Electric parking lock device

  • US 6,273,232 B1
  • Filed: 09/07/1999
  • Issued: 08/14/2001
  • Est. Priority Date: 09/09/1998
  • Status: Expired due to Fees
First Claim
Patent Images

1. An electric parking lock device, comprising:

  • a drive source generating a drive force so that a parking lock pawl engages with and release from a parking lock gear in response to an output from a parking command means;

    spring means provided along a force transmission path between an output end of said drive source and an input end of said parking lock pawl, for generating a biasing force directed so as to bring said parking lock pawl into engagement with said parking lock gear, said spring means being maintained without deflecting until said parking lock pawl is at least engaged with said parking lock gear when a force which is directed to bring said parking lock pawl into engagement with said parking lock gear is applied to said parking lock pawl, said spring means being deflectable by a distance equal to a stroke sufficient for at least releasing said parking lock pawl from said parking lock gear when a force which is directed so as to release said parking lock pawl from said parking lock gear is applied to said parking lock pawl; and

    manual lock release means for applying a force directed to release said parking lock pawl from said parking lock gear at said force transmission path on a side thereof which is closer to said input end of said parking lock pawl than to said spring means.

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