JP5887211B2 - Method for manufacturing shock absorber attachment - Google Patents

Method for manufacturing shock absorber attachment Download PDF

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JP5887211B2
JP5887211B2 JP2012118966A JP2012118966A JP5887211B2 JP 5887211 B2 JP5887211 B2 JP 5887211B2 JP 2012118966 A JP2012118966 A JP 2012118966A JP 2012118966 A JP2012118966 A JP 2012118966A JP 5887211 B2 JP5887211 B2 JP 5887211B2
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shock absorber
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fixture
bush
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JP2013245735A (en
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吉田　耕二郎
耕二郎 吉田
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Showa Corp
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Showa Corp
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本発明は、緩衝器の取付具の製造方法に関し、特に、車輪が取り付けられる車軸側と車体側との間に緩衝器を取り付けるときの取付具の製造方法に関する。 The present invention relates to a shock absorber mounting method , and more particularly to a mounting method for mounting a shock absorber between an axle side to which a wheel is mounted and a vehicle body side.

従来、二輪車における後輪側の緩衝器は、車体と、後輪を支持する車軸側部材との間に介在させることで、路面の凹凸により後輪に入力される振動を車体に伝達しないように吸収させている。
この緩衝器は、車体側の取付部及び車軸側の取付部においてブッシュと呼ばれる緩衝材を介して車体と車軸側部材とに連結される。ブッシュは、ゴム製のものや球面軸受等が用いられ、緩衝器の作動時の相対的な動作の支点となる。ブッシュは、車体側取付部との取り付けには緩衝器側に設けられ、車軸側取付部との取り付けには車軸側取付部もしくは緩衝器側に設けられる。
例えば、車軸側取付部にブッシュが設けられる場合には、コ字状の取付具が緩衝器に固着され、取付具によりブッシュを左右から挟み込み、ブッシュと取付具に形成された取付孔にボルトを貫通させることで共締めして固定される。このような、コ字状の取付具は、特許文献１に記載のようにプレス成型により一枚の板材を折り曲げることで、基部と一対の折曲片からなるコ字状に成型される。一対の折曲片は、ブッシュの幅に対応する寸法で離間するように略平行に成型される。一方の折曲片と他方の折曲片とには、同軸上で貫通するボルト貫通孔が形成される。
また、緩衝器にブッシュが設けられる場合には、特許文献２に示すように、あらかじめ丸型のブッシュ配設孔を備えた取付部を鋳造により成型し、製品としての外観上の美観を向上させるための仕上げや、挿入されるブッシュの寸法に応じた嵌め合いが得られるようにブッシュ配設孔の内周面の仕上げ加工が行われている。 Conventionally, a shock absorber on the rear wheel side in a two-wheeled vehicle is interposed between the vehicle body and an axle side member that supports the rear wheel so that vibrations input to the rear wheel due to road surface unevenness are not transmitted to the vehicle body. It is absorbed.
The shock absorber is connected to the vehicle body and the axle side member via a cushioning material called a bush at the mounting portion on the vehicle body side and the mounting portion on the axle side. The bush is made of rubber or a spherical bearing, and serves as a fulcrum for relative operation when the shock absorber is activated. The bush is provided on the shock absorber side for attachment to the vehicle body side attachment portion, and is provided on the axle side attachment portion or the shock absorber side for attachment to the axle side attachment portion.
For example, when a bush is provided on the axle side mounting part, a U-shaped mounting tool is fixed to the shock absorber, the bush is sandwiched from the left and right by the mounting tool, and a bolt is installed in the mounting hole formed in the bush and the mounting tool. It is fixed by tightening by penetrating. Such a U-shaped fixture is formed into a U-shape consisting of a base and a pair of bent pieces by bending a single plate material by press molding as described in Patent Document 1. The pair of bent pieces are molded substantially in parallel so as to be separated by a dimension corresponding to the width of the bush. A bolt through-hole penetrating on the same axis is formed in one bent piece and the other bent piece.
In addition, when the shock absorber is provided with a bush, as shown in Patent Document 2, a mounting portion provided with a round bush arrangement hole in advance is molded by casting to improve the appearance of the product. For this purpose, finishing of the inner peripheral surface of the bushing hole is performed so that fitting according to the size of the bush to be inserted can be obtained.

実公昭６２−３６９９５号公報Japanese Utility Model Publication No. 62-36995 実開昭６１−６７２９２号公報Japanese Utility Model Publication No. 61-67292

しかしながら、特許文献１のプレス加工による取付具を採用する場合には、容易に加工成型することができるが、特許文献２に示すような鋳造により成型された取付部を採用した場合には、プレス加工により成型されるコ字状の取付部に比べて製造コストがかかるとともに、大型化しやすく重量が重くなってしまう。また、鋳造による素材の量を減らして取付部の重量を軽くすることも考えられるが、この場合、強度がプレス加工により成型されたものよりも不足し、取付部としての信頼性を低下させてしまう虞がある。   However, when the fixture by press working of Patent Document 1 is employed, it can be easily processed and molded. However, when the mounting portion molded by casting as shown in Patent Document 2 is employed, the press The manufacturing cost is higher than that of a U-shaped mounting portion molded by processing, and the size is easily increased and the weight is increased. It is also possible to reduce the weight of the mounting part by reducing the amount of raw material by casting, but in this case, the strength is insufficient compared to that molded by pressing, reducing the reliability as the mounting part. There is a risk of it.

本発明は、こうした問題に鑑みてなされたものであり、緩衝器側にブッシュが配設される取付具であって、この取付具を軽量化とともに強度を向上させる緩衝器の取付具の製造方法を提供することを目的とする。 The present invention has been made in view of these problems, and is a fixture in which a bush is disposed on the shock absorber side, and a method of manufacturing a shock absorber attachment that reduces the weight and improves the strength of the fixture . The purpose is to provide.

上記課題を解決するための緩衝器の取付具の製造方法の態様として、一枚の帯板をプレス加工することで成型される緩衝器の取付具の製造方法であって、緩衝器と結合する固定部を形成する工程と、固定部の両側から互いに平行に延長する一対の片部を形成する工程と、片部のそれぞれの先端側に、板厚方向に貫通して互いに対向するブッシュ結合孔を形成する工程とを含み、一対の片部を形成する際に、それぞれの片部のブッシュ結合孔側を接触させるので、鋳造成型よりも小型、軽量及び低コスト化が図れ、しかも１つの片部の先端側が互いに接触状態に保持されるので、片部同士の近接方向の耐力が大きくなり、機械的な強度を向上できる。
また、上記取付具の製造方法の他の態様として、一対の片部に、外側方向に突出してブッシュ結合孔を有する円筒部を形成し、当該円筒部の基端側を接触させるので、この接触状態をより安定に保つことができ、一対の片部同士の近接方向の耐力をより向上でき、機械的強度をより向上できる。
また、上記取付具の製造方法の他の態様として、一対の片部に、内側方向に突出してブッシュ結合孔を有する円筒部を形成し、当該円筒部の先端を接触させるので、一対の片部同士を間接的に接触させることができ、この場合各円筒部の高さの分だけ一対の片部の接触方向の傾斜角を小さくできるため、各辺部をより直線に近い状態に保つことができるので、より強度を向上できる。
また、上記取付具の製造方法の他の態様として、固定部と円筒部側との間に補強部を形成するので、両者間の座屈強度を向上でき、長寿命化が図れる。
また、上記取付具の製造方法の他の態様として、補強部を、一対の片部を板厚方向に膨出変形させて形成するので、より簡単な構造でさらなる強度の向上が図れる。
また、上記取付具の製造方法の他の態様として、補強部を、一対の片部の幅方向の両縁部を折曲させて形成するので、より機械的強度を向上できる。
また、上記取付具の製造方法の他の態様として、固定部に、緩衝器との結合部の周りに緩衝器のスプリングの端部が配置されるスプリングシート部を形成するため、より安定してスプリングの着座端部を支持できるので、スプリングの脱落が発生せず、信頼性を向上できる。
また、上記取付具の製造方法の他の態様として、請求項１乃至請求項７いずれか記載の緩衝器の取付具を、車輪側又は車体側に取りつけ可能とするので、汎用性を増すことができる。

As an aspect of a method for manufacturing a shock absorber attachment for solving the above-described problem, a shock absorber attachment manufacturing method for forming a shock absorber molded by pressing a single strip is combined with the shock absorber. A step of forming the fixing portion , a step of forming a pair of pieces extending in parallel with each other from both sides of the fixing portion, and a bush coupling hole that penetrates in the thickness direction and faces each other at the tip side of each piece Forming a pair of pieces, the bush coupling hole side of each piece is brought into contact with each other, so that the size, weight and cost can be reduced as compared with casting, and one piece Since the tip ends of the parts are held in contact with each other, the proof stress in the proximity direction between the pieces is increased, and the mechanical strength can be improved.
Moreover, as another aspect of the manufacturing method of the mounting tool, a cylindrical portion having a bush coupling hole protruding outward is formed on a pair of one portion , and the proximal end side of the cylindrical portion is brought into contact with each other. The state can be kept more stable, the yield strength in the proximity direction between the pair of pieces can be further improved, and the mechanical strength can be further improved.
Moreover, as another aspect of the manufacturing method of the mounting tool, a pair of pieces is formed in a pair of pieces so that a cylindrical portion protruding inwardly and having a bush coupling hole is formed and the tips of the cylinders are brought into contact with each other. Can contact each other indirectly, and in this case, the inclination angle of the contact direction of the pair of one part can be reduced by the height of each cylindrical part, so that each side can be kept in a state closer to a straight line. Since it can, strength can be improved more.
Moreover, since the reinforcement part is formed between the fixing | fixed part and the cylindrical part side as another aspect of the manufacturing method of the said fixture, the buckling strength between both can be improved and lifetime can be achieved.
Further, as another aspect of the method for manufacturing the fixture, the reinforcing portion is formed by bulging and deforming the pair of pieces in the plate thickness direction, so that the strength can be further improved with a simpler structure.
Moreover, since the reinforcement part is formed by bending both the edge parts of the width direction of a pair of piece part as another aspect of the manufacturing method of the said fixture, mechanical strength can be improved more.
Moreover, as another aspect of the manufacturing method of the fixture, a spring seat portion in which the end portion of the spring of the shock absorber is arranged around the joint portion with the shock absorber is formed in the fixing portion, so that the mounting portion is more stable. Since the seating end of the spring can be supported, the spring does not fall off and the reliability can be improved.
Also, as another embodiment of the production method of the fixture, the fixture of the shock absorber according to any one of claims 1 to 7, since it can be mounted on the wheel side or the vehicle body, to increase the versatility Can do.

実施形態に係る緩衝器の概略図及び取付具の外観斜視図である。It is the schematic of the buffer which concerns on embodiment, and the external appearance perspective view of a fixture. 加工後の取付具の三面図である。It is a three-view figure of the fixture after a process. 取付具の加工前の取付具素材の平面図及び側面図である。It is the top view and side view of a fixture raw material before a processing of a fixture. バーリング加工が施された取付素材の平面図及び側面図である。It is the top view and side view of the attachment raw material which burring-processed. 取付具の他の形態を示す図である。It is a figure which shows the other form of a fixture. 取付具の他の形態を示す図である。It is a figure which shows the other form of a fixture. 取付具の他の形態の平面図及び側面図である。It is the top view and side view of another form of a fixture.

以下、発明の実施形態を通じて本発明を詳説するが、以下の実施形態は特許請求の範囲に係る発明を限定するものではなく、また実施形態の中で説明される特徴の組み合わせのすべてが発明の解決手段に必須であるとは限らず、選択的に採用される構成を含むものである。   Hereinafter, the present invention will be described in detail through embodiments of the invention. However, the following embodiments do not limit the invention according to the claims, and all combinations of features described in the embodiments are included in the invention. It is not necessarily essential to the solution, but includes a configuration that is selectively adopted.

図１乃至図４は、本発明に係る緩衝器の取付具の実施の形態を示す図である。本発明に係る取付具２が適用される緩衝器１は、図１（ａ）に示すように、スプリング３とダンパー４とを備えるサスペンションユニットである。スプリング３は、コイルスプリングであって、ダンパー４の外周を包囲するように、取り付けられる。   1 to 4 are views showing an embodiment of a shock absorber attachment according to the present invention. The shock absorber 1 to which the fixture 2 according to the present invention is applied is a suspension unit including a spring 3 and a damper 4 as shown in FIG. The spring 3 is a coil spring and is attached so as to surround the outer periphery of the damper 4.

ダンパー４は、ダンパーチューブ５よりなり、このダンパーチューブ５内には作動油が封入されており、さらに、ダンパーチューブ５の内部に減衰力発生機構付きのピストンを摺動自在に挿入し、そのピストンが結合されたピストンロッド６をダンパーチューブ５の一端から突出させ、この突出部分のネジ部６Ａに、本発明に係る車軸側取付部材としての取付具２が取り付けられる。ダンパーチューブ５の他端側にスプリング３の端部側が着座する円板状のスプリングシート７が設けられ、さらにこのスプリングシート７より先端に車体側取付部としてのジョイント８が設けられる。   The damper 4 comprises a damper tube 5, and hydraulic oil is sealed in the damper tube 5, and a piston with a damping force generation mechanism is slidably inserted into the damper tube 5, and the piston The piston rod 6 to which is coupled is projected from one end of the damper tube 5, and the fixture 2 as the axle-side mounting member according to the present invention is attached to the threaded portion 6A of the projected portion. A disc-shaped spring seat 7 on which the end portion side of the spring 3 is seated is provided on the other end side of the damper tube 5, and a joint 8 as a vehicle body side attachment portion is provided at the tip of the spring seat 7.

緩衝器の取付具２は、図１，図２に示すように、図３，図４の帯板４０をプレス成型してなり、固定部２５を有する。この固定部２５は、ネジ部６Ａをネジ止めするロッド結合孔２０と、このロッド結合孔２０が形成された基片２５ｍと、上記ロッド結合孔２０を中心に、上記基片２５ｍの４辺から十字状に突出する広幅片２１，２２及び細幅片２３，２４とより形成される。   As shown in FIGS. 1 and 2, the shock absorber attachment 2 is formed by press-molding the band plate 40 of FIGS. 3 and 4 and has a fixing portion 25. The fixing portion 25 includes a rod coupling hole 20 for screwing the screw portion 6A, a base piece 25m in which the rod coupling hole 20 is formed, and four sides of the base piece 25m with the rod coupling hole 20 as a center. The wide pieces 21 and 22 and the narrow pieces 23 and 24 projecting in a cross shape are formed.

上記細幅片２３，２４は第１突片を、上記広幅片２１，２２は第２突片を形成する。上記固定部２５の細幅片２３，２４が形成された側の残りの側部は、湾曲部２６を介して下方に直角に折曲された一対の支持片２７，２８と、各支持片２７，２８の一端より延長しつつ一端が互いに近接するように傾斜する傾斜片２９，３０と、上記傾斜片２９，傾斜片３０の一端の接触位置より互いに対接しつつ延長する対向片３１，３２と、各対向片３１，３２の下端側に形成され、かつ互いに対向するブッシュ結合孔９，９とを有する円筒部３５，３６とよりなる。対向片３１，３２は、対接し（互いに対向して接する）、対接部位がロッド結合孔２０の中心軸に一致する。
上記支持片２７，２８と、傾斜片２９，３０と、対向片３１，３２とで一対の片部４１，４２が形成される。 The narrow pieces 23 and 24 form a first protruding piece, and the wide pieces 21 and 22 form a second protruding piece. The remaining side portion of the fixing portion 25 on the side where the narrow-width pieces 23 and 24 are formed is a pair of support pieces 27 and 28 bent at a right angle downward via a bending portion 26, and each support piece 27. , 28 extending from one end of each of the inclined pieces 29, 28 and being inclined so that the one ends are close to each other, and opposed pieces 31, 32 extending from the contact positions of the inclined pieces 29, one end of the inclined piece 30 while facing each other. And cylindrical portions 35 and 36 having bush coupling holes 9 and 9 that are formed on the lower end sides of the opposing pieces 31 and 32 and are opposed to each other. The opposing pieces 31 and 32 are in contact with each other (in contact with each other), and the contact portion coincides with the central axis of the rod coupling hole 20.
The support pieces 27, 28, the inclined pieces 29, 30 and the opposing pieces 31, 32 form a pair of pieces 41, 42.

上記ロッド結合孔２０は、周縁の下端側に円筒部３９として突出し、円筒部３９の内周がねじ切り形成される。ロッド結合孔２０に螺入されたピストンロッド６のネジ部６Ａは、ネジ部６Ａに予め螺着されるロッド結合孔２０の上面に位置するナット３３でしっかりとロッド結合孔２０にねじ止めされる。上記十字状パターンの広幅片２１，２２及び細幅片２３，２４を有する基片２５ｍの上面がスプリングシート部となっており、この部分にスプリング３の下端が、ナット３３を囲むように止着される。   The rod coupling hole 20 projects as a cylindrical portion 39 on the lower end side of the peripheral edge, and the inner periphery of the cylindrical portion 39 is threaded. The threaded portion 6A of the piston rod 6 screwed into the rod coupling hole 20 is firmly screwed to the rod coupling hole 20 with a nut 33 located on the upper surface of the rod coupling hole 20 that is screwed into the threaded portion 6A in advance. . The upper surface of the base piece 25m having the cross-shaped wide pieces 21 and 22 and the narrow pieces 23 and 24 is a spring seat portion, and the lower end of the spring 3 is fixed to this portion so as to surround the nut 33. Is done.

上記傾斜片２９，３０及び対向片３１，３２には、幅方向中央側に補強部としてのリブ３４，３４が、板厚外方に膨出することで形成されて、対向片３１，３２と傾斜片２９，３０との間の強度を高めることで取付具２全体の強度を増加させて、緩衝器１に適用した場合の取付具２自体の信頼性を高めることができる。なお、リブ３４，３４は、板厚内側方向に膨出するように形成しても良い（二点鎖線参照）。なお、この内側に膨出するリブについては、対向片３１，３２が対接（接触）しているので、支持片２７，２８と、傾斜片２９，３０との間に亘って形成して、両者間の強度を高めるものである。対向片３１，対向片３２同士の接触により、対向片３１，３２の近接方向の耐力を向上でき、機械的強度を増すことができる。なお、対向片３１と対向片３２とは、互いに溶接により接合することで、互いに離間不能として強度をさらに高めても良い。   The inclined pieces 29 and 30 and the opposing pieces 31 and 32 are formed with ribs 34 and 34 as reinforcing portions on the center side in the width direction so as to bulge outward from the plate thickness. By increasing the strength between the inclined pieces 29 and 30, the strength of the entire fixture 2 can be increased, and the reliability of the fixture 2 itself when applied to the shock absorber 1 can be increased. The ribs 34, 34 may be formed so as to bulge in the plate thickness inner direction (see the two-dot chain line). In addition, about the rib bulging inside, since the opposing pieces 31 and 32 are in contact (contact), they are formed between the support pieces 27 and 28 and the inclined pieces 29 and 30, It increases the strength between them. By the contact between the facing pieces 31 and 32, the proof stress in the proximity direction of the facing pieces 31 and 32 can be improved, and the mechanical strength can be increased. Note that the opposing piece 31 and the opposing piece 32 may be separated from each other by welding to further increase the strength.

対向片３１，３２の下部は、円形の幅広部３７，３８となっており、この部分のブッシュ結合孔９，９のそれぞれの中心軸が水平向きで一致し、外周縁には、外方に突出する円筒部３５，３６が設けられる。対向片３１，３２とが互いに接触することにより、当該対向片３１，３２に形成された円筒部３５，３６の基端側同士が互いに接触することで、円筒部３５のブッシュ結合孔９と、円筒部３６のブッシュ結合孔９の各中心軸は、同軸となり、かつロッド結合孔２０の中心軸に対して直交する。これ等、ブッシュ結合孔９，９に対して図外のブッシュを圧入して取り付けることができる。   The lower portions of the facing pieces 31 and 32 are circular wide portions 37 and 38, and the central axes of the bush coupling holes 9 and 9 of this portion are aligned in the horizontal direction, and the outer peripheral edge is outward. Projecting cylindrical portions 35 and 36 are provided. When the opposing pieces 31 and 32 are in contact with each other, the base ends of the cylindrical portions 35 and 36 formed in the opposing pieces 31 and 32 are in contact with each other, so that the bush coupling hole 9 of the cylindrical portion 35 and Each central axis of the bush coupling hole 9 of the cylindrical portion 36 is coaxial and is orthogonal to the central axis of the rod coupling hole 20. These bushes (not shown) can be press-fitted and attached to the bush coupling holes 9 and 9.

ここで、上記基片２５ｍは、幅方向に延長する長辺形となり、短辺側から上記広幅片２１，２２が水平に突出し、長辺側から細幅片２３，２４が突出し、この広幅片２１，２２及び細幅片２３，２４によりスプリング３のスプリングシート部の面積が十分な広さに設定され、スプリング３の下端を安定的に支持できる。基片２５ｍの長辺側の細幅片２３，２４を除く両端より、湾曲部２６を介して直角に折曲される支持片２７，２８は、ほぼＵ字状となって、互いに対向して対向空間ｍが形成され、この対向空間ｍは、傾斜片２９，３０間で形成される三角形状の空間ｎと一体化し、両空間ｍ，ｎによりネジ部６Ａを収容するための空間が形成され、ネジ部６Ａが多少長い場合でも十分に収容できるように設定される。ブッシュ結合孔９，９の全長も、円筒部３５，３６の高さの設定により図外のブッシュを圧入するための十分な長さに設定される。   Here, the base piece 25m has a long side extending in the width direction, the wide pieces 21 and 22 project horizontally from the short side, and the narrow pieces 23 and 24 project from the long side. The area of the spring seat portion of the spring 3 is set to a sufficient width by the 21 and 22 and the narrow pieces 23 and 24, and the lower end of the spring 3 can be stably supported. The support pieces 27 and 28 bent at a right angle through the curved portion 26 from both ends excluding the narrow pieces 23 and 24 on the long side of the base piece 25m are substantially U-shaped and face each other. An opposing space m is formed, and this opposing space m is integrated with a triangular space n formed between the inclined pieces 29 and 30, and a space for accommodating the screw portion 6A is formed by both the spaces m and n. The screw portion 6A is set so as to be sufficiently accommodated even when it is somewhat long. The total length of the bush coupling holes 9, 9 is also set to a sufficient length for press-fitting a bush (not shown) by setting the height of the cylindrical portions 35, 36.

以上の構成の取付具２の製造方法について図１乃至図４を用いて説明する。
前加工処理；
取付具２は、図３（ａ），（ｂ）に示すように、前加工処理で、所定長さで、かつ所定幅の一枚の板よりなる帯板４０を加工して形成される。この帯板４０は、中央に長方形の基片２５ｍを有し、基片２５ｍは、帯板４０の幅方向に延長し、この基片２５ｍの中心に小円孔２０ａが形成され、この小円孔２０ａに開口端側が対向し、かつ基片２５ｍの長辺側に連接するコ字状及び逆コ字状の切断線Ａ，Ｂと、上記切断線Ａ，Ｂの開口端を通るとともに幅方向に延長し、基片２５ｍの長辺側に相当する折曲線Ｃ，Ｄと、上記折曲線Ｃ，Ｄより帯板４０の両端方向に一定距離離間した位置で、かつ、幅方向に延長する折曲線Ｅ，Ｅと、この折曲線Ｅ，Ｅよりさらに帯板４０の端部方向に一定距離離間した位置で、かつ幅方向に延長する折曲線Ｇ，Ｇと、両側の上記折曲線Ｅ，Ｅより折曲線Ｇ，Ｇを経由して、帯板４０の両端方向に延長する細幅のリブ形成予定部Ｉ，Ｉと、帯板４０の両端に形成され、幅方向中心に位置する小円孔９ａ，９ａを同心状に囲むように外縁が円形に成型された幅広部３７，３８とから形成する。なお、各折曲線は、設計上の仮想線を意味し、切断線Ａ，Ｂは、板厚方向に切断される部分を示す。
上記帯板４０の長さ方向の中心に長くなった基片２５ｍが位置し、この基片２５ｍのほぼ両短辺側からは外方に一定幅の広幅片２１，２２が突出し、上記折曲線Ｃ，Ｄは、この広幅片２１，２２の両側よりもやや帯板４０の端部寄りに位置する。この場合、広幅片２１，２２の先端縁は、湾曲しており、この湾曲線は、小円孔２０ａの中心軸を中心とする円形状に合致する。 A method for manufacturing the fixture 2 having the above configuration will be described with reference to FIGS.
Pre-processing treatment;
As shown in FIGS. 3A and 3B, the fixture 2 is formed by processing a strip 40 made of a single plate having a predetermined length and a predetermined width in a pre-processing process. The band plate 40 has a rectangular base piece 25m at the center. The base piece 25m extends in the width direction of the band plate 40, and a small circular hole 20a is formed at the center of the base piece 25m. The U-shaped and reverse U-shaped cutting lines A and B facing the hole 20a and connected to the long side of the base piece 25m, and passing through the opening ends of the cutting lines A and B and in the width direction The folding lines C and D corresponding to the long side of the base piece 25m, and the folding lines C and D that extend in the width direction at positions spaced apart from the folding lines C and D by a certain distance in the both end directions. Curves E, E, folding lines G, G extending in the width direction at positions spaced apart from the folding lines E, E by a certain distance in the end direction of the strip 40, and the folding lines E, E on both sides Further, narrow rib formation scheduled portions I and I extending in the direction of both ends of the strip 40 via the folding lines G and G, and both ends of the strip 40 Is formed, the small circular holes 9a, the outer edge so as to surround the 9a concentrically formed from the wide portions 37 and 38 Metropolitan which is molded in a circular positioned in the width direction center. In addition, each folding line means the virtual line on a design, and the cutting lines A and B show the part cut | disconnected in a plate | board thickness direction.
A long base piece 25m is located at the center of the band plate 40 in the length direction, and wide pieces 21 and 22 having a constant width project outward from substantially both short sides of the base piece 25m. C and D are located slightly closer to the end of the band plate 40 than both sides of the wide pieces 21 and 22. In this case, the leading edges of the wide pieces 21 and 22 are curved, and this curved line matches a circular shape centered on the central axis of the small circular hole 20a.

中間加工処理；
以上の帯状の帯板４０において、中間加工では、図４（ａ），（ｂ）に示すように、バーリング加工処理により、小円孔２０ａの周囲を帯板４０の内側方向に同心円状に突出させて、ロッド結合孔２０を有する円筒部３９を形成する。このとき、円筒部３９の内周孔は、ねじ切りしても良く、この孔がロッド結合孔２０として用いられる。また、両端側の小円孔９ａ，９ａについてもバーリング加工処理によりその周囲を帯板４０の外側方向に同心円状に突出させることで、ブッシュ結合孔９，９を有する円筒部３５，３６を形成する。円筒部３５，３６のブッシュ結合孔９，９は、本例では、ストレートな貫通孔として形成され、ブッシュを圧入して結合される。但し、ブッシュ結合孔９，９は、必要に応じてねじ切りしてねじ止め可能としても良い。
なお、ロッド結合孔２０を有する円筒部３９は、ネジ部の長さがバーリング加工によりピストンロッドの螺合に必要な長さにより確保される。
また、ブッシュ結合孔９，９を有する円筒部３５，３６は、各円筒部３５，３６の高さがバーリング加工によりブッシュの圧入長の半分の長さに設定され、ブッシュの圧入に必要な長さが確保される。即ち、バーリング加工により成型されるブッシュ結合孔９，９を有する円筒部３５，３６のそれぞれの高さをブッシュの圧入長の半分の長さで設定したことにより、ブッシュの圧入長に対する円筒部３５，３６のバーリング加工による加工量が半分となるので、円筒部３５Ａ，３６Ａの先端同士を当接させて溶接する場合等であってもブッシュの圧入代を確保しながら加工精度を向上させることができ、さらに、バーリング加工時に円筒部３５，３６に生じやすいひび割れ等の加工不良の発生を抑制して、取付具２の製造における歩留まりを向上させることができる。
以上の加工により、小円孔２０ａを成型して、ロッド結合孔２０を有する円筒部３９が形成され、小円孔９ａ，９ａを成型してブッシュ結合孔９，９を有する円筒部３５，３６が形成される。 Intermediate processing;
In the above strip-shaped strip 40, in the intermediate processing, as shown in FIGS. 4A and 4B, the periphery of the small circular hole 20a is projected concentrically in the inner direction of the strip 40 by burring processing. Thus, the cylindrical portion 39 having the rod coupling hole 20 is formed. At this time, the inner peripheral hole of the cylindrical portion 39 may be threaded, and this hole is used as the rod coupling hole 20. Further, the cylindrical portions 35 and 36 having the bush coupling holes 9 and 9 are formed by concentrically projecting the periphery of the small circular holes 9a and 9a on both ends by a burring process in the outer direction of the band plate 40. To do. In this example, the bush coupling holes 9 and 9 of the cylindrical portions 35 and 36 are formed as straight through holes, and are coupled by press-fitting the bushes. However, the bush coupling holes 9, 9 may be threaded and screwed as necessary.
In addition, the cylindrical part 39 which has the rod coupling hole 20 is ensured by the length required for screwing of a piston rod by the burring process.
In addition, the cylindrical portions 35 and 36 having the bush coupling holes 9 and 9 are set to have a height required for the press-fitting of the bush by setting the height of each cylindrical portion 35 and 36 to a half of the press-fitting length of the bush by burring. Is secured. That is, by setting the height of each of the cylindrical portions 35 and 36 having the bush coupling holes 9 and 9 formed by burring to half the length of the press-fit length of the bush, the cylindrical portion 35 with respect to the press-fit length of the bush. 36, the machining amount by burring is halved, so that it is possible to improve the machining accuracy while securing the press-fitting allowance of the bush even when the tips of the cylindrical portions 35A, 36A are brought into contact with each other for welding. Further, it is possible to suppress the occurrence of processing defects such as cracks that are likely to occur in the cylindrical portions 35 and 36 during the burring process, and to improve the yield in manufacturing the fixture 2.
By the above processing, the small circular hole 20a is molded to form the cylindrical portion 39 having the rod coupling hole 20, and the small circular holes 9a, 9a are molded to have the cylindrical coupling portions 35, 36 having the bush coupling holes 9, 9. Is formed.

プレス成型加工処理；
次に、プレス成型加工について説明する。このプレス加工では、折曲線Ｃ，Ｄを支点として帯板４０の両側の片部４１，片部４２を矢印方向（即ち帯板４０）の内側方向に直角に折り曲げて、支持片２７，２８を形成するとともに、対向片３１，３２を対接させる。これにより、細幅片２３，２４が切起された状態で突出する。なお、前もって折曲線Ｅ，Ｅを支点に傾斜片２９，３０を対向片３１，３２側が対接するように内側方向に一定角度折り曲げておく。さらに、対向片３１，３２は、前もって折曲線Ｇを支点に、傾斜片２９，３０に対して外側方向に一定角度折り曲げておく。この折り曲げの際に、リブ形成予定部Ｉ，リブ形成予定部Ｉの範囲に、外側に膨出する如くプレス圧を加えることで、補強部としてのリブ３４，３４を形成する。以上により、図１，図２に示すように、一枚の帯板を成型加工して得た取付具２が完成する。 Press molding processing;
Next, press molding will be described. In this pressing, the pieces 41 and 42 on both sides of the strip 40 are bent at right angles to the inner side of the arrow direction (that is, the strip 40) with the folding curves C and D as fulcrums, and the support pieces 27 and 28 are At the same time, the opposing pieces 31 and 32 are brought into contact with each other. Thereby, the narrow strips 23 and 24 protrude in the cut-and-raised state. The inclined pieces 29 and 30 are bent inward at a certain angle in advance so that the opposing pieces 31 and 32 are in contact with each other with the folding lines E and E as fulcrums. Further, the opposing pieces 31 and 32 are bent in a certain angle outward with respect to the inclined pieces 29 and 30 with the folding line G as a fulcrum in advance. At the time of this bending, the ribs 34 and 34 as the reinforcing portions are formed by applying a press pressure so as to bulge outward in the range of the rib formation scheduled portion I and the rib formation planned portion I. As described above, as shown in FIGS. 1 and 2, the fixture 2 obtained by molding and processing one strip is completed.

以上のプレス加工により、図２に示すように、ロッド結合孔２０を有する基片２５ｍの四辺に、広幅片２１，２２及び細幅片２３，２４を設けた固定部２５が形成され、さらに、折曲線Ｃ，Ｄからの折り曲げにより支持片２７，２８が形成され、折曲線Ｅと折曲線Ｇとの間により傾斜片２９，３０が形成され、帯板４０の対向片３１，３２が互いに対接することで、対向片３１，３２の両端側の円筒部３５，３６を背合わせに対接させて、円筒部３５のブッシュ結合孔９と、円筒部３６のブッシュ結合孔９とを一連の連通孔とする。
なお、このプレス加工では、リブ形成予定部Ｉ，Ｉで囲まれる矩形の部分の板厚が外方に膨出されることで、傾斜片２９，対向片３１間及び傾斜片３０，対向片３２間に補強部としてのリブ３４，３４が形成されるので、強度を高めることができる。なお、支持片２７，２８の折曲線Ｃ，Ｄを支点とする折曲、折曲線Ｅを支点とする折曲、折曲線Ｇを支点とする折曲の順序は、上記順序に限定されず、この折曲はいかなる順序でも最終製品としての取付具２が形成されれば良い。 As a result of the above pressing, as shown in FIG. 2, the fixing portions 25 provided with the wide pieces 21 and 22 and the narrow pieces 23 and 24 are formed on the four sides of the base piece 25 m having the rod coupling hole 20. The support pieces 27 and 28 are formed by bending from the fold lines C and D, the inclined pieces 29 and 30 are formed between the fold line E and the fold line G, and the opposing pieces 31 and 32 of the strip 40 are paired with each other. By making contact, the cylindrical portions 35 and 36 on both ends of the opposing pieces 31 and 32 are brought into contact with each other back to back, and the bush coupling hole 9 of the cylindrical portion 35 and the bush coupling hole 9 of the cylindrical portion 36 are connected in series. A hole.
In this press working, the plate thickness of the rectangular portion surrounded by the rib formation scheduled portions I and I bulges outward, so that the inclined piece 29 and the opposed piece 31 and between the inclined piece 30 and the opposed piece 32 are formed. Since the ribs 34 and 34 are formed as reinforcing portions, the strength can be increased. In addition, the order of the folding with the folding lines C and D of the support pieces 27 and 28 as the fulcrum, the folding with the folding line E as the fulcrum, and the folding with the folding line G as the fulcrum is not limited to the above order. It is sufficient that the folding fixture 2 as a final product is formed in any order.

図５は、本発明による取付具２の他の実施形態を示し、この場合、図１乃至図４で説明した取付具とほぼ同様の構成をしている。
異なる点は、ブッシュ結合孔９を有する円筒部３５Ａと、ブッシュ結合孔９を有する円筒部３６Ａが例えば、バーリング加工で、対向片３１，３２の内側に突出される。
ここで、円筒部３５Ａ，３６Ａそれぞれは、ブッシュ圧入全長の半分の高さに設定され、円筒部３５Ａ，３６Ａの先端同士を当接させて溶接する場合には、ブッシュの圧入代を十分に確保するように、その高さが設定されている。
以上の構成において、プレス成型工程で、折曲線Ｃ，Ｄを支点として、片部４１，片部４２を基片２５ｍの両側より矢印方向（帯板４０の内側方向）に直角に折り曲げて、支持片２７，２８を形成する。なお、前もって折曲線Ｅ，Ｅを支点に傾斜片２９，３０を内側に一定角度折曲げ、折曲線Ｇ，Ｇを支点に対向片３１，３２側を、傾斜片２９，３０に対し、外側に一定角度折り曲げておく。片部４１，片部４２の以上の成型で、対向片３１,３２が互いに平行となり、円筒部３５Ａ,円筒部３６Ａの先端同士が対接する。円筒部３５Ａ,３６Ａの対接した先端側は、溶接することも可能である。このプレス成型工程で、予定線Ｘ部分を内側方向に膨出することで、リブ３４Ａ，３４Ａを形成して、支持片２７，傾斜片２９，対向片３１間及び支持片２８，傾斜片３０，対向片３２間の強度を高め、取付具２自体の剛性を高めて高強度とすることができる。この場合、補強部としてのリブ３４Ａ，３４Ａは、横向きのＸ字状となっているので、線状に膨出させたリブよりもさらに高強度となる。このような緩衝器の取付具２にピストンロッド６のねじ部６Ａ及びブッシュを強固に取り付けて使用することで、取付具２の長寿命化が図れる。
なお、帯板４０の折り曲げの順序としては前述したものに限定されず、その順序は、種々のものが考えられる。 FIG. 5 shows another embodiment of the fixture 2 according to the present invention. In this case, the fixture 2 has substantially the same configuration as the fixture described in FIGS.
The difference is that the cylindrical portion 35A having the bush coupling hole 9 and the cylindrical portion 36A having the bush coupling hole 9 are protruded inside the opposing pieces 31 and 32 by, for example, burring.
Here, each of the cylindrical portions 35A and 36A is set to a height that is half the bush press-fitting total length, and when the ends of the cylindrical portions 35A and 36A are brought into contact with each other for welding, a sufficient press-fitting allowance for the bush is ensured. The height is set so that.
In the above configuration, in the press molding process, with the folding lines C and D as fulcrums, the piece 41 and the piece 42 are bent at right angles in the arrow direction (inner direction of the strip 40) from both sides of the base piece 25m and supported. The pieces 27 and 28 are formed. The inclined pieces 29 and 30 are bent inward at a fixed angle with the folding lines E and E as fulcrums in advance, and the opposing pieces 31 and 32 side is outward with respect to the inclined pieces 29 and 30 with the folding lines G and G as fulcrums. Bend it at a certain angle. With the above molding of the piece 41 and the piece 42, the opposed pieces 31 and 32 become parallel to each other, and the tips of the cylindrical portion 35A and the cylindrical portion 36A are in contact with each other. The front end side where the cylindrical portions 35A and 36A are in contact can be welded. In this press molding process, ribs 34A and 34A are formed by bulging the portion of the planned line X inward, and the support piece 27, the inclined piece 29, between the opposing pieces 31 and the support piece 28, the inclined piece 30, The strength between the opposing pieces 32 can be increased, and the rigidity of the fixture 2 itself can be increased to increase the strength. In this case, since the ribs 34A and 34A as the reinforcing portions are in the horizontal X shape, the strength is higher than that of the ribs bulged linearly. By attaching the threaded portion 6A of the piston rod 6 and the bush firmly to the mounting tool 2 of such a shock absorber, the life of the mounting tool 2 can be extended.
The order of folding the belt plate 40 is not limited to that described above, and various orders can be considered.

図６は、本発明による取付具の他の実施形態を示す図であり、図１乃至図４の取付具とほぼ同様の構成を有している。
この場合、異なる点は、傾斜片２９を中心に支持片２７に亘って両側に台形状に突出する折曲片３４Ｂ，３４Ｃを形成し、また、傾斜片３０を中心に支持片２８に亘って、両側に台形状に突出する折曲片３４Ｂ，３４Ｃを形成しておき、プレス成型時に、これ等折曲片３４Ｂ，３４Ｃを帯板４０の内側方向に直角に折り曲げることにより、補強部としての折曲片を形成する。この折曲片３４Ｂ，３４Ｃで取付具全体の強度を高めることができる。
なお、折曲片３４Ｂ，３４Ｂの対向片３１，対向片３２は対接させたときに接触するが、この部分を溶接しても良く、これにより取付具の強度をより向上できる。 FIG. 6 is a view showing another embodiment of the fixture according to the present invention, and has substantially the same configuration as the fixture of FIGS. 1 to 4.
In this case, the difference is that the bent pieces 34B and 34C projecting in a trapezoidal shape are formed on both sides over the support piece 27 around the inclined piece 29, and the support piece 28 is formed around the inclined piece 30. The bent pieces 34B and 34C protruding in a trapezoidal shape are formed on both sides, and the bent pieces 34B and 34C are bent at right angles to the inner side of the band plate 40 at the time of press molding. Form a folded piece. The strength of the entire fixture can be increased by the bent pieces 34B and 34C.
The opposing pieces 31 and 32 of the bent pieces 34B and 34B come into contact with each other when they are brought into contact with each other. However, this portion may be welded, whereby the strength of the fixture can be further improved.

図７は、本発明による取付具の他の実施形態を示す平面図、側面図及び完成側面図、完成正面図である。
この場合、完成品としての取付具２は、図１乃至図４で説明した取付具とほぼ同一の形態を成している。即ち、完成品としての取付具２は、図７（ｃ），（ｄ）に示すように、一枚の板より成る帯板５０を加工して製造される。固定部２５は、広幅片２１，広幅片２２、細幅片２３，細幅片２４を四辺に有する上基片２５ｃ及び下基片５４の重なりより成り、この固定部２５の両側より下方に延長し、互いに対向する片部５１，５２が形成される。この片部５１，５２は、支持片２７，２８と、傾斜片２９，３０と、対向片３１，３２及びブッシュ結合孔９を有する円筒部３５，３６とにより形成される。片部５１，片部５２の両端は固定部２５及び固定部２５と対向する下基片５４とで接続される。 FIG. 7 is a plan view, a side view, a completed side view, and a completed front view showing another embodiment of the fixture according to the present invention.
In this case, the fixture 2 as a finished product has substantially the same form as the fixture described in FIGS. That is, the fixture 2 as a finished product is manufactured by processing a strip 50 made of a single plate, as shown in FIGS. 7 (c) and 7 (d). The fixing portion 25 is formed by overlapping an upper base piece 25c having a wide piece 21, a wide piece 22, a thin piece 23, and a thin piece 24 on four sides and a lower base piece 54, and extends downward from both sides of the fixing portion 25. Then, the pieces 51 and 52 facing each other are formed. The pieces 51 and 52 are formed by support pieces 27 and 28, inclined pieces 29 and 30, and cylindrical portions 35 and 36 having opposed pieces 31 and 32 and bush coupling holes 9. Both ends of the piece 51 and the piece 52 are connected by a fixed portion 25 and a lower base piece 54 facing the fixed portion 25.

プレス前処理；
前処理では、取付具２は、図７（ａ），（ｂ）に示す如く、帯板５０の長手方向中央が細幅の底片５３となり、底片５３の両側より、上記片部５１，片部５２が反対方向に延長する。上記底片５３の両側に幅方向に延長する折曲線ａ，ａが、対向片３１，３２の端部側に折曲線ｂ，ｂが、さらに、傾斜片２９，３０の端部側に折曲線ｃ，ｃが形成される。上基片２５ｃの貫通孔２０ｎの横側に細幅片２３を形成するためのコ字状の切断線ｆが１個形成され、この切断線ｆの貫通孔２０ｍを向く切断線ｆの開口端を介して幅方向に延長する折曲線ｄが形成される。
また、上基片２５ｃの先端側に突片２５ｄが形成され、この突片２５ｄの端部の幅方向中心より細幅片２４が突出し、かつ上記上基片２５ｃの両端部より広幅片２１，広幅片２２が突出する。なお、上基片２５ｃを第１基片、下基片５４を第２基片とし、両者は溶接しても良い。
片部５２の端部側には、折曲線ｅが形成され、さらに、その先端側に上記広幅片２１，広幅片２２及び貫通孔２０ｎに対向する広幅片２１ａ，２２ａ及び貫通孔２０ｍを有する下基片５４が形成される。この場合、ブッシュ結合孔９をそれぞれ有する円筒部３５，３６は、バーリング加工により内側方向に突出する如く形成され、これ等は、底片５３の左右の対向片３１，３２に形成される。傾斜片２９を中心にその左右の支持片２７，対向片３１に亘ってＸ字状の内側方向のリブ３４Ａを形成する予定部Ｘが形成され、傾斜片３０から左右の支持片２８，対向片３２に亘って内側方向のＸ字状のリブ３４Ａを形成する予定部Ｘが形成される。 Press pretreatment;
In the pretreatment, as shown in FIGS. 7A and 7B, the fixture 2 has a narrow bottom piece 53 at the center in the longitudinal direction of the band plate 50, and the piece 51 and piece from both sides of the bottom piece 53. 52 extends in the opposite direction. Folding curves a and a extending in the width direction on both sides of the bottom piece 53 are folding curves b and b on the end sides of the facing pieces 31 and 32, and further folding curves c on the end sides of the inclined pieces 29 and 30. , C are formed. One U-shaped cutting line f for forming the narrow piece 23 is formed on the lateral side of the through hole 20n of the upper base piece 25c, and the open end of the cutting line f that faces the through hole 20m of the cutting line f A folding line d extending in the width direction is formed through the.
Further, a protruding piece 25d is formed on the distal end side of the upper base piece 25c, the narrow piece 24 protrudes from the center in the width direction of the end portion of the protruding piece 25d, and the wide piece 21 from both ends of the upper base piece 25c. The wide piece 22 protrudes. The upper base piece 25c may be a first base piece and the lower base piece 54 may be a second base piece, and both may be welded.
A folding line e is formed on the end side of the piece 52, and the lower end having wide pieces 21a, 22a and a through hole 20m facing the wide piece 21, the wide piece 22 and the through hole 20n on the tip side. A base piece 54 is formed. In this case, the cylindrical portions 35 and 36 each having the bush coupling hole 9 are formed so as to protrude inward by burring, and these are formed on the left and right facing pieces 31 and 32 of the bottom piece 53. A planned portion X is formed to form an X-shaped inner rib 34A extending from the inclined piece 29 to the left and right support pieces 27 and the opposing piece 31. The left and right support pieces 28 and the opposing piece are formed from the inclined piece 30. A planned portion X for forming the X-shaped rib 34 </ b> A in the inner direction is formed over 32.

プレス成型加工処理；
従って、プレス成型では、底片５３の両側の折曲線ａ，ａより直角に片部５１，片部５２を内側に折り曲げ、対向させることで円筒部３５，３６の先端側を対接させる。この場合、折曲線ｂ，ｂを支点に傾斜片２９，３０を外側に若干曲げて傾斜片２９，３０を傾斜させ、折曲線ｃ，ｃを支点に支持片２７，２８側を内側にやや曲げておいて、片部５１，片部５２を互いに対向するように折り曲げる。
また、前もって下基片５４側を折曲線ｅを支点に内側に直角に曲げ、固定部２５側の上基片２５ｃも折曲線ｄを支点に内側に直角に曲げておいて、下基片５４の上に、固定部２５の上基片２５ｃを対接させ、貫通孔２０ｎと貫通孔２０ｍとを対向するように位置決めする。完成後は、貫通孔２０ｎ及び貫通孔２０ｍにねじ部６Ａを嵌入して、上基片２５ｃと下基片５４との重なりよりなる固定部２５を上下のナットで締め付けて固定することで、ピストンロッドを結合できる。
なお、片部５１，５２を底片５３の両側より互いに対向方向に折り曲げたときに、下基片５４の上に上基片２５ｃが重なるようにするために、片部５２側は片部５１側よりも下基片５４の厚さ分短くなっている。この場合、ブッシュ取付用の円筒部３５と円筒部３６との対接部分は溶接しても良いが、底片５３による片部５１側と片部５２側との一端側の接続機能及びねじ部６Ａが貫通孔２０ｎ，貫通孔２０ｍに貫入して螺着されることによる他端側の接続機能により、取付具２を強行に組み立てることができるので、この溶接を省略することができる。また、リブ３４Ａ，３４Ａにより取付具２全体の強度を向上できる。
なお、緩衝器１は、油圧型，空圧型いずれであっても本発明を適用できる。 Press molding processing;
Therefore, in the press molding, the end portions of the cylindrical portions 35 and 36 are brought into contact with each other by bending the pieces 51 and 52 inward at right angles to the folding lines a and a on both sides of the bottom piece 53 and making them face each other. In this case, the inclined pieces 29 and 30 are slightly bent outward with the folding lines b and b as fulcrums, and the inclined pieces 29 and 30 are inclined slightly, and the support pieces 27 and 28 are bent slightly inward with the folding lines c and c as fulcrums. The piece 51 and the piece 52 are bent so as to face each other.
Further, the lower base piece 54 is bent inward at a right angle inward with the folding line e as a fulcrum in advance, and the upper base piece 25c on the fixed portion 25 side is also bent inward at a right angle inward with the folding line d as a fulcrum. On top of this, the upper base piece 25c of the fixing portion 25 is brought into contact, and the through hole 20n and the through hole 20m are positioned to face each other. After completion, the screw portion 6A is fitted into the through hole 20n and the through hole 20m, and the fixing portion 25 formed by overlapping the upper base piece 25c and the lower base piece 54 is fastened and fixed by the upper and lower nuts, whereby the piston Can connect rods.
In order to make the upper base piece 25c overlap the lower base piece 54 when the pieces 51 and 52 are folded in opposite directions from both sides of the bottom piece 53, the piece 52 side is the piece 51 side. The lower base piece 54 is shorter than the thickness. In this case, the contact portion between the cylindrical portion 35 for mounting the bush and the cylindrical portion 36 may be welded, but the connecting function of the one end side between the one piece 51 side and the one piece 52 side by the bottom piece 53 and the screw portion 6A. Since the attachment tool 2 can be assembled forcibly by the connecting function on the other end side by being inserted into and screwed into the through holes 20n and 20m, this welding can be omitted. Further, the strength of the entire fixture 2 can be improved by the ribs 34A and 34A.
The present invention can be applied to the shock absorber 1 regardless of whether it is a hydraulic type or a pneumatic type.

上記取付具２は、プレス加工時に割れの生じにくい、例えば鉄のＳＰＨＣ材やＳＰＣＣ材等を使用すると良い。特にこのような素材を用いることで、バーリング加工時の円筒部のクラックや割れを抑制することができるので、取付具２の加工時の不良品の発生を抑制して生産効率の向上及び製品としての信頼性を向上させることができる。   The fixture 2 is preferably made of, for example, iron SPHC material or SPCC material which is not easily cracked during press working. In particular, by using such a material, it is possible to suppress cracks and cracks in the cylindrical portion during burring, thereby suppressing the occurrence of defective products during processing of the fixture 2 and improving production efficiency and products. Reliability can be improved.

なお、各実施形態では、固定部２５に広幅片２１，２２及び細幅片２３，２４を形成するとして説明したが、帯板４０，５０自体の幅を広くし、上基片２５ｍ及び下基片５４の面積を広くすることで、これ等を省略することも可能である。また、固定部２５をダンパーチューブ５側に溶接等で結合することも可能である。
また、対向片３１，３２が互いに対向して接触する部位は、ロッド結合孔２０の中心軸の延長上にあるものとして説明したが、ロッド結合孔２０の中心軸に対して位置ずれ（オフセット）した位置で接触するようにしても良い。また、円筒部３５，３６の高さは、ブッシュの圧入長の半分の長さで設定するとして説明したが、それぞれ異なる高さで円筒部３５，３６を成型して、それぞれ成型された円筒部３５，３６の高さ同士の和が、ブッシュ圧入長となるように成型しても良い。このように、対向片３１，３２同士が互いに接触する位置や、異なる高さで成型された円筒部３５，３６からなるブッシュ結合孔９，９のブッシュ圧入長における半分の位置をロッド結合孔２０の中心軸の位置からオフセットさせることにより、緩衝器１を取り付けるための車体側取付部と車軸側取付部とが車体の全長方向に対して傾斜して設定されていても、車体の全長方向と平行に緩衝器１を取り付けることが可能となる。 In each of the embodiments, the wide pieces 21 and 22 and the narrow pieces 23 and 24 are formed in the fixing portion 25. However, the widths of the strips 40 and 50 themselves are widened, and the upper base piece 25m and the lower base piece are formed. By increasing the area of the piece 54, these can be omitted. It is also possible to couple the fixing portion 25 to the damper tube 5 side by welding or the like.
Moreover, although the site | part which the opposing pieces 31 and 32 mutually oppose and contact is demonstrated as what is on extension of the center axis | shaft of the rod coupling hole 20, position shift (offset) with respect to the central axis of the rod coupling hole 20 is demonstrated. You may make it contact in the position which carried out. Moreover, although the description has been made assuming that the height of the cylindrical portions 35 and 36 is set at half the press-fit length of the bush, the cylindrical portions 35 and 36 are molded at different heights, and the molded cylindrical portions are respectively formed. You may shape | mold so that the sum of the heights 35 and 36 may become bush press-fit length. As described above, the position where the opposing pieces 31 and 32 are in contact with each other, and the half position in the bush press-fitting length of the bush coupling holes 9 and 9 formed of the cylindrical portions 35 and 36 formed at different heights are set to the rod coupling hole 20. Even if the vehicle body side mounting portion and the axle side mounting portion for mounting the shock absorber 1 are set to be inclined with respect to the full length direction of the vehicle body, The shock absorber 1 can be attached in parallel.

以上本発明によれば、１枚板からなる帯板のプレス成型のみで、緩衝器の取付具として形成できるので、材料費、加工費の削減工程数削減による作成時間の短縮が可能となり、従来のプレス成型と比較して、必要な剛性を薄い板厚手達成することで、プレス成型が容易で、歩留まりを改善できる。
特に、本発明では、固定部より平行に一対の片部を突出させるとともに、先端側接触状態を保つように構成したので、一対の片部同士の近接方向の耐力を高め得るので、取付具全体の機械的強度を高めることができる。
また、バーリング加工により一対の片部それぞれにブッシュ結合孔９，９となる円筒部３５，３６を成型することにより、円筒部３５，３６の高さをブッシュの圧入長の半分の長さに設定することができるので、ブッシュの圧入長に対する円筒部３５，３６のバーリング加工による加工量が半分となり、加工精度を維持しながらバーリング加工時に生じやすい円筒部３５，３６のひび割れ等の加工不良を抑制することができる。さらに、円筒部の先端同士を当接させて溶接する場合でも、円筒部の高さをブッシュの圧入長の半分より少し長く成型することで、ブッシュの圧入代を十分に確保しつつ、上記加工不良の発生も抑制することができる。従って、本発明の取付具２によれば、緩衝器の取付具としての十分な強度及び軽量化が得られ、製造時における歩留まりをほとんど無くすことが可能となる。 As described above, according to the present invention, since it can be formed as a shock absorber attachment only by press molding of a single strip, it is possible to shorten the production time by reducing the number of steps of reducing the material cost and processing cost. Compared to the press molding, the required rigidity is achieved with a thin plate thickness, so that the press molding is easy and the yield can be improved.
In particular, in the present invention, since the pair of pieces protrudes in parallel from the fixed portion and the tip end side contact state is maintained, the yield strength in the proximity direction between the pair of pieces can be increased, so the entire fixture The mechanical strength of can be increased.
In addition, the cylindrical portions 35 and 36 that form the bush coupling holes 9 and 9 are formed in the pair of pieces by burring, so that the height of the cylindrical portions 35 and 36 is set to half the press-fit length of the bush. Therefore, the amount of processing by burring of the cylindrical portions 35 and 36 with respect to the press-fit length of the bush is halved, and processing defects such as cracks in the cylindrical portions 35 and 36 that are likely to occur during burring processing are suppressed while maintaining processing accuracy. can do. Furthermore, even when welding with the tips of the cylindrical parts in contact with each other, the height of the cylindrical part is molded slightly longer than half of the press-fitted length of the bush, and the above processing is performed while sufficiently securing the press-fitting allowance of the bush. The occurrence of defects can also be suppressed. Therefore, according to the fixture 2 of this invention, sufficient intensity | strength and weight reduction as a fixture of a shock absorber are obtained, and it becomes possible to almost eliminate the yield at the time of manufacture.

１ 緩衝器、２ 取付具、３ スプリング、４ ダンパー、９ ブッシュ結合孔、
２０ ロッド結合孔、２１，２２ 広幅片、２３，２４ 細幅片、２５ 固定部、
２７，２８ 支持片、２９，３０ 傾斜片、３１，３２ 対向片、３４ リブ、
３５，３６ 円筒部、４０；５０ 帯板。
1 shock absorber, 2 fixture, 3 spring, 4 damper, 9 bush coupling hole,
20 rod coupling hole, 21, 22 wide piece, 23, 24 narrow piece, 25 fixing part,
27, 28 Support piece, 29, 30 Inclined piece, 31, 32 Opposing piece, 34 Rib,
35, 36 Cylindrical part, 40; 50 Band plate.

Claims (8)

一枚の帯板をプレス加工することで成型される緩衝器の取付具の製造方法であって、
緩衝器と結合する固定部を形成する工程と、
前記固定部の両側から互いに平行に延長する一対の片部を形成する工程と、
前記片部のそれぞれの先端側に、板厚方向に貫通して互いに対向するブッシュ結合孔を形成する工程とを含み、
前記一対の片部を形成する際に、前記それぞれの片部のブッシュ結合孔側を接触させることを特徴とする緩衝器の取付具の製造方法。 A method of manufacturing a shock absorber attachment molded by pressing a single strip,
Forming a fixed portion to be coupled with the shock absorber;
Forming a pair of pieces extending parallel to each other from both sides of the fixed portion;
Forming a bush coupling hole that penetrates in the plate thickness direction and faces each other on the tip side of each of the pieces,
A method of manufacturing a shock absorber mounting device , wherein when the pair of pieces are formed, the bush coupling hole side of each piece is brought into contact. 前記一対の片部に、外側方向に突出して前記ブッシュ結合孔を有する円筒部を形成し、当該円筒部の基端側を接触させることを特徴とする請求項１記載の緩衝器の取付具の製造方法。 The pair of support sections, protrudes outwardly to form a cylindrical portion having the bush coupling hole, damper fitting according to claim 1, wherein the Ru contacting the base end of the cylindrical portion Manufacturing method . 前記一対の片部に、内側方向に突出して前記ブッシュ結合孔を有する円筒部を形成し、当該円筒部の先端を接触させることを特徴とする請求項１記載の緩衝器の取付具の製造方法。 The pair of support sections, protrudes inwardly to form a cylindrical portion having the bush coupling hole, the manufacture of fittings of the shock absorber according to claim 1, wherein the Ru contacting the distal end of the cylindrical portion Way . 前記固定部と前記円筒部側との間に補強部を形成することを特徴とする請求項２又は請求項３記載の緩衝器の取付具の製造方法。 4. The method for manufacturing a shock absorber mounting device according to claim 2, wherein a reinforcing portion is formed between the fixed portion and the cylindrical portion side. 前記補強部を、前記一対の片部を板厚方向に膨出変形させて形成することを特徴とする請求項４記載の緩衝器の取付具の製造方法。 Wherein the reinforcing part manufacturing method for shock absorber fitting according to claim 4, wherein forming said pair of support sections by bulging deformation in the thickness direction. 前記補強部を、前記一対の片部の幅方向の両縁部を折曲させて形成することを特徴とする請求項４記載の緩衝器の取付具の製造方法。 Wherein the reinforcing part manufacturing method for shock absorber fitting according to claim 4, wherein the forming the both edge portions in the width direction of the pair of support sections by folding. 前記固定部に、前記緩衝器との結合部の周りに緩衝器のスプリングの端部が配置されるスプリングシート部を形成することを特徴とする請求項１乃至請求項６いずれか記載の緩衝器の取付具の製造方法。 Wherein the fixing portion, the damper and the coupling portion damper according to any one of claims 1 to 6 the ends of the damper springs and forming a spring seat which is disposed around the Method for manufacturing the fixture. 請求項１乃至請求項７いずれか記載の緩衝器の取付具を、車輪側又は車体側に取りつけ可能とすることを特徴とする緩衝器の取付具の製造方法。 The claims 1 to 7 buffer fixture according to any method for producing a shock absorber fixture, characterized in that to enable mounting on the wheel side or the vehicle body.
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