17883925. SOUND ABSORBING DEVICES AND ACOUSTIC RESONATORS DECORATED WITH FABRIC simplified abstract (TOYOTA JIDOSHA KABUSHIKI KAISHA)

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SOUND ABSORBING DEVICES AND ACOUSTIC RESONATORS DECORATED WITH FABRIC

Organization Name

TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor(s)

Yuyang Song of Ann Arbor MI (US)

Taehwa Lee of Ann Arbor MI (US)

SOUND ABSORBING DEVICES AND ACOUSTIC RESONATORS DECORATED WITH FABRIC - A simplified explanation of the abstract

This abstract first appeared for US patent application 17883925 titled 'SOUND ABSORBING DEVICES AND ACOUSTIC RESONATORS DECORATED WITH FABRIC

Simplified Explanation

The patent application describes a sound absorbing device with an acoustic resonator and a fabric layer containing reversible actuatable liquid crystal elastomer (LCE) fibers that change pore size based on temperature. The device includes a heater to decrease pore size and a cooler to increase pore size, controlled by a controller.

  • The device includes an acoustic resonator with an opening.
  • The fabric layer across the opening contains reversible actuatable LCE fibers.
  • The average pore size of the fabric layer increases with decreasing temperature and decreases with increasing temperature.
  • A heater is included to decrease the average pore size of the fabric layer.
  • A cooler is included to increase the average pore size of the fabric layer.
  • A controller commands the heater and cooler based on temperature changes.

Potential applications of this technology:

  • Soundproofing in buildings, vehicles, and industrial equipment.
  • Noise reduction in appliances, machinery, and electronic devices.

Problems solved by this technology:

  • Providing a versatile and efficient sound absorbing solution.
  • Allowing for adjustable sound absorption based on temperature changes.

Benefits of this technology:

  • Improved sound absorption performance.
  • Energy-efficient operation with temperature-controlled pore size adjustments.
  • Versatile application in various industries for noise reduction.


Original Abstract Submitted

A sound absorbing device includes an acoustic resonator with an opening and at least one fabric layer extending across the opening. The at least one fabric layer includes reversible actuatable liquid crystal elastomer (LCE) fibers such that an average pore size of the at least one fabric layer increases with decreasing temperature and decreases with increasing temperature. The sound absorbing device also includes at least one of a heater configured to heat the at least one fabric layer such that the average pore size of the at least one fabric decreases and a cooler configured to cool the at least one fabric layer such that the average pore size of the at least one fabric increases. And in some variations a controller configured to command the heater to heat to the at least one fabric layer and command the cooler to cool the at least one fabric layer is included.

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