JP2005313790A

JP2005313790A - Bumper reinforcement for automobile

Info

Publication number: JP2005313790A
Application number: JP2004135015A
Authority: JP
Inventors: Nobuaki Nozawa; 信明野沢
Original assignee: Nissan Motor Co Ltd
Current assignee: Nissan Motor Co Ltd
Priority date: 2004-04-30
Filing date: 2004-04-30
Publication date: 2005-11-10

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive bumper reinforcement for an automobile in which little labor is required in installation. <P>SOLUTION: The whole reinforcing member 12 installed in an opening 11 of an end part of the bumper reinforcement 10 is formed in an approximately U-shape so that both ends 13, 13 of the reinforcing member 12 are separated wider than the opening 11 of the bumper reinforcement 10. An attitude in the installation of the reinforcement member 12 is set so that a curved part 15 extends to a vehicle body fore-and-aft direction, and both ends 13, 13 of the reinforcing member 12 extend to a substantially horizontal direction. Both ends 13, 13 of the reinforcing member 12 are inserted in the opening 11 of the bumper reinforcement 10 by bending smaller than the opening 11 of the bumper reinforcement 10. The reinforcing member 12 is installed in the opening 11 of the bumper reinforcement 10 by elastic force of both ends 13, 13. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は自動車用バンパーレインフォースの補強構造に関する。 The present invention relates to a reinforcing structure for a bumper reinforcement for automobiles.

従来の自動車用バンパーレインフォースはアルミニウム製で出来ており、部分的な補強を行う構造としては、後述する特許文献１に示すように、レインフォースに形成されたガイド形状の補強部材を嵌合するものや、補強部材を溶接やリベットにより固定するものが知られている（例えば、特許文献１参照）。 Conventional bumper reinforcements for automobiles are made of aluminum, and as a structure for performing partial reinforcement, a guide-shaped reinforcing member formed on the reinforcement is fitted as shown in Patent Document 1 described later. A thing which fixes a reinforcement member and a reinforcement member by welding or a rivet is known (for example, refer to patent documents 1).

例えば、図１１、図１２に示すバンパーレインフォース１は、自動車のフロントバンパーの内側に設置されるものであり、左右両端部が車体中央部側の部分より車体後方側に曲がっている。このバンパーレインフォース１の両端部２の上面部には、アルミニウム製の補強部材３が溶接によって固定されている。また、図１３に示すものでは、バンパーレインフォース１に補強部材３をリベット４にて固定するようになっている。
特開平７−１６４９８３号公報 For example, a bumper reinforcement 1 shown in FIGS. 11 and 12 is installed inside a front bumper of an automobile, and both left and right end portions are bent toward the rear side of the vehicle body from a portion on the vehicle body center side. Aluminum reinforcing members 3 are fixed to the upper surface portions of both end portions 2 of the bumper reinforcement 1 by welding. In the structure shown in FIG. 13, the reinforcing member 3 is fixed to the bumper reinforcement 1 with rivets 4.
JP-A-7-164983

しかし、このような自動車用バンパーレインフォースの場合、バンパーレインフォース１に補強部材３を溶接にて固定する構造であって、衝突時の荷重入力時の補強部材３の脱落を防止するため、溶接長を十二分に確保するという構造となっていたため、アルミニウム製のバンパーレインフォース１の場合は特にコストが高くなり、特殊な生産設備や技術を要するという問題があった。 However, in the case of such a bumper reinforcement for automobiles, the reinforcing member 3 is fixed to the bumper reinforcement 1 by welding, and welding is performed in order to prevent the reinforcing member 3 from falling off at the time of load input at the time of collision. Since the length is sufficiently secured, the bumper reinforcement 1 made of aluminum is particularly expensive, and there is a problem that special production equipment and technology are required.

また、図１３に示すバンパーレインフォースの構造は、リベット４という点により支持する構成となっていたため、衝突時の荷重入力を十分に補強部材３に伝えられないという問題があった。 Further, the structure of the bumper reinforcement shown in FIG. 13 is configured to be supported by the rivet 4, so there is a problem that the load input at the time of collision cannot be sufficiently transmitted to the reinforcing member 3.

また、バンパーレインフォースに形成されたガイド形状の補強部材を挿入するという構成もあったが、車両へのレインフォースメントの取付の際や、車両状態での補強部材の脱落やずれの可能性があるという問題があった。 There was also a configuration in which a guide-shaped reinforcing member formed on the bumper reinforcement was inserted, but there is a possibility that the reinforcing member may fall off or shift when the reinforcement is attached to the vehicle or in the vehicle state. There was a problem that there was.

本発明は、このような問題に着目してなされたものであり、低コストで設置の手間のかからない自動車用バンパーレインフォースを提供することを目的とする。 The present invention has been made paying attention to such a problem, and an object of the present invention is to provide an automobile bumper reinforcement that is low in cost and does not require installation.

上記課題を解決するために、本願の自動車用バンパーレインフォースは、バンパーレインフォースの内部若しくは外部の何れかに補強部材の成形形状より撓ませて装着し、前記補強部材の反力により前記バンパーレインフォースに前記補強部材を固定したことを特徴とする。 In order to solve the above-mentioned problems, the bumper reinforcement for automobiles according to the present application is mounted by being bent from the molded shape of the reinforcing member inside or outside the bumper reinforcement, and the bumper rain force is applied by the reaction force of the reinforcing member. The reinforcing member is fixed to a force.

本発明の自動車用バンパーレインフォースによれば、補強部材の反力によりバンパーレインフォースに固定するので、低コストで設置の手間がかからない。 According to the bumper reinforcement for automobiles of the present invention, it is fixed to the bumper reinforcement by the reaction force of the reinforcing member.

以下、本発明を実施するための最良の形態に係る自動車用バンパーレインフォースを実施例及び図面に基づいて説明する。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an automotive bumper reinforcement according to the best mode for carrying out the present invention will be described based on examples and drawings.

図１、図２は本発明の実施例に係る自動車用バンパーレインフォースの主要部を示したものであり、バンパーレインフォース１０は筒状に形成されており、バンパーレインフォース１０の端部に開口部１１が形成されている。この開口部１１には補強部材１２が装着されている。バンパーレインフォース１０と補強部材１２の材質の組合せは、アルミニウムと鉄、アルミニウムとプラスチックといった組合せが考えられ、この実施例では、補強部材１２を鉄製とし、バンパーレインフォース１０をアルミニウム製とした組合せとされている。 1 and 2 show the main part of a bumper reinforcement for an automobile according to an embodiment of the present invention. The bumper reinforcement 10 is formed in a cylindrical shape and is opened at the end of the bumper reinforcement 10. Part 11 is formed. A reinforcing member 12 is attached to the opening 11. The combination of the material of the bumper reinforcement 10 and the reinforcing member 12 may be a combination of aluminum and iron, or aluminum and plastic. In this embodiment, the reinforcement member 12 is made of iron, and the bumper reinforcement 10 is made of aluminum. Has been.

補強部材１２は、全体がほぼ「Ｕ」字形状に折り曲げられている。補強部材１２の両端部１３、１３は離間しており、補強部材１２は両端部１３、１３を内外に撓ませることができるように弾性力が付与されている。補強部材１２は、両端部１３、１３に力が加えられていない通常状態のときに、両端部１３、１３の外側表面同士の離間距離Ｌ２が、バンパーレインフォース１０の開口部１１の内径Ｌ１より大きくなるように設定されている。補強部材１２は、図２の一点鎖線Ａに示すように、両端部１３、１３を互いに接近させると、補強部材１２の湾曲部１５を開口部１１の中に挿入できるようになっている。 The entire reinforcing member 12 is bent into a substantially “U” shape. Both ends 13 and 13 of the reinforcing member 12 are separated from each other, and the reinforcing member 12 is given an elastic force so that both ends 13 and 13 can be bent inward and outward. When the reinforcing member 12 is in a normal state in which no force is applied to both end portions 13, 13, the distance L2 between the outer surfaces of the both end portions 13, 13 is greater than the inner diameter L 1 of the opening 11 of the bumper reinforcement 10. It is set to be large. As shown by a one-dot chain line A in FIG. 2, the reinforcing member 12 can insert the curved portion 15 of the reinforcing member 12 into the opening 11 when both end portions 13 and 13 are brought close to each other.

補強部材１２の両端部１３、１３の近傍には、溝部１４がそれぞれ形成されている。溝部１４の外側にある両端部１３、１３は、開口部１１の縁に当たるようになっており、補強部材１２全体がバンパーレインフォース１０内部に完全に入り込んでしまうことを防止する掛止部とされている。 Groove portions 14 are formed in the vicinity of both end portions 13 of the reinforcing member 12. Both end portions 13, 13 on the outside of the groove portion 14 come into contact with the edge of the opening portion 11, and serve as a latching portion that prevents the entire reinforcing member 12 from entering the inside of the bumper reinforcement 10. ing.

また、補強部材１２は、バンパーレインフォース１０に装着されるときに、板状の両端部１３、１３をほぼ水平方向に沿うように向けられており、「Ｕ」字形状の湾曲部１５の内側を通る中心線（半円筒形の中心軸方向）が車体前後方向に延びるように向けられて取り付けられる。 Further, when the reinforcing member 12 is attached to the bumper reinforcement 10, the plate-like end portions 13 and 13 are oriented so as to be substantially along the horizontal direction, and the inside of the “U” -shaped curved portion 15. Is attached so that a center line passing through (in the direction of the central axis of the semicylindrical shape) extends in the longitudinal direction of the vehicle body.

また、バンパーレインフォース１０の車体前後の縦壁部分であって、補強部材１２の湾曲部１５の内側に位置する部分には、上下に並ぶボルト穴１６、１６が開口されており、このボルト穴１６、１６に図示しないボルトを通してボルトの先端部を他方の壁に設けたボルト穴１７に螺着させることで補強部材１２が脱落不能になっている。 In addition, bolt holes 16, 16 arranged in the vertical direction are opened in a vertical wall portion of the bumper reinforcement 10 on the front and rear sides of the vehicle body and located inside the curved portion 15 of the reinforcing member 12. The reinforcing member 12 cannot be removed by screwing the bolts 16 and 16 through bolts (not shown) into bolt holes 17 provided in the other wall.

この実施例の自動車用バンパーレインフォース１０では、補強部材１２をバンパーレインフォース１０に装着するに当たって、補強部材１２を撓ませて取り付けているので、コストや組み付け工数が非常に少ないものとなっている。 In the automobile bumper reinforcement 10 of this embodiment, when the reinforcing member 12 is mounted on the bumper reinforcement 10, the reinforcing member 12 is bent and attached, so that the cost and assembly man-hours are very small. .

この実施例のバンパーレインフォース１０の特徴を更に詳しく述べれば、バンパーレインフォース１０の端部の開口部１１に装着される補強部材１２全体を、補強部材１２の両端部１３、１３がバンパーレインフォース１０の開口部１１よりも幅広に離間するように、略Ｕ字形状に形成し、湾曲部１５のＵ字形の中心軸線（半円筒形の中心軸線）が車体前後方向に延び、補強部材１２の両端部１３、１３が略水平方向に延びるように、補強部材１２の取付時の姿勢を定め、補強部材１２の両端部１３、１３をバンパーレインフォース１０の開口部１１より小さく撓ませて、バンパーレインフォース１０の開口部１１に挿入し、両端部１３、１３の弾性力により補強部材１２をバンパーレインフォース１０の開口部１１に装着したところに特徴がある。 The characteristics of the bumper reinforcement 10 of this embodiment will be described in more detail. The entire reinforcing member 12 mounted in the opening 11 at the end of the bumper reinforcement 10 is the same as the both ends 13 and 13 of the reinforcing member 12. The U-shaped central axis (semi-cylindrical central axis) of the curved portion 15 extends in the longitudinal direction of the vehicle body so as to be spaced apart wider than the opening 11 of the ten. The posture at the time of attachment of the reinforcing member 12 is determined so that the both end portions 13, 13 extend substantially in the horizontal direction, and the both end portions 13, 13 of the reinforcing member 12 are bent smaller than the opening portion 11 of the bumper reinforcement 10, It is inserted into the opening 11 of the reinforcement 10 and is characterized in that the reinforcing member 12 is attached to the opening 11 of the bumper reinforcement 10 by the elastic force of both end portions 13 and 13. A.

そして、補強部材１２の両端部１３、１３をバンパーレインフォース１０の開口部１１より小さく撓ませて、補強部材１２をバンパーレインフォース１０の開口部１１に挿入するので、補強部材１２の両端部には原型に復帰しようとする弾性力が発生し、バンパーレインフォース１０の端部に補強部材１２が固定される。 And since both ends 13 and 13 of reinforcing member 12 are bent smaller than opening 11 of bumper reinforcement 10, and reinforcing member 12 is inserted into opening 11 of bumper reinforcement 10, it is formed in both ends of reinforcing member 12. An elastic force is generated to return to the original shape, and the reinforcing member 12 is fixed to the end of the bumper reinforcement 10.

よって、補強部材１２を装着するために溶接やボルトの締結という作業が不要となり、部品点数が少なくなるので、コスト低下や組み立て工数の省力化が可能となる。また、補強部材１２は車体前後方向に延びているので、車体前後方向から加わる荷重に対して剛性が十分に確保されており、車体前後方向からの荷重が入力されたときでも、バンパーレインフォース１０の端部が容易に潰れたり、変形してしまうことが防止されている。 Therefore, the work of welding or bolt fastening is not required for mounting the reinforcing member 12, and the number of parts is reduced, so that the cost can be reduced and the man-hours for assembling can be saved. Further, since the reinforcing member 12 extends in the longitudinal direction of the vehicle body, sufficient rigidity is ensured with respect to the load applied from the longitudinal direction of the vehicle body, and even when a load from the longitudinal direction of the vehicle body is input, the bumper reinforcement 10 It is prevented that the edge part of this is easily crushed or deformed.

図３、図４は本発明の第２実施例にかかる自動車用バンパーレインフォースの主要部を示したものである。アルミニウム製からなるこのバンパーレインフォース２０には３層の角筒状開口部２０Ａ、２０Ｂ、２０Ｃが形成されており、バンパーレインフォース２０は、角筒状開口部２０Ａ、２０Ｂ、２０Ｃの仕切壁２１が水平に向けられて、角筒状開口部２０Ａ、２０Ｂ、２０Ｃが上下方向に三段に重ねられるように、自動車の前部に取り付けられる。上部の角筒状開口部２０Ａと、下部の角筒状開口部２０Ｃには、補強部材２２が装着される。 3 and 4 show the main part of a bumper reinforcement for automobiles according to a second embodiment of the present invention. The bumper reinforcement 20 made of aluminum is formed with three layers of rectangular cylindrical openings 20A, 20B, and 20C. The bumper reinforcement 20 has a partition wall 21 of the rectangular cylindrical openings 20A, 20B, and 20C. Is attached to the front of the automobile so that the rectangular cylindrical openings 20A, 20B, and 20C are stacked in three stages in the vertical direction. A reinforcing member 22 is attached to the upper rectangular tube opening 20A and the lower rectangular tube opening 20C.

補強部材２２は、図１に示す補強部材１２と同様に、全体がほぼ「Ｕ」字形状に湾曲してなるものであり、補強部材２２の両端部２３、２３は板状に形成されている。両端部２３、２３近傍には溝部２４が形成され、溝部２４の外側の端部が開口部２０Ａ、２０Ｃの縁部に掛止される掛止部とされる。 As with the reinforcing member 12 shown in FIG. 1, the reinforcing member 22 is generally curved in a “U” shape, and both end portions 23 and 23 of the reinforcing member 22 are formed in a plate shape. . A groove portion 24 is formed in the vicinity of both end portions 23, 23, and an outer end portion of the groove portion 24 serves as a hook portion that is hooked to the edge portion of the opening portions 20A, 20C.

また、バンパーレインフォース２０の縦壁部２０Ｖであって、上部の角筒状開口部２０Ａの形成部位と、下部の角筒状開口部２０Ｃの形成部位には、長穴２６がそれぞれ形成されている。長穴２６は補強部材２２の湾曲部２８の内側に位置するように形成されており、長穴２６にボルト２７が通される。補強部材２２は、長穴２６に対向する部位に形成された図示しないネジ穴にボルト２７の先端部を螺着させることで、角筒状開口部２０Ａ、２０Ｃから脱落不能に固定される。 Further, in the vertical wall portion 20V of the bumper reinforcement 20, elongated holes 26 are respectively formed in the formation portion of the upper rectangular tubular opening 20A and the formation portion of the lower rectangular tubular opening 20C. Yes. The long hole 26 is formed so as to be positioned inside the curved portion 28 of the reinforcing member 22, and a bolt 27 is passed through the long hole 26. The reinforcing member 22 is fixed so that it cannot be removed from the square cylindrical openings 20A and 20C by screwing the tip of the bolt 27 into a screw hole (not shown) formed in a portion facing the elongated hole 26.

このバンパーレインフォース２０によれば、上下に３段に形成された角筒状開口部２０Ａ、２０Ｂ、２０Ｃの仕切壁２１が水平に向けられ、角筒状開口部２０Ａと角筒状開口部２０Ｃに補強部材２２がそれぞれ装着され、補強部材２２の湾曲部２８の内側にボルト２７が通されて、ボルト２７が螺着されているので、車体前後方向からの荷重に対してバンパーレインフォース２０の端部の剛性が向上している。しかも、補強部材２２を角筒状開口部２０Ａと角筒状開口部２０Ｃにそれぞれ装着し、補強部材２２の湾曲部２８の内側にボルト２７を通して、ボルト２７を螺着しているので、部品の取付が簡単であり、部品点数も少なく低コスト且つ組立工数も少ないという利点がある。 According to the bumper reinforcement 20, the partition walls 21 of the square cylindrical openings 20A, 20B, and 20C formed in three stages up and down are horizontally directed, and the square cylindrical opening 20A and the square cylindrical opening 20C. Since the reinforcing members 22 are respectively mounted, and the bolts 27 are passed through the inside of the curved portions 28 of the reinforcing members 22 and the bolts 27 are screwed, the bumper reinforcement 20 is applied to the load in the longitudinal direction of the vehicle body. The rigidity of the end is improved. In addition, the reinforcing member 22 is attached to each of the square cylindrical opening 20A and the rectangular cylindrical opening 20C, and the bolt 27 is screwed through the inside of the curved portion 28 of the reinforcing member 22, so that the bolt 27 is screwed. There are advantages that the mounting is simple, the number of parts is small, the cost is low, and the number of assembly steps is also small.

図５、図６は本願の第３実施例のバンパーレインフォース３０を示す。アルミニウム製からなるこのバンパーレインフォース３０には上下二段の角筒状開口部３０Ａ、３０Ｂが形成されており、角筒状開口部３０Ａ、３０Ｂの仕切壁３１は水平に向けられている。上部の角筒状開口部３０Ａと、下部の角筒状開口部３０Ｂには補強部材３２が装着される。 5 and 6 show a bumper reinforcement 30 according to a third embodiment of the present application. The bumper reinforcement 30 made of aluminum is formed with two upper and lower square cylindrical openings 30A and 30B, and the partition walls 31 of the rectangular cylindrical openings 30A and 30B are oriented horizontally. A reinforcing member 32 is attached to the upper rectangular tube opening 30A and the lower rectangular tube opening 30B.

補強部材３２は、図１に示す補強部材１２を上下に連結したような構成を有し、全体がほぼ「Ｗ」字形状に湾曲してなるものであり、補強部材３２全体は板状に形成されている。両端部３３、３３の間の折り返し部分３４は仕切壁３１を挟み持つように形成されている。両端部３３、３３の近傍には溝部３５が形成され、溝部３５の外側の端部が開口部３０Ａ、３０Ｂの縁部に掛止される掛止部とされる。 The reinforcing member 32 has a configuration in which the reinforcing member 12 shown in FIG. 1 is connected vertically, and the entire reinforcing member 32 is curved in a “W” shape, and the entire reinforcing member 32 is formed in a plate shape. Has been. A folded portion 34 between both end portions 33 and 33 is formed so as to sandwich the partition wall 31. A groove portion 35 is formed in the vicinity of both end portions 33, 33, and an outer end portion of the groove portion 35 is a hooking portion that is hooked to the edge of the openings 30A, 30B.

バンパーレインフォース３０の縦壁部３０Ｖであって、上部の角筒状開口部３０Ａの形成部位と、下部の角筒状開口部３０Ｂの形成部位には、穴３６がそれぞれ形成されている。穴３６は補強部材３２の湾曲部３８の内側に位置するように形成されており、補強部材３２を装着した後に、穴３６に図示しないボルトを通し、ボルトの先端部を他方のネジ穴３７に螺着させることで、補強部材３２が角筒状開口部３０Ａ、３０Ｂに脱落不能に固定される。 Holes 36 are formed in the vertical wall portion 30V of the bumper reinforcement 30 in the formation portion of the upper rectangular tubular opening 30A and the formation portion of the lower rectangular tubular opening 30B, respectively. The hole 36 is formed so as to be positioned inside the curved portion 38 of the reinforcing member 32. After the reinforcing member 32 is attached, a bolt (not shown) is passed through the hole 36, and the tip of the bolt is inserted into the other screw hole 37. By screwing, the reinforcing member 32 is fixed to the square cylindrical openings 30A and 30B so as not to drop off.

このバンパーレインフォース３０によれば、上下二段に形成された角筒状開口部３０Ａ、３０Ｂの仕切壁３１が水平に向けられ、角筒状開口部３０Ａと角筒状開口部３０Ｂに補強部材３２が装着され、補強部材３２の折り返し部分３４が仕切板３１を挟持し、補強部材３２の湾曲部３８の内側にボルトが通されて、ボルトの先端部がネジ穴３７に螺着されているので、車体前後方向からの荷重に対してバンパーレインフォース３０の端部の剛性が向上し、しかも、部品の取付が簡単であり、部品点数も少なく低コスト且つ組立工数も少ないという利点がある。 According to the bumper reinforcement 30, the partition walls 31 of the square cylindrical openings 30A and 30B formed in two upper and lower stages are horizontally directed, and the reinforcing members are provided to the rectangular cylindrical openings 30A and the rectangular cylindrical openings 30B. 32, the folded portion 34 of the reinforcing member 32 sandwiches the partition plate 31, the bolt is passed inside the curved portion 38 of the reinforcing member 32, and the tip of the bolt is screwed into the screw hole 37. Therefore, there is an advantage that the rigidity of the end of the bumper reinforcement 30 is improved with respect to the load from the front-rear direction of the vehicle body, the mounting of the parts is simple, the number of parts is small, the cost is low, and the number of assembly steps is also small.

図７、図８は、本発明の第３実施例を示したものであり、バンパーレインフォース４０は矩形断面を有する角筒状のものであり、バンパーレインフォース４０の中央部に、鉄製若しくはステンレス製の補強部材４１が固着されている。補強部材４１はほぼ「Ｕ」字形状を有するものであり、バンパーレインフォース４０の外周面を保持している。補強部材４１は、バンパーレインフォース４０の湾曲部分４２の両側に、一対の保持板部４３、４３を備えており、この一対の保持板部４３、４３の間に、バンパーレインフォース４０の上面部及び下面部を保持するように形成されている。補強板部４１は、成形時に一対の保持板部４３、４３の間の離間距離がバンパーレインフォース４０の上面部と下面部との間の距離より小さくなるように成型され、バンパーレインフォース４０に装着するときには、補強板部４１の保持板部４３、４３を広げてバンパーレインフォース４０を挿入する。これによって、バンパーレインフォース４０の中央部に補強板部４１が固着される。なお、補強板部４１の前方部位にある湾曲部分４２はバンパーレインフォース４０の車体前方側に膨らんでおり、保持板部４３、４３の弾性力を強化している。 7 and 8 show a third embodiment of the present invention. The bumper reinforcement 40 has a rectangular tube shape having a rectangular cross section, and is made of iron or stainless steel at the center of the bumper reinforcement 40. A reinforcing member 41 made of metal is fixed. The reinforcing member 41 has a substantially “U” shape, and holds the outer peripheral surface of the bumper reinforcement 40. The reinforcing member 41 includes a pair of holding plate portions 43, 43 on both sides of the curved portion 42 of the bumper reinforcement 40, and the upper surface portion of the bumper reinforcement 40 is between the pair of holding plate portions 43, 43. And it is formed so that a lower-surface part may be hold | maintained. The reinforcing plate portion 41 is molded such that the distance between the pair of holding plate portions 43 and 43 is smaller than the distance between the upper surface portion and the lower surface portion of the bumper reinforcement 40 at the time of molding. When mounting, the holding plate portions 43 and 43 of the reinforcing plate portion 41 are expanded and the bumper reinforcement 40 is inserted. As a result, the reinforcing plate portion 41 is fixed to the central portion of the bumper reinforcement 40. The curved portion 42 at the front portion of the reinforcing plate portion 41 swells to the front side of the vehicle body of the bumper reinforcement 40, and strengthens the elastic force of the holding plate portions 43 and 43.

図９（ａ）（ｂ）は、本発明の第４実施例を示したものである。矩形断面を有する角筒状のバンパーレインフォース５０の中央部内部には補強部材５１が固着されている。補強部材５１は、両端部をほぼ「Ｕ」字形状に折り曲げた鉄製若しくはステンレス製の板材からなり、両端部５２、５２が外側に膨らんだ形状を有している。補強部材５１の成形時における両端部５２、５２の距離は、バンパーレインフォース５０の上下の内壁面の距離より大きく定められており、両端部５２、５２を狭めてバンパーレインフォース５０の矩形の角筒内に挿入する。従って、補強部材５１の両端部５２、５２は挿入時の撓みに対する反力によってバンパーレインフォース５０内に固着されている。 FIGS. 9A and 9B show a fourth embodiment of the present invention. A reinforcing member 51 is fixed inside the central portion of the rectangular bumper reinforcement 50 having a rectangular cross section. The reinforcing member 51 is made of an iron or stainless steel plate whose both ends are bent into a substantially “U” shape, and has both ends 52, 52 bulging outward. The distance between the end portions 52 and 52 at the time of molding the reinforcing member 51 is determined to be larger than the distance between the upper and lower inner wall surfaces of the bumper reinforcement 50, and the rectangular corners of the bumper reinforcement 50 are narrowed by narrowing the both ends 52 and 52. Insert into the cylinder. Therefore, both end portions 52 and 52 of the reinforcing member 51 are fixed in the bumper reinforcement 50 by reaction force against bending at the time of insertion.

図１０（ａ）（ｂ）は、図９（ａ）（ｂ）に示したバンパーレインフォース５０に補強部材５１を挿入した後に、プレス加工用の中子５４をバンパーレインフォース５０の両端部から挿入して、補強部材５１をバンパーレインフォース５０の所定の位置（中央部）に位置決めさせる。次に、プレス金型５５の間にバンパーレインフォース５０をおいて所定距離だけプレスし、中子５４を取り外すと、バンパーレインフォース５０の中央部両側が車体後方に後退するように折れ曲がり、補強部材５１がバンパーレインフォース５０の中央部に固着される。なお、補強部材５１はバンパーレインフォース５０の所定位置に複数個固着しても良い。 10 (a) and 10 (b), after the reinforcing member 51 is inserted into the bumper reinforcement 50 shown in FIGS. 9 (a) and 9 (b), the pressing cores 54 are inserted from both ends of the bumper reinforcement 50. By inserting, the reinforcing member 51 is positioned at a predetermined position (central portion) of the bumper reinforcement 50. Next, when the bumper reinforcement 50 is placed between the press dies 55 and pressed for a predetermined distance, and the core 54 is removed, both sides of the central portion of the bumper reinforcement 50 are bent so as to recede toward the rear of the vehicle body, and the reinforcing member 51 is fixed to the central portion of the bumper reinforcement 50. A plurality of reinforcing members 51 may be fixed to a predetermined position of the bumper reinforcement 50.

図１は本発明の実施例に係る自動車用バンパーレインフォースの主要構成を示す部分斜視図。FIG. 1 is a partial perspective view showing a main configuration of an automobile bumper reinforcement according to an embodiment of the present invention. 図２は図１のバンパーレインフォースの軸方向に沿った断面図。FIG. 2 is a cross-sectional view along the axial direction of the bumper reinforcement of FIG. 図３は本発明の第２実施例に係る自動車用バンパーレインフォースの主要構成を示す部分斜視図。FIG. 3 is a partial perspective view showing a main configuration of a bumper reinforcement for an automobile according to a second embodiment of the present invention. 図４は図３のバンパーレインフォースの軸方向に沿った断面図。4 is a cross-sectional view along the axial direction of the bumper reinforcement of FIG. 図５は本発明の第３実施例に係る自動車用バンパーレインフォースの主要構成を示す部分斜視図。FIG. 5 is a partial perspective view showing a main configuration of a bumper reinforcement for an automobile according to a third embodiment of the present invention. 図６は図５のバンパーレインフォースの軸方向に沿った断面図。6 is a cross-sectional view along the axial direction of the bumper reinforcement of FIG. 図７は本発明の第４実施例に係る自動車用バンパーレインフォースの主要構成を示す斜視図。FIG. 7 is a perspective view showing a main configuration of an automobile bumper reinforcement according to a fourth embodiment of the present invention. 図８は図７のバンパーレインフォースの直交方向に沿った断面図。FIG. 8 is a cross-sectional view along the orthogonal direction of the bumper reinforcement of FIG. （ａ）は本発明の第５実施例に係る自動車用バンパーレインフォースに補強部材を挿入する前の部分斜視図、（ｂ）はバンパーレインフォースに補強部材を挿入した後の部分断面図。(A) is a fragmentary perspective view before inserting a reinforcement member in the bumper reinforcement for motor vehicles based on 5th Example of this invention, (b) is a fragmentary sectional view after inserting a reinforcement member in a bumper reinforcement. （ａ）は補強部材を内部に装填したバンパーレインフォースをプレス金型に装着した状態のプレス前の図、（ｂ）はバンパーレインフォースをプレスしている状態の図。(A) is the figure before the press of the state which mounted | worn the bumper reinforcement which loaded the reinforcement member inside in the press metal mold | die, (b) is the figure of the state which is pressing the bumper reinforcement. 図１１は従来のバンパーレインフォースの端部に補強部材を溶接により固着した状態の部分斜視図。FIG. 11 is a partial perspective view showing a state in which a reinforcing member is fixed to an end of a conventional bumper reinforcement by welding. 図１２は補強部材を溶接により固着した従来のバンパーレインフォースの斜視図。FIG. 12 is a perspective view of a conventional bumper reinforcement in which a reinforcing member is fixed by welding. 図１３は補強部材をボルトにより固着した従来のバンパーレインフォースの斜視図。FIG. 13 is a perspective view of a conventional bumper reinforcement in which a reinforcing member is fixed with a bolt.

符号の説明Explanation of symbols

１０バンパーレインフォース
１１開口部
１２補強部材
１３補強部材の両端部
１４溝部
１５湾曲部
１６ボルト穴 DESCRIPTION OF SYMBOLS 10 Bumper reinforcement 11 Opening part 12 Reinforcement member 13 Both ends of reinforcement member 14 Groove part 15 Curved part 16 Bolt hole

Claims

バンパーレインフォースの内部若しくは外部の何れかに補強部材を撓ませて装着し、該補強部材の撓みに対する反力により前記バンパーレインフォースに前記補強部材を固定したことを特徴とする自動車用バンパーレインフォース。 A bumper reinforcement for automobiles, wherein a reinforcement member is bent and attached to either the inside or the outside of the bumper reinforcement, and the reinforcement member is fixed to the bumper reinforcement by a reaction force against the bending of the reinforcement member. .

バンパーレインフォースの端部の開口部に、全体が略Ｕ字形状に形成されて板状の両端部が前記開口部よりも幅広に離間した補強部材を、前記板状の両端部が略水平方向に向けられるように姿勢を定めて、前記両端部を前記開口部より小さく撓ませて前記開口部内に前記補強部材の湾曲部分を挿入し、前記両端部の弾性力により前記補強部材をバンパーレインフォースの開口部内に固着した自動車用バンパーレインフォースであって、前記補強部材の両端部近傍に補強部材の幅方向に延びる溝部を形成し、この溝部の外側部分を、前記補強部材を前記バンパーレインフォースに取り付けるときの位置決め部としたことを特徴とする自動車用バンパーレインフォース。 In the opening at the end of the bumper reinforcement, there is a reinforcing member that is formed in a substantially U shape and has both plate-like ends spaced apart wider than the opening, and both the plate-like ends are substantially horizontal. The both ends are bent to be smaller than the opening, the curved portion of the reinforcing member is inserted into the opening, and the reinforcing member is bumper reinforcement by the elastic force of the both ends. A bumper reinforcement for automobiles fixed in an opening of the reinforcing member, wherein a groove portion extending in the width direction of the reinforcing member is formed in the vicinity of both end portions of the reinforcing member, and the reinforcing member is connected to the bumper reinforcement for the outer portion of the groove portion. A bumper reinforcement for automobiles, characterized in that it is used as a positioning part when attached to a vehicle.

請求項２の自動車のバンパーレインフォースにおいて、
前記バンパーレインフォースの側壁に、前記補強部材の湾曲部分の内側を通るボルトを挿通し、前記補強部材の脱落防止手段としたことを特徴とする自動車用バンパーレインフォース。
In the bumper reinforcement of the automobile according to claim 2,
A bumper reinforcement for automobiles, wherein a bolt passing through the inside of the curved portion of the reinforcing member is inserted into a side wall of the bumper reinforcement to prevent the reinforcing member from falling off.