Grounding elastic sheet
By designing grounding springs with barbed and anti-detachment structures, the problems of unstable grounding and large space occupation are solved, achieving stable grounding and space saving under vibration conditions, and enhancing contact reliability and design flexibility.
Patent Information
- Application Number
- CN202423034836.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Existing grounding springs and grounding contacts cannot maintain stable contact under vibration conditions, and small-sized grounding contacts cannot adapt to complex spatial environments, resulting in unstable grounding and excessive space occupation.
Design a grounding spring, including a mounting part, first and second elastic parts and a contact part. Stable installation is ensured by barbed structure and anti-detachment structure. Elastic force is provided by elastic component. The contact surface is designed as a convex curved surface to increase the contact angle range, adapt to complex spaces and reduce friction.
It achieves stable grounding under vibration conditions, saves ECU space, improves contact reliability and design flexibility, and reduces friction and scratches.
Smart Images
Figure CN223502230U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electronic connection technology, and in particular to a grounding spring. Background Technology
[0002] Currently, ECU products widely use, such as Figure 1 The grounding spring shown achieves grounding. Based on the structural characteristics of the grounding spring, each coil of the spring can be separated from each other. When the compression force is not centered, the spring is prone to bending, causing it to slip off the contact surface. Especially when encountering arc-shaped grounding devices, the grounding spring cannot provide normal contact. In special working conditions such as vibration, it is even more difficult to maintain stable contact between the grounding spring and the contact surface and grounding device.
[0003] In addition, there are products on the market such as Figure 2 and Figure 3 The grounding spring shown is too small in size to match long-distance contact lengths. If it were scaled up proportionally, it would take up a lot of internal space in the ECU and would not be able to adapt to the complex internal space environment of the product. Utility Model Content
[0004] The purpose of this application is to solve the problem that the existing grounding spring and grounding spring cannot achieve stable contact with the contact surface and grounding device. Therefore, this application provides a grounding spring that can achieve a stable connection with the contact surface and grounding device.
[0005] This application provides a grounding spring, installed between a printed circuit board and a grounding device. The grounding spring includes:
[0006] Mounting section, used to penetrate and be mounted on an external insulator;
[0007] The mounting part has a first elastic part extending on one side along its through direction, and a second elastic part extending on the other side.
[0008] A first contact portion is provided at one end of the first elastic portion away from the mounting portion, and a second contact portion is provided at one end of the second elastic portion away from the mounting portion.
[0009] The first and second contact portions are used for electrical connection with external grounding contacts.
[0010] By adopting the above technical solution, stable contact with the external grounding contact is achieved through the mounting part that penetrates and is installed on the external insulator, and the first contact part and the second contact part that are respectively connected to the first elastic part and the second elastic part.
[0011] In some embodiments, the mounting portion includes a first side and a second side opposite to each other;
[0012] Barbs are provided on the first and second sides of the mounting section.
[0013] By adopting the above technical solution, a barb structure is provided in the mounting part, which can provide holding force after penetrating and installing through the external insulator, making the mounting part less likely to fall off, so that the grounding spring can make stable contact with the printed circuit board and grounding device.
[0014] In some embodiments, an anti-detachment structure is provided between the first and second sides of the mounting portion. The anti-detachment structure is elastically connected to the mounting portion and has elastic potential energy protruding from the surface of the mounting portion.
[0015] By adopting the above technical solution, the anti-detachment structure is elastically connected to the mounting part. After the mounting part is installed through the external insulator, the elastic potential energy prevents the mounting part from falling off the external insulator under force, thus increasing the stability of the grounding spring.
[0016] In some embodiments, the anti-detachment structure includes an integrally formed spring, the anti-detachment direction of which is opposite to the anti-detachment direction of the barb structure in the penetration direction.
[0017] Using the above technical solution, the anti-detachment direction of the anti-detachment structure is opposite to that of the barb structure in the penetration direction. This can provide the mounting part with a holding force in the penetration direction and in the opposite direction of the closing direction, provide a pre-installed holding force for the grounding spring, and after installation, absorb the force generated by the printed circuit board and grounding device on the grounding spring, thereby improving contact stability.
[0018] In some embodiments, the first contact portion and the second contact portion have protruding contact surfaces. The first contact portion is electrically connected to an external grounding contact through the contact surface, and the contact surface is convex curved.
[0019] By adopting the above technical solution, the protruding contact surface and the external grounding contact, such as the grounding contact of a printed circuit board or the grounding contact of a grounding device, and the contact surface being a convex curved surface, can increase the allowable contact angle range after compression, ensure stable contact, and at the same time reduce friction or scratches on the device to which the external grounding contact belongs.
[0020] In some embodiments, the first elastic portion includes: a first bending region, a first extension region, and a second bending region connected in sequence.
[0021] The end of the first bending area that is away from the first extension area is connected to the mounting part, and the end of the second bending area that is away from the first extension area is connected to the first contact part.
[0022] The first elastic part applies elastic force to the first contact part through the elastic deformation of the first bending area and the second bending area, so that the first contact part forms a resisting force against the external grounding contact.
[0023] The second elastic portion includes: a third bending region, a second extension region, and a fourth bending region connected in sequence;
[0024] The end of the third bending zone that is away from the second extension zone is connected to the mounting part, and the end of the fourth bending zone that is away from the second extension zone is connected to the second contact part.
[0025] The second elastic part applies elastic force to the second contact part through the elastic deformation of the third and fourth bending areas, so that the second contact part forms a resisting force against the external grounding contact.
[0026] By adopting the above technical solution, the first elastic part applies elastic force to the first contact part through the elastic deformation of the first bending area and the second bending area, so that the first contact part forms a resisting force against the external grounding contact; the second elastic part applies elastic force to the second contact part through the elastic deformation of the third bending area and the fourth bending area, so that the second contact part forms a resisting force against the external grounding contact. This can increase the stability of the contact, and the elastic deformation can increase the height that the printed circuit board can be placed at, improve flexibility, and provide appropriate elastic force to ensure that the printed circuit board or external devices are not damaged during contact.
[0027] In some embodiments, the first elastic portion is arranged in a "Z" shape; the second elastic portion is arranged in a "C" shape.
[0028] In some embodiments, the angle between the extension direction of the first extension region of the first elastic part and the penetration direction is 50° to 80°; the extension direction of the second extension region of the second elastic part is parallel to the penetration direction.
[0029] By adopting the above technical solution, the first elastic part and the second elastic part can be flexibly set as needed, so that the acceptable contact range is wider, the grounding position can be flexibly selected, the design flexibility is improved, and the contact stability is guaranteed.
[0030] This application provides a grounding spring that achieves stable contact with an external grounding contact through a mounting portion that penetrates and is mounted on an external insulator, and a first contact portion and a second contact portion that are respectively connected to a first elastic portion and a second elastic portion. It can accept a longer grounding height and has greater design flexibility. The grounding position can be flexibly selected, which can save ECU space to the maximum extent. The convex contact design of the contact surface can ensure stable contact reliability. Attached Figure Description
[0031] Figure 1 This is a schematic diagram of a grounding spring according to an embodiment of this application;
[0032] Figure 2 This is a schematic diagram of another grounding spring according to an embodiment of this application;
[0033] Figure 3 This is a schematic diagram of another grounding spring according to an embodiment of this application;
[0034] Figure 4 This is a schematic diagram of the structure of a grounding spring according to an embodiment of this application;
[0035] Figure 5 This is a schematic diagram of the mounting portion of a grounding spring according to an embodiment of this application;
[0036] Figure 6 This is a schematic diagram of a barb structure according to an embodiment of this application;
[0037] Figure 7 This is a schematic diagram of an anti-detachment structure according to an embodiment of this application;
[0038] Figure 8 This is a schematic diagram of a spring clip according to an embodiment of this application;
[0039] Figure 9 This is a schematic diagram of a contact surface according to an embodiment of this application;
[0040] Figure 10 This is a schematic diagram of the structure of a first elastic part and a second elastic part according to an embodiment of this application;
[0041] Explanation of reference numerals in the attached figures:
[0042] 1: Installation Department;
[0043] 11: First side; 12: Second side;
[0044] 121: Barbed structure; 131: Anti-detachment structure; 1211: Penetrating surface; 1212: Anti-detachment surface; 1310: Spring clip;
[0045] 2: First elastic part;
[0046] 21: First bending zone; 22: First extension zone; 23: Second bending zone;
[0047] 3: Second elastic part;
[0048] 31: Third bend zone; 32: Second extension zone; 33: Fourth bend zone;
[0049] 4: First contact part;
[0050] 41: Contact surface;
[0051] 5: Second contact part;
[0052] 6: PCB;
[0053] 7: ECU housing;
[0054] 8: Grounding devices. Detailed Implementation
[0055] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Although the description of this application will be presented in conjunction with some embodiments, this does not mean that the features of this application are limited to this embodiment. On the contrary, the purpose of describing the application in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of this application. To provide a thorough understanding of this application, many specific details will be included in the following description. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.
[0056] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0057] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0058] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0059] In the description of this application, it should be understood that "electrical connection" can be understood as physical contact and electrical conduction between components; it can also be understood as the form of connection between different components in a circuit structure through physical lines that can transmit electrical signals, such as copper foil or wires on a printed circuit board (PCB). "Coupled through..." can be understood as electrical conduction through indirect coupling. Indirect coupling can be understood as contactless coupling. Those skilled in the art will understand that coupling refers to a phenomenon where there is close cooperation and mutual influence between the inputs and outputs of two or more circuit elements or electrical networks, and energy is transferred from one side to the other through interaction. To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be further described in detail below with reference to the accompanying drawings.
[0060] This application provides a grounding spring, installed between PCB6 and grounding device 8. For example... Figure 4 As shown, the grounding spring includes: a mounting part 1 for penetrating and mounting to an external insulator; a first elastic part 2 extending on one side of the mounting part 1 along its penetrating direction, and a second elastic part 3 extending on the other side; a first contact part 4 is provided at one end of the first elastic part 2 away from the mounting part 1, and a second contact part 5 is provided at one end of the second elastic part 3 away from the mounting part 1; the first contact part 4 and the second contact part 5 are used for electrical connection with an external grounding contact.
[0061] The grounding spring is made of highly elastic stainless steel and is formed by stamping.
[0062] Figure 4 The arrow in the image indicates the direction of penetration when mounting part 1 is inserted through and installed on the external insulator.
[0063] In this application embodiment, there is no restriction on the type of external grounding contact. It is mainly used to connect the first contact part 4 and the second contact part 5 of the grounding spring when the PCB6 is electrically connected to the grounding device 8 to achieve grounding. For example, it can be the grounding contact in the ECU product and the grounding device 8.
[0064] In the embodiments of this application, the shape of the grounding device 8 and the external insulator is not limited; they can be planar or non-planar, such as arc-shaped.
[0065] The external insulator is mainly used to install the grounding spring and can be any insulating object; for example, it can be the ECU housing 7.
[0066] In this embodiment, the grounding spring is made of highly elastic stainless steel material and is integrally stamped, which can increase the stability of the grounding spring.
[0067] Specifically, the mounting part 1 can be pre-installed on the external insulator, and then the PCB6 and the grounding device 8 are connected to the first contact part 4 and the second contact part 5 respectively, which can reduce friction and scratches on the PCB6 and the grounding device 8 and improve contact stability.
[0068] Furthermore, the first elastic part 2 and the second elastic part 3 can provide elasticity, and the acceptable grounding height and grounding position are more flexible, improving flexibility, saving ECU space to the maximum extent, and ensuring contact reliability.
[0069] In this embodiment of the application, stable contact with the external grounding contact is achieved by the mounting part 1 that penetrates and is installed on the external insulator, and the first contact part 4 and the second contact part 5 that are respectively connected to the first elastic part 2 and the second elastic part 3.
[0070] In some alternative implementations, such as Figure 5 As shown, the mounting part 1 includes a first side 11 and a second side 12 facing each other; barb structures 121 are respectively provided on the first side 11 and the second side 12 of the mounting part 1.
[0071] Specifically, the barbed structure 121 can provide a retaining force after the mounting part 1 of the grounding spring is installed in the external insulator, so as to keep the mounting part 1 in the external insulator and prevent it from falling off.
[0072] For example, the mounting part 1 can be installed in the external insulator by means of an interference fit, and the barbed structure 121 can make the mounting part 1 bear force, preventing the mounting part 1 from falling off during subsequent installation, providing pre-installation holding force, and improving contact stability.
[0073] Figure 6 This is a schematic diagram of a barb structure 121 provided in an embodiment of this application, as shown below. Figure 6 As shown, each barb includes a through surface 1211 and an anti-detachment surface 1212. The through surface 1211 is thinner at the top and thicker at the bottom along the through direction, which allows the mounting part 1 to smoothly penetrate the external insulator. If the grounding spring is pulled in the opposite direction of the through direction, it will not fall off due to the squeezing force and friction on the anti-detachment surface 1212. Furthermore, due to its shape of being thinner at the top and thicker at the bottom, the grounding spring will also be subjected to squeezing force and friction when pulled in the through direction, making it difficult to pull. Therefore, the mounting part 1 can be securely fixed on the external insulator, improving stability.
[0074] In practice, barbed structures 121 can be designed at the two edges of the middle part of the grounding spring to provide a certain holding force after being assembled with the matching plastic ECU housing 7.
[0075] In this application embodiment, the type of barb structure is not limited; for example, it can be as follows: Figure 5The spike shape shown can also be designed as a convex bulge in the thickness direction of the mounting part 1.
[0076] In this embodiment, by providing a barb structure 121 in the mounting part 1, a retaining force can be provided after penetrating and mounting on the external insulator, making the mounting part 1 less likely to fall off, so that the grounding spring can make stable contact with the printed circuit board and the grounding device 8.
[0077] Furthermore, such as Figure 7 As shown, an anti-detachment structure 131 is provided between the first side 11 and the second side 12 of the mounting part 1. The anti-detachment structure 131 is elastically connected to the mounting part 1 and has elastic potential energy protruding from the surface of the mounting part 1.
[0078] In some optional embodiments, the anti-detachment structure 131 includes an integrally formed spring piece 1310, the anti-detachment direction of the spring piece 1310 being the same as the anti-detachment direction of the barb structure 121 (e.g., Figure 7 (As shown by the small arrow in the image), the opposite direction of penetration.
[0079] It is known that, as Figure 7 As shown, the anti-disengagement direction of the spring 1310 and the anti-disengagement direction of the barb structure 121 can also be the same in the penetration direction.
[0080] Specifically, such as Figure 8 As shown, the anti-detachment structure 131 can be an anti-detachment buckle to prevent the grounding spring from coming off due to the large compressive force after assembling the grounding device 8.
[0081] Furthermore, the anti-detachment structure 131 is a sheet-like structure, namely a spring piece 1310. It can be one in the center, two symmetrically distributed, or other snap-fit structures on the side of the grounding device 8. No specific restrictions are made in this embodiment. The main purpose is to allow the mounting part 1 to detach from the external insulator when it receives compressive force.
[0082] In this embodiment, the anti-detachment structure 131 is elastically connected to the mounting part 1. After the mounting part 1 is installed through the external insulator, the elastic potential energy prevents the mounting part 1 from falling off the external insulator after being subjected to force, thus increasing the stability of the grounding spring. The anti-detachment direction of the anti-detachment structure 131 is opposite to that of the anti-detachment direction of the barb structure 121 in the penetration direction. It can provide the mounting part 1 with a holding force in the penetration direction and in the opposite direction of the closing direction, providing a pre-installed holding force for the grounding spring. After installation, it absorbs the force generated by the printed circuit board and the grounding device 8 on the grounding spring, thus improving contact stability.
[0083] In some alternative implementations, such as Figure 9As shown, the first contact portion 4 and the second contact portion 5 have protruding contact surfaces 41. The first contact portion 4 is electrically connected to an external grounding contact through the contact surface 41, and the contact surface 41 is a convex curved surface.
[0084] In this embodiment of the application, the protruding contact surface 41 is connected to an external grounding contact, such as the grounding contact of a printed circuit board or the grounding contact of a grounding device 8. The contact surface 41 is a convex curved surface, which can increase the allowable contact angle range after compression, ensure stable contact, and reduce friction or scratches on the device to which the external grounding contact belongs.
[0085] Specifically, rounded convex structures are stamped on the first contact portion 4 and the second contact portion 5 of the grounding spring, which can increase the allowable contact angle range after compression, ensure a stable contact point, and reduce friction or scratches with the contact device.
[0086] Furthermore, the two contact surfaces 41 are designed on the symmetrical line along the through direction of the contact spring 1310, which provides symmetrical elastic force after assembly compression, making it more stable.
[0087] In some alternative implementations, such as Figure 10 As shown, the first elastic part 2 includes: a first bending region 21, a first extension region 22, and a second bending region 23 connected in sequence; one end of the first bending region 21 away from the first extension region 22 is connected to the mounting part 1, and one end of the second bending region 23 away from the first extension region 22 is connected to the first contact part 4; the first elastic part 2 applies elastic force to the first contact part 4 through the elastic deformation of the first bending region 21 and the second bending region 23, so that the first contact part 4 forms a resistance force against the external grounding contact; the second elastic part 3 includes: a third bending region 31, a second extension region 32, and a fourth bending region 33 connected in sequence; one end of the third bending region 31 away from the second extension region 32 is connected to the mounting part 1, and one end of the fourth bending region 33 away from the second extension region 32 is connected to the second contact part 5; the second elastic part 3 applies elastic force to the second contact part 5 through the elastic deformation of the third bending region 31 and the fourth bending region 33, so that the second contact part 5 forms a resistance force against the external grounding contact.
[0088] Specifically, the first elastic part 2 is arranged in a "Z" shape; the second elastic part 3 is arranged in a "C" shape.
[0089] Furthermore, the angle between the extension direction of the first extension region 22 of the first elastic part 2 and the penetration direction is 50° to 80°; the extension direction of the second extension region 32 of the second elastic part 3 is parallel to the penetration direction.
[0090] In this embodiment, the first elastic part 2 applies elastic force to the first contact part 4 through the elastic deformation of the first bending area 21 and the second bending area 23, so that the first contact part 4 forms a resisting force against the external grounding contact; the second elastic part 3 applies elastic force to the second contact part 5 through the elastic deformation of the third bending area 31 and the fourth bending area 33, so that the second contact part 5 forms a resisting force against the external grounding contact. This can increase the stability of the contact, and the elastic deformation can increase the height that the printed circuit board can be placed at, improving flexibility. In addition, it can provide appropriate elastic force to ensure that the printed circuit board or external devices are not damaged during contact. The first elastic part 2 and the second elastic part 3 can be flexibly set as needed to make the acceptable contact range wider, the grounding position can be flexibly selected, improve design flexibility, and ensure contact stability.
[0091] The assembly and usage method of the grounding spring in this embodiment is described as follows: First, the grounding spring is installed into the ECU housing 7. Its barbed structure 121 and buckle (anti-detachment structure 131) provide sufficient holding force. After assembling the PCB 6, its bending design allows the PCB 6 board to be placed within a large height tolerance range. At the same time, its bending design provides suitable elastic force, ensuring contact without causing excessive stress on the board due to excessive elastic force. Finally, the grounding device 8 is assembled. After the grounding device 8 is assembled, the grounding spring can provide sufficient elastic force. Because of the anti-detachment structure 131, the elastic force on the grounding device 8 side will not be transmitted to the PCB 6 side. In addition, the bending mechanism on the grounding device 8 side can be optimized according to the internal space of the product.
[0092] The grounding spring in this embodiment can be well applied to both rounded (non-planar) and planar grounding scenarios. The longer the required grounding height, the greater the design flexibility of this grounding spring. On one hand, the grounding position selection is flexible, maximizing space saving for the ECU; on the other hand, the convex contact design at both ends ensures stable and reliable contact.
[0093] This application provides a grounding spring that achieves stable contact with an external grounding contact through a mounting portion 1 that penetrates and is mounted on an external insulator, and a first contact portion 4 and a second contact portion 5 that are respectively connected to a first elastic portion 2 and a second elastic portion 3. It can accept a longer grounding height and has greater design flexibility. The grounding position can be flexibly selected, which can save ECU space to the maximum extent. The convex contact design of the contact surface 41 can ensure stable contact reliability.
[0094] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.
Claims
1. A grounding spring, installed between a printed circuit board and a grounding device, characterized in that, The grounding spring includes: Mounting portion, the mounting portion being used to penetrate and be mounted on an external insulator; The mounting portion has a first elastic portion extending on one side along its through direction, and a second elastic portion extending on the other side. The first elastic part has a first contact part at one end opposite to the mounting part, and the second elastic part has a second contact part at one end opposite to the mounting part; The first contact portion and the second contact portion are used for electrical connection with an external grounding contact.
2. The grounding spring as described in claim 1, characterized in that, The mounting portion includes a first side and a second side facing each other; Barb structures are provided on the first and second sides of the mounting portion, respectively.
3. The grounding spring as described in claim 2, characterized in that, An anti-detachment structure is provided between the first side and the second side of the mounting part. The anti-detachment structure is elastically connected to the mounting part and has elastic potential energy protruding from the surface of the mounting part.
4. The grounding spring as described in claim 3, characterized in that, The anti-detachment structure includes an integrally formed spring piece, the anti-detachment direction of which is the same as or opposite to the anti-detachment direction of the barb structure in the penetration direction.
5. The grounding spring as described in claim 1, characterized in that, The first contact portion and the second contact portion have protruding contact surfaces. The first contact portion is electrically connected to an external grounding contact through the contact surface, and the contact surface is convex curved.
6. The grounding spring as described in claim 1, characterized in that, The first elastic portion includes: a first bending region, a first extension region, and a second bending region connected in sequence; The end of the first bending region opposite to the first extension region is connected to the mounting portion, and the end of the second bending region opposite to the first extension region is connected to the first contact portion. The first elastic part applies elastic force to the first contact part through the elastic deformation of the first bending area and the second bending area, so that the first contact part forms a resisting force against the external grounding contact. The second elastic portion includes: a third bending region, a second extension region, and a fourth bending region connected in sequence; The end of the third bending region that is away from the second extension region is connected to the mounting part, and the end of the fourth bending region that is away from the second extension region is connected to the second contact part. The second elastic part applies elastic force to the second contact part through the elastic deformation of the third and fourth bending areas, so that the second contact part forms a resisting force against the external grounding contact.
7. The grounding spring as described in claim 6, characterized in that, The first elastic part is arranged in a "Z" shape; The second elastic part is arranged in a "C" shape.
8. The grounding spring as described in claim 6, characterized in that, The angle between the extension direction of the first extension region of the first elastic part and the penetration direction is 50° to 80°. The extension direction of the second extension region of the second elastic part is parallel to the penetration direction.