Land vehicles – Skates – Shoe attaching means
Patent
1993-04-23
1994-08-16
Johnson, Brian L.
Land vehicles
Skates
Shoe attaching means
280629, A63C 908
Patent
active
053380525
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a safety ski binding release and reset mechanism comprising a releasable jaw in which at least one holding member engaging a ski boot to be held is supported in its holding position by a two-part holding part, on one part of which engages a spring determining the holding force and supported on one housing part, and a second part of which engages the holding part or holding parts, with these two parts being releasably connectable to one another through a coupling mechanism or rather being connectably locked against movement at least in a direction of the force action of the spring, which coupling mechanism is controlled by a feversably rotatable electric motor controlled by an evaluating circuit processing signals of at least one force-receiving means.
BACKGROUND OF THE INVENTION
Such a binding has, for example, become known from AT-PS 375 833. The coupling mechanism in this known solution has overlapping sections of the two parts of the holding part arranged coaxially to one another and coupling members, preferably balls, are arranged in the overlapping section and are held on the overlapped section by an inclined extending shoulder and openings, the size of which corresponds at least with the size of the coupling members. This overlapping section is surrounded by a sleeve which has on its inner wall at least one free area to receive the coupling members which, in the released position of the coupling mechanism, coincide with the openings of the overlapping section and can receive the coupling members. The sleeve itself is axially movable by an electric motor which is loaded by a circuit detecting the forces acting onto the binding.
In these bindings which operate essentially according to the so-called spring pliers principle, the force needed to move the sleeve can be relatively large when the binding is iced up and the force must be applied by the electric motor. Thus, it is necessary to design same suitably strong since the release, when needed, must occur very quickly.
SUMMARY OF THE INVENTION
The goal of the invention is to avoid these disadvantages and to provide a binding of the above-mentioned type in which a small electric motor requiring only little energy will be sufficient and yet assuming a high degree of safety in the release when the binding is iced. This is achieved with the invention in such a manner that the coupling mechanism is initially tensioned by a coupling spring to prevent movement toward its disengaged position, the disengaged position of the connection of the two parts of the holding part initially locked against movement, corresponding to the point whereat they are released.
With this measure it is possible to design the coupling spring relatively strong and to tension same after a release by the electric motor in order to engage the coupling mechanism. This can, however, be done relatively slowly, for example, within 10 to 20 seconds, so that a very small and weak electric motor, which can be stepped down accordingly, will be sufficient.
In a ski binding of the invention in which the coupling has overlapping sections of the two parts of the holding part, which two parts are arranged coaxially to one another in an area adjacent coupling members, preferably balls, which are arranged in the overlapping section and are held on the overlapped section by an inclined extending shoulder and openings the size of which corresponds at least with the size of the coupling member. The overlapping section is surrounded by a sleeve which has at least one free area on its inner wall to receive the coupling members which, in the released position of the coupling mechanism, cover the openings of the overlapping section and receive the coupling members. According to a further characteristic of the invention, a coupling spring is provided which engages the sleeve in a peripheral direction and further engages a pivotally held pawl part which cooperates with the sleeve, with the shaft of the electric motor being able to drivingly connect, if nec
REFERENCES:
patent: 3367672 (1968-02-01), Tonozzi et al.
patent: 3820803 (1974-06-01), Frisch et al.
patent: 4130296 (1978-12-01), D'Antonio et al.
patent: 4460195 (1984-07-01), Bildner
patent: 4589672 (1986-05-01), Dimier et al.
Freisinger Henry
Wittmann Heinz
HTM Sport - und Freizeitgeraete Aktiengesellschaft
Johnson Brian L.
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