Motor, motor assembly and vehicle

Abstract

The utility model discloses a motor, a motor assembly and a vehicle, the motor comprises a motor rotating shaft, a sensor rotor and a limiting lantern ring, and the motor rotating shaft is provided with a limiting boss; the sensor rotor is arranged on the motor rotating shaft; the limiting lantern ring is arranged on the periphery of the motor rotating shaft in a sleeving mode and is in interference fit with the motor rotating shaft, one side of the sensor rotor abuts against the limiting boss, and the other side of the sensor rotor abuts against the limiting lantern ring in a matched mode. According to the motor provided by the embodiment of the utility model, the motor rotating shaft is provided with the limiting boss, and the limiting lantern ring is in interference fit with the motor rotating shaft, so that the two sides of the sensor rotor can abut against the limiting boss and the limiting lantern ring, and the sensor rotor is limited; therefore, the sensor rotor is directly mounted on the motor rotating shaft, the mounting process of the sensor rotor can be simplified, assembly is facilitated, and the working stability of the sensor rotor can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and in particular to a motor, a motor assembly and a vehicle. Background Art

[0002] The eddy current sensor is a non-contact linear measurement tool that can accurately measure the static and dynamic relative displacement changes between the measured object and the probe end face through the principle of eddy current effect. In the related technology, the position sensor is installed on the motor, but the assembly process is complicated and there is room for improvement. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a motor with a simple structure and convenient assembly.

[0004] The utility model also provides a motor assembly.

[0005] The utility model also provides a vehicle.

[0006] The motor according to the first aspect of the utility model includes: a motor shaft, on which a limiting boss is provided; a sensor rotor, which is arranged on the motor shaft; and a limiting ring, which is sleeved on the outer circumference of the motor shaft and has an interference fit with the motor shaft, wherein one side of the sensor rotor abuts against the limiting boss, and the other side of the sensor rotor abuts against the limiting ring.

[0007] According to the motor of the embodiment of the utility model, a limiting boss is arranged on the motor shaft, and a limiting ring is arranged to have an interference fit with the motor shaft, so that both sides of the sensor rotor can abut against the limiting boss and the limiting ring to achieve the limitation of the sensor rotor. As a result, the sensor rotor can be directly installed on the motor shaft to achieve the installation of the sensor rotor in the motor. The installation process of the sensor rotor can be simplified to facilitate assembly, and the sensor rotor can be prevented from axially moving along the motor shaft when rotating, thereby improving the working stability of the sensor rotor.

[0008] In some embodiments, a portion of the motor shaft is recessed radially inwardly along the motor shaft to form a groove, and the limiting boss is formed on one side of the groove.

[0009] In some embodiments, one of the sensor rotor and the motor shaft has a connecting key, and the other of the sensor rotor and the motor shaft has a slot, and the connecting key is suitable for being plugged into the slot to enable the sensor rotor and the motor shaft to be key-connected.

[0010] In some embodiments, the connection key is an integral piece with one of the sensor rotor and the motor shaft.

[0011] In some embodiments, the motor further includes a housing and a sensor stator assembly, wherein the sensor stator assembly is disposed on the housing and fixedly connected to the housing, and the motor shaft is disposed on the housing and can rotate relative to the housing.

[0012] In some embodiments, a bearing is provided on the motor shaft, the housing has a bearing cavity for mounting the bearing, the sensor stator assembly is provided on one side of the bearing cavity and defines a avoidance hole, and the outer diameter of the bearing is smaller than the aperture of the avoidance hole.

[0013] In some embodiments, along the extension direction of the motor shaft, the bearing, the sensor stator assembly, and the sensor rotor assembly are arranged in sequence, and at least a portion of the limiting collar is located in the avoidance hole.

[0014] In some embodiments, the sensor stator assembly includes: a shell connected to the housing; a circuit board, the shell defines a mounting cavity, the circuit board is disposed in the mounting cavity and an open side of the mounting cavity is sealed by a sealant.

[0015] In some embodiments, one of the shell and the outer shell has a positioning column, and the other of the shell and the outer shell has a positioning hole, and the positioning holes are plug-fitted with each other.

[0016] In some embodiments, the shell has a first mounting hole, the outer shell has a second mounting hole, and the shell and the outer shell are fixedly connected by fasteners penetrating the first mounting hole and the second mounting hole.

[0017] In some embodiments, the shell includes a shell body and a connecting part, the shell body has the installation cavity, the connecting part is located at the periphery of the shell body and is connected to the outer shell, wherein in the extension direction of the motor shaft, the size of the connecting part is not larger than the size of the shell body.

[0018] In some embodiments, a portion of the housing protrudes toward the sensor stator assembly to form a mounting boss, a middle portion of the mounting boss has a mounting space, the connecting portion is connected to the mounting boss, and a portion of the shell body extends into the mounting space.

[0019] In some embodiments, an avoidance gap is provided on the mounting boss, and the avoidance gap is used to avoid the wire outlet portion of the shell body.

[0020] In some embodiments, the housing includes a base and an end cover, the end cover is disposed on one side of the base and cooperates with the base to form a receiving cavity, and the sensor stator assembly is disposed in the receiving cavity and fixedly connected to the end cover.

[0021] The motor assembly according to the second aspect of the utility model includes the motor according to the first aspect of the utility model. By adopting the above-mentioned motor, the stability of the position sensor can be improved, the stability of the eddy current position detection of the motor can be improved, and the stability of the motor assembly can be improved.

[0022] The vehicle according to the third aspect of the present invention comprises the motor assembly according to the second aspect of the present invention. By adopting the motor assembly, the stability of the eddy current position detection of the motor assembly can be improved, thereby improving the driving stability of the vehicle.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 is a schematic diagram of a partial structure of a motor according to an embodiment of the utility model;

[0026] Figure 2 yes Figure 1 An exploded view of the structure shown;

[0027] Figure 3 yes Figure 1 a cross-sectional view of the structure shown;

[0028] Figure 4 yes Figure 3 The middle circle shows an enlarged view of A;

[0029] Figure 5 is a structural schematic diagram of a sensor stator assembly according to an embodiment of the utility model;

[0030] Figure 6 is a schematic structural diagram of an end cover according to an embodiment of the utility model;

[0031] Figure 7 is a schematic structural diagram of a sensor rotor according to an embodiment of the utility model;

[0032] Figure 8 It is a schematic diagram of installing the sensor rotor on the motor shaft according to an embodiment of the utility model.

[0033] Reference numerals:

[0034] Motor 100,

[0035] Sensor stator assembly 10, housing 11, housing body 111, connecting portion 112, outlet portion 113, circuit board 12, sealant 13, positioning column 14, first mounting hole 15, avoidance hole 16, wiring harness 17,

[0036] Sensor rotor 20, connecting key 21,

[0037] Housing 30, end cover 301, mounting boss 31, mounting space 311, avoidance notch 312, positioning hole 32, second mounting hole 33, bearing cavity 34,

[0038] The motor shaft 40, the slot 41, the first groove 42, the limiting boss 421, the second groove 43,

[0039] Limiting collar 50 , bearing 60 , fastener 70 . DETAILED DESCRIPTION

[0040] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Reference below Figure 1-Figure 8 A motor 100 according to an embodiment of the present invention is described.

[0044] like Figure 1-Figure 8 As shown, according to the motor 100 of the embodiment of the utility model, the motor 100 includes: a motor shaft 40, a sensor rotor 20 and a limiting ring 50. The sensor rotor 20 is arranged on the motor shaft 40, and the rotation of the motor shaft 40 can drive the sensor rotor 20 to rotate; a limiting boss 421 is arranged on the motor shaft 40, and the limiting ring 50 is sleeved on the outer periphery of the motor shaft 40, and the limiting ring 50 and the motor shaft 40 are interference fit, so that the limiting ring 50 can be installed and prevented from being out of fit with the motor shaft 40.

[0045] One side of the sensor rotor 20 (e.g., Figure 4 The rear side shown in FIG. 4A ) can abut against the limiting boss 421, and the other side of the sensor rotor 20 (for example, Figure 4 The front side shown in the figure) can abut against the limiting collar 50, and then the limiting boss 421 and the limiting collar 50 cooperate, and the motor shaft 40 can be axially (such as Figure 4 The sensor rotor 20 is limited in the front-to-back direction (as shown in the figure) to prevent the sensor rotor 20 from moving axially along the motor shaft 40 during rotation, thereby improving the working stability of the sensor rotor 20.

[0046] According to the motor 100 of the embodiment of the utility model, by setting a limiting boss 421 on the motor shaft 40, and by setting a limiting ring 50 to have an interference fit with the motor shaft 40, both sides of the sensor rotor 20 can abut against the limiting boss 421 and the limiting ring 50 to achieve the limitation of the sensor rotor 20, thereby allowing the sensor rotor 20 to be directly installed on the motor shaft 40 to achieve the installation of the sensor rotor 20 in the motor 100, which can simplify the installation process of the sensor rotor 20 and facilitate assembly, and can prevent the sensor rotor 20 from axially moving along the motor shaft 40 when rotating, thereby improving the working stability of the sensor rotor 20.

[0047] like Figure 4As shown, in some embodiments, a portion of the motor shaft 40 is radially (eg, Figure 4 The inner and outer directions shown in FIG. 4A and FIG. 4B are concave inward to form a first groove 42. One side of the first groove 42 (as shown in FIG. 4B ) is concave inward to form a first groove 42. Figure 4 The rear side shown in FIG. 4 is formed with a limited position boss 421, and one side of the sensor rotor 20 (as shown in FIG. Figure 4 The rear side shown in FIG. 4A ) can be abutted with the limiting boss 421, and the other side of the sensor rotor 20 (as shown in FIG. Figure 4 The front side shown in the figure can be abutted and matched with the limiting collar 50 to limit the position of the sensor rotor 20, so as to prevent the sensor rotor 20 from moving along the axial direction of the motor shaft 40 (such as Figure 4 The sensor rotor 20 can be prevented from moving in the front-to-back direction (as shown), thereby improving the rotation stability of the sensor rotor 20.

[0048] It is understandable that a portion of the motor shaft 40 (eg, the front portion of the motor shaft 40) may be axially disposed in the motor shaft 40 (eg, Figure 4 The motor shaft 40 is divided into multiple sections in the front-to-back direction (as shown in the front-to-back direction), and is successively recessed inward in the direction from back to front to form multiple sections of grooves of different depths to form a stepped shaft, which is conducive to forming multiple limiting bosses 421 in the axial direction of the motor shaft 40, and in the radial direction of the motor shaft 40 (as shown in the front-to-back direction). Figure 4 In the inner and outer directions shown in FIG. 1 , the heights of the plurality of limiting bosses 421 are different. For example, in the direction from the back to the front, the height of the limiting bosses 421 gradually decreases. Then, by making the sensor rotor 20 abut against different limiting bosses 421, and then making the limiting collar 50 abut against the sensor rotor 20, the limiting of the sensor rotor 20 can be achieved, and the installation position of the sensor rotor 20 can be adjusted according to actual needs, which is beneficial to adjusting the distance between the sensor rotor 20 and the sensor stator assembly 10.

[0049] Of course, a portion of the motor shaft 40 may be radially extending from the motor shaft 40 (eg Figure 4 The inner and outer directions shown in the figure) protrude outward to form a limiting boss 421, and the two sides of the limiting boss 421 (such as Figure 4 The front and rear sides (shown in FIG. 1 ) can form a limiting surface, and one side of the sensor rotor 20 (such as Figure 4 The rear side shown in FIG. 1 ) can be in contact with the limit surface, and the other side of the sensor rotor 20 (as shown in FIG. Figure 4 The front side shown in the figure can be abutted and matched with the limiting collar 50 to limit the position of the sensor rotor 20, so as to prevent the sensor rotor 20 from moving along the axial direction of the motor shaft 40 (such as Figure 4 The sensor rotor 20 can be prevented from moving in the front-to-back direction (as shown), thereby improving the rotation stability of the sensor rotor 20.

[0050] like Figure 2 , Figure 7and Figure 8 According to some embodiments of the utility model, the sensor rotor 20 may have a connecting key 21, and the motor shaft 40 may be provided with a slot 41. The connecting key 21 may be plugged into the slot 41 to enable the sensor rotor 20 and the motor shaft 40 to be key-connected, thereby realizing the installation of the sensor rotor 20 on the motor shaft 40. The key connection method can improve the transmission efficiency of the sensor rotor 20 and the motor shaft 40, thereby ensuring that the motor shaft 40 rotates to drive the sensor rotor 20 to rotate relative to the sensor stator assembly 10, and is easy to assemble. Of course, the sensor rotor 20 may also be provided with a slot 41, and the motor shaft 40 may be provided with a connecting key 21.

[0051] In some embodiments, the connecting key 21 can be integrally formed with the sensor rotor 20, and the connecting key 21 is plugged into and matched with the slot 41 on the motor shaft 40 to achieve a key connection between the sensor rotor 20 and the motor shaft 40; of course, the connecting key 21 can also be integrally formed with the motor shaft 40, and the connecting key 21 is plugged into and matched with the slot 41 on the sensor rotor 20 to achieve a key connection between the motor shaft 40 and the sensor rotor 20.

[0052] like Figure 1 and Figure 2 As shown, according to some embodiments of the utility model, the motor 100 also includes a housing 30 and a sensor stator assembly 10, the sensor stator assembly 10 is arranged on the housing 30, and the sensor stator assembly 10 is fixedly connected to the housing 30, the motor shaft 40 can be arranged on the housing 30, and the motor shaft 40 can rotate relative to the housing 30, for example, the motor shaft 40 can be arranged in the housing 30, and the electric shaft 40 can drive the sensor rotor 20 to rotate relative to the sensor stator assembly 10, wherein the sensor stator assembly 10 and the sensor rotor 20 cooperate to form a position sensor, and the sensor rotor 20 rotates relative to the sensor stator assembly 10 to ensure the normal operation of the position sensor; it can be understood that the position sensor can be an eddy current position sensor, and the eddy current position sensor is arranged in the housing 30, which can realize the detection of the position of the eddy current of the motor 100.

[0053] like Figure 2 and Figure 3As shown, according to some embodiments of the utility model, a bearing 60 is arranged on the motor shaft 40, and the housing 30 has a bearing cavity 34, and the bearing cavity 34 is used to install the bearing 60, and the outer ring of the bearing 60 contacts the housing 30, and the inner ring of the bearing 60 contacts the motor shaft 40, and the inner ring and the outer ring of the bearing 60 rotate relative to each other, which can reduce the friction between the motor shaft 40 and the housing 30, and can reduce the resistance to relative rotation between the motor shaft 40 and the housing 30, so that the rotation of the motor shaft 40 is smoother, which can improve the performance of the motor 100, reduce energy consumption, etc., and the sensor rotor 20 rotates synchronously with the motor shaft 40, so the setting of the bearing 60 can also improve the performance of the position sensor.

[0054] The sensor stator assembly 10 is defined with an avoidance hole 16 , wherein the outer diameter of the bearing 60 is smaller than the aperture of the avoidance hole 16 , so that the bearing 60 can be installed into the bearing cavity 34 by passing through the avoidance hole 16 , which facilitates the installation of the bearing 60 .

[0055] like Figure 1 and Figure 2 As shown, in some embodiments, along the extension direction of the motor shaft 40 (such as Figure 2 As shown in the front-to-back direction, the bearing 60, the sensor stator assembly 10 and the sensor rotor 20 are arranged in sequence, which can prevent the sensor rotor 20 from interfering with the sensor stator assembly 10 on the basis of improving the smoothness of the rotation of the motor shaft 40, and can improve the reliability of the position sensor. The overall structure is compact and can save space. On the basis of ensuring the practical performance of the motor 100, it is conducive to the miniaturization of the motor 100, and at the same time the structure can be simplified for easy assembly.

[0056] A portion of the limiting collar 50 can be located in the avoidance hole 16, which can make the structure of the motor 100 more compact and facilitate the miniaturization of the motor 100. At the same time, another portion of the limiting collar 50 can be exposed to the open side of the avoidance hole 16 (such as Figure 2 The rear side shown in the figure can ensure that the sensor rotor 20 and the sensor stator assembly 10 have a certain distance, which is convenient for adjusting the length of the portion of the limiting ring 50 exposed outside the avoidance hole 16, and can prevent the sensor rotor 20 from interfering with the sensor stator assembly 10, thereby improving the reliability of the position sensor.

[0057] Furthermore, by adjusting the length of the portion of the limiting collar 50 exposed outside the avoidance hole 16, the spacing between the sensor rotor 20 and the sensor stator assembly 10 can be controlled, which is convenient for operation; of course, the limiting collar 50 as a whole can be located in the avoidance hole 16, which can reduce the spacing between the sensor rotor 20 and the sensor stator assembly 10, which is beneficial to improving the performance of the position sensor.

[0058] like Figure 2-Figure 4 As shown, according to some embodiments of the present invention, the sensor stator assembly 10 includes: a housing 11 and a circuit board 12. The housing 11 is connected to the housing 30 to realize the installation of the sensor stator assembly 10. The housing 11 defines an installation cavity. The circuit board 12 is arranged in the installation cavity, which is conducive to sealing the circuit board 12. The circuit board 12 is sealed with a sealant 13 on the open side of the installation cavity (such as Figure 4 The front side shown in the figure can seal the circuit board 12 to completely isolate the circuit board 12 from external foreign matter and reduce the probability of external foreign matter interfering with the circuit board 12. The outside of the circuit board 12 is protected by the shell 11 and the sealant 13, which can improve the reliability of the position sensor and help to increase the service life of the position sensor.

[0059] like Figure 5 and Figure 6 As shown, in some embodiments, the shell 11 may have a positioning column 14, and the outer shell 30 may have a positioning hole 32. The positioning hole 32 is plugged into and matched with the positioning hole 32, which can play a role in positioning the installation of the sensor stator assembly 10. On the one hand, it can prevent the shell 11 from being disengaged from the outer shell 30 during the installation of the sensor stator assembly 10, so as to improve the stability of the installation of the sensor stator assembly 10 and facilitate assembly. On the other hand, it can improve the assembly accuracy of the sensor stator assembly 10, thereby improving the reliability of the operation of the sensor stator assembly 10. Of course, the positioning hole 32 can also be set on the shell 11, and the positioning column 14 is set on the outer shell 30.

[0060] like Figure 5 and Figure 6 As shown, in some embodiments, the shell 11 has a first mounting hole 15, the outer shell 30 has a second mounting hole 33, and the shell 11 and the outer shell 30 are fixedly connected by a fastener 70, that is, the fastener 70 can be sequentially penetrated through the first mounting hole 15 and the second mounting hole 33 to connect the shell 11 and the outer shell 30, thereby realizing the installation of the sensor stator assembly 10, wherein the fastener 70 can be a screw, a bolt or the like, which can improve the connection effect between the shell 11 and the outer shell 30, thereby improving the stability of the installation of the sensor stator assembly 10, and is easy to operate, easy to assemble, and low cost.

[0061] like Figure 3 and Figure 4As shown, in some embodiments, the shell 11 includes a shell body 111 and a connecting portion 112. The shell body 111 has an installation cavity for installing the circuit board 12. The connecting portion 112 is located at the outer periphery of the shell body 111. A positioning column 14 or a positioning hole 32 is provided on the connecting portion 112. A first mounting hole 15 may also be provided on the connecting portion 112, which is convenient for inserting a fastener 70. The connecting portion 112 is arranged on the outer side of the shell body 111 to avoid interference with components such as the motor shaft 40, which is beneficial to the connection between the connecting portion 112 and the outer shell 30. At the same time, the size of the shell body 111 can be reduced, the weight of the sensor stator assembly 10 can be reduced, and the processing cost can be reduced. At the same time, the space inside the outer shell 30 can be fully utilized, the space utilization rate can be improved, and it is easy to assemble.

[0062] like Figure 3 As shown, in the extension direction of the motor shaft 40 (such as Figure 3 In the front-to-back direction (as shown in the figure), the size of the connecting portion 112 is not larger than the size of the shell body 111, which can prevent the connecting portion 112 from protruding from the surface of the shell body 111 and reduce the size of the connecting portion 112 on the basis of meeting the installation requirements, thereby reducing the weight and manufacturing cost, and at the same time reducing the probability of the sensor rotor 20 interfering with the sensor stator assembly 10 during the rotation of the motor shaft 40, thereby improving the reliability of the position sensor.

[0063] like Figure 2-Figure 4 As shown, in some embodiments, a portion of the housing 30 is oriented toward the sensor stator assembly 10 (eg, Figure 2 The shell body 111 is protruded from the front to the back (as shown in the figure) to form a mounting boss 31, and the middle part of the mounting boss 31 has a mounting space 311. The connecting part 112 is connected to the mounting boss 31 to realize the installation of the shell 11 on the outer shell 30, and a part of the shell body 111 extends into the mounting space 311. On the one hand, the mounting space 311 can realize the limitation of the shell body 111, and on the other hand, it can improve the compactness of the structure, reduce the probability of the shell 11 and the outer shell 30 being out of engagement, and further improve the reliability of the installation of the sensor stator assembly 10.

[0064] like Figure 2 , Figure 5 and Figure 6As shown, in some embodiments, an avoidance notch 312 is provided on the mounting boss 31, and the avoidance notch 312 is used to avoid the wire outlet portion 113 of the shell body 111, which can prevent the wire outlet portion 113 from interfering with the mounting boss 31, and facilitate the lead-out of the wire harness 17 of the sensor stator assembly 10. Here, the wire harness 17 extends into the mounting cavity and is connected to the circuit board 12. The wire outlet portion 113 is arranged at the avoidance notch 312, which can prevent the wire harness 17 from interfering with the movable parts in the motor 100 (such as the motor shaft 40 and the sensor rotor 20), for example, preventing the wire harness 17 from being entangled with the motor shaft 40 to prevent the motor shaft 40 from rotating to drive the wire harness 17 to move, thereby improving the reliability of the position sensor and facilitating the management and maintenance of the wire harness 17.

[0065] like Figure 2 and Figure 4 As shown, in some embodiments, after the limiting collar 50 is fixedly connected to the motor shaft 40, the limiting collar 50 can be located on a side of the sensor rotor 20 close to the housing 30 (such as Figure 2 The front side of the sensor rotor 20 is shown in the figure), and the motor shaft 40 can be a stepped shaft, so that the rear side of the sensor rotor 20 abuts against the motor shaft 40, and the front side of the sensor rotor 20 abuts against the limiting collar 50 to limit the sensor rotor 20.

[0066] like Figure 2 and Figure 8 As shown, in some embodiments, the motor shaft 40 is axially (eg Figure 8 A first groove 42 and a second groove 43 are provided in the front-to-back direction (as shown in the figure), and the first groove 42 and the second groove 43 are arranged in sequence from the back to the front direction, and a limiting boss 421 is formed on the rear side of the first groove 42. The sensor rotor 20 is sleeved on the outer periphery of the first groove 42, and the rear side of the sensor rotor 20 abuts against the limiting boss 421. The limiting ring 50 is sleeved on the outer periphery of the first groove 42, and the front side of the sensor rotor 20 abuts against the limiting ring 50 to limit the sensor rotor 20. The bearing 60 is sleeved on the outer periphery of the second groove 43, and the bearing 60 can abut against the limiting bosses formed by the housing 30 and the first groove 42 respectively to limit the bearing 60.

[0067] like Figure 1 As shown, according to some embodiments of the present invention, the housing 30 includes a base and an end cover 301, and the end cover 301 is arranged on one side of the base (such as Figure 2The sensor stator assembly 10 is arranged in the accommodating cavity, and the sensor stator assembly 10 is fixedly connected to the end cover 301, which can protect the sensor stator assembly 10 and prevent the sensor stator assembly 10 from being damaged by external forces or environmental factors, which is beneficial to extending the service life of the sensor stator assembly 10 and facilitating maintenance or replacement, and at the same time can improve the working stability and reliability of the sensor stator assembly 10.

[0068] In some embodiments, the motor 100 further includes a stator and a rotor, and the stator and the rotor are disposed in the accommodating cavity.

[0069] According to the motor assembly of the embodiment of the utility model, including the motor 100, by adopting the above-mentioned motor 100, the working stability of the position sensor can be improved, the stability of the eddy current position detection of the motor 100 can be improved, and then the working stability of the motor assembly can be improved.

[0070] The vehicle according to the embodiment of the utility model includes a motor assembly. By adopting the above-mentioned motor assembly, the stability of eddy current position detection of the motor assembly can be improved, thereby improving the driving stability of the vehicle.

[0071] Other structures and operations of the motor 100 according to the embodiment of the utility model are known to those skilled in the art and will not be described in detail here. In the description of the utility model, "first feature" and "second feature" may include one or more of these features. Among them, the up-down direction, left-right direction and front-back direction are based on the up-down direction, left-right direction and front-back direction shown in the figure.

[0072] In the description of the present utility model, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature "above", "above" and "above" a second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0074] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A motor, characterized in that: include: A motor shaft, wherein a limiting boss is provided on the motor shaft; A sensor rotor, wherein the sensor rotor is arranged on the motor shaft; A limiting collar, wherein the limiting collar is sleeved on the outer circumference of the motor shaft and has an interference fit with the motor shaft, Wherein, one side of the sensor rotor abuts against the limiting boss, and the other side of the sensor rotor abuts against and cooperates with the limiting collar.

2. The motor according to claim 1, characterized in that A portion of the motor shaft is recessed inwardly along the radial direction of the motor shaft to form a groove, and the limiting boss is formed on one side of the groove.

3. The motor according to claim 1, characterized in that One of the sensor rotor and the motor shaft has a connection key, and the other of the sensor rotor and the motor shaft is provided with a slot, and the connection key is suitable for being plugged into the slot to enable the sensor rotor and the motor shaft to be key-connected.

4. The motor according to claim 3, characterized in that The connecting key is integral with one of the sensor rotor and the motor shaft.

5. The motor according to claim 1, characterized in that The motor further comprises a housing and a sensor stator assembly. The sensor stator assembly is arranged on the housing and fixedly connected to the housing. The motor shaft is arranged on the housing and can rotate relative to the housing.

6. The motor according to claim 5, characterized in that A bearing is provided on the motor shaft, the housing has a bearing cavity for mounting the bearing, the sensor stator assembly is arranged on one side of the bearing cavity and defines a avoidance hole, and the outer diameter of the bearing is smaller than the aperture of the avoidance hole.

7. The motor according to claim 6, characterized in that Along the extension direction of the motor shaft, the bearing, the sensor stator assembly, and the sensor rotor assembly are arranged in sequence, and at least a portion of the limiting collar is located in the avoidance hole.

8. The motor according to claim 5, characterized in that The sensor stator assembly comprises: a shell connected to the outer shell; The housing defines a mounting cavity, the circuit board is arranged in the mounting cavity and an open side of the mounting cavity is sealed by a sealant.

9. The motor according to claim 8, characterized in that One of the shell and the outer shell has a positioning column, and the other of the shell and the outer shell has a positioning hole, and the positioning holes are plug-fitted with each other.

10. The motor according to claim 8, characterized in that The shell has a first mounting hole, the outer shell has a second mounting hole, and the shell and the outer shell are fixedly connected by fasteners penetrating the first mounting hole and the second mounting hole.

11. The motor according to any one of claims 8 to 10, characterized in that: The shell includes a shell body and a connecting portion, the shell body has the installation cavity, the connecting portion is located at the periphery of the shell body and is connected to the outer shell, wherein in the extension direction of the motor shaft, the size of the connecting portion is not larger than the size of the shell body.

12. The motor according to claim 11, characterized in that A portion of the housing protrudes toward the direction close to the sensor stator assembly to form a mounting boss, a middle portion of the mounting boss has a mounting space, the connecting portion is connected to the mounting boss, and a portion of the housing body extends into the mounting space.

13. The motor according to claim 12, characterized in that The mounting boss is provided with an escape notch, and the escape notch is used to escape the wire outlet portion of the shell body.

14. A motor assembly, characterized in that: Comprising a motor according to any one of claims 1-13.

15. A vehicle, characterized in that: Comprising the motor assembly according to claim 14.

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