JP3542264B2 - Suction port for vacuum cleaner and vacuum cleaner having the same - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an air circulation type vacuum cleaner and a suction port provided in the vacuum cleaner.
[0002]
[Prior art]
The air circulation type vacuum cleaner sucks air from the suction port of the suction opening body by the operation of the electric blower, captures dust by passing the sucked air through a filter, passes through the filter, and is discharged from the electric blower. Returning the returned air to the intake port, the returned air is collected from the intake port and cleaned while circulating the air, which is known in Japanese Patent Application Laid-Open No. 3-162814. In FIG. 2 and page 7, upper left column, line 8 to page 5, line 5 of the publication, the air blower is rotated by utilizing the energy of the air (exhausted air) discharged from the electric blower and returned to the intake port. Describes a suction opening body incorporating a rotary cleaning body.
[0003]
The suction port body is provided in communication with a return air pipe (that is, an exhaust air path) that communicates with an exhaust port of the electric blower, and a suction air pipe (that is, an intake air path) that is separated from the return air pipe by a partition plate. And has an opening in the lower surface. The opening is divided into a front opening and a rear opening communicating with each other by a curved front end of the partition plate, and the rear opening is used as an intake port connected to the suction trachea. A rotary cleaning body chamber is provided inside the suction opening body, the lower end of which is connected to the front opening, and the upper part of which is connected to the recirculation trachea. The rotary cleaning body is accommodated therein. This cleaning body includes a cylindrical rotary body having cutouts at several places on the peripheral surface, and a valve blade provided at each cutout and freely rotating around an axis parallel to the axis of the rotary body. .
[0004]
These valve blades are caused to flow out of the rotating body so as to close the space between the rotating body and the outer refluxing trachea by the reflux of the air guided to the reflux trachea. As a result, the rotating body is driven, so that the valve blade collides with the floor surface (the surface to be cleaned) at the front opening and strikes the floor surface, and the exhaust air driving the rotating body is discharged to the floor surface. It is sprayed from above at an almost vertical angle or a diagonal angle close to it.
[0005]
Therefore, the dust released from the floor surface by the blow of the valve blades and the air blown to the floor surface is sucked into the suction air pipe together with the air flowing from the front opening to the rear opening (intake port). Further, each valve blade is accommodated in the notch along with the beating, and is returned to the airflow of the return trachea again.
[0006]
[Problems to be solved by the invention]
In the configuration in which the return air is blown at a substantially vertical or oblique angle to the surface to be cleaned through the opening of the bottom wall of the suction opening body as described above, it is necessary to release dust from the surface to be cleaned by the blowing air flow. Advantageously, turbulence is generated by the wind colliding with the surface to be cleaned, and a portion of the air circulating through the gap between the surface to be cleaned and the bottom wall of the suction opening body is likely to leak to the outside. . Therefore, especially on a surface to be cleaned having a high degree of flatness such as a wooden floor, the light dust is blown off by the wind leaking to the outside in accordance with the movement of the suction opening body, and the suction is performed. There is a problem that is difficult.
[0007]
In order to prevent such a problem, Japanese Unexamined Patent Publication No. 61-2821 discloses a method of attaching a brush bristle or a rubber lip which is easily elastically deformed to a peripheral portion of a bottom wall of a suction opening body. Particularly, FIGS. 1 to 3) and Japanese Utility Model Laid-Open Publication No. 51-154065 (especially, FIGS. 1 and 2) are proposed.
[0008]
However, in these proposed structures, the air blown out from the gap can be stopped, but on the contrary, when the suction opening is moved along the surface to be cleaned, the brush bristles and lip Because the windproof means pushes and moves the dust on the surface to be cleaned, there is a problem that it is difficult to easily suck and clean the dust on the surface to be cleaned.
[0009]
Accordingly, a first problem to be solved by the present invention is to provide a suction port for an air circulation type vacuum cleaner capable of improving the suction performance of dust on a surface to be cleaned and a vacuum cleaner having the same. is there.
[0010]
[Means for Solving the Problems]
According to the first aspect of the present invention, the air sucked by the operation of the electric blower in the cleaner body is passed through a filter to capture dust, and the air discharged from the electric blower through the filter is collected and circulated. The suction port that is provided in the vacuum cleaner that cleans and faces the surface to be cleanedThe main body of the suction port has a cleaning blade that scrapes out dust on the surface to be cleaned, and the air that is discharged from the electric blower and returned to the main body of the suction port. The rotating cleaning body rotated by the built-in, is moved along the surface to be cleaned and theIt is assumed that the suction port body sucks the air through the suction port.
[0011]
In order to solve the first problem, the invention according to claim 1 includes a seal roller extending in a direction orthogonal to the moving direction and rotatable in contact with the surface to be cleaned.Outside andIt is characterized in that it is arranged at least on the front side of the front side or the rear side and is attached over substantially the entire width.
[0012]
The suction opening body according to the first aspect of the present invention is used in communication with the cleaner main body, and in this use, the air discharged from the electric blower in the cleaner main body is returned to the suction opening, and the air is discharged from the suction opening. Air is sucked into the electric blower, and the air is circulated. Therefore, along with the air circulation, dust on the surface to be cleaned can be sucked into the suction port through the air inlet facing the surface to be cleaned and cleaned.
[0013]
At the time of this cleaning, the suction port body is moved along the surface to be cleaned while being pushed and pulled. In this case, since the seal roller is in contact with the surface to be cleaned and rotates according to the moving direction of the suction port body, the dust can be easily overcome without pushing and moving small dust on the surface to be cleaned. The seal roller does not hinder the suction of the dust from the air inlet. As described above, the seal roller in contact with the surface to be cleaned acts as a windbreak wall at least at the front side in the moving direction of the suction port body between the surface to be cleaned and the bottom wall of the suction port body. This prevents the part of the circulating air passing through the intake port from leaking to the front side in the moving direction of the suction port body through the gap by the seal roller, so that the dust on the front side in the moving direction of the suction port body is blown off. Can be prevented.
In order to solve the first problem, the invention according to claim 2 is configured such that air sucked by an operation of an electric blower in a cleaner body is passed through a filter to capture dust, and the dust is passed through the filter. The vacuum cleaner is provided in a vacuum cleaner for cleaning while collecting and circulating air discharged from the electric blower, and includes a main body of a suction port having a suction port facing a surface to be cleaned. A suction opening body that incorporates a rotary cleaning body having a cleaning blade that scrapes out dust on the surface to be cleaned and is moved along the surface to be cleaned and sucks the air through the air intake port; A suction roller extending in a direction perpendicular to the surface to be cleaned and rotatable in contact with the surface to be cleaned, and protruding from the front surface of the main portion of the suction port body, outside the suction port and on the front side. Arranged to, and attached over substantially the entire width, it is characterized in that the outer peripheral portion of the seal roller is formed of a flexible material.
[0014]
Claim 1 or 2In practicing the invention ofClaim 1 or 2Subordinate to the invention ofClaim 3It is preferable to provide a plurality of ridges and valleys extending continuously along the axial direction on the outer periphery of the seal roller as in the invention of the fourth aspect.
[0015]
thisClaim 3In the invention of the above, since a concave stripe is formed between adjacent convex stripes, when the seal roller gets over small dust on the surface to be cleaned, it is less likely to get on the dust, and the function as the windproof wall is reduced. In addition to being more complete, the seal roller rotates while receiving the dust in the concave streak, so that the dust can easily pass over and rotate. In addition, since the seal roller rotates while making contact with the ridge on the surface to be cleaned, the gripping force of the surface to be cleaned is large, and the surface can be rotated more easily. The body can be prevented from being moved.
Further, in carrying out any one of the inventions of claims 1 to 3, as in the invention of claim 4, the bottom wall of the main part of the suction port body in which the suction port is formed is formed with the bottom of the suction port as a boundary. A front bottom wall positioned in front of the suction port main body, and a rear bottom positioned at the same height as the front bottom wall and positioned rearward of the main body of the suction port with the intake port as a boundary. And a width of the rear bottom wall along the front-rear direction may be larger than a width of the front bottom wall along the front-rear direction.
[0016]
or,Claim 5The invention has a suction port body which is moved along the surface to be cleaned and has a suction port opposed to the surface to be cleaned, and the air sucked from the suction port by the operation of the electric blower in the cleaner body. It presupposes a vacuum cleaner that catches dust through a filter, returns air discharged from the electric blower through the filter to the intake port, and collects and returns the returned air for cleaning while circulating. I do.
[0017]
And, in order to solve the first problem,Claim 5The invention isThe suction port body is the suction port body according to any one of claims 1 to 4.Features.
[0018]
thisClaim 5According to the invention,The method according to any one of claims 1 to 4,Since the same suction port body as the invention is provided and the air circulation type cleaning is performed, when cleaning while moving the suction port body along the surface to be cleaned, the seal roller contacts the surface to be cleaned and the suction port body. Rotating in accordance with the moving direction of the dust, the small dust on the surface to be cleaned can be easily overcome without pushing and moving the dust, so that the seal roller hinders the suction of the dust from the air inlet. There is no. As described above, the seal roller that comes into contact with the surface to be cleaned acts as a windbreak wall at least between the surface to be cleaned and the bottom wall of the suction opening body at the front side in the moving direction of the suction opening body. A portion of the circulating air passing through the gap can be prevented from leaking to the front side in the moving direction of the suction port body by the seal roller, and therefore, it is possible to prevent the dust on the front side in the moving direction of the suction port body from being blown off. It can be cleaned while cleaning.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
[0020]
The vacuum cleaner main body denoted by reference numeral 21 in FIGS. 1, 2 and 4 is formed by connecting an upper case 22 and a lower case 23 made of synthetic resin with screws or the like. As shown in FIG. 3, in the cleaner main body 21, an outer accommodating portion 24 having a substantially U shape in this figure and an inner accommodating portion 25 inside the outer accommodating portion 25 are partitioned by a U-shaped partition wall 26. One end of the partition wall 26 protrudes upward in FIG. 3, and an operation handle 27 is protruded from a wall at the tip thereof. As shown in FIG. 1, the upper case 22 is provided with a pair of cutouts 22a and cutouts 22b, and a longer cutout 22a exposes a part of the outer housing portion 24 and a shorter cutout 22a. A part of the outer housing portion 24 is exposed by the notch 22b. These exposed portions are provided on both sides of the central axis of the cleaner body 21.
[0021]
A communication pipe 28 is provided at the front end of the cleaner body 21 opposite to the rear end where the handle 27 protrudes. The communication pipe 28 is made of a synthetic resin molded separately from the cleaner body 21, and includes a first communication pipe section 28a and a second communication pipe section 28b partitioned by a partition wall 28c as shown in FIG. And has a substantially Y-shape. The communication pipe 28 has one end of the first communication pipe 28a and the other end of the second communication pipe 28b that are parallel to each other protruding from the cleaner body 21, and the first communication pipe 28a and the second communication pipe 28b are opposite to each other. The other end bent in the direction is inserted into the outer housing portion 24 and attached.
[0022]
As shown in FIGS. 3 and 4, the electric blower 31 and the cord reel 32 are respectively housed in the inner housing 25, and a dust collection chamber 33 is provided. The electric blower 31 is arranged closer to the communication pipe 28 side, the code reel 32 is arranged closer to the handle 27 side, and the dust collecting chamber 33 is arranged between the electric blower 31 and the code reel 32. . Therefore, the communication pipe 28, the electric blower 31, the dust collecting chamber 33, and the code reel 32 are provided in the stated order in the longitudinal direction of the cleaner body 21 in this order.
[0023]
As shown in FIG. 5, the electric blower 31 has a blower fan 42, a cooling fan 43, a fan cover 44, an internal fan cover 45, a fan cover 46, an exhaust port 47, a cooling valve 48, and the like attached to a motor section 41. Is formed.
[0024]
In other words, the electric motor unit 41 has a metal electric motor frame 53 composed of a bottomed cylindrical frame main body 51 having one end opened and a disc-shaped frame end plate 52 provided with the opening of the frame main body 51 closed. In addition to housing a stator 54, an armature 55 is housed inside the stator 54, and its rotating shaft 55a is rotatably supported on the motor frame 53 via bearings 56 and 57, and the frame body 51 And a pair of brush devices 58 penetrating therethrough. The tip of the brush 58a of the brush device 58 is elastically pressed against the outer peripheral surface of the commutator 55b of the armature 55. A plurality of cooling air holes 59 (only one is shown) are formed in the bottom wall of the frame body 51. The opening edge 51a of the frame body 51 has a larger diameter than the frame end plate 52, and an exhaust hole 60 is formed in at least one portion of the opening edge 51a.
[0025]
Both ends of the rotating shaft 55a pass through both the bearing 56 and the bearing 57, and the blower fan 42 is attached to one end passing through the bearing 56 so as to rotate integrally with the armature 55. The cooling fan 43 is attached to the other end of the rotating shaft 55 a penetrating the bearing 56 so as to rotate integrally with the armature 55. A metal fan cover 44 is fitted and attached to the opening edge 51a so as not to block the exhaust hole 60, and the fan cover 44 is opposed to the central portion in close proximity to the inlet of the cooling fan 43. It has an air inlet 44a. An internal fan cover 45 made of a synthetic resin is screwed to the outer surface of the frame end plate 52 and is provided so as to cover the blower fan 42 from the frame end plate 52 side. The tip of the peripheral wall of the internal fan cover 45 facing the outlet of the blower fan 42 is in contact with the inner surface of the fan cover 44, and a plurality of through holes 61 are formed in the bottom plate of the internal fan cover 45. . Therefore, the air sucked in from the air inlet 44 a by the rotation of the blower fan 42 is changed direction along the inner surface of the internal fan cover 45 through the fan cover 44 and flows out from the through-hole 61, and then flows into the internal fan cover 45. The air passes through the space between the frame end plate 52 and the exhaust hole 60 and is discharged to the outside of the motor frame 53.
[0026]
The fan cover 46 made of synthetic resin covers the cooling fan 43 so as not to block the cooling air hole 59 and is fitted and attached to the bottom outer surface of the frame body 51. The fan cover 46 has a cooling air inlet 62 facing the cooling fan 43 at the center. A cooling air outlet 63 is opened on the side of the blower fan 42 of the frame main body 51. Therefore, the air sucked in from the cooling air inlet 62 by the rotation of the cooling fan 43 flows into the motor frame 53 through the cooling fan 43, flows through the motor frame 53, and cools the stator 54 and the like after air cooling. The air is discharged to the outside of the motor frame 53 through the air outlet 63. Further, as shown in FIGS. 2 and 3, for example, a lower case 23 of the cleaner body 21 is provided with a cooling air inlet 64 communicating with a cooling air inlet 62. The cooling air intake 64 includes a plurality of slit-shaped holes. The communication path from the cooling air intake 64 to the cooling air inlet 62 is separated from other parts in the cleaner main body 21 by a partition wall or the like provided in the cleaner main body 21.
[0027]
The exhaust port body 47 is provided so as to surround a portion of the electric motor frame 53 on the side of the blower fan 42. The exhaust port body 47 is provided with an exhaust port 65 communicating with the exhaust hole 60. A cooling exhaust port 66 is provided which is separated from the exhaust port 65 and communicates with the cooling air outlet 63. A conduit 67 is connected to the cooling exhaust port 66, and the cooling valve 48 is attached to an end of the conduit 67. As shown in FIG. 3, the distal end of the conduit 67 communicates both the electric blower 31 and the dust collection chamber 33 and communicates with the suction gap 68 provided therebetween. As shown in FIG. 5, the cooling valve 48 is a leaf valve provided with a small hole 48a in the center of the rubber plate. When the negative pressure in the suction gap 68 is small, the opening at the tip of the conduit 67 is closed, and When the negative pressure in the suction gap 68 increases, the suction gap 68 is elastically deformed to open the end opening of the conduit 67 to increase the amount of cooling air. In FIG. 5 and the like, reference numeral 69 denotes a rubber vibration-proof packing fitted on the outer periphery of the fan cover 44.
[0028]
The exhaust port 65 of the electric motor section 41 and the second communication pipe section 28b of the communication pipe 28 are connected via an exhaust passage 71 in the main body. The main body exhaust air path 71 includes an elbow-shaped exhaust pipe 72 connected to the exhaust port 65, a flexible and extendable exhaust hose 73 having one end connected to the exhaust pipe 72, And a joint pipe 74 detachably fitted to the second communication pipe portion 28b. The exhaust air passage 71 in the main body is accommodated in the outer accommodating portion 24 with most of the exhaust hose 73 exposed from the notch 22b. Therefore, by utilizing the expansion and contraction performance of the exhaust hose 73, the joint pipe 74 can be pulled out from the notch 22b by pulling the joint pipe 74 in a direction to shorten the length as necessary. Thereby, the air discharged from the joint pipe 74 directly or through a blower attachment (not shown) connected as necessary can be used as a blower.
[0029]
The cord reel 32 is used to supply power to the electric blower 31. As shown in FIGS. 3 and 4, a power supply cord 81, a rotatable reel body 82 around which the power supply cord 81 is wound, and a reel body 82 , And a slip ring (not shown). The spiral spring 83 is wound and tightened when the power supply cord 81 is pulled out, and stores the spring force. When the lock release button 84 is pressed, the stored spring force is released and the drawn power supply cord 81 is wound up. ing.
[0030]
A first filter 85 made of a paper pack is detachably accommodated in the dust collection chamber 33, and a second filter 86 having a flat plate shape facing the suction gap 68 is attached. The mesh of the second filter 86, which is not always necessary, is coarser than the mesh of the first filter 85. The first filter 85 is configured to be detachable from the dust collection chamber 33 by removing the openable and closable lid 87 attached to the upper case 22. As shown in FIG. 4, an opening 85b which is opened and closed by a seal valve made of a thin rubber plate (not shown) is provided in a mouth frame 85a of the filter 85. A dust suction port 88 (see FIG. 3) communicating with the inside of the filter 85 and the opening 85b is connected to a side wall of the dust collection chamber 33 in which the mouth frame 85a is set.
[0031]
As shown in FIG. 3, the dust suction port 88 and the first communication pipe portion 28 a of the communication pipe 28 are connected via a main body intake air passage 89. The main body intake air passage 89 includes an intake pipe 90 connected to the dust suction port 88, a flexible and extendable intake hose 91 having one end connected to the intake pipe 90, And a joint pipe 92 connected to the end and detachably fitted to the first communication pipe section 28a. The intake air passage 89 in the main body is accommodated in the outer accommodating portion 24 by exposing a portion of the intake hose 91 on the joint pipe 92 side from the notch 22a. Therefore, by utilizing the expansion and contraction performance of the intake hose 91, the joint pipe 92 can be pulled out from the first communication pipe portion 28a by pulling the joint pipe 92 in a direction to shorten the length as necessary, and can be pulled out from the notch 22a. Thereby, air can be sucked directly from the joint pipe 92 or through a suction attachment (not shown) connected as necessary.
[0032]
A suction port body 101 made of a synthetic resin communicates with the communication pipe 28. As shown in FIGS. 3, 6 to 9, and the like, the suction port body 101 includes a connection pipe 102, a suction port body main portion 103, a rotary cleaning body 104, a main portion exhaust air passage 105, and a main portion inside. An intake air passage 106 and the like are provided. Hereinafter, these configurations will be described.
[0033]
As shown in FIG. 3, the connecting pipe 102 has a first connecting pipe section 112 and a second connecting pipe section 113 partitioned by a partition wall 111 and has a substantially Y-shape. The connection pipe 102 has one end of the first connection pipe 112 and one end of the second connection pipe 113 parallel to each other fitted into the inside of the communication pipe 28, and screws the connection flange 28d and the connection flange 102a. By doing so, it is attached to the communication pipe 28. In this connection, the partition wall 111 is also fitted to the partition wall 28c. By the above connection, the first communication pipe 28a and the first connection pipe 112 are connected to each other, and the second communication pipe 28b and the second connection pipe 113 are connected to each other. The cylindrical projections 112a, 113a of the two connection pipes 112, 113 projecting in the opposite direction at an interval of 180 ° are located on the same axis, and the outer circumferences of the distal ends of these projections 112a, 113a are respectively provided. The retaining flanges 112af and 113af (see FIG. 6) which are continuous in the circumferential direction are provided.
[0034]
As shown in FIGS. 6 to 9, the suction port main body 103 is formed by connecting the main upper body 121 and the main lower body 122 with screws or the like. A recess 103a is formed in the center of the rear side of the main portion 103 and opens to both the upper and lower surfaces and the rear surface. Circular connection holes 123 are provided in parallel side walls of the recess 103a. These connection holes 123 are formed by fitting the semicircular grooves provided in the two cases 121 and 122, and the step portions 123a on which the retaining flanges 112af and 113af are hooked from the inside of the main body 103 of the suction opening body. (See FIGS. 7 and 8). The projecting portions 112a and 113a of the connection pipe 102 are individually fitted and attached to the connection holes 123. Thus, the connection pipe 102 is rotatably connected to the suction port main part 103 so that the connection pipes 123 can be turned upside down as bearings, and the connection pipe parts 112 and 113 of the connection pipe 102 are individually separated. The inside of the suction port main body 103 is communicated with.
[0035]
A rotary cleaning body chamber 125 is formed inside the front part of the suction port main body 103 by the rib-like walls protruding into the upper and lower bodies 121 and 122 and the air guide 124. A rectangular suction port 126 is formed on the bottom wall 122a of the suction port main body 103 so as to face the cleaning body chamber 125. The rotary cleaning body chamber 125 and the suction port 126 extend in the width direction of the suction port main body 103. As shown in FIGS. 9 and 10 and the like, the bottom wall 122a has a front bottom wall portion 122af located in front of the inlet body main portion 103 with the intake port 126 as a boundary, and a suction port with the intake port 126 as a boundary. There is a rear bottom wall portion 122ab located on the rear side (on the connection pipe 102 side) of the main body portion 103, and these are formed of horizontal walls having the same height. The width A of the rear bottom wall portion 122ab is larger than the width B of the front bottom wall portion 122af.
[0036]
The rotary cleaning member chamber 125 contains the rotary cleaning member 104. The rotary cleaning body 104 is mounted by rotatably supporting shaft portions (see FIG. 3) protruding at both ends in the longitudinal direction between upper and lower rib-shaped bearing walls 127 partitioning both longitudinal ends of the rotary cleaning body chamber 125. Have been. A number of rubber cleaning blades 104a provided on the peripheral surface of the rotary cleaning body 104 are provided in parallel with each other. When each blade 104a is provided while being twisted in the circumferential direction instead of being parallel to the longitudinal direction of the rotary cleaning body 104, the cleaning blades provided so as to be twisted in opposite directions to each other are provided at the center in the longitudinal direction of the rotary cleaning body 104. It may be provided so as to form a V-shape. Thereby, the force given to the rotary cleaning body 104 in accordance with the discharge air to be described later can be equalized on both longitudinal sides of the rotary cleaning body 104. When the lower end of the cleaning blade 104a is positioned at the center in the width direction of the air inlet 126, the cleaning blade 104a projects from the air inlet 126 and strikes the surface to be cleaned C (see FIG. 9) while being elastically deformed. ing.
[0037]
Necessary air guide walls are provided at various places in the suction port main body 103. As a result, in the main body 103 of the suction opening, the main intake air passage 106 that communicates the rotary cleaning body chamber 125 with the first connection pipe 112 and the main intake air passage 106 are partitioned. The exhaust air passage 105 in the main part, which communicates between the rotary cleaning body chamber 125 and the second connection pipe part 113, is formed respectively.
[0038]
The main-unit exhaust air passage 105 is formed between the upper and lower bodies 121 and 122 and has an exhaust air passage chamber 105a into which the protruding portion of the second connection pipe portion 113 is inserted, and as shown in FIG. The upper body 121 has a relay exhaust air passage portion 105b extending in the longitudinal direction and formed in a rectangular cylindrical shape, and an exhaust air passage portion 105c formed at a front portion of the suction port main body 103.
[0039]
As shown in FIG. 7, one end in the longitudinal direction of the relay exhaust air passage portion 105b is opened to communicate with the exhaust air passage chamber 105a, and the other end in the longitudinal direction is closed. A communication hole 129 (see FIG. 6) through which the air passage portions 105b and 105c communicate with the air guide wall 128 of the main body upper body 121 which also serves as a partition separating the relay exhaust air passage portion 105b and the exhaust air passage portion 105c. ) Is provided. The communication hole 129 is formed to extend in the width direction of the suction port main portion 103 in a slender manner. An upward slope 105a1 is provided on the bottom surface of the exhaust air passage chamber 105a so as to smoothly direct the air (exhaust) discharged from the second connection pipe portion 113 to the opening of the relay exhaust air passage portion 105b.
[0040]
As shown in FIG. 9, a synthetic resin air guide 124 is provided integrally with a first guide plate 130 provided in the main body upper body 121 and the main body lower body 122 continuously with the guide plate 130. And the second guide plate 131. The first guide plate 130 is curved along the outer periphery of the upper portion of the rotary cleaning body 104 to form a curved upper passage between the first guide plate 130 and the inner surface of the main body upper body 121. The rear edge of the first guide plate 130 in the width direction is adhered to the air guide wall 128, and both air passages 105 and 106 are closed so that the main supply / exhaust air passages 105 and 106 are not communicated on the wind guide wall 128 side. , 106 are defined. The second guide plate 131 is provided integrally with the front surface of the main body lower body 122 at the longitudinal center rear surface thereof, and the upper end opening (entrance) of the lower passage formed inside thereof is continuous with the curved upper passage. In addition, an outlet opened at the lower end of the lower passage is communicated with the longitudinal central portion of the rotary cleaning body chamber 125.
[0041]
The outlet forming the spout 132 on one side in the width direction of the inlet 126, for example, the front side is formed in a slot shape between the front bottom wall portion 122af and elongated in the width direction of the inlet body main portion 103. Is blown rearward along the surface C to be cleaned, and the air is blown to the lower end of the cleaning blade 104a of the rotary cleaning body 104. The blast port 132 is formed so as to protrude toward the intake port 126, for example. In order to realize this protruding structure, a wind guide protruding wall 133 protruding toward the air inlet 126 is formed at a lower edge of the second guide plate 131. The wind guide protruding wall 133 is parallel to the front bottom wall portion 122af.
[0042]
As shown in FIG. 3 and the like, the main body intake air passage 106 extends in the longitudinal direction of the air guide wall 134 of the main body lower body 122 which also serves as a partition partitioning the rotary cleaning body chamber 125 continuously with the air guide wall 128 (suction). It has a suction opening 135 provided by cutting out the central part (width direction of the mouth main part 103). The intake air passage 106 communicates with the first connection pipe 112 inserted at the rear. The suction opening 135 is provided on the side of the rear bottom wall portion 122ab, and at least a lower portion thereof is provided at a position substantially equal to the height of the jet port 132.
[0043]
As shown in FIGS. 8 to 10 and the like, a seal roller 141 is rotatably provided on the main body 103 of the suction port body at a position forward of the suction port 126 with both ends thereof being pivotally supported. . The seal roller 141 extends in the width direction of the suction port body main part 103, in other words, orthogonally to the moving direction of the suction port body 101, is longer than the suction port 126, andSuction port main partIt has a length of approximately 103 across the entire width. A part of the outer periphery of the seal roller 141 projects slightly from at least the lower surface or the lower surface of the main body lower body 122.
[0044]
The seal roller 141 has a plurality of ridges 142 continuously extending along the axial direction on the outer periphery thereof and a ridge 143 formed between the ridges 142. In the first embodiment, each of the convex ridges 142 and the concave ridges 143 are provided so as to extend in parallel with the axial direction. A ridge 142 projects from the lower surface of the main lower body 122. The protrusion dimension of the ridge 142 is about 1.5 mm.
[0045]
The outer peripheral portion of the seal roller 141 having the convex ridges 142 and the concave ridges 143 may be formed of a hard material such as a hard synthetic resin, but is preferably made of a flexible material such as rubber. The use of rubber is excellent in that the protrusions 142 can be easily caught on the surface C to be cleaned so that the seal roller 141 can be easily rotated. According to the configuration that slightly protrudes from the front surface of the vehicle, the roller 141 can be used as a shock-absorbing bumper, and is excellent in that damage to the indoor wall surface, furniture, and the like can be reduced.
[0046]
Further, a pair of rear wheels 144 is attached to a rear portion of the suction port main body 103. The lower ends of these wheels 144 protrude slightly (about 1.5 mm) from the lower surface of the main body lower body 122 similarly to the seal roller 141. Therefore, the bottom wall 122a is slightly away from the surface C to be cleaned, and the rotation of the seal roller 141 and the rear wheel 144 allows the suction opening 101 to move smoothly in the front-rear direction.
[0047]
The upright type vacuum cleaner having the above configuration has the handle 27 with the power supply cord 81 drawn from the cord reel 32 connected to the power supply, moves the cleaner body 21 while operating the electric blower 31, and draws the suction port. The body 101 is used for cleaning by moving it along a surface C to be cleaned such as a floor surface.
[0048]
In this cleaning operation, the blower fan 42 and the cooling fan 43 of the electric blower 31 are simultaneously rotated. Therefore, the air containing dust is sucked in from the air inlet 126 of the air inlet 101 by the air suction effect generated by the rotation of the blower fan 42, and the air passes through the main body air intake air passage 106 from inside the rotary cleaning body chamber 125. After passing through the first connection pipe portion 112 on the suction side of the connection pipe 102 and the first communication pipe portion 28 a of the communication pipe 28, the air passes through the air intake passage 89 in the main body to the filter 85 in the dust collection chamber 33. Inhaled. Since the air sucked in the intake path passes through the filter 85, dust contained in the air is captured by the filter 85 at that time.
[0049]
The air that has passed through the filter 85 and the filter 86 immediately behind the filter 85 is sucked into the blower fan 42 through the air inlet 44a of the electric blower 31 via the suction gap 68 immediately behind the filter 86, and flows along the respective blower blades. And is discharged from the outlet of the blower fan 42. The discharged air passes through the exhaust hole 60 and is exhausted to the outside of the motor unit 41 from the exhaust port 65 of the exhaust port body 47. The flow of the air passing through the electric blower 31 is indicated by a solid arrow in FIG.
[0050]
The air thus discharged, that is, the exhaust air from the electric blower 31 passes through the exhaust air passage 71 in the main body, and then the second communication pipe portion 28b of the communication pipe 28 and the second connection pipe on the exhaust side of the connection pipe 102. Since the air is discharged to the exhaust passage 105 in the main part through the portion 113, the air is blown from the blast port 132 of the air passage 105 toward the cleaning blade 104 a of the rotary cleaning body 104 energetically. As a result, the exhaust gas is returned to the intake port 126 and the rotary cleaning body 104 in the rotary cleaning body chamber 125 is rotated by the force, so that the lower end portion of the cleaning blade 104a is opposed to the intake port 126 close to the intake port 126. The surface to be cleaned C is hit so as to hit the surface to be cleaned, and dust on the surface to be cleaned C such as a carpet is scraped out. At the same time, the exhaust gas returned to the intake port 126 as described above is collected and circulated through the above-described intake path having the intake opening 135 of the main-unit intake air passage 106 as an inlet. Due to such air circulation, dust and the like scraped out from the surface to be cleaned C as described above are simultaneously collected in the intake path. The flow of air flowing back through the suction port body 101 is indicated by solid arrows in FIG.
[0051]
As described above, since the exhaust gas is circulated without being discharged to the outside, it is excellent in that dust and the like are not blown to the outside by the exhaust gas. In addition, since the operation sound of the electric blower 31 propagating on the exhaust, specifically, the wind noise generated by the blower fan 42 is extremely small, the noise during use can be significantly reduced. Therefore, this vacuum cleaner is suitable for use under quiet conditions such as in a hospital or at night.
[0052]
Further, the rotary cleaning body 104 is rotated by utilizing the energy of the exhaust gas returned to the intake port 126 as described above, and the dust on the surface to be cleaned C is positively scraped into the rotary cleaning body chamber 125 and collected. Since the air is sucked in from the air inlet 126, the dust collecting performance is also improved. Further, the suction port body 101 is excellent in that the suction port body 101 is hardly attracted to the surface to be cleaned C, and the suction port body 101 can be moved lightly.
[0053]
During the cleaning, the cooling fan 43 is also rotated at the same time, so that the rotation causes the outside air to be sucked in from outside the cleaner body 21 through the cooling air intake 64, and the outside air is drawn into the stator 54 and the electric motor in the motor frame 53. After flowing through the inside of the motor frame 53 while being cooled by air, the air is discharged from the cooling exhaust port 66 and then sucked into the electric blower 31 from the conduit 67 through the suction gap 68. The above air flow is indicated by a dotted arrow in FIG.
[0054]
When the amount of dust accumulated in the filter 85 is small and the airflow resistance in the filter 85 is small during the suction of the outside air as described above, the cooling valve 48 closes the opening at the tip of the conduit 67. Therefore, a small amount of outside air for cooling passing through the small hole 48 a of the cooling valve 48 is sucked into the electric blower 31. In such a state, the cooling fan 43 is cooled mainly by the air sucked into the electric blower 31 through the dust collection chamber 33, and the electric motor unit 41 is cooled by the cooling air flowing in the electric motor frame 53.
[0055]
When the air path resistance in the filter 85 increases with an increase in the amount of dust in the filter 85 and the negative pressure in the dust collection chamber 33 increases, the negative pressure in the suction gap 68 also increases. Therefore, the cooling valve 48 is moved to a position where the tip of the conduit 67 is opened as shown by a two-dot chain line in FIG. Therefore, a large amount of the outside air for cooling is sucked into the electric blower 31, and the introduction of the outside air mainly cools the electric motor section 41 and the blower fan 42 of the electric blower 31. As described above, the introduction amount of the outside air for cooling is controlled by the degree of accumulation of dust in the filter 85, so that the temperature rise of the electric blower 31 can be suppressed regardless of the amount of dust in the filter 85.
[0056]
In the above-described cleaning operation, since the blast port 132 that blows out the air returning to the intake port 126 toward the intake port 126 is not downward but opens rearward as shown in FIG. 9 and the like, The air blown out toward the cleaning blade 104a is directed horizontally along the inner surface of the bottom wall 122a of the suction opening main body 103 facing the surface C to be cleaned so as to be substantially parallel to the surface C to be cleaned. It is blown out. In other words, the air is blown out along the surface to be cleaned C. Then, it is sucked into the suction opening 135 via the cleaning blade 104a.
[0057]
According to the flow of the air around the intake port 126, it is possible to prevent the air from colliding with the surface to be cleaned C so as to generate turbulent flow. Part of the air circulating from the gap between the wall 122a and the wall 122a can be prevented from leaking to the outside.
[0058]
Moreover,FumaroleA part of the air blown out from the outlet 132 tends to leak to the outside from the gap between the surface C to be cleaned and the bottom wall 122a of the suction opening body 101 through the air inlet 126 in the blowout direction. The width A of the rear bottom wall portion 122ab on the side is much larger than the width B of the front bottom wall portion 122af on the upstream side in the blowing direction, so that the air in the gap between the rear bottom wall portion 122ab and the cleaning surface C is large. The resistance can be increased in proportion to the large width A. Therefore, the leakage of air from the gap to the outside can be suppressed to be further reduced by the large air resistance.
[0059]
Further, as described above,Fumarole132 projects along the surface C to be cleaned, for example, toward the suction opening 135.FumaroleThe directivity of the air blown out from 132 is enhanced, and the wind that tries to pass through intake port 126 can be reduced. Moreover, as described above, at least the lower part of the suction opening 135 andFumarole132 is almost the same height,FumaroleThe air blown out from 132 is caused to flow so as to go straight toward suction opening 135, so that the leakage of air from between bottom wall 122a and surface C to be cleaned can be further reduced. In addition, as described above, since the amount of wind passing through the air inlet 126 is extremely small, a larger amount of air can be secured against the cleaning blade 104a.FumaroleThe force (torque) for rotating the rotary cleaning body 104 by the air blown out from the 132 can be further increased. Therefore, it is possible to improve the ability to remove dust from the surface C to be cleaned.
[0060]
By the way, when performing cleaning while circulating air as described above, the suction port body 101 is moved in the front-rear direction along the surface C to be cleaned while being pushed and pulled. When the suction port body 101 is pushed and moved in this movement and moves forward, the seal roller 141 disposed in front of the suction port 126 has its lower end portion in contact with the surface C to be cleaned, and the suction port body 101 moves forward. It is rotated forward. By this rotation, the seal roller 141 easily gets over the small dust (including sand and the like) on the surface to be cleaned C without pushing and moving the dust, so that the seal roller 141 pushes and moves the dust forward. In addition, the seal roller 141 does not hinder the suction of the dust from the air inlet 126.
[0061]
Since the rotating seal roller 141 is in contact with the surface to be cleaned C as described above, the seal roller 141 rotates in the gap between the surface to be cleaned C and the bottom wall 122 a of the suction port 101. The seal roller 141 can be used as a windbreak wall located on the front side in the movement direction. Therefore, it is possible to prevent a part of the circulating air passing through the suction port 126 from leaking to the front side in the moving direction of the suction port body 101 through the gap by the presence of the seal roller 141. No part of the circulating air is blown out in front of the vehicle. Accordingly, light dust on the surface to be cleaned C located in front of the pushed-in suction port body 101 is prevented from being blown off, and the dust is passed over by the seal roller 141 as described above. With the movement of 101, dust located in the front of the moving direction can be reliably sucked.
[0062]
In addition, since the convex ridges 142 and the concave ridges 143 are alternately formed on the outer periphery of the seal roller 141, when the seal roller 141 gets over the small dust on the surface C to be cleaned, it hardly gets on the dust. . Therefore, the formation of a small gap between the surface to be cleaned C and the seal roller 141 corresponding to small dust is also prevented, and the function of the seal roller 141 as a windproof wall is more easily achieved. With the movement of the mouth body 101, dust located in front of the moving direction can be reliably sucked and cleaned without blowing away.
[0063]
Further, since the seal roller 141 rotates while the dust is contained in the recess 143, the dust can be easily passed over and rotated. In addition, since the seal roller 141 rotates while contacting the ridge 142 with the surface C to be cleaned, the gripping force of the surface C to be cleaned is large, and the rotation is easier. Therefore, as the suction roller 101 is reliably prevented from being pushed and moved while the seal roller 141 slips on the surface C to be cleaned, the seal roller 141 can be reliably prevented from moving dust forward.
[0064]
Further, the seal roller 141 is not attached to the rear bottom wall portion 122ab on the rear side of the suction port 126 of the suction port body 101, but the rear portion has already been cleaned by suction from the suction port 126. Even if a part of the circulating air leaks backward, the small amount of dust remaining withoutBe skippedThat's not a problem.
[0065]
The present invention is not limited to the upright type vacuum cleaner shown in the first embodiment, but can be applied to a canister type and other various types of vacuum cleaners. Therefore, even if the suction port body 101 is the suction port body 101 connected to the cleaner main body 21 via a relay pipe such as an extension pipe having an outside air intake path and an outside air path, and a ventilation hose. good.
[0066]
In the present invention, the seal roller 141 may be provided not only on the front side of the intake port 126 but also on the rear side. In the case where the seal rollers 141 are provided on both sides in the width direction of the intake port 126 as described above,Air leaksThis is advantageous in that the dust on the surface to be cleaned can be more easily blown off.
[0067]
Further, when the seal roller 141 has the convex ridges 142 and the concave ridges 143 alternately along the circumferential direction on the outer periphery thereof, the convex ridges 142 and the concave ridges 143 extending over the entire length of the roller 141 are spirally twisted. It may be provided.
[0068]
【The invention's effect】
The present invention is implemented in the form described above, and has the following effects.
[0069]
Claim 5And an air circulation type vacuum cleaner according to the present invention, and the vacuum cleaner includesThe method according to any one of claims 1 to 4.According to the suction port body for a vacuum cleaner according to the invention, a part of the circulating air passing through the suction port leaks from the gap between the surface to be cleaned and the suction port body to the front in the moving direction of the suction port body.ThatA rotatable seal roller is provided to prevent dust from being blown off in front of the suction port in the moving direction, and to prevent small dust on the surface to be cleaned being pushed and moved by the seal roller. Dust on the surface can be easily and reliably sucked through the air inlet, and therefore, the dust suction performance on the surface to be cleaned can be improved.
[0070]
In addition, claim 1 or 2Subordinate to the invention ofClaim 3According to the invention described in the above, and the invention described in any one of the first to third aspects, the function of the seal roller as a windbreak wall is more fully achieved by the ridge and the ridge provided on the outer periphery of the seal roller. The seal roller can be easily rotated and the seal roller can be more easily rotated, so that the seal roller can be prevented from slipping on the surface to be cleaned and pushing small dust on the surface to be cleaned, and can be prevented from being moved. Dust suction performance can be improved.
[Brief description of the drawings]
FIG. 1 is a plan view showing the overall configuration of an air circulation type upright vacuum cleaner having a suction port according to a first embodiment of the present invention.
FIG. 2 is a rear view showing the configuration of the entire vacuum cleaner shown in FIG. 1;
FIG. 3 is a plan view showing the electric vacuum cleaner shown in FIG. 1 in a state in which an upper case is removed and a part of the electric vacuum cleaner is cut away;
FIG. 4 is a vertical side view showing the configuration of the entire vacuum cleaner shown in FIG. 1;
FIG. 5 is a sectional view showing a configuration of an electric blower provided in the electric vacuum cleaner shown in FIG. 1;
FIG. 6 is a perspective view showing a configuration of the suction opening body according to the first embodiment with a part cut away.
FIG. 7 is a bottom view showing a configuration of a main body upper body provided in the suction port shown in FIG. 6;
FIG. 8 is a plan view showing the configuration of a main lower body provided in the suction port shown in FIG. 6;
FIG. 9 is a sectional view showing the configuration of the suction port shown in FIG. 6;
FIG. 10 is a perspective view showing the configuration of a main part of the suction port body provided in the suction port body shown in FIG. 6, as viewed from the lower surface side.
[Explanation of symbols]
21 ... vacuum cleaner body,
31 ... electric blower,
85 ... Filter,
86 ... Filter,
101 ... suction mouth body,
103: main part of the suction body
104: rotating cleaning body,
104a: cleaning blade,
105 ... exhaust air passage in the main part,
106 ... intake air path in the main part,
122a: bottom wall of suction port body
125 ... rotating cleaning body room,
126 ... intake port,
132 ... Fumaroles,
135 ... suction opening,
141 ... seal roller,
142 ... ridge,
143 ... recess,
C: Surface to be cleaned.

Claims (5)

A vacuum cleaner that cleans while sucking air sucked by the operation of the electric blower in the cleaner body through a filter to capture dust, collect air discharged from the electric blower through the filter, and circulate the collected air. A main body having a suction port body having an air inlet opposed to the surface to be cleaned, and a main body of the suction port having a cleaning blade for scraping out dust on the surface to be cleaned and discharged from the electric blower. A suction port body that incorporates a rotary cleaning body that is rotated by the air returned to the suction port body main portion, and that moves along the surface to be cleaned and sucks the air through the suction port;
A seal roller extending in a direction perpendicular to the direction of the movement and rotatable in contact with the surface to be cleaned is arranged outside the intake port and at least on the front side or the rear side, and is attached over substantially the entire width. A suction mouth body for a vacuum cleaner. A vacuum cleaner that cleans while sucking air sucked by the operation of the electric blower in the cleaner body through a filter to capture dust, collect air discharged from the electric blower through the filter, and circulate the collected air. A rotary cleaning body having a suction port body main part having a suction port opposed to the surface to be cleaned, and having a cleaning blade for scraping out dust on the surface to be cleaned in the suction port main part; A suction port body that moves along the surface to be cleaned and suctions the air through the suction port;
A seal roller extending in a direction perpendicular to the direction of the movement and rotatable in contact with the surface to be cleaned is provided. A suction port body for a vacuum cleaner, wherein the suction port body is disposed on the front side, attached over substantially the entire width, and the outer peripheral portion of the seal roller is formed of a flexible material . The suction port body for a vacuum cleaner according to claim 1 or 2, wherein a plurality of ridges and ridges extending continuously along an axial direction of the seal roller are provided on an outer periphery of the seal roller. A bottom wall of the main body of the suction port body in which the suction port is formed is a front bottom wall portion located on the front side of the main body of the suction port body with respect to the suction port, and is flush with the front bottom wall portion. A rear bottom wall portion located on the rear side of the main body of the intake port body with the intake port as a boundary, and the width of the rear bottom wall portion along the front-rear direction is defined as a front bottom wall portion. The suction port body for a vacuum cleaner according to any one of claims 1 to 3, wherein the width is larger than a width along the front-rear direction. A suction port body having an air inlet port that is moved along the surface to be cleaned and has an air inlet facing the surface to be cleaned; and In a vacuum cleaner that captures dust, returns air discharged from the electric blower through the filter to the intake port, and collects and returns the returned air to perform cleaning while circulating.
A vacuum cleaner, wherein the suction opening is the suction opening according to any one of claims 1 to 4.

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