Motor and actuator mechanism

Abstract

The utility model relates to a kind of motor and action mechanism, and the action mechanism includes motor;Axial play elimination structure is provided on the motor, the axial play elimination structure can be set between front end bearing and torque output assembly or be set between rear end bearing and torque output assembly, axial play elimination structure moves the inner ring of the setting position bearing and torque output assembly towards opposite direction, and then make the inner ring of front end bearing and the inner ring of rear end bearing mutually far away, to axial gap produced due to part cumulative tolerance and bearing play;Prevent the axial play of torque output assembly when running from occurring. In this way, avoid collision etc., greatly avoid the occurrence of abnormal sound, improve the running stability of product.

Description

Technical Field

[0001] This utility model relates to the field of motors, and more particularly to motors and their operating mechanisms. Background Technology

[0002] As an electromagnetic device that converts electrical energy into mechanical energy, the core function of an electric motor is to drive the output shaft to rotate through the electromagnetic interaction between the stator and permanent magnets, thereby transmitting torque to the load equipment. Modern electric motors, with their advantages of high efficiency, strong controllability, and compact size, are widely used in industrial automation, new energy vehicles, home appliances, and precision instruments.

[0003] Despite the increasing maturity of motor technology, some axial movement is still unavoidable due to the cumulative tolerances of parts and the axial clearance of bearings. This axial movement causes displacement of the output shaft during motor operation, which can lead to collisions and abnormal noises. Furthermore, collisions caused by axial movement of the output shaft accelerate the wear of components, reducing the motor's durability. Utility Model Content

[0004] This utility model provides a motor and actuating mechanism that can eliminate axial movement of the motor output shaft caused by accumulated tolerances of parts and bearing clearance.

[0005] This utility model provides an electric motor, which includes:

[0006] case;

[0007] The support assembly includes a front bearing and a rear bearing, wherein the front bearing and the rear bearing are respectively disposed on the housing;

[0008] Torque output components are respectively inserted into the inner rings of the front bearing and the rear bearing; and

[0009] An axial movement elimination structure is provided, which can be disposed between the front bearing and the torque output component or between the rear bearing and the torque output component, and drives the inner ring of the bearing at the disposed position to move in the opposite direction to the torque output component, thereby causing the inner ring of the front bearing and the inner ring of the rear bearing to move away from each other.

[0010] Preferably, the torque output component includes a rotating shaft and a permanent magnet. The rotating shaft is respectively inserted into the inner ring of the front bearing and the inner ring of the rear bearing, and the permanent magnet is located inside the housing and disposed on the rotating shaft.

[0011] Preferably, the axial movement elimination structure includes an elastic element and an adhesive structure;

[0012] The elastic element is disposed between the front bearing and the permanent magnet. The elastic element pushes the inner ring of the front bearing and the permanent magnet to move away from each other, thereby moving the inner ring of the front bearing and the inner ring of the rear bearing away from each other, thereby eliminating the clearance of the front bearing and the clearance of the rear bearing.

[0013] The adhesive structure is used to glue and fix the shaft and the inner ring of the front bearing after eliminating the clearance of the front bearing and the rear bearing.

[0014] Preferably, the adhesive structure includes an adhesive groove disposed on the circumferential surface of the rotating shaft. The adhesive groove is for injecting adhesive to form an adhesive layer, and the adhesive layer connects the inner wall of the adhesive groove and the inner ring of the front bearing; or

[0015] The adhesive structure includes an adhesive groove disposed in the inner ring of the front bearing. The adhesive groove is used for injecting adhesive to form an adhesive layer. The adhesive layer is connected to the inner wall of the adhesive groove and the rotating shaft.

[0016] Preferably, the rotating shaft and the inner ring of the rear bearing are interference-fitted, and the permanent magnet and the inner ring of the rear bearing abut against each other or are spaced apart; or

[0017] The rotating shaft and the inner ring of the rear bearing are fitted with a clearance, and the permanent magnet and the inner ring of the rear bearing abut against each other.

[0018] Preferably, the axial movement elimination structure includes an elastic element and an adhesive structure;

[0019] The elastic element is disposed between the rear bearing and the permanent magnet. The elastic element pushes the inner ring of the rear bearing and the permanent magnet to move away from each other, thereby moving the inner ring of the front bearing and the inner ring of the rear bearing away from each other to eliminate the clearance of the front bearing and the rear bearing.

[0020] The adhesive structure is used to glue and fix the shaft and the inner ring of the rear bearing after eliminating the clearance of the front bearing and the rear bearing.

[0021] Preferably, the adhesive structure includes an adhesive groove disposed on the circumferential surface of the rotating shaft. The adhesive groove is for injecting adhesive to form an adhesive layer, and the adhesive layer connects the inner wall of the adhesive groove and the inner ring of the rear bearing; or

[0022] The adhesive structure includes an adhesive groove disposed in the inner ring of the rear bearing. The adhesive groove is used for injecting adhesive to form an adhesive layer. The adhesive layer is connected to the inner wall of the adhesive groove and the rotating shaft.

[0023] Preferably, the rotating shaft and the inner ring of the front bearing are interference-fitted, and the permanent magnet and the inner ring of the front bearing abut against each other or are spaced apart; or

[0024] The rotating shaft and the inner ring of the front bearing are fitted with a clearance, and the permanent magnet and the inner ring of the front bearing abut against each other.

[0025] Preferably, the support assembly further includes a front cover and a rear cover, the front cover and the rear cover being respectively disposed on the housing, the front bearing being disposed on the front cover, and the rear bearing being disposed on the rear cover.

[0026] This utility model also provides an actuation mechanism, which includes the motor described in any of the above technical solutions. The actuation mechanism further includes an execution device, and the motor is driven and connected to the execution device.

[0027] The following are the beneficial effects of implementing this utility model:

[0028] This utility model relates to a motor and an actuating mechanism. The actuating mechanism includes a motor; an axial movement elimination structure is provided on the motor. The axial movement elimination structure can be disposed between a front bearing and a torque output component or between a rear bearing and a torque output component. The axial movement elimination structure drives the inner ring of the bearing at the disposed position to move in opposite directions to the torque output component, thereby causing the inner rings of the front bearing and the rear bearing to move away from each other, thus eliminating the axial clearance of the bearing, and consequently eliminating the axial clearance of the torque output component disposed thereon; preventing axial movement of the torque output component during operation.

[0029] In this way, collisions caused by clearance in the torque output group are avoided, greatly reducing the occurrence of abnormal noises and improving the smoothness of product operation; it also prevents increased wear caused by collisions, ensuring the durability of the product. Attached Figure Description

[0030] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally denote like parts.

[0031] Figure 1 This is a schematic diagram of the motor structure in some embodiments of this utility model;

[0032] Figure 2 From another perspective Figure 1 The diagram shows the structure of the motor.

[0033] Figure 3This is an exploded view of the motor in some embodiments of this utility model;

[0034] Figure 4 This is an exploded view of the motor in some other embodiments of this utility model;

[0035] Figure 5 yes Figure 3 Another exploded view of the motor in the illustrated embodiment;

[0036] Figure 6 This is a schematic diagram of the internal structure of the motor in some embodiments of this utility model;

[0037] Figure 7 This is a schematic diagram of the internal structure of the motor in some other embodiments of this utility model;

[0038] Figure 8 yes Figure 6 The image shows an enlarged view of the motor at point A.

[0039] Figure 9 yes Figure 7 The image shows an enlarged view of the motor at point B. Detailed Implementation

[0040] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be more thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0041] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] Unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] Figure 1 and Figure 2 The motor 10 in some embodiments of the present invention is shown, such as Figures 1 to 3 As shown, the motor 10 includes a housing 1, a support assembly 2, a torque output assembly 3, and an axial movement elimination structure 4. The support assembly 2 is disposed on the housing 1, the torque output assembly 3 is rotatably disposed on the housing 1 via the support assembly 2, and the axial movement elimination structure 4 is disposed between the support assembly 2 and the torque output assembly 3.

[0045] It should be noted that the motor 10 outputs torque through the torque output assembly 3 when energized. The housing 1 is used to install and protect the other components. The support assembly 2 supports the torque output assembly 3 to rotate on the housing 1. The torque output assembly 3 rotates during operation to output torque. The axial movement elimination structure 4 is used to eliminate any axial misalignment in the torque output assembly 3, preventing axial movement of the torque output assembly 3.

[0046] like Figures 3 to 5 As shown, the support assembly 2 includes a front bearing 21 and a rear bearing 22, which are respectively mounted on the housing 1. The torque output assembly 3 is inserted into the inner ring of the front bearing 21 and the inner ring of the rear bearing 22.

[0047] The axial movement elimination structure 4 can be set between the front bearing 21 and the torque output component 3 or between the rear bearing 22 and the torque output component 3, and drive the inner ring of the bearing at the set position and the torque output component 3 to move in opposite directions, thereby making the inner ring of the front bearing 21 and the inner ring of the rear bearing 22 move away from each other.

[0048] Understandably, the axial movement elimination structure 4 is used to drive the inner ring of the front bearing 21 or the inner ring of the rear bearing 22 to generate relative displacement between them and the torque output assembly 3. By applying axial force, the inner ring of the bearing and the torque output assembly 3 move in opposite directions, thereby compensating for axial clearance and eliminating axial movement caused by manufacturing tolerances or assembly errors.

[0049] The front bearing 21 and the rear bearing 22 are used to provide rotational support points to ensure the radial positioning and axial constraint of the torque output assembly 3 during rotation, thereby reducing frictional losses.

[0050] The axial movement elimination structure 4 can be installed in at least the following ways:

[0051] Please refer to the following: Figure 6 In one embodiment, the axial movement elimination structure 4 is disposed between the front bearing 21 and the torque output assembly 3. It should be noted that in this embodiment, the axial movement elimination structure 4 applies a force to the inner ring of the front bearing 21 and applies an opposite force to the torque output assembly 3; thereby causing the inner ring of the front bearing 21 and the torque output assembly 3 to move axially away from each other. Thus, the movement of the inner ring of the front bearing 21 axially away from the torque output assembly 3 eliminates the clearance of the front bearing 21; while the torque output assembly 3, through holding (physical contact) or driving (by means of an interference fit at the mating position), causes the inner ring of the rear bearing 22 to move axially away from the front bearing 21, thereby eliminating the clearance of the rear bearing 22.

[0052] Please see Figure 7 In the second embodiment, the axial movement elimination structure 4 is disposed between the rear bearing 22 and the torque output assembly 3. It should be noted that in this embodiment, the axial movement elimination structure 4 applies a force to the inner ring of the rear bearing 22 and an opposite force to the torque output assembly 3; thereby causing the inner ring of the rear bearing 22 and the torque output assembly 3 to move axially away from each other. Thus, the axial movement of the inner ring of the rear bearing 22 away from the torque output assembly 3 eliminates the clearance of the rear bearing 22; while the torque output assembly 3, through pressing (physical contact) or driving (using the frictional force of the mating position), causes the inner ring of the front bearing 21 to move axially away from the rear bearing 22, thereby eliminating the clearance of the front bearing 21.

[0053] It should be noted that in both of the above embodiments, the inner rings of the front bearing 21 and the rear bearing 22 are moved away from each other to eliminate axial clearance, thereby preventing axial movement of the torque output component 3 during rotation, thus avoiding collisions and abnormal noises, and improving the smoothness of motor 10 operation; at the same time, it reduces wear between components, extends product service life, and ensures durability. The overall design simplifies the assembly process and improves reliability.

[0054] like Figures 3 to 7 As shown, in some embodiments of the motor 10, the torque output component 3 includes a rotating shaft 31 and a permanent magnet 32. The rotating shaft 31 is inserted into the inner ring of the front bearing 21 and the inner ring of the rear bearing 22, respectively. The permanent magnet 32 ​​is located inside the housing 1 and is disposed on the rotating shaft 31.

[0055] Understandably, the rotating shaft 31 provides the main body supporting the rotation axis of the motor 10, ensuring the rigidity and coaxiality of torque transmission. The permanent magnet 32 ​​drives the rotating shaft 31 to rotate when the motor 10 is energized, thereby outputting power through the rotating shaft 31.

[0056] It should be noted that the axial movement elimination structure 4 can be configured to be located between the front bearing 21 and the permanent magnet 32. Thus, the axial movement elimination structure 4 provides force to the inner ring of the front bearing 21 and the permanent magnet 32 ​​respectively. Then, the permanent magnet 32 ​​moves by supporting the inner ring of the rear bearing 22 or by driving the inner ring of the rear bearing 22 through the rotating shaft 31. Finally, the inner rings of the front bearing 21 and the rear bearing 22 move away from each other in the axial direction of the rotating shaft 31, thereby eliminating the axial clearance of the front and rear bearings.

[0057] Of course, the axial movement elimination structure 4 can also be configured to be located between the rear bearing 22 and the permanent magnet 32, so that the axial movement elimination structure 4 provides force to the inner ring of the rear bearing 22 and the permanent magnet 32 ​​respectively. Then, the permanent magnet 32 ​​pushes the inner ring of the front bearing 21 or drives the inner ring of the front bearing 21 to move through the rotating shaft 31, so that the inner ring of the front bearing 21 and the inner ring of the rear bearing 22 move away from each other in the axial direction of the rotating shaft 31, thereby achieving the purpose of eliminating axial clearance.

[0058] It should also be noted that the permanent magnet 32 ​​can be configured to directly abut against the inner ring of the bearing away from the axial movement elimination structure 4; or the permanent magnet 32 ​​can be configured to not contact the bearing away from the axial movement elimination structure 4, so that the permanent magnet 32 ​​will move under the drive of the axial movement elimination structure 4, and the rotating shaft 31 will further drive the inner ring of the bearing away from the axial movement elimination structure 4 to move. Both embodiments can make the inner ring of the front bearing 21 and the inner ring of the rear bearing 22 move away from each other in a direction away from each other, that is, the inner ring of the front bearing 21 and the inner ring of the rear bearing 22 are away from each other in the axial direction of the rotating shaft 31, thereby achieving the purpose of eliminating backlash.

[0059] In addition, it should be noted that, such as Figure 6 As shown, the inner ring 211 of the front bearing 21 is directly inserted into the rotating shaft 31, and the outer ring of the front bearing 21 is mounted on the front cover 23. The inner ring of the rear bearing 22 is inserted into the rotating shaft 31, and the outer ring of the rear bearing 22 is mounted on the rear cover 24.

[0060] like Figure 4 , Figure 6 and Figure 8 As shown, in some embodiments of the motor 10, the axial movement elimination structure 4 includes an elastic element 41 and an adhesive structure 42.

[0061] The elastic element 41 is disposed between the front bearing 21 and the permanent magnet 32. The elastic element 41 pushes the inner ring of the front bearing 21 and the permanent magnet 32 ​​to move away from each other, so that the inner ring of the front bearing 21 and the inner ring of the rear bearing 22 move away from each other to eliminate axial clearance.

[0062] The adhesive structure 42 is used to adhesively fix the inner ring of the shaft 31 and the front bearing 21 after eliminating axial clearance.

[0063] Understandably, the elastic element 41 simultaneously presses against the inner ring of the front bearing 21 and the permanent magnet 32, applying opposite axial forces to drive them to move away from each other. The displacement of the permanent magnet 32 ​​is transmitted to the inner ring of the rear bearing 22 through the shaft 31, or the permanent magnet 32 ​​directly presses against the inner ring of the rear bearing 22, causing the inner rings of the front bearing 21 and the rear bearing 22 to move away from each other axially along the shaft 31. The elastic deformation of the elastic element 41 automatically compensates for axial clearance caused by manufacturing tolerances or assembly errors.

[0064] After the elastic element 41 eliminates the axial clearance, the adhesive structure 42 fixes the rotating shaft 31 to the inner ring of the front bearing 21, preventing the elastic preload from weakening or vibration from causing reset. By fixing the relative position after displacement, the axial constraint of the motor 10 is ensured to be durable when it is running at high speed or under changing load, ensuring that it always rotates in a state where axial movement is eliminated.

[0065] like Figure 6 and Figure 8 As shown, in some embodiments of the motor 10, the adhesive structure 42 includes an adhesive groove 421, which is disposed on the peripheral surface of the rotating shaft 31. The adhesive groove 421 is used to inject adhesive to form an adhesive layer 422, which connects the inner wall of the adhesive groove 421 and the inner ring of the front bearing 21.

[0066] Understandably, the adhesive groove 421, serving as an adhesive injection space, constrains the adhesive flow path through its groove structure extending circumferentially along the shaft 31, ensuring that the adhesive injection area is concentrated at the contact interface between the shaft 31 and the inner ring of the front bearing 21. After the adhesive layer 422 cures, it forms a rigid connection, eliminating the relative displacement freedom between the shaft 31 and the inner ring of the front bearing 21, and preventing the recurrence of axial clearance.

[0067] It should be noted that the adhesive groove 421 prevents adhesive from overflowing into non-target areas (such as bearing rolling elements or sealing structures), reducing the risk of contamination. At the same time, the groove structure of the adhesive groove 421 facilitates control of the adhesive injection volume and monitoring of the curing process, ensuring consistency in mass production.

[0068] like Figure 6 and Figure 8 As shown, in some embodiments of the motor 10, the adhesive structure 42 includes an adhesive groove 421, which is disposed in the inner ring of the front bearing 21. The adhesive groove 421 is used to inject adhesive to form an adhesive layer 422, which connects the inner wall of the adhesive groove 421 and the rotating shaft 31.

[0069] Understandably, in this embodiment, the adhesive groove 421 is formed on the inner wall of the inner ring of the front bearing 21, and the adhesive is guided to extend axially along the inner ring of the bearing through the annular groove to form a continuous and reliable bonding interface.

[0070] It should be noted that, as described in the foregoing embodiments, the adhesive layer 422 in this embodiment can form a rigid connection after curing, eliminating the relative displacement freedom between the rotating shaft 31 and the inner ring of the front bearing 21, and preventing the recurrence of axial movement. The beneficial effects will not be elaborated further here. In this embodiment, the adhesive groove 421 is provided in the inner ring of the front bearing 21, so that the inner ring of the front bearing 21 will be bonded after the adhesive cures.

[0071] In some embodiments of the motor 10, the shaft 31 is interference-fitted with the inner ring of the rear bearing 22, and the permanent magnet 32 ​​abuts against or is spaced apart from the inner ring of the rear bearing 22.

[0072] Understandably, the shaft 31 and the inner ring of the rear bearing 22 form a rigid connection through an interference fit, directly transmitting axial load and torque, and eliminating the relative displacement between the shaft 31 and the inner ring of the rear bearing 22.

[0073] It should be noted that when the permanent magnet 32 ​​is configured to abut against the inner ring of the rear bearing 22, the permanent magnet 32 ​​acts as a medium for transmitting axial force, directly transmitting the force applied by the axial movement elimination structure 4 (such as an elastic element) to the inner ring of the rear bearing 22. Of course, the force of the axial movement elimination structure 4 can also be configured to be applied to the inner ring of the rear bearing 22 simultaneously through the permanent magnet 32 ​​and the rotating shaft 31; in this way, the clearance of the rear bearing 22 can be effectively eliminated.

[0074] When the permanent magnet 32 ​​and the inner ring of the rear bearing 22 are spaced apart, the rotating shaft 31 independently constrains the position of the inner ring of the rear bearing 22 through an interference fit. The axial displacement of the permanent magnet 32 ​​is transmitted to the rear bearing 22 only through the rotating shaft 31, reducing the assembly accuracy requirements.

[0075] like Figure 6 As shown, in some embodiments of the motor 10, the shaft 31 and the inner ring 221 of the rear bearing 22 are fitted with a clearance, and the permanent magnet 32 ​​and the inner ring 221 of the rear bearing 22 abut against each other.

[0076] Understandably, in this embodiment, the inner ring of the shaft 31 and the rear bearing 22 is not an interference fit, but a clearance fit. Thus, the clearance fit between the shaft 31 and the inner ring of the rear bearing 22 provides space for thermal expansion compensation, preventing internal stress caused by material expansion differences when the motor 10 heats up.

[0077] When the inner ring of the rotating shaft 31 and the rear bearing 22 is configured with a clearance fit, the permanent magnet 32 ​​needs to be configured to abut against the inner ring of the rear bearing 22. In this way, the permanent magnet 32 ​​directly abuts against the inner ring of the rear bearing 22, thereby causing the inner ring of the rear bearing 22 to move axially upwards. This achieves the purpose of eliminating axial movement.

[0078] like Figure 3 , Figure 5 and Figure 7 As shown, in some embodiments of the motor 10, the axial movement elimination structure 4 includes an elastic element 41 and an adhesive structure 42.

[0079] The elastic element 41 is disposed between the rear bearing 22 and the permanent magnet 32. The elastic element 41 pushes the inner ring of the rear bearing 22 and the permanent magnet 32 ​​to move away from each other, thereby the inner ring of the front bearing 21 and the inner ring of the rear bearing 22 move away from each other to eliminate axial clearance and further eliminate axial movement.

[0080] The adhesive structure 42 is used to adhesively fix the inner ring of the shaft 31 and the rear bearing 22 after eliminating axial clearance.

[0081] Understandably, the elastic element 41 applies opposite axial forces by bidirectionally pressing against the inner ring of the rear bearing 22 and the permanent magnet 32, driving them (the inner ring of the rear bearing 22 and the permanent magnet 32) to move away from each other, thereby eliminating the axial clearance of the rear bearing 22. The elastic deformation of the elastic element 41 can adaptively compensate for assembly tolerances and transmit displacement to the inner ring of the front bearing 21 through the permanent magnet 32, so that the inner ring of the front bearing 21 and the inner ring of the rear bearing 22 move away synchronously.

[0082] After the axial clearance is eliminated, the adhesive structure 42 solidifies the relative position of the shaft 31 and the inner ring of the rear bearing 22, preventing the elastic preload from loosening or vibration from causing the clearance to reappear. The adhesive structure 42 uses chemical bonding instead of mechanical fastening, avoiding the introduction of additional parts and simplifying the structure.

[0083] like Figure 7 and Figure 9 As shown, in some embodiments of the motor 10, the adhesive structure 42 includes an adhesive groove 421, which is disposed on the peripheral surface of the rotating shaft 31. The adhesive groove 421 is used to inject adhesive to form an adhesive layer 422, which connects the inner wall of the adhesive groove 421 and the inner ring of the rear bearing 22.

[0084] Understandably, the adhesive groove 421, as a structured adhesive channel, constrains the flow path and filling range of the adhesive, ensuring that the adhesive evenly covers the circumferential surface of the rotating shaft 31. The groove design of the adhesive groove 421 enhances the adhesion strength of the adhesive layer 422, preventing adhesive layer peeling failure. After the adhesive layer 422 cures, it forms a rigid connecting bridge, fixing the relative position of the rotating shaft 31 and the inner ring of the rear bearing 22, eliminating fretting friction between them.

[0085] It should be noted that the adhesive groove 421 prevents adhesive from overflowing into non-target areas (such as bearing rolling elements), reducing the risk of contamination. At the same time, the adhesive structure avoids the need for additional mechanical parts, reducing production costs and preventing increased manufacturing tolerances or assembly clearances on the product.

[0086] like Figure 7 and Figure 9 As shown, in some embodiments of the motor 10, the adhesive structure 42 includes an adhesive groove 421, which is disposed in the inner ring of the rear bearing 22. The adhesive groove 421 is used to inject adhesive to form an adhesive layer 422, which connects the inner wall of the adhesive groove 421 and the rotating shaft 31.

[0087] Understandably, the adhesive groove 421 is formed on the inner wall of the inner ring of the rear bearing 22, guiding the adhesive to extend along the circumferential and axial directions of the bearing inner ring to form a covering adhesive interface. The adhesive layer 422 is cured between the rotating shaft 31 and the inner ring of the rear bearing 22 to form a reliable and stable connection.

[0088] In some embodiments of the motor 10, the adhesive injected into the adhesive groove 421 is existing technology, as long as it can reliably bond the two interfaces that need to be bonded.

[0089] like Figure 7 As shown, in some embodiments of the motor 10, the rotating shaft 31 is interference-fitted with the inner ring of the front bearing 21, and the permanent magnet 32 ​​abuts against or is spaced apart from the inner ring of the front bearing 21.

[0090] Understandably, the interference fit between the shaft 31 and the inner ring of the front bearing 21 forms a rigid connection, directly transmitting torque and axial load.

[0091] It should be noted that when the permanent magnet 32 ​​is configured to abut against the inner ring of the front bearing 21, the force of the axial movement elimination structure 4 will be directly transmitted to the inner ring of the front bearing 21 through the permanent magnet 32, and the force of the axial movement elimination structure 4 will also be transmitted to the inner ring of the front bearing 21 through the permanent magnet 32 ​​and the rotating shaft 31.

[0092] It should also be noted that when the permanent magnet 32 ​​is configured to be spaced apart from the inner ring of the front bearing 21, the axial movement elimination structure 4 will provide a force to the permanent magnet 32, and the permanent magnet 32 ​​will drive the rotating shaft 31 to move. The rotating shaft 31 will drive the inner ring of the front bearing 21 to move through the interference fit position.

[0093] Regardless of the relative position configuration of the shaft 31 and the inner ring of the front bearing 21 as described in this embodiment, the axial clearance of the front bearing 21 can be eliminated.

[0094] like Figure 7 As shown, in some embodiments of the motor 10, the shaft 31 and the inner ring of the front bearing 21 are fitted with a clearance, and the permanent magnet 32 ​​and the inner ring of the front bearing 21 abut against each other.

[0095] Understandably, the clearance fit between the shaft 31 and the inner ring of the front bearing 21 provides thermal expansion compensation space, avoiding the accumulation of internal stress caused by temperature rise. The permanent magnet 32 ​​directly abuts against the inner ring of the front bearing 21 to ensure that the clearance adjustment force is directly transmitted to the inner ring of the front bearing 21 through the permanent magnet 32.

[0096] It should be noted that in the embodiment where the shaft 31 and the inner ring of the front bearing 21 are configured with a clearance fit, the permanent magnet 32 ​​and the inner ring of the front bearing 21 must be configured to abut against each other, so as to ensure that the force of the axial movement elimination structure 4 can be directly transmitted to the inner ring of the front bearing 21, thereby ensuring that the axial clearance of the front bearing 21 is eliminated.

[0097] like Figures 1 to 9 As shown, in some embodiments of the motor 10, the support assembly 2 further includes a front cover 23 and a rear cover 24. The front cover 23 and the rear cover 24 are respectively disposed on the housing 1. The front bearing 21 is disposed on the front cover 23 and the rear bearing 22 is disposed on the rear cover 24.

[0098] Understandably, the front cover 23 and the rear cover 24 serve as mounting bases independent of the housing 1, providing mounting references for the front bearing 21 and the rear bearing 22 respectively, ensuring the coaxiality of the two bearings (front bearing and rear bearing).

[0099] In some embodiments, the elastic element may be configured as a spring.

[0100] In some embodiments, the elastic element can be configured as a wave-shaped gasket. Of course, the elastic element can also be configured as elastic silicone or other components or structures with elasticity in the prior art.

[0101] The actuation mechanism of this utility model includes a motor 10 and an actuator, with the motor driving and connected to the actuator.

[0102] Understandably, the actuator is used to receive the torque output by the motor 10 and perform the corresponding action, so that the actuation mechanism can perform the corresponding action function.

[0103] The following are the beneficial effects of implementing this utility model:

[0104] This utility model relates to a motor and an actuating mechanism. The actuating mechanism includes a motor; an axial movement elimination structure is provided on the motor. The axial movement elimination structure can be disposed between a front bearing and a torque output component or between a rear bearing and a torque output component. The axial movement elimination structure drives the inner ring of the bearing at the disposed position to move in opposite directions to the torque output component, thereby causing the inner rings of the front bearing and the rear bearing to move away from each other, thus eliminating the axial clearance of the bearing, and consequently eliminating the axial clearance of the torque output component disposed thereon; preventing axial movement of the torque output component during operation.

[0105] In this way, collisions caused by clearance in the torque output group are avoided, greatly reducing the occurrence of abnormal noises and improving the smoothness of product operation; it also prevents increased wear caused by collisions, ensuring the durability of the product.

[0106] The present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to the present invention. Furthermore, it is understood that the steps in the method of the present invention embodiments can be adjusted, combined, and deleted according to actual needs, and the modules in the device of the present invention embodiments can be combined, divided, and deleted according to actual needs.

[0107] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An electric motor, characterized in that, include: Shell (1); The support assembly (2) includes a front bearing (21) and a rear bearing (22), wherein the front bearing (21) and the rear bearing (22) are respectively disposed on the housing (1); The torque output assembly (3) is respectively inserted into the inner ring of the front bearing (21) and the inner ring of the rear bearing (22); and Axial movement elimination structure (4) can be disposed between the front bearing (21) and the torque output component (3) or between the rear bearing (22) and the torque output component (3), and drive the inner ring of the bearing at the disposed position to move in the opposite direction to the torque output component (3), thereby causing the inner ring of the front bearing (21) and the inner ring of the rear bearing (22) to move away from each other.

2. The motor according to claim 1, characterized in that, The torque output component (3) includes a rotating shaft (31) and a permanent magnet (32). The rotating shaft (31) is inserted into the inner ring of the front bearing (21) and the inner ring of the rear bearing (22). The permanent magnet (32) is located inside the housing (1) and is disposed on the rotating shaft (31).

3. The motor according to claim 2, characterized in that, The axial movement elimination structure (4) includes an elastic element (41) and an adhesive structure (42); The elastic element (41) is disposed between the front bearing (21) and the permanent magnet (32). The elastic element (41) pushes the inner ring of the front bearing (21) and the permanent magnet (32) to move away from each other, thereby moving the inner ring of the front bearing (21) and the inner ring of the rear bearing (22) away from each other, thereby eliminating the clearance of the front bearing (21) and the rear bearing (22). The adhesive structure (42) is used to adhesively fix the shaft (31) and the inner ring of the front bearing (21) after eliminating the clearance of the front bearing (21) and the rear bearing (22).

4. The motor according to claim 3, characterized in that, The adhesive structure (42) includes an adhesive groove (421) disposed on the peripheral surface of the rotating shaft (31). The adhesive groove (421) is for injecting adhesive to form an adhesive layer (422). The adhesive layer (422) connects the inner wall of the adhesive groove (421) and the inner ring of the front bearing (21); or The adhesive structure (42) includes an adhesive groove (421) disposed on the inner ring of the front bearing (21). The adhesive groove (421) is for injecting adhesive to form an adhesive layer (422). The adhesive layer (422) connects the inner wall of the adhesive groove (421) and the rotating shaft (31).

5. The motor according to claim 2 or 3, characterized in that, The rotating shaft (31) and the inner ring of the rear bearing (22) are interference-fitted, and the permanent magnet (32) and the inner ring of the rear bearing (22) abut against each other or are spaced apart; or The rotating shaft (31) and the inner ring of the rear bearing (22) are fitted with a clearance, and the permanent magnet (32) and the inner ring of the rear bearing (22) abut against each other.

6. The motor according to claim 2, characterized in that, The axial movement elimination structure (4) includes an elastic element (41) and an adhesive structure (42); The elastic element (41) is disposed between the rear bearing (22) and the permanent magnet (32). The elastic element (41) pushes the inner ring of the rear bearing (22) and the permanent magnet (32) to move away from each other, thereby eliminating the clearance of the front bearing (21) and the rear bearing (22). The adhesive structure (42) is used to adhesively fix the inner ring of the shaft (31) and the rear bearing (22) after eliminating the clearance of the front bearing (21) and the rear bearing (22).

7. The motor according to claim 6, characterized in that, The adhesive structure (42) includes an adhesive groove (421) disposed on the peripheral surface of the rotating shaft (31). The adhesive groove (421) is for injecting adhesive to form an adhesive layer (422). The adhesive layer (422) connects the inner wall of the adhesive groove (421) and the inner ring of the rear bearing (22); or The adhesive structure (42) includes an adhesive groove (421) disposed on the inner ring of the rear bearing (22). The adhesive groove (421) is for injecting adhesive to form an adhesive layer (422). The adhesive layer (422) connects the inner wall of the adhesive groove (421) and the rotating shaft (31).

8. The motor according to claim 6 or 7, characterized in that, The rotating shaft (31) and the inner ring of the front bearing (21) are interference-fitted, and the permanent magnet (32) and the inner ring of the front bearing (21) abut against each other or are spaced apart; or The rotating shaft (31) and the inner ring of the front bearing (21) are fitted with a clearance, and the permanent magnet (32) and the inner ring of the front bearing (21) abut against each other.

9. The motor according to claim 1, characterized in that, The support assembly (2) further includes a front cover (23) and a rear cover (24). The front cover (23) and the rear cover (24) are respectively disposed on the housing (1). The front bearing (21) is disposed on the front cover (23) and the rear bearing (22) is disposed on the rear cover (24).

10. An actuating mechanism, characterized in that, The motor includes any one of claims 1 to 9, and the actuating mechanism further includes an actuating device, wherein the motor is driven and connected to the actuating device.

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