JP3007759B2 - Vacuum cleaner floor suction - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction device for floors of a vacuum cleaner, and more particularly to a structure for attaching and detaching a rotary brush.

[0002]

2. Description of the Related Art In a floor suction device of this type, an opening is provided in an upper portion of a brush chamber and a bearing chamber of a main body in order to remove dust caught on a rotating brush, and the opening is covered with a lid. the Japanese Utility Model 60 - disclosed in 94153 JP.

By the way, in the above-mentioned conventional example, in order to remove dust entangled with the rotating brush from the upper opening, the lid covering the opening is removed, and even if the rotating brush can be removed from the brush chamber, the rotating brush is removed. To remove it, the belt had to be removed.

Another means is disclosed in Japanese Patent Application Laid-Open No. 63-19 / 1988.
One disclosed in Japanese Patent No. 7426 is known.
This is to remove the rotating brush from inside the case body,
The brush mounting hole provided in pairs 峙 the shaft support portion of the rotating brush off the closable lid body detachably, in which pulled out axially through the brush mounting hole.

[0005]

In the above conventional example,
In order to attach and detach the rotary brush from the upper opening of the main body as in the former case, it is necessary to attach and detach the lid, so that it is troublesome especially when the rotary brush is worn.

[0006] The latter ones, remove the lid provided in pairs 峙 the shaft support portion of the rotary brush, because those pulling the rotating brush from the brush Tosotoana, removed parts lost or brush There are problems such as difficulty in pulling out from the removal hole, and damage to the rotary brush when the rotary brush is taken in and out when the brush comes into contact with a shielding wall provided on the main body.

An object of the present invention is to provide a floor suction device for a vacuum cleaner having a rotary brush attaching / detaching mechanism capable of easily attaching / detaching a rotating brush with a simple operation.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a main body which houses a driving device and has a dust suction opening facing a cleaning surface, and a rotary bra of the main body .
Are the rotatably supported along the opening in the sheet chamber, thereby enabling reversible and detachable with respect to the axis, a rotary brush having a driven shaft joint at one end, provided in the body
Bell that transmits the torque of the drive to the driven shaft coupling
G, a transmission mechanism such as a driving shaft coupling, and the other end of the rotating brush.
Room for accommodating a bearing assembly that rotatably supports its part
And the mechanism chamber located at the other axial end of the opening.
The cleaning surface side is opened and closed by opening and closing the engagement mechanism.
Lid for attaching and detaching the rotating brush from the opening with
If, ing an operating member for opening and closing operation of the lid.

Further, the engaging mechanism is formed by a claw portion and a fitting hole.
And the contact surface between the claw portion and the fitting hole is provided with an inclination .

[0010]

The rotating brush can be attached and detached only by opening the lid provided on the lower case by operating the operating body .

[0011] In addition, when the lid is fitted to the claw, the fitting surface between the claw and the fitting hole is provided with an inclination, so that the lid can be easily opened by vibration or impact during cleaning. I will not do it.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a plan view of the floor suction device of the present invention with an upper case removed, and FIG. , FIG.
3 is a sectional view taken along the arrow B in FIG. 2 , and FIG. 4 is a sectional view taken along the line CC in FIG.

The suction device 1 has a main body composed of an upper case 2 and a lower case 3, and has a drive pipe 4 rotatable up and down at a rear end thereof, and a rotatable suction pipe 5 at the tip of the drive pipe 4. Are connected in series. The lower case 3 acts as a sled on the cleaning surface, and has a horizontally long dust-absorbing opening 6 formed at the front lower surface thereof, and a rubber sealing material 7 behind the opening 6.
Are arranged in parallel with the opening 6.

The opening 6 has a length substantially equal to the length of a rotary brush 17 described later.

The lower case 3 has a front wheel 8 at a lower front portion and a rear wheel 9 at a rear portion, and a fixed gap is formed between the lower case 3 and a cleaning surface by the wheels 8 and 9. ing.

Inside the suction tool 1, the rotating brush chamber 10 and the rotating brush chamber 1 are connected by coupling the upper case 2 and the lower case 3.
By forming a communication path 11 that communicates 0 with the drive pipe 4 side, a dust suction passage from the dust suction opening 6 to the suction pipe 5 is formed.

Further, a mechanism room 1 is provided on both sides inside the suction tool 1.
2 and 13, and a motor chamber 14 and an outlet (or control circuit board) storage chamber 15 are formed on both sides of the communication path 11 inside the mechanism chambers 12 and 13.

Reference numeral 16 denotes a pump which is sandwiched between the upper and lower cases 2 and 3 and is located on the outer periphery of the suction tool 1 and has a function of sealing the supply surfaces of the upper and lower cases 2 and 3 and a function of buffering obstacles. It is.

Reference numeral 17 denotes a rotating brush on the outer peripheral surface of the agitator 1.
8 and a brush 19 are provided in one or a plurality of spiral strips, and a bearing 20 is provided at one end in the rotary brush chamber 10 and a driving shaft coupling 2 of a transmitted part 24 described later is provided at the other end.
A driven shaft coupling 21 is provided to be connected to the shaft 5 and is rotatably supported by the shaft.

The bearing 20 is held up and down freely in the mechanism chamber 12. That is, a pair of opposing ribs 22 on the lower case 3 side constituting the mechanism chamber 12
The bearing 20 is positioned in the groove 23 of the ribs 22, 22 so that the bearing 20 can move up and down into the groove 23.

The driven shaft coupling 2 provided on the rotating brush 17
1 is connected to the shaft 26 of the transmitted portion 24.
The shaft 26 has a bearing A27, a gear 2
8. The bearing B29 is press-fitted and supported.

The bearing A27 is held in grooves in the ribs 22, 22 formed integrally with the lower case 3 of the mechanism chamber 13, and the bearing B29 is formed with the ribs 22, 22 formed integrally with the lower case 3. It is held in the groove 23 between them.
The bearings A27 and B29 are also supported so as to be able to move up and down in the grooves 23 in the respective ribs similarly to the bearing 20.

The bearing B29 held at one end of the lower case 3 is urged inward by a leaf spring 30 interposed between the bearing B29 and the side wall 3a of the lower case 23. Further, the bearing 20, the bearing A27, and the bearing B29 are always urged in the direction of the lower case 3 by a spring 32 built in a boss 31 provided in the upper case as shown in FIG.

The electric motor 33 is a DC magnet motor, and is arranged in the electric motor room 14 and has its rotating shaft 34 protruding into the mechanism room 13. The rotating shaft 34 has a gear A 35 and a bearing C
36 is supported.

The gear 28 and the gear A provided on the transmitted portion 24 are connected by a belt 37, and the rotational force of the electric motor 33 is transmitted to the rotating brush 17.

Numeral 38 denotes a rib for holding the bearing C, which is formed integrally with the lower case 3. Numerals 39 and 40 denote rubber vibration absorbers for absorbing the vibration of the electric motor 33 and preventing the transmission of the vibration to the upper case and the lower case 3. is there. The electric motor 33 is fixed between the upper case 2 and the lower case 3 via vibration isolating rubbers 39 and 40.

The opening 6 provided in the lower case 3 has a length substantially equal to the length of the rotating brush 17 and is provided to face the rotating brush 17.

In the opening 6, the portion located at the bearing 20 of the rotary brush 17 covers the bearing 20 from below the lower case 3, and the lid 41 supporting the lower case 3 is attached to the lower case 3.
It is mounted so as to be rotatable about a shaft 42 provided.

A boss 43 for supporting the bearing 20 is integrally erected on the lid 41. In addition, shaft holes 44 through which the shaft 42 is inserted are provided with walls 45 and 46 erected on both sides of the lid 41.
It is provided in. Further, the one wall 45 is provided with a fitting hole 47 that engages with a claw portion 48b of the operation body 48 described later. The lid 41 is always urged downward by the spring A42.

Reference numeral 48 denotes an operating body for locking and opening the lid 41. The operating body 48 has an operating portion 48a and a claw portion 48b, and has a rotating shaft 48c between the operating portion 48a and the claw portion 48b. The rotating shaft 48c is provided with a rib 49 provided on the lower case 3.
It is rotatably supported on the shaft. The operating portion 48a is always urged outward by the spring B50, and the upper case 2
And can be pushed inward by a finger from outside.

The normal operation body 48 and the lid 41 are provided with a claw 48b.
And the fitting hole 47 are engaged, and the cover 41 covers and supports the bearing 20. When the cover 41 is opened, the operation portion 48a may be pressed with a finger, and the operation body 48 rotates about the shaft 48c, and the claw portion 48b is detached from the fitting hole 47. Is released by the urging force of the spring A42.

The upper case 2 and the lower case 3 are connected to a plurality of bosses (not shown) provided in the upper case 2 by screws (not shown) inserted through screw holes 52 of the lower case 3.
It is screwed by.

In order to use the suction device configured as described above, the suction device 1 is connected to a hose and an extension pipe communicating with a vacuum cleaner body (not shown), and the cleaner body is operated. The rotation of the rotating brush 17 is transmitted to the transmitted portion 24 by the belt 37 and rotated by the rotation of the electric motor 33 incorporated in the suction tool 1, and is transmitted to the rotating brush 17 to rotate.

The dust on the floor surface is lifted and sucked by the rotation of the rotating brush 17 and the dust-absorbing force of the cleaner body, and is collected in the cleaner body. In this way, when used for a certain period of time, lint and cotton dust may cling to the rotating brush 17.

When dust is entangled with the rotating brush 17, the scraping force is reduced, so that the rotating brush 17 needs to be cleaned. Cleaning of the rotating brush 17, the claw portions 4 8b which has locked the cover 41 by pressing the operation portion 4 8a of the operating body 4 8 is disengaged from the fitting hole 47, the cover 41 is opened.

When the lid 41 is opened, the opening 6 of the lower case 3 is fully opened, and the rotating brush 17 is disposed in the opening 6. To remove the rotating brush 17 from the lower case 3, the bearing 20 is first pulled up from the groove 23 while holding the rotating brush 17, and then the opposite main drive shaft coupling 25 and driven shaft coupling 2 are held.
By disengaging the rotating brush 17 from the lower case 3, the rotating brush 17 can be easily removed from the lower case 3.

Thereafter, in order to mount the rotating brush 17, the reverse operation of the above-mentioned removal may be performed. First, the driven shaft coupling 21 and the driving shaft coupling 25 are engaged, and the bearing 20 on the opposite side is inserted into the groove 23. When the rotary brush 17 is housed in the rotary brush chamber 10 by being inserted, the lid 41 is
Is turned to close.

In one embodiment of the present invention in which the claw portion 48b and the fitting hole 47 are engaged, there is a structure as shown in FIG. That is, the claw portion 48b projects at right angles to the operating body 48, and the fitting hole 4 into which the claw portion 48b fits.
7 is also provided at right angles to the wall 45 that stands upright.

However, by making the relationship between the claw portion 48b and the fitting hole 47 into a structure as shown in FIG. 8, it is possible to make the structure less likely to come off than the structure of FIG. it can. That is, the claw portion 51 projecting from the operation body 48 is provided to have an acute angle with the operation body 48.

On the other hand, a fitting hole 52 for fitting with the claw 51
Is provided on the upper surface 52a with which the claw portion 51 is fitted and abuts.
The same inclination as 1 is provided.

The inclination of the claw portion 51 and the fitting hole 52 is desirably 45 degrees or more as a tangent to an arc around which the operating body 48 rotates about the shaft 48c.

With the above configuration, a force acts on the claw portion 51 in the direction of insertion into the fitting hole 52 by the spring B50 for urging the operation portion 48a. The fitting hole 52 of the lid 41 always exerts a force on the lower side, that is, the direction in which the claw portion 51 is pressed by the spring A42.

The surfaces 51a and 52a where the claw portions 51 and the fitting holes 52 come into contact with each other have an inclination of 45 degrees or more. Each point of the contact surface 51a on which the claw portion 51 rotates about the shaft 48c is necessarily the contact surface 52a of the fitting hole 52.
Draw a trajectory so that it is difficult.

As a result, the spring B
50 in the direction of insertion into the fitting hole 52 and the fitting hole 52
When the claw portion 52 moves in the direction in which the claw portion 52 is to be disengaged by the fitting surface 52a, the contact surface 51a and the contact surface 5a are pressed.
A force for preventing the movement is acting by the contact with 2a.

Since the detachment of the claw portion 51 due to vibration and shock during cleaning is prevented by the above three acting forces, the claw portion 51 is less likely to come off than before.

[0046]

Since the present invention is configured as described above, it has the following effects. Simply <br/> formed open lid mechanism compartment, simply and easily rotating brush opening for dust suction
Can be removed from mouth .

Further, since it is not necessary to remove parts other than the rotary brush from the suction tool, the parts can be prevented from being lost, and the trouble of attaching and detaching the parts can be reduced.

Further, by providing a slope at the contact surface between the claw portion and the fitting hole, it is possible to further prevent disengagement of the claw fitting due to vibration or impact during cleaning.

[Brief description of the drawings]

FIG. 1 is a cross-sectional plan view of an essential part of a floor suction tool of the present invention, from which an upper case is removed.

FIG. 2 is a sectional view taken along the line AA in FIG.

3 is a bottom view of FIG.

FIG. 4 is a sectional view taken along the line CC in FIG. 3;

FIG. 5 is an external perspective view of the lid.

FIG. 6 is a sectional view of a main part of the bearing part.

FIG. 7 is a cross-sectional view of a main part of an embodiment of the claw portion fitting of the present invention.

FIG. 8 is a cross-sectional view of a main portion of another embodiment of the claw portion fitting of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floor suction tool 2 Upper case 3 Lower case 6 Dust suction opening 17 Rotary brush 20 Bearing 41 Lid 48 Operating body 48a Operating part 48b, 51 Claw part 47, 52 Fitting hole 51a, 52a Contact surface

Claims (2)

(57) [Claims] While accommodating 1. A driving apparatus, comprising: a body having a dust suction opening facing the cleaning surface, the rotational component of the body
Is rotatably supported along the opening in the brush chamber, thereby enabling reversible and detachable with respect to the axis, a rotary brush having a driven shaft joint at one end, set in said body
Bell that transmits the torque of the drive to the driven shaft coupling
G, a transmission mechanism such as a driving shaft coupling, and the other end of the rotating brush.
Room for accommodating a bearing assembly that rotatably supports its part
And the mechanism chamber located at the other axial end of the opening.
The cleaning surface side is opened and closed by opening and closing the engagement mechanism.
Lid for attaching and detaching the rotating brush from the opening with
A floor suction device for a vacuum cleaner, comprising: an operating body for opening and closing the lid . 2. The method according to claim 1, wherein the engaging mechanism comprises a claw portion and a fitting hole.
The suction tool for floors of a vacuum cleaner according to claim 1 , wherein the contact surface between the claw portion and the fitting hole is provided with an inclination .