JPH07705Y2 - Starter motor - Google Patents

Starter motor

Info

Publication number
JPH07705Y2
JPH07705Y2 JP1987133386U JP13338687U JPH07705Y2 JP H07705 Y2 JPH07705 Y2 JP H07705Y2 JP 1987133386 U JP1987133386 U JP 1987133386U JP 13338687 U JP13338687 U JP 13338687U JP H07705 Y2 JPH07705 Y2 JP H07705Y2
Authority
JP
Japan
Prior art keywords
rotating shaft
gear
bearing
moving cylinder
inner diameter
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 - Lifetime
Application number
JP1987133386U
Other languages
Japanese (ja)
Other versions
JPS6436661U (en
Inventor
暸 森下
啓一 古西
秀三 五十棲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP1987133386U priority Critical patent/JPH07705Y2/en
Priority to EP88114190A priority patent/EP0306815B1/en
Priority to US07/238,432 priority patent/US4899603A/en
Priority to DE8888114190T priority patent/DE3876727T2/en
Priority to KR2019880014321U priority patent/KR920000383Y1/en
Publication of JPS6436661U publication Critical patent/JPS6436661U/ja
Application granted granted Critical
Publication of JPH07705Y2 publication Critical patent/JPH07705Y2/en
Priority to HK97102441A priority patent/HK1000868A1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【考案の詳細な説明】 〔産業上の利用分野〕 この考案は機関を始動する始動電動機に関し、特に機関
のリングギヤと噛合う中空状のピニオン移動筒がフロン
トブラケット内を軸方向に移動するオーバハングタイプ
の始動電動機のピニオン移送構造の改良に関するもので
ある。[Detailed Description of the Invention] [Industrial application] The present invention relates to a starting electric motor for starting an engine, and in particular, an overhang type in which a hollow pinion moving cylinder that meshes with a ring gear of the engine moves axially in a front bracket. The present invention relates to an improvement in the pinion transfer structure of the starting electric motor.

〔従来の技術〕[Conventional technology]

第２図は例えば実開昭61−6679号公報に示された従来の
始動電動機の、特にピニオン移送構造を示す断面図であ
り、図において、（１）は出力回転軸であり、この回転
軸はヘルカルスプラインが創設された（1a）部及び小径
部（1c）を有する。FIG. 2 is a sectional view showing a conventional pinion transfer structure, for example, of a conventional starter motor disclosed in Japanese Utility Model Laid-Open No. 61-6679, in which (1) is an output rotary shaft. Has a helical spline (1a) portion and a small diameter portion (1c).

一方、この回転軸上を前後に移動するオーバーランニン
グクラッチ（10）はピニオン移動筒（２）、クラッチア
ウター（８）及びローラ（９）にて構成されている。ま
た、前記ピニオン移動筒（２）はクラッチインナー部
（2a）、フロントブラケット（12）に嵌着された軸受け
（４）内を摺動する円筒部（2b）及び機関のリングギア
（20）と噛み合う歯車創設部（2c）とから成る。また
（５）は防じんカバーであり、（６）及び（７）はピニ
オン移動筒（２）のストッパー構造を構成している。On the other hand, the overrunning clutch (10) that moves back and forth on the rotary shaft is composed of a pinion moving cylinder (2), a clutch outer (8) and a roller (9). The pinion moving cylinder (2) includes a clutch inner part (2a), a cylindrical part (2b) sliding in a bearing (4) fitted in a front bracket (12), and an engine ring gear (20). It consists of meshing gear formations (2c). Further, (5) is a dustproof cover, and (6) and (7) constitute a stopper structure of the pinion moving barrel (2).

さらに（３）はピニオン移動筒（２）の内部で歯車創設
部（2c）と円筒部（2b）に嵌着される含油軸受である。Further, (3) is an oil-impregnated bearing fitted in the gear creation portion (2c) and the cylindrical portion (2b) inside the pinion moving cylinder (2).

次に動作について説明する。図示しないマグネットスイ
ッチに電圧が印加されるとプランジャが吸収され、レバ
ーを介してオーバーランニングクラッチ（10）が前方に
移送され、オーバーランニングクラッチ（10）に組み込
まれたピニオン移動筒（２）がリングギア（20）に噛合
を始め、同時にマグネットスイッチの中の図示しない接
点が当接し、バッテリーから通電が開始され、直流電動
機の電機子が起動し、機関のリングギア（20）を駆動さ
せる。ここでピニオン移動筒（２）の先端部がストッパ
（６）と当接してその移動が完了する。Next, the operation will be described. When a voltage is applied to a magnet switch (not shown), the plunger is absorbed, the overrunning clutch (10) is transferred to the front via a lever, and the pinion moving cylinder (2) incorporated in the overrunning clutch (10) rings. The gear (20) starts meshing, and at the same time, a contact (not shown) in the magnet switch comes into contact with the gear switch to start energization from the battery to activate the armature of the DC motor and drive the ring gear (20) of the engine. Here, the tip of the pinion moving cylinder (2) comes into contact with the stopper (6) to complete the movement.

〔考案が解決しょうとする問題点〕[Problems to be solved by the device]

従来の始動電動機は以上の構成されているので含油軸受
部（３）に塗布したグリースが電機子回転軸（１）の前
方あるいは後方に逃げやすく、前記軸受部（３）の寿命
を短くするということがあった。さらにピニオンの歯形
及び歯数を小とし、歯車創設部（2c）の内部に回転軸
（１）を貫通させる場合、ピニオンの歯底肉厚及び回転
軸径のどちらかを減らすことが必要なため、したがっ
て、その強度を弱めざるを得ないという問題点があっ
た。またクラッチインナー部（2a）とクラッチアウター
（８）の芯ずれ等によりオーバーランニングクラッチ
（10）の寿命が短いという欠点があった。Since the conventional starter motor is configured as described above, the grease applied to the oil-impregnated bearing portion (3) easily escapes to the front or rear of the armature rotating shaft (1), which shortens the life of the bearing portion (3). There was an occasion. Furthermore, when the tooth profile and the number of teeth of the pinion are made small and the rotary shaft (1) is penetrated into the gear creation part (2c), it is necessary to reduce either the root thickness of the pinion or the rotary shaft diameter. Therefore, there was a problem that the strength had to be weakened. Further, there is a drawback that the life of the overrunning clutch (10) is short due to misalignment of the clutch inner part (2a) and the clutch outer part (8).

この考案は上記のような問題点を解消するためになされ
たもので、軸受寿命の長い、さらにピニオン歯強度ある
いは回転軸強度が高くでき、しかもオーバーランニング
クラッチの寿命を高めた始動電動機を得ることを目的と
する。The present invention has been made to solve the above problems, and to obtain a starting electric motor having a long bearing life, high pinion tooth strength or rotary shaft strength, and a long overrunning clutch life. With the goal.

〔問題点を解決するための手段〕[Means for solving problems]

この考案に係る始動電動機はピニオン移動筒の歯車創設
部の内径をインナー部の内径あるいは前記ピニオン移動
筒の内筒部の内径より小とし、さらに回転軸のヘリカル
スプライン部と前記回転軸の小径部との間に段付部を設
け、前記回転軸の小径部と前記歯車創設部内径との間に
微小空隙を設けたものである。また、オーバーランニン
グクラッチのクラッチアウターに偏心を規制するリング
を設けこのリングを段付部上で摺動させるようにしたも
のである。In the starting motor according to the present invention, the inner diameter of the gear forming portion of the pinion moving cylinder is made smaller than the inner diameter of the inner portion or the inner cylinder portion of the pinion moving cylinder, and the helical spline portion of the rotary shaft and the small diameter portion of the rotary shaft are made smaller. And a stepped portion is provided between the gear and the small diameter portion of the rotating shaft and the inner diameter of the gear creation portion to provide a minute gap. Further, a ring for restricting eccentricity is provided on the clutch outer of the overrunning clutch, and this ring is made to slide on the stepped portion.

〔作用〕[Action]

この考案におけるピニオン移送構造は軸受両端を微小空
隙としているため軸受に含浸したオイル及び、前記軸受
に塗布したグリース等が回転軸の前方あるいは後方に逃
げにくい構造になっている。Since the pinion transfer structure in this invention has minute gaps at both ends of the bearing, oil impregnated in the bearing and grease applied to the bearing are hard to escape to the front or the rear of the rotary shaft.

また寸法制約上厳しい歯車創設部に軸受を設けていない
ため強度上有利な回転軸径ならびにピニオン歯底肉厚を
大とすることができ、さらに軸受位置を強度上危険な断
面部に近づけ曲げモーメントを減らし、加えて段付部と
することにより回転軸径を上げているため、強度上余裕
のあるものとすることができる。また、偏心規制リング
を設けることでグリース流出防止ならびにオーバーラン
ニングクラッチの偏心を防止できる。In addition, because the bearing is not installed in the gear creation part due to strict size restrictions, it is possible to increase the rotating shaft diameter and pinion root thickness, which are advantageous in strength, and to move the bearing position closer to the cross section that is dangerous for strength. Is increased and the diameter of the rotating shaft is increased by providing a stepped portion, and therefore, there is a margin in terms of strength. Further, by providing the eccentricity restriction ring, it is possible to prevent grease outflow and prevent eccentricity of the overrunning clutch.

〔考案の実施例〕[Example of device]

以下、この考案の一実施例を図について説明する。第１
図において（１）は電機子回転軸であり、この回転軸の
前半部にはオーバーランニングクラッッチ（10）のクラ
ッチアウター（８）に創設されたヘリカルスプラインと
螺合するヘリカルスプライン部（1a）を有し、またピニ
オン移動筒（２）の筒部（2b）の内径部に嵌着された含
油軸受（３）の摺動する小径部（1c）を有し、さらには
前記スプライン部（1a）と小径部（1c）の間には前記ス
プライン部（1a）より径が小さく前記小径部（1c）より
径が大きい段付部（1b）を有している。回転軸（１）を
このようにしたので、前記段付部（1b）とインナー部
（2a）の内径との間、さらには小径部（1c）と歯車創設
部（2c）の内径との間には微小空隙を構成するとができ
る。は軸の強度上危険断面部を示す。An embodiment of the present invention will be described below with reference to the drawings. First
In the figure, (1) is an armature rotating shaft, and a helical spline part (1a) screwed with a helical spline formed in a clutch outer (8) of an overrunning clutch (10) is provided in a front half part of the rotating shaft. ), And a sliding small diameter part (1c) of the oil-impregnated bearing (3) fitted to the inner diameter part of the cylindrical part (2b) of the pinion moving cylinder (2), and further the spline part ( A stepped portion (1b) having a smaller diameter than the spline portion (1a) and a larger diameter than the small diameter portion (1c) is provided between the small diameter portion (1c) and the small diameter portion (1c). Since the rotary shaft (1) is configured in this way, it is between the stepped portion (1b) and the inner diameter of the inner portion (2a), and further between the small diameter portion (1c) and the inner diameter of the gear creation portion (2c). The micro voids can be formed in the. Indicates a dangerous cross section due to the strength of the shaft.

さらに（11）はクラッチアウター（８）に嵌着されたリ
ングであり、前記回転軸（１）の段付部（1b）上を摺動
可能な如く段付部（1b）と微小空隙を介し対向してい
る。Further, reference numeral (11) is a ring fitted to the clutch outer (8), which is slidable on the stepped portion (1b) of the rotary shaft (1) via a stepped portion (1b) and a minute gap. Facing each other.

この様に構成された実施例のものにあっては、含油軸受
（３）が装着される回転軸（１）上の前後の空隙、すな
わち、回転軸（１）の段付部（1b）外径とピニオン移動
筒（２）のインナー部（2a）内径の径方向空隙並びに回
転軸（１）の小径部（1c）外径とピニオン移動筒（２）
の歯車創設部（2c）内径との径方向空隙を、各々微少空
隙にしているので、含油軸受（３）に含浸されたオイ
ル，グリース等は前記各微少空隙から漏れにくく、大部
分は回転軸（１）の小径部（1c）と円筒部（2b）との径
方向空隙内に充てんされるため、含油軸受（３）の寿命
が向上する。In the embodiment constructed in this way, the front and rear gaps on the rotary shaft (1) on which the oil-impregnated bearing (3) is mounted, that is, outside the stepped portion (1b) of the rotary shaft (1). Diameter and inner diameter of the inner part (2a) of the pinion moving cylinder (2) and radial gap of the small diameter part (1c) of the rotating shaft (1) and the pinion moving cylinder (2)
Since the radial gap with the inner diameter of the gear creation portion (2c) of each is made into a minute gap, oil and grease impregnated in the oil-impregnated bearing (3) are unlikely to leak from each of the minute gaps, and most of them are rotating shafts. Since it is filled in the radial gap between the small diameter portion (1c) and the cylindrical portion (2b) of (1), the life of the oil-impregnated bearing (3) is improved.

また、含油軸受（３）の装着位置を回転軸（１）におけ
る強度上危険な断面部（Ａ）に近づけて曲げモーメント
を減少し、加えて回転軸（１）は段付部（1b）と小径部
（1c）とを設けることにより、特に段付部（1b）の軸径
を大に設定可能であるので機械強度を向上できる。Also, the mounting position of the oil-impregnated bearing (3) is brought closer to the cross section (A) of the rotating shaft (1), which is dangerous in terms of strength, to reduce the bending moment, and in addition, the rotating shaft (1) becomes the stepped portion (1b). By providing the small diameter portion (1c), the shaft diameter of the stepped portion (1b) can be set particularly large, so that the mechanical strength can be improved.

更に、回転軸（１）に小径部（1c）を設けることによ
り、ピニオン移動筒（２）のピニオンの歯形及び歯数を
小に設定しても、ピニオンの歯底肉厚を充分厚く設定で
きるのでピニオンの機械強度を何ら減少させることはな
い。Further, by providing the rotating shaft (1) with the small diameter portion (1c), even if the tooth profile and the number of teeth of the pinion of the pinion moving cylinder (2) are set to be small, the bottom thickness of the pinion can be set sufficiently thick. Therefore, it does not reduce the mechanical strength of the pinion at all.

しかも、クラッチアウター（８）に偏心規制リング（1
1）を設け、このリング（11）を回転軸（１）の段付部
（1b）上で摺動させるようにしているので、含油軸受
（３）からのグリースの流出が偏心規制リング（11）の
装着部で阻止されるとともに、クラッチインナー部（2
a）とクラッチアウター（８）の芯ずれ、いわゆる偏心
を防止できるのでオーバーランニングクラッチ（10）の
寿命も向上できる。Moreover, the eccentricity control ring (1
1) is provided, and this ring (11) is made to slide on the stepped portion (1b) of the rotating shaft (1), so that the outflow of grease from the oil-impregnated bearing (3) is prevented by the eccentricity regulation ring (11). ) And the clutch inner part (2
Since misalignment between a) and the clutch outer (8), that is, eccentricity can be prevented, the life of the overrunning clutch (10) can be improved.

なお、上記実施例では防じんカバー（５）をピニオン移
動筒（２）の先端に設けたものについて説明したが、も
ちろん、カバー（５）を有しないものにも適用できる。In the above embodiment, the dust-proof cover (5) is provided at the tip of the pinion moving cylinder (2), but it is of course applicable to the one without the cover (5).

また、上述では回転軸（１）が電機子回転軸であるタイ
プの始動電動機について例示したが、ピニオン移動筒
（２）内に貫挿する回転軸と電機子回転軸とが異なる内
部減速タイプの始動電動機にも適用できるものである。Further, in the above, the starter motor of the type in which the rotating shaft (1) is the armature rotating shaft has been exemplified, but the rotating shaft inserted into the pinion moving cylinder (2) and the armature rotating shaft are of different internal deceleration type. It can also be applied to a starting motor.

〔考案の効果〕[Effect of device]

以上のように、この考案によれば、回転軸とピニオン移
動筒との間に装着される軸受の軸方向両端を微小空隙と
したのでグリース等の流出を減らすことができ、さらに
は軸受装置位置を危険断面図に近づけ、軸径を太くし得
ることで、危険断面における曲げ応力を下げることがで
き、しかもオーバーランニングクラッチの偏心防止が計
れ、このクラッチの寿命も向上するので、信頼性の高い
始動電動機を提供するものである。As described above, according to the present invention, since both ends in the axial direction of the bearing mounted between the rotary shaft and the pinion moving cylinder are made into minute voids, the outflow of grease and the like can be reduced, and further, the bearing device position By making the shaft closer to the dangerous cross section and making the shaft diameter thicker, the bending stress in the dangerous cross section can be reduced, the eccentricity of the overrunning clutch can be prevented, and the life of this clutch can be extended, so it is highly reliable. A starting electric motor is provided.

【図面の簡単な説明】[Brief description of drawings]

第１図はこの考案の一実施例を示す断面図、第２図は従
来のものを示す断面図である。 図中、（１）は電機子回転軸、（1a）はスプライン部、
（1b）は段付部、（1c）は小径部、（２）はピニオン移
動筒、（2a）はインナー部、（2b）は円筒部、（2c）は
歯車創設部、（３）は含油軸受、（４）は軸受、（５）
はカバー、（６）はストッパ、（７）はリング、（８）
はクラッチアウター、（９）はローラ、（10）はオーバ
ーランニングクラッチ、（11）は偏心規制リング、（1
2）はフロントブラケットである。 尚、各図中同一符号は同一又は相当部分を示す。FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a sectional view showing a conventional one. In the figure, (1) is the armature rotating shaft, (1a) is the spline section,
(1b) is a stepped portion, (1c) is a small diameter portion, (2) is a pinion moving cylinder, (2a) is an inner portion, (2b) is a cylindrical portion, (2c) is a gear creation portion, and (3) is oil-impregnated. Bearing, (4) is bearing, (5)
Is a cover, (6) is a stopper, (7) is a ring, (8)
Is a clutch outer, (9) is a roller, (10) is an overrunning clutch, (11) is an eccentricity control ring, (1
2) is the front bracket. In the drawings, the same reference numerals indicate the same or corresponding parts.

フロントページの続き (56)参考文献 特開 昭51−92938（ＪＰ，Ａ) 特開 昭55−51952（ＪＰ，Ａ) 実開 昭60−23254（ＪＰ，Ｕ)Continuation of the front page (56) References JP-A-51-92938 (JP, A) JP-A-55-51952 (JP, A) Practical application Sho- 60-23254 (JP, U)

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項１】機関のリングギアと噛合う中空状のピニオ
ン移動筒が回転軸を貫挿しかつフロントブラケット内に
設けた軸受に沿って軸方向に移動するオーバーハングタ
イプの始動電動機において、前記ピニオン移動筒はオー
バーランニングクラッチを構成するインナー部と、前記
軸受内を摺動する円筒部と、前記リングギアと噛合う歯
車創設部とからなり、この歯車創設部の内径は前記イン
ナー部の内径あるいは前記円筒部の内径より小に形成さ
れ、かつ前記回転軸のヘリカルスプライン部と前記ピニ
オン移動筒の円筒部内部に装着された軸受が摺動する前
記回転軸の小径部との間に段付部を設け、前記回転軸の
小径部と前記歯車創設部内径との間に微小空隙を設け、
前記段付部上を前記オーバーランリングクラッチのアウ
ターに設けられた偏心規制リングが摺動するようにした
ことを特徴とする始動電動機。1. An overhang type starter motor in which a hollow pinion moving cylinder that meshes with a ring gear of an engine penetrates a rotating shaft and moves axially along a bearing provided in a front bracket. The moving cylinder is composed of an inner part that constitutes an overrunning clutch, a cylindrical part that slides in the bearing, and a gear creation part that meshes with the ring gear, and the inner diameter of the gear creation part is the inner diameter of the inner part or A stepped portion formed smaller than the inner diameter of the cylindrical portion and between the helical spline portion of the rotating shaft and the small diameter portion of the rotating shaft on which the bearing mounted inside the cylindrical portion of the pinion moving cylinder slides. Is provided, and a minute gap is provided between the small diameter portion of the rotary shaft and the inner diameter of the gear creation portion,
An eccentricity restricting ring provided on an outer portion of the overrun ring clutch slides on the stepped portion.
JP1987133386U 1987-08-31 1987-08-31 Starter motor Expired - Lifetime JPH07705Y2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP1987133386U JPH07705Y2 (en) 1987-08-31 1987-08-31 Starter motor
EP88114190A EP0306815B1 (en) 1987-08-31 1988-08-31 Starting electric motor
US07/238,432 US4899603A (en) 1987-08-31 1988-08-31 Starting electric motor
DE8888114190T DE3876727T2 (en) 1987-08-31 1988-08-31 ELECTRIC STARTER ENGINE.
KR2019880014321U KR920000383Y1 (en) 1987-08-31 1988-08-31 Start motor
HK97102441A HK1000868A1 (en) 1987-08-31 1997-12-16 Starting electric motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987133386U JPH07705Y2 (en) 1987-08-31 1987-08-31 Starter motor

Publications (2)

Publication Number Publication Date
JPS6436661U JPS6436661U (en) 1989-03-06
JPH07705Y2 true JPH07705Y2 (en) 1995-01-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987133386U Expired - Lifetime JPH07705Y2 (en) 1987-08-31 1987-08-31 Starter motor

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Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2460114A1 (en) * 1974-12-19 1976-06-24 Bosch Gmbh Robert Engine starter with sliding pinion - has tooth coupling on pinion sleeve, one half on long-pitch screw, the other with pin/slot connection
JPS5551952A (en) * 1978-10-06 1980-04-16 Hitachi Ltd Engine starter
JPS6023254U (en) * 1983-07-25 1985-02-18 三菱電機株式会社 Starter pinion transfer device

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Publication number Publication date
JPS6436661U (en) 1989-03-06

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