Attaching structure of resolver, dynamo-electric machine and attaching method of resolver

A resolver attaching structure for attaching a resolver to a motor, the resolver being configured to detect a rotational angle of the motor, wherein

• a rotor of the resolver is attached to a shaft of the motor, and
• a stator of the resolver is attached to an attaching portion formed at a position facing the rotor via a dimensional error absorbing means for absorbing a dimensional error of the attaching portion in both an axial and orthogonal to axial direction of the stator,
• wherein
• the attaching portion has a positioning surface extending in a direction approximately orthogonal to an axial direction of the shaft,
• an end surface on one side in an axial direction of the stator is brought into contact with the positioning surface, and
• an end surface on the other side in the axial direction of the stator is brought into contact with a cover member attached to the attaching portion via the dimensional error absorbing means,
• wherein the stator is attached to a case member which accommodates a coil portion,
• wherein the case member is contacted with an inner peripheral surface, which faces the shaft of the motor, of the cover member, and
• wherein the dimensional error absorbing means provides a pushing force to the case member along the axial direction of the shaft via the stator.

A dynamo-electric machine having a resolver detecting a rotational angle comprising:

• a rotatably provided shaft;
• a rotor of the resolver attached to the shaft;
• and
• a stator of the resolver attached to an attaching portion formed at a position facing the rotor via a dimensional error absorbing means for absorbing a dimensional error of the attaching portion in both an axial and orthogonal to axial direction of the stator,
• wherein
• the attaching portion has a positioning surface extending in a direction approximately orthogonal to an axial direction of the shaft,
• an end surface on one side in an axial direction of the stator is brought into contact with the positioning surface via the dimensional error absorbing means, and
• an end surface on the other side in the axial direction of the stator is brought into contact with a cover member attached to the attaching portion,
• wherein the stator is attached to a case member which accommodates a coil portion,
• wherein the case member is contacted with an inner peripheral surface, which faces the shaft of the motor, of the cover member, and
• wherein the dimensional error absorbing means provides a pushing force to the case member along the axial direction of the shaft via the stator.

A dynamo-electric machine having a resolver detecting a rotational angle comprising:

• a rotatably provided shaft;
• a rotor of the resolver attached to the shaft;
• and
• a stator of the resolver attached to an attaching portion formed at a position facing the rotor via a dimensional error absorbing means for absorbing a dimensional error of the attaching portion in both an axial and orthogonal to axial direction of the stator,
• wherein
• the attaching portion has a positioning surface extending in a direction approximately orthogonal to an axial direction of the shaft,
• an end surface on one side in an axial direction of the stator is brought into contact with the positioning surface, and
• an end surface on the other side in the axial direction of the stator is brought into contact with a cover member attached to the attaching portion via the dimensional error absorbing means,
• wherein the stator is attached to a case member which accommodates a coil portion,
• wherein the case member is contacted with an inner peripheral surface, which faces the shaft of the motor, of the cover member, and
• wherein the dimensional error absorbing means provides a pushing force to the case member along the axial direction of the shaft via the stator.

A resolver attaching method for attaching a resolver to a motor, the resolver being configured to detect a rotational angle of the motor, wherein

• a stator of the resolver is attached to an attaching portion formed at a position facing a rotor of the resolver via a dimensional error absorbing means, and
• a dimensional error of the attaching portion in both an axial and orthogonal to axial direction of the stator is absorbed by the dimensional error absorbing means,
• wherein
• the attaching portion has a positioning surface extending in a direction approximately orthogonal to an axial direction of the shaft,
• an end surface on one side in an axial direction of the stator is brought into contact with the positioning surface via the dimensional error absorbing means, and
• an end surface on the other side in the axial direction of the stator is brought into contact with a cover member attached to the attaching portion,
• wherein the stator is attached to a case member which accommodates a coil portion,
• wherein the case member is contacted with an inner peripheral surface, which faces the shaft of the motor, of the cover member, and
• wherein the dimensional error absorbing means provides a pushing force to the case member along the axial direction of the shaft via the stator.

A resolver attaching method for attaching a resolver to a motor, the resolver being configured to detect a rotational angle of the motor, wherein

• a stator of the resolver is attached to an attaching portion formed at a position facing a rotor of the resolver via a dimensional error absorbing means, and
• a dimensional error of the attaching portion in both an axial and orthogonal to axial direction of the stator is absorbed by the dimensional error absorbing means,
• wherein
• the attaching portion has a positioning surface extending in a direction approximately orthogonal to an axial direction of the shaft,
• an end surface on one side in an axial direction of the stator is brought into contact with the positioning surface, and
• an end surface on the other side in the axial direction of the stator is brought into contact with a cover member attached to the attaching portion via the dimensional error absorbing means,
• wherein the stator is attached to a case member which accommodates a coil portion,
• wherein the case member is contacted with an inner peripheral surface, which faces the shaft of the motor, of the cover member, and
• wherein the dimensional error absorbing means provides a pushing force to the case member along the axial direction of the shaft via the stator.