JP2013000437A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner capable of achieving improvement of strength without impairing operability of a manual operating pipe.SOLUTION: A hose 3 is rotatably connected to the manual operating pipe 4 through a rotating pipe 51 and a hose cover 52. A handle 45 arranged at the manual operating pipe 4 has a blocking area R and has a lower face cover 43 constituting a part of the blocking area R at a position opposite to the hose 3. A protrusion 43c that protrudes to a hose 3 side is formed at the lower face cover 43, and a hose cover 52 is configured to abut on the protrusion 43c. The surfaces of the protrusion 43c and the hose cover 52 have arc shapes where they mutually abut on faces.

Description

  The present invention relates to a vacuum cleaner with improved strength.

  Conventionally, a general electric vacuum cleaner has a hand control tube attached to a hose connected to the main body of the vacuum cleaner, and a user performs cleaning while grasping a grip portion provided on the hand control tube. Yes. For example, there has been proposed a vacuum cleaner that is improved in strength and improved in operability by adopting a shape having a closed region in the hand operation tube (see Patent Document 1).

JP 2010-148688 A

  However, in the electric vacuum cleaner described in Patent Document 1, if the user accidentally releases the hand operation tube, the hand operation tube falls to the floor surface, and the lower part of the hose or the hand operation tube (floor) There was a problem that a strong impact was applied to the side close to the surface, leading to breakage.

  This invention makes it a subject to provide the vacuum cleaner which can aim at an intensity | strength improvement, without impairing the operativity of a hand control tube.

  The present invention provides a vacuum cleaner comprising a vacuum cleaner main body and a hand operation tube having one end connected to the vacuum cleaner body via a hose, wherein the hand operation tube is a rear side to which the hose is connected. And a handle having a substantially triangular closed region in a side view, and the handle includes a lower surface cover that constitutes a part of the closed region between the handle and the hose.

  ADVANTAGE OF THE INVENTION According to this invention, the vacuum cleaner which can aim at an intensity | strength improvement is obtained, without impairing the operativity of a hand control tube.

It is an appearance perspective view showing the whole vacuum cleaner concerning one embodiment of the present invention. It is an external appearance side view which shows the hand operation tube of a vacuum cleaner. It is an external appearance perspective view which shows the hand operation tube of a vacuum cleaner. It is a disassembled perspective view which shows the hand operation tube of a vacuum cleaner. It is an external appearance perspective view which shows the lower surface cover single-piece | unit of a hand operation tube. It is an AA expanded sectional view of FIG. It is a longitudinal cross-sectional view which shows the hand operation tube of a vacuum cleaner. It is BB expanded sectional drawing of FIG. It is the exploded sectional view which expanded the rear end part of a hand operation tube. The use condition figure of the vacuum cleaner which concerns on one Embodiment of this invention is shown, (a) is a 1st use condition, (b) is a 2nd use condition.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the following description, the front-rear direction refers to the upstream side of the air sucked by the cleaner body 2 with respect to the cleaner body 2, and the downstream side as the rear side. Moreover, the front-back and up-down directions in the hand control tube 4 constituting the vacuum cleaner 1 according to the present embodiment represent the front side (upstream side) on the left and the rear side (downstream side) on the right in the state shown in FIG. In the state shown in FIG. 2, the upper side is the upper side and the lower side is the lower side.

  As shown in FIG. 1, the vacuum cleaner 1 of the present embodiment includes a cleaner body 2, a hose 3, a hand operation tube 4, an extension tube 5, and a suction port 6.

  The vacuum cleaner main body 2 includes an electric blower (not shown) that generates a suction force, a dust collection unit (not shown) that stores dust collected by the suction force of the electric blower, and the like. When sucking the dust accumulated on the surface to be cleaned (floor surface, etc.), the dust is sucked from the suction port 6, passes through the extension pipe 5, passes through the inside of the hand control pipe 4, and is cleaned through the hose 3. Dust is collected in the machine body 2.

  The hose 3 has a flexible surface with a bellows-like surface, and has an upstream end rotatably connected to the hand control tube 4 and a downstream end attached to and detached from the cleaner body 2. Connected freely.

  The extension pipe 5 is configured by connecting an outer pipe 5a and an inner pipe 5b, and has a stretchable structure whose length can be freely adjusted so that the user can easily use it. Further, the extension pipe 5 has a lock release button 5c for releasing the engagement state between the outer pipe 5a and the inner pipe 5b when expanding and contracting.

  The suction port 6 is, for example, a case 6a that accommodates a rotary brush (not shown) that contacts a surface to be cleaned (floor surface, etc.), is rotatably connected to the case 6a, and is detachably connected to the extension pipe 5. It is comprised by the pipe part 6b etc. which are made. The tube portion 6b is connected to the case 6a so as to be rotatable to an angle parallel to the surface to be cleaned.

  As shown in FIG. 2, the hand control tube 4 includes a connection portion 4 a connected to the extension tube 5 (see FIG. 1), and a handle 45 having a grip portion 44 that is gripped by a user's hand. For example, as shown in the figure, the user performs cleaning while holding the grip 44 with his / her hand. Moreover, the handle | steering-wheel 45 is comprised so that it may have the substantially triangular (saber shape) obstruction | occlusion area | region R in side view. In the present embodiment, in the portion of the handle 45 constituting the closed region R, the portion (the highest position) farthest in the direction orthogonal to the axial direction of the hose 3 is the apex portion T (substantially apex portion). Equivalent to. Moreover, since the vertex part T is a part to be operated by grasping with a finger, it is preferable to configure the apex part T with a width in the front-rear direction instead of a point.

  The handle 45 is provided with a movable trigger 49 protruding into the closed region R. The movable trigger 49 is supported by the handle 45 so as to be slidable substantially in the front-rear direction, and the user holds the grip portion 44. In this state, by engaging the index finger and pulling the movable trigger 49 backward, the engagement state of the lock release button 5c (see FIG. 1) is released as a predetermined operation. For example, the user can extend and contract the extension tube 5 by operating the movable trigger 49 while holding the suction port 6 with his / her foot. Therefore, the user does not need to operate the lock release button 5c (see FIG. 1) by lifting the extension pipe 5 (see FIG. 1) or the like. Note that the movable trigger 49 returns to the initial state by releasing the finger from the movable trigger 49. Therefore, the user does not accidentally operate the movable trigger 49 when holding the grip portion 44 and operating the hand control tube 4, and the hand does not leave the grip portion 44, and the extension tube 5 can be expanded and contracted with peace of mind. Operation is possible.

  The predetermined operation by the operation of the movable trigger 49 is not limited to the unlocking operation of the lock release button 5c, but may be unlocking of the extension pipe 5 and the suction port 6, or the hand control pipe 4 and The lock with the extension pipe 5 may be released, and various changes can be made.

  As shown in FIG. 3, a hand operation switch 46 is provided on the upper surface of the hand operation tube 4 in front of the grip portion 44. The hand operation switch 46 includes a plurality of buttons for starting / stopping operation and adjusting suction force. By providing the hand operation switch 46 in front of the grip portion 44 in this way, it is possible to prevent the user from operating the hand operation switch 46 by mistake when operating the hand operation tube 4 while holding the grip portion 44. . An attachment / detachment button 47 for attaching / detaching the extension tube 5 (see FIG. 1) is provided on the upper surface of the hand operation tube 4 in front of the hand operation switch 46.

  In addition, the hand control tube 4 includes a storage hook 48 that is hooked to the tip of the extension tube 5 or various parts when the extension tube 5 and the hand control tube 4 are removed when the vacuum cleaner 1 is stored. .

  Further, the hand operating tube 4 is connected to the hose 3 via a rotating tube 51 and a hose cover 52 that covers the rotating tube 51 described later, and the hose 3, the rotating tube 51, and the hose cover 52 rotate with respect to the hand operating tube 4. Connected as possible. The detailed structure of this part will be described later. Thus, since the rotary tube 51 is rotatably connected to the hand operation tube 4, even if the hose 3 is twisted, the rotary tube 51 rotates and the hose 3 can be prevented from being twisted.

  As shown in FIG. 4, the hand operation tube 4 includes an operation tube body 41, an upper surface cover 42, and a lower surface cover 43, and includes a switch board 46 a for the hand operation switch 46 and the like. The switch board 46a includes a plurality of tact switches for detecting a pressing operation of the hand operation switch 46. In FIG. 4, the structure inside the hand operation tube 4 is omitted except for a screwing member.

  The hand control tube 4 includes a first unlocking mechanism for the attach / detach button 47 for attaching / detaching the extension tube 5, a second unlocking mechanism for the movable trigger 49, and the like.

  The first unlocking mechanism includes a support portion 47b having a shaft 47a. An operation portion 47c is formed on one side of the support portion 47b so as to protrude from the through hole 42s of the top cover 42, and the extension tube 5 (FIG. 1) is formed on the other side. An engaging portion 47d is formed to engage with (see). When the operation portion 47c is pressed, the support portion 47b performs a seesaw operation with the shaft 47a as a fulcrum, and the engagement portion 47d is lifted, and is engaged (locked) with the engaged portion (not shown) of the extension pipe 5. Is released. Further, when the hand (finger) is released from the operation part 47c, the support part 47b returns to the initial state by the elastic force of a spring member (not shown).

  The second unlocking mechanism includes a first rod 49b coupled to the operation portion 49a touched by the user's finger, a link member 49c coupled to the first rod 49b, and a second rod 49d coupled to the link member 49c. Etc. The second rod 49d is connected to the lock release button 5c (see FIG. 1) via a rod (not shown) on the extension pipe 5 side. When the operation unit 49a is operated, the link member 49c operates via the first rod 49b, and the lock release button 5c is released by moving the second rod 49d in the front-rear direction. When the finger is released from the operation portion 49a, the initial state (locked state) is restored by the elastic force of a spring member (not shown).

  The operation tube main body 41 includes a tubular portion 41a having a flow path M1 (see FIG. 7) for communicating the extension tube 5 (see FIG. 1) and the rotating tube 51 (the hose 3), and the tubular portion 41a. And a main body 41b which is formed and constitutes the handle 45.

  The front portion of the main body portion 41b is located above the cylindrical portion 41a, and is configured to extend (rearward) to the side to which the hose 3 is connected. The main body 41b is configured such that the closed region R of the handle 45 is located behind the rear end 41a1 of the tubular portion 41a.

  That is, the main body 41b has a first inclined portion 41b1 inclined in a direction away from the tubular portion 41a (the hose 3) from the front end 41a2 of the tubular portion 41a to the rear, and a second inclined in a direction approaching the hose 3. The inclined portion 41b2 and the horizontal portion 41b3 connecting the first inclined portion 41b1 and the second inclined portion 41b2 are integrally formed to constitute a closed space (closed region R). The first inclined portion 41b1 and the second inclined portion 41b2 are formed in a substantially convex shape in sectional view inward (see FIG. 8), and the horizontal portion 41b3 is formed in a substantially plate shape.

  The horizontal portion 41b3 is formed in parallel to the flow path M1 (see FIG. 7), the rotary tube 51, and the hose 3 of the cylindrical portion 41a. Further, the horizontal portion 41b3 is formed to extend in the front-rear direction (horizontal) in the upper vicinity of the outer periphery of the hose 3 (see FIG. 2).

  In addition, the rear end portion 41s of the main body portion 41b has a shape in which the horizontal portion 41b3 is curved upward toward the rear. Therefore, the rear end portion 41s of the main body portion 41b is located above the horizontal portion 41b3 in the vertical direction (vertical direction).

  The main body 41b is formed with a screw boss 41c protruding upward at a boundary portion (vertex portion T) between the first inclined portion 41b1 and the second inclined portion 41b2. A screw boss 41d (see FIG. 7) and a screw insertion hole 41e (see FIGS. 7 and 9) are formed in the main body 41b.

  The upper surface cover 42 is formed in a substantially bow shape, is formed so as to cover the entire area from the front end to the rear end of the operation tube main body 41, and constitutes the entire upper surface of the hand operation tube 4. That is, the upper surface cover 42 includes a first inclined surface 42a along the first inclined portion 41b1 of the main body portion 41b and a second inclined surface 42b (inclined surface) formed along the second inclined portion 41b2. ing. Further, the first inclined surface 42a and the second inclined surface 42b are formed in a substantially convex shape in sectional view toward the upper side (see FIG. 8).

  Thus, since the upper surface cover 42 is comprised over the full length L1 (refer FIG. 4) of the hand operation tube 4, when the hand operation tube 4 whole is seen from upper direction, the upper surface cover 42 is interrupted on the way. The design can be improved by painting the upper surface cover 42 or using a metallic resin.

  Further, a screw mounting hole 42c into which a screw 60a for screwing is inserted at a position corresponding to the screw boss 41c at the apex T of the boundary between the first inclined surface 42a and the second inclined surface 42b is formed in the upper surface cover 42. The first inclined surface 42a is formed with a screw attachment hole 42d into which a screw 60b for screwing is inserted. Screw insertion holes 42c1 and 42d1 (see FIG. 7) through which the screws 60a and 60b are inserted are formed in the screw mounting holes 42c and 42d. Further, a screw boss 42e is formed on the rear end portion inside the top cover 42 so as to protrude downward.

  The lower surface cover 43 constitutes a part of the closed region R together with the horizontal portion 41b3 of the main body portion 41b, is arranged so as to overlap the lower surface side of the horizontal portion 41b3, and is configured to face the hose 3 and the hose cover 52. Has been.

  The lower surface cover 43 includes a horizontal plate portion 43a that extends linearly in the front-rear direction (horizontal direction), a curved portion 43b that curves in a direction away from the hose 3 (upward) at the rear end portion of the horizontal plate portion 43a, Are integrally formed continuously. A convex portion 43 c that protrudes toward the surface facing the hose cover 52 is formed downward on the horizontal plate portion 43 a. Inside the curved portion 43b, a cylindrical screw insertion portion 43d is formed to protrude upward.

  As shown in FIG. 4, the rotating tube 51 has a substantially cylindrical shape, and a linear flow path is formed along the axial direction. The rotary tube 51 includes a pair of annular protrusions 51a and 51a formed on the front side in the axial direction at intervals in the axial direction, and a pair of annular flanges 51b and 51b at the substantially central portion in the axial direction. Formed at intervals in the direction.

  The hose cover 52 covers the outer periphery of the joint portion to which the rotary tube 51 and the hose 3 are connected (see FIG. 7), and has a pair of substantially semi-cylindrical cover portions 52a and 52a. 52a is configured to be combined in a cylindrical shape. A concave groove 52a1 is formed along the circumferential direction at the inner edge of the front end of the cover 52a. The hose cover 52 is assembled to the rotary tube 51 by fitting the groove formed by the flange parts 51b and 51b and the groove part 52a1. In addition, as an assembly | attachment means of cover part 52a, 52a, it can comprise by the engaging part (not shown) which can be mutually engaged, for example. Thereby, since the structure which an engaging part does not expose outside is attained, the design property can be improved. In addition, it is not limited to an engaging part, You may employ | adopt various methods, such as screwing, adhesion | attachment, and melt | fusion.

  As shown in FIG. 5, the convex part 43c formed in the lower surface cover 43 is formed in a convex line downward from the front end of the horizontal plate part 43a to a substantially central part in the front-rear direction. In addition, this convex part 43c is extended from the front end to the position which opposes the rear-end part 52a2 of the hose cover 52 (refer FIG. 7). In the present embodiment, the rear end portion 52 a 2 of the hose cover 52 is in contact with the convex portion 43 c of the lower surface cover 43. In FIG. 5 (FIG. 6), it is shown in a slightly separated state for convenience of explanation.

  As shown in FIG. 6, the surface 43 c 2 facing the hose cover 52 of the convex portion 43 c is formed in an arc shape along the arc shape of the outer peripheral surface 52 s of the hose cover 52. Note that the curvature of the surface 43c2 and the curvature of the outer peripheral surface 52s are set to be the same, and the surface 43c2 and the outer peripheral surface 52s are in contact with each other.

  By the way, when a user leaves the grip part 44 of the hand operation tube 4 and the hand operation tube 4 falls to the floor surface, the root of the hose cover 52 (groove 52a1 side) is more than necessary due to the impact of the fall. There is a risk that the hose cover 52 will be damaged. However, in the present embodiment, even if the hose cover 52 is deformed to the handle 45 side (upward) with the root as a fulcrum due to an impact when the hand operation tube 4 falls on the floor surface, the rear end portion 52a2 ( Since the outer peripheral surface 52s abuts on the convex portion 43c of the lower surface cover 43, the deformation of the hose cover 52 can be minimized, and the hose cover 52 can be prevented from being damaged. Therefore, it is not necessary to configure the hose cover 52 with a high strength member in order to prevent the hose cover 52 from being deformed. Further, the convex portion 43c of the lower surface cover 43 and the outer peripheral surface 52s (see FIG. 6) of the hose cover 52 opposed to the convex portion 43c are each formed in an arc shape, and are configured to contact each other at the arc-shaped portion. Therefore, even if the force acting on the hose cover 52 due to the impact of dropping is applied to the convex portion 43c, the force can be dispersed by abutting on the surface, so that the convex portion 43c and the hose cover 52 are It can be prevented from being damaged.

  Further, as shown in FIG. 6, the horizontal plate portion 43a of the lower surface cover 43 is slidably inserted and attached to the horizontal portion 41b3. That is, the horizontal portion 41b3 of the operation tube main body 41 (main body portion 41b) is formed in a substantially C shape in cross-sectional view by folding both ends in the width direction downward and inward. Then, the lower surface cover 43 is inserted into the horizontal portion 41b3 from the rear portion of the horizontal portion 41b3, and both end portions 43a1 and 43a1 of the horizontal plate portion 43a are in contact with recesses 41f and 41f formed at both end portions in the horizontal portion 41b3. Inserted in a slidable state. Thereby, the strength of the operation tube main body 41 (hand operation tube 4) can be improved by forming the closed space R1 with the horizontal portion 41b3 and the lower surface cover 43. In addition, the horizontal portion 41b3 is formed in a substantially C shape in cross-sectional view and the lower surface cover 43 is slidably assembled, so that the joint between the horizontal portion 41b3 and the lower surface cover 43 can hardly be seen, and the strength is improved. The design of the appearance can be improved. Further, by configuring the horizontal portion 41b3 and the lower surface cover 43 as described above, the lower surface cover 43 is not displaced in the width direction even if the hose cover 52 rotates while contacting the lower surface cover 43.

  Further, as shown in FIG. 6, the lower surface cover 43 is formed such that the width dimension W2 of the convex portion 43c is shorter than the width dimension W1 of the horizontal portion 41b3, and the convex portion 43c is in the width direction of the horizontal portion 41b3 (lower surface cover 43). It is comprised so that it may be formed in the approximate center part. Thereby, a substantially concave gap G composed of the horizontal portion 41b3, the side surface 43c1 of the convex portion 43c, and the outer peripheral surface 52s of the hose cover 52 is formed on both sides in the width direction of the convex portion 43c. .

  By the way, since the hose cover 52 is rotatably attached to the hand operation tube 4 (operation tube body 41) in order to prevent the hose 3 from being twisted, the user can hold the hose cover 52 while holding the hose cover 52. When 52 rotates, there is a possibility of pinching a finger or pinching the skin of the palm. For this reason, in this embodiment, the gap G is set to a predetermined dimension (for example, 5 mm) to prevent the pinching. That is, if the size is larger than the predetermined size, the user's finger may be pinched and feel pain, and if the size is smaller than the predetermined size, the skin of the user's palm may be pinched and feel pain. In this way, by providing a gap G having a predetermined dimension (approximately 5 mm) on both sides of the convex portion 43c of the lower surface cover 43, the finger can be pinched even if the hose cover 52 rotates leftward or rightward, and the skin of the palm of the hand can be removed. It can prevent pinching.

  As shown in FIG. 7, the rotating tube 51 is attached to the outer operation surface of the rotating tube 51 and is rotatably attached to the hand operating tube 4. The hose 3 is fixed to the rotary tube 51 through a retaining means (not shown), and airtightness between the rotary tube 51 and the hose 3 is secured through a seal member (not shown). ing.

  A stepped portion 41g with which the tip (front end) of the rotating tube 51 abuts is formed on the wall surface constituting the flow path M1 in the cylindrical portion 41a, and the tip of the rotating tube 51 is slidable on the stepped portion 41g. Has been inserted. Note that air does not leak from the gap between the hand operating tube 4 and the rotating tube 51 through a seal member (not shown) between the stepped portion 41g and the tip of the rotating tube 51.

  The front portion of the rotary tube 51 is inserted into the tubular portion 41a of the operation tube main body 41, and the front end surface of the hose cover 52 is in contact with the rear end 41a1 of the tubular portion 41a.

  Further, a retaining pin 70 is inserted into the operation tube main body 41, and the tip of the retaining pin 70 is inserted into a groove formed between the protrusions 51a and 51a, whereby the rotary tube 51 is connected to the operation tube. The main body 41 is prevented from coming out. Thereby, the rotary tube 51 rotates integrally with the hose 3 with respect to the local operation tube 4, and the hose cover 52 rotates integrally with the hose 3 and the rotary tube 51.

  Further, as shown in FIG. 7, the grip portion 44 of the handle 45 is formed such that the cross-sectional height H1 is the thinnest at the apex portion T of the closed region R. Incidentally, since the grip portion 44 is used by the user with his / her hand, the ease of gripping varies depending on the cross-sectional shape. Therefore, in the present embodiment, the ease of grasping the user's index finger portion is improved by setting the cross-sectional height H1 of the apex T of the grip portion 44 to the minimum dimension (for example, approximately 27 mm). . In the present embodiment, the width W3 (see FIG. 8) of the grip portion 44 is configured to be substantially uniform at any position of the grip portion 44. Moreover, the cross-sectional height H1 of the grip part 44 is formed thinner than the cross-sectional height H2 of the center part of the grip part 44 and the cross-sectional height H3 of the rear end part, and the cross-sectional height H3 is smaller than the cross-sectional height H2. It is formed thick. Therefore, the grip portion 44 is configured to become thicker from the apex portion T toward the grip end. In this way, like the golf club etc., the thicker finger part on the little finger side can grip firmly, so when trying to lift the grip part 44 with the suction port 6 and the extension pipe 5 attached, It becomes easy to lift.

  Further, as shown in FIGS. 7 and 8, the operation tube main body 41 and the upper surface cover 42 are screwed at the apex T of the grip portion 44. That is, the screw 60a is inserted from the screw mounting hole 42c of the upper surface cover 42, is further inserted into the screw insertion hole 42c1, and the screw 60a is screwed into the screw boss 41c of the operation tube body 41, whereby the upper surface cover 42 is operated. It is fixed to the upper part of the main body 41.

  Note that the operation tube body 41 in the grip portion 44 has a high strength by forming a thick resin. Also, as shown in FIG. 8, the edge portions 41h and 42h are assembled by inlay fitting at both ends in the width direction of the operation tube main body 41 and the upper surface cover 42. The upper surface cover 42 is not displaced in the width direction. Further, by fixing the upper surface cover 42 to the operation tube main body 41, the closed space R2 is formed between the operation tube main body 41 and the upper surface cover 42, so that the strength of the hand operation tube 4 can be improved.

  Further, as shown in FIGS. 7 and 9, the operating tube main body 41, the upper surface cover 42, and the lower surface cover 43 are screwed at the rear end portion of the grip portion 44. That is, the screw 60c is inserted from the screw insertion portion 43d of the lower surface cover 43, is inserted into the screw insertion hole 43d1 and the screw insertion hole 41e of the operation tube main body 41, and is screwed into the screw boss 42e of the upper surface cover 42. Thus, the three parts of the operation tube main body 41, the upper surface cover 42, and the lower surface cover 43 are fixed together.

  In this way, by adopting a configuration in which the screw 60c is inserted from the lower side, it is possible to improve the designability when the hand operating tube 4 is viewed from above, and the lower surface cover 43 is connected to the screw 60c via the screw 60c. By fixing to the operation tube main body 41, the strength of the local operation tube 4 can be further improved. In particular, the rear end portion of the hand control tube 4 is a portion that requires the most strength when the grip portion 44 is bent or twisted, but the strength can be improved by fastening three parts simultaneously. it can.

  Incidentally, it is very important to match the shape of the outer appearance of the upper surface cover 42 and the lower surface cover 43 constituting the hand operation tube 4 and the operation tube main body 41, and it is inconvenient for the user's hand if there is a step or a gap. May give a pleasant feeling. Therefore, in the present embodiment, as described above, the three-part structure is fastened with the screw 60c so that the shape of the three parts can be surely matched without forming a step or a gap. It becomes possible to limit. Therefore, when the grip part 44 is gripped, no uncomfortable feeling is given, and the design of the appearance can be improved.

  As shown in FIG. 7, in the vacuum cleaner 1, the flow path M <b> 1 of the cylindrical portion 41 a of the operation tube main body 41, the rotary tube 51 connected to the cylindrical portion 41 a, and the rotary tube 51 are connected. The hose 3, the hose cover 52, and the lower surface cover 43 are all arranged in parallel. By the way, conventionally, if the flow path is curved between the cylindrical portion and the rotating tube, the suction force is reduced, and the dust flowing through the inside collides with the inner wall, so there is a high possibility that the dust adheres. Therefore, in the present embodiment, the cylindrical portion 41a, the rotating tube 51, and the hose 3 are all arranged linearly along the center line Q so that there is no curved portion of the flow path. It can prevent that the suction power of vacuum cleaner 1 falls, and can provide vacuum cleaner 1 with strong suction power. Moreover, since there is little possibility that the dust flowing inside collides with the inner wall, it is possible to reduce the adhesion of the dust to suppress the reduction of the flow path area and to suppress the reduction of the suction force.

  In addition, if the hand control tube 4 is bent at an angle, if the user accidentally drops the hand control tube 4 on the floor surface, excessive stress is applied to the hose or hose mounting part, There is a risk of damage to the portion connecting the hand control tube. In this embodiment, the flow path M1, the rotary tube 51, the hose 3, the hose cover 52, and the lower surface cover 43 of the tubular portion 41a can all be arranged in parallel, so that the hose cover can be removed when the hand operation tube 4 is dropped. Since it is possible to prevent excessive stress from acting on the root portion of 52 and the tip portion of the rotary tube 51 and to minimize the amount of displacement of the hose cover 52, the hose 3, the hand control tube 4, Damage to the rotary tube 51 and the hose cover 52 can be prevented.

  Moreover, as shown in FIG. 7, the 2nd inclined surface 42b which comprises the grip part 44 has the linear part 42b1, as for the hand operation tube 4. As shown in FIG. In addition, the linear part 42b1 of this embodiment is formed from the center part of the grip part 44 to a grip end, as shown by the double arrow. Thus, by having the straight portion 42b1, when the grip portion 44 is gripped and lifted with the suction port 6 and the extension pipe 5 attached, the palm is in close contact with the straight portion 42b1 and can be supported over a wide area. Therefore, the vacuum cleaner 1 that is easy to lift and easy to use can be provided.

  Further, as shown in FIG. 10A, when cleaning the back of the bed B (or under the sofa) having a short distance from the floor, the extension pipe 5 is substantially parallel to the floor. It is necessary to operate it down. At this time, if the tubular portion 41a and the rotary tube 51 are bent in a square shape when viewed from the side, the hose 3 is in a state of being pressed strongly against the floor surface and is not convenient to use. There is a risk that the hose 3 may be damaged by friction between the hose 3 and the floor surface. Therefore, in this embodiment, when cleaning the back of the lower bed B or the like, even if the extension pipe 5 is lowered until it is substantially parallel to the floor surface, the hose 3 does not contact the floor surface, or Even if it contacts, since only a small frictional force is generated, it is easy to use and there is no possibility that the hose 3 is broken. In addition, since the lower surface cover 43 and the hose cover 52 are all configured parallel to the center line Q, there are few appearance irregularities and the design can be improved.

  Further, since the rear end portion of the lower surface cover 43 is curved upward, it is not necessary to operate the grip portion 44 by grasping the entire grip portion 44 when cleaning the bottom of the bed B or the like, as shown in FIG. As described above, the index finger is hooked on the V-shaped corner of the rear end of the grip portion 44, the thumb is applied to the upper surface cover 42, the side surface of the middle finger is applied to the lower surface cover 43, and the hand operation tube 4 is operated with three fingers. By supporting this, it is possible to perform cleaning while stably holding the hand operation tube 4.

  As described above, according to the vacuum cleaner 1 according to the present embodiment, the hand operating tube 4 includes the handle 45 having the closed region R, and a part of the closed region R is located at a position where the handle 45 faces the hose 3. Since the closed space can be formed with the operation tube body 41 forming the closed region R, the strength of the hand operation tube 4 can be improved. In addition, since the handle | steering-wheel 45 is provided with the obstruction | occlusion area | region R, it can prevent that a user's hand falls off from the hand operation tube 4, and does not impair operativity.

  By the way, if the hose 3 has a structure that is rotatable with respect to the hand operation tube 4, the joint portion between the hose 3 and the hand operation tube 4 is most likely to be damaged. When the hose 3 hits the floor surface, a stress that bends the joint portion acts on the hand control tube 4, so that the joint portion is most easily damaged. Therefore, in the present embodiment, a structure in which the convex portion 43c of the lower surface cover 43 abuts on the hose cover 52 in a structure that includes the rotary tube 51 and the hose cover 52 and the hose 3 is rotatable with respect to the hand operation tube 4 is configured. Therefore, it is possible to improve the strength of the hose attachment portion (the root of the hose cover 52, the tip of the rotary tube 51, etc.) that is rotatably attached to the hand operation tube 4.

  In the present embodiment, the convex portion 43c of the lower surface cover 43 is formed at a substantially central portion in the width direction of the hand operation tube 4, and a predetermined gap G that prevents the fingers from being caught on both sides in the width direction of the convex portion 43c is formed. Since it provided, it can prevent that a user pinches the skin of a finger | toe or a palm in the rotating hose cover 52, preventing that the hose attachment part rotatably attached to the hand control tube 4 is damaged.

  In the present embodiment, the surface 43c2 of the convex portion 43c of the lower surface cover 43 and the shape of the outer peripheral surface 52s of the hose cover 52 are each formed in an arc shape, and the outer peripheral surface 52s of the hose cover 52 and the lower surface cover 43 are mutually connected. Since it contacts the arcuate portion, the force when the hose cover 52 collides with the convex portion 43c can be dispersed to prevent the lower surface cover 43 and the hose cover 52 from being damaged.

  In the present embodiment, the upper surface cover 42 that constitutes the upper surface of the hand operation tube 4 is provided, and the lower surface cover 43, the upper surface cover 42, and the lower surface cover 43 penetrate from the lower side of the lower surface cover 43 through the operation tube body 41. Since the design of the external appearance is improved when the hand control tube 4 is viewed from the upper surface, the lower surface cover 43 is screwed together with the operation tube main body 41 and the upper surface cover 42 to be screwed together. Strength can be improved.

  The present invention is not limited to the above-described embodiment, and can be implemented in various forms. For example, by providing the lower surface cover 43, the hose 3 is less likely to directly hit the operation tube main body 41, but by making the material of the lower surface cover 43 softer than the material of the operation tube main body 41, the hose 3. The vacuum cleaner 1 can be used over a long period of time.

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner 2 Vacuum cleaner main body 3 Hose 4 Hand operation pipe 5 Extension pipe 6 Suction port 41 Operation pipe main body 41a Tubular part 41b Handle main-body part 41b1 1st inclination part 41b2 2nd inclination part 41b3 Horizontal part 41c Screw boss 42 Top cover 42a First inclined surface 42b Second inclined surface (inclined surface)
42b1 Straight portion 42e Screw boss 43 Lower surface cover 43a Horizontal flat plate portion 43b Curved portion 43c Convex portion 43c2 Surface 43d Screw insertion portion 44 Grip portion 45 Handle 46 Hand operation switch 49 Movable trigger 51 Rotating pipe 51a Protruding portion 51b Hook portion 52 Hose cover 52a Cover portion 52a1 Groove portion 52a2 Rear end portion 52s Outer peripheral surface 60a, 60b, 60c Screw 70 Retaining pin G Gap H1, H2, H3 Section height M1 Channel R Blocking region T Vertex portion (substantially apex portion)

Claims (5)

In a vacuum cleaner comprising a vacuum cleaner main body, and a hand control tube having one end connected to the vacuum cleaner main body via a hose,
The hand control tube includes a handle that extends to a side to which the hose is connected and has a substantially triangular closed region in a side view,
The vacuum cleaner according to claim 1, wherein the handle has a lower surface cover constituting a part of the closed region at a position facing the hose. A rotating tube that rotates integrally with the hose on the hand control tube;
A hose cover that covers the outer periphery of the joint between the hose and the rotary tube, and rotates integrally with the hose and the rotary tube;
The vacuum cleaner according to claim 1, wherein the lower surface cover has a convex portion protruding toward the hose side, and the convex portion abuts on the hose cover. The convex portion of the lower surface cover is formed at a substantially central portion in the width direction of the hand operation tube,
The electric vacuum cleaner according to claim 2, wherein a predetermined gap is provided on both sides of the convex portion in the width direction. The convex portion of the lower surface cover and the outer peripheral surface of the hose cover are each configured in an arc shape,
The vacuum cleaner according to claim 2 or 3, wherein the hose cover and the lower surface cover abut on each arcuate portion. The hand control tube includes an upper surface cover constituting an upper surface,
5. The device according to claim 1, wherein the lower surface cover and the upper surface cover are screwed through the operation tube main body of the hand operation tube from the lower side of the lower surface cover. Electric vacuum cleaner.

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