Flexible circuit board connector

Abstract

The utility model relates to the technical field of connector, specifically relates to a soft circuit board connector, including concave circuit board casing, two guide insertion slot are set up in concave circuit board casing, two guide insertion slot are slidably connected with soft circuit board body, the top of soft circuit board body is all fixedly connected with the limit support board, and the utility model relates to torque spring, rotary lever, limit block, clamping plate, and the clamping plate is driven to rotate through torque spring elasticity, realizes the automatic joint of limit support board, when inserting the soft circuit board, limit support board pushes the compression torque spring of clamping plate, when the bayonet and limit block are aligned, spring elasticity drives the automatic clamping of clamping block into the bayonet, does not need manual pressing, avoids the circuit wear and tear caused by rigid extrusion.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically to a flexible circuit board connector. Background Technology

[0002] In the development of electronic devices, flexible circuit boards (PCBs) have become widely used in numerous fields, including consumer electronics (such as smartphones and tablets), smart homes, automotive electronics, and medical devices, due to their advantages such as thinness, flexibility, high wiring density, and ability to adapt to complex spatial layouts. To enable signal transmission and power supply between PCBs and other electronic components such as circuit boards and chips, PCB connectors have become indispensable key components.

[0003] A search revealed Chinese patent publication number "CN211480332U" describes a flexible circuit board connector, including a fixed outer shell and a fixed cover plate. The protective pad of the fixed outer shell is connected to the fixed cover plate via a pivot. A terminal slot is provided in the center of the front end of the fixed outer shell. The protective device of this utility model consists of a protective cover, a rubber inner ring, and a sleeve interface. By grasping the protective cover by hand, the protective cover is fitted onto the fixed outer shell through the sleeve interface, covering and protecting the contact copper sheet group of the terminal slot. The rubber inner ring fixes the protective cover to the fixed outer shell, making it difficult to fall off. When connecting the terminal slot, the protective cover is grasped by hand and force is applied outward to detach the protective cover from the fixed outer shell. The beneficial effect is that the protective device protects the contact copper sheet group of the terminal slot during connector installation, preventing the contact copper sheet group from being bumped and bent before the terminal slot is installed. Moreover, during installation, the transparency of the protective cover prevents contact with the contact copper sheet.

[0004] The aforementioned patent protects the contact copper plate group of the terminal slot during connector installation using a protective device, preventing the contact copper plate group from being bumped and bent before the terminal slot is installed. Moreover, the transparency of the protective cover can prevent contact with the contact copper plate during installation. However, the above patent has certain limitations in use. Using a rigid fixing cover to fix the flexible circuit board can easily lead to wear and breakage of the conductive lines of the flexible circuit board, which significantly shortens its service life, especially during frequent plugging and unplugging. In addition, it is easy to cause displacement during fixing, and lacks effective guidance and positioning for the flexible circuit board. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a flexible circuit board connector that can effectively solve the problems of using a rigid fixing cover to fix the flexible circuit board, which can easily lead to wear and breakage of the conductive lines of the flexible circuit board, especially when frequently plugged and unplugged, significantly shortening its service life, and causing misalignment during fixing, lacking effective guidance and positioning of the flexible circuit board.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a flexible circuit board connector, comprising:

[0008] A concave circuit board housing has two guide slots inside, and a flexible circuit board body is slidably connected to the two guide slots. The top of each flexible circuit board body is fixedly connected to a limiting support plate. The far ends of the two limiting support plates are provided with slots. The flexible circuit board body and the concave circuit board housing are electrically connected. The concave circuit board housing is electrically connected to an external power supply. Both ends of the concave circuit board housing are provided with slots, and each slot is provided with a locking plate.

[0009] It also includes two sets of elastic locking mechanisms, which are respectively located between two slots and are used to automatically position the two limiting plates.

[0010] Furthermore, one set of the locking mechanisms includes:

[0011] Two limiting holes are respectively opened on the inner walls of both sides of one of the slots;

[0012] Two torque springs, one end of each of the two torque springs being fixedly connected to the inner wall of the near end of the two slots respectively;

[0013] Two rotating rods are rotatably connected to the inner walls of two limiting holes, respectively. Two torque springs are respectively sleeved on the outer surfaces of the two rotating rods. The two rotating rods are fixedly connected to both ends of one of the clamping plates, and the other ends of the two torque springs are fixedly connected to both ends of one of the clamping plates.

[0014] A limiting block is fixedly connected to one side of the card plate, and the limiting block is movably engaged in one of the limiting support plates;

[0015] The mounting slot is located on the left side of the bottom inner wall of the concave circuit board housing;

[0016] Two sets of elastic buffer components are respectively disposed in two mounting slots, and the two sets of elastic buffer components are used to elastically support the flexible circuit board body.

[0017] Furthermore, one set of the said resilient buffer components includes:

[0018] Two positioning holes, both of which are formed on the lower inner wall of the mounting groove;

[0019] Two limiting rods are slidably connected to two positioning holes respectively;

[0020] A buffer block, which is fixedly connected to the top of two limiting rods;

[0021] Two strong springs are respectively sleeved on the outer surface of the two limiting rods. One end of each of the two strong springs is fixedly connected to the lower inner wall of the mounting groove, and the other end of each of the two strong springs is fixedly connected to the bottom end of the buffer block.

[0022] Furthermore, connecting plates are fixedly connected to both ends of the concave circuit board housing.

[0023] Furthermore, four limiting grooves are provided on the outer surface of the concave circuit board housing, and limiting strips are slidably connected in the four limiting grooves. Protective covers are fixedly connected to the outer surfaces of the four limiting strips, and the protective covers are sleeved on the outer surface of the concave circuit board housing.

[0024] Furthermore, the bottom corner of the flexible circuit board body is chamfered at 35°, and the bottom outer surface of the flexible circuit board body is pressed down and slidably connected to the adjacent ends of the two cards.

[0025] Beneficial effects

[0026] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0027] I. Composed of a torque spring, a rotating rod, a limiting block, and a locking plate, the locking plate is driven to rotate by the elastic force of the torque spring, achieving automatic locking of the limiting support plate. When a flexible circuit board is inserted, the limiting support plate pushes the locking plate to compress the torque spring. When the locking slot is aligned with the limiting block, the spring force drives the block to automatically lock into the slot, eliminating the need for manual pressing and avoiding circuit wear caused by hard compression. To disassemble, simply push the locking plate open to overcome the spring force to release the lock, making operation effortless. In the locked state, the torque spring maintains its elastic force to ensure a firm connection and prevent loosening due to vibration.

[0028] 2. A strong spring, a limiting rod, and a buffer block absorb impact force through spring compression deformation. After the flexible circuit board is inserted, its bottom is pressed against the buffer block. The buffer block compresses the strong spring through the limiting rod, forming elastic support. When subjected to vibration or insertion / removal force, the spring deformation absorbs energy, reducing direct impact on the circuit board and lowering the risk of circuit breakage. The spring elastic force adapts to circuit boards of different thicknesses, avoiding excessive compression, making it suitable for frequent insertion / removal scenarios. The elastic support force provided by the strong spring is balanced with the weight of the flexible circuit board itself.

[0029] 3. The two guide slots inside the concave circuit board housing provide an insertion track for the flexible circuit board; the bottom corners of the circuit board are chamfered at 35°, and the inner wall of the guide slot restricts the movement trajectory of the circuit board, ensuring precise alignment along the preset direction during insertion and avoiding poor contact caused by lateral offset. The chamfer design reduces insertion resistance and prevents hard impacts from damaging the edge of the circuit board or the internal structure of the connector, improving the smoothness of insertion and removal. The protective cover prevents dust and debris from entering the connector, avoiding contact point contamination that affects conductivity and extending service life. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a perspective view of the present utility model;

[0032] Figure 2 This is an exploded view of the present invention;

[0033] Figure 3 This is a first sectional view of the present invention;

[0034] Figure 4 This is a second sectional view of the present invention;

[0035] Figure 5 In this utility model Figure 4 A magnified view of part A;

[0036] Figure 6 In this utility model Figure 4 A magnified view of section B.

[0037] Reference numerals in the attached drawings: 1. Concave circuit board housing; 101. Limiting groove; 2. Connecting plate; 3. Protective cover; 301. Limiting strip; 4. Limiting block; 5. Limiting support plate; 6. Flexible circuit board body; 7. Clamping plate; 8. Torque spring; 9. Clamping slot; 10. Mounting slot; 11. Positioning hole; 12. Limiting rod; 13. Strong spring; 14. Buffer block; 15. Limiting hole; 16. Rotating rod. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0039] The present invention will be further described below with reference to the embodiments.

[0040] See attached document Figures 1-4 A flexible circuit board connector, comprising:

[0041] The concave circuit board housing 1 has two guide slots inside, and a flexible circuit board body 6 is slidably connected in the two guide slots. The top of the flexible circuit board body 6 is fixedly connected to a limiting support plate 5. The far ends of the two limiting support plates 5 are provided with a bayonet. The flexible circuit board body 6 and the concave circuit board housing 1 are electrically connected. The concave circuit board housing 1 is electrically connected to an external power supply. Both ends of the concave circuit board housing 1 are provided with a slot 9, and a card plate 7 is provided in each of the two slots 9.

[0042] It also includes two sets of elastic locking mechanisms, which are respectively located between two slots 9, and are used to automatically position the two limit plates 5.

[0043] In this embodiment, the concave circuit board housing 1 serves as the basic structure of the flexible circuit board connector, supporting and protecting the internal components. Two guide slots inside provide a precise insertion track for the flexible circuit board body 6, acting as a guide to ensure accurate installation. Simultaneously, the concave circuit board housing 1 acts as a carrier for electrical connections, realizing the electrical connection between the flexible circuit board body 6 and the external power supply, and is the key channel for the entire connector to achieve signal and power transmission functions.

[0044] The guide slot is slidably connected to the flexible circuit board body 6. By restricting the movement direction of the flexible circuit board, it ensures that it will not deviate during insertion and use, thus guaranteeing the accuracy of the connection between the flexible circuit board and other components and ensuring the stability of the electrical connection.

[0045] The flexible circuit board body 6 is the core component of the connector for achieving electrical connections, used to transmit signals and power. Through electrical connection with the concave circuit board housing 1, it transmits power from an external power source to other devices, and can also transmit signals generated by the devices to other circuit boards or components.

[0046] The limiting support plate 5 is fixedly connected to the top of the flexible circuit board body 6, serving as a mechanical limit to prevent the flexible circuit board body 6 from being excessively inserted into the concave circuit board housing 1, thus avoiding damage to the internal structure. The bayonet opening at its far end cooperates with the subsequent elastic locking mechanism to achieve automatic positioning and fixation of the flexible circuit board body 6, enhancing the stability of the connection.

[0047] The slots 9 are located at both ends of the concave circuit board housing 1, providing installation space for the card plate 7 and the elastic locking mechanism. When the elastic locking mechanism is working, it works in conjunction with other components to position and fix the limiting support plate 5, ensuring the stability of the overall connector structure.

[0048] The card plate 7 is located in the card slot 9. Under the action of the elastic locking mechanism, it can cooperate with the card slot of the limiting support plate 5 to lock the limiting support plate 5, thereby firmly fixing the flexible circuit board body 6 in the concave circuit board housing 1 to prevent it from loosening or falling off.

[0049] Two sets of elastic locking mechanisms are respectively installed in two slots 9, and their main function is to automatically position the two limiting support plates 5. When the flexible circuit board body 6 is inserted into the concave circuit board housing 1, the elastic locking mechanism uses its own elastic force to push the locking plate 7, so that it is tightly engaged with the locking slot of the limiting support plate 5, thereby automatically locking the flexible circuit board body 6. When it is necessary to disassemble the flexible circuit board, the elastic force of the elastic locking mechanism can be overcome, and the locking plate 7 can be easily separated from the locking slot, so as to complete the insertion and removal operation of the flexible circuit board conveniently and quickly, while ensuring the stability and reliability of the connection.

[0050] Please refer to the details. Figures 1-4 One of the locking mechanisms includes:

[0051] Two limiting holes 15 are respectively opened on the inner walls of both sides of one of the slots 9;

[0052] Two torque springs 8, one end of each torque spring 8 is fixedly connected to the inner wall of the near end of each of the two slots 9;

[0053] Two rotating rods 16 are rotatably connected to the inner walls of two limiting holes 15 that are close to each other. Two torque springs 8 are respectively sleeved on the outer surfaces of the two rotating rods 16. The two rotating rods 16 are fixedly connected to both ends of one of the clamping plates 7. The other ends of the two torque springs 8 are respectively fixedly connected to both ends of one of the clamping plates 7.

[0054] Limiting block 4 is fixedly connected to one side of the card plate 7, and the limiting block 4 is movably engaged in one of the limiting support plates 5;

[0055] Mounting slot 10 is formed on the bottom inner wall of the concave circuit board housing 1 on the left side;

[0056] Two sets of elastic buffer components are respectively located in two mounting slots 10. The two sets of elastic buffer components are used to elastically support the flexible circuit board body 6.

[0057] In this embodiment: when the flexible circuit board body 6 is inserted into the guide slot of the concave circuit board housing 1, as the flexible circuit board body 6 goes deeper, the limiting support plate 5 at its top gradually approaches the locking plate 7. At this time, the limiting support plate 5 pushes the locking plate 7, causing the rotating rod 16 to rotate within the limiting hole 15, while simultaneously compressing the torque spring 8, which stores elastic potential energy. When the locking slot of the limiting support plate 5 aligns with the limiting locking block 4, the elastic force of the torque spring 8 pushes the locking plate 7 to rotate in the opposite direction, causing the limiting locking block 4 to engage within the locking slot of the limiting support plate 5, thereby firmly locking the flexible circuit board body 6 within the concave circuit board housing 1, achieving automatic positioning and fixation.

[0058] During use, if the connector is subjected to external vibration or impact, the elastic buffer component will absorb and disperse the external force through its own elastic deformation, reducing the impact on the flexible circuit board body 6 and protecting its conductive lines.

[0059] When it is necessary to disassemble the flexible circuit board body 6, an external force is applied to push the locking plate 7, overcoming the elastic force of the torque spring 8, causing the rotating rod 16 to rotate again. The limiting locking block 4 disengages from the locking slot of the limiting support plate 5, at which point the flexible circuit board body 6 can be easily pulled out. After being pulled out, the torque spring 8 returns to its original state, causing the locking plate 7 to reset, awaiting the next insertion and locking of the flexible circuit board body 6.

[0060] Please refer to the details. Figures 1-3 One set of elastic buffer components includes:

[0061] Two positioning holes 11 are provided on the lower inner wall of the mounting groove 10;

[0062] Two limiting rods 12 are slidably connected to two positioning holes 11 respectively;

[0063] Buffer block 14 is fixedly connected to the top of the two limiting rods 12;

[0064] Two strong springs 13 are respectively sleeved on the outer surface of the two limiting rods 12. One end of each strong spring 13 is fixedly connected to the lower inner wall of the mounting groove 10, and the other end of each strong spring 13 is fixedly connected to the bottom end of the buffer block 14.

[0065] In this embodiment: when the flexible circuit board body 6 is inserted into the concave circuit board housing 1 and placed on the buffer block 14, the buffer block 14, under the gravity of the flexible circuit board body 6, drives the limiting rod 12 to slide downward along the positioning hole 11, compressing the strong spring 13. The strong spring 13 stores elastic potential energy. At this time, the elastic support force provided by the strong spring 13 and the gravity of the flexible circuit board body 6 reach a balanced state, realizing stable support for the flexible circuit board body 6.

[0066] Please refer to the details. Figures 1-4 Both ends of the concave circuit board housing 1 are fixedly connected to connecting plates 2.

[0067] In this embodiment, the connecting plates 2, which are fixedly connected to both ends of the concave circuit board housing 1, provide additional mounting points for the entire connector. Through the connecting plates 2, the concave circuit board housing 1 can be securely installed in a specific location on the electronic device, ensuring that the connector will not easily shift due to external forces during device operation, and providing basic support for the stable connection of the internal flexible circuit board body 6.

[0068] Please refer to the details. Figures 1-4 The outer surface of the concave circuit board housing 1 is provided with four limiting grooves 101, and limiting strips 301 are slidably connected in the four limiting grooves 101. Protective covers 3 are fixedly connected to the outer surface of the four limiting strips 301, and the protective covers 3 are sleeved on the outer surface of the concave circuit board housing 1.

[0069] In this embodiment, four limiting grooves 101 on the outer surface of the concave circuit board housing 1 are slidably connected to limiting strips 301. The limiting strips 301 are fixed to the protective cover 3, allowing the protective cover 3 to be smoothly fitted onto the concave circuit board housing 1 along the limiting grooves 101. The protective cover 3 can protect the concave circuit board housing 1 and its internal structure, preventing external dust and debris from entering the connector and affecting its connection performance. At the same time, the cooperation between the limiting grooves 101 and the limiting strips 301 ensures that the protective cover 3 is installed in an accurate position, preventing it from shaking or falling off, thus improving the protective effect and the overall stability of the connector structure.

[0070] Please refer to the details. Figures 1-3 The bottom corner of the flexible circuit board body 6 is chamfered at 35°, and the bottom outer surface of the flexible circuit board body 6 is pressed down and slidably connected to the near ends of the two card plates 7.

[0071] In this embodiment, the bottom corners of the flexible circuit board body 6 are chamfered at 35° to facilitate smooth insertion into the concave circuit board housing 1, reducing resistance during insertion and preventing damage to the internal structure of the connector and the flexible circuit board itself due to forced insertion. After insertion, the outer surface of the bottom end of the flexible circuit board body 6 is pressed down and slidably connected to the near ends of the two locking plates 7. Under the action of the elastic locking mechanism, the limiting block 4 on the locking plate 7 cooperates with the limiting support plate 5 at the top of the flexible circuit board body 6 to lock it, realizing the precise positioning and firm fixation of the flexible circuit board body 6 in the connector, ensuring the stability and reliability of the electrical connection.

[0072] Working principle: The bottom edge of the flexible circuit board body 6, with a 35° chamfered corner, is aligned with the guide slot inside the concave circuit board housing 1 and slowly pushed in. The inner wall of the guide slot restricts the movement trajectory of the flexible circuit board body 6 to prevent deviation. During insertion, the limiting support plate 5 at the top of the flexible circuit board body 6 pushes the locking plate 7 into the locking slot 9, causing the rotating rod 16 to rotate within the limiting hole 15 and compress the torque spring 8 sleeved outside the rotating rod 16 to store elastic potential energy. When the locking slot of the limiting support plate 5 aligns with the limiting locking block 4 on one side of the locking plate 7, the torque spring 8 releases its elastic force to push the locking plate 7 to rotate in the opposite direction, so that the limiting locking block 4 accurately engages in the locking slot, achieving automatic positioning of the flexible circuit board body 6. At the same time, the bottom of the flexible circuit board body 6 contacts the buffer block 14. The buffer block 14, through the limiting rod 12 fixedly connected to its bottom end, compresses the strong spring 13 sleeved outside the limiting rod 12, forming elastic support, absorbing the impact force during insertion, removal, or vibration, and reducing wear on the conductive lines of the flexible circuit board body 6. When disassembly is required, manually push the retaining plate 7 outward to overcome the elastic force of the torque spring 8, causing the limiting retaining block 4 to disengage from the retaining plate 5, allowing the flexible circuit board body 6 to be pulled out. After being pulled out, the torque spring 8 drives the retaining plate 7 and the rotating rod 16 to reset. In addition, the connecting plates 2 fixedly connected to both ends of the concave circuit board housing 1 can be fixed to the electronic equipment, enhancing the overall structural strength of the connector and preventing displacement; the limiting groove 101 on the outer surface of the concave circuit board housing 1 is slidably connected to the limiting strip 301 on the protective cover 3, so that the protective cover 3 is fitted over the concave circuit board housing 1, preventing dust and debris from entering the interior and ensuring connection stability.

[0073] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A flexible circuit board connector, comprising, characterized in that: A concave circuit board housing (1) has two guide slots inside, and a flexible circuit board body (6) is slidably connected in the two guide slots. The top of the flexible circuit board body (6) is fixedly connected to a limiting support plate (5). The far ends of the two limiting support plates (5) are provided with slots. The flexible circuit board body (6) and the concave circuit board housing (1) are electrically connected. The concave circuit board housing (1) is electrically connected to an external power supply. The two ends of the concave circuit board housing (1) are provided with slots (9), and each of the two slots (9) is provided with a card plate (7). It also includes two sets of elastic locking mechanisms, which are respectively located between two slots (9) and are used to automatically position the two limiting support plates (5).

2. A flexible circuit board connector according to claim 1, characterized in that, One set of the locking mechanisms includes: Two limiting holes (15) are respectively opened on the inner walls of both sides of one of the slots (9); Two torque springs (8), one end of each of the two torque springs (8) is fixedly connected to the inner wall of the near end of the two slots (9); Two rotating rods (16) are rotatably connected to the inner walls of two limiting holes (15) respectively. Two torque springs (8) are respectively sleeved on the outer surfaces of the two rotating rods (16). The two rotating rods (16) are fixedly connected to both ends of one of the clamping plates (7). The other ends of the two torque springs (8) are fixedly connected to both ends of one of the clamping plates (7). Limiting block (4), the limiting block (4) is fixedly connected to one side of the card plate (7), and the limiting block (4) is movably engaged in one of the limiting support plates (5); Mounting groove (10) is formed on the left side of the bottom inner wall of the concave circuit board housing (1); Two sets of elastic buffer components are respectively disposed in two mounting slots (10) and are used to elastically support the flexible circuit board body (6).

3. A flexible circuit board connector according to claim 2, characterized in that, One set of the elastic buffer components includes: Two positioning holes (11) are provided on the lower inner wall of the mounting groove (10); Two limiting rods (12) are slidably connected in two positioning holes (11); A buffer block (14) is fixedly connected to the top of two limiting rods (12); Two strong springs (13) are respectively sleeved on the outer surface of the two limiting rods (12). One end of each of the two strong springs (13) is fixedly connected to the lower inner wall of the mounting groove (10), and the other end of each of the two strong springs (13) is fixedly connected to the bottom end of the buffer block (14).

4. A flexible circuit board connector according to claim 3, characterized in that, Both ends of the concave circuit board housing (1) are fixedly connected to connecting plates (2).

5. A flexible circuit board connector according to claim 4, characterized in that, The outer surface of the concave circuit board housing (1) is provided with four limiting grooves (101), and limiting strips (301) are slidably connected in the four limiting grooves (101). A protective cover (3) is fixedly connected to the outer surface of the four limiting strips (301), and the protective cover (3) is sleeved on the outer surface of the concave circuit board housing (1).

6. A flexible circuit board connector according to claim 5, characterized in that, The bottom corner of the flexible circuit board body (6) is chamfered at 35°, and the bottom outer surface of the flexible circuit board body (6) is pressed down and slidably connected to the close ends of the two card plates (7).

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