CN201143929Y

CN201143929Y - Intake valve

Info

Publication number: CN201143929Y
Application number: CNU2007201875542U
Authority: CN
Inventors: 林志团; 陈东林; 叶文周
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2007-12-19
Filing date: 2007-12-19
Publication date: 2008-11-05
Anticipated expiration: 2017-12-19

Abstract

A liquid inlet valve includes a valve, a valve core, a valve needle component and a steel ball; the valve is hollow; the middle area of the side wall of the valve is provided with a diversion hole; the center of the lower end of the valve is provided with an open hole communicated with the inner cavity of the valve; the valve needle component is sealed and connected with an opening on the upper end of the inner cavity of the valve, wherein, the lower end of the valve is also provided with a reflux through hole communicated with the inner cavity of the valve; the lower port of the reflux through hole is provided with a flared part; the steel ball is arranged in the flared part and can seal and cover the reflux through hole; the lower part of the valve core is arranged above the open hole, matches with and is fixedly connected with the inner wall of the open hole; the center in the valve core is provided with a through hole; a valve needle in the valve component which can be controlled to move up and down is arranged in the inner cavity of the valve; the lower end surface of the valve needle is controlled to reject to or fall apart from the upper port of the through hole of the valve core, so that the through hole is connected with or disconnected from the inner cavity of the valve. The liquid inlet valve of the utility model improves the processing technique, and improves the requirement for consistency of response speed and performance of the liquid inlet valve.

Description

A kind of feed liquor valve

Technical field

The utility model is about a kind of feed liquor valve, particularly about a kind of feed liquor valve of the speed of response that is used to regulate braking liquid in the anti-locking system for car (ABS).

Background technology

Anti-blocking brake system of automobile abbreviates ABS as, and it is an important device that improves vehicle passive safety.Automobile ABS is that a kind of collection of high-accuracy type is mechanical, electrical, liquid is the product of one, it all has very high requirement to the structure and the performance of each parts, especially to the speed of response consistency of performance of each feed liquor valve in the ABS system require even more importantly, it is one of principal element that influences the ABS performance.

Feed liquor valve arrangement more complicated in the existing automobile ABS, as shown in Figure 1, feed liquor valve among this ABS comprises valve body 1, annular orifice flow plate 2, spool 3, needle assembly 4 and steel ball 5, described valve body 1 is a hollow, be provided with the pod apertures 6 that connects the outside and inner chamber of valve body 1 at the zone line of the sidewall of valve body 1, the center, lower end of valve body 1 has the perforate 10 that communicates with the inner chamber of valve body 1; Described annular orifice flow plate 2 is arranged in the upper part of described perforate 10 and cooperates and captive joint with the inwall of described perforate 10, and the endoporus of annular orifice flow plate 2 communicates with described perforate 10; Described spool 3 is a blocks, be provided with the through hole 7 that top port is a bell in the central area of spool 3 upper surfaces, depart from spool 3 on the end face of its center shaft and be provided with the backflow through hole 8 that bottom port is a bell, described spool 3 is positioned at the inner chamber of valve body 1 and is fixedly installed on the upper surface of annular orifice flow plate 2 and matches with annular orifice flow plate 2, through hole 7 on the spool 3 communicates with the endoporus of annular orifice flow plate 2, and the backflow through hole 8 on the spool 3 matches to merge with annular orifice flow plate 2 and communicates with valve body 1 described perforate 10; Described needle assembly 4 is also captiveed joint with the upper end open sealing of the inner chamber of valve body 1, the needle that can controllably move up and down 9 of needle assembly 4 is arranged in the inner chamber of valve body 1, the lower surface of this needle 9 controllably against or leave the upper port of through hole 7 of described spool 3 so that the inner chamber UNICOM of described through hole 7 and described valve body 1 or open close; But described steel ball 5 is below the 8 bottom bells of the backflow through hole between annular orifice flow plate 2 and the spool 3 and this through hole 8 of capping.

Because annular orifice flow plate 2 and spool 3 in the existing feed liquor valve are small-sized parts, and it is very high to the requirement on machining accuracy of part, this will make that processing top port on small-sized spool 3 parts is that through hole 7 and the bottom port of bell is that the backflow through hole 8 of bell just becomes difficult unusually, in addition, because annular orifice flow plate 2 and spool 3 is small-sized, therefore when assembling, be difficult to guarantee its assembly precision and cooperate requirement, cause the speed of response variation of feed liquor valve, can not guarantee effectively the coherence request of feed liquor valve on aspect of performances such as speed of response.In order to solve above-mentioned processing and assembly problem, and improve the conformability of performance such as ABS feed liquor response valve speed, many auto producers have all spent a large amount of funds on technologies such as the part manufacturing of feed liquor valve, processing, as buy external import processing and rigging equipment etc., this has not only increased the cost expenditure of manufacturing, and does not fundamentally solve the problem of feed liquor valve aspect consistency of performance such as speed of response.

The utility model content

The purpose of this utility model is to solve the problem that existing feed liquor valve exists aspect processing, satisfy the coherence request of feed liquor valve at aspect of performances such as speed of response, provide a kind of simple in structure, easy to process, and meet a kind of feed liquor valve of feed liquor valve at aspect of performance coherence requests such as speed of response.

Feed liquor valve of the present utility model comprises valve body, spool, needle assembly and steel ball, described valve body is a hollow, be provided with the pod apertures that connects the outside and inner chamber of valve body at the zone line of the sidewall of valve body, the center, lower end of valve body has the perforate that communicates with the inner chamber of valve body, described needle assembly is also captiveed joint with the upper end open sealing of the inner chamber of valve body, wherein, also has the backflow through hole that communicates with the inner chamber of valve body in the lower end of described valve body, the lower port of backflow through hole has flared part, but described steel ball is contained in this flared part and capping should the backflow through hole; The bottom of described spool is arranged in the upper part of described perforate and cooperates and captive joint with the inwall of described perforate, the inside center of spool has through hole, the needle that can controllably move up and down of described needle assembly is arranged in the inner chamber of valve body, the lower surface of this needle controllably against or leave the upper port of through hole of described spool so that the inner chamber UNICOM of described through hole and described valve body or open close.

Feed liquor valve of the present utility model, owing to cancelled the backflow through hole on the former spool, and should be arranged on the valve body by the backflow through hole, setting has not only reduced the difficulty of processing of spool like this, and improved processing technology, it is simple more, reliable that feasible processing becomes, and this feed liquor valve has also been saved the cost of processing and assembling when satisfying its speed of response consistency of performance requirement.

Description of drawings

Fig. 1 is existing feed liquor valve arrangement scheme drawing;

Fig. 2 is a feed liquor valve arrangement scheme drawing of the present utility model.

The specific embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.

As shown in Figure 2, feed liquor valve of the present utility model comprises valve body 1, spool 3, needle assembly 4 and steel ball 5, described valve body 1 is a hollow, be provided with the pod apertures 6 that connects the outside and inner chamber of valve body 1 at the zone line of the sidewall of valve body 1, the center, lower end of valve body 1 has the perforate 10 that communicates with the inner chamber of valve body 1, described needle assembly 4 is also captiveed joint with the upper end open sealing of the inner chamber of valve body 1, wherein, also has the backflow through hole 8 that communicates with the inner chamber of valve body 1 in the lower end of described valve body 1, the lower port of backflow through hole 8 has flared part 25, but described steel ball 5 is contained in this flared part 25 and cappings should backflow through hole 8; The bottom of described spool 3 is arranged in the upper part of described perforate 10 and cooperates and captive joint with the inwall of described perforate 10, the inside center of spool 3 has through hole 7, the needle that can controllably move up and down 9 of described needle assembly 4 is arranged in the inner chamber of valve body 1, the lower surface of this needle 9 controllably against or leave the upper port of through hole 7 of described spool 3 so that the inner chamber UNICOM of described through hole 7 and described valve body 1 or open close.Under the preferable case, the top port of the through hole 7 of described spool 3 is a bell; The enlarging of described backflow through hole 8 bottom ports is a bell.

In order to control the flow rate of liquid of feed liquor valve effectively, being provided with the bottom with convex edge 13, bottom in the lower part of described perforate 10 is the hollow sleeve 12 of opening, the upper end of this hollow sleeve 12 has the cutoff port 11 of the through hole 7 of the inner chamber of the described hollow sleeve 12 of UNICOM and described spool 3, captive joint with the lower surface of described valve body 1 in described convex edge 13, and the part of convex edge 13 covers the part of the described flared part 25 of described backflow through hole 8, and described steel ball 5 is contained in this flared part 25.

In order to protect the feed liquor valve better; prevent that the impurity in the braking liquid from entering in the valve body; feed liquor valve of the present utility model can also comprise end face filter screen 14; described end face filter screen 14 comprises filter screen 15 and housing 16; described housing 16 is a basin shape; be provided with inlet opening 17 on the basin bottom surface of basin shape housing 16, filter screen 15 is fixedly installed on the basin bottom surface of basin shape housing 16 and covers inlet opening 17.Under the preferable case, described filter screen 15 is fixedly installed on the basin shape housing 16 basin bottom surface outward; Described end face filter screen 14 is positioned at the bottom of feed liquor valve body 1, and the bottom outside wall of the upper port of the basin shape housing 16 of end face filter screen 14 and valve body 1 closely cooperates and is fixed together.

Feed liquor valve of the present utility model can also comprise internal screen 18, described internal screen 18 comprises sleeve shaped housing 19 and screen cloth 20, have the inner chamber of UNICOM's valve body 1 and the tap hole 21 of described pod apertures 6 on the sidewall of described sleeve shaped housing 19, described screen cloth 20 is positioned on the inwall of sleeve shaped housing 19 and covers tap hole 21; Described internal screen 18 is positioned at the inner chamber of valve body 1, and the sidewall of the outer wall of sleeve shaped housing 19 and valve body 1 inner chamber fits.The utilization of described internal screen 18 helps further filtering braking liquid, so that protect the ABS system better.

The following describes the working process of feed liquor valve of the present utility model.

After feed liquor valve of the present utility model assembles according to as shown in Figure 2 structure, valve bonnet in the needle assembly 4 22 is injected in the magnet coil, after the magnet coil energising, feed liquor armature 23 in the needle assembly 4 is magnetized, under the effect of magnetic force, feed liquor armature 23 drive needles 9 overcome the application force of stage clip 24 and move downward, and make the top tapered mouth applying sealing of the head sphere and the through hole 7 on the spool 3 of needle 9, stop braking liquid to enter valve pocket.If the braking oil pressure in the valve pocket is too high, the flared part 25 of the lower port of the backflow through hole 8 in steel ball 5 and the valve body 1 can be separated, make the brake snub liquid that is deposited in the feed liquor valve pocket flowing back into the abs braking master cylinder through the cutoff port 11 on the hollow sleeve 12 under the effect of ABS system pressure, play the effect of shunting; After the magnet coil outage, the magnetic of feed liquor armature 23 disappears, needle 9 upward movement and make feed liquor armature 23 get back to initial position under the effect of stage clip 24, this moment, needle 9 head spheres separated with the top tapered mouth of through hole 7 on the spool 3, steel ball 5 is with the bell place sealing of backflow through hole 8 under the effect of ABS system pressure, at this moment, braking liquid, is entered in the valve pocket of feed liquor valve from the through hole 7 of spool 3 through the cutoff port 11 on the hollow sleeves 12 by the inlet opening on the end face filter screen 14 17.The periodicity power on/off of feed liquor valve of the present utility model by magnet coil makes the top tapered mouth of the through hole 7 on needle 9 head spheres and the spool 3 carry out periodicity and seals and separate, thus the turnover of control brake liquid.

Feed liquor valve of the present utility model is by changing the version of feed liquor valve, not only reduced the difficulty of processing of feed liquor valve part, also guaranteed the conformability of feed liquor valve simultaneously at aspect of performances such as speed of response, this feed liquor valve can be used the riveted and fixed technology of valve bonnet in the needle assembly instead laser welding process, thereby can further improve the leak tightness of needle assembly.

Claims

1, a kind of feed liquor valve, this feed liquor valve comprises valve body (1), spool (3), needle assembly (4) and steel ball (5), described valve body (1) is a hollow, be provided with the pod apertures (6) that connects the outside and inner chamber of valve body (1) at the zone line of the sidewall of valve body (1), the center, lower end of valve body (1) has the perforate (10) that communicates with the inner chamber of valve body (1), described needle assembly (4) is also captiveed joint with the upper end open sealing of the inner chamber of valve body (1), it is characterized in that, also has the backflow through hole (8) that communicates with the inner chamber of valve body (1) in the lower end of described valve body (1), the lower port of backflow through hole (8) has flared part (25), described steel ball (5) be contained in this flared part (25) but in and capping should backflow through hole (8); The bottom of described spool (3) is arranged in the upper part of described perforate (10) and cooperates and captive joint with the inwall of described perforate (10), the inside center of spool (3) has through hole (7), the needle that can controllably move up and down (9) of described needle assembly (4) is arranged in the inner chamber of valve body (1), the lower surface of this needle (9) controllably against or leave the upper port of through hole (7) of described spool (3) so that the inner chamber UNICOM of described through hole (7) and described valve body (1) or open close.

2, feed liquor valve according to claim 1, it is characterized in that, being provided with the bottom with convex edge, bottom (13) in the lower part of described perforate (10) is the hollow sleeve (12) of opening, the upper end of this hollow sleeve (12) has the cutoff port (11) of the through hole (7) of the inner chamber of the described hollow sleeve of UNICOM (12) and described spool (3), and captive joint with the lower surface of described valve body (1) described convex edge (13).

3, feed liquor valve according to claim 2 is characterized in that, the part of described convex edge (13) covers the part of the described flared part (25) of described backflow through hole (8), and described steel ball (5) is contained in this flared part (25).

4, feed liquor valve according to claim 1 and 2 is characterized in that, the top port of the through hole (7) of described spool (3) is a bell; The described flared part (25) of described backflow through hole (8) is a bell.

5, feed liquor valve according to claim 1, it is characterized in that, this feed liquor valve also comprises end face filter screen (14), described end face filter screen (14) comprises filter screen (15) and housing (16), described housing (16) is a basin shape, be provided with inlet opening (17) on the basin bottom surface of basin shape housing (16), filter screen (15) is fixedly installed on the basin bottom surface of basin shape housing (16) and covers inlet opening (17); Described end face filter screen (14) is positioned at the bottom of feed liquor valve body (1), and the bottom outside wall of the upper port of the basin shape housing (16) of end face filter screen (14) and valve body (1) closely cooperates and is fixed together.

6, feed liquor valve according to claim 1, it is characterized in that, this feed liquor valve also comprises internal screen (18), described internal screen (18) comprises sleeve shaped housing (19) and screen cloth (20), have the inner chamber of UNICOM's valve body (1) and the tap hole (21) of described pod apertures (6) on the sidewall of described sleeve shaped housing (19), described screen cloth (20) is positioned on the inwall of sleeve shaped housing (19) and covers tap hole (21); Described internal screen (18) is positioned at the inner chamber of valve body (1), and the sidewall of the outer wall of sleeve shaped housing (19) and valve body (1) inner chamber fits.