JPH026516Y2 - - Google Patents
Info
- Publication number
- JPH026516Y2 JPH026516Y2 JP19314783U JP19314783U JPH026516Y2 JP H026516 Y2 JPH026516 Y2 JP H026516Y2 JP 19314783 U JP19314783 U JP 19314783U JP 19314783 U JP19314783 U JP 19314783U JP H026516 Y2 JPH026516 Y2 JP H026516Y2
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- holder
- spherical
- magnetic
- sleeve
- 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
- 229920005989 resin Polymers 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 11
- 239000000696 magnetic material Substances 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 230000005291 magnetic effect Effects 0.000 claims description 7
- 239000011553 magnetic fluid Substances 0.000 claims description 7
- 230000001050 lubricating effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 229910000897 Babbitt (metal) Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 230000005294 ferromagnetic effect Effects 0.000 description 3
- 239000006247 magnetic powder Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Description
【考案の詳細な説明】
(産業上の利用分野)
この考案は、テープレコーダ、VTR等におい
て、強制回転駆動されるキヤプスタンとの間に磁
気テープを挾着してその移送を司るピンチローラ
に関する。[Detailed Description of the Invention] (Industrial Field of Application) This invention relates to a pinch roller that clamps a magnetic tape between a capstan and a capstan that is driven to rotate forcibly in a tape recorder, VTR, etc., and controls the transfer of the magnetic tape.
(一般的技術課題)
ピンチローラは、可及的円滑な回転機能を保有
すべきことはもちろんであるが、テープの安定走
行を保証するためには自動調芯機能を保有すべき
ことが不可欠である。即ち、該調芯機能を有しな
いか、あるいはそれが乏しい場合には、設計製作
上不可避的なキヤプスタンとピンチローラとの軸
芯の平行度の誤差により、移送テープの偏寄現象
や片伸びを生じるおそれがあり、ひどいときには
テープがピンチローラから外れたり、またテープ
の上下変動や走行速度の変動を生じてワウ・フラ
ツタ量を増大させる原因になる。(General technical issues) Pinch rollers must have the ability to rotate as smoothly as possible, but it is also essential that they have an automatic centering function to ensure stable tape running. be. In other words, if the centering function is not provided or is insufficient, the transfer tape may be biased or elongated due to errors in the parallelism of the axes of the capstan and pinch roller, which are unavoidable due to design and manufacturing. In severe cases, the tape may come off the pinch roller, or the tape may fluctuate up and down or the running speed may fluctuate, increasing the amount of wow and flutter.
(従来技術)
従来のピンチローラの最も一般的な構造は、外
周面にゴム等の弾性タイヤを固着した円筒状スリ
ーブを、玉軸受を介してローラ軸に回転自在に支
承したものとなされていた。しかしこの場合、上
記玉軸受に極めて高精度かつ小型のものを要する
ことも相俟つてピンチローラの製作コストが高価
につくのみならず、概して減摩ボールの精度不均
一等により回転の円滑性に充分な満足を得ること
が困難であつた。加えて、上記玉軸受によるもの
は、該軸受における減摩ボールと内外輪との間の
本来は有害ながたつきの原因となるクリアランス
を利用して、所期の自動調芯作用を実現しようと
しているものであるため、もとより自動調芯量が
小さく、その調芯機能の円滑性にも乏しいもので
あつた。(Prior art) The most common structure of conventional pinch rollers is a cylindrical sleeve with an elastic tire made of rubber or other material fixed to its outer circumferential surface, which is rotatably supported on a roller shaft via a ball bearing. . However, in this case, not only does the production cost of the pinch roller become high due to the fact that the ball bearing described above must be extremely precise and compact, but also the smoothness of rotation is generally affected due to uneven precision of the anti-friction balls. It was difficult to obtain sufficient satisfaction. In addition, the above-mentioned ball bearings attempt to achieve the desired self-aligning effect by utilizing the clearance between the anti-friction balls and the inner and outer rings of the bearing, which would otherwise cause harmful rattling. As a result, the amount of automatic alignment was small, and the alignment function was not smooth.
このような問題点を解決するための1つの手段
として、最近、例えば特開昭58−155559号に示さ
れるように金属スリーブの内周面にローラ軸の軸
線上に中心を置く球面部を形成する一方、ローラ
軸に回転摺動自在にはめ合わせた焼結含油合金か
らなる軸受メタルの下部外周面に上記に対応する
球面部を形成して、両球面部の摺接により自動調
芯作用を実現せしめるものとしたピンチローラが
提案されている。ところが斯る従来技術は、軸受
メタルを所定位置に保持するためにこれを上方か
ら弾性的に抑止するコイルばね等の付設を必要と
し、このためにローラ軸とゴムタイヤを有する金
属スリーブ2との間で相対的な上下方向の変位を
起すおそれがあり、テープの安定移送機能にいさ
さか問題を含むのみならず、軸受メタルとスリー
ブとの前記球面部どおしの直接の摺接によつて回
転支承と自動調芯を行わせるものであるために、
その摺接面の摩耗が激しく、比較的早期に有害な
がたを発生する上に、摺接による摩擦音によりワ
ウ・フラツター等のオーデイオ特性に悪影響を及
ぼす等の問題があつた。 As one means to solve these problems, recently, a spherical part centered on the axis of the roller shaft has been formed on the inner peripheral surface of the metal sleeve, as shown in Japanese Patent Application Laid-Open No. 155559/1983. On the other hand, a spherical part corresponding to the above is formed on the lower outer peripheral surface of the bearing metal made of a sintered oil-impregnated alloy that is rotatably and slidably fitted onto the roller shaft, and a self-aligning effect is achieved by sliding contact between both spherical parts. A pinch roller has been proposed to achieve this. However, in this conventional technology, in order to hold the bearing metal in a predetermined position, it is necessary to install a coil spring or the like to elastically restrain the bearing metal from above. This may cause relative displacement in the vertical direction, which not only poses some problems with the stable tape transfer function, but also causes rotational support due to the direct sliding contact between the spherical parts of the bearing metal and the sleeve. Because it performs automatic alignment,
The sliding contact surfaces are subject to severe wear, causing harmful rattling relatively early, and the frictional noise caused by the sliding contact adversely affects audio characteristics such as wow and flutter.
(考案の目的)
この考案は、上記のような従来技術を有する
種々の問題点をすべて解決することを目的とす
る。即ち、回転支承及び自動調芯のいずれの機能
も極めてスムーズなものとなし得てワウ・フラツ
ター等のオーデイオ特性に悪影響を与えることが
なく、耐用寿命を増大しうると共に、自動調芯の
制御範囲を大きくとることができ、しかも部材の
加工及び組立を含む製作を容易になし得て製造コ
ストの低減化を達成しうるピンチローラの構造を
提供しようとするものである。(Purpose of the invention) The purpose of this invention is to solve all the various problems of the prior art as described above. In other words, both the rotary support and self-alignment functions can be made extremely smooth, without adversely affecting audio characteristics such as wow and flutter, increasing the service life, and improving the control range of self-alignment. It is an object of the present invention to provide a structure of a pinch roller that can have a large size, and can also be manufactured easily including processing and assembling the members, thereby achieving a reduction in manufacturing costs.
(構成と実施例)
以下、この考案の構成を図示実施例に基づいて
説明する。(Configuration and Examples) The configuration of this invention will be described below based on illustrated examples.
1はローラ軸、2はその長さ方向の中間部に嵌
装された短筒状の軸受で、ローラ軸1の外周面に
一体に凸成された環状鍔部1a上に支承されてい
る。かつこの軸受2は、その外周面がローラ軸1
の軸線l上に中心Oを置く球面部2aに形成され
ている。もつともこの球面部2aは、上記外周面
の少なくとも上下両部のみに形成されておれば良
く、それらの中間部を第2図に鎖線で示すように
軸線lと平行な垂直面2bに形成しても良い。 Reference numeral 1 denotes a roller shaft, and 2 a short cylindrical bearing fitted in the longitudinally intermediate portion of the roller shaft, which is supported on an annular collar portion 1a integrally formed on the outer circumferential surface of the roller shaft 1. In addition, this bearing 2 has an outer peripheral surface that is similar to the roller shaft 1.
It is formed in a spherical surface part 2a with the center O placed on the axis l of. Of course, this spherical surface portion 2a only needs to be formed on at least both the upper and lower portions of the outer circumferential surface, and the intermediate portion thereof may be formed on a vertical surface 2b parallel to the axis l, as shown by the chain line in FIG. Also good.
3は円筒状の金属製スリーブ、4はその外周面
に固着された合成ゴム等の円筒状弾性体、5は上
記スリーブ3内に密に嵌挿固定された円筒状の軸
受ホルダーであり、その内周面には横断面略台形
状の環状凹溝6が形成され、これに前記軸受2の
外周面部が緩く嵌合され、第2図に示すように前
記中心Oを不動点とするスリーブ3の所定角度θ
範囲内での傾動許動(自動調芯挙動)を許容する
ものとなされている。 3 is a cylindrical metal sleeve, 4 is a cylindrical elastic body made of synthetic rubber or the like fixed to the outer peripheral surface of the sleeve, and 5 is a cylindrical bearing holder that is tightly fitted and fixed in the sleeve 3; An annular groove 6 having a substantially trapezoidal cross section is formed on the inner circumferential surface, into which the outer circumferential surface of the bearing 2 is loosely fitted, forming a sleeve 3 with the center O as a fixed point, as shown in FIG. The predetermined angle θ
It is designed to allow tilting movement (self-aligning behavior) within this range.
ところで、上記軸受2と軸受ホルダー5とは、
そのいずれか一方が永久磁石体で構成され、他方
が磁性体で構成される。而して図示実施例では、
製造上の有利性から、軸受2が磁石体で構成さ
れ、その外周面上下両端部に図示のようにN極と
S極とが着磁されたものとなされると共に、軸受
ホルダー5が磁性体で形成されたものとなされて
いる。そして、これら両者2,5の前記球面部2
aと環状凹溝6内面との近接対向面間に前記磁石
体、即ち、軸受2の磁力によつて吸着保持される
潤滑用の磁性流体7が介在せられたものとなされ
ている。 By the way, the bearing 2 and bearing holder 5 are as follows:
One of them is made of a permanent magnet, and the other is made of a magnetic material. Thus, in the illustrated embodiment,
For manufacturing advantages, the bearing 2 is made of a magnetic material, and the upper and lower ends of its outer peripheral surface are magnetized with N and S poles as shown in the figure, and the bearing holder 5 is made of a magnetic material. It is said that it was formed in The spherical portions 2 of both of these 2 and 5
A lubricating magnetic fluid 7 which is attracted and held by the magnetic force of the magnet body, that is, the bearing 2, is interposed between the close opposing surfaces of the annular groove a and the inner surface of the annular groove 6.
ここに用いる磁石体としては、アルニコ磁石、
フエライト磁石、樹脂磁石等を例示することがで
きるが、なかでも特に樹脂磁石を用いるのが、成
形性、製造の容易性,量産性等の点から有利であ
る。この樹脂磁石は、強磁性粉末と熱可塑性また
は熱硬化性樹脂とを混練して成形して所要個所に
着磁したものであり、強磁性粉末としては、例え
ば一般式MOm(Fe2O3)n[但し、Mは、Ba、
Pb、Sr、CaおよびCoのうちの1種又は2種以上
で、m、nは正の整数]で表わされるフエライ
ト、あるいは一般式RCo5又はR2Co17[但し、R
は、Sm、Y、Ld及びCoのうちの1種または2種
以上]で表わされる希土類コバルトなどが用いら
れる。また、樹脂としては、ポリアミド樹脂、ポ
リエチレン樹脂、ポリエチレンテレフタレート樹
脂等の熱可塑性のもの、またはエポキシ樹脂、不
飽和ポリエステル樹脂、フエノールホルムアルデ
ヒド樹脂などの熱硬化性のものが用いられる。上
記強磁性粉末と合成樹脂との配合割合、その他成
形条件等は従来既知の常法によるものである。 The magnets used here include alnico magnets,
Ferrite magnets, resin magnets, etc. can be used as examples, and among them, resin magnets are particularly advantageous in terms of moldability, ease of manufacture, mass productivity, and the like. This resin magnet is made by kneading ferromagnetic powder and thermoplastic or thermosetting resin, molding it, and magnetizing it at the required locations.The ferromagnetic powder has the general formula MOm (Fe 2 O 3 ), for example. n [However, M is Ba,
Ferrite represented by one or more of Pb, Sr, Ca and Co, where m and n are positive integers], or with the general formula RCo 5 or R 2 Co 17 [however, R
is one or more of Sm, Y, Ld, and Co] and the like is used. Further, as the resin, thermoplastic resins such as polyamide resin, polyethylene resin, and polyethylene terephthalate resin, or thermosetting resins such as epoxy resin, unsaturated polyester resin, and phenol formaldehyde resin are used. The blending ratio of the ferromagnetic powder and synthetic resin, other molding conditions, etc. are in accordance with conventionally known methods.
一方、前記磁性体としては、鉄、ステンレス等
の合金を用いても良いが、前記同様に成形の容易
性等の理由から、樹脂磁性体を用いるのが最も好
適である。該樹脂磁性体は、保磁力の小さい磁性
紛末を前記同様に合成樹脂と混練して成形して得
られる透磁率がおよそ4000〜100位のものであり、
ここに磁性粉末には、Fe、Ni、Co、などの粉
末、または一般式MOm(Fe2O3)n[但し、Mは、
Mn、Zn、Cu、Ni、Mgなどのうちの1種または
2種以上で、m、nは正の整数]で表わされる軟
質磁性粉末等が用いられる。 On the other hand, as the magnetic material, an alloy such as iron or stainless steel may be used, but it is most preferable to use a resin magnetic material for reasons such as ease of molding as described above. The resin magnetic material has a magnetic permeability of approximately 4000 to 100, which is obtained by kneading and molding a magnetic powder with a small coercive force with a synthetic resin in the same manner as described above.
Here, the magnetic powder includes powders such as Fe, Ni, Co, etc., or the general formula MOm(Fe 2 O 3 ) n [where M is
A soft magnetic powder or the like represented by one or more of Mn, Zn, Cu, Ni, Mg, etc., where m and n are positive integers, etc., is used.
また、前記磁性流体7はオイル中に磁性粒子が
界面活性剤を介して分散されたもので、潤滑剤と
して機能するものである。 Further, the magnetic fluid 7 is composed of magnetic particles dispersed in oil via a surfactant, and functions as a lubricant.
また、前記軸受ホルダー5は、軸受2の球面部
2aの中心Oの存する水平面を分割面として、上
下に2分割された上部ホルー5aと下部ホルダー
5bとの組合わせによつて構成されている。この
ように軸受ホルダー5を2分割に構成することに
より、組立製作に際し、予め下部ホルダー5bを
スリーブ3内に嵌合固定したのち、軸受2を装着
したローラ軸1をスリーブ3内に上方から嵌め込
み、次いで上部ホルダー5aをスリーブ3内に嵌
め込むことにより、ピンチローラを簡易に組立て
可能なものとしている。なお、図中、8はワツシ
ヤ、9はこれを止持するEリングである。 Further, the bearing holder 5 is constituted by a combination of an upper hole 5a and a lower holder 5b which are divided into upper and lower halves, with the horizontal plane where the center O of the spherical portion 2a of the bearing 2 is located as the dividing plane. By configuring the bearing holder 5 into two parts in this way, during assembly production, the lower holder 5b is fitted and fixed in the sleeve 3 in advance, and then the roller shaft 1 with the bearing 2 mounted thereon is fitted into the sleeve 3 from above. Then, by fitting the upper holder 5a into the sleeve 3, the pinch roller can be easily assembled. In addition, in the figure, 8 is a washer, and 9 is an E-ring that holds it in place.
(作用効果)
この考案は、上述のような構成を有するもので
あるから、円筒状弾性体4、スリーブ3、及び軸
受ホルダー5が、ローラ軸1に嵌装した軸受2の
周りで一体的に回転する一方、軸受2の外周面の
球面部2aが軸受ホルダー5の対応環状凹溝6内
に相対的傾動挙動を許容する状態に嵌合されてい
ることにより、これが一種の球面自在継手を構成
して、ローラの外周面を軸線方向に所定角度範囲
内で自由に傾動変位せしめる自動調芯作用を比較
的大きな制御範囲に亘つて実現可能なものとす
る。しかも、上記軸受2と軸受ホルダー5とは、
それぞれ磁石体と磁性体と構成され、それらの近
接対向面間には上記磁石体の磁力によつて吸着保
持された磁性流体7が介在されているから、その
潤滑作用によつて上記回転及び調芯作用を円滑に
行わしめうるのはもとより、それらの摩耗を大幅
に軽減できる。かつ、磁性流体を磁力吸着してい
ることにより、それを少量にして常に有効作用部
位に確実に保持せしめることができることも相俟
つて、長期にわたり回転性能、自動調芯性能を良
好に保持し、耐久性を大幅に向上でき、がたつき
の発生等によるワウ・フラツター等のオーデイオ
特性に悪影響を及ぼすおそれも少ない。更には、
構成部材点数が少なく、製作が簡易であり、高価
な玉軸受を用いるような場合に較べて部品コスト
が廉価で、安価に製作提供できる。(Operation and Effect) Since this invention has the above-described configuration, the cylindrical elastic body 4, the sleeve 3, and the bearing holder 5 are integrated around the bearing 2 fitted to the roller shaft 1. While rotating, the spherical portion 2a of the outer peripheral surface of the bearing 2 is fitted into the corresponding annular groove 6 of the bearing holder 5 in a state that allows relative tilting behavior, thereby forming a kind of spherical universal joint. As a result, the self-aligning action of freely tilting and displacing the outer circumferential surface of the roller in the axial direction within a predetermined angular range can be realized over a relatively large control range. Moreover, the bearing 2 and the bearing holder 5 are
Each of them is composed of a magnet body and a magnetic body, and a magnetic fluid 7 that is attracted and held by the magnetic force of the magnet body is interposed between their close opposing surfaces. Not only can the core function smoothly, but also its wear can be significantly reduced. In addition, by magnetically adsorbing the magnetic fluid, a small amount of magnetic fluid can be kept reliably in the effective working area at all times, and together with this, it maintains good rotational performance and self-aligning performance over a long period of time. Durability can be greatly improved, and there is less risk of adverse effects on audio characteristics such as wow and flutter due to rattling. Furthermore,
The number of component parts is small, manufacturing is simple, and compared to the case where expensive ball bearings are used, the parts cost is lower and can be manufactured and provided at a lower cost.
図面はこの考案の実施例を示すものであり、第
1図は縦断面図、第2図は要部の拡大断面図であ
る。
1……ローラ軸、2……軸受、2a……球面、
3……スリーブ、4……円筒状弾性体、5……軸
受ホルダー、5a……上部ホルダー、5b……下
部ホルダー、6……環状凹溝、7……磁性流体。
The drawings show an embodiment of this invention; FIG. 1 is a longitudinal sectional view, and FIG. 2 is an enlarged sectional view of the main parts. 1...Roller shaft, 2...Bearing, 2a...Spherical surface,
3... Sleeve, 4... Cylindrical elastic body, 5... Bearing holder, 5a... Upper holder, 5b... Lower holder, 6... Annular groove, 7... Magnetic fluid.
Claims (1)
上下両部を前記ローラ軸1の軸線l上に中心O
を置く球面部2aに形成された短筒状軸受2が
嵌装される一方、外周面に円筒状弾性体4を固
着したスリーブ3内に筒状の軸受ホルダー5が
密嵌され、かつその内周面に形成された環状凹
溝6に前記軸受2の球面部2aを含む外周面部
が緩く嵌合されて前記スリーブ3の所定角度範
囲内での傾動挙動を許容しうるものとなされる
と共に、上記軸受2と軸受ホルダー5とのいず
れか一方が磁石体で他方が磁性体により形成さ
れ、かつこれら両者の前記球面部2aとこれに
対向する環状凹溝6内面との間に前記磁石体の
磁力によつて吸着保持される潤滑用磁性流体7
が介在せられてなるピンチローラ。 (2) 軸受2が樹脂磁石体よりなり、かつ軸受ホル
ダー5が樹脂磁性体よりなる実用新案登録請求
の範囲第1項記載のピンチローラ。 (3) 軸受ホルダー5は、球面部2aの中心Oの存
する水平面を分割面として上下に2分割された
上部ホルダー5aと下部ホルダー5bとよりな
る実用新案登録請求の範囲第1項または第2項
記載のピンチローラ。[Claims for Utility Model Registration] (1) On the outer peripheral surface of the roller shaft 1, at least both the upper and lower parts of the outer peripheral surface are centered O on the axis l of the roller shaft 1.
A short cylindrical bearing 2 formed on a spherical part 2a is fitted therein, while a cylindrical bearing holder 5 is tightly fitted into a sleeve 3 having a cylindrical elastic body 4 fixed to its outer circumferential surface. The outer circumferential surface portion of the bearing 2 including the spherical surface portion 2a is loosely fitted into the annular groove 6 formed on the circumferential surface, thereby allowing the sleeve 3 to tilt within a predetermined angular range; One of the bearing 2 and the bearing holder 5 is made of a magnetic material, and the other is made of a magnetic material, and the magnet material is formed between the spherical surface 2a of both of them and the inner surface of the annular groove 6 facing thereto. Lubricating magnetic fluid 7 that is attracted and held by magnetic force
A pinch roller is created by intervening. (2) The pinch roller according to claim 1, wherein the bearing 2 is made of a resin magnet and the bearing holder 5 is made of a resin magnetic material. (3) The bearing holder 5 consists of an upper holder 5a and a lower holder 5b which are divided into upper and lower halves with the horizontal plane where the center O of the spherical portion 2a is located as the dividing plane. Pinch roller as described.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19314783U JPS60102742U (en) | 1983-12-14 | 1983-12-14 | pinch roller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19314783U JPS60102742U (en) | 1983-12-14 | 1983-12-14 | pinch roller |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60102742U JPS60102742U (en) | 1985-07-13 |
JPH026516Y2 true JPH026516Y2 (en) | 1990-02-16 |
Family
ID=30415484
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19314783U Granted JPS60102742U (en) | 1983-12-14 | 1983-12-14 | pinch roller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60102742U (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012037060A (en) * | 2011-11-21 | 2012-02-23 | Oiles Corp | Rotary friction damper |
-
1983
- 1983-12-14 JP JP19314783U patent/JPS60102742U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS60102742U (en) | 1985-07-13 |
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