CLUTCH BRAKE METHOD

Abstract: The clutch brake method relates to vehicle brake systems. A clutch brake method consists mainly of a mechanism and device in a small unit (Fig. 1-7) which causes braking pressure from the master cylinder to wheels to be diverted to the clutch pedal and enable the clutch pedal to takeover the duty of a brake pedal. The mechanism includes totally the braking pressure pipe from the master cylinder connected to the machine unit as an inlet (26) and an outlet pipe (29) to wheels through hydromaster, and a piston (2) which has loaded a disk type valve (11) which transfers braking pressure for vehicle operation by engaging or disengaging the clutch with the clutch pedal bar connected to the piston of the machine unit by either rod bar or wire. Thus, the device enhances the safety of clutch equipped vehicles and drivers by allowing more frustation free and accident free driving.

Description: Title of Invention: "CLUTCH BRAKE METHOD" TECHNICAL FIELD This invention relates to the brake systems of vehicles. BACKGROUND OF ART There has been no device yet invented to keep a vehicle in a safely braked position through automatic linkage within a driving mechanism from the time when the vehicle is stopped until it is restarted (forward • or backward) by a device between the brake pedal and clutch pedal. For example, a vehicle equipped with a clutch device will be totally out-of-braking position during the time the driver moves his right foot from the brake pedal to the accelerator pedal releasing simultaneously the clutch pedal. DISCLOSURE OF INVENTION Of course, a hand brake can keep the vehicle in a braked position at that moment, but a hand brake often does not work satisfactorily on a slope. The use of the hand brake at such time is less, efficient and inconvenient. The absense of a reliable, safe device can cause incidents at present as follows; (1) The vehicle can move backward or stop working on an upward slope, which may cause traffic accidents. (2) In case a vehicle is hit by a following vehicle when it is about to restart after stopping on a level or a downward slope, it may rush forward and hit other vehicles or pedestrians because the driver removes his foot from the brake pedal while his left foot is ' not released from clutch pedal and the vehicle is released from the brake system. This may cause a major traffic accident. The object of this invention, therefore, is to secure safe operation of vehicles, to make the vehicles easier to control and therefore make drivers feel free from mental stress and accidents. When a vehicle is brought to a stop by pressing the brake pedal, the brake pressure is automatically and simultaneously transmitted to the clutch system by pressing the clutch pedal. The braking pressure which has been transmitted to the clutch pedal is reduced slowly as the clutch pedal is released and the accelerator pedal is pushed down when the car is restarted. The car will then move forward without any risk of backward movement. Since the clutch pedal immediately takes over the role of the brake pedal in the above described action, the vehicle will be kept in a completely braked situation even if the brake pedal is released, until the vehicle starts to move forward from a stopped situation. Pushing down and releasing the clutch pedal for speed change while the vehicle is running does not act on the brake system. Pushing down the brake pedal to reduce speed while the vehicle is moving does not act on the clutch system. Only when the action of pushing down the brake pedal for speed reduction or for stopping is done together with the action of pushing down the clutch pedal, regardless of the order of or time interval between the two actions, pressure of the same amount as applied to the brakes by the pedal is automatically transmitted to the clutch pedal. Therefore, even if the driver releases the brake pedal before he releases the clutch pedal, the pressure of the same amount as applied to the brake pedal still acts on the clutch pedal until release of the clutch pedal. As described in the "Disclosure of Invention", this invention is aimed to keep a vehicle from being out of the driver's control at any moment while it is being driven. This invention will give the following benefits both to vehicle and to the drivers; Completely prevent an automobile from moving unintentionally backward at the moment that the driver attempts to start on a upward slope; it also will allow the driver to proceed smoothly. Especially under rainy, snowy or icy road conditions, this ability to prevent unintentional backward movement will greatly contribute to safe vehicle operation free from damage by accident. The automatic system of this invention described above will assure easier and safer driving conditions especially for unskilled drivers. These benefits will be greater for vehicles carrying heavy cargo. BRIEF DESCRIPTION OF DRAWING 1 - Symbol Description Fig. 1 is a plan view of the device. Fig. 2 is a side elevation of the device. Fig. 3 is a front and rear elevation of the device. Fig. -4 shows brake operation while clutch is not operating. Fig. 5 shows brake operation while clutch is being disengaged. Fig. 6 shows brake operation when clutch is in fully disengaged position and, Fig. 7 shows cross sectional views of major parts of the device. BEST MODE FOR EXECUTION OF THE INVENTION The execution of this invention is as follows; (1) The drawings attached herewith are prepared only for the description of this device. Therefore, the dimensions of this device may be reductively adjusted depending on the size of braking pressure pipe of the vehicle. (2) This device can be applied both to hydraulic braking systems or to pneumatic braking systems. (3) The device can be applied independently either to the front wheel braking system or to the rearwheel braking system. Therefore, this device makes it possible to brake both the frontwheels and rearwheels even when it is attached to a vehicle which does not have separate braking systems. (4) The device described in the abov (3) is to be installed in parallel but this device can also be installed in series. (5) The device is to be installed next to the master cylinder. (6) Fig. 4 shows brake operation while the clutch pedal is released, where the pressure from the master cylinder enters into 26 , passes along the path indicated with (—- >) and goes out through 29 , and then acts directly or through a hydro-master on the frontwheels and rearwheels. Fig. 5 shows brake pressing being carried out while the clutch is being disengaged (clutch pedal is being pushed down) . The brake pressure enters into 26 , passes 3 , 18 and 29 , and then acts directily or through a hydro¬ master on the frontwheels and rearwheels.. Fig. 6 shows the braking pressure applied to the brake pedal being relayed by 11 and 16 which are engaged tightly to each other immediately as the brake pedal is released while the clutch is in completely disengaged position (clutch pedal is being pushed down) . Through this movement, the clutch pedal completely takes over the braking pressure from the brake pedal and the car is kept in completely braked situation until the clutch pedal is released and the car starts forewards . (7) In Fig. 1, 40 ' which is supported by two 8s is connected to the clutch pedal bar. 40 can be connected to the clutch pedal bar with wire or rod bar. Although the clutch pedal load required to operate this device is minor, this load can further be minimized through the mechanism which connects 40 to the clutch pedal bar. INDUSTRIAL APPLICABILITY (1) This mechanism completely excludes any electric device using electric power. (2) This mechanism may be produced by the precision machinery industry. (3) This mechanism also can be installed in existing vehicles.

Claims: CLAIMS : 1. The brake pressure generated from the master cylinder by pressing the brake pedal is transmitted to frontwheels and rearwheels of vehicle through the mechanism and device of the CLUTCH BRAKE METHOD and changes the situation such that the same amount of braking pressure is obtained by pressing the clutch pedal until the clutch pedal is released while the brake pedal is released. 2. By pressing the brake pedal and clutch pedal, regardless of the order of or time interval between two actions, the braking pressure of the same amount as applied to the brake pedal is automatically transmitted to the clutch mechanism. Therefore, even if the driver releases the brake pedal before he releases the clutch pedal, the braking pressure of the same amount as he applied to the brake pedal still- acts on the clutch mechanism until he releases the clutch pedal. 3. This device can be applied both to hydraulic braking systems or to pneumatic braking systems. 4. The device can be applied independently either to the frontwheel braking system or to the rearwheel braking system. Therefore, this device makes it possible to brake both the frontwheels and rearwheels at the same time even when it is -attached to a vehicle which does not have separate braking systems. 5. The device described in the above 4. is to be made and installed * parallel but this device can also be made and installed in series. 6. The device is to be installed next to the master cylinder. SYMBOL DESCRIPTION 1 Body of the Device 24: Pressure Pipe Receiver 2 Piston 25: Pressure Pipe Nipple 3 Pressure Inlet 26: Pressure Pipe 4 Piston Ring 27: Tight Nut of Pressure 5 Pressing Bar Pipe 6 Gasket 28: Pressure Pipe Nipple 7 Press Back Spring 29: Pressure Pipe 8 Connecting Part 30: Tight Nut of Pressure ' between Pistons and Pipe Clutch Pedal Bar 31: Pressure Pipe Receiver 9 Spring Supporter 32: Clearance between 10 Connecting Pin Hole Cylinder and Piston 11 Disk Type Valve 33: Space for Pressure Flow 12. Guide Key of Disk in Valve 34: Screw Driven Part of 13 Space for Pressure Stopper Inlet 35: Lock Screw of Stopper 14 Cross Bar Stopper 36: Close up Tight Plate 15 Disk Valve Stopper for Piston Bar 16 Close up Seal for 37: Pin Bolt for 2.-Piston Disk Valve Both Operating 17 Guide Bar of Disk 38: Lock Pin Hole Valve Operation 39: Nut for Pin Bolt 18: Pressure Inlet Space 40: Connecting Part to 19 Rock Nut of Pressing Clutch Pedal Bar 41: Rear Fixing Part 20 Gasket 42: Front Fixing Part 21 Rear Tight Cover 43: Fixing Bolt/Nut 22 Screw Bolt to Tight 44: Fixing Part with Frame 21 of Automobile 23 Lock Bolt for Close iip Plate

Inventors: KIM YEON KEUN, KIM, YEON, KEUN
Applicants: KIM YEON KEUN, KIM, YEON, KEUN
Application year: 1985
Main classification: B60K41
IPC codes: B60T7, B60T11, B60W10