JP4157488B2 - Engine starter - Google Patents

Engine starter Download PDF

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Publication number
JP4157488B2
JP4157488B2 JP2004095813A JP2004095813A JP4157488B2 JP 4157488 B2 JP4157488 B2 JP 4157488B2 JP 2004095813 A JP2004095813 A JP 2004095813A JP 2004095813 A JP2004095813 A JP 2004095813A JP 4157488 B2 JP4157488 B2 JP 4157488B2
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Prior art keywords
output shaft
pinion gear
bearing
end surface
engine
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JP2005282430A (en
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秀和 馬場
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Priority to JP2004095813A priority Critical patent/JP4157488B2/en
Priority to DE102004044932.5A priority patent/DE102004044932B4/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
    • F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
    • F02N15/06—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement
    • F02N15/062—Starter drives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
    • F02N15/022—Gearing between starting-engines and started engines; Engagement or disengagement thereof the starter comprising an intermediate clutch
    • F02N15/023—Gearing between starting-engines and started engines; Engagement or disengagement thereof the starter comprising an intermediate clutch of the overrunning type

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gear Transmission (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Description

この発明は、機関の始動装置に関し、特に、ピニオンギヤとリングギヤとが常時噛合い方式の始動装置において、ピニオンギヤと出力軸とのガタツキを防止するようにした機関始動装置に関するものである。   The present invention relates to an engine starting device, and more particularly, to an engine starting device that prevents rattling between a pinion gear and an output shaft in a starting device in which a pinion gear and a ring gear are always meshed.

ピニオンギヤを出力軸に固定する方法として、例えば特開２００２−１９５１４０号公報（特許文献１と称す。）に記載のように、テーパー付の止め輪を用いて、止め輪の内径方向に収縮しようとする弾力の軸方向への分力によりピニオンの移動を規制しているものがある。   As a method of fixing the pinion gear to the output shaft, for example, as described in Japanese Patent Application Laid-Open No. 2002-195140 (referred to as Patent Document 1), an attempt is made to contract in the inner diameter direction of the retaining ring using a tapered retaining ring. Some pinions are restricted by the axial force of the elastic force.

特開２００２−１９５１４０号公報JP 2002-195140 A

しかし、上記特許文献１に示される従来のような方法では、ピニオンギヤと出力軸の回り止めを、単にスプライン結合にて行っているため、回転方向のガタツキが発生する。
そして、エンジン始動時にはエンジン回転変動の影響を受けるが、この時にテーパ付の止め輪により発生する軸方向への分力では、回転方向のガタツキを阻止することが出来ないため、ピニオンギヤと出力軸のスプライン部の衝突が繰り返され摩耗が発生する。
この摩耗が進行するとガタツキが大きくなり、ピニオンギヤの位置精度の悪化となり、噛合い騒音の増加となる。 However, in the conventional method disclosed in Patent Document 1, since the pinion gear and the output shaft are simply prevented from rotating by spline coupling, the rotation direction rattle occurs.
When the engine is started, it is affected by fluctuations in engine rotation. However, since the axial force generated by the tapered retaining ring at this time cannot prevent backlash in the rotational direction, the pinion gear and the output shaft The spline collides repeatedly and wear occurs.
As this wear progresses, rattling increases, the position accuracy of the pinion gear deteriorates, and meshing noise increases.

この発明は、このような問題点に鑑み成されたもので、ピニオンギヤの位置精度を向上させると共に、スプライン部の摩耗を抑制して、ピニオンギヤとリングギヤの噛合い騒音を低減するようにした機関始動装置を提供することを目的とするものである。   The present invention has been made in view of the above problems, and improves the position accuracy of the pinion gear and suppresses wear of the spline portion, thereby reducing the meshing noise between the pinion gear and the ring gear. The object is to provide an apparatus.

（１） この発明に係る機関始動装置は、始動電動機を内蔵するブラケットに固定された軸受けに回転可能に軸支され、前記電動機によって回転駆動される出力軸と、この出力軸の端部に、該出力軸に対し回転規制された状態で装着されるピニオンギヤを備えた機関の始動装置において、前記出力軸には、前記軸受けの内輪の軸方向端面が当接するスラスト受け面と、端部に形成されたねじ部が設けられ、前記ピニオンギヤは、軸受け側の端面が前記軸受けの内輪のピニオンギヤ側端面に当接するよう配置され、前記ねじ部に取り付けられるねじの締め付け力により、前記ピニオンギヤを前記軸受け側に押圧し、前記スラスト受け面と前記ピニオンギヤの軸受け側の端面とが前記軸受けの内輪を挟持するようにして、前記ピニオンギヤと前記出力軸と前記軸受けとを一体に固着すると共に、前記ピニオンギヤの外周の一部または出力軸の先端端面に、ナット形状またはＨカット形状等の回り止め部を設けたものである。さらに (1) An engine starter according to the present invention is rotatably supported by a bearing fixed to a bracket having a built-in starter motor, and is rotatably driven by the motor, and an end of the output shaft, In an engine starter having a pinion gear mounted in a state in which rotation with respect to the output shaft is restricted, a thrust receiving surface with which an axial end surface of an inner ring of the bearing abuts is formed at the output shaft. The pinion gear is disposed such that an end surface on the bearing side abuts on an end surface on the pinion gear side of the inner ring of the bearing, and the pinion gear is moved to the bearing side by a tightening force of a screw attached to the screw portion. So that the thrust receiving surface and the end surface on the bearing side of the pinion gear sandwich the inner ring of the bearing so that the pinion gear and the output The force shaft and the bearing are integrally fixed, and a rotation preventing portion such as a nut shape or an H cut shape is provided on a part of the outer periphery of the pinion gear or the tip end face of the output shaft . further

（２） また、この発明に係る機関始動装置は、前記（１）の機関始動装置において、
シール部材を、前記軸受けの反ピニオン側に配設すると共に、該シール部材と前記軸受けとの間に潤滑材を封入したものである。 (2) Moreover, the engine starter according to the present invention is the engine starter of (1),
A seal member is disposed on the side opposite to the pinion of the bearing, and a lubricant is sealed between the seal member and the bearing.

（３） また、前記（１）または（２）の機関始動装置において、
前記ピニオンギヤの内周部に、歯面ピッチと同軸な嵌め合い部を形成し、前記嵌め合い部と前記出力軸とを同軸に結合させることによって、ピニオンギヤ歯面ピッチと前記出力軸を同軸に連結するようにしたものである。 (3) In the engine starting device of (1) or (2),
A pinion gear tooth surface pitch and the output shaft are connected coaxially by forming a fitting portion coaxial with the tooth surface pitch on the inner peripheral portion of the pinion gear and coupling the fitting portion and the output shaft coaxially. It is what you do.

（５） さらにまた、この発明に係る機関始動装置は、前記（１）〜（３）の機関始動装置において、
前記出力軸のねじ部は、出力軸先端の内側に形成されたねじ穴であって、前記ピニオンギヤの先端内周側には段差部が形成され、前記ねじ穴にねじを締め付けることによって前記段差部を軸受け側に押圧し、前記ピニオンギヤと前記出力軸と前記軸受けとを一体に固着するようにしたものである。 (5) Furthermore, the engine starter according to the present invention is the engine starter according to (1) to (3),
The threaded portion of the output shaft is a screw hole formed inside the tip of the output shaft, a stepped portion is formed on the inner peripheral side of the tip of the pinion gear, and the stepped portion is tightened with a screw in the screw hole. Is pressed to the bearing side so that the pinion gear, the output shaft and the bearing are fixed together.

この発明の機関始動装置によれば、ピニオンギヤと出力軸とが軸受けを挟持するようにして一体に固着されているので、ピニオンギヤおよび出力軸の軸方向への移動、および出力軸に対するピニオンギヤの回転方向のガタツキを防止することができる。これによって、ピニオンギヤと出力軸のスプライン部の摩耗や、ピニオンギヤとリングギヤの磨耗を抑制することができ、リングギヤとの噛合い精度の向上や、始動時の噛合い騒音を低減することができる。   According to the engine starting device of the present invention, the pinion gear and the output shaft are integrally fixed so as to sandwich the bearing, so that the pinion gear and the output shaft move in the axial direction, and the rotation direction of the pinion gear with respect to the output shaft Can be prevented. As a result, wear of the spline portion of the pinion gear and the output shaft and wear of the pinion gear and the ring gear can be suppressed, the meshing accuracy with the ring gear can be improved, and the meshing noise at the start can be reduced.

実施の形態１．
以下、この発明の実施の形態１の機関始動装置を図にもとづいて説明する。
なお、図中、同一符号は、同一または相当部分を示すものとする。
図１は、この発明の実施の形態１による機関始動装置の一部を断面とする概略全体構成図、図２は、実施の形態１の主要部であるピニオンギヤ機構部を示す部分断面図、図３は、軸受け側から見たピニオンギヤの形状の一例を示す図である。
図１に示すように、機関始動装置は、マグネットスイッチ１０１と、モータ１０２と、ヨーク１０３とフロントブラケット２内に配置された遊星歯車減速機構（図辞せず）と、ピニオンギヤ機構部１（詳細は後述する。）等から構成されている。
機関の始動時、車両のキースイッチを介してバッテリからの電流を、マグネットスイッチ１０１を通じてモータ１０２の電機子コイルに通電し、モータの回転軸を回転駆動させる。モータの回転は、モータの回転軸から遊星歯車減速機構を介して出力軸３に減速して伝達され、出力軸３に装着されたピニオンギヤ５を介して機関のリングギヤ１０４を回転駆動して機関を始動させる。機関が始動すると、リングギヤを介してピニオンギヤ５を駆動しようとするが、機関のクランク軸とリングギヤ間に装着された一方向クラッチによりピニオンギヤ５は空転され、リングギヤ側の回転力はピニオンギヤ５に伝達されない。同時にマグネットスイッチはオフされ、モータへの通電が断たれて、モータは停止される。 Embodiment 1 FIG.
Hereinafter, an engine starter according to Embodiment 1 of the present invention will be described with reference to the drawings.
In addition, in the figure, the same code | symbol shall show the same or an equivalent part.
FIG. 1 is a schematic overall configuration diagram showing a cross section of a part of an engine starter according to Embodiment 1 of the present invention, and FIG. 2 is a partial cross-sectional view showing a pinion gear mechanism which is a main part of Embodiment 1. 3 is a diagram illustrating an example of the shape of the pinion gear as viewed from the bearing side.
As shown in FIG. 1, the engine starter includes a magnet switch 101, a motor 102, a yoke 103, a planetary gear speed reduction mechanism (not shown) disposed in the front bracket 2, and a pinion gear mechanism 1 (details). Is described later).
When the engine is started, current from the battery is supplied to the armature coil of the motor 102 through the magnet switch 101 through the vehicle key switch, and the rotation shaft of the motor is driven to rotate. The rotation of the motor is decelerated and transmitted from the rotation shaft of the motor to the output shaft 3 via the planetary gear reduction mechanism, and the engine is driven by rotating the ring gear 104 of the engine via the pinion gear 5 mounted on the output shaft 3. Start. When the engine is started, the pinion gear 5 is driven via the ring gear. However, the pinion gear 5 is idled by the one-way clutch mounted between the crankshaft of the engine and the ring gear, and the rotational force on the ring gear side is not transmitted to the pinion gear 5. . At the same time, the magnet switch is turned off, the power supply to the motor is cut off, and the motor is stopped.

次に、この発明の主要部であるピニオンギヤ機構部１の詳細について、図２、図３を用いて説明する。
図２において、３は、フロントブラケット２に配設された軸受４に軸支持された出力軸であり、前述のようにモータ（図示せず）によって回転駆動される。
出力軸３には、後述のピニオンギヤ５と嵌合する、スプライン３ａおよび嵌め合い部３ｂが設けられ、さらに、軸受け４の内輪４ａに当接するスラスト受け面３ｃと、先端外周にねじ部３ｄが形成されている。５は、出力軸３に装着されるピニオンギヤで、ピニオンギヤ５の内周には、出力軸３のスプライン３ａ、および嵌め合い部３ｂに対応して、スプライン５ａ、および嵌め合い部５ｂが形成され、それぞれ対応する部分が回り止めおよび同軸度を向上させるように結合されている。
また、ピニオンギヤ５の軸受け４側の端部には、軸受４の内輪４ａに当接する端面５ｃが形成され、さらに、図３に示すように、ピニオンギヤ５の外周部分の一部に、ナット形状（図３ａ）またはHカット形状（図３ｃ）の回り止め５ｄが設けられている。
６は、軸受け４の反ピニオン側に設けられたシール部材であり、軸受４との間にはグリースなどの潤滑油が封入されている。
７は、出力軸３のねじ部３ｄに装着されたナットである。 Next, details of the pinion gear mechanism 1 which is the main part of the present invention will be described with reference to FIGS.
In FIG. 2, reference numeral 3 denotes an output shaft that is supported by a bearing 4 disposed on the front bracket 2 and is rotationally driven by a motor (not shown) as described above.
The output shaft 3 is provided with a spline 3a and a fitting portion 3b that are fitted to a pinion gear 5 described later, and further, a thrust receiving surface 3c that comes into contact with the inner ring 4a of the bearing 4 and a threaded portion 3d formed on the outer periphery of the tip. Has been. Reference numeral 5 denotes a pinion gear attached to the output shaft 3, and on the inner periphery of the pinion gear 5, a spline 5a and a fitting portion 5b are formed corresponding to the spline 3a and the fitting portion 3b of the output shaft 3, Corresponding portions are connected to improve the detent and the coaxiality.
Further, an end surface 5c that abuts against the inner ring 4a of the bearing 4 is formed at the end of the pinion gear 5 on the bearing 4 side. Further, as shown in FIG. 3, a part of the outer periphery of the pinion gear 5 has a nut shape ( A detent 5d of FIG. 3a) or H-cut shape (FIG. 3c) is provided.
Reference numeral 6 denotes a seal member provided on the side opposite to the pinion of the bearing 4, and lubricating oil such as grease is sealed between the bearing 4.
Reference numeral 7 denotes a nut attached to the threaded portion 3 d of the output shaft 3.

以上のように構成された実施の形態１の機関始動装置においては、出力軸３のスラスト受け面３ｃと、ピニオンギヤ５の端面５ｃが、軸受４の内輪４ａに当接し、ナット７の締め付け力によって、軸受４の内輪４ａを、スラスト受け面３ｃと、ピニオンギヤ５の端面５ｃが挟持するようにして、出力軸３と軸受４およびピニオンギヤ５を一体に固着している。   In the engine starting device of the first embodiment configured as described above, the thrust receiving surface 3c of the output shaft 3 and the end surface 5c of the pinion gear 5 are in contact with the inner ring 4a of the bearing 4, and the tightening force of the nut 7 The output shaft 3, the bearing 4, and the pinion gear 5 are integrally fixed so that the inner ring 4 a of the bearing 4 is sandwiched between the thrust receiving surface 3 c and the end surface 5 c of the pinion gear 5.

したがって、ナット７の締め付け力により、出力軸３と軸受４およびピニオンギヤ５を強固に固着することができるので、ピニオンギヤおよび出力軸の軸方向への移動、および出力軸に対するピニオンギヤの回転方向のガタツキを防止することができる。
また、これによって、ピニオンギヤと出力軸のスプライン部の摩耗や、ピニオンギヤとリングギヤの磨耗を抑制することができる。 Therefore, since the output shaft 3 and the bearing 4 and the pinion gear 5 can be firmly fixed by the tightening force of the nut 7, the movement of the pinion gear and the output shaft in the axial direction and the play in the rotation direction of the pinion gear with respect to the output shaft are prevented. Can be prevented.
Further, this can suppress wear of the spline portion of the pinion gear and the output shaft and wear of the pinion gear and the ring gear.

また、ピニオンギヤ５の内周部に、スプライン５ａと共に、歯面ピッチと同軸な嵌め合い部５ｂを形成し、この嵌め合い部５ｂを出力軸の嵌め合い部３ｂに嵌め込むようにしているので、ピニオンギヤ５と出力軸３の同軸度を確保することができる。
これによって、軸受け４を介してピニオンギヤ５とブラケットインロー部の同軸度を向上させることができ、ピニオンギヤとリングギヤとの噛合い率や、噛合い精度の向上を図ることができ、始動時のギヤ騒音および磨耗を低減することができる。 In addition, a fitting portion 5b coaxial with the tooth surface pitch is formed on the inner peripheral portion of the pinion gear 5 together with the spline 5a, and the fitting portion 5b is fitted into the fitting portion 3b of the output shaft. The coaxiality of the output shaft 3 can be ensured.
As a result, the coaxiality between the pinion gear 5 and the bracket spigot portion can be improved via the bearing 4, the meshing rate between the pinion gear and the ring gear and the meshing accuracy can be improved, and the gear noise at the start can be improved. And wear can be reduced.

また、出力軸３のねじ部３ｄに螺合するナット７を締め付ける際には、出力軸３を固定することが必要となるが、ピニオンギヤ５の外周部の一部に、ナット形状あるいはHカット形状等の回り止め５ｄが設けられているので、この回り止め５ｄを工具で挟持しピニオンギヤ５を固定することにより、出力軸３はスプライン部を介して固定され、ナット７の出力軸３への締め付け作業が容易となる。
なお、上記図２においては、回り止め５ｄをピニオンギヤ５の軸受４側に設けた場合について説明したが、ナット７側に設けてもよい。 Further, when tightening the nut 7 to be screwed into the thread portion 3d of the output shaft 3, it is necessary to fix the output shaft 3, but a nut shape or an H cut shape is formed on a part of the outer peripheral portion of the pinion gear 5. Therefore, the output shaft 3 is fixed via the spline portion, and the nut 7 is fastened to the output shaft 3 by fixing the pinion gear 5 by holding the rotation stop 5d with a tool. Work becomes easy.
In FIG. 2, the case where the rotation stopper 5d is provided on the bearing 4 side of the pinion gear 5 has been described, but it may be provided on the nut 7 side.

さらに、シール部材６を軸受け４の反ピニオン側に設け、軸受４との間にグリースなどの潤滑材を封入するようにしているので、始動装置内への防油、防塵が可能となり、また、シール部材と出力軸との摺動部の潤滑が良好となりシール部材の耐久性が向上する。   Furthermore, since the seal member 6 is provided on the side opposite to the pinion of the bearing 4 and a lubricant such as grease is sealed between the bearing 4 and the bearing 4, oil and dust can be prevented from entering the starter. Lubrication of the sliding portion between the seal member and the output shaft is improved, and the durability of the seal member is improved.

実施の形態２．
図４は、この発明の実施の形態２の機関始動装置の一部を断面とする図である。
図４において、実施の形態２の始動装置は、実施の形態１とは、ピニオンギヤ５の固定方法が異なる以外は基本的には同じ構成となるため、以下相違点についてのみ説明する。
出力軸３には、先端部の内側にねじ穴３eが設けられている。また、ピニオンギヤ５の
先端内周側に、段差部５ｅが形成されている。８は、段差部５ｅに係合してねじ９の締め付け力でピニオンギヤ５を軸方向に押圧するワッシャ、９は、ねじ穴３eに螺合され、ワッシャ８を介して出力軸３と軸受４およびピニオンギヤ５を一体に固着するねじである。 Embodiment 2. FIG.
FIG. 4 is a cross-sectional view of a part of the engine starting device according to Embodiment 2 of the present invention.
In FIG. 4, the starting device of the second embodiment basically has the same configuration as that of the first embodiment except that the fixing method of the pinion gear 5 is different. Therefore, only the differences will be described below.
The output shaft 3 is provided with a screw hole 3e inside the tip. Further, a step portion 5 e is formed on the inner peripheral side of the tip end of the pinion gear 5. 8 is a washer that engages with the step portion 5e and presses the pinion gear 5 in the axial direction by the tightening force of the screw 9, and 9 is screwed into the screw hole 3e, and the output shaft 3 and the bearing 4 through the washer 8 This is a screw for fixing the pinion gear 5 together.

この実施の形態２によれば、実施の形態１と同様の効果を得ることができると共に、ピニオンギヤ５の内径部分にねじ９を配置することで、始動装置全長の長さを短縮することができる。   According to the second embodiment, the same effect as in the first embodiment can be obtained, and the screw 9 is arranged on the inner diameter portion of the pinion gear 5 so that the total length of the starting device can be shortened. .

実施の形態３．
図５は、この発明の実施の形態３の機関始動装置における出力軸の断面を示す図である。この実施の形態３の機関始動装置は、図５に示すように、出力軸３の先端ねじ部３ｄの内側に、例えばナット形状のような凹形状回り止め部３ｆを形成し、ピニオンギヤ５の回り止め５ｄを不要としたものである。
なお、実施の形態３における始動装置の構成は、上記以外は図２の実施の形態１の構成と同じであるため、ここでの説明は省略する。 Embodiment 3 FIG.
FIG. 5 is a view showing a cross section of the output shaft in the engine starting device according to Embodiment 3 of the present invention. As shown in FIG. 5, the engine starter according to the third embodiment forms a concave detent portion 3 f such as a nut shape on the inner side of the tip screw portion 3 d of the output shaft 3. The stop 5d is unnecessary.
Since the configuration of the starting device in the third embodiment is the same as that of the first embodiment in FIG. 2 except for the above, the description thereof is omitted here.

この実施の形態３によれば、実施の形態１と同様の効果を得ることができると共に、ピニオンギヤ側に回り止めを設ける必要がなく、装置全長の短縮が可能となる。   According to the third embodiment, the same effects as those of the first embodiment can be obtained, and it is not necessary to provide a detent on the pinion gear side, so that the overall length of the apparatus can be shortened.

この発明の実施の形態１による機関始動装置の一部を断面とする概略全体構成図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic overall configuration diagram showing a cross section of a part of an engine starter according to Embodiment 1 of the present invention. この発明の実施の形態１におけるピニオンギヤ機構部を示す部分断面図The fragmentary sectional view which shows the pinion gear mechanism part in Embodiment 1 of this invention この発明の実施の形態１におけるピニオンギヤを軸受側から見たときの形状を示す図である。It is a figure which shows a shape when the pinion gear in Embodiment 1 of this invention is seen from the bearing side. この発明の実施の形態２の機関始動装置の一部を断面とする図である。It is a figure which makes a part of engine starting device of Embodiment 2 of this invention a section. この発明の実施の形態３における出力軸の断面を示す図である。It is a figure which shows the cross section of the output shaft in Embodiment 3 of this invention.

符号の説明Explanation of symbols

２：フロントブラケット、 ３：出力軸、 ３ａ：スプライン、
３ｂ：嵌め合い部、 ３ｃ：スラスト受け面、 ３ｄ：ねじ部、
３ｅ：回り止め、 ４：軸受、 ４ａ：内輪、５：ピニオンギヤ、
５ａ：スプライン、 ５ｂ：嵌め合い部、 ５ｃ：端面、５ｄ：回り止め、
６：シール部材、 ７：ナット、 ８：ワッシャ、 ９：ねじ
１０１：マグネットスイッチ、 １０２：モータ、 １０４：リングギヤ 2: Front bracket, 3: Output shaft, 3a: Spline,
3b: fitting part, 3c: thrust receiving surface, 3d: screw part,
3e: non-rotating, 4: bearing, 4a: inner ring, 5: pinion gear,
5a: spline, 5b: fitting part, 5c: end face, 5d: detent,
6: Seal member, 7: Nut, 8: Washer, 9: Screw 101: Magnet switch, 102: Motor, 104: Ring gear

Claims (8)

始動電動機を内蔵するブラケットに固定された軸受けに回転可能に軸支され、前記電動機によって回転駆動される出力軸と、この出力軸の端部に、該出力軸に対し回転規制された状態で装着されるピニオンギヤを備えた機関の始動装置において、前記出力軸には、前記軸受けの内輪の軸方向端面が当接するスラスト受け面と、端部に形成されたねじ部が設けられ、前記ピニオンギヤは、軸受け側の端面が前記軸受けの内輪のピニオンギヤ側端面に当接するよう配置され、前記ねじ部に取り付けられるねじの締め付け力により、前記ピニオンギヤを前記軸受け側に押圧し、前記スラスト受け面と前記ピニオンギヤの軸受け側の端面とが前記軸受けの内輪を挟持するようにして、前記ピニオンギヤと前記出力軸と前記軸受けとを一体に固着すると共に、前記ピニオンギヤの外周の一部に、回り止めとなる形状を設けたことを特徴とする機関始動装置。 An output shaft that is rotatably supported by a bearing fixed to a bracket containing a starter motor and is driven to rotate by the motor, and is mounted on the end of the output shaft in a state where the rotation of the output shaft is restricted. In the engine starter provided with the pinion gear, the output shaft is provided with a thrust receiving surface with which an axial end surface of the inner ring of the bearing abuts, and a screw portion formed at the end, and the pinion gear is An end surface on the bearing side is disposed so as to abut on an end surface on the pinion gear side of the inner ring of the bearing, and the pinion gear is pressed toward the bearing side by a tightening force of a screw attached to the screw portion, and the thrust receiving surface and the pinion gear are and the end surface of the bearing side so as to sandwich the inner ring of the bearing, when fixing the said and said pinion gear and said output shaft bearing together To a part of the outer periphery of the pinion gear, engine starting apparatus characterized by having a shape which is detent. 前記回り止め形状は、ナット形状またはＨカット形状であることを特徴とする請求項１
に記載の機関始動装置。 The non-rotating shape is a nut shape or an H-cut shape.
The engine starter described in 1. 前記出力軸のねじ部は、出力軸先端の内側に形成されたねじ穴であって、前記ピニオンギヤの先端内周側には段差部が形成され、前記ねじ穴にねじを締め付けることによって前記段差部を軸受け側に押圧し、前記ピニオンギヤと前記出力軸と前記軸受けとを一体に固着するようにしたことを特徴とする請求項１または請求項２に記載の機関始動装置。 The threaded portion of the output shaft is a screw hole formed inside the tip of the output shaft, a stepped portion is formed on the inner peripheral side of the tip of the pinion gear, and the stepped portion is tightened with a screw in the screw hole. The engine starting device according to claim 1 or 2 , wherein the pinion gear, the output shaft and the bearing are integrally fixed together by pressing the shaft toward the bearing . 始動電動機を内蔵するブラケットに固定された軸受けに回転可能に軸支され、前記電動機によって回転駆動される出力軸と、この出力軸の端部に、該出力軸に対し回転規制された状態で装着されるピニオンギヤを備えた機関の始動装置において、前記出力軸には、前記軸受けの内輪の軸方向端面が当接するスラスト受け面と、端部に形成されたねじ部が設けられ、前記ピニオンギヤは、軸受け側の端面が前記軸受けの内輪のピニオンギヤ側端面に当接するよう配置され、前記ねじ部に取り付けられるねじの締め付け力により、前記ピニオンギヤを前記軸受け側に押圧し、前記スラスト受け面と前記ピニオンギヤの軸受け側の端面とが前記軸受けの内輪を挟持するようにして、前記ピニオンギヤと前記出力軸と前記軸受けとを一体に固着すると共に、前記出力軸のねじ部は、出力軸先端の外周面に形成され、出力軸の先端端面に、回り止めとなる凹形状を設けたことを特徴とする機関始動装置。 An output shaft that is rotatably supported by a bearing fixed to a bracket containing a starter motor and is driven to rotate by the motor, and is mounted on the end of the output shaft in a state where the rotation of the output shaft is restricted. In the engine starter provided with the pinion gear, the output shaft is provided with a thrust receiving surface with which an axial end surface of the inner ring of the bearing abuts, and a screw portion formed at the end, and the pinion gear is An end surface on the bearing side is disposed so as to abut on an end surface on the pinion gear side of the inner ring of the bearing, and the pinion gear is pressed toward the bearing side by a tightening force of a screw attached to the screw portion, and the thrust receiving surface and the pinion gear are When the pinion gear, the output shaft, and the bearing are integrally fixed so that the end surface on the bearing side sandwiches the inner ring of the bearing The threaded portion of the output shaft, the output shaft is formed on an outer peripheral surface of the tip, the tip end surface of the output shaft, the engine starting device is characterized by providing a concave shape as a detent. 前記回り止めとなる凹形状は、ナット形状であることを特徴とする請求項４に記載の機関始動装置。 The engine starting device according to claim 4 , wherein the concave shape that serves as a detent is a nut shape . シール部材を前記軸受けの反ピニオン側に配設すると共に、該シール部材と前記軸受けとの間に潤滑材を封入したことを特徴とする請求項１〜請求項５のいずれかに記載の機関始動装置。 The engine start according to any one of claims 1 to 5 , wherein a seal member is disposed on an anti-pinion side of the bearing, and a lubricant is sealed between the seal member and the bearing. apparatus. 前記ピニオンギヤの内周部に、歯面ピッチと同軸な嵌め合い部を形成し、前記嵌め合い部と前記出力軸とを同軸に結合させることによって、ピニオンギヤ歯面ピッチと前記出力軸を同軸に連結させることを特徴とする請求項１〜請求項６のいずれかに記載の機関始動装置。 A pinion gear tooth surface pitch and the output shaft are connected coaxially by forming a fitting portion coaxial with the tooth surface pitch on the inner peripheral portion of the pinion gear and coupling the fitting portion and the output shaft coaxially. The engine starter according to any one of claims 1 to 6, wherein 前記嵌め合い部は、中心軸が出力軸の中心軸と同心の円筒状体であることを特徴とする請求項７に記載の機関始動装置。 The engine starter according to claim 7 , wherein the fitting portion is a cylindrical body having a central axis concentric with a central axis of the output shaft.
JP2004095813A 2004-03-29 2004-03-29 Engine starter Expired - Fee Related JP4157488B2 (en)

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JP2004095813A JP4157488B2 (en) 2004-03-29 2004-03-29 Engine starter
DE102004044932.5A DE102004044932B4 (en) 2004-03-29 2004-09-16 Motor starting device

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DE102009055414A1 (en) 2009-12-30 2011-07-07 Robert Bosch GmbH, 70469 starter

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US1287305A (en) * 1915-03-22 1918-12-10 John O Heinze Company Transmission mechanism for motor-generators.
DE424426C (en) * 1925-05-03 1926-01-26 Fritz Haas Nut arrangement of the screw thread in starter engines
DE3931009A1 (en) * 1989-09-16 1991-03-28 Bosch Gmbh Robert TURNING DEVICE FOR INTERNAL COMBUSTION ENGINES
JP4453227B2 (en) * 2000-10-20 2010-04-21 株式会社デンソー Starter
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