JPH0710935Y2 - Intermediate link mechanism of constant speed traveling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an intermediate link mechanism for a constant speed traveling device, and more particularly to an intermediate link mechanism for a constant speed traveling device that is suitable for use in an operating system of an automobile engine.

[Prior Art] Recently, various constant speed traveling devices (auto cruising devices) for automatically operating an engine such as an automobile engine at a constant speed have been developed.

FIG. 3 is a schematic diagram showing a schematic configuration of a conventional example of a vehicle constant-speed traveling device. The constant-speed traveling device A is interposed between the engine 1 and the accelerator pedal 4, and Valve side cable 5 connected to the throttle valve 1a
And the pedal side cable 7 connected to the accelerator pedal 4
And these valve side cable 5 and pedal side cable 7
And an intermediate link mechanism 2 ″ connected to each other and a constant speed traveling actuator 3 capable of driving the intermediate link mechanism 2 ″. In FIG. 3, reference numeral 6 indicates a dash panel.

The constant speed traveling actuator 3 of the constant speed traveling device A is
As shown in FIG. 4, a motor 8, a transmission 9 connected to the motor 8, a clutch 10 mounted on an output shaft 19 of the transmission 9, and an output-side rotary shaft 20 of the clutch 10 are provided. An actuator lever 18 that is mounted and can drive the intermediate link mechanism 2 ″, and its operation is controlled by a controller (not shown).

A contact plate 18a that can contact the intermediate link mechanism 2 ″ is provided at the tip of the actuator lever 18, and the actuator lever 18 is provided with a mounting member 20a such as a nut and a serration coupling (not shown). It is attached to the rotating shaft 20 so as to be integrally rotatable.

As shown in FIG. 4, the intermediate link mechanism 2 ″ includes a valve side lever (cab lever) 11 with which the contact plate 18a of the actuator lever 18 can abut, and a pedal side lever (pedal lever) 12. .

Each of the cab lever 11 and the pedal lever 12 is formed in a disk shape with a cutout portion (see FIG. 6), and both have shaft holes 11a and 12a formed in the central portion. A shaft 15 inserted into the shaft holes 11a and 12a is rotatably supported individually. The shaft 15 of the cab lever 11 and the pedal lever 12 is the rotary shaft of the actuator lever 18.
It is arranged on the same axis as 20.

The bushes 13a, 13b are provided between the shaft holes 11a, 12a and the shaft 15.
And the shaft 15 is fixed to the case 14 by a fixed ring.
17a and 17c are attached so as not to move in the axial direction. Further, a fixing ring 17b is also attached to an intermediate portion of the shaft 15 so that the cab lever 11 and the pedal lever 12 do not interfere with each other.

Further, as shown in FIG. 6, one end of the valve side cable 5 is fixed to the cab lever 11, and one end of the pedal side cable 7 is fixed to the pedal lever 12. An outer peripheral groove 11b around which the valve-side cable 5 can be wound and an outer peripheral groove 12b around which the pedal-side cable 7 can be wound are formed on the outer peripheries of the cab lever 11 and the pedal lever 12, respectively.

In addition, the cab lever 11 and pedal lever 12
Abutment plates 16 that can abut each other, as shown in FIGS.
a and 16b are projected respectively. Also, cab lever 1
As shown in FIG. 5, 1 is provided with a contact surface 11c with which the contact plate 18a can contact.

The cab lever 11, the pedal lever 12, and the actuator lever 18 are all set so as to have a neutral position as shown in FIGS. 5 and 6 by a return spring or the like (not shown). The throttle valve 1a is designed to close when the valve is released.

Then, the pedal lever 12 and the actuator lever 18
Is rotationally driven in the same direction as shown in FIGS. 5 and 6 from the neutral position by the accelerator pedal 4 and the constant speed traveling actuator 3 (in this example, is rotationally driven to the right as indicated by the arrow). Take an angle. The cab lever 11 is rotatably driven by one of the pedal lever 12 and the actuator lever 18, whichever has a larger rotation amount.

With such a configuration, when the accelerator pedal 4 is manually operated, when the accelerator pedal 4 is operated,
The pedal lever 12 rotates interlockingly via the pedal side cable 7, and the contact plate 16b presses and drives the contact plate 16a in response to the rotation of the pedal lever 12. At this time, the actuator lever 18 is held in the neutral position, and the contact surface 11c is separated from the contact plate 18a.

As a result, the cab lever 11 rotates together with the pedal lever 12, and the throttle valve is passed through the valve side cable 5.
1a opens the required amount.

On the other hand, during low speed traveling by the constant speed traveling device A, the accelerator pedal 4 is not depressed, so the pedal lever 1 is held in the neutral position, and the actuator lever 18 is driven by the constant speed traveling actuator 3 to take an appropriate angle. . Then, the contact plate 18a contacts the contact surface 11c and presses it. At this time, the contact plate 16b is the contact plate 1
Separate from 6a.

As a result, the cab lever 11 moves the actuator lever 18
And the throttle valve 1a is opened by a required amount through the valve side cable 5.

[Problems to be solved by the invention] By the way, such a constant-speed traveling device may be installed in a narrow portion such as an engine room of an automobile, so it is desired to make the device as small as possible.

However, in order to ensure the operation accuracy of the device at a constant level, it is necessary to make the levers 11, 12, 18 and the like of the intermediate link mechanism 2 ″ at a certain size or more.

Therefore, the development of an intermediate link mechanism that can reduce the size of the device while ensuring the operation accuracy has been a challenge.

The present invention has been devised in view of such problems,
An object of the present invention is to provide an intermediate link mechanism for a constant speed traveling device, which can be downsized while obtaining a desired operation accuracy.

[Means for Solving the Problems] Therefore, the intermediate link mechanism of the constant speed traveling device of the present invention is
The valve side cable, which is interposed between the engine and the accelerator pedal, is connected to the throttle valve of the engine, the pedal side cable is connected to the accelerator pedal, and the valve side cable and the pedal side cable are connected. In the constant-speed traveling device including an intermediate link mechanism and a constant-speed traveling actuator that can drive the intermediate link mechanism by an actuator lever, the intermediate link mechanism includes a valve-side cable connected to the actuator lever. The actuator has a shaft for pivotally supporting the valve-side lever and the pedal-side lever, the valve-side lever that can be driven and the pedal-side lever that is connected to the pedal-side cable and can drive the valve-side lever. It is provided coaxially with the rotation axis of the lever, and its It is characterized in that it is formed a hollow portion in the heart portion.

[Operation] In the above-described intermediate link mechanism of the constant-speed traveling device of the present invention, the shaft that pivotally supports the valve-side lever and the pedal-side lever is provided coaxially with the rotary shaft of the actuator lever, and Since the hollow portion is formed in the axial center portion, the axial length of the mechanism can be shortened by fitting a part of the rotary shaft of the actuator lever into the hollow portion.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a sectional view showing an intermediate link mechanism of a constant speed traveling device as a first embodiment of the present invention, and FIG. 2 shows an intermediate link mechanism of a constant speed traveling device as a second embodiment of the present invention. FIG. 3 is a sectional view showing the same members in FIG. 2 as those in FIG.

First, the intermediate link mechanism of the first embodiment will be described. Since the constant speed traveling device according to this embodiment is constructed in substantially the same manner as that of the conventional example, in addition to FIG.
Description will be made with reference to the left half of FIGS.

This constant speed traveling device A includes an engine 1 and an accelerator pedal 4
A valve side cable 5 connected to the throttle valve 1a of the engine 1, a pedal side cable 7 connected to the accelerator pedal 4, and the valve side cable 5 and the pedal side cable 7 It is composed of an intermediate link mechanism 2 that is connected and a constant speed traveling actuator 3 that can drive the intermediate link mechanism 2. The pedal-side cable 7 is provided so as to penetrate the dash panel 6.

The constant speed traveling actuator 3 of the constant speed traveling device A is
As shown in the left half of FIG. 4, a motor 8, a transmission 9 connected to the motor 8, a clutch 10 mounted on an output shaft 19 of the transmission 9, and an output side of the clutch 10. It is composed of an actuator lever 18 mounted on a rotary shaft 20 and capable of driving the intermediate link mechanism 2, and its operation is controlled by a controller (not shown).

A contact plate 18a that can contact the intermediate link mechanism 2 is provided at the tip of the actuator lever 18, and the actuator lever 18 is provided with a mounting member 20a such as a nut and a rotation shaft by a serration coupling (not shown). It is attached to 20 so that it can rotate integrally.

As shown in FIG. 4, the intermediate link mechanism 2 includes a valve side lever (cab lever) 21 with which the contact plate 18a of the actuator lever 18 can abut, and a pedal side lever (pedal lever) 22.

Both the cab lever 21 and the pedal lever 22 are formed in a disc shape with a cutout portion (see FIG. 6), and shaft holes 21a, 22a are formed in the central portion of each of these. A shaft 25 inserted into the shaft holes 21a and 22a is rotatably supported individually.

And the shaft of this cab lever 21 and pedal lever 22
Reference numeral 25 is a hollow shaft (pipe) having a hollow portion 25a at its shaft center portion, and is arranged on the same shaft center as the rotary shaft 20 of the actuator lever 18.

Further, the end portion of the rotating shaft 20 and the mounting member 20a are hollow portions 25a.
It is fitted in and arranged inside. Accordingly, the arm length (lever offset amount) of the contact plate 18a is shorter than that of the conventional one (see FIG. 4).

The bushes 23a, 23b are provided between the shaft holes 21a, 22a and the shaft 25.
, And the shaft 25 is fixed to the case 24 by a fixed ring.
It is attached so that it does not move in the axial direction at 27a and 27c. Further, a fixing ring 27b is also attached to an intermediate portion of the shaft 25 so that the cab lever 21 and the pedal lever 22 do not interfere with each other.

Further, as shown in FIG. 6, one end of the valve side cable 5 is fixed to the cab lever 21, and one end of the pedal side cable 7 is fixed to the pedal lever 22. An outer peripheral groove 21b around which the valve-side cable 5 can be wound and an outer peripheral groove 22b around which the pedal-side cable 7 can be wound are formed on the outer peripheries of the cab lever 21 and the pedal lever 22, respectively.

In addition, the cab lever 21 and pedal lever 22
Abutment plates 16 that can abut each other, as shown in FIGS.
a and 16b are projected respectively. Also, cab lever 2
As shown in FIG. 5, 1 is provided with a contact surface 21c with which the contact plate 18a can contact.

The cab lever 21, the pedal lever 22, and the actuator lever 18 are all set by a return spring (not shown) so as to take a neutral position as shown in FIGS. 5 and 6, and the cab lever 21 is set in the neutral position. The throttle valve 1a is designed to close when the valve is released.

Then, the pedal lever 22 and the actuator lever 18
Is rotationally driven in the same direction as shown in FIGS. 5 and 6 from the neutral position by the accelerator pedal 4 and the constant speed traveling actuator 3 (in this example, is rotationally driven to the right as indicated by the arrow). Take an angle. The cab lever 21 is rotatably driven by one of the pedal lever 22 and the actuator lever 18, whichever has a larger rotation amount.

It should be noted that the accelerator pedal 4 can be operated even when the device A travels at a constant speed.
When the pedal is depressed by a predetermined amount, the manual operation via the accelerator pedal 4 is automatically switched.

Since the intermediate link mechanism of the constant speed traveling device as one embodiment of the present invention is constructed as described above, the operation thereof is the same as the conventional one.

That is, in the case of manual operation by the pedal lever 22, when the accelerator pedal 4 is operated, the pedal lever 22 is interlocked and rotated via the pedal side cable 7, and according to the rotation of the pedal lever 22, the contact plate 16b. Presses and drives the contact plate 16a. At this time, the actuator lever 18 is held in the neutral position, and the contact surface 21c is separated from the contact plate 18a.

As a result, the cab lever 21 rotates integrally with the pedal lever 12, and the throttle valve is passed through the valve side cable 5.
1a opens the required amount.

On the other hand, during low speed traveling by the constant speed traveling device A, the accelerator pedal 4 is not depressed, so the pedal lever 1 is held in the neutral position, and the actuator lever 18 is driven by the constant speed traveling actuator 3 to take an appropriate angle. . Then, the contact plate 18a contacts the contact surface 21c and presses it. At this time, the contact plate 16b is the contact plate 1
Separate from 6a.

As a result, the cab lever 21 moves to the actuator lever 18
And the throttle valve 1a is opened by a required amount through the valve side cable 5.

It should be noted that the accelerator pedal 4 can be operated even when the device A travels at a constant speed.
When you press down a predetermined amount, it switches to manual operation.

Then, in the intermediate link mechanism of the constant speed traveling device, the shaft 25 is a hollow shaft having a hollow portion 25a in its axial center portion, and the end portion of the rotary shaft 20 and the mounting portion 20a are fitted into the hollow portion 25a. Therefore, there is an advantage that the coupling portion between the constant speed traveling actuator 3 and the intermediate link mechanism 2 is shortened in the axial direction, which can contribute to downsizing of the entire device.

Moreover, since the shaft system of the shaft 25 increases, the shaft rigidity increases,
Since the backlash at the time of actuation of each lever 18, 21, 22 is reduced, it contributes to the improvement of the operation accuracy and durability of the intermediate link mechanism 2 and the entire device.

Furthermore, since the arm length (lever offset amount) of the contact plate 18a is shorter than that of the conventional one (see FIG. 4), blurring during operation of the contact plate 18a is suppressed, and as a result, Also contributes to the improvement of the operating accuracy and durability of the intermediate link mechanism 2 and thus the entire apparatus.

Next, the second embodiment will be described. In this embodiment, the valve side lever (cab lever) 21 and the pedal side lever (pedal lever) 22 of the intermediate link mechanism 2'are the first.
The left and right are arranged opposite to the embodiment. The rotary shaft 20 'of the actuator lever 18' is extended so as to penetrate the hollow portion 25a of the shaft 25 and project to the other end of the hollow portion 25a. Accordingly, the actuator lever 18 'is It is arranged at a position opposite to the constant speed traveling actuator 3. Further, the other parts are configured in substantially the same manner as in the first embodiment, and the description thereof will be omitted.

With such a configuration, the intermediate link mechanism 2'of the constant speed traveling device of the second embodiment can also obtain the same operation and effect as those of the first embodiment.

Then, by appropriately selecting the lever layout of the first embodiment described above and the lever layout of the second embodiment different from this, the flexibility of the cable layout is increased,
Mounting of the device becomes easier.

[Effects of the Invention] As described in detail above, according to the intermediate link mechanism of the constant speed traveling device of the present invention, the shafts of the valve side lever and the pedal side lever have the same axis center with the rotary shaft of the actuator lever. Since it is provided and the hollow portion is formed in the axial center portion, there is an advantage that the entire device can be downsized and the durability and operating accuracy of the device can be improved. There is also an advantage that the degree of freedom in mounting is increased and the arrangement is easy.

[Brief description of drawings]

FIG. 1 is a sectional view showing an intermediate link mechanism of a constant speed traveling device as a first embodiment of the present invention, and FIG. 2 shows an intermediate link mechanism of a constant speed traveling device as a second embodiment of the present invention. 3 to 6 are sectional views showing the intermediate link mechanism of a conventional constant speed traveling device, FIG. 3 is a schematic diagram showing a schematic configuration of the constant speed traveling device, and FIG. 4 is an intermediate link thereof. FIG. 5 is a schematic side view showing the relationship between the valve side lever and the actuator lever, and FIG. 6 is a schematic side view showing the relationship between the valve side lever and the pedal side lever. is there. DESCRIPTION OF SYMBOLS 1 ... Engine, 1a ... Throttle valve, 2, 2 '... Intermediate link mechanism, 3 ... Constant speed traveling actuator, 4 ... Accelerator pedal, 5 ... Valve side cable, 7 ... Pedal side cable, 8 ... Motor, 9 ... Speed change Machine, 10 ... Clutch, 16a, 16b
... Contact plate, 18, 18 '... Actuator lever, 18a
... Contact plate, 19 ... Transmission output shaft, 20, 20 '... Rotation shaft, 20a ... Mounting member, 21 ... Valve side lever (cab lever), 21a ... Shaft hole, 21b ... Outer peripheral groove, 21c ... Contact Surface, 22 ... Pedal lever (pedal lever), 22a ... Shaft hole, 22b ... Outer peripheral groove, 23a, 23b ... Bushing, 25 ... Shaft, 25a ... Shaft hollow part, 27
a, 27b, 27c ... fixing ring, A ... constant speed traveling device.

Claims (1)

[Scope of utility model registration request] 1. A valve-side cable which is interposed between an engine and an accelerator pedal and which is connected to a throttle valve of the engine, a pedal-side cable which is connected to the accelerator pedal, the valve-side cable and the pedal. In a constant speed traveling device including an intermediate link mechanism to which a side cable is connected and an actuator for constant speed traveling that can drive the intermediate link mechanism by an actuator lever, the intermediate link mechanism connects the valve side cable. A valve-side lever that can be driven by the actuator lever and a pedal-side lever that is connected to the pedal-side cable and can drive the valve-side lever, and pivotally supports the valve-side lever and the pedal-side lever. When the shaft is provided in the same axis center as the rotary shaft of the actuator lever, Moni, characterized in that it is formed a hollow portion in its axial center portion, an intermediate linkage constant speed running device.