JPS63275824A - Rotary damper - Google Patents
Rotary damperInfo
- Publication number
- JPS63275824A JPS63275824A JP10634187A JP10634187A JPS63275824A JP S63275824 A JPS63275824 A JP S63275824A JP 10634187 A JP10634187 A JP 10634187A JP 10634187 A JP10634187 A JP 10634187A JP S63275824 A JPS63275824 A JP S63275824A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- rotary piston
- rotor shaft
- liquid chamber
- rotary
- 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
Links
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 238000005192 partition Methods 0.000 claims abstract description 10
- 238000000638 solvent extraction Methods 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000013016 damping Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/145—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only rotary movement of the effective parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/20—Type of damper
- B60G2202/22—Rotary Damper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/20—Type of damper
- B60G2202/24—Fluid damper
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業[−の利用分野〉
本発明は、各種機械、器具の回転軸をソフトに緩WE停
止させるだめのロータリーダンパに関する。DETAILED DESCRIPTION OF THE INVENTION <Field of Application in Industry> The present invention relates to a rotary damper for softly and gently stopping the rotating shafts of various machines and instruments.
〈従来例および問題点〉
従来より、この種のロータリーダンパとしては、受動軸
にコイルスプリングを配設してその弾発力により回転外
力をダンピングするもの、又は液体室内で回転する受動
軸の周面に液体の粘性抵抗を作用させ若しくは、これと
併用して液体シールのゴム製Oリングとの摺動摩擦力を
作用させてダンピングさせるものが知られている。<Conventional Examples and Problems> Traditionally, this type of rotary damper has either a coil spring disposed on the passive shaft and damping external rotational force using the elastic force of the coil spring, or a rotary damper that damps external rotational force using the elastic force of a coil spring disposed on the passive shaft, or a rotary damper that uses a coil spring around the passive shaft that rotates in a liquid chamber. It is known to apply damping by applying the viscous resistance of the liquid to the surface or, in combination with this, applying the sliding friction force with the rubber O-ring of the liquid seal.
しかるに、前者のものにあっては、外力が消失した後に
スプリングバックにより受動軸に対する逆転力が発生す
るので、外部機器の回転部分を停止したままで所定時間
維持する場合等には不都合である。However, in the former case, a reversing force is generated on the passive shaft due to springback after the external force disappears, which is inconvenient when the rotating part of an external device is kept stopped for a predetermined period of time.
また、後者のものにあっては、液体室内の流体が受動用
ロータとともに流動してしまうため、大きな制動トルク
を得ることはできない、従って、大きな外部回転力を急
速かつ滑らかに制動させることは困難である。また。In addition, in the latter case, the fluid in the liquid chamber flows together with the passive rotor, making it impossible to obtain large braking torque. Therefore, it is difficult to brake large external rotational forces quickly and smoothly. It is. Also.
、I−1人液体の粘性抵抗が温度によって変化し易いた
め、一定の制動トルクを保持し難い。, I-1 Since the viscous resistance of the liquid tends to change depending on the temperature, it is difficult to maintain a constant braking torque.
さらに、0リングと受動ロータとの摩擦抵抗を利用する
ものにあっては、0リングとの圧接力を一定に調整する
ことがむずかしいこと、0リングの摩耗により摩擦抵抗
の減退があること、つやのケ点がある。Furthermore, with devices that utilize the frictional resistance between the O-ring and the passive rotor, it is difficult to adjust the pressure contact force with the O-ring to a constant level, the frictional resistance decreases due to wear of the O-ring, and the luster of the rotor decreases. There are several points.
く問題点を解決するための1段〉
未発IJIは、」二記の欠点を除去するために提案され
たものであり。The first step to solving the above problems: The unreleased IJI was proposed to eliminate the drawbacks mentioned in Section 2 above.
その目的は、lit体がオリフィスを通過する際に、そ
の圧動エネルギーが然エネルギーに変化することを利用
して、受動用のロータ軸に対して大きな制動トルクを滑
らかに発生させることのできるロータリーダンパを提供
することにある。The purpose is to create a rotary system that can smoothly generate large braking torque against the passive rotor shaft by utilizing the change of pressure energy into natural energy when the lit body passes through the orifice. The purpose is to provide a damper.
本発明の他の目的は、ロータ軸の正逆回転方向別にオリ
フィスの断面積に差を設けることにより、ダンピング時
には大きな制動トルクを発生させるとともに、逆転時に
は小さな液体抵抗として速やかな復帰を回部としたロー
タリーダンパを提供することにある。Another object of the present invention is to create a difference in the cross-sectional area of the orifice depending on the forward and reverse rotation directions of the rotor shaft, thereby generating a large braking torque during damping, and at the same time generating a small liquid resistance during reversing, allowing quick return to the rotating part. Our objective is to provide a rotary damper with improved performance.
本発明の更に他の目的は、外部機器の回転部分の端末部
だけでなく、中間部分へも取付けn(能なロータリーダ
ンパを提供することにある。Still another object of the present invention is to provide a rotary damper that can be attached not only to the terminal portion of a rotating portion of an external device but also to an intermediate portion thereof.
而して、上記本発明の目的は、「液体を封入したケーシ
ングと、該ケーシングの液体室を貫通して回転自在に配
設され、その一端または両端がケーシング外に臨むよう
に設けられたロータ軸と、該ロータ軸の軸心に沿って液
体室を仕切るための1以−Lの固定隔壁と。Therefore, the object of the present invention is to provide a casing that seals in a liquid, and a rotor that is rotatably disposed through the liquid chamber of the casing, with one or both ends facing outside the casing. a shaft; and a fixed partition of 1 to 1 L for partitioning a liquid chamber along the axis of the rotor shaft.
該ロータ軸の軸心方向周面に突出形成され、かつ1以上
の液流用オリフィスが、役けられたロータリーピストン
と、からなるロータリーダンパJによって達成される。A rotary damper J is formed protruding from the circumferential surface of the rotor shaft in the axial direction, and includes a rotary piston that serves as one or more liquid flow orifices.
〈実施例〉
次に、本発明を図面に示された一実施例に従って、更に
詳しく説明することとする。<Example> Next, the present invention will be explained in more detail according to an example shown in the drawings.
第1〜3図には、第一の実施例が示されている。(1)
は本発明に係るロータリーダンパ。A first embodiment is shown in FIGS. 1-3. (1)
is a rotary damper according to the present invention.
(2)はその外筺ケーシングであり1本実施例ではl二
下二部材に分;1,1されており、ネジ部(2a)で螺
合している。(3)は螺合部シール用のOリングである
。Reference numeral (2) denotes the outer casing, and in this embodiment, it is divided into two lower members; 1, 1, and is screwed together with a threaded portion (2a). (3) is an O-ring for sealing the threaded part.
(4)はロータ軸であり、その両端部がケーシング(2
)の上下端において外部に臨むように液体室(5)を貫
通して正逆回転自在に配設されている。而して、該ロー
タ軸(4)は中空に形成されており、ダシピングすべき
外部機・器の被回転部分(図示せず)を挿入して連結し
得るように設けられている。 (4a)は連結固定用の
キー溝、(H))(4c)は抜は止めリブ部。(4) is the rotor shaft, and both ends thereof are the casing (2).
) are disposed so as to be rotatable in forward and reverse directions, passing through the liquid chamber (5) so as to face the outside at the upper and lower ends of the liquid chamber (5). The rotor shaft (4) is formed hollow, and is provided so that a rotated portion (not shown) of an external machine/device to be dashed can be inserted thereinto and connected thereto. (4a) is a keyway for fixing the connection, (H) and (4c) are ribs to prevent removal.
(6d)は液体シール用のOリングである。(6d) is an O-ring for liquid sealing.
(7)はロータリーピストンであり、ロータ軸(4)の
周面において軸心方向に沿ってブレード状に突出して形
成されている。 (71)はロータリーピストン(7)
の両側に貫通するように穿設されたオリフィスである。(7) is a rotary piston, which is formed to protrude in the shape of a blade along the axial direction on the circumferential surface of the rotor shaft (4). (71) is a rotary piston (7)
This is an orifice drilled through both sides of the
(8)は液体室(5)をロータ軸の軸心方向にλ1って
仕切るための固定隔壁であり、ケーシング(2)に一体
重に連設され、その内端縁はロータ軸(4)の周面に液
密に接している。(8) is a fixed partition for partitioning the liquid chamber (5) by λ1 in the axial direction of the rotor shaft, and is integrally connected to the casing (2), and its inner edge is connected to the rotor shaft (4). is in liquid-tight contact with the surrounding surface of the
しかして、液体室(5)は固定隔壁(8)とロータリー
ピスト7(7)とにより、縦;!;qりの二つの部Jl
(5a)(5b)に仕切られている。Therefore, the liquid chamber (5) is formed vertically by the fixed partition wall (8) and the rotary piston 7 (7). ;qri's two parts Jl
It is divided into (5a) and (5b).
ここで、ロータ軸(0が第3図矢印(1)方向に回転せ
しめられると、ロータリピストン(7)も同方向に回転
せしめられる。このとき、ロータリーピストン(7)は
部71(5a)内の液体の強い抵抗を受けるのでロータ
軸(4)に大きな制動トルクが生じて外部回転力がタン
ピングされる。而して、オリフィス(71)の孔径およ
び/又は数を必要に応じて選択すること、液体室(5)
に」−(人する液体を用途に応じてシリコンオイル、グ
リス、ワックス等適宜のものを使用することは本発明に
含まれる実施例である。Here, when the rotor shaft (0) is rotated in the direction of arrow (1) in Fig. 3, the rotary piston (7) is also rotated in the same direction. Since the rotor shaft (4) is subjected to strong resistance from the liquid, a large braking torque is generated on the rotor shaft (4), and the external rotational force is tamped.Thus, the diameter and/or number of the orifices (71) can be selected as necessary. , liquid chamber (5)
It is an embodiment included in the present invention to use an appropriate liquid such as silicone oil, grease, wax, etc. depending on the purpose.
なお、この実施例の場合におけるロータ軸(4)は略3
50〜355度の回転角の範囲でのダンピングをof能
としたものである。Note that the rotor shaft (4) in this embodiment is approximately 3
Damping is possible within a rotation angle range of 50 to 355 degrees.
第4図には、二つの固定隔壁(81)(82)をロータ
軸(4)を挟んで対向して配置するとともに、ロータ軸
(4)にも二つのロータリーピストン(7a)(7b)
を設けることにより、液体室(5)を縦11.1に仕切
られるようにした実施例が示されている。この場合は、
ロータ軸(4)の正逆回転角が略170〜175度の範
囲でダンピング作用を発生させるものに適する。In Fig. 4, two fixed partition walls (81) and (82) are arranged to face each other with the rotor shaft (4) in between, and two rotary pistons (7a and 7b) are also arranged on the rotor shaft (4).
An embodiment is shown in which the liquid chamber (5) is partitioned vertically into 11.1 sections. in this case,
It is suitable for a device that generates a damping effect in a range where the forward/reverse rotation angle of the rotor shaft (4) is approximately 170 to 175 degrees.
第5.6,7図にはロータリーピストン(7)の回転方
向により、液体抵抗の強さが変化するように設けた実施
例が示されている。5.6 and 7 show an embodiment in which the strength of liquid resistance changes depending on the direction of rotation of the rotary piston (7).
すなわち、第5図にはオリフィス(71)の開【1部に
板弁(75)を取り付けることにより、矢印(r)方向
ヘロータ軸(4)が回動する際にはオリフィス(71)
が閉じて大きな制動力が生じるとともに、逆転時には液
圧により板弁(75)が開いてオリフィス(71)での
液流を可爺として速やかに復帰回転ができるものが示さ
れ−Cいる。That is, in FIG. 5, by attaching a plate valve (75) to one part of the orifice (71), when the rotor shaft (4) rotates in the direction of arrow (r), the orifice (71) opens.
Closes to generate a large braking force, and at the same time, during reverse rotation, the plate valve (75) opens due to hydraulic pressure to increase the liquid flow at the orifice (71), allowing for quick return rotation.
第6図に示すものは、上記板弁(75)に代えてゴムポ
ール(76)を配設したチェックバルブ構造のものであ
り、第5図の場合と同様の作用、効果を有する。The check valve shown in FIG. 6 has a check valve structure in which a rubber pole (76) is provided in place of the plate valve (75), and has the same functions and effects as the case shown in FIG.
第7図に示すものは、ロータリーピストン(7)に大小
の異孔径のオリフィス(71)(72)を・対として配
設し、それぞれゴムポール(76)(77)によってチ
ェック方向を逆とするチェックバルブ構造としたもので
あり、ロータリーピストン(7)の正逆回転方向により
回動スピードに差を1没けたものである。この場合にも
前記5図と同様の作用、効果を有するものである。The one shown in Fig. 7 is a check in which a rotary piston (7) is provided with orifices (71) and (72) of different diameters as a pair, and the checking direction is reversed by rubber poles (76 and 77), respectively. It has a valve structure, and there is a difference in rotational speed by one subtraction depending on the forward and reverse rotation directions of the rotary piston (7). In this case as well, the same functions and effects as in FIG. 5 are obtained.
く効 果〉
本発明によれば、液体室内に固定隔壁を設けることによ
り、ロータリーピストンの回転と同方向への液体移動を
阻Iにし、液体の流動をオリフィスおよびピストンとケ
ーシング内面とのギャップ部のみとしたので、該ロータ
リーピストンに対する液体抵抗の制御調整を正確かつ容
易に行なうことができるとともに、大きな制動トルクを
滑らかに発生させることができる。Effect> According to the present invention, by providing a fixed partition in the liquid chamber, the movement of liquid in the same direction as the rotation of the rotary piston is prevented, and the flow of liquid is directed to the orifice and the gap between the piston and the inner surface of the casing. Therefore, the liquid resistance to the rotary piston can be controlled and adjusted accurately and easily, and a large braking torque can be smoothly generated.
また、オリフィスにバルブ機構を設けることにより、ダ
ンピング時にはピストンに大キな制動力をゆっくりと作
用するとともに、逆転復帰時には小さな制動トルクで速
やかに回転し得るものである。Further, by providing a valve mechanism in the orifice, a large braking force is slowly applied to the piston during damping, and the piston can be rotated quickly with a small braking torque during reverse return.
更に、ロータ軸(4)を中空軸とすることにより、適用
機器の被制動軸へ直接底め付けることができる。特に、
該被制動軸の端末部に限らず、その中間部に挿着するこ
とができるものである。尤も、該ロータ軸の中空部へ着
脱可能なアタッチメント軸を用意して被制動軸に連結す
ることも本発明に含まれる実施例である。Furthermore, by making the rotor shaft (4) a hollow shaft, it can be directly bottom-fitted to the braked shaft of the applicable equipment. especially,
It can be inserted not only at the end portion of the braked shaft but also at the intermediate portion thereof. Of course, it is also an embodiment of the present invention to prepare an attachment shaft that can be attached to and detached from the hollow portion of the rotor shaft and connect it to the braked shaft.
第1図は本発明に係るロータリーダンパの一実施例を示
す斜視図、第2図は第1図におけるII −II線断面
図、第3図は■−■線断面図、第4図は他の実施例にお
ける横断面図、第5〜7図はオリフィスの他の実施例を
示す一部省略横断面図、である。
(2)・・・・・・ ケーシング、
(4)・・・・・・ ロータ軸、
(5)・・・・・・ 液体室、
(7)・・・・・・ ロータリーピストン、(8)・・
・・・・ 固定隔壁、
(71)(72)・・・・・・オリフィス。
(71)(72)・・・・・・オリフィス。Fig. 1 is a perspective view showing an embodiment of a rotary damper according to the present invention, Fig. 2 is a sectional view taken along the line II-II in Fig. 1, Fig. 3 is a sectional view taken along the line ■-■, and Fig. 4 is a sectional view taken along the line II--II in Fig. 1. FIGS. 5 to 7 are partially omitted cross-sectional views showing other embodiments of the orifice. (2)...Casing, (4)...Rotor shaft, (5)...Liquid chamber, (7)...Rotary piston, (8)・・・
... Fixed bulkhead, (71) (72) ... Orifice. (71) (72)... Orifice.
Claims (1)
、各液体室ごとにロータリーピ ストンが配設されてなる前記特許請求の範 囲第1項記載のロータリーダンパ。 3、液流用のオリフィスにバルブを設けることにより、
ロータリーピストンの回転方向 の正逆に応じて液体抵抗を変化せしめてな る前記特許請求の範囲第1項記載のロータ リーダンパ。[Claims] 1. A casing containing a liquid; a rotor shaft that is rotatably disposed through the liquid chamber of the casing, with one or both ends thereof facing outside the casing; one or more fixed partition walls for partitioning a liquid chamber along the axial center of the rotor shaft; a rotary piston that protrudes from the circumferential surface in the axial direction of the rotor shaft and is provided with one or more liquid flow orifices; A rotary damper consisting of. 2. The rotary damper according to claim 1, wherein the liquid chamber is divided into two or more by a plurality of fixed partition walls, and a rotary piston is provided for each liquid chamber. 3. By installing a valve in the orifice for liquid flow,
The rotary damper according to claim 1, wherein the liquid resistance is changed depending on whether the rotary piston is rotated in a forward or reverse direction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10634187A JPS63275824A (en) | 1987-05-01 | 1987-05-01 | Rotary damper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10634187A JPS63275824A (en) | 1987-05-01 | 1987-05-01 | Rotary damper |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63275824A true JPS63275824A (en) | 1988-11-14 |
Family
ID=14431133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10634187A Pending JPS63275824A (en) | 1987-05-01 | 1987-05-01 | Rotary damper |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63275824A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02141591U (en) * | 1989-04-25 | 1990-11-28 | ||
JPH05149449A (en) * | 1991-11-27 | 1993-06-15 | Kubota Corp | Butterfly valve |
US7175008B2 (en) * | 2002-11-08 | 2007-02-13 | Itw Industrial Components S.R.L. | High-resistance decelerating device, particularly for insertion between two members in relative motion |
JP2013248922A (en) * | 2012-05-30 | 2013-12-12 | Kyowa Sangyo Kk | Vehicular sun visor |
JP2013252805A (en) * | 2012-06-07 | 2013-12-19 | Kyowa Sangyo Kk | Vehicle sun visor |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5520270A (en) * | 1978-07-31 | 1980-02-13 | Japan Atom Energy Res Inst | Production of ruthenium tetraoxide |
JPS6164499A (en) * | 1984-09-07 | 1986-04-02 | オムロン株式会社 | Umbrella |
-
1987
- 1987-05-01 JP JP10634187A patent/JPS63275824A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5520270A (en) * | 1978-07-31 | 1980-02-13 | Japan Atom Energy Res Inst | Production of ruthenium tetraoxide |
JPS6164499A (en) * | 1984-09-07 | 1986-04-02 | オムロン株式会社 | Umbrella |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02141591U (en) * | 1989-04-25 | 1990-11-28 | ||
JPH05149449A (en) * | 1991-11-27 | 1993-06-15 | Kubota Corp | Butterfly valve |
US7175008B2 (en) * | 2002-11-08 | 2007-02-13 | Itw Industrial Components S.R.L. | High-resistance decelerating device, particularly for insertion between two members in relative motion |
JP2013248922A (en) * | 2012-05-30 | 2013-12-12 | Kyowa Sangyo Kk | Vehicular sun visor |
JP2013252805A (en) * | 2012-06-07 | 2013-12-19 | Kyowa Sangyo Kk | Vehicle sun visor |
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