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System for detecting deformation in cushion pad and method for manufacturing same

A manufacturing method and technology of cushioning pads, applied in the field of deformed systems, can solve problems such as difficulty in disposing the surface of cushioning materials, deterioration of detection accuracy, foreign body sensation, etc., and achieve good riding experience, simple manufacturing, and less peeling.

Inactive Publication Date: 2017-02-15
TOYO TIRE & RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This device is also a device that obviously uses a permanent magnet, and it feels like a foreign body, so it is difficult to arrange it on the surface of the cushioning material
In addition, if it is arranged in the inner part of the buffer, the detection accuracy will also deteriorate

Method used

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  • System for detecting deformation in cushion pad and method for manufacturing same
  • System for detecting deformation in cushion pad and method for manufacturing same
  • System for detecting deformation in cushion pad and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0065] Manufacturing example 1 Synthesis of isocyanate-terminated prepolymer A

[0066] Add 85.2 parts by mass of polyol A (polyoxypropylene glycol with propylene oxide added to glycerol as an initiator, OH value 56, functional group number 3) in the reaction vessel, and carry out dehydration under reduced pressure for 1 hour while stirring . Thereafter, the inside of the reaction container was replaced with nitrogen. Next, 14.8 parts by mass of toluene diisocyanate (manufactured by Mitsui Chemicals, Inc., 2,4-type = 100%, NCO% = 48.3%) was added to the reaction container, and the reaction was carried out for 3 hours while keeping the temperature in the reaction container at 80°C. Whereas, isocyanate-terminated prepolymer A (NCO%=3.58%) was synthesized.

manufacture example 2

[0067] Manufacturing example 2 Synthesis of isocyanate-terminated prepolymer B

[0068] 81.2 parts by mass of polyol C (polyoxypropylene glycol to which propylene oxide was added using pentaerythritol as an initiator, OH value 75, number of functional groups 3) was added to a reaction vessel, and vacuum dehydration was performed for 1 hour while stirring. Thereafter, the inside of the reaction container was replaced with nitrogen. Next, 18.8 parts by mass of toluene diisocyanate (manufactured by Mitsui Chemicals, Inc., 2,4-type = 100%, NCO% = 48.3%) was added to the reaction container, and the reaction was carried out for 3 hours while keeping the temperature in the reaction container at 80°C. Whereas, isocyanate-terminated prepolymer B (NCO%=4.55%) was synthesized.

Embodiment 1

[0070] Next, a neodymium-based filler (manufactured by Aichi Steel Works, MF-15P, average Particle size: 133 μm) 631.2 parts by mass to prepare a filler dispersion. This filler dispersion was defoamed under reduced pressure, and 100.0 parts by mass of the above-mentioned prepolymer A, which had also been defoamed under reduced pressure, was added, and mixed and defoamed using a planetary mixer (manufactured by Shinki Co., Ltd.). The reaction liquid was dropped onto a release-treated PET film having a spacer of 1.0 mm, and adjusted to a thickness of 1.0 mm using a nip roller. Thereafter, as a bias treatment of the magnetic filler, the magnetic filler was precipitated by standing at room temperature for 30 minutes. Thereafter, curing was performed at 80° C. for 1 hour to obtain a filler-dispersed polyurethane elastomer. A magnetic elastic body was obtained by magnetizing the obtained elastic body at 1.3 T in a magnetization device (manufactured by Denki Magnetic Industry Co., ...

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PUM

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Abstract

The purpose of the present invention is to obtain a cushion pad with improved durability and in which a foreign object sensation is not produced therein. The present invention provides a system for detecting deformation in a cushion pad, the system comprising: a cushion pad that includes a magnetic elastomer in which a magnetic filler is dispersed in an elastomer, and a soft foamed polyurethane provided integrally with the magnetic elastomer by self-adhesion thereto; and a magnetic sensor that detects changes in magnetism resulting from deformation of the cushion pad.

Description

technical field [0001] The present invention relates to a system for detecting deformation of a cushion, and particularly to a system for detecting whether a person is seated on a seat, and a method for manufacturing the same. Background technique [0002] In vehicles such as automobiles, a warning system that detects whether a seat belt is worn by a person sitting on the seat and issues a warning when the seat belt is not worn has been put into practical use. This system is generally a system that detects the seating of a person and issues a warning when the seat belt is not worn even if the person is seated. This device combines a seat occupancy sensor that detects whether a person is seated and a device that detects that the seat belt is fastened to the buckle, and uses a device that warns when the seat belt is not fastened to the buckle even if a person is seated. Since the seating sensor must detect every sitting of a person, high durability is required. In addition, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60N2/44A47C7/62G01B7/16B60N2/90
CPCB60N2/002B60N2/7017G01B7/24
Inventor 福田武司重藤纯一小野洋明
Owner TOYO TIRE & RUBBER CO LTD
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