Rotary transformer framework

Abstract

The utility model discloses a rotary transformer framework which comprises an upper framework and a lower framework, the upper framework comprises a first annular main body and a PIN needle connecting part arranged on the periphery of the first annular main body in a protruding mode, and a plurality of first butt joint pins are arranged on the first annular main body in the circumferential direction; the plurality of first butt joint pins extend along a first direction parallel to the axial direction of the first annular main body; the lower framework comprises a second annular main body, a plurality of second butt joint pins are arranged on the second annular main body in the circumferential direction, and the second butt joint pins extend in the second direction parallel to the axial direction of the second annular main body; the end portions of the first butt joint pins and the end portions of the second butt joint pins are in complementary slope shapes, so that the upper framework and the lower framework can be in butt joint in the mode that the end portions of the first butt joint pins are in butt joint with the end portions of the second butt joint pins in a matched mode.

Description

Technical Field

[0001] The utility model relates to a rotary transformer and a frame thereof, belonging to the technical field of electronic components. Background Art

[0002] Some existing rotary transformers have a skeleton divided into an upper skeleton and a lower skeleton, which are butt-jointed and connected to the stator of the rotary transformer. The traditional method is to use secondary stator overmolding, where the upper and lower skeletons are overmolded on the stator at the same time by injection molding. The disadvantage of this method is that the high pressure during the overmolding process can easily deform the stator teeth, resulting in burrs on the parting surface when the mold is opened, which can easily cause poor insulation withstand voltage during subsequent production and winding.

[0003] To this end, the art has adopted a method of separately injecting and forming the upper and lower frames and then assembling them onto the stator. However, in this method, the docking pins of the upper and lower frames are prone to bounce and warp, thereby changing the length of the winding and ultimately affecting the electrical performance. Utility Model Content

[0004] The main purpose of the utility model is to provide an improved frame design to solve the problem that the docking pins are prone to bounce and warp after the existing upper and lower frames are assembled on the stator.

[0005] In order to achieve the above-mentioned purpose, the utility model proposes the following technical solutions:

[0006] A rotating transformer skeleton comprises: an upper skeleton, comprising a first annular body and a PIN needle connection portion protruding from the outer periphery of the first annular body, wherein a plurality of first docking pins are arranged circumferentially on the first annular body, and the plurality of first docking pins extend along a first direction parallel to the axial direction of the first annular body; a lower skeleton, comprising a second annular body, wherein a plurality of second docking pins are arranged circumferentially on the second annular body, and the plurality of second docking pins extend along a second direction parallel to the axial direction of the second annular body; the end of the first docking pin and the end of the second docking pin are in a complementary slope shape, so that the upper skeleton and the lower skeleton can be docked in a manner in which the end of the first docking pin is matched and docked with the end of the second docking pin.

[0007] The beneficial effect of the utility model is embodied in that the utility model designs the end parts of the docking feet of the upper and lower frames to be complementary sloped shapes. Compared with the end parts designed to be flush in the prior art, the heights of the docking feet of the upper and lower frames can be increased without changing the sum of the heights of the docking feet of the upper and lower frames. In this way, after the upper and lower frames are docked and assembled through the mounting opening of the stator, it is difficult for the upper and lower frames to bounce or warp from the mounting opening of the stator during subsequent winding, thereby ensuring the consistency of the winding.

[0008] Furthermore, the end of the first docking pin and the end of the second docking pin are inclined in opposite directions and have the same inclination angle.

[0009] Furthermore, the height of the highest point of the first docking pin is equal to the height of the highest point of the second docking pin, and the height of the lowest point of the first docking pin is equal to the height of the lowest point of the second docking pin. In this further technical solution, the first docking pin and the second docking pin have the same size, which can prevent the skeleton from bouncing and warping during winding to the greatest extent.

[0010] Furthermore, the inclination angles of the end of the first docking pin and the end of the second docking pin are both 45 degrees.

[0011] Further, the plurality of first docking pins are arranged at uniform intervals along the circumferential direction on the first annular body, and the plurality of second docking pins are arranged at uniform intervals along the circumferential direction on the second annular body.

[0012] Further, the first annular body and the second annular body have the same outer diameter.

[0013] Furthermore, a row of PIN pin holes is provided on the PIN pin connection portion, and a plurality of wire loosening grooves are provided between the row of PIN pin holes and the first annular body.

[0014] Furthermore, a plurality of upper winding parts are circumferentially arranged on the inner side of the first annular body, and a plurality of lower winding parts are circumferentially arranged on the inner side of the second annular body; when the upper skeleton is docked with the lower skeleton, the plurality of upper winding parts are docked one by one with the plurality of lower winding parts to form a plurality of winding parts.

[0015] Furthermore, an upper baffle is provided at the front end of the upper half winding part, and a lower baffle is provided at the front end of the lower half winding part; when the upper frame is docked with the lower frame, the upper baffle and the lower baffle are docked to form a wire stacking baffle of the winding part.

[0016] Further, the back side of the wire stacking baffle is set as a plane. In this further technical solution, the back side of the wire stacking baffle adopts a flat design rather than a curved design in order to better wind the coil into a square and increase the slot fill rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a rotating transformer skeleton of an embodiment of the utility model.

[0018] Figure 2 It is a schematic diagram of the connection between the upper frame and the lower frame of an embodiment of the utility model.

[0019] Figure 3It is a schematic diagram of an upper skeleton of an embodiment of the utility model.

[0020] Figure 4 It is a schematic diagram of the lower frame of an embodiment of the utility model.

[0021] Figure 5 It is a schematic diagram of the connection between the upper frame and the PIN needle of an embodiment of the utility model.

[0022] Figure 6 It is a schematic diagram of the rotating transformer skeleton and stator of an embodiment of the utility model.

[0023] Explanation of the accompanying drawings: 1-upper skeleton, 11-first annular body, 111-first docking pin, 112-upper winding part, 113-upper baffle, 113A-back side, 12-PIN needle connecting part, 121-PIN needle hole, 122-loose wire groove; 2-lower skeleton, 21-second annular body, 211-second docking pin, 213-lower baffle; 3-PIN needle; 4-statator. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods and examples. The purpose of providing the examples is only for illustration, and no limitation is imposed. In addition, the spatial orientation words such as "upper", "lower", "left", "right", etc. used in the description of the technical solution of the present invention are convenient for describing the relative position relationship between the components of the product, and do not mean that the product has only the swing direction shown in the figure. In actual use, as the product swing direction is different, the spatial related description used to describe its swing direction should also be interpreted in a similar way. In addition, the words "first", "second", etc. are only used to distinguish components. It should be understood that these components should not be limited by such words. They themselves do not mean that these elements have the aforementioned ordinal numbers, nor do they represent the arrangement order of a certain component and another component or the order in the manufacturing method.

[0025] The present invention provides a rotary transformer skeleton. Figures 1 to 4The skeleton comprises an upper skeleton 1 and a lower skeleton 2; the upper skeleton 1 comprises a first annular body 11 and a PIN needle connection portion 12 protruding from the outer periphery of the first annular body 11, a plurality of first docking pins 111 are arranged along its circumferential direction on the first annular body 11, and the plurality of first docking pins extend along a first direction F1 parallel to the axial direction of the first annular body 11; the lower skeleton 2 comprises a second annular body 21, a plurality of second docking pins 211 are arranged along the circumferential direction on the second annular body 21, and the plurality of second docking pins extend along a second direction F2 parallel to the axial direction of the second annular body 21; and the end of the first docking pin 111 and the end of the second docking pin 211 are in a complementary slope shape, and the end of the first docking pin 111 and the end of the second docking pin 211 are in opposite inclination directions and have the same inclination angle, so that the upper skeleton 1 and the lower skeleton 2 can be docked in a manner that the end of the first docking pin 111 is matched and docked with the end of the second docking pin 211, such as Figure 2 . In this way, if Figure 6 As shown, the upper frame 1 and the lower frame 2 are respectively inserted into the corresponding installation openings of the stator 4 from both sides of the stator 4 for docking, thereby achieving assembly with the stator 4.

[0026] Continue to refer Figure 1 and Figure 2 The first docking pin 111 of the upper frame 1 and the second docking pin 211 of the lower frame 2 have the same size design (width, thickness, height). Specifically, the first docking pin 111 and the second docking pin 211 have the same axial height, the height of the highest point of the first docking pin 111 is equal to the height of the highest point of the second docking pin 211, and the height of the lowest point of the first docking pin 111 is equal to the height of the lowest point of the second docking pin 211; in addition, the circumferential width and radial thickness are the same. In a preferred embodiment, the inclination angles of the ends of the first docking pin 111 and the second docking pin 211 are both 45 degrees.

[0027] Continue to refer Figures 1 to 4 The plurality of first docking pins 111 of the upper frame 1 are arranged circumferentially at uniform intervals on the first annular body 11, and the plurality of second docking pins 211 of the lower frame 2 are also arranged circumferentially at uniform intervals on the second annular body 21. Preferably, the first annular body 11 of the upper frame 1 and the second annular body 21 of the lower frame 2 have the same outer diameter.

[0028] like Figure 3As shown, in other embodiments, a row of PIN pin holes 121 is provided on the PIN pin connection portion 12 of the upper frame 1, and a plurality of loose wire grooves 122 are provided between the row of PIN pin holes and the first annular body 21. In an exemplary rotary transformer, three groups of coils, namely, excitation, sine and cosine, are provided, with a total of 6 wire ends, and 6 PIN pin holes are provided accordingly, each of which has a PIN pin, and each PIN pin has a wire end hung thereon; at the same time, there are three loose wire grooves, each of which is located in the middle of a pair of PIN pins, and is correspondingly used for loosening the wire of a group of coils. Specifically, when winding, there are pillars in the loose wire grooves 122, so that in the process of the wire from the winding part to the PIN pin after passing through the pillars, the original straight line becomes a line with a certain bend in the presence of the pillars. When the winding is completed and the pillars are removed, the part of the wire has a certain slack, and the purpose of this is to prevent the wire from breaking due to the vibration of the whole vehicle during the use of the rotary transformer (used at the end of the driving motor of the car).

[0029] For the winding part, please refer to Figures 3 to 5 A plurality of upper winding parts 112 are circumferentially arranged on the inner side of the first annular body 11 of the upper skeleton 1, and a plurality of lower winding parts are circumferentially arranged on the inner side of the second annular body 21 of the lower skeleton 2; when the upper skeleton 1 is docked with the lower skeleton 2, the plurality of upper winding parts are docked one by one with the plurality of lower winding parts to form a plurality of winding parts, the wires are wound around the winding parts, and the wire ends are hung on the PIN needles 3.

[0030] Continue to refer Figure 3 and Figure 4 In a preferred embodiment, an upper baffle 113 is provided at the front end of the upper half winding part 112, and the back side 113A of the upper baffle 113 is set to be a plane; accordingly, a lower baffle 213 is also provided at the front end of the lower half winding part, and the back side of the lower baffle 213 is also set to be a plane. In this way, when the upper frame 1 and the lower frame 2 are connected, the upper baffle 113 and the lower baffle 213 are connected to form a wire stacking baffle of the winding part, and the back side of the wire stacking baffle is a plane, which helps to increase the slot full rate of the square winding in the winding part.

[0031] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For technicians in the technical field to which the present invention belongs, several equivalent substitutions or obvious variations can be made without departing from the concept of the present invention, and the performance or use is the same, which should be regarded as belonging to the protection scope of the present invention.

Claims

1. A rotary transformer skeleton, characterized in that: include: The upper frame includes a first annular body and a PIN needle connection portion protruding from the outer periphery of the first annular body, wherein a plurality of first docking pins are arranged circumferentially on the first annular body, and the plurality of first docking pins extend along a first direction parallel to the axial direction of the first annular body; The lower frame comprises a second annular body, on which a plurality of second docking pins are arranged circumferentially, and the plurality of second docking pins extend along a second direction parallel to the axial direction of the second annular body; The end of the first docking pin and the end of the second docking pin are in a complementary slope shape, so that the upper frame and the lower frame can be docked in a manner in which the end of the first docking pin fits and docks with the end of the second docking pin.

2. The rotary transformer skeleton according to claim 1, characterized in that: The end of the first docking pin and the end of the second docking pin are inclined in opposite directions and have the same inclination angle.

3. The rotary transformer skeleton according to claim 1, characterized in that: The height of the highest point of the first docking pin is equal to the height of the highest point of the second docking pin, and the height of the lowest point of the first docking pin is equal to the height of the lowest point of the second docking pin.

4. The rotary transformer skeleton according to claim 1, characterized in that: The inclination angles of the end of the first docking pin and the end of the second docking pin are both 45 degrees.

5. The rotary transformer skeleton according to claim 1, characterized in that: The plurality of first mating pins are arranged on the first annular body at uniform intervals along the circumferential direction, and the plurality of second mating pins are arranged on the second annular body at uniform intervals along the circumferential direction.

6. The rotary transformer skeleton according to claim 1, characterized in that: The first annular body and the second annular body have the same outer diameter.

7. The rotary transformer skeleton according to claim 1, characterized in that: A row of PIN pin holes is provided on the PIN pin connection portion, and a plurality of wire loosening grooves are provided between the row of PIN pin holes and the first annular body.

8. The rotary transformer skeleton according to claim 1, characterized in that: The inner side of the first annular body is provided with a plurality of upper half winding parts along the circumferential direction, and the inner side of the second annular body is provided with a plurality of lower half winding parts along the circumferential direction; when the upper skeleton is docked with the lower skeleton, the plurality of upper half winding parts are docked one by one with the plurality of lower half winding parts to form a plurality of winding parts.

9. The rotary transformer skeleton according to claim 8, characterized in that: An upper baffle is provided at the front end of the upper half winding part, and a lower baffle is provided at the front end of the lower half winding part; when the upper frame is docked with the lower frame, the upper baffle and the lower baffle are docked to form a wire stacking baffle of the winding part.

10. The rotary transformer skeleton according to claim 9, characterized in that: The back side of the wire stacking baffle is configured as a flat surface.

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