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CN-115362605-B - Rotary connector device

CN115362605BCN 115362605 BCN115362605 BCN 115362605BCN-115362605-B

Abstract

The rotary connector device (1) has a stator (10), a rotating body (20), a1 st connector (30), and a 2 nd connector (40). The rotating body (20) is provided rotatably about a rotation axis (A1) with respect to the stator (10). The 1 st connector (30) is provided to the rotating body (20). The 2 nd connector (40) is provided to the stator (10). The 1 st connector (30) includes a1 st lead block (32) attached to the rotating body (20), and a 2 nd lead block (33) which is a different member from the 1 st lead block (32) and is attached to the rotating body (20). The 1 st lead block (32) is configured to overlap at least partially with the 2 nd lead block (33) when viewed from an axial direction (D1) along the rotation axis (A1).

Inventors

  • Yamashita Kenji rodericho
  • Shinichi Hamasaki
  • The corner of the road for a long time
  • TAJIRI YOJI

Assignees

  • 古河电气工业株式会社
  • 古河AS株式会社

Dates

Publication Date
20260512
Application Date
20210216
Priority Date
20200331

Claims (13)

  1. 1. A rotary connector device, comprising: A stator; A rotating body provided rotatably about a rotation axis with respect to the stator; A 1 st connector provided to the rotating body, and A2 nd connector provided to the stator, The 1 st connector includes: A 1 st lead block mounted to the rotating body, and A2 nd lead block which is a different member from the 1 st lead block and is mounted to the rotating body, The 1 st lead block is configured to overlap at least partially with the 2 nd lead block when viewed from an axial direction along the rotation axis, The 1 st lead block includes a 1 st lead block body containing a resin material and a 1 st terminal portion containing a metal material, The 2 nd lead block includes a2 nd lead block body containing a resin material and a2 nd terminal portion containing a metal material, The 1 st lead block body is configured to at least partially overlap the 2 nd lead block body when viewed from the axial direction, The 1 st lead block body is a portion composed of a resin material, the 1 st lead block body includes an overlapping portion configured to overlap with the 2 nd lead block body when viewed from the axial direction, At least a part of the 1 st terminal portion is disposed in the overlapping portion, By disposing the overlapping portion so as to overlap at least partially with the 2 nd lead block when viewed from the axial direction, the at least a portion of the 1 st terminal portion disposed within the overlapping portion is disposed so as to overlap at least partially with the 2 nd terminal portion when viewed from the axial direction.
  2. 2. The rotary connector device according to claim 1, wherein, The 1 st lead block and the 2 nd lead block are arranged side by side in a circumferential direction defined around the rotation axis, as viewed from the axial direction.
  3. 3. The rotary connector device according to claim 1 or 2, wherein, The overlapping portion is disposed at least partially between the rotating body and the 2 nd lead block in the axial direction.
  4. 4. The rotary connector device according to claim 3, wherein, The rotating body includes a1 st ring plate and an inner cylindrical portion extending in the axial direction from an inner peripheral portion of the 1 st ring plate, The overlapping portion is disposed at least partially between the 1 st ring plate and the 2 nd lead block in the axial direction.
  5. 5. The rotary connector device according to claim 1, wherein, The 1 st terminal part comprises a plurality of 1 st bus bars arranged side by side in the 1 st direction, The 2 nd terminal portion includes a plurality of 2 nd bus bars arranged side by side in the 2 nd direction, 1 St bus bar of the plurality of 1 st bus bars is at least partially arranged within the overlapping portion, The 1 st bus bar of the plurality of 1 st bus bars arranged within the overlapping portion is arranged to overlap at least partially with 1 nd bus bar of the plurality of 2 nd bus bars when viewed from the axial direction, The 1 st bus bar of the plurality of 1 st bus bars is arranged at a position closest to the plurality of 2 nd bus bars in the 1 st direction when viewed from the axial direction, The 1 st one of the plurality of 2 nd bus bars is arranged at a position closest to the plurality of 1 st bus bars among the plurality of 2 nd bus bars in the 2 nd direction, as viewed from the axial direction.
  6. 6. The rotary connector device according to claim 5, wherein, The 1 st terminal portion includes a plurality of 1 st bus bars arranged side by side in the 1 st direction and a plurality of 1 st terminals connected to the plurality of 1 st bus bars and extending in the axial direction from the plurality of 1 st bus bars, The 2 nd terminal portion includes a plurality of 2 nd bus bars arranged side by side in a 2 nd direction and a plurality of 2 nd terminals connected to the plurality of 2 nd bus bars and extending in the axial direction from the plurality of 2 nd bus bars, 1 St bus bar of the plurality of 1 st bus bars is at least partially arranged within the overlapping portion, The 1 st bus bar of the plurality of 1 st bus bars arranged within the overlapping portion is arranged to overlap at least partially with 1 nd bus bar of the plurality of 2 nd bus bars when viewed from the axial direction, When viewed from the axial direction, 1 st terminals of the plurality of 1 st terminals corresponding to the 1 st bus bar of the plurality of 1 st bus bars are arranged offset from 1 st terminals of the plurality of 2 nd terminals corresponding to the 1 st bus bar of the plurality of 2 nd bus bars in at least 1 direction of the 1 st direction and the 2 nd direction.
  7. 7. The rotary connector device according to claim 5 or 6, wherein, The 1 st terminal portion includes a plurality of 1 st bus bars provided at least partially in the 1 st lead block main body and arranged side by side in the 1 st direction, The 1 st lead block body is a portion composed of a resin material, the 1 st lead block body includes a non-overlapping portion configured not to overlap with the 2 nd lead block body when viewed from the axial direction, The non-overlapping portion includes a1 st opening, The plurality of 1 st bus bars are at least partially exposed from the 1 st opening, The overlapping portion protrudes from the non-overlapping portion in the 1 st direction away from the 1 st opening.
  8. 8. The rotary connector device according to claim 7, wherein, The 2 nd terminal portion includes a plurality of 2 nd bus bars disposed at least partially within the 2 nd lead block main body and arranged side by side in the 2 nd direction, The 2 nd lead block body includes a2 nd opening, The plurality of 2 nd bus bars are at least partially exposed from the 2 nd opening, The overlapping portion protrudes from the non-overlapping portion toward the 2 nd opening when viewed in the axial direction.
  9. 9. The rotary connector device of claim 8, wherein, The 1 st opening and the 2 nd opening are arranged side by side in at least 1 direction of the 1 st direction and the 2 nd direction when viewed from the axial direction.
  10. 10. The rotary connector device according to claim 8 or 9, wherein, The overlapping portion is disposed at least partially between the 1 st opening and the 2 nd opening in at least 1 direction of the 1 st direction and the 2 nd direction when viewed from the axial direction.
  11. 11. The rotary connector device of claim 8, wherein, The 1 st terminal part comprises a plurality of 1 st bus bars arranged side by side in the 1 st direction, The 2 nd terminal portion includes a plurality of 2 nd bus bars arranged side by side in the 2 nd direction, 1 St bus bar of the plurality of 1 st bus bars is at least partially arranged within the overlapping portion, The 1 st bus bar of the plurality of 1 st bus bars arranged within the overlapping portion is arranged to overlap at least partially with 1 nd bus bar of the plurality of 2 nd bus bars when viewed from the axial direction, The portion of the 1 st bus bar of the plurality of 1 st bus bars overlapping the 1 st bus bar of the plurality of 2 nd bus bars extends in a direction intersecting the 1 st direction when viewed from the axial direction, A portion of the 1 st bus bar of the plurality of 2 nd bus bars overlapping the 1 st bus bar of the plurality of 1 st bus bars extends in a direction intersecting the 2 nd direction when viewed from the axial direction.
  12. 12. The rotary connector device of claim 8, wherein, The 1 st terminal portion includes a plurality of 1 st bus bars arranged side by side in the 1 st direction and a plurality of 1 st terminals connected to the plurality of 1 st bus bars and extending in the axial direction from the plurality of 1 st bus bars, The 2 nd terminal portion includes a plurality of 2 nd bus bars arranged side by side in a 2 nd direction and a plurality of 2 nd terminals connected to the plurality of 2 nd bus bars and extending in the axial direction from the plurality of 2 nd bus bars, 1 St bus bar of the plurality of 1 st bus bars is at least partially arranged within the overlapping portion, The 1 st bus bar of the plurality of 1 st bus bars arranged within the overlapping portion overlaps at least partially with 1 nd bus bar of the plurality of 2 nd bus bars when viewed from the axial direction, When viewed from the axial direction, 1 st terminals of the plurality of 1 st terminals corresponding to the 1 st bus bar of the plurality of 1 st bus bars are arranged at positions closer to the rotation axis than 1 nd terminals of the plurality of 2 nd terminals corresponding to the 1 nd bus bar of the plurality of 2 nd bus bars.
  13. 13. The rotary connector device of claim 12, wherein, The plurality of 1 st terminals are arranged side by side in the 1 st direction, The plurality of 2 nd terminals are arranged side by side in the 2 nd direction, At least 1 st terminal of the plurality of 1 st terminals is arranged between the rotation axis and at least 1 st terminal 2 nd terminal of the plurality of 2 nd terminals, as viewed from the axial direction.

Description

Rotary connector device Technical Field The disclosed technology relates to a rotary connector device. Background Patent documents 1 to 3 describe rotary connector devices including lead blocks. Prior art literature Patent literature Patent document 1 Japanese patent laid-open No. 2000-294359 Patent document 2 Japanese patent application laid-open No. 2009-158170 Patent document 3 Japanese patent application laid-open No. 2019-164953 Disclosure of Invention Problems to be solved by the invention For example, when considering increasing the number of circuits connected, it is preferable to efficiently arrange a plurality of lead blocks in a limited space. The technical problem of the present application is to provide a rotary connector device capable of efficiently disposing a plurality of lead blocks. Means for solving the problems The rotary connector device of feature 1 has a stator, a rotating body, a 1 st connector, and a2 nd connector. The rotating body is provided rotatably about a rotation axis with respect to the stator. The 1 st connector is arranged on the rotating body. The 2 nd connector is arranged on the stator. The 1 st connector includes a 1 st lead block mounted to the rotating body, and a2 nd lead block which is a different member from the 1 st lead block and is mounted to the rotating body. The 1 st lead block is configured to overlap at least partially with the 2 nd lead block when viewed from an axial direction along the rotation axis. In the rotary connector device of feature 1, the 1 st lead block is arranged to overlap at least partially with the 2 nd lead block when viewed from the axial direction along the rotation axis, and therefore, the 1 st lead block and the 2 nd lead block can be arranged efficiently. Regarding the rotary connector device of the 2 nd aspect, in the rotary connector device of the 1 st aspect, the 1 st lead block and the 2 nd lead block are arranged side by side in a circumferential direction defined around the rotation axis when viewed from the axial direction. In the rotary connector device of feature 2, the 1 st lead block and the 2 nd lead block can be more efficiently arranged. With regard to the rotary connector device of the 3 rd aspect, in the rotary connector device of the 1 st or 2 nd aspect, the 1 st lead block is arranged at least partially between the rotating body and the 2 nd lead block in the axial direction. In the rotary connector device of feature 3, at least a part of the 1 st lead block can be held between the rotary body and the 2 nd lead block. Therefore, the 1 st and 2 nd lead blocks can be efficiently arranged, and the mounting strength of the 1 st lead block can be maintained or improved. With regard to the rotary connector device of the 4 th aspect, in the rotary connector device of the 3 rd aspect, the rotary body includes the 1 st ring plate and the inner cylindrical portion extending in the axial direction from the inner peripheral portion of the 1 st ring plate. The 1 st lead block is disposed at least partially between the 1 st ring plate and the 2 nd lead block in the axial direction. In the rotary connector device of feature 4, at least a part of the 1 st lead block can be held between the 1 st ring plate and the 2 nd lead block. Therefore, the 1 st lead block and the 2 nd lead block can be efficiently arranged, and the mounting strength of the 1 st lead block with respect to the rotating body can be maintained or improved. With regard to the rotary connector device of the 5 th aspect, in any one of the 1 st to 4 th aspects, the 1 st lead block includes a 1 st lead block body containing a nonmetallic material and a 1 st terminal portion containing a metallic material. The 2 nd lead block includes a 2 nd lead block body containing a nonmetallic material and a 2 nd terminal portion containing a metallic material. The 1 st lead block body is configured to at least partially overlap the 2 nd lead block body when viewed from the axial direction. In the rotary connector device of the 5 th feature, the 1 st lead block and the 2 nd lead block can be more efficiently arranged. With regard to the rotary connector device of the 6 th aspect, in the rotary connector device of the 5 th aspect, the 1 st terminal portion is arranged to overlap at least partially with the 2 nd terminal portion when viewed from the axial direction. In the rotary connector device according to the 6 th aspect, an increase in the overall thickness of the portion where the 1 st lead block and the 2 nd lead block overlap can be suppressed. With regard to the rotary connector device of the 7 th aspect, in the rotary connector device of the 5 th or 6 th aspect, the 1 st terminal portion is provided at least partially within the 1 st lead block main body. The 2 nd terminal portion is at least partially disposed within the 2 nd lead block body. In the rotary connector device according to the 7 th aspect, the 1 st terminal portion can be integrally attached to the 1 st le