Shock absorber and clothes processing equipment

Abstract

The invention provides a shock absorber which comprises a shock absorption rod and a sleeve arranged outside the shock absorption rod in a sleeving mode, a magnet is arranged on the shock absorption rod, and a coil is wound around the outer portion of the sleeve. When the shock absorber works, the shock absorption rod and the sleeve move relatively, and the coil cuts magnetic induction lines to generate current. The invention further provides clothes processing equipment applying the shock absorber. According to the shock absorber and the clothes processing equipment, kinetic energy generated by vibration of the clothes processing equipment can be converted into electric energy, and therefore the purpose of energy recycling is achieved.

Description

Technical Field

[0001] The present invention belongs to the field of household appliances, and particularly relates to a shock absorber and a laundry treatment device. Background Art

[0002] When a laundry treatment device washes or spins dry clothes, the inner tub rotates rapidly, and vibrations are generated during the rotation process. Therefore, a shock absorber needs to be provided to dampen the vibrations of the inner tub during operation. However, during the shock absorption process, the shock absorber dissipates the kinetic energy of the inner tub's vibrations as heat through friction, resulting in a waste of energy. Therefore, the kinetic energy of the inner tub's vibrations can be converted into other forms of energy and stored for use by the laundry treatment device.

[0003] In view of this, the present invention is specifically proposed. Summary of the Invention

[0004] The first object of the present invention is to overcome the deficiencies of the prior art and provide a shock absorber that can convert the kinetic energy of vibrations into electrical energy.

[0005] The second object of the present invention is to provide a laundry treatment device that applies such a shock absorber.

[0006] To achieve the above first object, the basic concept of the technical solution adopted by the present invention is as follows:

[0007] A shock absorber includes a shock rod and a sleeve sleeved outside the shock rod. A magnet is provided on the shock rod, and a coil is wound around the outside of the sleeve. When the shock absorber works, the shock rod and the sleeve move relative to each other, and the coil cuts the magnetic induction line to generate an electric current.

[0008] Preferably, a plurality of insulators are further provided on the shock rod, and a plurality of magnets are provided. The magnets and the insulators are arranged at intervals along the axial direction of the shock rod.

[0009] Preferably, the magnetic poles of the magnet are distributed at both ends of the magnet in a direction perpendicular to the axial direction of the shock rod.

[0010] Preferably, the shock rod includes an extending portion extending out of the sleeve, and a connecting portion is provided on the extending portion. The connecting portion divides the shock rod into two sections and detachably connects the two sections of the shock rod.

[0011] Preferably, the inside of the shock rod is a hollow structure, and the magnets and the insulators are stacked and placed inside it.

[0012] Preferably, an elastic device in a compressed state is further provided inside the shock rod. One end of the elastic device is connected to the end of the shock rod extending out of the sleeve, and the other end abuts against the magnet or the insulator.

[0013] Preferably, one end of the sleeve is closed, and an elastic structure for supporting or suspending the shock-absorbing rod is arranged inside the closed end of the sleeve.

[0014] To achieve the above second object, the basic concept of the technical solution adopted in the present invention is:

[0015] A laundry treatment device applies the above shock absorber. The shock absorber is arranged at the top and / or bottom of the laundry treatment device and is used for suspending and / or supporting the inner barrel of the laundry treatment device, and damping the inner barrel when it operates.

[0016] Preferably, the laundry treatment device includes a storage battery. Two ends of the coil are respectively connected to two electrodes of the storage battery to store the current generated by the coil; two ends of the coil and the two electrodes of the storage battery are connected by a wire for increasing the number of turns of the coil.

[0017] Preferably, the laundry treatment device includes a support frame. Two ends of the shock absorber are respectively connected to the support frame and the inner barrel.

[0018] After adopting the above technical solution, a shock absorber and a laundry treatment device provided by the present invention have the following beneficial effects compared with the prior art:

[0019] (1) The shock absorber and the laundry treatment device provided by the present invention can convert the kinetic energy of vibration into electric energy, which is convenient for secondary utilization and reduces energy consumption.

[0020] (2) In the shock absorber and the laundry treatment device provided by the present invention, the magnet is composed of multiple magnets, and the magnetic poles are distributed at both ends of the magnet in a direction perpendicular to the axial direction of the shock-absorbing rod, which can increase the number of magnetic induction lines cut by the coil per unit time, thereby enhancing the induced current and making the kinetic energy recovery more efficient.

[0021] (3) In the shock absorber and the laundry treatment device provided by the present invention, the shock-absorbing rod can be disassembled to replace and adjust the internal magnet, which is convenient for adjusting the damping force of the shock absorber.

[0022] (4) In the shock absorber and the laundry treatment device provided by the present invention, the coil is wound around the outside of the sleeve, which is convenient for adjusting the number of turns of the coil to adjust the damping force of the shock absorber.

[0023] (5) In the shock absorber and the laundry treatment device provided by the present invention, while realizing the kinetic energy recovery, the induced current generated by the shock absorber will also generate a magnetic field, and the generated magnetic field will prevent the relative movement between the shock-absorbing rod and the sleeve, thereby further achieving the damping effect.

[0024] The following further describes in detail the specific embodiments of the present invention with reference to the accompanying drawings. Description of the Drawings

[0025] The accompanying drawings, as part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not unduly limit the present invention. Obviously, the accompanying drawings in the following description are only some embodiments, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0026] In the accompanying drawings:

[0027] Figure 1 is a schematic diagram of the laundry treatment device of the present invention,

[0028] Figure 2 is a schematic diagram of the shock absorber of the present invention,

[0029] Figure 3 is a schematic diagram of the shock rod of the present invention.

[0030] Description of the main elements in the figure:

[0031] As Figures 1 to 3 shown, 1. Support frame; 2. Inner barrel; 3. Shock absorber; 4. Sleeve; 5. Shock rod; 6. Coil; 7. Magnet; 8. Insulator; 9. Protrusion; 10. Connection part; 11. Elastic device; 12. Battery; 13. Elastic structure; 14. Wire.

[0032] It should be noted that the accompanying drawings and the text description are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Embodiments

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0035] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Embodiment 1

[0037] This embodiment provides a shock absorber 3, which includes a shock absorber rod 5 and a sleeve 4 sleeved outside the shock absorber rod 5. At least part of the shock absorber rod 5 extends out of the sleeve 4 from one end of the sleeve 4. The other end of the sleeve 4 is closed, and an elastic structure 13 for supporting or suspending the shock absorber rod 5 is provided between the closed end inside the sleeve 4 and the end of the shock absorber rod 5 extending into the sleeve 4.

[0038] The shock absorber 3 is installed on a mechanical device for damping the components of the operating device. The mechanical device can be a laundry treatment device, an automobile, etc.

[0039] Preferably, the shock absorber rod 5 is a piston rod, and the diameter of the shock absorber rod 5 is approximately equal to the inner diameter of the sleeve 4. At this time, the outer wall of the shock absorber rod 5 is in close contact with the inner wall of the sleeve 4, and the shock absorber rod 5 can slide smoothly coaxially with the sleeve 4 inside the sleeve 4; alternatively, the shock absorber rod 5 is in two parts, including a connecting rod with a diameter smaller than the inner diameter of the sleeve 4 and a piston. The piston is arranged at the end of the connecting rod extending into the sleeve 4, and the diameter of the piston is approximately equal to the inner diameter of the sleeve 4. At this time, the outer wall of the piston is in close contact with the inner wall of the sleeve 4, and the piston can slide smoothly coaxially with the sleeve 4 inside the sleeve 4.

[0040] The elastic structure 13 can be a spring structure, a hydraulic structure, a pneumatic structure, etc.

[0041] A coil 6 is wound around the outside of the sleeve 4, and the two ends of the coil 6 are connected to the two electrodes of the storage battery 12.

[0042] A magnet 7 is provided on the shock absorber rod 5. When the shock absorber 3 works, the elastic structure 13 is compressed or stretched, the shock absorber rod 5 and the sleeve 4 move relative to each other, the coil 6 cuts the magnetic induction line, electromagnetic induction occurs, an induced current is generated, and the generated induced current is stored in the storage battery 12.

[0043] Optionally, in this embodiment, there are multiple magnets 7 provided on the shock absorber rod 5, and there are also multiple insulators 8 provided on the shock absorber rod 5, which are arranged at intervals along the axial direction of the shock absorber rod 5 with the magnets 7. The magnetic poles of the magnets 7 are distributed at both ends of the magnets 7 in a direction perpendicular to the axial direction of the shock absorber rod 5. The insulators 8 are provided on the shock absorber rod 5 to isolate the magnets 7 and prevent the magnets 7 from attracting or repelling each other. The magnets 7 are composed of multiple magnets 7 and the magnetic poles are distributed at both ends of the magnets 7 in a direction perpendicular to the axial direction of the shock absorber rod 5, in order to increase the number of magnetic induction lines cut by the coil 6 per unit time, thereby enhancing the induced current and making the kinetic energy recovery more efficient.

[0044] During the operation of the shock absorber 3, the shock absorber rod 5 and the sleeve 4 move relative to each other, and the coil 6 cuts the magnetic induction lines to generate an induced current, and the induced current will generate a magnetic field. According to Lenz's law: the magnetic field generated by the induced current always opposes the change in the magnetic flux that causes the induced current. Therefore, during the operation of the shock absorber 3, the magnetic field generated by the induced current will prevent the shock absorber rod 5 and the sleeve 4 from moving relative to each other, thereby further achieving the shock absorption effect.

[0045] The shock absorber rod 5 includes a protruding portion 9 that protrudes from the sleeve 4, and a connecting portion 10 is provided on the protruding portion 9; the connecting portion 10 divides the shock absorber rod 5 into two sections and detachably connects the two sections of the shock absorber rod 5. Preferably, the connecting portion 10 is a threaded connection structure, and mutually cooperating threads are respectively provided on the two sections of the shock absorber rod 5.

[0046] The interior of the shock absorber rod 5 is a hollow structure, and the magnets 7 and the insulators 8 are stacked and placed inside it. An elastic device 11 in a compressed state is also provided inside the shock absorber rod 5. One end of the elastic device 11 is connected to the end of the shock absorber rod 5 that protrudes from the sleeve 4, and the other end abuts against the magnet 7 or the insulator 8.

[0047] Preferably, the elastic device 11 is a spring structure, one end of which is connected to the end of the shock absorber rod 5 that protrudes from the sleeve 4, and the other end abuts against the magnet 7 or the insulator 8 and is in a compressed state to fix the stacked magnets 7 and insulators 8.

[0048] Open the shock absorber rod 5 through the connecting portion 10 and remove the elastic device 11 that fixes the magnets 7 and the insulators 8. At this time, the type, size, shape, direction, quantity, etc. of the magnets 7 inside the shock absorber rod 5 can be adjusted to adjust the magnetic force of the magnets 7, thereby changing the damping force of the shock absorber 3.

[0049] Alternatively, an installation groove may be provided on the shock absorber rod 5. The magnet 7 and the insulator 8 are arranged at intervals and fixed in the installation groove. To ensure the smooth sliding of the shock absorber rod 5 in the sleeve 4, the outer wall of the shock absorber rod 5 should be smooth. Therefore, the shock absorber rod 5 is composed of an installation part with the installation groove and a shock absorber rod sleeve sleeved outside the installation part. At this time, if the magnet 7 and the insulator 8 inside the shock absorber rod 5 need to be replaced and adjusted, the shock absorber rod sleeve sleeved outside the installation part needs to be pulled off, and the magnet 7 and the insulator 8 fixed in the installation groove are replaced to change the damping force of the shock absorber 3. When the shock absorber 3 works, the shock absorber rod sleeve sleeved outside the installation part and the sleeve 4 move relative to each other, and the coil 6 generates an induced current.

[0050] Both ends of the coil 6 are connected to the two electrodes of the storage battery 12 through a wire 14 with a certain margin. The margin of the wire 14 is used to increase the number of turns of the coil 6 outside the sleeve 4 to increase the damping force of the shock absorber 3. Optionally, when it is necessary to reduce the damping force of the shock absorber 3, only the number of turns of the coil 6 wound outside the sleeve 4 needs to be reduced.

[0051] The coil 6 is wound around the outside of the sleeve 4, which is convenient for adjusting the number of turns of the coil 6 to adjust the damping force of the shock absorber 3.

[0052] Embodiment 2

[0053] This embodiment provides a shock absorber 3, including a shock absorber rod 5 and a sleeve 4 sleeved outside the shock absorber rod 5. At least part of the shock absorber rod 5 extends out of the sleeve 4 from one end of the sleeve 4. A coil 6 is wound around the outside of the sleeve 4, and both ends of the coil 6 are connected to the two electrodes of the storage battery 12.

[0054] A magnet 7 is provided on the shock absorber rod 5. When the shock absorber 3 works, the shock absorber rod 5 and the sleeve 4 move relative to each other, the coil 6 cuts the magnetic induction line, electromagnetic induction occurs, an induced current is generated, and the generated induced current is stored in the storage battery 12, thereby realizing the kinetic energy recovery function.

[0055] And the induced current will generate a magnetic field. According to Lenz's law: The magnetic field generated by the induced current always opposes the change in the magnetic flux that causes the induced current. Therefore, the magnetic field generated by the induced current will oppose the relative movement of the shock absorber rod 5 and the sleeve 4, and the shock absorber 3 generates a damping force, thereby realizing the shock absorption function. At this time, there is no need to additionally set an elastic structure 13 inside the shock absorber 3 for shock absorption, which simplifies the structure of the shock absorber 3 and reduces the production cost of the shock absorber 3.

[0056] Optionally, in this embodiment, there are multiple magnets 7 provided on the shock absorber rod 5. There are also multiple insulators 8 provided on the shock absorber rod 5, which are arranged at intervals along the axial direction of the shock absorber rod 5 with the magnets 7. The magnetic poles of the magnets 7 are distributed at both ends of the magnets 7 in a direction perpendicular to the axial direction of the shock absorber rod 5. The insulators 8 are provided on the shock absorber rod 5 to isolate the magnets 7 and prevent the magnets 7 from attracting or repelling each other. The magnet 7 is composed of multiple magnets 7 and the magnetic poles are distributed at both ends of the magnet 7 in a direction perpendicular to the axial direction of the shock absorber rod 5, in order to increase the number of magnetic induction lines cut by the coil 6 per unit time, thereby enhancing the induced current and making the kinetic energy recovery more efficient. After the induced current becomes larger, the magnetic field strength generated by the induced current will also become larger, and the damping force of the shock absorber 3 will increase accordingly.

[0057] The shock absorber rod 5 includes an extending portion 9 extending out of the sleeve 4, and a connecting portion 10 is provided on the extending portion 9; the connecting portion 10 divides the shock absorber rod 5 into two sections and detachably connects the two sections of the shock absorber rod 5. Preferably, the connecting portion 10 is a threaded connection structure, and mutually cooperating threads are respectively provided on the two sections of the shock absorber rod 5.

[0058] The inside of the shock absorber rod 5 is a hollow structure, and the magnets 7 and the insulators 8 are stacked and placed inside it. An elastic device 11 in a compressed state is also provided inside the shock absorber rod 5. One end of the elastic device 11 is connected to the end of the shock absorber rod 5 extending out of the sleeve 4, and the other end abuts against the magnet 7 or the insulator 8.

[0059] Preferably, the elastic device 11 is a spring structure, one end of which is connected to the end of the shock absorber rod 5 extending out of the sleeve 4, and the other end abuts against the magnet 7 or the insulator 8 and is in a compressed state to fix the stacked magnets 7 and insulators 8.

[0060] Open the shock absorber rod 5 through the connecting portion 10 and remove the elastic device 11 that fixes the magnets 7 and the insulators 8. At this time, the type, size, shape, direction, quantity, etc. of the magnets 7 inside the shock absorber rod 5 can be adjusted to adjust the magnetic force of the magnets 7 and change the damping force of the shock absorber 3.

[0061] Both ends of the coil 6 are connected to the two electrodes of the storage battery 12 through a wire 14 with a certain margin. The margin of the wire 14 is used to increase the number of turns of the coil 6 outside the sleeve 4 to increase the damping force of the shock absorber 3. Optionally, when it is necessary to reduce the damping force of the shock absorber 3, only the number of turns of the coil 6 wound outside the sleeve 4 needs to be reduced.

[0062] Embodiment Three

[0063] This embodiment provides a clothing treatment device, which applies the shock absorber 3 as described in Embodiment One or Embodiment Two.

[0064] The clothing treatment device can be a washing machine, a dewatering tub, a dryer, etc.

[0065] The shock absorber 3 is arranged at the top and / or bottom of the clothing treatment device, and is used for hanging and / or supporting the inner tub 2 of the clothing treatment device, and damping the inner tub 2 when it is running.

[0066] The clothing treatment device further includes a support frame 1, the inner tub 2 is arranged in the support frame 1, and two ends of the shock absorber 3 are respectively connected to the support frame 1 and the inner tub 2.

[0067] Optionally, the shock absorber 3 is arranged above the inner tub 2 of the clothing treatment device. One end of the shock absorber 3 is fixed to the support frame 1, and the other end is fixed to the inner tub 2, so as to hang and fix the inner tub 2, and damp the inner tub 2 when it is running, avoiding excessive vibration when the inner tub 2 rotates and runs, which impacts the fixing structure of the inner tub 2 and the clothing treatment device; at the same time, avoiding excessive vibration when the inner tub 2 runs, and the clothing treatment device shakes to generate noise and displacement.

[0068] When the elastic structure 13 of the shock absorber 3 is a spring structure and the shock absorber 3 is arranged above the inner tub 2, two ends of the spring structure are respectively connected to the closed end of the sleeve 4 and the end of the shock rod 5 extending into the sleeve 4. When the inner tub 2 vibrates and moves downward, it drives the shock rod 5 to move downward. The shock rod 5 is connected to the spring structure, and the spring structure is stretched downward by the shock rod 5. The elastic potential energy of the spring structure increases and tends to retract, thereby hindering the downward movement of the shock rod 5, that is, hindering the downward movement of the inner tub 2. When the inner tub 2 vibrates and moves upward, it drives the shock rod 5 to move upward. The shock rod 5 is connected to the spring structure, and the spring structure is compressed upward by the shock rod 5. The elastic potential energy of the spring structure increases and tends to extend, thereby hindering the upward movement of the shock rod 5, that is, the upward movement of the inner tub 2. Thus, the shock absorber 3 realizes the hindrance to the vibration of the inner tub 2 and achieves the damping effect.

[0069] Optionally, the shock absorber 3 is arranged below the inner tub 2 of the clothing treatment device. When the elastic structure 13 of the shock absorber 3 is a spring structure and the shock absorber 3 is arranged below the inner tub 2, two ends of the spring structure are respectively connected to the closed end of the sleeve 4 and the end of the shock rod 5 extending into the sleeve 4. When the inner tub 2 vibrates and moves downward, it drives the shock rod 5 to move downward. The shock rod 5 is connected to the spring structure, and the spring structure is compressed downward by the shock rod 5. The elastic potential energy of the spring structure increases and tends to extend, thereby hindering the downward movement of the shock rod 5, that is, hindering the downward movement of the inner tub 2. When the inner tub 2 vibrates and moves upward, it drives the shock rod 5 to move upward. The shock rod 5 is connected to the spring structure, and the spring structure is stretched upward by the shock rod 5. The elastic potential energy of the spring structure increases and tends to retract, thereby hindering the upward movement of the shock rod 5, that is, hindering the upward movement of the inner tub 2. Thus, the shock absorber 3 realizes the hindrance to the vibration of the inner tub 2 and achieves the damping effect.

[0070] Optionally, shock absorbers 3 are provided both above and below the inner barrel 2, for suspending and supporting the inner barrel 2 and damping the inner barrel 2 when the inner barrel 2 is operating.

[0071] Optionally, the elastic structure 13 is a spring structure, a hydraulic structure or a pneumatic structure. The installation position of the shock absorber 3 and the specific structure of the elastic structure 13 can be arbitrarily combined according to actual situations, enhancing the practicability of the shock absorber 3.

[0072] After adopting the above technical solutions, the shock absorber and the laundry treatment device provided by the present invention have the following beneficial effects compared with the prior art:

[0073] (1) The shock absorber and the laundry treatment device provided by the present invention can convert the kinetic energy of vibration into electric energy, which is convenient for secondary utilization and reduces energy consumption.

[0074] (2) The shock absorber and the laundry treatment device provided by the present invention, the magnet is composed of a plurality of magnets and the magnetic poles are distributed at both ends of the magnet in a direction perpendicular to the axial direction of the shock rod, which can increase the number of magnetic induction lines cut by the coil per unit time, thereby enhancing the induced current and making the kinetic energy recovery more efficient.

[0075] (3) The shock absorber and the laundry treatment device provided by the present invention, the shock rod can be disassembled to replace and adjust the internal magnet, facilitating the adjustment of the damping force of the shock absorber.

[0076] (4) The shock absorber and the laundry treatment device provided by the present invention, the coil is wound around the outside of the sleeve, facilitating the adjustment of the number of turns of the coil to adjust the damping force of the shock absorber.

[0077] (5) The shock absorber and the laundry treatment device provided by the present invention, while realizing the recovery of kinetic energy, the induced current generated by the shock absorber will generate a magnetic field, and the generated magnetic field will hinder the relative movement of the shock rod and the sleeve, thereby further realizing the damping effect.

[0078] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present invention, can make some changes or modifications using the technical content mentioned above as equivalent embodiments of equivalent changes. The implementation schemes in the above embodiments can be further combined or replaced, but as long as the content does not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention.

Claims

1. A shock absorber, characterized in that, it includes a shock absorber rod and a sleeve sleeved outside the shock absorber rod. A magnet is provided on the shock absorber rod, and a coil is wound around the outside of the sleeve; when the shock absorber works, the shock absorber rod and the sleeve move relatively, and the coil cuts the magnetic induction line to generate an electric current.

2. The shock absorber according to claim 1, characterized in that, a plurality of insulators are further provided on the shock absorber rod, the magnets are multiple, and the magnets and the insulators are arranged at intervals along the axial direction of the shock absorber rod.

3. The shock absorber according to claim 2, characterized in that, the magnetic poles of the magnet are distributed at both ends of the magnet along the direction perpendicular to the axial direction of the shock absorber rod.

4. The shock absorber according to claim 1, characterized in that, the shock absorber rod includes an extending portion extending out of the sleeve, and a connecting portion is provided on the extending portion; the connecting portion divides the shock absorber rod into two sections and detachably connects the two sections of the shock absorber rod.

5. The shock absorber according to claim 2, characterized in that, the inside of the shock absorber rod is a hollow structure, and the magnets and the insulators are stacked inside it.

6. The shock absorber according to claim 2, characterized in that, an elastic device in a compressed state is further arranged inside the shock absorber rod. One end of the elastic device is connected to the end of the shock absorber rod extending out of the sleeve, and the other end abuts against the magnet or the insulator.

7. The shock absorber according to any one of claims 1-6, characterized in that, one end of the sleeve is closed, and an elastic structure for supporting or suspending the shock absorber rod is arranged inside the closed end of the sleeve.

8. A laundry treatment device, characterized in that, the shock absorber according to any one of claims 1-7 is applied, and the shock absorber is arranged at the top and / or bottom of the laundry treatment device for suspending and / or supporting the inner tub of the laundry treatment device and damping it when the inner tub is running.

9. The laundry treatment device according to claim 8, characterized in that, it includes a storage battery, and both ends of the coil are respectively connected to the two electrodes of the storage battery to store the current generated by the coil; both ends of the coil and the two electrodes of the storage battery are connected by a wire for increasing the number of turns of the coil.

10. The laundry treatment device according to claim 8, characterized in that, it includes a support frame, and both ends of the shock absorber are respectively connected to the support frame and the inner tub.

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