Motor assembly and air blowing equipment

Abstract

The utility model discloses a motor assembly and blowing equipment, and relates to the technical field of motor equipment, the motor assembly comprises a main shaft, a rotor, a bearing and a fixing member, the periphery of the main shaft is provided with a stator iron core; the rotor sleeves the periphery of the main shaft, the inner wall of the rotor is provided with a magnetic ring, and the magnetic ring is arranged around the stator iron core; the bearing is arranged between the main shaft and the rotor and comprises an outer ring, an inner ring and a rolling body, the inner ring sleeves the periphery of the main shaft, and the outer ring is matched and connected with the inner wall of the rotor; the fixing part comprises a first fixing ring and a second fixing ring, the first fixing ring is clamped to the periphery of the main shaft and used for abutting against the side, back to the stator iron core, of the fixing inner ring, and the second fixing ring is clamped to the side, back to the magnetic ring, of the inner wall of the rotor and used for abutting against the fixing outer ring. The technical scheme provided by the utility model aims to realize convenient assembly of the motor assembly and improve practicability and reliability of the motor assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor equipment technical field, especially a kind of motor assembly and blowing equipment. BACKGROUND

[0002] In related art, motor assembly can generally install bearing on main shaft, and make rotor sleeve set on the outer periphery of main shaft and connect with bearing, so that rotor can stably rotate relative to main shaft, to ensure the stable operation of motor assembly.

[0003] However, motor assembly mostly uses screw to lock and install cover plate on the end of main shaft, so that cover plate limits and fixes bearing, which leads to the need of processing and setting pile structure for screw installation on the main shaft of motor assembly, and further leads to the more complicated processing and assembling procedure of motor assembly, reducing the practicability and assembling convenience of motor assembly. SUMMARY

[0004] The main purpose of the utility model is to provide a kind of motor assembly and blowing equipment, to realize the convenient assembly of motor assembly, improve the practicability and reliability of motor assembly.

[0005] To achieve the above-mentioned purpose, the utility model provides a motor assembly, which comprises a main shaft, a rotor, a bearing and a fixing member. The outer periphery of the main shaft is provided with a stator core. The rotor is sleeved on the outer periphery of the main shaft. The inner wall of the rotor is provided with a magnetic ring, which corresponds to the stator core. The bearing is arranged between the main shaft and the rotor and is spaced apart from the stator core along the axial direction of the main shaft. The bearing comprises an outer ring, an inner ring and a rolling body rotatably arranged between the outer ring and the inner ring. The inner ring is sleeved on the outer periphery of the main shaft, and the outer ring is connected with the inner wall of the rotor. The fixing member comprises a first fixing ring and a second fixing ring. The first fixing ring is clamped on the outer periphery of the main shaft and used to abut and fix one side of the inner ring away from the stator core. The second fixing ring is clamped on the inner wall of the rotor and used to abut and fix one side of the outer ring away from the magnetic ring.

[0006] In an embodiment, the inner wall of the first fixing ring is provided with a first protruding structure, and the outer periphery of the main shaft is provided with a first limiting structure. The first protruding structure is clamped in cooperation with the first limiting structure.

[0007] In an embodiment, the first protruding structure is an internal thread, and the first limiting structure is an external thread. The first fixing ring is clamped in cooperation with the main shaft through thread connection.

[0008] In an embodiment, the outer periphery of the second fixing ring is provided with a second protruding structure, and the inner wall of the rotor is provided with a second limiting structure. The second protruding structure is clamped in cooperation with the second limiting structure.

[0009] In an embodiment, the second protruding structure is an external thread, the second limiting structure is an internal thread, and the second fixing ring is threadedly connected to the rotor.

[0010] In an embodiment, the main shaft is internally provided with a clearance hole, the first fixing ring comprises a first ring body, a second ring body and a limiting cover plate, the first ring body is connected to the outer periphery of the main shaft, the second ring body is arranged in the clearance hole and abuts against the inner wall of the clearance hole, and the first ring body and the second ring body are connected to the limiting cover plate which is adjacent to the end surface of the main shaft.

[0011] In an embodiment, the first fixing ring is provided with a first assembly slot on the side opposite to the bearing, and / or the second fixing ring is provided with a second assembly slot on the side opposite to the bearing.

[0012] In an embodiment, the outer periphery of the main shaft is provided with a limiting piece, the limiting piece is arranged between the stator core and the bearing and abuts against the inner ring of the bearing, and the first fixing ring and the limiting piece clamp and fix the inner ring of the bearing.

[0013] In an embodiment, the inner wall of the rotor is provided with a supporting boss, the supporting boss abuts against the outer ring of the bearing, and the second fixing ring and the supporting boss clamp and fix the outer ring of the bearing.

[0014] The utility model also provides a blowing equipment, the blowing equipment includes equipment body and motor assembly, the motor assembly is above described motor assembly, the motor assembly is installed in the blowing equipment.

[0015] The technical scheme of the utility model realizes the clamping of the first fixing ring on the outer periphery of the main shaft, the abutting of the first fixing ring against the inner ring of the bearing, the clamping of the second fixing ring on the inner wall of the rotor, the abutting of the second fixing ring against the outer ring of the bearing, the stable assembly of the bearing by the fixing piece, the prevention of the separation of the bearing from the main shaft and the rotor, and the stability of the overall structure of the motor assembly. The abutting of the bearing by the clamping of the first fixing ring and the second fixing ring on the main shaft and the rotor respectively realizes the more simple installation structure of the main shaft and the rotor, effectively reduces the production and processing difficulty of the motor assembly, better reduces the production cost of the motor assembly, realizes the more convenient assembly process of the motor assembly, and effectively improves the production efficiency and practicability of the motor assembly. BRIEF DESCRIPTION OF DRAWINGS

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of an embodiment of the motor assembly provided by this utility model;

[0018] Figure 2 for Figure 1 An exploded view of the structure of an embodiment of a motor assembly;

[0019] Figure 3 for Figure 1 A cross-sectional view of the structure of an embodiment of a motor assembly;

[0020] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0021] Explanation of icon numbers:

[0022] 100. Motor assembly; 10. Main shaft; 11. Stator core; 13. First limiting structure; 15. Limiting component; 17. Clearance through hole; 30. Rotor; 31. Second limiting structure; 33. Support boss; 35. Magnetic ring; 50. Bearing; 51. Outer ring; 53. Inner ring; 55. Rolling element; 70. Fixing component; 71. First fixing ring; 711. First ring body; 7111. First protrusion structure; 713. Second ring body; 715. Limiting cover plate; 7151. First assembly slot; 73. Second fixing ring; 731. Second protrusion structure; 733. Second assembly slot.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0025] It should be noted that if the embodiment of the utility model has directionality indication (such as up, down, left, right, front, back, etc.), the directionality indication is only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, if the specific posture changes, the directionality indication also changes accordingly.

[0026] In addition, if the embodiment of the utility model has the description of "first", "second" and the like, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes include "A and / or B" as an example, including A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled personnel in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the protection scope required by the utility model.

[0027] In the related art, the motor assembly can generally install a bearing on the main shaft, and make the rotor sleeve set on the outer periphery of the main shaft and connected with the bearing, so that the rotor can stably rotate relative to the main shaft, and the stable operation of the motor assembly is ensured. However, the motor assembly mostly uses screws to lock and install the cover plate on the end of the main shaft, so that the cover plate limits and fixes the bearing, which causes the need to process and set a pile structure for screw installation on the main shaft of the motor assembly, thereby causing the machining and assembly process of the motor assembly to be more complicated, and reducing the practicability and assembly convenience of the motor assembly. In view of the above problems, the utility model provides a motor assembly 100.

[0028] Please refer to Figures 1 to 4In an embodiment of the utility model, this motor assembly 100 includes main shaft 10, rotor 30, bearing 50 and fixing piece 70, the outer periphery of main shaft 10 is equipped with stator core 11;Rotor 30 is sleeved on the outer periphery of main shaft 10, and the inner wall of rotor 30 is equipped with magnetic ring 35, and magnetic ring 35 is correspondingly arranged around stator core 11;Bearing 50 is arranged between main shaft 10 and rotor 30, and is spaced apart along the axial direction of main shaft 10 with stator core 11, and bearing 50 includes outer ring 51, inner ring 53 and the rolling body 55 rotatably arranged between outer ring 51 and inner ring 53, and inner ring 53 is sleeved on the outer periphery of main shaft 10, and outer ring 51 is connected with the inner wall of rotor 30;Fixing piece 70 includes first fixed ring 71 and second fixed ring 73, first fixed ring 71 is clamped on the outer periphery of main shaft 10, and is used to abut and fix the side of inner ring 53 away from stator core 11, and second fixed ring 73 is clamped on the inner wall of rotor 30, and is used to abut and fix the side of outer ring 51 away from magnetic ring 35.

[0029] It can be understood that the motor assembly 100 can be applied to the blowing equipment such as electric fan, hair dryer, etc., the fan blade can be driven to rotate on the main shaft 10 by the rotor 30, so that the motor assembly 100 can disturb air to generate airflow for blowing, and the stable operation of the blowing equipment is realized. In the motor assembly 100, the bearing 50 can include the inner ring 53 and the outer ring 51 spaced apart, and the rolling body 55 such as ball is clamped between the inner ring 53 and the outer ring 51, so that the inner ring 53 and the outer ring 51 can be relatively rotatably arranged, and then the bearing 50 can be installed on the outer periphery of the main shaft 10 by the inner ring 53, and the rotor 30 is connected with the outer ring 51 of the bearing 50 when being sleeved on the outer periphery of the main shaft 10, so that the rotor 30 can be stably sleeved on the outer periphery of the main shaft 10 under the separation support of the bearing 50, the magnetic ring 35 of the rotor 30 is arranged opposite to the stator core 11 at this time, and the rotor 30 can be stably rotated relative to the main shaft 10 by the interaction of the magnetic ring 35 and the stator core 11, and the stable operation of the motor assembly 100 is ensured.

[0030] In the present application, by arranging the fixing member 70 in the motor assembly 100, the fixing member 70 can include a first fixing ring 71 and a second fixing ring 73, the first fixing ring 71 and the second fixing ring 73 can be connected with the main shaft 10 and the rotor 30 respectively, and then the fixing member 70 can be used to stably abut and fix the bearing 50, effectively preventing the bearing 50 from separating from the main shaft 10, and ensuring the overall structural stability of the motor assembly 100. Among them, the motor assembly 100 can be arranged with the protrusion limiting structure matched and clamped on the inner wall of the first fixing ring 71 and the outer periphery of the main shaft 10, or the clamping groove and clamping protrusion structure matched and clamped on the inner wall of the first fixing ring 71 and the outer periphery of the main shaft 10, so that the first fixing ring 71 can be stably installed on the main shaft 10 when it is sleeved on the main shaft 10, and the clamping and cooperation of the first fixing ring 71 and the main shaft 10 can stably abut and fix the side of the inner ring 53 of the bearing 50 away from the stator core 11, effectively preventing the bearing 50 from separating from the main shaft 10. Moreover, the diameter of the second fixing ring 73 can correspond to the inner diameter of the rotor 30, at this time the motor assembly 100 can be arranged with the protrusion limiting structure matched and clamped on the outer wall of the second fixing ring 73 and the inner wall of the rotor 30, or the clamping groove and clamping protrusion structure matched and clamped on the outer wall of the second fixing ring 73 and the inner wall of the rotor 30, so that the second fixing ring 73 can be more stably matched and clamped on the inner wall of the rotor 30, which is conducive to stably abutting and fixing the side of the outer ring 51 of the bearing 50 away from the magnetic ring 35 on the rotor 30 by using the second fixing ring 73, effectively preventing the bearing 50 from separating from the rotor 30.

[0031] Therefore, when the bearing 50 is sleeved on the main shaft 10 from one end of the main shaft 10, the first fixing ring 71 can be clamped and installed on the outer periphery of the main shaft 10 to abut and fix the inner ring 53 of the bearing 50, and when the rotor 30 is sleeved on the outer periphery of the main shaft 10 and connected with the bearing 50, the second fixing ring 73 can be clamped and installed on the inner wall of the rotor 30 to abut and fix the outer ring 51 of the bearing 50, realizing the overall stable assembly of the motor assembly 100 and effectively ensuring the stable operation of the motor assembly 100. The first fixing ring 71 can be clamped and installed on the main shaft 10 in cooperation, and the second fixing ring 73 can be clamped and installed on the rotor 30 in cooperation when it is correspondingly sleeved into the inner wall of the rotor 30, which is conducive to realizing a more convenient and reliable installation method of the fixing member 70 and the main shaft 10 and the rotor 30, and better improving the assembly efficiency of the motor assembly 100; at the same time, without the need to open threaded holes or arrange bolts on the main shaft 10 and the rotor 30, it is conducive to making the main shaft 10 adopt a relatively straight shaft structure, better simplifying the production and processing procedures of the main shaft 10 and the rotor 30, and without the need to operate screws to connect the main shaft 10 and the rotor 30 during construction and assembly, realizing a more convenient assembly process of the motor assembly 100, and effectively improving the practicality and structural reliability of the motor assembly 100.

[0032] The technical scheme of the utility model discloses through the utilization of the first fixed ring 71 clamping on the outer periphery of the main shaft 10, the first fixed ring 71 is in abutment with the inner ring 53 of the fixed bearing 50, and the second fixed ring 73 clamping on the inner wall of the rotor 30, the second fixed ring 73 is in abutment with the outer ring 51 of the fixed bearing 50, can realize the stable assembly of bearing 50 with fixed part 70, effectively prevent the separation of bearing 50 and main shaft 10 and rotor 30, guarantee the overall structural stability of motor assembly 100. The abutment fixing of bearing 50 is realized by the clamping installation of first fixed ring 71 and second fixed ring 73 with main shaft 10 and rotor 30 respectively, can realize the more simple installation structure setting on main shaft 10 and rotor 30, effectively reduce the production and processing difficulty of motor assembly 100, better reduce the production cost of motor assembly 100, can realize the more convenient assembly process of motor assembly 100 simultaneously, effectively improve the production efficiency and practicality of motor assembly 100.

[0033] Referring to Figure 3 And Figure 4 In an embodiment of the utility model, the inner wall of the first fixed ring 71 is provided with a first protruding structure 7111, and the outer periphery of the main shaft 10 is provided with a first limiting structure 13, and the first protruding structure 7111 is clamped in cooperation with the first limiting structure 13.

[0034] In the embodiment, the first fixed ring 71 can be provided with the first protruding structure 7111 around the inner wall, which can be a protruding point or a protruding strip structure, and a first limiting structure 13 that cooperates with the first protruding structure 7111 is arranged on the outer periphery of the main shaft 10, which can be a boss that cooperates with the first protruding structure 7111 to abut, so that when the first fixed ring 71 is sleeved on the outer periphery of the main shaft 10 and abuts against the inner ring 53 of the bearing 50, the first limiting structure 13 can abut against the side of the first protruding structure 7111 that is away from the bearing 50, thereby effectively preventing the first fixed ring 71 from being separated from the main shaft 10 by clamping in cooperation with the first limiting structure 13 and the first protruding structure 7111. Alternatively, the first limiting structure 13 can be a groove structure that accommodates and clamps the first protruding structure 7111, and at this time, the first protruding structure 7111 can have a certain elasticity, so that when the first fixed ring 71 is sleeved on the main shaft 10, the first protruding structure 7111 can be elastically deformed, and when the first fixed ring 71 abuts against the inner ring 53 of the bearing 50, the first protruding structure 7111 can be inserted into the first limiting structure 13, thereby achieving the clamping and fixing of the first fixed ring 71 and the main shaft 10 in cooperation, ensuring that the first fixed ring 71 abuts against the inner ring 53 of the bearing 50, and effectively preventing the bearing 50 from being separated from the main shaft 10.

[0035] By setting the first protruding structure 7111 on the inner wall of the first fixed ring 71 and setting the first limiting structure 13 on the outer periphery of the main shaft 10 which is matched with the first protruding structure 7111, the main shaft 10 and the first fixed ring 71 can be more conveniently produced and processed by turning and the like, which is beneficial to realize more convenient production and assembly process of the motor assembly 100 and further improve the practicability and reliability of the motor assembly 100.

[0036] In an embodiment of the present application, the first protruding structure 7111 is an internal thread, the first limiting structure 13 is an external thread, and the first fixed ring 71 is threadedly matched and clamped with the main shaft 10.

[0037] In the embodiment, the first protruding structure 7111 on the inner wall of the first fixed ring 71 is provided in the form of an internal thread, and the first limiting structure 13 on the outer periphery of the main shaft 10 is provided in the form of an external thread, which can be a thread structure that is mutually engaged, so that when the first fixed ring 71 is sleeved and installed on the main shaft 10, the first protruding structure 7111 is threadedly matched with the first limiting structure 13, so that the first fixed ring 71 can be more smoothly screwed and installed on the outer periphery of the main shaft 10, which is beneficial to better improve the assembly convenience of the first fixed ring 71 and the main shaft 10 and improve the assembly efficiency of the motor assembly 100. Meanwhile, the first fixed ring 71 and the main shaft 10 are assembled by thread matching, which can make the contact area of the first protruding structure 7111 and the first limiting structure 13 larger, which is beneficial to better improve the connection stability and reliability of the first fixed ring 71 and the main shaft 10, guarantee the stable abutting effect of the first fixed ring 71 on the bearing 50, and further improve the practicability and reliability of the motor assembly 100.

[0038] Referring to Figures 2 to 4 In an embodiment of the present application, the outer periphery of the second fixed ring 73 is provided with a second protruding structure 731, the inner wall of the rotor 30 is provided with a second limiting structure 31, and the second protruding structure 731 is matched and clamped with the second limiting structure 31.

[0039] In the embodiment, the second fixed ring 73 can be provided with a second protruding structure 731 around the outer periphery, which can be a convex point or a convex strip structure, and a second limiting structure 31 matched with the second protruding structure 731 is arranged on the inner wall of the rotor 30, which can be a boss matched with the second protruding structure 731 for abutting, so that when the second fixed ring 73 is embedded in the inner wall of the rotor 30 and abuts against the outer ring 51 of the bearing 50, the second limiting structure 31 can abut against the side of the second protruding structure 731 away from the bearing 50, thereby effectively preventing the second fixed ring 73 from being separated from the rotor 30 by the cooperation of the second limiting structure 31 and the second protruding structure 731; or the second limiting structure 31 can be a groove structure accommodating the second protruding structure 731, and at this time the second protruding structure 731 can have a certain elasticity, so that when the second fixed ring 73 is embedded in the inner wall of the rotor 30, the second protruding structure 731 can be elastically deformed, and when the second fixed ring 73 abuts against the outer ring 51 of the bearing 50, the second protruding structure 731 can be inserted into the second limiting structure 31, thereby achieving the cooperation and clamping of the second fixed ring 73 and the rotor 30, protecting the abutting effect of the second fixed ring 73 on the outer ring 51 of the bearing 50, and effectively preventing the separation of the bearing 50 and the rotor 30.

[0040] By arranging the second protruding structure 731 on the outer wall of the second fixed ring 73 and the second limiting structure 31 matched with the second protruding structure 731 on the inner wall of the rotor 30, the rotor 30 and the second fixed ring 73 can be more conveniently produced and processed by turning and other methods, which is conducive to realizing more convenient production and assembly process of the motor assembly 100 and further improving the practicability and reliability of the motor assembly 100.

[0041] In an embodiment of the utility model, the second protruding structure 731 is an external thread, the second limiting structure 31 is an internal thread, and the second fixed ring 73 is clamped with the rotor 30 in a threaded manner.

[0042] In the embodiment, the second protruding structure 731 of the inner wall of the second fixed ring 73 is provided with an external thread structure, and the second limiting structure 31 of the inner wall of the rotor 30 is provided with an internal thread structure, the external thread and the internal thread can be intermeshing thread structures, and then when the second fixed ring 73 is embedded and installed on the inner wall of the rotor 30, the second protruding structure 731 and the second limiting structure 31 are threadedly matched, so that the second fixed ring 73 can be more smoothly screwed and installed on the inner wall of the rotor 30, which is beneficial to better improve the assembly convenience of the second fixed ring 73 and the rotor 30 and improve the assembly efficiency of the motor assembly 100. The second fixed ring 73 and the rotor 30 are threadedly matched, so that the contact area of the second protruding structure 731 and the second limiting structure 31 is larger, which is beneficial to better improve the connection stability and reliability of the second fixed ring 73 and the rotor 30, guarantee the stable abutting effect of the second fixed ring 73 on the bearing 50, and further improve the practicability and reliability of the motor assembly 100.

[0043] Referring to Figure 2 and Figure 3 In an embodiment of the utility model, the main shaft 10 is internally provided with an avoiding through hole 17, the first fixed ring 71 includes a first ring body 711, a second ring body 713 and a limiting cover plate 715, the first ring body 711 is clamped on the outer periphery of the main shaft 10, the second ring body 713 is arranged in the avoiding through hole 17 and abuts against the inner wall of the avoiding through hole 17, and the limiting cover plate 715 is adjacent to the end face of the main shaft 10, and the first ring body 711 and the second ring body 713 are connected to the limiting cover plate 715.

[0044] In the embodiment, the main shaft 10 can adopt a hollow shaft structure provided with the avoiding through hole 17, so that the motor assembly 100 can be more conveniently installed with other components in the blowing equipment, and the practicability and reliability of the motor assembly 100 are better improved. At this time, the first fixing ring 71 can include the first ring body 711, the second ring body 713 and the limiting cover plate 715. The first ring body 711 and the second ring body 713 are connected by the limiting cover plate 715, so that the first fixing ring 71 is formed in a sleeve ring structure similar to a U-shaped cross section. When the first fixing ring 71 is sleeved and installed on the main shaft 10, the first ring body 711 is sleeved on the outer periphery of the main shaft 10, the inner wall of the first ring body 711 is clamped and connected with the outer periphery of the main shaft 10, the second ring body 713 is inserted into the avoiding through hole 17, and the surface of the second ring body 713 facing the first ring body 711 abuts against the inner wall of the avoiding through hole 17. Therefore, the first fixing ring 71 is clamped and fixed on one end of the main shaft 10 by the first ring body 711 and the second ring body 713, which is beneficial to better provide the connection stability and reliability of the first fixing ring 71 and the main shaft 10. Under the abutting action of the second ring body 713 against the inner wall of the avoiding through hole 17, the second ring body 713 can support the main shaft 10, which is beneficial to avoid the deformation of the main shaft 10 caused by the excessive sleeving force of the first ring body 711 on the main shaft 10. Therefore, the first fixing ring 71 can be more stably connected and installed on the main shaft 10, and the overall structural stability and reliability of the motor assembly 100 are better improved.

[0045] Referring to Figure 1 and Figure 2 In an embodiment of the utility model, first fixing ring 71 opposite one side of bearing 50 is equipped with first assembly slot 7151. And / or, second fixing ring 73 opposite one side of bearing 50 is equipped with second assembly slot 733.

[0046] In the embodiment, the first assembly slot 7151 is arranged on the side of the first fixed ring 71 away from the bearing 50, which can be a groove structure corresponding to a screwdriver, a wrench or a special assembly tool, so that when the first fixed ring 71 is installed on the outer periphery of the main shaft 10, the tool can be inserted into the first assembly slot 7151 to drive the first fixed ring 71 to be installed on the outer periphery of the main shaft 10, or the tool can be inserted into the first assembly slot 7151 to drive the first fixed ring 71 to be removed from the outer periphery of the main shaft 10, which facilitates the disassembly of the first fixed ring 71 on the outside of the motor assembly 100, and further improves the disassembly convenience and reliability of the motor assembly 100. In addition, when the first fixed ring 71 is assembled with the main shaft 10 in a threaded fitting mode, the first assembly slot 7151 is matched and disassembled with the assembly tool, so that the first fixed ring 71 can be more conveniently screwed into the outer periphery of the main shaft 10, the assembly mode of the first fixed ring 71 is more convenient, and the practicality and reliability of the motor assembly 100 are further improved.

[0047] Similarly, the second assembly slot 733 is arranged on the side of the second fixed ring 73 away from the bearing 50, which can be a groove structure corresponding to a screwdriver, a wrench or a special assembly tool, so that when the second fixed ring 73 is installed on the inner wall of the rotor 30, the tool can be inserted into the second assembly slot 733 to drive the second fixed ring 73 to be installed on the inner wall of the rotor 30, or the tool can be inserted into the second assembly slot 733 to drive the second fixed ring 73 to be removed from the inner wall of the rotor 30, which facilitates the disassembly of the second fixed ring 73 on the outside of the motor assembly 100, and further improves the disassembly convenience and reliability of the motor assembly 100. In addition, when the second fixed ring 73 is assembled with the rotor 30 in a threaded fitting mode, the second assembly slot 733 is matched and disassembled with the assembly tool, so that the second fixed ring 73 can be more conveniently screwed into the inner wall of the rotor 30, the assembly mode of the second fixed ring 73 is more convenient, and the practicality and reliability of the motor assembly 100 are further improved.

[0048] Referring to Figure 3 and Figure 4 In an embodiment of the utility model, the outer periphery of the main shaft 10 is provided with a limiting piece 15, the limiting piece 15 is arranged between the stator core 11 and the bearing 50, and abuts against the inner ring 53 of the bearing 50, the first fixed ring 71 and the limiting piece 15 clamp and fix the inner ring 53 of the bearing 50.

[0049] In the embodiment, the limiting member 15 can be a boss arranged on the outer periphery of the main shaft 10, or can be a limiting sleeve ring sleeved on the outer periphery of the main shaft 10, etc. The limiting member 15 can be arranged between the bearing 50 and the stator core 11, and the limiting member 15 can be used to separate the stator core 11 and the bearing 50, so as to ensure the stable operation of the motor assembly 100. At this time, the limiting member 15 can abut against one side of the inner ring 53 of the bearing 50, and when the first fixing ring 71 is sleeved and installed on the outer periphery of the main shaft 10 from one end of the main shaft 10, the first fixing ring 71 and the limiting member 15 can abut against opposite sides of the inner ring 53 of the bearing 50, respectively. Then, the limiting member 15 and the first fixing ring 71 can be used to clamp and fix the inner ring 53 of the bearing 50 on the outer periphery of the main shaft 10, so as to better prevent the bearing 50 from being separated from the main shaft 10, and further improve the overall structural stability and reliability of the motor assembly 100.

[0050] Referring to Figure 3 and Figure 4 In an embodiment of the utility model, the inner wall of the rotor 30 is provided with a supporting boss 33, the supporting boss 33 abuts against the outer ring 51 of the bearing 50, and the second fixing ring 73 and the supporting boss 33 clamp and fix the outer ring 51 of the bearing 50.

[0051] In the embodiment, the magnetic member can be arranged in the rotor 30 corresponding to the position of the stator core 11, and the magnetic member can be a magnet or a power coil, etc. The magnetic member can drive the rotor 30 to rotate relative to the stator under the mutual magnetic field action of the magnetic member and the stator core 11. The supporting boss 33 can be arranged on the inner wall of the rotor 30, and the supporting boss 33 can be a structure arranged on the inner wall of the rotor 30 in a protruding manner, or can be a convex ring structure connected and installed on the inner wall of the rotor 30, etc. The supporting boss 33 can be used to separate the magnetic member and the bearing 50, so as to ensure the stable operation of the motor assembly 100. At this time, the supporting boss 33 can abut against one side of the outer ring 51 of the bearing 50, and then the second fixing ring 73 can be installed and connected on the inner wall of the rotor 30 from one end of the rotor 30. The second fixing ring 73 and the supporting boss 33 can abut against opposite sides of the outer ring 51 of the bearing 50, respectively. The second fixing ring 73 and the supporting boss 33 can clamp and fix the outer ring 51 of the bearing 50, so that the bearing 50 can be stably installed on the inner wall of the rotor 30, the bearing 50 can be effectively prevented from being separated from the rotor 30, and the overall structural stability and reliability of the motor assembly 100 are further improved.

[0052] The utility model also proposes a blowing equipment, this blowing equipment includes equipment ontology and motor assembly 100, the specific structure of this motor assembly 100 refers to the above embodiment, because this blowing equipment has adopted all the technical schemes of the above all embodiments, therefore at least has all the beneficial effects brought by the technical scheme of the above embodiment, here will not repeat again.

[0053] The above merely illustrates the exemplary embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields under the technical concept of the present application and by using the content of the present application specification and drawings are included in the patent protection scope of the present application.

Claims

1. An electric machine assembly, characterized by The utility model relates to a hair dryer, including: a main shaft, the outer periphery of the main shaft is provided with a stator core; a rotor, the rotor is sleeved on the outer periphery of the main shaft, the inner wall of the rotor is provided with a magnetic ring, the magnetic ring is correspondingly arranged around the stator core; a bearing, the bearing is arranged between the main shaft and the rotor and is spaced apart from the stator core along the axial direction of the main shaft, the bearing comprises an outer ring, an inner ring and rolling elements rotatably arranged between the outer ring and the inner ring, the inner ring is sleeved on the outer periphery of the main shaft, and the outer ring is connected with the inner wall of the rotor in a matched mode; a fixing part, the fixing part comprises a first fixing ring and a second fixing ring, the first fixing ring is clamped on the outer periphery of the main shaft and is used to abut and fix one side of the inner ring away from the stator core, and the second fixing ring is clamped on the inner wall of the rotor and is used to abut and fix one side of the outer ring away from the magnetic ring.

2. The electric machine assembly of claim 1, wherein, The inner wall of the first fixing ring is provided with a first protruding structure, the outer periphery of the main shaft is provided with a first limiting structure, and the first protruding structure is clamped in a matched mode with the first limiting structure.

3. The motor assembly of claim 2, wherein, The first protruding structure is an internal thread, the first limiting structure is an external thread, and the first fixing ring is clamped in a threaded matched mode with the main shaft.

4. The motor assembly of claim 1, wherein, The outer periphery of the second fixing ring is provided with a second protruding structure, the inner wall of the rotor is provided with a second limiting structure, and the second protruding structure is clamped in a matched mode with the second limiting structure.

5. The motor assembly of claim 4, wherein, The second protruding structure is an external thread, the second limiting structure is an internal thread, and the second fixing ring is clamped in a threaded matched mode with the rotor.

6. The motor assembly of claim 1, wherein, The main shaft is provided with a avoiding through hole, and the first fixing ring comprises: a first ring body, the first ring body is clamped on the outer periphery of the main shaft; a second ring body, the second ring body is arranged in the avoiding through hole and abuts against the inner wall of the avoiding through hole; a limiting cover plate, the limiting cover plate is adjacent to the end face of the main shaft, and the first ring body and the second ring body are connected to the limiting cover plate.

7. The motor assembly of claim 1, wherein, One side of the first fixing ring away from the bearing is provided with a first assembly slot. And / or, one side of the second fixing ring away from the bearing is provided with a second assembly slot.

8. The electric machine assembly of any one of claims 1 to 7, wherein, The outer periphery of the main shaft is provided with a limiting piece, the limiting piece is arranged between the stator core and the bearing and abuts against the inner ring of the bearing in a limiting mode, and the first fixing ring and the limiting piece clamp and fix the inner ring of the bearing.

9. The motor assembly of any one of claims 1 to 7, wherein, The inner wall of the rotor is provided with a supporting boss, the supporting boss abuts against the outer ring of the bearing in a limiting mode, and the second fixing ring and the supporting boss clamp and fix the outer ring of the bearing.

10. A blow-off apparatus characterized by comprising: The hair dryer comprises a device body and a motor assembly, the motor assembly is the motor assembly in any one of claims 1-9, and the motor assembly is installed on the hair dryer.

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