CN201916176U - Steering pump flow control valve - Google Patents
Steering pump flow control valve Download PDFInfo
- Publication number
- CN201916176U CN201916176U CN2010206364899U CN201020636489U CN201916176U CN 201916176 U CN201916176 U CN 201916176U CN 2010206364899 U CN2010206364899 U CN 2010206364899U CN 201020636489 U CN201020636489 U CN 201020636489U CN 201916176 U CN201916176 U CN 201916176U
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- China
- Prior art keywords
- valve
- pressure cavity
- low
- hyperbaric chamber
- valve body
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- Expired - Fee Related
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Abstract
The utility model relates to an automobile power steering pump flow control valve which is provided with a valve body, an oil outlet joint, a high pressure cavity positioned in the oil outlet joint and a low pressure cavity positioned in the valve body, wherein one side in the valve body is provided with an overflow port and a fluid channel for communicating the high pressure cavity with the low pressure cavity, and the channel is communicated with the high pressure cavity through a damping hole; the low pressure cavity is internally provided with a sliding valve part which is in dynamic sealing fit with the internal circumference of the valve body, one sliding valve spring props the sliding valve part to the high pressure cavity on the axial direction of the valve body, so that the sliding valve part can make axial movement under the action of the joint force of the high pressure cavity, the low pressure cavity and the sliding valve spring and is positioned on an appropriate axial direction; and the sliding valve part comprises a low pressure cavity part positioned in the low pressure cavity and a valve rod, and the valve rod is positioned at one end of the high pressure cavity and penetrates out of a throttle hole in one end of the oil outlet joint to extend into the high pressure cavity. In the steering pump flow control valve, the valve rod has different diameters, and excludes a throttle seat, a throttle valve core, a throttle spring and a joint sleeve.
Description
Technical field
The utility model relates to the flow control valve of steering pump of automobile.
Background technique
A lot of automobiles are furnished with power steering pump, to improve driving comfortability, are furnished with flow control valve in it.The flow control valve of this power steering pump early is used for load-carrying vehicle, and it is essentially the fixed restriction shape of the mouth as one speaks.For Light-duty Vehicle,,, then when running at high speed, can produce and turn to unstable sensation if adopt the steering pump flow control valve of traditional fixed throttle port because its engine speed is very high such as car.Control valve rod in the steering pump flow control device of Cherokee has three sections different diameter parts, so that the flow control curve is on a declining curve when high speed.But this flow control device has throttle seat, throttling valve core, throttling spring and joints sleeve, so complex structure, manufacturing process complexity, difficulty of processing is big, cost is high.
Summary of the invention
The utility model is intended to overcome above-mentioned the deficiencies in the prior art, creates a kind of brand-new automobile power steering pump flow control valve, and it not only makes the flow control curve on a declining curve when high vehicle speeds, and simple in structure, easy processing, cost are low.
Automobile power steering pump flow control valve of the present utility model has valve body, delivery connection, be positioned at the hyperbaric chamber of delivery connection, be positioned at the low-pressure cavity of valve body; A side is provided with flow-off and the fluid passage that is used for hyperbaric chamber and low-pressure cavity UNICOM in the valve body, and this passage is through a damping hole and hyperbaric chamber UNICOM; Be provided with the gliding valve that cooperates with the inner circumference motive sealing of its valve body in the low-pressure cavity, one slide valve spring valve body axially on this gliding valve is supported to hyperbaric chamber, it can be moved axially under the force action of hyperbaric chamber and low-pressure cavity and slide valve spring, and be positioned on the suitable axial position; Described gliding valve comprises a low-pressure cavity part and a valve rod that is positioned at low-pressure cavity, and this valve rod is positioned at hyperbaric chamber one end and the throttle orifice that passes on delivery connection one end extend into hyperbaric chamber; In the utility model, the diameter of valve rod is not quite similar.
Valve stem part is in the hyperbaric chamber position, its end face is subjected to the pressure effect of hyperbaric chamber to make gliding valve to low-pressure cavity movement tendency be arranged, an other end of gliding valve has acting force of the spring and makes the trend of the oriented hyperbaric chamber motion of valve through the pressure acting in conjunction of a damping hole and hyperbaric chamber UNICOM, makes valve be in the position of relative equilibrium under the acting in conjunction of two kinds of power; The pressure of hyperbaric chamber can not make gliding valve move to low-pressure cavity when pump speed is relatively lower, and guiding valve is in rigging position, does not have the fluid overflow, and valve rod a section is in the working position, and oil pump flow is in lifting position; When pump speed increases, because oil outlet diameter of phi D is smaller, can produces pressure reduction gliding valve is moved to low-pressure cavity, valve rod is in b section working position, and oil pump stream is in the position by high step-down; When pump speed increases again, because oil outlet diameter of phi D is smaller, can produces bigger pressure reduction valve is moved to low-pressure cavity, valve rod is in c section working position, and oil pump stream is in the position of minimum discharge.
Steering pump flow control valve of the present utility model reduces so output flow can raise with pump speed owing to adopted change diameter valve rod.
Can save throttle seat of the prior art, throttling valve core, throttling spring and joints sleeve in the steering pump flow control valve of the present utility model, so simplify the structure.Particularly, each parts in the steering pump flow control valve of the present utility model only need car, bore two kinds of machinings, and also need hinge and mill in the prior art, so the utility model has also been simplified manufacturing process, have reduced cost.Say on the macroscopic view, reduce material and can cut down the consumption of energy man-hour, help environmental friendliness.With regard to MANUFACTURER, cost reduces greatly, and the market competitiveness obviously can significantly improve.
The diameter of described valve rod is bigger at hyperbaric chamber one end, and less near low-pressure cavity one end, it can be a continually varying, that is, valve rod is one round table-like, and this form of implementation can reduce that pump speed changes and the shake that causes.Yet the preferred valve rod of the utility model is made of three different-diameter sections, and the most close low-pressure cavity section diameter minimum increases then successively, can make the utility model and prior art more close like this, thereby helps and being connected of prior art.
Description of drawings
Fig. 1 is the schematic representation of a most preferred embodiment of steering pump flow control valve of the present utility model.
Fig. 2 is the rotating speed-flow curve figure of steering pump flow control valve of the present utility model.
Embodiment
In the embodiment shown in fig. 1, servosteering pump flow control valve of the present utility model have valve body 6, delivery connection 1, be positioned at delivery connection 1 hyperbaric chamber A, be positioned at the low-pressure cavity B of valve body 6;
Be provided with flow-off 13 in the valve body, the one side also is provided with the fluid passage 7 that is used for hyperbaric chamber and low-pressure cavity UNICOM, and this passage 7 is through a damping hole 8 and hyperbaric chamber A UNICOM; Be provided with the guiding valve 9 that cooperates with its inner circumference motive sealing in the low-pressure cavity B, one slide valve spring 10 valve body axially on prop up this guiding valve 9, it can be moved axially under the force action of hyperbaric chamber and low-pressure cavity and slide valve spring 10, and be positioned on the suitable axial position by pressure balance; One valve rod 11 is positioned at hyperbaric chamber A one end of throttle valve piece and passes throttle orifice 12 on delivery connection 1 one ends, axially moves and the location under the force action of hyperbaric chamber A, low-pressure cavity B and slide valve spring 10 equally; In the present embodiment, valve rod 11 has three different diameter a, b, c, and a section diameter minimum of close low-pressure cavity increases then successively.
When oil pump is in the slow-speed of revolution, because F+P1C〉F is the elastic force of slide valve spring in the P2C(formula, P1 is the pressure of low-pressure cavity B, C is the gliding valve pressurized cross sectional area in two chambeies respectively, P2 is a hyperbaric chamber pressure), make the oil pump guiding valve be in the home position, guiding valve is not subjected to displacement.At this moment, flow Q=qn(q is the Theoretical flowing capacity of steering pump, unit: milliliter/commentaries on classics; N is an engine speed, unit: rev/min).It on flow curve the D-E section.Slope is an oil pump capacity.
Pump speed raises, and when F+P1A＜P2A, makes the oil pump guiding valve be moved to the left, thereby has the part high pressure oil to return oil sucting cavity by flow-off 13.At this moment, flow Q=qn-Q overflow.It on flow curve the E-F section.
When pump speed continue to raise, because F+P1A＜＜P2A, make the oil pump guiding valve continue to be moved to the left, the area of oil outlet is owing to become littler under the effect of tapering, thereby increases the Q overflow, and flow Q=qn-Q overflow is the F-G section on curve.
As can be seen from Figure 2, the output flow of steering pump flow control valve of the present utility model can raise with pump speed and reduce.
Only mentioned the requisite feature of explanation the utility model in the foregoing description,, can not all matters, big and small all parts all have been enumerated because length is limit.These parts of not mentioning all are common practise for a person skilled in the art, and dispensable for explanation the utility model.After having read above-mentioned explanation, those skilled in the art need not to pay creative work again and can realize the utility model in conjunction with its technology general knowledge.On the other hand, it will be appreciated by those skilled in the art that, category of the present utility model not only comprises the technological scheme of whole foregoing descriptions, and the multiple combination that comprises these technological schemes and constitute the feature of these technological schemes, as long as these combinations meet the qualification of claim of the present utility model.
Claims (4)
1. automobile power steering pump flow control valve, have valve body, delivery connection, be positioned at delivery connection hyperbaric chamber, be positioned at the low-pressure cavity of valve body; A side is provided with flow-off and the fluid passage that is used for hyperbaric chamber and low-pressure cavity UNICOM in the valve body, and this passage is through a damping hole and hyperbaric chamber UNICOM; Be provided with the gliding valve that cooperates with the inner circumference motive sealing of its valve body in the low-pressure cavity, one slide valve spring valve body axially on this gliding valve is supported to hyperbaric chamber, it can be moved axially under the force action of hyperbaric chamber and low-pressure cavity and slide valve spring, and be positioned on the suitable axial position; Described gliding valve has a low-pressure cavity part and a valve rod that is positioned at low-pressure cavity, and this valve rod is positioned at hyperbaric chamber one end and the throttle orifice that passes on delivery connection one end extend into hyperbaric chamber; It is characterized in that: the diameter of valve rod is not quite similar.
2. automobile power steering pump flow control valve as claimed in claim 1 is characterized in that: valve rod has three different diameter a, b, c, and a section diameter minimum of close low-pressure cavity increases then successively.
3. automobile power steering pump flow control valve, have valve body, delivery connection, be positioned at delivery connection hyperbaric chamber, be positioned at the low-pressure cavity of valve body; A side is provided with flow-off and the fluid passage that is used for hyperbaric chamber and low-pressure cavity UNICOM in the valve body, and this passage is through a damping hole and hyperbaric chamber UNICOM; Be provided with the gliding valve that cooperates with the inner circumference motive sealing of its valve body in the low-pressure cavity, one slide valve spring valve body axially on this gliding valve is supported to hyperbaric chamber, it can be moved axially under the force action of hyperbaric chamber and low-pressure cavity and slide valve spring, and be positioned on the suitable axial position; Described gliding valve comprises a low-pressure cavity part and a valve rod that is positioned at low-pressure cavity, and this valve rod is positioned at hyperbaric chamber one end and the throttle orifice that passes on delivery connection one end extend into hyperbaric chamber; It is characterized in that: the diameter of valve rod increases gradually from being round table-like near low-pressure cavity one end to hyperbaric chamber one end.
4. as the described automobile power steering pump flow control valve of above-mentioned arbitrary claim, it is characterized in that: do not comprise throttle seat, throttling valve core, throttling spring and joints sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206364899U CN201916176U (en) | 2010-12-01 | 2010-12-01 | Steering pump flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206364899U CN201916176U (en) | 2010-12-01 | 2010-12-01 | Steering pump flow control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201916176U true CN201916176U (en) | 2011-08-03 |
Family
ID=44415973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206364899U Expired - Fee Related CN201916176U (en) | 2010-12-01 | 2010-12-01 | Steering pump flow control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201916176U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032375A (en) * | 2010-12-01 | 2011-04-27 | 瑞立集团瑞安汽车零部件有限公司 | Flow control valve of steering pump |
| CN102352834A (en) * | 2011-10-13 | 2012-02-15 | 杭州力龙液压有限公司 | Constant-power control valve |
-
2010
- 2010-12-01 CN CN2010206364899U patent/CN201916176U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032375A (en) * | 2010-12-01 | 2011-04-27 | 瑞立集团瑞安汽车零部件有限公司 | Flow control valve of steering pump |
| CN102032375B (en) * | 2010-12-01 | 2014-07-09 | 瑞立集团瑞安汽车零部件有限公司 | Flow control valve of steering pump |
| CN102352834A (en) * | 2011-10-13 | 2012-02-15 | 杭州力龙液压有限公司 | Constant-power control valve |
| CN102352834B (en) * | 2011-10-13 | 2015-07-08 | 杭州力龙液压有限公司 | Constant-power control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20151201 |
|
| EXPY | Termination of patent right or utility model |