Cushion pad deformation detection system and production method therefor

A manufacturing method and technology of cushioning pads, applied in the field of deformation systems, can solve the problems of surface layer configuration of difficult-to-cushion materials, decreased configuration detection accuracy, foreign body sensation, etc., and achieve excellent self-adhesion, good riding experience, and less falling off. Effect

Inactive Publication Date: 2017-02-22
TOYO TIRE & RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This device also obviously uses a permanent magnet, so it feels like a foreign body, so it is difficult to place it on the surface of the cushioning material
In addition, the detection accuracy of placement in the inner layer of the buffer also decreases.

Method used

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  • Cushion pad deformation detection system and production method therefor
  • Cushion pad deformation detection system and production method therefor
  • Cushion pad deformation detection system and production method therefor

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0073] Manufacturing example 1 Synthesis of isocyanate-terminated prepolymer A

[0074] 85.2 parts by weight of polyol A (polyoxypropylene glycol to which propylene oxide was added with glycerin as an initiator, OH value 56, number of functional groups 3) was added to the reaction vessel, and vacuum dehydration was performed for 1 hour while stirring. Thereafter, the inside of the reaction container was replaced with nitrogen. Next, 14.8 parts by weight of toluene diisocyanate (manufactured by Mitsui Chemicals Co., Ltd., 2,4 type = 100%, NCO% = 48.3%) was added to the reaction vessel, and reacted for 3 hours while keeping the temperature in the reaction vessel at 80°C. Isocyanate-terminated prepolymer A (NCO% = 3.58%) was synthesized.

manufacture example 2

[0075] Manufacturing example 2 Synthesis of isocyanate-terminated prepolymer B

[0076] 81.2 parts by weight of polyol C (polyoxypropylene glycol to which propylene oxide was added with pentaerythritol as an initiator, OH value 75, number of functional groups 3) was added to the reaction vessel, and dehydration under reduced pressure was carried out for 1 hour while stirring. Thereafter, the inside of the reaction container was replaced with nitrogen. Next, 18.8 parts by weight of toluene diisocyanate (manufactured by Mitsui Chemicals Co., Ltd., 2,4 type = 100%, NCO% = 48.3%) was added to the reaction vessel, and reacted for 3 hours while keeping the temperature in the reaction vessel at 80°C. Isocyanate-terminated prepolymer B (NCO% = 4.55%) was synthesized.

Embodiment 1

[0078] Next, a neodymium-based filler (manufactured by Aichi Steel Works, MF-15P, average particle diameter 133 μm) to 730.3 parts by weight to prepare a filler dispersion. The filler dispersion liquid was degassed under reduced pressure, and 100.0 parts by weight of the above-mentioned prepolymer A which had also been degassed under reduced pressure was added, and mixed and defoamed using a planetary mixer (manufactured by Shinki Co., Ltd.). The reaction liquid was dropped from 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, 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., Ltd.).

[0079] The portion other than the seating surface of the obtained magnetic elastic body was abraded with #400 sandpape...

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PUM

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Abstract

The purpose of the present invention is to improve cushion pad durability and obtain a product that does not cause the feeling that a foreign body is present. The present invention provides a cushion pad deformation detection system that comprises: a cushion pad comprising a magnetic elastomer in which a magnetic filler is dispersed in an elastomer and the arithmetic mean roughness (Ra) is 0.5-10 [mu]m and a soft polyurethane foam that is integrated with the magnetic elastomer by bonding; and a magnetic sensor that detects a magnetic change that is caused by deformation of the cushion pad. The present invention also provides a production method for the cushion pad deformation detection system.

Description

technical field [0001] The present invention relates to a system for detecting deformation of a cushion, and in particular 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 a system that normally detects a person's seating and issues a warning when a 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 though a person is seated. Since the seating sensor must detect every sitting of a person, high durability is required. In addition, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/24B60N2/44G01D5/12B60N2/90
CPCG01D5/12G01B7/24B60N2/70G01D5/145B60N2/002B60N2/90B60R22/48B60R2022/4816B60R2022/4858
Inventor 福田武司重藤纯一小野洋明
Owner TOYO TIRE & RUBBER CO LTD
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