Pressure-sensitive sensor, object detecting device, and opening-closing device

An object detecting device for detecting a contact of an object, and preventing a seizure of the object between an opening and an opening-closing unit for opening and closing said opening, said object detecting device comprising:

• a pressure-sensitive sensor disposed at at least one of said opening and said opening-closing unit, said pressure-sensitive sensor comprising:
• pressure-sensitive means for generating an output signal depending on deformation;
• and
• support means for supporting said pressure-sensitive means in at least one of said opening and said opening-closing unit, said support means having a greater flexibility than said pressure-sensitive means;
• and
• judging means for judging the contact of the object with said pressure-sensitive sensor on the basis of an output signal of said pressure-sensitive sensor.

An object detecting device for detecting a contact of an object, and preventing a seizure of the object between an opening and an opening-closing unit for opening and closing said opening, said object detecting device comprising:

• a pressure-sensitive sensor disposed at at least one of said opening and said opening-closing unit, said pressure-sensitive sensor comprising:
• pressure-sensitive means for generating an output signal depending on deformation, said press sensitive means being composed of a flexible piezoelectric sensor;
• and
• support means for supporting said pressure-sensitive means along a shape of an edge of said opening or said opening-closing unit, said support means having a greater flexibility than said pressure sensitive means;
• judging means for judging the contact of the object with said pressure-sensitive sensor on the basis of an output signal of said pressure-sensitive sensor;
• and
• a discharge unit for discharging an electric charge generated in said piezoelectric sensor disposed in at least one of said piezoelectric sensor and said judging means.

An opening-closing device having a function for detecting a contact of an object, and preventing a seizure of the object between an opening and an opening-losing unit for opening and closing said opening, said opening-closing device comprising:

• an object detecting device comprising:
• a pressure-sensitive sensor disposed at at least one of said opening and said opening-closing unit, said pressure-sensitive sensor comprising:
• pressure-sensitive means for generating an output signal depending on deformation;
• and
• support means for supporting said pressure-sensitive means in at least one of said opening and said opening-closing unit, said support means having a greater flexibility than said pressure-sensitive means;
• and
• judging means for judging the contact of the object with said pressure-sensitive sensor on the basis of an output signal of said pressure-sensitive sensor;
• drive means for driving said opening-closing unit;
• and
• control means for controlling said drive means so as to stop closing action of said opening-closing unit or open said opening-closing unit when said judging means judges the contact of the object with said pressure-sensitive sensor when said opening-closing unit is closing.

An opening-closing device having a function for detecting a contact of an object, and preventing a seizure of the object between an opening and an opening-closing unit for opening and closing said opening, said opening-closing device comprising:

• an object detecting device comprising:
• a pressure-sensitive sensor disposed at at least one of said opening and said opening-closing unit, said pressure-sensitive sensor comprising:
• pressure-sensitive means for generating an output signal depending on deformation, said pressure-sensitive means a being composed of a flexible piezoelectric sensor;
• and
• support means for supporting said pressure-sensitive means along a shape of an edge of said opening or said opening-closing unit, said support means having a greater flexibility than said pressure-sensitive means;
• judging means for judging the contact of the object with said pressure-sensitive sensor on the basis of an output signal of said pressure-sensitive sensor;
• and
• a discharge unit for discharging an electric charge generated in said piezoelectric sensor disposed in at least one of said piezoelectric sensor and said judging means;
• drive means for driving said opening-closing unit;
• and
• control means for controlling said drive means so as to stop closing action of said opening-closing unit or open said opening-closing unit when said judging means judges the contact of the object with said pressure-sensitive sensor when said opening-closing unit is closing.