Self-locking FPC connector capable of preventing cover from falling off

Abstract

The invention discloses a self-locking anti-disengagement FPC connector, and belongs to the technical field of FPC connectors, the self-locking anti-disengagement FPC connector comprises a support base and a connecting terminal inserted on the support base, the support base is provided with a protective cover plate, and an adjusting rotating shaft fixed on the protective cover plate is inserted into the connecting terminal. Inserting guide columns are fixed to the left side and the right side of the supporting base, a first magnetic block is connected to the end, facing the center of the supporting base, of each inserting guide column, a limiting lantern ring is arranged on the side edge of the protective cover plate, a second magnetic block is installed in the limiting lantern ring, and the protective cover plate is connected with the protective cover plate through a first metal elastic piece. According to the FPC connector with the self-locking anti-falling cover, through the arrangement of the insertion guide columns, after the protective cover plate is rotated and closed, the limiting lantern rings are inserted into the insertion guide columns under the action of magnetic force, automatic locking of the protective cover plate is achieved, and the situation that the protective cover plate automatically rebounds due to the fact that the flexible flat cable is pulled and stressed subsequently is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of FPC connectors, and particularly to an FPC connector with self-locking and anti-detaching cover. Background Art

[0002] An FPC connector is an electronic connector made of flexible materials. It can connect various types of electronic components together to achieve various control and automation applications. The FPC connector has a compact design and a light weight, and is very suitable for electronic products with high requirements for miniaturization and light weight.

[0003] For example, a Chinese patent with the publication number: CN209045827U, the patent name: Flip-type FPC connector with firm clamping, and the publication date: June 28, 2019, includes an insulating base, conductive terminals installed in the insulating base, and a cover plate pivotally connected to the insulating base; the conductive terminals include a substrate, and a first abutting foot and a second abutting foot connected to one side of the substrate; a first ratchet is connected to the end of the second abutting foot away from the substrate; the cover plate includes a main board body, and a rotating part connected to the side of the main board body facing the insulating base; a plurality of receiving holes are spaced apart on the side of the rotating part away from the insulating base, and the receiving holes correspond to the first ratchet.

[0004] For example, a Chinese patent with the publication number: CN220209500U, the patent name: An FPC connector, and the publication date: December 19, 2023, includes: an FPC connector body provided with connection terminals, and a flip cover is provided at the position of the FPC connector body corresponding to the connection terminals; a first insertion block is elastically arranged on the side wall of the flip cover, and a first fixing groove is provided at the position of the FPC connector body corresponding to the first insertion block; a second insertion block is elastically inserted into the flip cover, and the other end of the second insertion block is rotatably inserted into the inside of the FPC connector body. The following technical problems exist in the above prior art: When the existing connector is in use, in order to improve the fixing effect on the flexible cable, a plurality of receiving holes are provided on the flip cover, so that the wiring terminal jacks up the flexible cable and enters the inside of the receiving hole. Although the overall positioning strength of the flexible cable can be improved, after the flexible cable is stressed, the flip cover is prone to looseness and rebound due to the pulling effect. When the flip cover becomes loose, the flexible cable cannot be stably limited.

[0005] Therefore, we propose an FPC connector with self-locking and anti-detaching cover to solve the problems raised above. Summary of the Invention

[0006] The object of the present invention is to provide an FPC connector with self-locking and anti-detaching cover, so as to solve the problem that in order to improve the fixing effect on the flexible cable in the existing connectors on the current market, multiple accommodation holes are provided on the flip cover, and then the wiring terminals are used to lift the flexible cable and enter the inside of the accommodation holes. Although the overall positioning strength of the flexible cable can be improved, after the flexible cable is stressed, the flip cover is prone to loosen and rebound due to the pulling effect. When the flip cover becomes loose, the flexible cable cannot be stably limited.

[0007] To achieve the above object, the present invention provides the following technical solution: an FPC connector with self-locking and anti-detaching cover, including a support base and connection terminals inserted on the support base. A protective cover plate is provided on the support base, and the adjusting rotating shaft fixed on the protective cover plate is inserted into the connection terminals. Plugging guide posts are fixed on both left and right sides of the support base, and a first magnetic block is connected to one end of the plugging guide post facing the center of the support base. A limiting collar is provided on the side of the protective cover plate, and a second magnetic block is installed inside the limiting collar. The protective cover plate is connected to each other through a first metal elastic sheet, and the inner surface of the protective cover plate is a smooth plane. A boosting pressure-applying component for positioning the FPC is installed on the limiting collar. The first magnetic block at the end of the plugging guide post is used to generate magnetic attraction on the second magnetic block inside the limiting collar on the side of the protective cover plate after rotation and closing.

[0008] Preferably, one end of the connection terminal close to the adjusting rotating shaft extends outward to form a bent portion, and the adjusting rotating shaft is located inside the bent portion. The area where the lower end of the connection terminal supports the FPC bulges outward to form an abutting portion.

[0009] By adopting the above technical solution, the bent portion can provide a rotating space for the adjusting rotating shaft on the protective cover plate.

[0010] Preferably, the magnetism of the first magnetic block at the end of the plugging guide post is opposite to that of the second magnetic block inside the limiting collar, and the side of the limiting collar facing the plugging guide post is provided with an opening structure.

[0011] By adopting the above technical solution, the first magnetic block at the end of the plugging guide post can generate magnetic attraction on the second magnetic block fixed inside the limiting collar, so that the second magnetic block drives the limiting collar to move synchronously.

[0012] Preferably, the port of the limiting collar is flush with the side of the protective cover plate in the initial state, and the inner wall of the limiting collar fits with the outer wall of the plugging guide post.

[0013] By adopting the above technical solution, when the limiting collar moves under the action of magnetic force, the limiting collar can be inserted onto the plugging guide post to further limit the protective cover plate.

[0014] Preferably, the assisting pressure - applying component includes a moving column fixed on the limiting collar, and a clamping column is arranged inside the moving column. The middle part of the clamping column is fixed on the protective cover plate, and a pressure - applying cross - bar is arranged on the side of the clamping column. The pressure - applying cross - bar passes through a power slot opened on the moving column, and one end of the pressure - applying cross - bar extending into the inside of the clamping column is connected to the clamping column through a second metal elastic sheet.

[0015] By adopting the above - mentioned technical solution, since the moving column is fixed on the limiting collar, when the limiting collar is affected by the magnetic force, the moving column on the side can be driven to move synchronously.

[0016] Preferably, the moving column and the protective cover plate are in sliding connection, the inside of the moving column is of a hollow structure, and the power slots on the moving column correspond to the pressure - applying cross - bars one by one.

[0017] By adopting the above - mentioned technical solution, due to the hollow structure inside the moving column, it is convenient for the moving column to move outside the clamping column.

[0018] Preferably, a plurality of pressure - applying cross - bars are evenly distributed on the clamping column, and each pressure - applying cross - bar is located between adjacent connection terminals.

[0019] By adopting the above - mentioned technical solution, after the protective cover plate rotates and closes, the movement of the pressure - applying cross - bars can press the flexible cable, making the flexible cable in the area between adjacent connection terminals sink downward, improving the stability of the positioning of the flexible cable.

[0020] Preferably, one end of the pressure - applying cross - bar in contact with the flexible cable is set as a flexible end, the pressure - applying cross - bar and the clamping column are in sliding connection, and each pressure - applying cross - bar is connected to the clamping column through a second metal elastic sheet.

[0021] By adopting the above - mentioned technical solution, when pressing the flexible cable through the flexible end of the pressure - applying cross - bar, it plays an elastic buffering role, avoiding damage to the flexible cable caused by excessive pressure. At the same time, the setting of the second metal elastic sheet enables the pressure - applying cross - bar to reset and rebound after moving on the clamping column.

[0022] Preferably, the middle part of the pressure - applying cross - bar is spherical, and two - thirds of the spherical section in the middle of the pressure - applying cross - bar is located in the power slot opened on the side of the moving column.

[0023] By adopting the above - mentioned technical solution, when the moving column moves, the edge of the power slot can squeeze the arc surface of the spherical section in the middle of the pressure - applying cross - bar, making the pressure - applying cross - bar move towards the direction of the flexible cable.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: for the FPC connector with a self-locking anti-disengagement cover, through the arrangement of the insertion guide posts, after the protective cover plate rotates and closes, the magnetic force is used to make its limiting collar insert onto the insertion guide posts, realizing the automatic locking of the protective cover plate, and preventing the subsequent pulling force on the flexible cable from causing the protective cover plate to automatically rebound; 1. A bending portion is provided. By arranging the bending portion on the connection terminal, the rotation space of the adjustment rotating shaft on the protective cover plate can be provided, preventing the adjustment rotating shaft from rotating out of position. At the same time, the flexible cable can be resisted by the abutting portion on the connection terminal, so that the flexible cable is stably limited between the protective cover plate and the connection terminal; 2. Insertion guide posts are provided. When the protective cover plate rotates and closes, the limiting collar on the side of the protective cover plate is aligned with the insertion guide posts. Through the magnetic attraction between the first magnet and the second magnet, the limiting collar can move towards the direction of the insertion guide posts and be inserted with the insertion guide posts. Through the mutual insertion of the limiting collar and the insertion guide posts, the automatic locking after the protective cover plate is closed is realized, avoiding the phenomenon that the protective cover plate rebounds after the flexible cable is pulled; 3. A pressing cross bar is provided. After the limiting collar moves, the moving column can move synchronously. Through the movement of the moving column, the edge of the power card slot can be used to squeeze the spherical arc surface in the middle of the pressing cross bar, so that the pressing cross bar moves towards the direction of the flexible cable. Through the movement of the pressing cross bar, the flexible cable can be further pressed. Using the flexible end at the end of the pressing cross bar, a pressing buffer effect can be achieved on the flexible cable, avoiding damage to the flexible cable caused by excessive downward pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a front three-dimensional structural schematic diagram of the present invention; Figure 2 is a structural schematic diagram after the protective cover plate of the present invention is opened; Figure 3 is of the present invention Figure 2 is an enlarged structural schematic diagram at A in Figure 4 is a structural schematic diagram of the connection terminal and the bending portion of the present invention; Figure 5 is a structural schematic diagram of the protective cover plate and the adjustment rotating shaft of the present invention; Figure 6 is a structural schematic diagram of the protective cover plate and the limiting collar of the present invention; Figure 7 is of the present invention Figure 6 is an enlarged structural schematic diagram at B in Figure 8 is a structural schematic diagram of the pressing cross bar and the power card slot of the present invention; Figure 9Schematic diagram of the pressure-applying crossbar and the second metal elastic sheet of the present invention.

[0026] In the figure: 1, support base; 2, connection terminal; 3, protective cover plate; 4, adjustment rotating shaft; 5, bending part; 6, abutting part; 7, insertion guide post; 8, first magnet; 9, limiting collar; 10, second magnet; 11, first metal elastic sheet; 12, boosting pressure-applying component; 121, moving column; 122, clamping column; 123, pressure-applying crossbar; 124, power card slot; 125, second metal elastic sheet. Specific implementation manner

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment 1: Please refer to Figures 1-9, in order to improve the fixing effect on the flexible cable when the existing connector is in use, multiple receiving holes are provided on the flip cover, so that the wiring terminal jacks up the flexible cable and enters the inside of the receiving hole. Although the overall positioning strength of the flexible cable can be improved, after the flexible cable is stressed, the flip cover is prone to looseness and rebound due to the pulling effect. When the flip cover becomes loose, the flexible cable cannot be stably limited. To solve this technical problem, the following technical content is disclosed in this embodiment. An FPC connector with a self-locking anti-detachment cover includes a support base 1 and a connection terminal 2 inserted on the support base 1. A protective cover plate 3 is provided on the support base 1, and an adjustment rotating shaft 4 fixed on the protective cover plate 3 is inserted into the connection terminal 2. Plugging guide posts 7 are fixed on both the left and right sides of the support base 1, and a first magnetic block 8 is connected to the end of the plugging guide post 7 facing the center of the support base 1. A limit collar 9 is provided on the side of the protective cover plate 3, and a second magnetic block 10 is installed inside the limit collar 9. The protective cover plate 3 is connected to each other through a first metal elastic sheet 11, and the inner surface of the protective cover plate 3 is a smooth plane. A boosting pressure-applying component 12 for positioning the FPC is installed on the limit collar 9. The first magnetic block 8 at the end of the plugging guide post 7 generates a magnetic attraction force on the second magnetic block 10 inside the limit collar 9 on the side of the protective cover plate 3 after rotation and closure. One end of the connection terminal 2 close to the adjustment rotating shaft 4 extends outward to form a bent portion 5, and the adjustment rotating shaft 4 is located inside the bent portion 5. The area where the lower end of the connection terminal 2 supports the FPC bulges outward to form an abutting portion 6. The magnetism of the first magnetic block 8 at the end of the plugging guide post 7 is opposite to the magnetism of the second magnetic block 10 inside the limit collar 9, and the side of the limit collar 9 facing the plugging guide post 7 is provided with an open structure. The port of the limit collar 9 is flush with the side of the protective cover plate 3 in the initial state, and the inner wall of the limit collar 9 is in contact with the outer wall of the plugging guide post 7.

[0029] When the FPC connector needs to be used, insert the flexible cable between the support base 1 and the protective cover plate 3. The bottom of the flexible cable overlaps on the connection terminal 2. Then rotate and close the protective cover plate 3. After the protective cover plate 3 rotates, its adjusting rotating shaft 4 rotates in the bending part 5 on the connection terminal 2. The bending part 5 provides a rotating space for the adjusting rotating shaft 4 to prevent the adjusting rotating shaft 4 from being displaced. After the protective cover plate 3 is closed, it can press the flexible cable. After the protective cover plate 3 rotates and closes, the limiting collar 9 on its side and the insertion guide post 7 on the support base 1 are aligned with each other. At this time, the first magnetic block 8 on the insertion guide post 7 generates a magnetic attraction force on the second magnetic block 10 on the limiting collar 9. At this time, the limiting collar 9 moves towards the direction of the insertion guide post 7, so that the limiting collar 9 and the insertion guide post 7 are inserted into each other. Through the insertion of the limiting collar 9 and the insertion guide post 7, the automatically locking of the rotated protective cover plate 3 is realized, preventing the protective cover plate 3 from loosening after the subsequent flexible printed circuit board is pulled and stressed. After the limiting collar 9 moves, it can cause the first metal elastic sheet 11 to deform. When the protective cover plate 3 is opened subsequently, push the limiting collar 9 towards the direction close to the protective cover plate 3 by hand, so that the limiting collar 9 is separated from the insertion guide post 7. At this time, the limiting collar 9 is reset under the action of the first metal elastic sheet 11, so that it is convenient to open the protective cover plate 3 subsequently.

[0030] Embodiment 2: The technical content disclosed in this embodiment is a further improvement based on the above Embodiment 1. The following technical content is disclosed in this embodiment. The assisting pressure-applying component 12 includes a moving column 121 fixed on the limiting collar 9. A clamping column 122 is arranged inside the moving column 121. The middle part of the clamping column 122 is fixed on the protective cover plate 3. A pressure-applying cross bar 123 is arranged on the side of the clamping column 122. The pressure-applying cross bar 123 passes through a power card slot 124 opened on the moving column 121. One end of the pressure-applying cross bar 123 extending into the inside of the clamping column 122 is connected to the clamping column 122 through a second metal elastic sheet 125. The moving column 121 and the protective cover plate 3 are in sliding connection. The inside of the moving column 121 is of a hollow structure. The power card slots 124 on the moving column 121 and the pressure-applying cross bars 123 correspond one by one. A plurality of pressure-applying cross bars 123 are evenly distributed on the clamping column 122. Each pressure-applying cross bar 123 is located between adjacent connection terminals 2. One end of the pressure-applying cross bar 123 in contact with the flexible cable is set as a flexible end. The pressure-applying cross bar 123 and the clamping column 122 are in sliding connection. Each pressure-applying cross bar 123 is connected to the clamping column 122 through a second metal elastic sheet 125. The middle part of the pressure-applying cross bar 123 is spherical. Two-thirds of the spherical section in the middle of the pressure-applying cross bar 123 is located in the power card slot 124 opened on the side of the moving column 121.

[0031] After the protective cover plate 3 is closed, when the limiting collar 9 moves towards the outer side of the protective cover plate 3 under the action of magnetic force, the moving column 121 can move synchronously after the limiting collar 9 moves. After the moving column 121 moves, the edge of the power card slot 124 on it can squeeze the spherical arc surface in the middle of the pressing cross bar 123, causing the pressing cross bar 123 to move towards the flexible cable. After the pressing cross bar 123 moves, the second metal elastic sheet 125 can be deformed. Since the pressing cross bar 123 is located between adjacent connection terminals 2, the moved pressing cross bar 123 can squeeze and dent the flexible cable between the adjacent connection terminals 2 at this time, thereby improving the limiting effect on the flexible cable, enhancing the clamping force, and effectively improving the structural reliability. At the same time, one end of the pressing cross bar 123 in contact with the flexible cable is a flexible end, and the flexible end can be set as rubber or other components that can elastically deform, not limited to a certain buffer material. After the flexible end of the pressing cross bar 123 contacts the flexible cable, the elastic deformation of the flexible end can play a clamping and buffering role on the flexible cable, avoiding damage to the flexible cable caused by excessive clamping force. When the subsequent protective cover plate 3 is rotated and opened, when the limiting collar 9 is reset, the power card slot 124 on its moving column 121 releases the extrusion on the pressing cross bar 123, and the pressing cross bar 123 is reset under the action of the second metal elastic sheet 125.

[0032] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0033] In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0035] 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An FPC connector with a self-locking anti-drop cover, comprising a support base (1) and a connection terminal (2) plugged into the support base (1), the support base (1) being provided with a protective cover plate (3), and an adjustment shaft (4) fixed on the protective cover plate (3) being inserted into the connection terminal (2), characterized in that: The support base (1) is fixed with plug-in guide pillars (7) on both sides, and one end of the plug-in guide pillar (7) facing the center of the support base (1) is connected to a first magnetic block (8); a limiting ring (9) is arranged on the side of the protective cover (3), and a second magnetic block (10) is installed inside the limiting ring (9); the protective cover (3) is connected to the protective cover (3) through a first metal spring sheet (11), and the inner surface of the protective cover (3) is a smooth plane; a booster pressure component (12) for positioning the FPC is installed on the limiting ring (9); the first magnetic block (8) at the end of the plug-in guide pillar (7) is used to generate magnetic attraction to the second magnetic block (10) inside the limiting ring (9) on the side of the protective cover (3) after rotation and closure.

2. The FPC connector with a self-locking anti-detachment cover according to claim 1, characterized in that: One end of the connection terminal (2) close to the adjustment shaft (4) extends outwards to form a bent portion (5), and the adjustment shaft (4) is located on the inner side of the bent portion (5). The lower end of the connection terminal (2) is arched outwards in an area supporting the FPC to form an abutment portion (6).

3. The FPC connector with a self-locking anti-detachment cover according to claim 1, characterized in that: The first magnetic block (8) at the end of the plug-in guide column (7) has opposite magnetic properties to the second magnetic block (10) inside the limiting collar (9), and the side of the limiting collar (9) facing the plug-in guide column (7) is arranged as an open structure.

4. The FPC connector with a self-locking anti-detachment cover according to claim 3, characterized in that: In the initial state, the port of the limiting collar (9) is flush with the side of the protective cover plate (3), and the inner wall of the limiting collar (9) and the outer wall of the plug-in guide column (7) fit each other.

5. The FPC connector with a self-locking anti-detachment cover according to claim 1, characterized in that: The boost pressure component (12) comprises a movable column (121) fixed on a limiting collar (9), and a clamping column (122) is arranged on the inner side of the movable column (121), the middle part of the clamping column (122) is fixed on the protective cover plate (3), and a pressure cross bar (123) is arranged on the side of the clamping column (122), the pressure cross bar (123) passes through a power clamping slot (124) provided on the movable column (121), and one end of the pressure cross bar (123) extending into the interior of the clamping column (122) is connected to the clamping column (122) via a second metal spring sheet (125).

6. The FPC connector with a self-locking anti-detachment cover according to claim 5, characterized in that: The movable column (121) and the protective cover plate (3) are slidably connected, and the interior of the movable column (121) is configured as a hollow structure, and the power slot (124) and the pressure cross bar (123) on the movable column (121) correspond one to one.

7. The FPC connector with a self-locking anti-detachment cover according to claim 6, characterized in that: A plurality of pressure cross bars (123) are evenly distributed on the clamping column (122), and each pressure cross bar (123) is located between adjacent connection terminals (2).

8. The FPC connector with a self-locking anti-detachment cover according to claim 7, characterized in that: One end of the pressure cross bar (123) in contact with the flexible cable is set as a flexible end, and the pressure cross bar (123) and the clamping column (122) are slidably connected, and each pressure cross bar (123) is connected to each other through a second metal spring sheet (125) and the clamping column (122).

9. The FPC connector with a self-locking anti-detachment cover according to claim 8, characterized in that: The middle portion of the pressure cross bar (123) is configured to be spherical, and two-thirds of the spherical section in the middle portion of the pressure cross bar (123) is located in a power slot (124) provided on the side of the moving column (121).

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