WO2013051337A1 - Tensioner - Google Patents

Tensioner Download PDF

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Publication number
WO2013051337A1
WO2013051337A1 PCT/JP2012/070062 JP2012070062W WO2013051337A1 WO 2013051337 A1 WO2013051337 A1 WO 2013051337A1 JP 2012070062 W JP2012070062 W JP 2012070062W WO 2013051337 A1 WO2013051337 A1 WO 2013051337A1
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WO
WIPO (PCT)
Prior art keywords
tensioner
arm body
receiving
socket member
rubber
Prior art date
Application number
PCT/JP2012/070062
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French (fr)
Japanese (ja)
Inventor
誠 川瀬
侑己 中川
秀和 丹羽
Original Assignee
Nok株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Nok株式会社 filed Critical Nok株式会社
Priority to CN201280048545.9A priority Critical patent/CN103857941B/en
Publication of WO2013051337A1 publication Critical patent/WO2013051337A1/en

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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
    • F16H7/18—Means for guiding or supporting 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
    • 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

Definitions

  • the present invention relates to a tensioner.
  • the present invention also relates to a tensioner for tensioning a chain or belt used as power transmission means.
  • the present invention relates to a tensioner suitably used as a tensioner for a cam chain of an internal combustion engine.
  • FIG. 7 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 cam 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 cam chain guide 40 on the side sliding 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 bottom of the groove.
  • a cam chain tensioner 90 is provided along the cam chain 20 on the side pushed by the drive sprocket 11.
  • the cam 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 a rubber chain elastic member 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 cam chain tensioner pressed. 90 pushes the cam chain 20 to prevent the cam chain 20 from slackening.
  • the cam chain tensioner 90 includes a reinforcing plate made of a steel-based metal having high elasticity, and a belt-like sliding made of a rubber-like elastic material formed integrally with the reinforcing plate. It is comprised from the surface part 600.
  • FIG. The sliding surface portion 600 of the cam 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 side of the cam chain tensioner 90 is a concave groove substantially corresponding to the width of the cam chain 20.
  • the cam chain 20 slides on the bottom of the groove. That is, side wall portions are provided on both sides in the width direction of the sliding surface portion so that the cam chain 20 does not come off from the sliding surface portion.
  • the receiving portion 800 made of a rubber-like elastic material is always subjected to a load by the push rod 71, when used for a long period of time, the receiving portion 800 made of a rubber-like elastic material is stubborn (permanent strain)
  • a tensioner is manufactured only with a resin material.
  • this type of tensioner has a problem that the silent performance is inferior.
  • an attempt has been made to integrally provide a receiving portion made of a rubber-like elastic material on a resin-made tensioner.
  • the tensioner may be deformed by rubber molding pressure.
  • the present invention has been made in view of the above-described problems, and provides a tensioner that has good silent performance, suppresses deformation due to rubber molding pressure on a resin material tensioner, and can be applied to various types of tensioners. For the purpose.
  • the tensioner according to the present invention includes a resin-made arm main body having a belt-like sliding surface for sliding a chain or belt spanned between sprockets, and a receiving surface on the opposite side of the sliding surface of the arm main body.
  • the receiving portion is detachably attached to the arm body, and extends along the side surface of the arm body from both sides of the plate-like portion, and a plate-like portion facing the receiving surface with a gap.
  • a resin-made socket member comprising a leg portion provided with a locking projection that engages with a groove provided on a side surface; a contact portion that is integrally attached to the socket member and contacts the push rod; And a pad portion made of a rubber-like elastic material provided with a buffer portion interposed between the plate-like portion of the socket member and the receiving surface.
  • the present invention has the following effects.
  • the tensioner of the first aspect of the present invention the silent performance is good, the deformation of the resin material tensioner due to the rubber molding pressure is suppressed, and the tensioner can be applied to various types of tensioners.
  • the tensioner of the second aspect of the present invention the integration of the rubber-like elastic material pad portion and the resin material socket member can be reliably achieved without using an adhesive.
  • the buffer portion of the pad portion applies the stress in the direction in which the socket member is always pushed up, the play between the receiving portion and the arm body can be suppressed.
  • the tensioner of the fourth aspect of the invention since the deformation stress applied to the pad portion can be effectively avoided, the stress applied to the socket member can be relaxed and the durability of the receiving portion can be improved.
  • FIG. 2 is a cross-sectional view taken along line AA in FIG. 1.
  • the principal part longitudinal cross-sectional view which passes along the cam chain chamber of the internal combustion engine to which the conventional tensioner is applied.
  • a tensioner 9 includes a resin-made arm body provided with a belt-like sliding surface 12 that slides a chain 20 or a belt spanned between sprockets 11 and 31. 1 and a receiving portion 2 on which the push rod 71 of the tensioner lifter 70 abuts on the receiving surface 13 opposite to the sliding surface 12 of the arm body 1.
  • the receiving portion 2 is detachably attached to the arm main body 1, and a plate-like portion 211 facing the receiving surface 13 with a gap, and along the side surfaces 14 and 14 of the arm main body 1 from both sides of the plate-like portion 211.
  • a resin-made socket member comprising two leg portions 212 and 212 having locking projections 214 and 214 engaged with the groove portions 15 and 15 provided on the side surfaces 14 and 14 of the arm body 1. 21, a contact portion 221 that is integrally attached to the socket member 21 and abuts the push rod 71, and a buffer portion 222 that is interposed between the plate-like portion 211 and the receiving surface 13 of the socket member 21.
  • a rubber-like elastic pad portion 22 is interposed between the plate-like portion 211 and the receiving surface 13 of the socket member 21.
  • the contact part 221 and the buffer part 222 are integrally connected to each other through a through hole 213 provided in the plate-like part 211.
  • the integration of the rubber-like elastic pad portion 22 and the resin socket member 21 can be reliably achieved without using an adhesive, and it can be more reliably integrated if an adhesive is used. Can be achieved.
  • the buffer portion 222 is mounted in a compressed state between the plate-like portion 211 and the receiving surface 13.
  • the buffer portion 222 of the pad portion 22 applies a stress in the direction in which the socket member 21 is always pushed up (upward in FIG. 2), so that rattling between the receiving portion 2 and the arm body 1 can be suppressed. , Better silent performance can be achieved.
  • the locking projections 214 and 214 provided on the leg portions 212 and 212 of the socket member 21 are engaged with the groove portions 15 and 15 so as to be movable toward the sliding surface 12 (downward in FIG. 2). That is, since there is a gap between the locking projections 214 and 214 and the sliding surface 12 side of the grooves 15 and 15, the pressing force of the push rod 71 acts on the pad portion 22, and the entire pad portion 22 is compressed. Then, in response to this movement, the socket member 21 also needs to move to the sliding surface 12 side (downward in FIG. 2).
  • the deformation stress applied to the pad portion 22 can be effectively avoided, the stress applied to the socket member 21 can be relaxed, and the durability of the receiving portion 2 can be improved.
  • the material of the arm body 1 various resin materials can be applied, but a polyamide resin containing no filler is preferably used. Damage to the chain or belt can be reduced by using a resin that does not contain a filler.
  • the material of the pad portion 22 various rubber materials are appropriately selected and used.
  • a rubber that is a heat-resistant rubber material and also has oil resistance against engine oil is selected, but nitrile rubber and acrylic rubber are preferably used.
  • the surface with which the push rod 71 of the contact portion 221 of the pad portion 22 contacts is a convex curved surface along the sliding surface 12.
  • the tensioner 9 according to the second embodiment of the present invention will be described with reference to FIG.
  • the difference from the tensioner 9 according to the first embodiment described above is that the surface with which the push rod 71 of the contact portion 221 of the pad portion 22 abuts is a curved surface that is convex in the direction perpendicular to the sliding surface 12. There is a point.
  • a tensioner 9 according to a third embodiment of the present invention will be described based on FIG.
  • the difference from the tensioner 9 according to the first embodiment described above is that the surface with which the push rod 71 of the contact portion 221 of the pad portion 22 contacts is a flat surface along the sliding surface 12. .
  • a tensioner 9 according to a fourth embodiment of the present invention will be described based on FIG.
  • the difference from the tensioner 9 according to the first embodiment described above is that the surface with which the push rod 71 of the contact portion 221 of the pad portion 22 contacts is a concave curved surface along the sliding surface 12. It is.
  • 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.
  • ⁇ Suitable for use as a tensioner for cam chains of internal combustion engines.

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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

The purpose of the present invention is to provide a tensioner which has favorable sound-quieting performance, represses deformation caused by the rubber molding pressure on a tensioner made of resin material, and can be applied to a variety of forms of tensioner. For this purpose, the present invention adopts the configuration of a tensioner to which are provided an arm body made of resin and provided with a strip-shaped sliding surface for sliding a chain bridged between sprockets, and a receiving part at which a pushrod abuts against a receiving surface of the arm body opposite the sliding surface thereof, wherein the receiving part is provided with: a socket member made of a resin material and comprising a planar part which is detachably mounted onto the arm body and faces the receiving surface with a gap therebetween, and a leg part which extends along a side surface of the arm body from the two sides of the planar part and which is provided with a locking projection for engaging with a groove part provided to the side surface of the arm body; and a pad part made of a rubber-like elastic material and provided with an abutting part which is integrally attached to the socket member and against which the pushrod abuts, and a buffer part interposed between the planar part of the socket member and the receiving surface.

Description

テンショナTensioner
　本発明は、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またはベルト等の張りを緊張させるためのテンショナに関するものである。 The present invention relates to a tensioner.
The present invention also relates to a tensioner for tensioning a chain or belt 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テンショナに関する。 Furthermore, the present invention relates to a tensioner suitably used as a tensioner for a cam chain of an internal combustion engine.
　従来、チェーンまたはベルトの巻き掛け伝動手段を使用した機械装置においては、チェーンまたはベルト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、チェーンまたはベルトの張りを緊張させるためのテンショナが併設されている。 Conventionally, in a mechanical device using a chain or belt winding transmission means, in order to prevent the tension of the chain or the belt from being relaxed and the power transmission efficiency is lowered, the tension of the chain or the belt is tensioned. There is a tensioner.
　具体的には、図７に示す形で使用されている。
　すなわち図７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を案内するカムチェーンガイド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。
　カムチェーンガイド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. 7 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 cam 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 cam chain guide 40 on the side sliding 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 bottom of the groove.
　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。
　このカム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に設けたゴム状弾性材製の受部８００を押し、押されたカム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 cam 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 a rubber chain elastic member 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 cam chain tensioner pressed. 90 pushes the cam chain 20 to prevent the cam chain 20 from slackening.
　カムチェーンテンショナ９０は、図８に示す様に、弾力性に富んだスチール系金属で作られた補強板と、この補強板と一体的に形成されているゴム状弾性材製の帯状の摺動面部６００とから構成されている。
　カムチェーンテンショナ９０の摺動面部６００は、カムチェーン２０の撓みの形に湾曲成型され、そのカムチェーンテンショナ９０の摺動部側の断面は、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が摺動面部から外れる事が無いように摺動面部の幅方向両側に側壁部を設ける構成としている。 As shown in FIG. 8, the cam chain tensioner 90 includes a reinforcing plate made of a steel-based metal having high elasticity, and a belt-like sliding made of a rubber-like elastic material formed integrally with the reinforcing plate. It is comprised from the surface part 600. FIG.
The sliding surface portion 600 of the cam 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 side of the cam chain tensioner 90 is a concave groove substantially corresponding to the width of the cam chain 20. The cam chain 20 slides on the bottom of the groove.
That is, side wall portions are provided on both sides in the width direction of the sliding surface portion so that the cam chain 20 does not come off from the sliding surface portion.
　しかし、ゴム状弾性材製の受部８００は、プッシュロッド７１により常に荷重を受けている為、長期間使用されると、ゴム状弾性材製の受部８００にヘタリ（永久歪み　 However, since the receiving portion 800 made of a rubber-like elastic material is always subjected to a load by the push rod 71, when used for a long period of time, the receiving portion 800 made of a rubber-like elastic material is stubborn (permanent strain)
）が生じ、カムチェーン２０への押圧力が低下すると共に、早期に摩耗する問題を惹起した。
　特に、内燃機関の様な高温の環境に曝される場合は、ゴム状弾性材製の受部８００のヘタリ（永久歪み）が顕著であった。
　更に、構造が複雑となり、製造コストが嵩む問題を惹起した。 ) Occurred, and the pressing force on the cam chain 20 was reduced, and the problem of early wear occurred.
In particular, when exposed to a high-temperature environment such as an internal combustion engine, the settling (permanent distortion) of the receiving portion 800 made of a rubber-like elastic material was remarkable.
In addition, the structure is complicated and the manufacturing cost increases.
　そこで、この様な問題を解決する為に、樹脂材のみでテンショナを製作する事が行われている。
　しかし、この種テンショナは、静音性能が劣る問題があった。
　そこで、樹脂材製のテンショナにゴム状弾性材製の受部を一体的に設ける試みがなされたが、ゴムの成形圧力によりテンショナが変形する危険性を招来した。 Therefore, in order to solve such a problem, a tensioner is manufactured only with a resin material.
However, this type of tensioner has a problem that the silent performance is inferior.
Thus, an attempt has been made to integrally provide a receiving portion made of a rubber-like elastic material on a resin-made tensioner. However, there is a risk that the tensioner may be deformed by rubber molding pressure.
実開平６－１４４４６号公報Japanese Utility Model Publication No. 6-14446 特開２００２－７０９６３号公報JP 2002-70963 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、静音性能が良好で、樹脂材製テンショナへのゴム成形圧力による変形を抑止し、各種形態のテンショナに適用可能な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 provides a tensioner that has good silent performance, suppresses deformation due to rubber molding pressure on a resin material tensioner, and can be applied to various types of tensioners. For the purpose.
　本発明のテンショナは、スプロケット間に架け渡されたチェーンまたはベルトを摺動させる帯状の摺動面を備えた樹脂材製アーム本体と、前記アーム本体の前記摺動面と反対側の受面にテンショナリフタのプッシュロッドが当接する受部を設けたテンショナにおいて、
　前記受部が、前記アーム本体に着脱自在に装着され、前記受面と間隙をもって対峙する板状部と、前記板状部の両側より前記アーム本体の側面に沿って伸びると共に、前記アーム本体の側面に設けた溝部に係合する係止用突起を備えた脚部とより成る樹脂材製ソケット部材と、前記ソケット部材に一体的に取り付けられ、前記プッシュロッドが当接する当接部と、前記ソケット部材の板状部と前記受面との間に介在する緩衝部とを備えたゴム状弾性材製パッド部とを備えていることを特徴とする The tensioner according to the present invention includes a resin-made arm main body having a belt-like sliding surface for sliding a chain or belt spanned between sprockets, and a receiving surface on the opposite side of the sliding surface of the arm main body. In a tensioner provided with a receiving part with which the push rod of the tensioner lifter comes into contact,
The receiving portion is detachably attached to the arm body, and extends along the side surface of the arm body from both sides of the plate-like portion, and a plate-like portion facing the receiving surface with a gap. A resin-made socket member comprising a leg portion provided with a locking projection that engages with a groove provided on a side surface; a contact portion that is integrally attached to the socket member and contacts the push rod; And a pad portion made of a rubber-like elastic material provided with a buffer portion interposed between the plate-like portion of the socket member and the receiving surface.
　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記載の発明のテンショナによれば、静音性能が良好で、樹脂材製テンショナへのゴム成形圧力による変形を抑止し、各種形態のテンショナに適用可能である。
　請求項２記載の発明のテンショナによれば、ゴム状弾性材製パット部と樹脂材製ソケット部材との一体化が、接着剤を使用する事無く、確実に達成できる。 The present invention has the following effects.
According to the tensioner of the first aspect of the present invention, the silent performance is good, the deformation of the resin material tensioner due to the rubber molding pressure is suppressed, and the tensioner can be applied to various types of tensioners.
According to the tensioner of the second aspect of the present invention, the integration of the rubber-like elastic material pad portion and the resin material socket member can be reliably achieved without using an adhesive.
　請求項３記載の発明のテンショナによれば、パット部の緩衝部がソケット部材を常に押し上げる方向の応力を作用させる為、受部とアーム本体との間のガタつきを抑止出来る。
　請求項４記載の発明のテンショナによれば、パット部に加わる変形応力を効果的に回避出来る為、ソケット部材に加わる応力を緩和し、受部の耐久性を向上出来る。 According to the tensioner of the third aspect of the present invention, since the buffer portion of the pad portion applies the stress in the direction in which the socket member is always pushed up, the play between the receiving portion and the arm body can be suppressed.
According to the tensioner of the fourth aspect of the invention, since the deformation stress applied to the pad portion can be effectively avoided, the stress applied to the socket member can be relaxed and the durability of the receiving portion can be improved.
本発明の第１実施形態に係るテンショナの側面図。The side view of the tensioner which concerns on 1st Embodiment of this invention. 図１のＡ－Ａ断面図。FIG. 2 is a cross-sectional view taken along line AA in FIG. 1. 本発明の第２実施形態を図２と同様に示した図。The figure which showed 2nd Embodiment of this invention similarly to FIG. 図１の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。The principal part longitudinal cross-sectional view which passes along the cam chain chamber of the internal combustion engine to which the tensioner of FIG. 1 is applied. 本発明の第３実施形態に係るテンショナの部分側面図。The partial side view of the tensioner which concerns on 3rd Embodiment of this invention. 本発明の第４実施形態に係るテンショナの部分側面図。The partial side view of the tensioner which concerns on 4th Embodiment of this invention. 従来の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。The principal part longitudinal cross-sectional view which passes along the cam chain chamber of the internal combustion engine to which the conventional tensioner is applied. 従来技術に係るテンショナの側面図。The side view of the tensioner which concerns on a prior art.
　以下、本発明を実施するための最良の形態について、図に基づき説明する。
＜第１実施形態＞
　図１、図２及び図４において、本発明に係るテンショナ９は、スプロケット１１、３１間に架け渡されたチェーン２０またはベルトを摺動させる帯状の摺動面１２を備えた樹脂材製アーム本体１と、このアーム本体１の摺動面１２と反対側の受面１３にテンショナリフタ７０のプッシュロッド７１が当接する受部２を設ける構成としている。 The best mode for carrying out the present invention will be described below with reference to the drawings.
<First Embodiment>
1, 2, and 4, a tensioner 9 according to the present invention includes a resin-made arm body provided with a belt-like sliding surface 12 that slides a chain 20 or a belt spanned between sprockets 11 and 31. 1 and a receiving portion 2 on which the push rod 71 of the tensioner lifter 70 abuts on the receiving surface 13 opposite to the sliding surface 12 of the arm body 1.
　そして、この受部２は、アーム本体１に着脱自在に装着され、受面１３と間隙をもって対峙する板状部２１１と、この板状部２１１の両側よりアーム本体１の側面１４、１４に沿って伸びると共に、このアーム本体１の側面１４、１４に設けた溝部１５、１５に係合する係止用突起２１４、２１４を備えた２本の脚部２１２、２１２とより成る樹脂材製ソケット部材２１と、このソケット部材２１に一体的に取り付けられ、プッシュロッド７１が当接する当接部２２１と、ソケット部材２１の板状部２１１と受面１３との間に介在する緩衝部２２２とを備えたゴム状弾性材製パッド部２２とを備えている。 The receiving portion 2 is detachably attached to the arm main body 1, and a plate-like portion 211 facing the receiving surface 13 with a gap, and along the side surfaces 14 and 14 of the arm main body 1 from both sides of the plate-like portion 211. And a resin-made socket member comprising two leg portions 212 and 212 having locking projections 214 and 214 engaged with the groove portions 15 and 15 provided on the side surfaces 14 and 14 of the arm body 1. 21, a contact portion 221 that is integrally attached to the socket member 21 and abuts the push rod 71, and a buffer portion 222 that is interposed between the plate-like portion 211 and the receiving surface 13 of the socket member 21. And a rubber-like elastic pad portion 22.
　そして、この当接部２２１と緩衝部２２２とは、板状部２１１に設けた貫通孔２１３を介して相互に一体的に連結している。 The contact part 221 and the buffer part 222 are integrally connected to each other through a through hole 213 provided in the plate-like part 211.
　このことにより、ゴム状弾性材製パット部２２と樹脂材製ソケット部材２１との一体化が、接着剤を使用する事無く、確実に達成できるし、接着剤を使用すればより確実に一体化が達成できる。 As a result, the integration of the rubber-like elastic pad portion 22 and the resin socket member 21 can be reliably achieved without using an adhesive, and it can be more reliably integrated if an adhesive is used. Can be achieved.
　また、緩衝部２２２は、板状部２１１と受面１３との間で圧縮された状態で装着されている。 Further, the buffer portion 222 is mounted in a compressed state between the plate-like portion 211 and the receiving surface 13.
　この事により、パット部２２の緩衝部２２２が、ソケット部材２１を常に押し上げる（図２における上方）方向の応力を作用させる為、受部２とアーム本体１との間のガタつきを抑止出来る為、より良好な静音性能が達成出来る。 As a result, the buffer portion 222 of the pad portion 22 applies a stress in the direction in which the socket member 21 is always pushed up (upward in FIG. 2), so that rattling between the receiving portion 2 and the arm body 1 can be suppressed. , Better silent performance can be achieved.
　更に、ソケット部材２１の脚部２１２、２１２に設けた係止用突起２１４、２１４は、摺動面１２側（図２における下方）に移動可能に溝部１５、１５と係合している。
　すなわち、係止用突起２１４、２１４と溝部１５、１５の摺動面１２側との間に間隙が存在する為、パット部２２にプッシュロッド７１の押圧力が作用し、パット部２２全体が圧縮されると、この動きに対応してソケット部材２１も摺動面１２側（図２における下方）に移動する必要がある。
　この際、係止用突起２１４、２１４と溝部１５、１５の摺動面１２側との間に間隙が存在する為、係止用突起２１４、２１４は、溝部１５、１５内を容易に摺動面１２側（図２における下方）に移動する事が出来る。 Further, the locking projections 214 and 214 provided on the leg portions 212 and 212 of the socket member 21 are engaged with the groove portions 15 and 15 so as to be movable toward the sliding surface 12 (downward in FIG. 2).
That is, since there is a gap between the locking projections 214 and 214 and the sliding surface 12 side of the grooves 15 and 15, the pressing force of the push rod 71 acts on the pad portion 22, and the entire pad portion 22 is compressed. Then, in response to this movement, the socket member 21 also needs to move to the sliding surface 12 side (downward in FIG. 2).
At this time, since there is a gap between the locking protrusions 214 and 214 and the sliding surface 12 side of the grooves 15 and 15, the locking protrusions 214 and 214 easily slide in the grooves 15 and 15. It can move to the surface 12 side (downward in FIG. 2).
　この為、パット部２２に加わる変形応力を効果的に回避出来、ソケット部材２１に加わる応力を緩和し、受部２の耐久性を向上出来る。 Therefore, the deformation stress applied to the pad portion 22 can be effectively avoided, the stress applied to the socket member 21 can be relaxed, and the durability of the receiving portion 2 can be improved.
　また、アーム本体１の材質は、各種の樹脂材料が適用可能であるが、充填剤を含まないポリアミド樹脂が好適に用いられる。
　充填剤を含まない樹脂を使用する事により、チェーンまたはベルトへのダメージを低減出来る。 Moreover, as the material of the arm body 1, various resin materials can be applied, but a polyamide resin containing no filler is preferably used.
Damage to the chain or belt can be reduced by using a resin that does not contain a filler.
　また、パット部２２の材質としては、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 material of the pad portion 22, various rubber materials are appropriately selected and used. In an environment used in an internal combustion engine, a rubber that is a heat-resistant rubber material and also has oil resistance against engine oil. The material is selected, but nitrile rubber and acrylic rubber are preferably used.
　本実施態様においては、パッド部２２の当接部２２１のプッシュロッド７１が当接する面が、摺動面１２に沿った凸状の湾曲面としている。
　この事により、プッシュロッド７１との当接面積が少ない為、パット部２２の耐久性を向上出来る。 In the present embodiment, the surface with which the push rod 71 of the contact portion 221 of the pad portion 22 contacts is a convex curved surface along the sliding surface 12.
As a result, since the contact area with the push rod 71 is small, the durability of the pad portion 22 can be improved.
＜第２実施形態＞
　ついで、図３に基づき、本発明の第２実施形態に係るテンショナ９を説明する。
　先に説明した第１実施形態に係るテンショナ９と相違する点は、パッド部２２の当接部２２１のプッシュロッド７１が当接する面が、摺動面１２に直交する方向に凸状の曲面である点である。 <Second Embodiment>
Next, the tensioner 9 according to the second embodiment of the present invention will be described with reference to FIG.
The difference from the tensioner 9 according to the first embodiment described above is that the surface with which the push rod 71 of the contact portion 221 of the pad portion 22 abuts is a curved surface that is convex in the direction perpendicular to the sliding surface 12. There is a point.
＜第３実施形態＞
　ついで、図５に基づき、本発明の第３実施形態に係るテンショナ９を説明する。
　先に説明した第１実施形態に係るテンショナ９と相違する点は、パッド部２２の当接部２２１のプッシュロッド７１が当接する面が、摺動面１２に沿った平坦面である点である。 <Third Embodiment>
Next, a tensioner 9 according to a third embodiment of the present invention will be described based on FIG.
The difference from the tensioner 9 according to the first embodiment described above is that the surface with which the push rod 71 of the contact portion 221 of the pad portion 22 contacts is a flat surface along the sliding surface 12. .
　この事により、プッシュロッド７１と広い面積で接触する為、プッシュロッド７１の力を確実にテンショナ９に伝える事が出来る。 This allows the push rod 71 to contact the push rod 71 over a wide area, so that the force of the push rod 71 can be reliably transmitted to the tensioner 9.
＜第４実施形態＞
　ついで、図６に基づき、本発明の第４実施形態に係るテンショナ９を説明する。
　先に説明した第１実施形態に係るテンショナ９と相違する点は、パッド部２２の当接部２２１のプッシュロッド７１が当接する面が、摺動面１２に沿った凹状の湾曲面としている点である。 <Fourth embodiment>
Next, a tensioner 9 according to a fourth embodiment of the present invention will be described based on FIG.
The difference from the tensioner 9 according to the first embodiment described above is that the surface with which the push rod 71 of the contact portion 221 of the pad portion 22 contacts is a concave curved surface along the sliding surface 12. It is.
　この事により、プッシュロッド７１との接触位置を、常にパット部２２の中心に案内する為、プッシュロッド７１の力を確実にテンショナ９に伝える事が出来る。 Because of this, the contact position with the push rod 71 is always guided to the center of the pad portion 22, so that the force of the push rod 71 can be reliably transmitted to the tensioner 9.
　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.
　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。 ∙ Suitable for use as a tensioner for cam chains of internal combustion engines.
１　　アーム本体
２　　受部
９　　テンショナ
１１　スプロケット
１２　摺動面
１３　受面
１４　側面
１５　溝部
２１　ソケット部材
２２　パット部
２１１板状部
２１２脚部
２１３貫通孔
２１４係止用突起
２２１当接部
２２２緩衝部 DESCRIPTION OF SYMBOLS 1 Arm main body 2 Receiving part 9 Tensioner 11 Sprocket 12 Sliding surface 13 Receiving surface 14 Side surface 15 Groove part 21 Socket member 22 Pad part 211 Plate part 212 Leg part 213 Through-hole 214 Locking protrusion 221 Contact part 222 Buffer part

Claims (4)

  1. 　スプロケット（１１）、（３１）間に架け渡されたチェーン（２０）またはベルトを摺動させる帯状の摺動面（１２）を備えた充填材としてガラスを含まない樹脂材製のアーム本体（１）と、前記アーム本体（１）の前記摺動面（１２）と反対側の受面（１３）にテンショナリフタ（７０）のプッシュロッド（７１）が当接する受部（２）を設けたテンショナ（９）において、
    　前記受部（２）が、前記アーム本体（１）側に固着される共に、充填材としてガラスを含む樹脂材製の支持部（２１）と、前記支持部（２１）の表面に前記プッシュロッド（７１）が当接するゴム状弾性材製の当接部（２２）とより構成されていることを特徴とするテンショナ。     Arm body (1) made of a resin material not containing glass as a filler provided with a belt-like sliding surface (12) for sliding a chain (20) or a belt laid between sprockets (11) and (31) And a receiving portion (2) in which the push rod (71) of the tensioner lifter (70) abuts on the receiving surface (13) opposite to the sliding surface (12) of the arm body (1). In (9),
    The receiving portion (2) is fixed to the arm main body (1) side, and a support portion (21) made of a resin material containing glass as a filler, and the push rod on the surface of the support portion (21) A tensioner comprising a contact portion (22) made of a rubber-like elastic material with which (71) contacts.
  2. 　前記支持部（２１）が、前記アーム本体（１）との間に抜け防止手段（２１１）を設けていることを特徴とする請求項１記載のテンショナ。 The tensioner according to claim 1, characterized in that the supporting part (21) is provided with a means for preventing slipping (211) between the arm body (1).
  3. 　前記アーム本体（１）と前記支持部（２１）が二色成形方法のより一体成形した後、前記支持部（２１）の表面に前記当接部（２２）を一体成形したことを特徴とする請求項１または２記載のテンショナ。 The arm main body (1) and the support portion (21) are integrally formed by a two-color molding method, and then the contact portion (22) is integrally formed on the surface of the support portion (21). The tensioner according to claim 1 or 2.
  4. 　前記支持部（２１）に前記当接部（２２）を一体成形した後、前記支持部（２１）を前記アーム本体（１）に固着したことを特徴とする請求項１または２記載のテンショナ。 The tensioner according to claim 1 or 2, wherein the support portion (21) is fixed to the arm body (1) after the contact portion (22) is integrally formed with the support portion (21).
PCT/JP2012/070062 2011-10-06 2012-08-07 Tensioner WO2013051337A1 (en)

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JP2011221767A JP5800191B2 (en) 2011-10-06 2011-10-06 Tensioner
JP2011-221767 2011-10-06

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JPH10311395A (en) * 1997-05-12 1998-11-24 Tsubakimoto Chain Co Chain slide-contact shoe member of transmission chain running guide device
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JP2000356252A (en) * 1999-06-15 2000-12-26 Tsubakimoto Chain Co Tensioner lever
JP2002070963A (en) * 2000-09-01 2002-03-08 Ntn Corp Chain tensioner device
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JP2006250208A (en) * 2005-03-09 2006-09-21 Tsubakimoto Chain Co Guide for transmission
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0614446U (en) * 1992-07-31 1994-02-25 ダイハツ工業株式会社 Tensioner for timing chain
JPH10311395A (en) * 1997-05-12 1998-11-24 Tsubakimoto Chain Co Chain slide-contact shoe member of transmission chain running guide device
JPH11280857A (en) * 1998-03-30 1999-10-15 Hokushin Ind Inc Chain tensioner
JP2004116680A (en) * 2002-09-26 2004-04-15 Tsubakimoto Chain Co Pad for tensioner lever
JP2009014073A (en) * 2007-07-03 2009-01-22 Honda Motor Co Ltd Tensioner device

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CN103857941B (en) 2016-06-08
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JP5800191B2 (en) 2015-10-28

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