JP2010281460A - Dynamic damper - Google Patents
Dynamic damper Download PDFInfo
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- JP2010281460A JP2010281460A JP2010218468A JP2010218468A JP2010281460A JP 2010281460 A JP2010281460 A JP 2010281460A JP 2010218468 A JP2010218468 A JP 2010218468A JP 2010218468 A JP2010218468 A JP 2010218468A JP 2010281460 A JP2010281460 A JP 2010281460A
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- metal fitting
- mass member
- inner metal
- elastic body
- rubber elastic
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Abstract
Description
本発明は、防振、防音を目的として自動車に取り付けられるダイナミックダンパーに関するものである。 The present invention relates to a dynamic damper attached to an automobile for the purpose of vibration and sound insulation.
自動車の足廻り等には、車輪等の振動が車体に伝達されるのを防止するためにダイナミックダンパーが取り付けられている。この種のダイナミックダンパーは、保持金具にマス部材をゴム弾性体を介して宙吊り状態で取り付けているものであるが、自動車に入力される振動の振動数は検証できることから、ゴム弾性体のばね特性とマス部材の質量特性とを調整してマス部材を振動振動数に共振させることで防振している。これにおいて、ゴム弾性体のばね特性を安定的に現出させるためには、ゴム弾性体をある程度圧縮させた初期状態に設定しておく必要がある。加えて、この圧縮の程度によってばね定数は変わってくるから、所望のばね定数を得るためにも、圧縮の程度は調整できる必要がある。 Dynamic dampers are attached to the undercarriages of automobiles in order to prevent vibrations of wheels and the like from being transmitted to the vehicle body. This type of dynamic damper has a mass member attached to a holding bracket in a suspended state via a rubber elastic body, but since the frequency of vibration input to the automobile can be verified, the spring characteristics of the rubber elastic body And the mass characteristics of the mass member are adjusted to resonate the mass member at the vibration frequency to prevent vibration. In this case, in order to stably exhibit the spring characteristics of the rubber elastic body, it is necessary to set the rubber elastic body to an initial state in which the rubber elastic body is compressed to some extent. In addition, since the spring constant varies depending on the degree of compression, it is necessary to adjust the degree of compression in order to obtain a desired spring constant.
このため、種々の方法で圧縮を図っており、下記特許文献１では、マス部材に連着するゴム弾性体をボルトナットで締め付けて圧縮するものが示されている。これによると、一々ボルトを締めなけれはならず、手間が大変で、量産品には向かない。一方、特許文献２では、マス部材と保持金具との間にゴム弾性体を加硫接着しておき、この保持金具を外方から絞ることで、ゴム弾性体に所定の圧縮状態を出現させるものが示されている。しかし、これによると、保持金具には取付孔等も形成されているから、これを変形させると、その位置が狂ったりするし、取付面の平面度も狂うことがある。また、マス部材を取り付けた保持金具を絞らなければならないから、取扱いが重いという欠点もある。 For this reason, compression is achieved by various methods, and Patent Document 1 below discloses a method in which a rubber elastic body connected to a mass member is tightened and compressed with a bolt and nut. According to this, bolts must be tightened one by one, and it takes a lot of time and is not suitable for mass production. On the other hand, in Patent Document 2, a rubber elastic body is vulcanized and bonded between a mass member and a holding metal fitting, and the holding metal fitting is squeezed from the outside so that a predetermined compression state appears in the rubber elastic body. It is shown. However, according to this, since the mounting holes are formed in the holding metal fitting, if the mounting holes are deformed, the position may be changed and the flatness of the mounting surface may be changed. Moreover, since the holding metal fitting to which the mass member is attached has to be squeezed, there is a disadvantage that handling is heavy.
本発明は、このような課題を解決したものであり、要するに、内部にマス部材を取り付ける金具を振動体に取り付ける保持部材とは別のものにするとともに、マス部材をインナー金具に対して簡単で、確実に固定できるようにしたものである。 The present invention solves such a problem. In short, the bracket for attaching the mass member inside is separated from the holding member for attaching to the vibrating body, and the mass member is simpler than the inner bracket. It can be fixed securely.
以上の課題の下、本発明は、請求項１に記載した、Ｕ字形をしたアウター金具と、内部にマス部材を収容して同じくＵ字形をしたインナー金具を間にゴム弾性体を所定に圧縮して介在させてインナー金具をアウター金具に宙づり状態に保持したダイナミックダンパーにおいて、インナー金具の両側壁に対向するマス部材の両端を外方が下がる傾斜面に形成し、インナー金具の両側壁の上端を傾斜面上で内側に巻き曲げてカールさせ、このカールでマス部材を固定したことを特徴とするダイナミックダンパーを提供したものである。 Under the above-described problems, the present invention provides a rubber elastic body with a predetermined compression between a U-shaped outer metal fitting and a U-shaped inner metal fitting that accommodates a mass member therein. In the dynamic damper in which the inner metal fitting is held in a state suspended in the outer metal fitting, both ends of the mass member facing both side walls of the inner metal fitting are formed on the inclined surfaces with the outer sides lowered, and the upper ends of both side walls of the inner metal fitting A dynamic damper is provided in which a mass member is fixed by curling by curling inwardly on an inclined surface .
また、本発明は、以上のダイナミックダンパーにおいて、請求項２に記載した、インナー金具の底壁に突起を上向させるとともに、マス部材の底面に孔を形成し、孔を突起に嵌合させてマス部材を位置決めした手段を提供したものである。 Further, according to the present invention, in the above dynamic damper, the protrusion is directed upward on the bottom wall of the inner metal fitting described in claim 2 , the hole is formed on the bottom surface of the mass member, and the hole is fitted to the protrusion. Means for positioning the mass member are provided.
請求項１の手段によると、マス部材はインナー金具を内曲げするカールで固定されるから、マス部材の厚みの誤差を吸収できる上に溶接やボルト止め等を必要とせず簡単にできる。また、カールはマス部材の傾斜面に押し付けられるものであるから、固定も強化されるし、カールの内曲げがより容易になる。請求項２の手段によると、マス部材の位置がずれたりすることがない。According to the first aspect of the present invention, since the mass member is fixed by the curl that bends the inner metal fitting, it is possible to absorb an error in the thickness of the mass member and to simplify without requiring welding or bolting. Further, since the curl is pressed against the inclined surface of the mass member, the fixing is strengthened and the curl of the curl becomes easier. According to the means of claim 2, the position of the mass member does not shift.
以下、本発明の実施の形態を図面を参照して説明する。図１は本発明の第一に係るダイナミックダンパーの製造過程を示す一部断面側面図、図３は完成後の一部断面平面図であるが、このダイナミックダンパーは、アウター金具１とインナー金具２及びマス部材３等からなる。このうち、アウター金具１は、振動体に取り付けられてインナー金具２やマス部材３を受けるものであり、本例では、側面視で、底壁４と側壁５及び側壁の上端に鍔６が設けられるＵ字形をしたものである（７は鍔に設けられた取付孔）。なお、アウター金具１のこの形状は、塑性加工によって行われる。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partially sectional side view showing a manufacturing process of a dynamic damper according to the first aspect of the present invention, and FIG. 3 is a partially sectional plan view after completion. This dynamic damper includes an outer metal fitting 1 and an inner metal fitting 2. And the mass member 3 and the like. Among these, the outer metal fitting 1 is attached to the vibrating body and receives the inner metal fitting 2 and the mass member 3. In this example, the side wall 6 and the side wall 5 and the flange 6 are provided on the upper end of the side wall in a side view. (7 is a mounting hole provided in the bag). In addition, this shape of the outer metal fitting 1 is performed by plastic working.
インナー金具２は、マス部材３を保持してアウター金具１に対してゴム弾性体８を介して宙吊り状態で保持されるものであり、本例では側面視で、底壁９と側壁１０とからなるＵ字形をしている。この場合、一般的には、インナー金具２の肉厚は、アウター金具１のそれよりは薄くなっているが、両者とも、その平面形状は様々になっている。加えて、本例のインナー金具２は、その底壁９が凹凸１１に形成されており、かつ、底壁９の中心には円形の突起１２が形成されている。なお、これら凹凸１１や突起１２の形成は、すべて塑性加工によって行われる。 The inner metal fitting 2 holds the mass member 3 and is held in a suspended state via the rubber elastic body 8 with respect to the outer metal fitting 1. In this example, the inner metal fitting 2 is separated from the bottom wall 9 and the side wall 10 in a side view. It has a U shape. In this case, generally, the thickness of the inner metal fitting 2 is thinner than that of the outer metal fitting 1, but the planar shape of both is different. In addition, the inner metal fitting 2 of the present example has a bottom wall 9 formed with irregularities 11, and a circular protrusion 12 is formed at the center of the bottom wall 9. In addition, formation of these unevenness | corrugations 11 and protrusion 12 is all performed by plastic working.
以上のインナー金具２の側壁１０の外面とアウター金具１の側壁５の内面には、ゴム弾性体８が加硫接着され、インナー金具２は、アウター金具１の中にこのゴム弾性体８を介して宙吊り状態で収容される。そして、インナー金具２にマス部材３が取り付けられてこのマス部材３が振動することで、アウター金具１が取り付けられる振動体からの振動を防振するのである。本発明では、アウター金具１にインナー金具２を取り付けた後に次の操作を施す。図２はその状態を示す断面側面図であるが、インナー金具２の底壁９の下に下敷１３を敷き、上から金型１４で押圧する。これにより、底壁９の凹凸１１はひしゃがれて側壁１０は外方にＲだけ張出する。 A rubber elastic body 8 is vulcanized and bonded to the outer surface of the side wall 10 of the inner metal fitting 2 and the inner surface of the side wall 5 of the outer metal fitting 1, and the inner metal fitting 2 is interposed in the outer metal fitting 1 via the rubber elastic body 8. Stored in a suspended state. The mass member 3 is attached to the inner metal fitting 2 and the mass member 3 vibrates, thereby preventing vibration from the vibrating body to which the outer metal fitting 1 is attached. In the present invention, after the inner metal fitting 2 is attached to the outer metal fitting 1, the following operation is performed. FIG. 2 is a cross-sectional side view showing this state. An underlay 13 is laid under the bottom wall 9 of the inner metal fitting 2 and pressed from above with a mold 14. As a result, the unevenness 11 of the bottom wall 9 is squashed and the side wall 10 projects outwardly by R.
したがって、ゴム弾性体８は、この張出量Ｒで圧縮され、そのばね特性を安定して出現させるものとなる。一般に、ゴム弾性体８を加硫接着しただけでは、安定したばね特性は得られないから、これを改善したものである。なお、金型１４の落下量を調整すれば、凹凸１１のひしゃげ量（張出量Ｒ）、すなわち、ゴム弾性体８の圧縮程度も調整できることから、これによってばね定数も調整できるものとなる。 Therefore, the rubber elastic body 8 is compressed with this overhang amount R, and its spring characteristics appear stably. In general, only by vulcanizing and bonding the rubber elastic body 8 does not provide stable spring characteristics, which is an improvement. In addition, if the fall amount of the metal mold | die 14 is adjusted, since the amount of scooping (projection amount R) of the unevenness | corrugation 11, ie, the compression degree of the rubber elastic body 8, can be adjusted, the spring constant can also be adjusted by this.
以上の処置が終了すると、マス部材３をインナー金具２の底壁９の上に載せて取り付けるが、このとき、マス部材３には、インナー金具２の底壁９に形成された突起１２に嵌合する孔１５を形成しておき、この孔１５を突起１２に嵌合するようにすれば、位置決めとずれ止めが図られる。さらに、マス部材３の上面の両端を外方に下がる傾斜面３ａに形成しておき、インナー金具２の側壁１０の上端を金型（図示省略）で下方に押圧し、この部分が内側に巻き曲げられて傾斜面３ａ上でカール１６を形成するようにする。 When the above treatment is completed, the mass member 3 is mounted on the bottom wall 9 of the inner metal fitting 2. At this time, the mass member 3 is fitted into the protrusion 12 formed on the bottom wall 9 of the inner metal fitting 2. If the hole 15 to be joined is formed and this hole 15 is fitted to the protrusion 12, positioning and displacement prevention can be achieved. Furthermore, both ends of the upper surface of the mass member 3 are formed on the inclined surfaces 3a which are outwardly lowered , and the upper end of the side wall 10 of the inner metal fitting 2 is pressed downward by a mold (not shown), and this portion is wound inwardly. The curl 16 is formed on the inclined surface 3a by being bent.
したがって、マス部材３の寸法誤差に対してはカール１６の径が大きくなったり、小さくなったりしてマス部材３を上から押え付けることになり、マス部材３がインナー金具２から外れたりするのを防止できる。これにより、インナー金具２へのマス部材３の取付けが簡単になり、煩雑な溶接やボルト止め等を要しないものとなる。 Therefore, when the diameter of the curl 16 increases or decreases with respect to the dimensional error of the mass member 3, the mass member 3 is pressed from above, and the mass member 3 is detached from the inner metal fitting 2. Can be prevented. This simplifies the mounting of the mass member 3 to the inner metal fitting 2 and does not require complicated welding or bolting.
図４は本発明の第二に係るダイナミックダンパーの製造過程を示す一部断面側面図であるが、本発明が第一の発明と違う点は、インナー金具２の側壁１０を予め内側に折り曲げた状態でゴム弾性体８を加硫接着する点である。そして、この側壁１０を外側へ押し曲げてゴム弾性体８を所要の圧縮状態にし、その後にマス部材３を保持するのである。なお、上記した凹凸１１と組み合わせたものでもよい。 FIG. 4 is a partially sectional side view showing the manufacturing process of the dynamic damper according to the second aspect of the present invention. The difference between the present invention and the first aspect is that the side wall 10 of the inner metal fitting 2 is bent inward in advance. In this state, the rubber elastic body 8 is vulcanized and bonded. Then, the side wall 10 is pushed and bent outward to bring the rubber elastic body 8 into a required compression state, and then the mass member 3 is held. It may be combined with the unevenness 11 described above.
図５は側壁１０の外方への押し曲げの原理を示す一部断面側面図であるが、外面が直立して内面が上方に広がる斜面に形成された拡げ体１７を二個インナー金具２の中に挿入しておき、拡げ体１７の中に上からくさび１８を挿入すことで拡げ体１７を外方に移動させて側壁９を外方に押し曲げて起こすものである。これにより、インナー金具２の側壁９はＳだけ外方に張出され、その結果、ゴム弾性体８は張出量Ｓで圧縮される。なお、マス部材３の取付け等については、第一の発明と同じである。 FIG. 5 is a partial cross-sectional side view showing the principle of outward bending of the side wall 10, but the expansion body 17 formed on the inclined surface in which the outer surface is upright and the inner surface is upward is formed of the two inner metal fittings 2. It is inserted inside and the wedge 18 is inserted into the expansion body 17 from above to move the expansion body 17 outward and push and bend the side wall 9 outward. Thereby, the side wall 9 of the inner metal fitting 2 is projected outward by S, and as a result, the rubber elastic body 8 is compressed by the projecting amount S. In addition, about attachment of the mass member 3, etc., it is the same as 1st invention.
以上、本発明について説明したが、その作用効果について再度説明すると、次のようになる。
１．ゴム弾性体の圧縮程度を任意に調整できるから、ばね定数の調整が容易である。
２．マス部材の取付けが容易であるから、重量の違うマス部材への変更が簡単である。
３．マス部材の取付けは、機械的な構成によるものであるから、少々の寸法誤差は吸収できるし、この結果、接当側端面は鋳放しでよい。
４．ゴム弾性体を加硫接着する段階では、未だマス部材が取り付けられていないのであるから、重量が軽くて取扱いが容易である。
５．アウター及びインナー金具の種々の成形及びマス部材の保持といった加工は、すべて塑性加工によるものであるから（機械加工を必要としない）、生産性が良くて作業環境が向上する。
Although the present invention has been described above, its operation and effect will be described again as follows.
1. Since the degree of compression of the rubber elastic body can be arbitrarily adjusted, the spring constant can be easily adjusted.
2. Since the mass member can be easily attached, it is easy to change to a mass member having a different weight.
3. Since the mass member is attached by a mechanical configuration, a small dimensional error can be absorbed, and as a result, the contact-side end face may be as-cast.
4). At the stage of vulcanizing and bonding the rubber elastic body, since the mass member is not yet attached, the weight is light and the handling is easy.
5). Since the processes such as various forming of the outer and inner metal fittings and holding of the mass member are all performed by plastic working (no machining is required), the productivity is high and the working environment is improved.
１ アウター金具
２ インナー金具
３ マス部材
３ａ 〃 の傾斜面
４ アウター金具の底壁
５ 〃の側壁
６ 鍔
７ 取付孔
８ ゴム弾性体
９ インナー金具の底壁
１０ 〃の側壁
１１ 凹凸
１２ 突起
１３ 下敷
１４ 重し
１５ 孔
１６ カール
１７ 拡げ体
１８ くさび
Ｒ 張出量
Ｓ 張出量
1 Outer bracket 2 Inner bracket 3 Mass member
3a 傾斜 inclined surface 4 bottom wall of outer metal fitting 5 side wall of 〃 6 ７ 7 mounting hole 8 rubber elastic body 9 bottom wall of inner metal fitting 10 側壁 side wall 11 unevenness 12 projection 13 underlay 14 weight 15 hole 16 curl 17 expansion body 18 Wedge R Overhang amount S Overhang amount
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010218468A JP4993394B2 (en) | 2010-09-29 | 2010-09-29 | Dynamic damper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010218468A JP4993394B2 (en) | 2010-09-29 | 2010-09-29 | Dynamic damper |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005078480A Division JP4623721B2 (en) | 2005-03-18 | 2005-03-18 | Manufacturing method of dynamic damper |
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| Publication Number | Publication Date |
|---|---|
| JP2010281460A true JP2010281460A (en) | 2010-12-16 |
| JP4993394B2 JP4993394B2 (en) | 2012-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010218468A Expired - Fee Related JP4993394B2 (en) | 2010-09-29 | 2010-09-29 | Dynamic damper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019210946A (en) * | 2018-05-31 | 2019-12-12 | 住友理工株式会社 | Dynamic damper |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000120793A (en) * | 1998-10-12 | 2000-04-25 | Taiho Kogyo Co Ltd | Wheel balance weight |
| JP2000266110A (en) * | 1999-03-16 | 2000-09-26 | Kinugawa Rubber Ind Co Ltd | Dynamic damper |
| JP2004036637A (en) * | 2002-06-28 | 2004-02-05 | Kurashiki Kako Co Ltd | Dynamic damper |
| JP2004150544A (en) * | 2002-10-30 | 2004-05-27 | Showa Corp | Method of manufacturing dynamic damper and propeller shaft |
-
2010
- 2010-09-29 JP JP2010218468A patent/JP4993394B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000120793A (en) * | 1998-10-12 | 2000-04-25 | Taiho Kogyo Co Ltd | Wheel balance weight |
| JP2000266110A (en) * | 1999-03-16 | 2000-09-26 | Kinugawa Rubber Ind Co Ltd | Dynamic damper |
| JP2004036637A (en) * | 2002-06-28 | 2004-02-05 | Kurashiki Kako Co Ltd | Dynamic damper |
| JP2004150544A (en) * | 2002-10-30 | 2004-05-27 | Showa Corp | Method of manufacturing dynamic damper and propeller shaft |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019210946A (en) * | 2018-05-31 | 2019-12-12 | 住友理工株式会社 | Dynamic damper |
| JP6998837B2 (en) | 2018-05-31 | 2022-01-18 | 住友理工株式会社 | Dynamic damper |
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| Publication number | Publication date |
|---|---|
| JP4993394B2 (en) | 2012-08-08 |
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