A vibration damping system for a twin-tub washing machine

Abstract

The utility model relates to the field of washing machine discloses a double cylinder washing machine's damping system, including the shell, the upper end fixedly connected with workstation of shell, the inside of shell is provided with the water bucket, the water bucket is provided with two groups, and two groups water bucket with the central axis of shell is symmetry axis symmetry, the lower part of water bucket is provided with counterweight assembly, the lower part of shell is provided with damping assembly, the damping assembly includes shock pad, the upper surface of shock pad is fixedly connected with shell. In the utility model, through shock pad, spring support, spring sheath, connecting piece, connecting bolt, can when double cylinder washing machine operation, the vibration impact force produced in the equipment inside is delivered to shock pad and spring support, and through shock pad and shock absorber, the impact force is buffered and damped, thereby reducing the vibration produced when double cylinder washing machine operates and the noise produced due to vibration.

Description

Technical Field

[0001] This utility model relates to the field of washing machines, and more particularly to a vibration reduction system for a twin-tub washing machine. Background Technology

[0002] A twin-tub washing machine is a type of washing machine with two separate tubs for washing and spin-drying. The washing tub is used for washing and rinsing and contains a pulsator; the spin-drying tub is used to spin-dry clothes. It features separate functions, a simple structure, low price, and flexible water usage.

[0003] In existing technologies, some twin-tub washing machines employ vibration-damping components in their vibration reduction design to attempt to reduce vibration and noise during operation. For example, simple shock-absorbing pads may be installed in certain parts of the washing machine, or a single spring structure may be used to buffer some of the vibrations generated during operation.

[0004] However, existing vibration damping structures for twin-tub washing machines have significant shortcomings in practical applications. On the one hand, the damping components used are relatively simple, mostly relying on individual damping pads or springs, which are insufficient to effectively cope with the large vibration and impact forces generated during the operation of twin-tub washing machines, resulting in limited buffering and damping effects. On the other hand, the combination design between the various damping components is not reasonable enough, failing to form a good synergistic effect. This leads to the vibration and impact forces not being fully transmitted to the damping components for effective buffering, causing the twin-tub washing machine to still generate significant vibration and noise during operation, affecting the user experience and shortening the lifespan of the washing machine to some extent. Therefore, a vibration damping system for twin-tub washing machines is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a vibration reduction system for a twin-tub washing machine, aiming to improve the problem that the existing vibration reduction structures for twin-tub washing machines have significant deficiencies in practical applications.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a vibration reduction system for a twin-tub washing machine, comprising a shell, a workbench fixedly connected to the upper end of the shell, a water tank inside the shell, two sets of water tanks, the two sets of water tanks being symmetrical about the central axis of the shell, a counterweight assembly at the lower part of the water tank, and a vibration damping assembly at the lower part of the shell.

[0007] The shock absorption assembly includes a shock absorption pad, the upper surface of which is fixedly connected to the outer shell. A spring bracket is fixedly connected to the upper end of the shock absorption pad. Two sets of spring brackets are provided, and a shock absorption spring is elastically connected between the two sets of spring brackets. A connector is fixedly connected to the outer surface of the upper spring bracket by screws. Connecting bolts are provided at both ends of the connector. A spring sleeve is fitted onto the outer surface of the shock absorption spring.

[0008] As a further description of the above technical solution:

[0009] The counterweight assembly includes a fixed frame, the upper end of which is fixedly connected to the water tank by bolts, a lower counterweight block is fixedly connected to the inner side of the fixed frame, and an upper counterweight block is fixedly connected between the two sets of water tanks by bolts.

[0010] As a further description of the above technical solution:

[0011] The workbench has multiple through holes on its upper surface, and the outer shell has multiple arc-shaped grooves on its lower surface. The bottom of the water tank is fixedly connected to the connector by connecting bolts.

[0012] As a further description of the above technical solution:

[0013] The lower surface of the shock-absorbing pad has multiple sets of arc-shaped anti-slip textures, and the outer arc surface of the shock-absorbing spring slides against the spring sleeve.

[0014] As a further description of the above technical solution:

[0015] The upper end of the connector is fixedly connected to a water tank by connecting bolts, and threaded through holes are provided on both the left and right sides of the connector.

[0016] As a further description of the above technical solution:

[0017] The spring sheath has a hollow interior and is open at both the top and bottom.

[0018] As a further description of the above technical solution:

[0019] The lower surface of the fixing frame has multiple sets of through holes, and each of the four corners of the fixing frame has through threaded holes.

[0020] As a further description of the above technical solution:

[0021] A groove is provided at the center of the inner surface of the fixing frame, and the size of the lower counterweight is the same as the size of the groove at the center of the inner surface of the fixing frame.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by means of shock-absorbing pads, spring brackets, spring sleeves, connectors, and connecting bolts, the vibration and impact force generated inside the twin-tub washing machine can be transmitted to the shock-absorbing pads and spring brackets when the twin-tub washing machine is running. The shock-absorbing springs and shock-absorbing pads buffer and dampen the impact force, thereby reducing the vibration and noise generated by the twin-tub washing machine during operation.

[0024] 2. In this utility model, the fixed frame, upper counterweight, clutch motor, and lower counterweight can improve the stability of the washing machine during operation, reduce the violent vibration and noise caused by the rotation of the drum, prevent the washing machine from shifting or shaking during operation, and extend the service life of internal parts and the whole machine. At the same time, the counterweight can balance the overall center of gravity of the washing machine, which tends to be forward due to the heavier front structure, making the washing process more stable, improving the washing effect, and reducing the damage to the machine body and the placement environment caused by excessive vibration. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall vibration reduction system of a twin-tub washing machine proposed in this utility model;

[0026] Figure 2 This is an internal schematic diagram of a vibration reduction system for a twin-tub washing machine according to the present invention.

[0027] Figure 3 This is a schematic diagram of the clutch motor of the vibration damping system of a twin-tub washing machine proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the lower counterweight of the vibration damping system of a twin-tub washing machine proposed in this utility model;

[0029] Figure 5 This is a schematic diagram of the vibration damping components of a vibration damping system for a twin-tub washing machine proposed in this utility model;

[0030] Figure 6 This is a schematic diagram of the internal components of a vibration damping system for a twin-tub washing machine according to the present invention.

[0031] Legend:

[0032] 1. Outer shell; 2. Shock-absorbing components; 3. Counterweight components; 4. Workbench; 5. Water tank; 201. Shock-absorbing pad; 202. Spring bracket; 203. Spring sleeve; 204. Connector; 205. Connecting bolt; 206. Shock-absorbing spring; 301. Fixing frame; 302. Upper counterweight; 303. Clutch motor; 304. Lower counterweight. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figure 1 , Figure 5 as well as Figure 6 An embodiment of this utility model provides a vibration reduction system for a twin-tub washing machine, including a shell 1, a workbench 4 fixedly connected to the upper end of the shell 1, a water tank 5 inside the shell 1, two sets of water tanks 5, and the two sets of water tanks 5 are symmetrical about the central axis of the shell 1, a counterweight component 3 is provided at the lower part of the water tank 5, and a shock-absorbing component 2 is provided at the lower part of the shell 1.

[0035] The shock absorption component 2 includes a shock absorption pad 201 made of polyurethane (PU), which combines high elasticity and high hardness. The hardness and damping can be controlled by adjusting the formula, allowing it to adapt to vibrations of varying intensities. It is highly impact-resistant, wear-resistant, oil-resistant, and has a long service life. The upper surface of the shock absorption pad 201 is fixedly connected to the outer shell 1. A spring bracket 202 is fixedly connected to the upper end of the shock absorption pad 201. When the equipment vibrates during operation, the spring brackets 202 on both sides will compress the shock absorption springs 206, thus forming a shock absorption buffer. Two sets of spring brackets 202 are provided. A shock-absorbing spring 206 is elastically connected between 202. The shock-absorbing spring 206 is made of 55Si2Mn spring steel with high carbon content, excellent elastic limit and fatigue strength, and can maintain stable deformation recovery ability under repeated vibration. It has strong tensile and bending resistance. A connector 204 is fixedly connected to the outer surface of the upper spring bracket 202 by screws. The shock-absorbing assembly 2 can be installed as a whole on the lower part of the water tank 5 through the connector 204. Connecting bolts 205 are provided at both ends of the connector 204. A spring sleeve 203 is sleeved on the outer surface of the shock-absorbing spring 206.

[0036] Multiple through holes are provided on the upper surface of the workbench 6, and multiple arc-shaped grooves are provided on the lower surface of the outer shell 1, so that the shock-absorbing component 2 can be located inside. The bottom of the water tank 5 is fixedly connected to the connector 204 by connecting bolts 205, so that the shock-absorbing component 2 can reduce the vibration generated by the water tank 5 during the dehydration process. Multiple arc-shaped anti-slip textures are provided on the lower surface of the shock-absorbing pad 201, thereby increasing the friction between the shock-absorbing pad 201 and the ground. The outer arc surface of the shock-absorbing spring 202 slides with the spring sleeve 203. The upper end of the connector 204 is fixedly connected to the water tank 5 by connecting bolts 205. Through threaded holes are provided on both the left and right sides of the connector 204. The spring sleeve 203 is hollow inside and has through holes at both the top and bottom. The outer diameter of the shock-absorbing spring 202 is the same as the inner diameter of the spring sleeve 203. Therefore, when the whole equipment is subjected to pressure from above, the spring sleeve 203 can provide motion damping for the shock-absorbing spring 202 and prevent the electrical equipment at the bottom of the equipment from colliding.

[0037] Reference Figures 2-4 The counterweight assembly 3 includes a fixed frame 301. The upper end of the fixed frame 301 is fixedly connected to the water tank 5 by bolts. A lower counterweight 304 is fixedly connected to the inner side of the fixed frame 301. An upper counterweight 302 is fixedly connected between the two sets of water tanks 5 by bolts. The upper counterweight 302 is irregularly shaped, so it can balance the overall center of gravity of the equipment. In addition, it can make full use of the internal structural gaps of the equipment and improve the overall space utilization.

[0038] The lower surface of the fixing frame 301 has multiple through holes, and the four corners of the fixing frame 301 have through threaded holes. The center of the inner surface of the fixing frame 301 has a groove. The size of the lower counterweight 304 is the same as the size of the groove at the center of the inner surface of the fixing frame 301. Therefore, the fixing frame 301 can be fitted onto the outside of the lower counterweight 304 to limit its position.

[0039] Working Principle: When a twin-tub washing machine is in use, the internal electrical components and impeller will cause the entire device to vibrate to a certain extent during operation. This vibration will compress the spring bracket 202 located at the bottom of the device. When the spring bracket 202 is compressed, the upper spring bracket 202 will move downwards and compress the shock-absorbing spring 206. At this time, the shock-absorbing spring 206 will undergo a certain degree of elastic deformation due to its own material, thus buffering and damping the impact force. Since the outer diameter of the shock-absorbing spring 202 is the same as the inner diameter of the spring sleeve 203, the spring sleeve 203 can provide motion damping for the shock-absorbing spring 202 when the device is subjected to pressure from above. At the same time, some of the impact force will also be transmitted to the shock-absorbing pad 201, which will further buffer and dampen the impact force due to its own material, thereby improving the stability of the device during operation.

[0040] Furthermore, by setting an upper counterweight 302 and a lower counterweight 304 at the bottom of the device, the overall center of gravity of the equipment is lowered, making the washing machine stable during operation and reducing severe vibrations caused by the shift in the center of gravity. The mass of the counterweights themselves can also provide inertial buffering for the vibrations generated by the rotation of the drum. When the drum rotates eccentrically, the inertial force of the counterweights can offset some of the vibration energy, reducing the transmission of vibration to the outer casing 1 and the ground, thereby reducing operating noise.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vibration damping system for a twin-tub washing machine, comprising a housing (1), characterized in that: The upper end of the outer shell (1) is fixedly connected to a workbench (4), and a water tank (5) is provided inside the outer shell (1). There are two sets of water tanks (5), and the two sets of water tanks (5) are symmetrical about the central axis of the outer shell (1). A counterweight assembly (3) is provided at the lower part of the water tank (5), and a shock-absorbing assembly (2) is provided at the lower part of the outer shell (1). The shock absorption assembly (2) includes a shock absorption pad (201), the upper surface of which is fixedly connected to the outer shell (1). A spring bracket (202) is fixedly connected to the upper end of the shock absorption pad (201). Two sets of spring brackets (202) are provided, and a shock absorption spring (206) is elastically connected between the two sets of spring brackets (202). A connector (204) is fixedly connected to the outer surface of the upper spring bracket (202) by screws. A connecting bolt (205) is provided at both ends of the connector (204). A spring sleeve (203) is sleeved on the outer surface of the shock absorption spring (206).

2. The vibration reduction system for a twin-tub washing machine according to claim 1, characterized in that: The counterweight assembly (3) includes a fixing frame (301), the upper end of which is fixedly connected to the water tank (5) by bolts, a lower counterweight (304) is fixedly connected to the inner side of the fixing frame (301), and an upper counterweight (302) is fixedly connected between the two sets of water tanks (5) by bolts.

3. The vibration reduction system for a twin-tub washing machine according to claim 1, characterized in that: The workbench (4) has multiple through holes on its upper surface, and the outer shell (1) has multiple arc-shaped grooves on its lower surface. The bottom of the water tank (5) is fixedly connected to the connector (204) by connecting bolts (205).

4. The vibration damping system for a twin-tub washing machine according to claim 1, characterized in that: The lower surface of the shock-absorbing pad (201) has multiple sets of arc-shaped anti-slip textures, and the outer arc surface of the shock-absorbing spring (206) slides against the spring sleeve (203).

5. The vibration damping system of a twin-tub washing machine according to claim 1, characterized in that: The upper end of the connector (204) is fixedly connected to a water tank (5) by a connecting bolt (205), and threaded through holes are provided on both the left and right sides of the connector (204).

6. The vibration damping system of a twin-tub washing machine according to claim 1, characterized in that: The spring sleeve (203) has a hollow interior and is open at both the top and bottom.

7. The vibration damping system for a twin-tub washing machine according to claim 2, characterized in that: The lower surface of the fixing frame (301) has multiple sets of through holes, and the four corners of the fixing frame (301) are provided with through threaded holes.

8. The vibration damping system of a twin-tub washing machine according to claim 2, characterized in that: A groove is provided at the center of the inner surface of the fixing frame (301), and the size of the lower counterweight (304) is the same as the size of the groove at the center of the inner surface of the fixing frame (301).

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