CN217159391U - Novel rotor punching sheet and corresponding motor rotor - Google Patents

Abstract

The utility model provides a novel rotor punching and corresponding electric motor rotor, novel rotor punching include main part, first convex part and second convex part, and first convex part and second convex part all distribute in the week side of main part, and the second convex part is located between two adjacent first convex parts, and first convex part is used for around establishing the coil winding. A plurality of novel rotor punching coincide and form the iron core, and wherein a plurality of main part coincide forms yoke portion, and a plurality of first convex parts coincide and form the tooth portion, and a plurality of second convex parts coincide and form spacing convex part, and the insulator covers yoke portion, tooth portion and the axial terminal surface of spacing convex part, covers the week side surface of yoke portion and spacing convex part and covers the interior circumference side surface of tooth portion. Wherein spacing convex part can restrict coil winding, and the structure is more firm for the rotor rotates more balanced, has effectively improved job stabilization nature, and work is more silent.

Description

Novel rotor punching sheet and corresponding motor rotor

Technical Field

The utility model relates to the field of electric machines, in particular to novel rotor punching and corresponding electric motor rotor.

Background

Electric motors are devices commonly available on many modern industrial devices or electronic products. The rotor is an important component of the motor, a plurality of tooth parts protruding along the radial direction are arranged on one half of an iron core of the rotor, the tooth parts are used for winding coil windings, winding slots used for accommodating the coil windings are formed between the adjacent tooth parts, and insulating parts are arranged between the coil windings and the iron core for insulation. Wherein electric motor rotor among the prior art bears under the condition of vibrations through rotating for can not so symmetrical between a plurality of coil winding, and then lead to rotating unbalance easily, influence the working effect.

Therefore, it is necessary to provide a novel rotor punching sheet and a corresponding motor rotor to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel rotor punching and corresponding electric motor rotor to the electric motor rotor who solves among the prior art rotates the unbalance problem that influences the working effect easily.

In order to solve the technical problem, the utility model adopts the technical scheme that: the utility model provides a novel rotor punching, its includes main part, first convex part and second convex part, first convex part with the second convex part all distributes all are in week side of main part, just the second convex part is located adjacent two between the first convex part, first convex part is used for around establishing coil winding.

The utility model discloses in, follow novel rotor punching's radial direction, the width of second convex part reduces gradually, the outer end width of second convex part is less than inner width.

The second convex portion is located at a middle position of the first convex portion.

The utility model discloses in, first convex part is kept away from the both sides of the one end of main part extend along the circumferencial direction and are provided with the extension, the second convex part is located the inboard of extension, adjacent two form the fracture between the extension of main part, the main part with at a distance from the wire winding distance of setting for between the fracture, the second convex part is followed the length that the radial direction of novel rotor punching extends with the ratio of wire winding distance is between 1/3-1/2.

In the present invention, the main body portion, the first convex portion and the second convex portion are integrally formed

The utility model discloses still include an electric motor rotor, it includes iron core and insulating part, wherein the iron core includes above-mentioned novel rotor punching, and is a plurality of novel rotor punching coincide, wherein a plurality of main part coincide forms yoke portion, and is a plurality of first convex part coincide forms tooth portion, and is a plurality of second convex part coincide forms spacing convex part, the insulating part covers yoke portion tooth portion and spacing convex part's axial terminal surface, cover yoke portion with the week side surface of spacing convex part and cover the interior side surface of tooth portion.

The utility model discloses in, the insulating part is for the coating at insulating varnish on the iron core.

The utility model discloses in, the insulating part is the insulating cover that forms for moulding plastics.

The utility model discloses in, per two are adjacent all be provided with between the first convex part the second convex part, it is a plurality of novel rotor punching coincide in proper order, or a plurality of novel rotor punching interval between the piece is provided with ordinary rotor punching, ordinary rotor punching include with novel rotor punching structure unanimous main part and first convex part.

The utility model discloses in, the quantity of first convex part with the quantity of second convex part varies, the quantity of first convex part is greater than the quantity of second convex part, two if not set up between the first convex part the second convex part then forms the vacancy, and two coincide are adjacent the second convex part of novel rotor punching is relative with the vacancy, forms complementarily to make per two adjacent all have between the tooth portion spacing convex part.

The utility model discloses compare in prior art, its beneficial effect is: the utility model discloses an electric motor rotor's iron core is formed by novel rotor punching coincide, and a plurality of second convex parts coincide forms spacing convex part, and spacing convex part can restrict coil winding, and the structure is more firm for the rotor rotates more balanced, has effectively improved job stabilization nature, and work is more silent.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below, and the drawings in the following description are only corresponding drawings of some embodiments of the present invention.

Fig. 1 is a schematic structural diagram of a first embodiment of the novel rotor sheet of the present invention.

Fig. 2 is a schematic structural diagram of a second embodiment of the novel rotor punching sheet of the present invention.

Fig. 3 is a schematic structural diagram of a common rotor sheet.

Fig. 4 is a schematic structural diagram of the motor rotor of the present invention.

Fig. 5 is a schematic structural diagram of the motor rotor in fig. 4 after an insulating sleeve is arranged.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the directional terms, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", refer to the orientation of the drawings, and the directional terms are used for illustration and understanding, but not for limiting the present invention.

The terms "first," "second," and the like in the terms of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, nor should they be construed as limiting in any way.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "secured" are to be construed broadly, e.g., the connection may be a detachable connection or a connection in a unitary structure; can be mechanically or electrically connected; 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.

Motor rotor among the prior art bears under the condition of vibrations through rotating for can not so symmetrical between a plurality of windings, and then leads to rotating unbalance easily, influences the working effect.

The present invention provides a preferred embodiment of a rotor for an electric machine that solves the above technical problems.

Referring to fig. 1 and fig. 4, fig. 1 is a schematic structural diagram of a first embodiment of a novel rotor sheet of the present invention. Fig. 4 is a schematic structural diagram of the motor rotor of the present invention.

In the drawings, elements having similar structures are denoted by the same reference numerals.

The utility model provides an electric motor rotor, it includes iron core and insulating part, and a plurality of novel rotor punching 1 coincide forms the iron core.

The novel rotor punching sheet 1 comprises a main body portion 11, first convex portions 12 and second convex portions 13, wherein the first convex portions 12 and the second convex portions 13 are distributed on the peripheral side of the main body portion 11, the second convex portions 13 are located between two adjacent first convex portions 12, and the first convex portions 12 are used for winding coil windings.

The plurality of body portions 11 are stacked to form a yoke portion 31, the plurality of first convex portions 12 are stacked to form a tooth portion 32, the plurality of second convex portions 13 are stacked to form a limit convex portion 33, and the insulating member covers axial end faces of the yoke portion 31, the tooth portion 32, and the limit convex portion 33, covers circumferential side surfaces of the yoke portion 31 and the limit convex portion 33, and covers an inner circumferential side surface of the tooth portion 32. The coil windings are wound around the teeth 32 (the coil windings are not shown in the drawings) while being insulated from the core by insulators.

Referring to fig. 1, in the present embodiment, along the radial direction of the novel rotor sheet 1, the width of the second protrusion 13 is gradually reduced, and the width of the outer end of the second protrusion 13 is smaller than the width of the inner end (the width refers to a reference numeral B in fig. 1), which is favorable for the arrangement of the coil winding.

In the present embodiment, each second convex portion 13 is located at the middle position of two adjacent first convex portions 12. So that a very uniform distribution of the coil windings of the respective groups can be limited.

In this embodiment, the two sides of one end of the first protrusion 12, which is far away from the main body 11, are provided with the extending portions 121 extending in the circumferential direction, the second protrusion 13 is located inside the extending portions 121, a fracture is formed between the extending portions 121 of two adjacent main bodies 11, the main body 11 and the fracture have a set winding distance, and the ratio of the length of the second protrusion 13 extending in the radial direction of the novel rotor sheet 1 to the winding distance is between 1/3 and 1/2. The size is moderate, which is beneficial to setting coil winding and can ensure the limit of the coil winding.

In the present embodiment, the main body 11, the first protrusion 12 and the second protrusion 13 are integrally formed

Alternatively, the insulating member may be formed by coating an insulating varnish on the core. The surface of the core to be coated with the insulating varnish can be seen in fig. 5.

In addition, as shown in fig. 5, the insulating member may be an insulating sleeve 41 formed by injection molding.

Referring to fig. 1, the novel rotor sheet 1 may be manufactured as the structure shown in fig. 1, and the second convex portions 13 are disposed between every two adjacent first convex portions 12, that is, the number of the first convex portions 12 is equal to the number of the second convex portions 13. When the iron core of the motor rotor is manufactured, a plurality of novel rotor punching sheets 1 can be overlapped in sequence to form an iron core structure shown in fig. 4.

Alternatively, referring to fig. 3, fig. 3 is a schematic structural diagram of a common rotor sheet. The punching sheet in fig. 1 and the punching sheet in fig. 3 can be mixed and assembled, common rotor punching sheets 2 are arranged between a plurality of novel rotor punching sheets 1 at intervals, and the common rotor punching sheets 2 comprise a main body part 11 and a first convex part 12 which are consistent with the structure of the novel rotor punching sheets 1. Such a construction is less costly.

Still optionally, the novel rotor sheet 1 may also be manufactured as the structure shown in fig. 2. The number of first protrusions 12 is not equal to the number of second protrusions 13 (it is conceivable that three first protrusions 12 may be provided and one second protrusion 13 may be provided in cooperation), the number of first protrusions 12 is larger than the number of second protrusions 13, and a void is formed between two first protrusions 12 if no second protrusion 13 is provided. When the iron core of the motor rotor is manufactured, the second convex parts 13 of the two overlapped adjacent novel rotor punching sheets 1 can be opposite to the vacant positions to form complementation, so that a limited convex part 33 is arranged between every two adjacent tooth parts 32. The cost is lower, and can play better spacing effect to coil winding.

This electric motor rotor's of preferred embodiment iron core is formed by novel rotor punching coincide, and a plurality of first convex parts coincide forms tooth portion, and coil winding is around establishing on tooth portion, and a plurality of second convex parts coincide forms spacing convex part, and spacing convex part can restrict coil winding on the tooth portion, and the structure is more firm for rotor rotates more balanced, has effectively improved job stabilization nature, and work is more silent.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be determined by the scope of the appended claims.

Claims (10)

1. The utility model provides a novel rotor punching, its characterized in that, includes main part, first convex part and second convex part, first convex part with the second convex part all distributes all is in week side of main part, just the second convex part is located adjacent two between the first convex part, first convex part is used for around establishing coil winding.

2. The novel rotor sheet as claimed in claim 1, wherein the width of the second protrusion gradually decreases along the radial direction of the novel rotor sheet, and the width of the outer end of the second protrusion is smaller than the width of the inner end of the second protrusion.

3. The novel rotor sheet as claimed in claim 1, wherein each second protrusion is located at a middle position between two adjacent first protrusions.

4. The novel rotor sheet as claimed in claim 1, wherein two sides of one end of the first protruding portion away from the main body portion extend in a circumferential direction to form an extending portion, the second protruding portion is located inside the extending portion, a fracture is formed between the extending portions of two adjacent main body portions, the main body portion and the fracture are separated by a set winding distance, and a ratio of a length of the second protruding portion extending in a radial direction of the novel rotor sheet to the winding distance is 1/3-1/2.

5. The novel rotor sheet as claimed in claim 1, wherein the main body, the first protrusion and the second protrusion are integrally formed.

6. An electric motor rotor, characterized in that, including iron core and insulator, wherein the iron core includes the novel rotor punching of any one of claims 1-5, a plurality of novel rotor punching coincide, wherein a plurality of the main part coincide forms yoke portion, a plurality of the first convex part coincide forms tooth portion, a plurality of the second convex part coincide forms spacing convex part, the insulator covers yoke portion, tooth portion and the axial terminal surface of spacing convex part, covers yoke portion and the week side surface of spacing convex part, and covers the interior side surface of tooth portion.

7. The electric machine rotor as recited in claim 6, wherein the insulation is an insulating varnish coated on the core.

8. An electric machine rotor as claimed in claim 6, characterised in that the insulation is an injection moulded insulation sleeve.

9. The motor rotor as claimed in claim 6, wherein the second protrusion is disposed between every two adjacent first protrusions, a plurality of the novel rotor sheets are sequentially stacked, or a plurality of the novel rotor sheets are disposed with a common rotor sheet therebetween at intervals, and the common rotor sheet includes a main body portion and a first protrusion consistent with the structure of the novel rotor sheet.

10. The motor rotor as claimed in claim 6, wherein the number of the first convex portions is different from the number of the second convex portions, the number of the first convex portions is greater than the number of the second convex portions, a void is formed between two first convex portions if the second convex portions are not provided, and the second convex portions of two overlapped adjacent novel rotor sheets are opposite to the void to form complementation, so that the limit convex portions are arranged between every two adjacent tooth portions.

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