JP3861111B2 - Assembly structure of sheet metal parts - Google Patents

Assembly structure of sheet metal parts Download PDF

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Publication number
JP3861111B2
JP3861111B2 JP16825198A JP16825198A JP3861111B2 JP 3861111 B2 JP3861111 B2 JP 3861111B2 JP 16825198 A JP16825198 A JP 16825198A JP 16825198 A JP16825198 A JP 16825198A JP 3861111 B2 JP3861111 B2 JP 3861111B2
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Japan
Prior art keywords
sheet metal
metal part
bracket
mounting seat
seat surface
Prior art date
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Expired - Fee Related
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JP16825198A
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Japanese (ja)
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JP2000002212A (en
Inventor
誠 岸野
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Hino Motors Ltd
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Hino Motors Ltd
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Filing date
Publication date
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Priority to JP16825198A priority Critical patent/JP3861111B2/en
Publication of JP2000002212A publication Critical patent/JP2000002212A/en
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Publication of JP3861111B2 publication Critical patent/JP3861111B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は、2枚の板金部品が接合される背切り継手部分に、取り付け座面を有するブラケットを取り付ける板金部品の組付構造に関するものである。
【0002】
【従来の技術】
従来より、2枚の板金部品を接合する場合、図6に示すように、一方の板金部品1の端縁部に段差部1aを形成し、他方の板金部品2をこの段差部1aの内側に組み入れて、両板金部品1,2面が同一平面上になるようにし、スポット溶接等により固着させる、背切り継手と呼ばれる接合方法が用いられている。
【0003】
この背切り継手部分に、ブラケット、例えば、板金部材を台形状に曲げて両端部に取り付け座面を有するように形成したものを取り付ける場合には、図7に示すように、そのブラケット3の取り付け座面3aの一部を、前記段差部1a(図6参照)の形状に合わせて絞り型で成型し、これを段差部1aの表面に組み付けて、×印位置をスポット溶接して接合するという方法を用いることができる。
【0004】
あるいは、前述の如くブラケット3の取り付け座面3aの一部を絞り型で成型せずに、図8に示すように、板金部品1の段差部1aをブラケット3の取り付け幅wだけ部分的に切除して取り付け部1cを形成し、この取り付け部1cにブラケット3を填め込んで、所定位置をスポット溶接し、ブラケット3を板金部品1に固定する等の方法もある。
【0005】
【発明が解決しようとする課題】
しかしながら、従来の上記板金部品1,2の組付構造のうち、ブラケット3の取り付け座面3aの一部を絞り型で成型する方法においては、付加されたその成型工程によってコスト高になるという問題があった。
【0006】
また、板金部品1の段差部1aを部分的に切除する方法においては、図8に示すように、切除して形成された取り付け部1cの幅w内で、ブラケット3の取り付け座面3aが板金部品2に当接する仮想線部以外の部分において、スポット溶接ができない範囲nが存在するため、十分な接合強度が得られないという不具合があり、且つ、取り付け部1cのために、板金部品1,2間に大きな隙間Sが生じることになり、シール性が低下する。特に、板金部品1,2の前記背切り継手部分をシールする必要がある場合に、そうした必要を満たせないという問題があった。
【0007】
本発明は、上述した従来の問題点を解消して、2枚の板金部品の背切り継手部分において、十分な接合強度とシール性が得られる、低コストで簡単な構成の板金部品の組付構造を提供することを目的としている。
【0008】
【課題を解決するための手段】
本発明は、第1の板金部品の端縁部に背切り継手用の段差部を設け、該段差部の内側に第2の板金部品を填め込んで、両板金部品面が同一平面上になるように接合すると共に、前記段差部に、板金部材を凸状に曲げて両端部に取り付け座面を有するように形成したブラケットを、各取り付け座面が段差部上に重合するよう取り付ける板金部品の組付構造において、
前記第1の板金部品の段差部の、前記ブラケットの取り付け座面が取り付けられる部分に、取り付け座面に対応する形状の切欠き部を設けたことを特徴とする板金部品の組付構造にかかるものである。
【0009】
前記板金部品の組付構造においては、ブラケットの凸状となる頂部所要位置に、第1の板金部品の段差部と第2の板金部品とを溶接するための溶接孔を設けることもできる。
【0010】
上記手段によれば、以下のような作用が得られる。
【0011】
第1の板金部品の切欠き部にブラケットの取り付け座面を填め込み、両者を接合すると、切欠き部は、ブラケットの取り付け座面の一部によってほとんど塞がれるようになるため、あたかも段差部には切欠き部が無く、連続しているように見なすことができ、ブラケットの取り付け座面と段差部とを一つの同じ部材と見なすことができ、更に、第1の板金部品の段差部の内側に第2の板金部品を填め込んで、第1の板金部品と第2の板金部品を接合する際には、ブラケットの取り付け座面と第2の板金部品が当接している部分も接合することが可能となり、接合強度が低下することはなく、また、切欠き部においては、第2の板金部品と第1の板金部品との隙間も、ブラケットの取り付け座面により、ほとんど塞がるため、シール性の低下が抑えられる。
【0012】
また、ブラケットの凸状となる頂部所要位置に、第1の板金部品の段差部と第2の板金部品とを溶接するための溶接孔を設けると、該溶接孔を介して第1の板金部品1のブラケットで覆われた段差部と第2の板金部品とを溶接することが可能となり、第1の板金部品と第2の板金部品の接合強度がより高められる。
【0013】
【発明の実施の形態】
以下、本発明の実施の形態を図示例と共に説明する。
【0014】
図1において、第1の板金部品である板金部品1の端縁部に背切り継手用の段差部1aが形成されて、この段差部1aの内側に第2の板金部品である板金部品2の端縁部が填め込まれ、両板金部品1,2面が同一平面上になるように、スポット溶接により接合されて背切り継手を構成している。
【0015】
一方、ブラケット3は、板金部材を凸状に曲げ、本図示例では台形形状に曲げて、両端部に取り付け座面3aを有するように形成したもので、ブラケット3の凸状となる頂部には取り付け孔3bが設けられ、その裏面側には図示していないナット等が溶接されている。
【0016】
板金部品1の段差部1aには、ブラケット3の取り付け座面3aが対向する部分、即ち、取り付け座面3aの当接面に対応する部分が切除されて、切欠き部1bが形成されており、図2に示すように、この切欠き部1bに、ブラケット3の取り付け座面3aが填め込まれ、板金部品1と板金部品2に当接している部分の×印において、それぞれスポット溶接されることにより接合されている。
【0017】
上記板金部品1,2の組付構造の製作工程について説明する。図3に示すように、先ず、板金部品1の切欠き部1bにブラケット3の取り付け座面3aを填め込み、取り付け座面3aが板金部品1に当接している部分の所要位置、例えば×印においてスポット溶接する。この時、板金部品1に対してブラケット3は、強固に接合することができ、しかも、切欠き部1bは、ブラケット3の斜線部で示す部分によってほとんど塞がれるようにすることができるため、あたかも段差部1aには切欠き部1bが無く、連続しているように見なすことができ、ブラケット3の斜線部と段差部1aとを一つの同じ部材と見なすことができる。
【0018】
その後、図2に示すように、板金部品1の段差部1aの内側に板金部品2を填め込んで、段差部1aの所定位置にスポット溶接を行い、板金部品1と板金部品2を接合する。ブラケット3の取り付け座面3aと板金部品2が当接している部分も×印においてスポット溶接を行うが、これにより、間接的に板金部品2と板金部品1とが結合されるので、接合強度が低下することはない。
【0019】
同時に、切欠き部1bにおいては、図4に示すように、板金部品2と板金部品1との隙間Sも、ブラケット3の取り付け座面3aが矢印部分においてスポット溶接されることにより、ほとんど塞がるため、シール性の低下が抑えられる。
【0020】
尚、ブラケット3に取り付け孔3bを設ける必要がない場合には、スポット溶接のためのチップを挿入するための取り付け孔3bのような溶接孔を、ブラケット3の所定位置に、あえて形成するようにしても良く、このようにすれば、図5に示すように、前記溶接孔(図5中の3bに相当)を介して図示していない溶接用のチップを挿入し、矢印のように板金部品1の段差部1aにスポット溶接を行い、板金部品1と板金部品2の接合強度を補強することができる。
【0021】
【発明の効果】
以上説明したように、本発明の請求項1記載の板金部品の組付構造によれば、第1の板金部品の段差部の、ブラケットの取り付け座面が取り付けられる部分に、取り付け座面に対応する形状の切欠き部が形成されており、この切欠き部にブラケットの取り付け座面を填め込んで第1の板金部品に接合してから、前記第2の板金部品を接合するので、第1の板金部品とブラケットの接合強度が高まり、第1の板金部品の段差部にあたかも切欠き部が無く、連続しているように見なすことができ、且つ、填め込んだ取り付け座面と段差部とを一つの同じ部材と見なすことができ、第1の板金部品と第2の板金部品の接合強度が低下するのを防止することができる。
【0022】
しかも、第1の板金部品の切欠き部における第2の板金部品との隙間はブラケットでほとんど塞がれるので、シール性の低下を極力抑えることができ、これらの効果を、低コストで簡単な構成にて実現することができる。
【0023】
又、本発明の請求項2記載の板金部品の組付構造によれば、ブラケットの溶接孔を介して、第1の板金部品のブラケットで覆われた段差部と第2の板金部品とを溶接することができ、第1の板金部品と第2の板金部品との接合強度をより高めることができる。
【図面の簡単な説明】
【図1】本発明を実施する形態の一例を示す板金部品の組付構造の一部分解斜視図である。
【図2】本発明を実施する形態の一例を示す板金部品の組付構造の斜視図である。
【図3】第1の板金部品とブラケットを接合した状態を示す斜視図である。
【図4】図2のIV−IV断面を示す断面図である。
【図5】図2のV−V断面を示す断面図である。
【図6】従来の背切り継手による板金部品の接合状態を示す側断面図である。
【図7】従来のブラケットの取り付け座面を絞り型により成型した状態を示す斜視図である。
【図8】従来の板金部品の背切り継手用の段差部を部分的に切除した接合状態を示す斜視図である。
【符号の説明】
1 第1の板金部品
1a 段差部
1b 切欠き部
2 第2の板金部品
3 ブラケット
3a 取り付け座面
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure for assembling a sheet metal part in which a bracket having a mounting seat surface is attached to a back joint portion where two sheet metal parts are joined.
[0002]
[Prior art]
Conventionally, when two sheet metal parts are joined, as shown in FIG. 6, a stepped portion 1a is formed at the edge of one sheet metal component 1, and the other sheet metal component 2 is placed inside the stepped portion 1a. A joining method called a back cut joint is used in which both the sheet metal parts 1 and 2 are placed on the same plane and fixed by spot welding or the like.
[0003]
When attaching a bracket, for example, a sheet metal member bent to a trapezoidal shape and having mounting seating surfaces at both ends, the bracket 3 is attached as shown in FIG. A part of the seating surface 3a is molded with a drawing die in accordance with the shape of the stepped portion 1a (see FIG. 6), and this is assembled to the surface of the stepped portion 1a and joined by spot welding at the X mark position. The method can be used.
[0004]
Alternatively, as shown in FIG. 8, the stepped portion 1a of the sheet metal part 1 is partially cut away by the mounting width w of the bracket 3, as shown in FIG. Then, there is a method of forming the attachment portion 1 c, inserting the bracket 3 into the attachment portion 1 c, spot welding at a predetermined position, and fixing the bracket 3 to the sheet metal part 1.
[0005]
[Problems to be solved by the invention]
However, in the conventional method for assembling the sheet metal parts 1 and 2, in the method of molding a part of the mounting seat surface 3a of the bracket 3 with a drawing die, there is a problem that the cost is increased due to the added molding process. was there.
[0006]
In the method of partially cutting the stepped portion 1a of the sheet metal part 1, as shown in FIG. 8, the mounting seat surface 3a of the bracket 3 is a sheet metal within the width w of the mounting portion 1c formed by cutting. Since there is a range n in which spot welding cannot be performed in a portion other than the imaginary line portion in contact with the component 2, there is a problem that a sufficient joint strength cannot be obtained, and the sheet metal component 1, for the mounting portion 1c. A large gap S is generated between the two, and the sealing performance is lowered. Particularly, when it is necessary to seal the back joint portion of the sheet metal parts 1 and 2, there is a problem that such a need cannot be satisfied.
[0007]
The present invention eliminates the above-mentioned conventional problems and assembles a sheet metal part having a simple structure at a low cost, which can provide sufficient joining strength and sealing performance at the back joint portion of two sheet metal parts. Its purpose is to provide a structure.
[0008]
[Means for Solving the Problems]
In the present invention, a step part for a back joint is provided at the edge of the first sheet metal part, and the second sheet metal part is fitted inside the step part so that both sheet metal part surfaces are on the same plane. Of the sheet metal part to be attached so that each mounting seat surface is superimposed on the stepped portion. In the assembly structure,
The sheet metal part assembly structure according to claim 1, wherein a notch part having a shape corresponding to the mounting seat surface is provided in a portion of the step portion of the first sheet metal part to which the mounting seat surface of the bracket is attached. Is.
[0009]
In the assembly structure of the sheet metal parts, a welding hole for welding the stepped part of the first sheet metal part and the second sheet metal part can be provided at a required position of the top portion of the bracket that is convex.
[0010]
According to the above means, the following operation can be obtained.
[0011]
When the mounting seat surface of the bracket is inserted into the notch portion of the first sheet metal part and joined together, the notch portion is almost blocked by a part of the mounting seat surface of the bracket. Can be regarded as being continuous, the bracket mounting seat surface and the stepped portion can be regarded as one and the same member, and the stepped portion of the first sheet metal part When the first sheet metal part and the second sheet metal part are joined by inserting the second sheet metal part inside, the part where the mounting seating surface of the bracket and the second sheet metal part are in contact is also joined. In the notch, the gap between the second sheet metal part and the first sheet metal part is almost completely blocked by the mounting seating surface of the bracket. Sexual decline Erareru.
[0012]
In addition, when a welding hole for welding the step portion of the first sheet metal part and the second sheet metal part is provided at a required position of the top portion of the bracket, the first sheet metal part is provided via the welding hole. It is possible to weld the stepped portion covered with the one bracket and the second sheet metal part, and the bonding strength between the first sheet metal part and the second sheet metal part is further increased.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0014]
In FIG. 1, a stepped portion 1 a for a back joint is formed at an edge portion of a sheet metal component 1 that is a first sheet metal component, and a sheet metal component 2 that is a second sheet metal component is formed inside the stepped portion 1 a. The back edge joint is constituted by being joined by spot welding so that the end edge portion is inserted and both the sheet metal parts 1 and 2 are on the same plane.
[0015]
On the other hand, the bracket 3 is formed by bending a sheet metal member into a convex shape, bending in a trapezoidal shape in the illustrated example, and having mounting seating surfaces 3a at both ends. A mounting hole 3b is provided, and a nut or the like (not shown) is welded to the back side thereof.
[0016]
In the stepped portion 1a of the sheet metal part 1, a portion where the mounting seat surface 3a of the bracket 3 faces, that is, a portion corresponding to the contact surface of the mounting seat surface 3a is cut out to form a notch portion 1b. As shown in FIG. 2, the mounting seating surface 3a of the bracket 3 is inserted into the notch 1b, and spot welding is performed at each of the portions X in contact with the sheet metal part 1 and the sheet metal part 2. Are joined.
[0017]
A manufacturing process of the assembly structure of the sheet metal parts 1 and 2 will be described. As shown in FIG. 3, first, the mounting seat surface 3a of the bracket 3 is fitted into the notch 1b of the sheet metal component 1, and the required position of the portion where the mounting seat surface 3a is in contact with the sheet metal component 1, for example, x mark. Spot welding. At this time, the bracket 3 can be firmly joined to the sheet metal part 1, and the notch 1 b can be almost blocked by the hatched portion of the bracket 3. The stepped portion 1a has no notch portion 1b and can be regarded as continuous, and the hatched portion of the bracket 3 and the stepped portion 1a can be regarded as one and the same member.
[0018]
Thereafter, as shown in FIG. 2, the sheet metal part 2 is fitted inside the step part 1 a of the sheet metal part 1, and spot welding is performed at a predetermined position of the step part 1 a to join the sheet metal part 1 and the sheet metal part 2. The portion where the mounting seat surface 3a of the bracket 3 is in contact with the sheet metal part 2 is also spot-welded at the mark x. This indirectly couples the sheet metal part 2 and the sheet metal part 1, so that the bonding strength is high. There is no decline.
[0019]
At the same time, in the notch 1b, as shown in FIG. 4, the gap S between the sheet metal part 2 and the sheet metal part 1 is almost blocked by spot welding of the mounting seat surface 3a of the bracket 3 at the arrow portion. , Deterioration of sealing performance is suppressed.
[0020]
When it is not necessary to provide the mounting hole 3b in the bracket 3, a welding hole such as the mounting hole 3b for inserting a chip for spot welding is formed at a predetermined position of the bracket 3. In this way, as shown in FIG. 5, a welding tip (not shown) is inserted through the welding hole (corresponding to 3b in FIG. 5), and a sheet metal part as shown by an arrow. It is possible to reinforce the bonding strength between the sheet metal part 1 and the sheet metal part 2 by performing spot welding on one stepped portion 1a.
[0021]
【The invention's effect】
As described above, according to the structure for assembling a sheet metal part according to claim 1 of the present invention, the step of the first sheet metal part corresponds to the mounting seat surface on the portion where the mounting seat surface of the bracket is mounted. A notch portion having a shape to be formed is formed, and the mounting surface of the bracket is fitted into the notch portion and joined to the first sheet metal component, and then the second sheet metal component is joined. The bonding strength between the sheet metal part and the bracket is increased, the step part of the first sheet metal part has no notch and can be regarded as being continuous, and the attached mounting seat surface and the step part are Can be regarded as one and the same member, and it is possible to prevent the bonding strength between the first sheet metal part and the second sheet metal part from being lowered.
[0022]
Moreover, since the gap between the first sheet metal part and the second sheet metal part at the notch of the first sheet metal part is almost blocked by the bracket, it is possible to suppress the deterioration of the sealing performance as much as possible, and these effects can be easily achieved at low cost. It can be realized by a configuration.
[0023]
According to the assembling structure of the sheet metal part according to claim 2 of the present invention, the step part covered with the bracket of the first sheet metal part and the second sheet metal part are welded through the welding hole of the bracket. It is possible to increase the bonding strength between the first sheet metal part and the second sheet metal part.
[Brief description of the drawings]
FIG. 1 is a partially exploded perspective view of an assembling structure of sheet metal parts showing an example of an embodiment for carrying out the present invention.
FIG. 2 is a perspective view of an assembly structure of sheet metal parts showing an example of an embodiment for carrying out the present invention.
FIG. 3 is a perspective view showing a state in which a first sheet metal part and a bracket are joined together.
4 is a cross-sectional view showing a cross section taken along the line IV-IV in FIG. 2;
5 is a cross-sectional view showing a VV cross section of FIG. 2. FIG.
FIG. 6 is a side sectional view showing a joining state of a sheet metal part by a conventional back cut joint.
FIG. 7 is a perspective view showing a state in which a mounting seat surface of a conventional bracket is molded by a drawing die.
FIG. 8 is a perspective view showing a joined state in which a step portion for a back joint of a conventional sheet metal part is partially cut away.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 1st sheet metal component 1a Step part 1b Notch part 2 2nd sheet metal part 3 Bracket 3a Mounting seat surface

Claims (2)

第1の板金部品の端縁部に背切り継手用の段差部を設け、該段差部の内側に第2の板金部品を填め込んで、両板金部品面が同一平面上になるように接合すると共に、前記段差部に、板金部材を凸状に曲げて両端部に取り付け座面を有するように形成したブラケットを、各取り付け座面が段差部上に重合するよう取り付ける板金部品の組付構造において、
前記第1の板金部品の段差部の、前記ブラケットの取り付け座面が取り付けられる部分に、取り付け座面に対応する形状の切欠き部を設けたことを特徴とする板金部品の組付構造。
A step portion for a back-cut joint is provided at an edge portion of the first sheet metal part, and the second sheet metal part is fitted inside the step part so that the surfaces of both the sheet metal parts are on the same plane. In addition, in the assembling structure of the sheet metal part, the bracket formed so as to have the mounting seat surface at both ends by bending the sheet metal member in a convex shape on the stepped portion so that each mounting seat surface is superimposed on the stepped portion. ,
A structure for assembling a sheet metal part, wherein a notch part having a shape corresponding to the mounting seat surface is provided at a portion of the step portion of the first sheet metal part where the mounting seat surface of the bracket is attached.
ブラケットの凸状となる頂部所要位置に、第1の板金部品の段差部と第2の板金部品とを溶接するための溶接孔を設けた請求項1記載の板金部品の組付構造。The assembly structure of the sheet metal part according to claim 1, wherein a welding hole for welding the step part of the first sheet metal part and the second sheet metal part is provided at a required position of the top portion which is a convex shape of the bracket.
JP16825198A 1998-06-16 1998-06-16 Assembly structure of sheet metal parts Expired - Fee Related JP3861111B2 (en)

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