A four-section hydraulic buffer spring

Abstract

This utility model relates to the field of spring technology and discloses a four-section hydraulic buffer spring, comprising: five cylindrical segments spaced apart along the axial direction; four buffer segments coaxially disposed between two adjacent cylindrical segments; each buffer segment has a thin-walled region along its circumference at its axial center, and at least one through hole penetrating the thin-walled region at its axial center; wherein, when the ratio of the residual height to the original height is 0.54, the axial force of the four-section hydraulic buffer spring is no greater than 360N; when the axial force is 5000N, the ratio of the residual height to the original height is no less than 0.45; this utility model has a simple structure, and through the multi-section buffer segment structure with thin-walled region and through hole, it achieves low load under small deformation, while maintaining a large residual height under high load, exhibiting good energy absorption and load-bearing capacity.

Description

Technical Field

[0001] This utility model relates to the field of spring technology, and in particular to a four-section hydraulic buffer spring. Background Technology

[0002] To mitigate the energy generated during vehicle bumps, traditional automotive shock absorbers consist of a housing, oil inlet pipe, support rod, and compression spring. However, the compression spring is mostly made of metal, which presents two significant technical drawbacks: First, metal compression springs are relatively heavy, increasing the weight of the component and the entire vehicle; second, metal shock absorber components are prone to hard contact after deformation, causing abnormal noises.

[0003] To address this, we designed a four-section hydraulic buffer spring. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model discloses a four-section hydraulic buffer spring.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A four-section hydraulic buffer spring, comprising:

[0007] Five cylindrical segments spaced apart along the axial direction;

[0008] Four buffer sections are coaxially positioned between two adjacent cylindrical sections;

[0009] Each buffer section has a thin-walled region along its circumference at its axial center, and at least one through hole penetrating the thin-walled region at its axial center.

[0010] Among them, when the ratio of the residual height to the original height of the four hydraulic buffer springs is 0.54, the axial force is no greater than 360N; when the axial force is 5000N, the ratio of the residual height to the original height is no less than 0.45.

[0011] Furthermore, each of the buffer sections is provided with a through hole;

[0012] The through holes of the two inner buffer sections are arranged in opposite directions to the through holes of the two outer buffer sections.

[0013] Furthermore, each of the buffer sections is provided with at least two through holes, which are arranged rotationally symmetrically around the center of the buffer section.

[0014] Furthermore, the thin-walled region is formed by providing annular grooves on the inner and / or outer surfaces.

[0015] Furthermore, the through hole has a symmetrical structure.

[0016] Furthermore, the edges of the cylindrical segment are right angles, or have straight chamfers or arc chamfers.

[0017] Furthermore, the original height of the four hydraulic buffer springs is 50±1mm. When the residual height of the four hydraulic buffer springs is 27mm, the axial force is not greater than 360N; when the axial force is 5000N, the residual height is not less than 22.5mm.

[0018] Furthermore, the diameter of the buffer segment is smaller than the diameter of the cylindrical segment.

[0019] Furthermore, the diameter of the buffer section gradually increases from both ends toward the middle.

[0020] Furthermore, the axial length of the outer cylindrical segment is less than or equal to the axial length of the inner cylindrical segment.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting four independent buffer sections with thin-walled areas and through holes, a significant throttling damping effect is generated, and it has excellent compliance in the initial compression stage, which can absorb the initial impact energy very smoothly and gently, avoid rigid collisions, and provide a "soft start" effect; at the same time, it has extremely high support under extreme loads, the amount of deformation is strictly controlled, and it will never be completely crushed, thus ensuring the safety of the protected equipment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the first structure of this utility model;

[0023] Figure 2 This is a front or rear view of the first structure of this utility model;

[0024] Figure 3 This is a cross-sectional view of the first structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the second structure of this utility model;

[0026] Figure 5 This is a front view of the second structure of this utility model;

[0027] Figure 6 This is a cross-sectional view of the second structure of this utility model;

[0028] Figure 7 This is a schematic diagram of the third structure of this utility model;

[0029] Figure 8 This is a front view of the third structure of this utility model;

[0030] Figure 9 This is a cross-sectional view of the third structure of this utility model.

[0031] In the diagram: 1. Cylindrical section; 2. Buffer section; 21. Thin-walled area; 22. Through hole; 23. Annular groove. Detailed Implementation

[0032] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if terms such as "upper", "lower", "front", "rear", "left", "right" indicate orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention. It should be understood that if terms such as "end", "side", "end portion", "side part", "lateral", "longitudinal", etc. indicate orientation or positional relationship, they are only corresponding to the length and width of the corresponding component. That is, "end" indicates the head and tail area in the length direction of the corresponding component, and "side part" indicates the head and tail area in the width direction of the corresponding component. They are used for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation.

[0033] The four-section hydraulic buffer spring of this invention is integrally formed by five cylindrical sections 1 and four buffer sections 2, alternatingly coaxially. Preferably, the four-section hydraulic buffer spring is made of plastic.

[0034] The diameter of buffer section 2 is less than or equal to the diameter of cylindrical section 1; preferably, the diameter of buffer section 2 is less than the diameter of cylindrical section 1.

[0035] Preferably, the diameter of the buffer section 2 gradually increases from both ends toward the middle.

[0036] The buffer section 2 has an annular groove 23 in the axial middle to form a thin-walled region 21, and at least one through hole 22 penetrating the thin-walled region 21 is opened in the axial middle of the buffer section 2; the number of through holes 22 on each buffer section 2 is preferably 1-8.

[0037] Furthermore, the through hole 22 has a symmetrical structure; for example, a round hole, an oblong hole, a rectangular hole, a diamond-shaped hole, an elliptical hole, or a figure-eight hole tilted at 90 degrees.

[0038] When the ratio of the residual height to the original height of the four-section hydraulic buffer spring is 0.54, the axial force is no greater than 360N; when the axial force is 5000N, the ratio of the residual height to the original height is no less than 0.45.

[0039] Example 1, in conjunction with Appendix Figure 1-3A four-section hydraulic buffer spring is disclosed. The original height of the four-section hydraulic buffer spring is designed to be 50±1mm, and it possesses specific buffering performance: when the residual height of the four-section hydraulic buffer spring is 27mm, the axial force it experiences does not exceed 360N; when the axial force reaches 5000N, the residual height of the four-section hydraulic buffer spring is not less than 22.5mm. It comprises five cylindrical sections 1 and four buffer sections 2. Each buffer section 2 has an annular groove 23 on its inner surface at the axial center, forming a thin-walled region 21.

[0040] Each buffer section 2 has two symmetrical through holes 22 at its axial center.

[0041] Preferably, the central axes of the two through holes 22 are collinear.

[0042] In this embodiment, the edges of the cylindrical segment 1 are right angles.

[0043] Example 2, in conjunction with Appendix Figure 4-6 A four-section hydraulic buffer spring, which differs from Embodiment 1 in that: each buffer section 2 has an annular groove 23 on the outer surface of the axial center, forming a thin-walled area 21.

[0044] Each buffer section 2 has a through hole 22 at its axial center. The through holes 22 of the two inner buffer sections 2 and the through holes 22 of the two outer buffer sections 2 are oriented away from each other.

[0045] In other words, when the through holes 22 of the two inner buffer sections 2 are in front of the corresponding buffer section 2, the through holes 22 of the two outer buffer sections 2 are behind the corresponding buffer section 2.

[0046] In this embodiment, the edges of the cylindrical segment 1 are treated with a straight chamfer.

[0047] Example 3, in conjunction with Appendix Figure 7-9 A four-section hydraulic buffer spring, which differs from Embodiment 1 in that: each buffer section 2 has an annular groove 23 on its inner and outer surfaces in the axial center, which together form a thin-walled area 21.

[0048] Each buffer section 2 has three rotationally symmetrical through holes 22 at its axial center. The through holes 22 of the two inner buffer sections 2 and the through holes 22 of the two outer buffer sections 2 are oriented away from each other.

[0049] In this embodiment, the edges of the cylindrical segment 1 are treated with arc chamfering.

[0050] In other embodiments, the axial length of the outer cylindrical segment 1 may be less than the axial length of the inner cylindrical segment 1.

[0051] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A four-stage hydraulic cushion spring, characterized by, include: Five cylindrical segments (1) spaced apart along the axial direction; Four buffer sections (2) are coaxially arranged between two adjacent cylindrical sections (1); Each buffer section (2) has a thin-walled area (21) in the axial middle, and at least one through hole (22) in the axial middle. Among them, when the ratio of the residual height to the original height of the four hydraulic buffer springs is 0.54, the axial force is no greater than 360N; when the axial force is 5000N, the ratio of the residual height to the original height is no less than 0.

45.

2. A four-section hydraulic buffer spring according to claim 1, characterized in that: Each of the buffer sections (2) is provided with a through hole (22); The through holes (22) of the two inner buffer sections (2) are arranged in opposite directions to the through holes (22) of the two outer buffer sections (2).

3. A four-section hydraulic buffer spring according to claim 1, characterized in that: Each of the buffer sections (2) is provided with at least two through holes (22), which are arranged rotationally symmetrically along the center of the buffer section (2).

4. A four-section hydraulic buffer spring according to claim 1, characterized in that: The thin-walled region (21) is formed by providing annular grooves (23) on the inner and / or outer surfaces.

5. A four-section hydraulic buffer spring according to claim 1, characterized in that: The through hole (22) has a symmetrical structure.

6. A four-section hydraulic buffer spring according to claim 1, characterized in that: The cylindrical segment (1) has right angle edges, or has a straight chamfer or an arc chamfer.

7. A four-section hydraulic buffer spring according to claim 1, characterized in that: The original height of the four-section hydraulic buffer spring is 50±1mm. When the residual height is 27mm, the axial force is not greater than 360N; when the axial force is 5000N, the residual height is not less than 22.5mm.

8. A four-section hydraulic buffer spring according to claim 1, characterized in that: The diameter of the buffer section (2) is smaller than the diameter of the cylindrical section (1).

9. A four-section hydraulic buffer spring according to claim 1, characterized in that: The diameter of the buffer section (2) gradually increases from both ends toward the middle.

10. A four-section hydraulic buffer spring according to claim 1, characterized in that: The axial length of the outer cylindrical segment (1) is less than or equal to the axial length of the inner cylindrical segment (1).

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