Pedal-operated device
First Claim
1. A pedal-operated operation device comprising:
- an operating element to be foot-operated to provide an operating force on the operating element;
support means for supporting the operating element such that the operating element can undergo relative displacement relative to the support means; and
a first friction surface pair and a second friction surface pair, each of which includes paired friction surfaces for generating a resistance force against the relative displacement of the operating element by a friction force generated between the paired friction surfaces and which differ from each other in coefficient of static friction,whereinthe first or second friction surface pair higher in coefficient of static friction includes a displacement member which allows the first or second friction surface pair higher in coefficient of static friction to move together with the operating element in association with the relative displacement thereof in response to the operating force being greater than a maximum static friction force of the first or second friction surface pair lower in coefficient of static friction and being equal to or less than a maximum static friction force of the first or second friction surface pair higher in coefficient of static friction.
1 Assignment
0 Petitions
Accused Products
Abstract
An object of the present invention is to improve the easiness of steadily maintaining the magnitude of treading on a foot-operated operating element while mitigating a feeling of treading on a wall at the time of start of treading on the operating element. A pedal-operated operation device includes a pedal arm, a support housing, a spring for urging the pedal arm in a direction of return, a first shim and a second shim. A frictional engagement portion of the second shim is higher in maximum static friction force than a frictional engagement portion of the first shim. The second shim has a region in which the elastic modulus of the second elastic deformation portion is lower than that of the first shim, in terms of elastic deformation at the time when the pedal arm moves relative to the support housing.
15 Citations
6 Claims
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1. A pedal-operated operation device comprising:
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an operating element to be foot-operated to provide an operating force on the operating element; support means for supporting the operating element such that the operating element can undergo relative displacement relative to the support means; and a first friction surface pair and a second friction surface pair, each of which includes paired friction surfaces for generating a resistance force against the relative displacement of the operating element by a friction force generated between the paired friction surfaces and which differ from each other in coefficient of static friction, wherein the first or second friction surface pair higher in coefficient of static friction includes a displacement member which allows the first or second friction surface pair higher in coefficient of static friction to move together with the operating element in association with the relative displacement thereof in response to the operating force being greater than a maximum static friction force of the first or second friction surface pair lower in coefficient of static friction and being equal to or less than a maximum static friction force of the first or second friction surface pair higher in coefficient of static friction. - View Dependent Claims (2)
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3. A pedal-operated operation device comprising:
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an operating element to be foot-operated to provide an operating force on the operating element; support means for supporting the operating element such that the operating element can undergo relative displacement relative to the support means; and a first friction surface pair and a second friction surface pair, each of which includes paired friction surfaces for generating a resistance force against the relative displacement of the operating element by a friction force generated between the paired friction surfaces and which differ from each other in coefficient of static friction, wherein the first or second friction surface pair higher in coefficient of static friction includes an elastic body which allows the first or second friction surface pair higher in coefficient of static friction to move together with the operating element in association with the relative displacement thereof in response to the operating force being greater than a maximum static friction force of the first or second friction surface pair lower in coefficient of static friction and being equal to or less than a maximum static friction force of the first or second friction surface pair higher in coefficient of static friction. - View Dependent Claims (4)
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5. A vehicular operation device comprising:
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an operating element to be foot-operated to provide an operating force on the operating element; support means for supporting the operating element such that the operating element can undergo relative displacement relative to the support means; and a first friction surface pair and a second friction surface pair, each of which includes paired friction surfaces for generating a resistance force against the relative displacement of the operating element by a friction force generated between the paired friction surfaces and which differ from each other in coefficient of static friction, wherein the first or second friction surface pair higher in coefficient of static friction includes a displacement member which allows the first or second friction surface pair higher in coefficient of static friction to move together with the operating element in association with the relative displacement thereof in response to the operating force being greater than a maximum static friction force of the first or second friction surface pair lower in coefficient of static friction and being equal to or less than a maximum static friction force of the first or second friction surface pair higher in coefficient of static friction, a ratio of relative displacement of the operating element to the operating force to the operating element varies to at least three values, and, in a process of increase in the operating force subsequent to start of increasing, the ratio is set to a high value at a time when the operating force is of large magnitude as compared with a time when the operating force is of small magnitude.
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6. A vehicular operation device comprising:
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an operating element to be foot-operated to provide an operating force on the operating element; support means for supporting the operating element such that the operating element can undergo relative displacement relative to the support means; and a first friction surface pair and a second friction surface pair, each of which includes paired friction surfaces for generating a resistance force against the relative displacement of the operating element by a friction force generated between the paired friction surfaces and which differ from each other in coefficient of static friction, wherein the first or second friction surface pair higher in coefficient of static friction includes a displacement member which allows the first or second friction surface pair higher in coefficient of static friction to move together with the operating element in association with the relative displacement thereof in response to the operating force being greater than a maximum static friction force of the first or second friction surface pair lower in coefficient of static friction and being equal to or less than a maximum static friction force of the first or second friction surface pair higher in coefficient of static friction, a ratio of relative displacement of the operating element to the operating force to the operating element varies to at least three values, and, in a process of decrease in the operating force subsequent to start of decreasing, the ratio is set to a low value at a time when the operating force is of large magnitude as compared with a time when the operating force is of small magnitude.
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Specification