JPS6216506Y2 - - Google Patents
Info
- Publication number
- JPS6216506Y2 JPS6216506Y2 JP13559779U JP13559779U JPS6216506Y2 JP S6216506 Y2 JPS6216506 Y2 JP S6216506Y2 JP 13559779 U JP13559779 U JP 13559779U JP 13559779 U JP13559779 U JP 13559779U JP S6216506 Y2 JPS6216506 Y2 JP S6216506Y2
- Authority
- JP
- Japan
- Prior art keywords
- working chamber
- drive plate
- circumferential surface
- chamber
- passage
- 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
- 239000012530 fluid Substances 0.000 claims description 24
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【考案の詳細な説明】
本案はフアンドライブ装置、特にエンジンの冷
却フアンを駆動するフアンドライブ装置の改良に
関するものである。[Detailed Description of the Invention] The present invention relates to an improvement of a fan drive device, particularly a fan drive device that drives a cooling fan of an engine.
従来のこの種のフアンドライブ装置において
は、その作動状態が断即ちオフのとき粘性流体の
ほとんどが後記作動室から貯蔵室へ抜けてしまう
ためエンジンの振動が駆動軸より軸受を介して被
動側へ直接伝達され、軸受自身の寿命低下や被動
側の各装置、例えば感温機構や軸受及びフアンブ
レード等に損傷を与える不具合があつた。本案は
上述のような従来フアンドライブ装置の不具合を
除去するために案出したもので、その要旨は、作
動室より貯蔵室へ排出される通路の入口を作動室
内周面より内周側に設け、該通路入口より外周側
となる駆動板の断面形状を駆動板全周に亘つて作
動室内周面に近接する部分を一頂点とするほぼ鋭
角三角形となし、該頂点と作動室内周面との間で
絞り部を形成し、駆動板の回転により粘性流体を
作動室から貯蔵室に循還させて、該流体の粘性抵
抗によりハウジングにトルク伝達させることによ
り、フアンドライブオフ時における駆動軸からハ
ウジングへ直接伝達される振動を軽減して、軸受
や被動側各装置への振動による損傷を防止すると
同時に、上記絞り部の形成により生ずるいわゆる
ひきずりによる動力損失も少ない、耐久性のすぐ
れたフアンドライブ装置を比較的構造簡単で安価
に提供せんとするものである。 In conventional fan drive devices of this kind, when the operating state is interrupted, that is, off, most of the viscous fluid escapes from the operating chamber to the storage chamber, which will cause engine vibrations to flow from the drive shaft to the driven side via the bearing. There was a problem in which the heat was transmitted directly, shortening the life of the bearing itself and damaging various devices on the driven side, such as the temperature-sensing mechanism, the bearing, and the fan blade. This proposal was devised to eliminate the above-mentioned problems with conventional fan drive devices, and its gist is that the entrance of the passage that discharges from the working chamber to the storage chamber is provided on the inner circumferential side of the circumferential surface of the working chamber. The cross-sectional shape of the drive plate on the outer circumferential side from the passage entrance is approximately an acute triangular shape with one apex located near the circumferential surface of the working chamber over the entire circumference of the drive plate, and the apex and the circumferential surface of the working chamber are By forming a constriction part between the drive plate and rotating the drive plate, the viscous fluid is circulated from the working chamber to the storage chamber, and torque is transmitted to the housing by the viscous resistance of the fluid. This highly durable fan drive device reduces the vibration directly transmitted to the bearings and other devices on the driven side to prevent vibration-induced damage, and at the same time reduces power loss due to so-called dragging caused by the formation of the constricted portion. It is intended to provide a relatively simple structure and low cost.
以下その実施例を図について説明する。 Examples thereof will be explained below with reference to the drawings.
エンジン（図示せず）に直結された駆動軸１に
は駆動板２が固定され、また上記駆動軸には駆動
板２を包囲すると共に、密封的に結合して粘性流
体空間を形成するハウジング３，４が軸受５を介
して支持されている。 A drive plate 2 is fixed to a drive shaft 1 directly connected to an engine (not shown), and a housing 3 is attached to the drive shaft, surrounding the drive plate 2 and sealingly coupling it to form a viscous fluid space. , 4 are supported via bearings 5.
そして、ハウジング４の前面には感温機構であ
るバイメタル６が取付けられ、このバイメタル６
によつてハウジング４を貫通したピストン７がバ
ルブ８を作動させ、粘性流体の貯蔵室９と作動室
１０との間に設けられた仕切壁１１の駆動軸１に
近い部位に形成した孔１１ａを開閉するように構
成されている。 A bimetal 6 which is a temperature sensing mechanism is attached to the front of the housing 4, and this bimetal 6
The piston 7 that penetrated the housing 4 operates the valve 8, and a hole 11a formed in a part of the partition wall 11 provided between the viscous fluid storage chamber 9 and the working chamber 10 near the drive shaft 1 is opened. It is configured to open and close.
また、ハウジング３，４の一方例えばハウジン
グ３の後面には複数のフアンブレード１３が固着
されている。尚、１２はハウジング４の内部に形
成された作動室１０と貯蔵室９を連通する粘性流
体の通路であり、１２ａは上記流体を通路１２へ
導入するための作動室側入口である。本案はこの
ようなフアンドライブ装置において、上記駆動板
２の該通路１２の作動室側入口１２ａより外側と
なる上記駆動板の断面形状を作動室内周面３ｂに
近接する部分を一頂点とするほぼ鋭角三角形とな
し、該頂点と作動室内周面３ｂとの間で絞り部２
１を形成したものである。 Further, a plurality of fan blades 13 are fixed to one of the housings 3 and 4, for example, to the rear surface of the housing 3. Note that 12 is a viscous fluid passage that communicates the working chamber 10 and the storage chamber 9 formed inside the housing 4, and 12a is an inlet on the working chamber side for introducing the fluid into the passage 12. In this fan drive device, the present invention is such that the cross-sectional shape of the drive plate 2 on the outside of the working chamber side entrance 12a of the passage 12 is approximately shaped with one vertex at a portion close to the working chamber circumferential surface 3b. A constricted portion 2 is formed between the apex and the circumferential surface 3b of the working chamber.
1 was formed.
従つて、本願フアンドライブ装置はオン時はも
ちろん、オフ時でも粘性流体が残留する該通路１
２の作動室側入口１２ａより外側となるハウジン
グ外周部の残留流体室３０内に臨む駆動板２の最
外周部とハウジング内周面３ｂとの間を、バルブ
開時のトルク変動に影響を及ぼさない程度に極力
接近させた絞り部２１を形成することにより、駆
動板２の軸線方向の振動Ａが生じたとき、振動方
向に対して垂直な面となる該駆動板２の絞り部２
１の左右に残留する粘性流体が絞り部２１による
粘性抵抗を介して矢印Ｂの如く移動することとな
り、即ち、残留流体室３０内粘性流体のダツシユ
ポツト効果によりハウジング３，４への振動が軽
減されるものである。 Therefore, in the fan drive device of the present invention, the viscous fluid remains in the passage 1 not only when it is on but also when it is off.
Between the outermost peripheral part of the drive plate 2 facing into the residual fluid chamber 30 on the outer peripheral part of the housing outside of the working chamber side inlet 12a of No. 2 and the inner peripheral surface 3b of the housing, there is a By forming the constricted portions 21 as close as possible to such an extent that the constricted portions 21 of the drive plate 2 are formed as close together as possible, when vibration A in the axial direction of the drive plate 2 occurs, the constricted portions 21 of the drive plate 2 become perpendicular to the vibration direction.
The viscous fluid remaining on the left and right sides of the housing 1 moves as shown by the arrow B through the viscous resistance of the constriction part 21, and in other words, the vibration to the housings 3 and 4 is reduced due to the dumppot effect of the viscous fluid in the residual fluid chamber 30. It is something that
しかしながら他面上述のような粘性流体式フア
ンドライブ装置はバルブ８閉時即ち、オフ時にお
ける駆動板２の回転力による従動側ハウジング
３，４回転への影響、いわゆるひきずりをなくす
必要がある。 However, on the other hand, in the viscous fluid type fan drive device as described above, it is necessary to eliminate the influence on the rotation of the driven side housings 3 and 4 due to the rotational force of the drive plate 2 when the valve 8 is closed, that is, when it is off, that is, so-called dragging.
一般に、粘性流体を充填した駆動部と従動部と
の間の動きは、駆動部と従動部間の距離が離れば
離れるほど、又駆動部と従動部との接近した面積
が少いほどひきずりは少くなる。 In general, the movement between the driving part filled with viscous fluid and the driven part is less likely to drag as the distance between the driving part and the driven part increases, and the area in which the driving part and the driven part are close to each other decreases. It becomes less.
本願では上記構成の如く、振動吸収のため駆動
板２と作動室内周面３ｂとの近接部分による絞り
部２１を設ける必要上、これによりひきずりが大
きく生ずる。この影響を軽減するには、上記絞り
部２１を構成する作動室内周面３ｂに近接する駆
動板２の外周部分の面積を極力小さく、更に該通
路の作動室側入口１２ａより外側となる駆動板の
絞り部以外の部分は作動室内周面３ｂおよび軸線
方向左右の内側面３ａ，４ａからの距離をできる
だけ隔す必要がある。そこで本願では駆動板断面
形状を作動室内周面３ｂに近接する部分を一頂点
とするほぼ鋭角三角形として、該絞り部２１以外
の駆動板２と作動室内周面３ｂおよび内側面３
ａ，４ａとの距離をはなして、ひきずりによる影
響を軽減させたものである。従つて、本願考案は
上述の如き構成としたのでフアンドライブ装置の
作動状態が断即ちオフのときにも該通路の作動室
側入口１２ａより外周側の粘性流体は残留流体室
３０に残り、駆動側即ち駆動軸１の振動が上記残
留流体室３０内の粘性流体に作用するため、該絞
り部による振動ダンピング効果によつて吸収・軽
減され、従つて、軸受５を介して被動側即ちハウ
ジング３，４側へ伝達される振動負荷が軽減され
るから上記被動側に装着されているバイメタル６
やピストン７等の感温機構や軸受及び該流体継手
装置に取付けられるフアンブレード１３等の損傷
が防止される効果がある。 In the present application, as in the above-mentioned configuration, it is necessary to provide the constricted portion 21 in the vicinity of the drive plate 2 and the working chamber peripheral surface 3b for vibration absorption, which causes a large amount of drag. In order to reduce this effect, the area of the outer peripheral portion of the drive plate 2 adjacent to the working chamber circumferential surface 3b constituting the throttle portion 21 should be made as small as possible, and the drive plate located outside the working chamber side entrance 12a of the passage should be made as small as possible. It is necessary that the portion other than the constricted portion be as far away as possible from the working chamber inner circumferential surface 3b and the left and right inner surfaces 3a, 4a in the axial direction. Therefore, in the present application, the cross-sectional shape of the drive plate is approximately an acute triangle with one vertex at a portion close to the working chamber circumferential surface 3b, and the drive plate 2 other than the constricted portion 21, the working chamber circumferential surface 3b, and the inner surface 3
A and 4a are separated from each other to reduce the effects of dragging. Therefore, since the present invention has the above-described configuration, even when the operating state of the fan drive device is cut off, that is, it is off, the viscous fluid on the outer peripheral side of the working chamber side entrance 12a of the passage remains in the residual fluid chamber 30, and the drive Since the vibration of the drive shaft 1 acts on the viscous fluid in the residual fluid chamber 30, it is absorbed and reduced by the vibration damping effect of the constriction, and the vibration of the drive shaft 1 acts on the viscous fluid in the residual fluid chamber 30, and is absorbed and reduced by the vibration damping effect of the constriction. The bimetal 6 installed on the driven side reduces the vibration load transmitted to the 4 side.
This has the effect of preventing damage to temperature sensing mechanisms such as the piston 7, bearings, and the fan blade 13 attached to the fluid coupling device.
同時に、該絞り部２１によるいわゆるひきずり
も軽減されるため、動力損失の少ない、耐久性の
すぐれたフアンドライブ装置が得られるという効
果がある。 At the same time, the so-called dragging caused by the constricted portion 21 is also reduced, so that a fan drive device with excellent durability and low power loss can be obtained.
更に本願フアンドライブ装置は従来装置の駆動
板外周部の形状変更のみで対応できるため、構造
簡単で安価に実施できる効果もある。 Furthermore, since the fan drive device of the present invention can be adapted to the conventional device by simply changing the shape of the outer periphery of the drive plate, it has the advantage of having a simple structure and being able to be implemented at low cost.
第１図は本案実施例のフアンドライブ機構を示
す断面図、第２図は同機構の要部拡大図である。
１；駆動軸、２；駆動板、３，４；ハウジン
グ、３ａ；作動室右側面、３ｂ；作動室内周面、
４ａ；作動室左側面、６；バイメタル、７；ピス
トン、８；バルブ、９；貯蔵室、１０；作動室、
１１；仕切壁、１２；通路、１２ａ；通路の作動
室側入口、１３；フアンブレード、２１；絞り
部、３０；残留流体室。
FIG. 1 is a sectional view showing a fan drive mechanism according to an embodiment of the present invention, and FIG. 2 is an enlarged view of the main parts of the same mechanism. 1; Drive shaft, 2; Drive plate, 3, 4; Housing, 3a; Right side of working chamber, 3b; Circumferential surface of working chamber,
4a; Working chamber left side, 6; Bimetal, 7; Piston, 8; Valve, 9; Storage chamber, 10; Working chamber,
11; Partition wall, 12; Passage, 12a; Working chamber side entrance of the passage, 13; Fan blade, 21; Throttle part, 30; Residual fluid chamber.
Claims (1)
動室内周面より内周側に設け、該通路入口より外
周側となる駆動板の断面形状を駆動板全周に亘つ
て作動室内周面に近接する部分を一頂点とするほ
ぼ鋭角三角形となし、該頂点と作動室内周面との
間で絞り部を形成し、駆動板の回転により粘性流
体を作動室から貯蔵室に循還させて、該流体の粘
性抵抗によりハウジングにトルク伝達させること
を特徴とするフアンドライブ装置。 The entrance of the passage discharged from the working chamber to the storage chamber is provided on the inner circumferential side of the working chamber circumferential surface, and the cross-sectional shape of the drive plate that is on the outer circumferential side of the passage entrance is set to the working chamber circumferential surface over the entire circumference of the drive plate. A substantially acute triangle is formed with the adjacent portion as one vertex, a constriction is formed between the vertex and the circumferential surface of the working chamber, and the viscous fluid is circulated from the working chamber to the storage chamber by rotation of the drive plate, A fan drive device characterized in that torque is transmitted to the housing by the viscous resistance of the fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13559779U JPS6216506Y2 (en) | 1979-09-28 | 1979-09-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13559779U JPS6216506Y2 (en) | 1979-09-28 | 1979-09-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5654333U JPS5654333U (en) | 1981-05-12 |
| JPS6216506Y2 true JPS6216506Y2 (en) | 1987-04-25 |
Family
ID=29367138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13559779U Expired JPS6216506Y2 (en) | 1979-09-28 | 1979-09-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6216506Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3378328D1 (en) * | 1982-10-12 | 1988-12-01 | Eaton Corp | Fluid coupling device with improved modulation capability |
| JPS606817U (en) * | 1983-06-28 | 1985-01-18 | 日野自動車株式会社 | Water pump drive mechanism in water-cooled engines |
-
1979
- 1979-09-28 JP JP13559779U patent/JPS6216506Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5654333U (en) | 1981-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2554862Y2 (en) | Temperature sensitive fluid type fan coupling device | |
| KR920001660B1 (en) | Thermo sensitive hydraulic fan coupling | |
| JP2898394B2 (en) | Thermo-sensitive fluid-type fan coupling device | |
| US4846331A (en) | Valve member of temperature sensitive fluid fan coupling | |
| US5452782A (en) | Temperature sensitive fluid-type fan coupling device | |
| US7650974B2 (en) | OD wiper | |
| KR100193326B1 (en) | Temperature Sensing Fluid Fan Coupling Device | |
| JPH0823376B2 (en) | Temperature-sensitive fluid type fan coupling device | |
| JP2010060140A (en) | Fan drive device assembly | |
| JP2541888Y2 (en) | Temperature sensitive fluid type fan coupling device | |
| JP2016031107A (en) | Thermosensitive fluid type fan clutch device | |
| JPS6216506Y2 (en) | ||
| US5117955A (en) | Temperature-controlled fluid friction coupling | |
| JPS6018666Y2 (en) | fan live | |
| JPH0733854B2 (en) | Preloaded control arm for viscous fluid clutch | |
| JPS6329950Y2 (en) | ||
| US4583625A (en) | Temperature responsive fluid coupling device | |
| JP2802289B2 (en) | Temperature sensitive fluid type fan coupling device | |
| JP3465342B2 (en) | Temperature sensitive fluid type fan coupling device | |
| JP4651139B2 (en) | Temperature-sensitive fluid type fan and coupling device | |
| JP4023144B2 (en) | Viscous fluid coupling device | |
| JPH0324905Y2 (en) | ||
| JPH07224862A (en) | Fluid type fan coupling device | |
| JPH0642108Y2 (en) | Temperature-sensitive fluid type fan coupling device | |
| JPS6238025Y2 (en) |