JPH0558973U - Fluid fitting - Google Patents

Fluid fitting

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Publication number
JPH0558973U
JPH0558973U JP220292U JP220292U JPH0558973U JP H0558973 U JPH0558973 U JP H0558973U JP 220292 U JP220292 U JP 220292U JP 220292 U JP220292 U JP 220292U JP H0558973 U JPH0558973 U JP H0558973U
Authority
JP
Japan
Prior art keywords
storage chamber
working fluid
working
chamber
supply hole
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
JP220292U
Other languages
Japanese (ja)
Inventor
真市 川田
Original Assignee
株式会社ユニシアジェックス
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 株式会社ユニシアジェックス filed Critical 株式会社ユニシアジェックス
Priority to JP220292U priority Critical patent/JPH0558973U/en
Publication of JPH0558973U publication Critical patent/JPH0558973U/en
Pending legal-status Critical Current

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Abstract

(57)【要約】 【目的】 作動流体が安定して作動室に供給されてハン
チング現象を防止する。 【構成】 作動流体の貯留室8の径方向外側に第2貯留
室8Aを設けるとともに、この第2貯留室に対向せしめ
て、仕切板7に供給孔7Aを形成する。
(57) [Abstract] [Purpose] The working fluid is stably supplied to the working chamber to prevent the hunting phenomenon. A second storage chamber 8A is provided radially outside the working fluid storage chamber 8, and a supply hole 7A is formed in the partition plate 7 so as to face the second storage chamber.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

本考案は、流体継手、特に自動車用エンジンの冷却ファンを駆動するファンカ ップリング装置等に用いて好適な流体継手に関するものである。 The present invention relates to a fluid coupling, and more particularly to a fluid coupling suitable for use in a fan coupling device for driving a cooling fan of an automobile engine.

【0002】[0002]

【従来の技術】[Prior Art]

従来の流体継手には、実開昭58−146132号公報等に開示されたものが 知られている。これらは、駆動部材とこれに対向する従動部材とのそれぞれに、 互いに係合するラビリンス状のトルク伝達面を作動室内において形成し、この作 動室の両トルク伝達面の間隙へ貯留室から作動流体を供給して駆動部材から従動 部材へ回転トルクを伝達するものである。そして、貯留室から作動室へ供給され る作動流体の供給孔は、両室を隔成する仕切板に、かつ、貯留室の径方向外周よ り内側に設けられている。 As a conventional fluid coupling, that disclosed in Japanese Utility Model Laid-Open No. 58-146132 is known. These form a labyrinth-like torque transmission surface in the working chamber that engages with each other on the driving member and the driven member facing the driving member, and operate from the storage chamber to the gap between both torque transmission surfaces of the working chamber. The fluid is supplied to transmit the rotational torque from the driving member to the driven member. The supply hole for the working fluid supplied from the storage chamber to the working chamber is provided in the partition plate that separates the two chambers and inside the radial outer periphery of the storage chamber.

【0003】[0003]

【考案が解決しようとする課題】[Problems to be solved by the device]

一般に、供給孔から作動室へ供給される作動流体についての供給量の制御は、 供給孔の開孔面積と貯留室における流体表面の位置が重要な要素となるといわれ ている。作動流体は、冷却ファンの回転により、遠心力が作用して貯留室外周部 方向へ移動しながら供給孔より作動室へ供給されるが、従来装置においては、前 述のように、作動流体の供給孔が貯留室の軸方向外周より内側に設けられている ため、急激に冷却ファンの回転が上昇する場合等のように作動流体が貯留室外周 へ分散されて流体表面の位置が変動すると、作動流体が適切に供給されず、図3 の円の部分に示すような回転数が急激に変化する、いわゆるハンチング現象が生 じる場合がある。 Generally, it is said that the opening area of the supply hole and the position of the fluid surface in the storage chamber are important factors in controlling the supply amount of the working fluid supplied from the supply hole to the working chamber. The working fluid is supplied to the working chamber from the supply hole while moving toward the outer peripheral portion of the storage chamber due to the centrifugal force acting by the rotation of the cooling fan.However, in the conventional device, as described above, the working fluid Since the supply holes are provided inside the outer periphery of the storage chamber in the axial direction, if the working fluid is dispersed to the outer periphery of the storage chamber and the position of the fluid surface fluctuates, such as when the rotation of the cooling fan rapidly rises. The working fluid may not be properly supplied, and a so-called hunting phenomenon may occur in which the rotation speed sharply changes as shown by the circle in FIG.

【0004】 本考案の目的は、上記従来技術に起因する問題を解決し、ハンチング現象がな く作動流体が安定して供給される流体継手を提供することにある。An object of the present invention is to provide a fluid coupling that solves the above-mentioned problems caused by the conventional technique and that can supply a working fluid stably without a hunting phenomenon.

【0005】[0005]

【課題を解決するための手段】[Means for Solving the Problems]

かかる目的を達成するため、本考案は、ハウジング内に仕切板によって隔成さ れた作動流体用の貯留室と作動室とを備えるとともに、該作動室内に設けられ相 対回転自在な駆動部材と従動部材との対向部位にラビリンス溝を形成する環状突 起を設ける一方、前記ラビリンス溝に前記貯留室より作動流体を供給して前記駆 動部材の回転トルクを前記従動部材へ伝達する流体継手において、前記貯留室の 径方向外側に第2貯留室を設け、該第2貯留室に対向せしめて前記仕切板に作動 流体の供給孔を形成したことを特徴とする。 In order to achieve such an object, the present invention includes a working fluid storage chamber and a working chamber, which are separated from each other by a partition plate in a housing, and includes a driving member provided in the working chamber and rotatable relative to each other. In a fluid coupling for providing a working fluid from the storage chamber to the labyrinth groove to transmit a rotational torque of the driving member to the driven member while providing an annular protrusion forming a labyrinth groove at a position facing the driven member. A second storage chamber is provided radially outside the storage chamber, and a working fluid supply hole is formed in the partition plate so as to face the second storage chamber.

【0006】[0006]

【作用】[Action]

本考案によれば、貯留室の径方向外側に第2貯留室を設け、この第2貯留室に 対向せしめて作動流体の供給孔を形成したので、遠心力の作用により貯留室外周 へ分散されようとする作動流体は第2貯留室へ集められ、この第2貯留室に対向 して形成された供給孔より、作動流体は安定して作動室へ供給される。 According to the present invention, the second storage chamber is provided on the outer side in the radial direction of the storage chamber, and the working fluid supply hole is formed so as to face the second storage chamber, so that it is dispersed to the outer periphery of the storage chamber by the action of the centrifugal force. The working fluid to be collected is collected in the second storage chamber, and the working fluid is stably supplied to the working chamber through the supply hole formed facing the second storage chamber.

【0007】[0007]

【実施例】【Example】

以下、図面を参照して本考案にかかる流体継手の実施例について説明する。 Embodiments of a fluid coupling according to the present invention will be described below with reference to the drawings.

【0008】 図1は、本考案にかかる流体継手を自動車のファンカップリングに適用した場 合の実施例であるが、Vベルトプーリ等が取付けられるフランジを備えた駆動部 材たる駆動軸1は、ベアリング3を介して、その外周に冷却ファン(不図示)が 取付けられる従動部材たるボディ2を回転自在に軸支している。駆動軸1の前端 には、ディスク4が固定され、ディスク4は後述する作動室5に収納配置される 。ボディ2の前端にはカシメられて連結されたカバー6が配設され、ボディ2と カバー6とでハウジングを形成するとともに、ハウジングの内部は、仕切板7に よって、前側の作動流体貯留室8と後側の作動室5とに隔成されている。FIG. 1 shows an embodiment in which the fluid coupling according to the present invention is applied to a fan coupling of an automobile. The drive shaft 1 as a drive member having a flange to which a V belt pulley or the like is attached is A body 2 as a driven member, to which a cooling fan (not shown) is attached, is rotatably supported by a bearing 3 on its outer periphery. A disc 4 is fixed to the front end of the drive shaft 1, and the disc 4 is housed and arranged in a working chamber 5 described later. A cover 6 which is crimped and connected is provided at the front end of the body 2, and a housing is formed by the body 2 and the cover 6, and the inside of the housing is separated by a partition plate 7 from the front side working fluid storage chamber 8 And a working chamber 5 on the rear side.

【0009】 上記ディスク4のカバー6側周縁部と、これと対向するカバー6周縁部には、 互いに所定間隔を以って噛合する環状突起4Aおよび6Aがそれぞれ穿設されて おり、両突起4Aおよび6A間において複数の環状ラビリンス溝が形成され、こ の環状ラビリンス溝によりトルク伝達面が構成される。そして、前記作動室内に 形成されたラビリンス溝において、シリコンオイル等の作動流体の粘性抵抗を得 ることにより、流体継手として作用するようになっている。Annular projections 4A and 6A that mesh with each other at a predetermined interval are formed in the peripheral edge of the disk 4 on the cover 6 side and the peripheral edge of the cover 6 facing the disk 6, respectively. And 6A, a plurality of annular labyrinth grooves are formed, and the annular labyrinth grooves form a torque transmission surface. In the labyrinth groove formed in the working chamber, the viscous resistance of the working fluid such as silicon oil is obtained to act as a fluid coupling.

【0010】 一方、カバー6と仕切板7とで囲まれて形成される作動流体の貯留室8は円筒 形状をなすとともに、駆動軸1に関しその径方向外側には第2貯留室8Aが設け られている。第2貯留室8Aは、遠心力によって貯留室8外周部へ分散する作動 流体の溜り部としての機能をはたすもので、本実施例では径方向断面が扇形をな している。その広さについては特別の限定を設ける必要はないが、後述するバル ブプレート11がバイメタル12の付勢により供給孔7Aを開閉できる程度が確 保されればよい。この供給孔7Aは作動室5と貯留室8とを隔成する仕切板7に 設けられ、しかも、第2貯留室8Aに対向せしめて配設される。On the other hand, a working fluid storage chamber 8 formed by being surrounded by the cover 6 and the partition plate 7 has a cylindrical shape, and a second storage chamber 8A is provided on the radial outside of the drive shaft 1. ing. The second storage chamber 8A functions as a reservoir for the working fluid dispersed to the outer peripheral portion of the storage chamber 8 by the centrifugal force, and has a fan-shaped radial cross section in this embodiment. There is no need to set a special limitation on the size, but it is sufficient that the valve plate 11 described later can open and close the supply hole 7A by the bias of the bimetal 12. The supply hole 7A is provided in the partition plate 7 that separates the working chamber 5 and the storage chamber 8 from each other, and is provided so as to face the second storage chamber 8A.

【0011】 また、カバー6周縁部には通路9が形成されている。従って、作動流体は、貯 留室8および第2貯留室8Aから供給孔7Aを通って作動室5へと供給され、最 終的には通路9を通って貯留室8へと回収されるようになっている。なお、通路 9の作動室5側開口端部には突起10が設けられ、この突起10は、ディスク4 の側端面との間で、遠心力のかかった作動流体を通路9にかき出すポンプの役目 をはたしている。A passage 9 is formed in the peripheral portion of the cover 6. Therefore, the working fluid is supplied from the storage chamber 8 and the second storage chamber 8A to the working chamber 5 through the supply hole 7A, and finally collected in the storage chamber 8 through the passage 9. It has become. A projection 10 is provided at the opening end of the passage 9 on the side of the working chamber 5. The projection 10 serves as a pump for scraping the working fluid, which has been subjected to centrifugal force, into the passage 9 between the projection 10 and the side end surface of the disk 4. It is running out.

【0012】 カバー6の略中央には、渦巻状のバイメタル12の中心端が外側に固定された 回転軸13が軸支されるとともに、この回転軸13の内端部には、バイメタル1 2の付勢により作動流体の供給孔7Aを開閉するバルブプレート11が支持され ている。渦巻状のバイメタル12は、その外周端がカバー6の定位置に固定され ており、ラジエータ(不図示)を通過した温度を感知し、その温度に応じて回転 軸13をバルブプレート11とともに回動させるように構成されている。A rotary shaft 13 having a center end of a spiral bimetal 12 fixed to the outside is rotatably supported substantially at the center of the cover 6, and an inner end portion of the rotary shaft 13 is provided with a bimetal 12. A valve plate 11 that opens and closes the supply hole 7A for the working fluid by urging is supported. The outer peripheral end of the spiral bimetal 12 is fixed to a fixed position of the cover 6, detects the temperature passing through a radiator (not shown), and rotates the rotary shaft 13 together with the valve plate 11 according to the temperature. Is configured to let.

【0013】 本実施例にかかる流体継手は、このようにラジエータを通過した温度により伝 達トルクを制御するようになっているが、その作動手順について説明すると、ま ずバイメタル12付近の雰囲気温度が低いエンジンの始動直後等においては、バ ルブプレート11がバイメタル12の作用により供給孔7Aを閉鎖して作動流体 の循環を実質上停止させる(図2(A))。その際、トルク伝達面のラビリンス 溝を形成する環状突起4Aおよび6A内に残留していた作動流体は、遠心力によ りディスク4の外側に流動し、前記突起10のポンプ機構により通路9を経て貯 留室8内へ送り出される。この結果、環状突起4Aおよび6A内に残留していた 作動流体は、エンジンの始動と同時に大半が排出され、ハウジングを形成するボ ディ2とカバー6は冷却ファン(不図示)とともに低速回転する。The fluid coupling according to the present embodiment controls the transmission torque by the temperature passing through the radiator in this way. Explaining the operation procedure, first, the ambient temperature near the bimetal 12 is Immediately after the engine is started low, the valve plate 11 closes the supply hole 7A by the action of the bimetal 12 to substantially stop the circulation of the working fluid (FIG. 2 (A)). At that time, the working fluid remaining in the annular projections 4A and 6A forming the labyrinth groove of the torque transmission surface flows to the outside of the disk 4 by the centrifugal force, and the pump mechanism of the projection 10 causes the working fluid to flow through the passage 9. After that, it is sent to the storage room 8. As a result, most of the working fluid remaining in the annular protrusions 4A and 6A is discharged when the engine is started, and the body 2 and the cover 6 forming the housing rotate at a low speed together with a cooling fan (not shown).

【0014】 バイメタル12付近の雰囲気温度が上昇すると、バルブプレート11が供給孔 7Aを徐々に開孔し(図2(B))、作動流体は、貯留室8および第2貯留室8 Aから供給孔7Aを通って作動室5内へ流入する。そして、作動流体の流入量に 応じた駆動トルクが発生し、図2(C)の完全に開孔した状態でボティ2に固定 された冷却ファンは高速回転する。このとき、作動流体の表面位置は、供給孔7 Aが第2貯留室と対向した構造となっているため、常時、供給孔7Aを満たすこ とになり、作動流体の供給量は、その表面位置に左右されずに供給孔の開孔面積 のみによって制御することが可能となり、作動流体は安定して供給される結果、 ハンチング現象が防止される。When the ambient temperature around the bimetal 12 rises, the valve plate 11 gradually opens the supply hole 7A (FIG. 2 (B)), and the working fluid is supplied from the storage chamber 8 and the second storage chamber 8A. It flows into the working chamber 5 through the hole 7A. Then, a driving torque is generated according to the inflow amount of the working fluid, and the cooling fan fixed to the body 2 in the fully opened state in FIG. 2C rotates at high speed. At this time, the surface position of the working fluid is such that the supply hole 7A faces the second storage chamber, so that the supply hole 7A is always filled, and the supply amount of the working fluid is equal to the surface. It is possible to control only by the opening area of the supply hole regardless of the position, and as a result that the working fluid is stably supplied, the hunting phenomenon is prevented.

【0015】[0015]

【考案の効果】[Effect of the device]

以上の説明から明らかなように、本考案にかかる流体継手は、作動流体の貯留 室8の径方向外側に第2貯留室8Aを設けるとともに、この第2貯留室8Aに対 向せしめて仕切板7に作動流体の供給孔7Aを形成したので、供給孔7Aは作動 流体に関し遠心力の影響を受けることがなくなり、安定して供給され、ハンチン グ現象が防止される。 As is clear from the above description, in the fluid coupling according to the present invention, the second storage chamber 8A is provided outside the storage chamber 8 for the working fluid in the radial direction, and the partition plate is made to face the second storage chamber 8A. Since the working fluid supply hole 7A is formed in 7, the supply hole 7A is not affected by the centrifugal force with respect to the working fluid, is stably supplied, and the hunting phenomenon is prevented.

【図面の簡単な説明】[Brief description of drawings]

【図1】本考案の一実施例を示す縦断面図である。FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

【図2】本考案の作動状態を示す模式図である。FIG. 2 is a schematic view showing an operating state of the present invention.

【図3】従来装置において発生するハンチング現象を示
すグラフである。
FIG. 3 is a graph showing a hunting phenomenon that occurs in a conventional device.

【符号の説明】[Explanation of symbols]

1 駆動軸(駆動部材) 2 ボディ(従動部材) 4 ディスク 4A 環状突起 5 作動室 6 カバー 6A 環状突起 7 仕切板 7A 供給孔 8 貯留室 8A 第2貯留室 11 バルブプレート 1 Drive Shaft (Drive Member) 2 Body (Following Member) 4 Disc 4A Annular Protrusion 5 Working Chamber 6 Cover 6A Annular Protrusion 7 Partition Plate 7A Supply Hole 8 Storage Chamber 8A Second Storage Chamber 11 Valve Plate

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】 ハウジング内に仕切板によって隔成され
た作動流体用の貯留室と作動室とを備えるとともに、該
作動室内に設けられ相対回転自在な駆動部材と従動部材
との対向部位にラビリンス溝を形成する環状突起を設け
る一方、前記ラビリンス溝に前記貯留室より作動流体を
供給して前記駆動部材の回転トルクを前記従動部材へ伝
達する流体継手において、 前記貯留室の径方向外側に第2貯留室を設け、該第2貯
留室に対向せしめて前記仕切板に作動流体の供給孔を形
成したことを特徴とする流体継手。
1. A labyrinth is provided in a housing, which comprises a working fluid storage chamber and a working chamber which are separated from each other by a partition plate, and which is provided in the working chamber so as to face a relatively rotatable driving member and a driven member. While providing an annular protrusion that forms a groove, in a fluid coupling that supplies a working fluid from the storage chamber to the labyrinth groove to transmit the rotational torque of the drive member to the driven member, a radial outer side of the storage chamber 2. A fluid coupling characterized in that two storage chambers are provided, and a working fluid supply hole is formed in the partition plate so as to face the second storage chamber.
JP220292U 1992-01-24 1992-01-24 Fluid fitting Pending JPH0558973U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP220292U JPH0558973U (en) 1992-01-24 1992-01-24 Fluid fitting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP220292U JPH0558973U (en) 1992-01-24 1992-01-24 Fluid fitting

Publications (1)

Publication Number Publication Date
JPH0558973U true JPH0558973U (en) 1993-08-03

Family

ID=11522775

Family Applications (1)

Application Number Title Priority Date Filing Date
JP220292U Pending JPH0558973U (en) 1992-01-24 1992-01-24 Fluid fitting

Country Status (1)

Country Link
JP (1) JPH0558973U (en)

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