Lock structure of train door

Abstract

The invention relates to a lock structure of a train door. The lock structure comprises a lock body, a push rod assembly, a lock pin assembly and a lock rod assembly. An unlocking plate of the push rod assembly is installed at the front end of a push rod. A lock shaft is installed on the push rod. A non-return stop piece of the lock pin assembly is installed on a pin body of the lock pin. A lock rod of the lock rod assembly is connected with a lock disc. The lock disc is installed in the lock body and rotates. A transmission pin on the lock disc is embedded in a transmission slot of the lock pin. The rotation movement of the lock disc is converted into the linear movement of the lock pin, a to-be-locked part drives the push rod to move through the unlocking plate so that the lock shaft can be disengaged from a locking slot, the lock pin in the unlocked state is driven by the lock rod assembly to move linearly, the non-return stop piece is driven to move, and the to-be-locked part is limited. The lock structure has the beneficial effects that the movement of all parts of the lock structure is low pair movement, the parts only need to be capable of flexibly moving, and therefore machining and manufacturing are quite convenient and easy, the production cost is low, and operation, control and use are simpler and more convenient.

Description

technical field [0001] The invention relates to a lock structure of a train door. Background technique [0002] Chinese patent document CN201391153Y discloses a kind of isolating lock of rail train electric sliding door, and this isolating lock has the following several technical defects: [0003] 1. The unlocking structure of the isolating lock is complex: the unlocking of the isolating lock is realized by the movement of two rods passing through the circular arc groove, one of which acts as a guide and the other acts as a lock. This structure requires many parts, and the fixing method of the whole part is also installed at the unlocking place, resulting in too many parts that need to be processed and assembled in a limited space, which will increase the difficulty of processing and assembling. [0004] 2. The lock pin assembly of the isolation lock cannot be positioned accurately: the isolation lock determines the rotation angle of the lock shaft by limiting the stroke po...

AI Technical Summary

Problems solved by technology

This structure requires many parts, and the fixing method of the whole part is also installed at the unlocking place, resulting in too many parts that need to be processed and assembled in a limited space, which will increase the difficulty of processing and assembly

[0004] 2. The lock pin assembly of the isolation lock cannot be positioned accurately: the isolation lock determines the rotation angle of the lock shaft by limiting the stroke position of the lock pin assembly. This method has high requirements for processing, design, and has large errors after installation. The exact angle value cannot be guaranteed, and there will be impact between the stoppers during operation, which affects the reliability of the components

[0005] 3. The installation position of the magnet is unreasonable: the magnet used to collect the state of the isolation lock is installed inside the component and placed at the bottom, and cannot be seen visually after installation

If this mechanism fails, it is impossible to judge whether it is the problem of the magnet or the sensor during maintenance

[0006] 4. The stroke of the support cannot be adjusted: the stroke of the support of the isolation lock is generated by the movement of the belt connection block, but if the movement stroke of the belt connection block cannot reach the minimum stroke of the lock pin assembly after assembly, then the institution will fail

[0007] 5. The isolation lock cannot adjust the assembly position of the door system during installation, resulting in limitations in use

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