JP3265521B2 - Manufacturing method of joint parts for T-shaped and Y-shaped jointed structures - Google Patents
Manufacturing method of joint parts for T-shaped and Y-shaped jointed structuresInfo
- Publication number
- JP3265521B2 JP3265521B2 JP22988093A JP22988093A JP3265521B2 JP 3265521 B2 JP3265521 B2 JP 3265521B2 JP 22988093 A JP22988093 A JP 22988093A JP 22988093 A JP22988093 A JP 22988093A JP 3265521 B2 JP3265521 B2 JP 3265521B2
- Authority
- JP
- Japan
- Prior art keywords
- shaped
- joint
- manufacturing
- joint part
- mounting portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Description
【０００１】[0001]
【産業上の利用分野】本発明は、フレーム部材の結合構
造に係り、特に第１部材に第２部材をジョイント部品を
介してＴ字形またはＹ字形に突当て状態に結合する結合
構造に用いるジョイント部品の製造法に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure for a frame member, and more particularly to a joint used in a joint structure in which a second member is joined to a first member in a T-shape or a Y-shape via joint parts. It relates to a method for manufacturing parts.
【０００２】[0002]
【従来の技術】従来、例えば自動車，自動２輪車その他
の車両のフレーム構造用構造部材として、アルミニウム
又はアルミニウム合金からなるフレーム材を用いること
が考えられてきており、近時その軽量化が進む中で、ま
すます注目を集めている。図７は、自動車車体のフレー
ム構造の斜視図であって、ルーフピラー２１とセンター
ピラー２２、ルーフピラー２１とフロントルーフレール
２３、ルーフピラー２１とリアールーフレール２４、サ
イドシル２５とセンターピラー２２といった部位は、そ
れぞれ第１部材に第２部材をＴ字形またはＹ字形に突当
て状態に結合する結合構造となっている。従来、ルーフ
ピラー２１とフロントルーフレール２３、ルーフピラー
２１とリアールーフレール２４などの結合部は、それぞ
れ継手部品３１，３２を介して結合され、また、ルーフ
ピラー２１とセンターピラー２２、サイドシル２５とセ
ンターピラー２２などの結合部は、そのまま公知の手段
である溶接，接着，ろう接，ねじ止などで接合してい
る。2. Description of the Related Art Conventionally, it has been considered to use a frame material made of aluminum or an aluminum alloy as a structural member for a frame structure of, for example, an automobile, a motorcycle, and other vehicles, and the weight thereof has recently been reduced. Inside, it is getting more and more attention. FIG. 7 is a perspective view of the frame structure of the vehicle body. Parts such as the roof pillar 21 and the center pillar 22, the roof pillar 21 and the front roof rail 23, the roof pillar 21 and the rear roof rail 24, and the side sill 25 and the center pillar 22 are each a first part. It has a connecting structure in which the second member is connected to the member in a T-shaped or Y-shaped abutting state. Conventionally, connecting portions such as the roof pillar 21 and the front roof rail 23, and the roof pillar 21 and the rear roof rail 24 are connected via joint parts 31 and 32, respectively, and the roof pillar 21 and the center pillar 22 and the side sill 25 and the center pillar 22 are connected. The joints are joined by known means such as welding, bonding, brazing, screwing, and the like.
【０００３】[0003]
【発明が解決しようとする課題】例えば上記の例にあっ
ては、ルーフピラー２１とフロントルーフレール２３、
ルーフピラー２１とリアールーフレール２４などの結合
部は、溶接等により継手部品３１，３２をルーフピラー
２１に固定し、フロントルーフレール２３およびリアー
ルーフレール２４を継手部品３１，３２に結合するか、
継手部品３１，３２をフロントルーフレール２３又はリ
アールーフレール２４に先に固定し、その後ルーフピラ
ー２１に固定していた。また、別の手段としては、上記
の結合部でルーフピラー２１が分断されており、３方ジ
ョイントを用いて結合していた。更に、ルーフピラー２
１とセンターピラー２２、サイドシル２５とセンターピ
ラー２２などの結合部では、溶接等固定の際の位置決め
が難しく、仮接合が必要となり、いずれの場合も作業工
数が増える問題点があった。本発明は、従来の結合構造
における上記した問題点を解決し、第１部材に第２部材
を簡単に結合することができるＴ字・Ｙ字形結合構造用
のジョイント部品の有効な製造法を提供することを目的
とする。For example, in the above-described example, the roof pillar 21 and the front roof rail 23,
The joint between the roof pillar 21 and the rear roof rail 24, etc., fixes the joint parts 31, 32 to the roof pillar 21 by welding or the like, and connects the front roof rail 23 and the rear roof rail 24 to the joint parts 31, 32,
The joint parts 31 and 32 are fixed to the front roof rail 23 or the rear roof rail 24 first, and then fixed to the roof pillar 21. Further, as another means, the roof pillar 21 is divided at the above-mentioned connecting portion, and the roof pillar 21 is connected using a three-way joint. Furthermore, roof pillar 2
At the joints such as 1 and the center pillar 22, and between the side sill 25 and the center pillar 22, it is difficult to perform positioning at the time of fixing by welding or the like, and temporary joining is required. The present invention solves the above-mentioned problems in the conventional connection structure, and provides an effective manufacturing method of a joint part for a T-shaped / Y-shaped connection structure that can easily connect the second member to the first member. The purpose is to do.
【０００４】[0004]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明は、第１部材に第２部材をジョイント部品
を介してＴ字形またはＹ字形に突当て状態に結合する結
合構造用ジョイント部品を製造するに当り、内壁上下の
それぞれ対称の位置に２本ずつの爪部を形成し、中空部
を有する押出形材を、長手方向に左右対称に２分割し、
第２部材の取付け部と、開口部側に第１部材との結合部
を有する断面コ字状のジョイント部品を得ることを特徴
とするＴ字・Ｙ字形結合構造用ジョイント部品の製造法
を構成した。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a connecting structure for connecting a second member to a first member in a T-shape or a Y-shape through a joint part. In manufacturing the joint part, two claw portions are formed at symmetrical positions on the upper and lower sides of the inner wall, and the extruded shape having the hollow portion is divided into two symmetrically in the longitudinal direction,
A method of manufacturing a joint part for a T-shaped / Y-shaped joint structure, characterized in that a joint part having a U-shaped cross section having a mounting part for a second member and a coupling part with the first member on the opening side is obtained. did.
【０００５】[0005]
【作用】ジョイント部品は、押出形材を２分割すること
にて得られる。また、その結合部が、第１部材の結合部
にスナップ式に嵌め込まれる状態で、結合される。The joint part is obtained by dividing the extruded profile into two parts. In addition, the coupling portion is coupled with the coupling portion of the first member in a state of being snap-fitted.
【０００６】[0006]
【実施例】以下に、本発明の実施例を図面について詳細
に説明する。図３は、本発明の製造法により得たジョイ
ント部品を用いたＴ字形結合構造の斜視図、図４は、そ
の各部の分解斜視図である。図中、符号１は、例えば自
動車車体のフレーム構造におけるルーフピラーを構成す
る第１部材であり、符号２は、同じくセンターピラーを
構成する第２部材である。第１部材と第２部材とは、ジ
ョイント部品３を介してＴ字形に突当て状態に結合され
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 3 is a perspective view of a T-shaped coupling structure using a joint part obtained by the manufacturing method of the present invention, and FIG. 4 is an exploded perspective view of each part thereof. In the drawing, reference numeral 1 denotes a first member that forms a roof pillar in a frame structure of an automobile body, for example, and reference numeral 2 denotes a second member that also forms a center pillar. The first member and the second member are joined in a T-shaped abutting state via the joint part 3.
【０００７】第１部材１及び第２部材２は、アルミニウ
ム又はアルミニウム合金からなる押出形材で構成され、
また、ジョイント部品３は、中空部を有する押出形材を
長手方向に分割して得たものが用いられる。第１部材１
は、断面角型のホロー形材で構成され、その上下面に、
ジョイント部品３と係合されるべき２条の結合凹部１
ａ，１ａが形成されている。ジョイント部品３は、断面
コ字状の部品で、その後方中央部に、第２部材２の形材
内径よりも小さい外径を有する膨出部３ｃを設け、第２
部材２の取付け部３ｂを形成しており、その開口部先端
に、前記第１部材の結合凹部１ａ，１ａと係合されるべ
き２条の結合凸部（爪部）３ａ，３ａを有する。第２部
材２は、扁平状に押出されたホロー形材で、左右にフィ
ン２ａ，２ａが形成されている。The first member 1 and the second member 2 are made of extruded members made of aluminum or aluminum alloy.
The joint component 3 is obtained by dividing an extruded shape having a hollow portion in the longitudinal direction. First member 1
Is composed of hollow hollow material with a square cross section.
Two coupling recesses 1 to be engaged with the joint part 3
a, 1a are formed. The joint part 3 is a part having a U-shaped cross section, and a bulging part 3c having an outer diameter smaller than the inner diameter of the shape of the second member 2 is provided at the rear central part thereof.
The mounting portion 3b of the member 2 is formed, and has two connecting convex portions (claw portions) 3a, 3a to be engaged with the connecting concave portions 1a, 1a of the first member at the opening end. The second member 2 is a hollow extruded flat member having fins 2a, 2a formed on the left and right.
【０００８】第１部材１と第２部材２とをジョイント部
品３を介して結合するには、図４に示すように、先ず、
第２部材２をジョイント部品３に形成した取付け部３ｂ
に、必要により接着剤を塗布した上、外嵌し、必要に応
じ、抵抗溶接，ＭＩＧ溶接，ＴＩＧ溶接，レーザー溶接
等の手段により強固に接合する。第２部材２を取付けた
ジョイント部品３は、図４に示すように、その爪部３
ａ，３ａが第１部材１の２条の結合凹部１ａ，１ａに、
いわゆるスナップ式に嵌め込まれて（図３参照）仮結合
される。この際、仮結合部に必要により接着剤を塗布し
ておく。第１部材１とジョイント部品３とは、仮結合の
後に、必要に応じ抵抗溶接，ＭＩＧ溶接，ＴＩＧ溶接，
レーザー溶接等の手段により強固に接合される。To join the first member 1 and the second member 2 through the joint part 3, first, as shown in FIG.
Attachment part 3b in which second member 2 is formed on joint part 3
Then, if necessary, an adhesive is applied and then externally fitted, and if necessary, firmly joined by means such as resistance welding, MIG welding, TIG welding, or laser welding. The joint part 3 to which the second member 2 is attached is, as shown in FIG.
a, 3a are provided in the two connecting recesses 1a, 1a of the first member 1,
It is fitted in a so-called snap type (see FIG. 3) and temporarily connected. At this time, an adhesive is applied to the temporary connection portion as necessary. After the temporary connection, the first member 1 and the joint part 3 are connected by resistance welding, MIG welding, TIG welding,
Strongly joined by means such as laser welding.
【０００９】図１の (a)及び (b)は、本発明に係るＴ字
・Ｙ字形結合構造用ジョイント部品の製造法の一例を示
す斜視図及び断面図である。アルミニウム又はアルミニ
ウム合金の押出により得られる断面ほぼ角形で中空部を
有する押出形材３０には、その内壁上下のそれぞれ対称
の位置に２本ずつの爪部３ａ，３ａを形成してある。そ
して、その両方の外側面に、バルジ加工又はプレス加工
により膨出部３ｃ，３ｃを形成し、前記第２部材２を結
合するための取付け部３ｂ，３ｂを設けている。なお、
本例にあっては、バルジ加工により膨出させた後にその
先端を切断して取付け部３ｂを形成した。この押出形材
３０は、図１の (b)のＡ−Ａ線において長手方向に切断
され、２分割されて、図２に示すように、後方中央部に
第２部材２の取付け部３ｂが形成され、開口部先端に爪
部３ａ，３ａを有する断面コ字状のジョイント部品３が
製造される。取付け部３ｂをプレス成形により成形する
場合は、Ａ−Ａ線により切断後取付け部を成形する。FIGS. 1 (a) and 1 (b) are a perspective view and a sectional view showing an example of a method of manufacturing a joint part for a T / Y-shaped joint structure according to the present invention. The extruded member 30 having a substantially square cross section and a hollow portion obtained by extrusion of aluminum or an aluminum alloy is provided with two claw portions 3a, 3a at symmetrical positions on the upper and lower sides of the inner wall. On both outer surfaces, bulging portions 3c are formed by bulging or pressing, and mounting portions 3b for connecting the second member 2 are provided. In addition,
In the present example, after bulging by bulging, the tip was cut to form the mounting portion 3b. This extruded shape member 30 is cut in the longitudinal direction along the line AA in FIG. 1B, and is divided into two parts. As shown in FIG. 2, the mounting part 3b of the second member 2 is provided at the rear central part. The joint part 3 having a U-shaped cross section is formed and has the claw portions 3a at the tip of the opening. When the mounting portion 3b is formed by press molding, the mounting portion is formed after cutting along the line AA.
【００１０】なお、上記の実施例においては、第１部材
１及びジョイント部品３に、それぞれ２条の結合部を形
成した場合について示したが、必要により条数を増加し
てもよく、また、結合凹部と結合凸部を逆に形成しても
よい。更に、第１部材１及び第２部材２が、自動車車体
のフレーム構造におけるルーフピラー及びセンターピラ
ーである場合について説明したが、第１部材は例えばサ
イドシル、第２部材はフロントルーフレール又はリアー
ルーフレールのように、Ｙ字形に結合される部分にあっ
てもジョイント部品３を介して突当て状態に結合する部
位であれば、いずれにも適用される。In the above embodiment, the case where two joints are formed on the first member 1 and the joint part 3 is shown. However, the number of joints may be increased if necessary. The coupling concave portion and the coupling convex portion may be formed in reverse. Furthermore, the case where the first member 1 and the second member 2 are a roof pillar and a center pillar in a frame structure of an automobile body has been described, but the first member is, for example, a side sill, and the second member is a front roof rail or a rear roof rail. , And any portion that is connected in abutting state via the joint part 3 is applied to any portion connected in a Y-shape.
【００１１】また、ジョイント部品３の膨出部３ｃ，３
ｃ、取付け部３ｂ，３ｂを、図２に示す例では３ｙ面に
形成したが、３ｚ面に形成してもよい。更に、第１部材
が曲げられた形状で形成される場合は、結合部材はＡ−
Ａ線にて切断後曲げ加工を施せばよい。図５は、これら
の場合の例を示し、上記実施例と同一符号を付してその
説明を省略する。一方、図６は、押出に際して形成した
フランジを取付け部３ｂ，３ｂとした例で、第２部材を
カシメで固定するものである他、前記実施例と同一符号
を付して説明を省略する。The bulging portions 3c, 3 of the joint part 3
c, the mounting portions 3b, 3b are formed on the 3y surface in the example shown in FIG. 2, but may be formed on the 3z surface. Further, when the first member is formed in a bent shape, the connecting member is A-
Bending may be performed after cutting along the line A. FIG. 5 shows an example of these cases, and the same reference numerals as those in the above-described embodiment are used and the description thereof is omitted. On the other hand, FIG. 6 shows an example in which the flanges formed at the time of extrusion are used as the mounting portions 3b, 3b. The second member is fixed by caulking, and the same reference numerals as those in the above embodiment are used, and the description is omitted.
【００１２】[0012]
【発明の効果】上記の構成からなる本発明のジョイント
部品を使用すれば、第１部材に形成した結合部と、第２
部材が取付けられたジョイント部品に形成した結合部と
を、いわゆるスナップ式にカチッと嵌め込むように結合
できるので、位置決めが簡単であり、仮接合が不要とな
ると共に、作業工数も従来技術にくらべ大きく削減でき
る。そして、内壁上下のそれぞれ対称の位置に２本ずつ
の爪部を形成し、かつ、両側面に膨出部を形成した断面
ほぼ角形の押出形材を、長手方向に左右対称に２分割
し、第２部材との結合部と、開口部先端に第１部材との
結合部を有する断面コ字状のジョイント部品を得るよう
にしたので、一工程で一対のジョイント部品を製造する
ことができ、効率的である。According to the joint component of the present invention having the above-described structure, the joint formed on the first member and the second joint can be used.
The joints formed on the joint parts to which the members are attached can be joined so as to snap-fit in a so-called snap-type, so positioning is easy, temporary joining is not required, and the number of working steps is smaller than that of the conventional technology. Can be greatly reduced. Then, an extruded shape member having a substantially square cross section in which two claw portions are formed at symmetrical positions on the upper and lower sides of the inner wall and bulging portions are formed on both side surfaces is divided into two symmetrically in the longitudinal direction, Since the joint part with the second member and the joint part having the joint part with the first member at the tip of the opening are obtained, a pair of joint parts can be manufactured in one step, It is efficient.
【図１】(a)及び (b)は、本発明に係るＴ字・Ｙ字形結
合構造用ジョイント部品の製造法の一例を示す斜視図及
び断面図である。FIGS. 1 (a) and 1 (b) are a perspective view and a cross-sectional view showing an example of a method for manufacturing a joint part for a T-shaped / Y-shaped joint structure according to the present invention.
【図２】本発明の方法により得たＴ字・Ｙ字形結合構造
用ジョイント部品の斜視図である。FIG. 2 is a perspective view of a joint part for a T / Y joint structure obtained by the method of the present invention.
【図３】本発明の方法により得たジョイント部品を用い
たＴ字形結合構造の斜視図である。FIG. 3 is a perspective view of a T-shaped coupling structure using a joint component obtained by the method of the present invention.
【図４】図３の各部の分解斜視図である。FIG. 4 is an exploded perspective view of each part of FIG.
【図５】本発明の方法により得たジョイント部品を用い
たＴ字形結合構造の他の例の斜視図である。FIG. 5 is a perspective view of another example of a T-shaped coupling structure using a joint component obtained by the method of the present invention.
【図６】本発明の方法により得たジョイント部品を用い
たＴ字形結合構造の更に他の例の斜視図である。FIG. 6 is a perspective view of still another example of a T-shaped coupling structure using a joint part obtained by the method of the present invention.
【図７】従来の自動車車体のフレーム構造における結合
構造の例を示す分解斜視図である。FIG. 7 is an exploded perspective view showing an example of a coupling structure in a frame structure of a conventional automobile body.
１ …第１部材 １ａ …結合凹部 ２ …第２部材 ２ａ …フィン ３ …ジョイント部品 ３ａ …結合凸部 ３ｂ …取付け部 ３ｃ …膨出部 ３０ …押出形材 DESCRIPTION OF SYMBOLS 1 ... 1st member 1a ... Coupling concave part 2 ... 2nd member 2a ... Fin 3 ... Joint part 3a ... Coupling convex part 3b ... Mounting part 3c ... Swelling part 30 ... Extruded profile
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｂ２３Ｐ 15/00 Ｂ２３Ｐ 15/00 Ｚ (72)発明者 佐藤 正和 埼玉県和光市中央１丁目４番１号株式会 社 本田技術研究所内 (72)発明者 柘植 光雄 静岡県庵原郡蒲原町蒲原１丁目34番１号 株式会社日軽技研内 (72)発明者 樋野 治道 静岡県庵原郡蒲原町蒲原１丁目34番１号 株式会社日軽技研内 (72)発明者 杉山 敬一 東京都港区三田３丁目13番12号 日本軽 金属株式会社内 (72)発明者 河村 繁 静岡県庵原郡蒲原町蒲原１丁目34番１号 株式会社日軽技研内 (56)参考文献 特開 平４−100634（ＪＰ，Ａ) 特開 平４−71741（ＪＰ，Ａ) 特開 昭50−73865（ＪＰ，Ａ) 特開 平５−57387（ＪＰ，Ａ) 実開 平５−84420（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B21D 51/16 B21D 53/86 - 53/88 B21C 23/14 B21D 26/02 B23P 15/00 ──────────────────────────────────────────────────続 き Continued on front page (51) Int.Cl. 7 Identification code FI B23P 15/00 B23P 15/00 Z (72) Inventor Masakazu Sato 1-4-1, Chuo, Wako-shi, Saitama Inside the research institute (72) Mitsuo Tsuge 1-34-1, Kambara, Kambara-cho, Abara-gun, Shizuoka Prefecture Inside Nikkei Giken Co., Ltd. Within Nikkei Giken (72) Inventor Keiichi Sugiyama 3-13-12 Mita, Minato-ku, Tokyo Nippon Light Metal Co., Ltd. (72) Inventor Shigeru Kawamura 1-34-1 Kambara, Kambara-cho, Abara-gun, Shizuoka JP Nikkei Giken (56) References JP-A-4-100634 (JP, A) JP-A-4-71741 (JP, A) JP-A-50-73865 (JP, A) JP-A-5-57387 (JP , A) P, U) (58) investigated the field (Int.Cl. 7, DB name) B21D 51/16 B21D 53/86 - 53/88 B21C 23/14 B21D 26/02 B23P 15/00
Claims (5)
介してＴ字形またはＹ字形に突当て状態に結合する結合
構造用ジョイント部品を製造するに当り、内壁上下のそ
れぞれ対称の位置に２本ずつの爪部を形成し、中空部を
有する押出形材を、長手方向に左右対称に２分割し、開
口部側に第１部材との結合部を有するとともに第２部材
の取付け部とを有する、断面コ字状のジョイント部品を
得ることを特徴とするＴ字・Ｙ字形結合構造用ジョイン
ト部品の製造法。When manufacturing a joint component for a joint structure in which a second member is joined to a first member in a T-shape or a Y-shape via a joint component, two joints are provided at symmetrical positions on the upper and lower sides of the inner wall. An extruded profile having a claw portion for each book and a hollow portion is divided into two parts symmetrically in the longitudinal direction and has a joint portion with the first member on the opening side and a mounting portion for the second member. A method of manufacturing a joint part for a T-shaped / Y-shaped joint structure, characterized in that a joint part having a U-shaped cross section is obtained.
部が形成されてなる請求項１に記載のＴ字・Ｙ字形結合
構造用ジョイント部品の製造法。2. The method according to claim 1, wherein the mounting portion is formed by a bulge formed in the extruded profile.
り取付け部が形成されてなる請求項１に記載のＴ字・Ｙ
字形結合構造用ジョイント部品の製造法。3. The T-shaped and Y-shaped member according to claim 1, wherein the mounting portion is formed by a flange formed of an extruded profile.
Manufacturing method of joint parts for figure joint structure.
り、膨出部を形成し、第２部材の取付け部とした請求項
１に記載のＴ字・Ｙ字形結合構造用ジョイント部品の製
造法。4. The joint part for a T-shaped / Y-shaped joint structure according to claim 1, wherein a bulge is formed on both outer surfaces of the extruded profile by bulging to serve as a mounting portion for the second member. Manufacturing method.
り、膨出部を形成し、第２部材の取付け部とした請求項
１に記載のＴ字・Ｙ字形結合構造用ジョイント部品の製
造法。5. The joint part for a T-shaped / Y-shaped joint structure according to claim 1, wherein a bulging portion is formed on both outer surfaces of the extruded profile by press working, and the bulging portion is used as a mounting portion for the second member. Manufacturing method.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22988093A JP3265521B2 (en) | 1993-09-16 | 1993-09-16 | Manufacturing method of joint parts for T-shaped and Y-shaped jointed structures |
| US08/306,478 US5716155A (en) | 1993-09-16 | 1994-09-15 | T-shaped connection frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22988093A JP3265521B2 (en) | 1993-09-16 | 1993-09-16 | Manufacturing method of joint parts for T-shaped and Y-shaped jointed structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0780578A JPH0780578A (en) | 1995-03-28 |
| JP3265521B2 true JP3265521B2 (en) | 2002-03-11 |
Family
ID=16899159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22988093A Expired - Fee Related JP3265521B2 (en) | 1993-09-16 | 1993-09-16 | Manufacturing method of joint parts for T-shaped and Y-shaped jointed structures |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3265521B2 (en) |
-
1993
- 1993-09-16 JP JP22988093A patent/JP3265521B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0780578A (en) | 1995-03-28 |
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