CN212183218U

CN212183218U - Novel rotor pressing plate structure

Info

Publication number: CN212183218U
Application number: CN202020696036.9U
Authority: CN
Inventors: 高志伟
Original assignee: Suzhou Lego Motors Co ltd
Current assignee: Suzhou Lego Motors Co ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-12-18
Anticipated expiration: 2030-04-29

Abstract

The utility model provides a novel rotor pressing plate structure, a side end face laminating of clamp plate is in rotor core one end, and the clamp plate includes a weight removal hole constant head tank, a plurality of dynamic balance weight removal hole, a plurality of ventilation hole, a plurality of rebalance muscle and a plurality of rebalance hole in advance, and the weight removal dynamic balance is implemented through dynamic balance weight removal hole to the clamp plate, and the ventilation hole lightens clamp plate weight when can giving rotor heat dissipation, and rebalance muscle cooperation rebalance hole can be implemented dynamic balance to the clamp plate before to the clamp plate in advance before, the utility model discloses dynamic balance position location is accurate, can give rotor heat dissipation and whole light in weight.

Description

Novel rotor pressing plate structure

Technical Field

The utility model relates to a motor structure, concretely relates to a structure that is used for rotor dynamic balance's clamp plate.

Background

With the development of motor technology. The permanent magnet motor is more and more widely applied due to the advantages of high torque density, high efficiency and the like. With the development of permanent magnet servo motors, the performances of low inertia, low vibration, low noise, high precision, long service life and the like gradually become the basic requirements of the motors.

The existing permanent magnet motor generally requires one-time dynamic balance after the rotor is assembled, and the weighting type dynamic balance is adopted, the dynamic balance position is generally realized on a pressure plate, and the rationality of the rotor pressure plate structure has a close relation with the overall reliability of the permanent magnet motor. The commonly used rotor pressing plate mostly adopts a solid metal plate with a groove on the outer side.

Because the requirements for various aspects of performance of the motor are higher and higher, the weight, inertia, matching precision, dynamic balance mode, heat dissipation, safety and the like of a rotor pressing plate are more and more emphasized, the process reliability of the weighted dynamic balance design of the pressing plate also becomes a bottleneck problem, the safety of a balance block is tested when the motor runs at high speed, the initial unbalance amount of the whole rotor always exists due to the shape of a rotor punching sheet, the matching of a key groove, the rotor oblique pole and the like, certain influence is caused on the final dynamic balance precision, the heat dissipation problem of the built-in magnetic steel is always a design difficulty, and the heat dissipation capability of the magnetic steel is increased as much as possible. Other aspects, such as weight, inertia, fit accuracy, etc., are issues that need further consideration.

In view of this, the present invention provides a novel rotor pressing plate structure for solving the above problems.

Disclosure of Invention

The utility model aims at providing a novel rotor clamp plate structure.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a novel rotor pressing plate structure is characterized in that a pressing plate is a metal circular plate with an end face contacting with a rotor iron core, a through hole concentric with the circular end face of the pressing plate is formed in a plate body, and a key groove is formed in the inner wall of the through hole;

the clamp plate includes a heavy hole constant head tank, a plurality of dynamic balance heavy hole, a plurality of ventilation hole, a plurality of rebalance muscle and a plurality of rebalance hole in advance, wherein:

the weight-removing hole positioning groove is a conical groove which is arranged on the pressing plate and is positioned on the opposite surface of the contact end surface of the pressing plate and the rotor iron core;

the plurality of dynamic balance weight-removing holes are blind holes, the blind holes are arranged on the pressing plate and are arranged on the same end surface with the weight-removing hole positioning grooves, and the weight-removing hole positioning grooves are positioning references of the dynamic balance weight-removing holes;

the plurality of ventilation holes are through holes, and are viewed towards the end face of the pressure plate, the centers of the ventilation holes are arranged on a concentric circle of the end face of the pressure plate in a central symmetry mode by taking the circle center as a reference, and the ventilation holes help the rotor to dissipate heat;

the pre-balancing ribs are rib blocks arranged on the pressing plate;

the pre-balancing holes are through holes or blind holes, the pre-balancing holes and the pre-balancing ribs are arranged on the same end face, and the pre-balancing ribs are matched to pre-balance the pressing plate.

Preferably, the pressing plate further comprises a plurality of rivet avoiding holes, the rivet avoiding holes are blind holes or through holes, the blind holes or the through holes are arranged on the pressing plate and are arranged on different end faces with the weight-removing hole positioning grooves, and therefore the rivets of the rotor iron core on the end face on one side of the pressing plate are avoided.

Preferably, the pressing plate further comprises a rivet avoiding groove, the rivet avoiding groove is a groove, the groove is arranged on the pressing plate and is arranged on different end faces with the weight-removing hole positioning groove, the rivet avoiding groove is a circular ring concentric with the end face of the pressing plate when the rivet and the weight-removing hole positioning groove are observed towards the end face of the pressing plate, and therefore the rivet of the rotor iron core on the end face of one side of the pressing plate is avoided.

Preferably, the outer diameter of one end face of the pressing plate is provided with a circle of chamfer.

Preferably, the pressure plate is provided with a weight-removing groove on the end face of the pressure plate on the same side as the weight-removing hole positioning groove, and the weight-removing groove is a circular ring concentric with the end face of the pressure plate when observed towards the end face of the pressure plate.

The relevant content in the above technical solution is explained as follows:

1. in the scheme, the weight-removing hole positioning groove is a conical groove, and when the dynamic balance is performed on the pressure plate, the relative position of each dynamic balance weight-removing hole is determined by taking the conical groove as a reference.

2. In the scheme, the dynamic balance weight-removing holes are blind holes, the weight-removing dynamic balance is implemented on the pressing plate, the weight-reducing effect can be achieved while the dynamic balance is achieved, and the number of the dynamic balance weight-removing holes is determined by the dynamic balance condition of the pressing plate.

3. In the scheme, the centers of the ventilation holes are arranged on a concentric circle of the end face of the pressure plate in a centrosymmetric manner by taking the circle center as a reference, so that the weight of the pressure plate is reduced while the heat dissipation function is realized, and the dynamic balance of the pressure plate can be kept by the mode of central symmetric arrangement.

4. In the scheme, the pre-balancing holes and the pre-balancing ribs are arranged on the same end face, so that the pre-balancing of the pressing plate can be realized according to the positions needing to be balanced on the pressing plate, which are found out in advance through pre-analysis, before the dynamic balance of the pressing plate is implemented, a more ideal balance compensation effect is achieved, and the vibration noise of the whole motor is further reduced.

5. In the above scheme, the rivet avoiding hole is a blind hole when not overlapping with the position of the heat dissipation hole, and is a through hole when overlapping with the position of the heat dissipation hole, and the rivet avoiding hole is arranged on the pressure plate corresponding to the position of the rotor rivet.

6. In the above scheme, the rivet avoiding hole is an annular groove, and the radius of the annular groove is equal to the radial distance of the rivet relative to the axis of the rotor core.

7. In the scheme, the weight of the pressing plate can be reduced by the weight removing groove, and the rotational inertia of the motor is reduced.

8. In the scheme, part of the vent holes can avoid rivets.

The working principle of the utility model is as follows:

the utility model relates to a novel rotor clamp plate structure, the clamp plate sets up in the motor with the mode of a side end face laminating rotor core terminal surface, the clamp plate includes a weight-removing hole constant head tank, a plurality of dynamic balance weight-removing hole, a plurality of ventilation hole, a plurality of rebalance muscle and a plurality of rebalance hole in advance, weight-removing hole constant head tank is the benchmark locating hole of each dynamic balance weight-removing hole, the clamp plate implements weight-removing dynamic balance through dynamic balance weight-removing hole, the ventilation hole can lighten clamp plate weight for rotor core radiating in the time, rebalance muscle cooperation rebalance hole can be implemented the clamp plate in advance before dynamic balance at the clamp plate.

Compared with the prior art, the utility model has the advantages of it is following:

the dynamic balance position locating is accurate, the reference locating holes of the dynamic balance weight removing holes are located through the weight removing hole locating grooves, the pressure plate is pre-balanced through the pre-balancing holes and the pre-balancing ribs, a more ideal balance compensation effect is achieved, and overall vibration noise of the motor is further reduced.

And secondly, the rotor core can be effectively cooled through a plurality of cooling holes.

And thirdly, weight reduction design, the weight of the pressing plate is reduced by the way of removing the weight, the weight of the pressing plate is reduced by designing the weight removal groove, and the weight of the pressing plate can be reduced by the heat dissipation holes and the chamfer angles.

Drawings

FIG. 1 is a front view of the opposite side of the contact end face of a rotor core and a pressure plate with rivet relief holes;

FIG. 2 is a front view of the contact end face of the pressing plate with rivet avoiding holes and the rotor core;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged view of portion B of FIG. 3;

FIG. 5 is an elevation view of the opposite side of the end face of the rotor core in contact with the pressure plate having rivet relief slots;

FIG. 6 is a front view of the contact end face of the rotor core and the pressing plate with rivet avoiding grooves;

FIG. 7 is a cross-sectional view taken along section line C-C of FIG. 6;

FIG. 8 is an assembly view of a rotor core and a pressure plate with rivet clearance holes in a motor;

in the above drawings: 1. pressing a plate; 2. a rotor core; 3. a weight-removing hole positioning groove; 4. dynamic balance weight-removing holes; 5. a vent hole; 6. pre-balancing ribs; 7. pre-balancing holes; 8. a rivet clearance hole; 9. a rivet avoidance slot; 10. riveting; 11. chamfering; 12. and (4) a de-weighting groove.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

example (b): novel rotor pressing plate structure

The present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the disclosure may be shown and described, and which, when modified and varied by the techniques taught herein, can be made by those skilled in the art without departing from the spirit and scope of the disclosure.

As used herein, "connected" or "positioned" refers to two or more elements or devices being in direct physical contact with each other or in indirect physical contact with each other, and may also refer to two or more elements or devices being in operation or acting on each other.

As used herein, the terms "comprising," "including," "having," and the like are open-ended terms that mean including, but not limited to.

As used herein, the term (terms), unless otherwise indicated, shall generally have the ordinary meaning as commonly understood by one of ordinary skill in the art, in this written description and in the claims. Certain words used to describe the disclosure are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the disclosure.

Now, the working principle of the present invention is explained as follows:

referring to the accompanying drawings 1 to 8, a novel rotor pressing plate structure is characterized in that a pressing plate 1 is a metal circular plate with one end face contacting with a rotor iron core 2, a through hole concentric with the circular end face of the pressing plate 1 is formed in the plate body, a key groove is formed in the inner wall of the through hole, and a weight removing hole positioning groove 3, a dynamic balance weight removing hole 4, eight ventilation holes 5, a pre-balance rib 6, an interference balance hole 7 and four rivet avoiding holes 8 are formed in the pressing plate 1.

As shown in fig. 3 and 4, the weight-removing hole positioning slot 3 is a tapered groove, and the tapered groove is arranged on the pressure plate 1 and is located on the opposite side of the contact end surface of the pressure plate 1 and the rotor core 2.

As shown in fig. 1, fig. 3, fig. 5, and fig. 7, the dynamic balance deduplication holes 4 are blind holes, the blind holes are disposed on the platen 1 and are disposed on the same end surface as the deduplication hole positioning slots 3, and the dynamic balance deduplication holes 4 are based on the deduplication hole positioning slots 3.

As shown in fig. 1 and 5, the plurality of vent holes 5 are through holes, and when viewed from the end surface of the pressure plate 1, the centers of the eight vent holes 5 are arranged on a concentric circle of the end surface of the pressure plate 1 and are centrosymmetrically arranged by taking the circle center as a reference;

as shown in fig. 1, fig. 3, fig. 5, fig. 6 and fig. 7, the pre-balancing ribs 6 are rib blocks arranged on the pressing plate 1; if the interference balance hole 7 is a through hole, the pre-balance hole 7 and the pre-balance rib 6 are arranged on the same end face, and the pre-balance rib is matched to realize pre-balance on the pressing plate.

As shown in fig. 2, the pressing plate 1 further comprises four rivet avoiding holes 8, the rivet avoiding holes 8 are blind holes or through holes, the blind holes or the through holes are arranged on the pressing plate 1 and are arranged on different end surfaces from the weight-removing hole positioning grooves 3, and part of the vent holes 5 can play a role of avoiding rivets; preferably, the rivet avoiding hole 8 has a variable structure as follows: as shown in fig. 6, the pressing plate 1 further comprises a rivet avoiding groove 9, the rivet avoiding groove 9 is a groove, the groove is arranged on the pressing plate 1 and is arranged on different end faces with the weight-removing hole positioning groove 3, the rivet avoiding groove 9 is a circular ring concentric with the end face of the pressing plate 1 when being observed towards the end face of the pressing plate 1, and the position of the rivet avoiding groove 9 is overlapped with that of the vent hole 5.

As shown in fig. 7 and 8, the outer diameter of one end surface of the pressure plate 1 is provided with a circle of chamfer 11.

As shown in fig. 1 and 5, the pressure plate 1 is provided with a deduplication groove 12 on the end surface of the pressure plate 1 on the same side as the deduplication hole positioning groove 3, and the deduplication groove 12 is a circular ring concentric with the end surface of the pressure plate 1 when viewed from the end surface of the pressure plate 1.

Other embodiments and structural changes of the present invention are described below as follows:

1. in the above embodiment, the pressing plate 1 is provided with the rivet avoiding hole 8 or the rivet avoiding groove 9, and it is also possible that the pressing plate 1 is provided with both the rivet avoiding hole 8 and the rivet avoiding groove 9, and the combined structure of any rivet avoiding hole 8 and rivet avoiding groove 9 is included in the utility model discloses in, this can be understood and accepted by those skilled in the art.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a novel rotor pressing plate structure, clamp plate (1) are the metal plectane of a terminal surface and rotor core (2) contact, are equipped with on the plate body with clamp plate (1) the endocentric through-hole of circular terminal surface, the through-hole inner wall is equipped with keyway, its characterized in that:

the pressing plate (1) comprises a weight-removing hole positioning groove (3), a plurality of dynamic balance weight-removing holes (4), a plurality of vent holes (5), a plurality of pre-balance ribs (6) and a plurality of pre-balance holes (7);

the weight-removing hole positioning groove (3) is a conical groove which is arranged on the pressure plate (1) and is positioned on the opposite surface of the contact end surface of the pressure plate (1) and the rotor core (2);

the dynamic balance weight-removing holes (4) are blind holes, and the blind holes are arranged on the pressure plate (1) and arranged on the same end face with the weight-removing hole positioning grooves (3);

the plurality of vent holes (5) are through holes, and the centers of the vent holes (5) are arranged on a concentric circle of the end surface of the pressure plate (1) and are centrosymmetrically arranged by taking the circle center as a reference when the vent holes are observed towards the end surface of the pressure plate (1);

if the interference balance rib (6) is a rib block arranged on the pressing plate (1);

if the interference balance hole (7) is a through hole or a blind hole, the pre-balance hole (7) and the pre-balance rib (6) are arranged on the same end face.

2. The platen structure of claim 1, wherein: the pressing plate (1) further comprises a plurality of rivet avoiding holes (8), the rivet avoiding holes (8) are blind holes or through holes, the blind holes or the through holes are arranged on the pressing plate (1), and the blind holes or the through holes and the weight-removing hole positioning grooves (3) are arranged on different end faces.

3. The platen structure of claim 1, wherein: the pressing plate (1) further comprises a rivet avoiding groove (9), the rivet avoiding groove (9) is a groove, the groove is arranged on the pressing plate (1) and is arranged on different end faces with the weight-removing hole positioning groove (3), observation is conducted towards the end face of the pressing plate (1), and the rivet avoiding groove (9) is a circular ring concentric with the end face of the pressing plate (1).

4. The platen structure of claim 1, wherein: the outer diameter of one end face of the pressing plate (1) is provided with a circle of chamfer (11).

5. The platen structure of claim 1, wherein: the pressing plate (1) is provided with a weight-removing groove (12) on the end face of the same side of the weight-removing hole positioning groove (3), and the weight-removing groove (12) is a circular ring concentric with the end face of the pressing plate (1) when observed towards the end face of the pressing plate (1).