Stator assembly for rotary transformer

Abstract

The utility model discloses a stator assembly for a rotary transformer. The stator assembly comprises a stator iron core, an insulating framework, a leading-out wire structure and a fixing part, the insulating framework wraps the stator core, a groove is formed in the outer periphery of the stator core, the outgoing line structure is formed on the insulating framework, the fixing part is arranged in the groove, one end of the fixing part is fixedly connected with the outgoing line structure, and the other end of the fixing part is fixedly connected with the insulating framework. According to the stator assembly for the rotary transformer, the insulation framework and the outgoing line structure are connected through the fixing part, so that the strength of the outgoing line structure can be improved, the groove is formed in the stator iron core, the fixing part is embedded into the groove, interference with an installation space is avoided when the rotary transformer is assembled, and the installation efficiency is improved. The assembly of the rotary transformer is facilitated, the production cost is not increased, the production period is not prolonged, and the production is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a stator assembly, in particular to a stator assembly for a rotary transformer. BACKGROUND

[0002] The part of the rotary transformer which extends radially and exceeds the outer circle of the stator core is a lead-out wire structure, in order to enhance the firmness of the lead-out wire structure, the common method is to connect the lower framework and the lead-out wire structure together through the reinforcing rib, the reinforcing rib is wrapped on the outer circle of the stator core, through this design, the strength of the radially extending lead-out wire structure is relatively high, and it is difficult to break under external force, but because the reinforcing rib covers on the outer circle of the stator core, a protrusion is generated on the surface of the outer circle of the stator core, when the stator assembly for the rotary transformer is installed, the outer circle of the stator core is usually used as the circumferential positioning.In some installation environments, the reinforcing rib part interferes with the installation space (the diameter of the installation space is the same as the diameter of the stator core), so that assembly cannot be carried out, and the reinforcing rib at this position needs to be cancelled during injection molding, after the reinforcing rib is cancelled, the strength of the radially extending lead-out wire structure is obviously reduced, and the lead-out wire structure is prone to breakage when the external force is too large.

[0003] The information disclosed in this section is only intended to increase the understanding of the overall background of the present utility model, and should not be regarded as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a new stator assembly for a rotary transformer, which can increase the strength of the lead-out wire structure and does not affect assembly.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides a stator assembly for a rotary transformer, which comprises a stator core, an insulating framework, a lead-out wire structure and a fixing part, the insulating framework is wrapped on the stator core, a groove is formed on the outer periphery of the stator core, the lead-out wire structure is formed on the insulating framework, the fixing part is arranged in the groove and is fixedly connected with the lead-out wire structure at one end and is fixedly connected with the insulating framework through the groove at the other end.

[0006] In one or more embodiments of the utility model, the stator core comprises a stator yoke and a plurality of stator teeth formed on the inner side of the stator yoke, and the groove is formed on the outer periphery of the stator yoke.

[0007] In one or more embodiments of the utility model, the stator yoke has an inner side forming the stator teeth, an outer side opposite to the inner side, and a first end surface and a second end surface opposite to each other and connecting the inner side and the outer side, the recess includes a first slot body opened on the outer side and penetrating the first end surface and the second end surface, and a second slot body opened on the second end surface and penetrating the outer side, and the first slot body and the second slot body are communicated.

[0008] In one or more embodiments of the utility model, the insulation framework includes an upper framework and a lower framework, and the upper framework and the lower framework are fixedly buckled on the stator core.

[0009] In one or more embodiments of the utility model, the lead-out wire structure is formed at the edge of the upper framework, and the fixing part is arranged in the recess and fixedly connected with the lead-out wire structure at one end and fixedly connected with the lower framework at the other end.

[0010] In one or more embodiments of the utility model, the fixing part includes a first connecting part in the first slot body and a second connecting part in the second slot body, the top of the first connecting part is flush with the outer side, and the top of the second connecting part is flush with the second end surface.

[0011] In one or more embodiments of the utility model, the fixing part includes a first connecting part in the first slot body and a second connecting part in the second slot body, the top of the first connecting part is lower than the outer side, and the top of the second connecting part is lower than the second end surface.

[0012] In one or more embodiments of the utility model, the recess and the fixing part are both provided with two.

[0013] In one or more embodiments of the utility model, the recess is L-shaped.

[0014] In one or more embodiments of the utility model, the depth of the first slot body is less than the depth of the second slot body.

[0015] Compared with the prior art, the stator assembly for a rotary transformer according to the embodiments of the utility model can increase the strength of the lead-out wire structure by connecting the insulation framework and the lead-out wire structure through the fixing part, can facilitate the assembly of the rotary transformer by opening the recess on the stator core and embedding the fixing part in the recess, so as to not interfere with the installation space during the assembly of the rotary transformer, and can facilitate production without increasing production cost and prolonging production cycle. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the front structure schematic view of the stator assembly for a rotary transformer according to an embodiment of the utility model;

[0017] Figure 2 is a perspective structural schematic view of a stator assembly for a rotary transformer according to an embodiment of the present application;

[0018] Figure 3 is a first structural schematic view of a stator core according to an embodiment of the present application;

[0019] Figure 4 is a second structural schematic view of a stator core according to an embodiment of the present application. DETAILED DESCRIPTION

[0020] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of protection of the present application is not limited by the specific embodiments.

[0021] Unless otherwise explicitly indicated, throughout the specification and claims, the term "comprise" or its variations such as "comprises" or "comprising" will be understood to encompass the stated element or elements or components, but not to exclude the presence of other elements or components.

[0022] As shown in Figure 1 and Figure 2 A stator assembly for a rotary transformer according to a preferred embodiment of the present application comprises a stator core 10, an insulating framework, a lead structure 30, and a fixing portion 40. The insulating framework is wrapped around the stator core 10, a groove 11 is formed on the outer periphery of the stator core 10, the lead structure 30 is formed on the insulating framework, and the fixing portion 40 is arranged in the groove 11 and fixedly connected to the lead structure 30 at one end and fixedly connected to the insulating framework at the other end by passing through the groove 11. The number of grooves 11 and fixing portions 40 can be selected as needed, and in an embodiment, two grooves 11 and two fixing portions 40 are provided.

[0023] As shown in Figure 3 and Figure 4 The stator core 10 comprises a stator yoke 101 and a plurality of stator teeth 102 formed on the inner side of the stator yoke 101, and the groove 11 is formed on the outer periphery of the stator yoke 101.

[0024] Specifically, the stator yoke 101 has an inner side surface 1011 forming the stator teeth 102, an outer side surface 1012 opposite to the inner side surface 1011, and a first end surface 1013 and a second end surface 1014 connected to the inner side surface 1011 and the outer side surface 1012 and arranged opposite to each other.

[0025] The recess 11 comprises a first groove body 111 opened on the outer side surface 1012 and penetrating the first end surface 1013 and the second end surface 1014, and a second groove body 112 opened on the second end surface 1014 and penetrating the outer side surface 1012, the first groove body 111 and the second groove body 112 being in communication, and the first groove body 111 and the second groove body 112 being connected in an L shape.

[0026] The stator core 10 is formed by stacking silicon steel sheets, the second groove body 112 is opened on the uppermost one or more layers of silicon steel sheets, and the first groove body 111 is opened on the lower layers of silicon steel sheets, the depth of the first groove body 111 being less than the depth of the second groove body 112, the depth of the first groove body 111 being the distance from the outer side surface 1012 to the bottom of the first groove body 111 in the radial direction, and the depth of the second groove body 112 being the distance from the outer side surface 1012 to the bottom of the second groove body 112 in the radial direction.

[0027] As shown in Figs. 1 and 2, the insulation framework comprises an upper framework 21 and a lower framework 22, the upper framework 21 and the lower framework 22 being fixedly connected to the stator core 10. Figure 1 and Figure 2 The lead structure 30 is formed at the edge of the upper framework 21, and the fixing portion 40 is arranged in the recess 11 and fixedly connected to the lead structure 30 at one end and to the lower framework 22 at the other end. The connection between the fixing portion 40 and the insulation framework is close to the first end surface 1013, and the connection between the fixing portion 40 and the lead structure 30 is close to the second end surface 1014.

[0028] The fixing portion 40 comprises a first connecting portion 401 located in the first groove body 111 and a second connecting portion 402 located in the second groove body 112, the top of the first connecting portion 401 being flush with the outer side surface 1012, and the top of the second connecting portion 402 being flush with the second end surface 1014. In other embodiments, the top of the first connecting portion 401 can be lower than the outer side surface 1012, and the top of the second connecting portion 402 can be lower than the second end surface 1014. In other embodiments, the top of the first connecting portion 401 can be flush with the outer side surface 1012 and the top of the second connecting portion 402 can be lower than the second end surface 1014, or the top of the first connecting portion 401 can be lower than the outer side surface 1012 and the top of the second connecting portion 402 can be flush with the second end surface 1014.

[0029] The thickness of the first connecting portion 401 is less than the thickness of the second connecting portion 402, the length of the first connecting portion 401 is greater than the length of the second connecting portion 402, and the width of the first connecting portion 401 is equal to the width of the second connecting portion 402. By reasonably setting the thickness, length and width of the first connecting portion 401 and the second connecting portion 402, the fixing portion 40 itself has sufficient strength.

[0030] As shown in Figs. 1 and 2, the insulation framework comprises an upper framework 21 and a lower framework 22, the upper framework 21 and the lower framework 22 being fixedly connected to the stator core 10. Figure 1As shown, the lead-out wire structure 30 is formed with a terminal post (not shown in the figure), and the lead-out wire structure 30 is formed with a terminal lug 32, the terminal post is electrically connected with the terminal lug 32, the terminal post is used for welding the winding lead-out wire wound in the stator slot, and the terminal lug 32 is used for lead-out wire welding.

[0031] The upper framework 21 is further provided with a first limiting block 211, the first limiting block 211 is arranged on the upper framework 21 in a circumferential direction, the lower framework 22 is further provided with a second limiting block 221, the second limiting block 221 is arranged on the lower framework 22 in a circumferential direction, and the first limiting block 211 and the second limiting block 221 are both used for guiding and limiting the wire between the windings.

[0032] The foregoing description of specific exemplary embodiments of the present application is intended to be illustrative only and is not intended to be limiting as to the scope of the present application. Many changes and modifications can be suggested by those skilled in the art, and it is intended that the scope of the present application can only be limited by the scope of the appended claims. The exemplary embodiments were chosen and described in order to explain the principles of the present application and the practical application thereof and to enable others skilled in the art to understand for themselves the application, various embodiments being shown by way of example. The scope of the present application is to be defined by the claims and their equivalents.

Claims

1. A stator assembly for a rotary transformer, characterized in that, include: Stator core, insulating frame, lead wire structure and fixing part; The insulating frame covers the stator core, and a groove is formed on the outer periphery of the stator core. The lead wire structure is formed on the insulating frame, and the fixing part is disposed in the groove, with one end fixedly connected to the lead wire structure and the other end passing through the groove and fixedly connected to the insulating frame.

2. The stator assembly for a rotary transformer as described in claim 1, characterized in that, The stator core includes a stator yoke and a plurality of stator teeth formed on the inner side of the stator yoke, and the groove is formed on the outer periphery of the stator yoke.

3. The stator assembly for a rotary transformer as described in claim 2, characterized in that, The stator yoke has an inner surface forming stator teeth, an outer surface opposite to the inner surface, and a first end face and a second end face connecting the inner surface and the outer surface and arranged opposite to each other. The groove includes a first groove formed on the outer surface and penetrating the first end face and the second end face, and a second groove formed on the second end face and penetrating the outer surface. The first groove and the second groove are connected.

4. The stator assembly for a rotary transformer as described in claim 1, characterized in that, The insulating frame includes an upper frame and a lower frame, which are fastened and fixed to the stator core.

5. The stator assembly for a rotary transformer as described in claim 4, characterized in that, The lead wire structure is formed at the edge of the upper skeleton, and the fixing part is set in the groove with one end fixedly connected to the lead wire structure and the other end fixedly connected to the lower skeleton.

6. The stator assembly for a rotary transformer as described in claim 3, characterized in that, The fixing part includes a first connecting part located in the first groove and a second connecting part located in the second groove. The top of the first connecting part is flush with the outer side, and the top of the second connecting part is flush with the second end face.

7. The stator assembly for a rotary transformer as described in claim 3, characterized in that, The fixing part includes a first connecting part located in the first groove and a second connecting part located in the second groove. The top of the first connecting part is lower than the outer side surface, and the top of the second connecting part is lower than the second end surface.

8. The stator assembly for a rotary transformer as described in claim 1, characterized in that, Two grooves and two fixing parts are provided.

9. The stator assembly for a rotary transformer as described in claim 1, characterized in that, The groove is L-shaped.

10. The stator assembly for a rotary transformer as described in claim 3, characterized in that, The depth of the first groove is less than the depth of the second groove.

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