Integrated device

Abstract

The present invention relates to an integrated device, which includes a circuit board assembly. The circuit board assembly includes at least two circuit boards. A connector is provided between two adjacent circuit boards. The connector is used for electrically connecting the two adjacent circuit boards. Fixing members are provided on at least two opposite sides of the circuit board assembly. The fixing members are provided with grooves having openings facing the center of the circuit board assembly. The ends of the circuit board assembly are clamped in the grooves. The integrated device fixes the circuit boards and the connectors through the fixing members, can be disassembled and assembled repeatedly, is convenient for overhauling and replacing the circuit boards, and has a simple structure and convenient operation.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit boards, and particularly to an integrated device. Background Art

[0002] Circuit boards are widely used in the electronic field, and the connection between circuit boards is mainly completed through connectors. The connector plays an electrical connection and fixing role for the circuit board. At present, welding, conductive adhesive connection, etc. are widely used for the connection between circuit boards. Among them, welding has the characteristics of reliable connection, but it is not conducive to disassembly and assembly, and the quality requirements during welding are very high. Therefore, the production efficiency is low and the cost investment is high. Using conductive adhesive connection has the characteristics of easy operation, high efficiency, and low cost, but the conductive adhesive is greatly affected by external factors such as climate, aging, stress and strain, etc. Therefore, the connection of the circuit board is not stable enough. The circuit board connected by conductive adhesive is prone to problems such as circuit interruption or signal distortion.

[0003] In current conventional integrated devices, the structure between the connector and the circuit board is non-detachable, so it is not convenient to repair or replace it. Summary of the Invention

[0004] The purpose of the present invention is to provide an integrated device, so that the circuit board and the connector can be repeatedly disassembled and assembled, and the connection of the circuit board is stable.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] An integrated device provided includes a circuit board assembly, the circuit board assembly includes at least two circuit boards, a connector is arranged between adjacent two of the circuit boards, the connector is used for electrically connecting adjacent two of the circuit boards, at least opposite sides of the circuit board assembly are provided with fixing members, the fixing members are provided with grooves with openings facing the circuit board assembly, and ends of the circuit board assembly are inserted into the grooves.

[0007] Further, along the thickness direction of the circuit board, the circuit board and the connector are stacked.

[0008] Further, there are two fixing members, and the two fixing members are respectively inserted into opposite ends of the circuit board assembly.

[0009] Further, the groove is U-shaped, and two groove walls of the groove along the thickness direction of the circuit board assembly are respectively in contact with opposite two side surfaces of the circuit board assembly in the thickness direction.

[0010] Further, the bottom of the groove is in contact with the end face of the circuit board assembly.

[0011] Further, the groove is provided with an adhesive film layer, and the groove wall is bonded to the side surface of the circuit board assembly in the thickness direction through the adhesive film layer; and / or, the groove bottom is bonded to the end surface of the circuit board assembly through the adhesive film layer.

[0012] Further, the intersection between the groove wall of the groove and the first side surface of the open end of the fixing member is in an arc transition.

[0013] Further, a notch is provided at the intersection of the groove bottom and the groove wall of the groove.

[0014] Further, the fixing member is further provided with a buffer layer, and the buffer layer is arranged between the groove wall and the adhesive film layer.

[0015] Further, the adhesive film layer is a thermally conductive adhesive.

[0016] Further, a plurality of through holes are arranged at intervals on the second side surface of the fixing member away from the circuit board assembly, and the through holes penetrate through the second side surface and the groove bottom of the groove.

[0017] Further, the end of the circuit board is flush with the end of the connector, and the ends of the circuit board and the connector are both inserted into the groove.

[0018] Further, the groove is a cavity with one end open, and the end of the circuit board assembly is inserted into the cavity.

[0019] Advantages of the present invention compared with the prior art:

[0020] For the integrated device of the present invention, a connector is arranged between two adjacent circuit boards to form a circuit board assembly, and the circuit board and the connector are fixed by the fixing members on both sides of the circuit board assembly, and the plurality of circuit boards are electrically connected. It has the characteristics of simple structure, stable connection, being disassembled and assembled repeatedly, and easy to operate. Description of the Drawings

[0021] Figure 1 is a schematic diagram of the integrated device according to an embodiment of the present invention.

[0022] Figure 2 is a cross-sectional view of the integrated device according to an embodiment of the present invention.

[0023] Figure 3 is a side view of the fixing member according to an embodiment of the present invention.

[0024] Figure 4 is a cross-sectional view of the circuit board assembly according to an embodiment of the present invention.

[0025] In the figure:

[0026] 1. Circuit board; 10. Pad; 2. Connector; 20. Conductor; 21. Conductive medium; 3. Fixing member; 30. Through hole; 31. Notch; 32. Bottom of the groove; 33. Groove wall; 34. First side; 4. Adhesive film layer; 5. Buffer layer. Detailed implementation mode

[0027] To make the technical problems solved by the present invention, the technical solutions adopted, and the achieved technical effects clearer, the technical solutions of the present invention will be further described below with reference to the drawings and through specific implementation modes.

[0028] As Figure 1 and Figure 2 shown, an integrated device provided by the present invention includes a circuit board assembly. The circuit board assembly includes at least two circuit boards 1. A connector 2 is arranged between two adjacent circuit boards 1. The connector 2 is used to electrically connect two adjacent circuit boards 1. Fixing members 3 are arranged on at least two opposite sides of the circuit board assembly. The fixing member 3 is provided with a groove with an opening facing the circuit board assembly. The end of the circuit board assembly is inserted into the groove. It can be understood that the normal transmission of electrical signals is completed through the contact of the respective contact members between the circuit board 1 and the connector 2. Two adjacent circuit boards 1 are connected through the connector 2, so as to realize electrical connection between multiple circuit boards 1. The fixing member 3 is arranged at the end of the circuit board assembly. The fixing member 3 plays a fixing role, making the connection between the circuit board 1 and the connector 2 tight and preventing the separation of the contact members between the circuit board 1 and the connector 2. This integrated device has the characteristics of simple structure, stable connection, repeatable disassembly and assembly, and convenient operation.

[0029] In this embodiment, taking a circuit board assembly composed of two circuit boards 1 and one connector 2 as an example, along the thickness direction of the circuit board 1, the circuit board 1 and the connector 2 are stacked. It can be understood that stacking the circuit board 1 and the connector 2 occupies less space, has a more compact structure, and is convenient for arranging the contact members for electrical connection between the circuit board 1 and the connector 2.

[0030] Specifically, there are two fixing members 3, and the two fixing members 3 are respectively inserted into the opposite ends of the circuit board assembly. In this embodiment, the two circuit boards 1 are respectively connected to the connector 2 through their respective contact members to realize the electrical path between the two circuit boards 1. The two fixing members 3 are respectively inserted into the ends of the circuit board assembly in the length direction to fix the two circuit boards 1 and the connector 2. Preferably, the fixing member 3 is arranged on the center line in the width direction of the circuit board assembly.

[0031] In another embodiment, there are four fixing members 3, and the four fixing members 3 are respectively inserted into the four corners of the circuit board assembly. It can be understood that arranging the fixing members 3 at the four corners can prevent the surface of the circuit board 1 from being unevenly stressed and causing the separation of the circuit board 1 and the connector 2, further improving the connection stability between the circuit board 1 and the connector 2.

[0032] Specifically, referring to Figure 2 and Figure 3 As shown, the groove is U-shaped, and the two groove walls 33 of the groove in the thickness direction of the circuit board assembly are respectively abutted against the two opposite sides of the circuit board assembly in the thickness direction. In this embodiment, the two circuit boards 1 are respectively located on the upper and lower sides of the connector 2, and the ends of the two circuit boards 1 and the connector 2 are inserted into the groove, and the upper and lower groove walls 33 of the groove are respectively abutted against the sides of the two circuit boards 1 away from the connector 2.

[0033] Specifically, the bottom 32 of the groove is abutted against the end face of the circuit board assembly. It can be understood that to achieve electrical connection between the circuit board 1 and the connector 2, the contact parts of the two need to remain in contact. The end face of the circuit board assembly is abutted against the bottom 32 of the groove, which limits the length direction of the circuit board assembly and avoids the displacement of the circuit board 1 and the connector 2 along the length direction of the circuit board assembly, resulting in the disconnection of the contact parts between the two. By abutting the end face of the circuit board assembly against the bottom 32 of the groove, the connection stability between the circuit board 1 and the connector 2 is further improved.

[0034] In another embodiment, the groove is a cavity with one end open, and the end of the circuit board assembly is inserted into the cavity. In this embodiment, along the thickness direction and width direction of the circuit board assembly, the four side faces of the end of the circuit board assembly are inserted into the groove, which can limit the separation of the circuit board 1 and the connector 2 and the sliding of the circuit board 1 and the connector 2 along the width direction.

[0035] As a preferred solution, the end of the circuit board 1 is flush with the end of the connector 2, and the ends of the circuit board 1 and the connector 2 are both inserted into the groove. It can be understood that the ends of the circuit board 1 and the connector 2 are flush and inserted into the groove at the same time, so that the end positions of the two circuit boards 1 can be supported by the connector 2, avoiding deformation of the circuit board 1 due to the extrusion force of the fixing member 3 on the circuit board 1 towards the connector 2 when the circuit board assembly is inserted into the groove.

[0036] Specifically, the groove is provided with an adhesive film layer 4, and the groove wall 33 is bonded to the side face of the circuit board assembly in the thickness direction through the adhesive film layer 4; and / or, the bottom 32 of the groove is bonded to the end face of the circuit board assembly through the adhesive film layer 4. It can be understood that setting the adhesive film layer 4 on the contact surface between the groove and the circuit board assembly to bond the two can avoid relative sliding or loosening of the contact surface between the two due to vibration or environmental temperature influence, thereby improving the connection stability and seismic resistance of the two.

[0037] Specifically, the adhesive film layer 4 is a thermal conductive adhesive. It can be understood that the thermal conductive adhesive is a silicone rubber mixed and kneaded with organosilicon rubber as the main body, adding fillers, thermal conductive materials and other polymer materials. The thermal conductive adhesive has good thermal conductivity and insulation performance. Setting the thermal conductive adhesive can, on the one hand, conduct the heat generated by the circuit board assembly to the fixing member 3 to prevent heat from accumulating in the groove of the fixing member 3 and causing the temperature of the circuit board assembly to rise; on the other hand, it can insulate and connect the circuit board 1 and the fixing member 3 to prevent short circuit problems.

[0038] Specifically, referring to Figure 3 As shown, the intersection of the groove wall 33 and the first side surface 34 of the open end of the fixing member 3 has an arc transition. It can be understood that there is an arc transition between the groove wall 33 and the first side surface 34 of the open end of the fixing member 3. When the circuit board assembly is inserted into the groove, the edge of the open end can be prevented from damaging the circuit board 1. At the same time, the arc transition can make the end of the open end of the groove of the fixing member 3 be in a trumpet shape, which is convenient for the circuit board assembly to be inserted.

[0039] Specifically, a notch 31 is provided at the intersection of the groove bottom 32 and the groove wall 33 of the groove. In this embodiment, the notch 31 is a circular through hole, and the axis of the circular through hole is parallel to the intersection line of the groove bottom 32 and the groove wall 33. The circular through hole communicates with the groove to form the notch 31. Setting the notch 31 can promote the end face and side face of the circuit board assembly to fit with the groove bottom 32 and the groove wall 33 of the groove respectively. At the same time, the heat accumulated inside the groove can also be discharged through the notch 31, playing a role in ventilation and cooling. In other embodiments, the notch 31 can also be formed by a square hole communicating with the groove.

[0040] Specifically, the fixing member 3 is further provided with a buffer layer 5, and the buffer layer 5 is arranged between the groove wall 33 and the adhesive film layer 4. In this embodiment, the buffer layer 5 is a rubber film with good elasticity. After the circuit board assembly is inserted into the groove, the buffer layer 5 is squeezed and deformed, and an elastic force is generated and applied to the surface of the circuit board assembly, improving the stability of the insertion of the circuit board assembly into the groove. At the same time, the buffer layer 5 is made of rubber material, which can prevent the fixing member 3 from wearing the circuit board assembly and play a protective role for the circuit board assembly.

[0041] Specifically, a plurality of through holes 30 are spaced apart on the second side surface of the fixing member 3 away from the circuit board assembly, and the through holes 30 penetrate the second side surface and communicate with the groove bottom 32 of the groove. It can be understood that the circuit board 1 generates heat during operation, and the heat generated at the end of the circuit board assembly accumulates in the groove, which will cause the temperature of the circuit board assembly to rise and is not conducive to the normal operation of the circuit board assembly. Setting a plurality of through holes 30 can lead the heat inside the groove out through the through holes 30, playing a role in ventilation and heat dissipation.

[0042] Specifically, as Figure 4As shown in the figure, the contact of the circuit board 1 is the pad 10, and the contact of the connector 2 is the conductor 20. The pad 10 is provided on one side of the circuit board 1 close to the connector 2, and the pad 10 is connected to the circuit on the circuit board 1. The conductors 20 are provided on both sides of the connector 2, and the conductors 20 are arranged corresponding to the pads 10. The conductors 20 on both sides of the connector 2 are connected by a conductive medium 21. During assembly, two circuit boards 1 are located on both sides of the connector 2, and the pads 10 on each circuit board 1 are abutted against the corresponding conductors 20 to achieve electrical connection, thereby achieving electrical connection between the two circuit boards 1.

[0043] Specifically, the connector 2 has a body, and a connection hole penetrating through the upper and lower sides is provided on the body. The conductors 20 are respectively arranged at both ends of the connection hole, and the conductive medium 21 is arranged in the connection hole and is respectively connected to the conductors at both ends. The conductive medium 21 is preferably copper, and of course, other materials with good electrical conductivity can also be selected, such as tin, silver, gold, graphite, copper paste, silver paste, solder paste, carbon nanotubes, etc.

[0044] Specifically, the material of the body in the embodiment of the present invention is one or a combination of polyimide, thermoplastic polyimide, modified epoxy resin, modified acrylic resin, polyethylene terephthalate, polybutylene terephthalate, polyethylene, polyethylene naphthalate, polystyrene, polyvinyl chloride, polysulfone, polyphenylene sulfide, polyether ether ketone, polyphenylene ether, polytetrafluoroethylene, liquid crystal polymer, polyoxalyl urea. Specifically, the body can be a single component, that is, one of the above various insulating materials, or can be composed of any combination of the above insulating materials.

[0045] The remarkable effect of this embodiment is that the integrated device forms a circuit board assembly by providing a connector 2 between two adjacent circuit boards 1, and fixes the ends of the circuit board assembly through a fixing member 3 provided with a groove, so as to achieve the purpose of electrical connection between multiple circuit boards 1. It has the characteristics of simple structure, stable connection, being disassembled and assembled repeatedly, and being easy to operate.

[0046] The above content is only a preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. An integrated device, characterized in that, it includes a circuit board assembly, the circuit board assembly at least includes two circuit boards (1), a connector (2) is arranged between two adjacent circuit boards (1), the connector (2) is used for electrically connecting two adjacent circuit boards (1), fixing members (3) are arranged on at least two opposite sides of the circuit board assembly, the fixing members (3) are provided with grooves with openings facing the circuit board assembly, and ends of the circuit board assembly are inserted into the grooves; the groove is U-shaped, and two groove walls (33) of the groove in the thickness direction of the circuit board assembly are respectively abutted against two opposite side surfaces in the thickness direction of the circuit board assembly; a notch (31) is provided at the intersection of the groove bottom (32) and the groove wall (33) of the groove; along the thickness direction of the circuit board (1), the circuit board (1) and the connector (2) are stacked; a plurality of through holes (30) are spacedly arranged on a second side surface of the fixing member (3) away from the circuit board assembly, and the through holes (30) penetrate through the second side surface and the groove bottom (32) of the groove.

2. The integrated device according to claim 1, characterized in that, there are two fixing members (3), and the two fixing members (3) are respectively inserted into opposite ends of the circuit board assembly.

3. The integrated device according to claim 1, characterized in that, the groove bottom (32) of the groove abuts against the end surface of the circuit board assembly.

4. The integrated device according to claim 3, characterized in that, the groove is provided with an adhesive film layer (4), and the groove wall (33) and the side surface in the thickness direction of the circuit board assembly are bonded through the adhesive film layer (4); and / or, the groove bottom (32) and the end surface of the circuit board assembly are bonded through the adhesive film layer (4).

5. The integrated device according to claim 1, characterized in that, the intersection between the groove wall (33) of the groove and the first side surface (34) at the open end of the fixing member (3) is in arc transition.

6. The integrated device according to claim 4, characterized in that, the fixing member (3) is further provided with a buffer layer (5), and the buffer layer (5) is arranged between the groove wall (33) and the adhesive film layer (4).

7. The integrated device according to claim 4, characterized in that, the adhesive film layer (4) is a thermal conductive adhesive.

8. The integrated device according to claim 1, characterized in that, the end of the circuit board (1) is flush with the end of the connector (2), and the ends of the circuit board (1) and the connector (2) are both inserted into the groove.

9. The integrated device according to claim 2, characterized in that, the groove is a cavity with one end open, and the end of the circuit board assembly is inserted into the cavity.

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