A heat dissipation structure of a permanent magnet brushless motor

Abstract

The present invention provides a heat dissipation structure of a permanent magnet brushless motor, comprising a permanent magnet brushless motor main body, wherein the left end of the permanent magnet brushless motor main body is fixedly connected with a rotating shaft, the surface of the rotating shaft is fixedly connected with a main gear, the surface of the main gear is movably connected with a transmission wheel, the left end of the transmission wheel is fixedly connected with a rotating rod, the right end of the rotating rod is fixedly connected with a fan blade, and the surface of the permanent magnet brushless motor main body is provided with a vent pipe; the present invention arranges a box body outside the permanent magnet brushless motor main body, and cooperates with the main gear on the rotating shaft and the transmission wheel on the rotating rod, so that the fan blade on the rotating rod can rotate to blow out wind, and then cooperates with a cover and a vent pipe, so that the wind can flow in the vent pipe and then blow onto the permanent magnet brushless motor main body from the air outlet, thereby playing a role in dissipating heat for the permanent magnet brushless motor main body.

Description

Technical Field

[0001] The invention relates to the technical field of permanent magnet brushless motors, and in particular to a heat dissipation structure of a permanent magnet brushless motor. Background Art

[0002] Permanent magnet brushless motor is a permanent magnet motor that is commutated or current controlled by electronic circuits. There are two types of permanent magnet brushless motors: sinusoidal wave drive and square wave drive. The one with rectangular wave drive current is usually called permanent magnet brushless DC motor, and the one with sinusoidal wave drive current is usually called permanent magnet AC servo motor. The sensing type can be divided into sensor motor and positive sensor motor.

[0003] During the specific use of the permanent magnet brushless motor, heat will be generated due to the operation of the internal components. However, the heat dissipation effect of the current permanent magnet brushless motor is not ideal. The heat will accumulate on the outer casing of the permanent magnet brushless motor. Long-term use will cause damage to the internal components of the permanent magnet brushless motor. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a heat dissipation structure of a permanent magnet brushless motor, which has the advantages of efficient heat dissipation and solves the problem that the existing permanent magnet brushless motor has an unsatisfactory heat dissipation effect.

[0005] The heat dissipation structure of the permanent magnet brushless motor of the present invention comprises a permanent magnet brushless motor body, the left end of the permanent magnet brushless motor body is fixedly connected to a rotating shaft, the surface of the rotating shaft is fixedly connected to a main gear, the surface of the main gear is movably connected to a transmission wheel, the left end of the transmission wheel is fixedly connected to a rotating rod, the right end of the rotating rod is fixedly connected to a fan blade, the surface of the permanent magnet brushless motor body is provided with a ventilation pipe, the left top end of the ventilation pipe is fixedly connected to a cover, the left end of the cover corresponds to the fan blade, the ventilation pipe is spirally wrapped around the surface of the permanent magnet brushless motor body, the inner wall of the ventilation pipe is provided with an air outlet, and the outer surface of the permanent magnet brushless motor body is provided with a box.

[0006] The heat dissipation structure of the permanent magnet brushless motor of the present invention is characterized in that an L-shaped rod is fixedly connected to the inner wall of the left top end of the box body, and a sleeve is fixedly connected to the right end of the L-shaped rod. The inner wall of the sleeve fits with the surface of the rotating rod. Through the coordinated use of the L-shaped rod and the sleeve, the rotating rod is supported while the fan blades are guaranteed to rotate normally.

[0007] The heat dissipation structure of the permanent magnet brushless motor of the present invention is characterized in that a support rod is fixedly connected to the bottom inner wall of the box body, and the top end of the support rod is fixedly connected to the bottom of the permanent magnet brushless motor body. The setting of the support rod plays a supporting role for the permanent magnet brushless motor body.

[0008] The heat dissipation structure of the permanent magnet brushless motor of the present invention is characterized in that the left end of the rotating shaft is fixedly connected with a cylinder, the top end of the rotating shaft is provided with a concave hole, a connecting rod is movably connected with the inner wall of the concave hole, the top right side of the connecting rod is fixedly connected with a cross bar, and the bottom end of the cross bar is fixedly connected with bristles. By arranging the cylinder on the rotating shaft and cooperating with the connecting rod and cross bar on the cylinder, the rotating shaft can drive the bristles on the cross bar to rotate on the surface of the box body, thereby playing a role in cleaning the surface of the box body and avoiding the problem of dust accumulation on the box body to affect the heat dissipation of the permanent magnet brushless motor body.

[0009] The heat dissipation structure of the permanent magnet brushless motor of the present invention is characterized in that a first fixing hole is formed at the bottom end of the connecting rod, and an insertion rod is movably connected to the inner wall of the first fixing hole. The right end of the insertion rod passes through the left end of the cylinder and enters the first fixing hole. The coordinated use of the first fixing hole and the insertion rod facilitates the disassembly and installation of the connecting rod, thereby achieving the effect of facilitating the cleaning of the bristles.

[0010] The heat dissipation structure of the permanent magnet brushless motor of the present invention is characterized in that a fixing block is fixedly connected to the left side of the top end of the box body, a second fixing hole is opened on the left side of the middle part of the connecting rod, and a through hole matched with the second fixing hole is opened on the left side of the fixing block. Through the design of the fixing block and the second fixing hole, when there is no need to clean the surface of the box body, the plug rod can be unplugged, and then the connecting rod can be moved upward to make the second fixing hole correspond to the through hole on the fixing block, and then the connecting rod can be fixed in cooperation with the latch.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The present invention sets a box body outside the permanent magnet brushless motor body, and cooperates with the main gear on the rotating shaft and the transmission wheel on the rotating rod, so that the fan blades on the rotating rod can rotate to blow out wind, and then cooperates with the cover and the vent pipe, so that the wind can flow in the vent pipe and then blow to the permanent magnet brushless motor body from the air outlet, thereby playing the role of heat dissipation of the permanent magnet brushless motor body.

[0013] 2. The present invention arranges a cylinder on the rotating shaft and cooperates with the connecting rod and cross bar on the cylinder, so that the rotating shaft can drive the bristles on the cross bar to rotate on the surface of the box, thereby playing a role in cleaning the surface of the box and avoiding the problem of dust accumulation on the box to affect the heat dissipation of the permanent magnet brushless motor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0015] Figure 1 It is a schematic diagram of the front cross-section structure of the present invention;

[0016] Figure 2 It is a schematic diagram of the left side cross-sectional structure of the present invention.

[0017] In the figure: 1. permanent magnet brushless motor body; 2. rotating shaft; 3. main gear; 4. transmission wheel; 5. rotating rod; 6. fan blades; 7. cover; 8. ventilation pipe; 9. air outlet; 10. box body; 11. L-shaped rod; 12. sleeve; 13. support rod; 14. cylinder; 15. concave hole; 16. connecting rod; 17. cross bar; 18. bristles; 19. first fixing hole; 20. plug rod; 21. fixing block; 22. second fixing hole. DETAILED DESCRIPTION

[0018] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0019] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0020] See also Figure 1-2The heat dissipation structure of the permanent magnet brushless motor of the present invention comprises a permanent magnet brushless motor body 1, a rotating shaft 2 is fixedly connected to the left end of the permanent magnet brushless motor body 1, a main gear 3 is fixedly connected to the surface of the rotating shaft 2, a transmission wheel 4 is movably connected to the surface of the main gear 3, a rotating rod 5 is fixedly connected to the left end of the transmission wheel 4, a fan blade 6 is fixedly connected to the right end of the rotating rod 5, a vent pipe 8 is arranged on the surface of the permanent magnet brushless motor body 1, a cover 7 is fixedly connected to the left top end of the vent pipe 8, the left end of the cover 7 corresponds to the fan blade 6, and the vent pipe 8 is spirally wrapped around the permanent magnet brushless motor body 1. An air outlet 9 is provided on the surface of the motor body 1 and the inner wall of the vent pipe 8, and a box body 10 is provided on the outer surface of the permanent magnet brushless motor body 1. By arranging the box body 10 on the outside of the permanent magnet brushless motor body 1, and cooperating with the main gear 3 on the rotating shaft 2 and the transmission wheel 4 on the rotating rod 5, the fan blades 6 on the rotating rod 5 can be rotated to blow out wind, and then the cover 7 and the vent pipe 8 are cooperated, so that the wind can flow in the vent pipe 8 and then blow onto the permanent magnet brushless motor body 1 from the air outlet 9, thereby playing the role of dissipating heat for the permanent magnet brushless motor body 1.

[0021] An L-shaped rod 11 is fixedly connected to the inner wall of the left top end of the box body 10, and a sleeve 12 is fixedly connected to the right end of the L-shaped rod 11. The inner wall of the sleeve 12 fits the surface of the rotating rod 5. Through the coordinated use of the L-shaped rod 11 and the sleeve 12, the rotating rod 5 is supported while ensuring the normal rotation of the fan blades 6.

[0022] A support rod 13 is fixedly connected to the bottom inner wall of the box body 10, and the top of the support rod 13 is fixedly connected to the bottom of the permanent magnet brushless motor body 1. The setting of the support rod 13 plays a supporting role for the permanent magnet brushless motor body 1.

[0023] A cylinder 14 is fixedly connected to the left end of the rotating shaft 2, a recessed hole 15 is opened at the top of the rotating shaft 2, a connecting rod 16 is movably connected to the inner wall of the recessed hole 15, a cross bar 17 is fixedly connected to the right side of the top end of the connecting rod 16, and a brush 18 is fixedly connected to the bottom end of the cross bar 17. By arranging the cylinder 14 on the rotating shaft 2 and cooperating with the connecting rod 16 and the cross bar 17 on the cylinder 14, the rotating shaft 2 can drive the bristles 18 on the cross bar 17 to rotate on the surface of the box body 10, thereby playing a role in cleaning the surface of the box body 10 and avoiding the problem of dust accumulation on the box body 10 affecting the heat dissipation of the permanent magnet brushless motor body 1.

[0024] A first fixing hole 19 is provided at the bottom end of the connecting rod 16, and an insertion rod 20 is movably connected to the inner wall of the first fixing hole 19. The right end of the insertion rod 20 passes through the left end of the cylinder 14 and enters into the first fixing hole 19. The coordinated use of the first fixing hole 19 and the insertion rod 20 facilitates the disassembly and installation of the connecting rod 16, thereby achieving the effect of facilitating the cleaning of the bristles 18.

[0025] A fixing block 21 is fixedly connected to the left side of the top end of the box body 10, a second fixing hole 22 is opened on the left side of the middle part of the connecting rod 16, and a through hole matched with the second fixing hole 22 is opened on the left side of the fixing block 21. Through the design of the fixing block 21 and the second fixing hole 22, when there is no need to clean the surface of the box body 10, the plug 20 can be unplugged, and then the connecting rod 16 can be moved upward to make the second fixing hole 22 correspond to the through hole on the fixing block 21, and then the connecting rod 16 can be fixed with the help of the latch.

[0026] When using the present invention: first start the permanent magnet brushless motor body 1, at this time the rotating shaft 2 will drive the main gear 3 to rotate, and the main gear 3 will drive the transmission wheel 4 to rotate, and the transmission wheel 4 will drive the rotating rod 5 to rotate, so the fan blades 6 on the rotating rod 5 will rotate accordingly, and the wind blown by the fan blades 6 will enter the cover 7, and then enter the ventilation pipe 8, and after circling in the ventilation pipe 8, it will be blown onto the permanent magnet brushless motor body 1 through the air outlet 9. When it is necessary to clean the surface of the box body 10, first unplug the pin, then insert the connecting rod 16 into the recessed hole 15, and then insert the insertion rod 20 into the first fixing hole 19, fix the connecting rod 16 at this time, and then start the permanent magnet brushless motor body 1, at this time the rotating shaft 2 will drive the connecting rod 16 to rotate, and the cross bar 17 on the connecting rod 16 will rotate accordingly, and the bristles 18 under the cross bar 17 will brush on the surface of the box body 10 to clean the dust on the box body 10.

[0027] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A heat dissipation structure of a permanent magnet brushless motor, comprising a permanent magnet brushless motor body (1), characterized in that: The left end of the permanent magnet brushless motor body (1) is fixedly connected to a rotating shaft (2), the surface of the rotating shaft (2) is fixedly connected to a main gear (3), the surface of the main gear (3) is movably connected to a transmission wheel (4), the left end of the transmission wheel (4) is fixedly connected to a rotating rod (5), the right end of the rotating rod (5) is fixedly connected to a fan blade (6), the surface of the permanent magnet brushless motor body (1) is provided with a vent pipe (8), the left top end of the vent pipe (8) is fixedly connected to a cover (7), the left end of the cover (7) corresponds to the fan blade (6), the vent pipe (8) is spirally wrapped around the surface of the permanent magnet brushless motor body (1), the inner wall of the vent pipe (8) is provided with an air outlet (9), and the outer surface of the permanent magnet brushless motor body (1) is provided with a box (10); The left end of the rotating shaft (2) is fixedly connected to a cylinder (14), the top end of the rotating shaft (2) is provided with a concave hole (15), the inner wall of the concave hole (15) is movably connected to a connecting rod (16), the top right side of the connecting rod (16) is fixedly connected to a cross bar (17), and the bottom end of the cross bar (17) is fixedly connected to bristles (18); A first fixing hole (19) is formed at the bottom end of the connecting rod (16); an inserting rod (20) is movably connected to the inner wall of the first fixing hole (19); the right end of the inserting rod (20) passes through the left end of the cylinder (14) and enters the first fixing hole (19); A fixing block (21) is fixedly connected to the left side of the top end of the box body (10), a second fixing hole (22) is opened on the left side of the middle part of the connecting rod (16), and a through hole matching the second fixing hole (22) is opened on the left side of the fixing block (21).

2. The heat dissipation structure of a permanent magnet brushless motor according to claim 1, characterized in that: An L-shaped rod (11) is fixedly connected to the inner wall of the left top end of the box body (10), and a sleeve (12) is fixedly connected to the right end of the L-shaped rod (11), and the inner wall of the sleeve (12) is in contact with the surface of the rotating rod (5).

3. The heat dissipation structure of a permanent magnet brushless motor according to claim 1, characterized in that: A support rod (13) is fixedly connected to the inner wall of the bottom of the box body (10), and the top end of the support rod (13) is fixedly connected to the bottom of the permanent magnet brushless motor body (1).

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