Precise die-casting cooling fin

Abstract

The utility model discloses a precise die-casting radiating fin which comprises a die-casting radiating fin base, and a plurality of radiating fins are fixedly arranged in the die-casting radiating fin base. L-shaped supports are fixedly arranged on the front end face and the rear end face of the die-casting cooling fin base respectively, a stepping motor is fixedly installed on the upper side of the interior of the second L-shaped support counted from left to right, an output shaft of the stepping motor is connected with a transmission rotating shaft through a coupler, and a threaded rod is fixedly connected to the front end face of the transmission rotating shaft. The stepping motor can drive the cleaning cotton roller located between the heat dissipation fins to rotate and move front and back at the same time, and dust attached to the outer surfaces of the heat dissipation fins can be automatically cleaned through the cleaning cotton roller which rotates and moves front and back at the same time. According to the technical scheme, dust accumulated on the outer surfaces of the cooling fins can be automatically cleaned, so that the cooling effect of the cooling fins can be prevented from being influenced by the dust, and the stability of the cooling effect of the cooling fins is ensured.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology, specifically to a precision die-cast heat sink. Background Technology

[0002] Precision die-cast heat sinks are high-efficiency heat dissipation components manufactured through precision die-casting processes. They are widely used in electronic equipment, automobiles, communication base stations, and other fields to effectively dissipate heat and maintain the normal operation of equipment.

[0003] The design of precision die-cast heat sinks emphasizes heat dissipation efficiency and structural stability. By optimizing the height, thickness, and spacing of the heat dissipation fins, heat dissipation performance can be significantly improved. For example, the fin height can be increased to 110mm, the thickness reduced to 1.2mm, and the spacing shortened to 13mm. In addition, the use of an integrated die-cast shell structure, which integrates the heat dissipation fins onto the shell, can increase the heat dissipation area and improve heat dissipation efficiency.

[0004] However, as the use time of this precision die-cast heat sink increases, dust will gradually accumulate on the outer surface of the heat sink, thereby hindering heat dissipation and reducing heat dissipation efficiency; therefore, it does not meet the existing requirements, so we propose a precision die-cast heat sink. Utility Model Content

[0005] The purpose of this invention is to provide a precision die-cast heat sink to solve the problems mentioned in the background art, such as the accumulation of dust on the outer surface of the heat sink as the usage time increases, which hinders heat dissipation and leads to a decrease in heat dissipation efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a precision die-cast heat sink, comprising a die-cast heat sink base, wherein a plurality of heat dissipation fins are fixedly disposed inside the die-cast heat sink base;

[0007] The front and rear ends of the die-cast heat sink base are each fixedly provided with an L-shaped bracket. A stepper motor is fixedly installed on the upper side inside the second L-shaped bracket from the left. The output shaft of the stepper motor is connected to a transmission shaft through a coupling. A threaded rod is fixedly connected to the front end of the transmission shaft. A concave sleeve connected to the threaded rod through a threaded structure is provided on the outer side of the threaded rod. A square shaft is provided above the threaded rod. The transmission shaft and the rear end of the square shaft are connected in series by a synchronous chain.

[0008] The square rotating shaft has a first bevel gear located inside the inverted concave sleeve on its outer side. The rear end face of the first bevel gear is connected to the inverted concave sleeve by a roller bearing. A square through hole is provided in the middle of the front end face of the first bevel gear. The first bevel gear is movably sleeved on the outer surface of the square rotating shaft through the square through hole. A second bevel gear meshes with each side of the outer surface of the first bevel gear. A long rotating shaft is connected to the axis of the second bevel gear. Multiple third bevel gears are fixedly sleeved on the outer surface of the long rotating shaft. The third bevel gears mesh with a fourth bevel gear. A drive shaft is connected to the axis of the fourth bevel gear. A cleaning cotton roller located between the heat dissipation fins is fixedly sleeved on the lower side of the outer surface of the drive shaft.

[0009] Preferably, a control connector is fixedly provided on one side of the upper end face of the stepper motor, and the control connector extends to the outside of the L-shaped bracket through the L-shaped bracket.

[0010] Preferably, the inverted concave sleeve is inverted concave in shape, and both sides of the inner wall of the inverted concave sleeve are in contact with the outer surface of the die-cast heat sink base, and the inverted concave sleeve is slidably connected to the die-cast heat sink base at the position where the inverted concave sleeve is in contact with the die-cast heat sink base.

[0011] Preferably, the front end of the threaded rod is located inside the first L-shaped bracket from left to right, and the threaded rod located inside the L-shaped bracket is connected to the L-shaped bracket by a roller bearing.

[0012] Preferably, the inner wall cross-section of the square through hole is square, the outer surface of the square rotating shaft is in contact with the inner wall of the square through hole, and the square rotating shaft and the square through hole are slidably connected.

[0013] Preferably, a circular cover plate is provided behind the stepper motor on the outer surface of the L-shaped bracket, and the L-shaped bracket and the circular cover plate are fixed together by screws.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention uses a stepper motor to drive a cleaning cotton roller located between the heat dissipation fins to rotate and move back and forth. The rotating and moving cleaning cotton roller can automatically clean the dust adhering to the outer surface of the heat dissipation fins. Through the above technical solution, the dust accumulated on the outer surface of the heat dissipation fins can be automatically cleaned, thereby preventing the heat dissipation effect of the heat dissipation fins from being affected by dust and ensuring the stability of the heat dissipation effect of the heat dissipation fins. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a side view of the entire utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0019] Figure 4 This is a front view of the entire utility model;

[0020] Figure 5 This utility model Figure 4 Enlarged view of the structure at point B.

[0021] In the diagram: 1. Die-cast heat sink base; 2. Heat dissipation fins; 3. L-shaped bracket; 4. Stepper motor; 5. Control connector; 6. Drive shaft; 7. Threaded rod; 8. Inverted concave sleeve; 9. Square shaft; 10. Synchronous chain; 11. First bevel gear; 12. Square through hole; 13. Second bevel gear; 14. Long shaft; 15. Third bevel gear; 16. Fourth bevel gear; 17. Drive shaft; 18. Cleaning cotton roller. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] The die-cast heat sink base (model TO-3P), stepper motor 4 (model DM542), and threaded rod 7 (model M08) mentioned in this utility model can all be obtained from the market or through private customization.

[0024] Please see Figures 1 to 5 The present invention provides an embodiment of a precision die-cast heat sink, comprising a die-cast heat sink base 1, wherein a plurality of heat dissipation fins 2 are fixedly disposed inside the die-cast heat sink base 1;

[0025] An L-shaped bracket 3 is fixedly installed on both the front and rear ends of the die-cast heat sink base 1. A stepper motor 4 is fixedly installed on the upper side inside the second L-shaped bracket 3 from the left. The output shaft of the stepper motor 4 is connected to a transmission shaft 6 through a coupling. A threaded rod 7 is fixedly connected to the front end of the transmission shaft 6. An inverted concave sleeve 8 is provided on the outside of the threaded rod 7 and connected to it through a threaded structure. A square shaft 9 is provided above the threaded rod 7. The transmission shaft 6 and the rear end of the square shaft 9 are connected in series through a synchronous chain 10.

[0026] A first bevel gear 11 is provided on the outer side of the square rotating shaft 9, located inside the inverted concave sleeve 8. The rear end face of the first bevel gear 11 is connected to the inverted concave sleeve 8 by a roller bearing. A square through hole 12 is provided in the middle of the front end face of the first bevel gear 11. The first bevel gear 11 is movably sleeved on the outer surface of the square rotating shaft 9 through the square through hole 12. A second bevel gear 13 meshes with both sides of the outer surface of the first bevel gear 11. A long rotating shaft 14 is connected to the axis of the second bevel gear 13. A plurality of third bevel gears 15 are fixedly sleeved on the outer surface of the long rotating shaft 14. A fourth bevel gear 16 meshes with the third bevel gear 15. A drive shaft 17 is connected to the axis of the fourth bevel gear 16. A cleaning cotton roller 18 located between the heat dissipation fins 2 is fixedly sleeved on the lower side of the outer surface of the drive shaft 17.

[0027] A control connector 5 is fixedly provided on one side of the upper end face of the stepper motor 4. The control connector 5 extends to the outside of the L-shaped bracket 3 through the L-shaped bracket 3. Before using the equipment, the control device is connected to the stepper motor 4 through the control connector 5 installed on the upper end face of the stepper motor 4. When the die-cast heat sink base 1 and the heat sink fin 2 have been used for a long time and some dust has accumulated on their outer surface, the stepper motor 4 is started. The stepper motor 4 can drive the transmission shaft 6 connected to it and the threaded rod 7 connected to the transmission shaft 6 to rotate.

[0028] The inverted concave sleeve 8 is inverted concave in shape. Both sides of the inner wall of the inverted concave sleeve 8 are in contact with the outer surface of the die-cast heat sink base 1, and the inverted concave sleeve 8 is slidably connected to the die-cast heat sink base 1 at the position where it is in contact. Since both sides of the inner wall of the inverted concave sleeve 8, which is connected to the threaded rod 7 through a threaded structure, are in contact with the die-cast heat sink base 1, the inverted concave sleeve 8 cannot rotate on its own. When the threaded rod 7, which is connected to the inverted concave sleeve 8 through a threaded structure, rotates, the inverted concave sleeve 8, which cannot rotate on its own, will move back and forth under the drive of the threaded structure. When the inverted concave sleeve 8 moves forward, the cleaning cotton roller 18, which is indirectly connected to the inverted concave sleeve 8, will move forward along with it during a certain process.

[0029] The inner wall of the square through hole 12 has a square cross-section. The outer surface of the square rotating shaft 9 fits against the inner wall of the square through hole 12, and the square rotating shaft 9 and the square through hole 12 are slidably connected. During the rotation of the transmission shaft 6, the square rotating shaft 9, which is connected to it via a synchronous chain 10, will rotate together. When the square rotating shaft 9 rotates, the first bevel gear 11, which is movably sleeved on the outer surface of the square rotating shaft 9 through the square through hole 12, will rotate together. When the first bevel gear 11 rotates, the two second bevel gears 13 meshing with it and the long rotating shaft 14 connected to the axis of the second bevel gears 13 will rotate synchronously. The rotating long rotating shaft 14 can drive the fixed... The third bevel gear 15, which is sleeved on the outer surface of the long rotating shaft 14, and the fourth bevel gear 16, which meshes with the third bevel gear 15, rotate. When the fourth bevel gear 16 rotates, the drive shaft 17 connected to the axis of the fourth bevel gear 16 and the cleaning cotton roller 18, which is fixedly sleeved on the outer surface of the drive shaft 17, will rotate together. By moving and rotating the cleaning cotton roller 18, the outer surface of the heat dissipation fin 2 can be cleaned. Through the above technical solution, the dust accumulated on the outer surface of the heat dissipation fin 2 can be automatically cleaned, thereby preventing the heat dissipation effect of the heat dissipation fin 2 from being affected by dust and ensuring the stability of the heat dissipation effect of the heat dissipation fin 2.

[0030] The front end of the threaded rod 7 is located inside the first L-shaped bracket 3 from left to right, and the threaded rod 7 located inside the L-shaped bracket 3 is connected to the L-shaped bracket 3 by a roller bearing; the roller bearing structure between the threaded rod 7 and the L-shaped bracket 3 can ensure the stability of the rotating threaded rod 7.

[0031] A circular cover plate is provided behind the stepper motor 4 on the outer surface of the L-shaped bracket 3, and the L-shaped bracket 3 and the circular cover plate are fixed together by screws; the circular cover plate can protect the stepper motor 4, and when the stepper motor 4 fails, the circular cover plate can be removed to repair the stepper motor 4.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A precision die-cast heat sink, comprising a die-cast heat sink base (1), characterized in that: The die-cast heat sink base (1) is internally fixed with multiple heat dissipation fins (2); The die-cast heat sink base (1) is fixedly provided with an L-shaped bracket (3) on both the front and rear ends. A stepper motor (4) is fixedly installed on the upper side inside the second L-shaped bracket (3) from the left. The output shaft of the stepper motor (4) is connected to a transmission shaft (6) through a coupling. A threaded rod (7) is fixedly connected to the front end of the transmission shaft (6). An inverted concave sleeve (8) is provided on the outside of the threaded rod (7) and connected to it through a threaded structure. A square shaft (9) is provided above the threaded rod (7). The transmission shaft (6) and the rear end of the square shaft (9) are connected in series by a synchronous chain (10). The square rotating shaft (9) has a first bevel gear (11) located inside the inverted concave sleeve (8) on its outer side. The rear end face of the first bevel gear (11) is connected to the inverted concave sleeve (8) by a roller bearing. A square through hole (12) is provided at the middle position of the front end face of the first bevel gear (11). The first bevel gear (11) is movably sleeved on the outer surface of the square rotating shaft (9) through the square through hole (12). Both sides of the outer surface of the first bevel gear (11) are meshed with... A second bevel gear (13) is connected to a long rotating shaft (14) at its axis. A plurality of third bevel gears (15) are fixedly sleeved on the outer surface of the long rotating shaft (14). The third bevel gears (15) mesh with a fourth bevel gear (16). The axis of the fourth bevel gear (16) is connected to a drive shaft (17). A cleaning cotton roller (18) located between the heat dissipation fins (2) is fixedly sleeved on the lower side of the outer surface of the drive shaft (17).

2. The precision die-cast heat sink according to claim 1, characterized in that: A control connector (5) is fixedly provided on one side of the upper end face of the stepper motor (4), and the control connector (5) extends to the outside of the L-shaped bracket (3) through the L-shaped bracket (3).

3. The precision die-cast heat sink according to claim 1, characterized in that: The inverted concave sleeve (8) is inverted concave in shape. Both sides of the inner wall of the inverted concave sleeve (8) are in contact with the outer surface of the die-cast heat sink base (1), and the inverted concave sleeve (8) and the die-cast heat sink base (1) are slidably connected at the position where they are in contact.

4. The precision die-cast heat sink according to claim 1, characterized in that: The front end of the threaded rod (7) is located inside the first L-shaped bracket (3) from left to right, and the threaded rod (7) located inside the L-shaped bracket (3) is connected to the L-shaped bracket (3) by a roller bearing.

5. A precision die-cast heat sink according to claim 1, characterized in that: The inner wall of the square through hole (12) has a square cross-section. The outer surface of the square rotating shaft (9) is in contact with the inner wall of the square through hole (12), and the square rotating shaft (9) and the square through hole (12) are slidably connected.

6. The precision die-cast heat sink according to claim 1, characterized in that: The stepper motor (4) is provided with a circular cover plate on the outer surface of the L-shaped bracket (3) at the rear, and the L-shaped bracket (3) and the circular cover plate are fixed together by screws.

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