CN201526722U - Safety valve provided with by-pass valve and suitable for power steering gear - Google Patents
Safety valve provided with by-pass valve and suitable for power steering gear Download PDFInfo
- Publication number
- CN201526722U CN201526722U CN2009202276025U CN200920227602U CN201526722U CN 201526722 U CN201526722 U CN 201526722U CN 2009202276025 U CN2009202276025 U CN 2009202276025U CN 200920227602 U CN200920227602 U CN 200920227602U CN 201526722 U CN201526722 U CN 201526722U
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- steel ball
- steering gear
- safety valve
- valve
- spring
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- Expired - Fee Related
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Abstract
The utility model relates to a safety valve provided with a by-pass valve and suitable for a power steering gear, which belongs to the technical field of automotive power steering gears. The safety valve consists of a by-pass valve steel ball, a pagoda spring, a positioning screw, a safety valve steel ball, a valve body, a steel ball support block, a spring and an adjusting screw, wherein the by-pass valve steel ball, the pagoda spring and the positioning screw are mounted at the upper part of the valve body; and the safety valve steel ball, the steel ball support block, the spring and the adjusting screw are mounted at the lower part of the valve body. The safety valve ensures that the steering gear is always kept within the safe pressure under the maximum operating pressure, and a circulation loop channel is formed in the steering gear through the by-pass valve. The utility model solves the problems that abnormal knocking is generated and oil spills from an oil tank when an oil pump is started again, because air pockets are formed due to the negative pressure generated in the steering gear when the oil pump hangs up in the steering process of the present steering gear, therefore, the security and the comfort for operating the steering gear are improved.
Description
Technical field:
The utility model relates to a kind of safety valve that is applicable to the band bypass valve of power steering gear, belongs to the automobile power steering technical field.
Background technique:
Power steering gear is a kind of transmission device that mechanical transmission combines with hydraulic transmission, belong to automobile steering system, wherein the purpose of mechanical driving part is to allow come from power on the vehicle steering wheel according to correct route transmission, the purpose of hydraulic transmission part is the manipulation light and flexible that makes steering wheel, improve control stability, and have travelling comfort and improve running safety when car steering person is handled.
At present, when being subjected to very big ground drag, the pressure of oil pump can constantly raise common power steering gear in running, thereby makes each mechanical part of steering system be subjected to very big load, can cause the numerous parts distortion when serious.Simultaneously because the continuous rising of pressure, the heating value of hydraulic system also can constantly increase, and so also can cause the interior Sealing of commutator to lose efficacy when high temperature and produces leakage.
In addition, power steering gear when oil pump quits work, does not have hydraulic booster except bringing into play the function of oneself under the working state of oil pump normal fuel injection, but vehicle must travel again, when turning to, commutator need be remained in operation and just can be finished travelling of automobile.And the commutator of using is at present shut down owing to oil pump in the process that turns to, whole oil circuit can not get normal circulation, be easy to generate negative pressure in the commutator, can cause three results to occur like this: the firstth, the feel that turns to is heavy all the more, the more energy of meeting loss during driver operation; The secondth, under the influence of negative pressure, in commutator, produce vacuum easily and form air pocket, when starting once more, oil pump may produce abnormal sound; The 3rd is the oil return circuit formation impact of the generation meeting of negative pressure to steering system, causes fluid to overflow in oil tank.
Summary of the invention:
The purpose of this utility model is, provides a kind of Maximum operating pressure of steering system that can guarantee to remain in the safety pressure, makes the commutator can be to system protection when overpressure; And form a circuit loop in that commutator is inner by bypass valve; after oil pump was shut down, the oil-feed oil circuit of commutator was communicated with oil return circuit, reduced the probability that abnormal sound occurs; the safety valve of the Security of raising commutator operation and the band bypass valve that is applicable to power steering gear of travelling comfort
The utility model is to realize above-mentioned purpose by the following technical solutions:
This safety valve that is applicable to the band bypass valve of power steering gear is made of bypass valve steel ball, pagoda spring, positioning screwn, safety valve steel ball, valve body, steel ball support block, spring, adjustment screw, it is characterized in that: the top of valve body is shaped on a horizontal hole, the bottom of valve body is shaped on a upright opening, bypass valve steel ball, pagoda spring and positioning screwn are equipped with from the inside to the outside successively in horizontal hole and upright opening UNICOM in the horizontal hole; Safety valve steel ball, steel ball support block, spring, adjustment screw and O shape circle are housed in the upright opening from top to bottom successively.
The utility model beneficial effect compared with prior art is:
This is applicable to that the safety valve of the band bypass valve of power steering gear passes through bypass valve and safety valve combination can be guaranteed to remain in the safety pressure when steering system is in Maximum operating pressure, and commutator is protected system when overpressure.And in circuit return path of the inner formation of commutator, behind the oil pump hang-up, the oil-feed oil circuit of commutator is communicated with oil return circuit, reduces the probability that abnormal sound occurs, and improves the Security and the travelling comfort of commutator operation by bypass valve.
The commutator that has solved present use because oil pump is shut down, and whole oil circuit can not get normal circulation, is easy to generate negative pressure in the commutator, causes the feel that turns to heavy all the more in steering procedure, can the more energy of loss during driver operation; And under the influence of negative pressure, produce vacuum in the commutator and form air pocket, when oil pump starts once more, can produce abnormal sound, and negative pressure forms to the oil return circuit of steering system and impacts, the problem that causes fluid to overflow in the oil tank.The utility model is simple in structure, simultaneously integrated above-mentioned two kinds of functions, and also saved the space satisfying under the prerequisite of its function layout to commutator.
Description of drawings:
Accompanying drawing is the structural representation of safety valve that is applicable to the band bypass valve of power steering gear.
Among the figure: 1, commutator, 2, the bypass valve steel ball, 3, pagoda spring, 4, positioning screwn, 5, the safety valve steel ball, 6, valve body, 7, steel ball support block, 8, spring, 9, adjust screw, 10, O shape circle, 11, holding nut, 12, filler opening, 13, return opening, 14, oil-feed oil circuit, 15, oil return circuit.
Embodiment:
This safety valve that is applicable to the band bypass valve of power steering gear is made of bypass valve steel ball 2, pagoda spring 3, positioning screwn 4, safety valve steel ball 5, valve body 6, steel ball support block 7, spring 8 and adjustment screw 9.The top of valve body 6 is shaped on a horizontal hole, and the bottom of valve body 6 is shaped on a upright opening, by hole UNICOM, is shaped on the hole that communicates with oil-feed oil circuit 14 and oil return circuit 15 on the horizontal hole between horizontal hole and the upright opening, is shaped on the hole that communicates with oil return circuit 15 on the upright opening.Bypass valve steel ball 2, pagoda spring 3 and positioning screwn 4 are housed in the horizontal hole from the inside to the outside successively; Safety valve steel ball 5, steel ball support block 7, spring 8 are housed in the upright opening from top to bottom successively, adjust screw 9 and O shape circle 10 (referring to accompanying drawings).
Bypass valve steel ball 2, pagoda spring 3, positioning screwn 4 is arranged in the top of whole valve body 6, and valve body 6 inner faces have two sealing part, and first is the sealing part that contacts with bypass valve steel ball 2, and second is the sealing part that contacts with safety valve steel ball 5.Pagoda spring 3 is enclosed within on the positioning screwn 4, and the small end face of pagoda spring 3 withstands on first sealing part of valve body with bypass valve steel ball 2, and the power that pagoda spring 3 acts on the bypass valve steel ball 2 is very little, only is that first sealing part that makes steel ball can remain on valve body gets final product.
Safety valve steel ball 5 is supported by steel ball support block 7, spring 8 is housed below the steel ball support block 7, the active force of 8 pairs of safety valve steel balls 5 of spring is adjusted by adjusting screw 9, and the power that the amount of force of spring 8 should act on the safety valve steel ball 5 with the MTP of commutator design is consistent.After the active force adjustment of adjusting 9 pairs of springs 8 of screw finishes, should sentence just locking in the 9 upper punch rivetings two of adjustment screw, make the state of spring 8 keep certain.
This will be fixed with the safety valve of bypass valve by holding nut 11 after being applicable to that the safety valve of the band bypass valve of power steering gear is contained in the mounting hole of commutator 1, and the excircle part of holding nut 11 is furnished with O shape and encloses 10 and seal, and prevents that fluid from leaking.
When the power steering gear proper functioning; oil pump is given the commutator delivering oil by the filler opening 12 of commutator; the pressure of this fluid changes along with the load of the wheel resistance of tire (in the face of); when pressure is raised to the designed maximum pressure of commutator; the thrust that this maximum pressure acts on the safety valve steel ball 5 makes spring 8 compressive strains by steel ball support block 7; safety valve steel ball 5 produces displacement; make safety valve steel ball 5 and second sealing part of valve body 6 produce the gap; the fluid of oil-feed oil circuit 14 has been got back to oil return circuit 15 by this gap like this; oil-feed oil circuit 14 is communicated with oil return circuit 15, has realized the protection of maximum pressure.
When the power steering gear non-normal working (when breaking down shutdown) because of oil pump; but vehicle also needs to continue to travel; when commutator turns to since oil pump shut down can't fuel feeding; like this; the oil-feed oil circuit 14 of commutator can produce certain negative pressure; this suction function is on bypass valve steel ball 2; make bypass valve steel ball 2 overcome the thrust of pagoda spring 3; first sealing part at bypass valve steel ball 2 and valve body 6 promptly can produce the gap like this; therefore; the fluid of oil return circuit 15 then flows in the oil-feed oil circuit 14 from gap location, and the oil-feed oil circuit 14 that forms commutator is communicated with oil return circuit 15, realizes the inner loop of commutator.Solved under the influence of negative pressure and in commutator, to produce vacuum easily and form air pocket, when oil pump starts once more, produced the problem of abnormal sound, improved the Security and the travelling comfort of commutator operation.
Claims (1)
1. safety valve that is applicable to the band bypass valve of power steering gear, it is made of bypass valve steel ball (2), pagoda spring (3), positioning screwn (4), safety valve steel ball (5), valve body (6), steel ball support block (7), spring (8), adjustment screw (9), it is characterized in that: the top of valve body (6) is shaped on a horizontal hole, the bottom of valve body (6) is shaped on a upright opening, bypass valve steel ball (2), pagoda spring (3) and positioning screwn (4) are equipped with from the inside to the outside successively in horizontal hole and upright opening UNICOM in the horizontal hole; Safety valve steel ball (5), steel ball support block (7), spring (8) are housed in the upright opening from top to bottom successively, adjust screw (9) and O shape circle (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202276025U CN201526722U (en) | 2009-08-21 | 2009-08-21 | Safety valve provided with by-pass valve and suitable for power steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202276025U CN201526722U (en) | 2009-08-21 | 2009-08-21 | Safety valve provided with by-pass valve and suitable for power steering gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201526722U true CN201526722U (en) | 2010-07-14 |
Family
ID=42518008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202276025U Expired - Fee Related CN201526722U (en) | 2009-08-21 | 2009-08-21 | Safety valve provided with by-pass valve and suitable for power steering gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201526722U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104443015A (en) * | 2014-11-19 | 2015-03-25 | 大连瑞谷科技有限公司 | Extra-large-cylinder-diameter hydraulic power steering gear with safety valve |
-
2009
- 2009-08-21 CN CN2009202276025U patent/CN201526722U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104443015A (en) * | 2014-11-19 | 2015-03-25 | 大连瑞谷科技有限公司 | Extra-large-cylinder-diameter hydraulic power steering gear with safety valve |
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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: 20100714 Termination date: 20120821 |