CN201306508Y - Normally closed solenoid valve for anti-lock brake system - Google Patents
Normally closed solenoid valve for anti-lock brake system Download PDFInfo
- Publication number
- CN201306508Y CN201306508Y CNU2008201296597U CN200820129659U CN201306508Y CN 201306508 Y CN201306508 Y CN 201306508Y CN U2008201296597 U CNU2008201296597 U CN U2008201296597U CN 200820129659 U CN200820129659 U CN 200820129659U CN 201306508 Y CN201306508 Y CN 201306508Y
- Authority
- CN
- China
- Prior art keywords
- valve
- plunger tube
- valve seat
- solenoid valve
- normally closed
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Magnetically Actuated Valves (AREA)
Abstract
The utility model relates to a normally closed solenoid valve for an anti-lock brake system, comprising a coil, plunger tube arranged inside the coil, a keeper arranged inside the plunger tube, a stop iron connected with the upper end of the plunger tube and a valve seat connected with the lower end of the plunger tube, wherein a return spring is arranged on the upper end surface of the keeper; a steel ball is arranged on the lower end surface of the keeper; a tapered valve port is arranged on the upper end surface of the valve seat; an internal-leakage preventing device is arranged between the valve seat and an installation valve block; and the internal-leakage preventing device comprises a first check ring and a first O ring which are arranged between the installation valve block and the valve seat, wherein the first check ring and the O ring are arranged on the upper end of a solenoid valve inlet; and the lower end of the plunger tube is connected with the valve seat in a compression deformation way. The utility model solves the problem that in the prior art, the fast normally closed solenoid valve has the disadvantages of complex structure and high cost, and has reasonable design and compact structure, is suitable for batch production and can effectively prolong the service life of an anti-lock brake system and improve the safety and reliability of the anti-lock brake system.
Description
Technical field
The utility model relates to a kind of anti-block braking system of car normally closed solenoid valve.
Background technique
At ponding highway section or sleety weather, when automobile travelled on the road surface, the friction factor on tire and ground reduced, and the easy locking of wheel during automobile brake produces sideslip, whipping phenomenon.Running into urgency, driver's Emergency braking of often brake petal being floored rapidly can produce the problem of wheel lock up equally.Experienced driver often steps on pedal one that a pine prevents wheel lock up and the sideslip, the whipping phenomenon that cause.Anti-block braking system of car (hereinafter to be referred as ABS) can successfully solve the problem of wheel lock up.
The ABS system generally is made up of electronic controller (ECU), fluid pressure governor (HCU) and wheel speed sensors three parts.Wherein, fluid pressure governor is the actuator of ABS, and its dynamic response characteristic is determining the performance of ABS system, and it accepts the voltage signal from ECU, drives the solenoid valve action, to realize the adjusting to pressure of wheel braking cylinder.Fluid pressure governor is the core component of ABS hydraulic braking sytem, mainly is made of solenoid valve, accumulator, dump pump and some auxiliary hydraulic pressure valves etc.Each wheel is provided with a quick normally open solenoid valve and a quick normally closed solenoid valve, and their whole series connection are used in hydraulic pipe line.Normally open valve is connected in the pipeline from the brake master cylinder to the wheel cylinder, and normally close valve is connected between wheel cylinder and the low pressure accumulator.In the anti-lock brake process, the adjusting of wheel cylinder retardation pressure is carried out in switch motion by the fluid pressure governor solenoid valve, this moment, solenoid valve divided three kinds of working conditions: (1) is when that ECU judges is current should be in pressurized state the time, often open with normally closed solenoid valve and all be in off-position, normally open valve is open, normally close valve cuts out, and the high hydraulic brake fluid of master cylinder enters wheel cylinder via normally open valve; (2) when ECU judge current should be in packing state the time, the normally open solenoid valve energising, the normally closed solenoid valve outage, normally open valve and normally close valve are all closed, the brake fluid of wheel cylinder is closed in pressurize between two solenoid valves; (3) judge currently should be in decompression state the time as ECU, Chang Kai and normally closed solenoid valve all are in "on" position, and normally open valve is closed, and normally close valve is opened, and the brake fluid in the wheel cylinder enters low pressure accumulator via normally close valve.The effect of dump pump is the brake fluid blowback master cylinder in the wheel cylinder.
Existing quick normally closed solenoid valve structure is various, but has following shortcoming:
1, plunger tube and valve seat adopt welding procedure, this technology mode complex structure, and cost is higher, is not suitable for producing in batches;
2, anti-interior leakage of solenoid valve adopts extrusion-deformation and friction tight mode to guarantee.This mode production technology is bad, to the requirement on machining accuracy height, also be not suitable for producing in batches.
Summary of the invention
For the technical problem that solves in the background technique normally closed solenoid valve complex structure fast, cost height, is not suitable for producing in batches, the utility model provides a kind of reasonable in design, compact structure, has been fit to produce in batches, can effectively improve the normally closed solenoid valve of anti-block braking system of car working life and safety reliability.
Technical solution of the present invention:
A kind of anti-block braking system of car normally closed solenoid valve, comprise coil 19, be arranged on the plunger tube 1 in the coil 19, be arranged on the armature 3 in the plunger tube 1, the buting iron 2 that is connected with plunger tube 1 upper end, the valve seat 5 that is connected with plunger tube 1 lower end, described armature 3 upper-end surfaces are provided with Returnning spring 12, described armature 3 lower end surfaces are provided with steel ball 11, described valve seat 5 upper-end surfaces are provided with taper valve port 13, described valve seat 5 and 20 of installation valve pieces are provided with anti-interior neglected loading and put, described anti-in neglected loading put and comprise and be arranged on first back-up ring 6 and the O shape circle 7 that 5 of valve piece 20 and valve seats are installed, described first back-up ring 6 and O shape circle 7 are arranged on the upper end of electromagnetic valve entrance 18, it is characterized in that: described plunger tube 1 lower end adopts the mode of extrusion-deformation to be connected with 5 of valve seats.
Above-mentioned valve seat 5 side circumferencial directions are provided with at least one rectangle groove 15, sink in the described rectangle groove 15 in after the described plunger tube 1 lower end extrusion-deformation.
Above-mentioned anti-interior neglected loading is put and is also comprised the 2nd O shape circle 9 and second back-up ring 10 that is arranged on valve seat 5 and 20 of valve pieces are installed, and described the 2nd O shape circle 9 and second back-up ring 10 is arranged on the lower end of electromagnetic valve entrance 18.
The advantage that the utlity model has is: the technology that adopts extrusion-deformation that is connected of plunger tube and valve seat, improved Location accuracy, and produced in batches easily; Valve seat adopts O shape circle and back-up ring with installation valve interblock one side in the past, and opposite side adopts drive fit and extrusion-deformation to prevent that interior mode of leaking changes the anti-interior leakage of mode that O shape circle and back-up ring are all adopted in both sides into, has reduced the requirement of machining accuracy, and is reasonable in design, compact structure.
Description of drawings
Fig. 1 is the overall structure sectional view of background technique normally closed solenoid valve;
Fig. 2 is a whole sectional structure chart of the present utility model;
Wherein: 1-plunger tube, 2-buting iron, 3-armature, 4-sleeve, the 5-valve seat, 6-first back-up ring, 7-the one O shape circle, 8-filter screen, 9-the 2nd O shape circle, 10-second ring washer, 11-steel ball, the 12-Returnning spring, 13-taper valve port, 14-inlet restriction aperture, 15-rectangle groove, the 16-cavity that enters the mouth, the space that 17-armature upper-end surface and buting iron constitute, the 18-electromagnetic valve entrance, the 19-coil, 20-installs the valve piece.
Embodiment
The utility model anti-block braking system of car with normally closed solenoid valve mainly by coil 19, the valve seat 5 that in coil plunger tube 1 is set, places armature 3 in the plunger tube 1, merge the buting iron 2 that is welded to connect with plunger tube, cooperate and be connected with plunger tube upper end endoporus close-fitting, and the sleeve 4 of plunger tube periphery Spielpassung and prevent that interior neglected loading is put and form with plunger tube extrusion-deformation with plunger tube lower end endoporus; The armature upper-end surface is provided with cylindrical Returnning spring, and the mode that closes up by extrusion-deformation in the lower end surface is fixed steel ball in the corresponding mounting hole; Throttling pore 14 is arranged on the plunger tube, and this throttling pore is communicated with electromagnetic valve entrance 18 with the electromagnetic valve entrance chamber 16 that armature, buting iron and plunger tube three constitute; Neglected loading is put the O shape circle 7, the filter screen 8 that is placed on O shape circle below that comprise first back-up ring 6, prevent external leakage, is placed on the 2nd O shape circle 9 and second back-up ring 10 that leaks in preventing the filter screen below and forms in anti-.
During conventional the action, the steel ball on Returnning spring power and brake fluid effect lower armature drops on the cone valve jaw of valve seat, closed electromagnetic valve, and the retardation pressure of braking overall pump is more than or equal to a minute pumping pressure at this moment.When the needs brake off, system gives coil electricity, and armature lifts under the acting in conjunction of electromagnetic attraction, spring force and brake fluid hydraulic coupling etc., conducting electromagnetic valve entrance chamber and brake fluid passage, and brake fluid refluxes, and reduces and divides pumping pressure.
Claims (3)
1, a kind of anti-block braking system of car normally closed solenoid valve, comprise coil (19), be arranged on the plunger tube (1) in the coil (19), be arranged on the armature (3) in the plunger tube (1), the buting iron (2) that is connected with plunger tube (1) upper end, the valve seat (5) that is connected with plunger tube (1) lower end, described armature (3) upper-end surface is provided with Returnning spring (12), described armature (3) lower end surface is provided with steel ball (11), described valve seat (5) upper-end surface is provided with taper valve port (13), being provided with anti-interior neglected loading between described valve seat (5) and installation valve piece (20) puts, described anti-interior neglected loading is put and is comprised that being arranged on first back-up ring (6) and an O shape of installing between valve piece (20) and valve seat (5) encloses (7), described first back-up ring (6) and O shape circle (7) is arranged on the upper end of electromagnetic valve entrance (18), it is characterized in that: the mode of employing extrusion-deformation is connected between described plunger tube (1) lower end and valve seat (5).
2, anti-block braking system of car normally closed solenoid valve according to claim 1, it is characterized in that: described valve seat (5) side circumferencial direction is provided with at least one rectangle groove (15), sinks in the described rectangle groove (15) in after described plunger tube (1) the lower end extrusion-deformation.
3, anti-block braking system of car normally closed solenoid valve according to claim 1 and 2, it is characterized in that: described anti-interior neglected loading is put and is comprised that also the 2nd O shape that is arranged on valve seat (5) and installs between valve piece (20) is enclosed (9) and second back-up ring (10), and described the 2nd O shape circle (9) and second back-up ring (10) are arranged on the lower end of electromagnetic valve entrance (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201296597U CN201306508Y (en) | 2008-12-17 | 2008-12-17 | Normally closed solenoid valve for anti-lock brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201296597U CN201306508Y (en) | 2008-12-17 | 2008-12-17 | Normally closed solenoid valve for anti-lock brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201306508Y true CN201306508Y (en) | 2009-09-09 |
Family
ID=41098973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201296597U Expired - Fee Related CN201306508Y (en) | 2008-12-17 | 2008-12-17 | Normally closed solenoid valve for anti-lock brake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201306508Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103582773A (en) * | 2011-06-07 | 2014-02-12 | 罗伯特·博世有限公司 | Electromagnetically actuated valve |
| CN105026813A (en) * | 2013-03-11 | 2015-11-04 | 丰田自动车株式会社 | Solenoid valve |
| CN105452744A (en) * | 2013-11-15 | 2016-03-30 | 株式会社鹭宫制作所 | Solenoid valve |
| CN108700202A (en) * | 2016-01-14 | 2018-10-23 | Eto电磁有限责任公司 | The application of solenoid valve and solenoid valve |
-
2008
- 2008-12-17 CN CNU2008201296597U patent/CN201306508Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103582773A (en) * | 2011-06-07 | 2014-02-12 | 罗伯特·博世有限公司 | Electromagnetically actuated valve |
| CN105026813A (en) * | 2013-03-11 | 2015-11-04 | 丰田自动车株式会社 | Solenoid valve |
| CN105452744A (en) * | 2013-11-15 | 2016-03-30 | 株式会社鹭宫制作所 | Solenoid valve |
| CN105452744B (en) * | 2013-11-15 | 2017-10-03 | 株式会社鹭宫制作所 | Magnetic valve |
| CN108700202A (en) * | 2016-01-14 | 2018-10-23 | Eto电磁有限责任公司 | The application of solenoid valve and solenoid valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103318158B (en) | Integrated electronic hydraulic brake system of automobile | |
| CN102066169B (en) | Control valve for a vehicle brake system and vehicle brake system comprising such a control valve | |
| CN106114486B (en) | A kind of ABS electric-gas control relay valve | |
| CN101580060B (en) | Solenoid valve with short axis | |
| CN201306508Y (en) | Normally closed solenoid valve for anti-lock brake system | |
| CN112776786B (en) | Drive-by-wire braking system with redundancy function | |
| EP1065116A2 (en) | Isolation valve armature configured to reduce Bernoulli force during normal braking operation | |
| US20240017708A1 (en) | Hydraulic Braking Apparatus and Vehicle | |
| CN108791260B (en) | Wire control hydraulic braking system utilizing EPB auxiliary redundancy | |
| CN208264236U (en) | Simple integrated type electrical brake fluid system | |
| CN209305559U (en) | A kind of combination valve | |
| CN101054085B (en) | Braking anti-lock system with running braking function | |
| CN201326805Y (en) | Normally-open solenoid valve used in anti-lock braking system of automobile | |
| CN204488784U (en) | The novel WBS car brake of pure electric automobile | |
| KR101782779B1 (en) | Pilot valve of brake system | |
| CN203305998U (en) | Integrated electronic hydraulic brake system for automobile | |
| CN202574192U (en) | Pneumatic and electric dual-purpose multifunctional brake control device | |
| CN201980220U (en) | Electronic control type vacuum booster with emergency braking function | |
| CN101590827B (en) | Flat tire braking system | |
| CN104828053B (en) | A kind of energy-saving electronic brake fluid system and its control method | |
| CN201424014Y (en) | ABS four-channel pressure regulator body | |
| CN107662596B (en) | Automobile electrically-controlled braking system | |
| CN101633353B (en) | ABS seat body | |
| CN201472364U (en) | ABS/ESC normally open solenoid valve structure | |
| CN205675023U (en) | A kind of multifunctional stepless potential device and ABS combination relay valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090909 Termination date: 20131217 |