JP2001241335A - Throttle opening control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the degree of freedom of an installing space, and to have a large swinging angle of an accelerator pedal, in a throttle opening control system wherein an actuator for actuating the accelerator pedal is installed outside an engine room. SOLUTION: This throttle opening control device 10 comprises: an actuator 11 containing an electric motor 17 driven by electricity; a rotating disk 35 attached so as to integrally rotate with an output shaft 27 of the actuator 11; an output arm 32 engaged with the rotating disk 35 at one end, and the accelerator pedal 1 for adjusting the throttle opening according to the swinging angle at the other end.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a throttle opening control mechanism for controlling a throttle opening of an engine.

[0002]

2. Description of the Related Art As a conventionally known throttle opening control mechanism, a technique disclosed in Japanese Patent Application Laid-Open No. Hei 10-44825 is known. In this technique, a vacuum pump type actuator is provided in an engine room, and an accelerator pedal is driven by a negative pressure to adjust an opening degree of a throttle valve.

In this technique, since an actuator is arranged in an engine room and an accelerator pedal is driven by a negative pressure hose or a wire, the actuator is configured to satisfy the performance in a severe environment in the engine room. It is necessary to consider heat resistance and vibration resistance of the actuator, which leads to an increase in the cost of the actuator itself. Further, wiring is required to electrically connect the engine room and the vehicle interior in which the computer is arranged.
There is a problem that the cost increases as a whole.

[0004] As a technique for solving the above problem,
Japanese Patent Application Laid-Open No. 10-315798 discloses that a rotating shoe, which is an operating member connected to an electric motor, is engaged with an accelerator pedal, and the rotating shoe is operated by energizing the electric motor to swing the accelerator pedal. An actuator for adjusting a throttle opening is disclosed. According to this technology, by arranging the electric motor near the accelerator pedal outside the engine room, there is no need to set heat resistance and vibration resistance more strictly than when an electric motor is installed inside the engine room. This eliminates the need for employing a high-performance actuator (electric motor) having excellent vibration resistance and vibration resistance, thereby suppressing an increase in cost.

[0005]

However, in the above-mentioned technology, the accelerator pedal is directly operated by the rotating shoe attached to the output shaft of the electric motor. May not be attached, which is not preferable in terms of versatility. In addition, since the output shaft arm is directly attached to the vicinity of the accelerator pedal, there is a problem that the rotation angle of the accelerator pedal cannot be made large and the control range of the throttle opening cannot be made large. .

In order to solve the above-mentioned problems, the present invention provides a throttle opening control mechanism of a type in which an actuator for operating an accelerator pedal is disposed outside an engine room. A technical object is to make the swing angle of the pedal large.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an invention according to claim 1 includes an actuator having a built-in electric motor driven by supply of electric power, and a first actuator which rotates integrally with an output shaft of the actuator. Output member and one end is first
The other end of the output member is engaged with an accelerator pedal that adjusts the throttle opening according to the swing angle, and
And a second output member that swings about one end and the other end as a swing center.

According to the first aspect of the invention, when power is supplied to the electric motor and the output shaft of the actuator is driven to rotate, the first output member is rotated with the rotation of the output shaft. When the first output member rotates, the second output member swings, so that the accelerator pedal engaged with the second output member swings and the throttle opening is adjusted.

In the throttle opening control mechanism of the present invention, the second
Since the rotation drive of the output shaft by the electric motor is transmitted to the accelerator pedal via the output member, restrictions on the position of the actuator with respect to the accelerator pedal are reduced. That is, even in a situation where the actuator cannot be disposed immediately near the accelerator pedal, the provision of the second output member enables the actuator to be disposed. Further, by setting the swing center of the second output member, the displacement amount of the other end of the second output member with respect to the rotation amount of the first output member, that is, the swing angle of the accelerator pedal can be arbitrarily set.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a conceptual diagram showing mounting of a throttle opening control mechanism 10 in the present embodiment on a vehicle.
In FIG. 1, reference numeral 1 denotes an accelerator pedal. The accelerator pedal 1 is connected to a throttle arm 5 for opening and closing a throttle valve of the engine by an accelerator cable 3.

A throttle valve (not shown) is connected to the throttle arm 5 so as to be integrally rotatable with the throttle arm 5. When the accelerator pedal 1 is swung by the driver, the throttle valve is actuated, and the throttle valve of the engine (not shown) is operated. The opening is adjusted.

The actuator 11 of the throttle opening control mechanism 10 has a built-in DC motor 17 as an electric motor which is fixed to the vicinity of the accelerator pedal 1 in the cab, is connected to a battery (not shown), and is driven by supplying electric power. It is connected to the accelerator pedal 1 via a first output member 35 and a second output member 32 described later so that the accelerator pedal 1 can be swung by the operation of the DC motor 17.

The actuator 11 has a built-in controller (not shown) for judging the operation of the throttle arm 5, and a vehicle speed signal line 7 transmitted from a transmission (not shown) is electrically connected to the controller. The controller may be provided separately from the actuator 11.

FIG. 2 is a diagram showing the throttle opening control mechanism 10 when the accelerator pedal 1 is not operated, and FIG. 3 is a diagram showing the throttle opening control mechanism 10 when the accelerator pedal 1 is operated due to the swing of the second output member 32. It is.

A rotary disk 35 as a first output member is formed so as to rotate with rotation of a rotary shaft 27 as an output shaft of the actuator 11, and an output arm 32 as a second output member has one end of the rotary disk 35. The other end is respectively engaged with the accelerator pedal 1 and is arranged so as to be swingable between one end and the other end as a swing center.
The accelerator pedal 1 that engages with the other end of the output arm 32
Swings about a fulcrum 1A formed on a dash surface 43 which is a wall separating the vehicle interior and the engine room,
At one end, a step portion 1a operated by the driver is formed, and at the other end, an engaging portion 1b is formed to engage with the output arm 32.

The housing 13 of the actuator 11 is fixed to a dash surface 43 via a bracket 41. The dash surface 43 is provided with a fulcrum 45 that forms the swing center of the output arm 32 at a position substantially at the center of the output arm 32.

The structure of the actuator 11 will be described. FIG. 4 is a configuration diagram showing a configuration of the actuator 11 of FIG. 2, and FIG. 5 is a cross-sectional view of the actuator 11 of FIG. In the housing 13 of the actuator 11, D
A wheel gear 21 constituting a speed reducer is installed so as to mesh with a worm gear 19 which is an output shaft of the C motor 17. Further, a small gear 23 is formed so as to rotate integrally with the wheel gear 21, and meshes with a gear portion 25 a on the outer periphery of the rotating gear 25.

The rotary gear 25 is supported by a rotary shaft 27 so as to be rotatable relative to each other, and a clutch input member 29 is fixed so as to be able to rotate integrally with the rotary gear 25.

As shown in FIG. 5, the rotating shaft 27 passes through the housing 13 and is rotatably supported by the housing 13. Further, a clutch output member 31 is fixed so as to be able to rotate integrally with the rotating shaft 27. The rotating shaft 27 penetrates the housing 13 so that both ends thereof protrude from the housing 13, and the rotating disk 35 and the output arm 32 are connected to one side of the rotating shaft 27, so that the accelerator pedal 1 located near the actuator 11 can be moved. Can be activated.

The clutch input member 29 and the clutch output member 31 function as an electromagnetic clutch by the action of the electromagnetic solenoid 33.

The rotating disk 35 will be further described.
The rotating disk 35 shown in FIG. 2 is fixed below the rotating shaft 27 in FIG. Rotating disk 3
A shoe pin 35a eccentric to the axis of the rotary disk 35 is fixed to the back of the rotary disk 5, and a rotary shoe 1 made of resin or rubber or the like is provided on the outer periphery of the shoe pin 35a.
The eccentric member is formed by fixing 5. Incidentally, 37
Reference numerals 39 and 39 denote limit switches that can be brought into contact with the rotary gear 25 in order to regulate the rotation range of the rotary disk 35.

Next, the output arm 32 will be further described. An elongated hole 32 a is formed at one end of the output arm 32, and the rotating shoe 15 is rotated with the rotation of the rotating disk 35.
The rotating disk 35 and one end of the output arm 32 are engaged with each other so as to slide in the long hole 32a. The other end of the output arm 32 is formed with a shoe pin 35a formed on the rotary disk 35 and a pin 32b having the same configuration as the rotary shoe 15. The pin 32b is formed on the other end of the accelerator pedal 1 so as to urge the accelerator pedal 1 only when the output arm 32 swings to increase the opening of the throttle valve.

The throttle opening control mechanism 1 having the above-described structure.
The operation of 0 will be described. When the controller determines that the throttle valve of the engine is operating based on the input vehicle speed signal and the stroke signal of the accelerator pedal 1, D is determined based on the operating signal from the controller.
Electric power is supplied to the C motor 17 to rotate the DC motor 17 and energize the electromagnetic solenoid 33 to attract the clutch input member 29 and the clutch output member 31 to each other. The rotation of the DC motor 17 rotates the wheel gear 21 and the small gear 23 integrally rotating with the wheel gear 21 that constitute the speed reducer via the worm gear 19, and rotates the rotating gear 25 clockwise in FIG.

The rotation of the rotary gear 25 causes the clutch output member 31 to rotate clockwise in FIG. 3 together with the rotary shaft 27 via the clutch input member 29, and the rotary disk 35 rotates clockwise in FIG. When the rotating disk rotates clockwise, the rotating shoe 15 is displaced while sliding in the elongated hole 32a of the output arm 32. When the rotary shoe 15 is displaced, the output arm 32 swings about the fulcrum 45, and the pin 32b of the output arm 32 moves the other end of the accelerator pedal 1 in the direction in which the opening of the throttle valve increases (to the right in FIG. 2). It is urged to move to the state of FIG. In the accelerator pedal 1, an accelerator cable 3 connected to the other end is pulled to the right in FIG. 2 to rotate the throttle arm 5 of the engine and adjust the opening of the throttle valve to a desired amount.

As shown in the present embodiment, the throttle opening control mechanism 10 is provided with an output arm 32 as a second output member between the actuator 11 and the accelerator pedal 1 so that the throttle opening control mechanism 10 The degree of freedom of the arrangement position of the actuator 11 is improved, and furthermore, the position of the swing center of the output arm 32 is changed so that the displacement amount of the other end of the output arm 32 with respect to the displacement amount of the rotary shoe 15, that is, the throttle valve Can be set arbitrarily.

The embodiment of the present invention has been described with reference to the drawings. However, the present invention is not limited to the above-described embodiment. For example, a fulcrum serving as the swing center of the second output member may be used. The first output member may be provided on the housing of the actuator instead of the dashed surface, or the first output member may be a member using an arm-shaped member instead of a disk-shaped rotating disk. The throttle according to the gist of the present invention may be used. Any form may be used as long as it is an opening control device.

[0027]

According to the present invention, since the rotational drive of the output shaft by the electric motor is transmitted to the accelerator pedal via the second output member, the position of the actuator with respect to the accelerator pedal is restricted. Less. That is, the arrangement position between the accelerator pedal and the actuator can be arbitrarily set within a certain range by the second output member. Further, by setting the swing center of the second output member, the displacement amount of the other end of the second output member with respect to the rotation amount of the first output member, that is, the swing angle of the accelerator pedal can be arbitrarily set.

[Brief description of the drawings]

FIG. 1 is a schematic view of a vehicle equipped with a throttle opening control mechanism according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a throttle opening control mechanism when the accelerator pedal is not swinging.

FIG. 3 is a diagram showing a throttle opening control mechanism when the accelerator pedal swings.

FIG. 4 is a configuration diagram showing a configuration of the actuator of FIG. 2;

FIG. 5 is a sectional view taken along line AA of the actuator of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Accelerator pedal 3 ... Throttle cable 10 ... Throttle opening control mechanism 11 ... Actuator 15 ... Rotating shoe (eccentric member) 17 ... DC motor (electric motor) 32 ... Output arm (second output member) 32a: elongated hole 35: rotating disk (first output member)

Claims (2)

[Claims] An actuator including an electric motor driven by supply of electric power, a first output member that rotates integrally with an output shaft of the actuator, one end swinging on the first output member, and the other end swinging. A second output member engaged with an accelerator pedal that adjusts the throttle opening in accordance with the angle, and slidably disposed about one end and the other end as a swing center. Control mechanism. 2. An eccentric member which is eccentric with respect to an axis of an output shaft of the actuator is formed on the first output member, and the eccentric member is slid on one end of the second output member on an inner peripheral side. 2. The throttle opening control mechanism according to claim 1, wherein an elongated hole movably engaged is formed.