Hydraulic door closer device

Abstract

The invention relates to a hydraulic door closer device. The hydraulic door closer device comprises a first control oil way and a second control oil way, wherein the first control oil way comprises a first sub-control oil way formed on a main machine shell and an electromagnetic valve oil way, the first sub-control oil way comprises a first oil inlet end, a first oil outlet end, a second radial hole channel and a lateral process hole, the first oil inlet end and the first oil outlet end are both communicated with a right hydraulic oil chamber, the electromagnetic valve oil way is formed in the right end cover assembly and comprises a pressure cavity, a first electromagnetic valve hole channel and a second electromagnetic valve hole channel, the first electromagnetic valve hole channel and the second electromagnetic valve hole channel communicate with the pressure cavity, the first electromagnetic valve hole channel communicates with the pressure cavity and the second radial hole channel, the second electromagnetic valve hole channel communicates with the pressure cavity and the lateral process hole, an electromagnetic valve body capable of connecting and disconnecting the pressure cavity and the second electromagnetic valve hole channel is arranged in the right end cover assembly, the second control oil way and the first control oil way are independently arranged, the second control oil way comprises a second oil inlet end and a second oil outlet end, and the second oil inlet end and the second oil outlet end both communicate with the right hydraulic oil cavity.

Description

technical field [0001] The invention belongs to the field of hydraulic door closers, in particular to a hydraulic door closer device. Background technique [0002] A hydraulic door closer is a device that can automatically close a manually opened door leaf. The one installed on the door or the door frame is usually called a door closer for short, and the one installed hidden on the ground is usually called a hydraulic floor spring, or floor spring for short. Using a door closer to close a door usually includes a door closer host and a linkage system (also called a rocker arm assembly), or a door closer host with a main arm and a guide rail assembly. The main body of the door closer is provided with a protruding gear shaft end, which is used for fixed connection with the connecting rod system or the square tenon of the main arm of the slide rail. When the door is opened, the door leaf drives the gear shaft to rotate. There is a rack piston meshing with the gear shaft in the ...

AI Technical Summary

Problems solved by technology

However, if it is required to realize the positioning and release of the door closer without triggering the electrical switch on the wall in the emergency state of power on, and realize the door closing action, or if the electrical system fails, the door leaf needs to be closed urgently, and the published patent cannot realize this function

The current positioning door closer host cannot be used as a non-positioning door closer after purchase or installation, or if the existing non-positioning door closer wants to position the door leaf, the door stopper can only be added at an appropriate position. Different seasons require door closers to have different functions. For example, on a sunny day, you want the door closer to have a positioning function to position the door leaf at a certain opening angle; when the wind is strong or the weather is bad, it can be switched. It can be used as a non-positioning door closer, which cannot be realized by the existing door closer structure

One disadvantage of the existing door closers in the positioning of the support arm assembly or the slide rail is the noise problem when entering the positioning and positioning disengagement. It is necessary to have low noise and ensure a certain positioning force. It is difficult to ensure both through on-site installation and debugging.

[0005] To sum up, the existing door closers still have limitations in positioning performance, positioning entry and disengagement noise problems, and universality of use.

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