Sliding plug door assembly

Abstract

The invention relates to the field of sliding plug doors, and discloses a sliding plug door assembly. The sliding plug door assembly is characterized in that two groups of connecting shaft driving mechanisms are separately arranged at two ends of a base fixed at the upper part of a door frame, are fixedly connected through a sliding rod and are rotationally connected through a pull rod, two sliding sleeves are arranged on the sliding rod in a sleeving mode, and two ends of a drawn wire are connected with the two sliding sleeves after being wound around two wire drawing wheels correspondingly;a guide wheel rotationally connected to one sliding sleeve is limited in a guide groove in the base; a power source of a sliding plug door is fixed on the pull rod, and a driving end of the sliding plug door is fixedly connected with the sliding sleeve connected with the guide wheel; and door plates are fixedly connected to the two sliding sleeves through door carrying frames correspondingly, andthe connecting shaft driving mechanisms are driven by a power source to do reciprocating motion relative to the base. According to the sliding plug door assembly, the force originally concentrated onthe guide wheel is dispersed into the guide wheel and the connecting shaft driving mechanisms on the two sides of the guide wheel, so that the sliding plug door is very stable when opened or closed, the phenomenon that the guide wheel is automatically separated from the guide groove is avoided, and damage to the guide wheel is reduced.

Description

technical field [0001] The invention relates to the field of drive mechanisms, in particular to a sliding door assembly. Background technique [0002] At present, bus doors, subway doors or high-speed rail doors usually use sliding doors. The sliding door has good sealing performance and takes up less space, making the overall model beautiful and generous. The quality of the sliding door lock directly affects the quality of the sliding door. Security and sealing, in order to improve the security of sliding door, the researcher in the field mainly puts the object of research on the structure of sliding door lock. [0003] The currently used plug door lock structure is usually when the door is closed, a guide wheel on the door lock is introduced into the guide groove through a guide groove on the vehicle frame, and the movement of the door lock is restricted by this guide groove, and the door The lock is fixed on the car door, so that the movement of the car door is restricte...

AI Technical Summary

Problems solved by technology

On the one hand, this kind of door lock structure has great potential safety hazards, because when the vehicle is driving, the road surface is bumpy and hollow, and the guide wheel on the door lock will roll back and forth in the guide groove, which will cause the door to be closed. Poor, when running at high speed, the airflow will enter the car from the door gap, affecting the passenger experience; when the vibration is large, the guide wheel may even slide out from the original path in the guide groove, which will cause the door to be broken. Automatic opening, there is a great security risk

On the other hand, in this door lock structure, the power source is fixed on the door frame, and the driving end of the power source is fixed on the guide wheel. When the door is closed or opened, the power applied by the power source is all applied to the guide wheel, and the guide wheel The wheel is the only point of force, and it is easy to cause the guide wheel to be damaged and accelerated due to stress concentration, and because there is only this point of force, when closing or opening the door, the door panels on both sides cannot be guaranteed to be absolutely synchronized, which will cause the two sides to close Or the absolute balance cannot be guaranteed when opening, which may easily cause the door panel to shake

[0004] In order to solve the above-mentioned potential safety hazards, the general solution is to add a cylinder or motor to pull the guide wheel after the door is closed, so that the guide wheel is limited in the guide groove, but this method needs to be used after the door is closed. The larger pulling force limits the position of the guide wheel; and the above-mentioned problem of instability when closing or opening the door has not been solved well, which does not conform to the concept of green environmental protection in today's society

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