A kind of bullet

Abstract

The utility model provides a spring piece, including the base plate, the two end portions of base plate are bent and form first elastic structure and second elastic structure, second elastic structure is located below first elastic structure, and the free end of first elastic structure is provided with the pressure part, utilizes the pressure part of first elastic structure end and second elastic structure mutual cooperation, and two elastic structures occur elastic deformation simultaneously, can provide greater elastic force output, and the positive force of spring piece increases, sets up double -deck elastic structure in limited space, makes full use of existing space, and the volume of spring piece can not increase, can adapt the miniaturization demand of high -precision equipment well.

Description

Technical Field

[0001] This utility model relates to the field of electronics, specifically a spring clip. Background Technology

[0002] Contact springs are core components of electronic connectors, relying on elastic deformation to provide stable contact pressure. They are crucial for ensuring the reliability of power supply and signal transmission, and are widely used in high-precision devices such as smartphones and automotive electronics. Conventional contact springs rely on a single lever arm to generate elastic force, providing a limited initial positive force. Over long-term use, the continuous decay of this positive force can lead to failures such as poor contact, affecting connection reliability. While dual-elastic structures can improve performance, they come at the cost of space. How can we effectively improve the resilience of contact springs while maintaining or even reducing their footprint? This technical problem lacks an effective solution.

[0003] Therefore, it is necessary to design a structure to improve the above problems. Utility Model Content

[0004] This invention provides a spring clip that, without increasing its volume, improves its positive force output and reduces permanent deformation through optimized structural design. The objective of this invention is achieved through the following scheme:

[0005] A spring sheet includes a substrate. A first end of the substrate is bent to form a first elastic structure, and a second end of the substrate is bent to form a second elastic structure. The first and second ends are opposite to each other. 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. When the first elastic structure is pressed down, the pressure-applying portion presses against the second elastic structure, and the second elastic structure provides elastic support to the first elastic structure. Single-elasticity spring sheets rely on only a single lever arm to provide elastic force, resulting in insufficient positive contact force when in contact with other components, and are prone to deformation under excessive pressure. Dual-elasticity structures are often designed side-by-side to provide greater elastic recovery force, which leads to a large overall footprint and cannot meet the installation requirements of modern high-precision equipment. In this design, the first elastic structure and the second elastic structure are formed by bending and extending upwards from opposite ends of the substrate. The two elastic structures are opposite each other, with the second elastic structure located below the first elastic structure. This design does not increase the space occupied by the spring on the motherboard and is suitable for miniaturization requirements. A pressure-applying part is provided at the free end of the first elastic structure. When the spring is working, the pressure-applying part presses the second elastic structure, causing the second elastic structure to undergo elastic deformation and generate elastic force. The overall force value of the spring increases, and the resilience is improved. When the spring is subjected to force close to the limit value, the first elastic structure presses firmly onto the second elastic structure, and the two elastic structures share the pressure, effectively preventing the elastic structure from breaking.

[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 connecting portion is formed by bending one end of the substrate in the opposite direction. The bending design can effectively absorb some of the stress generated when the elastic arm deforms. The end of the connecting portion extends obliquely upward to form an elastic arm. The elastic arm can push the contact portion to press against the other component, forming a reliable electrical connection. The contact portion is an arc-shaped structure located at the end of the elastic arm. The contact portion is the force transmission point, and the arc-shaped structure can disperse the contact pressure and avoid stress concentration. The end of the contact portion continues to extend to form a support arm, which plays a role in overload protection.

[0007] Preferably, the pressure-applying part is a flat plate structure, formed by bending the first support arm toward the first connecting part. When the spring contacts the opposing component, the flat plate-shaped pressure-applying part presses down on the second contact part located below it; the second elastic structure undergoes elastic deformation, generating an upward reaction force to support the first elastic structure. The deformation of the first elastic structure is partially offset by the force provided by the second elastic structure, allowing for rapid recovery and good rebound performance; the elastic force of the second elastic structure is superimposed on the first elastic structure, resulting in a larger positive contact force for the spring under the same compression displacement, increasing the force value and enhancing overload resistance.

[0008] Preferably, a pressing part is provided at the free end of the second elastic structure. The pressing part is a flat plate structure formed by bending the second support arm toward the second connecting part.

[0009] Preferably, the pressing portion abuts against the substrate. When the pressing portion presses against the second contact portion, the second elastic structure undergoes elastic deformation, and the pressing portion located at the end of the second elastic structure abuts against the substrate, adding a rigid support point and preventing the spring sheet from undergoing irreversible permanent deformation.

[0010] Preferably, the two sides of the substrate are bent upwards and extended horizontally to form a raised section. The raised section is located below the pressing section and close to the second end, and the pressing section abuts against the raised section. When the pressing section presses against the second contact section, the second elastic structure undergoes elastic deformation. The pressing section at the end of the second elastic structure abuts against the raised section, applying a certain force to the raised section. The raised section deforms under the force, supporting the second elastic structure in the opposite direction. The first elastic structure, the second elastic structure, and the raised section form a "three-segment" composite structure, which supports each other to achieve positive force superposition, efficiently increasing the spring force value and improving the overload resistance.

[0011] Preferably, the two sides of the substrate are bent upwards and extended horizontally to form limiting portions, which are located above the first connecting portion and close to the first end. The first connecting portion is located in the limiting space formed between the limiting portion and the substrate, and the limiting portion can prevent the elastic structure from coming out when it stretches too much.

[0012] Preferably, the first elastic structure abuts upward against the limiting portion. In the initial state, the limiting portion applies a certain pre-pressure to the first elastic structure to reduce errors generated during the manufacturing process and solve the problem of material relaxation.

[0013] Preferably, the first elastic arm, the first contact portion, and the first support arm are provided with raised ribs. The original surface contact is transformed into point contact or line contact, resulting in stable contact; the raised ribs act as reinforcing ribs, which can enhance the strength of the product.

[0014] The beneficial effects of this utility model are as follows: It provides a spring sheet with a second elastic structure stacked below a first elastic structure. The pressure-applying part at the end of the first elastic structure cooperates with the second elastic structure to provide a rebound force to the first elastic structure. By setting a double-layer elastic structure in a limited space, the output positive force is superimposed, the spring sheet force value is increased, and overpressure is prevented, thus providing overload protection. Attached Figure Description

[0015] Figure 1 This is an overall schematic diagram of a spring sheet in an embodiment of this utility model;

[0016] Figure 2 This is an overall schematic diagram of a spring clip from another perspective in an embodiment of this utility model;

[0017] Figure 3 This is a front view of a spring clip according to an embodiment of the present utility model;

[0018] Figure 4 This is a cross-sectional view of a spring clip in an embodiment of the present utility model;

[0019] Figure 5 This is a schematic diagram of another embodiment of a spring sheet in this utility model.

[0020] The reference numerals in the accompanying drawings include:

[0021] Substrate-20, First end-201, Second end-202, Elevating part-203, Limiting part-204, First elastic structure-30, Pressing part-301, First connecting part-302, First elastic arm-303, First contact part-304, First support arm-305, Protruding rib-306, Second elastic structure-40, Pressing part-401, Second connecting part-402, Second elastic arm-403, Second contact part-404, Second support arm-405. Detailed Implementation

[0022] This application provides a spring sheet that achieves elastic force superposition within a limited space, increasing the force value of the spring sheet and solving the problem of the spring sheet being easily deformed during use.

[0023] The technical solution in this application is to solve the above-mentioned technical problems, and the overall approach is as follows:

[0024] A spring sheet includes a substrate. The two opposite ends of the substrate are 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. During operation, the pressure-applying portion presses against the second elastic structure, causing both elastic structures to deform simultaneously, providing a greater elastic force output. The second elastic structure supports the first elastic structure, preventing it from deforming or breaking due to excessive bending, thus enhancing the overall overload resistance of the spring sheet. Furthermore, the two elastic structures are stacked vertically, making full use of existing space without increasing the spring sheet's volume, and thus well-suited to the miniaturization requirements of high-precision equipment.

[0025] 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.

[0026] like Figures 1 to 5 The image shown is an embodiment of a spring clip according to this application:

[0027] A spring sheet 1 includes a substrate 20, on which there are opposing first end 201 and second end 202, the first end 201 is bent to form a first elastic structure 30, and the second end 202 is bent to form a second elastic structure 40.

[0028] The second elastic structure 40 is located below the first elastic structure 30. A pressure-applying part 301 is provided at the free end of the first elastic structure 30. When the first elastic structure 30 is pressed down, the pressure-applying part 301 presses against the second elastic structure 40, and the second elastic structure 40 provides elastic support for the first elastic structure 30. When the spring piece 1 is installed in the application scenario, the first elastic structure 30 deforms under force after contact with the other component, and the pressure-applying part 301 moves down and presses against the second elastic structure 40. The second elastic structure 40 also undergoes elastic deformation under force, and the stored elastic potential energy is fed back to the first elastic structure 30 through the pressure-applying part 301, allowing the spring piece 1 to output more positive force. When the spring piece 1 is subjected to greater pressure, the first elastic structure 30 is completely pressed against the second elastic structure 40, and the second elastic structure 40 provides rigid support, preventing the first elastic structure 30 from bending further. By cleverly utilizing the space between the first elastic structure 30 and the substrate 20 to set the second elastic structure 40, the volume of the spring piece 1 does not increase, and even a double-elastic structure spring piece will not occupy too much space.

[0029] 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 formed by bending the end of the substrate 20 upwards in the opposite direction. This flexible design of bending can effectively absorb some of the stress generated when the elastic arm deforms. The end of the connecting portion extends obliquely upwards to form an elastic arm. The elastic arm is a cantilever beam structure with a certain length and angle, responsible for generating contact pressure and rebound. The end of the elastic arm is the contact portion. The contact portion is an arc-shaped structure, which is a reliable electrical connection interface and force transmission point, responsible for transmitting external force to the elastic arm to deform it. The arc-shaped structure disperses the contact pressure. The other end of the contact portion continues to extend to form a support arm. The support arm can prevent overload damage and improve the overall structural stability of the spring piece 1. The first elastic arm 303, the first contact portion 304, and the first support arm 305 are provided with protruding ribs 306. The raised rib-306 can pierce the oxide layer on the contact surface, reducing contact resistance fluctuations; the original surface contact is transformed into point contact or line contact, improving conductivity reliability; the raised rib-306 is equivalent to a reinforcing rib, which can enhance product strength.

[0030] The aforementioned pressure-applying part 301 is a flat plate structure, formed by bending the first support arm 305 toward the first connecting part 302. There is no rigid connection between the second elastic structure 40 and the first elastic structure 30, and it is in a "waiting to be triggered" state. When the first elastic structure 30 is pressed down, the flat plate-shaped pressure-applying part 301 presses against the second contact part 404 located below it; the second elastic structure 40 deforms, and the resulting elastic force is superimposed on the first elastic structure 30, so that the entire spring piece 1 can generate a larger positive contact force under the same compression displacement, the force value is increased, and the rebound performance is excellent.

[0031] A pressing part 401 is provided at the free end of the second elastic structure 40. The pressing part 401 is a flat plate structure, formed by bending the second support arm 405 toward the second connecting part 402. The pressing part 401 has a similar structure to the pressure application part 301, both of which are formed by bending the support arm.

[0032] like Figures 1 to 4 As shown, the two sides of the substrate 20 are bent upwards and extended horizontally to form a support portion 203. The support portion 203 is located below the pressing portion 401 and near the second end 202, and the aforementioned pressing portion 401 abuts against the support portion 203. The top of the support portion 203 is a flat plate structure parallel to the substrate 20. When the second elastic structure 40 is pressed down, the pressing portion 401 abuts against the support portion 203 and applies a certain force to the support portion 203; the elastic potential energy generated by the deformation of the support portion 203 reacts to the second elastic structure 40. The first elastic structure 30, the second elastic structure 40, and the support portion 203 all have independent lever arms, supporting each other to achieve positive force superposition, effectively increasing the force value of the spring piece 1. The support portion 203 also plays a supporting role, preventing the spring piece 1 from being severely deformed.

[0033] like Figure 5 As shown, the raised part 203 can also be omitted, and the pressing part 401 directly abuts against the substrate 20. When the second elastic structure 40 is pressed down by the force of the first elastic structure 30, the pressing part 401 abuts against the substrate 20, and the substrate 20 is equivalent to a rigid support point. The two elastic structures bear the pressure together, which enhances the compressive strength and effectively prevents the elastic structure from breaking.

[0034] The two sides of the substrate 20 are bent upwards and extended horizontally to form limiting portions 204. The limiting portions 204 are located above the first connecting portion 302 and near the first end 201. The limiting portions 204 consist of two symmetrically designed L-shaped structures. One right-angled side of each L-shaped structure is bent upwards from the side of the substrate 20, while the other right-angled side is parallel to the substrate 20. The first connecting portion 302 is located within the limiting space formed by the substrate 20 and the L-shaped structures. The limiting portions 204 prevent the elastic structure from dislodging. The first elastic structure 30 abuts upwards against the limiting portions 204. The limiting portions 204 apply a certain pre-pressure to the first elastic structure 30, reducing errors generated during manufacturing and solving the material relaxation problem.

[0035] In summary, this utility model relates to a spring sheet with a dual elastic structure. The second elastic structure is located below the first elastic structure. During the operation of the spring sheet, both elastic structures deform, which can output a larger elastic force, increase the force value, enhance the overload resistance, and the volume of the spring sheet will not increase, resulting in high space utilization efficiency.

[0036] 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.

[0037] 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 clip, comprising a substrate, characterized in that, The first end of the substrate is bent to form a first elastic structure, and the second end of the substrate is bent to form a second elastic structure. The first end and the second end are opposite to each other, and the second elastic structure is located below the first elastic structure. A pressure-applying part is provided at the free end of the first elastic structure. When the first elastic structure is pressed down, the pressure-applying part presses against the second elastic structure, and the second elastic structure provides elastic support 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 flat plate structure, formed by bending the first support arm toward the first connecting part.

4. A spring clip according to claim 2, characterized in that, A pressing part is provided at the free end of the second elastic structure. The pressing part is a flat plate structure formed by bending the second support arm toward the second connecting part.

5. A spring clip according to claim 4, characterized in that, The pressing part abuts against the substrate.

6. A spring clip according to claim 4, characterized in that, The two sides of the substrate are bent upward and extended horizontally to form a raised section. The raised section is located below the pressing section and close to the second end. The pressing section abuts against the raised section.

7. A spring clip according to any one of claims 2 to 6, characterized in that, The two sides of the substrate are bent upward and extended horizontally to form a limiting portion, which is located above the first connecting portion and close to the first end.

8. A spring clip according to claim 7, characterized in that, The first elastic structure abuts upward against the limiting portion.

9. A spring clip according to claim 8, characterized in that, The first elastic arm, the first contact portion, and the first support arm are provided with protruding ribs.

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