JPH0135206B2 - - Google Patents
Info
- Publication number
- JPH0135206B2 JPH0135206B2 JP58240690A JP24069083A JPH0135206B2 JP H0135206 B2 JPH0135206 B2 JP H0135206B2 JP 58240690 A JP58240690 A JP 58240690A JP 24069083 A JP24069083 A JP 24069083A JP H0135206 B2 JPH0135206 B2 JP H0135206B2
- Authority
- JP
- Japan
- Prior art keywords
- frp
- bolt
- convex
- epoxy resin
- threaded portion
- 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
Links
- 239000011521 glass Substances 0.000 claims description 25
- 239000003822 epoxy resin Substances 0.000 claims description 15
- 229920000647 polyepoxide Polymers 0.000 claims description 15
- 239000004744 fabric Substances 0.000 claims description 14
- 238000010030 laminating Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 description 17
- 230000007797 corrosion Effects 0.000 description 16
- 239000002184 metal Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 239000003365 glass fiber Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000010292 electrical insulation Methods 0.000 description 5
- 229910000746 Structural steel Inorganic materials 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012777 electrically insulating material Substances 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- -1 stainless steel Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Reinforced Plastic Materials (AREA)
- Moulding By Coating Moulds (AREA)
Description
【発明の詳細な説明】
本発明は腐食または電食を防止するとともに、
電気的に絶縁物で、しかも機械的強度の大きい
FRPのねじ構造と、そのねじ構造によるボルト
ナツトに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention prevents corrosion or electrolytic corrosion, and
Electrically insulating material with high mechanical strength
This article concerns the screw structure of FRP and bolts and nuts based on that screw structure.
従来の、アンカーボルトなどボルトナツト類は
主として鉄に溶融亜鉛メツキを施したものや、ス
テンレス等の不銹金属を使用したものが、一般に
使用されているが、トンネル内等の、常に漏水や
セメントのアルカリ等に侵される場所や、沿岸部
や船舶等のように海水に侵されるところ、あるい
は地中埋設物等では、腐食や電食が激しく、これ
を防止することは困難であり、短期間で取り換え
ざるを得なかつた。 Conventional bolts and nuts such as anchor bolts are generally made of hot-dip galvanized steel or non-rusting metals such as stainless steel, but they are constantly used in tunnels etc. due to water leakage and cement build-up. Corrosion and electrolytic corrosion are severe in places that are attacked by alkalis, coastal areas, ships, etc., or underground objects, and it is difficult to prevent this from occurring in a short period of time. I had no choice but to replace it.
そして、これに要する労力や費用の負担は大き
く、その防食対策が強く求められていた。 This requires a large amount of labor and expense, and there has been a strong demand for anti-corrosion measures.
そのため、腐食や電食に侵され難い、ポリカー
ボネートやナイロン等の樹脂製のものも考えられ
たが、機械的強度が弱く、アンカーボルト等とし
ての引張り強度を満足することはできなかつた。 For this reason, materials made of resins such as polycarbonate and nylon, which are resistant to corrosion and electrolytic corrosion, have been considered, but they have weak mechanical strength and cannot satisfy the tensile strength required for anchor bolts and the like.
更に機械的強度の優れたガラスロービングをエ
ポキシ樹脂で結合したFRPロツド等の樹脂材で、
引張り強さが70〜100Kg／mm2程度あり、構造用鋼
の34〜50Kg／mm2を上廻る強度を有している樹脂材
もあるが、アンカーボルト等に使用する場合は、
そのねじ構造の強度に問題があつた。 In addition, resin materials such as FRP rod, which is made by combining glass roving with excellent mechanical strength with epoxy resin,
There are resin materials with a tensile strength of about 70 to 100 kg/mm 2 , which exceeds the 34 to 50 kg/mm 2 of structural steel, but when used for anchor bolts etc.
There was a problem with the strength of the screw structure.
即ち、ねじ切りの際、ガラス繊維を寸断するた
め、ねじ部の強度が、極端に低下して、アンカー
ボルト等、強度を要するボルト等に使用すること
はできなかつた。 That is, since the glass fibers are shredded during thread cutting, the strength of the threaded portion is extremely reduced, making it impossible to use it for bolts that require strength, such as anchor bolts.
これは、従来のメートルねじや台形ねじ、ある
いは鋸歯ねじ等においては、すべてねじたての
際、FRPロツドのガラス繊維を、ねじ山で寸断
することと、
これら従来のねじ構造では、引張り力はねじ山
に剪断力として働く構造のため、FRP自体の持
つ強度を著しく減殺して、FRP等のねじ構造に
使用できるものではなかた。 This is because in conventional metric threads, trapezoidal threads, serrated threads, etc., the glass fibers of the FRP rod are shredded by the threads when freshly screwed, and in these conventional thread structures, the tensile force is Because it has a structure that acts as a shearing force on the threads, it significantly reduces the strength of FRP itself, making it impossible to use it in screw structures such as FRP.
従つて、折角の構造用鋼以上の機械的強度と優
れた防食性ならびに電気絶縁性を有しながら、そ
の用途はFRP自体としてそのまま使用するほか
なく、その用途は限定されていた。 Therefore, although it has mechanical strength greater than that of structural steel and excellent corrosion resistance and electrical insulation properties, its use has been limited as it has no choice but to be used as it is as FRP itself.
また、FRPロツドからボルトを切削加工する
場合も、ボルト頭部を作り出す際に、頭部部分は
ガラス繊維が切断されるため、ボルト軸部から食
み出た頭部部分は、引張り強度が著しく低下し、
頭部としての機能を果たさず、ボルトとして使用
することができない現況である。 Also, when cutting bolts from FRP rods, the glass fibers in the head part are cut when creating the bolt head, so the head part that protrudes from the bolt shaft has a significant tensile strength. decreases,
The current situation is that it does not function as a head and cannot be used as a bolt.
なお、予めガラスロービングを、ボルト形状に
型内に配置せしめて、これにエポキシ樹脂を注入
して結合する方法等も考えられるが、生産コスト
面で経済的でなく、一般に使用できるものではな
かつた。 Although it is possible to place glass rovings in the shape of bolts in advance in a mold and then inject epoxy resin into them to bond them together, this method is not economical in terms of production costs and cannot be used generally. .
本発明は、これらの問題点を解決し、優れた防
食性と機械的強度、ならびに電気絶縁性を有する
FRPロツドの諸特性を減殺することなく、金属
や樹脂その他の構造材等の機械的接合を可能にす
るFRPのねじ構造と、ボルトナツトを経済的に
提供するものである。 The present invention solves these problems and has excellent corrosion resistance, mechanical strength, and electrical insulation.
The present invention provides an economical FRP screw structure and bolt nut that enables mechanical joining of metals, resins, and other structural materials without reducing the characteristics of the FRP rod.
第１図にしめすように、FRPのねじ部におい
て、軸方向の引張り力に対して、末広がりの急勾
配の一方向傾斜面２で、これを押圧して受け止め
るようにした、急勾配板状円錐台３の緩斜積み上
げ形状の凸ねじ部４と、この凸ねじ部の一方向傾
斜面２に密接して、これを押圧螺合する逆テーパ
の一方向傾斜面２′を螺設した凹ねじ部５からな
る、FRPのねじ構造である。 As shown in Fig. 1, the threaded part of the FRP is a steeply sloped plate-shaped cone that presses against the tensile force in the axial direction with a steeply sloped unidirectional inclined surface 2 that widens toward the end. A concave screw threaded with a convex threaded portion 4 of a gently stacked shape of the base 3 and a reverse taper unidirectionally inclined surface 2' that presses and screws together the convex threaded portion 4 of the convex threaded portion in close contact with the one-way inclined surface 2 of the convex threaded portion. This is an FRP screw structure consisting of part 5.
このねじ構造によるボルトナツトとしては例え
ば、第１図に示すように、ガラスロービングまた
はガラスクロスをエポキシ樹脂で結合したFRP
ロツドに、軸方向の引張り力を、急勾配の一方向
傾斜面２で受け止めるようにした、急勾配板状円
錐台３の緩斜積み上げ形状の凸ねじ部４を有する
ボルト１と、このボルト１の凸ねじ部４の、急勾
配の一方向傾斜面２に密に螺合する凹ねじ部５を
有する、ガラスクロスをエポキシ樹脂で結合した
FRPナツトからなるものである。 An example of a bolt/nut with this threaded structure is an FRP made by bonding glass roving or glass cloth with epoxy resin, as shown in Figure 1.
A bolt 1 having a convex threaded portion 4 in the shape of a gently stacked plate-shaped truncated cone 3 with a steep slope, which receives the tensile force in the axial direction on a steeply sloped one-way inclined surface 2; Glass cloth is bonded with epoxy resin and has a concave screw portion 5 that tightly screws into the steeply sloped one-way inclined surface 2 of the convex screw portion 4 of the glass cloth.
It is made of FRP nuts.
この場合、凸ねじ部４と凹ねじ部５のねじ構造
は、第１図に示すような急勾配板状円錐台の緩斜
積み上げ形状とする。 In this case, the thread structure of the convex threaded portion 4 and the concave threaded portion 5 is a gently stacked shape of steeply sloped plate-shaped truncated cones as shown in FIG.
この急勾配板状円錐台の厚さは、ねじ部の所要
引張強度に応じて設定するが、例えばφ16前後の
FRPボルトでは、５ミリメートル前後厚の緩斜
積み上げ形状で、締付トルクやねじ強度を十分に
付与できる。 The thickness of this steeply sloped plate-like truncated cone is set according to the required tensile strength of the threaded part, but for example, a thickness of around φ16
FRP bolts have a gently stacked shape with a thickness of around 5 mm, which can provide sufficient tightening torque and thread strength.
もし、仮に急勾配板状円錐台の厚さを、極端に
厚くして、急斜形状とした場合は、ねじ締めの場
合の締め付け回数は減少できるが、締付トルクや
ねじ強度は大きく減少して、ねじ構造の機能を喪
失し、ねじ構造としては使用できるものではな
い。 If the thickness of the steeply sloped plate-shaped truncated cone is made extremely thick to form a steeply sloped shape, the number of times of screw tightening can be reduced, but the tightening torque and screw strength will be greatly reduced. As a result, the screw structure loses its function and cannot be used as a screw structure.
また、このねじの螺合数を増加して、ねじ強度
を増加しようとすれば、凹ねじ部の厚さを極端に
厚くする要があり、実際的でない。 Furthermore, if it is attempted to increase the screw strength by increasing the number of threaded engagements of this screw, the thickness of the concave screw portion must be made extremely thick, which is not practical.
第２図は急勾配円錐台３の底部に若干の円柱部
７を残した場合である。この円柱部７は大きくと
ると、ねじ山の耐剪断力は増すが、引張力を受け
止める一方向傾斜面２の表面積が減少する結果と
なるので、総合的に強度がでるよう選定する要が
ある。 FIG. 2 shows a case where some cylindrical portion 7 is left at the bottom of the steeply sloped truncated cone 3. If this cylindrical portion 7 is made large, the shear resistance of the thread will increase, but the surface area of the unidirectionally inclined surface 2 that receives the tensile force will decrease, so it must be selected to provide overall strength. .
次にボルト１の頭部８は、第１図、第２図は円
錐台形として頭部の引張り強度を持たせてある
が、通常のボルト形状とするためには、第３図に
しめすように、第１図、第２図のボルト１の頭部
にあたる部分に、下方のボルト部とは逆テーパ
に、急勾配板状円錐台３の緩斜積み上げ形状に、
凸ねじ部４′を設け、この凸ねじ部４′に密に螺合
する、凹ねじ部５′を有するガラスクロスをエポ
キシ樹脂で結合したFRP頭部９を、エポキシ樹
脂を併用した螺合接着一体化する。 Next, the head 8 of the bolt 1 is shaped like a truncated cone in Figures 1 and 2 to give it tensile strength, but in order to have a normal bolt shape, it should be shaped as shown in Figure 3. , in the part corresponding to the head of the bolt 1 in FIGS. 1 and 2, tapered inversely to the lower bolt part, in the shape of a gently stacked plate-shaped truncated cone 3 with a steep slope,
A convex threaded portion 4' is provided, and the FRP head 9 is bonded with epoxy resin to a glass cloth having a concave threaded portion 5' that is closely screwed into this convex threaded portion 4', and is bonded together with epoxy resin. Unify.
FRP頭部９の形状は、丸形、六角形等、所要
の形状とする。 The shape of the FRP head 9 may be any desired shape, such as round or hexagonal.
なお、FRPナツト６およびFRP頭部９の厚さ
を増すことにより、引張り強度を増すことができ
るが、所要の引張り強度に見合つた厚さとしてコ
ンパクト化を計ることができる。 Note that the tensile strength can be increased by increasing the thickness of the FRP nut 6 and the FRP head 9, but compactness can be achieved by setting the thickness commensurate with the required tensile strength.
本発明のFRPのねじ構造は上記構造とするこ
とにより、FRPロツドのねじたてによる強度低
下を少なくして、引張強度を有するFRPボルト
ナツトの製作、または、FRPロツドやFRP板あ
るいは金属などの相互間、あるいは他の構造用材
との間の、防食、絶縁、高強度の結合を可能にす
るものである。 By adopting the above-mentioned structure, the FRP thread structure of the present invention can reduce the decrease in strength due to freshly screwed FRP rods, and can be used to manufacture FRP bolts and nuts with tensile strength, or to connect FRP rods, FRP plates, metals, etc. It enables corrosion protection, insulation, and high-strength bonding between materials and other structural materials.
次に本発明のFRPのねじ構造において、最も
大切な引張り強度を、飛躍的に向上せしめたの
は、第１図に示すように、ねじ構造に対する引張
力を、ねじ軸方向に対して末広がりの、急勾配の
一方向傾斜面２で受け、この引張力を、軸を押圧
せしめるように受け止める構造としたことによる
ものである。 Next, in the FRP screw structure of the present invention, the most important tensile strength has been dramatically improved, as shown in Fig. 1. This is due to the structure in which the tensile force is received by the steeply sloped one-way inclined surface 2, and this tensile force is received so as to press the shaft.
従来の、メートルねじや、台形ねじ、あるいは
鋸歯ねじ等においては、これらのねじ構造を
FRPロツドに適用した場合は、FRPのガラス繊
維は、ねじ山により寸断され、しかも、引張力は
各ねじ山に剪断力として、まともに働くため、
FRPねじに致命的なダメージを与える結果とな
つた。 For conventional metric threads, trapezoidal threads, or serrated threads, these thread structures are
When applied to FRP rods, the FRP glass fibers are shredded by the threads, and the tensile force acts as shearing force on each thread.
This resulted in fatal damage to the FRP screws.
これを本発明では急勾配の一方向傾斜面２と
２′の広い傾斜面接触で、軸心への押圧力として
受けるようにして、凸ねじ部４と凹ねじ部５との
間に働く剪断力を、極力減少する構造としたこと
によるものである。 In the present invention, this is received as a pressing force toward the shaft center by the wide slope contact between the steeply sloped unidirectionally inclined surfaces 2 and 2', and the shear acting between the convex threaded portion 4 and the concave threaded portion 5 is applied. This is due to the structure that reduces force as much as possible.
試験結果では、第１図にしめすようなボルト１
に、ガラスロービング70wt％をエポキシ樹脂で
結合したFRPロツドを使用した場合、FRPロツ
ド自体は、圧縮強さ50Kg／mm2、引張り強さ60Kg／
mm2と、構造用鋼の34〜50Kg／mm2と同程度以上の強
度を有しているにかかわらず、これに、例えば従
来のメートルねじを設けた場合には、引張り強さ
は、約1/20の３Kg／mm2前後で、ねじ山は破損し
た。 The test results show that bolt 1 as shown in Figure 1
When using an FRP rod with 70wt% glass roving bonded with epoxy resin, the FRP rod itself has a compressive strength of 50Kg/ mm2 and a tensile strength of 60Kg/mm2.
mm 2 and has a strength comparable to or higher than that of structural steel at 34 to 50 Kg/mm 2. However, if a conventional metric thread is provided, for example, the tensile strength is approximately The screw thread was damaged at around 3Kg/ mm2 of 1/20.
、これに対し、第１図に示すような本発明のね
じ構造においては、引張強度は30Kg／mm2程度と構
造用鋼に近い強度を示し、充分使用に耐える結果
を得た。 On the other hand, in the screw structure of the present invention as shown in FIG. 1, the tensile strength was approximately 30 Kg/mm 2 , which is close to that of structural steel, and was sufficiently durable for use.
また、本発明のFRPボルト１の場合には、引
張力がFRPボルト１の軸心への圧縮力として働
くもので、引張強度と圧縮強度に強いガラスロー
ビングか、またはガラスクロスを、所要径に巻く
か、あるいは、ガラスロービングとガラスクロス
を交互に積層するなどして組み合わせたガラス繊
維をエポキシ樹脂で結合したFRPロツドを使用
するが、FRPボルト自体のねじりトルクを増す
うえでは、ガラスクロスを巻いたものや、ガラス
ロービングとガラスクロスを組み合わせたものを
使用すればよい。 In addition, in the case of the FRP bolt 1 of the present invention, the tensile force acts as a compressive force toward the axis of the FRP bolt 1, and glass roving or glass cloth with strong tensile and compressive strengths is made to the required diameter. FRP rods are used in which glass fibers are bonded with epoxy resin by winding or by alternately laminating glass roving and glass cloth, but in order to increase the torsional torque of the FRP bolt itself, wrapping glass cloth is recommended. You can use a glass roving or a combination of glass roving and glass cloth.
次にFRPナツト６においては、引張力はFRP
ナツトを押し広げる方向に働くので、これに強い
ガラスクロスを積層して、エポキシ樹脂で結合し
たFRPを使用することにより、引張強度は30
Kg／mm2以上を得ることができる。 Next, in FRP nut 6, the tensile force is FRP
Since it works in the direction of spreading the nut, by laminating strong glass cloth on it and using FRP bonded with epoxy resin, the tensile strength is 30
Kg/mm 2 or more can be obtained.
更に、FRPボルト１において、ガラスロービ
ング層とガラスクロス層を同心円状に積層して、
エポキシ樹脂で結合したFRPロツドに、本発明
のねじ構造を適用することにより、ねじり強度と
引張り強度ともに優れたFRPボルトとすること
ができる。 Furthermore, in the FRP bolt 1, a glass roving layer and a glass cloth layer are laminated concentrically,
By applying the thread structure of the present invention to an FRP rod bonded with epoxy resin, an FRP bolt with excellent torsional strength and tensile strength can be obtained.
また、ガラス繊維のかわりに炭素繊維を使用す
るか、両者を使用したFRPロツドを使用すれば
更に強度増加を計ることができ、用途に応じた
FRPロツドを使用することにより、強度面と経
済面ともに満足することができる。 Furthermore, strength can be further increased by using carbon fiber instead of glass fiber, or by using an FRP rod that uses both.
By using FRP rods, both strength and economy can be satisfied.
次に本発明のボルトナツトの効果としては、ボ
ルトナツト双方に、FRPを使用したため、腐食
や電食に強く、しかも、金属に近い機械的強度を
付与できるので、土中に埋設して使用する場合
や、沿岸部や船舶など海水による腐食の激しい場
所での使用にも、腐食の心配がなく使用できるも
のである。 Next, as an effect of the bolt-nut of the present invention, since FRP is used for both parts of the bolt-nut, it is resistant to corrosion and electrolytic corrosion, and can be given mechanical strength close to that of metal, so it can be used buried in the ground. It can be used in places where corrosion is severe due to seawater, such as coastal areas and ships, without worrying about corrosion.
また、電気的に絶縁物のため、防食と機械的強
度のほか、電気絶縁性を必要とするような個所で
の使用においても、大きくその機能を発揮するも
のである。 Furthermore, since it is an electrically insulating material, it is highly effective when used in locations that require electrical insulation in addition to corrosion protection and mechanical strength.
更に本発明のボルトナツトは、ボルトあるいは
ナツト単体でも使用できる。例えば金属板に、防
食または電気絶縁用の樹脂またはセラミツク板を
接合する場合、金属板に本発明のねじ構造の螺孔
を設けておき、これに樹脂またはセラミツクス板
を、本発明のボルトにより、縫いつけて使用すれ
ば、金属部分が露出しない防食構造とすることが
できる。 Further, the bolt/nut of the present invention can be used as a bolt or a nut alone. For example, when joining a metal plate with a resin or ceramic plate for anticorrosion or electrical insulation, the metal plate is provided with a screw hole having the screw structure of the present invention, and the resin or ceramic plate is attached to this with the bolt of the present invention. By sewing it on, you can create a corrosion-resistant structure that does not expose the metal parts.
以上、本発明のねじ構造や、ボルトナツトを使
用することにより、従来、FRPロツトが非常に
優れた、防食力と機械的強度ならびに電気絶縁性
を有しながら、金属や他の樹脂などとの結合に良
い方法が無いため、FRPロツド単体として使用
するか、容器など一体成形品として、そのまま使
用される場合以外には、その用途が限定されてい
たものを、本発明のねじ構造やボルトナツトを使
用することにより、FRPロツド、FRP板、FRP
成形品ならびに、金属あるいはセラミツクス製品
など相互間の、結合を機械的強度を保ちながら容
易自在に組み合せ使用できるという、大きな効果
を発揮せしめることができるものである。 As described above, by using the screw structure and bolt/nut of the present invention, FRP rods can be bonded to metals, other resins, etc. while having excellent corrosion resistance, mechanical strength, and electrical insulation properties. Since there is no good way to do this, the thread structure and bolt nut of the present invention can be used for things that have limited uses other than when used as a single FRP rod or as an integrally molded product such as a container. By doing so, FRP rod, FRP board, FRP
It is possible to exhibit the great effect of being able to easily and freely combine molded products, metal or ceramic products, etc. while maintaining their mechanical strength.
更に急勾配の一方向傾斜面２の長さ（急勾配板
状円錐台の高さ）を、所用強度に応じて、適宜若
干増減することにより、小物から大きな構造物ま
で、適宜対応せしめて使用することができる等、
多くの優れた特徴を有するものである。 Furthermore, by slightly increasing or decreasing the length of the steeply sloped one-way inclined surface 2 (the height of the steeply sloped plate-shaped truncated cone), it can be used for everything from small items to large structures. can, etc.
It has many excellent features.
第１図、第２図は本発明の一部断面を示す説明
用例示図、第３図は本発明のねじ結合部の一部断
面を示す例示説明図。
１はFRPのボルト、２，２′は一方向傾斜面、
３は急勾配板状円錐台、４，４′は凸ねじ部、５，
５′は凹ねじ部、６はFRPのナツト、７は凸ねじ
部４の円柱部、８はFRPボルト１の円錐台形頭
部、９はFRP頭部。
FIGS. 1 and 2 are illustrative views showing a partial cross section of the present invention, and FIG. 3 is an exemplary explanatory view showing a partial cross section of a threaded joint portion of the present invention. 1 is an FRP bolt, 2 and 2' are unidirectional inclined surfaces,
3 is a steeply sloped plate-like truncated cone, 4 and 4' are convex threaded parts, 5,
5' is the concave threaded part, 6 is the FRP nut, 7 is the cylindrical part of the convex threaded part 4, 8 is the truncated conical head of the FRP bolt 1, and 9 is the FRP head.
Claims (1)
を、引張り方向に対して末広がりの急勾配の一方
向傾斜面で、この一方向傾斜面を押圧して受け止
めるようにした急勾配板状円錐台の緩斜積み上げ
形状の凸ねじ部と、この凸ねじ部の一方向傾斜面
に密接して、これを押圧螺合する逆テーパの一方
向傾斜面を螺設した凹ねじ部からなることを特徴
とするFRPのねじ構造。 ２ ガラスロービングまたはガラスクロスをエポ
キシ樹脂で結合させたFRPロツドの一端に、軸
方向の引張り力を、急勾配の一方向傾斜面で受け
止めるようにした急勾配板状円錐台の緩斜積み上
げ形状の、凸ねじ部を有するボルトと、このボル
トの急勾配の一方向傾斜面に密接して、これを押
圧螺合する凹ねじ部を有するガラスクロスを積層
してエポキシ樹脂で結合したFRPナツトからな
ることを特徴とするボルトナツト。 ３ 特許請求の範囲２のボルトナツトにおいて、
ボルト頭部を、下部の凸ねじ部と逆テーパの、急
勾配板状円錐台の緩斜積み上げ形状の凸ねじ部と
し、この凸ねじ部に密に螺合する凹ねじ部を有す
る、ガラスクロスをエポキシ樹脂で結合した
FRP頭部を、エポキシ樹脂を併用して螺合接着
して一体化したことを特徴とするボルトナツト。[Scope of Claims] 1. In the threaded part of FRP, the tensile force in the axial direction is received by pressing the steep slope in one direction that widens toward the pulling direction. A convex threaded portion in the shape of a gently stacked truncated cone in the form of a sloped plate, and a concave threaded portion having a one-way inclined surface of a reverse taper that presses and screws together the convex threaded portion in close contact with the one-way inclined surface of the convex threaded portion. An FRP screw structure characterized by consisting of. 2 At one end of the FRP rod, which is made by bonding glass roving or glass cloth with epoxy resin, a gently sloped stacked shape of steeply sloped plate-shaped truncated cones is attached to one end of the FRP rod, which is made by bonding glass roving or glass cloth with epoxy resin. , consists of an FRP nut made by laminating a bolt with a convex threaded part and a glass cloth with a concave threaded part that presses and screws together the bolt in close contact with the steep one-way inclined surface of the bolt and bonded with epoxy resin. Bolt Natsu is characterized by: 3 In the bolt nut of claim 2,
A glass cloth in which the bolt head has a convex thread in the shape of a gently stacked plate-like truncated cone with a reverse taper to the convex thread at the bottom, and a concave thread that tightly screws into the convex thread. bonded with epoxy resin
A bolt nut characterized by an FRP head that is integrated by threading and bonding together with epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58240690A JPS60132115A (en) | 1983-12-19 | 1983-12-19 | Screw structure made of frp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58240690A JPS60132115A (en) | 1983-12-19 | 1983-12-19 | Screw structure made of frp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60132115A JPS60132115A (en) | 1985-07-15 |
| JPH0135206B2 true JPH0135206B2 (en) | 1989-07-24 |
Family
ID=17063253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58240690A Granted JPS60132115A (en) | 1983-12-19 | 1983-12-19 | Screw structure made of frp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60132115A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100839936B1 (en) | 2006-07-19 | 2008-06-20 | 주식회사 엘앤에스메탈 | Bolt |
| JP2012026522A (en) * | 2010-07-23 | 2012-02-09 | Mitsubishi Motors Corp | Bolt and mounting structure of battery using the same |
| CN102555245A (en) * | 2012-02-13 | 2012-07-11 | 浙江鼎耐塑胶管阀有限公司 | Method for manufacturing hexagonal all-plastic corrosion-resistant bolt |
| CN103423274B (en) * | 2013-08-27 | 2015-07-08 | 南车株洲电力机车研究所有限公司 | Method of guaranteeing fan high-strength bolt pretightening force to be accurately exerted |
| CN103951951B (en) * | 2014-03-19 | 2016-05-11 | 淮南市金德实业有限公司 | A kind of reflect type glass fibre reinforced plastics rockbolts nut and production method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4837931A (en) * | 1971-09-20 | 1973-06-04 | ||
| JPS4837932A (en) * | 1971-09-20 | 1973-06-04 | ||
| JPS5365555A (en) * | 1976-11-22 | 1978-06-12 | Torimasa Shiyouda | Fastening member |
-
1983
- 1983-12-19 JP JP58240690A patent/JPS60132115A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4837931A (en) * | 1971-09-20 | 1973-06-04 | ||
| JPS4837932A (en) * | 1971-09-20 | 1973-06-04 | ||
| JPS5365555A (en) * | 1976-11-22 | 1978-06-12 | Torimasa Shiyouda | Fastening member |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60132115A (en) | 1985-07-15 |
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