A speed limiter for opening and closing the door with downward pressure and anti-rotation

Abstract

The invention discloses a downward pressing rotation stopping type door opening and closing speed limiter which is composed of a support, a rolling wheel, a pendulum bob, elastic rubber and an installation connecting frame. The main body of the rolling wheel is a cylinder, a shaft is arranged in the center of the left side of the cylinder, a long shaft is arranged in the center of the right side of the cylinder, a pendulum bob connecting frame is arranged at the top end of the long shaft and comprises two rectangular plates, the rectangular plates are perpendicular to the central axis of the long shaft, and pendulum bob connecting holes are formed in the rectangular plates. After the limiter is installed on a door, the rolling wheel is attached to the ground, during door opening and closing, the rolling wheel can be driven to rotate under the friction action with the ground; when the opening and closing speed of the door exceeds a set speed, the pendulum bob swings outwards under the action of centrifugal force to hang a baffle in an annular baffle of the support, the rolling wheel stops rotating, and after the rolling wheel stops rotating, the support rotates around the rotating shaft under the action of friction force, so that the support generates downward pressure, the friction force is increased, and deceleration of the door is achieved. The problem that an existing room door is not limited when the room door is in a semi-opening and semi-closing state is solved.

Description

Technical field [0001] The invention relates to a door opening and closing speed limiter, in particular to a downward pressure non-rotation type door opening and closing speed limiter. Background technique [0002] At present, with the development of urbanization, more and more high-rise residential buildings are being built. Because high-rise residential buildings are located on higher floors, they often encounter high-rise convective wind when opening windows for ventilation, so most of the current high-rise residential buildings are The door is equipped with an electromagnetic attractor to prevent high-speed opening and closing of the door due to convective wind when the door is opened. [0003] However, the door with only the electromagnetic attractor can only play the role of fixing the door when the door is fully opened, and cannot realize the fixing function of the door when the door is half-opened and closed. Therefore, it is necessary to fix the existing door The equipmen...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a push-down and anti-rotation door opening and closing speed limiter, which is used to solve the problem that the existing door is not restricted when the door is in the half-opening state.

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