Flexible wiring board
By designing a fixed and movable plate structure on the flexible circuit board, the problem of conductive pad corrosion and damage is solved, thereby improving signal transmission stability and protection effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN SAN TE XING ELECTRONICS CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-14
AI Technical Summary
The conductive pads of existing flexible circuit boards are easily corroded by sulfides when exposed to air for a long time, leading to the formation of an oxide film, increasing contact resistance, affecting signal transmission stability, and being easily damaged during maintenance.
A flexible circuit board structure was designed, including a fixed base plate, a fixed top plate, a movable base plate, and a movable top plate. Through structures such as limiting holes, slots, locking edges, and semi-circular inserts, the conductive pads are protected to ensure automatic protection during insertion and automatic retraction when pulled out.
It effectively reduces the risk of corrosion of the conductive pads, improves signal transmission stability, and protects the conductive pads from damage during insertion and removal.
Smart Images
Figure CN224502440U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circuit board technology, and in particular to a flexible circuit board. Background Technology
[0002] Flexible circuit boards based on PET are flexible electronic components with conductive lines made on a PET film. Through etching and deposition processes, copper foil lines are made on the PET substrate. Usually, a cover film is used to protect the lines, which can realize the bending and folding function of the circuit board.
[0003] The conductive pads on existing flexible circuit boards are generally not protected at one end. The conductive pads are usually made of gold-plated material. Although gold has strong corrosion resistance, long-term exposure may still cause it to absorb impurities such as sulfides from the air, forming weak electrochemical corrosion. This leads to the formation of an oxide film on the surface of the gold plating layer, increasing contact resistance and affecting the stability of signal transmission. Furthermore, when external equipment is being repaired, one end of the flexible circuit board may be removed from the interface. Therefore, the end of the flexible circuit board with the conductive pad may come into contact with other objects and be damaged, thus affecting the normal use of the flexible circuit board. Utility Model Content
[0004] The purpose of this invention is to provide a flexible circuit board that can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A flexible circuit board includes a flexible circuit board with multiple conductive pads fixedly mounted on one end. A fixed base plate and a movable base plate are respectively disposed on the bottom of the flexible circuit board near the conductive pads. A fixed top plate and a movable top plate are respectively disposed on the top of the flexible circuit board near the conductive pads. The fixed base plate and the fixed top plate are fixedly connected to each other, and the movable base plate and the movable top plate are fixedly connected to each other. A first fixed seat is fixedly mounted on the top of the fixed top plate, and a second fixed seat is fixedly mounted on the top of the movable top plate. A semi-circular insert is fixedly mounted on one side of the second fixed seat.
[0007] As a further preferred embodiment of this utility model, a plurality of limiting holes are provided in the flexible circuit board near the conductive pad. The provision of multiple limiting holes in the flexible circuit board can provide a limiting basis for fixing the base plate and the top plate.
[0008] As a further preferred embodiment of this utility model, a first locking edge is fixedly installed on both sides of the top of the fixed base plate, and multiple positioning grooves are opened on both sides of the top of the fixed base plate near the first locking edge.
[0009] As a further preferred embodiment of this utility model, the bottom of the fixed top plate is provided with a first slot on both sides. A plurality of limiting shafts are fixedly installed on the bottom of the fixed top plate near the first slot. The first slot is engaged in the corresponding first edge, and the bottom of the limiting shaft passes through the corresponding limiting hole and is inserted into the corresponding positioning groove. The fixed bottom plate and the fixed top plate are engaged with each other through the first edge and the first slot, so that the combination of the fixed bottom plate and the fixed top plate is limited and fixed on the outside of the flexible circuit board, providing a basic carrier for the movement of the movable bottom plate and the movable top plate.
[0010] As a further preferred embodiment of this utility model, two sliding grooves are provided in the first fixed base, a limiting baffle is fixedly installed on the inner side of the sliding groove, and a guide shaft is fixedly installed on the side of the sliding groove away from the limiting baffle.
[0011] As a further preferred embodiment of this utility model, a second locking edge is fixedly installed on both sides of the top of the movable base plate.
[0012] As a further preferred embodiment of this utility model, a second slot is provided on both sides of the bottom of the movable top plate. A limiting protrusion is fixedly installed on the side of the semi-circular insert rod away from the second fixed seat. The second slot is engaged with the corresponding limiting protrusion. The side of the semi-circular insert rod with the limiting protrusion is inserted into the corresponding sliding groove. A compression spring is also fitted on the guide shaft between the side of the sliding groove and the semi-circular insert rod. The movable bottom plate and the movable top plate are engaged with each other through the limiting protrusion and the second slot and are inserted into the outside of the flexible circuit board, thereby protecting the conductive pad. When the end of the flexible circuit board with the conductive pad is inserted into the external interface, the end of the flexible circuit board with the conductive pad can be automatically pushed out and inserted into the interface of the external device.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] In this invention, the combination of a fixed base plate and a fixed top plate, and the combination of a movable base plate and a movable top plate are respectively inserted and installed on the outside of the flexible circuit board. The movable base plate and the movable top plate protect the conductive pad at one end of the flexible circuit board. At the same time, when the end of the flexible circuit board with the conductive pad is inserted into the external interface, the movable base plate and the movable top plate can be made to abut against one side of the interface. The flexible circuit board drives the fixed base plate and the fixed top plate to move towards the movable base plate, so that the end of the flexible circuit board with the conductive pad is inserted into the interface. When the end of the flexible circuit board is pulled out of the interface, the spring on the outside of the guide shaft, the semi-circular insert rod, and the second fixed seat automatically move the end of the flexible circuit board with the conductive pad into the movable base plate and the movable top plate for protection. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0016] Figure 2 This is a schematic diagram showing the disassembled main structure of this utility model;
[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0018] Figure 4 This is a schematic diagram of the fixed top plate structure of this utility model;
[0019] Figure 5 for Figure 4 Enlarged view of point B in the middle;
[0020] Figure 6 This is a partial structural diagram of the fixed top plate of this utility model;
[0021] Figure 7 This is a schematic diagram of the movable top plate structure of this utility model.
[0022] In the diagram: 1. Flexible circuit board; 2. Conductive pad; 3. Fixed base plate; 4. Movable base plate; 5. Fixed top plate; 6. Movable top plate; 7. First fixed seat; 8. Second fixed seat; 9. Semi-circular insert rod; 10. Limiting hole; 11. First retaining edge; 12. Positioning groove; 13. Second retaining edge; 14. Sliding groove; 15. Limiting baffle; 16. Guide shaft; 17. First retaining groove; 18. Limiting shaft; 19. Limiting protrusion; 20. Second retaining groove. Detailed Implementation
[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0024] like Figures 1-7 As shown, the present invention provides a flexible circuit board, including a flexible circuit board 1. A plurality of conductive pads 2 are fixedly installed at one end of the flexible circuit board 1. A fixed base plate 3 and a movable base plate 4 are respectively provided at the bottom of the flexible circuit board 1 near the conductive pads 2. A fixed top plate 5 and a movable top plate 6 are respectively provided at the top of the flexible circuit board 1 near the conductive pads 2. The fixed base plate 3 and the fixed top plate 5 are fixedly connected to each other, and the movable base plate 4 and the movable top plate 6 are fixedly connected to each other. A first fixed seat 7 is fixedly installed on the top of the fixed top plate 5, and a second fixed seat 8 is fixedly installed on the top of the movable top plate 6. A semi-circular insert rod 9 is fixedly installed on one side of the second fixed seat 8.
[0025] like Figures 2-6As shown, multiple limiting holes 10 are provided in the flexible circuit board 1 near the conductive pad 2. These limiting holes 10 provide a limiting basis for the fixed base plate 3 and the fixed top plate 5. First retaining edges 11 are fixedly installed on both sides of the top of the fixed base plate 3. Multiple positioning grooves 12 are provided on both sides of the top of the fixed base plate 3 near the first retaining edges 11. First retaining slots 17 are provided on both sides of the bottom of the fixed top plate 5. Multiple limiting shafts 18 are fixedly installed on the bottom of the fixed top plate 5 near the first retaining slots 17. The first retaining slots 17 engage with the corresponding first retaining edges 11. Inside, the bottom of the limiting shaft 18 passes through the corresponding limiting hole 10 and is inserted into the corresponding positioning groove 12. The fixed base plate 3 and the fixed top plate 5 are engaged with each other by the first snap edge 11 and the first snap groove 17, so that the combination of the fixed base plate 3 and the fixed top plate 5 is fixed on the outside of the flexible circuit board 1, providing a basic carrier for the movement of the movable base plate 4 and the movable top plate 6. Two sliding grooves 14 are opened in the first fixed seat 7. The limiting baffle 15 is fixedly installed inside the sliding groove 14, and the guide shaft 16 is fixedly installed on the side of the sliding groove 14 away from the limiting baffle 15.
[0026] like Figure 2 , Figure 3 , Figure 5 , Figure 7 As shown, the movable base plate 4 has a second locking edge 13 fixedly installed on both sides of the top, and the movable top plate 6 has a second locking groove 20 opened on both sides of the bottom. The semi-circular insert rod 9 is fixedly installed with a limiting protrusion 19 on the side away from the second fixed seat 8. The second locking groove 20 is locked onto the corresponding limiting protrusion 19. The side of the semi-circular insert rod 9 with the limiting protrusion 19 is inserted into the corresponding slide groove 14. The guide shaft 16 located in the slide groove 14 and between the semi-circular insert rod 9 is also fitted with a compression spring. The movable base plate 4 and the movable top plate 6 are locked together by the limiting protrusion 19 and the second locking groove 20 and are inserted into the outside of the flexible circuit board 1, thereby protecting the conductive pad 2. When the end of the flexible circuit board 1 with the conductive pad 2 is inserted into the external interface, the end of the flexible circuit board 1 with the conductive pad 2 can be automatically pushed out and inserted into the interface of the external device.
[0027] It should be noted that this utility model is a flexible circuit board. When the end of the flexible circuit board 1 with the conductive pad 2 is not connected to an external interface, the conductive pad 2 at the top and bottom of one end of the flexible circuit board 1 can be protected by the movable base plate 4 and the movable top plate 6 respectively. The adhesive layers on both sides of the top of the movable base plate 4 and the bottom of the movable top plate 6 are in contact with the surface of the flexible circuit board 1, so that the conductive pad 2 is in a relatively closed environment, reducing contact with the external environment. When the end of the flexible circuit board 1 with the conductive pad 2 is connected to an external interface, the fixed base plate 3 and the fixed top plate 5 can be held with two fingers, and one side of the movable base plate 4 and the movable top plate 6 can be pressed against the interface side by the flexible circuit board 1. Then, the multiple limiting shafts 18 in the fixed base plate 3 and the fixed top plate 5 push one end of the flexible circuit board 1 towards the interface. Thus, the fixed top plate 5 drives the first fixed seat 7 to move, and the second fixed seat 7 moves towards the interface. A fixed base 7 drives the guide shaft 16 to move towards the second fixed base 8, so that the guide shaft 16 moves along the bottom of the corresponding semi-circular insert 9. At the same time, the compression spring on the outside of the guide shaft 16 is compressed, so that the fixed base plate 3 and the fixed top plate 5 cooperate with the limiting shaft 18 to push one end of the flexible circuit board 1 out of the cavity between the movable base plate 4 and the movable top plate 6 and insert it into the interface of the external device. Then, the limiting component in the interface limits and fixes the part of the flexible circuit board 1 inserted into the interface, thus completing the insertion of the flexible circuit board 1 into the external interface. When one end of the flexible circuit board 1 is pulled out from the external interface, the force of the compression spring on the outside of the two guide shafts 16 automatically pushes the first fixed base 7 and the semi-circular insert 9 in opposite directions, so that the end of the flexible circuit board 1 with the conductive pad 2 automatically moves into the space between the movable base plate 4 and the movable top plate 6 for protection.
[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A flexible circuit board, characterized in that: The system includes a flexible circuit board (1), one end of which is fixedly mounted with multiple conductive pads (2). A fixed base plate (3) and a movable base plate (4) are respectively provided at the bottom of the flexible circuit board (1) near the conductive pads (2). A fixed top plate (5) and a movable top plate (6) are respectively provided at the top of the flexible circuit board (1) near the conductive pads (2). The fixed base plate (3) and the fixed top plate (5) are fixedly connected to each other. The movable base plate (4) and the movable top plate (6) are fixedly connected to each other. A first fixed seat (7) is fixedly mounted on the top of the fixed top plate (5). A second fixed seat (8) is fixedly mounted on the top of the movable top plate (6). A semi-circular insert rod (9) is fixedly mounted on one side of the second fixed seat (8).
2. The flexible circuit board according to claim 1, characterized in that: Multiple limiting holes (10) are provided inside the flexible circuit board (1) near the conductive pad (2).
3. A flexible circuit board according to claim 2, characterized in that: The fixed base plate (3) has a first locking edge (11) fixedly installed on both sides of the top, and multiple positioning grooves (12) are opened on both sides of the top of the fixed base plate (3) near the first locking edge (11).
4. A flexible circuit board according to claim 3, characterized in that: The fixed top plate (5) has a first slot (17) on both sides of its bottom. A plurality of limiting shafts (18) are fixedly installed on the bottom of the fixed top plate (5) near the first slot (17). The first slot (17) is fitted into the corresponding first edge (11). The bottom of the limiting shaft (18) passes through the corresponding limiting hole (10) and is inserted into the corresponding positioning groove (12).
5. A flexible circuit board according to claim 1, characterized in that: Two sliding grooves (14) are provided in the first fixed seat (7). A limiting baffle (15) is fixedly installed inside the sliding groove (14), and a guide shaft (16) is fixedly installed on the side of the sliding groove (14) away from the limiting baffle (15).
6. A flexible circuit board according to claim 5, characterized in that: The movable base plate (4) has a second locking edge (13) fixedly installed on both sides of its top.
7. A flexible circuit board according to claim 5, characterized in that: The movable top plate (6) has a second slot (20) on both sides of its bottom. The semi-circular insert (9) is fixedly installed with a limiting protrusion (19) on the side away from the second fixed seat (8). The second slot (20) is engaged with the corresponding limiting protrusion (19). The side of the semi-circular insert (9) with the limiting protrusion (19) is inserted into the corresponding slide groove (14). The guide shaft (16) located between the side of the slide groove (14) and the semi-circular insert (9) is also fitted with a compression spring.