Door closer with balanced door closing effect

Abstract

The invention discloses a novel door closer with balanced door closing effect, which comprises an elastic mechanism which comprises a cylinder-shaped shell, a piston component, a long spring and a pull rod, wherein the piston component is arranged inside the cylinder-shaped shell and is fastened and connected with one end of the pull rod; the long spring is positioned in the cylinder-shaped shell and sheathed outside the pull rod in a penetrating way; the other end of the pull rod penetrates through and extends outside the cylinder-shaped shell; the novel door closer further comprises a balance speed control mechanism which is fastened and connected with the cylinder-shaped shell of the elastic mechanism by a cylinder-shaped outer sleeve; the balance speed control mechanism comprises a rotary sliding part which is rotatablely contacted and matched with the pull rod, and a speed regulation part used for controlling the rotating speed of the rotary sliding part; and the contact section between the pull rod and the rotary sliding part is provided with a spiral groove which is rotatablely contacted and matched with the rotary sliding part. The novel door closer with the balanced door closing effect has the beneficial effects that: 1. the balance speed control mechanism is added, so that the aim of closing a door in a balance speed control way can be achieved in the whole closing process of a door leaf, the novel door closer is more convenient to use, and the safety is improved; and 2. the novel door closer is simple and compact in whole structure, convenient and easy to operate, safe, practical, reliable and suitable for being popularized on different occasions.

Description

technical field [0001] The invention relates to a door closer, which belongs to the technical field of door closers, in particular to a novel door closer with a balanced door closing effect. Background technique [0002] At present, such as safety doors, security doors, room doors, bathroom doors, kitchen doors, screen doors, cabinet doors or windows, etc., door closers are generally used to realize automatic closing functions, thereby achieving effective fire prevention and anti-theft effects. In the prior art, the types of door closers can generally be divided into mechanical, pneumatic and hydraulic types. Among them, mechanical door closers generally use springs to form elastic components. When the operator pushes the door leaf, the driving spring is stretched , compression or torsion and other deformations to store energy, when the operator leaves the door leaf, the spring changes from stored energy to released energy, and the pull rod closes the door under the drive of...

AI Technical Summary

Problems solved by technology

However, there is a problem in the use of this type of mechanical door closer in the prior art, that is, when the door leaf is opened at a large angle, because the spring produces a large amount of compression, a large amount of energy will be released at the moment of letting go. The door leaf tends to close quickly, and then the closing speed of the door leaf gradually slows down as the spring compression decreases, and the effect of balanced speed control cannot be achieved during the entire closing process

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