Passenger's weight measurement device for vehicle seat and attachment structure for load sensor

A passenger's weight measurement device on a vehicle seat, comprising:

• an upper rail disposed to be movable back and forth on a lower rail fixed to a vehicle floor;
• a load sensor fixed on the upper rail;
• and
• a frame disposed on the load sensor and below a vehicle seat,
• wherein a rod extends from the load sensor to penetrate the frame and to be inserted into an insertion hole formed in a center of a leaf spring, the leaf spring is curved into an angle shape to separate the center of the leaf spring from the frame, a nut is engaged with the rod on the leaf spring, and both hems of the leaf spring abut on the frame in a state that the leaf spring is fastened by the nut.

A passenger's weight measurement device on a vehicle seat, comprising:

• a pair of left and right upper rails disposed to be movable back and forth on a pair of left and right lower rails fixed to a vehicle floor;
• four load sensors fixed on front and rear sides of the pair of upper rails;
• and
• a frame disposed on the four load sensors and below the vehicle seat,
• wherein two of the four load sensors, which are arranged on one diagonal line, are set to play in back-and-forth and left-and-right directions with respect to the frame, and the other two load sensors arranged on the other diagonal line are fixed in back-and-forth and left-and-right directions with respect to the frame.

A passenger's weight measurement device on a vehicle seat, comprising:

• a pair of slide rails arranged in a vehicle floor;
• a pair of side frames for supporting the seat and disposed above the pair of slide rails;
• and
• load cells disposed at four corners of the pair of slide rails and disposed between the pair of slide rails and the pair of side frames,
• wherein the pair of side frames constitute a rectangular seat frame with a set of first connection frames for connecting both ends of the pair of side frames extending in parallel so as to be perpendicular to the pair of side frames, and
• wherein a pair of load cells located on one diagonal line among the four load cells are connected to be movable up and down with respect to the seat frame, and a pair of load cells located on the other diagonal line are connected to be movable up and down and play with respect to the seat frame.