CN2803837Y - Proportional valve with failure protector - Google Patents
Proportional valve with failure protector Download PDFInfo
- Publication number
- CN2803837Y CN2803837Y CN 200520013146 CN200520013146U CN2803837Y CN 2803837 Y CN2803837 Y CN 2803837Y CN 200520013146 CN200520013146 CN 200520013146 CN 200520013146 U CN200520013146 U CN 200520013146U CN 2803837 Y CN2803837 Y CN 2803837Y
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- CN
- China
- Prior art keywords
- piston
- apportioning valve
- valve
- oil groove
- isometrical piston
- 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 - Lifetime
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- Hydraulic Control Valves For Brake Systems (AREA)
Abstract
The utility model discloses a proportional valve with a failure protector. An increasing proportional valve is provided with a failure protector, namely, an isometric piston is arranged in a valve body of the increasing proportional valve, wherein the side face of a guiding cylindrical surface at one end of the isometric piston is provided with an oil groove and the end face of one end of the isometric piston is provided with a sealing gasket. A failure protective screw plug is arranged in the valve body of the increasing proportional valve, wherein a control spring sleeve at the center of the failure protective screw plug is arranged on the other end of the isometric piston and the other end of the isometric piston and an outer ring of the failure protective screw plug are both provided with a sealing ring. An oil chamber at one end of the isometric piston is communicated with an input port of a rear wheel through a pipeline, an oil chamber at the middle part of the isometric piston is respectively communicated with an output port of the rear wheel and an output port of the increasing proportional valve and an oil chamber at the other end of the isometric piston is respectively communicated with an output port and an input port of the front wheel. The utility model is used for braking a car model of which the pipeline is arranged in an H shape, and can sufficiently enhance the utilization rate of attachment coefficient under the condition that the rear wheel is not locked; meantime, the utility model has the function of single chamber failure protection.
Description
Technical field
The utility model relates to the vehicle braking control parts, especially relates to a kind of apportioning valve that has abating protection device.
Background technology
Brake system of car develops so far, and the distribution of braking force is a major issue that troubles people always between the antero posterior axis.At present, domestic most of automobile is proportion of installation valve gear in brake system all, its objective is in order to guarantee locking behind the backgear ratio front-wheel.Wherein the part automobile increases progressively apportioning valve for abundant raising adhesion coefficient utilization has adopted under the situation that guarantees locking behind the backgear ratio front-wheel.The characteristic curve that increases progressively apportioning valve is seen accompanying drawing 2.And the present apportioning valve that increases progressively does not have the fail safe of single chamber.Losing efficacy in single chamber is after ante-chamber channel lost efficacy, and apportioning valve does not just have the function of restriction output oil pressure, and its output oil pressure is equated with the input oil pressure.
Summary of the invention
The purpose of this utility model is to provide a kind of apportioning valve that has abating protection device; realized single chamber fail safe function on the apportioning valve increasing progressively; promptly after ante-chamber lost efficacy, increase progressively apportioning valve and just lose the function that itself limits the trailing wheel oil pressure, output oil pressure is equated with the input oil pressure.
The technical solution adopted in the utility model is: comprise increasing progressively apportioning valve, abating protection device is housed in increasing progressively apportioning valve, isometrical piston promptly is housed in increasing progressively the valve body of apportioning valve, the guide cylinder side of isometrical piston one end had oil groove, on the end face of isometrical piston one end packing seal is housed, increase progressively in the valve body of apportioning valve the fail safe plug screw is housed, the controlling spring at fail safe plug screw center is enclosed within the other end of isometrical piston, little " O " shape seal ring is housed the other end of isometrical piston and fail safe plug screw endoporus forms sealing, and " O " shape seal ring and the valve body inner bore formation sealing that increases progressively apportioning valve greatly are equipped with in the outer ring of fail safe plug screw; The oil pocket of isometrical piston one end is communicated with the trailing wheel input port by the road, and isometrical piston middle part oil pocket is respectively with the trailing wheel delivery port with increase progressively the apportioning valve delivery port and be communicated with, and the oil pocket of the isometrical piston other end is communicated with front-wheel delivery port and front-wheel input port respectively.
The beneficial effect that the utlity model has is: under the normal state of automobile ante-chamber channel, the input port of trailing wheel just links to each other through the chamber that differential piston is housed in the valve body with the delivery port of trailing wheel, and controlled by isometrical piston; After the automobile ante-chamber channel lost efficacy; when the input oil pressure that is input port is zero; when work, isometrical piston just moves down, and the input port of trailing wheel communicates with the oil pipe that the delivery port of trailing wheel just passes through; apportioning valve just loses the function of restriction trailing wheel oil pressure automatically; overcome single chamber fail safe function that existing apportioning valve can't be realized, it is used for the vehicle that brake piping is arranged for " H ", at trailing wheel not under the situation of first locking; fully improve adhesion coefficient utilization, also have single chamber fail safe function simultaneously.
Description of drawings
Fig. 1 is a structural principle scheme drawing of the present utility model;
Fig. 2 is under the oil pressure of front-wheel input port input and situation that the input oil pressure of trailing wheel input port equates, the input and output oil pressure diagram of curves of front-wheel input port and trailing wheel delivery port;
Fig. 3 is that the oil pressure in front-wheel input port input is under zero the situation, the input and output oil pressure diagram of curves of trailing wheel input port and trailing wheel delivery port;
The structural representation of Fig. 4 leather package;
Fig. 5 is the tank structure scheme drawing on the isometrical piston.
Among the figure: 1-fail safe plug screw, 2-copper washer, 3-increase progressively the valve body of apportioning valve; 4-controlling spring, 5-little " O " shape seal rings, 6-big " O " shape seal ring; 7-isometrical piston, 8-leather package, 9-primary cup; 10-differential piston, 11-spring perch, 12-copper washer; 13-preloading spring, 14-secontary cup, 15-adjuster plug; 16-trailing wheel input port; 17-pipeline, 18-trailing wheel delivery port, 19-front-wheel input port; 20-front-wheel delivery port; 21-seal ring, 22-semi arch oil groove, 23-guide cylinder face; 24-square oil groove, 25-flat oil groove.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, the utility model comprises and increases progressively apportioning valve, abating protection device is housed in increasing progressively apportioning valve, isometrical piston 7 promptly is housed in the valve body 3 that increases progressively apportioning valve, guide cylinder face 23 sides of isometrical piston 7 one ends had oil groove, on the end face of isometrical piston 7 one ends packing seal is housed, increase progressively in the valve body 3 of apportioning valve fail safe plug screw 1 is housed, the controlling spring 4 at fail safe plug screw 1 center is enclosed within the other end of isometrical piston 7, the other end of isometrical piston 7 is equipped with little " O " shape seal ring 5 and forms sealing with fail safe plug screw 1 endoporus, and " O " shape seal ring 6 and the valve body 3 endoporus formation sealing that increases progressively apportioning valve greatly are equipped with in the outer ring of fail safe plug screw 1; The oil pocket of isometrical piston 7 one ends 17 is communicated with trailing wheel input port 16 by the road, isometrical piston 7 middle part oil pockets are respectively with trailing wheel delivery port 18 with increase progressively the apportioning valve delivery port and be communicated with, and the oil pocket of isometrical piston 7 other ends is communicated with front-wheel delivery port 20 and front-wheel input port 19 respectively.
Described packing seal is a leather package 8, shown in Fig. 4 (a), or seal ring 21, shown in Fig. 4 (b).
The oil groove excessively that described guide cylinder face 23 sides have is the semi arch oil groove 22 of five equilibrium, shown in Fig. 5 (a); Or square oil groove 24 is shown in Fig. 5 (b); Or flat oil groove 25 is shown in Fig. 5 (c).Described oil groove is 2～4.
Principle of work of the present utility model is as follows:
This increases progressively in the valve body 3 of apportioning valve two valve pockets, and isometrical piston 7 and differential piston 10 are housed respectively, and the principle of work of inner structure in a chamber that differential piston 10 is housed is similar to the principle of work of common apportioning valve, here just is not described in detail.In a chamber of isometrical piston 7 is housed, at the end face of isometrical piston 7 leather package is housed, its effect be under the effect of controlling spring 4 with body cavity surface crush seal mutually, make pipeline 17 isolated with the inner chamber of the valve body 3 that increases progressively apportioning valve.The other end of isometrical piston 7 is equipped with controlling spring 4 and cooperates assembling with fail safe plug screw 1; fail safe plug screw 1 is threaded with the valve body 3 that increases progressively apportioning valve; and make fail safe plug screw 1 and valve body 3 sealings that increase progressively apportioning valve with copper washer 2. on isometrical piston 7 and fail safe plug screw 1, " O " shape seal ring is housed all, makes the inner chamber of the valve body 3 that increases progressively apportioning valve be divided into two chamber that isolate mutually.
Current lumen road just often, when promptly the input oil pressure of front-wheel input port 19 equated with the input oil pressure of trailing wheel input port 16, isometrical piston made leather package be pressed on the surface of internal cavity of valve body 3 under the effect of the oil pressure of front-wheel input port 19 input and controlling spring 4.One chamber of differential piston is housed to trailing wheel delivery port 18 from the input oil pressure of trailing wheel input port 16 with regard to process, at this moment, the input oil pressure of trailing wheel input port 16 and the oil pressure curve of trailing wheel delivery port 18 as shown in Figure 2 preceding two sections broken lines, when the pressure reduction of the oil pressure of the oil pressure of trailing wheel input port 16 and trailing wheel delivery port 18 arrives certain numerical value, isometrical piston 7 is moved down, just pass through pipeline 17 to trailing wheel delivery port 18 from the input liquid of trailing wheel input port 16, at this moment, one section broken line in the oil pressure curve of the input oil pressure of trailing wheel input port 16 and delivery port 18 front and back as shown in Figure 2;
After losing efficacy in current lumen road, when the input oil pressure that is front-wheel input port 19 is zero, the isometrical piston 7 of this moment only is controlled the effect of spring 4, when the input oil pressure of trailing wheel input port 16 does not also surpass the flex point of first section broken line of Fig. 2, isometrical piston 7 just moves down under the effect of the input oil pressure of trailing wheel input port 16, at this moment, the oil pressure curve of the input oil pressure of trailing wheel input port 16 and trailing wheel delivery port 18 as shown in Figure 3.
Claims (4)
1, a kind of apportioning valve that has abating protection device, comprise and increase progressively apportioning valve, it is characterized in that: abating protection device is housed in increasing progressively apportioning valve, isometrical piston (7) promptly is housed in increasing progressively the valve body of apportioning valve (3), guide cylinder face (23) side of isometrical piston (7) one ends had oil groove, on the end face of isometrical piston (7) one ends packing seal is housed, increase progressively in the valve body (3) of apportioning valve fail safe plug screw (1) is housed, the controlling spring (4) at fail safe plug screw (1) center is enclosed within the other end of isometrical piston (7), the other end of isometrical piston (7) is equipped with little " O " shape seal ring (5) and forms sealing with fail safe plug screw (1) endoporus, and " O " shape seal ring (6) and valve body (3) the endoporus formation sealing that increases progressively apportioning valve greatly are equipped with in the outer ring of fail safe plug screw (1); The oil pocket of isometrical piston (7) one ends (17) by the road is communicated with trailing wheel input port (16), isometrical piston (7) middle part oil pocket is respectively with trailing wheel delivery port (18) with increase progressively the apportioning valve delivery port and be communicated with, and the oil pocket of isometrical piston (7) other end is communicated with front-wheel delivery port (20) and front-wheel input port (19) respectively.
2, a kind of apportioning valve that has abating protection device according to claim 1 is characterized in that: described packing seal is leather package (8) or seal ring (21).
3, a kind of apportioning valve that has abating protection device according to claim 1 is characterized in that: the oil groove excessively that described guide cylinder face (23) side has is the semi arch oil groove (22) of five equilibrium, square oil groove (24) or flat oil groove (25).
4, a kind of apportioning valve that has abating protection device according to claim 3, it is characterized in that: described oil groove is 2～4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520013146 CN2803837Y (en) | 2005-07-12 | 2005-07-12 | Proportional valve with failure protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520013146 CN2803837Y (en) | 2005-07-12 | 2005-07-12 | Proportional valve with failure protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2803837Y true CN2803837Y (en) | 2006-08-09 |
Family
ID=36909135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520013146 Expired - Lifetime CN2803837Y (en) | 2005-07-12 | 2005-07-12 | Proportional valve with failure protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2803837Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332838C (en) * | 2005-07-12 | 2007-08-22 | 浙江亚太机电股份有限公司 | Proportional valve having failure protective device |
-
2005
- 2005-07-12 CN CN 200520013146 patent/CN2803837Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332838C (en) * | 2005-07-12 | 2007-08-22 | 浙江亚太机电股份有限公司 | Proportional valve having failure protective device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20050712 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |