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Sound reduction or vibration damping device and structural member

A technology of vibration attenuation and sound, applied in the direction of vibration suppression adjustment, non-rotational vibration suppression, shock absorber, etc., can solve the problems of generating opposite phases, complex problems, etc.

Active Publication Date: 2016-02-17
THK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there are also problems in that an electronic circuit for complex signal processing is required, and it is difficult to generate a signal of opposite phase using an electronic circuit when the sound has multiple frequency components.

Method used

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  • Sound reduction or vibration damping device and structural member
  • Sound reduction or vibration damping device and structural member
  • Sound reduction or vibration damping device and structural member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Experiments were conducted to confirm the damping effect of the sound reduction or vibration damping device 1 of this embodiment. Such as Figure 12 As shown, the armature portion 6 of the sound reduction or vibration attenuation device 1 is fixed, and a leaf spring 15 made of a thin steel plate is installed at the front end of the output shaft 5 . A weight 16 is attached to the lower end of the plate spring 15, and a part of the weight 16 is hit with a hammer to make the weight 16 vibrate freely. The free vibration of the weight 16 was measured with a laser length measuring device.

[0068] Figure 13 The measurement result of the vibration of the weight 16 is shown. (1) in the figure represents the case of the weight being 0g, (2) in the figure represents the case of the weight being 3g, (3) in the figure represents the case of the weight being 6g, and (4) in the figure represents the case of the weight being 12g Condition. The right column in the figure shows th...

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PUM

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Abstract

Provided is a sound reduction or vibration damping device having a new sound control principle totally different from the sound control principles of conventional passive or active sound control devices. This sound reduction or vibration damping device (1) is provided with a mass part (11), a spring part (12a, 12b) interposed between the mass part (11) and a structural member (13), and a control unit (4) which continues to change the spring constant of the spring part (12a, 12b). This sound reduction or vibration damping device (1) is mounted to the structural member (13), and reduces sound transmitted through the structural member (13) or sound generated from the structural member, or damps the vibration of the structural member (13).

Description

technical field [0001] The present invention relates to a sound reduction or vibration attenuation device that is mounted on a structural member and reduces sound transmitted through the structural member or sound generated by the structural member, or attenuates vibration of the structural member. Background technique [0002] Conventionally, there are known soundproof walls that reduce sound transmitted through structural members. Soundproof walls are installed on roads, railways, factories, etc. to prevent noise generated by noise sources such as motor vehicles from leaking to the surrounding area. In addition, there are also known sound or vibration reducing devices that reduce the sound generated by structural members of various equipment such as air conditioners, printers, and copiers, or reduce the vibration of structural members. [0003] In a typical soundproof wall, sound or vibration reduction device, a passive (passive) noise reduction is used that reduces sound...

Claims

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Application Information

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IPC IPC(8): F16F15/02F16F15/03G10K11/178
CPCF16F7/1011F16F15/035F16F2222/06F16F2224/0283G10K11/175G10K2210/1291F16F7/104F16F15/005F16F15/007F16F15/02F16F15/03
Inventor 岩城纯一郎
Owner THK CO LTD
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