JPS6425434U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a front view showing the overall configuration of the first embodiment of the present invention, FIG. 2 is a left side view of FIG. 1, and FIG. 3 is a graph showing the throttle valve opening characteristics of the same embodiment. FIG. 4 is a left side view showing the second embodiment of the present invention, and FIG. 5 is a front view showing the overall configuration of the third embodiment of the present invention. 2... Rotating shaft, 3... Valve opening lever, 4... Valve closing lever, 5... Plate, 6... Cam, 8... Accelerator drum, 9, 10... Link, 11... Support shaft,
13...Electric motor, 14...Shaft, 15...Spring assembly tool, 16...Return spring, 17...Link.

Claims (1)

[Scope of Claim for Utility Model Registration] A valve opening lever and a valve closing lever fixed to the rotating shaft of a throttle valve installed in the intake system of an internal combustion engine, and a lever that slides and rotates on the rotating shaft of the throttle valve. an accelerator drum that is freely supported and rotationally driven in conjunction with the accelerator pedal; a cam that is pivotally supported on a fixed member so as to be freely engaged with the lever; and a cam that is connected between the accelerator drum and the cam, and that a first link mechanism that forcibly drives the throttle valve to a minimum opening according to the amount of accelerator operation through engagement between the valve opening lever and the cam; and a first link mechanism that is provided on the accelerator drum and that is connected to the valve closing lever. a stopper member that restricts the movement of the throttle valve in the opening direction by engagement and provides a maximum opening characteristic according to the amount of accelerator operation; a valve driving means for driving the throttle valve to a target opening within the range of the opening and the maximum opening regulated by the valve closing lever and the stopper member; a return spring whose one end is locked to a spring assembly that is freely rotatably attached to a shaft disposed on the shaft and whose other end is locked to a fixed member; and between the spring assembly and the accelerator drum. When the stopper member and the valve closing lever are engaged, the biasing force of the return spring is transmitted to the throttle valve to apply a return torque in the closing direction that is stronger than the driving torque of the valve driving means in the throttle valve opening direction. A throttle valve opening degree control device comprising: a second link mechanism that provides a second link mechanism;