JPH026517Y2 - - Google Patents
Info
- Publication number
- JPH026517Y2 JPH026517Y2 JP19314883U JP19314883U JPH026517Y2 JP H026517 Y2 JPH026517 Y2 JP H026517Y2 JP 19314883 U JP19314883 U JP 19314883U JP 19314883 U JP19314883 U JP 19314883U JP H026517 Y2 JPH026517 Y2 JP H026517Y2
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- holder
- spherical
- annular groove
- 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
- 230000005291 magnetic effect Effects 0.000 claims description 9
- 239000011553 magnetic fluid Substances 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 230000001050 lubricating effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 229910000897 Babbitt (metal) Inorganic materials 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
- 230000005294 ferromagnetic effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000843 powder 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
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910000828 alnico 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
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 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
- 239000005060 rubber Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 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 pinches a magnetic tape between 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 such as rubber fixed to the outer circumferential surface, which is rotatably supported on the roller shaft via a ball bearing. . However, in this case, the ball bearings mentioned above must be extremely precise and compact, which not only increases the manufacturing cost of the pinch rollers, but also generally reduces the smoothness of rotation 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. Because of this, 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、このためローラ軸とゴムタイヤを有する金属
スリーブ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 surface 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 to the roller shaft, and a self-aligning effect is achieved by sliding contact between both spherical surfaces. A pinch roller has been proposed to achieve this. However, such conventional technology requires the installation of a coil spring or the like that elastically restrains the bearing metal from above in order to hold it in a predetermined position. Not only does this cause some problems in the stable tape transfer function, but also the direct sliding contact between the spherical parts of the bearing metal and the sleeve causes rotational support and automatic displacement. Because the alignment is performed, the sliding contact surface is subject to severe wear, causing harmful rattling relatively early, and the friction noise caused by the sliding contact causes wow, wow, etc.
There were problems such as flutter, which adversely affected audio characteristics.
(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。(Structure and Embodiments) The structure of this invention will be described below based on illustrated embodiments.
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 an intermediate portion in the longitudinal direction of the roller shaft, which is supported on an annular flange 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 part 2a with the center O 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
の範囲内で傾動許動(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 assumed that tilting permission (self-aligning behavior) is allowed within the range of .
ところで、上記軸受2と軸受ホルダー5とは、
いずれも永久磁石体で構成され、第2図に示すよ
うに、それらの近接対向部、即ち、球面部2aと
環状凹溝6内面との近接した上下両部に、互いに
異極どおしが相対向して2つの閉磁気回路Cを構
成するように、各1対のN極とS極とが着磁され
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2aと環状凹溝6内面との近接対
向面間に上記の磁力によつて吸着保持せしめるも
のとして潤滑用の磁性流体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:
Both of them are composed of permanent magnets, and as shown in FIG. 2, their mutually different polarities are located at the close opposing parts, that is, the upper and lower parts where the spherical part 2a and the inner surface of the annular groove 6 are close to each other. Each pair of N and S poles is magnetized so as to constitute two closed magnetic circuits C facing each other. And both of these 2,
A magnetic fluid 7 for lubrication is interposed between the closely opposing surfaces of the spherical portion 2a of 5 and the inner surface of the annular groove 6 to be attracted and held by the above-mentioned magnetic force.
上記軸受2及び軸受ホルダー5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、特に好適には
樹脂磁石を用いるのが、成形性、製造の容易性、
量産性等の点から最も有利である。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、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、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などの熱可塑性のも
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。 As the magnet body used for the bearing 2 and the bearing holder 5, alnico magnets, ferrite magnets, resin magnets, etc. can be exemplified, but resin magnets are particularly preferably used because of moldability, ease of manufacture,
This is the most advantageous in terms of mass production. This resin magnet is made by kneading ferromagnetic powder and thermoplastic or thermosetting resin, molding it, and magnetizing it at the required locations.
(Fe 2 O 3 ) ferrite represented by n [where M is one or more of Ba, Pb, Sr, Ca, and Co, m and n are positive integers], or the general formula RCo 5 or R 2 Co 17 [wherein R is one or more of Sm, Y, Ld and Co], and the resins include polyamide resin, polyethylene resin, Thermoplastic materials such as polyethylene terephthalate resin, or thermosetting materials 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.
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.
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ダー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。 The bearing holder 5 is divided into upper and lower parts, with the horizontal plane where the center O of the spherical part 2a of the bearing 2 is located as a dividing plane.
Divided upper holder 5a and lower holder 5b
It is composed of a combination of 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、
いずれも磁石体で構成され、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、磁性流体を軸受2と軸受ホルダー5
との間で異極を相対向させて構成された閉磁気回
路Cにより、磁力吸着して保持するものとなされ
ていることにより、その保持作用が確実で、流体
洩れを生じることがなく、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あることも相俟つて、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
Both of them are composed of magnets, and a magnetic fluid 7 that is attracted and held by the magnetic force of the magnet is interposed between their close opposing surfaces, so that the rotation and alignment effects are achieved by the lubricating action of the magnetic fluid 7. Not only can this be done smoothly, but also their wear can be significantly reduced. And, the magnetic fluid is applied to the bearing 2 and the bearing holder 5.
The closed magnetic circuit C, which has different polarities facing each other, is used to attract and hold the magnetically attracted parts, so that the holding action is reliable, and there is no possibility of fluid leakage. Coupled with the fact that it is possible to keep a small amount of liquid at the effective working area at all times, it is possible to maintain good rotational performance and self-aligning performance over a long period of time, greatly improving durability, and preventing rattling etc. There is also less risk of adverse effects on audio characteristics such as wow and flutter. Furthermore, the number of component parts is small, manufacturing is simple, and the cost of parts is lower than when using expensive ball bearings, so it can be manufactured and provided at low 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、
C……閉磁気回路。
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,
C...Closed magnetic circuit.
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とがいず
れも、互いに異極を相対向して閉磁気回路を構
成するように着磁された磁石体で形成され、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及び軸受ホルダー5が、いずれも樹脂
磁石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; Both the bearing 2 and the bearing holder 5 are formed of magnets that are magnetized so that different poles face each other to form a closed magnetic circuit, and the spherical portion 2a of both of them faces each other. A pinch roller in which a lubricating magnetic fluid 7, which is attracted and held by the magnetic force of the magnet body, is interposed between the inner surface of the annular groove 6 and the inner surface of the annular groove 6. (2) The pinch roller according to claim 1, in which the bearing 2 and the bearing holder 5 are both made of resin magnets. (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 exists as a dividing plane. Pinch roller mentioned.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19314883U JPS60102743U (en) | 1983-12-14 | 1983-12-14 | pinch roller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19314883U JPS60102743U (en) | 1983-12-14 | 1983-12-14 | pinch roller |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60102743U JPS60102743U (en) | 1985-07-13 |
JPH026517Y2 true JPH026517Y2 (en) | 1990-02-16 |
Family
ID=30415486
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19314883U Granted JPS60102743U (en) | 1983-12-14 | 1983-12-14 | pinch roller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60102743U (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7378325B2 (en) * | 2020-03-17 | 2023-11-13 | 株式会社フジタ | One-touch lock bolt |
-
1983
- 1983-12-14 JP JP19314883U patent/JPS60102743U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS60102743U (en) | 1985-07-13 |
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