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Deformation detection sensor and manufacturing method thereof

A technology for detecting sensors and manufacturing methods, which is applied in the direction of instruments, measuring forces, and measuring devices, and can solve problems such as poor detection accuracy, foreign body sensation, and difficult surface configuration of cushioning materials, and achieve less foreign body sensation, simple manufacturing, and excellent performance. Effects of Stability and Sensitivity

Inactive Publication Date: 2017-12-01
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, which has a foreign body feeling, so it is difficult to arrange the surface layer of the cushioning material
In addition, the arrangement of the buffer inner layer also causes poor detection accuracy.

Method used

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  • Deformation detection sensor and manufacturing method thereof
  • Deformation detection sensor and manufacturing method thereof
  • Deformation detection sensor and manufacturing method thereof

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 obtained by adding glycerol to an initiator with propylene oxide, OH value 56, number of functional groups 3, manufactured by Asahi Glass Co., Ltd., EX-3030) was placed in a reaction container, and While stirring, dehydration under reduced pressure was carried out for 1 hour. Thereafter, the inside of the reaction container was replaced with nitrogen. Next, 14.8 parts by weight of toluene diisocyanate (manufactured by Mitsui Chemicals, Inc., 2,4-body = 80%, NCO% = 48.3%) was added to the reaction container, and the temperature in the reaction container was kept at 80°C. After reacting for 5 hours, isocyanate-terminated prepolymer A (NCO%=3.58%) was synthesized.

manufacture example 2

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

[0076] 85.2 parts by weight of polyol C (polyether-modified main chain type reactive silicone, OH value 56, number of functional groups 2, manufactured by Shin-Etsu Chemical Co., Ltd., X-22-4272) was put into the reaction vessel, and stirred. Dehydration under reduced pressure was carried out for 1 hour. Thereafter, the inside of the reaction container was replaced with nitrogen. Next, 14.8 parts by weight of toluene diisocyanate (manufactured by Mitsui Chemicals, Inc., 2,4-body = 80%, NCO% = 48.3%) was added to the reaction container, and the temperature in the reaction container was kept at 80°C. After reacting for 5 hours, isocyanate-terminated prepolymer B (NCO%=3.58%) was synthesized.

Embodiment 1

[0078] Next, 106.5 parts by weight of polyol C (polyether-modified main chain type reactive silicone, OH value 56, number of functional groups 2, Shin-Etsu Chemical Co., Ltd., X-22-4272) and bismuth octoate (Nippon Chemical Industry Co., Ltd. 31.0 parts by weight of toluene was added to 0.24 parts by weight of PUCAT 25 manufactured by Co., Ltd., and 206.5 parts by weight of neodymium-based filler (NdFeB magnetic powder, manufactured by Aichi Steel Co., Ltd., MF-15P, with an average particle size of 133 μm) was added. , to prepare filler dispersion. Separately, 100.0 parts by weight of the prepolymer A was dissolved in 31.0 parts by weight of toluene to prepare a prepolymer solution. The above-mentioned filler dispersion liquid was added to the prepolymer solution, and mixed and defoamed with a rotary revolution mixer (manufactured by THINKY Co., Ltd.). This reaction solution was dropped on a release-treated PET film having a spacer of 1.0 mm, and adjusted to a thickness of 1....

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Abstract

The invention discloses a deformation detection sensor and a manufacturing method thereof. The purpose of the present invention is to provide a deformation detection sensor which maintains stability and sensitivity over a wide temperature range (for example, -20 DEG C to +80 DEG C). This deformation detection sensor is provided with: a cushion pad which comprises a magnetic resin comprising a magnetic filler dispersed in a resin, and a polymer foam body in a portion of which said magnetic resin is present; and a magnetic sensor which detects magnetic changes due to deformation of said cushion pad, wherein the deformation detection sensor is characterized in that the magnetic resin has a glass transition point (Tg) of less than or equal to -30 DEG C. A manufacturing method of this deformation detection sensor is also provided.

Description

technical field [0001] The present invention relates to a deformation detection sensor, especially a deformation detection sensor suitable for detecting whether a person sits on a seat of a vehicle, and a manufacturing method thereof. Background technique [0002] In vehicles such as automobiles, an alarm system that detects whether a person is seated and is wearing a seat belt, and warns if a person is not wearing a seat belt is already in practical use. The system usually checks that the person is seated and, if seated, warns if the seat belt is not worn. This device uses a combination of a seating sensor that detects whether a person is seated and a device that detects that a seat belt is fastened to a buckle, and even if a person is seated, a warning is issued when the seat belt is not fastened to the buckle. Since the seating sensor has to detect how many times a person sits and lies down, high durability is required. In addition, when people are sitting or lying down...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60N2/44A47C7/18B60N2/90
CPCG01L1/122G01L5/228B60N2/7017B60N2/0031B60N2/0021B60N2210/16B60R21/01516G01L1/12
Inventor 福田武司太田贵启
Owner TOYO TIRE & RUBBER CO LTD