CN2043943U - Anticollision safety device for automotive vehicle - Google Patents

Abstract

The utility model relates to an improved anticollision safety device for automotive vehicle in which a gas and liquor linkage cylinder provides a collision protection for vehicles. The buffer length can reach 100 millimeter, and the protection can be provided for the side face or the collision at a certain angle. In addition, the utility model gives full play to the respective specialty of the gas, the liquid, the electricity to make the whole safety device compacted, small, light, and assembled and maintained conveniently.

Description

Anticollision safety device for automotive vehicle

A kind ofly be used for the safety device that power actuated vehicle can be protected vehicle and driver when meeting accident collision case, belong to the vehicle braking control technical field.

The protection problem of power actuated vehicle in collision case is the problem that people make earnest efforts studying always.The patent application technology one that Beijing obtained a silver medal in the international show of inventions in 1988 " Vehicular impact relieving apparatus " (number of patent application is 87214429), proposed to utilize a cushion cylinder shock damping action to go to alleviate the design concept of bump kinetic energy, its fundamental point is, fix two cushion cylinders in the bumper/spoiler back of power actuated vehicle, when bumping, utilize the huge kinetic energy when going to alleviate collision in the slow earial drainage process of high pressure oil.This device makes the collision between rigid body be converted into a slightly elastomeric elastomeric collision, has alleviated the infringement that collision brings, the solution simple in structure of can yet be regarded as.But because insurance cylinder and buffering oil cylinder are directed fixing in this device, have only bigger front to bump against, relieving apparatus is worked, and be with in the actual accidents collision of certain angle will be more generally many, this has just hindered the realization of its goal of the invention; In addition, this device utilizes spring that oil cylinder is resetted, and this just requires the drift of spring must be greater than 100 millimeters, just can obtain 50 millimeters buffer distance, expect longer buffer distance, the drift of spring also must extend, but this is subjected to the restriction of this body structure of vehicle again; Simultaneously, the motion of two cushion cylinders also is difficult to carry out synchronously.Therefore, in implementing its invention, remain in certain difficulty.

In order to overcome the shortcoming that exists in the above-mentioned technology, the inventor is once at " power actuated vehicle anticollision safety device " (number of patent application: in the patent application case 88201027.0), proposition utilizes a gas-liquid linked cylinder that is fixed together with vehicle bumper to provide the buffering energy to being subjected to collide, and is relieved to bottom line so as to making the infringement in the vehicle collision accident.Wherein, what control gas-liquid linked cylinder action is a series of operated pneumatic valve; what control vehicle power-transfer clutch and braking mechanism moved is gas-liquid linked cylinder; like this; bumped against brake from vehicle; will be through level Four control; promptly just can be finished through hitting search switch → relaying conversion valve → gas-liquid linked cylinder → a series of actions of level Four such as control cylinder action → vehicle brake; because finishing each grade control all can produce certain time lag, its accumulation time lag is big more also just to be unfavorable for protecting vehicle more.

The purpose of this utility model provides a kind of less vehicle anticollision safety system of progression of controlling; the speciality separately of its energy comprehensive application gas, liquid, electricity; the control progression in the simplification anticollision safety device and the quantity and the structure of each parts, thereby cost-cutting improve the protection effect.

The purpose of this utility model is achieved in that the electric switch detecting collision accident of utilizing, and by conversion valve of its control, makes two control cylinder actions.Thereby make vehicle gas-liquid interlock cylinder, power-transfer clutch and braking mechanism enter guard mode.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the utility model structural representation;

Fig. 2 is parallel four connecting rods and gas-liquid interlock cylinder structure scheme drawing;

Fig. 3 is a birds-eye view;

Fig. 4 is the control cylinder scheme of installation;

Fig. 5 is a control cylinder A-A section-drawing;

Fig. 6 is an electric control schematic diagram.

The utility model is cushioned four parts such as execution and control that reset, brake and is constituted by impact detection.The structure of each several part and principle of work are:

One, impact detection part

It has comprised the parallel four-bar linkage 1 and 2 that holds the spy effect, and they are installed in the place ahead of bumper/spoiler 18, and 1 is opposite with 2 installation direction.Each parallel four-bar linkage is feeler lever 23, isometric connecting rod 26,27 and bumper/spoiler 18 compositions of curved arc shape by an end.Contact between them is active connection, constitutes a parallelogram.Retracing spring 24 links to each other with connecting rod 27, and its effect is that parallel four-bar linkage is resetted.25 is postioning abutment.When being hit, the parallel four-bar linkage deformation in compression.

The utility model utilizes switch 6,7 to provide collision alarm, and these two switches are fixed on the bumper/spoiler 18, and lays respectively at the rear of parallel four-bar linkage 1,2.Two the wiring end points of switch and the self-holding contact of valve 9 all connect together, by the magnet coil ZC of their by-pass valve controls 9.When the parallel four-bar linkage deformation in compression, switch 6 or 7 is connected, valve 9 actions.

Two, cushion and the part that resets

This part is finished and makes bumper/spoiler retraction or homing action, the buffering energy is provided and provides control signal to the cylinder 12,15 of controlling brake.It comprises gas-liquid linked cylinder, fuel tank 17, check valve 14 and the valve 13 that overflows, and gas-liquid linked cylinder is divided into air cylinder 3,5, liquid cylinder 4, and that narrates in connecting relation therebetween and No. 88221027.0 patent applications is identical.

In the utility model, what control cylinder moved is valve 9, and this is a two-position four-way solenoid valve.The right chamber of air cylinder 3,5 connects the A hole of valve 9 by tracheae 20, and the P hole of valve 9 connects source of the gas 11.Vehicle just often, the pressurized air of source of the gas 11 makes the piston of air cylinder 3,5 to the left movement and the position that reaches capacity.Because air cylinder and liquid cylinder all are fixed on the bumper/spoiler 18, when the piston of air cylinder 3,5 moved to left, liquid cylinder 4 also moved to left thereupon, and the right chamber of its piston forms vacuum, oil is sucked through check valve 14 from fuel tank 17, for crashproof buffering is got ready.

After the coil ZC of valve 9 was hit the energising action, pressurized air was forced out from the right chamber of air cylinder, leads to atmosphere through B, O hole.Simultaneously, the pressurized air of source of the gas 11 is gone the action of control brake operating part through tracheae 21.In addition, when air cylinder is hit when moving to right, the piston of liquid cylinder 4 also moves to right thereupon, oppress in-oil cylinder oil and oil pressure is raise, when pressure continues to increase, when surpassing by pass valve 13 settling pressure values, oil will be leaked in the fuel tank 17, piston reaches the bumper/spoiler 18 that fixes with piston also can be continued to move to right.By this process, liquid cylinder just provides crashproof needed buffering energy and buffer distance.

Three, brake operating part

This part comprises the cylinder 12 of control clutch break-make and the cylinder 15 of control braking mechanism.The epicoele of cylinder 12,15 connects valve 9 by tracheae 21, and cavity of resorption connects valve 9 by tracheae 20.The piston rod of cylinder 12 utilizes members such as steel rope or other similar connecting rods 19 and vehicular clutch to link together; when piston rod moves down; power-transfer clutch can be continued open; vehicle enters controlled guard mode; and when it is in upper position; steel rope unclamps, and original controllable function is not impacted.In like manner, cylinder 15 also links together by the braking mechanism of steel rope 22 grades and vehicle, and its control process is identical with power-transfer clutch.

Four, control part

This part is coordinated the The whole control safety device and carries out work, to finish Anti-bumping protection and homing action.It comprises switch 30 and valve 9, and switch 30 is moving disconnected buttons, and it is serially connected in the control loop of valve 9 coil ZC.When switch 6 or 7 was hit connection, ZC got electric, and device enters guard mode; PS (Push Switch) 30, the ZC dead electricity, valve 9 restores to the original state.At this moment, pressurized air enters the cavity of resorption of cylinder 12,15 from source of the gas 11 through valve PA hole, move on the piston, the steel rope 19,22 of control clutch and braking mechanism unclamps, meanwhile, the piston of cylinder 3,5 moves to left to end position, and it drives bumper/spoiler 18 grades and resets.Vehicle can travel by normal driving.

For surge time and the energy of regulating liquid cylinder 4, between fuel tank 17 and by pass valve 13, insert a governor valve 16.

The structure of air cylinder 3,5,12,15 is a coventional type, the also optional common plunger pump of the optional coventional type of the structure of liquid cylinder 4.Air cylinder 3,5 is fixed on the vehicle crossbeam 26 by clamp 29. Air cylinder 12,15 also is fixed on the correct position of crossbeam 26.

The utility model can make vehicle when meeting accident collision, provides reliably protecting to vehicle and driver. Its buffer length can reach more than 100 millimeters, and crusherbull zone is effective, also can provide protection to the collision accident of side or certain angle. Use a cushion cylinder, do not have the nonsynchronous problem of oil cylinder. In addition, the utility model is simple in structure, and it gives full play to gas, liquid, electricity speciality separately, makes whole safety device compactness, small and exquisite, and installation and maintenance are all very convenient.

Claims (2)

1, a kind of improved power actuated vehicle anticollision safety device, it is made of impact detection, buffering reset, brake execution and four parts such as control, and wherein, impact detection has partly comprised the parallel four-bar linkage 1 and 2 that holds the spy effect, they are installed in the place ahead of bumper/spoiler 18,1 is opposite with 2 installation direction, buffering reset portion branch comprise gas-liquid linked cylinder (be air cylinder 3,5, liquid cylinder 4, fuel tank 17, check valve 14 and by pass valve 13, three pistons of gas-liquid linked cylinder all are fixed on the rear of bumper/spoiler 18

It is characterized in that:

A, impact detection part

The switch 6,7 that picks collision alarm is individually fixed in the rear of parallel four-bar linkage 1,2, and two end points of switch and the self-holding contact of valve 9 all connect together, by they control coil ZC, when the parallel four-bar linkage deformation in compression, switch 6 and 7 is connected, valve 9 actions

B, cushion and the part that resets

The promotion of air cylinder 3,5 pneumaticallies resets, and the right chamber of their cylinder connects the A hole of valve 9 by tracheae 20, and the P hole of valve 9 connects source of the gas 11,

C, brake operating part

It comprises the cylinder 12 of control clutch break-make and the cylinder 15 of control braking mechanism, the cavity of resorption trachea 20 of cylinder 12,15, and epicoele connects valve 9 by tracheae 21,

D, control part

This part comprises control the bumper/spoiler shift knob 30 and the valve 9 that reset, shift knob TA-termination power+, switch 6,7 and ZC open contact after the parallel connection of other end serial connection, the latter is joined the other end power connection of ZC with the control coil ZC of valve 9 again.

2, power actuated vehicle anticollision safety device according to claim 1 is characterized in that inserting between fuel tank 17 and the by pass valve 13 governor valve 16.

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