CN1273740C - Power steering oil pump for automobile - Google Patents
Power steering oil pump for automobile Download PDFInfo
- Publication number
- CN1273740C CN1273740C CN 02144872 CN02144872A CN1273740C CN 1273740 C CN1273740 C CN 1273740C CN 02144872 CN02144872 CN 02144872 CN 02144872 A CN02144872 A CN 02144872A CN 1273740 C CN1273740 C CN 1273740C
- Authority
- CN
- China
- Prior art keywords
- pump
- valve body
- oil
- pump housing
- pump cover
- 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 - Fee Related
Links
- 229920006351 engineering plastic Polymers 0.000 claims abstract description 6
- 239000000945 filler Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000001746 injection moulding Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 230000003749 cleanliness Effects 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012356 Product development Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000001458 anti-acid effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
Images
Landscapes
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
The present invention relates to a power steering oil pump for an automobile, which comprises a pump body, a valve body, a pump cover, a driving member and an inner cavity member of the pump body, wherein the inner cavity member of the pump body comprises an oil inlet pressure plate, an oil outlet pressure plate, a stator, a rotor, a blade and a spring; a sliding valve, a screw plug and a spring are arranged in the valve body; an oil inlet and an oil outlet are arranged at the upper end of the valve body; the driving member is connected with the rotor in the inner cavity member of the pump body in a driving way through a pump shaft; a frame oil seal is arranged between the pump body and the pump shaft; an O-shaped sealing ring is sheathed on the oil outlet pressure plate in the pump body inner cavity member. The present invention is characterized in that after adopting split injection molding by engineering plastics, the pump body, the pump cover and the valve body are all connected by bolts, and the pump cover and the valve body are connected in a plane way. An oil channel of the pump body is arranged on a joint surface between the pump cover and the valve body, the pump body and the pump cover are split at the point of a low pressure oil cavity, and the pump cover and the inner cavity member are formed into a high pressure cavity. The present invention has the advantages of light weight, low noise, corrosion resistance, simple technology, high manufacturing precision, high cleanliness, stable control of flow, leakage prevention and low cost.
Description
Technical field:
The invention belongs to the motor turning technical field, especially relate to a kind of steerig pump.
Background technique:
The automobile power steering oil pump is the dynamical element that provides hydraulic pressure can change and recover vehicle traveling direction to steering box in the automotive steering, and it is based on traditional vane pump technology, relief valve and flow control valve is combined dexterously form.This pump is except Sealing, and every other member all adopts the metalwork based on iron and steel, and weight is big; Motion is easy to generate noise; The surface is perishable; The processing technology complexity, repeatedly the location makes its geometrical precision low, and turbidity test are poor, and coarse oil channel hole right angle connects to be opened at pump housing inwall, causes the liquid resistance very big, and logical oil is not smooth, the flow control instability; Pump cover is installed on the high-voltage oil cavity place, and there is the oil impregnate phenomenon junction of the pump cover and the pump housing; In addition, production process use equipment is many, needs number many, and it is big to take plant area, thereby the manufacture cost height.
Summary of the invention:
Technical problem to be solved by this invention provide a kind of in light weight, noise floor, corrosion-resistant, technology is simple, accuracy of manufacturing is high, turbidity test are good, flow control is stable, leakage proof, automobile power steering oil pump that cost is low.
Technological scheme of the present invention is achieved in that it comprises the pump housing, valve body, pump cover, driving component, pump housing inner chamber spare, pump housing inner chamber spare comprises the input pressure plate, fuel-displaced pressure plate, stator, rotor, blade, spring, be provided with guiding valve in the valve body, plug screw, spring, the valve body upper end is provided with filler opening and oil outlet, driving component is in transmission connection by the rotor in pump shaft and the pump housing inner chamber spare, between the pump housing and the pump shaft outside framework oil seal is housed, be with the O RunddichtringO on the fuel-displaced pressure plate in the pump housing inner chamber spare, the pump housing, pump cover and valve body all adopt bolt to be connected after adopting engineering plastics split molding and forming, and pump cover adopts the plane to be connected with valve body, pump housing oil duct is located on the mating face of pump cover and valve body, the pump housing and pump cover are in low pressure oil pocket punishment type, and pump cover and inner chamber spare form hyperbaric chamber.
Good effect of the present invention is: owing to adopt engineering plastics, split molding and forming, so very light in weight, the weight of the pump housing only is equivalent to the sixth of existing pump body weight; Engineering plastic materials has good damping performance, can absorb because the noise of generations such as friction, vibration, liquid flow impact; The plastic pump surface is very corrosion-resistant, need not pass through any surface treatment, has good antiacid alkali, salt spray resistance, helps prolonging product working life; Plastic pump has good technology capability, and precision height, turbidity test are good; Again because the change of pump cover shape and with the low-pressure cavity that is in oil pump being connected of the pump housing, reduce the requirement of steerig pump greatly to sealing, guarantee that assembly can oil impregnate; Pump cover adopts the plane to be connected with valve body, can make the oil channel hole of flow control valve in the plane like this, so oil duct is unimpeded, flow control is stable; Valve body is made easily damaged parts, can change separately when breaking down, and reduces maintenance cost; Injection moulding processing, reduced operation, enhance productivity, saved manufacture cost, injection molding machine is simple in structure, easy to maintenance, compare with the machining of removing material, maintenance expenses significantly reduces, and the product dimensional uniformity of molding and forming is good, reject rate even be zero is so quality cost also reduces greatly.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of valve body;
Fig. 3 is a valve body lower surface configuration schematic representation;
Fig. 4 is a pump cover surface structure schematic representation.
Embodiment:
With reference to Fig. 1, the present invention includes the pump housing 5, valve body 13, pump cover 2, driving gear 8, pump housing inner chamber spare, pump housing inner chamber spare comprises input pressure plate 9, fuel-displaced pressure plate 14, stator 4, rotor 18, blade 19, spring 16, input pressure plate 9 and fuel-displaced pressure plate 14 are located by pin 10, and compress with spring 16, driving gear 8 is in transmission connection by the rotor 18 in pump shaft 17 and the pump housing inner chamber spare, driving gear 8 is connected by key 7 with pump shaft 17, between the pump housing 5 and the pump shaft 17 outside framework oil seal 6 is housed, be with O RunddichtringO 3 on the fuel-displaced pressure plate 14 in the pump housing inner chamber spare, the pump housing 5, after adopting engineering plastics split molding and forming, pump cover 2 and valve body 13 all adopt bolt 1,12 connect, and pump cover 2 adopts the plane to be connected with valve body 13, the pump housing 5 and pump cover 2 are in low pressure oil pocket 11 punishment types, greatly reduce the requirement of steerig pump to sealing, guarantee that assembly can oil impregnate, pump cover 2 and inner chamber spare formation high-voltage oil cavity 15.
According to needs are installed, also available spline of driving gear 8 or cross key replace.
With reference to Fig. 2, be provided with guiding valve 22, plug screw 25, spring 20 in the valve body, the valve body upper end is provided with filler opening 23 and oil outlet 21, has oil outlet 24, return opening 26 and oil channel hole 27 on the valve body.
With reference to Fig. 3 and Fig. 4, pump cover adopts the plane to be connected with valve body, pump housing oil duct is located on the mating face of pump cover and valve body, have damping hole 28, oil channel hole 29 on the valve body, pump cover has corresponding oil outlet 24, return opening 26, filler opening 30 with valve body, this design of oil duct has reduced the oil channel hole surface roughness, the surface friction drag when having alleviated flow of fluid on the one hand; On the other hand, the circular arc passage is made in the corner of oil channel hole, and the mechanical resistance when having alleviated flow of fluid can be guaranteed the sensitivity of pressure signal transmission like this, improves the control accuracy of flow control valve.
During work, fluid enters pump low-pressure cavity 11 from the filler opening 23 of valve body through the filler opening 30 of valve body and pump cover, enter high-voltage oil cavity 15 through pump housing inner chamber spare, the damping hole 28 of the high pressure oil part of the oil outlet 24 of process pump cover and valve body on valve body arrives oil outlets 21, another part removes to push guiding valve and flows back to oil hydraulic pump low-pressure cavity 11 from the return opening 26 of valve body, simultaneously, oil outlet 21 communicates with the left oil pocket of valve body by oil channel hole 29 and 27, guiding valve is at spring force, be in the transient equiliblium position under the effect of the power of surging and hydraulic coupling, make steering pump per minute output flow stable.
Be convenient processing and manufacture, the connecting thread into and out of the stifled place of oil of valve body adopts the mode of making the threaded pipe inserter, and the inserter of making in advance is placed in the mould, makes it after the injection moulding to become one.Equally, because the valve opening required precision of steering pump is very high, so, adopt the metal valve cover as inserter.After decomposing like this, the processing of each part just becomes and is easy to, and working efficiency is also very high.
Adopt automobile power steering oil pump of the present invention, can increase substantially manufacturing efficiency, can realize rapidly that production quantity reaches the requirement of sale fully from 200,000 to 400,000 transformation.If transform on existing basis, the throughput that reach 400,000 is wanted 1,000 ten thousand yuan investment at least, adopts plastic pump only to need about 1,000,000 yuan investment.Product cost is low, and still has the very big cost space of falling, and improves the competitive capacity of steering pump product greatly.Choose, compare with factory building, now choose 55,32 of equipment, plastic pump only need 7 of equipment, personnel selection 14.And the steering pump product development cycle of plastics technology is short, is easy to update.The plastic pump production is prepared easily simple, and the model change expense is low, the time short.
Claims (1)
1, a kind of automobile power steering oil pump, it comprises the pump housing (5), valve body (13), pump cover (2), driving component, pump housing inner chamber spare, pump housing inner chamber spare comprises input pressure plate (9), fuel-displaced pressure plate (14), stator (4), rotor (18), blade (19), spring (16), be provided with guiding valve (22) in the valve body (13), plug screw (25), spring (20), the valve body upper end is provided with filler opening (23) and oil outlet (21), driving component is in transmission connection by the rotor (18) in pump shaft (17) and the pump housing inner chamber spare, between the pump housing (5) and the pump shaft (17) outside framework oil seal (6) is housed, be with 0 RunddichtringO (3) on the fuel-displaced pressure plate (14) in the pump housing inner chamber spare, it is characterized in that: the pump housing (5), pump cover (2) and valve body (13) all adopt bolt (1 after adopting engineering plastics split molding and forming, 12) connect, and pump cover (2) adopts the plane to be connected with valve body (13), pump housing oil duct is located on the mating face of pump cover (2) and valve body (3), the pump housing (5) and pump cover (2) are in low pressure oil pocket (11) punishment type, and pump cover (2) forms high-voltage oil cavity (15) with pump housing inner chamber spare.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02144872 CN1273740C (en) | 2002-11-19 | 2002-11-19 | Power steering oil pump for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02144872 CN1273740C (en) | 2002-11-19 | 2002-11-19 | Power steering oil pump for automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1500992A CN1500992A (en) | 2004-06-02 |
| CN1273740C true CN1273740C (en) | 2006-09-06 |
Family
ID=34232146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02144872 Expired - Fee Related CN1273740C (en) | 2002-11-19 | 2002-11-19 | Power steering oil pump for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1273740C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010017795A2 (en) * | 2008-08-12 | 2010-02-18 | Ixetic Bad Homburg Gmbh | Pump unit |
| DE102015105933B4 (en) * | 2015-04-17 | 2018-04-26 | Schwäbische Hüttenwerke Automotive GmbH | pump |
-
2002
- 2002-11-19 CN CN 02144872 patent/CN1273740C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1500992A (en) | 2004-06-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FAW KOYO STEERING SET CO.,LTD Free format text: FORMER OWNER: SHI XUEZHONG Effective date: 20091120 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091120 Address after: No. 245, Shenzhen street, Changchun economic and Technological Development Zone, Jilin, China Patentee after: FAW Koyo steering Ltd. Address before: Shenzhen street in Jilin province Changchun City Economic and Technological Development Zone No. 5 FAW Fawer company Patentee before: Shi Xuezhong |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060906 Termination date: 20181119 |