Anti-static FPC flexible circuit board

Abstract

The utility model relates to the field of flexible circuit boards, in particular to an anti-static FPC (Flexible Printed Circuit). The anti-static FPC comprises a circuit board body, a connector and a reinforcing structure, the circuit board body comprises a base material layer, metal layers and protective layers, the base material layer is a core layer of the circuit board body, the metal layers are bonded to the two sides of the base material layer, the protective layers wrap the outer walls of the metal layers, the outer walls of the protective layers are coated with anti-static coatings, and the anti-static coatings are connected with the connector. One side of the end part of the circuit board body is fixedly connected with a connector, and the other side, close to one end of the connector, of the circuit board body is fixedly connected with a thickened reinforcing plate. The elastic sheet can be easily compressed or released by operating the notch in one side of the thickened reinforcing plate, so that the reinforcing structure can be quickly disassembled and assembled; by means of the design, the maintenance and upgrading efficiency is improved, and the damage risk caused by improper operation in the disassembly and assembly process is reduced.

Description

Technical Field

[0001] The utility model relates to the field of flexible circuit boards, in particular to an anti-static FPC flexible circuit board. Background Art

[0002] In the design and manufacturing of modern electronic devices, FPCs (flexible printed circuits) are widely used in smartphones, tablets, wearable devices, and various portable electronic products due to their excellent flexibility, lightweight, and high reliability. However, as the functions of electronic products become increasingly complex, the performance requirements for FPC circuit boards are also gradually increasing, especially in terms of anti-static, structural strength, and connection stability.

[0003] In traditional FPC (flexible printed circuit) designs, connectors are typically mounted on the circuit board body through welding, bonding, or other mechanical fixing methods. While these fixing methods achieve a certain degree of connector stability, they have significant limitations in practical applications.

[0004] Whether welding or bonding, when disassembling and assembling circuit boards, the connector often becomes a stress point due to the relatively rigid fixing method between the connector and the circuit board body. This localized stress not only easily causes damage to the connector itself, but may also be transmitted to the circuit board body through the connector, causing deformation or damage to the circuit board.

[0005] Therefore, it is necessary to provide a new anti-static FPC flexible circuit board to solve the above technical problems. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides an anti-static FPC flexible circuit board.

[0007] The anti-static FPC flexible circuit board provided by the utility model includes: a circuit board body, a connector and a reinforcement structure. The circuit board body includes: a base material layer, a metal layer and a protective layer. The base material layer is the core layer of the circuit board body. Metal layers are bonded on both sides of the base material layer. The outer wall of the metal layer is wrapped with a protective layer. The outer wall of the protective layer is coated with an anti-static coating. One side of the end of the circuit board body is fixedly connected to a connector, and the other side of the circuit board body close to one end of the connector is fixedly connected to a thickened reinforcement plate. A reinforcement structure is installed between the connector and the thickened reinforcement plate. The reinforcement structure includes: a reinforcement ring. Reinforcement rings are provided on both sides of the connector, and the reinforcement rings are installed in coordination with the thickened reinforcement plate.

[0008] Preferably, the reinforcement structure also includes: a limiting groove, a jack, a connecting groove, a card slot, a connecting hole, a spring clip and a spherical card block. A limiting groove is opened at both ends of the connector, a jack is symmetrically opened at one end of the thickened reinforcement plate, one end of the two reinforcement rings is placed on the inner wall of the limiting groove and plugged into the jack, a connecting groove is opened inside the thickened reinforcement plate, card slots are symmetrically opened on the inner wall of the connecting groove, a connecting hole is symmetrically opened at the bottom end of the reinforcement ring, a spring clip is plugged into the inner wall of the connecting groove, a spherical card block is symmetrically fixedly connected to the side where the spring clips are close to each other, and the spherical card block is plugged into the card slot.

[0009] Preferably, a notch is provided on one side of the thickened reinforcing plate, and the middle part of the shrapnel is exposed at the notch, so as to facilitate the removal of the shrapnel at a later time.

[0010] Preferably, connecting blocks are symmetrically fixedly connected to both ends of the thickened reinforcement plate for later plugging and unplugging of the connector.

[0011] Preferably, one end of the thickened reinforcement plate extends out of the circuit board body to form a protection to prevent the end of the circuit board body from being squeezed.

[0012] Preferably, the substrate layer is made of polyimide material, which has excellent heat resistance, chemical corrosion resistance and good mechanical strength.

[0013] Preferably, the metal layer is copper foil or aluminum foil with a thickness between 5 μm and 100 μm, and is used to provide the circuit board with electrical conductivity and signal transmission capability.

[0014] Preferably, the protective layer is made of polyimide resin or epoxy resin, and the antistatic coating coated on its outer wall is a conductive polymer material, which can effectively suppress the generation of static electricity and dissipate existing static electricity.

[0015] Compared with related technologies, the anti-static FPC flexible circuit board provided by the utility model has the following beneficial effects:

[0016] Improved connection stability: The innovative reinforcement structure design significantly enhances the connection between the connector and the circuit board. The tight coordination of the reinforcement ring, retaining groove, jack, connection slot, card slot, connection hole, spring clip, and spherical card block effectively reduces the shaking and displacement of the connector when subjected to external forces, ensuring the stability and reliability of signal transmission.

[0017] Simplified assembly and disassembly: The reinforced structure facilitates connector assembly and disassembly. A notch on one side of the thickened reinforcement plate allows for easy compression or release of the spring clip, enabling rapid assembly and disassembly of the reinforced structure. This design not only improves maintenance and upgrade efficiency but also reduces the risk of damage from improper handling during assembly and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a schematic diagram of the structure of the anti-static FPC flexible circuit board provided by the utility model;

[0019] Figure 2 for Figure 1 The schematic structural diagram of the connector shown;

[0020] Figure 3 for Figure 1 The thickened reinforcement plate is shown as a partially enlarged structural schematic diagram;

[0021] Figure 4 for Figure 1 The structural diagram of the reinforcement ring shown;

[0022] Figure 5 for Figure 1 The schematic diagram of the shrapnel and its partially enlarged structure is shown.

[0023] Numbers in the figure: 1. Circuit board body; 11. Base material layer; 12. Metal layer; 13. Protective layer; 2. Connector; 3. Thickened reinforcing plate; 4. Reinforcement structure; 5. Notch; 6. Connecting block; 41. Reinforcement ring; 42. Limiting groove; 43. Jack; 44. Connecting groove; 45. Card slot; 46. Connecting hole; 47. Spring piece; 48. Spherical card block. DETAILED DESCRIPTION

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

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

[0026] See also Figure 1-5, an anti-static FPC flexible circuit board, the anti-static FPC flexible circuit board includes: a circuit board body 1, a connector 2 and a reinforcement structure 4, the circuit board body 1 includes: a base material layer 11, a metal layer 12 and a protective layer 13, the base material layer 11 is the core layer of the circuit board body 1, the metal layer 12 is bonded on both sides of the base material layer 11, the outer wall of the metal layer 12 is wrapped with a protective layer 13, and the outer wall of the protective layer 13 is coated with an anti-static coating, one side of the end of the circuit board body 1 is fixedly connected with a connector 2, and the other side of the circuit board body 1 close to one end of the connector 2 is fixedly connected with a thickened reinforcement plate 3, a reinforcement structure 4 is installed between the connector 2 and the thickened reinforcement plate 3, and the reinforcement structure 4 includes: a reinforcement ring 41, and reinforcement rings are provided on both sides of the connector 2. Ring 41, the reinforcement ring 41 is installed in conjunction with the thickened reinforcement plate 3, and the two ends of the thickened reinforcement plate 3 are symmetrically fixedly connected with connecting blocks 6 for later plugging and unplugging the connector 2. One end of the thickened reinforcement plate 3 extends out of the circuit board body 1 to form a protection to prevent the end of the circuit board body 1 from being squeezed. The base material layer 11 is made of polyimide material with excellent heat resistance, chemical corrosion resistance and good mechanical strength. The metal layer 12 is copper foil or aluminum foil with a thickness of 5μm to 100μm, which is used to provide conductivity and signal transmission capability of the circuit board. The protective layer 13 is made of polyimide resin or epoxy resin, and the anti-static coating coated on its outer wall is a conductive polymer material, which can effectively suppress the generation of static electricity and dissipate existing static electricity.

[0027] See also Figure 2-5 The reinforcement structure 4 also includes: a limiting groove 42, a socket 43, a connecting groove 44, a card slot 45, a connecting hole 46, a spring piece 47 and a spherical block 48. A limiting groove 42 is provided at both ends of the connector 2, and a socket 43 is symmetrically provided at one end of the thickened reinforcement plate 3. One end of the two reinforcement rings 41 is placed on the inner wall of the limiting groove 42 and plugged into the socket 43. A connecting groove 44 is provided inside the thickened reinforcement plate 3, and a card slot 45 is symmetrically provided on the inner wall of the connecting groove 44. A connecting hole 46 is symmetrically provided at the bottom end of the reinforcement ring 41, and a spring piece 47 is plugged into the inner wall of the connecting groove 44. The side where the spring pieces 47 are close to each other is symmetrically fixed with a spherical block 48, and the spherical block 48 is plugged into the card slot 45. A notch 5 is provided on one side of the thickened reinforcement plate 3, and the middle part of the spring piece 47 leaks out at the notch 5, which is convenient for the later removal of the spring piece 47.

[0028] The working principle of the anti-static FPC flexible circuit board provided by the utility model is as follows:

[0029] First, the circuit board body 1 is composed of a substrate layer 11, a metal layer 12, and a protective layer 13. The substrate layer 11 serves as the core layer, providing the circuit board's foundational support and mechanical strength. The metal layer 12 is bonded to both sides of the substrate layer 11, ensuring the circuit's electrical conductivity and signal transmission capabilities. The protective layer 13 wraps around the outer surface of the metal layer 12, protecting it from environmental corrosion and providing an antistatic coating to effectively prevent static electricity from damaging circuit components.

[0030] The fixing method of the connector 2 adopts an innovative reinforcement structure 4 design. The connector 2 is fixedly connected to one end of the circuit board body 1 through a specific fixing method (such as welding). At the same time, a reinforcement structure 4 is installed between the connector 2 and the thickened reinforcement plate 3. The structure includes components such as a reinforcement ring 41, a limiting groove 42, a socket 43, a connection groove 44, a card slot 45, a connection hole 46, a spring 47 and a spherical card block 48. The reinforcement ring 41 is placed on both sides of the connector 2 and tightly fits with the connector 2 through the limiting groove 42. When one end of the reinforcement ring 41 is inserted into the socket 43 on the thickened reinforcement plate 3, the reinforcement structure 4 is initially formed. Furthermore, the bottom end of the reinforcement ring 41 is connected to the spring 47 inserted into the connection groove 44 through the connection hole 46, and the spherical card block 48 on the spring 47 is engaged with the card slot 45, thereby achieving complete locking of the reinforcement structure 4. This design not only enhances the connection strength between the connector 2 and the circuit board body 1 , but also reduces the shaking and displacement of the connector 2 when subjected to external forces by dispersing stress.

[0031] The design of the thickened reinforcement plate 3 also plays a key role. It not only provides additional support and strength for the circuit board body 1, but also, through its internal connection slots 44 and latching slots 45, cooperates with the reinforcement structure 4, further enhancing the securing effect of the connector 2. Furthermore, the notch 5 on one side of the thickened reinforcement plate 3 facilitates tool access to the spring clip 47 when needed, enabling quick assembly and disassembly of the reinforcement structure 4.

[0032] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An anti-static FPC flexible circuit board, characterized in that: include: A circuit board body (1), the circuit board body (1) comprising: a base material layer (11), a metal layer (12) and a protective layer (13), the base material layer (11) being the core layer of the circuit board body (1), the metal layer (12) being bonded to both sides of the base material layer (11), the outer wall of the metal layer (12) being wrapped with the protective layer (13), and the outer wall of the protective layer (13) being coated with an antistatic coating; A connector (2), one side of the end of the circuit board body (1) is fixedly connected to the connector (2), and the other side of the circuit board body (1) close to one end of the connector (2) is fixedly connected to a thickened reinforcement plate (3); A reinforcement structure (4) is installed between the connector (2) and the thickened reinforcement plate (3). The reinforcement structure (4) includes a reinforcement ring (41). The reinforcement rings (41) are provided on both sides of the connector (2). The reinforcement rings (41) are installed in conjunction with the thickened reinforcement plate (3).

2. The anti-static FPC flexible circuit board according to claim 1, characterized in that: The reinforcement structure (4) further comprises: a limiting groove (42), a socket (43), a connecting groove (44), a card slot (45), a connecting hole (46), a spring piece (47) and a spherical card block (48). The two ends of the connector (2) are provided with a limiting groove (42), one end of the thickened reinforcement plate (3) is symmetrically provided with a socket (43), one end of the two reinforcement rings (41) is placed on the inner wall of the limiting groove (42) and plugged into the socket (43), the inside of the thickened reinforcement plate (3) is provided with a connecting groove (44), the inner wall of the connecting groove (44) is symmetrically provided with a card slot (45), the bottom end of the reinforcement ring (41) is symmetrically provided with a connecting hole (46), the inner wall of the connecting groove (44) is plugged with a spring piece (47), and the side of the spring pieces (47) close to each other is symmetrically fixedly connected with a spherical card block (48), and the spherical card block (48) is carded into the card slot (45).

3. The anti-static FPC flexible circuit board according to claim 2, characterized in that: A notch (5) is provided on one side of the thickened reinforcing plate (3), and the middle portion of the shrapnel (47) leaks out from the notch (5).

4. The anti-static FPC flexible circuit board according to claim 1, characterized in that: Connecting blocks (6) are symmetrically fixedly connected to both ends of the thickened reinforcement plate (3).

5. The anti-static FPC flexible circuit board according to claim 1, characterized in that: One end of the thickened reinforcement plate (3) extends out of the circuit board body (1).

6. The anti-static FPC flexible circuit board according to claim 1, characterized in that: The substrate layer (11) is made of polyimide material.

7. The anti-static FPC flexible circuit board according to claim 1, characterized in that: The metal layer (12) is a copper foil, and its thickness is between 5 μm and 100 μm.

Images