Flexible flat cable (FFC) device for rollable display

Abstract

The utility model discloses a flexible flat cable (FFC) device for a rollable display, which relates to the technical field of flat cables and comprises a flat cable body and first connecting pieces fixedly connected to two ends of the flat cable body along the length direction of the flat cable body, and one side, far away from the flat cable body, of each first connecting piece is connected with a second connecting piece. A slot I is formed in the center of one side wall, close to the connecting piece I, of the connecting piece II towards the interior of the connecting piece II; slots II are formed in two ends, in the width direction of the flat cable body, of one side wall, close to the connecting piece I, of the connecting piece II towards the interior of the connecting piece II; according to the utility model, through the rotating rod I, the rotating rod II, the sliding column and the sliding chute I, the quick connection of the connecting piece I and the connecting piece II is realized, and during installation, an operator only needs to insert the rotating rod I and the rotating rod II into the sliding chute II to enable the sliding column to slide along the sliding chute I, so that the connection of the connecting piece I and the connecting piece II can be easily completed; the installation steps are simplified, the installation efficiency is improved, and the installation time is shortened.

Description

Technical Field

[0001] This utility model relates to the field of ribbon cable technology, specifically to a flexible FFC ribbon cable device for a rollable display. Background Technology

[0002] FFC (Flexible Fabric Cable) is a flexible flat cable made of polyimide or polyester film as the substrate. Conductive lines are formed on the film through etching, and then a protective film is applied. It features high flexibility, thinness, and bendability, enabling the connection of complex circuits within a limited space. It is widely used in various electronic devices, such as mobile phones, tablets, wearable devices, medical electronic instruments, and rollable displays, providing stable and reliable electrical connections and signal transmission between internal components.

[0003] In the production process of existing rollable displays and other electronic devices, the installation of FFC flexible ribbon cables is a crucial step. However, the current installation methods have many inconveniences. On the one hand, the installation process is usually quite cumbersome, requiring a lot of time and effort. Operators need to accurately align the ribbon cable with the connecting components. On the other hand, because the ribbon cable itself is quite flexible, if the operation is not done properly during installation, the ends can easily be bent by external forces. If the bending angle is too large, it may damage the conductive lines inside the ribbon cable, affecting the signal transmission quality, or even causing the ribbon cable to be scrapped. In particular, the ends of the ribbon cable are more susceptible to pulling. This pulling force may loosen the connection between the ribbon cable and the connecting components, reduce the stability of the connection, and thus affect the normal operation of the equipment.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] The purpose of this invention is to provide a flexible FFC cable device for rollable displays to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a flexible FFC cable device for a rollable display, including a cable body and a connector 1 fixedly connected to both ends of the cable body along its length. A connector 2 is connected to the side of the connector 1 away from the cable body. A slot 1 is provided at the center of the side wall of the connector 2 near the connector 1, facing inward. Slots 2 are provided at both ends of the side wall of the connector 2 near the connector 1 along the width direction of the cable body, facing inward. A sliding groove 1 is provided on the bottom inner wall of the slot 2. A rotating rod 1 is fixed at the position of the connector 1 near the connector 2 corresponding to the slot 2. A rotating rod 2 is rotatably connected to the end of the rotating rod 1 away from the connector 1. A sliding column is fixed at the bottom of the end of the rotating rod 2 away from the rotating rod 1, and the sliding column slides in the sliding groove 1.

[0007] Furthermore, the slide groove one includes a vertical part and a locking part. The length direction of the vertical part is consistent with the length direction of the cable body, and the end of the vertical part near the connector one passes through the side wall of the connector two near the connector one and communicates with the interior of the slot two. The locking part is located on the side of the vertical part away from the connector one. The locking part is a heart-shaped limiting slide groove connected to the side of the vertical part away from the connector one. A torsion spring is provided at the rotation connection of the rotating rod one and the rotating rod two. The slot two provides sufficient rotation space for the rotating rod one and the rotating rod two. The top and bottom ends of the side wall of the connector two near the connector one are both provided with the slide groove two facing the interior of the connector two. A pressure plate slides vertically in the slide groove two. The horizontal cross section of the pressure plate is "door" shaped and the notch is set away from the connector one. A terminal is provided in the middle of the side wall of the connector one near the connector two. The terminal can be inserted into the slot one.

[0008] Furthermore, the second slide groove and the second slot are interconnected, while the first slot is not interconnected with the second slot or the second slide groove. Both sides of the pressure plate along its length are fixed with wedge blocks of the same structure. The length direction of the wedge blocks is consistent with the length direction of the cable body. The side wall of the wedge block near the connector is inclined. The side wall of the wedge block near the connector slides against the second wedge block. The inclination angles of the inclined surfaces of the side walls of the wedge block and the wedge block are complementary. The second wedge block is fixed to the top center of the rotating rod.

[0009] Furthermore, a reset spring is fixed at both ends of the bottom of the pressure plate along the width direction of the cable body. The reset spring is set in the second slide groove. The end of the reset spring away from the pressure plate is fixed on the inner wall of the bottom of the second slide groove. The top and bottom side wall of the first connector are provided with grooves. The grooves are adapted to the pressure plate. When the pressure plate is inserted into the groove, the top of the pressure plate is flush with the top of the first connector.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. By using rotating rod one, rotating rod two, sliding column and sliding groove one, the connection between connector one and connector two is realized quickly. During installation, the operator only needs to insert rotating rod one and rotating rod two into sliding groove two, and let the sliding column slide along sliding groove one to easily complete the connection between connector one and connector two, which simplifies the installation steps, improves installation efficiency and reduces installation time.

[0012] 2. When connector one and connector two are connected, wedge one and wedge two slide against each other. This abutting action will push the pressure plate downward, so that the pressure plate will further compact the ribbon cable body. The pressure plate will firmly fix the ribbon cable body between the connectors, effectively preventing the ribbon cable end from being bent or pulled after installation. This not only protects the conductive lines inside the ribbon cable and ensures the stability of signal transmission, but also improves the reliability of the connection between the ribbon cable and the connecting parts, extends the service life of the ribbon cable, and thus improves the performance and stability of the entire electronic device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram showing the positional relationship between connector one and connector two in an FFC flexible ribbon cable device for a rollable display.

[0014] Figure 2 This is a schematic diagram of a connector in an FFC flexible cable device for a rollable display.

[0015] Figure 3 This is a schematic diagram of the second connector in an FFC flexible cable device for a rollable display.

[0016] Figure 4 This is a partial cross-sectional view of the inner side of connector two in a rollable display FFC flexible cable device;

[0017] Figure 5 This is a schematic diagram of the overall structure of an FFC flexible ribbon cable device for a rollable display.

[0018] In the picture:

[0019] 10. Cable body; 11. Connector 1; 12. Connector 2; 13. Rotating rod 1; 14. Rotating rod 2; 15. Sliding column; 16. Sliding groove 1;

[0020] 20. Pressure plate; 21. Wedge block one; 22. Wedge block two;

[0021] 30. Slot 1; 31. Slot 2; 32. Slide 2. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see the appendix Figure 1 To be continued Figure 5This utility model provides a flexible FFC cable device for a rollable display: it includes a cable body 10 and a connector 11 fixedly connected to both ends of the cable body 10 along its length direction. A connector 2 12 is connected to the side of the connector 11 away from the cable body 10. A slot 30 is provided at the center of the side wall of the connector 2 12 near the connector 11, facing the inside of the connector 2 12. Both ends of the side wall of the connector 2 12 near the connector 11 along the width direction of the cable body 10 are provided with slots 2 31 facing the inside of the connector 2 12. A sliding groove 16 is provided on the bottom inner wall of the slot 2 31. A rotating rod 13 is fixed at the position of the slot 2 31 on the side wall of the connector 11 near the connector 2 12. A rotating rod 2 14 is rotatably connected to the end of the rotating rod 13 away from the connector 11. A sliding column 15 is fixed at the bottom of the end of the rotating rod 2 14 away from the rotating rod 13. The sliding column 15 slides in the sliding groove 16.

[0024] The slide groove 16 includes a vertical part and a locking part. The length direction of the vertical part is consistent with the length direction of the cable body 10. The end of the vertical part near the connector 11 passes through the side wall of the connector 2 12 near the connector 11 and communicates with the interior of the slot 2 31. The locking part is located on the side of the vertical part away from the connector 11. The locking part is a heart-shaped limiting slide groove connected to the side of the vertical part away from the connector 11.

[0025] A torsion spring is provided at the rotational connection between the first rotating rod 13 and the second rotating rod 14. The second slot 31 provides sufficient rotational space for the first rotating rod 13 and the second rotating rod 14. The top and bottom ends of the side wall of the second connector 12 near the first connector 11 are provided with a sliding groove 32 facing the inside of the second connector 12. A pressure plate 20 slides vertically in the sliding groove 32.

[0026] The connector 11 has grooves at the center of its top and bottom sidewalls. The grooves are adapted to the pressure plate 20. When the pressure plate 20 is inserted into the groove, the top of the pressure plate 20 is flush with the top of the connector 11.

[0027] It should be noted that: when the connector 11 and connector 2 12 are aligned, the rotating rod 13 corresponds to the position of the slot 2 31. At this time, the rotating rod 13 and rotating rod 2 14 are in a parallel state under the action of the torsion spring, and the sliding column 15 is located at the end of the vertical part of the sliding groove 16 near the connector 11.

[0028] Push connector 11 toward connector 2 12. After the bottom of rotating rod 2 14 contacts connector 2 12, continue to push connector 11. Sliding rod 15 slides along the vertical part of sliding groove 16 into the locking part. At the same time, rotating rod 2 14 will adaptively rotate around rotating rod 13. Since the locking part is a heart-shaped limiting sliding groove, sliding rod 15 will be stuck after entering the locking part, thus achieving a firm connection between connector 11 and connector 2 12 and preventing them from separating on their own.

[0029] Furthermore, the locking part on the slide groove 16 includes a "V"-shaped advancing part located at the end of the vertical part away from the connector 11. Both ends of the advancing part are connected to "∧"-shaped rotating parts. The advancing part is recessed inwards away from the connector 11, and the rotating part is recessed inwards towards the connector 11. The advancing part and the rotating part are interconnected to form a "heart"-shaped limiting slide groove. The inner arc wall at the connection point is treated with an arc surface. Therefore, when the slide column 15 slides into the recess of the rotating part, it will not be able to actively leave the slot 2 31.

[0030] Please see the appendix Figure 1 To be continued Figure 5 The present invention provides a technical solution: the horizontal cross section of the pressure plate 20 is "door" shaped and the notch is set facing away from the connector 11. The connector 11 is provided with a terminal block in the middle of the side wall near the connector 2 12. The terminal block can be inserted into the slot 30.

[0031] The second slide groove 32 is interconnected with the second slot 31. The first slot 30 is not interconnected with the second slot 31 and the second slide groove 32. The pressure plate 20 has wedge blocks 21 with the same structure fixed on both sides along its length direction. The length direction of the wedge block 21 is consistent with the length direction of the cable body 10. The side wall of the wedge block 21 near the connector 11 is inclined.

[0032] The wedge block 21 slides against the side wall of the connector 11, and the inclined angles of the side walls of the wedge block 21 and the wedge block 22 are complementary. The wedge block 22 is fixed to the top middle of the rotating rod 13.

[0033] Both ends of the bottom of the pressure plate 20 along the width direction of the cable body 10 are fixed with a return spring. The return spring is set in the slide groove 32, and the end of the return spring away from the pressure plate 20 is fixed to the inner wall of the bottom of the slide groove 32.

[0034] It should be noted that during the connection process between connector 11 and connector 22, the rotating rod 13 will drive the wedge block 22 to move synchronously. The inclined angles of the side walls of wedge block 121 and wedge block 22 that are close to each other are complementary. Therefore, wedge block 22 will force wedge block 121 to slide in the vertical direction, thereby pushing the pressure plate 20 to move downward. The pressure plate 20 slides vertically along the slide groove 232. At the same time, the return spring is compressed. When the pressure plate 20 moves downward to a certain position, it will be inserted into the groove at the center of the top and bottom side walls of connector 11. At this time, the top of the pressure plate 20 is flush with the top of connector 11. The pressure plate 20 clamps and fixes the ribbon cable body 10, thus completing the fixation of the ribbon cable body 10 and effectively preventing the ribbon cable end from being bent or pulled.

[0035] When it is necessary to separate connector 11 and connector 12, simply push connector 11 again to make the slide column 15 slide out from the other side of the locking part of slide groove 16 and then slide into the vertical part to reset. At the same time, the sliding contact between wedge block 121 and wedge block 22, combined with the reset spring, causes the pressure plate 20 to move upward. Rotating rod 13 and rotating rod 24 return to their initial positions under the action of the torsion spring, thus realizing the separation of connector 11 and connector 12.

[0036] Working principle:

[0037] Align connector 11 and connector 2 12, push connector 11, slide column 15 along the vertical part of slide groove 1 16 to the locking part to achieve connection between the two. When connecting, rotate rod 1 13 drives wedge block 2 22 to move. Wedge block 2 22 slides against wedge block 1 21, pushing pressure plate 20 downward. Pressure plate 20 compresses the reset spring and inserts into the groove of connector 1 11 to fix the cable body 10. When separating, push connector 1 11 inward again to make slide column 15 slide out from the other side of the locking part on slide groove 1 16 and thus reset. Then connector 1 11 can be pulled out.

Claims

1. A flexible FFC cable device for a rollable display, comprising a cable body (10) and connectors (11) fixedly connected to both ends of the cable body (10) along its length, characterized in that: The first connector (11) is connected to the second connector (12) on the side away from the main body (10). The second connector (12) has a slot (30) at the center of the side wall near the first connector (11) facing the inside of the second connector (12). The two ends of the second connector (12) along the width direction of the main body (10) are both provided with slots (31) facing the inside of the second connector (12). The bottom inner wall of the slot (31) is provided with a sliding groove (16). The first rotating rod (13) is fixed at the position of the second slot (31) on the side wall near the first connector (11) corresponding to the first connector (12). The end of the first rotating rod (13) away from the first connector (11) is rotatably connected to the second rotating rod (14). The bottom of the end of the second rotating rod (14) away from the first rotating rod (13) is fixed with a sliding column (15). The sliding column (15) slides in the sliding groove (16).

2. The FFC flexible ribbon cable device for a rollable display as described in claim 1, characterized in that: The first groove (16) includes a vertical part and a locking part. The length direction of the vertical part is consistent with the length direction of the cable body (10). The end of the vertical part near the first connector (11) passes through the side wall of the second connector (12) near the first connector (11) and communicates with the inside of the second slot (31). The locking part is located on the side of the vertical part away from the first connector (11). The locking part is a heart-shaped limiting groove connected to the side of the vertical part away from the first connector (11).

3. The FFC flexible ribbon cable device for a rollable display as described in claim 1, characterized in that: A torsion spring is provided at the rotational connection between the first rotating rod (13) and the second rotating rod (14). The second slot (31) provides sufficient rotational space for the first rotating rod (13) and the second rotating rod (14). The top and bottom ends of the side wall of the second connector (12) near the first connector (11) are provided with a second sliding groove (32) facing the inside of the second connector (12). A pressure plate (20) slides vertically inside the second sliding groove (32).

4. The FFC flexible ribbon cable device for a rollable display as described in claim 3, characterized in that: The pressure plate (20) has a horizontal cross section in the shape of a "door" and the notch is set facing away from the connector one (11). The connector one (11) has a wiring terminal in the middle of the side wall near the connector two (12). The wiring terminal can be inserted into the slot one (30).

5. The FFC flexible ribbon cable device for a rollable display as described in claim 3, characterized in that: The second slide (32) is connected to the second slot (31), while the first slot (30) is not connected to the second slot (31) and the second slide (32). The pressure plate (20) has wedge-shaped blocks (21) with the same structure fixed on both sides of its length direction. The length direction of the wedge-shaped blocks (21) is consistent with the length direction of the cable body (10). The side wall of the wedge-shaped blocks (21) near the connector (11) is inclined.

6. The FFC flexible ribbon cable device for a rollable display as described in claim 5, characterized in that: The wedge block one (21) slides against the side wall of the connector one (11) with the wedge block two (22). The inclined angles of the side walls of the wedge block one (21) and the wedge block two (22) are complementary. The wedge block two (22) is fixed to the top center of the rotating rod one (13).

7. The FFC flexible ribbon cable device for a rollable display as described in claim 3, characterized in that: The bottom of the pressure plate (20) is fixed with a return spring at both ends along the width direction of the cable body (10). The return spring is set in the slide groove (32), and the end of the return spring away from the pressure plate (20) is fixed to the inner wall of the bottom of the slide groove (32).

8. The FFC flexible ribbon cable device for a rollable display as described in claim 1, characterized in that: The connector (11) has grooves at the center of its top and bottom sidewalls. The grooves are adapted to the pressure plate (20). When the pressure plate (20) is inserted into the groove, the top of the pressure plate (20) is flush with the top of the connector (11).

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