CN108626465A - Solenoid valve - Google Patents
Solenoid valve Download PDFInfo
- Publication number
- CN108626465A CN108626465A CN201710157762.6A CN201710157762A CN108626465A CN 108626465 A CN108626465 A CN 108626465A CN 201710157762 A CN201710157762 A CN 201710157762A CN 108626465 A CN108626465 A CN 108626465A
- Authority
- CN
- China
- Prior art keywords
- solenoid valve
- plunger
- travel switch
- valve
- steering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
Abstract
Further include the travel switch being mounted on magnet plunger motion path for being triggered by magnet plunger the present invention provides solenoid valve, including valve body and plunger.Invention increases travel switches, and the voltage change by detecting travel switch circuit can determine whether solenoid valve fails.Solenoid valve design is simple, and functional reliability is good, it is ensured that can be detected in time in the case of electromagnetism defective valve, consequently facilitating the system residing for solenoid valve makes remedial measure in time.
Description
Technical field
The invention belongs to Solenoid Valve Technology fields, and in particular to solenoid valve.
Background technology
Solenoid valve extensive use in the supply of the fluids such as liquid, gas, transmission, control and dynamical system, solenoid valve usually according to
The purpose controlled valve on and off is realized by electromagnetic attraction, gas pressure and spring force etc., is the pass of whole system
Key parts.
Hydraulic power-assist steering system provides power resources using engine driving steering pump, the machinery that engine is rotated
It can be converted into the hydraulic energy for turning to fluid, power steering is provided by power steering stgear, driver is reduced and be applied to steering
Steering force on disk.
Electro-Hydraulic Power Steering System according to the difference of control mode, can be divided into counter-force control formula, flow control formula and
Valve gain control standard three types.
The electric hydraulic power-assisted steering system of automobile is that traditional steering pump driven by the engine is changed to by turning to
Motor drives steering pump, uses power battery pack or accumulator independently of engine to power for steering motor, uses simultaneously
Controller is according to the operating status of vehicle (engine whether open, turning velocity size, speed size) control steering motor
Rotating speed improves energy-saving effect, while realizing the characteristic that steering force changes with speed and turning velocity.
The Electro-Hydraulic Power Steering System of the counter-force control formula of automobile, vehicle speed sensor pass current vehicle speed operating condition
Turning control cell ECU is passed, the average current that turning control cell ECU makes to be arranged the electromagnetic valve coil in fluid pressure line increases
Big or reduction, the average aperture of solenoid valve increase or reduce, and to change the regurgitant volume of shunting flow of pressurized, act on counter-force plunger
Back pressure change, then so that when light steering of when low speed or high speed forms stronger steering " road feel ".
But if electromagnetism defective valve, without control signal on solenoid valve, it will keep maximum steering " road feel ", make original
Direction is more heavy when ground or low speed turn to；Under same speed, with the increase of turning velocity, due to turning control cell control
System is constant by the average current of electromagnetic valve coil, and the average aperture of solenoid valve is also constant, and steering force will not be with turning velocity
Increase and lower, increase degree of fatigue when fast steering, turning to comfort level reduces.
Invention content
The purpose of the present invention is to provide a kind of solenoid valve, to solve can not to judge that whether solenoid signal failed asks
Topic.
In order to solve the above technical problems, the technical scheme is that：
Further include being mounted on magnet plunger motion path the present invention provides a kind of solenoid valve, including valve body and plunger
On travel switch for being triggered by magnet plunger.
Further, the solenoid valve is the electromagnetism open in usual that magnet plunger is held in normally open position by spring
Valve, the travel switch include switch contact, and switch contact is contacted with the magnet plunger of normally open position.
Further, switch contact has the circuit where conducting travel switch when magnet plunger is in normally open position
Closing position and for when magnet plunger acts disconnect travel switch where circuit sub-gate position.
Further, supporting sleeve is provided in spring, circuit where travel switch includes being set to the supporting sleeve
On conducting wire, supporting sleeve upper end is provided with turn edge, and switch contact is set to the downside of turn edge, conducting wire have be located at it is described
The contact for being contacted with the switch contact in turn edge, magnet plunger, which has, to be opened across turn edge and realizing with described
Close the connected protrusion of contact.
Further, the plunger includes the piston body that cooperation is oriented to valve body, and the piston body passes through transition shoulder
It is connected with protrusion, spring is for jacking up transition shoulder.
Beneficial effects of the present invention：
The solenoid valve of the present invention, increases travel switch, and the voltage change by detecting travel switch circuit can determine whether
Whether solenoid valve fails.Solenoid valve design is simple, and functional reliability is good, it is ensured that in the case of electromagnetism defective valve can and
When detect, consequently facilitating the system residing for solenoid valve makes remedial measure in time.
Description of the drawings
Fig. 1 is the composite structural diagram of the electronic and automatically controlled two-in-one hydraulic power-assist steering system of counter-force control formula；
Fig. 2 is the solenoid valve schematic diagram for not increasing travel switch；
Fig. 3 is schematic diagram when the solenoid valve of increase travel switch is in normally open；
Fig. 4 is schematic diagram when the hollow plunger for the solenoid valve for increasing travel switch moves downward.
Specific implementation mode
To keep the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, to the present invention
It is described in further detail.
Below the solenoid valve of the present invention is applied to the automatically controlled and electronic two-in-one hydraulic power steering system of counter-force control formula
It is illustrated in system.
As shown in Figure 1, the automatically controlled and electronic two-in-one hydraulic power-assist steering system of counter-force control formula mainly by steering wheel 1, turn
To tubing string 2, in-line power steering 3 (comprising steering control valve 4, manual steering gear 5, actuator cylinder 6, oil pressure counter force chamber 7,
Counter-force plunger 8), steering reservoir 9, electric powered steering oil pump 10, steering oil pipe 11, flow divider 12 and fixed restriction aperture 13, electromagnetism
The compositions such as valve 14, turning control cell ECU 15, vehicle speed sensor 16, main structure are in course changing control rotary valve spool
Front end has installed two pairs of counter-force plungers additional.It is provided with steering angular velocity sensor 17 on steering column 2, steering angular velocity when steering
Sensor converts steering angular velocity to corresponding electric signal and is sent to turning control cell ECU.Solenoid valve 14 uses this hair
The bright solenoid valve for adding travel switch, turning control cell ECU 15 are sentenced by the voltage change of detection travel switch circuit
Whether power-off magnet valve fails.
For the system in normal work, steering motor is operated in the higher steering range of efficiency, realizes electric-controlled hydraulic power-assisted
The function of steering is operated under automatically controlled operating mode；The solenoid valve switched using tape travel, turning control cell ECU can be with
Judge whether solenoid valve fails；When electromagnetism defective valve cannot achieve electric-controlled hydraulic power-assisted steering function, turning control cell ECU
Steering motor variable frequency work is controlled according to speed, the size of steering angular velocity, electric hydraulic power-assisted steering function is realized, that is, works
Under electric mode.The electronic and automatically controlled two-in-one hydraulic power-assist steering system can be real under different working condition in this way
Existing " low speed steering is light, and high speed enhancing road feel (i.e. power-assisted reduces) avoids unstable ", at the same it is energy saving, efficient.
Generally, transformation of the automatically controlled operating mode to electric mode is the electricity for judging to be arranged in fluid pressure line
Whether magnet valve can work normally.If solenoid valve can be worked normally according to the signal of turning control cell ECU, system work
Under automatically controlled operating mode；When finding electromagnetism defective valve, system switchs to electric mode.The emphasis of the present invention is to pass through
Travel switch is added in solenoid valve to be judged.
Fig. 2 is the solenoid valve for not increasing travel switch, and solenoid valve includes valve body 18, the hollow plunger that is arranged in valve body 18
19, and the electromagnetic coil 20 that is arranged outside valve body 18, hollow plunger 19 include with valve body 18 be oriented to cooperation piston body 21 and
Protrusion 22.Piston body 21 is connected by transition shoulder 23 with protrusion 22, and spring 24 is for jacking up transition shoulder 23.The solenoid valve passes through
Hollow plunger 19 is held in normally open by spring 24, is normally open type magnetic valve.It is provided on hollow plunger 19 and matches with valve body 18
The small valve port 25 and big valve port 26 closed.It is pumped by hollow plunger 19 so that the aperture of solenoid valve changes, i.e.,
It changes from flow of the small valve port through excessive valve port, to control hydraulic power-assisted steering.
Fig. 3 is the solenoid valve for increasing travel switch, increases travel switch on the basis of Fig. 2.Travel switch includes switch
Contact 27, under normal circumstances, the contact of switch contact 27 and the protrusion 22 of the hollow plunger 19 of the solenoid valve of normally open position.
Switch contact has closing position, for being returned where conducting travel switch when the hollow plunger 19 of solenoid valve is in normally open position
Road；Also there is sub-gate position, for circuit where disconnecting travel switch when the hollow plunger 19 of solenoid valve acts.In spring 24
It is provided with supporting sleeve 28, circuit where travel switch includes the conducting wire 29 being set in supporting sleeve 28, and supporting sleeve 28 is used
In support conducting wire 29.28 upper end of supporting sleeve is provided with turn edge, and the switch contact 27 of travel switch is set under turn edge
Side, conducting wire 29 have the contact for being contacted with switch contact 27 being located in turn edge, the protrusion of the hollow plunger of solenoid valve
22 pass through turn edge and realized by contact contact with switch contact 27 it is connected.Circuit where travel switch further includes being set to electricity
Conducting wire 30 outside magnet valve valve body 18 and conducting wire 31, conducting wire 31 are connected with ECU out-put supply anodes, and conducting wire 30 is grounded, and the circuit
In be provided with diode 32, the anode of diode 32 is connected to the ground.
In state as shown in Figure 3, circuit where travel switch is in the conduction state, at this time ECU collection voltages signal,
It can detect "high" voltage.When giving solenoid valve actuating signal, when hollow plunger moves downward, the protrusion 22 of hollow plunger can drive
Contact (being contacted with the switch contact 27 of travel switch) downwards, to make travel switch place circuit disconnect, is adopted by ECU at this time
When collecting voltage signal, voltage signal is " low ", as shown in Figure 4.If giving solenoid valve actuating signal, pass through ECU collection voltages signals
When, it is still able to collect "high" voltage signal, then illustrates electromagnetism defective valve.
The present embodiment is that the solenoid valve is applied in automatically controlled and electronic two-in-one hydraulic power-assist steering system, but should
It points out, solenoid valve of the invention can also be applied to other field, as long as being judged by travel switch that the solenoid valve is added
Whether solenoid valve fails, all within protection scope of the present invention.
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (5)
1. a kind of solenoid valve, including valve body and magnet plunger, which is characterized in that further include being mounted on magnet plunger to move road
Travel switch on diameter for being triggered by magnet plunger.
2. solenoid valve according to claim 1, which is characterized in that the solenoid valve is to be protected magnet plunger by spring
It is held in the normally open type magnetic valve of normally open position, the travel switch includes switch contact, the electromagnetism of switch contact and normally open position
Valve plunger contacts.
3. solenoid valve according to claim 2, which is characterized in that switch contact has is in normally opened position in magnet plunger
The closing position in travel switch place circuit is connected when setting and for circuit where disconnecting travel switch when magnet plunger acts
Sub-gate position.
4. solenoid valve according to claim 3, which is characterized in that be provided with supporting sleeve, travel switch place in spring
Circuit includes the conducting wire being set on the supporting sleeve, and supporting sleeve upper end is provided with turn edge, and switch contact is set to interior
The downside to turn edge, conducting wire have the contact for being contacted with the switch contact being located in the turn edge, magnet plunger
With across turn edge and realizing the protrusion for contacting with the switch contact and being connected.
5. solenoid valve according to claim 4, which is characterized in that the plunger includes the plunger master for being oriented to cooperation with valve body
Body, the piston body are connected by transition shoulder with protrusion, and spring is for jacking up transition shoulder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710157762.6A CN108626465A (en) | 2017-03-16 | 2017-03-16 | Solenoid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710157762.6A CN108626465A (en) | 2017-03-16 | 2017-03-16 | Solenoid valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108626465A true CN108626465A (en) | 2018-10-09 |
Family
ID=63686766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710157762.6A Pending CN108626465A (en) | 2017-03-16 | 2017-03-16 | Solenoid valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108626465A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MX170405B (en) * | 1989-12-14 | 1993-08-19 | Automatic Switch Co | FOUR-STEP SLIDING VALVE |
| DE19643430A1 (en) * | 1996-10-22 | 1998-04-30 | Man B & W Diesel Gmbh | Control valve e.g. for large diesel engine |
| US20040035469A1 (en) * | 2002-08-26 | 2004-02-26 | Toyota Jidosha Kabushiki Kaisha | Electromagnetic valve control device and method |
| CN101225888A (en) * | 2008-02-04 | 2008-07-23 | 重庆大学 | Bistable impulse electromagnetic valve and drive circuit thereof |
| CN102717828A (en) * | 2012-06-13 | 2012-10-10 | 清华大学 | Automobile electro-hydraulic power-assisted steering system and control method thereof |
| CN106481609A (en) * | 2015-08-27 | 2017-03-08 | 山路宪平 | Proportional control solenoid valve system |
| CN206754548U (en) * | 2017-03-16 | 2017-12-15 | 郑州宇通客车股份有限公司 | A kind of magnetic valve |
-
2017
- 2017-03-16 CN CN201710157762.6A patent/CN108626465A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MX170405B (en) * | 1989-12-14 | 1993-08-19 | Automatic Switch Co | FOUR-STEP SLIDING VALVE |
| DE19643430A1 (en) * | 1996-10-22 | 1998-04-30 | Man B & W Diesel Gmbh | Control valve e.g. for large diesel engine |
| US20040035469A1 (en) * | 2002-08-26 | 2004-02-26 | Toyota Jidosha Kabushiki Kaisha | Electromagnetic valve control device and method |
| CN101225888A (en) * | 2008-02-04 | 2008-07-23 | 重庆大学 | Bistable impulse electromagnetic valve and drive circuit thereof |
| CN102717828A (en) * | 2012-06-13 | 2012-10-10 | 清华大学 | Automobile electro-hydraulic power-assisted steering system and control method thereof |
| CN106481609A (en) * | 2015-08-27 | 2017-03-08 | 山路宪平 | Proportional control solenoid valve system |
| CN206754548U (en) * | 2017-03-16 | 2017-12-15 | 郑州宇通客车股份有限公司 | A kind of magnetic valve |
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