Pinch detection switch and pinch detection method

A pinch detection switch comprising one tubular pressure-sensitive detection member having a first hollow portion and a plurality of electrode wires spaced apart from one another by the first hollow portion, the plurality of electrode wires being formed in a spiral shape extending along a longitudinal direction of the pressure-sensitive detection member, and a cover member covering the pressure-sensitive detection member,

• wherein, when the cover member is viewed in cross section, the cover member comprises a base portion, a second hollow portion, and a deformation portion provided on the base portion so as to cover the second hollow portion of the cover member,
• the pressure-sensitive detection member is arranged in the deformation portion,
• a receiving portion configured to receive the pressure-sensitive detection member is arranged on the base portion,
• the receiving portion has substantially planar receiving surfaces formed at a position facing the pressure-sensitive detection member, the receiving surface being configured to receive the pressure-sensitive detection member in at least two directions, and
• wherein, when the cover member is viewed in cross section, the receiving portion has a protruding shape protruding in a stepwise manner from the base portion toward the deformation portion, and
• in the protruding shape, an upper surface and an inclined surface facing the pressure-sensitive detection member act as the two receiving surfaces.

A pinch detection switch comprising one tubular pressure-sensitive detection member having a first hollow portion and a plurality of electrode wires spaced apart from one another by the first hollow portion, the plurality of electrode wires being formed in a spiral shape extending along a longitudinal direction of the pressure-sensitive detection member, a cover member having a deformation portion covering the pressure-sensitive detection member, and a receiving portion forming a second hollow portion between the receiving portion and the deformation portion,

• wherein the pressure-sensitive detection member is a separate member from the cover member,
• the receiving portion has at least two substantially planar receiving surfaces formed such that the pressure-sensitive detection member is pressed against the at least two substantially planar receiving surfaces when an object is pinched and the deformation portion and the first and second hollow portions are deformed, and
• wherein, when the cover member is viewed in cross section, the receiving portion has a protruding shape protruding in a stepwise manner from the base portion toward the deformation portion, and
• in the protruding shape, an upper surface and an inclined surface facing the pressure-sensitive detection member act as the two receiving surfaces.

A pinch detection switch comprising one tubular pressure-sensitive detection member having a first hollow portion and a plurality of electrode wires spaced apart from one another by the first hollow portion, the plurality of electrode wires being formed in a spiral shape extending along a longitudinal direction of the pressure-sensitive detection member, a cover member having a deformation portion covering the pressure-sensitive detection member, and a receiving portion forming a second hollow portion between the receiving portion and the deformation portion,

• wherein the pressure-sensitive detection member is a separate member from the cover member,
• the receiving portion has substantially planar receiving surfaces configured to receive the pressure-sensitive detection member in at least two directions when the pressure-sensitive detection member is pressed against the receiving surface when an object is pinched and the deformation portion and the first and second hollow portions are deformed, and
• wherein, when the cover member is viewed in cross section, the receiving portion has a protruding shape protruding in a stepwise manner from the base portion toward the deformation portion, and
• in the protruding shape, an upper surface and an inclined surface facing the pressure-sensitive detection member act as the two receiving surfaces.

A pinch detection switch comprising a pressure-sensitive detection member having a first hollow portion and a plurality of electrode wires spaced apart from one another by the first hollow portion and formed in a spiral shape extending along a longitudinal direction of the pressure-sensitive detection member, a cover member having an elastic deformation portion on which an object comes in contact, and a receiving portion forming a second hollow portion between the receiving portion and the deformation portion,

• wherein the receiving portion is formed such that, when the object is pinched and the deformation portion is deformed, two substantially planar receiving surfaces against which the pressure-sensitive detection member is pressed have a predetermined angle,
• pinching of the object is detected when the pressure-sensitive detection member is pressed against the receiving surface and is deformed so as to be crushed, and
• wherein, when the cover member is viewed in cross section, the receiving portion has a protruding shape protruding in a stepwise manner from the base portion toward the deformation portion, and
• in the protruding shape, an upper surface and an inclined surface facing the pressure-sensitive detection member act as the two receiving surfaces.