Closure fasteners – Operators with knobs or handles
Reexamination Certificate
1999-07-30
2001-07-24
Estremsky, Gary W. (Department: 3627)
Closure fasteners
Operators with knobs or handles
C070S278100
Reexamination Certificate
active
06264256
ABSTRACT:
BRIEF SUMMARY OF THE INVENTION
The invention relates to a closing system for doors with an inner rotary knob associated with the inner side of a door and connected to a closing element for the actuation of a latch and an outer rotary knob.
In such closing systems the door can be locked or unlocked from the inner side of the door without a key or any other form of access entitlement by means of the inner rotary knob.
OBJECT OF THE INVENTION
It is an object of the invention to provide a closing system of the initially named kind which makes it possible, with an economic layout, to selectively enable or to prevent the actuation of the latch via the outer rotary knob in a manner which is as simple as possible.
This object is satisfied, in accordance with the invention, by a closing system for doors having an inner rotary knob associated with an inner side of the door and rotationally fixedly connected to a closing element for the actuation of a latch and an outer rotary knob, wherein the inner rotary knob is rotationally fixedly connected to a sleeve on which the closing element is rotationally fixedly arranged, wherein the outer rotary knob is rotationally fixedly connected to a shaft which extends through the sleeve of the inner rotary knob and is rotationally fixedly connected to a coupling unit arranged in the inner rotary knob, which is freely rotatable relative to the inner rotary knob in a free wheel state and rotationally fixedly coupled to the inner rotary knob in a driving state, and wherein the coupling unit is connected, for the changeover between the free wheel state and the driving state, to a code input unit arranged in the outer rotary knob via an electrical and/or optical signal path extending through the shaft of the outer rotary knob.
The passage of the shaft of the outer rotary knob through the sleeve of the inner rotary knob in accordance with the invention and the rotationally fixed connection of the shaft to the coupling unit provided in the inner rotary knob provides a simple and space saving possibility of producing a rotationally fixed connection between the outer rotary knob and the inner rotary knob.
The coupling unit, which is rotationally fixedly connected in accordance with the invention to the shaft of the outer rotary knob, exploits the space which is available within the inner rotary knob in advantageous manner, whereby space is provided for the code input unit in the outer rotary knob.
The exploitation of the shaft in accordance with the invention for the signal path is in particular of advantage when coupling lines, for example cables or light guides, and used, since, on actuation of the rotary knobs, the rotationally fixed coupling between the shaft and the coupling unit prevents the lines being rotated relative to the components in the rotary knobs to which the lines are connected, in particular relative to the coupling unit and the code input unit, and thus prevents them breaking.
Furthermore, in accordance with the invention, the coupling unit and the code input of the closing system are integrated into the rotary knobs so that existing doors can be converted to use the closing system of the invention with comparatively little effort and cost and without changing the optical appearance of the door.
In accordance with a preferred embodiment of the invention the coupling unit is formed as a component of a transponder unit, and the code input unit is formed as a receiver unit of the transponder unit.
In this way a closing system is provided which can be actuated without a customary key and which permits a user with authorized access to rotationally fixedly connect the outer rotary knob to the inner rotary knob simply by transmitting a signal to the receiver unit via a portable transmitter, for example in the form of a cheque chard, and in this way to obtain access.
In accordance with a further preferred embodiment of the invention the sleeve of the inner rotary knob and the shaft of the out rotary knob are axially displaceable relative to one another. In this way a simple and in particular stepless adaptation of the closing system to different door leaf thicknesses is made possible.
In accordance with a further preferred embodiment of the invention the closing element is axially displaceable on the sleeve of the inner rotary knob.
In this manner the closing system can be simply adapted to the axial position of the latch in the door leaf by displacement of the closing element on the sleeve.
In accordance with a further preferred embodiment of the invention the closing element is connected to a cylinder adapter which is rotatable relative to the closing element.
In this way the closing system of the invention can be inserted in place of a customary lock cylinder into the door lock so that the door can be converted to the closing system of the invention in a simple manner.
In accordance with a further preferred embodiment of the invention a cylinder adapter and the closing element are pushed onto a common bearing sleeve, preferably manufactured of plastic, which is axially displaceable on the sleeve of the inner rotary knob.
The cylinder adapter and the closing element are in this arrangement combined by means of the bearing sleeve into a unit in a particularly simple manner.
In accordance with a further preferred embodiment of the invention the closing element, preferably a common bearing sleeve of a cylinder adapter and of a closing element, is capable of being selectively pushed onto the sleeve of the inner rotary knob with its one or other axial end at the front.
As a consequence, with an asymmetrical construction of the closing element, an adaptation to the axial position of the latch in the door leaf can be obtained simply by turning the closing element, i.e. the unit consisting of the cylinder adapter and the closing element, on the sleeve of the inner rotary knob. In particular, this makes it possible to arrange the closing element optionally in the direct vicinity of the inner or outer side of the door.
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Hankel Willi
Uhlmann Günter
Estremsky Gary W.
Hewi Heinrich Wilke GmbH
Townsend and Townsend / and Crew LLP
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