JPS5922255Y2 - Internal combustion engine power transmission device - Google Patents
Internal combustion engine power transmission deviceInfo
- Publication number
- JPS5922255Y2 JPS5922255Y2 JP7637279U JP7637279U JPS5922255Y2 JP S5922255 Y2 JPS5922255 Y2 JP S5922255Y2 JP 7637279 U JP7637279 U JP 7637279U JP 7637279 U JP7637279 U JP 7637279U JP S5922255 Y2 JPS5922255 Y2 JP S5922255Y2
- Authority
- JP
- Japan
- Prior art keywords
- power transmission
- rubber
- diameter
- internal combustion
- combustion engine
- 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
Landscapes
- Gears, Cams (AREA)
- Pulleys (AREA)
Description
【考案の詳細な説明】
本考案は、内燃機関のクランク軸等の軸から冷却水ポン
プ又はオルターネータ等のエンジン補機、カム軸又はバ
ランス軸等に動力伝達するための装置に関するものであ
る。[Detailed Description of the Invention] The present invention relates to a device for transmitting power from a shaft such as a crankshaft of an internal combustion engine to an engine accessory such as a cooling water pump or an alternator, a camshaft, a balance shaft, or the like.
内燃機関のクランク軸にプーリ、歯車又は鎖車等の動力
伝達輪を嵌着し、該動力伝達輪からエンジン補機又はカ
ム軸等に嵌着され、その駆動用としてのプーリ、歯車又
は鎖車等の動力伝達輪に動力を伝達する場合、クランク
軸の振動が動力伝達輪に全体に伝播し、動力伝達輪の全
表面から騒音となって放射されることになり、また、ク
ランク軸の振動数と動力伝達輪の固有振動数とが一致し
たとき共振し、クランク軸の振動が増大するばかりか、
動力伝達輪の表面から放射される騒音も増大することに
なる。A power transmission wheel such as a pulley, gear, or chain wheel is fitted onto the crankshaft of an internal combustion engine, and the power transmission wheel is fitted onto an engine accessory or camshaft, etc., for driving the pulley, gear, or chain wheel. When transmitting power to a power transmission wheel such as a motor, the vibration of the crankshaft propagates to the entire power transmission wheel and is radiated as noise from the entire surface of the power transmission wheel. When the number matches the natural frequency of the power transmission wheel, resonance occurs, which not only increases the vibration of the crankshaft, but also
The noise radiated from the surface of the power transmission wheel will also increase.
そこで最近では、第６図及び第７図に示すようにプーリ
３′等の動力伝達輪を内径のボス体部４′との外径の環
状外周体部５′とに分割し、ボス体部４′の外周と外周
体部５′との間の環状隙間に、両者を各々加硫接着され
るリング状のゴム体部７′を設けて一体的に接合するこ
とにより、クランク軸の振動が外周体部５′まで伝播し
ないようにすると共に、クランク軸の振動をゴム体７′
のダンパー作用で吸収緩和することが行なわれている。Therefore, recently, as shown in FIGS. 6 and 7, a power transmission wheel such as a pulley 3' is divided into a boss body part 4' on the inside diameter and an annular outer peripheral body part 5' on the outside diameter. By providing a ring-shaped rubber body part 7' that is vulcanized and bonded to each other in the annular gap between the outer periphery of 4' and the outer peripheral body part 5' and joining them together, vibrations of the crankshaft can be suppressed. In addition to preventing the vibrations of the crankshaft from propagating to the outer circumferential body portion 5', the vibrations of the crankshaft are
The damper action is used to alleviate the absorption.
この場合、プーリの表面からの騒音の放射を小さくする
には、前記ゴム体７′は出来る丈中心寄り、つまりその
直径り。In this case, in order to reduce noise radiation from the pulley surface, the rubber body 7' should be placed closer to the center of its length, that is, closer to its diameter.
を小さくすべきであるが、斯くすることは外周体部５′
の回転質量が大きくなるのでゴム体７′のダンパー作用
による振動の吸収緩和が低減するばかりか、ボス体部４
′と外周体部５′との間のゴム体７′の接着面積が極端
に少なくなるので、所定の動力伝達のための接着面積を
確保するには、当該ゴム体７′の幅Ｂを増大しなければ
ならずプーリが大型になり、しかも、外周体部５′の横
振れが増大するのであり、また、ゴム体７′の直径り。should be made smaller, but doing so means that the outer circumferential body portion 5'
Since the rotational mass of the boss body 4 increases, not only the vibration absorption and relaxation due to the damper action of the rubber body 7' is reduced, but also the boss body 4
Since the adhesion area of the rubber body 7' between ' and the outer peripheral body part 5' becomes extremely small, in order to secure the adhesion area for the specified power transmission, the width B of the rubber body 7' must be increased. This results in an increase in the size of the pulley, an increase in the lateral vibration of the outer circumferential body portion 5', and an increase in the diameter of the rubber body 7'.
を大きくすることは、ゴム体による振動の吸収の確保及
び外周体部の横振れを防止できる反面、ボス体部４′の
表面積が大きくなり、その表面からの騒音の放射が増大
するのであった。Increasing the size can ensure vibration absorption by the rubber body and prevent lateral vibration of the outer circumferential body, but on the other hand, the surface area of the boss body 4' increases, and noise radiation from the surface increases. .
本考案は、クランク軸、カム軸、バランス軸等の軸に嵌
着されたプーリ等の動力伝達輪におけるボス体部と外周
体部とをその間の環状隙間に設けたゴム又は軟質合成樹
脂等の弾性体で一体形接合するに当り、ゴム等の弾性体
を、その直径が動力伝達輪の一側面から他側面に向って
階段状に大きく又は小さくなる階段状の異径断面に形成
することにより、ボス体部の表面積、動力伝達輪の幅及
び外周体部の回転質量を増大することなく、ゴム又は軟
質合成樹脂等の弾性体における接着面積の増大を図り、
耐久性を向上すると共に外周体部の横振れを防止するも
のである。The present invention utilizes rubber or soft synthetic resin, etc., provided in the annular gap between the boss body and the outer peripheral body of a power transmission wheel such as a pulley fitted to a shaft such as a crankshaft, camshaft, or balance shaft. When integrally joining an elastic body, by forming the elastic body such as rubber into a step-like cross-section with different diameters, the diameter of which increases or decreases in a step-like manner from one side of the power transmission wheel to the other side. , aiming to increase the adhesion area on an elastic body such as rubber or soft synthetic resin without increasing the surface area of the boss body, the width of the power transmission wheel, and the rotational mass of the outer peripheral body,
This not only improves durability but also prevents the outer circumferential body from wobbling laterally.
次に本考案の一例を図面について説明するに、図におい
て１は機関本体、２は該機関本体１に一端が機関の側面
から突出するように設けたクランク軸を示し、該クラン
ク軸２の突出端には機関の冷却水ポンプ等（図示せず）
に動力伝達するためのプーリ３が嵌まっている。Next, an example of the present invention will be explained with reference to the drawings. In the drawings, 1 indicates an engine body, and 2 indicates a crankshaft provided in the engine body 1 with one end protruding from the side of the engine. At the end is the engine cooling water pump, etc. (not shown)
A pulley 3 for transmitting power is fitted.
このプーリ３は、クランク軸２の突出端に嵌まるボス体
部４と、外周面に■溝６を備えた環状の外周体部５とで
構成し、該ボス体部４と外周体部５とを、その間の環状
隙間内に両者に例えば一手段として各々加硫接着される
リング状のゴム等の弾性体７を設けて一体的に接合する
に当り、該ゴム等の弾性体７は、プーリ３の一側面８と
他側面９との間にプーリ３の軸線と直角或いは略直角方
向に延びる少なくとも一つの平面部を備えて、プーリ３
の一側面８における直径Ｄ１が、プーリ３の他側面９に
おいて前記直径Ｄ１より小さい直径Ｄ２に階段状に小さ
くなるように、前記ゴム等の弾性体７を異径断面に形成
して成るものである。This pulley 3 is composed of a boss body 4 that fits into the protruding end of the crankshaft 2, and an annular outer body 5 having a groove 6 on the outer circumferential surface. In integrally joining them by providing an elastic body 7, such as a ring-shaped rubber, which is vulcanized and bonded to both as a means, in the annular gap between them, the elastic body 7, such as rubber, The pulley 3 is provided with at least one flat surface extending between one side 8 and the other side 9 of the pulley 3 in a direction perpendicular or substantially perpendicular to the axis of the pulley 3.
The elastic body 7 made of rubber or the like is formed to have a different diameter cross section so that the diameter D1 on one side 8 of the pulley 3 decreases stepwise to a diameter D2 smaller than the diameter D1 on the other side 9 of the pulley 3. be.
また、７Ｃは回り止め部である。この場合図面は、ゴム
等の弾性体７においてプーリ３の軸線と直角或いは略直
角方向に延びる平面部を大小２つの平面部７ａ、７ｂと
して、ゴム等の弾性体７を３階段の異径断面とした場合
を示す。Moreover, 7C is a rotation stopper part. In this case, the drawing shows two flat parts 7a and 7b, large and small, in the elastic body 7 made of rubber, which extends perpendicularly or approximately perpendicularly to the axis of the pulley 3, and the elastic body 7 made of rubber etc. is shown in three steps with different diameter cross-sections. The case is shown below.
また、第１図および第２図に示すようにゴム等の弾性体
７をプーリ３の一側面８から他側面９に向って直径が階
段状に小さくすることに代えて、第３図及び第４図に示
すようにプーリ３の一側面８において小さい直径Ｄ２と
したゴム等の弾性体７を、プーリ３の他側面９において
大きい直径Ｄ１に一つ又は二つの平面部７ ａ 、７
ｂによって階段状に大きくなる異径断面に形成しても良
く、更に、本考案はプーリに限らず、クランク軸２に嵌
着される歯車又は鎖車等の動力伝達輪及び／又はクラン
ク軸から動力伝達されるカム軸、バランス軸等に嵌着さ
れ、その駆動用としての歯車、鎖車等の動力伝達輪に適
用できることはいうまでもない。Furthermore, instead of making the diameter of the elastic body 7 such as rubber decrease stepwise from one side 8 of the pulley 3 toward the other side 9 as shown in FIGS. 1 and 2, As shown in FIG. 4, an elastic body 7 made of rubber or the like with a small diameter D2 is formed on one side 8 of the pulley 3, and one or two flat parts 7a, 7 are formed on the other side 9 of the pulley 3 with a large diameter D1.
Furthermore, the present invention is not limited to pulleys, but can also be applied to power transmission wheels such as gears or chain wheels fitted to the crankshaft 2 and/or from the crankshaft. Needless to say, the present invention can be applied to power transmission wheels such as gears and chain wheels that are fitted onto camshafts, balance shafts, etc. that transmit power, and are used for driving the same.
この場合、クランク軸上の動力伝達輪とカム軸等の動力
伝達輪の両方に本考案を適用することはコスト上等の難
点があり、両動力伝達輪のいずれか一方に本考案を適用
することが好ましいが、なかんずくクランク軸上の動力
伝達輪のように主動側の動力伝達輪に本考案を適用する
のが好ましい。In this case, applying the present invention to both the power transmitting wheel on the crankshaft and the power transmitting wheel such as the camshaft has disadvantages such as cost, so it is difficult to apply the present invention to either one of the two power transmitting wheels. However, it is particularly preferable to apply the present invention to a power transmission wheel on the driving side, such as a power transmission wheel on a crankshaft.
また、ゴム等の弾性体７は第２図及び第４図に示すよう
に円形リング状に限らず、第５図に示すように周方向に
凹凸を有するジグザグ又は波形に形成しても良いのであ
る。Furthermore, the elastic body 7 such as rubber is not limited to a circular ring shape as shown in FIGS. 2 and 4, but may also be formed in a zigzag or wave shape having irregularities in the circumferential direction as shown in FIG. be.
このように、動力伝達輪のボス体部と外周体部とを一体
的に接合するリング状ゴム等の弾性体を、動力伝達輪の
一側面から他側面に向って直径が階段的に大きく又は小
さくなる異径断面に形成したことにより、当該ゴム等の
弾性体における接着面積は、前記図の形状の場合におい
て、ゴム等の弾性体を大きい直径Ｄ１の同径断面にした
ときより１．３倍、ゴム等の弾性体を小さい直径Ｄ２の
同径断面にしたときより１．７６倍、更には一側面８に
おける直径Ｄ１と他側面９における直径Ｄ２との間を直
線で結んでゴム等の弾性体をテーパー状に形成したとき
よりも１．３４倍も増大できるのである。In this way, the elastic body such as a ring-shaped rubber that integrally joins the boss body and the outer circumferential body of the power transmission wheel is made such that the diameter increases stepwise from one side of the power transmission wheel to the other side. By forming the cross section with a smaller diameter, the adhesion area of the elastic body such as rubber is 1.3 times larger than when the elastic body such as rubber is formed into a cross section with the same diameter and a larger diameter D1 in the case of the shape shown in the figure above. 1.76 times larger than when an elastic body such as rubber is made to have the same diameter cross section with a smaller diameter D2. This can be increased by 1.34 times compared to when the elastic body is formed into a tapered shape.
従って本考案によれば、動力伝達輪の幅を大きくするこ
となく、ゴム等の弾性体との接着面積を増大することが
できるから、動力伝達輪の小型化を図ることができると
共に、動力の伝達に際してゴム等の弾性体に対して単位
面積当りに作用する力は小さくなりゴム等の弾性体の耐
久性を向上できるばかりか、外周体部の横振れを確実に
防止できるのである。Therefore, according to the present invention, it is possible to increase the adhesion area with an elastic body such as rubber without increasing the width of the power transmission wheel. During transmission, the force acting per unit area on the elastic body such as rubber is reduced, which not only improves the durability of the elastic body such as rubber, but also reliably prevents the outer peripheral body from lateral vibration.
また、ゴム等の弾性体を動力伝達輪の一側面と他側面と
において異形断面に形成したことにより、軸に嵌着され
るボス体部の表面積は、ゴム等の弾性体を大きい直径Ｄ
１の同径断面としたときよりも、動力伝達輪のいずれか
一方の側面において小さい直径にした分だけ小さくなる
から、当該ボス体部から放射される騒音を低減できるの
であり、特に、第３図に示すように、機関本体とは反対
側の一側面８においてゴム等の弾性体を小さい直径Ｄ２
にした場合には、他側面９において大きい直径Ｄ１のボ
ス体部から放射される騒音は機関本体に向うことになる
から、ボス体部から放射される騒音をより低減できるの
である。In addition, by forming the elastic body such as rubber into an irregular cross section on one side and the other side of the power transmission wheel, the surface area of the boss body fitted to the shaft is
Since the diameter is made smaller on either side of the power transmission wheel than when the cross section is the same diameter as in No. 1, the noise radiated from the boss body can be reduced. As shown in the figure, an elastic body such as rubber is attached to a small diameter D2 on one side 8 opposite to the engine body.
In this case, the noise radiated from the boss body portion having the large diameter D1 on the other side face 9 is directed toward the engine body, so that the noise radiated from the boss body portion can be further reduced.
これに加えて、動力伝達輪における回転質量は、ボス体
部の表面積を小さくするためにボッ等の弾性体を小さい
直径Ｄ２の同径断面とした場合よりも、動力伝達輪のい
ずれか一方の側面において大きい直径Ｄ１にした分だけ
小さくなって、軸の振動を確実に吸収緩和できるのであ
る。In addition, the rotational mass of the power transmission wheels is larger than that of one of the power transmission wheels than when an elastic body such as a boss is made of the same diameter cross section with a small diameter D2 in order to reduce the surface area of the boss body. Since the diameter D1 is larger on the side surface, the diameter D1 becomes smaller, and vibrations of the shaft can be reliably absorbed and alleviated.
第１図は本考案の第１実施例の断面図、第２図は第１図
のＩＩ−■■視断面図、第３図は本考案の第２実施例の
断面図、第４図は第３図のＩＶ−ＩＶ視断面図、第５図
は第２図及び第４図の変形例を示す図、第６図は従来に
おける断面図、第７図は第５図のＶｌｌ−ＶＩＩ視断面
断面図る。
１・・・・・・機関本体、２・・・・・・クランク軸、
３・・・・・・プーリ、４・・・・・・ボス体部、５・
・・・・・外周体部、７・・・・・・ゴム等の弾性体、
８・・・・・・一側面、９・・・・・・他側面、７ ａ
、７ ｂ・・・・・・平面部。Fig. 1 is a sectional view of the first embodiment of the present invention, Fig. 2 is a sectional view taken along the line II-■■ of Fig. 1, Fig. 3 is a sectional view of the second embodiment of the invention, and Fig. 4 is a sectional view of the second embodiment of the invention. FIG. 3 is a sectional view taken along IV-IV in FIG. 3, FIG. 5 is a view showing a modification of FIGS. Cross-sectional diagram. 1... Engine body, 2... Crankshaft,
3...Pulley, 4...Boss body, 5...
...Outer body part, 7...Elastic body such as rubber,
8... One side, 9... Other side, 7 a
, 7 b... Flat part.
Claims (1)
するボス体部と、その外側の外周体部とで構成し、該ボ
ス体部と外周体部とをその間の隙間内に設けたゴム等の
弾性体にて一体的に接合し、該ゴム等の弾性体を、その
直径が動力伝達輪の一側面から他側面に向い動力伝達輪
の軸線と直角或いは略直角方向に延びる少なくとも一つ
の平面部によって階段状に大きく又は小さくなる異径断
面に形成して成る内燃機関の動力伝達装置。A power transmission wheel fitted to a shaft of an internal combustion engine is composed of a boss body part fitted to the shaft and an outer circumferential body part on the outside thereof, and the boss body part and the outer circumferential body part are connected in a gap therebetween. are integrally joined by an elastic body such as rubber provided in A power transmission device for an internal combustion engine, which is formed to have a different diameter cross section that becomes larger or smaller in a stepped manner by at least one extending flat portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7637279U JPS5922255Y2 (en) | 1979-06-04 | 1979-06-04 | Internal combustion engine power transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7637279U JPS5922255Y2 (en) | 1979-06-04 | 1979-06-04 | Internal combustion engine power transmission device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55176445U JPS55176445U (en) | 1980-12-18 |
| JPS5922255Y2 true JPS5922255Y2 (en) | 1984-07-03 |
Family
ID=29309873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7637279U Expired JPS5922255Y2 (en) | 1979-06-04 | 1979-06-04 | Internal combustion engine power transmission device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5922255Y2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5812755U (en) * | 1981-07-20 | 1983-01-26 | アスモ株式会社 | Torque buffer device |
| JPS59144256U (en) * | 1983-03-17 | 1984-09-27 | トヨタ自動車株式会社 | damper pulley |
| JPH0247802Y2 (en) * | 1985-11-11 | 1990-12-14 | ||
| JPH054594Y2 (en) * | 1987-04-28 | 1993-02-04 | ||
| JPH054595Y2 (en) * | 1987-04-30 | 1993-02-04 |
-
1979
- 1979-06-04 JP JP7637279U patent/JPS5922255Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55176445U (en) | 1980-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6283076B1 (en) | Torsionally compliant sprocket for engine balance shaft drive and method of manufacture | |
| US6192851B1 (en) | Vibration reducing system for internal combustion engine | |
| JP2004530081A (en) | Double ring damper | |
| JP6490479B2 (en) | Alternator damper pulley for vehicles | |
| JPS5922255Y2 (en) | Internal combustion engine power transmission device | |
| US11015696B2 (en) | Damper pulley for crankshaft | |
| US5453056A (en) | Belt pulley | |
| JP3582536B2 (en) | Torque fluctuation absorption damper | |
| JP3426478B2 (en) | Engine fan mounting structure | |
| JPS63214566A (en) | Sprocket | |
| JPH0470499B2 (en) | ||
| JP5741807B2 (en) | Pulley | |
| JPH0310432Y2 (en) | ||
| JP2000088054A (en) | Transmissive rotor fitted with damper | |
| JPS637734Y2 (en) | ||
| JPH0118923Y2 (en) | ||
| KR101939391B1 (en) | Damper pulley of heterogeneous material | |
| JP3682783B2 (en) | Coupling | |
| JP4032228B2 (en) | Torque fluctuation absorbing damper | |
| JPH0232904Y2 (en) | ||
| JPH07310787A (en) | Torsional damper | |
| JPS628676Y2 (en) | ||
| JPH11325186A (en) | Vibration reducing device of internal combustion engine | |
| JPH09287634A (en) | Coupling | |
| JPS60113843A (en) | Power transmitting gear belt |