Contact spring

Abstract

A contact elastic sheet comprises a base (1), and the upper end of the base (1) is connected with an elastic sheet (2) protruding towards the front side. The elastic sheet (2) and the base (1) form a semi-enclosed structure; wherein the base (1) is of a box-type structure with openings in the front and the back; the upper end face of the base (1) is a suction face (11), the left end face and the right end face are supporting faces (12), and the lower end face is a welding face (13). And the welding surface (13) is provided with a longitudinal groove (14), so that the welding surface (13) is divided into a left half and a right half. The elastic piece (2) is provided with an elastic force arm (21) protruding upwards. A protruding contact part (22) is arranged at the protruding position of the front end of the elastic piece (2). The utility model has the beneficial effects that: 1, the structural strength is high, and the service life of the elastic sheet is long; the structural strength is high, the gravity center is stable, surface mounting is convenient, and automatic production is easy;

Description

Technical Field

[0001] The utility model relates to the field of electronic technology, in particular to a contact spring. Background Art

[0002] Printed Circuit Board (PCB) is commonly used in electronic devices. PCB technology is developing rapidly under the current huge market demand. When PCB needs to connect electronic components, it is necessary to weld contact terminals and contact springs. The applicant found that the contact springs currently on the market have many problems, such as: 1. Low strength and short service life; 2. Irregular shape, which is not conducive to machine automation production.

[0003] Therefore, it is urgent to develop a contact spring with high strength, long service life and easy automated production. Utility Model Content

[0004] The utility model aims to solve one of the above technical problems at least to a certain extent.

[0005] Therefore, the purpose of the utility model is to provide a contact spring with high strength, long service life and easy automatic production.

[0006] To achieve the above-mentioned purpose, an embodiment of the utility model discloses a contact spring, comprising: a base 1, wherein the upper end of the base 1 is connected to a spring 2 protruding toward the front side; the spring 2 and the base 1 form a semi-enclosed structure; wherein the base 1 is a box-type structure with openings at the front and back; the upper end surface of the base 1 is a suction surface 11, the left and right end surfaces are support surfaces 12, and the lower end surface is a welding surface 13.

[0007] In addition, the contact spring according to the above technical solution of the utility model may also have the following additional technical features:

[0008] Optionally, the welding surface 13 is provided with a longitudinal groove 14 so as to divide the welding surface 13 into left and right halves.

[0009] Optionally, the elastic sheet 2 is provided with an elastic force arm 21 protruding upward.

[0010] Optionally, a raised contact portion 22 is provided at a raised portion at the front end of the spring piece 2 .

[0011] The beneficial effects of the utility model are: 1. The structure has high strength and the spring piece has a long service life; 2. The structure has high strength, the center of gravity is stable, and it is convenient to patch and easy to automate production. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional diagram of a contact spring provided by an embodiment of the utility model;

[0013] Figure 2 It is a side view of a contact spring provided by an embodiment of the utility model.

[0014] Reference numerals:

[0015] 1-base, 11-suction surface, 12-support surface, 13-welding surface, 14-groove, 2-spring, 21-elastic force arm, 22-contact portion. DETAILED DESCRIPTION

[0016] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or components / elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0017] Figure 1 It is a three-dimensional diagram of a contact spring provided by an embodiment of the utility model; Figure 2 FIG. 1 is a side view of a contact spring provided by an embodiment of the present utility model. Figure 1-2 As shown, the contact spring comprises: a base 1, the upper end of the base 1 is connected with a spring 2 protruding toward the front side; the spring 2 and the base 1 form a semi-enclosed structure; wherein the base 1 is a box-type structure with openings at the front and back; the upper end surface of the base 1 is a suction surface 11, the left and right end surfaces are support surfaces 12, and the lower end surface is a welding surface 13.

[0018] Specifically, the spring 2 is bent and convex toward the front side, so that it is easy to press into contact from the front side when connecting. The base 1 of the box-type structure is divided into an upper suction surface 11, left and right support surfaces 12 and a lower welding surface 13 in terms of function; the upper end surface is a box-type structure, and the flat suction surface 11 is convenient for the placement machine to pick up and suck; the left and right side surfaces increase the strength of the upper spring fixed end to prevent the spring from being slightly stressed even if the entire product is deformed; the lower end surface is used for welding, and the product can be welded to the circuit board to form an electrical circuit.

[0019] According to the contact spring of the utility model, the base is a box-type structure, and the spring force arm is suspended in the air to form a semi-enclosed structure, so that the product can be made very small while ensuring the high strength of the overall structure and the long service life of the spring; the center of gravity is stable, which is convenient for the placement machine to absorb and easy to automate production.

[0020] According to an embodiment of the present invention, the welding surface 13 is provided with a longitudinal groove 14 so as to divide the welding surface 13 into left and right halves.

[0021] Specifically, the base 1 of the box-type structure can be formed by stamping and bending, which greatly improves production efficiency. At this time, the welding surface 13 can be regarded as a welding foot.

[0022] According to an embodiment of the present invention, the spring piece 2 is provided with an elastic force arm 21 protruding upward.

[0023] Specifically, after the upwardly protruding elastic force arm 21 is provided, the spring sheet 2 can be pressed into contact and connected from the upper side in addition to the front side.

[0024] According to an embodiment of the present invention, a raised contact portion 22 is provided at the raised portion of the front end of the spring piece 2 .

[0025] Specifically, the contact portion 22 is a secondary protrusion, which is beneficial for electrical connection of the device.

[0026] The above embodiments are preferred implementation schemes of the present application. In addition, the present application may also be implemented in other ways. Any obvious replacement without departing from the concept of the present application is within the protection scope of the present application.

Claims

1. A contact spring, characterized in that: include: A base (1), wherein the upper end of the base (1) is connected to a spring sheet (2) protruding toward the front; the spring sheet (2) and the base (1) form a semi-enclosed structure; The base (1) is a box-type structure with openings at the front and rear ends; the upper end surface of the base (1) is a suction surface (11), the left and right end surfaces are support surfaces (12), and the lower end surface is a welding surface (13).

2. A contact spring according to claim 1, characterized in that: The welding surface (13) is provided with a longitudinal groove (14) so ​​that the welding surface (13) is divided into left and right halves.

3. The contact spring according to claim 1, characterized in that: The elastic sheet (2) is provided with an elastic force arm (21) protruding upwards.

4. The contact spring according to claim 1, characterized in that: A raised contact portion (22) is provided at the raised front end of the spring piece (2).

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