CN203477132U - Clutch pressure control valve of continuously variable transmission - Google Patents
Clutch pressure control valve of continuously variable transmission Download PDFInfo
- Publication number
- CN203477132U CN203477132U CN201320587667.7U CN201320587667U CN203477132U CN 203477132 U CN203477132 U CN 203477132U CN 201320587667 U CN201320587667 U CN 201320587667U CN 203477132 U CN203477132 U CN 203477132U
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- Prior art keywords
- spool
- valve element
- pressure control
- control valve
- clutch pressure
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- 230000005540 biological transmission Effects 0.000 title abstract description 8
- 238000009826 distribution Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 230000000903 blocking effect Effects 0.000 abstract 5
- 239000003921 oil Substances 0.000 description 41
- 238000009434 installation Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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- Control Of Transmission Device (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The utility model provides a clutch pressure control valve of a continuously variable transmission, and relates to the field of manufacturing of automobiles. The clutch pressure control valve of the continuously variable transmission aims to solve the problems that the manufacturing difficulty of a valve element is large, and the smoothness effect of switching of pressure and flow of clutches is poor. The clutch pressure control valve of the continuously variable transmission comprises a valve element and a valve seat, wherein an oil channel is arranged at one end of the valve element; a valve element inner hole is formed in the other end of the valve element; steps are arranged on the outer sides of the two ends of the valve element; the valve seat comprises a blocking block; an inner valve element and a cylindrical wall are installed on one side of the blocking block; the blocking block and the cylindrical wall form a valve element hole; a side baffle is fixedly arranged on the other side of the blocking block; the inner valve element is inserted into the valve element inner hole; the valve element is installed in the valve element hole; the valve element is sleeved with a spring; the spring is clamped between the blocking block and the step closing to the valve element inner hole; the valve element and the valve element hole are the same in diameter; circular arc throttling orifices are formed in the step positions of the valve element. The clutch pressure control valve of the continuously variable transmission is used for improving the production rate and the working performance.
Description
Technical field
The utility model relates to automobile manufacturing field, refers to especially a kind of stepless speed variator clutch pressure control valve.
Background technique
In recent years, along with the raising that people require automobile comfort level and environmental protection and energy saving, vehicular automatic transmission theory and design manufacturing technology constantly perfect, the application area of stepless speed variator is more and more extensive.Variable Speed Technology, its adopts driving belt and the variable driven wheel of the working diameter incompatible transferring power that matches, and can realize continuously changing of velocity ratio, thus the optimum Match of the power train of obtaining and engine operating condition.
A kind of transmission device that stepless speed variator is comprised of variable transmission mechanism, speed regulating mechanism and pressurization device or output mechanism three parts, it can significantly improve the Economy of automobile, improve the power character of automobile, make motor car engine operate in all the time optimum target Operational Zone, to meet the requirement of machine or production system various different operating modes in operation process, so just both can reduce the gearshift of automobile and impact, also can alleviate driver's labor intensity.
Stepless speed variator is provided with clutch, comprises forward gear clutch and reverse clutch, and Clutch input shaft is connected with Output Shaft of Hydraulic Torque Converter, and clutch output shaft is connected with stepless speed variator driving pulley.Engine torque, via fluid torque converter, passes to clutch.Clutch is mainly comprised of friction plate and piston cylinder.Stepless speed variator is provided with oil pump, by engine-driving, for hydraulic system provides pressure oil.First the oil that oil pump is discharged regulate through working connection pressure controlled valve, and excessive oil regulates via auxiliary pressure control valve, inputs to respectively fluid torque converter and clutch pressure control valve.Clutch pressure control valve can carry out regulation output pressure size according to the pressure of solenoid valve, by manually operated valve oil circuit, enters forward gear/reverse clutch piston cylinder or off-load.When not having pressure oil to enter clutch plunger cylinder, friction plate can be in conjunction with, and Engine torque is in clutch place interrupt delivery, and vehicle is in neutral position state.When pressure oil enters clutch plunger cylinder, promote piston, pressing friction sheet, Engine torque can transmit, and different according to manually operated valve oil circuit, vehicle is in forward gears or reverse gear state.
Clutch pressure control valve should meet that to enter clutch pressure adjustable, meets clutch torque capacity and smooth gear shifting requirement; Clutch pressure control valve should guarantee that flow meets forward gear clutch or the quick combination of the clutch that reverses gear and off-load requirement; Clutch pressure control valve answers overall structure simple, manufacture, easy for installation.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of stepless speed variator clutch pressure control valve, large to solve spool manufacture difficulty, clutch pressure and flow switch smoothness weak effect.
For solving the problems of the technologies described above, embodiment of the present utility model provides a kind of stepless speed variator clutch pressure control valve, comprise spool and valve seat, described spool one end is provided with oil duct, the described spool the other end is provided with spool endoporus, outside, described spool two ends is equipped with step, described valve seat comprises sprue, described sprue one side is installed an inner spool and cylindrical wall, described sprue and described cylindrical wall form spool bore, described sprue opposite side is fixed with lateral retaining plate, described inner spool is plugged in described spool endoporus, described spool is arranged in described spool bore, described spool outside is arranged with spring, described spring clip is located at described near between the step and described sprue of spool endoporus, described spool is identical with described spool bore diameter, described spool step place is provided with circular arc restriction.
Wherein, the step place of close spool bore openings end is provided with a pad, and described pad and described spring are suitable.
Wherein, the diameter of described inner spool is identical with the diameter of described spool endoporus.
Wherein, on two end faces away from the step of spool bore openings end, be respectively equipped with two circular arc restrictions, described circular arc restriction is 180 degree circle distribution.
Wherein, described spool is provided with four oil ducts and is communicated with four corresponding oil circuits, and four oil circuits are followed successively by pilot pressure oil circuit, draining oil circuit, output circuit and auxiliary oil way inwards by spool termination.
Wherein, described sprue is equipped with endoporus and communicates with described lateral retaining plate.
The beneficial effect of technique scheme of the present utility model is as follows:
In such scheme, by adopting inner spool formula to design, making spool and spool bore is single diameter, has shortened valve core length, weight saving, and processing and installation are simple, reduce costs; On clutch pressure control valve spool, set up circular arc restriction, the sudden change while having avoided pressure and Flow-rate adjustment, has improved Clutch Control smoothness effect.
Accompanying drawing explanation
Fig. 1 is the sectional view of the utility model embodiment pressure controlled valve.
［ primary component symbol description ］
1: draining oil circuit;
2: circular arc restriction;
3: spool;
4: inner spool;
5: spring;
6: sprue;
7: lateral retaining plate;
8: auxiliary oil way;
9: output circuit;
10: pilot pressure oil circuit;
11: spool endoporus;
12: pad.
Embodiment
For making the technical problems to be solved in the utility model, technological scheme and advantage clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
As shown in Figure 1, the utility model embodiment is large for existing spool manufacture difficulty, and the problem of clutch pressure and flow switch smoothness weak effect, provides a kind of stepless speed variator clutch pressure control valve.
A kind of stepless speed variator clutch pressure control valve, comprise spool 3 and valve seat, described spool 3 one end are provided with oil duct, described spool 3 the other ends are provided with spool endoporus 11, described spool 3 outsides, two ends are equipped with step, described valve seat comprises sprue 6, described sprue 6 one sides are installed inner spool 4 and a cylindrical wall, described sprue 6 forms spool bore with described cylindrical wall, described sprue 6 opposite sides are fixed with lateral retaining plate 7, described inner spool 4 is plugged in described spool endoporus 11, described spool 3 is arranged in described spool bore, described spool 3 outsides are arranged with spring 5, described spring 5 is fastened on described near between the step and described sprue 6 of spool endoporus 11, described spool 3 is identical with described spool bore diameter, described spool 3 step places are provided with circular arc restriction.
Further, as shown in Figure 1, described spool 3 one end are provided with four oil ducts and are communicated with corresponding four oil circuits, and described four oil circuits are from a left side to by being followed successively by pilot pressure oil circuit 10, draining oil circuit 1, output circuit 9 and auxiliary oil way 8, for the pressure in regulating spool 3.
Wherein, described spool 3 right-hand members are arranged in spool bore, described spool bore consists of the sprue 6 that cylindrical wall is installed, described spool 3 can move left and right vertically in described spool bore, described spool bore is identical with described spool 3 diameters, has shortened the length of spool 3, weight reduction, processing and installation are simple, and cost is lower.
Further, described spool 3 right-hand members are provided with spool endoporus 11, described spool 3 outsides, two ends are equipped with step, on two end faces of described spool 3 left end steps, be respectively equipped with two circular arc restrictions 2, described circular arc restriction 2 is 180 degree circle distribution, suddenly change when structurally avoiding pressure and Flow-rate adjustment, improved Clutch Control smoothness effect.
Wherein, in described spool endoporus 11, plug an inner spool 4, the right-hand member of described inner spool 4 is fixedly mounted on sprue 6, and described sprue 6 is fixed on lateral retaining plate 7, described sprue 6 is equipped with endoporus and communicates with described lateral retaining plate 7, in order to avoid producing additional pressure at spool 3 and inner spool 4 right sides.
Further, described spool 3 outsides are arranged with a spring 5, and described spring 5 is located between spool 3 right-hand member steps and sprue 6, and described spool 3 right-hand member step places are provided with a pad 12, the pre-pressing force being used for after Regulation spring 5 installations, sprue 6 is used to spring 5 provide support and lead.
Wherein, pressure controlled valve workflow is as follows, and when electromagnetic valve for adjusting delivery pressure, pressure oil by pilot pressure oil circuit 10, acts on spool 3 left sides, and overcomes spring force and promote spool 3 and move axially to the right.When spool 3 moves to auxiliary oil way 8 and is connected position with output circuit 9, auxiliary oil way oil pressure is connected with clutch output circuit 9 by auxiliary oil way 8, oil duct 8 hydraulic oil act on inner spool 4 left sides by spool endoporus 11 simultaneously, and produce spool 3 feedback force left.When spool 3 reaches state of equilibrium, solenoid valve delivery pressure to the right and spring force left, feedback force left balances each other.Under solenoid valve delivery pressure permanence condition, when auxiliary oil way 8 pressure increase, the feedback force that spool 3 is subject to left increases, spool 3 is moved to the left, after moving certain distance, groove on spool 3 can be connected auxiliary oil way 8 with draining oil circuit 1, by draining oil circuit 1, leak, the feedback force left that spool 3 is subject to reduces, spool 3 moves right, being connected of auxiliary oil way 8 and draining oil circuit 1 will be closed again, auxiliary oil way 8 is connected with output circuit 9, clutch pressure control valve is always in this transient equiliblium, reach the object of stablizing clutch valve output oil pressure, therefore can carry out solenoidoperated cluthes pressure controlled valve delivery pressure by controlling solenoid valve pressure.
In such scheme, by adopting inner spool formula to design, making spool and spool bore is single diameter, has shortened valve core length, weight saving, and processing and installation are simple, reduce costs; On clutch pressure control valve spool, set up circular arc restriction, the sudden change while having avoided pressure and Flow-rate adjustment, has improved Clutch Control smoothness effect.
The above is preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. a stepless speed variator clutch pressure control valve, comprise spool and valve seat, described spool one end is provided with oil duct, the described spool the other end is provided with spool endoporus, outside, described spool two ends is equipped with step, described valve seat comprises sprue, described sprue one side is installed an inner spool and cylindrical wall, described sprue and described cylindrical wall form spool bore, described sprue opposite side is fixed with lateral retaining plate, described inner spool is plugged in described spool endoporus, described spool is arranged in described spool bore, described spool outside is arranged with spring, described spring clip is located at described near between the step and described sprue of spool endoporus, it is characterized in that, described spool is identical with described spool bore diameter, described spool step place is provided with circular arc restriction.
2. stepless speed variator clutch pressure control valve according to claim 1, is characterized in that, the step place of close spool bore openings end is provided with a pad, and described pad and described spring are suitable.
3. stepless speed variator clutch pressure control valve according to claim 1, is characterized in that, the diameter of described inner spool is identical with the diameter of described spool endoporus.
4. stepless speed variator clutch pressure control valve according to claim 1, is characterized in that, on two end faces away from the step of spool bore openings end, is respectively equipped with two circular arc restrictions, and described circular arc restriction is 180 degree circle distribution.
5. stepless speed variator clutch pressure control valve according to claim 1, it is characterized in that, described spool is provided with four oil ducts and is communicated with four corresponding oil circuits, and four oil circuits are followed successively by pilot pressure oil circuit, draining oil circuit, output circuit and auxiliary oil way inwards by spool termination.
6. stepless speed variator clutch pressure control valve according to claim 1, is characterized in that, described sprue is equipped with endoporus and communicates with described lateral retaining plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320587667.7U CN203477132U (en) | 2013-09-23 | 2013-09-23 | Clutch pressure control valve of continuously variable transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320587667.7U CN203477132U (en) | 2013-09-23 | 2013-09-23 | Clutch pressure control valve of continuously variable transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203477132U true CN203477132U (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320587667.7U Expired - Fee Related CN203477132U (en) | 2013-09-23 | 2013-09-23 | Clutch pressure control valve of continuously variable transmission |
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| Country | Link |
|---|---|
| CN (1) | CN203477132U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650050A (en) * | 2016-04-11 | 2016-06-08 | 青岛力克川液压机械有限公司 | Overload automatic resetting valve of hydraulic motor |
| CN110869634A (en) * | 2017-06-30 | 2020-03-06 | 本田技研工业株式会社 | Vehicle transmission system |
-
2013
- 2013-09-23 CN CN201320587667.7U patent/CN203477132U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650050A (en) * | 2016-04-11 | 2016-06-08 | 青岛力克川液压机械有限公司 | Overload automatic resetting valve of hydraulic motor |
| CN105650050B (en) * | 2016-04-11 | 2017-10-13 | 上海工程技术大学 | A kind of hydraulic motor Exceed load automatic return valve |
| CN110869634A (en) * | 2017-06-30 | 2020-03-06 | 本田技研工业株式会社 | Vehicle transmission system |
| US11067139B2 (en) | 2017-06-30 | 2021-07-20 | Honda Motor Co., Ltd | Vehicle transmission system |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 |