Rotor lock structure assembly

Abstract

The utility model belongs to the technical field of automobiles, and provides a rotor lock structure assembly, which comprises a shell, a rotor, a lock body and a lock body, the driving assembly is arranged in the mounting containing cavity, a telescopic rod is arranged on the driving assembly, and when the output end of the driving assembly rotates, the telescopic rod can be driven to do linear reciprocating motion in the axis direction of the telescopic rod; the lock pin and the elastic piece are both coaxially arranged with the telescopic rod, the telescopic rod and the elastic piece are both movably arranged on the lock pin in a sleeving mode, one end of the elastic piece abuts against the telescopic rod, and the other end of the elastic piece abuts against the lock pin. Compared with the prior art, the lock pin locking device has the advantages that the compression force applied to the elastic piece when the telescopic rod moves can ensure that the lock pin accurately achieves the locking function on the lock pin by means of elastic reset; the phenomenon that the fluency and stability of the locking pin in the rotor locking process are affected by machining or matching errors of the output bevel gear and the telescopic rod is effectively avoided, meanwhile, normal output operation of the driving piece is guaranteed, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles, and particularly relates to a rotor lock structure assembly. Background Art

[0002] With the rapid development of technology, in order to meet the usage requirements of people, the quality during product operation becomes particularly important.

[0003] As Figure 2 shown, most of the current rotary supply devices on the market convert the conventional rotary motion into the linear motion of a telescopic rod. By the fixed connection between the telescopic rod and the locking pin, the telescopic rod can drive the locking pin to lock the external rotor. However, due to certain processing and fitting errors between the driving component and the telescopic rod, after the motor reaches the corresponding rotational speed, the locking pin cannot accurately reach the corresponding position to lock the rotor, which not only seriously affects the smoothness and stability of the rotor locking process of the rotor lock structure, but also easily causes damage to the motor, thereby shortening the service life. Summary of the Utility Model

[0004] Aiming at the above deficiencies existing in the prior art, the technical problem to be solved by the utility model is to provide a rotor lock structure assembly.

[0005] The technical solution adopted by the utility model to solve its technical problem is to provide a rotor lock structure assembly for realizing the locking of a rotor, including: a housing, an installation cavity is formed inside it;

[0006] A driving component, which is arranged in the installation cavity. A telescopic rod is arranged on the driving component, and when the driving component makes a rotational motion at its output end, it can drive the telescopic rod to make a linear reciprocating motion along its axis direction;

[0007] A locking pin and an elastic member are both arranged coaxially with the telescopic rod. The telescopic rod and the elastic member are both sleeved on the locking pin movably. One end of the elastic member abuts against the telescopic rod, and the other end abuts against the locking pin;

[0008] The elastic member can be compressed and contracted when the telescopic rod makes a linear motion, and due to the elastic reset of the elastic member, it can push the locking pin to extend out of the housing to lock the rotor, so as to eliminate the driving error of the driving component.

[0009] In the above rotor lock structure assembly, the telescopic rod is a lead screw, and an extension block is formed at the end of the telescopic rod along its radial direction. A limiting block is formed on the locking pin along its radial direction. The limiting block is used to limit the distance that the locking pin extends out of the housing. A clearance is formed between the extension block and the limiting block.

[0010] In the above-mentioned rotor lock structure assembly, the clearance gap ranges from 1 mm to 3 mm.

[0011] In the above-mentioned rotor lock structure assembly, a mounting frame is formed in the mounting housing, a reset spring is sleeved on the lock pin, one end of the reset spring is pressed against the mounting frame, and the other end is pressed against the side wall of the limit block away from the elastic member.

[0012] In the above-mentioned rotor lock structure assembly, the drive assembly includes:

[0013] A driving member, disposed in the installation cavity;

[0014] A reducer and a helical gear are arranged in the installation cavity, the input end of the reducer is connected to the driving end of the driving member, and the output end of the reducer is connected to the helical gear;

[0015] The output helical gear is arranged in the installation cavity and movably meshed with the helical gear. The outer wall of the telescopic rod is formed with an external thread, and the output helical gear is formed with an internal thread. The internal thread is movably meshed with the external thread, so that the output helical gear can drive the telescopic rod to make a linear motion when it makes a rotational motion.

[0016] In the above-mentioned rotor lock structure assembly, the output bevel gear is formed with an extension portion along its axial direction, a bearing is mounted on the extension portion, and the bearing and the extension portion are both movably pressed against the mounting cavity.

[0017] In the above-mentioned rotor lock structure assembly, a guide groove is formed in the telescopic rod, one end of the elastic member is pressed against the bottom wall of the guide groove, and the other end is pressed against the side wall of the limit block.

[0018] In the above-mentioned rotor lock structure assembly, the end of the locking pin away from the end thereof locking the rotor is also threadedly connected with an adjusting nut, and the adjusting nut is movably pressed against the telescopic rod to adjust the compression amount of the elastic member.

[0019] In the above-mentioned rotor lock structure assembly, a clearance groove is further formed inside the shell, and the clearance groove is connected to the installation cavity to reserve space for the telescopic rod to drive the locking pin to retract into the shell.

[0020] In the above-mentioned rotor lock structure assembly, a locking portion and a V-shaped ring groove are formed at the end of the locking pin, and the locking portion is used to be movably inserted in the rotor to limit the rotation of the rotor; the V-shaped ring groove is located on one side of the locking portion to achieve the separation of the locking portion and the locking pin in case of accidental touch.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] (1) In a rotor lock structure assembly of the utility model, the rotational motion of an output helical gear is converted into the linear reciprocating motion of a telescopic rod, and the compression force applied to an elastic member when the telescopic rod moves is utilized, so that the elastic member can rely on elastic reset to ensure that the locking pin accurately realizes the locking function of the locking pin. The overall structure is relatively simple, and the force applied to the locking pin during the elastic reset of the elastic member effectively avoids the influence of processing or matching errors between the output helical gear and the telescopic rod on the smoothness and stability of the locking process of the locking pin on the rotor, while ensuring the normal output operation of the driving member, which is beneficial to extending the service life of the rotor lock structure assembly.

[0023] (2) The locking portion is utilized to effectively guide the locking pin to be movably inserted into the rotor, providing guarantee for the smoothness and stability during the process of locking the rotor; at the same time, the V-shaped annular groove can be utilized to ensure the function that the locking portion and the locking pin are disengaged under accidental touch opening of the rotor lock structure.

[0024] (3) The adjusting nut is threadedly connected to the locking pin, and the distance between the limiting block and the extending block can be adjusted through the adjusting nut to realize the adjustment of the compression amount of the elastic member, so as to ensure that the elastic member accurately inserts the locking pin into the rotor to realize the locking function during elastic reset, improving the flexibility and stability of the rotor lock structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a perspective view of the present application;

[0026] Figure 2 is Figure 1 the cross-sectional view taken along line A-A in

[0027] Figure 3 is a schematic installation structure diagram of the driving component and the locking pin;

[0028] Figure 4 is a perspective view of the telescopic rod.

[0029] In the figure, 1. housing; 10. upper cover; 11. lower cover; 12. installation cavity; 120. installation skeleton; 13. relief groove;

[0030] 2. driving component; 20. telescopic rod; 200. extending block; 201. external thread; 202. guiding groove; 21. driving member; 22. reducer; 23. helical gear; 24. output helical gear; 240. internal thread; 241. extending portion; 25. bearing;

[0031] 3. locking pin; 30. limiting block; 300. relief gap; 31. adjusting nut; 32. locking portion; 320. guiding inclined surface; 33. V-shaped annular groove;

[0032] 4. Elastic member;

[0033] 5. Return spring. Detailed implementation manners

[0034] The following are specific embodiments of the present invention and, in conjunction with the accompanying drawings, further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0035] As Figure 1 shown in connection with Figure 2 it should be noted that in this solution, a rotor lock structure assembly for a flying car is mainly described in detail. However, this rotor lock structure assembly is not limited to being used in a flying car and can also be applied to other places, such as ordinary cars in daily life.

[0036] As Figures 1 to 4 shown, a rotor lock structure assembly of the present invention is used to lock a rotor and includes: a housing 1, an installation cavity 12 is formed inside it; a driving assembly 2 is arranged in the installation cavity 12, a telescopic rod 20 is arranged on the driving assembly 2, and when the output end of the driving assembly 2 makes a rotational movement, it can drive the telescopic rod 20 to make a linear reciprocating movement along its axis; a locking pin 3 and an elastic member 4 are both coaxially arranged with the telescopic rod 20, the telescopic rod 20 and the elastic member 4 are both movably sleeved on the locking pin 3, one end of the elastic member 4 abuts against the telescopic rod 20, and the other end abuts against the locking pin 3; the elastic member 4 can be compressed and contracted when the telescopic rod 20 makes a linear movement, and due to the elastic reset of the elastic member 4, the locking pin 3 is pushed out of the housing 1 to lock the rotor, so as to eliminate the driving error of the driving assembly 2.

[0037] This solution is mainly for locking the rotor on a flying car. Specifically, as Figure 2 shown, at this time, the locking pin 3 is in a state of locking an external rotor (not shown in the figure). In order to achieve this action process, when the output end of the driving assembly 2 in the housing 1 is converted from a rotational movement to a linear movement of the telescopic rod 20, that is, when the telescopic rod 20 moves leftward along its axis direction in Figure 2 (here the telescopic rod 20 should be at the Figure 2 rightmost side), the elastic member 4 can be compressed. During the compression process, the elastic member 4 and the locking pin 3 can move leftward synchronously along with the movement of the telescopic rod 20. After the driving assembly 2 reaches the specified number of revolutions, the telescopic rod 20 stops moving. At this time, relying on the elastic reset effect after the elastic member 4 is compressed, the locking pin 3 can be continuously pushed to move to Figure 2 the left, and then continue to move the locking pin 3 to Figure 2At the shown position, the stable locking of the rotor is realized. The overall structure of this rotor lock is relatively simple. Even if the driving distance of the telescopic rod 20 by the driving component 2 is affected by processing or assembly, the driving force applied to the locking pin 3 when the elastic member 4 elastically returns can still ensure that the locking pin 3 can accurately reach the corresponding position and realize the locking function for the rotor. Furthermore, the smoothness and stability of the rotor locking process by the structure of this rotor lock are effectively improved. At the same time, it also ensures that the driving component 2 can operate in the normal driving mode without being damaged, which is beneficial to extending the service life.

[0038] The telescopic rod 20 is a lead screw, and an extension block 200 is formed at the end of the telescopic rod 20 along its radial direction. The locking pin 3 is formed with a limiting block 30 along its radial direction. The limiting block 30 is used to limit the distance that the locking pin 3 extends out of the housing 1. A clearance gap 300 is formed between the extension block 200 and the limiting block 30.

[0039] As Figure 2 With Figure 3 Shown, the telescopic rod 20 in this solution is a lead screw. Among them, both the extension block 200 and the limiting block 30 are movably abutted against the inner wall of the installation cavity 12, thereby playing a certain guiding effect on the movement of the telescopic rod 20 and the locking pin 3, and avoiding the inclination of the telescopic rod 20 or the locking pin 3 from affecting the stability of the rotor locking. Moreover, the limiting block 30 on the locking pin 3 can be movably abutted against the inner wall of the installation cavity 12. As Figure 2 Shown, this structure can play a limiting function on the distance that the locking pin 3 is inserted into the rotor, ensuring that neither the locking pin 3 nor the rotor is damaged during the locking process.

[0040] It should be noted that, as Figure 2 With Figure 3 Shown, a clearance gap 300 is formed between the above-mentioned limiting block 30 and the extension block 200. Preferably, the range value of the clearance gap 300 in this solution is 1 mm - 3 mm. By using this clearance gap 300, when the telescopic rod 20 makes a linear movement, the thrust cannot be directly applied to the locking pin 3, but the elastic member 4 pushes the locking pin 3 to move Figure 2 leftward during the compression process. Therefore, this clearance gap 300 gives the time required for the elastic member 4 to be compressed, ensuring that the subsequent elastic reset of the elastic member 4 compensates for the processing or assembly errors generated between the driving component 2 and the telescopic rod 20, and providing a guarantee for the smoothness and stability when the locking pin 3 can be accurately inserted into the rotor.

[0041] The driving component 2 includes: a driving member 21 disposed within the installation cavity 12; a speed reducer 22 and a helical gear 23 disposed within the installation cavity 12, the input end of the speed reducer 22 being connected to the driving end of the driving member 21, and the output end of the speed reducer 22 being connected to the helical gear 23; an output helical gear 24 disposed within the installation cavity 12 and meshing with the helical gear 23 movably, an external thread 201 being formed on the outer wall of the telescopic rod 20, and an internal thread 240 being formed within the output helical gear 24, the internal thread 240 meshing with the external thread 201 movably such that when the output helical gear 24 makes a rotational movement, it can drive the telescopic rod 20 to make a linear movement.

[0042] As Figure 2 shown in Figure 3 Figure, the speed reducer 22 is utilized to effectively reduce the rotational speed of the driving member 21 and increase the torque output, such that when the helical gear 23 rotates, it can be stably transmitted to the output helical gear 24. It should be noted that in this solution, between the output helical gear 24 and the telescopic rod 20, through the cooperation of the internal and external threads 201 (helical structure), the rotational movement of the output helical gear 24 is converted into the linear movement generated when the telescopic rod 20 rotates. However, the cooperation manner between the output helical gear 24 and the telescopic rod 20 is not limited to the one in this embodiment only, and other ways can also be adopted for substitution; in addition, the working mode of this structure can draw on the working principle of a ball screw, and will not be elaborated in detail here.

[0043] It should be added that the housing 1 in this solution is mainly composed of an upper cover 10 and a lower cover 11. When the upper cover 10 and the lower cover 11 are connected, the above-mentioned installation cavity 12 is formed, and within the installation cavity 12, several installation skeletons 120 are formed. The installation skeletons 120 can play a limiting role in the installation of the above-mentioned driving member 21, speed reducer 22, helical gear 23, and output helical gear 24, thereby ensuring the stability of the rotor lock structure during operation.

[0044] Preferably, in this solution, a PCB board (not shown in the figure) is further disposed on the back of the lower cover 11, and the PCB board is connected to the driving member 21 to receive output signals and stop signals. Moreover, in this solution, a ring-shaped sealing ring (not shown in the figure) is disposed around the PCB board and at the connection position of the upper cover 10 and the lower cover 11. The sealing ring can achieve a good sealing effect and effectively prevent external dust and water stains from entering the PCB board or the installation cavity 12, thereby shortening the service life of the rotor lock structure.

[0045] The output helical gear 24 is formed with an extension portion 241 along its axial direction, and a bearing 25 is installed on the extension portion 241. Both the bearing 25 and the extension portion 241 are movably abutted within the installation cavity 12.

[0046] Furthermore, as Figure 2 shown in Figure 3As shown, the mounting frame 120 is also formed in the mounting cavity 12, so that the outer ring of the bearing 25 on the extension portion 241 can be stably pressed against the mounting frame 120. As the helical gear 23 drives the output helical gear 24 to rotate, the bearing 25 can be relied on to improve the smoothness of the output helical gear 24 when rotating, thereby ensuring the stability of the locking pin 3 pushing the rotor to be locked by the elastic member 4 when the telescopic rod 20 moves linearly. At the same time, the bearing 25 can also play a further limiting function on the axial displacement of the output helical gear 24, effectively avoiding the output helical gear 24 driving the telescopic rod 20 to move due to axial displacement, which affects the stability of the active meshing with the helical gear 23.

[0047] like Figure 2 and Figure 4 As shown, a guide groove 202 is formed in the telescopic rod 20 in this embodiment, one end of the elastic member 4 is pressed against the bottom wall of the guide groove 202 , and the other end is pressed against the side wall of the limit block 30 .

[0048] The guide groove 202 can effectively limit the direction of the elastic member 4 when it is compressed or expanded (i.e., along the common axis of the telescopic rod 20 and the lock pin 3), ensuring that the elastic member 4 after compression can accurately push the lock pin 3 along the direction perpendicular to the side wall of the limit block 30 when elastically resetting. Figure 2 The displacement to the left ensures that the lock pin 3 can reach the corresponding position and lock the rotor stably. It should be noted that the elastic member 4 can be replaced by a compression spring, a rectangular compression spring with model number SK54100007-00, or other elastic devices.

[0049] A return spring 5 is sleeved on the lock pin 3 , one end of the return spring 5 is pressed against the mounting frame 120 , and the other end is pressed against the side wall of the limit block 30 away from the elastic member 4 .

[0050] Further reference Figure 2 , also relying on the mounting frame 120 formed in the mounting cavity 12, one end of the return spring 5 sleeved on the lock pin 3 can be pressed against the mounting frame 120, and the other end can be pressed against the limit block 30. Therefore, when the telescopic rod 20 pushes the lock pin 3 along the elastic member 4, Figure 2 When moving to the left, the limit block 30 also squeezes the return spring 5 during the movement. When the rotor on the flying car needs to be unlocked, the telescopic rod 20 can be driven along the reverse working of the driving member 21. Figure 2 The limit block 30 is pushed to the right by the elastic expansion force of the return spring 5. Figure 2 Moving to the right allows the lock pin 3 to unlock the rotor and retract into the housing 1, so as to facilitate storage and protect the lock pin 3 from damage, and also provide a guarantee for the stability of the lock pin 3 extending and locking the rotor next time.

[0051] Preferably, as Figure 2 shown, a relief groove 13 is further formed inside the housing 1. The relief groove 13 communicates with the installation cavity 12. When the driving member 21 reversely operates to drive the telescopic rod 20 to move Figure 2 leftward, the locking pin 3 will eventually contract into the housing 1 under the action of the return spring 5. Therefore, the relief groove 13 provides a reserved space for the displacement of the telescopic rod 20 and the locking pin 3, effectively avoiding the damage caused by the collision between the locking pin 3 and the inner wall of the installation cavity 12 when the locking pin 3 contracts into the housing 1.

[0052] A adjusting nut 31 is also threadedly connected to the end of the locking pin 3 far from its end for locking the rotor. The adjusting nut 31 is movably abutted against the telescopic rod 20 to adjust the compression amount of the elastic member 4.

[0053] As Figure 2 shown, the adjusting nut 31 is threadedly connected to the right end of the locking pin 3. When it is necessary to adjust the compression amount of the elastic member 4 in the initial stage, the user can rotate the adjusting nut 31 to make the locking pin 3 threadedly connected to it move Figure 2 rightward. Then, through the relative approach of the limiting block 30 to the extension block 200, the pre-compression amount of the elastic member 4 is finally adjusted. This structure is relatively simple and convenient for the user to operate, effectively ensuring that the locking pin 3 can stably lock the rotor under the sufficient pre-tightening force of the elastic member 4.

[0054] A locking portion 32 and a V-shaped ring groove 33 are formed at the end of the locking pin 3. The locking portion 32 is used to be movably inserted into the rotor to limit the rotation of the rotor; the V-shaped ring groove 33 is located on one side of the locking portion 32 to realize the separation of the locking portion 32 and the locking pin 3 in case of accidental touch.

[0055] As Figure 2 and Figure 3 shown, the locking portion 32 is located at the end of the locking pin 3 far from the adjusting nut 31. It should be noted that a guiding inclined surface 320 is formed on the locking portion 32 in this solution. With the movement of the locking pin 3, the guiding inclined surface 320 helps the locking portion 32 to be smoothly inserted into the rotor, thereby improving the fluency and stability during the locking process of the rotor. When the locking portion 32 is inserted into the rotor, the V-shaped ring groove 33 located on one side of the locking portion 32 is outside the rotor, and the manufacturing cost of the locking pin 3 compared to the rotor on the flying car is relatively low. Therefore, when the driving member 21 or the rotor on the flying car is in an emergency or accidentally opened, the locking portion 32 can be separated from other parts of the locking pin 3 by breaking the V-shaped ring groove 33 when moving with the rotor, thereby protecting the rotor from damage.

[0056] It should be noted that the driving member 21 in this solution can be replaced by other driving devices such as a stepper motor or a servo motor.

[0057] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present utility model are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture (as shown in the drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0058] In addition, in the present utility model, descriptions such as "first", "second", "one", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0059] In the present utility model, unless otherwise clearly specified and defined, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0060] In addition, the technical solutions between various embodiments of the present utility model can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

Claims

1. A rotor lock structure assembly, used to lock the rotor, characterized in that: include: A housing having an installation cavity formed therein; A drive assembly is arranged in the installation cavity, and a telescopic rod is arranged on the drive assembly, and when the output end of the drive assembly performs a rotational motion, the telescopic rod can be driven to perform a linear reciprocating motion along the axis direction thereof; The lock pin and the elastic member are both coaxially arranged with the telescopic rod, the telescopic rod and the elastic member are movably sleeved on the lock pin, one end of the elastic member is pressed against the telescopic rod, and the other end is pressed against the lock pin; The elastic member can be squeezed and contracted when the telescopic rod moves linearly, and the elastic reset of the elastic member can push the locking pin to extend out of the housing and lock the rotor, so as to eliminate the driving error of the driving assembly.

2. A rotor lock structure assembly according to claim 1, characterized in that: The telescopic rod is a lead screw, and an extension block is formed at the end of the telescopic rod along its radial direction, and a limit block is formed on the locking pin along its radial direction. The limit block is used to limit the distance that the locking pin extends out of the shell, and a clearance is formed between the extension block and the limit block.

3. A rotor lock structure assembly according to claim 2, characterized in that: The range of the clearance is 1mm-3mm.

4. A rotor lock structure assembly according to claim 2, characterized in that: A mounting frame is formed in the mounting container, a return spring is sleeved on the lock pin, one end of the return spring is pressed against the mounting frame, and the other end is pressed against the side wall of the limit block away from the elastic member.

5. The rotor lock structure assembly according to claim 1, characterized in that: The drive assembly comprises: A driving member, disposed in the installation cavity; A reducer and a helical gear are arranged in the installation cavity, the input end of the reducer is connected to the driving end of the driving member, and the output end of the reducer is connected to the helical gear; The output helical gear is arranged in the installation cavity and movably meshed with the helical gear. The outer wall of the telescopic rod is formed with an external thread, and the output helical gear is formed with an internal thread. The internal thread is movably meshed with the external thread, so that the output helical gear can drive the telescopic rod to make a linear motion when it makes a rotational motion.

6. A rotor lock structure assembly according to claim 5, characterized in that: The output bevel gear is formed with an extension portion along the axial direction thereof, a bearing is mounted on the extension portion, and the bearing and the extension portion are both movably pressed against the mounting cavity.

7. A rotor lock structure assembly according to claim 2, characterized in that: A guide groove is formed in the telescopic rod, one end of the elastic member is pressed against the bottom wall of the guide groove, and the other end is pressed against the side wall of the limit block.

8. The rotor lock structure assembly according to claim 1, characterized in that: The end of the locking pin away from the end thereof locking the rotor is also threadedly connected with an adjusting nut, and the adjusting nut is movably pressed against the telescopic rod to adjust the compression amount of the elastic member.

9. The rotor lock structure assembly according to claim 1, characterized in that: A clearance groove is also formed inside the shell, and the clearance groove is connected to the installation cavity to reserve space for the telescopic rod to drive the locking pin to retract into the shell.

10. The rotor lock structure assembly according to claim 1, characterized in that: A locking portion and a V-shaped ring groove are formed at the end of the locking pin. The locking portion is used to be movably inserted in the rotor to limit the rotation of the rotor; the V-shaped ring groove is located on one side of the locking portion to achieve separation of the locking portion and the locking pin in the event of accidental touch.

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