JP2016164437A - Dynamic damper - Google Patents

Dynamic damper Download PDF

Info

Publication number
JP2016164437A
JP2016164437A JP2015044739A JP2015044739A JP2016164437A JP 2016164437 A JP2016164437 A JP 2016164437A JP 2015044739 A JP2015044739 A JP 2015044739A JP 2015044739 A JP2015044739 A JP 2015044739A JP 2016164437 A JP2016164437 A JP 2016164437A
Authority
JP
Japan
Prior art keywords
dynamic damper
rubber
peripheral surface
mass
axial direction
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.)
Pending
Application number
JP2015044739A
Other languages
Japanese (ja)
Inventor
豊 織奥
Yutaka Orioku
豊 織奥
佳久 龍
Yoshihisa Ryu
佳久 龍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nok Corp
Original Assignee
Nok Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nok Corp filed Critical Nok Corp
Priority to JP2015044739A priority Critical patent/JP2016164437A/en
Publication of JP2016164437A publication Critical patent/JP2016164437A/en
Pending legal-status Critical Current

Links

Images

Abstract

PROBLEM TO BE SOLVED: To improve the durability of a rubber leg, and to stabilize a natural frequency characteristic, in a shaft-inserted type dynamic damper which is attached to a hollow part of a rotating shaft.SOLUTION: In a shaft-inserted type dynamic damper which is attached to a hollow part of a rotating shaft, and formed by connecting masses via rubber legs at an internal peripheral side of an attachment part with respect to the rotating shaft, the rubber legs are formed into shapes which are inclined to an axial direction from an internal peripheral face of the attachment part over external peripheral faces of the masses. The rubber legs are arranged on a circumference in a plurality of pieces, and a rubber leg having a shape which is inclined to one axial direction from the internal peripheral face of the attachment part toward the external peripheral faces of the masses, and a rubber leg having a shape which is inclined to the other axial direction from the internal peripheral face of the attachment part toward the external peripheral faces of the masses are alternately arranged on the circumference.SELECTED DRAWING: Figure 2

Description

本発明は、防振技術に係るダンパに係り、更に詳しくは、回転軸の中空部に装着されるシャフト内挿型（インナータイプ）のダイナミックダンパに関する。本発明のダイナミックダンパは例えば、自動車等車両における回転駆動系のプロペラシャフト等に用いられる。   The present invention relates to a damper related to vibration isolation technology, and more particularly to a shaft insertion type (inner type) dynamic damper mounted in a hollow portion of a rotating shaft. The dynamic damper of the present invention is used, for example, in a propeller shaft of a rotational drive system in a vehicle such as an automobile.

従来から図１０（Ａ）（Ｂ）に示すように、プロペラシャフト等の回転軸４１の中空部４２に装着されるシャフト内挿型のダイナミックダンパ１であって、回転軸４１に対する取付部１１の内周側にゴム足２１を介してマス３１を連結してなるダイナミックダンパ１が知られており、このダイナミックダンパ１は、ゴム足２１をバネとするとともにマス３１を慣性質量とする共振系を設定することにより、回転軸４１に発生する曲げ振動（径方向振動）などを低減する。   Conventionally, as shown in FIGS. 10A and 10B, a shaft-insertion type dynamic damper 1 that is attached to a hollow portion 42 of a rotating shaft 41 such as a propeller shaft, A dynamic damper 1 is known in which a mass 31 is connected to an inner peripheral side via a rubber foot 21. This dynamic damper 1 has a resonance system in which the rubber foot 21 is a spring and the mass 31 is an inertial mass. By setting, bending vibration (radial vibration) generated in the rotating shaft 41 is reduced.

ゴム足２１は、その名のとおりゴム状弾性体よりなり、ダイナミックダンパ１の径方向に延びる形状とされ、すなわちダイナミックダンパ１の中心軸線０に直交する面（軸直角平面、図示せず）に対し傾斜角度を持たない形状とされている。   The rubber foot 21 is made of a rubber-like elastic body as the name suggests, and has a shape extending in the radial direction of the dynamic damper 1, that is, on a plane orthogonal to the central axis 0 of the dynamic damper 1 (a plane perpendicular to the axis, not shown). On the other hand, the shape does not have an inclination angle.

ところで、近年における車両の軽量化等に伴い、ダイナミックダンパ１に求められる径方向の固有振動数は低下する傾向にある。径方向の固有振動数の低下に伴い、同じ加速度で入力が入るとマス３１の移動が大きくなり、結果的にゴム歪が増加し、ゴム足２１の耐久性が厳しくなる方向となる。したがってゴム足２１の耐久性を高めることが求められる。   By the way, with the recent weight reduction of vehicles, the radial natural frequency required for the dynamic damper 1 tends to decrease. As the natural frequency decreases in the radial direction, when an input is input at the same acceleration, the mass 31 moves more, resulting in an increase in rubber strain and a more severe durability of the rubber foot 21. Therefore, it is required to improve the durability of the rubber feet 21.

また、径方向の固有振動数の低下に伴い、こじり方向Ｋの固有振動数も低下するため、安定した固有振動数特性を確保することができない。   Further, as the natural frequency in the radial direction decreases, the natural frequency in the twisting direction K also decreases, so that stable natural frequency characteristics cannot be ensured.

特開２０００−２８３１３８号公報JP 2000-283138 A 特開２００３−２１４４９５号公報JP 2003-214495 A

本発明は以上の点に鑑みて、回転軸の中空部に装着されるシャフト内挿型のダイナミックダンパにおいて、ゴム足の耐久性を向上させることができ、また、固有振動数特性を安定化させることができるダイナミックダンパを提供することを目的とする。   In view of the above, the present invention can improve the durability of rubber feet and stabilize the natural frequency characteristics in a shaft-inserted dynamic damper mounted in a hollow portion of a rotating shaft. An object of the present invention is to provide a dynamic damper.

上記目的を達成するため、本発明の請求項１によるダイナミックダンパは、回転軸の中空部に装着されるシャフト内挿型のダイナミックダンパであって、前記回転軸に対する取付部の内周側にゴム足を介してマスを連結してなるダイナミックダンパにおいて、前記ゴム足を前記取付部の内周面から前記マスの外周面へかけて軸方向に傾斜する形状としたことを特徴とする。   In order to achieve the above object, a dynamic damper according to a first aspect of the present invention is a shaft-insertion type dynamic damper mounted in a hollow portion of a rotating shaft, and a rubber is provided on an inner peripheral side of the mounting portion with respect to the rotating shaft. In a dynamic damper in which a mass is connected via a foot, the rubber foot is shaped to be inclined in the axial direction from the inner peripheral surface of the mounting portion to the outer peripheral surface of the mass.

また、本発明の請求項２によるダイナミックダンパは、上記した請求項１記載のダイナミックダンパにおいて、前記ゴム足は円周上に複数が設けられ、前記取付部の内周面から前記マスの外周面へかけて軸方向一方に傾斜する形状のゴム足と、前記取付部の内周面から前記マスの外周面へかけて軸方向他方に傾斜する形状のゴム足が円周上交互に設けられていることを特徴とする。   The dynamic damper according to a second aspect of the present invention is the dynamic damper according to the first aspect, wherein a plurality of the rubber feet are provided on a circumference, and from the inner peripheral surface of the mounting portion to the outer peripheral surface of the mass. The rubber feet that are inclined in the axial direction on the one side and the rubber feet that are inclined in the other side in the axial direction from the inner peripheral surface of the mounting portion to the outer peripheral surface of the mass are alternately provided on the circumference. It is characterized by being.

また、本発明の請求項３によるダイナミックダンパは、上記した請求項１記載のダイナミックダンパにおいて、前記ゴム足は円周上に複数が設けられ、すべての前記ゴム足が前記取付部の内周面から前記マスの外周面へかけて軸方向一方に傾斜する形状とされていることを特徴とする。   The dynamic damper according to a third aspect of the present invention is the dynamic damper according to the first aspect, wherein a plurality of the rubber feet are provided on a circumference, and all the rubber feet are provided on the inner peripheral surface of the mounting portion. It is the shape which inclines in the axial direction one side from the outer peripheral surface of the said mass.

また、本発明の請求項４によるダイナミックダンパは、上記した請求項１記載のダイナミックダンパにおいて、前記ゴム足は環状に設けられ、全周に亙って前記取付部の内周面から前記マスの外周面へかけて軸方向一方に傾斜する形状とされていることを特徴とする。   The dynamic damper according to a fourth aspect of the present invention is the dynamic damper according to the first aspect, wherein the rubber feet are provided in an annular shape, and the mass of the mass is formed from the inner peripheral surface of the mounting portion over the entire circumference. It has a shape that is inclined in one axial direction toward the outer peripheral surface.

上記構成を備える本発明のダイナミックダンパにおいては、ゴム足が取付部の内周面からマスの外周面へかけて軸方向に傾斜する形状とされているため、ゴム足が径方向に延びる形状である場合と比較して、取付部およびマス間の径方向間隔は同じであることから、ゴム足の長さが大きく設定される。したがって回転軸および回転軸に取り付けられた取付部に対しマスが径方向変位するときのゴム歪み量を低減することが可能とされ、これによりゴム足の耐久性を向上させることが可能とされる。   In the dynamic damper of the present invention having the above-described configuration, the rubber feet are inclined in the axial direction from the inner peripheral surface of the mounting portion to the outer peripheral surface of the mass. Compared with a certain case, since the radial interval between the mounting portion and the mass is the same, the length of the rubber foot is set large. Therefore, it is possible to reduce the amount of rubber distortion when the mass is displaced in the radial direction with respect to the rotating shaft and the mounting portion attached to the rotating shaft, thereby improving the durability of the rubber feet. .

また、マスが径方向変位するときにゴム足が、せん断で弾性変形するため、圧縮・引張りで弾性変形する場合と比較して、径方向のバネ定数、延いては固有振動数を低く設定することが可能とされる。   Also, since the rubber feet elastically deform due to shear when the mass is displaced in the radial direction, the radial spring constant, and hence the natural frequency, should be set lower than when elastically deformed by compression and tension. It is possible.

また、本発明における上記の、取付部の内周面からマスの外周面へかけて軸方向に傾斜する形状は、マスがこじり方向に変位するときには、これを圧縮・引張りで受けやすい形状である。したがってマスのこじり方向の変位をせん断で受ける場合と比較して、こじり方向のバネ定数、延いては固有振動数を高く設定することが可能とされる。   Further, in the present invention, the shape that is inclined in the axial direction from the inner peripheral surface of the attachment portion to the outer peripheral surface of the mass is a shape that is easily received by compression and tension when the mass is displaced in the twisting direction. . Therefore, it is possible to set the spring constant in the twisting direction, and hence the natural frequency, higher than in the case where the displacement in the twisting direction of the mass is received by shearing.

尚、本発明における上記の、取付部の内周面からマスの外周面へかけて軸方向に傾斜する形状は、軸方向に傾斜する形状すなわちダイナミックダンパの中心軸線に直交する面（軸直角平面）に対し傾斜角度を持つ形状であって、円周方向に傾斜する形状ではない。したがってゴム足が円周上に複数設けられる場合でもこれらゴム足を軸方向一方から視ると各ゴム足は、径方向に延びる形状（全体として放射状の形状）として視認される。   In the present invention, the shape inclined in the axial direction from the inner peripheral surface of the mounting portion to the outer peripheral surface of the mass is a shape inclined in the axial direction, that is, a surface orthogonal to the central axis of the dynamic damper (axis perpendicular to the axis). ) With a tilt angle and not a shape tilted in the circumferential direction. Accordingly, even when a plurality of rubber feet are provided on the circumference, when viewed from one axial direction, each rubber foot is visually recognized as a shape extending in the radial direction (radial shape as a whole).

軸方向に傾斜する形状としては、以下の態様が考えられる。   The following forms are conceivable as the shape inclined in the axial direction.

（１）ゴム足を円周上に複数設ける。そして、取付部の内周面からマスの外周面へかけて軸方向一方に傾斜する形状のゴム足と、反対に取付部の内周面からマスの外周面へかけて軸方向他方に傾斜する形状のゴム足とを円周上交互に配置する。この態様では、軸方向一方に傾斜する形状のゴム足と反対に軸方向他方に傾斜する形状のゴム足が円周上交互に配置されるため、ダンパの軸方向のバランスが良好である。 (1) A plurality of rubber feet are provided on the circumference. And, the rubber feet are inclined in one axial direction from the inner peripheral surface of the mounting portion to the outer peripheral surface of the mass, and conversely, the rubber feet are inclined in the other axial direction from the inner peripheral surface of the mounting portion to the outer peripheral surface of the mass. The rubber feet in the shape are alternately arranged on the circumference. In this aspect, since the rubber feet having the shape inclined in one axial direction and the rubber feet having the shape inclined in the other axial direction are alternately arranged on the circumference, the balance of the damper in the axial direction is good.

（２）ゴム足を円周上に複数設ける。そして、すべてのゴム足を取付部の内周面からマスの外周面へかけて軸方向一方に傾斜する形状とする。この態様では、傾斜の向きが一方向のみに揃えられるため、ゴム足を成形するための加硫成形型のキャビティ形状が簡易化され、型加工が容易化される。 (2) A plurality of rubber feet are provided on the circumference. And all the rubber feet are made into the shape which inclines to an axial direction one side from the inner peripheral surface of an attaching part to the outer peripheral surface of a mass. In this aspect, since the direction of the inclination is aligned in only one direction, the cavity shape of the vulcanization mold for molding the rubber foot is simplified, and the mold processing is facilitated.

（３）ゴム足を環状に設ける。そして、このゴム足を全周に亙って取付部の内周面からマスの外周面へかけて軸方向一方に傾斜する形状とする。この態様では、傾斜の向きが一方向のみとされるため、上記（２）と同様、ゴム足を成形するための加硫成形型のキャビティ形状が簡易化され、型加工が容易化される。 (3) The rubber feet are provided in an annular shape. And this rubber foot is made into the shape which inclines to one side of an axial direction over the perimeter from the inner peripheral surface of an attaching part to the outer peripheral surface of a mass. In this aspect, since the direction of the inclination is only one direction, the cavity shape of the vulcanization mold for molding the rubber foot is simplified and the mold processing is facilitated as in the above (2).

本発明は、以下の効果を奏する。   The present invention has the following effects.

すなわち本発明においては以上説明したように、ゴム足が取付部の内周面からマスの外周面へかけて軸方向に傾斜する形状とされているため、ゴム足が径方向に延びる形状である場合と比較して、ゴム足の長さが大きく設定される。したがって回転軸および回転軸に取り付けられた取付部に対しマスが径方向変位するときのゴム歪み量を低減させることができるため、ゴム足の耐久性を向上させることができる。   In other words, in the present invention, as described above, the rubber feet have a shape that inclines in the axial direction from the inner peripheral surface of the mounting portion to the outer peripheral surface of the mass, and thus the rubber feet have a shape that extends in the radial direction. Compared to the case, the length of the rubber foot is set larger. Therefore, since the amount of rubber distortion when the mass is displaced in the radial direction with respect to the rotating shaft and the mounting portion attached to the rotating shaft can be reduced, the durability of the rubber feet can be improved.

また、マスが径方向変位するときにはゴム足がせん断で弾性変形しやすく、マスがこじり方向に変位するときにはゴム足が圧縮・引張りで弾性変形しやすいため、近年における径方向の固有振動数の低下の要求に応えつつ、こじり方向の固有振動数を高めに設定することができ、このような意味合いにおいて、固有振動数特性を安定化させることができる。   In addition, when the mass is displaced in the radial direction, the rubber feet are easily elastically deformed by shearing. Thus, the natural frequency in the twisting direction can be set higher, and the natural frequency characteristic can be stabilized in this sense.

本発明の第１実施例に係るダイナミックダンパの正面図1 is a front view of a dynamic damper according to a first embodiment of the present invention. 同ダイナミックダンパの断面図であって図１におけるＣ−Ｃ線断面図FIG. 2 is a cross-sectional view of the same dynamic damper, taken along line CC in FIG. 同ダイナミックダンパの斜視図Perspective view of the dynamic damper 本発明の第２実施例に係るダイナミックダンパの正面図Front view of a dynamic damper according to a second embodiment of the present invention 同ダイナミックダンパの断面図であって図１におけるＤ−Ｄ線断面図1 is a cross-sectional view of the same dynamic damper, taken along line DD in FIG. 同ダイナミックダンパの斜視図Perspective view of the dynamic damper 本発明の第３実施例に係るダイナミックダンパの正面図Front view of a dynamic damper according to a third embodiment of the present invention 同ダイナミックダンパの断面図であって図１におけるＥ−Ｅ線断面図FIG. 2 is a cross-sectional view of the same dynamic damper, taken along line EE in FIG. 同ダイナミックダンパの斜視図Perspective view of the dynamic damper 従来例に係るダイナミックダンパを示す図であって、（Ａ）は同ダイナミックダンパの正面図、（Ｂ）は同ダイナミックダンパの断面図であって（Ａ）におけるＢ−Ｂ線断面図It is a figure which shows the dynamic damper which concerns on a prior art example, Comprising: (A) is a front view of the dynamic damper, (B) is sectional drawing of the dynamic damper, BB sectional drawing in (A)

つぎに本発明の実施例を図面にしたがって説明する。   Next, embodiments of the present invention will be described with reference to the drawings.

第１実施例・・・
図１ないし図３は、本発明の第１実施例に係るダイナミックダンパ１を示している。当該実施例に係るダイナミックダンパ１は、回転軸４１の中空部４２に装着されるシャフト内挿型・インナータイプのダイナミックダンパ１であって、回転軸４１の内周面に対する取付部１１の内周側にゴム足２１を介してマス３１を連結してなり、ゴム足２１をバネとするとともにマス３１を慣性質量とする共振系を設定することにより、回転軸４１に発生する曲げ振動（径方向の振動）を低減する。 First embodiment
1 to 3 show a dynamic damper 1 according to a first embodiment of the present invention. The dynamic damper 1 according to this embodiment is a shaft-insertion-type / inner-type dynamic damper 1 that is attached to the hollow portion 42 of the rotating shaft 41, and the inner periphery of the mounting portion 11 with respect to the inner peripheral surface of the rotating shaft 41. The mass 31 is connected to the side via a rubber foot 21, and a bending vibration (radial direction) generated in the rotating shaft 41 is set by setting a resonance system in which the rubber foot 21 is a spring and the mass 31 is an inertial mass. Vibration).

取付部１１は、回転軸４１の内周面に嵌合される金属環１２の外周面および内周面をゴム状弾性体製の被覆部１３により被覆したものであって、この被覆部１３に対しゴム足２１が同種の材料にて一体成形され、ゴム足２１に対しマス被覆部３２が同種の材料にて一体成形されている。   The attachment portion 11 is obtained by covering the outer peripheral surface and the inner peripheral surface of the metal ring 12 fitted to the inner peripheral surface of the rotating shaft 41 with a covering portion 13 made of a rubber-like elastic body. On the other hand, the rubber foot 21 is integrally formed of the same kind of material, and the mass covering portion 32 is integrally formed of the same kind of material with respect to the rubber foot 21.

ゴム足２１は、円周上に複数が設けられ、当該実施例では１０本のゴム足２１が３６°毎の間隔をもって等配状に設けられており、これにより取付部１１とマス３１の間にゴム足２１と軸方向貫通穴部２２が円周上交互に設けられている。   A plurality of rubber feet 21 are provided on the circumference, and in this embodiment, ten rubber feet 21 are provided in a uniform manner with intervals of 36 °. The rubber feet 21 and the axial through-hole portions 22 are alternately provided on the circumference.

また、図２に示すように、ゴム足２１は、取付部１１の内周面からマス３１の外周面へかけて軸方向一方（図では右方）に傾斜する形状の第１ゴム足２１Ａと、反対に取付部１１の内周面からマス３１の外周面へかけて軸方向他方（図では左方）に傾斜する形状の第２ゴム足２１Ｂとの組み合わせよりなり、この第１ゴム足２１Ａと第２ゴム足２１Ｂが円周上交互に配置されている。   Further, as shown in FIG. 2, the rubber foot 21 includes a first rubber foot 21 </ b> A having a shape inclined in one axial direction (rightward in the drawing) from the inner peripheral surface of the attachment portion 11 to the outer peripheral surface of the mass 31. On the contrary, the first rubber foot 21A is composed of a combination with the second rubber foot 21B having a shape inclined in the other axial direction (left side in the drawing) from the inner peripheral surface of the mounting portion 11 to the outer peripheral surface of the mass 31. And second rubber feet 21B are alternately arranged on the circumference.

上記構成を備えるダイナミックダンパ１においては、ゴム足２１が取付部１１の内周面からマス３１の外周面へかけて軸方向に傾斜する形状とされているため、上記図１０に示したようなゴム足２１が径方向に延びる形状である場合と比較して、取付部１１およびマス３１間の径方向間隔は同じとして、ゴム足２１の長さが大きく設定されている。したがって回転軸４１および回転軸４１に取り付けられた取付部１１に対しマス３１が径方向変位するときのゴム歪み量を低減することができるため、ゴム足２１の耐久性を向上させることができる。   In the dynamic damper 1 having the above-described configuration, the rubber feet 21 are inclined in the axial direction from the inner peripheral surface of the attachment portion 11 to the outer peripheral surface of the mass 31, and therefore, as shown in FIG. Compared with the case where the rubber feet 21 have a shape extending in the radial direction, the length of the rubber feet 21 is set to be large, assuming that the radial interval between the mounting portion 11 and the mass 31 is the same. Therefore, since the amount of rubber distortion when the mass 31 is displaced in the radial direction with respect to the rotation shaft 41 and the attachment portion 11 attached to the rotation shaft 41 can be reduced, the durability of the rubber feet 21 can be improved.

また、マス３１が径方向変位するときには、ゴム足２１が圧縮・引張りの方向ではなく、せん断の方向に弾性変形することになる。したがって圧縮・引張りの方向に弾性変形する場合と比較して、径方向のバネ定数、延いては径方向の固有振動数を低く設定することが可能とされる。   Further, when the mass 31 is displaced in the radial direction, the rubber foot 21 is elastically deformed in the shear direction, not in the compression / tension direction. Therefore, it is possible to set the radial spring constant, and thus the natural frequency in the radial direction, lower than in the case of elastic deformation in the compression / tensile direction.

また、マス３１がこじり方向Ｋに変位するときには、ゴム足２１がせん断の方向ではなく、圧縮・引張りの方向で変位を受け止めることになる。したがって、せん断の方向で変位を受け止める場合と比較して、こじり方向Ｋのバネ定数、延いてはこじり方向Ｋの固有振動数を高く設定することが可能とされる。   When the mass 31 is displaced in the twisting direction K, the rubber foot 21 receives the displacement in the compression / tensile direction, not in the shearing direction. Therefore, it is possible to set the spring constant in the twisting direction K, and hence the natural frequency in the twisting direction K, higher than in the case where the displacement is received in the shearing direction.

したがって、上記した近年における径方向の固有振動数の低下の要求に応えつつ、こじり方向Ｋの固有振動数を高めに設定することができ、よってこのような意味合いにおいて、固有振動数特性を安定化させることができる。   Therefore, it is possible to set the natural frequency in the twisting direction K higher while responding to the above-described recent demand for reduction in the natural frequency in the radial direction, and thus stabilize the natural frequency characteristics in this sense. Can be made.

ゴム足２１の軸方向に傾斜する形状としては、以下の態様などであっても良い。   The shape of the rubber feet 21 inclined in the axial direction may be the following modes.

第２実施例・・・
図４ないし図６に示す第２実施例では、ゴム足２１が円周上に複数設けられ、具体的には５本のゴム足２１が７２°毎の間隔をもって等配状に設けられ、これにより取付部１１とマス３１の間にゴム足２１と軸方向貫通穴部２２が円周上交互に設けられている。 Second embodiment ...
In the second embodiment shown in FIG. 4 to FIG. 6, a plurality of rubber feet 21 are provided on the circumference, specifically, five rubber feet 21 are provided in a uniform manner at intervals of 72 °. Thus, the rubber feet 21 and the axial through-hole portions 22 are alternately provided between the attachment portion 11 and the mass 31 on the circumference.

図５に示すように、ゴム足２１は、５本すべてがそれぞれ、取付部１１の内周面からマス３１の外周面へかけて軸方向一方（図では左方）に傾斜する形状とされている。   As shown in FIG. 5, all of the five rubber feet 21 are inclined in one axial direction (left in the figure) from the inner peripheral surface of the attachment portion 11 to the outer peripheral surface of the mass 31. Yes.

第３実施例・・・
図７ないし図９に示す第３実施例では、ゴム足２１が環状に設けられている。 Third embodiment
In the third embodiment shown in FIGS. 7 to 9, the rubber foot 21 is provided in an annular shape.

また、図７に示すように、ゴム足２１は、その全周に亙って、取付部１１の内周面からマス３１の外周面へかけて軸方向一方（図では左方）に傾斜する形状とされている。   Further, as shown in FIG. 7, the rubber foot 21 is inclined in one axial direction (left in the figure) from the inner peripheral surface of the attachment portion 11 to the outer peripheral surface of the mass 31 over the entire periphery. It is made into a shape.

上記第２または第３実施例においては、上記第１実施例と同様に、ゴム足２１の耐久性を向上させるとともに固有振動数特性を安定化させることができ、また、上記したようにゴム足２１の傾斜の向きが一方向のみとされるため、ゴム足２１を成形するための加硫成形型（図示せず）のキャビティ形状を簡易化し、型加工を容易化することができる。   In the second or third embodiment, as in the first embodiment, the durability of the rubber foot 21 can be improved and the natural frequency characteristics can be stabilized, and the rubber foot can be stabilized as described above. Since the direction of inclination of 21 is only one direction, the cavity shape of a vulcanization mold (not shown) for molding the rubber foot 21 can be simplified, and the mold processing can be facilitated.

１ ダイナミックダンパ
１１ 取付部
１２ 金属環
１３ 被覆部
２１，２１Ａ，２１Ｂ ゴム足
２２ 軸方向貫通穴部
３１ マス
３２ マス被覆部
４１ 回転軸
４２ 中空部 DESCRIPTION OF SYMBOLS 1 Dynamic damper 11 Attaching part 12 Metal ring 13 Cover part 21, 21A, 21B Rubber foot 22 Axial through-hole part 31 Mass 32 Mass cover part 41 Rotating shaft 42 Hollow part

Claims (4)

回転軸の中空部に装着されるシャフト内挿型のダイナミックダンパであって、前記回転軸に対する取付部の内周側にゴム足を介してマスを連結してなるダイナミックダンパにおいて、
前記ゴム足を前記取付部の内周面から前記マスの外周面へかけて軸方向に傾斜する形状としたことを特徴とするダイナミックダンパ。 A dynamic damper of a shaft insertion type that is attached to a hollow portion of a rotating shaft, and is formed by connecting a mass via a rubber foot to the inner peripheral side of the mounting portion with respect to the rotating shaft.
A dynamic damper characterized in that the rubber foot is inclined in the axial direction from the inner peripheral surface of the mounting portion to the outer peripheral surface of the mass. 請求項１記載のダイナミックダンパにおいて、
前記ゴム足は円周上に複数が設けられ、前記取付部の内周面から前記マスの外周面へかけて軸方向一方に傾斜する形状のゴム足と、前記取付部の内周面から前記マスの外周面へかけて軸方向他方に傾斜する形状のゴム足が円周上交互に設けられていることを特徴とするダイナミックダンパ。 The dynamic damper according to claim 1,
A plurality of the rubber feet are provided on the circumference, the rubber feet having a shape inclined in one axial direction from the inner peripheral surface of the mounting portion to the outer peripheral surface of the mass, and the inner peripheral surface of the mounting portion. A dynamic damper characterized in that rubber legs having a shape inclined in the other axial direction are alternately provided on the circumference toward the outer circumferential surface of the mass. 請求項１記載のダイナミックダンパにおいて、
前記ゴム足は円周上に複数が設けられ、すべての前記ゴム足が前記取付部の内周面から前記マスの外周面へかけて軸方向一方に傾斜する形状とされていることを特徴とするダイナミックダンパ。 The dynamic damper according to claim 1,
A plurality of the rubber feet are provided on the circumference, and all the rubber feet are shaped to be inclined in one axial direction from the inner peripheral surface of the mounting portion to the outer peripheral surface of the mass. Dynamic damper. 請求項１記載のダイナミックダンパにおいて、
前記ゴム足は環状に設けられ、全周に亙って前記取付部の内周面から前記マスの外周面へかけて軸方向一方に傾斜する形状とされていることを特徴とするダイナミックダンパ。 The dynamic damper according to claim 1,
The dynamic damper is characterized in that the rubber feet are provided in an annular shape and are inclined in one axial direction from the inner peripheral surface of the mounting portion to the outer peripheral surface of the mass over the entire periphery.
JP2015044739A 2015-03-06 2015-03-06 Dynamic damper Pending JP2016164437A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2015044739A JP2016164437A (en) 2015-03-06 2015-03-06 Dynamic damper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2015044739A JP2016164437A (en) 2015-03-06 2015-03-06 Dynamic damper

Publications (1)

Publication Number Publication Date
JP2016164437A true JP2016164437A (en) 2016-09-08

Family

ID=56876732

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2015044739A Pending JP2016164437A (en) 2015-03-06 2015-03-06 Dynamic damper

Country Status (1)

Country Link
JP (1) JP2016164437A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116557501A (en) * 2023-07-07 2023-08-08 四川蜀道新制式轨道集团有限责任公司 Vibration reduction gear transmission shaft

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0427238U (en) * 1990-06-28 1992-03-04
JPH04105236U (en) * 1991-02-15 1992-09-10 東海ゴム工業株式会社 dynamic damper
JP2000283138A (en) * 1999-03-29 2000-10-13 Suzuki Motor Corp Propeller shaft with dynamic damper
JP2010144909A (en) * 2008-12-22 2010-07-01 Marugo Rubber Ind Co Ltd Dynamic damper
JP2014231848A (en) * 2013-05-28 2014-12-11 株式会社ショーワ Dynamic damper
JP2016070462A (en) * 2014-10-01 2016-05-09 住友理工株式会社 Dynamic damper

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0427238U (en) * 1990-06-28 1992-03-04
JPH04105236U (en) * 1991-02-15 1992-09-10 東海ゴム工業株式会社 dynamic damper
JP2000283138A (en) * 1999-03-29 2000-10-13 Suzuki Motor Corp Propeller shaft with dynamic damper
JP2010144909A (en) * 2008-12-22 2010-07-01 Marugo Rubber Ind Co Ltd Dynamic damper
JP2014231848A (en) * 2013-05-28 2014-12-11 株式会社ショーワ Dynamic damper
JP2016070462A (en) * 2014-10-01 2016-05-09 住友理工株式会社 Dynamic damper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116557501A (en) * 2023-07-07 2023-08-08 四川蜀道新制式轨道集团有限责任公司 Vibration reduction gear transmission shaft
CN116557501B (en) * 2023-07-07 2024-02-13 四川蜀道新制式轨道集团有限责任公司 Vibration reduction gear transmission shaft

Similar Documents

Publication Publication Date Title
JP2013226951A (en) Center bearing support
US11916461B2 (en) Assembly for supporting an electric motor, notably in a motor vehicle heating, ventilation and/or air conditioning device
JP2010031926A (en) Dynamic damper
US9528548B2 (en) Center bearing support
JP6711386B2 (en) Housing device for blower motor and vehicle air conditioner
JP2016164437A (en) Dynamic damper
US6869225B2 (en) Center bearing support
JP2003247595A (en) Dynamic damper and propeller shaft
JP2007092934A (en) Dynamic damper, its manufacturing method, and propeller shaft
JP6936051B2 (en) Dynamic damper
JP2016070462A (en) Dynamic damper
JP2017219055A (en) Gear Damper
JP5944282B2 (en) Dynamic damper for hollow shaft
WO2017154764A1 (en) Blower
JP6851929B2 (en) Dynamic damper
JP4833908B2 (en) Anti-vibration bush
JP7152326B2 (en) Dynamic vibration absorber
JPH0231623Y2 (en)
JP2014009718A (en) Dynamic damper
JP7249768B2 (en) Dynamic vibration absorber
JP2011140977A (en) Dynamic damper
JP6917200B2 (en) Dynamic damper
JP2022100087A (en) Vibration control device
JP2015102121A (en) Torsional damper
JP6538354B2 (en) Center bearing support

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20180214

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20181115

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20181128

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20190605