Pinch detection sensor

Patent metadata

Field	Value
Publication number	US-11549301-B2
Application number	US-201916448770-A
Country	US
Kind code	B2
Filing date	Jun 21, 2019
Priority date	Jun 25, 2018
Publication date	Jan 10, 2023
Grant date	Jan 10, 2023

Abstract

A pinch detection sensor, for detecting the occurrence of pinch during closing of a sliding door, includes a door front edge rubber including a hollow portion inside, to be attached to a front edge portion of the sliding door in a closing movement direction of the sliding door, and a plurality of linear shape pressure sensing members accommodated in the hollow portion, each linear shape pressure sensing member comprising a tubular elastic body and respective conductor wires spaced apart from each other in an inner side of the tubular elastic body. The door front edge rubber includes, in the hollow portion, a plurality of housing spaces, which accommodate the plurality of linear shape pressure sensing members, respectively. Movements of the linear shape pressure sensing members between the plurality of housing spaces are restricted by a partitioning portion.

First claim

What is claimed is:

1. A pinch detection sensor, for detecting an occurrence of a pinch during closing of a sliding door, comprising:
a door front edge rubber member including a hollow portion inside, to be attached to a front edge portion of the sliding door in a closing movement direction of the sliding door; and
a plurality of linear shape pressure sensing members accommodated in the hollow portion, each linear shape pressure sensing member comprising a tubular elastic body and respective conductor wires spaced apart from each other in an inner side of the tubular elastic body;
wherein the door front edge rubber member includes, in the hollow portion, a plurality of housing spaces, which accommodate the plurality of linear shape pressure sensing members, respectively,
wherein each linear shape pressure sensing member accommodated in its respective housing space is allowed to be moved in a width direction of the sliding door within the housing space, and
wherein movements of the linear shape pressure sensing members between the plurality of housing spaces are restricted by a partitioning portion, wherein the plurality of linear shape pressure sensing members are aligned in an alignment direction which intersects the closing moving direction of the sliding door and a longitudinal direction of the door front edge rubber member, and are not overlapped in the closing moving direction of the sliding door.

2. The pinch detection sensor according to claim 1 , further including three of the linear shape pressure sensing members,
wherein one of the three linear shape pressure sensing members is disposed in a middle portion of the hollow portion, in the alignment direction,
wherein one of an other two of the three linear shape pressure sensing members is disposed on one side of the one linear shape pressure sensing member disposed in the middle Portion of the hollow Portion in the alignment direction, and
wherein an other one of the other two of the three linear shape pressure sensing members is disposed on an other side of the one linear shape pressure sensing member disposed in the middle portion of the hollow portion in the alignment direction.

3. The pinch detection sensor according to claim 1 , wherein the door front edge rubber member integrally includes a cover section that covers the plurality of linear shape pressure sensing members in the closing movement direction relative to the hollow portion, and a base section that forms the hollow portion between the base section and the cover section,
wherein the cover section is curved in an arch shape protruding in the closing movement direction in a middle portion of the cover section, in the alignment direction, and
wherein the base section includes a protrusion that protrudes in the closing movement direction in a middle portion of the base section, in the alignment direction.

4. The pinch detection sensor according to claim 2 , wherein the door front edge rubber member integrally includes a cover section that covers the plurality of linear shape pressure sensing members in the closing movement direction relative to the hollow portion, and a base section that forms the hollow portion between the base section and the cover section,
wherein the cover section is curved in an arch shape protruding in the closing movement direction in a middle portion of the cover section, in the alignment direction, and
wherein the base section includes a protrusion that protrudes in the closing movement direction in a middle portion of the base section, in the alignment direction.

5. The pinch detection sensor according to claim 2 , wherein the door front edge rubber member integrally includes a cover section that covers the plurality of linear shape pressure sensing members in the closing movement direction relative to the hollow portion, and a base section that forms the hollow portion between the base section and the cover section, and
wherein the cover section is curved in an arch shape protruding in the closing movement direction in a middle portion of the cover section in the alignment direction, and includes an inward protrusion that protrudes toward the base section and to the one linear shape pressure sensing member disposed in the middle portion of the hollow portion, in the alignment direction.

6. The pinch detection sensor according to claim 2 , wherein the door front edge rubber member integrally includes a cover section that covers the plurality of linear shape pressure sensing members in the closing movement direction relative to the hollow portion, and a base section that forms the hollow portion between the base section and the cover section, and
wherein the cover section is curved in an arch shape protruding in the closing movement direction in a middle portion of the cover section, in the alignment direction, and includes an outward protrusion that protrudes on an opposite side of the cover section to the hollow portion.

7. The pinch detection sensor according to claim 1 , wherein the plurality of housing spaces are partitioned with no gap therebetween by the partitioning portion.

8. The pinch detection sensor according to claim 1 , wherein each linear shape pressure sensing member of the plurality of linear shape pressure sensing members are accommodated in each housing space of the plurality of housing spaces, respectively, and each linear shape pressure sensing member is movable within the respective housing space.

9. The pinch detection sensor according to claim 1 , wherein each linear shape pressure sensing member of the plurality of linear shape pressure sensing members are accommodated in each housing space of the plurality of housing spaces, respectively, and each linear shape pressure sensing member is movable in a width direction of the sliding door within each housing space of the plurality of housing spaces.

10. The pinch detection sensor according to claim 1 , wherein a direction which intersects a moving direction of the sliding door and a longitudinal direction of the door front edge rubber member comprises the alignment direction.

11. The pinch detection sensor according to claim 3 , wherein the cover section includes an outward protrusion that protrudes on an interior side of the cover section to the hollow portion.

12. The pinch detection sensor according to claim 4 , wherein the cover section includes an outward protrusion that protrudes on an interior side of the cover section to the hollow portion.

13. The pinch detection sensor according to claim 5 , wherein the cover section includes an outward protrusion that protrudes on an interior side of the cover section to the hollow portion.

14. A pinch detection sensor, for detecting an occurrence of a pinch during closing of a sliding door, comprising:
a door front edge rubber member including a hollow portion inside, to be attached to a front edge portion of the sliding door in a closing movement direction of the sliding door; and
a plurality of linear shape pressure sensing members accommodated in the hollow portion, each linear shape pressure sensing member comprising a tubular elastic body and respective conductor wires spaced apart from each other in an inner side of the tubular elastic body;
wherein the door front edge rubber member includes, in the hollow portion, a plurality of housing spaces, which accommodate the plurality of linear shape pressure sensing members, respectively,
wherein a length of each housing space of the plurality of housing spaces, in the width direction of the sliding door, in the closing movement direction of the sliding door, is greater than the diameter of each linear shape pressure

Assignees

• Hitachi Metals Ltd

Inventors

• Kawase Kenji
• Suzuki Shuichi

Classifications

• B61D19/026 Primary

  Safety devices for preventing passengers from being injured by movements of doors or variations in air pressure (safety devices in passenger lifts for preventing trapping of passengers between closing doors B66B13/26; acting on power-operated mechanisms for wings E05F15/00) · CPC title

• B60J5/06

  slidable; foldable · CPC title

• E05F15/44 Primary

  responsive to changes in electrical conductivity · CPC title

• H01H3/142

  of the elongated strip type · CPC title

• E05Y2900/531

  Doors · CPC title