Downward pressing rotation stopping type door opening and closing speed limiter

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 speed limiter for opening and closing a house door, in particular to a speed limiter for opening and closing a house door with a push-down and anti-rotation type. Background technique [0002] At present, with the development of the urbanization process, more and more high-rise residences are being built. Since the floors of high-rise residences are relatively high, convective winds are often encountered when opening windows for ventilation. Therefore, most of the current high-rise residences are in The door is equipped with an electromagnetic suction device to prevent the door from opening and closing at high speed due to convective wind when the door is opened. [0003] However, only the door of the electromagnetic suction device can only play the fixing effect on the door when the door is fully opened, and cannot realize the fixing effect on the door when the door is in a half-open state. Therefore, it is necessary to fix ...

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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