CN211530864U

CN211530864U - Stator punching sheet structure

Info

Publication number: CN211530864U
Application number: CN202020635527.2U
Authority: CN
Inventors: 聂鹏举; 刘辉; 陈慧文
Original assignee: Shenzhen Kelier Motor Co ltd
Current assignee: Shenzhen Kelier Motor Co ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-09-18
Anticipated expiration: 2030-04-24

Abstract

The utility model discloses a stator punching sheet structure, including the stator punching sheet, the stator punching sheet includes stator yoke portion (1), tooth body (2) and tooth crown (3), tooth crown (3) are connected with (2) stator yoke portion (1) through the tooth body, tooth crown (3) set up stator yoke portion (1) medial surface round through tooth body (2) around, every tooth crown (3) shape is formed by first straightway, second straightway and circular arc section combination, wherein first straightway, the second straightway is tangent with the circular arc section respectively, and the angle that the circular arc section corresponds is theta. The utility model discloses can effectively reduce the radial magnetism pulling force density peak value of chip tooth crown for the radial magnetism pulling force density distribution of chip tooth crown is more even, effectively reduces motor vibration and noise. The structure keeps the arc section, so that the whole stator punching structure keeps a reference circle, and the quality control of the concentricity of the outer diameter and the inner diameter is facilitated.

Description

Stator punching sheet structure

Technical Field

The utility model relates to a brushless motor field, concretely relates to stator punching sheet structure.

Background

Along with the rapid development of motor technology in recent years, rare earth permanent magnet brushless direct current motors are widely applied, the motors are smaller and smaller, the power density is higher and higher, the problem of vibration noise of the motors is more and more prominent, most consumers have high requirements on the performance of the motors and also require low vibration and low noise, the problem makes the design of the motors more difficult, and innovations are mainly made on the magnetic pole structure of a rotor in the mode of reducing the vibration noise, and most auxiliary grooves are only made to improve the stator part, but the design requirements are difficult to meet.

Disclosure of Invention

The utility model aims to solve the technical problem that a stator punching sheet structure, aim at improve motor efficiency and reduce motor vibration noise.

The utility model discloses a realize through following technical scheme: the utility model provides a stator punching sheet structure, includes the stator punching sheet, and the stator punching sheet includes stator yoke portion, tooth body and tooth crown, and the tooth crown passes through the tooth body to be connected with stator yoke portion, and the tooth crown sets up around stator yoke portion medial surface round through the tooth body, and every tooth crown shape is formed by first straight line section, second straightway and circular arc section combination, and wherein first straight line section, second straightway are tangent with the circular arc section respectively to the angle that the circular arc section corresponds is theta.

As a preferable technical scheme, the width of the notch is more than or equal to 3mm and less than or equal to 4 mm.

As a preferable technical scheme, the inner diameter of the stator is more than or equal to 48mm and less than or equal to 60 mm.

Preferably, the tooth width is more than or equal to 6mm and less than or equal to 9mm

As a preferable technical scheme, the outer diameter of the stator is more than or equal to 80mm and less than or equal to 100 mm.

As a preferable technical scheme, the included angle theta corresponding to the circular arc section is more than or equal to 10 degrees and less than or equal to 20 degrees.

The utility model has the advantages that: the utility model discloses a can effectively reduce the radial magnetic tension density peak value of chip tooth crown for the radial magnetic tension density of chip tooth crown distributes more evenly, effectively reduces motor vibration and noise. The structure keeps the arc section, so that the whole stator punching structure keeps a reference circle, and the quality control of the concentricity of the outer diameter and the inner diameter is facilitated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "one end", "the other end", "the outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The use of terms herein such as "upper," "above," "lower," "below," and the like in describing relative spatial positions is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly

In the present invention, unless otherwise explicitly specified or limited, the terms "set", "coupled", "connected", "penetrating", "plugging", and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1, the utility model discloses a stator punching sheet structure, including the stator punching sheet, the stator punching sheet includes stator yoke portion 1, tooth body 2 and tooth crown 3, and tooth crown 3 is connected with stator yoke portion 1 through tooth body 2, and tooth crown 3 sets up through tooth body 2 around 1 medial surface round of stator yoke portion, and every tooth crown 3 shape is formed by first straight line section, second straightway and circular arc section combination, and wherein first straight line section, second straightway are tangent with the circular arc section respectively to the angle that the circular arc section corresponds is theta.

In this embodiment, the crown shape is not a single circular arc, but is formed by combining a first straight line segment AB, a circular arc segment BC, and a second straight line segment CD, where the first straight line segment AB and the second straight line segment CD are tangent to the circular arc segment BC, respectively, and an angle corresponding to the circular arc is θ. This structure can effectively reduce the radial magnetic tension density peak value of chip tooth crown for the radial magnetic tension density distribution of chip tooth crown is more even, effectively reduces motor vibration and noise. The structure keeps the arc section, so that the whole stator punching structure keeps a reference circle, and the quality control of the concentricity of the outer diameter and the inner diameter is facilitated.

In the embodiment, the width of the notch is S, and S is more than or equal to 3mm and less than or equal to 4 mm; the inner diameter of the stator is Wi, and Wi is more than or equal to 48mm and less than or equal to 60 mm; the tooth width is T, and T is more than or equal to 6mm and less than or equal to 9 mm; the outer diameter of the stator is Wo, and Wo is more than or equal to 80mm and less than or equal to 100 mm; the included angle theta corresponding to the circular arc of the tooth crown is more than or equal to 10 degrees and less than or equal to 20 degrees.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. The utility model provides a stator lamination structure which characterized in that: including the stator punching sheet, the stator punching sheet includes stator yoke portion (1), tooth body (2) and tooth crown (3), tooth crown (3) are connected with stator yoke portion (1) through tooth body (2), tooth crown (3) set up through tooth body (2) around stator yoke portion (1) medial surface round, every tooth crown (3) shape is formed by first straight line section, second straight line section and circular arc section combination, wherein first straight line section, the second straight line section is tangent with the circular arc section respectively, and the angle that the circular arc section corresponds is theta.

2. The stator punching structure according to claim 1, characterized in that: wherein the width of the notch is more than or equal to 3mm and less than or equal to 4 mm.

3. The stator punching structure according to claim 1, characterized in that: wherein the inner diameter of the stator is more than or equal to 48mm and less than or equal to 60 mm.

4. The stator punching structure according to claim 1, characterized in that: wherein the tooth width is more than or equal to 6mm and less than or equal to 9 mm.

5. The stator punching structure according to claim 1, characterized in that: wherein the outer diameter of the stator is more than or equal to 80mm and less than or equal to 100 mm.

6. The stator punching structure according to claim 1, characterized in that: wherein the included angle theta corresponding to the arc section is more than or equal to 10 degrees and less than or equal to 20 degrees.