JPH0649909Y2 - Starter motor - Google Patents
Starter motorInfo
- Publication number
- JPH0649909Y2 JPH0649909Y2 JP13338587U JP13338587U JPH0649909Y2 JP H0649909 Y2 JPH0649909 Y2 JP H0649909Y2 JP 13338587 U JP13338587 U JP 13338587U JP 13338587 U JP13338587 U JP 13338587U JP H0649909 Y2 JPH0649909 Y2 JP H0649909Y2
- Authority
- JP
- Japan
- Prior art keywords
- rotary shaft
- moving cylinder
- bearing
- inner diameter
- pinion moving
- 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
Links
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
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
ロントブラケツト内に設けた軸受に沿つて軸方向に移動
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 field of application] The present invention relates to a starting motor for starting an engine, and in particular, a hollow pinion moving cylinder that meshes with a ring gear of the engine is mounted on a bearing provided in a front bracket. The present invention relates to an improvement of a pinion transfer structure of an overhang type starter motor that moves in the axial direction.
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
軸はヘリカル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 cross-sectional view showing a pinion transfer structure of a conventional starting motor disclosed in, for example, Japanese Utility Model Laid-Open No. 61-6679, in which (1) is an output rotary shaft, and this rotary shaft is It has a portion (1a) in which a helical spline is formed 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
グクラツチ（10）はピニオン移動筒（２）、クラツチア
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）はクラツチインナー部
（2a）、フロントブラケツト（11）に嵌着された軸受
（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）のストツパ構造を構成している。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。On the other hand, the overrunning clutch (10) which moves back and forth on this rotation axis 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 the front bracket (11), and an engine ring gear (20). It consists of meshing gear formations (2c). Further, (5) is a dustproof cover, and (6) and (7) constitute the stopper structure of the pinion moving cylinder (2). 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。図示しないマグネツトスイ
ツチに電圧が印加されるとプランジヤが吸引され、レバ
ーを介してオーバーランニングクラツチ（10）が前方に
移送され、オーバーランニングクラツチ（10）に組み込
まれたピニオンがリングギア（20）に噛合を始め、同時
にマグネツトスイツチの中の図示しない接点が当接し、
バツ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）の先端部がストツパ（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 attracted, the overrunning clutch (10) is transferred forward through the lever, and the pinion incorporated in the overrunning clutch (10) is moved to the ring gear (20). , And at the same time, the contacts (not shown) in the magnet switch come into contact,
Energization is started from the battery, the armature of the DC motor is activated, and the ring gear (20) of the engine is driven. Here, the tip of the pinion moving cylinder (2) comes into contact with the stopper (6) to complete the movement.
従来の始動電動機は以上のように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出力回転軸（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つた。さらに、ピニオン
の歯形及び歯数を小とし、歯車創設部（2c）の内部に出
力回転軸（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
がたつてその強度を弱めざるを得ないという問題点があ
つた。Since the conventional starter motor is configured as described above, the grease applied to the oil-impregnated bearing portion (3) can be converted into the output rotary shaft (1).
It is easy to escape to the front or rear of the bearing to shorten the life of the bearing portion (3). Furthermore, if the output shape of the pinion is small and the number of teeth is small and the output rotary shaft (1) penetrates inside 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.
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
いは回転軸強度の高い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 an object thereof is to obtain a starting motor having a long bearing life and high pinion tooth strength or rotary shaft strength.
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ピニオン移動筒
の円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、この段付部とピニオン移動筒のインナ−部内径との
間に微小空隙を構成するとともに前記回転軸の小径部と
前記歯車創設部内径との間にも微小空隙を設けたもので
ある。In the starting motor according to the present invention, the inner diameter of the gear creation portion of the pinion moving cylinder is smaller than the inner diameter of the inner portion or the inner diameter of the cylindrical portion of the pinion moving cylinder, and the helical spline portion of the rotating shaft and the small diameter portion of the rotating shaft are A stepped portion is provided between the stepped portion and the inner diameter of the inner portion of the pinion moving cylinder, and a minute gap is formed between the stepped portion and the inner diameter of the pinion moving cylinder. It has a void.
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
げにくい構造になつている。The pinion transfer structure in the present invention has a structure in which the oil impregnated in the bearing and the grease applied to the bearing are unlikely to escape to the front or the rear of the rotating shaft because the both ends of the bearing have minute gaps.
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。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 reduced, and the stepped portion is added to increase the diameter of the rotating shaft, so that there is a margin in strength.
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ツチ（10）のクラツ
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
のように構成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ことがで
きる。（Ａ）は前記回転軸（１）の強度上危険断面図を
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 the helical spline created in the clutch outer (8) of the overrunning clutch (10) is provided in the first half of this 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 (1a) And a small diameter portion (1c), 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. 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). A micro void can be formed in the. (A) shows a dangerous cross-sectional view due to the strength of the rotating shaft (1).
この様に構成された実施例のものにあつては、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）内径との径方向空隙並び
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
微小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小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 voids 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 the inner diameter of the inner part (2a) of the pinion moving cylinder (2), the outer diameter of the small diameter part (1c) of the rotating shaft (1) and the inner diameter of the gear creation part (2c) of the pinion moving cylinder (2) Since the radial gaps of and are made minute gaps, oil and grease impregnated in the oil-impregnated bearing (3) are unlikely to leak from the minute gaps,
For the most part, the small diameter part (1c) and cylindrical part (2b) of the rotating shaft (1)
The oil-impregnated bearing (3) because it is filled in the radial gap with
Lifespan 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。Further, the mounting position of the oil-impregnated bearing (3) is brought close 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) has a stepped portion (1b). ) And 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.
なお、上記実施例では、防じんあるいは防水カバー
（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。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）内を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。In the above embodiment, the dustproof or waterproof cover (5) is provided at the tip of the pinion moving barrel (2), but it is of course applicable to the one without the cover (5). Further, in the above description, the starter motor of the type in which the rotary shaft (1) is the armature rotary shaft has been exemplified, but the internal deceleration type in which the rotary shaft that penetrates the pinion moving cylinder (2) and the armature rotary shaft are different from each other It can also be applied to the starting electric motor.
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
軸受装着位置を危険断面部に近づけ、軸径を太くし得る
ことで危険断面部における曲げ応力を下げ、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 formed as minute gaps, the outflow of grease and the like can be reduced, and further, the bearing mounting position can be reduced. (EN) It is possible to provide a highly reliable starter motor by reducing the bending stress in the dangerous cross section by making the shaft diameter thicker so as to be closer to the dangerous cross section.
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−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−、（６）はストツパ、（７）はリング、（８）
はクラツチアウター、（９）はローラ、（10）はオーバ
ーランニングクラツチ、（11）はフロントブラケツトで
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) 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, and (11) is a front bracket. In the drawings, the same reference numerals indicate the same or corresponding parts.
Claims (1)
ン移動筒が、回転軸を貫挿しかつフロントブラケツト内
に設けた軸受に沿つ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ツ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嵌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、この回転軸
の段付部と前記ピニオン移動筒のインナー部内径との間
に微小空隙を構成するとともに前記回転軸の小径部と前
記歯車創設部内径との間にも微小空隙を設けたことを特
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 moves axially along a bearing that penetrates a rotary shaft and is provided in a front bracket. The pinion moving cylinder includes an inner portion that constitutes an overrunning clutch, a cylindrical portion that slides in the bearing, and a gear creation portion that meshes with the ring gear, and the inner diameter of the gear creation portion is the inner diameter of the inner portion. Alternatively, a step formed between the helical spline portion of the rotary shaft and the small diameter portion of the rotary shaft on which the bearing fitted inside the cylindrical portion of the pinion moving cylinder slides is formed to be smaller than the inner diameter of the cylindrical portion. A small gap is formed between the stepped portion of the rotary shaft and the inner diameter of the inner portion of the pinion moving cylinder, and the small diameter portion of the rotary shaft and the inner diameter of the gear creation portion are provided. Starter motor, characterized in that a small gap in between.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13338587U JPH0649909Y2 (en) | 1987-08-31 | 1987-08-31 | Starter motor |
| KR2019880014321U KR920000383Y1 (en) | 1987-08-31 | 1988-08-31 | Start motor |
| DE8888114190T DE3876727T2 (en) | 1987-08-31 | 1988-08-31 | ELECTRIC STARTER ENGINE. |
| US07/238,432 US4899603A (en) | 1987-08-31 | 1988-08-31 | Starting electric motor |
| EP88114190A EP0306815B1 (en) | 1987-08-31 | 1988-08-31 | Starting electric motor |
| HK97102441A HK1000868A1 (en) | 1987-08-31 | 1997-12-16 | Starting electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13338587U JPH0649909Y2 (en) | 1987-08-31 | 1987-08-31 | Starter motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6436660U JPS6436660U (en) | 1989-03-06 |
| JPH0649909Y2 true JPH0649909Y2 (en) | 1994-12-14 |
Family
ID=31391195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13338587U Expired - Lifetime JPH0649909Y2 (en) | 1987-08-31 | 1987-08-31 | Starter motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0649909Y2 (en) |
-
1987
- 1987-08-31 JP JP13338587U patent/JPH0649909Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6436660U (en) | 1989-03-06 |
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