Double-force-arm single-contact elastic sheet

Abstract

The utility model discloses a double-force-arm single-contact elastic sheet which comprises a substrate. A bending line extending in the transverse direction is arranged on the base plate; two bending positions are arranged on the bending line at intervals; a first branch force arm and a second branch force arm are formed by bending and extending from the same sides of the two bending positions; the free end of the first branch force arm and the free end of the second branch force arm intersect and are connected to form a combination part. And a contact point is arranged on the combination part. Through the springback support of the two branch force arms, the contact stress is dispersed, the springback performance of the elastic sheet is ensured, the contact reliability of the elastic sheet is obviously improved, the transverse width space of the elastic sheet is fully utilized, the assembly space is saved, and the practicability is strong.

Description

Technical Field

[0001] This utility model relates to the field of spring technology, and in particular to a double lever arm single contact spring. Background Technology

[0002] When designing metal springs, the lever arm length is limited by space constraints. In particular, a short lever arm significantly impacts the spring's elasticity. The lever arm length refers to the distance from the fixed point to the point of force application. When this distance is short, the spring generates a smaller restoring force when subjected to external forces, failing to provide sufficient elasticity. Insufficient elasticity can also lead to unstable contact between the spring and the contact point. Utility Model Content

[0003] To address the aforementioned technical problems, the purpose of this utility model is to propose a double-arm single-contact spring sheet. Through the rebound support of the two branch arms, the contact stress is dispersed, ensuring the rebound performance of the spring sheet, significantly improving the reliability of the spring sheet during contact, and making full use of the lateral width space of the spring sheet to save assembly space, thus having strong practicality.

[0004] The technical solution of this utility model is implemented as follows: a double-arm single-contact spring sheet includes a substrate; the substrate is provided with a bending line extending laterally; and two bending positions are provided at intervals on the bending line.

[0005] A first branch arm and a second branch arm are formed by bending and extending from the same side at the two bending positions; the free ends of the first branch arm and the free ends of the second branch arm intersect and connect to form a joint; the joint is provided with a contact point.

[0006] Furthermore, the substrate is provided with a cutout structure that cuts off the bending line; the two bending positions are located on opposite sides of the cutout structure.

[0007] Furthermore, the joint portion is bent and extended toward the side closer to the substrate to form a bent structure; a protruding structure is provided on the outer side of the bent structure; the contact point is formed on the protruding structure.

[0008] Furthermore, the protruding structure is formed by stamping.

[0009] Furthermore, the protruding structure has a first end located on the joint and a second end extending from the first end along the extension direction of the bending structure.

[0010] Furthermore, the substrate is provided with fixing holes that penetrate the substrate.

[0011] Furthermore, at least two fixing holes are arranged at intervals in the lateral direction.

[0012] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0013] This invention utilizes the cooperative use of a first branch lever arm and a second branch lever arm, which intersect and connect to form a joint, providing elastic support to the joint. The rebound support of the first and second branch lever arms disperses the stress applied to the joint, ensuring the rebound performance of the spring and significantly improving the reliability of the spring contact. By bending along a laterally extending bending line, the first and second branch lever arms are spaced apart laterally, fully utilizing the lateral width of the spring, saving assembly space, and demonstrating strong practicality. Attached Figure Description

[0014] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0015] Figure 1 This is a three-dimensional structural diagram of the overall structure of this utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the structure from below;

[0017] Figure 3 for Figure 1 A side view structural diagram;

[0018] Wherein: 1. Substrate; 11. Bending line; 12. Fixing hole; 13. Bending position; 14. Hollow structure; 2. First branch lever arm; 3. Second branch lever arm; 4. Joint; 5. Bending structure; 51. Protrusion structure. Detailed Implementation

[0019] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0020] like Figure 1-3The illustration shows a double-arm single-contact spring sheet according to this embodiment, which is integrally formed from metal material. The spring sheet includes a substrate 1. A bending line 11 extending laterally is arranged on the substrate 1. A cutout structure 14 is machined on the substrate 1, interrupting the bending line 11. Two bending positions 13 are reserved at intervals along the bending line 11. The two bending positions 13 are located on opposite sides of the cutout structure 14. The substrate 1 can be bent along the bending line 11 using a bending device. When bending along the bending line 11, the two bending positions 13 bend simultaneously. Through the above structural design, a first branch arm 2 and a second branch arm 3 are formed extending from the same side of the two bending positions 13. The free ends of the first branch arm 2 and the second branch arm 3 intersect and connect to form a joint 4, connecting the first branch arm 2 and the second branch arm 3 to form an integral structure. The joint 4 has a rebound force due to the support and rebound of the first branch arm 2 and the second branch arm 3. Contact points are arranged on the aforementioned joint 4. The spring contacts the component or other object through the joint 4.

[0021] A bent structure 5 is formed on the joint portion 4, extending towards the side closer to the substrate 1. A protruding structure 51 is formed on the outer surface of the bent structure 5 facing away from the substrate 1. The aforementioned contact point is formed on the protruding structure 51. The protruding structure 51 improves the contact effect. In this embodiment, the protruding structure 51 is formed by stamping from the inner side of the bent structure 5 outward. The protruding structure 51 is a linear structure, having a first end located on the joint portion 4 and a second end extending from the first end along the extending direction of the bent structure 5.

[0022] The substrate 1 has through-holes 12 machined into it. By arranging the positions of the through-holes 12 appropriately, the longitudinal dimension of the substrate 1 can be reduced. Specifically, there are two or more through-holes 12, which are spaced apart in the transverse direction.

[0023] During assembly, the object being contacted comes into contact with the protruding structure 51 on the joint portion 4 of the spring piece. The first branch arm 2 and the second branch arm 3 intersect and connect to form the joint portion 4, providing elastic support for it. Through the spring-loaded support of the first branch arm 2 and the second branch arm 3, the stress applied to the joint portion 4 is dispersed, ensuring the spring piece's rebound performance and significantly improving the reliability of the spring piece during contact. By bending along the laterally extending bending line 11, the first branch arm 2 and the second branch arm 3 are spaced apart laterally, fully utilizing the lateral width space of the spring piece, saving assembly space, and enhancing practicality.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A dual force arm single contact spring, comprising a substrate; characterized in that: The substrate is provided with a bending line extending in the transverse direction; two bending positions are provided on the bending line at intervals; First and second branch force arms are formed by bending extension from the same side of the two bending positions; the free ends of the first and second branch force arms are connected to form a joint; a contact point is provided on the joint.

2. A dual-arm single-contact spring according to claim 1, characterized in that: The substrate is provided with a hollow structure intersecting the bending line; the two bending positions are arranged on opposite sides of the hollow structure.

3. The dual-arm single-contact spring of claim 1, wherein: The joint is bent to extend towards the substrate to form a bending structure; a protruding structure is provided on the outer side of the bending structure; the contact point is formed on the protruding structure.

4. A dual-arm single-contact spring according to claim 3, characterized in that: The protruding structure is formed by stamping.

5. A dual-arm single-contact spring according to claim 3, characterized in that: The protruding structure has a first end on the joint, and a second end extending from the first end along the extension direction of the bending structure.

6. A dual-arm single-contact spring according to claim 1, wherein: The substrate is provided with a fixing hole passing through the substrate.

7. The dual-arm single-contact spring of claim 1, wherein: At least two fixing holes are arranged at intervals in the transverse direction.

Images