An assembled automobile suspension spring

Abstract

The utility model relates to the technical field of suspension spring, concretely is a kind of assembled car suspension spring, including suspension spring main body, the suspension spring main body is by first connector, spring main body and second connector are composed, the first connector is fixedly connected with the insertion post, the second connector is fixedly connected with insertion barrel, the insertion barrel is equipped with the cavity of adaptation with insertion post, the insertion post is inserted into cavity, buffer spring is installed in the cavity, the buffer spring one end is connected with abutment block, and the cooperation of buffer spring and abutment block in insertion barrel cavity can form overload protection structure, when external spring main body is excessively compressed or material fatigue due to jolt, heavy load appears, abutment block will contact with insertion post, buffer spring immediately shares load, avoid single spring main body to continuously bear concentrated stress, effectively delay the plastic deformation and fatigue damage of spring main body, guarantee the stability of suspension system.

Description

Technical Field

[0001] This utility model relates to the field of suspension spring technology, specifically to an assembled automotive suspension spring. Background Technology

[0002] As a core load-bearing component connecting the vehicle body and wheels, the performance and stability of automotive suspension springs directly determine the smoothness, handling, and safety of the vehicle's ride.

[0003] Currently, most mainstream automotive suspension springs on the market adopt an integrated rigid structure design, that is, a single spring body directly bears the vertical load, road impact and vibration energy during vehicle driving, and the spring body and the connecting structures at both ends are mostly fixed and integrally molded.

[0004] However, in actual use, these traditional suspension springs have certain drawbacks. When vehicles travel on bumpy roads, under heavy loads, or frequently start and stop, the spring body needs to continuously bear cyclic alternating loads, which can easily lead to over-compression and local stress concentration. On the other hand, as the usage time increases, the spring body material will gradually lose its elasticity due to metal fatigue, resulting in slower rebound speed and reduced load-bearing capacity, forming a material fatigue state. Because traditional suspension springs lack an effective pressure-sharing structure, when the spring body is in an over-compressed or fatigued state, all the loads are still concentrated on a single spring body. This not only accelerates the plastic deformation of the spring body but also exacerbates fatigue damage, ultimately leading to rapid deterioration of spring performance and a significant reduction in service life. Therefore, this utility model proposes an assembled automotive suspension spring to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an assembled automotive suspension spring to solve the problem of concentrated attenuation of spring load mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an assembled automotive suspension spring, comprising a suspension spring body, wherein the suspension spring body is composed of a first connector, a spring body, and a second connector;

[0007] The first connector is fixedly connected to a plug post, and the second connector is fixedly connected to a plug tube. The plug tube has a cavity adapted to the plug post. The plug post is inserted into the cavity. A buffer spring is installed in the cavity. One end of the buffer spring is connected to an abutment block. The abutment block is spaced a certain distance from the plug post.

[0008] Preferably, the spring body has a fixing block integrally connected to both ends, and the fixing block has the same positioning hole as the first connector and the second connector.

[0009] Preferably, the insertion end of the plug is provided with a positioning groove, and one end of the abutment block is provided with a limiting block, the diameter of the positioning groove being adapted to the limiting block.

[0010] Preferably, the other end of the buffer spring is integrally connected to a positioning block, the positioning block and the outer wall of the plug tube have the same screw hole, and the outer wall of the plug tube is also equipped with a fixing bolt.

[0011] Preferably, the fixing block on one side of the spring body has a cavity adapted to the plug-in post, and the fixing block on the other side has a cavity adapted to the plug-in tube.

[0012] Preferably, the fixing block fitted onto the plug tube also has a notch, the notch being larger than the size of the fixing bolt.

[0013] Preferably, both the ends of the first connector and the second connector are welded with adapters.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) By the cooperation of the buffer spring and the abutment block in the cavity of the plug tube, an overload protection structure can be formed. When the outer spring body is over-compressed or material fatigued due to bumps or heavy loads, the abutment block will contact the plug column, and the buffer spring will then share the load, avoiding the single spring body from continuously bearing concentrated stress, effectively delaying the plastic deformation and fatigue damage of the spring body, and ensuring the stability of the suspension system.

[0016] (2) The first connector plug and the second connector plug are connected and positioned by the fixing blocks at both ends of the spring body and the positioning holes of the connector. The components can be quickly assembled and disassembled without complicated welding or forging processes, which greatly reduces the assembly difficulty and the cost of later maintenance and replacement. When the spring body is damaged, only the corresponding component needs to be disassembled and replaced, without the need for the whole body to be scrapped. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the buffer spring mounting structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the spring body mounting structure of this utility model.

[0021] In the diagram: 1. First connector; 2. Insertion post; 21. Positioning groove; 3. Spring body; 31. Fixing block; 311. Notch; 4. Second connector; 5. Insertion tube; 51. Cavity; 6. Buffer spring; 61. Positioning block; 611. Screw hole; 62. Abutment block; 621. Limiting block; 7. Fixing bolt; 8. Adapter. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0023] Please see Figures 1 to 4 This utility model provides a technical solution: an assembled automotive suspension spring, including a suspension spring body, which is composed of a first connector 1, a spring body 3, and a second connector 4. The first connector 1 is fixedly connected to a plug-in post 2, and the second connector 4 is fixedly connected to a plug-in sleeve 5. The plug-in sleeve 5 has a cavity 51 adapted to the plug-in post 2. The plug-in post 2 is inserted into the cavity 51, and a buffer spring 6 is installed in the cavity 51. One end of the buffer spring 6 is connected to an abutment block 62, and the abutment block 62 is spaced a certain distance from the plug-in post 2.

[0024] By installing a buffer spring 6 inside the cavity 51 of the connector tube 5, when the vehicle travels over a bumpy road, the spring body 3 first buffers most of the impact force. If the impact is too great and the spring body 3 is over-compressed, the plug 2 of the first connector 1 will extend further into the connector tube 5 of the second connector 4 until it contacts the abutment block 62 of the buffer spring 6 inside the cavity 51. At this time, the buffer spring 6 intervenes to assist in buffering. The buffer spring 6 can contact the plug 2 fixed to the first connector 1 through the abutment block 62 connected to one end, sharing a large amount of load. At this time, the plug 2 is inserted into the cavity 51 of the connector tube 5 and cooperates with the abutment block 62 to transmit pressure, effectively reducing the stress on the spring body 3, avoiding accelerated plastic deformation and fatigue damage due to long-term high load, greatly extending the service life of the spring body 3, reducing the replacement frequency, and reducing the cost of use.

[0025] Please see Figure 1 as well as Figure 2 It is understood that the spring body 3 has a fixing block 31 integrally connected to both ends, and the fixing block 31 has the same positioning hole as the first connector 1 and the second connector 4.

[0026] During assembly, by using locating pins, bolts, and other connecting parts through the locating holes, the alignment of the fixing block 31 with the first connector 1 and the second connector 4 can be quickly achieved. This avoids problems such as misalignment of the cavity 51 of the plug-in post 2 and the plug-in cylinder 5, and abnormal spacing between the abutment block 62 of the buffer spring 6 and the plug-in post 2 due to assembly deviations. This ensures that the coaxiality of the spring body 3, the first connector 1, and the second connector 4 is consistent, thereby ensuring that the buffer spring 6 can accurately intervene when the spring body 3 is over-compressed, play a role in load sharing, and ensure the coordinated working efficiency of the entire suspension spring body.

[0027] Please see Figure 2 , Figure 3 It is understood that the insertion end of the plug post 2 is provided with a positioning groove 21, and one end of the abutment block 62 is provided with a limiting block 621. The size of the positioning groove 21 is adapted to the limiting block 621.

[0028] When the spring body 3 is over-compressed while the vehicle is in motion, the plug pin 2 will move inward along the cavity 51 of the plug tube 5 and come into contact with the abutment block 62. At this time, the buffer spring 6 needs to transmit the buffer force to the plug pin 2 through the abutment block 62. Since the diameter of the positioning groove 21 is compatible with the limiting block 621, the limiting block 621 of the abutment block 62 will be embedded in the positioning groove 21 of the plug pin 2, forming a snap-fit ​​structure, which can effectively prevent the plug pin 2 and the abutment block 62 from slipping off each other due to excessive impact load.

[0029] Please see Figure 3 It is understood that the other end of the buffer spring 6 is integrally connected to the positioning block 61. The positioning block 61 and the outer wall of the plug tube 5 have the same screw hole 611. The outer wall of the plug tube 5 is also equipped with a fixing bolt 7.

[0030] Since the positioning block 61 is integrally connected with the buffer spring 6, the buffer spring 6 can be firmly fixed in the preset position in the cavity 51 by aligning the positioning block 61 with the screw hole 611 on the outer wall of the plug tube 5 and then locking it with the fixing bolt 7 inserted into the screw hole 611.

[0031] Please see Figure 1 , Figure 2 , Figure 4 It is understood that the fixing block 31 on one side of the spring body 3 has a cavity adapted to the plug-in post 2, and the fixing block 31 on the other side has a cavity adapted to the plug-in tube 5.

[0032] Please see Figure 2 It is understood that the fixing block 31 fitted onto the plug tube 5 also has a notch 311, which is larger than the size of the fixing bolt 7.

[0033] When the fixing block 31 is fitted onto the plug sleeve 5, the fixing block 31 will be separated from the fixing bolt 7, causing the fixing block 31 to be unable to be installed smoothly. At this time, the size of the notch 311 on one side of the fixing block 31 is larger than that of the fixing bolt 7, so that the fixing bolt 7 can be completely accommodated in the space of the notch 311, avoiding interference between the fixing block 31 and the fixing bolt 7 during assembly or use.

[0034] Please see Figure 1 , Figure 2 It is understood that adapters 8 are welded to the ends of both the first connector 1 and the second connector 4.

[0035] The adapter 8 is fixed to the first connector 1 and the second connector 4 by welding. Compared with detachable methods such as bolt connection, the welded structure can form a continuous metal joint surface, effectively transfer load, and avoid loosening of the connection due to vibration and impact.

[0036] In use, first align the positioning block 61 of the buffer spring 6 with the outer wall of the plug tube 5, insert the fixing bolt 7 and fix it through the screw hole 611, so that the buffer spring 6 and the abutment block 62 are placed in the cavity 51. Then, put the cavity openings of the fixing blocks 31 on both sides of the spring body 3 into the plug post 2 and the plug tube 5 respectively. The notch 311 is set to accommodate the fixing bolt 7 to avoid interference. Then, use the positioning pin and bolt to pass through the positioning hole to fix the fixing block 31 with the first connector 1 and the second connector 4. Finally, install the suspension spring body on the car suspension through the adapter 8.

[0037] When a vehicle travels over a bumpy road, the spring body 3 first buffers the impact force; when the impact is too great and the spring body 3 is over-compressed, the plug post 2 extends into the cavity 51, and the limiting block 621 of the abutment block 62 is embedded in the positioning groove 21. The buffer spring 6 assists in buffering and sharing the load, reducing the stress on the spring body 3.

[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. An assembled automotive suspension spring, comprising a suspension spring body, wherein the suspension spring body is composed of a first connector (1), a spring body (3), and a second connector (4), characterized in that: The first connector (1) is fixedly connected to a plug post (2), and the second connector (4) is fixedly connected to a plug tube (5). The plug tube (5) has a cavity (51) that is adapted to the plug post (2). The plug post (2) is inserted into the cavity (51). A buffer spring (6) is installed in the cavity (51). One end of the buffer spring (6) is connected to an abutment block (62). The abutment block (62) is spaced a certain distance from the plug post (2).

2. The assembled automotive suspension spring according to claim 1, characterized in that: The spring body (3) has a fixing block (31) integrally connected to both ends. The fixing block (31) has the same positioning hole as the first connector (1) and the second connector (4).

3. The assembled automotive suspension spring according to claim 1, characterized in that: The insertion end of the plug (2) is provided with a positioning groove (21), and one end of the abutment block (62) is provided with a limiting block (621). The size of the positioning groove (21) is adapted to the size of the limiting block (621).

4. The assembled automotive suspension spring according to claim 1, characterized in that: The buffer spring (6) is integrally connected to a positioning block (61) at the other end. The positioning block (61) and the outer wall of the plug tube (5) have the same screw hole (611). The outer wall of the plug tube (5) is also equipped with a fixing bolt (7).

5. The assembled automotive suspension spring according to claim 2, characterized in that: The fixing block (31) on one side of the spring body (3) has a cavity that is compatible with the plug-in post (2), and the fixing block (31) on the other side has a cavity that is compatible with the plug-in tube (5).

6. The assembled automotive suspension spring according to claim 5, characterized in that: The fixing block (31) fitted on the plug tube (5) also has a notch (311), which is larger than the size of the fixing bolt (7).

7. The assembled automotive suspension spring according to claim 1, characterized in that: Both the first connector (1) and the second connector (4) have adapters (8) welded to their ends.

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