JPH0810490A - Clutch switching device for dehydration washing machine - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the sealing performance of the fitting surface of the brake wheel and the gear case to prevent grease leakage, stabilize the braking performance, and reduce noise during braking. [Structure] A washing shaft 6 connected to a rotary blade is concentrically arranged on an inner diameter portion of a dehydration shaft 7 connected to a washing / dehydrating tub, and the dehydration shaft 7 is inserted into a brake wheel 10.
An upper bearing that covers the dehydration shaft 7 and is loosely fitted to the lid 13
The lower bearing, which is fitted and fitted to the lower part of the brake wheel 10 and which includes the gear case 11 which is fitted to the lower part of the brake wheel 10, is fitted to the bearing case 14. A brake band 16 is concentrically provided on the outer periphery of the brake wheel 10 so as to be in close contact with the brake wheel 10 at the time of washing and braking, and open at the time of dehydration and drainage. A substantially cylindrical elastic body 23 is bonded to the inner peripheral surface of the brake wheel 10, and a flange portion 24 formed at the lower end of the elastic body 23 is attached to the brake wheel 10.
And the gear case 11 is clamped on the fitting surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clutch switching device for a dehydrating and washing machine used in general households.

[0002]

2. Description of the Related Art Conventionally, a clutch switching device of this type of washing machine combined with dehydration has been constructed as shown in FIGS. The configuration will be described below.

As shown in the figure, a water receiving tub 1 has a clutch switching device 2 and a motor 3 arranged below, and a washing / dehydrating tub 5 having a rotary vane 4 at its bottom is rotatably arranged. .
The washing shaft 6 is connected to the rotary wing 4, the washing / dewatering tub 5 is connected to the dewatering shaft 7, and the washing shaft 6 is concentrically arranged on the inner diameter of the dewatering shaft 7. Are rotated at the same time, and only the washing shaft 6 is rotated via the reduction gear 9 by the action of the switching clutch 8 during washing.

The brake wheel 10 encloses the reduction gear 9, the dehydration shaft 7 is fitted on the upper side, and the gear case 11 is fitted on the lower side. A lid 13 encloses the dehydration shaft 7 and has an upper bearing 12 inserted therein which is loosely fitted. The bearing case 14 encloses the gear case 11 and inserts the lower bearing 15 in the fitted state. The brake band 16 is concentrically arranged on the outer circumference of the brake wheel 10 and is used for washing and braking.
It is configured to be in close contact with 0 and to be opened during dehydration and drainage. The gear shaft 17 rotates the rotation of the motor 3 via the V-belt 18 and the pulley 19 to reduce the speed of the reduction gear 9
The rod 20 suspends and supports the water receiving tub 1 on the main body 21 of the washing machine.

[0005]

In the conventional structure as described above, the friction heat of the brake wheel 10 and the brake band 16 liquefies the grease in the reduction gear 9, and the grease leaks from the fitting surface of the brake wheel 10 and the gear case 11. May occur and adhere between the brake wheel 10 and the brake band 16, and a predetermined braking performance may not be obtained during braking. Further, when the brake is applied suddenly, the brake noise is loud and sometimes becomes noise.

The present invention solves the above-mentioned problems of the prior art by improving the sealing property of the fitting surface of the brake wheel and the gear case to prevent grease leakage, stabilize the braking performance, and reduce the noise during braking. It is intended to achieve

[0007]

In order to achieve the above object, the present invention provides a dehydration shaft connected to a washing / dehydrating tank,
A washing shaft connected to a rotary blade disposed at the bottom of the washing / dehydrating tub and concentrically disposed on an inner diameter portion of the dewatering shaft; and a brake wheel into which the dewatering shaft is fitted.
A lid in which an upper bearing, which encases the dehydration shaft and which is loosely fitted, is inserted, a bearing case in which a lower bearing, which encloses and fits a gear case fitted under the brake wheel, is inserted, and the brake wheel Is concentrically arranged on the outer periphery of the brake wheel and is in close contact with the brake wheel at the time of washing and braking, and has a brake band that is opened at the time of dehydration and drainage, and is bonded to the inner peripheral surface of the brake wheel.
Further, a means for solving the problem is to dispose a substantially cylindrical elastic body having a flange portion which is sandwiched between the fitting surfaces of the brake wheel and the gear case at the lower end.

[0008]

According to the present invention, by means of the above-mentioned means for solving the problems, the flange portion of the elastic body is sandwiched between the fitting surfaces of the brake wheel and the gear case at the time of dehydration, so that the sealing performance can be improved and the grease leakage can be prevented. At the same time, by bonding the outer peripheral surface of the cylindrical portion of the elastic body to the inner peripheral surface of the brake wheel, it is possible to reduce the brake noise by using it as a sound absorbing material.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The same components as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, the clutch switching device 22
Has a washing shaft 6 connected to the rotary blades 4, a washing / dewatering tub 5 connected to the dewatering shaft 7, and the washing shaft 6 is concentrically arranged inside the dewatering shaft 7. Elastic body 23
Has a substantially cylindrical shape, and a flange portion 24 is formed at a lower end thereof. The flange portion 24 is sandwiched between the fitting surfaces of the brake wheel 10 and the gear case 11, and the outer peripheral surface of the cylindrical portion 25 is formed on the inner circumference of the brake wheel. It adheres to the surface.

To explain the operation in the above structure, the internal grease is liquefied by the rotation of the reduction gear 9 during washing, and the liquefied grease is concentrated on the fitting surfaces of the brake wheel 10 and the gear case 11 by the centrifugal force during dehydration. However, since the flange portion 24 of the elastic body 23 sandwiched between the fitting surfaces serves as a packing to ensure the sealing property, it is possible to prevent the deterioration of the braking performance due to the adhesion of grease to the braking surface. . Further, when the brake wheel 10 and the brake band 16 are wound up during braking, a brake sound is generated, but the cylindrical portion 25 of the elastic body 23 adhered to the inner peripheral surface of the brake wheel 10 serves as a sound absorbing material, and the resonance of the brake wheel 10 occurs. It is possible to prevent the noise and reduce the brake noise.

[0012]

As described above, according to the present invention, a substantially cylindrical elastic body is provided which is adhered to the inner peripheral surface of the brake wheel and has a flange portion at the lower end which is sandwiched between the fitting surface of the brake wheel and the gear case. Since it is provided, it is possible to prevent deterioration of braking performance due to grease leakage in the reduction gear and generation of braking noise due to winding of the brake wheel and the brake band at the time of braking.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a clutch switching device of a combined dewatering washing machine according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a clutch switching device of the washing machine for combined use of dehydration.

FIG. 3 is a cross-sectional view of a dehydrating / washing machine equipped with a clutch switching device of the dehydrating / washing machine.

FIG. 4 is a cross-sectional view of a conventional clutch switching device for a spin-drying washing machine.

FIG. 5 is a cross-sectional view of a spin-drying washing machine equipped with a clutch switching device for the spin-drying washing machine.

[Explanation of symbols]

 4 Rotor blades 5 Washing / dehydrating tub 6 Washing shaft 7 Dehydration shaft 10 Brake wheel 11 Gear case 12 Upper bearing 13 Lid 14 Bearing case 15 Lower bearing 16 Brake band 23 Elastic body 24 Flange part

Claims (1)

[Claims] 1. A dewatering shaft connected to a washing / dehydrating tub, a washing shaft connected to a rotary blade arranged at the bottom of the washing / dehydrating tub, and concentrically arranged on an inner diameter portion of the dewatering shaft, A brake wheel having a dehydration shaft inserted therein, a lid having an upper bearing that covers the dehydration shaft and loosely fitted therein, and a lower bearing that includes a gear case fitted under the brake wheel are included therein. In the brake wheel, there are provided a bearing case that is inserted and attached, and a brake band that is concentrically arranged on the outer circumference of the brake wheel and that is in close contact with the brake wheel during washing and braking, and that is open when dehydrated and drained. Dehydrating and arranging a substantially cylindrical elastic body that is adhered to the peripheral surface and has a flange portion formed at the lower end to sandwich the brake wheel and the fitting surface of the gear case. Switching device for laundry washing machines.