Motor with self-locking function

Abstract

The utility model provides a motor with a self-locking function, and belongs to the field of motors. The motor cover is mounted on the motor; the spiral piece is wound in the circumferential direction of the motor shaft, the motor cover is provided with a mounting part, the spiral piece is mounted on the mounting part, the motor shaft penetrates through the mounting part, and the length of the spiral piece is larger than the circumference of the motor shaft mounted at the mounting part; and the locking position is arranged on the mounting part, and when the motor shaft rotates in the direction in which the spiral piece is separated from the locking position, the motor shaft is locked by the spiral piece. The self-locking function of the motor can be completed through the characteristics of the spiral piece, and the structure is simple and efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and particularly to a motor with a self-locking function. Background Art

[0002] In the fields of current industrial production and mechanical operation, motors are widely used as key power driving devices. However, traditional motors face many challenges in actual use. In many working scenarios, such as when the equipment suddenly loses power, or is subjected to strong external impacts or interferences, if the motor shaft cannot be locked effectively and in a timely manner, it is prone to accidental rotation, which poses potential threats to the accuracy of the production process, the safety of the equipment, and the lives and property of personnel.

[0003] There are some deficiencies in common motor self-locking methods. The self-locking process of conventional motors is too rapid, which will cause strong impacts between components, not only accelerating the wear of mechanical components, but also possibly causing problems such as excessive noise and severe vibration, affecting the overall performance and service life of the equipment. Summary of the Utility Model

[0004] The problem solved by the utility model is that traditional motors cannot be self-locked or the self-locking process is too rapid, resulting in strong impacts between components, as well as increased wear, excessive noise, and severe vibration.

[0005] To solve the above problems, the utility model adopts the following technical solutions: A motor with a self-locking function, comprising: a motor shaft; a motor cover, which is installed on the motor; a spiral member, which is wound around the circumferential direction of the motor shaft, the motor cover is provided with an installation part, the spiral member is installed on the installation part, the motor shaft passes through the installation part, and the length of the spiral member is greater than the circumference of the motor shaft at the installation part where the motor shaft is installed; a stop position, which is provided on the installation part, when the motor shaft rotates in the direction away from the stop position along the spiral member, the motor shaft is locked by the spiral member.

[0006] Compared with the prior art, the technical effects achieved by adopting this technical solution: By setting the spiral member wound around the circumferential direction of the motor shaft and installing the motor shaft and the spiral member on the installation part of the motor cover, this structural design enables the motor, when the motor shaft rotates in the direction away from the stop position along the spiral member, due to the length of the spiral member being greater than the circumference of the motor shaft at the installation part where the motor shaft is installed, with the help of the friction between the spiral member and the installation part, the spiral member can lock the motor shaft, effectively preventing the accidental rotation of the motor shaft and realizing the slow-speed self-locking of the motor.

[0007] Further, the spiral member includes: a winding end, which is wound around the circumferential direction of the motor shaft; a contact end, which coincides with the winding end in the circumferential direction, and the contact end abuts against the stop position.

[0008] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The spiral member is an integral structure. Through the cooperation of the stop position and the abutting end, when the spiral member rotates in the direction close to the stop position, the abutting end abuts against the stop position, and the spiral member releases the motor shaft. Furthermore, the spiral member generates a relatively small rotational resistance on the motor shaft, ensuring the normal use of the motor shaft.

[0009] Further, the abutting end includes: a hook, which is snap-fitted to the stop position; a first elastic wall, which is connected to the hook and is bent relative to the hook.

[0010] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The hook is snap-fitted to the stop position, which can provide a clear and stable snap-fitting effect, preventing abnormal noise generated by the spiral member when the motor shaft commutes. Moreover, it prevents the motor shaft from being squeezed too tightly when the motor shaft is self-locked, resulting in serious wear of components and generation of noise.

[0011] Further, the winding end includes: a second elastic wall, which is connected to the first elastic wall; a heat dissipation groove, which is provided on the side of the second elastic wall in contact with the motor shaft.

[0012] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: While ensuring the self-locking clamping force of the motor, the setting of the heat dissipation groove increases the heat dissipation area, which helps the motor quickly dissipate heat during operation, avoiding affecting the performance and service life of the motor due to overheating.

[0013] Further, the installation part includes a cam groove for installing the spiral member, and the center of rotation of the cam groove is provided on the axis of the motor shaft.

[0014] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The cam groove provides a specific track and space for the installation and movement of the spiral member. The center of rotation is set on the axis of the motor shaft, ensuring the coaxiality of the motor shaft and the spiral member during movement, and improving the stability and reliability of the entire structure. In the actual operation of the motor, this design can ensure that the spiral member moves along a predetermined trajectory, accurately realizing the self-locking function and avoiding deviation or failure. Under the working conditions of high-speed operation or frequent start-stop, the guarantee of coaxiality can reduce the additional vibration and wear caused by non-coaxiality, and extend the service life of the motor.

[0015] Further, the cam groove includes: an abutting groove for accommodating the abutting end, and the abutting groove is connected to the stop position; a rotating groove, which is provided on the side of the abutting groove away from the stop position, and the radius of the end of the rotating groove away from the stop position is smaller than the radius of the end of the rotating groove close to the stop position.

[0016] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The spiral part and the rotating groove are eccentrically fitted. The rotating groove exerts an extrusion force on the spiral part. The side with a smaller radius of the rotating groove is used to tighten the spiral part. The change in the radius of the rotating groove can adjust the friction and locking force between the spiral part and the motor shaft, adapting to different working requirements and working conditions. In some occasions where a large locking force is required, a smaller radius of the rotating groove can provide a stronger self-locking effect; while in cases where a certain degree of flexibility is required, a larger radius of the rotating groove can reduce resistance.

[0017] Furthermore, the spiral part and the motor shaft are in interference fit in the rotating groove.

[0018] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The interference fit can ensure the tight connection between the spiral part and the motor shaft, reduce the possibility of relative sliding and loosening, and thus improve the stability and reliability of self-locking. In the case of frequent start-stop of the motor or under large impacts, the interference fit can effectively prevent the occurrence of gaps between the spiral part and the motor shaft, avoiding self-locking failure caused by loosening; in equipment with high-precision requirements, the interference fit can ensure the accuracy of the rotation angle of the motor shaft and the self-locking position, improving the working quality of the equipment.

[0019] Furthermore, the installation part includes a motor shaft positioning hole, and the motor shaft installation hole is arranged on the axis of the motor shaft.

[0020] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The motor shaft positioning hole provides accurate positioning for the installation of the motor shaft, ensuring that the motor shaft can be correctly installed in the predetermined position and reducing the installation error. The design of the motor shaft positioning hole on the axis of the motor shaft ensures the coaxiality of the motor shaft during rotation, helps to reduce vibration and wear caused by eccentricity, and improves the running stability and service life of the motor.

[0021] Furthermore, the motor includes a fixing part, the fixing part is connected to the motor cover, and the fixing part is used to fix the spiral part.

[0022] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The existence of the fixing part can enhance the fixing effect on the spiral part, prevent the spiral part from shifting or falling off during the working process, and ensure the reliable realization of the self-locking function. At the same time, the connection method between the fixing part and the motor cover makes the whole structure more compact, reduces the looseness and unstable factors between components, keeps the spiral part in the correct position all the time, and maintains the self-locking performance of the motor.

[0023] Furthermore, the fixing part is provided with a positioning ring, and the installation part is provided with a positioning groove, and the positioning ring and the positioning groove are cooperated for positioning.

[0024] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The cooperation between the positioning ring and the positioning groove realizes an accurate positioning function, ensuring that the fixing part and the installation part can be accurately connected and assembled. Brief Description of the Drawings

[0025] Figure 1 Structural diagram of the motor cover and the spiral part of the motor according to the embodiment of the present utility model;

[0026] Figure 2 Overall assembly structural diagram of the motor according to the embodiment of the present utility model;

[0027] Figure 3 For Figure 2 exploded view;

[0028] Figure 4 Structural diagram of the motor cover of the motor according to the embodiment of the present utility model;

[0029] Figure 5 Structural diagram of the spiral part of the motor according to the embodiment of the present utility model;

[0030] Figure 6 Structural diagram of the fixing part of the motor according to the embodiment of the present utility model.

[0031] Explanation of the reference numerals in the drawings:

[0032] 1 - Motor; 10 - Motor cover; 20 - Fixing part; 100 - Spiral part; 110 - Motor shaft; 120 - Installation part; 1210 - Stopping position; 101 - Winding end; 102 - Abutting end; 1011 - Heat dissipation groove; 1012 - Second elastic wall; 1021 - Hook; 1022 - First elastic wall; 1230 - Cam groove; 1231 - Abutting groove; 1232 - Rotating groove; 1240 - Motor shaft positioning hole; 1250 - Positioning groove; 2000 - Washer; 2100 - Positioning ring. Detailed Embodiment

[0033] To make the above - mentioned objects, features, and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be given with reference to the drawings.

[0034] In the modern industrial and mechanical fields, motors are widely used as important power sources. However, in many application scenarios, the stop and locking functions of motors are crucial.

[0035] In the prior art, motors either do not have a self - locking function or the self - locking process is too rapid, which can cause strong impacts between components, increased wear, excessive noise, and severe vibration.

[0036] The present utility model provides a motor with a self-locking function for the above problems. The self-locking device of this motor is simple and efficient. Through the frictional force between the spiral member 100 and the motor cover 10, and the interference fit between the spiral member 100 and the motor shaft 110, the spiral member 100 rotates and clamps with the motor shaft 110 to complete the self-locking of the motor shaft 110. The self-locking process is not too rapid, effectively reducing the noise and wear generated during the self-locking process. At the same time, the self-locking stability and reliability are high.

[0037] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be given with reference to the accompanying drawings.

[0038] The following refers to Figures 1 to 6 Describe the technical solutions of some embodiments of the present utility model.

[0039] As Figures 1 to 4 shown, a motor 1 with a self-locking function includes: a motor shaft 110, a motor cover 10, a spiral member 100, and a stop position 1210. The motor cover 10 is installed on the motor 1; the spiral member 100 is wound around the circumference of the motor shaft 110. The motor cover 10 is provided with an installation portion 120, and the spiral member 100 is installed in the installation portion 120. The motor shaft 110 passes through the installation portion 120, and the length of the spiral member 100 is greater than the circumference of the motor shaft 110 at the position where the motor shaft 110 is installed in the installation portion 120; the stop position 1210 is provided on the installation portion 120. When the motor shaft 110 rotates in the direction away from the stop position 1210 along the spiral member 100, the motor shaft 110 is locked by the spiral member 100.

[0040] By arranging the spiral member 100 to be wound around the circumference of the motor shaft 110 and installing the motor shaft 110 and the spiral member 100 in the installation portion 120 of the motor cover 10, this structural design enables the motor, when the motor shaft 110 rotates in the direction away from the stop position 1210 along the spiral member 100, due to the length of the spiral member 100 being greater than the circumference of the motor shaft 110 at the position where the motor shaft 110 is installed in the installation portion 120, with the help of the frictional force between the spiral member 100 and the installation portion 120, the spiral member 100 can lock the motor shaft 110, effectively preventing the accidental rotation of the motor shaft 110 and achieving the slow-speed self-locking of the motor.

[0041] Specifically, as Figure 5 shown, the spiral member 100 includes: a winding end 101 and an abutting end 102. The winding end 101 is wound around the circumference of the motor shaft 110; the abutting end 102 coincides with the winding end 101 in the circumferential direction, and the abutting end 102 abuts against the stop position 1210.

[0042] The spiral member 100 is an integral structure. Through the cooperation of the stop position 1210 and the abutting end 102, when the spiral member 100 rotates in the direction close to the stop position 1210, the abutting end 102 abuts against the stop position 1210, the spiral member 100 releases the motor shaft 110, and generates a small rotational resistance on the motor shaft 110, ensuring the normal use of the motor shaft 110.

[0043] At the same time, the abutting end 102 includes: a hook 1021 and a first elastic wall. The hook 1021 is clamped to the stop position 1210; the first elastic wall is connected to the hook 1021 and is bent relative to the hook 1021.

[0044] The hook 1021 is clamped to the stop position 1210, which can provide a clear and stable clamping effect, prevent the spiral member 100 from generating abnormal noises when the motor shaft 110 commutes, and furthermore, prevent the motor shaft 110 from being squeezed too tightly when the motor shaft 110 is self-locked, resulting in serious wear of components and generation of noises.

[0045] Preferably, the abutting end 102 can be without the hook 1021. The advantage of this setting is that it can enhance the friction of the spiral member 100.

[0046] Furthermore, the winding end 101 includes: a second elastic wall 1012 and a heat dissipation groove 1011. The second elastic wall 1012 is connected to the first elastic wall 1022; the heat dissipation groove 1011 is provided on the side where the second elastic wall 1012 contacts the motor shaft 110.

[0047] Preferably, the heat dissipation grooves 1011 can be set to two, which increases the heat dissipation effect and does not affect the motor self-locking function at the same time.

[0048] While ensuring the motor self-locking clamping force, the setting of the heat dissipation grooves 1011 increases the heat dissipation area, which helps the motor to quickly dissipate heat during operation, avoiding affecting the performance and service life of the motor due to overheating.

[0049] Furthermore, as Figure 3 and Figure 4 shown, the installation part 120 includes a cam groove 1230 for installing the spiral member 100, and the center of rotation of the cam groove 1230 is provided on the axis of the motor shaft 110.

[0050] The cam groove 1230 provides a specific track and space for the installation and movement of the screw member 100. The rotation center is set on the axis of the motor shaft 110, ensuring the coaxiality of the motor shaft 110 and the screw member 100 during movement, and improving the stability and reliability of the entire structure. During the actual operation of the motor, this design can ensure that the screw member 100 moves along a predetermined trajectory, accurately realizing the self-locking function and avoiding deviations or failures. Under working conditions of high-speed operation or frequent start-stop, ensuring coaxiality can reduce additional vibration and wear caused by non-coaxiality, and extend the service life of the motor.

[0051] Further, the cam groove 1230 includes: an abutting groove 1231 and a rotating groove 1232. The abutting groove 1231 is used to accommodate the abutting end 102, and the abutting groove 1231 is connected to the stopping position 1210; the rotating groove 1232 is provided on the side of the abutting groove 1231 away from the stopping position 1210, and the radius of the end of the rotating groove 1232 away from the stopping position 1210 is smaller than the radius of the end of the rotating groove 1232 close to the stopping position 1210.

[0052] There is an eccentric fit between the screw member 100 and the rotating groove 1232 of the motor cover 10. The side with a smaller radius of the rotating groove 1232 is used to tighten the screw member 100. The rotating groove 1232 exerts an extrusion force on the screw member 100. The change in the radius of the rotating groove 1232 can adjust the frictional force and locking force between the screw member 100 and the motor shaft 110 to adapt to different working requirements and working conditions. In some occasions where a large locking force is required, a smaller radius of the rotating groove 1232 can provide a stronger self-locking effect; while in cases where a certain degree of flexibility is required, a larger radius of the rotating groove 1232 can reduce resistance.

[0053] Further, the screw member 100 and the motor shaft 110 are in interference fit in the rotating groove 1232.

[0054] The interference fit can ensure a tight connection between the screw member 100 and the motor shaft 110, reduce the possibility of relative sliding and loosening, and thus improve the stability and reliability of self-locking. In the case of frequent start-stop of the motor or being subjected to large impacts, the interference fit can effectively prevent gaps from appearing between the screw member 100 and the motor shaft 110 and avoid self-locking failure caused by loosening; in equipment with high precision requirements, the interference fit can ensure the accuracy of the rotation angle of the motor shaft 110 and the self-locking position, and improve the working quality of the equipment.

[0055] Further, as Figure 3 、 Figure 4 and Figure 6 shown, the installation part 120 includes a motor shaft positioning hole 1240, and the motor shaft mounting hole 1240 is provided on the axis of the motor shaft 110.

[0056] The motor shaft positioning hole 1240 provides accurate positioning for the installation of the motor shaft 110, ensuring that the motor shaft 110 can be correctly installed at the predetermined position and reducing the installation error. The design of the motor shaft positioning hole 1240 on the axis of the motor shaft 110 ensures the coaxiality of the motor shaft 110 during rotation, helps to reduce vibration and wear caused by eccentricity, and improves the operating stability and service life of the motor.

[0057] Furthermore, as Figure 6 shown, the motor 1 includes a fixing portion 20, the fixing portion 20 is connected to the motor cover 10, and the fixing portion 20 is used to fix the screw member 100.

[0058] The existence of the fixing portion 20 can enhance the fixing effect on the screw member 100, prevent the screw member 100 from shifting or falling off during operation, and ensure the reliable realization of the self-locking function. At the same time, the connection method between the fixing portion 20 and the motor cover 10 makes the whole structure more compact, reduces looseness and unstable factors between components, keeps the screw member 100 in the correct position all the time, and maintains the self-locking performance of the motor.

[0059] Furthermore, the fixing portion 20 is provided with a positioning ring 2100, and the mounting portion 120 is provided with a positioning groove 1250. The positioning ring 2100 cooperates with the positioning groove 1250 for positioning.

[0060] The cooperation between the positioning ring 2100 and the positioning groove 1250 realizes the precise positioning function, ensuring that the fixing portion 20 and the mounting portion 120 can be accurately connected and assembled.

[0061] Preferably, the fixing portion 20 further includes a washer 2000, and the washer 2000 is in direct contact with the screw member 100. The setting of the washer 2000 increases the contact area and friction force with the screw member 100, further improves the fixing effect on the screw member 100, and makes it more firmly in the working position. The washer 2000 located inside the positioning ring 2100 can disperse the pressure, reduce the local pressure on the screw member 100 and other components, and reduce the risk of wear and damage.

[0062] Although the present utility model is disclosed as above, the present utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the scope defined by the claims.

Claims

1. A motor with a self-locking function, characterized in that, Comprising: Motor shaft; Motor cover, the motor cover is installed on the motor; Spiral member, the spiral member is wound around the circumference of the motor shaft, the motor cover is provided with a mounting portion, the spiral member is installed on the mounting portion, the motor shaft passes through the mounting portion, and the length of the spiral member is greater than the circumference of the motor shaft at the position where the motor shaft is installed on the mounting portion; Stopping position, the stopping position is provided on the mounting portion, and when the motor shaft rotates along the spiral member in the direction away from the stopping position, the motor shaft is locked by the spiral member.

2. The motor according to claim 1, wherein The spiral member includes: Winding end, the winding end is wound around the circumference of the motor shaft; Abutting end, the abutting end coincides with the winding end in the circumferential direction, and the abutting end abuts against the stopping position.

3. The motor according to claim 2, characterized in that, The abutting end includes: Hook, the hook is clamped to the stopping position; First elastic wall, the first elastic wall is connected to the hook and is bent relative to the hook.

4. The motor according to claim 3, characterized in that, The winding end includes: Second elastic wall, the second elastic wall is connected to the first elastic wall; Heat dissipation groove, the heat dissipation groove is provided on the side where the second elastic wall contacts the motor shaft.

5. The motor according to claim 2, wherein The mounting portion includes a cam groove for mounting the spiral member, and the center of rotation of the cam groove is provided on the axis of the motor shaft.

6. The motor according to claim 5, wherein The cam groove includes: Abutting groove for accommodating the abutting end, and the abutting groove is connected to the stopping position; Rotating groove, the rotating groove is provided on the side of the abutting groove away from the stopping position, and the radius of the end of the rotating groove away from the stopping position is smaller than the radius of the end of the rotating groove close to the stopping position.

7. The motor according to claim 6, characterized in that The spiral member and the motor shaft are in interference fit in the rotating groove.

8. The motor according to claim 1, characterized in that The mounting portion includes a motor shaft positioning hole provided on the axis of the motor shaft.

9. The motor according to claim 1, the motor includes a fixing portion connected to the motor cover, and the fixing portion is used to fix the spiral member.

10. The motor according to claim 9, wherein, The fixing portion is provided with a positioning ring, and the mounting portion is provided with a positioning groove, and the positioning ring and the positioning groove cooperate for positioning.

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