JP2860005B2 - Vacuum cleaner suction body - 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 port of a vacuum cleaner having a rotating brush, and more particularly to a structure capable of washing the rotating brush with water.

[0002]

2. Description of the Related Art As shown in FIGS. 9 and 10, a conventional suction port body 51 is provided with a driving device 53 such as an electric motor in a main body 52 and a rotary brush chamber provided with a suction opening 54 facing the floor. 55, a rotating brush 56 is disposed in the rotating brush chamber 55, and a driving device 53 and the rotating brush 5 are formed.
The transmission portion 57 of the gear provided at one end of the gear 6 is linked with a belt 58 as transmission means.

The rotary brush 56 has a rotary shaft 60 at both ends, and the rotary shaft 60 is supported by a bearing 62 supported by a bearing support 61. The bearing 62 has a bearing metal 62a inside and rotatably holds the rotating shaft 60. The rotating brush 56 is rotated by the rotating force of the driving device 53, and the dust on the floor surface such as a carpet is rotated. However, depending on the type of refuse or long-term use, lint or cotton garbage is entangled with the brush bristles 56a of the rotating brush 56. In particular, when lint is entangled, the rotating brush may not rotate. In such a case, the rotating brush 56 can be detached from the rotating brush chamber 55 from the opening 59 by removing the lid 58 formed on the upper part of the main body so as to remove entangled dust. I have.

When removing the rotating brush 56, the lid 5
8, the transmitted portion 57 and the bearings 62, 6
Holding the rotating brush 56 with the belt 2 attached, the belt 5
8 and lifted the belt 58 to the transmitted portion 57
Withdraw. The detached rotating brush 56 is the brush bristles 5
The lint, cotton litter, and the like attached to 6a were removed by hand or with a toothbrush.

Since sand and mud adhering to the rotating brush 56 are difficult to remove, they have been washed with water for easy removal.

[0006]

When the rotating brush is washed with water in the suction port having the above-described structure, the rotating shaft 60 has the bearing metal 62a at both ends thereof.
Water enters the fitting portion between the bearing metal 62a and rust, and rust is generated. There is no gap between the rotating shaft 60 and the bearing metal 62a, so that the rotating brush 56 does not rotate.

[0007]

According to the present invention, there is provided an electric motor, a belt for transmitting the rotation of the electric motor, a driving unit for transmitting the rotation of the belt to the rotating brush, and a driving unit. A main body having an opening facing the cleaning surface, and a main body having an opening opposed to the cleaning surface, rotatably supported along the opening in the main body, reversible in its axial direction, and detachable, In the suction opening body of a vacuum cleaner having a rotating brush having a connected part fitted to the connecting means at one end, and a bearing comprising a bearing and a bearing holder closed at one end, A bearing is provided on the bearing side of the rotating brush on the closed side of the bearing holder, an oil seal is provided in front of the bearing, and a through hole is provided on the opening side peripheral wall of the bearing holder.

[0008]

Since the rotary shaft is provided with the oil seal, the rotary brush can be washed with water.

Further, since a water draining hole is provided in the bearing portion, water that has entered the inside of the bearing holder can be quickly discharged by washing with water, so that the drying time after washing with water can be shortened.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 8 show an embodiment of the present invention, in which a suction port main body 1 is constituted by an upper case 5 and a lower case 6 and has a drive pipe 8 rotatable vertically at a rear end thereof. Further, a rotatable suction pipe 9 is connected to the tip of the driving pipe 8. The lower case 6 acts as a sleigh for a carpet, has a horizontally long dust-absorbing opening 10 formed in the front lower surface thereof, and a rubber-made sealing material 11 is provided behind the opening 10.
Are arranged laterally.

The lower case 6 has a front wheel 12
A rear wheel 13 at the rear, and these wheels 12, 13
Thus, a certain gap is formed between the lower surface of the lower case 6 and the floor surface.

The interior of the suction port main body 1 is formed by connecting the upper case 5 and the lower case 6 to form a rotary brush chamber 14 and a communication path 15 for connecting the brush chamber 14 to the drive pipe 8 side. A dust suction passage from the part 10 to the suction pipe 9 is formed.

On both sides inside the suction port main body 1, a mechanism chamber 16,
A motor chamber 18 and an outlet (or control circuit board) storage chamber 19 are formed on both sides of the communication path 15 inside the communication path 15. Each of the chambers 16 to 19 is partitioned with respect to the dust suction passage. Have been.

Reference numeral 21 denotes a bumper which is sandwiched between the upper and lower cases 5 and 6 and is located on the outer periphery of the suction port main body 1. The bumper 21 has a function of sealing the connecting surfaces of the upper and lower cases 5 and 6 and a function of buffering obstacles. What it does.

The rotating brush 2 has a structure in which an agitator 22 and brush bristles 23 are provided in one or a plurality of spiral strips on the outer peripheral surface.
4 protrudes into the mechanism chamber 17 and is rotatably supported by a bearing assembly 25 in the mechanism chamber 17.

The bearing assembly 25 comprises a bearing 26, an oil seal 26a, and a bearing holder 27, and is held up and down in the mechanism chamber 17. That is, the mechanism room 17
A pair of ribs 2 facing each other on the lower case 6 side
9 and 29 are integrally formed, and the grooves 3 of both ribs 29 and 29 are formed.
The bearing assembly 25 is positioned inside the groove 0 so that the bearing assembly 25 can move up and down along the groove 30.

The bearing assembly 25 is rotatably mounted on a brush holder 2a fixed to the bearing assembly 25 side of the rotating brush 2 and has a leading end of the bearing holder 27 with respect to the rotating brush shaft 24 direction. A protrusion 27a provided on the outer periphery, and a brush holder 2a opposed to the protrusion 27a.
Is attached so as not to come off at a projection 2b provided on the inner periphery of the.

The oil seal 2 is mounted on the bearing holder 27.
6a and the holes 27b for draining water are provided, so that even if the rotating brush 2 is washed with water, the intrusion of water into the bearing metal 26 is prevented, and the water that has entered between the brush holder 2a and the bearing holder 27 Easily fits the drain hole 2
Water can be drained from 7a, and the time from washing to reuse can be reduced.

The other end of the rotating brush 2 has a transmitted portion 4
A driven shaft coupling 41 that fits in and disengages with 0 is fixed. The driven portion 40 includes a main driving shaft coupling 40a that fits into and disengages from the driven shaft coupling 41 on the shaft 24a, the bearing 28, the gear 35, and the bearing 26.
Are press-fitted in order. And, the driving shaft coupling 40a
The bearing 28 on the side is held in ribs 39, 39 formed integrally with the lower case 6 of the mechanism chamber 16, and the bearing assembly 2 at the other end is
5 is a rib 29, 2 which is also formed integrally with the lower case 6.
9 are held in grooves 30 between them.

The bearing assembly 25 held at both ends of the lower case 6 is urged inward by a leaf spring 42 interposed between the bearing assembly 25 and the side wall of the lower case 6. Further, the lid 5a and the bearing assembly 2 in which the spring 31 forms the position of the upper case 5
5, the bearing assembly 25 is constantly urged downward.

The rotating brush 2 and the transmitted portion 40 are connected to each other in such a manner that the protrusion 41a of the driven shaft coupling 41 and the groove 40b of the main driving shaft coupling 40a are fitted and disengaged.
An opening 32 is provided in a partition wall between the rotary brush 4 and the mechanism chambers 16 and 17 so that the end of the rotary brush 2 can be inserted therein and the rotary brush 2 can move up and down.

The electric motor 3 is a DC magnet motor, is installed in the electric motor room 18, projects its rotating shaft 33 into the mechanism room 16, and press-fits and fixes the gear 35 of the transmitted part 14 in the mechanism room 16. The rotation of the electric motor 3 is transmitted to the rotating brush 2.

An anti-vibration rubber 3a is wound around the outer periphery of the electric motor 3, and the anti-vibration rubber 3a is pressed by a rib 6a provided on the lower case 6 and a rib (not shown) of the upper case 5. Have been. Outside air sucked from an intake port (not shown) provided at the rear of the main body 1 flows in the direction of the arrow, and passes through the inside of the motor 3 from the motor room 18 to cool the motor 3.

The rotating shaft 33 of the electric motor 3 is supported by a bearing assembly 37 provided in a rib 43 formed integrally with the lower case 6.

The electric motor 3 is electrically connected to a main body of a vacuum cleaner (not shown) via a power supply cord (not shown).

Next, the lid 5a will be described. Knobs 44 slidable in the longitudinal direction are provided at both ends of the upper surface of the lid 5a.
The knob 44 is integrally provided with an engaging projection (not shown). By operating the knob 44, the engaging projection (not shown) is attached to and detached from an engaging section (not shown) provided on the main body 1. You.

When cleaning the rotary brush 2 of the suction opening configured as described above, the cover 5a is removed, and first,
When the rotating brush 2 is slid to the side opposite to the belt 36, the leaf spring 42 is compressed, and the rotating brush 2 slides by the amount of the compression, whereby the driven shaft joint 41 provided on the rotating brush 2 and the transmitted portion 40 Is disengaged from the lower case 6 by lifting the rotating brush 2 upward.

The lint and the entangled cotton dust and the like from the rotating brush 2 thus removed can be removed with a small brush such as a toothbrush, and the attached sand and mud can be removed by washing with water.

[0029]

As described above, the present invention has the following advantages. Since the shaft of the rotating brush has an oil seal and a hole for draining water in the bearing holder, water is prevented from entering the bearing metal part, and water that has entered the brush holder is easily removed from the hole. Since it can be discharged, the time from washing of the rotating brush with water to re-use can be reduced.

Therefore, since the rotating brush can be always washed with water, it is possible to use a rotating brush with little adhesion of sand and mud, and there is a ripple effect that the cleaning surface can be more beautifully cleaned.

[Brief description of the drawings]

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

FIG. 2 is a plan view (partial cross section) of the first embodiment of the present invention with the upper case removed.

3 is an enlarged view of a main part on the electric motor side in FIG. 2;

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

FIG. 5 is an enlarged view of a main part on the bearing holder side in FIG. 2;

FIG. 6 is an enlarged view of a main part of the bearing holder.

FIG. 7 is an external view of a bearing holder of the present invention.

FIG. 8 is an external perspective view of a driving and driven joint.

FIG. 9 is a plan view of a conventional suction port body excluding an upper portion of a main body.

10 is an exploded perspective view of FIG. 9;

[Explanation of symbols]

 2 rotating brush 2a brush holder 3 electric motor 5 upper case 5a lid 6 lower case 25 bearing assembly 26 bearing 26a oil seal 27 bearing holder 27b hole

Claims (1)

(57) [Claims] An opening for receiving an electric motor, a belt for transmitting the rotation of the electric motor, a driving unit for transmitting the rotation of the belt to the rotating brush, and connecting means for connecting the driving unit, and facing the cleaning surface. A main body having a connected portion rotatably supported along the opening in the main body and detachable, and having a connected portion fitted to the connecting means at one end, and a bearing at the other end. In a suction opening of a vacuum cleaner having a rotating brush provided with a bearing means comprising a holder closed at one end, a bearing is provided on a closed side of the bearing holder of the rotating brush, and an oil seal is provided in front of the bearing. A suction port body for a vacuum cleaner, characterized in that a through hole is provided in an opening side peripheral wall of the vacuum cleaner.