JPH0746747Y2 - Support device for accelerator cable in internal combustion engine for vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an improvement of a device for supporting an accelerator wire that interlocks and connects a throttle valve and an accelerator pedal in an internal combustion engine mounted on a vehicle.

[Conventional technology]

In general, a throttle valve in an internal combustion engine mounted on a vehicle is configured so that the throttle valve and an accelerator pedal provided in the vehicle slide between the pipe-shaped outer cable and the outer cable, as is well known in the art. By connecting with an accelerator cable composed of an inner wire that is freely inserted, it is configured to open and close when the accelerator pedal is depressed.

In this case, in order to transmit the movement of the accelerator pedal to the throttle valve via the inner wire, the end portion on the accelerator pedal side and the end portion on the throttle valve side of both ends of the outer cable with respect to the inner wire are It is necessary to immovably attach to the body frame or the like.

Therefore, when the end portion of the outer cable is fixedly attached to the throttle valve side so as not to move, conventionally, for example,
As described in Japanese Utility Model Laid-Open No. 59-190944, a bracket is attached to a throttle body provided with the throttle valve, and an end portion of the outer cable on the throttle valve side is immovably attached to the bracket. It is configured to wear.

[Problems to be solved by the device]

However, since the throttle body equipped with the throttle valve is considerably heavy, it vibrates greatly,
As described above, the throttle body side end portion of the outer cable is engaged with the throttle body via the bracket. As a result, a large vibration in the throttle body is transmitted to the accelerator pedal via the accelerator cable. There is a problem that it is transmitted as chatter vibration.

In addition, if the throttle valve side end of the outer cable is attached to the throttle body via a bracket that is attached to the throttle body, the throttle valve side end of the outer cable to the throttle valve Since the distance between them is short, the accelerator for rotating the throttle valve with the accelerator cable has a circular arc groove with a radius eccentric to the throttle valve shaft on the outer periphery of the throttle lever fixed to the throttle valve shaft. By providing the accelerator cable around the throttle wire side end of the inner wire around the arc groove, the rotation angle of the throttle valve per unit depression angle of the accelerator pedal is gradually increased with the opening of the throttle valve, or A so-called non-linear accelerator that is configured to be small In the case of an outer cable, the portion of the inner wire projecting from the outer cable is bent at a large angle with respect to the axis of the outer cable as the throttle lever having the eccentric arc groove is rotated. Therefore, twisting occurs between the outer cable and the inner wire, which not only makes the pulling force of the inner wire, that is, the depression of the accelerator pedal heavy, but also causes the problem that the durability of the inner wire deteriorates.

This problem can be solved by increasing the distance from the end of the outer cable to the throttle valve, but to increase the distance from the end of the outer cable to the throttle valve, increase the length of the bracket. Since the length must be increased, the bracket for immovably attaching the outer cable becomes large in size and has another complicated shape.

According to the present invention, a recent internal combustion engine includes, as an intake manifold, a chamber extending in a direction of a cylinder row, and an intake pipe line connecting the chamber and each cylinder independently for each cylinder. Attention is paid to the fact that a so-called inertial supercharging type intake manifold having a throttle body with a throttle valve is provided at one end of the above, and utilizing the structure of this inertial supercharging type intake manifold, the conventional accelerator The purpose of the present invention is to solve the problems of the cable supporting device.

[Means for Solving the Problems]

In order to achieve this object, the present invention comprises, on one side surface in the longitudinal direction, a chamber extending in the direction of the cylinder row, and an intake pipe line that connects the chamber and each cylinder independently for each cylinder. In an internal combustion engine for a vehicle, in which an inertial supercharged intake manifold is joined, and a throttle body having a throttle valve is attached to one end of the chamber, an accelerator cable for the throttle valve in the throttle body is connected to the longitudinal direction of the chamber. The throttle cable side end of the inner wire of the accelerator cable is attached to the throttle lever fixed to the throttle valve shaft while being arranged so as to extend along the direction.
The throttle valve side end of the pipe-shaped outer cable of the accelerator cable is immovably attached to a bracket attached to the other end of the chamber.

[Function and effect of device]

As described above, the accelerator cable is arranged so as to extend along the longitudinal direction of the chamber, and the end portion on the throttle valve side of the inner wire of this accelerator cable is
While being engaged with a throttle lever fixed to a throttle valve shaft, the throttle valve side end of the outer cable of the accelerator cable is immovably engaged with a bracket attached to the other end of the chamber. Then, the distance from the throttle valve side end of the outer cable to the throttle valve can be increased by utilizing the length of the chamber. Therefore, in order to increase the distance, the outer cable concerned is increased. Enlarging the bracket for immovably attaching the end of the
And does not invite complicating its shape,
In other words, a so-called non-linear accelerator can be applied without increasing the size of the bracket and complicating the shape.

Moreover, since the throttle valve side end of the outer cable of the accelerator cable is engaged with the other end of the chamber, the other end of the chamber is separated from the one end to which a considerably heavy throttle body is attached. Since the vibration at the other end is much smaller than that at the one end, chatter vibration transmitted to the accelerator pedal via the accelerator cable can be significantly reduced.

[Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a vehicle body frame, and a plurality of cylinders are provided in an engine room 2 formed in a front portion of the vehicle body frame 1. The internal combustion engine 3 including
Is mounted laterally so that the crank axis line 4 is substantially perpendicular to the traveling direction of the vehicle in a plan view.

Reference numeral 5 denotes an inertial supercharging type intake manifold attached to one side surface in the longitudinal direction of the internal combustion engine 3. The intake manifold 5 includes a chamber 6 extending in the cylinder row direction of the internal combustion engine 3, and the chamber 6. 6 and each of the cylinders are independently connected to each other by an intake pipe line 7, and a throttle body 8 having a built-in throttle valve 9 is attached to one end of the chamber 6 in the longitudinal direction. This throttle body 8 has an air cleaner
An air introduction pipe 11 from 10 is connected.

Reference numeral 12 denotes an accelerator cable for interlockingly connecting the throttle valve 9 in the throttle body 8 and an accelerator pedal 13 provided inside the vehicle,
The accelerator cable 12 is a pipe-shaped outer cable 14
And an inner wire 15 slidably inserted into the outer cable 14, the accelerator cable 12
Is disposed so as to extend along the longitudinal direction of the chamber 6 at a site between the chamber 6 and the internal combustion engine 3 in a plan view.

An arc groove 18 having a radius having an eccentric center with respect to the valve shaft 16 is provided on the outer periphery of the throttle lever 17 fixed to the valve shaft 16 of the throttle valve 9, and the arc wire 18 has an inner wire in the accelerator cable 12. After winding 15, the tip 15a of the inner wire 15 is attached to the accelerator lever 17.

On the other hand, in the chamber 6, a bracket 19 is provided at the other end on the side opposite to the throttle body 8 and a bolt 20.
The throttle cable side end 14a of the outer cable 14 of the accelerator cable 12 is immovably attached to the bracket 19 so as to be immovable.

In this way, when the throttle valve side end of the outer cable 14 of the accelerator cable 12 is immovably attached to the other longitudinal end of the chamber 6 via the bracket 19, the end of the outer cable 14 is fixed. 14a
Since the distance from to the throttle lever 17 increases, the change in the angle when the inner wire 15 bends with respect to the axis of the outer cable 14 with the rotation of the throttle lever 17 can be reduced.

[Brief description of drawings]

1 is a plan view and FIG. 2 is an enlarged sectional view taken along the line II-II of FIG. 1 ... Body frame, 2 ... Engine room, 3 ... Internal combustion engine, 5 ... Intake manifold, 6 ... Chamber,
7 ... Intake line, 8 ... Throttle body, 9 ... Throttle valve, 10 ... Air cleaner, 12 ... Accelerator cable, 13 ... Accelerator pedal, 14 ... Outer cable, 15
…… Inner wire, 16 …… Throttle valve stem, 18 ……
Throttle lever, 19 …… Bracket.

Claims (1)

[Scope of utility model registration request] 1. An inertial supercharging type having, on one side surface in a longitudinal direction, a chamber extending in the direction of a cylinder row, and an intake pipe line connecting the chamber and each cylinder independently for each cylinder. In an internal combustion engine for a vehicle, in which an intake manifold is joined, and a throttle body having a throttle valve is attached to one end of the chamber, an accelerator cable for the throttle valve in the throttle body,
A throttle valve side end of the inner wire of the accelerator cable is arranged so as to extend along the longitudinal direction of the chamber and is engaged with a throttle lever fixed to the throttle valve shaft, while the accelerator cable pipe is connected. A support device for an accelerator cable in an internal combustion engine for a vehicle, wherein an end portion of the outer cable on the throttle valve side is immovably attached to a bracket attached to the other end of the chamber.