PCB elastic sheet capable of preventing excessive deformation

Abstract

The utility model belongs to the technical field of elastic sheets, and discloses an anti-excessive-deformation PCB elastic sheet which comprises a welding part used for being connected with a circuit board in a welding mode, the tail end of the welding part is bent inwards to form a first buffering part, the tail end of the first buffering part is bent outwards in an S shape and extends to form an elastic part, and the tail end of the elastic part is bent towards the welding part to form an abutting part. The head end of the welding part is bent towards the inner side of the first buffering part to form a second buffering part. Through the arrangement of the first buffering part, the second buffering part and the abutting part, when the upper portion of the abutting part is subjected to pressure towards the welding part, the elastic part generates compression deformation, the abutting part moves towards the welding part, and when the pressure is close to a preset threshold value, the first buffering part and the second buffering part sequentially generate deformation and abut against each other; when the pressure is larger than or equal to the preset threshold value, the tail end of the abutting part can abut against the buffering part, further deformation of the elastic part can be limited, permanent plastic deformation of the elastic part is effectively prevented, and the service life of the PCB elastic piece is further prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of springs, and more specifically, to a PCB spring that prevents excessive deformation. Background Art

[0002] With the advancement of science and technology and the development of the economy, electronic devices such as mobile phones and tablets have become indispensable daily necessities for people. These electronic devices have been widely integrated into people's daily lives, providing great convenience for people's lives and work, and enriching people's lives. PCB shrapnel used for electrical connections is one of the essential components in electronic devices.

[0003] When subjected to external forces, existing PCB springs are prone to permanent deformation due to their inherent design, which makes them unable to withstand the load during use. This leads to a high failure rate and reduced positive force at the contact point. When the applied pressure is too great, the elastic part will be over-compressed, causing plastic deformation of the PCB spring. Utility Model Content

[0004] In order to solve the above problems, the present application provides a PCB spring that prevents excessive deformation.

[0005] The present application provides a PCB spring that prevents excessive deformation, which adopts the following technical solution:

[0006] A PCB spring piece for preventing excessive deformation includes a soldering portion for soldering to a circuit board, wherein the end of the soldering portion is bent inwardly to form a first buffer portion, the end of the first buffer portion is bent outwardly in an S-shape and extends to form an elastic portion, the end of the elastic portion is bent toward the soldering portion to form an abutment portion, and the head end of the soldering portion is bent toward the inside of the first buffer portion to form a second buffer portion.

[0007] Furthermore, the first buffer portion includes a first vertical plate and a first parallel plate, the first vertical plate is perpendicular to the welding portion, and the first parallel plate is parallel to the welding portion.

[0008] Furthermore, the second buffer portion includes a second vertical plate and a second parallel plate, the second vertical plate is perpendicular to the welding portion, and the second parallel plate is parallel to the welding portion.

[0009] Furthermore, the length of the second vertical plate is 4 / 5 of that of the first vertical plate, and the length of the second parallel plate is 2 / 3 of that of the first parallel plate.

[0010] Furthermore, the bending angle of the abutting portion is 90°, and the extending length of the abutting portion toward the welding portion is 1 / 4 to 1 / 2 of the total thickness of the elastic portion.

[0011] Furthermore, the PCB spring is made of beryllium copper, and the outer sides of the elastic portion and the abutting portion are both provided with a nickel-plated layer.

[0012] In summary, this application includes at least one of the following beneficial technical effects:

[0013] The present application provides a first buffer portion, a second buffer portion, and an abutting portion. When the abutting portion is subjected to pressure toward the welding portion, the elastic portion is compressed and deformed, and the abutting portion moves toward the welding portion. When the pressure approaches a preset threshold, the first buffer portion and the second buffer portion are deformed in sequence and abut against each other. When the pressure is greater than or equal to the preset threshold, the end of the abutting portion can abut against the buffer portion, thereby limiting further deformation of the elastic portion, thereby effectively preventing permanent plastic deformation of the elastic portion and further improving the service life of the PCB spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of this application;

[0015] Figure 2 This is a side view of the application.

[0016] Description of the numbers in the figure:

[0017] 1. Welding portion; 2. First buffer portion; 21. First vertical plate; 22. First parallel plate; 3. Elastic portion; 4. Abutment portion; 5. Second buffer portion; 51. Second vertical plate; 52. Second parallel plate. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; it is obvious that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0019] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0021] Example 1:

[0022] The present application is further described in detail below with reference to the accompanying drawings.

[0023] An embodiment of the present application discloses a PCB spring piece that prevents excessive deformation, including a soldering portion 1 for soldering to a circuit board. The end of the soldering portion 1 is bent inward to form a first buffer portion 2, and the end of the first buffer portion 2 is bent outward in an S-shape and extends to form an elastic portion 3. The end of the elastic portion 3 is bent toward the soldering portion 1 to form an abutment portion 4. The head end of the soldering portion 1 is bent toward the inside of the first buffer portion 2 to form a second buffer portion 5.

[0024] Preferably, the first buffer portion 2 includes a first vertical plate 21 and a first parallel plate 22. The first vertical plate 21 is perpendicular to the welding portion 1, and the first parallel plate 22 is parallel to the welding portion 1. The second buffer portion 5 includes a second vertical plate 51 and a second parallel plate 52. The second vertical plate 51 is perpendicular to the welding portion 1, and the second parallel plate 52 is parallel to the welding portion 1. The length of the second vertical plate 51 is 4 / 5 of the length of the first vertical plate 21, and the length of the second parallel plate 52 is 2 / 3 of the length of the first parallel plate 22.

[0025] Preferably, the bending angle of the abutting portion 4 is 90°, and the extending length of the abutting portion 4 toward the welding portion 1 is 1 / 4 to 1 / 2 of the total thickness of the elastic portion 3 .

[0026] Preferably, the PCB spring piece is made of beryllium copper, and the outer sides of the elastic portion 3 and the abutting portion 4 are both provided with a nickel-plated layer to improve wear resistance, corrosion resistance and conductivity performance.

[0027] The implementation principle of a PCB spring to prevent excessive deformation in the embodiment of the present application is as follows:

[0028] The present application provides the first buffer portion 2, the second buffer portion 5 and the abutting portion 4. When the abutting portion 4 is subjected to pressure toward the welding portion 1, the elastic portion 3 is compressed and deformed, and the abutting portion 4 moves toward the welding portion 1. When the pressure approaches a preset threshold, the first buffer portion 2 and the second buffer portion 5 are deformed in turn and abut against each other. When the pressure is greater than or equal to the preset threshold, the end of the abutting portion 4 can abut the buffer portion, which can limit the elastic portion 3 from further deformation, thereby effectively preventing the elastic portion 3 from permanent plastic deformation, and further improving the service life of the PCB spring.

[0029] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A PCB shrapnel for preventing excessive deformation, characterized in that: The invention comprises a soldering portion (1) for soldering to a circuit board, wherein the end of the soldering portion (1) is bent inwardly to form a first buffer portion (2), the end of the first buffer portion (2) is bent outwardly in an S-shape to extend to form an elastic portion (3), the end of the elastic portion (3) is bent toward the soldering portion (1) to form an abutting portion (4), and the head end of the soldering portion (1) is bent toward the inside of the first buffer portion (2) to form a second buffer portion (5).

2. The PCB spring for preventing excessive deformation according to claim 1, characterized in that: The first buffer portion (2) comprises a first vertical plate (21) and a first parallel plate (22), wherein the first vertical plate (21) is perpendicular to the welding portion (1), and the first parallel plate (22) is parallel to the welding portion (1).

3. The PCB spring piece for preventing excessive deformation according to claim 2, wherein: The second buffer portion (5) comprises a second vertical plate (51) and a second parallel plate (52), wherein the second vertical plate (51) is perpendicular to the welding portion (1), and the second parallel plate (52) is parallel to the welding portion (1).

4. The PCB spring piece for preventing excessive deformation according to claim 3, wherein: The length of the second vertical plate (51) is 4 / 5 of that of the first vertical plate (21), and the length of the second parallel plate (52) is 2 / 3 of that of the first parallel plate (22).

5. The PCB spring piece for preventing excessive deformation according to claim 1, characterized in that: The bending angle of the abutting portion (4) is 90°, and the extension length of the abutting portion (4) toward the welding portion (1) is 1 / 4 to 1 / 2 of the total thickness of the elastic portion (3).

6. The PCB spring piece for preventing excessive deformation according to any one of claims 1 to 5, characterized in that: The PCB spring piece is made of beryllium copper, and the outer sides of the elastic portion (3) and the abutting portion (4) are both provided with a nickel-plated layer.

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