Motor, fan and electronic equipment

Abstract

The invention provides a motor, a fan and electronic equipment, and relates to the technical field of motors. The motor comprises a base assembly, a bearing part, a mandrel, a stator and a rotor, a mounting cavity is defined by the base assembly, an opening is formed in one end of the mounting cavity, and the aperture of the opening is smaller than the inner diameter of the mounting cavity; the bearing part is arranged in the mounting cavity, a bearing outer ring of the bearing part is fixedly matched with the base assembly, and the bearing part and the peripheral edge of the opening are spaced and jointly define a limiting gap; the mandrel is connected with a bearing inner ring of the bearing piece so as to rotate relative to the base assembly, and a limiting structure is arranged on the mandrel and located in the limiting gap; the stator is fixedly arranged on the outer side of the base assembly; the rotor is connected with the mandrel. The motor is beneficial for preventing the rotor from deflecting or falling off, and the operation quality of the motor is improved.

Description

Technical Field

[0001] This application relates to the technical field of motors, and particularly to a motor, a fan and an electronic device. Background Art

[0002] A motor is one of the core components of a fan, including a stator, a rotor, a bearing and a base. A shaft tube is provided on the base for placing the bearing. The stator is located outside the shaft tube, and the rotor has a rotating shaft which is placed in the through hole of the bearing.

[0003] During the operation of the motor, both the stator and the bearing remain stationary relative to the base, and the rotor rotates to drive the fan blades to rotate.

[0004] However, during the high-speed rotation of the rotor, due to the reaction force, a buoyancy force rising along the axial direction of the rotating shaft will be generated, resulting in problems such as the yaw or detachment of the rotor, affecting the normal operation of the motor. Summary of the Invention

[0005] The embodiments of this application provide a motor, a fan and an electronic device, which are beneficial to preventing the yaw or detachment of the rotor and improving the operation quality of the motor.

[0006] In a first aspect, the embodiments of this application provide a motor, including: a base assembly defining an installation cavity, one end of the installation cavity having an opening, the aperture of the opening being smaller than the inner diameter of the installation cavity; a bearing member disposed in the installation cavity, the outer ring of the bearing of the bearing member being fixedly fitted with the base assembly, the bearing member being spaced from the periphery of the opening and jointly defining a limiting gap; a core shaft connected to the inner ring of the bearing of the bearing member to rotate relative to the base assembly, the core shaft being provided with a limiting structure, and the limiting structure being located in the limiting gap; a stator fixedly disposed outside the base assembly; and a rotor connected to the core shaft.

[0007] In a possible implementation manner, the base assembly includes: a base having an installation hole; a shaft tube, the shaft tube being embedded in the installation hole, the inner side of the shaft tube defining the installation cavity, one end of the shaft tube being open; and a fixing ring fixedly disposed at the open end of the shaft tube, the opening being formed in the fixing ring, and the fixing ring being spaced from the bearing member to define a limiting gap.

[0008] In a possible implementation, the shaft tube includes a first section and a second section along the axis. The second section is located on the side of the first section facing the opening. The inner wall of the first section is in interference fit with the outer ring of the bearing member; the inner wall of the second section is radially spaced from the outer ring of the bearing member and together defines an installation gap; the fixing ring includes an installation portion and a limiting portion. The installation portion extends along the axis of the core shaft and is inserted into the installation gap. The limiting portion extends along the radial direction of the core shaft and is axially opposite to the bearing member. The opening is formed in the limiting portion, and the limiting portion is in limiting cooperation with the limiting structure.

[0009] In a possible implementation, the fixing ring further includes a supporting boss. The supporting boss is located at the connection between the installation portion and the limiting portion, and the supporting boss abuts against the outer ring of the bearing member axially.

[0010] In a possible implementation, a positioning notch communicating with the opening is further provided on the fixing ring; the shape of the limiting structure is adapted to the positioning notch so that the limiting structure is installed into the installation cavity through the positioning notch.

[0011] In a possible implementation, the positioning notch includes an inner groove surface radially opposite to the opening, and the inner groove surface is formed as an arc surface; the limiting structure has an outer wall surface opposite to the inner groove surface, and the outer wall surface is an arc surface.

[0012] In a possible implementation, the inner diameter d1 of the opening, the diameter d2 of the inner groove surface, the outer diameter d3 of the core shaft, and the diameter d4 of the outer wall surface satisfy: d3 < d1 < d4 < d2.

[0013] In a possible implementation, there are multiple positioning notches, and the multiple positioning notches are circumferentially spaced along the opening; the limiting structure corresponds to the positioning notches one by one.

[0014] In a possible implementation, the limiting structure includes a first side surface facing the fixing ring axially and a second side surface facing the bearing member. The distance t1 between the first side surface and the fixing ring satisfies: t1 > 0; and / or, the distance t2 between the second side surface and the bearing member satisfies: t2 > 0.

[0015] In a second aspect, the present application provides a fan, including: a frame; an impeller, the impeller including a plurality of fan blades; any one of the above motors, the base assembly of the motor being fixedly connected to the frame, and the rotor of the motor being fixedly connected to the impeller.

[0016] In a third aspect, the present application provides an electronic device including the fan of the second aspect.

[0017] The motor, fan, and electronic device provided by this application. The motor is provided with a base assembly, a bearing member, a core shaft, a stator, and a rotor. Among them, the bearing member is located in the installation cavity of the base assembly, and the bearing member has an outer bearing ring and an inner bearing ring. The outer bearing ring is fixedly connected to the inner wall of the installation cavity, the inner bearing ring is connected to the core shaft, the rotor is connected to the core shaft, and the rotor is used to be connected to the impeller of the fan. The stator is fixedly connected to the base assembly and is located outside the base assembly. After the stator is energized, a rotating magnetic field is generated to drive the core shaft and the rotor to rotate, thereby converting electrical energy into mechanical energy and realizing the driving function of the motor. During the rotation of the rotor, the core shaft will be driven by a lifting force along its own axial direction to move away from the installation cavity. Therefore, a limiting structure needs to be provided on the core shaft, leaving a certain gap between the bearing member and the peripheral edge of the opening of the installation cavity to form a limiting gap, so that the limiting structure is located in the limiting gap. In this way, when the core shaft has a tendency to move away from the installation cavity along the axial direction, the peripheral edge of the opening can prevent the core shaft from continuing to move, thereby preventing the rotor and the core shaft from deflecting or disengaging from the installation cavity, which is beneficial to ensuring the safe and stable operation of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application.

[0019] Figure 1 Schematic structural diagram of the motor provided by the embodiment of this application;

[0020] Figure 2 is Figure 1 partial enlarged view at A in

[0021] Figure 3 Schematic structural diagram of the fixing ring of the motor provided by the embodiment of this application;

[0022] Figure 4 Schematic structural diagram of the limiting structure and the fixing ring forming a limiting fit provided by the embodiment of this application;

[0023] Figure 5 Schematic structural diagram of the limiting structure and the fixing ring when the core shaft of the motor provided by the embodiment of this application is assembled;

[0024] Figure 6 Schematic structural diagram of the fixing ring of the motor provided by another embodiment of this application;

[0025] Figure 7 Schematic structural diagram of the fixing ring of the motor provided by yet another embodiment of this application.

[0026] Description of the reference numerals:

[0027] 100 - motor;

[0028] 110 - Base assembly; 111 - Base; 112 - Shaft tube; 1121 - First section; 1122 - Second section; 113 - Fixed ring; 1131 - Mounting portion; 1132 - Limiting portion; 1132a - Opening; 1132b - Positioning notch; 1132b’ - Inner groove surface; 1133 - Support boss;

[0029] 120 - Bearing component; 121 - Limiting clearance;

[0030] 130 - Mandrel; 131 - Limiting structure; 1311 - Outer wall surface;

[0031] 140 - Stator;

[0032] 150 - Rotor.

[0033] Through the above - mentioned drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed Description of the Embodiment

[0034] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0035] As shown in the background art, in the prior art, a motor includes a stator, a rotor, a bearing, and a base. The base is provided with a shaft tube for placing the bearing. The stator is located outside the shaft tube, and the rotor has a rotating shaft which is placed in the through - hole of the bearing. During the operation of the motor, both the stator and the bearing remain stationary relative to the base, and the rotor rotates to drive the fan blades to rotate. However, during the high - speed rotation of the rotor, due to the reaction force, a buoyancy force rising along the axial direction of the rotating shaft is generated, resulting in problems such as the yaw or detachment of the rotor, affecting the normal operation of the motor.

[0036] In view of the above technical problems, embodiments of the present application provide a motor, a fan, and an electronic device. The motor is provided with a base assembly, a bearing member, a core shaft, a stator, and a rotor. Among them, the bearing member is located in the installation cavity of the base assembly, and the bearing member has an outer bearing ring and an inner bearing ring. The outer bearing ring is fixedly connected to the inner wall of the installation cavity, the inner bearing ring is connected to the core shaft, the rotor is connected to the core shaft, and the rotor is used to be connected to the impeller of the fan. The stator is fixedly connected to the base assembly and is located outside the base assembly. After the stator is powered on, a rotating magnetic field is generated to drive the core shaft and the rotor to rotate, thereby converting electrical energy into mechanical energy to achieve the driving effect of the motor. During the rotation of the rotor, the core shaft will be driven by a lift force along its own axial direction to move away from the installation cavity. Therefore, a limiting structure needs to be provided on the core shaft, leaving a certain gap between the bearing member and the peripheral edge of the opening of the installation cavity to form a limiting gap, and the limiting structure is located in the limiting gap. In this way, when the core shaft has a tendency to move away from the installation cavity along the axial direction, the peripheral edge of the opening can prevent the core shaft from continuing to move, thereby preventing the rotor and the core shaft from wobbling or disengaging from the installation cavity, which is beneficial to ensuring the safe and stable operation of the motor.

[0037] The following uses specific embodiments to elaborate in detail on the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems. These several specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The following will describe the embodiments of the present application with reference to the accompanying drawings:

[0038] It should be noted that the motor provided by the embodiments of the present application can be applied to various different fans.

[0039] See Figures 1 to 3 As shown, the motor 100 of the embodiment of the present application includes: a base assembly 110, a bearing member 120, a core shaft 130, a stator 140, and a rotor 150. Among them, the base assembly 110 defines an installation cavity, one end of the installation cavity has an opening 1132a, and the aperture of the opening 1132a is smaller than the inner diameter of the installation cavity; the bearing member 120 is disposed in the installation cavity, the outer bearing ring of the bearing member 120 is fixedly fitted with the base assembly 110, and the bearing member 120 is spaced from the peripheral edge of the opening 1132a and jointly defines a limiting gap 121; the core shaft 130 is connected to the inner bearing ring of the bearing member 120 to rotate relative to the base assembly 110, and a limiting structure 131 is provided on the core shaft 130, and the limiting structure 131 is located in the limiting gap 121; the stator 140 is fixedly disposed outside the base assembly 110; the rotor 150 is connected to the core shaft 130.

[0040] In the embodiment of the present application, the stator 140 can be arranged to include an iron core and windings. When current passes through the windings, a magnetic field will be generated. By applying three-phase alternating current to the windings, a rotating magnetic field can be generated. The rotor 150 or the core shaft 130 also has an iron core and windings. The rotation of the magnetic field generated by the stator 140 will cause the wires on the rotor 150 to cut the magnetic induction lines to generate an induced current, and then generate a magnetic force to drive the rotor 150 to rotate. The rotor 150 is connected to the impeller of the fan, thereby converting electrical energy into mechanical energy to drive the impeller to rotate. Of course, the motor 100 provided in the embodiment of the present application is not only applicable to fans, but also applicable to any device that needs to rotate the motor 100, such as mixers, conveyor belts, washing machines, etc. The embodiment of the present application does not limit this.

[0041] Since a lifting force along the axial direction of the core shaft 130 will be generated during the rotation of the rotor 150, the rotor 150 drives the core shaft 130 to move axially under the action of the lifting force, which may cause the rotor 150 to yaw and affect the rotational stability of the rotor 150. Even under certain external force impacts or after the motor 100 is used for a long time, the rotor 150 may drive the core shaft 130 to fall off from the installation cavity, affecting the normal operation of the motor 100. Therefore, in the embodiment of the present application, a limiting structure 131 is provided on the core shaft 130, and a certain gap is left between the bearing member 120 and the periphery of the opening 1132a of the installation cavity to form a limiting gap 121, so that the limiting structure 131 is located in the limiting gap 121. In this way, when the core shaft 130 has a tendency to move away from the installation cavity along the axial direction, the periphery of the opening 1132a can prevent the core shaft 130 from continuing to move, thereby preventing the rotor 150 and the core shaft 130 from yawing or disengaging from the installation cavity, which is beneficial to ensuring the safe and stable operation of the motor 100.

[0042] Furthermore, the limiting cooperation between the limiting structure 131 and the limiting gap 121 can also play a role in supporting the rotation of the rotor 150, ensuring the rotational stability of the rotor 150, reducing flutter noise, and being beneficial to improving the operation quality of the motor 100 and the use experience of the fan.

[0043] Among them, the limiting structure 131, the core shaft 130 and the rotor 150 can be made by an integral molding process, or can be separately manufactured and fixed together by welding or the like, or the shape of the limiting structure 131 can be set by laser cutting or the like. The embodiment of the present application does not limit this and can be reasonably selected according to actual needs.

[0044] In some implementable ways, refer to Figures 1 to 3As shown in the figure, the base assembly 110 of the embodiment of the present application includes: a base 111, a shaft tube 112, and a fixing ring 113. The base 111 has a mounting hole; the shaft tube 112 is embedded in the mounting hole, an installation cavity is defined inside the shaft tube 112, and one end of the shaft tube 112 is open; the fixing ring 113 is fixedly arranged at the open end of the shaft tube 112, an opening 1132a is formed in the fixing ring 113, and the fixing ring 113 is spaced from the bearing member 120 to define a limiting gap 121.

[0045] In a specific implementation, the base 111 can provide a stable mounting platform. The motor 100 can be fixed to the frame of the fan through the base 111. The shaft tube 112 is fixed in the mounting hole, and one end is open for the installation and disassembly of the bearing member 120. The fixing ring 113 is fixedly connected to the shaft tube 112. A limiting gap 121 is formed between the fixing ring 113 and the bearing member 120. The limiting gap 121 forms a limiting fit with the limiting structure 131. When the motor 100 operates, the fixing ring 113 can effectively prevent the rotor 150 from shifting or falling off. At the same time, the limiting gap 121 can reduce the friction between the inner ring of the bearing of the bearing member 120 and the fixing ring 113 during the rotation of the bearing inner ring along the mandrel 130, which is beneficial to reducing the noise during the operation of the motor 100, reducing the wear of the fixing ring 113 and the bearing member 120, and thus improving the service life of the motor 100.

[0046] Among them, the shapes and sizes of the base 111, the shaft tube 112, and the fixing ring 113 can be set according to the specific application scenario of the motor 100 to meet the requirements of different devices. The embodiment of the present application does not limit this.

[0047] In some realizable ways, as shown in Figures 1 to 3 the figure, the shaft tube 112 of the embodiment of the present application includes a first section 1121 and a second section 1122 along the axial direction. The second section 1122 is located on the side of the first section 1121 facing the opening 1132a. The inner wall of the first section 1121 is in interference fit with the outer ring of the bearing of the bearing member 120; the inner wall of the second section 1122 is spaced from the outer ring of the bearing of the bearing member 120 along the radial direction and jointly defines an installation gap; the fixing ring 113 includes a mounting portion 1131 and a limiting portion 1132. The mounting portion 1131 extends along the axial direction of the mandrel 130 and is inserted into the installation gap. The limiting portion 1132 extends along the radial direction of the mandrel 130 and is axially opposite to the bearing member 120. The opening 1132a is formed in the limiting portion 1132, and the limiting portion 1132 is in limiting fit with the limiting structure 131.

[0048] It can be understood that the inner wall of the first section 1121 has an interference fit with the outer ring of the bearing. In this way, when installing the bearing member 120, it is only necessary to press the bearing member 120 forcefully into the installation cavity to complete the installation, which is beneficial to improving the assembly efficiency of the bearing member 120. At the same time, the interference fit can also ensure that the bearing will not loosen or deform due to vibration or impact during the rotation of the mandrel 130, which is beneficial to improving the operating stability of the motor 100.

[0049] Furthermore, there is an installation gap formed by spacing between the inner wall of the second section 1122 and the outer ring of the bearing to provide an installation space for the fixing ring 113, ensuring that the limiting portion 1132 of the fixing ring 113 is located on one side of the bearing member 120 along the axial direction of the mandrel 130 and forms a limiting gap 121 with the bearing member 120. The mandrel 130 is inserted into the bearing member 120 through the opening 1132a, and the limiting structure 131 is located in the limiting gap 121. The limiting portion 1132 can limit the axial movement of the limiting structure 131 along the mandrel 130, thereby preventing the mandrel 130 and the rotor 150 from disengaging from the installation cavity or shifting, which is beneficial to ensuring the operating stability of the motor 100.

[0050] Among them, the installation portion 1131 and the shaft tube 112 can be connected by welding, gluing or other methods, and the embodiments of the present application do not limit this, as long as it is ensured that the installation portion 1131 and the inner wall of the shaft tube 112 can be stably connected.

[0051] In some implementable ways, as shown in Figures 1 to 3 the fixing ring 113 of the embodiment of the present application further includes a supporting boss 1133. The supporting boss 1133 is located at the connection between the installation portion 1131 and the limiting portion 1132, and the supporting boss 1133 abuts against the outer ring of the bearing of the bearing member 120 axially.

[0052] In some embodiments, the fixing ring 113 is fixedly connected to the shaft tube 112, and the supporting boss 1133 of the fixing ring 113 abuts against the outer ring of the bearing, which can limit the position of the bearing member 120 and prevent the bearing member 120 from moving axially along the mandrel 130 together with the mandrel 130, which is beneficial to further improving the stability of the bearing member 120 and ensuring the operating quality of the motor 100.

[0053] In some implementable ways, as shown in Figures 1 to 4 the fixing ring 113 of the embodiment of the present application is also provided with a positioning notch 1132b communicating with the opening 1132a; the shape of the limiting structure 131 is adapted to the positioning notch 1132b, so that the limiting structure 131 is installed into the installation cavity through the positioning notch 1132b.

[0054] It should be noted that when assembling the motor 100, the bearing member 120 can be first installed in the installation cavity, and after the installation portion 1131 of the fixing ring 113 is connected to the inner wall of the shaft tube 112, the limiting structure 131 on the core shaft 130 is aligned with the positioning notch 1132b, and the core shaft 130 can be smoothly installed in the installation cavity. The limiting structure 131 enters the limiting gap 121 through the positioning notch 1132b. After being installed in the installation cavity, it is only necessary to rotate the core shaft 130 so that the limiting structure 131 and the positioning notch 1132b are offset to ensure that the core shaft 130 cannot be axially disengaged from the installation cavity, thereby achieving the assembly of the core shaft 130. In this way, the assembly steps of the core shaft 130 are relatively simple, which is conducive to improving the assembly efficiency of the motor 100, and at the same time, it can avoid excessive wear of the fixing ring 113, reduce the debris generated by friction during the assembly process of the motor 100, and help reduce the noise during operation and increase the service life of the motor 100.

[0055] In addition, when the motor 100 is running, the core shaft 130 rotates at high speed, so it is difficult for the limiting structure 131 to slide out of the installation cavity in alignment with the positioning notch 1132b, which can ensure that the limiting function of the fixing ring 113 is not affected and the stability of the operation of the motor 100 is guaranteed.

[0056] The shapes of the limiting structure 131 and the positioning notch 1132b are not limited in the present embodiment. For example, the limiting structure 131 and the positioning notch 1132b can be Figure 3 , Figure 6 and Figure 7 The number of the positioning notches 1132b shown in the shapes of triangle, arc, square, etc. can be reasonably selected according to the size and application scenario of the motor 100, and the embodiment of the present application does not limit this.

[0057] In some possible implementations, see Figures 1 to 5 As shown, the positioning notch 1132b of the embodiment of the present application includes an inner groove surface 1132b' radially opposite to the opening 1132a, and the inner groove surface 1132b' is formed as an arc surface; the limiting structure 131 has an outer wall surface 1311 opposite to the inner groove surface 1132b', and the outer wall surface 1311 is an arc surface.

[0058] In some embodiments, the inner groove surface 1132b' and the outer wall surface 1311 are both configured as arc surfaces, which can make the contact surface between the inner groove surface 1132b' and the outer wall surface 1311 smoother, reduce the wear when installing the mandrel 130, avoid a large amount of debris during assembly, and help reduce the noise when the motor 100 is running. At the same time, the arc surface is more conducive to optimizing the force distribution. When subjected to force, the arc surface can disperse the force more evenly, reduce stress concentration, and thus increase the service life of the motor 100.

[0059] Furthermore, the machining of the arc surface is simpler, which is beneficial to improving the machining accuracy and efficiency and reducing the production cost of the motor 100.

[0060] In some implementable ways, refer to Figures 1 to 5 As shown, the inner diameter d1 of the opening 1132a, the diameter d2 of the inner groove surface 1132b', the outer diameter d3 of the mandrel 130, and the diameter d4 of the outer wall surface 1311 of the embodiment of the present application satisfy: d3 < d1 < d4 < d2.

[0061] Thus, d3 < d1 and d4 < d2 can ensure that the limiting structure 131 of the mandrel 130 smoothly enters the limiting gap 121 through the positioning notch 1132b, and d1 < d4 can ensure that after the limiting structure 131 enters the limiting gap 121, the limiting structure 131 can form a limiting fit with the limiting portion 1132, avoiding the mandrel 130 from slipping out and ensuring the stability of the operation of the motor 100.

[0062] In some implementable ways, refer to Figures 1 to 5 As shown, there are multiple positioning notches 1132b in the embodiment of the present application, and the multiple positioning notches 1132b are circumferentially spaced along the opening 1132a; the limiting structure 131 corresponds to the positioning notch 1132b one by one.

[0063] In some embodiments, the positioning notch 1132b and the limiting structure 131 are provided in multiple numbers. When installing the mandrel 130, the mandrel 130 can be inserted only when each limiting structure 131 corresponds to the positioning notch 1132b. On the contrary, during the operation of the motor 100, the mandrel 130 can be withdrawn only when each limiting structure 131 corresponds to the positioning notch 1132b, thereby reducing the possibility of the mandrel 130 slipping out through the opening 1132a. Among them, the shapes of the positioning notches 1132b can be set to the same shape to reduce the assembly difficulty and improve the assembly efficiency, or can be set to different shapes to reduce the probability of the mandrel 130 slipping out. The embodiment of the present application does not limit this, and the shapes of the positioning notches 1132b and the limiting structure 131 are mutually adapted.

[0064] In some implementable ways, refer to Figure 1 and Figure 2 As shown, the limiting structure 131 of the embodiment of the present application includes a first side facing the fixed ring 113 and a second side facing the bearing member 120 along the axial direction. The distance t1 between the first side and the fixed ring 113 satisfies: t1 > 0; and / or, the distance t2 between the second side and the bearing member 120 satisfies: t2 > 0.

[0065] Thus, after the mandrel 130 is inserted into the installation cavity, a certain gap is reserved between the limiting structure 131, the limiting part 1132 of the fixing ring 113, and the bearing member 120. On the one hand, it is convenient for the installation of the mandrel 130. On the other hand, it can reduce the wear of the limiting structure 131 during the rotation of the mandrel 130, which is beneficial to improving the service life of the motor 100.

[0066] See Figure 1 As shown, the embodiment of the present application also provides a fan, including: a frame, an impeller, and any one of the above motors 100; the impeller includes a plurality of fan blades; the base assembly 110 of the motor 100 is fixedly connected to the frame, and the rotor 150 of the motor 100 is fixedly connected to the impeller.

[0067] Among them, the structure and working principle of the motor 100 have been described in detail in the above embodiments, and will not be elaborated here one by one.

[0068] In the embodiment of the present application, the fan can be a centrifugal fan for heat dissipation in an electronic device or a fan for daily use. The embodiment of the present application does not limit this. By installing the above motor 100, the noise generated during the use of the fan can be reduced, the stability of the rotation of the fan blades can be improved, which is beneficial to improving the use experience of the fan.

[0069] The embodiment of the present application also provides an electronic device, including the above fan.

[0070] In the embodiment of the present application, the electronic device can be a notebook computer, a mobile phone, a tablet computer, etc. The embodiment of the present application does not limit this. By installing the fan, the electronic device can be cooled to prevent the electronic device from overheating during operation, which is beneficial to ensuring the operation quality of the electronic device.

[0071] In summary, the embodiments of the present application provide a motor 100, a fan and an electronic device. When assembling the motor 100, the shaft seat can be first fixed in the mounting hole of the base 111, and then the bearing member 120 can be pressed into the mounting cavity. Thereafter, the fixing ring 113 is installed along the mounting gap, and the mounting portion 1131 of the fixing ring 113 is fixedly connected to the inner wall of the shaft seat. After the rotor 150 and the core shaft 130 are connected together, the limiting structure 131 on the shaft seat is aligned with the positioning notch 1132b of the fixing ring 113, and the core shaft 130 is inserted into the mounting cavity. The limiting structure 131 enters the limiting gap 121 through the positioning notch 1132b, and the core shaft 130 is rotated so that the limiting structure 131 and the positioning notch 1132b are offset to complete the installation. Therefore, the operation steps are simple, which is beneficial to improving the assembly efficiency of the motor 100, reducing the wear of parts during the assembly process of the motor 100, and increasing the service life of the motor 100. At the same time, a limiting fit is formed between the limiting structure 131 and the fixing ring 113, which can prevent the rotor 150 and the core shaft 130 from shifting or leaving the installation cavity during the operation of the motor 100, which is beneficial to ensuring the stability of the operation of the motor 100.

[0072] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0073] In the embodiments of the present application, the devices or elements referred to or implied must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

[0074] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0075] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or apparatus.

[0076] The term "plurality" in this text refers to two or more. The term "and / or" in this text is merely a description of the relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0077] It can be understood that in the embodiments of this application, the various numerical numbers involved are only for the convenience of description and are not used to limit the scope of the embodiments of this application.

[0078] It can be understood that in the embodiments of this application, the magnitudes of the sequence numbers of the above processes do not mean the sequence of execution. The execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of this application.

[0079] Those skilled in the art will readily conceive of other embodiments of this application after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common general knowledge or conventional technical means in the technical field not disclosed in this application. The specification and examples are only regarded as exemplary, and the true scope and spirit of this application are pointed out by the following claims.

[0080] It should be understood that this application is not limited to the precise structures already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is only limited by the appended claims.

Claims

1. A motor (100), characterized in that: include: A base assembly (110) defines a mounting cavity, one end of the mounting cavity having an opening (1132a), the aperture of the opening (1132a) being smaller than the inner diameter of the mounting cavity; A bearing member (120) is disposed in the installation cavity, the outer ring of the bearing member (120) is fixedly matched with the base assembly (110), and the bearing member (120) and the peripheral edge of the opening (1132a) are spaced apart and jointly define a limiting gap (121); A core shaft (130) is connected to the inner ring of the bearing of the bearing member (120) so as to rotate relative to the base assembly (110); a limiting structure (131) is provided on the core shaft (130), and the limiting structure (131) is located in the limiting gap (121); A stator (140) is fixedly arranged on the outer side of the base assembly (110); The rotor (150) is connected to the core shaft (130).

2. The motor (100) according to claim 1, characterized in that: The base assembly (110) comprises: A base (111) having a mounting hole; A shaft tube (112), the shaft tube (112) being embedded in the mounting hole, the inner side of the shaft tube (112) defining the mounting cavity, and one end of the shaft tube (112) being open; A fixing ring (113) is fixedly arranged at the open end of the shaft tube (112); the opening (1132a) is formed in the fixing ring (113); and the fixing ring (113) and the bearing member (120) are spaced apart to define a limiting gap (121).

3. The motor (100) according to claim 2, characterized in that: The shaft tube (112) comprises a first section (1121) and a second section (1122) along the axial direction, wherein the second section (1122) is located on a side of the first section (1121) facing the opening (1132a). The inner wall of the first section (1121) is interference-fitted with the outer ring of the bearing member (120); The inner wall of the second section (1122) and the outer ring of the bearing member (120) are radially spaced apart and jointly define a mounting gap; The fixing ring (113) comprises a mounting portion (1131) and a limiting portion (1132), wherein the mounting portion (1131) extends along the axial direction of the core shaft (130) and is inserted into the mounting gap, and the limiting portion (1132) extends along the radial direction of the core shaft (130) and is axially opposite to the bearing member (120), and the opening (1132a) is formed in the limiting portion (1132), and the limiting portion (1132) is limitedly matched with the limiting structure (131).

4. The motor (100) according to claim 3, characterized in that: The fixing ring (113) further comprises a supporting boss (1133), wherein the supporting boss (1133) is located at the connection between the mounting portion (1131) and the limiting portion (1132), and the supporting boss (1133) abuts against the outer ring of the bearing of the bearing member (120) along the axial direction.

5. The motor (100) according to claim 3, characterized in that: The fixing ring (113) is also provided with a positioning notch (1132b) communicating with the opening (1132a); The limiting structure (131) is adapted in shape to the positioning notch (1132b), so that the limiting structure (131) can be installed in the installation cavity through the positioning notch (1132b).

6. The motor (100) according to claim 5, characterized in that: The positioning notch (1132b) comprises an inner groove surface (1132b') radially opposite to the opening (1132a), and the inner groove surface (1132b') is formed as an arc surface; The limiting structure (131) has an outer wall surface (1311) opposite to the inner groove surface (1132b'), and the outer wall surface (1311) is an arc surface.

7. The motor (100) according to claim 6, characterized in that: The inner diameter d1 of the opening (1132a), the diameter d2 of the inner groove surface (1132b'), the outer diameter d3 of the core shaft (130), and the diameter d4 of the outer wall surface (1311) satisfy: d3 <d1<d4<d2。 8. The motor (100) according to claim 5, characterized in that: There are a plurality of positioning notches (1132b), and the plurality of positioning notches (1132b) are distributed at intervals along the circumference of the opening (1132a); The limiting structure (131) corresponds to the positioning notch (1132b) one by one.

9. The motor (100) according to claim 2, characterized in that: The limiting structure (131) comprises a first side surface axially facing the fixing ring (113) and a second side surface axially facing the bearing member (120). The distance t1 between the first side surface and the fixing ring (113) satisfies: t1>0; and / or, A distance t2 between the second side surface and the bearing member (120) satisfies: t2>0.

10. A fan, characterized in that: include: frame; An impeller, the impeller comprising a plurality of blades; The motor (100) according to any one of claims 1 to 9, wherein the base assembly (110) of the motor (100) is fixedly connected to the frame, and the rotor (150) of the motor (100) is fixedly connected to the impeller.

11. An electronic device, characterized in that: The fan comprising the fan according to claim 10.

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