Door closer with a drive

A technology of driving device and closing device, which is applied in the direction of switches with braking devices, wing parts, manufacturing tools, etc. It can solve the problems that the long-extended groove of the shell cannot be provided and it is difficult to install, so as to achieve good sealing , the effect of quick replacement
CN1902370AInactive Publication Date: 2007-01-24DORMA GMBH & CO KG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DORMA GMBH & CO KG
Publication Date
2007-01-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

A door closer includes a housing; a shaft supported in the housing and connectable to a door; a brake piston supported in the housing and charging the shaft, the brake piston and the housing defining a first space away from the shaft; a blocking member; a spring loading the blocking member and extending orthogonally from the housing; and a pump for pumping brake fluid to or from the first space. The pump is disposed in a second space formed between the housing and the spring. The shaft is lockable in a position by the blocking member.
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Description

technical field

[0001] The invention relates to a door closer with an electrohydraulic / electromechanical drive and a housing in which a shaft for connection to a door leaf or the like is supported, wherein the shaft is controlled by A spring-loaded locking element can be locked in at least one position. Background technique

[0002] Such door closers are well known. Such leaf closers usually have a housing in which a shaft connectable to a leaf or the like, a spring-loaded locking element and a brake piston are arranged. The locking element and the brake piston are essentially connected in series on opposite sides of the shaft in such a way that an elongated housing shape is formed overall. However, housing shapes of this type are in many cases difficult to install, since generally no elongated slots for the housing can be provided in the floor area. Such a door closer is known from DE 40 38 720 C2 as an upper door closer, and from DE 27 55 787 A1 as a floor spring. Con...

Claims

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