CN215897405U

CN215897405U - Rotor end plate and permanent magnet motor adopting same

Info

Publication number: CN215897405U
Application number: CN202121538288.XU
Authority: CN
Inventors: 陈天云; 彭俏; 杜雯; 倪颇; 殷雄
Original assignee: Wuxi Original Mechanical & Electrical Co ltd
Current assignee: Wuxi Original Mechanical & Electrical Co ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2022-02-22
Anticipated expiration: 2031-07-07

Abstract

The utility model discloses a rotor end plate and a permanent magnet motor adopting the same, and the rotor end plate comprises an end plate body; the edge of the end plate body is connected with a clamping piece; the clamping piece is in a 7-shaped structure; the clamping pieces are arranged pairwise; the clamping pieces of the same pair are bent back to each other to form a T-shaped structure together; after the magnetic steel is installed, the clamping piece can be directly bent to clamp the magnetic steel, so that a limiting effect is achieved, the magnetic steel is prevented from being ejected out in a displacement mode, the installation steps are greatly simplified, and the assembly efficiency of the permanent magnet motor is improved; meanwhile, the paired clamping pieces can realize the bilateral positioning of the end plate body in a single connecting direction, so that the mounting adaptability is improved, and the stability of the end plate for resisting bidirectional torsion is enhanced.

Description

Rotor end plate and permanent magnet motor adopting same

Technical Field

The utility model relates to the field of motor equipment, in particular to a rotor end plate and a permanent magnet motor adopting the same.

Background

In the conventional permanent magnet motor rotor structure in the market, rotor punching sheets are generally laminated on a shaft, then two ends of the rotor punching sheets are tightly pressed by rotor end plates with the same shape as the rotor groove shape, then two sides of the rotor punching sheets are screwed tightly through long screw rods, and finally one end of the rotor punching sheet is welded with a rotor pressing ring, so that the whole rotor iron core is fixed on the shaft; then, magnetic steel is plugged, and the long screw is removed to assemble the magnetic steel baffle; the whole assembly process is relatively complicated and time-consuming. Therefore, it is necessary to provide a rotor end plate with high installation speed and high structural stability and a permanent magnet motor using the same.

Disclosure of Invention

The purpose of the utility model is as follows: in order to overcome the defects in the prior art, the utility model provides the rotor end plate with high installation speed and high structural stability and the permanent magnet motor adopting the end plate.

The technical scheme is as follows: in order to achieve the above object, a rotor end plate of the present invention includes an end plate body; the edge of the end plate body is connected with a clamping piece; the clamping piece is in a 7-shaped structure; the clamping pieces are arranged pairwise; the clamping pieces of the same pair are bent back to each other to form a T-shaped structure together.

Furthermore, a plurality of pairs of clamping pieces are circumferentially and uniformly distributed at the edge of the end plate body.

Further, the edge profile of the end plate body is in a regular polygon structure; the clamping piece is correspondingly connected and arranged at the vertex of the polygonal outline of the end plate body.

Further, a first positioning hole is formed in the end plate body; and a connecting line between the circle center of the first positioning hole and the central point of the end plate body is vertical to and bisects the side length of the polygon of the end plate body.

Further, the circle center of the first positioning hole is located at the width center of the end plate body.

Furthermore, a second positioning hole is formed in the end plate body; a connecting line between the second positioning hole and the central point of the end plate body is vertical to and bisects the side length of the polygon of the end plate body; the first positioning holes and the second positioning holes are distributed in a circular staggered mode.

Further, the second positioning hole is provided in plural in the same radial direction with respect to the center point of the end plate body.

Furthermore, the center of the circle of the second positioning holes in the same radial direction equally divides the width of the end plate body.

Furthermore, the permanent magnet motor adopting the rotor end plate comprises a rotor core and magnetic steel; the magnetic steel is arranged on the periphery of the rotor core; the end plate bodies are arranged at two ends of the magnetic steel in pairs; the clamping piece is bent to clamp the magnetic steel.

Further, the device also comprises a rotating shaft; the rotating shaft is matched and penetrates through the rotor core; limiting grooves are formed in two ends of the rotating shaft; a limiting piece is embedded in the limiting groove; and a rotor baffle is clamped between one side of the end plate body, which is back to the magnetic steel, and the limiting part.

Has the advantages that: the utility model discloses a rotor end plate, which comprises an end plate body; the edge of the end plate body is connected with a clamping piece; the clamping piece is in a 7-shaped structure; the clamping pieces are arranged pairwise; the clamping pieces of the same pair are bent back to each other to form a T-shaped structure together; the clamping part can clamp the magnetic steel after being knocked and bent to achieve a limiting effect, so that the magnetic steel is prevented from being ejected out in a displacement mode; simultaneously, be provided with first locating hole and second locating hole along self radial direction on the end plate body, two kinds of hole site rings are to crisscross distribution, can satisfy the cooperation demand of other permanent-magnet machine inner structure spare, compromise the overall structure intensity of end plate body simultaneously.

Drawings

FIG. 1 is a schematic view of a rotor end plate construction;

FIG. 2 is a schematic diagram of the overall structure of a permanent magnet motor;

FIG. 3 is a schematic structural diagram of a commercially available permanent magnet motor rotor;

wherein the components represented by the respective reference numerals are as follows:

1. the end plate comprises an end plate body, 2, a clamping piece, 3, a first positioning hole, 4, a second positioning hole, 5, a rotor core, 6, magnetic steel, 7, a rotating shaft, 8, a limiting groove, 9, a limiting piece, 10 and a rotor baffle.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

A rotor end plate, as shown in fig. 1, comprises an end plate body 1; the edge of the end plate body 1 is connected with a clamping piece 2; the clamping piece 2 is in a 7-shaped structure; the clamping pieces 2 are arranged pairwise; the clamping pieces 2 of the same pair are bent back to form a T-shaped structure;

after the magnetic steel is installed, the part of the clamping piece 2 of the end plate body 1 is directly knocked to be bent, so that the magnetic steel is clamped to achieve a limiting effect, and the magnetic steel is prevented from being ejected out in a displacement mode. The existence of the clamping piece 2 saves the mode that two ends of the long screw rod are fixed in the traditional structure, greatly simplifies the installation steps and improves the assembly efficiency of the permanent magnet motor. In addition, the rotor end plate can be made of 08F stamping steel with the plate thickness of 2.0mm, and the integral forming is convenient and quick; meanwhile, the paired clamping pieces 2 can realize the bilateral positioning of the end plate body 1 in a single connecting direction, so that the mounting adaptability is improved, and the stability of the end plate for resisting bidirectional torsion is enhanced.

The plurality of pairs of clamping pieces 2 are annularly and uniformly distributed at the edge of the end plate body 1; the clamping piece 2 is positioned at the edge position of the end plate body 1, so that the end plate and the magnetic steel are not influenced to be close to each other, and the tidiness and firmness of a matching interface are ensured; the pattern that the annular distributes then can make end plate body 1 keep unanimous with the spacing connection of magnet steel in all directions, further promotes holistic operating stability.

The edge profile of the end plate body 1 is in a regular polygon structure; the clamping pieces 2 are correspondingly connected and arranged at the vertex of the polygonal outline of the end plate body 1; utilize the natural partition structure of polygon profile, be convenient for standardize the distribution position of fastener 2, the polygon apex compares in the length of side part of both sides outwards outstanding simultaneously, reduces the interference of magnet steel terminal surface, is more suitable for the dress card fixed action after fastener 2 knocks over.

A first positioning hole 3 is formed in the end plate body 1; a connecting line between the circle center of the first positioning hole 3 and the central point of the end plate body 1 is vertical to and bisects the side length of the polygon of the end plate body 1; the first positioning hole 3 can be correspondingly communicated with the hole position of the magnetic steel to form a cavity to assist the work of electromagnetic induction, and a structural part can be inserted into the first positioning hole to enhance the installation stability of the magnetic steel.

The circle center of the first positioning hole 3 is positioned at the width center of the end plate body 1; the distance is reserved between the first hole position 3 and the inner edge and the outer edge of the end plate body 1, so that the deformation and the cracking of the narrow-distance part caused by overlarge load can be avoided.

A second positioning hole 4 is also formed in the end plate body 1; a connecting line between the second positioning hole 4 and the central point of the end plate body 1 is vertical to and bisects the side length of the polygon of the end plate body 1; the first positioning holes 3 and the second positioning holes 4 are distributed in an annular staggered manner; the diameter of the opening of the second positioning hole 4 is smaller than that of the first hole position 3, and the second positioning hole is also used for mounting other structural components in the permanent magnet motor; the method for forming hole sites with various sizes on the end plate body belongs to the general practice in the industry, and the specific sizes are different according to the purposes and are not described herein; the staggered distribution of the holes can avoid excessive large holes at local parts, thereby optimizing the overall structural strength.

The second positioning holes 4 are arranged in a plurality in the same radial direction relative to the center point of the end plate body 1; the advantage that the second hole site distributes along radial lies in, is convenient for the drill bit to switch when the hole site is processed, also is favorable to simplifying the holistic dynamic balance design work of end plate body simultaneously.

The circle centers of a plurality of second positioning holes 4 in the same radial direction equally divide the width of the end plate body 1; therefore, enough space can be reserved between the adjacent hole sites, the deformation and cracking inside the end plate body 1 are avoided, and meanwhile, the structural strength between the hole sites and the inner side and the outer side of the end plate body 1 is also considered.

A permanent magnet motor using a rotor end plate, as shown in fig. 2, includes a rotor core 5 and magnetic steel 6; the magnetic steel 6 is arranged on the periphery of the rotor core 5; the end plate bodies 1 are arranged at two ends of the magnetic steel 6 in pairs; the clamping piece 2 is bent to clamp the magnetic steel 6; in the installation, only need to finish the magnet steel installation back, directly utilize end plate body 1 just can carry out spacing connection to the magnet steel, and need not like shown in fig. 3 still need greatly promote the installation effectiveness with the help of structures such as screw rod.

The permanent magnet motor also comprises a rotating shaft 7; the rotating shaft 7 is matched and penetrates through the rotor core 5; two ends of the rotating shaft 7 are provided with limiting grooves 8; a limiting piece 9 is embedded in the limiting groove 8; a rotor baffle plate 10 is clamped between one side of the end plate body 1, which is back to the magnetic steel 6, and the limiting piece 9; the limit piece 9 is matched with the rotor baffle 10, so that the two ends of the connection structure of the magnetic steel 6 and the end plate body 1 can be restrained, and the overall operation stability of the permanent magnet motor 7 is further improved; meanwhile, the limiting part can be easily detached parts such as a flat key and the like, and the improvement of the maintenance efficiency of the permanent magnet motor in the later period is facilitated.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the utility model and these are intended to be within the scope of the utility model.

Claims

1. A rotor end plate, characterized by: comprises an end plate body (1); the edge of the end plate body (1) is connected with a clamping piece (2); the clamping piece (2) is in a 7-shaped structure; the clamping pieces (2) are arranged in pairs; the clamping pieces (2) of the same pair are bent back to form a T-shaped structure together.

2. A rotor end plate according to claim 1, wherein: the clamping pieces (2) are circumferentially and uniformly distributed at the edge of the end plate body (1).

3. A rotor end plate according to claim 2, wherein: the edge profile of the end plate body (1) is in a regular polygon structure; the clamping piece (2) is correspondingly connected and arranged at the vertex of the polygonal outline of the end plate body (1).

4. A rotor end plate according to claim 3, wherein: a first positioning hole (3) is formed in the end plate body (1); the connecting line between the circle center of the first positioning hole (3) and the central point of the end plate body (1) is vertical to and bisects the side length of the polygon of the end plate body (1).

5. A rotor end plate according to claim 4, wherein: the circle center of the first positioning hole (3) is located at the width center of the end plate body (1).

6. A rotor end plate according to claim 4, wherein: a second positioning hole (4) is formed in the end plate body (1); a connecting line between the second positioning hole (4) and the central point of the end plate body (1) is vertical to and bisects the side length of the polygon of the end plate body (1); the first positioning holes (3) and the second positioning holes (4) are distributed in a circular staggered mode.

7. A rotor end plate according to claim 6, wherein: the second positioning holes (4) are arranged in a plurality in the same radial direction relative to the center point of the end plate body (1).

8. A rotor end plate according to claim 7, wherein: the circle centers of the second positioning holes (4) in the same radial direction divide the width of the end plate body (1) equally.

9. A permanent magnet electric machine employing a rotor end plate according to any of claims 1-8, characterized in that: comprises a rotor iron core (5) and magnetic steel (6); the magnetic steel (6) is arranged on the periphery of the rotor core (5); the end plate bodies (1) are arranged at two ends of the magnetic steel (6) in pairs; the clamping piece (2) is bent to clamp the magnetic steel (6).

10. The permanent magnet electric machine of claim 9, wherein: also comprises a rotating shaft (7); the rotating shaft (7) is matched and penetrates through the rotor core (5); limiting grooves (8) are formed in the two ends of the rotating shaft (7); a limiting piece (9) is embedded in the limiting groove (8); and a rotor baffle (10) is clamped between one side of the end plate body (1) back to the magnetic steel (6) and the limiting part (9).