WO2015045941A1 - 油圧式オートテンショナ - Google Patents
油圧式オートテンショナ Download PDFInfo
- Publication number
- WO2015045941A1 WO2015045941A1 PCT/JP2014/074377 JP2014074377W WO2015045941A1 WO 2015045941 A1 WO2015045941 A1 WO 2015045941A1 JP 2014074377 W JP2014074377 W JP 2014074377W WO 2015045941 A1 WO2015045941 A1 WO 2015045941A1
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- WO
- WIPO (PCT)
- Prior art keywords
- plunger
- rod
- gap
- valve
- leak gap
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
- F16H7/12—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
- F16H7/1209—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley with vibration damping means
- F16H7/1236—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley with vibration damping means of the fluid and restriction type, e.g. dashpot
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0802—Actuators for final output members
- F16H2007/0806—Compression coil springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0802—Actuators for final output members
- F16H2007/0812—Fluid pressure
- F16H2007/0814—Fluid pressure with valves opening on surplus pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0889—Path of movement of the finally actuated member
- F16H2007/0893—Circular path
Definitions
- the present invention relates to a hydraulic auto tensioner used for adjusting the tension of a belt that drives an auxiliary machine such as an alternator, a water pump, and a compressor of an air conditioner.
- An engine equipped with an ISG (Integrated Starter Generator) idle stop mechanism that stops the engine when the vehicle stops and starts the engine instantly when the vehicle starts by depressing the accelerator pedal to reduce carbon dioxide emissions Has been proposed.
- ISG Integrated Starter Generator
- FIG. 11B shows an engine belt transmission device equipped with an ISG idle stop mechanism that achieves both engine auxiliary drive and engine start.
- the crankshaft pulley P 1 attached to the crankshaft 1 , a starter-generator pulley P 2 attached to a rotating shaft of the starter-generator 2, looped belt 4 between accessory pulley P 3 attached to a rotating shaft of the auxiliary machine 3 such as a water pump, the normal operation of the engine when, as shown in the figure, it drives the starter-generator 2 and the auxiliary 3 by rotation in the direction indicated by the arrow of the crankshaft pulley P 1, and so as to function the starter-generator 2 as a generator.
- the belt transmission device as described above, a tension pulley 5 provided on the crankshaft pulley P 1 and the starter generator belt portion 4a over the pulley P 2, the swingable pulley arm 6 for rotatably supporting the tension pulley 5
- the adjustment force of the hydraulic auto tensioner A is applied to urge the pulley arm 6 in the direction in which the tension pulley 5 presses the belt 4, and the tension change of the belt 4 is absorbed by the hydraulic auto tensioner A.
- a sealed reservoir chamber is provided between the inner periphery of the cylinder and the outer periphery of the valve sleeve, and the lower portion of the reservoir chamber and the lower portion of the pressure chamber communicate with each other through an oil passage formed in the bottom surface of the cylinder.
- a check valve is installed in the lower end, and when the pushing force is applied to the rod and the pressure in the pressure chamber becomes higher than the pressure in the reservoir chamber, the check valve is closed to block the communication between the oil passage and the pressure chamber. ing.
- the connecting piece provided on the upper surface of the spring seat is rotatably connected to the engine block shown in FIG. 11A, and the connecting piece provided on the lower surface of the cylinder is connected to the pulley arm.
- the check valve is closed, and the oil sealed in the pressure chamber is allowed to slide between the valve sleeve and the rod.
- the fluid is caused to flow through a leak gap formed therebetween, and a hydraulic damper force is generated in the pressure chamber by the viscous resistance of the oil at the time of flow to buffer the pushing force.
- the leak gap is set to a size that can absorb the belt tension fluctuation during the normal operation of the engine, the leak gap is large, so that the rod 4 is pushed greatly when the engine is started by driving the starter generator 2 and the belt 4
- the belt 4 and the pulleys P 1 to P 3 may slip, and the belt life may be shortened and the starter generator 2 may fail to start the engine.
- the leak gap is set to a size that can absorb fluctuations in the tension of the belt 4 when the engine is started by driving the starter generator 2, the leak gap is small, so that the tension of the belt 4 during normal operation of the engine is reduced. Since the belt 4 becomes too high and the belt 4 becomes over-tensioned, the belt 4 and the bearings that rotatably support the pulleys P 1 to P 3 are liable to be damaged, resulting in a problem of increased fuel consumption.
- An object of the present invention is to provide a hydraulic auto tensioner that can apply an appropriate tension to the belt during normal operation of the engine and when the engine is started with a starter generator.
- a valve sleeve is projected on the bottom surface of a bottomed cylinder in which oil is put, and a lower end portion of the rod is inserted into the valve sleeve so that the inside of the valve sleeve
- a pressure spring is provided in the upper part of the rod, and a return spring that urges the cylinder and the rod in a direction to extend is incorporated between the spring seat provided on the upper part of the rod and the bottom surface of the cylinder.
- an oil passage that communicates the lower part of the reservoir chamber and the lower part of the pressure chamber between the outer periphery of the valve sleeve and closes when the pressure in the pressure chamber becomes higher than the pressure in the reservoir chamber.
- a check valve that shuts off the communication between the chamber and the oil passage is provided, and when the pushing force is applied to the rod, the check valve is closed and the oil in the pressure chamber is discharged.
- a cylindrical plunger having a bottom plate at the lower part of the lower end of the rod is provided.
- the plunger is slidable along each of the inner diameter surface of the valve sleeve and the outer diameter surface of the lower end of the rod, and a first leak gap is formed between the sliding surfaces of the plunger and the valve sleeve,
- a retaining means for retaining the plunger in a state where a gap is formed between the bottom plate of the plunger and the lower end surface of the rod is provided, and the elastic force is weaker than the damper force generated by the first leak gap inside the plunger.
- An elastic member is incorporated to urge the plunger downward, and the bottom plate of the plunger has a valve seat on the upper side. The valve hole which is closed by seating against a rod the lower end surface is provided on the inside of the plunger, than is adopted the configuration in which the second leak gap flow resistance is smaller than the first leak gap.
- a spring seat at the end of the rod is attached to a tensioner attachment target such as an engine block.
- the cylinder is connected to a pulley arm that supports the tension pulley, and the tension pulley urges the pulley arm in a direction to press the belt portion between the crankshaft pulley and the motor / generator pulley, thereby tensioning the belt.
- the second leak gap may be an annular gap formed between the sliding surfaces of the rod and the plunger.
- the radial gap amount of the first leak gap is 10 ⁇ m or more and less than 20 ⁇ m
- the radial gap amount of the second leak gap is 20 ⁇ m or more and 60 ⁇ m or less. Appropriate tension can be applied to the belt at each engine start.
- the engine is started during normal operation of the engine and the starter generator. Appropriate tension can be applied to the belt at each time.
- a circular recess having the bottom plate as an upper wall is provided at the lower end of the plunger, and a fitting member is press-fitted into the recess, and a second leak is caused between the fitting surface of the fitting member and the recess or the fitting member itself.
- a gap may be formed.
- the second leak gap may be a spiral groove or an orifice.
- a spiral groove may be sufficient.
- a coil spring, a disc spring or a wave washer can be employed as the elastic member.
- a ring groove is provided on the inner peripheral upper portion of the plunger, a retaining ring is incorporated in the ring groove, and a step portion capable of supporting the inner peripheral portion of the retaining ring is provided on the rod. Things can be adopted.
- the oil in the pressure chamber is leaked into the reservoir chamber from the second leak gap having a small flow path resistance during the normal operation of the engine, while the pressure in the pressure chamber is started when the engine is started by the starter generator.
- the plunger is raised by this to close the valve hole, and the oil in the pressure chamber is leaked into the reservoir chamber from the first leak gap having a large flow path resistance. Therefore, during normal operation of the engine and when starting the engine with the starter generator In each of the belts, an appropriate tension can be applied to the belt.
- FIG. 1 is a longitudinal sectional view showing an embodiment of a hydraulic auto tensioner according to the present invention.
- Sectional drawing which expands and shows the plunger mounting part of FIG. Sectional drawing which shows the closed state of the valve hole formed in the baseplate of a plunger Sectional drawing which shows the other example of the elastic member which urges
- biases a plunger downward Sectional drawing which shows the further another example of the elastic member which urges
- Sectional drawing which shows the further another example of a 2nd leak flow path Sectional drawing which shows the further another example of a 2nd leak flow path Sectional drawing of the state which changed the elastic member shown in FIG. 6 into the wave washer 1 shows a belt transmission device of an engine equipped with an idle stop mechanism, (a) is a front view showing a normal operation state of the engine, and (b) is a front view showing a start state of the engine by a starter
- the cylinder 11 has a bottom portion, and a connecting piece 12 connected to the pulley arm 6 shown in FIG. 11A is provided on the bottom surface of the bottom portion.
- the connecting piece 12 is provided with a shaft insertion hole 12a penetrating from one side surface to the other side surface, and a cylindrical fulcrum shaft 12b and a slide bearing 12c for rotatably supporting the fulcrum shaft 12b in the shaft insertion hole 12a.
- the fulcrum shaft 12b is fixed by tightening a bolt that is inserted into the fulcrum shaft 12b and threadedly engaged with the pulley arm 6, and the cylinder 11 is swingably mounted around the fulcrum shaft 12b.
- a sleeve fitting hole 13 is provided on the bottom surface of the cylinder 11, and a lower end portion of a steel valve sleeve 14 is press-fitted into the sleeve fitting hole 13.
- the lower portion of the rod 15 is slidably inserted into the valve sleeve 14, and the pressure chamber 16 is provided in the valve sleeve 14 below the rod 15 by the insertion of the rod 15.
- a spring seat 17 is fixed to an upper end portion of the rod 15 located outside the cylinder 11, and a return spring 18 incorporated between the spring seat 17 and the bottom surface of the cylinder 11 extends relative to the cylinder 11 and the rod 15. It is energizing in the direction to do.
- a connecting piece 19 connected to the engine block is provided at the upper end of the spring seat 17.
- the connecting piece 19 is formed with a sleeve insertion hole 19a penetrating from one side surface to the other side surface, and a sleeve 19b and a slide bearing 19c for rotatably supporting the sleeve 19b are incorporated in the sleeve insertion hole 19a.
- the connecting piece 19 is rotatably connected to the engine block by a bolt inserted into the sleeve 19b.
- the spring seat 17 is formed of a molded product, and a cylindrical dust cover 20 that covers the upper outer periphery of the cylinder 11 and a cylindrical spring cover 21 that covers the upper portion of the return spring 18 are molded simultaneously to form the spring seat 17. Is integrated.
- the spring seat 17 may be an aluminum die-cast molded product or a resin molded product such as a thermosetting resin.
- the entire outer periphery of the spring cover 21 is covered with a cylindrical body 22 that is insert-molded when the spring seat 17 is molded.
- the cylinder 22 is made of a press-formed product of a steel plate.
- An oil seal 23 as a seal member is incorporated in the upper opening of the cylinder 11, and the inner periphery of the oil seal 23 is in elastic contact with the outer peripheral surface of the cylindrical body 22 to close the upper opening of the cylinder 11. This prevents the oil filled inside the tank from leaking to the outside and prevents dust from entering the inside.
- a sealed reservoir chamber 24 is formed between the cylinder 11 and the valve sleeve 14.
- the reservoir chamber 24 and the pressure chamber 16 are an oil reservoir comprising an oil passage 25 formed between the fitting surfaces of the sleeve fitting hole 13 and the valve sleeve 14 and a circular recess formed at the center of the bottom surface of the sleeve fitting hole 13. 26 to communicate with each other.
- a check valve 27 is incorporated in the lower end of the valve sleeve 14.
- the check valve 27 closes when the pressure in the pressure chamber 16 becomes higher than the pressure in the reservoir chamber 24, shuts off the communication between the pressure chamber 16 and the oil passage 25, and the oil in the pressure chamber 16 passes through the oil passage 25. Thus, the flow to the reservoir chamber 24 is prevented.
- a plunger 30 is fitted to the lower end portion of the rod 15 located in the valve sleeve 14.
- the plunger 30 has a cylindrical shape having a bottom plate 31 at the bottom, a protrusion 32 is provided at the center of the upper surface of the bottom plate 31, and a valve penetrating vertically on the axis of the protrusion 32.
- a hole 33 is provided.
- valve seat 34 The upper surface of the protrusion 32 is a valve seat 34, and the valve hole 33 is closed by the seating of the valve seat 34 on the flat lower end surface of the rod 15.
- the valve seat 34 has an arcuate cross section, but may be a flat surface as shown in FIGS. 4 and 5.
- the plunger 30 is slidable along the outer diameter surface of the rod 15 and the inner diameter surface of the valve sleeve 14, and an annular gap is provided between the sliding surfaces with respect to the valve sleeve 14, and the annular gap is the first leak. there is a gap L 1. On the other hand, an annular gap in between the sliding surfaces against the rod 15 is formed, the annular gap is a second leak gap L 2.
- the gap amount of the first leak gap radially in L 1 is less than 20 ⁇ m more than 10 [mu] m.
- the gap amount of the second leak gap L 2 in the radial direction is a 20 ⁇ m or 60 ⁇ m or less, the flow path resistance of the second leak gap L 2 is smaller than the flow path resistance of the first leak gap L 1.
- the plunger 30 is biased downward by an elastic member 37 incorporated between the lower end surface of the rod 15 and the bottom plate 31, and the valve seat 34 and the rod 15 are provided by retaining means 40 provided between the rod 15 and the plunger 30. In a state in which a gap is formed between the lower end surfaces of the valve, that is, in a state in which the valve hole 33 is opened, it is prevented from being removed.
- the elastic member 37 is not limited to this.
- a disc spring as shown in FIG. 4 may be used, or a wave washer as shown in FIG. 5 may be used.
- the elastic force of the elastic member 37 is weaker than the damping force generated by the first leak gap L 1, it is stronger than the damping force generated by the second leak gap L 2.
- the retaining means 40 is provided with a ring groove 41 in the upper inner periphery of the plunger 30, a retaining ring 42 is incorporated in the ring groove 41, and an annular groove in which the inner peripheral portion of the retaining ring 42 can be fitted to the rod 15. 43 is provided, and the plunger 30 is prevented from being pulled out by contact of the inner peripheral portion of the retaining ring 42 with the lower step portion 44 of the annular groove 43.
- the hydraulic auto tensioner shown in the embodiment has the above-described configuration.
- the connecting piece 12 provided on the connecting portion 12 is connected to the engine block, and the connecting piece 19 of the spring seat 17 is connected to the pulley arm 6 to apply an adjusting force to the pulley arm 6.
- the second leak gap L 2 because they are set the tension fluctuation of the belt 4 during normal operation of the engine absorbable size, the tension of the belt 4 during normal operation of the engine becomes too high Rather, it is held at the proper tension.
- the annular gap formed between the sliding surfaces of the rod 15 and the plunger 30 is the second leak gap L 2 , but the second leak gap L 2 is not limited to this. 6 to 9 show another example of the second leak gap L 2.
- a circular recess 50 having a bottom plate 31 as an upper wall is provided at the lower end of the plunger 30, and a disk-shaped fitting member 51 is press-fitted into the recess 50.
- a flat portion 53 that forms a gap 52 between the inner diameter surfaces of the circular recess 50 is provided in a part of the circumference, and a spiral groove that communicates the gap 52 and the valve hole 33 is formed on the upper surface of the fitting member 51.
- the second is leak gap provided L 2 consisting of spiral grooves on the upper surface of the fitting member 51, provided with a second leak gap L 2 consisting of spiral grooves on the lower surface side of the base plate 31 Also good.
- a disc-shaped fitting member 51 is press-fitted into a circular concave portion 50 formed at the lower end portion of the plunger 30, and a tapered concave portion 54 and the tapered concave portion 54 are inserted into the fitting hole 51 as a valve hole. 33 of a small diameter orifice which communicates provided, and the orifice and the second leak gap L 2.
- a cap-like fitting member 51 is press-fitted into a circular recess 50 formed at the lower end portion of the plunger 30, a spiral groove is provided on the outer periphery of the fitting member 51, and the spiral groove is provided as a second leak.
- a gap L 2 In this case, it may be provided a second leak gap L 2 consisting of a spiral groove on the inner surface of the circular recess 50.
- the plunger 30 is prevented from being pulled out by abutment of the retaining ring 42 against the lower step portion 44 of the annular groove 43 formed on the outer diameter surface of the rod 15, but as shown in FIG. A flange 45 fitted with a gap between the inner diameter surfaces of the plunger 30 is provided, and the upper surface of the flange 30 is a stepped portion 46, and the plunger 30 is prevented from being pulled out by contact of the retaining ring 42 with the stepped portion 46. Good.
- the plunger 30 is prevented from being pulled out by the abutment of the retaining ring 42 against the upper surface of the flange 45, as in FIG. 6.
- a columnar valve body 47 is provided on the lower surface of the flange 45, and a conical surface 47 a formed at the lower end of the valve body 47 is formed above the valve hole 33.
- the formed valve seat 34 is seated to close the valve hole 33.
- the plunger 30 is urged downward by an elastic member 37 made up of a plurality of stacked disc springs.
- the elastic member 37 As the elastic member 37, the wave washer shown in FIG. May be adopted.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
Description
14 バルブスリーブ
15 ロッド
16 圧力室
17 ばね座
18 リターンスプリング
24 リザーバ室
25 油通路
27 チェックバルブ
30 プランジャ
31 底板
33 弁孔
34 弁座
37 弾性部材
40 抜止め手段
41 リング溝
42 止め輪
44 段部
46 段部
50 円形凹部
51 嵌合部材
54 テーパ状凹部
L1 第1リーク隙間
L2 第2リーク隙間
Claims (8)
- オイルが入れられた底付きシリンダの底面上にバルブスリーブを突設し、そのバルブスリーブの内部にロッドの下端部を挿入してバルブスリーブ内に圧力室を設け、前記ロッドの上部に設けられたばね座とシリンダの底面間に、シリンダとロッドを伸張する方向に付勢するリターンスプリングを組込み、前記シリンダの底部には、前記シリンダの内周とバルブスリーブの外周間にリザーバ室の下部と前記圧力室の下部を連通する油通路を形成し、前記バルブスリーブの下端部内に前記圧力室の圧力がリザーバ室内の圧力より高くなると閉鎖して圧力室と油通路の連通を遮断するチェックバルブを設け、前記ロッドに押込み力が負荷された際にチェックバルブを閉じ、圧力室内のオイルをリザーバ室にリークさせて圧力室内のオイルによる油圧ダンパ作用によってロッドに負荷される押込み力を緩衝するようにした油圧式オートテンショナにおいて、
前記ロッドの下端部に底板を下部に有する円筒状のプランジャを嵌合し、そのプランジャを前記バルブスリーブの内径面およびロッドの下端部外径面のそれぞれに沿って摺動自在として、前記プランジャとバルブスリーブの摺動面間に第1リーク隙間を形成し、前記プランジャの底板と前記ロッドの下端面間に間隔が形成される状態でプランジャを抜止めする抜止め手段を設け、前記プランジャの内部に前記第1リーク隙間によって発生するダンパ力より弾性力の弱い弾性部材を組み込んでプランジャを下向きに付勢し、前記プランジャの底板には、弁座を上側に有し、その弁座のロッド下端面に対する着座によって閉鎖状態とされる弁孔を設け、前記プランジャの内側には、前記第1リーク隙間より流路抵抗が小さい第2リーク隙間を設けたことを特徴とする油圧式オートテンショナ。 - 前記第2リーク隙間が、前記ロッドと前記プランジャの摺動面間に形成された円環状隙間からなる請求項1に記載の油圧式オートテンショナ。
- 前記第1リーク隙間の径方向の隙間量を10μm以上20μm未満とし、前記第2リーク隙間の径方向の隙間量を20μm以上60μm以下とした請求項2に記載の油圧式オートテンショナ。
- 前記第2リーク隙間で発生するダンパ力を前記第1リーク隙間で発生するダンパ力の1/2~1/20の範囲とした請求項1乃至3のいずれか1項に記載の油圧式オートテンショナ。
- 前記プランジャの下端部に前記底板を上壁とする円形凹部を設け、その凹部内に嵌合部材を圧入し、その嵌合部材と凹部の嵌合面間又は嵌合部材そのものに前記第2リーク隙間が形成された請求項1に記載の油圧式オートテンショナ。
- 前記第2リーク隙間が、渦巻き溝、オリフィス、螺旋溝の一種からなる請求項5に記載の油圧式オートテンショナ。
- 前記弾性部材が、コイルスプリング、皿ばね、ウェーブワッシャの一種からなる請求項1乃至6のいずれか1項に記載の油圧式オートテンショナ。
- 前記抜止め手段が、前記プランジャの内周上部にリング溝を設け、そのリング溝内に止め輪を組み込み、前記ロッドには前記止め輪の内周部を支持可能な段部を設けた構成からなる請求項1乃至7のいずれか1項に記載の油圧式オートテンショナ。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/023,094 US9677649B2 (en) | 2013-09-26 | 2014-09-16 | Hydraulic auto-tensioner |
EP14847949.6A EP3051178A4 (en) | 2013-09-26 | 2014-09-16 | Hydraulic auto-tensioner |
CN201480046505.XA CN105473897B (zh) | 2013-09-26 | 2014-09-16 | 油压式自动张紧器 |
Applications Claiming Priority (2)
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JP2013199929A JP6182411B2 (ja) | 2013-09-26 | 2013-09-26 | 油圧式オートテンショナ |
JP2013-199929 | 2013-09-26 |
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WO2015045941A1 true WO2015045941A1 (ja) | 2015-04-02 |
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PCT/JP2014/074377 WO2015045941A1 (ja) | 2013-09-26 | 2014-09-16 | 油圧式オートテンショナ |
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US (1) | US9677649B2 (ja) |
EP (1) | EP3051178A4 (ja) |
JP (1) | JP6182411B2 (ja) |
CN (1) | CN105473897B (ja) |
WO (1) | WO2015045941A1 (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2015192253A1 (en) * | 2014-06-20 | 2015-12-23 | Litens Automotive Partnership | Tensioner with hydraulic locking feature |
JP6463998B2 (ja) * | 2015-03-11 | 2019-02-06 | Ntn株式会社 | 油圧式オートテンショナ |
JP6513523B2 (ja) * | 2015-07-28 | 2019-05-15 | Ntn株式会社 | 油圧式オートテンショナ |
JP6599165B2 (ja) * | 2015-08-11 | 2019-10-30 | Ntn株式会社 | 油圧式オートテンショナ |
JP2017040276A (ja) * | 2015-08-17 | 2017-02-23 | Ntn株式会社 | 油圧式オートテンショナ |
JP6664910B2 (ja) * | 2015-09-08 | 2020-03-13 | Ntn株式会社 | 油圧式オートテンショナ |
JP6644504B2 (ja) * | 2015-09-24 | 2020-02-12 | Ntn株式会社 | 油圧式オートテンショナ |
WO2017043491A1 (ja) * | 2015-09-09 | 2017-03-16 | Ntn株式会社 | 油圧式オートテンショナ、及び、油圧式オートテンショナ用プランジャの製造方法 |
JP6537415B2 (ja) * | 2015-09-10 | 2019-07-03 | Ntn株式会社 | 油圧式オートテンショナ |
JP6539564B2 (ja) * | 2015-10-26 | 2019-07-03 | Ntn株式会社 | 油圧式オートテンショナ |
FR3062888B1 (fr) * | 2017-02-14 | 2019-06-14 | Hutchinson | Tendeur de courroie |
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- 2014-09-16 CN CN201480046505.XA patent/CN105473897B/zh not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
US20160230854A1 (en) | 2016-08-11 |
JP6182411B2 (ja) | 2017-08-16 |
EP3051178A4 (en) | 2017-02-22 |
EP3051178A1 (en) | 2016-08-03 |
JP2015068352A (ja) | 2015-04-13 |
US9677649B2 (en) | 2017-06-13 |
CN105473897A (zh) | 2016-04-06 |
CN105473897B (zh) | 2018-04-06 |
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