CN202022201U

CN202022201U - Novel magnetic valve structure

Info

Publication number: CN202022201U
Application number: CN2011200464050U
Authority: CN
Inventors: 水浩峻; 危红星; 向世水; 覃赞文
Original assignee: Wuhu Bethel Electronic Control Systems Co Ltd
Current assignee: Wuhu Bethel Electronic Control Systems Co Ltd
Priority date: 2011-02-24
Filing date: 2011-02-24
Publication date: 2011-11-02
Anticipated expiration: 2021-02-24

Abstract

The utility model discloses a novel magnetic valve structure, which comprises armature, a valve core, a valve sleeve, a first elastic piece, a valve shell, a bracket, a throttling seat, a valve base, a filter screen and a second elastic piece, wherein the valve core is arranged at one side of the armature, and one end of the valve core is provided with a protruding sealing part; the valve sleeve is arranged at the outer sides of the armature and the valve core, and guides the valve core to move up and down; the first elastic part is arranged between the armature and the valve core; the valve shell is connected with one end of the valve sleeve and has a hollow structure; the bracket is sheathed outside the valve core in an interference-fit manner, extends out of the valve core part, and is provided with an inner flange at the tail end; one end of the throttling seat is connected with the inner flanging of the bracket; the valve base is connected with the valve shell at one end, is provided with an inlet and an outlet, and has a hollow structure; the filter screen is arranged inside the valve base and outside the bracket, and is used for preventing impurities from entering magnetic valve; and one end of the second elastic piece is installed on the throttling seat, and the other end of the second elastic piece is installed on the valve base. The novel magnetic valve structure has the advantages that the requirement on electromagnetic force is reduced, namely the coil working current can be reduced when a magnet coil is designed, the coil heating can be reduced, and the reliability of electric elements can be improved; and the magnetic valve can be opened by overcoming larger liquid pressure.

Description

A kind of electromagnet valve arrangement

Technical field

The utility model relates to a kind of electromagnetic valve that is used for hydraulic control device, generally is used for anti-lock braking system in automobiles (ABS system) or automobile electron stabilization system (ESP system).

Background technology

In the conventional hydraulic braking of automobile, the operation by brake pedal makes hydraulic pressure be applied on the master cylinder and then is applied on the wheel cylinder, to brake.When braking force during greater than tire and ground-surface static friction force, wheel can skid on the road surface, cause braking force to descend and wheel steering power decline (because tire and ground-surface dynamic friction coefficient are less than coefficient of static friction), must prevent this skidding to guarantee optimum braking effect, must prevent that also glancing impact from can not control the locking phenomenon that turns to of wheel flutter.Therefore, propose a kind of may command and be applied to the anti-skid brake system of the hydraulic coupling on the wheel cylinder or the generation that the electronic stability system prevents these phenomenons, this antiblock device consists essentially of a plurality of electromagnetic valves, is used for the electronic control unit of control electromagnetic valve (ECU), hydraulic accumulator and Hydraulic Pump.

With reference to Fig. 1, a kind of traditional electromagnetic valve is installed on the valve body, has valve opening on the valve body so that install.The fluid control of this electromagnetic valve partly comprises armature, valve pocket, first elastic component, spool, valve casing, support, second elastic component, throttle seat, valve seat, filtering net, sealing member.Valve casing is contained in whole electromagnetic valve in the valve opening, is connected with valve seat, valve pocket respectively.Spool is contained in the cylindrical valve pocket, can directedly up and down move.The valve pocket open upper end portion is connected with armature, and armature is used to seal valve pocket and attracts spool to move up under the effect of magnet coil (not shown) electromagnetic force.When spool moves up and down its lower end be used for leak free protrude the position to the first segment discharge orifice open, closure.Support is connected with spool, move up and down with spool, and drive throttle seat and move, thereby to egress hole open, closure.Valve seat has import, outlet, is communicated with import, the outlet of valve body respectively.The impurity that filtering net is used for the import from valve body is entered the fluid in the electromagnetic valve intercepts.Sealing member is used for import, outlet are isolated.First elastic component is installed between armature and the spool, and spool and throttle seat are applied downward elastic force.

This traditional electromagnetic valve, because second elastic component is installed between support and the throttle seat, throttle seat has only the electromagnetic attraction of armature to spool to the source of the power that upwardly opens of egress hole.When the relative pressure reduction that exports of import was big, throttle seat was pushed down by hydraulic coupling, at this moment has only bigger electromagnetic force egress hole in time could be opened.Perhaps wait first cutoff port to open earlier, when treating import the pressure reduction of outlet being reduced to a certain predetermined value relatively, egress hole can be opened.But the reaction meeting of total system is comparatively slow like this, influences braking effect.If will obtain bigger electromagnetic force, then need strengthen the electric current of magnet coil, but after strengthening electric current, coil and relevant electrical equipment element heating are bigger, reduce service life.This traditional electromagnetic valve structure of while, the longitudinal length of support is bigger, has increased manufacturing cost.

The utility model content

The technical problems to be solved in the utility model is to realize a kind of electromagnetic valve that is used for anti-skid brake system or electronic stability system, and its dependable performance is durable, and low cost of manufacture.

To achieve these goals, the technical solution adopted in the utility model is: a kind of electromagnet valve arrangement comprises armature, be positioned at armature one side and have the spool at the sealing position of protrusion at the one end, be installed on the valve pocket that armature and the spool outside and guide spool move up and down, be installed in first elastic component between armature and the spool, link to each other with valve pocket one end and have the valve casing of hollow structure, interference fit is placed in outside the spool and stretches out the support that spool end partly is provided with in-flanges, one end and support in-flanges bonded assembly throttle seat, one end is connected and has the valve seat of the hollow structure of inlet hole and egress hole with valve casing, being installed in being used to outside the support within the valve seat intercepts impurity and enters filtering net in the electromagnetic valve, one end is installed in the other end on the throttle seat and is installed in second elastic component on the valve seat.

Described second elastic component, one end is installed in the port of the egress hole open end of valve seat, and the other end is installed on the step of throttle seat.

Throttle seat is provided with and makes the fluid that flows into inlet hole upwards be directed to the vertical passage of seal spool partial sum first segment discharge orifice, and does not have interconnection on the support.

Described second elastic component is embedded in the egress hole on the valve seat, and the one end is fixed on the step of throttle seat port, and the other end is fixed on the step of egress hole inwall.

Described support is provided with and makes the fluid that flows into inlet hole upwards be directed to the interconnection of seal spool partial sum first segment discharge orifice, and vertical passage is not set on the throttle seat.

Described second elastic component, one end is installed on the pad of egress hole opening part of valve seat, and the other end is installed on the step of throttle seat.

Described valve seat is provided with step, and described filtering net lower surface press-fits pad on the valve seat step, and pad is provided with the flange flange that is affixed on the throttle seat outer wall, and its part that is suspended on step is provided with passage.

Described filtering net riveting is in the sunk part of valve seat upper surface.

The elastic force of described second elastic component is less than first elastic component.

Described valve pocket one end outer wall is connected with interference fit with the cooresponding inwall of valve casing, and described valve pocket and valve casing contact surface partly are provided with the hole with the valve casing laser welding.

Advantage of the present utility model is to reduce the requirement to electromagnetic force, promptly can reduce the coil working electric current when the design magnet coil, reduces coil heating, improves the reliability of electric elements; Electromagnetic valve can overcome bigger fluid pressure to be opened, and opens because the elastic force of second elastic component is auxiliary throttle seat, promptly improves the speed of response of electromagnetic valve, makes anti-skid brake system or electronic stability system start-up faster more timely; Help the manufacturing of some part, for example, support can design shortlyer, and for the support that gets by die drawn and punching press, its difficulty of processing and cost reduce.

Description of drawings

Below the content of each width of cloth accompanying drawing expression of the utility model specification sheets and the mark among the figure are made brief description:

Fig. 1 is the section of structure of traditional electromagnetic valve that is used for anti-skid brake system or electronic stability system;

Fig. 2 is the section of structure of the electromagnetic valve of the utility model first embodiment;

Fig. 3 is the section of structure of the electromagnetic valve of the utility model second embodiment;

Fig. 4 is the section of structure of the electromagnetic valve of the utility model the 3rd embodiment.

Major part among the above-mentioned figure is labeled as:

1, armature; 2, valve pocket; 3, first elastic component; 4, spool; 5, valve casing; 6, support; 7, second elastic component; 8, throttle seat; 9, valve seat; 10, filtering net; 11, sealing member.

The specific embodiment

Contrast accompanying drawing below, by description to embodiment, the effect of mutual alignment between the shape of the specific embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and principle of work, manufacturing process etc., be described in further detail, with help those skilled in the art to utility model of the present utility model conceive, technical scheme has more complete, accurate and deep understanding.

Referring to embodiment illustrated in fig. 2 one, according to the electromagnetic valve that is used for anti-skid brake system or electronic stability system described in the utility model, it comprises valve casing 5, armature 1, valve pocket 2, the first elastic components 3, spool 4, support 6, second elastic component 7, throttle seat 8, valve seat 9, filtering net 10, sealing member 11.Wherein valve casing 5 cooperates by the riveting with valve body 20 electromagnetic valve is fixed on the valve body 20, the oral area 5.1 inside rivetings of valve casing 5 by its lower end close up and touch valve seat 9 and be connected with valve seat near the inclined-plane 9.3 of upper ends, valve casing 5 partly is provided with the hole that is used for laser welding by hole 5.2 and valve pocket 2 inwall interference fit and valve pocket 2 with valve casing 5 contact surfaces, valve pocket 2 is used laser welding with valve casing 5 assembling backs along this one week of laser welding hole, thereby valve casing 5 inward hole slope 5.2 are close to the inclined-plane 2.1 of valve pocket 2.Spool 4 can move up and down in valve pocket 2.Valve pocket 2 open ends and armature 1 are by being welded to connect, and armature 1 is used to seal valve pocket 2 and attracts spool 4 to move up under the effect of magnet coil (not shown) electromagnetic force.4.1 pairs of first segment discharge orifices 8.1 of hermetic unit that protruded its lower end when spool 4 moved up and down are opened, closure.Support 6 connects into a rigid body with spool 4 by interference press-fit, move up and down with spool 4, and the flange by the lower end drives throttle seat 8 and moves up and down, thereby to egress hole 9.2 open, closure.Valve seat 9 inlet holes 9.1, egress hole 9.2 are communicated with import 20.2, the outlet 20.3 of valve body 20 respectively.Filtering net 10 is installed within the valve seat 9 outside the support 6, the impurity that is used for the import 20.2 from valve body 20 is entered the fluid in the electromagnetic valve intercepts, egress hole 9.2 upper surfaces of the lower surface of filter screen 10 and valve seat 9 are adjacent to, and the chamfering of filtering net 10 upper ends and the interior inclined-plane 2.2 of valve pocket 2 are adjacent to simultaneously.11 pairs of inlet holes 9.1 of sealing member, egress hole 9.2 are isolated.First elastic component 3 is installed between armature 1 and the spool 4, and spool 4 and throttle seat 8 are applied downward power.Second elastic component is installed between the step 8.3 of plane on egress hole 9.2 openings of valve seat 9 and throttle seat 8, and throttle seat 8 is applied elastic force upwards, and the elastic force of this second elastic component 7 is less than the elastic force of first elastic component 3.Comprise vertical passage 8.2 upwards on the throttle seat 8, thereby make the fluid that flows into import 9.1 upwards be directed to spool 4 hermetic units 4.1 and first segment discharge orifice 8.1, this moment throttle seat 8 structure relative complex, can make by the method for injection moulding, support 6 does not need to make interconnection 6.1 (embodiment two as shown in Figure 3) and makes its manufacturing easier simultaneously.

Referring to embodiment illustrated in fig. 3 two, be that with the first embodiment difference second elastic component 7 is embedded in the egress hole 9.2 on the valve seat 9, to save the space of hollow.For ease of installing, the egress hole 9.2 on throttle seat 8 lower end oral areas and valve seat 9 has step 8.4 and step 9.4 respectively.Support 6 has interconnection 6.1, and guiding flows into the fluid of import 9.1 upward to spool 4 hermetic units 4.1 and first segment discharge orifice 8.1, and this moment, throttle seat 8 can not made vertical passage upwards, thereby made its designs simplification, can make by general machine-tooled method.

Referring to embodiment illustrated in fig. 4 three, be that with the foregoing description difference an end of second elastic component 7 is installed on the pad 30, pad 30 is installed on valve seat 9 egress holes 9.2 oral areas top.For making fluid flow into egress hole 9.2 smoothly from import 9.1, pad 30 is being provided with passage 30.1 with the part that is suspended on step 9.6, on the valve seat 9 step 9.6 is arranged simultaneously.For ease of second elastic component 7 is installed, pad 30 has the flange flange 30.2 that is affixed on throttle seat 8 outer walls.For pad 30 is fixed on the valve seat 9, filtering net 10 lower surfaces press-fit on pad 30, and filtering net 10 is fixing by the part 9.5 of valve seat 9 upper surfaces calendering by riveting simultaneously, and this design can make filtering net 10 structures compact more.The length of the support 6 of this embodiment can be reduced largely, because pad 30 can support and makes support 6 needn't make long inner cylinder face to cooperate with one-sided support throttle seat 8 with the external cylindrical surface of throttle seat 8 top and bottom the lower end of throttle seat 8.

To describe below according to the electromagnetic valve that is used for anti-skid brake system or electronic stability system of the present utility model and how to open and close.Under normal circumstances, because the elastic force of first elastic component 3 is greater than the elastic force of second elastic component 7, the state of electromagnetic valve is adjusted to spool 4 and moves and first segment discharge orifice 8.1 is closed towards throttle seat 8, and spool 4 promotes throttle seats 8 and moves and egress hole 9.2 is closed towards valve seat 9 simultaneously.When the magnet coil energising activated valve, if the pressure of valve body import 20.2 is more or less the same with outlet 20.3 pressure, then spool 4 overcomes first elastic component 3 and the difference of pressure imported and exported drives throttle seat 8 and moves to armature 1, thereby make being connected of inlet hole 9.1 and egress hole 9.2, a large amount of fluids flow through egress hole 9.2, thus the pressure of the hydraulic power line that can increase sharply.If the pressure of valve body import 20.2 differs bigger with outlet 20.3 pressure, the inlet and outlet pressure difference that spool 4 can only overcome the elastic force of first elastic component 3 and act on less (because first segment discharge orifice 8.1 less) of spool 4 moves to armature 1, move to armature 1 and can not overcome the inlet and outlet pressure difference of big (because second cutoff port 9.2 is bigger) that act on throttle seat 8 and drive throttle seat 8, therefore first segment discharge orifice 8.1 can only be opened, this moment, inlet hole 9.1 was under the high brake-pressure, throttle seat is fixed downwards, after this a certain moment, fluid flows into egress hole 9.2 by first segment discharge orifice 8.1 from inlet hole 9.1, therefore inlet hole 9.1 can be reduced to certain below the predetermined value with the difference of pressure of egress hole 9.2, at this moment, being opened egress hole 9.2 thereby throttle seat 8 upwards activates directly is connected inlet hole 9.1 and egress hole 9.2.According to the utility model, cause the actuation force source that throttle seat 8 moves up to have two kinds: a kind of flange that is the electromagnetic attraction of 1 pair of spool 4 of armature drives support 6 lower ends catches on throttle seat 8 and moves up; Another kind of then be the upwards thrust of 7 pairs of throttle seats 8 of second elastic component, this thrust is totally independent of outside the electromagnetic force, and the upwards thrust of traditional 7 pairs of throttle seats 8 of the electromagnetic valve that is used for anti-skid brake system or electronic stability system second elastic component is included in the internal force in armature 1 electromagnetic attraction.

In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or design of the present utility model and technical scheme are directly applied to other occasion without improving, all within protection domain of the present utility model.

Claims

1. electromagnet valve arrangement, comprise armature (1), be positioned at armature (1) one side and have the spool (4) at the sealing position (4.1) of protrusion at the one end, be installed on the valve pocket (2) that armature (1) and spool (4) outside and guide spool (4) move up and down, be installed in first elastic component (3) between armature (1) and the spool (4), link to each other with valve pocket (2) one ends and have the valve casing (5) of hollow structure, interference fit is placed in outside the spool (4) and stretches out the support (6) that spool (4) end partly is provided with in-flanges, one end and support (6) in-flanges bonded assembly throttle seat (8), one end is connected and has the valve seat (9) of the hollow structure of inlet hole (9.1) and egress hole (9.2) with valve casing (5), being installed in being used to outside the support (6) within the valve seat (9) intercepts impurity and enter filtering net (10) in the electromagnetic valve, it is characterized in that: electromagnetic valve comprises that also an end is installed in throttle seat (8) and goes up the other end and be installed in second elastic component (7) on the valve seat (9).

2. electromagnet valve arrangement according to claim 1 is characterized in that: described second elastic component (7) one ends are installed in the port of egress hole (9.2) open end of valve seat (9), and the other end is installed on the step (8.3) of throttle seat (8).

3. electromagnet valve arrangement according to claim 2, it is characterized in that: throttle seat (8) is provided with the vertical passage (8.2) that makes the fluid that flows into inlet hole (9.1) upwards be directed to spool (4) hermetic unit (4.1) and first segment discharge orifice (8.1), and support (6) is gone up no interconnection (6.1).

4. electromagnet valve arrangement according to claim 1, it is characterized in that: described second elastic component (7) is embedded in the egress hole (9.2) on the valve seat (9), the one end is fixed on the step (8.4) of throttle seat (8) port, and the other end is fixed on the step (9.4) of egress hole (9.2) inwall.

5. electromagnet valve arrangement according to claim 4, it is characterized in that: described support (6) is provided with and makes the fluid that flows into inlet hole (9.1) upwards be directed to the interconnection (6.1) of spool (4) hermetic unit (4.1) and first segment discharge orifice (8.1), and vertical passage (8.2) is not set on the throttle seat (8).

6. electromagnet valve arrangement according to claim 1, it is characterized in that: the opening part of the egress hole (9.2) of described valve seat (9) is provided with pad (30), described second elastic component (7) one ends are installed on the pad (30) of valve seat (9), and the other end is installed on the step (8.3) of throttle seat (8).

7. electromagnet valve arrangement according to claim 6, it is characterized in that: described valve seat (9) is provided with step (9.6), described filtering net (10) lower surface press-fits pad (30) on valve seat (9) step (9.6), pad (30) is provided with the flange flange (30.2) that is affixed on throttle seat (8) outer wall, and its part that is suspended on step (9.6) is provided with passage (30.1).

8. electromagnet valve arrangement according to claim 7 is characterized in that: described filtering net (10) riveting is in the sunk part (9.5) of valve seat (9) upper surface.

9. according to claim 1,2,4 or 6 described electromagnet valve arrangements, it is characterized in that: the elastic force of described second elastic component (7) is less than first elastic component (3).

10. electromagnet valve arrangement according to claim 1, it is characterized in that: described valve pocket (2) one end outer walls are connected with interference fit with the cooresponding inwall of valve casing (5), and described valve pocket (2) and valve casing (5) contact surface partly are provided with the hole with valve casing (5) laser welding.