CN2383736Y - Emergent brake for automobile ` - Google Patents

Abstract

The utility model relates to an emergent brake device for an automobile, which solves the problem that a running automobile must brake again when a driving braking system is failed. The emergent brake device for an automobile is characterized in that a bottom plate of an outer shell is provided with a hydraulic pump (4), an electronic control device (7) and an electromagnetic oil return valve (6). An electromagnetic coil (22) of the hydraulic pump (4) is electrically connected with an accumulator jar (2) by the electronic control device (7) and a control switch (3), and the hydraulic pump (4) is connected with the electromagnetic oil return valve (6) and an emergent brake sub-pump (50) respectively by a small hole (38) and a connection oil pipe (5) in a liquid path. The hydraulic pressure generated on the hydraulic pump (4) which is driven electromagnetically is used for acting on the emergent brake sub-pump (50), a brake block (58) is driven to do friction movement with a brake rim (61), and then braking again can be generated. Consequently, traffic accidents due to the failure of the driving braking system of the automobile can be effectively avoided.

Description

Emergent brake for automobile

The utility model belongs to the vehicular transport class, is specifically related to a kind of emergent brake for automobile.

According to International Standardization Organization [ISO] regulation, automobile must have four kinds of brake system, and promptly drive a vehicle brake system, emergency brake system, auxiliary braking system also have secondary braking sytem.

The car emergency brake system is that the assurance automobile still can be realized slowing down or stop and should be provided with under the situation that service braking system lost efficacy.Present service braking system mainly is divided into three kinds of vapour-pressure type, hydraulic type and compound types.These three kinds of brake mode common characteristic are that energy supply device, control setup, driving device, the drg in the brake system all is combination in series.That is to say that lost efficacy as a place, whole brake system will be malfunctioning, and traffic accident very easily takes place.Therefore the configuration of car emergency brake system just seems very necessary.Known to the contriver, up to the present, it is blank that the car emergency brake system belongs to basically, do not dispose secondary braking sytem on most automobiles as yet, in case of long during apart from descending service braking system lost efficacy, the driver can only adopt the way of " robbing shelves ", just is converted to low gear rapidly by high speed gear, utilizes the auxiliary braking effect of driving engine, stabilizing speed, be used emergency brake system, promptly " parking brake " slows down the speed of a motor vehicle, reaches the purpose of parking at last." if rob shelves " failure, variable gear is deviate from and is hung low gear from high speed gear, has just become said " neutral gear ", and it is very bad that situation just becomes.In the case, automobile has lost the auxiliary braking effect of driving engine, and the speed of a motor vehicle will be more and more faster, cause ouster le main situation at last, get into an accident.This " rob shelves " mode has introduction 108,109 pages the 232nd, 233 of Golden Shield press publishes in April, 1987 " automobile driver 1000 what if " book in what if.

The Mitsubishi automobile is provided with a kind of wheel self-locking device, and when having only automobile pressure to reach certain value, wheel could rotate, otherwise wheel will " locking ".Domestic also have a tame research institution to release a kind of " spring power-storing brake ", is similar to this mode.And this mode has its limitation, when breaking down as the relevant position of automobile, must repair in the original place, want to drag away drag motionless.In case and leather cup gas leakage, will produce the self-retention phenomenon, when serious also sideslip can take place.Another point, this structure declutches when automobile has brake pressure, band-type brake during no brake pressure, this is definitely impracticable on the oil brake that produces brake pressure on the small and medium-sized car with the chaufeur leg muscle.In addition this device volume is bigger, and dilly can not load at all.

The disclosed a kind of the Yellow River of the 280th page of Figure 28-37 of " vehicle structure " book volume two JN162 type automobile pressure brake circuit scheme drawing that write by Jilin Industry University automobile teaching and research room, People's Transportation Press's publication in 1991, introduced a kind of double loop brake equipment, it is the lose-lose feed channel, two storage tanks, compressed air brake cylinder after dual-chamber brake and the combined type.The big component part of four in the running brake system just, the combined type of having had only control system and transmission adopted, and in other system, as: energy supply device, drg are still the single loop mode, in case of braking under driving engine, Air compressor damage or the also unfounded situation of braking pressure, still can cause brake failure.Also have the brake facing excessive wear in the drg, also can cause brake failure under the serious situation about descending of friction moment.Have a large amount of automobiles in addition both at home and abroad now, owing to structural reason, also this device is installed in inconvenience additional.Particularly some small passenger cars owing to the volume reason, can not be installed so much storage tank and solve the emergency brake problem.Therefore car emergency braking problem remains on the present this level always, and the traffic accident that causes because of automobile brake is malfunctioning happens occasionally.

The purpose of this utility model, exactly in order to solve automobile in travelling under the situation that service braking system lost efficacy, prevent cross-up, cause the generation of disturbing accident and a kind of emergent brake for automobile that is independent of the running brake system of design-calculated, brake again so that under the situation that service braking system lost efficacy, produce actv., with the generation of the traffic accident avoiding causing therefrom.Do following narration in conjunction with the accompanying drawings:

Accompanying drawing 1 is that the emergent brake for automobile energy supply device is faced structural representation;

Accompanying drawing 2 is emergent brake for automobile energy supply device plan structure scheme drawings;

Accompanying drawing 3 is that the emergent brake for automobile Hydraulic Pump is faced structural representation;

Accompanying drawing 4 is emergent brake for automobile Hydraulic Pump plan structure scheme drawings;

Accompanying drawing 5 is that emergent brake for automobile electromagnetism fuel-return valve is faced structural representation;

Accompanying drawing 6 is that the emergent brake for automobile emergency stopper is faced structural representation;

Accompanying drawing 7 is emergent brake for automobile emergency brake wheel cylinder sectional structure scheme drawings;

Accompanying drawing 8 is emergent brake for automobile emergency stopper brake shoes inhibiting device sectional structure scheme drawings;

Accompanying drawing 9 is the whole connection diagrams of emergent brake for automobile.

A kind of emergent brake for automobile, it is characterized in that: on shell [11] tank top plate of energy supply device [1], Hydraulic Pump [4] is installed, electronic control package [7], electromagnetism fuel-return valve [6], receiver [8] is installed below shell [11], magnet coil [22] in the Hydraulic Pump [4] is electrically connected with electronic control package [7], electronic control package [7] is electrically connected with automobile accumulator jar [2] by master cock [3], electromagnetism fuel-return valve [6] is connected with Hydraulic Pump [4] liquid road by aperture [38], stretch in the braking liquid [9] in receiver [8] lower end of the inlet valve [37] of Hydraulic Pump [4], electromagnetism fuel-return valve [6] is connected by interior braking liquid [9] the liquid road of oil return pipe [14] and receiver [8], and Hydraulic Pump [4] is by delivery valve straight-through [13], connecting oil pipe [5] is connected with emergency brake wheel cylinder [50] the liquid road that is placed in emergency stopper [62] downside.Figure shown in [3] be emergent brake for automobile Hydraulic Pump, adopt an embodiment of the pluger type hydraulic pump of Electromagnetic Drive, Hydraulic Pump can also be blade-type pump, the gear type pump of motor driven.

Said emergent brake for automobile, it is characterized in that: Hydraulic Pump [4] is by the pump housing [12], inlet valve [37], delivery valve [17], delivery valve leads directly to [13], plunger [21], plunger sleeve [20], magnet coil [22], soft iron [25], piston spring [23], coil case [28], flux sleeve [29], back cover [24] is formed, wherein: the pump housing [12] horizontal direction is respectively equipped with the hole of mutual perforation, the lower end in the left end in horizontal direction hole and vertical direction hole, be respectively equipped with screw thread, in the horizontal direction right-hand member hole, be installed with plunger sleeve [20], plunger sleeve [20] is equipped with delivery valve [17] in the left end hole, inlet valve [37] is equipped with by the screw element form in the pump housing [12] lower end, left end one side is provided with an aperture [38], be provided with electromagnetism fuel-return valve [6] in the slightly bigger lateral aperture in the right side of aperture [38], the lower end on aperture [38] right side is provided with upright opening, and connects with receiver [8] by the oil return pipe [14] that is installed in the upright opening lower end;

Inlet valve extension bar [31] the upper end external diameter of said inlet valve [37] has screw thread, the center is porose, after passing O-ring seals, the upper end is threaded with the hole of the pump housing [12] lower vertical direction, and be connected with oil-feed valve body [34] by thread forms, the lower end is passed O-ring seals [32] and is stretched in oil-feed valve body [34] mider hole;

Said oil-feed valve body [34] upper end endoporus is provided with screw thread, the center is provided with the hole of different-diameter, oil-feed valve body [34] is connected with inlet valve extension bar [31] by the upper end inner hole thread, oil-feed valve body [34] lower end endoporus is laid filter cloth frame [36], and whole oil-feed valve body [34] is stretched braking liquid [9] lining in the receiver [8] below shell [11];

Said oil-feed spool [33] upper end is a pile body, and the lower end is a cylinder, and cylinder axis is to being carved with the multiple tracks groove, and cylinder is placed in the hole of the thin diameter in oil-feed valve body [34] middle part;

Said delivery valve [17] is made up of a cylinder and a cone, and cylinder axis is to being carved with the multiple tracks groove, and delivery valve [17] cylinder is placed in plunger sleeve [20] hole, and there is delivery valve spring [16] on the left end top;

Said plunger [21] is a cylinder component of being made up of different-diameter, and right-hand member is locked in soft iron [25] centre hole by spring collar [26], and left end passes piston spring [23] and is placed in plunger sleeve [20] hole;

Said plunger sleeve [20] is a kind of sleeve shape body member, the twice groove is arranged on the external diameter, O-ring seals [18] is housed respectively in the groove, and left radial is provided with the hole [30] that connects with the pump housing [12], inlet valve [37], and the centre hole two ends are laid delivery valve [17] and plunger [21] respectively;

Said magnet coil [22] is a toroidal winding, and integral body is placed in the coil case [28], and inner hole sleeve is laid soft iron [25] barrel portion in the right-hand member hole on flux sleeve [29], and pig-tail wire is electrically connected with accumulator jar [2] and electronic control package [7] respectively;

Said soft iron [25] is the T shape conducting magnetic component that a cylinder and pan are formed, and soft iron [25] left end is pressed with piston spring [23], lays plunger [21] in the centre hole, and right-hand member is placed in the back cover [24];

Said flux sleeve [29] is the sleeve shape body member that an external diameter is made up of different-diameter, after left end is enclosed within on plunger sleeve [20] the right part external diameter, be installed in the pump housing [12] right ports, flux sleeve [29] right-hand member is placed in magnet coil [22] centre hole after passing coil case [28];

Said coil case [28] is a goblet member, the right-hand member external diameter is provided with screw thread, be connected with back cover [24] by screw thread, right-hand member is provided with groove in the hole, be installed with jump ring [27] in the groove, after the left bottom centre hole is enclosed within on flux sleeve [29] the left end external diameter, be fastened on the pump housing [12] right side by bolt [19];

Said back cover [24] is that an internal diameter oral area is provided with the goblet member that screw thread, bottom are provided with a plurality of apertures, lays soft iron [25] in the cup, and is connected with coil case [28] by screw thread.

Said electromagnetism fuel-return valve [6] is by oil return spool [39], valve core spring [47], promote cup [40], catch bar [41], armature [43], iron core [44], coil [45], bearing support [46], retracing spring [48], spring cup [49] is formed, wherein: oil return spool [39] is a cylinder of being made up of a plurality of different-diameters, cylindrical left side is provided with a cone, be provided with a cake body between cone and the cylinder, the top of cone leans against in aperture [38] right ports of the pump housing [12], oil return spool [39] right-hand member passes spring cup [49] left bottom centre hole, is enclosed within the valve core spring [47];

It is said that to promote cup [40] be an external diameter by different-diameter is formed, internal diameter is porose goblet member, the center, right side of promotion cup [40] is provided with screw and is connected with catch bar [41] by screw thread, promote to lay valve core spring [47] in the cup [40], the left side that promotes cup [40] is enclosed within the retracing spring [48], and whole promotion cup [40] is placed in spring cup [49] right side oral area;

Said armature [43] is one by the strip member that different-thickness is formed, middle part and two ends are provided with the hole, and mider hole is enclosed within catch bar [41] right-hand member, and the left plane of armature [43] is close to by screw [42] on the right side vertical surface of the pump housing [12];

Said iron core [44] is an E font conducting magnetic component, and intermediate sleeve has coil [45], and the center, left side leans against the right-hand member of catch bar [41], and iron core [44] outer rim is placed in the bearing support [46];

Said coil [45] is a shell-like member by the covered wire coiled, and whole winding is enclosed within iron core [44] intermediate projections portion, coil one end ground connection, and the other end is electrically connected with accumulator jar [2] by master cock [3];

Said bearing support [46] is a square member that is converted into by thin plate, the upper and lower hangers that respectively is provided with, and the hangers center is porose, and its inboard is enclosed within on the outer rim of iron core [44], and upper and lower hangers is close on upper and lower two chain-waless of armature [43] by screw [42];

Said spring cup [49] is that an oral area external diameter has edge, the porose goblet member of bottom centre, and whole spring cup is installed in the lateral aperture on the pump housing [12] right side, and port part is close on the plane, armature [43] left side.

Said emergent brake for automobile, it is characterized in that: emergency stopper [62] is by brake chassis [60], brake shoes [59], brake facing [58], brake hubs [61], emergency brake wheel cylinder [50], shoes inhibiting device [73] is formed, wherein: brake chassis [60] is the disc-shaped component that a thin plate is made, dish is provided with a plurality of holes, the both sides of dish are laid two brake shoes [59] respectively, the brake cam [63] of former service braking system is laid on the top of dish, emergency brake wheel cylinder [50] is laid in the bottom of dish, the emergency stopper [62] of shown in Figure 6 is emergent brake for automobile is used in an embodiment of vapour-pressure type service braking system vehicle, and emergency stopper [62] can also be used in other hydraulic type, the vehicle of compound type service braking system.

Said brake shoes [59] is one by the synthetic arc component of arc shoestring and fan-shaped arcuation body orthogonal sets, the outer rim of arc is laid brake facing [58], top is connected with brake cam [63], the bottom is connected with emergency brake wheel cylinder [50], and the middle part is connected with brake chassis [60] by caging bolt [69].

Said emergent brake for automobile, it is characterized in that: emergency brake wheel cylinder [50] is by cylinder body [52], piston [56], leather cup [55], regulating bolt [51] forms, wherein: cylinder body [52] is the member that a sleeve shape body and cuboid are formed, both sides are laid two pistons [56] respectively in the hole of sleeve shape body, leather cup [55], the middle and upper part of cylinder body [52] is provided with deflation hole [65], the bottom is provided with fuel feed hole [66], the left end of deflation hole [65] is laid blow off valve [64], and fuel feed hole [66] passes through oil connector bolt [67] and is connected the connection of oil pipe [5] liquid road, cylinder body [52] is fastened on brake bottom, chassis [60] by hexagonal bar iron [68];

Said piston [56] is the member that a Cylinder and garden cake body are formed, one side of Cylinder has been cut groove, lay leather cup [55] in the groove, the opposite side of Cylinder is provided with a garden cake body, the external diameter of garden cake body is provided with multiple tracks groove [57], is pressed with retaining spring [53] on the groove, and piston [56] is provided with blind hole near a side center of brake shoes [59], be provided with screw thread in the hole, and be connected with adjusting bolt [51] by screw thread;

Said leather cup [55] is that a center is porose, the bowl bodies member that profile is tapered, and leather cup [55] is placed in piston [56] groove by centre hole, and together is placed in cylinder body [52] hole with piston [56];

Said adjusting bolt [51] is a Cylinder member of being made up of different-diameter, slightly carefully be carved with screw thread on the Cylinder external diameter of a bit, and be placed in piston [56] centre hole by screw thread, thick slightly any Cylinder end face is provided with square groove, and is connected with the shoes [59] that brakes by square groove;

Said retaining spring [53] is the strip member that a thin slice constitutes, the middle part is provided with two holes, and be fastened on the side of cylinder body [52] by screw, and the V-shaped shape in two ends of retaining spring [53], V-arrangement shape projection is pressed in respectively in the groove [57] on two-piston [56] the pan external diameter.

Said emergent brake for automobile, it is characterized in that: shoes inhibiting device [73] is made up of caging bolt [69], catch [71], spring [72], wherein: caging bolt [69] is a rectangular Cylinder, one end is provided with garden cake body, one end external diameter is carved with screw thread, and caging bolt [69] passes brake chassis [60], brake shoes [59] mider hole, spring [72], catch [71] and is threaded with nut [70];

Said catch [71] is the porose garden shape sheet members in a center, is placed on the both ends of the surface of spring [72] by caging bolt [69];

Said spring [72] is a spiral fashion member by the steel wire coiled, with catch [71], is enclosed within on the caging bolt [69], is pressed in brake shoes [59] the fan-shaped arcuation body on the facial planes by nut [70].

When automobile driver finds that service braking system lost efficacy, can timely closed master cock [3], coil [45] in the electromagnetism fuel-return valve [6] continues, the sucked back left end of iron core [44], promotion catch bar [41], promotion cup [40], oil return spool [39] move to left, oil return spool [39] left end cone is sealed aperture [38], and self-hydraulic pump [4] cuts out towards the liquid road of receiver [8] in the future.Electronic control package [7] is started working simultaneously, export a series of square-wave pulses, drive in the Hydraulic Pump [4] magnet coil [22] for a moment, dead electricity for a moment, when electric magnet coil [22] produce magnetic field, soft iron [25] is sucked back, plunger [21] moves to left, piston spring [23] energy storage, will inject in advance braking liquid in plunger sleeve [20] centre hole through delivery valve [17], delivery valve straight-through [13], connect oil pipe [5] and be depressed in the emergency brake wheel cylinder [50] on the emergency stopper [62].When magnet coil [22] dead electricity, magnetic field disappears, and piston spring [23] promotes soft iron [25], plunger [21] moves to right, and it is big that plunger sleeve [20] centre hole sealed volume becomes, and opens oil-feed spool [33] by negative pressure, and braking liquid [9] is inhaled in plunger sleeve [20] centre hole.When magnet coil [22] once more when electric, soft iron [25] is sucked back again, plunger [21] moves to left, oil-feed spool [33] will return the path blockade of receiver [8], braking liquid [9] in the plunger sleeve [20] can only be opened delivery valve [17], is depressed into again in the emergency brake wheel cylinder [50], and two pistons [56] inside promoting to be contained in move to two ends, the brake facing [58] that promotes on the brake shoes [59] comes on brake hubs [61] inner headed face, produces brake action.This moment Hydraulic Pump [4] go round and begin again, continuous working, constantly with brake fluid pressure to emergency brake wheel cylinder [50], friction positive pressure on the brake facing [58] progressively increases, the braking force that is produced also constantly strengthens, and forces automobile to stop getting off gradually, reaches the purpose of emergency brake.

After automobile stopped fully, the operation emergency brake system made car keep transfixion.Closing control switch [3] quits work Hydraulic Pump [4].Coil [45] dead electricity in electromagnetism fuel-return valve this moment [6], the electromagnetic push that acts on the catch bar [41] disappears, under the effect of retracing spring [48], move to right, the positive pressure that acts on the oil return spool [39] disappears, and the path that leads to receiver [8] is opened, and the positive pressure that acts on the brake shoes [59] also disappears, under the effect of shoes retracing spring [54], brake shoes [59] is resetted, act on the power complete obiteration on the brake hubs [61], system's brake off state.Braking liquid turns back in the receiver [8] and stores, and whole emergent brake for automobile restPoses standby.

Blow off valve [64] drains air setting for whole liquid-way system.Because the compressibility of gas, require not allow air in the liquid-way system of emergent brake for automobile and exist, so establish this valve.When first dress, open blow off valve [64], close after making braking liquid be full of whole liquid-way system, to guarantee the normal use of whole emergent brake for automobile.

Master cock [3] is a kind of double-pole single throw, one road control electronic control package [7], and one tunnel Control of Automobile brake lamp [74] is to bring into play its original effect.

Because emergent brake for automobile is except that drg, be totally independent of the running brake system, and the energy of this device is taken from automobile power source again, and therefore automobile power source will guarantee the reliability and the promptness of the energy supply device in the emergency brake device greatly by accumulator jar and the dual supply of electrical generator.In car brake, be equipped with automobile brake sheet wear limit annunciator again, the reliability of whole car emergency brake system is improved greatly.And this device volume is less, but cart, dolly, towed vehicle, trac. adapted all has bigger field of application.After the enforcement, can avoid the traffic accident of losing efficacy and to cause effectively, for vehicle safety travel provides new guarantee because of service braking system.

Claims (6)

1, a kind of emergent brake for automobile, it is characterized in that: on shell [11] tank top plate of energy supply device [1], Hydraulic Pump [4] is installed, electronic control package [7], electromagnetism fuel-return valve [6], receiver [8] is installed below shell [11], magnet coil [22] in the Hydraulic Pump [4] is electrically connected with electronic control package [7], electronic control package [7] is electrically connected with automobile accumulator jar [2] by master cock [3], electromagnetism fuel-return valve [6] is connected with Hydraulic Pump [4] liquid road by aperture [38], stretch in the braking liquid [9] in receiver [8] lower end of the inlet valve [37] of Hydraulic Pump [4], electromagnetism fuel-return valve [6] is connected by interior braking liquid [9] the liquid road of oil return pipe [14] and receiver [8], and Hydraulic Pump [4] is by delivery valve straight-through [13], connecting oil pipe [5] is connected with emergency brake wheel cylinder [50] the liquid road that is placed in emergency stopper [62] downside.

2, according to the said emergent brake for automobile of claim 1, it is characterized in that: Hydraulic Pump [4] is made up of the pump housing [12], inlet valve [37], delivery valve [17], delivery valve straight-through [13], plunger [21], plunger sleeve [20], magnet coil [22], soft iron [25], piston spring [23], coil case [28], flux sleeve [29], back cover [24], wherein:

A, the pump housing [12] horizontal direction is respectively equipped with the hole of mutual perforation, the lower end in the left end in horizontal direction hole and vertical direction hole, be respectively equipped with screw thread, in the horizontal direction right-hand member hole, be installed with plunger sleeve [20], plunger sleeve [20] is equipped with delivery valve [17] in the left end hole, inlet valve [37] is equipped with by the screw element form in the pump housing [12] lower end, left end one side is provided with an aperture [38], be provided with electromagnetism fuel-return valve [6] in the slightly bigger lateral aperture in the right side of aperture [38], the lower end on aperture [38] right side is provided with upright opening, and connects with receiver [8] by the oil return pipe [14] that is installed in the upright opening lower end;

Inlet valve extension bar [31] the upper end external diameter of B, inlet valve [37] has screw thread, the center is porose, after passing O-ring seals, the upper end is threaded with the hole of the pump housing [12] lower vertical direction, and be connected with oil-feed valve body [34] by thread forms, the lower end is passed O-ring seals [32] and is stretched in oil-feed valve body [34] mider hole;

C, oil-feed valve body [34] upper end endoporus are provided with screw thread, and the center is provided with the hole of different-diameter, and oil-feed valve body [34] is connected with inlet valve extension bar [31] by the upper end inner hole thread; Oil-feed valve body [34] lower end endoporus is laid filter cloth frame [36], and whole oil-feed valve body [34] is stretched braking liquid [9] lining in the receiver [8] below shell [11];

D, oil-feed spool [33] upper end are a pile body, and the lower end is a cylinder, and cylinder axis is to being carved with the multiple tracks groove, and cylinder is placed in the hole of the thin diameter in oil-feed valve body [34] middle part;

E, delivery valve [17] are made up of a cylinder and a cone, and cylinder axis is to being carved with the multiple tracks groove, and delivery valve [17] cylinder is placed in plunger sleeve [20] hole, and there is delivery valve spring [16] on the left end top;

F, plunger [21] are a cylinder component of being made up of different-diameter, and right-hand member is locked in soft iron [25] centre hole by spring collar [26], and left end passes piston spring [23] and is placed in plunger sleeve [20] hole;

G, plunger sleeve [20] are a kind of sleeve shape body members, external diameter is provided with the twice groove, O-ring seals [18] is housed respectively in the groove, and left radial is provided with the hole [30] that connects with the pump housing [12], inlet valve [37], and the centre hole two ends are laid delivery valve [17] and plunger [21] respectively;

H, magnet coil [22] are a toroidal winding, and integral body is placed in the coil case [28], and inner hole sleeve is laid soft iron [25] barrel portion in the right-hand member hole on flux sleeve [29], and pig-tail wire is electrically connected with accumulator jar [2] and electronic control package [7] respectively;

I, soft iron [25] are the T shape conducting magnetic component that a cylinder and pan are formed, and soft iron [25] left end is pressed with piston spring [23], lays plunger [21] in the centre hole, and right-hand member is placed in the back cover [24];

J, flux sleeve [29] are the sleeve shape body member that an external diameter is made up of different-diameter, after left end is enclosed within on plunger sleeve [20] the right part external diameter, be installed in the pump housing [12] right ports, flux sleeve [29] right-hand member is placed in magnet coil [22] centre hole after passing coil case [28];

K, coil case [28] are a goblet member, the right-hand member external diameter is provided with screw thread, be connected with back cover [24] by screw thread, right-hand member is provided with groove in the hole, be installed with jump ring [27] in the groove, after the left bottom centre hole is enclosed within on flux sleeve [29] the left end external diameter, be fastened on the pump housing [12] right side by screw [19];

L, back cover [24] are that an internal diameter oral area is provided with the goblet member that screw thread, bottom are provided with a plurality of apertures, lay soft iron [25] in the cup, and are connected with coil case [28] by screw thread.

3, according to the said emergent brake for automobile of claim 1, it is characterized in that: electromagnetism fuel-return valve [6] is made up of oil return spool [39], valve core spring [47], promotion cup [40], a catch bar [41], armature [43], iron core [44], coil [45], bearing support [46], retracing spring [48], spring cup [49], wherein:

A, oil return spool [39] are a cylinder of being made up of a plurality of different-diameters, cylindrical left side is provided with a cone, be provided with a cake body between cone and the cylinder, the top of cone leans against in aperture [38] right ports of the pump housing [12], oil return spool [39] right-hand member passes spring cup [49] left bottom centre hole, is enclosed within the valve core spring [47];

B, to promote cup [40] be an external diameter by different-diameter is formed, internal diameter is porose goblet member, the center, right side of promotion cup [40] is provided with screw and is connected with catch bar [41] by screw thread, lay valve core spring [47] in the cup, the left side that promotes cup [40] is enclosed within the retracing spring [48], and whole promotion cup [40] is placed in spring cup [49] right side oral area;

C, armature [43] are one by the strip member that different-thickness is formed, middle part and two ends are provided with the hole, and mider hole is enclosed within catch bar [41] right-hand member, and the left plane of armature [43] is close to by screw [42] on the right side vertical surface of the pump housing [12];

D, iron core [44] are an E font conducting magnetic component, and intermediate sleeve has coil [45], and the center, left side leans against the right-hand member of catch bar [41], and iron core [44] outer rim is placed in the bearing support [46];

E, coil [45] they are a shell-like member by the covered wire coiled, and whole winding is enclosed within iron core [44] intermediate projections portion, coil one end ground connection, and the other end is electrically connected with accumulator jar [2] by master cock [3];

F, bearing support [46] they are a square member that is converted into by thin plate, the upper and lower hangers that respectively is provided with, and the hangers center is porose, and its inboard is enclosed within on the outer rim of iron core [44], and upper and lower hangers is close on upper and lower two chain-waless of armature [43] by screw [42];

G, spring cup [49] are that an oral area external diameter has edge, the porose goblet member of bottom centre, and whole spring cup is installed in the lateral aperture on the pump housing [12] right side, and port part is close on the plane, armature [43] left side.

4, according to the said emergent brake for automobile of claim 1, it is characterized in that: emergency stopper [62] is made up of brake chassis [60], brake shoes [59], brake facing [58], brake hubs [61], emergency brake wheel cylinder [50], shoes inhibiting device [73], wherein:

A, brake chassis [60] are the disc-shaped component that a thin plate is made, dish is provided with a plurality of holes, the both sides of dish are laid two brake shoes [59] respectively, and the brake cam of former service braking system [63] is laid on the top of dish, and emergency brake wheel cylinder [50] is laid in the bottom of dish;

B, brake shoes [59] are an arc component that is synthesized by arc shoestring and fan-shaped arcuation body orthogonal sets, the outer rim of arc is laid brake facing [58], top is connected with brake cam [63], and the bottom is connected with emergency brake wheel cylinder [50], and the middle part is connected with brake chassis [60] by caging bolt [69].

5, according to claim 1 and the said emergent brake for automobile of claim 4, it is characterized in that: emergency brake wheel cylinder [50] is made up of cylinder body [52], piston [56], leather cup [55], adjusting bolt [51], wherein:

A, cylinder body [52] are the member that a sleeve shape body and cuboid are formed, both sides are laid two pistons [56], leather cup [55] respectively in the hole of sleeve shape body, the middle and upper part of cylinder body [52] is provided with deflation hole [65], the bottom is provided with fuel feed hole [66], the left end of deflation hole [65] is laid blow off valve [64], fuel feed hole [66] by oil connector bolt [67] be connected that oil pipe [5] liquid road connects, cylinder body [52] is fastened on the bottom, chassis [60] of braking by hexagonal bar iron [68];

B, piston [56] are the member that a Cylinder and garden cake body are formed, one side of Cylinder has been cut groove, lay leather cup [55] in the groove, the opposite side of Cylinder is provided with a garden cake body, the external diameter of garden cake body is provided with multiple tracks groove [57], is pressed with retaining spring [53] on the groove, and piston [56] is provided with blind hole near a side center of brake shoes [59], be provided with screw thread in the hole, and be connected with adjusting bolt [51] by screw thread;

C, leather cup [55] they are that a center is porose, the bowl-like member that profile is tapered, and leather cup [55] is placed in piston [56] groove by centre hole, and together is placed in cylinder body [52] hole with piston [56];

D, to regulate bolt [51] be a Cylinder member of being made up of different-diameter, slightly carefully be carved with screw thread on the Cylinder external diameter of a bit, and be placed in piston [56] centre hole by screw thread, thick slightly any Cylinder end face is provided with square groove, and is connected with the shoes [59] that brakes by square groove;

E, retaining spring [53] are the strip member that a thin slice constitutes, the middle part is provided with two holes, and be fastened on the side of cylinder body [52] by screw, and the V-shaped shape in two ends of retaining spring [53], V-arrangement shape projection is pressed in respectively in the groove [57] on two-piston [56] the pan external diameter.

6, according to the said emergent brake for automobile of claim 1, it is characterized in that: shoes inhibiting device [73] is made up of caging bolt [69], catch [71], spring [72], wherein:

[[69] are a rectangular Cylinder, and an end is provided with garden cake body, and an end external diameter is carved with screw thread, and caging bolt [69] passes brake chassis [60], brake shoes [59] mider hole, spring [72], catch [71] and is threaded with nut [70] for A, caging bolt;

B, catch [71] are the porose garden shape sheet members in a center, are placed on the both ends of the surface of spring [72] by caging bolt [69];

C, spring [72] are a spiral fashion member by the steel wire coiled, with catch [71], are enclosed within on the caging bolt [69], are pressed in brake shoes [59] the fan-shaped arcuation body on the facial planes by nut [70].

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