JPS629034A - One-way clutch - Google Patents
One-way clutchInfo
- Publication number
- JPS629034A JPS629034A JP60146462A JP14646285A JPS629034A JP S629034 A JPS629034 A JP S629034A JP 60146462 A JP60146462 A JP 60146462A JP 14646285 A JP14646285 A JP 14646285A JP S629034 A JPS629034 A JP S629034A
- Authority
- JP
- Japan
- Prior art keywords
- spring member
- outer ring
- roller
- way clutch
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
- F16D41/064—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls
- F16D41/066—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は主として自動二輪車などの小型エンジンに使
用されるエンジン始動用の一方向クラッチとして最適な
一方向クラッチに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a one-way clutch that is most suitable as a one-way clutch for engine starting, which is mainly used in small engines such as motorcycles.
従来、この種の・一方向クラッチの構成は始動電動機に
連なる駆動軸の外方に外＠ｉを配し、外輪の軸孔にロー
ラを収容する複数個のポケットを形成し、ポケットの底
面に形成した楔面と駆動軸とをばね部材によって係合方
向へ押圧されるローラを介して係脱自在に構成したもの
であシ、既に周知慣用の技術となっている（例えば実公
昭３４−１８３１４号公報）。Conventionally, the configuration of this type of one-way clutch is to place the outer ring outside the drive shaft connected to the starter motor, form a plurality of pockets in the shaft hole of the outer ring to accommodate the rollers, and form a pocket on the bottom of the pocket. The formed wedge surface and the drive shaft are configured to be able to be freely engaged and disengaged via a roller that is pressed in the engagement direction by a spring member, and this is already a well-known and commonly used technology (for example, Japanese Utility Model Publication No. 34-18314). Publication No.).
然るに、従来のものはローラを押圧するばね部材はコイ
ルばねとローラに接する抑圧子からなシ、それらはポケ
ットの内壁に設けたドリル加工孔に収容されていｆｃが
、この加工は外輪を貫いて外輪の外方から行なわねばな
らず、機械加工が容易でないばか夛か、これにコイルば
ねを組み付ける作業も容易でなかった。However, in the conventional type, the spring member that presses the roller does not consist of a coil spring and a suppressor in contact with the roller, and these are housed in a drilled hole formed in the inner wall of the pocket. It had to be done from the outside of the outer ring, and machining was not easy, and the work of assembling the coil spring there was also not easy.
この発明は上記不具合を除去し、加工および組立を容易
にした一方向クラッチを得ることを目的としたものであ
り、駆動軸と外輪との間にローラを介して動力伝達を断
続可能に構成したものにおいて、前記外輪を鉄材とし、
軸孔を有する本体と、本体に形成されたローラを収容す
るポケット、およびポケット円へ突没するばね部材の取
付は孔を外輪の一側に開口させ、ポケット内にローラと
取付は孔内にばね部材とを収容し、その外面をローラが
軸方向へ移動するのを阻止する抜止め板によって覆って
構成した点に特徴がある。The purpose of this invention is to eliminate the above-mentioned problems and to obtain a one-way clutch that is easy to process and assemble, and is configured so that power transmission can be intermittent via a roller between the drive shaft and the outer ring. In the article, the outer ring is made of iron material,
A main body having a shaft hole, a pocket formed in the main body for accommodating a roller, and a spring member protruding into the pocket circle are installed by opening the hole on one side of the outer ring, and installing the roller in the pocket inside the hole. The spring member is featured in that the outer surface of the spring member is covered with a retaining plate that prevents the roller from moving in the axial direction.
以下、この発明を図示の実施例によって説明すると、図
中、１はエンジン始動用の一方向クラッチである。一方
向クラッチ１は従動軸であるクランク軸２に係止される
外輪３と、図示してない始動電動機に連結される駆動軸
４．ばね部材５に押圧されて、それらの間に係脱自在に
介装される鋼製のローラ６とからなっている。The present invention will be explained below with reference to the illustrated embodiment. In the figure, 1 is a one-way clutch for starting the engine. The one-way clutch 1 includes an outer ring 3 that is engaged with a crankshaft 2 that is a driven shaft, and a drive shaft 4 that is connected to a starter motor (not shown). It consists of a steel roller 6 which is pressed by a spring member 5 and is detachably interposed between them.
外輪３は鉄粉を主材料とし、焼結して環状に成形し、或
いは鉄材を冷間鍛造によって成形したもので、その軸孔
３ａには３個のポケット７が一体に形成されている。３
ｂは外輪３の一側から軸孔３ａ円へ伸びるストッパであ
シ、その内周にはスプライン孔３ｃが形成され、それに
よってクランク軸２に係止されている。なお、外輪３は
必ずしもこの実施例のように、スプライン孔を介して直
接にクランク軸へ連結される他、クランク軸に固定され
るエンジン発電機の回転子２８などに連結され１間接的
にクランク軸へ連結されることもある。。The outer ring 3 is mainly made of iron powder and is sintered and formed into an annular shape, or is formed by cold forging of iron material, and three pockets 7 are integrally formed in the shaft hole 3a. 3
A stopper b extends from one side of the outer ring 3 to the shaft hole 3a, and a spline hole 3c is formed on the inner periphery of the stopper, and the stopper b is engaged with the crankshaft 2. Note that the outer ring 3 is not necessarily connected directly to the crankshaft through a spline hole as in this embodiment, but may also be connected indirectly to the rotor 28 of an engine generator fixed to the crankshaft. It may also be connected to a shaft. .
ポケット７の底面には楔面７ａが形成されており、ばね
部材５に押されたローラ６が押し付けられている。７ｂ
は外輪３を軽量化するための肉抜き孔である。なお、外
輪３は必要に応じて浸炭焼入れその他、必要な燃処理を
施しであることはいうまでもない。A wedge surface 7a is formed on the bottom surface of the pocket 7, and a roller 6 pressed by a spring member 5 is pressed against the wedge surface 7a. 7b
is a lightening hole for reducing the weight of the outer ring 3. It goes without saying that the outer ring 3 may be subjected to carburizing and quenching or other necessary combustion treatments as necessary.
第３図、第５図で示すように、外輪３の一側には通孔３
ｄを通してポケット７に通じるばね部材５の取付孔３ｅ
が開口しておシ、その内面はけばね部材５を支持する係
止段部３ｆ、３ｆが設けられている。As shown in FIGS. 3 and 5, one side of the outer ring 3 has a through hole 3.
Attachment hole 3e of spring member 5 communicating with pocket 7 through d
is open, and its inner surface is provided with locking steps 3f, 3f for supporting the spring member 5.
ばね部材５は鋼板２合成樹脂等の弾性材料によって作ら
れており、略欠円形に丸められた本体５ａと、その−側
から分岐した押圧子５ｂとからなる。The spring member 5 is made of an elastic material such as a steel plate 2 synthetic resin, and consists of a main body 5a rounded into a substantially occluded circle and a presser 5b branching from the negative side thereof.
５Ｃ・５Ｃは本体５ａの両端を示す。ばね部材５を外輪
３へ取付けるには、本体５ａを押し締めた形で取付孔３
ｅ円へ挿入し、内部で屏放して両端５ｃ。5C and 5C indicate both ends of the main body 5a. To attach the spring member 5 to the outer ring 3, tighten the main body 5a and insert it into the attachment hole 3.
Insert it into circle e and release it inside to make both ends 5c.
５ｃが係止段部３ｆ、３ｆの間に自己の弾力で係止され
る。このとき、本体５ａから突設された押圧子５ｂがポ
ケットＴ円へ伸び、ローラ６を楔面７ａへ押付ける。な
お、この実施例において、押圧子５ｂは先端部を小円弧
状に巻回しであるが、これは発明の構成上必須の要件で
はない６゜８は外輪３のストッパ３ｂが存しない側を覆
うカバーであシ、ローラ６とばね部材５とを外輪３内に
保持するものである。カバー８はその外周に設けた係合
溝８ａによシ外輪３に設けた環状の突条３ｈに係止され
ている。5c is locked between the locking steps 3f, 3f by its own elasticity. At this time, the presser 5b protruding from the main body 5a extends to the pocket T circle and presses the roller 6 against the wedge surface 7a. In this embodiment, the tip of the presser 5b is wound in a small arc shape, but this is not an essential requirement for the structure of the invention.The 6°8 covers the side of the outer ring 3 where the stopper 3b is not present. The cover holds the roller 6 and the spring member 5 within the outer ring 3. The cover 8 is engaged with an annular protrusion 3h provided on the outer ring 3 through an engagement groove 8a provided on its outer periphery.
次にこの実施例の作動を説明する。まず、図示してない
始動電動機が回転すると、それに伴われて、駆動軸４が
第２図中、反時計方向へ回転する。Next, the operation of this embodiment will be explained. First, when a starter motor (not shown) rotates, the drive shaft 4 rotates counterclockwise in FIG. 2 accordingly.
ロー２６は駆動軸４との間の摩擦によシ強く楔面７ａに
押付けられ、外輪３を同方向へ回転させ。The row 26 is strongly pressed against the wedge surface 7a due to the friction between it and the drive shaft 4, causing the outer ring 3 to rotate in the same direction.
これに連なるクランク軸２をクランキングする。The crankshaft 2 connected to this is cranked.
エンジンが始動するとクランク軸２、換言すれば外輪３
が駆動軸４より高速となるので、摩擦力によシローラ６
がばね部材５の押圧力に抗して楔面７ａから離れるか、
係合力を作用させなくなるので、一方向クラッチ１の係
合が解け、クランク軸２が始動電動機を逆駆動すること
はない１゜〔発明の効果〕
この発明に係る一方向クラッチは、その外輪が鉄材を焼
結あるいは冷間鍛造して、外形と軸孔およびばね部材の
取付孔を軸方向に設けたので、鍛造や焼結など金型を使
用する成形に適するものとなシ、更には、ばね部材全外
輪に設けた取付孔へ容易に組付けることができる等の効
果がある。When the engine starts, the crankshaft 2, in other words, the outer wheel 3
is faster than the drive shaft 4, so the friction force causes the roller 6 to move faster than the drive shaft 4.
resists the pressing force of the spring member 5 and separates from the wedge surface 7a, or
Since the engaging force is no longer applied, the one-way clutch 1 is disengaged and the crankshaft 2 does not drive the starter motor in reverse. Since the iron material is sintered or cold forged and the outer shape, shaft hole, and spring member mounting hole are provided in the axial direction, it is suitable for forming using a mold such as forging and sintering. This has the advantage that the spring member can be easily assembled into the mounting hole provided in the entire outer ring.
図面はこの考案の一実施例を示すもので、第１図は一部
を破断した一方向クラッチの正面図、第２図はその■−
ｎ断面図、第３図はそのＩ−１断面図、第４図はＩＶ−
ＩＶ断面図、第５図は要部を拡大して示す拡大図である
。
３・・・・外輪、 ３ｅ・・・・取付孔、３ｆ・・・・
係止段部、５・・・・ばね部材、 ５ａ・・・・本体、
５ｂ・・・・押圧子、５ｃ、５ｅ・・・・両端、６・・
・・ローラ、７・・・・ポケット。
７ａ・・・・楔面、１The drawings show one embodiment of this invention; Fig. 1 is a partially cutaway front view of a one-way clutch, and Fig. 2 is a partially cutaway front view of the one-way clutch.
N sectional view, Fig. 3 is the I-1 sectional view, and Fig. 4 is the IV-
The IV sectional view and FIG. 5 are enlarged views showing important parts. 3...Outer ring, 3e...Mounting hole, 3f...
Locking step portion, 5...spring member, 5a...main body,
5b...presser, 5c, 5e...both ends, 6...
... Laura, 7... Pocket. 7a... Cuneate surface, 1
Claims (3)
を断続可能に構成したものにおいて、前記外輪を鉄材と
し、軸孔を有する本体と、本体に形成されたローラを収
容するポケット、およびポケット円へ突没するばね部材
の取付け孔を外輪の一側に開口させ、ポケット内にロー
ラと取付け孔内にばね部材とを収容し、その外面をロー
ラが軸方向へ移動するのを阻止する抜止め板によって覆
って構成した一方向クラッチ。(1) In a device configured to be able to intermittent power transmission between a drive shaft and an outer ring via a roller, the outer ring is made of iron, a main body having a shaft hole, and a pocket formed in the main body for accommodating the roller; and a mounting hole for a spring member that protrudes into the pocket circle is opened on one side of the outer ring, and the roller is accommodated in the pocket and the spring member is accommodated in the mounting hole to prevent the roller from moving in the axial direction on its outer surface. A one-way clutch that is covered with a retaining plate.
囲第１項記載の一方向クラッチ。(2) The one-way clutch according to claim 1, wherein the outer ring is formed of a sintered alloy.
特許請求の範囲第１項記載の一方向クラッチ。(3) The one-way clutch according to claim 1, wherein the outer ring is formed by cold forging a steel material.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60146462A JPS629034A (en) | 1985-07-05 | 1985-07-05 | One-way clutch |
| US06/845,547 US4735299A (en) | 1985-03-29 | 1986-03-28 | One-way clutch and improved spring therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60146462A JPS629034A (en) | 1985-07-05 | 1985-07-05 | One-way clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS629034A true JPS629034A (en) | 1987-01-17 |
Family
ID=15408182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60146462A Pending JPS629034A (en) | 1985-03-29 | 1985-07-05 | One-way clutch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS629034A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6543592B2 (en) * | 2000-02-14 | 2003-04-08 | Ntn Corporation | One-way clutch |
-
1985
- 1985-07-05 JP JP60146462A patent/JPS629034A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6543592B2 (en) * | 2000-02-14 | 2003-04-08 | Ntn Corporation | One-way clutch |
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