A rotary damper

Abstract

The utility model discloses a rotary damper, it includes: damping connecting rod, damping connecting rod has square shaft part and waist round axle part, and the waist round axle part end is provided with outer thread, and is provided with the convex round handle part between square shaft part and waist round axle part, first rotation washer, first wear -resisting gasket, second rotation washer, second wear -resisting gasket, spring washer are in proper order and are set in the waist round axle part, and the thread cooperation waist round axle part of stop screw nut, and the spring washer between stop screw nut and spring washer sets up stop washer, the utility model discloses through the stop screw nut in end part spacing, and damping connecting rod rotation drives first rotation washer, first wear -resisting gasket, second rotation washer, second wear -resisting gasket, spring washer mutual extrusion and forms damping force, and the component is relatively simple, and the maintenance is convenient, and need not use spring, and the durability is higher.

Description

Technical Field

[0001] This utility model belongs to the field of dampers, specifically, it relates to a rotary damper. Background Technology

[0002] A damper is a device that provides resistance to motion and dissipates kinetic energy. It is widely used in the automotive industry. Currently, dampers are classified into two types: linear and rotary. Linear dampers provide resistance to linear motion. Rotary dampers provide resistance to rotating objects and are further divided into hydraulic and spring types. Hydraulic dampers are suitable for large environments with high requirements, while spring dampers have a simpler structure and are suitable for small mechanical power structures.

[0003] Currently, spring-type dampers generate damping through spring deformation. However, as the spring is used more times, its damping characteristics decrease, requiring adjustment of the preload to improve damping performance. Furthermore, they have a short lifespan and lack maintainability. Therefore, research is urgently needed to design dampers with high reliability, long lifespan, compact structure, small size, simple interface, and convenient maintenance. Utility Model Content

[0004] In view of this, the technical problem to be solved by this utility model is to provide a rotary damper that avoids the problems of traditional rotary dampers being spring structures with short lifespan and poor maintainability.

[0005] To solve the above-mentioned technical problems, this utility model discloses a rotary damper, which includes:

[0006] The damping link has a square shaft portion and an oblong shaft portion. The end of the oblong shaft portion is provided with an external thread, and a protruding round shank portion is provided between the square shaft portion and the oblong shaft portion.

[0007] The first rotating washer, the first wear-resistant washer, the second rotating washer, the second wear-resistant washer, and the spring washer are sequentially fitted onto the oval shaft.

[0008] The locking nut is threaded onto the cylindrical shaft, and a locking washer is fitted between the locking nut and the spring washer.

[0009] According to one embodiment of the present invention, the outer diameter of the rotating washer is larger than the outer diameter of the round shank.

[0010] According to one embodiment of the present invention, the aforementioned anti-loosening nut protrudes from the oval shaft portion.

[0011] According to one embodiment of the present invention, a nylon shell is fitted around the outer side of the second rotating washer to the anti-loosening nut.

[0012] Compared with the prior art, the present invention can achieve the following technical effects:

[0013] By limiting the end with a lock nut, the damping linkage rotates and drives the first rotating washer, the first wear-resistant washer, the second rotating washer, the second wear-resistant washer, and the spring washer to squeeze each other to form a damping force. The components are relatively simple, easy to maintain, and do not require the use of springs, making them more durable.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the above-mentioned technical effects at the same time. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0016] Figure 1 This is a perspective view of the rotary damper according to an embodiment of the present invention;

[0017] Figure 2 This is a partial diagram of the rotary damper according to an embodiment of the present invention.

[0018] Figure Labels

[0019] Damping connecting rod 10, square shaft part 11, oval shaft part 12, round handle part 13, first rotating washer 20, first wear-resistant washer 30, second rotating washer 40, second wear-resistant washer 50, spring washer 60, anti-loosening nut 70, anti-loosening washer 80. Detailed Implementation

[0020] The following will describe in detail the implementation of this utility model with reference to the accompanying drawings and embodiments, so that the implementation of this utility model can be fully understood and carried out based on how technical means are used to solve technical problems and achieve technical effects.

[0021] Please refer to Figures 1 to 2 , Figure 1 This is a perspective view of the rotary damper according to an embodiment of the present invention; Figure 2 This is a partial diagram of the rotary damper according to an embodiment of the present invention.

[0022] As shown in the figure, a rotary damper includes: a damping link 10, which has a square shaft portion 11 and an oblong shaft portion 12. The oblong shaft portion 12 has an external thread at its end, and a protruding round shank portion 13 is provided between the square shaft portion 11 and the oblong shaft portion 12; a first rotating washer 20, a first wear-resistant washer 30, a second rotating washer 40, a second wear-resistant washer 50, and a spring washer 60 are sequentially sleeved on the oblong shaft portion 12; and a lock-out nut 70 is threadedly engaged with the oblong shaft portion 12, with a lock-out washer 80 sleeved between the lock-out nut 70 and the spring washer 60.

[0023] In one embodiment of this utility model, the damping connecting rod 10 is connected to the mechanical shaft to be rotated, the square shaft part 11 is connected, the middle round shank part 13 is limited, and the rear end of the oval shaft part 12 is oval to reduce the contact area on both sides and reduce friction. At the same time, the tail end is provided with an external thread to cooperate with the anti-loosening nut 70 and limit the wear-resistant damping component in the middle.

[0024] The wear-resistant damping components include, in sequence, a first rotating washer 20, a first wear-resistant washer 30, a second rotating washer 40, a second wear-resistant washer 50, and a spring washer 60. The rotating washer and the wear-resistant washer work together to enhance wear resistance during rotation, while the final spring washer 60 provides appropriate elasticity and facilitates thread adjustment of the lock nut 70.

[0025] Preferably, the outer diameters of the first rotating washer 20 and the second rotating washer 40 are larger than the outer diameter of the round shank portion 13, forming an external limit. Further, a nylon shell is fitted around the outer side of the second rotating washer 40 to the anti-loosening nut 70 to achieve external protection and at the same time provide a damping effect for rotation.

[0026] In addition, the anti-loosening nut 70 protrudes from the oval shaft portion 12, ensuring stable assembly and preventing the damping connecting rod 10 from extending and affecting rotation.

[0027] In summary, this utility model uses a locking nut to limit the end, and the rotation of the damping linkage drives the first rotating washer, the first wear-resistant washer, the second rotating washer, the second wear-resistant washer, and the spring washer to squeeze each other to form a damping force. The components are relatively simple, easy to maintain, and do not require the use of springs, thus having higher durability.

[0028] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A rotating damper, characterized in that, include: A damping link having a square shaft portion and an oblong shaft portion, wherein the end of the oblong shaft portion is provided with an external thread, and a protruding round shank portion is provided between the square shaft portion and the oblong shaft portion; A first rotating washer, a first wear-resistant washer, a second rotating washer, a second wear-resistant washer, and a spring washer are sequentially fitted onto the oval shaft portion. The anti-loosening nut of the oval shaft is threaded together, and an anti-loosening washer is sleeved between the anti-loosening nut and the spring washer.

2. The rotary damper according to claim 1, characterized in that, The outer diameters of both the first and second rotating washers are larger than the outer diameter of the round shank.

3. The rotary damper according to claim 1, characterized in that, The anti-loosening nut protrudes from the oval shaft portion.

4. The rotary damper according to claim 1, characterized in that, A nylon shell is fitted around the outer side of the second rotating washer to the anti-loosening nut.

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