JPH0144851Y2 - - Google Patents
Info
- Publication number
- JPH0144851Y2 JPH0144851Y2 JP1986060982U JP6098286U JPH0144851Y2 JP H0144851 Y2 JPH0144851 Y2 JP H0144851Y2 JP 1986060982 U JP1986060982 U JP 1986060982U JP 6098286 U JP6098286 U JP 6098286U JP H0144851 Y2 JPH0144851 Y2 JP H0144851Y2
- Authority
- JP
- Japan
- Prior art keywords
- piston
- chamber
- chain
- cylinder
- oil
- 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
Links
- 238000004891 communication Methods 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 32
- 239000010720 hydraulic oil Substances 0.000 description 9
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、動力を伝達するためのチエーンまた
は伝動用ベルト若しくはロープ（以下チエーンと
総称す）に張りを与える緊張装置に関するもので
ある。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a tensioning device for applying tension to a chain, a power transmission belt, or a rope (hereinafter collectively referred to as a chain) for transmitting power.
従来の緊張装置においてチエーンの張りを与
え、振動を吸収するものとして、油圧式緊張装置
即ち油圧テンシヨナが用いられている。例えば第
３図に示すように内燃機関に備えられた例につい
て説明すると、機関の駆動チエーンＡの弛み側に
設けたもので、油圧テンシヨナは、シリンダ２
に、チエーン摺動部１1を持つピストン１が組付
けられ、ピストン１とテンシヨナ本体には、圧縮
スプリング３でピストン１がシリンダ２から飛び
出る力を持たせピストン室１2と油圧流通路５間
には逆止弁４が設置してある。
In conventional tensioning devices, hydraulic tensioning devices, or hydraulic tensioners, are used to tension the chain and absorb vibrations. For example, as shown in Fig. 3, an example of an internal combustion engine equipped with this tensioner is installed on the slack side of the drive chain A of the engine, and the hydraulic tensioner is installed on the slack side of the drive chain A of the engine.
A piston 1 having a chain sliding part 11 is assembled, and a compression spring 3 applies a force to the piston 1 and the tensioner body to cause the piston 1 to pop out of the cylinder 2, thereby creating a gap between the piston chamber 12 and the hydraulic flow path 5. A check valve 4 is installed.
そして機関運転中は逆止弁４を通して得られた
機関からの油圧力と、圧縮スプリング３の力で相
互に力をバランスさせ、チエーンＡを最適力で張
つている。 While the engine is in operation, the hydraulic pressure from the engine obtained through the check valve 4 and the force of the compression spring 3 are used to balance the forces with each other, thereby tensioning the chain A with an optimum force.
しかしながら、このような従来の油圧テンシヨ
ナにあつては、チエーンＡが振れた場合にテンシ
ヨナを押し戻す力に対して抵抗する力を、内蔵し
たスプリング３と密封された油の圧縮力とで受け
持ち、油が摺動部ピストンとシリンダのスキマか
ら洩れ油を連続して補給しなければならない構造
となつていたため、取付けられる側に油補給用の
油通路を必要とするほか、その油通路形成上テン
シヨナ取付位置が制限されるし洩れ油で作業環境
も悪化する欠点があつた。
However, in such conventional hydraulic tensioners, the force that resists the force that pushes back the tensioner when the chain A swings is handled by the built-in spring 3 and the compressive force of the sealed oil. Since the structure required continuous replenishment of oil that leaked from the gap between the sliding piston and cylinder, an oil passage was required for oil replenishment on the side where it was installed, and the tensioner installation was difficult due to the formation of the oil passage. The drawbacks were that the position was restricted and the working environment deteriorated due to leaking oil.
本考案は、この従来の欠点を排除しようとする
もので、摺動部より油を外部に洩らさずに作動部
に回収し再び作動油として有効に使用する油圧式
チエーン緊張装置を提供することを目的としたも
のである。 The present invention aims to eliminate this conventional drawback, and provides a hydraulic chain tensioning device that collects oil from the sliding part into the operating part without leaking it to the outside and uses it effectively as hydraulic oil again. It is intended for this purpose.
〔問題点を解決するための手段〕
本発明は、動力を伝達するチエーン又はベルト
に、張りを与え、振動を吸収する油圧式チエーン
緊張装置において、チエーンＡの摺動部１1を持
つピストン１が中空円筒部を持ち、その中空部に
連なる連通孔１１を周壁に備えてピストン室１2
としたものであつて、該ピストン室１2内にスプ
リング３を嵌挿して摺動自在にシリンダ２に嵌合
装備し、該シリンダ２に逆止弁４のある流通路５
を設けた隔壁６で油戻し室７とピストン室１2と
を連通して備え、このピストン室１2と油戻し室
７とに循環連通した戻し通路８を設け、該戻し通
路８の中途に弾性可変容積貯溜室９を可撓性ブー
ツ９1または可撓盲板１０で密封形成し、この可
変容積貯留室９に前記ピストン１の連通孔１１を
連通又は遮断しうるように備えたことを特徴とす
るチエーン等緊張装置である。[Means for Solving the Problems] The present invention provides a hydraulic chain tensioning device that applies tension to a chain or belt that transmits power and absorbs vibrations . has a hollow cylindrical part, and the peripheral wall is provided with a communication hole 11 that connects to the hollow part, thereby forming a piston chamber 1 2
A spring 3 is fitted into the piston chamber 12 and slidably fitted to the cylinder 2, and the cylinder 2 has a flow passage 5 with a check valve 4.
The oil return chamber 7 and the piston chamber 1 2 are communicated with each other by a partition wall 6 provided with the oil return chamber 1 2 . The elastic variable volume storage chamber 9 is sealed with a flexible boot 91 or a flexible blind plate 10, and the variable volume storage chamber 9 is provided with the communication hole 11 of the piston 1 so as to be able to communicate with or block it. This is a unique chain tensioning device.
本考案の実施例を内然機関に備えられた例で説
明すると、チエーンＡに当接するパツドなどの摺
動部１1を接着又は焼付などにより取付けられて
持つピストン１がシリンダ２に摺動可能に嵌合し
ている。このシリンダ２中でピストン１との間に
圧縮スプリング３が介在され、ピストン１をシリ
ンダ２内から押出す方向にセツトされている。ま
たシリンダ２内には逆止弁４のある流通路５を設
けた隔壁６でピストン室１2と油戻し室７とを区
画してあり、シリンダ２中に充填された作動油を
油戻し室７からピストン室１2へは抵抗なく流通
させ逆方向には抵抗を持つて作動する逆止弁４で
調整できるようにしてある。
To explain the embodiment of the present invention using an example provided in an internal engine, a piston 1 which has a sliding part 11 such as a pad that contacts a chain A and is attached by adhesive or baking etc. can slide into a cylinder 2. is fitted. A compression spring 3 is interposed between the cylinder 2 and the piston 1, and is set in a direction to push the piston 1 out of the cylinder 2. Inside the cylinder 2, a partition wall 6 having a flow path 5 with a check valve 4 separates the piston chamber 12 from the oil return chamber 7, and the hydraulic oil filled in the cylinder 2 is transferred to the oil return chamber. 7 to the piston chamber 12 without any resistance, and can be adjusted in the opposite direction by a check valve 4 which operates with resistance.
また前記ピストン１は中空円筒部を持ち、その
中空部に連なる連通孔１１を周壁に備えてピスト
ン室１2とし前記スプリング３を嵌挿して摺動自
在にシリンダ２中に嵌合装備されているが、この
ピストン１とシリンダ２とにシール状態下で固定
された弾性膜などの可撓性ブーツ９1で弾性可変
容積貯溜室９が密封構造で構成されていてピスト
ン室１2と油戻し室７とに循環連通した戻し通路
８で作動油が循環できるようになつている。 Further, the piston 1 has a hollow cylindrical portion, and has a communication hole 11 connected to the hollow portion in the peripheral wall to form a piston chamber 12 , and the spring 3 is fitted into the cylinder 2 so as to be slidably fitted therein. However, the elastic variable volume storage chamber 9 is configured in a sealed structure with a flexible boot 91 such as an elastic membrane fixed to the piston 1 and cylinder 2 in a sealed state, and the piston chamber 12 and the oil return chamber are sealed. Hydraulic oil can be circulated through a return passage 8 which is in circulation communication with 7.
さらに前記油戻し室７はシリンダ２の他端面に
嵌着した盲板１０で密封構造に仕切られている
が、該盲板１０を可撓性の弾性板を用いて弾性可
変容積貯溜室９に兼用することも可能である。こ
の場合前記可撓性ブーツ９1は省略することがで
きる。 Further, the oil return chamber 7 is partitioned into a sealed structure by a blind plate 10 fitted to the other end surface of the cylinder 2, and the blind plate 10 is connected to an elastic variable volume storage chamber 9 using a flexible elastic plate. It is also possible to use it for both purposes. In this case, the flexible boot 9 1 can be omitted.
なお戻し通路８はシリンダ２に設けられ第１図
例では油戻し室７とブーツ９1で形成された可変
容積貯溜室９に連通させピストン１とシリンダ２
との嵌合隙間から洩れる油の循環回路を構成して
ある。 The return passage 8 is provided in the cylinder 2 and communicates with a variable volume storage chamber 9 formed by the oil return chamber 7 and the boot 91 in the example shown in FIG.
It forms a circulation circuit for oil that leaks from the fitting gap between the two.
第２図の具体例では前記盲板１０を弾性可動板
とし油戻し室７に連通した戻し通路８はピストン
１とシリンダ２との嵌合隙間に開口させ連通孔１
１からの油循環回路を構成してあり、戻し通路８
の中途にある前記油戻し室７が弾性可変容積貯溜
室となるようにしたものである。この場合、前記
シリンダ２にオイルシール１６を付設し、ピスト
ン１とシリンダ２の油の洩れを防いでいる。又戻
し室７とピストン１とシリンダ２との隙間に連通
する戻し通路８の端部はシリンダ２の円周に“ヘ
コミ”形状を持たせている。 In the specific example shown in FIG. 2, the blind plate 10 is an elastic movable plate, and the return passage 8 communicating with the oil return chamber 7 is opened in the fitting gap between the piston 1 and the cylinder 2, and the communication hole 1
An oil circulation circuit from 1 is constructed, and a return passage 8
The oil return chamber 7 located in the middle of the oil return chamber 7 serves as an elastic variable volume storage chamber. In this case, an oil seal 16 is attached to the cylinder 2 to prevent oil from leaking between the piston 1 and the cylinder 2. Further, the end of the return passage 8 communicating with the gap between the return chamber 7, the piston 1, and the cylinder 2 has a "dent" shape on the circumference of the cylinder 2.
図中１２は盲栓で戻し通路８に備えられる。１
３は止め部でシリンダ２をボルトなどを用いて機
器類に固定するためのもので止め穴を有してい
る。１４は弁バネ、１５は弁籠である。 In the figure, 12 is a blind plug provided in the return passage 8. 1
Reference numeral 3 denotes a stop portion for fixing the cylinder 2 to equipment using bolts or the like, and has a stop hole. 14 is a valve spring, and 15 is a valve cage.
しかして、チエーンＡを緊張する際に前記ピス
トン１は圧縮スプリング３により、チエーンＡに
押しつけられチエーンに規定の張力を与えてい
る。チエーンＡが振動しピストン１をシリンダ２
へ押し込む力が発生すると逆止弁４が作用し逆止
弁４によりピストン１の間に密封された作動油に
高圧が発生し、ピストン室１2に作動油を密封さ
せてチエーンのピストン１を押込む力に抵抗する
と共に、ピストン１とシリンダ２との嵌合部は圧
力を受けて必然的に油が洩れ、洩れた油は弾性可
変容積貯溜室９に溜る。この状態は、ピストン室
１2の体積が少なくなつた状態であり、ピストン
１はチエーンの力を受け寄るため、チエーンＡと
パツドの摺動部１1の振れが生じるスキマができ
る。 When tensioning the chain A, the piston 1 is pressed against the chain A by the compression spring 3, thereby applying a specified tension to the chain. Chain A vibrates and moves piston 1 to cylinder 2.
When a pushing force is generated, the check valve 4 acts, and the check valve 4 generates high pressure in the hydraulic oil sealed between the pistons 1, sealing the hydraulic oil in the piston chamber 12 , and pushing the piston 1 of the chain. While resisting the pushing force, the fitting portion between the piston 1 and the cylinder 2 is under pressure and oil inevitably leaks, and the leaked oil is collected in the elastic variable volume storage chamber 9. In this state, the volume of the piston chamber 12 is reduced, and since the piston 1 receives the force of the chain, a gap is created in which the sliding portion 11 of the chain A and the pad swings.
またチエーンＡからピストン１が離れる方向に
振動すると、ピストン１は圧縮スプリング３によ
りチエーンＡに当るまで移動する。この時ピスト
ン１とシリンダ２とで形成され空間には弾性可変
容積貯溜室９から戻し通路８、油戻し室７を経て
逆止弁４のある流通路５から作動油が補給され、
チエーンＡを最適張力で張ることが可能となる。 Further, when the piston 1 vibrates in a direction away from the chain A, the piston 1 is moved by the compression spring 3 until it hits the chain A. At this time, the space formed by the piston 1 and the cylinder 2 is replenished with hydraulic oil from the elastic variable volume storage chamber 9 via the return passage 8 and the oil return chamber 7, and from the flow passage 5 where the check valve 4 is located.
It becomes possible to tension chain A with the optimum tension.
〔考案の効果〕
本考案は、ピストン１が中空円筒部を持ち、そ
の中空部に連なる連通孔１１を周壁に備えてピス
トン室１2としたものであつて、該ピストン室１2
内にスプリング３を嵌挿して摺動自在にシリンダ
２に嵌合装備し、該シリンダ２に逆止弁４のある
流通路５を設けた隔壁６で油戻し室７とピストン
室１2とを連通して備え、このピストン室１2と油
戻し室７とに循環連通した戻し通路８を設け、該
戻し通路８の中途に弾性可変容積貯溜室９を可撓
性ブーツ９1または可撓盲板１０で密封形成し、
この可変容積貯留室９に前記ピストン１の連通孔
１１を連通又は遮断しうるように備えたことで、
連通孔により油戻しができ、温度上昇による異常
圧力の発生をも防ぎ、摺動部の異常摩耗や破損を
も防止できるし、可撓容積貯留室の形成も簡単に
付設することにより、チエーンから受ける力を用
いて作動油を作動させ、ピストンとシリンダのス
キマから洩れる油を回収できることとなり外部か
ら作動油を補給する必要がなく機器側に設ける油
補給用の通路を廃止でき、作動油の補給位置に制
約されないので緊張装置の取付位置を自由に選択
することが可能となり装着も簡単で油洩れもなく
保守保安上も簡易となる実用上の効果がある。[Effects of the invention] In the present invention, the piston 1 has a hollow cylindrical part, and the peripheral wall is provided with a communicating hole 11 connected to the hollow part to form a piston chamber 1 2 .
The oil return chamber 7 and the piston chamber 12 are connected by a partition wall 6 in which a spring 3 is inserted and slidably fitted into the cylinder 2, and a flow passage 5 with a check valve 4 is provided in the cylinder 2 . A return passage 8 is provided in communication with the piston chamber 1 2 and the oil return chamber 7, and an elastic variable volume storage chamber 9 is provided in the middle of the return passage 8 with a flexible boot 9 1 or a flexible blind. Formed in a sealed manner with a plate 10,
By providing this variable volume storage chamber 9 with the communication hole 11 of the piston 1 so as to be able to communicate with or block it,
The communication hole allows oil to be returned, prevents the generation of abnormal pressure due to temperature rise, and prevents abnormal wear and damage on the sliding parts.Flexible volume storage chambers can also be easily installed, allowing oil to be removed from the chain. The received force is used to operate the hydraulic oil, and the oil leaking from the gap between the piston and cylinder can be collected, eliminating the need to replenish hydraulic oil from the outside and eliminating the oil replenishment passage provided on the equipment side, making it possible to replenish hydraulic oil. Since it is not restricted by the position, it is possible to freely select the mounting position of the tensioning device, and there are practical effects such as easy mounting, no oil leakage, and easy maintenance and security.
第１図は本考案の実施例の縦断面図、第２図は
他の実施例の縦断面図、第３図は従来例の縦断面
図である。
１……ピストン、１1……摺動部、１2……ピス
トン室、２……シリンダ、３……圧縮スプリン
グ、４……逆止弁、５……流通路、６……隔壁、
７……油戻し室、８……戻し通路、９……可変容
積貯溜室、９1……ブーツ、１０……盲板、１１
……連通孔、１３……止め部、１４……弁バネ。
FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of another embodiment, and FIG. 3 is a longitudinal sectional view of a conventional example. DESCRIPTION OF SYMBOLS 1... Piston, 1 1 ... Sliding part, 1 2 ... Piston chamber, 2... Cylinder, 3... Compression spring, 4... Check valve, 5... Flow path, 6... Partition wall,
7...Oil return chamber, 8...Return passage, 9...Variable volume storage chamber, 9 1 ...Boot, 10...Blind plate, 11
...Communication hole, 13...Stopping portion, 14...Valve spring.
Claims (1)
与え、振動を吸収する油圧式チエーン緊張装置に
おいて、チエーンＡの摺動部１1を持つピストン
１が中空円筒部を持ち、その中空部に連なる連通
孔１１を周壁に備えてピストン室１2としたもの
であつて、該ピストン室１2内にスプリング３を
嵌挿して摺動自在にシリンダ２に嵌合装備し、該
シリンダ２に逆止弁４のある流通路５を設けた隔
壁６で油戻し室７とピストン室１2とを連通して
備え、このピストン室１2と油戻し室７とに循環
連通した戻し通路８を設け、該戻し通路８の中途
に弾性可変容積貯溜室９を可撓性ブーツ９1また
は可撓盲板１０で密封形成し、この可変容積貯留
室９に前記ピストン１の連通孔１１を連通又は遮
断しうるように備えたことを特徴とするチエーン
等緊張装置。 In a hydraulic chain tensioning device that applies tension to a chain or belt that transmits power and absorbs vibrations, a piston 1 having a sliding part 11 of a chain A has a hollow cylindrical part, and a communicating hole is connected to the hollow part. 11 is provided on the peripheral wall to form a piston chamber 1 2 , a spring 3 is fitted into the piston chamber 1 2 and slidably fitted into the cylinder 2 , and a check valve 4 is provided in the cylinder 2 . The oil return chamber 7 and the piston chamber 12 are connected to each other by a partition wall 6 provided with a flow passage 5, and a return passage 8 is provided in circulation communication between the piston chamber 12 and the oil return chamber 7. An elastic variable volume storage chamber 9 is hermetically formed in the middle of the passage 8 with a flexible boot 9 1 or a flexible blind plate 10 so that the communication hole 11 of the piston 1 can be communicated with or blocked from the variable volume storage chamber 9. A chain tensioning device characterized by being prepared for.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986060982U JPH0144851Y2 (en) | 1986-04-24 | 1986-04-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986060982U JPH0144851Y2 (en) | 1986-04-24 | 1986-04-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62172846U JPS62172846U (en) | 1987-11-02 |
| JPH0144851Y2 true JPH0144851Y2 (en) | 1989-12-25 |
Family
ID=30893895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986060982U Expired JPH0144851Y2 (en) | 1986-04-24 | 1986-04-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0144851Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS607444B2 (en) * | 1976-10-25 | 1985-02-25 | 三菱電機株式会社 | automatic driving device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS607444U (en) * | 1983-06-27 | 1985-01-19 | 株式会社椿本チエイン | chain tension device |
-
1986
- 1986-04-24 JP JP1986060982U patent/JPH0144851Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS607444B2 (en) * | 1976-10-25 | 1985-02-25 | 三菱電機株式会社 | automatic driving device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62172846U (en) | 1987-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5352159A (en) | Chain tensioner with oil reservoir | |
| US7070528B2 (en) | Hydraulic tensioner lifter | |
| JPS6158700B2 (en) | ||
| JPH08285018A (en) | Liquid-operated tensioner | |
| JP3054068B2 (en) | Hydraulic tensioner device | |
| US5167402A (en) | Hydraulic pressure apparatus with air scavenging | |
| US3521608A (en) | Self-contained hydraulic valve lifter | |
| GB2345112A (en) | Hydraulic chain tensioner having a gas-purging orifice | |
| US4240531A (en) | Low-wear shock absorber | |
| JP2019184058A (en) | Sealed hydraulic tensioner | |
| JPH1122791A (en) | Hydraulic chain tensioner | |
| JPH09177907A (en) | Hydraulic pushing up tensioner | |
| CA2281029A1 (en) | Damper valve for hydraulic power steering device | |
| JPH0144851Y2 (en) | ||
| US4840160A (en) | Valve control device | |
| JP2001165251A (en) | Hydraulic auto-tensioner and tension adjustment device for chain | |
| CN110410444B (en) | Active impact receiving buffer device and impact equipment | |
| EP1294632B1 (en) | Holding brake for an elevator | |
| US4986404A (en) | Hydraulic clutch releasing means | |
| CN109863327B (en) | Valve group | |
| WO2010044520A1 (en) | Hydraulic auto-tensioner for vehicle | |
| JPS6314224B2 (en) | ||
| JP2003139206A (en) | Hydraulic belt tensioner | |
| SU1043385A1 (en) | Shock-absorber | |
| JP5100501B2 (en) | Sealed hydraulic tappet for engine |