A splicable flexible circuit board

Abstract

The utility model discloses a splicable flexible circuit board, including a plurality of flexible circuit board bodies with the same structure, a convex piece is evenly fixed on one side of the flexible circuit board body, a splicing slot with a side opening is arranged in the convex piece, and a pressing spring piece is inlaid and fixed on the top wall of the splicing slot; a splicing card is arranged on one side of the flexible circuit board body, and a conductive gold finger is arranged on the splicing card; adjacent flexible circuit board bodies are spliced, and the splicing card on one flexible circuit board is inserted into the splicing slot on another flexible circuit board. The structure of the utility model is reasonable, and the splicing operation can be effectively and quickly realized, and the effectiveness of the splicing and the effectiveness of the electrical connection can be guaranteed by the pressing spring piece, and the splicing operation is convenient, and it does not need to weld the corresponding connector on the flexible circuit board, which is conducive to reducing costs, and is also conducive to splicing assembly connection, stable and reliable to use, strong applicability and good practicality.

Description

Technical Field

[0001] The utility model belongs to the technical field of flexible circuit boards, and in particular relates to a splicable flexible circuit board. Background Art

[0002] Flexible circuit boards, also known as "soft substrates", are printed circuits made of flexible insulating substrates. Flexible circuits provide excellent electrical properties, can meet the design requirements of small and higher density installations, and are also conducive to reducing assembly processes and enhancing reliability. They can be bent, rolled and folded freely, so that they can be arranged in different spatial ranges, and can be moved and stretched arbitrarily in three-dimensional space, and greatly reduce the size and weight of electronic products. In the prior art, flexible circuit boards are mostly small-block structures. In actual application, flexible circuit boards need to be spliced ​​and assembled according to the use requirements of specific products. In conventional applications, they are mostly spliced ​​and assembled by bolts, which not only takes a long time to install, but also easily causes damage to the flexible circuit board during disassembly and assembly, thereby affecting the stability and reliability of the use of the flexible circuit board, and limiting its applicability and practicality. Utility Model Content

[0003] The utility model aims to provide a splicable flexible circuit board which has a reasonable structure and is conducive to splicing and assembling.

[0004] The technical solution to achieve the purpose of the utility model is a splicable flexible circuit board, comprising a plurality of flexible circuit board bodies with the same structure, a convex piece is evenly fixed on one side of the flexible circuit board body, a splicing slot with a side opening is arranged in the convex piece, and a pressing spring piece is embedded and fixed on the top wall of the splicing slot;

[0005] A splicing card is arranged on one side of the flexible circuit board body, and the splicing card and the protruding piece are arranged on different sides of the flexible circuit board body;

[0006] Conductive gold fingers are provided on the splicing card;

[0007] Adjacent flexible circuit board bodies are spliced, a splicing card on one flexible circuit board is inserted into a splicing slot on another flexible circuit board, and the pressing spring piece abuts against the conductive gold finger for electrical connection.

[0008] Further preferably, a rack inclined toward one side of the flexible circuit board body is provided on the inner wall of the splicing slot;

[0009] The splicing card is provided with a clamping convex strip in the opposite direction to the rack;

[0010] The splicing card is inserted into the splicing slot, and the rack is snapped into the upper limit position of the snapping convex strip.

[0011] It is further preferred that: the height of the splicing slot is not less than the thickness of the splicing card.

[0012] Further preferably, the flexible circuit board body comprises a polyimide matrix, an isolation layer arranged on the polyimide matrix through an adhesive layer, a copper foil layer arranged on the isolation layer through an adhesive layer, and a coating layer arranged on the copper foil layer through an adhesive layer;

[0013] The protruding piece and the splicing card are both polyimide sheets, and the polyimide matrix is ​​integrally formed.

[0014] More preferably, the pressing spring piece is a copper spring piece, and the pressing spring piece is electrically connected to the circuit on the copper foil layer.

[0015] The utility model has positive effects: the structure of the utility model is reasonably arranged, and a convex piece is arranged to cooperate with a splicing slot, and a pressing spring piece is arranged in the splicing slot, and cooperates with a splicing card and a conductive gold finger arranged on the splicing card, so that the splicing operation can be effectively and quickly realized, and the effectiveness of the splicing and the effectiveness of the electrical connection can be guaranteed by the pressing spring piece, and the splicing operation is convenient, and it is not necessary to weld the corresponding connector on the flexible circuit board, which is conducive to reducing costs, and is conducive to splicing assembly connection, and is stable and reliable to use, and has strong applicability and good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the content of the utility model easier to understand, the utility model is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein:

[0017] Figure 1 This is a schematic diagram of the structure of the utility model during splicing;

[0018] Figure 2 It is a schematic diagram of the specific structure of the utility model;

[0019] Figure 3 for Figure 1 Enlarged structural diagram at A in the middle.

[0020] Reference numerals: flexible circuit board body 1, polyimide matrix 11, isolation layer 12, copper foil layer 13, coating layer 14, convex piece 2, splicing slot 3, pressing spring piece 4, splicing card 5, conductive gold finger 6, rack 7, positioning convex strip 8. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example

[0023] See Figures 1 to 3 As shown, a splicable flexible circuit board includes a plurality of flexible circuit board bodies 1 with the same structure, a convex piece 2 is evenly fixed on one side of the flexible circuit board body, a splicing slot 3 with a side opening is arranged in the convex piece, and a pressing spring piece 4 is embedded and fixed on the top wall of the splicing slot; in this embodiment, the flexible circuit board body 1 includes a polyimide substrate 11, an isolation layer 12 arranged on the polyimide substrate through an adhesive layer, a copper foil layer 13 arranged on the isolation layer through an adhesive layer, and a coating layer 14 arranged on the copper foil layer through an adhesive layer; the pressing spring piece is a copper spring piece, and the pressing spring piece is electrically connected to the circuit on the copper foil layer. A splicing card 5 is arranged on one side of the flexible circuit board body, and the height of the splicing slot is not less than the thickness of the splicing card. The splicing card and the convex piece are arranged on different sides of the flexible circuit board body; in this embodiment, the convex piece and the splicing card are both polyimide sheets, and the polyimide substrate is integrally formed. It is formed in one piece, so there is no need for additional welding of connectors, and the flexibility of the flexible circuit board can be guaranteed, which is highly practical.

[0024] At the same time, in order to improve the effectiveness of the connection, the splicing card is provided with a conductive gold finger 6; when installing, the adjacent flexible circuit board bodies are spliced, the splicing card on one flexible circuit board is inserted into the splicing slot on the other flexible circuit board, and the pressing spring piece abuts against the conductive gold finger for electrical connection. The conductive gold finger cooperates with the pressing spring piece, which can not only ensure the stability of the connection, but also realize the electrical connection, and has strong practicality.

[0025] In actual application, a rack 7 inclined toward one side of the flexible circuit board body is provided on the inner wall of the splicing slot; a positioning convex strip 8 opposite to the rack is provided on the splicing card; during installation, the splicing card is inserted into the splicing slot, and the rack is clamped into the upper limit of the positioning convex strip. Through the above structure, the friction between the two can be increased, thereby preventing loosening or falling off, and improving the overall effectiveness and stability reliability.

[0026] The utility model has positive effects: the structure of the utility model is reasonably arranged, and a convex piece is arranged to cooperate with a splicing slot, and a pressing spring piece is arranged in the splicing slot, and cooperates with a splicing card and a conductive gold finger arranged on the splicing card, so that the splicing operation can be effectively and quickly realized, and the effectiveness of the splicing and the effectiveness of the electrical connection can be guaranteed by the pressing spring piece, and the splicing operation is convenient, and it is not necessary to weld the corresponding connector on the flexible circuit board, which is conducive to reducing costs, and is conducive to splicing assembly connection, and is stable and reliable to use, and has strong applicability and good practicality.

[0027] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification can also be directly processed according to existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0028] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the present invention still belong to the protection scope of the present invention.

Claims

1. A splicable flexible circuit board, comprising a plurality of flexible circuit board bodies with the same structure, characterized in that: A convex piece is evenly fixed on one side of the flexible circuit board body, a splicing slot with a side opening is arranged in the convex piece, and a pressing spring piece is embedded and fixed on the top wall of the splicing slot; A splicing card is arranged on one side of the flexible circuit board body, and the splicing card and the protruding piece are arranged on different sides of the flexible circuit board body; Conductive gold fingers are provided on the splicing card; Adjacent flexible circuit board bodies are spliced, a splicing card on one flexible circuit board is inserted into a splicing slot on another flexible circuit board, and the pressing spring piece abuts against the conductive gold finger for electrical connection.

2. The splicable flexible circuit board according to claim 1, characterized in that: A rack inclined toward one side of the flexible circuit board body is provided on the inner wall of the splicing slot; The splicing card is provided with a clamping convex strip in the opposite direction to the rack; The splicing card is inserted into the splicing slot, and the rack is snapped into the upper limit position of the snapping convex strip.

3. The splicable flexible circuit board according to claim 2, characterized in that: The height of the splicing slot is not less than the thickness of the splicing card.

4. The splicable flexible circuit board according to claim 3, characterized in that: The flexible circuit board body comprises a polyimide substrate, an isolation layer arranged on the polyimide substrate through a glue layer, a copper foil layer arranged on the isolation layer through a glue layer, and a coating layer arranged on the copper foil layer through a glue layer; The protruding piece and the splicing card are both polyimide sheets, and the polyimide matrix is ​​integrally formed.

5. The splicable flexible circuit board according to claim 4, characterized in that: The pressing spring piece is a copper spring piece, and the pressing spring piece is electrically connected to the circuit on the copper foil layer.

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