JPH01269727A - Sealing device for rotary joint of air clutch - Google Patents

Sealing device for rotary joint of air clutch

Info

Publication number
JPH01269727A
JPH01269727A JP63096374A JP9637488A JPH01269727A JP H01269727 A JPH01269727 A JP H01269727A JP 63096374 A JP63096374 A JP 63096374A JP 9637488 A JP9637488 A JP 9637488A JP H01269727 A JPH01269727 A JP H01269727A
Authority
JP
Japan
Prior art keywords
seal
air
clutch
clutch cover
chamber
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.)
Pending
Application number
JP63096374A
Other languages
Japanese (ja)
Inventor
Tamio Nagano
長野 民男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Exedy Corp
Original Assignee
Daikin Manufacturing Co Ltd
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.)
Filing date
Publication date
Application filed by Daikin Manufacturing Co Ltd filed Critical Daikin Manufacturing Co Ltd
Priority to JP63096374A priority Critical patent/JPH01269727A/en
Publication of JPH01269727A publication Critical patent/JPH01269727A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
    • F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
    • F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
    • F16D25/0635—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/12—Details not specific to one of the before-mentioned types

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints Allowing Movement (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

PURPOSE:To economically improve sealing performance by pressing each carbon seal to a clutch cover end surface and the collar portion of a cylindrical shaft with compressed air supplied to a seal chamber through a clearance gap and disposing an O-ring between the outer peripheral surface of the carbon seal and the inner peripheral surface of a cylindrical portion of a joint case. CONSTITUTION:Compressed air supplied from an air supply device of an air tank 30 or the like is passed through a rotary cylindrical shaft 22 and supplied to a piston operating air chamber 13 of a clutch cover 3 to operate a clutch. Simultaneously, some of compressed air in a joint case 21 enters the respective seal chambers 43, 44 through a clearance C to press the first carbon seal 36 to a clutch cover end surface 15 by pressure of the air and press the second carbon seal 37 to a cylindrical shaft flange portion 22a, whereby the rotary frictional surfaces 15, 22a are surely sealed. Further, both rings 40, 41 seal between the outer peripheral surfaces of the respective carbon seals 36, 37 and the inner peripheral surface of a cylindrical portion 46. Accordingly, the need of an oil pump and an oil passage is eliminated.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、主として自動車用エアクラッチの回転継手用
シール装置に関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention mainly relates to a sealing device for a rotary joint of an air clutch for an automobile.

(従来技術及びその課題) 第3図は従来例を示しており、クラッチカバー3に結合
された回転筒軸22と、クラッチハウジング11又はミ
ッションケース等に固定された継手ケース55の間には
、複数個のオイルシール56が配置され、エアタンク3
0から圧力調整器29及びコントロールバルブ27等を
介して上記オイルシール56部分に圧縮エアの一部を供
給すると共に、オイルポンプ57から潤滑油を供給し、
油圧と空圧のバランス式でシール及び冷却を行なってい
る。 しかしオイルポンプ57、油圧用チエツクバルブ
58並びにオイル通路を必要とし、部品コストがかかり
、発熱性及び耐久性の点でまだ満足とはいえない。また
オイル漏れによりクラッチ機能の低下の心配もある。
(Prior art and its problems) FIG. 3 shows a conventional example, in which there is a space between the rotary cylinder shaft 22 coupled to the clutch cover 3 and the coupling case 55 fixed to the clutch housing 11 or the transmission case, etc. A plurality of oil seals 56 are arranged, and the air tank 3
A portion of compressed air is supplied from 0 to the oil seal 56 portion through the pressure regulator 29, control valve 27, etc., and lubricating oil is supplied from the oil pump 57.
Sealing and cooling are performed using a balanced system of hydraulic and pneumatic pressure. However, it requires an oil pump 57, a hydraulic check valve 58, and an oil passage, which increases the cost of parts and is not yet satisfactory in terms of heat generation and durability. There is also a concern that oil leakage may reduce clutch function.

(発明の目的) 本発明の目的は、オイルポンプ及びオイル供給通路等を
不要とし、経済的でかつシール性能の良いエアクラッチ
の回転継手用シール装置を提供することである。
(Objective of the Invention) An object of the present invention is to provide a sealing device for a rotary joint of an air clutch that is economical and has good sealing performance, eliminating the need for an oil pump, an oil supply passage, and the like.

(目的を達成するための技術的手段) 上記目的を達成するために本発明は、外周に筒部を一体
に有する継手ケースの内周面を、空気流通用の僅かの隙
間を隔てて筒軸外周面に嵌合し、継手ケースの両側面と
クラッチカバー端面並びに筒軸つば部の間に上記筒部で
覆われたシール室を形成し、各シール室に環状カーボン
シールを配置し、上記隙間を介してシール室に供給され
る圧縮エアにより各カーボンシールをクラッチカバー端
面並びに筒軸つば部に圧接し、カーボンシール外周面と
継手ケースの筒部内周面の間にはOリングを配置してい
る。
(Technical Means for Achieving the Object) In order to achieve the above object, the present invention provides an arrangement in which the inner circumferential surface of a joint case having a cylindrical portion integrally on the outer periphery is connected to the cylindrical axis with a slight gap for air circulation. A seal chamber is formed between both side surfaces of the coupling case, the end face of the clutch cover, and the cylindrical shaft collar, and is covered with the cylindrical portion, and an annular carbon seal is placed in each seal chamber to fill the above gap. Compressed air supplied to the seal chamber through the pressurizes each carbon seal to the end face of the clutch cover and the cylindrical shaft collar, and an O-ring is placed between the outer circumferential surface of the carbon seal and the inner circumferential surface of the cylindrical part of the joint case. There is.

(作用) エアタンク等のエア供給装置からの圧縮エアは、継手ケ
ース内から回転筒袖内を通してクラッチカバーのピスト
ン作動用空気室に供給されて、クラッチを作動させる。
(Operation) Compressed air from an air supply device such as an air tank is supplied from the inside of the joint case through the rotary sleeve to the piston actuating air chamber of the clutch cover to actuate the clutch.

それと同時に圧縮エアの一部は継手ケースの内周隙間を
通ってシール室内に入り、エアのカーボンシールをそれ
ぞれクラッチカバー端面並びに筒軸っは部に圧接する。
At the same time, a portion of the compressed air enters the sealing chamber through the inner circumferential gap of the joint case, and presses the carbon seal of the air against the end face of the clutch cover and the cylindrical shaft.

それによりカーボンシールで回転摩擦面のシールを行う
。
As a result, the rotating friction surface is sealed with a carbon seal.

またOリングにより軸方向摺接面のシールを行う。Furthermore, the axial sliding surface is sealed by an O-ring.

(実施例) 第2図は本発明を適用した自動車用エアクラッチの縦断
面図であり、エンジン側のフライホイール2にクラッチ
カバー3が固着され、該クラッチカバー3の環状シリン
ダー14内に環状ピストンが12が軸方向移動自在に配
置されている。ピストン12にはプレッシャープレート
5が一体的に結合されており、プレッシャープレート5
はリターンばね9によりクラッチカバー3側(クラッチ
切り側)へと付勢されている。フライホイール2とプレ
ッシャープレート5の間にクラッチディスク8のフェー
シング6が配置され、プレッシャープレート5のフライ
ホイール側への移動によりフェーシング6をフライホイ
ール2に押し付けるようになっている。クラッチディス
ク8は出力軸1にスプライン嵌合し、出力軸1はミッシ
ョン入力軸(図示せず)に連動連結されている。
(Embodiment) FIG. 2 is a longitudinal cross-sectional view of an air clutch for an automobile to which the present invention is applied. 12 are arranged so as to be freely movable in the axial direction. A pressure plate 5 is integrally connected to the piston 12.
is urged toward the clutch cover 3 side (clutch release side) by the return spring 9. A facing 6 of a clutch disc 8 is arranged between the flywheel 2 and the pressure plate 5, and the facing 6 is pressed against the flywheel 2 by moving the pressure plate 5 toward the flywheel. The clutch disc 8 is spline-fitted to the output shaft 1, and the output shaft 1 is operatively connected to a transmission input shaft (not shown).

クラッチカバー3の内周端面は0リング55を介して筒
軸22の外周面に結合され、筒軸22の内周面にはブツ
シュ25が嵌合固着されている。
The inner circumferential end surface of the clutch cover 3 is connected to the outer circumferential surface of the cylinder shaft 22 via an O-ring 55, and a bushing 25 is fitted and fixed to the inner circumferential surface of the cylinder shaft 22.

ブツシュ25は出力軸1の外周に対して隙間を隔てて嵌
合している。筒軸22の外周面には回転継手ケース21
が配置され、回転継手ケース21は筒部46を一体に有
すると共にケースサポート19に固着され、ケースサポ
ート19は例えばミッションケース端面に固着されてい
る。前記シリンダー14の空気室13はクラッチカバー
3のエア通路23、筒軸22及びブツシュ25内のエア
通路24、継手ケース21内のエア通路49を介してコ
ントロールバルブ27の第1エアロ27aに接続されて
いる。コントロールバルブ27は上記第1エアロ27a
と共に第2エアロ27b及び大気口27cを備え、さら
にマスクシリンダー32を介してクラッチペダル33に
接続されている。
The bushing 25 is fitted onto the outer periphery of the output shaft 1 with a gap in between. A rotary joint case 21 is provided on the outer peripheral surface of the cylinder shaft 22.
The rotary joint case 21 integrally has a cylindrical portion 46 and is fixed to a case support 19, and the case support 19 is fixed to, for example, an end face of the transmission case. The air chamber 13 of the cylinder 14 is connected to the first aero 27a of the control valve 27 through an air passage 23 of the clutch cover 3, an air passage 24 in the cylinder shaft 22 and the bush 25, and an air passage 49 in the joint case 21. ing. The control valve 27 is the first aero 27a.
It also has a second aero 27b and an air port 27c, and is further connected to a clutch pedal 33 via a mask cylinder 32.

第2エアロ27bは圧力調整器29を介して圧縮エアタ
ンク30に接続し、エアタンク30はエンジンにより駆
動されるコンプレッサー(図示せず)に接続している。
The second aero 27b is connected to a compressed air tank 30 via a pressure regulator 29, and the air tank 30 is connected to a compressor (not shown) driven by the engine.

クラッチペダル33の操作により第1エアロ27aを第
2エアロ27bと大気口27cとに切り換える。即ちク
ラッチペダル33を離している時(クラッチ接続時)に
は、第2エアロ27bを介してエアタンク30側に接続
し、継手ケース21側へと圧縮エアを供給し、一方クラ
ッチを踏んだ時(クラッチ接続時)には、その踏み量に
応じて大気口27cに連通し、継手ケース側の圧縮エア
を大気に開放するようになっている。
By operating the clutch pedal 33, the first aero 27a is switched to the second aero 27b and the atmosphere port 27c. That is, when the clutch pedal 33 is released (when the clutch is connected), compressed air is connected to the air tank 30 side via the second aero 27b and supplied to the joint case 21 side, and when the clutch is depressed (on the other hand) When the clutch is engaged), it communicates with the atmosphere port 27c depending on the amount of depression, and the compressed air on the joint case side is released to the atmosphere.

第1図において、回転継手ケース21の両側面とクラッ
チカバーの端面15並びにサポート端面の間には筒部4
6で覆われたシール室43.44がそれぞれ形成されて
おり、サポート19側のシール室44には筒軸22の外
向フランジ22aが突入している。継手ケース21の一
方の端面とクラッチカバー端面15の間には、環状の第
1カーボンシール36が配置され、ばね(例えば皿ばね
)51によりクラッチカバー端面15に当接している。
In FIG. 1, there is a cylindrical portion 4 between both side surfaces of the rotary joint case 21, the end surface 15 of the clutch cover, and the support end surface.
Seal chambers 43 and 44 covered by 6 are formed respectively, and the outward flange 22a of the cylindrical shaft 22 protrudes into the seal chambers 44 on the support 19 side. An annular first carbon seal 36 is disposed between one end surface of the joint case 21 and the clutch cover end surface 15 , and is brought into contact with the clutch cover end surface 15 by a spring (for example, a disc spring) 51 .

上記ばね51はシール圧確保の補助と軸方向の振動追従
の役目を果たす。第1カーボンシール36の外周面と筒
部46の間には第1「0」リング40が配置されている
。継手ケース21の他方の面と筒軸フランジ22aの間
には第2カーボンシール37が配置され、第2カーボン
シール37の外周面と筒部46の内周面の間には第2「
0」リング41が配置されている。上記第2カーボンシ
ール37は、筒いく外周面から隙間を隔てると共に継手
ケース側の面にテーパー状の受圧面37を備えている。
The spring 51 serves to assist in securing sealing pressure and to follow vibrations in the axial direction. A first "0" ring 40 is disposed between the outer peripheral surface of the first carbon seal 36 and the cylindrical portion 46. A second carbon seal 37 is arranged between the other surface of the joint case 21 and the cylindrical shaft flange 22a, and a second
0'' ring 41 is arranged. The second carbon seal 37 is provided with a tapered pressure receiving surface 37 on the surface facing the joint case while separating a gap from the outer circumferential surface of the tube.

さらに筒軸フランジ部22aとサポート端面の間には第
3カーボンシール38が配置されている。回転継手ケー
ス21の内周端面と筒軸22の外周端面の間には空気流
通用の僅かな隙間Cが介在しており、該隙間Cを介して
継手ケース21内の空気通路49と各シール室43.4
4とを連通している。
Further, a third carbon seal 38 is arranged between the cylinder shaft flange portion 22a and the support end surface. There is a slight gap C for air circulation between the inner circumferential end surface of the rotary joint case 21 and the outer circumferential end surface of the cylindrical shaft 22, and the air passage 49 in the joint case 21 and each seal are connected through the gap C. Room 43.4
It communicates with 4.

次に作用を説明する。クラッチペダル33を踏んでいな
い時には、エアタンク30からの圧縮エアは圧力調整器
29及びコントロールバルブ27を通って継手ケース内
の通路49に入り、筒軸2及びブツシュ25内の通路2
4及びクラッチカバー3の通路23を介してシリンダー
14内の空気室13に入る。そしてエア圧によりピスト
ン12を介してプレッシャープレート5をフライホイー
ル2側に押し、クラッチディス8のフェーシング6をフ
ライホイール2に押し付け、クラッチ接続状態を維持す
る。
Next, the effect will be explained. When the clutch pedal 33 is not depressed, compressed air from the air tank 30 passes through the pressure regulator 29 and the control valve 27, enters the passage 49 in the joint case, and flows into the passage 2 in the cylinder shaft 2 and bushing 25.
4 and enters the air chamber 13 in the cylinder 14 through the passage 23 of the clutch cover 3. Then, the pressure plate 5 is pushed toward the flywheel 2 by air pressure via the piston 12, and the facing 6 of the clutch disc 8 is pushed against the flywheel 2 to maintain the clutch connected state.

上記クラッチ接続時、第1図の継手ケース内の圧縮エア
の一部は隙間Cから各シール室43.44に入り、エア
の圧力により第1カーボンシール36をクラッチカバー
端面15に押し付け、第2カーボンシール37を筒軸フ
ランジ部22aに押し付け、それらにより回転摩擦面(
15,22a)を確実にシールする。また両「0」リン
グ40.41により各カーボンシール36.37の外周
面と筒部46の内周面との間をシールする。
When the clutch is connected, a part of the compressed air in the joint case shown in FIG. The carbon seal 37 is pressed against the cylinder shaft flange portion 22a, and the rotational friction surface (
15, 22a). Further, the outer circumferential surface of each carbon seal 36,37 and the inner circumferential surface of the cylindrical portion 46 are sealed by both "0" rings 40,41.

クラッチペダル33を踏んだ時(クラッチ切り時)には
、シリンダー14の空気室13は各通路23.24.4
9を介してコントロールバルブ27の大気口27cに連
通し、大気に開放される。
When the clutch pedal 33 is depressed (clutch disengaged), the air chamber 13 of the cylinder 14 is connected to each passage 23, 24, 4.
9, it communicates with the atmosphere port 27c of the control valve 27 and is open to the atmosphere.

従ってリターンばね9の作用によってプレッシャープレ
ート5はクラッチカバー3側に戻り、クラッチは切れる
。
Therefore, the pressure plate 5 returns to the clutch cover 3 side by the action of the return spring 9, and the clutch is disengaged.

(発明の効果) 以上説明したように本発明によると: (1)カーボンシール36.37を利用したメカニカル
シールであり、回転摩擦面15.22aのシール圧をク
ラッチ作動用の圧縮エアのみを利用して確保しているの
で、従来のようにオイルポンプやオイル通路が不要にな
り、部品コスト等を節約できる。
(Effects of the Invention) As explained above, according to the present invention: (1) It is a mechanical seal using the carbon seal 36.37, and the sealing pressure of the rotating friction surface 15.22a is generated using only compressed air for clutch operation. This eliminates the need for oil pumps and oil passages, which is required in the past, resulting in savings in parts costs, etc.

(2)オイルを使用しないので、従来のように高圧化に
よるオイル漏れの心配はなく、保守が容易で良好なりラ
ッチ性能を保てる。
(2) Since no oil is used, there is no need to worry about oil leakage due to high pressure as in the past, and maintenance is easy and good latch performance can be maintained.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明を適用したエアクラッチの回転継手部分
の縦断面拡大図、第2図はエアクラッチ全体の縦断面図
、第3図は従来例の縦断面図である。1・・・出力軸、
3・・・クラッチカバー、21・・・継手ケース、36
.37・・・カーボンシール、43.44・・・シール
室、27.29・・・コントロールバルブ、エアタンク
(エア供給装置)、40.41・・・0リング 特許出願人  株式会社 大金製作所 賢立5
FIG. 1 is an enlarged vertical cross-sectional view of a rotary joint portion of an air clutch to which the present invention is applied, FIG. 2 is a vertical cross-sectional view of the entire air clutch, and FIG. 3 is a vertical cross-sectional view of a conventional example. 1...output shaft,
3...Clutch cover, 21...Coupling case, 36
.. 37...Carbon seal, 43.44...Seal chamber, 27.29...Control valve, air tank (air supply device), 40.41...0 ring Patent applicant Kenritsu Daikin Seisakusho Co., Ltd. 5

Claims (1)

【特許請求の範囲】[Claims] エア供給装置からの圧縮エアを、継手ケース内から回転
筒軸内を通してクラッチカバーのピストン作動用空気室
に供給するエアクラッチにおいて、外周に筒部を一体に
有する継手ケースの内周面を、空気流通用の僅かの隙間
を隔てて筒軸外周面に嵌合し、継手ケースの両側面とク
ラッチカバー端面並びに筒軸つば部の間に上記筒部で覆
われたシール室を形成し、各シール室に環状カーボンシ
ールを配置し、上記隙間を介してシール室に供給される
圧縮エアにより各カーボンシールをクラッチカバー端面
並びに筒軸つば部に圧接し、カーボンシール外周面と継
手ケースの筒部内周面の間にはOリングを配置したエア
クラッチの回転継手用シール装置。
In an air clutch that supplies compressed air from an air supply device from the inside of the joint case through the rotating cylinder shaft to the air chamber for piston operation of the clutch cover, the inner peripheral surface of the joint case, which has an integral cylindrical portion on the outer periphery, is It fits onto the outer circumferential surface of the cylinder shaft with a small gap for circulation, and a seal chamber covered by the cylinder part is formed between both sides of the coupling case, the end face of the clutch cover, and the cylinder shaft collar, and each seal An annular carbon seal is arranged in the chamber, and compressed air supplied to the seal chamber through the above gap presses each carbon seal against the end face of the clutch cover and the cylindrical shaft collar, and the outer peripheral surface of the carbon seal and the inner periphery of the cylinder of the joint case are pressed. A sealing device for air clutch rotary joints with an O-ring placed between the surfaces.
JP63096374A 1988-04-19 1988-04-19 Sealing device for rotary joint of air clutch Pending JPH01269727A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63096374A JPH01269727A (en) 1988-04-19 1988-04-19 Sealing device for rotary joint of air clutch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63096374A JPH01269727A (en) 1988-04-19 1988-04-19 Sealing device for rotary joint of air clutch

Publications (1)

Publication Number Publication Date
JPH01269727A true JPH01269727A (en) 1989-10-27

Family

ID=14163193

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63096374A Pending JPH01269727A (en) 1988-04-19 1988-04-19 Sealing device for rotary joint of air clutch

Country Status (1)

Country Link
JP (1) JPH01269727A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6186509B1 (en) 1998-05-22 2001-02-13 Nippon Pillar Packing Co., Ltd. Rotary joint assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6186509B1 (en) 1998-05-22 2001-02-13 Nippon Pillar Packing Co., Ltd. Rotary joint assembly

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