Fpc electric connector

Abstract

The utility model provides an fpc electric connector, which is used for connecting a flexible circuit board and comprises a main body base, a conductive terminal and a buckling piece, the conductive terminal is arranged on the main body base, the conductive terminal is electrically connected with the flexible circuit board, a placing surface is arranged on the conductive terminal, the flexible circuit board is arranged on the placing surface, the flexible circuit board is fixed between the placing surface and the buckling piece, and the minimum distance a from the buckling piece to the placing surface and the thickness b of the flexible circuit board meet the relational expression that b-a is greater than 0.03 mm and greater than 0.01 mm, according to the fpc electric connector provided by the invention, the magnitude of the extrusion force of the buckling piece on the flexible circuit board is limited by controlling the minimum distance a from the buckling piece to the placing surface, and the minimum distance a from the buckling piece to the placing surface is increased to reduce the pressure on the circuit board, so that the damage to the flexible circuit board in the process of arranging the flexible circuit board on the electric connector is reduced.

Description

Technical Field

[0001] This application relates to the field of electrical connectors, and particularly to an FPC electrical connector. Background Art

[0002] FPC (Flexible Printed Circuit), that is, a flexible printed circuit board, is a kind of circuit board with flexibility and bendability. Compared with traditional rigid printed circuit boards (PCBs), FPCs have many unique advantages and application scenarios, and the performance of the electrical connectors of flexible circuit boards plays a crucial role in the stability and reliability of the overall device. Traditional electrical connectors mainly achieve the fixation of conductive terminals and flexible circuit boards by increasing friction through extrusion. However, this extrusion connection method has some problems in practical applications. First, excessive extrusion force may cause damage to the flexible circuit board, thus affecting the normal operation of the circuit and the stability of the device. Due to its thin and flexible characteristics, the flexible circuit board is easily affected by the extrusion force, which may lead to deformation or rupture of the circuit board, and this is a problem that cannot be ignored for the long-term reliability of electrical connectors.

[0003] Secondly, during the conduction process of the electrical connector, due to too tight extrusion, the current passing through the flexible circuit board increases, and the resistance generated by the conductive terminals due to the passing of current will cause a certain amount of heat to be generated. This heat may affect the performance of the flexible circuit board during the conduction process, especially in high-current or high-power applications, the accumulation of heat will cause the material of the circuit board to soften, thereby affecting its electrical performance and mechanical stability. The traditional fixing method fails to effectively solve these problems, so a new type of electrical connector design is needed to provide a more reliable and stable connection, while protecting the flexible circuit board from excessive pressure and heat.

[0004] Therefore, it is necessary to design an FPC electrical connector with low loss to the flexible circuit board and extend the service life of the flexible circuit board to solve the above problems. Summary of the Utility Model

[0005] In view of this, it is necessary to provide an FPC electrical connector with low loss to the flexible circuit board and extend the service life of the flexible circuit board to solve the above problems.

[0006] An embodiment of this application provides an FPC electrical connector for connecting a flexible circuit board. The FPC electrical connector includes:

[0007] A main body base;

[0008] Conductive terminals, provided on the main body base, the conductive terminals are electrically connected to the flexible circuit board, and the conductive terminals have a placement surface, and the flexible circuit board is placed on the placement surface;

[0009] A fastening part, wherein the fastening part is rotatably connected to the conductive terminal. When the fastening part is rotated to engage with the main body base, the flexible circuit board is fixed between the placement surface and the fastening part. The minimum distance a from the fastening part to the placement surface and the thickness b of the flexible circuit board satisfy the relationship: 0.03mm>ba>0.01mm.

[0010] In at least one embodiment of the present application, the conductive terminal has a plurality of rotating heat dissipation portions, the plurality of rotating heat dissipation portions are arranged at equal intervals, and the fastening member is rotatably connected to the plurality of rotating heat dissipation portions;

[0011] The distance between the rotating heat dissipating parts in their arrangement direction is defined as distance c, and the distance between two adjacent rotating heat dissipating parts is defined as distance d. c and d satisfy the relationship: 0.3mm>c>0.1mm, 0.5mm>dc≥0.3mm.

[0012] In at least one embodiment of the present application, the fastening member has a rotating shaft portion, and the rotating heat dissipation portion is provided with a rotating hole corresponding to the rotating shaft portion;

[0013] The diameter r of the rotating hole and the diameter R of the rotating shaft satisfy the relationship: 0.7<r:R<0.9.

[0014] In at least one embodiment of the present application, an expansion groove is provided on the rotating heat dissipation portion, the expansion groove passes through the rotating heat dissipation portion in the arrangement direction of the rotating heat dissipation portion, and one end of the expansion groove is connected to the rotating hole.

[0015] In at least one embodiment of the present application, a locking protrusion is provided on the conductive terminal, and a locking groove is provided on the main body base, and the locking protrusion is locked in the locking groove to fixedly connect the conductive terminal and the main body base.

[0016] In at least one embodiment of the present application, a positioning platform is provided on the placement surface, and when the fastening member is engaged with the main body base, the flexible circuit board is attached to the positioning platform.

[0017] In at least one embodiment of the present application, a plurality of fixing legs are provided on a side of the main body base facing away from the conductive terminal.

[0018] In at least one embodiment of the present application, the fixing legs are made of metal.

[0019] In at least one embodiment of the present application, a positioning support platform is provided on the main body base, and the flexible circuit board is engaged with the positioning support platform, and the positioning support platform limits the flexible circuit board from moving in a direction parallel to the placement surface;

[0020] When the fastening member is snap - connected to the main body base, the positioning and supporting platform is located between the fastening member and the conductive terminal. The positioning and supporting platform is located on the rotation path of the fastening member, and the positioning and supporting platform restricts the rotation of the fastening member.

[0021] In at least one embodiment of the present application, the fixing leg has a sliding connection portion, and the main body base has a sliding track corresponding to the sliding connection portion. The fixing leg is slidably connected to the sliding track through the sliding connection portion;

[0022] The sliding connection portion has a boss, and the boss abuts against the sliding track.

[0023] The provided FPC electrical connector restricts the magnitude of the force exerted by the fastening member on the flexible circuit board by controlling the minimum distance a from the fastening member to the placement surface. Increasing the minimum distance a from the fastening member to the placement surface reduces the pressure on the circuit board, thereby reducing the damage suffered by the flexible circuit board during the process of being arranged on the electrical connector. Brief Description of the Drawings

[0024] Figure 1 It is a three - dimensional structure diagram when the flexible circuit board is placed on the FPC electrical connector and fixed between the fastening member and the conductive terminal;

[0025] Figure 2 It is a three - dimensional structure diagram when the flexible circuit board is placed on the FPC electrical connector and fixed between the fastening member and the conductive terminal;

[0026] Figure 3 It is a top view when the flexible circuit board is placed on the FPC electrical connector and fixed between the fastening member and the conductive terminal;

[0027] Figure 4 It is for Figure 3 Cross - sectional view A - A;

[0028] Figure 5 It is a bottom view when the flexible circuit board is placed on the FPC electrical connector and fixed between the fastening member and the conductive terminal;

[0029] Figure 6 It is for Figure 5 Cross - sectional view B - B;

[0030] Figure 7 It is a three - dimensional structure diagram when the flexible circuit board is not placed on the FPC electrical connector and the fastening member is snap - connected to the main body base;

[0031] Figure 8 It is a three - dimensional structure diagram when the flexible circuit board is not placed on the FPC electrical connector and the fastening member is snap - connected to the main body base;

[0032] Figure 9 Top view when the flexible circuit board is not placed on the FPC electrical connector and the fastening member is snap-fitted onto the main body base;

[0033] Figure 10 Is Figure 9 Sectional view C-C of

[0034] Figure 11 Exploded view of the structure of the FPC electrical connector;

[0035] Figure 12 Three-dimensional view of the structure when the flexible circuit board is placed on the FPC electrical connector and the fastening member is not snap-fitted onto the main body base;

[0036] Figure 13 Top view when the flexible circuit board is placed on the FPC electrical connector and the fastening member is not snap-fitted onto the main body base;

[0037] Figure 14 Is Figure 13 Sectional view D-D of

[0038] Figure 15 Three-dimensional view of the structure when the flexible circuit board is not placed on the FPC electrical connector and the fastening member is not snap-fitted onto the main body base;

[0039] Figure 16 Top view when the flexible circuit board is not placed on the FPC electrical connector and the fastening member is not snap-fitted onto the main body base;

[0040] Figure 17 Is Figure 16 Sectional view E-E of

[0041] Figure 18 Schematic diagram of the dimensions of the FPC electrical connector;

[0042] Figure 19 Schematic diagram of the dimensions of the FPC electrical connector.

[0043] Description of main component symbols

[0044] 100, FPC electrical connector; 1, main body base; 11, clamping groove; 12, positioning support platform; 13, sliding track; 2, conductive terminal; 21, placement surface; 22, rotating heat dissipation part; 221, rotating hole; 23, expansion slot; 24, clamping protrusion; 25, clamping platform; 3, fastening member; 31, rotating shaft part; 4, fixing foot; 41, sliding connection part; 411, convex platform; 5, flexible circuit board. Detailed implementation manners

[0045] The embodiments of the present application will be described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0046] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "provided on" another component, it can be directly provided on the other component or there may be an intermediate component at the same time. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "rear", and similar expressions used herein are only for the purpose of illustration.

[0047] An embodiment of the present application provides an FPC electrical connector for connecting a flexible circuit board. The FPC electrical connector includes:

[0048] A main body base;

[0049] Conductive terminals are provided on the main body base. The conductive terminals are electrically connected to the flexible circuit board. The conductive terminals have a placement surface, and the flexible circuit board is placed on the placement surface;

[0050] A fastening member. The fastening member is rotatably connected to the conductive terminal. When the fastening member rotates to be clamped with the main body base, the flexible circuit board is fixed between the placement surface and the fastening member. The minimum distance a from the fastening member to the placement surface and the thickness b of the flexible circuit board satisfy the relationship: 0.03 mm > b - a > 0.01 mm. The above-provided FPC electrical connector restricts the magnitude of the force exerted by the fastening member on the flexible circuit board by controlling the minimum distance a from the fastening member to the placement surface, and increases the minimum distance a from the fastening member to the placement surface to reduce the pressure on the circuit board, thereby reducing the damage suffered by the flexible circuit board during the process of being disposed on the electrical connector.

[0051] The following will describe in detail some embodiments of the present application with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0052] Please refer to Figures 1 - 19, an embodiment of the present application provides an FPC electrical connector 100 for connecting a flexible circuit board 5. The FPC electrical connector 100 includes a main body base 1, conductive terminals 2, and a fastening member 3. The conductive terminals 2 are provided on the main body base 1. The conductive terminals 2 are electrically connected to the flexible circuit board 5. The conductive terminals 2 have a placement surface 21, and the flexible circuit board 5 is placed on the placement surface 21. The fastening member 3 is rotatably connected to the conductive terminals 2. When the fastening member 3 rotates to be clamped with the main body base 1, the flexible circuit board 5 is fixed between the placement surface 21 and the fastening member 3. The minimum distance a from the fastening member 3 to the placement surface 21 and the thickness b of the flexible circuit board 5 satisfy the relationship: 0.03 mm > b - a > 0.01 mm.

[0053] Specifically, the main body base 1 is the basic structure of the FPC electrical connector, which is used to carry and fix the conductive terminals 2 and other components. It provides mechanical support and positioning for the connector, ensuring that the conductive terminals 2 and the fastening member 3 can be correctly installed and operated thereon. The design of the main body base 1 ensures the overall structural stability of the electrical connector, making the connection between the circuit board and the conductive terminals 2 more secure, thereby improving the reliability and service life of the device. The conductive terminals 2 are the core components in the connector, which are used to connect the flexible circuit board 5 to the external circuit to ensure the effective transmission of electrical signals. The conductive terminals 2 are provided on the main body base 1 and provide a placement surface 21 for placing the flexible circuit board 5. The design of the conductive terminals 2 ensures a reliable electrical connection with the flexible circuit board 5. At the same time, the placement surface 21 provides stable support for the flexible circuit board 5, reducing the risk of movement or damage to the flexible circuit board 5 during use. The placement surface 21 is a flat area on the conductive terminals 2 for carrying the flexible circuit board 5. The design of the placement surface 21 enables the flexible circuit board 5 to be placed stably on the conductive terminals 2, ensuring effective contact and electrical connection between the circuit board and the conductive terminals 2, thereby avoiding unstable circuit conditions. The fastening member 3 is used to fix the flexible circuit board 5 on the conductive terminals 2. After the fastening member 3 is rotatably connected to the conductive terminals 2, by rotating the fastening member 3 to be clamped with the main body base 1, the flexible circuit board 5 is clamped between the placement surface 21 and the fastening member 3. The design of the fastening member 3 improves the fixing effect of the flexible circuit board 5 and avoids damage to the flexible circuit board 5 that may be caused by the traditional extrusion connection method. At the same time, the rotatable connection method between the fastening member 3 and the conductive terminals 2 can be operated more conveniently, improving the assembly efficiency. The relationship (0.03 mm > b - a > 0.01 mm) ensures that when the flexible circuit board 5 is fixed, it will not be subjected to excessive extrusion force, while ensuring good electrical contact. The setting of this distance range not only protects the flexible circuit board 5 from extrusion damage but also ensures the stability of electrical contact, extends the service life of the electrical connector, and improves the overall reliability of the device.

[0054] Furthermore, the design of the FPC electrical connector is based on long-term engineering practices and experimental research. By referring to industry standards and best practices, such as IPC-2221A (General PCB Design Standard) and IPC-7351B (Surface Mount Design Standard), these standards provide the basic dimensions and clamping ranges for the design. Through experiments and practical applications, these dimensions have been proven to achieve reliable connections without damaging the circuit board. During the FPC connector design process, manufacturers usually conduct experiments such as tensile tests, vibration tests, and temperature cycle tests to verify the reliability of electrical connections under different clamping forces. The experimental data accumulated over the years shows that within the range of 0.01 mm to 0.03 mm, effective electrical contact can be achieved while ensuring the stability and lifespan of the flexible circuit board 5. During the FPC connector design process, engineers use finite element analysis (FEA) software to simulate the clamping process of the connector. By analyzing the contact pressure, deformation, etc. between the flexible circuit board 5 and the conductive terminal 2, the connection performance within different clamping ranges can be verified. The FEA results show that the clamping range of 0.01 mm to 0.03 mm can effectively disperse stress and ensure that the connector provides sufficient contact pressure without damaging the circuit board.

[0055] In a specific example, the conductive terminal 2 has a plurality of rotating heat dissipation parts 22, and the plurality of rotating heat dissipation parts 22 are arranged at equal intervals, and the fastening member 3 is rotatably connected to the plurality of rotating heat dissipation parts 22;

[0056] The distance of the rotating heat dissipation part 22 in its arrangement direction is defined as distance c, and the distance between two adjacent rotating heat dissipation parts 22 is defined as distance d, and c and d satisfy the relational expression: 0.3 mm > c > 0.1 mm, 0.5 mm > d - c ≥ 0.3 mm.

[0057] Specifically, the rotating heat dissipation part 22 is a structure on the conductive terminal 2, and its function is to alleviate the problem of heat accumulation generated by the conductive terminal 2 during operation through heat dissipation design. Since the conductive terminal 2 generates heat when transmitting current, especially in high-current or high-power applications, the accumulation of heat may affect the performance of the FPC circuit board. Therefore, the rotating heat dissipation part 22 effectively reduces the temperature by increasing the heat dissipation area and allowing air flow. At the same time, the rotating heat dissipation part 22 is also connected to the fastening part 3, playing a role in fixing the flexible circuit board 5. The design of the rotating heat dissipation part 22 can not only effectively reduce the influence on the conductive terminal 2 and the flexible circuit board 5 due to heat accumulation, but also improve the heat dissipation efficiency of the connector and ensure the stability of the electrical connection. The multiple rotating heat dissipation parts 22 are arranged at the same interval distance to ensure the uniformity of the heat dissipation effect. The uniform interval setting enables each rotating heat dissipation part 22 to exert its heat dissipation function during operation, avoiding the problem of local overheating caused by uneven heat dissipation. The equidistant arrangement design optimizes the heat dissipation path, enabling heat to be more effectively dispersed and released, avoiding overheating caused by uneven heat dissipation. The rotating heat dissipation part 22 and the fastening part 3 are rotationally connected, enabling the fastening part 3 to rotate around the rotating heat dissipation part 22. In actual operation, through this connection method, the position of the fastening part 3 can be adjusted more flexibly, thus more conveniently fixing the flexible circuit board 5. The rotational connection method improves the convenience of installation and disassembly, and can more precisely control the clamping force when fixing the flexible circuit board 5, thereby avoiding unnecessary pressure on the flexible circuit board 5. It is defined as the distance in the arrangement direction of the rotating heat dissipation part 22, that is, the spacing of each rotating heat dissipation part 22 in the same direction. It is defined as the distance between two adjacent rotating heat dissipation parts 22, that is, in the arrangement direction, the spacing between the edges of two adjacent rotating heat dissipation parts 22. The range of the distance c is (0.3mm > c > 0.1mm). This range ensures an appropriate spacing between the rotating heat dissipation parts 22, which can effectively dissipate heat and prevent heat accumulation between the heat dissipation parts. The range of the distance d - c is (0.5mm > d - c ≥ 0.3mm). The setting of this range ensures sufficient spacing between adjacent heat dissipation parts, allowing air to flow between the heat dissipation parts, thereby further improving the heat dissipation effect.

[0058] Furthermore, in the design of electronic devices, thermal simulation software (such as ANSYS, COMSOL, etc.) is often used to simulate the spacing between different heat dissipation components and observe the temperature field distribution and heat dissipation. Practice has shown that a spacing of 0.1 mm to 0.3 mm can balance the heat dissipation effect and space utilization in most applications. The mechanical strength and stability are closely related to the physical properties of the material and the structural design. The influence of different spacings on the structural strength can be verified through finite element analysis (FEA) in engineering design. The simulation results usually show that within the distance range of 0.3 mm to 0.5 mm, the overall stability of the structure is the best, which can maintain a high mechanical strength and will not cause the structure to be fragile due to too small a spacing. In high-frequency circuits, the design of the spacing not only affects heat dissipation but also affects electrical performance. Too small a spacing may lead to electrical short circuits or electromagnetic interference, while too large a spacing will increase the capacitive effect and affect signal transmission. Through electromagnetic compatibility (EMC) testing, it can be proved that a spacing of 0.1 mm to 0.3 mm can maintain the stability of signal transmission while reducing electromagnetic interference. In many relevant industry standards, such as IPC-2221 (General Interconnection Standard for Electronic Equipment), there are clear guidelines on conductor spacing and heat dissipation component spacing, and the recommended dimensions of these standards are often based on a large amount of experimental data and practical experience.

[0059] In a specific example, the fastening member 3 has a rotating shaft portion 31, and a rotating hole 221 corresponding to the rotating shaft portion 31 is formed on the rotating heat dissipation portion 22;

[0060] The diameter r of the rotating hole 221 and the diameter R of the rotating shaft portion 31 satisfy the relationship: 0.7 < r:R < 0.9.

[0061] Specifically, the hinge portion 31 is a raised structure on the fastening member 3, typically a cylindrical portion, that forms a rotatable connection between the fastening member 3 and the rotating heat dissipation portion 22. The main function of the hinge portion 31 is to enable the fastening member 3 to rotate about it, thereby clamping and loosening the flexible circuit board 5. This design allows the fastening member 3 to flexibly adjust its position to better secure the flexible circuit board 5. The hinge portion 31 allows the fastening member 3 to easily rotate to a predetermined position, making it more convenient for the user to install and remove the flexible circuit board 5. The hinge portion 31 also ensures that the fastening member 3 remains stable during rotation, preventing it from shifting or loosening, thereby improving the overall reliability of the connector. The rotation hole 221 is a hole provided on the rotating heat dissipation portion 22, corresponding to the hinge portion 31. The function of the rotation hole 221 is to provide an insertion point for the hinge portion 31, allowing the fastening member 3 to rotate about the hinge portion 31. Through the cooperation of the rotating hole 221 and the rotating shaft portion 31, a rotatable connection is formed between the fastener 3 and the conductive terminal 2. The cooperation design of the rotating hole 221 and the rotating shaft portion 31 makes the rotation of the fastener 3 smoother, reduces friction resistance, and extends the service life of the connector. At the same time, the existence of the rotating hole 221 can also prevent the fastener 3 from shaking or falling off excessively during rotation, further improving the stability of the device. The relationship between the diameter r and the diameter R is (0.7<r:R<0.9), where r refers to the diameter of the rotating hole 221 and R refers to the diameter of the rotating shaft portion 31. The relationship of 0.7<r:R<0.9 specifies the ratio range between the diameter r of the rotating hole 221 and the diameter R of the rotating shaft portion 31. This ratio range ensures that there is an appropriate gap between the rotating shaft portion 31 and the rotating hole 221, allowing the fastener 3 to rotate freely but not too loose. If the ratio of r to R is too small, the gap between the rotating hole 221 and the rotating shaft portion 31 will be too large, which may cause the fastener 3 to loosen during rotation, affecting the stability and service life of the device; if the ratio is too large and the gap is too small, it may cause difficulty in rotation, increase friction, and affect the smooth operation of the device.

[0062] Furthermore, in a mechanical structure, a certain clearance needs to be maintained between the rotating shaft and the hole diameter to ensure smooth rotation. If the hole diameter (r) is too large relative to the diameter of the rotating shaft (R), the fit between the rotating shaft and the hole will become loose, affecting the rotation accuracy and stability. On the contrary, too small a clearance may cause jamming or increased wear. Therefore, choosing a range of 0.7 < r < 0.9 can ensure an appropriate clearance to achieve smooth rotation without being too loose. In many mechanical designs, a hole-shaft ratio of 0.7 to 0.9 is widely used in the design of components such as hinges and rotating connectors. The clearance within this ratio range is considered to be able to achieve a balance between movement flexibility and mechanical stability. If the clearance between the hole diameter and the rotating shaft is too small, the friction force will increase, resulting in increased wear of the components and reducing their service life. On the contrary, too large a clearance will lead to an increase in relative movement between components, generating vibration and noise, and even causing mechanical failures. Choosing a ratio of 0.7 to 0.9 can effectively control wear while maintaining an appropriate tightness and extending the service life of the components. Through tools such as finite element analysis (FEA), it can be proven that this ratio can achieve an optimal design in terms of mechanical stress distribution, avoiding material fatigue or damage caused by excessive stress concentration.

[0063] In a specific example, an expansion groove 23 is formed on the rotating heat dissipation part 22. The expansion groove 23 penetrates the rotating heat dissipation part 22 in the arrangement direction of the rotating heat dissipation part 22, and one end of the expansion groove 23 communicates with the rotating hole 221.

[0064] Specifically, the expansion slot 23 is a through-structure formed on the rotating heat dissipation part 22, extending along the arrangement direction of the rotating heat dissipation part 22 and communicating with the rotating hole 221. The main function of the expansion slot 23 is to increase the surface area of the heat dissipation component and the air circulation area, thereby enhancing the heat dissipation efficiency. The fact that the expansion slot 23 runs through in the arrangement direction of the rotating heat dissipation part 22 means that the slot extends from one side of the rotating heat dissipation part 22 to the other side, forming a channel. This design increases the overall surface area of the heat dissipation component, enabling heat to be more effectively conducted into the air. One end of the expansion slot 23 is connected to the rotating hole 221, allowing heat to be transferred to the external heat dissipation device or the environment through the rotating hole 221. The rotating hole 221 provides a channel for heat to be transferred out of the rotating heat dissipation part 22, helping to avoid local overheating. The expansion slot 23 increases the effective heat dissipation area of the heat dissipation component, enabling heat to be more quickly diffused into the air, thus improving the heat dissipation efficiency. Through the through design, the expansion slot 23 promotes the flow of air on and inside the surface of the heat dissipation component, helping to carry away and dissipate heat and reducing the formation of local hot spots. The design of the expansion slot 23 can reduce the material usage of the heat dissipation component, reduce the overall weight, and at the same time maintain sufficient heat dissipation performance. By optimizing the heat dissipation channel, the influence of overheating on the rotating heat dissipation part 22 is reduced, improving the structural stability and long-term reliability. The connection between the expansion slot 23 and the rotating hole 221 reduces the pressure received by the rotating shaft part 31 when it is pressed into the rotating hole 221.

[0065] In a specific example, a clamping projection 24 is provided on the conductive terminal 2, and a clamping groove 11 is provided on the main body base 1. The clamping projection 24 is clamped in the clamping groove 11 to fixedly connect the conductive terminal 2 and the main body base 1.

[0066] Specifically, the positioning protrusion 24 is a protruding part provided on the conductive terminal 2, and its shape can be a protruding edge, a round bump or other designs, so as to be inserted into the positioning groove 11 during connection. The positioning groove 11 is a groove or groove structure formed on the main body base 1 for receiving and fixing the positioning protrusion 24. By inserting the positioning protrusion 24 into the positioning groove 11, the physical connection and fixation between the conductive terminal 2 and the main body base 1 are achieved. This design ensures that the conductive terminal 2 will not shift due to vibration or external force during use. The design of the positioning protrusion 24 and the positioning groove 11 makes the installation process of the conductive terminal 2 simple, without the need for complex tools or additional fixing devices, and can be fixed by insertion and engagement. After the positioning protrusion 24 is inserted into the positioning groove 11, it can effectively prevent the conductive terminal 2 from moving or falling off during use, ensuring the stability of the electrical connection. This fixing method can withstand a certain amount of mechanical vibration and shock and is applicable to various industrial and consumer electronic devices. Through the design of the positioning protrusion 24 and the positioning groove 11, the complex operations in the assembly process are reduced, and the production and maintenance processes are simplified. Compared with using screws or other mechanical fixing methods, the positioning protrusion 24 and the positioning groove 11 provide a more reliable and easily implemented fixing solution. The use of the design of the positioning protrusion 24 and the positioning groove 11 can reduce the dependence on other fixing parts, lower the production cost, and reduce the use of materials.

[0067] In a specific example, a positioning platform 25 is provided on the placement surface 21. When the fastening member 3 is snap-connected to the main body base 1, the flexible circuit board 5 is attached to the positioning platform 25.

[0068] Specifically, the card slot 25 is a protruding area or raised portion provided on the placement surface 21 of the conductive terminal 2, and is used to provide a stable positioning surface for the flexible circuit board 5. The card slot 25 usually has an appropriate shape and size to ensure that the flexible circuit board 5 can be accurately aligned and fitted during the installation process. The card slot 25 provides a positioning platform for the flexible circuit board 5, ensuring that the circuit board will not affect the connection effect due to movement or misalignment during the installation process. When the fastening member 3 is snap-connected to the main body base 1, the flexible circuit board 5 will closely adhere to the card slot 25, ensuring good contact and electrical connection between the circuit board and the conductive terminal 2. The card slot 25 prevents the flexible circuit board 5 from being displaced or warped during the snap connection process by providing a fixed contact surface, ensuring the stability and reliability of the electrical connection. The design of the card slot 25 enables the flexible circuit board 5 to be subjected to uniform pressure during the fixing process, thereby avoiding the situation of excessive or insufficient local force. The presence of the card slot 25 enables the flexible circuit board 5 to be accurately aligned during installation, simplifying the assembly process. Through the positioning of the card slot 25, the connection problems caused by improper installation are reduced, and the assembly accuracy is improved. Stable positioning can reduce the wear and damage of the flexible circuit board 5 caused by vibration or mechanical movement during use, and enhance the long-term reliability of the device. By ensuring the stable adhesion of the flexible circuit board 5, good contact of the electrical connection is maintained, and the degradation of electrical performance caused by poor contact is avoided. Align the flexible circuit board 5 with the card slot 25 on the placement surface 21. When the fastening member 3 is snap-connected to the main body base 1, the card slot 25 will cause the flexible circuit board 5 to firmly adhere to it. The snap connection action of the fastening member 3 and the main body base 1 keeps the flexible circuit board 5 on the card slot 25, completing the fixing process. When it is necessary to disassemble the flexible circuit board 5, it is necessary to release the snap connection between the fastening member 3 and the main body base 1. Remove the flexible circuit board 5 from the card slot 25 to complete the unloading process. In various electronic products (such as smartphones, computers, consumer electronics), the stable fixation of the flexible circuit board 5 is crucial for ensuring the electrical connection quality and device performance. In industrial equipment, especially equipment that requires frequent assembly and maintenance, stable circuit board positioning can improve assembly efficiency and maintenance convenience. Through actual assembly and testing, verify the effect of the card slot 25 design on the stability of the flexible circuit board 5 to ensure the reliability and accuracy of the connection. In multiple design examples, such as connectors and modules, a similar card slot 25 design is widely used, proving its effectiveness in improving the electrical connection stability and simplifying the installation process.

[0069] In a specific example, a plurality of fixing feet 4 are provided on a side of the main body base 1 facing away from the conductive terminal 2.

[0070] Specifically, these fixing feet 4 are protrusions on the side of the main body 1 facing away from the conductive terminals 2, typically made of metal or plastic. The shape and dimensions of the fixing feet 4 must be designed to take into account installation requirements and the device's support capabilities. The fixing feet 4 provide additional support for the electrical connector, helping to stabilize its installation position on the device or circuit board. By increasing the contact surface and securing points, the fixing feet 4 more securely secure the connector in its installed position during use. The fixing feet 4 help reduce displacement or movement of the connector due to vibration, shock, or other mechanical factors during use, ensuring connection stability. The support provided by the fixing feet 4 reduces the risk of poor contact or electrical problems caused by a loose or unstable connector. The design of the fixing feet 4 makes it easier to align and position the connector during installation, simplifying the assembly process. The fixing feet 4 serve as guides, helping the installer ensure accurate connector positioning. The fixing feet 4 can withstand certain mechanical stresses, such as vibration and shock, reducing damage to the connector and its components. The fixing feet 4 distribute pressure and stress at multiple, evenly distributed points, avoiding structural damage caused by excessive pressure at a single point.

[0071] In one embodiment, the fixing legs 4 are made of metal.

[0072] Specifically, metal materials generally have higher mechanical strength and hardness and can withstand greater forces and pressures. This enables the metal fixing feet 4 to provide more stable support and fixing during the installation process. Metal is more wear-resistant than materials such as plastic, can maintain good stability and performance during long-term use, and is not easily affected by physical wear. Metal materials have good thermal conductivity and can effectively dissipate heat. For electrical connectors, especially in high-power or high-temperature applications, it can help reduce overheating problems caused by heat accumulation and improve the overall reliability of the equipment. The elasticity and strength of the metal make it more stable when subjected to vibration and impact. This is especially important for application scenarios that need to withstand mechanical stress and vibration, and can effectively prevent the connector from loosening or falling off.

[0073] In a specific example, a positioning support platform 12 is provided on the main base 1, and the flexible circuit board 5 is locked with the positioning support platform 12, and the positioning support platform 12 limits the flexible circuit board 5 from moving in a direction parallel to the placement surface 21;

[0074] When the fastener 3 is engaged with the main body base 1 , the positioning support platform 12 is located between the fastener 3 and the conductive terminal 2 . The positioning support platform 12 is located on the rotation path of the fastener 3 , and the positioning support platform 12 limits the rotation of the fastener 3 .

[0075] Specifically, the positioning support platform 12 plays a positioning role on the main body base 1. It provides an accurate position for the flexible circuit board 5, enabling it to stably adhere to the placement surface 21. The engagement between the flexible circuit board 5 and the positioning support platform 12 can prevent the circuit board from moving during installation or use, ensuring the correct docking of the electrical connector. Through the positioning support platform 12, the movement of the flexible circuit board 5 is restricted in the direction parallel to the placement surface 21. This means that even if an external force acts during use, the circuit board will not cause poor contact or loose installation due to offset. During the installation of the electrical connector, the positioning support platform 12 ensures the precise alignment of the flexible circuit board 5, avoiding contact problems caused by inaccurate docking. This is crucial for the electrical performance and mechanical stability of the connector. When the fastening member 3 is snap-connected to the main body base 1, the positioning support platform 12 is located on the rotation path of the fastening member 3. This design helps to limit the rotation range of the fastening member 3, ensuring that its rotation action does not exceed the designed range, thereby avoiding damage caused by excessive or improper rotation. The positioning support platform 12 can control the rotation force and angle of the fastening member 3, ensuring that the fastening member 3 applies force evenly during the snap connection process, thereby optimizing the stability and reliability of the connection. By restricting the rotation of the fastening member 3, the positioning support platform 12 prevents the improper rotation of the fastening member 3 during installation, reducing the risk of connector jamming or damage caused by improper rotation. Ensuring the stability of the fastening member 3 during installation helps to improve the reliability of the entire connection system.

[0076] In a specific example, the fixed leg 4 has a sliding connection portion 41, and the main body base 1 has a sliding track 13 corresponding to the sliding connection portion 41. The fixed leg 4 is slidably connected to the sliding track 13 through the sliding connection portion 41;

[0077] The sliding connection portion 41 has a boss 411, and the boss 411 abuts against the sliding track 13.

[0078] Specifically, the sliding connection 41 refers to the structure on the fixed leg 4 that mates with the sliding track 13 within the main body base 1. This structural design allows the fixed leg 4 to move freely in a specific direction within the sliding track 13. The main function of the sliding connection 41 is to provide an adjustable connection, allowing the fixed leg 4 to be moved to the desired position within the main body base 1, thereby achieving precise adjustment and positioning. The sliding track 13 is a structure within the main body base 1 that accommodates and guides the sliding connection 41. Its design allows the sliding connection 41 to slide smoothly within it. The main function of the sliding track 13 is to provide a smooth channel, ensuring that the fixed leg 4 remains stable during movement and preventing deviation or shaking during sliding. The boss 411 is a protrusion on the sliding connection 41 that mates with a groove in the sliding track 13. It is typically a protrusion designed for a snap-on connection. The main function of the boss 411 is to provide a locking point, ensuring that the sliding connection 41 is held in a specific position within the sliding track 13. The mating of boss 411 with sliding track 13 means that boss 411 abuts within sliding track 13, that is, boss 411 is in close contact with the inner wall or corresponding portion of sliding track 13. This abutment helps stabilize the position of fixing foot 4 within the track, preventing any accidental displacement during sliding. The design of boss 411 also allows it to snap into place within sliding track 13, further enhancing the stability of fixing foot 4. This snap-fit ensures that fixing foot 4 will not come off the track due to vibration or external forces during sliding.

[0079] The above is only an implementation method of the present application. It should be pointed out that for ordinary technicians in this field, improvements can be made without departing from the creative concept of the present application, but these all fall within the scope of protection of the present application.

Claims

1. An FPC electrical connector for connecting a flexible circuit board, characterized in that, The fpc electrical connector comprises: Main base; A conductive terminal is provided on the main body base, the conductive terminal is electrically connected to the flexible circuit board, and the conductive terminal has a placement surface, and the flexible circuit board is placed on the placement surface; A fastening part, wherein the fastening part is rotatably connected to the conductive terminal. When the fastening part is rotated to engage with the main body base, the flexible circuit board is fixed between the placement surface and the fastening part. The minimum distance a from the fastening part to the placement surface and the thickness b of the flexible circuit board satisfy the relationship: 0.03mm>ba>0.01mm.

2. The FPC electrical connector according to claim 1, wherein The conductive terminal has a plurality of rotating heat dissipation parts, which are arranged at equal intervals, and the fastening member is rotatably connected to the plurality of rotating heat dissipation parts; The distance between the rotating heat dissipating parts in their arrangement direction is defined as distance c, and the distance between two adjacent rotating heat dissipating parts is defined as distance d. c and d satisfy the relationship: 0.3mm>c>0.1mm, 0.5mm>dc≥0.3mm.

3. The FPC electrical connector according to claim 2, wherein The fastening member has a rotating shaft portion, and the rotating heat dissipation portion is provided with a rotating hole corresponding to the rotating shaft portion; The diameter r of the rotating hole and the diameter R of the rotating shaft satisfy the relationship: 0.7<r:R<0.

9.

4. The FPC electrical connector according to claim 3, wherein An expansion groove is provided on the rotating heat dissipation portion. The expansion groove passes through the rotating heat dissipation portion in the arrangement direction of the rotating heat dissipation portion, and one end of the expansion groove is connected to the rotating hole.

5. The FPC electrical connector according to claim 1, wherein The conductive terminal is provided with a locking protrusion, and the main body base is provided with a locking groove. The locking protrusion is locked in the locking groove to fixedly connect the conductive terminal and the main body base.

6. The FPC electrical connector according to claim 1, wherein The placement surface is provided with a positioning platform, and when the fastening member is engaged with the main body base, the flexible circuit board is attached to the positioning platform.

7. The FPC electrical connector according to claim 1, characterized in that, A plurality of fixing legs are provided on a side of the main body base facing away from the conductive terminal.

8. The FPC electrical connector according to claim 7, wherein The fixing legs are made of metal.

9. The FPC electrical connector according to claim 1, wherein A positioning support platform is provided on the main body base, and the flexible circuit board is engaged with the positioning support platform, and the positioning support platform limits the flexible circuit board from moving in a direction parallel to the placement surface; When the fastening member is engaged with the main body base, the positioning support platform is located between the fastening member and the conductive terminal. The positioning support platform is located on the rotation path of the fastening member, and the positioning support platform limits the rotation of the fastening member.

10. The FPC electrical connector according to claim 7, wherein, The fixed foot has a sliding connection portion, and the main body base has a sliding track corresponding to the sliding connection portion, and the fixed foot is slidably connected to the sliding track through the sliding connection portion; The sliding connection portion is provided with a boss, and the boss abuts against the sliding track.

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