Piston type liquid damper
By introducing a powerful balance spring, an annular corrugated design on the inner wall of the cylinder, and heat dissipation fins into the piston-type liquid damper, the problem of damage caused by excessive instantaneous pressure is solved, achieving effective pressure relief and heat dissipation, and extending the service life of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-23
- Publication Date
- 2026-04-07
AI Technical Summary
Existing piston-type liquid dampers are prone to damage when subjected to large instantaneous pressure, lack an effective pressure relief and balance structure, and have poor heat dissipation, resulting in a shortened device lifespan.
The pressure relief piston is supported by a strong balance spring. Combined with the annular corrugated design on the inner wall of the cylinder and heat dissipation fins, it can relieve instantaneous pressure and enhance heat dissipation. The device structure is protected by the cooperation of the protrusion and the pressure relief piston, and is further protected by the limit ring and elastic dust cover.
The structure of the effective pressure relief protection device enhances heat dissipation and extends the service life of the device.
Smart Images
Figure CN224093731U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to damper technical field more specifically, relate to a piston type liquid damper. BACKGROUND
[0002] The working principle of the piston type liquid damper is mainly based on the energy dissipation mechanism generated by liquid flow, which is composed of a sealed cylinder, a piston, a damping medium (such as silicone oil or castor oil) and connecting components. The piston separates the cylinder into two chambers. When external vibration forces the piston to move, the damping medium flows between the chambers through the piston hole or gap, generating viscous friction resistance and achieving damping effect.
[0003] However, the current piston type liquid damper may cause deformation and damage to the connecting part when the instantaneous pressure is too large, even burst, resulting in damage to the damper, lack of effective pressure relief balance structure, and the shell is generally set as a flat cylindrical surface, which is not conducive to heat dissipation after conversion. UTILITY MODEL CONTENT
[0004] In view of the problems existing in the prior art, the utility model aims to provide a piston type liquid damper, which has the advantages of pressure relief, protection device structure, enhanced heat dissipation and improved product service life, solving the above background technical problems.
[0005] To achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A piston type liquid damper includes a cylinder, a piston, a first connecting ring and a pressure relief part. The piston is movably installed inside the cylinder. The first connecting ring is fixedly installed at the right end of the cylinder. The pressure relief part is installed inside the cylinder and connected with the piston.
[0007] The piston includes a piston rod, a movable piston block and a fixed piston block. One end of the piston rod penetrates and seals the inside of the cylinder. The movable piston block is fixedly installed on the outside of the piston rod. The outside of the movable piston block is in sliding cooperation with the inner wall of the cylinder, and the movable piston block is provided with through holes distributed in a ring shape. The fixed piston block is fixedly installed inside the cylinder. One end of the piston rod inside the cylinder penetrates and seals slidingly connects to the other side of the fixed piston block. Silicone oil is injected between the left side of the fixed piston block and the cylinder.
[0008] The pressure relief member comprises a pressure relief piston, two protrusions and a strong balance spring, the outer side of the pressure relief piston is sealed and slides into the inside of the cylinder body, one side of each of the two protrusions is fixedly installed to the side of the pressure relief piston facing the fixed piston block, the other side of the protrusion penetrates and slides to the left side of the fixed piston block, the end of the piston rod penetrates and is sealed and slides to one side of the pressure relief piston and extends to the inside of the strong balance spring, one end of the strong balance spring is fixedly installed to the inside of the cylinder body, and the other end of the strong balance spring is fixedly connected with the pressure relief piston.
[0009] As a further description of the above technical scheme, the inner wall of the cylinder body is annular corrugated in a side view cross section, and the outer side of the movable piston block is matched with the curve of the inner wall of the cylinder body.
[0010] As a further description of the above technical scheme, the outer side of the cylinder body is provided with annular distributed heat dissipation fins, and the heat dissipation fins are arranged in axial parallel with the cylinder body.
[0011] As a further description of the above technical scheme, the inside of the cylinder body is fixedly installed with a limiting ring, and the limiting ring is located at the side of the pressure relief piston away from the fixed piston block.
[0012] As a further description of the above technical scheme, the end of the piston rod extending to the outside of the cylinder body is fixedly installed with a second connecting ring.
[0013] As a further description of the above technical scheme, the left end of the cylinder body is fixedly installed with an elastic dustproof sleeve, and the other end of the elastic dustproof sleeve is sleeved to the outside of the second connecting ring.
[0014] Compared with the prior art, the utility model has the advantages that:
[0015] The utility model discloses a pressure relief device, which comprises a cylinder body, a movable piston block, a fixed piston block, a pressure relief piston, two protrusions and a strong balance spring. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;
[0017] Figure 2 It is a front view cross section structure schematic diagram of the utility model;
[0018] Figure 3 It is Figure 2 It is an enlarged schematic diagram of A part structure;
[0019] Figure 4The side view sectional structure schematic diagram of the utility model.
[0020] Mark explanation in the drawing:
[0021] 1, cylinder; 2, piston piece; 21, piston rod; 211, second connecting ring; 22, movable piston block; 23, fixed piston block; 24, through hole; 3, first connecting ring; 4, pressure relief piece; 41, pressure relief piston; 42, protruding block; 43, strong balance spring; 5, limiting ring; 6, heat dissipation fin; 7, elastic dust cover. DETAILED DESCRIPTION
[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model;
[0023] Please refer to Figures 1 to 4 In the utility model, a piston type liquid damper includes a cylinder 1, a piston piece 2, a first connecting ring 3 and a pressure relief piece 4, the piston piece 2 is movably installed to the inside of the cylinder 1, the first connecting ring 3 is fixedly installed to the right end of the cylinder 1, and the pressure relief piece 4 is installed to the inside of the cylinder 1 and connected and matched with the piston piece 2; the piston piece 2 includes a piston rod 21, a movable piston block 22 and a fixed piston block 23, one end of the piston rod 21 penetrates and is sealingly slid to the inside of the cylinder 1, the inside of the movable piston block 22 is fixedly installed to the outside of the piston rod 21, the outside of the movable piston block 22 is slidingly matched with the inner wall of the cylinder 1, and the movable piston block 22 is provided with annularly distributed through holes 24, the fixed piston block 23 is fixedly installed to the inside of the cylinder 1, one end of the piston rod 21 located in the inside of the cylinder 1 penetrates and is sealingly slid to the other side of the fixed piston block 23, and silicon oil liquid is injected between the left side of the fixed piston block 23 and the cylinder 1.
[0024] The pressure relief piece 4 includes a pressure relief piston 41, two protruding blocks 42 and a strong balance spring 43, the outside of the pressure relief piston 41 is sealingly slid to the inside of the cylinder 1, one side of each of the two protruding blocks 42 is fixedly installed to the side of the pressure relief piston 41 facing the fixed piston block 23, the other side of the protruding block 42 penetrates and slides to the left side of the fixed piston block 23, the end of the piston rod 21 penetrates and is sealingly slid to one side of the pressure relief piston 41 and extends to the inside of the strong balance spring 43, one end of the strong balance spring 43 is fixedly installed to the inside of the cylinder 1, and the other end of the strong balance spring 43 is fixedly connected with the pressure relief piston 41.
[0025] The utility model discloses a damping device, including cylinder body 1, piston rod 21, movable piston block 22, fixed piston block 23, protruding block 42, pressure relief piston 41 and strong force balance spring 43, wherein: cylinder body 1 is internally provided with movable piston block 22, fixed piston block 23, protruding block 42, pressure relief piston 41 and strong force balance spring 43.
[0026] Please refer to Figure 4 Wherein: the inner wall side view section of cylinder body 1 is annular corrugated, and the outside of movable piston block 22 is fitted with the inner wall curve of cylinder body 1.
[0027] In the utility model, through the design of the inner wall of cylinder body 1 as annular corrugated, the contact area between silicon oil and cylinder body 1 is increased, the heat transfer efficiency of the converted heat is improved, the heat dissipation of the device is enhanced, and the equipment life is prolonged
[0028] Please refer to Figure 1 And Figure 2 Wherein: cylinder body 1 is provided with annular distributed heat dissipation fin 6 on the outside, and heat dissipation fin 6 is arranged in axial parallel with cylinder body 1.
[0029] In the utility model, through heat dissipation fin 6, the contact area between the outside of cylinder body 1 and external air is enhanced, the heat exchange efficiency is improved, and the heat dissipation efficiency is improved.
[0030] Please refer to Figure 3 Wherein: the inside of cylinder body 1 is fixedly installed with limiting ring 5, and limiting ring 5 is located at the side, away from fixed piston block 23, of pressure relief piston 41.
[0031] In the utility model, the displacement distance of pressure relief piston 41 is limited through limiting ring 5, so that the contact between protruding block 42 and fixed piston block 23 is kept and dislocation is avoided, and silicon oil leakage is avoided.
[0032] Please refer to Figure 1 And Figure 2The piston rod 21 extends to the outer side of the cylinder body 1 and is fixedly fitted with a second connecting ring 211.
[0033] In this invention, the second connecting ring 211 facilitates the connection between the piston rod 21 and the external support structure.
[0034] Please see Figure 1 and Figure 2 Figure 1 Figure 2 Figure 1 Figure 2 Among them, an elastic dust cover 7 is fixedly installed on the left end of the cylinder body 1, and the other end of the elastic dust cover 7 is sleeved to the outside of the second connecting ring 211.
[0035] In this invention, the part of the piston rod 21 that runs outside the cylinder body 1 is protected from dust by an elastic dust cover 7, thereby improving the lifespan of the device.
[0036] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.
Claims
1. A piston-type liquid damper, characterized in that: It includes a cylinder body (1), a piston (2), a first connecting ring (3), and a pressure relief component (4). The piston (2) is movably installed inside the cylinder body (1), the first connecting ring (3) is fixedly installed to the right end of the cylinder body (1), and the pressure relief component (4) is installed inside the cylinder body (1) and connected to the piston (2). The piston component (2) includes a piston rod (21), a moving piston block (22), and a fixed piston block (23). One end of the piston rod (21) passes through and is sealed to slide into the interior of the cylinder (1). The interior of the moving piston block (22) is fixedly installed to the outside of the piston rod (21). The outside of the moving piston block (22) slides with the inner wall of the cylinder (1). The moving piston block (22) is provided with annularly distributed through holes (24). The fixed piston block (23) is fixedly installed into the interior of the cylinder (1). One end of the piston rod (21) located inside the cylinder (1) passes through and is sealed to slide to the other side of the fixed piston block (23). Silicone oil is injected between the left side of the fixed piston block (23) and the cylinder (1). The pressure relief component (4) includes a pressure relief piston (41), two protrusions (42) and a strong balance spring (43). The outer side of the pressure relief piston (41) is sealed and slid into the inside of the cylinder (1). One side of each of the two protrusions (42) is fixedly installed on the side of the pressure relief piston (41) facing the fixed piston block (23). The other side of the protrusions (42) passes through and slides to the left side of the fixed piston block (23). The end of the piston rod (21) passes through and seals and slides to one side of the pressure relief piston (41) and extends into the inside of the strong balance spring (43). One end of the strong balance spring (43) is fixedly installed into the inside of the cylinder (1), and the other end of the strong balance spring (43) is fixedly connected to the pressure relief piston (41).
2. The piston-type liquid damper according to claim 1, characterized in that: The inner wall of the cylinder (1) has an annular corrugated cross section, and the outer side of the moving piston block (22) matches the inner wall curve of the cylinder (1).
3. A piston-type liquid damper according to claim 1, characterized in that: The cylinder (1) is provided with annularly distributed heat dissipation fins (6) on its outer side, and the heat dissipation fins (6) are arranged parallel to the cylinder (1) axially.
4. A piston-type liquid damper according to claim 1, characterized in that: A limiting ring (5) is fixedly installed inside the cylinder (1), and the limiting ring (5) is located on the side of the pressure relief piston (41) away from the fixed piston block (23).
5. A piston-type liquid damper according to claim 1, characterized in that: The piston rod (21) extends to one end outside the cylinder (1) and is fixedly fitted with a second connecting ring (211).
6. A piston-type liquid damper according to claim 5, characterized in that: An elastic dust cover (7) is fixedly installed on the left end of the cylinder (1), and the other end of the elastic dust cover (7) is sleeved to the outside of the second connecting ring (211).