Direct current motor with self-cooling heat dissipation function

Abstract

The invention relates to the technical field of direct-current motors, and discloses a direct-current motor with a self-cooling heat dissipation function, which comprises a heat dissipation box, a direct-current motor main body arranged in the heat dissipation box, a rotating shaft arranged on the direct-current motor main body, a cooling cavity arranged on the heat dissipation box, and a feeding pipe and a discharging pipe which are arranged on the heat dissipation box and are communicated with the interior of the cooling cavity, the vacuum cavity is arranged on the heat dissipation box, and the heat dissipation unit is arranged on the heat dissipation box. According to the direct-current motor with the self-cooling heat dissipation function, the direct-current motor body is rotated, the rotating shaft is driven to rotate, the heat dissipation component is driven to rotate, heat dissipation of the direct-current motor body is conducted, and the situation that the heat dissipation of the direct-current motor body is affected due to the fact that the external environment temperature rises is avoided; therefore, the heat dissipation assembly can dissipate heat of the direct current motor body more efficiently, and the heat dissipation effect of the direct current motor body is prevented from becoming poor due to increase of heat productivity of the direct current motor body.

Description

Technical Field

[0001] The invention relates to the technical field of direct current motors, and in particular to a direct current motor with self-cooling and heat dissipation functions. Background Art

[0002] The DC motor is mainly composed of two parts: the stator and the rotor. The stator is stationary and its main function is to generate a magnetic field. It is composed of a base, main magnetic poles, commutation poles, end covers, etc. The rotor rotates and its main function is to generate electromagnetic torque and induced electromotive force. It is the hub of energy conversion for the DC motor and is composed of a rotating shaft, armature core, armature winding, commutator, etc. The DC motor has good starting and acceleration performance, can respond quickly to the driver's instructions, and provide high torque output to meet the needs of new energy vehicles for low-speed and high-torque power sources. Secondly, the DC motor has a wide speed regulation range and can achieve precise speed regulation by changing the voltage or current to adapt to different road conditions and driving needs.

[0003] Existing DC motor heat dissipation methods mainly include air cooling and water cooling. Air cooling uses a cooling fan to drive air through the motor to reduce the motor temperature, which is suitable for small and medium power motors. Water cooling uses a water cooler to drive cooling water through the motor to dissipate heat, which is suitable for high power motors and has high heat dissipation efficiency. The existing technology also has the following defects during use:

[0004] 1. When the DC motor is cooled by air, if the fan speed is fixed, the cooling effect is often unsatisfactory. The constant fan speed means that the air flow and cooling capacity are relatively fixed, but the heat generated by the DC motor will change with the load during operation. When the load increases, the heat generated by the motor increases. If the fan speed remains unchanged, the cooling effect cannot meet the demand, which may cause the motor to overheat and affect its performance and life.

[0005] 2. When the DC motor adopts water cooling, the temperature of the external environment will have a significant impact on the heat dissipation effect. In a high temperature environment, the temperature of the cooling water will rise, resulting in a decrease in its heat dissipation capacity. This is because the heat conduction efficiency is affected by the temperature difference. The high external temperature reduces the temperature difference between the cooling water and the environment, thereby reducing the effective heat loss. Summary of the invention

[0006] In view of the problems that the DC motor in the prior art adopts air cooling and the fan speed is fixed, which affects the heat dissipation effect, and the DC motor adopts water cooling and the external ambient temperature will affect the heat dissipation, a DC motor with self-cooling function is proposed.

[0007] The present application provides a DC motor with self-cooling and heat dissipation function, the purpose of which is to solve the problem that when the fan speed is fixed, the heat generation of the DC motor increases, the heat dissipation effect is poor, and the temperature of the external environment rises, which affects the heat dissipation.

[0008] The technical solution of the present invention is: a DC motor with self-cooling and heat dissipation function, comprising a heat dissipation box, a DC motor body arranged in the heat dissipation box, a rotating shaft arranged on the DC motor body, a cooling cavity arranged on the heat dissipation box, a feeding pipe and a discharging pipe arranged on the heat dissipation box and communicating with the cooling cavity, and a vacuum cavity arranged on the heat dissipation box, and also comprising a heat dissipation unit arranged on the heat dissipation box;

[0009] The heat dissipation unit includes a heat dissipation component arranged on the heat dissipation box, a reciprocating component arranged on one side of the heat dissipation box, and a blocking component arranged on the heat dissipation box. The heat dissipation component includes a heat dissipation assembly arranged in the heat dissipation box, and a first pushing assembly arranged on the heat dissipation assembly.

[0010] The heat dissipation assembly includes a connecting shaft rotatably connected to the heat dissipation box, a heat dissipation fan and a first gear fixedly mounted on the connecting shaft, a first side plate fixedly connected to the inner wall of the heat dissipation box, a moving shaft movably connected to the first side plate, a second gear fixedly mounted on one end of the moving shaft, the first gear meshingly connected to the second gear, a third gear and a fourth gear fixedly mounted on the other end of the moving shaft, a fifth gear and a sixth gear fixedly mounted on the rotating shaft, the third gear meshingly connected to the sixth gear, the fourth gear meshingly connected to the fifth gear, and a stopper fixedly connected to one end of the moving shaft near the third gear.

[0011] Furthermore, the first pushing assembly includes a circular plate fixedly mounted on the DC motor body, a movable cavity opened on the circular plate, a second side plate fixedly connected to the inner wall of the heat dissipation box, a first sleeve fixedly connected to the second side plate, a first piston sealingly and slidably connected to the first sleeve, a first inner rod slidably connected to the first sleeve, one end of the first inner rod fixedly connected to the first piston, the other end of the first inner rod rotatably connected to the movable shaft, a connecting tube fixedly connected to the first sleeve, and an end of the connecting tube away from the first sleeve fixedly connected to the circular plate.

[0012] Further, the reciprocating component includes a tensioning assembly arranged on the connecting shaft, a second pushing assembly arranged on the tensioning assembly, a swinging assembly arranged on the tensioning assembly, a reset assembly arranged on the swinging assembly, and an extrusion assembly arranged on the heat dissipation box;

[0013] The tensioning assembly includes a tensioning sleeve fixedly connected to the connecting shaft, an L-shaped plate fixedly connected to the heat sink, a fixed shaft rotatably connected to the L-shaped plate, a second sleeve fixedly connected to the fixed shaft, a second inner rod limitedly slidably connected to the second sleeve, a fixed block fixedly connected to the second inner rod, a rotating rod rotatably connected to the fixed block and the second sleeve respectively, and a tensioning plate arranged in the tensioning sleeve, wherein the tensioning plate is rotatably connected to the rotating rod.

[0014] Furthermore, the second pushing assembly includes a second piston sealingly and slidably connected in the second sleeve, a limiting strip fixedly connected in the second sleeve, and a notch formed on the second piston, wherein the limiting strip sealingly and slidably connected in the notch.

[0015] Furthermore, the swing assembly includes a disc fixedly connected to a fixed shaft, a fixed column fixedly connected to a heat sink, a swing bar rotatably connected to the fixed column, a bar hole provided on the swing bar, a rotating rod limitedly slidably connected to the disc, the rotating rod slidably connected to the bar hole, and a swing rod slidably connected to the bar hole.

[0016] Furthermore, the reset assembly includes a reset groove opened on the disc, a moving block limitedly slidably connected in the reset groove, a rotating rod fixedly connected to the moving block, and a reset spring fixedly connected between the inner wall of the reset groove and the moving block.

[0017] Furthermore, the extrusion assembly includes a fixed seat fixedly connected to the heat sink, a slide groove opened on the fixed seat, a slider limitedly slidably connected in the slide groove, a swing rod fixedly connected to the slider, an extrusion rod slidably connected to one end of the slide groove, a third sleeve fixedly connected to the heat sink, a third piston sealingly slidably connected in the third sleeve, the extrusion rod fixedly connected to the third piston, an air inlet pipe fixedly connected to the third sleeve, the air inlet pipe is connected to the vacuum chamber at one end away from the third sleeve, a one-way air inlet valve fixedly connected to the air inlet pipe, an air outlet pipe fixedly connected to the third sleeve, and a one-way air outlet valve fixedly connected to the air outlet pipe.

[0018] Furthermore, the blocking component includes a blocking component arranged on the heat dissipation box, and a third pushing component arranged on the blocking component;

[0019] The blocking component comprises a blocking cylinder fixedly connected to the heat dissipation box, the blocking cylinder is communicated with the vacuum chamber, a blocking rod slidably connected in the blocking cylinder, and a blocking plate fixedly connected to the blocking rod.

[0020] Furthermore, the third pushing assembly includes a fourth sleeve fixedly connected to the heat dissipation box, a fourth piston sealingly and slidably connected in the fourth sleeve, a fourth inner rod slidably connected to the fourth sleeve, the fourth inner rod is fixedly connected to the fourth piston, a through hole is opened on the sealing cylinder, a pushing plate slidably connected in the through hole, one end of the pushing plate is fixedly connected to the sealing rod, and the other end of the pushing plate is fixedly connected to the fourth inner rod.

[0021] Beneficial effects of the present invention:

[0022] 1. The DC motor body is rotated to drive the rotating shaft to rotate, and the heat dissipation component is driven to rotate to dissipate the heat of the DC motor body. The vacuum chamber is sealed by a sealing component, and the vacuum chamber is evacuated by a reciprocating component to isolate the heat dissipation box from the external environment, thereby preventing the external environment temperature from rising and affecting the heat dissipation of the DC motor body. The heat dissipation component is pushed to move by the first pushing component, so that the heat dissipation component can dissipate the heat of the DC motor body more efficiently, thereby preventing the DC motor body from generating more heat and causing the heat dissipation effect of the DC motor body to deteriorate.

[0023] 2. Through the tensioning assembly, when the connecting shaft rotates, it drives the fixed shaft to rotate, and then drives the swinging assembly to swing, so that the extrusion assembly draws the vacuum chamber into a vacuum, and the second inner rod slides into the second sleeve, driving the fixed block to move close to the second sleeve, so that the rotating rod rotates downward, driving the tensioning plate to move toward the side of the second inner rod. At this time, the connecting shaft drives the tensioning sleeve to rotate, and the fixed shaft does not rotate. When the second inner rod moves toward the outside of the second sleeve, it drives the fixed block to move away from the second sleeve, so that the rotating rod rotates upward, driving the tensioning plate to move toward the tensioning sleeve, so that the tensioning plate is pressed against the inner wall of the tensioning sleeve, so that when the ambient temperature rises, the fixed shaft rotates, and when the ambient temperature decreases, the fixed shaft does not rotate, so that the device is more flexible to adjust, and the practicality of the device is enhanced.

[0024] 3. The rotating rod slides in the bar hole to drive the swing bar to swing. When the swing rod cannot swing normally, the swing bar will not swing, but at this time, the disc rotates normally, so that the moving block moves in the reset groove to squeeze the reset spring. When the moving block moves to the center of the disc, it drives the rotating rod to move to the center of the disc. When the disc rotates, it drives the rotating rod to rotate, so that the swing bar will not swing, so that the DC motor body can work normally when the device is dissipating heat, reducing energy consumption and making the device more energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure from a first viewing angle of the present invention;

[0026] Figure 2 is a schematic diagram of a second viewing angle stereoscopic structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the heat dissipation unit of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the heat dissipation assembly of the present invention;

[0030] Figure 6 It is a schematic structural diagram of the first pushing assembly of the present invention;

[0031] Figure 7 It is a schematic diagram of the structure of the reciprocating component of the present invention;

[0032] Figure 8 It is a schematic diagram of the structure of the tensioning assembly of the present invention;

[0033] Fig. 9 It is a schematic diagram of the structure of the implementation component of the present invention;

[0034] Fig.10 It is a schematic diagram of the structure of the swing assembly of the present invention;

[0035] Fig.11 It is a schematic diagram of the structure of the extrusion assembly of the present invention;

[0036] Fig.12 It is a schematic diagram of the cross-sectional structure of the blocking component of the present invention.

[0037] In the figure:

[0038] 1. Heat dissipation box; 11. DC motor body; 12. Rotating shaft; 13. Cooling chamber; 14. Vacuum chamber; 2. Heat dissipation assembly; 21. Connecting shaft; 22. Heat dissipation fan; 23. First gear; 24. First side plate; 25. Moving shaft; 26. Second gear; 27. Third gear; 28. Fourth gear; 29. ​​Fifth gear; 210. Sixth gear; 3. First pushing assembly; 31. Circular plate; 32. Movable chamber; 33. Second side plate; 34. First sleeve; 35. First piston; 36. First inner rod; 37. Connecting pipe; 4. Tensioning assembly; 41. Tensioning sleeve; 42. L-shaped plate; 43. Fixed shaft; 44. Second sleeve; 45. Second inner rod; 46. Tensioning plate; 47. Fixed block; 48. Rotating rod; 5. Second push assembly; 51. Second piston; 52. Limiting strip; 53. Notch; 6. Swing assembly; 61. Disc; 62. Fixed column; 63. Swing bar; 64. Bar hole; 65. Rotating rod; 66. Swing rod; 7. Reset assembly; 71. Reset groove; 72. Moving block; 73. Reset spring; 8. Extrusion assembly; 81. Fixed seat; 82. Slide groove; 83. Sliding block; 84. Extrusion rod; 85. Third sleeve; 86. Third piston; 87. Inlet pipe; 88. Outlet pipe; 9. Blocking assembly; 91. Blocking cylinder; 92. Blocking rod; 93. Blocking plate; 10. Third push assembly; 101. Fourth sleeve; 102. Fourth piston; 103. Fourth inner rod; 104. Through hole; 105. Push plate. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0040] Example 1, reference Figure 1-Figure 12, which is the first embodiment of the present invention, provides a DC motor with self-cooling and heat dissipation function, including a heat dissipation box 1, a DC motor body 11 fixedly connected in the heat dissipation box 1, a rotating shaft 12 rotatably connected to the DC motor body 11, a cooling chamber 13 provided in the heat dissipation box 1, a feed pipe and a discharge pipe fixedly connected to the heat dissipation box 1 and communicating with the cooling chamber 13, and a vacuum chamber 14 provided in the heat dissipation box 1, and also includes a heat dissipation unit installed on the heat dissipation box 1; the heat dissipation unit includes a heat dissipation component installed on the heat dissipation box 1, a reciprocating component installed on one side of the heat dissipation box 1, and a blocking component installed on the heat dissipation box 1; the heat dissipation component includes a heat dissipation component 2 installed in the heat dissipation box 1, and a first pusher installed on the heat dissipation component 2 Component 3; the heat dissipation component 2 includes a connecting shaft 21 rotatably connected to the heat dissipation box 1, a heat dissipation fan 22 and a first gear 23 fixedly mounted on the connecting shaft 21, a first side plate 24 fixedly connected to the inner wall of the heat dissipation box 1, a moving shaft 25 movably connected to the first side plate 24, a second gear 26 fixedly mounted on one end of the moving shaft 25, the first gear 23 meshingly connected with the second gear 26, a third gear 27 and a fourth gear 28 fixedly mounted on the other end of the moving shaft 25, a fifth gear 29 and a sixth gear 210 fixedly mounted on the rotating shaft 12, the third gear 27 meshingly connected with the sixth gear 210, the fourth gear 28 meshingly connected with the fifth gear 29, and a block fixedly connected to the end of the moving shaft 25 near the third gear 27.

[0041] Specifically, the feed pipe and the discharge pipe are connected to the outlet and the inlet of the coolant tank respectively, the coolant in the coolant tank enters the cooling cavity 13 from the discharge pipe, and the coolant in the cooling cavity 13 enters the coolant tank from the discharge pipe, so as to keep the heat dissipation box 1 in a low temperature environment. The DC motor body 11 rotates, driving the rotating shaft 12 to rotate, driving the heat dissipation component to rotate, and dissipating the heat of the DC motor body 11. The vacuum chamber 14 is blocked by the blocking component, and the vacuum chamber 14 is evacuated by the reciprocating component, so that the heat dissipation box 1 is isolated from the external environment, so as to avoid the increase of the external environment temperature and the influence on the heat dissipation of the DC motor body 11. The heat dissipation component 2 is pushed to move by the first pushing component 3, so that the heat dissipation component 2 can dissipate the heat of the DC motor body 11 more efficiently, so as to avoid the increase of the heat generation of the DC motor body 11 and the deterioration of the heat dissipation effect of the DC motor body 11. The rotating shaft 12 rotates, driving the fifth gear 29 and the sixth gear 210 to rotate. When the fifth gear 29 is engaged with the fourth gear 28, the fifth gear 29 drives the fourth gear 28 to rotate, driving the moving shaft 25 The first gear 23 is rotated, driving the second gear 26 to rotate, driving the first gear 23 to rotate, driving the connecting shaft 21 to rotate, driving the cooling fan 22 to rotate, so that the gas in the heat dissipation box 1 flows, and the DC motor body 11 is cooled. When the heat generated by the DC motor body 11 increases, the first pushing component 3 is used to push the moving shaft 25 to move, driving the third gear 27 and the fourth gear 28 to move, so that the fourth gear 28 is separated from the fifth gear 29, and the third gear 27 is meshed with the sixth gear 210. Since the diameter of the sixth gear 210 is larger than that of the third gear 27, and the number of teeth is more than that of the third gear 27, when the sixth gear 210 drives the third gear 27 to rotate, the third gear 27 rotates faster than the sixth gear 210, driving the moving shaft 25 to rotate faster, driving the second gear 26 to rotate faster, and when the moving shaft 25 moves, the second gear 26 slides on the first gear 23, driving the first gear 23 to rotate, driving the cooling fan 22 to rotate faster, so that the gas in the heat dissipation box 1 flows faster, and the heat dissipation of the DC motor body 11 is enhanced.

[0042] Reference Figure 6 The first pushing assembly 3 includes a circular plate 31 fixedly sleeved on the DC motor body 11, an active cavity 32 opened on the circular plate 31, a second side plate 33 fixedly connected to the inner wall of the heat dissipation box 1, a first sleeve 34 fixedly connected to the second side plate 33, a first piston 35 sealingly and slidably connected in the first sleeve 34, a first inner rod 36 slidably connected to the first sleeve 34, one end of the first inner rod 36 is fixedly connected to the first piston 35, the other end of the first inner rod 36 is rotatably connected to the movable shaft 25, and a connecting pipe 37 fixedly connected to the first sleeve 34, and one end of the connecting pipe 37 away from the first sleeve 34 is fixedly connected to the circular plate 31.

[0043] Specifically, when the DC motor body 11 generates heat, the temperature of the annular plate 31 increases, and the temperature of the gas in the active chamber 32 increases. The increased temperature of the gas expands due to the heat, and the gas in the active chamber 32 flows into the connecting pipe 37 and enters the first sleeve 34. Since the first piston 35 and the first sleeve 34 are in a sealed sliding connection, the first piston 35 is driven to move in the first sleeve 34, the first inner rod 36 is driven to move, and the movable shaft 25 is driven to move. When the heat generated by the DC motor body 11 decreases, the temperature of the annular plate 31 decreases, the temperature of the gas in the active chamber 32 decreases, the gas shrinks, and the gas in the first sleeve 34 enters the active chamber 32 from the connecting pipe 37, so that the first piston 35 slides into the first sleeve 34, and the movable shaft 25 is driven to move back and forth.

[0044] Example 2, reference Figure 7-Figure 11 , is the second embodiment of the present invention, which is different from the first embodiment in that: the reciprocating component includes a tensioning assembly 4 installed on the connecting shaft 21, a second pushing assembly 5 installed on the tensioning assembly 4, a swinging assembly 6 installed on the tensioning assembly 4, a reset assembly 7 installed on the swinging assembly 6, and an extrusion assembly 8 installed on the heat sink 1; the tensioning assembly 4 includes a tensioning sleeve 41 fixedly connected to the connecting shaft 21, an L-shaped plate 42 fixedly connected to the heat sink 1, a fixed shaft 43 rotatably connected to the L-shaped plate 42, a second sleeve 44 fixedly connected to the fixed shaft 43, a second inner rod 45 limitedly slidably connected to the second sleeve 44, a fixed block 47 fixedly connected to the second inner rod 45, a rotating rod 48 rotatably connected to the fixed block 47 and the second sleeve 44 respectively, a tensioning plate 46 arranged in the tensioning sleeve 41, and the tensioning plate 46 is rotatably connected to the rotating rod 48.

[0045] Specifically, through the tensioning assembly 4, when the connecting shaft 21 rotates, the fixed shaft 43 is driven to rotate, and then the swing assembly 6 is driven to swing, so that the extrusion assembly 8 draws the vacuum chamber 14 into a vacuum, and the second inner rod 45 slides into the second sleeve 44, driving the fixed block 47 to move close to the second sleeve 44, so that the rotating rod 48 rotates downward, driving the tensioning plate 46 to move toward the side of the second inner rod 45. At this time, the connecting shaft 21 drives the tensioning sleeve 41 to rotate, and the fixed shaft 43 does not rotate. When the connecting shaft 21 moves toward the outside of the second sleeve 44, the fixing block 47 moves away from the second sleeve 44, so that the rotating rod 48 rotates upward, and the tensioning plate 46 moves toward the tensioning sleeve 41, so that the tensioning plate 46 and the inner wall of the tensioning sleeve 41 are pressed tightly. At this time, the connecting shaft 21 drives the tensioning sleeve 41 to rotate. Since the tensioning plate 46 and the inner wall of the tensioning sleeve 41 are pressed tightly, the tensioning plate 46 is driven to rotate, the rotating rod 48 is driven to rotate, the fixing block 47 and the second sleeve 44 are driven to rotate, and the fixing shaft 43 is driven to rotate.

[0046] Reference Fig. 9The second pushing assembly 5 includes a second piston 51 sealingly and slidably connected in the second sleeve 44 , a limiting strip 52 fixedly connected in the second sleeve 44 , and a notch 53 provided on the second piston 51 , and the limiting strip 52 sealingly and slidably connected in the notch 53 .

[0047] Specifically, when the temperature of the external environment is high, the temperature of the gas in the second sleeve 44 increases, and the thermal expansion drives the second piston 51 to move, driving the second inner rod 45 to move toward the outside of the second sleeve 44, and driving the fixed block 47 to move away from the second sleeve 44. When the temperature of the external environment decreases, the gas in the second sleeve 44 contracts, causing the second piston 51 to move toward the inside of the second sleeve 44. When the temperature of the external environment is high, the connecting shaft 21 rotates, driving the fixed shaft 43 to rotate. When the temperature of the external environment decreases, the connecting shaft 21 rotates, and the fixed shaft 43 does not rotate.

[0048] Reference Fig.10 The swing assembly 6 includes a disc 61 fixedly connected to the fixed shaft 43, a fixed column 62 fixedly connected to the heat sink 1, a swing bar 63 rotatably connected to the fixed column 62, a bar hole 64 opened on the swing bar 63, a rotating rod 65 limitedly slidably connected to the disc 61, the rotating rod 65 is slidably connected to the bar hole 64, and a swing rod 66 slidably connected to the bar hole 64.

[0049] Specifically, when the fixed shaft 43 rotates, the disk 61 is driven to rotate, the rotating rod 65 is driven to rotate, and the swing bar 63 is driven to swing under the action of the bar hole 64, so that the swing rod 66 slides in the bar hole 64, driving the swing rod 66 to swing left and right.

[0050] Reference Fig.10 The reset assembly 7 includes a reset groove 71 opened on the disc 61, a moving block 72 limitedly slidably connected in the reset groove 71, a rotating rod 65 fixedly connected to the moving block 72, and a reset spring 73 fixedly connected between the inner wall of the reset groove 71 and the moving block 72.

[0051] Specifically, when the swing rod 66 can swing normally, the rotating rod 65 slides in the bar hole 64, driving the swing bar 63 to swing. When the swing rod 66 cannot swing normally, the swing bar 63 will not be able to swing, but at this time, the disk 61 rotates normally, so that the moving block 72 moves in the reset groove 71, squeezing the reset spring 73. When the moving block 72 moves to the center of the disk 61, it drives the rotating rod 65 to move to the center of the disk 61. When the disk 61 rotates, it drives the rotating rod 65 to rotate, so that the swing bar 63 does not swing.

[0052] Reference Fig.11The extrusion assembly 8 includes a fixed seat 81 fixedly connected to the heat sink 1, a slide groove 82 opened on the fixed seat 81, a slider 83 limitedly slidably connected in the slide groove 82, a swing rod 66 fixedly connected to the slider 83, an extrusion rod 84 slidably connected to one end of the slide groove 82, a third sleeve 85 fixedly connected to the heat sink 1, a third piston 86 sealingly slidably connected in the third sleeve 85, the extrusion rod 84 is fixedly connected to the third piston 86, an air inlet pipe 87 fixedly connected to the third sleeve 85, the air inlet pipe 87 is connected to the vacuum chamber 14 at one end away from the third sleeve 85, a one-way air inlet valve fixedly connected to the air inlet pipe 87, an air outlet pipe 88 fixedly connected to the third sleeve 85, and a one-way air outlet valve fixedly connected to the air outlet pipe 88.

[0053] Specifically, when the swing rod 66 swings left and right, it drives the slider 83 to slide left and right in the slide groove 82, drives the extrusion rod 84 to move left and right, drives the third piston 86 to slide left and right in the third sleeve 85, and under the action of the one-way air inlet valve and the one-way air outlet valve, the gas in the vacuum chamber 14 enters the third sleeve 85, and the gas in the third sleeve 85 is discharged from the air outlet pipe 88, and the vacuum chamber 14 is evacuated. The rest of the structure is the same as that of Example 1.

[0054] Example 3, reference Fig.12 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: the sealing component includes a sealing component 9 installed on the heat dissipation box 1, and a third pushing component 10 installed on the sealing component 9; the sealing component 9 includes a sealing cylinder 91 fixedly connected to the heat dissipation box 1, the sealing cylinder 91 is connected to the vacuum chamber 14, a sealing rod 92 slidably connected to the sealing cylinder 91, and a sealing plate 93 fixedly connected to the sealing rod 92.

[0055] Specifically, the third pushing component 10 pushes the sealing component 9 to seal the vacuum chamber 14 , and the sealing rod 92 moves in the sealing tube 91 , driving the sealing plate 93 to move, thereby sealing one end of the sealing tube 91 , so that external gas does not enter the vacuum chamber 14 .

[0056] Reference Fig.12 The third pushing assembly 10 includes a fourth sleeve 101 fixedly connected to the heat dissipation box 1, a fourth piston 102 sealingly and slidably connected in the fourth sleeve 101, a fourth inner rod 103 slidably connected to the fourth sleeve 101, the fourth inner rod 103 is fixedly connected to the fourth piston 102, a through hole 104 is opened on the blocking cylinder 91, and a pushing plate 105 slidably connected in the through hole 104, one end of the pushing plate 105 is fixedly connected to the blocking rod 92, and the other end of the pushing plate 105 is fixedly connected to the fourth inner rod 103.

[0057] Specifically, when the temperature of the external environment increases, the gas in the fourth sleeve 101 expands due to heat, pushing the fourth piston 102 to move, driving the fourth inner rod 103 to move, so that the push plate 105 slides in the through hole 104, driving the blocking rod 92 to move out of the fourth sleeve 101, and sealing the vacuum chamber 14. When the temperature of the external environment decreases, the gas in the fourth sleeve 101 contracts, driving the fourth inner rod 103 to move into the fourth sleeve 101, driving the blocking rod 92 to move into the vacuum chamber 14, and opening the vacuum chamber 14. The remaining structure is the same as that of Example 2.

[0058] In summary, the working principle of the present invention is as follows: when in use, when the heat generated by the DC motor body 11 increases, the first pushing component 3 is used to push the movable shaft 25 to move, thereby driving the third gear 27 and the fourth gear 28 to move, so that the fourth gear 28 is separated from the fifth gear 29, and the third gear 27 is meshed with the sixth gear 210. Since the diameter of the sixth gear 210 is larger than that of the third gear 27 and the number of teeth is greater than that of the third gear 27, the rotation speed of the third gear 27 is faster than that of the sixth gear 210, thereby driving the cooling fan 22 to rotate faster, thereby improving the heat dissipation effect of the DC motor body 11.

[0059] When the external environment temperature rises, in order not to affect the normal heat dissipation of the DC motor body 11, the vacuum chamber 14 is blocked by the blocking component 9, and the fixed block 47 is moved away from the second sleeve 44 by the second pushing component 5, so that the rotating rod 48 rotates upward, so that the tensioning plate 46 is pressed against the inner wall of the tensioning sleeve 41, and when the connecting shaft 21 rotates, it drives the tensioning sleeve 41 to rotate, and then drives the fixed shaft 43 to rotate, drives the disk 61 to rotate, drives the rotating rod 65 to rotate, and drives the swing bar 63 to swing , driving the swing rod 66 to swing left and right, so that the slider 83 slides left and right in the slide groove 82, and the vacuum chamber 14 is evacuated. When the vacuum chamber 14 is evacuated, the third piston 86 will not be able to slide left and right in the third sleeve 85, so that the swing rod 66 stops swinging left and right, and the swing bar 63 stops swinging left and right, so that the moving block 72 slides in the reset groove 71. When the moving block 72 slides to the center of the disk 61, the disk 61 rotates, driving the rotating rod 65 to rotate, and will no longer drive the swing bar 63 to swing.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A DC motor with self-cooling and heat dissipation function, comprising a heat dissipation box (1), a DC motor body (11) arranged in the heat dissipation box (1), a rotating shaft (12) arranged on the DC motor body (11), a cooling chamber (13) arranged on the heat dissipation box (1), a feed pipe and a discharge pipe arranged on the heat dissipation box (1) and communicating with the cooling chamber (13), and a vacuum chamber (14) arranged on the heat dissipation box (1), characterized in that: It also includes a heat dissipation unit arranged on the heat dissipation box (1); The heat dissipation unit comprises a heat dissipation component arranged on a heat dissipation box (1), a reciprocating component arranged on one side of the heat dissipation box (1), and a blocking component arranged on the heat dissipation box (1); the heat dissipation component comprises a heat dissipation component (2) arranged in the heat dissipation box (1), and a first pushing component (3) arranged on the heat dissipation component (2); The heat dissipation assembly (2) comprises a connecting shaft (21) rotatably connected to the heat dissipation box (1), a heat dissipation fan (22) and a first gear (23) fixedly sleeved on the connecting shaft (21), a first side plate (24) fixedly connected to the inner wall of the heat dissipation box (1), a moving shaft (25) movably connected to the first side plate (24), a second gear (26) fixedly sleeved on one end of the moving shaft (25), the first gear (23) meshingly connected with the second gear (26), a third gear (27) and a fourth gear (28) fixedly sleeved on the other end of the moving shaft (25), a fifth gear (29) and a sixth gear (210) fixedly sleeved on the rotating shaft (12), the third gear (27) meshingly connected with the sixth gear (210), the fourth gear (28) meshingly connected with the fifth gear (29), and a stopper fixedly connected to one end of the moving shaft (25) close to the third gear (27).

2. The DC motor with self-cooling and heat dissipation function according to claim 1 is characterized in that: The first pushing assembly (3) comprises a circular plate (31) fixedly sleeved on the DC motor body (11), a movable cavity (32) provided on the circular plate (31), a second side plate (33) fixedly connected to the inner wall of the heat dissipation box (1), a first sleeve (34) fixedly connected to the second side plate (33), a first piston (35) sealingly slidably connected to the first sleeve (34), a first inner rod (36) slidably connected to the first sleeve (34), one end of the first inner rod (36) fixedly connected to the first piston (35), the other end of the first inner rod (36) rotatably connected to the movable shaft (25), and a connecting pipe (37) fixedly connected to the first sleeve (34), the end of the connecting pipe (37) away from the first sleeve (34) fixedly connected to the circular plate (31).

3. The DC motor with self-cooling and heat dissipation function according to claim 1 is characterized in that: The reciprocating component comprises a tensioning assembly (4) arranged on the connecting shaft (21), a second pushing assembly (5) arranged on the tensioning assembly (4), a swinging assembly (6) arranged on the tensioning assembly (4), a reset assembly (7) arranged on the swinging assembly (6), and an extrusion assembly (8) arranged on the heat sink (1); The tensioning assembly (4) comprises a tensioning sleeve (41) fixedly connected to the connecting shaft (21), an L-shaped plate (42) fixedly connected to the heat sink (1), a fixed shaft (43) rotatably connected to the L-shaped plate (42), a second sleeve (44) fixedly connected to the fixed shaft (43), a second inner rod (45) slidably connected to the second sleeve (44), a fixed block (47) fixedly connected to the second inner rod (45), a rotating rod (48) rotatably connected to the fixed block (47) and the second sleeve (44), and a tensioning plate (46) disposed in the tensioning sleeve (41), wherein the tensioning plate (46) is rotatably connected to the rotating rod (48).

4. The DC motor with self-cooling and heat dissipation function according to claim 3 is characterized in that: The second pushing assembly (5) comprises a second piston (51) sealingly and slidably connected in the second sleeve (44), a limiting strip (52) fixedly connected in the second sleeve (44), and a notch (53) formed on the second piston (51), wherein the limiting strip (52) is sealingly and slidably connected in the notch (53).

5. The DC motor with self-cooling and heat dissipation function according to claim 3 is characterized in that: The swing assembly (6) comprises a disk (61) fixedly connected to a fixed shaft (43), a fixed column (62) fixedly connected to a heat sink (1), a swing bar (63) rotatably connected to the fixed column (62), a bar hole (64) provided on the swing bar (63), a rotating rod (65) limitedly slidably connected to the disk (61), the rotating rod (65) slidably connected to the bar hole (64), and a swing rod (66) slidably connected to the bar hole (64).

6. The DC motor with self-cooling and heat dissipation function according to claim 5, characterized in that: The reset assembly (7) comprises a reset groove (71) formed on the disc (61), a moving block (72) limitedly slidably connected in the reset groove (71), a rotating rod (65) fixedly connected to the moving block (72), and a reset spring (73) fixedly connected between the inner wall of the reset groove (71) and the moving block (72).

7. The DC motor with self-cooling and heat dissipation function according to claim 5, characterized in that: The extrusion assembly (8) comprises a fixed seat (81) fixedly connected to the heat dissipation box (1), a slide groove (82) provided on the fixed seat (81), a slider (83) limitedly slidably connected in the slide groove (82), a swing rod (66) fixedly connected to the slider (83), an extrusion rod (84) slidably connected to one end of the slide groove (82), a third sleeve (85) fixedly connected to the heat dissipation box (1), a third piston (86) sealingly slidably connected in the third sleeve (85), the extrusion rod (84) and the third piston (86) fixedly connected, an air inlet pipe (87) fixedly connected to the third sleeve (85), one end of the air inlet pipe (87) away from the third sleeve (85) being connected to the vacuum chamber (14), a one-way air inlet valve fixedly connected to the air inlet pipe (87), an air outlet pipe (88) fixedly connected to the third sleeve (85), and a one-way air outlet valve fixedly connected to the air outlet pipe (88).

8. The DC motor with self-cooling and heat dissipation function according to claim 1, characterized in that: The blocking component comprises a blocking component (9) arranged on the heat dissipation box (1), and a third pushing component (10) arranged on the blocking component (9); The blocking assembly (9) comprises a blocking cylinder (91) fixedly connected to the heat dissipation box (1), the blocking cylinder (91) being in communication with the vacuum chamber (14), a blocking rod (92) slidably connected to the blocking cylinder (91), and a blocking plate (93) fixedly connected to the blocking rod (92).

9. The DC motor with self-cooling and heat dissipation function according to claim 8, characterized in that: The third pushing assembly (10) comprises a fourth sleeve (101) fixedly connected to the heat dissipation box (1), a fourth piston (102) sealingly and slidably connected in the fourth sleeve (101), a fourth inner rod (103) slidably connected to the fourth sleeve (101), the fourth inner rod (103) being fixedly connected to the fourth piston (102), a through hole (104) provided in the blocking cylinder (91), a pushing plate (105) slidably connected in the through hole (104), one end of the pushing plate (105) being fixedly connected to the blocking rod (92), and the other end of the pushing plate (105) being fixedly connected to the fourth inner rod (103).

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