Limiting mechanism for mobile door lock

Abstract

The invention relates to a spacing device of shift door lock, comprising lock shell, dialing wheel fixed in the lock shell and locating plate. The dialing arm is set at the side of dialing wheel and a fork is set at the side of locating plate. The invention also comprises three rings of special-shape spring. The head end of special-shape spring is fixed on the dialing arm and the tail end is fixed on the lock shell. The dialing arm extends into the fork to form the dialing connection. Other mechanism matched with the spacing device of shift door lock also comprises lock tongue accommodated in the lock shell and locating shaft for lock tongue. The top of lock tongue can be fixed on the locating shaft in rotation. A boss is set in the middle of lock tongue and inserts into the hole set in the locating plate to form the swinging-arm mechanism. Two long-strip sliding groove ports are set in the middle of locating plate and by two long-strip sliding groove the locating plate can be mated on the locating shaft of lock tongue and the spring guiding shaft in slide so that the locating plate slides along the track limited by said locating shaft of spring and said locating shaft of lock tongue. The invention can be applied in shift door lock needed in various shift doors.

Description

technical field [0001] The invention relates to a sliding door lock, in particular to a position limiting mechanism of a sliding door lock. Background technique [0002] As shown in Figure 1, the existing sliding door lock includes a lock housing 1, a hook-shaped dead bolt 8, a positioning plate 7, a toggle wheel 3, a limit arm 20, a limit arm return spring 21 and a locking mechanism fixed on the lock housing. The positioning plate guide shaft 60 and the dead bolt positioning shaft 9 in 1, the dead bolt 8, the positioning plate 7, the limit arm 20, the limit arm return spring 21 and the toggle wheel 3 are accommodated in the lock housing 1; It is rotatably fixed on the deadbolt positioning shaft 9, and a boss is set in the middle and inserted into the hole provided in the positioning plate 7 to form a rocker mechanism; one side of the positioning plate 7 is provided with a transmission fork 71, and two long forks are arranged in the middle. Strip-shaped sliding notches 72, ...

AI Technical Summary

Problems solved by technology

Since the protruding head 30 of the toggle wheel 3 directly pushes the arc end 201 of the limiting arm 20, which is a rigid mechanical connection, the mechanical friction between the two, the resistance of the knob or the lock cylinder is large when rotating, so it is not only easy to wear, but also feels heavy and rigid. complex

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