CN221226686U

CN221226686U - FPC device

Info

Publication number: CN221226686U
Application number: CN202323189973.8U
Authority: CN
Inventors: 成海华
Original assignee: Shenzhen Weitong Electronics Co ltd
Current assignee: Shenzhen Weitong Electronics Co ltd
Priority date: 2023-11-23
Filing date: 2023-11-23
Publication date: 2024-06-25
Anticipated expiration: 2033-11-23

Abstract

The utility model relates to an FPC device, which comprises an FPC, a first connector and a stress release structure arranged at the joint of the FPC and the first connector, wherein one end of a conductor of the FPC is fixed with a corresponding terminal of the first connector and is connected with the corresponding terminal in a conductive manner, and the thickness of the stress release structure is gradually reduced along the direction away from the first connector. The FPC device is provided with the stress release structure at the joint of the FPC and the connector, and can resist bending and twisting more.

Description

FPC device

[ Field of technology ]

The present utility model relates to an FPC device.

[ Background Art ]

Today, with increasingly advanced technology, USB C connectors have been widely used, and almost all of the mobile phones, computers, and mobile devices are peripheral to USB C connectors. In the case of a mobile phone, which is almost a hand of one, there is a great market and business opportunity for accessories around the mobile phone. An existing FPC device employs a cylindrical wire body that is wrapped around and connected to a USB C connector. The outer diameter of the cylindrical wire body is between 2.0 and 6.0mm, and the cylindrical wire body has relatively hard hand feeling, is not resistant to bending and is not resistant to twisting. After a period of use, the connection of the wire body and the USB C connector is easily broken or fractured. Thus, an improvement is needed.

[ utility model ]

The application aims to provide an FPC device with improved bending and twisting resistance.

To this end, the present application provides an FPC device including an FPC, a first connector, and a stress release structure provided at a junction of the FPC and the first connector, one end of a conductor of the FPC being fixed to and conductively connected to a corresponding terminal of the first connector, the thickness of the stress release structure gradually decreasing in a direction away from the first connector.

In one embodiment of the utility model, the width of the stress relief is tapered in a direction away from the first connector.

In one embodiment of the utility model, a connection part of the FPC and the first connector is at least partially covered with a first injection molding piece, the front surface of the FPC is covered with a second injection molding piece, and one end of the second injection molding piece is fixedly connected with the first injection molding piece; the first injection molding piece and the second injection molding piece are sequentially and respectively molded or molded in one step.

In one embodiment of the utility model, the second injection molded part comprises an integrally formed connector, the two sides of the connector being substantially aligned with the two sides of the FPC; the connecting piece is located the back of FPC and both ends are connected to respectively the both sides of first injection molding.

In one embodiment of the utility model, the back of the FPC is covered with a third injection molding piece, and the third injection molding piece is fixedly connected with the first injection molding piece, the second injection molding piece and the connecting piece.

In one embodiment of the utility model, the stress relief structure comprises a first stress relief structure and a second stress relief structure; the first stress release structure is formed at the joint of the front surface of the FPC of the second injection molding piece and the first connector; the second stress release structure is formed at the joint of the back surface of the FPC and the first connector of the third injection molding piece; the first and second stress relief structures are integrally connected.

In one embodiment of the present utility model, the outer surface of the second injection molding piece forms a first flat surface, and the extending direction of the first flat surface is substantially parallel to the front surface of the FPC; the outer surface of the third injection molding piece forms a second flat surface, and the extending direction of the second flat surface is basically parallel to the back surface of the FPC; the third injection-molded part and the second injection-molded part form a flat wire body.

In one embodiment of the present utility model, the FPC device further has a second connector, and the other end of the conductor of the FPC is fixed to and conductively connected with a corresponding terminal of the second connector; a fourth injection molding piece is covered at the joint of the FPC and the second connector; the other end of the second injection molding piece is fixedly connected with the fourth injection molding piece on the front surface of the FPC; and the third injection molding piece is fixedly connected with the fourth injection molding piece on the back surface of the FPC.

In one embodiment of the utility model, the second injection molding forms a third stress relief structure at the junction of the front face of the FPC and the second connector; the third injection molding piece forms a fourth stress release structure at the joint of the back surface of the FPC and the second connector; and the third stress relief is integrally connected to the fourth stress relief.

In one embodiment of the present utility model, the width of the second connector is substantially equal to the width of the FPC, and the widths of the third stress relief structure and the fourth stress relief structure remain unchanged in a direction away from the second connector.

According to the FPC device, the bending-resistant and torsion-resistant FPC is arranged in the wire body, and the stress release structure is arranged at the joint of the FPC and the connector, so that the FPC device can resist bending and torsion more.

[ Description of the drawings ]

For a further disclosure of the present invention, reference is first made to the accompanying drawings, in which:

FIG. 1 is a schematic view of an FPC assembly having a first injection molded portion and a first connector according to one embodiment of the present utility model;

FIG. 2 is a schematic side view of the FPC assembly of FIG. 1 covered by a second injection molding member in accordance with the present utility model; FIGS. 3 and 4 are schematic views of the front and back sides, respectively, of the FPC assembly of FIG. 2;

FIGS. 5 and 6 are schematic diagrams of a side and front view, respectively, of the FPC assembly of FIG. 2 having a third injection molded portion according to the present utility model;

FIG. 7 is a schematic view of the FPC assembly of FIG. 1 with a second connector and a fourth injection molded member according to the present utility model;

Fig. 8 and 9 are schematic views of the front surface of the FPC assembly shown in fig. 7 covered with the second injection molding member and the rear surface of the FPC assembly covered with the third injection molding member, respectively.

[ Detailed description ] of the invention

The technical solutions in the embodiments of the present utility model will be described below with reference to the accompanying drawings.

Referring to fig. 1, the FPC apparatus 100 provided by the present utility model includes an FPC (flexible circuit board) 10 and a first connector 20; one end of the conductor of the FPC10 is fixedly connected to a corresponding terminal of the first connector 20. Understandably, in this embodiment, the FPC10 is in the shape of an elongated sheet having the characteristics of bending resistance and torsion resistance. Also, since the FPC10 is thin, it is easily bent or curled only in the length direction, and is not easily bent or curled in the lateral direction thereof.

In this embodiment, the connection between the FPC 10 and the first connector 20 is at least partially covered by the first injection molding 22. Preferably, the first injection molding 22 surrounds the connection of the FPC 10 and the first connector 20; more preferably, the first injection molded part 22 surrounds a portion of the first connector 20.

Referring to fig. 2 and 3, the front surface of the fpc 10 is covered with the second injection molding 12. Since the FPC 10 has a long shape, the second injection molded member 12 has a long shape. One end of the second injection molding 12 is fixedly connected to the first injection molding 22. Referring to fig. 3, two sides 12a of the second injection molding 12 respectively extend beyond two sides of the FPC 10. It will be appreciated that the first and second injection molded parts 22, 12 may be formed separately in sequence. For example, a first injection molding process is performed to obtain a first injection molded part 22, and a second injection molding process is performed to obtain a second injection molded part 12 after covering the connection between the FPC 10 and the first connector 20. In alternative embodiments, the first injection molded part 22 and the second injection molded part 12 may be formed in one piece, both being a unitary injection molded body.

Referring to fig. 4, in the present embodiment, the second injection molding member 12 further includes an integrally formed connecting member 15, the connecting member 15 is located on the back surface of the FPC 10, two sides of the connecting member 15 are substantially aligned with two sides of the FPC 10, and two sides of the connecting member 15 are respectively connected to two sides of the first injection molding member 22. The connector 15 allows the FPC 10 to be fixed to the first injection-molded member 22 in an embedded manner, while preventing the first injection-molded member 22 from falling off the FPC 10 during the manufacturing process. In this way, the connection reliability of the first injection-molded member 22 with the FPC 10 is enhanced.

Referring to fig. 5 and 6, further, the back surface of the FPC10 is covered with a third injection molded member 16. The third injection part 16 is fixedly connected with the first injection part 22, the second injection part 12 and the connecting part 15. The outer surface of the second injection molding member 12 forms a first flat surface, and the extending direction of the first flat surface is basically parallel to the front surface of the FPC 10; the outer surface of the third injection molding 16 forms a second flat surface, and the extending direction of the second flat surface is basically parallel to the back surface of the FPC 10; the third injection-molded part 16 and the second injection-molded part 12 are fixedly connected to form a flat wire body. In this embodiment, the first flat surface is provided with a first pattern, and the first pattern is a concave-convex stripe and/or a concave-convex grid. The second flat surface is provided with a second pattern, and the second pattern is concave-convex stripes and/or concave-convex grids.

Referring to fig. 1 to 6, it is preferable that a stress release structure is provided at a connection portion of the FPC 10 and the first connector 20. The stress relief structure can further improve the bending and twisting resistance of the connection of the wire body with the first connector 20. Specifically, the thickness of the stress relief structure gradually decreases in a direction away from the first connector 20. In this way, the connection strength of the connection portion of the FPC 10 and the first connector 20 is further enhanced by the thickness.

Referring to fig. 5, in particular, the stress relief structure includes a first stress relief structure 13 and a second stress relief structure 17. The first stress release structure 13 is formed at the junction of the front surface of the FPC10 of the second injection member 12 and the first connector 20. The second stress relief structure 17 is formed at the junction of the back surface of the FPC10 and the first connector 20 of the third injection member 16. In this embodiment, the first stress relief 13 and the second stress relief 17 are connected as a single piece. The first stress relief 13 is provided with a first pattern; the surface of the second stress relief means 17 is provided with a second pattern.

In this embodiment, the width of the first connector 20 is larger than the width of the FPC. For example, the first connector 20 is a USB a connector or an HDMI connector. The thickness of the first stress relief 13 is gradually reduced, and the width of the first stress relief 13 and the width of the second stress relief 17 are gradually reduced, in a direction away from the first connector 20.

Referring to fig. 7 to 9, further, the FPC apparatus 100 further has a second connector 30, and the other end of the conductor of the FPC10 is fixed to and electrically connected with a corresponding terminal of the second connector 30. Similarly, the connection of the FPC10 and the second connector 30 is covered with a fourth injection-molded member 32; preferably, the fourth injection molding 32 surrounds the connection of the FPC10 and the second connector 30; more preferably, a portion of the second connector 30 is also wrapped around. The other end of the second injection molding piece 12 is fixedly connected with a fourth injection molding piece 32 on the front surface of the FPC 10; on the back side of the FPC10, the third injection-molded member 16 is fixedly connected with the fourth injection-molded member 32.

Referring to fig. 8 and 9, similarly, the second injection molding 12 forms a third stress relief structure 14 at the junction of the front surface of the FPC10 and the second connector 30. The third injection molding 16 forms a fourth stress relief 18 at the junction of the back of the FPC10 and the second connector 30. The third stress relief 14 is integrally connected to the fourth stress relief 18. In this manner, the third and fourth stress relief structures 14, 18 increase the bending and twisting resistance of the connection of the wire body to the second connector 30.

In this embodiment, the width of the second connector 30 is substantially equal to the width of the FPC10, for example, the second connector 30 is a USB C connector. The thickness of the third and fourth stress relief structures 14 and 18 decreases gradually in a direction away from the second connector 30 and the width remains unchanged. The surface of the third stress relief structure 14 is provided with a first pattern; the surface of the fourth stress release structure 18 is provided with the second pattern, so that the patterns on the front and back surfaces of the wires are consistent, and the FPC device main body is more attractive.

The present utility model is not limited to the style-type arrangement of the first connector 20 and the second connector 30. It is understood that the first connector 20, the second connector 30 may be selected from, but not limited to, the following types of connectors: USB C male connector, USB C female connector, USB A male connector, USB A female connector, HDMI male connector, HDMI female connector, displayport male connector, displayport female connector, RJ45 female connector, VGA female connector, etc.

The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. The utility model provides a FPC device, its characterized in that includes FPC (10), first connector (20) and sets up the stress relief structure of the junction of FPC (10) and first connector (20), the one end of the conductor of FPC (10) is fixed and electrically conductive with the corresponding terminal of first connector (20) is connected, the thickness of stress relief structure reduces gradually along the direction of keeping away from first connector (20).

2. FPC device according to claim 1, characterized in that the width of the stress relief structure gradually decreases in a direction away from the first connector (20).

3. The FPC device according to claim 1, characterized in that a connection of the FPC (10) and the first connector (20) is at least partially covered with a first injection molding (22), a front surface of the FPC (10) is covered with a second injection molding (12), and one end of the second injection molding (12) is fixedly connected with the first injection molding (22); the first injection molding piece (22) and the second injection molding piece (12) are sequentially and respectively molded or molded at one time.

4. A FPC device according to claim 3, characterized in that the second injection-molded part (12) comprises an integrally formed connection piece (15), both sides of which are substantially aligned with both sides of the FPC; the connecting piece (15) is positioned on the back surface of the FPC (10) and two ends of the connecting piece are respectively connected to two sides of the first injection molding piece (22).

5. The FPC device according to claim 4, characterized in that the back of the FPC (10) is covered with a third injection-molded part (16), and the third injection-molded part (16) is fixedly connected with the first injection-molded part (22), the second injection-molded part (12) and the connecting part (15).

6. FPC device according to claim 5, characterized in that the stress relief structure comprises a first stress relief structure (13) and a second stress relief structure (17); the first stress release structure (13) is formed at the joint of the front surface of the FPC (10) of the second injection molding piece (12) and the first connector (20); the second stress release structure (17) is formed at the joint of the back surface of the FPC (10) and the first connector (20) of the third injection molding piece (16); the first stress relief (13) and the second stress relief (17) are connected in one piece.

7. The FPC device according to claim 5, characterized in that the outer surface of the second injection-molded part (12) forms a first flat surface, the extension direction of which is substantially parallel to the front surface of the FPC (10); the outer surface of the third injection molding piece (16) forms a second flat surface, and the extending direction of the second flat surface is basically parallel to the back surface of the FPC (10); the third injection-molded part (16) and the second injection-molded part (12) form a flat wire body.

8. The FPC device according to claim 5, characterized in that the FPC device further has a second connector (30), the other end of the conductor of the FPC (10) being fixed and conductively connected to a corresponding terminal of the second connector (30); a fourth injection molding piece (32) is covered at the joint of the FPC (10) and the second connector (30); the other end of the second injection molding piece (12) is fixedly connected with a fourth injection molding piece (32) on the front surface of the FPC (10); the third injection molding piece (16) is fixedly connected with the fourth injection molding piece (32) on the back surface of the FPC (10).

9. The FPC device according to claim 8, characterized in that the second injection molding (12) forms a third stress relief structure (14) at the connection of the front face of the FPC (10) with the second connector (30); the third injection molding piece (16) forms a fourth stress release structure (18) at the connection part of the back surface of the FPC (10) and the second connector (30); and the third stress relief (14) is integrally connected to the fourth stress relief (18).

10. The FPC device according to claim 8, wherein the width of the second connector (30) is substantially equal to the width of the FPC (10), and the widths of the third stress relief structure (14) and the fourth stress relief structure (18) remain unchanged in a direction away from the second connector (30).