Composite contact bump

Abstract

This utility model relates to a composite contact spring in the field of spring contacts, comprising a substrate. One end of the substrate is bent to form a support arm, a transition arm, a spring arm, and a pressing arm in sequence. The middle of the spring arm is bent to form an elastic gap, allowing the spring arm to provide elastic reset to the pressing arm. A limit arm is provided on the side of the support arm. The end of the limit arm extending towards the spring arm is bent to form a limiting part that penetrates the elastic gap. The inner side of the pressing arm is stamped to form an outwardly protruding first contact part. The middle of the first contact part is provided with a protruding second contact part. This utility model forms a composite contact structure through the first and second contact parts, improving the user experience, stability, and reliability of the pressing contact. By bending the end of the limit arm to form a limiting part that penetrates the elastic gap, the problem of poor contact caused by excessive deformation of the spring arm is avoided. Furthermore, the limiting part can provide limiting feedback to the spring arm, improving the user experience of the pressing contact.

Description

Technical Field

[0001] This utility model relates to the field of spring sheets, specifically to composite contact point spring sheets. Background Technology

[0002] Metal springs, as important mechanical components, are widely used in various mechanical equipment and electronic products. In electronic devices, metal springs are a common and crucial component, playing a particularly important role in relays.

[0003] Metal springs can be used to bridge gaps in circuits or between isolated circuits, allowing current to flow and enabling the circuit to perform its intended function. Metal springs can also be used to connect power lines or data lines for power or electronic data transmission. Existing metal springs mainly consist of a metal substrate, an elastic arm, and contact points. The elastic arm is a key part extending from the metal substrate, possessing a certain degree of elasticity and restoring force. The contact points are generally located at the ends of the elastic arm and are used for contact with other components.

[0004] However, the use of existing metal springs still has certain defects. Existing springs include positive downward pressing contact and side spring pressing contact, etc. Among them, the pressing contact structure of the existing side spring pressing contact is relatively simple, and the pressing contact part is usually a single point contact. The single point contact easily leads to the pressure being concentrated in a limited area. After long-term use, the contact surface is prone to wear due to friction, and the pressing contact part has a poor user experience, thus affecting the stability and reliability of the pressing contact. At the same time, the elastic gap of the elastic arm of the existing side spring pressing lacks an effective limiting structure. Excessive pressing will cause the elastic arm to deform or the contact part to shift, resulting in poor contact and affecting the structural reliability and stability of the pressing contact. Utility Model Content

[0005] The purpose of this invention is to address the above-mentioned deficiencies by providing a composite contact point spring sheet, thereby solving the technical problems in the background art of how to provide a pressing contact effect for the side spring of the spring sheet, and how to ensure the deformation limit of the elastic arm under pressure, thus improving the reliability and stability of the pressing contact and elastic limit.

[0006] The objective of this utility model is achieved through the following means:

[0007] A composite contact spring includes a substrate. One end of the substrate is bent to form a support arm, a transition arm, a spring arm, and a pressing arm in sequence. The end of the support arm away from the substrate is bent to connect to a filter arm. The transition arm extends horizontally with the substrate. The spring arm is disposed between the transition arm and the pressing arm, and the middle part of the spring arm is bent to form an elastic gap, so that the spring arm can provide elastic reset to the pressing arm. A limiting arm is provided on the side of the support arm. The limiting arm extends towards the spring arm by bending, and the end of the limiting arm extending towards the spring arm is bent to form a limiting part that penetrates the elastic gap, so that the limiting part can limit the elastic gap of the spring arm. The inner side of the pressing arm is stamped to form an outwardly protruding first contact part, and the middle part of the first contact part is provided with a protruding second contact part.

[0008] Furthermore, as described above, one end of the substrate is connected to the support arm via a bending portion, and the support arm and the substrate are vertically arranged so that the support arm and the substrate are distributed in an "L" shape.

[0009] The vertical bending of the base plate and the support arm forms an "L" shape, which enhances the connection strength between the support arm and the base plate, avoids pressing displacement caused by structural loosening, and improves the overall stability of the structure, providing a more stable support foundation for the elastic arm and the pressing arm.

[0010] Furthermore, as described above, the outer side of the support arm is stamped with a through positioning hole, which is used to match and position it with the external mounting structure.

[0011] Furthermore, as described above, the limiting arm is disposed on the side of the support arm, and there are two limiting arms, which are symmetrically distributed and extend toward the elastic arm. The inner sides of the two limiting arms are bent to form a limiting part, which extends toward the elastic gap.

[0012] Two symmetrically distributed limiting arms extend into the elastic gap through the limiting part formed by bending, which physically limits the deformation range of the elastic arm, effectively avoiding excessive deformation and displacement of the elastic arm when excessively pressed, and improving the structural stability and service life of the pressing contact.

[0013] Furthermore, as described above, one end of the elastic arm is connected to the filter arm, and the other end of the elastic arm is connected to the pressing arm. The middle part of the elastic arm is bent to form a bending elastic part, so that the elastic arm is bent into a "U" shape.

[0014] The elastic arm forms an elastic deformation area through a "U"-shaped bend in the middle, which makes the elastic stress distribution of the elastic arm more uniform, enhances the rebound force when pressing, avoids fatigue fracture caused by local stress concentration, and at the same time, the "U"-shaped structure provides a smoother elastic transition, enhances the feedback effect of elastic pressing, and ensures the service life and pressing stability of the elastic arm.

[0015] Specifically, the U-shaped elastic arm creates an elastic gap inside, and a limiting part is set within the elastic gap to prevent excessive pressure on the U-shaped elastic arm from affecting its service life.

[0016] Furthermore, as described above, the pressing arm extends obliquely toward the substrate from the end of the elastic arm by bending, and the end of the pressing arm away from the elastic arm is formed into an elastic support arm by bending, and the elastic support arm extends toward the elastic arm by bending.

[0017] The pressing arm, formed by bending the end into an elastic support arm, works in synergy with the elastic arm to provide elastic support during pressing. This increases the elastic cushioning during the pressing process, making the pressing action smoother and the rebound faster. It avoids the stiffness caused by elastic support and improves the user experience and contact stability of the side-pressing mechanism.

[0018] Furthermore, as described above, a "V" shape is formed between the pressing arm and the elastic support arm.

[0019] The "V" shaped structure disperses the force during pressing through angle design, avoiding local stress concentration, while maintaining effective support of the elastic arm for the pressing arm, enhancing the structural strength of the pressing arm, further improving the reliability of pressing contact, enhancing the pressing and rebound stability of the side spring, and achieving a stable rebound effect through the "U" shaped elastic arm, thus improving practicality.

[0020] Furthermore, as described above, the first contact portion extends along the outer side of the pressing arm towards the elastic support arm, and the second contact portion is disposed in the middle of the first contact portion, so that the first contact portion and the second contact portion form a double-layer contact structure.

[0021] By forming a double-layer contact structure through the first contact portion extending outward from the outside of the pressing arm and the second contact portion protruding in the middle, the contact pressure is dispersed, the effective contact area is expanded, the problem of local wear and pressure concentration caused by single-point contact is avoided, the stability and durability of the contact are improved, and the technical defects of easy wear and poor reliability in the prior art are solved.

[0022] Furthermore, as described above, the side of the substrate is formed with multiple welding portions by bending, and welding ports are opened on the side of the substrate.

[0023] The multiple welding parts and welding joints formed by bending on the side of the substrate facilitate the stable connection between the spring and the external base or other components, improve the assembly reliability and usage stability of the overall structure, and ensure the firmness of the spring installation connection.

[0024] The beneficial effects of this utility model are as follows: By stamping an outwardly protruding first contact part on the inner side of the pressing arm and setting a protruding second contact part in the middle of the first contact part, a composite contact structure is formed, which effectively disperses the contact pressure during pressing, avoids the pressure concentration problem caused by single-point contact, reduces friction and wear of the contact surface during long-term use, and improves the user experience, stability and reliability of the pressing contact. At the same time, by setting a limiting arm extending towards the elastic arm on the side of the support arm and bending the end of the limiting arm to form a limiting part that penetrates the elastic gap, the limiting part can effectively limit the elastic gap of the elastic arm. When the pressing arm undergoes elastic deformation during pressing, it prevents excessive pressing from causing abnormal deformation of the elastic arm or displacement of the contact part, avoiding poor contact problems caused by excessive deformation of the elastic arm. In addition, the setting of the limiting part can provide limiting feedback to the elastic arm, ensuring the controllability of the deformation of the elastic arm during the pressing contact process and improving the user experience of the pressing contact. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure in the first direction of this embodiment;

[0026] Figure 2 This is a schematic diagram of the second-direction three-dimensional structure of this embodiment;

[0027] Figure 3 This is a schematic diagram of the third-dimensional structure of this embodiment;

[0028] Figure 4 This is a cross-sectional view of this embodiment;

[0029] The reference numerals in the figure are as follows: 1-substrate, 2-support arm, 3-transition arm, 4-elastic arm, 5-pressing arm, 6-elastic gap, 7-limiting arm, 8-limiting part, 9-first contact part, 10-second contact part, 11-bending part, 12-bending elastic part, 13-elastic support arm, 14-welding part, 15-welding joint. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0031] To make the technical problem to be solved, the technical solution and the beneficial effects of this utility model clearer, the following describes the solution in further detail with reference to the accompanying drawings and embodiments.

[0032] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this scheme and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] In this embodiment, refer to Figures 1-4 The composite contact spring, specifically implemented therein, includes a substrate 1. One end of the substrate 1 is bent to form a support arm 2, a transition arm 3, an elastic arm 4, and a pressing arm 5 in sequence. The end of the support arm 2 away from the substrate 1 is bent to connect to a filter arm. The transition arm 3 extends horizontally to the substrate 1. The elastic arm 4 is disposed between the transition arm 3 and the pressing arm 5, and the middle part of the elastic arm 4 is bent to form an elastic gap 6, so that the elastic arm 4 can provide elastic reset to the pressing arm 5. A limiting arm 7 is provided on the side of the support arm 2. The limiting arm 7 extends toward the elastic arm 4 by bending, and the end of the limiting arm 7 extending toward the elastic arm 4 is bent to form a limiting part 8 that penetrates the elastic gap 6, so that the limiting part 8 can limit the elastic gap 6 of the elastic arm 4. The inner side of the pressing arm 5 is stamped to form an outwardly protruding first contact part 9, and the middle part of the first contact part 9 is provided with a protruding second contact part 10.

[0034] Specifically, in this embodiment, the spring is integrally formed.

[0035] One end of the base plate 1 is connected to the support arm 2 via a bending portion 11. The support arm 2 and the base plate 1 are vertically arranged, forming an "L"-shaped distribution between them. The vertical bending of the base plate 1 and the support arm 2 to form an "L"-shaped structure enhances the connection strength between the support arm 2 and the base plate 1, preventing pressure shifting due to structural loosening. It also improves the overall structural stability, providing a more stable support foundation for the elastic arm 4 and the pressing arm 5.

[0036] The outer side of the support arm 2 is stamped with a through positioning hole (not shown), which is used to match and position with the external mounting structure.

[0037] The limiting arms 7 are disposed on the side of the support arm 2. There are two limiting arms 7, which are symmetrically distributed and extend towards the elastic arm 4. The inner surfaces of the two limiting arms 7 are bent to form limiting parts 8, which extend into the elastic gap 6. The two symmetrically distributed limiting arms 7 extend into the elastic gap 6 through the limiting parts 8 formed by bending, physically limiting the deformation range of the elastic arm 4, effectively preventing excessive deformation and displacement of the elastic arm when excessively pressed, and improving the structural stability and service life of the pressing contact.

[0038] Specifically, when the elastic arm 4 is squeezed, the limiting part 8 undergoes elastic compression deformation and can contact the limiting part 8. When it contacts the limiting part 8, the elastic arm 4 can no longer be elastically compressed, thus limiting the elastic arm 4. The setting of the limiting part 8 can make the elastic arm 4 produce a limiting feedback pressing experience, enhancing the user experience and the service life of the pressing.

[0039] One end of the elastic arm 4 is connected to the filter arm, and the other end is connected to the pressing arm 5. The middle of the elastic arm 4 is bent to form a bending elastic section 12, making the elastic arm 4 bend into a "U" shape. The "U"-shaped bend in the middle of the elastic arm 4 creates an elastic deformation area, making the elastic stress distribution of the elastic arm 4 more uniform, enhancing the rebound force during pressing, and avoiding fatigue fracture caused by localized stress concentration. At the same time, the "U"-shaped structure provides a smoother elastic transition, enhancing the feedback effect of elastic pressing and ensuring the service life and pressing stability of the elastic arm.

[0040] Specifically, the U-shaped elastic arm 4 forms an elastic gap 6 inside, and a limiting part 8 is set in the elastic gap 6 to prevent the U-shaped elastic arm 4 from being over-pressed and affecting its service life.

[0041] The U-shaped elastic arm 4 ensures the pressing and resetting elastic effect of the pressing arm 5, so that one end of the U-shaped elastic arm 4 is connected to the transition arm 3, and the other end of the U-shaped elastic arm 4 is connected to the pressing arm 5.

[0042] The pressing arm 5 extends obliquely towards the base plate 1 from the end of the elastic arm 4 by bending, and the end of the pressing arm 5 away from the elastic arm 4 is bent to form an elastic support arm 13, which extends towards the elastic arm 4 by bending. The elastic support arm 13 formed by bending the end of the pressing arm 5 forms a cooperative elastic support with the elastic arm 4 when pressing, which increases the elastic buffer during the pressing process, making the pressing action smoother and the rebound faster, avoiding the stiffness of pressing caused by elastic support, and improving the user experience and contact stability of the side-spring pressing.

[0043] The pressing arm 5 and the elastic support arm 13 form a "V" shape. The "V" shape structure disperses the force during pressing through angle design, avoiding local stress concentration, while maintaining effective support of the elastic support arm 13 for the pressing arm 5, enhancing the structural strength of the pressing arm 5, further improving the reliability of the pressing contact, enhancing the pressing and rebound stability of the side spring, and achieving a stable rebound effect through the "U" shaped elastic lever arm, thus improving practicality.

[0044] The first contact portion 9 extends along the outer side of the pressing arm 5 towards the elastic support arm 13, and the second contact portion 10 is disposed in the middle of the first contact portion 9, so that the first contact portion 9 and the second contact portion 10 form a double-layer contact structure. By forming a double-layer contact structure through the first contact portion 9 extending on the outer side of the pressing arm 5 and the second contact portion 10 protruding in the middle, the contact pressure is dispersed, the effective contact area is expanded, the problem of local wear and pressure concentration caused by single-point contact is avoided, the stability and durability of the contact are improved, and the technical defects of easy wear and poor reliability in the prior art are solved.

[0045] The side of the substrate 1 is formed with multiple welding portions 14 by bending, and welding ports 15 are opened on the side of the substrate 1. The multiple welding portions 14 and welding ports 15 formed by bending on the side of the substrate 1 facilitate the stable connection between the spring and the external base or other components, improve the assembly reliability and usage stability of the overall structure, and ensure the firmness of the spring installation connection.

[0046] The specific usage process in this embodiment is as follows:

[0047] The spring is paired with the external connection structure and fixed with the external welding end by soldering through the welding part 14 on the substrate 1. A first contact part 9 and a second contact part 10 protruding outward are stamped on the inner side of the pressing arm 5 to form a composite contact structure, which effectively disperses the contact pressure during pressing. The protrusion of the second contact part 10 enhances the user experience of pressing. At the same time, the extension of the first contact part 9 avoids the pressure concentration problem caused by single-point contact, reduces the friction and wear of the contact surface during long-term use, and improves the user experience, stability and reliability of the pressing contact. When the second contact part 10 is pressed, the pressing arm 5 generates force towards the elastic arm 4. The compression deformation causes the elastic arm 4 to undergo elastic deformation. By setting a limiting arm 7 extending towards the elastic arm 4 on the side of the support arm 2, and bending the end of the limiting arm 7 to form a limiting part 8 that penetrates the elastic gap 6, the limiting part 8 can effectively limit the elastic gap 6 of the elastic arm 4. When the pressing arm 5 presses, the elastic arm 4 undergoes elastic deformation, preventing excessive pressing and abnormal deformation of the elastic arm or displacement of the contact part, avoiding poor contact problems caused by excessive deformation of the elastic arm, and the setting of the limiting part 8 can provide limiting feedback to the elastic arm 4, ensuring the controllability of the deformation of the elastic arm during the pressing contact process, and improving the pressing contact user experience.

[0048] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A composite contact spring sheet, comprising a substrate, characterized in that: One end of the substrate is formed by bending to sequentially form a support arm, a transition arm, a spring arm, and a pressing arm. The end of the support arm away from the substrate is connected to the filter arm by bending. The transition arm extends horizontally with the substrate. The spring arm is disposed between the transition arm and the pressing arm, and the middle part of the spring arm is bent to form an elastic gap, so that the spring arm can provide elastic reset to the pressing arm. A limiting arm is provided on the side of the support arm. The limiting arm extends into the spring arm by bending, and the end of the limiting arm extending into the spring arm is bent to form a limiting part that penetrates the elastic gap, so that the limiting part can limit the elastic gap of the spring arm. The inner side of the pressing arm is formed by stamping to form an outwardly protruding first contact part, and the middle part of the first contact part is provided with a protruding second contact part.

2. The composite contact point spring according to claim 1, characterized in that: One end of the substrate is connected to the support arm through a bending portion. The support arm and the substrate are vertically arranged, so that the support arm and the substrate are distributed in an "L" row.

3. The composite contact point spring sheet according to claim 1, characterized in that: The limiting arm is provided on the side of the support arm. There are two limiting arms, which are symmetrically distributed and extend towards the elastic arm. The inner sides of the two limiting arms are bent to form a limiting part, which extends towards the elastic gap.

4. The composite contact point spring sheet according to claim 1, characterized in that: One end of the elastic arm is connected to the filter arm, and the other end of the elastic arm is connected to the pressing arm. The middle part of the elastic arm is bent to form a bending elastic part, so that the elastic arm is bent into a "U" shape.

5. The composite contact point spring sheet according to claim 1, characterized in that: The pressing arm extends obliquely toward the substrate from the end of the elastic arm by bending, and the end of the pressing arm away from the elastic arm is formed into an elastic support arm by bending, and the elastic support arm extends toward the elastic arm by bending.

6. The composite contact spring according to any one of claims 1-5, characterized in that: The pressing arm and the elastic support arm form a "V" shape.

7. The composite contact point spring according to claim 5, characterized in that: The first contact portion extends along the outer side of the pressing arm to the elastic support arm, and the second contact portion is disposed in the middle of the first contact portion, so that the first contact portion and the second contact portion form a double-layer contact structure.

8. The composite contact spring according to any one of claims 1-5, characterized in that: The substrate has multiple welding parts formed on its side by bending, and welding ports are opened on the side of the substrate.

Images