External rotor motor capable of increasing installation space

Abstract

The invention relates to the field of motors, and discloses an external rotor motor for improving installation space, which comprises a shell, a plurality of connecting pieces are fixedly connected to the outer wall of the shell, a motor is fixedly connected to one end of each connecting piece, a rotating shaft fixedly sleeves the output end of the motor, and a connecting block is fixedly connected to one end of the rotating shaft. A cooling fan is movably clamped to one end of the connecting block, a fixed shell is fixedly connected to one end of the cooling fan, moving grooves are formed in the two ends of the fixed shell, moving plates are slidably connected into the moving grooves, a first spring is fixedly connected to one end between the two moving plates, and a first limiting rod is fixedly connected to one end of each moving plate; second limiting rods are fixedly connected to the two sides of the connecting block. Compared with the prior art, the rotating shaft rotates to drive the heat dissipation fan to rotate through the connecting block, hot air between the shell and the motor is quickly blown away, the heat dissipation fan conducts heat dissipation on the motor, and damage caused by poor heat dissipation when the motor works in a narrow space for a long time is avoided.

Description

Technical Field

[0001] The invention relates to the field of motors, and in particular to an outer rotor motor with improved installation space. Background Art

[0002] The structural design of the outer rotor motor is relatively simple, which not only simplifies the manufacturing process, but also makes maintenance more convenient, thereby reducing the overall cost and having the characteristics of aesthetics. The speed of the outer rotor motor is relatively low, but its rotor can directly output torque, which makes it very suitable for applications that require low speed but high torque.

[0003] In the prior art, a Chinese patent document with publication number CN107567260B proposes an integrated motor, which solves the problem that the heat dissipation efficiency will be greatly reduced when the electric vehicle is running at a slow speed or the natural air circulation is slow due to some other reasons. In the long run, the service life of the controller is seriously affected. However, in actual application, there is still a situation where the outer rotor motor is applied to a lathe and is installed inside the lathe. Due to the structural design and working characteristics of the outer rotor motor, it will generate more heat when working, and the outer rotor motor installed in the inner cavity of the lathe is difficult to dissipate heat quickly. Therefore, there is a problem that the outer rotor motor installed in the inner cavity of the lathe is prone to motor damage during long-term operation. Therefore, we disclose an outer rotor motor with increased installation space to meet the demand for better heat dissipation in a narrow space. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an outer rotor motor with improved installation space, which has the advantages of being able to be stably used in a narrow space, and solves a series of problems such as excessive heat generated when the outer rotor motor is used.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an outer rotor motor with improved installation space, comprising a shell, a plurality of connecting plates fixedly connected to the outer wall of the shell, one end of the connecting plate fixedly connected to the motor, an output end of the motor fixedly sleeved with a rotating shaft, one end of the rotating shaft fixedly connected to a connecting block, one end of the connecting block movably connected to a heat dissipation fan, one end of the heat dissipation fan fixedly connected to a fixed shell, both ends of the fixed shell are provided with movable grooves, a movable plate is slidably connected in the movable groove, one end between the two movable plates is fixedly connected to a first spring, one end of the movable plate is fixedly connected to a first limiting rod, both sides of the connecting block are fixedly connected to a second limiting rod, both sides of the heat dissipation fan are provided with a first hole, one end of the second limiting rod passes through the hole to one end of the heat dissipation fan, one end of the second limiting rod is provided with a second hole, and one end of the first limiting rod passes through the second hole to one side of the second limiting rod.

[0006] Preferably, a spring sheet is fixedly connected to the other end between the two movable plates.

[0007] Preferably, one end of the outer shell is fixedly connected to a connecting shell, and one end of the connecting shell is fixedly sleeved with an exhaust pipe.

[0008] Preferably, the first limiting rod is slidably connected to the inner cavity of the fixed shell, one end of the movable plate is located in the inner cavity of the fixed shell, and the other end of the movable plate passes through the movable groove to the outside of the fixed shell.

[0009] Preferably, the movable plate is T-shaped, the fixed shell and the first limiting rod are both arc-shaped, the movable groove is an arc-shaped groove, and the centers of the fixed shell, the first limiting rod, the movable groove and the heat dissipation fan are the same point.

[0010] Preferably, the connecting block comprises a hollow circular ring and a hollow polygonal ring, a T-shaped groove is provided in the middle of the heat dissipation fan, the heat dissipation fan is movably connected to the rotating shaft, and the heat dissipation fan is movably connected to the hollow polygonal ring of the connecting block.

[0011] Preferably, the other end of the shell is movably connected with two protective shells, both sides of the motor are fixedly connected to the limiting tube, and a fixing block is slidably connected in the limiting tube, both sides of the shell are provided with limiting holes, the fixing block passes through the protective shell to the limiting hole, a second moving hole is provided on one side of the fixing block, one end of the fixing block is rotatably connected with a lever, both sides of the shell are fixedly connected with a fixing frame, one end of the fixing frame is rotatably connected with a lever, both sides of the shell are provided with a first moving hole, one end of the lever passes through the second moving hole and is rotatably connected to the fixed block, the other end of the lever passes through the first moving hole to the outside of the shell, one side of the lever is fixedly connected with a second spring, and the second spring is fixedly connected to the shell.

[0012] Preferably, protective covers are fixedly connected to both sides of the protective shell, the cooling fan is located between the two protective covers, the protective cover includes a semicircular ring and a plurality of support bars, and the diameter of the ring formed by the two semicircular rings is greater than the diameter of the rotating shaft.

[0013] Preferably, the shifting rod comprises a straight rod and a bent rod, the straight rod and the bent rod are fixedly connected, the bent rod is rotatably connected to the fixed block, and the straight rod passes through the first movable hole and extends to the outside of the housing.

[0014] Preferably, the side surface of the protective shell is L-shaped, the protective shell is snap-connected with the outer shell and the connecting piece, the outer diameters of the protective shell and the outer shell are the same, and the protective shell is semicircular.

[0015] Compared with the prior art, the present invention provides an outer rotor motor with increased installation space, which has the following beneficial effects: The outer rotor motor with improved installation space can drive the connecting block to rotate when the rotating shaft rotates, thereby driving the heat dissipation fan to rotate, so that the heat dissipation fan blows the heat generated when the motor is working to one end of the motor, fixes the position of the fixed shell by the heat dissipation fan, limits the moving position of the moving plate by the moving groove, limits the moving range of the moving plate by the first spring, and drives the first limiting rod to move by moving the moving plate. When the connecting block and the heat dissipation fan are clamped, the two moving plates are squeezed to move to the position close to each other, and then the second limiting rod penetrates the first hole and is connected to the heat dissipation fan, and then the squeezing of the moving plate is released, so that the first spring drives the first limiting rod to move to the original position through the moving plate, penetrates the second hole and is clamped with the second limiting rod, so that the position of the heat dissipation fan and the connecting block after being clamped is fixed, so that the rotation of the rotating shaft can drive the heat dissipation fan to rotate through the connecting block, quickly blow away the hot air between the shell and the motor, so that the heat dissipation fan dissipates heat for the motor, thereby avoiding damage caused by poor heat dissipation of the motor working for a long time in a narrow space.

[0016] 2. The outer rotor motor with increased installation space uses a cooling fan to blow hot air between the outer shell and the motor into the connecting shell, and then discharges it into the inner cavity of the lathe through the exhaust pipe, thereby preventing the hot air blown out by the cooling fan from accumulating in the inner cavity of the lathe, causing the temperature of the inner cavity of the lathe to rise, thereby affecting the heat dissipation effect of the motor during long-term use. The user can drive the first limit rod to move in the fixed shell through the movable plate, control the clamping connection between the first limit rod and the second limit rod, and drive the cooling fan to rotate through the connecting block, so that the cooling fan is easy to load and unload with the rotating shaft and the connecting block, and is convenient to use.

[0017] 3. The outer rotor motor with increased installation space protects the cooling fan by a protective shell to prevent the cooling fan from contacting the components in the inner cavity of the lathe when rotating, thereby affecting the use of the cooling fan. The staff pushes the lever to make the lever drive the fixed block to move, and then clamps the rotating shaft with the outer shell, and then releases the push on the lever. Then the lever returns to its original position under the action of the second spring, so that the lever passes through the rotating shaft and is clamped with the limit hole, thereby limiting the position of the rotating shaft after being clamped with the outer shell, making the position of the rotating shaft and the outer shell stable after being clamped, and making the connection between the rotating shaft and the outer shell easy to disassemble, which is convenient for the subsequent disassembly and cleaning of the rotating shaft, and also convenient for the staff to clean the cooling fan later, maintain the heat dissipation effect of the cooling fan on the motor, and is beneficial to the long-term use of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the connection of the protective cover of the present invention; Figure 3This is a schematic diagram of the three-dimensional structure of the connection piece of the present invention; Figure 4 It is a schematic diagram of a partially cutaway three-dimensional structure of the protective shell of the present invention; Figure 5 For the present invention Figure 4 A is an enlarged schematic diagram of the three-dimensional structure; Figure 6 For the present invention Figure 4 A schematic diagram of the enlarged three-dimensional structure at B; Figure 7 It is a schematic diagram of a partially cutaway three-dimensional structure of the fixed shell of the present invention.

[0019] In the figure: 1. outer shell; 2. connecting piece; 3. motor; 4. rotating shaft; 5. connecting block; 6. cooling fan; 7. fixed shell; 8. movable plate; 9. first spring; 10. first limiting rod; 11. second limiting rod; 12. spring piece; 13. connecting shell; 14. protective shell; 15. limiting tube; 16. fixing block; 17. lever; 18. fixing frame; 19. first moving hole; 20. second spring; 21. protective cover; 22. limiting hole; 23. second moving hole; 24. moving slot. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes an outer rotor motor with increased installation space.

[0022] In a typical implementation of the present application, Figure 1-Figure 7As shown, an outer rotor motor with improved installation space comprises a shell 1, an outer wall of the shell 1 is fixedly connected with a plurality of connecting pieces 2, one end of the connecting piece 2 is fixedly connected with a motor 3, an output end of the motor 3 is fixedly sleeved with a rotating shaft 4, one end of the rotating shaft 4 is fixedly connected with a connecting block 5, one end of the connecting block 5 is movably connected with a heat dissipation fan 6, one end of the heat dissipation fan 6 is fixedly connected with a fixed shell 7, both ends of the fixed shell 7 are provided with moving grooves 24, a moving plate 8 is slidably connected in the moving groove 24, one end between the two moving plates 8 is fixedly connected with a first spring 9, one end of the moving plate 8 is fixedly connected with a first limiting rod 10, both sides of the connecting block 5 are fixedly connected with a second limiting rod 11, both sides of the heat dissipation fan 6 are provided with a first hole, one end of the second limiting rod 11 The hole passes through to one end of the heat dissipation fan 6, and a second hole is opened at one end of the second limiting rod 11. One end of the first limiting rod 10 passes through the second hole to one side of the second limiting rod 11. When in use, a plurality of connecting pieces 2 are fixedly connected through the outer wall of the shell 1, and one end of the connecting piece 2 is fixedly connected to the motor 3. The output end of the motor 3 is fixedly sleeved with a rotating shaft 4, so that after the position of the shell 1 is fixed during use, the position of the motor 3 can be fixed through the connecting piece 2, so that the motor 3 drives the rotating shaft 4 to rotate, and the connecting piece 2 can also be used as a heat sink so that the heat generated by the motor 3 when working is quickly dissipated to the space between the shell 1 and the motor 3. A connecting block 5 is fixedly connected through one end of the rotating shaft 4, and one end of the connecting block 5 is movably connected to the heat dissipation fan 6, so that the rotating shaft 4 can rotate. When the motor 3 is moving, the connecting block 5 will be driven to rotate, thereby driving the heat dissipation fan 6 to rotate, so that the heat dissipation fan 6 blows the heat generated by the motor 3 when it is working to one end of the motor 3. A fixed shell 7 is fixedly connected through one end of the heat dissipation fan 6, so that the heat dissipation fan 6 fixes the position of the fixed shell 7. A moving groove 24 is provided at both ends of the fixed shell 7. A moving plate 8 is slidably connected in the moving groove 24, so that the moving groove 24 limits the moving position of the moving plate 8. A first spring 9 is fixedly connected through one end between the two moving plates 8, so that the first spring 9 limits the moving range of the moving plate 8. A first limiting rod 10 is fixedly connected through one end of the moving plate 8, so that moving the moving plate 8 will drive the first limiting rod 10 to move. Second limiting rods 11 are fixedly connected on both sides of the connecting block 5. , first holes are provided on both sides of the heat dissipation fan 6, one end of the second limiting rod 11 passes through the hole to one end of the heat dissipation fan 6, and a second hole is provided at one end of the second limiting rod 11, and one end of the first limiting rod 10 passes through the second hole to one side of the second limiting rod 11, so that when the connecting block 5 and the heat dissipation fan 6 are clamped, the two movable plates 8 are squeezed to move to a position close to each other, and then the second limiting rod 11 passes through the first hole and is connected to the heat dissipation fan 6, and then the squeezing of the movable plate 8 is released, so that the first spring 9 drives the first limiting rod 10 to move to the original position through the movable plate 8 and passes through the second hole to be clamped with the second limiting rod 11, so that the position of the heat dissipation fan 6 after being clamped with the connecting block 5 is fixed, so that the rotation of the rotating shaft 4 will drive the heat dissipation fan 6 to rotate through the connecting block 5,The hot air between the housing 1 and the motor 3 is blown away quickly, so that the cooling fan 6 can dissipate heat from the motor 3, thus avoiding damage to the motor 3 caused by poor heat dissipation due to long-term operation in a narrow space.

[0023] As a preferred implementation in this embodiment, refer to the attached Figure 5 and Figure 7 , the other end between the two moving plates 8 is fixedly connected with a spring piece 12, one end of the outer shell 1 is fixedly connected with a connecting shell 13, one end of the connecting shell 13 is fixedly sleeved with an exhaust pipe, the first limiting rod 10 is slidably connected to the inner cavity of the fixed shell 7, one end of the moving plate 8 is located in the inner cavity of the fixed shell 7, and the other end of the moving plate 8 passes through the moving groove 24 to the outside of the fixed shell 7, the moving plate 8 is T-shaped, the fixed shell 7 and the first limiting rod 10 are both arc-shaped, the moving groove 24 is an arc-shaped groove, the fixed shell 7, the first limiting rod 10, the moving groove 24 and the cooling fan 6 have the same center, the connecting block 5 includes a hollow circular ring and a hollow polygonal ring, the cooling fan A T-shaped groove is provided in the middle of 6, the heat dissipation fan 6 is movably sleeved with the rotating shaft 4, and the heat dissipation fan 6 is movably sleeved with the hollow polygonal ring of the connecting block 5. A spring piece 12 is fixedly connected with the other end between the two movable plates 8 to improve the position stability of the movable plate 8 and reduce the movement of the first limit rod 10 due to the influence of centrifugal force when the heat dissipation fan 6 is driven to rotate by the rotating shaft 4. A connecting shell 13 is fixedly connected to one end of the outer shell 1, and an exhaust pipe is fixedly sleeved at one end of the connecting shell 13, so that the heat dissipation fan 6 blows the hot air between the outer shell 1 and the motor 3 into the connecting shell 13, and then discharges it from the inner cavity of the lathe through the exhaust pipe, thereby avoiding the heat dissipation fan The hot air blown out by 6 gathers in the inner cavity of the lathe, causing the temperature of the inner cavity of the lathe to rise, thereby affecting the heat dissipation effect of the motor 3 during long-term use. The first limit rod 10 is slidably connected to the inner cavity of the fixed shell 7, one end of the movable plate 8 is located in the inner cavity of the fixed shell 7, and the other end of the movable plate 8 passes through the movable groove 24 to the outside of the fixed shell 7, so that the user can drive the first limit rod 10 to move in the fixed shell 7 through the movable plate 8, and control the clamping of the first limit rod 10 and the second limit rod 11. The movable plate 8 is T-shaped, so that the movable plate 8 is easy to push and use. The fixed shell 7 and the first limit rod 10 are both arc-shaped, and the movable groove 24 is The arc groove, the center of the fixed shell 7, the first limit rod 10, the movable groove 24 and the heat dissipation fan 6 are at the same point, so that the fixed shell 7 and the first limit rod 10 do not interfere with the rotating shaft 4, and reduce the influence of centrifugal force on the connection stability of the first limit rod 10 and the second limit rod 11. The connecting block 5 includes a hollow circular ring and a hollow polygonal ring, and a T-shaped groove is opened in the middle of the heat dissipation fan 6. The heat dissipation fan 6 is movably connected with the rotating shaft 4, and the heat dissipation fan 6 is movably connected with the hollow polygonal ring of the connecting block 5, so that the connecting block 5 can drive the heat dissipation fan 6 to rotate, so that the heat dissipation fan 6 is easy to load and unload with the rotating shaft 4 and the connecting block 5, and is convenient to use.

[0024] As a preferred implementation in this embodiment, refer to the attached Figure 3 , Figure 4 and Figure 6, the other end of the shell 1 is movably connected with two protective shells 14, both sides of the motor 3 are fixedly connected with a limit tube 15, and a fixed block 16 is slidably connected in the limit tube 15. Both sides of the shell 1 are provided with a limit hole 22, and the fixed block 16 passes through the protective shell 14 to the limit hole 22. A second movable hole 23 is provided on one side of the fixed block 16, and a lever 17 is rotatably connected to one end of the fixed block 16. Both sides of the shell 1 are fixedly connected with a fixing frame 18, and one end of the fixing frame 18 is rotatably connected to the lever 17. Both sides of the shell 1 are provided with a first movable hole 19, and one end of the lever 17 passes through the second movable hole 23 and is rotatably connected to the fixed block 16. The other end of the lever 17 passes through the first movable hole 19 to the outside of the shell 1, and one side of the lever 17 is fixedly connected to the second elastic The second spring 20 is fixedly connected to the shell 1, and protective covers 21 are fixedly connected to both sides of the protective shell 14. The heat dissipation fan 6 is located between the two protective covers 21. The protective cover 21 includes a semicircular ring and a plurality of support bars. The diameter of the ring composed of the two semicircular rings is greater than the diameter of the rotating shaft 4. The lever 17 includes a straight rod and a bent rod. The straight rod and the bent rod are fixedly connected. The bent rod is rotatably connected to the fixed block 16. The straight rod passes through the first movable hole 19 and extends to the outside of the shell 1. The side of the protective shell 14 is L-shaped. The protective shell 14 is clamped with the shell 1 and the connecting piece 2. The outer diameter of the protective shell 14 is the same as that of the shell 1. The protective shell 14 is semicircular, and two protective shells 14 are movably clamped through the other end of the shell 1, so that the protective shell 14 protects the heat dissipation fan 6 and avoids To prevent the heat dissipation fan 6 from contacting the components in the inner cavity of the lathe when rotating, thereby affecting the use of the heat dissipation fan 6, both sides of the motor 3 are fixedly connected with a limit tube 15, and a fixed block 16 is slidably connected in the limit tube 15. Both sides of the shell 1 are provided with a limit hole 22, and the fixed block 16 passes through the protective shell 14 to the limit hole 22. A second movable hole 23 is provided on one side of the fixed block 16, and one end of the fixed block 16 is rotatably connected with a lever 17. Both sides of the shell 1 are fixedly connected with a fixing frame 18, and one end of the fixing frame 18 is rotatably connected with the lever 17. Both sides of the shell 1 are provided with a first movable hole 19, one end of the lever 17 passes through the second movable hole 23 and is rotatably connected to the fixed block 16, and the other end of the lever 17 passes through the first movable hole 19 to the outside of the shell 1. A second spring 20 is fixedly connected to one side of the rod 17, and the second spring 20 is fixedly connected to the housing 1, so that when in use, the staff pushes the lever 17, so that the lever 17 drives the fixed block 16 to move, and then the shaft 4 is clamped with the housing 1, and then the push on the lever 17 is released, and then the lever 17 returns to the original position under the action of the second spring 20, so that the lever 17 passes through the shaft 4 and is clamped with the limiting hole 22, thereby limiting the position of the shaft 4 after being clamped with the housing 1, so that the position of the shaft 4 and the housing 1 after being clamped is stable, and the connection between the shaft 4 and the housing 1 is easy to disassemble, which is convenient for the subsequent disassembly and cleaning of the shaft 4, and also convenient for the staff to clean the cooling fan 6 and maintain the cooling effect of the cooling fan 6 on the motor 3, which is beneficial to the long-term use of the motor 3.The protective cover 21 is fixedly connected to both sides of the protective shell 14, and the heat dissipation fan 6 is located between the two protective covers 21. The protective cover 21 includes a semicircular ring and a plurality of support bars. The diameter of the ring composed of the two semicircular rings is greater than the diameter of the shaft 4, so that the protective cover 21 protects the heat dissipation fan 6 to prevent the heat dissipation fan 6 from being affected by other components when rotating, thereby ensuring the smooth operation of the heat dissipation fan 6 and preventing the heat dissipation fan 6 from affecting the normal operation of the shaft 4. The lever 17 includes a straight rod and a bent rod, the straight rod and the bent rod are fixedly connected, the bent rod is rotatably connected to the fixed block 16, and the straight rod passes through the first movable hole 19 and extends to the outside of the housing 1 , so that when the staff pushes the lever 17 to move, the fixed block 16 will move along the limit tube 15. The side of the protective shell 14 is L-shaped, and the protective shell 14 is clamped with the outer shell 1 and the connecting piece 2, so that the position of the protective shell 14 will be initially fixed by the outer shell 1 and the connecting piece 2, thereby facilitating the subsequent fixation of the protective shell 14 by the fixed block 16, and facilitating the loading and unloading of the staff. The outer diameters of the protective shell 14 and the outer shell 1 are the same, and the protective shell 14 is semicircular, so that the protective shell 14 has a better protective effect on the cooling fan 6, and the protective shell 14 has less impact on the use of the motor 3 after installation, thereby improving the practicality of the motor 3. ,

[0025] The working principle of the present invention is as follows: when in use, after the position of the outer shell 1 is fixed, the position of the motor 3 can be fixed by the connecting piece 2, and when the rotating shaft 4 rotates, the connecting block 5 is driven to rotate, thereby driving the heat dissipation fan 6 to rotate, so that the heat dissipation fan 6 blows the heat generated by the motor 3 when the motor 3 is working to one end of the motor 3, and the position of the fixed shell 7 is fixed by the heat dissipation fan 6, and the moving position of the moving plate 8 is limited by the moving groove 24, and the moving range of the moving plate 8 is limited by the first spring 9. When the moving plate 8 is moved, the first limiting rod 10 is driven to move, and when the connecting block 5 and the heat dissipation fan 6 are clamped, the two moving plates 8 are squeezed. The first and second limit rods 11 are moved to positions close to each other, and then the second limit rod 11 passes through the first hole and is connected to the heat dissipation fan 6. After that, the squeezing of the movable plate 8 is released, so that the first spring 9 drives the first limit rod 10 to move to the original position through the movable plate 8, passes through the second hole and is clamped with the second limit rod 11, so that the position of the heat dissipation fan 6 and the connecting block 5 after being clamped is fixed, so that the rotation of the rotating shaft 4 will drive the heat dissipation fan 6 to rotate through the connecting block 5, and quickly blow away the hot air between the housing 1 and the motor 3, so that the heat dissipation fan 6 dissipates the heat for the motor 3, thereby avoiding damage caused by poor heat dissipation of the motor 3 due to long-term operation in a narrow space.

[0026] The heat dissipation fan 6 blows the hot air between the outer shell 1 and the motor 3 into the connecting shell 13, and then discharges it into the inner cavity of the lathe through the exhaust pipe, so as to prevent the hot air blown out by the heat dissipation fan 6 from accumulating in the inner cavity of the lathe, causing the temperature of the inner cavity of the lathe to rise, thereby affecting the heat dissipation effect of the motor 3 during long-term use. The user can drive the first limit rod 10 to move in the fixed shell 7 through the movable plate 8, control the clamping connection between the first limit rod 10 and the second limit rod 11, and drive the heat dissipation fan 6 to rotate through the connecting block 5, so that the heat dissipation fan 6 is easy to load and unload with the rotating shaft 4 and the connecting block 5, and is convenient to use.

[0027] The heat dissipation fan 6 is protected by the protective shell 14 to prevent the heat dissipation fan 6 from contacting the components in the inner cavity of the lathe when rotating, thereby affecting the use of the heat dissipation fan 6. The staff pushes the lever 17 so that the lever 17 drives the fixing block 16 to move, and then the shaft 4 is clamped with the shell 1, and then the push on the lever 17 is released. Then the lever 17 returns to its original position under the action of the second spring 20, so that the lever 17 passes through the shaft 4 and is clamped with the limiting hole 22, thereby limiting the position of the shaft 4 after being clamped with the shell 1, making the position of the shaft 4 and the shell 1 stable after being clamped, and making the connection between the shaft 4 and the shell 1 easy to disassemble, which is convenient for the subsequent disassembly and cleaning of the shaft 4, and also convenient for the staff to clean the heat dissipation fan 6, maintain the heat dissipation effect of the heat dissipation fan 6 on the motor 3, and is beneficial to the long-term use of the motor 3. The heat dissipation fan 6 is protected by the protective cover 21 to prevent the heat dissipation fan 6 from being affected by other components when rotating, thereby ensuring the smooth operation of the heat dissipation fan 6, and making the heat dissipation fan 6 not affect the normal operation of the shaft 4.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An outer rotor motor with increased installation space, characterized in that: The invention comprises a shell (1), wherein the outer wall of the shell (1) is fixedly connected to a plurality of connecting pieces (2), one end of the connecting piece (2) is fixedly connected to a motor (3), the output end of the motor (3) is fixedly sleeved with a rotating shaft (4), one end of the rotating shaft (4) is fixedly connected to a connecting block (5), one end of the connecting block (5) is movably connected to a heat dissipation fan (6), one end of the heat dissipation fan (6) is fixedly connected to a fixed shell (7), both ends of the fixed shell (7) are provided with movable grooves (24), a movable plate (8) is slidably connected in the movable groove (24), and two A first spring (9) is fixedly connected to one end of the movable plate (8), a first limiting rod (10) is fixedly connected to one end of the movable plate (8), second limiting rods (11) are fixedly connected to both sides of the connecting block (5), first holes are provided on both sides of the heat dissipation fan (6), one end of the second limiting rod (11) passes through the holes to one end of the heat dissipation fan (6), a second hole is provided at one end of the second limiting rod (11), and one end of the first limiting rod (10) passes through the second hole to one side of the second limiting rod (11).

2. The outer rotor motor with increased installation space according to claim 1, characterized in that: A spring sheet (12) is fixedly connected to the other end between the two movable plates (8).

3. The outer rotor motor with increased installation space according to claim 1, characterized in that: One end of the outer shell (1) is fixedly connected to a connecting shell (13), and one end of the connecting shell (13) is fixedly sleeved with an exhaust pipe.

4. The outer rotor motor with increased installation space according to claim 1, characterized in that: The first limiting rod (10) is slidably connected to the inner cavity of the fixed shell (7), one end of the movable plate (8) is located in the inner cavity of the fixed shell (7), and the other end of the movable plate (8) passes through the movable groove (24) to the outside of the fixed shell (7).

5. The outer rotor motor with increased installation space according to claim 1, characterized in that: The movable plate (8) is T-shaped, the fixed shell (7) and the first limiting rod (10) are both arc-shaped, the movable groove (24) is an arc-shaped groove, and the centers of the fixed shell (7), the first limiting rod (10), the movable groove (24) and the cooling fan (6) are the same point.

6. The outer rotor motor with increased installation space according to claim 1, characterized in that: The connecting block (5) comprises a hollow circular ring and a hollow polygonal ring, a T-shaped groove is provided in the middle of the heat dissipation fan (6), the heat dissipation fan (6) is movably sleeved with the rotating shaft (4), and the heat dissipation fan (6) is movably sleeved with the hollow polygonal ring of the connecting block (5).

7. The outer rotor motor with increased installation space according to claim 6, characterized in that: The other end of the housing (1) is movably connected to two protective shells (14), both sides of the motor (3) are fixedly connected to a limit tube (15), a fixed block (16) is slidably connected inside the limit tube (15), both sides of the housing (1) are provided with a limit hole (22), the fixed block (16) passes through the protective shell (14) to the limit hole (22), one side of the fixed block (16) is provided with a second movable hole (23), one end of the fixed block (16) is rotatably connected to a lever (17), and both sides of the housing (1) are provided with a limit hole (22). Both are fixedly connected to a fixing frame (18), one end of the fixing frame (18) is rotatably connected to a lever (17), both sides of the housing (1) are provided with a first moving hole (19), one end of the lever (17) passes through the second moving hole (23) and is rotatably connected to the fixing block (16), the other end of the lever (17) passes through the first moving hole (19) to the outside of the housing (1), one side of the lever (17) is fixedly connected to a second spring (20), and the second spring (20) is fixedly connected to the housing (1).

8. The outer rotor motor with increased installation space according to claim 7, characterized in that: Protective covers (21) are fixedly connected to both sides of the protective shell (14); the heat dissipation fan (6) is located between the two protective covers (21); the protective cover (21) comprises a semicircular ring and a plurality of support bars; the diameter of the ring formed by the two semicircular rings is greater than the diameter of the rotating shaft (4).

9. The outer rotor motor with increased installation space according to claim 7, characterized in that: The shifting rod (17) comprises a straight rod and a bent rod, the straight rod and the bent rod are fixedly connected, the bent rod is rotatably connected to the fixed block (16), and the straight rod passes through the first movable hole (19) and extends to the outside of the housing (1).

10. The outer rotor motor with increased installation space according to claim 7, characterized in that: The side surface of the protective shell (14) is L-shaped, the protective shell (14) is snap-connected with the outer shell (1) and the connecting piece (2), the outer diameter of the protective shell (14) and the outer shell (1) are the same, and the protective shell (14) is semicircular.

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