JP2008281058A - Roller chain - Google Patents

Roller chain Download PDF

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Publication number
JP2008281058A
JP2008281058A JP2007124485A JP2007124485A JP2008281058A JP 2008281058 A JP2008281058 A JP 2008281058A JP 2007124485 A JP2007124485 A JP 2007124485A JP 2007124485 A JP2007124485 A JP 2007124485A JP 2008281058 A JP2008281058 A JP 2008281058A
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Prior art keywords
bush
annular
link plate
hole
inner link
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JP2007124485A
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JP4459252B2 (en
Inventor
Koji Kobayashi
浩司 小林
Keiichi Sawada
啓一 澤田
Tomohiko Fujita
知彦 藤田
Toshiyuki Teraoka
俊幸 寺岡
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Tsubakimoto Chain Co
IZUMI CHAIN KK
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Tsubakimoto Chain Co
IZUMI CHAIN KK
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Priority to JP2007124485A priority Critical patent/JP4459252B2/en
Publication of JP2008281058A publication Critical patent/JP2008281058A/en
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Publication of JP4459252B2 publication Critical patent/JP4459252B2/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a roller chain wherein a bush is firmly fitted and fixed to a bush hole formed in an inner link plate in order to prevent deviation between the inner link plate and the bush even when the impact load or the high load is actuated to the chain, or a lubricating oil is imparted between the bush and the pin. <P>SOLUTION: An annular recession part 5a comprising a vertical annular part 5b and a tilt annular part 5c is formed on an end edge part of the bush hole 5 formed in the inner link plate 4 of the roller chain 1. An annular thin part 3a formed on both end edges of the bush 3 in such a manner of being thinner gradually is clamped and tacked to the annular recession part 5a side of the bush hole 5, and thereby, the bush 3 press-fitted in the bush hole 5 is firmly fitted and fixed to the bush hole 5 of the inner link plate 4. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、動力伝達(伝動)、搬送(コンベヤ)等に用いるローラチェーンに関し、詳しくは、内リンクプレートのブシュ孔にブシュがずれないように強固に嵌合固定されたローラチェーンに関する。   The present invention relates to a roller chain used for power transmission (transmission), conveyance (conveyor), and the like, and more particularly, to a roller chain that is firmly fitted and fixed to a bush hole of an inner link plate so that the bush does not shift.

ローラチェーンは、高速伝動チェーン、高負荷伝動チェーン、コンベヤチェーン等として広く使用されている。このように使用されているローラチェーンは、走行中に高速・低速の急激な速度変更による衝撃荷重を受けたり、高負荷が作用した場合、チェーンに捩れが生じることがある。捩れが生じると、スプロケットとの噛合い時にチェーン走行方向と直交する方向に負荷が掛かるため、内リンクプレートとブシュとの固着部にずれが生じ、対向する内リンクプレート同士が外側に広がるように移動し、内リンクプレートと外リンクプレートとが面接触するようになる。この面接触により、接触抵抗が生じるため、チェーンの屈曲が円滑に行われず、チェーンとスプロケットとが噛合い不良を起こし該チェーンがスプロケットに乗り上げる等の不都合な現象を起こすと共に、チェーンが破損することがある。かかる不都合を回避するために、従来、内リンクプレートとブシュとの結合力を強くするようにしたローラチェーンが提案されている(特許文献1参照。)。
特開昭56−109941号公報
Roller chains are widely used as high-speed transmission chains, high-load transmission chains, conveyor chains, and the like. The roller chain used in this way may be twisted when subjected to an impact load due to a rapid speed change at high speed or low speed during travel or when a high load is applied. When twisting occurs, a load is applied in the direction perpendicular to the chain traveling direction when meshing with the sprocket, so that the fixing portion between the inner link plate and the bushing is displaced, and the opposing inner link plates spread outward. The inner link plate and the outer link plate come into surface contact with each other. This surface contact causes contact resistance, so the chain does not bend smoothly, causing the chain and sprocket to mesh poorly, causing the chain to run on the sprocket and causing damage to the chain. There is. In order to avoid such an inconvenience, conventionally, a roller chain has been proposed in which the coupling force between the inner link plate and the bush is increased (see Patent Document 1).
JP 56-109941 A

前記従来のローラチェーン(特許文献1)は、図7に示すように、ローラ11が外嵌されたブシュ12の両端部外周面に凸条13を設け、この凸条13が内リンクプレート14のブシュ孔15内周面を咬持するようにしまり嵌めしたものである。しかし、このようにしても、チェーンに衝撃荷重、高負荷が作用すると凸条13がブシュ孔15の内周面に咬持されているだけであるため、満足な結合力が得られず、内リンクプレート14とブシュ12との間にずれが生じる、という問題がある。さらに、ブシュ12とピン(図示略)との摩擦を抑制するように潤滑油などを付与すると、ブシュ孔15とブシュ12との間に潤滑油などがしみ込み結合力が低下し、内リンクプレート14とブシュ12との間にずれが生じる、という問題がある。   As shown in FIG. 7, the conventional roller chain (Patent Document 1) is provided with protrusions 13 on the outer peripheral surfaces of both ends of a bush 12 to which the roller 11 is fitted, and the protrusions 13 are formed on the inner link plate 14. The bush hole 15 is fitted so that the inner peripheral surface of the bush hole 15 is bitten. However, even in this case, when an impact load or a high load is applied to the chain, the protrusion 13 is only held by the inner peripheral surface of the bush hole 15, so that a satisfactory coupling force cannot be obtained. There is a problem that a shift occurs between the link plate 14 and the bush 12. Further, when lubricating oil or the like is applied so as to suppress friction between the bushing 12 and the pin (not shown), the lubricating oil or the like penetrates between the bushing hole 15 and the bushing 12 to reduce the coupling force, and the inner link plate. There is a problem that a deviation occurs between the bush 14 and the bush 12.

そこで、本発明は、前記したような従来の問題を解決し、チェーンに衝撃荷重、高負荷が作用した場合、さらにピンの摩耗によるチェーン伸びを抑制するためにブシュとピンとの間に潤滑油などを付与して使用した場合でも、内リンクプレートとブシュとの間にずれが生じないように、内リンクプレートに形成されたブシュ孔にブシュを強固に嵌合固定したローラチェーンを提供することを目的とする。   Therefore, the present invention solves the conventional problems as described above, and when an impact load or a high load is applied to the chain, a lubricating oil or the like is provided between the bush and the pin to further suppress chain elongation due to pin wear. To provide a roller chain in which the bushing is firmly fitted and fixed in the bushing hole formed in the inner link plate so that there is no deviation between the inner link plate and the bushing even when used. Objective.

前記目的を達成するために、請求項1に係る本発明は、ローラが回転自在に外嵌されたブシュの両端が一対の内リンクプレートに形成されたブシュ孔に嵌合固定され、前記ブシュ内に回転自在に挿入されたピンが一対の外リンクプレートに形成されたピン孔に嵌着されてなるローラチェーンにおいて、前記ブシュ孔の端縁部には、垂直環状部と傾斜環状部とからなる環状凹部が形成され、前記ブシュ孔に圧入された前記ブシュは、該ブシュの両端縁に徐々に肉薄となるように形成された環状薄肉部を前記ブシュ孔の環状凹部側にかしめて、締鋲されているローラチェーン、としたものである。   In order to achieve the above object, the present invention according to claim 1 is characterized in that both ends of a bush on which a roller is rotatably fitted are fitted and fixed in bush holes formed in a pair of inner link plates. In a roller chain in which a pin inserted rotatably into a pin hole formed in a pair of outer link plates, an end portion of the bush hole includes a vertical annular portion and an inclined annular portion. An annular recess is formed, and the bush press-fitted into the bushing hole is clamped by caulking the annular thin part formed so as to gradually become thinner at both ends of the bush toward the annular recess side of the bushing hole. It is a roller chain.

請求項1に係る本発明のローラチェーンは、リンクプレートに形成されているブシュ孔の端縁部には、垂直環状部と傾斜環状部とからなる環状凹部が形成され、ブシュ孔に圧入されたブシュは、該ブシュの両端縁に徐々に肉薄となるように形成された環状薄肉部を前記ブシュ孔の環状凹部側にかしめて締鋲されているので、ブシュ両端が一対のリンクプレートに固定され、ブシュ孔にブシュを強固に嵌合固定することができ、チェーンに衝撃荷重、高負荷が作用した場合でも、内リンクプレートとブシュとの間にずれが生じないようにすることができる。さらに、ブシュとピンとの間に潤滑油が付与されて使用された場合でも、ブシュの両端部の環状薄肉部がブシュ孔の環状凹部側にかしめられているので、このかしめで形成された環状のかしめ部(平締鋲部)によりブシュ孔とブシュとの間への潤滑油侵入を抑制することができ、その結果、内リンクプレートとブシュとの間にずれが生じないようにすることができる。   In the roller chain according to the first aspect of the present invention, an annular recess formed of a vertical annular portion and an inclined annular portion is formed at the edge of the bush hole formed in the link plate, and is press-fitted into the bush hole. Since the bush is clamped by crimping an annular thin portion formed so as to be gradually thinner at both ends of the bush toward the annular recess of the bush hole, both ends of the bush are fixed to a pair of link plates. The bush can be firmly fitted and fixed in the bush hole, and even when an impact load or a high load is applied to the chain, it is possible to prevent a shift between the inner link plate and the bush. Furthermore, even when lubricating oil is applied between the bushing and the pin, the annular thin portions at both ends of the bushing are caulked to the annular recess side of the bushing hole. The caulking portion (flat tightening portion) can suppress the intrusion of the lubricating oil between the bushing hole and the bushing, and as a result, it is possible to prevent the displacement between the inner link plate and the bushing. .

本発明の実施例を図1〜図6を参照して説明する。ローラチェーン1は、図1、図2に示すように、ローラ2が回転自在に外嵌されたブシュ3の両端が一対の内リンクプレート4,4にそれぞれ形成された一対のブシュ孔5,5に嵌合固定され、ブシュ3内に回転自在に挿入されたピン6両端が一対の外リンクプレート7,7にそれぞれ形成された一対のピン孔8,8に嵌着されてなるものである。なお、図1、図2における符号9はクリップである。   An embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 2, the roller chain 1 has a pair of bush holes 5, 5 in which both ends of a bush 3 on which the roller 2 is rotatably fitted are formed in a pair of inner link plates 4, 4, respectively. The both ends of the pin 6 that is fitted and fixed to the bush 3 and rotatably inserted into the bush 3 are fitted into a pair of pin holes 8 and 8 formed in the pair of outer link plates 7 and 7, respectively. In addition, the code | symbol 9 in FIG. 1, FIG. 2 is a clip.

図3、図4に示すように、内リンクプレート4に形成されたブシュ孔5の端縁部には、プレート面4a側に開口する垂直環状部5bと、該垂直環状部5bに連設された傾斜環状部5cとからなる環状凹部5aが形成され、この傾斜環状部5cはプレート面4a側に向けて徐々に内径が大きくなる末広状になっている。この場合、垂直環状部5bを設けないで傾斜環状部5cのみで環状凹部5aを形成してもよい。この環状凹部5aは、内リンクプレート4の少なくとも外リンクプレート7に対峙するプレート面4a側に形成されている。なお、環状凹部5aがブシュ孔5の両端縁部、すなわち表裏両プレート面4a,4a側に形成されている場合は、チェーン製造時に内リンクプレート4の表裏を区別する必要がないため、組み立て工程を簡略化することができる。   As shown in FIGS. 3 and 4, the end of the bush hole 5 formed in the inner link plate 4 is connected to the vertical annular portion 5 b that opens to the plate surface 4 a side, and the vertical annular portion 5 b. An annular concave portion 5a comprising the inclined annular portion 5c is formed, and the inclined annular portion 5c has a divergent shape in which the inner diameter gradually increases toward the plate surface 4a. In this case, the annular recess 5a may be formed only by the inclined annular portion 5c without providing the vertical annular portion 5b. The annular recess 5 a is formed on the plate surface 4 a side facing at least the outer link plate 7 of the inner link plate 4. When the annular recess 5a is formed on both edge portions of the bushing hole 5, that is, on both the front and back plate surfaces 4a, 4a side, it is not necessary to distinguish the front and back of the inner link plate 4 when manufacturing the chain. Can be simplified.

内リンクプレート4のブシュ孔5に固定されるブシュ3は、図5に示すように、両端縁が徐々に先端側が肉薄となるように形成された環状薄肉部3aを有する。このブシュ3を内リンクプレート4のブシュ孔5に圧入(しまり嵌め)した後、ブシュ3の内径が縮小しないように、環状薄肉部3aをかしめ工具、例えばかしめパンチ、締鋲ぱんち、かしめ金型などによりブシュ孔5の環状凹部5a側にかしめて塑性変形させ、図6に示すように、このかしめにより形成された環状かしめ部(平締鋲部)3bでブシュ3とブシュ孔5とでずれが生じないように固定する。   As shown in FIG. 5, the bush 3 fixed to the bush hole 5 of the inner link plate 4 has an annular thin portion 3 a formed so that both end edges gradually become thinner at the front end side. After the bush 3 is press-fitted (tightly fitted) into the bush hole 5 of the inner link plate 4, the annular thin portion 3a is caulked with a tool such as caulking punch, clamping punch, caulking die so that the inner diameter of the bush 3 is not reduced. For example, as shown in FIG. 6, the bush 3 and the bush hole 5 are displaced by the annular caulking portion (flat clamping portion) 3b formed by caulking to the annular recess 5a side of the bush hole 5 by plastic deformation. Fix so that does not occur.

この場合、環状かしめ部3bは、内リンクプレート4のプレート面4aと面一になっていても、プレート面4aから突出していてもよい。環状かしめ部3bが突出している場合は、環状かしめ部(平締鋲部)3bが隣接する外リンクプレート7に接触し、内リンクプレート4と外リンクプレート7との当接面の面積が小さく摩擦抵抗が小さくなるため、屈曲抵抗を減少させることができ、チェーンを円滑に屈曲させることが可能となる。   In this case, the annular caulking portion 3b may be flush with the plate surface 4a of the inner link plate 4 or may protrude from the plate surface 4a. When the annular caulking portion 3b protrudes, the annular caulking portion (flat clamping portion) 3b contacts the adjacent outer link plate 7, and the area of the contact surface between the inner link plate 4 and the outer link plate 7 is small. Since the frictional resistance is reduced, the bending resistance can be reduced and the chain can be bent smoothly.

上記構成からなるローラチェーン1によれば、両端縁が徐々に肉薄となるように形成された環状薄肉部3aを有するブシュ3を内リンクプレート4のブシュ孔5に圧入した後、環状薄肉部3aをブシュ孔5の環状凹部5a側にかしめて、このかしめにより形成された環状かしめ部3bで固定することによりブシュ3がブシュ孔5に固定されているので、内リンクプレート4のブシュ孔5にブシュ3を強固に固定することができる。   According to the roller chain 1 having the above-described configuration, after the bush 3 having the annular thin portion 3a formed so that both end edges are gradually thinned is press-fitted into the bush hole 5 of the inner link plate 4, the annular thin portion 3a Since the bush 3 is fixed to the bush hole 5 by crimping the bush 3 to the annular recess 5a side of the bush hole 5 and fixing it with the annular crimp part 3b formed by this caulking, the bush 3 is fixed to the bush hole 5 of the inner link plate 4. The bush 3 can be firmly fixed.

その結果、チェーンに衝撃荷重、高負荷が作用した場合でも、ブシュ3と内リンクプレート4との間にずれが生じないようにすることができる。さらに、ブシュ3内周面とピン6との摩耗を抑制するためブシュ3とピン6との間に潤滑油を付与して使用した場合でも、ブシュ3の両端部の環状薄肉部3aがブシュ孔5の環状凹部5a側に環状にかしめられているので、このかしめで形成された環状かしめ部(平締鋲部)3bによりブシュ3とブシュ孔5との間への潤滑油侵入を抑制することができ、ブシュ3と内リンクプレート4との間にずれが生じないようにすることができる。また、ブシュ3と内リンクプレート4との間にずれが生じないようにしたので、チェーンとスプロケットとの噛合い不良に起因するチェーン破損を防止することができる。   As a result, even when an impact load or a high load is applied to the chain, it is possible to prevent a shift between the bush 3 and the inner link plate 4. Further, even when lubricating oil is applied between the bush 3 and the pin 6 in order to suppress wear between the inner peripheral surface of the bush 3 and the pin 6, the annular thin portions 3a at both ends of the bush 3 are formed in the bush hole. Since the annular caulking portion 5 is caulked in an annular shape toward the annular recess 5a side, the intrusion of lubricating oil between the bush 3 and the bush hole 5 is suppressed by the annular caulking portion (flat clamping portion) 3b formed by this caulking. It is possible to prevent deviation between the bush 3 and the inner link plate 4. Further, since no deviation occurs between the bush 3 and the inner link plate 4, chain breakage due to poor meshing between the chain and the sprocket can be prevented.

本発明実施例のローラチェーンの要部を断面で示した一部平面図である。It is the partial top view which showed the principal part of the roller chain of this invention Example by the cross section. ローラチェーンの一部正面図である。It is a partial front view of a roller chain. 内リンクプレートの正面図である。It is a front view of an inner link plate. 内リンクプレートの断面図である。It is sectional drawing of an inner link plate. ブシュの断面図である。It is sectional drawing of a bush. 本発明実施例のローラチェーンの要部説明図である。It is principal part explanatory drawing of the roller chain of this invention Example. 従来のブシュ孔とブシュとの嵌合状態を示す説明図である。It is explanatory drawing which shows the fitting state of the conventional bush hole and bush.

符号の説明Explanation of symbols

1 ローラチェーン
2 ローラ
3 ブシュ
3a 環状薄肉部
3b 環状かしめ部
4 内リンクプレート
4a プレート面
5 ブシュ孔
5a 環状凹部
5b 垂直環状部
5c 傾斜環状部
6 ピン
7 外リンクプレート
8 ピン孔
9 クリップ
DESCRIPTION OF SYMBOLS 1 Roller chain 2 Roller 3 Bush 3a Annular thin part 3b Annular caulking part 4 Inner link plate 4a Plate surface 5 Bush hole 5a Annular recessed part 5b Vertical annular part 5c Inclined annular part 6 Pin 7 Outer link plate 8 Pin hole 9 Clip

Claims (1)

ローラが回転自在に外嵌されたブシュの両端が一対の内リンクプレートに形成されたブシュ孔に嵌合固定され、前記ブシュ内に回転自在に挿入されたピンが一対の外リンクプレートに形成されたピン孔に嵌着されてなるローラチェーンにおいて、
前記ブシュ孔の端縁部には、垂直環状部と傾斜環状部とからなる環状凹部が形成され、
前記ブシュ孔に圧入された前記ブシュは、該ブシュの両端縁に徐々に肉薄となるように形成された環状薄肉部を前記ブシュ孔の環状凹部側にかしめて締鋲されていることを特徴とするローラチェーン。
Both ends of a bush on which the roller is rotatably fitted are fitted and fixed in bush holes formed in the pair of inner link plates, and pins inserted rotatably in the bush are formed on the pair of outer link plates. In the roller chain that is fitted in the pin hole,
An annular recess composed of a vertical annular portion and an inclined annular portion is formed at the edge of the bush hole,
The bush press-fitted into the bushing hole is characterized in that an annular thin part formed so as to be gradually thinned at both ends of the bush is crimped by crimping to the annular recess side of the bushing hole. Roller chain to do.
JP2007124485A 2007-05-09 2007-05-09 Roller chain Active JP4459252B2 (en)

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Application Number Priority Date Filing Date Title
JP2007124485A JP4459252B2 (en) 2007-05-09 2007-05-09 Roller chain

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JP2008281058A true JP2008281058A (en) 2008-11-20
JP4459252B2 JP4459252B2 (en) 2010-04-28

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105221663A (en) * 2015-11-12 2016-01-06 浙江神龙链传动有限公司 A kind of special chain being applicable to worst hot case
CN108506420A (en) * 2017-02-24 2018-09-07 东莞超汇链条有限公司 A kind of Novel sleeve chain bush
JP2018179121A (en) * 2017-04-12 2018-11-15 株式会社江沼チヱン製作所 Roller chain
WO2019138585A1 (en) * 2018-01-15 2019-07-18 大同工業株式会社 Sealed chain
JP2021004615A (en) * 2019-06-25 2021-01-14 株式会社椿本チエイン Chain and manufacturing method of chain

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105221663A (en) * 2015-11-12 2016-01-06 浙江神龙链传动有限公司 A kind of special chain being applicable to worst hot case
CN108506420A (en) * 2017-02-24 2018-09-07 东莞超汇链条有限公司 A kind of Novel sleeve chain bush
JP2018179121A (en) * 2017-04-12 2018-11-15 株式会社江沼チヱン製作所 Roller chain
WO2019138585A1 (en) * 2018-01-15 2019-07-18 大同工業株式会社 Sealed chain
JP2021004615A (en) * 2019-06-25 2021-01-14 株式会社椿本チエイン Chain and manufacturing method of chain

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