CN2252141Y

CN2252141Y - Vehicle anti-theft device

Info

Publication number: CN2252141Y
Application number: CN96201389U
Authority: CN
Inventors: 李福山
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-02-12
Filing date: 1996-02-12
Publication date: 1997-04-16
Anticipated expiration: 2006-02-12

Abstract

The utility model discloses a theft preventing device for automobiles, which has the advantage of good effect of theft prevention. The theft preventing device for automobiles comprises a theft preventing switch 7, an electromagnetic valve 6, a shifting fork 5, a second stage tappet 4, a special-shaped screw 8 and a theft preventing switch 7. The theft preventing device for automobiles is characterized in that the shifting fork 5 is swung by a shaft 13, and one end is provided with the second stage tappet 4 which moves forwards and backwards along with the swing of the shifting fork. The second stage tappet 4 is positioned between a first stage tappet 2 of an original brake system and a column of a column plunger of a braking pump 9, while the other end is controlled by the electromagnetic valve 6. A tension spring 14 and the theft preventing switch 7 are arranged at the same end. A DC boosted circuit or a frequency changing circuit is arranged in a key body. The theft preventing device for automobiles has the advantages of novel principle of theft prevention, reasonable structure, low manufacturing cost and good effect of theft prevention.

Description

More anti-theft devices in vehicles

The utility model belongs to a kind of more anti-theft devices in vehicles, mainly reaches thief-proof purpose by abrupt deceleration vehicle.

At present, along with popularizing of domestic and international automobile, become walking-replacing tool necessary among the human lives, but losing of automobile becomes great society public hazards, and motor plant and user thereof adopt various means to prevent that vehicle is stolen, and its method is divided into two classes substantially: a kind of is to report to the police, when occurring stealing feelings, with sound, light, the electromagnetic signal mode is sent warning, but this form can not prevent the continuation of auto theft behavior, it is very difficult again to look for stolen vehicle, even find, vehicle also will be damaged in various degree; Another kind is by not making the burglar into the car, make its can not the mode of starting vehicle and making vehicle lose normal manipulation realize thief-proof.As Reinforced door lock, with the fixing control wheel of a device, make control wheel malfunctioning, on ignition lock, install password etc. additional.Its methods are multiple, but its deficiency is that vehicle is in burglar's crime.Car body must suffer damage, because malfunctioning, though the normal maneuver vehicle of burglar, damaged vehicle is inevitable serious behind the vehicle launch, though the anti-theft success, the vehicle after the infringement even arrive can not usage degree.

The utility model purpose is to disclose a kind of automobile brake anti-theft arrangement, has the good advantage of burglar-proof result, even enter operator's compartment with engine starting: but because brake system is not removed braking state, still can not drive away vehicle or drag away, push away away.

Below with reference to embodiment description of drawings ins and outs:

Figure one is the utility model structural representation;

Groundwork of the present utility model is between tappet that links to each other with brake pedal and brake pump plunger, not easily detachable excessive mechanism is installed, anti-theft arrangement promptly of the present utility model.This mechanism makes former brake pump be in braking state all the time by solenoid control, and the releasing of this braking state can only be by the anti-theft switch of a band password.High-tension current or alternating current that this anti-theft switch does not provide its work to use to electromagnetic valve.

The utility model comprises thief-proof switch 7, electromagnetic valve 6, shift fork 5, secondary tappet 4 and a special-shaped screw 8.Shift fork 5 is with axle 13 swing, an end have one with its swing the moving secondary tappet 4 of front and back string, secondary tappet 4 is between the plunger post of the one-level tappet 2 of former brake system and brake pump 9.And the other end is subjected to electromagnetic valve 6 controls, at its same end extension spring 14 is housed, and wherein secondary tappet 4, extension spring 14, shift fork 5, axle 13 all are contained in the body 3, are fixed between car body and the brake pump 9 by special-shaped screw 8.Thief-proof switch 7 is equipped with a DC voltage booster circuit or frequency changer circuit in its key body.The electric contact by having multiple permutation and combination form and the input of switch, mouth is connected: to working current that makes its action of electromagnetic valve 6 outputs.

The utility model inserts the key that has circuit in anti-theft switch, pass to working current to electromagnetic valve 6, the valve rod withdrawal, and shift fork 5 is in free state.When the antitheft device off working state; Through one-level tappet 2, secondary tappet 4 promotes the plunger 12 of brake pump 9 by pedal 1, and brake solution enters brake disc from oil pipe line 10 in the pump housing, makes vehicle be in braking state, lifts pedal 1, and plunger 12 resets, and removes brake.Lubricating cup 11 is for hydraulic tubing provides brake solution.When needs make vehicle be in thief-proof state, transfer to anti-theft switch 7, electromagnetic valve 6 come out of action electric currents.

Its valve rod stretches out: top shift fork 5; Secondary tappet 4 pump 9 of will cutting off is in normal danger, and each wheel is in the locking state.

Any burglar, even start the engine still can't be removed brake, vehicle can't be stolen, even the burglar understands this thief-proof principle, because of the utility model is to be fixed under the chassis with special-shaped non-standard fastener, think that folding falls this antitheft device and finds special tool at short notice, get into car body, can't realize in the short time.

This electromagnetic valve adopts working alternating current or HVDC work, and after the key of anti-theft switch broke away from lock body, the burglar can't find the suitable current of the magnet valve work of can powering in the car, thus the burglar to finish auto theft at short notice will be very difficult.

The thief-proof principle novelty of the utility model, rational in infrastructure, cost of manufacture is low, and burglar-proof result is good, and it is easy to install this device in vehicle additional, and it is perfect that it instead steals measure, for user vehicle provides a kind of desirable thief-proof jinx.

Claims

1. more anti-theft devices in vehicles, comprise a thief-proof switch (7), electromagnetic valve (6), shift fork (5), secondary tappet (4), and special-shaped screw (8), thief-proof switch (7), it is characterized in that: shift fork (5) is swung with axle (13), one end has a secondary tappet (4) that the front and back string moves with its swing, secondary tappet (4) is between the plunger post of the one-level tappet (2) of former brake system and brake pump (9), and the other end is subjected to electromagnetic valve (6) control, at its same end extension spring (14) is housed, secondary tappet (4) wherein, extension spring (14), shift fork (5), axle (13) all is contained in the body (3), be fixed between car body and the brake pump (9) by special-shaped screw (8), thief-proof switch (7) is equipped with a DC voltage booster circuit or frequency changer circuit in its key body, the electric contact by having multiple permutation and combination form and the input of switch, mouth is connected, to working current that makes its action of electromagnetic valve (6) output.