WO2012081511A1 - 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
- WO2012081511A1 WO2012081511A1 PCT/JP2011/078534 JP2011078534W WO2012081511A1 WO 2012081511 A1 WO2012081511 A1 WO 2012081511A1 JP 2011078534 W JP2011078534 W JP 2011078534W WO 2012081511 A1 WO2012081511 A1 WO 2012081511A1
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- WO
- WIPO (PCT)
- Prior art keywords
- valve sleeve
- separator
- hydraulic
- plunger
- auto tensioner
- 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
- F16H7/0829—Means for varying tension of belts, ropes, or chains with vibration damping means
- F16H7/0836—Means for varying tension of belts, ropes, or chains 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
- F16H7/0848—Means for varying tension of belts, ropes, or chains with means for impeding reverse motion
- F16H2007/0859—Check valves
Definitions
- the present invention relates to a hydraulic auto tensioner that maintains a constant tension of a timing belt and an auxiliary machine driving belt in a cam shaft driving belt transmission of an internal combustion engine.
- a timing belt (hereinafter simply referred to as a belt) due to a change in inter-axis distance due to thermal expansion of the engine body during engine operation or a secular change, The belt tension changes.
- the adjustment force of the hydraulic auto tensioner is applied to the belt, and the tension of the belt is kept constant, thereby preventing the generation of noise and tooth skipping due to belt flapping. I am doing so.
- the hydraulic auto tensioner As the hydraulic auto tensioner, the upper opening of the cylinder in which the bottomed sleeve is fitted is sealed by incorporating a seal member, and an air reservoir is provided on the oil level of the hydraulic oil filled in the cylinder, and the seal A slidable plunger is provided at the lower end located inside the sleeve of the push rod that slidably penetrates the member, and a damper action by the hydraulic pressure in the pressure chamber formed below the plunger, and a return incorporated in the cylinder 2.
- a hydraulic auto tensioner having a gas-liquid two-phase structure in which a tension of a belt is kept constant by an action of a spring pressing the push rod outward is known.
- the length of the plunger spring in a natural state is brought into contact with the lower surface of the plunger in a state where the lower portion of the plunger is inserted into the opening end portion of the sleeve.
- the plunger spring is inserted into the sleeve and filled with hydraulic oil to the extent that the plunger spring is immersed in the sleeve, while the lower end of the push rod fitted with the return spring and the seal member is
- the hydraulic damper unit is formed by inserting it into the rod insertion hole formed in the upper part of the plunger.
- the hydraulic damper unit is inserted into the cylinder with the plunger first, and the plunger is inserted into the sleeve by pushing the push rod. After insertion, inject hydraulic fluid from the top opening of the cylinder and We propose a method of assembling the hydraulic auto-tensioner which is adapted to seal the opening in the sealing member.
- An object of the present invention is to facilitate the assembly of a hydraulic auto tensioner having a gas-liquid two-phase structure.
- a steel bottomed valve sleeve is inserted into a cylinder whose lower portion is closed, and a plunger is slidably incorporated into the inside of the valve sleeve.
- a pressure chamber and an upper reservoir chamber are formed, and a seal member is formed to seal the upper opening of the cylinder and form an air reservoir on the hydraulic oil sealed inside the cylinder, and the seal member is slidable
- the lower end portion of the push rod penetrating into the plunger is inserted into a rod insertion hole formed in the upper portion of the plunger, and a passage for communicating the pressure chamber and the reservoir chamber is provided in the plunger, and the pressure in the pressure chamber is provided in the passage.
- a check valve is provided to close the passage when the pressure in the chamber becomes higher, and the plunger spring that urges the plunger toward the push rod in the pressure chamber
- the valve sleeve, the plunger and the plunger spring are integrated by the retaining of the plunger to be hydraulic.
- the damper unit is formed, and the configuration in which the inside of the valve sleeve is filled with the hydraulic oil in the formed state of the hydraulic damper unit is adopted.
- valve sleeve, the plunger, and the plunger spring are integrated by retaining the plunger to form a hydraulic damper unit, and the inside of the valve sleeve is filled with the hydraulic oil before the hydraulic damper unit is assembled.
- the hydraulic auto tensioner can be put into an assembled state by injecting hydraulic oil into the interior and assembling the seal member and the push rod.
- a circumferential engagement groove is formed on the inner periphery of the opening end of the valve sleeve, and a plunger is retained by attaching an elastic ring to the engagement groove.
- a method of press-fitting a countersunk toothed washer having a plurality of inclined teeth on the outer periphery into the open end of the sleeve and retaining the plunger with the countersink toothed washer can be employed.
- the valve sleeve has a throttle portion that forms a minute gap with the push rod, and a tapered cylindrical portion is formed at the lower end of the throttle portion, and a lower portion of the tapered cylindrical portion is formed. It is possible to employ a method in which a separator having a flange formed on the large diameter end to cover the upper end opening of the valve sleeve is provided, and the separator is connected to the valve sleeve to prevent the plunger from being pulled out.
- the elastic ring is formed by a C-shaped retaining ring for a hole, a C-shaped concentric retaining ring for a hole, a rectangular clip formed by bending a wire, or by bending a wire. Triangulated clips can be used.
- a tapered guide surface is provided on the inner periphery of the opening end of the valve sleeve, it is possible to guide the incorporation of the elastic ring or countersunk toothed washer by the guide surface. It is possible to facilitate the incorporation of a toothed washer.
- connection method (I) A method in which a cylindrical portion is provided downward from the outer peripheral portion of the flange of the separator, and the cylindrical portion is press-fitted into the outer diameter surface of a small-diameter cylindrical portion formed at the upper end portion of the valve sleeve.
- Connection method (III) A cylindrical portion is provided downward from the outer peripheral portion of the flange of the separator, and the cylindrical portion is fitted to the outer diameter surface of the small diameter cylindrical portion formed at the upper end portion of the valve sleeve. A method in which an engagement groove is provided on the radial surface so as to face the lower opening end of the cylindrical portion, and the opening end portion of the cylindrical portion is crimped inward.
- Connection method (V) A method in which a cylindrical portion is provided upward from the outer peripheral portion of the flange of the separator, and the cylindrical portion is press-fitted into the inner diameter surface of the upper end portion of the valve sleeve.
- connection methods (IV) and (V) a stronger connection state can be obtained by crimping the upper end of the valve sleeve inward to prevent the separator from being removed.
- the return spring may be incorporated in the cylinder chamber or may be incorporated outside the cylinder.
- valve sleeve, the plunger and the plunger spring are integrated by retaining the plunger to form a hydraulic damper unit, and the valve sleeve is filled with the hydraulic oil in a state before the hydraulic damper unit is assembled.
- the hydraulic oil can be injected only once into the cylinder, and the work of venting air is not required after the hydraulic damper unit is assembled to the cylinder.
- the hydraulic auto tension can be assembled very easily.
- FIG. 1 is a longitudinal sectional view showing an embodiment of a hydraulic auto tensioner according to the present invention.
- Longitudinal sectional view of hydraulic damper unit consisting of valve sleeve, plunger and plunger spring Sectional view along line III-III in FIG. (4A) is a cross-sectional view showing another example of the elastic ring
- (4B) is a cross-sectional view taken along line IV-IV in (4A).
- (5A) and (5B) are cross-sectional views showing still other examples of elastic rings Sectional view showing an installation example using a countersink toothed washer Sectional view along line VII-VII in FIG.
- the hydraulic auto tensioner according to the present invention has a cylinder 11 attached to an engine block.
- the cylinder 11 is made of an aluminum alloy and has a bottom, and a valve sleeve 12 is fitted therein.
- the valve sleeve 12 is made of steel and has a bottom.
- the upper opening of the cylinder 11 is hermetically sealed by incorporating a seal member 13 made of an oil seal, and the seal member 13 is retained by a retaining ring 14 attached to the inner periphery of the upper end of the cylinder 11. Leakage of the hydraulic oil filled in the inside of 11 is prevented.
- An air reservoir 15 is provided on the oil surface of the hydraulic oil.
- a wear ring 17 slidable along the inner diameter surface of the cylinder 11 is fitted to a push rod 16 slidably penetrating the seal member 13 at a portion located above the upper end opening of the valve sleeve 12.
- a return spring 18 incorporated between 17 and the upper end of the valve sleeve 12 biases the push rod 16 in a direction protruding from the upper opening of the cylinder 11.
- the plunger 19 is slidably incorporated in the valve sleeve 12, and the interior of the valve sleeve 12 is partitioned into a pressure chamber 20 and a reservoir chamber 21 by incorporating the plunger 19.
- the plunger 19 has a rod insertion hole 22 on the upper surface, and the lower end of the push rod 16 is fitted in the rod insertion hole 22.
- the plunger 19 is pressed against the lower end of the push rod 16 by a plunger spring 23 incorporated in the pressure chamber 20.
- the plunger 19 is formed with a passage 24 communicating with the pressure chamber 20 formed below and the reservoir chamber 21 formed above, and a check valve 25 is incorporated in an opening of the passage 24 on the pressure chamber 20 side. ing.
- the check valve 25 closes the passage 24 when the pressure in the pressure chamber 20 becomes higher than the pressure in the reservoir chamber 21.
- a separator 26 is incorporated on the upper side of the valve sleeve 12.
- the separator 26 has a cylindrical throttle portion 26a that forms a minute gap with the push rod 16, and a lower large-diameter tapered cylindrical portion 26b is formed at the lower end of the throttle portion 26a.
- the tapered cylindrical portion 26b A flange 26c that covers the upper end opening of the valve sleeve 12 is formed at the lower large-diameter end.
- a rod guide 26d is formed at the upper end of the narrowed portion 26a, and the rod guide 26d has a tapered shape with an upper portion having a large diameter.
- the separator 26 prevents the air in the air reservoir 15 from entering the pressure chamber 20 from the valve sleeve 12.
- a circumferential engagement groove 27 is formed on the inner periphery of the open end of the valve sleeve 12.
- a C-shaped retaining ring for hole 28 as an elastic ring is attached to the engaging groove 27, and the plunger 19 is prevented from being pulled out by the C-shaped retaining ring for hole 28, and includes a valve sleeve 12, a plunger 19, and a plunger spring 23.
- a hydraulic damper unit A is formed, and in the hydraulic damper unit A, the hydraulic oil is filled in the valve sleeve 12 at a stage before the assembly of the hydraulic auto tensioner to be assembled in the cylinder 11.
- FIG. 1 shows a radial through hole 29 formed in the upper end portion of the push rod 16 and a radial pin hole formed in the upper portion of the cylinder 11.
- a state in which the set pin 30 is inserted so as to straddle (not shown) and the push rod 16 is held in the pushed state is shown.
- the cylinder 11 When adjusting the tension of the camshaft driving timing belt, the cylinder 11 is fixed to the engine block, the set pin 30 is pulled out, and is supported by a push rod 16 that moves outward by pressing of the return spring 18 so as to be swingable.
- the pulley arm not shown is pressed, the tension pulley supported rotatably by the pulley arm is pressed against the belt, and the pushing force applied to the push rod 16 from the belt through the pulley arm is used as a damper action by the hydraulic oil in the pressure chamber 20 To maintain the belt tension constant.
- the hydraulic damper unit A shown in FIG. 2 filled with hydraulic oil is inserted into the cylinder 11 from the upper opening.
- the hydraulic damper unit A is inserted into the cylinder 11 with the opening of the valve sleeve 12 facing upward, and after inserting the hydraulic damper unit A to a position where the sleeve 12 is supported by the bottom of the cylinder 11,
- the separator 26 and the return spring 18 are assembled, and a necessary amount of hydraulic oil is injected into the cylinder 11 before or after the return spring 18 is assembled.
- the required amount of hydraulic oil has already been injected, so that no additional injection is necessary.
- the push rod 16 with the wear ring 17 and the seal member 13 assembled is inserted into the cylinder 11, the lower end of the push rod 16 is inserted into the rod insertion hole 22 of the plunger 19, and
- the assembly of the auto tensioner is completed by incorporating the seal member 13 into the upper end opening of the cylinder 11 and attaching the retaining ring 14 within the upper end portion of the cylinder 11.
- the C-shaped retaining ring 28 for holes is shown as an elastic ring for retaining the plunger 19, but the elastic ring is not limited to this.
- 4 (4A), (4B) and FIGS. 5 (5A), (5B) show other examples of elastic rings.
- 4 (4A) and 4 (B) the C-shaped concentric retaining ring 31 for holes is used as an elastic ring
- a rectangular clip 32 formed by bending a wire is used as an elastic ring.
- a triangular clip 33 formed by bending a wire is employed as the elastic ring.
- a countersunk toothed washer 34 is press-fitted into the open end of the valve sleeve 12, and the tip edges of a plurality of inclined teeth 35 formed on the outer periphery of the countersink toothed washer 34 are connected to the inner diameter of the valve sleeve 12.
- the plate-shaped toothed washer 34 is pulled out by biting into the surface, and the plunger 19 is blocked by the plate-shaped toothed washer 34.
- the tip of the inclined tooth 35 is engaged with an engaging groove 27 formed on the inner periphery of the opening end of the valve sleeve 12, as shown in FIG. You may make it make it.
- FIGS. 6 and 8 the inner periphery of the opening end of the valve sleeve 12 is shown in FIGS. As shown in FIGS. 6 and 8, a tapered guide surface 36 is formed.
- FIG. 9 shows still another example of retaining the plunger 19.
- a lower cylindrical portion 26 e of the outer peripheral lower portion of the flange 26 c of the separator 26 is formed, and the cylindrical portion 26 e is press-fitted into the outer diameter surface of the small diameter cylindrical portion 12 a formed at the upper end portion of the valve sleeve 12.
- the hydraulic damper unit A is formed by connecting the separator 26 to 12.
- the separator 26 is connected to the valve sleeve 12 by press-fitting the cylindrical portion 26e with respect to the small diameter cylindrical portion 12a, but the connection of the separator 26 to the valve sleeve 12 is not limited to this.
- 10 to 15 show other examples of the connection of the separator 26 to the valve sleeve 12.
- the downward cylindrical portion 26e formed on the outer periphery of the flange 26c is fitted to the outside of the small-diameter cylindrical portion 12a formed on the upper end portion of the valve sleeve 12, and the open end is added inwardly.
- the caulking piece 41 is engaged with an engagement groove 40 formed on the outer diameter surface of the small diameter cylindrical portion 12a.
- a plurality of engaging claws 42 are provided downward from the outer periphery of the flange 26c of the separator 26, the distal end portions of the engaging claws 42 are caulked inward, and the caulking pieces 43 are joined to the small diameter cylindrical portion. It is made to engage with the engaging groove 40 formed in the outer diameter surface of 12a.
- a cylindrical portion 44 is provided downward from the outer peripheral portion of the flange 26 c of the separator 26, and the cylindrical portion 44 is press-fitted into the inner diameter surface of the large-diameter hole portion 45 formed in the upper end portion of the valve sleeve 12. I am doing so.
- a cylindrical portion 46 is provided upward from the outer peripheral portion of the flange 26 c of the separator 26, and the cylindrical portion 46 is press-fitted into the inner diameter surface of the upper end portion of the valve sleeve 12.
- valve sleeve 12 In the connection between the valve sleeve 12 and the separator 26 shown in FIG. 13, as shown in FIG. 14, the upper end surface of the valve sleeve 12 is caulked inward, and a caulking piece 47 that can be engaged with the upper end surface of the cylindrical portion 46. By providing this, a stronger connection state can be obtained.
- a plurality of engaging claws 48 having bent pieces 48a at the tip thereof are provided at the distal end on the outer peripheral portion of the flange 26c of the separator 26 at intervals in the circumferential direction.
- Each of the engaging claws 48 is engaged with an engaging groove 49 formed on the inner diameter surface of the upper end portion of the valve sleeve 12.
- the engaging groove 49 may be omitted, and the engaging claw 48 may be engaged with the inner diameter surface of the upper end portion of the valve sleeve 12.
- a hydraulic self-tensioner for adjusting the tension of a timing belt for camshaft drive with a built-in spring, in which a return spring 18 is incorporated in the reservoir chamber 21, is shown as a hydraulic auto-tensioner. It is not limited to.
- a return spring 18 is assembled outside the cylinder 11, one end of the return spring 18 is supported by a spring seat 50 provided on the outer periphery of the lower end of the cylinder 11, and the other end May be received by a spring seat 51 attached to the tip of the push rod 16, and the spring seat 51 may be provided with a connecting piece 52 for connecting a pulley arm.
- a Hydraulic damper unit 11 Cylinder 12 Valve sleeve 13 Seal member 15 Air reservoir 16 Push rod 17 Wear ring 18 Return spring 19 Plunger 20 Pressure chamber 21 Reservoir chamber 22 Rod insertion hole 23 Plunger spring 24 Passage 25
- Check valve 26 Separator 26a Restriction portion 26b Tapered cylindrical portion 26c Flange 26d Rod guide 26e Cylindrical portion 27 Engaging groove 28 C-shaped retaining ring for hole (elastic ring) 31 C-shaped concentric retaining ring for holes (elastic ring) 32, 33 clip (elastic ring) 34 Washers with countersink teeth 35 Inclined teeth 36 Guide surfaces 40, 42, 48 Engaging claws 41, 43, 47 Caulking pieces 44, 46 Cylindrical part 45 Large diameter hole 48 Engaging claws 49 Engaging grooves 50, 51 Spring Seat 52 connecting piece
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
Description
連結方法(I):セパレータのフランジ外周部から下向きに円筒部を設け、その円筒部をバルブスリーブの上端部に形成された小径筒部の外径面に圧入する方法。
連結方法(II):セパレータのフランジ外周部から下向きに複数の係合爪を設け、バルブスリーブの上端部に形成された小径筒部の外径面に係合溝を設け、その係合溝に係合爪を係合する方法。
連結方法(III):セパレータのフランジ外周部から下向きに円筒部を設け、その円筒部をバルブスリーブの上端部に形成された小径筒部の外径面に嵌合し、上記小径筒部の外径面には円筒部の下部開口端に対向して係合溝を設け、上記円筒部の開口端部を内向きに加締める方法。
連結方法(IV):セパレータのフランジ外周部から下向きに円筒部を設け、その円筒部をバルブスリーブの上端部内に形成された大径孔部の内径面に圧入する方法。
連結方法(V):セパレータのフランジ外周部から上向きに円筒部を設け、その円筒部をバルブスリーブの上端部内径面に圧入する方法。
連結方法(VI):セパレータのフランジ外周部に内斜め上方に向く折曲げ片部を先端に有する複数の係合爪を周方向に間隔をおいて設け、その複数の係合爪のそれぞれをバルブスリーブの上端部内径面に係合させてバルブスリーブにセパレータを連結する方法。
11 シリンダ
12 バルブスリーブ
13 シール部材
15 空気溜り
16 プッシュロッド
17 ウェアリング
18 リターンスプリング
19 プランジャ
20 圧力室
21 リザーバ室
22 ロッド挿入孔
23 プランジャスプリング
24 通路
25 チェックバルブ
26 セパレータ
26a 絞り部
26b テーパ筒部
26c フランジ
26d ロッドガイド
26e 円筒部
27 係合溝
28 穴用C形止め輪(弾性リング)
31 穴用C形同心止め輪(弾性リング)
32、33 クリップ(弾性リング)
34 皿形歯付き座金
35 傾斜歯
36 案内面
40、42,48 係合爪
41、43、47 加締め片
44、46 円筒部
45 大径孔部
48 係合爪
49 係合溝
50、51 ばね座
52 連結片
Claims (19)
- 下部が閉塞するシリンダの内部に鋼製の底付きのバルブスリーブを挿入し、そのバルブスリーブの内部にプランジャを摺動自在に組み込んで、その下方に圧力室と、上方にリザーバ室とを形成し、前記シリンダの上部開口を密封してシリンダの内部に封入された作動油上に空気溜りを形成するシール部材を設け、そのシール部材をスライド自在に貫通するプッシュロッドの下端部を前記プランジャの上部に形成されたロッド挿入孔に挿入し、前記プランジャには圧力室とリザーバ室とを連通する通路を設け、その通路に圧力室の圧力がリザーバ室の圧力より高くなると通路を閉じるチェックバルブを設け、前記圧力室にはプランジャをプッシュロッドに向けて付勢するプランジャスプリングを組込み、前記プッシュロッドをリターンスプリングによりシリンダの上端開口から突出する方向に向けて付勢した油圧式オートテンショナにおいて、
前記バルブスリーブ、プランジャおよびプランジャスプリングを、前記プランジャの抜止めにより一体化して油圧ダンパユニットを形成し、その油圧ダンパユニットの形成状態でバルブスリーブ内が作動油で満たされるようにしたことを特徴とする油圧式オートテンショナ。 - 前記バルブスリーブの開口端部の内周に周方向の係合溝を形成し、その係合溝に対する弾性リングの取付けによりプランジャを抜止めして油圧ダンパユニットを形成した請求項1に記載の油圧式オートテンショナ。
- 前記弾性リングが、穴用C形止め輪からなる請求項2に記載の油圧式オートテンショナ。
- 前記弾性リングが、穴用C形同心止め輪からなる請求項2に記載の油圧式オートテンショナ。
- 前記弾性リングが、線材の折曲げにより形成された矩形形状のクリップからなる請求項2に記載の油圧式オートテンショナ。
- 前記弾性リングが、線材の折曲げにより形成された三角形状のクリップからなる請求項2に記載の油圧式オートテンショナ。
- 前記バルブスリーブの開口端部内に、複数の傾斜歯を外周に有する皿形歯付き座金を圧入し、その皿形歯付き座金によりプランジャを抜止めして油圧ダンパユニットを形成した請求項1に記載の油圧式オートテンショナ。
- 前記バルブスリーブの開口端部の内周にテーパ状の案内面を設けた請求項1乃至7のいずれかの項に記載の油圧式オートテンショナ。
- 前記バルブスリーブ上に、前記プッシュロッドとの間に微小間隙を形成する絞り部を有し、その絞り部の下端にテーパ筒部が形成され、そのテーパ筒部の下部大径端に前記バルブスリーブの上端開口を覆うフランジが形成されたセパレータを設け、そのセパレータをバルブスリーブに連結してプランジャを抜止めした請求項1に記載の油圧式オートテンショナ。
- 前記セパレータのフランジ外周部から下向きに円筒部を設け、その円筒部をバルブスリーブの上端部に形成された小径筒部の外径面に圧入して、バルブスリーブにセパレータを連結した請求項9に記載の油圧式オートテンショナ。
- 前記セパレータのフランジ外周部から下向きに円筒部を設け、その円筒部をバルブスリーブの上端部に形成された小径筒部の外径面に嵌合し、前記小径筒部の外径面には円筒部の下部開口端に対向して係合溝を設け、前記円筒部の開口端部を内向きに加締めてバルブスリーブにセパレータを連結した請求項9記載の油圧式オートテンショナ。
- 前記セパレータのフランジ外周部から下向きに複数の係合爪を設け、前記バルブスリーブの上端部に形成された小径筒部の外径面に係合溝を設け、その係合溝に前記係合爪を係合してバルブスリーブにセパレータを連結した請求項9に記載の油圧式オートテンショナ。
- 前記セパレータのフランジ外周部から下向きに円筒部を設け、その円筒部をバルブスリーブの上端部内に形成された大径孔部の内径面に圧入してバルブスリーブにセパレータを連結した請求項9に記載の油圧式オートテンショナ。
- 前記セパレータのフランジ外周部から上向きに円筒部を設け、その円筒部をバルブスリーブの上端部内径面に圧入してバルブスリーブにセパレータを連結した請求項9に記載の油圧式オートテンショナ。
- 前記バルブスリーブの上端部を内向きに加締めてセパレータを抜止めした請求項13又は14に記載の油圧式オートテンショナ。
- 前記セパレータのフランジ外周部に内斜め上方に向く折曲げ片部を先端に有する複数の係合爪を周方向に間隔をおいて設け、その複数の係合爪のそれぞれをバルブスリーブの上端部内径面に係合させてバルブスリーブにセパレータを連結した請求項9に記載の油圧式オートテンショナ。
- 前記バルブスリーブの上端部内径面に、前記複数の係合爪のそれぞれが係合する係合溝を設けた請求項16に記載の油圧式オートテンショナ。
- 前記リターンスプリングが、リザーバ室内に組み込まれてカム軸駆動用タイミングベルトの張力調整用とされた請求項1乃至17のいずれかの項に記載の油圧式オートテンショナ。
- 前記リターンスプリングが、前記シリンダの外側に組み込まれ、前記プッシュロッドの先端部およびシリンダの後端部外周にそのリターンスプリングの端部を受けるばね座が設けられ、前記ロッド側ばね座にプーリアーム連結用の連結片が設けられて補機駆動用ベルトの張力調整用とされた請求項1乃至17のいずれかの項に記載の油圧式オートテンショナ。
Priority Applications (2)
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DE112011104386T DE112011104386T5 (de) | 2010-12-16 | 2011-12-09 | Hydraulische automatische Spannvorrichtung |
CN201180059335.5A CN103261740B (zh) | 2010-12-16 | 2011-12-09 | 液压式自动张紧器 |
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JP2010280271A JP5600579B2 (ja) | 2010-12-16 | 2010-12-16 | 油圧式オートテンショナ |
JP2010-280271 | 2010-12-16 | ||
JP2011001197A JP5689690B2 (ja) | 2011-01-06 | 2011-01-06 | 油圧式オートテンショナ |
JP2011-001197 | 2011-01-06 |
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PCT/JP2011/078534 WO2012081511A1 (ja) | 2010-12-16 | 2011-12-09 | 油圧式オートテンショナ |
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CN (1) | CN103261740B (ja) |
DE (1) | DE112011104386T5 (ja) |
WO (1) | WO2012081511A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109312831A (zh) * | 2016-05-13 | 2019-02-05 | Ntn株式会社 | 自动张紧器 |
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JP6182411B2 (ja) * | 2013-09-26 | 2017-08-16 | Ntn株式会社 | 油圧式オートテンショナ |
CN107719573B (zh) * | 2017-11-20 | 2023-05-05 | 珠海蓝图运动科技股份有限公司 | 自行车拨链器安装结构及自行车 |
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JP2004028180A (ja) * | 2002-06-25 | 2004-01-29 | Ntn Corp | 油圧式オートテンショナ |
JP2007002983A (ja) * | 2005-06-27 | 2007-01-11 | Ntn Corp | 油圧式オートテンショナ |
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JP2008190595A (ja) * | 2007-02-02 | 2008-08-21 | Honda Motor Co Ltd | ダンパ付きテンショナ装置 |
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JPH04251885A (ja) | 1991-01-29 | 1992-09-08 | Sharp Corp | 感光体梱包装置 |
JP3712477B2 (ja) * | 1996-10-21 | 2005-11-02 | Ntn株式会社 | オートテンショナ |
JPH1019099A (ja) * | 1997-03-25 | 1998-01-20 | Ntn Corp | 油圧式オートテンショナユニット |
JP4251885B2 (ja) * | 2003-02-18 | 2009-04-08 | Ntn株式会社 | 油圧式オートテンショナの組立方法 |
JP4540974B2 (ja) * | 2003-12-16 | 2010-09-08 | Ntn株式会社 | 補機駆動用ベルトの張力調整装置 |
DE102008016654B4 (de) * | 2008-04-01 | 2019-02-21 | Elringklinger Ag | Autark-Kettenspanner mit Doppeldichtring |
CN201627886U (zh) * | 2009-12-14 | 2010-11-10 | 纽尚(宁波)汽车轴承制造有限公司 | 一种液压式汽车张紧器 |
-
2011
- 2011-12-09 DE DE112011104386T patent/DE112011104386T5/de not_active Withdrawn
- 2011-12-09 WO PCT/JP2011/078534 patent/WO2012081511A1/ja active Application Filing
- 2011-12-09 CN CN201180059335.5A patent/CN103261740B/zh not_active Expired - Fee Related
Patent Citations (6)
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JPH03123141U (ja) * | 1990-03-28 | 1991-12-16 | ||
JP2004028180A (ja) * | 2002-06-25 | 2004-01-29 | Ntn Corp | 油圧式オートテンショナ |
JP2007002983A (ja) * | 2005-06-27 | 2007-01-11 | Ntn Corp | 油圧式オートテンショナ |
JP2007187272A (ja) * | 2006-01-13 | 2007-07-26 | Mitsubishi Fuso Truck & Bus Corp | エンジンのベルト張力自動調整装置 |
JP2008190595A (ja) * | 2007-02-02 | 2008-08-21 | Honda Motor Co Ltd | ダンパ付きテンショナ装置 |
JP2010090962A (ja) * | 2008-10-07 | 2010-04-22 | Ntn Corp | オートテンショナ |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN109312831A (zh) * | 2016-05-13 | 2019-02-05 | Ntn株式会社 | 自动张紧器 |
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CN103261740A (zh) | 2013-08-21 |
CN103261740B (zh) | 2016-03-16 |
DE112011104386T5 (de) | 2013-09-12 |
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