Multilayer circuit board

Abstract

The utility model belongs to the technical field of circuit boards, and particularly relates to a multilayer circuit board which comprises a pair of circuit board bodies which are arranged in a mirror image mode, a plurality of connecting plugs are arranged on the circuit board bodies, and protruding faces of the connecting plugs are flush. The cooling assembly is arranged between the circuit board bodies, and the heat conducting surface of the cooling assembly is attached to the convex surface of the connecting plug so as to dissipate heat of the connecting plug; in brief, the at least two layers of circuit board bodies are oppositely arranged, the cooling assembly is arranged in the circuit board bodies, and the convex surface of the connecting plug is close to the heat conducting surface of the cooling assembly, so that the heat of the connecting plug is dissipated, and the service life of the circuit board bodies is prolonged.

Description

Technical Field

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

[0002] The circuit board is one of the important components of the electronic industry, which can provide mechanical support for fixing and assembling electronic components and realize electrical connection between electronic components. When the existing circuit board is in use, various wire harnesses are inserted into the plug connectors, and the temperature at the plug connectors is relatively high. On the double-layer circuit board, heat accumulation is particularly serious, which easily leads to a decrease in the service life of the circuit board.

[0003] Therefore, how to avoid the deterioration of the circuit board stability caused by heat accumulation between the plug connectors arranged oppositely on the multi-layer circuit board is a technical problem that needs to be solved urgently in this field. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a multi-layer circuit board.

[0005] In order to solve the above technical problems, the utility model provides a multi-layer circuit board, including: at least two circuit board bodies, the plug connectors of adjacent circuit board bodies are arranged oppositely, and the convex surfaces of each plug connector are approximately flush; at least one cooling component, which is arranged between the two circuit board bodies, so that the heat conduction surface of the cooling component is suitable for transferring the heat of the convex surface of the plug connector to dissipate heat.

[0006] Preferably, the cooling component includes a cooling box and a cover plate; one end of the cooling box is provided with an opening, the cover plate is covered on the opening end of the cooling box, and a plurality of liquid through holes are arranged on the side wall of the cooling box, so that a cooling medium circulates in the cooling box.

[0007] Preferably, a sealing groove is arranged at the opening end of the cooling box, a sealing strip is arranged in the sealing groove, and the cover plate presses the sealing strip to seal the cooling box.

[0008] Preferably, a plurality of connecting columns are arranged in the cooling box, connecting holes are formed on the cover plate, the connecting holes and the connecting columns are connected by bolts, and a sealing member is arranged at the joint of the connecting column and the connecting hole.

[0009] Preferably, a plurality of positioning cavities are arranged on the surfaces of the cooling box and the cover plate, and the plug connector is suitable for being clamped in the positioning cavity to limit the cooling box and the cover plate.

[0010] Preferably, the circuit board bodies are connected by connecting pins, the cooling box and the cover plate are provided with a plurality of avoiding openings, and the connecting pins are arranged in the avoiding openings.

[0011] Preferably, a plurality of through holes are formed in the circuit board body, the connecting pins are inserted into the through holes, and both ends of the connecting pins extend out of the through holes, and connecting heads are arranged at the extending ends of the connecting pins.

[0012] Preferably, the connecting head includes a plurality of connecting pieces arranged in an array of petals, an annular clamping block is arranged on the side wall of the connecting piece, the cross section of the clamping block is a right triangle, and the side wall of the clamping block always presses against the surface of the circuit board body to fasten the two circuit board bodies.

[0013] The beneficial effects of the present utility model are as follows:

[0014] At least two circuit board bodies are arranged opposite to each other, and a cooling component is arranged therein. The convex surface of the plug connector is close to the heat conducting surface of the cooling component to dissipate heat from the plug connector, thereby improving the service life of the circuit board body.

[0015] Other features and advantages of the present utility model will be described in the following specification, and, in part, will be obvious from the specification, or will be understood by implementing the present utility model.

[0016] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following specific preferred embodiments are given, and in conjunction with the accompanying drawings, the detailed description is as follows. Description of the Drawings

[0017] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a perspective view of a preferred embodiment of the multi-layer circuit board of the present utility model;

[0019] Figure 2 is a perspective view of a preferred embodiment of the multi-layer circuit board of the present utility model;

[0020] Figure 3 is a perspective view of a preferred embodiment of the cooling box of the present utility model.

[0021] In the figure:

[0022] 1. Circuit board body; 11. Plug connector; 12. Connecting pin; 12a. Connecting head; 12b. Connecting piece; 12c. Clamping block;

[0023] 2. Cooling assembly; 21. Cooling box; 21a. Liquid passage port; 21b. Sealing groove; 21c. Connecting post; 22. Cover plate; 22a. Connecting hole; 23. Positioning cavity; 24. Avoidance port. Detailed implementation manners

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0025] As Figures 1 to 3 shown, at least one embodiment provides a multi-layer circuit board, including: at least two circuit board bodies 1, the plug connectors of adjacent circuit board bodies are arranged oppositely, and the raised surfaces of the respective plug connectors 11 are approximately flush; at least one cooling assembly 2, which is arranged between the two circuit board bodies 1, so that the heat conducting surface of the cooling assembly 2 is adapted to transfer the heat of the raised surface of the plug connector 11 for heat dissipation; in short, at least two layers of circuit board bodies 1 are arranged oppositely, and a cooling assembly 2 is arranged therein, and the raised surface of the plug connector 11 is close to the heat conducting surface of the cooling assembly 2 to dissipate heat from the plug connector 11, thereby improving the service life of the circuit board body 1.

[0026] In some embodiments, the cooling assembly 2 includes a cooling box 21 and a cover plate 22; one end of the cooling box 21 is open, the cover plate 22 is covered on the open end of the cooling box 21, and a plurality of liquid passage ports 21a are arranged on the side wall of the cooling box 21, so that a cooling medium circulates in the cooling box 21; in short, the cover plate 22 is covered on the open end of the cooling box 21 to form a sealed chamber, and the circulation of the cooling medium in the chamber is coordinated with the liquid passage ports 21a.

[0027] In some embodiments, a sealing groove 21b is arranged at the open end of the cooling box 21, a sealing strip is arranged in the sealing groove 21b, and the cover plate 22 presses the sealing strip to seal the cooling box 21; in short, a sealing strip (not shown in the figure) is arranged in the sealing groove 21b, and after the cover plate 22 is covered, it presses the sealing strip, which can seal the chamber and prevent the cooling medium from leaking.

[0028] In some embodiments, a number of connecting posts 21c are provided inside the cooling box 21, and connection holes 22a are formed in the cover plate 22. The connection holes 22a and the connecting posts 21c are connected by bolts, and a sealing member is provided at the joint between the connecting posts 21c and the connection holes 22a. In short, the connection holes 22a and the connecting posts 21c are connected by bolts, which can complete the connection between the cover plate 22 and the cooling box 21. And a sealing ring (not shown in the figure) is provided at the joint between the connecting posts 21c and the connection holes 22a. The bolt passes through the sealing ring to complete the sealing of the joint and the joint surface of the connection holes 22a, avoiding medium leakage.

[0029] In some embodiments, a number of positioning cavities 23 are provided on the surfaces of the cooling box 21 and the cover plate 22. The plug connector 11 is adapted to be clamped in the positioning cavities 23 so that the cooling box 21 and the cover plate 22 are limited in position. In short, by providing the positioning cavities 23 on the surfaces of the cooling box 21 and the cover plate 22, the plug connector 11 can be clamped in the positioning cavities 23, and the positions of the cooling box 21 and the cover plate 22 can be limited. And the bottom wall of the positioning cavity 23 is a heat-conducting surface. The plug connector 11 is in contact with the bottom wall of the positioning cavity 23, which can ensure the heat dissipation effect of the plug connector 11.

[0030] In some embodiments, the circuit board body 1 is connected by connecting pins 12. The cooling box 21 and the cover plate 22 are provided with a number of avoidance openings 24, and the connecting pins 12 are arranged in the avoidance openings 24. In short, a number of avoidance openings 24 are provided on the outer shape of the cooling box 21 and the cover plate 22 to avoid the connecting pins 12, which can reduce the area of the circuit board body 1.

[0031] In some embodiments, a number of through holes are formed in the circuit board body 1. The connecting pins 12 are inserted into the through holes, and both ends of the connecting pins 12 extend out of the through holes. And connection heads 12a are provided at the extending ends of the connecting pins 12. In short, the connecting pins 12 are inserted into the through holes, and the connection of the circuit board body 1 is completed through the connection heads 12a.

[0032] In some embodiments, the connection head 12a includes a number of connecting pieces 12b arranged in an array of petals. An annular clamping block 12c is provided on the side wall of the connecting piece 12b. The cross section of the clamping block 12c is a right triangle. The side wall of the clamping block 12c always presses against the surface of the circuit board body 1 to fasten the two circuit board bodies 1. In short, the cross section of the clamping block 12c is designed as a right triangle. When the connection head 12a is inserted, the arc-shaped side wall of the clamping block 12c can guide the deformation of the connecting piece 12b. When the connection head 12a is completely inserted, the connecting piece 12b can be reset so that the bottom wall of the clamping block 12c fastens the circuit board body 1.

[0033] In the description of the embodiments of the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" shall be understood in a broad sense. For example, it 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.

[0034] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] Taking the above-mentioned ideal embodiments of the present utility model as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A multilayer circuit board, characterized in that: include: At least two circuit board bodies (1), the plug connectors of adjacent circuit board bodies are arranged opposite to each other, and the raised surfaces of the plug connectors (11) are approximately flush; At least one cooling component (2) is arranged between the two circuit board bodies (1), so that the heat-conducting surface of the cooling component (2) is suitable for transferring the heat of the convex surface of the plug connector (11) to dissipate heat.

2. The multilayer circuit board according to claim 1, characterized in that: The cooling assembly (2) comprises a cooling box (21) and a cover plate (22); One end of the cooling box (21) is open, the cover plate (22) is arranged to cover the open end of the cooling box (21), and a plurality of liquid passages (21a) are arranged on the side wall of the cooling box (21) so that a cooling medium circulates in the cooling box (21).

3. The multilayer circuit board according to claim 2, characterized in that: The opening end of the cooling box (21) is provided with a sealing groove (21b), a sealing strip is provided in the sealing groove (21b), and the cover plate (22) presses the sealing strip to seal the cooling box (21).

4. The multilayer circuit board according to claim 3, characterized in that: A plurality of connecting columns (21c) are arranged in the cooling box (21); a connecting hole (22a) is provided on the cover plate (22); the connecting hole (22a) and the connecting column (21c) are connected by bolts; and a sealing member is provided at the joint between the connecting column (21c) and the connecting hole (22a).

5. The multilayer circuit board according to claim 4, characterized in that: A plurality of positioning cavities (23) are provided on the surfaces of the cooling box (21) and the cover plate (22), and the plug connector (11) is suitable for being clamped in the positioning cavities (23) so that the cooling box (21) and the cover plate (22) are limited in position.

6. The multilayer circuit board according to claim 5, characterized in that: The circuit board body (1) is connected via a connecting pin (12), the cooling box (21) and the cover plate (22) are provided with a plurality of avoidance openings, and The connecting pin (12) is arranged in the avoidance opening.

7. The multilayer circuit board according to claim 6, characterized in that: The circuit board body (1) is provided with a plurality of through holes, the connecting pins (12) are inserted into the through holes, and both ends of the connecting pins (12) extend out of the through holes, and The protruding end of the connecting pin (12) is provided with a connecting head (12a).

8. The multilayer circuit board according to claim 7, characterized in that: The connector (12a) comprises a plurality of connecting pieces (12b) arranged in a petal array, the side wall of the connecting piece (12b) being provided with an annular clamping block (12c), the cross section of the clamping block (12c) being a right triangle, the side wall of the clamping block (12c) always pressing against the surface of the circuit board body (1) to buckle the two circuit board bodies (1).

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