JPH0471977A - Mold method of resin frame for bicycle - Google Patents
Mold method of resin frame for bicycleInfo
- Publication number
- JPH0471977A JPH0471977A JP18323090A JP18323090A JPH0471977A JP H0471977 A JPH0471977 A JP H0471977A JP 18323090 A JP18323090 A JP 18323090A JP 18323090 A JP18323090 A JP 18323090A JP H0471977 A JPH0471977 A JP H0471977A
- Authority
- JP
- Japan
- Prior art keywords
- frame
- mold
- bag material
- bag member
- frame material
- 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.)
- Pending
Links
- 229920005989 resin Polymers 0.000 title claims abstract description 19
- 239000011347 resin Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims description 9
- 239000000463 material Substances 0.000 claims abstract description 112
- 238000000465 moulding Methods 0.000 claims description 27
- 229920001187 thermosetting polymer Polymers 0.000 claims description 8
- 230000001143 conditioned effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000037303 wrinkles Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Landscapes
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、二輪車用樹脂フレームの成形方法に係り、
詳しくは、中空のフレーム材の中空内に袋材を収容して
成形する二輪車用樹脂フレームの成形方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method of molding a resin frame for a motorcycle,
Specifically, the present invention relates to a method of molding a resin frame for a two-wheeled vehicle, in which a bag material is housed in a hollow frame material.
［従来の技術］
自転車等の二輪車用樹脂フレームを成形する方法として
、例えば米国特許４．８２８，７８１号に示されるよう
に、型内に収容された熱硬化性の樹脂からなる中空のフ
レーム材の中空内に、一定の断面形状をした柔軟性を有
する管材を適当な長さに切断したものを、複数成形前に
フレーム社内に収め、この管材の中に内圧を加えて膨張
させ、フレーム材を型と管材との間で圧縮した状態で加
熱し、硬化して成形するものがある。[Prior Art] As a method of molding a resin frame for a two-wheeled vehicle such as a bicycle, for example, as shown in U.S. Pat. No. 4,828,781, a hollow frame material made of a thermosetting resin is housed in a mold. Inside the hollow, flexible tubes with a certain cross-sectional shape are cut to appropriate lengths and placed inside the frame before being molded, and internal pressure is applied to the tubes to expand them, forming the frame material. Some products are compressed between a mold and a tube and then heated to harden and form.
［発明が解決しようとする課題］
ところが、同様な形状の複数の管材で加圧しているため
、フレーム材の断面積が一定でない場合、管材の膨張率
が不均一となってしまうため、最も膨張率の大ぎい箇所
でも管材が破れないように少し大群目の管材を選定する
必要がある。しかし、これでは管材をフレーム社内に残
したままにする場合は、フレーム全体の重量が増えてし
まう不具合がある。さらに、管材にしわが寄り易くなっ
てしまい、このしわになる部分は加圧状態が悪くなり、
フレームの強度が低下する。[Problems to be Solved by the Invention] However, since the pressure is applied using a plurality of tubes of similar shape, if the cross-sectional area of the frame materials is not constant, the expansion rate of the tubes will be uneven. It is necessary to select a slightly larger group of pipe material to prevent the pipe material from tearing even in areas where the ratio is high. However, this has the disadvantage that if the pipe material is left inside the frame, the weight of the entire frame increases. Furthermore, the pipe material tends to wrinkle, and the pressurization condition deteriorates in the wrinkled area.
Frame strength decreases.
また、このような成形方法によれば、フレーム材の曲が
り部において、管材にしわが寄り易く、前記と同様にフ
レーム材の曲がり部での加圧性が悪く、この部分の強度
性が低下してしまう。In addition, according to such a forming method, the pipe material tends to wrinkle at the bent portion of the frame material, and similarly to the above, the pressurization property at the bent portion of the frame material is poor, and the strength of this portion is reduced. .
さらに、成形前に複数の管材をフレーム材形状に沿って
、フレーム社内に配置する必要があるので手間がかかり
作業性が悪い。Furthermore, it is necessary to arrange a plurality of tube materials inside the frame along the shape of the frame material before molding, which is time-consuming and has poor workability.
この発明はこのような実状に鑑みてなされたもので、フ
レーム全体の重量を軽減し、さらに強度性も確保でき、
しかも作業性もよい二輪車用樹脂フレームの成形方法を
提供することを目的としている。This invention was made in view of these circumstances, and it reduces the weight of the entire frame and also ensures strength.
Moreover, it is an object of the present invention to provide a method for molding a resin frame for a two-wheeled vehicle with good workability.
［！Ｉｌｌ！！を解決するための手段］前記課題を解決
するために、この発明は型内に収容された熱硬化性の樹
脂からなる中空のフレーム材の中空内に、柔軟性を有す
る袋材を収容し、この袋材の中に内圧を加えて袋材を膨
張させ、前記フレーム材を前記型と袋材との間で圧縮し
た状態で加熱して硬化する二輪車用樹脂フレームの成形
方法において、前記袋材を、予めフレームの形状と略凹
−形状に形成された定形材を使用するようにしたことを
特徴としている。[! Ill! ! Means for Solving] In order to solve the above problems, the present invention accommodates a flexible bag material in the hollow of a hollow frame material made of a thermosetting resin housed in a mold, In the method for molding a resin frame for a motorcycle, the bag material is expanded by applying internal pressure to the bag material, and the frame material is compressed between the mold and the bag material and then heated and cured. The present invention is characterized in that a shaped member is used which is formed in advance into a substantially concave shape to match the shape of the frame.
〔作用］
この発明では、袋材をフレームの形状と略凹−形状に形
成された定形材を使用することで、袋材をフレーム社内
に残したままでも、フレーム全体の重量があまり増える
ことがない、また、フレームの形状と略凹−形状に形成
された定形材を使用したので、袋材の膨張率を略均−に
することができ、袋材に空気を供給して膨張させてもし
わが寄りに＜＜、さらにフレームの曲がり部においても
しわを軽減することができ、フレームの強度性を確保す
ることができる。[Function] In this invention, by using a regular shaped material that has a substantially concave shape similar to the shape of the frame, the weight of the entire frame does not increase significantly even if the bag material remains inside the frame. In addition, since we used a shaped material that is approximately concave to the shape of the frame, the expansion rate of the bag material can be made approximately equal to that of the frame, and it is possible to inflate the bag material by supplying air. In addition, wrinkles can be reduced even at curved portions of the frame, and the strength of the frame can be ensured.
さらに、中空のフレーム材の中空内に袋材を収容する際
に、袋材はフレームの形状と略凹−形状に形成された定
形材であるから、この作業性がよい。Further, when the bag material is accommodated in the hollow of the hollow frame member, the bag material is a regular shaped member formed in a substantially concave shape to match the shape of the frame, so that the workability is good.
［実施例］
次に、添付図面と共にこの発明の実施例を詳細に説明す
る。[Example] Next, an example of the present invention will be described in detail with reference to the accompanying drawings.
第１図はこの発明を通用した二輪車の側面図、第２図は
フレームの成形型の側面図、第３図はフレームの成形型
の背面図、第４図はフレームの成形型の底面図、第５図
はフレームの成形型に中空のフレーム材を収納した状態
を示す図、第６図は袋材の側面図、第７図は第６図の■
−■断面図、第８図は第６図のＡ方向から視た矢視図、
第９図はフレーム材の中空内に袋材を収容した状態を示
す図、第１０図は袋材の中に内圧を加える前の状態を示
す断面図、第１１図は袋材を膨張させてフレーム材を成
形型と袋材との間で圧縮した状態を示す断面図である。Fig. 1 is a side view of a two-wheeled vehicle to which the present invention is applied, Fig. 2 is a side view of a frame mold, Fig. 3 is a rear view of the frame mold, and Fig. 4 is a bottom view of the frame mold. Figure 5 is a diagram showing the state in which the hollow frame material is housed in the frame mold, Figure 6 is a side view of the bag material, and Figure 7 is the
- ■ Cross-sectional view, Figure 8 is a view taken from direction A in Figure 6,
Figure 9 is a diagram showing the bag material accommodated in the hollow of the frame material, Figure 10 is a sectional view showing the state before internal pressure is applied to the bag material, and Figure 11 is a diagram showing the bag material inflated. FIG. 3 is a cross-sectional view showing a state in which the frame material is compressed between the mold and the bag material.
図中符号１は二輪車である自転車で、この自転車のフレ
ーム２はステアリング支持部２ａ、後輪支持部２ｂ、シ
ート支持部２Ｃ及びペダル支持部２ｄを有し、これらは
それぞれバイブ部２ｅ〜２１で連結されている。ステア
リング支持部２ａにはフロントフォーク３が回転可能に
支持され、このフロントフォーク３の上方にはハンドル
４が設けられ、下方には前輪５０車軸６が支持されてい
る。後輪支持部２ｂには支持部材７が設けられ、この支
持部材７には後輪８の車軸９が支持されている。シート
支持部２Ｃにはシート１０の支持バイブ１１が設けられ
ている。ペダル支持部２ｄにはペダル１２が回転自在に
設けられ、このペダル１２の回転でペダルスプロケット
１３が一体に回転し、この動力がチェーン１４を介して
後輪スプロケット１５へ伝達され、これで後輪８が駆動
される。Reference numeral 1 in the figure indicates a bicycle, which is a two-wheeled vehicle, and the frame 2 of this bicycle has a steering support portion 2a, a rear wheel support portion 2b, a seat support portion 2C, and a pedal support portion 2d, which are vibrator portions 2e to 21, respectively. connected. A front fork 3 is rotatably supported on the steering support portion 2a, a handle 4 is provided above the front fork 3, and a front wheel 50 and an axle 6 are supported below. A support member 7 is provided on the rear wheel support portion 2b, and an axle 9 of a rear wheel 8 is supported on this support member 7. A support vibrator 11 for the seat 10 is provided in the seat support section 2C. A pedal 12 is rotatably provided on the pedal support portion 2d, and the pedal sprocket 13 rotates together with the rotation of the pedal 12, and this power is transmitted to the rear wheel sprocket 15 via the chain 14. 8 is driven.
フレーム２の前半部はステアリング支持部２８１シート
支持部２Ｃ及びペダル支持部２ｄ、さらにこれらを連結
するバイブ部２ｅ、２ｆ、２ｉとにより略三角形状に形
成され、その内側には前側空間１６が設けられている。The front half of the frame 2 is formed into a substantially triangular shape by the steering support section 281, the seat support section 2C, the pedal support section 2d, and the vibe sections 2e, 2f, and 2i that connect these sections, and a front space 16 is provided inside thereof. It is being
このフレーム２のバイブ部２ｅよりバイブ部２ｆ、２ｉ
の断面積を大きくして、大ぎな荷重がかかる部分の強度
を大きくしている。また、フレーム２の後半部は後輪支
持部２ｂで後輪８の左右両側から後輪８の車軸９を支持
するので、シート支持部２ｃ及びペダル支持部２ｄから
後輪支持部２ｂにかけてパイプ部２ｇ、２ｈで連結され
て二叉になフており、右側三角形状と左側三角形状とが
形成され、やはり夫々内側に後側空間１７．１８が設叶
られている。Vibrator portions 2f and 2i from the vibrator portion 2e of this frame 2.
The cross-sectional area is increased to increase the strength of the parts that are subject to large loads. In addition, since the rear half of the frame 2 supports the axle 9 of the rear wheel 8 from both left and right sides of the rear wheel 8 with a rear wheel support section 2b, a pipe section extends from the seat support section 2c and the pedal support section 2d to the rear wheel support section 2b. 2g and 2h are connected to form a bifurcated opening, forming a triangular shape on the right side and a triangular shape on the left side, with rear spaces 17 and 18 provided inside each.
このフレーム２を成形するために、第２図乃至第５図に
示すような成形型が用いられ、右側型１９、左側型２０
及び後部中央型２１から構成されている。右側型１９、
左側型２０の内側にはフレーム２の形状に沿った凹部１
９ａ、２０ａが形成され、後部中央型２１の外側にはフ
レーム２の形状に沿った凹部２１ａが形成されている。In order to mold this frame 2, molds as shown in FIGS. 2 to 5 are used, including a right mold 19 and a left mold 20.
and a rear center mold 21. Right side type 19,
Inside the left mold 20, there is a recess 1 that follows the shape of the frame 2.
9a and 20a are formed, and a recess 21a that follows the shape of the frame 2 is formed on the outside of the rear center mold 21.
右側型１９、左側型２０及び後部中央型２１の凹部１９
ａ、２０ａ、２１ｇには熱硬化性の樹脂からなる中空の
フレーム材２２が収容される。このフレーム材２２は、
エポキシ樹脂等の熱硬化樹脂が含浸された繊維材料、例
えばカーボン繊維やアラミド繊維、ガラス繊維等のクロ
ス材又は一方向繊維のシート材で形成された薄目のシー
ト材を３〜８枚重ねたものを使用する。この場合は、繊
維方向を変えて重ねたものを厚目の管状に形成するとよ
い０例えば、板厚０．１５ｍｍ又は０２ｍｍの−１向繊
維シート剤を２枚ずつ、フレーム長手方向に対して、０
°、４５＠、−４５９０′″と角度を変え、或いは０°
、４５゜−４５°と角度を変えて重ねて、例えば板圧１
゜２ｍｍのフレーム材２２とする。このフレーム材２２
は第１Ｏ図及び第１１図に示すように、その端部２２ａ
同士が重なるようになっている。Recessed portion 19 of right side mold 19, left side mold 20, and rear center mold 21
A, 20a, and 21g accommodate hollow frame members 22 made of thermosetting resin. This frame material 22 is
A stack of 3 to 8 thin sheets made of fiber material impregnated with thermosetting resin such as epoxy resin, such as cloth material such as carbon fiber, aramid fiber, glass fiber, or unidirectional fiber sheet material. use. In this case, it is best to form a thick tube by stacking the fibers in different directions.For example, two sheets of -1 direction fiber sheet material each having a thickness of 0.15 mm or 0.02 mm should be stacked against the longitudinal direction of the frame. 0
Change the angle to °, 45@, -4590'', or 0°
, stack them at different angles of 45°-45°, for example, with a plate pressure of 1
The frame material 22 is 2 mm. This frame material 22
As shown in FIGS. 1O and 11, its end 22a
They overlap each other.
この熱硬化性の樹脂からなる中空のフレーム材２２の中
空内には、第６図に示すような柔軟性を有する袋材２３
が収容されている。この袋材２３は予めフレームの形状
と略同一形状に形成された定形材を使用しており、柔軟
性があり耐熱性を有する熱可塑樹脂フィルム、例えばポ
リアミドやポリエチレンテレフタレート等で形成されて
いる。Inside the hollow frame material 22 made of thermosetting resin, a flexible bag material 23 as shown in FIG.
is accommodated. This bag material 23 uses a regular shaped material that has been formed in advance into substantially the same shape as the frame, and is made of a flexible and heat-resistant thermoplastic resin film, such as polyamide or polyethylene terephthalate.
この袋材２３番よフレーム２の形状に沿って略同一形状
に形成され、ステアリング支持部成形部２３ａ、後輪支
持部成形部２３ｂ１シ一ト支持部成形部２３ｃ及びペダ
ル支持部成形部２３ｄを有し、これらはそれぞれパイプ
部成形部２３ｅ〜２３ｉで連結されている。This bag material No. 23 is formed in substantially the same shape along the shape of the frame 2, and includes a steering support portion molding portion 23a, a rear wheel support portion molding portion 23b, a seat support portion molding portion 23c, and a pedal support portion molding portion 23d. These are connected by pipe portion molding portions 23e to 23i, respectively.
袋材２３の前半部はステアリング支持部成形部２３ａ１
シート支持部成形部２３ｃ及びペダル支持部成形部２３
ｄ、さらにこれらを連結するバイブ部成形部２３ｅ、２
３ｆ、２３ｉとにより略三角形状に形成され、その内側
には前側空間２５が設けられている。この袋材２３のバ
イブ部成形部２３ｅよりパイプ部成形部２３ｆ、２３ｉ
の断面積を大きくして、右側型１９、左側型２０の凹部
１９ａ、２０ａに対応させている。The front half of the bag material 23 is a steering support molding portion 23a1.
Seat support part molding part 23c and pedal support part molding part 23
d, and a vibe part molding part 23e, 2 which connects these parts.
3f and 23i are formed into a substantially triangular shape, and a front space 25 is provided inside the triangular shape. From the vibe part molding part 23e of this bag material 23, the pipe part molding parts 23f, 23i
The cross-sectional area of the mold is increased to correspond to the recesses 19a and 20a of the right mold 19 and the left mold 20.
また、袋材２３の後半部はシート支持部成形部２３ｃ及
びペダル支持部成形部２３ｄから後輪支持部成形部２３
ｂにかけてパイプ部成形部２３ｇ、２３ｈで連結されて
二叉になっており、右側三角形状と左側三角形状とが形
成され、やはり夫々内側に後側空間２６．２７が設けら
れている。Further, the rear half of the bag material 23 extends from the seat support part molding part 23c and the pedal support part molding part 23d to the rear wheel support part molding part 23.
b, and is connected by pipe molded parts 23g and 23h to form a two-pronged structure, forming a right-hand triangular shape and a left-hand triangular shape, each of which has a rear space 26, 27 inside.
袋材２３はフレーム形状と略同一形状に打抜かれたシー
ト材２８を２枚左右に重ね合わせ、前半部ではそれらの
縁部２８ａを熱或いは高周波等によって溶着し、後半部
には左右のシート材２８に内側からシート材２９をそれ
ぞれ重ね合わせ、それらの縁部２８ａ、２９ａを熱或い
は高周波等によって溶着する０袋材２３のシート支持部
成形部２３ｃにはシート材２８の縁部２８ａを溶着しな
いで空気供給部２３ｊが形成されている。The bag material 23 is made by stacking two sheet materials 28 punched in substantially the same shape as the frame on the left and right, and in the first half, their edges 28a are welded by heat or high frequency, etc., and in the second half, the left and right sheet materials are stacked on top of each other. 28 from the inside, and the edges 28a and 29a are welded by heat, high frequency, etc.The edge 28a of the sheet material 28 is not welded to the sheet support forming portion 23c of the bag material 23. An air supply section 23j is formed.
袋材２３はシート材２８．２９の熱膨張を考慮して、成
形されるフレームの断面の内部空間の周長を基準にして
、例えば０．５乃至３倍の周長を有するものが使用され
、この場合フレームの長手方向は略同−寸法とされる。In consideration of the thermal expansion of the sheet materials 28 and 29, the bag material 23 used has a circumference that is, for example, 0.5 to 3 times the circumference of the internal space of the cross section of the frame to be molded. In this case, the frames have approximately the same dimensions in the longitudinal direction.
このようにして、袋材２３の空気供給部２３ｊがら空気
等を吹込むことにより内圧を加えれば、袋材２３全体が
徐々に膨張していき、外部に空気が漏れないようになっ
ている。In this way, by applying internal pressure by blowing air or the like through the air supply section 23j of the bag material 23, the entire bag material 23 gradually expands, thereby preventing air from leaking to the outside.
このように形成された袋材２３は、内圧を加えることな
く、第９図に示すように右側型１９のフレーム材２２に
収容し、後輪支持部成形部２３ｂにフレーム材３０を設
け、このフレーム材３ｏに支持部材フを当てがう、この
状態で、右側型１９に左側型２０を当てがい、さらに後
部中央型２１を当てがい、第２図乃至４図に示すように
周辺部をポルト３１とナツト３２とで締付固定する。The bag material 23 formed in this way is housed in the frame material 22 of the right mold 19 as shown in FIG. Apply the supporting member to the frame material 3o. In this state, apply the left side mold 20 to the right side mold 19, then apply the rear center mold 21, and as shown in FIGS. Tighten and fix with 31 and nut 32.
そして１袋材２３の前半部でステアリング支持部成形部
２３ａ及びペダル支持部成形部２３ｄと対応する部分に
は、右側型１９及び左側型２０＆：支持ブラケット３３
〜３６がポルト３フで締付固定される。The right mold 19 and the left mold 20 &: support bracket 33 are placed in the front half of the bag material 23 corresponding to the steering support molding portion 23a and the pedal support molding portion 23d.
~36 is tightened and fixed with the port 3 f.
袋材２３の空気供給部２３Ｊは、第９図に示すように、
開放した状態で右側型１９と左側型２０に支持ブラケッ
ト３Ｂをシール部材３９を介して当てがい、ポルト４０
で締付固定する。この支持ブラケット３８には空気圧入
器４１が設けられており、この空気圧入器４１がら空気
が袋材２３内に供給される。The air supply section 23J of the bag material 23 is, as shown in FIG.
In the open state, apply the support bracket 3B to the right mold 19 and the left mold 20 via the sealing member 39, and then attach the port 40.
Tighten and secure. This support bracket 38 is provided with an air injector 41, and air is supplied into the bag material 23 through this air injector 41.
このようにして、袋材２３は右側型１９、左側型２０及
び後部中央型２１内ｒ収容された熱硬化性の樹脂からな
る中空のフレーム材２２の中空内に収納されるが、袋材
２３は中空の形状に応じた形状に形成されているため、
袋材２３を収容する際の作業性がよい。In this way, the bag material 23 is stored in the hollows of the hollow frame material 22 made of thermosetting resin housed inside the right side mold 19, the left side mold 20, and the rear center mold 21. is formed in a shape that corresponds to the hollow shape, so
The workability when storing the bag material 23 is good.
また、袋材２３に空気が供給されると、袋材２３全体が
膨張し、この膨張によって第１１図に示すように、フレ
ーム材２２を右側型１９、左側型２０及び後部中央型２
１と袋材２３との間で圧縮した状態で加熱して硬化する
。Furthermore, when air is supplied to the bag material 23, the entire bag material 23 expands, and as shown in FIG.
1 and the bag material 23 is heated and hardened in a compressed state.
この袋材２３は予めフレームの形状と略同一形状に形成
された定形材を使用しているため、フレーム材２２内に
袋材２３を残したままでも、フレーム２全体の重量があ
まり増えることはない。Since this bag material 23 uses a regular-shaped material that has been formed in advance into approximately the same shape as the frame, even if the bag material 23 is left inside the frame material 22, the overall weight of the frame 2 will not increase too much. do not have.
また、フレーム２の形状と略同一形状に形成されている
ので、フレーム２の断面積が異なっても袋材２３の膨張
率は略均−であり、或いはフレーム２のステアリング支
持部２ａ、後輪支持部２ｂ、シート支持部２ｃ及びペダ
ル支持部２ｄの屈曲部で、しわが寄りにくく、強度性を
確保することができる。Furthermore, since the bag material 23 is formed to have approximately the same shape as the frame 2, the expansion rate of the bag material 23 is approximately uniform even if the cross-sectional area of the frame 2 is different. The bent portions of the support portion 2b, the seat support portion 2c, and the pedal support portion 2d prevent wrinkles and ensure strength.
このようにして成形されたフレーム２には、そのステア
リング支持部２ａ、シート支持部２Ｃ及びペダル支持部
２ｄには、第１図に示すようにそれぞれをアルミ材やカ
ーボン樹脂材等で作られたバイブ材４２〜４４を所定箇
所に挿入して、接着材により接着固定して補強する。In the thus formed frame 2, the steering support part 2a, seat support part 2C, and pedal support part 2d are each made of aluminum material, carbon resin material, etc., as shown in FIG. The vibrator members 42 to 44 are inserted into predetermined locations and fixed and reinforced using an adhesive.
また、この補強は、フレーム材２１自体を少し厚肉に成
形したものを後で切削加工により各部を成形して、二輪
車用樹脂フレーム２の成形を完了することができる。In addition, this reinforcement can be achieved by molding the frame material 21 itself to be slightly thicker and later molding each part by cutting, thereby completing the molding of the resin frame 2 for a two-wheeled vehicle.
［発明の効果］
前記のように、この発明では、型内釘収容された熱硬化
性の樹脂からなる中空のフレーム材の中空内に、柔軟性
を有する袋材を収容し、この袋材を予めフレームの形状
と略同一形状に形成された定形材を使用するようにした
から、袋材をフレーム社内に残したままでも、フレーム
全体の重量があまり増えることがない、また、フレーム
の形状と略同一形状に形成された定形材を使用するよう
にしたので、フレームの断面積が異なっても、袋材の膨
張率を略均−にすることができ、袋材にしわが寄りにく
く、さらにフレームの曲がり部においてもしわを軽減で
き、フレームの強度性を確保することができる。[Effects of the Invention] As described above, in the present invention, a flexible bag material is housed in the hollow of a hollow frame material made of a thermosetting resin in which nails are housed in a mold, and the bag material is Since we use a shaped material that is pre-formed to approximately the same shape as the frame, even if the bag material is left inside the frame, the overall weight of the frame does not increase significantly. Since we use regular shaped materials that are formed into approximately the same shape, even if the cross-sectional area of the frame differs, the expansion rate of the bag material can be made approximately equal, the bag material is less likely to wrinkle, and the frame It is possible to reduce wrinkles even at curved parts and ensure the strength of the frame.
さらに、中空のフレーム材の中空内に、柔軟性を有する
袋材を収容する際に、従来の複数のものを収納するもの
に比して、作業性が著しく向上する。Furthermore, when a flexible bag material is housed in the hollow of the hollow frame member, workability is significantly improved compared to the conventional method of housing a plurality of things.
第１図はこの発明を通用した二輪車の側面図、第２図は
フレームの成形型の側面図、第３図はフレームの成形型
の背面図％３４４図はフレームの成形型の底面図、第５
図はフレームの成形型に中空のフレーム材を収納した状
態を示す図、第６図は袋材の側面図、第７図は第６図の
■−■断面図、第８図は第６図のへ方向から視た矢視図
、第９図はフレーム材の中空内に袋材を収容した状態を
示す図、＠１０図は袋材の中に内圧を加える前の状態を
示す断面図、第１１図は袋材を膨張させてフレーム材を
成形型と袋材との間で圧縮した状態を示す断面図である
。
図面中、符号ｌ二輪車、２はフレーム、１９は右側型、
２０は左側型、２１は後部中央型、２２はフレーム材、
２３は袋材である。
第
図
第１１
図Figure 1 is a side view of a two-wheeled vehicle to which this invention is applied, Figure 2 is a side view of the frame mold, Figure 3 is a rear view of the frame mold, and Figure 344 is a bottom view of the frame mold. 5
The figure shows the state in which the hollow frame material is housed in the frame mold, Figure 6 is a side view of the bag material, Figure 7 is a sectional view taken along the line ■-■ of Figure 6, and Figure 8 is the figure 6. Fig. 9 is a view showing the bag material housed in the hollow of the frame material, and Fig. 10 is a sectional view showing the state before internal pressure is applied to the bag material. FIG. 11 is a sectional view showing a state in which the bag material is expanded and the frame material is compressed between the mold and the bag material. In the drawing, symbol 1 is a two-wheeled vehicle, 2 is a frame, 19 is a right-hand type,
20 is the left side type, 21 is the rear center type, 22 is the frame material,
23 is a bag material. Figure 11
Claims (1)
ム材の中空内に、柔軟性を有する袋材を収容し、この袋
材の中に内圧を加えて袋材を膨張させ、前記フレーム材
を前記型と袋材との間で圧縮した状態で加熱して硬化す
る二輪車用樹脂フレームの成形方法において、前記袋材
を、予めフレームの形状と略同一形状に形成された定形
材を使用するようにしたことを特徴とする二輪車用樹脂
フレームの成形方法。A flexible bag material is housed in the hollow of a hollow frame material made of thermosetting resin housed in a mold, and internal pressure is applied to the bag material to expand the bag material. In a method for molding a resin frame for a motorcycle, in which a material is compressed between the mold and the bag material and then heated and cured, the bag material is a shaped material that is previously formed into substantially the same shape as the frame. A method for molding a resin frame for a motorcycle, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18323090A JPH0471977A (en) | 1990-07-11 | 1990-07-11 | Mold method of resin frame for bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18323090A JPH0471977A (en) | 1990-07-11 | 1990-07-11 | Mold method of resin frame for bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0471977A true JPH0471977A (en) | 1992-03-06 |
Family
ID=16132061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18323090A Pending JPH0471977A (en) | 1990-07-11 | 1990-07-11 | Mold method of resin frame for bicycle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0471977A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07329864A (en) * | 1994-06-08 | 1995-12-19 | Qingdong Bai | Tube connecting structure for vehicle frame and manufacture of vehicle frame |
| JPH0971280A (en) * | 1995-05-19 | 1997-03-18 | Ind Technol Res Inst | Composite regal type bicycle frame and its preparation |
| JP2020537614A (en) * | 2017-10-17 | 2020-12-24 | グレガリオ エッセ．エッレ．エッレ． | Mold manufacturing method and mold |
-
1990
- 1990-07-11 JP JP18323090A patent/JPH0471977A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07329864A (en) * | 1994-06-08 | 1995-12-19 | Qingdong Bai | Tube connecting structure for vehicle frame and manufacture of vehicle frame |
| JPH0971280A (en) * | 1995-05-19 | 1997-03-18 | Ind Technol Res Inst | Composite regal type bicycle frame and its preparation |
| JP2020537614A (en) * | 2017-10-17 | 2020-12-24 | グレガリオ エッセ．エッレ．エッレ． | Mold manufacturing method and mold |
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