A kind of bullet
By setting a double-layer elastic structure on the spring substrate, the overload resistance and rebound performance of the spring are improved by utilizing three-dimensional space design, which solves the problems of easy deformation and large space occupation of existing springs and realizes the compatibility of miniaturized design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ELECTRIC CONNECTOR TECH
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-14
AI Technical Summary
Existing springs are prone to permanent deformation under pressure, have insufficient overload resistance, and conventional double-elastic structures occupy too much space, which is not conducive to miniaturization.
Design a spring sheet by setting up parallel double elastic structures on a substrate, wherein the second elastic structure is located below the first elastic structure. By stacking the double elastic structures, the planar space occupied by the multiple elastic structures is converted into three-dimensional space, the vertical space is used to enhance the elastic force output, and the rebound force is provided by the cooperation of the pressure-applying part and the pressure-bearing part.
Without increasing the size of the spring, the overload resistance and resilience of the spring are significantly enhanced, the contact resistance fluctuation is reduced, and the signal transmission is ensured to be stable.
Smart Images
Figure CN224502387U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronics, specifically a spring clip. Background Technology
[0002] As a core component of electronic connectors, contact springs provide stable contact pressure through elastic deformation, which is crucial for ensuring the reliability of power supply and signal transmission in devices. They are widely used in high-precision fields such as smartphones and automotive electronics. With the continuous upgrading and iteration of end products, the requirements for contact spring performance are becoming increasingly stringent, especially the resilience and deformation resistance, which have become core indicators in contact spring design. Existing single-elastic contact springs are prone to permanent deformation under excessive pressure and have insufficient overload resistance; while conventional double-elastic contact springs improve resilience through multi-point contact, their large structural space is not conducive to the miniaturization of contact springs.
[0003] Therefore, it is necessary to design a new structure to improve the above problems. Utility Model Content
[0004] This invention provides a spring that, while maintaining the spatial advantages of a miniature spring, increases its force and improves its overload resistance. The objective of this invention is achieved through the following scheme:
[0005] A spring sheet includes a substrate, a first sidewall and a second sidewall extending upward from both sides of the substrate. One end of the substrate is bent to form a first elastic structure and a second elastic structure. The second elastic structure is located below the first elastic structure. A pressure-applying portion is provided at the free end of the first elastic structure, and a pressure-bearing portion is provided at the free end of the second elastic structure. When the first elastic structure is pressed down, the pressure-applying portion presses against the pressure-bearing portion, and the second elastic structure provides elastic support for the first elastic structure. Spring sheets rely on the deformation of their own material to generate rebound. Thickening the material can increase the elastic force, but the improvement effect is limited, and the cost increases accordingly, making it unsuitable for scenarios with limited installation space. Setting parallel dual-elastic structure spring sheets on the substrate can avoid overpressure, but it increases the projected area, which is not conducive to the miniaturization of the spring sheet structure. This solution constructs a second elastic structure below the first elastic structure. Through the stacked layout of the dual elastic structures, the planar occupation of multiple elastic structures is converted into efficient utilization of three-dimensional space. When the first elastic structure is moved downward under force, the pressure-applying portion presses against the pressure-bearing portion below it, forcing the second elastic structure to also undergo elastic deformation, allowing the spring sheet as a whole to provide greater elastic force output. The elastic potential energy stored in the second elastic structure pushes back the pressure-applying part, providing a rebound force to the first elastic structure, making it less likely for the spring to lose contact with the other component. Especially when the end product is in a vibrating environment, the first elastic structure may temporarily detach from the other component due to vibration. The rebound force provided by the second elastic structure can assist the first elastic structure in quickly resetting, reducing contact resistance fluctuations and ensuring stable signal transmission.
[0006] Preferably, the first elastic structure includes a first connecting portion, a first elastic arm, a first contact portion, and a first support arm connected in sequence; the second elastic structure includes a second connecting portion, a second elastic arm, a second contact portion, and a second support arm connected in sequence. The elastic arm extends obliquely upward from the end of the connecting portion; the contact portion is an arc-shaped structure located at the end of the elastic arm; the end of the contact portion continues to extend to form the support arm. When the spring sheet connects with the other component, the contact portion is subjected to force, the elastic arm deforms and stores energy, the support arm helps to disperse the stress, and the connecting portion is a fixed segment connected to the substrate. The height of the second elastic structure is lower than that of the first elastic structure; correspondingly, the heights of the first connecting portion, the first elastic arm, the first contact portion, and the first support arm are lower than those of the second connecting portion, the second elastic arm, the second contact portion, and the second support arm.
[0007] Preferably, the pressure-applying part is a groove located at the end of the first support arm; the pressure-bearing part is a flat plate structure formed by bending the second support arm outward; the pressure-bearing part extends into the groove. By setting the upper pressure-applying part in the shape of a groove, the pressure-bearing part extending into it is limited, effectively preventing the pressure-bearing part from coming out during contact.
[0008] Preferably, limiting windows are provided on the first and second sidewalls, and the end of the first support arm extends toward its adjacent sidewall to form a pre-compression part, which abuts upward against the limiting window. The substrate and the two sidewalls enclose a space, and the sidewalls can protect the elastic structure located therein, reduce the probability of the spring sheet being damaged by lateral impact, and play a scratch-proof role. The pre-compression part abuts upward against the limiting window, and the limiting window locks the first elastic structure in a preset compressed state, providing it with a certain initial contact force, reducing errors generated during the manufacturing process, and solving the problem of material relaxation. At the same time, the structure of the limiting window constrains the movement path of the first elastic structure, preventing the first elastic structure from coming out. When the spring sheet is subjected to the ultimate pressure, the pre-compression part is completely pressed into the limiting window, and the limiting window plays a rigid support role, preventing the first elastic structure from deforming further and improving the compressive strength limit.
[0009] Preferably, the main body of the first elastic structure has a hollow groove, which can at least accommodate the second elastic structure. The hollow groove ensures that the first and second elastic structures do not interfere with each other during elastic deformation.
[0010] Preferably, the spring is an integrally formed part, with the first elastic structure located on both sides of the second elastic structure. The second elastic structure is made from a sheet metal produced by processing the hollowed-out groove through a stamping process. The hollowed-out groove is located in the middle of the first elastic structure. The sheet metal cut from the hollowed-out groove is further processed through stamping and other processes to form the second elastic structure. The first elastic structure is located on both sides of the second elastic structure and is higher than the second elastic structure. Except for the pressure-applying and pressure-bearing parts that contact each other, there is no material bridging area between the two elastic structures. This design can better disperse the stress generated during the operation of the spring and extend its service life.
[0011] The beneficial effects of this utility model are as follows: It provides a spring sheet with a second elastic structure set below the first elastic structure. The pressure-applying part at the end of the first elastic structure cooperates with the pressure-bearing part at the end of the second elastic structure to provide a rebound force for the first elastic structure. The double-layer structure can increase the force value in a limited space and enhance the overload resistance without expanding the structural size. Attached Figure Description
[0012] Figure 1 This is an overall schematic diagram of a spring sheet in an embodiment of this utility model;
[0013] Figure 2 This is an overall schematic diagram of a spring clip from another perspective in an embodiment of this utility model;
[0014] Figure 3 This is an overall schematic diagram of a spring clip from another perspective in an embodiment of this utility model;
[0015] Figure 4 This is a cross-sectional view of a spring clip in an embodiment of the present utility model;
[0016] Figure 5 This is a cross-sectional view of a spring clip in an embodiment of the present invention from another perspective;
[0017] Figure 6 This is a top view of a spring sheet in an embodiment of this utility model.
[0018] The reference numerals in the accompanying drawings include:
[0019] Spring sheet-1, substrate-20, first sidewall-201, second sidewall-202, limiting window-203, first elastic structure-30, pressure application part (groove)-301, first connecting part-302, first elastic arm-303, first contact part-304, first support arm-305, pre-pressing part-3051, hollow groove-306, second elastic structure-40, pressure bearing part-401, second connecting part-402, second elastic arm-403, second contact part-404, second support arm-405. Detailed Implementation
[0020] This application provides a spring sheet that enhances the elasticity of the spring sheet within a compact space, thus solving the problem of the spring sheet being prone to deformation during use.
[0021] The technical solution in this application is to solve the above-mentioned technical problems, and the overall approach is as follows:
[0022] A spring sheet includes a substrate. One end of the substrate is bent to form a first elastic structure and a second elastic structure. The second elastic structure is located below the first elastic structure. A pressure-applying portion is provided at the free end of the first elastic structure, and a pressure-bearing portion is correspondingly provided at the free end of the second elastic structure. During operation, the pressure-applying portion presses against the pressure-bearing portion, and both elastic structures undergo elastic deformation simultaneously, providing a greater elastic force output. The second elastic structure supports the first elastic structure, providing it with elastic restoring force. Through clever design of the position and contact structure of the two elastic structures, the elastic performance of the spring sheet is improved without occupying excessive installation space, thus adhering to the miniaturization trend of spring sheets.
[0023] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0024] like Figures 1 to 6 The image shown is an embodiment of a spring clip according to this application:
[0025] A spring sheet 1 includes a substrate 20, a first sidewall 201, a second sidewall 202, a first elastic structure 30, and a second elastic structure 40. The first sidewall 201 and the second sidewall 202 are formed by extending upward from opposite sides of the substrate 20. The first elastic structure 30 and the second elastic structure 40 are formed by bending from the same end of the substrate 20. The elastic structure is located within the open space enclosed by the sidewall and the substrate 20, and the sidewall provides protection for the elastic structure.
[0026] The second elastic structure 40 is located below the first elastic structure 30. The free end of the first elastic structure 30 has a pressure-applying part 301, and the free end of the second elastic structure 40 has a pressure-bearing part 401. When the spring piece 1 contacts the other component, the first elastic structure 30 is pressed down, and the pressure-applying part 301 presses against the pressure-bearing part 401. The second elastic structure 40 provides elastic support for the first elastic structure 30. On one hand, the two elastic structures in this design simultaneously participate in stress and deformation, converting more elastic potential energy into elastic force and providing greater elastic force output. During this process, the second elastic structure 40 supports the first elastic structure 30 through the pressure-bearing part 401, dispersing stress and avoiding the risk of breakage due to excessive stress concentration, thus enhancing the overload resistance of the spring piece 1. On the other hand, by placing the second elastic structure 40 below the first elastic structure 30, the deformation space reserved above the substrate 20 for the first elastic structure 30 is rationally utilized. Without affecting the normal operation of the first elastic structure 30, the vertical space is cleverly utilized, catering to the trend of spring piece miniaturization.
[0027] The first elastic structure 30 includes a first connecting portion 302, a first elastic arm 303, a first contact portion 304, and a first support arm 305 connected in sequence. The second elastic structure 40 includes a second connecting portion 402, a second elastic arm 403, a second contact portion 404, and a second support arm 405 connected in sequence. The connecting portion is a fixed segment connected to the substrate 20 and is formed by bending one end of the substrate 20 in the opposite direction. The elastic arm deforms to provide elastic force and is formed by extending obliquely upward from the end of the connecting portion. The contact portion is an arc-shaped structure located at the end of the elastic arm and is used to connect with a counterpart component. The support arm provides a compressive reverse force and is formed by extending downward from the other end of the contact portion.
[0028] Limiting windows 203 are provided on the first sidewall 201 and the second sidewall 202. The end of the first support arm 305 extends toward its adjacent sidewall to form a pre-compression part 3051, which extends into and abuts against the limiting window 203. The pre-compression part 3051 abuts upward against the limiting window 203, which provides a certain initial contact force for the spring 1, reducing errors generated during manufacturing and solving the problem of material relaxation. The limiting window 203 also constrains the movement path of the first elastic structure 30, preventing it from detaching. When the spring 1 is subjected to ultimate pressure, the pre-compression part 3051 is completely pressed into the limiting window 203, which provides rigid support and prevents further deformation of the first elastic structure 30.
[0029] The main body of the first elastic structure 30 has a hollowed-out groove 306, which is specifically located in the middle of the first connecting part 302 and the first elastic arm 303, and can at least accommodate the second elastic structure 40. This ensures that the two elastic structures will not interfere with each other when they deform. The spring piece 1 is a one-piece molded part, and the second elastic structure 40 is made of the sheet metal produced by processing the hollowed-out groove 306 through a stamping process. The first elastic structure 30 is located on both sides of the second elastic structure 40. Apart from the pressure-applying part 301 and the pressure-bearing part 401 that are in contact with each other, there are no other material bridging areas between the two elastic structures. This design has a better stress dispersion effect.
[0030] The pressure-applying part 301 and the pressure-bearing part 401 can be structured as follows: the pressure-applying part 301 is a groove 301 located at the end of the first support arm 305, and the pressure-bearing part 401 is a flat plate structure formed by bending the second support arm 405 outward and extending into the groove 301. As the first elastic structure 30 is pressed down, the groove-shaped pressure-applying part 301 can always be precisely engaged with the flat plate-shaped pressure-bearing part 401, preventing tilting or detachment even when the end product is subjected to vibration or impact. Other feasible structures can also be used for the pressure-applying part 301 and the pressure-bearing part 401.
[0031] In summary, this utility model relates to a spring sheet with a dual elastic structure. The two elastic structures are in contact through the pressure-applying part and the pressure-bearing part. Both elastic structures deform, outputting a larger elastic force, increasing the force value, and enhancing the overload resistance. The first elastic structure is located above the second elastic structure, eliminating the need to increase the volume of the spring sheet and achieving high space utilization efficiency.
[0032] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0033] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A spring sheet, comprising a substrate, a first sidewall and a second sidewall extending upward from both sides of the substrate, characterized in that, One end of the substrate is bent to form a first elastic structure and a second elastic structure. The second elastic structure is located below the first elastic structure. The free end of the first elastic structure is provided with a pressure-applying part, and the free end of the second elastic structure is provided with a pressure-bearing part. When the first elastic structure is pressed down, the pressure-applying part presses on the pressure-bearing part, and the second elastic structure provides elastic support force for the first elastic structure.
2. The spring clip according to claim 1, characterized in that, The first elastic structure includes a first connecting part, a first elastic arm, a first contact part, and a first support arm connected in sequence; the second elastic structure includes a second connecting part, a second elastic arm, a second contact part, and a second support arm connected in sequence.
3. A spring clip according to claim 2, characterized in that, The pressure-applying part is a groove located at the end of the first support arm; the pressure-bearing part is a flat plate structure formed by bending the second support arm outward; the pressure-bearing part extends into the groove.
4. A spring clip according to claim 2, characterized in that, Limiting windows are provided on the first sidewall and the second sidewall, and the end of the first support arm extends toward the adjacent sidewall to form a pre-compression part, which abuts against the limiting window upward.
5. A spring clip according to any one of claims 1 to 4, characterized in that, The main body of the first elastic structure is provided with a hollow groove, which can at least accommodate the second elastic structure.
6. A spring clip according to claim 5, characterized in that, The spring sheet is an integrally formed part, the first elastic structure is located on both sides of the second elastic structure, and the second elastic structure is made by stamping a sheet material produced by processing the hollow groove.