JPS591638Y2 - vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure for attaching and detaching a rotary brush of a vacuum cleaner, which separates dust adhering to a surface to be cleaned.

BACKGROUND ART With the recent increase in the area where carpets are used on floors, vacuum cleaners designed specifically for carpets or primarily for cleaning carpet surfaces have been developed.

However, in conventional vacuum cleaners that have a rotating brush installed in the suction port of the vacuum cleaner body, the brush is built into the main body and mounted on a shaft, so when the brush is worn out and needs to be replaced, the main body must be disassembled and the brush must be replaced. It took a lot of work to replace it.

The present invention was developed in view of these drawbacks, and consists of a rotary brush mounted on a shaft facing the suction port of the main body of the vacuum cleaner, which is divided into a transmission part attached to the main body and a detachable part attached removably. The two are detachably connected so that the detachable part can be easily removed from the main body, and the connecting part between the detachable part and the transmission part is a threaded hole, a fitting hole facing the screw hole, and a threading through this fitting hole. The screw screwed into the hole can be attached and detached from the suction port side of the main body, making it easy to attach and detach the connecting part.

Furthermore, the connecting part of the detachable part that fits into the notch stepped part of the transmission part formed in the connecting part forms a notch in the corner of the surface that becomes inside when rotating, and the detachable part is attached with one end pivoted on the main body as a fulcrum. The purpose is to prevent the corners of the ends from getting in the way when rotating.

Next, embodiments of the present invention will be described with reference to FIGS. 1 and 2 of the accompanying drawings.

1 is a vacuum cleaner main body, and a brush chamber 2, a dust collection chamber 3, and an electric blower chamber 4 are formed sequentially from the front to the rear of the main body 1.

A rotary brush 6 is provided on the lower surface of the brush chamber 2 with a suction port 5 facing the surface to be cleaned opened in the width direction and facing the suction port 5.

The rotary brush 6 consists of a brush shaft 7 and brushes 8 attached to the brush shaft 7, and one of the support shafts 9°9 protruding from both ends of the brush shaft 7 projects inward from one side wall 11 of the brush chamber 2. The shaft is rotatably supported via a bearing 45 on a bearing boss 12 having an annular rubber layer 10 therein, and the other side is provided with a transmission space 1 on one side of the vacuum cleaner body 1.
Bearing boss 1 of partition wall 14 provided to form 3
A bearing boss 15 is rotatably mounted on the bearing boss 15 via a bearing 45.
A pulley 17 is mounted on the protruding shaft 16 of the support shaft 9 which protrudes further into the transmission space 13 .

The brush shaft 7 is divided into a transmission part 18 and a detachable part 19 at a position near the side where the pulley 17 is attached.

The divided transmission part 18 and detachable part 19 are provided with a cutout step part 22.2 so as to leave a connecting part 20.21 that fits vertically with each other.
3 is formed, a tapped hole 24 is formed in the upper connecting portion 20, a fitting hole 25 communicating with the screw hole 24 is formed in the lower connecting portion 21, and a screw 26 is inserted from the lower surface of the fitting hole 25. Screw into the screw hole 24.

Next, the dust collection chamber 3 communicates with the rear of the brush chamber 2 through a ventilation passage 29, and the ventilation passage 29 communicates with the suction port 5 through a ventilation gap 30 around the rotating brush 7.

An insertion port 32 that is sealed with an opening/closing lid 31 is formed in the upper part of the dust collection chamber 3, and a filter 33 that is inserted into and removed from the insertion port 32 in a cassette manner is installed in the dust collection chamber 3.

The opening of the filter 33 is airtightly connected to the opening 34 of the dust collection chamber 3 which faces the ventilation path 29.

Next, the electric blower chamber 4 is formed behind the dust collection chamber 3 and houses an electric blower 35 serving as an electric motor, and also sucks air through an intake hole 37 formed on one side of a partition wall 36 from the dust collection chamber 3 for cleaning. The air is exhausted from an exhaust port 39 formed in the rear wall plate 38 of the machine body 1.

Furthermore, one end of the rotating shaft 40 of the electric blower 35 is connected to the transmission space 13.
The rotary brush 7 is connected to the pulley 17 of the rotary brush 7 via a belt 41.

The vacuum cleaner body 1 has a case member 42.4 that is divided into left and right parts.
2, and is provided with wheels 43 and a handle 44.

Next, the operation of this embodiment will be explained.

As the electric blower 35 is driven, the rotary brush 7 is simultaneously rotated via the belt 41° pulley 17, and the dust adhering to the surface to be cleaned, such as a carpet, is separated from the surface to be cleaned and sucked in through the suction port 5, and is sucked through the air passage 29. Filter 33 of dust collection chamber 3
The filtered air is discharged from the exhaust port 39 of the electric blower chamber 35.

When replacing the brushes 8 of the rotary brush 6 due to wear, etc., operate the screw 26 from the suction port 5 and unscrew it from the connecting portion 20, and the connecting portions 20 and 21 will be uncoupled. As shown in the figure, the attachment/detachment portion 19 is removed by rotating it downward to cause the support shaft 9 to escape from the bearing boss 12.

During installation, the support shaft 9 of the detachable part 19 is inserted into the bearing boss 12, and the other end connecting part 21 is rotated upward from below to engage with the notched step part 22 of the interlocking part 18.

At this time, the rubber layer 10 acts as a buffer for the bearing 45 on the attachment/detachment side, so that no strain occurs.

Next, the embodiment shown in FIG. 3 will be explained.
Attachment/detachment part 19 is attached to the upper end corner of 1 with the shaft mount of support shaft 9 as a fulcrum.
Notches 27 and 28 are formed to provide a radius of rotation such that the corners do not get in the way when the handle is rotated.

According to this embodiment, a notch 27 is provided at the tip corner of the detachable portion 19.
28 is formed, the tip corner part will not collide with the transmission part 18 when the shaft 9 is rotated as a fulcrum during attachment and detachment.

In the above embodiment, the power for the rotary brush 6 is obtained from the electric blower 35, but a separate electric motor exclusively for the rotary brush 6 may be installed.

Further, in the above embodiments, the brushes 8 are also installed in the transmission part 18, but there are cases where the brushes 8 are not installed in the transmission part 18.

According to the present invention, a rotary brush facing the surface to be cleaned of a vacuum cleaner main body is connected to an electric motor by having one end rotatably mounted on the main body and a detachable part having one end rotatably mounted on the main body. Since the two parts are separated from the transmission part and removably connected to each other at the mutual connection part, if the mutual connection parts are connected and the detachable part and the transmission part are connected, the rotary brush can be integrated from the detachment part and the transmission part. The transmission part, which is configured and rotatably mounted on the main body of the vacuum cleaner, has a
Since the rotational force from the electric motor connected to this is reliably transmitted, it is possible to rotate the vacuum cleaner. It can be easily removed from the main body, and when the brush becomes worn, a part of the transmission part of the rotary brush remains in the main body and the detachable part can be easily replaced with a new one without having to separate the main body of the vacuum cleaner. I can do it.

In addition, the connecting part between the attachment/detachment part and the transmission part consists of a tapped hole and a screw that is screwed into the tapped hole through a fitting hole facing this, and the screw is inserted from the suction port side, so that the screw cannot be operated. Workability is good because it is performed from the large-opening suction port side.

Furthermore, when the removable part whose one end is pivoted on the main body is rotated upward as shown in Fig. 3 and the connecting part is fitted into the notch stepped part of the transmission part, a notch is formed at the corner of the connecting part. Because the corners are not in the way, workability is good and there is no risk of straining the bearings.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional side view of a vacuum cleaner showing an example of the implementation of the present invention, Fig. 2 is an enlarged longitudinal sectional front view of the same brush chamber, and Fig. 3 is a longitudinal sectional view of the brush chamber showing an embodiment of the same. It is a front view. 1... Vacuum cleaner body, 7... Rotating brush,
18...Transmission part, 19...Detachable part, 2
0.21... Connecting portion, 22... Notch step, 24... Screw hole, 25... Fitting hole, 26...・Screw, 27.28...Notch, 35...Electric blower that serves as the electric motor.

Claims (3)

[Scope of utility model registration request] (1) A vacuum cleaner body with a built-in electric motor, and a rotary brush that is rotatably mounted on a shaft facing the surface to be cleaned of the vacuum cleaner body and is rotated by the electric motor to remove dust stuck to the surface to be cleaned. The rotary brush has one end rotatably mounted on the vacuum cleaner main body, a connecting portion formed at the other end, a transmission portion connected to the electric motor, and a transmission portion attached to and detachable from the connecting portion at one end. 1. A vacuum cleaner characterized in that a connecting part is formed to be connected to the vacuum cleaner body, and the other end is connected to a detachable part which is attached to and detachably attached to the vacuum cleaner main body. (2) A threaded hole is formed in the connection part of the transmission part, a fitting hole is formed in the connection part of the detachable part facing the threaded hole, and the fitting hole is formed in the connection part of the vacuum cleaner body from the suction port side of the vacuum cleaner body. The vacuum cleaner according to claim 1, which is a registered utility model, characterized in that a screw is screwed into the tapped hole through the hole. (3) Claim (1) of the utility model registration characterized in that the connection part of the detachable part of the rotary brush has a notch formed in the corner part to be fitted into the notch stepped part formed in the transmission part. The vacuum cleaner mentioned.