Low-heat-conduction connecting structure of shock absorber aluminum cylinder and end cover

Abstract

The utility model discloses a low heat conduction connecting structure of shock absorber aluminum cylinder and end cover, include: cylinder, the outer wall of cylinder top is provided with the cover body, the utility model relates to shock absorber aluminum cylinder end cover technical field, this cylinder and cover body, through the collaborative heat dissipation design of "heat dissipation groove + air net", the heat of accumulation inside cylinder is actively dredged, indirectly auxiliary low heat conduction effect is guaranteed, and the annular array heat dissipation groove of cylinder top can make the heat dissipation area improve compared with the smooth outer wall, and the natural convection diffusion of cylinder wall heat to air is accelerated, avoid the temperature of damping oil because of the continuous heat absorption and lead to too high, through the fixed design of "annular array screw + fixed ring plate + connecting ring plate", the connecting stability and the heat deformation adaptability are given full play to, and the screw is along the axial annular array distribution, and the fastening force is evenly acted on the circumference of "fixed ring plate - connecting ring plate", avoid the partial force too big and lead to "cylinder - cover body" cooperation deviation.

Description

Technical Field

[0001] This utility model relates to the technical field of shock absorber aluminum cylinder end caps, specifically a low thermal conductivity connection structure between the shock absorber aluminum cylinder and the end cap. Background Technology

[0002] During the operation of vehicles and various mechanical equipment, shock absorbers, as key components, bear the important responsibility of buffering vibrations and improving driving comfort. In the working system of shock absorbers, the connection structure design between the aluminum cylinder and the end cap plays a decisive role in the overall performance of the shock absorber.

[0003] From a heat dissipation perspective, when traditional shock absorbers are in operation, the piston rod and damping oil move frequently and at high speeds relative to each other, converting a large amount of mechanical energy into heat energy. This causes the temperature inside the aluminum cylinder to rise sharply. If the excessively high temperature cannot be dissipated in a timely and efficient manner, the viscosity of the damping oil will decrease, and the damping force will weaken accordingly, greatly reducing the shock absorber's buffering and damping performance. Although some traditional shock absorbers attempt to install simple heat sinks on the outer wall of the aluminum cylinder or use materials with slightly better thermal conductivity, the lack of a systematic and coordinated heat dissipation design results in extremely limited heat dissipation efficiency, making it difficult to fundamentally solve the problem of heat accumulation. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a low-thermal-conductivity connection structure between the aluminum cylinder and the end cap of a shock absorber. This solves the problem that in traditional shock absorbers, the piston rod and damping oil heat up during operation, and the heat dissipation efficiency is extremely limited even when simple heat sinks are installed on the outer wall of the aluminum cylinder.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A low thermal conductivity connection structure for an aluminum cylinder and end cap of a shock absorber includes: a cylinder body, a cap body provided on the outer wall of the top of the cylinder body; an installation ring fixedly connected to the outer wall of the bottom of the cylinder body; a heat dissipation groove provided on the outer wall of the top of the cylinder body; a sealing gasket fixedly connected to the inner wall of the top of the cylinder body; a fixing ring plate fixedly connected to the outer wall of the side of the cylinder body; and a screw slidably connected to the inner wall of the fixing ring plate.

[0009] Preferably, the heat dissipation grooves are arranged in a ring around the central point of the cylinder, and the screws are arranged in a ring around the central point of the mounting ring. When the damping oil inside the cylinder heats up, the heat is transferred to the heat dissipation grooves through the cylinder wall. The larger heat dissipation area can accelerate the natural convection diffusion of heat to the surrounding air and reduce the overall temperature of the cylinder.

[0010] Preferably, a ventilation mesh is fixedly connected to the inner wall of the side of the cover, a sliding hole is provided on the outer wall of the top of the cover, a connecting ring plate is fixedly connected to the outer wall of the side of the cover, a sealing ring is fixedly connected to the inner wall of the sliding hole, and a heat insulation plate is slidably connected to the inner wall of the cover.

[0011] Preferably, the ventilation mesh is arranged in a ring around the central point of the cover, the sealing rings are arranged vertically along the inner wall of the sliding hole, and the heat insulation board is made of glass fiber, which has low thermal conductivity and can effectively prevent heat transfer.

[0012] Preferably, the outer wall of the bottom of the heat insulation plate is in contact with the outer wall of the top of the cylinder, and the heat insulation plate is positioned above the heat dissipation groove. The outer wall of the bottom of the cover is in contact with the outer wall of the top of the sealing gasket, and the position of the vent mesh corresponds to the position of the side of the heat dissipation groove.

[0013] Preferably, the outer wall of the screw is slidably connected to the inner wall of the connecting ring plate, and the fixing ring plate is fixedly connected to the connecting ring plate by the screw. During assembly, the fixing ring plate on the cylinder side and the connecting ring plate on the cover side are tightly locked by the screw. The design of the ring array makes the tightening force of the screw evenly distributed on the connecting circumference, avoiding excessive local force that could cause the cylinder-cover to shift.

[0014] (III) Beneficial Effects

[0015] This utility model provides a low thermal conductivity connection structure between the aluminum cylinder and the end cap of a shock absorber. It has the following advantages:

[0016] (i) The cylinder body, through the coordinated heat dissipation design of "heat dissipation grooves + ventilation mesh", actively dissipates the heat accumulated inside the cylinder body, indirectly assists the low heat conduction effect, and at the same time ensures the stability of the damping oil performance. The annular array of heat dissipation grooves on the top of the cylinder body can increase the heat dissipation area compared with the flat outer wall, accelerate the natural convection diffusion of heat from the cylinder wall to the air, and avoid the damping oil from overheating due to continuous heat absorption. The ventilation mesh of the cover corresponds to the position of the heat dissipation grooves, which can guide the external airflow into the gap between the cover and the cylinder body, directly blow on the surface of the heat dissipation grooves, and at the same time exhaust the hot air in the gap, forming an efficient airflow circulation, further reducing the cylinder body temperature.

[0017] (ii) The cover body is fixed by a “ring array screw + fixed ring plate + connecting ring plate” design, which takes into account both connection stability and thermal deformation adaptability. The screws are distributed in a ring array along the axis, and the fastening force is evenly applied to the circumference of the “fixed ring plate-connecting ring plate” to avoid excessive local force causing the “cylinder-cover body” to shift. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial cross-sectional structural diagram of the present invention;

[0020] Figure 3 This utility model Figure 2 A schematic diagram of the structure at point A;

[0021] Figure 4 This is a schematic diagram of the structure of the cylindrical body of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the cover of this utility model.

[0023] In the diagram: 1. Cylinder body; 11. Mounting ring; 12. Heat dissipation groove; 13. Sealing gasket; 14. Fixing ring plate; 15. Screw; 2. Cover body; 21. Ventilation mesh; 211. Sliding hole; 22. Connecting ring plate; 23. Sealing ring; 24. Heat insulation plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 This utility model provides a technical solution: a low thermal conductivity connection structure for an aluminum cylinder and end cap of a shock absorber, comprising: a cylinder 1, a cap 2 provided on the outer wall of the top of the cylinder 1; an installation ring 11 fixedly connected to the outer wall of the bottom of the cylinder 1; a heat dissipation groove 12 provided on the outer wall of the top of the cylinder 1; a sealing gasket 13 fixedly connected to the inner wall of the top of the cylinder 1; a fixing ring plate 14 fixedly connected to the outer wall of the side of the cylinder 1; and a screw 15 slidably connected to the inner wall of the fixing ring plate 14.

[0026] The heat dissipation grooves 12 are arranged in a ring along the central point of the cylinder 1, and the screws 15 are arranged in a ring along the central point of the mounting ring 11. When the damping oil inside the cylinder 1 generates heat, the heat is transferred to the heat dissipation grooves 12 through the wall of the cylinder 1. The larger heat dissipation area can accelerate the natural convection diffusion of heat to the surrounding air and reduce the overall temperature of the cylinder 1.

[0027] A ventilation mesh 21 is fixedly connected to the inner wall of the side of the cover 2. A sliding hole 211 is opened on the outer wall of the top of the cover 2. A connecting ring plate 22 is fixedly connected to the outer wall of the side of the cover 2. A sealing ring 23 is fixedly connected to the inner wall of the sliding hole 211. A heat insulation plate 24 is slidably connected to the inner wall of the cover 2.

[0028] The ventilation mesh 21 is arranged in a ring along the central point of the cover body 2, the sealing ring 23 is arranged vertically along the inner wall of the sliding hole 211, and the heat insulation plate 24 is made of glass fiber, which has the characteristics of low thermal conductivity and can effectively prevent heat transfer.

[0029] The outer wall of the bottom of the heat insulation plate 24 is in contact with the outer wall of the top of the cylinder 1, and the heat insulation plate 24 is positioned above the heat dissipation groove 12. The outer wall of the bottom of the cover 2 is in contact with the outer wall of the top of the sealing gasket 13. The position of the ventilation net 21 corresponds to the position of the side of the heat dissipation groove 12.

[0030] The outer wall of the screw 15 is slidably connected to the inner wall of the connecting ring plate 22, and the fixing ring plate 14 is fixedly connected to the connecting ring plate 22 by the screw 15. During assembly, the fixing ring plate 14 on the side of the cylinder 1 and the connecting ring plate 22 on the side of the cover 2 are tightly locked by the screw 15. The design of the ring array makes the tightening force of the screw 15 evenly distributed on the connecting circumference, avoiding excessive local force that causes the "cylinder 1-cover 2" to misalign.

[0031] In use, the cylinder 1 is mounted on the running device via the mounting ring 11 at the bottom, and the cover 2 is mounted on the top of the cylinder 1 to provide a seal.

[0032] As a core structure with low thermal conductivity, the cooperation between the heat insulation plate 24 and the "cylinder 1-cover 2" weakens the heat transfer path from the root. The heat insulation plate 24 is made of glass fiber material with low thermal conductivity, which is much lower than that of aluminum. When the temperature of the cylinder 1 rises due to the working temperature of the shock absorber, the heat needs to be transferred to the heat insulation plate 24 through the top outer wall of the cylinder 1 first. The high thermal insulation of the glass fiber material will greatly reduce the heat penetration efficiency.

[0033] The heat dissipation grooves 12 on the outer wall of the top of the cylinder 1 are arranged in a ring along the axis of the cylinder 1, which greatly increases the heat dissipation area of ​​the top of the cylinder 1. Compared with the flat outer wall, the ring array of grooves can increase the heat dissipation area. When the damping oil inside the cylinder 1 heats up, the heat is transferred to the heat dissipation grooves 12 through the wall of the cylinder 1. The larger heat dissipation area can accelerate the natural convection diffusion of heat to the surrounding air and reduce the overall temperature of the cylinder 1. The ventilation net 21 on the inner wall of the side of the cover 2 corresponds to the side position of the heat dissipation grooves 12 and is arranged in a ring along the axis of the cover 2. The external airflow can enter the gap area between the cover 2 and the cylinder 1 through the ventilation net 21 and blow directly on the surface of the heat dissipation grooves 12. At the same time, the air heated by heat in the gap can be discharged through the ventilation net 21 to form an airflow circulation, further enhancing the heat dissipation efficiency of the heat dissipation grooves 12 and preventing heat from being trapped in the gap and transferred back to the cover 2.

[0034] The heat insulation plate 24 is set between the cylinder 1 and the cover 2 and covers the heat dissipation groove 12. The cooperation between the heat insulation plate 24 and the groove gap forms a double barrier to prevent heat from being directly transferred to the cover 2 through the metal around the groove.

[0035] The sealing gasket 13 fixed on the inner wall of the top of the cylinder 1 will be squeezed by the outer wall of the bottom of the cover 2 and the inner wall of the top of the cylinder 1 after the cover 2 and the cylinder 1 are assembled. The elastic deformation of the sealing gasket 13 will fill the tiny gap between the two to prevent the damping oil inside the cylinder 1 from leaking. When the piston rod reciprocates in the sliding hole 211, the sealing ring 23 will fit tightly against the outer wall of the piston rod to prevent the damping oil from leaking through the gap between the sliding hole 211 and the piston rod.

[0036] During assembly, the fixing ring plate 14 on the side of the cylinder 1 and the connecting ring plate 22 on the side of the cover 2 are tightly locked together by screws 15. The design of the ring array makes the tightening force of the screws 15 evenly distributed on the connecting circumference, avoiding excessive local force that could cause the cylinder 1 and cover 2 to misalign.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low thermal conductivity connection structure between an aluminum cylinder and an end cap of a shock absorber, characterized in that, include: A cylindrical body (1) is provided with a cover (2) on the outer wall of the top of the cylindrical body (1); An installation ring (11) is fixedly connected to the outer wall at the bottom of the cylinder (1), a heat dissipation groove (12) is provided on the outer wall at the top of the cylinder (1), a sealing gasket (13) is fixedly connected to the inner wall at the top of the cylinder (1), a fixing ring plate (14) is fixedly connected to the outer wall on the side of the cylinder (1), and a screw (15) is slidably connected to the inner wall of the fixing ring plate (14).

2. The low thermal conductivity connection structure between the aluminum cylinder and the end cap of the shock absorber according to claim 1, characterized in that: The heat dissipation grooves (12) are arranged in a ring along the central point of the cylinder (1), and the screws (15) are arranged in a ring along the central point of the mounting ring (11).

3. The low thermal conductivity connection structure between the aluminum cylinder and the end cap of the shock absorber according to claim 1, characterized in that: A ventilation mesh (21) is fixedly connected to the inner wall of the side of the cover (2). A sliding hole (211) is opened on the outer wall of the top of the cover (2). A connecting ring plate (22) is fixedly connected to the outer wall of the side of the cover (2). A sealing ring (23) is fixedly connected to the inner wall of the sliding hole (211). A heat insulation plate (24) is slidably connected to the inner wall of the cover (2).

4. The low thermal conductivity connection structure between the aluminum cylinder and the end cap of the shock absorber according to claim 3, characterized in that: The ventilation mesh (21) is arranged in a ring along the central point of the cover (2), and the sealing ring (23) is arranged vertically along the inner wall of the sliding hole (211).

5. The low thermal conductivity connection structure between the aluminum cylinder and the end cap of the shock absorber according to claim 3, characterized in that: The outer wall of the bottom of the heat insulation plate (24) is in contact with the outer wall of the top of the cylinder (1), and the heat insulation plate (24) is located above the heat dissipation groove (12). The outer wall of the bottom of the cover (2) is in contact with the outer wall of the top of the sealing gasket (13). The position of the ventilation net (21) corresponds to the position of the side of the heat dissipation groove (12).

6. The low thermal conductivity connection structure between the aluminum cylinder and the end cap of the shock absorber according to claim 1, characterized in that: The outer wall of the screw (15) is slidably connected to the inner wall of the connecting ring plate (22), and the fixing ring plate (14) is fixedly connected to the connecting ring plate (22) by the screw (15).

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