Coil spring with reinforcing sheets
By incorporating a reinforcing sheet structure within the inner coil section of the coil spring, the problem of fatigue cracking in the inner coil section material is solved, thus extending the service life of the coil spring.
Patent Information
- Application Number
- CN202520461363.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-03-14
AI Technical Summary
The material of the inner coil section of the coil spring is prone to fatigue cracks under long-term repeated stress, which affects its service life.
A reinforcing plate structure is provided in the inner coil section of the coil spring. The elastic spring is limited on the reinforcing plate by the first limiting space and the second limiting space, which disperses the stress to the outer ring and the reinforcing plate body, thereby reducing the working stress of the coil spring body.
To prevent fatigue cracks and extend the service life of coil springs.
Smart Images
Figure CN223781940U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coil spring technology, and in particular to a coil spring with a reinforcing plate. Background Technology
[0002] A coil spring is a type of spring, specifically a planar spiral spring, also known as a clockwork spring. It can continuously provide a large restoring force in confined spaces, allowing a mechanical component to return to its original position after one stroke, ready for the next stroke. One end of the coil spring is usually fixed. During the continuous winding and unwinding process, the inner section of the coil spring, i.e., the part connected to the inner end, bears relatively greater stress. Under long-term, repeated stress, the material is more prone to fatigue cracks, leading to insufficient restoring force and affecting the normal use of the coil spring. These problems urgently need to be solved in this field. Utility Model Content
[0003] The purpose of this invention is to address the shortcomings of the aforementioned technologies by designing a coil spring with a reinforcing plate. By setting a reinforcing plate structure in the inner coil section of the coil spring, the stress generated by the elastic spring during winding and release is dispersed to the reinforcing plate body on the outer ring, thereby reducing the working stress of the coil spring body, preventing the generation of fatigue cracks, and extending the service life of the coil spring.
[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a coil spring with a reinforcing plate, comprising:
[0005] The coil spring body includes an elastic spring sheet extending in a helical direction, and an elastic inner end and an elastic outer end respectively disposed at both ends of the elastic spring sheet. The elastic inner end and its corresponding elastic spring sheet are arranged at an angle to form a bent section.
[0006] The reinforcing sheet structure includes a reinforcing sheet body extending in a spiral direction, and a reinforcing inner end and a reinforcing outer end respectively disposed at both ends of the reinforcing sheet body. The reinforcing inner end and its corresponding reinforcing sheet body are arranged at an angle to form a first limiting space for the insertion of the bent section.
[0007] The reinforcing sheet body is wound at least one turn, with the outer reinforcing end passing through the inner reinforcing end, so that the gap between two adjacent turns of the reinforcing sheet body forms a second limiting space for the insertion of an elastic spring.
[0008] Preferably, the elastic spring, the inner elastic end, and the outer elastic end are integrated into a single structure.
[0009] Preferably, the angle between the elastic inner end and its corresponding elastic spring is greater than 0° and less than 180°.
[0010] Preferably, the reinforcing sheet body, the inner reinforcing end, and the outer reinforcing end are integrated into a single structure.
[0011] Preferably, the angle between the inner end of the reinforcement and the corresponding reinforcement sheet body is greater than 0° and less than 180°.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This utility model provides a coil spring with a reinforcing plate. By setting a reinforcing plate structure in the inner coil section of the coil spring, the first limiting space and the second limiting space limit the elastic spring sheet on the reinforcing plate structure, preventing excessive deformation of the bent section and its extended elastic spring sheet portion. Furthermore, the reinforcing plate structure disperses the stress generated by the elastic spring sheet during the winding and releasing process to the outer reinforcing plate body, reducing the working stress of the coil spring body, preventing the generation of fatigue cracks, and extending the service life of the coil spring. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the coil spring in the embodiment.
[0015] Figure 2 A schematic diagram of the structure of the coil spring body and the reinforcing sheet in the embodiment;
[0016] Figure 3 This is a schematic diagram of the structure of the coil spring body in the embodiment;
[0017] Figure 4 This is a schematic diagram of the reinforcing sheet structure in the embodiment;
[0018] Figure 5 This is a schematic diagram of the coil spring when the included angle of the bent section in the embodiment is an obtuse angle;
[0019] Figure 6 This is a schematic diagram of the coil spring when the included angle of the bent section is a right angle in the embodiment.
[0020] In the figure: 1. Spring body; 11. Elastic spring sheet; 12. Elastic inner end; 13. Elastic outer end; 101. Bending section; 2. Reinforcing sheet structure; 21. Reinforcing sheet body; 22. Reinforcing inner end; 23. Reinforcing outer end; 201. First limiting space; 202. Second limiting space. Detailed Implementation
[0021] The present invention will be further described below with reference to the embodiments and accompanying drawings.
[0022] refer to Figures 1 to 6A coil spring with a reinforcing plate includes a coil spring body 1 and a reinforcing plate structure 2. The coil spring body 1 includes an elastic spring plate 11, an elastic inner end 12 and an elastic outer end 13. The elastic spring plate 11 extends along the bolt direction. The elastic inner end 12 and the elastic outer end 13 are respectively disposed on the two ends of the elastic spring plate 11. The elastic spring plate 11, the elastic inner end 12 and the elastic outer end 13 are connected as an integral structure.
[0023] The inner elastic end 12 and its corresponding elastic spring 11 are set at an angle to form a bent section 101. The angle between the inner elastic end 12 and its corresponding elastic spring 11 is greater than 0° and less than 180°, so that the bent section 101 is V-shaped.
[0024] The reinforcing sheet structure 2 includes a reinforcing sheet body 21, an inner reinforcing end 22, and an outer reinforcing end 23. The reinforcing sheet body 21 extends in a spiral direction and is wound at least one turn. The inner reinforcing end 22 and the outer reinforcing end 23 are respectively disposed on the two ends of the reinforcing sheet body 21. The reinforcing sheet body 21, the inner reinforcing end 22, and the outer reinforcing end 23 are connected as an integral structure.
[0025] The inner end 22 is reinforced at an angle to its corresponding reinforcing plate body 21, forming a first limiting space 201 for the insertion of the bent section 101. The angle between the inner end 22 and its corresponding reinforcing plate body 21 is greater than 0° and less than 180°, making the first limiting space 201 V-shaped. The first limiting space 201 is for the insertion and fitting of the bent section 101. Preferably, the angle of the bent section 101 can be an acute angle, a right angle, or an obtuse angle.
[0026] The outer end 23 is reinforced through the inner end 22, so that the gap between the two adjacent reinforcing plates 21 forms a second limiting space 202 for the insertion of the elastic spring 11.
[0027] The coil spring incorporates a reinforcing plate structure 2 within its inner coiled section. Under the elasticity of the coil spring itself, the bent section 101 of the coil spring body 1 and the portion of its connected elastic spring sheet 11 are tightly pressed against the inner wall of the reinforcing plate structure 2. This allows the first limiting space 201 and the second limiting space 202 to limit the elastic spring sheet 11 onto the reinforcing plate structure 2, preventing excessive deformation of the bent section 101 and its extended elastic spring sheet 11. Furthermore, the reinforcing plate structure 2 disperses the stress generated by the elastic spring sheet 11 during winding and unwinding to the outer reinforcing plate body 21, preventing fatigue cracks and extending the service life of the coil spring.
[0028] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.
Claims
1. A coil spring with reinforcing plates, characterized in that, include: The coil spring body (1) includes an elastic spring sheet (11) extending in a spiral direction, and an elastic inner end (12) and an elastic outer end (13) respectively disposed at both ends of the elastic spring sheet (11). The elastic inner end (12) is arranged at an angle with the corresponding elastic spring sheet (11) to form a bent section (101). The reinforcing sheet structure (2) includes a reinforcing sheet body (21) extending in a spiral direction, and a reinforcing inner end (22) and a reinforcing outer end (23) respectively disposed at both ends of the reinforcing sheet body (21). The reinforcing inner end (22) is arranged at an angle with the corresponding reinforcing sheet body (21) to form a first limiting space (201) for the insertion of the bent section (101). The reinforcing sheet body (21) is wound at least one turn, and the outer reinforcing end (23) passes through the inner reinforcing end (22), so that the gap between two adjacent turns of the reinforcing sheet body (21) forms a second limiting space (202) for the insertion of the elastic spring (11).
2. A coil spring with a reinforcing sheet according to claim 1, characterized in that, The elastic spring (11), the elastic inner end (12), and the elastic outer end (13) are connected as a single unit.
3. A coil spring with a reinforcing sheet according to claim 1, characterized in that, The angle between the elastic inner end (12) and its corresponding elastic spring (11) is greater than 0° and less than 180°.
4. A coil spring with a reinforcing sheet according to claim 1, characterized in that, The reinforcing sheet body (21), the inner reinforcing end (22), and the outer reinforcing end (23) are connected as a single structure.
5. A coil spring with a reinforcing sheet according to claim 1, characterized in that, The angle between the inner reinforcing end (22) and its corresponding reinforcing sheet body (21) is greater than 0° and less than 180°.