JPH024277Y2 - - Google Patents
Info
- Publication number
- JPH024277Y2 JPH024277Y2 JP1983037483U JP3748383U JPH024277Y2 JP H024277 Y2 JPH024277 Y2 JP H024277Y2 JP 1983037483 U JP1983037483 U JP 1983037483U JP 3748383 U JP3748383 U JP 3748383U JP H024277 Y2 JPH024277 Y2 JP H024277Y2
- Authority
- JP
- Japan
- Prior art keywords
- outer ring
- hub
- recess
- damper
- protrusion
- 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
Links
- 239000013013 elastic material Substances 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
Landscapes
- Pulleys (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は内燃機関のクランク軸の回転変動を吸
収するのに使用されるダンパプーリに関する。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a damper pulley used to absorb rotational fluctuations of a crankshaft of an internal combustion engine.
従来技術
内燃機関のクランク軸のねじり振動を吸収する
ため、クランク軸上のプーリをハブと外輪とで２
分割にし、ハブと外輪との間にゴム等の弾性体を
環状に配置したものが知られている。外輪の質量
と弾性体のねじり弾性係数とでトーシヨナルダン
パが構成され、クランク軸の回転変動を抑制する
ことができる。Prior art In order to absorb torsional vibration of the crankshaft of an internal combustion engine, a pulley on the crankshaft is divided into two parts: a hub and an outer ring.
It is known that the wheel is divided into parts and an elastic body such as rubber is arranged annularly between the hub and the outer ring. The mass of the outer ring and the torsional elastic coefficient of the elastic body constitute a torsional damper, which can suppress rotational fluctuations of the crankshaft.
かかるトーシヨナルダンパでは弾性体であるゴ
ムはハブと外輪との間に圧縮して圧入される。し
かし圧入だけでは使用条件が非常に厳しい場合外
輪がハブからエンジンの前後方向に及び回転方向
に滑る可能性がある。この前後方向の滑りを防止
するため実開昭54−164387号公報のトーシヨナル
ダンパでは外輪より弾性体を越えてハブのところ
まで延びるストツパを設けている。そのためプー
リの前方への滑りは防止できるが、回転方向の滑
りは防止できない。かかる回転方向の滑りによつ
て外輪に打刻した噴射タイミング調整マークある
いは点火時期調整マークの位置にずれがでて調整
が不能になる問題がある。かかる回転方向への滑
りを防止するものとして本出願人は、外輪の内周
に凹所を設け、ハブの外周に凹所のところまで延
びる突起を設けたものを提案している。即ち、凹
所は突起より十分大きい円周方向寸法を有し、常
時は突起は凹所の中心に在り、ダンパ作動時のハ
ブと外輪との相対回転を許容する。回転方向の滑
りは、突起と凹所とが係合することによつて防止
できる。しかしながら、一旦突と凹所との係合が
生ずると、外輪とハブとの自由な相対回転ができ
なくなるためトーシヨナルダンパとしては働かな
くなる。 In such a torsional damper, rubber, which is an elastic body, is compressed and press-fitted between the hub and the outer ring. However, if only press-fitting is used, there is a possibility that the outer ring may slip from the hub in the longitudinal direction of the engine and in the rotational direction if the usage conditions are very severe. In order to prevent this slippage in the longitudinal direction, the torsional damper disclosed in Japanese Utility Model Application Publication No. 54-164387 is provided with a stopper extending from the outer ring past the elastic body to the hub. Therefore, although it is possible to prevent the pulley from slipping forward, it cannot prevent slipping in the direction of rotation. Such slippage in the rotational direction causes a problem in that the position of the injection timing adjustment mark or ignition timing adjustment mark engraved on the outer ring becomes misaligned, making adjustment impossible. In order to prevent such slippage in the rotational direction, the present applicant has proposed a system in which a recess is provided on the inner periphery of the outer ring, and a protrusion is provided on the outer periphery of the hub that extends to the recess. That is, the recess has a circumferential dimension that is sufficiently larger than the projection, and the projection is normally located at the center of the recess, allowing relative rotation between the hub and the outer ring when the damper is operated. Slippage in the rotational direction can be prevented by engagement between the protrusion and the recess. However, once the engagement between the protrusion and the recess occurs, free relative rotation between the outer ring and the hub is no longer possible, and the outer ring no longer functions as a torsional damper.
考案の開示
本考案の目的は回転方向の滑りを完全に防止し
た上でトーシヨナルダンパとしての機能も何ら損
われないようにする改良を提供することにある。
この目的達成のため本考案にあつては、回転方向
における凹所と突起との対向面間にゴム等の弾性
材より成るストツパを設けている。DISCLOSURE OF THE INVENTION An object of the present invention is to provide an improvement that completely prevents slippage in the rotational direction and also does not impair its function as a torsional damper.
In order to achieve this objective, in the present invention, a stopper made of an elastic material such as rubber is provided between the facing surfaces of the recess and the projection in the direction of rotation.
実施例
本考案のプーリは第１図、第２図に示すよう
に、ハブ１０と、外輪１２とを備え、ハブの外周
と外輪１２との内周との間にゴム等より成る環状
弾性体１４が圧入により装着されている。ハブ１
０は中心孔１０１を有し、図示しないクランク軸
に挿入される。外輪１２にはＶ溝１２１が形成さ
れ、ベルトを介して補機類へ連結される。外輪１
２１のクランク軸方向前後における直径対立位置
に突起１８がねじ２０によつて固設される。一方
ハブ１０の外周の前後面に凹所２２が直径対立す
るように形成され、突起１８はこの凹所２２のと
ころまで延びている。凹所２２の円周方向の寸法
Ｘは突起１８のそれより十分大きくなつており、
外輪１２の、ハブ１０に対するある程度の相対回
転を可能とし、これによりトーシヨナルダンパと
しての機能を確保している。図では突起１８と凹
所２２とは前後に２組設けているが、これは限定
的でない。また突起１８をハブ１０に、凹所２２
を外輪１２に設けることも任意である。Embodiment As shown in FIGS. 1 and 2, the pulley of the present invention includes a hub 10 and an outer ring 12, and an annular elastic body made of rubber or the like between the outer periphery of the hub and the inner periphery of the outer ring 12. 14 is attached by press fitting. hub 1
0 has a center hole 101 and is inserted into a crankshaft (not shown). A V-groove 121 is formed in the outer ring 12, and the outer ring 12 is connected to auxiliary equipment via a belt. Outer ring 1
The protrusions 18 are fixed by screws 20 at diametrically opposed positions in the front and rear of the crankshaft direction of the protrusions 21 . On the other hand, recesses 22 are formed on the front and rear surfaces of the outer periphery of the hub 10 so as to be diametrically opposed, and the protrusion 18 extends to the recesses 22. The circumferential dimension X of the recess 22 is sufficiently larger than that of the protrusion 18,
This allows the outer ring 12 to rotate relative to the hub 10 to a certain extent, thereby ensuring its function as a torsional damper. In the figure, two sets of protrusions 18 and recesses 22 are provided at the front and rear, but this is not limiting. Also, the protrusion 18 is attached to the hub 10, and the recess 22 is attached to the hub 10.
It is also optional to provide this on the outer ring 12.
本考案によれば、凹所２２内における突起１８
の廻りにはゴム等の弾性材より成るストツパ２６
が充填されている。このストツパ２６は、トーシ
ヨナルダンパ作動時の、外輪１２の、ハブ１０に
対する相対回転は許容するが、弾性体１４の滑り
に対してはこれを防止する役目を持つ。ストツパ
２６は実施例では、突起の前面、回転方向の両
側、底面を包囲するよう設けられているが、本質
的には、回転方向における突起１８と凹所２２と
の対向面のところ、即ち図のP1，P2のところに
設ければ機能は発揮できる。 According to the invention, the protrusion 18 in the recess 22
There is a stopper 26 made of elastic material such as rubber around the
is filled. This stopper 26 allows the outer ring 12 to rotate relative to the hub 10 when the torsional damper is activated, but has the role of preventing the elastic body 14 from slipping. In the embodiment, the stopper 26 is provided so as to surround the front surface, both sides in the rotational direction, and the bottom surface of the projection, but essentially, the stopper 26 is provided at the surface facing the projection 18 and the recess 22 in the rotational direction, that is, in the figure. If it is installed at P 1 and P 2 of , the function can be achieved.
以上述べたダンパプーリの作動時、外輪１２の
重量と、弾性体１４のねじり弾性係数とでトーシ
ヨナルダンパが構成され、クランク軸のねじり振
動が吸収される。このダンパ作動時、外輪１２は
ハブ１０に対し円周方向に相対回転するが、この
際ストツパ２６は点P1又はP2のところで円周方
向に弾性変形しそのような相対回転、即ちダンパ
機能を保障する。弾性体のすべりに対しては、点
P1，又はP2のところでこれを押返するよな力が
発揮され、突起１８を常に凹所２２の中央に位置
させ、クランク軸のねじり振動による外輪１２の
ハブ１０に対する円周方向の相対回転を常に可能
とする。 When the damper pulley described above operates, the weight of the outer ring 12 and the torsional elastic coefficient of the elastic body 14 constitute a torsional damper, and torsional vibration of the crankshaft is absorbed. When this damper operates, the outer ring 12 rotates relative to the hub 10 in the circumferential direction, but at this time, the stopper 26 is elastically deformed in the circumferential direction at point P 1 or P 2 to prevent such relative rotation, that is, the damper function. guarantee. For the slip of an elastic body, the point
A force pushing back is exerted at P 1 or P 2 , keeping the protrusion 18 always located at the center of the recess 22 , and causing the outer ring 12 to shift relative to the hub 10 in the circumferential direction due to torsional vibration of the crankshaft. Rotation is always possible.
考案の効果
本考案によれば突起１８と凹所２２との間にお
いて円周方向対向面間に弾性ストツパ２６を設け
ることで、ねじり振動吸収時の外輪１２とハブ１
０との相対回転は許容しつつ、弾性体１４の回転
ずれを防止することができ、ダンパ機能の確保、
ダンパ破損の防止、更には噴射タイミング調整用
のマク位置ずれを防止することができる。Effects of the invention According to the invention, by providing an elastic stopper 26 between the circumferentially opposing surfaces between the protrusion 18 and the recess 22, the outer ring 12 and the hub 1 can be used when torsional vibration is absorbed.
While allowing relative rotation with respect to 0, it is possible to prevent rotational deviation of the elastic body 14, ensuring the damper function,
Damage to the damper can be prevented, and furthermore, misalignment of the position of the mask for adjusting the injection timing can be prevented.
しかも上記の効果は、ハブ又は外輪とは別体の
突起、ハブと外輪との間に介在する弾性体とは別
体の弾性ストツパとを用意することによつて容易
に達成されるもとなり、ダンパプーリのコストア
ツプを回避することができる。 Moreover, the above effects can be easily achieved by providing a protrusion separate from the hub or outer ring, and an elastic stopper separate from the elastic body interposed between the hub and the outer ring. It is possible to avoid an increase in the cost of damper pulleys.
第１図は本考案のダンパプーリの正面図、第２
図は第１図の−線に沿う断面図。
１０……ハブ、１２……外輪、１４……弾性体
層、１８……突起、２２……凹所、２６……スト
ツパ。
Figure 1 is a front view of the damper pulley of the present invention, Figure 2 is a front view of the damper pulley of the present invention.
The figure is a sectional view taken along the - line in FIG. 1. DESCRIPTION OF SYMBOLS 10... Hub, 12... Outer ring, 14... Elastic layer, 18... Protrusion, 22... Recess, 26... Stopper.
Claims (1)
るダンパプーリにおいて、前記バブ又は外輪の一
方に少くとも一個の凹所を形成し、ハブ又は外輪
の他方に前記凹所まで延びる前記ハブ又は外輪と
は別体の突起を取付け、回転方向における前記凹
所と突起との対向面間に前記環状弾性体とは別体
の弾性材より成るストツパを設けたことを特徴と
するダンパプーリ。 In a damper pulley comprising an annular elastic body disposed between a hub and an outer ring, at least one recess is formed in one of the hub or the outer ring, and the hub or the outer ring extends to the recess in the other of the hub or the outer ring. A damper pulley, characterized in that a protrusion separate from the outer ring is attached, and a stopper made of an elastic material separate from the annular elastic body is provided between opposing surfaces of the recess and the protrusion in the rotational direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3748383U JPS59144256U (en) | 1983-03-17 | 1983-03-17 | damper pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3748383U JPS59144256U (en) | 1983-03-17 | 1983-03-17 | damper pulley |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59144256U JPS59144256U (en) | 1984-09-27 |
| JPH024277Y2 true JPH024277Y2 (en) | 1990-01-31 |
Family
ID=30168169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3748383U Granted JPS59144256U (en) | 1983-03-17 | 1983-03-17 | damper pulley |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59144256U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4534554B2 (en) * | 2004-03-30 | 2010-09-01 | 株式会社ジェイテクト | Power transmission device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5637154Y2 (en) * | 1978-05-10 | 1981-09-01 | ||
| JPS5922255Y2 (en) * | 1979-06-04 | 1984-07-03 | ダイハツ工業株式会社 | Internal combustion engine power transmission device |
-
1983
- 1983-03-17 JP JP3748383U patent/JPS59144256U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59144256U (en) | 1984-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5052244A (en) | Torque variation absorbing device | |
| JPS6134021B2 (en) | ||
| JPS6027745Y2 (en) | Engine movement prevention device for motorcycles | |
| JPH024277Y2 (en) | ||
| US4913275A (en) | Clutch disk apparatus | |
| JPH08145147A (en) | Rotor such as gear, pulley | |
| JPS5922255Y2 (en) | Internal combustion engine power transmission device | |
| US1635855A (en) | Internal-combustion engine | |
| JPS646408Y2 (en) | ||
| JPH01309822A (en) | Propeller shaft | |
| JP3543852B2 (en) | damper | |
| US4036075A (en) | Variable speed power transmission including means for minimizing backlash | |
| JP3719289B2 (en) | Torque fluctuation absorbing damper | |
| JP3682783B2 (en) | Coupling | |
| JPH026285Y2 (en) | ||
| JPH0747618Y2 (en) | Elastic coupling | |
| JPH059554Y2 (en) | ||
| JP2568591Y2 (en) | Vibration and noise suppression device for fuel injection pump | |
| JPH083714Y2 (en) | Coupling | |
| JPH0134742Y2 (en) | ||
| JPS6344581Y2 (en) | ||
| JPH0637233Y2 (en) | Engine overrun prevention device | |
| JPS6221776Y2 (en) | ||
| JPH1089414A (en) | Damper | |
| JPH0228293Y2 (en) |