JP2021016275A - End wire fixing structure of stator winding for resolver - Google Patents

Abstract

To simplify fixing of an end wire.SOLUTION: An end wire fixing structure of a stator winding for a resolver includes: a ring-shaped insulating cover (3) provided on both end faces (1A, 1B) of a ring-shaped stator (1); a terminal pin holding portion (4) integrally formed with a part of the ring-shaped insulating cover (3) and having an upper surface (4a); a plurality of terminal pins (7) provided in the terminal pin holding portion (4); a plate-shaped member (10) provided on the upper surface (4a) between the terminal pin (7) of the terminal pin holding portion (4) and a stator winding (8) of a protruding magnetic pole (2) and having a slack pin (9); and a gap (11) formed between a lower surface (10a) of the plate-shaped member (10) and the upper surface (4a) of the terminal pin holding portion (4). An end wire (8a) of the stator winding (8) is fixed to the gap (11) between the lower surface (10a) of the plate-shaped member (10) and the upper surface (4a) of the terminal pin holding portion (4).SELECTED DRAWING: Figure 2

Description

The present invention relates to a structure for fixing the end wire of the stator winding of the resolver, and in particular, there is no problem of disconnection of the end wire of the stator winding due to pressing by an external force or an increase in cost due to an increase in the amount of varnish. It is to use and fix it to prevent floating lines.

As the end line fixing structure of the stator winding of the conventional resolver, for example, the structure shown in FIGS. 3 and 4 of Patent Document 1 can be disclosed in FIGS. 4 and 5.
In FIGS. 4 and 5, what is indicated by reference numeral 1 is a ring-shaped stator, and protruding magnetic poles 2 are provided on the inner surface 1a of the ring-shaped stator 1 so as to project inward at predetermined angular intervals.

A ring-shaped insulating cover 3 is integrally formed on the ring-shaped stator 1 by injection molding so as to leave the outer edge of the ring-shaped stator 1 and cover all of the protruding magnetic poles 2 except for a part.
A terminal pin holding portion 4 extending along the radial direction P and having a plurality of terminal pins 7 is integrally provided in a part of the ring-shaped insulating cover 3.

Since the terminal pin holding portion wall 5 is provided on one end surface 5a of the terminal pin holding portion 4 over the entire circumference, the varnish collecting recess 6 in which the varnish 10 is stored so as to surround each of the terminal pins 7 is provided. Is formed.
A plurality of guide pins 9 are arranged side by side with the terminal pins 7 at a position in front of the varnish collecting recess 6 in the terminal pin holding portion 4.

The end wire 8a, which is the end of the stator winding 8 wound around each protruding magnetic pole 2, is wound around each terminal pin 7 via the guide pin 9.

JP-A-2009-27841

Since the magnet wire fixing structure of the conventional resolver is configured as described above, the following problems exist.
Generally, in order to prevent disconnection of the end wire, which is the lead-out part from the stator winding to the terminal pin for input / output, a process of releasing tension is required (such as removing the guide pin only at the time of wiring). The floating line generated in the varnish made it difficult to fix with varnish and lowered the vibration resistance.
In addition, as another conventional example, the end wire is pressed into the varnish by an external force to increase the amount of varnish, but the floating wire may be crushed by a jig or the like, which may cause disconnection. It was.
Further, as in Patent Document 1 described above, in a configuration in which a recess is formed in the terminal pin holding portion and the terminal pin is provided in the recess, the amount of varnish becomes enormous, which contributes to an increase in cost and measures against floating lines. As for, it was unreliable.

The present invention has been made to solve the above problems, and in particular, there is no problem of disconnection of the end wire of the stator winding due to pressing by an external force or cost increase due to an increase in the amount of varnish. The purpose is to prevent floating lines by fixing the coil using a gap.

The end line fixing structure of the stator winding of the resolver according to the present invention includes a ring-shaped stator having protruding magnetic poles formed inward at predetermined angular intervals, and a ring-shaped insulating cover provided on both end surfaces of the ring-shaped stator. , A stator winding wound around each of the protruding magnetic poles via the ring-shaped insulating cover, a terminal pin holding portion integrally formed with a part of the ring-shaped insulating cover and having an upper surface, and a terminal pin holding portion. A plate-shaped member provided on the upper surface between a plurality of terminal pins provided on the outermost portion, the terminal pin of the terminal pin holding portion and the stator winding of the protruding magnetic pole, and a plate-shaped member having a slack pin, and the plate-shaped member. A gap formed between the lower surface of the member and the upper surface of the terminal pin holding portion is provided, and the end line of the stator winding wound around the protruding magnetic pole forms the gap on the lower surface of the plate-shaped member. It is configured to be wound around the terminal pin.
Further, the plate-shaped part and the slack pin have a structure of any one of a torii type, an L shape, and a T shape, and a varnish is provided at the end line in the gap. Is.

Since the end wire fixing structure of the stator winding of the resolver according to the present invention is configured as described above, the following effects can be obtained.
That is, a ring-shaped stator having protruding magnetic poles formed inward at predetermined angular intervals, a ring-shaped insulating cover provided on both end faces of the ring-shaped stator, and each protruding magnetic pole via the ring-shaped insulating cover. A wound stator winding, a terminal pin holding portion integrally formed with a part of the ring-shaped insulating cover and having an upper surface, a plurality of terminal pins provided on the outermost portion of the terminal pin holding portion, and the above. A plate-shaped member provided on the upper surface between the terminal pin of the terminal pin holding portion and the stator winding of the protruding magnetic pole and having a slack pin, a lower surface of the plate-shaped member, and an upper surface of the terminal pin holding portion. A gap formed between them is provided, and the end wire of the stator winding wound around the protruding magnetic pole is wound around the terminal pin through the gap on the lower surface of the plate-shaped member. By inserting the end wire into this gap, the end wire can be fixed in a state of having slack.
Further, since the plate-shaped component and the slack pin have a structure of any one of a torii type, an L shape, and a T shape, they can be stably attached on the flat upper surface of the terminal pin holding portion.
Since the end line in the gap is provided with a varnish, the end line can be fixed more firmly with an overwhelmingly smaller amount of varnish than the conventional amount of varnish.

It is a perspective view which shows the end line fixing structure of the stator winding of a resolver by one Embodiment of this invention. It is an enlarged perspective view of the main part of FIG. It is an enlarged plan view of a part of the terminal pin of FIG. It is a top view which shows the conventional ring-shaped stator structure. It is sectional drawing of FIG.

The structure for fixing the end wire of the stator winding of the resolver according to the present invention reliably utilizes the gap without the problem of disconnection of the end wire of the stator winding due to pressing by an external force or cost increase due to an increase in the amount of varnish. It is to fix and prevent floating lines.

Hereinafter, a preferred embodiment of the end line fixing structure of the stator winding of the resolver according to the present invention will be described together with the drawings.
The same or equivalent parts as those of the conventional example will be described with the same reference numerals.
In FIG. 1, what is indicated by reference numeral 1 is a ring-shaped stator having a large number of protruding magnetic poles 2 protruding inward at predetermined angular intervals, and the first end surface 1A, the second end surface 1B, and the ring-shaped stator 1 of the ring-shaped stator 1 The protruding magnetic pole 2 is formed with a ring-shaped insulating cover 3 by injection molding while leaving the outer edge 1C of the ring-shaped stator 1.

A terminal pin holding portion 4 in which the ring-shaped insulating cover 3 is extended along the radial direction P is formed in a part of the ring-shaped stator 1, and the outer portion 4b of the terminal pin holding portion 4 is formed. , A plurality of terminal pins 7 are provided linearly at predetermined intervals.
A stator winding 8 is wound around the outer periphery of each of the protruding magnetic poles 2 via the ring-shaped insulating cover 3.

A slack pin 9 (or any other general pin may be used) is provided inside each terminal pin 7 of the terminal pin holding portion 4, and a plate-shaped member 10 is provided on the upper surface of the slack pin 9.
A small gap 11 is formed between the lower surface 10a of the plate-shaped member 10 and the upper surface 4a of the terminal pin holding portion 4 so that the end line 8a can be inserted.

Next, a case where the stator winding 8 is wound around the end line fixing structure of the stator winding of the resolver according to the present invention will be described.
First, the operation locus of the needle is programmed in an automatic winding machine (not shown) for winding the stator winding 8, winding is started from the protruding magnetic pole 2 at a predetermined origin position, and the stator is wound around each protruding magnetic pole 2. When winding the winding 8, the end line 8a of the stator winding 8 is between the lower surface 10a of the plate-shaped member 10 and the upper surface 4a of the terminal pin holding portion 4, as clearly shown in FIG. In the gap 11, the slack pin 9 comes into contact with the terminal pin 7 in a bent state (shaped like a conventional slack wire).

Since the gap 11 is close to the diameter of the end wire 8a, after the end wire 8a is wound around the terminal pin 7, the end wire 8a is already frictionally engaged with the gap 11, and therefore, under normal use conditions, It is practical without fixing the end wire 8a with a varnish or the like.
Further, when it is used in a bad environment where there is more vibration than a normal automobile or the like, it may be fixed with a varnish in addition to the above-mentioned engagement by the gap 11. The slack pin 9 and the plate-shaped member 10 may have an L-shape or a T-shape as a whole, as well as the shape of the torii shown in the figure. Further, when a small amount of varnish (conventional amount used 1/100) is supplied to the end line 8a in the gap 11, the end line 8a is held even more strongly.

The magnet wire fixing structure of the resolver according to the present invention engages and fixes the end wire in the gap between the lower surface of the plate-shaped member and the upper surface of the terminal pin holding portion, so that the end wire can be easily and inexpensively used. Can be fixed.

1 Ring-shaped stator 1A 1st end face 1B 2nd end face 2 Protruding magnetic pole 3 Ring-shaped insulation cover 4 Terminal pin holding part 4a Top surface 4b Outer part 7 Terminal pin 8 Stator winding 8a End line 9 Slack pin 10 Plate-shaped member 10a Bottom surface 11 Gap P Radial direction

Claims (3)

A ring-shaped stator (1) having protruding magnetic poles (2) formed inward at predetermined angular intervals, and a ring-shaped insulating cover (3) provided on both end faces (1A, 1B) of the ring-shaped stator (1). ), The stator winding (8) wound around the protruding magnetic poles (2) via the ring-shaped insulating cover (3), and a part of the ring-shaped insulating cover (3), which are integrally formed on the upper surface. A terminal pin holding portion (4) having (4a), a plurality of terminal pins (7) provided on the outermost portion (4b) of the terminal pin holding portion (4), and the terminal pin holding portion (4). A plate-shaped member (10) provided on the upper surface (4a) between the terminal pin (7) and the stator winding (8) of the protruding magnetic pole (2) and having a slack pin (9), and the above. A gap (11) formed between the lower surface (10a) of the plate-shaped member (10) and the upper surface (4a) of the terminal pin holding portion (4) is provided.
The end wire (8a) of the stator winding (8) wound around the protruding magnetic pole (2) passes through the gap (11) of the lower surface (10a) of the plate-shaped member (10) and the terminal pin (7). ) Wrapped around the resolver's stator winding end wire fixing structure. The end line fixing structure for a stator winding of a resolver according to claim 1, wherein the plate-shaped component and the slack pin are formed of any one of a torii type, an L shape, and a T shape. The end line fixing structure for a stator winding of a resolver according to claim 1 or 2, wherein a varnish is provided on the end line in the gap.

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