Circuit board heat dissipation device

Abstract

The utility model relates to the technical field of circuit boards, and discloses a circuit board heat dissipation device, which comprises a fan top cover and a protection box, the middle part of the protection box is rotatably connected with a rotating torsion bar, the top end of the rotating torsion bar is fixedly connected with a master gear, the middle part of the bottom end of the protection box is rotatably connected with four slave gears, and the four slave gears are fixedly connected with the fan top cover. A connecting column is fixedly connected to the bottom end of the driven gear, long-strip rings are slidably connected to the outer portion of the connecting column, connecting rods are fixedly connected to the sides, far away from each other, of the front long-strip ring and the rear long-strip ring, longitudinal rods are fixedly connected to the top ends of the two connecting rods, and the left end and the right end of the side, close to the driven gear, of each longitudinal rod are fixedly connected. According to the fan top cover, the driving gear and the driven gear can be adjusted according to the sizes of the circuit boards so as to adapt to the circuit boards of different sizes, effective heat dissipation of the circuit boards is achieved, noise generated by fan vibration is effectively reduced through an elastic steel piece and spring elastic mechanism, and abrasion to fan top cover machine body components is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a circuit board heat dissipation device. Background Art

[0002] At present, for electronic devices, certain heat will be generated during operation, thus causing the internal temperature of the device to rise rapidly. If the heat is not dissipated in time, the device will continue to heat up, the components will fail due to overheating, and the reliability of the electronic device will decline. Therefore, it is very important to perform good heat dissipation treatment on the circuit board.

[0003] Traditional circuit board heat dissipation methods include using radiators, fans or liquid cooling systems, etc. Although these methods can solve the heat dissipation problem to a certain extent, there are still some deficiencies. For example, radiators are limited by volume and efficiency and cannot well meet the heat dissipation requirements of high heat flux density; fans will generate noise and are sensitive to dust; the liquid cooling system has a complex structure and high cost and is not applicable to all occasions. For this reason, in view of the above problems, a circuit board heat dissipation device is proposed to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a circuit board heat dissipation device for the deficiencies of the prior art. The system drives a connecting column through a main gear and a driven gear, so that a long strip ring, a longitudinal rod, a transverse rod and a mounting member slide synchronously to fix and adjust the clamping distance of the circuit board. The top cover of the fan dissipates heat from the circuit board through the bottom mesh holes. At the same time, the cooperation of the connecting block, the elastic steel member, the telescopic rod and the spring effectively absorbs the vibration of the fan, reduces noise and wear.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A circuit board heat dissipation device includes a fan top cover and a protective box. A rotating torsion bar is rotatably connected to the middle of the protective box. A main gear is fixedly connected to the top end of the rotating torsion bar. Four driven gears are rotatably connected to the middle of the bottom end of the protective box. A connecting column is fixedly connected to the bottom end of the driven gear. A long strip ring is slidably connected to the outside of the connecting column. A connecting rod is fixedly connected to the far side of the front and rear two long strip rings. The top ends of the two connecting rods are fixedly connected with a longitudinal rod. Both the left and right ends of the side of the longitudinal rod close to the driven gear are fixedly connected with... A connecting roller is fixedly connected to the far side of the left and right two long strip rings. The top ends of the far sides of the two connecting rollers are fixed with a transverse rod. Both the front and rear sides of the side of the transverse rod close to the driven gear are fixedly connected with a second mounting member. A placement box is fixedly connected to the top end of the protective box. A limiting component for fixing and adjusting circuit boards of different sizes is arranged at the top end of the placement box;

[0007] As a further description of the above technical solution:

[0008] The limiting component includes two first chutes, which are opened in the middle of the front and rear sides of the placement box, and second chutes are opened in the middle of the left and right sides of the placement box respectively;

[0009] As a further description of the above technical solution:

[0010] Connecting pieces are fixedly connected to the four corners of the outside of the placement box, connecting blocks are fixedly connected to the four corners of the outside of the blower top cover, an elastic steel piece is fixedly connected to the bottom end of the connecting block, telescopic rods are fixedly connected to the inner sides of the upper and lower ends of the elastic steel piece, a spring is sleeved on the outside of the telescopic rod, a sliding column is fixedly connected to the bottom end of the elastic steel piece, and a plug column is fixedly connected to the bottom end of the sliding column;

[0011] As a further description of the above technical solution:

[0012] The external teeth of the main gear are meshed with the external teeth of the driven gear, and the bottom end of the long strip ring is slidably connected to the top end of the driven gear;

[0013] As a further description of the above technical solution:

[0014] The top end of the long strip ring is slidably connected to the top end of the placement box;

[0015] As a further description of the above technical solution:

[0016] The bottom end of the vertical rod is slidably connected to the inner wall of the top end of the placement box, and the bottom end of the horizontal rod is slidably connected to the inner wall of the top end of the placement box;

[0017] As a further description of the above technical solution:

[0018] The outside of the plug column is engaged with the inner wall of the connecting piece;

[0019] As a further description of the above technical solution:

[0020] Both the upper and lower ends of the spring are fixedly connected to the inner sides of the upper and lower ends of the elastic steel piece, and the outside of the sliding column is slidably connected to the four corners of the outside of the blower top cover.

[0021] The beneficial effects of the present utility model are as follows:

[0022] (1) In this utility model, the circuit board is placed in the top placement box. Then, the component protection box is rotated to push the component rotating torsion bar, thereby driving the component main gear to mesh with the driven gear, and finally driving the component connecting column to rotate. The outer part of the component connecting column is wrapped with a component long strip ring, enabling the connecting column to slide on the inner wall of the long strip ring. The long strip ring can drive the middle parts of the vertical rod and the horizontal rod to slide and connect in the slots of the first chute and the second chute. Thus, the fixation of the circuit board is achieved, and the main gear and the driven gear of the component can be adjusted according to the size of the circuit board to adapt to circuit boards of different sizes, so as to effectively dissipate heat from the circuit board.

[0023] (2) In this utility model, the vibration generated by the rotation of the internal fan blower top cover is utilized. The movement of the fan blades causes the blower top cover to squeeze the elastic steel part through the interface connecting block. The elastic steel part utilizes its own elastic potential energy and the cooperation with the telescopic rod and the spring to absorb and buffer the vibration conducted by the blower top cover. The effective elastic mechanism of the elastic steel part and the spring reduces the noise generated by the fan vibration, reduces the wear on the components of the blower top cover body, and improves the stability and service life of the equipment.

[0024] In summary, this utility model has the advantages of fixing and dissipating heat for different circuit boards, reducing the noise generated when the fan starts, and reducing the wear on the fan components. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional schematic diagram of a circuit board heat dissipation device proposed by this utility model;

[0026] Figure 2 It is a structural schematic diagram of the first chute of a circuit board heat dissipation device proposed by this utility model;

[0027] Figure 3 It is a structural schematic diagram of the placement box of a circuit board heat dissipation device proposed by this utility model;

[0028] Figure 4 It is a structural schematic diagram of the connecting column of a circuit board heat dissipation device proposed by this utility model;

[0029] Figure 5 It is an exploded view of the main gear of a circuit board heat dissipation device proposed by this utility model;

[0030] Figure 6 It is a structural schematic diagram of the elastic steel part of a circuit board heat dissipation device proposed by this utility model.

[0031] LEGEND DESCRIPTION:

[0032] 1. Blower top cover; 2. Protection box; 3. Rotating torsion bar; 4. Main gear; 5. Driven gear; 6. Connecting column; 7. Long strip ring; 8. Connecting rod; 9. Vertical rod; 10. Mounting part II; 11. Connecting roller; 12. Cross bar; 13. Mounting part II; 14. Placing box; 15. First chute; 16. Second chute; 17. Connecting piece; 18. Connecting block; 19. Elastic steel piece; 20. Telescopic rod; 21. Spring; 22. Sliding column; 23. Inserting column. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0035] Embodiment 1

[0036] Refer to Figures 1 to 3 , an embodiment provided by the present invention: A circuit board heat dissipation device includes a blower top cover 1 and a protection box 2. The blower top cover 1 is composed of a blower, a heat conduction component and a diversion mesh cover. The middle part of the protection box 2 is rotatably connected with a rotating torsion bar 3, and the position of the rotating torsion bar 3 is limited at the top of the protection box 2.

[0037] Embodiment 2

[0038] As Figure 4 , Figure 5As shown in the figure, the components that are the same as or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment will be described below. The differences between the second embodiment and the first embodiment are as follows:

[0039] A main gear 4 is fixedly connected to the top end of the rotating torsion bar 3. Four driven gears 5 are rotatably connected to the middle of the bottom end of the protective box 2. The external teeth of the main gear 4 are meshed with the external teeth of the driven gears 5. When the main gear 4 rotates, the driven gears 5 also start to rotate. Among the four driven gears 5, the connecting columns 6 of the front and rear driven gears 5 are fixed to the edge positions on the far sides of the front and rear driven gears 5 and are fixed at positions in opposite directions. The connecting columns 6 of the left and right driven gears 5 are fixed to the edge positions on the far sides of the left and right driven gears 5 and are fixed at positions in opposite directions.

[0040] A long strip ring 7 is slidably connected to the outside of the connecting column 6. The bottom end of the long strip ring 7 is slidably connected to the top end of the driven gear 5. The rotation of the connecting column 6 will drive the long strip ring 7 sleeved on the outside to slide along the inner wall of the driven gear 5. Connecting rods 8 are fixedly connected to the far sides of the front and rear long strip rings 7. The top ends of the two connecting rods 8 are fixedly connected to a longitudinal rod 9. Both the left and right ends of the side of the longitudinal rod 9 close to the driven gear 5 are fixedly connected with 10. The far sides of the front and rear long strip rings 7 are connected to the longitudinal rod 9 and 10 through the connecting rods 8.

[0041] Connecting rollers 11 are fixedly connected to the far sides of the left and right long strip rings 7. Cross bars 12 are fixed to the top ends of the far sides of the two connecting rollers 11. Mounting parts two 13 are fixedly connected to both the front and rear sides of the side of the cross bar 12 close to the driven gear 5. The far sides of the left and right long strip rings 7 are connected to the cross bar 12 and the mounting parts two 13 through the connecting rollers 11. A placement box 14 is fixedly connected to the top end of the protective box 2. The top end of the long strip ring 7 is slidably connected to the top end of the placement box 14. The bottom end of the longitudinal rod 9 is slidably connected to the inner wall of the top end of the placement box 14. The bottom end of the cross bar 12 is slidably connected to the inner wall of the top end of the placement box 14. The cross bar 12 and the longitudinal rod 9 slide on the top end of the placement box 14 to relatively retract and reduce the distance or enlarge the distance between them, so as to fix circuit boards of different sizes.

[0042] A limiting component for fixing and adjusting circuit boards of different sizes is provided at the top end of the placement box 14. The limiting component includes two chutes one 15, which are opened in the middle of the front and rear sides of the placement box 14. Chutes two 16 are opened in the middle of the left and right sides of the placement box 14. A limiting component is provided at the top end of the placement box 14, including two chutes one 15 in the front and rear and two chutes two 16 in the left and right, for adjusting the fixation of circuit boards of different sizes.

[0043] Embodiment Three

[0044] As Figure 1 、Figure 6 As shown in the figure, this embodiment provides a buffering method.

[0045] Connectors 17 are fixedly connected to the outer four corners of the placement box 14. Connecting blocks 18 are fixedly connected to the outer four corners of the top cover 1 of the fan. An elastic steel piece 19 is fixedly connected to the bottom end of the connecting block 18. Telescopic rods 20 are fixedly connected to the inner sides of the upper and lower ends of the elastic steel piece 19. A spring 21 is sleeved on the outer side of the telescopic rod 20. The upper and lower ends of the spring 21 are fixedly connected to the inner sides of the upper and lower ends of the elastic steel piece 19. A sliding column 22 is fixedly connected to the bottom end of the elastic steel piece 19. The outer side of the sliding column 22 is slidably connected to the outer four corners of the top cover 1 of the fan. The elastic steel piece 19 is fixedly connected to the bottom end of the connecting block 18. The elastic steel piece 19 cooperates with the telescopic rod 20 and the spring 21, and the outer corner of the top cover 1 of the fan is slidably connected through the sliding column 22.

[0046] A plug post 23 is fixedly connected to the bottom end of the sliding column 22. The outer side of the plug post 23 is engaged with the inner wall of the connector 17. After the circuit board is installed, the plug posts 23 defined around the top cover 1 of the fan can be aligned with the holes on the connector 17 of the placement box 14 for installation and fixation. During this process, screw fixation can be carried out in cooperation with bolts.

[0047] Working steps

[0048] Step 1: First, place the circuit board on the top of the placement box 14. Then, rotate the rotating lever 3 at the top of the protective box 2 to drive the main gear 4 to rotate. After the main gear 4 rotates, it will engage with the driven gear 5 and drive the driven gear 5 to rotate. The driven gear 5 drives the connecting column 6 to rotate. At this time, since the connecting column 6 is sleeved with a long strip ring 7, the connecting column 6 slides on the inner wall of the long strip ring 7. The far sides of the front and back long strip rings 7 are connected to the vertical rods 9 and 10 through the connecting rod 8. The far sides of the left and right long strip rings 7 are connected to the cross rod 12 and the mounting member II 13 through the connecting roller 11. The middle of the bottom end of the vertical rod 9 is slidably connected to the groove of the chute I 15. The bottom end of the cross rod 12 slides in the groove of the chute II 16. Therefore, when the long strip ring 7 is driven by the connecting column 6 of the driven gear 5 along the rotation trend of the driven gear 5, the front and back long strip rings 7 slide back and forth and then slide off the driven gear 5 and pull the vertical rod 9 sliding in the chute I 15 to slide relatively through the connecting rod 8. The left and right long strip rings 7 will also synchronously pull the mounting member II 13 sliding in the chute II 16 to slide relatively through the connecting roller 11, so as to fix the circuit board placed in the placement box 14. And the main gear 4 can be continuously rotated according to the size of the circuit board. By the main gear 4 engaging with the driven gear 5 to rotate, the driven gear 5 indirectly drives the cross rod 12 and the vertical rod 9 to relatively retract and reduce the distance or enlarge the distance between them through the long strip ring 7, so as to fix circuit boards of different sizes.

[0049] Step 2: After the outer periphery of the circuit board is clamped and fixed by the connecting rollers 11 and the longitudinal rods 9, at this time, pass the bolts through the holes of 10 and the corresponding holes of the circuit board for installation to firmly fix the circuit board.

[0050] After the circuit board is installed, the insertion posts 23 defined around the blower top cover 1 can be aligned with the holes on the connecting member 17 of the placement box 14 for installation and fixation. During this process, screw fixation can be carried out in cooperation with bolts. After fixation, finally start the blower top cover 1, and let the blower top cover 1 blow air to dissipate heat from the circuit board fixed at the top of the placement box 14 through the mesh holes opened at the bottom end of the blower top cover 1. During the use of the blower top cover 1, due to the rotation of the internal fan of the blower top cover 1 itself, the blower top cover 1 itself will be driven by the rotation of the fan blades to generate vibration. At this time, the blower top cover 1 will squeeze the elastic steel member 19 through the connecting block 18, and the elastic steel member 19 will absorb and buffer the vibration transmitted by the blower top cover 1 through the connecting block 18 through the elastic potential energy of the elastic steel member 19 itself and the cooperation of the telescopic rod 20 and the spring 21, thereby effectively reducing the noise generated by the vibration and the wear of the body components of the blower top cover 1.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A circuit board heat dissipation device, comprising a fan top cover and a protective box, characterized in that: The middle part of the protective box is rotatably connected with a rotating torsion bar, the top of the rotating torsion bar is fixedly connected with a main gear, the middle part of the bottom end of the protective box is rotatably connected with four slave gears, the bottom end of the slave gear is fixedly connected with a connecting column, the outside of the connecting column is slidably connected with a long ring, the far side of the front and rear two long rings are fixedly connected with a connecting rod, the tops of the two connecting rods are fixedly connected with a longitudinal rod, the left and right ends of the longitudinal rod close to the slave gear are fixedly connected, the far side of the left and right two long rings are fixedly connected with a connecting roller, the far tops of the two connecting rollers are fixed with a cross bar, the front and rear sides of the cross bar close to the slave gear are fixedly connected with mounting parts 2, the top of the protective box is fixedly connected with a placement box, and the top of the placement box is provided with a limiting component for fixing and adjusting circuit boards of different sizes.

2. A circuit board heat dissipation device according to claim 1, characterized in that: The limiting component comprises two slide grooves 1, wherein the slide grooves 1 are arranged in the middle of the front and rear sides of the placing box, and slide grooves 2 are arranged in the middle of the left and right sides of the placing box.

3. A circuit board heat dissipation device according to claim 1, characterized in that: The four external corners of the placement box are fixedly connected with connecting parts, the four external corners of the fan top cover are fixedly connected with connecting blocks, the bottom end of the connecting block is fixedly connected with an elastic steel piece, the inner sides of the upper and lower ends of the elastic steel piece are fixedly connected with telescopic rods, the outer side of the telescopic rod is sleeved with a spring, the bottom end of the elastic steel piece is fixedly connected with a sliding column, and the bottom end of the sliding column is fixedly connected with a plug column.

4. A circuit board heat dissipation device according to claim 1, characterized in that: The outer teeth of the main gear are meshed with the outer teeth of the slave gear, and the bottom end of the long ring is slidably connected to the top end of the slave gear.

5. The circuit board heat dissipation device according to claim 1, characterized in that: The top end of the long ring is slidably connected to the top end of the placement box.

6. A circuit board heat dissipation device according to claim 1, characterized in that: The bottom end of the longitudinal rod is slidably connected to the top inner wall of the placement box, and the bottom end of the cross rod is slidably connected to the top inner wall of the placement box.

7. A circuit board heat dissipation device according to claim 3, characterized in that: The outer portion of the plug post is engaged with the inner wall of the connector.

8. A circuit board heat dissipation device according to claim 3, characterized in that: The upper and lower ends of the spring are fixedly connected to the inner sides of the upper and lower ends of the elastic steel member, and the outer portion of the sliding column is slidably connected to the outer four corners of the fan top cover.

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