JPS6123702Y2 - - Google Patents
Info
- Publication number
- JPS6123702Y2 JPS6123702Y2 JP11921481U JP11921481U JPS6123702Y2 JP S6123702 Y2 JPS6123702 Y2 JP S6123702Y2 JP 11921481 U JP11921481 U JP 11921481U JP 11921481 U JP11921481 U JP 11921481U JP S6123702 Y2 JPS6123702 Y2 JP S6123702Y2
- Authority
- JP
- Japan
- Prior art keywords
- damper
- mass body
- inertial mass
- bearing plate
- circumferential surface
- 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
- 239000000463 material Substances 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 6
- 229920002545 silicone oil Polymers 0.000 claims description 5
- 230000004308 accommodation Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Support Of The Bearing (AREA)
Description
【考案の詳細な説明】
この考案は、内燃機関のクランクシヤフトやカ
ムシヤフトあるいはドラフトシヤフト等の回転シ
ヤフトに加わる捩り振動を減衰して、回転シヤフ
トの折損等の事故を防止するダンパに関するもの
である。[Detailed Description of the Invention] This invention relates to a damper that damps torsional vibrations applied to a rotating shaft such as a crankshaft, camshaft, or draft shaft of an internal combustion engine, thereby preventing accidents such as breakage of the rotating shaft.
近年に至りこの種のダンパとして、捩り振動に
よる繰返し応力をシリコンオイル等の粘性流体の
剪断抵抗により吸収する所謂ビスカスダンパが使
用されるようになつている。このビスカスダンパ
は、第１図および第２図に示すように、回転シヤ
フト１に取付けられるケース２内の環状の収容室
３に、同じく環状に作られた慣性質量体４を周方
向へ回動自在に収容し、ケース２の内壁面と慣性
質量体４との間の空隙にシリコンオイル等の粘性
流体５を充填した構成となつている。このような
ビスカスダンパは、通常は水平な回転シヤフトに
取付けられることが多く、したがつて通常は慣性
質量体４が水平な軸線を中心として板面垂直とな
る状態で使用することが多い。このため実際の使
用時においては慣性質量体４の自重のため、その
外周面が収容室３の内向き壁面３Ａに接触するか
または内周面が収容室３の外向き壁面３Ｂに接触
する。しかるに慣性質量体４と収容室３の内壁面
との間に充填された粘性流体として通常使用され
ているシリコンオイルは潤滑性がほとんど皆無で
あり、このため慣性質量体４と収容室３の内壁面
との接触面は極めて摩耗し易いから、使用を重ね
る内に次第に前記接触面が摩耗してダンパのバラ
ンスが崩れ、これによりダンパの減衰能力が劣化
する。 In recent years, a so-called viscous damper has come into use as this type of damper, which absorbs the repeated stress caused by torsional vibration by using the shear resistance of a viscous fluid such as silicone oil. As shown in FIGS. 1 and 2, this viscous damper has an inertial mass body 4, which is also made in an annular shape, rotated in the circumferential direction in an annular housing chamber 3 in a case 2 attached to a rotating shaft 1. The space between the inner wall surface of the case 2 and the inertial mass body 4 is filled with a viscous fluid 5 such as silicone oil. Such a viscous damper is usually attached to a horizontal rotating shaft, and therefore is usually used with the inertial mass body 4 centered on a horizontal axis and perpendicular to the plate surface. Therefore, during actual use, due to the weight of the inertial mass body 4, its outer peripheral surface contacts the inward wall surface 3A of the storage chamber 3, or its inner peripheral surface contacts the outward wall surface 3B of the storage chamber 3. However, silicone oil, which is normally used as a viscous fluid filled between the inertial mass body 4 and the inner wall surface of the accommodation chamber 3, has almost no lubricity. Since the contact surface with the wall surface is extremely susceptible to wear, as the damper is used over and over again, the contact surface gradually wears out, causing the damper to become unbalanced, thereby degrading the damping ability of the damper.
従来のダンパにおいては、このような摩耗を防
止するため慣性質量体４の内周面もしくは外周面
に耐摩耗性材料例えば砲金等からなるフリクシヨ
ンリング６を嵌着することが行なわれている。し
かしながらこのようなフリクシヨンリングは通常
は鋳造・鍛造によつて得られた金属塊から切削加
工によつて切出すことによつて作られていたか
ら、製造に相当な時間と労力を要すると共に材料
歩留を著しく悪く、したがつて極めて高いコスト
のものとならざるを得ないのが実情であつた。ま
た第１図に示される従来のダンパでは、フリクシ
ヨンリング６に対応して慣性質量体４の角部を凹
状に切落さなければならないため、慣性質量体の
加工コストも嵩み、また慣性質量体の材料歩留も
低下してダンパのコストを押上げる問題があつ
た。 In conventional dampers, in order to prevent such wear, a friction ring 6 made of a wear-resistant material such as gun metal is fitted onto the inner or outer peripheral surface of the inertial mass body 4. However, such friction rings are usually made by cutting from a metal ingot obtained by casting or forging, which requires considerable time and labor to manufacture and reduces material yield. The reality is that it has to be extremely poor in quality and therefore extremely expensive. In addition, in the conventional damper shown in FIG. 1, the corners of the inertial mass body 4 must be cut in a concave shape to correspond to the friction ring 6, which increases the cost of machining the inertial mass body and increases the inertial mass body. There was a problem in that the material yield of the mass body also decreased, increasing the cost of the damper.
この考案は以上の事情に鑑みてなされたもので
あり、低コストで前述の如き摩耗を防止する手段
を講じたダンパを提供するものである。 This invention has been made in view of the above circumstances, and is intended to provide a damper that is low cost and that takes measures to prevent wear as described above.
以下この考案の実施例につき第３図ないし第５
図を参照して詳細に説明する。 Examples of this invention are shown in Figures 3 to 5 below.
This will be explained in detail with reference to the drawings.
第３図および第４図において、半径方向断面が
ほぼ四辺形状をなすように作られた全体として略
環状の慣性質量体４がケース２の収容室３に同心
状に収容されている。このケース２は内燃機関の
クランクシヤフト等の回転シヤフトに取付けられ
るように構成されたものであつて、該回転シヤフ
トの軸心を中心とする略円環状に作られると共
に、半径方向断面が角環状に作られ、その内部に
前記回転シヤフトの軸心を中心とする円周方向に
連続する環状の中空な収容室３が形成されてい
る。そして慣性質量体４と収容室３の内壁面との
間の空隙には粘性流体例えばシリコンオイル５が
充填されている。 3 and 4, a generally annular inertial mass body 4 whose radial cross section is substantially quadrangular is housed concentrically in a housing chamber 3 of a case 2. As shown in FIGS. This case 2 is configured to be attached to a rotating shaft such as a crankshaft of an internal combustion engine, and is formed into a substantially circular ring shape centered on the axis of the rotating shaft, and has a radial cross section shaped like a rectangular ring. An annular hollow storage chamber 3 is formed therein and continues in the circumferential direction centered on the axis of the rotating shaft. A gap between the inertial mass body 4 and the inner wall surface of the storage chamber 3 is filled with a viscous fluid, such as silicone oil 5.
さらに前記慣性質量体４の内周面４Ｂの左右両
側（幅方向両側）の角部とこれに対向する収容室
３の隅部との間には、慣性質量体４の周方向に沿
つて一対の軸受板７，７が配設されている。この
軸受板７は第５図に示すように、長尺な帯条の板
材をロール成形加工そしくはプレス加工等の加工
手段により湾曲成形するとともに幅方向の一方の
縁部９をＬ字状に折曲させたものであつて、その
両端７Ａ，７Ｂが相互に近接対向するように作ら
れている。しかしてこの軸受板７はその両端が互
いに固着されていないから、成形後の残留応力に
より曲率半径が拡大する傾向にあり、したがつて
軸受板７は慣性質量体４の内周面４Ｂに圧接され
た状態で保持される。また、場合によつては軸受
板７を予め湾曲状に成形加工しておかず、挿入時
に強制的に湾曲させてもよい。この場合軸受板７
は弾性変形した状態で挿入されるから、弾性復帰
力により前述の如く慣性質量体４の内周面４Ｂに
圧接される。なお前述の圧接力が不足する場合、
軸受板７が慣性質量体４に対し相対的に回動して
しまうこともあるが、軸受板７は慣性質量体４ま
たは収容室３に対し相対的に軸受として作用すれ
ば良いのであるから、軸受板７が相対回動しても
実用上支障なく、したがつて軸受板７は特に溶接
等により慣性質量体４に固定する必要はない。 Further, between the left and right corners (both sides in the width direction) of the inner circumferential surface 4B of the inertial mass body 4 and the opposite corner of the accommodation chamber 3, there are a pair of corners along the circumferential direction of the inertial mass body 4. Bearing plates 7, 7 are provided. As shown in FIG. 5, this bearing plate 7 is made by forming a long strip plate material into a curved shape by processing means such as roll forming or press working, and one edge 9 in the width direction is formed into an L-shape. It is bent so that both ends 7A and 7B are close to each other and face each other. However, since both ends of the bearing plate 7 of the lever are not fixed to each other, the radius of curvature tends to expand due to residual stress after molding, so the bearing plate 7 is pressed against the inner circumferential surface 4B of the inertial mass body 4. is maintained in the same state. Further, in some cases, the bearing plate 7 may not be formed into a curved shape in advance, but may be forcibly bent during insertion. In this case bearing plate 7
Since it is inserted in an elastically deformed state, it is pressed against the inner circumferential surface 4B of the inertial mass body 4 by the elastic return force as described above. In addition, if the pressure mentioned above is insufficient,
Although the bearing plate 7 may rotate relative to the inertial mass body 4, the bearing plate 7 only has to act as a bearing relative to the inertial mass body 4 or the accommodation chamber 3. There is no practical problem even if the bearing plate 7 rotates relative to the bearing plate 7, so there is no need to fix the bearing plate 7 to the inertial mass body 4 by welding or the like.
前記軸受板７はリン青銅もしくは砲金等の耐摩
耗性材料、すなわち通常軸受として使用されてい
る材料で作れば良く、また場合によつてはポリア
セタール系樹脂等の耐摩耗性樹脂を使用しても良
い。但し後者の場合、滑り性は良好であるが耐熱
性が低く、したがつて内燃機関の近傍や摩擦によ
る発熱が著しく大きいと予想される条件下では前
者の材料を使用することが望ましい。 The bearing plate 7 may be made of a wear-resistant material such as phosphor bronze or gunmetal, that is, a material normally used for bearings, or may be made of wear-resistant resin such as polyacetal resin in some cases. good. However, in the latter case, the material has good slip properties but low heat resistance, and therefore it is desirable to use the former material in the vicinity of an internal combustion engine or under conditions where heat generation due to friction is expected to be extremely large.
なお前述の実施例においては軸受板７，７を慣
性質量体４の内周面側の角部に配設したが、場合
によつては軸受板７，７を慣性質量体４の外周面
側の角部に対応する箇所、すなわち慣性質量体４
の外周面４Ａの左右の角部と収容室３の左右の隅
部との間に配設しても良い。けだし慣性質量体４
の外周面４Ａが収容室３の内向き壁面３Ａに当接
するいわゆる“外当り”の状態となるよう設計さ
れている場合には軸受板７を慣性質量体４の外側
に配設し、逆に慣性質量体４の内周面４Ｂが収容
室３の外向き壁面３Ｂに当接するいわゆる“内当
り”の状態となるように設計されている場合には
軸受板７を慣性質量体４の内側に配設すれば良
い。 In the above-mentioned embodiment, the bearing plates 7, 7 are arranged at the corners of the inner circumferential surface of the inertial mass body 4, but in some cases, the bearing plates 7, 7 are arranged at the corners of the inertial mass body 4, at the outer circumferential side. The part corresponding to the corner of , that is, the inertial mass body 4
It may be arranged between the left and right corners of the outer circumferential surface 4A and the left and right corners of the storage chamber 3. Bare inertial mass body 4
If the outer circumferential surface 4A of the storage chamber 3 is designed to be in a so-called "outer contact" state in which it contacts the inward wall surface 3A, the bearing plate 7 is disposed outside the inertial mass body 4, and vice versa. If the inner circumferential surface 4B of the inertial mass body 4 is designed to be in a so-called "inner contact" state, in which the inner circumferential surface 4B of the inertial mass body 4 comes into contact with the outward facing wall surface 3B of the storage chamber 3, the bearing plate 7 is placed inside the inertial mass body 4. All you have to do is set it up.
この考案のダンパは、前述の説明で明らかなよ
うに、帯状の板材を湾曲させるとともに幅方向の
一方の縁部をＬ字状に折曲させてなる軸受板の両
端を相互に連結固着せずに慣性質量体４の内周面
または外内周面の幅方向両側の角部とこれに対向
する収容室３の隅部との間に配設して、慣性質量
体４と収容室３との接触面の摩耗を防止するよう
にしたものである。したがつてこの考案によれば
従来のダンパの如く切削加工により得られた連続
環状材からなるフリクシヨンリングを使用して摩
耗を防止する場合に比較し、軸受板の製造が格段
に容易となつて製造に時間と労力を要さず、しか
も製造上の材料歩留も高いから、軸受板のコスト
が極めて安価であり、さらには軸受板の装着作業
が極めて容易となり、かつまた軸受板が摩耗した
際には軸受板を容易に交換し得るから、ケースお
よび慣性質量体を半永久的に使用することがで
き、したがつてダンパ全体のコストを従来よりも
格段に安価とすることができる等の顕著な効果が
得られる。 As is clear from the above explanation, the damper of this invention is made by curving a band-shaped plate and bending one edge in the width direction into an L-shape, without connecting and fixing both ends of the bearing plate to each other. The inertial mass body 4 and the housing chamber 3 are arranged between the corners on both sides in the width direction of the inner circumferential surface or the outer and inner circumferential surfaces of the inertial mass body 4 and the opposite corners of the accommodation chamber 3. This is designed to prevent wear on the contact surfaces. Therefore, according to this invention, the manufacture of the bearing plate is much easier than in conventional dampers where friction rings made of continuous annular material obtained by cutting are used to prevent wear. Since the manufacturing process does not require much time or labor, and the material yield for manufacturing is high, the cost of the bearing plate is extremely low.Furthermore, the installation work of the bearing plate is extremely easy, and the bearing plate does not wear out. Since the bearing plate can be easily replaced when the damper is damaged, the case and the inertial mass body can be used semi-permanently, and the overall cost of the damper can be made much cheaper than before. Remarkable effects can be obtained.
第１図は従来のダンパの一例を示す縦断側面
図、第２図は第１図の−線における正面断面
図、第３図はこの考案の実施例のダンパの要部を
示す縦断側面図、第４図は第３図の−線にお
ける断面図、第５図はこの考案のダンパに使用さ
れる軸受板の一例を示す斜視図である。
２……ケース、３……収容室、４……慣性質量
体、５……粘性流体、７……軸受板、９……縁
部。
FIG. 1 is a vertical sectional side view showing an example of a conventional damper, FIG. 2 is a front sectional view taken along the - line in FIG. FIG. 4 is a sectional view taken along the - line in FIG. 3, and FIG. 5 is a perspective view showing an example of a bearing plate used in the damper of this invention. 2... Case, 3... Accommodation chamber, 4... Inertial mass body, 5... Viscous fluid, 7... Bearing plate, 9... Edge.
Claims (1)
前記収容室内に、環状の慣性質量体を相対的に回
動可能となるよう同心状に収容し、前記慣性質量
体と収容室の内壁面との間の空隙にシリコンオイ
ル等の粘性流体を充填したダンパにおいて、 耐摩耗性材料からなる帯状の板材を湾曲させる
とともにその幅方向の一方の縁部をＬ字状に折曲
させて軸受板を形成し、その湾曲された軸受板の
両端を連結固着させない状態で一対の軸受板を前
記慣性質量体の内周面または外周面の幅方向両側
の角部とこれに対向する収容室の隅部との間に周
方向に沿つて配設したことを特徴とするダンパ。[Claims for Utility Model Registration] An annular inertial mass body is concentrically accommodated in the housing chamber of a case in which a hollow annular housing chamber is formed, and the inertial mass body is relatively rotatable. In a damper in which the gap between the body and the inner wall of the containment chamber is filled with viscous fluid such as silicone oil, a strip-shaped plate made of wear-resistant material is curved and one edge in the width direction is shaped into an L-shape. A pair of bearing plates is bent to form a bearing plate, and with both ends of the curved bearing plates not connected and fixed, a pair of bearing plates is attached to the corners on both widthwise sides of the inner circumferential surface or outer circumferential surface of the inertial mass body. A damper characterized in that the damper is disposed along the circumferential direction between the damper and the corner of the storage chamber facing the damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11921481U JPS6123702Y2 (en) | 1981-08-10 | 1981-08-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11921481U JPS6123702Y2 (en) | 1981-08-10 | 1981-08-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5751849U JPS5751849U (en) | 1982-03-25 |
| JPS6123702Y2 true JPS6123702Y2 (en) | 1986-07-16 |
Family
ID=29479866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11921481U Expired JPS6123702Y2 (en) | 1981-08-10 | 1981-08-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6123702Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0640345Y2 (en) * | 1985-04-12 | 1994-10-19 | 三菱自動車工業株式会社 | Viscous damper device for vehicle engine |
| DE19855420C2 (en) * | 1998-12-01 | 2001-05-31 | Hasse & Wrede Gmbh | Heavy torsional vibration damper |
-
1981
- 1981-08-10 JP JP11921481U patent/JPS6123702Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5751849U (en) | 1982-03-25 |
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