Rotary transformer stator

Abstract

The rotary transformer stator comprises a stator framework, a stator core and a connector, the stator framework is in a hollow ring shape, the stator core is hooped on the outer wall of the stator framework, the connector is located on one side of the stator core, and the connector is connected to the outer wall of the stator framework and extends in the axial direction of the stator framework. The surface, facing the axis of the stator framework, of the connector is provided with the protruding binding posts, the multiple binding posts are arranged in parallel at intervals, the design that the connector extends outwards in the radial direction of the stator framework is abandoned, the structure is novel, the radial space can be saved, meanwhile, one side, facing the axis of the stator framework, of each binding post can be isolated from the outside through the connector, and the service life of the stator framework is prolonged. A cover plate is not needed, and the binding post can be prevented from being collided to be inclined.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rotating transformer technical field, concretely relates to a rotating transformer stator of radial space can be saved. BACKGROUND

[0002] Rotating transformer is a kind of commonly used speed feedback element, and similar to it also has magnetic encoder, hall speed sensor, from the function, the three can complete the function of speed feedback, but magnetic encoder is not high due to code disc protection level, easily broken, maintenance frequency is high;Hall speed sensor is cheap, but when position signal mutation, there is larger estimated error, low resolution, make that control precision is limited, and the magnetism of hall element can weaken after long time heat, so service life is not long;And rotating transformer is separated due to rotor and stator, no contact, adopts brushless design, has very high protection level, can resist high-intensity vibration, is not afraid of water and oil dirt, service life can be as long as several decades, and is widely applied to various occasions needing speed feedback.

[0003] The stator of common rotating transformer as shown in Figure 1 It includes stator framework 10, stator core 20, connector 30, stator framework 10 is hollow annular, stator core 20 is clamped on the outer wall of stator framework 10, connector 30 is connected on the outer wall of stator framework 10 and extends outward along the radial direction of stator framework 10, when installing, it needs to occupy certain radial space, when being applied to large-size motor or the requirement of application scene to radial space is not high, this kind of occupation basically does not produce influence, but for certain small-size motor or the requirement of application scene (such as satellite, aircraft etc.) to radial space is high, this kind of occupation is difficult to be accepted, thus, a rotating transformer stator of radial space can be saved is needed to be designed to expand the application range of rotating transformer. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the shortcomings of prior art, provide a kind of novel structure, rotating transformer stator of radial space can be saved.

[0005] To achieve the above object, the technical scheme of the utility model is that the product is, rotating transformer stator, including:

[0006] Stator framework, the stator framework is hollow annular;

[0007] Stator core, the stator core is clamped on the outer wall of the stator framework;

[0008] Connector, the connector is located in one side of the stator core;

[0009] The connector is connected to the outer wall of the stator frame and extends along the axial direction of the stator frame, and the surface of the connector facing the axial line of the stator frame is provided with protruding connecting posts, and the connecting posts are multiple and arranged in parallel and at intervals.

[0010] Preferably, the projection of the connector in the axial direction of the stator frame is an arc-shaped area, and the center of the arc-shaped area is located on the extension line of the axial line of the stator frame.

[0011] Further preferably, the surface of the connector away from the axial line of the stator frame is flush with the outer wall surface of the stator core.

[0012] Further preferably, the length of the connecting posts located on both sides is greater than the length of the connecting posts located in the middle position.

[0013] Further preferably, the end surfaces of all the connecting posts are equidistant from the axial line of the stator frame.

[0014] Preferably, the connector and the winding post on the stator frame are located on the same side of the stator core.

[0015] Further preferably, the winding posts located below the connecting posts are at least two, and the heights of the two winding posts are greater than the heights of the winding posts at other positions.

[0016] Preferably, the connector is integrally injection molded with the stator frame.

[0017] Thanks to the above technical scheme, the utility model has the following advantages compared with the prior art:

[0018] The utility model provides a rotary transformer stator, it includes: stator frame, stator core, connector, stator frame is hollow annular, stator core hoop is located on the outer wall of stator frame, and the connector is located at one side of stator core, by making the connector connect in the outer wall of stator frame and extend along the axial direction of stator frame, the surface of the connector facing the axial line of stator frame is provided with protruding connecting post, makes connecting post multiple and parallel interval arrangement, abandoned the design of the connector extending radially outward along the stator frame, novel structure, can save radial space, simultaneously, connecting post faces the side of the axial line of stator frame, can utilize the connector and external isolation, need not set up cover plate, also can avoid connecting post and be knocked askew. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the three-dimensional schematic view of the rotary transformer stator in the prior art.

[0020] Figure 2 It is the three-dimensional schematic view of the preferred embodiment of the utility model.

[0021] Figure 3 is Figure 2 a top view schematic diagram.

[0022] Figure 4 is Figure 2 an assembly exploded schematic diagram.

[0023] Wherein: 10. Stator skeleton; 11. Winding post; 20. Stator core; 30. Connector; 31. Terminal post; 32. Solder pad. DETAILED DESCRIPTION

[0024] As Figures 2 to 4 shown, the resolver stator provided by the utility model, comprising: stator skeleton 10, stator core 20, connector 30, wherein, stator skeleton 10 is hollow annular, stator core 20 is formed by the lamination of multiple silicon steel sheets, stator core 20 is hoop set on the outer wall of stator skeleton 10, specifically, stator core 20 is integrally formed with stator skeleton 10 by the way of embedding injection molding; connector 30 is located at one side of stator core 20, connector 30 is integrally injection molded with stator skeleton 10, connector 30 is connected on the outer wall of stator skeleton 10 and extends along the axial direction of stator skeleton 10, the surface of connector 30 towards the axial line of stator skeleton 10 is provided with protruding terminal post 31, terminal post 31 is multiple and is arranged in parallel and interval, terminal post 31 is formed by one end of L-shaped metal embedded part, the other end of the embedded part forms solder pad 32.

[0025] The advantage of such arrangement is that the existing connector extending radially outward along the stator skeleton can be abandoned, the structure is novel, the radial space can be saved, at the same time, the terminal post is towards the side of the axial line of the stator skeleton, the connector can be isolated from the outside, without the need to set the cover plate, and the terminal post can also be prevented from being knocked out of shape.

[0026] In the embodiment, the projection of connector 30 in the axial direction of stator skeleton 10 is an arc-shaped area, the center of the arc-shaped area is located on the extension line of the axial line of stator skeleton 10, further, the surface of connector 30 away from the axial line of stator skeleton 10 is flush with the outer wall surface of stator core 20, such arrangement can maximize the use of radial space, and facilitate the strength design of connector 30 itself.

[0027] For the convenience of wiring, the length of terminal post 31 located at both sides is greater than the length of terminal post 31 located at the middle position, further, the distance of the end surface of all terminal posts 31 from the axial line of stator skeleton 10 is equal.

[0028] In the embodiment, connector 30 and winding post 11 on stator skeleton 10 are located on the same side of stator core 20, further, the winding post 11 located below terminal post 31 is two, the height of the two winding posts 11 is greater than the height of winding post 11 at other positions.

[0029] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A resolver stator, comprising: a stator frame, which is hollow and ring-shaped; a stator core, which is wrapped around the outer wall of the stator frame; a connector, which is located on one side of the stator core; characterized in that: the connector is connected to the outer wall of the stator frame and extends in the axial direction of the stator frame, the surface of the connector facing the axial centerline of the stator frame is provided with protruding terminal posts, and the terminal posts are multiple and arranged in parallel at intervals.

2. The resolver stator of claim 1, characterized in that: The projection of the connector in the axial direction of the stator frame is an arc-shaped area, and the center of the arc-shaped area is located on the extension line of the axial centerline of the stator frame.

3. The resolver stator of claim 2, characterized by: The surface of the connector away from the axial centerline of the stator frame is flush with the outer wall surface of the stator core.

4. The resolver stator of claim 2, characterized by: The length of the terminal posts located on both sides is greater than the length of the terminal posts located in the middle position.

5. The resolver stator of claim 4, characterized by: The end surfaces of all the terminal posts are equidistant from the axial centerline of the stator frame.

6. The resolver stator of claim 1, wherein: The connector and the winding posts on the stator frame are located on the same side of the stator core.

7. The resolver stator of claim 6, characterized in that: The winding posts located below the terminal posts are at least two, and the heights of the two winding posts are greater than the heights of the winding posts at other positions.

8. The resolver stator of claim 1, wherein: The connector and the stator frame are integrally injection molded.

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