CN102198830A - Novel normally closed solenoid valve of ABS (Antilock Brake System) - Google Patents
Novel normally closed solenoid valve of ABS (Antilock Brake System) Download PDFInfo
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- CN102198830A CN102198830A CN2010102351786A CN201010235178A CN102198830A CN 102198830 A CN102198830 A CN 102198830A CN 2010102351786 A CN2010102351786 A CN 2010102351786A CN 201010235178 A CN201010235178 A CN 201010235178A CN 102198830 A CN102198830 A CN 102198830A
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- spring
- valve
- normally closed
- sealing surface
- closed solenoid
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Abstract
The invention discloses a novel normally closed solenoid valve of an ABS (Antilock Brake System), which comprises a valve body, an armature, a spring and a valve seat; wherein the lower end of the valve body is provided with a valve hole, and the bottom of the valve body is provided with a spring hole; the spring is arranged in the spring hole; a seal surface is arranged the upper end of the valve seat and is provided with an orifice; the armature is pressed on the seal surface of the valve seat under the action of the spring; and a splayed arc angle or straight-flange chamfering flaring is arranged at the opening part of the orifice and connected the seal surface and the orifice. According to a transition region formed by the flaring, the problem of stress concentration generated by right-angle transition in the prior art is reduced, plastic deformation of materials is not easy to generate at the edge of the orifice of the seal surface, therefore, the problem of influence of drop of burrs generated by the plastic deformation into the orifice to use property and reliability of an electromagnetic valve is solved.
Description
Technical field
The present invention relates to a kind of anti-lock braking system in automobiles, particularly relate to and a kind ofly in this system be used to control the ABS normally closed solenoid valve that reduces the wheel cylinder brake pressure.
Background technology
The automobile brake anti-locking system abbreviates ABS as, is an important device that improves vehicle passive safety.
Though the ABS anti-lock braking system(ABS) has multiple structure, form by sensor, electronic control unit, hydraulic control unit three parts.The ABS anti-lock braking system(ABS) is according to the detected wheel velocity of speed sensor, be controlled by an electronic control unit the adjusting that hydraulic control unit carries out anti-lock brake pressure, wheel cylinder supercharging when satisfying emergency brake, pressurize and decompression requirement, with prevent vehicle moment break away, the generation of unsafe condition such as driving trace skew and vehicle body direction are uncontrolled.Normally closed solenoid valve is used for reducing the brake pressure of wheel cylinder at ABS as the time spent, and it adopts cylindrical armature usually, and is conical surface seal between the valve seat.This kind structure can be the Chinese patent of CN201235816Y referring to the applicant's notification number, this patent disclosure a kind of ABS normally closed solenoid valve, the moving iron that comprises valve body, valve opening and be arranged on valve opening top, the valve body outside is arranged with the ring filter screen, the described moving iron and the valve body outside are arranged with magnetic flux tube, adopt free-running fit between magnetic flux tube and the moving iron, the internal diameter of described magnetic flux tube thin-walled portion is slightly larger than the outer diameter of moving iron, is provided with retracing spring between the cavity at described magnetic flux tube top and the moving iron.In the ABD of this structure normally closed solenoid valve, described valve opening (cutoff port) is a cylindrical hole, itself and described moving iron (armature) leak free oral area (sealing surface), during work, under the bump of described moving iron, can produce plastic deformation, in described valve opening, form burr, had a strong impact on the in-use performance and the reliability of electromagnetic valve.
Summary of the invention
The present invention mainly is in order to solve that existing in prior technology valve seat cutoff port sealing surface easily produces plastic deformation under the bump of electromagnetic valve armature and the problem that forms burr, a kind of later-model ABS normally closed solenoid valve is provided, improved the structure of valve seat cutoff port and sealing surface, make described sealing surface under the bump of described armature, be difficult for produce plastic deformation, can in cutoff port, not form burr and influence the in-use performance and the reliability of described electromagnetic valve.
Above-mentioned technical matters of the present invention is mainly solved by following technical proposals: a kind of later-model ABS normally closed solenoid valve comprises valve body, armature, spring, valve seat; Be provided with valve body hole in described valve body lower end, the bottom is provided with spring eye, and described spring is arranged in this spring eye; Described valve seat upper end is provided with sealing surface, is provided with cutoff port on described sealing surface, and described armature is being pressed under the effect of described spring on the sealing surface of described valve seat; Oral area at described cutoff port is provided with an enlarging, and described enlarging connects described sealing surface and cutoff port.By between described sealing surface and cutoff port, setting up an outside open transition region, reduce in the prior art at right angles transition and produced the problem of stress concentration, be difficult for producing the plastic deformation of material, and therefore solved therefore and the burr that produces falls into in-use performance and the reliability problems that cutoff port influences electromagnetic valve at sealing surface cutoff port edge.
As a kind of improved technical scheme of the present invention, described enlarging is that the oral area at described cutoff port is provided with an arc chord angle.Make described sealing surface and described cutoff port form continuous rounding off by an arc chord angle is set, can reduce the stress concentration at this place to greatest extent, avoid producing the plastic deformation of material.
As the another kind of improved technical scheme of the present invention, described enlarging is that the oral area at described cutoff port is provided with a straight flange chamfering.Also can reduce the stress concentration at this place preferably by a straight flange chamfering, and be easy to processing.
By technical scheme of the present invention, improved the structure of valve seat cutoff port and sealing surface, make described sealing surface under the bump of described armature owing to arc chord angle or straight flange chamfering are difficult for producing plastic deformation, can in cutoff port, not form burr and influence the in-use performance and the reliability of described electromagnetic valve, make flow more stable.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the enlarged view at A place among Fig. 1;
Fig. 3 is a scheme drawing during by the straight flange chamfering for enlarging described in the present invention.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, technical scheme of the present invention is described in further detail.
Referring to Fig. 1, Fig. 2 and Fig. 3, a kind of later-model ABS normally closed solenoid valve comprises valve body 1, armature 2, spring 4, valve seat 3; Be provided with valve body hole 2a in described valve body 1 lower end, be provided with spring eye 2b in the bottom of valve body hole 2a; Described valve seat 3 upper ends are provided with sealing surface 3b, are provided with cutoff port 3a on described sealing surface 3b; Described spring 4 is arranged among the described spring eye 2b, and described armature 2 is applied spring force, and described armature 2 is pressed on the described sealing surface 3b.Oral area at described cutoff port 3a is provided with an arc chord angle 3c, makes described sealing surface 3b and described cutoff port 3a form continuous rounding off; Described arc chord angle 3c also can be a straight flange chamfering 3d who is easier to process.By between described sealing surface 3b and cutoff port 3a, setting up an outside open transition region, reduce in the prior art at right angles transition and produced the problem of stress concentration, be difficult for producing the plastic deformation of material, and therefore solved therefore and the burr that produces falls into in-use performance and the reliability problems that cutoff port 3a influences electromagnetic valve at sealing surface 3b cutoff port 3a edge.
Specific embodiment is in order more to be expressly understood the present invention, not as a kind of restriction to right of the present invention, under the prerequisite that does not break away from aim of the present invention, enlarging transition region shape between described sealing surface 3b and the described cutoff port 3a can have various variations, but its core is to reduce this regional plastic deformation, and all these will be included within the scope of this claim the conspicuous modification of described those skilled in the art.
Claims (3)
1. a later-model ABS normally closed solenoid valve comprises valve body, armature, spring, valve seat; Be provided with valve body hole in described valve body lower end, the bottom is provided with spring eye, and described spring is arranged in this spring eye; Described valve seat upper end is provided with sealing surface, is provided with cutoff port on described sealing surface, and described armature is being pressed under the effect of described spring on the sealing surface of described valve seat; It is characterized in that: the oral area at described cutoff port is provided with an enlarging, and described enlarging connects described sealing surface and cutoff port.
2. a kind of later-model ABS normally closed solenoid valve according to claim 1 is characterized in that: described enlarging is that the oral area at described cutoff port is provided with an arc chord angle.
3. a kind of later-model ABS normally closed solenoid valve according to claim 1 is characterized in that: described enlarging is that the oral area at described cutoff port is provided with a straight flange chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102351786A CN102198830A (en) | 2010-07-23 | 2010-07-23 | Novel normally closed solenoid valve of ABS (Antilock Brake System) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102351786A CN102198830A (en) | 2010-07-23 | 2010-07-23 | Novel normally closed solenoid valve of ABS (Antilock Brake System) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102198830A true CN102198830A (en) | 2011-09-28 |
Family
ID=44659894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102351786A Pending CN102198830A (en) | 2010-07-23 | 2010-07-23 | Novel normally closed solenoid valve of ABS (Antilock Brake System) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102198830A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07224961A (en) * | 1994-02-07 | 1995-08-22 | Ckd Corp | Solenoid valve |
| US20060284130A1 (en) * | 2005-05-20 | 2006-12-21 | Parker-Hannifin Corporation | Solenoid valve |
| US20080042086A1 (en) * | 2004-07-30 | 2008-02-21 | Sisk Gregory E | Solenoid Valve |
| CN101328989A (en) * | 2007-06-18 | 2008-12-24 | Smc株式会社 | Two-port solenoid valve |
| CN101338824A (en) * | 2007-07-11 | 2009-01-07 | 浙江盾安人工环境设备股份有限公司 | Electromagnetic four-way valve main valve seat processing method |
| CN201235816Y (en) * | 2008-07-03 | 2009-05-13 | 万向集团公司 | Novel ABS normally closed solenoid valve |
| CN201736983U (en) * | 2010-07-23 | 2011-02-09 | 浙江万向精工有限公司 | Novel ABS normally closed electromagnetic valve |
-
2010
- 2010-07-23 CN CN2010102351786A patent/CN102198830A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07224961A (en) * | 1994-02-07 | 1995-08-22 | Ckd Corp | Solenoid valve |
| US20080042086A1 (en) * | 2004-07-30 | 2008-02-21 | Sisk Gregory E | Solenoid Valve |
| US20060284130A1 (en) * | 2005-05-20 | 2006-12-21 | Parker-Hannifin Corporation | Solenoid valve |
| CN101328989A (en) * | 2007-06-18 | 2008-12-24 | Smc株式会社 | Two-port solenoid valve |
| CN101338824A (en) * | 2007-07-11 | 2009-01-07 | 浙江盾安人工环境设备股份有限公司 | Electromagnetic four-way valve main valve seat processing method |
| CN201235816Y (en) * | 2008-07-03 | 2009-05-13 | 万向集团公司 | Novel ABS normally closed solenoid valve |
| CN201736983U (en) * | 2010-07-23 | 2011-02-09 | 浙江万向精工有限公司 | Novel ABS normally closed electromagnetic valve |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110928 |