WO2003038308A1 - Tendeur de chaine a cames - Google Patents
Tendeur de chaine a cames Download PDFInfo
- Publication number
- WO2003038308A1 WO2003038308A1 PCT/JP2002/009422 JP0209422W WO03038308A1 WO 2003038308 A1 WO2003038308 A1 WO 2003038308A1 JP 0209422 W JP0209422 W JP 0209422W WO 03038308 A1 WO03038308 A1 WO 03038308A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- arm
- chain
- tensioner
- shoe
- resin shoe
- 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
-
- 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
- F16H2007/0804—Leaf 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
- F16H2007/0863—Finally actuated members, e.g. constructional details thereof
- F16H2007/0872—Sliding members
-
- 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
- F16H7/18—Means for guiding or supporting belts, ropes, or chains
- F16H2007/185—Means for guiding or supporting belts, ropes, or chains the guiding surface in contact with the belt, rope or chain having particular shapes, structures or materials
Definitions
- the present invention relates to a cam chain for a valve train of an OHC type internal combustion engine such as a vehicle.
- FIG. 11 is an exploded perspective view of a conventional cam chain tensioner 001 disclosed in Japanese Laid-Open Utility Model Publication No. 5-4-2798.
- This cam chain tensioner includes a metal arm 002, a resin shoe 003 mounted on the front surface thereof, and a resin pad 004 mounted on a lower portion near the center of the arm.
- FIG. 12 is a cross-sectional view at the position of the pad 004 in an assembled state.
- the arm 002 is formed from a metal such as aluminum, and has a base end 002a provided with a mounting hole 002b through which a mounting port is passed.
- the chain sliding side of the shoe 003 attached to the arm 002 has a concave groove 003a substantially corresponding to the width of the chain, and the cam chain slides on the groove bottom.
- Short sides 003b are formed on both sides of the concave groove 003a to prevent the chain from coming off.
- Both sides of the proximal end 003c of the shoe 003 are extended to the proximal end 002a of the arm 002, and this extension is provided with a hole 003d for fastening together with the arm 002 by the mounting port.
- the distal end of the shoe 003 is formed with a U-shaped hook 003 e for engaging with the distal end of the arm 002.
- a projection 003f is formed at the center of the shoe to prevent the shoe from shifting with respect to the arm, and this projection 003 # is fitted into the recess 002c of the arm.
- the pad 004 is fitted on the opposite side of the center of the arm 002 from the side where the chain slides.
- the pad 004 functions as a shock-absorbing cushioning material when the protruding portion of the tensioner lifter abuts.
- the pad 004 of the cushioning material in the tensioner lifter abutment part in the above example is of a fitting type, but a backrest rubber member is baked on the tensioner riff abutment part of the arm. There are many examples.
- the pad 004 was fitted on the back of the arm 002 as a cushioning material between the arm 002 and the projection of the tensioner lifter, and the rubber for the back was baked. Required extra parts, working time, and labor.
- An object of the present invention is to provide a cam chain tensioner which provides a means for replacing a conventional cam chain tensioner member or work, and which can reduce the number of parts, reduce the number of work steps during manufacturing, and shorten the work process. And Disclosure of the invention
- the present invention provides an arm having a mounting portion at a base end, and a resin shoe attached to the arm along the arm so as to slide on the chain at the side of the chain.
- a U-shaped hook portion is formed at the tip of the resin shoe to engage with the tip of the arm, and one side of the base end of the resin shoe is extended to the mounting portion of the arm.
- a base end is formed, a hole is provided in the base end for use in co-fastening with the arm mounting part, and near the center of the resin shroud, the arm extends around the side of the arm.
- a cam chain tensioner wherein a tensioner lift contact portion extending in a U-shaped cross section to the rear surface of the arm is formed.
- cam chain tensioner of the present invention is configured as described above, only one side of the base end of the resin shroud is extended to the mounting portion of the arm in order to fasten it together with the arm, and a hole is formed there. Since it is provided, the work of the shoe is easy and the mounting work is also easy. In addition, a part near the center of the shoe is turned around the side edge of the arm and extended to the back of the arm in a U-shaped cross section to act as a cushioning material, reducing the number of parts and mounting the cushioning material Becomes easier.
- the U-shaped hook and the tensioner lift contact part are formed integrally with the resin shoe Is done.
- the U-shaped hook portion also has a U-shaped cross section, and a positioning projection for determining a relative position in the lateral direction with respect to the arm is formed on an inner side surface thereof.
- the tensioner riff abutment portion is formed on the inner side surface thereof with a positioning projection for determining a relative position in the lateral direction with respect to the arm.
- a lateral positioning locking portion for determining a relative position with respect to the arm can be formed near the center of the resin shoe.
- FIG. 1 is a front view showing a part of a motorcycle HC internal combustion engine provided with a chain tensioner according to an embodiment of the present invention, cut at a cam chain position.
- FIG. 2A is a plan view of the arm of the cam chain tensioner.
- FIG. 2B is a side view of the arm of the cam chain tensioner.
- FIG. 3 is a side view of the cam chain tensioner show.
- FIG. 4 is an enlarged view taken along the arrow IV in FIG.
- FIG. 5 is an enlarged view of FIG.
- FIG. 6 is an enlarged cross-sectional view taken along the line VI-VI of FIG.
- FIG. 7 is an enlarged cross-sectional view taken along the line VII-VII of FIG.
- FIG. 8 is an enlarged cross-sectional view taken along the line VIII-VIII of FIG.
- FIG. 9 is an enlarged cross-sectional view taken along line IX-IX of FIG.
- FIG. 10 is a side view of the base end in a state where the arm and the shoe are combined.
- FIG. 11 is an exploded perspective view of a conventional chain tensioner.
- FIG. 12 is a cross-sectional view of the conventional chain tensioner at a pad position.
- FIG. 1 is a front view showing a part of an OHC type internal combustion engine provided with a chain tensioner according to an embodiment of the present invention, cut at a position of a cam chain.
- This internal combustion engine 1 Crankcase 2, cylinder block 3, and cylinder head 4 are assembled in this order.
- a chain chamber 5 is provided through the crankcase 2, the cylinder block 3, and the cylinder head 4.
- there is no cylinder head cover because the cylinder head is split vertically.
- crankshaft 6 protrudes into the chain chamber 5, and a drive sprocket 7 is attached to this protruding portion.
- a camshaft 8 supported in the cylinder head 4 of the chain chamber 5 protrudes into the chain chamber 5, and a driven sprocket 9 is attached to this protruding portion.
- a cam chain 10 is wound around the drive sprocket 7 and the driven sprocket 9, and the driven sprocket 9 is rotated in the direction of the arrow through the cam chain 10 by the rotation of the drive sprocket 7, so that the cam sprocket 8
- a cam chain guide 11 made of resin for guiding the cam chain 10 is provided on the side of the cam chain 10 that rotates the cam (not shown).
- One end of the cam chain guide 11 is slightly bent at a bending point 11 a and is supported by a support recess 2 a provided in the crankcase 2 of the chain chamber 5.
- the other end l ib of the cam chain guide 11 is a free end.
- a positioning fixing portion 11c is provided near the free end, and the drum chain guide 11 is supported by the cylinder block 3 via a pin lid.
- the chain sliding portion of the cam chain guide 11 has a substantially linear shape, and its cross section is a concave groove corresponding to a width of the chain, and the chain slides on the groove bottom. Short sides are formed on both sides of the groove to prevent the chain from coming off.
- the cam chain tensioner 12 which is a feature of the present invention, is attached to the cam chain 10 from the outside by the tensioner lifter 16. It is being pressed.
- the tensioner lifter 16 is a hydraulic device attached to the cylinder block 3 from outside by a port 17 so as to be located in the chain chamber 5.
- the tensioner lifter 16 has a protrusion 16 a projecting toward the inside of the chain chamber by hydraulic pressure. Have You.
- the cam chain tensioner 12 includes an arm 13 made of a highly resilient steel-based metal, and a resin shoe 14 attached to the chain sliding side of the arm. At one end of the cam chain tensioner 12 on the drive sprocket 7 side, the arm 13 and an extension on one side of the shoe 14 are jointly fastened to the crankcase 2 by a port 15.
- FIG. 2A is a plan view of an arm 13 which is a member of the cam chain tensioner 12, and FIG. 2B is a side view of the arm 13.
- the arm 13 is formed by bending a thin steel-based material having high elasticity such as spring steel, and is bent slightly at a bending point 13 b near the base end 13 a.
- An annular portion 13c through which the port 15 is inserted is formed in a.
- FIG. 3 is a side view of a shroud 14 which is another member constituting the cam chain tensioner 12, and FIGS. 4 and 5 are enlarged views taken along arrows IV and V in FIG. 3, respectively.
- FIGS. 7, 8, and 9 are an enlarged cross-sectional view taken along the line VI-VI, an enlarged cross-sectional view VII-VII, an enlarged cross-sectional view VIII-VIII, and an enlarged IX-IX section of FIG. 3, respectively.
- the shoe 14 is integrally formed of a hard rubber-based synthetic resin, and has an overall shape along the arm 13. As is clear from FIGS.
- a concave groove 14a substantially corresponding to the width of the chain is formed on the chain sliding side of the chain 14, and the cam chain 10 has a concave groove 14a.
- Slides on the bottom of the Short side wall portions 14b are formed on both sides of the concave groove 14a to prevent the chain from coming off.
- At the base end of the shoe 14, only one side 14c is extended to a position along the annular portion 13a of the arm 13, as is apparent from the cross section of FIG. This extension is provided with a hole 14 d that is fastened together with the arm 13 by the port 15. As shown in the cross-sectional view of FIG.
- a lateral positioning locking portion e abutting on the side surface of the arm 13 is integrally protruded toward the arm 13 near the base end of the center of the shoe 14.
- the arm 13 passes through the side edge of the arm 13 opposite to the positioning and locking portion e, and the side opposite to the chain sliding side.
- a U-shaped arm 14 f is formed to the abutment position of the tensioner lifter 16 at The contact portion 14 g is in contact with the portion 16 a.
- a positioning protrusion 14h is formed inside the U-shaped arm 14f.
- a folded U-shaped hook portion 14 i that engages with the tip of the arm 13 is formed at the tip end of the shoe 14.
- a side plate portion 14j is provided so as to protrude from the body, so that the tip of the shoe 14 is also U-shaped in the cross section shown in FIG.
- a positioning protrusion 14k is formed inside the side plate portion 14j.
- FIG. 10 is a side view of the base end in a state where the arm 13 and the shoe 14 are combined.
- the tip of the arm 13 is slid laterally inside the U-shaped arm portion 14f of the shoe 14. Further, when the tip of the arm 13 is pushed into the hook portion 14 i, the abdominal surface of the arm 13 contacts the back surface of the shoe 14, and the mutual lateral position of the arm 13 and the shoe 14 becomes the positioning locking portion 14 e. , The positioning protrusion 14 h and the positioning protrusion 14 k.
- the side surface of the annular portion 13c of the arm 13 abuts against the inner surface of the base end portion 14c on one side of the shoe 14, and the annular portion 13c of the arm and the base end portion 14c of the shoe 14
- the holes 13d of the arm 13 and the holes 13d are aligned as shown in FIG. 10, and the arm 13 and the shoe 14 are fastened together through the port 15 here.
- the arm 13 is manufactured by bending a narrow material of a sheet metal, the processing is easy and the processing time is shortened.
- the shoe 14 is laterally positioned by a plurality of positioning portions 14e, 14h, and 14k, and uses an adhesive or the like by means of a U-shaped hook portion 14i at the tip and a hole d at the base end. Since the arm 13 is supported by the arm 13, the number of assembling steps can be reduced. Since the base end 14c of the shoe 14 is extended on one side only, it is easier to process and assemble than a case where both sides are extended. Also, since the tensioner lifter abutting portion 14g acting as a cushioning material is integrated with the shoe 14, the number of parts is reduced, and the production and installation of a separate cushioning member, and extra work such as baking of the cushioning material are performed. Unnecessary man-hours
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02760831A EP1441149B8 (en) | 2001-10-31 | 2002-09-13 | Cam chain tensioner |
KR1020037007391A KR100639414B1 (ko) | 2001-10-31 | 2002-09-13 | 캠 체인 텐셔너 |
BRPI0206240-2A BR0206240B1 (pt) | 2001-10-31 | 2002-09-13 | dispositivo de tensionamento de corrente de distribuição. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001-333829 | 2001-10-31 | ||
JP2001333829A JP3532179B2 (ja) | 2001-10-31 | 2001-10-31 | カムチェーンテンショナ |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003038308A1 true WO2003038308A1 (fr) | 2003-05-08 |
Family
ID=19149042
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/009422 WO2003038308A1 (fr) | 2001-10-31 | 2002-09-13 | Tendeur de chaine a cames |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP1441149B8 (ja) |
JP (1) | JP3532179B2 (ja) |
KR (1) | KR100639414B1 (ja) |
CN (1) | CN1301376C (ja) |
AR (1) | AR037162A1 (ja) |
BR (1) | BR0206240B1 (ja) |
ES (1) | ES2261718T3 (ja) |
MY (1) | MY134239A (ja) |
WO (1) | WO2003038308A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI490404B (zh) * | 2011-05-20 | 2015-07-01 | Yamaha Motor Co Ltd | Engine, straddle type vehicle, and engine assembly method |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006250208A (ja) | 2005-03-09 | 2006-09-21 | Tsubakimoto Chain Co | 伝動装置用ガイド |
JP4873971B2 (ja) * | 2006-03-27 | 2012-02-08 | ボルグワーナー・モールステック・ジャパン株式会社 | チェーンテンショナアームおよびチェーンガイド |
JP2009103186A (ja) * | 2007-10-22 | 2009-05-14 | Tsubakimoto Chain Co | 伝動装置用ガイド |
JP5424446B2 (ja) * | 2008-06-26 | 2014-02-26 | ボーグワーナー インコーポレーテッド | テンショニング装置 |
US7972232B2 (en) * | 2008-07-24 | 2011-07-05 | GM Global Technology Operations LLC | Chain drive tensioner system with translating pivot point |
CN101684854B (zh) * | 2008-09-25 | 2012-10-10 | 本田技研工业株式会社 | 内燃机的凸轮链张紧枢轴安装结构 |
CN102011621B (zh) * | 2010-11-29 | 2012-11-14 | 重庆建设摩托车股份有限公司 | 一种摩托车发动机正时传动机构 |
JP5611145B2 (ja) * | 2011-08-02 | 2014-10-22 | 株式会社椿本チエイン | 伝動装置用ガイド |
JP5634356B2 (ja) * | 2011-08-31 | 2014-12-03 | 株式会社椿本チエイン | 伝動装置用ガイド |
JP5800191B2 (ja) * | 2011-10-06 | 2015-10-28 | Nok株式会社 | テンショナ |
DE102013201334A1 (de) * | 2013-01-29 | 2014-07-31 | Schaeffler Technologies Gmbh & Co. Kg | Spannschiene mit einem Tragkörper aus einer AlSi-Legierung |
JP5984266B2 (ja) * | 2013-07-29 | 2016-09-06 | 株式会社椿本チエイン | チェーンガイド |
JP5959482B2 (ja) * | 2013-08-07 | 2016-08-02 | 株式会社椿本チエイン | チェーンガイドおよびベース部材 |
JP5990155B2 (ja) * | 2013-11-18 | 2016-09-07 | 株式会社椿本チエイン | チェーンガイド |
ES2702283T3 (es) | 2014-08-01 | 2019-02-28 | Piaggio & C Spa | Barra tensora de cadena |
US9850989B2 (en) | 2014-10-22 | 2017-12-26 | Schaeffler Technologies AG & Co. KG | Compliant tensioner arm |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0542798U (ja) * | 1991-11-07 | 1993-06-11 | 株式会社椿本チエイン | チエーンガイドのアームとシユーの一体化構造 |
GB2351136A (en) * | 1999-06-15 | 2000-12-20 | Tsubakimoto Chain Co | Tensioner lever |
JP2001311457A (ja) * | 2000-04-28 | 2001-11-09 | Ntn Corp | チェーンガイド |
GB2371613A (en) * | 2000-12-15 | 2002-07-31 | Tsubakimoto Chain Co | Reinforced plastic chain guide |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0736201Y2 (ja) * | 1989-05-31 | 1995-08-16 | 株式会社椿本チエイン | 合成樹脂製シューを具えたチェーンガイドレール |
US4921472A (en) * | 1989-06-12 | 1990-05-01 | Borg-Warner Automotive Transmission & Engine Components Corporation | Chain tensioner |
JP2519476Y2 (ja) * | 1991-04-11 | 1996-12-04 | 株式会社椿本チエイン | テンショナレバーのシューの浮上り防止構造 |
JPH08145131A (ja) * | 1994-11-22 | 1996-06-04 | Hokushin Ind Inc | チェーン支持体 |
JP3805449B2 (ja) * | 1996-12-19 | 2006-08-02 | 株式会社椿本チエイン | ローラチェーン用走行案内シュー |
IT1290499B1 (it) * | 1997-03-28 | 1998-12-04 | Borg Warner Automotive | Tenditore per catene,con pattino in materia plastica e molla/e a lamina ad estremita' ricurve |
-
2001
- 2001-10-31 JP JP2001333829A patent/JP3532179B2/ja not_active Expired - Fee Related
-
2002
- 2002-09-13 KR KR1020037007391A patent/KR100639414B1/ko not_active IP Right Cessation
- 2002-09-13 EP EP02760831A patent/EP1441149B8/en not_active Expired - Fee Related
- 2002-09-13 WO PCT/JP2002/009422 patent/WO2003038308A1/ja active IP Right Grant
- 2002-09-13 ES ES02760831T patent/ES2261718T3/es not_active Expired - Lifetime
- 2002-09-13 BR BRPI0206240-2A patent/BR0206240B1/pt active IP Right Grant
- 2002-10-29 MY MYPI20024056A patent/MY134239A/en unknown
- 2002-10-30 AR ARP020104132A patent/AR037162A1/es active IP Right Grant
- 2002-10-31 CN CNB021459924A patent/CN1301376C/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0542798U (ja) * | 1991-11-07 | 1993-06-11 | 株式会社椿本チエイン | チエーンガイドのアームとシユーの一体化構造 |
GB2351136A (en) * | 1999-06-15 | 2000-12-20 | Tsubakimoto Chain Co | Tensioner lever |
JP2001311457A (ja) * | 2000-04-28 | 2001-11-09 | Ntn Corp | チェーンガイド |
GB2371613A (en) * | 2000-12-15 | 2002-07-31 | Tsubakimoto Chain Co | Reinforced plastic chain guide |
Non-Patent Citations (1)
Title |
---|
See also references of EP1441149A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI490404B (zh) * | 2011-05-20 | 2015-07-01 | Yamaha Motor Co Ltd | Engine, straddle type vehicle, and engine assembly method |
Also Published As
Publication number | Publication date |
---|---|
EP1441149B8 (en) | 2006-06-14 |
BR0206240B1 (pt) | 2011-02-08 |
KR20040044390A (ko) | 2004-05-28 |
EP1441149A4 (en) | 2004-12-01 |
AR037162A1 (es) | 2004-10-27 |
CN1417500A (zh) | 2003-05-14 |
KR100639414B1 (ko) | 2006-10-26 |
BR0206240A (pt) | 2003-12-30 |
JP2003139205A (ja) | 2003-05-14 |
EP1441149A1 (en) | 2004-07-28 |
ES2261718T3 (es) | 2006-11-16 |
EP1441149B1 (en) | 2006-03-29 |
JP3532179B2 (ja) | 2004-05-31 |
MY134239A (en) | 2007-11-30 |
CN1301376C (zh) | 2007-02-21 |
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