A motor with a cooling mechanism

Abstract

The present invention relates to the technical field of motors, and discloses a motor with a cooling mechanism, including a motor body. A motor shaft is arranged at the top of the motor body, and a dust removal and heat dissipation mechanism is arranged outside the motor body; the dust removal and heat dissipation mechanism includes a horizontal plate fixedly sleeved outside the motor shaft. A second connecting rod for pushing and pulling the second movable block to move is hinged between the third movable block and the second movable block. A first connecting plate is arranged on one side of the vertical plate. A third connecting rod for pushing and pulling the first connecting plate to move is hinged between the first connecting plate and the second movable block. A second connecting plate is arranged on one side of the first connecting plate. Circular brush plates for cleaning dust on the outside of the motor body are equidistantly arranged on one side of the second connecting plate. The present invention effectively avoids the problem that the normal heat dissipation of the motor is affected because it is difficult to automatically remove dust and impurities attached to the surface of the motor.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and particularly to a motor with a cooling mechanism. Background Art

[0002] A motor, usually also called a "motor", is an electromagnetic device that realizes the conversion or transmission of electrical energy based on the law of electromagnetic induction. Motors mainly include two categories: electric motors and generators. An electric motor can convert electrical energy into mechanical energy, while a generator can generate electrical energy from mechanical energy. The internal structure of an electric motor usually includes a stator and a rotor. There are energized coils in the stator, which generate a rotating magnetic field that acts on the rotor to make it generate rotational power. Motors can be further classified into AC motors and DC motors according to the type of current used. AC motors can be further divided into single-phase and three-phase motors; according to the slip ratio, motors can also be divided into synchronous motors and asynchronous motors. Motors are widely used in various sectors of the national economy and household appliances as the power to drive various mechanical equipment. Motors generate a large amount of heat during long-term operation. In order to prevent the motor from being damaged due to overheating, a special motor with a cooling mechanism is required.

[0003] The common cooling methods of existing motors are usually heat dissipation by a cooling fan and water cooling. These two types of cooling methods not only have low costs but are also relatively convenient to use. However, when the motor is used for a long time, dust and impurities are likely to adhere to its surface. Moreover, since existing motors lack an integrated structure that can automatically clean dust and impurities, the accumulated dust will cover the surface of the motor, thus affecting the normal dissipation of heat. Therefore, we provide a motor with a cooling mechanism. Summary of the Invention

[0004] To solve the problem in the above background art that it is difficult to automatically remove the dust and impurities adhering to the surface of the motor, which affects the normal heat dissipation of the motor, the present invention provides a motor with a cooling mechanism.

[0005] The present invention is implemented by the following technical solutions: A motor with a cooling mechanism includes:

[0006] A motor body, on the top of which there is a motor shaft, and outside the motor body there is a dust removal and heat dissipation mechanism;

[0007] The dust removal and heat dissipation mechanism includes a horizontal plate fixedly sleeved outside the motor shaft. One side of the bottom of the horizontal plate is fixedly connected with a vertical plate, and the included angle between the vertical plate and the horizontal plate is 90 degrees. A strip-shaped groove one for facilitating movement is formed on the horizontal plate. An active block one is movably connected inside the strip-shaped groove one. A spring one for pulling the active block one is fixedly connected between the active block one and the inner wall of the strip-shaped groove one. A strip-shaped groove two for facilitating movement is formed on the vertical plate. Slide bars one are symmetrically and fixedly connected inside the strip-shaped groove two. Active blocks two are symmetrically slidably connected outside the slide bars one. A connecting rod one for pushing and pulling the upper active block two to move is hinged between the upper active block two and the active block one. The middle part of one side of the vertical plate is fixedly connected with a horizontal plate. A strip-shaped groove three for facilitating movement is formed on the horizontal plate. Slide bars two are symmetrically and fixedly connected inside the strip-shaped groove three. An active block three is slidably connected outside the slide bars two. A connecting rod two for pushing and pulling the active block two to move is hinged between the active block three and the active block two. A connecting plate one is arranged on one side of the vertical plate. A connecting rod three for pushing and pulling the connecting plate one to move is hinged between the connecting plate one and the active block two. A connecting plate two is arranged on one side of the connecting plate one. Circular brush plates for cleaning the dust outside the motor body are equidistantly arranged on one side of the connecting plate two.

[0008] As a further improvement of the above solution, the dust shaking-off assembly includes a spring two symmetrically and fixedly connected between the connecting plate one and the connecting plate two. The middle parts of the connecting plate one and the connecting plate two are hinged through a hinge. The bottom end of the vertical plate is fixedly connected with an L-shaped stopper.

[0009] As a further improvement of the above solution, the dust throwing-off assembly includes chutes equidistantly formed on the connecting plate two for facilitating movement. Sliders are slidably connected inside the chutes. A spring three for pulling the sliders is fixedly connected between the sliders and the inner walls of the chutes. The circular brush plates are rotationally connected with the sliders through rotating shafts. A hollow shaft is rotationally connected to the sliders through brackets. A straight rod is movably connected inside the hollow shaft, and one end of the straight rod extends outside the hollow shaft and is fixedly connected with the connecting plate two. Conical gears for transmission are fixedly sleeved outside the rotating shafts and the hollow shaft, and the conical gears are meshed with each other.

[0010] As a further improvement of the above solution, the dust throwing-off assembly further includes:

[0011] A T-shaped connecting piece, which is arranged inside the hollow shaft and fixedly connected with one end of the straight rod. Both ends of the T-shaped connecting piece are movably connected with balls. Spiral grooves are formed on the inner wall of the hollow shaft corresponding to the positions of the balls.

[0012] As a further improvement of the above solution, wheel grooves are symmetrically formed inside the first strip-shaped groove, and rollers are rotatably connected to both sides of the first movable block and are movably connected to the wheel grooves on the same side.

[0013] As a further improvement of the above solution, the height of the bottom end of the first connecting plate is greater than the height of the top end of the L-shaped stopper, and the height of the bottom end of the second connecting plate is less than the height of the top end of the L-shaped stopper.

[0014] As a further improvement of the above solution, the edges of the bottom end of the second connecting plate and the top edge of the L-shaped stopper are both rounded.

[0015] As a further improvement of the above solution, the sum of the diameters of the equidistantly arranged circular brush plates is consistent with the vertical height of the motor body.

[0016] As a further improvement of the above solution, an anti-drop ring is fixedly sleeved outside the end of the straight rod fixedly connected to the L-shaped connecting piece.

[0017] As a further improvement of the above solution, the ball is adapted to the spiral groove.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. In the present invention, the rotation of the motor shaft of the motor body drives the equidistantly arranged circular brush plates to rotate together, so that the dust and impurities on the surface of the motor body can be cleaned, effectively avoiding the problem that it is difficult to automatically remove the dust and impurities attached to the motor surface, which will affect the normal heat dissipation of the motor, and it has strong practicability.

[0020] 2. In the process of the motor shaft of the motor body driving the equidistantly arranged circular brush plates to rotate together in the present invention, by using the action of centrifugal force and the movable cooperation between the rollers and the wheel grooves, the first movable block will move to the other end of the first strip-shaped groove and stretch the first spring. By using the hinged action between the first movable block and the upper second movable block and the first link, and the sliding cooperation between the second movable block and the first slide rod, the upper second movable block can be pushed downward. At the same time, by using the hinged action between the second movable block and the third movable block and the second link, and the sliding cooperation between the third movable block and the second slide rod, the third movable block can be pushed to move to the other end of the third strip-shaped groove when the upper second movable block moves downward, so as to drive the lower second movable block to rise at the same time. By using the hinged action between the second movable block and the first connecting plate and the third link, the first connecting plate can be pushed to approach the outer wall of the motor body, so as to push the circular brush plate to approach the outer wall of the motor body, and further achieve the purpose that the circular brush plate can automatically keep in contact with the outer wall of the motor body when the motor shaft rotates, effectively improving the cleaning effect of the dust attached to the outer wall of the motor body.

[0021] 3. When the motor shaft stops rotating, due to the disappearance of the centrifugal force and the cooperation of the spring-back effect of Spring 1, the circular brush plate will automatically reset, thereby separating the circular brush plate from the outer wall of the motor body, effectively preventing the bristles on the circular brush plate from always being in contact with the outer wall of the motor body and easily bending and deforming, and further ensuring the cleaning effect of the circular brush plate on the outer wall of the motor body.

[0022] 4. When the circular brush plate approaches and moves away from the outer wall of the motor body, when the second connecting plate contacts the L-shaped block, due to the hinged effect between the first connecting plate and the second connecting plate, the upper or lower end of the second connecting plate will tilt. When the bottom end of the second connecting plate is released from the restriction of the L-shaped block, the elastic effect of Spring 2 will cause the tilted second connecting plate at the upper or lower end to automatically reset, thereby shaking off the dust and impurities adhering to the surface of the bristles on the circular brush plate, and further ensuring its subsequent good cleaning effect.

[0023] 5. During the process of cleaning the outer wall of the motor body, the slider will slide to the other end of the chute under the action of inertia, and the movement of the slider will also drive the hollow shaft to move together. By using the cooperation of the ball and the spiral groove and the meshing effect between the bevel gears, the circular brush plate can be driven to rotate. At the same time, when the motor shaft stops rotating, due to the disappearance of the inertia effect, the slider will automatically reset under the spring-back effect of Spring 3. Repeating the above principle, the circular brush plate will also be driven to rotate, and the rotation of the circular brush plate drives the bristles to rotate, thereby being able to shake off the dust and impurities adhering to the bristles due to being mixed with motor oil, further improving the cleaning effect on the bristles, and having strong practicability. Brief Description of the Drawings

[0024] Figure 1 It is a three-dimensional structure schematic diagram of the present invention;

[0025] Figure 2 It is a three-dimensional structure schematic diagram of the dust removal and heat dissipation mechanism of the present invention;

[0026] Figure 3 It is a three-dimensional structure schematic diagram of the first movable block of the present invention;

[0027] Figure 4 It is a top view three-dimensional structure schematic diagram of the dust shaking-off assembly and the dust throwing-off assembly of the present invention;

[0028] Figure 5 It is a three-dimensional structure schematic diagram of the dust throwing-off assembly of the present invention;

[0029] Figure 6 It is a cross-sectional three-dimensional structure schematic diagram of the connection structure of the straight rod, the hollow shaft, the T-shaped connecting piece, the ball and the spiral groove of the present invention;

[0030] Figure 7 This is a three-dimensional schematic diagram of the straight rod, T-shaped connecting piece and ball connection structure of the present invention.

[0031] Main symbol description:

[0032] 1. Motor body; 2. Motor shaft; 3. Groove; 4. Roller; 5. Anti-detachment ring; 101. Horizontal plate; 102. Vertical plate; 103. First strip-shaped groove; 104. First movable block; 105. First spring; 106. Second strip-shaped groove; 107. First sliding rod; 108. Second movable block; 109. First connecting rod; 110. Horizontal plate; 111. Third strip-shaped groove; 112. Second sliding rod; 113. Third movable block; 114. Second connecting rod; 115. First connecting plate; 116. Third connecting rod; 117. Second connecting plate; 118. Circular brush plate; 1001. Second spring; 1002. Hinge piece; 1003. L-shaped stopper; 201. Slide block; 202. Third spring; 203. Hollow shaft; 204. Straight rod; 205. Bevel gear; 206. T-shaped connecting piece; 207. Ball; 208. Spiral groove. Specific embodiments

[0033] Next, in combination with the drawings and specific embodiments, the present invention will be further described. It should be noted that, on the premise of no conflict, any combination of the following-described embodiments or technical features can form a new embodiment.

[0034] Embodiment 1:

[0035] Please refer to Figure 1-7 , a motor with a cooling mechanism in this embodiment includes:

[0036] A motor body 1, a motor shaft 2 is arranged at the top of the motor body 1, and a dust removal and heat dissipation mechanism is arranged outside the motor body 1;

[0037] The dust removal and heat dissipation mechanism includes a horizontal plate 101 fixedly sleeved outside the motor shaft 2. One side of the bottom of the horizontal plate 101 is fixedly connected to a vertical plate 102, and the included angle between the vertical plate 102 and the horizontal plate 101 is ninety degrees. A first strip-shaped groove 103 for easy movement is formed on the horizontal plate 101. A first movable block 104 is movably connected inside the first strip-shaped groove 103. A first spring 105 for pulling the first movable block 104 is fixedly connected between the first movable block 104 and the inner wall of the first strip-shaped groove 103. A second strip-shaped groove 106 for easy movement is formed on the vertical plate 102. First slide rods 107 are symmetrically and fixedly connected inside the second strip-shaped groove 106. Second movable blocks 108 are symmetrically slidably connected to the outside of the first slide rods 107. A first connecting rod 109 for pushing and pulling the upper second movable block 108 to move is hinged between the upper second movable block 108 and the first movable block 104. The middle of one side of the vertical plate 102 is fixedly connected to a horizontal plate 110. A third strip-shaped groove 111 for easy movement is formed on the horizontal plate 110. Second slide rods 112 are symmetrically and fixedly connected inside the third strip-shaped groove 111. A third movable block 113 is slidably connected to the outside of the second slide rods 112. A second connecting rod 114 for pushing and pulling the second movable block 108 to move is hinged between the third movable block 113 and the second movable block 108. A first connecting plate 115 is arranged on one side of the vertical plate 102. A third connecting rod 116 for pushing and pulling the first connecting plate 115 to move is hinged between the first connecting plate 115 and the second movable block 108. A second connecting plate 117 is arranged on one side of the first connecting plate 115. Circular brush plates 118 for cleaning the dust on the outside of the motor body 1 are equidistantly arranged on one side of the second connecting plate 117. Wheel grooves 3 are symmetrically formed inside the first strip-shaped groove 103. Rollers 4 are rotatably connected to both sides of the first movable block 104 and are movably connected to the same-side wheel grooves 3. By using the rolling contact and cooperation between the rollers 4 and the wheel grooves 3, the friction between the first movable block 104 and the first strip-shaped groove 103 can be reduced, thereby ensuring the smoothness of the movement of the first movable block 104. The sum of the diameters of the equidistantly arranged circular brush plates 118 is the same as the vertical height of the motor body 1, ensuring the thoroughness of the cleaning of the outer wall of the motor body 1.

[0038] The dust throwing-off assembly includes sliding grooves equidistantly formed on the second connecting plate 117 for facilitating movement. A slider 201 is slidably connected inside the sliding groove. A third spring 202 for pulling the slider 201 is fixedly connected between the slider 201 and the inner wall of the sliding groove. The circular brush plate 118 is rotatably connected to the slider 201 through a rotating shaft. A hollow shaft 203 is rotatably connected to the slider 201 through a bracket. A straight rod 204 is movably connected inside the hollow shaft 203, and one end of the straight rod 204 extends outside the hollow shaft 203 and is fixedly connected to the second connecting plate 117. Conical gears 205 for transmission are fixedly sleeved on the outside of the rotating shaft and the hollow shaft 203, and the conical gears 205 are meshed with each other. An anti-disengagement ring 5 is fixedly sleeved on the outside of the end of the straight rod 204 fixedly connected to the T-shaped connector 206, which can prevent the straight rod 204 from disengaging from the hollow shaft 203.

[0039] The dust throwing-off assembly further includes:

[0040] A T-shaped connector 206 is arranged inside the hollow shaft 203 and fixedly connected to one end of the straight rod 204. Two ends of the T-shaped connector 206 are movably connected with balls 207. Spiral grooves 208 are formed on the inner wall of the hollow shaft 203 corresponding to the positions of the balls 207, and the balls 207 are adapted to the spiral grooves 208.

[0041] In the embodiment of the present application, the implementation principle of a motor with a cooling mechanism is as follows: When the motor shaft 2 of the motor body 1 rotates, it can drive the horizontal plate 101 to rotate. The rotation of the horizontal plate 101 drives the vertical plate 102 to rotate, and the vertical plate 102 will drive the horizontal plate 110 to rotate. The rotation of the vertical plate 102 will also drive the connecting plate one 115 and the connecting plate two 117 to rotate, so as to drive the equally spaced circular brush plates 118 to rotate around the motor body 1. During the rotation process, due to the action of centrifugal force and the movable cooperation between the roller 4 and the wheel groove 3, the movable block one 104 will move towards the other end of the strip groove one 103 and stretch the spring one 105. Using the hinged action between the movable block one 104 and the upper movable block two 108 and the connecting rod one 109, and the sliding cooperation between the movable block two 108 and the slide bar one 107, it can push the upper movable block two 108 downward. At the same time, using the hinged action between the movable block two 108 and the movable block three 113 and the connecting rod two 114, and the sliding cooperation between the movable block three 113 and the slide bar two 112, when the upper movable block two 108 moves downward, it can push the movable block three 113 towards the other end of the strip groove three 111, so as to drive the lower movable block two 108 to rise at the same time. Using the hinged action between the movable block two 108 and the connecting plate one 115 and the connecting rod three 116, it can push the connecting plate one 115 towards the outer wall of the motor body 1, so as to push the circular brush plate 118 towards the outer wall of the motor body 1, which is convenient for cleaning the outer wall of the motor body 1. When the motor shaft 2 stops rotating, due to the disappearance of the centrifugal force and the rebound effect of the spring one 105, the circular brush plate 118 will automatically reset, so as to separate the circular brush plate 118 from the outer wall of the motor body 1, effectively preventing the bristles on the circular brush plate 118 from always being in contact with the outer wall of the motor body 1 and being prone to bending deformation. At the same time, during the process of cleaning the outer wall of the motor body 1, under the action of inertia, the slider 201 will slide towards the other end of the chute, and the movement of the slider 201 will also drive the hollow shaft 203 to move together. Using the cooperation between the ball 207 and the spiral groove 208 and the meshing action between the bevel gears 205, it can drive the circular brush plate 118 to rotate. At the same time, when the motor shaft 2 stops rotating, due to the disappearance of the inertia, using the rebound effect of the spring three 202, the slider 201 will automatically reset. Repeating the above principle, it will also drive the circular brush plate 118 to rotate. The rotation of the circular brush plate 118 drives the bristles to rotate, so as to throw off the dust and impurities adhering to the bristles due to the mixing of motor oil.

[0042] Embodiment 2:

[0043] On the basis of Embodiment 1, the further improvement of this embodiment lies in that: the dust shaking-off component includes a second spring 1001 symmetrically and fixedly connected between the first connecting plate 115 and the second connecting plate 117. The middle parts of the first connecting plate 115 and the second connecting plate 117 are hinged through a hinge member 1002. The bottom end of the vertical plate 102 is fixedly connected with an L-shaped stopper 1003. The height of the bottom end of the first connecting plate 115 is greater than the height of the top end of the L-shaped stopper 1003, and the height of the bottom end of the second connecting plate 117 is less than the height of the top end of the L-shaped stopper 1003, so as to ensure that the L-shaped stopper 1003 can smoothly obstruct the second connecting plate 117 during the process of the circular brush plate 118 approaching or departing from the motor body 1, thus ensuring the smooth cleaning of the bristles. The bottom edge of the second connecting plate 117 and the top edge of the L-shaped stopper 1003 are both provided with rounded corners, which is convenient for the second connecting plate 117 to smoothly break away from the obstruction of the L-shaped stopper 1003 after tilting a certain angle. During the process of the circular brush plate 118 approaching and departing from the outer wall of the motor body 1, when the second connecting plate 117 contacts the L-shaped stopper 1003, due to the hinge action between the first connecting plate 115 and the second connecting plate 117, the situation that the upper end or the lower end of the second connecting plate 117 tilts will occur. When the bottom end of the second connecting plate 117 breaks away from the restriction of the L-shaped stopper 1003, due to the elastic action of the second spring 1001, the tilted second connecting plate 117 at the upper end or the lower end will automatically reset, so as to shake off the dust and impurities attached to the surface of the bristles on the circular brush plate 118, thereby ensuring its subsequent good cleaning effect.

[0044] The above-mentioned implementation manners are only the preferred implementation manners of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by those skilled in the art on the basis of the present invention belong to the protection scope required by the present invention.

Claims

1. A motor with a cooling mechanism, characterized in that, Including: A motor body (1), a motor shaft (2) is arranged at the top of the motor body (1), and a dust removal and heat dissipation mechanism is arranged outside the motor body (1). The dust removal and heat dissipation mechanism includes a horizontal plate (101) fixedly sleeved outside the motor shaft (2). One side of the bottom of the horizontal plate (101) is fixedly connected with a vertical plate (102), and the included angle between the vertical plate (102) and the horizontal plate (101) is ninety degrees. A first strip-shaped groove (103) for facilitating movement is formed on the horizontal plate (101). A first movable block (104) is movably connected inside the first strip-shaped groove (103). A first spring (105) for pulling the first movable block (104) is fixedly connected between the first movable block (104) and the inner wall of the first strip-shaped groove (103). A second strip-shaped groove (106) for facilitating movement is formed on the vertical plate (102). First sliding rods (107) are symmetrically and fixedly connected inside the second strip-shaped groove (106). Second movable blocks (108) are symmetrically slidably connected to the outside of the first sliding rods (107). A first connecting rod (109) for pushing and pulling the upper second movable block (108) to move is hinged between the upper second movable block (108) and the first movable block (104). The middle part of one side of the vertical plate (102) is fixedly connected with a horizontal plate (110). A third strip-shaped groove (111) for facilitating movement is formed on the horizontal plate (110). Second sliding rods (112) are symmetrically and fixedly connected inside the third strip-shaped groove (111). A third movable block (113) is slidably connected to the outside of the second sliding rods (112). A second connecting rod (114) for pushing and pulling the second movable block (108) to move is hinged between the third movable block (113) and the second movable block (108). A first connecting plate (115) is arranged on one side of the vertical plate (102). A third connecting rod (116) for pushing and pulling the first connecting plate (115) to move is hinged between the first connecting plate (115) and the second movable block (108). A second connecting plate (117) is arranged on one side of the first connecting plate (115). Circular brush plates (118) for cleaning the dust outside the motor body (1) are equidistantly arranged on one side of the second connecting plate (117).

2. The motor with a cooling mechanism according to claim 1, wherein, The dust shaking-off assembly includes a second spring (1001) symmetrically and fixedly connected between the first connecting plate (115) and the second connecting plate (117). The middle parts of the first connecting plate (115) and the second connecting plate (117) are hinged through a hinge member (1002). An L-shaped stopper (1003) is fixedly connected to the bottom end of the vertical plate (102).

3. The motor with a cooling mechanism according to claim 2, wherein, The dust throwing-off assembly includes sliding grooves equidistantly formed on the second connecting plate (117) for facilitating movement. A slider (201) is slidably connected inside the sliding groove. A third spring (202) for pulling the slider (201) is fixedly connected between the slider (201) and the inner wall of the sliding groove. The circular brush plate (118) is rotatably connected to the slider (201) through a rotating shaft. A hollow shaft (203) is rotatably connected to the slider (201) through a bracket. A straight rod (204) is movably connected inside the hollow shaft (203), and one end of the straight rod (204) extends outside the hollow shaft (203) and is fixedly connected to the second connecting plate (117). Conical gears (205) for transmission are fixedly sleeved outside the rotating shaft and the hollow shaft (203), and the conical gears (205) are meshed with each other.

4. The motor with a cooling mechanism according to claim 3, characterized in that, The dust throwing-off assembly further includes: A T-shaped connecting piece (206) is arranged inside the hollow shaft (203) and fixedly connected to one end of the straight rod (204). Two ends of the T-shaped connecting piece (206) are movably connected with balls (207). Spiral grooves (208) are formed on the inner wall of the hollow shaft (203) corresponding to the positions of the balls (207).

5. The motor with a cooling mechanism according to claim 4, characterized in that, Wheel grooves (3) are symmetrically formed inside the first strip-shaped groove (103). Two sides of the first movable block (104) are rotatably connected with rollers (4) and are movably connected with the wheel grooves (3) on the same side.

6. The motor with a cooling mechanism according to claim 5, characterized in that, The height of the bottom end of the first connecting plate (115) is greater than the height of the top end of the L-shaped block (1003). The height of the bottom end of the second connecting plate (117) is less than the height of the top end of the L-shaped block (1003).

7. The motor with a cooling mechanism according to claim 6, characterized in that, The edges of the bottom end of the second connecting plate (117) and the top end of the L-shaped block (1003) are both rounded.

8. A motor with a cooling mechanism according to claim 7, characterized in that, The sum of the diameters of the equidistantly arranged circular brush plates (118) is consistent with the vertical height of the motor body (1).

9. The motor with a cooling mechanism according to claim 8, characterized in that, An anti-drop ring (5) is fixedly sleeved outside the end of the straight rod (204) fixedly connected to the T-shaped connecting piece (206).

10. A motor with a cooling mechanism as claimed in claim 9, characterized in that, The balls (207) are adapted to the spiral grooves (208).

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