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Sensor and manufacturing method for same

A manufacturing method and sensor technology, which can be applied to instruments, other household appliances, household components, etc., can solve the problems of difficult movement of magnets, deterioration of detection sensitivity, peeling, etc., and achieve the effect of high sensitivity

Inactive Publication Date: 2015-06-24
TOYO TIRE & RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of a large magnet, there is a problem that it is difficult to detect deformation due to contact and foreign body sensation upon contact
On the other hand, in the case of uniformly dispersed small magnets, even though the directions of the magnetic forces of each magnet are the same as each other, a phenomenon of magnetic force cancellation occurs between magnet particles, and the magnets near the contact surface move while inside the buffer portion there is The magnet is difficult to move, so there is a problem that when the external force is small and the deformation is very small, the detection sensitivity deteriorates
Therefore, since the magnetic force cancellation phenomenon occurs between the magnet particles, and the magnet near the contact surface moves while the magnet existing inside the buffer portion hardly moves, there is a problem that when the external force is small and the deformation is very small as described in Patent Document 1 , the detection sensitivity deteriorates
In the pressure-sensitive sensor, since the elastic material is separated from the magnet-containing material, it is necessary to "stack and fix" them sequentially, and there is a problem that in addition to the need for a lamination step, the above-mentioned damage caused by lamination is caused. Delamination of layer interface
In order to measure the electromotive force, it is necessary to install electrodes directly connected to the flexible element, so there is a problem that peeling, etc., easily occurs on the bonding surface between the element and the electrode
Since a disk-shaped solid magnet is used, there is a problem that it is not flexible

Method used

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  • Sensor and manufacturing method for same
  • Sensor and manufacturing method for same
  • Sensor and manufacturing method for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] In the reaction vessel, add 40 parts by mass of polypropylene glycol with the trade name "Preminol 7001" (number average molecular weight 6000) purchased from Asahi Glass Co., Ltd. and 60 parts by mass of the trade name "Excenol 3020" purchased from Asahi Glass Co., Ltd. "(Number average molecular weight 3000) polypropylene glycol, stirring and dehydrating 1 hour under reduced pressure. Then, the inside of the reaction vessel was purged with nitrogen. Then, 10 parts by mass of toluene diisocyanate (TDI-80, 2,4-toluene diisocyanate / 2,6-toluene diisocyanate / 2,6-toluene diisocyanate purchased from Mitsui Chemicals Co., Ltd. diisocyanate=80 / 20 mixture), the temperature in the reaction vessel was kept at 80° C., and it was allowed to react for 5 hours, thereby synthesizing an isocyanate-terminated prepolymer.

[0111] Next, as shown in Table 1 below, 33 parts by mass of polypropylene glycol with the trade name "Preminol 7001" (number average molecular weight 6000) purchased...

Embodiment 2

[0114] A urethane elastomer was obtained in the same manner as in Example 1, except that samarium-based magnet powder (SmFeN alloy fine powder manufactured by Sumitomo Metal Mining Co., Ltd., average particle diameter: 2.5 μm) was used as the magnetic filler.

[0115] Using the resulting urethane elastomer, as described in Example 1, the unevenness distribution and sensor sensitivity were measured. The results are shown in Table 1.

Embodiment 3

[0117] Add 50 parts by mass of two-component liquid siloxane rubber main reagent (commercial name "DY35-1106A" purchased from Dow Corning Toray Co., Ltd.) as a precursor of siloxane, 100 parts by mass part of magnetic filler and 60 parts by mass of toluene, and stirred and degassed at room temperature under reduced pressure for 60 minutes to obtain a premixed solution. 50 parts by mass of a curing agent component of two-component liquid silicone rubber (available from Dow Corning Toray Co., Ltd. under the trade name "DY35-1106B") and 60 parts by mass were added as another silicone precursor. parts by mass of toluene, and stirred and degassed under reduced pressure for 60 minutes to obtain another premixed solution. Subsequently, the two premixed solutions were mixed and degassed with a mixer, thereby obtaining a mixed solution. The mixed solution was dropped onto the mold after the release treatment, and the polyethylene terephthalate film after the release treatment was cove...

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Abstract

The purpose of the present invention is to provide sensors, including tactile sensors and flex sensors, that have low manufacturing costs, high manufacturing efficiency, and improved sensor sensitivity, and a manufacturing method for same. The present invention pertains to sensors, including tactile sensors and flex sensors, comprising an elastomer containing a magnetic filler and a magnetic sensor for detecting magnetic variation caused by elastomer deformation, and to a manufacturing method for same for which the viscosity of the mixture of the magnetic filler and an elastomer precursor solution is defined to be within a specific range.

Description

technical field [0001] The present invention relates to a sensor for detecting deformation caused by contact with a magnetic elastomer containing a magnetic filler and a method of manufacturing the same. In particular, the present invention relates to a tactile sensor for detecting deformation caused by contact with a magnetic elastic body in which magnetic fillers are unevenly distributed; a tactile sensor for detecting bending deformation of a magnetic elastic body containing magnetic fillers A bend sensor; and a method of making the same. Background technique [0002] Tactile sensors are widely used in various fields. Basically, these sensors detect the intensity, position, direction, etc. of the contact when one object is in contact with another object. The tactile sensor is applied to, for example, a robot's hand and skin, etc., and is used as information to determine the robot's next move. In addition, tactile sensors are also used to detect the sitting state of car...

Claims

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Application Information

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IPC IPC(8): G01L1/12G01B7/28G01L1/04G01L5/00
CPCG01B7/24G01B7/28G01L1/04G01L1/12B29C35/02B29K2075/00B29K2083/005B29K2505/12B29L2031/752
Inventor 重藤纯一福田武司小野洋明罗志伟
Owner TOYO TIRE & RUBBER CO LTD
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