An unlocking device and access door thereof

Abstract

The invention discloses an unlocking device. The unlocking device comprises a support, a sliding block, a panel and fixing blocks, and further comprises a locking gear, wherein the fixing blocks are arranged in a gap between the support and the panel and are fixedly connected to the support and the panel at the same time, and the locking gear is arranged on the support, is located between the space between the two fixing blocks and can rotate at least 90 degrees; the two fixing blocks are fixed to the upper portions and the lower portions of the support and the panel; the two ends of the sliding block are connected to the upper fixing block and the lower fixing block in a clamped mode and can slide on the fixing blocks in the transverse direction; the sliding block is attached to the locking gear, in an locked state, the sliding block and the locking gear have the overlapping width W; in the unlocked state, the sliding block slides transversely, and the rotating space of the locking gear is vacated; and a lock capable of driving the sliding block to slide transversely is arranged on the panel. According to the unlocking device, a plug is rotated through a general key, unlocking canbe realized through tiny displacement, the structure is simple and compact, the unlocking device is suitable for multiple occasions, complicated mechanical devices and parts easy to fail do not exist, the structure of the locking gear is stable, the reliability is high, the installation is simple, and the maintenance is convenient.

Description

technical field [0001] The invention belongs to the field of rail vehicle design, and in particular relates to an unlocking device and a passage door thereof. Background technique [0002] Passenger compartment access doors and driver's compartment doors of rail transit vehicles are usually equipped with a set of mechanical unlocking devices to quickly unlock the access doors in order to allow staff and passengers to pass quickly when the door lock fails or an emergency occurs. [0003] The invention patent with application number CN201120335992 discloses an emergency unlocking device for a rail vehicle driver's cab door. The device is provided with a rotary handle on the partition wall where the door is located, and the handle is connected to the locking mechanism through a wire rope. When the handle is rotated, the wire rope drives the block to move upwards to realize the unlocking of the car door. [0004] The patent of invention with the application number CN20112052988...

AI Technical Summary

Problems solved by technology

This type of unlocking device has many parts, complex structure, many transmission links, high assembly requirements, difficult installation and maintenance, and the unlocking device is prone to failure after being impacted by the lock tongue for a long time during operation.

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