JPH0122980Y2 - - Google Patents
Info
- Publication number
- JPH0122980Y2 JPH0122980Y2 JP13197084U JP13197084U JPH0122980Y2 JP H0122980 Y2 JPH0122980 Y2 JP H0122980Y2 JP 13197084 U JP13197084 U JP 13197084U JP 13197084 U JP13197084 U JP 13197084U JP H0122980 Y2 JPH0122980 Y2 JP H0122980Y2
- Authority
- JP
- Japan
- Prior art keywords
- seal
- lubricating oil
- hydraulic
- oil supply
- supply path
- 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
- 239000010687 lubricating oil Substances 0.000 claims description 41
- 238000005461 lubrication Methods 0.000 claims description 13
- 230000013011 mating Effects 0.000 claims description 5
- 230000001050 lubricating effect Effects 0.000 claims description 4
- 239000000314 lubricant Substances 0.000 claims 1
- 239000010720 hydraulic oil Substances 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
Landscapes
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、クラツチ部分を嵌脱させるための油
圧ピストンを具備する回転クラツチの回転軸のシ
ール部分のシール潤滑機構に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a seal lubrication mechanism for a seal portion of a rotary shaft of a rotary clutch, which is provided with a hydraulic piston for engaging and disengaging the clutch portion.
（従来技術）
第３図に図示するように、回転している原動軸
Ｂと従動軸Ｃの回転の伝達の一つの手段として、
摩擦板５と相手板６との圧接による摩擦力を利用
した回転クラツチが用いられている。上記摩擦板
５と相手板６との圧接には、しばしば作動油圧回
路３を介して油圧ポンプＰに接続された油圧ピス
トン４の突出動による圧接が用いられる。そし
て、かかる場合上記作動油圧回路３の回転軸のシ
ールＳ部分の作動油の漏れを利用して、シールリ
ング２等の上記シール部分Ｓの潤滑が行われてい
た。(Prior Art) As shown in FIG. 3, as one means of transmitting the rotation of the rotating driving shaft B and driven shaft C,
A rotating clutch is used that utilizes the frictional force caused by the pressure contact between the friction plate 5 and the mating plate 6. Pressure contact between the friction plate 5 and the mating plate 6 is often performed by a protruding movement of a hydraulic piston 4 connected to a hydraulic pump P via an operating hydraulic circuit 3. In such a case, the seal portion S such as the seal ring 2 is lubricated by utilizing the leakage of hydraulic oil from the seal S portion of the rotating shaft of the hydraulic hydraulic circuit 3.
（考案が解決しようとする課題）
しかし、上記潤滑は、クラツチ作動時、即ち油
圧ピストン４に圧油が作用している場合には、作
動油圧回路３に作動油が存在するため、上記シー
ル部分Ｓに潤滑が可能となるが、クラツチの非作
動時には切換弁Ｖ以降の作動油圧回路３に残存す
る作動油により潤滑が行われるため、残存する作
動油が消費されてしまうと潤滑が行われなくな
る。その結果、シールリング等の回転軸のシール
部分Ｓが摩耗するとともに、回転抵抗が増加する
等の問題が生じていた。(Problem to be solved by the invention) However, when the clutch is operated, that is, when pressure oil is acting on the hydraulic piston 4, hydraulic oil is present in the hydraulic circuit 3, so the above-mentioned seal part S can be lubricated, but when the clutch is not operating, the lubrication is performed by the hydraulic oil remaining in the hydraulic circuit 3 after the switching valve V, so if the remaining hydraulic oil is consumed, lubrication will no longer occur. . As a result, problems such as wear of the seal portion S of the rotating shaft such as a seal ring and an increase in rotational resistance have occurred.
本考案は、上記現況に鑑みなされたもので、回
転クラツチの作動しない場合にも、回転軸のシー
ル部分に潤滑油が供給されるような回転クラツチ
のシール潤滑機構を提供することを目的とする。 The present invention has been developed in view of the above-mentioned current situation, and its purpose is to provide a seal lubrication mechanism for a rotary clutch in which lubricating oil is supplied to the seal portion of the rotary shaft even when the rotary clutch is not operating. .
（問題を解決するための手段）
本考案にかかる回転クラツチのシール潤滑機構
は、摩擦板と相手板を油圧ピストンで圧接するこ
とにより回転を伝達する回転クラツチで、該油圧
ピストンを作動させるための作動油圧回路が固定
部から回転軸にわたつて形成され、該固定部と回
転軸の間に外部と隔壁するよう周設されたシール
部分を、上記油圧ピストン作動時においては該油
圧ピストンを作動させる作動油圧回路からの漏れ
を利用して潤滑をおこなうよう構成された回転ク
ラツチのシール潤滑機構において、
複数のシールリングにより構成される上記回転
軸のシール部分のシールリング間に、先端開口部
が臨み、後端で油圧源あるいは潤滑油供給源に接
続される潤滑油供給路を形成したことを特徴とす
る。(Means for Solving the Problem) The rotary clutch seal lubrication mechanism according to the present invention is a rotary clutch that transmits rotation by press-contacting a friction plate and a mating plate with a hydraulic piston. An operating hydraulic circuit is formed from the fixed part to the rotating shaft, and a seal part provided around the fixed part and the rotating shaft so as to be partitioned from the outside operates the hydraulic piston when the hydraulic piston is operated. In a rotary clutch seal lubrication mechanism configured to perform lubrication using leakage from a working hydraulic circuit, a tip opening faces between the seal rings of the seal portion of the rotary shaft, which is composed of a plurality of seal rings. , a lubricating oil supply path connected to a hydraulic pressure source or a lubricating oil supply source is formed at the rear end.
（作用）
しかして、上記構成よりなる本回転クラツチの
シール潤滑機構は、油圧ピストンの非作動時に
も、後端側で油圧源あるいは潤滑油供給源に接続
された上記潤滑油供給路の先端開口部から、回転
軸のシール部分のシールリング間に潤滑油が供給
され、回転軸のシール部分を潤滑するため、シー
ルリング等の回転シール部分が摩耗することもな
く、回転軸の回転抵抗の増加等も生じない。(Function) Therefore, the seal lubrication mechanism of the rotary clutch configured as described above is such that even when the hydraulic piston is not in operation, the tip of the lubricating oil supply path connected to the hydraulic pressure source or the lubricating oil supply source is opened at the rear end side. Since lubricating oil is supplied between the seal rings of the seal part of the rotary shaft and lubricates the seal part of the rotary shaft, the rotary seal parts such as the seal rings do not wear out, and the rotational resistance of the rotary shaft increases. etc. will not occur.
（実施例）
以下、本考案を図面を参照しながら実施例に基
づいてより具体的に説明する。(Examples) Hereinafter, the present invention will be described in more detail based on examples with reference to the drawings.
第１図は本実施例の構成を示すトランスミツシ
ヨンに設けられた回転クラツチ部分の側断面図で
ある。図において、１は潤滑油供給路、２，２
ａ，２ｂ，２ｃ，２ｄはシールリング、３は作動
油圧回路、４は作動油圧回路３の先端に設けられ
た油圧ピストン、５は原動軸Ｂ側に取着された摩
擦板、６は従動軸Ｃ側に取着された相手板、Ａは
固定部、Ｃは回転軸である従動軸である。 FIG. 1 is a side sectional view of a rotary clutch provided in a transmission showing the configuration of this embodiment. In the figure, 1 is a lubricating oil supply path, 2, 2
a, 2b, 2c, 2d are seal rings, 3 is a working hydraulic circuit, 4 is a hydraulic piston provided at the tip of the working hydraulic circuit 3, 5 is a friction plate attached to the driving shaft B side, 6 is a driven shaft A mating plate attached to the C side, A is a fixed part, and C is a driven shaft which is a rotating shaft.
そして、本実施例では、固定部Ａと従動軸Ｃの
間には、作動油の大気側への流出を阻止するシー
ルリング２が従動軸Ｃの支持部分Ｅの両端部に、
各二列挿着されている。また、上記二列に挿着さ
れたシールリング２ａと２ｂ，２ｃと２ｄの間に
は、各々潤滑油を供給する潤滑油供給路１の先端
開口部１ａ，１ｂが形成され、該潤滑油供給路１
はその後端で油圧源Ｄに接続されている。 In this embodiment, between the fixed part A and the driven shaft C, there are seal rings 2 at both ends of the support part E of the driven shaft C, which prevent the hydraulic oil from flowing out to the atmosphere.
Two rows are inserted in each row. Further, between the seal rings 2a and 2b, 2c and 2d inserted in the two rows, tip openings 1a and 1b of the lubricating oil supply path 1 for supplying lubricating oil are formed, respectively. Road 1
is connected to a hydraulic power source D at its rear end.
しかして、上記構成よりなる潤滑手段は回転ク
ラツチの非作動時に以下の如く作用する。即ち、
回転クラツチの非作動時に、切換弁Ｖが「閉」に
なり作動油圧回路３に作動油が存在しなくなつた
場合においても、潤滑油供給路１の先端開口部１
ａ，１ｂより両端部のシールリング２ａと２ｂ
間、２ｃと２ｄ間に潤滑油が供給される。従つ
て、回転クラツチの非作動時においても、上記潤
滑油供給路よりシールリング等の回転シール部分
に潤滑油が常時供給されるため、シールリング等
回転軸のシール部分で摩耗することもなく、また
潤滑油切れにより回転抵抗が増加することもな
い。 The lubricating means constructed as described above operates as follows when the rotary clutch is not operated. That is,
Even if the switching valve V is "closed" and there is no hydraulic oil in the hydraulic circuit 3 when the rotary clutch is not operated, the tip opening 1 of the lubricating oil supply path 1
Seal rings 2a and 2b at both ends from a and 1b
During this time, lubricating oil is supplied between 2c and 2d. Therefore, even when the rotating clutch is not in operation, lubricating oil is constantly supplied to the rotating seal parts such as the seal ring from the lubricating oil supply path, so that there is no wear on the seal parts of the rotating shaft such as the seal ring. Furthermore, rotational resistance does not increase due to lack of lubricating oil.
次ぎに、他の実施例について第２図を参照しな
がら説明する。第２図は本実施例の構成を示すト
ランスミツシヨンに設けられた回転クラツチ部分
の側断面図である。図において、第１図と同一の
構成部品については同一の記号を付す。潤滑油供
給路１は、クラツチ部及び軸受等の潤滑油供給路
も兼ね、従動軸の軸心部に形成され、そこより半
径方向外周に向い、先端開口部１ａ，１ｂを有す
る分岐路が形成されている。また、上述の実施例
と同様に固定部Ａと従動軸Ｃの間には、作動油の
大気側への流出を阻止するシールリング２，２
ａ，２ｂ，２ｃ，２ｄが従動軸Ｃの支持部分Ｅの
両端部に、各二列挿着されている。そして、上記
両端部のシールリング２ａと２ｂ間、２ｃと２ｄ
間には、上記潤滑油供給路１を経て該潤滑油供給
路１の先端開口部１ａ，１ｂから潤滑油が供給さ
れるよう構成されている。そして、上記潤滑油供
給路１の後端側は潤滑油供給源Ｄに接続され、潤
滑油が供給される。 Next, another embodiment will be described with reference to FIG. FIG. 2 is a side sectional view of a rotary clutch provided in a transmission showing the configuration of this embodiment. In the figure, the same symbols are attached to the same components as in FIG. 1. The lubricating oil supply path 1 also serves as a lubricating oil supply path for the clutch portion, bearings, etc., and is formed at the axial center of the driven shaft, from which a branch path is formed that faces toward the outer circumference in the radial direction and has tip openings 1a and 1b. has been done. Further, as in the above embodiment, seal rings 2, 2 are provided between the fixed part A and the driven shaft C to prevent the hydraulic oil from flowing out to the atmosphere.
a, 2b, 2c, and 2d are inserted in two rows each at both ends of the support portion E of the driven shaft C. And between the seal rings 2a and 2b at both ends, 2c and 2d
In between, lubricating oil is supplied through the lubricating oil supply path 1 from the tip openings 1a and 1b of the lubricating oil supply path 1. The rear end side of the lubricating oil supply path 1 is connected to a lubricating oil supply source D, and lubricating oil is supplied thereto.
しかして、上記構成よりなる潤滑手段は回転ク
ラツチの非作動時に以下の如く作用する。即ち、
回転クラツチの非作動時に、切換弁Ｖが「閉」に
なり作動油圧回路３に作動油が存在しなくなつた
場合においても、潤滑油供給路１の分岐部より両
端部のシールリング２ａと２ｂ間、２ｃと２ｄ間
に臨む先端開口部１ａ，１ｂから、従動軸Ｃの回
転による遠心力により、従動軸Ｃが回転をしてい
る限り潤滑油が常に供給される。従つて、回転ク
ラツチの非作動時においても、上記潤滑油供給路
よりシールリング等の回転シール部分に潤滑油が
常時供給されるため、シールリング等回転軸のシ
ール部分で摩耗することもなく、また潤滑油切れ
により回転抵抗が増加することもない。 The lubricating means constructed as described above operates as follows when the rotary clutch is not operated. That is,
Even if the switching valve V is "closed" and there is no hydraulic oil in the hydraulic circuit 3 when the rotary clutch is not operated, the seal rings 2a and 2b at both ends are removed from the branch of the lubricating oil supply path 1. As long as the driven shaft C is rotating, lubricating oil is constantly supplied from the tip openings 1a and 1b facing between the center and between 2c and 2d due to the centrifugal force caused by the rotation of the driven shaft C. Therefore, even when the rotating clutch is not in operation, lubricating oil is constantly supplied to the rotating seal parts such as the seal ring from the lubricating oil supply path, so that there is no wear on the seal parts of the rotating shaft such as the seal ring. Furthermore, rotational resistance does not increase due to lack of lubricating oil.
尚、上記実施例の油圧源としては、油圧ポンプ
を別途設けてもよく、あるいは他の油圧回路、例
えば上記作動油圧回路の切換弁より油圧ポンプ側
から分岐させて油圧源として利用してもよくまた
作動油等の冷却回路等から分岐させて供給を受け
てもよい。 As the hydraulic power source in the above embodiment, a hydraulic pump may be provided separately, or another hydraulic circuit, for example, a branch from the hydraulic pump side from the switching valve of the operating hydraulic circuit may be used as the hydraulic source. Alternatively, the supply may be branched from a cooling circuit for hydraulic oil or the like.
また、上記実施例においては、潤滑油供給路よ
り潤滑油が常に（後者の実施例では、従動軸が回
転している限り常に）供給されるよう構成されて
いるが、効率的な潤滑を行うため、第１実施例の
場合、作動油圧回路にセンサー等を設けて作動油
圧回路に作動油が存在しないときのみ、上記潤滑
油供給回路に潤滑油を供給するよう、油圧源ある
いは油圧源と潤滑供給回路の間に開閉弁等を設け
て制御してもよい。 Furthermore, in the above embodiment, the lubricating oil is always supplied from the lubricating oil supply path (in the latter embodiment, as long as the driven shaft is rotating), but efficient lubrication is possible. Therefore, in the case of the first embodiment, a sensor or the like is provided in the hydraulic pressure circuit to supply lubricating oil to the lubricating oil supply circuit only when there is no hydraulic oil in the hydraulic circuit, so that the hydraulic power source or the hydraulic source and the lubricating oil are connected to each other. Control may be provided by providing an on-off valve or the like between the supply circuits.
（考案の効果）
以上説明したように、本考案にかかる潤滑手段
を回転クラツチの回転シール部分に設けることに
より、クラツチの非作動時にも、上記シールリン
グ等の回転シール部分に潤滑油を常に供給できる
ため、シールリング等の回転シール部分が摩耗す
ることもなく、また回転抵抗が増加することもな
い。(Effects of the invention) As explained above, by providing the lubricating means according to the invention on the rotary seal portion of the rotary clutch, lubricating oil is constantly supplied to the rotary seal portion such as the seal ring even when the clutch is not operated. Therefore, the rotary seal parts such as the seal ring will not wear out, and the rotational resistance will not increase.
従つて、回転クラツチ部分の寿命、オーバーホ
ール時間等が著しく延び、その結果かかる回転ク
ラツチを採用した作業車等の稼動時間を飛躍的に
増大させることが可能となる。特に、整備施設か
ら遠く離れた所で使用されることが多い作業車に
とつて、オーバーホール時間が延びる効果は非常
に大きい。 Therefore, the life span and overhaul time of the rotary clutch portion are significantly extended, and as a result, it becomes possible to dramatically increase the operating time of a working vehicle or the like employing such a rotary clutch. In particular, for work vehicles that are often used far away from maintenance facilities, the effect of extending the overhaul time is very large.
第１図は本考案にかかる一実施例のトランスミ
ツシヨンに設けられた回転クラツチ部分の側断面
図、第２図は本考案にかかる他の実施例の回転ク
ラツチ部分の側断面図、第３図は従来のトランス
ミツシヨンに設けられた回転クラツチ部分の側断
面図である。
Ａ……固定部、Ｃ……回転軸（従動軸）、Ｄ…
…油圧源（潤滑油供給源）、１……潤滑油供給路、
１ａ，１ｂ……先端開口部、２，２ａ，２ｂ，２
ｃ，２ｄ……シールリング、３……作動油圧回
路、４……油圧ピストン、５……摩擦板、６……
相手板。
FIG. 1 is a side sectional view of a rotary clutch portion provided in a transmission according to an embodiment of the present invention, FIG. 2 is a side sectional view of a rotary clutch portion of another embodiment according to the present invention, and FIG. The figure is a side sectional view of a rotary clutch portion provided in a conventional transmission. A...Fixed part, C...Rotating shaft (driven shaft), D...
...Hydraulic oil source (lubricating oil supply source), 1... Lubricating oil supply path,
1a, 1b...Tip opening, 2, 2a, 2b, 2
c, 2d... Seal ring, 3... Operating hydraulic circuit, 4... Hydraulic piston, 5... Friction plate, 6...
Opponent board.
Claims (1)
とにより回転を伝達する回転クラツチで、該油
圧ピストンを作動させるための作動油圧回路が
固定部から回転軸にわたつて形成され、該固定
部と回転軸の間に外部と隔壁するよう周設され
たシール部分を、上記油圧ピストン作動時にお
いては該油圧ピストンを作動させる作動油圧回
路からの漏れを利用して潤滑をおこなうよう構
成された回転クラツチのシール潤滑機構におい
て、 複数のシールリングにより構成される上記回
転軸のシール部分のシールリング間に、先端開
口部が臨み、後端で油圧源あるいは潤滑油供給
源に接続される潤滑油供給路を形成したことを
特徴とする回転クラツチのシール潤滑機構。 (2) 前記潤滑油供給路が、前記回転軸を支持する
固定部分に形成され、その後端が油圧源に接続
されていることを特徴とする実用新案登録請求
の範囲第１項の回転クラツチのシール潤滑機
構。 (3) 前記潤滑油供給路が、前記回転軸内に形成さ
れ、該回転軸の回転による遠心作用を利用し
て、後端で潤滑油供給源に接続された該潤滑油
供給路の先端開口部から、潤滑油を前記シール
部分に供給するよう構成されていることを特徴
とする実用新案登録請求の範囲第１項の回転ク
ラツチのシール潤滑機構。[Scope of Claim for Utility Model Registration] (1) A rotary clutch that transmits rotation by press-contacting a friction plate and a mating plate with a hydraulic piston, in which a hydraulic circuit for operating the hydraulic piston is connected from a fixed part to a rotating shaft. When the hydraulic piston is actuated, a seal portion formed across the fixed portion and the rotating shaft is provided around the outside so as to be partitioned from the outside. In a rotary clutch seal lubrication mechanism configured to perform lubrication, a tip opening faces between the seal rings of the seal portion of the rotary shaft, which is composed of a plurality of seal rings, and a hydraulic source or lubricant supply is provided at the rear end. A seal lubrication mechanism for a rotary clutch, characterized in that a lubricating oil supply path connected to a power source is formed. (2) The rotating clutch according to claim 1, wherein the lubricating oil supply path is formed in a fixed part that supports the rotating shaft, and the rear end thereof is connected to a hydraulic power source. Seal lubrication mechanism. (3) The lubricating oil supply path is formed within the rotating shaft, and a tip opening of the lubricating oil supply path is connected to a lubricating oil supply source at a rear end by utilizing centrifugal action due to rotation of the rotating shaft. A seal lubricating mechanism for a rotary clutch according to claim 1, characterized in that the lubricating oil is supplied from the seal portion to the seal portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13197084U JPS6145636U (en) | 1984-08-29 | 1984-08-29 | Rotating clutch seal lubrication mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13197084U JPS6145636U (en) | 1984-08-29 | 1984-08-29 | Rotating clutch seal lubrication mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6145636U JPS6145636U (en) | 1986-03-26 |
| JPH0122980Y2 true JPH0122980Y2 (en) | 1989-07-13 |
Family
ID=30690538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13197084U Granted JPS6145636U (en) | 1984-08-29 | 1984-08-29 | Rotating clutch seal lubrication mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6145636U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9719486B2 (en) * | 2011-08-30 | 2017-08-01 | Toyota Jidosha Kabushiki Kaisha | Seal device for hydraulic circuit |
-
1984
- 1984-08-29 JP JP13197084U patent/JPS6145636U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6145636U (en) | 1986-03-26 |
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