Printed circuit board

Abstract

The utility model belongs to the technical field of circuit boards, and particularly relates to a printed circuit board. The printed circuit board provided by the utility model comprises two circuit boards with the same size, the two circuit boards are stacked up and down, the two sides of the middle of the two circuit boards are provided with cushion blocks, the two circuit boards are located at the outer sides of the cushion blocks and are buckled and fixed through fixing frames of a [-shaped structure, and the fixing frames at the two sides are fixed through a hoop. A plurality of connecting seats are arranged on the outer side of the fixing frame; heat dissipation plates are arranged on the two sides, perpendicular to the fixing frame, of the two circuit boards, a plurality of heat conduction rods are arranged on the heat dissipation plates on the two sides and located between the two circuit boards, the portions, located outside the heat conduction rods, of the two circuit boards are filled with heat conduction glue, and a plurality of positioning grooves are formed in the portions, close to the heat dissipation plates, of the two circuit boards. And positioning blocks matched with the positioning grooves are arranged on the inner side of the heat dissipation plate.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit boards, and particularly relates to a printed circuit board. Background Art

[0002] A printed circuit board, also known as a printed wiring board, is a provider of electrical connections for electronic components. Its development has a history of more than 100 years; its design is mainly layout design; the main advantages of using a circuit board are greatly reducing wiring and assembly errors, improving the automation level and production labor rate. The design of a printed circuit board is based on a circuit schematic diagram to achieve the functions required by circuit designers.

[0003] In the process of using existing circuit boards, in order to make the functions more complete and more miniaturized, most of them adopt the scheme of multi-layer printed circuit boards for production. However, when existing multi-layer printed circuit boards are used, the fixed positions between the two circuit boards cannot be adjusted well, so that the two boards will be misaligned during the installation process, which will affect the quality of the multi-layer printed circuit board. In addition, if the multi-layer circuit board is affected by external forces, the circuit board is prone to bending and breaking, affecting the service life of the circuit board. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is that existing multi-layer printed circuit boards are not easy to align and fix positions during production, and are prone to bending and breaking under the influence of external forces, affecting the service life of the circuit board.

[0005] To solve the above technical problems, the technical solution provided by the utility model is: a printed circuit board, including two circuit boards of the same size, the two circuit boards are stacked up and down, pads are arranged on both sides between the two circuit boards, and the two circuit boards are buckled and fixed by fixing frames in a "C" shape outside the pads, and the two fixing frames on both sides are fixed by a clamp. A plurality of connecting seats are arranged on the outer side of the fixing frame; heat dissipation plates are arranged on both sides perpendicular to the fixing frame of the two circuit boards, a plurality of heat conducting rods are arranged between the two heat dissipation plates and between the two circuit boards, and heat conducting glue is filled outside the plurality of heat conducting rods of the two circuit boards. A plurality of positioning grooves are arranged on the two circuit boards near the heat dissipation plates, and positioning blocks matching the positioning grooves are arranged on the inner sides of the heat dissipation plates.

[0006] As an improvement, the width of the fixing frame is the same as that of the two circuit boards, and rubber pads are arranged on the surfaces of the inner sides of the fixing frame in contact with the two circuit boards.

[0007] As an improvement, corresponding card slots are arranged on the fixing frame at the position of the clamp.

[0008] As an improvement, the clamp is located on one side of the plurality of connecting seats close to the edge.

[0009] As an improvement, mounting holes are provided on the plurality of connecting seats, and the lower end surfaces of the plurality of connecting seats are in the same plane as the lower end surface of the fixing frame.

[0010] As an improvement, the inner side of the heat dissipation plate abuts against the side surfaces of the fixing frame and the two circuit boards, and the four corners of the heat dissipation plate are fixedly connected to the fixing frame by screws.

[0011] As an improvement, the height of the heat dissipation plate at the two circuit boards is greater than the thickness after the two circuit boards are stacked.

[0012] As an improvement, the plurality of heat conduction rods and the heat dissipation plates connected to both sides are of an integral structure and are both made of aluminum alloy.

[0013] The advantages of the present utility model compared with the prior art are as follows:

[0014] 1. By providing a plurality of positioning grooves on both sides, this printed circuit board is used to align with the positioning blocks on the heat dissipation plate, preventing misalignment between the circuit boards. And through the heat dissipation plate and the fixing frames on both sides, the edges of the heat dissipation plate can be protected, thereby preventing the circuit board from being bent or broken by external forces.

[0015] 2. By using the heat dissipation plate to enclose and protect the side surfaces of the circuit boards, the heat dissipation of the internal electronic components, etc. is conducted through the filled thermal conductive adhesive and the plurality of heat conduction rods, thereby dissipating heat from the part between the two circuit boards and enabling the circuit board to be used normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the structure of a printed circuit board of the present utility model Figure 1 .

[0017] Figure 2 is the structure of a printed circuit board of the present utility model Figure 2 .

[0018] Figure 3 is the exploded structure diagram of a printed circuit board of the present utility model.

[0019] Figure 4 is the sectional three-dimensional structure diagram of a printed circuit board of the present utility model.

[0020] As shown in the figure: 1. Two circuit boards; 2. Spacers; 3. Fixing frame; 4. Clamp; 5. A plurality of connecting seats; 6. Heat dissipation plate; 7. A plurality of heat conduction rods; 8. Thermal conductive adhesive; 9. Positioning groove; 10. Positioning block; 11. Rubber pad; 12. Card slot; 13. Mounting hole; 14. Screw DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] In the description of the utility model, it should be noted that unless otherwise clearly defined and limited, terms such as "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0023] Embodiment 1:

[0024] As shown in the attached Figures 1-4 description, a printed circuit board includes two circuit boards 1 of the same size, which are stacked up and down. On both sides between the two circuit boards 1, there are cushion blocks 2, and the two circuit boards 1 are buckled and fixed by a fixing frame 3 in the shape of a "C" outside the cushion blocks 2. The fixing frame 3 has the same width as the two circuit boards 1. On the inner side of the fixing frame 3, rubber pads 11 are provided on the surfaces in contact with the two circuit boards 1. The two fixing frames 3 are fixed by a clamp 4. Corresponding card slots 12 are provided on the fixing frame 3 at the position of the clamp 4. A plurality of connection seats 5 are provided on the outer side of the fixing frame 3. The clamp 4 is located on one side close to the edge of the plurality of connection seats 5. Mounting holes 13 are provided on the plurality of connection seats 5, and the lower end surfaces of the plurality of connection seats 5 are in the same plane as the lower end surface of the fixing frame 3;

[0025] In the present utility model, heat dissipation plates 6 are provided on both sides of the two circuit boards 1 perpendicular to the fixing frame 3. The inner side of the heat dissipation plate 6 abuts against the fixing frame 3 and the sides of the two circuit boards 1, and the four corners of the heat dissipation plate 6 are fixedly connected to the fixing frame 3 by screws 14. The height of the heat dissipation plate 6 at the position of the two circuit boards 1 is greater than the thickness after the two circuit boards 1 are stacked. A plurality of heat conduction rods 7 are provided between the two heat dissipation plates 6 located at the two circuit boards 1, and heat conduction glue 8 is filled outside the two circuit boards 1 at the position of the plurality of heat conduction rods 7. The plurality of heat conduction rods 7 and the heat dissipation plates 6 connected on both sides are of an integral structure and are all made of aluminum alloy. A plurality of positioning grooves 9 are provided on the two circuit boards 1 close to the heat dissipation plates 6, and positioning blocks 10 matching the positioning grooves 9 are provided on the inner side of the heat dissipation plates 6.

[0026] In the specific implementation of the present utility model, two circuit boards 1 are respectively inserted into the positioning blocks 10 inside the heat dissipation plate 6 through the positioning grooves 9 and placed on the upper and lower sides of a plurality of heat conduction rods 7. Then, the spacer block 2 is placed in the middle on one side of the two circuit boards 1 to determine the position in the middle of the two circuit boards 1. Then, the fixing frame 3 is inserted to fix one end. Then, the heat dissipation plate 6 on this side is fixed to the fixing frame 3 through the screw 14. The heat conduction glue 8 is poured into the middle of the two circuit boards 1. Then, the spacer block 2 is placed between the two circuit boards 1 from the other side and fixed to the circuit board and the heat dissipation plate 6 on the other side through the fixing frame 3 to complete the installation. Then, the fixing frames 3 on both sides of the circuit board are assisted to be fixed through the clamp 4, and the present utility model is installed and fixed through the mounting holes 13 of a plurality of connecting seats 5.

[0027] The above description of the present utility model and its implementation manners is not restrictive. What is shown in the specific implementation manners is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative work without departing from the gist of the creation of the present utility model, they shall fall within the protection scope of the present utility model.

Claims

1. A printed circuit board includes two circuit boards of the same size, and the two circuit boards are stacked up and down. It is characterized in that: There are cushion blocks arranged on both sides between the two circuit boards, and the two circuit boards are buckled and fixed by a fixing frame in a "C" shape outside the cushion blocks, and are fixed by a clamp between the two fixing frames on both sides. A plurality of connecting seats are arranged on the outside of the fixing frame; Radiating plates are arranged on both sides perpendicular to the fixing frame of the two circuit boards. A plurality of heat conducting rods are arranged between the two radiating plates and between the two circuit boards. And heat conducting glue is filled outside the plurality of heat conducting rods of the two circuit boards. A plurality of positioning grooves are arranged on the two circuit boards near the radiating plates, and positioning blocks matching the positioning grooves are arranged on the inner sides of the radiating plates.

2. A printed circuit board according to claim 1, characterized in that: The fixing frame has the same width as the two circuit boards, and rubber pads are arranged on the surfaces of the inner sides of the fixing frame in contact with the two circuit boards.

3. A printed circuit board according to claim 1, characterized in that: Corresponding card slots are arranged on the fixing frame at the position of the clamp.

4. A printed circuit board according to claim 1, characterized in that: The clamp is located on one side of the plurality of connecting seats close to the edge.

5. A printed circuit board according to claim 1, characterized in that: Mounting holes are arranged on the plurality of connecting seats, and the lower end surfaces of the plurality of connecting seats are on the same plane as the lower end surface of the fixing frame.

6. A printed circuit board according to claim 1, wherein: The inner side of the radiating plate abuts against the side surfaces of the fixing frame and the two circuit boards, and the four corners of the radiating plate are fixedly connected to the fixing frame by screws.

7. A printed circuit board according to claim 1, characterized in that: The height of the radiating plate at the position of the two circuit boards is greater than the thickness after the two circuit boards are stacked.

8. A printed circuit board according to claim 1, wherein: The plurality of heat conducting rods and the radiating plates connected to both sides are of an integral structure and are all made of aluminum alloy.

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