GB2247727A - A remote controlled hydraulic brake lockup system for automobiles - Google Patents

Abstract

A remote-controlled hydraulic brake lockup system providing a security measure for automobiles comprises a valve 4 biassed to close a fluid passage 31-21 and thereby lock the brake in its actuated position and a piston 10 for opening the valve, the piston being displaceable by electrical coils 13a, 13b actuated by coded signals from a remote controller detected by an inductive receiver. The piston has a spring detent device 7, 25, 35. <IMAGE>

Description

8PECIFICATION A RENOTE-COWTROLLED HYDRAULIC BRAtS LOCKUP SYSTEN FOR AUTOMOBILES The present invention relates to an automobile theftproof system, more particularly, to a remote-controlled hydraulic brake lockup system for automobiles.

In the dynamic and prosperous community today, people enjoy their high standard of living. Automobiles become more and more popular but meanwhile the problem of automobile stealing is more and more serious than ever.

In addition, the means and skills of automobile stealing are frequently changing and improving, which arouse more attention to the design of theft-proof system.

The automobile theft-proof systems generally available in the market are simply some kinds of buzzers which lock up the car doors, steering wheels, or other car members by controlling the power switch or by using various elaborate locking devices, or using some alarm devices connected to the horns or lamps of the cars.

However, even with these theft-proof systems installed, cars will be moved and stolen by those tricky thieves.

All the theft-proof systems available seem useless and impractical.

In view of the increasingly serious problem of automobile stealing, the present inventor has tried to develop an ideal method to protect automobile from being stolen by locking up the brake oil passage instead of using any conventional theft-proof equipment which always uses a lock as a key means. After the continuous and thorough research and experiments, the present invention is designed by combining the techniques in mechanics, electronics, and electric engineering to remotely control the brake oil passage of an automobile.

When a driver parks his/her car and leaves he/she may use a remote controller to lock up the brake oil passage within an effective emission distance. Unless a correct decoding signal is input the brake oil passage is always in a lockup status. Even if a thief breaks into the car and turns on the engine a wire connected to the horn will make the horn wail; in case the thief quickly disconnects the alarm circuit and turns on the engine, the car will be hardly moved because its wheels are still braked.

It is therefore a primary object of the invention to provide a remote-controlled hydraulic brake lockup system with which a driver may remotely lock up a car's brake oil passage and thereby prevents a car from being stolen.

A secondary object of the invention is to provide a controlled dual-loop for controlling a car's brake oil passage, wherein each loop controls two wheels. If either loop is destructed or failed, the other one will still work.

A further object of the invention is to provide a remote-controlled hydraulic brake lockup system which allows the locked braking system to recover its ordinary status by remotely inputting a decoding signal.

The invention as well as its many advantages may be further understood with reference to the following detailed description and drawings in which: Figure 1 is a sectional top view of the invention illustrating a free brake oil passage; Figure 2 is a sectional side view of the invention illustrating free brake oil passage; Figure 3 is a sectional side view of the invention showing a lockup brake oil passage; Figures 4 and 5 show the control circuit of the invention; and Figure 6 is a perspective view of the invention.

Please refer to Figure 1. The invention of a remotecontrolled hydraulic brake lockup system 1 includes two sets of identical oil brake device arranged vertically adjacent to each other. Each set disposes with an oil outlet 21, a narrow neck 22, and a front shaft chamber 23 axially arranged from left to right, as well as a front shaft sleeve 20 of a first collar 24 formed at an end opposite to the front shaft chamber 23; and a rear shaft sleeve 30 having a rear shaft chamber 33, a narrow oil entrance 32, and an oil inlet 31 axially arranged from left to right, as well as a second collar 34 formed at an end opposite to the rear shaft chamber 33. The front shaft sleeve 20 and the rear shaft sleeve 30 are firmly joined by screwing the first collar 24 and the second collar 34 together with a plurality of screw 2.The front shaft chamber 23 and the rear shaft chamber 33 have identical inner diameter. A cylindrical piston 10 having a top pin 11 provided at its front end is disposed in the front shaft chamber 23 and the rear shaft chamber 33 before the front shaft sleeve 20 and the rear shaft sleeve 30 are screwed together. The cylindrical piston 10 has a diameter just permitting it to slide forward and backward in the front shaft chamber 23 and the rear shaft chamber 33. A left groove 12 and a right groove 13 are formed at two sides of the cylindrical piston 10, respectively, permitting brake oil to pass through. The top pin 11 may move in the narrow neck 22 and extend into the front shaft sleeve 20 following the sliding movement of the cylindrical piston 10. The top pin 11 and the cylindrical piston are integrally associated.

For the purpose to permit the cylindrical piston 10 to be forward or backward shiftable, coils 13a and 13b are respectively wound on coil holders 12a and 12b which are put onto the outside of the front shaft sleeve 20 and the rear shaft sleeve 30, respectively, with their wires separately connected to an induction type receiver 40.

Moreover, for the purpose to enable a tight joint of the front shaft sleeve 20 and the rear shaft sleeve 30, an annular groove 241 is formed on the connecting surface of the first collar 24 of the front shaft sleeve 20, and an O-ring may be disposed therein so that brake oil used by the system 1 may be prevented from leaking by a compressive force applied to the O-ring 3 when the second collar 34 of the rear shaft sleeve 30 is tightly screwed to the first collar 24 of the front shaft sleeve 20.

In the oil outlet 21 of the front shaft sleeve 20, an oil tube connector 6 is screwed so as to hold a first spring 5 which further pushes a first steel ball 4 to dispose in the oil outlet 21 between the first spring 5 and the top pin 11. With the strong elastic force of the first spring 5, the first steel ball 4 may be tightly pushed against the front end of the narrow neck 22 and stop brake oil from flowing through.

Please refer to Figure 2. When the system 1 is in a state of free brake oil passage, the top pin 11 of the cylindrical piston 10 inserts into the narrow neck 22 and pushes away the first steel ball 4 which is originally pressed against the front end of the narrow neck 22 by the first spring 5. At this point, two second steel balls 7 and 7' disposed in the cylindrical piston 10 are pushed by the outward elastic force of a second spring 8 which is disposed between them to tightly engage with two front semi-spherical recesses 25 and 25' formed on the inner wall of the front shaft chamber 23.At the time the oil passage is in an ordinary free status, and, when a brake pedal is stepped down, brake oil is squeezed into the brake oil inlet 31, flows through the narrow oil entrance 32, the rear shaft chamber 33, the left and the right grooves 12 and 13 on the cylindrical piston 10, the narrow neck 22, and the oil outlet 21, and finally is pressed into the wheels and generates a braking function.

When the brake pedal is released, brake oil may flow back in a reverse direction.

After a driver has parked and left his/her car, he/she may use a remote controller to emit a signal which is received by a receiving circuit 41 (as shown in Figures 4 and 5) in the induction type receiver 40, and is amplified by an amplifying circuit 42, then is further converted into the digital signals of zero and one by an analog-to-digital converter 43. The converted digital signals are transmitted to a decoder 44 for decoding. If the signals are correct, the decoder 44 will input a control signal to the AND gate 45 or 46 which will enable the relays 47, 47', 48, 48' controlled by the AND gate 45 or 46 to control power and to make coil 13a or 13b closed circuit.When the coil 13b is closed-circuit and an attractive force is induced to attract the cylindrical piston 10 to move backward as shown in Figure 3, and consequently move the top pin 11 out the narrow neck 22.

The first steel ball 4 is pushed against the front end of the narrow neck 22 by the force from the first spring 5, and consequently the oil passage. When the cylindrical piston 10 is attracted backward, the two second steel balls 7 and 7' disposed in the same tightly engage with two rear semi-spherical recesses 35, 35' formed on inner wall or the rear shaft chamber 33 under the force from the second spring 8. When the oil passage is locked up, and if the main power of the car is on, the horn will burst to wail; even if a thief quickly finds and disconnects the horn circuit without alarming others, the engine will be finally turned off because the wheels are still braked.

Before the driver starts the car, he/her only needs to input by the remote controller a decoding signal to make the coil 13a closed-circuit so that the cylindrical piston 10 will be attracted to move forward and a free brake oil passage is formed as shown Figure 2, the braking system is released to permit the car to recover its ordinary function.

For the purpose to facilitate the replacement of brake oil, oil drain holes 201 and 301 are respectively provided on top of the oil outlet 21 and the narrow oil entrance 32 and may be tightly closed by screwing in securing screws 202 and 302, respectively.

The present invention is designed with an approach of separable dual braking system to cope with the dual-loop braking system of the automobile nowadays. As illustrated in Figure 6, the present invention comprises two identical sets of remote-controlled hydraulic brake lockup system 1 which are horizontally associated and accommodated in a housing 100. The purpose of the invention is to provide a spare for the separable dual-loop braking system which requires each loop to control at least one pair of wheels in case of either one of the system failing to work accidentally. The conventional system is generally designed as a separable diagonal type in which the front right wheel and the rear left wheel are associated as a set, similar to the other wheels.A set formed with the front right wheel and the rear right one, or formed with the front left one and the rear left one is another kind of design. The present invention is connected with the braking loop with which the system should be compatible.

The invention is mounted to the chassis of a car with two angle plates 51, 52 disposed thereof. An inductive receiver 40 is installed between the two angle plates 51 and 52 to prevent receiver 40 from being found and destructed. The circuit wiring of the invention is mounted in the receiver 40 which is connected with the power supply of the car thereby providing the system with power. Due to the feature of embedding the circuit wiring of the invention with that of the car at the chassis, the system is protected from being damaged by accident.

The present invention is protected by the housing 100 and mounted at the chassis. When a car stops the oil brake is locked by the electromagnetic valve controlled by the circuit of the car. Turn on the car and the oil passage is released. The electromagnetic valve is controlled by an electromagnetic force induced when current flows through the coil. Therefore when the car runs out of power, or the circuit fails to function, the electromagnetic valve does not work and hence the oil passage will not be locked.

The operation of the system will not affect the normal function of braking, as clearly described hereinbefore. Locking of the oil passage will not exert pressure to the oil but just stop the inlet and outlet of the braking loop and the car is settled in a state of braking as well as theft-proof.

As indicated, the structure herein may be variously embodied. Recognising various modifications will be apparent, the scope hereof shall be deemed to be defined by the claims as set forth below.

Claims (4)

CLAIM8

1. A remote-controlled hydraulic brake lockup system for automobiles having two sets of hydraulic brake system with each of which comprising: a front shaft sleeve having an oil outlet at one end and a front shaft chamber at the other end with a narrow neck disposed between said oil outlet and said front shaft chamber to connect them: said oil outlet having an oil tube screwed therein to stop and press a first spring and a first steel ball; on top of said oil outlet, a front oil drain hole being provided and being able to be sealed with a securing screw; said front shaft chamber having a first collar formed at its open end, around said collar a plurality of threaded holes being formed; an annular groove formed near the base portion of said first collar; and two front semispherical recesses oppositely formed on its inner wall at a position inside said first collar; a rear shaft sleeve having an oil inlet at one end and a rear shaft chamber at the other end with a narrow oil entrance disposed between said soil inlet and said rear shaft chamber to connect them; said narrow oil entrance having rear oil drain hole provided on its top which may be sealed with a screw; said rear shaft chamber having a second collar formed at its open end which may be connected to said first collar on said front shaft chamber by threading a plurality of screws through said threaded holes around said first collar; and two rear semi-spherical recesses oppositely formed on its inner wall at a position inside said second collar; a cylindrical piston contained in the room formed by said front shaft chamber and said rear shaft chamber when they being connected together, and having a top pin provided at its one end and being movable in and out said narrow neck of said front shaft sleeve; two side passages separately formed at its left side and its right side for brake oil to flow through; and a through hole formed near its middle for containing two second steel balls and second spring; with the elastic force from said second spring; said two second steel balls being able to engage tightly with said two front semi-spherical recesses of said two rear semi-spherical recesses; an 0being received in said annular groove formed on said first collar of said front shaft chamber to facilitate an absolutely sealed screwed connection of said front shaft sleeve and said rear shaft sleeve; two coil wirings separately around said front shaft sleeve and said rear shaft sleeve behind said first collar and said second collar respectively; and an induction type receiver for determining a correct input signal received and deciding the right coil wiring through which the current flows.

2. A remote-controlled hydraulic brake lockup system for automobiles as claimed in claim 1 wherein said front shaft chamber and said rear shaft chamber have identical inner diameter and can fitly accommodate said cylindrical piston for the same to move therein.

3. A remote-controlled hydraulic brake lockup system for automobiles as claimed in Claim 1 wherein oil drain holes are separately provided on top of said oil outlet and said narrow oil entrance, and each can be completely closed by a securing screw threaded therein; change of brake oil may be conveniently proceeded by releasing said securing screws.

4. A remote-controlled hydraulic brake lockup system for automobiles as hereinbefore described with reference to and as shown in the accompanying drawings.