Motor and drive system

Abstract

A motor and a drive system are provided, and maintenance of a sensor is easy. A motor (10) is provided with: a rotor (12); a motor housing (20); an output shaft (14) protruding from the rotor to the outside of the motor housing along a rotation axis (11) and connected to a load (2); a flange member (50) rotatably attached to the outer periphery of the output shaft (14) at a position separated from the motor housing; a cover member (60) that surrounds a space between the flange member (50) and the motor housing (20) around a rotation axis and is detachably attached to the flange member (50) and the motor housing (20); and a sensor (30) which is housed in the space and detects the rotation of the output shaft (14), the cover member (60) being capable of sliding in the protruding direction of the output shaft (14) with respect to the flange member (50) such that the sensor (30) is exposed in a state in which the cover member (60) is detached from the flange member (50) and the motor housing (20).

Description

Technical Field

[0001] This disclosure relates to motors and drive systems. Background Technology

[0002] Patent document 1 discloses a brushless motor comprising: a housing and a bracket for housing and holding a rotor; and a rotary transformer for detecting the rotational position of the rotor within the bracket.

[0003] Patent document 1: Japanese Patent Application Publication No. 2004-23840. Utility Model Content

[0004] This disclosure provides a motor and drive system for easy sensor maintenance.

[0005] One aspect of the motor disclosed herein includes: a rotor that rotates about a rotation axis; a motor housing that houses the rotor and holds the rotor along the rotation axis; an output shaft that protrudes from the rotor outward from the motor housing along the rotation axis and is connected to a load; a flange member that is rotatably fitted to the outer periphery of the output shaft at a position separate from the motor housing; a cover member that surrounds the space between the flange member and the motor housing about the rotation axis and is detachably mounted on the flange member and the motor housing; and a sensor housed in the space, wherein the cover member, when detached from the flange member and the motor housing, is capable of sliding relative to the flange member toward the protruding direction of the output shaft in a manner that exposes the sensor.

[0006] Furthermore, in the aforementioned motor, the length of the output shaft protruding from the cover member mounted on the flange member and the motor housing may be longer than the sliding length of the cover member used to expose the sensor.

[0007] Furthermore, in the aforementioned motor, the cover component may also include: a sleeve extending from around the flange component to the motor housing; a first flange extending outward from the end of the sleeve facing the motor housing and mounted to the motor housing from the protruding direction of the output shaft; and a second flange extending inward from the end of the sleeve facing the side separated from the motor housing and mounted to the flange component from the protruding direction of the output shaft.

[0008] Furthermore, in the aforementioned motor, the flange member may have one or more pins protruding in the direction of the output shaft, and the second flange may have one or more holes through which the one or more pins pass.

[0009] Furthermore, in the aforementioned motor, it is also possible that external threads are formed on the outer periphery of each of the more than one pins, and the second flange is installed on the flange component by screwing a nut into the external threads.

[0010] Furthermore, in the aforementioned motor, the motor may also have a second output shaft that protrudes from the rotor out of the motor housing in a direction opposite to the protruding direction of the output shaft and is connected to a second load.

[0011] Another aspect of the drive system disclosed herein includes: the aforementioned motor; a load; and a coupling mounted on the outer periphery of the output shaft to connect the output shaft to the load, wherein the outer diameter of the flange member is larger than the outer diameter of the coupling, and the inner diameter of the cover member is larger than the outer diameter of the coupling.

[0012] Furthermore, in the aforementioned drive system, the length from the end of the cover component mounted on the flange component and the motor housing to the end of the coupling in the protruding direction of the output shaft may be longer than the sliding length of the cover component used to expose the sensor.

[0013] According to this disclosure, a motor and drive system that are easy to maintain for a rotary sensor can be provided. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view illustrating the structure of the drive system.

[0015] Figure 2 This is an example Figure 1 An enlarged view of the sensor housing unit.

[0016] Figure 3 This is an example of making Figure 2 The diagram shows the state of the cover component after it has slid.

[0017] Label Explanation

[0018] 1 Drive system; 2 Load; 10 Motor; 11 Rotating shaft; 12 Rotor; 20 Motor housing; 14 Output shaft; 15 Second output shaft; 70 Coupling; 3 Second load; 30 Sensor; 50 Flange component; 60 Cover component; 61 Sleeve; 62 First flange; 63 Second flange; 53 Pin; 64 Hole; 55 External thread; 91 Nut; 73 End; 66 End. Detailed Implementation

[0019] Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings. In the description, the same reference numerals are used to denote the same elements or elements having the same function, and repeated descriptions are omitted.

[0020] Figure 1The drive system 1 shown includes a load 2, a motor 10, and a coupling 70. The load 2 is not particularly limited; it can be any load as long as it is driven by the rotation of the motor 10. As an example, the load 2 is a spool in the winch of a crane that raises and lowers a basket or pallet carrying a transported object. Other examples of load 2 include rotating blades of a pump or fan, or wheels.

[0021] Motor 10 is, for example, electric, consuming electricity to drive load 2. For example, motor 10 generates rotational torque to drive load 2 based on the supply of electricity. Motor 10 has a rotor 12, a stator 13, a motor housing 20, and an output shaft 14. Rotor 12 rotates about axis of rotation 11. In the figure, axis of rotation 11 is horizontal, but the orientation of axis of rotation 11 is not necessarily limited to horizontal.

[0022] The stator 13 surrounds the rotor 12, causing the rotor 12 to rotate about the axis of rotation 11. For example, the motor 10 is a synchronous motor, with an armature coil in the stator 13 and an excitation magnet in the rotor 12. The stator 13 is subjected to rotational torque according to the power supply to the armature coil. The motor 10 may also have an armature coil in the rotor 12 and an excitation magnet in the stator 13.

[0023] Motor 10 can also be an induction motor, and can have a primary coil in stator 13 and a secondary coil in rotor 12. Motor 10 can also have a primary coil in rotor 12 and a secondary coil in stator 13.

[0024] The motor housing 20 houses the rotor 12 and the stator 13 and is fixed near the load 2. For example, if the load 2 is a winch spool, the motor housing 20 is fixed to the winch frame. The motor housing 20 holds the rotor 12 along the rotation axis 11, allowing the rotor 12 to rotate freely about the rotation axis 11. For example, the motor housing 20 has a frame 21 and end brackets 22 and 23. The frame 21 is a cylindrical component that surrounds the rotor 12 and the stator 13 about the rotation axis 11. The frame 21 is not limited to a cylindrical component. For example, the frame 21 can also be a cylindrical component with a polygonal cross-section. The stator 13 is fixed to the inner circumference of the frame 21. The end brackets 22 and 23 seal both ends of the frame 21.

[0025] Output shaft 14 protrudes from rotor 12 toward motor housing 20 along rotation axis 11 and is connected to load 2. For example, output shaft 14 protrudes toward motor housing 20 through shaft hole 24 formed in end bracket 22. Motor 10 may also have a second output shaft 15. Second output shaft 15 protrudes from rotor 12 toward motor housing 20 in a direction opposite to the protrusion direction of output shaft 14. For example, second output shaft 15 protrudes toward motor housing 20 through shaft hole 25 formed in end bracket 23.

[0026] End bracket 22 holds the output shaft 14 peripherally via bearing 16 disposed within shaft bore 24. End bracket 23 holds the second output shaft 15 peripherally via bearing 17 disposed within shaft bore 25. Thus, rotor 12 is held to rotate freely about the axis of rotation 11. Bearings 16 and 17 are, for example, roller bearings, ball bearings, or sleeve bearings.

[0027] The output shaft 14, protruding from the end bracket 22 outside the motor housing 20, is connected to the load 2 via a coupling 70. The coupling 70 is fitted around the outer periphery of the output shaft 14, connecting the output shaft 14 to the load 2. For example, the coupling 70 has a hub 71 and a flange 72. The hub 71 is cylindrical and fitted around the outer periphery of the output shaft 14. The hub 71 is fitted around the outer periphery of the output shaft 14 in a manner that does not rotate relative to the output shaft 14, via a key or the like. The flange 72 is connected to the end of the hub 71 and extends outward (away from the axis of rotation 11) from the outer periphery of the hub 71 throughout the entire circumference of the axis of rotation 11. The flange 72 is secured to the load 2 in its protruding direction toward the output shaft 14 by one or more fasteners such as bolts. "End" refers to the distal end relative to the motor housing 20. The same applies hereinafter.

[0028] In addition to the output shaft 14 being connected to the load 2, the second output shaft 15 can also be connected to the second load 3. In this case, the load 2 and the second load 3 can be driven synchronously. As an example of the load 2 and the second load 3 being driven synchronously, a pair of spools in a crane winch are provided with a pair of lifting lines wound on them respectively.

[0029] For example, the drive system 1 may also include a second coupling 80, through which the second output shaft 15 can be connected to the second load 3. The second coupling 80 is fitted around the outer periphery of the second output shaft 15, connecting the second output shaft 15 to the second load 3. For example, the second coupling 80 has a second hub 81 and a second flange 82. The second hub 81 is cylindrical and fitted around the outer periphery of the second output shaft 15. The second hub 81 is fitted around the outer periphery of the second output shaft 15 in a manner that does not rotate relative to the second output shaft 15, by means of a key or the like. The second flange 82 is connected to the end of the second hub 81 and extends outward (away from the rotation axis 11) from the outer periphery of the second hub 81 throughout the entire circumference of the rotation axis 11. The second flange 82 is fixed to the second load 3 in the protruding direction toward the second output shaft 15 by one or more fasteners such as bolts.

[0030] Sensor 30, for example, is a rotation sensor that detects the rotation of the output shaft 14 between the coupling 70 and the motor housing 20 (between the coupling 70 and the end bracket 22). Detecting rotation involves generating an electrical signal corresponding to the rotation of the output shaft 14. For example, sensor 30 is a pulse generator that generates a pulsed electrical signal corresponding to the rotation of the output shaft 14.

[0031] For example, sensor 30 has an encoder disk 31 and a sensor head 32. The encoder disk 31 is mounted on the outer periphery of the output shaft 14 and rotates together with the output shaft 14. Multiple sectors are formed on the encoder disk 31 at regular intervals along the circumference of the rotation axis 11. The sensor head 32 is mounted on the end bracket 22 around the encoder disk 31. Whenever each of the aforementioned sectors passes through the sensor head 32 by means of the rotation of the encoder disk 31, the sensor head 32 generates a pulse-like electrical signal. Thus, a pulse signal with a frequency proportional to the rotational speed of the encoder disk 31 is generated.

[0032] Each of the aforementioned sectors can be an optically readable marker, and the sensor head 32 can be a photosensitive sensor. Alternatively, each of the aforementioned sectors can be a magnetically readable marker, and the sensor head 32 can be a Hall effect sensor.

[0033] The rotation sensor only needs to detect at least the rotation of the output shaft 14 and is not necessarily limited to a pulse generator. For example, the rotation sensor can be a tachometer sensor or a rotary transformer. The sensor 30 is not necessarily limited to a rotation sensor. For example, the sensor 30 can also be a temperature sensor or a pressure sensor, etc., that detects the environment surrounding the output shaft 14.

[0034] To protect the sensor 30, the motor 10 also has a sensor cover unit 40. The sensor cover unit 40 covers the sensor 30 from both the outer peripheral direction of the output shaft 14 and the protruding direction of the output shaft 14.

[0035] To maintain sensor 30, the sensor housing unit 40 needs to be removed from around sensor 30 to expose sensor 30. For example, by sliding sensor housing unit 40 toward the protruding direction of output shaft 14, sensor 30 is exposed toward the outer periphery of output shaft 14, thereby enabling maintenance of sensor 30 (e.g., inspection, repair, or replacement of encoder disc 31 or sensor head 32). However, the sliding of sensor housing unit 40 toward the protruding direction of output shaft 14 may be restricted by coupling 70 or the like. When the sliding of sensor housing unit 40 is restricted by coupling 70, maintenance of sensor 30 requires removing load 2 and coupling 70 from output shaft 14. Therefore, the maintenance work for sensor 30 becomes extensive.

[0036] In contrast, such as Figure 2As shown, the sensor housing unit 40 has a flange member 50 and a housing member 60. The flange member 50 is rotatably mounted on the outer periphery of the output shaft 14 at a position separated from the motor housing 20 (end bracket 22). The flange member 50 extends outward (away from the rotation axis 11) from the output shaft 14 throughout its entire circumference. For example, the flange member 50 has a flange body 51 and a sealing member 52. The flange body 51 is an annular plate surrounding the output shaft 14. The sealing member 52 is mounted on the flange body 51 in a manner that seals the inner circumferential surface of the flange body 51 and the outer circumferential surface of the output shaft 14 throughout its entire circumference. For example, the sealing member 52 is a mechanical seal that allows rotation of the output shaft 14 relative to the flange body 51 and is in close contact with the outer circumferential surface of the output shaft 14. The sealing member 52 may not need to be in close contact with the outer circumferential surface of the output shaft 14, or a gap may be formed between the sealing member 52 and the outer circumferential surface of the output shaft 14.

[0037] The sensor 30 is housed in the space 41 between the flange member 50 and the motor housing 20 (end bracket 22). A cover member 60 surrounds the space 41 between the flange body 51 and the end bracket 22 about the rotation axis 11, and is detachably mounted on the flange member 50 and the end bracket 22. The cover member 60 may surround the space 41 entirely around the rotation axis 11, or it may partially surround the space 41 about the rotation axis 11. When the cover member 60 is removed from the flange body 51 and the end bracket 22, it can slide relative to the flange member 50 in the direction of protrusion toward the output shaft 14, such that the sensor 30 is exposed in the outward peripheral direction.

[0038] In this way, the sensor cover unit 40, with its structure consisting of a flange component 50 and a cover component 60, allows the inner diameter of the cover component 60 to be larger than the outer diameter of the coupling 70, which is mounted on the output shaft 14 for connection with the load 2. This allows the cover component 60 to slide while the coupling 70 is mounted, exposing the sensor 30 to the outer periphery. Therefore, the maintenance of the sensor 30 is easy.

[0039] For example, the outer diameter of the flange component 50 is larger than the outer diameter of the coupling 70, and the inner diameter of the cover component 60 is larger than the outer diameter of the coupling 70. Therefore, the sensor 30 can be maintained without removing the coupling 70 from the output shaft 14.

[0040] The outer diameter of the coupling 70 does not have to be the maximum outer diameter of the coupling 70; it can also be the outer diameter of the portion of the coupling 70 closest to the end bracket 22. For example, the outer diameter of the coupling 70 can also be the outer diameter of the portion of the coupling 70 other than the flange 72 (e.g., the outer diameter of the hub 71).

[0041] The cover component 60 may also have a sleeve 61, a first flange 62, and a second flange 63. The sleeve 61 is a cylindrical component extending from the periphery of the flange component 50 to the end bracket 22. The first flange 62 extends outward (away from the rotation axis 11) from the end of the sleeve 61 facing the end bracket 22, and is mounted to the end bracket 22 from the protruding direction of the output shaft 14. The second flange 63 extends inward (closer to the rotation axis 11) from the end of the sleeve 61 facing the side separated from the end bracket 22, and is mounted to the flange component 50 from the protruding direction of the output shaft 14. By making the end bracket 22 and the cover component 60 face to face from the protruding direction of the output shaft 14, and making the cover component 60 and the flange component 50 face to face, the gap between the end bracket 22 and the cover component 60, and the gap between the cover component 60 and the flange component 50, can be easily reduced. When the cover component 60 has a first flange 62 and a second flange 63, the inner diameter of the second flange 63 is larger than the outer diameter of the coupling 70 (the outer diameter of the hub 71).

[0042] Alternatively, the flange component 50 may have one or more pins 53, and the second flange 63 may have one or more holes 64. One or more pins 53 protrude from the flange body 51 toward the output shaft 14. One or more holes 64 allow one or more pins 53 to pass through.

[0043] With one or more pins 53 passing through one or more holes 64 respectively, the cover member 60 can be mounted on the end bracket 22 and the flange member 50. This suppresses rotation of the flange member 50 during the installation of the cover member 60, improving the ease of installation. The flange member 50 may also have a plurality of pins 53 arranged circumferentially about the rotation axis 11. Correspondingly, the second flange 63 may also have a plurality of holes 64 corresponding to the plurality of pins 53 respectively.

[0044] Alternatively, an external thread 55 may be formed around the outer periphery of one or more pins 53, with the thread 55 being parallel to the axis of rotation 11. The second flange 63 may also be mounted to the flange body 51 from the protruding direction of the output shaft 14 by screwing the nut 91 into the external thread 55. By utilizing one or more pins 53 as fastening components, the number of components can be reduced.

[0045] For example, the flange body 51 has one or more internally threaded holes 54. One or more bolts 92 are screwed into each of the one or more internally threaded holes 54 in the protruding direction toward the output shaft 14. Each of the one or more bolts 92 protrudes from one or more internally threaded holes 54 in the protruding direction toward the output shaft 14. The portions of the one or more bolts 92 that protrude from each of the one or more internally threaded holes 54 respectively constitute one or more pins 53. The one or more bolts 92 may also be fixed to the one or more internally threaded holes 54 by, for example, adhesive bonding.

[0046] The first flange 62 can also be mounted to the end bracket 22 from the protruding direction of the output shaft 14 by one or more bolts 93. For example, the end bracket 22 may have one or more internally threaded holes 26 for screwing in one or more bolts 93 respectively, and the first flange 62 may have one or more holes 65 for passing through one or more bolts 93 respectively. The end bracket 22 may also have a plurality of internally threaded holes 26 arranged circumferentially about the axis of rotation 11. Correspondingly, the first flange 62 may also have a plurality of holes 65 corresponding to the plurality of internally threaded holes 26 respectively.

[0047] In the protruding direction of the output shaft 14, the length L1 from the end 66 of the cover member 60 mounted on the flange member 50 and the end bracket 22 to the end 73 of the coupling 70 can be longer than the sliding length L2 of the cover member 60 used to expose the sensor 30. Based on this length relationship, as... Figure 3 As shown, by sliding the cover member 60 to the outer periphery of the coupling 70, the sensor 30 can be exposed. Therefore, the operability of maintaining the sensor 30 without removing the coupling 70 from the output shaft 14 can be further improved. The end 73 of the coupling 70 can also be the end of a portion other than the flange 72 (e.g., the hub 71). Exposing the sensor 30 means exposing the entire area of ​​the sensor 30 in the direction along the rotation axis 11 toward the outer periphery of the output shaft 14.

[0048] The overall length of the hub 71 along the rotation axis 11 can also be longer than the overall length of the cover component 60. This can further improve the operability of maintaining the sensor 30.

[0049] The length L3 by which the output shaft 14 protrudes from the cover member 60 mounted on the flange member 50 and the end bracket 22 can also be longer than the sliding length L2 of the cover member 60 used to expose the sensor 30. Based on this length relationship, the operability of maintaining the sensor 30 can be further improved.

[0050] The embodiments illustrated above include the following structures.

[0051] (1) A motor 10 comprising: a rotor 12 that rotates about a rotation axis 11; a motor housing 20 that houses the rotor 12 and holds the rotor 12 along the rotation axis 11; an output shaft 14 that protrudes from the rotor 12 outwards from the motor housing 20 along the rotation axis 11 and is connected to a load 2; a flange member 50 that is rotatably mounted to the outer periphery of the output shaft 14 at a position separate from the motor housing 20; a cover member 60 that surrounds the space between the flange member 50 and the motor housing 20 about the rotation axis 11 and is detachably mounted to the flange member 50 and the motor housing 20; and a sensor 30 that is housed in the space and detects the rotation of the output shaft 14, wherein the cover member 60, when removed from the flange member 50 and the motor housing 20, is slidable relative to the flange member 50 toward the protruding direction of the output shaft 14 such that the sensor 30 is exposed.

[0052] When the output shaft 14 needs to be removed from the load 2 to remove the sensor 30, the maintenance of the sensor 30 becomes extensive. In contrast, in this motor 10, outside the motor housing 20, the component covering the storage space of the rotation angle sensor is divided into two parts: a flange component 50 and a cover component 60. Therefore, the inner diameter of the cover component 60 is larger than the outer diameter of the connecting component (e.g., coupling 70) assembled to the output shaft 14 for connection with the load 2, allowing the cover component 60 to slide while the connecting component is assembled, exposing the sensor 30. Thus, the maintenance of the sensor 30 is easier.

[0053] (2) The motor 10 according to (1), wherein the length of the output shaft 14 protruding from the cover member 60 mounted on the flange member 50 and the motor housing 20 is longer than the sliding length of the cover member 60 used to expose the sensor 30.

[0054] Sensor 30 is easier to maintain.

[0055] (3) The motor 10 according to (1) or (2), wherein the cover member 60 has: a sleeve 61 extending from the periphery of the flange member 50 to the motor housing 20; a first flange 62 extending outward from the end of the sleeve 61 toward the motor housing 20 and mounted to the motor housing 20 in the protruding direction of the output shaft 14; and a second flange 63 extending inward from the end of the sleeve 61 toward the side separated from the motor housing 20 and mounted to the flange member 50 in the protruding direction of the output shaft 14.

[0056] By making the motor housing 20 and the cover member 60 face to face from the protruding direction of the output shaft 14, and making the cover member 60 and the flange member 50 face to face, the gap between the motor housing 20 and the cover member 60, and the gap between the cover member 60 and the flange member 50 can be easily reduced.

[0057] (4) The motor 10 according to (3), wherein the flange member 50 has one or more pins 53 protruding in a protruding direction toward the output shaft 14, and the second flange 63 has one or more holes 64 through which one or more pins 53 pass.

[0058] With one or more pins 53 passing through one or more holes 64 respectively, the cover member 60 can be installed on the motor housing 20 and the flange member 50. This suppresses rotation of the flange member 50 during the installation process of the cover member 60, improving the ease of installation of the cover member 60.

[0059] (5) The motor 10 according to (4) wherein an external thread 55 is formed on the outer periphery of one or more pins 53, and the second flange 63 is installed on the flange member 50 by screwing a nut 91 into the external thread 55.

[0060] By utilizing pin 53 as a fastening component, the number of components can be reduced.

[0061] (6) The motor 10 according to (1) or (2), wherein the motor 10 further has a second output shaft 15 that protrudes from the rotor 12 toward the motor housing 20 in a direction opposite to the protrusion direction of the output shaft 14 and is connected to the second load 3.

[0062] Since the sensor 30 can be maintained while the motor 10 is connected to both the load 2 and the second load 3, the maintenance of the sensor 30 is easier.

[0063] (7) A drive system 1 comprising: a motor 10 as described in (1) or (2); a load 2; and a coupling 70, which is mounted on the outer periphery of an output shaft 14 to connect the output shaft 14 to the load 2, wherein the outer diameter of a flange member 50 is larger than the outer diameter of the coupling 70, and the inner diameter of a cover member 60 is larger than the outer diameter of the coupling 70.

[0064] The sensor 30 can be maintained without removing the coupling 70 from the output shaft 14.

[0065] (8) The drive system 1 according to (7) wherein, in the protruding direction of the output shaft 14, the length from the end 66 of the cover member 60 mounted on the flange member 50 and the motor housing 20 to the end 66 of the coupling 70 is longer than the sliding length of the cover member 60 used to expose the sensor 30.

[0066] This can further improve the operability of maintaining the sensor 30 without removing the coupling 70 from the output shaft 14.

[0067] The above describes the implementation methods, but the present invention is not necessarily limited to the above implementation methods, and various modifications can be made without departing from its spirit.

Claims

1. A motor, characterized in that, The motor has the following features: The rotor rotates about its axis of rotation. A motor housing that houses the rotor and holds the rotor along the axis of rotation; An output shaft that protrudes from the rotor out of the motor housing along the axis of rotation and is connected to the load; A flange component that is rotatably mounted to the outer periphery of the output shaft at a position separate from the motor housing; A cover component that surrounds the space between the flange component and the motor housing about the axis of rotation, and is detachably mounted on the flange component and the motor housing; as well as The sensor is housed within the space. When the cover component is removed from the flange component and the motor housing, it can slide relative to the flange component toward the protruding direction of the output shaft in a manner that exposes the sensor.

2. The motor according to claim 1, characterized in that, The length of the output shaft protruding from the cover member mounted on the flange member and the motor housing is longer than the sliding length of the cover member used to expose the sensor.

3. The motor according to claim 1 or 2, characterized in that, The cover component has: A sleeve that extends from around the flange member to the motor housing; A first flange extends outward from the end of the sleeve facing the motor housing and is mounted to the motor housing from the projecting direction of the output shaft; as well as The second flange extends inward from the end of the sleeve facing the side separated from the motor housing and is mounted to the flange component from the protruding direction of the output shaft.

4. The motor according to claim 3, characterized in that, The flange component has one or more pins projecting in a projection direction toward the output shaft. The second flange has one or more holes through which the one or more pins pass.

5. The motor according to claim 4, characterized in that, Each of the more than one pins has an external thread formed on its outer periphery. The second flange is installed on the flange component by screwing the nut into the external thread.

6. The motor according to claim 1 or 2, characterized in that, The motor also has a second output shaft that protrudes from the rotor out of the motor housing in a direction opposite to the protrusion direction of the output shaft and is connected to a second load.

7. A drive system, characterized in that, The drive system includes: The motor according to claim 1 or 2; The load; and A coupling, which is mounted on the outer periphery of the output shaft, connects the output shaft to the load. The outer diameter of the flange component is larger than the outer diameter of the coupling. The inner diameter of the cover component is larger than the outer diameter of the coupling.

8. The drive system according to claim 7, characterized in that, In the protruding direction of the output shaft, the length from the end of the cover member mounted on the flange member and the motor housing to the end of the coupling is longer than the sliding length of the cover member used to expose the sensor.

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