JP3072211B2 - Vacuum cleaner suction body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION This invention is to house the drive apparatus, a body having an opening facing the cleaning surface, rotatably axially supported along the opening in the body, or One detachable And a rotating brush having a driven shaft coupling at one end thereof, and a rotating brush provided in the main body, the rotating force of the driving device.
A belt transmitting to the driving shaft coupling, and a gear transmitting torque to the driving shaft coupling via the belt ;
By transmitting hand rotation to the driven shaft coupling, the rotation
The present invention relates to a suction port of an electric vacuum cleaner for rotating a transfer brush .

[0002]

2. Description of the Related Art A conventional suction opening 1 has a suction section of the present invention.
It has the same configuration as that of FIG.
As shown in FIG. 20, upper case 2, lower case 3, lid 4
A drive pipe 5 is provided at the rear end of the drive pipe 5 so as to be rotatable up and down. Further, a rotatable suction pipe 6 is connected to a tip of the drive pipe 5. The lower case 3 functions as a carpet sled. The lower case 3 has a horizontally long dust-absorbing opening 7 formed at the front lower surface thereof, and a rubber-based sealing material 8 is disposed laterally behind the opening 7. I have. The lower case 3 is provided with front wheels 9a and 9b at a lower front portion and a rear wheel 10 at a rear portion. These wheels 9a and 9b and the rear wheels 10 provide a fixed space between the lower surface of the lower case 3 and the floor surface. A gap is created.

[0003] Inside the suction port body 1, the upper case 2 and the lower case 3 are connected to form a rotary brush chamber 11 and a communication path 12 for communicating the brush chamber 11 with the drive pipe 5, thereby forming a dust suction opening. A dust suction passage from the part 7 to the suction pipe 6 is formed. Mechanism chambers 13 and 14 are formed on both sides inside the suction port main body 1, and a motor room 15 and an outlet (or a control circuit board) are formed inside the suction chambers on both sides of the communication path 12.
A storage chamber 16 is formed, and each of the chambers 13 , 14, 1
Reference numerals 5 and 16 are respectively defined with respect to 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. It is an action. Rotating brush 18 has a structure in which a agitator 19 and bristles 20 to Article 1 or more strip helically on the outer circumferential surface, in the rotary brush chamber 11, protrudes a shaft 21 of the strip side mechanism chamber 14, the Mechanism room 1
4 and rotatably supported by a bearing assembly 22 (see FIG. 19) .

The bearing assembly 22 is shown in FIGS.
The mechanism chamber 14 comprises a bearing 23 and a bearing holder 24.
Is held up and down freely. That is, a pair of opposing ribs 25, 25 are integrally formed on the lower case 3 side constituting the mechanism chamber 14, and the two ribs 25, 25 are integrally formed.
Of the bearing assembly 22 in the groove 26 of the bearing assembly 2
2 can move up and down along the groove 26.

[0006] Also, on the opposite side of the rotating brush 18, FIG.
7, the slave shaft coupling 28 is secured as shown in FIG. 18. Driven shaft coupling 2 8 a front portion thereof is engaged with the driving shaft coupling 29. The transmitted portion 27 transmits the rotation of the electric motor 37.
A main shaft coupling 29 which fits into and disengages from the driven shaft coupling 28, a bearing 30, a gear 31, and a bearing 23 are sequentially press-fitted to the shaft 21a. Then, the ribs 32, 32 bearing 30 of the joint 29 side, which is formed integrally with the lower case 3 of the machine構室13
And the bearing assembly 22 at the other end is also in the lower case 3
Are held in a groove 26 between the ribs 25 formed integrally with the ribs . Na us, bearing Assembly 22 held at both ends of the lower case 3 is biased inwardly by a leaf spring 33 which is interposed between the side wall of the lower case 3.

In FIG. 20, a spring 46 is provided between the upper case 2 and the bearing assembly 22, and the bearing assembly 22 is constantly urged downward. In addition, the rotating brush 18 and the driven portion 27 are coupled with the driven shaft coupling 28 and the driven shaft coupling 29 in a fitted state, and a partition wall between the rotating brush chamber 35 and the mechanism chambers 13 and 14 has: An opening 36 is provided so that the end of the rotating brush 18 can be inserted and the rotating brush 18 can move up and down.

The electric motor 37 is a DC magnet motor, is installed in the electric motor room 15, projects its rotary shaft 38 into the mechanism room 13, and press-fits and fixes the inside of the mechanism room 13.
The gear 39 and the gear 31 of the transmitted portion 27 are connected by a belt 40 and the rotational force of the electric motor 37 is applied to the rotating brush 18.
Is transmitted to

[0009] Also, 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 a vacuum cleaner (not shown) via a power supply cord (not shown).

Next, the cover 4 will be described. FIG. 21, FIG.
In 22, the cover 4 is rotatably attached to the bearing groove under through the shaft 44 casing into the hole 43 provided at both ends of the rear and front wheel 9b on the front surface are press - fit fixation . The lid 4 has, at one end of the side surface, a hole 45 to be fitted and held in a clamp, which will be described later, and the claw portion of the clamp is hooked into the hole 45 so as to be detachably attached to the lower case 3. Installed. Further, a spring 46 is provided in the lower case 3, and serves to protrude the lid 4 from the lower case 3 when the clamp comes off the lid. As shown in FIG.
7 is provided on the bearing ribs 48 of the lower case 3 with its shaft 49.
Is rotatably held, and the claws of the clamp are constantly urged by a spring 50 provided on the upper surface thereof in a direction in which the claws are caught in the holes 45 of the lid 4. The clamp 47 requires a push button portion 51 at an upper portion thereof, and the button portion is viewed from a side surface of the upper case 3.

[0011]

In the suction port having the above-described structure, the main driving shaft coupling that is fitted to and disengaged from the driven shaft coupling of the rotary brush is such that the gear is always pulled toward the electric motor by the tension of the belt. Since the rotating brush has a bearing between the gear and the driving shaft coupling to prevent eccentricity of the rotating brush when the driving shaft coupling is fitted, the driving shaft coupling and the gear must be provided separately, which makes assembly easier. The disadvantage is that the cost of parts is extra, as well as bad. In addition, the opening provided on the lower surface of the suction port is narrowed by the bearing and the driving shaft coupling. As a result, the effective cleaning range for cleaning the floor surface with a rotating brush during cleaning is the entire width of the suction port. Had a disadvantage that it was reduced.

Also, since the bearing is provided on the side of the gear opposite to the main driving shaft joint, there are disadvantages that the assembling property is poor and the parts cost is extra.

Moreover, since the outer periphery of the bearing is shielded by the bearing holder, the heat generated by the high-speed rotation of the shaft is difficult to escape, causing a rise in the temperature of the bearing. Exposure caused deterioration of the resin in the vicinity.

[0014]

As a means for solving the above problems, as a means for accommodating a driving device, a main body having an opening facing a cleaning surface, and a shaft rotatable along the opening in the main body. is supported transmitted, as well as whether one detachable and rotary brush having a driven shaft joint at one end, provided in the body, the rotational force of the drive unit to the driving shaft coupling
A belt, a gear for transmitting a rotational force to the driving shaft coupling via the belt, the slave the rotation of the main shaft joint
The rotating brush is rotated by transmitting to the dynamic shaft coupling.
In the suction port of the vacuum cleaner to the gear and the driving shaft joint was formed integrally gear fittings and without, the gear
Place the bearing guide that holds the joint shaft on the inner surface of the suction port body.
And the gear joint is mounted on the bearing guide.
The gear at the part covered by the gear coupling
Provided.

Moreover, it is formed integrally with the bearing guide for holding the shaft of the gear to the suction port Body. A hole for cooling the bearing is formed in a part of the bearing guide.

[0016]

[Function] At the center where the belt tension is applied on the inner surface of the gear
By holding the gear joint and integrally forming the gear and the driving shaft joint, the assemblability is improved, the parts cost may be reduced, and the opening provided on the lower surface of the suction port body can be widened. In addition, the effective cleaning range in which the cleaning surface is cleaned by the rotating brush during cleaning can be increased with respect to the entire width of the suction opening body.

Further, since the bearing guide for holding the gear shaft is formed integrally with the lower surface of the suction port main body, assemblability is improved and the cost for parts is reduced. Since a bearing cooling hole is provided in a part of the bearing guide, the temperature of the bearing does not rise, so that the deterioration of the bearing and the deterioration of the resin nearby due to the exposure of 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 show an embodiment of the present invention, in which the same parts as those of the conventional suction port are denoted by the same reference numerals.
In FIG. 1, the suction port main body 1 has an outer case composed of an upper case 2, a lower case 3, and a lid 4, and has a drive pipe 5 rotatable up and down at a rear end portion. A rotatable suction pipe 6 is continuously provided. The lower case 3 functions as a carpet sled. The lower case 3 has a horizontally long dust-absorbing opening 7 formed at the front lower surface thereof, and a rubber-based sealing material 8 is disposed laterally behind the opening 7. I have.

[0019] In addition, the front wheel is lower case 3 on the bottom surface front 9 b
And includes a rear wheel 10 at the rear, produces a constant gap between the lower surface and the floor of the lower case 3 by wheels 9 b and the rear wheel 10 before provided on the lid 4 to be described later with these wheels 9a It has become.

A rotary brush chamber 11 and a communication path 12 for connecting the brush chamber 11 to the drive pipe 5 are formed in the interior of the suction port body 1 by coupling the upper case 2 and the lower case 3 to form a dust suction opening. A dust suction passage from the part 7 to the suction pipe 6 is formed. 3 on both sides inside the suction port body 1 .
A motor room 15 and an outlet (or control circuit board) storage room 16 are formed on both sides of the communication path 12 inside the mechanism rooms 13 and 14 as shown in FIG.
Reference numerals 3 , 14, 15, and 16 delimit 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 sealing function of the joint surface of the upper and lower cases 2 and 3 and the cushioning against obstacles. It is an action. The rotating brush 18 has a structure in which an agitator 19 and brush bristles 20 are spirally provided on the outer peripheral surface of the rotating brush brush chamber 11.
The shaft 21 on one side protrudes into the mechanism chamber 14 and is rotatably supported by a bearing assembly 22 in the mechanism chamber 14.

The bearing assembly 22 is shown in FIGS.
The mechanism 23 comprises a bearing 23 and a bearing holder 24 and is held up and down in the mechanism chamber 14. That is, a pair of opposing ribs 25, 25 are integrally formed on the lower case 3 side constituting the mechanism chamber 14, and the bearing assembly 22 is positioned in the groove 26 of the ribs 25, 25. Article 22
Can move up and down along the groove 26.

Further, the slave shaft joint 28 on the opposite side of the rotary brush 18 is fixed. Driven shaft coupling 2 8 has a tooth 28a which teeth 29a and the engagement of the gear coupling 29 to perform the function of the main drive shaft coupling to the front. The gear joint 29 has a joint portion 29b fitted and disengaged from the driven shaft joint 28 at the front portion, a gear portion 30 at the rear portion, and a shaft 21a formed by insert molding. The bearing 31 is as shown in FIG.
The shaft 21 a of the gear joint 29 is rotatably held by a bearing guide 32 formed integrally with the lower case 3.

The bearing guide portion 32 is provided with a cooling hole 33 on its upper surface and a cooling hole 34 on its side surface. Then, the inner surface of the gear coupling 29 and the bearing 31
And washer 35 is interposed between, gear couplings 2
9 is prevented. Note that the partition wall between the rotating brush chamber 35 and a machine chamber 13 and 14, the end portion of the rotary brush 18 is inserted, and, by the degree of opening 36 to allow vertical movement of the rotary brush 18 is provided I have.

The electric motor 37 is a DC magnet motor, is installed in the motor chamber 15, protrudes its axis of rotation 38 of the mechanism chamber 13, a gear 39 which is press fit secured within the mechanism chamber 13, the transmitter 27 gear portion 3 0 and the rotational force of the connected electric motor 37 is rotated by a belt 40 brush 18
Is transmitted to

A bearing assembly 41 is also provided at the end of the rotating shaft 38 of the electric motor 37 and is held in a rib 42 formed integrally with the lower case 3. The electric motor 37 is electrically connected to a main body of a vacuum cleaner (not shown) via a power supply cord (not shown).

Next, the cover 4 will be described. FIG. 12, FIG.
In FIG. 13, the lid 4 is rotatably mounted in a bearing groove of the lower case by passing a shaft 44 through a hole 43 provided at a rear portion of both ends thereof, and a front wheel 9b is press-fitted and fixed to a front surface thereof by a wheel shaft 9C. Have been. In addition, a hole 45 to be described later, which is fitted and held in a clamp, is
The clamp 45 is detachably attached to the lower case 3 by hooking a claw portion of a clamp in the hole 45.

As shown in FIGS. 3, 11, and 13, the lower case 3 is provided with a spring 46. When the clamp comes off from the lid, the lid 4 is detached. , The lower case 3 has a role to protrude. The clamp 47 has its shaft 49 rotatably held by bearing ribs 48, 48 of the lower case 3, and a direction in which the claws of the clamp are always caught in the hole 45 of the lid 4 by a spring 50 provided on the upper surface thereof. Has been energized. The clamp 47 is shown in FIGS.
As shown in FIG. 5, a push button part 51 is required at the upper part, and the button part is seen through the side surface of the upper case 3. The micro SW 52 is fitted in the rib 53 of the lower case 3, and the end 4 a of the lid 4 is brought into contact with the projection 52 a of the micro SW 52 to supply electricity to the electric motor 37.

When using the suction port constructed as described above, the suction port is connected to a hose and an extension communicating with the vacuum cleaner body (not shown), and the vacuum cleaner body is operated. At that time, first, the electric motor 37 is driven, and this electric motor 3
7 the rotational force of the belt 40 to rotate the joint portion 29b through the gear portion 3 0 of the gear coupling 29 provided on the non-transmitting portions 2 7, a rotating brush 18 which is engaged with the joint portion 29b After that, 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 a 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 pressed after the use for a certain period in this way, the claws of the clamp 47 are disengaged from the holes 45 on the side surface of the lid 4 so that the lid 4 is The micro SW 52 is turned off by the spring 46 and is turned off from the lower case 3 to cut off the power supply to the electric motor 37. Thereafter, when the rotating 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 rotating brush 18 can be easily removed from the lower case 3.

When the rotary brush 18 is mounted on the lower case 3, the driven guide coupling 28 provided at one end as shown in FIG.
0a, the teeth 28a of the driven shaft coupling 28 and the teeth 29a of the gear coupling 29 can be easily engaged, and the bearing assembly 22 at the other end is formed integrally with the lower case 3. It can be set by inserting between the ribs 25 and 25 and closing the lid 4.

[0032]

As described above, the present invention has the following advantages. In addition to holding the joint of the gear shaft at the center where the belt tension is applied on the inner surface of the gear, and by integrally forming the gear and the gear joint, the assemblability is improved and the parts cost is reduced. Since the opening provided on the lower surface of the suction port body can be widened, the effective cleaning range for cleaning the cleaning surface with the rotating brush during cleaning can be made larger than the entire width of the suction port body. it can.

Further, since the bearing guide for holding the shaft of the gear is formed integrally with the lower surface of the suction port main body, the assemblability is improved and the parts cost is reduced. Since a bearing cooling hole is provided in a part of the bearing guide, the temperature of the bearing does not rise, so that the deterioration of the bearing and the deterioration of the resin nearby due to the exposure of oil contained in the bearing are prevented.

[Brief description of the drawings]

FIG. 1 is a 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) of the present invention from which an upper case is removed.

FIG. 4 is an enlarged view of a main part in FIG. 3;

FIG. 5 is a sectional view taken along the line AA in FIG. 4;

6 is a sectional view taken along the line BB in FIG. 4;

FIG. 7 is a side view taken along arrow C in FIG.

FIG. 8 is a perspective view showing a bearing guide portion of FIG. 4;

9 is a sectional view taken along the line DD in FIG. 8;

FIG. 10 is a partial sectional view of FIG.

11 is a 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 as viewed from the bottom.

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

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

FIG. 15 is an enlarged sectional view showing a state in which the suction port of the present invention is fitted to the lid 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) of the conventional invention with the upper case removed.

18 is a partially enlarged view of FIG.

19 is a partially enlarged view of FIG.

20 is a sectional view taken along the line FF in FIG. 19;

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

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

FIG. 23 is a cross-sectional view showing a state where the clamp is connected to a lid.

[Explanation of symbols]

2 rotating brush 3 motor 2 upper case 4 lid 4a projection 3 lower case 9a front wheel 22 bearing assembly 26 bearing 28 driven shaft coupling 28a driven shaft coupling teeth 29 gear coupling 29a gear coupling teeth 3 1 bearing 30a bearing guide 30b Lower surface of bearing guide 32 Bearing guide part 33 Hole

Claims (3)

(57) [Claims] While accommodating 1. A driving device comprising a body having an opening facing the cleaning surface, together with the along the opening in the body is rotatably supported, either One is detachably mountable, one end A rotating brush having a driven shaft coupling, and provided in the main body, for transmitting the rotational force of the driving device to the main driving shaft coupling.
A belt, a gear for transmitting a rotational force to the driving shaft coupling via the belt, the slave the rotation of the main shaft joint
The rotating brush is rotated by transmitting to the dynamic shaft coupling.
In the suction opening of the vacuum cleaner, the gear and the driving shaft joint are integrally formed to form a gear joint, and a bearing guide for holding the shaft of the gear joint is sucked.
The gear joint is integrally formed on the inner surface of the
The gear that covers the gear joint
A suction port body for a vacuum cleaner , wherein the belt is provided on the suction port. 2. A suction port body for an electric vacuum cleaner according to claim 1 , wherein a bearing of said gear joint is press-fitted into said bearing guide. 3. A suction port body for an electric vacuum cleaner according to claim 2, wherein a hole for cooling the bearing is formed in a part of said bearing guide.