WO2011106910A1

WO2011106910A1 - Dynamic vibration damping device and washing machine equipped therewith

Info

Publication number: WO2011106910A1
Application number: PCT/CN2010/000284
Authority: WO
Inventors: 徐文根; 夏长植; 贾杰
Original assignee: 南京乐金熊猫电器有限公司
Priority date: 2010-03-02
Filing date: 2010-03-08
Publication date: 2011-09-09
Also published as: CN101798742A

Abstract

A dynamic vibration damping device and a washing machine equipped therewith are provided. The washing machine comprises an outermost housing (18), an outer tub (15) in the housing for storing washing water, a drum (14) for the clothing and an electric motor on the rear end of the housing. The upper end of the outer tub is suspended on the housing by a hanging spring (10), while a vibration damper (17) is set on the lower end for supporting and vibration damping. The washing machine further comprises a dynamic vibration damping device (16) and a support (9) for fixing the dynamic vibration damping device on the outer tub. The dynamic vibration damping device comprises a vibration damper body (3, 4), elastomers (5, 6) on both ends of the vibration damper body and a vertical shaft (1) throughout the entire vibration damper body and the elastomers. The vibration damper body, elastomers and vertical shaft are arranged in a sleeve (2). The dynamic vibration damping device can enhance the anti-fatigue effect and prolong the service life of the washing machine with a simple structure, low cost and convenience for promotion.

Description

Dynamic damping device and washing machine equipped with the same

The present invention relates to a damper device, and more particularly to a power damper device mounted to a drum washing machine and a washing machine provided with the power damper device.

Background technique

At present, washing machines on the market are generally classified into a stirring type washing machine and a drum type washing machine. The agitating type washing machine mainly uses the friction between water and clothes or between clothes to wash the clothes, and the drum type washing machine mainly uses the lifting pieces in the drum to lift the clothes. The clothes are lowered by gravity to achieve washing of the clothes; during the washing or dehydrating of the clothes, due to the unevenness of the clothes in the box or the structure of the washing machine itself, a large amount is generated in the process of washing or dehydrating. Vibration, it is easy to make the washing machine move, and the noise generated by the vibration of the washing machine not only affects the use effect of the washing machine, but also the large vibration and noise will wear out the parts of the washing machine and reduce the service life of the washing machine.

This technical problem is accompanied by various periods of development of washing machines. At different stages, technicians adopt different methods, but the fundamental problems have not been solved very well. Nowadays, the drum washing machine on the market is mostly used in the front end of the washing machine drum. The two sides are symmetrically arranged as a pair of balance blocks, wherein the balance block can be a cement balance block or a balance block made of other materials, and the barrel assembly vibrates at the same frequency during the high-speed dehydration of the washing machine. The components have a large amount of vibration in the up and down or left and right directions. The setting of the balance block reduces the vibration amount of the barrel assembly to a certain extent, but this structure which only changes the static inertia during the vibration process is not well solved. Displacement and noise problems; some technicians think of changes to the adjustment feet of the washing machine, including adjustments The tightening force of the foot is the grip force, the hardness and shape of the rubber, etc. The method only increases the friction between the adjusting foot and the ground, but if it encounters a relatively smooth ground, the problem of vibration displacement cannot be solved, and The solution can only be mitigated to a certain extent and cannot solve the technical problem fundamentally.

Summary of the invention

Therefore, in view of the above situation, the technical problem to be solved by the present invention is to provide a power damper device capable of eliminating vibration displacement and noise of a drum washing machine, which replaces the prior art cement balance block and is solved from the aspect of dynamic inertia. Technical problems existing in the prior art.

The technical solution of the present invention is as follows:

A dynamic damper device for a washing machine, characterized in that the damper device comprises a damper body, an elastic body disposed at two ends of the damper body, and a longitudinal axis penetrating the entire damper body and the elastic body, The shock absorber, the elastomer and the longitudinal axis are disposed in the sleeve.

As a modification of the dynamic damper device, the damper body includes a spring vibrator and a sleeve, the sleeve being located between the spring oscillator and the longitudinal axis.

As an improvement of the dynamic damper device, the elastic body includes a spring and a spring base, and the springs are respectively spirally wound around the corresponding spring base.

As an improvement of the dynamic damper device, both ends of the sleeve are respectively provided with end caps, and are fixed to the sleeve by screws.

As an improvement of the dynamic damper device, the number of the bushings in the damper body is at least one.

A washing machine provided with a power damper device, comprising a box at the outermost part of the washing machine, an outer tub for storing washing water in the box body, a drum for placing clothes, and electric power at the rear end of the box body Motivation, the upper end of the outer tub is suspended by the hanging spring on the box body, and the lower end is provided with a shock absorber having a supporting and shock absorbing function, wherein the washing machine further comprises a power damping device and the power damping device a bracket fixed to the barrel, the dynamic damping device comprising a shock absorber, an elastic body disposed at two ends of the shock absorber, and a longitudinal axis penetrating the entire shock absorber and the elastic body, the shock absorber The elastomer and the longitudinal axis are disposed in the sleeve.

An improvement of the washing machine is characterized in that the damper body comprises a spring element and a sleeve, the sleeve being located between the spring element and the longitudinal axis.

As an improvement of the washing machine, the elastic body comprises a spring and a spring base, and both ends of the spring are spirally wound on the corresponding spring bases, respectively.

As an improvement of the washing machine, it is characterized in that both ends of the sleeve are respectively provided with end caps, and they are fixed to the sleeve by screws.

As an improvement of the washing machine, it is characterized in that the number of the sleeves in the shock absorbing body is at least one.

As an improvement of the washing machine, the number of the dynamic damper devices is at least one, and is disposed on both sides of the outer tub in a vertical mounting or a horizontal mounting manner.

As an improvement of the washing machine, the power damper device is connected to the bracket by welding, and the distance between the welded ends of the two ends and the end of the bracket is 5-15 mm.

Compared with the prior art, the invention has the following advantages: 1) solving the vibration displacement and noise problem of the washing machine by using the principle of dynamic inertia, reducing the vibration amount by 30%; reducing the noise by 3dBA; eliminating the principle of using static inertia in the prior art Solve the limitations of noise and displacement problems; 2) The dynamic damping device can enhance the anti-fatigue effect of the washing machine, prolong the service life of the washing machine, and has a simple structure, low cost and convenient promotion. DRAWINGS

Figure 1: Cement balance block used in the prior art;

Figure 2 is a cross-sectional view of the dynamic damper device of the present invention;

Figure 3: Schematic diagram of the sleeve of the dynamic damping device;

Figure 4: Top view of the dynamic damping device;

Figure 5: Schematic diagram of the structure of the bracket for connecting the dynamic damping device;

Figure 6: Schematic diagram of a washing machine equipped with a dynamic damping device;

Figure 7: A cross-sectional view of the washing machine;

In the figure: 1 is the longitudinal axis, 2 is the sleeve, 3 is the spring vibrator, 4 is the sleeve, 5 is the spring, 6 is the spring base, 7 is the end cover, 8 is the screw, 9 is the bracket, 10 is the crane Spring, 11 is the motor, 12 is the horizontal axis, 13 is the tripod, 14 is the drum, 15 is the outer barrel, 16 is the dynamic damping device, 17 is the shock absorber, 18 is the box, 20 is the cement balance block.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings;

Referring to Fig. 1, most of the drum washing machines on the market currently use a pair of cement balance blocks 20 symmetrically disposed on both sides of the front end of the drum, or other similar structures that can balance the movement, when the motor drives the horizontal axis and the drum speed Rotation, especially in the dehydration process of the washing machine, the washing machine will produce a relatively strong vibration. At this time, the cement balance blocks on both sides of the drum can balance the vibration to a certain extent, but the balance block cannot be fundamentally The problem of vibration is solved. Therefore, in the process of washing clothes or dehydration, the problem of vibration shifting and noise is still present. 2, 3, and 5 are respectively a cross-sectional view, a front view and a top view structure of the dynamic damper device of the present invention. In Fig. 2, it can be seen that the dynamic damper device mainly includes a shock absorbing body and is disposed on the damper body. An elastic body at the end, and a longitudinal axis 1 extending through the entire damper body and the elastic body, a sleeve 2 is disposed outside the damper body, the elastic body and the longitudinal axis 1 and is sleeved therein, wherein the damper body Including the spring vibrator 3 and the sleeve 4, the spring vibrator 3 does not directly contact the longitudinal axis 1 to avoid direct collision with the longitudinal axis during the vibration, the sleeve 4 is disposed in between, and the vibration is generated in order to reduce the vibration. Noise, a suitable lubricating oil may be added in the sleeve 4; the elastic body includes a spring 5 and a spring base 6, which may be a compression spring or a structure similar to a spring, and the two ends of the spring are respectively spirally wound around the corresponding On the spring base 6, the spring base 6 is mainly used to fix the spring during the vibration process, and also avoids the direct contact between the spring and the spring vibrator during the vibration, further avoiding the noise caused by the collision; In the dynamic damper device of the invention, the upper and lower sides of the damper body are provided with elastic bodies, which cooperate with each other to complete the process of absorbing shock during the vibration process, and a cylindrical sleeve 2 is disposed on the outer side thereof, and the sleeve 2 can be selected Steel, copper or other metal materials, end caps 7 are provided on the upper and lower ends, respectively, and are fixed to the sleeve 2 by screws 8, which further reduces noise generation.

4 is a bracket 9 , the dynamic damper device 16 is fixed on the washing machine through the bracket, the bracket can be selected from steel, copper or other metal materials, and the power damper device is connected to the bracket 9 by welding, and the welded ends are The distance between the ends of the bracket is 5-15 mm, wherein the preferred distance is 10 mm; during the actual production operation, the dynamic damping device 16 can also be integrated with the bracket 9, that is, fixed in the washing machine by integral molding. On the cabinet. 6 and 7 are respectively a front view and a cross-sectional view of a washing machine equipped with a power damper device, which can be seen in the figure, the washing machine includes a box body 18 located at the outermost part of the washing machine, and an outer tub 15 for storing washing water in the box body and a drum 14 for placing clothes, an electric motor 11 at a rear end of the box, the upper end of the drum is suspended by the hoisting spring 10, and the lower end is provided with a shock absorber 17 having a supporting and shock absorbing function. The horizontal axis 12 of the rear end of the body and the tripod 13 are fixed together for supporting and driving the drum 14. Under the driving of the motor 11, the horizontal shaft 12 drives the drum 14 to rotate, and the lifting member in the drum lifts the clothes, thereby The process of washing, dehydrating, etc. is completed, and the power damper device 16 is connected to the bracket 9 by means of splicing, and the distance between the splicing ends of the two ends and the end of the bracket is 5-15 mm, preferably 10 dishes.

In the actual production operation process, in order to save cost or according to actual needs, one or more dynamic damping devices 16 may be disposed on the box in a horizontal installation manner; or two dynamic damping devices 16 may be adopted. The vertical installation is symmetrically disposed on both sides of the cabinet. As shown in FIG. 6, the power damper device 16 can also be integrated with the bracket 9, that is, fixed to the cabinet of the washing machine by integral molding. . The position of the dynamic damping device is usually placed on both sides of the outer drum in a vertical or horizontal installation to reduce the amount of vibration in different directions. Of course, in other embodiments, the position and mounting manner of the power damper device are not limited thereto, and different methods may be employed as needed.

During the high-speed dehydration process of the washing machine, the drum and other barrel components of the washing machine will vibrate at the same frequency, and there will be a large amount of vibration in both the up and down direction and the left and right direction. At this time, the dynamic damping device will transfer energy. The way to absorb the vibrations, eliminating the vibration of the drum and other barrel components, thereby reducing vibration noise and displacement. It should be noted that the above is a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and those skilled in the art can make improvements or equivalent changes without departing from the scope of the present invention. All should fall within the scope of protection of the present invention.

Claims

Rights request

A power damper device for a washing machine, characterized in that: the power damper device comprises

a damper body, an elastic body disposed at both ends of the damper body, and a longitudinal axis (1) penetrating the entire damper body and the elastic body, wherein the damper body, the elastic body, and the longitudinal axis (1) are disposed on the sleeve ( 2) Medium.

2. The power damper device for a washing machine according to claim 1, wherein: the damper body comprises a spring vibrator (3) and a sleeve (4), and the sleeve (4) is located at a spring Between the vibrator (3) and the vertical axis (1).

3. The power damper device for a washing machine according to claim 1, wherein: the elastic body comprises a spring (5) and a spring base (6), and two ends of the spring (5) are spirally wound at each Corresponding to the spring base (6).

4. A power damper device for a washing machine according to claim 2 or 3, characterized in that both ends of the sleeve (2) are respectively provided with end caps (7) and fixed by screws (8) On the sleeve (2).

A dynamic damper device for a washing machine according to claim 2 or 3, characterized in that the number of the bushings (4) in the damper body is at least one.

6. A washing machine provided with a power damper device, comprising a box body (18) located at the outermost part of the washing machine, an outer tub (15) for storing washing water in the box body, and a drum (14) for placing clothes, located in the box body a motor (11) at the rear end, the upper end of the outer tub (15) is suspended from the box body (18) by a lifting spring (10), and the lower end is provided with a shock absorber (17) having a supporting and shock absorbing function. The washing machine further comprises a power damping device (16) And a bracket (9) for fixing the power damper device to the barrel body, the dynamic damper device (16) including a shock absorbing body, an elastic body disposed at both ends of the damper body, and a whole damper body and The longitudinal axis (1) of the elastomer, the damping body, the elastomer and the longitudinal axis (1) are arranged in the sleeve (2).

The washing machine according to claim 6, characterized in that the damper body comprises a spring vibrator (3) and a sleeve (4), the sleeve (4) being located at the spring element (3) and the longitudinal axis

Between (1).

8. The washing machine according to claim 6, wherein the elastic body comprises a spring (5) and a spring base (6), and two ends of the spring (5) are spirally wound around the corresponding spring base (6), respectively. on.

A washing machine according to claim 7 or 8, characterized in that both ends of the sleeve (2) are respectively provided with end caps (7) and are fixed to the sleeve (2) by screws (8).

A washing machine according to claim 7 or 8, characterized in that the number of the sleeves (4) in the damper body is at least one.

A washing machine according to claim 6 or claim 7 or claim 8, characterized in that the power damper (16) is at least two, which are arranged on both sides of the outer tub in a vertical or horizontal manner.

The washing machine according to claim 6 or 7 or 8, wherein the dynamic damper device (16) is connected to the bracket (9) by welding, and the distance between the welded ends of the two ends and the end of the bracket is 5-15 legs.