JPH1066666A - Electric vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric vacuum cleaner capable of preventing the danger of the detachment of a back cover from the brush case of a brush part. SOLUTION: The inward rib 6 of the back cover 2 is engaged with the outward rib 5 of the brush case 1. Then, the back cover 2 is turned upwards with the outward rib 5 as a turning shaft and the vertical direction rib 13 of the back cover 2 is abutted to the rear surface of the horizontal direction rib 11 of the brush case 1. Then, the back cover 2 is turned upwards further in the state of abutting the vertical direction rib 13 to the rear surface of the horizontal direction rib 11 and the locking pawl 9a of the back cover 2 is elastically locked to a locking hole 8a in the rib 7a for locking of the brush case 1 from a front part to a rear part. As a result, the back cover 2 is surely connected to the brush case 1 at the front part, a middle part and the rear part. Also, the lower edge 10a of a bumper 10 mounted to the brush case 1 is tightly held by the back cover 2 and the brush case 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner, and more particularly, to a vacuum cleaner having a brush portion in which a rotating brush is housed.

[0002]

2. Description of the Related Art Conventionally, as a vacuum cleaner of this type, Japanese Utility Model Publication No. 2-10970 (international classification: A47L5 /
309/00) are known.

The vacuum cleaner basically consists of a nozzle upper part (brush case), a nozzle lower part (back lid), and a rotary brush rotatably housed in the upper and lower parts. A substantially inverted L-shaped engaging claw protruding outward at the front end of the lower lid, and an impact receiving portion having an engaging hole engaging with the engaging claw protruding at the front end of the upper lid, The engagement claws are inserted obliquely into the engagement holes, fixed in the vertical position, and the front ends of the upper and lower lids are fitted and connected.

The rear ends of the upper and lower lids in this vacuum cleaner are connected by, for example, fixing the rear part of the lower lid to the upper lid with screws.

[0005]

In this vacuum cleaner, the connection between the front ends of the upper and lower lids is substantially inverted L-shape, and the outwardly projecting engaging claw and the engaging claw are connected to each other. Due to the engagement with the engaging hole, when the nozzle portion hits a wall or a pillar of the room during the cleaning and receives an impact, the engaging claw comes out of the engaging hole and the lower lid moves backward with respect to the upper lid. There is a risk of slipping off.

If the connection between the rear ends of the upper and lower lids is made by screws, this risk is further increased when the screws are incompletely screwed or the screws become loose during cleaning. Become.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and a main problem thereof is to provide a vacuum cleaner which can prevent the back cover from coming off the brush case of the brush portion. It is in.

[0008]

According to the present invention, there is provided a cleaner body having a dust collection chamber therein, and a brush connected to the cleaner body, wherein the brush has a downward opening. A brush case, a back cover connected to cover the downward opening of the brush case from below, and a rotating brush for dust collection rotatably housed inside the brush case and the back cover, The brush case is provided with a rib-shaped outward front edge protruding forward on the outer surface of the front wall,
A rib-like lateral locking portion is provided on each of the inner surfaces of the left and right side walls, and a rib-like inward front portion is provided on the back cover, which projects rearward on the inner surface of the front wall and is engageable with the outward front edge. An edge portion is provided, and a rib-like vertical locking portion is provided on each of the left and right side walls, which protrudes upward and can abut and lock on the rear surface of the horizontal locking portion. Of the rear cover and the brush case are fixedly engaged with each other while the vertical locking portion of the back cover and the horizontal locking portion of the brush case are abutted and locked. Thus, a vacuum cleaner is provided, wherein the back cover is connected to the brush case.

In this specification, "front" refers to the direction in which the brush portion of the vacuum cleaner is arranged, and "rear" refers to the direction in which the cleaner body is arranged, and "left" or "right". Refers to the upward or downward direction when the brush unit and the cleaner body are placed in the horizontal position in the original usage form, respectively.

[0010] The vacuum cleaner according to the present invention may be a vertical type or a canister type, and includes a vacuum cleaner main body and a brush portion. The main body of the vacuum cleaner is provided with a dust collection room, an electric blower room, and the like. The brush unit includes a brush case, a back cover, and a rotating brush for dust collection. In a vertical vacuum cleaner, the brush unit is rotatably supported by the vacuum cleaner main body, and is attached to a canister vacuum cleaner. Is connected to the cleaner body via a suction hose.

The brush case includes an upper wall, a front wall, left and right side walls and the like, and has a downward opening.
The back cover includes a front wall, left and right side walls, and the like, has an opening for intake, and is connected to the brush case so as to cover a downward opening of the brush case from below. The rotating brush is rotatably supported inside the brush case and the back cover, for example, on the inner surfaces of both side walls of the brush case, and is housed in a state where the rotating brush is partially exposed from the intake opening of the back cover.

In the brush case, an outward front edge is provided on the outer surface of the front wall, and lateral locking portions are provided on the inner surfaces of the left and right side walls, respectively. The outward front edge is a rib-shaped portion that projects forward of the brush case, for example, over the entire left and right length of the front wall. The lateral locking portion is a rib-shaped portion that protrudes in the lateral direction (rightward or leftward) of the brush case, for example, substantially perpendicular to the inner surface of the side wall.

The back cover is provided with an inward front edge portion on the inner surface of the front wall, and is provided with a vertical locking portion on each of the left and right side walls. The inwardly facing front edge is a rib-like portion projecting rearward of the back cover, for example, over the entire left and right length of the front wall, and can be engaged with the outwardly facing front edge. The vertical locking portion is a rib-shaped portion in which a part of a side wall protrudes upward, for example, above the back cover, and can be abutted and locked to a rear surface of the horizontal locking portion.

In the back cover and the brush case configured as described above, the inward front edge of the back cover is engaged with the outward front edge of the brush case, and The back cover is connected to the brush case by abuttingly engaging the laterally engaging portion of the brush case. Then, the outward front edge of the brush case and the lateral locking portion are sandwiched from the front and rear by the inward front edge of the back cover and the vertical locking portion, and the back cover may come off from the brush case. Can be reliably prevented.

An inward front edge portion of the back cover and a vertical locking portion;
The outer front edge and the lateral locking portion of the brush case are such that the back lid is attached to the brush case regardless of whether the front edge is engaged or the contact is locked. It is configured to be connectable. Further, the rear part of the back cover and the rear part of the brush case are configured to be fixed by, for example, mutual elastic engagement or screwing.

In the electric vacuum cleaner according to the present invention, from the viewpoint of preventing the back cover from moving forward or rearward with respect to the brush case and coming off the brush case, the engagement between the front edges is performed by the engagement portions. It is preferable to perform the locking before the abutment between the two. That is, the distance from the outward front edge of the brush case to the horizontal locking portion and the distance from the inward front edge of the back cover to the vertical locking portion are determined by changing the inward front edge to the outward front edge. It is preferable that the setting is made such that the vertical locking portion can be brought into contact with and locked to the horizontal locking portion only after both front edges are engaged by moving from the front to the rear.

In the vacuum cleaner of the present invention, when a bumper is mounted on the brush case, it is preferable that the lower edge of the bumper is tightly sandwiched between the back cover and the brush case. This is because it is possible to prevent the bumper from being turned up or misaligned or the chatter phenomenon at the joint between the brush case and the back cover, which may occur during use.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited by this.

As shown in FIG. 1, a vertical vacuum cleaner P according to one embodiment of the present invention includes a cleaner main body 51, a brush section 52, and a suction hose 53. This cleaner main body 51 is mainly placed in a vertical position, and a dust collection chamber is provided in the center of the inside, and an electric blower room is provided below the inside. A dust bag is detachably attached to the dust collection chamber, and an electric blower 54 is arranged in the electric blower room. The motor shaft 54a of the electric blower 54 extends substantially horizontally in the left-right direction.

The brush section 52 is pivotally supported on the cleaner main body 51 so as to be vertically rotatable via a rotary shaft provided on the lower front side of the cleaner main body 51.

As shown in FIG. 1 and FIG.
Has a brush shape 1 and a back cover 2
And a rotary brush 4 for dust collection.

As shown in FIGS. 1 and 3, the brush case 1 comprises an upper wall 21, a front wall 22, a left outer wall 23, and a right outer wall 2.
4. It is formed by a left inner wall 25, a right inner wall 26, a left rear wall 27, a right rear wall 28, and a central rear wall 29, and has a downward opening 1a over the whole.

The brush case 1 is provided with an outwardly facing rib 5 on the outer surface of the front wall 22 as an outwardly facing front edge, and is laterally engaged with the inner surfaces of the left outer wall 23 and the right outer wall 24, respectively. Horizontal ribs 11 and 12 are provided as parts. The outward rib 5 is a rib-shaped portion that protrudes forward over the entire left and right length of the front wall 22. Horizontal rib 11
Reference numeral 12 denotes a rib-like portion which projects in a lateral direction (rightward or leftward) substantially perpendicularly to the inner surfaces of the left outer wall 23 and the right outer wall 24, and also serves to reinforce the side walls 23 and 24. .

The brush case 1 has a rubber bumper 1 on its outer surface from the front wall 22 to the front halves of the left and right outer walls 23 and 24.
0 is attached. The bumper 10 has a substantially flat shape in plan view, and has a lower edge 10a over its entire length. The lower edge 10a has a portion attached to the center of the front wall 22 composed of a horizontal wall and a hanging wall connected to the horizontal wall, and a portion attached to the left and right portions of the front wall 22 and a portion attached to both side walls 23 and 24. Consists of horizontal walls.

Further, on the inner side of the rear part of the brush case 1, the left side rear wall 27 and the right side rear wall 28
Suspended locking ribs 7a and 7b are provided. Each locking rib 7a, 7b has a locking hole 8a, 8b.

As shown in FIG. 4, the back cover 2 has a bottom wall 31,
Front wall 32, left outer wall 33, right outer wall 34, left inner wall 3
5, formed by the right inner wall 36, the left rear wall 37, the right rear wall 38, and the central rear wall 39, and have three upward openings 2a and three intake openings at the front of the bottom wall 31 over the whole thereof. Parts 3a, 3b and 3c.

The back cover 2 is provided with an inward rib 6 serving as an inwardly facing front edge on the inner surface of the front wall 32, and a vertically engaging portion on the left outer wall 33 and the right outer wall 34, respectively. Vertical ribs 13 and 14 are provided. The inward rib 6 is a rib-shaped portion that projects rearward over the entire left and right length of the front wall 32. The vertical ribs 13 and 14 are rib-shaped portions in which a part of both side walls 33 and 34 protrude upward in an extended manner, and abut and lock on the rear surfaces of the horizontal ribs 11 and 12 of the brush case 1. be able to.

The distance from the outward rib 5 of the brush case 1 to the lateral ribs 11 and 12 and the distance from the inward rib 6 of the back cover 2 to the vertical ribs 13 and 14 are determined by changing the inward rib 6 to the outward rib 5. The vertical ribs 13. 1 are moved only after the two ribs 5 and 6 are engaged by moving the ribs from the front to the rear.
4 is set so as to be able to abut and lock the lateral ribs 11 and 12. Thereby, the brush case 1
And the back cover 2 are connected in such a manner that the outward ribs 5 and the lateral ribs 11 and 12 of the brush case 1 are sandwiched between the inward ribs 6 and the vertical ribs 13 and 14 of the back cover 2 from front and rear. .

At the rear part of the back cover 2, upwardly projecting hook-shaped locking claws 9 a and 9 b are provided at positions near the left rear wall 37 and the right rear wall 38, respectively. These locking claws 9a
9b is a locking rib 7a of the brush case 1 respectively.
It can be elastically locked from front to rear in the locking holes 8a and 8b in 7b.

The rotating brush 4 is rotatably supported by the inner surfaces of the left and right outer walls 23 and 24 of the brush case 1 inside the brush case 1 and the back cover 2 as shown in FIGS. The brush bristles are stored in a state where the brush bristle tips are exposed from the intake openings 3a, 3b, and 3c.

The rotary brush 4 is disposed so that the shaft 4a extends substantially horizontally in the left-right direction, and the electric blower is driven via a driving rubber belt 55 which is stretched between the shaft 4a and the motor shaft 54a of the electric blower 54. The rotation is driven by 54. The dust collected by the rotation of the rotating brush 4 passes through the suction pipe 56 disposed between the right outer wall 24 and the right inner wall 26 of the brush case 1 and the hose 5.
Guided to 3.

FIG. 5 is an exploded perspective view of the brush section 52.

Hereinafter, a method of connecting the brush case 1 and the back cover 2 in the brush portion 52 will be described with reference to FIGS.

As shown in FIG. 6, first, the inward rib 6 of the back cover 2 is engaged with the outward rib 5 of the brush case 1.
Next, the back cover 2 is rotated upward using the outward rib 5 of the brush case 1 as a rotation axis, and the vertical ribs 13.
4 is brought into contact with the rear surfaces of the lateral ribs 11 and 12 of the brush case 1. Then, the rear cover 2 is further rotated upward in a state where the vertical ribs 13 and 14 are in contact with the rear surfaces of the horizontal ribs 11 and 12, and as shown in FIG. 9b to the locking ribs 7a and 7 of the brush case 1.
b to elastically lock from front to rear in the locking holes 8a and 8b.

As a result, the back cover 2 is securely connected to the brush case 1 at the front, middle and rear portions. The lower edge 10a of the bumper 10 attached to the brush case 1 is
The brush case 1 is tightly sandwiched between the back cover 2 and the brush case 1.

In this vertical vacuum cleaner P, the brush case 1 and the back cover 2 are composed of a front part (outward ribs 5 and inward ribs 6) and an intermediate part (horizontal ribs 11 and 12 and a vertical part). Rib 1
3.14) and the rear portion (the locking holes 8a, 8b and the locking claws 9a, 9b in the locking ribs 7a, 7b) are securely connected, so that the possibility that the back cover 2 comes off from the brush case 1 is ensured. Can be prevented.

Here, the brush case 1 and the back cover 2 are moved forward and backward by the outward rib 5 and the lateral ribs 11 and 12 of the brush case 1 by the inward rib 6 and the vertical ribs 13 and 14 of the back cover 2. Since it is connected in a state of being sandwiched from the brush case 1, it is possible to particularly effectively prevent the possibility that the back cover 2 shifts forward or backward with respect to the brush case 1 and comes off the brush case 1.

The lower edge 10a of the bumper 10 mounted from the front wall 22 to the outer walls 23 and 24 of the brush case 1 is tightly sandwiched between the back cover 2 and the brush case 1. Therefore, it is possible to prevent the bumper 10 from being turned up or out of place, or a chatter phenomenon at a joint portion between the brush case 1 and the back cover 2, which may occur during use.

[0039]

In the vacuum cleaner according to the first aspect of the present invention, the inward front edge of the back cover is engaged with the outward front edge of the brush case, and the back cover is vertically oriented. The locking portion and the horizontal locking portion of the brush case are abutted and locked, and the rear portion of the back cover and the rear portion of the brush case are fixed, whereby the back cover is connected to the brush case. Then, the outward front edge of the brush case and the lateral locking portion are sandwiched from the front and rear by the inward front edge of the back cover and the vertical locking portion, and the back cover may come off from the brush case. Can be reliably prevented.

According to a second aspect of the present invention, in the vacuum cleaner, a distance from the outward front edge portion to the horizontal locking portion and a distance from the inward front edge portion to the vertical locking portion. The distance is such that the vertical locking portion is brought into contact with the horizontal locking portion only after both front edges are engaged by moving the inward front edge portion toward the outward front edge portion from front to back. Since the back cover is set so as to be able to stop, it is possible to particularly effectively prevent the possibility that the back cover is shifted forward or backward with respect to the brush case and comes off the brush case.

In the vacuum cleaner according to claim 3 of the present invention, the lower edge of the bumper mounted on the brush case is tightly sandwiched between the back cover and the brush case.
In addition to the effects described in the item 2, it is possible to prevent the bumper from being turned up or out of mounting, or the chatter phenomenon at the joint between the brush case and the back cover, which may occur during use.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a configuration of a vertical vacuum cleaner according to one embodiment of the present invention as viewed obliquely from above.

FIG. 2 is a configuration explanatory view of a brush portion of the vacuum cleaner of FIG. 1 as viewed from below.

FIG. 3 is a configuration explanatory view of a brush case constituting the brush unit of FIG. 2 as viewed from below.

FIG. 4 is a configuration explanatory view of a back cover constituting the brush unit of FIG. 2 as viewed from above.

FIG. 5 is an exploded perspective view of the brush unit shown in FIG. 2;

FIG. 6 is a configuration explanatory view showing a state in which a brush case and a back cover constituting the brush unit of FIG. 2 are being connected.

FIG. 7 is a sectional view taken along the line AA of FIG. 2, showing a state after the brush case and the back cover are connected.

[Explanation of symbols]

 51 vacuum cleaner main body 52 brush part 1 brush case 1a downward opening 22 front wall 23 left outer wall 24 right outer wall 2 back lid 32 front wall 33 left outer wall 34 right outer wall 4 rotating brush 5 outward rib (outward facing front) Edge) 6 Inward rib (inward front edge) 10 Bumper 10a Lower edge 11 Lateral rib (horizontal locking portion) 12 Horizontal rib (horizontal locking portion) 13 Vertical rib (vertical locking portion) 14 Vertical Orientation rib (vertical locking part)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akihiro Morita 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Hideichi Higuchi 2-5-1, Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. (72) Inventor Kazuhiro Fujii 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (3)

[Claims] 1. A brush body having a dust collecting chamber therein, a brush portion connected to the cleaner body, wherein the brush portion has a downward opening, and a downward opening of the brush case. A back cover connected so as to cover the portion from below, and a rotating brush for dust collection rotatably housed inside the brush case and the back cover. In addition to providing a rib-shaped outward front edge protruding into the inner wall of the left and right sides, a rib-shaped lateral locking portion protruding in the lateral direction is provided on each of the inner surfaces of the left and right side walls, and the rear cover is protruded rearward on the inner surface of the front wall and the outer side. A rib-shaped inward front edge that can be engaged with the front-facing edge, and a rib-shaped vertical lock that protrudes upward from each of the left and right side walls and can abut against and lock to the rear surface of the horizontal locking portion. Part, the inward front edge of the back lid and the brush case Of the rear cover and the brush case are fixedly engaged with each other while the vertical locking portion of the back cover and the horizontal locking portion of the brush case are abutted and locked. An electric vacuum cleaner, wherein the back cover is connected to the brush case. 2. The distance from the outward leading edge to the lateral locking portion and the distance from the inward leading edge to the vertical locking portion are determined by changing the inward leading edge to the outward leading edge. The vertical locking portion is configured to be able to abut and lock to the horizontal locking portion only after both front edges are engaged by moving from the front to the rear. Vacuum cleaner as described. 3. The vacuum cleaner according to claim 1, wherein a bumper is mounted on the brush case, and a lower edge of the bumper is tightly sandwiched between the back cover and the brush case.