JP2000220681A - Variable spring constant type viscous fluid sealed damper - Google Patents
Variable spring constant type viscous fluid sealed damperInfo
- Publication number
- JP2000220681A JP2000220681A JP2595299A JP2595299A JP2000220681A JP 2000220681 A JP2000220681 A JP 2000220681A JP 2595299 A JP2595299 A JP 2595299A JP 2595299 A JP2595299 A JP 2595299A JP 2000220681 A JP2000220681 A JP 2000220681A
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- viscous fluid
- damper
- vibration
- lid
- 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
- 239000012530 fluid Substances 0.000 title claims abstract description 38
- 238000003756 stirring Methods 0.000 claims abstract description 20
- 238000013016 damping Methods 0.000 claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 2
- 229910000828 alnico Inorganic materials 0.000 claims description 2
- 239000010962 carbon steel Substances 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- 239000010941 cobalt Substances 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- 239000013013 elastic material Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- LDHBWEYLDHLIBQ-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide;hydrate Chemical compound O.[OH-].[O-2].[Fe+3] LDHBWEYLDHLIBQ-UHFFFAOYSA-M 0.000 claims description 2
- 239000000696 magnetic material Substances 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910000889 permalloy Inorganic materials 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 21
- 239000002184 metal Substances 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 229920001971 elastomer Polymers 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 3
- 239000011347 resin Substances 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract 2
- 238000012937 correction Methods 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 230000001133 acceleration Effects 0.000 description 5
- 238000013459 approach Methods 0.000 description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 239000004519 grease Substances 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007542 hardness measurement Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Combined Devices Of Dampers And Springs (AREA)
- Vibration Prevention Devices (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Description
【０００１】本発明は、音響機器や光ディスク等の情報
機器、あるいは精密電子機器等に使用され、外部からの
振動を吸収する防振装置、特に車載用の光ディスク等の
カーエレクトロニクスの防振に用いられる粘性流体封入
式ダンパーに関するものである。The present invention is used for information equipment such as audio equipment and optical discs, or precision electronic equipment, and is used for damping vibrations from outside, especially for car electronics such as optical discs for vehicles. The present invention relates to a viscous fluid-filled damper to be used.
【０００２】[0002]
【従来の技術】粘性流体封入式ダンパーは、音響機器、
情報機器、特に車載用ＣＤプレーヤーに内蔵され、その
ダンパー内部に充填された粘性流体の粘性流動抵抗によ
り外部からプレーヤー内部のピックアップメカニズムに
伝達される振動を吸収する優れた防振特性を持つ。この
粘性流体封入式ダンパーは防振する被支持体であるピッ
クアップメカニズムの重量や、そのバランスによって金
属製の引張りまたは圧縮スプリングと併用されることも
ある。2. Description of the Related Art Viscous fluid-filled dampers are used for audio equipment,
It is built into information equipment, especially a car CD player, and has excellent vibration damping properties that absorb vibration transmitted from the outside to the pickup mechanism inside the player due to the viscous flow resistance of the viscous fluid filled in the damper. The viscous fluid-filled damper may be used in combination with a metal tension or compression spring depending on the weight of the pickup mechanism, which is a supported member for vibration isolation, and the balance thereof.
【０００３】自動車の振動には振動数あるいは加速度の
小さいものから大きいものまで様々なものがあり、衝撃
作用も働くことがある。このような様々な振動に対し
て、被支持体の重量やバランスに応じて粘性流体の粘度
を調整したり、封入しているゴム状弾性体の硬度を調整
することで最適な防振効果を持たせている。[0003] There are various types of vibrations of automobiles, from those having a small frequency or acceleration to those having a large frequency, and sometimes have an impact effect. For such various vibrations, adjust the viscosity of the viscous fluid according to the weight and balance of the supported object, or adjust the hardness of the rubber-like elastic material enclosed to achieve the optimal vibration-proof effect. I have it.
【０００４】[0004]
【発明が解決しようとする課題】高粘度の粘性流体を封
入したダンパーは見掛け上の動的バネ定数が高く、高い
共振周波数と高減衰力により振幅を小さくできる。しか
し、高い周波数（１００Ｈｚ以上）の振動に対しては共
振周波数が高いことと、減衰力が高いことにより振動伝
達率を下げる能力が低く、つまり防振効果が低下する傾
向にある。A damper filled with a high-viscosity viscous fluid has a high apparent dynamic spring constant, and its amplitude can be reduced by a high resonance frequency and a high damping force. However, for vibrations of high frequency (100 Hz or more), the ability to reduce the vibration transmissibility is low due to the high resonance frequency and the high damping force, that is, the vibration damping effect tends to decrease.
【０００５】逆に低粘度の粘性流体を封入したダンパー
は、被支持体の共振周波数付近において、特に低い周波
数域（１０〜２０Ｈｚ付近）で被支持体の共振倍率が高
くなるため、メカニズムの振幅が大きくなり、攪拌部と
容器およびフタとの衝突による衝撃波、またはダンパー
外の装置間の衝突による衝撃波によりこの周波数域では
ディスクの音飛び、誤動作等が発生し易くなる。On the other hand, a damper filled with a low-viscosity viscous fluid has a high resonance magnification near the resonance frequency of the supported body, especially in a low frequency range (about 10 to 20 Hz), and thus the amplitude of the mechanism is small. In this frequency range, sound skipping and malfunction of the disk are likely to occur due to a shock wave caused by a collision between the stirring section and the container or the lid, or a shock wave caused by a collision between devices outside the damper.
【０００６】[0006]
【課題を解決するための手段】そこで本発明は、上記課
題を解決するため、バネ定数可変型粘性封入式ダンパー
において粘性流体を封入するダンパーのベローズ部を除
く容器およびフタの内部または外部、さらに攪拌部の内
部または外部にに磁石を配し、各磁石はダンパーの内側
方向に同極が向くように位置させた。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has been made to solve the above-mentioned problem. Magnets were arranged inside or outside the stirring unit, and the magnets were positioned so that the same polarity was directed toward the inside of the damper.
【０００７】磁石による磁力は距離の二乗に反比例する
ので、攪拌部の振幅の大きいとき、例えば被支持体の共
振周波数付近では、攪拌部は容器側に接近し、攪拌部に
配した磁石と容器側に配した磁石あるいはフタ側に配し
た磁石７が接近し、各磁石は同極同士が向合って配され
ているため、磁石の持つ反発力により共振倍率を抑え
る。なお、攪拌部の振幅の小さいときには、磁石同士が
接近せず、粘性流体２の粘性流動抵抗による高い防振特
性効果を得ることできる。Since the magnetic force of the magnet is inversely proportional to the square of the distance, when the amplitude of the stirrer is large, for example, near the resonance frequency of the supported member, the stirrer approaches the container side, and the magnet disposed in the stirrer and the container The magnet arranged on the side or the magnet 7 arranged on the lid approaches and the magnets are arranged with the same poles facing each other, so that the resonance magnification is suppressed by the repulsive force of the magnet. When the amplitude of the stirring section is small, the magnets do not come close to each other, and a high vibration-proof characteristic effect due to the viscous flow resistance of the viscous fluid 2 can be obtained.
【０００８】すなわち、高い周波数域では加速度が大き
くても振幅が小さいため、磁力による反発力は小さく、
攪拌部と粘性流体による動的バネ定数が小さいため、振
動伝達率を小さくできる事により高い防振特性効果を生
じる。低い周波数域では振幅が大きいことによりその振
幅に合わせ攪拌部の移動は大きくなるため、攪拌部と容
器およびフタに設置された磁石の反発力も増加し動的バ
ネ定数は大きくなる。That is, in a high frequency range, the amplitude is small even if the acceleration is large.
Since the dynamic spring constant of the stirrer and the viscous fluid is small, the vibration transmissibility can be reduced, so that a high vibration damping characteristic effect is obtained. In the low frequency range, the amplitude is large, and the movement of the stirring unit is increased in accordance with the amplitude. Therefore, the repulsive force of the stirring unit, the magnet provided in the container and the lid is increased, and the dynamic spring constant is increased.
【０００９】磁石の反発力はその距離の２乗に反比例す
るため、他の弾性体以上のバネ定数の増加が得られる。
そのため振幅は小さくなり攪拌部と容器およびフタとの
衝突、その他の装置の衝突による衝撃波をおさえること
ができ大きい防振効果を生じる。低周波数域から高周波
数域まで広い周波数域で大きい減衰効果を持ち、かつ被
支持体であるメカニズムの共振周波数での共振倍率を抑
える粘性流体封入式ダンパーが提供できるものである。Since the repulsive force of the magnet is inversely proportional to the square of the distance, the spring constant can be increased more than other elastic bodies.
For this reason, the amplitude is reduced, and a shock wave caused by a collision between the agitator and the container or the lid or a collision with another device can be suppressed, and a large vibration damping effect is produced. An object of the present invention is to provide a viscous fluid-filled damper that has a large damping effect in a wide frequency range from a low frequency range to a high frequency range, and suppresses a resonance magnification at a resonance frequency of a mechanism to be supported.
【００１０】さらに本発明の磁力を発生させる磁石の材
質としては、比較的強い磁界を発生させる炭素鋼、アル
ニコ、フェロックス・デュワー、フェライト、コバル
ト、ニッケル、鉄、パーマロイ等の磁性体および電磁石
等が挙げられる。これらは、小型でもばね定数に影響を
及ぼすため、本発明に望ましい。Further, the material of the magnet for generating a magnetic force according to the present invention may be a magnetic material such as carbon steel, alnico, ferrox dewar, ferrite, cobalt, nickel, iron, permalloy, etc., which generates a relatively strong magnetic field, and an electromagnet. Is mentioned. These are desirable for the present invention because they affect the spring constant even in a small size.
【００１１】[0011]
【発明の実施の形態】以下に図を参照しながら本発明で
あるバネ定数可変型粘性流体封入式ダンパーの構成につ
いて説明する。図１は本発明であるバネ定数可変型粘性
流体封入式ダンパーの一例に従った断面図である。容器
１は、粘性流体２を後述のフタ５とで密閉でき、かつ可
動し得るようなゴム状弾性体の単体構造、または、ゴム
状弾性体と硬質樹脂、ゴム状弾性体と金属との複合構造
とする。フタ５はゴム状弾性体の単体構造、またはゴム
状弾性体と硬質樹脂、ゴム状弾性体と金属、ゴム状弾性
体と磁性体との複合構造とする。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of a variable spring constant type viscous fluid-filled damper according to the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view according to an example of a viscous fluid-filled damper having a variable spring constant according to the present invention. The container 1 has a single structure of a rubber-like elastic body that can seal and move the viscous fluid 2 with a lid 5 described later, or a composite of a rubber-like elastic body and a hard resin, or a rubber-like elastic body and a metal. Structure. The lid 5 has a single structure of a rubber-like elastic body, or a composite structure of a rubber-like elastic body and a hard resin, a rubber-like elastic body and a metal, or a rubber-like elastic body and a magnetic body.
【００１２】シャフト４は、被支持体から突起した剛体
シャフトであり容器１の筒状抵抗部位に挿入され攪拌部
３を成し、外部振動が発生した時に、攪拌部３の振幅す
なわち攪拌動作により粘性流体２の粘性抵抗により被支
持体へ防振効果を得ている。また、攪拌部３の内部また
は外部には磁石８が設けられており、その磁石がベロー
ズ部１５を除く容器１の外部または内部に設けられた磁
石６およびフタ５の内部または外部に設けられた磁石７
と反発することによっても防振効果を得る。The shaft 4 is a rigid shaft protruding from the supported member, and is inserted into the cylindrical resistance portion of the container 1 to form the stirring section 3. When an external vibration is generated, the amplitude of the stirring section 3, that is, the stirring operation is performed. Due to the viscous resistance of the viscous fluid 2, an anti-vibration effect is obtained on the supported member. A magnet 8 is provided inside or outside the stirring section 3, and the magnet is provided inside or outside the magnet 6 and the lid 5 provided outside or inside the container 1 except for the bellows section 15. Magnet 7
Also, by repelling, an anti-vibration effect is obtained.
【００１３】なお図１において、磁石６、磁石７、磁石
８の極性においてはダンパーの内方向側である濃色側を
同極とする。すなわち、白色側がＮ極の時は濃色側がＳ
極である。磁石による磁力は距離の二乗に反比例するの
で、攪拌部３の振幅の大きいとき、例えば被支持体の共
振周波数付近では、攪拌部３に設けられた磁石８が容器
側に設けられた磁石６とフタ側に設けられた磁石７に接
近し、同極性の磁石の持つ反発力により共振倍率を抑え
る効果をもつ。また、攪拌部３の振幅の小さいときに
は、攪拌部３の磁石８が磁石６および磁石７に粘性流体
２の粘性による影響より磁力による影響が大きくなるほ
ど接近することはなく、粘性流体２の粘性流動抵抗によ
り高い防振特性効果を発揮する。In FIG. 1, the polarity of the magnet 6, magnet 7, and magnet 8 is the same on the dark side, which is the inward side of the damper. That is, when the white side has the N pole, the dark side has the S pole.
It is a pole. Since the magnetic force of the magnet is inversely proportional to the square of the distance, when the amplitude of the stirring unit 3 is large, for example, near the resonance frequency of the supported member, the magnet 8 provided in the stirring unit 3 is connected to the magnet 6 provided on the container side. It has an effect of approaching the magnet 7 provided on the lid side and suppressing the resonance magnification by the repulsive force of the magnet of the same polarity. When the amplitude of the stirring section 3 is small, the magnet 8 of the stirring section 3 does not approach the magnet 6 and the magnet 7 as the influence of the magnetic force becomes larger than the influence of the viscosity of the viscous fluid 2. High anti-vibration characteristics effect due to resistance.
【００１４】[0014]
【実施例】硬度２５°(JIS K 6301 A型硬度測定規格準
拠)の熱可塑性スチレン系エラストマーを用いた中空状
弾性体からなる容器１内に粘性流体２を充填した。粘性
流体２には、回転粘度2.5万csのシリコーングリスを用
いた。磁石６、磁石８には円筒型磁石を、磁石７には円
盤型磁石を用いた。それぞれの磁石はフェライト製であ
り、最大磁束密度は約２０００ガウスである。EXAMPLE A viscous fluid 2 was filled in a container 1 made of a hollow elastic body using a thermoplastic styrene-based elastomer having a hardness of 25 ° (based on JIS K 6301 Type A hardness measurement standard). As the viscous fluid 2, silicone grease having a rotational viscosity of 25,000 cs was used. A cylindrical magnet was used for the magnets 6 and 8, and a disk-shaped magnet was used for the magnet 7. Each magnet is made of ferrite and has a maximum magnetic flux density of about 2000 gauss.
【００１５】比較例として第２図に従来のダンパーを示
す。 容器１は材質として硬度２５°の熱可塑性スチレ
ン系エラストマーを用い粘性流体２には回転粘度2.5万c
sのシリコーングリスのみを封入充填させたものを作製
した。FIG. 2 shows a conventional damper as a comparative example. The container 1 is made of a thermoplastic styrene elastomer having a hardness of 25 °, and the viscous fluid 2 has a rotational viscosity of 25,000 c.
A product in which only silicone grease of s was sealed and filled was produced.
【００１６】以上に述べた実施例および比較例のバネ定
数可変型粘性流体封入式ダンパーの防振効果を次の試験
方法で評価した。図３に示すように、重量は３８０ｇの
被支持体９から４本の剛体の支持軸（シャフト１０）が
突起していて、このシャフトを本発明実施例および比較
例の４個のバネ定数可変型粘性流体封入ダンパー１１に
挿入し被支持体の支持を行った。なお、引張りコイルス
プリング１２（４本）によっても被支持体を支持してい
る。このバネ定数可変型粘性流体封入ダンパー１１およ
び引張りコイルスプリング１２は、加振テーブル１４に
固定された金属のフレーム１３に取り付けられている。The vibration damping effect of the viscous fluid-filled dampers with variable spring constants of the above-described examples and comparative examples was evaluated by the following test method. As shown in FIG. 3, four rigid support shafts (shafts 10) protrude from a supported body 9 weighing 380 g, and these shafts are used to change four spring constants of the embodiment of the present invention and the comparative example. It was inserted into the viscous fluid-filled damper 11 to support the supported member. The supported member is also supported by the tension coil springs 12 (four). The variable spring constant type viscous fluid filled damper 11 and the extension coil spring 12 are attached to a metal frame 13 fixed to a vibration table 14.
【００１７】加振テーブル１４を加振して、その振動の
被支持体９への伝達率を測定することによって防振効果
を評価する。図３において上下方向に一定加速度で周波
数８〜２００Hzの範囲で振動させる。共振倍率は共振周
波数において加振テーブルからの振動入力加速度ａ１に
対し被支持体からの振動出力加速度ａ２をａ２／ａ１の
関係で表し、また１００Hzの振動伝達率も同様の関係を
表している。The vibration damping effect is evaluated by vibrating the vibration table 14 and measuring the transmission rate of the vibration to the supported member 9. In FIG. 3, vibration is performed in the vertical direction at a constant acceleration in a frequency range of 8 to 200 Hz. Resonance magnification represents relative vibration input acceleration a 1 from the excitation table at the resonance frequency of the vibration output acceleration a 2 from the supported body in relation to a 2 / a 1, also the 100Hz vibration transmissibility same relationship Represents.
【００１８】実施例および比較例のダンパーを振動伝達
測定した結果を表１に示す。Table 1 shows the results of vibration transmission measurements of the dampers of the example and the comparative example.
【表１】 比較例の粘性流体であるシリコーングリスのみを充填し
たものに対して本発明である実施例をみると振幅の大き
い共振点付近において図１の磁石８と磁石６、７とが反
発して振幅が減少することによる共振倍率の低下が確認
された。防振域である高周波数域（１００Ｈｚ付近）に
於いて、実施例は比較例と比較して同等の振動伝達率を
保っており、優れた防振減衰効果が認められる。一般的
に共振周波数を下げると１００Hzの振動伝達率は上がっ
てしまうが、本発明の実施例ではその問題を解決するこ
とが出来た。[Table 1] According to the embodiment of the present invention with respect to the comparative example in which only silicone grease which is a viscous fluid is filled, the magnet 8 and the magnets 6 and 7 in FIG. A decrease in the resonance magnification due to the decrease was confirmed. In the high frequency range (around 100 Hz), which is the vibration proof region, the example maintains the same vibration transmissibility as the comparative example, and an excellent vibration proof damping effect is recognized. Generally, when the resonance frequency is lowered, the vibration transmissibility of 100 Hz increases. However, the embodiment of the present invention has solved the problem.
【００１９】[0019]
【発明の効果】以上説明したように、本発明はダンパー
の内部または外部の少なくとも二ヶ所に磁石を有し、同
極の磁極同士が反発することを利用して、被支持体の振
幅の大きい周波数付近において防振効果を向上させる。
実際の車載ＣＤメカニズムに使用される場合には、共振
点付近での音飛び、誤動作の発生を防止する効果が期待
され、また、振幅の小さい高周波数では内部の粘性流体
の流動抵抗により減衰効果を発揮することの可能なバネ
定数可変型粘性流体封入式ダンパーを提供することが出
来る。As described above, the present invention has magnets in at least two locations inside or outside the damper, and utilizes the fact that magnetic poles of the same polarity repel each other, thereby increasing the amplitude of the supported member. Improves the anti-vibration effect near the frequency.
When used in an actual in-vehicle CD mechanism, it is expected to have the effect of preventing the occurrence of sound skips and malfunctions near the resonance point, and the damping effect due to the flow resistance of the internal viscous fluid at high frequencies with small amplitudes. A variable spring constant type viscous fluid-filled damper capable of exhibiting the above-mentioned characteristics can be provided.
【図１】 本発明の実施例の断面図FIG. 1 is a cross-sectional view of an embodiment of the present invention.
【図２】 比較例の断面図FIG. 2 is a sectional view of a comparative example.
【図３】 試験装置を示す図FIG. 3 shows a test apparatus.
１ 容器 ２ 粘性流体 ３ 攪拌部 ４ シャフト ５ フタ ６,７,８ 磁石 ９ 被支持体 １０ シャフト １１ ダンパー １２ コイルスプリング １３ フレーム １４ 加振テーブル １５ ベローズ部 DESCRIPTION OF SYMBOLS 1 Container 2 Viscous fluid 3 Stirrer 4 Shaft 5 Lid 6, 7, 8 Magnet 9 Supported body 10 Shaft 11 Damper 12 Coil spring 13 Frame 14 Vibration table 15 Bellows part
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１１年４月２日（１９９９．４．２）[Submission date] April 2, 1999 (1999.4.2)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００６[Correction target item name] 0006
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００６】[0006]
【課題を解決するための手段】そこで本発明は、上記課
題を解決するため、バネ定数可変型粘性流体封入式ダン
パーにおいて粘性流体を封入するダンパーのベローズ部
を除く容器およびフタの内部または外部、さらに攪拌部
の内部または外部に磁石を配し、各磁石はダンパーの内
側方向に同極が向くように位置させた。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a viscous fluid-filled damper having a variable spring constant, which is provided inside or outside a container and a lid except for a bellows portion of the damper for filling the viscous fluid. Further, magnets were arranged inside or outside the stirring section, and each magnet was positioned so that the same pole was directed inward of the damper.
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００７[Correction target item name] 0007
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００７】磁石による磁力は距離の二乗に反比例する
ので、攪拌部の振幅の大きいとき、例えば被支持体の共
振周波数付近では、攪拌部は容器側に接近し、攪拌部に
配した磁石と容器側に配した磁石あるいはフタ側に配し
た磁石が接近し、各磁石は同極同士が向合って配されて
いるため、磁石の持つ反発力により共振倍率を抑える。
なお、攪拌部の振幅の小さいときには、磁石同士が接近
せず、粘性流体２の粘性流動抵抗による高い防振特性効
果を得ることできる。Since the magnetic force of the magnet is inversely proportional to the square of the distance, when the amplitude of the stirrer is large, for example, near the resonance frequency of the supported member, the stirrer approaches the container side, and the magnet disposed in the stirrer and the container The magnet arranged on the side or the magnet arranged on the lid approaches, and the magnets are arranged with the same poles facing each other, so that the resonance magnification is suppressed by the repulsive force of the magnet.
When the amplitude of the stirring section is small, the magnets do not come close to each other, and a high vibration-proof characteristic effect due to the viscous flow resistance of the viscous fluid 2 can be obtained.
【手続補正３】[Procedure amendment 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１６[Correction target item name] 0016
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１６】以上に述べた実施例および比較例のバネ定
数可変型粘性流体封入式ダンパーの防振効果を次の試験
方法で評価した。図３に示すように、重量は３８０ｇの
被支持体９から４本の剛体の支持軸（シャフト１０）が
突起していて、このシャフトを本発明実施例および比較
例の４個のバネ定数可変型粘性流体封入式ダンパー１１
に挿入し被支持体の支持を行った。なお、引張りコイル
スプリング１２（４本）によっても被支持体を支持して
いる。このバネ定数可変型粘性流体封入式ダンパー１１
および引張りコイルスプリング１２は、加振テーブル１
４に固定された金属のフレーム１３に取り付けられてい
る。The vibration damping effect of the viscous fluid-filled dampers with variable spring constants of the above-described examples and comparative examples was evaluated by the following test method. As shown in FIG. 3, four rigid support shafts (shafts 10) protrude from a supported body 9 weighing 380 g, and these shafts are used to change four spring constants of the embodiment of the present invention and the comparative example. Type viscous fluid filled damper 11
To support the supported member. The supported member is also supported by the tension coil springs 12 (four). This spring constant variable viscous fluid filled damper 11
And the extension coil spring 12
4 is attached to a metal frame 13 fixed to the frame 4.
【手続補正５】[Procedure amendment 5]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図１[Correction target item name] Fig. 1
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図１】 FIG.
Claims (2)
ゴム状弾性体容器とフタにより封入され、外部からの振
動に対しそのゴム状弾性体の攪拌部が粘性流体中を移動
することで粘性抵抗を生じ減衰力をもつダンパーにおい
て、ベローズ部を除くダンパーの部位の内部または外部
に、ダンパーの内方向側が同極となるように磁石を配し
てなるバネ定数可変型粘性流体封入式ダンパー。1. A viscous fluid is enclosed by a rubber-like elastic container having a stirring portion and a bellows portion and a lid, and the stirring portion of the rubber-like elastic material moves in the viscous fluid in response to vibration from the outside. A damper having resistance and damping force, wherein a viscous fluid-filled damper having a variable spring constant is provided with magnets inside or outside of the damper except for the bellows portion so that the inside of the damper has the same polarity.
ス・デュワー、フェライト、コバルト、ニッケル、鉄、
パーマロイのうち少なくとも１つからなる磁性体または
電磁石からなることを特徴とする請求項１に記載のバネ
定数可変型粘性流体封入式ダンパー。2. The magnet according to claim 1, wherein said magnet is carbon steel, alnico, ferrox dewar, ferrite, cobalt, nickel, iron,
2. The viscous fluid-filled damper according to claim 1, wherein the damper is made of a magnetic material or an electromagnet made of at least one of Permalloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2595299A JP2000220681A (en) | 1999-02-03 | 1999-02-03 | Variable spring constant type viscous fluid sealed damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2595299A JP2000220681A (en) | 1999-02-03 | 1999-02-03 | Variable spring constant type viscous fluid sealed damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000220681A true JP2000220681A (en) | 2000-08-08 |
Family
ID=12180106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2595299A Pending JP2000220681A (en) | 1999-02-03 | 1999-02-03 | Variable spring constant type viscous fluid sealed damper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000220681A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006336786A (en) * | 2005-06-03 | 2006-12-14 | Sekisui Chem Co Ltd | Microcapsules, compositions and vibration control / soundproof members |
| EP1900964A1 (en) | 2006-09-14 | 2008-03-19 | Polymatech Co., Ltd. | Viscous fluid-sealed damper |
| US7934709B2 (en) | 2007-08-02 | 2011-05-03 | Polymatech Co., Ltd. | Viscous fluid-sealed damper |
| CN105546026A (en) * | 2015-12-24 | 2016-05-04 | 吉林大学 | Low-frequency three-dimensional vibration-isolating mining dump vehicle seat based on magnetic negative-stiffness spring design |
-
1999
- 1999-02-03 JP JP2595299A patent/JP2000220681A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006336786A (en) * | 2005-06-03 | 2006-12-14 | Sekisui Chem Co Ltd | Microcapsules, compositions and vibration control / soundproof members |
| EP1900964A1 (en) | 2006-09-14 | 2008-03-19 | Polymatech Co., Ltd. | Viscous fluid-sealed damper |
| US7934709B2 (en) | 2007-08-02 | 2011-05-03 | Polymatech Co., Ltd. | Viscous fluid-sealed damper |
| CN105546026A (en) * | 2015-12-24 | 2016-05-04 | 吉林大学 | Low-frequency three-dimensional vibration-isolating mining dump vehicle seat based on magnetic negative-stiffness spring design |
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