JP2001169493A - Insulated cap structure and resolver structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent continuity between a crossover wire and an annular stator and prevent a potting agent from leaking, by forming an annular wall in an external peripheral edge of each annular insulated cap unit. SOLUTION: In this constitution of the insulated cap structure and resolver structure, an annular wall (4B, 5B) is formed along an axial direction (A) of an annular stator (1) in an external peripheral edge (4A, 5A) of a pair of annular insulated cap units (4, 5) provided in both end surfaces (1a, 1b) of the annular stator (1).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulating cap structure and a resolver structure, and more particularly, to a pair of ring-shaped insulating cap members provided with a ring-shaped wall formed along the axial direction on the outer peripheral edges thereof, and wound by the ring-shaped wall. It relates to a new improvement for complete insulation between the wire and the annular stator.

[0002]

2. Description of the Related Art Conventionally, as the insulating cap structure and the resolver structure of this kind which have been used, the structures shown in FIGS. 4 to 6 are generally employed. That is, FIG.
5 shows one ring-shaped insulating cap body, FIG. 5 shows the whole resolver, and FIG. 6 shows a right side view of FIG.
6 is a ring-shaped stator having a plurality of salient pole portions 2 and slots 3 as a whole as shown in FIG. 5 and having both ends 1a,
In 1b, a pair of first and second annular insulating cap bodies 4, 5 shown in FIG. 4 are provided in a fitting manner.

The ring-shaped insulating caps 4 and 5 are formed in the same shape as each other, and when fitted into the ring-shaped stator 1, are arranged symmetrically on the both end surfaces 1a and 1b. In plan view, each of the salient pole portions 2
And an inner end wall 6 extending along the axial direction A is formed at an inner end corresponding to each salient pole portion 2, and is wound around each salient pole portion 2. The configuration is such that the winding 7 does not protrude inside each salient pole portion 2.

[0004] A slot wall 8 formed at a position corresponding to the slot 3 on each of the ring-shaped insulating cap bodies 4, 5.
Covers the slot 3, and a protruding piece 10 is formed integrally along the axial direction A on the end surface of the slot wall 8 of the first annular insulating cap body 4.

[0005] A transition wire 7a of a winding 7 wound around the outer periphery of each salient pole portion 2 through each of the ring-shaped insulating cap members 4,5.
Are connected to the windings 7 of the adjacent salient pole portions 2 via the outside of the respective projecting pieces 10 formed corresponding to the respective slots 3. The outer peripheral edge 4 of each of the ring-shaped insulating cap bodies 4, 5
A and 5A are formed in a flat plate shape, and as shown in FIG.
Crossover 7 provided only on first annular insulating cap body 4 side
The insulation from the ring-shaped stator 1 is held by the outer peripheral edge 4A. Lead wire 20 connected to the winding 7
Is derived outward.

[0006]

The conventional insulating cap structure and the resolver structure have the following problems because they are configured as described above. That is, since the outer peripheral edge of each ring-shaped insulating cap body is only flat and flat, and when the crossover is guided to the outside of the protruding piece, the crossover exceeds the outer peripheral edge and comes into contact with the ring-shaped stator, and the insulation is reduced. Sometimes it was bad. Also, this crossover wire is fixed with resin or the like at the outer peripheral edge, but since the outer peripheral edge is flat,
The resin and the like could not be held, and a small amount of the resin was used, and sufficient holding and fixing could not be performed. In addition, the resin and the like easily flow to the periphery and flow out to the annular stator side.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and in particular, a ring-shaped wall formed along the axial direction is provided on the outer peripheral edge of a pair of ring-shaped insulating cap bodies.
An object of the present invention is to provide an insulating cap structure and a resolver structure in which insulation between the winding and the annular stator is completely performed by the annular wall.

[0008]

According to the present invention, there is provided an insulating cap structure provided on both end surfaces of a ring-shaped stator having a plurality of slots and salient pole portions alternately, and a winding wound around each of the salient pole portions. And a pair of ring-shaped insulating caps disposed between the ring-shaped stator and the entire shape of the ring-shaped stator, the outer circumferential edge of each ring-shaped insulating cap, along the axial direction of the ring-shaped stator. And an inner end wall formed at the inner end of each of the annular insulating cap bodies and corresponding to the salient pole portion (2).
(6), wherein the first axial length of the annular wall is smaller than the second axial length of the inner end wall, and the resolver structure according to the present invention includes a plurality of slots. In a resolver structure having windings wound around each of the salient pole portions via a pair of annular insulating cap bodies on both end surfaces of the annular stator having alternating salient pole portions, a resolver structure having a rotor inside the annular stator, A ring-shaped wall formed along an axial direction of the ring-shaped stator is formed on an outer peripheral edge of the ring-shaped insulating cap body, and is formed on each of the ring-shaped insulating cap bodies and corresponds to each of the slots. And a projecting piece located inside the annular wall, and the crossover of the winding is guided between the annular wall and the projecting piece.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of an insulating cap structure and a resolver structure according to the present invention will be described below with reference to the drawings. The same or equivalent parts as those in the conventional example will be described with the same reference numerals. FIG. 1 shows one ring-shaped insulating cap body, FIG. 2 shows the whole resolver, and FIG.
Shows a right side view of FIG. 3 is a ring-shaped stator having a plurality of salient pole portions 2 and slots 3 as a whole, as shown in FIG. 2, and has two end faces 1a and 1b. A pair of first and second annular insulating cap bodies 4 and 5 shown in FIG. 1 are provided in a fitting manner.

The ring-shaped insulating caps 4 and 5 are formed in the same shape as each other, and when fitted into the ring-shaped stator 1, are arranged symmetrically on the both end surfaces 1a and 1b. In plan view, each of the salient pole portions 2
An inner end wall 6 extending along the axial direction A is formed integrally with an inner end corresponding to each salient pole portion 2 and is wound around each salient pole portion 2. The configuration is such that the wound winding 7 does not protrude inside each salient pole portion 2.

A slot wall 8 formed at a position corresponding to the slot 3 on each of the ring-shaped insulating cap bodies 4 and 5.
Covers the slot 3, and a protruding piece 10 is integrally formed along the axial direction A on the end surface of the slot wall 8 of the first annular insulating cap body 4. The outer peripheral edges 4A, 5A of the respective annular insulating cap bodies 4, 5 are formed with annular walls 4B, 5B protruding along the axial direction A, and the first axial length of the annular walls 4B, 5B. The length L1 is configured to be smaller than the second axial length L2 of the inner end wall 6, and the axial length (that is, thickness) of the resolver is set between both ends of each ring-shaped insulating cap body 4, 5. Is not longer than the length in the axial direction.

A connecting wire 7a of a winding 7 wound around the outer periphery of each salient pole portion 2 through each of the ring-shaped insulating cap members 4,5.
Are connected to the windings 7 of the adjacent salient pole portions 2 through between the respective projecting pieces 10 formed corresponding to the respective slots 3 and the annular wall 4B. In addition, each ring-shaped insulating cap body 4,
Since the outer peripheral edges 4A, 5A of 5 have the ring-shaped walls 4B, 5B, the connecting wires 7a passing through the respective projecting pieces 10 are provided.
Is covered with a potting resin agent or a varnish impregnating agent (not shown), the potting resin agent or the varnish impregnating agent is stopped by the annular walls 4B and 5B, and leakage to the outside is prevented. Note that the rotor in FIG. 2 has a configuration including only a known core, but is not illustrated.

[0013]

Since the insulating cap structure and the resolver structure according to the present invention are configured as described above, the following effects can be obtained. That is, since the annular wall is provided on the outer peripheral edge of each annular insulating cap body provided at both ends of the annular stator, there is no continuity between the crossover wire and the annular stator, and the potting resin agent or the varnish agent is used. At the time of fixing the crossover, the potting resin agent and the varnish agent do not leak to the ring-shaped stator side, and the quality can be improved.

[Brief description of the drawings]

FIG. 1 is a side view showing a ring-shaped insulating cap body having an insulating cap structure according to the present invention.

FIG. 2 is a front view showing a resolver structure according to the present invention.

FIG. 3 is a half sectional view of the resolver structure of FIG. 2;

FIG. 4 is a side view showing a conventional ring-shaped insulating cap body.

FIG. 5 is a front view showing a conventional resolver structure.

FIG. 6 is a half sectional view of the resolver structure of FIG. 5;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 annular stator 1a, 1b both end surfaces 2 salient pole portion 4, 5 annular insulating cap body 4A, 5A outer peripheral edge A axial direction 4B, 5B annular wall 6 inner end wall 7 winding L1 first axial length L2 second axis Direction length 7a Crossover 10 Protrusion

Claims (4)

[Claims] An annular stator (1) having a plurality of slots (3) and salient pole portions (2) alternately provided on both end faces (1a, 1b) of the annular stator (1).
A pair of ring-shaped insulating cap bodies (4, 5) disposed between the winding (7) wound around each of the salient pole portions (2) and the ring-shaped stator (1) and having an overall shape of a ring. In the insulating cap structure having an outer peripheral edge (4A, 5) of each said annular insulating cap body (4, 5),
A), the annular wall along the axial direction (A) of the annular stator (1)
(4B, 5B) is formed, the insulating cap structure characterized by the above-mentioned. 2. An inner end wall (6) formed at an inner end of each of said annular insulating cap bodies (4, 5) and corresponding to said salient pole portion (2),
The first axial length (L1) of the annular wall (4B, 5B) is the inner end wall.
The insulating cap structure according to claim 1, wherein the length is smaller than the second axial length (L2) of (6). 3. An annular stator (1) having a plurality of slots (3) and salient pole portions (2) alternately provided on both end surfaces (1a, 1b) of the annular stator (1) via a pair of annular insulating cap bodies (4, 5). To the salient poles (2)
(7), in the resolver structure having a rotor inside the annular stator (1), the annular insulating cap body
A ring-shaped wall (4B, 5B) formed along the axial direction (A) of the ring-shaped stator (1) is formed on an outer peripheral edge (4A, 5A) of (4, 5). Resolver structure. 4. The ring-shaped insulating cap body (4, 5) is formed in each of said slots (3), and said annular wall
(4B, 5B) has a protruding piece (10) located inside, the winding (7)
The resolver structure according to claim 3, wherein the crossover (7a) is configured to be guided between the annular wall (4B, 5B) and the projecting piece (10).