Bidirectional shock absorber

Abstract

The invention discloses a two-way shock absorber, and relates to the technical field of shock absorption instruments, the two-way shock absorber comprises a shell, and a first cavity and a second cavity are formed in the shell; the damping structure comprises a first connecting piece arranged in the first cavity in a sliding mode, a part of the first connecting piece is exposed out of the shell, the first connecting piece has the trend of moving towards the outside of the shell, and the first connecting piece can rebound; the damping component comprises a second connecting piece and a third connecting piece, the second connecting piece enters the first cavity to be connected with the first connecting piece, the third connecting piece is arranged in the second cavity in a sliding mode, a part of the third connecting piece is exposed out of the shell, and a damping structure is arranged between the second connecting piece and the third connecting piece. The third connecting piece tends to move towards the first connecting piece. According to the bidirectional shock absorption structure, effective shock absorption can be achieved, meanwhile, key parts of the shock absorption structure and the damping structure are protected against impact of lateral force through the shell, and the reset precision of the shock absorption structure and the damping component can also be effectively guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of shock absorbing equipment, and in particular to a bidirectional shock absorber. Background Art

[0002] Normally, coil spring shock absorbers only need to consider their vertical vibration and vibration isolation efficiency without considering the reset accuracy and lateral impact after vibration and impact. That is to say, devices using conventional coil spring shock absorbers are usually elastic in the vertical direction and rigid in the lateral direction. However, some military vehicles or ships carrying high-precision optoelectronic equipment must consider the lateral impact caused by the explosion and the lateral force generated by the roll and pitch of the ship. While ensuring the shock absorption effect, the reset accuracy of the platform after vibration and impact must also be considered. Conventional shock absorbers cannot meet the use requirements. Summary of the invention

[0003] The present application aims to solve one of the above technical problems in the prior art. To this end, the present application embodiment provides a bidirectional shock absorber.

[0004] According to an embodiment of the present application, a bidirectional shock absorber is provided, comprising a shell, in which a first cavity and a second cavity are arranged; a shock absorbing structure, wherein the shock absorbing structure comprises a first connecting member slidably arranged in the first cavity, a portion of the first connecting member is exposed outside the shell, the first connecting member has a tendency to move toward the outside of the shell, and the first connecting member can rebound; a damping component, comprising a second connecting member and a third connecting member, the second connecting member enters the first cavity and connects to the first connecting member, the third connecting member is slidably arranged in the second cavity, a portion of the third connecting member is exposed outside the shell, a damping structure is arranged between the second connecting member and the third connecting member, the third connecting member has a tendency to move toward the first connecting member, and the movement direction of the third connecting member is colinear with the movement direction of the first connecting member.

[0005] The above-mentioned two-way shock absorber has at least the following beneficial effects: when the two-way shock absorber of the present application is used, the first connecting member is connected to an external device or device that needs shock absorption, and the third connecting member is used to connect to a fixed structure or a device that needs shock absorption. When vibration or impact occurs and compresses the first connecting member back into the shell, the first connecting member simultaneously drives the second connecting member to press against the damping structure, and the damping structure and the trend force acting on the first connecting member generate a reaction force to reduce the force of compressing the first connecting member; when the first connecting member is stretched by vibration or impact, due to the limitation of the shell, the first connecting member cannot be displaced, so the first connecting member drives the shell to move together, and at this time most of the third connecting member is stretched outside the shell, and the stretching force simultaneously acts on the damping structure, and the damping structure and the trend force acting on the third connecting member generate a reaction force to offset the force of stretching the first connecting member, thereby achieving effective shock absorption regardless of stretching or compressing the two-way shock absorbing structure of the present application, and consuming the energy brought by the vibration or impact through the damping structure, effectively reducing the adverse effects of the vibration. When the vibration or impact disappears, under the action of the trend force, the first connecting member and the second connecting member can return to their original positions. Under the rigidity limitation of the shell, the reset accuracy of the bidirectional shock absorber of the present application is guaranteed.

[0006] According to the bidirectional shock absorber described in the embodiment of the present application, the third connecting member is a cylinder, a first piston member is arranged in the cylinder, a portion of the second connecting member enters the cylinder to connect with the first piston member, and the cylinder is filled with hydraulic oil to form the damping structure.

[0007] According to the bidirectional shock absorber described in the embodiment of the present application, the shell includes a partition and two detachable end covers, the two end covers respectively block the openings at both ends of the shell to form an enclosed space, the partition is arranged in the shell to divide the enclosed space into the first cavity and the second cavity, and part of the third connecting member abuts against the partition.

[0008] According to the bidirectional shock absorber described in the embodiment of the present application, the damping component also includes a first rebound member, a second piston member adapted to the second cavity is arranged on the third connecting member, the third connecting member passes through the partition member, and the second piston member abuts against the partition member under the action of the first rebound member.

[0009] According to the bidirectional shock absorber described in the embodiment of the present application, the first rebound member is a coil spring.

[0010] According to the bidirectional shock absorber described in the embodiment of the present application, a first slip ring for the third connecting member to pass through is provided on the separator, and a second slip ring is provided on the second piston.

[0011] According to the bidirectional shock absorber described in the embodiment of the present application, the end cover is provided with a first guide hole for the third connecting member to pass through, a third slip ring is arranged in the first guide hole, and the first slip ring, the second slip ring and the third slip ring are coaxially arranged.

[0012] According to the bidirectional shock absorber described in the embodiment of the present application, the shock absorbing structure also includes a third piston member, the third piston member is fixed to the first connecting member, the third piston member is adapted to the first cavity, and the end of the shell has a second guide hole for the first connecting member to pass through.

[0013] According to the bidirectional shock absorber described in the embodiment of the present application, the shock absorbing structure also includes a second rebound member, which is arranged in the first cavity, and the second rebound member pushes against the third piston member so that the third piston member abuts against the end of the first cavity.

[0014] According to the bidirectional shock absorber described in the embodiment of the present application, the second rebound member is a coil spring.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present application is further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 is a schematic structural diagram of a bidirectional shock absorber according to an embodiment of the present application;

[0018] Figure 2 yes Figure 1 The cross-sectional view along the AA direction;

[0019] Figure 3 is a structural schematic diagram of a housing in an embodiment of the present application;

[0020] Figure 4 It is a schematic structural diagram of the damping component in an embodiment of the present application.

[0021] Reference numerals:

[0022] Shell 110, partition 111, end cover 120;

[0023] The shock absorbing structure 200, the first connecting member 210, the fourth sliding ring 211, the third piston member 220, the fifth sliding ring 221, and the second rebound member 230;

[0024] The damping member 300 , the second connecting member 310 , the third connecting member 320 , the second piston member 321 , the second sliding ring 3211 , the third sliding ring 322 , the first piston member 330 , and the first rebound member 340 . DETAILED DESCRIPTION

[0025] This section will describe in detail the specific embodiments of the present application. The preferred embodiments of the present application are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present application, but it cannot be understood as a limitation on the scope of protection of the present application.

[0026] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present application.

[0027] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0029] Reference Figure 1 and Figure 2 The bidirectional shock absorber of the embodiment of the present application includes a housing 110 , a shock absorbing structure 200 and a damping member 300 .

[0030] Among them, most of the shock-absorbing structure 200 and most of the damping component 300 are arranged in the shell 110. When vibration or impact occurs, the shell 110 can protect the key parts of the shock-absorbing structure 200 and the damping structure from the impact of lateral force, and can also effectively ensure the reset accuracy of the shock-absorbing structure 200 and the damping component 300.

[0031] Specifically, Figure 2 and Figure 3 As shown, a first cavity and a second cavity are arranged in the shell 110, the main components of the shock absorbing structure 200 are arranged in the first cavity, and the main components of the damping component 300 are arranged in the second cavity. The damping component 300 is also connected to the shock absorbing structure 200 to realize linked shock absorption and energy consumption, thereby effectively improving the shock absorption effect.

[0032] Among them, the shock-absorbing structure 200 includes a first connecting member 210 slidably arranged in the first cavity, a portion of the first connecting member 210 is exposed outside the shell 110, the first connecting member 210 has a tendency to move toward the outside of the shell 110, the first connecting member 210 can rebound, and the first connecting member 210 is used to connect to the equipment or components that need shock absorption.

[0033] Among them, the damping component 300 includes a second connecting member 310 and a third connecting member 320. The second connecting member 310 enters the first cavity and connects to the first connecting member 210, so that the damping component 300 can be linked with the shock absorbing structure 200; the third connecting member 320 is slidably arranged in the second cavity, and part of the third connecting member 320 is exposed outside the shell 110. A damping structure is arranged between the second connecting member 310 and the third connecting member 320. The damping structure is used to consume the energy generated by vibration or impact. At the same time, the third connecting member 320 has a tendency to move toward the first connecting member 210, and the movement direction of the third connecting member 320 is collinear with the movement direction of the first connecting member 210.

[0034] It should be noted that the direction in which the first connecting member 210 extends out of the housing 110 is opposite to the direction in which the third connecting member 320 extends out of the housing 110 .

[0035] When the bidirectional shock absorber of the present application is in use, the first connecting member 210 is connected to an external device or component that requires shock absorption, and the third connecting member 320 is used to connect to a fixed structure or a device that requires shock absorption. When vibration or impact occurs and compresses the first connecting member 210 back into the shell 110, the first connecting member 210 simultaneously drives the second connecting member 310 to press against the damping structure, and the damping structure and the trend force acting on the first connecting member 210 generate a reaction force to reduce the force that compresses the first connecting member 210.

[0036] When the first connecting member 210 is stretched by vibration or impact, the first connecting member 210 cannot be displaced due to the limitation of the shell 110, so the first connecting member 210 drives the shell 110 to move together. Since the first connecting member 210 is connected to the second connecting member 310, and the second connecting member 310 is connected to the third connecting member 320 through the damping structure, when the shell 110 moves following the first connecting member 210, the third connecting member 320 moves in a direction away from the first connecting member 210, and most of the third connecting member 320 is stretched outside the shell 110. Since the stretching force acts on the damping structure at the same time, the damping structure and the trend force acting on the third connecting member 320 generate a reaction force to offset the force of stretching the first connecting member 210, thereby achieving effective shock absorption regardless of stretching or compression of the bidirectional shock absorbing structure 200 of the present application, and consuming the energy caused by vibration or impact through the damping structure, thereby effectively reducing the adverse effects caused by vibration.

[0037] When the vibration or impact disappears, under the action of the trend force, the first connecting member 210 and the second connecting member 310 can return to their original positions. Under the rigidity limitation of the shell 110, the reset accuracy of the bidirectional shock absorber of the present application is guaranteed.

[0038] In the embodiment of the present application, the second connecting member 310 is connected to the first connecting member 210 by means of threads.

[0039] In some embodiments, the third connecting member 320 is a cylinder, a first piston member 330 is arranged in the cylinder, a portion of the second connecting member 310 enters the cylinder to connect to the first piston member 330, the cylinder is filled with hydraulic oil, and the cylinder, the first piston, and the hydraulic oil cooperate to form a damping structure.

[0040] The second connecting member 310 is slidably connected to the third connecting member 320 through the first piston member 330, and energy consumption is achieved through the cooperation between the hydraulic oil arranged in the third connecting member 320 and the second piston member 321, thereby effectively reducing the vibration impact caused by vibration or impact, so that the equipment connected to the present application can stabilize faster.

[0041] In the present application embodiment, Figure 4 As shown, the damping member 300 is a hydraulic damper.

[0042] In some embodiments, the second connecting member 310 may be a cylinder, in which the first piston member 330 is arranged, and part of the third connecting member 320 enters the cylinder to connect to the first piston member 330, and the cylinder is filled with hydraulic oil. The cylinder, the first piston, and the hydraulic oil cooperate to form a damping structure.

[0043] In some embodiments, such as Figure 3 As shown, the shell 110 includes a partition 111 and two detachable end covers 120. The two end covers 120 respectively block the openings at both ends of the shell 110 to form an enclosed space. The partition 111 is arranged in the shell 110 to divide the enclosed space into a first cavity and a second cavity. Part of the third connecting member 320 abuts against the partition 111.

[0044] Specifically, the end cap 120 is connected to the shell 110 through threads, wherein the end cap 120 has an internal thread, and an external thread is arranged on the outer side of the end of the shell 110. The end cap 120 is arranged to be detachable, so that the maintenance and assembly of the bidirectional shock absorber of the present application are more convenient.

[0045] The shell 110 is cylindrical, and the partition 111 is a boss structure formed inside the shell 110. The partition 111 divides the enclosed space into a first cavity and a second cavity for the shock absorbing structure 200 and the damping component 300 to move, so that the movements of the two do not interfere with each other and can be linked.

[0046] In some embodiments, the damping component 300 also includes a first rebound component 340, and a second piston component 321 adapted to the second cavity is arranged on the third connecting component 320. The third connecting component 320 is penetrated through the partition 111, and the second piston component 321 abuts against the partition 111 under the action of the first rebound component 340. The partition 111 plays a limiting role on the one hand, and a guiding role on the other hand. The setting of the end cover 120 and the partition 111 further limits the range of movement of the third connecting component 320.

[0047] In some embodiments, a portion of the third connecting member 320 is passed through the partition 111, and cooperates with the second piston member 321 to limit the position of the third connecting member 320, so that the third connecting member 320 can no longer move closer to the first connecting member 210. One end of the first rebound member 340 abuts against the second piston member 321, and the other end abuts against the second cavity, so that the elastic force provided by the first rebound member 340 drives the third connecting member 320 to move toward the first connecting member 210.

[0048] The first resilient member 340 is also the key to the automatic reset of the third connecting member 320. The first resilient member 340 is a coil spring, so that the bidirectional shock absorber of the present application can also provide a good shock absorption effect when the vibration or impact is small. When the first connecting member 210 is stretched, due to the existence of the end cover 120, the housing 110 moves with the first connecting member 210, the third connecting member 320 is stretched, and drives the second piston member 321 to compress the first resilient member 340.

[0049] In some specific embodiments, a first sliding ring for the third connecting member 320 to pass through is provided on the partition 111, and a second sliding ring 3211 is provided on the second piston. The provision of the first sliding ring and the second sliding ring 3211 can make the sliding of the third connecting member 320 smoother.

[0050] In the embodiment of the present application, the end cover 120 is provided with a first guide hole for the third connecting member 320 to pass through, and the third slip ring 322 is provided in the first guide hole. The first slip ring, the second slip ring 3211 and the third slip ring 322 are coaxially arranged, so that the sliding is smoother and the position accuracy of the third connecting member 320 after resetting is more accurate.

[0051] In some embodiments, the shock absorbing structure 200 further includes a third piston member 220, which is fixed to the first connecting member 210, and the third piston member 220 is adapted to the first cavity, and the end of the housing 110 has a second guide hole for the first connecting member 210 to pass through. In order to make the sliding of the first connecting member 210 smoother, a fourth sliding ring 211 for the first connecting member 210 to pass through is arranged in the second guide hole, and a fifth sliding ring 221 is arranged on the second piston member 321. Through the cooperation of the fourth sliding ring 211 and the fifth sliding ring 221, the first connecting member 210 is coaxial at all places.

[0052] In some embodiments, the shock absorbing structure 200 further includes a second resilient member 230 , which is disposed in the first cavity. The second resilient member 230 pushes against the third piston member 220 so that the third piston member 220 abuts against the end of the first cavity.

[0053] In some specific embodiments, one end of the second resilient member 230 abuts against the partition 111 , and the other end of the second resilient member 230 pushes the third piston member 220 against the end cover 120 , so that the elastic force provided by the second resilient member 230 drives the first connecting member 210 toward extending out of the shell 110 .

[0054] At the same time, the second resilient member 230 is also the key to the automatic reset of the first connecting member 210. The second resilient member 230 is a coil spring, so that the bidirectional shock absorber of the present application can also provide a good shock absorption effect when the vibration or impact is small. When the first connecting member 210 is compressed, the third piston member 220 moves with the first connecting member 210, and the second resilient member 230 is compressed.

[0055] Specifically, the working principle of this application is:

[0056] When vibration or impact occurs and compresses the first connecting member 210 back into the shell 110, the first connecting member 210 simultaneously drives the second connecting member 310 and the third piston member 220. The third piston member 220 compresses the second rebound member 230. The second connecting member 310 drives the first piston member 330 to move in the hydraulic oil in the third connecting member 320. The reaction force generated by the second rebound member 230 and the hydraulic oil reduces the force that compresses the first connecting member 210.

[0057] When the first connecting member 210 is stretched by vibration or impact, the first connecting member 210 cannot be displaced due to the limitation of the shell 110, so the first connecting member 210 drives the shell 110 to move together. Since the first connecting member 210 is connected to the second connecting member 310, and the second connecting member 310 is connected to the third connecting member 320 through a piston structure, when the shell 110 moves with the first connecting member 210, the third connecting member 320 moves in a direction away from the first connecting member 210 and compresses the first rebound member 340. Most of the third connecting member 320 is stretched outside the shell 110. Since the stretching force acts on the hydraulic oil through the piston, the reaction force generated by the hydraulic oil and the second rebound member 230 offsets the force of stretching the first connecting member 210, thereby achieving effective shock absorption regardless of stretching or compression of the bidirectional shock absorbing structure 200 of the present application, and consumes the energy caused by vibration or impact through the damping structure, effectively reducing the adverse effects of vibration.

[0058] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A bidirectional shock absorber, characterized in that: include A shell, wherein a first cavity and a second cavity are arranged in the shell; A shock absorbing structure, the shock absorbing structure comprising a first connecting member slidably disposed in the first cavity, a portion of the first connecting member being exposed outside the shell, the first connecting member having a tendency to move toward the outside of the shell, and the first connecting member being able to rebound; The damping component includes a second connecting member and a third connecting member, wherein the second connecting member enters into the first cavity to connect to the first connecting member, the third connecting member is slidably arranged in the second cavity, and a portion of the third connecting member is exposed outside the shell, a damping structure is arranged between the second connecting member and the third connecting member, the third connecting member has a tendency to move toward the first connecting member, and the movement direction of the third connecting member is colinear with the movement direction of the first connecting member.

2. The bidirectional shock absorber according to claim 1, characterized in that: The third connecting member is a cylinder, a first piston member is arranged in the cylinder, a portion of the second connecting member enters the cylinder to connect with the first piston member, and the cylinder is filled with hydraulic oil to form the damping structure.

3. The bidirectional shock absorber according to claim 2, characterized in that: The shell includes a partition and two detachable end covers, the two end covers respectively block the openings at both ends of the shell to form an enclosed space, the partition is arranged in the shell to divide the enclosed space into the first cavity and the second cavity, and part of the third connecting member abuts against the partition.

4. The bidirectional shock absorber according to claim 3, characterized in that: The damping component further includes a first resilient member, a second piston member adapted to the second cavity is arranged on the third connecting member, the third connecting member penetrates the partition member, and the second piston member abuts against the partition member under the action of the first resilient member.

5. The bidirectional shock absorber according to claim 4, characterized in that: The first resilient member is a coil spring.

6. The bidirectional shock absorber according to claim 4, characterized in that: The separator is provided with a first sliding ring for the third connecting member to pass through, and the second piston is provided with a second sliding ring.

7. The bidirectional shock absorber according to claim 6, characterized in that: The end cover is provided with a first guide hole for the third connecting member to pass through, a third slip ring is arranged in the first guide hole, and the first slip ring, the second slip ring and the third slip ring are coaxially arranged.

8. The bidirectional shock absorber according to claim 1, characterized in that: The shock absorbing structure further comprises a third piston member, the third piston member is fixed to the first connecting member, the third piston member is adapted to the first cavity, and the end of the shell has a second guide hole for the first connecting member to pass through.

9. The bidirectional shock absorber according to claim 8, characterized in that: The shock absorbing structure further includes a second resilient member, which is disposed in the first cavity and pushes against the third piston member so that the third piston member abuts against an end of the first cavity.

10. The bidirectional shock absorber according to claim 9, characterized in that: The second resilient member is a coil spring.

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