Connection structure of a suspension damper

Abstract

The present application relates to a kind of connecting structure of suspension system damper of automobile suspension system, comprising pin tube, the one end of pin tube is the elastic tube section of radial converging expansion type, the other end is the conical tube section of small inside diameter and large outside diameter, and conical pin column is inserted in the tube cavity of elastic tube section.The present application is inserted into the elastic tube section of pin tube by conical pin column, and conical pin column is extruded elastic tube section and expands outward with insertion depth, and the wall of damper assembly hole is elastically extruded, play fastening effect, realize damper assembly fixed;Realize the fastening mode different from traditional threaded connection, simple structure, reduce the assembly operation space of connecting structure.

Description

Technical Field

[0001] This invention relates to automotive suspension systems, specifically the connection structure of suspension system dampers. Background Technology

[0002] Vehicle suspension systems can isolate and attenuate the effects of powertrain on vehicle vibrations, and are an important factor affecting overall vehicle comfort. In the development of suspension system projects, dampers need to be installed in the suspension system to adjust the vertical and horizontal vibration frequencies of the suspension system due to the need for vibration frequency adjustment.

[0003] The traditional connection method for adding a damper to a suspension system is a threaded connection. This can be achieved by using bolts and nuts, or by making the connecting holes on the support arm or damper in the suspension system threaded holes for bolt connection. Both bolted connection methods require tools and necessitate providing space for tooling operations. Summary of the Invention

[0004] The purpose of this invention is to provide a connection structure for a suspension damper that eliminates the need for lateral operation of the assembly tool, thereby reducing the assembly operation space of the connection structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a connection structure for a suspension damper, including a pin tube, one end of which is a radially expanding elastic tube section, and the other end of which is a continuous and complete circumferential wall, wherein the tube section of the complete circumferential wall is tapered with a smaller inner diameter and a larger outer diameter, and a tapered pin is inserted into the cavity of the elastic tube section.

[0006] In the above scheme, one end of the pin is a radially expanding elastic section. This expanding elastic section is first inserted into the corresponding connection hole on the damper and then further inserted into the connection hole on the support arm. During this insertion process, the elastic section of the pin is constrained by the hole wall and can radially contract, allowing it to pass smoothly through the connection holes on the damper and the support arm. Furthermore, the other end of the pin has a tapered outer wall. During insertion, when a point on the tapered outer wall of the pin, matching the diameter of the damper's connection hole, reaches the opening of the damper's connection hole, the pin cannot be inserted further. At this point, the end of the elastic section of the pin is exposed outside the connection hole opening on the support arm. Inserting the pin along the axial direction of the elastic section causes it to expand outwards and cannot retract, thus firmly constraining and pressing the damper and the support arm together, thereby achieving the function of fixing the damper. This technical solution occupies little assembly space, requires only axial insertion during assembly, makes damper assembly extremely convenient, and ensures reliable connection after assembly. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of the present invention;

[0008] Figure 2 , 3 These are schematic diagrams of the three-dimensional structure of the pin control system;

[0009] Figure 4 This is a three-dimensional structural diagram of the pin;

[0010] Figure 5 This is a schematic diagram of the three-dimensional structure of the outer tube. Detailed Implementation

[0011] like Figure 1 As shown in Figure 7, this invention discloses a connection structure for a suspension damper A, used to connect the damper A and the support arm B in a suspension system. The suspension system adjusts its inherent vibration modes by adding the damper A. The connection structure includes a pin tube 10, one end of which is a radially expanding elastic tube section 11, and the other end of which has a continuous and complete circumferential wall. This complete circumferential wall section is tapered with a smaller inner diameter and a larger outer diameter. A tapered pin 20 is inserted into the cavity of the elastic tube section 11.

[0012] In use, first locate the position of damper A in the suspension system, aligning the damper connection hole A1 and the support arm connection hole B1. The pin tube 10 passes through the damper connection hole A1 and the support arm connection hole B1 in sequence. The diameter of the larger-diameter tapered section of the pin tube 10 is larger than the diameter of the damper connection hole A1. After placement, part of the pin tube 10 extends beyond the end face of the damper connection hole A1. The elastic section 11 at the other end of the pin tube 10 extends beyond the end face of the support arm connection hole B1. Parts of the pin tube 10 at both ends are located between the support arm connection hole B1 and the damper connection hole A1. The external part of pin 20; the conical cylindrical surface of pin 20 compresses the interior of elastic tube section 11, causing elastic tube section 11 to expand outward, and the outer wall of elastic tube section 11 compresses the wall of support arm connection hole B1; pin tube 10 axially constrains the two ends of damper connection hole A1 and support arm connection hole B1, restricting the tendency of the two to separate from each other along the axial direction or the length of the hole, thus realizing the connection and fixation of support arm B and damper A; the above technical solution ensures that there is only a simple axial insertion action during assembly, without the rotation action of tools such as wrenches and sockets, so the working space is limited.

[0013] Furthermore, the elastic pipe section 11 is composed of 3 to 6 pipe wall segments 112 arranged circumferentially, with grooves 111 cut into the pipe wall along the pipe length direction and separated by the grooves 111.

[0014] The elastic tube segment 11 can be configured in various ways. One method is to use a groove 111 to separate the tube wall flap unit 112. The groove 111 is provided so that when the tube wall flap unit 112 is squeezed by the pin 20, the deformed edge of the tube wall flap unit 112 has space to be released, which increases the depth of the pin 20 inserted into the elastic tube segment 11 and makes the connection between the pin 20 and the elastic tube segment 11 more stable.

[0015] Furthermore, the end of the elastic tube segment 11 has an external check pawl 113. When the elastic tube segment 11 is compressed by the pin 20, the check pawl 113 at its end expands outward, causing the end face of the check pawl 113 to grip the edge of the support arm connection hole B1, thus restricting the possibility of the pin tube 10 moving upward. Figure 1 As shown, this is a unidirectional restricted displacement.

[0016] Furthermore, in another embodiment, the end of the tube wall flap unit 112 has an external check claw 113. Similarly, when the tube wall flap unit 112 is pressed by the pin 20, the end face of the check claw 113 at the end grips the end face of the support arm connecting hole B1, which can prevent the pin tube 10 from moving upward, and the axial fixing effect of the pin tube 10 is better.

[0017] Furthermore, an outer tube 30 is sleeved on the outer wall of the pin tube 10. The two ends of the middle section 31 of the outer tube 30 are the first elastic tube section 32 and the second elastic tube section 33, respectively. The two ends of the pin tube 10 are placed outside the first elastic tube section 32 and the second elastic tube section 33.

[0018] like Figure 1 As shown, in use, one end of the outer tube 30 is close to the damper connection hole A1, and part of it extends out of the end face of the damper connection hole A1. The other end of the outer tube 30 is located between the pin tube 10 and the wall of the support arm connection hole B1, and both ends of the outer tube 30 are squeezed by the outer wall of the pin tube 10. The first elastic tube section 32 and the second elastic tube section 33 are made of elastic material. When the outer tube 30 is squeezed by the pin tube 10, it can fill the gap between the pin tube 10 and the damper connection hole A1 and the support arm connection hole B1. This ensures that the pin 20 is subjected to uniform extrusion force throughout the entire pin length and ensures that a reliable friction force is established between the pin 20 and the pin tube 10 to prevent axial separation between the two. In addition, the first elastic tube section 32 is placed between the pin tube 10 and the damper connection hole A1 to prevent the pin tube 10 from rotating circumferentially and ensure the reliability of axial pinning.

[0019] Furthermore, the large-diameter end of the tapered pin 20 is larger than the natural diameter of the elastic tube section 11. This ensures that the radial outward expansion deformation of the elastic tube section 11 forms a reliable mating fit with the support arm connection hole B1.

[0020] Furthermore, the contact surface between the tapered pin 20 and the elastic tube section 11 forms an anti-slip fit.

[0021] The contact surface between the tapered pin 20 and the elastic tube section 11 forms an anti-slip fit, which can prevent the elastic tube section 11 from separating from the pin 20.

[0022] Furthermore, the outer wall of the outer tube 30 is an anti-slip surface; the outer wall of the tube wall flap unit 112 near the check claw 113 is an anti-slip surface; and the inner walls at both ends of the outer tube 30 are anti-slip surfaces. The above anti-slip design is intended to prevent circumferential rotation between components, thereby weakening the axial fastening constraint and preventing the components from loosening in the axial direction.

Claims

1. A connection structure for a suspension damper, characterized in that: One end of the pin tube (10) is a radially expanding elastic tube section (11), and the other end of the opposite end is a continuous and complete circumferential wall. The tube section of the complete circumferential wall is tapered with a small inner diameter and a large outer diameter. A conical pin (20) is inserted into the cavity of the elastic tube section (11). Parts of the tube sections at both ends of the pin tube (10) are located outside the support arm connection hole (B1) and the damper connection hole (A1). The outer tube (30) is fitted on the outer wall of the pin tube (10). The two ends of the middle section (31) of the outer tube (30) are the first elastic tube section (32) and the second elastic tube section (33), respectively. The two ends of the pin tube (10) are placed outside the first elastic tube section (32) and the second elastic tube section (33).

2. The connection structure of the suspension damper according to claim 1, characterized in that: The elastic pipe section (11) is composed of 3 to 6 pipe wall segments (112) arranged circumferentially, with grooves (111) opened on the pipe wall along the pipe length direction and separated by the grooves (111).

3. The connection structure of the suspension damper according to claim 1, characterized in that: The end of the elastic tube section (11) has an external check claw (113).

4. The connection structure of the suspension damper according to claim 2 or 3, characterized in that: The end of the tube wall flap unit (112) has an external check claw (113).

5. The connection structure of the suspension damper according to claim 1, characterized in that: The large-diameter end of the tapered pin (20) is larger than the natural diameter of the elastic pipe section (11).

6. The connection structure of the suspension damper according to claim 5, characterized in that: The contact surface between the tapered pin (20) and the elastic tube section (11) forms an anti-slip fit.

7. The connection structure of the suspension damper according to claim 1, characterized in that: The outer wall of the outer tube (30) is a non-slip surface.

8. The connection structure of the suspension damper according to claim 4, characterized in that: The outer wall of the tube wall flap unit (112) near the check claw (113) is an anti-slip surface.

9. The connection structure of the suspension damper according to claim 1, characterized in that: The inner walls at both ends of the outer tube (30) are non-slip surfaces.

Images