JPS62166123A - Hill holder device for automobile - Google Patents

Abstract

PURPOSE:To prevent an automobile from reversing due to its dead weight even in a case that an engine is stopped by insufficient depression of an accelerator pedal when the automobile is started on an ascending road, by constituting a device such that it holds a pressure of brake fluid interlocking to a predetermined distance depression of the accelerator pedal. CONSTITUTION:An action limiting means, constituted of the first and second control members 24, 26, is provided in an interlocking mechanism, formed by, for instance, a clutch pedal 9 and a brake fluid pressure holding value 7, and when the depression of an accelerator pedal 10 is in a predetermined distance or less, a device is constituted so as to break an interlocking relation between the clutch pedal 9 and the brake fluid pressure holding valve 7. And when the depression of the accelerator pedal 10 is in the predetermined distance or less, a brake fluid pressure is maintained by the brake fluid pressure holding valve 7 even if the clutch pedal 9 is returned. Accordingly, even in a case such that an engine is stopped because of insufficient depression of the accelerator pedal 10 when an automobile is started on an ascending road, the automobile can be prevented from reversing due to its dead weight by holding the brake fluid pressure in an operative condition.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a hill holder device for a motor vehicle that maintains the brake in an activated state when starting on an uphill road.

(Prior art) Generally, when starting a car from a stopped state, first depress the clutch pedal with your left foot to disengage the clutch, and then
In this state, after shifting the transmission from the neutral position to the driving position, the clutch pedal is gradually released and the clutch is engaged while pressing the accelerator pedal with the right foot. In addition to these operations, it is necessary to operate the brake pedal. In other words,
To prevent the car from moving due to its own weight while the clutch pedal is depressed, first press the brake pedal with your right foot, then shift the transmission in this state, then gradually release the clutch pedal while pressing your right foot. It moves from the brake pedal to the gas pedal to release the brake and at the same time increase engine output to the level necessary for starting the vehicle. However, starting operation on such a boarding road is difficult especially for beginners. It is difficult to engage the clutch with the left foot and release the brake or press the accelerator pedal with the right foot in a timely manner, resulting in engine stalling due to the clutch engagement being relatively early, and brake release being too slow. This may cause the vehicle to back up due to excessive speed.

To solve the above-mentioned problem regarding starting a car on an uphill road, there is an idea disclosed in, for example, Japanese Utility Model Application Publication No. 55-16930. This invention is equipped with a valve means that maintains the brake fluid pressure even if the foot is released from the brake pedal when starting on a climbing road, and the valve means is operated in conjunction with the operation of the clutch pedal. This is what I did. According to this, it is possible to maintain the brake in an operating state even when the foot is released from the brake pedal, and the holding of the brake fluid pressure can be automatically released when the clutch pedal is returned by a predetermined amount. , it becomes possible to connect the clutch and release the brake at the optimal timing.

However, even with such a device, if the accelerator pedal is not depressed enough when the brake is released in conjunction with the return operation of the clutch pedal, the car will not start and the engine will stop. , the car will move backwards since the brakes have already been released.

(Object of the Invention) The present invention addresses the above-mentioned problems regarding hill holder devices for automobiles, and is designed to maintain the state of brake fluid pressure in conjunction with the return operation of the clutch pedal when starting on an uphill road. The purpose is to prevent the vehicle from moving backwards due to its own weight even if the engine stops due to insufficient depression of the accelerator pedal when the vehicle is released.

(Structure of the Invention) The automobile hill holder device according to the present invention is characterized in that it is structured as follows in order to achieve the above object.

In other words, there is a clutch pedal that disengages the clutch by the pedal force, a brake pedal that generates brake fluid pressure by the pedal force and applies braking force to the wheels, and a brake pedal that maintains the brake fluid pressure when the clutch pedal is depressed and returns the clutch pedal to a predetermined nine. In the configuration, the brake fluid pressure retaining means is provided in conjunction with the operation of the clutch pedal only when the accelerator pedal is depressed by a predetermined amount. It is provided with an operation limiting means for activating. This operation limiting means is provided, for example, in an interlocking mechanism between the clutch pedal and the brake fluid pressure holding means, and interrupts the interlocking relationship between the clutch pedal and the brake fluid pressure holding means when the amount of depression of the accelerator pedal is less than a predetermined amount. When the amount of depression of the accelerator pedal is less than or equal to a predetermined amount, the brake fluid pressure is maintained by the fluid pressure retention means even if the clutch pedal is released.

The brake fluid pressure holding means not only holds the brake fluid pressure itself generated in the mask cylinder when the brake pedal is depressed and is supplied to the brake equipment of each wheel, but also mechanically maintains the brake pedal in the depressed position. In this case, when the accelerator pedal is depressed below a predetermined amount, the brake fluid pressure may be maintained indirectly.
Even if the clutch pedal is released, the brake pedal will remain in the depressed position.

(Effects of the Invention) As described above, according to the present invention, the brake fluid pressure retaining means retains the brake fluid pressure when starting on an uphill road and releases this retention when the clutch pedal is returned by a predetermined amount. In the hill holder device of a car equipped with a brake pedal, the brake fluid pressure holding means is operated in conjunction with the clutch pedal only when the accelerator pedal is depressed to a predetermined level. If the engine stops due to insufficient pressure on the accelerator pedal when the pedal is released, the brake will remain in the operating state, and in such a case the brake will be released, resulting in damage to the vehicle. This will prevent it from moving backwards due to its own weight. This prevents collisions with following cars due to unexpected backing of the car, and allows even beginners to safely and reliably start uphill by depressing the clutch pedal again to start the engine. become.

(Example) Examples of the present invention will be described below.

First, the basic configuration of the brake system will be explained with reference to FIG. 1. The system includes a brake pedal 1 and a mask that is activated via a booster 2 by the pedal force applied to the pedal 1 to generate brake fluid pressure. A brake device 51 that is provided on the cylinder 3 and the front, rear, left, and right wheels 41 to 44 and applies braking force to each wheel in response to the brake fluid pressure.
~54, the mask cylinder 3 and each brake device 51
A hydraulic pressure holding valve that is installed on the brake vibro...6 that connects ~54 and maintains the brake fluid pressure even after the -H brake pedal 1 is depressed when starting on an uphill road even after the pedal 1 is released. 7, the brake fluid pressure is also installed on the brake vibro...6 and is supplied to the brake devices 53.54 of the rear wheels 43.44, and the brake fluid is supplied to the brake devices 51.52 of the front wheels 4+ and 42. It is composed of a blobbing valve 8 that balances the pressure.

Here, in this embodiment, the hydraulic pressure holding valve 7 is
It is installed on the brake vibro...6 extending from the mask cylinder 3 to the brake devices 52 and 53 of the front right wheel 42 and the rear left wheel 43, and maintains brake fluid pressure for these brake devices 5z and 53. ing.

However, this hydraulic pressure holding valve 7 is adapted to perform the above-mentioned hydraulic pressure holding operation on the uphill road in conjunction with the operation of the clutch pedal 9 and the accelerator pedal 10. That is, the hydraulic pressure holding valve 7 is provided with an operating section 7a, and
A release lever 13, which is swung through a clutch cable 11 to disconnect the clutch 12 when the clutch pedal 9 is depressed, is connected to the operating section 7a through a first cable 14, and when the accelerator pedal 10 is depressed, the accelerator cable is 15 to rotate the engine's carburetor 1
Pulley 1 that opens and closes the throttle valve at 6
7 and the operating section 7a are connected via a second cable 18, so that the operation of the hydraulic pressure holding valve 7 is controlled by the operation of the clutch pedal 9 and the accelerator pedal 10.

Next, to explain the structure of this hydraulic pressure holding valve 7 and its operation part 7a, as shown in FIG. 1 is connected to the brake fluid inlet 20
A also has a brake vibro 2 on both sides of the front end that connects to the brake device 52 of the right front wheel 42 shown in FIG. and are connected respectively 2
Brake fluid outlets 20b, 20b are provided, as well as an inlet 20a and an outlet 20b.

201) is provided.

Then, when the valve 7 is tilted rearward and downward as shown in the figure, it is transferred rearward by its own weight to the seat surface 200.
A ball 21 is provided which blocks the passage 20c by coming into close contact with d, and behind the ball 21 is a bin 22 rotatably supported by the main body 20 and located at an eccentric position.
a, and a bushing rod 23 which is moved forward through the bin 22a from the position shown by the solid line in the figure to the position shown by the chain line by the rotation of the shaft 22. When moved forward, the tip part moves the ball 21 away from the seat surface 20d and moves into the passage 20.
It is designed to communicate with C.

Further, the operating portion 7a of the hydraulic pressure holding valve 7 includes a substantially fan-shaped first operating member 24 that is fixed to one end of the operating shaft 22 and rotates integrally with the shaft 22, and a first operating member 24 that is overlapped with the member 24. and an L whose one end is pivotally connected to the member 24 using a fulcrum pin 25.
The first operating member 24 is held at the initial position shown in the figure by a first spring 27 installed between the first operating member 24 and the fixed member, and the second operating member 24 is held at the initial position shown in the drawing.
6 is similarly held at the initial position shown in the figure by a second spring 28 installed between it and the first operating member 24.

When the first operating member 24 is in the initial position, the eccentric pin 22a of the operating shaft 22 is in the sideward position shown by the solid line, and from this state the first operating member 24 and the operating shaft 22 are moved in the entry direction. When rotated by a predetermined amount, the eccentric pin 22a pushes the bushing rod 23 forward. In addition, the first operating member 24 and the second operating member 2
Elongated holes 24a and 26a are respectively formed in the first operating member 24, and a bent portion 248' is provided at the rear end of the elongated hole 24a of the first operating member 24. When in the initial position shown relative to member 24, both members 2
The long holes 24a and 26a of 4.26 are substantially aligned except for the bent portion 24a'. A first cable 1 led from the release lever 13 of the clutch 12
The pin member 14a fixedly attached to the end of the lever 14 is engaged across the elongated holes 24a and 26a in both the operating members 24 and 26, and the release lever 13 is in the clutch connected position @ (the non-depressed position of the clutch pedal 9). When the bottle member 14a is in
are located at the front ends of the elongated holes 24a and 26a shown by solid lines, and when the release lever 13 is swung in 8 directions to the clutch disengaged position (clutch pedal depression position), the bin member 14a is They are located at the rear ends of the elongated holes 24a and 26a.

Furthermore, a second cable 1 led from the pulley 17 in the carburetor 16 is connected to the end of the second operating member 26 on the side opposite to the fulcrum.
8 is attached. Here, the pulley 17 is a first pulley 17a around which the end of the accelerator cable 15 led from the accelerator pedal 10 is wound, and a first pulley 17a around which the end of the second cable 18 leading to the second operating member 26 is wound. second
Both pulleys 17a and 17b rotate together with a support shaft 17C (throttle valve opening/closing shaft). Then, when the accelerator pedal 10 is depressed, the first. The second pulleys 17a and 17b are rotated in the C direction, and the second operating member 26 is further connected via the second cable 18.
At this time, the end of the first cable 14 is pulled. a is the first. If the second operating member 24.26 is located at the rear end of the elongated holes 24a, 26a, the second operating member 26 is rotated in the D direction against the second spring 28, and the bin member 14a is rotated.
is introduced into a bent portion 24a' provided at the rear end of the long hole 24a in the first operating member 24
(See Figure 3). A spring 29 is provided in the middle of the second cable 18 so that the second operating member 26 is rotated in the D direction when the accelerator pedal 10 is depressed for a predetermined amount or more.

Next, the operation of the above embodiment will be explained.

When we first press the brake pedal 1 with our right foot in order to start the car on an uphill road, the brake fluid pressure generated in the mask cylinder 3 in the brake system shown in FIG. The brake force is supplied to the equipped brake devices 51 to 54 to apply braking force to each wheel. Brake fluid pressure is supplied through a passage 20c provided therein. Then, in this state, the parking brake (not shown) is released, the clutch pedal 9 is depressed with the left foot to disengage the clutch 12, and the transmission (not shown) is shifted from the neutral position to the driving position, Next, the right foot is moved from the brake pedal 1 to the accelerator pedal 10. In this case, the clutch pedal 9
When the release lever 13 of the clutch 12 is swung in the direction B as the lever 13 is depressed, the bottle member at the tip of the first cable 14 led from the lever 13 is released in the operating section 7a of the hydraulic pressure holding valve 7. 14a is the first. The elongated holes 24a, 26a in the second operating member 24.26 move from the front end to the rear end.

In addition, in the hydraulic pressure holding valve 7, the ball 21 on the passage 2OC moves rearward under its own weight and comes into close contact with the seat surface 20d, so the passage 20c is blocked, so even if the right foot is released from the brake pedal 1, the right front wheel 42 and the brake devices 52, 53 of the left rear wheel 43 are kept in operation. This prevents the vehicle from moving backwards, and makes it possible to perform the starting operation by returning the clutch pedal 9 (connecting the clutch 12) with the left foot and depressing the accelerator pedal 10 with the right foot with plenty of time.

However, in this starting operation, assuming that the accelerator pedal 10 is sufficiently depressed to the position where the engine output necessary for starting is obtained, the pulley 17 of the carburetor 15 is The second operating member 26 connects to the first operating member 24 via the second cable 18.
As a result, as shown in FIG. 3, the bin member 14a at the tip of the first cable 14
is introduced into the bent portion 248' at the rear end of the elongated hole 24a in the first operating member 24. Therefore, when the clutch pedal 9 is gradually returned to connect the clutch 12, when the first cable 14 is pulled in the E direction due to the rocking of the release lever 13 in the anti-B direction, the first cable 14 is pulled in the E direction as shown in FIG. The first operating member 24 is rotated in the opposite direction against the first spring 27. Therefore, in the hydraulic pressure holding valve 7, the operation shaft 22 rotates, and the eccentric pin 22a on the shaft 22 pushes the bushing rod 23 forward, and the rod 23 separates the ball 21 from the seat surface 20d, and the passage 2 'Oc will be communicated.

As a result, the brake devices 5 of the right front wheel 42 and the left rear wheel 43
At 2.53, the brake fluid pressure that had been maintained in the supply state is removed, these brake devices 52 and 53 are released, and the vehicle is started when the accelerator pedal 10 is sufficiently depressed. Become.

On the other hand, if the amount of depression of the accelerator pedal 10 during the start operation is insufficient, the load acting on the engine will exceed the output when the clutch pedal 9 is returned to a certain level, and the engine will stop. . At this time,
When the brake fluid pressure holding action by the hydraulic pressure holding valve 7 is released in conjunction with the return operation of the clutch pedal 9, the brake of the automobile is released and the vehicle moves backwards with the engine stalled. However, if the accelerator pedal 10 is not depressed enough, the
Since the second operating member 26 is not rotated in the D direction, the bottle member 14a at the tip of the first cable 14 is not rotated in the first operating member 26.
1, without being introduced into the bent part 24a' of the elongated hole 24a in
Therefore, when the first cable 14 is pulled in the E direction in conjunction with the return operation of the clutch pedal 9, the bin member 14
a is the elongated hole 24a, 26 of the first and second operating members 24.26;
It simply moves within a from the position shown by the chain line in FIG. 2 to the position shown by the solid line. In other words, in this case, the first operating member 2
4 and the operating shaft 22 of the hydraulic pressure holding valve 7 are not rotated in the forward direction, and the passage 20c in the valve 7 is maintained in a state where it is blocked by the ball 21. As a result, even if the engine stops when the clutch pedal 9 is returned due to insufficient depression of the accelerator pedal 10, the right front wheel 4
The brake devices 52, 53 of the second and left rear wheels 43 are kept in operation, and the vehicle is prevented from moving backwards.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an overall system diagram of the hill holder device, and FIG. 2 is an enlarged view of the main parts showing the configuration of the hydraulic pressure holding valve in the device and its operating members.
FIG. 3.4 is an enlarged view of the main parts showing the operating states of the operating parts in the hydraulic pressure holding valve. DESCRIPTION OF SYMBOLS 1... Brake pedal, 7... Brake fluid pressure holding means (hydraulic pressure holding valve), 9... Clutch pedal, 10
. . . Accelerator pedal, 24. 26 . . . Operation restriction means (first and second operating members). ; et al (1' Fig. 3 Fig. 4

Claims (1)

[Claims] (1) A clutch pedal that disengages the clutch by pedal force, a brake pedal that generates brake fluid pressure by pedal force and applies braking force to the wheels, and a brake pedal that maintains the brake fluid pressure mentioned above when the clutch pedal is depressed and the clutch pedal moves to a predetermined amount. A hill holder device for an automobile, which is equipped with a brake fluid pressure holding means that releases the holding of brake fluid pressure when the brake fluid pressure is returned, and which is linked to the operation of the clutch pedal only when the accelerator pedal is depressed by a predetermined amount. A hill holder device for an automobile, comprising an operation limiting means for operating a brake fluid pressure holding means.