JPH0246063U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the inlet switching device according to this invention, Figs. 2 a to c are explanatory views showing the operation at the time of switching, and Fig. 3 is an explanation showing the disadvantages of the absence of the second spring. 4 are explanatory diagrams showing an intake switching structure of a bongo type one-box car, and FIG. 5 is a sectional view showing a conventional intake port switching device. 20...Lower housing, 22...Upper housing, 24a...Upper side valve seat part, 26...First intake pipe, 26a...Lower side valve seat part, 28...Intake pipe body, 30...No. Second intake pipe, 32... Operating rod, 38... Arm, 42... Shutter, 4
6... Closing coil spring, 50... Small coil spring (second spring).

Claims (1)

[Scope of utility model registration request] A first intake pipe provided outdoors, a second intake pipe communicating with the interior of the vehicle, a housing joining the first and second intake pipes in a perpendicular state and communicating with the intake pipe main body; an arm rotatably disposed within the housing; and an intake switching shutter that is pivotally connected to the tip of the arm and faces both valve seats of the intake pipes that open into the housing; An operating rod for switching the shutter, which has one end connected to the arm and the other end protrudes toward the interior of the vehicle, and a biasing direction that is reversed in response to rotational displacement of the arm as the operating rod is operated. , a closing spring that presses and urges the shutter toward one of the valve seats, and a closing spring that is interposed between the arm and the shutter to maintain a relative angle between the shutter and the arm; A switching device for an intake port, comprising: a second spring having a spring pressure smaller than that of the spring.