CN104276208B - Inner oil duct control valve of automobile power steering gear - Google Patents
Inner oil duct control valve of automobile power steering gear Download PDFInfo
- Publication number
- CN104276208B CN104276208B CN201410467286.4A CN201410467286A CN104276208B CN 104276208 B CN104276208 B CN 104276208B CN 201410467286 A CN201410467286 A CN 201410467286A CN 104276208 B CN104276208 B CN 104276208B
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- China
- Prior art keywords
- hollow axle
- torsion bar
- input shaft
- control valve
- screw rod
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/08—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of steering valve used
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
The invention discloses an inner oil duct control valve of an automobile power steering gear. The inner oil duct control valve comprises a screw hollow shaft (1), an input shaft (2) and a valve body, wherein one end of the screw hollow shaft (1) is provided with a hollow shaft fixed end (3); a torsion bar (4) is arranged in the screw hollow shaft (1); one end of the torsion bar (4) is connected with one end of the input shaft (2) through a driving pin (10); a gap passage (5) is arranged between the inner wall of the screw hollow shaft (1) and the outer surface of the torsion bar (4); the outer wall at the end, close to the input shaft (2), of the screw hollow shaft (1) is provided with an upper cavity oil hole (8), and the outer wall at the other end of the screw hollow shaft (1) is provided with a lower cavity oil hole (9). The inner oil duct control valve has a compact structure; by arranging an inner oil duct, the complex structure of a conventional steering control valve is simplified, the oil inlet and return are smooth and quick, a steering gap of the steering valve is greatly reduced, the steering sensitivity is improved, and the steering operation performance of a vehicle is favorably improved.
Description
Technical field
The present invention relates to a kind of steering gear control valve, more particularly, to a kind of automobile power steering internal oil channel control valve, belong to
In technical field of automobile.
Background technology
At present, automobile hydraulic power-driven steering gear control valve is commonly employed in motor turning assembly, traditional steering
Device structure is powder metallurgy valve arrangement and three-member type steel valve arrangement, and the control valve clearance of both steering gears is bigger than normal, turns to not
Sensitive, steering gap easily occurs, particularly for heavy goods vehicles, due to needing higher pressure and bigger flow, occurs
Steering gap bigger, be unfavorable for the steering manipulation of vehicle.
As Chinese utility model patent notification number: cn 202345757u, publication date: the utility model on July 25th, 2012
Patent discloses a kind of recirculating ball power steering gear steering control valve, and it is by steering screw, damping ring, input shaft and torsion bar structure
Become, input shaft is arranged in the endoporus of steering screw by needle bearing a and needle bearing b, sets in the through hole at input shaft center
It is equipped with torsion bar, one end of torsion bar is connected with steering screw by straight pin a, the other end of torsion bar passes through straight pin b and input shaft
Connect.But this device volume is larger, controls valve clearance bigger than normal, turn to not sensitive, be unfavorable for the steering manipulation of vehicle.
Content of the invention
The purpose of the present invention is bigger than normal for the control valve clearance of existing automobile steering device, turns to not sensitive, easily goes out
Turn now to gap, the not good defect of steering manipulation performance and deficiency, a kind of compact conformation is provided, control valve clearance less, turn to
Sensitivity is high, is not in steering gap, a kind of good automobile power steering internal oil channel control valve of steering manipulation performance.
For achieving the above object, the technical solution of the present invention is: a kind of automobile power steering internal oil channel control valve,
Including screw rod hollow axle, input shaft and valve body, one end of described screw rod hollow axle is provided with hollow axle fixing end, and hollow axle is solid
Fixed end is arranged on valve body, and the internal engagement of hollow axle fixing end is provided with input shaft, and the inside of screw rod hollow axle is provided with torsion
Bar, one end of torsion bar is connected with one end of input shaft by drive pin, the inwall of screw rod hollow axle and the outer surface of torsion bar it
Between be provided with interstitial channels, screw rod hollow axle offers epicoele oilhole on the outer wall of input shaft one end, and screw rod hollow axle is another
Cavity of resorption oilhole is offered on the outer wall of one end, epicoele oilhole is connected with the epicoele of steering gear piston oil-cylinder in valve body, cavity of resorption oil
Hole is connected with the cavity of resorption of steering gear piston oil-cylinder in valve body, and hollow axle fixing end offers spill port on the side wall of outer end,
The other end of hollow axle fixing end offers fuel feed hole, the excircle of described input shaft offers and equidistantly alternately divides vertically
The short keyway of cloth and long keyway, offer 1-3 short keyway between two often adjacent long keyway.
The length ratio of described short keyway and long keyway is 1/3-2/3, and short keyway and long keyway are in input shaft radially
Depth capacity is 1 millimeter -5 millimeters.
The diameter with diameter greater than stage casing at described torsion bar two ends, the junction between the both ends of torsion bar and stage casing is circular arc
Transition connects.
The outer surface at described torsion bar two ends is 5 millimeters -15 millimeters with the spacing of screw rod hollow axle intracavity sidewall.
Described drive pin be connected perpendicular to the axial line of torsion bar and with input shaft.
The invention has the beneficial effects as follows:
1. the present invention is provided with torsion bar in the inside of screw rod hollow axle, arranges between screw rod hollow axle and the outer surface of torsion bar
Have interstitial channels, screw rod hollow axle offer epicoele oilhole and cavity of resorption oilhole, hollow axle fixing end offers fuel feed hole and
Spill port, the excircle of input shaft offers short keyway and long keyway.
2. present configuration is compact, by the setting of internal oil channel, simplifies the complicated structure of conventional steering control valve, oil-feed
Oil return is smooth quick, significantly reduces the steering gap of switching valve, steering sensitivity is improved, and is conducive to improving vehicle
Steering manipulation performance, is particularly suitable for heavy goods vehicles steering control valve is carried out with the hydraulic-driven of high pressure, big oil mass.
Brief description
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the sectional view of Fig. 1.
Fig. 3 is the structural representation of the short keyway of the present invention and long keyway.
In figure: screw rod hollow axle 1, input shaft 2, hollow axle fixing end 3, torsion bar 4, interstitial channels 5, fuel feed hole 6, spill port
7, epicoele oilhole 8, cavity of resorption oilhole 9, drive pin 10, short keyway 11, long keyway 12.
Specific embodiment
Below in conjunction with brief description and specific embodiment, the present invention is described in further detail.
Referring to Fig. 1 to Fig. 3, a kind of automobile power steering internal oil channel control valve of the present invention, including screw rod hollow axle 1,
Input shaft 2 and valve body, one end of described screw rod hollow axle 1 is provided with hollow axle fixing end 3, and hollow axle fixing end 3 is arranged on
On valve body, the internal engagement of hollow axle fixing end 3 is provided with input shaft 2, and the inside of screw rod hollow axle 1 is provided with torsion bar 4, torsion bar
4 one end is connected with one end of input shaft 2 by drive pin 10, between the outer surface of the inwall of screw rod hollow axle 1 and torsion bar 4
It is provided with interstitial channels 5, screw rod hollow axle 1 offers epicoele oilhole 8, screw rod hollow axle 1 on the outer wall of input shaft 2 one end
Cavity of resorption oilhole 9 is offered on the outer wall of the other end, epicoele oilhole 8 is connected with the epicoele of steering gear piston oil-cylinder in valve body, under
Chamber oilhole 9 is connected with the cavity of resorption of steering gear piston oil-cylinder in valve body, and hollow axle fixing end 3 offers back on the side wall of outer end
Oilhole 7, the other end of hollow axle fixing end 3 offers fuel feed hole 6, the excircle of described input shaft 2 offers vertically etc.
The alternatively distributed short keyway 11 of spacing and long keyway 12, offer 1-3 short keyway 11 between two often adjacent long keyway 12.
Described short keyway 11 is 1/3-2/3 with the length ratio of long keyway 12, and short keyway 11 and long keyway 12 are in input shaft 2
Depth capacity radially is 1 millimeter -5 millimeters.
The diameter with diameter greater than stage casing at described torsion bar 4 two ends, the junction between the both ends of torsion bar 4 and stage casing is circle
Arc transition connects.
The outer surface at described torsion bar 4 two ends is 5 millimeters -15 millimeters with the spacing of screw rod hollow axle 1 intracavity sidewall.
Described drive pin 10 be connected perpendicular to the axial line of torsion bar 4 and with input shaft 2.
Screw rod hollow axle 1 is the hollow tubular structures of both ends open, and the outer round surface of screw rod hollow axle 1 is provided with spiral shell
Stricture of vagina.The one or both ends of screw rod hollow axle 1 are provided with hollow axle fixing end 3, and hollow axle fixing end 3 is annular boss or bearing is solid
Positioning, screw rod hollow axle 1 is arranged on valve body by annular boss or bearing fixed bit.If fixed using bearing fixed bit,
Then need to be respectively provided with bearing fixed bit at the two ends of screw rod hollow axle 1, one end of screw rod hollow axle 1 is fixed on valve body.Spiral shell
Input shaft 2 is installed inside one end of bar hollow axle 1, the outer end of input shaft 2 reaches the outside of screw rod hollow axle 1, input shaft 2
Outer end be connected with the rotary shaft on motor turning steering wheel.
The inside of screw rod hollow axle 1 is provided with torsion bar 4, and the medial extremity of drive pin 10 and input shaft 2 is passed through in one end of torsion bar 4
It is connected, and drive pin 10 is perpendicular to the axial line of torsion bar 4.The diameter with diameter greater than stage casing at torsion bar 4 two ends, torsion bar 4
Junction between both ends and stage casing is connected for arc transition.Set between the outer surface of the inwall of screw rod hollow axle 1 and torsion bar 4
It is equipped with interstitial channels 5, the outer surface at torsion bar 4 two ends is 5 millimeters -15 millimeters with the spacing of screw rod hollow axle 1 intracavity sidewall, space
Passage 5 can facilitate hydraulic oil to pass through.
Equidistantly alternatively distributed short keyway 11 and long keyway 12 vertically, every phase are offered on the excircle of input shaft 2
1-3 short keyway 11 is offered, short keyway 11 is 1/3-2/ with the length ratio of long keyway 12 between two adjacent long keyway 12
3, depth capacity radially is 1 millimeter -5 millimeters in input shaft 2 for short keyway 11 and long keyway 12, short keyway 11 and long keyway 12
The depth of rebate at two ends is less than the depth of median slot.Operationally, all of short keyway 11 or all of long keyway on circumference
12 can allow hydraulic oil circulate it is ensured that input shaft 2 and torsion bar 4 smoothly rotate in time simultaneously.Hydraulic oil can pass through short
Keyway 11 enters in epicoele oilhole 8, and hydraulic oil can enter into spill port 7 by long keyway 12.
Screw rod hollow axle 1 offers epicoele oilhole 8 on the outer wall of input shaft 2 one end, screw rod hollow axle 1 other end
Cavity of resorption oilhole 9 is offered on outer wall, epicoele oilhole 8 is connected with the epicoele of steering gear piston oil-cylinder in valve body, cavity of resorption oilhole 9 with
In valve body, the cavity of resorption of steering gear piston oil-cylinder is connected, and hollow axle fixing end 3 offers spill port 7 on the side wall of outer end, empty
The other end of heart axle fixing end 3 offers fuel feed hole 6, and fuel feed hole 6 is connected with oil pump with spill port 7.
The operation principle of the present invention and process are as follows: when steering wheel turns right, steering hydraulic oil passes through from fuel feed hole 6
Short keyway 11 on input shaft 2 enters into epicoele oilhole 8, and then enters into the upper intracavity of steering gear piston oil-cylinder in valve body.Live
The hydraulic oil of plug oil cylinder cavity of resorption is then entered in interstitial channels 5 by cavity of resorption oilhole, flows through interstitial channels 5 and enters into long keyway 12
Interior, return oil pump after entering back into spill port 7.So hydraulic oil just promotes steering gear piston to move downward, thus by turning to
System miscellaneous part promotes wheel to turn right, and realizes right turn motion.
When steering wheel turns left, from fuel feed hole 6, the long keyway 12 through input shaft 2 enters into sky to steering hydraulic oil
The lower intracavity of steering gear piston oil-cylinder, intracavity on steering gear piston oil-cylinder in gap passage 5, is then entered into by cavity of resorption oilhole 9
Hydraulic oil entered in short keyway 11 by epicoele oilhole 8, and then enter into and return oil pump after spill port 7.So hydraulic oil
Just promoting piston upwards, thus promoting wheel to turn left by steering miscellaneous part, realizing left steering motion.
Claims (5)
1. a kind of automobile power steering internal oil channel control valve, including screw rod hollow axle (1), input shaft (2) and valve body, it is special
Levy and be: one end of described screw rod hollow axle (1) is provided with hollow axle fixing end (3), hollow axle fixing end (3) is arranged on valve body
On, the internal engagement of hollow axle fixing end (3) is provided with input shaft (2), and the inside of screw rod hollow axle (1) is provided with torsion bar (4),
One end of torsion bar (4) is connected with one end of input shaft (2) by drive pin (10), the inwall of screw rod hollow axle (1) and torsion bar
(4) it is provided with interstitial channels (5) between outer surface, screw rod hollow axle (1) offers on the outer wall of input shaft (2) one end
Epicoele oilhole (8), the outer wall of screw rod hollow axle (1) other end offers cavity of resorption oilhole (9), in epicoele oilhole (8) and valve body
The epicoele of steering gear piston oil-cylinder is connected, and cavity of resorption oilhole (9) is connected with the cavity of resorption of steering gear piston oil-cylinder in valve body, hollow axle
Fixing end (3) offers spill port (7) on the side wall of outer end, and the other end of hollow axle fixing end (3) offers fuel feed hole
(6), the excircle of described input shaft (2) offers vertically equidistantly alternatively distributed short keyway (11) and long keyway
(12) offer 1-3 short keyway (11) between two, often adjacent long keyway (12).
2. a kind of automobile power steering internal oil channel control valve according to claim 1 it is characterised in that: described short keyway
(11) it is 1/3-2/3 with the length ratio of long keyway (12), short keyway (11) and long keyway (12) are in input shaft (2) radially
Depth capacity is 1 millimeter -5 millimeters.
3. a kind of automobile power steering internal oil channel control valve according to claim 1 it is characterised in that: described torsion bar
(4) diameter with diameter greater than stage casing at two ends, the junction between the both ends of torsion bar (4) and stage casing is connected for arc transition.
4. a kind of automobile power steering internal oil channel control valve according to claim 1 it is characterised in that: described torsion bar
(4) outer surface at two ends and the spacing of screw rod hollow axle (1) intracavity sidewall are 5 millimeters -15 millimeters.
5. a kind of automobile power steering internal oil channel control valve according to claim 1 it is characterised in that: described drive pin
(10) be connected perpendicular to the axial line of torsion bar (4) and with input shaft (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410467286.4A CN104276208B (en) | 2014-09-15 | 2014-09-15 | Inner oil duct control valve of automobile power steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410467286.4A CN104276208B (en) | 2014-09-15 | 2014-09-15 | Inner oil duct control valve of automobile power steering gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104276208A CN104276208A (en) | 2015-01-14 |
| CN104276208B true CN104276208B (en) | 2017-01-18 |
Family
ID=52251674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410467286.4A Active CN104276208B (en) | 2014-09-15 | 2014-09-15 | Inner oil duct control valve of automobile power steering gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104276208B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6035957A (en) * | 1997-09-22 | 2000-03-14 | Trw Inc. | Power steering control valve balancing |
| KR100622120B1 (en) * | 2004-12-07 | 2006-09-19 | 현대모비스 주식회사 | Power steering gear for a motor vehicle |
| CN200964129Y (en) * | 2006-10-26 | 2007-10-24 | 江门市兴江转向器有限公司 | Electric control hydraulic pressure power steering device assembly |
| CN203318495U (en) * | 2013-05-30 | 2013-12-04 | 安徽精灵转向器有限公司 | Hydraulic power assisted integral automobile power steering gear |
| CN203819328U (en) * | 2014-03-14 | 2014-09-10 | 杭州世宝汽车方向机有限公司 | Steering control valve used for heavy circulating ball steering gear |
| CN204095876U (en) * | 2014-09-15 | 2015-01-14 | 三环集团公司 | A kind of automobile power steering internal oil channel control cock |
-
2014
- 2014-09-15 CN CN201410467286.4A patent/CN104276208B/en active Active
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| Publication number | Publication date |
|---|---|
| CN104276208A (en) | 2015-01-14 |
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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 | ||
| CB02 | Change of applicant information |
Address after: 430074, No. 33, Jiayuan Road, East Lake hi tech Development Zone, Wuhan, Hubei, Wuhan Applicant after: TRI-RING GROUP CORPORATION Applicant after: HUBEI TRI-RING MOTOR STEERING GEAR CO., LTD. Address before: 430074, No. 33, Jiayuan Road, East Lake hi tech Development Zone, Wuhan, Hubei, Wuhan Applicant before: TRI-RING GROUP CORPORATION Applicant before: HUBEI TRI-RING MOTOR STEERING GEAR CO., LTD. |
|
| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |