CN216016552U - Motor stator without insulation paper - Google Patents

Abstract

The utility model discloses a motor stator without insulation paper, which comprises a stator core, wherein an insulation protective sleeve is fixed on the stator core, the shape of the insulation protective sleeve is matched with that of the stator core, the insulation protective sleeve uniformly extends out of an inner concave tooth part from a circumferential inner ring, a gap between every two inner concave tooth parts forms an insulation protective sleeve groove part, the inner concave tooth part of the insulation protective sleeve can just wrap the stator core tooth part, a convex buckle is arranged on the inner wall of the inner concave tooth part of the insulation protective sleeve, and the buckle can clamp the stator core so that the insulation protective sleeve is fastened on the stator core. The novel insulating protective sleeve is simple and convenient to install and reliable in fixation.

Description

Motor stator without insulation paper

Technical Field

The utility model belongs to the field of production and manufacturing of motors, and particularly relates to a motor stator without insulating paper.

Background

An electric motor (commonly called "motor") refers to an electromagnetic device for converting or transmitting electric energy according to the law of electromagnetic induction, and its main function is to generate driving torque as a power source for electrical appliances or various machines. The common motor is composed of a stator, a rotor and other accessories, wherein the stator mainly comprises a stator core, a stator winding and a base, the stator is used for generating a rotating magnetic field, the stator winding refers to a winding arranged on the stator core, namely a copper coil wound on the stator core, and the stator winding and the stator core are separated by insulating paper. The insulating paper is required to have good insulating property and certain mechanical strength, and also to have high toughness and easy insertion. In the insertion process of the insulating paper, the insulating paper is automatically inserted into the empty slot of the motor stator by manpower or machines, and the insulating slot in the whole stator iron core is fully inserted.

In the actual production process, if the insulation paper is not skilled or scratched during insertion, the insulation paper can be damaged; the stator iron core is protruded or has sharp pricks and the like which can damage the insulating paper to cause short circuit; in addition, the temperature resistance of the insulating paper also influences the service life of the stator. Therefore, the production process of separating the stator core from the stator winding by using the insulating paper has a plurality of technical problems.

The utility model discloses an insulating protective sleeve of a motor stator (CN201010539722.6), which comprises a stator shaft sleeve, an upper end mask, a lower end mask and a hollow groove, wherein the shapes of the upper end mask and the lower end mask are matched with the contact part of a stator body, the insulating protective sleeve is molded by opening a die according to the shapes of all parts of the stator body, the insulating protective sleeve is molded by injection according to the die opening, an insulating paper sheet required to be filled in each groove in the prior art is replaced, the insulating protective sleeve is divided into an upper end mask and a lower end mask (namely the upper insulating protective sleeve and the lower insulating protective sleeve), and the upper end mask and the lower end mask are closed and filled in a stator core. The stator core is covered by the upper and lower insulating protective sleeves to replace insulating paper, so that the technical problem in the prior art is solved. However, the upper and lower insulating protective sleeves are relatively complicated to install, and the insulating protective sleeves are not fixed by buckles after installation, so that the insulating protective sleeves are easy to loosen.

Disclosure of Invention

Aiming at the defects existing in the prior art, the technical problems to be solved by the utility model are as follows: the motor stator without the insulation paper is convenient to install and firm to fix.

In order to solve the technical problems, the utility model is realized by the following technical measures: the utility model provides a motor stator of no insulating paper, includes the stator core of the circumference shape as basic supporting, stator core's inner circle extends stator core tooth portion uniformly, and the clearance between two tooth portions forms the stator core slot part, wherein, is fixed with insulating protective sheath on stator core, insulating protective sheath's appearance with stator core's appearance is identical, insulating protective sheath extends concave tooth portion from the inner circle of circumference shape uniformly, and the clearance between per two concave tooth portions forms insulating protective sheath slot part, insulating protective sheath's concave tooth portion can just wrap stator core tooth portion be equipped with convex buckle on insulating protective sheath's the inner wall of concave tooth portion, the buckle can block stator core, makes insulating protective sheath fastening be in on the stator core.

Compared with the prior art, the utility model has the advantages that: through an insulating protective sheath, just wrap insulating protective sheath's interior concave tooth portion stator core tooth portion recycles the buckle from taking above the interior wall of insulating protective sheath's interior concave tooth portion, just can block stator core to prevent copper line on the stator winding and stator core's direct contact, stopped the short circuit hidden danger. The production process that traditional with insulated paper or separate stator core with upper and lower two insulating protective sheaths has been replaced, and this kind of neotype insulating protective sheath, the installation is simple and convenient, and is fixed reliable.

Preferably, the buckle is arranged on the inner wall of the concave tooth part of the insulation protective sleeve close to one third of the outer edge. The purpose of selecting the design is as follows: being close to the supporting stuck point of outward flange one third department, fixed effect is better because the outer lane of the circumference shape of insulating protective sheath tightly supports stator core's yoke portion (being stator core's inner circle) tightly, in addition the buckle, it is fixed simultaneously to form the point face, and fixed effect is better.

Preferably, the buckle is a wedge-shaped structure, the length of the bottom edge of the wedge-shaped structure is equal to half of the length of the bevel edge, and the length of the bottom edge is between 0.8mm and 1.2 mm. The purpose of selecting the design is as follows: the shape of the wedge-shaped structure is easy to install and fix, the bottom edge of the buckle is too short to be clamped easily and can fall out, but the bottom edge of the buckle cannot be too long and is too long to be installed easily, so that the shape of the wedge-shaped structure is required to be within a certain range of 0.8mm-1.2 mm.

Preferably, the distance F between the buckle and the bottom of the insulating protective sleeve is equal to the thickness of the stator core. The purpose of selecting the design is as follows: the bottom distance F between the buckle and the insulating protective sleeve is just the thickness of the stator core, so that the buckle is clamped in and then just presses the stator core, no gap exists in the middle of the stator core, the stator core cannot loosen, and the effect of fixing the stator core by the insulating protective sleeve is good.

Preferably, the distance G between the insulation protection sleeve and the stator core is greater than 4 mm. The purpose of selecting the design is as follows: because the concave tooth portion of the insulating protective sleeve is provided with an opening, when the tooth portion of the stator core is wrapped by the concave tooth portion, the opening can be reserved, so that a copper wire of the stator winding is not contacted with the stator core, the insulating protective sleeve is higher than a gap of at least 4mm of the stator core, and the copper wire is ensured not to be contacted with the stator core.

Preferably, the material of the insulating protective sleeve is PA or PPS or nylon. The purpose of selecting the design is as follows: the PA or PPS or nylon and other materials have good insulating property, low cost and certain toughness, and the action of clamping is finished by certain deformation in the process of clamping the buckle.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is an installation diagram of a stator core and an insulating protective sleeve according to the present invention.

Fig. 2 is a diagram of a stator core according to the present invention.

Fig. 3 is a perspective view of the insulating protective sheath of the present invention.

Fig. 4 is a bottom view of the insulating protective sheath of the present invention.

FIG. 5 is an enlarged view of section A of the present invention.

Fig. 6 is an enlarged view of the portion B according to the present invention.

FIG. 7 is a view of the snap attachment of the present invention.

Description of reference numerals: 1. a stator core; 2. an insulating protective sleeve; 3. a stator core tooth portion; 4. a stator core slot portion; 5. an inner concave tooth portion; 6. an insulating protective sleeve groove part; 7. and (5) buckling.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

Example 1

Referring to fig. 1-7, an insulation paper-free motor stator is composed of a stator core 1, insulation protection sleeves 2, and stator windings, wherein 18 stator core tooth portions 3 uniformly extend from an inner ring of the stator core 1, a gap between every two tooth portions forms a stator core slot portion 4, and 17 stator core slot portions 4 are counted, wherein an insulation protection sleeve 2 is fixed on the stator core 1, the shape of the insulation protection sleeve 2 is matched with the shape of the stator core 1, 18 concave tooth portions 5 uniformly extend from the circumferential inner ring of the insulation protection sleeve 2, a gap between every two concave tooth portions 5 forms an insulation protection sleeve slot portion 6, and 17 insulation protection sleeve slot portions 6 are counted, and the 18 concave tooth portions 5 of the insulation protection sleeve 2 respectively and correspondingly wrap the 18 stator core tooth portions 3.

Referring to fig. 3 to 4, the insulating sheath 2 is a circular shape, and the outer circumference thereof is slightly smaller than the inner circumference of the stator core 1, and after being wrapped, it can be fully abutted against the stator core 1.

Referring to fig. 5-6, wherein a convex buckle 7 is arranged on the inner wall of the concave tooth part 5 of the insulation protection sleeve 2, in the embodiment, four concave tooth parts 5 (see fig. 4) are selected from 18 concave tooth parts 5, and the buckle 7 is arranged on the four concave tooth parts. Of course, it is also possible to choose to provide the catches 7 on all the female teeth 5, which would be better, but would be inconvenient for installation, so a compromise is chosen in this embodiment.

In the present embodiment, the snap 7 is arranged on the inner wall of the inner concave toothing 5 of the insulating sheath 2 near the outer edge third. The outer lane of the circumference shape of insulating protective sheath 2 tightly supports yoke portion (being stator core 1's inner circle) of stator core 1, and buckle 7 is the wedge structure, and the base length of wedge structure equals half of hypotenuse length, and the base length of buckle 7 is 1 mm.

In the present embodiment, the distance F between the buckle 7 and the bottom of the insulating sheath 2 is equal to the thickness of the stator core 1. That is, the vertical distance from the bottom edge of the clip 7 to the bottom surface of the insulating sheath 2 is the same as the thickness of the stator core 1.

Specifically, referring to fig. 7, the distance G from the insulating sheath 2 to the stator core 1 is greater than 4 mm. When installing the copper line on the stator winding like this, can guarantee to have a safety clearance, because insulation protective sheath 2's interior concave tooth portion 5 has an open-ended, when stator core tooth portion 3 wraps, it can reserve this an opening, for the copper line that does not let stator winding contacts with stator core 1, insulation protective sheath 2 will exceed stator core 1 at least 4 mm's space, just can guarantee that the copper line does not contact with stator core 1.

Specifically, the material of the insulating protective sheath 2 is nylon. In this embodiment, it is mainly considered that the insulating property of the nylon material is relatively good and the cost is low, and the nylon material has certain toughness, so that the nylon material can be smoothly buckled when the insulating protective sleeve 2 is installed.

When the motor stator without the insulation paper provided by the embodiment is installed, the stator core tooth part 3 is completely fixed only by pressing the concave tooth part 5 of the insulation protective sleeve 2 into the buckle 7; if the insulating protective sleeve 2 needs to be detached, the buckle 7 is pried open, and then the insulating protective sleeve 2 can be separated.

The motor stator of no insulated paper that this embodiment provided, through an insulating protective sheath, just wraps insulating protective sheath's interior concave tooth portion stator core tooth portion recycles the buckle from the area above the interior concave tooth portion's of insulating protective sheath inner wall, just can block stator core to prevent copper line on the stator winding and stator core's direct contact, stopped the short circuit hidden danger. The production process that traditional with insulated paper or separate stator core with upper and lower two insulating protective sheaths has been replaced, and this kind of neotype insulating protective sheath, the installation is simple and convenient, and is fixed reliable.

The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the scope of the utility model as defined by the independent claims are intended to be embraced therein.

Claims (6)

1. An insulation paper-free motor stator, comprising a circumferential stator core (1) as a base support, the inner ring of the stator core (1) extending uniformly over stator core teeth (3), the gap between two teeth forming a stator core slot (4), characterized in that: be fixed with insulating protective sheath (2) on stator core (1), the appearance of insulating protective sheath (2) with the appearance of stator core (1) is identical, insulating protective sheath (2) evenly extends interior concave tooth portion (5) from the inner circle of circumference shape, and clearance between per two interior concave tooth portions (5) forms insulating protective sheath slot part (6), interior concave tooth portion (5) of insulating protective sheath (2) can just wrap stator core tooth portion (3) be equipped with convex buckle (7) on the inner wall of interior concave tooth portion (5) of insulating protective sheath (2), buckle (7) can block stator core (1), make insulating protective sheath (2) fasten on stator core (1).

2. The motor stator without insulation paper of claim 1, wherein: the buckle (7) is arranged on the inner wall of the concave tooth part (5) of the insulating protective sleeve (2) close to one third of the outer edge.

3. The motor stator without insulation paper of claim 1, wherein: the buckle (7) is of a wedge-shaped structure, the length of the bottom edge of the wedge-shaped structure is equal to half of the length of the bevel edge, and the length of the bottom edge is between 0.8mm and 1.2 mm.

4. The motor stator without insulation paper of claim 1, wherein: the distance F between the buckle (7) and the bottom of the insulating protective sleeve (2) is equal to the thickness of the stator core (1).

5. The motor stator without insulation paper of claim 1, wherein: and the distance G from the insulating protective sleeve (2) to the stator core (1) is greater than 4 mm.

6. The motor stator without insulation paper of claim 1, wherein: the insulating protective sleeve (2) is made of PA or PPS or nylon.

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