For the assembly parts of seat

For the assembly parts of seat

  • CN 102,481,868 B
  • Filed: 08/20/2010
  • Issued: 05/18/2016
  • Est. Priority Date: 08/28/2009
  • Status: Active Grant
First Claim
Patent Images

1. for assembly parts for seat, comprising:

  • the first assembly parts part (11) that forms band ring gear (17) on it, the the second assembly parts part (12) that forms the band gear (16) engaging with band ring gear (17) on it, above-mentioned two assembly parts parts (11,12) are in transmission connection each other thus, the circumferential eccentric part (27) of the be subject to rotating support driving by driver (21), so that the relative rolling movement of rotating band gear (16) and band ring gear (17), wherein in this rolling movement process, the flank of tooth (16d) of the tooth (16a) of band gear (16) is at least one contact point (K) locate to recline flank of tooth (17d) of tooth (17a) of band ring gear (17), it is characterized in that, locate the tooth (16a of band gear (16) against each other and band ring gear (17) at contact point (K), the flank of tooth (16d 17a), 17d) follow respectively the path of a part for a logarithm spiral, contact force on contact point can almost circulate to uniformity in restriction direction, and there is the effective lever arm of restriction, eccentric throw (e) is defined as the central point (M with ring gear (17)17) and band gear (16) central point (M16) between distance, wherein with respect to band gear (16) central point (M16), contact point (K) on the extension of eccentric throw (e) in the first angle (α

    ), and wherein said the first angle (α

    ) is 10 °

    to 55 °

    , the tooth (16a) of band gear (16) has than at the larger width of radially inner side at radial outside in a part of the flank of tooth (16d, 17d), and the tooth (16a) of band gear (16) is roughly trapezoidal.

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