JP5370924B2 - Chain tensioner - Google Patents

Chain tensioner Download PDF

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JP5370924B2
JP5370924B2 JP2009248778A JP2009248778A JP5370924B2 JP 5370924 B2 JP5370924 B2 JP 5370924B2 JP 2009248778 A JP2009248778 A JP 2009248778A JP 2009248778 A JP2009248778 A JP 2009248778A JP 5370924 B2 JP5370924 B2 JP 5370924B2
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chain
sliding surface
tensioner
chain tensioner
main body
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JP2011094693A (en
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直矢 今関
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Nok Corp
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Nok Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a chain tensioner excellent in response performance. <P>SOLUTION: This chain tensioner includes: a body part made of a rubber-like elastic material and including a belt-like sliding surface part for sliding a chain and sidewall parts respectively provided on both sides of the sliding surface part in the cross direction to prevent the chain from being removed from the sliding surface part; a belt-like metal reinforcing plate embedded in the body; a fitting part provided on one end side of the body to hold on a housing side swingably; and a receiving part provided on a back surface side of the sliding surface part at a position separated from the fitting part so that a push rod of a tensioner lifter for pushing the sliding surface part to the chain side abuts thereon. A plate material made of a hard material is integrally provided in a region, on which the push rod abuts, of the receiving part. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

本発明は、チェーンテンショナに関する。
また、本発明は、動力伝達手段として使用されるチェーンの張りを緊張させるためのチェーンテンショナに関するものである。 The present invention relates to a chain tensioner.
The present invention also relates to a chain tensioner for tensioning a chain used as power transmission means.

更にまた、本発明は、内燃機関のカムチェーン用のテンショナとして好適に用いられるチェーンテンショナに関する。   Furthermore, the present invention relates to a chain tensioner suitably used as a tensioner for a cam chain of an internal combustion engine.

従来、チェーンの巻き掛け伝動手段を使用した機械装置においては、チェーンの張りが弛緩して動力伝達効率が低下するのを防止する為に、チェーンの張りを緊張させるためのチェーンテンショナが併設されている。   Conventionally, in a mechanical device using a chain winding transmission means, a chain tensioner for tensioning the chain tension has been added in order to prevent the chain tension from loosening and lowering the power transmission efficiency. Yes.

具体的には、図３に示す形で使用されている。
すなわち図３は、内燃機関のカムチェーン室を通る縦断面図であり、図の左方が前方である。
クランク軸１０およびドライブスプロケット１１は図の矢印の方向へ回転する。
カムチェーン２０を介して駆動されるドリブンスプロケット３１およびカムシャフト３０は矢印の方向へ回転させられる。
ドライブスプロケット１１によって引っ張られる側のカムチェーン２０に沿って、このカムチェーン２０を案内するチェーンガイド４０が設けてあり、カムチェーン室を構成しているハウジング５０側に固定されている。
チェーンガイド４０のカムチェーン２０と摺動する側の断面は、略カムチェーン２０の幅に相当する凹溝となっており、カムチェーン２０はその溝底を摺動する。 Specifically, it is used in the form shown in FIG.
That is, FIG. 3 is a longitudinal sectional view passing through the cam chain chamber of the internal combustion engine, and the left side of the figure is the front.
The crankshaft 10 and the drive sprocket 11 rotate in the direction of the arrow in the figure.
The driven sprocket 31 and the camshaft 30 driven via the cam chain 20 are rotated in the direction of the arrow.
A chain guide 40 for guiding the cam chain 20 is provided along the cam chain 20 on the side pulled by the drive sprocket 11, and is fixed to the housing 50 side constituting the cam chain chamber.
The cross section of the side of the chain guide 40 that slides with the cam chain 20 is a concave groove substantially corresponding to the width of the cam chain 20, and the cam chain 20 slides on the groove bottom.

一方、ドライブスプロケット１１によって押し出される側のカムチェーン２０に沿って、カムチェーンテンショナ９０が設けてある。
このチェーンテンショナ９０は、その下端部の取付部４００を中心として揺動可能に支持されている。
ハウジング５０を貫通してテンショナリフタ７０が設けられ、チェーン室内部に突出したプッシュロッド７１の先端でカムチェーンテンショナ２０に設けた受部８００を押し、押されたチェーンテンショナ９０がカムチェーン２０を押して、カムチェーン２０の弛みが防止されている。 On the other hand, a cam chain tensioner 90 is provided along the cam chain 20 on the side pushed by the drive sprocket 11.
The chain tensioner 90 is supported so as to be swingable around a mounting portion 400 at the lower end thereof.
A tensioner lifter 70 is provided through the housing 50, and the receiving portion 800 provided on the cam chain tensioner 20 is pushed by the tip of the push rod 71 protruding into the chain chamber, and the pushed chain tensioner 90 pushes the cam chain 20. The slack of the cam chain 20 is prevented.

図４及び図６に示す様に、チェーンテンショナ９０は、チェーン２０を摺動させる帯状の摺動面部１００とチェーン２０が摺動面部１００から外れる事が無いように摺動面部１００の幅方向両側に設けられた側壁部２００とを備えたゴム状弾性材製の本体部６００内に、弾力性に富んだスチール系金属で作られた補強板３００が埋設されている。
チェーンテンショナ９０の摺動面部１００は、カムチェーン２０の撓みの形に湾曲
成型され、そのチェーンテンショナ９０の摺動部１００側の断面は、ほぼカムチェーン２０の幅に相当する凹溝となっており、カムチェーン２０はその溝底を摺動する。
すなわち、カムチェーン２０が摺動面部１００から外れる事が無いように摺動面部１００の幅方向両側に側壁部２００を設ける構成としている。 As shown in FIGS. 4 and 6, the chain tensioner 90 includes a belt-like sliding surface portion 100 that slides the chain 20 and both sides of the sliding surface portion 100 in the width direction so that the chain 20 does not come off the sliding surface portion 100. A reinforcing plate 300 made of a steel-based metal having high elasticity is embedded in a main body portion 600 made of a rubber-like elastic material provided with a side wall portion 200 provided on the inside.
The sliding surface portion 100 of the chain tensioner 90 is curved and molded into the shape of the bending of the cam chain 20, and the cross section on the sliding portion 100 side of the chain tensioner 90 is a concave groove substantially corresponding to the width of the cam chain 20. The cam chain 20 slides along the bottom of the groove.
That is, the side wall portions 200 are provided on both sides of the sliding surface portion 100 in the width direction so that the cam chain 20 does not come off the sliding surface portion 100.

しかし、プッシュロッド７１の先端で押圧する、チェーンテンショナ９０に設けた受部８００は、本体部６００と同一材質のゴム状弾性材製である為、プッシュロッド７１の先端部が受部８００内に食い込む問題を招来した。
この結果、チェーンテンショナ９０の応答性能（レスポンス）が悪くなる問題を惹起した。 However, since the receiving portion 800 provided on the chain tensioner 90 that is pressed by the tip of the push rod 71 is made of a rubber-like elastic material made of the same material as the main body portion 600, the tip of the push rod 71 is placed in the receiving portion 800. Invited a problem to bite.
As a result, a problem that the response performance (response) of the chain tensioner 90 is deteriorated is caused.

特開２００４−１２４９９８号公報JP 2004-124998 A

本発明は、上述した問題点に鑑みてなされたものであり、応答性能（レスポンス）が良好なチェーンテンショナを提供することを目的とする。   The present invention has been made in view of the above-described problems, and an object thereof is to provide a chain tensioner with good response performance (response).

本発明のチェーンテンショナは、チェーンを摺動させる帯状の摺動面部と前記チェーンが前記摺動面部から外れる事が無いように前記摺動面部の幅方向両側に設けられた側壁部とを備えたゴム状弾性材製の本体部と、前記本体部内に埋設された帯状の金属補強板と、前記本体部の一端側に設けた、ハウジング側に揺動自在に保持する為の取付部と、前記取付部から離れた位置であって、前記摺動面部の裏面側に、前記摺動面部を前記チェーン側に押付けるテンショナリフタのプッシュロッドが当接する受部が設けられているチェーンテンショナにおいて、前記受部が前記本体部と一体に成形されたゴム状弾性材製であって、前記受部の前記プッシュロッドが当接する領域に、硬質材製の板材が一体的に設けられ、前記板材が、断面略コ字形状を呈しており、前記受部の両側面を拘束する形で配置されていることを特徴とする。 The chain tensioner of the present invention includes a belt-like sliding surface portion for sliding the chain and side wall portions provided on both sides in the width direction of the sliding surface portion so that the chain does not come off from the sliding surface portion. A main body portion made of rubber-like elastic material, a band-shaped metal reinforcing plate embedded in the main body portion, an attachment portion provided on one end side of the main body portion for swingably holding on the housing side, and a position away from the mounting portion, on the back side of the sliding surface, the chain tensioner push rod tensioner lifter for pressing the sliding surface on the side of the chain is in contact with receiving portions are provided, the The receiving portion is made of a rubber-like elastic material formed integrally with the main body portion, and a hard plate material is integrally provided in a region where the push rod of the receiving portion abuts, and the plate material is Sectional U shape Exhibited and, characterized in that it is arranged in a manner to restrain both sides of the receiving part.

本発明は、以下に記載されるような効果を奏する。
請求項１記載の発明のチェーンテンショナによれば、応答性能（レスポンス）が良好なチェーンテンショナを提供出来ると共に、受部の変形を効果的に阻止出来るため、より応答性能（レスポンス）が良好なチェーンテンショナを提供出来る。
請求項２記載の発明のチェーンテンショナによれば、プッシュロッドの先端部が受部内に食い込むことを確実に阻止出来る。 The present invention has the following effects.
According to the chain tensioner of the first aspect of the present invention, it is possible to provide a chain tensioner with good response performance (response) and to effectively prevent deformation of the receiving portion, so that the chain with better response performance (response) can be provided. Tensioner can be provided.
According to the chain tensioner of the second aspect of the present invention, it is possible to reliably prevent the distal end portion of the push rod from biting into the receiving portion.

請求項３記載の発明のテンショナによれば、別体に製作した板材をカシメ固定することにより製作出来るため、安価に製造することが出来る。 According to the tensioner of the invention described in claim 3, since the plate material manufactured separately can be manufactured by caulking and fixing, it can be manufactured at low cost.

請求項４記載の発明のチェーンテンショナによれば、内燃機関のカムチェーンに用いて特に有効である。
According to the chain tensioner of the invention described in claim 4, it is particularly effective when used for a cam chain of an internal combustion engine.

本発明に係るチェーンテンショナの側面である。It is a side surface of the chain tensioner which concerns on this invention. 図１のチェーンテンショナのＡ−Ａ断面図である。It is AA sectional drawing of the chain tensioner of FIG. チェーンテンショナが適用される、内燃機関のカムチェーン室を通る要部縦断面図である。It is a principal part longitudinal cross-sectional view which passes along the cam chain chamber of an internal combustion engine to which a chain tensioner is applied. 従来技術に係るチェーンテンショナの側面図である。It is a side view of the chain tensioner which concerns on a prior art. 図４のチェーンテンショナのＢ−Ｂ断面図である。It is BB sectional drawing of the chain tensioner of FIG.

以下、本発明を実施するための最良の態様について、図に基づき説明する。
図１及び図２において、本発明に係る態様のチェーンテンショナは、チェーン２０を摺動させる帯状の摺動面部１とチェーン２０が摺動面部１から外れる事が無いように摺動面部１の幅方向両側に設けられた側壁部２とを備えたゴム状弾性材製の本体部６と、この本体部６内に埋設された帯状の金属補強板３と、本体部６の一端側に設けた、ハウジング側に揺動自在に保持する為の取付部４と、この取付部４から離れた位置であって、摺動面部１の裏面側に、摺動面部１をチェーン２０側に押付けるテンショナリフタ７０のプッシュロッド７１が当接する受部８が設けられる構成となっている。
そして、この受部８のプッシュロッド７１が当接する領域に、硬質材製の板材８１を配置する態様としている。 Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.
1 and 2, the chain tensioner according to the embodiment of the present invention has a belt-like sliding surface portion 1 for sliding the chain 20 and the width of the sliding surface portion 1 so that the chain 20 does not come off the sliding surface portion 1. A rubber-like elastic material main body 6 provided with side wall portions 2 provided on both sides in the direction, a band-shaped metal reinforcing plate 3 embedded in the main body 6, and one end of the main body 6. , And a tensioner that presses the sliding surface portion 1 against the chain 20 on the back surface side of the sliding surface portion 1 at a position away from the mounting portion 4. The receiving part 8 with which the push rod 71 of the lifter 70 abuts is provided.
And it is set as the aspect which arrange | positions the board | plate material 81 made from a hard material in the area | region where the push rod 71 of this receiving part 8 contact | abuts.

この板材８１は、金属材製や樹脂材製のものが適宜選択して用いられるが、耐熱性や変形が少ないことから、金属材製が好ましい。
そして、この板材８１は、断面略コ字形状を呈しており、受部８の両側面８２、８２の一部を拘束する形で配置されている。
このことにより、受部８が両側面８２、８２側に膨らむ変形を効果的に阻止出来る為、チェーンテンショナ９の良好な応答性能（レスポンス）が期待出来る。
この板材８１は、本体部６と一体成形しても良いが、本体部６と別体に製作した板材をカシメ固定することにより製作することにより、安価に製造することが出来る。 As the plate member 81, a metal member or a resin member is appropriately selected and used. However, since the heat resistance and deformation are small, a metal member is preferable.
And this board | plate material 81 is exhibiting the cross-sectional substantially U shape, and is arrange | positioned in the form which restrains a part of both side surfaces 82 and 82 of the receiving part 8. FIG.
Thereby, since the deformation | transformation which the receiving part 8 swells to the both sides | surfaces 82 and 82 side can be prevented effectively, the favorable response performance (response) of the chain tensioner 9 can be anticipated.
The plate material 81 may be integrally formed with the main body portion 6, but can be manufactured at low cost by being manufactured by caulking and fixing a plate material manufactured separately from the main body portion 6.

本体部６を構成しているゴム状弾性材は、各種のゴム材が適宜選択して用いられるが、内燃機関内で使用される環境では、耐熱性のゴム材であると共にエンジンオイルに対する耐油性も備えたゴム材が選択されるが、ニトリルゴム、アクリルゴムが好適に用いられる。   As the rubber-like elastic material constituting the main body 6, various rubber materials are appropriately selected and used. However, in an environment used in an internal combustion engine, the rubber-like elastic material is a heat-resistant rubber material and oil-resistant to engine oil. However, nitrile rubber and acrylic rubber are preferably used.

また、帯状の金属補強板３の材質は、各種の金属材が使用可能であるが、特にＳＫ５材、ＳＷＲＨ材が好適に用いられる。
また、この種チェーンテンショナ９は、図３に示す内燃機関のカムチェーン用に、好適に使用される。 In addition, various metal materials can be used as the material of the band-shaped metal reinforcing plate 3, but SK5 material and SWRH material are particularly preferably used.
Further, this type of chain tensioner 9 is preferably used for the cam chain of the internal combustion engine shown in FIG.

また、本発明は上述の発明を実施するための最良の形態に限らず本発明の要旨を逸脱することなくその他種々の構成を採り得ることはもちろんである。   Further, the present invention is not limited to the best mode for carrying out the invention described above, and various other configurations can be adopted without departing from the gist of the present invention.

１ 摺動面部
２ 側壁部
３ 金属補強板
４ 取付部
６ 本体部
８ 受部
９ チェーンテンショナ
８１ 板材 DESCRIPTION OF SYMBOLS 1 Sliding surface part 2 Side wall part 3 Metal reinforcement board 4 Attaching part 6 Main part 8 Receiving part 9 Chain tensioner 81 Plate material

Claims (4)

チェーン（２０）を摺動させる帯状の摺動面部（１）と前記チェーン（２０）が前記摺動面部（１）から外れる事が無いように前記摺動面部（１）の幅方向両側に設けられた側壁部（２）とを備えたゴム状弾性材製の本体部（６）と、前記本体部（６）内に埋設された帯状の金属補強板（３）と、前記本体部（６）の一端側に設けた、ハウジング側に揺動自在に保持する為の取付部（４）と、前記取付部（４）から離れた位置であって、前記摺
動面部（１）の裏面側に、前記摺動面部（１）を前記チェーン（２０）側に押付けるテンショナリフタ（７０）のプッシュロッド（７１）が当接する受部（８）が設けられているチェーンテンショナ（９）において、
前記受部（８）が前記本体部（６）と一体に成形されたゴム状弾性材製であって、前記受部（８）の前記プッシュロッド（７１）が当接する領域に、硬質材製の板材（８１）が一体的に設けられ、前記板材（８１）が、断面略コ字形状を呈しており、前記受部（８）の両側面（８２）、（８２）を拘束する形で配置されていることを特徴とするチェーンテンショナ。 Provided on both sides of the sliding surface portion (1) in the width direction so that the belt-like sliding surface portion (1) for sliding the chain (20) and the chain (20) do not come off the sliding surface portion (1). A main body (6) made of a rubber-like elastic material having a side wall (2) formed, a strip-shaped metal reinforcing plate (3) embedded in the main body (6), and the main body (6 ) Provided on one end side of the mounting portion (4) for swingably holding on the housing side, and a position away from the mounting portion (4), the back surface side of the sliding surface portion (1) In the chain tensioner (9) provided with a receiving portion (8) against which the push rod (71) of the tensioner lifter (70) that presses the sliding surface portion (1) against the chain (20) side is provided.
The receiving portion (8) is made of a rubber-like elastic material formed integrally with the main body portion (6), and is made of a hard material in a region where the push rod (71) of the receiving portion (8) contacts. The plate member (81) is integrally provided , the plate member (81) has a substantially U-shaped cross section, and restrains both side surfaces (82), (82) of the receiving portion (8). Chain tensioner characterized by being arranged . 前記板材（８１）が、金属材製であることを特徴とする請求項１記載のチェーンテンショナ。   The chain tensioner according to claim 1, wherein the plate (81) is made of a metal material. 前記板材（８１）が、前記受部（８）にカシメ固定されていることを特徴とする請求項２記載のチェーンテンショナ。 The chain tensioner according to claim 2, wherein the plate member (81) is fixed by crimping to the receiving portion (8) . テンショナ（９）が、内燃機関のカムチェーン用に使用されることを特徴とする請求項１〜３のいずれか一項に記載のテンショナ。 Tensioner (9) according to any one of claims 1 to 3, characterized in that the tensioner (9) is used for a cam chain of an internal combustion engine .
JP2009248778A 2009-10-29 2009-10-29 Chain tensioner Active JP5370924B2 (en)

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KR102401305B1 (en) * 2020-05-29 2022-05-25 한국미쯔보시다이아몬드공업(주) Single type scribe head device

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JPH0211830A (en) * 1988-06-30 1990-01-16 Suzuki Motor Co Ltd Cam chain tensioner for four cycle engine
JPH089476Y2 (en) * 1991-11-07 1996-03-21 株式会社椿本チエイン Integrated structure of chain guide arm and shoe
JPH08254253A (en) * 1995-03-20 1996-10-01 Suzuki Motor Corp Chain tensioner
JPH11280857A (en) * 1998-03-30 1999-10-15 Hokushin Ind Inc Chain tensioner
JP2003322227A (en) * 2002-04-26 2003-11-14 Hokushin Ind Inc Tensioner

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