Hydraulic door closer
A door closer and hydraulic technology, used in door/window accessories, switches with brakes, buildings, etc., can solve the problems of loud closing sound, hard closing without effort, incompatibility, etc. Lightness, improved rotational stability, and improved operability
Active Publication Date: 2019-06-25
温州欧德门控科技发展有限公司
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Problems solved by technology
[0004] However, the following problems exist through the cooperation of the gear and the rack. During the transmission process of the gear and the rack, the sound of closing the door will be louder, and the closing of the door will be stiff and labor-saving, which will cause certain incompatibility in the use process.
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Embodiment Construction
[0041] The hydraulic door closer will be further described with reference to the accompanying drawings.
[0042] A hydraulic door closer, such as figure 1 and figure 2 As shown, it includes a housing 1, a piston 2, a front end cover 3, a rear end cover 4, a first rotating wheel 6, a second rotating wheel 7 and a camshaft 5 for connecting the arm assembly; the front end cover 3 and the rear end cover 4 They are respectively arranged on both sides of the housing 1, and a cavity 11 for storing hydraulic oil is formed between the housing 1; combined with image 3 As shown, the piston 2 is arranged in the cavity 11 and is in sliding and sealing connection with the inner wall of the housing 1, so that a first cavity 12 is formed between the piston 2 and the front end cover 3, and a first cavity 12 is formed between the piston 2 and the rear end cover 4. the second cavity 13 .
[0043] Such as figure 2 As shown, wherein, a mounting cavity 21 is provided in the piston 2, and the f...
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The invention discloses a hydraulic door closer, relating to the technical field of door closers. The hydraulic door closer comprises a shell, a piston, a front end cover, a rear end cover, a cam, a first check valve, a second check valve, a first rotating wheel and a second rotating wheel, wherein the shell is provided with a cavity filled with hydraulic oil, a piston is arranged in the cavity and is slidingly and hermetically connected with the inner wall of the shell, a first cavity is formed between the piston and the front end cover, a second cavity is formed between the piston and the rear end cover, the cam is arranged between the first rotating wheel and the second rotating wheel, and abuts against the circumferential surfaces of the first rotating wheel and the second rotating wheel, and an arc-shaped groove is formed in the cam; when a door is closed, the first rotating wheel is placed in the arc-shaped groove, and the second rotating wheel abuts against a lug boss of the cam; when the door is opened to a maximum angle, the first rotating wheel abuts against a side edge of the lug boss of the cam, and the second rotating wheel abuts against one side edge of the arc-shapedgroove. The hydraulic door closer has the effects of making a light sound when the door is opened or closed, and improving the operability in use.
Description
technical field [0001] The invention relates to the technical field of door closers, more specifically, it relates to a hydraulic door closer. Background technique [0002] As a necessary facility for modern buildings, door closers have been widely used in various fields of society. With the continuous development and progress of society, the country has higher and higher requirements for fire protection and security. Many access doors and fire doors need to be equipped with door closers; the door closer is a hydraulic device similar to a spring on the door head. After opening, it can be compressed and released to automatically close the door. It has the effect of a spring door, which can ensure that the door is accurately and timely closed to the initial position after being opened. [0003] The internal structure of the door closer is a secret world that operates at any time and stably; the arm assembly is installed together with the door closer, and the arm assembly is c...
Claims
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IPC IPC(8): E05F15/50E05F3/04E05F3/12
Inventor 陈招胜陆际泽
Owner 温州欧德门控科技发展有限公司