2results about How to "Comfortable riding environment" patented technology

This utility model discloses a backrest lock, including a base plate. A locking hook and a locking plate are movably disposed on the base plate. The end of the locking plate has a pull head for connecting and cooperating with an external car pull rod, so that when the pull rod is pulled, the locking plate swings to release the restriction on the swing of the locking hook. The inner wall of the locking hook has a positioning strip for synchronously moving along the swing trajectory of the locking hook when it swings. The inner wall of the base plate has a positioning structure that works in conjunction with the positioning strip to guide the swing trajectory of the locking hook and limit the direction of the hook's swing, and an auxiliary structure that works in conjunction with the positioning structure to limit the wobbling or loosening of the locking hook when it is subjected to vibration and to improve the smoothness of the hook's swing. This utility model solves the problems of unstable hook swing trajectory and insufficient positioning accuracy in traditional backrest locks, easy loosening or wobbling of the locking hook under vibration, and insufficient smoothness of the hook's swing leading to operational jamming.

The utility model relates to the field of elevator ventilation equipment, in particular to a ventilation device for an elevator, which comprises a shell, a bottom plate horizontally mounted at the bottom of the shell, a dustproof plate horizontally mounted at the top of the shell, a smell dispersing box fixedly connected to the surface of the bottom end of the bottom plate, and a mounting frame vertically arranged on the side wall of a bottom plate body and located on one side of the smell dispersing box. A mounting frame is vertically arranged on the ventilation device, a limiting mechanism is vertically arranged on the mounting frame, a cavity is formed in the smell dispersing box, a placing opening communicated with the inner cavity is formed in the side wall of one side of the smell dispersing box, and smell dispersing openings are formed in the top and the bottom of a box body of the smell dispersing box. And the fragrance of the fragrance bag in the smell dispersing box is dispersed into the elevator through the smell dispersing opening, so that air is refreshed, a comfortable environment in the elevator is created, air with peculiar smell in an elevator shaft is prevented from entering the elevator to influence the environment in the elevator, and a comfortable elevator taking environment is effectively created.