JPH0740114Y2 - damper - Google Patents
damperInfo
- Publication number
- JPH0740114Y2 JPH0740114Y2 JP1988094543U JP9454388U JPH0740114Y2 JP H0740114 Y2 JPH0740114 Y2 JP H0740114Y2 JP 1988094543 U JP1988094543 U JP 1988094543U JP 9454388 U JP9454388 U JP 9454388U JP H0740114 Y2 JPH0740114 Y2 JP H0740114Y2
- Authority
- JP
- Japan
- Prior art keywords
- mass body
- hub
- damper
- convex portion
- inner diameter
- 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 - Lifetime
Links
Landscapes
- Pulleys (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、自動車エンジンのクランクシャフトなど各種
の回転軸系に取り付けられて該軸系に生起される振動を
吸収減衰するダンパに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a damper that is attached to various rotary shaft systems such as a crankshaft of an automobile engine and absorbs and damps vibrations generated in the shaft systems.
従来から、この種ダンパの一例として、第2図に示すよ
うに、円環形を呈するハブ(1)の外周に環状の質量体
(2)を同心的に離間配置し、該ハブ(1)と質量体
(2)の間に設定した環状空間内に軸方向一端側からゴ
ム材製の弾性体(3)を圧入してなる嵌合タイプのトー
ショナルダンパが知られている。質量体(2)はその外
径面に無端ベルトを係合するプーリ部(2b)を有してい
る。ハブ(1)はその一部を外径方向へ膨出成形して環
状の凸部(1a)を有し、質量体(2)の内径面にこの凸
部(1a)に対応して環状の凹部(2a)が形成されてい
る。この凹凸(1a)(2a)により前記環状空間にはその
中途に径寸法を拡縮する蛇行部が設定され、弾性体
(3)はこの蛇行部に沿って変形を受けながら圧入され
る。この蛇行構造は、弾性体(3)が環状空間から抜け
出たりハブ(1)と質量体(2)が軸方向にずれたりす
ることのないように一種のストッパとして作用する。Conventionally, as an example of this kind of damper, as shown in FIG. 2, an annular mass body (2) is concentrically arranged on the outer periphery of a hub (1) having an annular shape, and the A fitting type torsional damper is known in which an elastic body (3) made of a rubber material is press-fitted from one end side in the axial direction into an annular space set between the mass bodies (2). The mass body (2) has a pulley portion (2b) for engaging the endless belt on its outer diameter surface. A part of the hub (1) is bulged in the outer diameter direction to have an annular convex portion (1a), and the inner surface of the mass body (2) has an annular convex portion (1a) corresponding to the convex portion (1a). A recess (2a) is formed. Due to the irregularities (1a) and (2a), a meandering portion whose diameter is expanded and contracted is set in the middle of the annular space, and the elastic body (3) is press-fitted along the meandering portion while undergoing deformation. This meandering structure acts as a kind of stopper so that the elastic body (3) does not slip out of the annular space and the hub (1) and the mass body (2) do not shift axially.
上記構成のトーショナルダンパは、たとえば自動車エン
ジンのクランクシャフトに取り付けられ、質量体(2)
のプーリ部(2b)と各種の補機の間に無端ベルトを架け
渡してクランクシャフトから補機へトルクを滑らかに伝
達するものであるが、上記の構成から次の問題が指摘さ
れる。The torsional damper having the above structure is attached to, for example, a crankshaft of an automobile engine, and is attached to the mass body (2).
Although an endless belt is laid between the pulley section (2b) and various accessories to smoothly transmit torque from the crankshaft to the accessories, the following problems are pointed out from the above configuration.
すなわちハブ(1)と質量体(2)の間に弾性体(3)
を圧入し、さらにこの圧入を上記蛇行部に沿って弾性体
(3)を変形させながら行なうものであることから、当
該ダンパの組み立てに多大な手間がかかって熟練を要す
る。上記ダンパにおいてハブ(1)と質量体(2)は両
部材の間に弾性体(3)を圧入することだけで相対回転
を防止されており、このため環状空間には該空間より大
きな弾性体(3)が強制的に圧入される。狭い空間にあ
る程度の厚さを有する弾性体(3)を圧入する作業は抵
抗が大きく困難である。またこの圧入に際してハブ
(1)と質量体(2)に対し弾性体(3)を廻しながら
ねじ込んで行く場合があるが、この場合は結果として弾
性体(3)が捩れた状態で取り付けられて該弾性体
(3)のバネ特性や耐久性に不具合を生じるおそれがあ
る。That is, the elastic body (3) is provided between the hub (1) and the mass body (2).
Since the press-fitting is performed and the press-fitting is performed while the elastic body (3) is deformed along the meandering portion, it takes a lot of time and effort to assemble the damper. In the above damper, the hub (1) and the mass body (2) are prevented from rotating relative to each other only by press-fitting the elastic body (3) between the two members. Therefore, the annular space has a larger elastic body than the space. (3) is forcibly pressed in. The work of press-fitting the elastic body (3) having a certain thickness into a narrow space has a large resistance and is difficult. In addition, in this press-fitting, the elastic body (3) may be screwed into the hub (1) and the mass body (2) while turning, but in this case, the elastic body (3) is attached in a twisted state. The elastic body (3) may have problems in spring characteristics and durability.
また上記ダンパには空間の有効利用を図ることができな
い問題がある。すなわち質量体(2)は一般に鋳鉄によ
って成形されるが、この材質を変えることなく質量を大
きくする場合、体積の大きな質量体(2)が用いられ
る。一方、ハブ(1)の内径側には特に用途のない空間
(4)があり、質量体(2)をこの内径側へ拡大するこ
とができれば当該ダンパ全体の外形を大きくすることな
く空間の有効利用を図ることができる。しかしながら上
記ダンパによると質量体(2)の内径側に弾性体(3)
とハブ(1)が配置されていることから、質量体(2)
を内径側へ拡大しようとする弾性体(3)やハブ(1)
の寸法も変更しなければならず、従来はこの不都合を避
けるためやむなく質量体(2)を軸方向へ拡大して外形
の大型化を甘受している。Further, the damper has a problem that it is impossible to effectively use the space. That is, the mass body (2) is generally formed by cast iron, but when the mass is increased without changing the material, the mass body (2) having a large volume is used. On the other hand, there is a space (4) on the inner diameter side of the hub (1) that has no particular use, and if the mass body (2) can be expanded to this inner diameter side, the space can be effectively used without increasing the outer diameter of the damper as a whole. Can be used. However, according to the above damper, the elastic body (3) is provided on the inner diameter side of the mass body (2).
Since the hub and the hub (1) are arranged, the mass body (2)
Elastic body (3) or hub (1) that tries to expand the inner diameter side
In order to avoid this inconvenience, conventionally, the mass body (2) is enlarged in the axial direction and the outer shape is upsized.
本考案は以上の点に鑑み、上記従来技術の問題を解消す
べく案出されたものであって、この目的を達成するた
め、軸方向に離間対向した1対のハブ対向部の間に弾性
体を介して質量体を挟設するとともに、前記ハブ対向部
に環状の凸部を設け、前記質量体の軸方向端面に前記凸
部に対応して環状の凹部を設ける構成とした。In view of the above points, the present invention has been devised to solve the above-mentioned problems of the prior art, and in order to achieve this object, an elastic member is provided between a pair of hub facing portions that are axially separated and facing each other. The mass body is sandwiched via the body, an annular convex portion is provided on the hub facing portion, and an annular concave portion is provided on the axial end surface of the mass body corresponding to the convex portion.
本考案のダンパは、質量体の軸方向両側に弾性体を並べ
さらにその外側にハブ対向部を並べて全体として該並設
部に5層構造を構成し、中間の3層を両側からハブ対向
部によって挟み込むことにより組み立てられる。組み立
てられたダンパは弾性体を圧入するものでないことから
該弾性体に捩れを生じさせることなく構成され、また質
量体の内径側に特に部品を有しないことから必要に応じ
て質量体を内径側へ拡大することができる。またハブ対
向部に環状の凸部を設けるとともに質量体の軸方向端面
にこの凸部に対応して環状の凹部を設けたことから凸部
と凹部が弾性体を介して間接的に係合し、これにより質
量体がハブに対して大きく偏心することがない。In the damper of the present invention, elastic bodies are arranged on both axial sides of the mass body, and a hub facing portion is arranged outside the mass body to form a five-layer structure in the juxtaposed portion as a whole. It is assembled by sandwiching by. Since the assembled damper does not press-fit the elastic body, the damper is constructed without twisting the elastic body. Further, since there is no particular component on the inner diameter side of the mass body, the mass body may be accommodated on the inner diameter side as necessary. Can be expanded to. In addition, since the annular convex portion is provided on the hub facing portion and the annular concave portion is provided on the axial end surface of the mass body corresponding to the convex portion, the convex portion and the concave portion are indirectly engaged via the elastic body. Therefore, the mass body is not largely eccentric with respect to the hub.
つぎに本考案の実施例を図面にしたがって説明する。 Next, an embodiment of the present invention will be described with reference to the drawings.
第1図に示すように、軸方向に離間対向した1対のハブ
対向部(11a)(12a)が2つのハブ(11)(12)部品に
よって設定され、このハブ対向部(11a)(12a)の間に
軸方向両側に弾性体(14)(15)を介在させて質量体
(13)が挾設されている。質量体(13)の外径面にはプ
ーリ部(13a)が形成されている。図上左側のハブ(1
1)はその内径部分(11c)を他方のハブ(12)に近接す
るように屈曲形成され、両ハブ(11)(12)はその内径
端部(11b)(12b)で互いに溶接またはボルト止めなど
により連結されている。左側のハブ(11)の前記内径部
分(11c)は質量体(13)の内径面から離れた位置に設
定され、これにより質量体(13)の内径側に環状の空間
(16)が設けられている。各ハブ対向部(11a)(12a)
にその一部を質量体(13)側へ膨出成形して環状の凸部
(11d)(12d)が形成され、質量体(13)の軸方向端面
にこの凸部(11d)(12d)に対応する環状の凹部(13
b)(13c)が形成されている。この凹凸(11d)(12d)
(13b)(13c)はそれぞれの対の組み合わせによって弾
性体(14)(15)を変形させる蛇行部を形成し、該弾性
体(14)(15)が抜け出たりハブ(11)(12)と質量体
(13)が径方向にずれたりするのを防止している。As shown in FIG. 1, a pair of hub facing portions (11a) (12a) axially separated and facing each other are set by two hub (11) (12) parts, and the hub facing portions (11a) (12a) are set. ), The mass body (13) is interposed between the elastic bodies (14, 15) on both sides in the axial direction. A pulley portion (13a) is formed on the outer diameter surface of the mass body (13). Hub (1
1) is bent so that its inner diameter portion (11c) is close to the other hub (12), and both hubs (11) (12) are welded or bolted to each other at their inner diameter ends (11b) (12b) Are linked by. The inner diameter portion (11c) of the left hub (11) is set at a position distant from the inner diameter surface of the mass body (13), whereby an annular space (16) is provided on the inner diameter side of the mass body (13). ing. Each hub facing part (11a) (12a)
A part of it is bulged to the mass body (13) side to form an annular convex portion (11d) (12d), and the convex portion (11d) (12d) is formed on the axial end surface of the mass body (13). Corresponding to the annular recess (13
b) (13c) is formed. This unevenness (11d) (12d)
(13b) and (13c) form a meandering portion that deforms the elastic bodies (14) and (15) by the combination of the respective pairs, and the elastic bodies (14) and (15) come out or become hubs (11) and (12). The mass body (13) is prevented from being displaced in the radial direction.
上記ダンパはその組み立てに際し、質量体(13)と弾性
体(14)(15)の3部品をハブ対向部(11a)(12a)の
間に挟み込むようにして2つのハブ(11)(12)を相互
に連結する。弾性体(14)(15)はこの挟み込みにより
軸方向に圧縮され、適度なバネ定数が設定される。上記
ダンパはこのように弾性体(14)(15)をはじめから挟
み込んで平面的に圧縮するだけであることから困難な圧
入作業を必要としないで容易に組み立てることができ、
併せて弾性体(14)(15)に捩れを生じさせずに済む。
質量体(13)の質量を大きくするため該質量体(13)に
体積の大きなものを用いる場合は、質量体(13)の内径
側に空間(16)があることから弾性体(14)(15)やハ
ブ(11)(12)をそのままに質量体(13)を内径側へ拡
大することができ、当該ダンパ全体の外形および占有ス
ペースを変えずに済む。質量体(13)の両側に設定され
る蛇行構造についてはそのストッパ機能を向上させるこ
とができる。すなわち第2図に示した従来のダンパによ
るとハブ(1)の外周に質量体(2)を外挿することか
ら凸部(1a)の最大外径寸法を質量体(2)の最小内径
寸法以下に設定しなければならず金属同士(ハブ(1)
(11)(12)は一般に板金や鋳鉄により成形されてい
る)の係合を保障することができなかったが、第1図の
ダンパは外挿構造を有しないことから各凹凸を軸方向に
オーバーラップさせて金属同士の係合を保障することが
できる。ハブ(11)(12)についてはこれを1つの部品
とし、該ハブに2面の対向部を設定して質量体(13)を
カシメにより挾持することにしてもよい。When assembling the damper, the two hubs (11) and (12) are made by sandwiching the three parts of the mass body (13) and the elastic bodies (14) and (15) between the hub facing portions (11a) and (12a). Are interconnected with each other. The elastic bodies (14, 15) are compressed in the axial direction by this sandwiching, and a proper spring constant is set. In this way, the damper can be easily assembled without the need for difficult press-fitting work, since the elastic bodies (14) and (15) are sandwiched from the beginning and compressed in a plane as described above.
In addition, the elastic bodies (14) (15) do not have to be twisted.
When the mass body (13) having a large volume is used to increase the mass of the mass body (13), the elastic body (14) (because of the space (16) on the inner diameter side of the mass body (13). The mass body (13) can be expanded to the inner diameter side while the 15) and the hubs (11) and (12) are left as they are, and the outer shape and the occupied space of the damper as a whole do not have to be changed. The stopper function of the meandering structure set on both sides of the mass body (13) can be improved. That is, according to the conventional damper shown in FIG. 2, since the mass body (2) is extrapolated to the outer periphery of the hub (1), the maximum outer diameter dimension of the convex portion (1a) is set to the minimum inner diameter dimension of the mass body (2). Must be set to the following metal to metal (hub (1)
(11) and (12) are generally formed of sheet metal or cast iron), but the damper in FIG. Overlapping can ensure engagement of the metals. The hubs (11) and (12) may be a single component, and the hub may be provided with opposing portions on two sides to clamp the mass body (13) by caulking.
本考案のダンパは以上説明したように軸方向に離間対向
した1対のハブ対向部の間に弾性体を介して質量体を挾
設してなり、弾性体の圧入をなくして組み立てを容易化
するとともに弾性体に捩れをなくしてバネ特性を安定さ
せ耐久性を向上させることができる。また質量体の体積
を拡大する必要があるときに内径側への拡大を可能とし
て外形や占有スペースが増大するのを抑えることができ
る。またハブ対向部に環状の凸部を設けるとともに質量
体の軸方向端面にこの凸部に対応する環状の凹部を設け
て凸部と凹部を弾性体を介して間接的に係合させたため
に、弾性体および質量体の内周側が開放されているにも
拘らず、質量体がハブに対して大きく偏心することがな
い。そしてこのことは特に質量体にプーリ部が設けられ
て、このプーリ部に巻架された無端ベルトの張力が質量
体に作用する場合に有効である。As described above, the damper of the present invention has a mass body sandwiched between a pair of hub facing portions that are spaced apart and opposed to each other in the axial direction with an elastic body interposed therebetween, thereby eliminating the press-fitting of the elastic body and facilitating assembly. In addition, the elastic body can be prevented from twisting, the spring characteristics can be stabilized, and the durability can be improved. Further, when it is necessary to increase the volume of the mass body, the mass body can be expanded to the inner diameter side and the outer shape and the occupied space can be prevented from increasing. Further, since an annular convex portion is provided on the hub facing portion and an annular concave portion corresponding to this convex portion is provided on the axial end surface of the mass body, and the convex portion and the concave portion are indirectly engaged via the elastic body, Even though the inner peripheral sides of the elastic body and the mass body are open, the mass body does not largely decenter from the hub. This is particularly effective when the mass body is provided with a pulley portion and the tension of the endless belt wound around the pulley portion acts on the mass body.
第1図は本考案の実施例に係るダンパの半裁断面図、第
2図は従来例に係るダンパの半裁断面図である。 (11)(12)ハブ、(11a)(12a)ハブ対向部 (11b)(12b)内径端部、(11c)内径部分 (11d)(12d)凸部、(13)質量体 (13a)プーリ部、(13b)(13c)凹部 (14)(15)弾性体、(16)空間FIG. 1 is a half cutaway view of a damper according to an embodiment of the present invention, and FIG. 2 is a half cutaway view of a damper according to a conventional example. (11) (12) hub, (11a) (12a) hub facing part (11b) (12b) inner diameter end, (11c) inner diameter part (11d) (12d) convex part, (13) mass body (13a) pulley Section, (13b) (13c) recess (14) (15) elastic body, (16) space
Claims (1)
(11a)(12a)の間に弾性体(14)(15)を介して質量
体(13)を挟設するとともに、前記ハブ対向部(11a)
(12a)に環状の凸部(11d)(12d)を設け、前記質量
体(13)の軸方向端面に前記凸部(11d)(12d)に対応
して環状の凹部(13b)(13c)を設けたことを特徴とす
るダンパ。1. A mass body (13) is sandwiched between a pair of hub facing portions (11a) (12a) axially separated and facing each other via elastic bodies (14) (15), and the hub is also provided. Opposing part (11a)
An annular convex portion (11d) (12d) is provided on (12a), and an annular concave portion (13b) (13c) corresponding to the convex portion (11d) (12d) on the axial end surface of the mass body (13). A damper characterized by having.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988094543U JPH0740114Y2 (en) | 1988-07-19 | 1988-07-19 | damper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988094543U JPH0740114Y2 (en) | 1988-07-19 | 1988-07-19 | damper |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0216850U JPH0216850U (en) | 1990-02-02 |
JPH0740114Y2 true JPH0740114Y2 (en) | 1995-09-13 |
Family
ID=31319083
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1988094543U Expired - Lifetime JPH0740114Y2 (en) | 1988-07-19 | 1988-07-19 | damper |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0740114Y2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2762771B2 (en) * | 1991-06-13 | 1998-06-04 | 日産自動車株式会社 | Vehicle steering vibration suppression device |
JP2003127879A (en) * | 2001-10-22 | 2003-05-08 | Toyoda Mach Works Ltd | Electric power steering device |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57100656U (en) * | 1980-12-10 | 1982-06-21 | ||
JPS6114230U (en) * | 1984-06-29 | 1986-01-27 | 豊田合成株式会社 | torsional damper |
-
1988
- 1988-07-19 JP JP1988094543U patent/JPH0740114Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0216850U (en) | 1990-02-02 |
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