CN111864927A

CN111864927A - Motor divides tooth formula stator core

Info

Publication number: CN111864927A
Application number: CN202010752781.5A
Authority: CN
Inventors: 何林; 朱国强; 李厅
Original assignee: Chongqing Lihua Automatic Technology Co ltd
Current assignee: Chongqing Lihua Automatic Technology Co ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2020-10-30

Abstract

The invention provides a motor teeth-separating stator core which comprises a plurality of core teeth and a plurality of connecting strips, wherein each core tooth comprises a core body and a tooth body which is formed at the inner end part of the core body and extends along the circumferential direction of a motor stator, two side surfaces of the core body, far away from the tooth body, are provided with first clamping parts, two side surfaces of the connecting strips are provided with second clamping parts, the core teeth and the connecting strips are annularly arranged at intervals one by one, and the first clamping parts, far away from the two side surfaces of the core body, are matched and clamped with the second clamping parts of the two adjacent connecting strip side surfaces. This application divide into iron core tooth and two units of even strip with stator core, iron core tooth and even strip through first block portion and the cooperation joint of second block portion, and the iron core tooth is including being iron core body and the tooth body that T style of calligraphy structure is constituteed, therefore the clearance of iron core tooth adjacent iron core body when typesetting is less relatively for typesetting preparation stator core's material utilization ratio is higher, has effectively improved preparation stator core's material utilization ratio.

Description

Motor divides tooth formula stator core

Technical Field

The invention relates to the technical field of motors, in particular to a motor tooth-division type stator core.

Background

The stator core is the basis of the electromagnetic conversion of the motor, is an important component of a motor magnetic circuit, and forms a complete magnetic circuit of the motor together with the rotor core and the air gaps between the stator and the rotor. The stator core in the market at present is divided into an integral type and a tooth type, the tooth type stator core structure is generally shown in fig. 7, and the tooth of the stator core is generally formed by punching in a typesetting mode shown in fig. 8. The inventor of the invention discovers through research that the gap between the teeth of the iron core is larger when the teeth of the iron core are typeset because the teeth of the iron core are of an approximately I-shaped structure with the outer length and the inner length, so that the material utilization rate of the stator iron core manufactured by typesetting is lower, and the assembly of the hollow coil is inconvenient, so that the slot fullness rate cannot be improved.

Disclosure of Invention

The invention provides a motor tooth division type stator core, aiming at the technical problem that the material utilization rate of typesetting for manufacturing the stator core is low due to the fact that gaps among teeth of the iron core teeth are large when the iron core teeth are typeset because the iron core teeth are of an approximately I-shaped structure with long outer parts and short inner parts.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a motor divides tooth-like stator core, includes a plurality of iron core teeth and a plurality of even strip, the iron core tooth includes iron core body and shaping in the iron core body tip and along the tooth body that motor stator circumference extends, the both sides face that tooth body one end was kept away from to the iron core body is equipped with first block portion, the both sides face of even strip is equipped with second block portion, a plurality of iron core teeth and a plurality of even strip interval ring array one by one, the iron core body is kept away from the first block portion of tooth body one end both sides face and is adjoined two second block portion cooperation joints that link the strip side.

Compared with the prior art, the motor teeth-separating stator core provided by the invention has the advantages that the stator core is divided into two units, namely the iron core teeth and the connecting strip, the iron core teeth comprise the iron core body and the tooth body which is formed at the inner end part of the iron core body and extends along the circumferential direction of the motor stator, the two side surfaces of the iron core body, far away from the tooth body, are provided with the first clamping parts, the two side surfaces of the connecting strip are provided with the second clamping parts, the iron core teeth and the connecting strip are clamped and connected in a matched mode through the first clamping parts and the second clamping parts, and the iron core teeth formed by the iron core body and the tooth body are in a T-shaped structure, so that the gaps between the adjacent iron core bodies are relatively small when the iron core teeth are typesetting, the material utilization rate for.

Further, the first clamping part is a recess lower than the tooth base surface, and the second clamping part is a protrusion higher than the strip base surface.

Further, the first clamping part is a protrusion higher than the tooth base surface, and the second clamping part is a recess lower than the strip base surface.

Further, the recess is an arc recess, and the protrusion is an arc protrusion.

Drawings

Fig. 1 is a schematic perspective view of a split stator core of a motor provided by the invention.

Fig. 2 is a schematic front view structure diagram of a split stator core of a motor provided by the invention.

Fig. 3 is a schematic structural diagram of core teeth in the split stator core of the motor provided by the invention.

Fig. 4 is a schematic diagram of the lamination layout of the iron core teeth in fig. 3.

Fig. 5 is a schematic structural diagram of a connecting strip in a split stator core of a motor provided by the invention.

FIG. 6 is a schematic diagram illustrating a layout manner of connected sheets in FIG. 5.

Fig. 7 is a schematic front view of a split-tooth stator core provided in the prior art.

Fig. 8 is a schematic diagram of a layout manner of teeth in a tooth-division type stator core provided in the prior art.

In the figure, 1, iron core teeth; 11. an iron core body; 111. a first engaging portion; 12. a tooth body; 2. connecting the strips; 21. a second engaging portion.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

In the description of the present invention, it is to be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but 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. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 6, the present invention provides a motor teeth-separating stator core, including a plurality of core teeth 1 and a plurality of connecting bars 2, where the core teeth 1 include a core body 11 and a tooth body 12 formed at an inner end of the core body 11 and extending along a circumferential direction of a motor stator, two side surfaces of one end of the core body 11 away from the tooth body 12 are provided with first engaging portions 111, that is, the first engaging portions 111 are disposed near an outer end of the core body 11, two side surfaces of the connecting bars 2 are provided with second engaging portions 21, the plurality of core teeth 1 and the plurality of connecting bars 2 are annularly arranged one by one at intervals, that is, two units of the core teeth 1 and the connecting bars 2 are annularly arranged one by one, and the first engaging portions 111 at two side surfaces of one end of the core body 11 away from the tooth body 12 are in fit and snap-joint with the second engaging portions 21 at two side surfaces of the adjacent connecting bars 2.

As a specific example, the first engaging portion 111 is a recess lower than the tooth base surface (i.e., the contact surface adjacent to the continuous strip), and the second engaging portion 21 is a protrusion higher than the strip base surface (i.e., the contact surface adjacent to the core body), so that the core tooth 1 and the continuous strip 2 are nested together by the cooperation of the recess and the protrusion.

As another specific example, the first engaging portion 111 is a protrusion higher than a tooth base surface (i.e., a contact surface adjacent to the tie bar), and the second engaging portion 21 is a recess lower than a bar base surface (i.e., a contact surface adjacent to the core body), so that the core tooth 1 and the tie bar 2 are nested together by the protrusion and the recess.

In a specific embodiment, the recess is an arc-shaped recess, and the protrusion is an arc-shaped protrusion, so that the punching of the first engaging portion 111 and the second engaging portion 21 is easier. Of course, on the basis of this, those skilled in the art may also realize the circular arc-shaped recess and the protrusion in other shapes such as a square or a triangular recess and protrusion.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. The utility model provides a motor divides tooth formula stator core, its characterized in that includes a plurality of iron core teeth (1) and a plurality of even strip (2), iron core tooth (1) includes iron core body (11) and shaping in iron core body (11) tip and along motor stator circumference extended tooth body (12), the both sides face that tooth body (12) one end was kept away from in iron core body (11) is equipped with first block portion (111), the both sides face of even strip (2) is equipped with second block portion (21), a plurality of iron core teeth (1) and a plurality of even strip (2) interval ring-type are arranged one by one, first block portion (111) of tooth body (12) one end both sides face are kept away from in iron core body (11) and the second block portion (21) cooperation joint of two even strip (2) sides that adjoin.

2. The electric machine split-tooth stator core according to claim 1, characterized in that the first engaging portion (111) is a depression below the tooth base plane and the second engaging portion (21) is a protrusion above the bar base plane.

3. The electric machine split-tooth stator core according to claim 1, characterized in that the first engaging portion (111) is a protrusion above the tooth base surface and the second engaging portion (21) is a recess below the bar base surface.

4. The split tooth type stator core of an electric motor according to claim 2 or 3, wherein the recess is an arc-shaped recess, and the protrusion is an arc-shaped protrusion.