CN105715503A

CN105715503A - Energy-saving electromagnetic vacuumizing brake booster device

Info

Publication number: CN105715503A
Application number: CN201610082781.2A
Authority: CN
Inventors: 徐昌正
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-02-06
Filing date: 2016-02-06
Publication date: 2016-06-29

Abstract

The invention discloses an energy-saving electromagnetic vacuumizing brake booster device, and belongs to the field of hydraulic-brake vacuum booster for automobiles. An electromagnetic coil of the energy-saving electromagnetic vacuumizing brake booster device is arranged outside a negative pressure shell, a protection shell is fixed on the negative pressure shell, and a gas pumping tube is fixed at the lower end of the negative pressure shell; a gas outlet valve is fixed in a central hole of the negative pressure shell, an iron core spring and a magnetically-induced piston are arranged in the negative pressure shell, the iron core spring is abutted against the lower end surface of the magnetically-induced piston, a gas pumping channel of a gas pumping cavity is sealed by a sealing ball or a sealing cone, and a gas pumping channel of a gas extrusion cavity is sealed by a sealing cap; and a fixing plug is fixed in a plug hole in the magnetically-induced piston, and a sealing ball or a sealing cone is installed in an inner cone hole. The energy-saving electromagnetic vacuumizing brake booster device is compact in structure, small in vibration, high in electric energy utilization rate, high in power, suitable for being installed and used in vacuum booster type hydraulic-brake electric automobiles and internal-combustion-engine automobiles, capable of normally generating a vacuum and realizing vacuum booster after internal combustion engines stop running, good in industrialization market prospect, high in commercial value, and convenient to manufacture and use.

Description

Extracting vacuum brake boost energy-saving electromagnetic device

Technical field

The present invention relates to a kind of extracting vacuum brake boost energy-saving electromagnetic device for producing vacuum power to the vacuum booster of the master cylinder of automobile.

Background technology

The vacuum pump used on traditional automobile is to adopt bias to lay eggs formula, and laing eggs produces suction when rotated and carry out bleeding and producing vacuum.

Summary of the invention

That the present invention relates in order that provide a kind of electromagnetic linear to pull piston movement to bleed and produce manufacture and the method thereof of the extracting vacuum brake boost energy-saving electromagnetic device of vacuum.

For achieving the above object, extracting vacuum brake boost energy-saving electromagnetic device of the present invention mainly includes protecting crust, solenoid, negative pressure shell, aspirating hole, ball sealer or seals cone, seals cap, limits cap, iron core spring, answers magnetic piston, fixing plug, internal taper hole, passage, air outlet valve, exhaust tube, field controller, electronic remote controller；

Or, described extracting vacuum brake boost energy-saving electromagnetic device mainly includes protecting crust, solenoid, negative pressure shell, aspirating hole, ball sealer or seals cone, seals cap, limits cap, iron core spring, answers magnetic piston, fixing plug, internal taper hole, passage, air outlet valve, exhaust tube, field controller.

Being provided with solenoid in protecting crust, solenoid is fixed on the lower part outside negative pressure shell, and protecting crust is fixed on the lower sections of outside protection solenoid of negative pressure shell；Below the outside of protecting crust, one side is fixed with foot rest, and the lower end of foot rest protects exhaust tube not oppressed lower than negative pressure shell lower end, and the lower end of foot rest is fixed on the vehicle frame of automobile.

The circuit connecting solenoid is connected with field controller, the circuit of field controller is connected with electronic remote controller, electronic remote controller is connected with insulated electric conductor, and the electronic signal receptor of field controller, electronic remote controller and electronic remote controller is arranged in protecting crust；Or, the circuit connecting solenoid is connected with field controller, and the circuit of field controller is connected with insulated electric conductor, and field controller is arranged in protecting crust.

Restriction cap, ball sealer are installed in negative pressure shell or seal cone, iron core spring, answer magnetic piston, seal cap, fix plug, magnetic piston is answered to be arranged on the upper part of inner chamber of negative pressure shell, iron core spring is arranged on the lower part of the inner chamber of negative pressure shell, the lower end of iron core spring is pressed in the lower end in negative pressure shell, top, upper end and is pressed in the bottom answering magnetic piston, answers magnetic piston can slide up and down at the interior intracavity of negative pressure shell；The lower sections of sealing neck answering the consent in magnetic piston is provided with sealing cap, the capped pipe part sealing cap can slide up and down on the periphery sealing neck, being provided with in consent and fix the sliding distance filled in when limiting sealing cap upward sliding, the fixing plug fixing employing interference fit in consent is fixed or threaded engagement is fixed or adopts jump ring to be stuck in the jump-ring slot in consent fixes the two ends filled in；The inner sealing surface that the inner top of sealing cap divides can close the passage bled answered on magnetic piston when coordinating with annular sealing surface and seal, the inner sealing surface that the inner top of sealing cap divides can open, when separating with annular sealing surface, the passage bled answered on magnetic piston；Being provided with ball sealer in the internal taper hole sealed in neck of the lower end in negative pressure shell or seal cone, restriction cap is fixed on the outside sealing neck by screw thread or jump ring；Ball sealer or sealing cone and the internal taper hole sealed in neck coordinate and can seal or open the passage bled in entrance negative pressure shell；When answering magnetic piston stroking upward, the lumen portion answering the lower sections of negative pressure shell of magnetic piston is pumping chamber；When answering magnetic descent of piston, the lumen portion answering the negative pressure shell of magnetic piston upper part is squish chamber.Being fixed with exhaust tube at the aspirating hole place of the lower end of negative pressure shell, the other end of exhaust tube is connected with vacuum tank, and the endoporus of exhaust tube communicates with aspirating hole and vacuum tank；Being provided with air outlet valve in the upper end of negative pressure shell, the lower part of air outlet valve is fixed in the centre bore of the overlying one end of negative pressure shell, and the upper surface of negative pressure shell is exposed in the upper end of air outlet valve.

The material of described protecting crust is the material of a kind of type in metal, plastics, nylon, fiberglass or several types；The material of hollow valve body and negative pressure shell adopts the material of a kind of type in metal, plastics, nylon and fiberglass or several types；The material of ball sealer or sealing cone and a kind of type sealed in the material employing metal of cap, plastics, nylon and rubber or several types；The material answering magnetic piston is able to be subject to the material of magnetic field suction；The material of fixing plug is the material of a kind of type in metal, plastics, nylon, fiberglass, rubber or several types；The material that iron core spring adopts is a kind of type in metal and rubber or two kinds of material, and when adopting elastomeric material, iron core spring is the spring of hollow pipe-type, utilizes the elasticity of rubber and contractility to realize the function of spring.

Described protecting crust is the hollow cavity of annular, hollow cavity has string holes, the parts installed are installed in hollow cavity in field controller, solenoid and negative pressure shell and negative pressure shell, or, the parts installed are installed in hollow cavity in electronic remote controller, field controller, solenoid and negative pressure shell and negative pressure shell；String holes is to allow the hole of insulated electric conductor traverse；The inner of the annular housing of hollow cavity is fixed on negative pressure shell.

For the ease of the processing of protecting crust be easy to accessory to load in protecting crust, described protecting crust is the assembly after segmentation, and after the annular position of protecting crust is divided into two parts, recombinant is together.

The inner chamber of described negative pressure shell is circular cylindrical cavity, and the face of cylinder of cylindrical cavity is smooth curved surface；Upper end on the centrage of inner chamber has centre bore to have aspirating hole to superpose the negative pressure shell worn out below the upper and lower side sealing neck and sealing neck with internal taper hole through negative pressure shell, lower end；There is a sealing neck protruding upward at the middle part of the lower end in negative pressure shell, and sealing the upper part of the inside of neck be internal taper hole, lower part is aspirating hole, and when being fitted without ball sealer in internal taper hole or seal cone, internal taper hole communicates with aspirating hole.

Described air outlet valve includes hollow valve body and ball sealer or seals cone, and hollow valve body is hollow pipe, and internal taper hole is in the middle part of the inner chamber of hollow pipe or middle and lower part, and the internal diameter of the upper part of the internal taper hole in hollow pipe internal diameter big, lower sections of is little；There is return-air sealed end the lower end of hollow valve body, the lower surface of return-air sealed end in the lower end of hollow valve body, upper surface be internal taper hole, the big end of internal taper hole communicates with the upper end of air outlet valve, small end communicates with the lower end of air outlet valve, is provided with ball sealer or seals cone on the inner conical surface of internal taper hole；The sealing of inner conical surface and ball sealer or sealing cone can be opened when entering, from the endoporus of hollow valve body lower end, the air having pressure and form passage.

For the ease of the processing of negative pressure shell be easy to accessory to load in negative pressure shell, described negative pressure shell is the assembly after segmentation；The upper end of the cylindrical cavity body portion in negative pressure shell is divided into two-stage nitration, the upper part of segmentation place is pump cover, lower part is the main body of negative pressure shell, centre bore is on pump cover, and aspirating hole is at the middle part of the main body lower end of negative pressure shell, and the body combination of pump cover and negative pressure shell becomes a composite entity；Or, the lower end of the cylindrical cavity body portion in negative pressure shell is divided into two-stage nitration, the lower part of segmentation place is pump cover, upper part is the main body of negative pressure shell, aspirating hole is at the middle part of pump cover, centre bore is at the middle part of the upper end of the main body of negative pressure shell, and the body combination of pump cover and negative pressure shell becomes a composite entity.

Described to answer magnetic piston be cylindrical iron core, and the periphery of cylindrical iron core is smooth periphery, has the annular groove of depression on smooth periphery, and annular groove is embedded with sealing ring；Described periphery coordinate with the inner chamber of negative pressure shell can the inner chamber of sealed negative-pressure shell, and can slide at the interior intracavity of negative pressure shell.There is through hole the cylindrical central portion position of described cylindrical iron core, and through hole communicates with squish chamber and pumping chamber；The upper part of described through hole runs through the upper surface of iron core, lower part runs through iron core lower surface, the lower part of through hole is passage, the upper part of through hole is consent, the sealing neck of annular protruding upward is had in the bottom of consent, the endoporus sealing neck portion is the upper part of passage, sealing the groove having annular between the periphery of neck and the consent sealing neck portion, the groove of annular seals the capped pipe part of cap for holding；The described upper surface sealing neck is smooth annular sealing surface, and the periphery of sealing neck is smooth periphery；It it is consent on passage；Described passage is the via allowing air pass through, and below annular sealing surface, communicates with pumping chamber and consent；Described consent is to install and the fixing hole filled in, and sealing above neck and sealing outside neck, communicates with squish chamber and passage.

Described fixing plug be restriction be arranged on answer in magnetic piston seal on neck seal distance that cap moves up, centre have the plug of passage, described plug to be that centre has the cylinder of through hole or annular ring or card spring coil；When fixing plug is the cylinder that there is through hole centre, the fixing employing interference fit in consent is fixed or threaded engagement is fixed or adopts jump ring to be stuck in the jump-ring slot in consent the two ends of fixed cylinder；When fixing plug is annular ring, the fixing employing interference fit in consent is fixed or adopts jump ring to be stuck in the jump-ring slot in consent the two ends of stationary annular circle；When fixing plug is card spring coil, directly jump ring is stuck in consent.

Described annular sealing surface is the sealing surface of the flat smooth of annular, and annular sealing surface coordinates with the inner sealing surface sealing cap in the upper end sealing neck answering magnetic piston.

Described sealing cap is the circular pipe type cap body that top seals, and it is inner sealing surface that the inner top of sealing cap divides, and the cylindrical parts near inner sealing surface has air passing hole.

Described internal taper hole is tapered circular hole, and the face of circular hole is inner conical surface；The small end of internal taper hole under, hold upper greatly, respectively in the sealing neck of the lower end in the hollow valve body of air outlet valve and in negative pressure shell；Inner conical surface coordinates with the sphere of ball sealer or the male cone (strobilus masculinus) of sealing cone, inner conical surface can be sealed under the effect of ball sealer or the gravity sealing cone self, inner conical surface and ball sealer can be opened by suction at ball sealer or when sealing and have suction above cone or seal the passage that cone seals；Ball sealer or sealing cone air pressure above are more big, and ball sealer or sealing cone are more good with the gluing, sealing effect of inner conical surface.

Described sealing cone is cone or cone cylinder, and the annular surface of cone or cone cylinder is tapered male cone (strobilus masculinus)；Seal and seal inner conical surface by pressing under the gravity of sealing cone self when the male cone (strobilus masculinus) bored seals with inner conical surface.

Described ball sealer is the surface of spherosome or oval ball, spherosome or oval ball is sealing surface, and sealing surface is smooth sphere；Inner conical surface is sealed by pressing under the gravity of ball sealer when the sphere of ball sealer seals with inner conical surface.

Described restriction cap is calotte, and the crown part of calotte has the air passing hole allowing gas pass through, and the hatband part of calotte is fixed on to seal and can limit the ball sealer installed on the inner conical surface sealed in neck on neck or seal the upper distance moved of cone.

Described field controller is to control solenoid to produce the controller of electromagnetic field, to the interval time producing electromagnetic field for the second time more every time after controlling the time of electromagnetic field generation and the time length of generation electromagnetic field and producing electromagnetic field.

In order to prevent robber from stealing automobile easily, making robber not have a vacuum servo when driving a car and stopping stealing garage is adopt installing remote device between teacher position key switch and field controller to be switched on and off producing the power-on circuit of electromagnetic field；Described electronic remote controller is to turn on and cuts off the contactor of field controller, and including the switch sections and the electronic telecontrol part that switch on or off circuit, electronic telecontrol part includes remote controller switch and electronic signal receptor；Remote controller switch is carried with for staff, it is simple to staff handles the normal operation of extracting vacuum brake boost energy-saving electromagnetic device and cuts off the control circuit of extracting vacuum brake boost energy-saving electromagnetic device；Described electronic remote controller can have in the present invention, it is also possible to does not have.

Described exhaust tube is the hollow pipe of aspirating hole and the vacuum tank connecting negative pressure shell.

Described aspirating hole be air enter negative pressure shell inner chamber through air passing hole, lower part in the centre sealing neck, internal taper hole is had on the upper end of the aspirating hole sealed in neck, when being fitted without ball sealer in the internal taper hole sealed in neck or seal cone, internal taper hole communicates with aspirating hole and pumping chamber.

The air extracted in vacuum tank is laid in pumping chamber and is waited to press, and extrudes air generation air pressure at squish intracavity and discharges outside negative pressure shell；When squish intracavity evacuates gas, pumping chamber communicates with squish chamber；When squish intracavity air-out, pumping chamber is by ball sealer or seals cone and answers the internal taper hole sealing in magnetic piston and disconnect the passage bled in entrance squish chamber.

Described extracting vacuum brake boost energy-saving electromagnetic device, in the process evacuating gas, does not have return spring in controlling bleed-off passage and going out the one-way check valve of air duct；When pumping chamber evacuates gas, answer the suction that magnetic piston stroking upward produces open ball sealer or seal cone and the sealing of the internal taper hole sealed in neck in negative pressure shell lower end and open the passage bled, be arranged on answer in magnetic piston seal on neck seal cap under the effect of self gravitation automatic decline return and close the passage bled of entrance squish intracavity and seal；When evacuating gas in squish chamber, it is arranged on the ball sealer on the internal taper hole of air outlet valve or seals cone and utilize the gravity of self make ball sealer or seal and bore automatic decline return and close the passage of the discharge on air outlet valve and seal, answering magnetic descent of piston and making pumping chamber in, to produce pressure and promote to be arranged on and answer sealing in magnetic piston that neck seals the up passage bled then opening entrance squish intracavity of cap；When squish chamber air-out, under the effect of outlet pressure, promote the ball sealer on the internal taper hole of air outlet valve or to seal cone up and open the passage given vent to anger of air outlet valve, be arranged on and answer the cap that seals sealing on neck in magnetic piston to utilize the gravity of self to make sealing cap decline return automatically close and answer the passage bled on magnetic piston to seal.

In order to ensure extracting vacuum brake boost energy-saving electromagnetic device can normal operation, adopt what control field controller with insulated electric conductor teacher position key switch even to connect being switched on and off of circuit；Or, adopt with insulated electric conductor teacher position key switch even and electronic remote controller co-controlling field controller connect being switched on and off of circuit.

Keep the shape of protecting crust to ensure protecting crust that solenoid can be protected without damage, the interior intracavity manufacture at protecting crust has the skeleton of support.

In order to enable the air of the squish intracavity answering magnetic piston to promote in negative pressure shell to enter air outlet valve, adopt iron core spring as promoting the power answering magnetic piston stroking upward.

During use, the power-on circuit of insulated electric conductor and field controller directly connected by teacher of the opening position key switch, or, pressing the starting button of remote controller switch after the power-on circuit of teacher of the opening position key ON electronic remote controller, electronic signal receptor receives and starts the circuit that signal is followed by leading to electronic remote controller with field controller；Field controller is connected the power-on circuit of solenoid and is produced electromagnetic field, the captivation that electromagnetic field produces pulls the pressure answering magnetic piston overpowers iron core spring to move down, when answering magnetic piston to start descending, the ball sealer on the internal taper hole sealed in neck that is arranged in negative pressure shell lower end or seal cone and close the passage bled entering pumping chamber under the effect of the gravity of self, ball sealer in air outlet valve or seal cone under the effect of the gravity of self descending return and seal the inner conical surface of air outlet valve, cut off the outlet passageway in squish chamber；Answer magnetic piston when descending, air that magnetic piston is forced in pumping chamber is answered to make air produce internal pressure, the air having pressure enter into from the passage answered in magnetic piston answer the upper end sealing neck in magnetic piston upwards wash annular sealing surface open with the sealing of the inner sealing surface sealing cap and continue after making the displacement of sealing cap up, after sealing the air passing hole on cap then through the passage in fixing plug after enter squish intracavity.

Answer magnetic descent of piston move to compression iron core spring compression stage spacing time, the power-on circuit of field controller cutoff solenoid, electromagnetic field disappear, answer magnetic piston up under the promotion of iron core spring；When answering magnetic piston to start up, be arranged on answer in magnetic piston seal on neck to seal cap descending and close air and enter the passage bled in squish chamber under the effect of the gravity of self；When answering magnetic piston stroking upward, the up of magnetic piston is answered to make the air of squish intracavity create pressure, there is the air of pressure to promote ball sealer from the internal taper hole that the endoporus of the sealed end of air outlet valve lower end enters in air outlet valve or to seal cone up and open the sealing passage of air outlet valve, make the air of squish intracavity enter in air after air outlet valve；Answer magnetic piston when up, magnetic piston is answered also to make to create in pumping chamber pull of vacuum, pull of vacuum is inhaled to move the ball sealer being arranged on the internal taper hole sealed in neck or seal cone and is separated with internal taper hole, air in vacuum tank enters into internal taper hole from exhaust tube through aspirating hole, enters answering in the pumping chamber below magnetic piston in negative pressure shell then through the air passing hole on restriction cap.

Answer magnetic piston up when putting in place under the promotion of iron core spring, the ball sealer on the internal taper hole sealed in neck that is arranged in negative pressure shell lower end or seal cone and close the passage bled entering pumping chamber under the effect of the gravity of self, ball sealer in air outlet valve or seal cone under the effect of the gravity of self descending return and seal the inner conical surface of air outlet valve, cut off the outlet passageway in squish chamber and made air not return pumping chamber；Now, field controller is connected again the power-on circuit of solenoid and is again produced electromagnetic field and make to answer magnetic descent of piston；What so circulate is switched on and off circuit, makes solenoid generation electromagnetic field pull and answers magnetic piston stroking upward and allow the promotion of iron core spring answer magnetic descent of piston, constantly the air in vacuum tank is extracted out and enter in air.

A kind of manufacture method of extracting vacuum brake boost energy-saving electromagnetic device, it is characterised in that:

During fabrication, protecting crust adopts the material manufacture of a kind of type in metal, plastics, nylon, fiberglass or several types；Hollow valve body and negative pressure shell adopt the material manufacture of a kind of type in metal, plastics, nylon and fiberglass or several types；The material manufacture of ball sealer or sealing cone and a kind of type sealed in cap employing metal, plastics, nylon and rubber or several types；Magnetic piston is answered to adopt the material manufacture of the hard to bear magnetic field suction of energy；Fixing plug adopts the material manufacture of a kind of type in metal, plastics, nylon, fiberglass, rubber or several types；Iron core spring adopts a kind of type in metal and rubber or two kinds of material manufacture, and when adopting elastomeric material to manufacture, iron core spring creates hollow tubular type spring, utilizes the elasticity of rubber and contractility to realize the function of spring.

Protecting crust creates the hollow cavity of annular, and hollow cavity manufactures to be had string holes, string holes to create to allow the hole of insulated electric conductor traverse；The parts installed are installed in hollow cavity in field controller, solenoid and negative pressure shell and negative pressure shell, or, the parts installed are installed in hollow cavity in electronic remote controller, field controller, solenoid and negative pressure shell and negative pressure shell；The inner of the annular housing of hollow cavity is fixed on negative pressure shell.

In order to convenient for assembly, during fabrication, after protecting crust is divided into two parts manufacture from annular position, recombinant is together for protecting crust.

The inner chamber of negative pressure shell creates the cavity of cylinder, and the periphery of cylindrical cavity creates smooth curved surface；Upper end on the centrage of inner chamber manufactures to have has aspirating hole and internal taper hole through the centre bore of negative pressure shell, lower end manufacture, and aspirating hole superposes with internal taper hole to be worn out the upper and lower side sealing neck and seals the negative pressure shell below neck；The middle part of the lower end in negative pressure shell manufactures sealing neck protruding upward, and the upper part sealing the inside of neck creates internal taper hole, lower part creates aspirating hole, and internal taper hole communicates with aspirating hole, and internal taper hole coordinates with ball sealer or sealing cone.

Air outlet valve creates hollow valve body and ball sealer or seals cone two parts, hollow valve body creates hollow pipe, internal taper hole manufacture is in the middle part of the inner chamber of hollow pipe or middle and lower part, and the internal diameter that the internal diameter that the upper part of the internal taper hole in hollow pipe manufactures is big, lower part manufactures is little；The lower end of hollow valve body manufactures return-air sealed end, the lower surface of return-air sealed end manufactures and creates internal taper hole in the lower end of hollow valve body, upper surface, the big end of internal taper hole communicates with the upper end of air outlet valve, small end communicates with the lower end of air outlet valve, is provided with ball sealer or seals cone on the inner conical surface of internal taper hole；The sealing of inner conical surface and ball sealer or sealing cone can be opened when entering, from the endoporus of hollow valve body lower end, the air having pressure and form passage.

For the ease of the processing of negative pressure shell be easy to accessory to load in negative pressure shell, described negative pressure shell creates the assembly after segmental machining manufactures；The upper end of the cylindrical cavity body portion in negative pressure shell is divided into two-stage nitration manufacture, the upper part of segmentation place creates pump cover, lower part creates the main body of negative pressure shell, centre bore manufactures on pump cover, aspirating hole manufactures at the middle part of the main body lower end of negative pressure shell, and it is a composite entity that pump cover and the main body after negative pressure shell are combined into after manufacturing；Or, the lower end of the cylindrical cavity body portion in negative pressure shell is divided into two-stage nitration manufacture, the lower part of segmentation place creates pump cover, upper part creates the main body of negative pressure shell, aspirating hole manufactures at the middle part of pump cover, it is a composite entity that centre bore manufacture is combined into after the main body of the middle part of the upper end of the main body of negative pressure shell, pump cover and negative pressure shell manufactures.

Answering magnetic piston to create the iron core of cylinder, the periphery of cylindrical iron core creates smooth periphery, manufactures the annular groove having depression on smooth periphery, and annular groove is embedded with sealing ring；Described periphery coordinate with the inner chamber of negative pressure shell can the inner chamber of sealed negative-pressure shell, and can slide at the interior intracavity of negative pressure shell.The cylindrical central portion position of described cylindrical iron core manufactures through hole, and through hole communicates with squish chamber and pumping chamber；Described through hole creates that upper part runs through the upper surface of iron core, lower part runs through iron core lower surface, the lower part of through hole creates passage, the upper part of through hole creates consent, the sealing neck having annular protruding upward is manufactured in the bottom of consent, the endoporus sealing neck portion creates the upper part of passage, manufacturing, sealing, the groove having annular between the outer ring surface of neck and the consent sealing neck portion, the groove of annular seals the capped pipe part of cap for holding；The described upper surface sealing neck creates smooth annular sealing surface, and the periphery sealing neck creates smooth periphery.Manufactured above at passage has consent；Described passage creates the via allowing air pass through, and manufactures below annular sealing surface, communicates with pumping chamber and consent；Described consent creates to be installed and the fixing hole filled in, and manufactures sealing above neck and sealing outside neck, communicates with squish chamber and passage.

Fixing plug creates centre to be had the plug of passage, described plug to create centre to have the cylinder of through hole or annular ring or card spring coil, it is possible to restriction is arranged on answers sealing in magnetic piston to seal, on neck, the distance that cap moves up；When fixing plug creates the cylinder that there is through hole centre, the fixing employing interference fit in consent is fixed or threaded engagement is fixed or adopts jump ring to be stuck in the jump-ring slot in consent the two ends of fixed cylinder；When fixing plug creates annular ring, the fixing employing interference fit in consent is fixed or adopts jump ring to be stuck in the jump-ring slot in consent the two ends of stationary annular circle；When fixing plug creates card spring coil, directly jump ring is stuck in consent.

Described annular sealing surface creates the sealing surface of the flat smooth of annular, manufactures the upper end sealing neck answering magnetic piston and coordinates with the inner sealing surface sealing cap.

The described cap that seals creates the circular pipe type cap body that top seals, and seals the inner top of cap and divides and create inner sealing surface, and the cylindrical parts manufacture near inner sealing surface has air passing hole.

Described internal taper hole creates tapered circular hole, and the face of circular hole creates inner conical surface；The small end of internal taper hole under, hold upper greatly, in the sealing neck of the lower end manufacturing respectively in the hollow valve body of air outlet valve and manufacturing in negative pressure shell；Inner conical surface can be sealed under the effect of ball sealer or the gravity sealing cone self, inner conical surface and ball sealer can be opened by suction at ball sealer or when sealing and have suction above cone or seal the passage that cone seals；Ball sealer or sealing cone air pressure above are more big, and ball sealer or sealing cone are more good with the gluing, sealing effect of inner conical surface.

Sealing cone and create cone or cone cylinder, the annular surface of cone or cone cylinder creates tapered male cone (strobilus masculinus)；Seal and seal inner conical surface by pressing under the gravity of sealing cone self when the male cone (strobilus masculinus) bored seals with inner conical surface.

Ball sealer creates the surface of spherosome or oval ball, spherosome or oval ball and creates sealing surface, and sealing surface creates smooth sphere；Inner conical surface is sealed by pressing under the self gravitation of ball sealer when the sphere of ball sealer seals with inner conical surface.

Restriction cap creates calotte, and the crown part of calotte manufactures the air passing hole allowing gas pass through, and the hatband part of calotte is fixed on to seal and can limit the ball sealer installed on the inner conical surface sealed in neck on neck or seal the upper distance moved of cone.

Field controller creates and controls solenoid and produce the controller of electromagnetic field, to the interval time producing electromagnetic field for the second time again after controlling time and the length producing the electromagnetic field time that electromagnetic field produces and every time producing electromagnetic field.

In order to prevent robber from stealing automobile easily, making robber not have a vacuum servo when driving a car and stopping stealing garage is adopt installing remote device between teacher position key switch and field controller to be switched on and off producing the power-on circuit of electromagnetic field；Described electronic remote controller creates the contactor being switched on and off field controller, and including the switch sections and the electronic telecontrol part that switch on or off circuit, electronic telecontrol part includes remote controller switch and electronic signal receptor；Described electronic remote controller can have in the present invention, it is also possible to does not have.

Exhaust tube creates the hollow pipe of aspirating hole and the vacuum tank connecting negative pressure shell.

Aspirating hole create air enter negative pressure shell inner chamber through via, manufacture the lower part in the centre sealing neck, the manufactured above of upper end at the aspirating hole sealed in neck has internal taper hole, when being fitted without ball sealer in the internal taper hole sealed in neck or seal cone, internal taper hole communicates with aspirating hole and pumping chamber.

Being provided with solenoid in protecting crust, solenoid is fixed on the lower part outside negative pressure shell, and protecting crust is fixed on the lower sections of outside protection solenoid of negative pressure shell；Below the outside of protecting crust, one side is fixed with foot rest, and the lower end of foot rest protects exhaust tube not oppressed lower than negative pressure shell lower end, and the lower end of foot rest is fixed on the vehicle frame of automobile.The circuit connecting solenoid is connected with field controller, the circuit of field controller is connected with electronic remote controller, electronic remote controller is connected with insulated electric conductor, and the electronic signal receptor of field controller, electronic remote controller and electronic remote controller is arranged in protecting crust；Or, the circuit connecting solenoid is connected with field controller, and the circuit of field controller is connected with insulated electric conductor, and field controller is arranged in protecting crust.Restriction cap, ball sealer are installed in negative pressure shell or seal cone, iron core spring, answer magnetic piston, seal cap, fix plug, magnetic piston is answered to be arranged on the upper part of inner chamber of negative pressure shell, iron core spring is arranged on the lower part of the inner chamber of negative pressure shell, the lower end of iron core spring is pressed in the lower end in negative pressure shell, top, upper end and is pressed in the bottom answering magnetic piston, answers magnetic piston can slide up and down at the interior intracavity of negative pressure shell；The lower sections of sealing neck answering the consent in magnetic piston is provided with sealing cap, the capped pipe part sealing cap can slide up and down on the periphery sealing neck, being provided with in consent and fix the sliding distance filled in when limiting sealing cap upward sliding, the fixing plug fixing employing interference fit in consent is fixed or threaded engagement is fixed or adopts jump ring to be stuck in the jump-ring slot in consent fixes the two ends filled in；The inner sealing surface that the inner top of sealing cap divides can close the passage bled answered on magnetic piston when coordinating with annular sealing surface and seal, the inner sealing surface that the inner top of sealing cap divides can open, when separating with annular sealing surface, the passage bled answered on magnetic piston；Being provided with ball sealer in the internal taper hole sealed in neck of the lower end in negative pressure shell or seal cone, restriction cap is fixed on the outside sealing neck by screw thread or jump ring；Ball sealer or sealing cone and the internal taper hole sealed in neck coordinate and can seal or open the passage bled in entrance negative pressure shell；When answering magnetic piston stroking upward, the lumen portion answering the lower sections of negative pressure shell of magnetic piston is pumping chamber；When answering magnetic descent of piston, the lumen portion answering the negative pressure shell of magnetic piston upper part is squish chamber.Being fixed with exhaust tube at the aspirating hole place of the lower end of negative pressure shell, the other end of exhaust tube is connected with vacuum tank, and the endoporus of exhaust tube communicates with aspirating hole and vacuum tank；Being provided with air outlet valve in the upper end of negative pressure shell, the lower part of air outlet valve is fixed in the centre bore of the overlying one end of negative pressure shell, and the upper surface of negative pressure shell is exposed in the upper end of air outlet valve.

The compact conformation of extracting vacuum brake boost energy-saving electromagnetic device of the present invention, vibrate little, utilization rate of electrical is high, powerful, the electric automobile and the internal-combustion engines vehicle that are suitable for vacuum servo formula hydraulic braking are installed and used, and also are able to produce vacuum normally and realize vacuum servo after internal combustion engine shuts down；The market prospect of industrialization is good, commercial value is high, manufactures and uses all very convenient.

Accompanying drawing explanation

Fig. 1 and Fig. 2 is the structural representation of extracting vacuum brake boost energy-saving electromagnetic device；

Fig. 3 is the structural representation answering magnetic piston；

Fig. 4 is the schematic appearance of the top view answering magnetic piston；

Shown in figure: protecting crust 1, foot rest 2, exhaust tube 3, negative pressure shell 4, hollow valve body 5, iron core spring 6, answer magnetic piston 7, ball sealer 8 or seal cone 8, fixing plug 10, restriction cap 11, air passing hole 12, solenoid 13, seal cap 14, passage 16, annular sealing surface 17, consent 18.

Detailed description of the invention

Extracting vacuum brake boost energy-saving electromagnetic device of the present invention mainly includes protecting crust 1, solenoid 13, negative pressure shell 4, aspirating hole, ball sealer 8 or seals cone 8, seals cap 14, limits cap 11, iron core spring 6, answers magnetic piston 7, fixing plug 10, internal taper hole, passage 16, air outlet valve, exhaust tube 3, field controller, electronic remote controller；Or, including protecting crust 1, solenoid 13, negative pressure shell 4, aspirating hole, ball sealer 8 or sealing cone 8, sealing cap 14, restriction cap 11, iron core spring 6, answer magnetic piston 7, fixing plug 10, internal taper hole, passage 16, air outlet valve, exhaust tube 3, field controller.

Being provided with solenoid 13 in protecting crust 1, solenoid 13 is fixed on the lower part outside negative pressure shell 4, and protecting crust 1 is fixed on the lower sections of outside protection solenoid 13 of negative pressure shell 4；Below the outside of protecting crust 1, one side is fixed with foot rest 2, and the lower end of foot rest 2 protects exhaust tube 3 not oppressed lower than negative pressure shell 4 lower end, and the lower end of foot rest 2 is fixed on the vehicle frame of automobile.

The circuit connecting solenoid 13 is connected with field controller, the circuit of field controller is connected with electronic remote controller, electronic remote controller is connected with insulated electric conductor, and the electronic signal receptor of field controller, electronic remote controller and electronic remote controller is arranged in protecting crust 1；Or, the circuit connecting solenoid 13 is connected with field controller, and the circuit of field controller is connected with insulated electric conductor, and field controller is arranged in protecting crust 1.

Restriction cap 11, ball sealer 8 are installed in negative pressure shell 4 or seal cone 8, iron core spring 6, answer magnetic piston 7, seal cap 14, fix plug 10, magnetic piston 7 is answered to be arranged on the upper part of inner chamber of negative pressure shell 4, iron core spring 6 is arranged on the lower part of the inner chamber of negative pressure shell 4, the lower end of iron core spring 6 is pressed in the lower end in negative pressure shell 4, top, upper end and is pressed in the bottom answering magnetic piston 7, answers magnetic piston 7 can slide up and down at the interior intracavity of negative pressure shell 4；The lower sections of sealing neck of the consent 18 answered in magnetic piston 7 is provided with sealing cap 14, the capped pipe part sealing cap 14 can slide up and down on the periphery sealing neck, being provided with fixing plug 10 in consent 18 and limit sliding distance when sealing cap 14 upward sliding, the fixing plug 10 fixing employing interference fit in consent 18 are fixed or threaded engagement is fixed or adopt the two ends that jump ring is stuck in the jump-ring slot in consent 18 fixing plug 10；The inner sealing surface that the inner top of sealing cap 14 divides can close the passage bled answered on magnetic piston 7 when coordinating with annular sealing surface 17 and seal, the inner sealing surface that the inner top of sealing cap 14 divides can open, when separating with annular sealing surface 17, the passage bled answered on magnetic piston 7；Being provided with ball sealer 8 in the internal taper hole sealed in neck of the lower end in negative pressure shell 4 or seal cone 8, restriction cap 11 is fixed on the outside sealing neck by screw thread or jump ring；Ball sealer 8 or sealing cone 8 coordinate with the internal taper hole sealed in neck and can seal or open the passage bled in entrance negative pressure shell 4；When answering magnetic piston 7 up, the lumen portion answering the lower sections of negative pressure shell 4 of magnetic piston 7 is pumping chamber；When answering magnetic piston 7 descending, the lumen portion answering the negative pressure shell 4 of magnetic piston 7 upper part is squish chamber.Being fixed with exhaust tube 3 at the aspirating hole place of the lower end of negative pressure shell 4, the other end of exhaust tube 3 is connected with vacuum tank, and the endoporus of exhaust tube 3 communicates with aspirating hole and vacuum tank；Being provided with air outlet valve in the upper end of negative pressure shell 4, the lower part of air outlet valve is fixed in the centre bore of the overlying one end of negative pressure shell 4, and the upper surface of negative pressure shell 4 is exposed in the upper end of air outlet valve.

During fabrication, protecting crust 1 adopts the material manufacture of a kind of type in metal, plastics, nylon, fiberglass, rubber or several types, when protecting crust 1 when adopting elastomeric material to manufacture or after manufacture shaping is soft-shell, it is made to float on gas face first in use the inner chamber inflation of protecting crust 1；Hollow valve body 5 and negative pressure shell 4 adopt the material manufacture of a kind of type in metal, plastics, nylon and fiberglass or several types；Ball sealer 8 or sealing cone 8 and sealing cap 14 adopt the material manufacture of a kind of type in metal, plastics, nylon and rubber or several types；Magnetic piston 7 is answered to adopt the material manufacture of the hard to bear magnetic field suction of energy；Fixing plug 10 adopts the material manufacture of a kind of type in metal, plastics, nylon, fiberglass, rubber or several types；Iron core spring 6 adopts a kind of type in metal and rubber or two kinds of material manufacture, and when adopting elastomeric material to manufacture, iron core spring 6 creates hollow tubular type spring, utilizes the elasticity of rubber and contractility to realize the function of spring.

Protecting crust 1 creates the hollow cavity of annular, and hollow cavity manufactures to be had string holes, string holes to create to allow the hole of insulated electric conductor traverse；The parts installed are installed in hollow cavity in field controller, solenoid 13 and negative pressure shell 4 and negative pressure shell 4, or, the parts installed are installed in hollow cavity in electronic remote controller, field controller, solenoid 13 and negative pressure shell 4 and negative pressure shell 4；The inner of the annular housing of hollow cavity is fixed on negative pressure shell 4.

In order to convenient for assembly, during fabrication, after protecting crust 1 is divided into two parts manufacture from annular position, recombinant is together for protecting crust 1.

The inner chamber of negative pressure shell 4 creates the cavity of cylinder, and the periphery of cylindrical cavity creates smooth curved surface；Upper end on the centrage of inner chamber manufactures to have has aspirating hole and internal taper hole through the centre bore of negative pressure shell 4, lower end manufacture, and aspirating hole superposes with internal taper hole to be worn out the upper and lower side sealing neck and seals the negative pressure shell 4 below neck；The middle part of the lower end in negative pressure shell 4 manufactures sealing neck protruding upward, and the upper part sealing the inside of neck creates internal taper hole, lower part creates aspirating hole, and internal taper hole communicates with aspirating hole, and internal taper hole coordinates with ball sealer 8 or sealing cone 8.

Air outlet valve creates hollow valve body 5 and ball sealer 8 or seals cone 8 two parts, hollow valve body 5 creates hollow pipe, internal taper hole manufacture is in the middle part of the inner chamber of hollow pipe or middle and lower part, and the internal diameter that the internal diameter that the upper part of the internal taper hole in hollow pipe manufactures is big, lower part manufactures is little；The lower end of hollow valve body 5 manufactures return-air sealed end, the lower surface of return-air sealed end manufactures and creates internal taper hole in the lower end of hollow valve body 5, upper surface, the big end of internal taper hole communicates with the upper end of air outlet valve, small end communicates with the lower end of air outlet valve, is provided with ball sealer 8 or seals cone 8 on the inner conical surface of internal taper hole；The sealing of inner conical surface and ball sealer 8 or sealing cone 8 can be opened when entering, from the endoporus of hollow valve body 5 lower end, the air having pressure and form passage.

For the ease of the processing of negative pressure shell 4 be easy to accessory to load in negative pressure shell 4, described negative pressure shell 4 creates the assembly after segmental machining manufactures；The upper end of the cylindrical cavity body portion in negative pressure shell 4 is divided into two-stage nitration manufacture, the upper part of segmentation place creates pump cover, lower part creates the main body of negative pressure shell 4, centre bore manufactures on pump cover, aspirating hole manufactures at the middle part of the main body lower end of negative pressure shell 4, and it is a composite entity that pump cover and the main body after negative pressure shell 4 are combined into after manufacturing；Or, the lower end of the cylindrical cavity body portion in negative pressure shell 4 is divided into two-stage nitration manufacture, the lower part of segmentation place creates pump cover, upper part creates the main body of negative pressure shell 4, aspirating hole manufactures at the middle part of pump cover, it is a composite entity that centre bore manufacture is combined into after the main body of the middle part of the upper end of the main body of negative pressure shell 4, pump cover and negative pressure shell 4 manufactures.

Answering magnetic piston 7 to create the iron core of cylinder, the periphery of cylindrical iron core creates smooth periphery, manufactures the annular groove having depression on smooth periphery, and annular groove is embedded with sealing ring；Described periphery coordinate with the inner chamber of negative pressure shell 4 can the inner chamber of sealed negative-pressure shell 4, and can slide at the interior intracavity of negative pressure shell 4.The cylindrical central portion position of described cylindrical iron core manufactures through hole, and through hole communicates with squish chamber and pumping chamber；Described through hole creates that upper part runs through the upper surface of iron core, lower part runs through iron core lower surface, the lower part of through hole creates passage 16, the upper part of through hole creates consent 18, the sealing neck having annular protruding upward is manufactured in the bottom of consent 18, the endoporus sealing neck portion creates the upper part of passage 16, manufacturing, sealing, the groove having annular between the outer ring surface of neck and the consent 18 sealing neck portion, the groove of annular seals the capped pipe part of cap 14 for holding；The described upper surface sealing neck creates smooth annular sealing surface 17, and the periphery sealing neck creates smooth periphery.Manufactured above at passage 16 has consent 18；Described passage 16 creates the via allowing air pass through, and manufactures below annular sealing surface 17, communicates with pumping chamber and consent 18；Described consent 18 creates installation and the hole of fixing plug 10, manufactures on sealing neck and seals outside neck, communicating with squish chamber and passage 16.

Fixing plug 10 creates centre to be had the plug of passage 16, described plug to create centre to have the cylinder of through hole or annular ring or card spring coil, it is possible to restriction is arranged on answers sealing in magnetic piston 7 to seal, on neck, the distance that cap 14 moves up；When fixing plug 10 creates the cylinder that there is through hole centre, the fixing employing interference fit in consent 18 is fixed or threaded engagement is fixed or adopts jump ring to be stuck in the jump-ring slot in consent 18 two ends of fixed cylinder；When fixing plug 10 creates annular ring, the two ends that the fixing employing interference fit in consent 18 is fixed or adopted jump ring to be stuck in the jump-ring slot in consent 18 stationary annular circle；When fixing plug 10 creates card spring coil, directly jump ring is stuck in consent 18.

Described annular sealing surface 17 creates the sealing surface of the flat smooth of annular, manufactures the upper end sealing neck answering magnetic piston 7 and coordinates with the inner sealing surface sealing cap 14.

The described cap 14 that seals creates the circular pipe type cap body that top seals, and seals the inner top of cap 14 and divides and create inner sealing surface, and the cylindrical parts manufacture near inner sealing surface has air passing hole 12.

Described internal taper hole creates tapered circular hole, and the face of circular hole creates inner conical surface；The small end of internal taper hole under, hold upper greatly, in the sealing neck of the lower end manufacturing respectively in the hollow valve body 5 of air outlet valve and manufacturing in negative pressure shell 4；Inner conical surface can be sealed under the effect of ball sealer 8 or the gravity sealing cone 8 self, inner conical surface and ball sealer 8 or the passages sealing cone 8 sealing can be opened at ball sealer 8 or when sealing and have suction above cone 8 by suction；Ball sealer 8 or sealing cone 8 air pressure above are more big, and the gluing, sealing effect of ball sealer 8 or sealing cone 8 and inner conical surface is more good.

Sealing cone 8 and create cone or cone cylinder, the annular surface of cone or cone cylinder creates tapered male cone (strobilus masculinus)；Seal and seal inner conical surface by pressing under the gravity of sealing cone 8 self when the male cone (strobilus masculinus) boring 8 seals with inner conical surface.

Ball sealer 8 creates the surface of spherosome or oval ball, spherosome or oval ball and creates sealing surface, and sealing surface creates smooth sphere；Inner conical surface is sealed by pressing under the self gravitation of ball sealer 8 when the sphere of ball sealer 8 seals with inner conical surface.

Restriction cap 11 creates calotte, and the crown part of calotte manufactures the air passing hole 12 allowing gas pass through, and the hatband part of calotte is fixed on to seal and can limit the ball sealer 8 installed on the inner conical surface sealed in neck on neck or seal the distance moved on cone 8.

Field controller creates and controls solenoid 13 and produce the controller of electromagnetic field, to the interval time producing electromagnetic field for the second time more every time after controlling time and the length producing the electromagnetic field time that electromagnetic field produces and producing electromagnetic field.

Exhaust tube 3 creates the hollow pipe of aspirating hole and the vacuum tank connecting negative pressure shell 4.

Aspirating hole create air enter negative pressure shell 4 inner chamber through via, manufacture the lower part in the centre sealing neck, the manufactured above of upper end at the aspirating hole sealed in neck has internal taper hole, when being fitted without ball sealer 8 in the internal taper hole sealed in neck or seal cone 8, internal taper hole communicates with aspirating hole and pumping chamber.

Keep the shape of protecting crust 1 to ensure protecting crust 1 that solenoid 13 can be protected without damage, the interior intracavity manufacture at protecting crust 1 has the skeleton of support.

In order to make the air of the squish intracavity answering magnetic piston 7 can promote in negative pressure shell 4 enter air outlet valve, adopt iron core spring 6 as promoting the power answering magnetic piston 7 up.

The air extracted in vacuum tank is laid in pumping chamber and is waited to press, and extrudes air generation air pressure at squish intracavity and discharges outside negative pressure shell；When squish intracavity evacuates gas, pumping chamber communicates with squish chamber；When squish intracavity air-out, pumping chamber is by ball sealer 8 or seals cone 8 and seals with the internal taper hole answered in magnetic piston 7 and disconnect the passage bled that enters squish chamber.

Described extracting vacuum brake boost energy-saving electromagnetic device, in the process evacuating gas, does not have return spring in controlling bleed-off passage and going out the one-way check valve of air duct；When pumping chamber evacuates gas, the suction answering the up generation of magnetic piston 7 is opened ball sealer 8 or seals cone 8 and the sealing of the internal taper hole sealed in neck in negative pressure shell 4 lower end and open the passage bled, be arranged on answer in magnetic piston 7 seal on neck seal cap 14 under the effect of self gravitation automatic decline return and close the passage bled of entrance squish intracavity and seal；When evacuating gas in squish chamber, it is arranged on the ball sealer 8 on the internal taper hole of air outlet valve or seals cone 8 and utilize the gravity of self make ball sealer 8 or seal cone 8 automatic decline returns and close the passage of the discharge on air outlet valve and seal, answering magnetic piston 7 descending and make to produce pumping chamber in pressure and promote and be arranged on the up passage bled then opening entrance squish intracavity of sealing cap 14 sealed on neck answered in magnetic piston 7；When squish chamber air-out, under the effect of outlet pressure, promote the ball sealer 8 on the internal taper hole of air outlet valve or to seal cone 8 up and open the passage given vent to anger of air outlet valve, be arranged on and answer the cap 14 that seals sealing on neck in magnetic piston 7 to utilize the gravity of self to make sealing cap 14 decline return automatically close and answer the passage bled on magnetic piston 7 to seal.

During use, the power-on circuit of insulated electric conductor and field controller directly connected by teacher of the opening position key switch, or, pressing the starting button of remote controller switch after the power-on circuit of teacher of the opening position key ON electronic remote controller, electronic signal receptor receives and starts the circuit that signal is followed by leading to electronic remote controller with field controller；Field controller is connected the power-on circuit of solenoid 13 and is produced electromagnetic field, the captivation that electromagnetic field produces pulls answers magnetic piston 7 to overcome the pressure of iron core spring 6 to move down, when answering magnetic piston 7 to start descending, the ball sealer 8 on the internal taper hole sealed in neck that is arranged in negative pressure shell 4 lower end or seal cone 8 and close the passages bled entering pumping chamber under the effect of the gravity of self, ball sealer 8 in air outlet valve or seal cone 8 under the effect of the gravity of self descending return and seal the inner conical surface of air outlet valve, cut off the outlet passageway in squish chamber；Answer magnetic piston 7 when descending, air that magnetic piston 7 is forced in pumping chamber is answered to make air produce internal pressure, the air having pressure enter into from the passage 16 answered in magnetic piston 7 answer the upper end sealing neck in magnetic piston 7 upwards wash annular sealing surface 17 open with the sealing of the inner sealing surface sealing cap 14 and continue after making sealing cap 14 displacement up, after sealing the air passing hole 12 on cap 14 then through the passage 16 in fixing plug 10 after enter squish intracavity.

Answer magnetic piston 7 descending move to compression iron core spring 6 compression stage spacing time, the power-on circuit of field controller cutoff solenoid 13, electromagnetic field disappear, answer magnetic piston 7 up under the promotion of iron core spring 6；When answering magnetic piston 7 to start up, be arranged on answer in magnetic piston 7 seal on neck to seal cap 14 descending and close air and enter the passage bled in squish chamber under the effect of the gravity of self；When answering magnetic piston 7 up, the up of magnetic piston 7 is answered to make the air of squish intracavity create pressure, there is the air of pressure to promote ball sealer 8 from the internal taper hole that the endoporus of the sealed end of air outlet valve lower end enters in air outlet valve or to seal cone 8 up and open the sealing passage of air outlet valve, make the air of squish intracavity enter in air after air outlet valve；Answer magnetic piston 7 when up, magnetic piston 7 is answered also to make to create in pumping chamber pull of vacuum, pull of vacuum is inhaled to move the ball sealer 8 being arranged on the internal taper hole sealed in neck or seal cone 8 and is separated with internal taper hole, air in vacuum tank enters into internal taper hole from exhaust tube 3 through aspirating hole, enters answering in magnetic piston 7 pumping chamber below in negative pressure shell 4 then through the air passing hole 12 on restriction cap 11.

Answer magnetic piston 7 up when putting in place under the promotion of iron core spring 6, the ball sealer 8 on the internal taper hole sealed in neck that is arranged in negative pressure shell 4 lower end or seal cone 8 and close the passages bled entering pumping chamber under the effect of the gravity of self, ball sealer 8 in air outlet valve or seal cone 8 under the effect of the gravity of self descending return and seal the inner conical surface of air outlet valve, cut off the outlet passageway in squish chamber and made air not return pumping chamber；Now, field controller is connected again the power-on circuit of solenoid 13 and is again produced electromagnetic field and make to answer magnetic piston 7 descending；So circulation be switched on and off circuit, make solenoid 13 produce electromagnetic field and pull to answer magnetic piston 7 up and allow iron core spring 6 promote and answer magnetic piston 7 descending, constantly the air in vacuum tank is extracted out and enter in air.

Claims

1. an extracting vacuum brake boost energy-saving electromagnetic device, it is characterised in that: described extracting vacuum brake boost energy-saving electromagnetic device includes protecting crust, solenoid, negative pressure shell, aspirating hole, sealing cone, seals cap, restriction cap, iron core spring, answers magnetic piston, fixing plug, internal taper hole, passage, air outlet valve, exhaust tube, field controller；

Being provided with solenoid in protecting crust, solenoid is fixed on the lower part outside negative pressure shell, and protecting crust is fixed on the lower sections of outside protection solenoid of negative pressure shell；Below the outside of protecting crust, one side is fixed with foot rest, and the lower end of foot rest protects exhaust tube not oppressed lower than negative pressure shell lower end, and the lower end of foot rest is fixed on the vehicle frame of automobile；

The circuit connecting solenoid is connected with field controller, and the circuit of field controller is connected with insulated electric conductor, and field controller is arranged in protecting crust；

Restriction cap is installed in negative pressure shell, seals cone, iron core spring, answers magnetic piston, seals cap, fixes plug, magnetic piston is answered to be arranged on the upper part of inner chamber of negative pressure shell, iron core spring is arranged on the lower part of the inner chamber of negative pressure shell, the lower end of iron core spring is pressed in the lower end in negative pressure shell, top, upper end and is pressed in the bottom answering magnetic piston, answers magnetic piston can slide up and down at the interior intracavity of negative pressure shell；The lower sections of sealing neck answering the consent in magnetic piston is provided with sealing cap, the capped pipe part sealing cap can slide up and down on the periphery sealing neck, being provided with in consent and fix the sliding distance filled in when limiting sealing cap upward sliding, the fixing plug fixing employing interference fit in consent is fixed or threaded engagement is fixed or adopts jump ring to be stuck in the jump-ring slot in consent fixes the two ends filled in；The inner sealing surface that the inner top of sealing cap divides can close the passage bled answered on magnetic piston when coordinating with annular sealing surface and seal, the inner sealing surface that the inner top of sealing cap divides can open, when separating with annular sealing surface, the passage bled answered on magnetic piston；Being provided with sealing cone in the internal taper hole sealed in neck of the lower end in negative pressure shell, restriction cap is fixed on the outside sealing neck by screw thread or jump ring；Seal cone to coordinate with the internal taper hole sealed in neck and can seal or open the passage bled in entrance negative pressure shell；When answering magnetic piston stroking upward, the lumen portion answering the lower sections of negative pressure shell of magnetic piston is pumping chamber；When answering magnetic descent of piston, the lumen portion answering the negative pressure shell of magnetic piston upper part is squish chamber；Being fixed with exhaust tube at the aspirating hole place of the lower end of negative pressure shell, the other end of exhaust tube is connected with vacuum tank, and the endoporus of exhaust tube communicates with aspirating hole and vacuum tank；Being provided with air outlet valve in the upper end of negative pressure shell, the lower part of air outlet valve is fixed in the centre bore of the overlying one end of negative pressure shell, and the upper surface of negative pressure shell is exposed in the upper end of air outlet valve；

Described protecting crust is the hollow cavity of annular, and hollow cavity has string holes, is provided with in field controller, solenoid and negative pressure shell and negative pressure shell the parts installed in hollow cavity, and string holes is to allow the hole of insulated electric conductor traverse；The inner of the annular housing of hollow cavity is fixed on negative pressure shell；

For the ease of the processing of protecting crust be easy to accessory to load in protecting crust, described protecting crust is the assembly after segmentation, and after the annular position of protecting crust is divided into two parts, recombinant is together；

The inner chamber of described negative pressure shell is circular cylindrical cavity, and the face of cylinder of cylindrical cavity is smooth curved surface；Upper end on the centrage of inner chamber has centre bore to have aspirating hole to superpose the negative pressure shell worn out below the upper and lower side sealing neck and sealing neck with internal taper hole through negative pressure shell, lower end；There is a sealing neck protruding upward at the middle part of the lower end in negative pressure shell, and sealing the upper part of the inside of neck be internal taper hole, lower part is aspirating hole, and when being fitted without sealing cone in internal taper hole, internal taper hole communicates with aspirating hole；

Described air outlet valve includes hollow valve body and seals cone, and hollow valve body is hollow pipe, and internal taper hole is in the middle part of the inner chamber of hollow pipe or middle and lower part, and the internal diameter of the upper part of the internal taper hole in hollow pipe internal diameter big, lower sections of is little；There is return-air sealed end the lower end of hollow valve body, the lower surface of return-air sealed end in the lower end of hollow valve body, upper surface be internal taper hole, the big end of internal taper hole communicates with the upper end of air outlet valve, small end communicates with the lower end of air outlet valve, is provided with sealing cone on the inner conical surface of internal taper hole；Inner conical surface can be opened when entering, from the endoporus of hollow valve body lower end, the air having pressure and form passage with sealing the sealing bored；

For the ease of the processing of negative pressure shell be easy to accessory to load in negative pressure shell, described negative pressure shell is the assembly after segmentation；The upper end of the cylindrical cavity body portion in negative pressure shell is divided into two-stage nitration, the upper part of segmentation place is pump cover, lower part is the main body of negative pressure shell, centre bore is on pump cover, and aspirating hole is at the middle part of the main body lower end of negative pressure shell, and the body combination of pump cover and negative pressure shell becomes a composite entity；Or, the lower end of the cylindrical cavity body portion in negative pressure shell is divided into two-stage nitration, the lower part of segmentation place is pump cover, upper part is the main body of negative pressure shell, aspirating hole is at the middle part of pump cover, centre bore is at the middle part of the upper end of the main body of negative pressure shell, and the body combination of pump cover and negative pressure shell becomes a composite entity；

Described to answer magnetic piston be cylindrical iron core, and the periphery of cylindrical iron core is smooth periphery, has the annular groove of depression on smooth periphery, and annular groove is embedded with sealing ring；Described periphery coordinate with the inner chamber of negative pressure shell can the inner chamber of sealed negative-pressure shell, and can slide at the interior intracavity of negative pressure shell；There is through hole the cylindrical central portion position of described cylindrical iron core, and through hole communicates with squish chamber and pumping chamber；The upper part of described through hole runs through the upper surface of iron core, lower part runs through iron core lower surface, the lower part of through hole is passage, the upper part of through hole is consent, the sealing neck of annular protruding upward is had in the bottom of consent, the endoporus sealing neck portion is the upper part of passage, sealing the groove having annular between the periphery of neck and the consent sealing neck portion, the groove of annular seals the capped pipe part of cap for holding；The described upper surface sealing neck is smooth annular sealing surface, and the periphery of sealing neck is smooth periphery；It it is consent on passage；Described passage is the via allowing air pass through, and below annular sealing surface, communicates with pumping chamber and consent；Described consent is to install and the fixing hole filled in, and sealing above neck and sealing outside neck, communicates with squish chamber and passage；

Described fixing plug be restriction be arranged on answer in magnetic piston seal on neck seal distance that cap moves up, centre have the plug of passage, described plug to be that centre has the cylinder of through hole or annular ring or card spring coil；When fixing plug is the cylinder that there is through hole centre, the fixing employing interference fit in consent is fixed or threaded engagement is fixed or adopts jump ring to be stuck in the jump-ring slot in consent the two ends of fixed cylinder；When fixing plug is annular ring, the fixing employing interference fit in consent is fixed or adopts jump ring to be stuck in the jump-ring slot in consent the two ends of stationary annular circle；When fixing plug is card spring coil, directly jump ring is stuck in consent；

Described annular sealing surface is the sealing surface of the flat smooth of annular, and annular sealing surface coordinates with the inner sealing surface sealing cap in the upper end sealing neck answering magnetic piston；

Described sealing cap is the circular pipe type cap body that top seals, and it is inner sealing surface that the inner top of sealing cap divides, and the cylindrical parts near inner sealing surface has air passing hole；

Described internal taper hole is tapered circular hole, and the face of circular hole is inner conical surface；The small end of internal taper hole under, hold upper greatly, respectively in the sealing neck of the lower end in the hollow valve body of air outlet valve and in negative pressure shell；Inner conical surface coordinates with the male cone (strobilus masculinus) sealing cone, can seal inner conical surface under the effect sealing the gravity boring self, can open, by suction, the passage that inner conical surface seals with sealing cone when sealing and having suction above cone；Seal cone air pressure above more big, seal cone more good with the gluing, sealing effect of inner conical surface；

Described sealing cone is cone or cone cylinder, and the annular surface of cone or cone cylinder is tapered male cone (strobilus masculinus)；Seal and seal inner conical surface by pressing under the gravity of sealing cone self when the male cone (strobilus masculinus) bored seals with inner conical surface；

Described restriction cap is calotte, and the crown part of calotte has the air passing hole allowing gas pass through, and the hatband part of calotte is fixed on to seal and can limit the upper distance moved of sealing cone installed on the inner conical surface sealed in neck on neck；

Described field controller is to control solenoid to produce the controller of electromagnetic field, to the interval time producing electromagnetic field for the second time more every time after controlling the time of electromagnetic field generation and the time length of generation electromagnetic field and producing electromagnetic field；

Described exhaust tube is the hollow pipe of aspirating hole and the vacuum tank connecting negative pressure shell；

Described aspirating hole be air enter negative pressure shell inner chamber through air passing hole, lower part in the centre sealing neck, having internal taper hole on the upper end of the aspirating hole sealed in neck, when being fitted without sealing cone in the internal taper hole sealed in neck, internal taper hole communicates with aspirating hole and pumping chamber；

The air extracted in vacuum tank is laid in pumping chamber and is waited to press, and extrudes air generation air pressure at squish intracavity and discharges outside negative pressure shell；When squish intracavity evacuates gas, pumping chamber communicates with squish chamber；When squish intracavity air-out, pumping chamber is by sealing cone and answering the internal taper hole sealing in magnetic piston and disconnect the passage bled in entrance squish chamber；

Described extracting vacuum brake boost energy-saving electromagnetic device, in the process evacuating gas, does not have return spring in controlling bleed-off passage and going out the one-way check valve of air duct；When pumping chamber evacuates gas, answer the suction that magnetic piston stroking upward produces to open to seal cone and the sealing of the internal taper hole sealed in neck in negative pressure shell lower end and open the passage bled, be arranged on answer in magnetic piston seal on neck seal cap under the effect of self gravitation automatic decline return and close the passage bled of entrance squish intracavity and seal；When evacuating gas in squish chamber, the cone that seals being arranged on the internal taper hole of air outlet valve utilizes the gravity of self to make sealing bore automatic decline return and closes the passage of the discharge on air outlet valve and seal, and answers magnetic descent of piston and making to produce pressure pumping chamber in and promotes to be arranged on and answer sealing in magnetic piston to seal the up passage bled then opening entrance squish intracavity of cap on neck；When squish chamber air-out, promote under the effect of outlet pressure on the internal taper hole of air outlet valve to seal cone up and open the passage given vent to anger of air outlet valve, be arranged on and answer the cap that seals sealing on neck in magnetic piston to utilize the gravity of self to make sealing cap decline return automatically close and answer the passage bled on magnetic piston to seal；

During use, the power-on circuit of insulated electric conductor and field controller connected by teacher of the opening position key switch, field controller is connected the power-on circuit of solenoid and is produced electromagnetic field, the captivation that electromagnetic field produces pulls the pressure answering magnetic piston overpowers iron core spring to move down, when answering magnetic piston to start descending, the cone that seals on the internal taper hole sealed in neck being arranged in negative pressure shell lower end closes the passage bled entering pumping chamber under the effect of the gravity of self, in air outlet valve seal cone under the effect of the gravity of self descending return and seal the inner conical surface of air outlet valve, cut off the outlet passageway in squish chamber；Answer magnetic piston when descending, air that magnetic piston is forced in pumping chamber is answered to make air produce internal pressure, the air having pressure enter into from the passage answered in magnetic piston answer the upper end sealing neck in magnetic piston upwards wash annular sealing surface open with the sealing of the inner sealing surface sealing cap and continue after making the displacement of sealing cap up, after sealing the air passing hole on cap then through the passage in fixing plug after enter squish intracavity；

Answer magnetic descent of piston move to compression iron core spring compression stage spacing time, the power-on circuit of field controller cutoff solenoid, electromagnetic field disappear, answer magnetic piston up under the promotion of iron core spring；When answering magnetic piston to start up, be arranged on answer in magnetic piston seal on neck to seal cap descending and close air and enter the passage bled in squish chamber under the effect of the gravity of self；When answering magnetic piston stroking upward, the up of magnetic piston is answered to make the air of squish intracavity create pressure, having the air of pressure to promote from the internal taper hole that the endoporus of the sealed end of air outlet valve lower end enters in air outlet valve, to seal cone up and open the sealing passage of air outlet valve, makes the air of squish intracavity enter in air after air outlet valve；Answer magnetic piston when up, magnetic piston is answered also to make to create in pumping chamber pull of vacuum, pull of vacuum is inhaled the sealing cone of the dynamic internal taper hole being arranged on and sealing in neck and is separated with internal taper hole, air in vacuum tank enters into internal taper hole from exhaust tube through aspirating hole, enters answering in the pumping chamber below magnetic piston in negative pressure shell then through the air passing hole on restriction cap；

Answer magnetic piston up when putting in place under the promotion of iron core spring, the cone that seals on the internal taper hole sealed in neck being arranged in negative pressure shell lower end closes the passage bled entering pumping chamber under the effect of the gravity of self, in air outlet valve seal cone under the effect of the gravity of self descending return and seal the inner conical surface of air outlet valve, cut off the outlet passageway in squish chamber and made air not return pumping chamber；Now, field controller is connected again the power-on circuit of solenoid and is again produced electromagnetic field and make to answer magnetic descent of piston；What so circulate is switched on and off circuit, makes solenoid generation electromagnetic field pull and answers magnetic piston stroking upward and allow the promotion of iron core spring answer magnetic descent of piston, constantly the air in vacuum tank is extracted out and enter in air.

2. extracting vacuum brake boost energy-saving electromagnetic device according to claim 1, it is characterised in that: keep the shape of protecting crust to ensure protecting crust that solenoid can be protected without damage, the interior intracavity manufacture at protecting crust has the skeleton of support.

3. extracting vacuum brake boost energy-saving electromagnetic device according to claim 1, it is characterised in that: in order to enable the air of the squish intracavity answering magnetic piston to promote in negative pressure shell to enter air outlet valve, adopt iron core spring as promoting the power answering magnetic piston stroking upward.

4. extracting vacuum brake boost energy-saving electromagnetic device according to claim 1, it is characterised in that: adopt the teacher position key switch being connected with insulated electric conductor to control being switched on and off of the connection circuit of field controller.

5. extracting vacuum brake boost energy-saving electromagnetic device according to claim 1, it is characterized in that: the compact conformation of described extracting vacuum brake boost energy-saving electromagnetic device, vibrate little, utilization rate of electrical is high, powerful, the electric automobile and the internal-combustion engines vehicle that are suitable for vacuum servo formula hydraulic braking are installed and used, and also are able to produce vacuum normally and realize vacuum servo after internal combustion engine shuts down；The market prospect of industrialization is good, commercial value is high, manufactures and uses all very convenient.

6. the manufacture method of an extracting vacuum brake boost energy-saving electromagnetic device, it is characterized in that: during fabrication, iron core spring adopts a kind of type in metal and rubber or two kinds of material manufacture, when adopting elastomeric material to manufacture, iron core spring creates hollow tubular type spring, utilizes the elasticity of rubber and contractility to realize the function of spring；

Protecting crust creates the hollow cavity of annular, and hollow cavity manufactures to be had string holes, string holes to create to allow the hole of insulated electric conductor traverse；Being provided with in field controller, solenoid and negative pressure shell and negative pressure shell the parts installed in hollow cavity, the inner of the annular housing of hollow cavity is fixed on negative pressure shell；

In order to convenient for assembly, during fabrication, after protecting crust is divided into two parts manufacture from annular position, recombinant is together for protecting crust；

The inner chamber of negative pressure shell creates the cavity of cylinder, and the periphery of cylindrical cavity creates smooth curved surface；Upper end on the centrage of inner chamber manufactures to have has aspirating hole and internal taper hole through the centre bore of negative pressure shell, lower end manufacture, and aspirating hole superposes with internal taper hole to be worn out the upper and lower side sealing neck and seals the negative pressure shell below neck；The middle part of the lower end in negative pressure shell manufactures sealing neck protruding upward, and the upper part sealing the inside of neck creates internal taper hole, lower part creates aspirating hole, and internal taper hole communicates with aspirating hole, and internal taper hole coordinates with sealing cone；

Air outlet valve creates hollow valve body and seals cone two parts, and hollow valve body creates hollow pipe, and internal taper hole manufacture is in the middle part of the inner chamber of hollow pipe or middle and lower part, and the internal diameter that the internal diameter that the upper part of the internal taper hole in hollow pipe manufactures is big, lower part manufactures is little；The lower end of hollow valve body manufactures return-air sealed end, the lower surface of return-air sealed end manufactures and creates internal taper hole in the lower end of hollow valve body, upper surface, the big end of internal taper hole communicates with the upper end of air outlet valve, small end communicates with the lower end of air outlet valve, is provided with sealing cone on the inner conical surface of internal taper hole；Inner conical surface can be opened when entering, from the endoporus of hollow valve body lower end, the air having pressure and form passage with sealing the sealing bored；

For the ease of the processing of negative pressure shell be easy to accessory to load in negative pressure shell, described negative pressure shell creates the assembly after segmental machining manufactures；The upper end of the cylindrical cavity body portion in negative pressure shell is divided into two-stage nitration manufacture, the upper part of segmentation place creates pump cover, lower part creates the main body of negative pressure shell, centre bore manufactures on pump cover, aspirating hole manufactures at the middle part of the main body lower end of negative pressure shell, and it is a composite entity that pump cover and the main body after negative pressure shell are combined into after manufacturing；Or, the lower end of the cylindrical cavity body portion in negative pressure shell is divided into two-stage nitration manufacture, the lower part of segmentation place creates pump cover, upper part creates the main body of negative pressure shell, aspirating hole manufactures at the middle part of pump cover, it is a composite entity that centre bore manufacture is combined into after the main body of the middle part of the upper end of the main body of negative pressure shell, pump cover and negative pressure shell manufactures；

Answering magnetic piston to create the iron core of cylinder, the periphery of cylindrical iron core creates smooth periphery, manufactures the annular groove having depression on smooth periphery, and annular groove is embedded with sealing ring；Described periphery coordinate with the inner chamber of negative pressure shell can the inner chamber of sealed negative-pressure shell, and can slide at the interior intracavity of negative pressure shell；The cylindrical central portion position of described cylindrical iron core manufactures through hole, and through hole communicates with squish chamber and pumping chamber；Described through hole creates that upper part runs through the upper surface of iron core, lower part runs through iron core lower surface, the lower part of through hole creates passage, the upper part of through hole creates consent, the sealing neck having annular protruding upward is manufactured in the bottom of consent, the endoporus sealing neck portion creates the upper part of passage, manufacturing, sealing, the groove having annular between the outer ring surface of neck and the consent sealing neck portion, the groove of annular seals the capped pipe part of cap for holding；The described upper surface sealing neck creates smooth annular sealing surface, and the periphery sealing neck creates smooth periphery；Manufactured above at passage has consent；Described passage creates the via allowing air pass through, and manufactures below annular sealing surface, communicates with pumping chamber and consent；Described consent creates to be installed and the fixing hole filled in, and manufactures sealing above neck and sealing outside neck, communicates with squish chamber and passage；

Fixing plug creates centre to be had the plug of passage, described plug to create centre to have the cylinder of through hole or annular ring or card spring coil, it is possible to restriction is arranged on answers sealing in magnetic piston to seal, on neck, the distance that cap moves up；When fixing plug creates the cylinder that there is through hole centre, the fixing employing interference fit in consent is fixed or threaded engagement is fixed or adopts jump ring to be stuck in the jump-ring slot in consent the two ends of fixed cylinder；When fixing plug creates annular ring, the fixing employing interference fit in consent is fixed or adopts jump ring to be stuck in the jump-ring slot in consent the two ends of stationary annular circle；When fixing plug creates card spring coil, directly jump ring is stuck in consent；

Described annular sealing surface creates the sealing surface of the flat smooth of annular, manufactures the upper end sealing neck answering magnetic piston and coordinates with the inner sealing surface sealing cap；

The described cap that seals creates the circular pipe type cap body that top seals, and seals the inner top of cap and divides and create inner sealing surface, and the cylindrical parts manufacture near inner sealing surface has air passing hole；

Internal taper hole creates tapered circular hole, and the face of circular hole creates inner conical surface；The small end of internal taper hole under, hold upper greatly, in the sealing neck of the lower end manufacturing respectively in the hollow valve body of air outlet valve and manufacturing in negative pressure shell；Inner conical surface can be sealed under sealing the effect of gravity of cone self, pass through suction when sealing and having suction above cone and can open inner conical surface and seal the passage that cone seals；Seal cone air pressure above more big, seal cone more good with the gluing, sealing effect of inner conical surface；

Sealing cone and create cone or cone cylinder, the annular surface of cone or cone cylinder creates tapered male cone (strobilus masculinus)；Seal and seal inner conical surface by pressing under the gravity of sealing cone self when the male cone (strobilus masculinus) bored seals with inner conical surface；

Restriction cap creates calotte, and the crown part of calotte manufactures the air passing hole allowing gas pass through, and the hatband part of calotte is fixed on and seals the distance sealing the upper shifting of cone installed on the inner conical surface that can limit on neck in sealing neck；

Field controller creates and controls solenoid and produce the controller of electromagnetic field, to the interval time producing electromagnetic field for the second time again after controlling time and the length producing the electromagnetic field time that electromagnetic field produces and every time producing electromagnetic field；

Exhaust tube creates the hollow pipe of aspirating hole and the vacuum tank connecting negative pressure shell；

Aspirating hole create air enter negative pressure shell inner chamber through via, manufacture the lower part in the centre sealing neck, the manufactured above of upper end at the aspirating hole sealed in neck has internal taper hole, when being fitted without sealing cone in the internal taper hole sealed in neck, internal taper hole communicates with aspirating hole and pumping chamber；

Keep the shape of protecting crust to ensure protecting crust that solenoid can be protected without damage, the interior intracavity manufacture at protecting crust has the skeleton of support；

In order to enable the air of the squish intracavity answering magnetic piston to promote in negative pressure shell to enter air outlet valve, adopt iron core spring as promoting the power answering magnetic piston stroking upward；

Being provided with solenoid in protecting crust, solenoid is fixed on the lower part outside negative pressure shell, and protecting crust is fixed on the lower sections of outside protection solenoid of negative pressure shell；Below the outside of protecting crust, one side is fixed with foot rest, and the lower end of foot rest protects exhaust tube not oppressed lower than negative pressure shell lower end, and the lower end of foot rest is fixed on the vehicle frame of automobile；The circuit connecting solenoid is connected with field controller, and the circuit of field controller is connected with insulated electric conductor, and field controller is arranged in protecting crust；Restriction cap is installed in negative pressure shell, seals cone, iron core spring, answers magnetic piston, seals cap, fixes plug, magnetic piston is answered to be arranged on the upper part of inner chamber of negative pressure shell, iron core spring is arranged on the lower part of the inner chamber of negative pressure shell, the lower end of iron core spring is pressed in the lower end in negative pressure shell, top, upper end and is pressed in the bottom answering magnetic piston, answers magnetic piston can slide up and down at the interior intracavity of negative pressure shell；The lower sections of sealing neck answering the consent in magnetic piston is provided with sealing cap, the capped pipe part sealing cap can slide up and down on the periphery sealing neck, being provided with in consent and fix the sliding distance filled in when limiting sealing cap upward sliding, the fixing plug fixing employing interference fit in consent is fixed or threaded engagement is fixed or adopts jump ring to be stuck in the jump-ring slot in consent fixes the two ends filled in；The inner sealing surface that the inner top of sealing cap divides can close the passage bled answered on magnetic piston when coordinating with annular sealing surface and seal, the inner sealing surface that the inner top of sealing cap divides can open, when separating with annular sealing surface, the passage bled answered on magnetic piston；Being provided with sealing cone in the internal taper hole sealed in neck of the lower end in negative pressure shell, restriction cap is fixed on the outside sealing neck by screw thread or jump ring；Seal cone to coordinate with the internal taper hole sealed in neck and can seal or open the passage bled in entrance negative pressure shell；When answering magnetic piston stroking upward, the lumen portion answering the lower sections of negative pressure shell of magnetic piston is pumping chamber；When answering magnetic descent of piston, the lumen portion answering the negative pressure shell of magnetic piston upper part is squish chamber；Being fixed with exhaust tube at the aspirating hole place of the lower end of negative pressure shell, the other end of exhaust tube is connected with vacuum tank, and the endoporus of exhaust tube communicates with aspirating hole and vacuum tank；Being provided with air outlet valve in the upper end of negative pressure shell, the lower part of air outlet valve is fixed in the centre bore of the overlying one end of negative pressure shell, and the upper surface of negative pressure shell is exposed in the upper end of air outlet valve.