JPS612895A - Brake apparatus of washing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a brake device for a washing machine or the like in which shoe wear is reduced by using grease.

[Technical background of the invention]

Conventionally, for example, in a washing machine that also serves as a dehydrator, a brake device is installed to prevent free rotation of the rotary tank during washing due to the rotation of the bar sweater. A brake band connected to a brake drum and having a shoe attached to the inner surface is tightly wound around the outer peripheral surface of the brake drum via the shoe, and a brake lever is provided that releasably locks the brake band. 10. With this brake lever, the brake band t
- By locking, a braking frictional force is generated between the shoe and the brake drum, thereby restraining the free rotation of the rotating tank. In such a brake device, the shoes 15- are coated with grease in advance in order to reduce wear on the shoes.

[Problems with background technology]

However, in the conventional method described above, grease is applied to the inner surface of the shoe attached to the brake band, and when the brake band is attached to the brake drum, the tightening force of the brake band itself causes ## to adhere to the inner surface of the shinny. Most of the grease that has been applied leaks out from between the inner surface of the shoe and the outer circumferential surface of the brake drum, resulting in a small amount of grease remaining in the shoe and only remaining near the inner surface of the shoe. However, the wear-reducing effect of the grease does not last long, that is, dry friction occurs at an early stage, resulting in a shortened service life and the occurrence of so-called squeaks.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and its object is to provide a brake device for a washing machine, etc., which can extend the service life and eliminate the generation of squeaks and the like.

[Summary of the invention]

The present invention has a brake drum connected to a rotating body such as a rotating tank, and a shoe that reduces grease wear on the inner surface of the brake drum. A brake band is wrapped around the brake drum and rotates together with the brake drum at all times, and the brake band is provided to be releasably locked to the brake band, and the shoe and the brake drum are connected by locking to the brake band. and a brake lever that generates a braking friction force between the shoe and the shoe, and by impregnating the shoe with the grease, the wear-reducing effect of the grease can be maintained over a long period of time. Its distinctive feature is that it is sustainable.

[9i of invention! Winding Example] An example of a dormitory in which the present invention is applied to a dehydrating and washing machine will be described below with reference to drawing t. In Fig. 1, which shows the mechanical part of the amazuki/dewatering machine, 1 is a water tank disposed inside an outer box (not shown); So, in the center of the outer bottom of this rotary tank 2 is a hollow cylindrical shaft 3 facing downward, and this cylindrical shaft 5 is a water receptacle? ! 1 is supported by a lower casing 4 via a bearing 5.5. Reference numeral 6 denotes a washing shaft which is inserted through and supported by the rotary shaft 5, and a bar rv+1-tough is connected to the upper end protruding into the rotary tank 2, and a μ pulley 8 and integrated with the lower end are connected to the washing shaft 6. A drive shaft 9 is connected. This is a 10-piece clutch mechanism, which has a well-known structure that connects and disconnects the power transmission path from the drive shaft 9 to the row shaft 6. During dewatering, the clutch mechanism 10 connects and disconnects the row shaft 3. The entire washing shaft 6 is rotated integrally with the washing shaft 6, and when washing is performed, only the washing shaft 6 is rotated by being disconnected by a clutch mechanism 10. Now, 11 is a brake device, which is constructed as follows.

That is, in FIGS. 1 and 2, reference numeral 12 denotes a brake drum, which is fitted onto the brake shaft 6 so as to rotate integrally therewith, and is thereby connected to the rotating tank 2, which is a rotating body. .

This is a 15μ brake band, which has an annular shape with ends, and a locked portion 13B is formed at one end. Reference numeral 14 denotes a shoe attached to the inner surface of the player band 13 by adhesive, and is made of, for example, felt, and the shoe 14 is impregnated with grease 15 for reducing wear. Here, one example of the impregnation method is to heat and melt grease that is semi-solid at room temperature, and immerse the shoe 14 adhered to the brake band 13 together with the brake band 15 in the molten grease. The shoe 14 is impregnated with molten grease, and the shoe 14 is taken out and returned to room temperature. The brake band 13 having such a shoe 14 is wound around the outer peripheral surface of the brake drum 12 in an M-shaped manner, and rotates together with the brake drum 12 at all times (in this case, during dewatering). . Reference numeral 16 denotes a brake lever, which has a hi stop part 16ak, and has a hi stop part 16ak.
B is pivoted so that it can be releasably locked to the locked portion 13a of the brake band 16. The rotation of this brake lever 16 is controlled by an electromagnet (not shown), and under this control, the locking portion 16a locks the locked portion 13a of the brake pan l-' 13 during washing. , during dewatering, the lock of 7 is released. Therefore, during washing when only the varisator 7 is rotationally driven, the rotation Iv2 also tries to rotate due to the swirling water flow caused by the rotation of the harvshake 7, but the brake band 13 is not connected to the brake lever. 16, a restraining force is created between the brake drum 12, which is integral with the rotation WI2, and the shoe 14 of the brake band 13, so that the free rotation of the rotation tank 2 is restricted.

Note that during dehydration, the locking of the brake hand 13 by the brake lever 16 is released, so the brake band 15
rotates together with the brake drum 12.

According to an example of a main dormitory with such a configuration, 15 greases are mixed with 1 shoe.
4. Instead of cleaning (coating) it with grease 15
Since the grease 15 is impregnated into the shoe 14, even when the brake band 15 is wrapped around the brake drum 12, the grease 15 remains in the shoe 14, and as a result, the grease 15 remains in the shoe 14 in a very small amount near the inner surface of the shoe. Unlike the conventional method where it remains only in hard parts, it does not cause dry friction and provides a stable wear-reducing effect over a long period of time, which greatly extends the service life and reduces the occurrence of squeaks. In addition, the service life of the dehydrating/washing machine, which is the product, can be extended, and noise can be prevented.

In addition, in the above residual example, is this invention applicable? Although the present invention has been applied to a brake device for a washing machine that also serves as a dehydrator, the present invention can be widely applied to brake devices for other washing machines and other devices.

〔Effect of the invention〕

As is clear from the above description, the present invention includes a brake drum connected to a rotating body such as a rotating tank, and a shoe whose wear is reduced by grease attached to the inner surface of the drum. A brake hand is tightly wound around the outer circumferential surface of the drum and rotates together with the brake drum at all times, and a brake hand is provided so as to be able to detachably engage the brake band and is engaged with the brake band. In a brake device such as a washing machine, which is equipped with a brake lever that generates a braking friction force when opening the chute with the brake drum, the grease 7- is impregnated into the shoe. It is characterized by:
The abrasion-reducing effect of the grease on the shoe can always be stably obtained over a long period of time, and the service life can therefore be greatly extended, and the generation of squeaks can be eliminated, which is an excellent effect.

[Brief explanation of drawings]

Figure +ri+ shows a complete example of the present invention; Fig. 1 is a vertical cross-sectional view showing a mechanical part of a washing machine for dehydration and washing, and Fig. 2 is a cross-sectional view of the main part. In the figure, 2 rotary tanks (rotating bodies), 3 a row shaft, 10 a clutch i structure, 11 a brake system, 12 a play drum,
16 brake band, 13 all locked parts, shoe 14, 15μ grease, 16 brake lever, 1611
j: i stop part. Applicant Toshiba Corporation 1, Agent Patent Attorney Tsuyoshi Sato 'Figure 1

Claims (1)

[Claims] 1. A brake drum connected to a rotating body such as a rotating tank;
a brake band having a shoe whose wear is reduced by grease attached to the inner surface thereof, the brake band being tightly wound around the outer peripheral surface of the brake drum through the shoe and always rotating together with the brake drum; The brake lever is provided so as to be able to releasably lock a brake band and generate a braking friction force between the shoe and the brake drum by locking the brake band. A brake device for a washing machine or the like, characterized in that the shoe is impregnated with the grease.