CN215911952U

CN215911952U - Stator and rotor assembly of motor

Info

Publication number: CN215911952U
Application number: CN202121811679.4U
Authority: CN
Inventors: 曹吉峰
Original assignee: Suzhou Zhipu Intelligent Motor Co ltd
Current assignee: Suzhou Zhipu Intelligent Motor Co ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2022-02-25
Anticipated expiration: 2031-08-05

Abstract

The utility model discloses a stator and rotor assembly of a motor, which comprises a stator and a rotor, wherein the stator is formed by axially laminating a plurality of identical stator punching sheets (1), the rotor is formed by axially laminating a plurality of identical rotor punching sheets (2), the cross section of each stator punching sheet (1) is in a circular ring shape, a rotor hole (11) is formed in the center of each stator punching sheet, a plurality of wire slots (12) which are uniformly distributed in a ring shape are formed in the outer side of each rotor hole (11), and the wire slots (12) are communicated with the rotor holes (11); the cross section of the rotor punching sheet (2) is in a regular polygon shape, each regular polygon corner of the rotor punching sheet (2) is provided with a dovetail-shaped outer protrusion (21), an open magnetic steel mounting groove (22) is formed between every two adjacent outer protrusions (21), and two ends of the groove bottom of each magnetic steel mounting groove (22) are provided with concave air grooves (23). The utility model has the advantage of well considering both the heat radiation performance and the compactness of assembly inside the component.

Description

Stator and rotor assembly of motor

Technical Field

The utility model relates to the technical field of motor parts, in particular to a stator and rotor assembly of a motor.

Background

The motor mainly comprises stator and rotor, and stator, rotor generally form by the stack of multi-disc stator, rotor punching, and the punching is mostly silicon steel sheet. For the stator punching, its center is opened there is the rotor hole, and the rotor hole is surrounded by the wire casing again, and for the rotor punching, its center is opened there is the pivot hole, and the rotor punching still has the mounting groove that is used for fixed magnet steel. For example, patent publication number is CN210183203U discloses a permanent-magnet machine's stator and rotor subassembly, include the stator and locate the rotor in the stator, be equipped with the magnet steel groove on the rotor, the magnet steel groove is a closed region on the rotor punching, although it is convenient to get of magnet steel and put and fix, but because the stator of motor can generate heat when using, because heat-conduction, some can pass to on the magnet steel, in addition, the magnet steel also has electric conductivity, stator current also can produce some eddy current loss on the magnet steel, lead to generating heat, the easy heat accumulation in confined magnet steel groove, not only make the magnet steel radiating effect not very good, still can make the radiating effect of whole motor descend, especially under abominable operating mode, can lead to the motor burnout, it is more easy to break down. In order to solve the heat dissipation problem of the motor, the current practice is to increase the gap between the stator and the rotor properly, so that the assembling tightness between the stator and the rotor is low, which is contrary to the development direction of light weight and small size of the current motor. Therefore, the problem that the existing motor stator and rotor assembly cannot well compromise the compactness of heat dissipation performance and assembly internal assembly exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a stator and a rotor assembly of a motor. The LED lamp module has the advantage of being capable of well considering both the heat dissipation performance and the compactness of assembly internal assembly.

The technical scheme of the utility model is as follows: a stator and rotor assembly of a motor comprises a stator and a rotor, wherein the stator is formed by axially laminating a plurality of identical stator punching sheets, the rotor is formed by axially laminating a plurality of identical rotor punching sheets, the cross section of each stator punching sheet is in a circular ring shape, a rotor hole is formed in the center of each stator punching sheet, a plurality of wire grooves which are uniformly distributed in an annular shape are formed in the outer side of each rotor hole, and the plurality of wire grooves are communicated with the rotor holes; the cross section of the rotor punching sheet is in a regular polygon shape, each regular polygon corner of the rotor punching sheet is provided with a dovetail-shaped convex, an open magnetic steel mounting groove is formed between every two adjacent convex, and both ends of the groove bottom of each magnetic steel mounting groove are provided with concave air grooves.

Compared with the prior art, the utility model has the beneficial effects that: the stator punching sheet is provided with the wire grooves communicated with the rotor hole, and the rotor punching sheet is provided with the open type magnetic steel mounting groove to improve the heat dissipation effect in the assembly, furthermore, the magnetic steel mounting groove is formed by dovetail-shaped outwards protrusions on two adjacent regular polygon corners of the rotor punching sheet, the magnetic steel is independently clamped and mounted, heat is not easy to accumulate, meanwhile, the size of the dovetail-shaped outwards protrusions can provide reference for the design of the rotor hole in the stator punching sheet, and the magnetic steel is mounted in the relatively open groove, so that the mounting gap between the rotor and the stator can be reduced as far as possible on the premise that the rotor can rotate relative to the stator, and the final motor is lighter and smaller. In addition, the two ends of the groove bottom of the magnetic steel mounting groove are provided with the recessed air grooves, so that the magnetic steel cannot be completely attached to the magnetic steel mounting groove, the air grooves can improve the heat dissipation effect, and can also be used as magnetic wire grooves, so that the magnetic force lines of the magnetic field are more balanced, and the magnetic resistance is reduced.

In the stator and rotor assembly of the motor, the width of the magnetic steel installation groove is gradually increased from the groove opening to the groove bottom, and an included angle of 5-15 degrees is formed between extension lines of the two groove walls.

In the stator and the rotor assembly of the motor, the center of the rotor punching sheet is provided with a shaft hole, and the wall of the shaft hole is provided with a section of convex arc section.

In the stator and rotor assembly of the motor, the aperture of the shaft hole is 6.0-10.0mm, the diameter of the circle where the circular arc section is located is 0.8-1.2mm, and the distance between the circle center of the shaft hole and the circle center of the circle where the circular arc section is located is 3.5-4.0 mm.

In the stator and the rotor assembly of the motor, the distance between the bottom of the air slot and the bottom of the magnetic steel mounting slot is 0.15-0.25 mm.

In the stator and the rotor assembly of the motor, the cross section of the rotor punching sheet is in a shape of a regular octagon, the distance between a pair of opposite sides of the regular octagon is 24.4-26.4mm, and the distance between a pair of opposite corners of the regular octagon and the upper outer protrusion is 27.5-29.5 mm.

In the stator and rotor assembly of the motor, the plurality of wire slots are all in flaring structures with small inner parts and large outer parts, the inner sides of the wire slots communicated with the rotor hole are provided with communication ports with the width of 1.5-2.5mm, the bottom of the outer side of each wire slot is arc-shaped, and the diameter of a circle where the arc is located is 47.0-51.0 mm.

In the stator and rotor assembly of the motor, the outer circumference of the stator punching sheet is provided with an inwards concave marking groove, and the diameter of the marking groove is 1.5-2.5 mm.

In the stator and the rotor assembly of the motor, the number of the wire grooves is 9, and the wall thickness between two adjacent wire grooves is 3.0-5.0 mm.

In the stator and rotor assembly of the motor, the diameter of the rotor hole of the stator punching sheet is 28.0-32.0mm, and the diameter of the outer ring of the stator punching sheet is 54.0-58.0 mm.

Drawings

FIG. 1 is a schematic view of a combined structure of a stator punching sheet and a rotor punching sheet of the present invention;

FIG. 2 is a schematic structural diagram of a stator lamination;

FIG. 3 is a schematic structural view of a rotor sheet;

fig. 4 is a partial enlarged view of fig. 1 at a.

Reference numerals: 1-stator punching sheet, 2-rotor punching sheet, 11-rotor hole, 12-wire groove, 13-communication port, 14-marking groove, 21-outward protrusion, 22-magnetic steel installation groove, 23-air groove, 24-shaft hole and 25-arc segment.

Detailed Description

The utility model is further illustrated by the following figures and examples, which are not to be construed as limiting the utility model.

Example (b): a stator and rotor assembly of a motor is structurally shown in figures 1-4 and comprises a stator and a rotor, wherein the stator is formed by axially laminating a plurality of identical stator punching sheets 1, the rotor is formed by axially laminating a plurality of identical rotor punching sheets 2, the cross section of each stator punching sheet 1 is in a circular ring shape, a rotor hole 11 is formed in the center of each stator punching sheet, a plurality of wire slots 12 which are uniformly distributed in a ring shape are formed in the outer side of each rotor hole 11, and the plurality of wire slots 12 are communicated with the rotor hole 11; the cross section of the rotor punching sheet 2 is in a regular polygon shape, each regular polygon corner of the rotor punching sheet 2 is provided with a dovetail-shaped convex 21, an open magnetic steel mounting groove 22 is formed between every two adjacent convex 21, and both ends of the groove bottom of each magnetic steel mounting groove 22 are provided with concave air grooves 23.

As preferred, magnet steel mounting groove 22 becomes 10 contained angles from notch to tank bottom width crescent and between the extension line of two cell walls, and when the high-speed rotation of rotor, the setting up of this contained angle makes the magnet steel that inserts in magnet steel mounting groove 22 can not deviate from the groove, improves the stability of magnet steel installation, also is difficult for laminating mutually with the cell wall after the magnet steel installation simultaneously, can effectively improve the radiating effect.

Preferably, the center of the rotor sheet 2 is provided with a shaft hole 24, the hole wall of the shaft hole 24 is provided with a section of convex arc section 25, the arc section 25 can be used as a positioning groove for installing a rotating shaft, and the stacked rotor sheets 2 are installed on the same rotating shaft to ensure synchronous rotation with the rotating shaft.

As preferred, the aperture of shaft hole 24 is 8.0mm, the diameter of the circle that circular arc section 25 is located is 1.0mm, the centre of a circle of shaft hole 24 with the centre of a circle of circular arc section 25 place is 3.75mm apart from, sets up through reasonable size, guarantees under the normal condition of function, provides better support for the pivot.

Preferably, the distance between the bottom of the air slot 23 and the bottom of the magnetic steel mounting slot 22 is 0.20mm, so that the heat dissipation space is not too large, the compactness of the magnetic steel after assembly is affected, and the effects of conducting magnetic lines and reducing magnetic resistance can be well achieved.

Preferably, the cross section of the rotor punching sheet 2 is in a shape of a regular octagon, the distance between a pair of opposite sides of the regular octagon is 25.4mm, the distance between a pair of opposite corners of the regular octagon and the upward bulges 21 is 28.5mm, and through reasonable size setting, sufficient space is provided for the installation of the magnetic steel under the condition of ensuring normal function.

Preferably, the plurality of wire slots 12 are all flaring structures with small inner parts and large outer parts, the inner sides of the wire slots 12 communicated with the rotor hole 11 are provided with communication ports 13 with the width of 2.0mm, so that winding is facilitated, and the heat dissipation effect is improved, the outer side slot bottoms of the wire slots 12 are arc-shaped, the diameter of a circle where the arc is located is 49.0mm, the space of the wire slots 12 is large, the winding amount is larger, the recovery amount of cutting materials can be improved, and the material utilization rate is improved.

Preferably, the outer circumference of the stator punching sheet 1 is provided with an inward-concave marking groove 14, the diameter of the marking groove 14 is 2.0mm, and the marking groove 14 can be used as a marking position when the stator punching sheets 1 are stacked, so that the uniformity of the stacked stator is better.

Preferably, the number of the wire grooves 12 is 9, the wall thickness between two adjacent wire grooves 12 is 5.0mm, the diameter of a rotor hole 11 of the stator punching sheet 1 is 30.0mm, the diameter of an outer ring of the stator punching sheet 1 is 56.0mm, and through reasonable inner and outer size design, under the condition that the normal function is ensured, support is provided for design optimization of the choke part and the wire grooves 12.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned examples, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims

1. The utility model provides a stator and rotor subassembly of motor, includes stator and rotor, the stator is formed along the axial range upon range of by a plurality of the same stator punching (1), the rotor is formed along the axial range upon range of by a plurality of the same rotor punching (2), its characterized in that: the cross section of the stator punching sheet (1) is in a circular ring shape, a rotor hole (11) is formed in the center of the stator punching sheet, a plurality of wire grooves (12) are uniformly distributed in a ring shape on the outer side of the rotor hole (11), and the plurality of wire grooves (12) are communicated with the rotor hole (11); the cross section of the rotor punching sheet (2) is in a regular polygon shape, each regular polygon corner of the rotor punching sheet (2) is provided with a dovetail-shaped outer protrusion (21), an open magnetic steel mounting groove (22) is formed between every two adjacent outer protrusions (21), and two ends of the groove bottom of each magnetic steel mounting groove (22) are provided with concave air grooves (23).

2. A stator and rotor assembly for an electric machine according to claim 1, wherein: the magnetic steel mounting groove (22) gradually increases in width from the notch to the groove bottom, and an included angle of 5-15 degrees is formed between extension lines of the two groove walls.

3. A stator and rotor assembly for an electric machine according to claim 1, wherein: the center of rotor punching (2) is equipped with shaft hole (24), is equipped with one section convex circular arc section (25) on the pore wall of shaft hole (24).

4. A stator and rotor assembly for an electric machine according to claim 3, wherein: the aperture of the shaft hole (24) is 6.0-10.0mm, the diameter of the circle where the circular arc section (25) is located is 0.8-1.2mm, and the distance between the circle center of the shaft hole (24) and the circle center of the circle where the circular arc section (25) is located is 3.5-4.0 mm.

5. A stator and rotor assembly for an electric machine according to claim 1, wherein: the distance between the bottom of the air groove (23) and the bottom of the magnetic steel mounting groove (22) is 0.15-0.25 mm.

6. A stator and rotor assembly for an electric machine according to claim 1, wherein: the cross section of the rotor punching sheet (2) is in a regular octagon shape, the distance between a pair of opposite sides of the regular octagon is 24.4-26.4mm, and the distance between a pair of opposite upward bulges (21) of the regular octagon is 27.5-29.5 mm.

7. A stator and rotor assembly for an electric machine according to claim 1, wherein: the plurality of wire grooves (12) are of flaring structures with small inner parts and large outer parts, the inner sides of the wire grooves (12) communicated with the rotor hole (11) are provided with communication ports (13) with the width of 1.5-2.5mm, the bottom of the outer side of each wire groove (12) is arc-shaped, and the diameter of a circle where the arc is located is 47.0-51.0 mm.

8. A stator and rotor assembly for an electric machine according to claim 1, wherein: an inwards concave marking groove (14) is formed in the outer circumference of the stator punching sheet (1), and the diameter of the marking groove (14) is 1.5-2.5 mm.

9. A stator and rotor assembly for an electric machine according to claim 1, wherein: the number of the wire grooves (12) is 9, and the wall thickness between every two adjacent wire grooves (12) is 3.0-5.0 mm.

10. A stator and rotor assembly for an electric machine according to claim 1, wherein: the diameter of a rotor hole (11) of the stator punching sheet (1) is 28.0-32.0mm, and the diameter of an outer ring of the stator punching sheet (1) is 54.0-58.0 mm.