Rotary transformer stator structure with mistaken assembly prevention function and rotary transformer

Abstract

The invention discloses a rotary transformer stator structure with a mistaken assembly prevention function and a rotary transformer, and in the rotary transformer stator structure, symbols or characters or numbers representing a thread assembly sequence are formed on the outer surface of an annular stator or the surface or the back surface of an annular winding cover; as a mark when the ring-shaped stator is mounted to the motor housing. The rotary transformer comprises the rotary transformer stator structure, and a rotor is rotatably arranged on the inner side of the annular stator. According to the invention, the annular stator can be simply and accurately installed on the motor and the like based on the mark, and the installation yield is improved.

Description

Technical Field

[0001] The invention relates to the assembly between a rotary transformer and a motor, and in particular to a rotary transformer stator structure and a rotary transformer with an anti-misassembly function. Background Art

[0002] Figure 1 The figure shows the structure of a conventional inner rotor type rotary transformer, in which a plurality of mounting holes 40 and a plurality of long holes 41 for cooling or magnetic resistance adjustment are circumferentially arranged on the stator core 21 of the annular stator 20, and the long holes 41 are located inside the mounting holes 40. A plurality of protruding magnetic poles 22 are arranged on the inner circumference of the stator core 21, and a stator winding 23 is wound on each protruding magnetic pole 22. In a circular gap 51 surrounded by each protruding magnetic pole 22, a rotor 10 with an elliptical outer circumference (2X, X is a well-known axial multiple angle) is rotatably arranged.

[0003] Figure 2 The structure of a conventional outer rotor type rotary transformer is shown. A plurality of mounting holes 40 and a plurality of long holes 41 for cooling or magnetic resistance adjustment are provided in an annular direction on the stator core 21 of the annular stator 20. The long holes 41 are located outside the mounting holes 40. A plurality of protruding magnetic poles 22 are provided on the outer peripheral surface of the stator core 21. A stator winding 23 is wound around each protruding magnetic pole 22. A rotor 10 having a perfect circle outer circumference and an inner circumference formed as (3X) is rotatably provided in a space 52 formed outward by each protruding magnetic pole 22. A protrusion 12 is provided on the tangent Lt1A of the rotor 10. The center line Lc1A of the protrusion 12 is offset relative to the intersection P' of the axial center P of the stator core 21 and the tangent Lt1A of the rotor 10.

[0004] Technical problems of existing rotary transformers:

[0005] Since the stator core of the resolver is stacked by rolling (referring to the silicon steel sheets being rotated and stacked one by one), holes or slits that are not required for assembly are processed on the outer periphery of the stator core. When the resolver is assembled to the motor with screws, it is easy to cause the threaded through hole to be assembled incorrectly. Summary of the invention

[0006] Purpose of the invention: The first purpose of the present invention is to provide a rotary transformer stator structure with an anti-misassembly function that can improve the installation yield when the rotary transformer is installed on the motor side; the second purpose of the present invention is to provide a rotary transformer.

[0007] Technical solution: The rotating transformer stator structure with anti-misassembly function described in the present invention includes a stacked annular stator, on which are formed long hole-shaped mounting holes and connecting holes for attenuating radial magnetic resistance, and on the inner circumferential surface of the annular stator, a plurality of protruding magnetic poles are arranged at specified angle intervals, and a stator winding is wound on each protruding magnetic pole. An annular insulating cover is arranged on both sides of the annular stator for insulating the protruding magnetic poles and the stator winding; each stator winding is annularly covered by an annular winding cover; and on the outer surface of the annular stator, or on the surface or back of the annular winding cover, a mark for installing the annular stator on a motor housing is formed.

[0008] Further, the marking includes symbols or letters, or numbers indicating the thread assembly sequence.

[0009] Furthermore, the labeling adopts a single label or a combination of different labels.

[0010] Further, the mark on the annular winding cover is formed when the annular winding cover is injection molded.

[0011] Furthermore, an extension portion and a terminal pin holding portion are provided at one end of the annular winding cover, the extension portion is formed with a through hole connected to the terminal pin holding portion, the terminal pin is built in the terminal pin holding portion, and the winding wire is connected to the terminal pin through the through hole.

[0012] Furthermore, the extended portion having the through hole is formed simultaneously when the annular winding cover is injection molded.

[0013] Furthermore, the terminal pin holding portion is injection-molded in a state where it penetrates the through hole and protrudes outward in an L-shape to house the terminal pin.

[0014] Furthermore, the mounting holes and the connecting holes are alternately arranged along the annular direction on the annular stator.

[0015] The rotary transformer of the present invention comprises a rotor and the rotary transformer stator structure, wherein the rotor is rotatably arranged inside the annular stator.

[0016] Furthermore, the rotor has an 8X axis angle multiple.

[0017] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: The rotary transformer stator structure proposed in the present invention has an anti-misassembly function, which can improve the installation yield rate when the rotary transformer is installed on the motor side. Specifically, a mark (symbol, text or number) for installing the annular stator on the motor housing is set on the outer surface of the annular stator, or the surface or back of the annular winding cover. Based on the mark, the rotary transformer can be accurately fixed to the motor using fasteners such as bolts and screws, eliminating the problem of easy assembly errors in the current installation of the rotary transformer on the motor. In addition, on an automated production line, electronic capture based on the mark can further achieve automatic installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an existing inner rotor type rotary transformer;

[0019] Figure 2 It is a structural schematic diagram of an existing outer rotor type rotary transformer;

[0020] Figure 3 is a structural schematic diagram of a rotary transformer provided by an embodiment of the present invention;

[0021] Figure 4 yes Figure 3 YY section view;

[0022] Figure 5 yes Figure 4 BB section enlarged view;

[0023] Figure 6 It is a schematic diagram of the structure of another rotary transformer provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Attached Figures 1 to 6 The reference numerals in the figures are as follows:

[0026] 10, rotor; 12, protrusion; 20, annular stator; 20a, outer surface; 21, stator core; 22, protruding magnetic pole; 23, stator winding; 31, stator outer edge; 40, mounting hole; 41, long hole; 50, terminal pin retaining portion; 50A, extended setting portion; 51, circular gap; 52, space; 60, connecting hole; 61, annular winding cover; 61a, surface; 61A, back side; 61b, triangle mark; 61c, arrow; 62, annular insulating cover; 70, mark; 80, circle; 90, through hole; 100, terminal pin.

[0027] like Figures 3 to 5As shown, an embodiment of the present invention provides a rotating transformer stator structure with an anti-misassembly function, including a stacked annular stator 20, on which are formed long hole-shaped mounting holes 40 and connecting holes 60 for attenuating radial magnetic resistance, and the mounting holes 40 and the connecting holes 60 are alternately arranged along the annular direction.

[0028] A plurality of protruding magnetic poles 22 are provided at predetermined angle intervals on the inner circumference of the annular stator 20, and an annular insulating cover 62 is provided on both surfaces of the annular stator 20. A stator winding 23 is wound around each protruding magnetic pole 22 via the annular insulating cover 62, and an annular winding cover 61 is provided to cover each protruding magnetic pole 22 with the stator winding 23 in an annular shape. The stator winding 23 and the protruding magnetic pole 22 are insulated by the annular insulating cover 62, and the stator winding 23 and the external air are isolated by the annular winding cover 61.

[0029] Symbols, characters, or numbers indicating the thread assembly sequence are formed on the outer surface 20a of the annular stator 20, or the surface 61a or back surface 61A of the annular winding cover 61 as marks 70 when the annular stator 20 is mounted on the motor housing. The symbols, characters, or numbers on the annular winding cover 61 are formed when the annular winding cover 61 is injection molded.

[0030] In one embodiment, the triangle mark 61b and the arrow 61c constitute the mark 70. The annular stator 20 is taken into a motor case (not shown), and the laminated annular stator 20 can be integrated by inserting screws, rods, etc. using only the mark 70.

[0031] In another embodiment, if Figure 6 As shown, Figure 3 The mark 70 composed of the combination of the triangular mark 61 b ​​and the arrow 61 c is replaced by a single circle 80 , and a screw or the like is inserted at the position of the circle 80 to complete the integration of the annular stator 20 .

[0032] In addition, an extension portion 50A and a terminal pin holding portion 50 are provided at one end of the annular winding cover 61. The extension portion 50A is formed with a through hole 90 communicating with the terminal pin holding portion 50. The extension portion 50A having the through hole 90 is formed together when the annular winding cover 61 is injection molded. The terminal pin holding portion 50 is injection molded in a state where it penetrates the through hole 90 and protrudes outward in an L shape with the terminal pin 100 built therein, and the winding wire is connected to the terminal pin 100 through the through hole 90.

[0033] Based on the marks 70 formed in advance on the annular stator 20 or the annular winding cover 61, even the annular stator 20 with a rough outer surface can be accurately mounted on the motor (not shown) side by screws or the like.

[0034] The embodiment of the present invention further provides a rotary transformer, comprising a rotor 10 and the rotary transformer stator structure according to the embodiment of the present invention, wherein the rotor 10 is rotatably arranged inside the annular stator 20. The rotor 10 has an 8X axial multiple angle.

[0035] In summary, the present invention can simply and correctly install the annular stator to the motor etc. based on the mark 70, thereby improving the installation yield rate.

Claims

1. A rotary transformer stator structure with an anti-misassembly function, comprising a laminated annular stator (20), on which a long hole-shaped mounting hole (40) and a connecting hole (60) for attenuating radial magnetic resistance are formed, and a plurality of protruding magnetic poles (22) are arranged on the inner circumference of the annular stator (20) at predetermined angle intervals, and a stator winding (23) is wound on each protruding magnetic pole (22), characterized in that: An annular insulating cover (62) is provided on both sides of the annular stator (20) for insulating the protruding magnetic pole (22) and the stator winding (23); each stator winding (23) is annularly covered by an annular winding cover (61); and a mark (70) for mounting the annular stator (20) on a motor housing is formed on the outer surface (20a) of the annular stator (20) or the surface (61a) or back surface (61A) of the annular winding cover (61).

2. The rotary transformer stator structure according to claim 1, characterized in that: The mark (70) includes symbols or letters, or numbers indicating the thread assembly sequence.

3. The rotary transformer stator structure according to claim 2, characterized in that: The label (70) may be a single label or a combination of different labels.

4. The rotary transformer stator structure according to claim 1, characterized in that: The mark (70) on the annular winding cover (61) is formed when the annular winding cover (61) is injection molded.

5. The rotary transformer stator structure according to claim 1, characterized in that: An extension portion (50A) and a terminal pin retaining portion (50) are provided at one end of the annular winding cover (61); the extension portion (50A) is formed with a through hole (90) connected to the terminal pin retaining portion (50); a terminal pin (100) is built into the terminal pin retaining portion (50); and the winding wire is connected to the terminal pin (100) via the through hole (90).

6. The rotary transformer stator structure according to claim 5, characterized in that: The extended portion (50A) having the through hole (90) is formed simultaneously when the annular winding cover (61) is injection molded.

7. The rotary transformer stator structure according to claim 6, characterized in that: The terminal pin holding portion (50) is injection molded in a state where it penetrates the through hole (90) and protrudes outward in an L shape with the terminal pin (100) built in.

8. The rotary transformer stator structure according to claim 1, characterized in that: The mounting holes (40) and the connecting holes (60) are alternately arranged along the annular direction on the annular stator (20).

9. A rotary transformer, characterized in that: The invention comprises a rotor (10) and a rotary transformer stator structure according to any one of claims 1 to 8, wherein the rotor (10) is rotatably arranged inside an annular stator (20).

10. The rotary transformer according to claim 9, characterized in that: The rotor (10) has an 8X axis angle multiple.

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