Door drive

Door drive

  • CN 1,692,209 B
  • Filed: 07/24/2003
  • Issued: 01/20/2016
  • Est. Priority Date: 07/31/2002
  • Status: Active Grant
First Claim
Patent Images

1. the door drive on a rail vehicle, there is a spindle gearing, the main shaft of described spindle gearing is connected with a freewheel, described freewheel allows main shaft rotate along the direction corresponding to the closing direction of door and stop main shaft to rotate along the direction corresponding with the opening direction of door, wherein, the part away from main shaft of freewheel rotatably supports, but can by a section magnetism (8 by one, 8 '"'"') active force that the clutch unclamped or brake overcome at least one holddown spring (5) is releasably fixed relative to a back-off assembly (2), and described brake or clutch are fixed and maybe can be fixed on its enable possition, it is characterized by:

  • be provided with a closed magnet for brake described in locking or clutch, described clutch or brake are handled by a connecting rod (9), and between the released position of connecting rod (9) and the lock position of connecting rod (9), there is a dead-centre position, described connecting rod (9) has a lever, described lever can rotate around an axis (12), section magnetism (8) to rabbet directly or indirectly on the one arm of described lever and its another arm directly or indirectly with some rollers (10), described roller comprises in alignment, the rotation parallel with axis (12), the part movable between released position and lock position of clutch or brake is taken to released position from lock position by described roller, and when the direction of motion of the part of the activity of the joint face between the rotation and axis (12) of roller (10) and clutch or brake is parallel, arrive dead-centre position.

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