JPH0754655Y2 - Blind rivet - Google Patents
Blind rivetInfo
- Publication number
- JPH0754655Y2 JPH0754655Y2 JP1991066273U JP6627391U JPH0754655Y2 JP H0754655 Y2 JPH0754655 Y2 JP H0754655Y2 JP 1991066273 U JP1991066273 U JP 1991066273U JP 6627391 U JP6627391 U JP 6627391U JP H0754655 Y2 JPH0754655 Y2 JP H0754655Y2
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- head
- sleeve
- blind rivet
- mandrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Insertion Pins And Rivets (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この考案は、主として板状の被連
結用部材をこれらの片側からのみの締結作業によりかし
め止めできるブラインドリベットに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blind rivet which is capable of caulking a plate-shaped member to be connected by a fastening operation only from one side thereof.
【０００２】[0002]
【従来の技術】ブラインドリベットは、円筒状の胴体部
の一端開口部に鍔状に膨出したフランジ部を有するスリ
ーブに、軸状部の一端部に胴体部の内径よりも大径の頭
部を有するマンドレルの該軸状部を挿通させた構成にな
っている。そして、例えば２枚の板状体の連結に際し
て、これら板状体に穿設した貫通孔に、頭部側から挿通
してフランジ部を板状体に接合した後に、かしめ工具に
よりフランジ部を板状体に押し付け保持しながらマンド
レルの軸状部を手前側に引き出すことにより、頭部によ
り胴体部の端部が外方に押し拡げられ、または圧潰さ
れ、この胴体部の塑性変形によりかしめ加工が施され、
かしめが限界に達すると軸状部が破断されてリベット締
めが完了する。2. Description of the Related Art A blind rivet is a sleeve having a flange portion that bulges like a brim at one end opening of a cylindrical body, and a head having a diameter larger than the inner diameter of the body at one end of the shaft-like portion. The mandrel having the above is inserted through the shaft portion. Then, for example, when connecting two plate-shaped bodies, after inserting the flanges into the plate-shaped bodies by inserting the flanges into the through-holes formed in the plate-shaped bodies from the head side, the flanges are plate-shaped by a caulking tool. By pushing the mandrel shaft toward the front while pressing and holding it against the body, the end of the body is pushed outward by the head or crushed, and the caulking process is performed by plastic deformation of the body. Given,
When the caulking reaches the limit, the shaft portion is broken and riveting is completed.
【０００３】[0003]
【考案が解決しようとする課題】しかしながら、このよ
うなブラインドリベットには以下のような欠点がある。
即ち、このブラインドリベットにより被連結部材は強く
締結されるのであるが、この連結手段による機械的欠点
として、僅かではあっても隙間が発生するのは避け難
く、液密性に劣る。そのため、風雨にさられれる箇所に
使用する場合、特にヨットの補修等に使用する場合には
水漏れや錆の発生といった重大な問題が生じる他に、該
リベットと被連結部材との材質が相違すると、金属相互
の接触面に生じる電位差により錆の発生および進行を促
すため、該リベットの部分が特に錆が発生し易く、この
錆が被連結部材全体に進行することになる。However, such a blind rivet has the following drawbacks.
That is, the member to be connected is strongly fastened by the blind rivet, but as a mechanical defect due to the connecting means, it is unavoidable that a gap is generated, and the liquid tightness is poor. Therefore, when used in a place exposed to wind and rain, especially when used for repairing a yacht, in addition to serious problems such as water leakage and rusting, the material of the rivet and the connected member is different. Then, since the generation and progress of rust is promoted by the potential difference generated between the contact surfaces of the metals, rust is particularly likely to occur at the rivet portion, and this rust propagates to the entire connected member.
【０００４】また、マンドレルの軸状部がスリーブの胴
体部に対し容易に摺動できるように少許の間隙を形設す
る径になっているので、マンドレルがスリーブから抜脱
して分離し易く、使用前における管理が煩雑となる。更
に、軸状部を胴体部から引き抜く方向に引っ張る時に、
前述の少許の間隙により軸状部が胴体部の筒芯方向に対
し傾いた方向に引っ張られることがあり、胴体部の圧潰
が偏った状態で進行して塑性変形が均等に行われず、リ
ベット締めの信頼性が低い。Further, since the mandrel shaft portion has a diameter which forms a small clearance so that the mandrel shaft portion can easily slide with respect to the body portion of the sleeve, the mandrel can be easily detached from the sleeve and separated. The previous management becomes complicated. Furthermore, when pulling the shaft part in the direction to pull it out from the body part,
Due to the small clearance described above, the shaft-like part may be pulled in a direction inclined with respect to the cylinder core direction of the body part. Unreliable.
【０００５】前述した課題に鑑みて、鍔部の締結面及び
中空軸部全体を被覆材で被覆した中空リベット及びピン
（マンドレル）の軸部にリブを設けたリベットが考案さ
れている。この種のものとしては例えば実開昭６１−６
４５０８号にて開示されている「拡張式リベット」及び
実開昭５９−１４９２５１号にて開示されている「盲締
付け具」が例示される。実開昭６１−６４５０８号の開
示技術は、中空リベットの鍔部の締結面及び中空軸部全
体を合成樹脂からなる被覆材で被覆することにより、リ
ベット締結状態において中空リベットと被締結部材との
間に被覆体を介在させ中空リベットと被締結部材の直接
金属接触による錆の発生を防止するものである。また、
実開昭５９−１４９２５１号の開示技術は、ピンヘッド
の周辺方向に間隔をおいた数個の長手方向リブを設ける
ことで、ピンとスリーブ孔との間に圧入嵌合を与えるも
のである。In view of the above-mentioned problems, a hollow rivet in which the fastening surface of the collar portion and the entire hollow shaft portion are covered with a coating material, and a rivet in which a rib is provided on the shaft portion of a pin (mandrel) have been devised. An example of this type is, for example, Shoukaisho 61-6.
The "expandable rivet" disclosed in No. 4508 and the "blind tightening tool" disclosed in Japanese Utility Model Laid-Open No. 59-149251 are exemplified. The technique disclosed in Japanese Utility Model Laid-Open No. 61-64508 discloses that the fastening surface of the collar portion of the hollow rivet and the entire hollow shaft portion are covered with a covering material made of synthetic resin, so that the hollow rivet and the fastened member are fastened in the rivet fastened state. A cover is interposed between the hollow rivet and the member to be fastened to prevent direct metal contact from causing rust. Also,
The technique disclosed in Japanese Utility Model Laid-Open No. 59-149251 provides a press-fitting fit between a pin and a sleeve hole by providing several longitudinal ribs spaced in the peripheral direction of the pin head.
【０００６】しかしながら、上記考案には以下に述べる
課題があった。すなわち、実開昭６１−６４５０８号の
開示技術では被覆体がピンの略全体に密着して被覆する
構成であるため、締結時に被覆体に生じる変形を吸収す
ることができず被覆体の破損につながる恐れがあり、ヨ
ットの修理等のような過酷な条件下での使用には適さな
かった。また、実開昭５９−１４９２５１号の開示技術
ではリブが切断部よりも軸の引き抜き方向後方に設けら
れている為、軸の引き抜き時にリブは締結部を通過せず
軸の引き抜き方向へのガイドの役目を確実に果たすこと
ができなかった。However, the above-mentioned invention has the following problems. That is, in the technique disclosed in Japanese Utility Model Laid-Open No. 61-64508, since the covering body is in close contact with and covers almost the entire pin, the deformation occurring in the covering body at the time of fastening cannot be absorbed and the covering body is damaged. There was a risk of connection, and it was not suitable for use under severe conditions such as repairing a yacht. Further, in the technique disclosed in Japanese Utility Model Laid-Open No. 59-149251, since the rib is provided behind the cutting portion in the shaft withdrawal direction, the rib does not pass through the fastening portion when the shaft is withdrawn, and the rib is guided in the shaft withdrawing direction. Could not be fulfilled reliably.
【０００７】[0007]
【課題を解決するための手段】この考案は、上記した課
題を達成するための技術的手段として、ブラインドリベ
ットを次のように構成した。即ち、円筒状の胴体部の一
端部に鍔状に膨出するフランジ部が一体形成されたスリ
ーブと、このスリーブの胴体部に他端側から挿通された
軸状部の一端部に前記胴体部の内径よりも大径の頭部が
一体形成されたマンドレルとからなるブラインドリベッ
トにおいて、前記軸状部における前記頭部の近傍部位
に、少なくとも一部が小径となった切断部が形成され、
該軸状部の前記切断部よりも軸の引き抜き方向前方にお
ける中心を通る少なくとも対向２箇所に、前記胴体部の
内面に接合するガイド突部が形成され、防水性、弾力性
および電気絶縁性を有する素材により有底円筒状の開口
部に鍔部を一体に備えた形状となったシール材を、前記
頭部および前記胴体部を前記頭部との間に間隙を設けて
それぞれ被覆するとともに前記鍔部を前記フランジ部の
一面に接合するよう前記スリーブに外嵌したことを特徴
として構成されている。According to the present invention, a blind rivet is constructed as follows as a technical means for achieving the above-mentioned problems. That is, a sleeve in which a flange portion that bulges like a collar is integrally formed at one end of a cylindrical body portion, and the body portion is provided at one end of a shaft-shaped portion that is inserted into the body portion of the sleeve from the other end side. In a blind rivet consisting of a mandrel in which a head having a diameter larger than the inner diameter of the head is integrally formed, a cutting portion at least a part of which has a small diameter is formed in a portion of the shaft-like portion near the head.
Guide projections that are joined to the inner surface of the body are formed at least at two opposite locations that pass through the center of the shaft-like portion in the direction of pulling out the shaft with respect to the cutting portion, and provide waterproofness, elasticity, and electrical insulation. A sealing material having a shape in which a flange portion is integrally provided in a cylindrical opening with a bottom is formed by a material having the head portion and the body portion, and a gap is provided between the head portion and the body portion. The sleeve is externally fitted to the flange so as to be joined to one surface of the flange.
【０００８】[0008]
【作用】使用前において、マンドレルの軸状部の少なく
とも対向２箇所に設けたガイド突部が胴体部の内面に接
合しているので、マンドレルがスリーブから妄りに抜脱
することがない。そして、連結に際して被連結部材に穿
設した貫通孔に手前側から挿通すると、貫通孔の孔壁面
と胴体部との間にシール材が介在し、且つフランジ部と
手前側の被連結部材との間にもシール材の鍔部が介在す
る。次に、軸状部をかしめ工具により手前側に引き出す
と、マンドレルの頭部により胴体部の端部が押し拡げら
れ、または圧潰されていき、この胴体部の塑性変形部分
とフランジ部とにより被連結部材が挟持されるかしめ加
工が施され、かしめが限界に達すると軸状部の切断部が
破断されてリベット締めが完了する。この軸状部の引き
抜き時、該軸状部の前記切断部よりも軸の引き抜き方向
前方における中心を通る少なくとも２個のガイド突部が
胴体部の内面に摺説し締結部を通過するので、軸状部は
胴体の筒芯方向にずれることなく移動され、胴体部の塑
性変形が周囲にわたり均等に行われるので、確実なかし
め加工を行うことかできる。このかしめ加工後の手前側
とは反対側部分において、頭部および胴体部の塑性変形
部分がシール材で被覆されているとともに、胴体部の塑
性変形部分を含む全体部分と被連結部材との間にシール
材が介在していることにより、確実な液密性を得ること
ができる。しかも、フランジ部と被連結部材との間にも
シール材の鍔部が介在していてリベット全体が被連結部
材に電気的絶縁状態になっているため、錆の発生を確実
に防止することができる。さらに、シール材と頭部との
間には、シール材と頭部の間には間隙が設けられている
ため、かしめ時にシール材に生じる変形の吸収が可能で
あり、ひいてはシール材の破損の防止にもつながる。従
って、かしめ後に頭部が脱落することもない。Before use, the mandrel is prevented from slipping out of the sleeve since the guide protrusions provided at least at two opposing positions on the shaft-like portion of the mandrel are joined to the inner surface of the body. Then, when the through-hole formed in the member to be connected is inserted from the front side at the time of connection, the sealing material is interposed between the hole wall surface of the through-hole and the body portion, and the flange portion and the connected member on the front side are connected. The collar portion of the sealing material is also interposed therebetween. Next, when the shaft-shaped portion is pulled out to the front side by the caulking tool, the end of the body portion is expanded or crushed by the head of the mandrel, and the plastically deformed portion and the flange portion of the body portion cover the end. When the connecting member is clamped, caulking is performed, and when the caulking reaches a limit, the cut portion of the shaft-like portion is broken and riveting is completed. At the time of pulling out the shaft-shaped portion, since at least two guide projections passing through the center of the shaft-shaped portion in the front of the cutting portion in the pull-out direction of the shaft slide on the inner surface of the body portion and pass through the fastening portion, Since the shaft-like portion is moved in the cylinder core direction of the body without being displaced, and the plastic deformation of the body is evenly performed around the periphery, reliable caulking can be performed. On the side opposite to the front side after the caulking process, the plastically deformed portions of the head and the body are covered with a sealing material, and between the entire portion including the plastically deformed portion of the body and the connected member. Since the sealing material is interposed in the above, reliable liquid tightness can be obtained. Moreover, since the collar portion of the sealing material is interposed between the flange portion and the connected member and the entire rivet is electrically insulated from the connected member, it is possible to reliably prevent rust. it can. Furthermore, since a gap is provided between the seal material and the head portion, the deformation that occurs in the seal material during caulking can be absorbed, and the seal material can be prevented from being damaged. It also leads to prevention. Therefore, the head does not fall off after crimping.
【０００９】[0009]
【実施例】以下、この考案の好適な一実施例について図
面を参照しながら詳述する。図１および図３はこの考案
の一実施例のかしめ加工前およびかしめ加工後のそれぞ
れ断面図で、図２はマンドレル（２）を図１および図３
とは９０°異なる角度から見た側面図である。この考案
のブラインドリベットは、スリーブ（１）とマンドレル
（２）とシール材（３）との３部材により構成されてい
る。スリーブ（１）は、円筒状の胴体部（１ａ）と、こ
の胴体部（１ａ）の一端部から直交方向に鍔状に膨出す
るフランジ部（１ｂ）とが一体形成された形状になって
いる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described in detail below with reference to the drawings. 1 and 3 are cross-sectional views of an embodiment of the present invention before and after crimping, respectively. FIG. 2 shows a mandrel (2) as shown in FIGS.
FIG. 6 is a side view seen from an angle different from 90 °. The blind rivet of the present invention is composed of a sleeve (1), a mandrel (2) and a sealing material (3). The sleeve (1) has a shape in which a cylindrical body portion (1a) and a flange portion (1b) that bulges in a brim shape in the orthogonal direction from one end portion of the body portion (1a) are integrally formed. There is.
【００１０】マンドレル（２）は、胴体部（１ａ）の内
径よりも僅かに小さな径の軸状部（２ａ）と、この軸状
部（２ａ）の一端部において前記胴体部（１ａ）の内径
よりも大径の略球状に形成された頭部（２ｂ）と、軸状
部（２ａ）の他端部に円錐状に形成されたかしめ工具へ
の連結部（２ｃ）と、図２から明らかなように軸状部
（２ａ）における頭部（２ｂ）の近傍部位において対向
２側面に凹設した２個の溝からなる切断部（２ｄ）と、
図２から明らかなように軸状部（２ａ）の切断部（２
ｄ）よりも軸の引き抜き方向前方における中心を通る少
なくとも対向２箇所を圧潰するすることによりこれらの
間に膨出された２個のガイド突部（２ｅ）とを一体に備
えている。２個のガイド突部（２ｅ）は、それぞれ胴体
部（１ａ）の内面に当接する寸法に設定されている。The mandrel (2) comprises a shaft portion (2a) having a diameter slightly smaller than the inner diameter of the body portion (1a), and an inner diameter of the body portion (1a) at one end of the shaft portion (2a). A head portion (2b) formed in a substantially spherical shape having a larger diameter than that, and a connecting portion (2c) to a caulking tool formed in a conical shape at the other end of the shaft-like portion (2a), which is apparent from FIG. As described above, in the shaft-shaped portion (2a) in the vicinity of the head portion (2b), a cutting portion (2d) formed of two grooves recessed in the two opposite side surfaces,
As is clear from FIG. 2, the cut portion (2
Two guide protrusions (2e) bulged between the two are integrally provided by crushing at least two opposing portions passing through the center in the front of the shaft in the pull-out direction relative to d). The two guide protrusions (2e) are set to have dimensions so as to contact the inner surface of the body portion (1a).
【００１１】シール材（３）は、防水性、弾力性および
電気絶縁性を有する素材、例えばナイロンにより有底円
筒体（３ａ）の開口部に鍔部（３ｂ）を一体に備えた形
状となっており、有底円筒体（３ａ）が胴体部（１ａ）
に外嵌されて頭部（２ｂ）および胴体部（１ａ）をそれ
ぞれ被覆しているとともに、鍔部（３ｂ）をフランジ部
（１ｂ）の一面に接合させた状態で取着されている。ま
た、シール材（３）と頭部（２ｂ）との間には、間隙が
設けられている。なお、この間隙は、シール材（３）と
頭部（２ｂ）の間の距離が締結時の被締結材と頭部（２
ｂ）との距離の６０％以上となるように設けることが望
ましい。The sealing material (3) is made of a material having waterproofness, elasticity and electrical insulation, for example, nylon, and has a shape in which the flange portion (3b) is integrally provided in the opening of the bottomed cylindrical body (3a). And the bottomed cylindrical body (3a) is the body part (1a)
It is fitted onto the head portion (2b) and the body portion (1a) respectively, and the collar portion (3b) is attached to one surface of the flange portion (1b). In addition, a gap is provided between the seal material (3) and the head portion (2b). The gap between the seal material (3) and the head (2b) is the distance between the material to be fastened and the head (2) at the time of fastening.
It is desirable that the distance is 60% or more of the distance from b).
【００１２】次に、前記実施例の作用について説明す
る。使用前においては、図１に示すよに、マンドレル
（２）の軸状部（２ａ）の対向２箇所に設けたガイド突
部（２ｅ）が胴体部（１ａ）の内面に当接しているの
で、マンドレル（２）がスリーブ（１）から妄りに抜脱
することかなく、従って、シール材（３）も胴体部（１
ａ）から抜脱することがない。Next, the operation of the above embodiment will be described. Before use, as shown in FIG. 1, since the guide protrusions (2e) provided at two opposite positions of the shaft-like portion (2a) of the mandrel (2) are in contact with the inner surface of the body portion (1a). , The mandrel (2) will not inadvertently slip out of the sleeve (1), and therefore the sealing material (3) will also be in the body (1).
It does not come off from a).
【００１３】そして、連結に際して、図１に示すよう
に、被連結部材（４），（５）を重ねて穿設した貫通孔
（４ａ），（５ａ）に、例えばヨットの修理の場合には
手前側（図の右方）からＡ矢印方向にシール材（３）部
分を挿入する。ここで、シール材（３）が弾力性を有し
ているので、貫通孔（４ａ），（５ａ）をシール材
（３）の外径と略同じ径に穿設することができ、シール
材（３）の弾力性を利用して圧入することによりシール
材（３）が貫通孔（４ａ），（５ａ）の孔壁面に密着す
る。シール材（３）の鍔部（３ｂ）を介在してフランジ
部（１ｂ）を手前側の被連結部材（４）に接合させ、軸
状部（２ａ）の先端の連結部（２ｃ）をリベッター等の
かしめ工具（図示せず）に連結した後に、かしめ工具に
よりフランジ部（１ｂ）を被連結部材（４）に押し付け
ながら軸状部（２ａ）をＢ矢印で示す手前側に引き出
す。At the time of connection, as shown in FIG. 1, in the through holes (4a) and (5a) formed by overlapping the members to be connected (4) and (5), for example, in the case of repairing a yacht. Insert the sealing material (3) portion from the front side (right side in the figure) in the direction of arrow A. Here, since the sealing material (3) has elasticity, the through holes (4a), (5a) can be bored to have a diameter substantially the same as the outer diameter of the sealing material (3). By press-fitting by utilizing the elasticity of (3), the sealing material (3) is brought into close contact with the hole wall surfaces of the through holes (4a) and (5a). The flange portion (1b) is joined to the connected member (4) on the front side through the collar portion (3b) of the seal material (3), and the connecting portion (2c) at the tip of the shaft-shaped portion (2a) is riveted. After connecting to a caulking tool (not shown) such as the above, the caulking tool pushes the flange portion (1b) against the connected member (4) and pulls out the shaft-like portion (2a) to the front side indicated by the arrow B.
【００１４】それにより、図３に示すうように、マンド
レル（２）の頭部（２ｂ）が胴体部（１ａ）の周壁部を
外方に押し拡げながら入り込んでいき、この胴体部（１
ａ）の塑性変形部分とフランジ部（１ｂ）とにより各被
連結部材（４），（５）を鋏持するかしめ加工が施さ
れ、かしめが限界に達すると軸状部（２ａ）の切断部
（２ｄ）が破断されてリベット締めが完了する。前述の
軸状部（２ａ）の引き抜き時、この軸状部（２ａ）の対
向２側面のガイド突部（２ｅ）が胴体部（１ａ）の内面
に摺接し締結部を通過することにより、軸状部（２ａ）
は胴体部（１ａ）の筒芯方向からずれることなく移動さ
れるため、胴体部（１ａ）の塑性変形が周囲に均等に行
われ、確実な連結状態を得ることができる。As a result, as shown in FIG. 3, the head portion (2b) of the mandrel (2) pushes the peripheral wall portion of the body portion (1a) outward to enter the body portion (1).
The plastically deformed portion of a) and the flange portion (1b) are subjected to crimping for holding the respective connected members (4) and (5), and when the crimping reaches the limit, the cut portion of the shaft-like portion (2a) (2d) is broken and riveting is completed. When the above-mentioned shaft-like portion (2a) is pulled out, the guide protrusions (2e) on the two opposite side surfaces of the shaft-like portion (2a) slide on the inner surface of the body portion (1a) and pass through the fastening portion, so that Section (2a)
Since the body part (1a) is moved without shifting from the cylinder core direction of the body part (1a), the plastic deformation of the body part (1a) is uniformly performed around the body part, and a reliable connected state can be obtained.
【００１５】このリベット締め完了後は、被連結部材
（５）側の外方において、頭部（２ｂ）および胴体部
（１ａ）の塑性変形部分がシール材（３）で被覆されて
いるとともに、胴体部（１ａ）の塑性変形部分を含む全
体部分と被連結部材（４），（５）との間にシール材
（３）が介在していることにより、確実な気密性及び液
密性を得ることができる。しかも、フランジ部（１ｂ）
と被連結部材（４）との間にもシール材（３）の鍔部
（３ｂ）が介在していてリベット全体が被連結部材
（４），（５）に電気的絶縁状態になっているため、電
位差による錆の発生を確実に防止することかできる。ま
た、シール材（３）と頭部（２ｂ）との間には、間隙が
設けられているため、かしめ時にシール材に生じる変形
の吸収が可能であり、ひいてはシール材の破損の防止に
もつながる。従って、かしめ後に頭部が脱落することも
ない。After completion of the riveting, the plastically deformed portions of the head portion (2b) and the body portion (1a) are covered with the sealing material (3) on the outside of the connected member (5). Since the sealing material (3) is interposed between the entire member including the plastically deformed portion of the body portion (1a) and the connected members (4) and (5), reliable airtightness and liquidtightness are ensured. Obtainable. Moreover, the flange portion (1b)
The collar portion (3b) of the seal material (3) is also interposed between the connecting member (4) and the connected member (4), and the entire rivet is electrically insulated from the connected members (4) and (5). Therefore, it is possible to reliably prevent the generation of rust due to the potential difference. Further, since a gap is provided between the seal material (3) and the head portion (2b), it is possible to absorb the deformation that occurs in the seal material during caulking, and thus to prevent the seal material from being damaged. Connect Therefore, the head does not fall off after crimping.
【００１６】尚、この考案は前記実施例にのみ限定され
るものではなく、請求の範囲を逸脱しない限り種々の変
形例をも包含し得る。例えば、前記実施例では、頭部
（２ｂ）により胴体部（１ａ）を押し拡げるよう塑性変
形させるタイプについて説明しているが、胴体部の外径
より大きな頭部により胴体部を圧潰するよう塑性変形さ
せるタイプのものにも同様に適用できるのは勿論であ
る。It should be noted that the present invention is not limited to the above-described embodiment, but may include various modifications without departing from the scope of the claims. For example, in the above-mentioned embodiment, the type in which the body portion (1a) is plastically deformed by the head portion (2b) to be expanded is described, but the plasticity portion is crushed by the head portion having a diameter larger than the outer diameter of the body portion. Of course, it can be similarly applied to a deformable type.
【００１７】[0017]
【考案の効果】以上のようにこの考案のブラインドリベ
ットによると、使用前において、マンドレルの軸状部の
少なくとも対向２箇所に設けたガイド突部が胴体部の内
面に接合しているので、マンドレルがスリーブから妄り
に抜脱することがなく、従って、シール材もスリーブか
ら抜脱しないので、各組毎にばらけることなく連結して
いることから管理性が非常に向上する。また、軸状部を
かしめ工具により手前側に引き出すときに、該軸状部の
前記切断部よりも軸の引き抜き方向前方における中心を
通る少なくとも対向２箇所に設けたガイド突部が胴体部
の内面に摺接し締結部を通過するので、軸状部を胴体部
の筒芯方向にずれることなく移動させることができ、胴
体部の塑性変形が周囲に均等に生じて確実なかしめ加工
を行える。また、シール材と頭部との間には、間隙が設
けられているため、かしめ時にシール材に生じる変形を
吸収することができシール材の破損の防止につながる。
更に、かしめ加工後は、頭部および胴体部の塑性変形部
分がシール材で被覆されているとともに、胴体部の塑性
変形部分を含む全体部分と被連結部材との間にシール材
が介在していることにより、確実な気密性及び液密性を
得ることができ、且つ頭部の脱落を防ぐことができる。
しかも、フランジ部と被連結部材との間にもシール材の
鍔部が介在していてリベット全体が被連結部材に電気的
絶縁状態になっているため、錆の発生を確実に防止する
ことかできる。特にこの考案は、ヨットの修理等のよう
に過酷な条件下で使用する場合に極めて顕著な効果を発
揮するものである。As described above, according to the blind rivet of the present invention, before use, the guide protrusions provided at least at two opposite positions of the shaft portion of the mandrel are joined to the inner surface of the body portion. Does not inadvertently slip out of the sleeve, and therefore the sealing material does not slip out of the sleeve either, so that each set is connected without dislodging, which greatly improves manageability. Further, when the shaft-shaped portion is pulled out to the front side by the caulking tool, the guide projections provided at least at two opposite positions passing through the center of the shaft-shaped portion forward of the cutting portion in the pull-out direction of the shaft are the inner surfaces of the body Since it is slidably contacted with and passes through the fastening portion, the shaft-like portion can be moved without being displaced in the cylinder core direction of the body portion, and the plastic deformation of the body portion is evenly generated in the periphery, so that reliable caulking can be performed. Further, since a gap is provided between the seal material and the head portion, the deformation caused in the seal material at the time of caulking can be absorbed and the damage of the seal material can be prevented.
Further, after the caulking process, the plastically deformed portions of the head and the body are covered with the sealing material, and the sealing material is interposed between the entire portion including the plastically deformed portion of the body and the connected member. As a result, reliable air tightness and liquid tightness can be obtained, and the head can be prevented from falling off.
Moreover, since the collar portion of the sealing material is interposed between the flange portion and the member to be connected and the entire rivet is electrically insulated from the member to be connected, it is possible to reliably prevent the occurrence of rust. it can. In particular, the present invention exerts a very remarkable effect when used under severe conditions such as repair of a yacht.
【図１】この考案の一実施例のかしめ加工前の断面図で
ある。FIG. 1 is a sectional view of an embodiment of the present invention before caulking.
【図２】同上、マンドレルを９０°異なる方向からみた
側面図である。FIG. 2 is a side view of the mandrel as seen from a direction different by 90 °.
【図３】同上、かしめ加工後の断面図である。FIG. 3 is a sectional view of the same after caulking.
１ スリーブ １ａ 胴体部 １ｂ フランジ部 ２ マンドレル ２ａ 軸状部 ２ｂ 頭部 ２ｄ 切断部 ２ｅ ガイド突部 ３ シール材 ３ｂ 鍔部 DESCRIPTION OF SYMBOLS 1 Sleeve 1a Body 1b Flange 2 Mandrel 2a Shaft 2b Head 2d Cutting 2e Guide protrusion 3 Sealing material 3b Collar
Claims (1)
るフランジ部が一体形成されたスリーブと、このスリー
ブの胴体部に他端側から挿通された軸状部の一端部に前
記胴体部の内径よりも大径の頭部が一体形成されたマン
ドレルとからなるブラインドリベットにおいて、前記軸
状部における前記頭部の近傍部位に、少なくとも一部が
小径となった切断部が形成され、該軸状部の前記切断部
よりも軸の引き抜き方向前方における中心を通る少なく
とも対向２箇所に、前記胴体部の内面に接合するガイド
突部が形成され、防水性、弾力性および電気絶縁性を有
する素材により有底円筒状の開口部に鍔部を一体に備え
た形状となったシール材を、前記頭部および前記胴体部
を前記頭部との間に間隙を設けてそれぞれ被覆するとと
もに前記鍔部を前記フランジ部の一面に接合するよう前
記スリーブに外嵌したことを特徴とするブラインドリベ
ット。1. A sleeve in which a flange portion that bulges like a collar is integrally formed at one end of a cylindrical body portion, and one end of a shaft-shaped portion that is inserted into the body portion of the sleeve from the other end side. In a blind rivet comprising a mandrel integrally formed with a head having a diameter larger than the inner diameter of the body portion, a cutting portion at least a part of which has a smaller diameter is formed in a portion of the shaft-like portion near the head. And the cutting portion of the shaft-shaped portion
Guide projections that are joined to the inner surface of the body are formed at at least two opposite locations that pass through the center in the front of the shaft withdrawal direction , and have a bottomed cylindrical shape made of a material that is waterproof, elastic, and electrically insulating. A sealing material having a shape integrally provided with an opening in the opening is coated with a gap between the head portion and the body portion with the head portion, and the flange portion is covered with one surface of the flange portion. A blind rivet fitted onto the sleeve so as to be joined to the blind rivet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991066273U JPH0754655Y2 (en) | 1991-07-26 | 1991-07-26 | Blind rivet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991066273U JPH0754655Y2 (en) | 1991-07-26 | 1991-07-26 | Blind rivet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0512727U JPH0512727U (en) | 1993-02-19 |
| JPH0754655Y2 true JPH0754655Y2 (en) | 1995-12-18 |
Family
ID=13311074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991066273U Expired - Lifetime JPH0754655Y2 (en) | 1991-07-26 | 1991-07-26 | Blind rivet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0754655Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2383107B (en) * | 2001-12-14 | 2004-10-27 | Emhart Llc | Improved blind rivet |
| GB2443640B (en) * | 2006-11-09 | 2009-02-25 | Textron Fastening Syst Ltd | Sealing Plug |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51101469U (en) * | 1975-02-07 | 1976-08-14 | ||
| JPS6164508U (en) * | 1984-10-02 | 1986-05-01 |
-
1991
- 1991-07-26 JP JP1991066273U patent/JPH0754655Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0512727U (en) | 1993-02-19 |
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|---|---|---|---|
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| EXPY | Cancellation because of completion of term |