Motor

Abstract

The utility model relates to the technical field of motors, and provides a motor which comprises a stator assembly, a rotor assembly, a circuit board and a bearing sleeve. The stator assembly comprises a stator core and a coil; the rotor assembly comprises a rotating shaft, a magnetic strip holder and a plurality of magnetic strips. A magnetic strip retainer is mounted at the top end of the rotating shaft; the plurality of magnetic strips are uniformly arranged on the inner circumference of the magnetic strip holder; a plurality of groups of convex hull structures protruding towards the inner side are arranged in the circumferential direction of the magnetic strip retainer; and each magnetic strip is arranged between each group of convex hull structures. According to the utility model, the split magnetic strip is ensured not to move in the installation process without adding extra parts, and the cost is reduced.

Description

Technical Field

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

[0002] In the motor structure, it is necessary to fix multiple magnetic strips on the inner circumference of the rotor magnet holder.

[0003] The current motor structure is to fix each magnetic strip by setting a magnetic strip fixing component, and then remove the magnetic strip fixing component after installing the magnetic strip. This increases the number of parts in the motor, thereby increasing the cost, and also increases the time and process of motor assembly, which reduces the efficiency of motor assembly. Utility Model Content

[0004] The utility model mainly solves the technical problem that the current motor structure fixes each magnetic strip by setting a magnetic strip fixing component, which increases components and costs, and increases the time and process of motor assembly. A motor is proposed that can ensure that the split magnetic strips do not move during the installation process without adding additional components, thereby reducing costs.

[0005] The utility model provides a motor, comprising: a stator assembly, a rotor assembly, a circuit board and a bearing sleeve;

[0006] The stator assembly includes a stator core and a coil;

[0007] The rotor assembly includes a rotating shaft, a magnetic strip retainer and a plurality of magnetic strips;

[0008] A magnetic strip retainer is installed at the top end of the rotating shaft;

[0009] A plurality of magnetic strips are evenly arranged on the inner periphery of the magnetic strip retainer;

[0010] The magnetic strip retainer is provided with a plurality of groups of convex hull structures protruding inwardly in the circumferential direction; each magnetic strip is arranged between each group of convex hull structures.

[0011] Preferably, each group of convex hull structures has protrusions arranged in pairs.

[0012] Preferably, the protrusion is formed by stamping from the outside to the inside on the magnetic strip retainer.

[0013] Preferably, the distance between the upper protrusion and the lower protrusion in the convex hull structure is greater than 1 / 2 of the length of the magnetic strip.

[0014] Preferably, the distance between adjacent convex hull structures is less than 1 / 2 of the width of the magnetic stripe.

[0015] Preferably, a first bearing is arranged on the inner periphery of the top end of the bearing sleeve, and a second bearing is arranged on the inner periphery of the bottom end of the bearing sleeve.

[0016] The utility model provides a motor, which punches multiple groups of convex hull structures with equal spacing on the outer periphery of the magnetic strip retainer, and the magnetic strip is inserted into the corresponding convex hull structure during assembly, so as to keep the magnetic strip from moving before the glue hardens; it can reduce the number of additional components used to fix the magnetic strip, and can also fix the magnetic strip so that it does not shift during the assembly process; when assembling the motor, one assembly station is reduced, the product defect rate is reduced, and the motor assembly efficiency is improved. The utility model can ensure that the split magnetic strip does not move during the installation process without adding additional components, thereby reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the motor provided by the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the motor provided by the utility model Figure 1 (Hidden magnetic strip holder);

[0019] Figure 3 This is a schematic diagram of the internal structure of the motor provided by the utility model Figure 2 (Hide the circuit board);

[0020] Figure 4 This is an axial cross-sectional view of the motor provided by the utility model;

[0021] Figure 5 It is a structural schematic diagram of the magnetic strip retainer provided by the utility model.

[0022] Figure numerals: 1, magnetic strip retainer; 2, circuit board; 3, stator core; 4, coil; 5, rotating shaft; 6, magnetic strip; 7, bearing sleeve; 8, convex hull structure; 9, first bearing; 10, second bearing. DETAILED DESCRIPTION

[0023] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the sake of ease of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all of the contents.

[0024] like Figure 1-4 As shown, the motor provided by the embodiment of the utility model includes: a stator assembly, a rotor assembly, a circuit board 2 and a bearing sleeve 7.

[0025] The stator assembly includes a stator core 3 and a coil 4. The stator core 3 has a plurality of radially distributed coil winding parts, and the coil 4 is wound on the coil winding parts. The bearing sleeve 7 is arranged inside the stator core 3, and a first bearing 9 is arranged on the inner periphery of the top end of the bearing sleeve 7, and a second bearing 10 is arranged on the inner periphery of the bottom end of the bearing sleeve 7.

[0026] The rotor assembly comprises a rotating shaft 5, a magnetic stripe holder 1 and a plurality of magnetic stripes 6. The magnetic stripe holder 1 is installed at the top of the rotating shaft 5; the rotating shaft 5 rotates to drive the magnetic stripe holder 1 and the magnetic stripes 6 to rotate.

[0027] A plurality of magnetic strips 6 are evenly arranged on the inner periphery of the magnetic strip holder 1; Figure 5 As shown, the magnetic strip retainer 1 is provided with a plurality of groups of convex hull structures 8 protruding inwardly in the circumferential direction; Figure 5 The middle circle is a group of convex hull structures 8. Each magnetic strip 6 is arranged between each group of convex hull structures 8.

[0028] Specifically, each group of convex hull structures 8 has protrusions arranged in pairs. The protrusions are formed by punching from the outside to the inside on the magnetic stripe holder 1. The utility model punches multiple groups of convex hull structures 8 with equal spacing on the outer periphery of the magnetic stripe holder 1, and the magnetic stripe 6 is inserted into the corresponding convex hull structures 8 during assembly, so that the magnetic stripe 6 will not move before the glue hardens; it can reduce the number of additional components used to fix the magnetic stripe 6, and can also fix the magnetic stripe 6 so that it does not shift during the assembly process; when assembling the motor, one assembly station will be reduced, reducing the product defect rate.

[0029] In addition, the distance between the upper protrusion and the lower protrusion in the convex hull structure 8 is greater than 1 / 2 of the length of the magnetic strip 6, ensuring the stability of the fixed magnetic strip 6. The distance between adjacent convex hull structures 8 is less than 1 / 2 of the width of the magnetic strip 6, which can increase the arrangement density of the magnetic strip 6.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that modifying the technical solutions recorded in the aforementioned embodiments, or replacing part or all of the technical features therein by equivalents, does not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A motor, comprising: A stator assembly, a rotor assembly, a circuit board (2) and a bearing sleeve (7); The stator assembly comprises a stator core (3) and a coil (4); Features: The rotor assembly comprises a rotating shaft (5), a magnetic strip retainer (1) and a plurality of magnetic strips (6); A magnetic strip retainer (1) is installed at the top end of the rotating shaft (5); A plurality of magnetic strips (6) are evenly arranged on the inner periphery of the magnetic strip retainer (1); The magnetic strip retainer (1) is provided with a plurality of groups of convex hull structures (8) protruding inwardly in the circumferential direction; each magnetic strip (6) is arranged between each group of convex hull structures (8).

2. The motor according to claim 1, characterized in that Each group of convex hull structures (8) has convexities arranged in pairs.

3. The motor according to claim 2, characterized in that The protrusion is formed by punching from the outside to the inside on the magnetic strip retainer (1).

4. The motor according to claim 1 or 2, characterized in that: The distance between the upper protrusion and the lower protrusion in the convex hull structure (8) is greater than 1 / 2 of the length of the magnetic strip (6).

5. The motor according to claim 1 or 2, characterized in that: The distance between adjacent convex hull structures (8) is less than 1 / 2 of the width of the magnetic stripe (6).

6. The motor according to claim 1, characterized in that A first bearing (9) is arranged on the inner periphery of the top end of the bearing sleeve (7), and a second bearing (10) is arranged on the inner periphery of the bottom end of the bearing sleeve (7).

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