JP3334382B2 - Substrate for molding teeth of synthetic resin gears, synthetic resin gears and method of manufacturing synthetic resin gears - Google Patents
Substrate for molding teeth of synthetic resin gears, synthetic resin gears and method of manufacturing synthetic resin gearsInfo
- Publication number
- JP3334382B2 JP3334382B2 JP30530694A JP30530694A JP3334382B2 JP 3334382 B2 JP3334382 B2 JP 3334382B2 JP 30530694 A JP30530694 A JP 30530694A JP 30530694 A JP30530694 A JP 30530694A JP 3334382 B2 JP3334382 B2 JP 3334382B2
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- base material
- cloth
- manufacturing
- mold
- 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 - Fee Related
Links
Landscapes
- Gears, Cams (AREA)
- Reinforced Plastic Materials (AREA)
- Moulding By Coating Moulds (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、樹脂を含浸した基材で
歯部が構成されている合成樹脂製歯車に関する。また、
前記歯部を成形するための基材、ならびに、合成樹脂製
歯車の製造法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin gear having teeth formed of a resin-impregnated base material. Also,
The present invention relates to a base material for forming the tooth portion and a method for manufacturing a synthetic resin gear.
【０００２】[0002]
【従来の技術】合成樹脂製歯車の歯部は、シート状布を
棒状に巻き、さらに、この棒状体の両端を重ねて輪にし
たものを基材としている。例えば、図２に示すように、
綿布等のシート状布にフェノール樹脂等の熱硬化性樹脂
を含浸乾燥して半硬化状態にしたプリプレグ１０を棒状
に巻き、さらに、この棒状体の両端を重ねて輪にしたも
のを基材１１とする。金型内に、前記基材を配置し当該
基材の内側に金属製ブッシュ１２を配置して一体に加熱
加圧成形を行う。金型に配置した基材１１と金属製ブッ
シュ１２との間には、必要に応じて、別途、ウェブ構成
用成形材料１３を充填して一体に成形することもある。
ウェブ構成用成形材料１３は、例えば、プリプレグを裁
断したチップ片をドーナツ状に仮成形したものである。
成形後に、前記基材で構成された成形体部分に機械加工
により歯を形成する（特公平６−４２９９号公報）。図
２（ｄ）は、機械加工により歯を形成した合成樹脂製歯
車の要部を示している。2. Description of the Related Art The tooth portion of a synthetic resin gear is formed by winding a sheet-like cloth into a rod shape, and further forming a base member by laminating both ends of the rod-like body. For example, as shown in FIG.
A sheet-like cloth such as a cotton cloth is impregnated with a thermosetting resin such as a phenol resin and dried to form a semi-cured prepreg 10 in a rod shape. And The base material is placed in a mold, and a metal bush 12 is placed inside the base material, and heat and pressure molding is integrally performed. Between the base material 11 and the metal bush 12 arranged in the mold, if necessary, a molding material 13 for forming a web may be separately filled and molded integrally.
The web forming molding material 13 is obtained by, for example, temporarily forming a chip piece obtained by cutting a prepreg into a donut shape.
After the molding, teeth are formed on the molded body portion constituted by the base material by machining (Japanese Patent Publication No. 6-4299). FIG. 2D shows a main part of a synthetic resin gear having teeth formed by machining.
【０００３】[0003]
【発明が解決しようとする課題】上記合成樹脂製歯車
は、歯部を構成する基材として、シート状布を所定寸法
に裁断して棒状に巻きその両端を重ねて輪にしたものを
用いている。棒状に巻いたシート状布の両端の重ね合せ
部では基材が連続していない。従って、この部分の機械
的強度は、基材が連続している他の部分の強度より弱く
なる。また、シート状布を所定寸法に裁断して棒状に巻
くので、当該所定寸法には足りない端材ができる。本発
明が解決しようとする課題は、樹脂を含浸した基材で歯
部が構成されている合成樹脂製歯車において、歯車の全
周にわたって機械的強度を均一にすることである。ま
た、基材の端材ができないようにし、材料歩留りよく製
造することである。The above-mentioned synthetic resin gear employs, as a base material constituting a tooth portion, a sheet-like cloth cut into a predetermined size, wound into a rod shape, and both ends thereof are overlapped to form a ring. I have. The base material is not continuous at the overlapping portion at both ends of the sheet-like cloth wound in a rod shape. Therefore, the mechanical strength of this portion is lower than that of another portion where the base material is continuous. In addition, since the sheet-like cloth is cut into a predetermined size and wound into a bar shape, scraps that are insufficient for the predetermined size can be obtained. The problem to be solved by the present invention is to make the mechanical strength uniform over the entire circumference of a gear made of a synthetic resin in which the teeth are formed of a resin-impregnated base material. It is another object of the present invention to prevent the generation of offcuts of the base material and to produce the material with a high yield.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するため
の本発明に係る合成樹脂製歯車の歯部成形用基材は、筒
状に織られた布が裏返されながら巻き込まれてなり、ド
ーナツ状に形成されていることを特徴とする。ドーナツ
状に形成された歯部形成用基材は、図１に断面で示した
（ａ）（ｂ）（ｃ）のような態様を含む。すなわち、図
１（ａ）のように、筒状に織られた布１をその一端から
裏返しながら巻き込み、ドーナツ状に形成した歯部成形
用基材２のほかに、図１（ｂ）のように、筒状に織られ
た布１をその一端から半ばまで裏返し、さらにその一端
から裏返しながら巻き込み、ドーナツ状に形成した歯部
成形用基材２’や、図１（ｃ）のように、筒状に織られ
た布１をその両端からそれぞれ裏返しながら巻き込み、
中央で重ねて二重のドーナツ状に形成した歯部成形用基
材２''のような態様を含む。筒状に織られた布は、好ま
しくは、伸縮性を有しているものである。また、本発明
に係る合成樹脂製歯車は、樹脂を含浸した基材で歯部が
構成されているものにおいて、前記基材が上記のドーナ
ツ状に形成されている歯部成形用基材であることを特徴
とする。さらに、本発明に係る合成樹脂製歯車の第１の
製造法は、筒状に織られた布を裏返しながら巻き込みド
ーナツ状に形成したものを歯部を成形する基材とし、こ
れを金型に配置した後に、金型に液状樹脂を注入して基
材に含浸させ成形することを特徴とする。また、第２の
製造法は、筒状に織られた布に熱硬化性樹脂を含浸乾燥
して半硬化状態とし、この布を裏返しながら巻き込みド
ーナツ状に形成したものを歯部を成形する基材とし、こ
れを金型に配置して成形することを特徴とする。上記各
製造法において、筒状に織られた布は、伸縮性を有して
いるものが好ましい。また、筒状に織られた布は、少な
くとも一方の端部の厚さが当該端部に続く他の部分より
厚いものが好ましい。上記第１の製造法において金型に
液状樹脂を注入するに際しては、事前に、金型内を減圧
状態にしておくのが好ましい。According to a first aspect of the present invention, there is provided a synthetic resin gear tooth forming base according to the present invention, which is formed by winding a tubular woven cloth upside down to obtain a donut. It is characterized by being formed in a shape. The tooth part forming base material formed in a donut shape includes embodiments such as (a), (b), and (c) shown in cross section in FIG. That is, as shown in FIG. 1A, a cloth 1 woven in a cylindrical shape is wound upside down from one end thereof, and in addition to the dough-shaped base material 2 for forming a tooth portion, as shown in FIG. Then, the tubular woven cloth 1 is turned upside down from one end to the middle, and further wound up while being turned upside down from the one end, as shown in FIG. 1 (c). Roll up the tubular woven fabric 1 while turning it over from both ends,
This includes an embodiment such as a tooth part forming base material 2 ″ formed in a double donut shape by being overlapped at the center. The tubular woven cloth preferably has elasticity. Further, the synthetic resin gear according to the present invention is a gear having a tooth portion formed of a resin-impregnated base material, wherein the base material is a tooth part forming base material formed in the above-described donut shape. It is characterized by the following. Further, the first method of manufacturing a synthetic resin gear according to the present invention is to turn a cylindrically woven cloth into a donut shape while turning the cloth upside down as a base material for molding a tooth portion, and use this as a mold. After the disposition, a liquid resin is injected into a mold to impregnate and mold the base material. In the second manufacturing method, a tubular woven cloth is impregnated with a thermosetting resin and dried to be in a semi-cured state, and the cloth is turned upside down and wound into a donut shape to form a tooth portion. It is characterized in that it is placed in a mold and molded. In each of the above production methods, the cloth woven in a tubular shape is preferably one having elasticity. In addition, it is preferable that the cloth woven into a tubular shape has a thickness of at least one end portion larger than that of another portion following the end portion. When injecting the liquid resin into the mold in the first manufacturing method, it is preferable that the inside of the mold is reduced in pressure beforehand.
【０００５】[0005]
【作用】本発明に係る合成樹脂製歯車の歯部成形用基材
は、筒状に織られた布が裏返されながら巻き込まれてな
るので、形成されたドーナツ状の基材は周方向に連続し
ており継なぎ目がない。従って、樹脂を含浸したこの基
材で歯車の歯部が構成された合成樹脂製歯車は、歯車の
全周にわたって機械的強度を均一にすることができる。
筒状に織られた布が伸縮性を有するものであると、その
伸縮性により歯車の歯の弾力性が増すので、歯車の回転
中に相手歯車から受けた衝撃を吸収して耐衝撃性の向上
した歯車とすることができる。本発明に係る合成樹脂製
歯車の製造法によれば、筒状に織られた布を裏返しなが
ら巻き込みドーナツ状に形成したものを歯部を成形する
基材とするので、シート状布を所定寸法に裁断するとき
のように、寸法の足りない端材ができない。所定の長さ
で筒状に織られた布を用意するか、筒状に織られた長尺
の布を所定長さに裁断して用いればよいので、材料歩留
りは向上する。筒状に織られた布が伸縮性を有するもの
であると、その伸縮性により、筒状に織られた布を裏返
しながら巻き込む作業を容易に行なうことができる（ち
ょうど、靴下を脱ぐときに、上端から裏返して巻き込む
作業を想像すると理解が容易である）。筒状に織られた
布の端部の厚さを端部に続く他の部分より厚くしておく
と、筒状に織られた布をその端部から裏返して巻き込む
ときに、当該厚い部分を巻き始めの芯にすることができ
るので、巻き込む作業を容易に行なうことができる。ド
ーナツ状に形成した基材を金型に配置し、金型に液状樹
脂を注入して基材に含浸させるとき、金型内を減圧状態
にしておくと液状樹脂の基材への浸透が円滑に行なわれ
る。The base material for forming the teeth of the synthetic resin gear according to the present invention is formed by winding a tubular woven fabric upside down, so that the formed donut-shaped base material is continuous in the circumferential direction. It has no seams. Therefore, the synthetic resin gear in which the tooth portion of the gear is formed of the resin-impregnated base material can have uniform mechanical strength over the entire circumference of the gear.
If the cloth woven in a tubular shape has elasticity, the elasticity of the gear teeth increases due to the elasticity. An improved gear can be provided. According to the method of manufacturing a synthetic resin gear according to the present invention, the sheet-shaped cloth is formed to a predetermined size because the cloth formed into a donut shape while turning the cylindrical woven cloth upside down is used as the base material for forming the teeth. As in the case of cutting into pieces, short pieces with insufficient dimensions cannot be formed. Since a cylindrically woven cloth having a predetermined length may be prepared, or a long cloth woven into a cylindrical shape may be cut into a predetermined length and used, the material yield is improved. When the cloth woven in a tubular shape has elasticity, the work of winding up the tubular woven cloth while turning it over can be easily performed by the elasticity (just when taking off the socks, It is easy to understand if you imagine the work of turning over from the top and winding around.) If the thickness of the end portion of the tubular woven cloth is made thicker than other portions following the end portion, when the tubular woven cloth is turned over from the end and rolled up, the thick portion is removed. Since the core can be used as the core at the beginning of winding, the winding operation can be easily performed. When the doughnut-shaped base material is placed in a mold, and the liquid resin is injected into the mold and impregnated into the base material, if the inside of the mold is kept under reduced pressure, the liquid resin will smoothly penetrate the base material. It is performed.
【０００６】[0006]
【実施例】本発明を実施するに当たり、基材に含浸させ
る樹脂は、フェノール樹脂、エポキシ樹脂、ポリエステ
ル、ポリイミド、ＣＰレジン（架橋ポリエステルアミ
ド、架橋ポリアミノアミド）等の熱硬化性樹脂である。
基材を金型に配置してから金型に液状樹脂を注入し基材
に含浸させる場合には、ＣＰレジン、エポキシ樹脂、ポ
リイミド等の樹脂が適当である。また、基材に予め熱硬
化性樹脂を含浸乾燥して半硬化状態とするときは、フェ
ノール樹脂、エポキシ樹脂、ポリエステル、ポリイミド
等の樹脂が適当である。筒状に織られた布の織り方は、
ニット織りや平織りであり、前者の織り方では布に伸縮
性をもたせることができる。また、布を構成する糸は、
アラミド繊維やポリアミド繊維、綿糸、カバリング糸等
である。DESCRIPTION OF THE PREFERRED EMBODIMENTS In carrying out the present invention, the resin to be impregnated into a substrate is a thermosetting resin such as a phenol resin, an epoxy resin, a polyester, a polyimide, and a CP resin (crosslinked polyesteramide, crosslinked polyaminoamide).
When the liquid resin is injected into the mold after the base material is placed in the mold to impregnate the base material, a resin such as a CP resin, an epoxy resin, or a polyimide is suitable. When the base material is previously impregnated with a thermosetting resin and dried to be in a semi-cured state, a resin such as a phenol resin, an epoxy resin, a polyester, or a polyimide is suitable. How to weave the woven cloth
It is knit weave or plain weave, and the former weave can give the fabric elasticity. Also, the yarns that make up the fabric are
Aramid fibers, polyamide fibers, cotton yarns, covering yarns and the like.
【０００７】実施例１ メタ型アラミド繊維とパラメタ型アラミド繊維の混紡糸
を筒状にニット織りした布を、図１（ａ）に示したよう
に、その一端から裏返しながら巻き込み、ドーナツ状に
形成した歯部成形用基材２を用意した。この歯部成形用
基材２を金型に配置し、歯部成形用基材２の内側には金
属製ブッシュを配置して、２００Kg／cm2の圧力で型締
し、ＣＰレジンを金型内に注入して１６０℃で、歯部成
形用基材と金属性ブッシュを一体に成形した。成形後、
歯部成形用基材２で構成された部分に機械加工により歯
を形成した。本実施例では、ニット織りした布を用いた
ので、次に述べる実施例２（アラミド繊維からなる糸を
筒状に平織りした布を使用）より、裏返しながら巻き込
む作業を容易に行なうことができた。ニット織りした布
は、裏返しながら巻き込む一端を二重織りにしたので厚
さがそれに続く部分より厚くなり、巻き始めの芯に利用
して、巻き込む作業を一層容易にすることができた。ま
た、金型内にＣＰレジンを注入するとき金型内の圧力を
６０mmHg以下にしたので、金型内を減圧状態にしない場
合より、成形品中にボイドが残留しにくい成形を行なう
ことができた。Example 1 As shown in FIG. 1A, a cloth obtained by knitting a blended yarn of meta-type aramid fibers and para-type aramid fibers in a cylindrical shape is turned upside down from one end thereof and formed into a donut shape. The prepared tooth part forming base material 2 was prepared. This tooth part forming base material 2 is placed in a mold, a metal bush is placed inside the tooth part forming base material 2 and the mold is clamped at a pressure of 200 kg / cm 2 , and the CP resin is placed in a mold. Then, at 160 ° C., a tooth part forming base and a metal bush were integrally formed. After molding,
The teeth were formed by machining on the portion constituted by the tooth portion forming base material 2. In this embodiment, since a knit-woven cloth was used, the work of winding up while turning over could be performed more easily than in Example 2 (a cloth in which a yarn made of aramid fiber was plain-woven in a tubular shape) described below. . The knit-woven cloth was turned upside down and double-wound at one end to be wound, so that the thickness was thicker than the subsequent part, and the knitting work could be further facilitated by using it as a core at the beginning of winding. Also, since the pressure in the mold is set to 60 mmHg or less when the CP resin is injected into the mold, it is possible to perform molding in which voids are less likely to remain in the molded product than when the inside of the mold is not depressurized. Was.
【０００８】実施例２ アラミド繊維からなる糸を筒状にニット織りした布に代
えて、アラミド繊維からなる糸を筒状に平織りした布
（厚さは全長にわたって均一）を用いた以外は、実施例
と同様にして合成樹脂製歯車を構成した。Example 2 The procedure of Example 2 was repeated except that, instead of using a cloth made of knitted aramid fibers in a tubular shape, a cloth made of plain aramid fibers was used (the thickness was uniform over the entire length). A synthetic resin gear was formed in the same manner as in the example.
【０００９】従来例 アラミド繊維からなる糸を平織りしたシート状布を所定
寸法に裁断し、図２に示すように棒状に巻き（但し、樹
脂は含浸していない）、さらに、この棒状体１１の両端
を重ねて輪にしたものを基材３とした。基材３を金型に
配置し、実施例１と同様に成形して合成樹脂製歯車を構
成した。Conventional Example A sheet-like cloth obtained by plain weaving a yarn made of aramid fiber is cut into a predetermined size and wound into a rod shape as shown in FIG. 2 (however, resin is not impregnated). The base material 3 was formed by overlapping both ends to form a ring. The substrate 3 was placed in a mold and molded in the same manner as in Example 1 to form a synthetic resin gear.
【００１０】上記実施例と従来例の合成樹脂製歯車の特
性を表１に示す。表１から明らかなように、従来例の歯
車は、棒状体の両端を重ねた部分（継ぎ目部分）の破壊
強度が他の部分の強度より小さい。実施例の歯車は、前
記継ぎ目部分がないので全周にわたって強度が均一であ
る。また、実施例１と実施例２との比較から、基材が伸
縮性を有する実施例１の場合には耐衝撃強度も大きいこ
とが理解できる。Table 1 shows the characteristics of the synthetic resin gears of the above embodiment and the conventional example. As is apparent from Table 1, in the conventional gear, the breaking strength at the portion where the both ends of the rod-shaped body overlap (seam portion) is smaller than the strength at the other portions. In the gear of the embodiment, since there is no seam portion, the strength is uniform over the entire circumference. In addition, from a comparison between Example 1 and Example 2, it can be understood that in the case of Example 1 in which the base material has elasticity, the impact strength is large.
【００１１】[0011]
【表１】 [Table 1]
【００１２】上記実施例では、基材を金型に配置してか
ら金型に液状樹脂を注入し、基材に含浸させた。そのほ
かに、筒状に織られた布にフェノール樹等の熱硬化性樹
脂を含浸乾燥して半硬化状態とし、この布を裏返しなが
ら巻き込みドーナツ状に形成したものを歯部成形用基材
とし、これを金型に配置して加熱加圧成形し構成した合
成樹脂製歯車も、上記と同様の効果を有する。この場
合、筒状に織られた布を加熱された円柱（円筒）にかぶ
せて加温し、半硬化状態の熱硬化性樹脂を軟化させた状
態で巻き込みを行なうと作業をしやすい。In the above embodiment, the base material was placed in the mold, and then the liquid resin was injected into the mold to impregnate the base material. In addition, a cloth woven in a tubular shape is impregnated with a thermosetting resin such as phenolic resin and dried to a semi-cured state. Synthetic resin gears, which are formed by heating and press-forming them by arranging them in a mold, have the same effect as described above. In this case, the work is easy if the cloth woven in a cylindrical shape is heated over a heated column (cylinder) and heated in a state where the thermosetting resin in a semi-cured state is softened.
【００１３】[0013]
【発明の効果】上述のように、本発明に係る合成樹脂製
歯車は、歯部を構成するドーナツ状の歯部成形用基材に
継ぎ目がないので、歯車の全周にわたって均一な強度を
保持することができる。ドーナツ状の歯部成形用基材を
構成する筒状に織られた布が伸縮性を有するときは、歯
車の駆動中に歯に加わる衝撃をその伸縮性を利用して吸
収し、耐衝撃性の向上した合成樹脂製歯車とすることが
できる。本発明に係る合成樹脂製歯車の製造法によれ
ば、ドーナツ状の歯部成形用基材を作るときに基材の端
材ができにくいので材料歩留りが向上する。ドーナツ状
の歯部成形用基材を構成する筒状に織られた布が伸縮性
を有するときは、これを裏返しながら巻き込みドーナツ
状の歯部成形用基材を作る作業が容易になる。筒状に織
られた布を一端から裏返して巻き込むとき、その一端の
厚さをそれに続く部分より厚くしておくときは、当該厚
い部分を巻き始めの芯に利用して、巻き込む作業を一層
容易にすることができる。As described above, the synthetic resin gear according to the present invention maintains a uniform strength over the entire circumference of the gear because the doughnut-shaped tooth forming base material constituting the teeth has no seams. can do. When the cylindrical woven fabric that constitutes the doughnut-shaped tooth forming base has elasticity, it absorbs the impact applied to the teeth while driving the gears by using the elasticity, and the impact resistance And a synthetic resin gear having an improved gear ratio. ADVANTAGE OF THE INVENTION According to the manufacturing method of the synthetic resin gear which concerns on this invention, when producing a doughnut-shaped tooth part shaping | molding base material, the end material of a base material is hard to be formed and material yield improves. When the tubular woven cloth constituting the donut-shaped tooth-forming base material has elasticity, the operation of making the donut-shaped tooth-forming base material while rolling over the cloth is facilitated. When winding a tubular woven fabric upside down from one end and making the thickness of one end thicker than the subsequent portion, the thicker portion is used as a core at the beginning of winding, making the winding operation easier. Can be
【図１】本発明におけるドーナツ状の基材の態様を示す
断面説明図である。FIG. 1 is an explanatory sectional view showing an embodiment of a doughnut-shaped base material in the present invention.
【図２】従来の歯部構成用基材を作る様子を示す説明図
である。FIG. 2 is an explanatory view showing how to make a conventional base material for forming a tooth portion.
１は筒状に織られた布 ２，２’，２''は歯部成形用基材 1 is a cloth woven in a cylindrical shape 2, 2 ', 2' 'is a base material for forming a tooth portion
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ // Ｂ２９Ｋ 105:08 Ｂ２９Ｃ 67/14 Ｇ Ｂ２９Ｌ 15:00 Ｘ (72)発明者 小林 直巳 東京都新宿区西新宿２丁目１番１号 新 神戸電機株式会社内 審査官 大島 祥吾 (56)参考文献 特開 昭59−209832（ＪＰ，Ａ) 特開 昭58−168527（ＪＰ，Ａ) 特開 平６−91770（ＪＰ，Ａ) 特開 平２−241729（ＪＰ，Ａ) 特開 平５−240325（ＪＰ，Ａ) 特公 平７−102577（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.7，ＤＢ名) B29D 15/00 B29B 11/16 B29C 70/06 B29C 70/10 F16H 55/06 ────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. 7 Identification symbol FI // B29K 105: 08 B29C 67/14 G B29L 15:00 X (72) Inventor Naomi Kobayashi 2-1-1 Nishishinjuku, Shinjuku-ku, Tokyo No. 1 Shin Kobe Electric Co., Ltd. Examiner Shogo Oshima (56) References JP-A-59-209832 (JP, A) JP-A-58-168527 (JP, A) JP-A-6-91770 (JP, A) JP-A-2-241729 (JP, A) JP-A-5-240325 (JP, A) JP-B-7-102577 (JP, B2) (58) Fields investigated (Int. Cl. 7 , DB name) B29D 15/00 B29B 11/16 B29C 70/06 B29C 70/10 F16H 55/06
Claims (8)
まれてなり、ドーナツ状に形成されていることを特徴と
する合成樹脂製歯車の歯部成形用基材。1. A synthetic resin gear tooth forming base, wherein a cloth woven in a cylindrical shape is wound upside down and formed into a donut shape.
ことを特徴とする請求項１記載の合成樹脂製歯車の歯部
成形用基材。2. The base material for forming teeth of a synthetic resin gear according to claim 1, wherein the cloth woven in a tubular shape has elasticity.
る合成樹脂製歯車において、前記基材が請求項１または
２に記載の歯部成形用基材であることを特徴とする合成
樹脂製歯車。3. A synthetic resin gear having teeth formed of a resin-impregnated base material, wherein the base material is the base material for forming a tooth portion according to claim 1 or 2. Synthetic resin gears.
ドーナツ状に形成したものを歯部を成形する基材とし、
これを金型に配置した後に金型に液状樹脂を注入して基
材に含浸させ成形することを特徴とする合成樹脂製歯車
の製造法。4. A base material for forming a tooth portion, which is formed by winding a tubular woven fabric upside down and winding it into a donut shape,
A method for manufacturing a synthetic resin gear, characterized in that a liquid resin is poured into a mold, the base material is impregnated with the liquid resin, and then molded.
燥して半硬化状態とし、この布を裏返しながら巻き込み
ドーナツ状に形成したものを歯部を成形する基材とし、
これを金型に配置して成形することを特徴とする合成樹
脂製歯車の製造法。5. A tubular woven cloth impregnated with a thermosetting resin and dried to be in a semi-cured state, and the cloth is turned upside down to form a donut shape, which is used as a base material for forming teeth.
A method of manufacturing a synthetic resin gear, characterized by disposing this in a mold and molding.
ことを特徴とする請求項４または５に記載の合成樹脂製
歯車の製造法。6. The method for manufacturing a synthetic resin gear according to claim 4, wherein the cloth woven in a tubular shape has elasticity.
部の厚さが当該端部に続く他の部分より厚いことを特徴
とする請求項４〜６のいずれかに記載の合成樹脂製歯車
の製造法。7. The synthetic material according to claim 4, wherein the cloth woven in a cylindrical shape has a thickness of at least one end portion is larger than that of another portion following the end portion. Manufacturing method for resin gears.
態にしておくことを特徴とする請求項４に記載の合成樹
脂製歯車の製造法。8. The method for manufacturing a synthetic resin gear according to claim 4, wherein the inside of the mold is depressurized before injecting the liquid resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30530694A JP3334382B2 (en) | 1994-12-09 | 1994-12-09 | Substrate for molding teeth of synthetic resin gears, synthetic resin gears and method of manufacturing synthetic resin gears |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30530694A JP3334382B2 (en) | 1994-12-09 | 1994-12-09 | Substrate for molding teeth of synthetic resin gears, synthetic resin gears and method of manufacturing synthetic resin gears |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08156124A JPH08156124A (en) | 1996-06-18 |
| JP3334382B2 true JP3334382B2 (en) | 2002-10-15 |
Family
ID=17943519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30530694A Expired - Fee Related JP3334382B2 (en) | 1994-12-09 | 1994-12-09 | Substrate for molding teeth of synthetic resin gears, synthetic resin gears and method of manufacturing synthetic resin gears |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3334382B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001295913A (en) | 2000-04-12 | 2001-10-26 | Shin Kobe Electric Mach Co Ltd | Resin gear and manufacturing method thereof |
| JP3496119B2 (en) | 2000-07-27 | 2004-02-09 | 光洋精工株式会社 | Electric steering device |
| JP2002113788A (en) * | 2000-10-11 | 2002-04-16 | Teijin Ltd | Fiber reinforced resin composite |
| JP2003014086A (en) * | 2001-06-27 | 2003-01-15 | Teijin Ltd | Fiber reinforced resin gear and manufacturing method thereof |
| JP2005121237A (en) * | 2005-02-03 | 2005-05-12 | Shin Kobe Electric Mach Co Ltd | Resin gear |
| JP4919154B2 (en) | 2006-12-19 | 2012-04-18 | スズキ株式会社 | Resin gear |
| JP4844495B2 (en) * | 2007-08-03 | 2011-12-28 | 株式会社豊田自動織機 | Fiber reinforced plastic gear |
| JP2011033200A (en) * | 2010-11-16 | 2011-02-17 | Shin Kobe Electric Mach Co Ltd | Method of manufacturing resin gear |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7102577B2 (en) | 2012-01-24 | 2022-07-19 | 三菱鉛筆株式会社 | Eraser |
-
1994
- 1994-12-09 JP JP30530694A patent/JP3334382B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7102577B2 (en) | 2012-01-24 | 2022-07-19 | 三菱鉛筆株式会社 | Eraser |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08156124A (en) | 1996-06-18 |
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