CN220796395U - External rotor rotary transformer - Google Patents

Abstract

The utility model discloses an outer rotor rotary transformer, comprising: the motor comprises a stator, a rotor, an insulating bracket, a lacquer wire and a stator cover plate; the rotor is arranged on the outer side of the stator, and an air gap is arranged between the rotor and the stator; the stator is arranged in the insulating bracket; the lacquer skin wire is wound on the insulating bracket; the stator cover plate is arranged at one end of the insulating bracket, which is far away from the stator; the stator cover plate is provided with a wire outlet groove, and the lacquer leather wire is wound on the insulating bracket and is led out through the wire outlet groove. The utility model has simple and compact structure, is convenient for assembly, is suitable for angle measurement or an angle sensor, and prevents external dust from entering the inner part of the outer rotor rotary transformer through the stator cover plate so as to prolong the maintenance time limit of the outer rotor rotary transformer without frequent maintenance.

Description

External rotor rotary transformer

Technical Field

The utility model relates to the technical field of rotary transformers, in particular to an outer rotor rotary transformer.

Background

Most of the existing rotary transformers have the rotor inside the stator and a small part of the rotor outside the stator. The external rotor rotary transformer is mainly applied to angle measurement and angle sensors. The existing external rotor rotary transformer is complex in structure, inconvenient to assemble, poor in dustproof effect, easy to enter the inside of the external rotor rotary transformer, and needs to be maintained and cleaned frequently.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide an outer rotor rotary transformer so as to solve the problems of complex structure, inconvenient assembly, poor dustproof effect and frequent maintenance and cleaning of the existing outer rotor rotary transformer.

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

the embodiment of the utility model provides an outer rotor rotary transformer, which comprises: the motor comprises a stator, a rotor, an insulating bracket, a lacquer wire and a stator cover plate; the rotor is arranged on the outer side of the stator, and an air gap is arranged between the rotor and the stator; the stator is arranged in the insulating bracket; the lacquer skin wire is wound on the insulating bracket; the stator cover plate is arranged at one end of the insulating bracket, which is far away from the stator; and the stator cover plate is provided with a wire outlet groove, and the enameled wire is wound on the insulating bracket and is led out through the wire outlet groove.

In one embodiment, the stator includes a yoke end and a plurality of teeth extending outwardly from the yoke end; the insulating bracket includes a bracket body and a plurality of mounting ends extending outwardly from the bracket body; the convex teeth are arranged in the mounting end.

In one embodiment, the enameled wire is wound around the mounting end.

In one embodiment, the mounting end is T-shaped.

In an embodiment, the bracket body is provided with a plurality of wire passing posts along the axial direction of the stator; the wire passing column extends from the bracket main body to a direction far away from the stator and is arranged between two adjacent mounting ends.

In one embodiment, the via post is inverted T-shaped.

In one embodiment, the stator cover plate comprises a cover plate main body and a first annular wall arranged outside the cover plate main body; the first annular wall is detachably connected with the insulating support.

In an embodiment, a first buckle is arranged on the inner side of the first annular wall, a second buckle is arranged on one side, close to the first annular wall, of the mounting end, and the first buckle is connected with the second buckle.

In an embodiment, the stator cover plate further comprises a second annular wall arranged on the inner side of the cover plate main body; the inner diameter of the second annular wall is larger than or equal to the inner diameter of the yoke end, and the outer diameter is smaller than or equal to the inner diameter of the bracket main body.

In an embodiment, the insulating support is provided with two layers, and the two layers of insulating supports are respectively installed at two axial ends of the stator.

Compared with the prior art, the external rotor rotary transformer provided by the utility model has the beneficial effects that: the utility model has simple and compact structure, is convenient for assembly, is suitable for angle measurement or an angle sensor, and prevents external dust from entering the inner part of the outer rotor rotary transformer through the stator cover plate so as to prolong the maintenance time limit of the outer rotor rotary transformer.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an external rotor rotary transformer according to the present utility model;

fig. 2 is a top view of an outer rotor rotary transformer provided by the present utility model;

FIG. 3 is a cross-sectional view of A-A of FIG. 2 provided by the present utility model;

fig. 4 is an exploded view of the outer rotor rotary transformer provided by the present utility model;

fig. 5 is a schematic structural diagram of a stator cover plate provided by the present utility model;

fig. 6 is a schematic structural diagram of an insulating bracket provided by the present utility model;

fig. 7 is a schematic structural diagram of a second insulating bracket according to the present utility model.

Reference numerals:

1. a stator; 11. a yoke end; 12. convex teeth; 2. a rotor; 21. a boss; 3. an insulating support; 31. a holder main body; 32. a mounting end; 321. a handle; 322. a baffle plate portion; 323. a second buckle; 33. a wire passing column; 4. a lacquer leather line; 5. a stator cover plate; 51. a wire outlet slot; 52. a cover plate main body; 53. a first annular wall; 531. a first buckle; 54. and a second annular wall.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and the detailed description, in order to make the objects, technical solutions and advantages of the present utility model more apparent.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be attached, detached, or integrated, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 present utility model. In this specification, schematic representations of the above terms should not be understood as necessarily being directed 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. Furthermore, one skilled in the art can combine and combine the different embodiments or examples described in this specification.

Referring to fig. 1 to 7, the present utility model discloses a specific embodiment of an external rotor rotary transformer, comprising: stator 1, rotor 2, insulating support 3, lacquer skin line 4 and stator cover plate 5; the rotor 2 is arranged on the outer side of the stator 1, and an air gap is arranged between the rotor 2 and the stator 1; the stator 1 is arranged in the insulating bracket 3; the insulated wire 4 is wound on the insulating bracket 3; the stator cover plate 5 is arranged at one end of the insulating bracket 3, which is far away from the stator 1; the stator cover plate 5 is provided with a wire outlet groove 51, and the enameled wire 4 is wound on the insulating bracket 3 and is led out through the wire outlet groove 51.

Specifically, the insulating support 3 is provided with two layers, and the two layers of insulating supports 3 are respectively detachably arranged at two axial ends of the stator 1 and are symmetrically arranged; the stator cover plate 5 is arranged corresponding to the insulating bracket 3 and is detachably arranged with the insulating bracket 3; during assembly, the rotor 2 and the stator 1 are installed in a clearance manner to form an air gap, two layers of insulating supports 3 are installed at two axial ends of the stator 1 respectively, then the insulated wire 4 is wound on the insulating supports 3, namely, the insulating supports 3 are positioned between the insulated wire 4 and the stator 2, and finally, the stator cover plate 5 is installed on the insulating supports 3 and the insulated wire 4 is led out through the wire outlet grooves 51. The utility model has simple and compact structure, is convenient for assembly, is suitable for angle measurement or an angle sensor, and can effectively prevent external dust from entering the inner part of the outer rotor rotary transformer through the stator cover plate 5 so as to prolong the maintenance time limit of the outer rotor rotary transformer.

In one embodiment, the stator 1 includes a yoke end 11 and a plurality of teeth 12 extending outwardly from the yoke end 11, and the paint line 4 is wound around the teeth 12; the insulating holder 3 includes a holder body 31 and a plurality of mounting ends 32 extending outwardly from the holder body 31; the teeth 12 are mounted to the mounting end 32.

Specifically, the enameled wire 4 is wound around the mounting end 32; the mounting end 32 is used for isolating the insulated wire 4 from the teeth 12 to prevent the insulated wire 4 from directly contacting the teeth 12 to generate electric leakage.

In a specific embodiment, the yoke end 11 is annular, the plurality of teeth 12 are uniformly distributed on the outer side of the yoke end 11, and the rotor 2 and the yoke end 11 are concentrically arranged, so that the structure of the outer rotor rotary transformer is more balanced, the magnetic field in the stator 1 is uniformly distributed, and the operation efficiency of the outer rotor rotary transformer is higher.

In one embodiment, the mounting end 32 is T-shaped.

Specifically, the mounting end 32 includes a shank portion 321 and a baffle portion 322; one end of the shank 321 is connected to the holder body 31, and the other end is connected to the baffle portion 322; the lacquer thread 4 is wound on the handle 321 so as to isolate the lacquer thread 4 from the convex teeth 12 and prevent the lacquer thread 4 from directly contacting with the convex teeth 12 to generate electric leakage; the baffle portion 322 is used to prevent the flex 4 from falling off the handle 321.

In one embodiment, the bracket body 31 is provided with a plurality of wire passing posts 33 along the axial direction of the stator 1; the wire passing post 33 extends from the bracket main body 31 in a direction away from the stator 1 and is provided between the adjacent two mounting ends 32.

Specifically, the wire passing post 33 is used to support the insulated wire 4 so as to make the winding of the insulated wire 4 more orderly. More specifically, the enameled wire 4 is wound on one mounting end 32 and then is wound on the other adjacent mounting end 32 through the wire passing column 33, and finally the enameled wire 4 is wound on the complete mounting end 32 and then is led out through the wire outlet groove 51.

In one embodiment, the via 33 is inverted T-shaped.

Specifically, the wire passing post 33 is set to an inverted T shape to strengthen the bottom strength of the wire passing post 33, so that the connection of the wire passing post 33 and the bracket main body 31 is more stable, and simultaneously, the production consumables are reduced to reduce the production cost.

In one embodiment, the stator cover 5 includes a cover body 52 and a first annular wall 53 disposed outside the cover body 52; the first annular wall 53 is detachably connected to the insulating holder 3.

Specifically, the cover main body 52 serves to prevent dust from entering the inside of the outer rotor resolver from the axial direction of the stator 1, and the first annular wall 53 serves to prevent dust from entering the inside of the outer rotor resolver from the outside of the stator 1, to extend maintenance time period of the outer rotor resolver. Meanwhile, the first annular wall 53 is detachably connected with the insulating support 3, so that the outer rotor rotary transformer is convenient to assemble.

More specifically, the outlet groove 51 is provided on the first annular wall 53 to reduce the axial space of the outer rotor resolver, so that the outer rotor resolver is more compact in structure.

In a specific embodiment, a first buckle 531 is disposed on the inner side of the first annular wall 53, and a second buckle 323 is disposed on the side of the mounting end 32 close to the first annular wall 53, where the first buckle 531 and the second buckle 323 are connected.

Specifically, the plurality of first buckles 531 are uniformly distributed on the inner side of the first annular wall 53, and the second buckles 323 are disposed corresponding to the first buckles 531. When assembling, the first buckle 531 and the second buckle 323 are staggered, so that the stator cover plate 5 is sleeved at one end of the insulating bracket 3, which is far away from the stator 1, and then the stator cover plate 5 and the insulating bracket 3 are rotated relatively, so that the first buckle 531 and the second buckle 323 are connected.

In other embodiments, the stator cover plate 5 and the insulating support 3 may be connected by a plurality of detachable connection modes such as threaded connection, riveting, etc.

In one embodiment, the stator cover 5 further includes a second annular wall 54 disposed inside the cover body 52; the second annular wall 54 has an inner diameter equal to or larger than the inner diameter of the yoke end 11 and an outer diameter equal to or smaller than the inner diameter of the holder main body 31.

Specifically, the bottom of the second annular wall 54 directly contacts the yoke end 11, and the insulating holder 3 is located between the first annular wall 53 and the second annular wall 54, and the yoke end 11 and the second annular wall 54 are closed to prevent dust from entering the inside of the outer rotor resolver from the inside of the stator 1, to extend maintenance time period of the outer rotor resolver.

In a specific embodiment, the stator cover plate 5 and the insulating bracket 3 are made of insulating materials such as plastics and rubber, so as to prevent leakage accidents and improve the use safety of the external rotor rotary transformer.

Preferably, the cover main body 52, the first annular wall 53 and the second annular wall 54 are integrally formed, and the bracket main body 31, the mounting end 32 and the wire passing post 33 are integrally formed, so that mass production is facilitated.

In a specific embodiment, the outer side of the rotor 2 is provided with a protruding portion 21, and the protruding portion 21 is used for connecting the rotor 2 with a device to be tested (e.g. a motor).

The foregoing embodiments are preferred embodiments of the present utility model, and in addition, the present utility model may be implemented in other ways, and any obvious substitution is within the scope of the present utility model without departing from the concept of the present utility model.

Claims (10)

1. An external rotor rotary transformer, comprising: the motor comprises a stator, a rotor, an insulating bracket, a lacquer wire and a stator cover plate; the rotor is arranged on the outer side of the stator, and an air gap is arranged between the rotor and the stator; the stator is arranged in the insulating bracket; the lacquer skin wire is wound on the insulating bracket; the stator cover plate is arranged at one end of the insulating bracket, which is far away from the stator; and the stator cover plate is provided with a wire outlet groove, and the enameled wire is wound on the insulating bracket and is led out through the wire outlet groove.

2. The outer rotor resolver according to claim 1, wherein the stator includes a yoke end and a plurality of teeth extending outwardly from the yoke end; the insulating bracket includes a bracket body and a plurality of mounting ends extending outwardly from the bracket body; the convex teeth are arranged in the mounting end.

3. The outer rotor resolver according to claim 2, wherein the lacquer skin wire is wound around the mounting end.

4. The outer rotor resolver according to claim 3, wherein the mounting end is T-shaped.

5. The outer rotor resolver according to claim 2, wherein the bracket main body is provided with a plurality of wire passing posts in an axial direction of the stator; the wire passing column extends from the bracket main body to a direction far away from the stator and is arranged between two adjacent mounting ends.

6. The outer rotor resolver according to claim 5, wherein the wire passing post is inverted T-shaped.

7. The outer rotor resolver according to claim 3, wherein the stator cover includes a cover main body and a first annular wall provided outside the cover main body; the first annular wall is detachably connected with the insulating support.

8. The outer rotor resolver according to claim 7, wherein a first buckle is provided on an inner side of the first annular wall, a second buckle is provided on a side of the mounting end close to the first annular wall, and the first buckle and the second buckle are connected.

9. The outer rotor resolver according to claim 7, wherein the stator cover plate further includes a second annular wall provided inside the cover plate main body; the inner diameter of the second annular wall is larger than or equal to the inner diameter of the yoke end, and the outer diameter is smaller than or equal to the inner diameter of the bracket main body.

10. The external rotor resolver according to claim 1, wherein the insulating bracket is provided with two layers, and the two layers of the insulating bracket are respectively installed at both axial ends of the stator.