JP3668961B2

JP3668961B2 - Fastener

Info

Publication number: JP3668961B2
Application number: JP19369399A
Authority: JP
Inventors: 栄一井口; 直吉高松
Original assignee: マルマン株式会社; 光洋ファスナー株式会社
Priority date: 1999-07-07
Filing date: 1999-07-07
Publication date: 2005-07-06
Anticipated expiration: 2019-07-07
Also published as: JP2001020923A

Description

【０００１】
【発明の属する技術分野】
本発明は、分解、組立が便利な締結具に関する。
【０００２】
【従来の技術】
上部につば部を有し下部に割溝部を有する有底中空軸状の鋲体を設け、この鋲体内にピンを打込んでその有底の割溝部を拡開して係止させるブラインドリベットが知られている。
【０００３】
【発明が解決しようとする課題】
しかし、この種のブラインドリベットは、分解する際にピンを鋲体のフランジ部側より引抜くようにしたものであって、鋲体の割溝部側はブラインドになっていてその側からは引き抜き作業をすることができないものである。
【０００４】
しかも、仮にピンの下端部を押して鋲体とピンを分離したとしても、その端面は凸面であったり、面取りが施こされていたりするので、端面を先の尖った物で押した場合に滑ってうまく押すことができないと共に、時には手をけがすることがあった。
【０００５】
更に、鋲体とピンは、締結するまではバラバラに置かれ、締結時に鋲体とピンを取り出してこれを結合するために手間がかかり、また締結具が小さい場合（特にピンが小さい場合）には、落とし易く、そのために紛失しまうことがあった。
【０００６】
本発明は、従来のブラインドリベットとは異種の締結具を提供しようとするものであって、締結具本体からピンを安全かつ確実に外すことができ、しかも分解、組立が簡便にでき、交換が容易にできる締結具を提供しようとするものである。
【０００７】
【課題を解決するための手段】
本発明は、上部に頭部を有し下部に係止部を有する締結具本体と、該締結具本体に形成した孔に挿入し上記係止部を外方へ押し拡げて係止させるピンを備え、そのピンの軸部の下部端面部に円錐状もしくは半球状の凹部を設け、この凹部内面を押すことによってピンを安全かつ容易に抜き出すことができ、その交換が容易にできるようにしている。
【０００８】
また、本発明は、上記締結具本体の内周面またはピンの外周面に突部を設け、締結前に締結具本体に上記ピンを仮止めしておくことができるものである。
【０００９】
更に、本発明は、上記締結具本体の頭部をテーパー状に形成し、その頭部下面に形成した斜面部を変形可能な軟質の締結部材の取付孔周縁部の押し当て、この周縁部を変形することによって上記頭部が表面より必要以上に突出しないようにしている。
【００１０】
【発明の実施の形態】
締結具（１）は、軸部（２）を有し、該軸部の中心に孔（３）を形成した締結具本体（４）と、この孔（３）に挿入するピン（５）を備えている。
【００１１】
締結具本体（４）の上部には、頭部（６）が設けられ、又締結具本体（４）の下部には、上記ピン（５）を摩擦力によって係止するように軸部（２）の孔（３）内に突出部（７）を形成した係止部（８）が設けられている。
なお、上記締結具本体（４）の下部には、溝（９）が形成され、この締結具本体（４）の孔（３）にピン（５）を挿入した際に、ピンの下端部が係止部（８）の突出部（７）に当ってこの係止部を外方に拡げる。
【００１２】
締結具本体（４）の頭部（６）は、その中心側が厚くなるようにテ−パ−状に形成され、これによって頭部の下面に斜面部(10)が形成されているので、上記締結具本体を変形可能な軟質の締結部材(11)と硬質の被締結部材(12)の取付孔(13)、(14)に挿入し（図２）、その頭部（６）を押圧すると、頭部の下面に形成した斜面部(10)が上記軟質の締結部材(11)の取付孔(13)の周縁部(15)を押圧し、周縁部を頭部の斜面部(10)に対応して斜面に変形させる（図３）。
【００１３】
ここで、締結具本体（４）の孔（３）にピン（５）を挿入すると、ピンの下端部が上記係止部（８）の突出部（７）に当り、係止部（８）を外方に拡げる。
この係止部（８）の拡開によって、係止部（８）が被締結部材(12)に係合し、締結部材(11)と被締結部材(12)が締結される（図４）。
【００１４】
実施例では、上記係止部の突出部（７）に曲面を設け、この曲面にピンを当てて係止部を円滑に外方へ拡げるようにしているが、この曲面は係止部の突出部（７）またはピン（５）の下端部のいずれか一方に設けるようにしてもよい。
【００１５】
なお、上記ピン（５）は、上部に頭部(16)を有し、この頭部を上記締結具本体（４）の上部に形成した皿状の穴(17)に係合するようにしているが、このピンの頭部(16)と、締結具本体の穴(17)は省略してもよい。
【００１６】
いずれにしても、締結後は、締結具本体（９）の上面とピン(10)の上面がほぼ同一面となり、しかも締結具の頭部の一部が上記締結部材(11)の取付孔(13)の周縁部(15)に食込んで頭部が表面より殆ど突出しない状態となるので、頭部が邪魔にならず、見栄えも良い。
【００１７】
図６に示すものは、締結具本体（４）の内周面にわずかに内面に突出する凸部(18)を設けた場合で、ピン（５）を予め締結具本体の孔（３）に差し込み、ピンの下端部を凸部(18)の位置より少し先まで挿入することによって仮止めしているものである。
【００１８】
なお、上記凸部(18)の表面を曲面（断面半円状等）にしておくと、ピン（５）を差し込んだ際に抵抗が少なくて好ましいが、摩擦抵抗の少ない形状のものであれば種々の形状のものを用いることができ、又締結具本体の内周面に帯状あるいは点状等と連続あるいは断続状態に形成することができる。
【００１９】
締結具（１）の締結状態を解除する場合は、ピン（５）の端部を突いてピンを部（６）側へ押し出せばよいが、その際にピンの端面部(19)に、円錐状もしくは半球状に形成した凹部(20)を設けておくと、先の尖った棒(21)の先端部が凹部(20)に案内されるので、ピンの端面より外れることがなくピンを楽にかつ確実に押し出すことができる。
【００２０】
なお、上記締結具は、金属材またはプラスチック材その他の材料で形成することができる。
【００２１】
【発明の効果】
本発明は、締結具のピン軸部の下部端面部に円錐状もしくは半球状の凹部を設けているので、その凹部に棒の先端部等を当てて押すことができ、その際先端部が凹部に案内され外れることがないので、ピンを確実かつ安全に外すことができ、その締結具の交換を容易にすることができる。
【００２２】
また、締結具本体の内周面に凸部を設けているので、締結する際に予め締結具本体にピンを仮止めしておくことができ、ピンを途中で紛失したりバラバラになったりすることがなく、締結の作業を円滑にかつ迅速にすることができる。
【００２３】
更に、締結具の頭部を中心側が厚くなるようにテ−パ−状に形成しその頭部の下面にも斜面部を形成しているので、その頭部下面の傾斜部を軟質の締結部材の取付孔の周縁部に押し当て、その周縁部を変形させて軟質の締結部材と硬質の締結部材を締結することができ、締結具の頭部を表面より殆ど突出させない状態で締結されるので見栄えがよく、しかも頭部のつけ根部分が厚くなっているので、丈夫であり、軟質の締結部材の取付孔の周縁部を十分に変形することができ、その上その変形された締結部材の取付孔周縁部の弾発作用によって強く締結することができ、緩まない。
【図面の簡単な説明】
【図１】締結具の分解斜面図である。
【図２】締結部材と被締結部材の取付孔に締結具を挿入する状態を示す断面図である。
【図３】締結部材の取付孔周縁部に、締結具の締結具本体を押圧して係合する状態を示す断面図である。
【図４】締結部材と被締結部材を締結具で締結した状態を示す断面図である。
【図５】締結具の締結具本体のを示す拡大断面図である。
【符号の説明】
１締結具３孔４締結具本体５ピン８係止部
９溝１０斜面部１３、１４取付孔１８凸部２０凹部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fastener that is easy to disassemble and assemble.
[0002]
[Prior art]
A blind rivet is provided with a bottomed hollow shaft-shaped housing having a collar portion at the top and a split groove portion at the bottom, and a pin is driven into the housing to expand and lock the bottomed groove portion. Are known.
[0003]
[Problems to be solved by the invention]
However, this kind of blind rivet is such that the pin is pulled out from the flange part side of the housing when disassembling, and the split groove side of the housing is blind, and pulling out from that side It is something that cannot be done.
[0004]
Moreover, even if the lower end of the pin is pressed and the housing and the pin are separated, the end face is convex or chamfered, so it slips when the end face is pressed with a pointed object. I couldn't push it well and sometimes hurt my hand.
[0005]
Furthermore, the housing and the pin are placed apart until they are fastened, and it takes time to take out the housing and the pin and join them together at the time of fastening, and when the fastener is small (especially when the pin is small). Was easy to drop and was therefore lost.
[0006]
The present invention is intended to provide a fastener that is different from the conventional blind rivet, and can safely and reliably remove the pin from the fastener body, and can be easily disassembled and assembled, and can be replaced. It is an object to provide a fastener that can be easily formed.
[0007]
[Means for Solving the Problems]
The present invention includes a fastener main body having a head at an upper portion and a locking portion at a lower portion, and a pin that is inserted into a hole formed in the fastener main body and extends and locks the locking portion outward. Provided, a conical or hemispherical concave portion is provided in the lower end surface portion of the shaft portion of the pin, and the pin can be safely and easily pulled out by pushing the inner surface of the concave portion, so that the replacement can be easily performed. .
[0008]
Moreover, this invention can provide a protrusion in the inner peripheral surface of the said fastener main body, or the outer peripheral surface of a pin, and can fix the said pin temporarily to a fastener main body before fastening.
[0009]
Further, according to the present invention, the head portion of the fastener body is formed in a tapered shape, the inclined portion formed on the lower surface of the head portion is pressed against the peripheral portion of the mounting hole of the flexible fastening member, and the peripheral portion is By deforming, the head is prevented from protruding more than necessary from the surface.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The fastener (1) has a shaft portion (2), a fastener body (4) having a hole (3) formed at the center of the shaft portion, and a pin (5) to be inserted into the hole (3). I have.
[0011]
A head (6) is provided at the upper part of the fastener body (4), and a shaft part (2) is provided at the lower part of the fastener body (4) so as to lock the pin (5) by frictional force. ) Is provided with a locking portion (8) in which a protruding portion (7) is formed.
A groove (9) is formed in the lower portion of the fastener body (4), and when the pin (5) is inserted into the hole (3) of the fastener body (4), the lower end portion of the pin is The locking portion is expanded outward by hitting the protrusion (7) of the locking portion (8).
[0012]
The head (6) of the fastener body (4) is formed in a taper shape so that the center side thereof is thick, and the inclined surface (10) is formed on the lower surface of the head. When the fastener body is inserted into the mounting holes (13) and (14) of the flexible fastening member (11) and the hard fastening member (12) (FIG. 2) and the head (6) is pressed. The inclined surface portion (10) formed on the lower surface of the head presses the peripheral edge portion (15) of the mounting hole (13) of the soft fastening member (11), and the peripheral edge portion becomes the inclined surface portion (10) of the head portion. Correspondingly, it is deformed into a slope (FIG. 3).
[ 0013 ]
Here, when the pin (5) is inserted into the hole (3) of the fastener body (4), the lower end portion of the pin hits the protruding portion (7) of the locking portion (8), and the locking portion (8). Expand outward.
By expanding the locking portion (8), the locking portion (8) is engaged with the fastened member (12), and the fastening member (11) and the fastened member (12) are fastened (FIG. 4). .
[ 0014 ]
In the embodiment, the protruding portion (7) of the locking portion is provided with a curved surface, and a pin is applied to the curved surface to smoothly spread the locking portion outward. You may make it provide in any one of the lower end part of a part (7) or a pin (5).
[ 0015 ]
The pin (5) has a head (16) at the top, and this head engages with a dish-shaped hole (17) formed at the top of the fastener body (4). However, the pin head (16) and the fastener body hole (17) may be omitted.
[ 0016 ]
In any case, after fastening, the upper surface of the fastener body (9) and the upper surface of the pin (10) are substantially flush with each other, and a part of the head of the fastener is attached to the mounting hole (11) of the fastening member (11). Since the head is hardly protruded from the surface by biting into the peripheral portion (15) of 13), the head does not get in the way and looks good.
[ 0017 ]
FIG. 6 shows a case in which a convex portion (18) slightly protruding from the inner surface is provided on the inner peripheral surface of the fastener body (4), and the pin (5) is previously inserted into the hole (3) of the fastener body. The pin is temporarily fixed by inserting the lower end portion of the pin a little beyond the position of the convex portion (18).
[ 0018 ]
In addition, it is preferable that the surface of the convex portion (18) is a curved surface (such as a semicircular cross section) because the resistance is low when the pin (5) is inserted, but any shape having a low frictional resistance can be used. Various shapes can be used, and the inner peripheral surface of the fastener body can be formed continuously or intermittently in the form of a strip or dots.
[ 0019 ]
To release the fastening state of the fastener (1), the end of the pin (5) may be pushed and the pin pushed out to the part (6) side, but at that time, the pin end face (19) If the conical or hemispherical concave portion (20) is provided, the tip of the pointed bar (21) is guided to the concave portion (20), so that the pin is not detached from the end face of the pin. It can be pushed out easily and reliably.
[ 0020 ]
In addition, the said fastener can be formed with a metal material, a plastic material, or another material.
[ 0021 ]
【The invention's effect】
In the present invention, since the conical or hemispherical concave portion is provided in the lower end surface portion of the pin shaft portion of the fastener, the tip portion of the rod can be pressed against the concave portion. Therefore, the pin can be removed securely and safely, and the fastener can be easily replaced.
[ 0022 ]
Moreover, since the convex part is provided in the inner peripheral surface of the fastener main body, when fastening, the pin can be temporarily fixed to the fastener main body in advance, and the pin can be lost or fall apart in the middle. This makes it possible to smoothly and quickly perform the fastening operation.
[ 0023 ]
Further, since the head portion of the fastener is formed in a taper shape so that the center side is thick and the inclined surface portion is formed on the lower surface of the head portion, the inclined portion on the lower surface of the head portion is made of a soft fastening member. Because it is pressed against the peripheral edge of the mounting hole and the peripheral edge is deformed to fasten the soft fastening member and the hard fastening member, the fastening head is fastened with almost no protrusion from the surface. It looks good and the base part of the head is thick, so it is strong and can sufficiently deform the peripheral part of the mounting hole of the soft fastening member. It can be strongly fastened by the elastic action of the hole periphery and does not loosen.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a fastener.
FIG. 2 is a cross-sectional view showing a state in which a fastener is inserted into an attachment hole between a fastening member and a member to be fastened.
FIG. 3 is a cross-sectional view showing a state in which a fastener body of a fastener is pressed and engaged with a peripheral portion of an attachment hole of a fastening member.
FIG. 4 is a cross-sectional view showing a state in which a fastening member and a member to be fastened are fastened with a fastener.
FIG. 5 is an enlarged sectional view showing a fastener body of the fastener.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Fastener 3 Hole 4 Fastener main body 5 Pin 8 Locking part 9 Groove 10 Slope part 13, 14 Attachment hole 18 Convex part 20 Concave part

Claims

A fastener body having a shaft portion having a head at the top and a hole at the center, a groove formed in the longitudinal direction of the shaft portion at the bottom of the shaft portion, and a locking portion protruding into the hole of the shaft portion When, inserted into the hole of the fastener body includes a pin engaged with spread the locking portion outward, the recess is provided a conical or hemispherical recess in the lower end face of the shaft portion of the pin A pin is pulled out by pressing the inner surface, and a continuous belt-like convex portion is provided on the inner peripheral surface of the shaft portion of the fastener body or the outer peripheral surface of the pin, and the head portion of the fastener body is provided. It is formed in a taper shape so that the center side is thick, and a slope is formed on the lower surface of the head, and the slope is pressed against the peripheral edge of the mounting hole of a soft fastening member that can be deformed. Like fasteners.