Unlock instant, AI-driven research and patent intelligence for your innovation.

Sound-reducing or vibration-attenuating devices and structural members

A vibration attenuation, sound technology, applied in vibration suppression adjustment, non-rotation vibration suppression, shock absorber, etc., can solve the problem of generating opposite phases, complex and so on

Active Publication Date: 2018-11-13
THK CO LTD
View PDF10 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sound-reducing or vibration-attenuating devices and structural members
  • Sound-reducing or vibration-attenuating devices and structural members
  • Sound-reducing or vibration-attenuating devices and structural members

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides a sound reduction or vibration damping device with a new sound reduction principle which is different from existing passive or active sound reduction devices. The sound reduction or vibration attenuation device (1) of the present invention has: a mass portion (11); a spring portion (12a, 12b) between the mass portion (11) and the structural member (13); and the spring portion (12a , 12b) The control part (4) whose spring constant changes continuously. The sound reduction or vibration attenuation device (1) of the present invention is assembled on the structural member (13), and is used to reduce the sound transmitted through the structural member (13) or the sound generated by the structural member, or to attenuate 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
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