A flat cable contact anti-disengagement type FPC connector

Abstract

The application discloses a flat cable contact anti-dropping type FPC connector and relates to the technical field of FPC connectors. The connector shell is provided with a terminal body in a nested and butt joint manner at the rear side of the connector shell, the upper side of the connector shell is provided with a cover plate, the cover plate is rotationally connected with the connector shell through the hinge shaft arranged on the side of the cover plate, the inside of the connector shell is further provided with a flat cable body in a butt joint manner, and the front side of the connector shell is provided with a fixing sheet. The flat cable contact anti-dropping type FPC connector is characterized in that when the fixing sheet is inserted into the connector shell, the upper surface of the fixing sheet is in contact with a friction block to generate a dynamic friction force, the limiting plate is vertically slid along the movable groove, the rotating rod is rotated around the hinge point through the pull plate pulling the rotating rod, the linkage plate is rotated around the fixed shaft, the anti-dropping plate is extended to above the hinge shaft along the lateral sliding rail through the symmetrical rotating rod driving the anti-dropping plate, mechanical shielding is formed, the axial displacement of the hinge is limited while the normal rotation of the hinge is ensured, and the cover plate is prevented from being loosened.

Description

Technical Field

[0001] This invention relates to the field of FPC connector technology, specifically to a ribbon cable contact anti-dislodgement FPC connector. Background Technology

[0002] FPC connectors are high-precision components used to connect flexible circuit boards to electronic devices. They are widely used in consumer electronics, automotive electronics, medical devices and other fields. FPC connectors are the core interface of flexible circuits, and their performance directly affects the stability and reliability of the equipment.

[0003] Existing technology 1 (Chinese patent CN210517062U, published on 2020-05-12) is an FPC ribbon cable anti-detachment connector, including a connector base. One end of the connector base is provided with a ribbon cable slot, a terminal slot, and an anti-detachment slot. The terminal slot and the anti-detachment slot are both connected to the ribbon cable slot. The anti-detachment slot is located on both sides of the ribbon cable slot. The other end is provided with a circuit board slot. The circuit board slot and the ribbon cable slot are staggered vertically, and the circuit board slot is connected to the terminal slot. Multiple contact terminals are fixed in the terminal slot. The contact terminals are provided with an inner clamping part and an outer clamping part. The inner clamping part is located in the ribbon cable slot, and the outer clamping part is located in the circuit board slot. The anti-detachment terminal is fixed in the anti-detachment slot. One end of the anti-detachment terminal is provided with an anti-detachment hook, which matches the limiting groove on the FPC ribbon cable. The other end is provided with an elastic plate, and the elastic plate is provided with an anti-detachment spring, which matches the locking hooks on both sides of the circuit board. The connector is easy to insert and remove and does not occupy the circuit board. The space is sufficient, and the connection is reliable and not easy to fall off. There is also existing technology two (Chinese patent with announcement number CN212162121U, announcement date 2020-12-15) for a force-applying ribbon cable positioning connector, including a connector base. The connector base has a mounting groove for placing the FPC ribbon cable. The rear side wall of the mounting groove on the connector base has equally spaced hardware parts. It also includes a cover plate hinged relative to the connector base, which can be fastened to the mounting groove to press the hardware parts onto the gold fingers of the FPC ribbon cable. The left and right side walls of the mounting groove have engagement grooves, and positioning terminals are inserted into the engagement grooves. The positioning terminals have welding feet located on the bottom surface of the connector base. The cover plate has a cover plate opening strip extending towards the rear side wall of the mounting groove after the cover plate is fastened to the mounting groove. The extended end of the cover plate opening strip has a magnetic pressure piece, which has the advantages of facilitating cover plate opening and simultaneously applying pressure to fix the FPC ribbon cable after the cover plate is fastened.

[0004] While existing technology can apply pressure to fix the FPC cable after the cover is closed, ensuring a reliable connection and preventing it from falling off, it cannot limit the cable's movement when the cover is open. The cable's movement is limited, and the cover itself cannot be limited, so there is a risk of it coming loose after repeated opening and closing.

[0005] Therefore, we propose a ribbon cable contact anti-dislodgement FPC connector to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a ribbon cable contact anti-detachment FPC connector to solve the problems mentioned in the background art, where the current market cannot limit the ribbon cable when the cover is open, the limiting of the ribbon cable has certain limitations, and it cannot limit the cover, so the cover may loosen after repeated opening and closing.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a ribbon cable contact anti-disengagement FPC connector, comprising a connector housing, a terminal body nested and mated on the rear side of the connector housing, and a cover plate provided on the upper side of the connector housing, the cover plate being rotatably connected to the connector housing via a flip-top pivot provided on its side, a ribbon cable body also mated inside the connector housing, a fixing plate provided on the front side of the connector housing, and an anti-disengagement mechanism provided on the fixing plate, the anti-disengagement mechanism limiting the ribbon cable body through the abutment action of the included pressing plate, a limiting mechanism provided inside the connector housing near the flip-top pivot, the limiting mechanism limiting the flip-top pivot through the movement of the included anti-disengagement plate.

[0008] Preferably, the lower solder feet of the terminal body and the fixing piece are both higher than the lower plastic surface of the connector housing, so that the extension of the terminal body and the fixing piece can compensate for the shrinkage caused by the deformation of the connector housing plastic.

[0009] Preferably, the fixing plate is provided with a stop post, and the stop post is located on the outside of the flip cover pivot. The stop post and the connector housing cooperate with each other to initially block the front and rear sides of the flip cover pivot. The fixing plate is symmetrically arranged in two sets about the center point of the connector housing.

[0010] Preferably, the outer end of the fixing piece is provided with a bent portion to increase the contact area with the side ear of the ribbon cable body, and the bent portion is provided with a 180° downward bent structure. The lower surface of the cover plate has an inwardly recessed relief groove, and the relief groove corresponds one-to-one with the position of the bent portion.

[0011] Preferably, the limiting mechanism includes a movable groove, which is opened inside the connector housing. A friction block is slidably connected inside the movable groove, and the lower part of the friction block contacts the upper surface of the fixed plate after docking. At the same time, an arc-shaped protrusion is provided below the friction block to increase the friction with the fixed plate. The friction block forms a sliding structure with the fixed plate and the movable groove.

[0012] Preferably, a fixed shaft is fixedly connected inside the movable groove, and a linkage plate is rotatably connected to the outside of the fixed shaft. Both sides of the linkage plate are hinged with rotating rods, and the other end of the rotating rods is hinged with a pull plate.

[0013] Preferably, the anti-detachment plate is slidably disposed on the connector housing, and the inner end of the anti-detachment plate is disposed inside the movable groove. The inner end of the anti-detachment plate is fixedly connected to the upper end of one side pull plate, and the friction block is fixedly connected to the lower end of the other side pull plate. When the fixing piece is mated inside the connector housing, the outer end of the anti-detachment plate is located on the upper surface of the flip cover pivot.

[0014] Preferably, the anti-detachment mechanism includes a sliding plate, which is slidably disposed on the bending portion. An adjustment groove is provided inside the bending portion, and a pressure plate body is slidably connected inside the adjustment groove. The pressure plate body is fixedly connected to the end side of the sliding plate.

[0015] Preferably, the outer end of the slide plate is fixedly connected to a pressing plate for limiting the ear buckle provided on the side end of the cable body, and a reset folding piece is provided between the inner side of the pressing plate body and the inside of the adjustment groove for applying an outward moving force to the pressing plate body.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: by raising the solder feet above the plastic surface of the connector housing, the deformation caused by the cooling and shrinkage of the plastic injection molding is compensated; the front stop post of the fixing plate cooperates with the connector housing to form an axial constraint on the flip cover shaft, preventing the cover from falling off after assembly; when the fixing plate is inserted, the drive anti-detachment plate extends along the lateral slide rail to above the flip cover shaft, forming a movable mechanical shield; during cable docking, the ear clip squeezes the compression plate, driving the pressure plate body to compress and reset the folding piece to store energy; after docking, the folding piece elastically releases and pushes the pressure plate body to press the ear clip in the opposite direction to ensure the stability of the cable docking.

[0017] The solder joints of the terminal body and the fixing plate are raised to be higher than the plastic surface of the connector housing, thereby compensating for the impact of plastic deformation and avoiding shrinkage deformation at the thin frame opening of the product.

[0018] Equipped with a fixing plate, after the cover plate is assembled, the fixing plate cooperates with the connector housing through the stop post on its front side to limit the hinge of the flip cover, thereby preventing the cover plate from falling off after assembly and ensuring the stability of the cover plate after assembly.

[0019] The outer side of the fixing plate is provided with a bending part. The ear loop position of the ribbon cable body is located between the bending part and the stop post. The bending part and the stop post cooperate with each other to restrict the ear loop. At the same time, the bending part is set in a 180° bend shape, which further increases the contact area between it and the ear loop, increases its holding force, and thus ensures a stable contact.

[0020] When the fixing plate is inserted into the connector housing, its upper surface contacts the friction block to generate dynamic friction, which drives the limiting plate to slide vertically along the movable groove. The pulling plate pulls the rotating rod to rotate around the hinge point, which drives the linkage plate to rotate around the fixed axis. The linkage plate drives the anti-detachment plate to extend along the lateral slide rail to the top of the flip cover's rotating axis through the symmetrical rotating rod, forming a mechanical shield. While ensuring the normal rotation of the flip cover, it restricts its axial displacement and prevents the cover from loosening.

[0021] When the ribbon cable body is docked, its side ear buckle squeezes the squeezing plate, and the sliding plate drives the pressure plate body to slide inward along the adjustment groove, simultaneously compressing the reset folding piece. After docking is completed, the reset folding piece elastically resets and pushes the pressure plate body in the opposite direction to make the squeezing plate press tightly against the ear buckle, thus realizing the mechanical limit of the ribbon cable body. This structure can stably fix the ribbon cable body without closing the cover plate and supports continuous docking operation with the cover plate open. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a three-dimensional structural diagram of the cover plate of the present invention when closed;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the clearance groove of the present invention;

[0025] Figure 4 This is a three-dimensional structural diagram of the flip cover hinge of the present invention;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the fixing piece of the present invention;

[0027] Figure 6 This is a three-dimensional cross-sectional view of the movable groove structure of the present invention;

[0028] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle;

[0029] Figure 8 This is a schematic diagram of the three-dimensional structure of the linkage plate of the present invention;

[0030] Figure 9 This is a three-dimensional structural diagram of the cable loop fastener of the present invention;

[0031] Figure 10 This is a three-dimensional cross-sectional view of the fixing plate of the present invention;

[0032] Figure 11 This is a schematic diagram of the three-dimensional structure of the resetting folded piece of the present invention.

[0033] In the diagram: 1. Connector housing; 2. Cover plate; 3. Flip cover pivot; 4. Terminal body; 5. Fixing plate; 501. Stop post; 502. Bending part; 8. Cable body; 9. Clearance groove; 10. Anti-detachment plate; 11. Movable groove; 12. Fixed shaft; 13. Rotating rod; 14. Pull plate; 15. Friction block; 16. Limiting plate; 17. Squeezing plate; 18. Reset folding piece; 19. Slide plate; 20. Linkage plate; 21. Pressure plate body; 22. Adjustment groove. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1: To improve the stability of the connection between the cover plate 2 and the ribbon cable body 8, and to prevent the cover plate 2 from loosening during connection, a fixing piece 5 is provided. The fixing piece 5 further limits the position of the cover plate 2 and the ribbon cable body 8. Figure 1 - Figure 5 The present invention provides the following technical solution: a ribbon cable contact anti-disconnection FPC connector, wherein: a terminal body 4 is nested and mated on the rear side of the connector housing 1, and a cover plate 2 is provided on the upper side of the connector housing 1. The cover plate 2 is rotatably connected to the connector housing 1 through a flip-top pivot 3 provided on its side. At the same time, a ribbon cable body 8 is also mated inside the connector housing 1. The lower solder feet of the terminal body 4 and the fixing piece 5 are both higher than the lower plastic surface of the connector housing 1. The extension of the terminal body 4 and the fixing piece 5 compensates for the shrinkage caused by the deformation of the plastic of the connector housing 1. Due to the influence of the fixed plate 5, a stop post 501 is provided on the fixed plate 5, and the stop post 501 is located on the outside of the flip cover pivot 3. The stop post 501 and the connector housing 1 cooperate with each other to initially block the front and rear sides of the flip cover pivot 3. The fixed plate 5 is symmetrically arranged with two sets about the center point of the connector housing 1. The outer end of the fixed plate 5 is provided with a bent part 502 for increasing the contact area with the side ear buckle of the ribbon cable body 8. The bent part 502 is arranged with a 180° downward bent structure. The lower surface of the cover plate 2 has an inwardly recessed relief groove 9, and the relief groove 9 corresponds one-to-one with the position of the bent part 502.

[0036] The solder joints of the terminal body 4 and the fixing piece 5 are raised to be higher than the plastic surface of the connector housing 1, thereby compensating for the impact of plastic deformation and avoiding shrinkage deformation at the thin frame opening. The fixing piece 5 is provided so that after the cover plate 2 is assembled, the fixing piece 5 cooperates with the connector housing 1 through the stop post 501 on its front side to limit the flip cover pivot 3, thereby preventing the cover plate 2 from falling off after assembly and ensuring the stability of the cover plate 2 after assembly. A bending part 502 is provided on the outer side of the fixing piece 5. The ear position of the ribbon cable body 8 is located between the bending part 502 and the stop post 501. The bending part 502 and the stop post 501 cooperate to restrict the ear. At the same time, the bending part 502 is bent at 180°, which further increases the contact area with the ear and increases its holding force, thereby ensuring a stable contact.

[0037] Example 2: To further ensure the stability of the cable body 8 connection, and to ensure stable connection of the cable body 8 regardless of the state of the cover plate 2, an anti-detachment mechanism is provided, such as... Figure 5 - Figure 8 The present invention provides the following technical solution: a ribbon cable contact anti-detachment FPC connector, which discloses that: a fixing plate 5 is provided on the front side of the connector housing 1, and an anti-detachment mechanism is provided on the fixing plate 5. The anti-detachment mechanism limits the ribbon cable body 8 by the abutment action of the pressing plate 17 included therein. The anti-detachment mechanism further limits the flip cover pivot 3 by the movement of the anti-detachment plate 10 included therein. The anti-detachment mechanism includes a sliding plate 19, which is slidably disposed on the bending portion 502. An adjustment groove 22 is provided inside the bending portion 502, and a pressure plate body 21 is slidably connected inside the adjustment groove 22. The pressure plate body 21 is fixedly connected to the end side of the sliding plate 19. A pressing plate 17 for limiting the ear buckle provided on the side end of the ribbon cable body 8 is fixedly connected to the outer end of the sliding plate 19. A reset folding piece 18 for applying an outward moving force to the pressure plate body 21 is provided between the inner side of the pressure plate body 21 and the inside of the adjustment groove 22.

[0038] When the ribbon cable body 8 is inserted along the docking direction, the ear buckles symmetrically arranged on both sides first contact the guide slope of the extrusion plate 17. The vertical insertion force is converted into a horizontal thrust through the component force of the slope, driving the extrusion plate 17 to move inward. The extrusion plate 17 is rigidly connected to the pressure plate body 21 through the bottom slide plate 19, causing the pressure plate body 21 to slide linearly along the guide track of the adjustment groove 22. During the sliding process of the pressure plate body 21, it can contact the wave-shaped elastic arm of the reset folding piece 18. Through gradual extrusion, the reset folding piece 18 generates elastic deformation and stores energy. When the ribbon cable body 8 is fully docked, the elastic potential energy of the reset folding piece 18 is released, applying a reverse thrust to the pressure plate body 21, pushing the extrusion plate 17 to press the ear buckles tightly. This breaks through the limitation of the traditional requirement to close the cover plate 2 to limit the position. Even when the cover plate 2 is open, the mechanical structure itself can still maintain the stable docking of the ribbon cable body 8.

[0039] Example 3: To further ensure the stability of the cover plate 2 installation and prevent the cover plate 2 from becoming loose, a limit mechanism is provided, such as... Figure 9 - Figure 11 The present invention provides the following technical solution: a ribbon cable contact anti-disconnection FPC connector, which discloses that: a limiting mechanism is provided inside the connector housing 1 near the flip cover pivot 3. The limiting mechanism includes a movable groove 11, which is opened inside the connector housing 1. A friction block 15 is slidably connected inside the movable groove 11, and the lower part of the friction block 15 contacts the upper surface of the mating fixing plate 5. At the same time, an arc-shaped protrusion is provided below the friction block 15 to increase the friction with the fixing plate 5. The friction block 15 forms a sliding structure with the movable groove 11 through the fixing plate 5. A fixed shaft 12 is fixedly connected inside the groove 11, and a linkage plate 20 is rotatably connected to the outside of the fixed shaft 12. A rotating rod 13 is hinged on both sides of the linkage plate 20, and a pull plate 14 is hinged on the other end of the rotating rod 13. An anti-detachment plate 10 is slidably mounted on the connector housing 1, and the inner end of the anti-detachment plate 10 is located inside the movable groove 11. The inner end of the anti-detachment plate 10 is fixedly connected to the upper end of one side pull plate 14. The friction block 15 is fixedly connected to the lower end of the other side pull plate 14. When the fixing piece 5 is mated inside the connector housing 1, the outer end of the anti-detachment plate 10 is located on the upper surface of the flip cover rotating shaft 3.

[0040] When the fixing plate 5 is inserted into the connector housing 1 along the mating direction, its upper surface makes initial contact with the lower surface of the friction block 15. As the insertion depth increases, dynamic friction is generated between the two. This friction drives the limiting plate 16 to slide linearly along the guide direction of the movable groove 11. Its sliding direction is perpendicular to the insertion direction of the fixing plate 5. The sliding of the limiting plate 16 is transmitted to the rotating rod 13 through the pull plate 14 rigidly connected to its upper surface. After the rotating rod 13 is pulled, it drives the linkage plate 20 hinged at the other end to rotate around the fixed axis 12 with its hinge point as the rotation center. The rotation of the linkage plate 20 is synchronously transmitted to the anti-detachment plate 10 through another set of rotating rods 13 arranged symmetrically. This causes the anti-detachment plate 10 to extend outward along the lateral slide rail of the connector housing 1 and finally position itself directly above the flip cover rotating shaft 3, forming a mechanical shield. The anti-detachment plate 10 ensures the normal rotation of the flip cover 2 and restricts its axial displacement, thereby eliminating the risk of the cover loosening.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A ribbon cable contact anti-dislodgement FPC connector, comprising a connector housing (1), wherein a terminal body (4) is nested and mated on the rear side of the connector housing (1), and a cover plate (2) is provided on the upper side of the connector housing (1), and the cover plate (2) is rotatably connected to the connector housing (1) through a flip-top pivot (3) provided on its side, and a ribbon cable body (8) is also mated inside the connector housing (1), characterized in that, A fixing plate (5) is provided on the front side of the connector housing (1), and an anti-detachment mechanism is provided on the fixing plate (5). The anti-detachment mechanism limits the ribbon cable body (8) by the abutment action of the extrusion plate (17) it contains. A limiting mechanism is provided inside the connector housing (1) near the flip cover pivot (3). The limiting mechanism limits the flip cover pivot (3) by the movement of the anti-detachment plate (10) it contains. A stop post (501) is provided on the fixing plate (5). The stop post (501) is located on the outside of the flip cover pivot (3). The stop post (501) and the connector housing (1) cooperate with each other to initially block the front and rear sides of the flip cover pivot (3). The fixing piece (5) is symmetrically arranged in two sets about the center point of the connector housing (1). The outer end of the fixing piece (5) is provided with a bent part (502) to increase the contact area with the side ear of the ribbon cable body (8). The bent part (502) is arranged in a 180° downward bending structure. The lower surface of the cover plate (2) has an inwardly recessed clearance groove (9) on its side, and the clearance groove (9) corresponds one-to-one with the position of the bent part (502). The limiting mechanism includes a movable groove (11), which is opened inside the connector housing (1). A friction block (15) is slidably connected inside the movable groove (11), and the lower part of the friction block (15) contacts the upper surface of the fixed piece (5) after docking. At the same time, a tool for increasing the position of the friction block (15) is provided below the friction block (15). The friction block (15) is formed by the friction of the fixed plate (5) and the movable groove (11) through the fixed plate (5) to form a sliding structure. The anti-detachment mechanism includes a sliding plate (19). The sliding plate (19) is slidably disposed on the bending part (502). An adjustment groove (22) is provided inside the bending part (502). The pressure plate body (21) is slidably connected inside the adjustment groove (22). The pressure plate body (21) is fixedly connected to the end side of the sliding plate (19).

2. The ribbon cable contact anti-dislodgement FPC connector according to claim 1, characterized in that: The lower solder feet of the terminal body (4) and the fixing piece (5) are higher than the lower plastic surface of the connector housing (1). The extension of the terminal body (4) and the fixing piece (5) compensates for the shrinkage of the plastic deformation of the connector housing (1).

3. The ribbon cable contact anti-dislodgement FPC connector according to claim 2, characterized in that: The movable groove (11) is fixedly connected to a fixed shaft (12), and a linkage plate (20) is rotatably connected to the outside of the fixed shaft (12). Both sides of the linkage plate (20) are hinged with rotating rods (13), and the other end of the rotating rods (13) is hinged with a pull plate (14).

4. The ribbon cable contact anti-dislodgement FPC connector according to claim 3, characterized in that: The anti-detachment plate (10) is slidably disposed on the connector housing (1), and the inner end of the anti-detachment plate (10) is disposed inside the movable groove (11). The inner end of the anti-detachment plate (10) is fixedly connected to the upper end of one side pull plate (14). The friction block (15) is fixedly connected to the lower end of the other side pull plate (14). When the fixing piece (5) is mated inside the connector housing (1), the outer end of the anti-detachment plate (10) is located on the upper surface of the flip cover pivot (3).

5. A ribbon cable contact anti-dislodgement FPC connector according to claim 4, characterized in that: The outer end of the slide plate (19) is fixedly connected to a pressing plate (17) for limiting the ear buckle set on the side end of the cable body (8). A reset folding piece (18) for applying outward moving force to the pressing plate body (21) is provided between the inner side of the pressing plate body (21) and the inside of the adjustment groove (22).

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