JPH0739492A - Suction port body of vacuum cleaner - Google Patents

Abstract

PURPOSE:To improve an assembling property by forming a gear and main drive shaft joint into one body. CONSTITUTION:In the main body receiving a drive device and provided with an opening opposed to a cleaning surface, a rotary brush is freely rotatably journalled along the opening, a driven shaft joint 28 is provided on one end of the rotary brush and a belt 40 for transmitting a turning force of the drive device to the driven shaft joint 28 and a gear joint 29 formed by integrating the gear and main drive shaft joint through the belt 40, are provided respectively.

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 driving shaft coupling 29 and 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. Further, the bearing guide 30a has a lower surface 30b protruding toward the driven shaft coupling 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-described structure, the driving shaft coupling which is fitted into and disengaged from the driven shaft coupling of the rotary brush, the gear is always pulled toward the electric motor by the tension of the belt. Since the bearing is provided between the gear and the main shaft joint to prevent eccentricity of the rotating brush when the main shaft joint is fitted, the main shaft joint and the gear must be installed separately, and the ease of assembly is improved. Not only was it bad, but it also had the drawback of extra component costs. Further, the opening provided on the lower surface of the suction port is narrowed by the bearing and the main shaft coupling, and as a result, the effective cleaning range for cleaning the floor surface with the brush of the rotating brush at the time of cleaning is the entire width of the suction port. However, it had a drawback that it was less.

Further, since the bearing is provided on the side of the gear opposite to the main shaft joint, it has the drawbacks that the assemblability is poor and the component cost is extra.

Moreover, since the outer circumference of the bearing is shielded by the bearing holder, the heat generated by the high-speed rotation of the shaft is hard to escape and the temperature of the bearing rises, which deteriorates the life of the bearing and the oil contained in the bearing. It caused deterioration of the resin in the vicinity due to the exposure.

[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 that is supported, is reversible in its axial direction, is removable, and has a driven shaft joint at one end, and a belt that is provided in the main body and that transmits the rotational force of the drive device to the driven shaft joint. In the suction port body of the electric vacuum cleaner including the gear that transmits the rotational force to the main shaft joint through the belt, the gear and the main shaft joint are integrally formed.

Further, a main body which houses the drive unit and has an opening opposed to the cleaning surface, and a body which is rotatably supported in the main body along the opening, is reversible in the axial direction, and detachable. In addition, a rotary brush having a driven shaft joint at one end, a belt provided in the main body for transmitting the rotational force of the drive device to the driven shaft joint, and transmitting the rotational force to the main shaft joint through the belt. In the suction port body of the electric vacuum cleaner having the gear, a bearing guide for holding the shaft of the gear is integrally formed on the lower surface of the suction port body. A hole for cooling the bearing is formed in a part of the bearing guide.

[0016]

[Function] By disposing the bearing in the center of the gear on which the belt is tensioned and by integrally forming the gear and the main shaft joint, the assemblability is improved and the parts cost is small. Since the opening provided on the lower surface of the suction port body can be wide, the effective cleaning range for cleaning the cleaning surface with the brush of the rotating brush at the time of cleaning can be increased with respect to the entire width of the suction port body.

Further, by integrally forming the bearing guide for holding the shaft of the gear on the lower surface of the suction port body, the assembling property is improved and the parts cost is small. Since the bearing cooling hole is provided in a part of the bearing guide, the temperature of the bearing does not rise and the deterioration of the bearing and the deterioration of the resin in the vicinity due to the exposure of the oil contained in the bearing are prevented.

[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 gear coupling 29 at the front thereof.
It has teeth 28a that fit with. The gear joint 29
The front portion has a joint portion 29b that is fitted into and removed from the driven shaft joint 28, and the gear portion 30 is integrally formed at the rear portion.
Is insert molded. The bearing 31 is press-fitted and held in a bearing guide 32 formed integrally with the lower case 3, and rotatably holds the shaft 21a of the gear joint 29.

The bearing guide portion 32 is provided with a cooling hole 33a on its upper surface and a cooling hole 33b on its side surface. A washer 34 is interposed between the inner surface of the gear joint 29 and the bearing 26 to prevent wear of the gear joint 29. The rotary brush 18, the driven shaft joint 28, and the gear joint 29 are arranged in the rotary brush chamber 3
The rotating brush 18 is provided on the partition wall between the machine 5 and the machine rooms 13 and 14.
Is provided with an opening 36 through which the end 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 and is press-fitted and fixed to the gear 31 of the transmitted portion 27 in the mechanism chamber 13. 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 integrally formed with 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).

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 and an extension communicating with the main body of the electric vacuum cleaner (not shown), and the main body of the vacuum cleaner is operated. At that time, first, the electric motor 37 is driven, and the electric motor 3 is driven.
The rotational force of 7 rotates the joint portion 29b via the belt 40 and the gear portion 30 of the gear joint 29 provided on the non-transmission portion 29, and the rotary brush 18 engaged with the joint portion 29b is rotated. Then, dust on the floor surface to be cleaned is scraped out by the agitator 19 and the brush bristles 20, and the dust is collected in the cleaner body (not shown) through the opening 7, the connecting path 22, and the suction pipe 6.

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. After that, when the rotary brush 18 is pulled, the engagement between the driven shaft joint 28 and the gear joint 29 provided on the transmitted portion 27 is released, and the rotary 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.
The tooth 28a of the driven shaft coupling 28 and the tooth 29a of the gear coupling 29 can be easily engaged with each other by mounting the bearing assembly 30 on the lower surface 30b of the bearing guide 30a which is still attached to the bearing assembly 22 at the other end. It can be set by inserting it between the ribs 25 formed integrally with the lower case 3 and closing the lid 4.

[0032]

Since the present invention is constructed as described above, it has the following effects. By arranging the bearing at the center where the belt is tensioned on the inner surface of the gear and by integrally forming the gear and the gear joint, the assemblability is improved and the cost of parts may be reduced. Since the opening provided on the lower surface is wide, the effective cleaning range for cleaning the cleaning surface with the brush of the rotating brush at the time of cleaning can be increased with respect to the entire width of the suction port body.

Further, by integrally forming the bearing guide for holding the shaft of the gear on the lower surface of the suction port main body, the assembling property is improved and the parts cost is small. Since the bearing cooling hole is provided in a part of the bearing guide, the temperature of the bearing does not rise and the deterioration of the bearing and the deterioration of the resin in the vicinity due to the exposure of the oil contained in the bearing are prevented.

[Brief description of drawings]

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

FIG. 2 is a partial cross-sectional view 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 in FIG.

5 is a cross-sectional view taken along the line AA in FIG.

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

FIG. 7 is a side view of arrow C in FIG.

FIG. 8 is a perspective view showing a bearing guide portion of FIG.

9 is a cross-sectional view taken along the line DD in FIG.

10 is a partial cross-sectional view of FIG.

11 is a cross-sectional view taken along the line EE in FIG.

FIG. 12 is an external view of the lower case of the suction port body of the present invention seen from the bottom.

FIG. 13 is a perspective view of the lid of the suction port body of the present invention.

FIG. 14 is a cross-sectional view showing a state in which the suction port body of the present invention is connected to the clamp lid.

FIG. 15 is an enlarged cross-sectional view showing a fitted state of the suction port body of the present invention with the lid body of the micro SW.

FIG. 16 is an external view of a bearing guide of the suction port body of the present invention.

FIG. 17 is a plan view (partial cross section) with the upper case removed according to the conventional invention.

18 is a partially enlarged view of FIG.

19 is a partially enlarged view of FIG.

20 is a sectional view taken along line FF in FIG.

FIG. 21 is an external view of the lower case of FIG. 17 seen from the bottom.

FIG. 22 is a perspective view of a conventional lid body.

FIG. 23 is a cross-sectional view showing a state in which the clamp is coupled with 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 28 driven shaft joint 28a driven shaft joint tooth 29 gear joint 29a gear joint tooth 30 bearing 30a bearing guide 30b bearing Lower surface of guide 32 Bearing guide part 33 hole

Claims (3)

[Claims] 1. A main body which houses a drive device and has an opening facing a cleaning surface, and a body which is rotatably supported in the main body along the opening and is reversible in the axial direction and detachable. In addition, a rotary brush having a driven shaft joint at one end, a belt provided in the main body for transmitting the rotational force of the drive device to the driven shaft joint, and transmitting the rotational force to the main shaft joint through the belt. A suction port body of an electric vacuum cleaner having a gear, wherein the gear and a main shaft joint are integrally formed. 2. A main body which houses a drive device and has an opening facing a cleaning surface, and a body which is rotatably supported in the main body along the opening and is reversible in the axial direction and removable. In addition, a rotary brush having a driven shaft joint at one end, a belt provided in the main body for transmitting the rotational force of the drive device to the driven shaft joint, and transmitting the rotational force to the main shaft joint through the belt. In a suction port body of an electric vacuum cleaner including a gear, a bearing guide for holding a shaft of the gear is integrally formed on a lower surface of the suction port body. 3. The suction port body of the electric vacuum cleaner according to claim 2, wherein a hole for cooling the bearing is formed in a part of the bearing guide.