Composite flexible circuit board

Abstract

The utility model discloses a composite flexible circuit board in the technical field of circuit boards, which comprises a circuit board, one end of the circuit board is provided with a connecting line, the circuit board comprises a panel and a back plate, the panel and the back plate are arranged in a forward and reverse U-shaped structure, the periphery of the panel and the periphery of the back plate are mutually fixed and wrapped to form a whole, and the connecting line is arranged on the connecting line. The inner wall of the panel is fixedly connected with a protection framework, the bottom of the protection framework is provided with a mounting inner cavity, the bottom of the mounting inner cavity is fixedly connected with a substrate, and the bottom of the substrate is coated with an insulating protection layer. According to the circuit board, the panel and the back plate are arranged in the forward and reverse U-shaped structure and are mutually fixed and coated to form a whole, so that the structural strength of the circuit board is enhanced, internal circuits and connection parts can be better protected when the circuit board is impacted by the outside, and the connection stability and durability are improved. The bottom of the substrate is coated with the insulation protection layer, so that short circuit and electromagnetic interference between circuits are effectively prevented, and the insulation performance and the electromagnetic compatibility of the circuit board are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of circuit board, specifically is composite flexible circuit board. BACKGROUND

[0002] Circuit board is also called circuit board, FPC circuit board (FPC circuit board is also called flexible circuit board flexible circuit board is with polyimide or polyester film as base material and is made of a kind of highly reliable, excellent flexible printed circuit board.) And rigid-flex board, the birth and development of FPC and PCB have spawned rigid-flex board, a new product.Therefore, rigid-flex board is that flexible circuit board and rigid circuit board are combined together by pressing and other processes according to relevant process requirements, to form a circuit board with the characteristics of FPC and PCB.

[0003] In the existing electronic industry, flexible circuit board is widely used in various electronic devices due to its bendable, light and thin, easy to integrate characteristics.However, traditional flexible circuit board still has some deficiencies in structure design and performance.For example, the connection stability and durability of traditional flexible circuit board need to be improved, especially in complex electronic systems, due to the interference of various external factors, the circuit board is easy to be damaged, thereby affecting the stability and reliability of the whole system.In addition, due to the limitation of process, it is difficult to realize efficient and low-cost production in the manufacturing process of traditional flexible circuit board.Therefore, it is necessary to provide a new type of composite flexible circuit board to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing composite flexible circuit board to solve the problems raised in the above background.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: composite flexible circuit board, including circuit board, the one end of circuit board is provided with connecting wire, the circuit board includes a panel and a backboard, the panel and backboard are set as positive and negative U-shaped structure, the four around panel and backboard are mutually fixed and covered to form a whole, the inner wall of panel is fixedly connected with protection framework, the bottom of protection framework is provided with installation inner cavity, the bottom of installation inner cavity is fixedly connected with base plate, the bottom of base plate is covered with insulating protective layer.

[0006] As a further scheme of the utility model: the top of the one end of circuit board close to connecting wire is provided with external connection groove, the external connection groove is provided as penetrating towards the top, the bottom end inner wall of external connection groove is extended to base plate.

[0007] As a further scheme of the utility model: a plurality of external connection through holes are uniformly provided in the one end of base plate close to connecting wire.

[0008] As a further scheme of the utility model: the one end of the connecting line close to the circuit board is through fixed connection with the one end of the base plate position matching.

[0009] As a further scheme of the utility model: the one end of the connecting line far from the circuit board is fixedly connected with the connecting block, and the one end of the connecting block far from the connecting line is fixedly connected with the row plug.

[0010] As a further scheme of the utility model: the input end of the row plug is connected with the output end of the connecting line.

[0011] Compared with the prior art, the utility model has the beneficial effects that: in the utility model, the panel and the back plate are arranged in positive and reverse U-shaped structures and are fixedly covered to form a whole, the structural strength of the circuit board is enhanced, the internal circuit and the connecting part of the circuit board can be better protected when the circuit board is impacted by the outside, and therefore the connection stability and durability are improved. The insulating protective layer is covered at the bottom of the base plate, short circuit and electromagnetic interference between circuits are effectively prevented, and the insulating performance and electromagnetic compatibility of the circuit board are improved. The connecting line is arranged at one end of the circuit board, the connecting block and the row plug are arranged on the connecting line, the circuit board can be conveniently connected and integrated with other electronic elements, and the flexibility and expandability of the system are improved. The manufacturing process is simplified, the manufacturing cost is reduced, the composite flexible circuit board is more competitive in price through the optimization of the structural design. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a schematic view of the front structure of the composite flexible circuit board of the utility model;

[0013] Figure 2 It is a schematic view of the sectional structure of the circuit board in the composite flexible circuit board of the utility model;

[0014] Figure 3 It is a schematic view of the front structure of the composite flexible circuit board of the utility model; Figure 2 It is an enlarged schematic view of the structure at A in the composite flexible circuit board of the utility model.

[0015] In the drawing: 1, circuit board; 11, panel; 12, protection framework; 13, installation inner cavity; 14, base plate; 15, insulating protective layer; 16, back plate; 2, external connection groove; 21, external connection through hole; 3, connecting line; 31, connecting block; 32, row plug. DETAILED DESCRIPTION

[0016] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of the present application.

[0017] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally a class, not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0018] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0019] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "setting" should be understood broadly, for example, it can be fixedly connected, set, or detachably connected, set, or integrally connected, set. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0020] Please refer to Figures 1 to 3 In the embodiment of the present application, a composite flexible circuit board comprises a circuit board 1, and the circuit board 1 is provided with a connecting line 3 at one end. The circuit board 1 comprises a panel 11 and a back plate 16, and the panel 11 and the back plate 16 are arranged in a positive and negative U-shaped structure, and the panel 11 and the back plate 16 are fixedly covered around each other to form a whole. The inner wall of the panel 11 is fixedly connected with a protection framework 12, the bottom of the protection framework 12 is provided with a mounting inner cavity 13, the bottom of the mounting inner cavity 13 is fixedly connected with a substrate 14, and the bottom of the substrate 14 is covered with an insulating protective layer 15.

[0021] An external slot 2 is formed on the top of the circuit board 1 near one end of the connecting line 3, the external slot 2 is formed penetratingly towards the top, and the substrate 14 extends to the inner wall of the bottom end of the external slot 2. A plurality of external through holes 21 are uniformly formed penetratingly on the substrate 14 at one end of the connecting line 3, so as to facilitate the connection of the connecting line 3 and the circuit on the substrate 14.

[0022] The one end of the connecting line 3 near the circuit board 1 is fixedly connected with the one end of the substrate 14 matching in position, so as to ensure the stable and reliable connection between the connecting line 3 and the circuit board 1. The one end of the connecting line 3 away from the circuit board 1 is fixedly connected with a connecting block 31, and the one end of the connecting block 31 away from the connecting line 3 is fixedly connected with a row of plugs 32, and the input end of the row of plugs 32 is connected with the output end of the connecting line 3. In this way, the composite flexible circuit board can be conveniently connected and integrated with other electronic elements through the row of plugs 32.

[0023] The insulating protective layer 15 is made of soft insulating material, such as silica gel material, polyethylene material, etc.

[0024] Meanwhile, the substrate 14 is also embedded with a conductive circuit, which is made of ultra-thin copper plate and has plasticity.

[0025] In the specific manufacturing process, the following steps can be followed:

[0026] Prepare the materials such as the panel 11, the back plate 16, the protective framework 12, the substrate 14 and the insulating protective layer 15.

[0027] The panel 11 and the back plate 16 are arranged in a positive and negative U-shaped structure, and they are fixedly covered around each other to form a whole.

[0028] The protective framework 12 is fixedly connected to the inner wall of the panel 11, and the mounting inner cavity 13 is formed on the bottom of the protective framework 12.

[0029] The substrate 14 is fixedly connected to the bottom of the mounting inner cavity 13, and the insulating protective layer 15 is covered on the bottom of the substrate 14.

[0030] The external slot 2 is formed on the top of the circuit board 1 near one end of the connecting line 3, and the substrate 14 extends to the inner wall of the bottom end of the external slot 2.

[0031] A plurality of external through holes 21 are uniformly formed penetratingly on the substrate 14 at one end of the connecting line 3.

[0032] The one end of the connecting line 3 near the circuit board 1 is fixedly connected with the one end of the substrate 14 matching in position.

[0033] The connecting block 31 is fixedly connected to the one end of the connecting line 3 away from the circuit board 1, and the row of plugs 32 is fixedly connected to the one end of the connecting block 31 away from the connecting line 3.

[0034] Through the above steps, a composite flexible circuit board with stable structure, reliable connection, good insulation performance and easy connection can be manufactured. The circuit board can be widely applied in various electronic devices, improving the stability and reliability of the system.

[0035] It should be noted that in this document, the terms "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the statement "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element. In addition, it should be pointed out that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted, or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0036] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above specific embodiments, and the above specific embodiments are only illustrative, not limiting, and those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims.

Claims

1. A composite flexible circuit board, comprising a circuit board (1), characterized in that: One end of the circuit board (1) is provided with a connecting line (3). The circuit board (1) includes a front panel (11) and a back panel (16). The front panel (11) and the back panel (16) are arranged in a U-shaped structure with opposite directions. The front panel (11) and the back panel (16) are fixedly covered by each other to form a whole. A protective frame (12) is fixedly connected to the inner wall of the front panel (11). An installation cavity (13) is opened at the bottom of the protective frame (12). A substrate (14) is fixedly connected to the bottom of the installation cavity (13). An insulating protective layer (15) is covered at the bottom of the substrate (14).

2. The composite flexible circuit board according to claim 1, characterized in that: The circuit board (1) has an external groove (2) at the top near the end of the connecting line (3). The external groove (2) is opened through the top, and the substrate (14) extends to the bottom inner wall of the external groove (2).

3. The composite flexible circuit board according to claim 1, characterized in that: The substrate (14) has a plurality of external vias (21) uniformly extending through one end of the connecting line (3).

4. The composite flexible circuit board according to claim 1, characterized in that: The end of the connecting line (3) near the circuit board (1) is fixedly connected to the end of the substrate (14) at the same position.

5. The composite flexible circuit board according to claim 1, characterized in that: The end of the connecting line (3) away from the circuit board (1) is fixedly connected to a connecting block (31), and the end of the connecting block (31) away from the connecting line (3) is fixedly connected to a power strip (32).

6. The composite flexible circuit board according to claim 5, characterized in that: The input end of the power strip (32) is connected to the output end of the connecting line (3).

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