Pedaling force sensor and pedaling force detection device using the sensor
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsKiyoshi Saito, Shinjiro Ueda
Life of this patent
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Abstract
A force-on-pedal sensor of the present invention includes a cylindrical substrate (11) whose one end is closed having: a hole part (11d) at a center of its side section (11c); and a strain resistance element (13) via an insulating layer (12) at its side section (11c), a coil spring (15) coaxially inserted from an open end of the substrate (11), an inputting shaft having a stepped part (14a) contacted with one end of the coil spring (15) and inserted in the hole part (11d) in such a manner that a part of the inputting shaft (14) is protruded from the hole part (11d), and a stopper at a position where the inputting shaft (14) is protruded.
Claims11
A force-on-pedal sensor comprising:
- a cylindrical substrate whose one end is closed having:
- a hole at a center of a side section of the cylindrical substrate;
- and
- a strain resistance element via an insulating layer at the side section of the cylindrical substrate;
- a coil spring coaxially inserted from an open end of the substrate;
- an inputting shaft having a stepped part contacted with one end of the coil spring and inserted in the hole in such a manner that a part of the inputting shaft is protruded from the hole;
- and
- a stopper at a position where the inputting shaft is protruded,
- wherein a first stopper having an outer diameter larger than an inner diameter of a cylindrical section of the substrate is inserted into the stepped part of the inputting shaft, and contacts the coil spring,
- wherein when the coil spring is contracted to a certain load, the first stopper contacts the substrate, so that no more load is applied.
A pedal-pressure detecting device comprising:
- a brake arm;
- a link whose one end is linked with the brake arm using a rotatable first shaft and the other end is linked with a push-rod which transmits force to a master cylinder;
- and
- an arm, which is installed at the link, for transmitting a load by contacting the inputting shaft of a force-on-pedal sensor comprising:
- a cylindrical substrate whose one end is closed having:
- a hole at a center of a side section of the cylindrical substrate;
- and
- a strain resistance element via an insulating layer at the side section of the cylindrical substrate;
- a coil spring coaxially inserted from an open end of the substrate;
- an inputting shaft having a stepped part contacted with one end of the coil spring and inserted in the hole in such a manner that a part of the inputting shaft is protruded from the hole;
- and
- a stopper at a position where the inputting shaft is protruded.
Dependencies are inferred from the claim text.