Seat-contact switch
First Claim
1. A seat-contact switch for generating a "seat occupied" signal when a seat suspension approaches a seat frame as a result of seat loading, utilizing an actuating device which has a moveable means articulatable on the seat suspension and a base part fastenable to the seat frame and which, as a result of relative movement between the moveable part and its base part, brings switch contacts into and out of conductive contact and which is self-adjusting to compensate both for elastic and permanent deformations of the seat suspension in order to prevent continuous actuation of the seat-contact switch when the seat suspension undergoes permanent deformation, comprising:
- that said moveable means of said actuating device is connected to its base part to be coaxially displaceable;
said moveable means being prestressed by a spring means extending from the base part towards the seat suspension against a stop means on said base part;
said actuating device including an adjusting means whose unloaded natural length is adjusted by means of a mechanically driveable adjusting screw means comprising an adjusting nut and a threaded bolt, one of which is non-rotatably connected while the other is rotatably connected to a free-wheel and which exerts a blocking effect on the rotatable one of the nut or bolt to prohibit rotation in a return direction; and
wherein a difference in length between the distance from the seat suspension to the seat frame caused by deformation of the seat suspension and said unloaded natural length of the actuating device are compensated up to a maximum value by insertion of a deformation elastic member means on said adjusting nut and acting on said adjusting bolt; and
wherein after the maximum value is reached, the elastic member means is moved at least partially into a changed position along the threaded bolt, when the seat suspension is relieved of its seat loading.
1 Assignment
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Accused Products
Abstract
A seat-contact switch for generating a "seat occupied" signal is combined into a compact constructional unit with an axially resilient actuating device, which extends in a straight line between the seat suspension and the seat frame and which automatically compensates for elastic and permanent deformation or settling phenomena of the seat suspension resulting in a reduction of its unloaded length and which utilizes an adjusting screw connected between the seat and seat frame which screw causes adjustment of the point of make-break contact for the "seat occupied" signal.
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Citations
20 Claims
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1. A seat-contact switch for generating a "seat occupied" signal when a seat suspension approaches a seat frame as a result of seat loading, utilizing an actuating device which has a moveable means articulatable on the seat suspension and a base part fastenable to the seat frame and which, as a result of relative movement between the moveable part and its base part, brings switch contacts into and out of conductive contact and which is self-adjusting to compensate both for elastic and permanent deformations of the seat suspension in order to prevent continuous actuation of the seat-contact switch when the seat suspension undergoes permanent deformation, comprising:
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that said moveable means of said actuating device is connected to its base part to be coaxially displaceable; said moveable means being prestressed by a spring means extending from the base part towards the seat suspension against a stop means on said base part; said actuating device including an adjusting means whose unloaded natural length is adjusted by means of a mechanically driveable adjusting screw means comprising an adjusting nut and a threaded bolt, one of which is non-rotatably connected while the other is rotatably connected to a free-wheel and which exerts a blocking effect on the rotatable one of the nut or bolt to prohibit rotation in a return direction; and wherein a difference in length between the distance from the seat suspension to the seat frame caused by deformation of the seat suspension and said unloaded natural length of the actuating device are compensated up to a maximum value by insertion of a deformation elastic member means on said adjusting nut and acting on said adjusting bolt; and wherein after the maximum value is reached, the elastic member means is moved at least partially into a changed position along the threaded bolt, when the seat suspension is relieved of its seat loading. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification