CN218161952U

CN218161952U - Motor rotor assembly, motor assembly and fan

Info

Publication number: CN218161952U
Application number: CN202222465625.8U
Authority: CN
Inventors: 不公告发明人
Original assignee: Chongqing Diyakang Electronic Technology Co ltd
Current assignee: Chongqing Diyakang Electronic Technology Co ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2022-12-27
Anticipated expiration: 2032-09-16

Abstract

The application provides a motor rotor subassembly, motor assembly and fan, relate to the electrical products field, motor rotor subassembly includes rotor core, magnet steel and elasticity fastener, rotor core is provided with assembly portion, assembly portion has first location wall and the second location wall of arranging in rotor core's week, the magnet steel is located between first location wall and the second location wall, the elasticity fastener is connected in rotor core and magnet steel simultaneously, so that the magnet steel butt is in first location wall or second location wall. The motor rotor assembly is simple and reasonable in structure, few in assembling steps, and capable of improving assembling efficiency and reducing cost.

Description

Motor rotor assembly, motor assembly and fan

Technical Field

The utility model relates to an electrical product field particularly, relates to a motor rotor subassembly, motor assembly and fan.

Background

When the motor is assembled, the magnetic steel and the rotor core are assembled together, and the magnetic steel and the rotor core are in clearance fit due to manufacturability. If other measures are not added in clearance fit, the magnetic steel and the rotor core are easy to fall off. In the prior art, a rotor end plate is added on one side of the magnetic steel, which is far away from the rotor core, and the rotor end plate is riveted on the rotor core by rivets, so that the magnetic steel is clamped by the rotor end plate and the rotor core, and the magnetic steel is prevented from falling off axially.

The inventor researches and discovers that the assembly structure of the magnetic steel and the rotor core in the prior art has the following defects:

the structure is complicated, the process is complicated, the assembly efficiency is low, and the cost is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric motor rotor subassembly, motor assembly and fan, it can simplify the structure, simplifies assembly process, improves assembly efficiency, reduce cost.

The embodiment of the utility model is realized like this:

in a first aspect, the present invention provides an electric motor rotor assembly, including:

rotor core, magnet steel and elasticity fastener, rotor core is provided with assembly portion, assembly portion has first location wall and the second location wall of arranging in rotor core's week, the magnet steel is located between first location wall and the second location wall, the elasticity fastener connect simultaneously in rotor core with the magnet steel, so that the magnet steel butt in first location wall or second location wall.

In an optional embodiment, the rotor core is provided with a plurality of positioning blocks arranged in the circumferential direction, the first positioning wall and the second positioning wall are respectively located on the adjacent positioning blocks and are arranged oppositely, and the elastic clamping piece is clamped with the positioning blocks.

In an optional embodiment, the plurality of positioning blocks include first positioning blocks and second positioning blocks alternately arranged in the circumferential direction of the rotor core, two side surfaces of the first positioning blocks in the circumferential direction of the rotor core are both first positioning walls, two side surfaces of the second positioning blocks in the circumferential direction of the rotor core are both second positioning walls, the elastic clamping piece is clamped with the first positioning blocks, and the magnetic steel is clamped between the elastic clamping piece and the second positioning blocks.

In an optional embodiment, each first positioning wall is provided with a clamping groove, and the elastic clamping piece is clamped with the clamping groove.

In optional embodiment, the elasticity fastener includes the linking arm and all two joint arms of being connected with the linking arm, the locating piece by the centre gripping in between two joint arms, two joint arms respectively with two draw-in groove joints, and every joint arm and the magnet steel butt that corresponds.

In an alternative embodiment, the elastic clamping piece is formed by bending a metal rod.

In an optional embodiment, each clamping arm is provided with a convex bending section, and the convex bending section is abutted to the corresponding magnetic steel.

In an optional embodiment, an anti-dropping convex part is arranged on the first positioning wall or the second positioning wall, and the anti-dropping convex part can be abutted to the magnetic steel to limit the magnetic steel to be separated from the rotor core from the radial outer edge of the rotor core.

In a second aspect, the present invention provides a motor assembly, the motor assembly includes:

an electric machine rotor assembly as claimed in any one of the preceding embodiments.

In a third aspect, the present invention provides a fan, comprising:

the motor assembly of the previous embodiment.

The embodiment of the utility model provides a beneficial effect is:

to sum up, the motor rotor subassembly that this embodiment provided when carrying out magnet steel and rotor core assembly, will assemble the elasticity fastener on rotor core earlier, then with the magnet steel joint in assembly portion again, utilize the elasticity fastener with the magnet steel butt on rotor core, under the spring action of elasticity fastener, the magnet steel can the butt all the time on rotor core to avoid the magnet steel to drop from the pivot iron core. In the prior art, the magnetic steel needs to be positioned on the rotor core, then the rotor end plate cover is arranged on one side of the magnetic steel, and then rivet riveting is carried out, so that at least three assembling steps are needed. In the embodiment of the application, the elastic clamping piece is assembled on the rotor core, then the magnetic steel is assembled, only two assembling steps are needed, the process is simplified, the time is shortened, the assembling efficiency is improved, and the manufacturing cost is reduced. And because the elasticity of the elastic clamping piece is adjustable, the magnetic steel can be conveniently detached from the rotor core, and the operations such as maintenance and the like are convenient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of an assembly structure of a motor rotor assembly according to an embodiment of the present invention;

fig. 2 is an exploded view of a rotor assembly of an electric motor according to an embodiment of the present invention;

fig. 3 is a schematic view of a matching structure of the rotor core and the elastic fastener according to the embodiment of the present invention;

fig. 4 is a schematic structural diagram of a rotor core according to an embodiment of the present invention;

fig. 5 is a schematic structural view of the elastic clip according to the embodiment of the present invention.

Icon:

100-rotor core; 110-a mounting portion; 120-a first positioning block; 121-a first positioning wall; 122-a card slot; 130-a second locating block; 131-a second locating wall; 140-a central body; 150-anti-slip convex part; 200-magnetic steel; 300-elastic fastener; 310-a connecting arm; 320-a snap arm; 321-bending section.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

At present, when magnet steel 200 and rotor core 100 of motor were assembled, in order to guarantee that magnet steel 200 is difficult for droing from rotor core 100, need be at magnet steel 200 and keep away from a rotor end plate of rotor core 100's one side installation, and utilize the rivet to fix the rotor end plate on rotor core 100, through rotor end plate and rotor core 100 cooperation centre gripping magnet steel 200. The assembly process comprises the following steps: the steps of installing the magnetic steel 200, installing the rotor end plate and riveting the rivet at least need three assembling steps, the assembling steps are complicated, the consumed time is long, the efficiency is low, and the manufacturing cost is increased.

In view of this, designers provide a motor rotor assembly that can reduce assembly steps, shorten assembly time, and improve assembly efficiency.

Referring to fig. 1 to 5, in the embodiment, the motor rotor assembly includes a rotor core 100, a magnetic steel 200 and an elastic clip 300, the rotor core 100 is provided with an assembling portion 110, the assembling portion 110 has a first positioning wall 121 and a second positioning wall 131 arranged in a circumferential direction of the rotor core 100, the magnetic steel 200 is disposed between the first positioning wall 121 and the second positioning wall 131, and the elastic clip 300 is connected to the rotor core 100 and the magnetic steel 200 at the same time, so that the magnetic steel 200 abuts against the first positioning wall 121 or the second positioning wall 131.

The assembly process of the rotor assembly of the motor provided by the embodiment comprises the following steps of:

assemble elasticity fastener 300 on rotor core 100 earlier, then with magnet steel 200 joint in assembly portion 110, utilize elasticity fastener 300 with magnet steel 200 butt on rotor core 100, under the spring action of elasticity fastener 300, magnet steel 200 can butt all the time on rotor core 100 to avoid magnet steel 200 to drop from the pivot iron core. Compared with the prior art, at least three assembling steps are needed, in the embodiment of the application, the elastic clamping piece 300 is assembled on the rotor core 100, then the magnetic steel 200 is assembled, only two assembling steps are needed, the process is simplified, the time is shortened, the assembling efficiency is improved, and the manufacturing cost is reduced. Moreover, the elasticity of the elastic clamping piece 300 is adjustable, so that the magnetic steel 200 can be conveniently detached from the rotor core 100, and the operations such as maintenance and repair are convenient.

Referring to fig. 4, in the present embodiment, optionally, the rotor core 100 includes a central body 140, a plurality of first positioning blocks 120 and a plurality of second positioning blocks 130, wherein the number of the first positioning blocks 120 and the number of the second positioning blocks 130 may be equal, for example, the number of the first positioning blocks 120 and the number of the second positioning blocks 130 are eight. The plurality of first positioning blocks 120 and the plurality of second positioning blocks 130 are connected to the central body 140 and are alternately arranged at intervals in the circumferential direction of the central body 140, that is, one second positioning block 130 is arranged between any two first positioning blocks 120 in the circumferential direction of the central body 140, or one first positioning block 120 is arranged between any two adjacent second positioning blocks 130.

It should be noted that the central body 140, the first positioning block 120 and the second positioning block 130 may be an integrated structure.

Meanwhile, both sides of the first positioning block 120 in the circumferential direction of the central body 140 are first positioning walls 121, both sides of the second positioning block 130 in the circumferential direction of the central body 140 are second positioning walls 131, the first positioning walls 121 are opposite to and spaced from the second positioning walls 131, the first positioning walls 121, the second positioning walls 131 and a space formed therebetween form an assembly portion 110, and the magnetic steel 200 may be clamped between the first positioning walls 121 and the second positioning walls 131 to complete assembly.

Further, all be provided with anticreep convex part 150 on every first location wall 121 and the second location wall 131, anticreep convex part 150 is the bar arch, and be located one side that central body 140 was kept away from to first locating piece 120 or second locating piece 130, magnet steel 200 joint back between first location wall 121 and second location wall 131, magnet steel 200's the outside can with anticreep convex part 150 butt, thereby avoid magnet steel 200 to deviate from assembly portion 110 from the direction of keeping away from central body 140, stability and security are improved.

Further, each first positioning wall 121 is provided with a clamping groove 122, and the clamping groove 122 is used for positioning the elastic clip 300. Specifically, the locking groove 122 is a through groove having a bar shape and extends in the axial direction of the central body 140, and the cross-sectional profile of the locking groove 122 is an arc shape, for example, the cross-sectional profile of the locking groove 122 is a semicircle.

Referring to fig. 3 and fig. 5, in this embodiment, optionally, the elastic clip 300 includes a connecting arm 310 and two clipping arms 320 both connected to the connecting arm 310, the elastic clip 300 is installed on the first positioning block 120, and the two clipping arms 320 are respectively clipped to two clipping slots 122 on the same first positioning block 120, the clipping slots 122 can limit the position of the elastic clip 300, so that the positions of the elastic clip 300 and the rotor core 100 are relatively fixed, and the stability of the overall structure is improved. Furthermore, each clamping arm 320 is provided with a bending section 321, the bending section 321 protrudes towards the second positioning wall 131, and the bending section 321 can abut against the magnetic steel 200. After the elastic clamping piece 300 is inserted into the first positioning block 120, the two clamping arms 320 of the elastic clamping piece 300 can be respectively abutted to the magnetic steels 200 at the two adjacent assembling parts 110, that is, the two adjacent magnetic steels 200 can be assembled simultaneously through one elastic clamping piece 300, so that the number of parts is reduced, and the cost is reduced.

Optionally, the elastic clamping piece 300 is formed by bending a metal rod, and the elastic clamping piece 300 is of an integrated structure, so that the elastic clamping piece is convenient to process and manufacture, high in strength and not easy to damage. For example, the elastic clip 300 is made of spring steel material, and the spring steel is hardened by heat treatment and cold drawing, so that the strength, toughness and plasticity are improved, and the use is more reliable.

The motor rotor subassembly that this embodiment provided can fix a position eight magnet steel 200, and the assembly simple operation of magnet steel 200 and rotor core 100, and is efficient, low in manufacturing cost.

The embodiment also provides a motor assembly, the motor assembly comprises the motor rotor assembly, and the assembly efficiency of the motor assembly is high.

The embodiment also provides a fan, the fan comprises the motor assembly, and the fan is high in assembly efficiency.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric machine rotor assembly, comprising:

rotor core (100), magnet steel (200) and elasticity fastener (300), rotor core (100) are provided with assembly portion (110), assembly portion (110) have first location wall (121) and second location wall (131) of arranging in the circumference of rotor core (100), magnet steel (200) are located between first location wall (121) and second location wall (131), elasticity fastener (300) connect simultaneously in rotor core (100) with magnet steel (200), so that magnet steel (200) butt in first location wall (121) or second location wall (131).

2. The electric machine rotor assembly of claim 1, wherein:

rotor core (100) have a plurality of locating pieces of arranging in its circumference, first location wall (121) with second location wall (131) are located adjacently respectively on the locating piece and set up relatively, elasticity fastener (300) with the locating piece joint.

3. The electric machine rotor assembly of claim 2, wherein:

the positioning blocks comprise first positioning blocks (120) and second positioning blocks (130) which are alternately arranged in the circumferential direction of the rotor core (100), two side faces of the first positioning blocks (120) in the circumferential direction of the rotor core (100) are both first positioning walls (121), two side faces of the second positioning blocks (130) in the circumferential direction of the rotor core (100) are both second positioning walls (131), the elastic clamping piece (300) is clamped with the first positioning blocks (120), and the magnetic steel (200) is clamped between the elastic clamping piece (300) and the second positioning blocks (130).

4. The electric machine rotor assembly of claim 2, wherein:

each first positioning wall (121) is provided with a clamping groove (122), and the elastic clamping piece (300) is clamped with the clamping groove (122).

5. The electric machine rotor assembly of claim 4, wherein:

elasticity fastener (300) include linking arm (310) and two joint arms (320) all be connected with linking arm (310), the locating piece by the centre gripping in between two joint arms (320), two joint arms (320) respectively with two draw-in grooves (122) joint, and every joint arm (320) and magnet steel (200) butt that corresponds.

6. The electric machine rotor assembly of claim 5 wherein:

the elastic clamping piece (300) is formed by bending a metal rod.

7. The electric machine rotor assembly of claim 5, wherein:

each clamping arm (320) is provided with a convex bending section (321), and the convex bending section is abutted to the corresponding magnetic steel (200).

8. The electric machine rotor assembly of claim 1 wherein:

first location wall (121) or be provided with anticreep convex part (150) on second location wall (131), anticreep convex part (150) can with magnet steel (200) butt, in order to restrict magnet steel (200) are followed the radial outward flange of rotor core (100) breaks away from rotor core (100).

9. An electric motor assembly, comprising:

an electric machine rotor assembly as claimed in any one of claims 1 to 8.

10. A fan, characterized in that the fan comprises:

the motor assembly of claim 9.