JP2004239384A - Torsional damper and method of manufacturing the same - Google Patents

Torsional damper and method of manufacturing the same Download PDF

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JP2004239384A
JP2004239384A JP2003030496A JP2003030496A JP2004239384A JP 2004239384 A JP2004239384 A JP 2004239384A JP 2003030496 A JP2003030496 A JP 2003030496A JP 2003030496 A JP2003030496 A JP 2003030496A JP 2004239384 A JP2004239384 A JP 2004239384A
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diameter
rings
damper
inertia
ring
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JP3998586B2 (en
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Hideki Otaka
秀樹 大高
Masanori Mineo
正規 峯尾
Kenji Saito
憲治 斉藤
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Hino Motors Ltd
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Hino Motors Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly reliable torsional damper manufacturable at rather low cost. <P>SOLUTION: This torsional damper comprises a disk damper body 11, first and second annular elastic members 12 and 13 fixed to both faces of the damper body, inertia rings 14 and 16 fixed to the first and second annular members so as to hold the damper body through clearances thereof from the peripheral edge part of the damper body, and a connection ring 17 connecting the peripheral edge part of the first inertia ring to the peripheral edge part of the second inertia ring through the clearance thereof from the peripheral edge of the damper body. The outer diameter of the first inertia ring and the outer diameter of the second inertia ring are formed larger than the outer diameter of the damper body, a projected line 17a allowed to be inserted between the opposed peripheral edge parts of the first and second inertia rings is formed on the entire inner peripheral surface of the connection ring, and annular wedge members 18 and 30 are press-fitted between the outer peripheral surfaces of the first and second inertia rings and the inner peripheral surface of the connection ring so that the projected line can be held by the first and second inertia rings. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、クランクシャフトの端部等に設けられ、そのクランクシャフト等のねじり振動を低減して、エンジンの振動及び騒音を低減するトーショナルダンパ及びその製造方法に関するものである。
【０００２】
【従来の技術】
従来、エンジンの振動及び騒音を低減するためにクランクシャフト等にトーショナルダンパを取付けることが知られている。このトーショナルダンパは、図５に示すように、円板状のダンパ本体１と、そのダンパ本体１の両面にダンパ本体１と同軸にかつそのダンパ本体１を挟むように固着された第１及び第２環状弾性部材２，３と、ダンパ本体１の周縁部と間隔をあけてダンパ本体１を挟むように第１及び第２環状弾性部材２，３にそれぞれ固着された第１及び第２慣性リング４，６と、ダンパ本体１の周縁部と所定の間隔をあけて第１慣性リング４の周縁部と第２慣性リング６の周縁部とを連結する連結リング７とを備え、第１及び第２環状弾性部材２，３と第１及び第２慣性リング４，６と連結リング７により囲まれるダンパ本体１の周縁部における空間にはシリコーンオイル８が充填される（例えば、特許文献１参照。）。そしてクランクシャフト等にダンパ本体１が取付けられ、第１及び第２慣性リング４，６とダンパ本体１との間に生じるシリコーンオイル８の剪断応力によりクランクシャフト等のねじり振動を緩衝するようになっている。
【０００３】
図６に示すように、従来のトーショナルダンパにおける第１及び第２環状弾性部材２，３は金型９を用いて作られる。この金型９はシリコーンオイル８が充填される空間を確保するために割型構造とされ、固定型９ａと移動型９ｂの他にスライド型９ｃとを備える。第１及び第２慣性リング４，６はダンパ本体１の周縁部と間隔をあけるようにダンパ本体１とともにこの金型９に装着され、その金型９に合成ゴムを充填し加硫させる。この金型９を用いて合成ゴムを充填加硫させることにより第１及び第２環状弾性部材２，３は成型され、この第１及び第２環状弾性部材２，３を介して第１及び第２慣性リング４，６はダンパ本体１に固着される。図５に戻って、連結リング７は別部材とされ、第１及び第２慣性リング４，６に後から嵌入される。そして、第１及び第２環状弾性部材２，３が熱により破壊されることを防止するために、連結リング７はレーザ溶接により第１及び第２慣性リング４，６に溶着される。
【０００４】
【特許文献１】
実開平４−５０７４６号公報
【０００５】
【発明が解決しようとする課題】
しかし、レーザ溶接をするためには所定の設備を必要としそのコストが比較的高いことから、レーザ溶接により連結リング７を第１及び第２慣性リング４，６に溶着する従来のトーショナルダンパは、その単価が押し上げられる不具合があった。特に従来のトーショナルダンパにおける第１及び第２慣性リング４，６の外径はダンパ本体１の外径より小さく形成されていることから、連結リング７自体も２分割され、第１慣性リング４の周縁部に溶着された第１連結リング７ａと第２慣性リング６の周縁部に溶着された第２連結リング７ｂとを更にレーザ溶接することによりダンパ本体１の周縁部と所定の間隔をあけて第１慣性リング４の周縁部と第２慣性リング６の周縁部とを連結している。このため、部品点数が増加するとともに溶接工数も更に増加して、トーショナルダンパの単価が著しく押し上げられる問題点があった。
本発明の目的は、比較的低いコストであってかつ信頼性の高いトーショナルダンパ及びその製造方法を提供することにある。
【０００６】
【課題を解決するための手段】
請求項１に係る発明は、図１に示すように、円板状のダンパ本体１１と、ダンパ本体１１の両面にダンパ本体１１と同軸にかつダンパ本体１１を挟むように固着された第１及び第２環状弾性部材１２，１３と、ダンパ本体１１の周縁部と間隔をあけてダンパ本体１１を挟むように第１及び第２環状弾性部材１２，１３にそれぞれ固着された第１及び第２慣性リング１４，１６と、ダンパ本体１１の周縁部と間隔をあけて第１慣性リング１４の周縁部と第２慣性リング１６の周縁部とを連結する連結リング１７とを備えたトーショナルダンパの改良である。
その特徴ある構成は、第１慣性リング１４の外径及び第２慣性リング１６の外径がダンパ本体１１の外径よりそれぞれ大きく形成され、連結リング１７の内周面全体に第１及び第２慣性リング１４，１６の互いに相対向する周縁部の間に挿入可能な凸条１７ａが形成され、第１及び第２慣性リング１４，１６の各外周面と連結リング１７の内周面との間に第１及び第２環状くさび部材１８，２０が第１及び第２慣性リング１４，１６により凸条１７ａを挟持するようにそれぞれ圧入されたところにある。
【０００７】
請求項５に係る発明は、更に図３に示すように、円板状のダンパ本体１１と外径がダンパ本体１１の外径より大きく形成された第１及び第２慣性リング１４，１６とを第１及び第２慣性リング１４，１６がダンパ本体１１の周縁部と間隔をあけてダンパ本体１１を挟むように金型２１に装着する工程と、金型２１に合成ゴムを充填加硫させてそれぞれ大径部１２ａ，１３ａを第１及び第２慣性リング１４，１６の各内周面に接着しかつ大径部１２ａ，１３ａより小径に形成された小径部１２ｂ，１３ｂをダンパ本体１１の両面に接着するように第１及び第２環状弾性部材１２，１３を成型する工程と、ダンパ本体１１の両面に環状弾性部材１２，１３を介して取付けられた第１及び第２慣性リング１４，１６の互いに相対向する周縁部の間に挿入可能な凸条１７ａが内周面に形成されかつダンパ本体１１の周縁部と所定の隙間をあけて覆う連結リング１７を第１及び第２慣性リング１４，１６に嵌入する工程と、第１及び第２慣性リング１４，１６の各外周面と連結リング１７の内周面との間に環状くさび部材１８をそれぞれ圧入して第１及び第２慣性リング１４，１６により凸条１７ａを挟持させる工程とを含むトーショナルダンパの製造方法である。
【０００８】
この請求項１に係るトーショナルダンパ及び請求項５に係るトーショナルダンパの製造方法では、第１慣性リング１４の外径及び第２慣性リング１６の外径をダンパ本体１１の外径よりそれぞれ大きく形成したので、単一の連結リング１７を用いることができ、２分割された連結リングを用いていた従来に比較して部品点数を減少させることができる。そして、第１及び第２慣性リング１４，１６の各外周面と連結リング１７の内周面との間に第１及び第２環状くさび部材１８，２０を圧入して固定するので、レーザ溶接により固定する従来に比較してそれらを固定するコストを低下させることができ、比較的コストの低いトーショナルダンパを得ることができる。
一方、第１及び第２環状くさび部材１８，２０を圧入した状態で第１及び第２慣性リング１４，１６が凸条１７ａを挟持するので、シリコーンオイルを充填するための所定の空間を確保することができ、トーショナルダンパが必要とする信頼性を確保することができる。
【０００９】
請求項２に係る発明は、請求項１に係る発明であって、第１及び第２環状弾性部材１２，１３はそれぞれ大径部１２ａ，１３ａが第１及び第２慣性リング１４，１６の各内周面に接着され、大径部１２ａ，１３ａより小径に形成された小径部１２ｂ，１３ｂがダンパ本体１１の両面に接着されたトーショナルダンパである。
この請求項２に係るトーショナルダンパでは、第１及び第２環状弾性部材１２，１３が大径部１２ａ，１３ａと小径部１２ｂ，１３ｂを有することにより、それらの弾性変形量を拡大することができ、連結リング１７を第１及び第２慣性リング１４，１６に嵌入する作業を容易にする。
【００１０】
請求項３に係る発明は、請求項１又は２に係る発明であって、連結リング１７に対向する第１及び第２慣性リング１４，１６の幅方向内側部に大径外周面１４ａ，１６ａが、幅方向外側部に大径外周面１４ａ，１６ａより小径の小径外周面１４ｂ，１６ｂがそれぞれ形成され、小径外周面１４ｂ，１６ｂから大径外周面１４ａ，１６ａにかけて傾斜外周面１４ｃ，１６ｃが形成され、傾斜外周面１４ｃ，１６ｃに対向する連結リング１７の全内周面に第１及び第２凹溝１７ｂ，１７ｃが形成され、第１及び第２慣性リングの小径外周面１４ｂ，１６ｂと連結リング１７の内周面との間に圧入された第１及び第２環状くさび部材１８，２０の圧入先端が傾斜外周面１４ｃ，１６ｃに沿って広がって第１及び第２凹溝１７ｂ，１７ｃに進入するように構成されたトーショナルダンパである。
この請求項３に係るトーショナルダンパでは、圧入されて広がった環状くさび部材１８の圧入先端が第１及び第２凹溝１７ｂ，１７ｃに進入することにより、連結リング１７から第１及び第２慣性リング１４，１６が離脱することを有効に防止することができ、シリコーンオイルが充填される空間の変化を防止してその信頼性を向上させることができる。
【００１１】
請求項４に係る発明は、請求項３に係る発明であって、第１及び第２慣性リング１４，１６が連結リング１７により連結された状態で、第１及び第２慣性リングの各小径外周面１４ｂ，１６ｂと小径外周面１４ｂ，１６ｂに対向する連結リング１７の内周面との間に第１及び第２環状くさび部材１８，２０の厚さに相当する隙間が形成されるトーショナルダンパである。
この請求項４に係るトーショナルダンパでは、小径外周面１４ｂ，１６ｂと連結リング１７の内周面との間の隙間が第１及び第２環状くさび部材１８，２０の厚さに相当するので、その隙間から第１及び第２環状くさび部材１８，２０を圧入することができ、その圧入作業を比較的容易にすることができる。
【００１２】
【発明の実施の形態】
次に本発明の実施の形態を図面に基づいて説明する。
図１及び図２に示すように、本発明のトーショナルダンパ１０は、円板状のダンパ本体１１と、そのダンパ本体１１の両面にダンパ本体１１と同軸にかつダンパ本体１１を挟むように固着された第１及び第２環状弾性部材１２，１３と、ダンパ本体１１の周縁部と間隔をあけてダンパ本体１１を挟むように第１及び第２環状弾性部材１２，１３にそれぞれ固着された第１及び第２慣性リング１４，１６と、ダンパ本体１１の周縁部と所定の間隔をあけて第１慣性リング１４の周縁部と第２慣性リング１６の周縁部とを連結する連結リング１７とを備える。
【００１３】
ダンパ本体１１は鋼板を打ち抜くことにより作られた円板であり、中央部分に図示しないクランクシャフトに取付けるための取付孔１１ａが形成される。第１及び第２慣性リング１４，１６は、ダンパ本体１１より厚い鋼板を打ち抜くことにより又は切断することにより作られた同形同大のリング状の板材であり、第１及び第２慣性リング１４，１６の各外周面は段階的に外径が異なるように成形されて大径外周面１４ａ，１６ａと小径外周面１４ｂ，１６ｂとがそれぞれ形成される。大径外周面１４ａ，１６ａと小径外周面１４ｂ，１６ｂにおける段差は後述する環状くさび部材１８の板厚と略等しくなるように形成され、大径外周面１４ａ，１６ａと小径外周面１４ｂ，１６ｂの間にはそれらを緩やかに連続させる傾斜外周面１４ｃ，１６ｃが形成される。そして、第１慣性リング１４の外径及び第２慣性リング１６の外径を形成す大径外周面１４ａ，１６ａはダンパ本体１１の外径よりもそれぞれ大きく形成される。
【００１４】
図３に示すように、第１及び第２環状弾性部材１２，１３は金型２１を用いて作られる。この金型２１は固定型２１ａと移動型２１ｂとスライド型２１ｃとを備える。円板状のダンパ本体１１と第１及び第２慣性リング１４，１６とが金型２１に装着されるけれども、第１及び第２慣性リング１４，１６はダンパ本体１１の周縁部と間隔をあけてダンパ本体１１を挟むように金型２１に装着される。この際に第１及び第２慣性リング１４，１６の各外周面における大径外周面１４ａ，１６ａをダンパ本体１１側に位置させるように第１及び第２慣性リング１４，１６が金型２１に装着される。金型２１の合成ゴム等が充填される空間は、第１及び第２慣性リング１４，１６に連通する部分が大径に形成され、ダンパ本体１１に連通する部分が小径になるように形成される。
【００１５】
固定型２１ａには金型２１の合成ゴム等が充填される空間に連通する充填孔２１ｄが設けられ、この充填孔２１ｄから合成ゴムを充填させる。ダンパ本体１１には、充填される合成ゴム等が通過する連通孔１１ｄが形成される。充填孔２１ｄから固定型２１ａの充填空間に充填された合成ゴム等はこの連通孔１１ｄを介して移動型２１ｂの充填空間にまで流入し、その後加硫することにより第１及び第２環状弾性部材１２，１３が成型される。この金型２１を用いて成型された第１及び第２環状弾性部材１２，１３を介して第１及び第２慣性リング１４，１６はダンパ本体１１に同軸に固着される。図１及び図２に戻って、金型２１の空間に合成ゴム等を充填して加硫させることにより成型された第１及び第２環状弾性部材１２，１３は、それぞれ大径部１２ａ，１３ａが第１及び第２慣性リング１４，１６の各内周面に接着され、その大径部１２ａ，１３ａより小径に形成された小径部１２ｂ，１３ｂがダンパ本体１１の両面に接着される。
【００１６】
連結リング１７は鋳物又は切削により作られ、第１及び第２慣性リング１４，１６と所定のはめあい関係を有するようにその内径が決定される。この連結リング１７の内周面全体には第１及び第２慣性リング１４，１６の互いに相対向する周縁部の間に挿入可能な凸条１７ａが形成される。第１及び第２慣性リング１４，１６がこの連結リング１７により連結された状態で、第１及び第２慣性リングの傾斜外周面１４ｃ、１６ｃに対向する凸条１７ａの両側の連結リング１７の内周面両側部全周には、第１及び第２凹溝１７ｂ，１７ｃが形成される。この連結リング１７は、第１及び第２環状弾性部材１２，１３を介してダンパ本体１１に同軸に固着された第１及び第２慣性リング１４，１６に後から嵌入され、第１及び第２慣性リング１４，１６が連結リング１７により連結された状態で、第１及び第２慣性リングの各小径外周面１４ｂ，１６ｂとこの小径外周面１４ｂ，１６ｂに対向する連結リング１７の内周面との間には、後述する第１及び第２環状くさび部材１８，２０の厚さに相当する隙間が形成される。
【００１７】
連結リング１７を嵌入させる際、連結リング１７の内周面に凸条１７ａが形成されていることから、第１及び第２慣性リング１４，１６のいずれか一方がこの凸条１７ａにより形成される内径部分を通過させる必要がある。図４に示すように、この通過させる手段としては連結リング１７を楕円状に変形させ、第１又は第２慣性リング１４，１６がその楕円の長径方向を通過するように斜めに挿入することにより、第１及び第２慣性リング１４，１６のいずれか一方を連結リング１７を通過させる。このように通過させると、通過する第１及び第２慣性リング１４，１６のいずれか一方と他方の慣性リングとの相対的な位置関係は多少変化するけれども、第１及び第２慣性リング１４，１６を連結する第１及び第２環状弾性部材１２，１３は、それぞれ大径部１２ａ，１３ａと小径部１２ｂ，１３ｂを有するので、比較的大きな変形量が確保される。
【００１８】
図１及び図２に戻って、第１及び第２慣性リング１４，１６の各外周面と連結リング１７の内周面との間に第１及び第２環状くさび部材１８，２０を圧入する。各環状くさび部材１８，２０は、第１及び第２慣性リング１４，１６の厚さに相当する幅を有する鋼帯からなるリング状部材であり、その圧入は第１及び第２慣性リング１４，１６により凸条１７ａを挟持させた状態で行われる。そして、環状くさび部材１８，２０は第１及び第２慣性リング１４，１６の小径外周面１４ｂ，１６ｂと連結リング１７の内周面との間に生じる隙間に側方から図１の矢印で示すように圧入される。このように圧入された各環状くさび部材１８，２０の圧入先端は、第１及び第２慣性リング１４，１６の小径外周面１４ｂ，１６ｂから傾斜外周面１４ｃ，１６ｃに案内されて連結リング１７の凹溝１７ｂ，１７ｃに進入し、完全に圧入された状態で各環状くさび部材１８，２０の圧入先端は広がるように変形する。このように第１及び第２慣性リング１４，１６の各外周面と連結リング１７の内周面との間に第１及び第２環状くさび部材１８，２０を圧入して凸条１７ａを挟持する第１慣性リング１４の周縁部と第２慣性リング１６の周縁部とを連結する。
【００１９】
その後、第１及び第２環状弾性部材１２，１３と第１及び第２慣性リング１４，１６と連結リング１７により囲まれるダンパ本体１１の周縁部における空間にはシリコーンオイル１９が充填され、トーショナルダンパ１０が完成される。
【００２０】
このように構成されたトーショナルダンパ１０では、第１慣性リング１４の外径及び第２慣性リング１６の外径をダンパ本体１１の外径よりそれぞれ大きく形成したので、単一の連結リング１７を用いることができ、２分割された連結リングを用いていた従来に比較して部品点数を減少させることができる。そして、第１及び第２慣性リング１４，１６の各外周面と連結リング１７の内周面との間に環状くさび部材１８，２０を圧入して固定するので、レーザ溶接により固定する従来に比較してそれらを固定するコストを低下させることができ、比較的コストの低いトーショナルダンパを得ることができる。
【００２１】
また、環状くさび部材１８，２０を圧入した状態で第１及び第２慣性リング１４，１６が凸条１７ａを挟持するので、シリコーンオイルを充填するための所定の空間を確保することができる。特にこの実施の形態では、圧入された環状くさび部材１８，２０の圧入先端を広がるように変形させて凹溝１７ｂ，１７ｃに進入させるので、その広がった環状くさび部材１８，２０の圧入先端により、連結リング１７から第１及び第２慣性リング１４，１６が離脱することを有効に防止することができる。この結果、シリコーンオイルが充填される空間の変化を防止してその信頼性を向上させることができる。
【００２２】
【発明の効果】
以上述べたように、本発明によれば、第１慣性リングの外径及び第２慣性リングの外径をダンパ本体の外径よりそれぞれ大きく形成したので、単一の連結リングを用いることにより部品点数を減少させることができる。そして、第１及び第２慣性リングの各外周面と連結リングの内周面との間に環状くさび部材を圧入して固定するので、従来に比較してそれらを固定するコストを低下させることができ、比較的コストの低いトーショナルダンパを得ることができる。
【００２３】
また、環状くさび部材を圧入した状態で第１及び第２慣性リングにより凸条を挟持させるので、シリコーンオイルを充填するための所定の空間を確保することができ、圧入された環状くさび部材の圧入先端を広がるように変形させて凹溝に進入させれば、その広がった圧入先端により、連結リングから第１及び第２慣性リングが離脱することを有効に防止することができる。この結果、シリコーンオイルが充填される空間の変化を防止してその信頼性を向上させることができる。
【００２４】
一方、連結リングを第１及び第２慣性リングに嵌入させる際に第１及び第２慣性リングは相対的に移動させる必要があるけれども、第１及び第２環状弾性部材に大径部と小径部を形成すれば、それらの弾性変形量を拡大することができ、連結リングを第１及び第２慣性リングに嵌入する作業を容易にすることができる。
【図面の簡単な説明】
【図１】本発明の実施の形態におけるトーショナルダンパを示す断面図。
【図２】そのダンパの構造を示す分解斜視図。
【図３】その環状弾性部材を成型する金型の断面構成図。
【図４】その連結リングを変形させて慣性リングを挿通させる状態を示す斜視図。
【図５】従来のトーショナルダンパを示す図１に対応する断面図。
【図６】従来の環状弾性部材を成型する金型の断面構成図。
【符号の説明】
１０ トーショナルダンパ
１１ ダンパ本体
１２ 第１環状弾性部材
１２ａ 大径部
１２ｂ 小径部
１３ 第２環状弾性部材
１３ａ 大径部
１３ｂ 小径部
１４ 第１慣性リング
１４ａ 大径外周面
１４ｂ 小径外周面
１４ｃ 傾斜外周面
１６ 第２慣性リング
１６ａ 大径外周面
１６ｂ 小径外周面
１６ｃ 傾斜外周面
１７ 連結リング
１７ａ 凸条
１７ｂ 第１凹溝
１７ｃ 第２凹溝
１８，２０ 環状くさび部材
２１ 金型[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a torsional damper provided at an end of a crankshaft or the like, which reduces torsional vibration of the crankshaft or the like, thereby reducing engine vibration and noise, and a method of manufacturing the same.
[0002]
[Prior art]
Conventionally, it has been known to attach a torsional damper to a crankshaft or the like in order to reduce vibration and noise of an engine. As shown in FIG. 5, the torsion damper includes a disc-shaped damper body 1 and first and second coaxially fixed to both surfaces of the damper body 1 so as to be coaxial with the damper body 1 and sandwich the damper body 1. First and second inertia fixed to the first and second annular elastic members 2 and 3, respectively, so as to sandwich the damper body 1 with a gap between the second annular elastic members 2 and 3 and the periphery of the damper body 1. Rings 4, 6 and a connecting ring 7 for connecting the peripheral edge of the first inertial ring 4 and the peripheral edge of the second inertial ring 6 at a predetermined distance from the peripheral edge of the damper main body 1; A silicone oil 8 is filled in a space at a peripheral portion of the damper body 1 surrounded by the second annular elastic members 2 and 3, the first and second inertia rings 4 and 6, and the connection ring 7 (for example, see Patent Document 1). .). Then, the damper body 1 is attached to the crankshaft or the like, and the torsional vibration of the crankshaft or the like is buffered by the shear stress of the silicone oil 8 generated between the first and second inertia rings 4 and 6 and the damper body 1. ing.
[0003]
As shown in FIG. 6, the first and second annular elastic members 2 and 3 in the conventional torsion damper are made using a mold 9. The mold 9 has a split mold structure to secure a space filled with the silicone oil 8, and includes a slide mold 9c in addition to the fixed mold 9a and the movable mold 9b. The first and second inertial rings 4 and 6 are mounted on the mold 9 together with the damper body 1 so as to be spaced apart from the peripheral edge of the damper body 1, and the mold 9 is filled with synthetic rubber and vulcanized. The first and second annular elastic members 2 and 3 are molded by filling and vulcanizing the synthetic rubber using the mold 9, and the first and second annular elastic members 2 and 3 are formed via the first and second annular elastic members 2 and 3. The two inertia rings 4 and 6 are fixed to the damper body 1. Returning to FIG. 5, the connection ring 7 is a separate member, and is later fitted into the first and second inertia rings 4, 6. Then, in order to prevent the first and second annular elastic members 2 and 3 from being broken by heat, the connecting ring 7 is welded to the first and second inertial rings 4 and 6 by laser welding.
[0004]
[Patent Document 1]
Japanese Utility Model Laid-Open No. 4-50746 [0005]
[Problems to be solved by the invention]
However, since laser welding requires predetermined equipment and its cost is relatively high, the conventional torsion damper for welding the connecting ring 7 to the first and second inertial rings 4 and 6 by laser welding is not available. , There was a problem that the unit price was pushed up. In particular, since the outer diameters of the first and second inertial rings 4 and 6 in the conventional torsion damper are formed smaller than the outer diameter of the damper body 1, the connecting ring 7 itself is also divided into two parts, and the first inertial ring 4 The first connecting ring 7a welded to the peripheral portion of the damper body 1 and the second connecting ring 7b welded to the peripheral portion of the second inertia ring 6 are further laser-welded to leave a predetermined distance from the peripheral edge of the damper body 1. Thus, the periphery of the first inertia ring 4 and the periphery of the second inertia ring 6 are connected. For this reason, the number of parts increases and the number of welding steps further increases, and there is a problem that the unit price of the torsional damper is significantly increased.
An object of the present invention is to provide a torsional damper with relatively low cost and high reliability, and a method of manufacturing the same.
[0006]
[Means for Solving the Problems]
As shown in FIG. 1, the invention according to claim 1 has a disk-shaped damper body 11, and first and second disc-shaped damper bodies 11 fixed to both surfaces coaxially with the damper body 11 so as to sandwich the damper body 11. First and second inertia fixed to the second annular elastic members 12, 13 and the first and second annular elastic members 12, 13 respectively so as to sandwich the damper body 11 with an interval from the periphery of the damper body 11. An improved torsion damper comprising rings 14, 16 and a connecting ring 17 for connecting the peripheral portion of the first inertial ring 14 and the peripheral portion of the second inertial ring 16 at a distance from the peripheral portion of the damper body 11. It is.
The characteristic configuration is that the outer diameter of the first inertia ring 14 and the outer diameter of the second inertia ring 16 are each formed larger than the outer diameter of the damper body 11, and the first and second A projecting ridge 17a is formed between the peripheral edges of the inertia rings 14, 16 which are opposed to each other, and is formed between the outer peripheral surfaces of the first and second inertial rings 14, 16 and the inner peripheral surface of the connection ring 17. The first and second annular wedge members 18 and 20 are press-fitted by the first and second inertial rings 14 and 16 so as to sandwich the ridge 17a.
[0007]
The invention according to claim 5 further comprises, as shown in FIG. 3, a disk-shaped damper body 11 and first and second inertia rings 14 and 16 having outer diameters larger than the outer diameter of the damper body 11. Attaching the first and second inertia rings 14 and 16 to the mold 21 so as to sandwich the damper body 11 with a gap from the peripheral edge of the damper body 11, and filling and curing the mold 21 with synthetic rubber. The large-diameter portions 12a and 13a are bonded to the inner peripheral surfaces of the first and second inertia rings 14 and 16, respectively, and the small-diameter portions 12b and 13b formed to have smaller diameters than the large-diameter portions 12a and 13a are attached to both surfaces of the damper body 11. Molding the first and second annular elastic members 12 and 13 so as to adhere to the first and second inertia rings 14 and 16 attached to both surfaces of the damper body 11 via the annular elastic members 12 and 13. Between the peripheral edges of each other A step of fitting the connecting ring 17 formed on the inner peripheral surface of the inner peripheral surface and covering the peripheral edge of the damper body 11 with a predetermined gap into the first and second inertia rings 14 and 16; An annular wedge member 18 is press-fitted between the outer peripheral surface of each of the second inertia rings 14 and 16 and the inner peripheral surface of the connection ring 17 so that the first and second inertial rings 14 and 16 sandwich the ridge 17a. And a method for manufacturing a torsional damper.
[0008]
In the torsion damper according to the first aspect and the method for manufacturing a torsion damper according to the fifth aspect, the outer diameter of the first inertia ring and the outer diameter of the second inertia ring are larger than the outer diameter of the damper body. Since it is formed, a single connecting ring 17 can be used, and the number of parts can be reduced as compared with the conventional case using a connecting ring divided into two. The first and second annular wedge members 18 and 20 are press-fitted and fixed between the outer peripheral surfaces of the first and second inertia rings 14 and 16 and the inner peripheral surface of the connection ring 17, so that laser welding is performed. The cost of fixing them can be reduced as compared with the conventional fixing, and a relatively low-cost torsional damper can be obtained.
On the other hand, since the first and second inertia rings 14 and 16 sandwich the ridge 17a with the first and second annular wedge members 18 and 20 being press-fitted, a predetermined space for filling the silicone oil is secured. Therefore, the reliability required by the torsional damper can be secured.
[0009]
The invention according to claim 2 is the invention according to claim 1, wherein the first and second annular elastic members 12, 13 have large-diameter portions 12a, 13a, respectively, of the first and second inertia rings 14, 16, respectively. A torsion damper in which small-diameter portions 12b and 13b, which are bonded to the inner peripheral surface and have a smaller diameter than the large-diameter portions 12a and 13a, are bonded to both surfaces of the damper body 11.
In the torsion damper according to the second aspect, since the first and second annular elastic members 12, 13 have the large diameter portions 12a, 13a and the small diameter portions 12b, 13b, the amount of elastic deformation thereof can be increased. This facilitates the work of fitting the connecting ring 17 into the first and second inertia rings 14 and 16.
[0010]
The invention according to claim 3 is the invention according to claim 1 or 2, wherein large-diameter outer peripheral surfaces 14a, 16a are provided on inner sides in the width direction of the first and second inertial rings 14, 16 facing the connecting ring 17. On the outer side in the width direction, small-diameter outer peripheral surfaces 14b, 16b each having a smaller diameter than the large-diameter outer peripheral surfaces 14a, 16a are formed, and inclined outer peripheral surfaces 14c, 16c are formed from the small-diameter outer peripheral surfaces 14b, 16b to the large-diameter outer peripheral surfaces 14a, 16a. The first and second concave grooves 17b and 17c are formed on the entire inner peripheral surface of the connection ring 17 facing the inclined outer peripheral surfaces 14c and 16c, and are connected to the small-diameter outer peripheral surfaces 14b and 16b of the first and second inertial rings. The press-fitting tips of the first and second annular wedge members 18 and 20 press-fitted to the inner peripheral surface of the ring 17 spread along the inclined outer peripheral surfaces 14c and 16c to be inserted into the first and second concave grooves 17b and 17c. I will enter A torsional damper that is configured.
In the torsion damper according to the third aspect, the first and second inertia from the connection ring 17 are formed by the press-fitted and widened annular wedge member 18 having the press-fitting leading ends entering the first and second concave grooves 17b and 17c. The rings 14 and 16 can be effectively prevented from coming off, and the space filled with the silicone oil can be prevented from changing, so that the reliability can be improved.
[0011]
The invention according to claim 4 is the invention according to claim 3, wherein the first and second inertial rings 14 and 16 are connected to each other by the connecting ring 17 while the small-diameter outer periphery of each of the first and second inertial rings. A torsional damper in which a gap corresponding to the thickness of the first and second annular wedge members 18, 20 is formed between the surfaces 14b, 16b and the inner peripheral surface of the connecting ring 17 facing the small-diameter outer peripheral surfaces 14b, 16b. It is.
In the torsion damper according to the fourth aspect, the gap between the small-diameter outer peripheral surfaces 14b, 16b and the inner peripheral surface of the connection ring 17 corresponds to the thickness of the first and second annular wedge members 18, 20. The first and second annular wedge members 18 and 20 can be press-fitted from the gap, and the press-fitting operation can be relatively easily performed.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, a torsion damper 10 of the present invention is fixed to a disk-shaped damper main body 11, and to both surfaces of the damper main body 11 so as to be coaxial with the damper main body 11 and sandwich the damper main body 11. The first and second annular elastic members 12, 13 fixed to the first and second annular elastic members 12, 13 so as to sandwich the damper body 11 at a distance from the periphery of the damper body 11. The first and second inertial rings 14 and 16 and a connecting ring 17 that connects the peripheral edge of the first inertial ring 14 and the peripheral edge of the second inertial ring 16 at a predetermined distance from the peripheral edge of the damper body 11. Prepare.
[0013]
The damper main body 11 is a disk made by stamping a steel plate, and has a mounting hole 11a formed in a central portion for mounting on a crankshaft (not shown). The first and second inertia rings 14 and 16 are ring-shaped plate members of the same shape and the same size made by punching or cutting a steel plate thicker than the damper body 11. , 16 are formed so that the outer diameters are gradually changed so as to form large-diameter outer surfaces 14a, 16a and small-diameter outer surfaces 14b, 16b, respectively. The step between the large-diameter outer peripheral surfaces 14a, 16a and the small-diameter outer peripheral surfaces 14b, 16b is formed so as to be substantially equal to the plate thickness of an annular wedge member 18 to be described later, and the large-diameter outer peripheral surfaces 14a, 16a and the small-diameter outer peripheral surfaces 14b, 16b are formed. The inclined outer peripheral surfaces 14c and 16c are formed between them so that they are gently continued. The large-diameter outer peripheral surfaces 14 a and 16 a forming the outer diameter of the first inertia ring 14 and the outer diameter of the second inertia ring 16 are formed to be larger than the outer diameter of the damper body 11.
[0014]
As shown in FIG. 3, the first and second annular elastic members 12 and 13 are made using a mold 21. The mold 21 includes a fixed mold 21a, a movable mold 21b, and a slide mold 21c. Although the disk-shaped damper body 11 and the first and second inertia rings 14 and 16 are mounted on the mold 21, the first and second inertia rings 14 and 16 are spaced apart from the peripheral edge of the damper body 11. And is mounted on the mold 21 so as to sandwich the damper body 11. At this time, the first and second inertia rings 14 and 16 are attached to the mold 21 such that the large-diameter outer peripheral surfaces 14a and 16a of the respective outer peripheral surfaces of the first and second inertia rings 14 and 16 are positioned on the damper main body 11 side. Be attached. The space of the mold 21 filled with the synthetic rubber or the like is formed such that a portion communicating with the first and second inertia rings 14 and 16 has a large diameter and a portion communicating with the damper body 11 has a small diameter. You.
[0015]
The fixed mold 21a is provided with a filling hole 21d communicating with a space of the mold 21 filled with the synthetic rubber or the like, and the synthetic rubber is filled from the filling hole 21d. The damper body 11 has a communication hole 11d through which the synthetic rubber or the like to be filled passes. Synthetic rubber or the like filled in the filling space of the fixed mold 21a from the filling hole 21d flows into the filling space of the movable mold 21b through the communication hole 11d, and is then vulcanized to thereby form the first and second annular elastic members. 12 and 13 are molded. The first and second inertia rings 14 and 16 are coaxially fixed to the damper body 11 via the first and second annular elastic members 12 and 13 molded using the mold 21. Returning to FIGS. 1 and 2, the first and second annular elastic members 12 and 13 molded by filling the space of the mold 21 with synthetic rubber or the like and vulcanizing them are large diameter portions 12a and 13a, respectively. Are adhered to the inner peripheral surfaces of the first and second inertia rings 14 and 16, and small-diameter portions 12 b and 13 b formed to have smaller diameters than the large-diameter portions 12 a and 13 a are adhered to both surfaces of the damper main body 11.
[0016]
The connecting ring 17 is made by casting or cutting, and its inner diameter is determined so as to have a predetermined fitting relationship with the first and second inertial rings 14 and 16. A projecting ridge 17a is formed on the entire inner peripheral surface of the connecting ring 17 so as to be inserted between the peripheral edges of the first and second inertial rings 14 and 16 facing each other. In a state where the first and second inertia rings 14 and 16 are connected by the connection ring 17, the connection rings 17 on both sides of the ridge 17a opposed to the inclined outer peripheral surfaces 14c and 16c of the first and second inertia rings. First and second concave grooves 17b and 17c are formed on the entire periphery of both sides of the peripheral surface. The connecting ring 17 is later fitted into first and second inertia rings 14 and 16 coaxially fixed to the damper body 11 via first and second annular elastic members 12 and 13, and the first and second rings are provided. In a state where the inertia rings 14 and 16 are connected by the connection ring 17, the small-diameter outer peripheral surfaces 14b and 16b of the first and second inertia rings and the inner peripheral surface of the connection ring 17 opposed to the small-diameter outer surfaces 14b and 16b are connected. A gap corresponding to the thickness of the first and second annular wedge members 18 and 20 described below is formed between them.
[0017]
When the connection ring 17 is fitted, since one of the first and second inertia rings 14 and 16 is formed by the ridge 17a, the ridge 17a is formed on the inner peripheral surface of the connection ring 17. It is necessary to pass through the inner diameter part. As shown in FIG. 4, the passing means is such that the connecting ring 17 is deformed into an elliptical shape, and the first or second inertial rings 14, 16 are inserted obliquely so as to pass through the major axis direction of the ellipse. , One of the first and second inertial rings 14 and 16 is passed through the connecting ring 17. When the first and second inertial rings 14 and 16 pass through in this manner, the relative positional relationship between one of the first and second inertial rings 14 and 16 and the other inertial ring slightly changes, but the first and second inertial rings 14 and 16 do not. The first and second annular elastic members 12 and 13 connecting the first and second elastic members 16 have large diameter portions 12a and 13a and small diameter portions 12b and 13b, respectively, so that a relatively large deformation amount is secured.
[0018]
Returning to FIGS. 1 and 2, the first and second annular wedge members 18 and 20 are press-fitted between the outer peripheral surfaces of the first and second inertial rings 14 and 16 and the inner peripheral surface of the connection ring 17. Each of the annular wedge members 18 and 20 is a ring-shaped member made of a steel strip having a width corresponding to the thickness of the first and second inertial rings 14 and 16, and is press-fitted into the first and second inertial rings 14 and 16. This is performed in a state where the ridges 17a are sandwiched by 16. Further, the annular wedge members 18 and 20 are indicated by arrows in FIG. 1 from the side in gaps formed between the small diameter outer peripheral surfaces 14b and 16b of the first and second inertia rings 14 and 16 and the inner peripheral surface of the connecting ring 17. Press fit. The press-fitting tips of the annular wedge members 18 and 20 press-fitted as described above are guided from the small-diameter outer peripheral surfaces 14b and 16b of the first and second inertia rings 14 and 16 to the inclined outer peripheral surfaces 14c and 16c, so that the connection ring 17 is formed. Each of the annular wedge members 18 and 20 is deformed so as to enter the concave grooves 17b and 17c and expand the press-fitting tips of the respective annular wedge members 18 and 20 in a state of being completely press-fitted. As described above, the first and second annular wedge members 18 and 20 are press-fitted between the outer peripheral surfaces of the first and second inertia rings 14 and 16 and the inner peripheral surface of the connection ring 17 to clamp the ridge 17a. The periphery of the first inertia ring 14 and the periphery of the second inertia ring 16 are connected.
[0019]
Thereafter, the space around the periphery of the damper body 11 surrounded by the first and second annular elastic members 12 and 13, the first and second inertia rings 14 and 16, and the connection ring 17 is filled with a silicone oil 19, and the torsion is applied. The damper 10 is completed.
[0020]
In the torsion damper 10 configured as described above, since the outer diameter of the first inertia ring 14 and the outer diameter of the second inertia ring 16 are each formed larger than the outer diameter of the damper body 11, the single connection ring 17 is formed. It can be used, and the number of parts can be reduced as compared with the related art in which the connecting ring divided into two is used. Since the annular wedge members 18 and 20 are press-fitted between the outer peripheral surfaces of the first and second inertia rings 14 and 16 and the inner peripheral surface of the connection ring 17, they are fixed compared with the conventional method in which they are fixed by laser welding. Thus, the cost of fixing them can be reduced, and a relatively low-cost torsional damper can be obtained.
[0021]
In addition, since the first and second inertial rings 14 and 16 sandwich the ridge 17a with the annular wedge members 18 and 20 being press-fitted, a predetermined space for filling the silicone oil can be secured. Particularly, in this embodiment, since the press-fitting tips of the press-fitted annular wedge members 18 and 20 are deformed so as to expand and enter the concave grooves 17b and 17c, the press-fitting tips of the expanded ring-shaped wedge members 18 and 20 provide: It is possible to effectively prevent the first and second inertia rings 14 and 16 from being detached from the connection ring 17. As a result, it is possible to prevent a change in the space filled with the silicone oil and improve the reliability thereof.
[0022]
【The invention's effect】
As described above, according to the present invention, since the outer diameter of the first inertia ring and the outer diameter of the second inertia ring are formed to be larger than the outer diameter of the damper body, the parts can be formed by using a single connection ring. The score can be reduced. Further, since the annular wedge member is press-fitted between each outer peripheral surface of the first and second inertia rings and the inner peripheral surface of the connection ring, the cost for fixing them can be reduced as compared with the related art. As a result, a relatively low-cost torsional damper can be obtained.
[0023]
Further, since the convex wedge is held between the first and second inertia rings in a state where the annular wedge member is press-fitted, a predetermined space for filling the silicone oil can be secured, and the press-fitted annular wedge member is press-fitted. If the distal end is deformed so as to spread and enters the concave groove, it is possible to effectively prevent the first and second inertia rings from being detached from the connecting ring by the expanded press-fitting distal end. As a result, it is possible to prevent a change in the space filled with the silicone oil and improve the reliability thereof.
[0024]
On the other hand, when the connecting ring is fitted into the first and second inertial rings, the first and second inertial rings need to be relatively moved, but the first and second annular elastic members have a large diameter portion and a small diameter portion. By forming, the amount of elastic deformation thereof can be increased, and the work of fitting the connection ring into the first and second inertia rings can be facilitated.
[Brief description of the drawings]
FIG. 1 is a sectional view showing a torsional damper according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view showing the structure of the damper.
FIG. 3 is a sectional configuration diagram of a mold for molding the annular elastic member.
FIG. 4 is a perspective view showing a state in which an inertia ring is inserted by deforming the connection ring.
FIG. 5 is a sectional view corresponding to FIG. 1 showing a conventional torsional damper.
FIG. 6 is a sectional configuration diagram of a mold for molding a conventional annular elastic member.
[Explanation of symbols]
Reference Signs List 10 Torsion damper 11 Damper main body 12 First annular elastic member 12a Large diameter portion 12b Small diameter portion 13 Second annular elastic member 13a Large diameter portion 13b Small diameter portion 14 First inertia ring 14a Large diameter outer peripheral surface 14b Small diameter outer peripheral surface 14c Inclined outer periphery Surface 16 Second inertia ring 16a Large-diameter outer peripheral surface 16b Small-diameter outer peripheral surface 16c Inclined outer peripheral surface 17 Connecting ring 17a Projected ridge 17b First concave groove 17c Second concave groove 18, 20 Annular wedge member 21 Mold

Claims (5)

円板状のダンパ本体（１１）と、前記ダンパ本体（１１）の両面に前記ダンパ本体（１１）と同軸にかつ前記ダンパ本体（１１）を挟むように固着された第１及び第２環状弾性部材（１２，１３）と、前記ダンパ本体（１１）の周縁部と間隔をあけて前記ダンパ本体（１１）を挟むように前記第１及び第２環状弾性部材（１２，１３）にそれぞれ固着された第１及び第２慣性リング（１４，１６）と、前記ダンパ本体（１１）の周縁部と間隔をあけて前記第１慣性リング（１４）の周縁部と前記第２慣性リング（１６）の周縁部とを連結する連結リング（１７）とを備えたトーショナルダンパにおいて、
前記第１慣性リング（１４）の外径及び前記第２慣性リング（１６）の外径が前記ダンパ本体（１１）の外径よりそれぞれ大きく形成され、
前記連結リング（１７）の内周面全体に前記第１及び第２慣性リング（１４，１６）の互いに相対向する周縁部の間に挿入可能な凸条（１７ａ）が形成され、
前記第１及び第２慣性リング（１４，１６）の各外周面と前記連結リング（１７）の内周面との間に第１及び第２環状くさび部材（１８，２０）が前記第１及び第２慣性リング（１４，１６）により前記凸条（１７ａ）を挟持するようにそれぞれ圧入された
ことを特徴とするトーショナルダンパ。A disk-shaped damper body (11); and first and second annular elastic members fixed to both surfaces of the damper body (11) so as to be coaxial with the damper body (11) and sandwich the damper body (11). A member (12, 13) is fixed to the first and second annular elastic members (12, 13) so as to sandwich the damper body (11) at an interval from a peripheral portion of the damper body (11). The first and second inertia rings (14, 16) and the periphery of the first inertia ring (14) and the second inertia ring (16) are spaced from the periphery of the damper body (11). A torsion damper provided with a connection ring (17) for connecting to a peripheral portion;
The outer diameter of the first inertia ring (14) and the outer diameter of the second inertia ring (16) are each formed larger than the outer diameter of the damper body (11),
A ridge (17a) that can be inserted between the opposing peripheral portions of the first and second inertial rings (14, 16) is formed on the entire inner peripheral surface of the connection ring (17),
First and second annular wedge members (18, 20) are provided between the outer peripheral surfaces of the first and second inertial rings (14, 16) and the inner peripheral surface of the connection ring (17). A torsion damper characterized by being press-fitted so as to sandwich the ridge (17a) by second inertia rings (14, 16). 第１及び第２環状弾性部材（１２，１３）はそれぞれ大径部（１２ａ，１３ａ）が第１及び第２慣性リング（１４，１６）の各内周面に接着され、前記大径部（１２ａ，１３ａ）より小径に形成された小径部（１２ｂ，１３ｂ）がダンパ本体（１１）の両面に接着された請求項１記載のトーショナルダンパ。Each of the first and second annular elastic members (12, 13) has a large-diameter portion (12a, 13a) bonded to the inner peripheral surface of each of the first and second inertial rings (14, 16). The torsion damper according to claim 1, wherein the small diameter portions (12b, 13b) formed smaller in diameter than the diameters (12a, 13a) are bonded to both surfaces of the damper body (11). 連結リング（１７）に対向する第１及び第２慣性リング（１４，１６）の幅方向内側部に大径外周面（１４ａ，１６ａ）が、幅方向外側部に前記大径外周面（１４ａ，１６ａ）より小径の小径外周面（１４ｂ，１６ｂ）がそれぞれ形成され、前記小径外周面（１４ｂ，１６ｂ）から前記大径外周面（１４ａ，１６ａ）にかけて傾斜外周面（１４ｃ，１６ｃ）が形成され、前記傾斜外周面（１４ｃ，１６ｃ）に対向する前記連結リング（１７）の全内周面に第１及び第２凹溝（１７ｂ，１７ｃ）が形成され、前記第１及び第２慣性リングの小径外周面（１４ｂ，１６ｂ）と前記連結リング（１７）の内周面との間に圧入された第１及び第２環状くさび部材（１８，２０）の圧入先端が前記傾斜外周面（１４ｃ，１６ｃ）に沿って広がって前記第１及び第２凹溝（１７ｂ，１７ｃ）に進入するように構成された請求項１又は２記載のトーショナルダンパ。The large-diameter outer peripheral surfaces (14a, 16a) are provided on the width-direction inner portions of the first and second inertia rings (14, 16) facing the connecting ring (17), and the large-diameter outer peripheral surfaces (14a, 16a) are provided on the width-direction outer portions. 16a), small-diameter outer peripheral surfaces (14b, 16b) each having a smaller diameter are formed, and inclined outer peripheral surfaces (14c, 16c) are formed from the small-diameter outer peripheral surfaces (14b, 16b) to the large-diameter outer peripheral surfaces (14a, 16a). First and second concave grooves (17b, 17c) are formed on the entire inner peripheral surface of the connection ring (17) facing the inclined outer peripheral surfaces (14c, 16c). The press-fitting tips of the first and second annular wedge members (18, 20) press-fitted between the small-diameter outer peripheral surfaces (14b, 16b) and the inner peripheral surface of the connecting ring (17) are connected to the inclined outer peripheral surfaces (14c, 14c). 16c) extending along the And second grooves (17b, 17c) configured claim 1 or 2 torsional damper according to enter the. 第１及び第２慣性リング（１４，１６）が連結リング（１７）により連結された状態で、前記第１及び第２慣性リングの各小径外周面（１４ｂ，１６ｂ）と前記小径外周面（１４ｂ，１６ｂ）に対向する前記連結リング（１７）の内周面との間に第１及び第２環状くさび部材（１８，２０）の厚さに相当する隙間が形成される請求項３記載のトーショナルダンパ。In a state where the first and second inertial rings (14, 16) are connected by the connecting ring (17), each of the small-diameter outer peripheral surfaces (14b, 16b) of the first and second inertial rings and the small-diameter outer peripheral surface (14b). 4. A toe according to claim 3, wherein a gap corresponding to the thickness of the first and second annular wedge members (18, 20) is formed between the connecting ring (17) and the inner peripheral surface facing the connecting ring (17). Shonal damper. 円板状のダンパ本体（１１）と外径が前記ダンパ本体（１１）の外径より大きく形成された第１及び第２慣性リング（１４，１６）とを前記第１及び第２慣性リング（１４，１６）が前記ダンパ本体（１１）の周縁部と間隔をあけて前記ダンパ本体（１１）を挟むように金型（２１）に装着する工程と、
前記金型（２１）に合成ゴムを充填加硫させてそれぞれ大径部（１２ａ，１３ａ）を第１及び第２慣性リング（１４，１６）の各内周面に接着しかつ前記大径部（１２ａ，１３ａ）より小径に形成された小径部（１２ｂ，１３ｂ）をダンパ本体（１１）の両面に接着するように第１及び第２環状弾性部材（１２，１３）を成型する工程と、
前記ダンパ本体（１１）の両面に前記環状弾性部材（１２，１３）を介して取付けられた第１及び第２慣性リング（１４，１６）の互いに相対向する周縁部の間に挿入可能な凸条（１７ａ）が内周面に形成されかつ前記ダンパ本体（１１）の周縁部と所定の隙間をあけて覆う連結リング（１７）を前記第１及び第２慣性リング（１４，１６）に嵌入する工程と、
前記第１及び第２慣性リング（１４，１６）の各外周面と前記連結リング（１７）の内周面との間に環状くさび部材（１８）をそれぞれ圧入して前記第１及び第２慣性リング（１４，１６）により前記凸条（１７ａ）を挟持させる工程と
を含むトーショナルダンパの製造方法。The disk-shaped damper main body (11) and the first and second inertial rings (14, 16) whose outer diameters are larger than the outer diameter of the damper main body (11) are combined with the first and second inertial rings (14, 16). (14, 16) to be mounted on the mold (21) so as to sandwich the damper body (11) at a distance from the periphery of the damper body (11);
The mold (21) is filled with synthetic rubber and vulcanized to bond the large-diameter portions (12a, 13a) to the respective inner peripheral surfaces of the first and second inertia rings (14, 16), respectively. Molding the first and second annular elastic members (12, 13) so that the small diameter portions (12b, 13b) formed smaller in diameter than (12a, 13a) are bonded to both surfaces of the damper body (11);
A convex that can be inserted between opposing peripheral portions of first and second inertia rings (14, 16) attached to both surfaces of the damper body (11) via the annular elastic members (12, 13). A connecting ring (17) formed on the inner peripheral surface of the connecting ring (17a) and covering the peripheral portion of the damper body (11) with a predetermined gap is fitted into the first and second inertia rings (14, 16). The process of
An annular wedge member (18) is press-fitted between each outer peripheral surface of the first and second inertial rings (14, 16) and the inner peripheral surface of the connection ring (17), respectively, to thereby form the first and second inertia rings. A step of clamping the ridge (17a) with the rings (14, 16).
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Publication number Priority date Publication date Assignee Title
JP2008057582A (en) * 2006-08-29 2008-03-13 Bridgestone Corp Torsional damper
KR20200003447A (en) * 2018-07-02 2020-01-10 한국후꼬꾸 주식회사 Damper pulley and Combining device of trigger plate for thereof

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JPS58130150U (en) * 1982-02-27 1983-09-02 冨士自動車興業株式会社 damper
JPS58200831A (en) * 1982-05-14 1983-11-22 Hideo Aoki Manufacture of damper for preventing twisting vibration
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JPH10103409A (en) * 1996-09-27 1998-04-21 Nok Megurasutikku Kk Torsional damper
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JP2002188690A (en) * 2000-12-22 2002-07-05 Hino Motors Ltd Torsional damper for engine

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JPS58130150U (en) * 1982-02-27 1983-09-02 冨士自動車興業株式会社 damper
JPS58200831A (en) * 1982-05-14 1983-11-22 Hideo Aoki Manufacture of damper for preventing twisting vibration
JPS61146644U (en) * 1985-03-05 1986-09-10
JPS63264226A (en) * 1987-04-01 1988-11-01 ゼネラル・モータース・コーポレーション Automatic crimp type connecting structure for connecting internal member and external member and method of assembling these member
JPH0388047U (en) * 1989-12-25 1991-09-09
JPH0450746U (en) * 1990-09-04 1992-04-28
JPH08285013A (en) * 1995-04-14 1996-11-01 Nok Megurasutikku Kk Damper
JPH10103409A (en) * 1996-09-27 1998-04-21 Nok Megurasutikku Kk Torsional damper
JP2001165243A (en) * 1999-12-09 2001-06-19 Fuji Jidosha Kogyo Kk Torsional vibration buffer for internal combastion engine and method of manufacturing therefor
JP2002188690A (en) * 2000-12-22 2002-07-05 Hino Motors Ltd Torsional damper for engine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008057582A (en) * 2006-08-29 2008-03-13 Bridgestone Corp Torsional damper
KR20200003447A (en) * 2018-07-02 2020-01-10 한국후꼬꾸 주식회사 Damper pulley and Combining device of trigger plate for thereof
KR102078919B1 (en) * 2018-07-02 2020-02-19 한국후꼬꾸 주식회사 Damper pulley and Combining device of trigger plate for thereof

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