JP4669706B2 - Self-drilling rivet and plate fastening structure using the same - Google Patents

Self-drilling rivet and plate fastening structure using the same Download PDF

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JP4669706B2
JP4669706B2 JP2005037268A JP2005037268A JP4669706B2 JP 4669706 B2 JP4669706 B2 JP 4669706B2 JP 2005037268 A JP2005037268 A JP 2005037268A JP 2005037268 A JP2005037268 A JP 2005037268A JP 4669706 B2 JP4669706 B2 JP 4669706B2
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shaft
shaft portion
rivet
tip
plate member
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JP2006226302A (en
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彰 鎌田
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Lobtex Co Ltd
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Lobtex Co Ltd
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Priority to JP2005037268A priority Critical patent/JP4669706B2/en
Priority to PCT/JP2006/302435 priority patent/WO2006087984A1/en
Priority to TW095105035A priority patent/TWI369454B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/04—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of riveting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/02—Riveting procedures
    • B21J15/025—Setting self-piercing rivets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/36—Rivet sets, i.e. tools for forming heads; Mandrels for expanding parts of hollow rivets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/04—Rivets; Spigots or the like fastened by riveting
    • F16B19/06—Solid rivets made in one piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/04—Rivets; Spigots or the like fastened by riveting
    • F16B19/08—Hollow rivets; Multi-part rivets
    • F16B19/086—Self-piercing rivets

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insertion Pins And Rivets (AREA)
  • Connection Of Plates (AREA)

Description

本発明は、硬鋼板等、硬い材質の板材を締結するために使用する自己穿孔型リベット及びこれによる板材の締結構造に関する。   The present invention relates to a self-piercing rivet used for fastening a hard plate material such as a hard steel plate, and a plate material fastening structure using the rivet.

従来、自動車等の車体に適用される自己穿孔型リベット（以下、単に「リベット」という）としては、特許文献１〜３に示すものが公知である。この種のリベットは、図１１（イ）に示す如く、頭部２’と、該頭部２’の下面より延びて軸孔（空洞）３ａ’を有する軸部３’とで構成される。そして、このリベット１’による板材Ｐ１’，Ｐ２’の締結に際しては、板材Ｐ１’，Ｐ２’をカシメ装置１００’のダイス１０１’上に支持した後、同図（ロ）に示す如く、ポンチ１０２’によって支持されたリベット１’を下降させ、その軸部３’から板材Ｐ１’，Ｐ２’に所定の圧力で打ち込む（同図（ハ））。すると、同図（ニ）に示す如く、軸部３’の環状部分によって板材Ｐ１’が剪断されると共に、該環状部分がダイス１０１’の凸部１０１ｂ’の形状に倣ってカールして拡開し、板材Ｐ１’，Ｐ２’が締結される。
特開平９−３１７７３０号 特開２００１−１１６０３０号 特開２００１−３０４２１４号 Conventionally, as self-drilling rivets (hereinafter simply referred to as “rivets”) applied to a vehicle body such as an automobile, those shown in Patent Documents 1 to 3 are known. As shown in FIG. 11 (a), this type of rivet includes a head portion 2 ′ and a shaft portion 3 ′ extending from the lower surface of the head portion 2 ′ and having a shaft hole (cavity) 3a ′. When the plate materials P1 ′ and P2 ′ are fastened by the rivet 1 ′, the plate materials P1 ′ and P2 ′ are supported on the die 101 ′ of the caulking device 100 ′, and then, as shown in FIG. The rivet 1 'supported by' is lowered and driven into the plate members P1 'and P2' from the shaft portion 3 'with a predetermined pressure ((c) in the figure). Then, as shown in FIG. 4 (d), the plate material P1 ′ is sheared by the annular portion of the shaft portion 3 ′, and the annular portion curls and expands following the shape of the convex portion 101b ′ of the die 101 ′. And plate material P1 ', P2' is fastened.
JP-A-9-317730 JP 2001-1116030 A JP 2001-304214 A

しかしながら、この種のリベットは、アルミニウム合金板、軟鋼板といった軟らかい材質の板材を締結するものであって、アルミニウム合金板、軟鋼板よりも材質の硬い金属板、例えば硬鋼板に対しては適用することができない。というのも、軸部３’の環状部分は硬鋼板との関係では剛性が低く、リベット１’を打ち込むと、硬鋼板を剪断できないばかりか、環状部分が内側に折れ曲がったり軸方向に圧縮されてしまい、締結作用が生じる程度にまで適切に拡開してくれないからである。   However, this type of rivet is used for fastening a soft plate material such as an aluminum alloy plate or a mild steel plate, and is applicable to a metal plate that is harder than the aluminum alloy plate or the mild steel plate, such as a hard steel plate. I can't. This is because the annular portion of the shaft portion 3 ′ has low rigidity in relation to the hard steel plate. When the rivet 1 ′ is driven, the hard steel plate cannot be sheared, and the annular portion is bent inward or compressed in the axial direction. In other words, it does not expand appropriately to such an extent that a fastening action occurs.

そこで、本発明は、上記問題に鑑みてなされたもので、硬鋼板等、硬い材質の板材をも締結することができる自己穿孔型リベット及びこれによる板材の締結構造を提供することを課題とする。   Then, this invention is made | formed in view of the said problem, and makes it a subject to provide the self-drilling type rivet which can also fasten hard board | plate materials, such as a hard steel plate, and the fastening structure of the board | plate material by this. .

従来のリベットは、打ち込みに伴う軸部の拡開度が大きくて締結作用が高くなるよう、できるだけ大径で深い軸孔を形成していた。そのため、環状部分は硬鋼板等、硬い材質の板材との関係では脆弱となり、これが硬い材質の板材に対して適用できない理由となっていた。   In the conventional rivet, a shaft hole having a diameter as large as possible is formed so as to increase the opening degree of the shaft portion with driving and increase the fastening action. For this reason, the annular portion becomes fragile in relation to a hard plate material such as a hard steel plate, and this is the reason why it cannot be applied to a hard plate material.

これに対し、本発明者は、板材を締結するための新たな原理を考察し、これを知見するに至った。それは、打ち込みに伴って剪断された表側の板材の当該剪断部分を板材の締結に利用しようとするものである。即ち、その剪断部分が圧縮によって拡張し、且つ軸部の先端部に固着して一体化すれば、軸部の先端部が膨径化して板材が締結されるという原理である。   On the other hand, the inventor considered a new principle for fastening the plate material and came to know this. That is, the sheared portion of the front-side plate material that has been sheared with driving is intended to be used for fastening the plate material. That is, the principle is that if the sheared portion is expanded by compression and is fixed to and integrated with the tip portion of the shaft portion, the tip portion of the shaft portion expands and the plate material is fastened.

これを実現するものとして本発明者が鋭意研究を重ねた結果、（１）複数の重ね合わされた板材を締結するため、表側の板材に接合する頭部と、該頭部の下面より延びて、表側の板材を剪断する軸部とを備え、前記表側の板材の剪断部分が軸部の先端部と裏側の板材の表面との間で圧縮されて軸部の先端部を包み込むように軸部と一体化することによって軸部の先端部を膨径化させるため、軸部に軸孔が形成されないか、あるいは軸部に形成される軸孔の有効深さが軸部の長さの４４％以下であることを特徴とする自己穿孔型リベット、（２）複数の重ね合わされた板材を締結するため、表側の板材に接合する頭部と、該頭部の下面より延びて、表側の板材を剪断する軸部とを備え、前記表側の板材の剪断部分が軸部の先端部と裏側の板材の表面との間で圧縮されて軸部の先端部を包み込むように軸部と一体化することによって軸部の先端部を膨径化させるため、軸部に軸孔が形成されないか、あるいは軸部に形成される軸孔の内径が軸部の呼び径の６０％以下であって且つ有効深さが軸部の長さの４４％以下であることを特徴とする自己穿孔型リベット、（３）複数の重ね合わされた板材を締結するため、表側の板材に接合する頭部と、該頭部の下面より延びて、表側の板材を剪断する軸部とを備え、前記表側の板材の剪断部分が軸部の先端部と裏側の板材の表面との間で圧縮されて軸部の先端部を包み込むように軸部と一体化することによって軸部の先端部を膨径化させるため、軸部に軸孔が形成されないか、あるいは軸部に形成される軸孔の内径が軸部の呼び径の５０％以下であって且つ有効深さが軸部の長さの４４％以下であることを特徴とする自己穿孔型リベット、（４）複数の重ね合わされた板材を締結するため、表側の板材に接合する頭部と、該頭部の下面より延びて、表側の板材を剪断する軸部とを備え、前記表側の板材の剪断部分が軸部の先端部と裏側の板材の表面との間で圧縮されて軸部の先端部を包み込むように軸部と一体化することによって軸部の先端部を膨径化させるため、軸部に軸孔が形成されないか、あるいは軸部に形成される軸孔の内径が軸部の呼び径の６０％以下であって且つ有効深さが軸部の長さの４４％以下であることを特徴とする自己穿孔型リベット、を発明するに至った。
As a result of the inventor's earnest research to achieve this, (1) in order to fasten a plurality of stacked plate members, the head portion joined to the front plate member, extending from the lower surface of the head portion , A shaft portion that shears the front plate member, and the shear portion of the front plate member is compressed between the tip portion of the shaft portion and the surface of the plate member on the back side so as to wrap the tip portion of the shaft portion, In order to increase the diameter of the tip of the shaft portion by integrating, the shaft hole is not formed in the shaft portion, or the effective depth of the shaft hole formed in the shaft portion is 44% or less of the length of the shaft portion. (2) In order to fasten a plurality of superposed plate members, a head portion joined to the front plate member and a lower surface of the head portion are extended to shear the front plate member. to a shaft portion, a shear portion of the front side of the plate material of the shaft tip portion and the rear side of the plate In order to upset the distal portion of the shaft portion by integrating the shaft portion as the compressed wrap the tip of the shaft portion between the surfaces, or axial hole in the shaft portion is not formed, or the shaft portion A self-drilling rivet characterized in that the inner diameter of the shaft hole formed in the shaft portion is 60% or less of the nominal diameter of the shaft portion and the effective depth is 44% or less of the length of the shaft portion; (3) In order to fasten a plurality of stacked plate members, a head portion joined to the front plate member, and a shaft portion extending from the lower surface of the head portion to shear the front plate member, the shear portion of the front plate member is In order to expand the tip end of the shaft portion by compressing between the tip portion of the shaft portion and the surface of the plate material on the back side so as to wrap the tip portion of the shaft portion, No shaft hole is formed, or the inner diameter of the shaft hole formed in the shaft part is 50% or less of the nominal diameter of the shaft part Self-piercing rivet there are to and effective depth is equal to or less than 44% of the length of the shank, (4) for fastening a plurality of superposed plate, head joined to the front side of the plate And a shaft that extends from the lower surface of the head and shears the front plate, and the shear portion of the front plate is compressed between the front end of the shaft and the surface of the back plate. In order to increase the diameter of the tip of the shaft by integrating with the shaft so as to wrap the tip of the shaft, no shaft hole is formed in the shaft, or the inner diameter of the shaft hole formed in the shaft is The inventors have invented a self-piercing rivet characterized by having an effective depth of not more than 60% of the nominal diameter of the shaft portion and not more than 44% of the length of the shaft portion.

従来のリベットでは、表側の板材の剪断部分は軸孔内に入り込み、これが何ら作用を生じるものではなかった。即ち、従来では、当該剪断部分は無用な産物であった。しかし、本発明によれば、軸孔を小さくあるいは無くすことで、表側の板材の剪断部分は、軸部の先端部と裏側の板材表面との間で圧縮されて横方向に拡張し、これが先端部を包み込むようにして軸部と一体化することにより、軸部の先端部は膨径化し、締結作用を生じることとなる。   In the conventional rivet, the sheared portion of the plate material on the front side enters the shaft hole, and this has no effect. That is, conventionally, the sheared portion has been a useless product. However, according to the present invention, by reducing or eliminating the shaft hole, the sheared portion of the front plate member is compressed between the tip portion of the shaft portion and the plate member surface on the back side and expands in the lateral direction. By integrating the shaft portion so as to wrap the portion, the tip end portion of the shaft portion is expanded in diameter, and a fastening action is generated.

そして、このリベットによる板材の締結構造としては、複数の重ね合わされた板材に対して前記（１）ないし（４）のいずれかの自己穿孔型リベットが打ち込まれた板材の締結構造において、表側の板材のリベットによる剪断部分がリベットの軸部の先端部を包み込むように軸部と一体化して軸部の先端部が膨径化することにより、該膨径部とリベットの頭部とで板材が締結されることを特徴とする。 And as the fastening structure of the plate material by this rivet, in the fastening structure of the plate material in which the self-drilling type rivet of any one of (1) to (4) is driven into a plurality of stacked plate materials, The plate part is fastened with the enlarged diameter part and the head part of the rivet by integrating the shaft part so that the sheared part by the rivet wraps around the tip part of the rivet shaft part and expanding the tip part of the shaft part. It is characterized by being.

以上の如く、本発明によれば、従来のように大きな軸孔が形成されることがないために軸部の剛性が低くなることはなく、硬鋼板等、硬い材質の板材に対しても好適な剪断作用を生じ、しかも、その剪断部分によって軸部の先端部が膨径化することで、好適な締結作用が生じ、そのため、硬い材質の板材をも締結することが可能となる。   As described above, according to the present invention, since a large shaft hole is not formed as in the prior art, the rigidity of the shaft portion is not lowered, and it is suitable for a hard plate material such as a hard steel plate. In addition, the shearing portion causes the distal end portion of the shaft portion to swell by the shearing portion, so that a suitable fastening action is generated. Therefore, it is possible to fasten a hard plate material.

以下、本発明の一実施形態に係るリベットについて図１を基づき説明する。本実施形態に係るリベット１は、頭部２と、該頭部２の下面より延びて軸孔（空洞）３ａを有する軸部３とで構成される。頭部２は、軸部３よりも大径であり、軸部３の約１５０％に形成されている。また、頭部２の下面と軸部３の外周面とは滑らかな円弧面で接続されている。   Hereinafter, the rivet which concerns on one Embodiment of this invention is demonstrated based on FIG. A rivet 1 according to this embodiment includes a head 2 and a shaft 3 that extends from the lower surface of the head 2 and has a shaft hole (cavity) 3a. The head 2 is larger in diameter than the shaft 3 and is formed at about 150% of the shaft 3. Further, the lower surface of the head 2 and the outer peripheral surface of the shaft portion 3 are connected by a smooth arc surface.

本実施形態に係るリベット１と従来のリベット１’が異なる点は、本実施形態に係るリベット１の軸孔３ａは浅く形成されるのに対し、従来のリベット１’の軸孔３ａ’は深く形成されている点である。また、本実施形態に係るリベット１の軸孔３ａは小径に形成されるのに対し、従来のリベット１’の軸孔３ａ’は大径に形成されている点である。これは、本実施形態に係る軸孔３ａはあくまで補助的な環状部分を形成するために設けられるものであるのに対し、従来の軸孔３ａ’は積極的に拡開可能な環状部分を形成するために設けられるものであるという考え方の相違に基づく。   The difference between the rivet 1 according to this embodiment and the conventional rivet 1 'is that the shaft hole 3a of the rivet 1 according to this embodiment is formed shallow, whereas the shaft hole 3a' of the conventional rivet 1 'is deep. It is a point that is formed. Further, the shaft hole 3a of the rivet 1 according to the present embodiment is formed with a small diameter, whereas the shaft hole 3a 'of the conventional rivet 1' is formed with a large diameter. This is because the shaft hole 3a according to the present embodiment is provided only to form an auxiliary annular portion, whereas the conventional shaft hole 3a 'forms an annular portion that can be actively expanded. Based on the difference in the idea that it is provided.

このように構成されたリベット１による板材Ｐ１，Ｐ２の締結に際しては、図２（イ）に示す如く、板材Ｐ１，Ｐ２をカシメ装置１００のダイス１０１上に支持した後、ポンチ１０２によって支持されたリベット１を下降させ、その軸部３から板材Ｐ１，Ｐ２に所定の圧力で打ち込む。すると、軸部３によって表側の板材Ｐ１が剪断され（同図（ロ））、さらに、同図（ハ）に示す如く、この剪断部分Ｘが軸部３の先端部と裏側の板材Ｐ２表面との間で圧縮されて横方向に拡張し、これが軸部３の先端部を包み込む。しかも、この剪断部分Ｘは加圧により軸部３の先端部に固着し、軸部３と一体化する。その結果、軸部３の先端部は膨径化し（こぶ状となり）、板材Ｐ１，Ｐ２が締結される。   When the plate materials P1 and P2 are fastened by the rivet 1 configured as described above, the plate materials P1 and P2 are supported by the punch 102 after being supported on the die 101 of the caulking device 100 as shown in FIG. The rivet 1 is lowered and driven into the plate materials P1 and P2 from the shaft portion 3 with a predetermined pressure. Then, the plate member P1 on the front side is sheared by the shaft portion 3 (FIG. 2B), and further, as shown in FIG. 3C, this sheared portion X is formed between the tip portion of the shaft portion 3 and the surface of the plate material P2 on the back side. Is compressed in between and expanded laterally, which wraps around the tip of the shaft 3. In addition, the sheared portion X is fixed to the tip portion of the shaft portion 3 by pressurization and is integrated with the shaft portion 3. As a result, the distal end portion of the shaft portion 3 is enlarged in diameter (becomes a hump), and the plate materials P1 and P2 are fastened.

しかも、小さい軸孔３ａによって形成された軸部３の補助的な環状部分が打ち込みによって僅かに拡開すると共に、剪断部分Ｘはその一部（外周部）が軸部３の外周面にまで回り込むため、軸部３との一体化の強度はさらに増強され、リベット１を軸方向に引っ張っても剪断部分Ｘがリベット１から外れることもない。従って、締結強度は非常に強いものとなる。尚、軸部３の先端部に剪断部分Ｘが固着した状態を理解するために、打ち込み後のリベットの外観写真を図３に示す。   In addition, the auxiliary annular portion of the shaft portion 3 formed by the small shaft hole 3a is slightly expanded by driving, and a part (outer peripheral portion) of the shearing portion X extends to the outer peripheral surface of the shaft portion 3. Therefore, the strength of integration with the shaft portion 3 is further increased, and even if the rivet 1 is pulled in the axial direction, the sheared portion X does not come off the rivet 1. Therefore, the fastening strength is very strong. In addition, in order to understand the state in which the shearing portion X is fixed to the tip portion of the shaft portion 3, an appearance photograph of the rivet after driving is shown in FIG.

剪断荷重試験を行って締結強度を検証するために、種々の寸法を変えて複数のリベットを作成した。即ち、（１）まず、図４（イ）に示す如く、軸部３の呼び径（外径）Ｄを４．０ｍｍ、軸部３の長さ（首下長さ）Ｌを４．６ｍｍ、軸孔３ａの内径ｄを２．０ｍｍとしたもので、孔深さＡが、０．０ｍｍ、即ち軸孔３ａを形成しないもの（実施例１．１）、０．５ｍｍ（実施例１．２）、１．０ｍｍ（実施例１．３）、１．５ｍｍ（実施例１．４）、２．０ｍｍ（実施例１．５）のそれぞれを作成し、（２）次に、同図（ロ）に示す如く、軸部３の呼び径（外径）Ｄを５．０ｍｍ、軸部３の長さ（首下長さ）Ｌを４．６ｍｍ、軸孔３ａの内径ｄを２．５ｍｍとしたもので、孔深さＡが、０．０ｍｍ（実施例２．１）、０．５ｍｍ（実施例２．２）、１．０ｍｍ（実施例２．３）、１．５ｍｍ（実施例２．４）、２．０ｍｍ（実施例２．５）のそれぞれを作成し、（３）次に、同図（ハ）に示す如く、軸部３の呼び径（外径）Ｄを５．０ｍｍ、軸部３の長さ（首下長さ）Ｌを４．６ｍｍ、軸孔３ａの内径ｄを３．０ｍｍとしたもので、孔深さＡが、０．０ｍｍ（実施例３．１：実施例２．１と同じ）、０．５ｍｍ（実施例３．２）、１．０ｍｍ（実施例３．３）、１．５ｍｍ（実施例３．４）、２．０ｍｍ（実施例３．５）のそれぞれを作成した。尚、孔深さＡとは、内径が同じ部分あるいはそれに準じる部分の有効深さのことであって、最深深さとは異なる。   In order to perform a shear load test and verify the fastening strength, a plurality of rivets were made with varying dimensions. That is, (1) First, as shown in FIG. 4 (a), the nominal diameter (outer diameter) D of the shaft portion 3 is 4.0 mm, the length of the shaft portion 3 (length under the neck) L is 4.6 mm, The inner diameter d of the shaft hole 3a is 2.0 mm, the hole depth A is 0.0 mm, that is, the shaft hole 3a is not formed (Example 1.1), 0.5 mm (Example 1.2) ), 1.0 mm (Example 1.3), 1.5 mm (Example 1.4), and 2.0 mm (Example 1.5), respectively. (2) Next, FIG. ), The nominal diameter (outer diameter) D of the shaft portion 3 is 5.0 mm, the length (neck length) L of the shaft portion 3 is 4.6 mm, and the inner diameter d of the shaft hole 3a is 2.5 mm. The hole depth A was 0.0 mm (Example 2.1), 0.5 mm (Example 2.2), 1.0 mm (Example 2.3), 1.5 mm (Example 2). .4), 2.0 mm (Example 2.5) (3) Next, as shown in FIG. 5C, the nominal diameter (outer diameter) D of the shaft portion 3 is 5.0 mm, and the length of the shaft portion 3 (the length under the neck). L is 4.6 mm, the inner diameter d of the shaft hole 3 a is 3.0 mm, and the hole depth A is 0.0 mm (same as Example 3.1: Example 2.1), 0.5 mm ( Example 3.2), 1.0 mm (Example 3.3), 1.5 mm (Example 3.4), and 2.0 mm (Example 3.5) were prepared. The hole depth A is an effective depth of a portion having the same inner diameter or a portion equivalent thereto, and is different from the deepest depth.

そして、これらリベットの打ち込みを行った。条件は、表側の板材Ｐ１として板厚１．６ｍｍのＳＳ４００スーパーダイマ鋼板、裏側の板材Ｐ２として板厚１．６ｍｍのＳＳスーパーダイマ鋼板を用い、実施例１．１〜１．５では、ダイス内径７．０ｍｍ、ダイス深さ２．０ｍｍ、実施例２．１〜２．５では、ダイス内径８．０ｍｍ、ダイス深さ２．０ｍｍ、実施例３．１〜３．５では、ダイス内径８．０ｍｍ、ダイス深さ２．０ｍｍとした。   Then, these rivets were driven. The conditions used were a SS400 super dimmer steel plate with a plate thickness of 1.6 mm as the front plate member P1, and a SS super dimer steel plate with a plate thickness of 1.6 mm as the back plate member P2. 0 mm, die depth 2.0 mm, in Examples 2.1 to 2.5, die inner diameter 8.0 mm, die depth 2.0 mm, in Examples 3.1 to 3.5, die inner diameter 8.0 mm, The die depth was 2.0 mm.

これらに対し、剪断荷重試験を行い、その結果を図５に示す。尚、試験方法では、板材Ｐ１，Ｐ２を水平反対方向に引っ張り、リベットが剪断される荷重を計測する。図５からわかるように、何れ（実施例１．１〜３．５）も要求される安全剪断荷重３．５ｋＮ（出願人の規定による）をクリアしており、本実施形態に係るリベットによる締結強度は十分に強いものであることが理解できる。   A shear load test was performed on these, and the results are shown in FIG. In the test method, the plate materials P1 and P2 are pulled in the opposite directions, and the load at which the rivet is sheared is measured. As can be seen from FIG. 5, all (Examples 1.1 to 3.5) satisfy the required safe shear load of 3.5 kN (according to the applicant's regulations), and are fastened by rivets according to this embodiment. It can be understood that the strength is sufficiently strong.

最後に、実施例１．１〜３．５による締結構造の切断写真を図６〜１０に示す。それぞれの図において、追記した実線が軸部３の先端部に固着した剪断部分Ｘと裏側の板材Ｐ２表面との境界線を示すが、何れも軸部３より膨径化したものであり、締結作用を生じるものであることが理解できる。   Finally, cutting photographs of the fastening structures according to Examples 1.1 to 3.5 are shown in FIGS. In each figure, the added solid line shows the boundary line between the sheared portion X fixed to the tip portion of the shaft portion 3 and the surface of the plate material P2 on the back side. It can be understood that this produces an action.

尚、本発明は上記実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲で種々の変更が可能である。   In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention.

例えば、上記実施例においては、板材Ｐ１，Ｐ２としてＳＳスーパーダイマ鋼板を用いているが、対象となる材質はこれに限定されず、例えばステンレス鋼板を対象とすることができる。また、硬い材質の板材に限定されず、従来同様、アルミニウム合金板、軟鋼板であってもよい。   For example, in the above embodiment, SS super dimmer steel plates are used as the plate materials P1 and P2, but the target material is not limited to this, and for example, stainless steel plates can be used. Moreover, it is not limited to the board | plate material of a hard material, An aluminum alloy plate and a mild steel plate may be sufficient like the past.

また、アルミニウム合金板等を用いる場合、その粘りによって剪断部分Ｘは表側の板材から完全に分断されず、外周部が板材に繋がったままの状態となることもある。本発明においてはこれも当然に「剪断部分」として取り扱う。   Further, when an aluminum alloy plate or the like is used, the sheared portion X may not be completely separated from the front plate material due to its stickiness, and the outer peripheral portion may remain connected to the plate material. In the present invention, this is naturally handled as a “shear portion”.

また、上記実施形態及び実施例においては、表側の板材と裏側の板材とが同質のものを用いているが、例えば、表側の板材として硬鋼板、裏側の板材としてアルミニウム板を用いる等、異種の板材を締結するものであってもよい。さらには、板厚の異なる板材同士を締結してもよい。例えば、表側の板材の板厚を１．６ｍｍとし、裏側の板材の板厚を２．３ｍｍとしたり、あるいはこの逆にする。   Moreover, in the said embodiment and Example, although the board | plate material of the front side and the board | plate material of the back side are using the same thing, for example, using a hard steel plate as a board material of a front side, using an aluminum plate as a board material of a back side, etc. A plate material may be fastened. Furthermore, plate members having different plate thicknesses may be fastened. For example, the thickness of the front side plate material is 1.6 mm, and the thickness of the back side plate material is 2.3 mm, or vice versa.

また、上記実施例においては、軸部３の呼び径（直径）が４．０ｍｍと５．０ｍｍについて言及したが、例えば呼び径が３．０ｍｍや６．０ｍｍのものも当然に含まれる。   Moreover, in the said Example, although the nominal diameter (diameter) of the axial part 3 mentioned 4.0mm and 5.0mm, for example, the nominal diameter of 3.0mm and 6.0mm is also included naturally.

また、上記実施形態及び実施例においては、リベット１が裏側の板材Ｐ２を突き破ることない態様のみを言及しているが、これには限定されず、本発明に係るリベットは、裏側の板材Ｐ２を突き破るものをも含む。   Moreover, in the said embodiment and Example, although only the aspect which the rivet 1 does not pierce | pierce the back side board | plate material P2 is mentioned, it is not limited to this, The rivet which concerns on this invention is using the back side board | plate material P2. Including those that break through.

また、上記実施形態及び実施例においては、軸孔３ａとしてドリルにより形成したストレート孔のみを言及しているが、これには限定されず、テーパ孔であったり、開口が面取りされた孔であってもよい。   Further, in the above-described embodiment and examples, only the straight hole formed by the drill is referred to as the shaft hole 3a. However, the shaft hole 3a is not limited to this, and is a tapered hole or a hole whose opening is chamfered. May be.

本実施形態に係るリベットの断面図を示す。Sectional drawing of the rivet which concerns on this embodiment is shown. 同実施形態に係るリベットを打ち込む状態であって、（イ）は、打ち込み始めの断面図、（ロ）は、打ち込み途中の断面図、（ハ）は、打ち込み完了の断面図、をそれぞれ示す。In the state of driving the rivet according to the embodiment, (a) is a cross-sectional view at the start of driving, (B) is a cross-sectional view during driving, and (C) is a cross-sectional view after driving is completed. （イ）は、同実施形態に係るリベットの打ち込み後の外観写真、（ロ）は、（イ）の切断写真、をそれぞれ示す。(A) shows an appearance photograph after rivet driving according to the embodiment, and (B) shows a cut photograph of (A). （イ）は、実施例１．１〜１．５の外形寸法の説明図、（ロ）は、実施例２．１〜２．５の外形寸法の説明図、（ハ）は、実施例３．１〜３．５の外形寸法の説明図、をそれぞれ示す。(A) is an explanatory diagram of the external dimensions of Examples 1.1 to 1.5, (b) is an explanatory diagram of the external dimensions of Examples 2.1 to 2.5, and (c) is an exemplary embodiment 3. .1 to 3.5 are explanatory diagrams of external dimensions. 実施例１．１〜３．５による締結構造の剪断荷重試験結果を示す。The shear load test result of the fastening structure by Examples 1.1-3.5 is shown. （イ）は、実施例１．１による締結構造の切断写真、（ロ）は、実施例２．１（実施例３．１）による締結構造の切断写真、をそれぞれ示す。(A) shows a cutting photograph of the fastening structure according to Example 1.1, and (B) shows a cutting photograph of the fastening structure according to Example 2.1 (Example 3.1). （イ）は、実施例１．２による締結構造の切断写真、（ロ）は、実施例２．２による締結構造の切断写真、（ハ）は、実施例３．２による締結構造の切断写真、をそれぞれ示す。(A) is a cutting photograph of the fastening structure according to Example 1.2, (b) is a cutting photograph of the fastening structure according to Example 2.2, and (c) is a cutting photograph of the fastening structure according to Example 3.2. , Respectively. （イ）は、実施例１．３による締結構造の切断写真、（ロ）は、実施例２．３による締結構造の切断写真、（ハ）は、実施例３．３による締結構造の切断写真、をそれぞれ示す。(A) is a cutting photograph of the fastening structure according to Example 1.3, (b) is a cutting photograph of the fastening structure according to Example 2.3, and (c) is a cutting photograph of the fastening structure according to Example 3.3. , Respectively. （イ）は、実施例１．４による締結構造の切断写真、（ロ）は、実施例２．４による締結構造の切断写真、（ハ）は、実施例３．４による締結構造の切断写真、をそれぞれ示す。(A) is a cutting photograph of the fastening structure according to Example 1.4, (b) is a cutting photograph of the fastening structure according to Example 2.4, and (c) is a cutting photograph of the fastening structure according to Example 3.4. , Respectively. （イ）は、実施例１．５による締結構造の切断写真、（ロ）は、実施例２．５による締結構造の切断写真、（ハ）は、実施例３．５による締結構造の切断写真、をそれぞれ示す。(A) is a cutting photograph of the fastening structure according to Example 1.5, (b) is a cutting photograph of the fastening structure according to Example 2.5, and (c) is a cutting photograph of the fastening structure according to Example 3.5. , Respectively. 従来のリベットを打ち込む状態であって、（イ）は、リベットの断面図、（ロ）は、打ち込み始めの断面図、（ハ）は、打ち込み途中の断面図、（ニ）は、打ち込み完了の断面図、をそれぞれ示す。A conventional rivet is driven, (A) is a cross-sectional view of the rivet, (B) is a cross-sectional view at the start of driving, (C) is a cross-sectional view in the middle of driving, and (D) is a completion of driving. Cross sections are shown respectively.

符号の説明Explanation of symbols

１…リベット、２…頭部、３…軸部、３ａ…軸孔、１００…カシメ装置、１０１…ダイス、１０１ｂ…中心の凸部、１０２…ポンチ、Ｐ１…表側の板材、Ｐ２…裏側の板材、Ｘ…剪断部分   DESCRIPTION OF SYMBOLS 1 ... Rivet, 2 ... Head, 3 ... Shaft part, 3a ... Shaft hole, 100 ... Caulking device, 101 ... Die, 101b ... Central convex part, 102 ... Punch, P1 ... Front side board | plate material, P2 ... Back side board | plate material , X ... Shear part

Claims (5)

複数の重ね合わされた板材を締結するため、表側の板材に接合する頭部と、該頭部の下面より延びて、表側の板材を剪断する軸部とを備え、前記表側の板材の剪断部分が軸部の先端部と裏側の板材の表面との間で圧縮されて軸部の先端部を包み込むように軸部と一体化することによって軸部の先端部を膨径化させるため、軸部に軸孔が形成されないか、あるいは軸部に形成される軸孔の有効深さが軸部の長さの４４％以下であることを特徴とする自己穿孔型リベット。 In order to fasten a plurality of stacked plate members, a head portion joined to the front plate member, and a shaft portion extending from the lower surface of the head portion to shear the front plate member, the shear portion of the front plate member is In order to expand the tip end of the shaft portion by compressing between the tip portion of the shaft portion and the surface of the plate material on the back side so as to wrap the tip portion of the shaft portion, A self-drilling rivet characterized in that the shaft hole is not formed or the effective depth of the shaft hole formed in the shaft portion is 44% or less of the length of the shaft portion. 複数の重ね合わされた板材を締結するため、表側の板材に接合する頭部と、該頭部の下面より延びて、表側の板材を剪断する軸部とを備え、前記表側の板材の剪断部分が軸部の先端部と裏側の板材の表面との間で圧縮されて軸部の先端部を包み込むように軸部と一体化することによって軸部の先端部を膨径化させるため、軸部に軸孔が形成されないか、あるいは軸部に形成される軸孔の内径が軸部の呼び径の６０％以下であって且つ有効深さが軸部の長さの４４％以下であることを特徴とする自己穿孔型リベット。 In order to fasten a plurality of stacked plate members, a head portion joined to the front plate member, and a shaft portion extending from the lower surface of the head portion to shear the front plate member, the shear portion of the front plate member is In order to expand the tip end of the shaft portion by compressing between the tip portion of the shaft portion and the surface of the plate material on the back side so as to wrap the tip portion of the shaft portion, The shaft hole is not formed, or the inner diameter of the shaft hole formed in the shaft portion is 60% or less of the nominal diameter of the shaft portion, and the effective depth is 44% or less of the length of the shaft portion. Self-drilling rivet. 複数の重ね合わされた板材を締結するため、表側の板材に接合する頭部と、該頭部の下面より延びて、表側の板材を剪断する軸部とを備え、前記表側の板材の剪断部分が軸部の先端部と裏側の板材の表面との間で圧縮されて軸部の先端部を包み込むように軸部と一体化することによって軸部の先端部を膨径化させるため、軸部に軸孔が形成されないか、あるいは軸部に形成される軸孔の内径が軸部の呼び径の５０％以下であって且つ有効深さが軸部の長さの４４％以下であることを特徴とする自己穿孔型リベット。 In order to fasten a plurality of stacked plate members, a head portion joined to the front plate member, and a shaft portion extending from the lower surface of the head portion to shear the front plate member, the shear portion of the front plate member is In order to expand the tip end of the shaft portion by compressing between the tip portion of the shaft portion and the surface of the plate material on the back side so as to wrap the tip portion of the shaft portion, The shaft hole is not formed, or the inner diameter of the shaft hole formed in the shaft portion is 50% or less of the nominal diameter of the shaft portion, and the effective depth is 44% or less of the length of the shaft portion. Self-drilling rivet. 複数の重ね合わされた板材を締結するため、表側の板材に接合する頭部と、該頭部の下面より延びて、表側の板材を剪断する軸部とを備え、前記表側の板材の剪断部分が軸部の先端部と裏側の板材の表面との間で圧縮されて軸部の先端部を包み込むように軸部と一体化することによって軸部の先端部を膨径化させるため、軸部に軸孔が形成されないか、あるいは軸部に形成される軸孔の内径が軸部の呼び径の６０％以下であって且つ有効深さが軸部の長さの４４％以下であることを特徴とする自己穿孔型リベット。 In order to fasten a plurality of stacked plate members, a head portion joined to the front plate member, and a shaft portion extending from the lower surface of the head portion to shear the front plate member, the shear portion of the front plate member is In order to expand the tip end of the shaft portion by compressing between the tip portion of the shaft portion and the surface of the plate material on the back side so as to wrap the tip portion of the shaft portion, The shaft hole is not formed, or the inner diameter of the shaft hole formed in the shaft portion is 60% or less of the nominal diameter of the shaft portion, and the effective depth is 44% or less of the length of the shaft portion. Self-drilling rivet. 複数の重ね合わされた板材に対して請求項１ないし４のいずれか一つに記載された自己穿孔型リベットが打ち込まれた板材の締結構造において、表側の板材のリベットによる剪断部分がリベットの軸部の先端部を包み込むように軸部と一体化して軸部の先端部が膨径化することにより、該膨径部とリベットの頭部とで板材が締結されることを特徴とする板材の締結構造。 The self-drilling rivet according to any one of claims 1 to 4, wherein the shearing portion by the rivet of the front side plate material is a shaft portion of the rivet. The plate material is fastened by integrating the shaft portion with the shaft portion so as to wrap the tip portion of the shaft and expanding the tip portion of the shaft portion so that the expanded material portion and the head portion of the rivet are fastened. Construction.
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JP2006226302A (en) 2006-08-31
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TWI369454B (en) 2012-08-01
WO2006087984A8 (en) 2007-03-15

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