Connecting assembly of FPC circuit board

Abstract

The utility model relates to the field of flexible circuit boards, in particular to a connecting assembly of an FPC circuit board. The connecting assembly of the FPC circuit board comprises an FPC circuit board body, contact pins and a limiting unlocking ejection mechanism, one end of the FPC circuit board body is provided with a PCB, one end of the FPC circuit board body is fixedly connected with a plug, one side of the PCB is fixedly connected with a socket, the plug is connected with the socket in an inserted mode, the contact pins are installed in the plug at equal intervals, and the limiting unlocking ejection mechanism is connected with the PCB. Contact holes are formed in the socket at equal intervals, elastic pieces are symmetrically and fixedly connected into the contact holes, and a limiting unlocking ejection mechanism is arranged between the plug and the socket. According to the utility model, the limiting unlocking ejection mechanism is designed, a user only needs to simply press the C-shaped movable rod, rapid unlocking and ejection of the plug can be realized through the lever principle and the elastic force of the reset spring, tools or complex operation steps are not needed, and the use convenience and efficiency are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of flexible circuit board, especially relates to a FPC circuit board's connecting assembly. BACKGROUND

[0002] In the manufacturing and assembling process of electronic equipment, FPC (flexible circuit board) is widely used in various occasions needing flexible connection or limited space because of its good flexibility, thin volume and high-density wiring capacity, however, the reliable connection between FPC circuit board and other circuit boards (such as PCB circuit board) has been an important problem that engineers need to solve.

[0003] The traditional FPC and PCB connecting mode adopts welding or pressure connection technology, but these methods have the defects of complex operation, high cost and difficult maintenance, especially in the occasion needing frequent plugging or requiring quick replacement, the traditional connecting mode is particularly inconvenient, therefore, it is particularly important to develop a reliable and convenient FPC and PCB connecting assembly.

[0004] In the existing FPC and PCB connecting assembly, although some products adopt the plug-in mode of plug and socket, there are still deficiencies in the convenience of plugging, the stability of connection and the convenience of unlocking and ejecting, for example, some connecting assemblies need a large force in the plugging process, which is easy to damage the plug or socket, and some connecting assemblies lack stable limiting mechanism after connection, which is easy to loosen due to vibration or external force.

[0005] Therefore, it is necessary to provide a new FPC circuit board connecting assembly to solve the above technical problems. SUMMARY

[0006] To solve the above technical problems, the utility model provides a FPC circuit board connecting assembly.

[0007] The FPC circuit board connecting assembly provided by the utility model comprises a FPC circuit board body, a contact pin and a limiting unlocking and ejecting mechanism, one end of the FPC circuit board body is provided with a PCB circuit board, one end of the FPC circuit board body is fixedly connected with a plug, one side of the PCB circuit board is fixedly connected with a socket, the plug is plugged with the socket, the plug is internally installed with contact pins at equal intervals, the socket is internally provided with contact holes at equal intervals, the contact holes are internally fixedly connected with elastic sheets in pairs, and the limiting unlocking and ejecting mechanism is arranged between the plug and the socket.

[0008] Preferably, the limiting unlocking and ejecting mechanism comprises a clamping groove, a C-shaped movable rod, a slope, a reset spring, a Z-shaped bent plate, a limiting spring, a trapezoidal plug and a pushing block, the two sides of the plug are symmetrically provided with the clamping groove, the inside of the socket is slidably connected with the C-shaped movable rod, the bottom of the two ends of the C-shaped movable rod is provided with the slope, the inside of the socket is fixedly connected with the reset spring, the top of the two reset springs is fixedly connected with the bottom of the C-shaped movable rod, the inside of the socket is rotatably connected with the Z-shaped bent plate below the C-shaped movable rod, the inner wall of the socket is fixedly connected with the limiting spring near the clamping groove, the inner wall of the socket is slidably connected with the trapezoidal plug, one end of the two trapezoidal plugs is fixedly connected with one end of the limiting spring, the other end of the two trapezoidal plugs is clamped with the clamping groove, one side of the trapezoidal plug is fixedly connected with the pushing block, and the pushing block is below the C-shaped movable rod.

[0009] Preferably, the power arm of the Z-shaped bent plate is larger than the resistance arm.

[0010] Preferably, the middle part of the C-shaped movable rod is fixedly connected with an extension block, and the extension block extends out of the socket and is slidably connected with the inside of the socket.

[0011] Preferably, when the plug is completely inserted into the socket, the resistance arm of the Z-shaped bent plate is pressed by the plug.

[0012] Preferably, the PCB circuit board is provided with an indicator lamp for indicating the connection state of the plug and the socket, such as successful connection or fault.

[0013] Preferably, the top of the pushing block is provided with a groove, so as to facilitate manual operation of the user to unlock and eject the plug.

[0014] Compared with the related art, the connection assembly of the FPC circuit board has the following beneficial effects:

[0015] Stable electrical contact: the spring is fixedly arranged in each contact hole, and when the contact pin is inserted, the spring is deformed under pressure and forms a close electrical contact with the contact pin, thereby ensuring reliable transmission of signals or currents and reducing signal interruption or current fluctuation caused by poor contact;

[0016] Stable mechanical connection: the clamping grooves on the two sides of the plug are clamped with the trapezoidal plugs in the socket through the limiting spring, thereby providing strong mechanical locking force, effectively preventing the plug from loosening or falling off due to vibration or external force during use, and enhancing the stability and reliability of the connection;

[0017] Convenient unlocking and ejecting: the limiting unlocking and ejecting mechanism is designed, the user only needs to press the C-shaped movable rod, and the plug can be quickly unlocked and ejected through the principle of lever and the elastic force of the reset spring, without the need of using tools or complex operation steps, thereby greatly improving the convenience and efficiency of use. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the connection assembly of the FPC circuit board provided by the utility model;

[0019] Figure 2 for Figure 1 The structural diagram of the FPC circuit board body shown;

[0020] Figure 3 for Figure 1 The schematic structural diagram of the socket shown is a partial cross-section;

[0021] Figure 4 for Figure 3 The schematic structural diagram of the shrapnel shown;

[0022] Figure 5 for Figure 1 The structural diagram of the limit unlocking ejection mechanism is shown.

[0023] Numbers in the figure: 1. FPC circuit board body; 2. PCB circuit board; 3. plug; 4. socket; 5. contact pin; 6. contact hole; 7. spring; 8. limit unlocking and ejection mechanism; 9. extension block; 10. indicator light; 11. groove; 81. card slot; 82. C-shaped movable rod; 83. ramp; 84. reset spring; 85. Z-shaped rocker; 86. limit spring; 87. trapezoidal plug block; 88. shift block. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0026] See also Figures 1-4 , a connection component of an FPC circuit board, the connection component of the FPC circuit board includes: an FPC circuit board body 1, a contact pin 5 and a limit unlocking and ejecting mechanism 8, one end of the FPC circuit board body 1 is provided with a PCB circuit board 2, one end of the FPC circuit board body 1 is fixedly connected to a plug 3, one side of the PCB circuit board 2 is fixedly connected to a socket 4, the plug 3 is plugged into the socket 4, contact pins 5 are equidistantly installed inside the plug 3, contact holes 6 are equidistantly opened inside the socket 4, and springs 7 are symmetrically fixedly connected inside the contact holes 6. A limit unlocking and ejecting mechanism 8 is provided between the plug 3 and the socket 4, and an indicator light 10 is provided on the PCB circuit board 2 for indicating the connection status of the plug 3 and the socket 4, such as successful connection or a fault.

[0027] See alsoFigure 5 The limiting and unlocking ejection mechanism 8 comprises: a clamping groove 81, a C-shaped movable rod 82, a slope 83, a reset spring 84, a Z-shaped rocker plate 85, a limiting spring 86, a trapezoidal plug block 87 and a push block 88, the clamping groove 81 is symmetrically arranged on both sides of the plug 3, the C-shaped movable rod 82 is slidably connected in the socket 4, the slope 83 is arranged at the bottom of both ends of the C-shaped movable rod 82, the reset spring 84 is fixedly connected in the socket 4, the top end of the reset spring 84 is fixedly connected with the bottom of the C-shaped movable rod 82, the Z-shaped rocker plate 85 is rotatably connected below the C-shaped movable rod 82 in the socket 4, the limiting spring 86 is fixedly connected to the inner wall of the socket 4 near the clamping groove 81, the trapezoidal plug block 87 is slidably connected to the inner wall of the socket 4, one end of the trapezoidal plug block 87 is fixedly connected with one end of the limiting spring 86, the other end of the trapezoidal plug block 87 is clamped with the clamping groove 81, the push block 88 is fixedly connected to one side of the trapezoidal plug block 87, the push block 88 is below the C-shaped movable rod 82, the power arm of the Z-shaped rocker plate 85 is greater than the resistance arm, the extension block 9 is fixedly connected to the middle of the C-shaped movable rod 82, the extension block 9 extends out of the socket 4 and is slidably connected with the inside of the socket 4, when the plug 3 is completely inserted into the socket 4, the resistance arm of the Z-shaped rocker plate 85 is pressed by the plug 3, and a groove 11 is arranged at the top end of the push block 88, so that the user can manually operate to unlock and eject the plug 3.

[0028] The working principle of the connecting assembly of the FPC circuit board is as follows:

[0029] The plug-in process is as follows:

[0030] When the plug 3 at one end of the FPC circuit board body 1 is aligned and inserted into the socket 4 on one side of the PCB circuit board 2, the contact pins 5 in the plug 3 will enter the contact holes 6 pre-formed in the socket 4 one by one. During this process, the spring sheets 7 symmetrically fixedly installed in each contact hole 6 will play a key role.

[0031] As the contact pins 5 gradually penetrate, the spring sheets 7 are deformed under the pressure from the contact pins 5. This deformation not only ensures that the contact pins 5 can smoothly enter the contact holes 6, but also forms a close and stable electrical contact between the spring sheets 7 and the contact pins 5, thereby ensuring reliable transmission of signals or currents.

[0032] Stable connection:

[0033] During the process of continuously inserting the plug 3, the two trapezoidal plug blocks 87 in the socket 4 will be squeezed. When the two trapezoidal plug blocks 87 are squeezed, the limiting springs 86 connected thereto will be compressed and will slide along the inner wall of the socket 4 towards the plug 3.

[0034] When the plug 3 is fully inserted into the socket 4 and the slot 81 on the plug 3 is aligned with the end of the trapezoidal insert 87, the trapezoidal insert 87 quickly snaps into the slot 81 under the elastic force of the limit spring 86, thereby achieving a mechanical lock between the plug 3 and the socket 4. At this time, the end of the plug 3 also abuts against the Z-shaped rocker 85 located inside the socket 4, further enhancing the stability of the connection and preventing the plug 3 from shaking during use.

[0035] At the same time, the C-shaped movable rod 82 is maintained at its highest point under the elastic force of the two return springs 84, and the slope 83 at its lower end is kept in contact with the shift block 88 on one side of the trapezoidal insert block 87.

[0036] Unlock and eject:

[0037] When it is necessary to unlock and eject the plug 3, the user only needs to press the C-shaped movable rod 82 or the part thereof extending outside the socket 4. This action causes the C-shaped movable rod 82 to move downward and compress the two return springs 84.

[0038] As the C-shaped movable rod 82 moves downward, the slopes 83 at both ends of the rod squeeze the contacting shift block 88. Since the shift block 88 is fixedly connected to the trapezoidal insert block 87, this squeezing force drives the two trapezoidal insert blocks 87 away from each other and gradually disengages from the slot 81.

[0039] As the trapezoidal insert 87 disengages, the mechanical lock between the plug 3 and the socket 4 is released. At this point, the continued downward movement of the C-shaped movable rod 82 compresses the Z-shaped rocker 85 through its lower end. Because the power arm of the Z-shaped rocker 85 is greater than the resistance arm, this compressive force is amplified and converted into a force to eject the plug 3, thereby easily ejecting the plug 3 from the socket 4.

[0040] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A connection assembly for an FPC circuit board, characterized in that: include: An FPC circuit board body (1), one end of the FPC circuit board body (1) is provided with a PCB circuit board (2), one end of the FPC circuit board body (1) is fixedly connected to a plug (3), one side of the PCB circuit board (2) is fixedly connected to a socket (4), and the plug (3) is plugged into the socket (4); Contact pins (5), contact pins (5) are equidistantly installed inside the plug (3), contact holes (6) are equidistantly opened inside the socket (4), and springs (7) are symmetrically fixedly connected inside the contact holes (6); A position-limiting, unlocking and ejecting mechanism (8) is provided between the plug (3) and the socket (4).

2. The FPC circuit board connection assembly according to claim 1, characterized in that: The limit unlocking ejection mechanism (8) includes: a card slot (81), a C-shaped movable rod (82), a slope (83), a return spring (84), a Z-shaped rocker (85), a limit spring (86), a trapezoidal plug (87) and a dial block (88), the plug (3) is symmetrically provided with a card slot (81) on both sides, the socket (4) is internally slidably connected with a C-shaped movable rod (82), the bottom of both ends of the C-shaped movable rod (82) is provided with a slope (83), the socket (4) is internally symmetrically fixedly connected with a return spring (84), the top of the two return springs (84) and the bottom of the C-shaped movable rod (82) are connected. The inside of the socket (4) is fixedly connected, and a Z-shaped rocker (85) is rotatably connected to the inside of the socket (4) just below the C-shaped movable rod (82). A limit spring (86) is fixedly connected to the inner wall of the socket (4) near the card slot (81). A trapezoidal plug (87) is symmetrically slidably connected to the inner wall of the socket (4). One end of the two trapezoidal plugs (87) is fixedly connected to one end of the limit spring (86), and the other end of the two trapezoidal plugs (87) is clamped with the card slot (81). A shift block (88) is fixedly connected to one side of the trapezoidal plug (87), and the shift block (88) is located below the C-shaped movable rod (82).

3. The FPC circuit board connection assembly according to claim 2, characterized in that: The power arm of the Z-shaped seesaw (85) is larger than the resistance arm.

4. The FPC circuit board connection assembly according to claim 2, characterized in that: An extension block (9) is fixedly connected to the middle of the C-shaped movable rod (82), and the extension block (9) extends out of the socket (4) and is slidably connected to the inside thereof.

5. The FPC circuit board connection assembly according to claim 2, characterized in that: When the plug (3) and the socket (4) are fully plugged in, the resistance arm of the Z-shaped rocker (85) is squeezed by the plug (3).

6. The FPC circuit board connection assembly according to claim 1, characterized in that: An indicator light (10) is provided on the PCB circuit board (2) for indicating the connection status between the plug (3) and the socket (4).

7. The FPC circuit board connection assembly according to claim 2, characterized in that: A groove (11) is formed on the top of the shifting block (88).

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