JP4187116B2 - Method and apparatus for stripping resin layer of resin-coated metal tube - Google Patents
Method and apparatus for stripping resin layer of resin-coated metal tube Download PDFInfo
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- JP4187116B2 JP4187116B2 JP25768997A JP25768997A JP4187116B2 JP 4187116 B2 JP4187116 B2 JP 4187116B2 JP 25768997 A JP25768997 A JP 25768997A JP 25768997 A JP25768997 A JP 25768997A JP 4187116 B2 JP4187116 B2 JP 4187116B2
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Description
【０００１】
【発明の属する技術分野】
本発明は、自動車などに用いられる油圧配管、燃料配管、エアー配管その他の配管として特に車体の下部に配設される管径２０ｍｍ以下の比較的細径からなる金属管において、走行中でのチッピング（飛石）やスプラッシュ（泥水）に対する耐食性をもたせるために膜状の樹脂層をその外周面に有し、かつ後工程で管端部にグルーブ、スプール、バルジ、フレアなどの端末加工を施すために、および／または中間部にクランプ部材用の把持部を形成するために樹脂被覆金属管の前記膜状の樹脂層を剥取る方法およびその装置に関するものである。
【０００２】
【従来の技術】
近年、自動車の下部に配設されるパワーステアリングなどの油圧配管、燃料のメイン配管、リターン配管、エバポ配管などの燃料配管あるいはその他の配管には耐チッピング性や耐スプラッシュ性をもたせるために樹脂被覆層を少なくとも薄膜状に、必要に応じ厚膜状に形成して用いる樹脂被覆金属管が数多く用いられている。
そしてこのような被覆金属管の具体例としては、金属管の外周面に施された電気、化学、溶融などのめっき法による亜鉛または亜鉛／ニッケルめっき層の上に、必要に応じてクロメート皮膜を形成して、さらに約２０μｍの厚さのエポキシ系プライマ−とポリフッ化ビニル（ＰＶＦ）をコーティングしたり、その上にさらに全長に亘って熱収縮性チューブを被着して重合被覆層を形成したものや、あるいは金属管の外周面に施された亜鉛または亜鉛／アルミニウムめっき層などの上に約２００〜３００μｍの厚さのＰＡ１１あるいＰＡ１２のようなポリアミド系樹脂（ＰＡ）やポリプロピレン（ＰＰ）などの樹脂を押出成形したものが知られている。
【０００３】
このような被覆金属管や重合被覆金属管にグルーブ、スプール、バルジ、フレアなどの端末加工を実施する場合やクランプ部材による把持部を形成する場合には、予め外層の樹脂層を剥取っておく必要がある。このような剥取作業は、従来ワイヤーバフによるバフ研磨や切削によって行っていた。
【０００４】
【発明が解決しようとする課題】
しかしながらワイヤーバフによる研磨はワイヤーの当たりが均等でなく、剥取が不均一になって樹脂層を完全に剥取ることができなかったり、また剥取りすぎるとワイヤーにより下地のめっき層や重合被覆層を設けたものでは内層として残存させるべき樹脂層までも傷つける場合があり、耐食性が劣化するなどの問題があった。
【０００５】
一方切削による剥取作業では対象となる金属管の精度、例えば真円度、真直度、外径、各層の肉厚などのばらつきによって均一に樹脂層を除去することができず、切削刃によって下地のめっき層や内層として残存させるべき樹脂層までも削り取ったり、傷つけたりすることがあった。またいずれの方法でも樹脂層の剥取作業の際に下地のめっき層や内層として残存させるべき樹脂層を傷つけず、かつ均一に剥取る必要があるために手間と時間がかかり、したがってその改善が強く望まれていた。
【０００６】
本発明の目的は、極めて簡単で下地に損傷を与えることなく、かつ確実に樹脂層を剥取ることができ、また重合被覆樹脂層を設けた場合でも外層が内層より軟質の樹脂からなる場合には外層のみを剥取ることができる樹脂被覆金属管の樹脂層の剥取方法およびその装置を提供することである。
【０００７】
【課題を解決するための手段】
上記目的を達成するため本発明の第１の実施態様は、エポキシ系樹脂とＰＶＦとの重合樹脂層、ポリプロピレン、ポリエチレンあるいはポリアミド系樹脂からなる樹脂層を被着してなる樹脂被覆金属管から該樹脂層を剥取るに際し、前記樹脂被覆金属管の外周面に配設されかつ管径方向でかつ管内方に押圧力を付与される複数個の回転ロール、または一対の平板状部材を備えた押圧手段により前記樹脂層を押圧するとともに、前記樹脂被覆金属管と前記樹脂層押圧手段とを相対的に管円周方向に移動せしめることを特徴とし、また前記樹脂層押圧手段により金属管の外周面に塑性加工を施し、さらに前記樹脂層押圧手段を金属管の軸芯方向へも移動させる樹脂被覆金属管の樹脂層の剥取方法を特徴とするものである。
【０００８】
また本発明の第２の実施態様は、金属管の外周面に下地処理を施した後、前記と同じエポキシ系樹脂とＰＶＦとの重合樹脂層、ポリプロピレン、ポリエチレンあるいはポリアミド系樹脂からなる樹脂層を被着してなる樹脂被覆金属管から該樹脂層を剥取る装置において、前記樹脂被覆金属管の外周面に配設されかつ管径方向でかつ管内方に押圧力を付与される複数個の回転ロール、または一対の平板状部材を備えた押圧手段と、前記金属管と樹脂層押圧手段とを相対的に周方向に移動せしめる手段を備えたことを特徴とし、また前記樹脂層押圧手段は金属管の軸芯方向へも移動可能である樹脂層の剥取装置を特徴とするものである。
【０００９】
【発明の実施の形態】
次に本発明を添付図面について詳述すれば、図１は本発明にかかる樹脂被覆金属管の樹脂層の剥取装置の一実施例を示す一部拡大断面図、図２は図１の装置の正面図、図３は他の実施例の横断半截図、図４はさらに別の実施例の図で、（ａ）は横断半截図、（ｂ）は正面図である。
【００１０】
本発明は、金属管の外周面にめっき層などの下地処理を施した後、樹脂層を被着してなる樹脂被覆金属管から該樹脂層を剥取るに際し、前記樹脂被覆金属管の外周面に配設されかつ管径方向でかつ管内方に押圧力を付与される複数個の回転ロール、または一対の平板状部材を備えた押圧手段により前記樹脂層を押圧するとともに、前記金属管と押圧手段とを相対的に周方向に移動せしめることを特徴とするもので、一実施例について図１および図２に基づき説明する。
【００１１】
１は電縫管、シームレス管、セミシームレス管、およびあらかじめ銅合金めっき層を施して一重または多重に巻いて造管されたろう付け管あるいは溶接管からなる比較的細径、例えば管径２０ｍｍ程度以下の鋼管からなる金属管１−１と、該金属管の外周面に形成された、電気、化学あるいは溶融などのめっき法による亜鉛、亜鉛／ニッケルまたは亜鉛／アルミニウムなどのめっき層１−２と、該めっき層の上面に必要に応じクロメート皮膜を施し、さらにその外周面に被覆されたエポキシ系樹脂とＰＶＦとの重合樹脂層、ポリプロピレン、ポリエチレンあるいはポリアミド系樹脂からなる膜状の単層の樹脂層１−３と、からなる樹脂被覆金属管であって、該樹脂被覆金属管１の樹脂層１−３を外部より管径方向で管内方へ押圧するよう複数個のロール２をリテーナ３−１を介してリング状のカラー３内に保持し、カラー３を回転させることによりロール２が樹脂被覆金属管１の樹脂層１−３を押圧しながら回動して前記樹脂層１−３を剥取るものである。
なお本発明はロール２を、リテーナ３−１を介してカラー３内に配設することは必ずしも必要でなく、ロール２の回転中心軸を樹脂被覆金属管１の外周面に沿って移動させることが肝要である。
【００１２】
この際ロール２の金属管１−１に面した外周面で描く仮想上の円の直径Ｄ０
（図２参照）を剥取るべき樹脂層１−３を除いた径、すなわち金属管１−１とめっき層１−２、クロメート皮膜を施した場合にはこのクロメート皮膜をも足した直径Ｄ１（図１参照）以下とすることが好ましい。
樹脂被覆金属管の樹脂層１−３を外部よりロール２により径方向で内方へ押圧すると、該樹脂層が金属管１−１のめっき層１−２から剥取られる理由は定かではないが、押圧しながら回動するロール２により樹脂層１−３が延ばされて該樹脂層の内周面が拡張され、ロール２の回動により前記延びに関しては何らの影響も受けないめっき層１−２と前記樹脂層１−３の拡張された内周面との間の界面で剥離が発生して樹脂層１−３のみが剥取られるものと思われる。
【００１３】
つぎに図３に示される実施例について説明すると、この実施例では樹脂層１−３は薄膜状の樹脂製内層１−３′と厚膜状で該内層より軟質の樹脂製外層１−３″からなる重合被覆層として形成したものであって、内層１−３′が外層１−３″より硬質の樹脂層で形成されているため前記と同様にロール２により前記外層の延び量が内層のそれより大きいために外層１−３″と内層１−３′との界面において剥離が発生して該外層１−３″のみが簡単に剥取られることとなる。このように外層１−３″を内層１−３′より軟質の樹脂で形成すれば本発明の装置を使用して外層のみを剥取ることができるのである。なお図３ではロール２を回動させつつ樹脂被覆金属管１の軸芯方向へも移動させているために端末加工の加工代を大きくとることができるとともに、単一のロール２より該ロールの長さに関係なく剥取ることができるので、加工代の長さによる制限を受けることがない。
【００１４】
なお図１ないし図３においては樹脂被覆金属管１を固定し、ロール２を回動させつつ樹脂層１−３の外周面を径方向で内方に押圧して移動させる例を説明したが、本発明は樹脂被覆金属管１と該樹脂被覆金属管の樹脂層１−３を押圧するロール２とを相対的に周方向に移動させればよく、したがってロール２を回動可能に固定して、かつ径方向で内方へ付勢しつつ樹脂被覆金属管１を回転させるようにして実施しても同様な効果が得られる。
【００１５】
また上記実施例では樹脂層１−３を押圧する手段としてロール２を用いた例を説明したが、これに替え図４に示すような一対の平板状部材６、６′を用いることもできる。この実施例では、一対の平板状部材６、６′を樹脂被覆金属管１の接線方向に、かつ相互に平行して相対する方向に前記樹脂層１−３を押圧しつつ移動せしめ、ついで平板状部材６、６′をそれぞれ逆方向に移動し、この操作を所望により複数回繰返して往復動させることにより樹脂層１−３を金属管１−１から剥取るものである。
【００１６】
さらに上記した実施例では金属管の外周面に樹脂層を施した樹脂被覆金属管について説明したが、本発明は内部を流れる流体が腐食性のあるものである時に、内周面に樹脂層を設けて耐食性を向上したような金属管の管端部にフレアなどの端末加工を施す場合、内周面のこの部分に被覆された樹脂層を剥取るにも有効なものである。
【００１７】
【発明の効果】
以上述べた通り本発明によれば、極めて簡単で下地に損傷を与えることなく、かつ確実に樹脂層を剥取ることができ、また重合被覆樹脂層を設けた場合でも外層が内層より軟質の樹脂からなる場合には外層のみを剥取ることができる樹脂被覆金属管の樹脂層の剥取方法およびその装置を提供することができる。
【図面の簡単な説明】
【図１】 本発明にかかる樹脂被覆金属管の樹脂層の剥取装置の一実施例を示す一部拡大断面図である。
【図２】 図１の装置の正面図である。
【図３】 他の実施例の横断半截図である。
【図４】 さらに他の実施例の図で、（ａ）は横断半截図、（ｂ）は正面図である。
【符号の説明】
１ 樹脂被覆金属管
１−１ 金属管
１−２ めっき層
１−３ 樹脂層
１−３′ 内層
１−３″ 外層
２ ロール
３ カラー
３−１ リテーナ
６、６′ 平板状部材
Ｄ０ 直径
Ｄ１ 直径[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a chipping during traveling in a metal pipe having a relatively small diameter of 20 mm or less, which is disposed in a lower part of a vehicle body as a hydraulic pipe, a fuel pipe, an air pipe or other pipe used in an automobile or the like. In order to have corrosion resistance against (stepping stones) and splash (muddy water), it has a film-like resin layer on its outer peripheral surface, and in order to perform end processing such as grooves, spools, bulges, flares, etc. And / or a method and an apparatus for stripping the film-like resin layer of the resin-coated metal tube in order to form a grip portion for a clamp member in the intermediate portion.
[0002]
[Prior art]
In recent years, hydraulic piping such as power steering, fuel main piping, return piping, evaporation piping, and other piping installed in the lower part of automobiles and other piping are coated with resin to provide chipping resistance and splash resistance. A number of resin-coated metal tubes are used that are formed at least in the form of a thin film and, if necessary, in the form of a thick film.
As a specific example of such a coated metal tube, a chromate film is formed on the zinc or zinc / nickel plating layer by plating such as electricity, chemistry, and melting applied to the outer peripheral surface of the metal tube as necessary. Then, an epoxy primer having a thickness of about 20 μm and polyvinyl fluoride (PVF) are coated, and a heat-shrinkable tube is further applied over the entire length to form a polymer coating layer. Polyamide resin (PA) or polypropylene (PP) such as PA11 or PA12 having a thickness of about 200 to 300 μm on a zinc pipe or zinc / aluminum plating layer applied to the outer periphery of a metal tube or a metal tube Those obtained by extruding a resin such as are known.
[0003]
When carrying out terminal processing such as grooves, spools, bulges, flares, etc. on such coated metal tubes or polymerized coated metal tubes, or when forming a gripping portion by a clamp member, the outer resin layer is peeled off in advance. There is a need. Such stripping work is conventionally performed by buffing or cutting with a wire buff.
[0004]
[Problems to be solved by the invention]
However, the wire buffing is not uniform in the contact of the wire, the stripping becomes uneven, and the resin layer cannot be completely stripped. In some cases, the resin layer to be left as an inner layer may be damaged, and the corrosion resistance deteriorates.
[0005]
On the other hand, in the stripping work by cutting, the resin layer cannot be removed uniformly due to variations in the accuracy of the target metal tube, such as roundness, straightness, outer diameter, wall thickness, etc. Even the plating layer and the resin layer that should remain as the inner layer may be scraped off or damaged. In either method, it takes time and effort to remove the resin layer without damaging the underlying plating layer or the inner layer, and it is necessary to remove the resin layer uniformly. It was strongly desired.
[0006]
The object of the present invention is very simple, without damaging the substrate, and can reliably peel off the resin layer, and even when the polymer-coated resin layer is provided, the outer layer is made of a softer resin than the inner layer. Is to provide a method and apparatus for removing a resin layer of a resin-coated metal tube capable of removing only the outer layer.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a first embodiment of the present invention comprises a resin-coated metal tube formed by adhering a polymer resin layer of an epoxy resin and PVF, and a resin layer made of polypropylene, polyethylene or polyamide resin. When the resin layer is peeled off, a plurality of rotating rolls disposed on the outer peripheral surface of the resin-coated metal tube and applied with a pressing force in the tube radial direction and inward of the tube, or a press provided with a pair of flat members The resin layer is pressed by the means, and the resin-coated metal tube and the resin layer pressing means are relatively moved in the pipe circumferential direction, and the outer peripheral surface of the metal tube is moved by the resin layer pressing means. The method is characterized in that a plastic layer is subjected to plastic working and the resin layer pressing means is moved also in the axial direction of the metal tube to remove the resin layer of the resin-coated metal tube.
[0008]
In addition, in the second embodiment of the present invention, after the base treatment is performed on the outer peripheral surface of the metal tube, the same epoxy resin and PVF polymer resin layer as described above, and a resin layer made of polypropylene, polyethylene or polyamide resin are provided. In an apparatus for peeling off the resin layer from a resin-coated metal tube formed by deposition, a plurality of rotations arranged on the outer peripheral surface of the resin-coated metal tube and applied with a pressing force in the tube radial direction and inward of the tube A pressing means having a roll or a pair of flat plate members and means for relatively moving the metal tube and the resin layer pressing means in the circumferential direction are provided, and the resin layer pressing means is a metal It is characterized by a resin layer stripping device that is also movable in the axial direction of the tube.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a partially enlarged sectional view showing an embodiment of a resin layer peeling apparatus for a resin-coated metal tube according to the present invention, and FIG. FIG. 3 is a cross-sectional half view of another embodiment, FIG. 4 is a view of still another embodiment, (a) is a cross-sectional half view, and (b) is a front view.
[0010]
The present invention is, after being subjected to surface treatment such as plating layer on the outer peripheral surface of the metal pipe, upon剥取Ru the resin layer of the resin layer from the resin-coated metal tube obtained by adhering the outer peripheral surface of the resin-coated metal tube The resin layer is pressed by a plurality of rotating rolls or a pressing means having a pair of flat plate members that are disposed in the tube and applied with a pressing force in the tube radial direction and inward of the tube, and the metal tube and the pressing An embodiment will be described with reference to FIG. 1 and FIG. 2, which is characterized by relatively moving the means in the circumferential direction.
[0011]
1 is a relatively small diameter composed of an electric resistance welded tube, a seamless tube, a semi-seamless tube, and a brazed tube or a welded tube that has been pre-coated with a copper alloy plating layer in a single layer or multiple layers, for example, a tube diameter of about 20 mm or less. A metal pipe 1-1 made of a steel pipe, and a plating layer 1-2 of zinc, zinc / nickel or zinc / aluminum formed on the outer peripheral surface of the metal pipe by a plating method such as electricity, chemistry, or fusion; A chromate film is applied to the upper surface of the plating layer as required, and a polymer resin layer of epoxy resin and PVF coated on the outer peripheral surface thereof, a film-like single layer resin layer made of polypropylene, polyethylene or polyamide resin and 1-3, a resin-coated metal tube comprising a plurality so as to press the resin layer 1-3 of the resin-coated metal tube 1 in the pipe diameter direction from the outside to the tube inwardly The roll 2 is held in the ring-shaped collar 3 via the retainer 3-1, and the roll 2 rotates while pressing the resin layer 1-3 of the resin-coated metal tube 1 by rotating the collar 3. The resin layer 1-3 is peeled off.
In the present invention, it is not always necessary to dispose the roll 2 in the collar 3 via the retainer 3-1, and the rotation center axis of the roll 2 is moved along the outer peripheral surface of the resin-coated metal tube 1. Is essential.
[0012]
At this time, the diameter D 0 of a virtual circle drawn on the outer peripheral surface of the roll 2 facing the metal tube 1-1.
The diameter excluding the resin layer 1-3 to be stripped (see FIG. 2), that is, the diameter D 1 including the chromate film when the metal tube 1-1, the plating layer 1-2, and the chromate film are applied. (Refer to FIG. 1) The following is preferable.
Although the resin layer 1-3 of the resin-coated metal tube is pressed inward in the radial direction by the roll 2 from the outside, the reason why the resin layer is peeled off from the plating layer 1-2 of the metal tube 1-1 is not clear. The resin layer 1-3 is extended by the roll 2 that rotates while being pressed, and the inner peripheral surface of the resin layer is expanded, and the plating layer 1 that is not affected by the extension by the rotation of the roll 2. -2 and the expanded inner peripheral surface of the resin layer 1-3 are considered to be peeled off and only the resin layer 1-3 is peeled off.
[0013]
Next, the embodiment shown in FIG. 3 will be described. In this embodiment, the resin layer 1-3 has a thin resin inner layer 1-3 ′ and a thick resin film outer layer 1-3 ″ that is softer than the inner layer. Since the inner layer 1-3 ′ is formed of a harder resin layer than the outer layer 1-3 ″, the amount of extension of the outer layer by the roll 2 is the same as that of the inner layer 1-3 ′. Since it is larger than that, peeling occurs at the interface between the outer layer 1-3 "and the inner layer 1-3 ', and only the outer layer 1-3" is easily peeled off. Thus, if the outer layer 1-3 ″ is formed of a softer resin than the inner layer 1-3 ′, only the outer layer can be peeled off using the apparatus of the present invention. Since the resin-coated metal tube 1 is also moved in the axial center direction, the machining allowance for the terminal processing can be increased, and the single roll 2 can be stripped regardless of the length of the roll. Because it can, it will not be limited by the length of the machining allowance.
[ 0014 ]
In addition, although FIG. 1 thru | or FIG. 3 demonstrated the example which fixes the resin-coated metal tube 1 and moves the outer peripheral surface of the resin layer 1-3 inward in the radial direction while rotating the roll 2, In the present invention, the resin-coated metal tube 1 and the roll 2 that presses the resin layer 1-3 of the resin-coated metal tube may be relatively moved in the circumferential direction. Even when the resin-coated metal tube 1 is rotated while being urged inward in the radial direction, the same effect can be obtained.
[ 0015 ]
Moreover, although the example which used the roll 2 as a means to press the resin layer 1-3 was demonstrated in the said Example, it replaces with this and a pair of flat plate members 6 and 6 'as shown in FIG. 4 can also be used. In this embodiment, a pair of flat plate members 6 and 6 'are moved while pressing the resin layer 1-3 in a direction tangential to the resin-coated metal tube 1 and in a direction parallel to each other and then flat. The members 6 and 6 'are respectively moved in the opposite directions, and this operation is repeated a plurality of times as desired to reciprocate the resin layer 1-3 from the metal tube 1-1.
[ 0016 ]
Further, in the above-described embodiment, the resin-coated metal tube having a resin layer provided on the outer peripheral surface of the metal tube has been described. When end processing such as flare is applied to the tube end portion of the metal tube that has been provided to improve the corrosion resistance, it is also effective for peeling off the resin layer coated on this portion of the inner peripheral surface.
[ 0017 ]
【The invention's effect】
As described above, according to the present invention, the resin layer can be peeled off reliably and without damage to the base, and even when a polymerized resin layer is provided, the outer layer is a softer resin than the inner layer. In the case of comprising, it is possible to provide a method and apparatus for removing a resin layer of a resin-coated metal tube that can peel only the outer layer.
[Brief description of the drawings]
FIG. 1 is a partially enlarged cross-sectional view showing an embodiment of a resin layer peeling apparatus for a resin-coated metal tube according to the present invention.
FIG. 2 is a front view of the apparatus of FIG.
FIG. 3 is a cross-sectional half view of another embodiment.
[4] In addition to FIG other embodiments, (a) shows the cross half-cut view, (b) is a front view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Resin-coated metal pipe 1-1 Metal pipe 1-2 Plating layer 1-3 Resin layer 1-3 'Inner layer 1-3 "Outer layer 2 Roll 3 Color 3-1 Retainer 6, 6' Flat plate member D 0 diameter D 1 diameter
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25768997A JP4187116B2 (en) | 1997-09-06 | 1997-09-06 | Method and apparatus for stripping resin layer of resin-coated metal tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25768997A JP4187116B2 (en) | 1997-09-06 | 1997-09-06 | Method and apparatus for stripping resin layer of resin-coated metal tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1182820A JPH1182820A (en) | 1999-03-26 |
| JP4187116B2 true JP4187116B2 (en) | 2008-11-26 |
Family
ID=17309751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25768997A Expired - Lifetime JP4187116B2 (en) | 1997-09-06 | 1997-09-06 | Method and apparatus for stripping resin layer of resin-coated metal tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4187116B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4232947B2 (en) * | 2002-05-17 | 2009-03-04 | 臼井国際産業株式会社 | Resin-coated metal tube and method for removing resin layer of resin-coated metal tube |
| JP4548819B2 (en) * | 2003-09-24 | 2010-09-22 | 臼井国際産業株式会社 | Stripping method of resin layer of resin-coated metal pipe |
| JP4766874B2 (en) | 2004-01-14 | 2011-09-07 | 臼井国際産業株式会社 | Method for removing resin layer of resin-coated metal tube |
| JP4794889B2 (en) * | 2005-04-07 | 2011-10-19 | 三桜工業株式会社 | Quick connector |
| US7971912B2 (en) | 2005-04-07 | 2011-07-05 | Sanoh Kogyo Kabushiki Kaisha | Quick connector |
| WO2022259412A1 (en) * | 2021-06-09 | 2022-12-15 | 三菱電機株式会社 | Coated-surface modification device and production method for rotary compressor |
-
1997
- 1997-09-06 JP JP25768997A patent/JP4187116B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1182820A (en) | 1999-03-26 |
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