CN217789425U - EPS brushless motor automatic rotor offset angle adjusting structure - Google Patents

Abstract

The utility model relates to a structure of EPS brushless motor automatic adjustment rotor off-set angle, including the rotor shaft, iron core and magnet, the iron core becomes the three-section, all be equipped with off-set regulation haplopore and off-set regulation diplopore on every section iron core, and the quantity of off-set regulation haplopore and off-set regulation diplopore on the three-section iron core, the position is all the same, the three-section iron core is upper iron core stromatolite respectively, middle iron core stromatolite and lower floor's iron core stromatolite, the off-set on the upper iron core stromatolite is adjusted in the diplopore counter clockwise's hole and middle iron core stromatolite off-set regulation haplopore and is aligned, clockwise's hole and middle iron core stromatolite off-set regulation haplopore are adjusted in the off-set on the lower floor's iron core stromatolite, make three-section iron core form the off-set. The utility model discloses can be at automatic assembly in-process, quick and accurate locking rotor offset angle can improve the efficiency of debugging angle to let the installation of multilayer iron core stromatolite more simple.

Description

EPS brushless motor automatic adjustment rotor offset angle's structure

Technical Field

The utility model relates to an electric motor rotor technical field, more specifically say, relate to a EPS brushless motor automatic adjustment rotor off-set angle's structure.

Background

The EPS brushless motor rotor is composed of a rotor core lamination, a magnet, a rotor shaft and a rotor protection sleeve, wherein the three layers of the rotor core lamination are fixed on the shaft, and the magnet is located at a rotor core notch and is fixed by glue. Meanwhile, the three layers of rotor core laminations need a certain offset angle to reduce the cogging torque, so that the effects of reducing electromagnetic vibration and noise are achieved. In the existing automatic assembly process, if the offset angle of the rotor needs to be met, the corresponding precision can be achieved only by continuously adjusting the laminated angle, and the angle cannot be determined quickly. The defects and shortcomings of the prior art are as follows: the angle precision of the existing rotor assembly process is not well controlled; the rotor offset angle is not easy to debug and the iron core lamination installation efficiency is low.

Chinese patent CN213461284 discloses a rotor punching sheet, a rotor core, a rotor, a motor and an electrical appliance, wherein a first fastening wedge and a second fastening wedge are disposed on the rotor punching sheet, so that the rotor punching sheet can deflect without ensuring good engagement between the upper and lower layers of rotor punching sheets. However, the rotor punching sheet is processed with the fastening wedge, so that the processing of the rotor punching sheet is more complicated, and the overall strength of the rotor punching sheet is reduced.

Disclosure of Invention

In order to solve the technical problem, an object of the utility model is to provide a EPS brushless motor automatic adjustment rotor off-set angle's structure, this simple structure, processing is convenient, and can improve assembly efficiency.

In order to achieve the purpose of the invention, the utility model adopts the following technical scheme:

the iron core is fixed on the rotor shaft and is in interference fit with the rotor shaft, the magnets are fixed on the outer side of the iron core, the iron core is divided into three sections, each section of the iron core is provided with a single offset adjusting hole and two offset adjusting holes at intervals around the circumference, the number and the positions of the single offset adjusting holes and the two offset adjusting holes in the three sections of the iron core are the same, the three sections of the iron core are respectively an upper iron core lamination, a middle iron core lamination and a lower iron core lamination, a hole in the double offset adjusting holes in the upper iron core lamination in the anticlockwise direction is aligned with the single offset adjusting hole in the middle iron core lamination, and a hole in the double offset adjusting holes in the lower iron core lamination in the clockwise direction is aligned with the single offset adjusting hole in the middle iron core lamination, so that the three sections of the iron core form offset.

As a preferable scheme: the offset adjusting single hole and the offset adjusting double hole are two, and the offset adjusting single hole and the offset adjusting double hole are alternately arranged at intervals in an equidistant mode around the circumference.

As a preferable scheme: the iron core is further provided with iron core through holes, and the offset adjusting single hole and the offset adjusting double holes are arranged between the two iron core through holes and are close to the outer side.

As a preferable scheme: and the outer side of the iron core is also provided with two magnetic protection rings which are respectively sleeved on the upper side and the lower side of the iron core, and a gap is reserved between the two magnetic protection rings.

As a preferable scheme: the magnet is a plurality of, and a plurality of magnet equidistance interval cards are established on the lateral wall of iron core, and the lateral wall of magnet becomes the cambered surface.

As a preferable scheme: the iron core through-hole is a plurality of, and a plurality of iron core through-holes are around circumference equidistance interval evenly distributed, the iron core through-hole becomes triangle-shaped or trapezoidal.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a set up the biasing and adjust the haplopore and the biasing adjusts the diplopore and make corresponding core section biasing adjust convenient more, quick and accurate on rotor core, the utility model discloses can be at automatic assembly in-process, quick and accurate locking rotor offset angle can improve the efficiency of debugging angle to let the installation of multilayer iron core stromatolite more simple. In the later-stage angle detection, whether the offset angle of the rotor core is correct or not can be judged only by confirming the position of the through hole of the laminated three-layer core.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

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

fig. 2 is a schematic side view of the present invention;

FIG. 3 isbase:Sub>A cross-sectional view A-A of FIG. 2;

fig. 4 is a schematic end-face structure diagram of the present invention;

fig. 5 is a schematic view of an assembly structure of the rotor shaft, the iron core and the magnetic protection ring of the present invention;

fig. 6 is an assembly structure diagram of the rotor shaft and the upper iron core lamination, the middle iron core lamination and the lower iron core lamination of the present invention.

The labels in the figures are: 1. a rotor shaft; 21. an upper iron core lamination; 22. laminating the middle iron cores; 23. laminating the lower iron core; 3. a magnet; 4. protecting a magnetic ring; 5. a bias adjusting single hole; 6. a bias adjusting double hole; 7. and the iron core is provided with a through hole.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Furthermore, in the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but 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, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. 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 invention will be further explained with reference to the following embodiments and drawings:

as shown in fig. 1 to 6, the structure for automatically adjusting the offset angle of the rotor of the EPS brushless motor includes a rotor shaft 1, an iron core and a magnet 3, wherein the iron core is fixed on the rotor shaft 1 and is in interference fit with the rotor shaft 1, the magnet 3 is fixed on the outer side of the iron core, the iron core is divided into three sections, each section of the iron core is provided with offset adjusting single holes 5 and offset adjusting double holes 6 at intervals around the circumference, the number and the position of the offset adjusting single holes 5 and the offset adjusting double holes 6 on the three sections of the iron core are the same, the three sections of the iron core are respectively an upper iron core lamination 21, a middle iron core lamination 22 and a lower iron core lamination 23, a hole in the counter-clockwise direction in the offset adjusting double holes 6 on the upper iron core lamination 21 is aligned with the offset adjusting single holes 5 of the middle iron core lamination 22, and a hole in the clockwise direction in the offset adjusting double holes 6 on the lower iron core lamination 23 is aligned with the offset adjusting single holes 5 of the middle iron core lamination 22, so that the three sections form offset.

The position of the offset adjusting single hole 5 is located at the right center of the axis, two holes of the offset adjusting double holes 6 are symmetrically arranged, and the positions of the holes can be determined according to the offset angle of the rotor. During assembly, the intermediate core stack 22 is pressed into a position corresponding to the rotor shaft. After the middle iron core lamination 22 is installed in place, positioning pins are inserted by taking a single hole as a reference, and the upper iron core lamination 21 and the lower iron core lamination 23 are positioned by using symmetrical double holes. When the upper-layer iron core lamination 21 and the lower-layer iron core lamination 23 are installed, the symmetrical double-hole positions of the upper layer and the lower layer are adjusted by using the positioning pin located in the single hole of the middle layer, and finally the requirements of the upper-layer rotor iron core assembly, the lower-layer rotor iron core assembly and the middle layer on the offset angle are met.

The offset adjusting single hole 5 and the offset adjusting double hole 6 are both two, and the offset adjusting single hole 5 and the offset adjusting double hole 6 are alternately arranged at intervals at equal intervals around the circumference. Iron core through holes 7 are further formed in the iron core, and the offset adjusting single hole 5 and the offset adjusting double holes 6 are both arranged between the two iron core through holes 7 and are close to the outer side. The iron core through holes 7 are multiple, the iron core through holes 7 are evenly distributed around the circumference at equal intervals, and the iron core through holes 7 are triangular or trapezoidal.

Magnet 3 is a plurality of, and 3 equidistance interval cards of a plurality of magnets are established on the lateral wall of iron core, and the lateral wall of magnet 3 becomes the cambered surface. The outer side of the iron core is further provided with two magnetic protection rings 4, the two magnetic protection rings 4 are respectively sleeved on the upper side and the lower side of the iron core, and a gap is reserved between the two magnetic protection rings 4.

The technical scheme in the embodiment mainly solves the problem that the multilayer rotor core lamination cannot be centered quickly in the EPS brushless motor rotor assembling process; the offset angle of the rotor is not well determined after the overlapping and splicing; the rotor is not assembled well; the assembly work efficiency is low; poor measurement of the assembly clearance angle and the like. The laminated offset angle of the three layers of rotor cores can be quickly locked, and the assembly precision and efficiency are improved.

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, structure, 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 do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that various changes, modifications, substitutions and alterations of the above embodiments, which are made by the technical spirit of the present invention without departing from the spirit and scope of the present invention, are also within the scope of the technical solution of the present invention.

Claims (6)

1. The utility model provides a structure of EPS brushless motor automatic adjustment rotor biasing angle, includes rotor shaft (1), iron core and magnet (3), the iron core is fixed on rotor shaft (1), and with rotor shaft (1) interference fit, the outside at the iron core is fixed in magnet (3), its characterized in that: the iron core is divided into three sections, each section of iron core is provided with a single offset adjusting hole (5) and a double offset adjusting hole (6) at intervals around the circumference, the number and the positions of the single offset adjusting holes (5) and the double offset adjusting holes (6) on the three sections of iron core are the same, the three sections of iron core are respectively an upper iron core lamination (21), a middle iron core lamination (22) and a lower iron core lamination (23), a hole in the double offset adjusting holes (6) on the upper iron core lamination (21) in the anticlockwise direction is aligned with the single offset adjusting holes (5) of the middle iron core lamination (22), a hole in the double offset adjusting holes (6) on the lower iron core lamination (23) in the clockwise direction is aligned with the single offset adjusting holes (5) of the middle iron core lamination (22), and the three sections of iron core are enabled to form offset.

2. The structure of an EPS brushless motor for automatically adjusting the offset angle of the rotor according to claim 1, wherein: the offset adjusting single hole (5) and the offset adjusting double hole (6) are two, and the offset adjusting single hole (5) and the offset adjusting double hole (6) are alternately arranged at intervals in an equidistant mode around the circumference.

3. The structure of an EPS brushless motor for automatically adjusting the offset angle of the rotor according to claim 1, wherein: iron core through holes (7) are further formed in the iron core, and the single offset adjusting hole (5) and the double offset adjusting hole (6) are arranged between the two iron core through holes (7) and are close to the outer side.

4. The structure of an EPS brushless motor for automatically adjusting the offset angle of the rotor according to claim 1, wherein: the magnetic protection rings (4) are further arranged on the outer side of the iron core, the two magnetic protection rings (4) are respectively sleeved on the upper side and the lower side of the iron core, and a gap is reserved between the two magnetic protection rings (4).

5. The structure of an EPS brushless motor for automatically adjusting the offset angle of the rotor according to claim 1, wherein: magnet (3) are a plurality of, and a plurality of magnet (3) equidistance interval card is established on the lateral wall of iron core, and the lateral wall of magnet (3) becomes the cambered surface.

6. The structure of an EPS brushless motor for automatically adjusting the offset angle of the rotor according to claim 3, wherein: the iron core through holes (7) are multiple, the iron core through holes (7) are evenly distributed around the circumference at equal intervals, and the iron core through holes (7) are triangular or trapezoidal.

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