JP3133451U

JP3133451U - Bobbin for metal wire rod

Info

Publication number: JP3133451U
Application number: JP2007003072U
Authority: JP
Inventors: 吉▲広▼ 後藤; 英樹吉村
Original assignee: 月産業有限会社
Priority date: 2007-04-27
Filing date: 2007-04-27
Publication date: 2007-07-12
Anticipated expiration: 2017-04-27

Abstract

【課題】フランジ部に働く曲げモーメントに対抗できる剛性強度を備えつつ、縦繰り出しの際の線材とボビンとの接触面積を低減することのできる金属線材用ボビンを提供すること。
【解決手段】空円筒状の胴部（５）と、胴部の両開口端部から半径方向外側に張り出した１対のドーナツ状のフランジ部（６）とを有し、フランジ部には、それぞれ外周縁に円筒状の縁部（６ｂ）が設けられたボビン本体（２）と、中央に軸穴（３ａ）が設けられた略ドーナツ状の円盤部（３０）を有し、ボビン本体に嵌合して両フランジ部の端面を覆う１対の蓋体（３）とを具え、両フランジ（６）部間の胴部（５）外周面がエナメル細線などの金属線材の巻取り用に形成されたボビン（１）において、蓋体円盤部（３０）の外周縁に円筒状の鍔部（３１）を設け、鍔部の外径を縁部（６ｂ）の内径よりやや小径に成形し、縁部の幅（Ｘ）を鍔部の幅（Ｙ）の略半分にする。
【選択図】図２PROBLEM TO BE SOLVED: To provide a metal wire rod bobbin capable of reducing a contact area between a wire rod and a bobbin during longitudinal feeding while having a rigidity strength capable of resisting a bending moment acting on a flange portion.
SOLUTION: An empty cylindrical body portion (5) and a pair of donut-shaped flange portions (6) projecting radially outward from both opening end portions of the body portion, Each bobbin body (2) having a cylindrical edge (6b) at the outer peripheral edge and a substantially donut-shaped disk portion (30) having a shaft hole (3a) at the center, It has a pair of lids (3) that fit and cover the end faces of both flanges, and the outer surface of the body (5) between the two flanges (6) is for winding metal wires such as enameled thin wires. In the formed bobbin (1), a cylindrical collar part (31) is provided on the outer peripheral edge of the lid disk part (30), and the outer diameter of the collar part is formed to be slightly smaller than the inner diameter of the edge part (6b). The width (X) of the edge is made substantially half of the width (Y) of the collar.
[Selection] Figure 2

Description

この考案は、金属線材用ボビンの改良に関し、詳しくは、金属線材用ボビンから金属線材を縦繰り出して使用する際の金属線材とボビンとの摩擦を低減する技術に関するものである。 The present invention relates to improvement of a metal wire rod bobbin, and more particularly to a technique for reducing friction between a metal wire rod and a bobbin when the metal wire rod is fed out from a bobbin for metal wire rod.

エナメル線などの線径の細い、いわゆる極細線と呼ばれる金属製細線は、運搬コストなどを考慮し、重量の比較的軽い樹脂から成形されたボビンに巻き付けられて、モーターメーカーなどの機器メーカーへ運搬され、そこで、ボビンから金属製細線が引き出されてモーターコイルなどの製品に加工されている。この際、ボビンから金属製細線を繰り出す方法には、図８に示すように、（Ａ）縦繰り出しと（Ｂ）横繰り出しの２種類があり、金属細線が巻かれて重くなっているボビンを回転軸に装着し易いなどの理由から縦繰り出しが一般的となっている。この縦繰り出しでは、図８（Ａ）に示すように、フランジ部の外周縁に金属細線が接触しながら繰り出されていく。 Thin metal wires, such as enameled wires, called so-called extra-fine wires, are wound around bobbins molded from relatively light resin and transported to equipment manufacturers such as motor manufacturers in consideration of transportation costs. Therefore, a thin metal wire is drawn from the bobbin and processed into a product such as a motor coil. At this time, as shown in FIG. 8, there are two types of methods of feeding the metal thin wire from the bobbin: (A) vertical feeding and (B) horizontal feeding. Longitudinal extension is common because it is easy to attach to the rotating shaft. In this vertical feeding, as shown in FIG. 8 (A), the fine metal wire is fed while contacting the outer peripheral edge of the flange portion.

ところで、ボビンのフランジ部には、ボビンに線材を巻き取る際の線材の張力によりボビン本体が変形する応力で、フランジ部を外側に曲げ倒す方向に曲げモーメントが働いている。この曲げモーメントは、巻き取る線材の張力と巻き数とに相関関係があるため、金属製の極細線をボビンに巻き取る場合では、他の線材と比べて当然張力、巻き数ともに増加するのでかなり大きな力となっている。そのため、軽量化のために他の材質と比べて比較的剛性の低い樹脂から成形されたボビンでは、フランジ部の剛性強度を確保することが困難であるという問題があった。また、フランジ部の剛性が保たれていない場合、縦繰り出しの際の線材の重量が鍔部に加算されることにより、更にフランジ部を外倒しする方向に力が加わり、フランジ部が変形して外倒れを起こし、ボビンに巻いていた金属線材が巻き崩れ、線の繰り出しができなくなるという問題があった。 By the way, a bending moment acts on the flange portion of the bobbin in the direction of bending the flange portion outward due to the stress that deforms the bobbin main body due to the tension of the wire rod when the wire rod is wound around the bobbin. Since this bending moment has a correlation between the tension of the wire to be wound and the number of windings, when winding a metal fine wire around a bobbin, the tension and the number of windings naturally increase compared to other wires, so It has become a great power. For this reason, there is a problem that it is difficult to ensure the rigidity and strength of the flange portion in a bobbin formed from a resin having relatively low rigidity compared to other materials for weight reduction. In addition, if the rigidity of the flange is not maintained, the weight of the wire at the time of vertical feeding is added to the flange, so that a force is further applied in the direction of overturning the flange and the flange is deformed. There was a problem that the metal wire rod wound around the bobbin collapsed due to falling outside, and the wire could not be fed.

このような問題点を解決するために、従来は、図９に示すように、フランジ部のリブを高くすることや、胴部やブランジ部の厚さを厚くすることで対応していた（例えば、特許文献１）。しかし、このようにリブを高くするなどの方法で対応する場合では、フランジ部の鍔部の幅が広くなってしまい、前述のように縦繰り出しで金属線材を引き出す際に線とボビンとの接触面積が大きくなり、線がボビンに絡んで巻き込み断線してしまうという問題があった。また、樹脂成形品は、一般に厚さが厚くなるとヒケ（ヒケとは、樹脂が固化する際に体積が縮小し、表面にへこみなどの不具合が発生する現象をいう。以下同じ。）が発生し易くなり、そのため、胴部やフランジ部の厚さを厚くすると鍔部の真円性や平滑性が損なわれ、断線の要因となるという問題があった。 In order to solve such problems, conventionally, as shown in FIG. 9, it has been dealt with by increasing the rib of the flange portion or by increasing the thickness of the trunk portion or the bringe portion (for example, Patent Document 1). However, in the case of dealing with such a method of raising the rib, the width of the flange portion of the flange portion becomes wide, and when the metal wire is drawn out by vertical feeding as described above, the contact between the wire and the bobbin There is a problem that the area becomes large and the wire is entangled with the bobbin and is broken. In addition, resin molded products generally have sink marks (sink marks are phenomena in which the volume decreases when the resin solidifies and defects such as dents occur on the surface; the same applies hereinafter). For this reason, when the thickness of the body portion or the flange portion is increased, the roundness and smoothness of the collar portion are impaired, which causes a disconnection.

そこで、本出願人は、ボビン本体の胴部両端に、フランジ部の内周側一部まで被覆可能な外径の円盤状の蓋部を有する蓋部材を設け、フランジ部の胴部近くの強度を増したボビンを提供した（特許文献２参照）。しかし、この特許文献２に記載の巻取り用ボビンは、フランジ部が外側に倒れるのを効果的に抑止し、かつ胴部等の変形が少なくなることを目的としており、蓋部材は、フランジ部の胴部近くの接続部分をあくまでも補助的に補強するものであり、前述のフランジ部を外倒しする方向に働く曲げモーメントに対抗するのは主にフランジ部のリブの高さであった。そのため、鍔部の幅自体は、従来と比べてあまり小さくなっておらず、前記のような問題を全て解消するには至っていなかった。特に、縦繰り出しで金属線材を引き出す際の線とボビンとの摩擦による不具合を解消できず、例えば、金属線材がエナメル線などの被覆線材である場合には、摩擦により接触部分に静電気が溜まり、それによりボビンに線材が吸い付けられ断線するなどの問題もあった。 Therefore, the present applicant provides a lid member having a disk-shaped lid portion with an outer diameter that can cover up to a part of the inner peripheral side of the flange portion at both ends of the body portion of the bobbin body, and the strength near the flange portion of the trunk portion. Provided a bobbin with increased (see Patent Document 2). However, the winding bobbin described in Patent Document 2 is intended to effectively prevent the flange portion from falling outward, and to reduce deformation of the body portion and the like. The connecting portion near the body portion is merely supplementarily reinforced, and it is mainly the height of the rib of the flange portion that resists the bending moment acting in the direction in which the flange portion is tilted outward. For this reason, the width of the collar portion itself is not so small as compared with the prior art, and it has not been possible to solve all the above problems. In particular, failure due to friction between the wire and the bobbin when pulling out the metal wire by vertical feeding cannot be solved.For example, when the metal wire is a coated wire such as enameled wire, static electricity accumulates at the contact part due to friction, As a result, there was a problem that the wire rod was attracted to the bobbin and disconnected.

実用新案登録第３０６５８４７号公報Utility Model Registration No. 30658847 特開２００４−１２３３０９号公報JP 2004-123309 A

そこでこの考案は、前記従来の問題を解決し、前記のようなフランジ部に働く曲げモーメントに対抗できる剛性強度を備えつつ、縦繰り出しの際の線材とボビンとの接触面積を低減することのできる金属線材用ボビンを提供することを目的とする。 Therefore, the present invention solves the conventional problems and can reduce the contact area between the wire rod and the bobbin during the longitudinal feeding while having a rigidity strength capable of resisting the bending moment acting on the flange portion as described above. It aims at providing the bobbin for metal wires.

前記の目的を達成するために、請求項１の考案は、中空円筒状の胴部と、該胴部の両開口端部から半径方向外側に張り出した１対のドーナツ状のフランジ部とを有し、該フランジ部には、それぞれ外周縁に円筒状の縁部が設けられたボビン本体と、中央に軸穴が設けられた略ドーナツ状の円盤部を有し、前記ボビン本体に嵌合して前記両フランジ部の端面を覆う１対の蓋体とを具え、前記両フランジ部間の胴部外周面がエナメル細線などの金属線材の巻取り用に形成されたボビンにおいて、前記蓋体円盤部の外周縁に円筒状の鍔部を設け、該鍔部の外径を前記縁部の内径よりやや小径に成形し、前記縁部の胴部軸方向の幅を前記鍔部の幅の略半分にしたことを特徴とする。 In order to achieve the above object, the invention of claim 1 has a hollow cylindrical body portion and a pair of donut-shaped flange portions projecting radially outward from both opening ends of the body portion. The flange portion has a bobbin main body provided with a cylindrical edge portion on the outer peripheral edge and a substantially donut-shaped disc portion provided with a shaft hole in the center, and is fitted to the bobbin main body. And a pair of lids covering the end surfaces of the two flange portions, and a bobbin in which a body outer peripheral surface between the flange portions is formed for winding a metal wire such as an enameled thin wire. A cylindrical collar is provided on the outer peripheral edge of the part, the outer diameter of the collar is formed to be slightly smaller than the inner diameter of the edge, and the width of the edge in the trunk axial direction is substantially the width of the collar. Characterized by halving.

請求項２の考案は、請求項１において、前記蓋体は、円盤部の裏面から内側へ突出し、外径が前記胴部の内径と略同径の円筒状の嵌合部を有し、該嵌合部で前記胴部の内周面に嵌合されていることを特徴とする。 The invention of claim 2 is the invention according to claim 1, wherein the lid body has a cylindrical fitting portion that protrudes inward from the back surface of the disk portion and has an outer diameter that is substantially the same as the inner diameter of the body portion, The fitting portion is fitted to the inner peripheral surface of the body portion.

請求項３の考案は、請求項１又は２において、前記ボビン本体と前記蓋体とが固着され、前記蓋体には、回転駆動用のケリ穴が少なくとも１つ設けられていることを特徴とする。 The invention of claim 3 is characterized in that, in claim 1 or 2, the bobbin main body and the lid are fixed, and the lid is provided with at least one screw hole for rotational driving. To do.

請求項４の考案は、請求項１ないし３のいずれかにおいて、前記蓋体には、円盤部に、その外周縁に沿って複数の貫通孔が設けられていることを特徴とする。 The invention of claim 4 is characterized in that, in any one of claims 1 to 3, the lid is provided with a plurality of through holes along the outer peripheral edge of the disk portion.

請求項５の考案は、請求項１ないし４のいずれかにおいて、前記ボビン本体は、樹脂から一体成形されていることを特徴とする。 According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the bobbin main body is integrally formed from a resin.

この考案は、前記のようであって、中空円筒状の胴部と、該胴部の両開口端部から半径方向外側に張り出した１対のドーナツ状のフランジ部とを有し、該フランジ部には、それぞれ外周縁に円筒状の縁部が設けられたボビン本体と、中央に軸穴が設けられた略ドーナツ状の円盤部を有し、前記ボビン本体に嵌合して前記両フランジ部の端面を覆う１対の蓋体とを具え、前記両フランジ部間の胴部外周面がエナメル細線などの金属線材の巻取り用に形成されたボビンにおいて、前記蓋体円盤部の外周縁に円筒状の鍔部を設け、該鍔部の外径を前記縁部の内径よりやや小径に成形したので、フランジ部に該フランジ部を外側へ倒す力が働いた際、その曲げモーメントを主に蓋体の鍔部に負担させることにより、縁部の胴部軸方向の幅を鍔部の幅の略半分にでき、フランジ部に働く外倒しの曲げモーメントに対抗できる剛性強度を備えつつ、縦繰り出しの際の線材とボビンとの接触面積を低減することができる。そのため、縦繰り出しにより線材を引き出しても巻き崩れがほとんどなく、線材とボビンとの摩擦による不具合を低減することができる。 This invention is as described above, and has a hollow cylindrical body portion and a pair of donut-shaped flange portions projecting radially outward from both opening end portions of the body portion. Each of which has a bobbin main body provided with a cylindrical edge portion on the outer peripheral edge and a substantially donut-shaped disc portion provided with a shaft hole in the center, and is fitted to the bobbin main body and the both flange portions A bobbin in which a body outer peripheral surface between the flange portions is formed for winding a metal wire such as an enameled thin wire, and is formed on the outer peripheral edge of the lid disk portion. Since a cylindrical collar is provided and the outer diameter of the collar is formed to be slightly smaller than the inner diameter of the edge, the bending moment is mainly applied to the flange when a force to tilt the flange outward is applied. By placing the burden on the buttock of the lid, the width of the edge of the trunk in the axial direction is the same as the width of the buttock. Half can turn, while providing rigidity strength to counteract the outer defeat the bending moment acting on the flange portion, the contact area between the wire and the bobbin during vertical feeding can be reduced. Therefore, even if the wire is pulled out by vertical feeding, there is almost no collapse and the trouble due to the friction between the wire and the bobbin can be reduced.

請求項２に記載の考案は、請求項１に記載の考案において、前記蓋体は、円盤部の裏面から内側へ突出し、外径が前記胴部の内径と略同径の円筒状の嵌合部を有し、該嵌合部で前記胴部の内周面に嵌合されているので、つまり、縦繰り出しの際にフランジ部を外側である上方へ曲げる力が働いてフランジ部が少し変形した場合であっても、変形量が少ない中心部付近の胴部で嵌合されているので、蓋体が、フランジ部から外れ難く、更に、ボビンから縦繰り出しにより線材を引き出しても巻き崩れることを少なくすることができる。 The invention according to claim 2 is the invention according to claim 1, wherein the lid protrudes inward from the back surface of the disk portion, and has a cylindrical fitting whose outer diameter is substantially the same as the inner diameter of the body portion. And the fitting part is fitted to the inner peripheral surface of the body part, that is, the flange part is slightly deformed by the force that bends the flange part upwards when it is extended vertically. Even if it is a case, since it is fitted at the body part near the center part with a small amount of deformation, the lid body is difficult to come off from the flange part, and even if the wire rod is pulled out from the bobbin by vertical feeding, it can be crushed. Can be reduced.

請求項３に記載の考案は、請求項１又は２に記載の考案において、前記ボビン本体と前記蓋体とが固着され、前記蓋体には、回転駆動用のケリ穴が少なくとも１つ設けられているので、ケリ穴を使ってボビンを回転させることができ、ボビンに金属線材を巻き取る際、容易に巻き取ることができる。 The invention according to claim 3 is the invention according to claim 1 or 2, wherein the bobbin main body and the lid are fixed, and the lid is provided with at least one button hole for rotation driving. Therefore, the bobbin can be rotated using the buttonhole, and when the metal wire is wound around the bobbin, it can be easily wound.

請求項４に記載の考案は、請求項１ないし３のいずれかに記載の考案において、前記蓋体には、円盤部に、その外周縁に沿って複数の貫通孔が設けられているので、蓋体の重量を軽くすることができる。また、ボビン本体の貫通孔から見える箇所に、製造年月日、金属線材の品番等の必要な情報を刻印、又は、印刷などで明示できる共に、蓋体で覆って見栄えをよくし、且つ、必要なときには蓋体を付けたままでもその情報を視認することができる。 The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the lid body is provided with a plurality of through holes along the outer peripheral edge of the disc portion. The weight of the lid can be reduced. In addition, the necessary information such as the date of manufacture and the part number of the metal wire can be clearly marked by marking or printing at the location visible from the through-hole of the bobbin body, and it is covered with a lid to improve its appearance, and When necessary, the information can be visually recognized even with the lid attached.

請求項５に記載の考案は、請求項１ないし４のいずれかに記載の考案において、前記ボビン本体は、樹脂から一体成形されているので、ボビンを軽量化することができると共に、容易に、短時間で大量に製造できるので、製造コストを低減することができる。 The device according to claim 5 is the device according to any one of claims 1 to 4, wherein the bobbin body is integrally formed from a resin, so that the bobbin can be reduced in weight and easily. Since a large amount can be manufactured in a short time, the manufacturing cost can be reduced.

この考案の一実施の形態を、添付した図面を参照しながら詳細に説明する。 An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

図１は、本考案の実施の形態に係るボビンを示す斜視図、図２は、図１のボビンから天板となる上部蓋体を外した状態を示す分解斜視図、図３は、図１のボビンから上部蓋体を外した状態で上方から見下ろしたボビン本体の平面図である。
図に示すボビン１は、ボビン本体２と上下１対の蓋体３，３’とから構成され、蓋体３，３’がボビン本体２に接着や融着などの手段により固着されている。ボビン本体２は、両端が開口した中空円筒状の胴部５と、胴部５の両端付近から半径方向外側に略直角に張り出したフランジ部６，６’とを有し、合成樹脂からインジェクション成形などの方法により一体成形されている。この胴部５の内部の長さ方向中央部には、長さが短尺な中空円筒状の管部５ａが胴部５と同芯状に配設されており、放射状に配設された複数本のアームやドーナツ状の円盤などの支持材５ｂで胴部５に支持されている。また、胴部５の周壁の厚さは、ボビンに巻かれる線材の張力による変形を考慮し、長さ方向の中央が厚く、両端が薄く成形されている（図７参照）。尚、本実施の形態では、支持材５ｂは、ドーナツ状の円盤形状となっている。 FIG. 1 is a perspective view showing a bobbin according to an embodiment of the present invention, FIG. 2 is an exploded perspective view showing a state in which an upper lid serving as a top plate is removed from the bobbin of FIG. 1, and FIG. It is a top view of the bobbin main body looked down from upper direction in the state which removed the upper cover body from the bobbin.
The bobbin 1 shown in the figure is composed of a bobbin main body 2 and a pair of upper and lower lid bodies 3 and 3 ′, and the lid bodies 3 and 3 ′ are fixed to the bobbin main body 2 by means such as adhesion or fusion. The bobbin main body 2 has a hollow cylindrical body portion 5 having both ends opened, and flange portions 6 and 6 'projecting from the vicinity of both ends of the body portion 5 to the outside in the radial direction at substantially right angles, and injection molding from a synthetic resin. It is integrally formed by such methods. A hollow cylindrical tube portion 5a having a short length is disposed concentrically with the body portion 5 at the center in the longitudinal direction inside the body portion 5, and a plurality of radially disposed tube portions 5a are disposed. Are supported by the body portion 5 by a support member 5b such as an arm or a donut-shaped disk. The thickness of the peripheral wall of the body portion 5 is formed such that the center in the length direction is thick and both ends are thin in consideration of deformation due to the tension of the wire wound around the bobbin (see FIG. 7). In the present embodiment, the support member 5b has a donut-shaped disk shape.

このボビン本体２のフランジ部６，６’は、内周縁で胴部５と接続するドーナツ状の円盤からなる板状部６ａ，６ａ’と、その板状部６ａ，６ａ’の外周縁から外面側（上フランジ部６では、上側、下フランジ部６’では、下側）に突出する円筒状の縁部６ｂ，６ｂ’とを備え、板状部６ａ，６ａ’の外面側には、フランジ部６，６’の曲げ強度（剛性）を補強する複数のリブが、胴部５の両端部の外周面から板状部６ａ，６ａ’の板面に沿って縁部６ｂ，６ｂ’に向けて放射状に設けられている。 The flange portions 6 and 6 ′ of the bobbin main body 2 are plate-like portions 6 a and 6 a ′ formed of donut-like disks connected to the body portion 5 at the inner peripheral edge, and outer surfaces from the outer peripheral edges of the plate-like portions 6 a and 6 a ′. Cylindrical edges 6b and 6b 'projecting to the side (upper in the upper flange portion 6, lower in the lower flange portion 6'), and on the outer surface side of the plate-like portions 6a and 6a ' A plurality of ribs that reinforce the bending strength (rigidity) of the portions 6 and 6 ′ are directed from the outer peripheral surfaces of both ends of the body portion 5 toward the edges 6 b and 6 b ′ along the plate surfaces of the plate-like portions 6 a and 6 a ′. Are provided radially.

図２、図３に示すように、このリブは、胴部５の両端部の外周縁から縁部６ｂ，６ｂ’に亘って設けられた外端の高さが内端の高さより低い台形板体（図７参照）からなる第１のリブ６ｃ，６ｃ’（下フランジ部の第１のリブ６ｃ’は、図示せず。）と、胴部５の外周縁の軸方向に沿って胴部５の端部から板状部６ａ，６ａ’の板面に亘って設けられた第１のリブより小さい台形板体からなる第２のリブ６ｄ，６ｄ’と、胴部５と板状部６ａ，６ａ’との接続部に設けられた第２のリブより更に小さい三角形板体からなる第３のリブ６ｅ，６ｅ’とから構成されている。片方のフランジ部において、第１のリブ６ｃは、胴部５の外周面を等角・等分して１２個設けられ、第２のリブ６ｄ，６ｄ’は、第１のリブ６ｃ，６ｃ’の間を等角・等分して１つづつ計１２個設けられ、第３のリブ６ｅ，６ｅ’は、第１のリブ６ｃ，６ｃ’と第２のリブ６ｄ，６ｄ’との間を等角・等分して計２４個設けられている。 As shown in FIGS. 2 and 3, this rib is a trapezoidal plate in which the height of the outer end provided from the outer peripheral edge of the both end portions of the body portion 5 to the edge portions 6b and 6b ′ is lower than the height of the inner end. A first rib 6c, 6c ′ (not shown) of the body (see FIG. 7) and a body portion along the axial direction of the outer peripheral edge of the body portion 5; 5, second ribs 6 d and 6 d ′ made of a trapezoidal plate smaller than the first rib provided over the plate surfaces of the plate-like parts 6 a and 6 a ′, and the body part 5 and the plate-like part 6 a. , 6a ′ and third ribs 6e, 6e ′ made of a triangular plate smaller than the second rib provided at the connecting portion. In one flange portion, twelve first ribs 6c are provided by equiangularly and equally dividing the outer peripheral surface of the body portion 5, and the second ribs 6d and 6d ′ are provided as the first ribs 6c and 6c ′. The third ribs 6e and 6e ′ are provided at a regular angle and equally divided between the first ribs 6c and 6e ′ and the second ribs 6d and 6d ′. There are a total of 24 equiangular and equal parts.

図４は、蓋体の裏面を示す平面図、図５は、図４の蓋体をＡ−Ａ’線で鉛直に切断した状態を示す部分切断斜視図である。
図４及び５は、下部蓋体３’の内側となる裏面を上方から見下ろした状態を示している。上部蓋体３も下部蓋体３’と同形に形成されているため、上部蓋体３については、特に図示せず下部蓋体３’で主に説明する（下部蓋体３’の構成は、符号に’を付ける。上部蓋体３は、図１及び２参照のこと）。この蓋体３，３’は、合成樹脂からインジェクション成形などで一体成形され、中央に軸穴３ａ，３ａ’が設けられた略ドーナツ状の円盤部３０，３０’と、円盤部３０，３０’の外周縁から内面側（上部蓋体３では、下面側、下部蓋体３’では、上面側）に突出する円筒状の鍔部３１，３１’と、軸穴３ａ，３ａ’の周りから内面側に突出し、ボビンの回転軸を支持する円筒状の軸穴部３２，３２’と、胴部５の内周面の内径と略同径の外径を有し、円盤部３０，３０’の裏面から内側へ突出する円筒状の嵌合部３３，３３’とを備えている。 FIG. 4 is a plan view showing the back surface of the lid, and FIG. 5 is a partially cut perspective view showing a state in which the lid of FIG. 4 is cut vertically along the line AA ′.
4 and 5 show a state in which the back surface that is the inner side of the lower lid 3 'is looked down from above. Since the upper lid 3 is also formed in the same shape as the lower lid 3 ′, the upper lid 3 will be mainly described with reference to the lower lid 3 ′ (not shown) (the configuration of the lower lid 3 ′ is The reference numeral is marked with '. Refer to Figs. 1 and 2 for the upper lid 3). The lid bodies 3 and 3 ′ are integrally molded from synthetic resin by injection molding or the like, and are substantially donut-shaped disk portions 30 and 30 ′ provided with shaft holes 3a and 3a ′ at the center, and the disk portions 30 and 30 ′. Cylindrical flanges 31, 31 ′ projecting from the outer peripheral edge to the inner surface side (the lower surface side in the upper lid body 3 and the upper surface side in the lower lid body 3 ′), and the inner surface from around the shaft holes 3 a, 3 a ′ The cylindrical shaft hole portions 32 and 32 'projecting to the side and supporting the rotating shaft of the bobbin, and the outer diameter is substantially the same as the inner diameter of the inner peripheral surface of the body portion 5, and the disk portions 30 and 30' Cylindrical fitting portions 33 and 33 ′ protruding inward from the back surface.

この円盤部３０，３０’には、ボビンに線材を巻き取る際に使用される回転駆動用のケリ穴３０ａ，３０ａ’が駆動装置に合わせた後述の嵌合部３３，３３’の内径より小さい径の同心円上に４個（１つの円盤部に）設けられている。但し、上下の蓋体に１つづつ設けられていればよく、図に示すように、様々な種類の駆動装置に合わせられるよう複数設けるとより好ましい。また、円盤部３０，３０’には、その外周縁に沿って円弧長穴形状の貫通孔３０ｂ，３０ｂ’が複数設けられている。そして、各ケリ穴３０ａ，３０ａ’の周りには、補強用の円筒状リブ３０ｃ，３０ｃ’が設けられていると共に、平板の条材からなる放射状リブ３０ｄ，３０ｄ’が、軸穴部３２，３２’から嵌合部３３，３３’に亘り等角放射状に６本設けられている。また、これらのリブと結合する環形リブ３０ｅ，３０ｅ’が、ケリ穴３０ａ，３０ａ’の中心を通るような半径を有する環形に形成されており、これらの円筒状リブ３０ｃ，３０ｃ’と放射状リブ３０ｄ，３０ｄ’と環形リブ３０ｅ，３０ｅ’は、リブの高さが同じ高さに形成されている。このように構成することで、合成樹脂から蓋体３，３’を成形する際、樹脂の溶液が均等に行き渡り易くなっている。 In the disk portions 30 and 30 ', rotational driving buttonholes 30a and 30a' used when winding the wire around the bobbin are smaller than inner diameters of fitting portions 33 and 33 'described later according to the driving device. Four (on one disk part) are provided on concentric circles with a diameter. However, it is only necessary to provide one for each of the upper and lower lids, and as shown in the figure, it is more preferable to provide a plurality so as to be adapted to various types of driving devices. The disk portions 30 and 30 ′ are provided with a plurality of through holes 30 b and 30 b ′ having an arc long hole shape along the outer peripheral edge thereof. Reinforcing cylindrical ribs 30c and 30c ′ are provided around the perforated holes 30a and 30a ′, and radial ribs 30d and 30d ′ made of flat strips are provided on the shaft hole portion 32, Six equiangular radii are provided from 32 ′ to the fitting portions 33, 33 ′. In addition, ring-shaped ribs 30e and 30e ′ coupled to these ribs are formed in a ring shape having a radius that passes through the centers of the hole 30a and 30a ′. The cylindrical ribs 30c and 30c ′ and the radial ribs are formed. The ribs 30e and 30d ′ and the annular ribs 30e and 30e ′ have the same height. With this configuration, when the lid bodies 3 and 3 ′ are molded from the synthetic resin, the resin solution is easily spread evenly.

また、鍔部３１，３１’は、縁部６ｂ（図１，２，７参照）の内径よりやや小さい外径を有し、その幅Ｙは、縁部６ｂの幅Ｘの略倍の幅となっている（図２参照）。また、この鍔部３１，３１’には、第１のリブ６ｃ，６ｃ’と対応する位置に欠き込み３１ａ，３１ａ’が設けられており、蓋体３，３’をボビン本体２に嵌合させたときに、鍔部３１，３１’とフランジ部６，６’の板状部６ａ，６ａ’とが、第１のリブ６ｃ，６ｃ’に邪魔されずに上手く当接する（図７参照）と共に、蓋体３，３’がボビン本体２と別に回転しないよう構成されている。また、軸穴部３２，３２’には、ボビン１の回転軸の軸（図示せず）と係合し、外れないようにするための係合段差３２ａ，３２ａ’が設けられており、嵌合部３３，３３’は、厚さが基端側が厚く内部の先端側が薄く形成されている。 Further, the flange portions 31 and 31 ′ have an outer diameter slightly smaller than the inner diameter of the edge portion 6b (see FIGS. 1, 2 and 7), and the width Y thereof is approximately double the width X of the edge portion 6b. (See FIG. 2). Further, the flange portions 31 and 31 ′ are provided with notches 31a and 31a ′ at positions corresponding to the first ribs 6c and 6c ′, and the lid bodies 3 and 3 ′ are fitted to the bobbin main body 2. When this is done, the flange portions 31, 31 ′ and the plate-like portions 6a, 6a ′ of the flange portions 6, 6 ′ are in good contact with the first ribs 6c, 6c ′ without being obstructed (see FIG. 7). At the same time, the lids 3 and 3 ′ are configured not to rotate separately from the bobbin main body 2. The shaft holes 32 and 32 'are provided with engagement steps 32a and 32a' for engaging with a shaft (not shown) of the rotating shaft of the bobbin 1 so as not to come off. The joint portions 33 and 33 ′ are formed such that the proximal end side is thick and the inner distal end side is thin.

図６は、図１のボビンを上方から見下ろした状態を示す平面図、図７は、上部蓋体を外した図１のボビンを図６に示すＢ−Ｂ線で鉛直に切断した状態を示すＢ−Ｂ線断面図である。
ボビン１は、前記のように構成されており、図に示すように、蓋体３，３’の外周縁に鍔部３１，３１’を設け、この鍔部３１，３１’の外径を縁部６ｂ，６ｂ’の内径よりやや小径に成形すると共に、嵌合部３３，３３’でボビン本体２の胴部５に嵌合させているので、フランジ部６，６’に外側へ倒す力が働いた場合であっても、その曲げモーメントを鍔部３１，３１’を介して蓋体３，３’に主に負担させることにより、縦繰り出しの際の線材とボビンとが接触するフランジ部６，６’の縁部６ｂ，６ｂ’の幅Ｘを、許容強度として設計上要求される従来の縁部の幅の略半分以下にでき、つまり、縁部６ｂ，６ｂ’の幅Ｘを曲げモーメントを主に負担させる鍔部３１，３１’の幅Ｙの略半分にでき、フランジ部６，６’に働く外倒しの曲げモーメントに対抗できる剛性強度を備えつつ、縦繰り出しの際の線材とボビンとの接触面積を低減することができる。そのため、縦繰り出しによりボビン１に巻かれている線材を引き出しても巻き崩れがほとんどなく、線材とボビンとの摩擦による不具合を低減することができる。また、蓋体３,３’をフランジ部６,６’の縁部６ｂ，６ｂ’内側に嵌合させると共に、曲げモーメントを主に負担する蓋体３,３’の厚みを厚くし、フランジ部６,６’の厚みを薄くすることで、蓋体３,３’がヒケにより真円性や平滑性が損なわれたとしても、線材と直接接触するフランジ部６,６’の真円性や平滑性を確保できるので、蓋体３,３’のヒケによる設計寸法との誤差が、縦繰り出しをしたときの線材の断線の要因とならないようにすることができる。そして、縦繰り出しの際にフランジ部６，６’に外側へ曲げる力が働いて少し変形した場合であっても、変形量が少ない中心部付近の胴部５で嵌合されているので、蓋体３，３’が、ボビン本体２から外れ難くなっている。また、胴部５は、長さ方向の中央が厚く、両端が薄く成形されており、嵌合部３３，３３’は、厚さが基端側が厚く内部の先端側が薄く形成されているので、嵌合させた際、両者をより確実に嵌合させることができる。 6 is a plan view showing a state where the bobbin of FIG. 1 is looked down from above, and FIG. 7 shows a state where the bobbin of FIG. 1 with the upper lid removed is cut vertically along the line BB shown in FIG. It is a BB sectional view.
The bobbin 1 is configured as described above. As shown in the drawing, the bobbin 31, 31 'is provided on the outer peripheral edge of the lid 3, 3', and the outer diameter of the hooks 31, 31 'is set to the edge. The parts 6b and 6b ′ are formed to have a diameter slightly smaller than the inner diameter, and the fitting parts 33 and 33 ′ are fitted to the body part 5 of the bobbin main body 2. Therefore, the flange parts 6 and 6 ′ have a force to be tilted outward. Even in the case of working, the flange portion 6 where the wire rod and the bobbin are brought into contact with each other by causing the bending moment to be mainly borne by the lid bodies 3 and 3 ′ via the flange portions 31 and 31 ′. , 6 'can be made to have a width X of about half or less of the width of the conventional edge required for design as an allowable strength, that is, the width X of the edges 6b, 6b' can be changed to a bending moment. Can be made approximately half the width Y of the flanges 31 and 31 ′ that mainly bear the load, and it can be used against an outward bending moment acting on the flanges 6 and 6 ′. It is possible to reduce the contact area between the wire rod and the bobbin during the longitudinal feeding while having a rigid strength that can be resisted. For this reason, even if the wire wound around the bobbin 1 is pulled out by vertical feeding, there is almost no collapse, and problems due to friction between the wire and the bobbin can be reduced. Further, the lids 3 and 3 ′ are fitted inside the edges 6b and 6b ′ of the flanges 6 and 6 ′, and the lids 3 and 3 ′ that mainly bear the bending moment are increased in thickness, so that the flanges By reducing the thickness of 6,6 ′, even if the roundness and smoothness of the lid 3,3 ′ are lost due to the sink, Since smoothness can be ensured, it is possible to prevent an error from the design dimension due to the sink of the lids 3 and 3 'from causing a disconnection of the wire rod when vertically fed. Even when the flanges 6 and 6 'are bent outwardly by a bending force and are slightly deformed during vertical extension, they are fitted by the body 5 near the center with a small amount of deformation. The bodies 3 and 3 ′ are not easily detached from the bobbin main body 2. In addition, the trunk portion 5 is thick at the center in the length direction and is thin at both ends, and the fitting portions 33 and 33 ′ are thick at the proximal end side and thin at the inner distal end side. When fitted, both can be fitted more reliably.

図６に示すように、蓋体３，３’には、円盤部３０，３０’に、その外周縁に沿って複数の貫通孔３０ｂ，３０ｂ’が設けられているので、蓋体３，３’の重量を軽くすることができる。また、貫通孔３０ｂ，３０ｂ’から見えるフランジ部６，６’の外面に、製造年月日、金属線材の品番等の必要な情報を刻印、又は、印刷などで明示できると共に、蓋体３，３’で覆って見栄えをよくし、且つ、必要なときには蓋体３，３’を付けたままでもその情報を視認することができる。 As shown in FIG. 6, the lid bodies 3, 3 ′ are provided with a plurality of through holes 30 b, 30 b ′ along the outer peripheral edge of the disk portions 30, 30 ′. 'Weight can be reduced. In addition, necessary information such as the date of manufacture and the part number of the metal wire can be clearly marked on the outer surface of the flange portions 6 and 6 ′ visible from the through holes 30b and 30b ′ by printing or printing. Covering with 3 'improves the appearance, and when necessary, the information can be visually recognized even with the lids 3 and 3' attached.

図７に示すように、軸穴部３２，３２’の内径と、管部５ａの内径は同一ではなく、管部５ａが大きく成形され、且つ、別体として構成されているので、樹脂の厚みが比較的厚い胴部５の長さ方向中央付近がヒケなどの乾燥収縮により真円度が悪くなった場合であっても、その精度が回転軸に装着するときに影響しない。また、ケリ穴３０ａ，３０ａ’が、嵌合部３３，３３’の内径より小さい径の同心円上に複数設けられているので、様々な種類の駆動装置に適合させて、線材をボビン１に巻き付けたり、巻き出したりすることができる。 As shown in FIG. 7, the inner diameters of the shaft hole portions 32 and 32 ′ and the inner diameter of the tube portion 5 a are not the same, and the tube portion 5 a is formed in a large shape and is configured as a separate body. Even when the roundness is deteriorated due to drying shrinkage such as sink marks near the center in the length direction of the relatively thick body portion 5, the accuracy does not affect when it is mounted on the rotating shaft. Further, since a plurality of buttonholes 30a and 30a ′ are provided on concentric circles having a diameter smaller than the inner diameter of the fitting portions 33 and 33 ′, the wire rod is wound around the bobbin 1 so as to be adapted to various types of driving devices. Or unwind.

前記実施の形態は好ましい一例を示したにすぎず、細部の構成は、実施に際し、実用新案登録請求の範囲の記載の範囲内で任意に修正、変更することができるものである。特に、蓋体は、合成樹脂から成形されるものに限られず、例えば、金属製であっても構わない。その場合であっても、前記効果を奏することは明らかである。 The above-described embodiment is merely a preferred example, and the detailed configuration can be arbitrarily modified and changed within the scope of the claims of the utility model registration. In particular, the lid is not limited to one molded from a synthetic resin, and may be made of metal, for example. Even in such a case, it is clear that the above-described effect is achieved.

この考案の一実施の形態に係るボビンを示す斜視図である。It is a perspective view which shows the bobbin which concerns on one embodiment of this invention. 同上のボビンから上部蓋体を外した状態を示す分解斜視図である。It is a disassembled perspective view which shows the state which removed the upper cover body from the bobbin same as the above. 同上の実施の形態に係るボビン本体を示す平面図である。It is a top view which shows the bobbin main body which concerns on embodiment same as the above. 同上の実施の形態に係る蓋体の裏面を示す平面図である。It is a top view which shows the back surface of the cover body which concerns on embodiment same as the above. 図４の蓋体をＡ−Ａ’線で切断した状態を示す部分切断斜視図である。FIG. 5 is a partially cut perspective view showing a state in which the lid of FIG. 4 is cut along the line A-A ′. 図１のボビンの平面図である。It is a top view of the bobbin of FIG. 同上のボビンを図６のＢ−Ｂ線で切断したＢ−Ｂ線断面図である。It is the BB sectional drawing which cut | disconnected the bobbin same as the above by the BB line of FIG. 従来のボビンの線材の（Ａ）縦繰り出しと（Ｂ）横繰り出しを説明する説明図である。It is explanatory drawing explaining the (A) vertical delivery and (B) horizontal delivery of the wire rod of the conventional bobbin. 従来のボビンを説明する断面図である。It is sectional drawing explaining the conventional bobbin.

Explanation of symbols

１ボビン
２ボビン本体
３，３’ 蓋体
３０，３０’ 円盤部
３０ａ，３０ａ’ ケリ穴
３０ｂ，３０ｂ’ 貫通孔
３１，３１’ 鍔部
６，６’ フランジ部
６ｂ，６ｂ’ 縁部
Ｘ縁部の幅
Ｙ鍔部の幅 DESCRIPTION OF SYMBOLS 1 Bobbin 2 Bobbin main body 3, 3 'Lid | bodies 30, 30' Disc part 30a, 30a 'Perforated hole 30b, 30b' Through-hole 31, 31 'ridge part 6, 6' flange part 6b, 6b 'edge X edge Width Y buttock width

Claims

A hollow cylindrical body portion and a pair of donut-shaped flange portions projecting radially outward from both opening ends of the body portion, each of the flange portions having a cylindrical edge on the outer periphery A bobbin main body provided with a portion, and a pair of lids having a substantially donut-shaped disk portion provided with a shaft hole in the center and covering the end surfaces of both flange portions by fitting to the bobbin main body. In the bobbin formed for winding a metal wire material such as an enamel thin wire, the outer peripheral surface of the body portion between the two flange portions,
A cylindrical collar is provided on the outer peripheral edge of the lid disc part, the outer diameter of the collar is formed to be slightly smaller than the inner diameter of the edge, and the width of the edge in the trunk axial direction is the collar. A bobbin for a metal wire characterized by being approximately half the width of the wire.

The lid body protrudes inward from the back surface of the disk portion and has a cylindrical fitting portion whose outer diameter is substantially the same as the inner diameter of the barrel portion. The fitting portion is formed on the inner peripheral surface of the barrel portion. The bobbin for metal wires according to claim 1, which is fitted.

The bobbin for a metal wire rod according to claim 1 or 2, wherein the bobbin main body and the lid are fixed, and the lid is provided with at least one screw hole for rotation driving.

The bobbin for a metal wire rod according to any one of claims 1 to 3, wherein the lid is provided with a plurality of through holes along the outer peripheral edge of the disk portion.

The said bobbin main body is a bobbin for metal wires in any one of Claim 1 thru | or 4 currently integrally molded from resin.