JP3482445B2 - Shoe mounting structure for tensioner lever, etc. - Google Patents
Shoe mounting structure for tensioner lever, etc.Info
- Publication number
- JP3482445B2 JP3482445B2 JP31906299A JP31906299A JP3482445B2 JP 3482445 B2 JP3482445 B2 JP 3482445B2 JP 31906299 A JP31906299 A JP 31906299A JP 31906299 A JP31906299 A JP 31906299A JP 3482445 B2 JP3482445 B2 JP 3482445B2
- Authority
- JP
- Japan
- Prior art keywords
- shoe
- arm
- chain
- tensioner lever
- mounting structure
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
Landscapes
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は駆動軸と従動軸のス
プロケットに巻き掛けられたチェーンに、常時適度な緊
張力を与えるテンショナーレバー、またテンショナーレ
バーの反対側に配置されるチェーンガイド及びチェーン
ダンパーにおけるシューがガタ付くことなく取付けられ
る構造に関するものである。
【０００２】
【従来の技術】図４は一般的なチェーン駆動装置を表わ
しているが、チェーン(イ)は駆動軸(ロ)と従動軸(ハ)に
取着しているスプロケット(ニ)、(ホ)に巻き掛けられて
おり、該チェーン(イ)はテンショナーレバー(ヘ)によっ
て押圧されて適度な緊張力が常時作用している。従って
両スプロケット(ニ)、(ホ)の回転と共に走行するチェー
ン(イ)の振動を抑制し、従動軸(ハ)へ時間の遅れを生じ
ることなく伝達される。また振動を抑制することでチェ
ーン(イ)に作用する衝撃力はなくなり、チェーン寿命を
向上させることが出来る。
【０００３】ところで、テンショナーレバー(ヘ)はテン
ショナー(ト)によって押圧されてチェーン(イ)に作用し
ているが、このテンショナーレバー(ヘ)の形態には色々
あり、一般的には金属製アームにゴム製又は樹脂製のシ
ューが接着されたり、またシューがアームと一体的に成
形されている。上記シューをアームに接着した場合には
剥がれることもあり、又シューをアームと一体成形する
場合には成形金型を必要として製作コストは高くなる。
【０００４】そこで別々に製作したアームとシューを、
接着剤を用いることなく組立て・固定したテンショナー
レバーが知られている。実公平７−３６２０１号に係る
「合成樹脂製シューを備えたチェーンガイドレール」は
シューをシュー支持部材に着脱可能に取付けた構造とな
っている。すなわち、シュー支持部材のチェーン走行始
端部にシューに形成した端部フック片を係合し、又シュ
ーに形成したＬ字状の側面係合片をシュー支持部材に係
合して取着している。
【０００５】このようにシューはシュー支持部材に着脱
可能な状態で取付けられることになるが、該シューには
Ｌ字状の側面係合片を両側面に形成している為に、取付
け出来るようにシュー支持部材には切欠き溝が両側に形
成され、この切欠き溝からＬ字状係合片を嵌め、チェー
ン走行方向へ移動して端部フック片をチェーン走行始端
部に係合している。しかし、シュー支持部材に切欠き溝
を形成することでその強度は低下する。そこで、一方の
側面にはＬ字状係合片を形成し、他方の側面には突条片
を設け、そしてチェーン走行始端部に係合するＵ字状の
端部フック片を形成した「テンショナーレバーのシュー
の浮上がり防止構造」が知られている(実用新案登録第
２５１９４７６号)。
【０００６】このように他方の側面に突条片を形成する
ことで、アーム側面に大きな切欠きを設けなくてもシュ
ーの着脱は簡単に行うことが出来る。しかし、チェーン
走行始端部に係合するだけの状態にある端部フック片
は、チェーン走行とは反対方向への力が作用する場合に
位置ズレし、時にはチェーン走行始端部から端部フック
片が外れてしまう。このような現象は前記実公平７−３
６２０１号に係る「合成樹脂製シューを備えたチェーン
ガイドレール」の場合にも発生する。
【０００７】
【発明が解決しようとする課題】このように、テンショ
ナーレバー等のアームに取付けられるシューには上記の
ごとき問題がある。本発明が解決しようとする課題はこ
の問題点であって、シューの取付け・取外しが容易であ
ると共に、位置ズレしたり外れることのないシューの取
り付け構造を提供する。
【０００８】
【課題を解決する為の手段】本発明に係るシューの取付
け構造はアームに簡単に取付け・取外しが出来ると共
に、位置ズレすることがないようにしている。そこで、
湾曲して延びているシューの片側にはＬ字状係合片を形
成し、又シューの裏面(アームとの接触面)には突条片を
突出している。上記Ｌ字状係合片及び突条片は所定の長
さにわたって連続して形成する場合もあり、複数箇所に
分離して設ける場合もある。そしてチェーン始端部には
シューの裏面に突起部を突出している。
【０００９】一方のアームには上記Ｌ字状係合片が係合
する為の切欠き溝が設けられ、又アーム外周には穴又は
窪みを形成してシューの裏面に突出する突条片が嵌合す
ることが出来、そしてチェーン走行始端部には突起部が
嵌る溝が設けられている。従ってアームに取付けられた
シューはＬ字状係合片と突条片の係合にて外れたり、浮
上することはなく、Ｌ字状突起部が切欠き溝に係合する
と共に突起部が溝に嵌ることで長手方向の位置決めが行
われ、ガタ付きが防止される。以下、本発明に係る実施
例を図面に基づいて詳細に説明する。
【００１０】
【実施例】図1は本発明の実施例であって、チェーンテ
ンショナーレバーの具体例を示している。テンショナー
レバーは湾曲したアーム1とシュー2からなり、シュー2
はアーム１の外周に取付けられて、該シュー2が磨耗な
どで損傷した場合には交換することが出来るように、取
外し出来る取付け構造となっている。
【００１１】図2はシュー2をアーム1から取外した状態
であり、アーム1はアルミ合金等を材質とし、チェーン
走行始端部側には揺動軸が嵌る軸穴3が貫通し、全体を
軽量化する為に細長い窓４，４…が設けられている。外
周面5は滑らかな曲面をなし、一方の側面６には切欠き
溝７，７…が形成されている。そして、外周面5には穴
８，８が設けられて窓４，４に貫通し、さらにチェーン
走行始端部には溝9が形成されている。
【００１２】一方のシュー2はゴム又は樹脂等を成形し
て製作され、アーム1の外周面5になじむことが出来るよ
うに滑らかに湾曲している。チェーンが走行する外周面
１０の両側にはガイド１１，１１が起立し、チェーン走
行始端部には突起部１２が裏面側に突出し、そして図に
は表れていないが、裏面には突条片が突出している。さ
らにシュー2の片側面にはＬ字状係合片１３，１３…が
裏側に向いて形成されている。
【００１３】そこで、シュー2の裏面はアーム外周面5に
接し、この場合、チェーン走行始端部の突起部１２は溝
9に嵌り、Ｌ字状係合片１３，１３…は切欠き溝７，７
…に係合し、突条片は穴８，８に嵌合する。前記図1は
アーム1にシュー２を取り付けた状態であり、図1のＡ―
Ａ断面拡大図を図3に示している。
【００１４】(ｃ)はシュー2がアーム1に取着している場
合であり、(ａ)はシュー２を取外す場合、(ｂ)はシュー
2をアーム1に取付ける場合をそれぞれ示している。シュ
ー2の裏面１４には突条片１５が突出し、この突条片１
５の断面は直角三角形を形成し、Ｌ字状係合片１３を形
成している側は裏面１４から垂直に立ち上る係止面１６
となっている。この突条片１５はアーム1の外周面5に形
成した穴８に嵌合することになるが、係止面１６は穴８
の内面に当接して突条片１５が係止することが出来る。
【００１５】このシュー2をアーム1から取外す場合に
は、Ｌ字状係合片１３とは反対側に先の尖った工具を差
し込んで突条片１５を穴８から外すならば、シュー２全
体がＬ字状係合片側へ移動して外れる。逆にアーム1に
シュー2を取付ける場合には、(ｂ)に示すようにＬ字状
係合片１３，１３…をアーム1の側面6に形成している切
欠き溝７，７…に嵌め、その状態で矢印方向へ押圧する
ならば突条片１５は穴8に嵌入することが出来る。この
場合、チェーン走行始端部の突起部１２も同じく溝９に
嵌合する。
【００１６】以上述べたように、本発明に係るシュー取
付け構造は、シューの側面に形成したＬ字状係合片をア
ーム側面の切欠き溝に係合し、裏面に突出した突条片を
アーム外周面の穴に嵌入し、さらにチェーン走行始端部
の突起部は溝に嵌合したものであり、次のような効果を
得ることが出来る。
【００１７】
【発明の効果】このようにシューに設けたＬ字状係合片
をアームの切欠き溝に係合すると共に、突条片を穴に嵌
入して係止することにより、シューはアームから外れる
ことはなく、又アームから浮上することもない。勿論、
シューが側方へ移動することはあり得ない。一方、突起
部が溝に嵌合することで、アームの長手方向の動き並び
にガタ付きを防止する事が出来、その結果、騒音を抑制
することになると共にシューの損傷防止に繋がる。さら
に、取付けしたシューは位置ズレしないようになってい
るが、着脱操作は簡単に行うことが出来る。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tensioner lever which always applies an appropriate tension to a chain wound around a sprocket of a drive shaft and a driven shaft, and an opposite to the tensioner lever. The present invention relates to a structure in which shoes of a chain guide and a chain damper arranged on the side are attached without rattling. 2. Description of the Related Art FIG. 4 shows a general chain drive device. A chain (a) has a sprocket (d) attached to a drive shaft (b) and a driven shaft (c). (E), and the chain (a) is pressed by the tensioner lever (f) so that an appropriate tension is constantly applied. Accordingly, the vibration of the chain (a) traveling along with the rotation of the two sprockets (d) and (e) is suppressed, and the vibration is transmitted to the driven shaft (c) without delay. Further, by suppressing the vibration, the impact force acting on the chain (a) is eliminated, and the life of the chain can be improved. The tensioner lever (f) is pressed by the tensioner (g) and acts on the chain (a). There are various forms of the tensioner lever (f), and generally, a metal arm is used. A rubber or resin shoe is bonded to the arm, and the shoe is formed integrally with the arm. When the shoe is adhered to the arm, the shoe may be peeled off, and when the shoe is integrally formed with the arm, a molding die is required and the manufacturing cost is increased. [0004] Therefore, the separately manufactured arm and shoe are
There is known a tensioner lever assembled and fixed without using an adhesive. The “chain guide rail provided with a synthetic resin shoe” according to Japanese Utility Model Publication No. 7-36201 has a structure in which the shoe is detachably attached to a shoe support member. That is, the end hook piece formed on the shoe is engaged with the chain running start end of the shoe support member, and the L-shaped side engaging piece formed on the shoe is engaged with and attached to the shoe support member. I have. [0005] As described above, the shoe is detachably attached to the shoe support member. Since the L-shaped side engaging pieces are formed on both sides of the shoe, the shoe can be attached. Notch grooves are formed on both sides of the shoe support member, L-shaped engaging pieces are fitted from the notch grooves, and the end hook pieces are engaged with the chain running start end by moving in the chain running direction. I have. However, the strength is reduced by forming the notch groove in the shoe support member. Therefore, an "L-shaped engagement piece is formed on one side surface, a ridge is provided on the other side surface, and a U-shaped end hook piece engaged with the chain running start end is formed. A structure for preventing the lifting of the shoe of the lever "is known (Utility Model Registration No. 2519476). [0006] By forming the protruding strip on the other side in this manner, the shoe can be easily attached and detached without providing a large cutout on the side of the arm. However, the end hook pieces that are only engaged with the chain running start end are misaligned when a force in the opposite direction to the chain running is applied, and sometimes the end hook pieces are moved from the chain running start end. It will come off. Such a phenomenon is caused by the above-mentioned actual fairness 7-3.
The problem also occurs in the case of the “chain guide rail provided with a synthetic resin shoe” according to No. 6201. As described above, the shoe attached to the arm such as the tensioner lever has the above-mentioned problems. The problem to be solved by the present invention is this problem, and provides a shoe mounting structure in which the mounting and removing of the shoe is easy, and the shoe is not displaced or detached. [0008] The shoe mounting structure according to the present invention can be easily mounted on and removed from the arm, and does not displace. Therefore,
An L-shaped engaging piece is formed on one side of the shoe extending in a curved manner, and a ridge is projected on the back surface (contact surface with the arm) of the shoe. The L-shaped engaging piece and the protruding strip may be formed continuously over a predetermined length, or may be separately provided at a plurality of locations. At the beginning of the chain, a protrusion projects from the back of the shoe. A notch groove for engaging the L-shaped engaging piece is provided on one arm, and a protruding strip protruding from the rear surface of the shoe is formed on the outer periphery of the arm by forming a hole or depression. It can be fitted and has a groove at the starting end of the chain where the projection fits. Therefore, the shoe attached to the arm does not come off or float due to the engagement of the L-shaped engaging piece and the protruding strip, and the L-shaped projection engages with the notch groove and the projection engages with the groove. , Positioning in the longitudinal direction is performed, and rattling is prevented. Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. FIG. 1 shows an embodiment of the present invention and shows a specific example of a chain tensioner lever. The tensioner lever consists of a curved arm 1 and a shoe 2,
Is mounted on the outer periphery of the arm 1 and has a detachable mounting structure so that if the shoe 2 is damaged due to wear or the like, it can be replaced. FIG. 2 shows a state in which the shoe 2 is detached from the arm 1. The arm 1 is made of an aluminum alloy or the like. In order to make the windows, elongated windows 4, 4,... Are provided. The outer peripheral surface 5 has a smooth curved surface, and notches 7, 7... Are formed on one side surface 6. Holes 8 and 8 are provided in the outer peripheral surface 5 and penetrate the windows 4 and 4, and a groove 9 is formed in the chain running start end. One shoe 2 is manufactured by molding rubber or resin or the like, and is smoothly curved so that it can fit into the outer peripheral surface 5 of the arm 1. Guides 11 and 11 stand upright on both sides of the outer peripheral surface 10 on which the chain runs, and a projection 12 protrudes to the back side at the starting point of the chain running. It is protruding. Further, on one side surface of the shoe 2, L-shaped engaging pieces 13, 13,... Are formed facing the back side. The rear surface of the shoe 2 is in contact with the outer peripheral surface 5 of the arm.
9 and the L-shaped engaging pieces 13, 13...
, And the ridges are fitted into the holes 8,8. FIG. 1 shows a state in which the shoe 2 is attached to the arm 1, and FIG.
FIG. 3 is an enlarged view of the A section. (C) shows a case where the shoe 2 is attached to the arm 1, (a) shows a case where the shoe 2 is detached, and (b) shows a case where the shoe 2 is detached.
2 shows a case where 2 is attached to the arm 1. A ridge 15 protrudes from the back surface 14 of the shoe 2.
5 has a right-angled triangle, and the side forming the L-shaped engagement piece 13 has a locking surface 16 which rises vertically from the back surface 14.
It has become. The protruding strip 15 fits into the hole 8 formed on the outer peripheral surface 5 of the arm 1, while the locking surface 16 is
The ridge 15 can be locked by contacting the inner surface of the ridge. When removing the shoe 2 from the arm 1, if a pointed tool is inserted into the opposite side of the L-shaped engaging piece 13 to remove the ridge 15 from the hole 8, Moves to one side of the L-shaped engagement and comes off. Conversely, when the shoe 2 is mounted on the arm 1, the L-shaped engaging pieces 13, 13,... Are fitted into the notch grooves 7, 7,. If it is pressed in the direction of the arrow in that state, the ridge 15 can be fitted into the hole 8. In this case, the protrusion 12 at the chain running start end is also fitted into the groove 9. As described above, in the shoe mounting structure according to the present invention, the L-shaped engaging piece formed on the side face of the shoe is engaged with the notch groove on the side face of the arm, and the projecting ridge piece projecting from the back face is formed. The protrusion is fitted into the groove on the outer peripheral surface of the arm and the protrusion at the chain running start end, and the following effects can be obtained. As described above, the L-shaped engaging piece provided on the shoe is engaged with the notch groove of the arm, and the protruding strip is fitted into the hole so as to be locked. It does not come off the arm and does not float off the arm. Of course,
The shoe cannot move to the side. On the other hand, by fitting the projection into the groove, it is possible to prevent the arm from moving in the longitudinal direction and rattling, thereby suppressing noise and preventing damage to the shoe. Further, although the attached shoe is not displaced, the attaching / detaching operation can be easily performed.
【図面の簡単な説明】
【図１】本発明のシュー取付け構造を示す実施例。
【図２】アームとシューを分離した状態。
【図３】図1のＡ―Ａ断面拡大図であり、シューの着脱
操作を示している。
【図４】従来のテンショナー装置。
【符号の説明】
１ アーム
２ シュー
３ 軸穴
４ 窓
５ 外周面
６ 側面
７ 切欠き溝
８ 穴
９ 溝
10 外周面
11 ガイド
12 突起部
13 Ｌ字状係合片
14 裏面
15 突条片
16 係止面BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an embodiment showing a shoe mounting structure of the present invention. FIG. 2 shows a state in which an arm and a shoe are separated. FIG. 3 is an enlarged cross-sectional view taken along the line AA of FIG. 1 and shows an operation of attaching and detaching a shoe. FIG. 4 shows a conventional tensioner device. [Description of Signs] 1 Arm 2 Shoe 3 Shaft hole 4 Window 5 Outer peripheral surface 6 Side surface 7 Notch groove 8 Hole 9 Groove 10 Outer peripheral surface 11 Guide 12 Projection 13 L-shaped engagement piece 14 Back surface 15 Projection strip 16 Stop face
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) F16H 7/00 - 7/24 F02B 67/06 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) F16H 7/ 00-7/24 F02B 67/06
Claims (1)
にシューを着脱可能に取付ける構造において、湾曲した
アームの片側面には切欠き溝を複数箇所に形成し、外周
面には複数の穴又は窪みを設けると共にチェーン走行始
端部には溝を有し、一方、シューの裏面をアーム外周面
に当設すると共に、片側面に形成した複数のＬ字状係合
片をアームの切欠き溝にそれぞれ係合し、また裏面には
上記Ｌ字状係合片が形成されている側を該裏面から垂直
に立ち上がる係止面として断面が直角三角形の突条片を
複数箇所に突出すると共に、この突条片をアーム外周面
の穴にそれぞれ嵌入・係止し、そしてチェーン走行始端
部に設けた突起部を溝に嵌合したことを特徴とするテン
ショナーレバー等におけるシューの取付け構造。(1) In a structure in which a shoe is detachably attached to an arm constituting a tensioner lever or the like, a cutout groove is formed at a plurality of locations on one side surface of a curved arm, and the outer periphery is formed. A plurality of holes or depressions are provided on the surface and a groove is provided at the chain running start end, while a plurality of L-shaped engaging pieces formed on one side while the back surface of the shoe is provided on the outer peripheral surface of the arm. Into the notch grooves on the arm, and on the back
The side on which the L-shaped engagement piece is formed is perpendicular to the back surface.
At the same time, projecting ridges with a right-angled triangular cross section are projected at a plurality of locations, and the ridges are fitted and locked in holes on the outer peripheral surface of the arm, respectively, and are provided at the chain running start end. A shoe mounting structure for a tensioner lever or the like, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31906299A JP3482445B2 (en) | 1999-11-10 | 1999-11-10 | Shoe mounting structure for tensioner lever, etc. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31906299A JP3482445B2 (en) | 1999-11-10 | 1999-11-10 | Shoe mounting structure for tensioner lever, etc. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001141004A JP2001141004A (en) | 2001-05-25 |
| JP3482445B2 true JP3482445B2 (en) | 2003-12-22 |
Family
ID=18106084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31906299A Expired - Lifetime JP3482445B2 (en) | 1999-11-10 | 1999-11-10 | Shoe mounting structure for tensioner lever, etc. |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3482445B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3336336B1 (en) * | 2001-08-22 | 2002-10-21 | 株式会社椿本チエイン | Tensioner lever for transmission |
| JP5233422B2 (en) * | 2008-06-04 | 2013-07-10 | Ｎｏｋ株式会社 | Positioning unit |
-
1999
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