Sensor and its manufacturing method

A manufacturing method and sensor technology, applied in the field of sensors, can solve problems such as difficulty in detecting deformation, deterioration in detection sensitivity, and difficulty in moving a magnet, and achieve the effect of improving sensitivity and accuracy

Inactive Publication Date: 2017-08-15
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 caused by contact, and a foreign body sensation occurs when touched
On the other hand, in the case of uniformly dispersed small magnets, since even if the magnetic force direction of each magnet is the same as each other, a magnetic force cancellation phenomenon still occurs between the magnet particles, and the magnet near the contact surface moves to exist inside the buffer 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, as described in Patent Document 1, since the magnetic force cancellation phenomenon occurs between the magnet particles, and the magnet particles in the vicinity of the contact surface move and the magnet particles existing inside the buffer portion are difficult to move, there is a problem that when the external force is small, the deformation is very large. hours, the detection sensitivity deteriorates
Patent Document 3 discloses that the above-mentioned porous polymer containing ferromagnetic particles is used as a vibration sensor, but does not show performance data such as sensor sensitivity, etc.
In addition, Patent Document 3 does not disclose the specific production method of the above-mentioned porous polymer and the characteristics of the above-mentioned porous polymer.

Method used

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  • Sensor and its manufacturing method

Examples

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preparation example Construction

[0062] As methods for preparing urethane resin foams, conventionally there are chemical foaming methods in which reactive foaming agents such as water are used; and mechanical foaming methods in which polyisocyanate components and reactive The mixture of hydrogen component and catalyst is mechanically stirred. It is well known that the molding operation in the above-mentioned mechanical foaming method is simpler than that in the above-mentioned chemical foaming method, and because water is not used as a foaming agent, no urea groups are generated, so that the physical properties are not reduced, and the mechanical foaming method Molded articles having excellent toughness, excellent resilience, and the like can be obtained. However, in the case of molded articles obtained by the above-mentioned mechanical foaming method, since it is difficult to maintain air bubbles in the reaction mixture solution, the resulting molded article has too high a density and has a problem of low fl...

Embodiment 1

[0080] Add 40 parts by mass of polypropylene glycol (number average molecular weight 6000, trifunctional) purchased from Asahi Glass Co., Ltd. under the trade name "Preminol 7001" and 60 parts by mass of purchased from Asahi Glass Co., Ltd. under the trade name "Preminol 7001" in the reaction vessel. Excenol 3020 "polypropylene glycol (number average molecular weight 3000, bifunctionality), and stirring dehydration under reduced pressure 1 hour. Then, the inside of the reaction vessel was replaced with nitrogen. Then, 10 parts by mass of diphenylmethane diisocyanate purchased from Japan Polyurethane Industry Co., Ltd. under the trade name "MillionateMT" was added to the reaction vessel, and the temperature in the reaction vessel was kept at 80° C., allowing it to react for 5 hours to synthesize Urethane prepolymer A containing isocyanate groups.

[0081] Then, as shown in Table 1 below, by adding 46.2 parts by mass of polypropylene glycol (number-average molecular weight of 6...

Embodiment 2

[0084] A magnetic urethane resin foam was prepared in the same manner as in Example 1 except that the above-mentioned primary stirring time was 20 minutes.

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Abstract

The present invention provides a sensor having an improved sensitivity and precision, which is lighter and more flexible than conventional sensors, and a method of making the sensor. The present invention relates to a sensor comprising a resin foam containing a magnetic filler, and a magnetic sensor that detects a magnetic change caused by a deformation of the resin foam, wherein the resin foam is a polyurethane resin foam that comprises a polyisocyanate component, an active hydrogen component, a catalyst and a foam stabilizer, and wherein the resin foam has a hardness change (H 1 -H 60 ) of 0 to 10 between a JIS-C hardness (H 1 ) in one second after contact with a pressure surface of a hardness tester and a JIS-C hardness (H 60 ) in 60 seconds after the contact.

Description

technical field [0001] The present invention relates to a sensor such as a tactile sensor, a bending sensor, etc., which detects deformation caused by contact with a magnetic foam, which is a resin foam containing a magnetic filler; and a method of manufacturing the sensor. Background technique [0002] Sensors that detect deformation caused by the contact of one object with another include tactile sensors, bending sensors, etc., and are widely used in various fields. The tactile sensor detects the intensity, position, direction, etc. of the contact, and the bending sensor detects bending deformation. The sensors are applied to, for example, the robot's hand and skin, and when controlling the robot's movement and responding to external pressure, the information learned from the sensor (such as strength, position, direction, etc.) is used as information to determine the next action of the robot . There are various proposals regarding such a sensor and its manufacturing meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/24C08G18/00C08G18/10G01L1/12C08G101/00
CPCC08J9/0014B29C44/02C08G18/10C08G2101/00C08J9/0061C08J9/0066C08J9/0095C08J9/30C08J2201/022C08J2205/06C08J2207/00C08J2375/08G01D5/12G01L1/12G01L1/122
Inventor 重藤纯一福田武司安西弘行罗志伟
Owner TOYO TIRE & RUBBER CO LTD
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