JPH086796B2 - Resin gear and its manufacturing method - Google Patents
Resin gear and its manufacturing methodInfo
- Publication number
- JPH086796B2 JPH086796B2 JP2109246A JP10924690A JPH086796B2 JP H086796 B2 JPH086796 B2 JP H086796B2 JP 2109246 A JP2109246 A JP 2109246A JP 10924690 A JP10924690 A JP 10924690A JP H086796 B2 JPH086796 B2 JP H086796B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- base material
- shaped
- web
- impregnated
- 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)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、金属製ブッシュをもつ樹脂製歯車とその製
造法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin gear having a metal bush and a method for manufacturing the resin gear.
従来の技術 上記歯車は、外周面に回り止めを設けた金属製ブッシ
ュと樹脂製のウェブおよび歯部とを一体に成形してなる
ものである。ウェブは、樹脂含浸シート状基材のチップ
片よりなる成形材料を用いて成形したものである成形に
際して、前記成形材料は、金属製ブッシュの外周面に設
けた回り止めの凹凸にも充填され、金属製ブッシュとウ
ェブの結合強度を高めている。2. Description of the Related Art The above gear is formed by integrally molding a metal bush having a rotation stopper on its outer peripheral surface, a resin web, and a tooth portion. The web is molded using a molding material consisting of a chip piece of a resin-impregnated sheet-shaped base material, the molding material is also filled in the irregularities of the detent provided on the outer peripheral surface of the metal bush, Improves the bond strength between the metal bush and the web.
尚、歯部には、例えば、樹脂含浸シート状基材を棒状
に巻き、さらに論にしたものが用いられる。中心に金属
製ブッシュ、その周囲にウェブ構成材料、最外周に歯部
構成材料を配置して金型内で一体に加熱加圧成形を行な
い、成形後に歯を機械加工で設けている。For the tooth portion, for example, a resin-impregnated sheet-shaped base material wound in a rod shape and further discussed is used. A metal bush is arranged at the center, a web constituent material is arranged around it, and a tooth constituent material is arranged at the outermost periphery, and heat and pressure molding is integrally performed in a mold, and teeth are machined after molding.
発明が解決しようとする課題 上記のように、金属製ブッシュと樹脂製のウェブとの
結合強度を高めるために、金属製ブッシュの外周面に回
り止めの凹凸を設け、成形時にウェブ構成材料を前記凹
凸に充填したものとしている。ウェブ構成材料は、材料
コスト等を考えて、チップ片よりなる成形材料を用いて
いるが、歯車の使用中に、歯に大きな力が加わると、歯
が破壊される前に、金属製ブッシュとウェブの結合部分
の破壊が起こることがある。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention As described above, in order to increase the bonding strength between the metal bush and the resin web, the unevenness of the rotation stopper is provided on the outer peripheral surface of the metal bush, and the web constituent material is It is assumed to be filled with irregularities. As the web constituent material, a molding material consisting of chip pieces is used in consideration of the material cost etc., but if a large force is applied to the tooth during the use of the gear, it will be separated from the metal bush before the tooth is broken. Breakage of the bonded portion of the web can occur.
本発明の課題は、金属製ブッシュと樹脂製のウェブの
結合部分の破壊強度が大きい樹脂製歯車を提供すること
である。また、その製造法を提供することである。An object of the present invention is to provide a resin gear having a large breaking strength at a connecting portion between a metal bush and a resin web. Moreover, it is providing the manufacturing method.
課題を解決するための手段 上記課題を解決するために、本発明に係る樹脂製歯車
は、外周面に回り止めを設けた金属製ブッシュと樹脂製
のウェブおよび歯部とを一体成形してなり、樹脂含浸シ
ート状基材のチップ片を成形して、ウェブを構成したも
のにおいて、次の点に特徴がある。Means for Solving the Problems In order to solve the above problems, the resin gear according to the present invention is formed by integrally molding a metal bush provided with a detent on the outer peripheral surface, a resin web, and a tooth portion. In the case where the web is formed by molding the chip pieces of the resin-impregnated sheet-shaped substrate, the following points are characteristic.
すなわち、ウェブの内周面に一体化された帯状の樹脂
含浸基材が、金属製ブッシュを取り巻くように、金属製
ブッシュの外周面に一体となっている点である。帯状の
樹脂含浸基材は、シート状基材を棒状に巻いたものや、
シート状基材を複数枚重ねたものが好ましい。また、帯
状の樹脂含浸基材は、綿布基材とガラス織布基材を複合
して用いるとよい。That is, the strip-shaped resin-impregnated base material integrated with the inner peripheral surface of the web is integrated with the outer peripheral surface of the metal bush so as to surround the metal bush. The belt-shaped resin-impregnated base material is a sheet-shaped base material wound in a rod shape,
It is preferable to stack a plurality of sheet-shaped substrates. The belt-shaped resin-impregnated base material may be used by combining a cotton cloth base material and a glass woven base material.
本発明に係る樹脂製歯車の製造は、以下のように行な
う。The resin gear according to the present invention is manufactured as follows.
樹脂含浸シート状基材のチップ片よりなる成形材料を
円環状に仮成形してウェブ構成体とするが、このとき、
帯状の樹脂含浸基材を輪にしてウェブ構成体の内周面に
一体化する。そして、金属製ブッシュ、前記ウェブ構成
体、歯部構成材料を金型に投入し、加熱加圧成形により
一体化する。A molding material composed of a chip piece of a resin-impregnated sheet-shaped base material is preliminarily molded into an annular shape to form a web structure.
A belt-shaped resin-impregnated base material is formed into a ring and integrated with the inner peripheral surface of the web structure. Then, the metal bush, the web constituent, and the tooth constituent material are put into a mold and integrated by heat and pressure molding.
作用 ウェブを構成する成形材料は、歯車の成形時に金属製
ブッシュの回り止め凹凸に充填され、金属製ブッシュと
ウェブの結合が行なわれる。しかし、ウェブの補強材は
チップ片であるため、ウェブの中で不連続であり、特に
金属製ブッシュと樹脂製のウェブという異質の材料の結
合部分においては、大きな力が加わると破壊されやす
い。The molding material forming the working web is filled in the rotation preventing unevenness of the metal bush at the time of molding the gear, so that the metal bush and the web are coupled. However, since the reinforcing material of the web is a chip piece, it is discontinuous in the web, and particularly at a joint portion of different materials such as a metal bush and a resin web, it is easily broken when a large force is applied.
本発明に係る樹脂製歯車では、帯状の樹脂含浸基材
が、金属製ブッシュの周囲を取り巻いており、成形時の
圧力により、これが金属製ブッシュの回り止めの凹凸に
くい込んでいる。異質の材料の結合部分が連続した基材
で補強されることになるので、破壊強度を大きなものと
することができる。In the resin gear according to the present invention, the belt-shaped resin-impregnated base material surrounds the circumference of the metal bush, and due to the pressure at the time of molding, the unevenness of the metal bush prevents the metal bush from rotating. Since the bonded portion of different materials is reinforced by the continuous base material, the breaking strength can be increased.
また、本発明に係る製造法では、仮成形のウェブ構成
体に、帯状の樹脂含浸基材を輪にして一体化しておき、
本成形に供するもので、作業を行ないやすい。帯状の樹
脂含浸基材は、ガラス織布基材を用いると、金属製ブッ
シュとウェブの間の破壊強度を大きなものとすることが
できるが、ガラうは硬いので、綿布基材と重ねて複合し
て用いると、棒状に巻いたり、輪にするための作業をし
やすくなる。Further, in the production method according to the present invention, the belt-shaped resin-impregnated base material is looped and integrated with the temporarily formed web structure,
It is used for main forming and is easy to work with. If a glass woven cloth base material is used for the belt-shaped resin-impregnated base material, the breaking strength between the metal bush and the web can be increased, but since the glass husk is hard, it can be layered with a cotton cloth base material to form a composite. If used, it will be easier to perform work such as winding into a rod or forming a loop.
実施例 以下、詳細の実施例を説明する。Examples Hereinafter, detailed examples will be described.
第２図に示すように、フェノール樹脂含浸ガラス織布
基材１とフェノール樹脂含浸綿布基材２を重ね、これを
熱盤上で加熱して軟化させた後、前者が内側になるよう
に棒状に巻き込んで、帯状の樹脂含浸基材３とした。そ
して、さらに輪にした。As shown in FIG. 2, a phenolic resin-impregnated glass woven fabric substrate 1 and a phenolic resin-impregnated cotton fabric substrate 2 are overlaid and heated on a hot plate to soften them, and then the rod-shaped so that the former is on the inside. The resin-impregnated base material 3 was rolled up into a strip-shaped resin-impregnated base material 3. And I made a circle.
第３図に示すように、上記フェノール樹脂含浸ガラス
織布基材１とフェノール樹脂含浸綿布基材２をそれぞれ
8mm角、15mm角に裁断してチップ片４とし、両者を混合
した成形材料を用意した。この成形材料と、前記の輪に
した帯状の樹脂含浸基材３を成形金型５に投入し、100
℃で円環状のウェブ構成体６を仮成形した。ウェブ構成
体６の内周面には、帯状の樹脂含浸基材３が一体化され
ている。As shown in FIG. 3, the phenolic resin-impregnated glass woven fabric substrate 1 and the phenolic resin-impregnated cotton fabric substrate 2 are respectively
Chip pieces 4 were cut into 8 mm squares and 15 mm squares, and a molding material in which both were mixed was prepared. This molding material and the above-mentioned belt-shaped resin-impregnated base material 3 in a ring shape are put into a molding die 5 to
A ring-shaped web structure 6 was preliminarily molded at 0 ° C. The belt-shaped resin-impregnated base material 3 is integrated with the inner peripheral surface of the web structure 6.
次に、第１図に示すように、本成形金型７の中央部に
金属製ブッシュ８を配置し、その周囲に上記の円環状の
ウェブ構成体６、最外周に別途用意した歯部構成体９
（フェノール樹脂含浸綿布器材を棒状に巻き込み、さら
に輪にしたもの）を配置して、180℃で加熱加圧成形を
行ない、三者を一体化した。歯は、成形後の歯部構成体
の部分に、機械切削により形成した。Next, as shown in FIG. 1, a metal bush 8 is arranged in the central portion of the main molding die 7, the above-mentioned annular web structure 6 is arranged around the metal bush 8, and a tooth portion structure separately prepared on the outermost periphery. Body 9
(Phenolic resin-impregnated cotton cloth equipment was rolled into a rod and further looped) was placed, and heat and pressure molding was performed at 180 ° C to integrate the three. The teeth were formed by machine cutting in the portion of the tooth structure after molding.
上記の歯車と、従来歯車（帯状の樹脂含浸基材を金属
製ブッシュとウェブの結合部分に介在させないもの）に
ついて、金属製ブッシュとウェブの間の剪断強さ、試験
実装耐久試験を行なった結果を第１表に示す。Results of performing a test mounting durability test on the shear strength between the metal bush and the web for the above gear and the conventional gear (one in which the belt-shaped resin-impregnated base material is not interposed in the joint between the metal bush and the web) Is shown in Table 1.
第１表において、剪断強さは、ウェブの部分を固定
し、金属製ブッシュを回転させたときに破壊する強度を
測定したものである。また、実装耐久試験は、自動車エ
ンジンのカムギァとして使用し、5000rpmフルロードで
連続回転させたときの耐久時間を測定したものである。
従来の歯車では、耐久時間が大きくばらつき、金属製ブ
ッシュとウェブ結合にがたつきを生じるまでの時間が短
い。 In Table 1, the shear strength is the strength at which the web portion is fixed and the metal bush is broken when the bush is rotated. The mounting durability test is used as a cam gear for an automobile engine, and is a durability time measured when continuously rotated at a full load of 5000 rpm.
With conventional gears, the durability time varies widely, and the time until rattling occurs between the metal bush and the web is short.
尚、帯状の樹脂含浸基材として、３枚のガラス織布基
材とその両側に１枚の綿布基材を重ねたものを用いた場
合も、上記実施例と同様の優れた特性が得られた。Incidentally, even when three glass woven fabric substrates and one cotton fabric substrate on both sides thereof are used as the belt-shaped resin-impregnated substrate, excellent characteristics similar to those of the above-described examples can be obtained. It was
発明の効果 上述のように、本発明に係る樹脂製歯車は、金属製ブ
ッシュと樹脂製のウェブの結合部分が連続した基材で補
強され、その破壊強度が大きく、耐久性に優れたもので
ある。Effect of the Invention As described above, the resin gear according to the present invention is reinforced by the base material in which the connecting portion of the metal bush and the resin web is continuous, has a large breaking strength, and is excellent in durability. is there.
また、ウェブと金属製ブッシュの間に介在させる帯状
の樹脂含浸基材は、ウェブ構成体を仮成形するときにそ
の内周面に一体化するので、本成形の作業がしやすくな
る。Further, since the belt-shaped resin-impregnated base material interposed between the web and the metal bush is integrated with the inner peripheral surface of the web structure when the web structure is temporarily formed, the main forming work is facilitated.
第１図は本発明に係る樹脂製歯車を成形する状態を示す
断面説明図、第２図は帯状の樹脂含浸基材を用意する工
程を示す説明図、第３図はウェブ構成体を用意する工程
を示す説明図である。 ３は帯状の樹脂含浸基材、４はチップ片、６はウェブ構
成体、８は金属製ブッシュFIG. 1 is a cross-sectional explanatory view showing a state in which a resin gear according to the present invention is molded, FIG. 2 is an explanatory view showing a step of preparing a belt-shaped resin-impregnated base material, and FIG. 3 is a web structure. It is explanatory drawing which shows a process. 3 is a belt-shaped resin-impregnated base material, 4 is a chip piece, 6 is a web structure, and 8 is a metal bush.
Claims (6)
と樹脂製のウェブおよび歯部とを一体に成形してなり、
ウェブを樹脂含浸シート状基材のチップ片で構成した樹
脂製歯車において、 ウェブの内周面に一体化された帯状の樹脂含浸基材が、
金属製ブッシュを取り巻くように、金属製ブッシュの外
周面に一体となっている樹脂製歯車。1. A metal bush having a detent on its outer peripheral surface, and a resin web and teeth are integrally formed,
In a resin-made gear whose web is composed of chip pieces of a resin-impregnated sheet-shaped base material, a belt-shaped resin-impregnated base material integrated on the inner peripheral surface of the web is
A resin gear that is integrated with the outer surface of the metal bush so that it surrounds the metal bush.
状に巻いたものである請求項１記載の樹脂製歯車。2. The resin gear according to claim 1, wherein the belt-shaped resin-impregnated base material is a sheet-shaped base material wound in a rod shape.
数毎重ねたものである請求項１記載の樹脂製歯車。3. The resin gear according to claim 1, wherein the belt-shaped resin-impregnated base material is a plurality of sheet-shaped base materials stacked one on another.
織布基材を複合したものである請求項２または３に記載
の樹脂製歯車。4. The resin gear according to claim 2, wherein the belt-shaped resin-impregnated base material is a composite of a cotton cloth base material and a glass woven cloth base material.
と樹脂製のウェブおよび歯部とを一体に成形する樹脂製
歯車の製造において、 樹脂含浸シート状基材のチップ片よりなる成形材料を円
環状に仮成形してウェブ構成体となし、このとき、帯状
の樹脂含浸基材を輪にしてウェブ構成体の内周面に一体
化し、 金属製ブッシュ、前記ウェブ構成体、歯部構成材料を金
型に投入して、加熱加圧成形により一体化することを特
徴とする樹脂製歯車の製造法。5. A molding material comprising a chip piece of a resin-impregnated sheet-shaped base material in the manufacture of a resin gear in which a metal bush having a detent on the outer peripheral surface, a resin web and a tooth are integrally molded. To form a web structure by provisionally molding in an annular shape. At this time, a belt-shaped resin-impregnated base material is formed into a ring and integrated with the inner peripheral surface of the web structure, and a metal bush, the web structure, and tooth portions are formed. A method for manufacturing a resin gear, characterized in that the material is put into a mold and integrated by heat and pressure molding.
織布基材を重ねて棒状に巻いたものである請求項５記載
の樹脂製歯車の製造法。6. The method for producing a resin gear according to claim 5, wherein the belt-shaped resin-impregnated base material is a rod-shaped material in which a cotton cloth base material and a glass woven cloth base material are stacked and wound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2109246A JPH086796B2 (en) | 1990-04-25 | 1990-04-25 | Resin gear and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2109246A JPH086796B2 (en) | 1990-04-25 | 1990-04-25 | Resin gear and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH048956A JPH048956A (en) | 1992-01-13 |
| JPH086796B2 true JPH086796B2 (en) | 1996-01-29 |
Family
ID=14505318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2109246A Expired - Fee Related JPH086796B2 (en) | 1990-04-25 | 1990-04-25 | Resin gear and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH086796B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4260079B2 (en) | 2004-08-06 | 2009-04-30 | 株式会社日本自動車部品総合研究所 | Fuel property measuring apparatus for internal combustion engine and internal combustion engine |
| JP5589606B2 (en) * | 2010-06-28 | 2014-09-17 | 日本ガスケット株式会社 | Resin rotating body and manufacturing method thereof |
-
1990
- 1990-04-25 JP JP2109246A patent/JPH086796B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH048956A (en) | 1992-01-13 |
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