Peep hole capable of ascending and descending

Abstract

The invention provides a peep hole capable of ascending and descending. The peep hole comprises a fixed hollow pipe and a movable hollow pipe, wherein the fixed hollow pipe forms a telescopic device; the movable hollow pipe is glidingly arranged in the fixed hollow pipe in a sleeving way; a first plane mirror and a second plane mirror, of which the mirror surfaces are opposite and parallel, are correspondingly arranged at the inside of the lower end of the movable hollow pipe and the inside of the upper end of the fixed hollow pipe; light transmission through holes are formed in the upper end of the fixed hollow pipe; the light transmission through holes are perpendicular to the center axial line of the fixed hollow pipe and transversely penetrate through the pipe body of the fixed hollow pipe; light transmission holes are formed in the lower end of the movable hollow pipe; visible light rays reflected by the first plane mirror can be seen through the light transmission holes; the first plane mirror is movably arranged inside the upper end of the fixed hollow pipe; a first plane mirror installing positioning table is arranged on the side wall of the inside of the upper end of the fixed hollow pipe; the back part of the first plane mirror is fixedly connected with a push-pull rod in transmission connection. The peep hole observation height position can be regulated; children with low body height can conveniently see outdoor conditions; meanwhile, the observation by adults with high body height cannot be impeded.

Description

technical field [0001] The invention relates to the technical field of peepholes for anti-theft doors, in particular to a liftable peephole. Background technique [0002] The cat's eye is a common name for the door of the anti-theft door. When someone knocks on the door from the outside, it is an optical device used to identify the people outside the house and the safety situation outside the house. However, it is impossible to see anything indoors from the peephole of the outdoor door. In the existing technology, the cat's eye is generally installed in the middle of the upper part of the door, and its height cannot be adjusted. Only people with higher heights can see the situation outside the house. Unable to see outside the house. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a liftable cat's eye for the deficiencies of the prior art, which is suitable for different groups of people and can simultaneously ob...

AI Technical Summary

Problems solved by technology

In the existing technology, the cat's eye is generally installed in the middle of the upper part of the door, and its height cannot be adjusted. Only people with higher heights can see the situation outside the house. unable to see outside

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