JP2015206381A5

JP2015206381A5 -

Info

Publication number: JP2015206381A5
Application number: JP2014085705A
Authority: JP
Filing date: 2014-04-17
Publication date: 2017-02-23
Anticipated expiration: 2034-04-17

Description

本発明の回転マスダンパーは、粘性流体が充填されたシリンダを有するダンパー本体と、前記ダンパー本体に対して進退する可動ロッドと、前記シリンダ内を一対の圧力室に区画すると共に前記可動ロッドの進退に伴って当該シリンダ内を移動するピストンと、前記一対の圧力室の間で粘性流体を流動させ、流路断面積に応じた粘性減衰効果を与えると共に、前記シリンダ内におけるピストンの位置に応じて粘性流体の移動が制限される複数のバイパス通路と、少なくとも一つのバイパス通路に設けられて前記粘性流体の流動を回転運動に変換する運動変換機構と、この運動変換機構によって回転を与えられる付加錘と、を備えている。 A rotary mass damper according to the present invention includes a damper main body having a cylinder filled with a viscous fluid, a movable rod that moves forward and backward with respect to the damper main body, a cylinder that is partitioned into a pair of pressure chambers, and the movable rod is advanced and retracted. Accordingly, a viscous fluid is caused to flow between the piston moving in the cylinder and the pair of pressure chambers, and a viscous damping effect corresponding to the cross-sectional area of the flow path is given , and depending on the position of the piston in the cylinder A plurality of bypass passages in which the movement of the viscous fluid is restricted, a motion conversion mechanism that is provided in at least one bypass passage and converts the flow of the viscous fluid into a rotational motion, and an additional weight that is rotated by the motion conversion mechanism And.

Claims

A damper body having a cylinder filled with a viscous fluid;
A movable rod that moves forward and backward with respect to the damper body;
A piston that divides the cylinder into a pair of pressure chambers and moves in the cylinder as the movable rod advances and retreats;
A plurality of bypasses that cause viscous fluid to flow between the pair of pressure chambers , provide a viscous damping effect according to the cross-sectional area of the flow path, and restrict movement of the viscous fluid according to the movement position of the piston in the cylinder A passage,
A motion conversion mechanism provided in at least one bypass passage for converting the flow of the viscous fluid into a rotational motion;
An rotary mass damper comprising: an additional weight that is rotated by the motion conversion mechanism.

2. The rotary mass damper according to claim 1, wherein a position where each bypass passage communicates with the cylinder is different for each bypass passage along a moving direction of the piston in the cylinder.

The one of the plurality of bypass passages communicates with the cylinder at both ends of the cylinder in the moving direction of the piston, and the motion conversion mechanism is provided in the bypass passage. Rotating mass damper.

The flow rate of the viscous fluid flowing through the bypass passage provided with the motion conversion mechanism increases as the piston advances from the center of the moving range in the cylinder toward the end of the cylinder. Item 4. The rotating mass damper according to Item 3.

One of the plurality of bypass passages communicates with the cylinder closer to the center of the piston movement range than the bypass passage provided with the motion conversion mechanism, and the communication position is the center of the piston movement range. The rotary mass damper according to claim 4, wherein the rotary mass damper is located at an equal distance from the center.

The rotary mass damper according to claim 5, wherein a valve that closes the bypass passage as the piston passes is provided in a bypass passage other than the bypass passage provided with the motion conversion mechanism.

Compared to the forward stroke in which the piston travels from the center of the moving range to the end of the cylinder in the cylinder, the movement conversion mechanism is used in the return stroke from the end of the cylinder to the center of the moving range. The rotary mass damper according to claim 3, wherein the flow rate of the viscous fluid flowing in the provided bypass passage is increased.

A pair of bypass passages are provided across the center of the movement range of the piston in the cylinder separately from the bypass passage provided with the motion conversion mechanism,
The rotary mass damper according to claim 7, wherein each of the pair of bypass passages is provided with a check valve that closes the bypass passage during a return stroke of the piston.

The rotary mass damper according to claim 8, wherein a flow passage cross-sectional area of the bypass passage provided with the check valve is larger than a flow passage cross-sectional area of the bypass passage provided with the motion conversion means.