JPH0538992A - Automotive door guard beam and manufacture thereof - Google Patents
Automotive door guard beam and manufacture thereofInfo
- Publication number
- JPH0538992A JPH0538992A JP3219340A JP21934091A JPH0538992A JP H0538992 A JPH0538992 A JP H0538992A JP 3219340 A JP3219340 A JP 3219340A JP 21934091 A JP21934091 A JP 21934091A JP H0538992 A JPH0538992 A JP H0538992A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- strength
- door guard
- press
- guard beam
- 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.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車のドアの内部に
装着して衝突時（特に側面衝突）や転倒時等に搭乗者を
保護するようにした、自動車用ドアガードビーム及びそ
の製造方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 door guard beam for an automobile and a method for manufacturing the same, which is mounted inside a door of an automobile to protect an occupant during a collision (particularly a side collision) or a fall. It is a thing.
【０００２】[0002]
【従来の技術】自動車用ドアガードビームは、従来種々
の物が開発され実用に供されているが、大きく分けると
全プレス成形品と、一部パイプ使用品に分類される。全
プレス成形品は、ドアガードビーム用に開発された100
〜120 Kg/mm2級の高張力鋼板からプレス成形した構成部
品をスポット溶接で結合一体化したものであり、一部パ
イプ使用品は高周波焼入れ等によって補強したパイプを
主体とし、その両端部にプレス成形ブラケットを溶接に
より取り付けたもので、全プレス成形品に比べると軽量
であることから主流と成りつつある。2. Description of the Related Art Various types of automobile door guard beams have been developed and put to practical use, but they are roughly classified into all press-molded products and some pipe-used products. All press products are 100 developed for door guard beams.
〜 120 Kg / mm 2 High-strength steel sheet of high grade steel is press-molded and integrated by spot welding.Some pipes are mainly reinforced by induction hardening, etc. The press-formed bracket is attached by welding, and it is becoming mainstream because it is lighter than all press-formed products.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
パイプタイプ（一部パイプ使用品）の物は、高周波加熱
設備等の新規の大型専用投資が必要になること、高周波
加熱の生産性が低いこと、パイプを単品加工しなければ
ならないのでコスト高になること等の問題点がある。
又、要求される強度を満足するためにパイプ自体の強度
及び高周波加熱処理後の強度設定が難しく、設計及び品
質管理が非常に困難である。更に、パイプタイプの物
は、前記のように全プレス成形品に比べると軽量である
が、より一層の軽量化が望まれている。このため、従来
はパイプの中央部を残して両端の所定部分をスェージン
グ加工等によって薄肉化を図っているが、コスト高にな
って必ずしも好ましいとは云えない。However, the conventional pipe type (partly pipe-using product) requires a new large-scale dedicated investment such as high-frequency heating equipment and low productivity of high-frequency heating. However, there is a problem that the cost becomes high because the pipe must be processed separately.
Further, since the strength required is satisfied, it is difficult to set the strength of the pipe itself and the strength after high-frequency heat treatment, which makes design and quality control very difficult. Further, although the pipe type product is lighter than the whole press-molded product as described above, further weight saving is desired. For this reason, conventionally, although the central portion of the pipe is left, predetermined portions at both ends are thinned by swaging or the like, but it is not necessarily preferable because of high cost.
【０００４】本発明は、このような従来の問題点を解決
するためになされ、パイプの高周波加熱処理を不要と
し、要求される任意の強度に容易に対処することがで
き、しかも軽量化を実現したパイプタイプの自動車用ド
アガードビームを提供することを課題としたものであ
る。The present invention has been made to solve the above-mentioned conventional problems, does not require high-frequency heat treatment of a pipe, can easily cope with desired strength, and realizes weight reduction. It is an object of the present invention to provide a pipe-type automobile door guard beam.
【０００５】[0005]
【課題を解決するための手段】この課題を技術的に解決
するための手段として本発明は、高強度の外管内に、こ
の外管と同等の強度を有する内管を挿入固着し、前記内
管の長さ寸法によって任意の強度に設定できるようにし
た自動車用ドアガードビームを要旨とするものである。
又、高強度の外管内に、プレス成形用100 〜120Kg/mm2
級の高張力鋼板又はこれに準ずる鋼板を使用してロール
加工又はそれに準じた加工により所定の長さに形成され
且つその長さ方向にスリットを有する内管を、一定の締
代をもって圧入し固着する自動車用ドアガードビームの
製造方法を要旨とするものである。As a means for technically solving this problem, the present invention provides a high-strength outer tube by inserting and fixing an inner tube having the same strength as the outer tube. The gist of the invention is an automobile door guard beam that can be set to any strength depending on the length of the pipe.
In addition, 100-120 kg / mm 2 for press molding in a high-strength outer tube.
High-strength steel sheet or its equivalent grade is used to roll-in or process it in a similar manner to form an inner tube with a predetermined length and a slit in the length direction, and press-fit it with a certain tightening allowance and fix it. The gist is a method of manufacturing a vehicle door guard beam.
【０００６】[0006]
【作 用】パイプに対して高周波加熱処理を行わないの
で、その熱処理に起因する前記従来の懸案事項を全て解
決することができ、且つ内管の強度を変えることによっ
て全体の強度調整が可能となることから、強度設計及び
品質管理が簡単になると共に、要求される強度に容易に
対処することができる。外管の肉厚を薄くできることか
ら内管を付加しても全体の重量を軽減することができ
る。[Operation] Since the high-frequency heat treatment is not applied to the pipe, it is possible to solve all the above-mentioned conventional concerns due to the heat treatment, and it is possible to adjust the overall strength by changing the strength of the inner pipe. Therefore, strength design and quality control are simplified, and required strength can be easily dealt with. Since the outer tube can be made thin, the total weight can be reduced even if the inner tube is added.
【０００７】[0007]
【実施例】以下、図示の実施例により本発明を詳細に説
明する。図１は、本発明に係るドアガードビーム１であ
り、パイプ部２を主体とし、その両端部にプレス成形し
たブラケット３、４を溶接により取り付けて形成されて
いる。The present invention will be described in detail below with reference to the illustrated embodiments. FIG. 1 shows a door guard beam 1 according to the present invention, which is mainly composed of a pipe portion 2 and has press-formed brackets 3 and 4 attached to both ends thereof by welding.
【０００８】パイプ部２は、長さ及び管径共に指定され
た高強度管からなる外管21と、この外管21内に挿入固着
された内管22とから構成されている。前記内管22はロー
ル加工又はそれに準じた製法により管状に丸めた形状を
呈し、その側縁同士は接合せずに長さ方向にスリット22
ａを有しており、前記外管21に一定の締代をもって密着
するように圧入され、且つ溶接又は加締めにより固着さ
れる。その固着箇所23は、少なくとも内管22の両端部付
近とする。The pipe portion 2 is composed of an outer pipe 21 made of a high-strength pipe whose length and pipe diameter are designated, and an inner pipe 22 inserted and fixed in the outer pipe 21. The inner tube 22 has a shape rolled into a tubular shape by a rolling process or a manufacturing method similar thereto, and the side edges thereof are not joined to each other and the slits 22 are formed in the longitudinal direction.
It has a and is press-fitted to the outer tube 21 so as to be in close contact with the outer tube 21 with a certain tightening margin, and is fixed by welding or caulking. The fixing point 23 is at least near both ends of the inner pipe 22.
【０００９】このようにして形成したパイプ部２の曲げ
強度試験を行った結果、図４のようなグラフが得られ
た。 但し、試料Ａ：直径27.1mm、肉厚1.6mm で長さ1000mmの
内管 試料Ｂ：直径27.1mm、肉厚2.1mm で長さ1000mmの外管 試料Ｃ：前記外管の中央部に長さ400mm の前記内管を圧
入固着 試料Ｄ：前記外管の中央部に長さ500mm の前記内管を圧
入固着 試料Ｅ：前記外管の中央部に長さ600mm の前記内管を圧
入固着 したものであり、最大荷重はそれぞれ試料Ａ：410Kg 、
試料Ｂ：1030Kg、試料Ｃ：1360Kg、試料Ｄ：1400Kg、試
料Ｅ：1420Kgであった。尚、試験方法は自動車安全規準
規格（ＭＶＳＳ）により行った。As a result of the bending strength test of the pipe portion 2 thus formed, a graph as shown in FIG. 4 was obtained. However, sample A: inner tube with a diameter of 27.1 mm and wall thickness of 1.6 mm and a length of 1000 mm Sample B: outer tube with a diameter of 27.1 mm and wall thickness of 2.1 mm and a length of 1000 mm Sample C: length at the center of the outer tube 400 mm of the inner tube is press-fitted and fixed Sample D: The inner tube having a length of 500 mm is press-fitted and fixed to the central portion of the outer tube Sample E: The inner tube having a length of 600 mm is press-fitted and fixed to the central portion of the outer tube And the maximum load is sample A: 410 kg, respectively.
The sample B was 1030 kg, the sample C was 1360 kg, the sample D was 1400 kg, and the sample E was 1420 kg. In addition, the test method was performed according to the automobile safety standard (MVSS).
【００１０】ところで、従来のパイプタイプのドアガー
ドビームに用いられる単管は、通常直径27.1mm、肉厚3.
7mm で長さ1000mmであり、この曲げ強度を前記試験方法
により測定すると1394Kgf/mmであった。前記試料Ｅの曲
げ強度は1420Kgf/mmであり、従来の単管の強度と殆ど差
異のない値が得られた。この場合、重量を比較すると従
来の単管は前記サイズのもので2.144Kg であるのに対し
て、前記試料Ｅは1.776Kg であり、その差は0.368Kg で
重量比17.2％の減少であった。つまり、強度的には殆ど
差がなくて重量比で17.2％軽減した製品が得られること
になる。By the way, a single pipe used for a conventional pipe type door guard beam has a diameter of usually 27.1 mm and a wall thickness of 3.
The length was 7 mm and the length was 1000 mm, and the bending strength was 1394 Kgf / mm when measured by the above-mentioned test method. The bending strength of the sample E was 1420 Kgf / mm, which was almost the same as the strength of the conventional single tube. In this case, comparing the weight, the conventional single tube has the size of 2.144 Kg, whereas the sample E has the weight of 1.776 Kg, and the difference is 0.368 Kg, which is a decrease of 17.2% by weight. .. In other words, there is almost no difference in strength, and a product with a weight ratio reduced by 17.2% can be obtained.
【００１１】内管は完全なパイプ形状ではなく、ロール
成形等によりパイプ状に丸めて端縁同士を接合しないで
スリットを残したままの形状としたので、外管内に挿入
する際にその外管の内径と内管の外径とに誤差が生じて
いても、内管の外径を多少変形することにより外管内に
的確に挿入することができる。好ましくは、内管の外径
を外管の内径より僅かに大きくして前記のように内管を
外管内に一定の締代をもって圧入できるようにする。The inner tube is not a perfect pipe shape, but is formed by rolling into a pipe shape without joining the edges to each other and leaving a slit. Therefore, when the inner tube is inserted into the outer tube, Even if there is an error between the inner diameter of the inner tube and the outer diameter of the inner tube, the outer tube can be accurately inserted into the outer tube by slightly deforming the outer diameter. Preferably, the outer diameter of the inner tube is slightly larger than the inner diameter of the outer tube so that the inner tube can be press-fitted into the outer tube with a certain interference as described above.
【００１２】このようにして形成された二重構造のパイ
プ部２は、前記のように両端部にプレス成形したブラケ
ット３、４が溶接により取り付けられてドアガードビー
ム１となり、自動車用ドア（図示せず）の内部に組み込
まれて使用される。The double-structured pipe portion 2 formed in this manner has the brackets 3 and 4 press-formed at both ends as described above and is attached by welding to form the door guard beam 1, which serves as an automobile door (not shown). It is used by being incorporated inside.
【００１３】[0013]
【発明の効果】以上説明したように、本発明によれば、
指定寸法の外管の内部に要求される強度に対応する長さ
に設定した内管を、外管の内壁に密着するように圧入す
ると共に溶接等により固着したので、次のような優れた
効果が得られる。 設備投資の削減及びコストの低減が計れる。 外管は高強度管を用いるため高周波焼入れが不要とな
り、高周波加熱設備等の新規の大型専用投資が要らない
からである。 加工工程の削減と生産性の向上が計れる。 パイプの単品焼入れ工程が不要となり、生産性の低い高
周波加熱処理が要らなくなるからである。 強度対応幅が広くなる。 同一サイズの外管内に圧入固着する内管の長さを変更す
ることで、幅広く任意の強度対応が可能となるからであ
る。 素材サイズの統合が計れる。 の対応性から同一サイズの素管を共用することがで
き、工程管理・コスト低減に寄与する。 軽量化が計れる。 薄肉の高強度管が使用可能なことから、強度低下を来す
ことなく現行の異径管方式（スェージングタイプ）同等
以上の軽量化が可能となる。As described above, according to the present invention,
The inner tube set to the required strength inside the outer tube of the specified size is press-fitted so as to be in close contact with the inner wall of the outer tube and fixed by welding etc. Is obtained. It is possible to reduce capital investment and cost. This is because high-strength tubes are used for the outer tube, so induction hardening is not required and new large-scale dedicated investment such as high-frequency heating equipment is not required. The number of processing steps can be reduced and productivity can be improved. This is because the single piece quenching process of the pipe becomes unnecessary, and the high-frequency heat treatment with low productivity is not necessary. Wider width of strength. This is because by changing the length of the inner pipe that is press-fitted and fixed in the outer pipe of the same size, a wide range of arbitrary strengths can be achieved. Material sizes can be integrated. Because of the compatibility, it is possible to share the same size tube, which contributes to process control and cost reduction. Weight can be reduced. Since a thin high-strength tube can be used, it is possible to reduce the weight to the same level or more as the existing different diameter tube method (swaging type) without reducing the strength.
【図１】 本発明に係るドアガードビームの一部破断斜
視図である。FIG. 1 is a partially cutaway perspective view of a door guard beam according to the present invention.
【図２】 そのパイプ部の長さ方向に沿った断面図であ
る。FIG. 2 is a sectional view taken along the length direction of the pipe portion.
【図３】 図２のＸ−Ｘ線断面図である。3 is a cross-sectional view taken along line XX of FIG.
【図４】 曲げ強度試験結果のグラフ図である。FIG. 4 is a graph showing bending strength test results.
１…ドアガードビーム ２…パイプ部 ３、４…ブ
ラケット 21…外管 22…内管 22ａ…スリット 23…固着箇所1 ... Door guard beam 2 ... Pipe part 3, 4 ... Bracket 21 ... Outer pipe 22 ... Inner pipe 22a ... Slit 23 ... Fixed part
Claims (2)
度を有する内管を挿入固着し、前記内管の長さ寸法によ
って任意の強度に設定できるようにしたことを特徴とす
る自動車用ドアガードビーム。1. An inner pipe having a strength equivalent to that of the outer pipe is fixedly inserted into the high-strength outer pipe so that the strength can be set to an arbitrary strength depending on the length of the inner pipe. Door guard beam for automobiles.
120Kg/mm2 級の高張力鋼板又はこれに準ずる鋼板を使用
してロール加工又はそれに準じた加工により所定の長さ
に形成され且つその長さ方向にスリットを有する内管
を、一定の締代をもって圧入し固着することを特徴とす
る自動車用ドアガードビームの製造方法。2. A high-strength outer tube with 100 to 100% for press molding.
Use a 120 Kg / mm 2 class high-tensile steel plate or a steel plate similar to this to roll-process or work in a similar manner to form an inner tube with a predetermined length and a slit in the length direction, and tighten a fixed tightening margin. A method for manufacturing an automobile door guard beam, which comprises press-fitting and fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3219340A JPH0538992A (en) | 1991-08-06 | 1991-08-06 | Automotive door guard beam and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3219340A JPH0538992A (en) | 1991-08-06 | 1991-08-06 | Automotive door guard beam and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0538992A true JPH0538992A (en) | 1993-02-19 |
Family
ID=16733923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3219340A Pending JPH0538992A (en) | 1991-08-06 | 1991-08-06 | Automotive door guard beam and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0538992A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998021060A1 (en) * | 1996-11-15 | 1998-05-22 | Henkel Kommanditgesellschaft Auf Aktien | Composite laminate automotive structures |
| US5785376A (en) * | 1995-06-21 | 1998-07-28 | Mascotech Tubular Products, Inc. | Vehicle door beam |
| US5941597A (en) * | 1994-05-24 | 1999-08-24 | Honda Giken Kogyo Kabushiki Kaisha | Structural member of vehicle |
| US6168226B1 (en) | 1994-05-19 | 2001-01-02 | Henkel Corporation | Composite laminate automotive structures |
| US6263635B1 (en) | 1999-12-10 | 2001-07-24 | L&L Products, Inc. | Tube reinforcement having displaceable modular components |
| US6398289B1 (en) * | 2000-10-19 | 2002-06-04 | Benteler Automobiltechnik Gmbh & Co. Kg | Side impact beam |
| US6641208B2 (en) * | 2000-03-14 | 2003-11-04 | L&L Products, Inc. | Heat activated reinforcing sleeve |
| US6722037B2 (en) * | 2001-12-06 | 2004-04-20 | Shape Corporation | Variable thickness tubular doorbeam |
| JP2006213312A (en) * | 2005-01-06 | 2006-08-17 | Nissan Motor Co Ltd | Vehicular energy absorbing member and door guard beam therewith |
| JP2008006935A (en) * | 2006-06-28 | 2008-01-17 | Kobe Steel Ltd | Composite member for automobile |
| JP2012219456A (en) * | 2011-04-05 | 2012-11-12 | Tatsuo Ono | Safety handrail |
| JP2012219455A (en) * | 2011-04-05 | 2012-11-12 | Tatsuo Ono | Safety handrail |
| US8334055B2 (en) | 2004-02-02 | 2012-12-18 | Zephyros, Inc | Composite materials |
-
1991
- 1991-08-06 JP JP3219340A patent/JPH0538992A/en active Pending
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6865811B2 (en) | 1994-05-19 | 2005-03-15 | Henkel Kommanditgesellschaft Auf Aktien | Method of making composite laminate automotive structures |
| US5884960A (en) * | 1994-05-19 | 1999-03-23 | Henkel Corporation | Reinforced door beam |
| US6168226B1 (en) | 1994-05-19 | 2001-01-02 | Henkel Corporation | Composite laminate automotive structures |
| US5941597A (en) * | 1994-05-24 | 1999-08-24 | Honda Giken Kogyo Kabushiki Kaisha | Structural member of vehicle |
| US5785376A (en) * | 1995-06-21 | 1998-07-28 | Mascotech Tubular Products, Inc. | Vehicle door beam |
| WO1998021060A1 (en) * | 1996-11-15 | 1998-05-22 | Henkel Kommanditgesellschaft Auf Aktien | Composite laminate automotive structures |
| US6263635B1 (en) | 1999-12-10 | 2001-07-24 | L&L Products, Inc. | Tube reinforcement having displaceable modular components |
| US6641208B2 (en) * | 2000-03-14 | 2003-11-04 | L&L Products, Inc. | Heat activated reinforcing sleeve |
| US6398289B1 (en) * | 2000-10-19 | 2002-06-04 | Benteler Automobiltechnik Gmbh & Co. Kg | Side impact beam |
| US6915617B2 (en) * | 2001-12-06 | 2005-07-12 | Shape Corporation | Variable thickness tubular doorbeam |
| US6722037B2 (en) * | 2001-12-06 | 2004-04-20 | Shape Corporation | Variable thickness tubular doorbeam |
| US8334055B2 (en) | 2004-02-02 | 2012-12-18 | Zephyros, Inc | Composite materials |
| US9186864B2 (en) | 2004-02-02 | 2015-11-17 | Zephyros, Inc. | Composite materials |
| US10035326B2 (en) | 2004-02-02 | 2018-07-31 | Zephyros, Inc. | Composite materials |
| US10688752B2 (en) | 2004-02-02 | 2020-06-23 | Zephyros, Inc. | Composite materials |
| US11046042B2 (en) | 2004-02-02 | 2021-06-29 | Zephyros, Inc. | Composite materials |
| US11618239B2 (en) | 2004-02-02 | 2023-04-04 | Zephyros, Inc. | Composite materials |
| JP2006213312A (en) * | 2005-01-06 | 2006-08-17 | Nissan Motor Co Ltd | Vehicular energy absorbing member and door guard beam therewith |
| JP2008006935A (en) * | 2006-06-28 | 2008-01-17 | Kobe Steel Ltd | Composite member for automobile |
| JP2012219456A (en) * | 2011-04-05 | 2012-11-12 | Tatsuo Ono | Safety handrail |
| JP2012219455A (en) * | 2011-04-05 | 2012-11-12 | Tatsuo Ono | Safety handrail |
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