JP3077706B2 - Viscous damper - Google Patents
Viscous damperInfo
- Publication number
- JP3077706B2 JP3077706B2 JP03048016A JP4801691A JP3077706B2 JP 3077706 B2 JP3077706 B2 JP 3077706B2 JP 03048016 A JP03048016 A JP 03048016A JP 4801691 A JP4801691 A JP 4801691A JP 3077706 B2 JP3077706 B2 JP 3077706B2
- Authority
- JP
- Japan
- Prior art keywords
- damper
- grease
- rotating
- pair
- stirring
- 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 - Lifetime
Links
Landscapes
- Fluid-Damping Devices (AREA)
Description
【0001】[0001]
【産業上の利用分野】この発明は、例えば、磁気記録再
生装置などのカセット脱着装置に適用される粘性ダンパ
ーに関するものである。BACKGROUND OF THE INVENTION This invention is, for example, to a viscous damper that is applied to the cassette desorber such as a magnetic recording and reproducing apparatus.
【0002】[0002]
【従来の技術】図6および図7は従来のこの種の粘性ダ
ンパーの横断平面図および側断面図を示すもので、1は
本体部2の周囲に一体形成されている円筒状の固定板、
3はこの固定板1と本体部2との間に形成されたリング
状溝、4は本体部2の中心軸穴2aに枢支された軸4a
を有する回転板、5はこの回転板4から上記リング状溝
3内へ位置するように突き出している扇形状の4つの攪
拌板、6は回転板4を回転駆動する入力軸、7は上記リ
ング状溝3内に充填されたダンパーグリスである。6 and 7 show a cross-sectional plan view and a side sectional view of a conventional viscous damper of this type, wherein 1 is a cylindrical fixing plate integrally formed around a main body 2.
Reference numeral 3 denotes a ring-shaped groove formed between the fixing plate 1 and the main body 2, and 4 denotes a shaft 4a pivotally supported by a central shaft hole 2a of the main body 2.
Rotating plate 5 has four fan-shaped stirring plates protruding from the rotating plate 4 so as to be positioned in the ring-shaped groove 3, 6 is an input shaft for driving the rotating plate 4 to rotate, and 7 is the ring The damper grease is filled in the groove 3.
【0003】次に動作について説明する。図示しないカ
セット装着装置が駆動すると、入力軸6が回転し回転板
4と共に攪拌板5が回転し、リング状溝3内のダンパー
グリス7を攪拌する。これによって、ダンパーグリス7
は攪拌板5でかき分けられて固定板1および本体部2と
攪拌板5との隙間を通過するために粘性抵抗が発生す
る。この粘性抵抗は固定板1と攪拌板5との相対速度が
速いほど大きな抵抗となるので、入力軸6が急激な回転
変化を起こすと抵抗力が大きくなり、急激な回転変化は
阻止されて駆動力と粘性抵抗がバランスする速度でカセ
ット装着装置が動作する。Next, the operation will be described. When a cassette mounting device (not shown) is driven, the input shaft 6 rotates, and the stirring plate 5 rotates together with the rotating plate 4 to stir the damper grease 7 in the ring-shaped groove 3. Thereby, the damper grease 7
Are separated by the stirring plate 5 and pass through the gap between the fixed plate 1 and the main body 2 and the stirring plate 5, so that viscous resistance is generated. This viscous resistance increases as the relative speed between the fixed plate 1 and the stirring plate 5 increases, so that when the input shaft 6 undergoes a rapid rotation change, the resistance increases, and the rapid rotation change is prevented and the drive is stopped. The cassette mounting device operates at a speed at which the force and the viscous resistance balance.
【0004】[0004]
【発明が解決しようとする課題】従来の粘性ダンパーは
以上のように構成されているので、カセット装着装置に
組み込むとカセットの装着時および取り外し時も右また
は左回転してダンパー効果を発生する。このためカセッ
ト取り外しのときカセットが急激に飛び出さないように
ダンパー効果を設定すると、カセット装着時に大きな操
作力を必要とするために、他の構成部品に過大な力が作
用して部品の破損などが生じるといった問題があった。Since the conventional viscous damper is configured as described above, if it is incorporated in a cassette mounting device, it rotates clockwise or counterclockwise when the cassette is mounted or removed, thereby producing a damper effect. For this reason, if the damper effect is set so that the cassette does not suddenly pop out when removing the cassette, a large operation force is required at the time of mounting the cassette, so excessive force acts on other components and damage to the component etc. There was a problem that occurs.
【0005】この発明は上記のような問題点を解消する
ためになされたもので、右回転と左回転とでダンパー効
果の異なる粘性ダンパーを得ることを目的とする。The present invention has been made to solve the above problems, and has as its object to obtain a viscous damper having a different damper effect between clockwise rotation and counterclockwise rotation.
【0006】[0006]
【課題を解決するための手段】この発明に係る粘性ダン
パーは、軸の周囲にリング状の連続した通路を形成する
溝を設け、上記溝にダンパーグリスを充填した固定部
と、上記軸に支持され、上記溝のダンパーグリス内に位
置する攪拌部を有する回転部とを有し、上記回転部の回
転時に上記ダンパーグリスが上記攪拌部に対するダンパ
ーとなるようにしたものにおいて、上記攪拌部の回転方
向端面部の一方に固定され、互いに離隔した一対の弾性
延在部を有するたわみ部を備え、上記回転部の所定方向
への回転時に、上記攪拌部が上記通路に沿って移動し、
上記一対の弾性延在部が上記ダンパーグリスの抵抗によ
って先端部の間隔を拡げることにより上記通路の隙間を
狭めると共に、上記回転部の逆方向への回転時に、上記
一対の彊性延在部が上記ダンパーグリスの圧力によって
先端部の間隔を狭めることにより、上記通路の隙間を広
くするようにしたものである。A viscous damper according to the present invention is provided with a groove which forms a continuous ring-shaped passage around a shaft, and a fixing portion in which the groove is filled with damper grease; is supported on the shaft, and a rotating part having a stirring unit located in the damper grease of the groove, in which the damper grease during rotation of the rotating portion is set to be a damper for the stirring unit, the fixed to one of the rotational direction end face of the stirring unit, provided with a deflection unit having a pair of elastic extending portions which are separated from each other, during rotation in a predetermined direction of the rotating part, the stirring portion along the path movement And
The pair of elastic extension portions increase the distance between the distal end portions by the resistance of the damper grease, thereby reducing the gap in the passage.
While rotating the rotating part in the opposite direction,
A pair of Jiangyin extension is caused by the pressure of the above damper grease
The gap between the above passages is widened by reducing the distance between the tips.
It is intended to make it .
【0007】[0007]
【作用】この発明においては、回転部の所定方向への回
転時に、攪拌部が通路に沿って移動し、攪拌部に固定さ
れた一対の弾性延在部がダンパーグリスの抵抗によって
先端部の間隔を拡げることにより涌路の隙間を狭めると
共に、回転部の逆方向への回転時に、ダンパーグリスの
圧力によって一対の弾性延在部の先端部の間隔が狭めら
れることにより、通路の隙間を広くして粘性抵抗を変え
るものである。 According to the present invention, the rotation of the rotating portion in a predetermined direction is performed.
During rolling, stirring unit moves along the path, the resistance of the pair of elastic extending portions Hurghada Npagurisu fixed to the stirring unit
By narrowing the gap between the shores by widening the distance between the tips
Both during rotation in the opposite direction of the rotating portion, Da Npagurisu
The distance between the distal ends of the pair of elastic extension portions is reduced by pressure .
This increases the gap in the passage to change the viscous resistance .
【0008】[0008]
【実施例】以下、この発明の一実施例を図面について説
明する。図1および図2はこの発明による粘性ダンパー
の横断平面図および側断面図を示し、1は本体部2の周
囲に一体形成されている円筒状の固定板で、本体部2と
共に固定部を構成する。3は上記固定板1と本体部2と
の間で、リング状の連続した通路を形成し、後述する回
転板の360度以上の回転を許容するリング状溝、4は
本体部2の中心軸穴2aに枢支された軸4aを有する回
転板、5はこの回転板4から上記リング状溝3内へ位置
するように突き出している扇形状の4つの攪拌板からな
る攪拌部で、上記回転板と共に回転部を構成する。6は
回転板4に固定され、回転部を回転駆動する入力軸、7
は上記リング状溝3内に充填されたダンパーグリスであ
り、上記構成は図6および図7で説明した従来例の粘性
ダンパーと同一である。8は上記攪拌板5の回転方向端
面部の一方(実施例では反時計回り側)にそれぞれ固定
されたたわみ部で、V溝状に一対の弾性延在部が互いに
離隔するように形成され、全体としては図3に斜視図を
示すように攪拌板5に対して縦方向に形成された形とな
つている。An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show a cross-sectional plan view and a side sectional view of a viscous damper according to the present invention. Reference numeral 1 denotes a cylindrical fixing plate integrally formed around a main body 2, which constitutes a fixing section together with the main body 2. I do. Reference numeral 3 denotes a ring-shaped continuous passage formed between the fixed plate 1 and the main body 2 and a circuit to be described later.
A ring-shaped groove allowing rotation of the rotary plate by 360 degrees or more ; 4 a rotary plate having a shaft 4a pivotally supported by a central shaft hole 2a of the main body 2; The agitating unit is composed of four fan-shaped agitating plates protruding so as to be positioned together with the rotating plate and constitutes a rotating unit. Reference numeral 6 denotes an input shaft fixed to the rotating plate 4 for driving the rotating unit to rotate.
Is a damper grease filled in the ring-shaped groove 3 and has the same configuration as that of the conventional viscous damper described with reference to FIGS. Reference numerals 8 denote flexures fixed to one of the end faces in the rotation direction of the agitating plate 5 (counterclockwise in the embodiment). A pair of elastic extension portions are formed in a V-groove shape so as to be separated from each other. As a whole, as shown in a perspective view in FIG. 3, the shape is formed in a vertical direction with respect to the stirring plate 5.
【0009】次に上記のように構成したこの発明による
粘性ダンパーの動作について説明する。図示しないカセ
ット装着装置が動作することで入力軸6が回転し、回転
板4と共に攪拌板5が通路に沿って反時計方向に回転す
ると、ダンパーグリス7が攪拌される。この攪拌動作に
おいて図4に示すようにダンパーグリス7がたわみ部8
の一対の弾性延在部間のV字溝内に入り込み、各弾性延
在部の先端部が図示矢印のように押し拡げられ、固定板
1と本体部2との隙間を狭める。これによってダンパー
グリス7は上記小さな隙間を通過するために通常より大
きな粘性抵抗が発生し、ダンパー効果が増大する。Next, the operation of the viscous damper according to the present invention configured as described above will be described. The damper grease 7 is stirred when the input shaft 6 is rotated by the operation of the cassette mounting device (not shown) and the stirring plate 5 rotates counterclockwise along the passage along with the rotating plate 4. In this stirring operation, as shown in FIG.
Of the pair of elastic extension portions, the distal end portions of the respective elastic extension portions are pushed and expanded as shown by arrows in the figure, and the gap between the fixing plate 1 and the main body 2 is narrowed. As a result, the damper grease 7 passes through the small gap, so that a larger viscous resistance is generated than usual, and the damper effect is increased.
【0010】一方、攪拌板5が図5に示すように通路に
沿って時計方向に回転する場合は、ダンパーグリス7が
たわみ部8の一対の弾性延在部間のV字溝内に強制的に
入り込むこともなく周りからのダンパーグリスの圧力で
図示矢印のように、一対の弾性延在部間の先端部が押し
すぼめられて攪拌板5と固定板1および本体部2との隙
間が広くなり、この結果、通常より粘性抵抗が小さくな
ってダンパー効果を減少させることができる。On the other hand, agitating plate 5 is in the passage, as shown in FIG. 5
In the case where the damper grease 7 rotates clockwise, the damper grease 7 does not forcibly enter the V-shaped groove between the pair of elastic extension portions of the bending portion 8 and the pressure of the damper grease from the surroundings as shown by the arrow in the drawing. In addition, the distal end between the pair of elastic extension portions is pressed and narrowed, and the gap between the stirring plate 5 and the fixed plate 1 and the main body 2 is widened. As a result, the viscous resistance is smaller than usual, and the damper effect is reduced. Can be done.
【0011】 また、たわみ部8の弾性延在部は実施例で
はその可動方向を回転板4の軸4aと直交する方向とし
たが、軸4aの延長方向に可動するようにしても上記と
同様の作用が得られる。 Further, although the elastic extension of the flexible portion 8 Example was a direction perpendicular to the moving direction and the axis 4a of the rotary plate 4, similarly to be movable in the extending direction of the shaft 4a the Is obtained.
【0012】[0012]
【発明の効果】以上説明したようにこの発明によれば、
ダンパーグリス内を通路に沿って移動(回転)する攪拌
部の回転方向によってたわみ部の弾性延在部の先端部の
間隔を可変させ、攪拌部を通過するダンパーグリスの通
路面積を可変させてダンパー特性を変えるようにしたの
で、回転方向によってダンパー効果の異なる粘性ダンパ
ーが得られる。これによって、例えばカセット脱着装置
に適用した場合のカセット装着時における構成部品の破
損事故を未然に防止することができる。As explained above, according to the present invention,
Agitation that moves (rotates) along the passage in the damper grease
Of the tip of the elastic extension of the flexure
Since the interval is varied and the passage area of the damper grease passing through the stirring section is varied to change the damper characteristics, a viscous damper having a different damper effect depending on the rotation direction can be obtained. Thereby, for example, a cassette detaching device
In this case, it is possible to prevent a component from being damaged when the cassette is mounted.
【図1】この発明の一実施例による粘性ダンパーの横断
平面図である。FIG. 1 is a cross-sectional plan view of a viscous damper according to one embodiment of the present invention.
【図2】この発明による粘性ダンパーの側断面図であ
る。FIG. 2 is a side sectional view of a viscous damper according to the present invention.
【図3】攪拌板およびたわみ部の斜視図である。FIG. 3 is a perspective view of a stirring plate and a bending portion.
【図4】この発明による粘性ダンパーの粘性抵抗を高く
した状態の動作説明図である。FIG. 4 is an operation explanatory view in a state where the viscous resistance of the viscous damper according to the present invention is increased.
【図5】この発明による粘性ダンパーの粘性抵抗を低く
した状態の動作説明図である。FIG. 5 is an operation explanatory view in a state where the viscous resistance of the viscous damper according to the present invention is reduced.
【図6】従来の粘性ダンパーの横断平面図である。FIG. 6 is a cross-sectional plan view of a conventional viscous damper.
【図7】従来の粘性ダンパーの側断面図である。FIG. 7 is a side sectional view of a conventional viscous damper.
1 固定板 2 本体部 3 リング状溝 4 回転板 5 攪拌板 6 入力軸 7 ダンパーグリス 8 たわみ部 DESCRIPTION OF SYMBOLS 1 Fixed plate 2 Main body 3 Ring-shaped groove 4 Rotating plate 5 Stirring plate 6 Input shaft 7 Damper grease 8 Flexure
フロントページの続き (56)参考文献 特開 昭62−13874(JP,A) 実開 昭60−138032(JP,U) 実開 昭56−127470(JP,U) 実開 昭55−22517(JP,U) 実開 昭62−75723(JP,U) 実開 平1−77151(JP,U) (58)調査した分野(Int.Cl.7,DB名) F16F 9/12 G11B 15/675 Continuation of the front page (56) References JP-A-62-13874 (JP, A) JP-A-60-138032 (JP, U) JP-A-56-127470 (JP, U) JP-A-55-22517 (JP) , U) Shokai 62-75723 (JP, U) Shokai 1-77151 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) F16F 9/12 G11B 15/675
Claims (1)
成する溝を設け、上記溝にダンパーグリスを充填した固
定部と、上記軸に支持され、上記溝のダンパーグリス内
に位置する攪拌部を有する回転部とを有し、上記回転部
の回転時に上記ダンパーグリスが上記攪拌部に対するダ
ンパーとなるようにしたものにおいて、上記攪拌部の回
転方向端面部の一方に固定され、互いに離隔した一対の
弾性延在部を有するたわみ部を備え、上記回転部の所定
方向への回転時に、上記攪拌部が上記通路に沿って移動
し、上記一対の弾性延在部が上記ダンパーグリスの抵抗
によって先端部の間隔を拡げることにより上記通路の隙
間を狭めると共に、上記回転部の逆方向への回転時に、
上記一対の弾性延在部が上記ダンパーグリスの圧力によ
って先端部の間隔を狭めることにより、上記通路の隙間
を広くするようにしたことを特徴とする粘性ダンパー。1. A ring-shaped continuous passage is formed around a shaft.
A groove formed provided a fixing unit filled with damper grease to the groove, is supported on the shaft, and a rotating part having a stirring unit located in the damper grease of the groove, during rotation of the rotating part The damper grease serves as a damper for the agitating section, wherein the damper grease includes a bending section fixed to one of end faces in the rotation direction of the agitating section and having a pair of elastic extending portions separated from each other. When rotating in a predetermined direction, the stirring section moves along the passage.
Then, the pair of elastic extension portions increase the distance between the tip portions by the resistance of the damper grease, so that the gap of the passage is formed.
While narrowing the interval, when rotating the rotating part in the opposite direction,
The pair of elastic extension portions are caused by the pressure of the damper grease.
The gap between the above passages is
Viscous damper being characterized in that so as to be widely.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP03048016A JP3077706B2 (en) | 1991-03-13 | 1991-03-13 | Viscous damper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP03048016A JP3077706B2 (en) | 1991-03-13 | 1991-03-13 | Viscous damper |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04285336A JPH04285336A (en) | 1992-10-09 |
JP3077706B2 true JP3077706B2 (en) | 2000-08-14 |
Family
ID=12791512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP03048016A Expired - Lifetime JP3077706B2 (en) | 1991-03-13 | 1991-03-13 | Viscous damper |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3077706B2 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5277282A (en) * | 1992-10-20 | 1994-01-11 | Kato Hatsujo Kaisha, Ltd. | Rotary oil damper |
JPH0710575U (en) * | 1993-07-14 | 1995-02-14 | トックベアリング株式会社 | Opening / closing member operation shock absorber |
DE19655100B4 (en) * | 1996-07-19 | 2007-12-20 | Kendrion Rsl Gmbh & Co. Kg | Damping device for a handle in a motor vehicle |
EP1729031B1 (en) * | 2001-11-27 | 2010-04-14 | Kabushiki Kaisha Somic Ishikawa | Rotary damper, auto part having rotary damper and rotational motion assistant mechanism |
DE102006021944A1 (en) | 2006-05-11 | 2007-11-15 | Trw Automotive Gmbh | rotary damper |
JP4992978B2 (en) * | 2009-03-11 | 2012-08-08 | トヨタ自動車株式会社 | Viscous coupling and suspension device |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5926193A (en) * | 1982-08-05 | 1984-02-10 | Takuma Co Ltd | Apparatus for filthy water disposal |
-
1991
- 1991-03-13 JP JP03048016A patent/JP3077706B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH04285336A (en) | 1992-10-09 |
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