Vibration reduction device and washing machine

Abstract

The present invention provides a vibration reduction device and a washing machine. The vibration reduction device comprises a first connection part and a second connection part, wherein a damping part and a spring are arranged in parallel between the first connection part and the second connection part; the damping part comprises a first sleeve and a second sleeve which are nested together and can approach or move away from each other, the first sleeve is connected to the first connection part, the second sleeve is connected to the second connection part, a first fixing piece is arranged at one end of the first sleeve close to the first connection part, the first fixing piece is arranged with a first annular groove, and the opening of the first annular groove faces the second connection part; the spring is sleeved outside the first sleeve and the second sleeve, the first end of the spring is arranged in the first annular groove, and the first annular groove is filled with an elastic piece, so as to improve the vibration reduction effect when the spring part in the composite spring damper is under pressure.

Description

Technical Field

[0001] The invention belongs to the technical field of washing machines, and in particular relates to a vibration reduction device and a washing machine. Background Art

[0002] Existing washing machine vibration reduction devices mostly use pure spring vibration reduction devices or pure damper vibration reduction devices to reduce the vibration of the outer drum. However, the vibration reduction performance of this type of vibration reduction device is relatively limited compared to the composite (spring damper) vibration reduction device, and the vibration reduction performance is relatively poor. Although the composite spring damper of the existing washing machine has improved vibration reduction performance, the change in the vibration direction of the outer drum will result in poor vibration reduction effect of the composite spring damper.

[0003] How to improve the vibration reduction effect when the spring part of the composite spring damper is under pressure is a technical problem that urgently needs to be solved. Summary of the invention

[0004] Therefore, the present invention provides a vibration reduction device and a washing machine, which can improve the vibration reduction effect when the spring part in the composite spring damper is compressed.

[0005] The present invention provides a vibration reduction device, which includes a first connecting part and a second connecting part, wherein a damping part and a spring are arranged in parallel between the first connecting part and the second connecting part; the damping part includes a first sleeve and a second sleeve which are nested together and can approach or move away from each other, the first sleeve is connected to the first connecting part, the second sleeve is connected to the second connecting part, a first fixing piece is arranged at one end of the first sleeve close to the first connecting part, the first fixing piece is provided with a first annular groove, and the opening of the first annular groove faces the second connecting part; the spring is sleeved outside the first sleeve and the second sleeve, the first end of the spring is arranged in the first annular groove, and the first annular groove is filled with the elastic piece.

[0006] In some embodiments, a second fixing member is provided at one end of the second sleeve close to the second connecting portion, and the second fixing member is provided with a second annular groove, and the opening of the second annular groove faces the first connecting portion; the second end of the spring is arranged in the second annular groove, and the second annular groove is filled with the elastic member.

[0007] In some embodiments, the first sleeve is inserted into the second sleeve, and a damping layer is disposed between an outer wall surface of the first sleeve and an inner wall surface of the second sleeve.

[0008] In some embodiments, a first threaded hole is provided at one end of the first sleeve facing the first connecting portion, and the first connecting portion includes a first screw, and the first screw is threadedly connected to the first threaded hole;

[0009] and / or,

[0010] A second threaded hole is provided at one end of the second sleeve facing the second connecting portion. The second connecting portion includes a second screw rod, and the second screw rod is threadedly connected to the second threaded hole.

[0011] In some embodiments, the first screw is connected to the first threaded hole in a non-sealed manner;

[0012] and / or,

[0013] The second screw rod is connected to the second threaded hole in a non-sealed manner.

[0014] In some embodiments, the inner wall surface of the first annular groove is uneven, and / or the inner wall surface of the second annular groove is uneven.

[0015] In some embodiments, the inner wall surface or the outer wall surface of the first annular groove is provided with a first thread structure, the rotation direction of the spring is the same as the rotation direction of the first thread structure, and a portion of the spring is inserted between two adjacent thread teeth of the first thread structure;

[0016] and / or,

[0017] The inner wall surface or the outer wall surface of the second annular groove is provided with a second thread structure, the rotation direction of the spring is the same as the rotation direction of the second thread structure, and part of the spring is stuck between two adjacent thread teeth of the second thread structure.

[0018] In some embodiments, the first connecting portion includes a first connecting body, and the first connecting body is detachably connected to the first screw rod;

[0019] and / or,

[0020] The second connecting portion includes a second connecting body, and the second connecting body is detachably connected to the second screw rod.

[0021] In some embodiments, the first connection portion includes a first transfer bridge, the first transfer bridge is provided with a first groove facing away from the second connection portion, the bottom of the first groove is provided with a first through hole, the first screw rod is passed through the first through hole, and one end of the first screw rod located in the first groove is provided with a first rod head; the first connector is connected to the first groove via a threaded pair;

[0022] and / or,

[0023] The second connecting part includes a second adapter bridge, the second adapter bridge is provided with a second groove facing away from the first connecting part, the bottom of the second groove is provided with a second through hole, the second screw rod is passed through the second through hole, and the second screw rod is provided with a second rod head at one end located in the second groove; the second connecting body is connected to the second groove via a threaded pair.

[0024] In some embodiments, a first bushing is disposed in the first adapter bridge, and the first bushing is disposed between the first rod head and the inner wall surface of the first adapter bridge;

[0025] and / or,

[0026] A second bushing is arranged in the second adapter bridge, and the second bushing is arranged between the second rod head and the inner wall surface of the second adapter bridge.

[0027] The present invention also provides a washing machine, comprising a shell, an outer drum and the vibration reduction device, wherein the first connecting part is connected to the shell, the second connecting part is connected to the outer drum, and the spring is in a stretched state.

[0028] The damping part in the present application includes two first sleeves and a second sleeve, and the two sleeves are nested together and have a guiding effect on the movement of the two connecting parts. No matter what the vibration direction of the outer drum is, the movement direction of the two sleeves is consistent with the connecting line of the two connecting parts, thereby improving the vibration reduction effect of the vibration reduction device; the spring is fixed by an elastic member, and no matter whether the spring is subjected to pressure or tension, both ends of the spring can be stably connected to the fixing member, especially when the spring is subjected to pressure, the two ends are firmly fixed, and the spring can be stably squeezed and contracted, thereby improving the vibration reduction effect of the vibration device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0030] Figure 1 is an exploded view of a vibration reduction device according to an embodiment of the present invention;

[0031] Figure 2 is a schematic diagram of a first appearance structure of a vibration reduction device according to an embodiment of the present invention;

[0032] Figure 3 The embodiment of the present invention Figure 2 Sectional view at AA;

[0033] Figure 4 is a schematic diagram of a washing machine according to an embodiment of the present invention provided with a vibration reduction device;

[0034] Figure 5 is a schematic diagram of a second appearance structure of a vibration reduction device according to an embodiment of the present invention;

[0035] Figure 6 is a schematic structural diagram of a first fixing member according to an embodiment of the present invention;

[0036] The accompanying drawings are marked as follows:

[0037] 1. First sleeve; 101. First threaded hole; 102. First fixing member; 1021. First annular groove; 2. Second sleeve; 201. Second threaded hole; 202. Second fixing member; 2021. Second annular groove; 3. Spring; 301. Elastic member; 4. Damping layer; 501. First screw rod; 502. Second screw rod; 5011. First gap; 5021. Second gap; 5012. First anti-loosening nut; 5022. Second anti-loosening nut; 5013. First rod head; 5023. Second rod head; 601. First connector; 602. Second connector; 701. First transfer bridge; 702. Second transfer bridge; 7011. First groove; 7021. Second groove; 801. First bushing; 802. Second bushing; 9. Outer roller. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0040] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0041] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0042] The present invention provides a vibration reduction device and a washing machine, which can solve the technical problem in the prior art that the composite spring damper has a poor vibration reduction effect on an external vibration source with a changing vibration direction.

[0043] See also Figure 1-6 As shown, the present invention provides a vibration reduction device, which includes a first connecting part and a second connecting part, and a damping part and a spring 3 are arranged in parallel between the first connecting part and the second connecting part; the damping part includes a first sleeve 1 and a second sleeve 2, the first sleeve 1 is connected to the first connecting part, and the second sleeve 2 is connected to the second connecting part, the first sleeve 1 is inserted into the second sleeve 2 and can slide in a direction close to or away from the second sleeve 2, and a damping layer 4 is arranged between the outer wall surface of the first sleeve 1 and the inner wall surface of the second sleeve 2.

[0044] The present application arranges a damping part and a spring in parallel between two connecting parts, and two sleeves are arranged inside the spring 3, so that the vibration reduction device occupies a smaller space, and the spring 3 can be stretched or compressed, and can store kinetic energy by stretching or by compression, thereby improving the vibration reduction effect of the vibration reduction device.

[0045] Preferably, Figure 1-3 , Figure 4As shown, a first fixing member 102 is provided at one end of the first sleeve 1 close to the first connecting portion, a second fixing member 202 is provided at one end of the second sleeve 2 close to the second connecting portion, the spring 3 is connected to the first fixing member 102 via an elastic member 301, and the spring 3 is connected to the second fixing member 202 via an elastic member 301.

[0046] Both ends of the spring 3 are fixed to the two sleeves through the elastic member 301 respectively. When the spring 3 is pulled or compressed, the elastic member 301 can produce a certain deformation, and part of the kinetic energy is transferred to the elastic member 301. The elastic member 301 not only fixes the spring 3, but also has a vibration reduction effect, thereby improving the vibration reduction performance of the vibration reduction device.

[0047] The two sleeves are nested together and have a guiding effect on the movement of the two connecting parts. No matter what the vibration direction of the outer drum is, the moving direction of the two sleeves and the connecting line of the two connecting parts are consistent, thereby improving the vibration reduction effect of the vibration reduction device.

[0048] Preferably, Figure 1-3 , Figure 4 As shown, the first fixing member 102 is provided with a first annular groove 1021, and the opening of the first annular groove 1021 faces the second connecting portion; the second fixing member 202 is provided with a second annular groove 2021, and the opening of the second annular groove 2021 faces the first connecting portion; the first end of the spring 3 is arranged in the first annular groove 1021, and the second end of the spring 3 is arranged in the second annular groove 2021, and the first annular groove 1021 and the second annular groove 2021 are both filled with the elastic member 301.

[0049] The two ends of the spring 3 are arranged in an annular groove, and an elastic member 301 is arranged in the annular groove, so that the connection between the spring 3 and the fixing member can be firmly connected, and the spring 3 can be prevented from being separated from the fixing member when being pulled. Since the two ends of the spring 3 are fixed in the annular groove by the elastic member 301, the spring 3 is fixed by the elastic member 301, and no matter whether the spring 3 is subjected to pressure or tension, the two ends of the spring 3 can be stably connected to the fixing member, especially when the spring 3 is subjected to pressure, the two ends are firmly fixed, and the spring can be stably squeezed and contracted, thereby improving the vibration reduction effect of the vibration device.

[0050] Furthermore, the elastic member 301 can be formed by pouring molten plastic into the annular groove, and the molten plastic solidifies in the annular groove. The plastic is fully wrapped by pouring molten plastic, and the molten plastic solidifies to form the elastic member 301 to fix the spring 3.

[0051] The spring 3 mainly plays the role of vibration reduction and buffering, and the damping part mainly plays the role of energy consumption. When the vibration reduction device is used in a washing machine, the outer drum 9 of the washing machine is reduced in vibration, and the spring and the damping part jointly reduce the vibration of the washing machine, thereby improving the vibration reduction effect of the washing machine. Among them, the first sleeve 1 and the second sleeve 2 are nested together, and a damping layer 4 is arranged between the two sleeves. When the first sleeve 1 and the second sleeve 2 slide relative to each other, friction work is done on the damping layer 4 at the same time, and the kinetic energy is converted into heat energy and transferred to the damping layer 4, thereby realizing energy conversion. In addition, when the first sleeve 1 and the second sleeve 2 slide relative to each other, the first sleeve 1 and the second sleeve 2 play a guiding role, so that the two sleeves can only move in one direction (the straight line direction of approaching or moving away from each other, which is also the connecting direction of the two connecting parts), thereby improving the vibration reduction effect of the vibration reduction device.

[0052] The damping layer 4 may be composed of damping grease.

[0053] Preferably, Figure 1-3 , Figure 4 As shown, the first fixing member 102 is provided with a first annular groove 1021, and the opening of the first annular groove 1021 faces the second connecting portion; the second fixing member 202 is provided with a second annular groove 2021, and the opening of the second annular groove 2021 faces the first connecting portion; the first end of the spring 3 is arranged in the first annular groove 1021, and the second end of the spring 3 is arranged in the second annular groove 2021, and the first annular groove 1021 and the second annular groove 2021 are both filled with the elastic member 301.

[0054] Both ends of the spring 3 are arranged in an annular groove, and an elastic member 301 is arranged in the annular groove, so that the connection between the spring 3 and the fixing member can be firmly connected to prevent the spring 3 from being separated from the fixing member when being pulled. Further, the elastic member 301 can be formed by pouring molten plastic into the annular groove, and the molten plastic solidifies in the annular groove. By pouring molten plastic, the plastic fully wraps the spring 3, and the molten plastic solidifies to form the elastic member 301 to fix the spring 3.

[0055] Preferably, Figure 3 As shown, a first threaded hole 101 is provided at one end of the first sleeve 1 facing the first connecting portion, and the first connecting portion includes a first screw rod 501, and the first screw rod 501 is threadedly connected to the first threaded hole 101;

[0056] and / or,

[0057] A second threaded hole 201 is disposed at one end of the second sleeve 2 facing the second connection portion. The second connection portion includes a second screw rod 502 . The second screw rod 502 is in non-sealed threaded connection with the second threaded hole 201 .

[0058] A first threaded hole 101 is provided at one end of the first sleeve 1 facing the first connecting portion. The first connecting portion includes a first screw rod 501 . The first screw rod 501 is threadedly connected to the first threaded hole 101 .

[0059] The first connection part is connected to the first sleeve 1 through the first screw 501 and the first threaded hole 101. The length adjustment of the first screw 501 screwed into the first threaded hole 101 can adjust the distance between the first connection part and the second connection part, thereby adjusting the preload force of the vibration reduction device as a whole. By adjusting the preload force of the vibration reduction device, the forces of multiple vibration reduction devices on the outer drum 9 can be balanced, thereby improving the stability of the washing machine during operation. Specifically, the elastic member 301 is pulled and has a pulling force on the outer drum 9. The pulling force can restore the outer drum 9 to its original position faster, thereby preventing the outer drum 9 from vibrating too much.

[0060] Preferably, Figure 3 As shown, the first screw rod 501 is connected to the first threaded hole 101 in a non-sealed manner;

[0061] and / or,

[0062] The second screw rod 502 is connected to the second threaded hole 201 in a non-sealed manner.

[0063] The first screw rod 501 is connected to the first threaded hole 101 in a non-sealed manner, so that when the first sleeve 1 and the second sleeve 2 slide against each other, the air between the two sleeves can flow with the external air through the first threaded hole 101 to achieve balance, ensuring that when the two sleeves can slide against each other, the gas will not flow out from the outer wall surface of the first sleeve 1 and the inner wall surface of the second sleeve 2 to affect the damping layer 4, thereby improving the damping effect. Since the first screw rod 501 and the first threaded hole 101 are threadedly connected, the air between the two sleeves and the external air have a longer path (the path is spiral) when flowing through the first gap 5011 between the outer surface of the first screw rod 501 and the inner surface of the first threaded hole 101, and the first gap 5011 also has a damping effect on the flow of air, further improving the vibration reduction and energy absorption effect of the vibration reduction device.

[0064] The interaction and technical effects between the second sleeve 2 , the second threaded hole 201 and the second screw rod 502 are consistent with the above, and a second gap 5021 is formed between the outer edge of the second threaded rod and the inner surface of the second threaded hole 201 .

[0065] The first screw rod 501 is provided with a first anti-loosening nut 5012. When the first screw rod 501 is screwed into the first threaded hole 101 at a suitable position, the first screw rod 501 is locked on the first sleeve 1 by the first anti-loosening nut 5012; that is, the first anti-loosening nut 5012 and the first threaded hole 101 form a double nut anti-loosening structure. In order to ensure that the air in the two sleeves and the external air can circulate with each other, a notch can be set at the top of the thread teeth of the first anti-loosening nut 5012, and the notch penetrates the first anti-loosening nut 5012 along the axial direction of the first anti-loosening nut 5012. The second screw rod 502 is provided with a second anti-loosening nut 5022. The second anti-loosening nut 5022 has the same configuration as the first anti-loosening nut 5012, and the same technical effect is achieved.

[0066] Furthermore, the first fixing member 102 may be provided with an internal thread, and the outer wall of the first sleeve 1 at one end near the first connection portion may be provided with an external thread, and the first fixing member 102 and the first sleeve 1 are connected via threads; similarly, the second fixing member 202 and the second sleeve 2 are also connected via threads, and the preload force of the spring can be adjusted by adjusting the position of the first fixing member 102 on the first sleeve 1 and the position of the second fixing member 202 on the second sleeve 2. Grease may be applied between the internal thread and the external thread for lubrication to facilitate the rotation of the first fixing member 102, and the second fixing member 202 is configured in the same manner as the first fixing member 102.

[0067] Preferably, the inner wall surface of the first annular groove 1021 is uneven, and / or the inner wall surface of the second annular groove 2021 is uneven.

[0068] By providing the first annular groove 1021 with an uneven structure, the bonding strength between the elastic member 301 and the first annular groove 1021 can be enhanced. Similarly, providing the second annular groove 2021 with an uneven structure can enhance the bonding strength between the elastic member 301 and the second annular groove 2021. The maximum tension and pressure that the elastic member 301 can withstand are increased.

[0069] Further, the inner wall surface of the first annular groove 1021 is provided with a first convex structure or a first concave structure, and the inner wall surface of the second annular groove 2021 is provided with a second convex structure or a second concave structure. Or, the inner wall surfaces of the first annular groove 1021 and the second annular groove 2021 are provided with through holes (such as Figure 6 The first protruding structure, the first recessed structure, the second protruding structure, the second recessed structure and the through hole can all increase the connection firmness between the elastic member 301 and the fixing member.

[0070] Preferably, the inner wall surface or the outer wall surface of the first annular groove 1021 is provided with a first thread structure, the rotation direction of the spring 3 is the same as the rotation direction of the first thread structure, and at least part of the spring 3 is stuck between two adjacent thread teeth of the first thread structure;

[0071] and / or,

[0072] The inner wall surface or the outer wall surface of the second annular groove 2021 is provided with a second thread structure, the rotation direction of the spring 3 is the same as the rotation direction of the second thread structure, and at least part of the spring 3 is stuck between two adjacent thread teeth of the second thread structure.

[0073] The spring 3 can be connected with the fixing member by welding, hanging or extrusion in the first annular groove 1021, or it can be connected by a similar threaded connection method, and then the elastic member 301 is filled, and further, the connection is made by a threaded connection method. Specifically, the inner wall surface or outer wall surface of the first annular groove 1021 is provided with a first thread structure, the rotation direction of the spring 3 is the same as the rotation direction of the first thread structure, and at least part of the spring 3 is stuck between two adjacent thread teeth of the first thread structure; that is, the spring 3 as a similar thread structure cooperates with the first thread structure of the inner wall surface or outer wall surface of the first annular groove 1021 to achieve the preliminary fixation of the spring 3, and at the same time, the first thread structure as a structure that makes the inner wall surface of the first annular groove 1021 uneven improves the connection firmness between the elastic member 301 and the inner wall surface of the first annular groove 1021. The first thread structure can cooperate with the spring 3 to improve the connection firmness between the spring 3 and the first fixing member 102, and can also cooperate with the elastic member 301 to improve the connection firmness between the elastic member 301 and the first fixing member 102.

[0074] The inner wall surface or outer wall surface of the second annular groove 2021 is provided with a second thread structure, the rotation direction of the spring 3 is the same as that of the second thread structure, and at least part of the spring 3 is stuck between two adjacent thread teeth of the second thread structure; that is, the spring 3, as a similar thread structure, cooperates with the second thread structure of the inner wall surface or outer wall surface of the second annular groove 2021 to achieve preliminary fixation of the spring 3, and at the same time, the second thread structure, as a structure that makes the inner wall surface of the second annular groove 2021 uneven, improves the connection firmness between the elastic member 301 and the inner wall surface of the second annular groove 2021. The second thread structure can cooperate with the spring 3 to improve the connection firmness between the spring 3 and the second fixing member 202, and can also cooperate with the elastic member 301 to improve the connection firmness between the elastic member 301 and the second fixing member 202.

[0075] Preferably, Figure 1-3 , Figure 4As shown, the first connecting portion includes a first connecting body 601, and the first connecting body 601 is detachably connected to the first screw rod 501;

[0076] and / or,

[0077] The second connecting portion includes a second connecting body 602 , and the second connecting body 602 is detachably connected to the second screw rod 502 .

[0078] The first connection part includes a first connection body 601, which is detachably connected to the first screw rod 501, and the second connection part includes a second connection body 602, which is detachably connected to the second screw rod 502. By replacing the first connection body 601 and / or the second connection body 602, the vibration reduction device can be applied to more scenarios, thereby improving the applicability of the vibration reduction device.

[0079] Preferably, Figure 1-3 , Figure 4 As shown, the first connection part includes a first adapter bridge 701, the first adapter bridge 701 is provided with a first groove 7011 facing away from the second connection part, the bottom of the first groove 7011 is provided with a first through hole, the first screw rod 501 is inserted into the first through hole, and the first screw rod 501 is provided with a first rod head 5013 at one end of the first screw rod 501 located in the first groove 7011; the first connector 601 is connected to the first groove 7011 via a threaded pair;

[0080] and / or,

[0081] The second connecting part includes a second adapter bridge 702, the second adapter bridge 702 is provided with a second groove 7021 facing away from the first connecting part, the bottom of the second groove 7021 is provided with a second through hole, the second screw rod 502 is inserted into the second through hole, and the second screw rod 502 is provided with a second rod head 5023 at one end of the second screw rod 502 located in the second groove 7021; the second connecting body 602 is connected to the second groove 7021 via a threaded pair.

[0082] The first connection part includes a first transfer bridge 701, the first transfer bridge 701 is provided with a first groove 7011 facing away from the second connection part, the bottom of the first groove 7011 is provided with a first through hole, the first screw rod 501 is inserted into the first through hole, and the end of the first screw rod 501 located in the first groove 7011 is provided with a first rod head 5013; the first connection body 601 is connected to the first groove 7011 through a threaded pair. The first connection body 601 is connected to the first screw rod 501 by providing the first transfer bridge 701, and the first connection body 601 will not be affected when the first connection body 601 is replaced. Similarly, the first connection body 601 will not be affected when the first screw rod 501 is rotated. This means that when the first screw rod 501 is rotated to adjust the preload force, the first connection body 601 does not need to be disconnected from the outside, thereby improving the adjustability of the vibration reduction device. The vibration reduction device has a pre-tightening force when passing through the first screw rod 501, so that the first connector 601 is always in contact with the first transfer bridge 701, thereby avoiding collision between the first connector 601 and the first transfer bridge 701 during operation of the outer drum 9, thereby reducing noise.

[0083] The second connection part includes a second transfer bridge 702, the second transfer bridge 702 is provided with a second groove 7021 facing away from the first connection part, the bottom of the second groove 7021 is provided with a second through hole, the second screw rod 502 is inserted into the second through hole, and the end of the second screw rod 502 located in the second groove 7021 is provided with a second rod head 5023; the second connection body 602 is connected to the second groove 7021 through a threaded pair. The second connection body 602 is connected to the second screw rod 502 by providing the second transfer bridge 702, and the second connection body 602 will not be affected when the second connection body 602 is replaced. Similarly, the second connection body 602 will not be affected when the second screw rod 502 is rotated, and the second connection body 602 does not need to be disconnected from the outside, thereby improving the adjustability of the vibration reduction device.

[0084] Preferably, Figure 3 As shown, a first bushing 801 is disposed in the first adapter bridge 701 , and the first bushing 801 is disposed between the first rod head 5013 and the inner wall surface of the first adapter bridge 701 ;

[0085] and / or,

[0086] A second bushing 802 is disposed in the second adapter bridge 702 . The second bushing 802 is disposed between the second rod head 5023 and the inner wall surface of the second adapter bridge 702 .

[0087] The first adapter bridge 701 is provided with a first bushing 801, which is provided between the first rod head 5013 and the inner wall surface of the first adapter bridge 701; the friction between the first bushing 801 and the first connector 601 is less than the friction between the first rod head 5013 and the first adapter bridge 701, and the first bushing 801 has a certain toughness; thus, when the first screw rod 501 rotates, the first rod head 5013 will not rub against the first adapter bridge 701, but will rub against the first bushing 801, thereby reducing the energy consumed when the first screw rod 501 rotates; since the first bushing 801 has a certain toughness, when the vibration reduction device is in the vibration reduction process, the first bushing 801 has a vibration reduction and energy absorption effect on the vibration of the first rod head 5013, and also reduces the friction noise and vibration noise. Thus, the vibration reduction performance of the vibration reduction device is improved. The technical effect of "a second bushing 802 is disposed in the second transfer bridge 702, and the second bushing 802 is disposed between the second rod head 5023 and the inner wall surface of the second transfer bridge 702" is consistent with the listing. Specifically, the first bushing 801 and the second bushing 802 can be made of graphene. The first bushing 801 and the first transfer bridge 701 have an interference fit.

[0088] The present invention also provides a washing machine, comprising a shell, an outer drum 9 and the vibration reduction device according to any one of claims 1 to 10, wherein the first connecting part is connected to the shell, the second connecting part is connected to the outer drum 9, and the spring is in a stretched state.

[0089] A plurality of vibration-damping devices are provided, and the elastic member 301 is in a stretched state, so that the vibration-damping device has a pre-tightening force, thereby enabling the outer drum 9 to return to its original position more quickly under the action of the vibration-damping device.

[0090] Furthermore, the end of the first connection portion used for connecting to the outer shell can be provided with a hook, and a connector such as a ball joint can also be provided; the end of the second connection portion used for connecting to the outer drum 9 can be provided with a hook, and a connector such as a ball joint can also be provided.

[0091] When the washing machine is assembled, the first screw 501 and the second screw 502 are used to pre-tighten the vibration reduction device so that the outer drum 9 is subjected to a balanced force. When the washing machine is not working, the outer drum 9 is subjected to a balanced tensile force in multiple directions due to the pre-tightening force adjustment. When the washing machine is working, the vibration reduction devices installed in different directions (such as Figure 4The first sleeve 1 and the second sleeve 2 are connected to each other and the outer drum 9 is connected to the outer drum 9. When the vibration damping device is subjected to tension, the spring 3 will be stretched, the first sleeve 1 and the second sleeve 2 will move away from each other and overcome the damping energy consumption. When the vibration damping device is compressed, the spring 3 will be compressed, the first sleeve 1 and the second sleeve 2 will move closer to each other and overcome the damping energy consumption. When the vibration damping device changes from a tensioned state to a free state, the spring 3 will contract to restore the first sleeve 1 and the second sleeve 2 to their original positions. Similarly, when the vibration damping device changes from a compressed state to a free state, the spring 3 will be stretched to restore the first sleeve 1 and the second sleeve 2 to their original positions. Since the vibration damping device has a preload when the washing machine is static, when the outer drum 9 vibrates, the existence of the preload will always cause the outer drum 9 to quickly return to its original position, thereby improving the vibration damping effect on the outer drum 9 and preventing the outer drum 9 from vibrating too much and colliding with other components.

[0092] Washing machines with different maximum laundry loads require different preloads, which need to be designed based on actual conditions and test data. It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0093] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A vibration reduction device, characterized in that: The vibration reduction device comprises a first connecting part and a second connecting part, wherein a damping part and a spring (3) are arranged in parallel between the first connecting part and the second connecting part; the damping part comprises a first sleeve (1) and a second sleeve (2) which are nested together and can approach or move away from each other, the first sleeve (1) is connected to the first connecting part, and the second sleeve (2) is connected to the second connecting part, a first fixing member (102) is arranged at one end of the first sleeve (1) close to the first connecting part, and the first fixing member (102) is provided with a first annular groove (1021), and the opening of the first annular groove (1021) faces the second connecting part; the spring (3) is sleeved outside the first sleeve (1) and the second sleeve (2), and the first end of the spring (3) is arranged in the first annular groove (1021), and the first annular groove (1021) is filled with an elastic member (301); A first threaded hole (101) is provided at one end of the first sleeve (1) facing the first connecting portion, the first connecting portion comprises a first screw rod (501), and the first screw rod (501) is threadedly connected to the first threaded hole (101); The first connecting portion comprises a first connecting body (601), and the first connecting body (601) is detachably connected to the first screw rod (501); The first connecting part comprises a first adapter bridge (701), the first adapter bridge (701) is provided with a first groove (7011) facing away from the second connecting part, the bottom of the first groove (7011) is provided with a first through hole, the first screw rod (501) is inserted into the first through hole, and the first screw rod (501) is provided with a first rod head (5013) at one end of the first screw rod (501) located in the first groove (7011); the first connecting body (601) is connected to the first groove (7011) via a threaded pair.

2. The vibration reduction device according to claim 1, characterized in that: A second fixing member (202) is provided at one end of the second sleeve (2) close to the second connecting portion, and the second fixing member (202) is provided with a second annular groove (2021), and the opening of the second annular groove (2021) faces the first connecting portion; the second end of the spring (3) is arranged in the second annular groove (2021), and the second annular groove (2021) is also filled with the elastic member (301).

3. The vibration reduction device according to claim 1, characterized in that: The first sleeve (1) is inserted into the second sleeve (2), and a damping layer (4) is provided between the outer wall surface of the first sleeve (1) and the inner wall surface of the second sleeve (2).

4. The vibration reduction device according to claim 1, characterized in that: A second threaded hole (201) is provided at one end of the second sleeve (2) facing the second connecting portion, and the second connecting portion comprises a second screw rod (502), and the second screw rod (502) is threadedly connected to the second threaded hole (201).

5. The vibration reduction device according to claim 4, characterized in that: The first screw rod (501) is connected to the first threaded hole (101) in a non-sealed manner; and / or, The second screw rod (502) is connected to the second threaded hole (201) in a non-sealed manner.

6. The vibration reduction device according to claim 2, characterized in that: The inner wall surface of the first annular groove (1021) is uneven, and / or the inner wall surface of the second annular groove (2021) is uneven.

7. The vibration reduction device according to claim 6, characterized in that: The inner wall surface or the outer wall surface of the first annular groove (1021) is provided with a first thread structure, the rotation direction of the spring (3) is the same as the rotation direction of the first thread structure, and a portion of the spring (3) is inserted between two adjacent thread teeth of the first thread structure; and / or, The inner wall surface or the outer wall surface of the second annular groove (2021) is provided with a second thread structure, the rotation direction of the spring (3) is the same as the rotation direction of the second thread structure, and a portion of the spring (3) is inserted between two adjacent thread teeth of the second thread structure.

8. The vibration reduction device according to claim 4, characterized in that: The second connecting portion includes a second connecting body (602), and the second connecting body (602) is detachably connected to the second screw rod (502).

9. The vibration reduction device according to claim 8, characterized in that: The second connecting part comprises a second adapter bridge (702), the second adapter bridge (702) is provided with a second groove (7021) facing away from the first connecting part, the bottom of the second groove (7021) is provided with a second through hole, the second screw rod (502) is inserted into the second through hole, and the end of the second screw rod (502) located in the second groove (7021) is provided with a second rod head (5023); the second connecting body (602) is connected to the second groove (7021) via a threaded pair.

10. The vibration reduction device according to claim 9, characterized in that: A first bushing (801) is disposed inside the first adapter bridge (701), and the first bushing (801) is disposed between the first rod head (5013) and the inner wall surface of the first adapter bridge (701); and / or, A second bushing (802) is arranged inside the second adapter bridge (702), and the second bushing (802) is arranged between the second rod head (5023) and the inner wall surface of the second adapter bridge (702).

11. A washing machine, characterized in that: It comprises an outer shell, an outer drum (9) and the vibration reduction device according to any one of claims 1 to 10, wherein the first connecting part is connected to the outer shell, the second connecting part is connected to the outer drum (9), and the spring (3) is in a stretched state.

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