Grounding elastic sheet for PCB (Printed Circuit Board)
By designing grounding shrapnel for PCB boards, using acute angle connection and guide block design, the shrapnel is prevented from rotating excessively during compression, solving the problem of easy deformation and failure of existing grounding shrapnel, extending the service life of the product and maintaining the effectiveness of the grounding function.
Patent Information
- Application Number
- CN202421443473.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-06-21
AI Technical Summary
The existing grounding shrapnel is prone to deformation during the bending process under force, resulting in failure of resetting and failure, which in turn leads to failure of the grounding function.
A grounding shrapnel for PCB board is designed, which includes a bottom plate and shrapnel. The connection angle between the bottom plate and shrapnel is an acute angle. The free end of the shrapnel extends vertically downward with a spring foot. The bottom end of the shrapnel is equipped with a guide block, and the guide block is parallel to each other. Through the design of the guide groove and the air-avoiding groove, the guide block abuts the bottom plate or PCB board during the compression process, preventing the shrapnel from continuing to rotate and avoiding deformation.
It effectively avoids the shrapnel deformation and inability to reset during compression, extends the service life of the product, prevents the failure of the grounding function, and avoids damage to other electronic components on the PCB board.
Smart Images
Figure CN222940224U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of grounding spring pieces, and particularly relates to a grounding spring piece for a PCB board. Background Art
[0002] Connection terminals are widely used in electronic appliances and are a basic and indispensable electrical component. The most important part in the connection terminal is the spring piece structure. By squeezing and releasing the spring piece, the functions of signal connection and disconnection are realized. However, the existing grounding spring pieces are generally composed of a bottom plate and a spring piece. During the working process of the grounding spring piece, when the grounding spring piece is compressed by force, if the compression force is greater than the elastic deformation force of the grounding spring piece itself or when it is compressed multiple times, the spring piece is prone to deformation, collapse under pressure, and cannot rebound during the process of being bent by force, resulting in the failure of the grounding function. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a grounding spring piece for a PCB board, aiming to solve the technical problem that the spring piece of the grounding spring piece in the existing technology is prone to deformation, collapse under pressure, and cannot rebound during the process of being bent by force, resulting in the failure of the grounding function.
[0004] To achieve the above purpose, a grounding spring piece for a PCB board provided by an embodiment of the utility model includes a bottom plate and a spring piece. The bottom plate is used for connecting to the PCB. One end of the spring piece is connected to one end of the bottom plate, and the connection angle between the bottom plate and the spring piece is an acute angle. The free end of the spring piece vertically extends downward to be provided with a spring foot.
[0005] Further, a guide block is provided at the bottom end of the spring foot and extends towards the connection end of the spring piece and the bottom plate, and the guide block is parallel to the bottom plate.
[0006] Further, one end of the bottom plate located below the spring foot extends upward to be provided with a guide plate, a guide groove is arranged in the guide plate, and the guide block penetrates through the guide plate through the guide groove and the guide block is slidably connected with the guide groove.
[0007] Further, an avoidance groove is also arranged on the bottom plate, the avoidance groove is communicated with the guide groove and is located directly below the guide block.
[0008] Further, a welding hole is also arranged on the bottom plate.
[0009] Further, the spring piece includes an inclined section, a horizontal section, and a bending section. One end of the inclined section is connected to one end of the bottom plate, the other end of the inclined section is connected to the horizontal section, and an acute angle is formed between the inclined section and the bottom plate. One end of the horizontal section is connected to the inclined section, the other end is connected to the bending section, and the other end of the bending section is connected to the spring foot.
[0010] Further, the cross-section of the spring foot is smaller than the cross-section of the bending section, and the spring foot is connected to one end of the bending section and is located at the center of one end of the bending section.
[0011] One or more of the above technical solutions provided by the embodiments of the present utility model for the grounding spring piece of the PCB board at least have one of the following technical effects: when the spring piece rotates towards the bottom board around its connection point with the bottom board under pressure, when the rotation amplitude reaches a certain angle, the spring foot abuts against the bottom board or the PCB board, preventing the spring piece from continuing to rotate, avoiding the deformation of the spring piece to the point where it cannot be reset, extending the service life of the product, and avoiding the failure of the spring piece of the grounding spring piece for the PCB board provided by the present utility model, resulting in the failure of the grounding function, thereby damaging other electronic components on the PCB board. Description of the Drawings
[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0013] Figure 1 It is a schematic structural diagram of a grounding spring piece for a PCB board provided by an embodiment of the present utility model.
[0014] Among them, each reference numeral in the figure: 10, bottom board; 11, guide plate; 12, guide groove; 13, clearance groove; 14, welding hole; 20, spring piece; 21, spring foot; 22, guide block; 23, inclined section; 24, horizontal section; 25, bending section. Detailed Embodiment
[0015] The following details the embodiments of the present utility model. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the embodiments of the present utility model, and should not be construed as a limitation of the present utility model.
[0016] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.
[0017] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically defined.
[0018] In the embodiments of the present utility model, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.
[0019] In one embodiment of the present utility model, referring to Figure 1 as shown, a grounding spring piece for a PCB board is provided, including a bottom plate 10 and a spring piece 20. The bottom plate 10 is used for connecting to the PCB. One end of the spring piece 20 is connected to one end of the bottom plate 10, and the connection angle between the bottom plate 10 and the spring piece 20 is an acute angle. The free end of the spring piece 20 vertically extends downward to be provided with a spring foot 21. In this embodiment, when the spring piece 20 is subjected to pressure and rotates around its connection point with the bottom plate 10 towards the bottom plate 10, when the rotation amplitude reaches a certain angle, the spring foot 21 abuts against the bottom plate 10 or the PCB board, preventing the spring piece 20 from continuing to rotate, avoiding the deformation of the spring piece 20 to the point where it cannot be reset, extending the service life of the product, and avoiding the failure of the spring piece 20 of the grounding spring piece for a PCB board provided by the present utility model, resulting in the failure of the grounding function and thus damaging other electronic components on the PCB board.
[0020] More specifically, referring to Figure 1 as shown, the spring piece 20 and the bottom plate 10 form an acute angle of 45° to 75°.
[0021] Specifically, referring to Figure 1 as shown, the bottom end of the spring foot 21 extends towards the connection end of the spring piece 20 and the bottom plate 10 to be provided with a guiding block 22, and the guiding block 22 is parallel to the bottom plate 10. In this embodiment, since the guiding block 22 is parallel to the bottom plate 10, when the spring piece 20 is compressed by force, when the spring piece 20 is compressed to a certain angle, the guiding block 22 abuts against the bottom plate 10 or the PCB board, preventing the spring piece 20 from continuing to rotate, avoiding the deformation of the spring piece 20 to the point where it cannot be reset, and at the same time, the guiding block 22 increases the contact area with the bottom plate 10 or the PCB board, avoiding the spring foot 21 from scratching the PCB board or the bottom plate 10.
[0022] Specifically, referring to Figure 1 As shown, one end of the bottom plate 10 located below the spring foot 21 extends upward to be provided with a guide plate 11. A guide groove 12 is arranged in the guide plate 11. The guide block 22 penetrates through the guide plate 11 through the guide groove 12 and the guide block 22 is slidably connected with the guide groove 12. In this embodiment, the guide block 22 moves along the direction of the guide groove 12, avoiding the instability of the elastic force during the compression of the elastic sheet 20, which may cause the elastic sheet 20 to slide left and right, thus damaging the elastic sheet 20.
[0023] Specifically, referring to Figure 1 As shown, an avoidance groove 13 is further arranged on the bottom plate 10. The avoidance groove 13 is communicated with the guide groove 12 and is located directly below the guide block 22. In this embodiment, through the avoidance groove 13, when the elastic sheet 20 deforms to a certain extent, the guide block 22 abuts against the PCB, and at the same time, it plays a guiding role for the guide block 22, avoiding the instability of the elastic force during the compression of the elastic sheet 20, which may cause the elastic sheet 20 to slide left and right, thus damaging the elastic sheet 20.
[0024] Specifically, referring to Figure 1 As shown, a welding hole 14 is further arranged on the bottom plate 10. In this embodiment, leaving the welding hole 14 on the bottom plate 10 makes it more convenient to weld or bond the grounding elastic sheet provided by the present utility model on the PCB.
[0025] Specifically, referring to Figure 1 As shown, the elastic sheet 20 includes an inclined section 23, a horizontal section 24, and a bending section 25. One end of the inclined section 23 is connected to one end of the bottom plate 10, the other end of the inclined section 23 is connected to the horizontal section 24, and an acute angle is formed between the inclined section 23 and the bottom plate 10. One end of the horizontal section 24 is connected to the inclined section 23, the other end is connected to the bending section 25, and the other end of the bending section 25 is connected to the spring foot 21. In this embodiment, the horizontal section 24 can increase the contact area with other parts, making the elastic sheet 20 more uniformly stressed and more stable.
[0026] Specifically, referring to Figure 1 As shown, the cross-section of the spring foot 21 is smaller than the cross-section of the bending section 25, and the spring foot 21 is connected to one end of the bending section 25 and is located at the center of one end of the bending section 25. In this embodiment, the spring foot 21 is located at the center of one end of the bending section 25, making the resistance force generated when the spring foot 21 abuts against the bottom plate 10 or the PCB more stable and making the elastic sheet 20 more uniformly stressed.
[0027] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A grounding spring for a PCB, characterized in that: It includes a base plate and a spring; the base plate is used to be connected to the PCB, one end of the spring is connected to one end of the base plate, and the connection angle between the base plate and the spring is an acute angle; the free end of the spring extends vertically downward and is provided with a spring foot.
2. The grounding spring for a PCB board according to claim 1, characterized in that: A guide block is provided at the bottom end of the elastic foot extending toward the connecting end of the elastic sheet and the bottom plate, and the guide block is parallel to the bottom plate.
3. The grounding spring for a PCB board according to claim 2, characterized in that: A guide plate is provided at one end of the bottom plate below the elastic foot, and a guide groove is provided in the guide plate. The guide block passes through the guide plate through the guide groove, and the guide block is slidably connected to the guide groove.
4. The grounding spring for a PCB board according to claim 3, characterized in that: The bottom plate is also provided with a clearance groove, which is communicated with the guide groove and is located directly below the guide block.
5. The grounding spring for a PCB board according to claim 1, characterized in that: The bottom plate is also provided with a welding hole.
6. The grounding spring for a PCB board according to claim 1, characterized in that: The spring piece includes an inclined section, a horizontal flat section and a bent section; one end of the inclined section is connected to one end of the bottom plate, and the other end of the inclined section is connected to the horizontal flat section, and an acute angle is formed between the inclined section and the bottom plate; one end of the horizontal flat section is connected to the inclined section, and the other end is connected to the bent section, and the other end of the bent section is connected to the spring foot.
7. The grounding spring for a PCB board according to claim 6, characterized in that: The cross section of the elastic foot is smaller than the cross section of the bending section, and the elastic foot is connected to one end of the bending section and is located at the center of the one end of the bending section.