Novel door closer

Abstract

Disclosed is a new door closer which belongs to the mechanical field and is used for solving the defects of being unable to make the door maintain the opening state when the door is opened to a certain degree, complicated structure and bad concealment property found in the door closer in the prior art; the new door closer can enable the door to be closed automatically when the door is opened less than a certain angle and enables the door to be maintained in the opening state when the door is opened more than the angle; the new door closer is mounted on the inner side of the vertical door frame on the door shaft; a clamp groove composed of an upper part and a lower part is fixed on one side of a vertical flat plate; both ends of an elastic steel wire bent to be U-shaped are folded outwards to be arranged in the upper and lower parts of the clamp groove. The edge of the clamp groove contacted with the elastic steel wire is inclined; the elastic steel wire is enabled to have vertical compression deformation through the pressing force of the clamp groove inclined edge when the door is opened through the rotation in the horizontal direction; the deformation enables the elastic steel wire to generate the door closing force in the horizontal direction; the door closing force is reduced when the elastic steel wire rotates to the position through the reduction of the gradient of the back segment of the clamp groove inclined edge so that the door is maintained in the open state.

Description

technical field [0001] The invention is a novel door closer installed on a door and window structure. It can make the door close automatically, or it can keep the door open when it is opened to a certain extent. Background technique [0002] At present, the commonly used door closers are all installed on the top of the door, and the door and the door frame are connected by a force arm, which generates elastic force through the deformation of the spring, and then acts on the door through the force arm to automatically close the door. This door closer has the following shortcoming: the first, can only make the door close automatically, can not make the door when opening to a certain angle (referring to the included angle of door and door frame upper and lower sides), remain in the open position. Because sometimes, users want the door to remain open when the door is opened to a larger angle; second, the structure is complex, involving hydraulic pressure, piston, force arm, spr...

AI Technical Summary

Problems solved by technology

This door closer has the following disadvantages: first, it can only make the door close automatically, and cannot keep the door in the open position when it is opened to a certain angle (referring to the angle between the door and the upper and lower sides of the door frame).

Because sometimes, users want the door to remain open when the door is opened to a larger angle; second, the structure is complex, in

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