以下、本発明の実施例1,実施例2,実施例3,実施例4,実施例5を説明する。
Hereinafter, Example 1, Example 2, Example 3, Example 4, and Example 5 of the present invention will be described.
本発明の実施例1の電気掃除機は、電動送風機28を備えた掃除機本体1と、掃除機本体1に着脱自在な集塵装置2とを備え、集塵装置2は、吸い込んだ空気を旋回させて空気から塵埃を分離する分離部(例えば、塵埃分離部4)と、分離部に連通し塵埃を収容する収容部(例えば、塵埃収容部5)とを備え、分離部と収容部とは、軸方向に配列され、収容部は、分離部と連通する側に開口し分離部と連通する側とは反対側に凹んだ形状を有するフィルタ(例えば、集塵かご12)を備え、分離部の旋回流の外側の空気は、収容部内のフィルタ内に流入し、分離部の旋回流の内側の空気は、収容部内でかつフィルタの外側に流入することを特徴とする。
The vacuum cleaner according to the first embodiment of the present invention includes a vacuum cleaner body 1 having an electric blower 28 and a dust collector 2 that is detachably attached to the vacuum cleaner body 1. A separation unit (for example, a dust separation unit 4) that swirls and separates dust from the air, and a storage unit (for example, a dust storage unit 5) that communicates with the separation unit and stores the dust, the separation unit and the storage unit, Are arranged in the axial direction, and the accommodating portion is provided with a filter (for example, a dust collecting basket 12) having a shape opened on the side communicating with the separating portion and recessed on the opposite side to the side communicating with the separating portion. The air outside the swirling flow of the part flows into the filter in the housing part, and the air inside the swirling flow of the separating part flows into the housing part and outside the filter.
そして、本発明の実施例1によれば、分離部と収容部とを軸方向に配列して連通し、そして、分離部の旋回流の外側の空気を収容部内の凹んだ形状を有するフィルタ内に流入し、分離部の旋回流の内側の空気を収容部内でかつ凹んだ形状を有するフィルタの外側に流入することにより、使用者の手を煩わせることなく塵埃を圧縮し、堆積した塵埃を使用者が容易に排出でき、さらに、吸引力の低下を抑制することができる。
And according to Example 1 of this invention, the separation part and the accommodating part are arranged in the axial direction and communicated with each other, and the air outside the swirling flow of the separation part is in a filter having a recessed shape in the accommodating part. The air inside the swirling flow of the separation part flows into the housing part and outside the filter having a concave shape, thereby compressing the dust without bothering the user and removing the accumulated dust. The user can easily discharge, and can further suppress a decrease in suction force.
または、本発明の実施例1の電気掃除機は、本体吸気口21と吸引力を発生する電動送風機28とを備えた掃除機本体1と、掃除機本体の本体吸気口21と電動送風機28との間に着脱自在な集塵装置2とを備え、集塵装置2は、略円筒形状を有し本体吸気口21に連通可能な第1の集塵部(例えば、塵埃分離部4)と、第1の集塵部の軸方向端部に連通しかつ電動送風機28に連通する第2の集塵部(例えば、塵埃収容部5)とを備え、第1の集塵部は、円周面に複数の貫通孔33を有する内筒7を略円筒形状内に内包し、第2の集塵部は、第1の集塵部と連通する側に開口し第1の集塵部と連通する側とは反対側に凹んだ形状を有する通気部材(例えば、集塵かご12)を内包し、第1の集塵部の内筒7の外側は、第2の集塵部内の凹んだ形状を有する通気部材の開口に連通し、第1の集塵部の内筒7の内側は、第2の集塵部内でかつ凹んだ形状を有する通気部材の外側に連通することを特徴とする。
Or the vacuum cleaner of Example 1 of this invention is the cleaner main body 1 provided with the main body inlet 21 and the electric blower 28 which generate | occur | produces suction power, the main body inlet 21 of the cleaner main body, and the electric blower 28. A dust collecting device 2 that is detachable between the first dust collecting unit 2 and the first dust collecting unit (for example, the dust separating unit 4) that has a substantially cylindrical shape and can communicate with the main body inlet 21; A second dust collecting part (for example, a dust storage part 5) communicating with the axial end of the first dust collecting part and communicating with the electric blower 28, the first dust collecting part being a circumferential surface The inner cylinder 7 having a plurality of through-holes 33 is enclosed in a substantially cylindrical shape, and the second dust collecting portion opens on the side communicating with the first dust collecting portion and communicates with the first dust collecting portion. A ventilation member (for example, a dust collecting basket 12) having a shape recessed on the opposite side to the side is included, and the outer side of the inner cylinder 7 of the first dust collecting portion is recessed in the second dust collecting portion. It communicates with the opening of the ventilation member having the shape, and the inside of the inner cylinder 7 of the first dust collection portion communicates with the outside of the ventilation member having the recessed shape in the second dust collection portion. .
そして、本発明の実施例1によれば、第2の集塵部を第1の集塵部の軸方向端部に連通し、そして、第1の集塵部の内筒7の外側を第2の集塵部内の凹んだ形状を有する通気部材の開口に連通し、第1の集塵部の内筒7の内側を第2の集塵部内でかつ凹んだ形状を有する通気部材の外側に連通することにより、使用者の手を煩わせることなく塵埃を圧縮し、堆積した塵埃を使用者が容易に排出でき、さらに、吸引力の低下を抑制することができる。
According to the first embodiment of the present invention, the second dust collecting portion is communicated with the axial end portion of the first dust collecting portion, and the outer side of the inner cylinder 7 of the first dust collecting portion is connected to the first dust collecting portion. The inside of the inner cylinder 7 of the first dust collecting portion is connected to the outside of the venting member having the recessed shape inside the second dust collecting portion. By communicating, dust can be compressed without bothering the user, the accumulated dust can be easily discharged by the user, and a decrease in suction force can be suppressed.
図1に、本発明の実施例の掃除機本体1の側面から見た断面図を示す。電気掃除機の使用状態では、掃除機本体1が横置きとなり、電気掃除機の収納状態では、掃除機本体1が縦置きとなるのが好ましい。電気掃除機の使用状態において、本体吸気口21側を前方(上流側)、本体排気口30側を後方(下流側)とすると、電気掃除機の収納状態では、本体吸気口21が重力作用方向上側となり本体排気口30が重力作用方向下側となる。掃除機本体1が横置きされた場合は、掃除機本体1の下面が、掃除機本体1が置かれた面(例えば、床面)に対して平行になり、重力作用方向に対して垂直となる。
In FIG. 1, sectional drawing seen from the side surface of the cleaner body 1 of the Example of this invention is shown. It is preferable that the vacuum cleaner main body 1 is horizontally placed in the usage state of the vacuum cleaner, and the vacuum cleaner main body 1 is vertically placed in the housed state of the vacuum cleaner. When the vacuum cleaner is in use, if the main body inlet 21 side is the front (upstream side) and the main body exhaust port 30 side is the rear (downstream side), the main body inlet 21 is in the direction of gravity in the housed state of the vacuum cleaner. The main body exhaust port 30 is on the lower side in the direction of gravity action. When the cleaner body 1 is placed horizontally, the lower surface of the cleaner body 1 is parallel to the surface (for example, the floor surface) on which the cleaner body 1 is placed and is perpendicular to the direction of gravity action. Become.
まず、掃除機本体1の構造を説明する。吸い込んだ空気から塵埃を捕集する集塵装置2は、掃除機本体1の前側に着脱自在に配置される。集塵装置2の長手方向(軸方向)を重力作用方向(縦型配置)とすると、掃除機本体1の高さが高くなる。一方、集塵装置2内の旋回流の軸方向(集塵装置2の軸方向)が重力作用方向に近いほど遠心分離作用による分離効果が大きくなり、集塵装置2内の旋回流の軸方向が重力作用方向に対して45度を超えると遠心分離作用による分離効果が極端に低下する。そこで、掃除機本体1の高さを小さくすると共に遠心分離作用による分離効果の低下を抑制するために、本実施例では、集塵装置2の軸方向は、重力作用方向に対して40度〜45度程度とする。ただし、遠心分離作用による分離効果を高くするには、集塵装置2の軸方向は、重力作用方向に対して40度よりも小さくてもよい(例えば、0度)。塵埃分離部(旋回部)4を下側に配置し、塵埃収容部5を上側に配置する代わりに、塵埃分離部4を上側に配置し、塵埃収容部5を下側に配置してもよい。この場合は、入口管3は、塵埃分離部4の軸方向の前側端部の円周面に接続されるのが好ましい。
First, the structure of the cleaner body 1 will be described. The dust collector 2 that collects dust from the sucked air is detachably disposed on the front side of the cleaner body 1. When the longitudinal direction (axial direction) of the dust collector 2 is the gravity action direction (vertical arrangement), the height of the cleaner body 1 is increased. On the other hand, the closer the axial direction of the swirling flow in the dust collector 2 (the axial direction of the dust collecting device 2) is to the gravity acting direction, the greater the separation effect due to the centrifugal separation action, and the axial direction of the swirling flow in the dust collecting device 2 When the angle exceeds 45 degrees with respect to the direction of gravity action, the separation effect due to the centrifugal action is extremely reduced. Therefore, in order to reduce the height of the vacuum cleaner main body 1 and suppress a decrease in the separation effect due to the centrifugal separation action, in this embodiment, the axial direction of the dust collector 2 is 40 degrees to the gravity action direction. It is about 45 degrees. However, in order to increase the separation effect by the centrifugal separation action, the axial direction of the dust collector 2 may be smaller than 40 degrees (for example, 0 degree) with respect to the gravity action direction. Instead of disposing the dust separation unit (swivel unit) 4 on the lower side and the dust storage unit 5 on the upper side, the dust separation unit 4 may be disposed on the upper side and the dust storage unit 5 on the lower side. . In this case, the inlet pipe 3 is preferably connected to the circumferential surface of the front end portion in the axial direction of the dust separator 4.
集塵装置2は、吸い込んだ空気を旋回させ、遠心分離作用(サイクロン方式)によって塵埃を分離する塵埃分離部4と、塵埃分離部4に連通し、塵埃分離部4で分離された塵埃を収容する塵埃収容部5を備える。塵埃分離部4と塵埃収容部5とは、集塵装置2の軸方向に配列され、それぞれの軸方向端部で接続され、連通する。つまり、塵埃分離部4は、掃除機本体1の前側に配置され、塵埃収容部5は、塵埃分離部4に対して掃除機本体1の前側に配置される。使用者が塵埃分離部4と塵埃収容部5とを容易に分離可能なように、塵埃分離部4と塵埃収容部5とが連結されている。掃除機本体1の前端に、管状の本体吸気口21を備える。塵埃分離部4の軸方向の前側端面の一部は、開口しており、その開口部が入口管3に接続される。塵埃分離部4の軸方向の前側端面ではなく、塵埃分離部4の軸方向の前側端部の円周面が、入口管3に接続されてもよい。入口管3は、掃除機本体1の幅方向の中央に形成されるのが好ましい。内筒7および凹み部8も、掃除機本体1の幅方向の中央に形成されるのが好ましい。
The dust collector 2 swirls the sucked air and communicates with the dust separator 4 that separates the dust by a centrifugal separation action (cyclone method), and the dust separator 4 accommodates the dust separated by the dust separator 4. A dust container 5 is provided. The dust separator 4 and the dust container 5 are arranged in the axial direction of the dust collector 2 and are connected and communicated with each other in the axial direction. That is, the dust separator 4 is disposed on the front side of the cleaner body 1, and the dust container 5 is disposed on the front side of the cleaner body 1 with respect to the dust separator 4. The dust separator 4 and the dust container 5 are connected so that the user can easily separate the dust separator 4 and the dust container 5. A tubular main body inlet 21 is provided at the front end of the cleaner body 1. A part of the front end face in the axial direction of the dust separator 4 is open, and the opening is connected to the inlet pipe 3. Instead of the front end surface in the axial direction of the dust separator 4, the circumferential surface of the front end in the axial direction of the dust separator 4 may be connected to the inlet pipe 3. The inlet pipe 3 is preferably formed at the center in the width direction of the cleaner body 1. The inner cylinder 7 and the recessed portion 8 are also preferably formed at the center in the width direction of the cleaner body 1.
塵埃分離部4は、中空の略円筒状の外筒6と、外筒6と同心軸で外筒6に内包される中空の略円筒状の内筒7を備える。旋回流の軸心が重力によって重力作用方向にずれることによって遠心分離作用による分離効果が低下するのを抑制するために、塵埃分離部4の軸方向が重力作用方向に対して傾いている場合には、内筒7の軸心を外筒6の軸心に対して下方向にずらしてもよい。図3(A)に示すように、外筒6の軸方向一端面(前側端面)は、入口管3に接続される開口を除き閉塞されおり、外筒6の軸方向他端面(後側端面)は、開口している。外筒6は、使用者から塵埃の堆積が見えるようにまたは外筒6外に設けたセンサが塵埃の堆積を検出できるように、透明または半透明のプラスチックや樹脂で構成されるのが好ましい。内筒7の軸方向一端面(前側端面)は閉塞されており、内筒7の軸方向他端面(後側端面)は、開口している。図3(A)に示すように、内筒7の軸方向一端面の閉塞部分の中央に、内筒7の軸方向内側へ凹んだ凹み部8が形成される。入口管3は、内筒7の軸方向一端面の閉塞部分、つまり凹み部8に対向している。図3(A)に示すように、凹み部8の一部は、内筒7の外周端まで達している。空気の圧力損失を低減するために、凹み部8の開口方向は、下方向であるのが好ましい。ただし、凹み部8の開口方向は、上方向でも横方向でもよい。図3(A)に示すように、凹み部8の内筒7の外周端部では、凹み部8が内筒7の半径方向に真っ直ぐに向くのではなく、やや円周方向に傾いている。図1に示すように、凹み部8の軸方向の深さは、内筒7の円筒部分の軸方向の長さの略半分程度である。ただし、凹み部8の軸方向の深さは、内筒7の円筒部分の軸方向のほぼ全長にわたってもよい。この場合は、内筒7の円筒部分のほぼ全長にわたって内筒7の円周面の一部に凹み部8の開口が形成されることになる。さらに、凹み部8の外周端部に、案内管38が接続される。案内管38の断面は略1/2円形状であり、内筒7の外周面に沿って形成され、内筒7の外周面も流路の内壁面の一部を形成する。案内管38は内筒7の外周面に、円周方向に数cm程度形成される。よって、入口管3によって軸方向に流入した空気は、凹み部8によって半径方向に向きを変え、さらに、凹み部8の内筒7の外周端部でやや円周方向に変えられ、さらに案内管38で円周方向に変えられる。また、凹み部8は凹凸がなく、曲面で形成されるのが好ましい。これによって、圧力損失を抑制しつつ空気を十分に旋回させることができる。案内管38は、なくても構わない。内筒7の軸方向他端面(後側端面)の外周に、外筒6へ向かって延びる外延部34が形成される。つまり、図3(A)に示すように、内筒7の軸方向他端面(後側端面)は、内筒7の内側が開口した円環状となっている。
The dust separation unit 4 includes a hollow substantially cylindrical outer cylinder 6 and a hollow substantially cylindrical inner cylinder 7 enclosed in the outer cylinder 6 with a concentric axis with the outer cylinder 6. When the axial direction of the dust separation part 4 is inclined with respect to the gravity action direction in order to prevent the separation effect due to the centrifugal separation action from deteriorating due to the axial center of the swirling flow being shifted in the gravity action direction by gravity. The axis of the inner cylinder 7 may be shifted downward with respect to the axis of the outer cylinder 6. As shown in FIG. 3A, one end surface (front end surface) in the axial direction of the outer cylinder 6 is closed except for an opening connected to the inlet pipe 3, and the other end surface in the axial direction (rear end surface) of the outer cylinder 6. ) Is open. The outer cylinder 6 is preferably made of transparent or translucent plastic or resin so that dust accumulation can be seen by the user or a sensor provided outside the outer cylinder 6 can detect the accumulation of dust. One end face (front end face) in the axial direction of the inner cylinder 7 is closed, and the other end face (rear end face) in the axial direction of the inner cylinder 7 is open. As shown in FIG. 3A, a recessed portion 8 that is recessed inward in the axial direction of the inner cylinder 7 is formed at the center of the closed portion of one end surface in the axial direction of the inner cylinder 7. The inlet pipe 3 is opposed to the closed portion of one end surface in the axial direction of the inner cylinder 7, that is, the recessed portion 8. As shown in FIG. 3A, a part of the recessed portion 8 reaches the outer peripheral end of the inner cylinder 7. In order to reduce the pressure loss of air, it is preferable that the opening direction of the recessed part 8 is a downward direction. However, the opening direction of the recessed part 8 may be upward or lateral. As shown in FIG. 3A, at the outer peripheral end of the inner cylinder 7 of the recess 8, the recess 8 does not face straight in the radial direction of the inner cylinder 7 but is slightly inclined in the circumferential direction. As shown in FIG. 1, the depth of the recess 8 in the axial direction is about half of the axial length of the cylindrical portion of the inner cylinder 7. However, the axial depth of the recessed portion 8 may extend over substantially the entire axial length of the cylindrical portion of the inner cylinder 7. In this case, the opening of the recessed portion 8 is formed in a part of the circumferential surface of the inner cylinder 7 over almost the entire length of the cylindrical portion of the inner cylinder 7. Further, a guide tube 38 is connected to the outer peripheral end of the recess 8. The cross section of the guide tube 38 has a substantially ½ circular shape, is formed along the outer peripheral surface of the inner cylinder 7, and the outer peripheral surface of the inner cylinder 7 also forms part of the inner wall surface of the flow path. The guide tube 38 is formed on the outer peripheral surface of the inner cylinder 7 in the circumferential direction by about several centimeters. Therefore, the air that has flowed in the axial direction by the inlet pipe 3 is changed in the radial direction by the recessed portion 8 and further changed in the circumferential direction by the outer peripheral end portion of the inner cylinder 7 of the recessed portion 8. At 38, it can be changed in the circumferential direction. Moreover, it is preferable that the recessed part 8 does not have an unevenness | corrugation and is formed in a curved surface. Thereby, air can be sufficiently swirled while suppressing pressure loss. The guide tube 38 may not be provided. An outer extension 34 extending toward the outer cylinder 6 is formed on the outer periphery of the other axial end surface (rear end face) of the inner cylinder 7. That is, as shown in FIG. 3A, the other axial end surface (rear side end surface) of the inner cylinder 7 has an annular shape with the inner side of the inner cylinder 7 opened.
図3(A)に示すように、外延部34の円周方向の一部は、開口している。この開口によって、内筒7外の空気が、塵埃収容部5に流入することができる。内筒7は、菌の繁殖を抑制できるように、抗菌作用のある金属(例えば、銀,銅)や抗菌物質(例えば、銀,銅)を含有するあるいは塗布された金属(例えば、ステンレス)で構成されるのが好ましい。ただし、内筒7は、円筒部分も含め樹脂で構成されてもよい。そして、図3(A)に示すように、外筒6の軸方向他端面から内筒7が軸方向へ挿入されることによって、外延部34の外周端が外筒6の内周に当接され、その結果、外筒6の軸方向他端面が閉塞される。使用者が外筒6と内筒7とを容易に分離可能なように、外筒6と内筒7とが連結される。内筒7の円周面に、複数の貫通孔33を備える。複数の貫通孔33によって、内筒7はフィルタ機能を有する。この貫通孔33によって、大きなごみが内筒7内へ流入することなく、内筒7外側から内筒7内側へ空気が流入することができる。吸込力にもよるが、1円玉以上の重さのごみは、外筒6内を吸い上げられることができず、外筒6内に残ることがある。使用者が外筒6と内筒7とを容易に分離可能なように、外筒6と内筒7とが連結することによって、使用者は、外筒6と内筒7とを容易に分離でき、外筒6内に堆積したごみを容易に排出でき、また、内筒7の貫通孔33にひっかかった髪の毛や糸くずを容易に除去することができる。
As shown in FIG. 3A, a part of the outer extending portion 34 in the circumferential direction is open. With this opening, air outside the inner cylinder 7 can flow into the dust container 5. The inner cylinder 7 is made of an antibacterial metal (for example, silver, copper) or an antibacterial substance (for example, silver, copper) or a coated metal (for example, stainless steel) so as to suppress the growth of bacteria. Preferably it is configured. However, the inner cylinder 7 may be comprised with resin also including a cylindrical part. Then, as shown in FIG. 3A, the outer cylinder 34 is inserted in the axial direction from the other axial end surface of the outer cylinder 6, so that the outer peripheral end of the outer extension 34 comes into contact with the inner periphery of the outer cylinder 6. As a result, the other axial end surface of the outer cylinder 6 is closed. The outer cylinder 6 and the inner cylinder 7 are connected so that the user can easily separate the outer cylinder 6 and the inner cylinder 7. A plurality of through holes 33 are provided on the circumferential surface of the inner cylinder 7. The inner cylinder 7 has a filter function by the plurality of through holes 33. The through-hole 33 allows air to flow from the outer side of the inner cylinder 7 to the inner side of the inner cylinder 7 without large dust flowing into the inner cylinder 7. Although it depends on the suction force, garbage having a weight of 1 yen or more cannot be sucked up in the outer cylinder 6 and may remain in the outer cylinder 6. By connecting the outer cylinder 6 and the inner cylinder 7 so that the user can easily separate the outer cylinder 6 and the inner cylinder 7, the user can easily separate the outer cylinder 6 and the inner cylinder 7 from each other. The dust accumulated in the outer cylinder 6 can be easily discharged, and the hair and lint caught in the through hole 33 of the inner cylinder 7 can be easily removed.
塵埃分離部4と塵埃収容部5との接続部の気密を保つために、内筒7の軸方向他端面に、パッキング9を備える。パッキング9は、外延部34に設けられるだけでなく、内筒7の軸方向にも突出している。よって、内筒7の内側は、完全な中空ではなく、パッキング9によって一部閉塞空間が存在する。さらに、パッキング9の内筒7の内側へ突出した部分に、内筒7の軸方向内側へ凹んだ凹み部39が形成される。凹み部39は把手の機能を有する。これにより、使用者が凹み部39に指を挿入して、塵埃分離部4あるいは内筒7を保持することができる。外延部34の上側の一部は、開口しており、前蓋11の外側流路35に連通する。つまり、外筒6の内側であって内筒7の円筒部分の外側が、前蓋11の外側流路35に連通する。図3(A)に示すように、外延部34の上側の一部の開口の円周方向の壁面は、円周方向に案内管38の開口に対向する側の壁面が高く、円周方向に案内管38の開口側の壁面が低いのが好ましい。例えば、塵埃分離部4を前方から見た場合に案内管38の開口方向が反時計回り方向だとすると、外延部34の上側の一部の開口の円周方向の壁面のうち左側の壁面が高く、右側の壁面が低い。つまり、外延部34の上側の一部が開口しているため、外延部34の円周方向は、内筒7の外周の一周分には満たないが、らせん状にずれている。よって、内筒7外の旋回流は、外延部34の上側の一部の開口の円周方向の高い壁面にぶつかって、スムーズに軸方向へ向きを変えることができ、旋回流に含まれる塵埃も塵埃収容部5へ流れやすくなる。一方、内筒7の内側は、前蓋11の内側流路36に連通する。
In order to keep the airtightness of the connecting portion between the dust separator 4 and the dust container 5, a packing 9 is provided on the other axial end surface of the inner cylinder 7. The packing 9 is not only provided on the outer extension 34, but also projects in the axial direction of the inner cylinder 7. Therefore, the inside of the inner cylinder 7 is not completely hollow, and a partially closed space exists due to the packing 9. Further, a recessed portion 39 that is recessed inward in the axial direction of the inner cylinder 7 is formed in a portion of the packing 9 that protrudes to the inner side of the inner cylinder 7. The recess 39 has a handle function. Thereby, the user can hold the dust separation part 4 or the inner cylinder 7 by inserting a finger into the recess 39. A part of the upper side of the extended portion 34 is open and communicates with the outer flow path 35 of the front lid 11. That is, the inside of the outer cylinder 6 and the outside of the cylindrical portion of the inner cylinder 7 communicates with the outer flow path 35 of the front lid 11. As shown in FIG. 3 (A), the circumferential wall surface of the opening on the upper side of the extended portion 34 has a high wall surface on the side facing the opening of the guide tube 38 in the circumferential direction. The wall surface on the opening side of the guide tube 38 is preferably low. For example, assuming that the opening direction of the guide tube 38 is the counterclockwise direction when the dust separation unit 4 is viewed from the front, the left wall surface is high among the circumferential wall surfaces of a part of the upper opening of the extension portion 34, The wall on the right side is low. That is, since a part of the upper side of the extended portion 34 is opened, the circumferential direction of the extended portion 34 is less than one round of the outer periphery of the inner cylinder 7 but is shifted in a spiral shape. Therefore, the swirling flow outside the inner cylinder 7 can collide with the wall surface in the circumferential direction of a part of the opening on the upper side of the extended portion 34 and can smoothly change the direction in the axial direction. Also easily flows to the dust container 5. On the other hand, the inner side of the inner cylinder 7 communicates with the inner flow path 36 of the front lid 11.
塵埃収容部5は、軸方向一端面(前側端面)と軸方向他端面(後側端面)とが開口し、横断面で略逆三角形状の中空のケース10を備える。ケース10の軸方向一端面は、開閉可能な前蓋11によって閉塞される。前蓋11の下端部に軸31を備え、軸31はケース10の下端部によって支持される。前蓋11は、軸31を支点としてケース10の軸方向に前後回動可能である。前蓋11の上端部のケース10側には、爪が突出している。一方、ケース10の前側上部に、使用者が押下することが可能なボタン17(レバーでもよい)を備え、ボタン17に、ケース10の前側に延びる伝達棒(ロッド)18が連結されている。伝達棒18の一端は、ボタン17に連結され、伝達棒18の他端は、爪状に形成されている。伝達棒18の他端の爪は、前蓋11の上端部の爪に係合可能である。ケース10に前蓋11が閉じられた状態では、伝達棒18の他端の爪と前蓋11の上端部の爪とが係合して、前蓋11が開くのを防止することができる。そして、使用者がボタン17を押下すると伝達棒18が前側へスライドして(上側に回動してもよい)、伝達棒18の他端の爪と前蓋11の上端部の爪との係合が解除され、重力によってケース10から前蓋11を開くことができる。把手16の形成方向が水平であるのに対して、ケース10の軸方向一端面(前蓋11部分に相当)の法線方向は、水平方向に対して45度〜50度傾斜している。つまり、使用者が把手16を握って塵埃収容部5を持ち上げた際には、ケース10の軸方向一端面(前蓋11部分に相当)は、下方向(重力作用方向)を向いている。よって、重力によってケース10から前蓋11が開くことができる。尚、後述するが、集塵かご(集塵容器)12が、バネ(弾性体)によってケース10の前側へ飛び出すように付勢されていれば、集塵かご12が前蓋11の後面を押すため、使用者がボタン17を押下すると、集塵かご12の押す力によってスムーズにケース10から前蓋11が開くこともできる。換言すると、集塵かご12の開口面が前蓋11の後面によって押さえ受けられることによって、集塵かご12がケース10内に収納され、その収納状態が維持される。
The dust container 5 is provided with a hollow case 10 having an axially one end face (front end face) and an axially other end face (rear end face) that are substantially inverted triangular in cross section. One end surface in the axial direction of the case 10 is closed by a front lid 11 that can be opened and closed. A shaft 31 is provided at the lower end of the front lid 11, and the shaft 31 is supported by the lower end of the case 10. The front lid 11 can be rotated back and forth in the axial direction of the case 10 with the shaft 31 as a fulcrum. A claw projects from the upper end portion of the front lid 11 on the case 10 side. On the other hand, a button 17 (which may be a lever) that can be pressed by the user is provided on the upper front side of the case 10, and a transmission rod (rod) 18 extending to the front side of the case 10 is connected to the button 17. One end of the transmission rod 18 is connected to the button 17, and the other end of the transmission rod 18 is formed in a claw shape. The claw at the other end of the transmission rod 18 can be engaged with the claw at the upper end of the front lid 11. When the front lid 11 is closed to the case 10, it is possible to prevent the front lid 11 from being opened by engaging the claw at the other end of the transmission rod 18 and the claw at the upper end of the front lid 11. When the user presses the button 17, the transmission rod 18 slides forward (may rotate upward), and the engagement between the other end of the transmission rod 18 and the upper end of the front lid 11 is engaged. The combination is released and the front lid 11 can be opened from the case 10 by gravity. While the handle 16 is formed in a horizontal direction, the normal direction of one end surface in the axial direction of the case 10 (corresponding to the front lid 11 portion) is inclined by 45 to 50 degrees with respect to the horizontal direction. That is, when the user holds the handle 16 and lifts the dust container 5, one end surface in the axial direction of the case 10 (corresponding to the front lid 11 portion) faces downward (the direction of gravity action). Therefore, the front lid 11 can be opened from the case 10 by gravity. As will be described later, if the dust collection basket (dust collection container) 12 is urged by a spring (elastic body) to jump out to the front side of the case 10, the dust collection basket 12 pushes the rear surface of the front lid 11. Therefore, when the user presses the button 17, the front lid 11 can be smoothly opened from the case 10 by the pressing force of the dust collecting basket 12. In other words, the dust collection basket 12 is stored in the case 10 by the opening surface of the dust collection basket 12 being held by the rear surface of the front lid 11, and the stored state is maintained.
ケース10の軸方向他端面は、開閉可能なフィルタ15によって閉塞される。フィルタ15の下端部に軸32を備え、軸32はケース10の下端部によって支持される。フィルタ15は、軸32を支点としてケース10の軸方向に前後回動可能である。フィルタ15は、断面形状が略四角形の枠体内にプリーツ状に折られたフィルタ部材79が形成される。図4(B)に示すように、フィルタ部材79の波方向は縦方向(重力作用方向)であるのが好ましい。フィルタ15は、例えば、高密度のHEPAフィルタ(High Efficiency Particulate Air Filter)である。HEPAフィルタとは、定格風量で粒径が0.3μmの粒子に対して99.97%以上の粒子捕集率をもち、かつ初期圧力損失が245Pa以下の性能を持つエアフィルタである。フィルタ15のケース10の反対側の面に、パッキング25を備えていてもよい。パッキング25によって、塵埃収容部5の軸方向他端面と掃除機本体1(特に吸気ダクト27入口)との気密を保持できる。尚、軸31と軸32は、共用されてもよい。また、軸32は、フィルタ15の下端部ではなく、フィルタ15の上端部に備えられてもよい。
The other axial end surface of the case 10 is closed by a filter 15 that can be opened and closed. A shaft 32 is provided at the lower end of the filter 15, and the shaft 32 is supported by the lower end of the case 10. The filter 15 can be rotated back and forth in the axial direction of the case 10 with the shaft 32 as a fulcrum. The filter 15 is formed with a filter member 79 folded in a pleat shape in a frame body having a substantially square cross-sectional shape. As shown in FIG. 4B, the wave direction of the filter member 79 is preferably the vertical direction (gravity acting direction). The filter 15 is, for example, a high-density HEPA filter (High Efficiency Particulate Air Filter). A HEPA filter is an air filter having a particle collection rate of 99.97% or more with respect to particles having a rated air volume of 0.3 μm and an initial pressure loss of 245 Pa or less. A packing 25 may be provided on the surface of the filter 15 opposite to the case 10. By the packing 25, the airtightness between the other axial end surface of the dust container 5 and the cleaner body 1 (particularly, the inlet of the intake duct 27) can be maintained. The shaft 31 and the shaft 32 may be shared. Further, the shaft 32 may be provided not at the lower end portion of the filter 15 but at the upper end portion of the filter 15.
ケース10に、集塵かご12を内包する。集塵かご12の形状は、一つの面が開口したかご形状,立体的形状,箱形状または容器形状であってもよいし、ちりとり形状であってもよい。つまり、集塵かご12は、開口と反対側に凹んだ形状を有する。集塵かご12の断面形状は、略四角形状であってもよいし、略円形状であってもよいし、略三角形状であってもよい。集塵かご12の断面形状は、開口面から底面へ向かって、小さくなるのが好ましい。これによって、塵埃が排出される側(開口側)に向かって断面積が拡がるため、使用者は、集塵かご12内に堆積した塵埃を容易に排出することができる。集塵かご12の形状は、枠体(支骨)によって形成される。集塵かご12の開口面以外の底面、上下左右面に、金属やナイロンなどで構成されたメッシュ部材が被覆または貼着されているのが好ましい。集塵かご12の底面だけでなく、上下左右面にも通気性を持たせることによって、集塵かご12の底面に塵埃が堆積しても流路を確保することができ、吸い込み空気の圧力損失を低減し、吸引力の低下を抑制することができる。このメッシュ部材は、通気性があり、塵埃を捕集するフィルタ機能を有する。通気性があり、塵埃を捕集するフィルタ機能を有するものであれば、メッシュ部材の代わりに使い捨てのティッシュペーパでもよいし、メッシュ部材とティッシュペーパとを組み合わせてもよい。例えば、メッシュ部材の上に使用者がティッシュペーパを装着してもよい。集塵かご12の開口面は、ケース10の軸方向一端面(前側端面)の開口面に一致する。つまり、集塵かご12の開口方向と、ケース10の軸方向一端面の開口方向とが同一である。そして、図6に示すように、集塵かご12の開口面の外周端の上側半分程度は、ケース10の軸方向一端面の内周面に当接し、集塵かご12の開口面の外周端の下側半分程度は、ケース10の軸方向一端面の内周面に当接していない。集塵かご12の下部に軸14を備える。軸14は、ケース10内に支持される。よって、集塵かご12は下部の軸14を支点として、ケース10の軸方向前後に回動可能である。これによって、塵埃収容部5から前蓋11が開かれた際に、重力によって塵埃収容部5から集塵かご12の一部が飛び出すことができる。ケース10に対する軸14の形成位置は、ケース10に対する軸31の形成位置と同じ側(下側)であるため、塵埃収容部5から前蓋11が開かれた際に、前蓋11によって阻害されることなく、塵埃収容部5から集塵かご12の一部が飛び出すことができる。さらに、軸14に、集塵かご12を前蓋11側に押し出す方向に弾性力が作用するつるまきバネを備えてもよい。これによって、塵埃収容部5から前蓋11が開かれた際に、バネの弾性力によって塵埃収容部5から集塵かご12の一部が勢いよく飛び出すことができ、使用者は、集塵かご12内に堆積した塵埃を容易に排出することができる。さらに、集塵かご12は、上下に2分割されており、つまり上半分の枠体(支骨)と下半分の枠体(支骨)という2つの構造物からなるのが好ましい。2分割された集塵かご12は、集塵かご12の底面の外側に形成された軸13によって連結される。よって、図4(A)に示すように、集塵かご12は、底面の中間を支点として、集塵かご12の開口面が上下に割れる。特に、集塵かご12の一部が塵埃収容部5から飛び出した際に、集塵かご12が上下に割れる。これによって、使用者は、集塵かご12内に堆積した塵埃をさらに容易に排出することができる。特に、集塵かご12の内面にへばりついた塵埃も容易にはがし落とすことができる。ただし、集塵かご12の上下2分割の構成は、必須ではない。また、上述したように、ケース10の前側は重力作用方向に対し40度〜45度傾いていることに加え、集塵かご12は塵埃収容部5から30度傾いて飛び出すため、集塵かご12内に堆積した塵埃を略重力方向に排出することができる。
A dust collecting basket 12 is enclosed in the case 10. The shape of the dust collecting basket 12 may be a cage shape with one surface opened, a three-dimensional shape, a box shape, a container shape, or a dustpan shape. That is, the dust collecting basket 12 has a shape recessed on the opposite side to the opening. The cross-sectional shape of the dust collecting basket 12 may be a substantially square shape, a substantially circular shape, or a substantially triangular shape. The cross-sectional shape of the dust collecting basket 12 is preferably smaller from the opening surface toward the bottom surface. As a result, the cross-sectional area increases toward the side (opening side) where the dust is discharged, so that the user can easily discharge the dust accumulated in the dust collecting basket 12. The shape of the dust collecting basket 12 is formed by a frame body (support frame). It is preferable that a mesh member made of metal, nylon, or the like is coated or adhered to the bottom surface of the dust collecting basket 12 other than the opening surface, the top, bottom, left and right surfaces. By providing not only the bottom surface of the dust collecting basket 12 but also the top, bottom, left, and right surfaces, air flow can be secured even if dust accumulates on the bottom surface of the dust collecting basket 12, and the pressure loss of the suction air Can be reduced, and a decrease in suction force can be suppressed. This mesh member is air permeable and has a filter function of collecting dust. A disposable tissue paper may be used instead of the mesh member, or a mesh member and a tissue paper may be combined as long as they are breathable and have a filter function for collecting dust. For example, the user may wear tissue paper on the mesh member. The opening surface of the dust collecting basket 12 coincides with the opening surface of one end surface (front end surface) in the axial direction of the case 10. That is, the opening direction of the dust collecting basket 12 and the opening direction of the one end surface in the axial direction of the case 10 are the same. As shown in FIG. 6, the upper half of the outer peripheral end of the opening surface of the dust collecting basket 12 abuts on the inner peripheral surface of one end surface in the axial direction of the case 10, and the outer peripheral end of the opening surface of the dust collecting basket 12. The lower half is not in contact with the inner peripheral surface of one end surface of the case 10 in the axial direction. A shaft 14 is provided at the bottom of the dust collecting basket 12. The shaft 14 is supported in the case 10. Therefore, the dust collecting basket 12 can be rotated back and forth in the axial direction of the case 10 with the lower shaft 14 as a fulcrum. Thereby, when the front lid 11 is opened from the dust container 5, a part of the dust collecting basket 12 can be ejected from the dust container 5 by gravity. Since the formation position of the shaft 14 with respect to the case 10 is on the same side (lower side) as the formation position of the shaft 31 with respect to the case 10, the front cover 11 is obstructed when the front cover 11 is opened from the dust container 5. A part of the dust collecting basket 12 can be ejected from the dust container 5 without any trouble. Further, the shaft 14 may be provided with a helical spring in which an elastic force acts in a direction in which the dust collecting basket 12 is pushed out to the front lid 11 side. As a result, when the front lid 11 is opened from the dust container 5, a part of the dust collection basket 12 can jump out of the dust container 5 vigorously by the elastic force of the spring. The dust accumulated in 12 can be easily discharged. Further, the dust collecting basket 12 is divided into two parts in the vertical direction, that is, it is preferably composed of two structures, that is, an upper half frame (support) and a lower half frame (support). The two divided dust collecting baskets 12 are connected by a shaft 13 formed outside the bottom surface of the dust collecting basket 12. Therefore, as shown in FIG. 4 (A), the dust collecting basket 12 has the opening surface of the dust collecting basket 12 split vertically, with the middle of the bottom as a fulcrum. In particular, when a part of the dust collection basket 12 jumps out of the dust container 5, the dust collection basket 12 breaks up and down. As a result, the user can more easily discharge the dust accumulated in the dust collecting basket 12. In particular, dust stuck to the inner surface of the dust collecting basket 12 can be easily removed. However, the upper and lower divided configuration of the dust collecting basket 12 is not essential. Further, as described above, in addition to the front side of the case 10 being inclined by 40 to 45 degrees with respect to the direction of gravity action, the dust collection basket 12 jumps out of the dust container 5 by 30 degrees, so that the dust collection basket 12 Dust accumulated inside can be discharged in the direction of gravity.
前蓋11内には、軸方向に貫通する外側流路35および内側流路36が形成される。そして、外側流路35は、前蓋11の上側に形成され、外側流路35の一端は塵埃分離部4の特に外筒6と内筒7の筒部の間にあたる外延部34の開口に連通し、外側流路35の他端はケース10の特に集塵かご12の開口に連通する。電気掃除機の停止時に、集塵かご12に堆積した塵埃が外側流路35および塵埃分離部4に逆流するのを防止するために、外側流路35の他端は集塵かご12の開口のうち半分よりも上側あるいは上端近傍に連通するのが好ましい。ただし、外側流路35の他端は、集塵かご12の開口の中央部に連通してもよい。さらに、電気掃除機の停止時に、集塵かご12に堆積した塵埃が外側流路35および塵埃分離部4に逆流するのを防止するために、外側流路35の内部または他端部に、外側流路35を覆う逆止弁(図示せず)を形成するのが好ましい。逆止弁は、上端を支点として、集塵かご12へ回動する。ただし、逆止弁は必須の構成ではない。外側流路35の断面積は、外側流路35の一端から他端へ向けて拡大している。外側流路35の形成方向は、外側流路35の一端から他端へ向けて前蓋11の外側から中心側へ向かう方向である。つまり、集塵かご12の外側から中心側へ向かう方向である。外側流路35から集塵かご12へ流入する空気の乱れを抑制するため、外側流路35の形成方向は、集塵かご12の外側流路35が連通する側の壁面(上側壁面)の方向であるのが好ましい。内側流路36は、前蓋11の中央から下側にかけて形成され、内側流路36の一端は塵埃分離部4の特に内筒7の軸方向他端開口(内筒7内)に連通し、内側流路36の他端はケース10の特に集塵かご12の外側に連通する。内側流路36の他端は、集塵かご12の外部下側に連通するのが好ましい。内側流路36は、外側流路35を避けて形成される。内側流路36の断面積は、外側流路35とは逆に、内側流路36の一端から他端へ向けて縮小している。
An outer channel 35 and an inner channel 36 penetrating in the axial direction are formed in the front lid 11. The outer flow path 35 is formed on the upper side of the front lid 11, and one end of the outer flow path 35 communicates with the opening of the extended part 34, particularly between the outer cylinder 6 and the inner cylinder 7 of the dust separation part 4. The other end of the outer flow path 35 communicates with the opening of the dust collecting basket 12 in the case 10. In order to prevent the dust accumulated in the dust collecting basket 12 from flowing back to the outer flow path 35 and the dust separation part 4 when the vacuum cleaner is stopped, the other end of the outer flow path 35 is the opening of the dust collecting basket 12. Of these, it is preferable to communicate with the upper half or near the upper end. However, the other end of the outer flow path 35 may communicate with the central portion of the opening of the dust collecting basket 12. Furthermore, in order to prevent the dust accumulated in the dust collecting basket 12 from flowing back to the outer flow path 35 and the dust separator 4 when the vacuum cleaner is stopped, A check valve (not shown) that covers the flow path 35 is preferably formed. The check valve rotates to the dust collecting basket 12 with the upper end as a fulcrum. However, the check valve is not an essential configuration. The cross-sectional area of the outer flow path 35 increases from one end of the outer flow path 35 toward the other end. The formation direction of the outer flow path 35 is a direction from the outer side of the front lid 11 toward the center side from one end of the outer flow path 35 to the other end. That is, the direction is from the outside of the dust collecting basket 12 toward the center side. In order to suppress the turbulence of the air flowing into the dust collecting basket 12 from the outer flow path 35, the outer flow path 35 is formed in the direction of the wall surface (upper wall surface) on the side where the outer flow path 35 of the dust collecting basket 12 communicates. Is preferred. The inner flow path 36 is formed from the center of the front lid 11 to the lower side, and one end of the inner flow path 36 communicates with the other end opening in the axial direction of the inner cylinder 7 (inside the inner cylinder 7) of the dust separator 4; The other end of the inner flow path 36 communicates with the case 10, particularly with the outside of the dust collecting basket 12. The other end of the inner flow path 36 is preferably in communication with the lower outside of the dust collecting basket 12. The inner flow path 36 is formed avoiding the outer flow path 35. Contrary to the outer flow path 35, the cross-sectional area of the inner flow path 36 is reduced from one end of the inner flow path 36 toward the other end.
塵埃収容部5の上部外側には、水平方向に延びる使用者が握ることが可能な把手16を備える。使用者は、この把手16を持って、塵埃収容部5を上方へ持ち上げ、塵埃分離部4を掃除機本体1に残したまま、塵埃収容部5のみを掃除機本体1から取り外すことができる。尚、塵埃分離部4と塵埃収容部5とを連結していれば、使用者は、この把手16を持って、塵埃収容部5を上方へ持ち上げれば、塵埃分離部4と塵埃収容部5とを一体として、つまり集塵装置2そのものを掃除機本体1から取り外すこともできる。図1に示すように、塵埃収容部5の軸方向他端面(フィルタ15部分に相当)の形成方向は、垂直面(重力作用方向)よりはケース10側に傾斜するのが好ましい。つまり、塵埃収容部5の軸方向他端面の上部よりも下部がケース10側に近いのが好ましい。また、図1に示すように、塵埃収容部5の軸方向一端面(前蓋11部分に相当)の形成方向は、垂直面(重力作用方向)よりはケース10側に40度〜45度程度傾斜している。つまり、塵埃収容部5の軸方向一端面の上部よりも下部がケース10側に近い。これによって、塵埃収容部5の軸方向一端面と軸方向他端面とは、垂直面(重力作用方向)を基準として、逆ハの字形状となる。これによって、使用者が塵埃収容部5を上方へ持ち上げる際に引っかかりが少なくなり、使用者は、塵埃収容部5を掃除機本体1から容易に取り外すことができる。そして、使用者は、塵埃収容部5の取り外し後に、凹み部39を持って、塵埃分離部4を上方または斜め上方へ持ち上げ、塵埃分離部4を掃除機本体1から容易に取り外すことができる。図1に示すように、塵埃分離部4の軸方向一端面(入口管3部分に相当)の形成方向は、垂直面(重力作用方向)よりは外筒6側に傾斜するのが好ましい。つまり、塵埃分離部4の軸方向他端面の上部よりも下部が外筒6側に近いのが好ましい。これによって、使用者が塵埃分離部4を上方または斜め上方へ持ち上げる際に引っかかりが少なくなり、使用者は、塵埃分離部4を掃除機本体1から容易に取り外すことができる。また、使用者が塵埃分離部4を取り外す場合だけでなく、塵埃分離部4と塵埃収容部5とを一体として、つまり集塵装置2そのものを掃除機本体1から取り外す際も、集塵装置2の軸方向一端面と軸方向他端面とは、垂直面(重力作用方向)を基準として、逆ハの字形状となるため、集塵装置2を上方へ持ち上げる際に引っかかりが少なくなり、使用者は、集塵装置2を掃除機本体1から容易に取り外すことができる。
A handle 16 that can be gripped by a user extending in the horizontal direction is provided on the outside of the upper portion of the dust container 5. The user can hold the handle 16, lift the dust container 5 upward, and remove only the dust container 5 from the cleaner body 1 while leaving the dust separator 4 in the cleaner body 1. In addition, if the dust separation part 4 and the dust storage part 5 are connected, if the user holds the handle 16 and lifts the dust storage part 5 upward, the dust separation part 4 and the dust storage part 5 will be described. And, that is, the dust collector 2 itself can be removed from the cleaner body 1. As shown in FIG. 1, the axial direction other end surface (corresponding to the filter 15 portion) of the dust container 5 is preferably inclined toward the case 10 than the vertical surface (gravity acting direction). That is, it is preferable that the lower part is closer to the case 10 side than the upper part of the other axial end surface of the dust container 5. Moreover, as shown in FIG. 1, the formation direction of the axial direction one end surface (equivalent to front cover 11 part) of the dust accommodating part 5 is about 40 to 45 degrees on the case 10 side from the vertical surface (gravity acting direction). It is inclined. That is, the lower part is closer to the case 10 side than the upper part of the one axial end surface of the dust container 5. As a result, the one end surface in the axial direction and the other end surface in the axial direction of the dust container 5 have an inverted C shape with respect to the vertical surface (gravity acting direction). Thereby, when a user lifts the dust accommodating part 5 upward, it becomes less caught, and the user can easily remove the dust accommodating part 5 from the cleaner body 1. Then, the user can easily remove the dust separator 4 from the cleaner body 1 by holding the recess 39 and lifting the dust separator 4 upward or obliquely upward after removing the dust container 5. As shown in FIG. 1, it is preferable that the axial direction one end surface (corresponding to the inlet pipe 3 portion) of the dust separating portion 4 is inclined toward the outer cylinder 6 rather than the vertical surface (gravity acting direction). That is, it is preferable that the lower part is closer to the outer cylinder 6 side than the upper part of the other axial end surface of the dust separator 4. As a result, when the user lifts the dust separator 4 upward or obliquely upward, there is less catching, and the user can easily remove the dust separator 4 from the cleaner body 1. Further, not only when the user removes the dust separator 4, but also when the dust separator 4 and the dust container 5 are integrated, that is, when the dust collector 2 itself is removed from the cleaner body 1. Since the one end surface in the axial direction and the other end surface in the axial direction have an inverted C shape with respect to the vertical surface (the direction of gravity action), the user is less likely to be caught when lifting the dust collector 2 upward. Can easily remove the dust collector 2 from the cleaner body 1.
本体吸気口21には、ホース継手管20が挿入され、ホース継手管20を保持可能である。本体吸気口21の一端に、パッキング22を備える。これによって、ホース継手管20と入口管3との気密を保持できる。掃除機本体1の前方下端(集塵装置2の下側)に、キャスタを支持するためのキャスタ支持部23を備える。掃除機本体1内の後方上側に、掃除機本体1の前後方向に延びる吸気ダクト27を備える。吸気ダクト27の延設方向一端の開口は、フィルタ15に対向する。吸気ダクト27の一端の開口付近に、補助フィルタ26を備える。これによって、集塵装置2外に残った塵埃を電動送風機28が吸い込むのを抑制することができる。吸気ダクト27の延設方向他端は閉塞されており、吸気ダクト27の延設方向他端近傍の下部、つまり、電動送風機28側が開口している。掃除機本体1の吸気ダクト27の一端の開口の上部に、フィルタ15に接触する位置に、フィルタ15に付着した塵埃を除去する除塵装置24を備える。除塵装置24は回転体の外周にらせん状のバネ(弾性体)を備える。除塵装置24はモータによってまたはコードリールの引き出しによって回転し、らせん状のバネがフィルタ15のフィルタ部材79を弾くことによって、フィルタ15に付着した塵埃を振るい落とす。上述したように、フィルタ15の波方向は縦方向のため、振るい落とされた塵埃は重力作用方向に落ちやすくなっている。フィルタ15から振るい落とされた塵埃は、ケース10内に堆積することとなる。これによって、フィルタ15の目詰まりを抑制し、空気の圧力損失の低下を抑制し、吸引力の低下を抑制することができる。掃除機本体1内の後方下側に、吸引力を発生する電動送風機28を備える。電動送風機28は、電動送風機28の吸込口が上方を向く縦置きで設置される。電動送風機28の下流側かつ電動送風機28よりも前側に、電動送風機28の排気口に連通する排気ダクト40を備える。さらに、排気ダクト40の下流側かつ排気ダクト40よりも前側に、排気ダクト40に連通するフィルタ29を備える。フィルタ29は、断面形状が略四角形の枠体78内にプリーツ状に折られたフィルタ部材79が形成される。フィルタ部材79の波方向は縦方向(重力作用方向)であるのが好ましい。フィルタ15は、例えば、高密度のULPAフィルタ(Ultra Low Penetration Air Filter)である。ULPAフィルタは、定格風量で粒径が0.15μmの粒子に対して99.9995%以上の粒子捕集率をもち、かつ初期圧力損失が245Pa以下の性能を持つエアフィルタであり、HEPAフィルタの粒子捕集効率よりも高い粒子捕集効率を有する。そして、掃除機本体1の後端面に、本体排気口30を備える。
A hose joint pipe 20 is inserted into the main body inlet 21 and can hold the hose joint pipe 20. A packing 22 is provided at one end of the main body inlet 21. Thereby, the airtightness of the hose joint pipe 20 and the inlet pipe 3 can be maintained. A caster support portion 23 for supporting casters is provided at the front lower end of the vacuum cleaner body 1 (below the dust collector 2). An intake duct 27 extending in the front-rear direction of the cleaner body 1 is provided on the upper rear side in the cleaner body 1. An opening at one end in the extending direction of the intake duct 27 faces the filter 15. An auxiliary filter 26 is provided near the opening at one end of the intake duct 27. Thereby, it is possible to suppress the electric blower 28 from sucking the dust remaining outside the dust collector 2. The other end in the extending direction of the intake duct 27 is closed, and the lower portion near the other end in the extending direction of the intake duct 27, that is, the electric blower 28 side is opened. A dust removing device 24 that removes dust adhering to the filter 15 is provided at a position in contact with the filter 15 at an upper portion of one end of the intake duct 27 of the cleaner body 1. The dust removing device 24 includes a spiral spring (elastic body) on the outer periphery of the rotating body. The dust removing device 24 is rotated by a motor or by pulling out a cord reel, and a spiral spring bounces the filter member 79 of the filter 15 to shake off dust attached to the filter 15. As described above, since the wave direction of the filter 15 is the vertical direction, the dust that has been shaken off easily falls in the direction of gravity. The dust shaken off from the filter 15 accumulates in the case 10. Accordingly, clogging of the filter 15 can be suppressed, a decrease in air pressure loss can be suppressed, and a decrease in suction force can be suppressed. An electric blower 28 that generates a suction force is provided on the lower rear side in the cleaner body 1. The electric blower 28 is installed vertically so that the suction port of the electric blower 28 faces upward. An exhaust duct 40 communicating with the exhaust port of the electric blower 28 is provided on the downstream side of the electric blower 28 and on the front side of the electric blower 28. Further, a filter 29 communicating with the exhaust duct 40 is provided on the downstream side of the exhaust duct 40 and on the front side of the exhaust duct 40. The filter 29 is formed with a filter member 79 folded in a pleat shape in a frame body 78 having a substantially square cross section. The wave direction of the filter member 79 is preferably the vertical direction (gravity acting direction). The filter 15 is, for example, a high-density ULPA filter (Ultra Low Penetration Air Filter). The ULPA filter is an air filter having a particle collection rate of 99.9995% or more for particles having a rated air volume of 0.15 μm and an initial pressure loss of 245 Pa or less. The particle collection efficiency is higher than the particle collection efficiency. And the main body exhaust port 30 is provided in the rear-end surface of the cleaner body 1. FIG.
次に、電気掃除機の動作時(使用時)の空気の流れを説明する。図1中の矢印は、空気の流れを示す。使用者が電気掃除機の電源をONにすると、電動送風機28が作動し、吸引力を発生する。ホース継手管20から吸い込まれた空気は、入口管3を通って、外筒6内に流入し、凹み部8にぶつかって半径方向に向きを変え、さらに、凹み部8の内筒7の外周端部でやや円周方向に向きを変え、さらに案内管38で円周方向に向きを変える。この結果、空気は、外筒6の軸心を中心として外筒6を旋回する。つまり、旋回流となる。空気の旋回に伴う遠心分離作用によって、空気に含まれる重い塵埃は旋回流の外側に集まる。空気に含まれる軽い塵埃は旋回流の外側だけでなく、内側にも残る。ただし、一般家庭での掃除において、塵埃の大部分は旋回流の外側に集まり、旋回流の内側にはあまり塵埃が残らない。内筒7外の空気は重い塵埃と共に、外側流路35を通って、集塵かご12へ流入する。塵埃は集塵かご12によって捕集され、堆積し、さらに吸引力によって圧縮される。塵埃は吸引力によって自動的に圧縮されるため、使用者の手を煩わすことなく、多くの塵埃を保持できる。空気は集塵かご12の底面および上下左右面を通過して、フィルタ15に到達する。一方、旋回流の内側空気は、内筒7の貫通孔33から内筒7内に流入する。貫通孔33よりも大きな塵埃は、貫通孔33を通過することができず、内筒7外に残る。内筒7内の空気は軽い塵埃および小さい塵埃と共に、内側流路36を通って、ケース10内で集塵かご12の外部下側へ流入し、フィルタ15に到達する。集塵かご12内を通過した空気と集塵かご12内を通過しなかった空気は、フィルタ15の手前で合流して、フィルタ15を通過する。よって、集塵かご12は、ケース10内を、外側流路35に連通する空間と内側流路36に連通する空間とに区画している(仕切っている)。あるいは、集塵かご12は、ケース10内を、外側流路35に連通する空間とフィルタ15に面している空間とに区画している(仕切っている)。フィルタ15では、軽い塵埃および小さい塵埃その他空気に含まれる塵埃が捕集される。フィルタ15を通過して塵埃をほとんど含まない空気は、補助フィルタを通過して吸気ダクト27に流入し、吸気ダクト27の下部の開口を通り電動送風機28の上部の吸込口から吸い込まれる。電動送風機28の側部の排出口から排出された空気は、排気ダクト40を通って、フィルタ29に到達し、フィルタ29によって残った塵埃が捕集される。フィルタ29を通過した空気は、電動送風機28の周りやコードリール室(図示せず)、掃除機本体1の下部のすき間などを通って、本体排気口30から掃除機本体1外部へ排出される。特に、フィルタ29は、空気清浄機に搭載されるフィルタと同程度またはそれ以上の集塵効率を有するため、掃除機本体1から外部へ排出される空気は、空気清浄機と同程度またはそれ以上に清浄化されている。 図2(A)に、本発明の実施例の集塵装置2の斜視図を示し、図2(B)に、本発明の実施例の集塵装置2の側面から見た断面図を示す。使用者は、把手16を握って集塵装置2を上方へ持ち上げることによって、掃除機本体1から集塵装置2を取り外すことができる。ただし、塵埃分離部4を掃除機本体1に残して、塵埃収容部5のみを掃除機本体1から取り外すようにしてもよい。図2(A)に示すように、軸方向から見た塵埃分離部4の断面の外形状は、略円形状である。塵埃収容部5の断面の外形状は、前蓋11の部分では略円形状であるが、前蓋11の部分以降では略四角形状であり、フィルタ15の部分でも略四角形状である。図2(B)に示すように、ケース10の軸方向一端の開口方向とケース10の軸方向他端の開口方向とは一直線上になく、45度〜50度程度異なる。つまり、塵埃収容部5の軸方向は、中間よりも少し前側で、曲がっている。上述したが、集塵装置2の軸方向一端面(入口管3の部分)は、わずかに下方向(重力作用方向)を向き、集塵装置2の軸方向他端面(フィルタ15の部分)も、わずかに下方向(重力作用方向)を向いており、集塵装置2の軸方向一端面と軸方向他端面とは、垂直面(重力作用方向)を基準として、逆ハの字形状となるため、集塵装置2を上方へ持ち上げる際に引っかかりが少なくなり、使用者は、集塵装置2を掃除機本体1から容易に取り外すことができる。
Next, the flow of air during operation (when in use) of the vacuum cleaner will be described. The arrows in FIG. 1 indicate the flow of air. When the user turns on the power of the vacuum cleaner, the electric blower 28 operates and generates a suction force. The air sucked from the hose joint pipe 20 flows into the outer cylinder 6 through the inlet pipe 3, hits the dent portion 8, changes its direction in the radial direction, and further, the outer periphery of the inner cylinder 7 of the dent portion 8. The direction is slightly changed in the circumferential direction at the end, and the direction is further changed in the circumferential direction by the guide tube 38. As a result, air turns around the outer cylinder 6 about the axis of the outer cylinder 6. That is, it becomes a swirl flow. The heavy dust contained in the air collects outside the swirling flow by the centrifugal separation action accompanying the swirling of the air. Light dust contained in the air remains not only outside the swirl but also inside. However, in general household cleaning, most of the dust collects outside the swirling flow, and much dust does not remain inside the swirling flow. The air outside the inner cylinder 7 flows into the dust collecting basket 12 through the outer flow path 35 together with heavy dust. The dust is collected by the dust collecting basket 12, accumulated, and further compressed by the suction force. Since the dust is automatically compressed by the suction force, a lot of dust can be held without bothering the user. The air passes through the bottom surface and the top, bottom, left and right surfaces of the dust collecting basket 12 and reaches the filter 15. On the other hand, the swirling inner air flows into the inner cylinder 7 from the through hole 33 of the inner cylinder 7. Dust larger than the through hole 33 cannot pass through the through hole 33 and remains outside the inner cylinder 7. The air in the inner cylinder 7 together with light dust and small dust flows through the inner flow path 36 and flows into the lower outside of the dust collecting basket 12 in the case 10 and reaches the filter 15. The air that has passed through the dust collecting basket 12 and the air that has not passed through the dust collecting basket 12 merge before the filter 15 and pass through the filter 15. Therefore, the dust collecting basket 12 partitions (partitions) the inside of the case 10 into a space communicating with the outer flow path 35 and a space communicating with the inner flow path 36. Alternatively, the dust collection basket 12 partitions (partitions) the inside of the case 10 into a space communicating with the outer flow path 35 and a space facing the filter 15. The filter 15 collects light dust, small dust, and other dust contained in the air. Air that passes through the filter 15 and contains almost no dust flows through the auxiliary filter, flows into the intake duct 27, passes through the opening at the lower portion of the intake duct 27, and is sucked from the suction port at the upper portion of the electric blower 28. The air discharged from the discharge port on the side of the electric blower 28 reaches the filter 29 through the exhaust duct 40, and the dust remaining by the filter 29 is collected. The air that has passed through the filter 29 passes through the electric blower 28, the cord reel chamber (not shown), the gap at the bottom of the cleaner body 1, and the like, and is discharged from the body exhaust port 30 to the outside of the cleaner body 1. . In particular, since the filter 29 has a dust collection efficiency equivalent to or higher than that of a filter mounted on the air cleaner, the air discharged from the cleaner body 1 to the outside is equivalent to or higher than that of the air cleaner. Has been cleaned. FIG. 2A shows a perspective view of the dust collector 2 of the embodiment of the present invention, and FIG. 2B shows a cross-sectional view seen from the side of the dust collector 2 of the embodiment of the present invention. The user can remove the dust collector 2 from the cleaner body 1 by holding the handle 16 and lifting the dust collector 2 upward. However, the dust separator 4 may be left in the cleaner body 1 and only the dust container 5 may be removed from the cleaner body 1. As shown in FIG. 2A, the outer shape of the cross section of the dust separation portion 4 viewed from the axial direction is a substantially circular shape. The outer shape of the cross section of the dust container 5 is substantially circular at the front lid 11, but is substantially square after the front lid 11, and is also substantially square at the filter 15. As shown in FIG. 2B, the opening direction at one axial end of the case 10 and the opening direction at the other axial end of the case 10 are not in a straight line and differ by about 45 to 50 degrees. That is, the axial direction of the dust container 5 is bent slightly forward from the middle. As described above, one end surface in the axial direction of the dust collector 2 (portion of the inlet pipe 3) faces slightly downward (the direction of gravity action), and the other end surface in the axial direction of the dust collector 2 (portion of the filter 15) is also , Slightly facing downward (gravity acting direction), one end surface in the axial direction and the other end surface in the axial direction of the dust collector 2 have an inverted C shape with respect to the vertical surface (gravity acting direction). Therefore, when the dust collector 2 is lifted upward, the amount of catch is reduced, and the user can easily remove the dust collector 2 from the cleaner body 1.
図3(A)に、本発明の実施例の内筒7および外筒6の斜視図を示し、図3(B)に、本発明の実施例の内筒7の裏側の斜視図を示す。外筒6の一端面は、入口管3の形成部分を除き、閉塞し、外筒6の他端面は、開口する。内筒7は、円筒部分の一端に、円環状の外延部34を有する。図3(A)に示すように、外筒6内に軸方向に内筒7の円筒部分から挿入されることによって、外筒6の他端面の外周端が外延部34の外周端に当接して、外筒6内に内筒7が形成される。図3(A)に示すように、入口管3の開口方向と凹み部8の開口とは対向している。凹み部8の内筒7の外周端部への開口方向は略下向きであり、案内管38の円周方向の開口方向は、反時計周りである。尚、案内管38の円周方向の開口方向は、時計周りであってもよい。そして、外延部34の上部に、軸方向に貫通する孔を備え、つまり外延部34の上部が開口している。開口の左壁面は、右壁面に比較して高くなっている。つまり、案内管38の円周方向の開口方向に対向する外延部34の上部の開口の壁面(左壁面)が他の壁面(右壁面)より高くなっている。そして、外延部34の表面はらせん状になっており、空気を外延部34の上部の開口に滑らかに導く流路の機能を有する。図3(B)に示すように、内筒7内の上側略半円部分に、内筒7の内側へ向かって凹み閉塞した凹み部39を備え、下側略半円部分は、内筒7内に開口している。集塵かご12に塵埃が堆積していない状態において内筒7内の空気の流量より内筒7外の空気の流量を多くする場合は、内筒7内の開口面積よりも外延部34上部の開口面積を大きくしてもよい。内筒7内への開口に比較して凹み部39の領域を多くしてもよいし、凹み部39に比較して内筒7内への開口の領域を多くしてもよい。そして、使用者は凹み部39に指を入れて、容易に塵埃分離部4あるいは内筒7を持つことができる。
3A shows a perspective view of the inner cylinder 7 and the outer cylinder 6 of the embodiment of the present invention, and FIG. 3B shows a perspective view of the back side of the inner cylinder 7 of the embodiment of the present invention. One end surface of the outer cylinder 6 is closed except for a portion where the inlet pipe 3 is formed, and the other end surface of the outer cylinder 6 is opened. The inner cylinder 7 has an annular extending portion 34 at one end of the cylindrical portion. As shown in FIG. 3A, the outer peripheral end of the other end surface of the outer cylinder 6 abuts on the outer peripheral end of the outer extension part 34 by being inserted into the outer cylinder 6 from the cylindrical portion of the inner cylinder 7 in the axial direction. Thus, the inner cylinder 7 is formed in the outer cylinder 6. As shown in FIG. 3A, the opening direction of the inlet pipe 3 and the opening of the recessed portion 8 are opposed to each other. The opening direction of the recess 8 toward the outer peripheral end of the inner cylinder 7 is substantially downward, and the opening direction of the guide tube 38 in the circumferential direction is counterclockwise. The circumferential opening direction of the guide tube 38 may be clockwise. And the hole penetrated to an axial direction is provided in the upper part of the outward extension part 34, ie, the upper part of the outward extension part 34 is opening. The left wall surface of the opening is higher than the right wall surface. That is, the wall surface (left wall surface) of the upper opening of the extension part 34 facing the opening direction in the circumferential direction of the guide tube 38 is higher than the other wall surface (right wall surface). The surface of the extended portion 34 is spiral, and has a function of a flow path that smoothly guides air to the opening above the extended portion 34. As shown in FIG. 3 (B), the upper substantially semicircular portion in the inner cylinder 7 is provided with a recessed portion 39 that is recessed toward the inner side of the inner cylinder 7, and the lower substantially semicircular portion is formed in the inner cylinder 7. Open in. When the flow rate of air outside the inner cylinder 7 is made larger than the flow rate of air inside the inner cylinder 7 in a state where dust is not accumulated in the dust collecting basket 12, the upper portion of the extended portion 34 is higher than the opening area inside the inner cylinder 7. The opening area may be increased. The area of the recessed portion 39 may be increased as compared with the opening into the inner cylinder 7, or the area of the opening into the inner cylinder 7 may be increased as compared with the recessed portion 39. Then, the user can easily hold the dust separation part 4 or the inner cylinder 7 by putting his / her finger into the recess 39.
内筒7の円筒部を抗菌効果のある金属材料で形成する場合は、先ず、金属の薄板に、直径0.1mm〜0.4mm程度の複数の貫通孔33をエッチング加工し、その後、両端を接合して円筒形状にする。貫通孔33はパンチング加工でもよい。抗菌効果のある金属材料として、例えば、ステンレス,銀,銅などがある。ステンレス,銀,銅に限らず、銀や銅を含むまたは銀や銅が表面析出した合金であればよい。金属の薄板の厚さは1mm以下であり、加工性を向上するには0.1mm〜0.5mm程度が好ましい。金属薄板の厚さが薄い場合には、強度や真円度を向上するために、円筒状の金属薄板の軸方向の両端を、成形性のよい樹脂で固定するのが好ましい。具体的には、凹み部8や案内管38を有する内筒7の略円形状の一端部の形状および円環状の外延部34を有する内筒7の他端部の形状が形成された形状に、円筒状の金属薄板をセットし、その後、型に樹脂を流し込むことによって、インサート成型する。インサート成型による場合、金属薄板は両端を接合して円筒形状にしなくてもよい。こうして、凹み部8や案内管38を有する内筒7の略円形状の一端部および円環状の外延部34を有する内筒7の他端部を樹脂で構成した、内筒7の円筒部分のみを金属材料で構成することができる。インサート成型によって、製造過程を簡素化できる。
When the cylindrical portion of the inner cylinder 7 is formed of a metal material having an antibacterial effect, first, a plurality of through-holes 33 having a diameter of about 0.1 mm to 0.4 mm are etched into a thin metal plate, and then both ends are formed. Join into a cylindrical shape. The through hole 33 may be punched. Examples of the metal material having an antibacterial effect include stainless steel, silver, and copper. The alloy is not limited to stainless steel, silver and copper, and may be any alloy containing silver or copper or having silver or copper surface-deposited. The thickness of the metal thin plate is 1 mm or less, and about 0.1 mm to 0.5 mm is preferable for improving workability. When the thickness of the metal thin plate is thin, it is preferable to fix both ends in the axial direction of the cylindrical metal thin plate with a resin having good moldability in order to improve the strength and roundness. Specifically, the shape of one end of the substantially circular shape of the inner cylinder 7 having the recess 8 and the guide tube 38 and the shape of the other end of the inner cylinder 7 having the annular outer extension 34 are formed. Then, a cylindrical metal thin plate is set, and then insert molding is performed by pouring resin into a mold. In the case of insert molding, the metal thin plate may not be formed into a cylindrical shape by joining both ends. Thus, only the cylindrical portion of the inner cylinder 7 in which the substantially circular one end portion of the inner cylinder 7 having the recessed portion 8 and the guide tube 38 and the other end portion of the inner cylinder 7 having the annular outer extending portion 34 are made of resin. Can be made of a metal material. Insert molding can simplify the manufacturing process.
図4(A)に、本発明の実施例の塵埃収容部5の前蓋11を開いた状態の斜視図を示し、図4(B)に、本発明の実施例の塵埃収容部5の後部フィルタを開いた状態の斜視図を示す。図4(A)に示すように、軸31を支点として前蓋11が下方向へ回動して開くと、軸14を支点として集塵かご12も下方向へ回動して飛び出す。この際に、集塵かご12は、軸13を支点として上下に2分割される。塵埃収容部5から飛び出した際の集塵かご12の開口は、塵埃収容部5内に収納されていた際の集塵かご12の開口に比較して拡がる。これによって、集塵かご12の内面にへばりついた塵埃を容易にはがし落とすことができる。尚、使用者が、集塵かご12の内面に沿ってティッシュペーパを装着した際には、ティッシュペーパの端を集塵かご12の開口部の枠体と前蓋11の外周端とで挟みこめば、ティッシュペーパがずれたり外れたりするのを抑制できる。図4(B)に示すように、軸32を支点としてフィルタ15も下方向へ回動して開く。これによって、使用者は、ケース10内で集塵かご12外部に堆積した塵埃を容易に排出することができ、さらに、フィルタ15のケース10側面に付着した塵埃も容易に除去することができる。
FIG. 4 (A) shows a perspective view of a state in which the front lid 11 of the dust container 5 of the embodiment of the present invention is opened, and FIG. 4 (B) shows the rear part of the dust container 5 of the embodiment of the present invention. The perspective view of the state which opened the filter is shown. As shown in FIG. 4A, when the front lid 11 is pivoted downward with the shaft 31 as a fulcrum, the dust collecting basket 12 is also pivoted downward with the shaft 14 as a fulcrum. At this time, the dust collecting basket 12 is divided into two parts up and down with the shaft 13 as a fulcrum. The opening of the dust collection basket 12 when it jumps out of the dust storage section 5 is wider than the opening of the dust collection basket 12 stored in the dust storage section 5. As a result, the dust stuck to the inner surface of the dust collecting basket 12 can be easily removed. When the user attaches the tissue paper along the inner surface of the dust collecting basket 12, the end of the tissue paper is sandwiched between the frame of the opening of the dust collecting basket 12 and the outer peripheral end of the front lid 11. In this case, the tissue paper can be prevented from shifting or coming off. As shown in FIG. 4B, the filter 15 is also rotated downward and opened with the shaft 32 as a fulcrum. As a result, the user can easily discharge the dust accumulated outside the dust collecting basket 12 in the case 10, and can easily remove the dust attached to the side surface of the case 10 of the filter 15.
図5(A)は、本発明の実施例の塵埃収容部5の前蓋11を塵埃収容部外側から見た正面図であり、図5(B)は、本発明の実施例の塵埃収容部5の前蓋11を塵埃収容部内側から見た正面図である。尚、図中の斜線部分は、断面ではなく、最も手前の表面を示している。前蓋11の下端に、ケース10に回動自在に支持される軸31を備える。前蓋11は、略円形状をしている。図5(A)に示す斜線部分の外側の略円部分は、塵埃分離部4の軸方向他端面の外周端に当接可能である。図5(A)に示す斜線部分の内側の略円部分は、塵埃分離部4の内筒7の軸方向他端面の外周端に当接可能である。前蓋11の上側つまり軸31と反対側で、斜線部分の外側の略円部分と内側の略円部分との間に、外側流路35の開口が形成される。外側流路35の表側(塵埃収容部5外側)の開口位置は、前蓋11の左右側や下側でもよいが、外側流路35の裏側(塵埃収容部5内側)の開口位置を前蓋11の上側とする場合は、外側流路35の長さを短くして空気の圧力損失を低減するために、外側流路35の表側の開口位置も、前蓋11の上側であるのが好ましい。一方、内筒7の内側に内側流路36の開口が形成される。図5(A)の正面図では、外側流路35の開口面積よりも内側流路36の開口面積のほうが大きいが、内筒7内の上側略半円部分は、凹み部39が形成されているので、内筒7内の空気の流量より内筒7外の空気の流量を多くする場合は、実質的な流路面積としては、外側流路35の開口面積よりも内側流路36の開口面積のほうが小さい。尚、斜線部分の外側の略円部分と内側の略円部分との間の外側流路35の開口が形成されていない部分は、閉塞されている。図5(B)に示す斜線部分の外側の略円部分は、ケース10の軸方向一端面の外周端および集塵かご12の開口の外周端の一部に当接する。図5(B)に示すように、前蓋11の上下方向中心線よりも上側に、外側流路35の開口が形成される。これによって、電気掃除機の停止時に、集塵かご12に堆積した塵埃が外側流路35および塵埃分離部4に逆流するのを防止することができる。ただし、前蓋11の上下方向中心線を含む中央部に、外側流路35の開口が形成されてもよい。さらに、外側流路35を覆う逆止弁(図示せず)を形成するのが好ましい。これによって、さらに、電気掃除機の停止時に、集塵かご12に堆積した塵埃が外側流路35および塵埃分離部4に逆流するのを防止することができる。一方、前蓋11の下端近傍に、内側流路36の開口が形成される。ただし、内側流路36の開口位置は、外側流路35の開口位置に対して、下側でもよいし、左右側または上側でもよい。尚、内側流路36の開口の上側の斜線部分は、集塵かご12の開口の外周端の下端に当接する。そして、図5(B)に示すように、前蓋11の裏側(塵埃収容部5の内側)では、内側流路36の開口面積よりも外側流路35の開口面積のほうが大きい。さらに、図5(A)と図5(B)に示すように、外側流路35の他端(裏側)の開口面積(図5(B))は、外側流路35の一端(表側)の開口面積(図5(A))よりも大きい。つまり、外側流路35は、一端から他端へ向かって拡がっている。一方、図5(A)と図5(B)に示すように、内側流路36の他端(裏側)の開口面積(図5(B))は、内側流路36の一端(表側)の開口面積(図5(A))よりも小さい。つまり、内側流路36は、一端から他端へ向かって狭まっている。
FIG. 5A is a front view of the front lid 11 of the dust container 5 according to the embodiment of the present invention as viewed from the outside of the dust container, and FIG. 5B is a dust container according to the embodiment of the present invention. It is the front view which looked at the front lid 11 of 5 from the dust accommodating part inner side. The hatched portion in the figure shows the frontmost surface, not the cross section. A shaft 31 that is rotatably supported by the case 10 is provided at the lower end of the front lid 11. The front lid 11 has a substantially circular shape. A substantially circular portion outside the shaded portion shown in FIG. 5A can contact the outer peripheral end of the other end surface in the axial direction of the dust separation portion 4. A substantially circular portion inside the hatched portion shown in FIG. 5A can contact the outer peripheral end of the other axial end surface of the inner cylinder 7 of the dust separating portion 4. On the upper side of the front lid 11, that is, on the side opposite to the shaft 31, an opening of the outer flow path 35 is formed between a substantially circular portion outside the shaded portion and a substantially circular portion inside. The opening position on the front side (outside of the dust container 5) of the outer channel 35 may be the left and right sides or the lower side of the front lid 11, but the opening position on the back side (inside the dust container 5) of the outer channel 35 is the front cover. 11, the opening position on the front side of the outer flow path 35 is also preferably above the front lid 11 in order to reduce the pressure loss of the air by reducing the length of the outer flow path 35. . On the other hand, an opening of the inner flow path 36 is formed inside the inner cylinder 7. In the front view of FIG. 5A, the opening area of the inner flow path 36 is larger than the opening area of the outer flow path 35, but the upper semicircular portion in the inner cylinder 7 has a recess 39. Therefore, when the flow rate of air outside the inner cylinder 7 is made larger than the flow rate of air inside the inner cylinder 7, the substantial flow path area is that the opening of the inner flow path 36 is larger than the opening area of the outer flow path 35. The area is smaller. A portion where the opening of the outer flow path 35 between the substantially circular portion outside the shaded portion and the inner substantially circular portion is not formed is closed. A substantially circular portion outside the shaded portion shown in FIG. 5B abuts on the outer peripheral end of the axial end surface of the case 10 and a part of the outer peripheral end of the opening of the dust collecting basket 12. As shown in FIG. 5B, the opening of the outer flow path 35 is formed above the vertical center line of the front lid 11. Thereby, when the vacuum cleaner is stopped, it is possible to prevent the dust accumulated in the dust collecting basket 12 from flowing back to the outer flow path 35 and the dust separator 4. However, the opening of the outer flow path 35 may be formed in the center portion including the vertical center line of the front lid 11. Furthermore, it is preferable to form a check valve (not shown) that covers the outer flow path 35. This further prevents the dust accumulated in the dust collecting basket 12 from flowing back to the outer flow path 35 and the dust separator 4 when the vacuum cleaner is stopped. On the other hand, an opening of the inner flow path 36 is formed near the lower end of the front lid 11. However, the opening position of the inner flow path 36 may be lower than the opening position of the outer flow path 35, or may be on the left or right side or the upper side. The hatched portion on the upper side of the opening of the inner flow path 36 contacts the lower end of the outer peripheral end of the opening of the dust collecting basket 12. Then, as shown in FIG. 5B, the opening area of the outer flow path 35 is larger than the opening area of the inner flow path 36 on the back side of the front lid 11 (inside the dust container 5). Furthermore, as shown in FIGS. 5A and 5B, the opening area (FIG. 5B) of the other end (back side) of the outer flow path 35 is equal to that of one end (front side) of the outer flow path 35. It is larger than the opening area (FIG. 5A). That is, the outer flow path 35 extends from one end to the other end. On the other hand, as shown in FIGS. 5 (A) and 5 (B), the opening area (FIG. 5 (B)) of the other end (back side) of the inner flow path 36 is equal to that of one end (front side) of the inner flow path 36. It is smaller than the opening area (FIG. 5A). That is, the inner flow path 36 is narrowed from one end to the other end.
図6に、本発明の実施例の塵埃収容部5の前蓋11を除いたときの塵埃分離部側から見た正面図を示す。尚、図5と同様に、図中の斜線部分は、断面ではなく、最も手前の表面を示している。略円形状の斜線部分は、前蓋11の外周端に当接する。図6に示すように、ケース10の軸方向一端面の開口の外周端は、集塵かご12の開口の外周端の一部に当接する。また、図6に示すように、ケース10の軸方向一端面の開口の80%以上は、集塵かご12の開口が占めている。そして、ケース10の開口の集塵かご12の開口以外の領域(残り20%程度以下)は、内側流路36の開口に対向し、内側流路36に連通する。
FIG. 6 shows a front view as seen from the dust separating portion side when the front lid 11 of the dust accommodating portion 5 of the embodiment of the present invention is removed. As in FIG. 5, the hatched portion in the figure indicates the frontmost surface, not the cross section. The substantially circular shaded portion is in contact with the outer peripheral end of the front lid 11. As shown in FIG. 6, the outer peripheral end of the opening on one end surface in the axial direction of the case 10 abuts a part of the outer peripheral end of the opening of the dust collecting basket 12. As shown in FIG. 6, 80% or more of the opening on one end surface in the axial direction of the case 10 is occupied by the opening of the dust collecting basket 12. A region other than the opening of the dust collection basket 12 in the opening of the case 10 (the remaining 20% or less) faces the opening of the inner flow path 36 and communicates with the inner flow path 36.
図7は、本発明の実施例の電気掃除機の概観図である。電気掃除機は、掃除機本体1以外に、吸口を有する吸込具50と、一端が吸込具50に連通し伸縮自在な継手管(延長管)51と、一端が継手管51の他端に連通し使用者が握る把手53や操作ボタン/スイッチを有する操作管52と、一端が操作管52の他端に連通し他端にホース継手管20が形成されるホース54とを備える。掃除機本体1の本体吸気口21にホース継手管20が挿入され、保持可能である。また、掃除機本体1の両側面に車輪55を備える。そして、使用者から操作ボタン/スイッチへの操作によって電気掃除機の電源がONされると、電動送風機28が作動して吸引力を発生する。吸込具50の吸口から吸い込まれた空気は、継手管51,操作管52,ホース54,ホース継手管20の順に通過して、掃除機本体1に流入する。
FIG. 7 is a schematic view of a vacuum cleaner according to an embodiment of the present invention. In addition to the vacuum cleaner main body 1, the vacuum cleaner includes a suction tool 50 having a suction port, one end communicating with the suction tool 50, a telescopic joint pipe (extension pipe) 51, and one end communicating with the other end of the joint pipe 51. An operation tube 52 having a handle 53 and an operation button / switch that are gripped by the user, and a hose 54 having one end communicating with the other end of the operation tube 52 and the other end forming the hose coupling tube 20 are provided. The hose joint pipe 20 is inserted into the main body inlet 21 of the cleaner body 1 and can be held. Further, wheels 55 are provided on both side surfaces of the cleaner body 1. And if the power supply of a vacuum cleaner is turned ON by operation to an operation button / switch from a user, the electric air blower 28 will act | operate and will generate | occur | produce suction | attraction force. The air sucked from the suction port of the suction tool 50 passes through the joint pipe 51, the operation pipe 52, the hose 54, and the hose joint pipe 20 in this order, and flows into the cleaner body 1.
図8は、本発明の実施例の掃除機本体1の斜視図である。掃除機本体1の上面の中央付近には、一端が掃除機本体1に回動可能に軸によって支持された集塵装置2用の上カバー56を備え、掃除機本体1の上面のカバー56よりも後側には、掃除機本体1に回動可能に軸によって支持され使用者が掃除機本体1を持ち上げるための把手37を備える。
FIG. 8 is a perspective view of the cleaner body 1 according to the embodiment of the present invention. In the vicinity of the center of the upper surface of the cleaner body 1, an upper cover 56 for the dust collector 2, one end of which is rotatably supported on the cleaner body 1 by a shaft, is provided. On the rear side, a handle 37 is provided that is rotatably supported by the vacuum cleaner main body 1 by a shaft so that the user can lift the vacuum cleaner main body 1.
本発明の実施例によれば、使用者の手を煩わせることなく塵埃を圧縮し、圧縮し堆積した塵埃を使用者が容易に排出し、さらに、吸引力の低下を抑制することができる。上カバー56は、閉じた状態で集塵装置2の把手16を覆う大きさおよび位置に形成されるのが好ましい。さらに、上カバー56は、掃除機本体1の作動中は開かないように、その回動がロックされる、または上カバー1が開いた場合掃除機本体1の作動が停止するのが好ましい。上カバー56により、掃除機本体1の作動中に使用者が集塵装置2を取り外すのを防止することができ、電気掃除機の安全性を向上することができる。
According to the embodiment of the present invention, dust can be compressed without bothering the user, the user can easily discharge the dust that has been compressed and accumulated, and a reduction in suction force can be suppressed. The upper cover 56 is preferably formed in a size and position that covers the handle 16 of the dust collector 2 in a closed state. Furthermore, it is preferable that the rotation of the upper cover 56 is locked so that the upper cover 56 does not open during the operation of the cleaner body 1 or the operation of the cleaner body 1 is stopped when the upper cover 1 is opened. The upper cover 56 can prevent the user from removing the dust collector 2 during the operation of the cleaner body 1 and can improve the safety of the vacuum cleaner.
実施例1の内筒7の詳細を、実施例2として説明する。
Details of the inner cylinder 7 of the first embodiment will be described as a second embodiment.
本発明の実施例2の電気掃除機は、集塵装置2が円周面に複数の貫通孔33を有する内筒7を内包し、内筒7の軸方向の一端が閉塞され、内筒7の軸方向の他端が開口して電動送風機28側へ連通し、内筒7の軸方向の一端が、集塵装置2の入口管3の出口側開口に対向した位置に形成される。そして、内筒7の軸方向の一端が、集塵装置2の入口管3から吸い込まれた空気を円周方向へ旋回させるよう構成されることを特徴とする。
In the vacuum cleaner according to the second embodiment of the present invention, the dust collector 2 includes the inner cylinder 7 having a plurality of through holes 33 on the circumferential surface, and one end in the axial direction of the inner cylinder 7 is closed. The other end in the axial direction is opened and communicated with the electric blower 28 side, and one end in the axial direction of the inner cylinder 7 is formed at a position facing the outlet side opening of the inlet pipe 3 of the dust collector 2. And the one end of the axial direction of the inner cylinder 7 is comprised so that the air suck | inhaled from the inlet tube 3 of the dust collector 2 may be rotated in the circumferential direction.
または、本発明の実施例2の電気掃除機は、内筒7の軸方向の一端の閉塞部が、集塵装置2の入口管3から吸い込まれた空気を円周方向へ旋回させる機能を持つ形状を有することを特徴とする。
Or the vacuum cleaner of Example 2 of this invention has the function in which the obstruction | occlusion part of the axial direction end of the inner cylinder 7 rotates the air inhaled from the inlet pipe 3 of the dust collector 2 to the circumferential direction. It has a shape.
または、本発明の実施例2の電気掃除機は、内筒7の軸方向の一端の閉塞部が、内筒7の軸方向の内側へ凹んだ形状を有し(例えば、凹み部8)、凹んだ形状の一部は、内筒7の円周面に開口することを特徴とする。
Or the vacuum cleaner of Example 2 of this invention has the shape where the obstruction | occlusion part of the axial direction end of the inner cylinder 7 was dented inside the axial direction of the inner cylinder 7 (for example, the recessed part 8), A part of the recessed shape is characterized by opening in the circumferential surface of the inner cylinder 7.
そして、本発明の実施例2によれば、内筒7の一端に旋回機能を持たせることによって、幅を大きくすることなく集塵装置2の軸方向の長さを短くでき、電気掃除機をコンパクトにできる。
And according to Example 2 of this invention, by giving the turning function to the end of the inner cylinder 7, the axial length of the dust collector 2 can be shortened without increasing the width, and the vacuum cleaner can be Can be compact.
図9は、本発明の実施例2の内筒7を円筒部分側から見た正面図である。内筒7の円筒部分は、中空の半円柱形状の円柱部分57と中空円錐台形状の円錐台部分58とから構成される。円柱部分57は、内筒7の円筒部分の先端側に位置し、円錐台部分58は、内筒7の円筒部分の根元側に位置する。円錐台部分58の根元は、外延部34の内周端に接合している。円錐台部分58によって、円柱部分57と外延部34との接合部がなだらかになり、空気の流れの剥離や乱流の発生を抑制し、吸い込んだ空気のエネルギー損失を低減し、また騒音も抑制できる。内筒7は、外延部34と案内管38(ガイド部材)と円柱部分57と円錐台部分58とが一体成形されるのが好ましい。円筒部分は、円柱部分57と円錐台部分58とから構成されるのではなく、円柱部分57のみまたは円錐台部分58のみで構成されてもよい。つまり、円柱部分57は円柱形状であってもよいし、円錐台形状であってもよい。
FIG. 9 is a front view of the inner cylinder 7 according to the second embodiment of the present invention as viewed from the cylindrical portion side. The cylindrical portion of the inner cylinder 7 includes a hollow semi-columnar column portion 57 and a hollow truncated cone portion 58. The column portion 57 is located on the distal end side of the cylindrical portion of the inner cylinder 7, and the truncated cone portion 58 is located on the root side of the cylindrical portion of the inner cylinder 7. The base of the truncated cone part 58 is joined to the inner peripheral end of the outer extension 34. The frustoconical portion 58 gently smoothes the joint between the cylindrical portion 57 and the extension 34, suppresses air flow separation and turbulence, reduces the energy loss of the sucked air, and suppresses noise. it can. In the inner cylinder 7, it is preferable that the outer extending portion 34, the guide tube 38 (guide member), the columnar portion 57, and the truncated cone portion 58 are integrally formed. The cylindrical portion is not composed of the column portion 57 and the truncated cone portion 58 but may be composed of only the column portion 57 or only the truncated cone portion 58. That is, the columnar portion 57 may have a columnar shape or a truncated cone shape.
R1は円柱部分57の外形半径、R2は円錐台部分58の外形半径、R3は外延部34の外形半径、R4は案内管38の外形半径である。外延部34の外形は略真円である。円柱部分57の半円も、略真円である。外延部34と円柱部分57と円錐台部分58とは、同心軸上に形成され、R1<R2<R3の関係である。例えば、R1は3cm程度で、R2は5cm程度で、R3は、6.5cm程度である。案内管38の軸心は、円柱部分57の軸心に対して図9では左側にずれて位置し、R1<R4<R2の関係である。例えば、R4は4cm程度である。円柱部分57の円周方向の一端(図9の下側)は終端し、他端(図9の上側)は案内管38に接合する。案内管38の側壁は、円柱部分57の他端から案内管終端部59の手前に至るまで、曲率半径R4で半円形状になだらかに湾曲し、案内管終端部59の側壁でも、円柱部分57の外側で円柱部分57の外周に沿って(円錐台部分58の外周に沿って)なだらかに湾曲する。つまり、案内管38は、一端が凹み部8の開口に連結され、他端が円柱部分57の外側で円柱部分57の外周に沿った方向(円錐台部分58の外周に沿った方向)に向き、その間180°転向するように、略半円形状になだらかに湾曲する。凹み部8自身は、凹み部8の側壁から底部中心に向かって段差なく、なだらかに球状に形成されるのが好ましく、凹み部8から案内管38の接合部も、段差なく、なだらかに形成されるのが好ましい。これによって、吸い込んだ空気のエネルギー損失を低減し、また騒音も抑制できる。
R1 is the outer radius of the cylindrical portion 57, R2 is the outer radius of the truncated cone portion 58, R3 is the outer radius of the extension 34, and R4 is the outer radius of the guide tube 38. The outer shape of the extended portion 34 is a substantially perfect circle. The semicircle of the cylindrical portion 57 is also a substantially perfect circle. The extension part 34, the columnar part 57, and the truncated cone part 58 are formed on concentric axes and have a relationship of R1 <R2 <R3. For example, R1 is about 3 cm, R2 is about 5 cm, and R3 is about 6.5 cm. The axial center of the guide tube 38 is shifted to the left in FIG. 9 with respect to the axial center of the cylindrical portion 57, and has a relationship of R1 <R4 <R2. For example, R4 is about 4 cm. One end of the cylindrical portion 57 in the circumferential direction (lower side in FIG. 9) is terminated, and the other end (upper side in FIG. 9) is joined to the guide tube 38. The side wall of the guide tube 38 is gently curved in a semicircular shape with a radius of curvature R 4 from the other end of the column portion 57 to the front of the guide tube end portion 59. Is gently curved along the outer periphery of the cylindrical portion 57 (along the outer periphery of the truncated cone portion 58). That is, one end of the guide tube 38 is connected to the opening of the recessed portion 8, and the other end faces the direction along the outer periphery of the cylindrical portion 57 outside the cylindrical portion 57 (the direction along the outer periphery of the truncated cone portion 58). In the meantime, it is gently curved into a substantially semicircular shape so as to turn 180 °. The recess 8 itself is preferably formed in a gentle spherical shape with no step from the side wall of the recess 8 toward the center of the bottom, and the joint between the recess 8 and the guide tube 38 is also formed smoothly without a step. It is preferable. Thereby, the energy loss of the inhaled air can be reduced and noise can be suppressed.
円柱部分57の厚さD1(外形R1と凹み部8の側壁との間)は3mm程度であり、3mm程度の厚さD1の内側は、中空となっており、その空間は貫通孔33に連通する。円柱部分57の一端部は、空気の流れがほぼ180度転向する流路の内壁を形成するため、厚いほうが、騒音を低減できる。そこで、円柱部分57の厚さD1が3mm程度であるのに対して、円柱部分57の一端部での厚さを6mm程度と厚くするのが好ましい。つまり、円柱部分57の一端部の曲率半径を3mm程度とするのが好ましい。これによって、騒音を低減できる。尚、円柱部分57の厚さD1も厚くすると、塵埃がつまり易くなるため、円柱部分57の厚さD1は3mm程度であるのが好ましい。凹み部8の半径(R1−D1)は、入口管3の出口開口の内側半径に一致または若干(1mm以内)大きいほうが好ましい。凹み部8の半径が、入口管3の出口開口の内径よりも小さいと、塵埃がつまったり、空気のエネルギー損失が大きくなったり、騒音が増加する恐れがあるからである。
The cylindrical portion 57 has a thickness D1 (between the outer shape R1 and the side wall of the recessed portion 8) of about 3 mm, the inside of the thickness D1 of about 3 mm is hollow, and the space communicates with the through hole 33. To do. One end of the cylindrical portion 57 forms the inner wall of the flow path where the air flow turns approximately 180 degrees, so that the thicker one can reduce noise. Therefore, the thickness D1 of the cylindrical portion 57 is preferably about 3 mm, whereas the thickness at one end of the cylindrical portion 57 is preferably increased to about 6 mm. That is, it is preferable that the radius of curvature at one end of the cylindrical portion 57 is about 3 mm. Thereby, noise can be reduced. In addition, if the thickness D1 of the cylindrical portion 57 is also increased, dust is easily clogged. Therefore, the thickness D1 of the cylindrical portion 57 is preferably about 3 mm. The radius (R1-D1) of the recess 8 is preferably equal to or slightly larger (within 1 mm) than the inner radius of the outlet opening of the inlet pipe 3. This is because if the radius of the recess 8 is smaller than the inner diameter of the outlet opening of the inlet pipe 3, dust may be clogged, air energy loss may increase, and noise may increase.
貫通孔33は、円錐台部分58や案内管38には形成されず、円柱部分57の外周面にのみ形成されるのが好ましい。ただし、貫通孔33は、円柱部分57の外周面だけでなく、円錐台部分58や案内管38にも形成されてもよい。貫通孔33の直径は2mm程度であってもよい。貫通孔33の直径を2mm程度とすると、貫通孔33の数は100個程度であるのが好ましい。
The through-hole 33 is preferably not formed in the truncated cone portion 58 or the guide tube 38 but formed only on the outer peripheral surface of the cylindrical portion 57. However, the through-hole 33 may be formed not only in the outer peripheral surface of the cylindrical portion 57 but also in the truncated cone portion 58 and the guide tube 38. The diameter of the through hole 33 may be about 2 mm. When the diameter of the through hole 33 is about 2 mm, the number of the through holes 33 is preferably about 100.
案内管38の一部である案内管終端部59は、半径方向から見ると、案内管終端部59の円周方向根元部60から案内管終端部59の円周方向先端部61へ向かって略「く」の字形状を有する。図9に示すように、案内管終端部59と円柱部分57とは、半径方向から見ると重複している。案内管38の終端(案内管終端部59)が円柱部分57の一端と重複する位置まで延びて形成されることによって、吸い込んだ空気に十分な旋回力を与えることができる。案内管終端部59に対して円周方向の反対側(180度反対側)に、外側流路35の一端開口(外延部34の上部の開口)が形成される。貫通孔33は、少なくとも案内管終端部59から外側流路35の一端開口までの間に形成されていればよい。外側流路35に塵埃が流れ易くするために、外側流路35の一端開口の円周方向の長さは長いほうが好ましい。外側流路35の一端開口の下流側壁面65(左壁面)が上流側壁面66(右壁面)より高くなっており、下流側壁面65は、軸方向から見ると内周側から外周側へ向かって傾斜または湾曲しており、内周側よりも外周側が上流側壁面6へ向かって円周方向に長い。これは、万が一髪の毛や糸くずなどの長さのあるごみが下流側壁面65に引っ掛かった場合、外周側を円周方向に長くすることで、これらのごみを内周側へ導く力が働き、徐々にバランスを崩し、塵埃収容部5にごみを収めるためである。塵埃収容部5に蓄積された塵埃が前蓋11の外側流路35の他端開口からこぼれ落ちるのを抑制するために、外側流路35の一端開口は、上側に配置されるのが好ましい。そこで、遠心分離距離を長くしたい場合には、外側流路35の一端開口の位置はそのままにして、凹み部8の開口の形成位置および案内管終端部59の形成位置は、時計回り方向で外側流路35の一端開口に近い位置、図9では左側の位置にすればよい。
When viewed from the radial direction, the guide tube end portion 59 which is a part of the guide tube 38 is substantially from the circumferential root portion 60 of the guide tube end portion 59 toward the circumferential tip 61 of the guide tube end portion 59. It has the shape of "<". As shown in FIG. 9, the guide tube end portion 59 and the cylindrical portion 57 overlap when viewed from the radial direction. By forming the terminal end (guide tube terminal portion 59) of the guide tube 38 so as to overlap with one end of the cylindrical portion 57, a sufficient turning force can be applied to the sucked air. One end opening of the outer flow path 35 (opening of the upper part of the extension part 34) is formed on the opposite side (180 degree opposite side) in the circumferential direction with respect to the guide pipe end part 59. The through hole 33 only needs to be formed at least between the guide tube terminal portion 59 and one end opening of the outer flow path 35. In order to facilitate the flow of dust into the outer flow path 35, it is preferable that the circumferential length of one end opening of the outer flow path 35 is longer. The downstream side wall surface 65 (left wall surface) of one end opening of the outer flow path 35 is higher than the upstream side wall surface 66 (right wall surface), and the downstream side wall surface 65 extends from the inner peripheral side to the outer peripheral side when viewed in the axial direction. And the outer peripheral side is longer in the circumferential direction toward the upstream side wall surface 6 than the inner peripheral side. This is because, in the unlikely event that garbage with length such as hair or lint is caught on the downstream side wall surface 65, the outer circumferential side is lengthened in the circumferential direction, and the force to guide these garbage to the inner circumferential side works. This is because the balance is gradually lost and dust is stored in the dust container 5. In order to prevent dust accumulated in the dust container 5 from spilling from the other end opening of the outer flow path 35 of the front lid 11, the one end opening of the outer flow path 35 is preferably arranged on the upper side. Therefore, when it is desired to increase the centrifugal separation distance, the position of the opening of one end of the outer flow path 35 is left as it is, and the position of forming the opening of the recess 8 and the position of forming the guide tube terminal portion 59 are outward in the clockwise direction. A position close to one end opening of the flow path 35, that is, a position on the left side in FIG.
図10も、本発明の実施例2の内筒7を円筒部分側から見た正面図である。図10中の矢印は、吸い込んだ空気の流れ方向を示す。凹み部8に略軸方向に流入した空気は、凹み部8によって半径方向に転向し、案内管38によって円周方向に転向し、内筒7と外筒6との間を半周程度(つまり案内管終端部59から外側流路35の一端開口まで)円周方向および軸方向へ流れ(旋回し)、流入した空気の大部分が外側流路35の一端開口に流れ込む(流れ64)。よって、凹み部8と案内管38は、略軸方向に流入した空気を旋回させる機能を有する。内筒7と外筒6との間を半周程度(つまり案内管終端部59から外側流路35の一端開口まで)円周方向および軸方向へ流れる(旋回する)空気の一部は、貫通孔33から内筒7内へ流れ込む(流れ63)。また、外側流路35の一端開口に流れなかった空気は、案内管38と外筒6との間を半周程度(つまり外側流路35の一端開口から案内管終端部59まで)円周方向に流れ(流れ64)、案内管38から出てきた空気と合流する。本発明の実施例2では、内筒7の外側を旋回した空気は、外側流路35を通って、電動送風機28に連通する塵埃収容部5に流れ込むため、遠心分離距離を長くする必要はなく、半周程度でよい。よって、内筒7の高さひいては塵埃分離部4の軸方向長さを短くでき、集塵装置2の軸方向長さを短くでき、掃除機本体1をコンパクトにできる。塵埃分離部4の外形直径は、内筒7の外形直径すなわち外延部34の外形直径2R3にほぼ相当する。塵埃分離部4の軸方向長さ(入口管3は含まず)は、内筒7の軸方向高さH5にほぼ相当する。そして、H5<2R3の関係を有する。よって、塵埃分離部4の軸方向高さは、塵埃分離部4の上下幅あるいは左右幅よりも小さい。例えば、2R3は13cm程度であり、H5は7cm程度である。外側流路35の一端開口に流れ込む空気(流れ62)の流量を流量V1、貫通孔33から内筒7内へ流れ込む空気(流れ63)の流量を流量V2、外側流路35の一端開口に流れなかった空気(流れ64)の流量を流量V3とすると、V1>V2>V3の関係を有する。また、入口管3での流速に比較して、案内管38での流速が高く、案内管38での流速に比較して、外側流路35での流速が高い。つまり、流れ62は、案内管38で加速し、外側流路35でも加速して、2段階に加速する。よって、入口管3の流路断面に比較して、案内管38の流路断面が小さく、案内管38の流路断面に比較して、外側流路35の流路断面が小さい。
FIG. 10 is also a front view of the inner cylinder 7 according to the second embodiment of the present invention viewed from the cylindrical portion side. The arrows in FIG. 10 indicate the flow direction of the sucked air. The air that has flowed into the recessed portion 8 in the substantially axial direction is turned in the radial direction by the recessed portion 8 and turned in the circumferential direction by the guide tube 38, and is about a half turn between the inner tube 7 and the outer tube 6 (that is, guidance From the pipe end portion 59 to the one end opening of the outer flow path 35, it flows (swivels) in the circumferential direction and the axial direction, and most of the inflowed air flows into one end opening of the outer flow path 35 (flow 64). Therefore, the recess 8 and the guide tube 38 have a function of turning the air that has flowed in substantially the axial direction. A portion of the air flowing (swirling) in the circumferential direction and the axial direction between the inner cylinder 7 and the outer cylinder 6 (ie, from the guide tube terminal portion 59 to the opening of one end of the outer flow path 35) is a through hole. It flows into the inner cylinder 7 from 33 (flow 63). In addition, the air that has not flowed to the one end opening of the outer flow path 35 is approximately half a circumference between the guide tube 38 and the outer cylinder 6 (that is, from one end opening of the outer flow path 35 to the guide tube end portion 59) in the circumferential direction. The flow (flow 64) merges with the air coming out of the guide tube 38. In the second embodiment of the present invention, the air swirled outside the inner cylinder 7 flows into the dust container 5 that communicates with the electric blower 28 through the outer flow path 35, so there is no need to increase the centrifugal separation distance. It may be about half a circle. Therefore, the height of the inner cylinder 7 and thus the axial length of the dust separator 4 can be shortened, the axial length of the dust collector 2 can be shortened, and the cleaner body 1 can be made compact. The outer diameter of the dust separation part 4 substantially corresponds to the outer diameter of the inner cylinder 7, that is, the outer diameter 2R3 of the extended part 34. The axial length of the dust separator 4 (excluding the inlet pipe 3) substantially corresponds to the axial height H5 of the inner cylinder 7. And it has the relationship of H5 <2R3. Therefore, the axial height of the dust separator 4 is smaller than the vertical width or the horizontal width of the dust separator 4. For example, 2R3 is about 13 cm and H5 is about 7 cm. The flow rate of the air (flow 62) flowing into the one end opening of the outer flow path 35 is the flow rate V1, the flow rate of the air (flow 63) flowing into the inner cylinder 7 from the through hole 33 is the flow rate V2, and the one flow opening to the one end opening of the outer flow path 35. If the flow rate of the air (flow 64) that does not exist is the flow rate V3, the relationship is V1> V2> V3. In addition, the flow rate in the guide tube 38 is higher than the flow rate in the inlet tube 3, and the flow rate in the outer flow path 35 is higher than the flow rate in the guide tube 38. That is, the flow 62 is accelerated by the guide tube 38 and accelerated by the outer flow path 35, and is accelerated in two stages. Therefore, the flow path cross section of the guide pipe 38 is smaller than the flow path cross section of the inlet pipe 3, and the flow path cross section of the outer flow path 35 is smaller than the flow path cross section of the guide pipe 38.
半径方向の流路幅Wは、案内管38の案内管終端部59での流路幅W1に対して、案内管38を出た位置での流路幅W2は拡がり、案内管終端部59の出口から外側流路35の一端開口まで一定(流路幅W2)であり、外側流路35の一端開口から案内管終端部59までは徐々に流路幅W2から流路幅W3まで狭くなり、案内管終端部59では流路幅W3となる。そしてW2>W1>W3の関係を有する。W3が小さすぎると、塵埃がつまる恐れがあるため、例えば、W3は、1.0cm程度である。例えば、W2は、R3−R1であり、4cm程度である。W1は、W2−W3−(案内管終端部59の半径方向の厚み)であり、3cmよりも若干小さい。
The flow path width W in the radial direction is larger than the flow path width W1 at the guide pipe end portion 59 of the guide pipe 38, and the flow path width W2 at the position exiting the guide pipe 38 is widened. From the outlet to one end opening of the outer flow path 35 is constant (flow path width W2), and from one end opening of the outer flow path 35 to the guide tube end portion 59 gradually decreases from the flow path width W2 to the flow path width W3. The guide tube end portion 59 has a flow path width W3. And it has the relationship of W2> W1> W3. If W3 is too small, dust may be clogged. For example, W3 is about 1.0 cm. For example, W2 is R3-R1 and is about 4 cm. W1 is W2-W3- (the thickness in the radial direction of the guide tube end portion 59), which is slightly smaller than 3 cm.
図11は、本発明の実施例2の内筒7を円筒部分側から見た斜視図である。案内管終端部59の側壁は、円周方向に対して垂直に終端しているのではなく、2段階に屈曲した略「く」の字形状に終端している。具体的には、案内管終端部59の軸方向先端部から軸方向中間部までは円周方向に対する垂線に近い角度で終端し、案内管終端部の案内管終端部59の軸方向根元部までは円周方向に対する垂線よりもかなり傾斜して終端している。例えば、案内管終端部59の側壁が、案内管終端部59の円周方向根元部60の位置で、円周方向に対して垂直に終端すると、十分な旋回力を与えることができず、十分に塵埃を分離できない。一方、案内管終端部59の円周方向先端部61の位置で、円周方向に対して垂直に終端すると、旋回力が強すぎ、旋回の一周目で外側流路35に流れ込む空気が少なくなり、外側流路35に塵埃(特に比重の大きい塵埃)が吸い込まれず、塵埃分離部4内に塵埃が残る場合がある。特に、本発明では、塵埃分離部4の入口側が重力方向下に位置に、出口側が重力方向上に位置するため、外側流路35に塵埃が吸い込まれず、塵埃分離部4内に塵埃が残るのが顕著である。そこで、案内管終端部59を略「く」の字形状に終端することによって、凹み部8に流入した空気に、必要十分な旋回力を与えることができる。さらに、凹み部8に流入した空気は、軸方向の下流側へ向かって流れることになるため、案内管終端部59で見ると、案内管終端部59の軸方向先端側よりも軸方向根元側の流量が多くなる(圧力が高くなる)。そこで、案内管終端部59の軸方向先端側よりも軸方向根元側を円周方向に長くすることによって、流量の多い案内管終端部59の軸方向根元側に十分な旋回力を与えることができる。尚、案内管終端部59を略「く」の字形状にする代わりに、案内管終端部59の側壁を軸方向先端側から軸方向根元側に向かって1段階で円周方向に徐々に傾斜していてもよい。
FIG. 11 is a perspective view of the inner cylinder 7 according to the second embodiment of the present invention as viewed from the cylindrical portion side. The side wall of the guide tube end portion 59 does not end perpendicularly to the circumferential direction, but ends in a substantially “<” shape bent in two stages. Specifically, the guide tube end portion 59 is terminated at an angle close to a perpendicular to the circumferential direction from the axial tip portion to the axial intermediate portion, and to the axial base portion of the guide tube end portion 59 of the guide tube end portion. Terminates at a much greater slope than the normal to the circumferential direction. For example, if the side wall of the guide tube end portion 59 terminates perpendicularly to the circumferential direction at the position of the circumferential root portion 60 of the guide tube end portion 59, a sufficient turning force cannot be applied, and sufficient The dust cannot be separated. On the other hand, if it terminates perpendicularly to the circumferential direction at the position of the circumferential tip 61 of the guide tube end portion 59, the turning force is too strong and less air flows into the outer flow path 35 in the first turn. In some cases, dust (especially dust having a large specific gravity) is not sucked into the outer flow path 35, and dust remains in the dust separator 4. In particular, in the present invention, since the inlet side of the dust separator 4 is positioned below the gravitational direction and the outlet side is positioned above the gravitational direction, the dust is not sucked into the outer flow path 35 and the dust remains in the dust separator 4. Is remarkable. Therefore, by ending the guide tube terminal portion 59 in a substantially “<” shape, a necessary and sufficient turning force can be applied to the air flowing into the recessed portion 8. Further, since the air that has flowed into the recessed portion 8 flows toward the downstream side in the axial direction, when viewed at the guide tube end portion 59, the axial base side of the guide tube end portion 59 rather than the axial front end side. The flow rate increases (pressure increases). Thus, by making the axial base side longer in the circumferential direction than the axial front end side of the guide pipe terminal end 59, a sufficient turning force can be applied to the axial base side of the guide pipe terminal end 59 having a large flow rate. it can. In addition, instead of making the guide tube end portion 59 into a substantially “<” shape, the side wall of the guide tube end portion 59 is gradually inclined in the circumferential direction in one step from the axial front end side to the axial root side. You may do it.
図12は、本発明の実施例2の内筒7を外延部裏側から見た上面図である。図13は、本発明の実施例2の内筒7を外延部裏側から見た斜視図である。パッキング9(シール部材)は、3本のネジ67(取付部材)によって、外延部34の裏側に取り付けられている。パッキング9は、外周側に位置する円環状のリップ68(張り出し部)と内周側に位置する円環状のリップ69(張り出し部)を備える。リップ68は、外側流路35における内筒7と前蓋11との気密を保持するために設けられており、リップ69は、内側流路36における内筒7と前蓋11との気密を保持するために設けられている。そして、リップ68およびリップ69は、内周側から外周側へ向かって延びて形成される。よって、集塵分離部4に対して集塵収容部5が取り付けられた場合に、リップ68およびリップ69が集塵収容部5の前蓋11に当接し、弾性変形して、気密を保持する。さらに、電動送風機28が作動して、吸引力が発生すると、集塵収容部5に集塵分離部4が吸い寄せられて、リップ68およびリップ69がさらに弾性変形して、気密を保持する。よって、電動送風機28が停止している場合に比較して電動送風機28が作動している場合は、集塵収容部5と集塵分離部4との間の気密の保持力が増す。ただし、リップ69は、外周側から内周側へ向かって延びて形成されるのが好ましい、リップ69が、内周側から外周側へ向かって延びて形成されると、外側流路35の終端の内周側の部分100に、外側流路35からの塵埃が引っかかったり、漏れたりする。リップ69を、外周側から内周側へ向かって延びて形成することにより、塵埃が引っかかったり、漏れたりするのを抑制できる。尚、パッキング9は、リップ68およびリップ69を含めゴムなどの弾性材料によって一体に成形されるのが好ましい。
FIG. 12 is a top view of the inner cylinder 7 according to the second embodiment of the present invention as viewed from the rear side of the outer extension portion. FIG. 13: is the perspective view which looked at the inner cylinder 7 of Example 2 of this invention from the outer extension part back side. The packing 9 (seal member) is attached to the back side of the extended portion 34 by three screws 67 (attachment members). The packing 9 includes an annular lip 68 (projecting portion) located on the outer peripheral side and an annular lip 69 (projecting portion) located on the inner peripheral side. The lip 68 is provided to keep the airtightness between the inner cylinder 7 and the front lid 11 in the outer flow path 35, and the lip 69 keeps the airtightness between the inner cylinder 7 and the front lid 11 in the inner flow path 36. Is provided to do. The lip 68 and the lip 69 are formed extending from the inner peripheral side toward the outer peripheral side. Therefore, when the dust collection container 5 is attached to the dust collection separation part 4, the lip 68 and the lip 69 abut against the front lid 11 of the dust collection container 5, and elastically deform to keep the airtight. . Further, when the electric blower 28 is activated and a suction force is generated, the dust collecting / separating portion 4 is sucked into the dust collecting housing portion 5, and the lip 68 and the lip 69 are further elastically deformed to keep the airtightness. Therefore, when the electric blower 28 is operating as compared to the case where the electric blower 28 is stopped, the airtight holding force between the dust collection housing 5 and the dust collection separation unit 4 is increased. However, the lip 69 is preferably formed extending from the outer peripheral side toward the inner peripheral side. When the lip 69 is formed extending from the inner peripheral side toward the outer peripheral side, the end of the outer flow path 35 is formed. The dust from the outer flow path 35 is caught on or leaked from the inner peripheral portion 100 of the inner wall. By forming the lip 69 so as to extend from the outer peripheral side toward the inner peripheral side, it is possible to prevent dust from being caught or leaked. The packing 9 is preferably formed integrally with an elastic material such as rubber including the lip 68 and the lip 69.
円筒部分の内周側(リップ69の内周側)の略上半分は、円筒部分の軸方向内側に凹んだ凹み部39を有するパッキング9によって閉塞され、円筒部分の内周側(リップ69の内周側)の略下半分は、パッキング9によって閉塞されずに開口している。この開口は、内側流路36を形成している。パッキング9によって閉塞された部分の面積は、開口している部分の面積と同一であってもよいし、小さくてもよい。パッキング9によって閉塞された部分の面積を、開口している部分の面積よりも小さくすることによって、内側流路36を流れる空気のエネルギー損失や騒音を低減できる。
The substantially upper half of the inner peripheral side of the cylindrical portion (the inner peripheral side of the lip 69) is closed by a packing 9 having a recessed portion 39 that is recessed inward in the axial direction of the cylindrical portion, and the inner peripheral side of the cylindrical portion (the lip 69). The substantially lower half of the inner peripheral side is open without being closed by the packing 9. This opening forms an inner flow path 36. The area of the portion closed by the packing 9 may be the same as or smaller than the area of the opened portion. By making the area of the portion closed by the packing 9 smaller than the area of the opened portion, energy loss and noise of the air flowing through the inner flow path 36 can be reduced.
図14は、本発明の実施例2の内筒7を上側から見た側面図である。外側流路35の一端開口の下流側壁面65(左壁面)が上流側壁面66(右壁面)より高くなっており、この高さの差分dHだけ開口している。これによって、円筒部分の外側の流れは、下流側壁面65に沿ってスムーズに軸方向へ向きを変えることができ、旋回流に含まれる塵埃も塵埃収容部5へ流れやすくなる。外側流路35の内壁面101は、外側流路35の入口である下流側壁面65から外側流路35の出口である内筒7の軸方向他端面に向かって、円周方向に傾斜または湾曲して形成される。これによって、塵埃が外側流路35内をスムーズに流れることができる。尚、外側流路35の内壁面101が傾斜または湾曲しているため、外側流路35から出た空気の流れには、軸方向の成分だけでなく、円周方向の成分(旋回成分)も残る。
FIG. 14 is a side view of the inner cylinder 7 according to the second embodiment of the present invention as viewed from above. The downstream side wall surface 65 (left wall surface) of one end opening of the outer flow path 35 is higher than the upstream side wall surface 66 (right wall surface), and is opened by a difference dH of this height. As a result, the flow outside the cylindrical portion can be smoothly changed in the axial direction along the downstream side wall surface 65, and the dust contained in the swirl flow can easily flow into the dust container 5. The inner wall surface 101 of the outer channel 35 is inclined or curved in the circumferential direction from the downstream side wall surface 65 that is the inlet of the outer channel 35 toward the other axial end surface of the inner cylinder 7 that is the outlet of the outer channel 35. Formed. Thereby, dust can flow smoothly in the outer flow path 35. In addition, since the inner wall surface 101 of the outer flow path 35 is inclined or curved, not only the axial component but also the circumferential component (swirl component) is included in the air flow that exits the outer flow path 35. Remains.
図15は、本発明の実施例2の内筒7を右側から見た側面図である。外延部34は、外側流路35へ向かって(下側から上側へ向かって)、軸方向の高さが低くなっている。外延部34の表面は、1周分では、外側流路35へ向かってらせん状に形成される。円柱部分57の高さをH1、円錐台部分58の最も高い位置での高さをH2とすると、H1>H2の関係を有する。また、案内管38の最も高い位置での高さをH3とすると、H3>H1の関係を有する。貫通孔33は、少なくとも案内管終端部59から外側流路35の一端開口までの間に形成されていればよいが、その中でも、外側流路35側よりも案内管終端部59側に集中して形成されていればよい。外側流路35側では、貫通孔33に流れ込む流量よりも外側流路35に流れ込む流量が多くなるため、外側流路35側に貫通孔33を形成する意味がないためである。
FIG. 15 is a side view of the inner cylinder 7 according to the second embodiment of the present invention as viewed from the right side. The outward extension 34 has a lower axial height toward the outer flow path 35 (from the lower side to the upper side). The surface of the extended portion 34 is formed in a spiral shape toward the outer flow path 35 in one round. When the height of the cylindrical portion 57 is H1, and the height of the truncated cone portion 58 at the highest position is H2, the relationship is H1> H2. Further, assuming that the height of the guide tube 38 at the highest position is H3, there is a relationship of H3> H1. The through-hole 33 may be formed at least between the guide tube end portion 59 and one end opening of the outer flow path 35, but among them, the through hole 33 is more concentrated on the guide tube end portion 59 side than the outer flow path 35 side. As long as it is formed. This is because the flow rate flowing into the outer flow channel 35 is larger than the flow rate flowing into the through-hole 33 on the outer flow channel 35 side, and there is no point in forming the through-hole 33 on the outer flow channel 35 side.
図16は、本発明の実施例2の内筒7を右側から見た断面図である。凹み部8の軸方向で最も深い部分での深さをH4とすると、H4<H1の関係を有する。つまり、凹み部8の深さは、円柱部分57の高さよりも浅い。立体的に見ると、凹み部8は半球状であり、凹み部8の断面形状は、図14に示すようにほぼ半円である。よって、凹み部8の深さH4は、円柱部分57の外形半径R1あるいは凹み部8の開口部の半径にほぼ等しい。よって、凹み部8の軸方向の形成位置は、貫通孔33の軸方向の形成位置にオーバーラップする。凹み部8の深さH4が深すぎると、貫通孔33から吸い込まれる空気の流量が少なくなり、一方、凹み部8の深さH4が浅すぎると、凹み部8に塵埃がつまる恐れがあるからである。射出成形の容易さも考慮して、凹み部8は半球状とするのが好ましい。ただし、凹み部8は半球状に限定されるのではなく、半球状よりも浅い楕円形状あるいは深い楕円形状であってもよい。そして、案内管38の底面の一端は、凹み部8の底面に段差なくなだらかに接合され、案内管38の底面の他端は、外延部34の表面に段差なくなだらかに接合され、案内管38の底面は、案内管38の底面の一端から案内管38の底面の他端に至るまで段差なくなだらかに傾斜するのが好ましい。尚、半球状の凹み部8の半分から案内管38が連結されるので、案内管38の部分を除くと実際には凹み部8は1/4球状となる。
FIG. 16 is a cross-sectional view of the inner cylinder 7 according to the second embodiment of the present invention as viewed from the right side. When the depth at the deepest portion in the axial direction of the recessed portion 8 is H4, the relationship is H4 <H1. That is, the depth of the recessed portion 8 is shallower than the height of the cylindrical portion 57. When viewed three-dimensionally, the recess 8 is hemispherical, and the cross-sectional shape of the recess 8 is substantially a semicircle as shown in FIG. Therefore, the depth H4 of the recessed portion 8 is substantially equal to the outer radius R1 of the cylindrical portion 57 or the radius of the opening of the recessed portion 8. Therefore, the formation position of the recess 8 in the axial direction overlaps the formation position of the through hole 33 in the axial direction. If the depth H4 of the dent portion 8 is too deep, the flow rate of air sucked from the through-hole 33 is reduced. On the other hand, if the depth H4 of the dent portion 8 is too shallow, dust may be trapped in the dent portion 8. It is. Considering the ease of injection molding, the recess 8 is preferably hemispherical. However, the recessed portion 8 is not limited to a hemispherical shape, and may be an elliptical shape shallower or deeper than the hemispherical shape. One end of the bottom surface of the guide tube 38 is gently joined to the bottom surface of the recessed portion 8 without a step, and the other end of the bottom surface of the guide tube 38 is gently joined to the surface of the extended portion 34 without a step. The bottom surface of the guide tube 38 preferably slopes smoothly from one end of the bottom surface of the guide tube 38 to the other end of the bottom surface of the guide tube 38. Since the guide tube 38 is connected from the half of the hemispherical recess 8, the recess 8 is actually a 1/4 spherical shape except for the guide tube 38.
そして、円筒部分の外側を旋回した空気は、外側流路35から排出される(流れ62)。貫通孔33から円筒部分の内側に流れ込んだ空気は、円筒部分内の空間および外延部34内の空間を、小さく旋回しながら、内側流路36から排出される(流れ63)。貫通孔33から円筒部分の内側に流れ込んだ空気は、円筒部分の外側を旋回した空気に比較して、エネルギー損失がかなり大きくなるが、塵埃収容部5に塵埃が堆積していない状態において、貫通孔33から円筒部分の内側に流れ込んだ空気の流量は、円筒部分の外側を旋回した空気の流量に比較してかなり少ないため、全体として見るとエネルギー損失は少ない。
Then, the air swirling outside the cylindrical portion is discharged from the outer flow path 35 (flow 62). The air that has flowed into the inside of the cylindrical portion from the through hole 33 is discharged from the inner flow path 36 while making a small turn in the space in the cylindrical portion and the space in the extended portion 34 (flow 63). The air flowing into the inside of the cylindrical portion from the through-hole 33 has a considerable energy loss as compared with the air swirling outside the cylindrical portion, but in a state where no dust is accumulated in the dust container 5 Since the flow rate of air flowing into the inside of the cylindrical portion from the hole 33 is considerably smaller than the flow rate of air swirling outside the cylindrical portion, energy loss is small as a whole.
図17(a)は、本発明の実施例2の塵埃分離部を正面から見た斜視図であり、図17(a)は、本発明の実施例2の塵埃分離部を右側側面から見た側面図である。図17中の矢印は、円柱部分57の軸方向先端部と入口管3の出口端部との当接範囲を示す。円柱部分57の半円形状の軸方向先端部が、入口管3の出口端部と当接している。組立精度の問題から、円柱部分57の軸方向先端部と入口管3の出口端部とは完全に当接せずに、多少の間隙(1mm以下)があってもよい。ただし、間隙があると空気が漏れ、エネルギー損失
が増加し、また騒音も大きくなる。よって、円柱部分57の軸方向先端部と入口管3の出口端部とを気密にする場合は、円柱部分57の軸方向先端部と入口管3の出口端部との間にパッキング(シール部材)を介在させてもよい。
FIG. 17 (a) is a perspective view of the dust separator of Example 2 of the present invention as viewed from the front, and FIG. 17 (a) is the dust separator of Example 2 of the present invention as viewed from the right side. It is a side view. An arrow in FIG. 17 indicates a contact range between the axial tip portion of the cylindrical portion 57 and the outlet end portion of the inlet pipe 3. The semicircular axial tip of the cylindrical portion 57 is in contact with the outlet end of the inlet pipe 3. Due to the problem of assembly accuracy, the axial front end portion of the cylindrical portion 57 and the outlet end portion of the inlet pipe 3 may not be completely in contact with each other, and there may be a slight gap (1 mm or less). However, if there is a gap, air leaks, energy loss increases, and noise increases. Therefore, when the axial tip of the cylindrical portion 57 and the outlet end of the inlet tube 3 are hermetically sealed, packing (seal member) is provided between the axial tip of the cylindrical portion 57 and the outlet end of the inlet tube 3. ) May be interposed.
一方、断面拡大図に示すように、外筒7の軸方向端面の内側に、案内管38の軸方向先端部の全長にわたって、案内管38の軸方向先端部に沿って段差を形成する。外筒7の軸方向端面の厚さをD2とし、外筒7の軸方向端面の案内管38の軸方向先端部に対応する部分よりも内周側の厚さをD3とすると、D2>D3の関係を有することから、(D3−D2)の段差が生じる。例えば、D2は3mm程度であり、D3は2mm程度である。よって、段差は、1mm程度である。よって、外筒7の軸方向端面の内側は、案内管38の軸方向先端部に対応する部分よりも内周側で薄くなる。そして、断面拡大図に示すように、この段差に案内管38の軸方向先端部が当接するように内筒6および外筒7を組み合わせる。この段差は、外筒7の軸方向端面の内側と案内管38の軸方向先端部との間のシール機能を有するため、この段差によって、空気のエネルギー損失を低減し、または騒音を低減できる。加工精度や組立精度が悪かったり、電動送風機が28が稼動して、内筒7が塵埃収容部5側に吸い寄せられて、案内管38の軸方向先端部が、外筒6の軸方向端面の内側に完全に当接しない場合にも、段差が空気の漏れを抑制できる。案内管38の軸方向先端部の厚さは、円柱部分57の軸方向先端部の厚さD1に比較して、薄く、パッキングなどのシール部材を形成するのが困難なため、段差によってシール機能を実現するのが好ましい。尚、入口管3は、外筒6と一体に成形されるのが好ましい。
On the other hand, as shown in the enlarged sectional view, a step is formed along the axial front end of the guide tube 38 over the entire length of the axial front end of the guide tube 38 inside the axial end surface of the outer cylinder 7. If the thickness of the axial end face of the outer cylinder 7 is D2, and the thickness of the inner peripheral side of the axial end face of the outer cylinder 7 corresponding to the axial tip of the guide tube 38 is D3, then D2> D3. Therefore, the step (D3-D2) is generated. For example, D2 is about 3 mm, and D3 is about 2 mm. Therefore, the step is about 1 mm. Therefore, the inner side of the axial end surface of the outer cylinder 7 is thinner on the inner peripheral side than the portion corresponding to the distal end portion of the guide tube 38 in the axial direction. Then, as shown in the enlarged cross-sectional view, the inner cylinder 6 and the outer cylinder 7 are combined so that the tip end portion in the axial direction of the guide tube 38 abuts on the step. Since this step has a sealing function between the inner side of the axial end surface of the outer cylinder 7 and the tip end portion of the guide tube 38 in the axial direction, this step can reduce energy loss of air or noise. The processing accuracy and assembly accuracy are poor, the electric blower 28 is operated, the inner cylinder 7 is sucked to the dust container 5 side, and the axial tip of the guide tube 38 is located on the axial end surface of the outer cylinder 6. Even in the case where it does not completely contact the inside, the step can suppress air leakage. Since the thickness of the axial tip portion of the guide tube 38 is smaller than the thickness D1 of the cylindrical tip portion 57 in the axial direction, it is difficult to form a sealing member such as a packing. Is preferably realized. The inlet pipe 3 is preferably formed integrally with the outer cylinder 6.
外筒7の内周面(側壁面)で、かつ、外筒7の軸方向端面(上面)に近い側で、かつ、案内管38の出口開口から外側流路35の入口開口に至るまでの間に、整流板102(リブ、羽根)を形成する。整流板102の形成位置は、案内管38の出口開口から外側流路35の入口開口に至るまでの間の中央付近でもよいし、中央よりも案内管38の出口開口側であってもよい。整流板102は板形状で、円周方向に延びて形成される。整流板102は円周方向の長さは、案内管38の出口開口から外側流路35の入口開口に至るまで距離よりも極めて小さい。図17(b)に示すように、整流板102の形成方向は、整流板102の形成位置から外側流路35の入口開口に向かう方向である。整流板102は1枚であってもよいし、複数枚であってもよい。整流板102と外延部34との間には大きな隙間があり、この大きな隙間には当然に空気が流れる。整流板102と外筒7の軸方向端面の内側との間にも小さい隙間があり、この大きな隙間にも空気が流れる。この整流板102と外筒7の軸方向端面の内側との間にも小さい隙間を形成し、空気の流れを形成することによって、整流板102の両面に流れが発生するため、整流板102の下流端での乱流の発生を抑制できる。そして、この整流板102によって、旋回流を外側流路35の入口開口へ向かわせることができる。よって、案内管38から流れ込んだ空気が、外筒7内を何周も旋回することなく、外側流路35へ導かれるため、空気のエネルギー損失を低減できる。また、流速の遅い内周側(内筒7の外周面)ではなく、流速の早い外周側(外筒6の内周面)に形成するため、整流板102の形状が小さくても、旋回流を転向させる効果がある。整流板102を小さくできるため、空気の流れの乱れを小さくでき、空気のエネルギー損失を低減できる。
On the inner peripheral surface (side wall surface) of the outer cylinder 7 and on the side close to the axial end surface (upper surface) of the outer cylinder 7 and from the outlet opening of the guide tube 38 to the inlet opening of the outer flow path 35. In the meantime, the current plate 102 (ribs, blades) is formed. The formation position of the rectifying plate 102 may be near the center between the outlet opening of the guide tube 38 and the inlet opening of the outer flow path 35, or may be closer to the outlet opening side of the guide tube 38 than the center. The rectifying plate 102 has a plate shape and is formed to extend in the circumferential direction. The length of the current plate 102 in the circumferential direction is extremely smaller than the distance from the outlet opening of the guide tube 38 to the inlet opening of the outer flow path 35. As shown in FIG. 17B, the direction in which the rectifying plate 102 is formed is the direction from the position where the rectifying plate 102 is formed toward the inlet opening of the outer flow path 35. There may be one current plate 102 or a plurality of current plates. There is a large gap between the current plate 102 and the extended portion 34, and air naturally flows through this large gap. There is also a small gap between the rectifying plate 102 and the inside of the axial end surface of the outer cylinder 7, and air flows through this large gap. Since a small gap is formed between the current plate 102 and the inner side of the axial end surface of the outer cylinder 7 to form an air flow, a flow is generated on both surfaces of the current plate 102. Generation of turbulent flow at the downstream end can be suppressed. The rectifying plate 102 can direct the swirl flow toward the inlet opening of the outer flow path 35. Therefore, the air flowing in from the guide tube 38 is guided to the outer flow path 35 without rotating in the outer cylinder 7 many times, so that energy loss of air can be reduced. Further, since it is formed not on the inner peripheral side (the outer peripheral surface of the inner cylinder 7) with a slow flow velocity but on the outer peripheral side (the inner peripheral surface of the outer cylinder 6) with a higher flow velocity, even if the shape of the rectifying plate 102 is small, the swirl flow Has the effect of turning. Since the current plate 102 can be made small, the turbulence of the air flow can be reduced, and the energy loss of the air can be reduced.
本発明の実施例2によれば、内筒7の先端部に凹み部8を形成して旋回機能を持たせることによって、集塵装置2の軸方向の長さを短くでき、掃除機本体1をコンパクトにできる。
According to the second embodiment of the present invention, the recess 8 is formed at the tip of the inner cylinder 7 to provide a turning function, whereby the axial length of the dust collector 2 can be shortened, and the cleaner body 1 Can be made compact.
実施例1の塵埃分離部4および塵埃収容部5の詳細を、実施例3として説明する。
Details of the dust separator 4 and the dust container 5 of the first embodiment will be described as a third embodiment.
本発明の実施例3の電気掃除機は、第2の集塵部(例えば、塵埃収容部5)が、第1の集塵部(例えば、塵埃分離部4)側の軸方向一端部に、第2の集塵部の着脱方向に沿った面を有する第1の部材(例えば、突起部材70)を備え、第1の集塵部が、第2の集塵部側の軸方向他端部の第1の部材に対応する位置に、第1の部材の第2の集塵部の着脱方向に沿った面に対向する面を有する第2の部材(例えば、凹み部39)を備えることを特徴とする。そして、本発明によれば、使用者が第2の集塵部を掃除機本体1に装着する際に、第1の部材と第2の部材とにより第2の集塵部の挿入をガイドできるため、使用者にとって、第2の集塵部の装着が容易となり、また、第1の集塵部および掃除機本体1に対する第2の集塵部の位置ずれも抑制できるため、第1の集塵部と第2の集塵部との間あるいは第2の集塵部と掃除機本体1との間の気密を保持でき、電気掃除機の吸込仕事率の低下を抑制できる。さらに、空気漏れによる騒音の発生も抑制できる。
In the vacuum cleaner according to the third embodiment of the present invention, the second dust collecting unit (for example, the dust container 5) is disposed at one axial end of the first dust collecting unit (for example, the dust separating unit 4). A first member having a surface along the attaching / detaching direction of the second dust collecting portion (for example, the protruding member 70) is provided, and the first dust collecting portion is the other end in the axial direction on the second dust collecting portion side. A second member having a surface facing the surface along the attaching / detaching direction of the second dust collecting portion of the first member (for example, the recessed portion 39) is provided at a position corresponding to the first member. Features. And according to this invention, when a user equips the vacuum cleaner main body 1 with a 2nd dust collection part, insertion of a 2nd dust collection part can be guided with a 1st member and a 2nd member. Therefore, it becomes easy for the user to attach the second dust collecting part, and the first dust collecting part and the position of the second dust collecting part with respect to the cleaner body 1 can be suppressed. The airtightness between the dust part and the second dust collection part or between the second dust collection part and the cleaner body 1 can be maintained, and the reduction in the suction work rate of the vacuum cleaner can be suppressed. Furthermore, the generation of noise due to air leakage can be suppressed.
または、本発明の電気掃除機は、第2の集塵部(例えば、塵埃収容部5)が、第1の集塵部(例えば、塵埃分離部4)側の軸方向一端部に、掃除機本体1の底面に対して略垂直な面を有する第1の部材(例えば、突起部材70)を備え、第1の集塵部が、第2の集塵部側の軸方向他端部の第1の部材に対応する位置に、第1の部材の略垂直な面に対向する面を有する第2の部材(例えば、凹み部39)を備えることを特徴とする。そして、本発明によれば、使用者が第2の集塵部を掃除機本体1に装着する際に、第1の部材と第2の部材とにより第2の集塵部の挿入をガイドできるため、使用者にとって、第2の集塵部の装着が容易となり、また、第1の集塵部および掃除機本体1に対する第2の集塵部の位置ずれも抑制できるため、第1の集塵部と第2の集塵部との間あるいは第2の集塵部と掃除機本体1との間の気密を保持でき、電気掃除機の吸込仕事率の低下を抑制できる。さらに、空気漏れによる騒音の発生も抑制できる。
Alternatively, in the electric vacuum cleaner of the present invention, the second dust collector (for example, the dust container 5) is disposed at one end in the axial direction on the first dust collector (for example, the dust separator 4) side. A first member having a surface substantially perpendicular to the bottom surface of the main body 1 (for example, the protruding member 70) is provided, and the first dust collecting portion is the second axial end of the second dust collecting portion. A second member (for example, a recessed portion 39) having a surface facing a substantially vertical surface of the first member is provided at a position corresponding to the first member. And according to this invention, when a user equips the vacuum cleaner main body 1 with a 2nd dust collection part, insertion of a 2nd dust collection part can be guided with a 1st member and a 2nd member. Therefore, it becomes easy for the user to attach the second dust collecting part, and the first dust collecting part and the position of the second dust collecting part with respect to the cleaner body 1 can be suppressed. The airtightness between the dust part and the second dust collection part or between the second dust collection part and the cleaner body 1 can be maintained, and the reduction in the suction work rate of the vacuum cleaner can be suppressed. Furthermore, the generation of noise due to air leakage can be suppressed.
また、本発明の電気掃除機は、第1の集塵部(例えば、塵埃分離部4)と第2の集塵部(例えば、塵埃収容部5)とが連通する部分に介在する第1のシール部材(例えば、パッキング9)と、第2の集塵部と掃除機本体1とが連通する部分に介在する第2のシール部材(例えば、パッキング25)とを備え、第1のシール部材が、第2のシール部材に比較して、弾性力の大きい材料で構成することを特徴とする。そして、本発明によれば、第2の集塵部と掃除機本体1との間に比較して離間し易い第1の集塵部と第2の集塵部との間の気密を保持でき、電気掃除機の吸込仕事率の低下を抑制できる。さらに、空気漏れによる騒音の発生も抑制できる。
Moreover, the vacuum cleaner of the present invention includes a first dust collection unit (for example, a dust separation unit 4) and a second dust collection unit (for example, a dust storage unit 5) that are interposed in a portion that communicates with each other. A seal member (for example, packing 9), and a second seal member (for example, packing 25) interposed in a portion where the second dust collecting unit and the cleaner body 1 communicate with each other. It is characterized in that it is made of a material having a larger elastic force than that of the second seal member. And according to this invention, airtightness between the 1st dust collection part and 2nd dust collection part which are easy to separate compared with between the 2nd dust collection part and the cleaner body 1 can be maintained. The reduction in the suction work rate of the vacuum cleaner can be suppressed. Furthermore, the generation of noise due to air leakage can be suppressed.
また、本発明の電気掃除機は、第1の集塵部(例えば、塵埃分離部4)と第2の集塵部(例えば、塵埃収容部5)とが連通する部分に介在する第1のシール部材(例えば、パッキング9)と、第2の集塵部と掃除機本体1とが連通する部分に介在する第2のシール部材(例えば、パッキング25)とを備え、第2の集塵部が、第1のシール部材と第2のシール部材とによって、第1の集塵部が装着された掃除機本体1に支持されることを特徴とする。そして、本発明によれば、使用者が第2の集塵部を掃除機本体1から容易に取り外すことができ、塵埃の排出操作が容易となる。さらに、本発明によれば、第1の集塵部と第2の集塵部との間および第2の集塵部と掃除機本体1との間の気密を保持でき、電気掃除機の吸込仕事率の低下を抑制できる。さらに、空気漏れによる騒音の発生も抑制できる。
Moreover, the vacuum cleaner of the present invention includes a first dust collection unit (for example, a dust separation unit 4) and a second dust collection unit (for example, a dust storage unit 5) that are interposed in a portion that communicates with each other. A second dust collecting part, comprising: a sealing member (for example, packing 9); and a second sealing member (for example, packing 25) interposed in a portion where the second dust collecting part and the cleaner body 1 communicate with each other. However, the first seal member and the second seal member are supported by the cleaner body 1 to which the first dust collecting part is attached. And according to this invention, a user can remove a 2nd dust collection part from the cleaner body 1 easily, and the discharge operation of dust becomes easy. Furthermore, according to the present invention, it is possible to maintain airtightness between the first dust collecting unit and the second dust collecting unit and between the second dust collecting unit and the cleaner main body 1, and suction of the vacuum cleaner Reduction of work rate can be suppressed. Furthermore, the generation of noise due to air leakage can be suppressed.
また、本発明の電気掃除機は、集塵装置2の軸方向一端部から集塵装置2の軸方向一端面に対向する掃除機本体1の壁面部(例えば、前側壁面)にかけて、集塵装置2が本体吸気口から離隔するのを規制する部材(例えば、突起部材72および係合穴82)を備えることを特徴とする。そして、本発明によれば、掃除機本体1と塵埃分離部4との間の気密を保持でき、電気掃除機の吸込仕事率の低下を抑制できる。さらに、空気漏れによる騒音の発生も抑制できる。
Moreover, the vacuum cleaner of this invention covers the wall surface part (for example, front side wall surface) of the vacuum cleaner main body 1 which opposes the axial direction one end surface of the dust collector 2 from the axial direction one end part of the dust collector 2. 2 is provided with a member (for example, a protruding member 72 and an engagement hole 82) that regulates the separation of the 2 from the main body inlet. And according to this invention, the airtightness between the vacuum cleaner main body 1 and the dust separation part 4 can be hold | maintained, and the fall of the suction work rate of a vacuum cleaner can be suppressed. Furthermore, the generation of noise due to air leakage can be suppressed.
また、本発明の電気掃除機は、集塵装置2の軸方向一端部と集塵装置2の軸方向一端面に対向する掃除機本体1の壁面部(例えば、前側壁面)とを係合する部材(例えば、突起部材72および係合穴82)を備えることを特徴とする。そして、本発明によれば、掃除機本体1と塵埃分離部4との間の気密を保持でき、電気掃除機の吸込仕事率の低下を抑制できる。さらに、空気漏れによる騒音の発生も抑制できる。
Moreover, the vacuum cleaner of this invention engages the wall surface part (for example, front side wall surface) of the vacuum cleaner main body 1 which opposes the axial direction one end part of the dust collector 2 and the axial direction one end surface of the dust collector 2. As shown in FIG. A member (for example, a protruding member 72 and an engagement hole 82) is provided. And according to this invention, the airtightness between the vacuum cleaner main body 1 and the dust separation part 4 can be hold | maintained, and the fall of the suction work rate of a vacuum cleaner can be suppressed. Furthermore, the generation of noise due to air leakage can be suppressed.
図18は、本発明の実施例3の掃除機本体1を右側から見た側面図である。図19は、本発明の実施例3の掃除機本体1を右上側から見た斜視図である。特に、使用者が、上カバー56を開いて、掃除機本体1に塵埃分離部4を残し塵埃収容部5のみを略上方向へ引っ張り出した状態を示す。点線矢印は、塵埃収容部5の引っ張り方向を示す。点線矢印の方向は、掃除機本体1の底面または掃除機本体1が置かれた面(例えば、床面)に対して垂直方向または垂直方向よりもやや前側方向(例えば、5度)である。
FIG. 18: is the side view which looked at the cleaner body 1 of Example 3 of this invention from the right side. FIG. 19 is a perspective view of the cleaner body 1 according to the third embodiment of the present invention as viewed from the upper right side. In particular, a state is shown in which the user opens the upper cover 56 and leaves the dust separating portion 4 in the cleaner body 1 and pulls out only the dust accommodating portion 5 substantially upward. A dotted arrow indicates a pulling direction of the dust container 5. The direction of the dotted line arrow is perpendicular to the bottom surface of the cleaner body 1 or the surface (for example, the floor surface) on which the cleaner body 1 is placed (for example, 5 degrees).
塵埃分離部4に一体に形成された入口管3の軸方向一端がパッキング22に当接し、塵埃分離部4の軸方向他端の下部が、係合部材71(固定部材)によって掃除機本体1に係合され、固定される。塵埃分離部4の軸方向他端の下部と係合部材71とによって係合機構が実現される。よって、使用者が係合部材71を操作しない限り、塵埃分離部4は、掃除機本体1に固定されている。一方、塵埃収容部5が掃除機本体1に装着された状態では、塵埃収容部5の軸方向一端が、パッキング9を介して塵埃分離部4の軸方向他端に当接し、塵埃収容部5の軸方向他端が、パッキング25を介して掃除機本体1に当接し、塵埃収容部5の上面が上カバー56によって覆われており、塵埃収容部5の他の部分は、塵埃分離部4や掃除機本体1に当接していない。つまり、塵埃収容部5は、その軸方向一端および他端で、塵埃分離部4や掃除機本体1に浮いた状態で上方向に支持される。よって、使用者は、上カバー56を開いて、把手16を持って塵埃収容部5を点線矢印方向へ引っ張れば、塵埃分離部4を掃除機本体1に残したまま、塵埃収容部5のみを掃除機本体1から取り外すことができる。つまり、塵埃収容部5を塵埃分離部4とは独立して掃除機本体1から取り外すことができる。よって、使用者にとって、塵埃収容部5の取り外しが容易である。塵埃の大部分は、塵埃収容部5に堆積、圧縮されるので、使用者は、集塵装置2を掃除機本体1から取り外してさらに塵埃分離部4と塵埃収容部5を分離して塵埃収容部5内の塵埃を排出するという3段階の操作をしなくても、塵埃分離部4を掃除機本体1に残したまま塵埃収容部5のみを掃除機本体1から取り外して塵埃収容部5内の塵埃を排出するという2段階の操作で済むため、使用者にとって、塵埃の排出操作が容易となる。尚、把手16は、塵埃収容部5の後端から前側にかけてなだらかに傾斜しているため、使用者は、塵埃収容部5を垂直方向または垂直方向よりもやや前側方向に引っ張り出せる。さらに、塵埃収容部5がパッキング9およびパッキング25のみによって塵埃分離部4および掃除機本体1に支持され、塵埃収容部5の他の部分が掃除機本体1から浮いた状態であることから、電動送風機28が作動して吸引力が発生すると、その吸引力によって塵埃収容部5が塵埃分離部4側および掃除機本体1の後側壁面側へパッキング9およびパッキング25を押し付ける方向へ変位できるため、塵埃分離部4と塵埃収容部5との間の気密、および塵埃収容部5と掃除機本体1との間の気密を保持できる。
One end in the axial direction of the inlet pipe 3 formed integrally with the dust separation part 4 abuts on the packing 22, and the lower part of the other end in the axial direction of the dust separation part 4 is connected to the cleaner main body 1 by the engaging member 71 (fixing member). Is engaged and fixed. An engagement mechanism is realized by the lower portion of the other end in the axial direction of the dust separator 4 and the engagement member 71. Therefore, as long as the user does not operate the engaging member 71, the dust separation unit 4 is fixed to the cleaner body 1. On the other hand, in a state in which the dust container 5 is attached to the cleaner body 1, one axial end of the dust container 5 abuts against the other axial end of the dust separator 4 via the packing 9, and the dust container 5 The other end in the axial direction abuts against the cleaner body 1 via the packing 25, the upper surface of the dust container 5 is covered by the upper cover 56, and the other part of the dust container 5 is the dust separator 4. Or the vacuum cleaner body 1 is not in contact. That is, the dust container 5 is supported upward in a state where it floats on the dust separator 4 and the cleaner body 1 at one end and the other end in the axial direction. Therefore, if the user opens the upper cover 56 and holds the handle 16 and pulls the dust container 5 in the direction of the dotted arrow, only the dust container 5 remains with the dust separator 4 left in the cleaner body 1. It can be removed from the cleaner body 1. That is, the dust container 5 can be detached from the cleaner body 1 independently of the dust separator 4. Therefore, it is easy for the user to remove the dust container 5. Since most of the dust is accumulated and compressed in the dust container 5, the user removes the dust collector 2 from the cleaner body 1 and further separates the dust separator 4 and the dust container 5 to store the dust. Even if the three-stage operation of discharging the dust in the unit 5 is not performed, only the dust container 5 is removed from the cleaner body 1 while the dust separator 4 is left in the cleaner body 1, and the dust container 5 Therefore, it is easy for the user to discharge the dust. In addition, since the handle 16 is gently inclined from the rear end to the front side of the dust container 5, the user can pull out the dust container 5 in the vertical direction or slightly in the front direction from the vertical direction. Furthermore, since the dust container 5 is supported by the dust separator 4 and the cleaner body 1 only by the packing 9 and the packing 25 and the other parts of the dust container 5 are lifted from the cleaner body 1, When the air blower 28 is activated to generate a suction force, the dust storage portion 5 can be displaced by the suction force in a direction in which the packing 9 and the packing 25 are pressed against the dust separation portion 4 side and the rear wall surface side of the cleaner body 1. The airtightness between the dust separator 4 and the dust container 5 and the airtightness between the dust container 5 and the cleaner body 1 can be maintained.
塵埃収容部5の軸方向一端の軸心付近には、塵埃収容部5の着脱をガイドまたは補助するための突起部材70が形成される。突起部材70は、塵埃収容部5の軸方向一端面から軸方向へ突出して形成される。突起部材70は、前蓋11と同一材料で、前蓋11と一体に形成されるのが好ましいが、一体に形成されなくてもよい。突起部材70の前端面は、略引っ張り方向つまり掃除機本体1の底面または掃除機本体1が置かれた面に対して略垂直方向または垂直方向よりも、やや前側方向(例えば、0〜5度の範囲内の所定の角度)に形成される。突起部材70と塵埃分離部4の凹み部39によってガイド機構が実現される。特に、使用者は、塵埃収容部5を掃除機本体1に装着する際に、まず塵埃収容部5の把手16を持って、突起部材70の前端面を塵埃分離部4の凹み部39の前側壁面に当接し、その後塵埃収容部5を押し込み、通常の力で押し込めなくなったら、上カバー56を閉じれば、塵埃収容部5を掃除機本体1に装着できる。よって、使用者にとって、塵埃収容部5の装着も容易である。尚、塵埃収容部5が所定の位置まで押し込まれない場合には、上カバー56が閉じないように、上カバー56の内側形状(塵埃収容部5に当接する面の形状)を形成してもよい。
In the vicinity of the axial center of one end of the dust container 5 in the axial direction, a protruding member 70 for guiding or assisting the attachment / detachment of the dust container 5 is formed. The protruding member 70 is formed so as to protrude in the axial direction from one axial end surface of the dust container 5. The protruding member 70 is preferably made of the same material as the front lid 11 and formed integrally with the front lid 11, but may not be formed integrally. The front end surface of the projecting member 70 has a substantially front direction (for example, 0 to 5 degrees) with respect to a substantially pulling direction, that is, a substantially vertical direction or a vertical direction with respect to the bottom surface of the cleaner body 1 or the surface on which the cleaner body 1 is placed. At a predetermined angle within a range of A guide mechanism is realized by the protruding member 70 and the recessed portion 39 of the dust separating portion 4. In particular, when the user attaches the dust container 5 to the vacuum cleaner body 1, the user first holds the handle 16 of the dust container 5, and the front end surface of the protruding member 70 is located on the front side of the recess 39 of the dust separator 4. When it comes into contact with the wall surface, and then the dust container 5 is pushed in and cannot be pushed in with a normal force, the dust container 5 can be attached to the cleaner body 1 by closing the upper cover 56. Therefore, it is easy for the user to install the dust container 5. Even when the dust container 5 is not pushed to a predetermined position, the inner shape of the upper cover 56 (the shape of the surface in contact with the dust container 5) may be formed so that the upper cover 56 does not close. Good.
図20は、本発明の実施例3の掃除機本体1を右側から見た側面図である。図21は、本発明の実施例3の掃除機本体1を右上側から見た斜視図である。特に、掃除機本体1から塵埃収容部5を取り外した後に、塵埃分離部4を略上方向へ引っ張り出した状態を示す。点線矢印は、塵埃分離部4の引っ張り方向を示す。点線矢印の方向は、掃除機本体1の底面または掃除機本体1が置かれた面に対して略垂直方向である。
FIG. 20 is a side view of the cleaner body 1 according to the third embodiment of the present invention as viewed from the right side. FIG. 21: is the perspective view which looked at the cleaner body 1 of Example 3 of this invention from the upper right side. In particular, after the dust container 5 is removed from the cleaner body 1, the dust separator 4 is pulled out substantially upward. The dotted line arrow indicates the pulling direction of the dust separator 4. The direction of the dotted line arrow is substantially perpendicular to the bottom surface of the cleaner body 1 or the surface on which the cleaner body 1 is placed.
係合部材71は、板形状をしており、その後側が軸によって掃除機本体1に支持されている。さらに、係合部材71の前側を掃除機本体1側に向かって付勢するように、軸の周りにまたは係合部材71自体にばねが取り付けられている。塵埃分離部4が装着された状態では、塵埃分離部4の軸方向他端の下部が係合部材71の前側に係合し、バネの付勢力によって塵埃分離部4が外れないように固定される。塵埃分離部4は、入口管3や塵埃分離部4の軸方向他端の下部以外に、塵埃分離部4の底面が掃除機本体1に支持されてもよい。
The engaging member 71 has a plate shape, and the rear side thereof is supported by the cleaner body 1 by a shaft. Further, a spring is attached around the shaft or on the engagement member 71 itself so as to urge the front side of the engagement member 71 toward the cleaner body 1 side. When the dust separation part 4 is mounted, the lower part of the other end in the axial direction of the dust separation part 4 engages with the front side of the engaging member 71 and is fixed so that the dust separation part 4 is not detached by the biasing force of the spring. The In the dust separator 4, the bottom surface of the dust separator 4 may be supported by the cleaner body 1 other than the lower part of the other end in the axial direction of the inlet pipe 3 and the dust separator 4.
そして、使用者は、一方の手で、バネの付勢力に逆らって、係合部材71による係合を解除し、他方の手で、凹み部39の内側または外側を持って、塵埃分離部4を点線矢印方向へ引っ張れば、塵埃分離部4を掃除機本体1から取り外すことができる。よって、使用者は、塵埃分離部4を掃除機本体1から容易に取り外すことができる。塵埃分離部4を掃除機本体1に装着する際には、使用者は、凹み部39の内側または外側を持って、まず入口管3の一端をパッキング22に当接し、その後塵埃分離部4を押し込むことによって、係合部材71の前側が塵埃分離部4の軸方向一端の下部を乗り越えて係合が達成され、塵埃分離部4を掃除機本体1に装着できる。よって、使用者は、塵埃分離部4を掃除機本体1に容易に装着できる。尚、塵埃収容部5の軸方向他端面は、塵埃収容部5の軸方向他端に対向する掃除機本体1の後側壁面(電動送風機28の前方壁面)にほぼ前面にわたって形成されるが、掃除機本体1の前側から見ると、吸気ダクト27の入口開口(補助フィルタ26)は、左側に寄って形成される。また、掃除機本体1の後側壁面は、掃除機本体1の底面または掃除機本体1が置かれた面に対して略垂直方向に形成される。
Then, the user releases the engagement by the engagement member 71 against the biasing force of the spring with one hand, and holds the inside or the outside of the recessed portion 39 with the other hand, and the dust separation unit 4. Can be removed from the cleaner body 1 by pulling in the direction of the dotted arrow. Therefore, the user can easily remove the dust separator 4 from the cleaner body 1. When attaching the dust separator 4 to the vacuum cleaner main body 1, the user first holds the inner side or the outer side of the recess 39 and abuts one end of the inlet pipe 3 against the packing 22, and then removes the dust separator 4. By pushing, the front side of the engaging member 71 gets over the lower part of one end in the axial direction of the dust separating portion 4 to achieve engagement, and the dust separating portion 4 can be attached to the cleaner body 1. Therefore, the user can easily attach the dust separator 4 to the cleaner body 1. The other axial end surface of the dust container 5 is formed on the rear side wall surface (the front wall surface of the electric blower 28) of the cleaner body 1 facing the other axial end of the dust container 5 over almost the front surface. When viewed from the front side of the cleaner body 1, the inlet opening (auxiliary filter 26) of the intake duct 27 is formed toward the left side. The rear side wall surface of the cleaner body 1 is formed in a substantially vertical direction with respect to the bottom surface of the cleaner body 1 or the surface on which the cleaner body 1 is placed.
さらに、塵埃分離部4の軸方向一端面の外側の入口管3よりも上側には、塵埃分離部4の軸方向先端側を掃除機本体1の前側の内壁に引っ掛けるための突起部材72(係合部材)が形成される。電動送風機28が作動すると吸引力が発生し、その吸引力によって塵埃収容部5が後側へ変位しようとし、さらに、その吸引力によって塵埃分離部4も集塵装置2の軸方向で塵埃収容部5側に変位し、その結果として塵埃分離部4が掃除機本体1から浮き上がろうとする。つまり、塵埃分離部4の軸方向他端は、係合部材71に係合されているので、塵埃分離部4の軸方向他端の変位は規制される。一方、塵埃分離部4の軸方向一端は、入口管3の軸方向一端がパッキング22に当接しているだけではその変位が規制されないため、パッキング22からずれたり離間してしまい、気密を保持できず、吸引力の低下を招いたり、騒音を発生する。そこで、突起部材72によって、入口管3の軸方向一端がパッキング22からずれたり離間するのを防止し、吸引力の低下や騒音の発生を抑制する。
Further, above the inlet pipe 3 outside the one end surface in the axial direction of the dust separator 4, a protruding member 72 (engagement member) for hooking the tip end in the axial direction of the dust separator 4 on the inner wall on the front side of the cleaner body 1. Joint member) is formed. When the electric blower 28 is actuated, a suction force is generated, and the dust storage portion 5 tends to be displaced rearward by the suction force, and the dust separation portion 4 is also moved in the axial direction of the dust collector 2 by the suction force. As a result, the dust separation unit 4 is lifted from the cleaner body 1. That is, since the other axial end of the dust separator 4 is engaged with the engaging member 71, the displacement of the other axial end of the dust separator 4 is restricted. On the other hand, since the displacement of the one end in the axial direction of the dust separator 4 is not restricted just by the one end in the axial direction of the inlet pipe 3 being in contact with the packing 22, it is displaced or separated from the packing 22, and airtightness can be maintained. Therefore, the suction force is reduced and noise is generated. Therefore, the protruding member 72 prevents the one end in the axial direction of the inlet pipe 3 from being displaced or separated from the packing 22 and suppresses a reduction in suction force and generation of noise.
図22は、本発明の実施例3の集塵装置2を右側から見た側面図である。特に、塵埃分離部4と塵埃収容部5とが分離された状態を示す。
FIG. 22 is a side view of the dust collector 2 according to the third embodiment of the present invention viewed from the right side. In particular, a state in which the dust separator 4 and the dust container 5 are separated is shown.
塵埃収容部5の軸方向他端には、フィルタ15が設けられている。フィルタ15は、断面形状が略四角形の枠体78内にフィルタ部材79が形成される。フィルタ15の外周の全周にわたって、略四角形状のパッキング25が形成される。よって、パッキング25は、フィルタ15と共にケース10に対して回動可能である。パッキング25は、前後方向に伸縮するようひだ折りであるのが好ましい。そして、図22のように側面から見ると、パッキング25は、フィルタ15よりもケース10側に配置される。つまり、フィルタ15は、パッキング25よりも外側(電動送風機28側)に出ている。図22のように側面から見たときのフィルタ15の後端面の形成方向は、掃除機本体1の底面または掃除機本体1が置かれた面に対して略垂直であり、掃除機本体1の後側壁面に沿った方向(例えば、平行)である。一方、図22のように側面から見たときのパッキング25の後端面の形成方向は、掃除機本体1の底面または掃除機本体1が置かれた面に対する垂線に対して角度b傾斜している。つまり、パッキング25の後端面の形成方向は、塵埃収容部5の引っ張り方向に対しても略角度b傾斜している。よって、パッキング25の後端面は、フィルタ15の後端面に対しても角度b傾斜している。パッキング25の後端面の上端の位置に対して、パッキング25の後端面の下端の位置が、前側(ケース10側)にある。図22のように側面から見たときに、パッキング25の後端面の上端の位置は、フィルタ15の後端面の上端の位置に略一致するが、パッキング25の後端面の下端の位置は、フィルタ15の後端面の下端の位置よりも前側にある。例えば、角度bは、5度〜10度の範囲内の所定の角度である。そして、掃除機本体1の後側壁面は、フィルタ15に対向する壁面よりもパッキング25に対向する壁面のほうが、前側に形成される。さらに、フィルタ15の位置に対してパッキング25の位置よりも、掃除機本体1のフィルタ15に対向する壁面の位置に対するパッキング25に対向する壁面の位置の方が、前側にあるのが好ましい。これによって、使用者が塵埃収容部5を押し込んだ際に、フィルタ15が掃除機本体1に当接する以前に、パッキング25を掃除機本体1に当接することになる。
A filter 15 is provided at the other axial end of the dust container 5. In the filter 15, a filter member 79 is formed in a frame body 78 having a substantially rectangular cross section. A substantially rectangular packing 25 is formed over the entire circumference of the filter 15. Therefore, the packing 25 can rotate with respect to the case 10 together with the filter 15. The packing 25 is preferably fold-folded so as to expand and contract in the front-rear direction. When viewed from the side as shown in FIG. 22, the packing 25 is disposed closer to the case 10 than the filter 15. That is, the filter 15 protrudes outside the packing 25 (on the electric blower 28 side). The formation direction of the rear end surface of the filter 15 when viewed from the side as shown in FIG. 22 is substantially perpendicular to the bottom surface of the cleaner body 1 or the surface on which the cleaner body 1 is placed. The direction along the rear side wall surface (for example, parallel). On the other hand, the formation direction of the rear end surface of the packing 25 when viewed from the side as shown in FIG. 22 is inclined by an angle b with respect to a normal to the bottom surface of the cleaner body 1 or the surface on which the cleaner body 1 is placed. . In other words, the formation direction of the rear end surface of the packing 25 is inclined at an angle b with respect to the pulling direction of the dust container 5. Therefore, the rear end surface of the packing 25 is also inclined by the angle b with respect to the rear end surface of the filter 15. The position of the lower end of the rear end surface of the packing 25 is on the front side (case 10 side) with respect to the position of the upper end of the rear end surface of the packing 25. When viewed from the side as shown in FIG. 22, the position of the upper end of the rear end surface of the packing 25 substantially coincides with the position of the upper end of the rear end surface of the filter 15. 15 is in front of the lower end position of the rear end face. For example, the angle b is a predetermined angle within a range of 5 degrees to 10 degrees. The rear wall surface of the cleaner body 1 is formed on the front side of the wall surface facing the packing 25 rather than the wall surface facing the filter 15. Further, it is preferable that the position of the wall surface facing the packing 25 with respect to the position of the wall surface facing the filter 15 of the cleaner body 1 is on the front side relative to the position of the packing 25 with respect to the position of the filter 15. Accordingly, when the user pushes in the dust container 5, the packing 25 comes into contact with the cleaner body 1 before the filter 15 comes into contact with the cleaner body 1.
塵埃分離部4と塵埃収容部5との間に介在するパッキング9よりも、塵埃収容部5と掃除機本体1との間に介在するパッキング25の方が、粘性が低い材料で構成されるのが好ましい。これは、パッキング9の形成方向に比較して、パッキング25の形成方向が、塵埃収容部5の引っ張り方向、つまり掃除機本体1の底面または掃除機本体1が置かれた面に対して略垂直な方向に近いため、掃除機本体1から塵埃収容部5を着脱する際に大きなせん断力を受ける。パッキング25の粘性が高いと、掃除機本体1から塵埃収容部5を着脱する際にパッキング25がパッキング受け面80にひっついてしまい、着脱に大きな力を要する。そこで、パッキング9よりもパッキング25の粘性を低くすることによって、掃除機本体1から塵埃収容部5の着脱が容易になる。パッキング9よりもパッキング25の粘性を低くするために、パッキング9よりもパッキング25を弾性力の小さい材料で構成する。換言すると、パッキング25よりもパッキング9を弾性力の大きい材料で構成することになる。塵埃分離部4は掃除機本体1にほぼ固定された状態であるのに対して、塵埃収容部5は掃除機本体1から浮いた状態であり、さらに、パッキング25の位置よりもパッキング9の位置のほうが電動送風機28から流路上遠いため、塵埃収容部5と掃除機本体1との間に比較して塵埃分離部4と塵埃収容部5との間の方が離間し易くなる。パッキング25よりもパッキング9の弾性力の大きくして、塵埃分離部4と塵埃収容部5との間が離間するのをパッキング9の弾性変形で許容することによって、離間し易い塵埃分離部4と塵埃収容部5との間の気密を保持できるという他の効果も得られる。
The packing 25 interposed between the dust container 5 and the cleaner body 1 is made of a material having a lower viscosity than the packing 9 interposed between the dust separator 4 and the dust container 5. Is preferred. This is because the direction in which the packing 25 is formed is substantially perpendicular to the direction in which the dust container 5 is pulled, that is, the bottom surface of the cleaner body 1 or the surface on which the cleaner body 1 is placed. Therefore, when the dust container 5 is attached to or detached from the cleaner body 1, it receives a large shearing force. If the viscosity of the packing 25 is high, the packing 25 gets stuck to the packing receiving surface 80 when attaching / detaching the dust container 5 to / from the cleaner body 1, and a large force is required for attaching / detaching. Accordingly, by making the viscosity of the packing 25 lower than that of the packing 9, the dust container 5 can be easily attached and detached from the cleaner body 1. In order to lower the viscosity of the packing 25 than the packing 9, the packing 25 is made of a material having a smaller elastic force than the packing 9. In other words, the packing 9 is made of a material having a larger elastic force than the packing 25. The dust separator 4 is in a state of being substantially fixed to the cleaner body 1, whereas the dust container 5 is in a state of floating from the cleaner body 1, and further, the position of the packing 9 is higher than the position of the packing 25. Since this is far from the electric blower 28 on the flow path, the dust separation part 4 and the dust container 5 are more easily separated from each other than the dust container 5 and the cleaner body 1. By allowing the elastic force of the packing 9 to be larger than that of the packing 25 and allowing the dust separating unit 4 and the dust container 5 to be separated by elastic deformation of the packing 9, Another effect that airtightness with the dust container 5 can be maintained is also obtained.
図22のように側面から見たときの突起部材70の前端面の形成方向は、掃除機本体1の底面または掃除機本体1が置かれた面に対する垂線に対して角度c傾斜している。塵埃収容部5の引っ張り方向に対しても略角度c傾斜している。突起部材70の前端面の上端の位置に対して、突起部材70の前端面の下端の位置が、後側(ケース10側)にある。
例えば、角度cは、0〜5度の範囲内の所定の角度である。よって、角度c≦角度bの関係を有する。角度bを大きくしたときは、角度cを小さくしてもよいし、逆に、角度bを小さくしたときは、角度cを大きくしてもよい。例えば、角度bを10度とすると、角度cを0にしてもよい。つまり、パッキング25の後端面が十分に傾斜しているのであれば、突起部材70の前端面は傾斜していなくてもよい。角度bを5度とし、角度cも5度としてもよい。尚、突起部材70の前端面は凹み部39の前側壁面に対向しているが、突起部材70の前端面を受ける凹み部39の前側壁面の形成方向は、掃除機本体1の底面または掃除機本体1が置かれた面に対して略垂直であってもよい。このように、突起部材70の前端面とパッキング25の後端面とを逆「ハ」の字形状とすることにより、使用者にとって、掃除機本体1に対する塵埃収容部5の着脱が容易になる。特に、突起部材70の形成角度cに対して接触面積が大きく、粘性の高いパッキング25の形成角度bを大きくすることによって、塵埃収容部5の着脱が容易になる。
The formation direction of the front end surface of the protrusion member 70 when viewed from the side as shown in FIG. 22 is inclined at an angle c with respect to the normal to the bottom surface of the cleaner body 1 or the surface on which the cleaner body 1 is placed. It is also inclined substantially at angle c with respect to the pulling direction of the dust container 5. The position of the lower end of the front end surface of the projection member 70 is on the rear side (case 10 side) with respect to the position of the upper end of the front end surface of the projection member 70.
For example, the angle c is a predetermined angle within a range of 0 to 5 degrees. Therefore, the relationship of angle c ≦ angle b is established. When the angle b is increased, the angle c may be decreased. Conversely, when the angle b is decreased, the angle c may be increased. For example, if the angle b is 10 degrees, the angle c may be zero. That is, if the rear end surface of the packing 25 is sufficiently inclined, the front end surface of the protruding member 70 may not be inclined. The angle b may be 5 degrees, and the angle c may be 5 degrees. The front end surface of the protruding member 70 faces the front side wall surface of the recessed portion 39, but the front wall surface of the recessed portion 39 that receives the front end surface of the protruding member 70 is formed in the direction of the bottom surface of the cleaner body 1 or the cleaner. It may be substantially perpendicular to the surface on which the main body 1 is placed. In this way, by making the front end surface of the projecting member 70 and the rear end surface of the packing 25 into an inverted “C” shape, the user can easily attach and detach the dust container 5 to and from the cleaner body 1. In particular, the contact area is large with respect to the formation angle c of the protruding member 70, and the formation angle b of the highly viscous packing 25 is increased, whereby the dust container 5 can be easily attached and detached.
さらに、フィルタ15の枠体78の下部には、フィルタ15の後端面に対して突出した凸部73を有する。凸部73は、フィルタ15の後端面に対して略垂直な方向に突出している。一方、掃除機本体1の後側壁面のうちフィルタ15の枠体78に対向する位置の下部、すなわちフィルタ15の凸部73に対向する位置に、凹部81が形成される(図26参照)。この凸部73と凹部81とは対応する形状を有する。よって、凹部81は、掃除機本体1の後側壁面に対して略垂直な方向に凹んでいる。そして、この凸部73と凹部81とにより、塵埃収容部5が掃除機本体1に装着されたときに、掃除機本体1の底面または掃除機本体1が置かれた面に対して垂直な方向への塵埃収容部5の変位を規制する機構を実現する。そして、塵埃収容部5を掃除機本体1に装着する際に、フィルタ15の凸部73が掃除機本体1の壁面の凹部81に嵌め合わされる以前に、突起部材70の前端面の下端が凹み部39の前側壁面に当接するように、突起部材70の位置および前端面の長さを決めるのが好ましい。これにより、使用者は、塵埃収容部5を掃除機本体1に装着する際に、まず突起部材70を凹み部39に当接し、その後塵埃収容部5を押し込むと、フィルタ15の凸部73が掃除機本体1の壁面の凹部81に嵌め込まれて、塵埃収容部5が掃除機本体1に装着された状態となる。よって、使用者にとって、塵埃収容部5を掃除機本体1にスムーズに装着することができ、また、塵埃収容部5が掃除機本体1に装着できたという感覚も得られる。また、フィルタ15の凸部73および掃除機本体1の壁面の凹部81を有することによって、塵埃収容部5が掃除機本体1に装着されたときに、掃除機本体1の底面または掃除機本体1が置かれた面に対して垂直な方向へ塵埃収容部5が変位するのを防止することができ、塵埃収容部5と塵埃分離部4および掃除機本体1との気密を保持できる。
Further, the lower portion of the frame body 78 of the filter 15 has a convex portion 73 protruding from the rear end surface of the filter 15. The convex portion 73 projects in a direction substantially perpendicular to the rear end surface of the filter 15. On the other hand, a recess 81 is formed in a lower part of the rear wall surface of the cleaner body 1 at a position facing the frame 78 of the filter 15, that is, at a position facing the protrusion 73 of the filter 15 (see FIG. 26). The convex portion 73 and the concave portion 81 have corresponding shapes. Therefore, the recess 81 is recessed in a direction substantially perpendicular to the rear side wall surface of the cleaner body 1. And by this convex part 73 and the recessed part 81, when the dust accommodating part 5 is mounted | worn with the cleaner body 1, the direction perpendicular | vertical with respect to the bottom face of the cleaner body 1 or the surface where the cleaner body 1 was placed A mechanism for restricting the displacement of the dust container 5 is realized. And when attaching the dust accommodating part 5 to the cleaner main body 1, before the convex part 73 of the filter 15 is fitted by the recessed part 81 of the wall surface of the cleaner main body 1, the lower end of the front end surface of the protrusion member 70 is dented. It is preferable to determine the position of the protruding member 70 and the length of the front end surface so as to contact the front side wall surface of the portion 39. Thus, when the user attaches the dust container 5 to the cleaner body 1, first, the projection member 70 is brought into contact with the recess 39, and then the dust container 5 is pushed in, so that the protrusion 73 of the filter 15 is formed. The dust container 5 is fitted into the recess 81 on the wall surface of the cleaner body 1, and the dust container 5 is attached to the cleaner body 1. Therefore, it is possible for the user to smoothly attach the dust container 5 to the cleaner body 1 and to obtain a feeling that the dust container 5 can be attached to the cleaner body 1. Further, by having the convex portion 73 of the filter 15 and the concave portion 81 of the wall surface of the cleaner body 1, the bottom surface of the cleaner body 1 or the cleaner body 1 when the dust container 5 is attached to the cleaner body 1. The dust container 5 can be prevented from being displaced in a direction perpendicular to the surface on which the dust is placed, and the dust container 5, the dust separator 4 and the vacuum cleaner body 1 can be kept airtight.
さらに、図22のように側面から見たときの入口管3の入口開口の形成方向は、掃除機本体1の底面または掃除機本体1が置かれた面に対する垂線に対して角度d傾斜している。塵埃分離部4の引っ張り方向に対しても略角度d傾斜している。入口管3の入口開口の上端の位置に対して、入口管3の入口開口の下端の位置が、後側(塵埃分離部4側)にある。例えば、角度dは、5度〜10度の範囲内の所定の角度である。塵埃分離部4と一体に形成された入口管3の前端である入口開口を角度d傾斜したことにより、掃除機本体1からの塵埃分離部4の着脱が容易となる。
Furthermore, the direction of formation of the inlet opening of the inlet pipe 3 when viewed from the side as shown in FIG. 22 is inclined at an angle d with respect to the normal to the bottom surface of the cleaner body 1 or the surface on which the cleaner body 1 is placed. Yes. It is also inclined substantially at an angle d with respect to the pulling direction of the dust separator 4. The position of the lower end of the inlet opening of the inlet pipe 3 is on the rear side (dust separation unit 4 side) with respect to the position of the upper end of the inlet opening of the inlet pipe 3. For example, the angle d is a predetermined angle within a range of 5 degrees to 10 degrees. Since the inlet opening which is the front end of the inlet pipe 3 formed integrally with the dust separator 4 is inclined at an angle d, the dust separator 4 can be easily attached to and detached from the cleaner body 1.
図23は、本発明の実施例3の集塵装置2を右側から見た断面図である。特に、塵埃分離部4と塵埃収容部5とが当接した状態を示す。集塵装置2の軸心は、入口管3の軸心かつ外筒6の軸心かつ内筒7の軸心かつ前蓋11の軸心である。軸心の形成方向(軸方向)に対して、塵埃分離部4の軸方向一端面および軸方向他端面、前蓋11の軸方向一端面および軸方向他端面、塵埃収容部5の一端面は、略垂直に形成される。
FIG. 23 is a cross-sectional view of the dust collector 2 according to the third embodiment of the present invention as viewed from the right side. In particular, a state in which the dust separator 4 and the dust container 5 are in contact with each other is shown. The axis of the dust collector 2 is the axis of the inlet pipe 3, the axis of the outer cylinder 6, the axis of the inner cylinder 7, and the axis of the front lid 11. With respect to the direction in which the shaft is formed (axial direction), one end surface in the axial direction and the other end surface in the axial direction of the dust separator 4, one end surface in the axial direction and the other end surface in the axial direction of the front lid 11, , Formed substantially vertically.
集塵装置2の軸心は、掃除機本体1の底面または掃除機本体1が置かれた面に対する垂線に対して、角度a傾斜している。例えば、角度aは、40度〜45度の範囲内の所定の角度である。ただし、角度aは、40度より小さくてもよい。よって、塵埃分離部4の軸方向一端面および軸方向他端面、前蓋11の軸方向一端面および軸方向他端面、塵埃収容部5の一端面は、掃除機本体1の底面または掃除機本体1が置かれた面に対して角度a傾斜していることになる。
The axis of the dust collector 2 is inclined at an angle a with respect to a normal to the bottom surface of the cleaner body 1 or the surface on which the cleaner body 1 is placed. For example, the angle a is a predetermined angle within a range of 40 degrees to 45 degrees. However, the angle a may be smaller than 40 degrees. Therefore, the one end surface in the axial direction and the other end surface in the axial direction of the dust separator 4, the one end surface in the axial direction and the other end surface in the axial direction of the front lid 11, and the one end surface of the dust container 5 are the bottom surface of the cleaner body 1 or the cleaner body. The angle 1 is inclined with respect to the surface on which 1 is placed.
図23のように側面から見ると、凹み部39は、前方から、掃除機本体1の底面または掃除機本体1が置かれた面に対して略垂直な前側壁面、塵埃分離部4の軸方向他端面に略平行な底面、塵埃分離部4の軸方向他端面に略垂直な後側壁面から構成される。塵埃収容部5が装着される際に、突起部材70の前端面が、凹み部39の前側壁面に当接する。突起部材70の前端面は凹み部39の前側壁面に対向するが、突起部材70の前端面は、掃除機本体1の底面または掃除機本体1が置かれた面に対して角度c傾斜しているので、凹み部39の前側壁面に対しても略角度c傾斜していることになる。電動送風機28の停止中は、突起部材70の前端面と凹み部39の前側壁面とが当接していてもよいし、当接せずに多少の間隙があってもよい。電動送風機28が作動して塵埃分離部4が塵埃収容部5に引き寄せられると、凹み部39の前側壁面が突起部材70の前端面に当接して、塵埃分離部4が塵埃収容部5へ変位するのを規制し、パッキング9がつぶれるのを抑制するのが好ましい。尚、突起部材70を前蓋11に形成し、凹み部39を内筒7に形成する代わりに、凹み部39を前蓋11に形成し、突起部材70を内筒7に形成してもよい。
When viewed from the side as shown in FIG. 23, the recess 39 is, from the front, the front wall surface substantially perpendicular to the bottom surface of the cleaner body 1 or the surface on which the cleaner body 1 is placed, and the axial direction of the dust separator 4. The bottom surface is substantially parallel to the other end surface, and the rear side wall surface is substantially perpendicular to the other axial end surface of the dust separator 4. When the dust container 5 is mounted, the front end surface of the projection member 70 comes into contact with the front side wall surface of the recess 39. The front end surface of the projection member 70 faces the front side wall surface of the recess 39, but the front end surface of the projection member 70 is inclined at an angle c with respect to the bottom surface of the cleaner body 1 or the surface on which the cleaner body 1 is placed. Therefore, the angle c is also inclined with respect to the front side wall surface of the recess 39. While the electric blower 28 is stopped, the front end surface of the projecting member 70 and the front side wall surface of the recessed portion 39 may be in contact with each other, or some gap may be provided without contact. When the electric blower 28 is actuated and the dust separator 4 is drawn to the dust container 5, the front wall surface of the recess 39 abuts against the front end surface of the protruding member 70, and the dust separator 4 is displaced to the dust container 5. It is preferable to prevent the packing 9 from being crushed. Instead of forming the protruding member 70 on the front lid 11 and forming the recessed portion 39 on the inner cylinder 7, the recessed portion 39 may be formed on the front lid 11 and the protruding member 70 may be formed on the inner cylinder 7. .
図24は、本発明の実施例3の塵埃収容部5を前側から見た正面図である。前蓋11の上左側には、圧縮された塵埃の堆積量を目視できる透明または半透明の窓74が形成される。窓74には、ごみ捨てラインが描かれており、ごみ捨て時期を使用者に知らせることができる。前蓋11の軸方向一端面(前面)の下側の特に外延部34の裏側の下部に張り出したネジボス(ネジ67が形成される突起)に対応した位置には、外延部34の裏側の下部に張り出したネジボス(ネジ67が形成される突起)を受けるためのボス受け75が形成される。塵埃分離部4と塵埃収容部5が当接した際に、外延部34のネジボスが前蓋11のボス受け75内に挿入されることにより、塵埃分離部4と塵埃収容部5とが相対的に変位するのを規制することができる。外延部34のネジボスと前蓋11のボス受け75により、規制機構が実現される。
FIG. 24 is a front view of the dust container 5 according to the third embodiment of the present invention as viewed from the front side. On the upper left side of the front lid 11, a transparent or translucent window 74 is formed through which the accumulated amount of compressed dust can be visually observed. A garbage disposal line is drawn on the window 74, so that the user can be notified of the timing of garbage disposal. A lower part on the back side of the outer extension part 34 is located at a position corresponding to a screw boss (protrusion on which the screw 67 is formed) projecting on the lower side on the lower side of the front end 11 in the axial direction (front face), particularly on the back side of the extension part 34. A boss receiver 75 for receiving a screw boss (projection on which the screw 67 is formed) projecting over is formed. When the dust separator 4 and the dust container 5 come into contact with each other, the screw bosses of the outer extension 34 are inserted into the boss receiver 75 of the front lid 11 so that the dust separator 4 and the dust container 5 are relative to each other. It is possible to regulate the displacement. A regulating mechanism is realized by the screw boss of the outer extension 34 and the boss receiver 75 of the front lid 11.
前蓋11の軸方向一端面の最外周部、つまり外延部34の裏側のリップ68に対応する位置には、外延部34の裏側のリップ68を受けるためのパッキング受け面76が形成される。パッキング受け面76は、少なくともリップ68よりも幅広な円環状部を含み、リップ68を受け易いようにその円環状部は平面で形成されるのが好ましい。前蓋11の軸方向一端面の内周側、つまり外延部34の裏側のリップ69に対応する位置には、外延部34の裏側のリップ69を受けるためのパッキング受け面77が形成される。パッキング受け面77も、少なくともリップ69よりも幅広な円環状部を含み、リップ69を受け易いようにその円環状部は平面で形成される。リップ68とパッキング受け面76とによって、外側のシール機構(シール部材)が実現され、リップ69とパッキング受け面77とによって、内側のシール機構(シール部材)が実現される。そして、突起部材70は、パッキング受け面77のさらに内周側の上側に形成される。これは、外延部34の裏側で内筒7の内周側に形成される凹み部39の位置に対応させるためである。また、突起部材70は、左右方向に並列な2つの突起部材70から構成される。このように左右方向に幅を持たせることによって、突起部材70の前端面が凹み部39の前側壁面に当接したときに安定性が増す。ただし、突起部材70は、1つの突起部材70で構成されてもよい。また、パッキング受け部77の外周でかつパッキング受け部76の内周に形成されてもよい。
A packing receiving surface 76 for receiving the lip 68 on the back side of the extended portion 34 is formed at the outermost peripheral portion of one end surface in the axial direction of the front lid 11, that is, on the position corresponding to the lip 68 on the back side of the extended portion 34. The packing receiving surface 76 preferably includes an annular portion that is wider than at least the lip 68, and the annular portion is preferably formed as a flat surface so that the lip 68 can be easily received. A packing receiving surface 77 for receiving the lip 69 on the back side of the extended portion 34 is formed at a position corresponding to the inner peripheral side of the one end surface in the axial direction of the front lid 11, that is, on the back side of the extended portion 34. The packing receiving surface 77 also includes an annular portion wider than at least the lip 69, and the annular portion is formed as a flat surface so that the lip 69 can be easily received. An outer seal mechanism (seal member) is realized by the lip 68 and the packing receiving surface 76, and an inner seal mechanism (seal member) is realized by the lip 69 and the packing receiving surface 77. The projecting member 70 is formed further on the inner peripheral side of the packing receiving surface 77. This is to correspond to the position of the recessed portion 39 formed on the inner peripheral side of the inner cylinder 7 on the back side of the outer extending portion 34. Further, the protruding member 70 includes two protruding members 70 arranged in parallel in the left-right direction. By providing a width in the left-right direction in this way, stability is increased when the front end surface of the projecting member 70 comes into contact with the front side wall surface of the recessed portion 39. However, the protruding member 70 may be configured by one protruding member 70. Further, it may be formed on the outer periphery of the packing receiving portion 77 and on the inner periphery of the packing receiving portion 76.
図25は、本発明の実施例3の塵埃収容部5を左後側から見た斜視図である。図26は、本発明の実施例3の塵埃収容部5を軸方向他端に対向する掃除機本体1の後側壁面(電動送風機の前方壁面)の前側から見た正面図である。フィルタ15は、断面形状が略四角形の枠体78内にフィルタ部材79が形成される。凸部73は、フィルタ15の枠体78の下部の左右の2箇所に形成される。凹部81は、掃除機本体1の後側壁面(電動送風機28の前方壁面)のうちフィルタ15の枠体78に対向する位置の下部の左右の2箇所に形成される。尚、フィルタ15に凸部73が形成され、掃除機本体1の後側壁面に凹部81が形成される代わりに、フィルタ15に凹部81が形成され、掃除機本体1の後側壁面に凸部73が形成されてもよい。
FIG. 25 is a perspective view of the dust container 5 according to the third embodiment of the present invention as viewed from the left rear side. FIG. 26: is the front view which looked at the dust accommodating part 5 of Example 3 of this invention from the front side of the rear side wall surface (front wall surface of an electric blower) of the cleaner body 1 facing the other axial end. In the filter 15, a filter member 79 is formed in a frame body 78 having a substantially rectangular cross section. The convex portions 73 are formed at two places on the left and right sides of the lower portion of the frame body 78 of the filter 15. The recesses 81 are formed at two locations on the left and right sides of the lower portion of the rear wall surface of the cleaner body 1 (the front wall surface of the electric blower 28) facing the frame body 78 of the filter 15. In addition, the convex part 73 is formed in the filter 15, and the recessed part 81 is formed in the filter 15 instead of forming the recessed part 81 in the rear side wall surface of the cleaner body 1, and the convex part is formed in the rear side wall surface of the cleaner body 1. 73 may be formed.
図26では、補助フィルタ26(吸気ダクト27の入口開口)は、掃除機本体1の後側壁面のうち左側に寄って形成される。掃除機本体1の後側壁面の上側には、除塵装置24を収納する収容部82が形成される。掃除機本体1の後側壁面の最外周部、つまりパッキング25の対応する位置には、パッキング25を受けるためのパッキング受け面80が形成される。パッキング受け面80は、少なくともパッキング25よりも幅広な略四角形状部を含み、パッキング25を受け易いようにその略四角形状部は平面で形成されるのが好ましい。パッキング受け面80は、補助フィルタ26や収容部82が形成される面よりも、掃除機本体1の前側に飛び出して形成される。側面から見たときのパッキング受け面80の形成方向は、パッキング25の後端面の形成方向に沿うように、掃除機本体1の底面または掃除機本体1が置かれた面に対する垂線に対して角度b傾斜している。よって、パッキング受け面80は、補助フィルタ26や収容部82が形成される面に対しても角度b傾斜している。パッキング受け面80の上端の位置に対して、パッキング受け面80の下端の位置が、前側(塵埃収容部5側)にある。パッキング25とパッキング受け面80とによって、シール機構(シール部材)が実現される。
In FIG. 26, the auxiliary filter 26 (the inlet opening of the intake duct 27) is formed on the left side of the rear side wall surface of the cleaner body 1. On the upper side of the rear side wall surface of the cleaner body 1, a housing portion 82 that houses the dust removing device 24 is formed. A packing receiving surface 80 for receiving the packing 25 is formed at the outermost peripheral portion of the rear side wall surface of the cleaner body 1, that is, at a position corresponding to the packing 25. The packing receiving surface 80 preferably includes at least a substantially rectangular portion wider than the packing 25, and the substantially rectangular portion is preferably formed as a flat surface so that the packing 25 can be easily received. The packing receiving surface 80 is formed to protrude to the front side of the cleaner body 1 from the surface on which the auxiliary filter 26 and the accommodating portion 82 are formed. The formation direction of the packing receiving surface 80 when viewed from the side is an angle with respect to the perpendicular to the bottom surface of the cleaner body 1 or the surface on which the cleaner body 1 is placed so as to follow the formation direction of the rear end surface of the packing 25. b Inclined. Therefore, the packing receiving surface 80 is also inclined at an angle b with respect to the surface on which the auxiliary filter 26 and the accommodating portion 82 are formed. The position of the lower end of the packing receiving surface 80 is on the front side (the dust container 5 side) with respect to the position of the upper end of the packing receiving surface 80. A seal mechanism (seal member) is realized by the packing 25 and the packing receiving surface 80.
図27は、本発明の実施例3の塵埃分離部4を前側から見たときの正面図である。突起部材72は、塵埃分離部4の軸方向一端面の外側の入口管3よりも上側に形成される。左右方向では、突起部材72は、塵埃分離部4の中央部に形成される。突起部材72は、左右方向に幅をもって形成される。ただし、突起部材72は、左右に方向に平行に配置された複数の突起部材72によって構成されてもよい。尚、図27中の点線は、外筒6の内面に形成された段差を示す。
FIG. 27 is a front view of the dust separator 4 according to the third embodiment of the present invention when viewed from the front side. The protruding member 72 is formed above the inlet pipe 3 outside the one end surface in the axial direction of the dust separating portion 4. In the left-right direction, the protruding member 72 is formed at the center of the dust separation unit 4. The protruding member 72 is formed with a width in the left-right direction. However, the projecting member 72 may be configured by a plurality of projecting members 72 arranged in parallel in the left-right direction. In addition, the dotted line in FIG. 27 shows the level | step difference formed in the inner surface of the outer cylinder 6. FIG.
図28は、本発明の実施例3の塵埃分離部4の側面図および掃除機本体1の前側の横断面図である。塵埃分離部4に形成される突起部材72は、塵埃分離部4の軸方向に延びて、つまり掃除機本体1の前側壁面に向かって延びて形成され、その先端部に凸部を有する。つまり、突起部材72は、爪形状あるいはL字形状を有する。一方、掃除機本体1の前側壁面の突起部材72に対応する位置には、突起部材72を受けるための係合穴82が形成される。突起部材72と係合穴82とによって係合機構(係合部材71)あるいは離間するのを規制する機構が実現される。使用者は、塵埃分離部4を掃除機本体1に装着する際に、まず突起部材72を係合穴82に挿入し、その後、入口管3の入口開口端を掃除機本体1に取り付けられたパッキング22に当接し、その後、塵埃分離部4の軸方向他端の下部を、係合部材71に押し当てればよい。電動送風機28が作動すると吸引力が発生し、塵埃分離部4が掃除機本体1から浮き上がろうとするが、突起部材72の先端部の凸部が、係合穴82の内側壁面に当接してひっかかり、塵埃分離部4の軸方向一端が掃除機本体1の前側壁面からずれたり離間するのを抑制する。よって、入口管3の軸方向一端がパッキング22からずれたり離間するのも防止し、吸引力の低下や騒音の発生を抑制する。
FIG. 28 is a side view of the dust separator 4 and a cross-sectional view of the front side of the cleaner body 1 according to the third embodiment of the present invention. The projecting member 72 formed on the dust separating portion 4 extends in the axial direction of the dust separating portion 4, that is, extends toward the front side wall surface of the cleaner body 1, and has a convex portion at the tip thereof. That is, the protruding member 72 has a claw shape or an L shape. On the other hand, an engagement hole 82 for receiving the protruding member 72 is formed at a position corresponding to the protruding member 72 on the front side wall surface of the cleaner body 1. An engagement mechanism (engagement member 71) or a mechanism that restricts separation is realized by the protruding member 72 and the engagement hole 82. When the user attaches the dust separator 4 to the cleaner body 1, the user first inserts the protruding member 72 into the engagement hole 82, and then attaches the inlet opening end of the inlet pipe 3 to the cleaner body 1. Then, the lower part of the other end in the axial direction of the dust separator 4 may be pressed against the engaging member 71 after coming into contact with the packing 22. When the electric blower 28 is activated, a suction force is generated, and the dust separating portion 4 tries to float up from the cleaner body 1, but the convex portion at the tip of the protruding member 72 abuts against the inner wall surface of the engagement hole 82. This prevents the one end in the axial direction of the dust separator 4 from shifting or separating from the front wall surface of the cleaner body 1. Therefore, it is possible to prevent the axial end of the inlet pipe 3 from being displaced from or separated from the packing 22, thereby suppressing a reduction in suction force and noise.
塵埃分離部4に突起部材72を形成し、掃除機本体1の前側壁面に係合穴82を形成する変わりに、掃除機本体1の前側壁面に突起部材72を形成し、塵埃分離部4に係合穴82を形成してもよい。突起部材72の形成位置は、塵埃分離部4の軸方向一端面でも上端に近い側であってもよいし、入口管3よりも下側であってもよい。また、突起部材72の代わりに、塵埃分離部4の軸方向先端の上端面を押さえつけるための押さえ部材を掃除機本体1の前側に形成してもよいし、入口管3の上端面を押さえつけるための押さえ部材を掃除機本体1の前側に形成してもよい。
Instead of forming the projection member 72 on the dust separator 4 and forming the engagement hole 82 on the front side wall surface of the cleaner body 1, the projection member 72 is formed on the front side wall surface of the cleaner body 1. The engagement hole 82 may be formed. The projecting member 72 may be formed on the axially one end surface of the dust separating portion 4 on the side close to the upper end or on the lower side of the inlet pipe 3. Further, instead of the projecting member 72, a pressing member for pressing the upper end surface of the tip end in the axial direction of the dust separator 4 may be formed on the front side of the cleaner body 1, or for pressing the upper end surface of the inlet pipe 3. The pressing member may be formed on the front side of the cleaner body 1.
実施例1の塵埃収容部5の詳細を、実施例4として説明する。
Details of the dust container 5 of the first embodiment will be described as a fourth embodiment.
本発明の実施例4の電気掃除機は、通気部材(例えば、集塵かご12)を、通気部材かケースに内包される第1の状態から通気部材の開口面と水平方向とのなす角度(例えば、角度e−角度f)が45度以内の所定の角度となる第2の状態に至るまでケースの前方方向に回動可能であることを特徴とする。または、本発明は、通気部材(例えば、集塵かご12)を、通気部材かケースに内包される第1の状態から通気部材の開口面と把手の形成方向とのなす角度(例えば、角度e−角度f−角度h)が45度以内の所定の角度となる第2の状態に至るまでケースの前方方向に回動可能であることを特徴とする。そして、本発明によれば、通気部材を、通気部材の開口面と水平方向とのなす角度が45度以内の所定の角度となる第2の状態に至るまでケースの前方方向に回動可能としたことにより、または、通気部材を、通気部材の開口面と把手の形成方向とのなす角度が45度以内の所定の角度となる第2の状態に至るまでケースの前方方向に回動可能としたことにより、使用者が通気部材内に堆積した塵埃を排出するのが容易となる。
In the vacuum cleaner of Example 4 of the present invention, the angle formed between the opening surface of the ventilation member and the horizontal direction from the first state in which the ventilation member (for example, the dust collecting basket 12) is included in the ventilation member or the case ( For example, it is possible to rotate in the forward direction of the case until reaching a second state in which the angle e−the angle f) is a predetermined angle within 45 degrees. Alternatively, according to the present invention, the angle (for example, the angle e) formed between the opening surface of the ventilation member and the handle forming direction from the first state in which the ventilation member (for example, the dust collecting basket 12) is enclosed in the ventilation member or the case. It is characterized in that it can be rotated in the forward direction of the case until it reaches a second state in which the angle f−the angle h) becomes a predetermined angle within 45 degrees. According to the present invention, the ventilation member can be rotated in the forward direction of the case until reaching a second state in which the angle between the opening surface of the ventilation member and the horizontal direction is a predetermined angle within 45 degrees. Or the ventilation member can be rotated in the forward direction of the case until the second state where the angle formed by the opening surface of the ventilation member and the direction in which the handle is formed is a predetermined angle within 45 degrees. As a result, the user can easily discharge the dust accumulated in the ventilation member.
または、本発明の実施例4の電気掃除機は、通気部材(例えば、集塵かご12)をケースに取り付けるための取付部材を、集塵部(例えば、塵埃収容部5)を側面から見たときに集塵部の後端面の形成方向または掃除機本体の底面に対する垂線に対して傾斜して、ケース内に固定したことを特徴とする。そして、本発明によれば、通気部材をケースに取り付けるための取付部材を、集塵部を側面から見たときに集塵部の後端面の形成方向または掃除機本体の底面に対する垂線に対して傾斜して形成したことにより、集塵部の前後方向を長くすることなく、集塵部をケースに取り付ける機構の強度を向上し、または、ケースがたわむのを抑制することができる。
Or the vacuum cleaner of Example 4 of this invention looked at the dust collection part (for example, dust storage part 5) from the side, the attachment member for attaching a ventilation member (for example, the dust collection basket 12) to a case. In some cases, the dust collector is fixed in the case so as to be inclined with respect to the direction in which the rear end face of the dust collecting part is formed or to the perpendicular to the bottom face of the cleaner body. And according to the present invention, the attachment member for attaching the ventilation member to the case is in a direction perpendicular to the direction of formation of the rear end face of the dust collector or the bottom surface of the cleaner body when the dust collector is viewed from the side. By forming it incline, the strength of the mechanism for attaching the dust collecting part to the case can be improved or the case can be prevented from bending without increasing the longitudinal direction of the dust collecting part.
図29は、本発明の実施例4の塵埃収容部を軸方向先端側から見た正面図である。特に、前蓋11を除いた状態を示す。図6と同様であるが、図6に対し図29は、集塵かご12内での空気の流れ62と、集塵かご12内での塵埃83の堆積状態を示す。
FIG. 29: is the front view which looked at the dust accommodating part of Example 4 of this invention from the axial direction front end side. In particular, a state in which the front lid 11 is removed is shown. 6 is the same as FIG. 6, but FIG. 29 shows the air flow 62 in the dust collection basket 12 and the accumulation state of the dust 83 in the dust collection basket 12.
図26に示す通り、吸気ダクト27の入口開口は、掃除機本体1の左右方向のうち左側に寄って形成される。また、図5(B)に示す通り、外側流路35の出口開口は、前蓋11の上下方向中心線よりも上側に形成され、左右方向で対称な形状を有する。また、図10に示す通り、内筒7の外周側を旋回した空気の流れ62は、円周方向(旋回方向)で外側流路35に流れ込み、下流側壁面65によって軸方向に転向される。しかし、下流側壁面65によって軸方向に転向されたとしても、空気の流れ62には円周方向(旋回方向)の成分が残っているため、空気の流れ62は、外側流路35の塵埃分離部4の軸方向他端部分(外側流路35の中間部分)、前蓋11の軸方向一端部分(外側流路35の中間部分)でも軸方向かつ円周方向を向き、前蓋11の軸方向他端部分(外側流路35の出口部分)でも軸方向かつ円周方向を向く。つまり、図29に示すように、空気の流れ62は、集塵かご12内の入口開口部でも、軸方向だけでなく半時計回りの円周方向にも向いている。よって、集塵かご12内での空気の流れ62は、フィルタ15へ直接吸い込まれるだけでなく、円周方向左向きに対向する集塵かご12の左側壁面に衝突し、さらに、集塵かご12の底面に衝突する。集塵かご12の底面に衝突した流れ62は、さらに、集塵かご12の右側壁面に衝突し、集塵かご12の入口開口つまり前蓋11の軸方向他端面へ向かって旋回した後に、集塵かご12内に流れ込んだ最初の流れ62と合流することとなる。よって、集塵かご12内に流れ込んだ空気には、集塵かご12内を手前、左、奥、右、手前の順に旋回する流れ62(塵埃収容部5を上から見ると、時計回り方向の旋回)が生じる。特に、集塵かご12にメッシュ部材が形成される場合には、空気の流れ62の衝突や旋回が顕著となる。ただし、集塵かご12の底面および上下左右の側壁面は通気可能なように開口しているため、集塵かご12の底面および上下左右の側壁面から集塵かご12外へ向かう流れも生じる。このとき、集塵かご12の底面と上側壁面と右側壁面とで形成される集塵かご12の右上部分は、流れ62の旋回力が強いため、空気に含まれる塵埃は、旋回流による遠心分離作用によって旋回流の外周側へ飛ばされ、集塵かご12の右上部分に堆積する。つまり、塵埃は、集塵かご12の右上部分から次第に堆積していく。よって、吸気ダクト27の入口開口が左側に寄って存在するにも関わらず、塵埃83が右側から堆積するため、集塵かご12内に塵埃83が堆積していったとしても、旋回流の発生が妨げられにくく、また吸気ダクト2の入口開口に対応する部分が塵埃83によって塞がれにくいため、塵埃83の堆積に伴う空気のエネルギー損失の発生が抑制され、塵埃83の堆積に伴う吸引力の低下を抑制することができる。尚、塵埃83が集塵かご12の右上部分から堆積していく場合にも、集塵かご12の底面および上下左右の側壁面から集塵かご12外へ向かう流れがあるため、集塵かご12の底面および上下左右の側壁面にも、多少の塵埃がへばりつくことになる。
As shown in FIG. 26, the inlet opening of the intake duct 27 is formed closer to the left side in the left-right direction of the cleaner body 1. 5B, the outlet opening of the outer flow path 35 is formed above the vertical center line of the front lid 11, and has a symmetrical shape in the left-right direction. Also, as shown in FIG. 10, the air flow 62 swirling on the outer peripheral side of the inner cylinder 7 flows into the outer flow path 35 in the circumferential direction (turning direction) and is turned in the axial direction by the downstream side wall surface 65. However, even if it is turned in the axial direction by the downstream side wall surface 65, since the circumferential component (swirl direction) remains in the air flow 62, the air flow 62 is separated from the dust in the outer flow path 35. The other end portion in the axial direction of the portion 4 (intermediate portion of the outer flow path 35) and the one end portion in the axial direction of the front lid 11 (intermediate portion of the outer flow path 35) also face in the axial direction and the circumferential direction. The other end portion in the direction (the exit portion of the outer flow path 35) also faces the axial direction and the circumferential direction. That is, as shown in FIG. 29, the air flow 62 is directed not only in the axial direction but also in the circumferential direction in the counterclockwise direction at the inlet opening in the dust collecting basket 12. Therefore, the air flow 62 in the dust collection basket 12 is not only directly sucked into the filter 15 but also collides with the left wall surface of the dust collection basket 12 facing leftward in the circumferential direction. Collides with the bottom. The flow 62 colliding with the bottom surface of the dust collecting basket 12 further collides with the right side wall surface of the dust collecting basket 12 and swivels toward the inlet opening of the dust collecting basket 12, that is, the other axial end surface of the front lid 11. The first flow 62 that has flowed into the dust basket 12 will join. Therefore, the air that has flowed into the dust collecting basket 12 flows in the order of the front, left, back, right, and front in the dust collecting basket 12 (when the dust container 5 is viewed from the top, the clockwise direction Swirl) occurs. In particular, when a mesh member is formed on the dust collecting basket 12, the collision or turning of the air flow 62 becomes significant. However, since the bottom surface of the dust collecting basket 12 and the upper, lower, left and right side wall surfaces are opened so as to allow ventilation, a flow from the bottom surface of the dust collecting cage 12 and the upper, lower, left and right side wall surfaces to the outside of the dust collecting cage 12 also occurs. At this time, the upper right portion of the dust collecting basket 12 formed by the bottom surface, the upper wall surface, and the right wall surface of the dust collecting basket 12 has a strong swirl force of the flow 62, so that the dust contained in the air is separated by the swirling flow. Due to the action, it is blown to the outer peripheral side of the swirling flow and accumulates in the upper right part of the dust collecting basket 12. That is, the dust gradually accumulates from the upper right part of the dust collecting basket 12. Therefore, even though the inlet opening of the intake duct 27 is located on the left side, the dust 83 accumulates from the right side. Therefore, even if the dust 83 accumulates in the dust collecting basket 12, the swirl flow is generated. Since the portion corresponding to the inlet opening of the intake duct 2 is not easily blocked by the dust 83, the generation of air energy loss due to the accumulation of the dust 83 is suppressed, and the suction force associated with the accumulation of the dust 83 is suppressed. Can be suppressed. Even when the dust 83 accumulates from the upper right part of the dust collecting basket 12, the dust collecting basket 12 flows from the bottom surface of the dust collecting basket 12 and the side walls of the upper, lower, left and right sides to the outside of the dust collecting basket 12. Some dust will also adhere to the bottom surface and the top, bottom, left and right side wall surfaces.
図30は、本発明の実施例4の塵埃収容部を側面から見た断面図である。特に、ケース10に対して前蓋11が閉まった状態を示す。外側流路35は、前蓋11の軸方向一端面を過ぎた前蓋11内の位置で、急に拡大する。さらに、外側流路35の前蓋11の軸方向他端面(外側流路35の出口開口)を過ぎた集塵かご12内の位置でも、急に拡大する。
よって、空気の流れ62は、前蓋11の軸方向一端面を過ぎた前蓋11内の位置で急に遅くなると共に拡散し、さらに、前蓋11の軸方向他端面(出口開口)を過ぎた集塵かご12内の位置でも急に遅くなると共に拡散する。
FIG. 30 is a cross-sectional view of the dust container of Example 4 of the present invention as viewed from the side. In particular, a state in which the front lid 11 is closed with respect to the case 10 is shown. The outer flow path 35 suddenly expands at a position in the front lid 11 past one axial end surface of the front lid 11. Furthermore, it expands suddenly even at a position in the dust collecting basket 12 past the other axial end surface of the front lid 11 of the outer channel 35 (exit opening of the outer channel 35).
Therefore, the air flow 62 suddenly slows and diffuses at a position in the front lid 11 past the one axial end surface of the front lid 11 and further passes the other axial end surface (exit opening) of the front lid 11. Even in the dust collecting basket 12, it suddenly becomes slow and diffuses.
また、集塵かごの底部84の上端と下端とは非対称とする。具体的には、集塵かごの底部84の上端つまり集塵かご13の底面と上側壁面との接合部分は、集塵かごの底部84の下端つまり集塵かご13の底面と下側壁面との接合部分に比較して、曲率半径を大きくして、なだらかに形成される。集塵かご12の軸方向は、フィルタ15の軸方向に対して角度a傾斜しているため、集塵かごの底部84の下端が、集塵かご13のうちで最もフィルタ15に近接する。前蓋11の軸方向一端面での外側流路35の開口の上下方向の中心点とフィルタ15の軸方向一端面(入口面)の上下方向の中心点とを結んだ直線(線分)上に、集塵かごの底部84の下端がほぼ位置する。そして、集塵かご12内に流れ込んだ空気の流れ62は、フィルタ15へ向かうことになるが、外側流路35の出口開口を出た位置で拡散し、一部は集塵かご12の上側壁面に沿って集塵かごの底部84へ向かい、他の一部は集塵かごの底部84に衝突して集塵かご12の下側壁面に沿って集塵かご12の入口開口へ向かって旋回する。集塵かご12の上側壁面は、フィルタ15に向かう流れ62の方向に沿って形成されているため、集塵かごの底部84へ向かって流れやすく、一方、集塵かご12の下側壁面は、フィルタ15に向かう流れ62の方向に対向して形成されているため、流れが停留しやすい。集塵かご12の上側壁面は、集塵かご12の下側壁面の上流側に位置し、また、旋回力が強いため、塵埃83は、集塵かご12のうち底部84の上端から堆積していく。尚、集塵かごの底部84の上端の外側には、ケース10の前側への集塵かご12の飛び出しを規制する突起部材87を備える。突起部材87は、集塵かご12の回動支点である軸14を中心とする円の半径方向に延びて形成されるのが好ましい。あるいは、突起部材87は、その半径方向に沿った面を有するのが好ましい。
Further, the upper end and the lower end of the bottom portion 84 of the dust collecting basket are asymmetric. Specifically, the upper end of the bottom portion 84 of the dust collection basket, that is, the joint portion between the bottom surface of the dust collection basket 13 and the upper wall surface is the bottom end of the bottom portion 84 of the dust collection basket, that is, the bottom surface of the dust collection basket 13 and the lower wall surface. Compared to the joint portion, the radius of curvature is increased, so that it is gently formed. Since the axial direction of the dust collecting basket 12 is inclined at an angle a with respect to the axial direction of the filter 15, the lower end of the bottom 84 of the dust collecting basket is closest to the filter 15 in the dust collecting basket 13. On a straight line (line segment) connecting the vertical center point of the opening of the outer flow path 35 on the axial end surface of the front lid 11 and the vertical center point of the axial end surface (entrance surface) of the filter 15. In addition, the lower end of the bottom portion 84 of the dust collecting basket is substantially located. Then, the air flow 62 flowing into the dust collecting basket 12 is directed to the filter 15, but diffuses at a position where it exits the outlet opening of the outer flow path 35, and a part thereof is the upper wall surface of the dust collecting basket 12. And the other part collides with the bottom 84 of the dust collecting car 12 and swivels along the lower wall surface of the dust collecting car 12 toward the entrance opening of the dust collecting car 12. . Since the upper wall surface of the dust collecting basket 12 is formed along the direction of the flow 62 toward the filter 15, it easily flows toward the bottom 84 of the dust collecting basket, while the lower wall surface of the dust collecting basket 12 is Since it is formed facing the direction of the flow 62 toward the filter 15, the flow is likely to stop. The upper wall surface of the dust collecting basket 12 is located upstream of the lower wall surface of the dust collecting basket 12 and has a strong turning force. Therefore, the dust 83 is accumulated from the upper end of the bottom 84 of the dust collecting basket 12. Go. A protruding member 87 is provided outside the upper end of the bottom portion 84 of the dust collecting basket to restrict the dust collecting basket 12 from jumping to the front side of the case 10. The protruding member 87 is preferably formed so as to extend in the radial direction of a circle centering on the shaft 14 that is the pivot point of the dust collecting basket 12. Alternatively, the protruding member 87 preferably has a surface along its radial direction.
図30の拡大図は、集塵かご12のケース10への支持構造を示す。図31は、本発明の実施例4の塵埃収容部5を後側から見た後面図である。特に、ケース10に対してフィルタ15を開いた状態を示す。図30の拡大図に示すように、集塵かご12は取付部材85によってケース10の内側に取り付けられる。これによって、ケース10の外観が損なわれるのを抑制できる。図31に示すように、取付部材85は略四角形状を有しており、前後方向および左右方向にある程度の幅を有する。取付部材85の左右方向の両端には、突起部86が形成される。突起部86をケース10の一部(ケース10の下面からケース10内に斜め方向に延びて形成される部分)に嵌め込むことによって取付部材85をケース10に固定する。そして、取付部材85の前側にて軸14を支持する。軸14に、集塵かご12を前蓋11側に押し出す方向に弾性力が作用するつるまきバネを備えてもよい。
そして、集塵かご12が前側へ飛び出す際には、取付部材85がケース10側に残り、軸14を支点として集塵かご12のみが前側へ変位する。ここで、取付部材85は、掃除機本体1の底面または掃除機本体1が置かれた面に平行な方向および掃除機本体1の底面または掃除機本体1が置かれた面に対して垂直な方向に対して、または塵埃収容部5またはケース10の軸方向他端面の形成方向に対して、斜め方向に形成する。取付部材85は、塵埃収容部5またはケース10の軸方向一端面の形成方向に対して、略垂直な方向に形成してもよい。塵埃収容部5およびケース19は、側面から見た形状が略逆三角形状または略扇形状であり、つまり上辺に比較して下辺が短い。このような塵埃収容部5において、特許文献3のように取付部材を水平方向に形成すると、塵埃収容部5の下辺が長くなってしまい、集塵装置2の軸方向の長さが長くなり、掃除機本体1の前後方向の長さも長くなってしまう。取付部材85自体を短くすると、取付部材85をケース10に固定するための強度が不足する。特に、軸14につるまきバネを形成した場合には、取付部材85につるまきバネの弾性力が反作用するため、取付部材85が撓んだり、損傷しやすくなる。また、集塵かご12が飛び出した状態でも、取付部材85に集塵かご12の荷重がかかるため、撓んだり、損傷しやすくなる。そこで、取付部材85を長くし(集塵かご12の軸方向長さの1/2以上)、かつ、塵埃収容部5の下辺を短くするために、取付部材85を掃除機本体1の底面または掃除機本体1が置かれた面に平行な方向および掃除機本体1の底面または掃除機本体1が置かれた面に対して垂直な方向に対して、または塵埃収容部5またはケース10の軸方向他端面の形成方向に対して、斜め方向に形成する。図31において、使用者は、取付部材85の「押す」と描かれた部分を押すことによって、ケース10から取付部材85と共に集塵かご12を取り外せる。
The enlarged view of FIG. 30 shows a structure for supporting the dust collecting basket 12 to the case 10. FIG. 31 is a rear view of the dust container 5 according to the fourth embodiment of the present invention as viewed from the rear side. In particular, a state in which the filter 15 is opened with respect to the case 10 is shown. As shown in the enlarged view of FIG. 30, the dust collecting basket 12 is attached to the inside of the case 10 by an attachment member 85. Thereby, it can suppress that the external appearance of case 10 is impaired. As shown in FIG. 31, the attachment member 85 has a substantially square shape, and has a certain width in the front-rear direction and the left-right direction. Protrusions 86 are formed at both ends of the mounting member 85 in the left-right direction. The mounting member 85 is fixed to the case 10 by fitting the protruding portion 86 into a part of the case 10 (a portion formed extending obliquely from the lower surface of the case 10 into the case 10). The shaft 14 is supported on the front side of the mounting member 85. The shaft 14 may be provided with a helical spring in which an elastic force acts in a direction in which the dust collecting basket 12 is pushed out to the front lid 11 side.
When the dust collection basket 12 jumps out to the front side, the mounting member 85 remains on the case 10 side, and only the dust collection basket 12 is displaced forward with the shaft 14 as a fulcrum. Here, the attachment member 85 is perpendicular to the bottom surface of the cleaner body 1 or the surface on which the cleaner body 1 is placed and to the bottom surface of the cleaner body 1 or the surface on which the cleaner body 1 is placed. It forms in the diagonal direction with respect to the direction or the formation direction of the axial direction other end surface of the dust accommodating part 5 or the case 10. The attachment member 85 may be formed in a direction substantially perpendicular to the formation direction of the one end surface in the axial direction of the dust container 5 or the case 10. The dust container 5 and the case 19 have a substantially inverted triangular shape or a substantially fan shape when viewed from the side, that is, the lower side is shorter than the upper side. In such a dust container 5, when the mounting member is formed in the horizontal direction as in Patent Document 3, the lower side of the dust container 5 becomes long, and the axial length of the dust collector 2 becomes long. The length of the vacuum cleaner body 1 in the front-rear direction is also increased. If the mounting member 85 itself is shortened, the strength for fixing the mounting member 85 to the case 10 is insufficient. In particular, when a helical spring is formed on the shaft 14, the elastic force of the helical spring reacts with the attachment member 85, so that the attachment member 85 is easily bent or damaged. Even when the dust-collecting basket 12 is protruded, the load of the dust-collecting basket 12 is applied to the mounting member 85, so that it is easily bent or damaged. Therefore, in order to lengthen the attachment member 85 (1/2 or more of the axial length of the dust collecting basket 12) and shorten the lower side of the dust container 5, the attachment member 85 is attached to the bottom surface of the cleaner body 1 or The direction parallel to the surface on which the cleaner body 1 is placed and the direction perpendicular to the bottom surface of the cleaner body 1 or the surface on which the cleaner body 1 is placed, or the axis of the dust container 5 or the case 10 It forms in the diagonal direction with respect to the formation direction of a direction other end surface. In FIG. 31, the user can remove the dust collecting basket 12 together with the mounting member 85 from the case 10 by pressing the portion of the mounting member 85 that is indicated as “push”.
図32は、本発明の実施例4の塵埃収容部を側面から見た断面図である。特に、ケース10に対して前蓋11が開き、集塵かご12がケース10の前方方向へ飛び出した状態を示す。図23に示す通り、軸心は垂直方向に対して角度a傾斜しており、前蓋11の軸方向一端面および軸方向他端面の形成方向およびケース10の軸方向一端面の形成方向は、軸方向に対して略垂直である。よって、前蓋11の軸方向一端面および軸方向他端面の形成方向およびケース10の軸方向一端面の形成方向は、垂直方向(重力作用方向)に対して略(180−a)度傾斜しており、水平方向(重力作用方向に垂直な方向)に対して略角度a傾斜している。よって、ケース10の軸方向一端面の形成方向は、水平方向に対して角度e傾斜しており、この角度eは角度aに略等しい。よって、例えば、角度eも、角度aと同様に、40度〜45度の範囲内の所定の角度である。前蓋11は、ケース10に対して軸31を支点として前方向から下方向へ回動するが、図32に示す通り前蓋11の軸方向一端面および軸方向他端面の形成方向が少なくとも略垂直方向になるまで開口可能である。前蓋11は、ケース10の軸方向一端面の形成方向に対しては、少なくとも角度(e+90)度開口可能である。前蓋11は、ケース10の軸方向一端面の形成方向に対して、角度(e+90)度より大きく開口するのが好ましい。尚、水平方向に対する面の形成方向の角度は、垂直方向に対する面の法線方向の角度と同一である。
FIG. 32 is a cross-sectional view of the dust container of Example 4 of the present invention as viewed from the side. In particular, a state in which the front lid 11 is opened with respect to the case 10 and the dust collecting basket 12 has protruded forward in the case 10 is shown. As shown in FIG. 23, the axis is inclined at an angle a with respect to the vertical direction, and the forming direction of the axial one end face and the axial other end face of the front lid 11 and the forming direction of the axial one end face of the case 10 are It is substantially perpendicular to the axial direction. Therefore, the forming direction of the one end face in the axial direction and the other end face in the axial direction of the front lid 11 and the forming direction of the one end face in the axial direction of the case 10 are inclined approximately (180-a) degrees with respect to the vertical direction (gravity acting direction). It is inclined substantially at angle a with respect to the horizontal direction (direction perpendicular to the direction of gravity action). Therefore, the forming direction of the one axial end surface of the case 10 is inclined by the angle e with respect to the horizontal direction, and this angle e is substantially equal to the angle a. Therefore, for example, the angle e is also a predetermined angle within a range of 40 degrees to 45 degrees, similarly to the angle a. The front lid 11 rotates from the front to the bottom with the shaft 31 as a fulcrum with respect to the case 10, but as shown in FIG. 32, the formation direction of the one end surface in the axial direction and the other end surface in the axial direction of the front lid 11 is at least approximately. Opening is possible until the vertical direction is reached. The front lid 11 can be opened at least at an angle (e + 90) degrees with respect to the forming direction of the one axial end surface of the case 10. The front lid 11 preferably opens more than an angle (e + 90) degrees with respect to the forming direction of the one axial end surface of the case 10. The angle of the surface formation direction with respect to the horizontal direction is the same as the angle of the surface normal direction with respect to the vertical direction.
集塵かご12は、ケース10からの飛び出しに伴い集塵かごの底部84の中間の外側に形成された軸13を支点として、集塵かごの上半部88と集塵かごの下半部89に割れ、集塵かごの上半部88と集塵かごの下半部89とは相対的に角度gだけ開く。例えば、角度gは11.5度程度である。集塵かごの上半部88の外側に形成された突起部材87(集塵かご12の一部)が、ケース10の軸方向一端面開口の内側に当接し、集塵かご12の飛び出しが規制される。この規制によって、集塵かごの下半部89の前側端面は、ケース10の軸方向一端面に対して、最大で角度f開くことになる。例えば、角度fは33度程度である。尚、集塵かご12の前側端面(開口面)と底面とは略平行である。集塵かごの上半部88の前側端面は、ケース10の軸方向一端面に対して、最大で角度(f−g)開くことになる。また、集塵かごの下半部89の前側端面は、水平方向に対しては、角度(e−f)になるまで開くことになる。例えば、角度eを40度、角度fを33度とすると、角度(e−f)は7度程度となる。つまり、集塵かごの下半部89の前側端面は、水平方向に対して、7度程度まで近接し、集塵かごの上半部88の前側端面も、水平方向に対して、(11.5+7)=18.5度程度まで近接する。よって、集塵かごの上半部88の前側端面および集塵かごの下半部89の前側端面は、水平方向に近くなり、つまり水平方向と垂直方向との中間の45度よりも水平方向に近くなり、換言すると、集塵かごの上半部88の前側端面および集塵かごの下半部89の前側端面の法線方向が、垂直方向(重力作用方向)に近くなり、つまり水平方向と垂直方向との中間の45度よりも垂直方向に近くなるため、集塵かご12に堆積した塵埃83が落下しやすくなる。
The dust collecting basket 12 has an upper half 88 of the dust collecting basket and a lower half 89 of the dust collecting basket with the shaft 13 formed outside the middle 84 of the dust collecting basket as it protrudes from the case 10 as a fulcrum. The upper half 88 of the dust collection basket and the lower half 89 of the dust collection basket are relatively opened by an angle g. For example, the angle g is about 11.5 degrees. A protruding member 87 (a part of the dust collecting basket 12) formed on the outside of the upper half 88 of the dust collecting basket abuts on the inner side of the opening on the one end surface in the axial direction of the case 10, and the jumping out of the dust collecting basket 12 is restricted. Is done. With this restriction, the front end surface of the lower half portion 89 of the dust collecting basket is opened at an angle f at the maximum with respect to the one axial end surface of the case 10. For example, the angle f is about 33 degrees. The front end face (opening face) and the bottom face of the dust collecting basket 12 are substantially parallel. The front end surface of the upper half 88 of the dust collecting basket is opened at an angle (fg) at the maximum with respect to the one end surface in the axial direction of the case 10. Further, the front end surface of the lower half portion 89 of the dust collecting basket is opened until the angle (ef) is obtained with respect to the horizontal direction. For example, if the angle e is 40 degrees and the angle f is 33 degrees, the angle (ef) is about 7 degrees. That is, the front end surface of the lower half 89 of the dust collecting basket is close to about 7 degrees with respect to the horizontal direction, and the front end surface of the upper half 88 of the dust collecting basket is also (11. 5 + 7) = 1. Therefore, the front end surface of the upper half 88 of the dust collection basket and the front end surface of the lower half 89 of the dust collection basket are close to the horizontal direction, that is, in the horizontal direction more than 45 degrees between the horizontal direction and the vertical direction. In other words, the normal direction of the front end face of the upper half 88 of the dust collecting basket and the front end face of the lower half 89 of the dust collecting basket is close to the vertical direction (gravity acting direction), that is, the horizontal direction Since it is closer to the vertical direction than 45 degrees, which is the middle of the vertical direction, the dust 83 deposited on the dust collecting basket 12 is likely to fall.
把手16は、塵埃収容部5の後端から前側にかけてなだらかに傾斜している。使用者は、前蓋11を開くために把手16の前方に形成されたボタン17を操作するために、把手16の前側を持つことになる。塵埃収容部5の重心位置に依存するが、使用者が把手16の前側を持つと、把手16の前側が傾斜しているため塵埃収容部5全体が水平方向に対してやや上向きに傾斜することになる。把手16の前側の形成方向(接線方向)が、水平方向に対して角度h傾斜しているとすると、塵埃収容部5全体が水平方向に対して角度h上向きとなる。例えば、角度hは12度程度である。使用者が把手16の前側を持って集塵かご12内の塵埃83を排出する場合にも、集塵かごの下半部89の前側端面は、水平方向に対して、角度(e−f+h)、例えば、19度まで近接し、集塵かごの上半部88の前側端面も、水平方向に対して、角度(e−f+g+h)、例えば、30.5度程度まで近接する。よって、使用者が把手16の前側を持って集塵かご12内の塵埃83を排出する場合にも、集塵かごの上半部88の前側端面および集塵かごの下半部89の前側端面は、水平方向に近くなり、つまり水平方向と垂直方向との中間の45度よりも水平方向に近くなるため、集塵かご12に堆積した塵埃83が落下しやすくなる。ただし、把手16が塵埃収容部5の後端から前側にかけてなだらかに傾斜していることは必須ではなく、把手16が水平方向に真っ直ぐに形成されてもよい。
The handle 16 is gently inclined from the rear end to the front side of the dust container 5. The user has the front side of the handle 16 in order to operate a button 17 formed in front of the handle 16 in order to open the front lid 11. Although it depends on the position of the center of gravity of the dust container 5, if the user has the front side of the handle 16, the front side of the handle 16 is inclined so that the entire dust container 5 is inclined slightly upward with respect to the horizontal direction. become. Assuming that the formation direction (tangential direction) on the front side of the handle 16 is inclined at an angle h with respect to the horizontal direction, the entire dust container 5 is at an angle h upward with respect to the horizontal direction. For example, the angle h is about 12 degrees. Even when the user holds the front side of the handle 16 and discharges the dust 83 in the dust collecting basket 12, the front end surface of the lower half 89 of the dust collecting basket is at an angle (ef−h + h) with respect to the horizontal direction. For example, close to 19 degrees, and the front end surface of the upper half 88 of the dust collecting basket is also close to an angle (e−f + g + h), for example, about 30.5 degrees with respect to the horizontal direction. Therefore, even when the user holds the front side of the handle 16 and discharges the dust 83 in the dust collecting basket 12, the front end face of the upper half 88 of the dust collecting basket and the front end face of the lower half 89 of the dust collecting basket. Is closer to the horizontal direction, that is, closer to the horizontal direction than 45 degrees between the horizontal direction and the vertical direction, so that the dust 83 accumulated in the dust collecting basket 12 can easily fall. However, it is not essential that the handle 16 is gently inclined from the rear end to the front side of the dust container 5, and the handle 16 may be formed straight in the horizontal direction.
図33は、本発明の実施例4の塵埃収容部の側面図である。前蓋11の上左側には、圧縮された塵埃の堆積量を目視できる透明または半透明の窓74が形成される。特に、ケース10が不透明である場合には、使用者は塵埃83の堆積量を目視できないため、窓74が必要となる。窓74には、ごみ捨てライン90が描かれており、ごみ捨て時期を使用者に知らせることができる。ごみ捨てライン90の形成方向は、集塵かご12内の塵埃83の堆積方向に対して略垂直な方向、すなわちフィルタ15への吸い込み方向に対して略垂直な方向、すなわち略水平方向に対して略垂直な方向である。また、ごみ捨てライン90の形成位置は、集塵かご12内に堆積した塵埃83が前蓋11の軸方向一端部の開口からこぼれ落ちない位置、例えば、前蓋11の軸方向一端部の開口の下端に対応する位置である。外側流路35が塵埃により塞がれたとしても、内側流路36が開口しているため、吸引力はそれほど低下しない。よって、ごみ捨てライン90の形成位置を、塵埃83が前蓋11の開口からこぼれ落ちない位置とすることによって、集塵かご12内に可能な限り塵埃を堆積して、使用者が塵埃を排出する回数を低減し、使用者の負担を軽減することができる。ただし、吸引力の維持を優先する場合には、ごみ捨てライン90の形成位置を、後側かつ下側にしてもよい。窓74は、前蓋11の左側に形成される代わりに、右側に形成されてもよいし、前蓋11に形成される代わりに、ケース10に形成されてもよい。
FIG. 33 is a side view of the dust container of Embodiment 4 of the present invention. On the upper left side of the front lid 11, a transparent or translucent window 74 is formed through which the accumulated amount of compressed dust can be visually observed. In particular, when the case 10 is opaque, the user cannot visually check the amount of accumulated dust 83, so the window 74 is necessary. A garbage disposal line 90 is drawn on the window 74, so that the user can be notified of the timing of garbage disposal. The direction in which the dust disposal line 90 is formed is substantially perpendicular to the direction in which the dust 83 is deposited in the dust collecting basket 12, that is, substantially perpendicular to the suction direction to the filter 15, that is, approximately horizontal. The vertical direction. The dust disposal line 90 is formed at a position where the dust 83 accumulated in the dust collecting basket 12 does not spill from the opening at one end of the front lid 11 in the axial direction, for example, the lower end of the opening at one end of the front lid 11 in the axial direction. Is a position corresponding to. Even if the outer flow path 35 is blocked by dust, the suction force does not decrease so much because the inner flow path 36 is open. Therefore, the number of times that the dust is deposited in the dust collecting basket 12 as much as possible and the user discharges the dust by setting the dust disposal line 90 to a position where the dust 83 does not spill from the opening of the front lid 11. And the burden on the user can be reduced. However, when priority is given to maintaining the suction force, the waste disposal line 90 may be formed at the rear side and the lower side. The window 74 may be formed on the right side instead of being formed on the left side of the front lid 11, and may be formed on the case 10 instead of being formed on the front lid 11.
図34は、本発明の実施例4の塵埃収容部の右側から見た断面図である。図34(a)は、集塵かご12の全開状態であり、図34(a)は、集塵かご12の半開状態を示す。
上記で説明した通り、突起部材87が、ケース10の軸方向一端面開口の内側に当接し、集塵かご12の飛び出しが規制されて、図34(a)のような全開状態となる。
FIG. 34 is a cross-sectional view seen from the right side of the dust container according to the fourth embodiment of the present invention. FIG. 34A shows a fully opened state of the dust collecting basket 12, and FIG. 34A shows a half-opened state of the dust collecting basket 12.
As described above, the protruding member 87 comes into contact with the inside of the opening on the one end surface in the axial direction of the case 10 to restrict the dust collecting basket 12 from jumping out, so that the fully opened state as shown in FIG.
図34(a)の拡大図に示す通り、集塵かごの上半部88の上側の前側には、集塵かご12を半開状態に維持するための突起部材91および突起部材92を備える。突起部材91および突起部材92は何れも三角形状を有する。突起部材91と突起部材92とは前後方向に直線状に形成され、突起部材91は前側に形成され、突起部材92は後側に形成され、突起部材91と突起部材92との間には間隙(凹部)を有する。突起部材91と突起部材92の頂点の高さは、集塵かごの上半部88の上面を基準にして、同一か、突起部材92のほうが低いのが好ましい。図34(a)において、突起部材91の左辺(前側面)の傾斜角は、突起部材92の右辺(後側面)の傾斜角よりも大きいのが好ましい。突起部材92の左辺(前側面)の傾斜角は、突起部材92の右辺の傾斜角よりも大きい。突起部材92の左辺の傾斜角は、底辺に対して90度に近い(80度〜90度)であるのが好ましい。突起部材91の右辺(後側面)の傾斜角は、突起部材91の左辺の傾斜角よりも大きい。
As shown in the enlarged view of FIG. 34 (a), a protrusion 91 and a protrusion 92 for maintaining the dust collection basket 12 in a half-open state are provided on the upper front side of the upper half 88 of the dust collection basket. Both the projecting member 91 and the projecting member 92 have a triangular shape. The projecting member 91 and the projecting member 92 are linearly formed in the front-rear direction, the projecting member 91 is formed on the front side, the projecting member 92 is formed on the rear side, and a gap is provided between the projecting member 91 and the projecting member 92. (Concave). The heights of the vertices of the protruding member 91 and the protruding member 92 are preferably the same or lower with respect to the upper surface of the upper half 88 of the dust collecting basket. In FIG. 34A, the inclination angle of the left side (front side surface) of the protrusion member 91 is preferably larger than the inclination angle of the right side (rear side surface) of the protrusion member 92. The inclination angle of the left side (front side surface) of the protruding member 92 is larger than the inclination angle of the right side of the protruding member 92. The inclination angle of the left side of the protruding member 92 is preferably close to 90 degrees (80 to 90 degrees) with respect to the bottom side. The inclination angle of the right side (rear side surface) of the protruding member 91 is larger than the inclination angle of the left side of the protruding member 91.
そして、ケース10の前方へ集塵かご12が飛び出す場合には、集塵かご12の自重やバネの付勢力によっていきおいがあるため、ケース10の軸方向一端面開口の内側に突出した端部93が、突起部材91の左辺をすべり、突起部材91と突起部材92との間の間隙を飛び越えて、突起部材92の右辺をすべる。よって、集塵かご12は、図34(b)に示すような半開状態になることなく、全開状態となる。一方、使用者の操作によって、ケース10内に集塵かご12を収納する場合には、端部93が、使用者の押す力が強いと突起部材91と突起部材92との間の間隙を飛び越えることになるが、使用者の押す力が弱いと、端部93が、突起部材92の右辺をすべり、突起部材92の頂点を乗り越えて、突起部材92の左辺をすべり、突起部材91と突起部材92との間の間隙に落ちることになる。このとき、使用者が集塵かご12を押す力を排除すると、端部93が、突起部材92の左辺に当接し、ケース10の前方への集塵かご12の飛び出し(回動)が規制されて、半開状態となる。そして、半開状態から、使用者が、前蓋11を集塵かご12の前面に当接し、前蓋11の軸方向一端面に押す力を加えることによって、前蓋11の軸方向他端面が集塵かご12の前面を押し、端部93が、突起部材91の右辺をすべり、突起部材91の頂点を乗り越えて、突起部材91の左辺をすべり、集塵かご12が収納状態となると共に、前蓋11が全閉状態となる。ただし、突起部材91の左辺も傾斜を有するため、前蓋11が開放状態であっても、あるいは、使用者が集塵かご12を押さえていなくても、集塵かご12の前面開口を上方に向ければ、端部93が、突起部材91の左辺に当接して、集塵かご12の収納状態を維持できる。これによって、使用者は、集塵かご12をケース10内に収納しやすくなり、前蓋11も閉じ易くなる。
When the dust collection basket 12 jumps out to the front of the case 10, there is a depression due to the weight of the dust collection basket 12 or the urging force of the spring, and therefore an end portion 93 that protrudes inside the axial end face opening of the case 10. However, the left side of the projecting member 91 slides, jumps over the gap between the projecting member 91 and the projecting member 92, and slides on the right side of the projecting member 92. Therefore, the dust collecting basket 12 is fully opened without being half opened as shown in FIG. On the other hand, when the dust collecting basket 12 is accommodated in the case 10 by a user's operation, the end 93 jumps over the gap between the protruding member 91 and the protruding member 92 when the user's pushing force is strong. However, when the pressing force of the user is weak, the end portion 93 slides on the right side of the protruding member 92, climbs over the apex of the protruding member 92, slides on the left side of the protruding member 92, and the protruding member 91 and the protruding member Will fall into the gap between the two. At this time, if the user removes the force pushing the dust collecting basket 12, the end portion 93 comes into contact with the left side of the projecting member 92, and the jumping (turning) of the dust collecting basket 12 to the front of the case 10 is restricted. In a half-open state. Then, from the half-opened state, the user abuts the front lid 11 against the front surface of the dust collecting basket 12 and applies a pressing force to one end surface in the axial direction of the front lid 11, so that the other axial end surface of the front lid 11 is collected. The front surface of the dust basket 12 is pushed, the end 93 slides on the right side of the projection member 91, climbs over the top of the projection member 91, slides on the left side of the projection member 91, and the dust collection basket 12 enters the storage state. The lid 11 is fully closed. However, since the left side of the protruding member 91 is also inclined, even if the front lid 11 is in an open state or the user is not holding the dust collecting basket 12, the front opening of the dust collecting basket 12 is directed upward. If directed, the end 93 abuts on the left side of the protruding member 91, and the stored state of the dust collecting basket 12 can be maintained. As a result, the user can easily store the dust collecting basket 12 in the case 10 and the front lid 11 can be easily closed.
そして、使用者は、半開状態において、集塵かご12の前面開口を上方に向け、集塵かご12の内側にティッシュペーパを設定し、ティッシュペーパの上から集塵かご12の底面を押して、集塵かご12をケース10内に押し込めば、前蓋11を開いた状態で、集塵かご12をケース10内に収納できる。使用者は、その後、前蓋11を閉じることができる。これにより、使用者は、集塵かご12をケース10内に収納する動作をすれば、集塵かご12の底面までティッシュペーパを押し込むことになるため、ティッシュペーパを集塵かご12の底面および上下左右の側壁面に密着して、確実に装着することができる。そして、ティッシュペーパを集塵かご12の底面および上下左右の側壁面に密着して装着できれば、塵埃を捕集した際に、ティッシュペーパが破損するのを抑制できる。
In the half-open state, the user sets the tissue paper inside the dust collection basket 12 with the front opening of the dust collection basket 12 facing upward, and pushes the bottom surface of the dust collection basket 12 from above the tissue paper to collect the dust. If the dust basket 12 is pushed into the case 10, the dust collection basket 12 can be stored in the case 10 with the front lid 11 opened. The user can then close the front lid 11. As a result, when the user moves the dust collecting basket 12 into the case 10, the user pushes the tissue paper to the bottom surface of the dust collecting basket 12. It can be securely attached to the left and right side wall surfaces. If the tissue paper can be mounted in close contact with the bottom surface of the dust collecting basket 12 and the upper, lower, left and right side wall surfaces, it is possible to prevent the tissue paper from being damaged when dust is collected.
以下、実施例1〜4の他の実施例を説明する。
Hereinafter, other examples of Examples 1 to 4 will be described.
実施例1〜4では、パッキング9の外周部の軸方向根元側端部が軸方向を向いて終端しているのに対し、実施例5では、パッキング9の外周部の軸方向根元側端部が外周方向へ延びている点を特徴とする。また、実施例1〜4に対し、実施例5では、段差にリブ95を追加した点を特徴とする。また、実施例1〜4に対し、実施例5では、内筒7の軸方向先端部に位置決め用のリブ96を追加した点を特徴とする。実施例1〜4に対し、実施例5では、内筒7のパッキング9の外周面のうち下側に位置決め用の凸部98を追加した点を特徴とする。実施例1〜4に対し、実施例5では、前蓋11内の外側流路35内に軸方向に延びるリブ104を形成し、外側流路35を上側に狭くした点を特徴とする。実施例1〜4に対し、実施例5では、前蓋11のパッキング受け面76とパッキング受け面77との間に外部と連通する貫通孔105を追加した点を特徴とする。
In Examples 1 to 4, the axial base end of the outer peripheral portion of the packing 9 terminates in the axial direction, whereas in Example 5, the axial base end of the outer peripheral portion of the packing 9 is terminated. Is characterized by extending in the outer circumferential direction. Further, in contrast to the first to fourth embodiments, the fifth embodiment is characterized in that a rib 95 is added to the step. Further, the fifth embodiment is characterized in that a positioning rib 96 is added to the tip portion in the axial direction of the inner cylinder 7 as compared with the first to fourth embodiments. In contrast to the first to fourth embodiments, the fifth embodiment is characterized in that a positioning convex portion 98 is added to the lower side of the outer peripheral surface of the packing 9 of the inner cylinder 7. In contrast to the first to fourth embodiments, the fifth embodiment is characterized in that a rib 104 extending in the axial direction is formed in the outer flow path 35 in the front lid 11 and the outer flow path 35 is narrowed upward. In contrast to the first to fourth embodiments, the fifth embodiment is characterized in that a through hole 105 communicating with the outside is added between the packing receiving surface 76 and the packing receiving surface 77 of the front lid 11.
つまり、本発明は、第1の集塵部(例えば、塵埃分離部4)は、円周面に複数の貫通孔を有する内筒7を略円筒形状の外筒6内に内包し、内筒の第2の集塵部側の端部(例えば、軸方向根元側端部)と外筒6との間にシール部材(例えば、パッキング9)を有し、シール部材の第2の集塵部側の端部は、外周側に延びていることを特徴とする(外延部94)。これにより、内筒の第2の集塵部側の端部と外筒との気密を十分に確保でき、空気のエネルギー損失を低減しまたは騒音を低減できる。
That is, according to the present invention, the first dust collecting part (for example, the dust separating part 4) includes the inner cylinder 7 having a plurality of through holes on the circumferential surface in the substantially cylindrical outer cylinder 6, and the inner cylinder A second dust collecting portion of the sealing member having a sealing member (for example, packing 9) between the second dust collecting portion side end portion (for example, axial base side end portion) and the outer cylinder 6. The end portion on the side extends to the outer peripheral side (extended portion 94). Thereby, airtightness between the end of the inner cylinder on the second dust collecting portion side and the outer cylinder can be sufficiently secured, and energy loss of air can be reduced or noise can be reduced.
または、本発明は、第1の集塵部(例えば、塵埃分離部4)は、円周面に複数の貫通孔を有する内筒7を略円筒形状の外筒6内に内包し、内筒7の本体吸気口側の端部(例えば、軸方向先端側端部)から内筒7の外周面に向かって形成された流路(例えば、凹み部8および案内管38)を有し、外筒6の本体吸気口側の端部の内面のうち流路の側壁に対向する部分に、突起部材(例えば、リブ95)を有することを特徴とする。これにより、内筒の本体吸気口側の端部と外筒との気密を十分に確保でき、空気のエネルギー損失を低減しまたは騒音を低減できる。
Alternatively, in the present invention, the first dust collecting part (for example, the dust separating part 4) includes the inner cylinder 7 having a plurality of through holes on the circumferential surface in the substantially cylindrical outer cylinder 6, and the inner cylinder 7 has a flow path (for example, a recess 8 and a guide tube 38) formed from an end on the main body inlet side (for example, an end on the front end side in the axial direction) toward the outer peripheral surface of the inner cylinder 7, A protruding member (for example, a rib 95) is provided on a portion of the inner surface of the end portion on the main body inlet side of the cylinder 6 facing the side wall of the flow path. Thereby, airtightness between the end of the inner cylinder on the main body inlet side and the outer cylinder can be sufficiently secured, and energy loss of air can be reduced or noise can be reduced.
または、本発明は、第1の集塵部(例えば、塵埃分離部4)は、円周面に複数の貫通孔を有する内筒7を略円筒形状内に内包し、内筒7の本体吸気口側の端部(例えば、軸方向先端側端部)のうち下側に、突起部材(例えば、リブ96)を有することを特徴とする。これにより、外筒内に内筒を装着する際に外筒と内筒の相対的な位置決めがしやすくなり、外筒内に内筒を装着するのが容易となる。
Alternatively, in the present invention, the first dust collecting part (for example, the dust separating part 4) includes the inner cylinder 7 having a plurality of through holes on the circumferential surface in a substantially cylindrical shape, and the main body intake of the inner cylinder 7 A protruding member (for example, a rib 96) is provided on the lower side of the mouth side end (for example, the axial front end side end). This facilitates relative positioning of the outer cylinder and the inner cylinder when the inner cylinder is mounted in the outer cylinder, and facilitates mounting of the inner cylinder in the outer cylinder.
または、本発明は、第1の集塵部(例えば、塵埃分離部4)は、円周面に複数の貫通孔を有する内筒7を略円筒形状の外筒6内に内包し、内筒7の第2の集塵部側の端部(例えば、軸方向根元側端部)と外筒6との間にシール部材(例えば、パッキング9)を有し、シール部材の外周面のうち下側に、突起部材(例えば、凸部98)を有することを特徴とする。これにより、外筒内に内筒を装着する際に外筒と内筒の相対的な位置決めがしやすくなり、外筒内に内筒を装着するのが容易となる。
Alternatively, in the present invention, the first dust collecting part (for example, the dust separating part 4) includes the inner cylinder 7 having a plurality of through holes on the circumferential surface in the substantially cylindrical outer cylinder 6, and the inner cylinder 7 has a seal member (for example, packing 9) between the end portion (for example, the axial base side end portion) on the second dust collecting portion side and the outer cylinder 6, and the bottom of the outer peripheral surface of the seal member It has a protrusion member (for example, convex part 98) on the side. This facilitates relative positioning of the outer cylinder and the inner cylinder when the inner cylinder is mounted in the outer cylinder, and facilitates mounting of the inner cylinder in the outer cylinder.
または、本発明は、第2の集塵部(例えば、塵埃収容部5)は、第1の集塵部(例えば、塵埃分離部4)と連通する流路(例えば、外側流路35)の下側壁面が、軸方向に延びる突起部材(例えば、リブ104)によって形成されることを特徴とする。これにより、第2の集塵部内に溜った塵埃が第1の集塵部側に逆流したり、またはこぼれ落ちるのを抑制できる。
Alternatively, according to the present invention, the second dust collecting unit (for example, the dust container 5) is a channel (for example, the outer channel 35) communicating with the first dust collecting unit (for example, the dust separating unit 4). The lower wall surface is formed by a protruding member (for example, a rib 104) extending in the axial direction. Thereby, it can suppress that the dust collected in the 2nd dust collection part flows back into the 1st dust collection part side, or spills.
または、本発明は、第1の集塵部(例えば、塵埃分離部4)と第2の集塵部(例えば、塵埃収容部5)とが連通する部分(例えば、前蓋11)に、第1の集塵部と第2の集塵部とが連通する流路(例えば、外側流路35)と集塵装置2の外部(例えば、大気)とを連通する孔(例えば、貫通孔105)を有することを特徴とする。これにより、第1の集塵部と第2の集塵部とが連通する流路に塵埃がつまるのを抑制できる。
Alternatively, according to the present invention, the first dust collecting part (for example, the dust separating part 4) and the second dust collecting part (for example, the dust container 5) communicate with each other (for example, the front lid 11). A hole (for example, through-hole 105) that communicates a flow path (for example, the outer flow path 35) that communicates between the first dust collection portion and the second dust collection portion and the outside (for example, the atmosphere) of the dust collector 2 It is characterized by having. Thereby, it can suppress that dust accumulates in the channel which the 1st dust collection part and the 2nd dust collection part communicate.
図35は、本発明の実施例5の内筒を右側から見た断面図である。図35の拡大図は、リップ68およびパッキング9の軸方向根元側端部の拡大図を示す。
FIG. 35 is a cross-sectional view of the inner cylinder of the fifth embodiment of the present invention viewed from the right side. The enlarged view of FIG. 35 shows an enlarged view of the end portions on the axial direction base side of the lip 68 and the packing 9.
パッキング9の外周部は、リップ68よりも外周側に位置する。パッキング9の外周側の軸方向根元側の端面は、リップ68の軸方向根元側の端面よりも軸方向先端側に位置する。パッキング9の外周面は、軸方向を向いているが、軸方向根元部では次第に径が拡大しており軸方向に対して傾斜している。内筒7が外筒6内に挿入された際に、このパッキング9の外周面が、外筒6の内周面に当接する。このとき、パッキング9の径が拡大している外周部の軸方向根元部が、外筒6の内面に半径方向に押圧(圧迫)され、弾性変形し、パッキング9の外周部の軸方向根元部と外筒6の内面とが密着し、内筒7と外筒6の気密が確保される。しかし、半径方向の密着だけでは、気密が十分に確保できず、空気が漏れ、空気のエネルギー損失の発生や騒音の発生の恐れがある。
The outer peripheral portion of the packing 9 is located on the outer peripheral side with respect to the lip 68. The end surface on the axial base side on the outer peripheral side of the packing 9 is positioned closer to the front end side in the axial direction than the end surface on the axial base side of the lip 68. The outer peripheral surface of the packing 9 faces the axial direction, but the diameter gradually increases at the root portion in the axial direction and is inclined with respect to the axial direction. When the inner cylinder 7 is inserted into the outer cylinder 6, the outer peripheral surface of the packing 9 comes into contact with the inner peripheral surface of the outer cylinder 6. At this time, the axial root portion of the outer peripheral portion where the diameter of the packing 9 is expanded is pressed (squeezed) in the radial direction on the inner surface of the outer cylinder 6 to be elastically deformed, and the axial root portion of the outer peripheral portion of the packing 9 is compressed. And the inner surface of the outer cylinder 6 are in close contact with each other, and the inner cylinder 7 and the outer cylinder 6 are secured airtight. However, airtightness cannot be sufficiently ensured only by the close contact in the radial direction, and air leaks, which may cause energy loss of air or noise.
そこで、実施例5では、図35の拡大部に示すように、パッキング9の外周部の軸方向根元部を、さらに外周側に延長し、外延部94を形成した。よって、パッキング9の外周部の軸方向根元部は、断面で見ると、略L字形状を有する。外延部94は、パッキング9の一周にわたって形成されるのが好ましい。また、外延部94の半径方向の幅は、外筒6の外壁の厚さと同等であるのが好ましいが、外筒6の外壁の厚さよりも多少小さくても、多少大きくてもよい。そして、内筒7が外筒6内に挿入された際に、パッキング9の外周面が、外筒6の外壁の内周面に当接し、外延部94の軸方向先端側の面が、外筒6の軸方向根元側の端面に当接する。つまり、外筒6の軸方向根元側の端面をパッキング9に覆うこととなる。外延部94により、軸方向つまり外筒6内への内筒7の挿入方向でも、内筒7と外筒6の気密が確保される。これによって、気密を十分に確保でき、空気のエネルギー損失を低減でき、騒音も低減できる。
Therefore, in Example 5, as shown in the enlarged portion of FIG. 35, the axial root portion of the outer peripheral portion of the packing 9 is further extended to the outer peripheral side to form the extended portion 94. Therefore, the axial base portion of the outer peripheral portion of the packing 9 has a substantially L shape when viewed in cross section. The extended portion 94 is preferably formed over one circumference of the packing 9. In addition, the radial width of the outer extension 94 is preferably equal to the thickness of the outer wall of the outer cylinder 6, but may be slightly smaller or larger than the thickness of the outer wall of the outer cylinder 6. When the inner cylinder 7 is inserted into the outer cylinder 6, the outer peripheral surface of the packing 9 comes into contact with the inner peripheral surface of the outer wall of the outer cylinder 6, and the axially distal end surface of the outer extension 94 is It abuts on the end surface of the tube 6 on the axial base side. That is, the end surface on the axial base side of the outer cylinder 6 is covered with the packing 9. The outer extending portion 94 ensures airtightness between the inner cylinder 7 and the outer cylinder 6 even in the axial direction, that is, the insertion direction of the inner cylinder 7 into the outer cylinder 6. Thereby, sufficient airtightness can be secured, energy loss of air can be reduced, and noise can also be reduced.
図36(a)は、本発明の実施例5の塵埃分離部を正面から見た斜視図であり、図17(a)は、本発明の実施例5の塵埃分離部を右側側面から見た側面図である。図36(a)の断念拡大図に示すように、外筒7の軸方向端面の内側の段差部分に、軸方向に延びるリブ(突起)95を形成する。リブ95は、板厚が略均一な板状であり、外筒7の軸方向端面の内側の段差部分に沿って湾曲している。リブ95の軸方向の高さD4は、例えば、5〜6mm程度である。D4>(D3−D2)である。つまり、リブ95の軸方向の高さは、段差よりも大きい。外筒7の軸方向端面の内側に段差が形成される範囲に対するリブ95が形成される範囲は、段差が形成される範囲よりも短い。一方、外筒7の軸方向端面の内側のうち、内筒6の軸方向先端部に対応する部分には、段差は形成されていないが、リブ95を形成する。リブ95は、内筒6の軸方向先端部に沿っても湾曲している。よって、リブ95は、外筒7の軸方向端面の内側のうち、案内管38の軸方向先端部に対応する部分の一部から内筒6の軸方向先端部に対応する部分の一部に至るまで、連続的に形成する。ただし、リブ95は、内筒6の軸方向先端部に対応する部分に形成されていなくてもよい。リブ95が形成される範囲は、少なくとも内筒7の上下中心よりも上側に形成されていればよい。断面拡大図に示すように、段差に案内管38の軸方向先端部が当接するように内筒6および外筒7を組み合わせると、リブ95の内周面と、案内管38の軸方向先端部の外周面および内筒6の軸方向先端部の外周面が対向することとなる(好ましくは当接することとなる)。このリブ95も、外筒7の軸方向端面の内側と案内管38の軸方向先端部および内筒6の軸方向先端部との間のシール機能を有するため、段差のみを形成した場合に比較して、空気のエネルギー損失を低減し、または騒音を低減できる。尚、リブ95を形成するのであれば、段差は形成しなくてもよい。
FIG. 36 (a) is a perspective view of the dust separator of Example 5 of the present invention as viewed from the front, and FIG. 17 (a) is the dust separator of Example 5 of the present invention as viewed from the right side. It is a side view. As shown in the enlarged enlarged view of FIG. 36A, a rib (protrusion) 95 extending in the axial direction is formed at the stepped portion inside the axial end surface of the outer cylinder 7. The rib 95 has a plate shape with a substantially uniform plate thickness, and is curved along a step portion inside the axial end surface of the outer cylinder 7. The axial height D4 of the rib 95 is, for example, about 5 to 6 mm. D4> (D3-D2). That is, the axial height of the rib 95 is larger than the step. The range where the rib 95 is formed with respect to the range where the step is formed inside the axial end surface of the outer cylinder 7 is shorter than the range where the step is formed. On the other hand, of the inner side of the axial end surface of the outer cylinder 7, a rib 95 is formed in a portion corresponding to the axial tip of the inner cylinder 6, although no step is formed. The rib 95 is curved also along the axial front end portion of the inner cylinder 6. Accordingly, the rib 95 extends from a part of the inner side of the axial end face of the outer cylinder 7 to a part of the part corresponding to the axial front end of the guide tube 38 to a part of the part corresponding to the axial front end of the inner cylinder 6. To form continuously. However, the rib 95 does not need to be formed in a portion corresponding to the tip portion in the axial direction of the inner cylinder 6. The range in which the rib 95 is formed only needs to be formed at least above the vertical center of the inner cylinder 7. As shown in the enlarged cross-sectional view, when the inner cylinder 6 and the outer cylinder 7 are combined so that the axial tip of the guide tube 38 contacts the step, the inner peripheral surface of the rib 95 and the axial tip of the guide tube 38 The outer peripheral surface of the inner cylinder 6 and the outer peripheral surface of the tip portion in the axial direction of the inner cylinder 6 face each other (preferably abut). Since this rib 95 also has a sealing function between the inner side of the axial end surface of the outer cylinder 7 and the axial front end portion of the guide tube 38 and the axial front end portion of the inner cylinder 6, it is compared with the case where only a step is formed. Thus, energy loss of air can be reduced or noise can be reduced. If the rib 95 is formed, the step need not be formed.
図37は、本発明の実施例5の内筒を外延部裏側から見た斜視図である。図35,図36(a),図37に示すように、内筒6の軸方向先端部のうち下側に、軸方向に延びるリブ(突起)96を形成する。図36(a)の示すように、リブ96は、正面から見ると、略台形状を有しており、軸方向先端側に向かうにしたがって、リブ96の幅は次第に小さくなっている。リブ96は、内筒6の軸方向先端部に沿って、湾曲している。図35に示すように、リブ96の根元側の厚さは、円柱部分57の軸方向先端部の厚さD1よりも多少小さいが、同等であってもよい。図35に示すように、リブ96の根元側の厚さは、軸方向先端側に向かうにしたがって、次第に小さくなっている。このリブ96は、外筒6内に内筒7を装着する際のガイド機能を有する。
FIG. 37 is a perspective view of the inner cylinder according to the fifth embodiment of the present invention as viewed from the rear side of the outer extension. As shown in FIGS. 35, 36 (a), and 37, a rib (protrusion) 96 extending in the axial direction is formed on the lower side of the tip portion in the axial direction of the inner cylinder 6. As shown in FIG. 36 (a), the rib 96 has a substantially trapezoidal shape when viewed from the front, and the width of the rib 96 gradually decreases toward the tip end side in the axial direction. The rib 96 is curved along the axial front end portion of the inner cylinder 6. As shown in FIG. 35, the thickness on the base side of the rib 96 is slightly smaller than the thickness D1 of the axial tip portion of the cylindrical portion 57, but may be equivalent. As shown in FIG. 35, the thickness of the base side of the rib 96 gradually decreases toward the tip end side in the axial direction. The rib 96 has a guide function when the inner cylinder 7 is mounted in the outer cylinder 6.
一方、図36(b)の示すように、外筒6の軸方向先端部の内側のうち下側および入口管3の内側の下側には、リブ96の形状に対応する形状を有する係合穴97を形成する。係合穴97は、外筒6に内筒7を装着した際に、リブ96に対応する位置に形成される。ただし、係合穴97は、リブ96が挿入しやすいように、リブ96よりも多少大きいのが好ましい。係合穴97は、閉塞された穴である。係合穴97の軸方向根元側(開口側)は、係合穴97の軸方向先端側(閉塞側)に比較して、開口面積が大きいのが好ましい。つまり、係合穴97の軸方向根元側は、幅および厚さが大きくなっているのが好ましい。
On the other hand, as shown in FIG. 36 (b), an engagement having a shape corresponding to the shape of the rib 96 is provided on the lower side inside the axial tip of the outer cylinder 6 and on the lower side inside the inlet pipe 3. A hole 97 is formed. The engagement hole 97 is formed at a position corresponding to the rib 96 when the inner cylinder 7 is attached to the outer cylinder 6. However, the engagement hole 97 is preferably slightly larger than the rib 96 so that the rib 96 can be easily inserted. The engagement hole 97 is a closed hole. The axial base side (opening side) of the engagement hole 97 preferably has a larger opening area than the axial front end side (closed side) of the engagement hole 97. That is, it is preferable that the width and thickness of the engagement hole 97 on the axial base side are large.
使用者は、凹み部39の内側または外側を持つと、内筒7の上側が、使用者にとっても上側となり、内筒7の下側が、使用者にとっても下側となる。使用者は、凹み部39の内側または外側を手で持って外筒6内に内筒7を装着する際に、下側に位置するリブ96を係合穴97に挿入すれば、円周方向あるいは左右方向の内筒7と外筒6の相対位置が決められるため、その後、内筒6の上側を外筒6内に挿入しやすくなる。これによって、内筒7と外筒6の相対的な位置ズレも抑制できる。内筒7が外筒6に対して浮いて取り付けられたり、曲がって取り付けられたりするのを抑制できる。特に、リブ96が挿入方向である軸方向先端側の幅および厚さが小さく、係合穴97の軸方向根元側の幅および厚さが大きいため、使用者は、リブ96と係合穴97の相対位置が多少ズレていても、リブ96を係合穴97に挿入できる。尚、係合穴97を内筒7の軸方向先端部に形成し、リブ96を外筒6の軸方向先端部の内側に形成してもよい。
When the user has the inside or the outside of the recessed portion 39, the upper side of the inner cylinder 7 is the upper side for the user, and the lower side of the inner cylinder 7 is the lower side for the user. When the user inserts the rib 96 positioned on the lower side into the engagement hole 97 when the inner cylinder 7 is mounted in the outer cylinder 6 while holding the inner side or the outer side of the recess 39 by hand, the circumferential direction Alternatively, since the relative positions of the inner cylinder 7 and the outer cylinder 6 in the left-right direction are determined, it becomes easier to insert the upper side of the inner cylinder 6 into the outer cylinder 6 thereafter. Thereby, the relative position shift of the inner cylinder 7 and the outer cylinder 6 can also be suppressed. It can suppress that the inner cylinder 7 floats with respect to the outer cylinder 6, or is bent and attached. In particular, the rib 96 has a small width and thickness on the distal end side in the axial direction, which is the insertion direction, and a large width and thickness on the axial base side of the engagement hole 97, so that the user can use the rib 96 and the engagement hole 97. The rib 96 can be inserted into the engagement hole 97 even if the relative position is slightly shifted. Note that the engagement hole 97 may be formed at the axial tip of the inner cylinder 7 and the rib 96 may be formed inside the axial tip of the outer cylinder 6.
図35,図36(b),図37に示すように、内筒7のパッキング9の外周面のうち下側に、外周側に突出する凸部98を形成する。凸部98の突出量は、1mm程度である。図35に示すように、凸部98は、パッキング9の外周面のうち半径方向に拡大する手前の軸方向に延びる部分に形成されるのが好ましい。凸部98は、パッキング9よりも硬質の材料で構成されるのが好ましいが、パッキング9と同一材料で一体に形成されてもよい。
As shown in FIGS. 35, 36 (b), and 37, a convex portion 98 that protrudes outward is formed on the lower side of the outer peripheral surface of the packing 9 of the inner cylinder 7. The protruding amount of the convex portion 98 is about 1 mm. As shown in FIG. 35, the convex portion 98 is preferably formed on a portion of the outer peripheral surface of the packing 9 that extends in the axial direction before expanding in the radial direction. The convex portion 98 is preferably made of a material harder than the packing 9, but may be integrally formed of the same material as the packing 9.
一方、図36(b)に示すように、外筒6の内周面のうち下側に、外周側へ凹んだ凹部99を形成する。凹部99は、外筒6に内筒7を装着した際に、凸部98に対応する位置に形成される。凹部99は、凸部98に対応する形状を有する。凸部98は、閉塞された穴である。
On the other hand, as shown in FIG. 36 (b), a concave portion 99 that is recessed toward the outer peripheral side is formed on the lower side of the inner peripheral surface of the outer cylinder 6. The concave portion 99 is formed at a position corresponding to the convex portion 98 when the inner tube 7 is attached to the outer tube 6. The concave portion 99 has a shape corresponding to the convex portion 98. The convex portion 98 is a closed hole.
使用者は、凹み部39の内側または外側を手で持って外筒6内に内筒7を装着する際に、リブ96よりも下側に位置する凸部98を凹部99に嵌め込み、次に、リブ96を係合穴97に挿入すれば、円周方向あるいは左右方向の内筒7と外筒6の相対位置が決められるため、その後、内筒6の上側を外筒6内に挿入しやすくなる。これによって、リブ96および係合穴97のみを形成した場合に比較して、内筒7と外筒6の相対的な位置ズレを抑制できる。内筒7が外筒6に対して浮いて取り付けられたり、曲がって取り付けられたりするのを抑制できる。また、凸部98を内筒7のパッキング9の外周面に形成し、凹部99を外筒6の外周壁の内周面に形成しているため、軸方向に対しても、相対的に抵抗となる。よって、凸部98および凹部99により、内筒7が外筒6内に装着された状態で、使用者が凹み部39の内側または外側を手で持った際に、内筒7が外筒6から脱落するのを抑制することもできる。尚、凹部99を内筒7のパッキング9の外周面に形成し、凸部98を外筒6の外周壁の内周面に形成してもよい。
When the user attaches the inner cylinder 7 in the outer cylinder 6 while holding the inner side or the outer side of the concave part 39 with his / her hand, the user inserts the convex part 98 positioned below the rib 96 into the concave part 99, and then If the rib 96 is inserted into the engagement hole 97, the relative position between the inner cylinder 7 and the outer cylinder 6 in the circumferential direction or the left-right direction can be determined. Thereafter, the upper side of the inner cylinder 6 is inserted into the outer cylinder 6. It becomes easy. As a result, the relative displacement between the inner cylinder 7 and the outer cylinder 6 can be suppressed as compared with the case where only the rib 96 and the engagement hole 97 are formed. It can suppress that the inner cylinder 7 floats with respect to the outer cylinder 6, or is bent and attached. Moreover, since the convex part 98 is formed in the outer peripheral surface of the packing 9 of the inner cylinder 7, and the recessed part 99 is formed in the inner peripheral surface of the outer peripheral wall of the outer cylinder 6, it is relatively resistant also to an axial direction. It becomes. Therefore, when the user holds the inner side or the outer side of the recessed portion 39 with the convex portion 98 and the concave portion 99 attached to the inner tube 7 in the outer tube 6, the inner tube 7 is moved to the outer tube 6. Can also be prevented from falling off. The concave portion 99 may be formed on the outer peripheral surface of the packing 9 of the inner cylinder 7, and the convex portion 98 may be formed on the inner peripheral surface of the outer peripheral wall of the outer cylinder 6.
リップ68およびリップ69、パッキング9の表面にシボ加工を施し、または、微細な凹凸を形成してもよい。または、リップ68およびリップ69、パッキング9の表面に、潤滑剤を塗布してもよい。潤滑剤としては、例えば、フッ素を含んだ材料を用いる。または、リップ68およびリップ69、パッキング9に、フッ素を練り込んでもよい。これにより、リップ68およびリップ69がパッキング受け面76およびパッキング受け面77に固着し、または、パッキング9が外筒6の外周壁の内周面に固着して、分離しにくくなるのを抑制できる。リップ68およびリップ69がパッキング受け面76およびパッキング受け面77に固着するのを抑制し、または、パッキング9が外筒6の外周壁の内周面に固着するのを抑制するものであれば、上記実施例に限定されるものではない。
The surface of the lip 68, the lip 69, and the packing 9 may be textured, or fine irregularities may be formed. Alternatively, a lubricant may be applied to the surfaces of the lip 68, the lip 69, and the packing 9. As the lubricant, for example, a material containing fluorine is used. Alternatively, fluorine may be kneaded into the lip 68, the lip 69, and the packing 9. Thereby, it is possible to suppress the lip 68 and the lip 69 from adhering to the packing receiving surface 76 and the packing receiving surface 77, or the packing 9 from adhering to the inner peripheral surface of the outer peripheral wall of the outer cylinder 6 and becoming difficult to separate. . As long as the lip 68 and the lip 69 are suppressed from being fixed to the packing receiving surface 76 and the packing receiving surface 77, or the packing 9 is suppressed from being fixed to the inner peripheral surface of the outer peripheral wall of the outer cylinder 6, The present invention is not limited to the above embodiment.
図38は、本発明の実施例5の塵埃収容部を側面から見た断面図である。図39は、本発明の実施例5の塵埃収容部の前蓋を塵埃収容部内側から見た正面図である。
FIG. 38 is a cross-sectional view of the dust container of Example 5 of the present invention as viewed from the side. FIG. 39 is a front view of the front cover of the dust container according to the fifth embodiment of the present invention as viewed from the inside of the dust container.
図38に示すように、前蓋11の外側流路35内に、軸方向に延びる板形状のリブ104を形成する。リブ104は、前蓋11内の前端から後端に至るまで軸方向に延びている。この結果、リブ104の上側に外側流路35が形成され、リブ104の下側に流路は形成されない。外側流路35の流路断面は、上方向に狭くなっている。リブ104の下側に塵埃が溜るのを防止するのであれば、リブ104を略L字形状とし、リブ104の下側は集塵かご12には連通しない閉塞空間としてもよい。図39では、リブ104は、逆止弁103の裏側に隠れていることから、点線で示している。図39に示すように、リブ104の左右方向の幅は、外側流路35の左右方向の幅に至っている。このリブ104により、集塵かご12内に溜った塵埃が外側流路35からこぼれ落ちるのを抑制することができる。また、リブ104により、外側流路35から流入する流れ62が、上方向つまり集塵かご12の上側壁面に向かうため、流れ62の旋回力が増し、空気と塵埃の分離能力を向上できる。
As shown in FIG. 38, plate-shaped ribs 104 extending in the axial direction are formed in the outer flow path 35 of the front lid 11. The rib 104 extends in the axial direction from the front end to the rear end in the front lid 11. As a result, the outer flow path 35 is formed on the upper side of the rib 104, and no flow path is formed on the lower side of the rib 104. The channel cross section of the outer channel 35 is narrowed upward. In order to prevent dust from accumulating on the lower side of the rib 104, the rib 104 may be substantially L-shaped, and the lower side of the rib 104 may be a closed space that does not communicate with the dust collecting basket 12. In FIG. 39, the rib 104 is hidden by the back side of the check valve 103 and is therefore indicated by a dotted line. As shown in FIG. 39, the lateral width of the rib 104 reaches the lateral width of the outer flow path 35. The ribs 104 can prevent the dust accumulated in the dust collecting basket 12 from spilling from the outer flow path 35. Further, since the flow 62 flowing in from the outer flow path 35 is directed upward, that is, toward the upper wall surface of the dust collecting basket 12 by the rib 104, the turning force of the flow 62 is increased, and the separation capability of air and dust can be improved.
図39に示すように、外側流路35の出口端に、リブ104の上側に形成される外側流路35の出口開口を覆うだけの逆止弁103を形成する。逆止弁103は、上端を支点として、集塵かご12へ回動する。逆止弁103は、弾性材料例えばゴムによって構成されるのが好ましい。この逆止弁103により、集塵かご12内に溜った塵埃が外側流路35からこぼれ落ちるのを抑制することができる。
As shown in FIG. 39, a check valve 103 is formed at the outlet end of the outer flow path 35 only to cover the outlet opening of the outer flow path 35 formed above the rib 104. The check valve 103 rotates to the dust collecting basket 12 with the upper end as a fulcrum. The check valve 103 is preferably made of an elastic material such as rubber. The check valve 103 can suppress the dust accumulated in the dust collecting basket 12 from spilling out from the outer flow path 35.
図40は、本発明の実施例5の塵埃収容部5を軸方向前側から見た正面図である。前蓋11を閉じた状態である。図41は、本発明の実施例5の集塵装置2を上側から見た断面図である。
FIG. 40 is a front view of the dust container 5 according to the fifth embodiment of the present invention as viewed from the front side in the axial direction. The front lid 11 is in a closed state. FIG. 41 is a cross-sectional view of the dust collector 2 according to the fifth embodiment of the present invention as viewed from above.
図40に示すように、前蓋11の前壁の左側に、前蓋11の前壁を貫通する貫通孔105を形成する。貫通孔105は、前蓋11の左側のうちパッキング受け面76とパッキング受け面77との間に形成される。貫通孔105の直径は、3.4mm程度である。貫通孔105が大きすぎると、掃除機本体1の吸込仕事率(吸引力)が低下し、貫通孔105が小さすぎると、貫通孔105から適量の外気を取り込めない。貫通孔105の流路面積は、掃除機本体1の吸込仕事率(吸引力)との関係で決定するのが好ましい。図41に示すように、貫通孔105は、前蓋11の外部(大気)と連通する。つまり、貫通孔105は、前蓋11の前壁を貫通し、外側流路35には連通しない前蓋11の内側に開口する。外側流路35には連通しない前蓋11の内側は、前蓋11の側壁と後壁との間の隙間から、外部に連通する。図41に示すように、塵埃分離部4と塵埃収容部5とが結合(装着)された状態では、貫通孔105は、リップ68とリップ69との間の空間に開口する。前蓋11の前壁の左側は、外側流路35の内筒7の出口端では流れ62の下流側に位置する。
As shown in FIG. 40, a through hole 105 that penetrates the front wall of the front lid 11 is formed on the left side of the front wall of the front lid 11. The through hole 105 is formed between the packing receiving surface 76 and the packing receiving surface 77 on the left side of the front lid 11. The diameter of the through hole 105 is about 3.4 mm. If the through hole 105 is too large, the suction power (suction force) of the cleaner body 1 is reduced, and if the through hole 105 is too small, an appropriate amount of outside air cannot be taken from the through hole 105. The flow passage area of the through hole 105 is preferably determined in relation to the suction power (suction force) of the cleaner body 1. As shown in FIG. 41, the through hole 105 communicates with the outside (atmosphere) of the front lid 11. That is, the through-hole 105 passes through the front wall of the front lid 11 and opens inside the front lid 11 that does not communicate with the outer flow path 35. The inside of the front lid 11 that does not communicate with the outer flow path 35 communicates with the outside through a gap between the side wall and the rear wall of the front lid 11. As shown in FIG. 41, the through hole 105 opens in a space between the lip 68 and the lip 69 in a state where the dust separation unit 4 and the dust container 5 are coupled (attached). The left side of the front wall of the front lid 11 is located downstream of the flow 62 at the outlet end of the inner cylinder 7 of the outer flow path 35.
そして、図41に示すように、電動送風機28が作動して吸引力が発生すると、リップ68とリップ69との間の空間が負圧となり、外気の流れ106が、外部から前蓋11の側壁と後壁との間の隙間を通って外側流路35には連通しない前蓋11の内側に流入し、前蓋11の前壁の貫通孔105を通って、リップ68とリップ69との間の空間に流入する。そして、外気の流れ106は、外側流路35の終端の内周側の部分100を通って、流れ62に合流し、外側流路35に流入する。つまり、図13では、流れ62は、外側流路35の内筒7の出口端から、外側流路35の終端の内周側の部分100を通って、リップ68とリップ69との間の空間に流入するのではなく、リップ68とリップ69との間の空間から外側流路35の終端の内周側の部分100を通って外側流路35の内筒7の出口端に流入してきた外気と合流することとなる。よって、この貫通孔105により、流れ62に含まれる塵埃が外側流路35の終端の内周側の部分100に引っかかるのを抑制することができる。尚、貫通孔105の位置や形状は、上記に限定されるものではなく、外側流路35の内筒7の出口端で流れ62の下流側のリップ68とリップ69との間の空間と外部とを連通するものであればよい。例えば、貫通孔105やスリットを、リップ68に形成してもよい。
As shown in FIG. 41, when the electric blower 28 is actuated to generate a suction force, the space between the lip 68 and the lip 69 becomes negative pressure, and the outside air flow 106 flows from the outside to the side wall of the front lid 11. Between the lip 68 and the lip 69 through the through hole 105 in the front wall of the front lid 11 through the gap between the lip 68 and the rear wall. Flows into the space. Then, the outside air flow 106 passes through the inner peripheral portion 100 at the end of the outer flow path 35, merges with the flow 62, and flows into the outer flow path 35. That is, in FIG. 13, the flow 62 flows from the outlet end of the inner cylinder 7 of the outer flow path 35 through the inner peripheral portion 100 at the end of the outer flow path 35 to the space between the lip 68 and the lip 69. Outside air that has flowed into the outlet end of the inner cylinder 7 of the outer flow path 35 from the space between the lip 68 and the lip 69 through the inner peripheral portion 100 at the end of the outer flow path 35. Will join. Therefore, the through-hole 105 can suppress the dust contained in the flow 62 from being caught on the inner peripheral portion 100 at the end of the outer flow path 35. The position and shape of the through-hole 105 are not limited to the above, and the space between the lip 68 and the lip 69 on the downstream side of the flow 62 at the outlet end of the inner cylinder 7 of the outer flow path 35 and the outside As long as they communicate with each other. For example, a through hole 105 or a slit may be formed in the lip 68.