JPH078422A - Suction port body of vacuum cleaner - Google Patents

Abstract

PURPOSE:To enhance the safety by turning ON and OFF a driving device for a rotary brush by interlocking with opening and closing of a cover body for attachment/detachment of the rotary brush, in the suction port body in which the rotary brush turned by the driving devices is provided so as to be freely attachable and detachable. CONSTITUTION:The suction port body contains a rotary brush 18 in a rotary brush chamber in the suction port main body, the shaft of one side of this rotary brush 18 is supported by a bearing assembly 22 disposed in a mechanism chamber 14, and the shaft of the other side is connected to a part to be transmitted, so as to be freely detainable and detachable through a driven side shaft joint. Also, in the lower case of the suction port main body, a cover body 4 for supporting the front wheel 9b is attached on one end side so as to be freely openable and closeable around a shaft 44 in a bearing groove, and in a closed state of the cover body 4 for placing the bearing assembly 22 in a set state, an end part 4a of the cover body 4 executes an ON-operation of a microswitch SW 52, by which a driving device can be energized. Moreover, when the cover body 4 is opened by depressing a push-button 51 of a clamp 47, the SW 52 is turned off and electric conduction of the driving device is cut off.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a main body for accommodating a drive unit and having an opening facing a cleaning surface, and a main body rotatably supported in the main body along the opening and inverted in the axial direction. A rotary brush that has a driven shaft joint that is capable of being attached and detached, and that has a driven shaft joint that is provided in the main body and that transmits the rotational force of the drive device to the driven shaft joint, and a main shaft joint. The present invention relates to a suction port body of an electric vacuum cleaner in which a lid body for attaching and detaching the rotating brush is provided on a lower surface of the suction port.

[0002]

2. Description of the Related Art As shown in FIGS. 12 to 18, a conventional suction inlet body 1 includes a suction inlet body 1 having an upper case 2, a lower case 3,
An outer appearance is constituted by the lid body 4, a drive pipe 5 which is rotatable up and down is provided at a rear end portion, and a rotatable suction pipe 6 is connected to the tip of the drive pipe 5. The lower case 3 acts as a sled for a carpet, and has a laterally long dust collecting opening 7 formed in the front portion of the lower surface thereof, and a rubber sealing material 8 is arranged in the lateral direction behind the opening 7. There is. Further, the lower case 3 has front wheels 9a and 9b on the front portion of the lower surface and rear wheels 1 on the rear portion.
0, the wheels 9a and 9b and the rear wheel 10 form a constant gap between the lower surface of the lower case 3 and the floor surface.

Inside the suction port body 1, a rotary brush chamber 11 and a communication path 12 for communicating the brush chamber 11 with the drive pipe 5 are formed by connecting the upper case 2 and the lower case 3 to each other to form a dust suction opening. A dust suction passage extending from the portion 7 to the suction pipe 6 is formed. Mechanism chambers 13 and 14 are formed on both inner sides of the suction port body 1, and on the inner sides thereof, on both sides of the communication path 12, a motor chamber 15 and an outlet (or a control circuit board).
A storage chamber 16 is formed, and the chambers 13 to 16 are partitioned from the dust suction passage.

Reference numeral 17 denotes a bumper which is sandwiched between the upper and lower cases 2 and 3 and is located on the outer periphery of the suction port main body 1. The bumper 17 seals the coupling surfaces of the upper and lower cases 2 and 3 and buffers against obstacles. It is a function. The rotary brush 18 has a structure in which an agitator 19 and brush bristles 20 are provided on the outer peripheral surface in a single or multiple spiral shape.
A shaft 21 on the inner side projects into the mechanism chamber 14 and is rotatably supported by a bearing assembly 22 in the mechanism chamber 14.

The bearing assembly 22 is composed of a bearing 23 and a bearing holder 24 and is held in the mechanism chamber 14 so as to be vertically movable. That is, the lower case 3 that constitutes the mechanism chamber 14
A pair of ribs 25, 25 facing each other on the side are integrally formed, and the bearing assembly 22 is positioned in the groove 26 of both ribs 25, 25, and the bearing assembly 22 moves up and down along the groove 26. You can do it.

On the opposite side of the rotary brush 18, a driven shaft joint 28 which is fitted into and disengaged from the transmitted portion 27 is fixed.
The driven shaft joint 24 is fitted with the main shaft joint 29 at its front portion. The transmitted portion 27 has a shaft 21a and the driven shaft coupling 28.
A main shaft coupling 29, a bearing 30, a gear 31,
The bearing 23 is press-fitted and supported in order. And joint 29
The outer side of the bearing 30 on the side is held by the bearing guide 30a and is also held in the ribs 32, 32 formed integrally with the lower case 3 of the mechanism chamber 13, and the bearing assembly 22 on the other end is also the lower case. Ribs 25 integrally formed on the
It is held in a groove 26 between 25. The lower surface 30b of the bearing guide 30a is projected toward the driven shaft joint 28. The bearing assembly 22 held at both ends of the lower case 3 is biased inward by a leaf spring 33 interposed between the bearing assembly 22 and the side wall of the lower case 3.

A spring 34 is provided between the upper case 2 and the bearing assembly 22 so that the bearing assembly 22 is always urged downward. The rotary brush 18 and the transmitted portion 27 are connected with the driven shaft joint 28 and the main shaft joint 29 in a fitted state, and the partition wall between the rotary brush chamber 35 and the mechanism chambers 13 and 14 is An opening 36 is provided so that the end portion of the rotary brush 18 is inserted and the vertical movement of the rotary brush 18 is allowed.

The electric motor 37 is a DC magnet motor, which is installed in the electric motor chamber 15 and has its rotating shaft 38 projecting into the mechanism chamber 13 in which the gear 31 of the transmitted portion 27 is press-fitted and fixed. The generated gear 39 is connected by a belt 40, and the rotating force of the electric motor 37 is applied to the rotating brush 18.
Be transmitted to.

A bearing assembly 41 is also provided at the tip of the rotary shaft 38 of the electric motor 37, and is held in a rib 42 that is integrally formed and partitioned in the lower case 3. The electric motor 37
Is a power cord (not shown) on the vacuum cleaner body
Are electrically connected via.

Next, the lid 4 will be described. This lid 4
Is rotatably attached to the bearing groove of the lower case by passing the shaft 44 through the holes 43 provided at the rear portions of both ends thereof, and the front wheel 9b is press-fitted and fixed to the front surface thereof by the wheel shaft 9C. Further, the lid body 4 has a hole 45, which will be described later, fitted and held in a clamp at one end of the side surface.
It is detachably attached to the lower case 3 by catching the claw of the clamp. Further, the lower case 3 is provided with a spring 46, which serves to push the lid body 4 out of the lower case 3 when the clamp is disengaged from the lid body. The clamp 47 has a shaft 49 rotatably held by bearing ribs 48, 48 of the lower case 3,
A spring 50 provided on the upper surface of the clamp 4 always urges the claw of the clamp in a direction to be caught in the hole 45 of the lid 4. The clamp 47 requires a push button portion 51 on its upper portion, and the button portion is seen on the side surface of the upper case 3.

[0011]

In the suction port body having the above structure, the rotary brush is attached / detached after the switch for stopping the drive device for the suction port provided on the hose of the vacuum cleaner is turned off. It was necessary to remove the rotary brush from the rotary brush chamber by pressing the clamp provided on the main body, opening the lid, and lifting the side opposite to the driven shaft joint of the rotary brush to separate the driven shaft joint from the main shaft joint. Also, if the drive device for the suction port provided on the hose of the vacuum cleaner is turned on while the lid is not securely engaged, the rotating brush pops out of the rotating brush chamber due to the rotating force of the driving device, which is extremely dangerous. It was something.

In the suction inlet having the above structure, when the floor lock is being cleaned, the clamp for locking the lid provided on the suction inlet main body is disengaged by the impact force on the wall during the cleaning near the wall. The lid has a drawback in that the wheel of the suction opening opens the gap provided between the floor and the floor, and the end of the lid is caught on the floor, or the rotating brush is separated from the suction opening. .

In the suction port body having the above structure, after cleaning the rotary brush, the rotary brush is mounted in the main body by first aligning the teeth of the driven shaft joint with the teeth of the main shaft joint. Although they are fitted to each other, once the driven shaft joint and the main shaft joint are disengaged, it is necessary to align the teeth vertically and horizontally when the teeth are fitted next time, which is very troublesome.

[0014]

As means for solving the above-mentioned problems, as a means for accommodating a drive unit, a main body having an opening facing a cleaning surface and a shaft rotatably in the main body along the opening are provided. A rotating brush supported by the shaft, reversible in the axial direction thereof and detachable, and having a driven shaft joint at one end, and a belt provided in the main body for transmitting the rotational force of the drive device to the gear. In a suction port body of an electric vacuum cleaner having a drive shaft coupling and provided with a lid body for attaching and detaching the rotating brush on a lower surface of the suction port, a drive device for the suction port is operated in association with opening and closing of the lid body.
A control means for turning N and OFF is provided. In addition, a cover wheel provided on the lower surface of the suction port is provided with wheels for moving the floor of the suction port. Further, a bearing guide for fitting / removing the driven shaft joint of the rotary brush is provided on the main shaft joint for transmitting the rotational force of the driving device.

[0015]

The rotating brush can be removed without turning off the switch of the drive device for the suction port provided on the hose of the cleaner, and the hose of the cleaner is provided without the lid being securely engaged. Even if the drive device for the suction port is turned on, the rotary brush does not jump out of the rotary brush chamber due to the rotational force because the drive device is stopped.

Further, during cleaning of the floor surface, even if the clamp, which is provided on the suction port body and locks the lid, is disengaged for a moment by the impact force on the wall at the time of cleaning near the wall, the lid remains Since the wheel of the suction port is pressed against the floor surface, the lid does not open and the brush does not come off from the suction port.

Further, by providing a guide for engaging and disengaging the driven shaft joint of the rotating brush with the driving shaft joint for transmitting the rotational force of the driving device, the direction of the teeth of the driven shaft joint of the rotating brush and the driving shaft. When fitting the teeth of the joint, it is not necessary to position them vertically and horizontally, and they can be fitted easily.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 11 are views showing an embodiment of the present invention, in which the same parts as those of a conventional suction port body are designated by the same reference numerals and described.
The suction port main body 1 has an outer appearance composed of an upper case 2, a lower case 3 and a lid 4, a drive pipe 5 which is vertically rotatable at a rear end thereof, and a rotatable suction port at the tip of the drive pipe 5. The pipe 6 is connected in series. The lower case 3 acts as a sled for a carpet, and has a laterally long dust collecting opening 7 formed in the front portion of the lower surface thereof, and a rubber sealing material 8 is arranged in the lateral direction behind the opening 7. There is.

The lower case 3 has a front wheel 9a on the front surface of the lower surface.
The rear wheel 10 is provided at the rear part, and a constant gap is formed between the lower surface of the lower case 3 and the floor surface by the wheel 9a and the front wheel 9b and the rear wheel 10 provided on the lid 4 described later. It has become.

Inside the suction port main body 1, the upper case 2 and the lower case 3 are connected to each other to form a rotary brush chamber 11 and a communication path 12 for communicating the brush chamber 11 with the drive pipe 5 side. A dust suction passage extending from the portion 7 to the suction pipe 6 is formed. Mechanism chambers 13 and 14 are formed on both inner sides of the suction port body 1, and on the inner sides thereof, on both sides of the communication path 12, a motor chamber 15 and an outlet (or a control circuit board).
A storage chamber 16 is formed, and the chambers 13 to 16 are partitioned from the dust suction passage.

Numeral 17 is a bumper which is sandwiched between the upper and lower cases 2 and 3 and is located on the outer periphery of the suction port body 1, and which seals the connecting surfaces of the upper and lower cases 2 and 3 and buffers against obstacles. It is a function. The rotary brush 18 has a structure in which an agitator 19 and brush bristles 20 are provided on the outer peripheral surface in a single or multiple spiral shape.
A shaft 21 on the inner side projects into the mechanism chamber 14 and is rotatably supported by a bearing assembly 22 in the mechanism chamber 14.

The bearing assembly 22 comprises a bearing 23 and a bearing holder 24 and is held in the mechanism chamber 14 so as to be vertically movable. That is, the lower case 3 that constitutes the mechanism chamber 14
A pair of ribs 25, 25 facing each other on the side are integrally formed, and the bearing assembly 22 is positioned in the groove 26 of both ribs 25, 25, and the bearing assembly 22 moves up and down along the groove 26. You can do it.

On the opposite side of the rotary brush 18, a driven shaft coupling 28 that is fitted into and removed from the transmitted portion 27 is fixed.
The driven shaft coupling 24 has teeth 29a of the drive shaft coupling 29 at its front portion.
It has teeth 28a that fit with. The transmitted portion 27 is a main shaft coupling 2 in which the shaft 21a is fitted in and disengaged from the driven shaft coupling 28.
9, the bearing 30, the gear 31, and the bearing 23 are sequentially press-fitted and supported.

The outer periphery of the bearing 30 on the joint 29 side is held by a bearing guide 30a, and ribs 32, 32 formed integrally with the lower case 3 of the mechanism chamber 13 are held.
The bearing assembly 22 at the other end is held in the lower case 3 as well.
Is held in a groove 26 formed between the ribs 25, 25 integrally formed with each other. The bearing guide 30a has a lower surface 3
0b is projected toward the driven shaft joint 28. The bearing assembly 22 held at both ends of the lower case 3 is biased inward by a leaf spring 33 interposed between the bearing assembly 22 and the side wall of the lower case 3.

A spring 34 is provided between the upper case 2 and the bearing assembly 22 so that the bearing assembly 22 is always urged downward. The rotary brush 18 and the transmitted portion 27 are connected with the driven shaft joint 28 and the main shaft joint 29 in a fitted state, and the partition wall between the rotary brush chamber 35 and the mechanism chambers 13 and 14 is An opening 36 is provided so that the end portion of the rotary brush 18 is inserted therethrough and the vertical movement of the rotary brush 18 is allowed.

The electric motor 37 is a DC magnet motor, which is installed in the electric motor chamber 15 and has its rotating shaft 38 projecting into the mechanism chamber 13 in which the gear 31 of the transmitted portion 27 is press-fitted and fixed. The generated gear 39 is connected by a belt 40, and the rotating force of the electric motor 37 is applied to the rotating brush 18.
Be transmitted to.

A bearing assembly 41 is also provided at the tip of the rotary shaft 38 of the electric motor 37, and is held in a rib 42 that is integrally formed and partitioned in the lower case 3. The electric motor 37
Is a power cord (not shown) on the vacuum cleaner body
Are electrically connected via.

Next, the lid 4 will be described. This lid 4
Is rotatably attached to the bearing groove of the lower case by passing the shaft 44 through the holes 43 provided at the rear portions of both ends thereof, and the front wheel 9b is press-fitted and fixed to the front surface thereof by the wheel shaft 9C. Further, the lid body 4 has a hole 45, which will be described later, fitted and held in a clamp at one end of the side surface.
It is detachably attached to the lower case 3 by catching the claw of the clamp.

Further, the lower case 3 is provided with a spring 46, which serves to push the lid 4 out of the lower case 3 when the clamp is disengaged from the lid. A shaft 47 of the clamp 47 is rotatably held by bearing ribs 48, 48 of the lower case 3, and a spring 50 provided on the upper surface of the clamp 47 always causes the claw of the clamp to be caught in the hole 45 of the lid 4. Is urged by. The clamp 4
7 requires a push button portion 51 on its upper part, and the button portion is seen on the side surface of the upper case 3. The micro SW 52 is fitted into the rib 53 of the lower case 3,
The end 4a of the lid body 4 and the projection 52a of the micro SW 52 are brought into contact with each other to energize the electric motor 37.

When the suction port body constructed as described above is used, the suction port body is connected to a hose communicating with a vacuum cleaner body (not shown) and an extension, and the vacuum cleaner body is operated. At that time, first, the electric motor 37 is driven, and the electric motor 3 is driven.
The rotating force of 7 rotates the driving shaft coupling 29 via the belt 40 and the gear 31 provided on the non-transmission portion 29, and the rotating brush 18 engaged with the driving shaft coupling 29 is rotated, The agitator 19 and the brush bristles 20 scrape off dust on the floor surface to be cleaned, and collect the dust through the opening 7, the connecting path 22, and the suction pipe 6 in a cleaner body not shown.

When the push button 51 of the clamp 47 on the upper surface of the suction port is pushed after being used for a certain period in this way, the claw of the clamp 47 is disengaged from the hole 45 on the side surface of the lid 4, so that the lid 4 is opened. The spring 46 causes the micro SW 52 to be turned off from the lower case 3 and the micro SW 52 to be turned off to cut off the power supply to the electric motor 37. Then, when the rotating brush 18 is pulled, the engagement between the driven shaft joint 28 and the driving shaft joint 29 provided in the transmitted portion 27 is released, and the rotating brush 18 can be easily removed from the lower case 3.

When the rotary brush 18 is attached to the lower case 3, the driven shaft joint 28 provided at one end is attached to the lower case 3.
It is possible to easily engage the teeth 28a of the driven shaft joint 28 and the teeth 29a of the main driving shaft joint 29 by placing the bearing guide 30a on the lower surface 30b of the bearing guide 30a, and the bearing assembly 22 at the other end. Can be set by inserting between the ribs 25 formed integrally with the lower case 3 and closing the lid 4.

[0033]

Since the present invention is constructed as described above, it has the following effects.

When the rotary brush is taken out from the lower case 6, the rotary brush can be removed without turning off the switch of the drive device for the suction port provided in the hose of the cleaner as in the conventional case, and the lid body can be securely attached. Even if the drive device for the suction port provided on the hose of the vacuum cleaner is turned on without being engaged with, the rotary brush prevents the rotary brush from jumping out of the rotary brush chamber because the drive device is stopped. be able to.

Also, during cleaning of the floor surface, even if the clamp that locks the lid provided on the suction port main body is disengaged for a moment due to the impact force on the wall at the time of cleaning near the wall, the lid remains open. It is possible to prevent the lid body pressed against the floor surface from being opened by the wheel of the suction port and the brush from being separated from the suction port.

Further, the drive shaft joint for transmitting the rotational force of the drive unit is provided with a guide for fitting / disengaging with the driven shaft joint of the rotary brush, whereby the tooth orientation of the driven shaft joint of the rotary brush and the drive shaft joint. When the teeth of the joint are aligned, there is no need to align the top, bottom, left and right, and the fitting can be easily performed.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a suction port body of the present invention.

FIG. 2 is also an enlarged view of a main part of FIG.

FIG. 3 is a plan view (partial cross section) with the upper case removed according to the present invention.

FIG. 4 is an enlarged view of a main part of FIG.

FIG. 5 is an enlarged view of a main part of FIG.

6 is a sectional view taken along the line BB in FIG.

FIG. 7 is an external view of the lower case of the present invention seen from the bottom.

FIG. 8 is a view of the lid of the present invention.

FIG. 9 is a state diagram showing a state in which the clamp is connected to the lid body.

FIG. 10 is a view showing a fitted state of the micro SW with the lid.

FIG. 11 is an external view of a bearing guide.

FIG. 12 is a plan view (partial cross section) with the upper case removed according to the conventional invention.

FIG. 13 is an enlarged view of a main part of FIG.

FIG. 14 is an enlarged view of a main part of FIG.

15 is a sectional view taken along line BB in FIG.

16 is an external view of the lower case of FIG. 12 seen from the bottom.

FIG. 17 is a view of a conventional lid.

FIG. 18 is a state diagram showing a state in which the clamp is connected to the lid body.

[Explanation of symbols]

 2 Rotating brush 3 Electric motor 2 Upper case 4 Lid 4a Protrusion 3 Lower case 9a Front wheel 22 Bearing assembly 26 Bearing 38 Bearing 38a Bearing guide 38b Bearing guide lower surface 40 Drive shaft coupling 40a Drive shaft coupling tooth 41 Driven shaft coupling 41a Tooth of driven shaft joint 44 hole 45 shaft 46 hole 47 spring 48 clamp 49 bearing rib 50 shaft 51 spring 53 micro SW 53a protrusion

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[Procedure amendment]

[Submission date] July 20, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

2. The cover body provided on the lower surface of the suction port is provided with a wheel for moving the floor surface of the suction port.
Suction mouthpiece of the vacuum cleaner described.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0027

[Correction method] Change

[Correction content]

Further, the bearing assembly body 41 is also provided at the distal end of the rotary shaft 38 of the motor 37, it is held in the integrated type formed partitioned by ribs 42 on the lower case 3. The electric motor 37 is electrically connected to a main body of an electric vacuum cleaner (not shown) via a power supply cord (not shown).

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] Explanation of code

[Correction method] Change

[Correction content]

[Explanation of symbols] 2 rotating brush 3 electric motor 2 upper case 4 lid 4a protrusion 3 lower case 9a front wheel 22 bearing assembly 26 bearing 28 driven shaft joint 28a driven shaft joint tooth 29 driving shaft joint 29a driving shaft joint tooth 30 bearing 30a bearing guide 30b bearing guide lower surface 4 3 hole 4 4 axis 4 5 hole 4 6 spring 4 7 clamp 4 8 bearing rib 4 9 axis 5 0 spring 5 2 micro SW 5 2 a protrusion

Claims (1)

Claim: What is claimed is: 1. A main body which houses a drive unit and has an opening facing a cleaning surface, and a body which is rotatably supported in the main body along the opening and is inverted in the axial direction. A rotary brush that has a driven shaft joint that is capable of being attached and detached, and that has a driven shaft joint that is provided in the main body and that transmits the rotational force of the drive device to the driven shaft joint, and a main shaft joint. In a suction port body of an electric vacuum cleaner in which a lid body for attaching and detaching the rotating brush is provided on a lower surface of the suction port, a suction port drive device is turned on in conjunction with opening and closing of the lid body,
A suction port body for an electric vacuum cleaner, which is provided with control means for turning it off. 1. The cover body provided on the lower surface of the suction port is provided with a wheel for moving the floor surface of the suction port.
Suction mouthpiece of the vacuum cleaner described. 3. The suction device for a vacuum cleaner according to claim 1, wherein the main shaft coupling for transmitting the rotational force of the drive unit is provided with a bearing guide for fitting / disengaging with the driven shaft coupling of the rotary brush. Mouth.