CN215300296U - Square stator core - Google Patents

Abstract

The utility model discloses a square stator core, which comprises a core body, a front pressing ring, a rear pressing ring and a pull rod, wherein the front pressing ring and the rear pressing ring are respectively pressed at two ends of the core body; a plurality of air path holes penetrating through two ends of the iron core body are respectively formed in the yoke part and four corners corresponding to the iron core body, the section of each air path hole is circular, the air path holes are arranged at intervals, and a magnetic conduction part of the iron core body is formed between every two adjacent air path holes; four corners of the iron core body are respectively provided with a pull rod hole, the outer side of each pull rod hole is provided with a welding gap, each pull rod penetrates through the corresponding pull rod hole, is welded with the corresponding stator punching sheet in a welding mode, and a first welding seam is formed in the welding gap at the outer side of each pull rod; the iron core body is of a square structure, occupies a small space, is compact and attractive in appearance, saves the using amount of raw materials, and reduces the manufacturing cost.

Description

Square stator core

Technical Field

The utility model relates to a motor manufacturing technology field, concretely relates to square stator core.

Background

The existing stator punching sheet is circular, and after the iron core with a certain length is stacked, the iron core needs to be fixed by adding a supporting seat, and because the supporting seat and the iron core need to be assembled for the second time, a gap exists between the supporting seat and the iron core, and heat dissipation is influenced.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing a square stator core that heat dispersion is good.

The utility model adopts the technical proposal that:

the square stator core comprises a core body, wherein the core body is formed by laminating a plurality of stator punching sheets, the core body comprises a yoke part with a circular central hole, a plurality of wire embedding grooves are arranged at intervals along the circumferential direction of the central hole, and a tooth part is arranged between every two adjacent wire embedding grooves; the iron core comprises an iron core body, and is characterized by further comprising a front pressing ring, a rear pressing ring and a pull rod, wherein the front pressing ring and the rear pressing ring are respectively pressed at two ends of the iron core body, and the iron core body, the front pressing ring and the rear pressing ring are all of square structures; a plurality of air path holes penetrating through two ends of the iron core body are respectively formed in the yoke part and four corners corresponding to the iron core body, the section of each air path hole is circular, the air path holes are arranged at intervals, and a magnetic conduction part of the iron core body is formed between every two adjacent air path holes; the iron core comprises an iron core body and is characterized in that four corners of the iron core body are respectively provided with a pull rod hole, the outer side of the pull rod hole is provided with a welding gap, the pull rod penetrates through the pull rod hole and is welded with a corresponding stator punching sheet in a welding mode, and a first welding line is formed in the welding gap on the outer side of the pull rod.

Further, follow iron core body circumference is equipped with multirow wind path hole, and every row is equipped with a plurality of wind path holes, and the wind path hole dislocation set of adjacent two rows.

Furthermore, the connection line of the circle centers of the air exhaust holes is an arc line.

Furthermore, four sides of the iron core body are respectively provided with an inwards concave welding groove, two welding grooves are arranged on each side at intervals, the stator punching sheets are connected into a whole in a welding mode, and second welding seams are formed in the welding grooves.

Furthermore, an inwards concave mark groove is formed in one edge of each stator punching sheet, and the mark grooves of each stator punching sheet of the iron core body are located on the same side.

Further, the air path holes are three rows.

Further, the welding gap is communicated with the pull rod hole and is in smooth transition.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

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 embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of a square stator core according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a stator punching sheet provided in an embodiment of the present application.

The stator punching sheet comprises a stator punching sheet 1, a center hole 11, a wire embedding groove 12, a tooth part 13, a yoke part 14, an air path hole 15, a welding notch 16, a magnetic conduction part 17, a welding groove 18, a mark groove 19, a front pressing ring 2, a rear pressing ring 3 and a pull rod 4.

Detailed Description

Here, it is to be noted that the functions, methods, and the like related to the present invention are only conventional adaptive applications of the related art. Therefore, the present invention is an improvement of the prior art, which substantially lies in the connection relationship between hardware, not in the functions and methods themselves, that is, the present invention relates to a few functions and methods, but does not include the improvements proposed in the functions and methods themselves. The present invention is described for better illustration of the function and method for better understanding of the present invention.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

Referring to fig. 1 to 2, the square stator core of the present application includes a core body, the core body is formed by laminating a plurality of stator laminations 1, the core body includes a yoke portion 14 having a circular central hole 11, a plurality of slot inserts 12 are arranged along the central hole 11 at intervals in the circumferential direction, and a tooth portion 13 is arranged between two adjacent slot inserts 12; the iron core comprises an iron core body, and is characterized by further comprising a front pressing ring 2, a rear pressing ring 3 and a pull rod 4, wherein the front pressing ring 2 and the rear pressing ring 3 are respectively pressed at two ends of the iron core body, and the iron core body, the front pressing ring 2 and the rear pressing ring 3 are all of square structures; a plurality of air path holes 15 penetrating through two ends of the iron core body are respectively formed in the yoke part 14 and four corners corresponding to the iron core body, the cross section of each air path hole 15 is circular, the air path holes 15 are arranged at intervals, and a magnetic conductive part 17 of the iron core body is formed between every two adjacent air path holes 15; four angles of the iron core body are respectively provided with a pull rod hole, the outer side of the pull rod hole is provided with a welding gap 16, the pull rod 4 penetrates through the pull rod hole, and is welded with the corresponding stator punching sheet 1 in a welding mode, and a first welding line is formed in the welding gap 16 on the outer side of the pull rod 4.

The iron core body is of a square structure, so that the occupied space is small, the appearance is compact and attractive, the consumption of raw materials is saved, and the manufacturing cost is reduced; the stator punching sheet 1 is laminated into a whole through the front pressing ring 2, the rear pressing ring 3 and the pull rod 4, a supporting seat is not required, heat dissipation cannot be affected due to secondary assembly, and the heat dissipation performance is good; meanwhile, the plurality of air path holes 15 are respectively formed in the four corners of the iron core body, the air path holes 15 are of a circular hole structure, the service life of the die can be obviously prolonged, the punching efficiency is improved, meanwhile, the ventilation wind resistance can be reduced through the circular air path holes 15, the wind speed is increased, and the integral heat dissipation capacity of the stator punching sheet 1 is improved; a magnetic conductive part 17 is formed between two adjacent air passage holes 15, which is beneficial to the passing of magnetic lines of force and can reduce the magnetic saturation of the whole yoke part 14; the welding gap 16 is arranged on the outer side of the pull rod hole, when the pull rod 4 is welded, the welding gap 16 can be welded, a first welding line is formed in the welding gap 16, and the welding line is neat and attractive.

The air holes 15 are arranged along the length direction of the iron core body and penetrate through two ends of the iron core body, the air holes 15 can be arranged in multiple rows, each row is provided with a plurality of air holes 15, in the embodiment, three rows of air holes 15 are respectively arranged on the yoke portion 14 and four corners corresponding to the iron core body, and the air holes 15 in two adjacent rows are arranged in a staggered mode. The connection line of the circle centers of the air duct holes 15 is an arc line; further facilitating the passage of magnetic lines of force and increasing the magnetic path area of the effective yoke portion 14.

The pull rod holes are arranged at four corners of the iron core body, are arranged along the length direction of the iron core body and penetrate through two ends of the iron core body, one side of each pull rod hole is provided with a welding notch 16, and the welding notches 16 are communicated with the pull rod holes and are in smooth transition; the pull rod 4 penetrates through the pull rod hole and is welded with the corresponding stator punching sheet 1 in a welding mode, the welding position is in the welding gap 16, and after welding, a first welding seam is formed in the welding gap 16; through the outside at the draw bar hole set up rather than the welding breach 16 that communicates for when the welding, welding material all is located welding breach 16, and the accurate welding position of being convenient for on the one hand, on the other hand can form neat, pleasing to the eye welding seam in welding breach 16, and improves welding stability.

The four side surfaces of the iron core body are respectively provided with an inward-sunken welding groove 18, the welding grooves 18 are arranged along the length direction of the iron core body, and two welding grooves 18 are arranged on each side surface at intervals, so that adjacent stator punching sheets 1 can be conveniently welded together, and the iron core body is formed; welding grooves 18 are formed in four side faces of the iron core body respectively, welding can be conducted in the welding grooves 18, neat and attractive second welding seams are formed, the strength of the whole stator iron core is enhanced, and deformation of the stator iron core is avoided.

An inwards concave mark groove 19 is arranged on one side of the stator punching sheet 1 to play a role in marking, and the mark groove 19 of each stator punching sheet 1 of the iron core body is arranged on the same side.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral combinations thereof; may be an electrical connection; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, systems, and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, system, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, systems, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (7)

1. The square stator core comprises a core body, wherein the core body is formed by laminating a plurality of stator punching sheets, the core body comprises a yoke part with a circular central hole, a plurality of wire embedding grooves are arranged at intervals along the circumferential direction of the central hole, and a tooth part is arranged between every two adjacent wire embedding grooves; the iron core is characterized by further comprising a front pressing ring, a rear pressing ring and a pull rod, wherein the front pressing ring and the rear pressing ring are respectively pressed at two ends of the iron core body, and the iron core body, the front pressing ring and the rear pressing ring are all of a square structure; a plurality of air path holes penetrating through two ends of the iron core body are respectively formed in the yoke part and four corners corresponding to the iron core body, the section of each air path hole is circular, the air path holes are arranged at intervals, and a magnetic conduction part of the iron core body is formed between every two adjacent air path holes; the iron core comprises an iron core body and is characterized in that four corners of the iron core body are respectively provided with a pull rod hole, the outer side of the pull rod hole is provided with a welding gap, the pull rod penetrates through the pull rod hole and is welded with a corresponding stator punching sheet in a welding mode, and a first welding line is formed in the welding gap on the outer side of the pull rod.

2. The square stator core according to claim 1, wherein a plurality of rows of air holes are formed along the circumferential direction of the core body, each row has a plurality of air holes, and the air holes of two adjacent rows are arranged in a staggered manner.

3. The square stator core according to claim 2, wherein a line connecting centers of the air holes of each row is an arc line.

4. The square stator core according to claim 1, wherein four side surfaces of the core body are respectively provided with an inwardly recessed welding groove, two welding grooves are arranged on each side surface at intervals, the stator laminations are connected into a whole by welding, and a second welding seam is formed in the welding grooves.

5. The square stator core according to claim 1, wherein one side of the stator lamination is provided with an inward concave mark groove, and the mark grooves of each stator lamination of the core body are on the same side.

6. The square stator core according to claim 2, wherein the air passage holes are three rows.

7. The square stator core of claim 1, wherein the weld notch is in communication with the tie rod bore and is in smooth transition.

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