JP7391378B2 - Outer rotor resolver - Google Patents

Description

The present invention relates to an outer rotor type resolver, and in particular, uses welding when attaching the signal input/output connector above the protruding magnetic pole afterward to prevent the signal input/output connector from falling off due to vibration during use. Concerning new improvements for.

An example of this kind of outer rotor type resolver that has been used in the past is the "variable reluctance type resolver" disclosed in Patent Document 1.
In the first conventional configuration of Patent Document 1, no winding is wound around the protruding magnetic pole at the position where the connector or harness is attached.
In addition, in an outer rotor type resolver having a second conventional configuration (not shown), although the name of the literature disclosing this structure cannot be indicated, a connector is attached to the ring-shaped insulating part of the ring-shaped stator using a metal fitting such as a rivet. Or the harness was fixed.

Japanese Patent Application Publication No. 2016-152677

Since the conventional configuration was configured as described above, the following problems existed.
That is, in the case of the first conventional configuration disclosed in the above-mentioned Patent Document 1, the stator winding cannot be wound around a total of about three protruding magnetic poles corresponding to the positions where the connector or the harness is provided. It was not possible to provide an excitation winding and an output winding for the wire.

In addition, in the configuration in which the connector or harness is riveted in the second conventional configuration described above, the ring-shaped insulating cover to which the rivet is fastened may have a girth row, which poses problems in durability and reliability.
Furthermore, in both the first and second conventional configurations, there is a problem in the strength of attachment of the connector or harness to the annular stator.Usually, when installed in a hybrid vehicle, the vibration of the vehicle body is caused in the vibration direction shown in FIG. A, if the limit of the attachment part of the connector or harness was exceeded, there was a risk that the connector or harness would be damaged and fall.

The present invention has been made to solve the above-mentioned problems, and in particular, by using welding when attaching a signal input/output connection body later on above the protruding magnetic pole, the signal input/output connection during use is improved. The purpose is to prevent the body from falling off.

The outer rotor type resolver according to the present invention includes a ring-shaped stator having a large number of protruding magnetic poles protruding outward at predetermined angular intervals, and a stator winding wound around each of the protruding magnetic poles via a ring-shaped insulating cover. an outer rotor comprising: a signal input/output connection body that is retrofitted after winding of the stator winding so as to straddle the stator winding; and an outer rotor that is rotatably provided outside of each of the protruding magnetic poles. In the type resolver, the pair of welding tongue pieces formed at the lower part of the signal input/output connection body and the welding extension part formed on the ring-shaped insulating cover located on the outer periphery of the protruding magnetic pole are integrated by welding. Further, the welding extension part is formed in an ear part formed on the annular insulating cover located at the protruding magnetic pole, and the signal input/output connection A plurality of pins are formed in a lower part of the body to hang vertically, and a plurality of mounting holes are formed in an inner edge of the annular stator, and the pins are inserted into the mounting holes. In addition, the signal input/output connection body is composed of a wire harness.

Since the outer rotor type resolver according to the present invention is configured as described above, the following effects can be obtained.
In other words, a signal input/output connection body consisting of a wire harness is placed above a plurality of protruding magnetic poles around which stator windings are wound, and a pair of welding tongues are welded to an extended portion of an annular insulating cover. It has great strength against shaking, ensuring long durability and reliability.

1 is a schematic plan view showing the overall configuration of an outer rotor type resolver according to an embodiment of the present invention. FIG. 2 is a front view of FIG. 1; FIG. 3 is a perspective view of the main part of FIG. 2; FIG. 3 is a vertical cross-sectional view of the main part of FIG. 2; 3 is an enlarged detailed perspective view of FIG. 2; FIG. FIG. 3 is an enlarged detailed front view of the main part of FIG. 2; FIG. 7 is an enlarged plan view of the main part of FIG. 6; FIG. 6 is an enlarged plan view of the main part of FIG. 5; FIG. 6 is a perspective view showing a state in which the signal input/output connection body of FIG. 5 is welded to a ring-shaped stator. 10 is an enlarged front view showing the main part of FIG. 9. FIG.

The outer rotor type resolver according to the present invention can prevent the signal input/output connector from falling off due to vibration during use by using welding when attaching the signal input/output connector above the protruding magnetic pole later. It is the composition.

Hereinafter, preferred embodiments of an outer rotor type resolver according to the present invention will be described with reference to the drawings.
In FIG. 1, the reference numeral 1 indicates a ring-shaped stator having a large number of protruding magnetic poles 2 that protrude outward at predetermined angular intervals. The stator winding 5 is wound through.

On the outside of the annular stator 1, an outer rotor 6 having, for example, a shaft angle multiplier of 1X on its inner surface is rotatably provided, thereby forming an outer rotor type resolver 10.
The stator winding 5 consisting of an output winding and an excitation winding, which was wound around all the protruding magnetic poles 2 formed around the entire circumference of the annular stator 1, is connected to a plurality of intermediate pins 11 as shown in FIG. connected.

As shown in FIG. 5, above the three protruding magnetic poles 2, a signal input/output connector 12 forming a harness having a plurality of lead wires 50 is disposed astride each of the protruding magnetic poles 2. Welding tongues 13, 13 shaped like wings spread laterally are formed on both sides of the signal input/output connector 12.
As shown in FIG. 6, welding ribs 13B, 13B consisting of protrusions for facilitating welding are formed on the welding surfaces 13A, 13A of each of the welding tongues 13, 13.

As shown in FIG. 7, each ear portion 3A of the first and second protruding magnetic poles 2A and 2B corresponding to the welding rib 13B of each welding tongue piece 13 is arranged in the radial direction and circumferential direction of the annular stator 1. It has a welding expansion part 3Aa that is expanded (thick-walled) along the direction.
Between each of the welding extension parts 3Aa, a shape having the same shape as the ear part 3A of the other protruding magnetic pole 2 formed when the ring-shaped insulating covers 3 and 4 are insert-molded to the ring-shaped stator 1 is formed. However, in the case of the welding extension part 3Aa, a part of the mold is, for example, " By forming a counterbore-shaped deformed portion, the annular stator 1 having the annular insulating covers 3 and 4 can be formed.

A plurality of pin-shaped legs 14, 14 are formed at the lower part of the signal input/output connector 12, and the legs 14, 14 are spaced apart from each other on the inner edge 1M of the annular stator 1. By being inserted into the pair of formed attachment holes 15, 15, the attachment strength to the annular stator 1 is increased.

In the above-described configuration, the annular insulating cover 3 is insert-molded to each of the protruding magnetic poles 2, the stator winding 5 is wound around each of the protruding magnetic poles 2, and a tangle is attached to each of the intermediate pins 11. When the legs 14 of the signal input/output connector 12 are inserted and pushed into the mounting holes 15 in the state shown in FIG. At the same time, the welding ribs 13B, 13B of the welding tongues 13, 13 come into contact with the welding extensions 3Aa of the pair of ears 3A, 3A.

When the welding extension part 3Aa is heated by a resin welding machine (not shown) in the above-mentioned abutting state, the welding ribs 13B, 13B are melted, and the welding extension parts 3Aa, 3Aa are also slightly melted at the same time. When the resin welding machine stops heating, the welding extensions 3Aa, 3Aa and the welding tongues 13, 13 are firmly integrated into one body via the welding ribs 13B, 13B. Welded.
In the case described above, since the legs 14, 14 of the signal input/output connector 12 are inserted into the respective mounting holes 15 as described above, the signal input/output connector 12 and the annular stator The bond with 1 becomes extremely strong.

Therefore, even if the outer rotor type resolver 10 according to the present invention is installed in the engine of a hybrid vehicle and the outer rotor type resolver 10 vibrates along the vibration direction A as shown in FIG. The body 12 never separates from the outer rotor type resolver 10.

In addition, the six intermediate pins 11 provided on the annular stator 1 extend downward from the annular stator 1, and the six lower terminals 20 extend downward from the annular stator 1, as shown in FIGS. It protrudes outward from the central protruding magnetic pole 2.
The signal input/output connector 12 is provided with a female terminal 12a for engaging with each lead wire 50, and each protruding terminal 12b is integrally connected to each female terminal 12a.
Therefore, when the signal input/output connector 12 is coupled to the annular stator 1 as shown in FIG. 2, each of the protruding terminals 12b integrally connected to each of the female terminals 12a is The pins 11 are respectively engaged and connected.

The end wires of the stator windings 5 (shown in FIG. 1) wound around all the other protruding magnetic poles 2 are connected to each of the lower terminals 20 shown in FIG. 6.
Therefore, the input/output signals at the lower terminal 20 are electrically connected to each female terminal 12a of the signal input/output connector 12, as shown in FIG. It is configured so that signals can be sent in and out using lead wires 50.
In this configuration, the case where a well-known wire harness is used as the signal input/output connector 12 has been described, but the same applies when a well-known connector configured in a shape similar to that shown in FIG. 6 is used, for example. Needless to say, it is possible to obtain the following effects.

The outer rotor type resolver according to the present invention includes a ring-shaped stator having a large number of protruding magnetic poles protruding outward at predetermined angular intervals, and a stator winding wound around each of the protruding magnetic poles via a ring-shaped insulating cover. and a signal input/output connection body consisting of a harness that is retrofitted so as to straddle the stator winding after the stator winding is wound, and an outer rotor that is rotatably provided on the outside of each of the protruding magnetic poles. In the outer rotor type resolver, a pair of welding tongue pieces formed at the lower part of the signal input/output connection body and a welding extension part formed on the ring-shaped insulating cover located on the outer periphery of the protruding magnetic pole are: Since the signal input/output connection body and the ring-shaped insulating cover are integrally connected by welding, strong attachment can be achieved by welding the signal input/output connection body and the ring-shaped insulating cover.
Further, the welding extension part is formed on the ear part formed on the annular insulating cover located on the protruding magnetic pole, so that simple and strong welding can be achieved.

1 Ring-shaped stator 1M Inner edge 2 Protruding magnetic poles 3, 4 Ring-shaped insulation cover 3A Ear part 3Aa Extension part for welding 5 Stator winding 6 Outer rotor 10 Outer rotor type resolver 11 Intermediate pin 12 Signal input/output connection body 12a Female terminal 12b Protrusion Terminal 13 Welding tongue piece 13A Welding surface 13B Welding rib 14 Foot portion 15 Mounting hole 20 Lower terminal

Claims (4)

A ring-shaped stator (1) having a large number of protruding magnetic poles (2) protruding outward at predetermined angular intervals, and a ring-shaped insulating cover (3, 4) wound around each of the protruding magnetic poles (2). the stator winding (5), a signal input/output connection body (12) retrofitted so as to straddle the stator winding (5) after the stator winding (5) has been wound, and each of the protruding magnetic poles. In an outer rotor type resolver consisting of an outer rotor (6) rotatably provided on the outside of (2),
A pair of welding tongues (13) formed at the lower part of the signal input/output connection body (12), and a ring-shaped insulating cover (3, 4) located at the outer periphery of the protruding magnetic pole (2). The welding extension part (3Aa) is an outer rotor type resolver characterized in that it is configured to be integrally connected by welding. Claim 1, wherein the welding extension (3Aa) is formed in an ear (3A) formed on the annular insulating cover (3, 4) located on the protruding magnetic pole (2). Outer rotor type resolver described. A plurality of feet (14) are formed to hang vertically below the signal input/output connection body (12), and a plurality of mounting holes are formed in the inner edge (1M) of the annular stator (1). (15), and the foot part (14) is inserted into the said attachment hole (15), The outer rotor type resolver of Claim 1 or 2 characterized by the above-mentioned. The outer rotor type resolver according to any one of claims 1 to 3, wherein the signal input/output connector comprises a connector or a wire harness.

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