JPS5827144Y2 - Cylindrical torsional damper - Google Patents
Cylindrical torsional damperInfo
- Publication number
- JPS5827144Y2 JPS5827144Y2 JP762779U JP762779U JPS5827144Y2 JP S5827144 Y2 JPS5827144 Y2 JP S5827144Y2 JP 762779 U JP762779 U JP 762779U JP 762779 U JP762779 U JP 762779U JP S5827144 Y2 JPS5827144 Y2 JP S5827144Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical member
- cylindrical
- circumferential surface
- torsional damper
- rubber member
- 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
- 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回転軸に装着され
て該回転軸の捩れ振動を抑制する円筒型トーショナルダ
ンパに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cylindrical torsional damper that is attached to a rotating shaft such as a crankshaft of an internal combustion engine to suppress torsional vibrations of the rotating shaft.
従来、この種のトーショナルダンパは第１図に示すよう
に金属製円筒部材１の外周面に断面台形状の円筒ラバ一
部材２の内周面を加硫接着し、該ラバ一部材２の外周面
に前記円筒部材１より大径の金属製円筒部材３を圧入固
定して形成されるか、又は、外側円筒部材の内周面に円
筒ラバ一部材の外周面を加硫接着しその内周面に内側円
筒部材を圧入固定して形成される。Conventionally, this type of torsional damper has been manufactured by vulcanizing and adhering the inner circumferential surface of a cylindrical rubber member 2 having a trapezoidal cross section to the outer circumferential surface of a metal cylindrical member 1, as shown in FIG. It is formed by press-fitting and fixing a metal cylindrical member 3 having a larger diameter than the cylindrical member 1 to the outer circumferential surface, or by vulcanizing and adhering the outer circumferential surface of a cylindrical rubber member to the inner circumferential surface of the outer cylindrical member. It is formed by press-fitting and fixing an inner cylindrical member to the circumferential surface.
かかる円筒ラバ一部材２はダンパ機能を高めるためポア
ソン比が１に近いものが使用されるので、圧入により圧
縮されても圧入前と体積変化は殆んど生じない。Since the cylindrical rubber member 2 has a Poisson's ratio close to 1 in order to enhance the damper function, even if it is compressed by press-fitting, there is almost no change in volume compared to before press-fitting.
従って、半径方向の圧縮により減じられた体積は両側開
口端方向へ拡張した体積によって相殺さ−れることによ
り略々一定体積に保持される。Therefore, the volume reduced by the compression in the radial direction is offset by the volume expanded toward the opening ends on both sides, so that the volume is maintained at a substantially constant volume.
しかしながら、このようにラバ一部材２が両側開口端方
向にのみ拡張を許容される従来構造では、ラバ一部材２
外周面と外側円筒部材３内周面との圧着応力は軸方向に
一様に分布せず、最大となる軸方向中心部と最小となる
両側開口端部とで相当大きな差を生じる。However, in the conventional structure in which the rubber member 2 is allowed to expand only in the direction of both opening ends, the rubber member 2
The compression stress between the outer circumferential surface and the inner circumferential surface of the outer cylindrical member 3 is not uniformly distributed in the axial direction, and a considerably large difference occurs between the axial center where it is maximum and the both open ends where it is minimum.
このため、被取付回転軸例えばクランク軸の捩れ振動を
ラバ一部材２の弾性変形によって吸収する際に、外側円
筒部材３とラバ一部材２との接触面が、両側開口端部近
傍では前記したように圧着力が小さいために滑りを生じ
、該滑りを生じるラバ一部材２外周面の摩耗及びこれに
伴なう発熱が著しかった。Therefore, when the torsional vibration of the attached rotation shaft, for example, the crankshaft, is absorbed by the elastic deformation of the rubber member 2, the contact surface between the outer cylindrical member 3 and the rubber member 2 is As the pressing force is small, slippage occurs, and the outer circumferential surface of the rubber member 2 that causes the slippage is abraded and heat generation accompanying this is significant.
該ラバ一部材２外周面の摩耗は両側開口端部から中央部
に進行し、遂には摩耗によってラバ一部材２の弾性復元
力が消滅し捩れ振動防止機能を失なってしまう。Wear on the outer circumferential surface of the rubber member 2 progresses from both open ends to the center, and eventually the elastic restoring force of the rubber member 2 disappears due to the wear, and the torsional vibration prevention function is lost.
又、ラバ一部材２の圧縮時における体積移動量が大きい
と非接着側であるラバ一部材２外周面は軸方向に伸びで
ある程度自由にその形態を変化できるが、接着側である
内周面は形態を変化できないため、特に両側開口端部の
内周面近傍には極めて大きな引張応力が発生し、該応力
集中によってトーショナルダンパの耐久寿命を著しく短
縮させる結果となっていた。Furthermore, if the amount of volume movement during compression of the rubber member 2 is large, the outer circumferential surface of the rubber member 2 on the non-adhesive side can stretch in the axial direction and change its form freely to some extent, but the inner circumferential surface on the adhesive side Since the torsion damper cannot change its shape, an extremely large tensile stress is generated particularly near the inner circumferential surfaces of the opening ends on both sides, and this stress concentration significantly shortens the durability life of the torsional damper.
本考案は、かかる従来の欠点を解消するためになされた
もので、非接着側の剛性円筒部材と弾性円筒部材との接
触面相互の圧着力を接着面全体にわたって均一化する構
造とすることによって安定した捩れ振動防止機能を維持
し、耐久強度を大幅に向上させた円筒型トーショナルダ
ンパを提供するものである。The present invention was devised in order to eliminate such conventional drawbacks, and by creating a structure that equalizes the pressure force between the contact surfaces of the rigid cylindrical member and the elastic cylindrical member on the non-adhesive side over the entire adhesive surface. The present invention provides a cylindrical torsional damper that maintains a stable torsional vibration prevention function and has significantly improved durability and strength.
以下に本考案を図面に示す実施例に基づき詳細に説明す
る。The present invention will be explained in detail below based on embodiments shown in the drawings.
基本的な実施例を示す第２図にトいて、金属製の内側円
筒部材１１の外周面に接着される円筒ラバ一部材１２は
、第１図と同様断面台形状に形成されたものに円周方向
に等間隔毎に切溝１２ａを入れて複数個の円弧ブロック
１２ｂに分割して成形しである。In FIG. 2 showing a basic embodiment, the cylindrical rubber member 12 bonded to the outer peripheral surface of the inner cylindrical member 11 made of metal has a trapezoidal cross section as in FIG. Cut grooves 12a are formed at equal intervals in the circumferential direction, and the block is divided into a plurality of circular arc blocks 12b.
該切溝１２ａは半径方向内方に向けて間隙を狭める楔状
断面を有し軸方向に沿って設けられる。The kerf 12a has a wedge-shaped cross section that narrows the gap radially inward, and is provided along the axial direction.
尚、図示実施例では各円弧ブロック１２ｂを環状一体に
つなげるべく薄肉を残して切溝１２ａを設けたが、切溝
によって単−若しくは複数の円弧ブロック毎に切離し、
これら複数の部材を接着して環状に構成してもよい。In the illustrated embodiment, the kerf 12a is provided with a thin wall left in order to connect the arc blocks 12b into an annular body, but the kerf can be used to separate each arc block 12b into one or more arc blocks.
A plurality of these members may be bonded together to form a ring shape.
こうして、内側円筒部材１１に接着された円筒ラバ一部
材１２の外周に金属製の外側円筒部材１３を圧入して一
体のトーショナルダンパＤを形成する。In this way, the metal outer cylindrical member 13 is press-fitted onto the outer periphery of the cylindrical rubber member 12 bonded to the inner cylindrical member 11, thereby forming an integrated torsional damper D.
（第２図Ｃ参照）かかる構成とすれば、ラバ一部材１２
は圧入取付後、各円弧ブロック１２ｂの非接着側となる
外周面が軸方向の両側開口部へ拡張すると共に楔状の切
溝１２ａを閉じるべく円周方向へも拡張し外周面の全方
向にわたって拡張するから、該ラバ一部材１２外周面と
外側円筒部材１３内周面との圧着力が周面全体にわたっ
て均一化される。(See FIG. 2C) If such a configuration is adopted, the rubber member 12
After press-fitting, the outer peripheral surface of each arcuate block 12b on the non-adhesive side expands to the openings on both sides in the axial direction, and also expands in the circumferential direction to close the wedge-shaped kerf 12a, and expands in all directions of the outer peripheral surface. Therefore, the pressing force between the outer circumferential surface of the rubber member 12 and the inner circumferential surface of the outer cylindrical member 13 is made uniform over the entire circumferential surface.
このため、従来の如くラバ一部材１２と外側円筒部材１
３との圧着力が局部的に低下することを回避でき、両者
間の滑り及びこれに伴なうラバ一部材１２の摩耗、発熱
を防止して該ラバ一部材１２従って全体としてのトーシ
ョナルダンパＤの耐久寿命を大幅に増長できる。For this reason, as in the past, the rubber member 12 and the outer cylindrical member 1
It is possible to avoid a local decrease in the pressure bonding force between the rubber member 12 and the rubber member 12, thereby preventing slipping between the two and the accompanying wear and heat generation of the rubber member 12, thereby improving the torsional damper as a whole. The durable life of D can be greatly extended.
同時に、円弧ブロック１２ｂ外周面の拡張に伴なって接
着側のブロック１２ｂ内周面近傍に生じる弾性応力も、
該内周面の全域にわたって均一化されるため、局部的な
応力集中を回避でき、接着面の剥離、ラバ一部材１２の
劣化を防止するので、この面からもダンパＤの寿命を増
長できる。At the same time, the elastic stress generated near the inner circumferential surface of the block 12b on the adhesive side due to the expansion of the outer circumferential surface of the arcuate block 12b also
Since it is made uniform over the entire inner circumferential surface, local stress concentration can be avoided, and peeling of the adhesive surface and deterioration of the rubber member 12 are prevented, so the life of the damper D can be extended from this aspect as well.
さらに、各円弧ブロック１２ｂの捩り振動を吸収するた
めの弾性変形に伴なって発生する熱が両側開口端のみな
らず切溝１２ａの隙間を通じて効果的に外部に発散され
るため、ラバ一部材１２の温度上昇を抑制し、やはりダ
ンパＤの寿命増長につながる。Furthermore, since the heat generated due to the elastic deformation of each arc block 12b to absorb torsional vibration is effectively dissipated to the outside not only through the opening ends on both sides but also through the gap between the grooves 12a, the rubber member 12 This suppresses the temperature rise of the damper D, which also leads to an increase in the life of the damper D.
第３図は本考案の第２の実施例を示し１、円筒ラバ一部
材２２を前記実施例同様軸方向に設けた切溝２２ａによ
り円周方向に分割すると共に、軸方向中心部を通る環状
の切溝２２ｂを設けて軸心方向にも２分割したものであ
る。FIG. 3 shows a second embodiment of the present invention 1, in which a cylindrical rubber member 22 is divided in the circumferential direction by grooves 22a provided in the axial direction as in the previous embodiment, and an annular shape passing through the center in the axial direction. It is divided into two parts in the axial direction by providing a kerf 22b.
このようにすれば、分割された各円弧ブロック２２ｃと
非接着側の外側円筒部材との圧着力は接触面全体にわた
ってより均一化し、前記実施例による機能をより高める
ことができる。In this way, the pressing force between each of the divided circular arc blocks 22c and the non-bonded outer cylindrical member can be made more uniform over the entire contact surface, and the function of the embodiment described above can be further enhanced.
本考案は以上説明したように、内・外２つの剛性円筒部
材の間に介装される弾性円筒部材を切溝な設けて複数の
ブロックに分割成形したから、非接着側剛性円筒部材と
各ブロックとの接触面Ｋｉ−ける圧着力が接触面全体に
均一化し、局部的な圧着力低下に伴なう接触面の滑りを
防止してラバ一部材の摩耗、発熱を抑制でき、又、ラバ
一部材接着面に加わる局部的な応力集中を防止でき、更
に、熱発散効率を高めてラバ一部材の温度上昇を抑制で
きること等によりラバ一部材の耐久強度が著しく高めら
れトーショナルダンパの寿命を大幅に増長できるもので
ある。As explained above, in the present invention, the elastic cylindrical member interposed between the two inner and outer rigid cylindrical members is divided into a plurality of blocks with grooves, and the non-adhesive side rigid cylindrical member and each The pressure force on the contact surface Ki with the block is made uniform over the entire contact surface, preventing the contact surface from slipping due to a local decrease in pressure force, suppressing wear and heat generation of the rubber member, and It is possible to prevent local stress concentration on the adhesive surface of one member, and furthermore, it is possible to increase the heat dissipation efficiency and suppress the temperature rise of the rubber member, which significantly increases the durability of the rubber member and extends the life of the torsional damper. It can be expanded significantly.
第１図Ａ〜Ｄは従来の円筒型トーショナルダンパの一例
を示し、Ａ、Ｂは外側円筒部材圧入前の状態を示す上部
断面図及び上部正面図、Ｃ，Ｄは外側円筒部材圧入後の
上部断面図及び上部正面図、第２図Ｃ参照は本考案に係
る円筒型トーショナルダンパの一実施例を示し、Ａは外
側円筒部材圧入前の正面図、ＢはＡのＸ−Ｘ断面図、Ｃ
は外側円筒部材圧入後の正面図、第３図Ａ、Ｂは本考案
に係る円筒型トーショナルダンパの第２の実施例を示す
断面図及び側面図である。
１１・・・・・・内側円筒部材、１２，２２・・・・・
・円筒ラバ一部材、１３・・・・・・外側円筒部材、１
２ａ、２２ｂ２２ｂ・・・・・・切溝、
１２ｂ。
２２ｃ・・・・・・円弧ブロン
ク、
Ｄ・・・・・・トーショナルダンパ。Figures 1A to 1D show an example of a conventional cylindrical torsional damper, where A and B are top sectional views and top front views showing the state before the outer cylindrical member is press-fitted, and C and D are after the outer cylindrical member is press-fitted. The upper sectional view and the upper front view, see FIG. 2C, show an embodiment of the cylindrical torsional damper according to the present invention, where A is a front view before the outer cylindrical member is press-fitted, and B is a XX sectional view of A. , C
3 is a front view after the outer cylindrical member is press-fitted, and FIGS. 3A and 3B are a sectional view and a side view showing a second embodiment of the cylindrical torsion damper according to the present invention. 11...Inner cylindrical member, 12, 22...
・Cylindrical rubber member, 13...Outer cylindrical member, 1
2a, 22b22b...kerf, 12b. 22c...Arc bronc, D...Torsional damper.
Claims (4)
弾性円筒部材を挟着介装して一体化した円筒型トーショ
ナルダンパにおいて、前記弾性円筒部材を、切溝によっ
て複数にブロック化し、その内・外いずれか一方の局面
を前記一方の剛性円筒部材の周面に接着固定し、他側周
面を前記他方の剛性円筒部材の周面に圧着させて介装し
たことを特徴とする円筒型トーショナルダンパゝ０(1) In the gap between the two inner and outer rigid cylindrical members that interpolymerize,
In a cylindrical torsional damper in which an elastic cylindrical member is sandwiched and integrated, the elastic cylindrical member is divided into a plurality of blocks by grooves, and one of the inner and outer sides of the elastic cylindrical member is connected to the one rigid cylindrical member. A cylindrical torsion damper characterized in that the other side circumferential surface is crimped onto the circumferential surface of the other rigid cylindrical member.
円周方向に仕切られてブロック化されてなる実用新案登
録請求の範囲第１項記載の円筒型トーショナルダンパ。(2) The cylindrical torsional damper according to claim 1, wherein the elastic cylindrical member is partitioned into blocks in the circumferential direction by grooves provided along the axial direction.
り軸方向に仕切られてブロック化されてなる実用新案登
録請求の範囲第１項又は第２項記載の円筒型トーショナ
ルダンパ。(3) The cylindrical torsional damper according to claim 1 or 2, wherein the elastic cylindrical member is divided into blocks in the axial direction by grooves provided along the circumferential direction.
筒部材周面が剛性円筒部材周面に圧着されてなる実用新
案登録請求の範囲第１項〜第３項のいずれかに記載の円
筒型トーショナルダンパ。(4) The cut groove has a wedge-shaped cross section, and the circumferential surface of the elastic cylindrical member on the side where the groove width widens is crimped to the circumferential surface of the rigid cylindrical member. The cylindrical torsional damper described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP762779U JPS5827144Y2 (en) | 1979-01-26 | 1979-01-26 | Cylindrical torsional damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP762779U JPS5827144Y2 (en) | 1979-01-26 | 1979-01-26 | Cylindrical torsional damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55109145U JPS55109145U (en) | 1980-07-31 |
| JPS5827144Y2 true JPS5827144Y2 (en) | 1983-06-13 |
Family
ID=28815593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP762779U Expired JPS5827144Y2 (en) | 1979-01-26 | 1979-01-26 | Cylindrical torsional damper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5827144Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2022113947A1 (en) * | 2020-11-24 | 2022-06-02 |
-
1979
- 1979-01-26 JP JP762779U patent/JPS5827144Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55109145U (en) | 1980-07-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100506325B1 (en) | Dual ring damper | |
| US3990324A (en) | Vibration damper and method of making said damper | |
| JPS5855380B2 (en) | Nejiri Shindo damper | |
| JP2007107637A (en) | Torque variation absorbing damper | |
| JPS6222020B2 (en) | ||
| JPS5814568B2 (en) | Torsional vibration damper | |
| JPS5827144Y2 (en) | Cylindrical torsional damper | |
| US4073047A (en) | Method of making vibration damper | |
| JP4232620B2 (en) | Isolation pulley | |
| JP2000346136A (en) | Pulley coupling | |
| JPH0231623Y2 (en) | ||
| JPS5838180Y2 (en) | Cylindrical torsional damper | |
| JPH0118923Y2 (en) | ||
| JPS58152953A (en) | Torsional damper | |
| JPH05332419A (en) | Damper pulley and manufacture thereof | |
| JP2018132089A (en) | Torsion damper | |
| JPH02248751A (en) | Lock-up damper device for torque converter | |
| JPH1144344A (en) | Damper | |
| JP3834070B2 (en) | Torsional damper | |
| JPH11230269A (en) | Damper, and its manufacture | |
| JPH08277884A (en) | Torsional damper | |
| JPH0144833Y2 (en) | ||
| JP2533892B2 (en) | Damper pool | |
| JPH10103409A (en) | Torsional damper | |
| JPH055308Y2 (en) |