Door lock device for sliding doors

Abstract

The invention discloses a door lock device for a sliding plug door and solves the technical problem of poor operation stability of door lock devices. According to the key point of the technical scheme, the door lock device comprises a lock carrier, a bearing shaft and a push rod, and is characterized in that the lock carrier is in pin joint with a lock fork with a buffer slot and a lock slot, the bearing shaft is provided with bearing torsional springs and a shifting claw, the number of the bearing torsional springs is an even number, the bearing torsional springs are arranged at two sides of the shifting claw, the shifting claw props against the lock fork by the bearing torsional spring; under the driving of the push rod, the lock fork rotates around a pin joint point and the shifting claw is sequentially clamped into the buffer slot and the lock slot; the bearing shaft is provided with a manual unlocking mechanism and an automatic unlocking mechanism for driving the shifting claw to be screwed out of the lock slot; the shifting claw is fixed on a reset disc; the rest disc is arranged at the square shaft of the bearing shaft; and the bearing shaft is sleeved with a self-lubricating shaft sleeve fixed on the lock carrier, and therefore, connection of internal components of the door lock devices is steady and component transmission is steady.

Description

technical field [0001] The present invention relates to the mechanical component of rail car and bus, more specifically, it relates to a kind of door lock mechanism of rail car and bus. Background technique [0002] Compared with the inner swing door and the sliding door, the sliding door for the vehicle is opened from the inside of the compartment to the outside of the compartment, and the door will not be blocked due to the crowding of passengers in the compartment. It is more and more widely used in subway light rail and public transport vehicles. [0003] A Chinese patent document with the publication number CN201546535U has now been retrieved for the automatic lock of the sliding door. It is recorded in the patent document that the lock fork is not provided with a deceleration buffer mechanism in the middle of its rotation, resulting in a large impact on the kinetic energy rollers of the lock fork when it rotates. The lock fork and its connecting mechanism cause damage...

AI Technical Summary

Problems solved by technology

[0003] A Chinese patent document with the publication number CN201546535U has now been retrieved for the automatic lock of the sliding door. It is recorded in the patent document that the lock fork is not provided with a deceleration buffer mechanism in the middle of its rotation, resulting in a large impact on the kinetic energy rollers of the lock fork when it is rotating, which is easy to use. The lock fork and its connecting mechanism cause damage, resulting in unstable operation of the lock and connecting mechanism

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