WO2005059404A1 - チェ−ンテンショナ - Google Patents
チェ−ンテンショナ Download PDFInfo
- Publication number
- WO2005059404A1 WO2005059404A1 PCT/JP2004/019026 JP2004019026W WO2005059404A1 WO 2005059404 A1 WO2005059404 A1 WO 2005059404A1 JP 2004019026 W JP2004019026 W JP 2004019026W WO 2005059404 A1 WO2005059404 A1 WO 2005059404A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plunger
- housing
- cylinder chamber
- chain tensioner
- pin
- Prior art date
Links
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- F16H2007/0853—Ratchets
-
- 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
- F16H2007/0853—Ratchets
- F16H2007/0855—Ratchets comprising a clip member engaging with the rack teeth
-
- 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 chain tensioner that keeps the tension of a chain such as a camshaft driving chain constant.
- a plunger slidable into a cylinder chamber formed in a housing and a housing, and a spring for pressing the plunger outward are inserted into the back of the plunger.
- an oil supply passage communicating with the formed pressure chamber is provided, and the force of the oil supply passage is configured to buffer the pushing force applied to the plunger by the hydraulic oil supplied into the pressure chamber.
- the chain tensioner described in Patent Document 1 is provided with a backward movement restricting means for restricting the backward movement of the plunger so that the plunger exceeds the required amount when the engine stops. I try to prevent it from being pushed. Also, Hauge A retaining mechanism is provided between the plunger and the plunger to prevent the plunger from also releasing the cylinder chamber force during maintenance around the engine valve train.
- Patent document 1 JP 2001-355691A
- a ring accommodating groove is provided on an inner periphery of an opening end of a cylinder chamber formed in a housing, and is mounted in the ring accommodating groove.
- the register ring is engaged with an engagement groove formed on the outer periphery of the plunger to restrict the retreat of the plunger, and the register ring is engaged with a safety groove formed on the outer periphery of the rear end of the plunger to thereby make the plunger. Since the register ring is used to both restrict the retraction of the plunger and prevent it from falling out, registering the chain tensioner after maintenance around the engine valve train is necessary. It is necessary to pinch the plunger in a state in which the operation unit provided in the device is pinched and the engagement with the safety groove is released by expanding the diameter of the register ring.
- An object of the present invention is to provide a chain tensioner that can completely prevent the plunger from falling off.
- the present invention incorporates a plunger slidable into a cylinder chamber formed in a housing and a spring for pressing the plunger outward.
- a retraction control means is provided between the housing and the plunger to prevent the plunger from retreating more than a predetermined amount toward the closed end of the cylinder chamber.
- the housing has a pressure formed on the back of the plunger.
- a chain tensioner that forms an oil supply passage communicating with the chamber and absorbs the pushing force applied to the plunger by the hydraulic oil supplied to the pressure chamber, an axial direction is formed around the outer periphery of the plunger.
- a guide recess extending long in the housing, and a stopper pin partially extending into the guide recess at an open end of the cylinder chamber in the housing. Adopt configuration with It was done.
- the stopper pin can adopt a mounting method in which the stopper pin is pressed into a pin hole formed in the housing.
- the pin hole may be formed so as to face in the radial direction of the cylinder chamber, or may be formed so as to cross the outer peripheral portion of the cylinder chamber.
- FIG. 1 is a front view showing a use state of a chain tensioner according to the present invention.
- FIG. 2 is a longitudinal sectional front view showing a first embodiment of a chain tensioner according to the present invention.
- FIG. 4 is an enlarged sectional view showing a part of FIG. 2
- FIG. 5 is a longitudinal sectional front view showing a second embodiment of the chain tensioner according to the present invention.
- Fig. 1 shows a chain transmission for driving a camshaft, in which a chain 5 extends between a sprocket 2 attached to the end of a crankshaft 1 and a sprocket 4 attached to the end of a camshaft 3.
- the chain guide 6 is in contact with the slack side of the chain 5.
- the chain guide 6 is swingable about a shaft 7, and the chain guide 6 is pressed against the chain 5 by the chain tensioner 10 according to the present invention.
- FIG. 2 to FIG. 4 show a first embodiment of a chain tensioner according to the present invention.
- a cylinder chamber 12 having a closed end is formed in a housing 11 attached to the engine block, and a plunger 13 is slidably incorporated in the cylinder chamber 12.
- the plunger 13 has a hollow chamber 14 opened at the rear end face, and a spring 15 installed between the closed end of the hollow chamber 14 and the closed end of the cylinder chamber 12 presses the plunger 13 outward. are doing.
- the housing 11 is provided with an oil supply passage 17 communicating with a pressure chamber 16 formed on the back of the plunger 13, and a check valve 18 is incorporated in the oil outlet side of the oil supply passage 17.
- a check valve 18 is incorporated in the oil outlet side of the oil supply passage 17.
- a retraction control mechanism 20 for preventing the plunger 13 from retreating more than a predetermined amount toward the closed end of the cylinder chamber 12.
- the retraction control mechanism 20 forms a ring accommodating groove 21 on the inner periphery of the opening of the cylinder chamber 12, and provides the register ring 22 in the J-ing accommodating groove 21.
- a plurality of circumferential grooves 23 which are elastically deformable in a radial direction are accommodated, and a plurality of circumferential grooves 23 which are fastened by the ring parts 22a are provided at equal intervals in an outer circumferential portion of the plunger 13.
- a tapered surface 23a having a smaller diameter toward the tip of the plunger 13 is provided on the inner periphery of the plunger 13, and an engagement surface 23b is provided at a smaller diameter end of the tapered surface 23a.
- the register ring 22 has a pair of operation pieces 22b facing the outside from a window 19 provided at an open end of the housing 11, and the pair of operation pieces The ring portion 22a expands in diameter by pinching the piece 22b.
- the taper surface 23 a allows the plunger 13 to move forward by the action of expanding the diameter of the ring portion 22 a of the register ring 22, and
- the backward movement of the plunger 13 is regulated by the engagement of the engagement surface 23b with the ring portion 22a of the register ring 22 which comes into contact with the wall surface 21a and stops.
- a retaining mechanism 30 is provided between the housing 11 and the plunger 13 to prevent the plunger 13 from falling off when the plunger 13 has moved the required stroke. I have.
- the retaining mechanism 30 forms a guide recess 31 extending in the axial direction on the outer periphery of the plunger 13, and a pin hole 32 radially facing the cylinder chamber 12 at the open end of the cylinder chamber 12 in the housing 11.
- a stopper pin 33 having a spring pin force is press-fitted into the pin hole 32 so that one end of the stopper pin 33 faces the guide recess 31, and the guide recess 31 contacts the end face 31 b of the plunger rear end side with respect to the stop pin 33.
- the plunger 13 is prevented from coming off by contact.
- the guide recess 31 is formed by a flat surface 31a extending long in the axial direction of the plunger 13 and a pair of end surfaces 31b rising from both ends of the flat surface 31a in the axial direction of the plunger. It may be.
- the stopper pin 33 when a spring pin is employed as the stopper pin 33, when the stopper pin 33 is press-fitted into the pin hole 32, the stopper pin 33 is elastically deformed and its diameter is reduced. For this reason, when the housing 11 is formed of an aluminum alloy, the inner diameter surface of the cylinder chamber 12 can be prevented from being deformed, and the gap between the inner peripheral surface of the cylinder chamber 12 and the outer peripheral surface of the plunger 13 is reduced. Since it is kept constant, it is possible to prevent the slidability of the plunger 13 from being reduced.
- the chain tensioner 10 shown in the first embodiment has the above-described structural force.
- the chain tensioner 10 has a housing 11 attached to an engine block and a plunger 13 provided with an outward projecting property by a spring 15. Is a thread for pressing the chain guide 6 shown in FIG.
- the ring portion 22a of the register ring 22 is pushed by the taper surface 23a of the circumferential groove 23 to expand its diameter, so that the forward movement of the plunger 13 is not hindered.
- the next circumferential groove 23 corresponds to the ring portion 22a of the register ring 22.
- the plunger 13 moves forward by the pressing of the spring 15, and the end surface 31b of the guide recess 31 on the rear end side of the plunger is moved.
- the abutment against the stop pin 33 prevents the plunger 13 from slipping out and prevents the plunger 13 from falling off.
- FIG. 5 and FIG. 6 show a second embodiment of the chain tensioner according to the present invention.
- a pin hole 34 that crosses the outer peripheral portion of the cylinder chamber 12 is formed at the opening end of the cylinder chamber 12 in the housing 11, and a stopper pin 35 having a spring pin force is pressed into the pin hole 34.
- a part of the guide recess 31 faces the guide recess 31, and the plunger 13 is prevented from coming off by the contact of the end face 31 b of the guide recess 31 on the rear end side of the guide recess 31 with the stopper pin 35.
- a pin hole 34 is formed in the housing 11 across the outer periphery of the cylinder chamber 12, and a stopper pin 35 having a spring pin force is press-fitted into the pin hole 34.
- the deformation of the inner diameter surface of the chamber 12 can be more effectively prevented.
Landscapes
- 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
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/581,681 US20080096707A1 (en) | 2003-12-18 | 2004-12-20 | Chain tensioner |
DE112004002490T DE112004002490T5 (de) | 2003-12-18 | 2004-12-20 | Kettenspanner |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003420844A JP2005180544A (ja) | 2003-12-18 | 2003-12-18 | チェーンテンショナ |
JP2003-420844 | 2003-12-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005059404A1 true WO2005059404A1 (ja) | 2005-06-30 |
Family
ID=34697262
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/019026 WO2005059404A1 (ja) | 2003-12-18 | 2004-12-20 | チェ−ンテンショナ |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080096707A1 (ja) |
JP (1) | JP2005180544A (ja) |
CN (1) | CN1886607A (ja) |
DE (1) | DE112004002490T5 (ja) |
WO (1) | WO2005059404A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008001587A1 (en) * | 2006-06-29 | 2008-01-03 | Borgwarner Morse Tec Japan K.K. | Tensioner |
CN103256357A (zh) * | 2012-02-20 | 2013-08-21 | 株式会社椿本链条 | 棘齿式张紧器 |
CN105952857A (zh) * | 2016-03-15 | 2016-09-21 | 浙江吉利罗佑发动机有限公司 | 一种可变刚度的张紧器结构 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5173290B2 (ja) * | 2007-07-09 | 2013-04-03 | Ntn株式会社 | チェーンテンショナ |
CN103423391B (zh) * | 2012-05-24 | 2016-01-20 | 合肥神马科技集团有限公司 | 皮带涨紧机构 |
DE102016207793A1 (de) * | 2016-05-04 | 2017-11-09 | Schaeffler Technologies AG & Co. KG | Hydraulische Spannvorrichtung für einen Kettentrieb |
DE102016207782A1 (de) * | 2016-05-04 | 2017-11-09 | Schaeffler Technologies AG & Co. KG | Hydraulische Spannvorrichtung für einen Kettentrieb |
CN108426009A (zh) * | 2018-05-23 | 2018-08-21 | 南京世界村汽车动力有限公司 | 一种汽车发动机链条涨紧器 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000291749A (ja) * | 1999-04-02 | 2000-10-20 | Ntn Corp | チェーンテンショナ |
JP2003194968A (ja) * | 2001-12-28 | 2003-07-09 | Seiko Instruments Inc | 回転式べゼル装置及びこれを用いた携帯時計 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6275254U (ja) * | 1985-10-29 | 1987-05-14 | ||
JP3187797B2 (ja) * | 1999-11-26 | 2001-07-11 | 株式会社椿本チエイン | プランジャ係止機構付テンショナ |
-
2003
- 2003-12-18 JP JP2003420844A patent/JP2005180544A/ja active Pending
-
2004
- 2004-12-20 CN CNA2004800346413A patent/CN1886607A/zh active Pending
- 2004-12-20 DE DE112004002490T patent/DE112004002490T5/de not_active Withdrawn
- 2004-12-20 WO PCT/JP2004/019026 patent/WO2005059404A1/ja active Application Filing
- 2004-12-20 US US10/581,681 patent/US20080096707A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000291749A (ja) * | 1999-04-02 | 2000-10-20 | Ntn Corp | チェーンテンショナ |
JP2003194968A (ja) * | 2001-12-28 | 2003-07-09 | Seiko Instruments Inc | 回転式べゼル装置及びこれを用いた携帯時計 |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008001587A1 (en) * | 2006-06-29 | 2008-01-03 | Borgwarner Morse Tec Japan K.K. | Tensioner |
JP2008008395A (ja) * | 2006-06-29 | 2008-01-17 | Borg Warner Morse Tec Japan Kk | テンショナ |
US8277347B2 (en) | 2006-06-29 | 2012-10-02 | Borgwarner Morse Tec Japan K.K. | Tensioner |
KR101330012B1 (ko) | 2006-06-29 | 2013-11-15 | 보그워너 모스 텍 저팬 가부시끼가이샤 | 장력조절장치 |
CN103256357A (zh) * | 2012-02-20 | 2013-08-21 | 株式会社椿本链条 | 棘齿式张紧器 |
CN105952857A (zh) * | 2016-03-15 | 2016-09-21 | 浙江吉利罗佑发动机有限公司 | 一种可变刚度的张紧器结构 |
CN105952857B (zh) * | 2016-03-15 | 2018-09-07 | 浙江吉利罗佑发动机有限公司 | 一种可变刚度的张紧器结构 |
Also Published As
Publication number | Publication date |
---|---|
DE112004002490T5 (de) | 2006-11-02 |
US20080096707A1 (en) | 2008-04-24 |
JP2005180544A (ja) | 2005-07-07 |
CN1886607A (zh) | 2006-12-27 |
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