JP3154001U - Metal bobbin - Google Patents
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Abstract
【課題】伸線により大きな張力が加わっても変形の生じにくい金属製ボビンを提供する。【解決手段】円筒状の胴および胴の両端にそれぞれ鍔板が溶接された金属製のボビン１であって、胴は、その両端に胴の他の部分の内径よりも大きな内径を有する外側突出部１１がそれぞれ設けられ、鍔板は、その厚さ方向の一方に突出する円筒状の環状部２４を備え、環状部は、その突出側の端部に、他の部分の外径よりも小さな外径を有する内側突出部３６が設けられ、内側突出部がその外周を外側突出部の内周に接した状態で外側突出部に嵌め入れられて環状部と外側突出部とが溶接により連結されている。【選択図】図３Provided is a metal bobbin which is not easily deformed even when a large tension is applied by wire drawing. A cylindrical bobbin and a metal bobbin 1 each having a flange welded to both ends of the cylinder, the cylinder protruding outward at both ends having an inner diameter larger than the inner diameter of the other part of the cylinder. Each of which is provided with a cylindrical annular part 24 projecting in one of its thickness directions, and the annular part is smaller than the outer diameter of the other part at the end of the projecting side An inner projecting portion 36 having an outer diameter is provided, the inner projecting portion is fitted into the outer projecting portion with its outer periphery in contact with the inner periphery of the outer projecting portion, and the annular portion and the outer projecting portion are connected by welding. ing. [Selection] Figure 3
Description
本考案は、金属線材を巻き取る金属製のボビンに関する。 The present invention relates to a metal bobbin that winds a metal wire.
一般に、磁気材料、水晶振動子、半導体用ウエハおよび太陽電池用シリコン等の精密切断加工には、金属線を高速で往復運動させるワイヤーソーが使用される。
ワイヤーソーは、切りクズの発生が少ないことに加え、新たなソーワイヤーが次々と供給されることにより高い精度の加工が可能であるという長所を有する。ワイヤーソーに使用されるソーワイヤーには、ピアノ線にダイヤモンドパウダーを金属結合剤で固めたもの、またはブラスメッキもしくは銅メッキされたピアノ線等が使用される。ワイヤーソーは、高価な材料の切断に使用されるので、材料の歩留まりを向上させるために、ソーワイヤーとしてより細いものが採用される傾向にある。
In general, a wire saw that reciprocates a metal wire at high speed is used for precision cutting of a magnetic material, a crystal resonator, a semiconductor wafer, silicon for solar cells, and the like.
The wire saw has the advantage that it can be processed with high accuracy by supplying new saw wires one after another in addition to less generation of cutting scraps. As a saw wire used for a wire saw, a piano wire obtained by solidifying diamond powder with a metal binder, or a brass wire or copper plated piano wire is used. Since wire saws are used for cutting expensive materials, in order to improve the yield of materials, thinner ones tend to be employed.
ところで、このようなソーワイヤーは、製造所においてボビンに巻き取られて精密切断加工所に搬入され、ソーワイヤーが切断加工のために繰り出されて空になったボビンはソーワイヤーの製造所に戻される。
しかし、ソーワイヤーの線径が小さくなるに伴い、製造所においてソーワイヤーを巻き取る張力によりボビンに加わる圧縮力が大きくなり、ボビンの変形および破損が生じてボビンの再使用回数が減少するという問題が生じている。
これに関連する金属線材を巻き取る樹脂製ボビンの強度を高める技術が、特許文献１および特許文献２に開示されている。
By the way, such a saw wire is wound around a bobbin at a manufacturing site and carried into a precision cutting processing plant, and the bobbin that has been emptied when the saw wire is unwound for cutting processing is returned to the saw wire manufacturing plant. It is.
However, as the wire diameter of the saw wire decreases, the compressive force applied to the bobbin increases due to the tension at which the saw wire is wound at the factory, and the bobbin is deformed and broken, reducing the number of times the bobbin is reused. Has occurred.
A technique for increasing the strength of a resin bobbin that winds up a metal wire related to this is disclosed in Patent Document 1 and Patent Document 2.
特許文献１および特許文献２では、いずれも金属線材の巻き崩れおよび繰り出し不良等をするために、ボビンの変形を抑制する鍔板の強度の増加が行われている。しかし、特許文献１および特許文献２におけるボビンは樹脂で製作され、これらに開示された技術は、巻き取る伸線の線径が小さく大きな張力が加わる金属製のボビンにそのまま適用するのは難しい。
本考案は、上述の問題に鑑みてなされたもので、伸線により大きな張力が加わっても変形の生じにくい金属製ボビンを提供することを目的とする。
In both Patent Document 1 and Patent Document 2, in order to cause the metal wire to be unrolled or to be unsuccessfully fed, the strength of the rib plate that suppresses the deformation of the bobbin is increased. However, the bobbins in Patent Document 1 and Patent Document 2 are made of resin, and the techniques disclosed therein are difficult to apply as they are to metal bobbins in which the wire diameter of the drawn wire to be wound is small and a large tension is applied.
The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a metal bobbin that hardly deforms even when a large tension is applied by wire drawing.
本考案に係る金属製ボビンは、円筒状の胴および前記胴の両端にそれぞれ鍔板が溶接された金属製のボビンであって、前記胴は、その両端に前記胴の他の部分の内径よりも大きな内径を有する外側突出部がそれぞれ設けられ、前記鍔板は、その厚さ方向の一方に突出する円筒状の環状部を備え、前記環状部は、その突出側の端部に、他の部分の外径よりも小さな外径を有する内側突出部が設けられ、前記内側突出部がその外周を前記外側突出部の内周に接した状態で前記外側突出部に嵌め入れられて前記環状部と前記外側突出部とが溶接により連結されている。 A metal bobbin according to the present invention is a cylindrical bobbin and a metal bobbin in which a flange is welded to both ends of the cylinder, and the cylinder is connected to both ends of an inner diameter of another part of the cylinder. Each of which is provided with an outer protrusion having a large inner diameter, and the flange plate includes a cylindrical annular portion protruding in one of the thickness directions, and the annular portion is provided at the end of the protrusion on the other side. An inner protrusion having an outer diameter smaller than the outer diameter of the portion is provided, and the inner protrusion is fitted into the outer protrusion in a state where the outer periphery is in contact with the inner periphery of the outer protrusion. And the outer protrusion are connected by welding.
本考案に係る他の金属製ボビンは、円筒状の胴および前記胴の両端にそれぞれ鍔板が溶接された金属製のボビンであって、前記胴は、その両端に、前記胴の他の部分の内径よりも大きな一定の内径を有し前記他の部分との間で段を形成する外側突出部がそれぞれ設けられ、前記鍔板は、その厚さ方向の一方に突出する円筒状の環状部を備え、前記環状部は、その突出側の端部に、他の部分の外径よりも小さくかつ前記外側突出部の内径に略等しい一定の外径を有する内側突出部が設けられ、前記内側突出部が前記外側突出部に嵌め入れられて前記環状部と前記外側突出部とが溶接により連結されている。 Another metal bobbin according to the present invention is a cylindrical bobbin and a metal bobbin in which a flange is welded to both ends of the cylinder, and the cylinder is connected to both ends of the other part of the cylinder. Each of which is provided with an outer protrusion having a constant inner diameter larger than the inner diameter of the other portion and forming a step with the other portion, and the rib plate is a cylindrical annular portion protruding in one of its thickness directions The annular portion is provided with an inner protruding portion having a constant outer diameter smaller than the outer diameter of the other portion and substantially equal to the inner diameter of the outer protruding portion at the end portion on the protruding side, A protruding portion is fitted into the outer protruding portion, and the annular portion and the outer protruding portion are connected by welding.
本考案に係る他の金属製ボビンは、円筒状の胴および前記胴の両端にそれぞれ鍔板が溶接された金属製のボビンであって、前記胴は、その両端に、前記胴の他の部分の内径よりも大きな一定の内径を有し前記他の部分との間で段となって前記胴の軸方向外方側を向く係止面を形成する外側突出部がそれぞれ設けられ、前記鍔板は、その厚さ方向の一方に突出する円筒状の環状部を備え、前記環状部は、その突出側の端部に、他の部分の外径よりも小さくかつ前記外側突出部の内径に略等しい一定の外径を有しその先端面が前記係止面に面接触可能な内側突出部が設けられ、前記内側突出部が前記外側突出部に嵌め入れられて前記先端面と前記係止面とが当接した状態で前記環状部と前記外側突出部とが溶接により連結されている。 Another metal bobbin according to the present invention is a cylindrical bobbin and a metal bobbin in which a flange is welded to both ends of the cylinder, and the cylinder is connected to both ends of the other part of the cylinder. Outer projections each having a constant inner diameter that is larger than the inner diameter of the cylinder and forming a locking surface facing the axially outer side of the cylinder in a step with the other portion are provided. Is provided with a cylindrical annular portion projecting to one side in the thickness direction, and the annular portion is formed at an end of the projecting side smaller than the outer diameter of the other portion and substantially equal to the inner diameter of the outer projecting portion. An inner projecting portion having an equal and constant outer diameter, the tip surface of which can come into surface contact with the locking surface, is provided, and the inner projecting portion is fitted into the outer projecting portion, so that the tip surface and the locking surface Are in contact with each other, and the annular portion and the outer protruding portion are connected by welding.
好ましくは、前記胴が焼入れ処理されて形成され、前記鍔板が鍛造により形成されたのちに、これらが溶接により一体化されて形成される。 Preferably, the cylinder is formed by quenching, and the bar plate is formed by forging, and then these are integrated by welding.
本考案によると、伸線により大きな張力が加わっても変形の生じにくい金属製ボビンを提供することができる。 According to the present invention, it is possible to provide a metal bobbin that hardly deforms even when a large tension is applied by wire drawing.
図１は本考案に係る金属製ボビン１の正面断面図、図２は金属製ボビン１の側面図、図３は金属製ボビン１における胴２と鍔板３との接合部分の断面図である。なお、図１は図２におけるＡ−Ａ断面図である。
金属製ボビン（以下「ボビン１」という）は、胴２および鍔板３，３からなる。
図１および図３を参照して、胴２は、両端が開放された円筒の形状を有する。胴２の両端近傍には、胴２の他の部分に比べて内径が大きくそのぶん肉厚の小さな外側突出部１１，１１が形成されている。したがって、外側突出部１１と胴２におけるこれよりも内方の部分とで段が形成されている。
FIG. 1 is a front sectional view of a metal bobbin 1 according to the present invention, FIG. 2 is a side view of the metal bobbin 1, and FIG. 3 is a sectional view of a joint portion between a body 2 and a gutter plate 3 in the metal bobbin 1. . 1 is a cross-sectional view taken along line AA in FIG.
A metal bobbin (hereinafter referred to as “bobbin 1”) includes a body 2 and a saddle plate 3, 3.
Referring to FIGS. 1 and 3, the body 2 has a cylindrical shape with both ends open. In the vicinity of both ends of the body 2, outer projecting portions 11, 11 having an inner diameter larger than that of other parts of the body 2 and a smaller thickness are formed. Accordingly, a step is formed by the outer protrusion 11 and the inner portion of the body 2 than the inner protrusion.
外側突出部１１の先端の面である胴部開先面１２は、内方端縁の方が外方端縁よりも突出するように、図３に示される断面において軸方向に直交する面ＰＬに対して略２０度傾斜している。また、胴２の両端近傍には、外側突出部１１の内方端（突出するねもと）の位置に、軸方向外方を向く係止面１３が形成されている。係止面１３は、軸方向に直交する面である。
胴２は、鍔板３とは別に単独で焼入れされて製作され、焼入れにより硬度が増加する金属、例えばクロム・モリブデン鋼または炭素鋼等が使用される。
3 is a surface PL perpendicular to the axial direction in the cross section shown in FIG. 3 so that the inner edge protrudes more than the outer edge. Is inclined by approximately 20 degrees. Further, in the vicinity of both ends of the body 2, a locking surface 13 that faces outward in the axial direction is formed at the position of the inner end (the protruding thread) of the outer protrusion 11. The locking surface 13 is a surface orthogonal to the axial direction.
The body 2 is manufactured by being separately hardened separately from the plate 3, and a metal whose hardness is increased by quenching, such as chromium-molybdenum steel or carbon steel, is used.
鍔板３は、基部２１、外輪部２２、リブ２３，…，２３および環状部２４からなる。
基部２１は、全体として円盤状であり、その中心には、貫通する軸穴３１が設けられている。基部２１は、軸穴３１の周りにおける胴２の内径よりも小さな径の円で囲まれた部分が、その一方の表面側に膨らんでいる。この円形に膨らむ部分を「フランジ３２」という。フランジ３２には、軸穴３１を挟んで軸穴３１（の中心）に対して点対称となる２つのケリ穴３３，３３が設けられている。ケリ穴３３，３３は、例えば伸線を巻き取るときに駆動手段に連結されてボビン１を回転させるものである。
The saddle plate 3 includes a base portion 21, an outer ring portion 22, ribs 23,.
The base 21 has a disc shape as a whole, and a penetrating shaft hole 31 is provided at the center thereof. In the base portion 21, a portion surrounded by a circle having a diameter smaller than the inner diameter of the body 2 around the shaft hole 31 swells on one surface side. This circularly bulging portion is referred to as “flange 32”. The flange 32 is provided with two threaded holes 33, 33 that are point-symmetric with respect to (the center of) the shaft hole 31 with the shaft hole 31 interposed therebetween. The buttoned holes 33, 33 are connected to a driving means to wind the drawn wire, for example, and rotate the bobbin 1.
外輪部２２は、基部２１の周りを取り囲む肉厚となった部分である。
リブ２３は、基部２１のフランジ３２が突出する側の表面において、フランジ３２から外輪部２２に向けて径方向に伸びる凸状の帯部分である。リブ２３は、軸穴３１の中心から４５度間隔で放射状に８つ設けられている。
環状部２４は、基部２１におけるリブ２３，…，２３が設けられた側の表面とは逆側の表面にその一端が連続する、短い円筒状の部分である。環状部２４は、その外径が胴２の外径に等しく、その内径が胴２の内径よりも小さい。環状部２４の軸心は、軸穴３１の軸心に一致する。環状部２４の突出端近傍は、それよりも基部２１側の外径に比べて外径が小さくなっており、突出端近傍の外周には段が形成されている。この段を形成する突出端側の（径の小さな方の）外径は、胴２の外側突起部１１における内径に略等しい。また、この段における大小の異なる外径を有する外周をつなぐ側面３５は、径大側の端縁が径小側の端縁よりも基部２１側となるように、図３に示される断面において軸方向に直交する面ＰＬに対して略２０度傾斜している。この側面３５を「鍔板開先面３５」という。
The outer ring portion 22 is a thickened portion surrounding the base portion 21.
The rib 23 is a convex band portion extending in the radial direction from the flange 32 toward the outer ring portion 22 on the surface of the base portion 21 on the side where the flange 32 protrudes. Eight ribs 23 are provided radially from the center of the shaft hole 31 at intervals of 45 degrees.
The annular portion 24 is a short cylindrical portion whose one end is continuous with the surface opposite to the surface on the side where the ribs 23,... The outer diameter of the annular portion 24 is equal to the outer diameter of the barrel 2, and the inner diameter thereof is smaller than the inner diameter of the barrel 2. The axis of the annular portion 24 coincides with the axis of the shaft hole 31. The vicinity of the projecting end of the annular portion 24 has an outer diameter smaller than the outer diameter on the base 21 side, and a step is formed on the outer periphery near the projecting end. The outer diameter (the smaller diameter) on the protruding end side that forms this step is substantially equal to the inner diameter of the outer projection 11 of the barrel 2. Further, the side surface 35 connecting the outer circumferences having different outer diameters in this step has a shaft in the cross section shown in FIG. 3 so that the edge on the large diameter side is closer to the base 21 side than the edge on the small diameter side. It is inclined approximately 20 degrees with respect to the plane PL orthogonal to the direction. The side surface 35 is referred to as a “pan plate groove surface 35”.
環状部２４の突出端の端面は、軸方向に直交する。この端面を当接面３４といい、突出端から段までの部分を内側突出部３６という。内側突出部３６の長さ（突出長さ）は、胴２における外側突出部１１の長さ（突出長さ）に略等しい。このそれぞれの長さは、図３においてＬ１で示される。
環状部２４の突出長さＬ２（図３参照）は、基部２１のボビン１についての内方の面３７を基準とし、ボビン１においては略２１ｍｍである。また、外側突出部１１の長さＬ１は、長さＬ２の３分の１である略７ｍｍである。環状部２４の突出長さＬ２は、２０ｍｍ以上とするのが好ましい。外側突出部１１の長さＬ１は、４ｍｍ以上に形成され、６ｍｍ以上とするのが好ましい。
The end surface of the protruding end of the annular portion 24 is orthogonal to the axial direction. This end surface is referred to as a contact surface 34, and a portion from the protruding end to the step is referred to as an inner protruding portion 36. The length of the inner protrusion 36 (protrusion length) is substantially equal to the length (protrusion length) of the outer protrusion 11 in the body 2. This respective length is indicated by L1 in FIG.
The protrusion length L2 (see FIG. 3) of the annular portion 24 is approximately 21 mm in the bobbin 1 with reference to the inner surface 37 of the base portion 21 with respect to the bobbin 1. The length L1 of the outer protrusion 11 is approximately 7 mm, which is one third of the length L2. The protrusion length L2 of the annular portion 24 is preferably 20 mm or more. The length L1 of the outer protrusion 11 is 4 mm or more, preferably 6 mm or more.
環状部２４は、基部２１、フランジ３２、外輪部２２およびリブ２３，…，２３と一体に形成される。
鍔板３は、胴２と同じ材料で、例えば胴２がクロム・モリブデン鋼で製作されればクロム・モリブデン鋼で、鍛造後に焼入れを行うことにより製作される。
ボビン１は、次のようにして胴２の両端に鍔板３，３が溶接により接合されて製造される。
図３を参照して、鍔板３は、その内側突出部３６が胴２における外側突出部１１の内側に嵌め入れられる。内側突出部３６の外径と外側突出部１１の内径は略等しいので、内側突出部３６と外側突出部１１とは略密着する。また、内側突出部３６の長さと外側突出部１１の長さとは略等しいので、内側突出部３６の先端の当接面３４は、外側突出部１１の係止面１３に当接して係止される。
The annular portion 24 is formed integrally with the base portion 21, the flange 32, the outer ring portion 22, and the ribs 23,.
The gutter plate 3 is made of the same material as that of the cylinder 2. For example, if the cylinder 2 is made of chrome / molybdenum steel, it is made of chrome / molybdenum steel and is hardened after forging.
The bobbin 1 is manufactured by joining the flange plates 3 and 3 to both ends of the body 2 by welding as follows.
With reference to FIG. 3, the inner plate 36 of the gutter plate 3 is fitted inside the outer projection 11 of the body 2. Since the outer diameter of the inner protrusion 36 and the inner diameter of the outer protrusion 11 are substantially equal, the inner protrusion 36 and the outer protrusion 11 are in close contact with each other. Further, since the length of the inner protruding portion 36 and the length of the outer protruding portion 11 are substantially equal, the contact surface 34 at the tip of the inner protruding portion 36 contacts and is locked with the locking surface 13 of the outer protruding portion 11. The
外側突出部１１の胴部開先面１２および内側突出部３６の段が形成する鍔板開先面３５は、互いに異なる側に２０度傾斜している。そのため、胴２と鍔板３との嵌め合わせ部分の外周には、角度４０度で開く断面形状がＶ字状の環状の溝が形成される。この溝を開先として、胴２と鍔板３とが溶接により接合される。溶接により生じた溶着金属の余盛は、胴２の外周面および環状部２４の外周面と段差が生じないように滑らかに研磨される。
このようにして、胴２の両端に鍔板３，３が接合され、ボビン１が完成する。
The gutter plate groove surface 35 formed by the steps of the body groove surface 12 of the outer protrusion 11 and the inner protrusion 36 is inclined 20 degrees to different sides. Therefore, an annular groove having a V-shaped cross-section that opens at an angle of 40 degrees is formed on the outer periphery of the fitting portion between the body 2 and the flange plate 3. Using this groove as a groove, the body 2 and the flange plate 3 are joined by welding. The weld metal surplus produced by welding is polished smoothly so as not to cause a step difference from the outer peripheral surface of the body 2 and the outer peripheral surface of the annular portion 24.
In this way, the flange plates 3 and 3 are joined to both ends of the body 2 to complete the bobbin 1.
表１はボビン１の強度試験結果である。図４，５はボビン１に対する比較例とした金属製ボビン５の正面断面図および側面図である。図４は図５におけるＢ−Ｂ断面図である。
ここで、比較例とした金属製ボビン５（以下「ボビン５」という）について説明する。
ボビン５は、胴６、鍔板７，７および芯パイプ８からなる。
胴６は、両端が開放された円筒であり、両端面が軸方向に直交する。胴６は、ボビン１の胴２と異なり、焼入れ処理がなされていない。
鍔板７は、基部７１および補強部７２からなる。
Table 1 shows the strength test results of the bobbin 1. 4 and 5 are a front sectional view and a side view of a metal bobbin 5 as a comparative example with respect to the bobbin 1. 4 is a cross-sectional view taken along the line BB in FIG.
Here, a metal bobbin 5 (hereinafter referred to as “bobbin 5”) as a comparative example will be described.
The bobbin 5 includes a body 6, slats 7 and 7, and a core pipe 8.
The trunk | drum 6 is a cylinder by which both ends were open | released, and both end surfaces are orthogonal to an axial direction. Unlike the body 2 of the bobbin 1, the body 6 is not quenched.
The saddle plate 7 includes a base portion 71 and a reinforcing portion 72.
基部７１は、厚板がプレス加工により円形に剪断され、その円形の端縁近傍が一方の表面側に曲げ加工により丸められて外輪部７３となっている。
補強部７２は、基部７１よりも板厚の小さな板材が円形に剪断され曲げ加工されて製作される。補強部７２は、その中央部分が一方の表面側に円形に膨らむフランジ７４となっている。また、補強部７２は、フランジ７４と同じ側に膨らみ、フランジ７４近傍から外周近傍まで放射状に伸びた８つの帯状のリブ７５，…，７５を備える。補強部７２は、基部７１における外輪部７３で囲まれた中に、リブ７５，…，７５の凸側を外側にして収容され、外周が溶接により基部７１と一体化されている。鍔板７は、その中心を貫通する貫通孔を備える。
In the base 71, a thick plate is sheared into a circular shape by pressing, and the vicinity of the edge of the circular shape is rounded to one surface side by bending to form an outer ring portion 73.
The reinforcing portion 72 is manufactured by shearing and bending a plate material having a thickness smaller than that of the base portion 71 into a circular shape. The reinforcing portion 72 is a flange 74 whose central portion swells circularly on one surface side. The reinforcing portion 72 is provided with eight strip-shaped ribs 75,..., 75 that swell on the same side as the flange 74 and extend radially from the vicinity of the flange 74 to the vicinity of the outer periphery. The reinforcing portion 72 is accommodated in the base 71 surrounded by the outer ring portion 73 with the convex side of the ribs 75,... 75 outside, and the outer periphery is integrated with the base 71 by welding. The saddle plate 7 includes a through hole penetrating the center.
鍔板７，７は、貫通孔の中心と胴６の軸心とを一致させて溶接により胴６の両端に接合されている。
芯パイプ８は、一方の鍔板７の貫通孔、胴６の中心および他方の鍔板７の貫通孔に挿入され、鍔板７，７に溶接によって一体化されている。
実施例および比較例におけるそれぞれのボビン１，５は、寸法および重量を略同一である。
強度試験は、太さ（径）０．１３ｍｍのピアノ線ＰＷに所定の張力（４００ｇｆまたは１ｋｇｆ）を加えた状態で長さ７１３ｋｍをボビン１，５に巻き取り、ボビン１，５の巻き取り前後の変形の程度およびピアノ線ＰＷを取り除いた後の変形の程度を測定した。
The saddle plates 7 and 7 are joined to both ends of the cylinder 6 by welding with the center of the through hole and the axis of the cylinder 6 aligned.
The core pipe 8 is inserted into the through hole of one of the flange plates 7, the center of the body 6 and the through hole of the other flange plate 7, and is integrated with the flange plates 7 and 7 by welding.
The bobbins 1 and 5 in the examples and comparative examples are substantially the same in size and weight.
In the strength test, a length of 713 km was wound around bobbins 1 and 5 with a predetermined tension (400 gf or 1 kgf) applied to piano wire PW having a thickness (diameter) of 0.13 mm, and before and after winding of bobbins 1 and 5 The degree of deformation and the degree of deformation after removing the piano wire PW were measured.
ボビン１，５の変形の程度は、円形である鍔板３，７の外周の反りの大きさＤ（図３参照、表１における「鍔板端変化量」）で代表した。
表１に示されるように、ボビン１（実施例）はボビン５（比較例）に比べて、ピアノ線ＰＷの張力が４００ｇｆの場合、変形の程度が小さかった。また、ピアノ線ＰＷの張力が１ｋｇｆの場合では、ボビン５が胴６と鍔板７との溶接部分で破損したのに対し、ボビン１では溶接部分が破損することなく変形するにとどまった。
このように、ボビン１がボビン５に比べて高い強度が得られたのは、
（１） 鍔板３，３が鍛造により製造され、かつ一体化される前に胴２および鍔板３，３に焼入れ処理が行われたこと、
（２） 所定の突出長さＬ２を有する環状部２４が鍔板３に設けられて胴２が環状部２４に接合されたこと、
（３） 胴２の端に外側突出部１１、および環状部２４の突出端に内側突出部３６が設けられ、外側突出部１１の内側に内側突出部３６が嵌め入れられて胴２と鍔板３とが接合（溶接）されたこと
による。
The degree of deformation of the bobbins 1 and 5 was represented by the magnitude D of the warpage of the outer periphery of the circular plate 3 and 7 (see FIG. 3, “plate plate end change” in Table 1).
As shown in Table 1, when the tension of the piano wire PW was 400 gf, the degree of deformation of the bobbin 1 (Example) was smaller than that of the bobbin 5 (Comparative Example). Further, when the tension of the piano wire PW was 1 kgf, the bobbin 5 was damaged at the welded portion between the trunk 6 and the gutter plate 7, whereas the bobbin 1 was only deformed without being damaged.
Thus, the high strength of the bobbin 1 compared to the bobbin 5 was obtained.
(1) The casing 2 and the casings 3 and 3 were quenched before the casings 3 and 3 were manufactured by forging and integrated,
(2) An annular portion 24 having a predetermined protruding length L2 is provided on the base plate 3, and the body 2 is joined to the annular portion 24.
(3) The outer projecting portion 11 is provided at the end of the body 2, and the inner projecting portion 36 is provided at the projecting end of the annular portion 24, and the inner projecting portion 36 is fitted inside the outer projecting portion 11. 3 is joined (welded).
上述の実施形態において、胴２の係止面３４および鍔板３の当接面３４は、軸方向に直交する面でなくとも、外側突出部１１に内側突出部３６が嵌め入れられたときにこれらが略面全体で当接すれば円錐台の周面状であってもよい。
また、外側突出部１１の内面が開口端に向かうに伴い内径が大きくなるテーパ状に形成し、内側突出部３６の外面が、外側突出部１１の内面と同じ傾斜角度の母線を有するテーパー状に形成して、外側突出部１１に内側突出部３６を嵌め入れたときに、外側突出部１１の内面と内側突出部３６外面とが密着するように構成してもよい。
In the above-described embodiment, the locking surface 34 of the body 2 and the contact surface 34 of the flange plate 3 are not surfaces orthogonal to the axial direction, but when the inner protruding portion 36 is fitted into the outer protruding portion 11. If these are substantially in contact with the entire surface, it may be in the shape of a circular truncated cone.
Further, the inner surface of the outer protruding portion 11 is tapered so that the inner diameter increases as it goes to the opening end, and the outer surface of the inner protruding portion 36 has a tapered shape having a generatrix with the same inclination angle as the inner surface of the outer protruding portion 11. When the inner protrusion 36 is inserted into the outer protrusion 11, the inner surface of the outer protrusion 11 and the outer surface of the inner protrusion 36 may be in close contact with each other.
その他、ボビン１、およびボビン１の各構成または全体の構造、形状、寸法、個数、材質などは、本考案の趣旨に沿って適宜変更することができる。 In addition, the configuration of the bobbin 1 and the bobbin 1 or the entire structure, shape, dimensions, number, material, and the like can be appropriately changed in accordance with the spirit of the present invention.
本考案は、金属線材を巻き取る金属製のボビンに利用することができる。 The present invention can be used for a metal bobbin that winds up a metal wire.
１ 金属製ボビン（ボビン）
２ 胴
３ 鍔板
１１ 外側突出部
１３ 係止面
２４ 環状部
３４ 先端面（当接面）
３６ 内側突出部
1 Metal bobbin (bobbin)
2 body 3 slat 11 outer protrusion 13 locking surface 24 annular portion 34 tip surface (contact surface)
36 Inner protrusion
Claims (4)
前記胴は、その両端に前記胴の他の部分の内径よりも大きな内径を有する外側突出部がそれぞれ設けられ、
前記鍔板は、その厚さ方向の一方に突出する円筒状の環状部を備え、
前記環状部は、その突出側の端部に、他の部分の外径よりも小さな外径を有する内側突出部が設けられ、
前記内側突出部がその外周を前記外側突出部の内周に接した状態で前記外側突出部に嵌め入れられて前記環状部と前記外側突出部とが溶接により連結された
ことを特徴とする金属製ボビン。 A cylindrical bobbin and a metal bobbin in which saddle plates are welded to both ends of the cylinder,
The cylinder is provided with outer protrusions having inner diameters larger than the inner diameter of other parts of the cylinder at both ends,
The saddle plate includes a cylindrical annular portion protruding in one of its thickness directions,
The annular portion is provided with an inner protruding portion having an outer diameter smaller than the outer diameter of the other portion at an end portion on the protruding side thereof,
The metal is characterized in that the inner projecting portion is fitted into the outer projecting portion with its outer periphery contacting the inner periphery of the outer projecting portion, and the annular portion and the outer projecting portion are connected by welding. Made bobbin.
前記胴は、その両端に、前記胴の他の部分の内径よりも大きな一定の内径を有し前記他の部分との間で段を形成する外側突出部がそれぞれ設けられ、
前記鍔板は、その厚さ方向の一方に突出する円筒状の環状部を備え、
前記環状部は、その突出側の端部に、他の部分の外径よりも小さくかつ前記外側突出部の内径に略等しい一定の外径を有する内側突出部が設けられ、
前記内側突出部が前記外側突出部に嵌め入れられて前記環状部と前記外側突出部とが溶接により連結された
ことを特徴とする金属製ボビン。 A cylindrical bobbin and a metal bobbin in which saddle plates are welded to both ends of the cylinder,
The cylinder is provided with outer protrusions at both ends, each of which has a constant inner diameter larger than the inner diameter of the other part of the cylinder and forms a step with the other part,
The saddle plate includes a cylindrical annular portion protruding in one of its thickness directions,
The annular portion is provided with an inner protruding portion having a constant outer diameter that is smaller than the outer diameter of the other portion and substantially equal to the inner diameter of the outer protruding portion at an end of the protruding side.
The metal bobbin characterized in that the inner protrusion is fitted into the outer protrusion and the annular portion and the outer protrusion are connected by welding.
前記胴は、その両端に、前記胴の他の部分の内径よりも大きな一定の内径を有し前記他の部分との間で段となって前記胴の軸方向外方側を向く係止面を形成する外側突出部がそれぞれ設けられ、
前記鍔板は、その厚さ方向の一方に突出する円筒状の環状部を備え、
前記環状部は、その突出側の端部に、他の部分の外径よりも小さくかつ前記外側突出部の内径に略等しい一定の外径を有しその先端面が前記係止面に面接触可能な内側突出部が設けられ、
前記内側突出部が前記外側突出部に嵌め入れられて前記先端面と前記係止面とが当接した状態で前記環状部と前記外側突出部とが溶接により連結された
ことを特徴とする金属製ボビン。 A cylindrical bobbin and a metal bobbin in which saddle plates are welded to both ends of the cylinder,
The cylinder has a fixed inner diameter larger than the inner diameter of the other part of the cylinder at both ends thereof, and is a locking surface facing the axially outer side of the cylinder as a step with the other part. Each of the outer protrusions forming the
The saddle plate includes a cylindrical annular portion protruding in one of its thickness directions,
The annular portion has a constant outer diameter that is smaller than the outer diameter of the other portion and substantially equal to the inner diameter of the outer protruding portion at the end of the protruding side, and the tip surface of the annular portion is in surface contact with the locking surface. Possible inner protrusions,
The metal is characterized in that the inner projecting portion is fitted into the outer projecting portion, and the annular portion and the outer projecting portion are connected by welding in a state where the tip surface and the locking surface are in contact with each other. Made bobbin.
請求項１ないし請求項３のずれか１項に記載の金属製ボビン。 The metal bobbin according to any one of claims 1 to 3, wherein the cylinder is formed by quenching and the rib plate is formed by forging and then integrated by welding.
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