Travel sensor for determining the position of a member such as a brake pedal
First Claim
1. A travel sensor for measuring mechanical quantities of motion for determining the position of the pedal of a brake system as said pedal is advanced through a travel range to operate said brake system, comprising a housing;
- an actuating element engagable by said brake pedal to be moved thereby as said brake pedal is advanced through said travel range;
a sensor element movably mounted in said housing;
distance measuring means mounted in said housing generating a signal corresponding to the position of said sensor element in said housing;
transmission means interconnecting said actuating element and said sensor element to cause advancing movement of said sensor element by movement of said actuating element as said pedal is advanced through said travel range, said transmission means accommodating a reduction in the extent of advancing travel of said sensor element relative the extent of travel of said actuating element, said reduction corresponding to the level of resistance to advancing movement presented by said sensor element; and
means adjacent said sensor element and acting thereon to exert a resistance force resisting advancing movement, said resistance force at a level corresponding to the extent of advancing movement of said sensor element caused by said transmission means, said means thereby acting in conjunction with said transmission means to produce a proportionately reduced movement of said sensor element relative to the extent of said advancing movement of said actuating element over at least a segment of the advancing movement of the sensor element;
whereby providing a proportional reduction of the advancing movement of said sensor element caused by advancing motion of said actuating element and brake pedal.
1 Assignment
0 Petitions
Accused Products
Abstract
A travel sensor for measuring mechanical quantities of motion, in particular for determining the brake pedal position, comprising a transmission unit axially slidable in a housing and comprising a measuring apparatus for generating an electric signal representative of the travel of the transmission unit. The transmission unit is formed of two mechanical transmissions elements (12, 13 and 3, 6, respectively) corresponding with each other and effecting a reduction of the introduced quantity of motions that the test signal is tapped by a reduced test travel. This provides a travel sensor of particularly short dimensions which permits to use of Hall-effect sensors.
-
Citations
3 Claims
-
1. A travel sensor for measuring mechanical quantities of motion for determining the position of the pedal of a brake system as said pedal is advanced through a travel range to operate said brake system, comprising a housing;
-
an actuating element engagable by said brake pedal to be moved thereby as said brake pedal is advanced through said travel range; a sensor element movably mounted in said housing; distance measuring means mounted in said housing generating a signal corresponding to the position of said sensor element in said housing; transmission means interconnecting said actuating element and said sensor element to cause advancing movement of said sensor element by movement of said actuating element as said pedal is advanced through said travel range, said transmission means accommodating a reduction in the extent of advancing travel of said sensor element relative the extent of travel of said actuating element, said reduction corresponding to the level of resistance to advancing movement presented by said sensor element; and means adjacent said sensor element and acting thereon to exert a resistance force resisting advancing movement, said resistance force at a level corresponding to the extent of advancing movement of said sensor element caused by said transmission means, said means thereby acting in conjunction with said transmission means to produce a proportionately reduced movement of said sensor element relative to the extent of said advancing movement of said actuating element over at least a segment of the advancing movement of the sensor element; whereby providing a proportional reduction of the advancing movement of said sensor element caused by advancing motion of said actuating element and brake pedal. - View Dependent Claims (2, 3)
-
Specification