JPH043896Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a brake for starting a vehicle on a slope, which improves the starting operation of a vehicle on a slope (hereinafter referred to as an uphill slope).

<Prior art> Conventional automobiles are usually equipped with one brake pedal, while automobiles used for training are equipped with two brake pedals, as seen in, for example, Japanese Utility Model Application No. 56-122658. By providing such a brake, an instructor riding along with the driver can also operate the brakes if he or she encounters danger while driving.

<Problems to be solved by the invention> However, even with a car for training purposes that is equipped with two brake pedals, when starting on a slope (uphill), it is difficult to release the brake pedal while depressing the accelerator pedal. Or, it was necessary to press the accelerator pedal while manually releasing the parking brake. Furthermore, if there is a lag between the timing of releasing the brake pedal or the timing of releasing the parking brake and the timing of depressing the accelerator pedal when starting on a slope, there is a possibility that the vehicle will move backwards.

The present invention was developed in view of the above circumstances, and an object of the present invention is to provide a brake for starting on a slope that can reliably prevent backward movement when starting on a slope despite its simple configuration.

<Means for Solving the Problems> In order to achieve the above object, the present invention includes interposing a brake valve operated by a brake pedal in a first air pipe line leading from an air tank to a brake chamber, and A brake valve operated by a brake pedal for starting on a slope is interposed in a second air conduit connected in parallel to the first air conduit. Further, a vehicle speed sensor for detecting the vehicle speed of the vehicle is provided, and a second air pipe leads to a brake valve operated by the hill start brake pedal when the vehicle start is detected based on the output of the vehicle speed sensor. It is characterized by the provision of a control valve that shuts off the road.

<Operation> When stopping the automobile, the brake valve provided in the first air pipe is opened by depressing the brake pedal, and air from the air tank is supplied to the brake chamber to operate the brake. Furthermore, when starting normally, the accelerator pedal is operated after the brake pedal is released by loosening the brake pedal.

On the other hand, when starting on a slope, when the car is stopped, depress the brake pedal for starting on a slope and supply air to the brake chamber via the second air pipe, which activates the brakes and causes the car to move backward. Depress the accelerator pedal while preventing it. When the car starts by pressing the accelerator pedal in this way, that is, when the vehicle speed exceeds 0 km/h and reaches, for example, 1 km/h, the control valve is activated by the signal from the vehicle speed sensor to open the second air The pipe is shut off to cut off the air supply to the brake valve operated by the brake pedal for starting on a hill. Then, the air in the brake chamber is discharged and the brakes are released, so the brakes are automatically released as the car starts without any special operations, and the car runs smoothly without backing up. Able to start. Note that while the vehicle is running, the second air pipe line is disconnected from the air tank, so even if the brake pedal for starting on a slope is depressed, the brake will not operate. Therefore, this brake pedal for starting on a slope can also be used as a footrest.

<Examples> Examples of the present invention will be described below in detail based on the drawings.

FIG. 1 is a brake system diagram showing an embodiment of the brake for starting on a slope according to the present invention, and FIG. The brake valve 2 is interposed in a first air pipe 5 leading from the air tank 3 to the brake chamber 4, and is opened by depressing the brake pedal 1. Air is supplied to the brake chamber 4 so that the brake can be operated. The air tank 3 is supplied with air discharged from an air compressor 6 driven by an engine (not shown).

Here, a brake pedal 7 for starting on a slope, which is independent from the brake pedal 1, is provided. As shown in FIG. 2, on the floor of the driver's seat, an accelerator pedal 8, a brake pedal 1, a steering shaft 9, and a brake pedal 7 for starting on a slope are arranged from the right side to the left side. Incidentally, since this embodiment is a non-clutch vehicle, a brake pedal 7 for starting on a hill is arranged at the position where a clutch pedal would normally be provided.

A second air conduit 11 is connected in parallel to the first air conduit 5, and the brake pedal 7 for starting on a slope is connected to the first air conduit 5 in parallel.
By interposing a brake valve 10 operated by a brake valve 10 in this second air pipe 11, even when the brake pedal 1 is released, if the brake pedal 7 for starting on a slope is depressed, the air tank 3 is opened. The air is supplied to the brake chamber 4 through the second air conduit 11. still,
Each of the brake valves 2 and 10 is constituted by a conventionally known brake valve, and outputs air at a pressure responsive to the depression force (stroke) of the brake pedal. Furthermore, by incorporating a conventionally well-known double check valve (not shown) at the confluence of the first air pipe line 5 and the second air pipe line 11, air supplied from one air line is transferred to the other air line. This prevents accidental discharge from the pipe.

An electromagnetic control valve 12 is provided in the second air pipe line 11 leading from the air tank 3 to the brake valve 10,
By supplying the output signal of the vehicle speed sensor 13 to this control valve 12, when the start of the vehicle is detected, that is, when the vehicle speed exceeds 0 km/h, for example,
By shutting off the control valve 12 when the speed reaches Km/h, the connection port of the brake valve 10 to the air tank 3 is switched from the air tank 3 to open to the atmosphere.

In the brake for starting on a slope configured in this way, when stopping the automobile, the brake pedal 1 is depressed. Then, the brake valve 2 provided in the first air pipe 5 opens, and the air stored in the air tank 3 is supplied to the brake chamber 4 through the first air pipe 5, and the brake is activated. .

When starting the car after it has stopped in this way, if there is no possibility of the car going backwards, release the brake pedal 1 and then release the accelerator pedal 8.
All you have to do is step into it.

On the other hand, when starting on a slope where there is a possibility that the vehicle may roll backwards, by depressing the brake pedal 7 for starting on a slope, air is supplied to the brake chamber 4 through the second air pipe 11 to keep the brake activated. .

In this way, the accelerator pedal 8 is depressed while the brake pedal 7 for starting on a slope is depressed. Then, when the car starts moving by pressing the accelerator pedal 8, an activation signal is supplied from the vehicle speed sensor 13 to the control valve 12, so that the connection port of the brake valve 10 to the air tank is opened from the air tank 3 to the atmosphere. Can be switched.

Therefore, even if the brake pedal 7 for starting on a slope is depressed and held, the air in the brake chamber 4 is discharged from the second air pipe 11 in synchronization with the start of the vehicle, and the brake is automatically released. This results in a smooth start without any backtracking. Incidentally, after starting the car, the brake pedal 7 for starting on a slope is released, but while the car is running, the operating signal is continuously being supplied from the vehicle speed sensor 13 to the control valve 12, so the brake pedal 7 for starting on a slope is depressed. But the brakes don't work. For this reason, the brake pedal 7 for starting on a slope can also normally be used as a footrest for the left foot.

<Effects of the invention> As is clear from the above explanation, according to the invention, when starting on a slope, if the slope starting brake pedal is depressed and the starting operation is performed, the brakes are applied in synchronization with the car's start. Since it is automatically released, it is possible to start smoothly without backing up, even on steep slopes, without requiring special skill.

[Brief explanation of the drawing]

FIG. 1 is a brake system diagram showing an embodiment of the brake for starting on a slope according to the present invention, and FIG. 2 is a plan view showing an example of the arrangement of brake pedals for starting on a slope. 1...brake pedal, 2...brake valve, 3
...Air tank, 4...Brake chamber, 5...
...First air conduit, 6...Air compressor, 7
... Brake pedal for starting on a slope, 8 ... Accelerator pedal, 10 ... Brake valve, 11 ... Second air pipe, 12 ... Control valve, 13 ... Vehicle speed sensor.

Claims (1)

[Scope of utility model registration request] A first air line 5 leading from the air tank 3 to the brake chamber 4, a second air line 11 connected in parallel to the first air line 5, and a second air line 5 connected to the first air line 5. a brake pedal 1 for operating a brake valve 2 installed in the vehicle; a brake pedal 7 for starting on a slope for operating a brake valve 10 installed in the second air pipe 11; and a vehicle speed sensor 13 for detecting the vehicle speed of the vehicle. A brake for starting on a slope, comprising a control valve 12 that shuts off a second air pipe line 11 from the air tank 3 to the brake valve 10 when the start of the automobile is detected based on the output of the vehicle speed sensor 13.