Seating load detecting device with bracket mounted sensor
First Claim
1. A seating load detecting device comprising:
- a seating load supporting member adapted to support a seat cushion and a seat back;
a positioning member comprised of a guide rail adapted to be fixed to a floor and an upper rail slidably mounted on the guide rail;
a bracket connecting the seating load supporting member to the upper rail of the positioning member to elastically transmit a load applied to said seating load supporting member to said positioning member;
a curved portion provided on said bracket, having opposing portions between said positioning member and said seating load supporting member;
a coupling portion which extends vertically from said respective opposing portions and which is coupled to said seating load supporting member and said positioning member; and
a load sensor attached on a surface of said opposing portions.
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Accused Products
Abstract
A seating load detecting device in which a lower arm for supporting a seat cushion and a seat back is coupled with an upper rail by a front bracket and a rear bracket. A distortion gage is attached to the bracket. The bracket comprises a curved portion of a U-shape or V-shape. The lower arm and the upper rail are coupled to each other with the direction orthogonal to two opposing legs of the curved portion being vertical. The distortion gage has a total of four distortion detecting elements G11 to G22 distributed in a matrix distribution, two attached in the front and back directional plane of the legs and two attached in the width directional plane of the legs. Due to the Wheatstone bridge connection line of these elements, high gain of a seating load detection voltage e with respect to the amount in change of the vertical load Fv can be obtained.
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Citations
21 Claims
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1. A seating load detecting device comprising:
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a seating load supporting member adapted to support a seat cushion and a seat back;
a positioning member comprised of a guide rail adapted to be fixed to a floor and an upper rail slidably mounted on the guide rail;
a bracket connecting the seating load supporting member to the upper rail of the positioning member to elastically transmit a load applied to said seating load supporting member to said positioning member;
a curved portion provided on said bracket, having opposing portions between said positioning member and said seating load supporting member;
a coupling portion which extends vertically from said respective opposing portions and which is coupled to said seating load supporting member and said positioning member; and
a load sensor attached on a surface of said opposing portions. - View Dependent Claims (2, 3, 4, 8, 9, 10, 11, 12, 13, 14)
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5. A seating load detecting device comprising:
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a seating load supporting member adapted to support a seat cushion and a seat back;
a positioning member comprised of a guide rail adapted to be fixed to a floor and an upper rail slidably mounted on the guide rail;
a bracket connecting the seating load supporting member to the upper rail of the positioning member to elastically transmit a load applied to said seating load supporting member to said positioning member, said bracket including vertically spaced opposing portions;
a load sensor provided on at least one of said opposing portions; and
a limiting member, which is provided between said bracket or said seating load supporting member and said positioning member, for limiting a moving amount in the vertical direction of said seating load supporting member, when a load acts on said seating load supporting member. - View Dependent Claims (6, 7, 15)
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16. A seating load detecting device comprising:
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a seating load supporting member adapted to support a seat cushion and a seat back;
a positioning member comprised of a guide rail adapted to be fixed to a floor and an upper rail slidably mounted on the guide rail;
a bracket connecting the seating load supporting member to the upper rail of the positioning member to elastically transmit a load applied to said seating load supporting member to said positioning member;
a U-shaped or V-shaped portion provided on said bracket and having opposing portions between said positioning member and said seating load supporting member;
a coupling portion which extends vertically from said respective opposing portions and which is coupled to said seating load supporting member and said positioning member; and
a load sensor attached on a surface of said opposing portions. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification