CN2056651U

CN2056651U - Safety device for controlling fuel pedal of motor vehicle

Info

Publication number: CN2056651U
Application number: CN 89214132
Authority: CN
Inventors: 刘建明
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-07-15
Filing date: 1989-07-15
Publication date: 1990-05-02

Abstract

The utility model relates to a safety device for controlling the fuel pedal of a motor vehicle, comprising a combined pedal 10 which is arranged on the upper surface of a valve body, a plunger pump 15, a switch valve 23, an energy accumulator 29, a piston type shutoff valve 37, a one way valve 47 and a throttling valve 55. The plunger pump 15 is arranged in the left and the right side holes of the centerline of the valve body 38, and the extending ends of the pump rod 11 and the valve rod 20 of the plunger pump respectively contact the bottoms of the front and the back pedals. The energy accumulator 29 is arranged in the hole of the valve body of the right side of the switch valve 23 and is communicated with the cavity of the switch valve through an oil path, and the piston type shutoff valve 37 is arranged in the hole of the back side surface of the valve body. The one way valve 47 is arranged on the energy accumulator and the oil path between the piston type shutoff valve and the plunger pump, and the throttling valve 55 is arranged between the plunger pump and the piston type shutoff valve. The utility model can avoid the traffic accident caused because of the driver's misoperation and be installed and used not needing change the structure of the existing motor vehicle.

Description

Safety device for controlling fuel pedal of motor vehicle

The utility model relates to a kind of controlling machine motor vehicle safety device of accelerator pedal.When particularly Das Gaspedal is brake pedal by maloperation, make the safety device of the unlikely increase of fuel feeding.

As everyone knows, be provided with three pedals in bearing circle bottom, existing vehicle driving chamber: Das Gaspedal, brake pedal and pedal of clutch.From the traffic accident that the analytical engine motor vehicle has taken place, occupy certain proportion and be chaufeur in case of emergency, when spirit is overstretched, because brake pedal and Das Gaspedal are adjoined, all concentrate on the right crus of diaphragm and finish to refuel and brake two independent operations, Das Gaspedal is depressed as brake pedal sometimes by mistake, its action is big, strength is violent, and stepping on and just do not putting, its consequence makes the power actuated vehicle that should brake originally but continue big fuel feeding, and is high-power, high-speed to preshoot, so that causes great traffic accident.Causing this class traffic accident one is to reflect the chaufeur lack of skill, or long-distance driving is in fatigue state, or sick temporarily, or special roadblock, or factor such as driving a car under the influence of alcohol causes; With regard to present power actuated vehicle, there is not to avoid accordingly the safe precaution measure of above-mentioned maloperation in addition yet.

No. 19 last disclosed name of China's Patent Gazette for Utility Models the 3rd volume is called " the associating driving system of the acceleration of automobile and braking ", it is the device that comes the acceleration and the braking of Control of Automobile with same pedal, this is for normal driving states, need only refuel merely or brake operating is feasible, but driving is Protean, when going up a slope turning, or during the meeting of the place ahead, or the place ahead is when having obstacle, make the chaufeur right crus of diaphragm in time adjust the speed of a motor vehicle to and fro on this pedal, this " driving system " is bad realization.

The purpose of this utility model provides a kind of safety device that can prevent that Das Gaspedal from causing a traffic accident because of maloperation in order to overcome above-mentioned the deficiencies in the prior art part just, that is to say, provide a kind of and stepped on to go down suddenly as brake pedal by mistake, realize the safety device of Throttle Opening Control when Das Gaspedal.

The purpose of this utility model is to realize like this.That is: controlling machine motor vehicle safety device of accelerator pedal is by combination pedal, plunger pump, switch valve, energy storage, piston type shut off valve, check valve, flow regulating valve are formed, and be arranged on the same valve body, its mutual alignment and effect are respectively: the combination pedal is installed in the upper surface of valve body, as long as, just can make the throttle fuel feeding by existing operating instruction operation.Switch valve is contained in the hole on valve body line of centers right side, the external part of valve rod and back step bottom connection touch, have only and depress back step earlier, make that valve rod is stressed to move down, the oil main line of whole device is communicated, plunger pump is installed in the valve body line of centers left hole, the external part of pump rod and the bottom connection of front running board touch, after the switch valve valve rod moves down the oil main line conducting, it can move down under the effect of front running board, thereby the accelerator rod that is hinged with the front running board other end is moved down, realize the fuel feeding of power actuated vehicle.The piston type shut off valve is contained in the hole of valve body trailing flank, its ante-chamber communicates with the oil pocket of plunger pump, during work back cavity with communicate through the working connection after the throttling and the annular oil cavity of switch valve, because before the piston type shut off valve, the area difference that exists between back cavity, be installed in the difference of pressure that is had before and after the flow regulating valve on the working connection between plunger pump and the piston type shut off valve in addition, the spring that all need be mounted on this valve back cavity is conditioned the screw compression and tries to achieve balance, so when driver's operation is normal soft, when carrying out continuously, the piston type shut off valve is failure to actuate, oil circuit is in channel status, the even bottom along with front running board, the driving accelerator rod moves, and realizes normal fuel injection.Work as unusual circumstance, when chaufeur mistake is made front running board brake pedal and is stepped on suddenly, instantaneous velocity increases considerably, when the difference of pressure in chamber sharply is increased to certain value before and after making, thereby the piston rod that promotes the piston type shut off valve moves forward fast, the blocking-up working connection, according to the incompressibility of fluid as can be known, again can't depress front running board and order about accelerator rod and move down this moment, cause fuel feeding not increase, the unlikely quickening of the speed of a motor vehicle can remind chaufeur to brake rapidly simultaneously, to avoid the generation of serious accident.Energy storage is contained in the switch valve right hand valve body opening, it is to utilize compression of spring, and elongation stores and releases energy, and it communicates with switch valve by oil circuit on the one hand; Communicate with plunger pump and piston type shut off valve respectively by the check valve that is installed in the bypass on the other hand, constitute a controlling machine motor vehicle safety device of accelerator pedal thus with dead front type sequence control loop.

Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is the overall construction drawing of the utility model controlling machine motor vehicle safety device of accelerator pedal;

Fig. 2 is Figure 1B-B cutaway view;

Fig. 3 is Fig. 2 C-C echelon sectional view;

Fig. 4 is Fig. 2 D-D section-drawing;

Fig. 5 is Fig. 2 E portion enlarged drawing, and this figure has reflected the concrete structure of flow regulating valve;

Fig. 6 is Fig. 5 F-F cutaway view;

Fig. 7 is Fig. 6 K-K cutaway view.

Below in conjunction with accompanying drawing concrete structure of the present utility model and service condition are further described.

Referring to Fig. 1-7 the utility model controlling machine motor vehicle safety device of accelerator pedal by the combination pedal 10, plunger pump 15, switch valve 23 accumulators 29, piston type shut off valve 37, check valve 47, flow regulating valve 55 constitutes, and be installed on the same valve body 38 combination pedal 10 by the gusset piece 5 that is fixed in valve body 38 upper surfaces, distinguish the forward and backward pedal 8,2 of pivotally attached with it by bearing pin 6,4, before and after being positioned under the pedal and with the forward and backward limiting device 7,1 of valve body 38 thread connection, and constitute with accelerator rod 9 that the other end of front running board 8 is hinged; Wherein, forward and backward pedal 8,2 can be around bearing pin 6,4 swings, and the size of the amplitude of oscillation is limited by adjustable forward and backward limiting device 7,1.Switch valve 23 is contained in the valve body 38 line of centers right ports, by the saturating lid 16 that is fixed in valve body 38 upper surfaces, one end passes the valve rod 20 that the bottom connection that covers centre hole and back step 2 touches, be socketed in the seal ring 17,18 in the circular groove of two identical diameter piston of switch valve valve rod 20, and the spring 19 that is socketed in the other end is formed.Between the two-piston of valve rod 20, one groove 21 is arranged, during work under the effect of back step 2, valve rod 20 moves down, thereby the oil main line conducting that groove 21 communicates and makes total system with working connection 57, when not working, because the effect of the restoring force of spring 19 moves on the valve rod 20, the piston of one is with it moved synchronously block working connection 57, make working connection 57 be in off-state, by the incompressibility principle of fluid as can be known, though step on front running board 8 this moment, or step on forward and backward pedal 8,2 simultaneously, plunger pump pump rod 11 is moved down, promptly can not drive accelerator rod 9 and move down fuel feeding.Thereby the traffic accident that pre-anti-misoperation is caused.Plunger pump 15 is contained in the valve body 38 line of centers left hole, and it is contacted to pass the bottom of covering 12 centre hole and front running board 8 by saturating lid 12, one ends that are fixed in valve body 38 upper surfaces; The other end is inserted in the pump rod 11 that its piston portion in valve body 38 holes is socketed with seal ring 13, and the spring 14 of supporting pump rod 11 is formed, it can move down under the effect of front running board 8 after switch valve valve rod 20 moves down working connection 57 conductings, thereby the accelerator rod 9 that is hinged with front running board 8 other ends is moved down, realize the oil supply function of power actuated vehicle.Flow regulating valve 55 is installed on the working connection 57 between plunger pump 15 and the piston type shut off valve 37, and it is by screw 48, fixed, moving valve plate 49,50, and spring 51, set screw 52, pad 53, nut 54 are formed.The left side of fixed valve plate 49 is a Cylinder for half section, this section matches with valve body 38 corresponding holes, right half section in the form of sheets, have the straight trough of 11 mm wide along the central part of this leaf length direction, with have " V " type groove symmetrical 90 ° on the perpendicular direction of this groove with line of centers, fixed valve plate 49 is fixed in valve body 38 holes by screw 48, and make " V " type groove over against working connection 57, the right side of moving valve plate 50 is the cylinder with 2 grades of cylinder steps for half section, a left side is for half section can insert in fixed valve plate 49 straight troughs and have valve block with symmetrical 90 ° of " V " type grooves of line of centers, fixed, moving valve plate 49,50 peg graft mutually constitutes the square restriction of thin wall shape, as long as rotate set screw 52, just can order about moving valve plate 50 moves, hole such as figure number 56 are shown thereby the flow area that changes restriction also is square all the time, this structure can make the aperture of restriction be transferred to very little in theory, the index of planting restriction shape decision thus is near 0.5, cause less flowrate variation just can make restriction before, the back produces big difference of pressure.The piston type shut off valve is by the piston rod 35 that is contained in the valve body 38 rear side faces, the seal ring 32 of its piston region socket, the spring 31 of socket in its bar portion with the saturating lid 33 of valve body 38 Joints, and is formed with the joining set screw of adjusting piston rod 35 positions 34 of saturating lid center screw.The bar portion of piston rod 35, also be provided with groove 30 one, under the normal working, groove 30 is positioned on the working connection 57, the ante-chamber of this valve communicates with the oil pocket of plunger pump 15, back cavity by hole 36 with communicate through the working connection 57 after the throttling and the annular oil cavity 21 of switch valve 23, because the area difference that exists between the front/back cavity of piston type shut off valve 37, be installed in the existing difference of pressure in flow regulating valve 55 front and back on the working connection 57 between plunger pump 15 and the piston type shut off valve 37, the spring 31 that all need be mounted on this valve back cavity is tried to achieve balance by screw 34 compressions in addition.So when driver's operation is when normally moving, this moment, change in flow was little, piston type shut off valve 37 is failure to actuate, and working connection 57 also is in conducting state, along with the even bottom of front running board 8, can drive accelerator rod 9 and move, and realizes normal fuel injection.Even when right crus of diaphragm 3 has depressed back step 2, when abnormal condition occurring in the driving process, chaufeur mistake in flurried is a Das Gaspedal with front running board 8() when depressing suddenly as brake pedal, instant flow rate increases considerably the difference of pressure that makes piston type shut off valve 37 front/back cavities when sharply rising to certain value, thereby the elastic force that makes piston rod 35 overcome the spring 31 that its rear portion socket-connects moves down fast, blocking-up working connection 57.According to the incompressibility principle of fluid as can be known, again can't depress front running board 8 and order about accelerator rod 9 and move down this moment, causes fuel feeding can not increase, the unlikely quickening of the speed of a motor vehicle, alerting driver is braked rapidly thus, thereby avoids because the pernicious traffic accident that maloperation causes takes place.Energy storage 29 is contained in switch valve 23 right side valve bodies 38 holes, owing to be connected on stifle 28 on the valve body 38, and piston 25 and be socketed in seal ring 26 in its circular groove, and between the inner end surface of the upper surface of piston 25 and stifle 28; Spring 27,24 between the lower surface of piston 25 and this valve opening bottom is formed.This energy storage 29 utilizes compression of spring, elongation to store and releases energy.On the one hand, it communicates with switch valve 23 by oil circuit 57,22, communicates with the oil pocket of plunger pump 15 and piston type shut off valve 37 respectively by the check valve 47 that is installed in the

bypass

59,60 on the one hand, and when the fuel feeding end, the driver takes off right crus of diaphragm 3.The valve rod 20 of switch valve 23 and the pump rod 11 of plunger pump 15 reset under the restoring force effect of spring, this moment the switch valve pocket, the vacuum that plunger pump chamber and piston type shut off valve back cavity are occurred releases energy by the spring 27 of energy storage 29 and promotes piston 25 and move down, order about fluid respectively by oil circuit 57,5960 through two check valves after oil duct 58,61 backflow fillings.Check valve is by set

screw

41 or 44 in addition,

steel ball

43 or 46, and

spring

42 or 45 is formed.

Can directly be fixed on the hole 39 that bolt passes valve body 38 below the existing vehicle accelerator pedal according to the above-mentioned controlling machine motor vehicle safety device of accelerator pedal that assembles, and need not change other structure of existing vehicle with dead front type sequence control loop.

The utility model compared with prior art not only has simple in structure easy to manufacture, easy for installation, be quick on the draw, the characteristics that reliability is strong, but also can supervise the driver in strict accordance with the operational procedure steering vehicle, overcome violent Hong throttle, the custom of discharging black smoke, but fuel-economizing. This device can avoid with slow down driver's abnormal state under the serious accident that causes because of maloperation, be applicable to various motor vehicles.

Claims

1, a kind of controlling machine motor vehicle safety device of accelerator pedal, it is characterized in that by the combination pedal 10 that is contained in valve body 38 upper surfaces, be contained in the valve body 38 line of centers left hole, the contacted plunger pump 15 in the external part of its pump rod 11 and front running board 8 bottom surfaces, be contained in the valve body 38 line of centers right ports, the switch valve 23 that the bottom connection of the external part of its valve rod 20 and back step 2 touches, be contained in switch valve 23 right side valve bodies 38 holes also by oil circuit 57,22 energy storages 29 that communicate with the switch valve pocket, be contained in the piston type shut off valve 37 in the valve body 38 rear side faces, be contained in the check valve 47 on the oil circuit between energy storage 29 and piston type shut off valve 37 and the plunger pump 15, and the flow regulating valve 55 that is contained between plunger pump 15 and the piston type shut off valve 37 is formed jointly.

2, according to the described controlling machine motor vehicle of claim 1 safety device of accelerator pedal, it is characterized in that plunger pump 15 by pump rod 11, covers 12 thoroughly, seal ring 13, spring 14 is formed.

3, according to the described controlling machine motor vehicle of claim 1 safety device of accelerator pedal, it is characterized in that making up pedal 10 by forward and backward pedal 8,2, front and back limiting device 7,1, bearing pin 6,4, gusset piece 5, accelerator rod 9 is formed.

4, according to the described controlling machine motor vehicle of claim 1 safety device of accelerator pedal, it is characterized in that switch valve 23 by saturating lid 16, seal ring 17,18, spring 19, valve rod 20 is formed.

5, according to the described controlling machine motor vehicle of claim 1 safety device of accelerator pedal, it is characterized in that energy storage 29 by spring 24, piston 25, seal ring 26, spring 27, stifle 28 is formed.

6, according to the described controlling machine motor vehicle of claim 1 safety device of accelerator pedal, it is characterized in that piston type shut off valve 37 by spring 31 seal rings 32, covers 33 thoroughly, set screw 34, piston rod 35 is formed.

7, according to the described controlling machine motor vehicle of claim 1 safety device of accelerator pedal, it is characterized in that flow regulating valve 55 by screw 48, fixed, moving valve plate 49,50, spring 51, set screw 52, pad 53, nut 54 is formed.

8,, it is characterized in that by restriction fixed, that moving valve plate 49,50 grafting form be the thin-walled square according to claim 1,7 described controlling machine motor vehicle safety device of accelerator pedal.