Aluminum-based circuit board

Abstract

The utility model belongs to the technical field of circuit boards, and discloses an aluminum-based circuit board, which comprises a circuit board, a heat dissipation plate and a plurality of reinforcing members, and is characterized in that the heat dissipation plate is arranged at the bottom of the circuit board and is provided with a plurality of connecting holes; the plurality of reinforcing members are fixed at the bottom of the circuit board; wherein each reinforcing piece comprises an inserting rod, the bottom of the inserting rod is fixedly connected with a locking block, the inserting rod and the locking block are jointly inserted into the connecting hole, a first vertical groove is formed in the middle of the inserting rod, a second vertical groove is formed in the middle of the locking block, and the first vertical groove is communicated with the second vertical groove. According to the utility model, the locking block is matched with the connecting hole, so that the heat dissipation plate can be firmly fixed on the circuit board, the close contact between the heat dissipation plate and the circuit board is ensured, the stable contact can be kept even under the conditions of thermal expansion and cold contraction, vibration or external force impact and the like, and the heat dissipation effect is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of circuit board, specifically relates to an aluminium base circuit board. BACKGROUND

[0002] In the field of electronic equipment, the aluminium base circuit board is widely applied because of its good heat conduction performance and mechanical strength, however, in the prior art, the design of the aluminium base circuit board often faces the problem that the heat dissipation plate and the circuit board are not connected closely.

[0003] In the patent with the announcement number CN220776146U, a kind of intelligent heat conduction aluminium base circuit board is disclosed, in the patent, ring can be fixedly connected bolt, bolt is slidably connected nut by circuit board, it is convenient to fix the position of heat dissipation plate on circuit board, guarantee its contact close type, ensure the good contact between circuit board and heat dissipation plate, although the mode of fixed by bolt can realize the connection of heat dissipation plate and circuit board, but in actual use process, due to thermal expansion and contraction or external force impact and other factors, gap can appear between heat dissipation plate and circuit board, lead to the interruption of heat conduction path or heat resistance increase, thereby influence the heat dissipation effect. UTILITY MODEL CONTENTS

[0004] To solve the above technical problem, the utility model provides an aluminium base circuit board, so that the heat dissipation plate can be firmly fixed on the circuit board, ensure the close contact between heat dissipation plate and circuit board, even under the condition of thermal expansion and contraction, vibration or external force impact, can also keep stable contact, ensure the heat dissipation effect.

[0005] The technical scheme of the utility model is as follows: an aluminium base circuit board, comprising circuit board, heat dissipation plate and multiple reinforcing members, the heat dissipation plate is arranged at the bottom of the circuit board, and multiple connecting holes are arranged on the heat dissipation plate;Multiple reinforcing members are fixed at the bottom of the circuit board.

[0006] Each reinforcing member comprises a plug rod, the bottom of the plug rod is fixedly connected with a locking block, and the plug rod and the locking block are jointly inserted into the connecting hole.

[0007] As a preferred scheme of the aluminium base circuit board, the middle part of the plug rod is provided with a first vertical groove, the middle part of the locking block is provided with a second vertical groove, and the first vertical groove and the second vertical groove are communicated.

[0008] As a preferred scheme of the aluminium base circuit board, the first vertical groove and the second vertical groove are both in the shape of a Chinese character or a cross.

[0009] As a preferred scheme of the aluminium base circuit board, the cross section of the locking block is in the shape of a trapezoid.

[0010] As a preferred scheme of the aluminum-based circuit board, the plurality of locking blocks form a circular truncated cone body, and the outer diameter of the circular truncated cone body gradually decreases in a direction away from the insertion rod.

[0011] As a preferred scheme of the aluminum-based circuit board, the connecting hole comprises an insertion hole and a locking hole, and the inner diameter of the locking hole is greater than the inner diameter of the insertion hole.

[0012] As a preferred scheme of the aluminum-based circuit board, the insertion rod is located in the insertion hole, and the circular truncated cone body is located in the locking hole.

[0013] As a preferred scheme of the aluminum-based circuit board, the top of the locking block is provided with an abutting portion, and the top of the abutting portion abuts against the inner top wall of the locking hole.

[0014] As a preferred scheme of the aluminum-based circuit board, the maximum outer diameter of the plurality of locking blocks when being contracted is less than the inner diameter of the insertion hole, the maximum outer diameter of the plurality of locking blocks when being expanded is greater than the inner diameter of the insertion hole, and the maximum outer diameter of the plurality of locking blocks when being expanded is less than the inner diameter of the locking hole.

[0015] The one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0016] In the present application, the insertion rod and the locking block are jointly inserted into the connecting hole, and the cooperation of the locking block and the connecting hole enables the heat dissipation plate to be firmly fixed on the circuit board, thereby ensuring the close contact between the heat dissipation plate and the circuit board. Even in the case of thermal expansion and contraction or external force impact, stable contact can be maintained, and the heat dissipation effect is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 is a structural schematic view of the present application;

[0019] Figure 2 is an exploded view of the structure of the present application;

[0020] Figure 3 is a bottom view of the heat dissipation plate structure of the present application;

[0021] Figure 4 is a side view of the circuit board structure of the present application;

[0022] Figure 5 For the utility model Figure 4 The local amplification structure schematic view in A place in the utility model is shown in the figure.

[0023] Figure 6 For the utility model heat dissipation plate structure side view section view.

[0024] In the drawings:

[0025] 100, circuit board; 200, heat dissipation plate; 300, reinforcing piece; 310, insertion rod; 320, first vertical groove; 330, locking block; 340, second vertical groove; 350, abutting portion; 400, connecting hole; 410, insertion hole; 420, locking hole. Specific implementation

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative positional relationship, movement condition and the like between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0028] During the operation of the aluminum-based circuit board, the electronic components thereon generate a large amount of heat. If the heat cannot be dissipated in time, the temperature of the electronic components will rise, thereby affecting the performance and service life of the electronic components. The heat dissipation plate is usually made of a material with high thermal conductivity, which can effectively conduct the heat on the aluminum-based circuit board away, thereby reducing the working temperature of the electronic components and improving the stability and reliability of the electronic components.

[0029] In the prior art, the connection between the heat dissipation plate and the circuit board is mostly achieved by using fasteners such as bolts and nuts. Although this method is firm, the installation and disassembly process is complicated, and additional tools and time are required. In addition, the use of fasteners also increases the overall weight and manufacturing cost of the circuit board.

[0030] And when dealing with complex working environments, such as vibration and impact, loosening is prone to occur, thereby affecting the stability and reliability of the circuit board.

[0031] The utility model provides a kind of aluminum base circuit board, locking block 330 is cooperated with connecting hole 400, so that heat sink 200 can be firmly fixed on circuit board 100, ensure the close contact between heat sink 200 and circuit board 100, even in thermal expansion and contraction, vibration or external force impact, etc.

[0032] Specifically:

[0033] Please refer to Figures 1-6 A kind of aluminum base circuit board, including circuit board 100, heat sink 200 and multiple reinforcing members 300, heat sink 200 is arranged at the bottom of circuit board 100, and multiple connecting holes 400 are equipped on heat sink 200;Multiple reinforcing members 300 are fixed at the bottom of circuit board 100, heat sink 200 is arranged at the bottom of circuit board 100, and is fixed by multiple reinforcing members 300, enhance the overall structural strength of circuit board 100, also ensure the close contact between heat sink 200 and circuit board 100, improve heat dissipation efficiency.

[0034] In some embodiments, heat sink 200 can be designed to have the structure of heat dissipation fin or heat dissipation groove, to increase the heat dissipation area and improve the heat dissipation efficiency. In addition, heat sink 200 can also be used with fan, fin and other heat dissipation devices.

[0035] Each reinforcing member 300 includes a plug rod 310, the bottom of the plug rod 310 is fixedly connected with a locking block 330, the plug rod 310 and the locking block 330 are jointly inserted into the connecting hole 400, which facilitates the installation and disassembly between the circuit board 100 and the heat sink 200, and also reduces the risk of loosening caused by vibration or external force impact.

[0036] As Figure 5 The middle part of the plug rod 310 is provided with a first vertical groove 320, the middle part of the locking block 330 is provided with a second vertical groove 340, the first vertical groove 320 and the second vertical groove 340 are communicated, when the plug rod 310 and the locking block 330 are inserted into the connecting hole 400, multiple plug rods 310 and locking blocks 330 are extruded by the inner wall of the connecting hole 400 and have a certain elastic deformation capacity, facilitating the installation and fixation between the circuit board 100 and the heat sink 200.

[0037] The first vertical groove 320 and the second vertical groove 340 are both in the shape of a Chinese character or a cross, which exerts force on multiple plug rods 310 and locking blocks 330, facilitating the inward contraction of multiple plug rods 310 and locking blocks 330.

[0038] As Figure 5 The cross section of the locking block 330 is trapezoidal, and multiple locking blocks 330 form a circular truncated cone body, the outer diameter of the circular truncated cone body gradually decreases away from the plug rod 310, facilitating the insertion of the reinforcing member 300 into the connecting hole 400.

[0039] As Figure 6 shown, the connecting hole 400 includes a plug hole 410 and a locking hole 420, the inner diameter of the locking hole 420 is larger than that of the plug hole 410, the insertion rod 310 is located in the plug hole 410, the circular truncated cone body is located in the locking hole 420, the top of the locking block 330 is provided with an abutting portion 350, the top of the abutting portion 350 abuts against the inner top wall of the locking hole 420, when the reinforcing member 300 is completely inserted into the connecting hole 400, the top of the abutting portion 350 will abut against the inner top wall of the locking hole 420, thereby ensuring the close connection between the heat dissipation plate 200 and the circuit board 100.

[0040] As Figure 4 and Figure 5 shown, the maximum outer diameter of the plurality of locking blocks 330 when contracted is smaller than the inner diameter of the plug hole 410, the maximum outer diameter of the plurality of locking blocks 330 when expanded is larger than the inner diameter of the plug hole 410, the maximum outer diameter of the plurality of locking blocks 330 when expanded is smaller than the inner diameter of the locking hole 420, when the reinforcing member 300 is inserted into the connecting hole 400, the plurality of locking blocks 330 first enter the plug hole 410 to be preliminarily positioned with a smaller outer diameter, then the plurality of locking blocks 330 slide downward with the maximum outer diameter being located at the inner wall of the plug hole 410, when the locking blocks 330 enter the locking hole 420, the plurality of locking blocks 330 expand to increase the outer diameter, at this time, the abutting portion 350 on the locking block 330 will abut against the inner top wall of the locking hole 420, thereby facilitating the connection and fixation between the heat dissipation plate 200 and the circuit board 100, and ensuring the close contact, even in the case of thermal expansion and contraction or external force impact, the stable contact can also be maintained, and the heat dissipation effect is ensured.

[0041] It should be noted that the terms "comprising", "containing", or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles or equipment including a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles or equipment.

[0042] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An aluminum-based wiring board, characterized by, The application relates to a circuit board (100), a heat dissipation plate (200) arranged at the bottom of the circuit board (100), and a plurality of reinforcing members (300) fixed to the bottom of the circuit board (100). The reinforcing member (300) comprises a plug rod (310) and a locking block (330) fixedly connected to the bottom of the plug rod (310). The plug rod (310) and the locking block (330) are jointly inserted into a connecting hole (400). The middle part of the plug rod (310) is provided with a first vertical groove (320), and the middle part of the locking block (330) is provided with a second vertical groove (340). The first vertical groove (320) and the second vertical groove (340) are in communication. The first vertical groove (320) and the second vertical groove (340) are in the shape of a Chinese character or a cross.

2. The aluminum-based wiring board of claim 1 wherein, The locking block (330) is in the shape of a trapezoid in cross section.

3. The aluminum-based wiring board of claim 2 wherein, The locking blocks (330) form a circular truncated cone body, and the outer diameter of the circular truncated cone body gradually decreases in the direction away from the plug rod (310).

4. The aluminum-based wiring board of claim 1 wherein, The connecting hole (400) comprises an insertion hole (410) and a locking hole (420), and the inner diameter of the locking hole (420) is larger than that of the insertion hole (410).

5. The aluminum-based wiring board of claim 4 wherein, The plug rod (310) is located in the insertion hole (410), and the circular truncated cone body is located in the locking hole (420).

6. The aluminum-based wiring board of claim 5 wherein, The top of the locking block (330) is provided with an abutting portion (350), and the top of the abutting portion (350) abuts against the inner top wall of the locking hole (420).

7. The aluminum-based wiring board of claim 6 wherein, When the locking blocks (330) are contracted, the maximum outer diameter is smaller than the inner diameter of the insertion hole (410), when the locking blocks (330) are expanded, the maximum outer diameter is larger than the inner diameter of the insertion hole (410), and when the locking blocks (330) are expanded, the maximum outer diameter is smaller than the inner diameter of the locking hole (420).

8. The aluminum-based wiring board of claim 7 wherein, ​ 9. The aluminum-based wiring board of claim 8 wherein, ​

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