Double-suspender vibration damping device of drum type damping pulsator washing machine

Abstract

The utility model provides a drum type damping pulsator washing machine double-suspender vibration damping device, which relates to the technical field of washing machines, and comprises an upper suspender, a lower suspender and a vibration damping sleeve, the upper end of the upper suspender is arranged on a washing machine shell, the lower end of the upper suspender is fixedly provided with a spring lower support, and the spring lower support is provided with a friction element; a spring upper support is installed on the upper hanging rod in a sliding mode, the lower end of the lower hanging rod is installed between the middle and the bottom of an outer barrel of the washing machine, the friction element is attached to the inner wall of the sleeve body, the upper hanging rod is sleeved with a damper spring, and the damper spring is arranged between the spring upper support and the spring lower support. The lower end of the device can be installed between the middle and the bottom of the outer barrel of the washing machine, the included angle between the device and the outer barrel of the washing machine is increased, the deviation rectifying capacity of the device is improved, the friction element is attached to the inner wall of the sleeve body, the friction area is increased, and the damping effect of the washing machine is better.

Description

Technical Field

[0001] This utility model relates to the field of washing machine technology, and in particular to a double-rod vibration reduction device for a tubular damping impeller washing machine. Background Technology

[0002] During startup and operation, the outer tub of a top-loading washing machine will shake or sway, generating significant vibrations. Therefore, to ensure the stability of the washing machine during use, existing washing machines are usually equipped with vibration damping devices. One end of the vibration damping device is a suspension rod installed on the washing machine body, and the other end is a vibration damping sleeve. The vibration damping sleeve is relatively large and is usually installed at the bottom of the outer tub, resulting in a small angle between the vibration damping device and the outer tub. This weakens the device's ability to correct the outer tub's deviation. Furthermore, existing vibration damping devices typically limit the friction element through an upper seat and spring support. This method of installing the friction element causes it to be close to the suspension rod, which is relatively thin, resulting in a limited friction area and thus limited damping. This reduces the effectiveness of preventing the upper suspension rod and the sleeve body from sliding relative to each other, failing to achieve a good vibration damping effect for the washing machine.

[0003] Therefore, a dual-rod vibration reduction device for a drum-type damping impeller washing machine is needed to solve the above problems. Utility Model Content

[0004] This utility model proposes a double-hanger vibration reduction device for a cylindrical damping impeller washing machine. The lower hanger allows the lower end of the device to be installed between the middle and bottom of the outer tub of the washing machine, increasing the angle between the device and the outer tub, thereby improving the device's correction capability. Furthermore, the device brings the friction element close to the inner wall of the sleeve body, increasing the friction area and effectively preventing relative sliding between the upper hanger and the sleeve body, resulting in better vibration reduction of the washing machine.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A dual-suspension vibration damping device for a drum-type damping impeller washing machine, characterized in that it includes:

[0007] The upper end of the upper suspension rod is installed on the washing machine shell, and the lower end of the upper suspension rod is fixedly installed with a spring support. The spring support is provided with a friction element, and the upper spring support is slidably installed on the upper suspension rod.

[0008] The lower suspension rod has a lower base fixedly installed at its upper end, and its lower end is installed between the middle and bottom of the outer tub of the washing machine.

[0009] A vibration damping sleeve includes a sleeve body with open ends, an upper spring support fixedly installed at the upper open end of the sleeve body, a lower seat fixedly installed at the lower open end of the sleeve body, a lower spring support slidably installed inside the vibration damping sleeve, a friction element abutting against the inner wall of the sleeve body, and a vibration damping spring sleeved on the upper suspension rod, the vibration damping spring being disposed between the upper spring support and the lower spring support.

[0010] As a preferred technical solution, an annular mounting groove for constraining the friction element is provided on the outer peripheral surface of the lower spring support, and the friction element is disposed in the annular mounting groove.

[0011] As a preferred technical solution, two oil storage grooves for storing lubricating grease are provided on the outer peripheral surface of the lower spring support. The two oil storage grooves are located on both sides of the annular mounting groove, and each oil storage groove is provided with several partition plates.

[0012] As a preferred technical solution, the upper spring support is provided with a number of vent holes for connecting the cavities on both sides of the lower spring support.

[0013] As a preferred technical solution, a connecting sleeve is provided at the top of the lower spring support, the lower suspension rod is disposed inside the connecting sleeve, and a number of reinforcing ribs are evenly distributed on the outer circumferential surface of the connecting sleeve.

[0014] As a preferred technical solution, the spring support includes an integrally formed guide sleeve and a support sleeve. The guide sleeve and the support sleeve are coaxially arranged and both are sleeved on the upper hanging rod. The guide sleeve is located outside the sleeve body, and the support sleeve is located inside the sleeve body. A plurality of spring positioning protrusions are inclinedly arranged on the outer circumferential surface of the support sleeve, and the plurality of spring positioning protrusions are evenly distributed along the warp direction of the support sleeve.

[0015] As a preferred technical solution, the friction element is a cylindrical damping sleeve with openings at both ends, or the friction element is made by rolling up a damping sheet wrapped around the upper rod.

[0016] As a preferred technical solution, a rod seat is installed at the upper end of the upper rod and the lower end of the lower rod. A waterproof plate is sleeved on the upper rod, and the waterproof plate is disposed between the upper spring support and the corresponding rod seat.

[0017] By adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0018] Because the dual-rod vibration damping device of the drum-type damping pulsator washing machine includes a vibration damping sleeve, the lower end of which is connected to a lower hanging rod. According to the physical formula Fx=F×cos(α), where F represents the magnitude of the force, Fx represents the horizontal component of F, and α represents the tilt angle between F and the horizontal plane, the larger the tilt angle α between F and the horizontal plane, the smaller cos(α) will be, resulting in a smaller horizontal component of Fx. During the use of this device, the lower hanging rod is installed between the middle and bottom of the outer tub of the washing machine, avoiding interference between the vibration damping sleeve and the outer tub wall of the washing machine, increasing the angle between this device and the outer tub of the washing machine, that is, reducing the tilt angle α between this device and the horizontal plane, thereby increasing the horizontal component of this device, and thus increasing the device's correction capability. If the outer tub of the washing machine shifts due to centrifugal force, the horizontal component of this device will quickly correct the washing machine, making the washing machine run more stably.

[0019] When the washing machine vibrates during operation, relative sliding occurs between the upper suspension rod and the sleeve body. Friction damping is generated between the friction element and the inner wall of the upper sleeve body, which prevents relative sliding between the upper suspension rod and the sleeve body, thus achieving a vibration reduction effect. The friction element is close to the inner wall of the sleeve body, which increases the friction area and further prevents relative sliding between the upper suspension rod and the sleeve body, making the vibration reduction effect of the washing machine better.

[0020] Compared with existing vibration damping devices, the friction element is mounted on the lower spring support, and the upper spring support can be used as an upper seat for connecting the upper rod and the sleeve body, and can also limit the compression spring. This eliminates the need for the upper seat and simplifies the structure of the vibration damping device. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a structural schematic diagram of the vibration damping sleeve and the lower suspension rod;

[0024] Figure 3 This is a structural schematic diagram of the upper suspension rod;

[0025] Figure 4 This is a schematic diagram of the spring lower support structure;

[0026] Figure 5A schematic diagram of the spring-supported structure from another perspective;

[0027] Figure 6 This is a schematic diagram of the spring-loaded support structure;

[0028] Figure 7 This is a reference diagram showing the device installed on a washing machine;

[0029] Figure 8 This is a schematic diagram of the decomposition of force F.

[0030] The components include: 1. Upper hanging rod; 2. Washing machine shell; 3. Lower spring support; 4. Friction element; 5. Upper spring support; 6. Lower hanging rod; 7. Lower seat; 8. Washing machine outer tub; 9. Sleeve body; 10. Vibration damping spring; 11. Annular mounting groove; 12. Oil storage tank; 13. Divider plate; 14. Vent hole; 15. Connecting sleeve; 16. Reinforcing rib; 17. Guide sleeve; 18. Support sleeve; 19. Spring positioning protrusion; 20. Hanging rod seat; 21. Waterproof plate. Detailed Implementation

[0031] 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.

[0032] like Figures 1-8 As shown in the figure, the dual-suspension vibration damping device for a drum-type damping pulsator washing machine includes:

[0033] The upper end of the upper suspension rod 1 is installed on the washing machine housing 2, and the lower end of the upper suspension rod 1 is fixedly installed with a spring lower support 3. A friction element 4 is provided on the spring lower support 3, and a spring upper support 5 is slidably installed on the upper suspension rod 1.

[0034] The lower suspension rod 6 has a lower base 7 fixedly installed at its upper end, and the lower end of the lower suspension rod 6 is installed between the middle and bottom of the outer tub 8 of the washing machine.

[0035] The vibration damping sleeve includes a sleeve body 9 with open ends, an upper spring support 5 fixedly installed at the upper open end of the sleeve body 9, a lower seat 7 fixedly installed at the lower open end of the sleeve body 9, a lower spring support 3 slidably installed inside the vibration damping sleeve, a friction element 4 abutting against the inner wall of the sleeve body 9, and an upper suspension rod 1 sleeved with a vibration damping spring 10, which is located between the upper spring support 5 and the lower spring support 3. In this utility model, the sleeve body 9 can be made of plastic or metal.

[0036] like Figure 1 and Figure 4 As shown, an annular mounting groove 11 for constraining the friction element 4 is provided on the outer peripheral surface of the spring support 3, and the friction element 4 is disposed in the annular mounting groove 11.

[0037] Two oil storage tanks 12 for storing lubricating grease are provided on the outer peripheral surface of the spring support 3. The two oil storage tanks 12 are located on both sides of the annular mounting groove 11. Each oil storage tank 12 is provided with several partition plates 13. In this utility model, the partition plates 13 can separate the oil storage tanks 12, preventing the lubricating grease from moving to one side of the oil storage tank 12 due to vibration during the operation of the washing machine, so that the lubricating grease is evenly distributed in the oil storage tank 12.

[0038] The upper spring support 5 is provided with several vent holes 14 for connecting the cavities on both sides of the lower spring support 3. In this utility model, the lower spring support 3 compresses the air between the lower spring support 3 and the upper spring support 5. After being compressed, the air enters the space between the lower spring support 3 and the lower seat 7 through the vent holes 14. In this process, air damping is formed, which further improves the vibration reduction effect.

[0039] A connecting sleeve 15 is provided at the top of the spring lower support 3, and the lower suspension rod 6 is provided inside the connecting sleeve 15. Several reinforcing ribs 16 are evenly distributed on the outer circumference of the connecting sleeve 15.

[0040] like Figure 1 and Figure 6 As shown, the spring upper support 5 includes an integrally formed guide sleeve 17 and support sleeve 18. The guide sleeve 17 and support sleeve 18 are coaxially arranged and both are sleeved on the upper lifting rod 1. The guide sleeve 17 is located outside the sleeve body 9, and the support sleeve 18 is located inside the sleeve body 9. Several spring positioning protrusions 19 are inclinedly arranged on the outer circumferential surface of the support sleeve 18. The several spring positioning protrusions 19 are evenly distributed along the radial direction of the support sleeve 18.

[0041] The friction element 4 can be a cylindrical damping sleeve with open ends, or it can be made by rolling up a damping sheet wrapped around the upper rod 1.

[0042] A rod seat 20 is installed at the upper end of the upper rod 1 and the lower end of the lower rod 6. A waterproof plate 21 is fitted on the upper rod 1, and the waterproof plate 21 is located between the upper spring support 5 and the corresponding rod seat 20.

[0043] In summary, the design of the lower suspension rod in this invention allows the lower end of the device to be installed between the middle and bottom of the outer tub of the washing machine, increasing the angle between the device and the outer tub and thus improving the device's correction capability. Furthermore, the device brings the friction element close to the inner wall of the sleeve body, increasing the friction area and effectively preventing the upper suspension rod and the sleeve body from sliding relative to each other, resulting in better vibration reduction of the washing machine.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 double-suspension vibration damping device for a drum-type damping impeller washing machine, characterized in that, include: The upper end of the upper suspension rod is installed on the washing machine shell, and the lower end of the upper suspension rod is fixedly installed with a spring support. The spring support is provided with a friction element, and the upper spring support is slidably installed on the upper suspension rod. The lower suspension rod has a lower base fixedly installed at its upper end, and its lower end is installed between the middle and bottom of the outer tub of the washing machine. A vibration damping sleeve includes a sleeve body with open ends, an upper spring support fixedly installed at the upper open end of the sleeve body, a lower seat fixedly installed at the lower open end of the sleeve body, a lower spring support slidably installed inside the vibration damping sleeve, a friction element abutting against the inner wall of the sleeve body, and a vibration damping spring sleeved on the upper suspension rod, the vibration damping spring being disposed between the upper spring support and the lower spring support.

2. The double-suspension vibration damping device for a tubular damping impeller washing machine according to claim 1, characterized in that, The outer circumferential surface of the spring support is provided with an annular mounting groove for constraining the friction element, and the friction element is disposed in the annular mounting groove.

3. The double-suspension vibration damping device for a tubular damping impeller washing machine according to claim 2, characterized in that, Two oil reservoirs for storing lubricating grease are provided on the outer circumferential surface of the lower spring support. The two oil reservoirs are located on both sides of the annular mounting groove, and each oil reservoir is provided with several partition plates.

4. The double-suspension vibration damping device for a tubular damping impeller washing machine according to claim 1, characterized in that, The upper spring support is provided with several vent holes for connecting the cavities on both sides of the lower spring support.

5. The double-suspension vibration damping device for a tubular damping impeller washing machine according to claim 1, characterized in that, The top of the spring support is provided with a connecting sleeve, the lower suspension rod is disposed inside the connecting sleeve, and a number of reinforcing ribs are evenly distributed on the outer circumferential surface of the connecting sleeve.

6. The double-suspension vibration damping device for a tubular damping impeller washing machine according to claim 1, characterized in that, The upper spring support includes an integrally formed guide sleeve and a support sleeve. The guide sleeve and the support sleeve are coaxially arranged and both are sleeved on the upper hanging rod. The guide sleeve is located outside the sleeve body, and the support sleeve is located inside the sleeve body. Several spring positioning protrusions are inclinedly arranged on the outer circumferential surface of the support sleeve, and the several spring positioning protrusions are evenly distributed along the warp direction of the support sleeve.

7. The double-suspension vibration damping device for a tubular damping impeller washing machine according to claim 1, characterized in that, The friction element is a cylindrical damping sleeve with open ends, or the friction element is made by rolling up a damping sheet wrapped around the upper rod.

8. The double-suspension vibration damping device for a tubular damping impeller washing machine according to claim 1, characterized in that, A rod seat is installed at the upper end of the upper rod and the lower end of the lower rod. A waterproof plate is sleeved on the upper rod, and the waterproof plate is disposed between the upper spring support and the corresponding rod seat.

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