Circuit board with auxiliary heat dissipation structure

Abstract

The utility model discloses a circuit board with an auxiliary heat dissipation structure, which relates to the field of heat dissipation of circuit boards, and comprises a heat dissipation mechanism for dissipating heat of a transformer mounted on the circuit board, the heat dissipation mechanism comprises a heat dissipation sheet attached to the surface of the transformer and a fixed shell mounted at one end of the heat dissipation sheet, a cooling fan is mounted in an inner cavity of the fixed shell through a connecting frame, and the cooling fins are connected with the fixed shell through a connecting mechanism; the connecting mechanism comprises a butt joint unit and a rotating unit. The butt joint units are arranged on the butt joint end faces of the cooling fins and the fixed shell, and the rotating units are distributed on the butt joint units of the cooling fins and the fixed shell. According to the heat dissipation mechanism, the butt joint unit and the rotating unit are arranged, so that the heat dissipation fan can be rapidly installed without additionally using bolts for fixation, the installation and disassembly processes are relatively convenient, and the assembly efficiency of the heat dissipation mechanism can be further improved.

Description

Technical Field

[0001] The utility model relates to the field of circuit board heat dissipation, in particular to a circuit board with an auxiliary heat dissipation structure. Background Art

[0002] In the prior art, since there are many electronic components on the circuit board, the circuit board will generate more heat during operation. For example, a small transformer on the circuit board uses a heat sink to fit the surface of the transformer and a cooling fan to dissipate heat, so as to quickly reduce the heat generated by the transformer during operation.

[0003] The connection method used for the cooling fan and the radiator in the prior art is bolt connection, which is relatively stable. However, when installing the cooling fan casing and the heat sink, due to the small size of the connecting bolts, it is easy for the threads to slip due to misalignment and twisting during installation, resulting in defective products. There is room for further improvement in work efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a circuit board with an auxiliary heat dissipation structure in order to solve the problems raised by the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: a circuit board with an auxiliary heat dissipation structure, comprising a heat dissipation mechanism for dissipating heat from a transformer mounted on the circuit board, the heat dissipation mechanism comprising a heat sink attached to the surface of the transformer and a fixed shell mounted on one end of the heat sink, a heat dissipation fan is mounted in the inner cavity of the fixed shell through a connecting frame, and the heat sink is connected to the fixed shell through a connecting mechanism;

[0006] The connection mechanism comprises: a docking unit and a rotating unit;

[0007] The docking unit is provided on the docking end surface of the heat sink and the fixed shell, the rotating unit is distributed on the docking unit on the heat sink and the fixed shell, and the docking unit distributed on the heat sink and the fixed shell is staggered after the rotating unit rotates 90 degrees;

[0008] The docking unit in the misaligned state is used to fix the fixed housing to the end of the heat sink.

[0009] As a further solution of the utility model: the docking unit includes a docking hole opened on the docking surface of the heat sink and fixed feet formed at the four corners of the fixed shell, and the center of the fixed foot is rotatably connected with a docking column;

[0010] A limiting block is formed on the end of the outer wall of the docking column, and a guide groove for the limiting block to slide is provided on the inner wall of the docking hole.

[0011] As a further solution of the utility model: the guide groove includes an upper horizontal groove and a lower horizontal groove opened on the inner wall of the docking hole, an arc groove is opened at one end of the upper horizontal groove aligned with the lower horizontal groove, and both ends of the arc groove are connected to the inner wall of the end of the upper horizontal groove aligned with the lower horizontal groove;

[0012] The other end of the upper horizontal groove is aligned with the open end of the docking hole, and the other end of the lower horizontal groove is aligned with the end of the limit block in the inserted state and not extended, and the end of the limit block is the end that is misaligned with the docking column.

[0013] As a further solution of the utility model: the rotating unit includes a circular groove opened at the center of the fixed foot and located on the outer wall of the docking column, the inner wall of the circular groove is movably connected with a connecting plate, and the inner wall of the connecting plate is fixedly connected to the outer wall of the docking column;

[0014] A spring is arranged between one end of the connecting plate and one end of the inner wall of the circular groove. The spring in a reset state drives the end of the docking column to align with the non-docking surface end of the fixed shell through the connecting plate.

[0015] As a further solution of the utility model: a hexagonal hole is provided at the center of the docking post and the non-docked surface of the fixed housing so as to be aligned therewith.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. By setting the docking unit and the rotating unit, the cooling fan can be quickly installed without the need for additional bolts for fixing, and the installation and disassembly process is relatively convenient, which can further improve the assembly efficiency of the cooling mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the connection between the heat sink and the fixed housing of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the limit block of the utility model;

[0021] Figure 4 It is a schematic diagram of the docking of two parts of the docking unit of the utility model;

[0022] Figure 5 For the utility model Figure 4 A partial enlarged view of the middle part;

[0023] Figure 6 For the utility model Figure 4 A partial enlarged view of point B in the middle.

[0024] In the figure: 1. heat sink; 2. fixed shell; 3. fixed foot; 4. connecting frame; 5. cooling fan; 6. docking column; 7. docking hole; 8. limit block; 9. upper horizontal groove; 10. arc groove; 11. lower horizontal groove; 12. connecting plate; 13. spring; 14. round groove; 15. circuit board. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1 to Figure 6 In an embodiment of the utility model, a circuit board with an auxiliary heat dissipation structure includes a heat dissipation mechanism for dissipating heat from a transformer mounted on a circuit board 15, the heat dissipation mechanism includes a heat sink 1 attached to the surface of the transformer and a fixed shell 2 mounted on one end of the heat sink 1, a heat dissipation fan 5 is installed in the inner cavity of the fixed shell 2 through a connecting frame 4, and the heat sink 1 is connected to the fixed shell 2 through a connecting mechanism;

[0027] The connection mechanism includes: a docking unit and a rotating unit;

[0028] The docking unit is provided on the docking end surface of the heat sink 1 and the fixed housing 2, the rotating unit is distributed on the docking unit on the heat sink 1 and the fixed housing 2, and the docking unit distributed on the heat sink 1 and the fixed housing 2 is staggered after the rotating unit rotates ninety degrees;

[0029] The docking unit in the offset state is used to fix the fixed housing 2 to the end of the heat sink 1 .

[0030] In this embodiment: when docking the fixed shell 2 with the heat sink 1, the two parts of the docking unit distributed on the fixed shell 2 and the heat sink 1 are docked until the two parts of the docking unit are completely overlapped, and then a thrust is applied to the rotating unit, and the rotating unit moves along the axial direction of the docking unit. After the rotating unit moves to the maximum displacement distance, a rotational force is applied to the rotating unit to realize the rotation of the rotating unit. After the rotating unit is rotated ninety degrees, the thrust applied to the rotating unit is removed. At this time, the rotating unit is reset, and the locking of the docking unit is completed. Then, the fixed shell 2 can be installed on the heat sink 1. This installation method is quick and convenient.

[0031] Please refer to Figure 1 , Figure 2 and Figure 3 The docking unit includes a docking hole 7 provided on the docking surface of the heat sink 1 and fixed feet 3 formed and fixed at the four corners of the housing 2, and a docking column 6 is rotatably connected at the center of the fixed foot 3;

[0032] A limiting block 8 is formed on the end of the outer wall of the docking column 6, and a guide groove for the limiting block 8 to slide is opened on the inner wall of the docking hole 7.

[0033] In this embodiment: when docking the two parts of the docking unit distributed on the fixed shell 2 and the heat sink 1, align the limit block 8 with the opening of the accommodating groove, and align the docking column 6 with the docking hole 7, and then push the docking column 6 into the docking hole 7. At this time, the limit block 8 slides along the guide groove until the docking column 6 completely enters the docking hole 7.

[0034] Please refer to Figure 5 The guide groove includes an upper horizontal groove 9 and a lower horizontal groove 11 formed on the inner wall of the docking hole 7, an arc groove 10 is formed at one end of the upper horizontal groove 9 aligned with the lower horizontal groove 11, and both ends of the arc groove 10 are connected to the inner wall of the end of the upper horizontal groove 9 aligned with the lower horizontal groove 11;

[0035] The other end of the upper horizontal groove 9 is aligned with the open end of the docking hole 7, and the other end of the lower horizontal groove 11 is aligned with the end of the limit block 8 in the inserted state and not extended, and the end of the limit block 8 is the end that is misaligned with the docking column 6;

[0036] The rotating unit includes a circular groove 14 opened at the center of the fixed foot 3 and located on the outer wall of the docking column 6. The inner wall of the circular groove 14 is movably connected to a connecting plate 12, and the inner wall of the connecting plate 12 is fixedly connected to the outer wall of the docking column 6.

[0037] A spring 13 is provided between one end of the connecting plate 12 and one end of the inner wall of the circular groove 14 . The spring 13 in the reset state drives the end of the docking column 6 to align with the non-docking end of the fixed housing 2 through the connecting plate 12 .

[0038] In this embodiment: during the docking process between the docking column 6 and the docking hole 7, the limit block 8 slides along the inner wall of the upper horizontal groove 9. When the docking column 6 completely enters the docking hole 7, the end face of the docking column 6 is aligned with the non-open end of the lower horizontal groove 11. Then, a tool is used to dock with the end of the docking column 6 outside the docking hole 7, and the docking column 6 is pushed to move along the inner cavity of the docking hole 7. At this time, the docking column 6 drives the connecting plate 12 to move axially in the circular groove 14. During the movement of the connecting plate 12, the spring 13 is squeezed, and the spring 13 is compressed until the end of the docking column 6 contacts the end of the inner wall of the docking hole 7. At this time, the docking column 6 moves to the maximum displacement distance;

[0039] Then, the docking column 6 is rotated by a tool, and the docking column 6 drives the limit block 8 to rotate downward. At this time, the limit block 8 rotates into the lower horizontal groove 11 through the arc groove 10, and then the force applied to one end of the docking column 6 is removed, and the spring 13 pushes the connecting plate 12 to reset in the circular groove 14, and the connecting plate 12 drives the docking column 6 to move, and the docking column 6 drives the limit block 8 to be stuck in the closed end of the lower horizontal groove 11;

[0040] It should be noted that a rubber friction pad is provided at the contact position between the fixed foot 3 and the docking column 6 to increase the rotation resistance of the docking column 6 and prevent the docking column 6 from rotating without human force.

[0041] Please refer to Figure 6 A hexagonal hole is provided at the center of the docking column 6 which is aligned with the non-docked surface of the fixed housing 2 .

[0042] In this embodiment, a hexagonal wrench is used to connect with the hexagonal hole, and rotating the hexagonal wrench can drive the docking column 6 to rotate.

[0043] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A circuit board with an auxiliary heat dissipation structure, comprising a heat dissipation mechanism for dissipating heat from a transformer mounted on the circuit board (15), the heat dissipation mechanism comprising a heat sink (1) attached to the surface of the transformer and a fixed housing (2) mounted on one end of the heat sink (1), a heat dissipation fan (5) being mounted in the inner cavity of the fixed housing (2) via a connecting frame (4), characterized in that: The heat sink (1) is connected to the fixed housing (2) via a connecting mechanism; The connection mechanism comprises: a docking unit and a rotating unit; The docking unit is provided on the docking end surface of the heat sink (1) and the fixed housing (2); the rotating unit is distributed on the docking unit on the heat sink (1) and the fixed housing (2); after the rotating unit rotates ninety degrees, the docking unit distributed on the heat sink (1) and the fixed housing (2) is displaced; The docking unit in the offset state is used to fix the fixed housing (2) to the end of the heat sink (1).

2. A circuit board with an auxiliary heat dissipation structure according to claim 1, characterized in that: The docking unit comprises a docking hole (7) provided on the docking surface of the heat sink (1) and fixed feet (3) formed at the four corners of the fixed housing (2), wherein the center of the fixed foot (3) is rotatably connected to a docking column (6); A limiting block (8) is formed on the end of the outer wall of the docking column (6), and a guide groove for the limiting block (8) to slide is provided on the inner wall of the docking hole (7).

3. A circuit board with an auxiliary heat dissipation structure according to claim 2, characterized in that: The guide groove comprises an upper horizontal groove (9) and a lower horizontal groove (11) which are formed on the inner wall of the docking hole (7); an arc groove (10) is formed at one end of the upper horizontal groove (9) aligned with the lower horizontal groove (11); and both ends of the arc groove (10) are connected to the inner wall of one end of the upper horizontal groove (9) aligned with the lower horizontal groove (11); The other end of the upper horizontal groove (9) is aligned with the open end of the docking hole (7), and the other end of the lower horizontal groove (11) is aligned with the end of the limit block (8) in an inserted state and not extended, and the end of the limit block (8) is the end that is misaligned with the docking column (6).

4. The circuit board with auxiliary heat dissipation structure according to claim 3, characterized in that: The rotating unit comprises a circular groove (14) which is opened at the center of the fixed foot (3) and located on the outer wall of the docking column (6); the inner wall of the circular groove (14) is movably connected to a connecting plate (12); the inner wall of the connecting plate (12) is fixedly connected to the outer wall of the docking column (6); A spring (13) is provided between one end of the connecting plate (12) and one end of the inner wall of the circular groove (14); the spring (13) in a reset state drives the end of the docking column (6) to align with the non-docking surface end of the fixed housing (2) through the connecting plate (12).

5. The circuit board with auxiliary heat dissipation structure according to claim 4, characterized in that: A hexagonal hole is provided at the center of the docking column (6) aligned with the non-docking surface of the fixed housing (2).

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