JP2010180918A - Resin gear - Google Patents
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- JP2010180918A JP2010180918A JP2009023263A JP2009023263A JP2010180918A JP 2010180918 A JP2010180918 A JP 2010180918A JP 2009023263 A JP2009023263 A JP 2009023263A JP 2009023263 A JP2009023263 A JP 2009023263A JP 2010180918 A JP2010180918 A JP 2010180918A
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- tooth tip
- resin gear
- gear
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- 239000011347 resin Substances 0.000 title claims abstract description 49
- 229920005989 resin Polymers 0.000 title claims abstract description 49
- 238000010521 absorption reaction Methods 0.000 abstract description 11
- 230000002159 abnormal effect Effects 0.000 abstract description 6
- 230000005856 abnormality Effects 0.000 abstract description 6
- 230000008961 swelling Effects 0.000 abstract description 6
- 229920006231 aramid fiber Polymers 0.000 description 16
- 238000000034 method Methods 0.000 description 8
- 239000012783 reinforcing fiber Substances 0.000 description 7
- 238000000465 moulding Methods 0.000 description 5
- 239000004760 aramid Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- VMKOFRJSULQZRM-UHFFFAOYSA-N 1-bromooctane Chemical compound CCCCCCCCBr VMKOFRJSULQZRM-UHFFFAOYSA-N 0.000 description 1
- HMOZDINWBHMBSQ-UHFFFAOYSA-N 2-[3-(4,5-dihydro-1,3-oxazol-2-yl)phenyl]-4,5-dihydro-1,3-oxazole Chemical compound O1CCN=C1C1=CC=CC(C=2OCCN=2)=C1 HMOZDINWBHMBSQ-UHFFFAOYSA-N 0.000 description 1
- YBRVSVVVWCFQMG-UHFFFAOYSA-N 4,4'-diaminodiphenylmethane Chemical compound C1=CC(N)=CC=C1CC1=CC=C(N)C=C1 YBRVSVVVWCFQMG-UHFFFAOYSA-N 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Gears, Cams (AREA)
Abstract
Description
本発明は、歯部全体が樹脂で構成された樹脂製歯車に関する。 The present invention relates to a resin gear whose entire tooth portion is made of resin.
樹脂製歯車は、歯の噛み合い時の騒音発生を抑えるために金属製歯車と噛み合う相手歯車として用いられ、高強度と寸法安定性が要求される。 Resin gears are used as counterpart gears that mesh with metal gears in order to suppress the generation of noise when teeth mesh, and require high strength and dimensional stability.
例えば、アラミド繊維は極めて高強度であり、アラミド繊維をマトリックス樹脂中に充填したアラミド繊維強化樹脂製歯車や、アラミド繊維を主成分として含むアラミド繊維基材にマトリックス樹脂を保持したアラミド繊維基材強化樹脂製歯車が注目されている。
しかし、アラミド繊維は吸湿しやすく、その飽和吸湿率は１質量％を越える。従って、アラミド繊維強化ないしアラミド繊維基材強化樹脂製歯車は吸湿しやすくなっている。前記繊維強化樹脂製歯車は、吸湿による膨潤で寸法変化を起こす。
For example, aramid fibers are extremely high in strength. Aramid fiber reinforced resin gears filled with aramid fibers in a matrix resin, or aramid fiber substrates reinforced with an aramid fiber substrate that contains aramid fibers as the main component. Resin gears are attracting attention.
However, aramid fibers are easy to absorb moisture, and their saturated moisture absorption exceeds 1% by mass. Therefore, the aramid fiber reinforced or aramid fiber base reinforced resin gear easily absorbs moisture. The fiber reinforced resin gear causes a dimensional change due to swelling due to moisture absorption.
上記問題点は、アラミド繊維とマトリックス樹脂との接着性向上によって解決できると考えられ、接着性向上の手段として、例えば、特許文献１に記載されるような技術が提案されている。この技術は、アラミド繊維表面を、フェノール性水酸基を有するポリアミドで被覆し、アラミド繊維表面にポリアミド層を形成するものである。
しかしながら、特許文献１記載の技術を以ってしても、樹脂製歯車の吸湿性を小さくすることは不充分であった。
It is considered that the above problem can be solved by improving the adhesion between the aramid fiber and the matrix resin, and as a means for improving the adhesion, for example, a technique described in Patent Document 1 has been proposed. In this technique, the surface of an aramid fiber is coated with a polyamide having a phenolic hydroxyl group, and a polyamide layer is formed on the surface of the aramid fiber.
However, even with the technique described in Patent Document 1, it has been insufficient to reduce the hygroscopicity of the resin gear.
上記のように、歯部全体が樹脂で構成された樹脂製歯車は、吸湿による膨潤で寸法変化を起こし、歯形形状が変化する。これにより、歯車の回転速度がばらついたり、歯車がスムーズに回転しなくなったりするなど噛み合い時に異常が発生するという問題がある。また、バックラッシ量が減少して、噛み合い時に異音が発生するという問題がある。 As described above, a resin gear whose entire tooth portion is made of resin undergoes a dimensional change due to swelling due to moisture absorption, and the tooth profile changes. As a result, there is a problem that an abnormality occurs at the time of meshing such that the rotation speed of the gear varies or the gear does not rotate smoothly. Further, there is a problem that the amount of backlash is reduced and abnormal noise is generated when meshing.
本発明が解決しようとする課題は、樹脂製歯車が吸湿による膨潤で寸法変化を起こす場合においても、前記噛み合い時の異常や異音が発生しない樹脂製歯車を提供することである。 The problem to be solved by the present invention is to provide a resin gear that does not cause abnormalities or abnormal noises when meshed even when the resin gear undergoes dimensional changes due to swelling due to moisture absorption.
本発明者らは、樹脂製歯車の吸湿による寸法変化について鋭意検討を重ねた結果、歯形形状の変化は歯先部分が特に大きくなることを見出し本発明に到達した。 As a result of intensive studies on the dimensional change due to moisture absorption of the resin gear, the present inventors have found that the tooth shape part has a particularly large tooth tip portion, and have reached the present invention.
すなわち、本発明に係る樹脂製歯車は、歯部全体が樹脂で構成された樹脂製歯車であって、歯先部分の歯面を、基準歯形形状の歯面より内側に位置させたことを特徴とする（請求項１）。
好ましくは、歯先部分を、歯先から全歯丈の２０〜５０％に相当する部分とし、歯先部分において、歯先は全歯丈の０．２〜１．２％に相当する距離だけ基準歯形形状の歯先より内側に位置させる（請求項２）。
That is, the resin gear according to the present invention is a resin gear in which the entire tooth portion is made of resin, and the tooth surface of the tooth tip portion is positioned inside the tooth surface of the reference tooth profile shape. (Claim 1).
Preferably, the tooth tip portion is a portion corresponding to 20 to 50% of the total tooth height from the tooth tip, and in the tooth tip portion, the tooth tip is a distance corresponding to 0.2 to 1.2% of the total tooth height. It is located inside the tooth tip of the reference tooth profile shape (Claim 2).
本発明において、基準歯形形状とは、歯車の回転軸が垂直に立つ面から見た歯車の歯形がインボリュート曲線に沿う形状をいう。また、歯面とは、歯と歯が噛み合う面をいう。 In the present invention, the reference tooth profile shape refers to a shape in which the gear tooth profile along the involute curve is viewed from the plane in which the rotation axis of the gear stands vertically. Further, the tooth surface refers to a surface where the teeth mesh with each other.
従来の樹脂製歯車は、基準歯形形状に形成しているため、吸湿により、特に歯先部分の歯形形状が大きく変化する。これにより、歯車の回転速度がばらついたり、歯車がスムーズに回転しなくなったりするなど噛み合い時に異常が発生したり、バックラッシ量が減少して、噛み合い時に異音が発生したりするという問題があった。 Since the conventional resin gear is formed in a reference tooth profile shape, the tooth profile shape of the tooth tip portion changes particularly greatly due to moisture absorption. As a result, there are problems that the rotation speed of the gears varies, the gears do not rotate smoothly, an abnormality occurs at the time of meshing, the backlash amount is reduced, and an abnormal noise is generated at the time of meshing. .
本発明に係る樹脂製歯車は、歯先部分の歯面を、基準歯形形状の歯面より内側に位置させたため、吸湿により歯形形状が変化した場合においても、基準歯形形状の歯面より外側への膨潤を小さく抑えることができる。このため、前記噛み合い時の異常や異音が発生する心配がない。 In the resin gear according to the present invention, the tooth surface of the tooth tip portion is positioned on the inner side of the tooth surface of the reference tooth profile shape, so even when the tooth shape changes due to moisture absorption, the tooth surface of the reference tooth profile shape moves outward. Can be suppressed to a small extent. For this reason, there is no fear that abnormalities or abnormal noises occur during the engagement.
このとき、歯先部分を、歯先から全歯丈の２０〜５０％に相当する部分とし、歯先部分において、歯先は全歯丈の０．２〜１．２％に相当する距離だけ基準歯形形状の歯先より内側に位置させることが好ましい。この範囲であれば、初期（吸湿前）の状態においても、歯車の回転にガタが生じたり、歯打ち音が大きくなったりする心配はない。 At this time, the tooth tip portion is a portion corresponding to 20 to 50% of the total tooth height from the tooth tip, and in the tooth tip portion, the tooth tip is a distance corresponding to 0.2 to 1.2% of the total tooth height. It is preferable to position it inside the tooth tip of the reference tooth profile shape. Within this range, there is no concern that the gears will rattle or the rattling noise will increase even in the initial state (before moisture absorption).
本発明の実施の形態を、図面を参照しながら説明する。
図１は、本発明の実施の形態に係る樹脂製歯車の歯部の拡大図である。本発明に係る樹脂製歯車は、歯部１全体が樹脂で構成されている。そして、歯先部分３の歯面を、基準歯形形状５の歯面より内側に位置させるように形成する。好ましくは、歯先部分３を、歯先２から全歯丈４の２０〜５０％に相当する部分とし、歯先２は、全歯丈の０．２〜１．２％に相当する距離だけ基準歯形形状５の歯先より内側に位置させる。
Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an enlarged view of a tooth portion of a resin gear according to an embodiment of the present invention. In the resin gear according to the present invention, the entire tooth portion 1 is made of resin. Then, the tooth surface of the
本発明に係る樹脂製歯車は、成形により歯形形成した樹脂製歯車、ホブ切加工により歯形形成した樹脂製歯車、ホブ切加工後にシェービング加工仕上げで歯形形成した樹脂製歯車などである。
特に、ホブ切加工後にシェービング加工仕上げで歯形形成した場合は、歯形精度が向上し歯面粗さが小さくなるので、噛み合い時の振動や騒音が低減するため好ましい。
The resin gear according to the present invention includes a resin gear having a tooth profile formed by molding, a resin gear having a tooth profile formed by hobbing, a resin gear having a tooth profile formed by a shaving finish after hobbing.
In particular, when a tooth profile is formed by a shaving finish after hobbing, the tooth profile accuracy is improved and the tooth surface roughness is reduced, so that vibration and noise during meshing are reduced, which is preferable.
実施例１
液状樹脂（熱硬化性樹脂）として、次のものを準備した。２，２’−（１，３フェニレン）ビス−２−オキサゾリン（（Ａ）成分）と４，４’−ジアミノジフェニルメタン（（Ｂ）成分）をモル比２／１（質量比６９／３１）の配合割合で加熱混合溶解して液状物とする。これに、硬化促進剤としてｎ−オクチルブロマイドを配合する。硬化促進剤の配合量は、（Ａ）（Ｂ）成分の総量１００質量部に対して１質量部である。
Example 1
The following were prepared as a liquid resin (thermosetting resin). 2,2 ′-(1,3-phenylene) bis-2-oxazoline (component (A)) and 4,4′-diaminodiphenylmethane (component (B)) in a molar ratio of 2/1 (mass ratio 69/31) It is heated and mixed and dissolved at a blending ratio to obtain a liquid material. To this, n-octyl bromide is blended as a curing accelerator. The compounding quantity of a hardening accelerator is 1 mass part with respect to 100 mass parts of total amounts of (A) and (B) component.
本実施例では、補強繊維基材として、次のものを準備した。しかし、これに限定されるものではない。
メタ型アラミド繊維とパラ型アラミド繊維の混紡糸を丸編みして丸編み筒状体を構成する。この丸編み筒状体を端部から裏返して軸方向に巻き上げて、外径７７mm，内径５０mm，厚さ１０mmのリング状補強繊維基材とする。
In this example, the following was prepared as the reinforcing fiber base. However, it is not limited to this.
A circular knitted cylindrical body is formed by circularly knitting a mixed yarn of meta-type aramid fiber and para-type aramid fiber. The circular knitted tubular body is turned upside down and wound up in the axial direction to obtain a ring-shaped reinforcing fiber substrate having an outer diameter of 77 mm, an inner diameter of 50 mm, and a thickness of 10 mm.
２個積み重ねた上記リング状補強繊維基材と、その中央にインサートとして金属製ブッシュを配置し、２００℃の成形金型に収容する。成形金型は、リング状補強繊維基材の厚さ方向に開閉動作するものであり、成形金型を閉じる動作によりリング状補強繊維基材を圧縮して、面方向に広がったリング状補強繊維基材を金属製ブッシュの周囲に圧接してその形状になじませる。そして、成形金型内を減圧状態とする。次に、閉じた成形金型に上記液状樹脂を注入し、リング状補強繊維基材に浸透させた液状樹脂を加熱硬化して金属製ブッシュをインサートとするアラミド繊維基材強化樹脂成形体を成形する。 Two ring-shaped reinforcing fiber bases stacked one above the other and a metal bush as an insert at the center thereof are accommodated in a 200 ° C. molding die. The molding die opens and closes in the thickness direction of the ring-shaped reinforcing fiber base material, and the ring-shaped reinforcing fiber spreads in the surface direction by compressing the ring-shaped reinforcing fiber base material by closing the molding die. The substrate is pressed around the metal bush to conform to its shape. Then, the inside of the molding die is brought into a reduced pressure state. Next, the liquid resin is injected into a closed mold, and the liquid resin that has permeated the ring-shaped reinforcing fiber base is heated and cured to form an aramid fiber base reinforced resin molded body using a metal bush as an insert. To do.
前記アラミド繊維基材強化樹脂成形体を、表１に示す寸法に切削加工を行い、樹脂製歯車を得た。なお、歯先部分は、基準歯形形状の歯面より内側に位置させるように形成した。このときの歯先部分は、歯先から全歯丈の１８％に相当する部分（以下（ａ）とする）とし、歯先部分において、歯先は全歯丈の０．３％に相当する距離だけ基準歯形形状の歯先より内側に位置（以下（ｂ）とする）させた。
上記の切削加工は、ホブ切加工とその後にシェービング加工仕上げとした。
The aramid fiber base reinforced resin molded body was cut into the dimensions shown in Table 1 to obtain a resin gear. The tooth tip portion was formed so as to be positioned inside the tooth surface of the reference tooth profile shape. The tooth tip portion at this time is a portion corresponding to 18% of the total tooth height from the tooth tip (hereinafter referred to as (a)), and in the tooth tip portion, the tooth tip corresponds to 0.3% of the total tooth height. The distance was set to the inside (hereinafter referred to as (b)) from the tooth tip of the reference tooth profile shape.
The cutting process described above was a hobbing process followed by a shaving finish.
実施例２〜８
実施例１において、（ａ）及び（ｂ）を、各例毎にそれぞれ表２に示すとおりとする以外は実施例１と同様にして、樹脂製歯車を得た。
Examples 2-8
In Example 1, resin gears were obtained in the same manner as in Example 1 except that (a) and (b) were as shown in Table 2 for each example.
従来例１
実施例１において、歯先部分を、基準歯形形状とする以外は実施例１と同様にして、樹脂製歯車を得た。
Conventional Example 1
In Example 1, a resin gear was obtained in the same manner as in Example 1 except that the tooth tip portion had a reference tooth profile shape.
上記実施例、従来例で作製した樹脂製歯車を用いて、圧力角誤差変化量、両歯面１ピッチ噛み合い誤差を測定した結果を表２に示す。測定方法は、以下に示すとおりである。
圧力角誤差変化量：処理前後の樹脂製歯車の圧力角誤差を測定し、圧力角誤差変化量を求めた。なお、処理条件は、水を１０質量％含むエンジンオイル中６０℃−２００時間である。圧力角誤差の測定は、旧ＪＩＳ−Ｂ−１７５２（平歯車及びはすば歯車測定方法）に準じて測定した。
両歯面１ピッチ噛み合い誤差：旧ＪＩＳ−Ｂ−１７５２（平歯車及びはすば歯車測定方法）に準じて測定した。
Table 2 shows the results of measuring the pressure angle error change amount and the 1-pitch meshing error of both tooth surfaces using the resin gears produced in the above examples and conventional examples. The measuring method is as follows.
Pressure angle error variation: The pressure angle error of the resin gear before and after the treatment was measured to determine the pressure angle error variation. In addition, a process condition is 60 degreeC-200 hours in the engine oil containing 10 mass% of water. The pressure angle error was measured according to the former JIS-B-1752 (spur gear and helical gear measuring method).
1 pitch meshing error of both tooth surfaces: Measured according to old JIS-B-1752 (spur gear and helical gear measuring method).
表２に示すように、本発明に係る樹脂製歯車は、歯先部分の歯面を、基準歯形形状の歯面より内側に位置させたことにより、圧力角誤差変化量が小さく、吸湿により歯形形状が変化した場合においても、基準歯形形状からの膨潤変化を小さく抑えることができる（実施例１〜８と従来例１の対比）。このため、歯車の回転速度がばらついたり、歯車がスムーズに回転しなくなったりするなど噛み合い時の異常や、バックラッシ量の減少による異音が発生する心配がない。 As shown in Table 2, the resin gear according to the present invention has a small change in pressure angle error because the tooth surface of the tooth tip portion is positioned on the inner side of the tooth surface of the reference tooth profile, and the tooth profile due to moisture absorption. Even when the shape changes, the swelling change from the reference tooth profile shape can be kept small (contrast of Examples 1-8 and Conventional Example 1). For this reason, there is no fear of meshing abnormalities such as fluctuations in the rotation speed of the gears or the gears not rotating smoothly, or abnormal noise due to a decrease in the amount of backlash.
また、歯先部分を、歯先から全歯丈の２０〜５０％に相当する部分とし、歯先部分において、歯先は全歯丈の０．２〜１．２％に相当する距離だけ基準歯形形状の歯先より内側に位置させたことにより、圧力角誤差変化量をさらに小さくでき、基準歯形形状から膨潤の変化をさらに小さく抑えることができる（実施例２、４、５、７と実施例１、３、６、８の対比）。なお、実施例６及び８では、両歯面１ピッチ噛み合い誤差が大きくなり、初期（吸湿前）の状態において、実用上使用のない範囲で、歯車の回転にガタが生じたり、歯打ち音が大きくなったりする場合がある。 In addition, the tooth tip portion is a portion corresponding to 20 to 50% of the total tooth height from the tooth tip, and the tooth tip in the tooth tip portion is based on a distance corresponding to 0.2 to 1.2% of the total tooth height. By being positioned inside the tooth tip of the tooth profile shape, the pressure angle error change amount can be further reduced, and the swelling change can be further suppressed from the reference tooth profile shape (implemented with Examples 2, 4, 5, and 7). Comparison of Examples 1, 3, 6, 8). In Examples 6 and 8, both the tooth surface 1 pitch meshing error becomes large, and in the initial state (before moisture absorption), rattling occurs in the rotation of the gear within a range not practically used, and rattling noise occurs. It may become bigger.
１は歯部
２は歯先
３は歯先部分
４は全歯丈
５は基準歯形形状
1 is a
Claims (2)
歯先部分の歯面を、基準歯形形状の歯面より内側に位置させたことを特徴とする樹脂製歯車。 A resin gear whose entire tooth portion is made of resin,
A resin gear characterized in that a tooth surface of a tooth tip portion is positioned inside a tooth surface of a reference tooth profile shape.
前記歯先部分において、歯先は全歯丈の０．２〜１．２％に相当する距離だけ基準歯形形状の歯先より内側に位置させたことを特徴とする請求項１記載の樹脂製歯車。 The tooth tip portion is a portion corresponding to 20 to 50% of the total tooth height from the tooth tip,
The resin tip according to claim 1, wherein, in the tip portion, the tip is positioned inside the tip of the reference tooth profile by a distance corresponding to 0.2 to 1.2% of the total tooth height. gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009023263A JP5458587B2 (en) | 2009-02-04 | 2009-02-04 | Resin gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009023263A JP5458587B2 (en) | 2009-02-04 | 2009-02-04 | Resin gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2010180918A true JP2010180918A (en) | 2010-08-19 |
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| JP2009023263A Active JP5458587B2 (en) | 2009-02-04 | 2009-02-04 | Resin gear |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020129211A1 (en) * | 2018-12-20 | 2020-06-25 | 本田技研工業株式会社 | Auxiliary gear for internal combustion engine |
| JPWO2021079685A1 (en) * | 2019-10-23 | 2021-04-29 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS586039U (en) * | 1981-07-06 | 1983-01-14 | 株式会社田村電機製作所 | gear |
| JP2004068855A (en) * | 2002-08-02 | 2004-03-04 | Toyota Motor Corp | Gearing mechanism |
| JP2005319617A (en) * | 2004-05-06 | 2005-11-17 | Shin Kobe Electric Mach Co Ltd | Aramid fiber for reinforcing gear made of resin, aramid fiber base material for reinforcing gear made of resin and gear made of fiber reinforced resin |
| JP2008162352A (en) * | 2006-12-27 | 2008-07-17 | Jtekt Corp | Electric power steering device |
| JP2008240793A (en) * | 2007-03-26 | 2008-10-09 | Enplas Corp | Resin-made gear |
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- 2009-02-04 JP JP2009023263A patent/JP5458587B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS586039U (en) * | 1981-07-06 | 1983-01-14 | 株式会社田村電機製作所 | gear |
| JP2004068855A (en) * | 2002-08-02 | 2004-03-04 | Toyota Motor Corp | Gearing mechanism |
| JP2005319617A (en) * | 2004-05-06 | 2005-11-17 | Shin Kobe Electric Mach Co Ltd | Aramid fiber for reinforcing gear made of resin, aramid fiber base material for reinforcing gear made of resin and gear made of fiber reinforced resin |
| JP2008162352A (en) * | 2006-12-27 | 2008-07-17 | Jtekt Corp | Electric power steering device |
| JP2008240793A (en) * | 2007-03-26 | 2008-10-09 | Enplas Corp | Resin-made gear |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020129211A1 (en) * | 2018-12-20 | 2020-06-25 | 本田技研工業株式会社 | Auxiliary gear for internal combustion engine |
| CN113195942A (en) * | 2018-12-20 | 2021-07-30 | 本田技研工业株式会社 | Auxiliary gear for internal combustion engine |
| JPWO2021079685A1 (en) * | 2019-10-23 | 2021-04-29 | ||
| WO2021079685A1 (en) * | 2019-10-23 | 2021-04-29 | 住友電工焼結合金株式会社 | Gear member |
| JP7327835B2 (en) | 2019-10-23 | 2023-08-16 | 住友電工焼結合金株式会社 | gear member |
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| JP5458587B2 (en) | 2014-04-02 |
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