Motor fan and motor

Abstract

The motor fan comprises a rotating disc, first fan blades, second fan blades and a telescopic structure, the first fan blades are arranged on one face of the rotating disc in an annular array mode, and a telescopic groove is formed in the rotating disc; the telescopic structure comprises a first spring, a push block and an arc-shaped sliding block, two ends of the first spring are respectively connected with one end, close to the middle of the turntable, of the telescopic groove and the push block, an arc-shaped extrusion block is arranged in the telescopic groove opposite to one side, back to the first spring, of the push block, one end of the arc-shaped sliding block is movably connected with the push block, and the other end is connected with a second fan blade; a limiting hole is formed in the arc-shaped sliding block, and a limiting shaft penetrating through the limiting hole is horizontally arranged in the push block and the telescopic groove. According to the motor fan and the motor, the ventilation quantity of the motor fan can be conveniently and flexibly adjusted according to actual heat dissipation requirements, and a better heat dissipation effect is achieved.

Description

Technical Field

[0001] The present invention relates to the field of motors, and in particular to a motor fan and a motor. Background Art

[0002] The motor fan is one of the commonly used components of the motor and is used for motor heat dissipation. During actual use, different working conditions and working environments will affect the degree of heat generation of the motor. The existing motor fan is generally an integral structure with a fixed number of fan blades. The ventilation volume mainly depends on the speed of the motor fan, and it is difficult to flexibly adjust the ventilation volume according to actual heat dissipation needs. Summary of the invention

[0003] In view of the above problems, the present invention provides a motor fan and a motor, which facilitates flexible adjustment of the ventilation volume of the motor fan according to actual heat dissipation requirements to achieve better heat dissipation effect.

[0004] The technical solution of the present invention is as follows:

[0005] The cam is an axially axially axially axially axially axially axially axially axially traverses the first and second blades, wherein the axially axially axially axially traverses the second blades and the second blades are axially axially axially traverse the second blades.

[0006] In a further technical solution, a receiving groove for receiving the second fan blade is provided on a side of the arc-shaped sliding block away from the push block.

[0007] In a further technical solution, the push block abuts against the arc-shaped sliding block.

[0008] In a further technical solution, one end of the arc-shaped sliding block abutting against the push block is in an arc shape.

[0009] In a further technical solution, the push block is hinged to the arc-shaped sliding block.

[0010] In a further technical solution, the turntable includes an upper disk body and a lower disk body, and after the upper disk body and the lower disk body are combined, an adjustment cavity is formed in the middle; the first fan blade and the telescopic slot are arranged on the upper disk body; an adjustment hole connected to the adjustment cavity is opened on the upper disk body corresponding to the first fan blade, and the adjustment hole is a radially arranged strip hole, and an adjustment plate is arranged inside, and the adjustment plate is rotatably connected to the adjustment hole on both sides of the end portion corresponding to the adjustment hole, and an adjustment gap is left between the long sides of the adjustment plate corresponding to the adjustment hole and the adjustment hole; a shift block is arranged on the side of the adjustment plate facing the adjustment cavity, and a movable part for shifting the shift block is arranged in the adjustment cavity.

[0011] In a further technical solution, the movable part includes a dial, a first shaft, a second shaft, a first bevel gear, a second bevel gear and a turning handle. The first shaft is rotatably arranged in the middle of the inner side of the lower disk, the dial is arranged at the end of the first shaft, and the edge ring array of the dial has a number of paddles corresponding to the number of dial blocks; the first bevel gear is sleeved on the first shaft, a through hole is opened on the side wall of the lower disk, the second shaft is rotatably penetrated through the through hole, the second bevel gear is arranged at one end of the second shaft and meshed with the first bevel gear, the turning handle is arranged at the other end of the second shaft, and a locking structure is provided between the lower disk and the turning handle.

[0012] In a further technical solution, the locking structure includes locking block one and locking block two, a movable groove is provided on one side of the turning handle connected to the second axis, the locking block one is arranged in the movable groove, the end of the second axis connected to the turning handle is provided with locking groove one matching locking block one, the locking block two is arranged on the outer wall of the turning handle, and the inner wall of the through hole is provided with locking groove two matching locking block two.

[0013] In a further technical solution, a second spring connecting the end of the second shaft and the handle is provided in the movable groove.

[0014] The present invention also provides a motor, comprising the motor fan described in any one of the above items.

[0015] The beneficial effects of the present invention are:

[0016] 1. The motor fan is installed on the main shaft of the motor. Under normal circumstances, the first fan blade is the main working part, providing ventilation and heat dissipation for the motor. When the motor speed increases, the motor fan speed increases accordingly, and the centrifugal force on the push block gradually exceeds the elastic force of the first spring, pushing the arc-shaped slider to slide relative to the arc-shaped extrusion block, thereby gradually pushing out the second fan blade in the telescopic slot; the higher the motor speed, the higher the fan heat demand, and the more the second fan blade is pushed out, the larger the area in contact with the air, and the greater the ventilation volume; it is convenient to flexibly adjust the ventilation volume of the motor fan according to the actual heat dissipation needs to achieve better heat dissipation effect;

[0017] 2. The second shaft can be rotated by turning the handle, and the first shaft can be driven to rotate by the second bevel gear meshing with the first bevel gear. When the first shaft rotates, the paddles around the dial can move the paddle block, so that the adjustment plate deflects in the adjustment hole, so that the first fan blade changes its angle, thereby changing the ventilation volume, further improving the flexibility of adjustment;

[0018] 3. After adjusting the second shaft, the locking block 2 of the handle can be inserted into the corresponding locking groove 2 to lock the second shaft, thereby preventing the first fan blade from shaking during the rotation of the motor fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic top view of a motor fan according to an embodiment of the present invention;

[0020] Figure 2 It is a cross-sectional schematic diagram of the push block of the telescopic slot part and the arc-shaped sliding block abutting against each other according to the embodiment of the present invention;

[0021] Figure 3 It is a cross-sectional schematic diagram of the hinged connection between the push block of the telescopic slot part and the arc-shaped sliding block according to the embodiment of the present invention;

[0022] Figure 4 is a cross-sectional schematic diagram of a motor fan according to an embodiment of the present invention;

[0023] Figure 5 is a schematic top view of a dial according to an embodiment of the present invention;

[0024] Figure 6 It is a schematic structural diagram of the turning handle described in an embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 10. Turntable; 11. Telescopic slot; 12. Limiting shaft; 13. Upper plate; 14. Lower plate; 15. Adjusting cavity; 16. Adjusting hole; 17. Adjusting plate; 18. Paddle block; 20. First blade; 30. Second blade; 41. First spring; 42. Push block; 43. Arc-shaped slider; 44. Arc-shaped extrusion block; 45. Limiting hole; 46. Accommodating slot; 51. Turntable; 52. First shaft; 53. Second shaft; 54. First bevel gear; 55. Second bevel gear; 56. Turning handle; 57. Paddle; 58. Locking slot one; 59. Second spring; 60. Locking block two. DETAILED DESCRIPTION

[0027] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0028] Example:

[0029] like Figure 1-Figure 2As shown, a motor fan comprises a turntable 10, a first fan blade 20, a second fan blade 30 and a telescopic structure, wherein the first fan blade 20 is arranged in a ring array on one side of the turntable 10, and a telescopic slot 11 is opened on the turntable 10 between the first fan blades 20; the telescopic structure comprises a first spring 41, a push block 42, and an arc-shaped slider 43, wherein the two ends of the first spring 41 are respectively connected to an end of the telescopic slot 11 close to the middle of the turntable 10 and the push block 42, and an arc-shaped extrusion block 44 matching the convex surface of the arc-shaped slider 43 is arranged in the telescopic slot 11 opposite to the side of the push block 42 facing away from the first spring 41, and the convex surface of the arc-shaped slider 43 slides The arc-shaped extrusion block 44 is connected, and one end of the arc-shaped slider 43 abutting against the push block 42 is in an arc shape; one end of the arc-shaped slider 43 abuts against the push block 42, and the other end is connected to the second fan blade 30; the arc-shaped slider 43 is provided with an arc-shaped long strip limiting hole 45 in the horizontal direction, and a limiting shaft 12 passing through the limiting hole 45 is horizontally provided in the telescopic groove 11 between the push block 42 and the arc-shaped extrusion block 44. When the limiting shaft 12 is respectively at the two ends of the limiting hole 45, the second fan blade 30 is respectively located in the limiting groove and outside the limiting groove; the side of the arc-shaped slider 43 away from the push block 42 is provided with an accommodating groove 46 for accommodating the second fan blade 30.

[0030] The working principle of the above technical solution is as follows:

[0031] The motor fan rotates with the motor main shaft. During the rotation, the push block 42 in the telescopic slot 11 is acted upon by centrifugal force. When the centrifugal force is greater than the elastic force of the spring, the push block 42 gradually pushes the arc-shaped slider 43 to slide relative to the arc-shaped extrusion block 44. During the sliding process, the limit hole 45 moves relative to the limit shaft 12, while maintaining smooth sliding. During the sliding process, the second fan blade 30 is gradually pushed out of the telescopic slot 11. The pushed-out second fan blade 30 increases the contact area between the motor fan and the air. The faster the motor fan rotates, the larger the contact area with the air within the active range of the second fan blade 30, and the greater the ventilation volume.

[0032] In another embodiment, if Figure 3 As shown, the difference from the previous embodiment is that the push block 42 is hinged to the arc-shaped sliding block 43.

[0033] The push block 42 is stably connected to the arc-shaped slide block 43 and is not easily separated.

[0034] In another embodiment, if Figure 4-6As shown, the turntable 10 includes an upper disk body 13 and a lower disk body 14. After the upper disk body 13 and the lower disk body 14 are combined, an adjustment cavity 15 is formed in the middle; the first fan blade 20 and the telescopic slot 11 are arranged on the upper disk body 13; an adjustment hole 16 connected to the adjustment cavity 15 is opened on the upper disk body 13 corresponding to the first fan blade 20. The adjustment hole 16 is a radially arranged strip hole, and an adjustment plate 17 is arranged inside. The adjustment plate 17 is rotatably connected to the adjustment hole 16 at both sides of the end corresponding to the adjustment hole 16, and the adjustment plate 17 is connected to the adjustment hole 16. There should be an adjustment gap between the long sides of the adjustment cavity and the adjustment hole 16; a shift block 18 is provided on the side of the adjustment plate 17 facing the adjustment cavity 15, and a movable component for shifting the shift block 18 is provided in the adjustment cavity 15; the movable component includes a dial 51, a first shaft 52, a second shaft 53, a first bevel gear 54, a second bevel gear 55 and a handle 56, the first shaft 52 is rotatably arranged in the middle of the inner side of the lower plate 14, the dial 51 is arranged at the end of the first shaft 52, and the edge of the dial 51 is annularly arrayed There are paddles 57 corresponding to the number of paddle blocks 18; the first bevel gear 54 is sleeved on the first shaft 52, a through hole is opened on the side wall of the lower plate 14, the second shaft 53 is rotatably penetrated at the through hole, a bearing can be set at the through hole to connect the second shaft 53, the second bevel gear 55 is arranged at one end of the second shaft 53, and meshes with the first bevel gear 54, a handle 56 is arranged at the other end of the second shaft 53, and a locking structure is arranged between the lower plate 14 and the handle 56; the locking structure includes a locking block and A locking block 2 60 is provided, and a movable groove is provided on one side of the turning handle 56 connected to the second shaft body 53. The locking block 1 is provided in the movable groove. A locking groove 1 58 matching the locking block 1 is provided at the end of the second shaft body 53 connected to the turning handle 56. The locking block 2 60 is provided on the outer wall of the turning handle 56, and a plurality of locking grooves 2 matching the locking block 2 60 are provided on the inner wall of the through hole. Among them, an insert for stabilizing the rotation of the motor fan can be added to the adjustment cavity 15 according to actual use to reduce the shaking caused by the setting of the movable parts.

[0035] The upper plate body 13 and the lower plate body 14 can be connected in a variety of detachable ways such as riveting and bolting; when adjusting the angle of the first fan blade 20, the locking block is pulled out of the through hole along the axial direction of the second shaft body 53 until the locking block 2 60 is disengaged from the locking groove 2, and the locking block 1 and the locking groove 1 58 prevent the handle 56 from rotating relative to the second shaft body 53; after pulling out, the handle 56 is rotated to drive the second shaft body 53 to rotate, and the second bevel gear 55 engages with the first bevel gear 54 to rotate, thereby rotating the first shaft body 52 and the dial 51 thereon, and the paddle 57 on the dial 51 squeezes the paddle block 18 to deflect to one side, so that the adjustment plate 17 rotates and changes the angle within the range of the adjustment hole 16, and finally changes the angle of the first fan blade 20, so as to further adjust the ventilation volume of the motor fan; after the adjustment is completed, the locking block 2 60 of the handle 56 is restored to the locking groove 2 opposite to the rotation, so as to prevent the motor fan from rotating when working.

[0036] In another embodiment, if Figure 4As shown, a second spring 59 connecting the end of the second shaft 53 and the handle 56 is provided in the movable groove.

[0037] After rotating the handle 56, the locking block 60 is aligned with the corresponding locking groove 2, and the second spring 59 can rebound to pull the handle 56 back into the through hole, so that it is not easy to get out of the through hole when the motor fan is working.

[0038] In addition, the motor provided by the present invention using the above-mentioned motor fan facilitates the motor to flexibly change the ventilation volume at different speeds in different working environments, thereby providing a stable heat dissipation effect for the motor.

[0039] The above-mentioned embodiments only express the specific implementation of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A motor fan, characterized in that: The telescopic structure comprises a rotating disk, a first fan blade, a second fan blade and a telescopic structure, wherein the first fan blade is arranged on one side of the rotating disk in an annular array, and a telescopic slot is provided on the rotating disk between the first fan blades; the telescopic structure comprises a first spring, a push block, and an arc-shaped sliding block, wherein two ends of the first spring are respectively connected to one end of the telescopic slot close to the middle of the rotating disk and the push block, an arc-shaped extrusion block matching the convex surface of the arc-shaped sliding block is provided in the telescopic slot opposite to the side of the push block facing away from the first spring, the convex surface of the arc-shaped sliding block is slidably connected to the arc-shaped extrusion block, one end of the arc-shaped sliding block is movably connected to the push block, and the other end is connected to the second fan blade; an arc-shaped limiting hole is provided in the horizontal direction of the arc-shaped sliding block, and a limiting shaft passing through the limiting hole is horizontally provided in the telescopic slot between the push block and the arc-shaped extrusion block, and when the limiting shaft is respectively at the two ends of the limiting hole, the second fan blade is respectively located in the limiting slot and outside the limiting slot.

2. A motor fan according to claim 1, characterized in that: A receiving groove for receiving the second fan blade is provided on one side of the arc-shaped sliding block away from the pushing block.

3. The motor fan according to claim 1, characterized in that: The push block abuts against the arc-shaped sliding block.

4. The motor fan according to claim 1, characterized in that: One end of the arc-shaped sliding block abutting against the push block is in an arc shape.

5. The motor fan according to claim 4, characterized in that: The push block is hinged to the arc-shaped sliding block.

6. The motor fan according to claim 1, characterized in that: The turntable includes an upper disk body and a lower disk body. After the upper disk body and the lower disk body are combined, an adjustment cavity is formed in the middle; the first fan blade and the telescopic slot are arranged on the upper disk body; an adjustment hole connected to the adjustment cavity is opened on the upper disk body corresponding to the first fan blade, and the adjustment hole is a radially arranged strip hole, and an adjustment plate is arranged inside, and the end sides of the adjustment plate corresponding to the adjustment hole are rotatably connected to the adjustment hole, and an adjustment gap is left between the two sides of the long side of the adjustment plate corresponding to the adjustment hole and the adjustment hole; a shift block is arranged on the side of the adjustment plate facing the adjustment cavity, and a movable component for shifting the shift block is arranged in the adjustment cavity.

7. The motor fan according to claim 6, characterized in that: The movable component includes a dial, a first shaft, a second shaft, a first bevel gear, a second bevel gear and a turning handle. The first shaft is rotatably arranged in the middle of the inner side of the lower disk, the dial is arranged at the end of the first shaft, and the edge ring array of the dial has a number of paddles corresponding to the number of paddle blocks; the first bevel gear is sleeved on the first shaft, a through hole is opened on the side wall of the lower disk, the second shaft is rotatably penetrated in the through hole, the second bevel gear is arranged at one end of the second shaft and meshed with the first bevel gear, the turning handle is arranged at the other end of the second shaft, and a locking structure is provided between the lower disk and the turning handle.

8. The motor fan according to claim 7, characterized in that: The locking structure includes locking block 1 and locking block 2. A movable groove is provided on one side of the turning handle connected to the second shaft body. The locking block 1 is arranged in the movable groove. The end of the second shaft body connected to the turning handle is provided with locking groove 1 matching locking block 1. The locking block 2 is provided on the outer side wall of the turning handle, and the inner side wall of the through hole is provided with locking groove 2 matching locking block 2.

9. The motor fan according to claim 7, characterized in that: A second spring connecting the end of the second shaft body and the rotating handle is arranged in the movable groove.

10. A motor, characterized in that: A motor fan comprising the motor fan as described in any one of claims 1 to 9.

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