JP2013148211A - Pendulum damper - Google Patents

Pendulum damper Download PDF

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JP2013148211A
JP2013148211A JP2012011388A JP2012011388A JP2013148211A JP 2013148211 A JP2013148211 A JP 2013148211A JP 2012011388 A JP2012011388 A JP 2012011388A JP 2012011388 A JP2012011388 A JP 2012011388A JP 2013148211 A JP2013148211 A JP 2013148211A
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pendulum
pendulum member
external force
input
damper
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Akira Ishikawa
暁 石川
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Toyota Motor Corp
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Toyota Motor Corp
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Abstract

PROBLEM TO BE SOLVED: To solve such the problem that there is a risk that, when coincidence of timing that external force is input to a pendulum member with timing that the amplitude of reciprocal movement performed by the pendulum member occurs repeatedly, the amplitude of the reciprocal movement is gradually amplified, non-linearity of the reciprocal movement and a sliding amount when the pendulum member rolls on a rolling surface increase and vibration damping performance of a pendulum damper decreases.SOLUTION: A pendulum damper includes a pendulum member which performs reciprocal movement in a storage 3 chamber disposed on a place separated from the rotation center of a rotation member 2 to the outer circumferential side, wherein the pendulum member includes a first pendulum member 5, a second pendulum member 6 and an elastic member which generates reaction force of the external force input to either one side of a center part and an outer edge part on a portion of the side where the external force is not input.

Description

本発明は、回転部材のトルク変動あるいは捩り振動を減衰させる振子ダンパに関するものである。   The present invention relates to a pendulum damper that attenuates torque fluctuation or torsional vibration of a rotating member.

車両に搭載されるエンジンのクランクシャフトや変速機のインプットシャフト、あるいはドライブシャフトなどは、エンジンの回転数変動や出力トルク変動に起因して、その軸心周りに固有の捩り振動を生じることがある。   Engine crankshafts, transmission input shafts, and drive shafts mounted on vehicles may cause inherent torsional vibrations around their axes due to engine speed fluctuations and output torque fluctuations. .

この捩り振動が大きくなる回転数領域や、捩り振動の周期とエンジンの爆発変動の周期とが共振しやすい回転数領域において、捩り振動を低減するために上記クランクシャフトやインプットシャフトなどの回転部材に取り付けられ、捩り振動を減衰させる振子ダンパが特許文献1に記載されている。   In the rotational speed region where the torsional vibration is large, or in the rotational speed region where the torsional vibration period and the engine explosion fluctuation period tend to resonate, in order to reduce the torsional vibration, the rotating member such as the crankshaft or the input shaft is used. A pendulum damper that is attached and damps torsional vibration is described in Patent Document 1.

特許文献1に記載の振子ダンパは、フライホイールと、フライホイール本体に形成された収容室と、この収容室の内壁面の一部に形成された曲面形状の転動面と、フライホイールの回転変動あるいは捩り振動にともない、転動面に沿って往復運動可能な振子部材とを備えている。   The pendulum damper described in Patent Document 1 includes a flywheel, a storage chamber formed in the flywheel body, a curved rolling surface formed on a part of the inner wall surface of the storage chamber, and rotation of the flywheel. And a pendulum member capable of reciprocating along the rolling surface in accordance with fluctuation or torsional vibration.

転動面は一定半径の円形状に形成されており、この転動面のうち、フライホイールの径方向外側に膨らむ部分で振子部材が転動しながら(面に沿って転がりながら)往復運動を行う。この振子部材の往復運動は、フライホイールの回転にともなって振子部材に生じる遠心力(復元力)に起因するもので、フライホイールに生じた回転変動あるいは捩り振動とは逆位相となる。よって、フライホイールに生じた回転変動のうち、振子部材の往復運動次数に等しい所定次数の回転変動、あるいは捩り振動を減衰することができる。   The rolling surface is formed in a circular shape with a constant radius, and the reciprocating motion is performed while the pendulum member rolls (rolls along the surface) at a portion of the rolling surface that swells outward in the radial direction of the flywheel. Do. This reciprocating motion of the pendulum member is caused by a centrifugal force (restoring force) generated in the pendulum member with the rotation of the flywheel, and has a phase opposite to the rotational fluctuation or torsional vibration generated in the flywheel. Therefore, the rotational fluctuation of a predetermined order equal to the reciprocating movement order of the pendulum member or the torsional vibration among the rotational fluctuations generated in the flywheel can be attenuated.

また、特許文献2に記載の振子ダンパは、転動面はフライホイール外径方向へ膨らむ曲面形状で構成されており、転動面上で往復運動する振子部材に作用する遠心力が振子部材の振れ角に比例するようなっている。よって、振子部材の振れ角の大きさに関わらず、フライホイールに生じた回転変動あるいは捩り振動の振動を安定して減衰させることができる。
特開平6−58373号公報 特開2000−18329号公報
Further, in the pendulum damper described in Patent Document 2, the rolling surface is formed in a curved shape that swells in the outer diameter direction of the flywheel, and centrifugal force acting on the pendulum member that reciprocates on the rolling surface is applied to the pendulum member. It is proportional to the deflection angle. Therefore, regardless of the magnitude of the swing angle of the pendulum member, it is possible to stably attenuate the rotational fluctuation or torsional vibration generated in the flywheel.
JP-A-6-58373 JP 2000-18329 A

特許文献1あるいは特許文献2に開示されるような、従来の振子ダンパ(フライホイール)をエンジンのクランクシャフトなどの回転部材に取り付けた場合、振子部材に対し、回転変動や捩り振動に起因するものとは異なる外力が入力されるタイミングと、振子部材が行う往復運動の振幅が大きくなるタイミングとが一致する場合がある。   When a conventional pendulum damper (flywheel) as disclosed in Patent Document 1 or Patent Document 2 is attached to a rotating member such as an engine crankshaft, the pendulum member is caused by rotational fluctuation or torsional vibration. There is a case where the timing at which an external force different from is input coincides with the timing at which the amplitude of the reciprocating motion performed by the pendulum member increases.

ここで、「回転変動や捩り振動に起因するものとは異なる外力」とは、例えば振子ダンパをエンジンのクランクシャフトに備えた車両が悪路を走行した際、車両に加わる上下左右の振動に基づいて振子ダンパ(および振子部材)に加わる外力のことをいう。   Here, “an external force different from that caused by rotational fluctuations and torsional vibration” is based on vertical and horizontal vibration applied to the vehicle when the vehicle equipped with a pendulum damper on the engine crankshaft travels on a rough road. This means the external force applied to the pendulum damper (and the pendulum member).

回転変動や捩り振動に起因するものとは異なる外力が入力されるタイミングと、振子部材が行う往復運動の振幅が大きくなるタイミングが一致した場合、振子部材に入力された外力によって振子部材が更に変位し、その変位方向と往復運動の方向が同じであれば、振子部材が行う往復運動の振幅は更に大きくなる。   When the timing at which an external force different from that caused by rotational fluctuation or torsional vibration is input coincides with the timing at which the amplitude of the reciprocating motion performed by the pendulum member increases, the pendulum member is further displaced by the external force input to the pendulum member. If the displacement direction and the direction of the reciprocating motion are the same, the amplitude of the reciprocating motion performed by the pendulum member is further increased.

このように、振子部材に外力が入力されるタイミングと、振子部材が行う往復運動の振幅が大きくなるタイミングとの一致が繰り返し発生すると、往復運動の振幅が徐々に増幅される場合がある。つまり、振子部材に入力された外力によって、振子部材は自励振動することになる。   As described above, when the coincidence between the timing at which an external force is input to the pendulum member and the timing at which the amplitude of the reciprocating motion performed by the pendulum member increases repeatedly, the amplitude of the reciprocating motion may be gradually amplified. In other words, the pendulum member vibrates by itself due to the external force input to the pendulum member.

自励振動が続き、振子部材が行う往復運動の振幅が増幅を続けると、往復運動の非線形性や、振子部材が転動面を転動する際のすべり量が増大し、振子ダンパの振動減衰性能が低下する虞がある。   If self-excited vibration continues and the amplitude of the reciprocating motion performed by the pendulum member continues to increase, the nonlinearity of the reciprocating motion and the amount of slip when the pendulum member rolls on the rolling surface increase, and the vibration of the pendulum damper is attenuated. There is a possibility that the performance is lowered.

上記課題を解決するために、本発明に係る振子ダンパでは、回転部材と、回転部材の回転中心から外周側に離れた場所に設けられた収容室と、収容室に収容され、この収容室を構成する内壁面の一部である転動面に沿って往復運動をする振子部材とを備える振子ダンパにおいて、振子部材は、第1振子部材と、第2振子部材と、中央部と外縁部のうちいずれか一方に入力された外力の反力を外力が入力されていない方の部位で発生する弾性部材と、第1振子部材および第2振子部材を転動面に沿って回転可能に保持し、かつ弾性部材と接続する接続部材とを備えることを特徴とする。   In order to solve the above-described problem, in the pendulum damper according to the present invention, the rotating member, a storage chamber provided at a location away from the rotation center of the rotating member on the outer peripheral side, and a storage chamber are accommodated. In a pendulum damper comprising a pendulum member that reciprocates along a rolling surface that is a part of an inner wall surface that constitutes the pendulum member, the pendulum member includes a first pendulum member, a second pendulum member, a central portion, and an outer edge portion. An elastic member that generates a reaction force of an external force input to one of them in a region where no external force is input, and a first pendulum member and a second pendulum member are rotatably held along the rolling surface. And a connecting member connected to the elastic member.

弾性部材は、第1振子部材、もしくは第2振子部材へ入力された外力を減衰させることができる。より具体的には、例えば、第1振子部材に対し、第1振子部材が第2振子部材へ接近するような外力が入力されたとすると、弾性部材は第1振子部材から第2振子部材へ近づくように変位し、その外力の転動面接線方向成分が弾性部材の中央部に伝達される。一方で、弾性部材の外縁部では、中央部に伝達された外力とは逆向きの反力(弾性力)を発生し、中央部に伝達された外力の一部を打ち消すことができる。   The elastic member can attenuate the external force input to the first pendulum member or the second pendulum member. More specifically, for example, if an external force that causes the first pendulum member to approach the second pendulum member is input to the first pendulum member, the elastic member approaches the second pendulum member from the first pendulum member. The rolling surface tangential component of the external force is transmitted to the central portion of the elastic member. On the other hand, at the outer edge portion of the elastic member, a reaction force (elastic force) opposite to the external force transmitted to the central portion is generated, and a part of the external force transmitted to the central portion can be canceled out.

従来技術のように、弾性部材を介さず単純に第1振子部材および第2振子部材を連結して振子部材を構成した場合(あるいは、単一部材のみで振子部材を構成した場合)、第1振子部材、もしくは第2振子部材に入力された外力はそのまま作用する。よって、第1振子部材および第2振子部材の変位量は、第1振子部材あるいは第2振子部材に入力された外力に応じた変位量となる。   When the pendulum member is configured by simply connecting the first pendulum member and the second pendulum member without using an elastic member as in the prior art (or when the pendulum member is configured by only a single member), the first The external force input to the pendulum member or the second pendulum member acts as it is. Therefore, the displacement amount of the first pendulum member and the second pendulum member is a displacement amount corresponding to the external force input to the first pendulum member or the second pendulum member.

一方、本件発明のように弾性部材を介した場合、第1振子部材、もしくは第2振子部材に入力された外力は、その一部を弾性部材が生じた反力によって打ち消すことができる(入力された外力を減衰することができる)ため、弾性部材を介さずに構成した場合と比べ第1振子部材および第2振子部材の変位量を小さくすることができる。   On the other hand, when the elastic member is interposed as in the present invention, the external force input to the first pendulum member or the second pendulum member can be partially canceled by the reaction force generated by the elastic member (input). Therefore, the displacement amount of the first pendulum member and the second pendulum member can be reduced as compared with the case where the elastic member is not interposed.

本発明に係る振子ダンパによれば、振子部材に入力された外力の一部を弾性部材によって打ち消し減衰させることができるため、振子部材に外力が入力されるタイミングと振子部材が行う往復運動の振幅が増大するタイミングとが一致した場合であっても、振子部材に入力された外力による往復運動の振幅増大量を抑えることができる。   According to the pendulum damper according to the present invention, since a part of the external force input to the pendulum member can be canceled and attenuated by the elastic member, the timing at which the external force is input to the pendulum member and the amplitude of the reciprocating motion performed by the pendulum member Even when the timing at which the torque increases increases, the amount of increase in the amplitude of the reciprocating motion due to the external force input to the pendulum member can be suppressed.

振子部材に外力が入力されるタイミング、振子部材が行う往復運動の振幅が増大するタイミングとの一致が頻発し振子部材が自励振動を続けた場合でも、その振幅の増大量を抑えることができるため、振子ダンパの性能低下を抑えることができる。   Even when the timing at which an external force is input to the pendulum member and the timing at which the amplitude of the reciprocating motion performed by the pendulum member increases frequently, the amount of increase in the amplitude can be suppressed even when the pendulum member continues self-excited vibration. Therefore, it is possible to suppress the performance deterioration of the pendulum damper.

また、弾性部材は、振子部材に外力が入力されず往復運動のみを行っている場合、その往復運動にともなって第1振子部材もしくは第2振子部材に入力される外力では変形しない程度の強度を有しているため、往復運動にともなって生じる外力以外の何らかの外乱による外力が入力されなければ第1振子部材および第2振子部材は通常の振子部材として振る舞うことができる。   In addition, when the elastic member is only reciprocating without external force being input to the pendulum member, the elastic member has a strength that is not deformed by the external force input to the first pendulum member or the second pendulum member along with the reciprocating motion. Therefore, the first pendulum member and the second pendulum member can behave as normal pendulum members unless an external force due to some disturbance other than the external force generated by the reciprocating motion is input.

以下、本発明の一実施形態に係る振子ダンパを、図1〜図5に基づいて説明する。まず、図1および図2を参照して、本実施例に係る振子ダンパ1を説明する。振子ダンパ1は、回転する回転部材、例えば車両に搭載されるエンジンのクランクシャフトや変速機のインプットシャフト(入力軸)、あるいはドライブシャフト等の既知の回転体に取り付けられ、取り付けられた回転部材の回転変動、もしくはこれに起因する捩り振動を吸収、もしくは減衰する振子ダンパである。図1には、1つの振子ダンパ1が取り付けられる回転面に対し、垂直な方向から見た全体図を示す。図2には、振子ダンパ1に設けられる収容室3周りの拡大図を示す。   Hereinafter, a pendulum damper according to an embodiment of the present invention will be described with reference to FIGS. First, a pendulum damper 1 according to this embodiment will be described with reference to FIGS. 1 and 2. The pendulum damper 1 is attached to a known rotating body such as a rotating member that rotates, for example, a crankshaft of an engine mounted on a vehicle, an input shaft (input shaft) of a transmission, or a drive shaft. This is a pendulum damper that absorbs or attenuates rotational fluctuation or torsional vibration caused by the fluctuation. FIG. 1 shows an overall view seen from a direction perpendicular to a rotating surface to which one pendulum damper 1 is attached. FIG. 2 shows an enlarged view around the accommodation chamber 3 provided in the pendulum damper 1.

振子ダンパ1は、上記のような既知の回転体と一体回転する回転部材2と、その回転部材2の回転中心よりも外周側に位置し、円筒形状に形成された収容室3と、収容室3を構成する内壁面の一部であって一定曲率の円弧面で形成される転動面4と、収容室3に収容され回転部材2の回転変動あるいはこれに起因する捩り振動に応じて転動面4を往復運動する第1振子部材5および第2振子部材6からなる慣性質量体10(詳細は後述する)を備えている。本実施例では、図1に示すように、本実施例では収容室3は回転部材2の上下左右に1つずつ、計4つが形成され、一収容室あたり1つの慣性質量体10を備えている。   The pendulum damper 1 includes a rotating member 2 that rotates integrally with a known rotating body as described above, a housing chamber 3 that is positioned on the outer peripheral side of the rotation center of the rotating member 2 and is formed in a cylindrical shape, and a housing chamber 3 is a part of the inner wall surface constituting the rolling surface 4 formed by an arc surface having a constant curvature, and the rolling surface 4 is rotated in accordance with the rotational fluctuation of the rotating member 2 accommodated in the accommodating chamber 3 or the torsional vibration caused thereby. An inertial mass body 10 (details will be described later) including a first pendulum member 5 and a second pendulum member 6 that reciprocate on the moving surface 4 is provided. In the present embodiment, as shown in FIG. 1, in this embodiment, a total of four storage chambers 3 are formed, one on each of the upper, lower, left and right sides of the rotating member 2, and one inertia mass body 10 is provided per one storage chamber. Yes.

ここで、第1振子部材5および第2振子部材6を含む複数の要素から構成される慣性質量体10について、図3および図4を参照して説明する。図3は、慣性質量体10を上方から見た図(転動面4に対して垂直方向から見たD矢視図)であって、図4は慣性質量体10を側方から見た図(転動面4に対して水平方向から見たC矢視図)である。   Here, an inertial mass body 10 including a plurality of elements including the first pendulum member 5 and the second pendulum member 6 will be described with reference to FIGS. 3 and 4. FIG. 3 is a view of the inertial mass body 10 as viewed from above (a view as viewed from the direction D perpendicular to the rolling surface 4), and FIG. 4 is a view of the inertial mass body 10 as viewed from the side. (C arrow view seen from the horizontal direction with respect to the rolling surface 4).

第1振子部材5および第2振子部材6は、慣性質量体10の質量の大部分を占め、転動面4を往復運動する際に慣性力を生じ、回転体のねじり振動を減衰させるのに十分な質量を有している。この第1振子部材5および第2振子部材6は、接続部材12a、12b、および16によって転動面4を転動可能に保持されるとともに、第1振子部材5と第2振子部材6の間に皿バネ11を介して接続されている。皿バネ11は、例えば所定の弾性係数を有する皿バネであって、その中央部に入力された力と反対向きの反力を外縁部で発生するようになっている。あるいは、外縁部に入力された力と反対向きの反力を中央部で発生することもできる。この皿バネ11は本発明における弾性部材に相当する。   The first pendulum member 5 and the second pendulum member 6 occupy most of the mass of the inertial mass body 10, generate an inertial force when reciprocating the rolling surface 4, and attenuate the torsional vibration of the rotating body. It has a sufficient mass. The first pendulum member 5 and the second pendulum member 6 are held by the connecting members 12 a, 12 b, and 16 so that the rolling surface 4 can roll, and between the first pendulum member 5 and the second pendulum member 6. Are connected via a disc spring 11. The disc spring 11 is a disc spring having a predetermined elastic coefficient, for example, and generates a reaction force in the opposite direction to the force input to the central portion thereof at the outer edge portion. Alternatively, a reaction force opposite to the force input to the outer edge portion can be generated at the central portion. The disc spring 11 corresponds to an elastic member in the present invention.

第1振子部材5と皿バネ11とは、第1振子部材5の転動中心軸14から皿バネ11に向かって延伸し、第1振子部材5の側面(転動面4に対し水平方向から第1振子部材5を見た面、C矢視図面)を挟みこむ一対の棒状部材12aと、この一対の棒状部材12aを連結し、第1振子部材5の転動中心軸14と同方向に延伸する一本の棒状部材12bとから構成される接続部材12を介して接続されている。第1振子部材5と接続部材12とは第1振子部材5の転動中心軸14においてピン13で接続され、皿バネ11と接続部材12とは連結部15によって互いの中央部を接続している。第1振子部材5と接続部材12とはピン13で接続されるが、第1振子部材5は転動面4に沿って転動可能なように保持されるため、第1振子部材5の往復運動を妨げることはない。   The first pendulum member 5 and the disc spring 11 extend from the rolling center shaft 14 of the first pendulum member 5 toward the disc spring 11, and the side surface of the first pendulum member 5 (from the horizontal direction with respect to the rolling surface 4). A pair of rod-like members 12a sandwiching a surface viewed from the first pendulum member 5 (C arrow drawing) and the pair of rod-like members 12a are connected in the same direction as the rolling center shaft 14 of the first pendulum member 5. It is connected via a connecting member 12 composed of a single rod-like member 12b that extends. The first pendulum member 5 and the connection member 12 are connected by a pin 13 at the rolling center shaft 14 of the first pendulum member 5, and the disc spring 11 and the connection member 12 are connected to each other by a connecting portion 15. Yes. The first pendulum member 5 and the connecting member 12 are connected by pins 13, but the first pendulum member 5 is held so as to be able to roll along the rolling surface 4, so that the first pendulum member 5 is reciprocated. Does not interfere with exercise.

第2振子部材6と皿バネ11とは、第2振子部材6の転動中心軸18から皿バネ11に向かって延伸し、第2振子部材6の側面(転動面4に対し水平方向から第2振子部材6を見た面、C矢視図面)を挟みこむ一対の棒状部材から構成される接続部材16を介して接続されている。第2振子部材6と接続部材16とは、第2振子部材6の転動中心軸18においてピン17で接続され、皿バネ11と接続部材16とは、連結部19によって接続部材16の皿バネ14側端部と皿バネ11の外縁部とを接続している。第2振子部材6と接続部材16とはピン17で接続されるが、第2振子部材6は転動面4に沿って転動可能なように保持されるため、第2振子部材6の往復運動を妨げることはない。   The second pendulum member 6 and the disc spring 11 extend from the rolling center shaft 18 of the second pendulum member 6 toward the disc spring 11, and the side surface of the second pendulum member 6 (from the horizontal direction with respect to the rolling surface 4). The second pendulum member 6 is connected via a connecting member 16 composed of a pair of rod-shaped members sandwiching a surface viewed from the direction of the pendulum member 6 (C arrow drawing). The second pendulum member 6 and the connection member 16 are connected by a pin 17 on the rolling center shaft 18 of the second pendulum member 6, and the disc spring 11 and the connection member 16 are connected to the disc spring of the connection member 16 by a connecting portion 19. The 14 side edge part and the outer edge part of the disk spring 11 are connected. The second pendulum member 6 and the connection member 16 are connected by pins 17. Since the second pendulum member 6 is held so as to roll along the rolling surface 4, the second pendulum member 6 reciprocates. Does not interfere with exercise.

慣性質量体10は、慣性力を生じるように所定の質量を有する第1振子部材5および第2振子部材6に加え、第1振子部材5および第2振子部材6とともに転動面4を往復運動する要素である皿バネ11、(第1振子部材5に接続される)接続部材12、(第2振子部材6に接続される)接続部材16、(第1振子部材5に接続される)ピン13、(第2振子部材6に接続される)ピン17、(皿バネ11の中央部に位置する)連結部15、(皿バネ11の両端部に位置する)連結部19を含めたものをいう。   Inertial mass body 10 reciprocates on rolling surface 4 together with first pendulum member 5 and second pendulum member 6 in addition to first pendulum member 5 and second pendulum member 6 having a predetermined mass so as to generate inertial force. Belleville spring 11 which is an element to be connected, connecting member 12 (connected to first pendulum member 5), connecting member 16 (connected to second pendulum member 6), pin (connected to first pendulum member 5) 13, including a pin 17 (connected to the second pendulum member 6), a connecting portion 15 (located at the center of the disc spring 11), and a connecting portion 19 (located at both ends of the disc spring 11). Say.

慣性質量体10は、その往復振動次数によって回転部材2の所定次数の捩り振動を吸収、もしくは減衰するものであるから、慣性質量体10の往復運動次数が、吸収もしくは減衰したい回転部材2の捩り振動の次数、すなわち回転変動次数に等しくなるように、あるいはその回転変動次数に近似した値になるように慣性質量体10の質量が設定される。ただし、慣性質量体10の質量の大部分は第1振子部材および第2振子部材によって占められるため、実際は第1振子部材および第2振子部材の質量を所望の値に設定すればよい。   The inertial mass body 10 absorbs or attenuates the torsional vibration of a predetermined order of the rotating member 2 by the reciprocating vibration order thereof, so that the reciprocating motion order of the inertial mass body 10 is torsional of the rotating member 2 to be absorbed or attenuated. The mass of the inertial mass body 10 is set so as to be equal to the vibration order, that is, the rotational fluctuation order or a value approximate to the rotational fluctuation order. However, since most of the mass of the inertial mass body 10 is occupied by the first pendulum member and the second pendulum member, the masses of the first pendulum member and the second pendulum member may actually be set to desired values.

図5は、図2に示すA−A´線に沿う断面図(B矢視図)を示してある。ここでは、第1振子部材5を含む断面を示しており、第1振子部材5の両側面に、接続部材12およびピン13がある。ピン13は、第1振子部材5の転動中心軸14とピン13の中心軸とが一致するように一体形成されている。第1振子軸第1振子部材5と一体に形成されている。ピン13は接続部材12と互いに回転可能に嵌合しているため、第1振子部材5は接続部材12に対し転動中心軸14を中心として転動(回転)可能である一方、転動中心軸14は接続部材12に対してずれることがない。これは、第2振子部材6を含む断面であったとしても同様であり、接続部材およびピンを第2振子部材6に接続されるものに置き換えることができる。   FIG. 5 shows a cross-sectional view (a view of arrow B) along the line AA ′ shown in FIG. 2. Here, a cross section including the first pendulum member 5 is shown, and there are connecting members 12 and pins 13 on both side surfaces of the first pendulum member 5. The pin 13 is integrally formed so that the rolling center axis 14 of the first pendulum member 5 and the center axis of the pin 13 coincide. The first pendulum shaft is formed integrally with the first pendulum member 5. Since the pin 13 is rotatably fitted to the connecting member 12, the first pendulum member 5 can roll (rotate) around the rolling center axis 14 with respect to the connecting member 12, while the rolling center The shaft 14 does not shift with respect to the connection member 12. This is the same even if the cross section includes the second pendulum member 6, and the connection member and the pin can be replaced with those connected to the second pendulum member 6.

以上、図1〜図5で説明される本実施例に係る振子ダンパ1は、回転部材2の回転変動あるいはこれに起因する捩り振動に応じて、慣性質量体10が転動面4を往復運動することで、回転部材2の所定次数の捩り振動を吸収、もしくは減衰することができる。また、振子ダンパ1が取り付けられた回転体に予期し得ないショックが入力された場合でも、捩り振動の吸収能力、もしくは減衰能力の低下を抑えることができる。   As described above, in the pendulum damper 1 according to the present embodiment described with reference to FIGS. 1 to 5, the inertia mass body 10 reciprocates on the rolling surface 4 in accordance with the rotational fluctuation of the rotating member 2 or torsional vibration resulting therefrom. By doing so, the torsional vibration of the predetermined order of the rotating member 2 can be absorbed or attenuated. Further, even when an unexpected shock is input to the rotating body to which the pendulum damper 1 is attached, it is possible to suppress a decrease in torsional vibration absorption capability or damping capability.

振子ダンパ1が取り付けられた回転体に予期し得ないショックが入力された場合について、以下で詳細に説明する。例えば、車両に搭載されるエンジンのクランクシャフト(図示せず)に本実施例に係る振子ダンパ1を適用したとすると、車両が平坦路を走行している場合は、慣性質量体10の往復運動によって、回転部材2の回転変動あるいはこれに起因する捩り振動を吸収、もしくは減衰することができる。   A case where an unexpected shock is input to the rotating body to which the pendulum damper 1 is attached will be described in detail below. For example, when the pendulum damper 1 according to the present embodiment is applied to a crankshaft (not shown) of an engine mounted on a vehicle, the reciprocating motion of the inertial mass body 10 is performed when the vehicle is traveling on a flat road. Thus, it is possible to absorb or attenuate the rotational fluctuation of the rotating member 2 or the torsional vibration resulting therefrom.

一方、例えば悪路を走行しており、車両に予期し得ないショックが入力された場合は、このショックが外力として慣性質量体10に入力される。慣性質量体10のうち、特に外力による影響を受けるのは、慣性力を生じるべく所定の(大きな)質量を有する第1振子部材5もしくは第2振子部材6であり、ここでは第1振子部材5が外力による影響を受ける場合を考える。   On the other hand, for example, when an unexpected shock is input to the vehicle traveling on a rough road, the shock is input to the inertial mass body 10 as an external force. Among the inertial mass bodies 10, particularly affected by the external force is the first pendulum member 5 or the second pendulum member 6 having a predetermined (large) mass to generate the inertial force. Suppose that is affected by external force.

第1振子部材5に対し、第1振子部材5が第2振子部材6へ接近するような外力が入力された場合、入力された外力は接続部材12および連結部15を介して皿バネ11の中央部へ伝達される。皿バネ11は例えば所定の弾性係数を有する皿バネであって、慣性質量体10の往復運動にともなって第1振子部材5に入力される外力では変形しない程度の強度を有している。よって、通常走行時、言い換えると、第1振子部材5に入力される外力が慣性質量体10の往復運動にともなって生じる力のみである時は皿バネ11は変形しない。しかし、悪路走行時、言い換えると、第1振子部材5に入力される外力が慣性質量体10の往復運動にともなって生じる力を上回った時は、接続部材12および連結部15を介して皿バネ11の中央部に入力された力によって変形し、中央部に入力された力と反対向きの反力を外縁部で発生することができる。つまり、皿バネ11は、第1振子部材5に入力された過大外力を受けて反力を発生し、第1振子部材5に入力された外力の一部を打ち消すことができる。   When an external force that causes the first pendulum member 5 to approach the second pendulum member 6 is input to the first pendulum member 5, the input external force is applied to the disc spring 11 via the connection member 12 and the coupling portion 15. It is transmitted to the central part. The disc spring 11 is, for example, a disc spring having a predetermined elastic coefficient, and has a strength that does not cause deformation by an external force input to the first pendulum member 5 as the inertial mass body 10 reciprocates. Therefore, during normal travel, in other words, when the external force input to the first pendulum member 5 is only the force generated by the reciprocating motion of the inertial mass body 10, the disc spring 11 is not deformed. However, when traveling on a rough road, in other words, when the external force input to the first pendulum member 5 exceeds the force generated by the reciprocating motion of the inertial mass body 10, the plate is connected via the connecting member 12 and the connecting portion 15. It can be deformed by the force input to the central portion of the spring 11 and a reaction force opposite to the force input to the central portion can be generated at the outer edge portion. That is, the disc spring 11 can generate a reaction force in response to an excessive external force input to the first pendulum member 5, and can cancel a part of the external force input to the first pendulum member 5.

ここで、仮に第1振子部材5および第2振子部材6の間に皿バネ11が無く、一連の接続部材によって連結されている場合を考えると、第1振子部材5に入力された外力は減衰することなくそのまま慣性質量体10に作用し、変位するため、慣性質量体10の往復運動の振幅が大きくなる。これにより、振子ダンパの捩り振動吸収能力、もしくは減衰能力が低下する虞がある。   Here, assuming that there is no disc spring 11 between the first pendulum member 5 and the second pendulum member 6 and they are connected by a series of connecting members, the external force input to the first pendulum member 5 is attenuated. Therefore, the amplitude of the reciprocating motion of the inertial mass body 10 increases because it acts on the inertial mass body 10 as it is and is displaced. As a result, the torsional vibration absorption capability or damping capability of the pendulum damper may be reduced.

しかし、本実施例に係る振子ダンパ1は、上記のように第1振子部材5に入力された外力の一部を打ち消すことができるので、慣性質量体10の変位を抑え、往復運動の振幅増大を低減することができる。これにより、振子ダンパ1の捩り振動吸収能力、もしくは減衰能力を維持することができる。   However, since the pendulum damper 1 according to the present embodiment can cancel a part of the external force input to the first pendulum member 5 as described above, the displacement of the inertial mass body 10 is suppressed and the amplitude of the reciprocating motion is increased. Can be reduced. Thereby, the torsional vibration absorption capability or the damping capability of the pendulum damper 1 can be maintained.

これは、第1振子部材5に対し、第1振子部材5が第2振子部材6から離間するような外力が入力された場合も同様で、皿バネ11は中央部に入力される力と反対向きの反力を外縁部で発生し、第1振子部材5が第2振子部材6から離間するような外力の一部を打ち消すことができる。これにより、振子ダンパ1の捩り振動吸収能力、もしくは減衰能力を維持することができる。   This is the same when an external force that causes the first pendulum member 5 to be separated from the second pendulum member 6 is input to the first pendulum member 5, and the disc spring 11 is opposite to the force input to the center portion. A reaction force in the direction is generated at the outer edge portion, and a part of the external force that causes the first pendulum member 5 to be separated from the second pendulum member 6 can be canceled out. Thereby, the torsional vibration absorption capability or the damping capability of the pendulum damper 1 can be maintained.

また、第1振子部材ではなく、第2振子部材に外力が入力された場合は、皿バネに伝達される力は皿バネの中央部ではなく外縁部に入力されるが、皿バネ11は外縁部に入力される力と反対向きの反力を中央部で発生するため、入力された外力の一部を打ち消すことができる。よって、第2振子部材6に外力が入力された場合でも、第1振子部材5に外力が入力された場合と同様の作用効果を奏する。   In addition, when an external force is input to the second pendulum member instead of the first pendulum member, the force transmitted to the disc spring is input to the outer edge portion instead of the central portion of the disc spring. Since the reaction force in the opposite direction to the force input to the portion is generated in the central portion, a part of the input external force can be canceled out. Therefore, even when an external force is input to the second pendulum member 6, the same effects as when the external force is input to the first pendulum member 5 are obtained.

なお、転動面4はその曲率が次第に変化するような楕円形状やサイクロイド形状によって形成することもでき、転動面4を往復運動する慣性質量体10の移動軌跡における瞬間曲率中心が、慣性質量体10の振幅の大きさに応じて変化するように構成してもよい。   The rolling surface 4 can also be formed in an elliptical shape or a cycloid shape whose curvature gradually changes, and the center of instantaneous curvature in the movement locus of the inertial mass body 10 reciprocating on the rolling surface 4 is the inertial mass. You may comprise so that it may change according to the magnitude | size of the amplitude of the body 10. FIG.

また、皿バネ11は、中央部と外縁部(両端部)で互いに打ち消すような力を発生するような弾性部材であればよく、例えば図6に示すように、渦巻バネ20を用いてもよい。   Moreover, the disc spring 11 should just be an elastic member which generate | occur | produces the force which mutually cancels in a center part and an outer edge part (both ends), for example, as shown in FIG. 6, you may use the spiral spring 20. As shown in FIG. .

また、図3および図4のように第1振子部材5、接続部材11、第2振子部材6の順ではなく、図7および図8のように第1振子部材5、第2振子部材6、皿バネ11(もしくは第2振子部材6、第1振子部材5、皿バネ11)の順に配置されてもよい。   3 and FIG. 4, the first pendulum member 5, the connecting member 11, and the second pendulum member 6 are not in this order, but the first pendulum member 5 and the second pendulum member 6 as shown in FIG. 7 and FIG. The disc springs 11 (or the second pendulum member 6, the first pendulum member 5, and the disc spring 11) may be arranged in this order.

この場合、図3および図4を用いて説明したように、振子ダンパ1の捩り振動吸収能力もしくは減衰能力を維持することができるだけでなく、慣性質量体10が転動面4から離間するほどに過大なショックが入力された場合でも、皿バネ11側から転動面4に衝突することができた場合は衝突時の衝撃を緩衝することができ、慣性質量体10の損傷を抑えることができる。   In this case, as described with reference to FIGS. 3 and 4, not only can the torsional vibration absorbing capability or damping capability of the pendulum damper 1 be maintained, but also the inertial mass body 10 is separated from the rolling surface 4. Even when an excessive shock is input, if the disc spring 11 can collide with the rolling surface 4, the impact at the time of the collision can be buffered and damage to the inertial mass body 10 can be suppressed. .

図1は、本実施形態に係る振子ダンパの全体図を示したものである。FIG. 1 is an overall view of a pendulum damper according to this embodiment. 図2は、本実施形態に係る振子ダンパの一部であって、特に収容室周りを拡大したものである。FIG. 2 is a part of the pendulum damper according to the present embodiment, and is particularly an enlarged view around the accommodation chamber. 図3は、本実施形態に係る振子ダンパを構成する慣性質量体を示したもので、転動面に対して垂直方向から見た図(D矢視図)である。FIG. 3 shows an inertial mass body constituting the pendulum damper according to the present embodiment, and is a view (D arrow view) viewed from a direction perpendicular to the rolling surface. 図4は、本実施形態に係る振子ダンパを構成する慣性質量体を示したもので、転動面に対して水平方向から見た図である(C矢視図)。FIG. 4 shows the inertial mass body that constitutes the pendulum damper according to the present embodiment, and is a view as seen from the horizontal direction with respect to the rolling surface (viewed from arrow C). 図5は、図2におけるA−A´面で切断した断面図であって、第1振子部材を含む収容室内部を示した図(B矢視図)である。FIG. 5 is a cross-sectional view taken along the plane AA ′ in FIG. 2, and is a view (indicated by arrow B) showing the inside of the accommodation chamber including the first pendulum member. 図6は、皿バネの変形例として渦巻状のバネを示したものである。FIG. 6 shows a spiral spring as a variation of the disc spring. 図7は、本実施形態に係る振子ダンパを構成する慣性質量体の変形例を、転動面に対して垂直方向から見た図(D’矢視図)である。FIG. 7 is a view (D ′ arrow view) of a modified example of the inertial mass body constituting the pendulum damper according to the present embodiment as viewed from the direction perpendicular to the rolling surface. 図8は、本実施形態に係る振子ダンパを構成する慣性質量体の変形例を、転動面に対して水平方向から見た図(C’矢視図)である。FIG. 8 is a diagram (C ′ arrow view) of a modified example of the inertial mass body constituting the pendulum damper according to the present embodiment viewed from the horizontal direction with respect to the rolling surface.

1…振子ダンパ、2…回転部材、3…収容室、4…転動面、5…第1振子部材、6…第2振子部材、10…慣性質量体、11…皿バネ、12…接続部材、13…ピン、14…転動中心軸、15…連結部、16…接続部材、17…ピン、18…転動中心軸、19…連結部、20…渦巻バネ DESCRIPTION OF SYMBOLS 1 ... Pendulum damper, 2 ... Rotating member, 3 ... Accommodating chamber, 4 ... Rolling surface, 5 ... 1st pendulum member, 6 ... 2nd pendulum member, 10 ... Inertial mass body, 11 ... Disc spring, 12 ... Connection member , 13 ... pin, 14 ... rolling center axis, 15 ... connecting part, 16 ... connecting member, 17 ... pin, 18 ... rolling center axis, 19 ... connecting part, 20 ... spiral spring

Claims (1)

回転部材と、
前記回転部材の回転中心から外周側に離れた場所に設けられた収容室と、
前記収容室に収容され、前記収容室を構成する内壁面の一部である転動面に沿って往復運動をする振子部材と
を備える振子ダンパにおいて、
前記振子部材は、
第1振子部材と、
第2振子部材と、
中央部と外縁部のうちいずれか一方に入力された外力の反力を外力が入力されていない方の部位で発生する弾性部材と、
前記第1振子部材および第2振子部材を前記転動面に沿って回転可能に保持し、かつ前記弾性部材と接続する接続部材と
を備えることを特徴とする振子ダンパ。
A rotating member;
A storage chamber provided at a location away from the rotation center of the rotating member toward the outer peripheral side;
A pendulum damper comprising: a pendulum member housed in the housing chamber and reciprocating along a rolling surface which is a part of an inner wall surface constituting the housing chamber;
The pendulum member is
A first pendulum member;
A second pendulum member;
An elastic member that generates a reaction force of an external force input to one of the center portion and the outer edge portion at a portion where the external force is not input;
A pendulum damper comprising: a connecting member that holds the first pendulum member and the second pendulum member rotatably along the rolling surface and connects to the elastic member.
JP2012011388A 2012-01-23 2012-01-23 Pendulum damper Pending JP2013148211A (en)

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
WO2015108130A1 (en) * 2014-01-17 2015-07-23 アイシン・エィ・ダブリュ株式会社 Centrifugal pendulum vibration absorber and degree-setting method therefor
DE102015121624A1 (en) 2014-12-16 2016-06-16 Toyota Jidosha Kabushiki Kaisha Torsional reducing device
DE102015120943A1 (en) 2014-12-16 2016-06-16 Toyota Jidosha Kabushiki Kaisha Torsionsschwingungsreduziervorrichtung
CN108825720A (en) * 2018-06-21 2018-11-16 上海大学 A kind of nonlinear torsion dashpot of use in elastic construction end
CN110116423A (en) * 2019-06-19 2019-08-13 重庆大学 A kind of transmission shaft protection device, walking robot joint structure and walking robot

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2015108130A1 (en) * 2014-01-17 2017-03-23 アイシン・エィ・ダブリュ株式会社 Centrifugal pendulum vibration absorber and order setting method thereof
US10132384B2 (en) 2014-01-17 2018-11-20 Aisin Aw Co., Ltd. Centrifugal pendulum-type vibration absorbing device and order setting method for the same
WO2015108130A1 (en) * 2014-01-17 2015-07-23 アイシン・エィ・ダブリュ株式会社 Centrifugal pendulum vibration absorber and degree-setting method therefor
CN105899842A (en) * 2014-01-17 2016-08-24 爱信艾达株式会社 Centrifugal pendulum vibration absorber and degree-setting method therefor
US9803718B2 (en) 2014-12-16 2017-10-31 Toyota Jidosha Kabushiki Kaisha Torsional vibration reducing device
US9739341B2 (en) 2014-12-16 2017-08-22 Toyota Jidosha Kabushiki Kaisha Torsional vibration reducing device
DE102015120943A1 (en) 2014-12-16 2016-06-16 Toyota Jidosha Kabushiki Kaisha Torsionsschwingungsreduziervorrichtung
DE102015121624A1 (en) 2014-12-16 2016-06-16 Toyota Jidosha Kabushiki Kaisha Torsional reducing device
DE102015120943B4 (en) * 2014-12-16 2021-07-01 Toyota Jidosha Kabushiki Kaisha Torsional vibration reducing device
CN108825720A (en) * 2018-06-21 2018-11-16 上海大学 A kind of nonlinear torsion dashpot of use in elastic construction end
CN108825720B (en) * 2018-06-21 2020-05-19 上海大学 Nonlinear torsion vibration absorber used at end part of elastic structure
CN110116423A (en) * 2019-06-19 2019-08-13 重庆大学 A kind of transmission shaft protection device, walking robot joint structure and walking robot
CN110116423B (en) * 2019-06-19 2024-02-27 重庆大学 Transmission shaft protection device, walking robot joint structure and walking robot

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