Terminal connection structure of a resolver stator coil

• US 6,873,074 B2
• Filed: 06/26/2002
• Issued: 03/29/2005
• Est. Priority Date: 07/05/2001
• Status: Expired due to Fees

• Current Assignee: Tamagawa Seiki Kabushiki Kaisha
• Original Assignee: Tamagawa Seiki Kabushiki Kaisha
• Inventors: Mimura, Hisashi
• Primary Examiner(s): Mullins, Burton S.
• Assistant Examiner(s): NGUYEN, HANH N
• Application Number:
  US10/179,849
• Publication Number:
  US 20030006657A1
• Time in Patent Office: 1,007 Days
• Field of Search: 310/71, 310/254, 310/194
• US Class Current: 310/71
• CPC Class Codes: H02K 2203/03 Machines characterised by the wiring boards, i.e. printed circuit boards or similar structures for connecting the winding terminations
• CPC Class Codes: H02K 3/522 for generally annular cores with salient poles

Abstract

Disclosed is a terminal connection structure of a resolver stator coil in which a part of the end portion of the stator coil is left as a free end portion which is free with respect to the terminals, whereby external impact is absorbed, and rupture of the stator coil is prevented, thereby achieving an improvement in reliability. An end portion (3) of a stator coil (1) is wound around terminals (4) to form a winding connection portion (5), and a part of the end portion (3) is left as a free end portion (30) which is not integrally connected to the terminals (4) by soldering or fusing, whereby a spring function is obtained.

Claims

1. A terminal connection structure of a resolver stator coil comprising a resolver stator, a stator coil wound around each magnetic pole tooth of said stator through the intermediation of annular insulation caps, and a winding and connection portion formed by winding an end portion of said stator coil around a plurality of terminals provided in a peripheral edge portion of said insulation cap, said stator coil and said terminals being integrally connected to said winding and connection portion by one of soldering and fusing,

wherein a part of said end portion wound around said winding connection portion is left as a free end portion which is not integrally connected to said terminals by said soldering or fusing, and

further wherein said terminals are disposed so that in cross-section a peripheral portion of at least one of the terminals extends along or parallel to a radial direction of said resolver stator.

2. A terminal connection structure of a resolver stator coil according to claim 1, wherein said free end portion is wound at least one time around said terminals.

3. A terminal connection structure of a resolver stator coil according to claim 1, wherein said free end portion is wound at least a plurality of times around said terminals.

4. A terminal connection structure of a resolver stator coil according to claim 1, wherein said free end portion has a spring function and a sagging function.

7. A terminal connection structure of a resolver stator coil according to claim 1, wherein said at least one of the terminals is rectangular in cross-section and is disposed so that a long side of the rectangle extends along or parallel to the radial direction of said resolver stator.

5. A terminal connection structure of a resolver stator coil comprising a resolver stator, a stator coil wound around each magnetic pole tooth of said stator through the intermediation of annular insulation caps, and a winding and connection portion formed by winding an end portion of said stator coil around a plurality of terminals provided in a peripheral edge portion of said insulation cap, said stator coil and said terminals being integrally connected to said winding and connection portion by one of soldering and fusing, and

means for preventing breakage of said stator coil, said means for preventing breakage being disposed in said end portion and adjacent to said stator coil,

wherein said terminals are disposed so that in cross-section a peripheral portion of at least one of the terminals extends along or parallel to a radial direction of said resolver stator.

6. A terminal connection structure of a resolver stator coil according to claim 5, wherein said at least one of the terminals is rectangular in cross-section and is disposed so that a long side of the rectangle extends along or parallel to the radial direction of said resolver stator.