JP6085141B2 - Resolver connector structure - Google Patents

Description

  The present invention relates to a resolver connector structure.

  Conventionally, a resolver is known in which a wire harness drawn from a resolver stator is routed inside a case and connected to a connector provided in the case (see, for example, Patent Document 1).

JP 2007-336714 A

By the way, according to the resolver according to the above prior art, the noise of the detection signal flowing through the wire harness is increased and the detection accuracy of the resolver is improved by the wire harness between the resolver stator and the connector acting as an antenna. There is a possibility of not being able to.
Moreover, since a predetermined space is required to properly wire the wire harness inside the case, there arises a problem that the case cannot be reduced in size.
In addition, there is a possibility that the rotor of the motor and the wire harness interfere with each other inside the case. If a structure for protecting the harness is required to avoid this interference, there arises a problem that the configuration becomes complicated.
In addition, there is a need for a process and procedure for attaching the wire harness at the time of manufacture, and there is a risk of disconnection of the wiring and wiring errors. If a wiring disconnection or wiring error occurs, remove the resolver and motor from the case. There arises a problem that it is necessary to remove it, which is troublesome.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a resolver connector structure capable of ensuring desired detection accuracy while preventing a complicated configuration and an increase in size.

In order to solve the above-described problems and achieve the object, a resolver connector structure according to a first invention of the present invention has an outer peripheral portion (for example, implementation) of a resolver stator (for example, resolver stator 12 in the embodiment). Insulating connector member (for example, connector member 13 in the embodiment) integrally formed so as to continuously extend from the outer peripheral portion 12c) to the outside, and the inside of the connector member A conductive rod-shaped conductor (for example, the rod-shaped conductor 14 in the embodiment) fixed to the connector member, and the rod-shaped conductor has one end portion (for example, the one end portion 14a in the embodiment) of the connector member. A front end portion (for example, the front end portion 22 in the embodiment) is exposed to the outside, and the other end portion (for example, the other end portion 14b in the embodiment) is connected to the base end portion (for example, the implementation portion) of the connector member. In form The connector 20 is bent at a curved portion (for example, the first curved portion 14c in the embodiment) provided between the one end portion and the other end portion. Are formed so as to cut out a part of the connector member and expose the curved portion of the rod-shaped conductor to the outside (for example, the exposed portion 24 in the embodiment), and the exposed portion is filled. A sealing material (for example, the sealing material 25 in the embodiment) that seals between the connector member and the rod-shaped conductor, and the curved portion is buried in the sealing material at the exposed portion The exposed portion is the curved portion between the one end portion and the other end portion of the rod-shaped conductor, and is an outer peripheral portion of the resolver stator (for example, the outer peripheral portion 12c in the embodiment). The base end of the connector member continuous with And it is provided on.

  According to the resolver connector structure of the first aspect of the present invention, the conductive rod-shaped conductor is fixed inside the connector member formed integrally with the resolver stator, thereby preventing the configuration from becoming complicated and large. However, desired detection accuracy can be ensured.

  Since the conductive rod-shaped conductor is fixed inside the connector member, it is possible to prevent a wiring error from occurring during manufacturing and to suppress the disconnection of the wiring. In addition, since the connector member is formed integrally with the resolver stator, the steps and procedures required at the time of manufacture can be simplified.

In addition, the housing that accommodates the resolver can be reduced in size, and interference between the rotor of the motor accommodated in the housing and the conductive rod-shaped conductor can be prevented. It can be prevented from becoming complicated.
Further, when the resolver stator is abnormal, it can be dealt with by removing only the resolver stator from the housing, and it is possible to prevent troublesome work.

  Furthermore, it is possible to suppress an increase in noise of the detection signal flowing through the conductive rod-shaped conductor and improve the detection accuracy of the resolver.

In addition, since the gap between the connector member and the rod-shaped conductor is sealed with a sealing material, even if a liquid for lubrication or pressure action is sealed inside the housing that accommodates the resolver, this It is possible to prevent liquid from leaking from between the connector member and the rod-shaped conductor to the outside of the housing.
Moreover, since the rod-shaped conductor is sealed by the sealing material at the curved portion between the one end portion and the other end portion, it is possible to prevent the occurrence of connection abnormality due to thermal shock and the increase in size of the connector member.

  Further, when the connector member is molded by injection molding or the like, the curved portion of the rod-shaped conductor can be held at the exposed portion, and the workability during manufacturing can be improved.

It is sectional drawing which shows a part of case which supports the stator of the resolver which concerns on embodiment of this invention. It is sectional drawing of the connector structure of the resolver which concerns on embodiment of this invention. It is a perspective view of the stator of the resolver which concerns on embodiment of this invention. It is a perspective view of the connector structure of the resolver concerning an embodiment of the invention. It is the top view which looked at the stator of the resolver which concerns on embodiment of this invention from the inner side of the case. It is the top view which looked at the stator of the resolver which concerns on embodiment of this invention from the exterior side of the case. It is sectional drawing of the connector structure of the resolver which concerns on the modification of embodiment of this invention.

  A resolver connector structure according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

The resolver connector structure 10 according to the present embodiment includes a rotation angle (that is, a predetermined reference) of a rotor (not shown) of a motor (not shown) housed in a housing 11 as shown in FIGS. It is provided in a resolver stator 12 of a resolver (not shown) for detecting a rotation angle of a rotor magnetic pole from a rotation position.
The resolver connector structure 10 includes an insulating connector member 13 integrally formed so as to continuously extend from an outer peripheral portion 12 c of a stator holder 12 b that holds a stator core 12 a of a resolver stator 12, and a connector member 13. And a conductive rod-like conductor 14 fixed inside.

  The resolver includes a resolver rotor (not shown) that is fixed to the rotating shaft of the rotor of the motor and rotates together with the rotor, and a resolver stator 12 that is disposed opposite to the resolver rotor and has a coil (not shown). Yes.

The connector member 13 extends from the base end portion 20 continuous with the outer peripheral portion 12 c of the resolver stator 12 accommodated in the housing 11 toward the radially outward connector curved portion 21, and the resolver stator 12 is connected to the connector curved portion 21. Is bent toward one end 22 in the axial direction of the central axis O.
The distal end portion 22 protrudes outside from the housing 11 and can be connected to a control unit (not shown).

The connector member 13 includes an annular seal member 23 disposed on the outer peripheral surface of the connector curved portion 21.
The seal member 23 includes an inner surface of the mounting portion 11a and an outer peripheral surface of the connector bending portion 21 between the mounting portion 11a formed of a through hole provided in the housing 11 and the connector curved portion 21 inserted into the mounting portion 11a. Seal between.

The rod-shaped conductor 14 has one end portion 14a exposed to the outside at the tip end portion 22 of the connector member 13 at one end in the axial direction of the central axis O of the resolver stator 12 and the other end portion 14b at the other end in the axial direction. The base end 20 protrudes outward from the other surface 13A.
The rod-shaped conductor 14 extends from the other end portion 14b toward one side in the axial direction, bends radially outward at the first curved portion 14c, and further toward one end portion 14a in the axial direction at the second curved portion 14d. bent.

  One end portion 14a of the rod-shaped conductor 14 is a terminal when the distal end portion 22 of the connector member 13 is connected to a control unit (not shown) and the other end portion 14b is a terminal to which a coil of the resolver stator 12 is connected. Is done.

The six rod-shaped conductors 14 are fixed inside the connector member 13, and the other end portion 14b of the six rod-shaped conductors 14 is connected to both ends of a primary coil (not shown) of the resolver stator 12 and two Both ends of a secondary coil (not shown) are connected.
The primary coil passes a reference signal such as a sine wave input from the outside, and the two secondary coils are arranged so that the phase difference between them is 90 °, and detection according to the rotation angle of the resolver rotor Output a signal.

  The connector member 13 is formed so as to be partly cut off on the surface 13B on one side in the axial direction of the central axis O of the resolver stator 12 and exposes the first curved portion 14c of the rod-shaped conductor 14 to the outside. And a sealing material 25 that fills the exposed portion 24 and seals between the connector member 13 and the rod-shaped conductor 14.

  The exposed portion 24 is provided at a proximal end portion 20 of the connector member 13 that is continuous with the outer peripheral portion 12c of the resolver stator 12 (for example, a location closer to the resolver stator 12 than the connector curved portion 21).

  As described above, according to the resolver connector structure 10 according to the present embodiment, the rod-shaped conductor 14 is fixed inside the connector member 13 formed integrally with the resolver stator 12, thereby making the configuration complicated and large. Thus, it is possible to ensure desired detection accuracy.

Since the conductive rod-shaped conductor 14 is fixed inside the connector member 13, for example, compared to the case where a wire harness is used, it is possible to prevent a wiring error from occurring at the time of manufacture and to cause a disconnection of the wiring. Can be suppressed.
Moreover, since the connector member 13 is integrally formed with the resolver stator 12, it is possible to prevent the occurrence of wiring errors and simplify the steps and procedures required during manufacturing.

Furthermore, wiring arrangement in the housing 11 is unnecessary, the housing 11 can be downsized, and interference with the rotor of the motor accommodated in the housing 11 can be prevented. It is possible to prevent the configuration from becoming complicated.
Further, when the resolver stator 12 is abnormal, it can be dealt with by removing only the resolver stator 12 from the housing 11, and it is possible to prevent troublesome work.

  Furthermore, it is possible to suppress an increase in noise of the detection signal flowing through the rod-shaped conductor 14 and improve detection accuracy.

  Further, since the gap between the connector member 13 and the rod-shaped conductor 14 is sealed by the sealing material 25, even when the liquid for lubrication or pressure action is sealed inside the housing 11, this It is possible to prevent liquid from leaking from between the connector member 13 and the rod-shaped conductor 14 to the outside of the housing 11.

  Further, since the rod-shaped conductor 14 is sealed by the sealing material 25 at the first curved portion 14c, the connection by thermal shock is compared to the case where, for example, one end 14a or the other end 14b of the rod-shaped conductor 14 is sealed by the sealing material 25 The occurrence of abnormality and the increase in size of the connector member 13 can be prevented.

That is, when it is necessary to provide a space required for filling the sealing material 25 at the one end portion 14a of the rod-like conductor 14 connected to a control unit (not shown) outside the housing 11, the tip portion 22 of the connector member 13 The problem that the part 22 enlarges arises.
On the other hand, if the other end portion 14b of the rod-like conductor 14 to which the coil of the resolver stator 12 is connected is sealed with the sealing material 25, the coil may be disconnected due to thermal shock.
On the other hand, the gap between the one end portion 14a and the other end portion 14b of the rod-shaped conductor 14 is sealed with the sealing material 25, thereby preventing the occurrence of abnormal connection due to thermal shock and the increase in size of the connector member 13. .

  Further, when the connector member 13 is molded by injection molding or the like, the first curved portion 14c of the rod-shaped conductor 14 can be held in the exposed portion 24, and workability during manufacturing can be improved.

In the above-described embodiment, the exposed portion 24 that exposes the first curved portion 14c of the rod-shaped conductor 14 is filled with the sealing material 25. However, the present invention is not limited to this. Like the second curved portion 14d, an appropriate portion between the one end portion 14a and the other end portion 14b may be exposed to the outside from the connector member 13, and the exposed portion may be filled with the sealing material 25. .

  In the above-described embodiment, the distal end portion 22 of the connector member 13 and the one end portion 14a of the rod-shaped conductor 14 project outward from the housing 11 in the axial direction of the resolver stator 12, but the present invention is not limited thereto. In another direction, for example, radially outward as in the modification shown in FIG.

  The present embodiment described above shows an example in carrying out the present invention, and it goes without saying that the present invention is not construed as being limited to the above-described embodiment.

DESCRIPTION OF SYMBOLS 10 Resolver connector structure 11 Housing 12 Resolver stator 12c Outer peripheral part 13 Connector member 14 Rod-shaped conductor 14a One end part 14b Other end part 14c 1st curved part (curved part)
20 Base end portion 21 Connector curved portion 22 Tip portion 24 Exposed portion 25 Sealing material

Claims (1)

An insulating connector member integrally formed so as to continuously extend from the outer periphery of the resolver stator toward the outside;
A conductive rod-shaped conductor fixed inside the connector member,
The rod-shaped conductor has one end portion exposed to the outside from the distal end portion of the connector member, and the other end portion projected to the outside from the base end portion of the connector member, and between the one end portion and the other end portion. It is bent at the music part provided in
The connector member is formed so as to cut out a part of the connector member and exposes the curved portion of the rod-shaped conductor to the outside, and the exposed portion fills the connector member and the rod-shaped conductor. A sealing material that seals between,
With
The curved portion is disposed in the exposed portion in a state of being buried in the sealing material ,
The exposed portion is the curved portion between the one end portion and the other end portion of the rod-shaped conductor, and is provided at the base end portion of the connector member that is continuous with the outer peripheral portion of the resolver stator . A resolver connector structure.

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