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US 12,760,580 B2Granted
Door closing apparatus
AssigneeFuji Electric Co., Ltd.
InventorsTakahiro Shiroma, Atsushi Kitabata
Life of this patent
Estimating the term…
Abstract
A door closing apparatus includes a first rotary electric motor that is configured to rotate a first pinion to open and close a first door body; and a second rotary electric motor that is provided separately from the first rotary electric motor and configured to rotate a second pinion to open and close a second door body.
Claims12
A door closing apparatus comprising:
- first and second door bodies that are configured to slide in opening/closing directions in which one of the first and second door bodies moves away from or toward another of the first and second door bodies;
- a first rack that is mounted on the first door body and extends in the opening/closing directions;
- a second rack that is mounted on the second door body and extends in the opening/closing directions;
- a first pinion that rotatably meshes with the first rack;
- a second pinion that rotatably meshes with the second rack;
- a first rotary electric motor that is configured to rotate the first pinion to open and close the first door body;
- and
- a second rotary electric motor that is provided separately from the first rotary electric motor and configured to rotate the second pinion to open and close the second door body, wherein
- when the first and the second door bodies are in a closed state,
- a maximum amount that an end of the first rack protrudes in the opening direction of the second door body from an outer edge of the second door body in the opening direction of the second door body is equal to or less than half a width of the second door body in the opening/closing directions, and
- a maximum amount that an end of the second rack protrudes in the opening direction of the first door body from an outer edge of the first door body in the opening direction of the first door body is equal to or less than half a width of the first door body in the opening/closing directions, and
- wherein
- the first rack and the second rack face each other and extend in the opening/closing directions;
- the first rotary electric motor is arranged above the first door body in a position closer, in the opening/closing directions, to an outer edge of the first door body in the closing direction of the first door body than a center of the first door body when the first and second door bodies are in the closed state;
- and
- the second rotary electric motor is arranged above the second door body in a position closer, in the opening/closing directions, to an outer edge of the second door body in a closing direction of the second door body than a center of the second door body when the first and second door bodies are in the closed state;
- and
- the first pinion and the second pinion are interposed between the first rack and the second rack and offset from each other in upward/downward directions or forward/backward directions orthogonal to the opening/closing directions and the upward/downward directions.
15 more elements
A door closing apparatus comprising:
- first and second door bodies that are configured to slide in opening/closing directions in which one of the first and second door bodies moves away from or toward another of the first and second door bodies;
- a first rack that is mounted on the first door body and extends in the opening/closing directions;
- a second rack that is mounted on the second door body and extends in the opening/closing directions;
- a first pinion that rotatably meshes with the first rack;
- a second pinion that rotatably meshes with the second rack;
- a first rotary electric motor that is configured to rotate the first pinion to open and close the first door body;
- and
- a second rotary electric motor that is provided separately from the first rotary electric motor and configured to rotate the second pinion to open and close the second door body, wherein
- the first rack and the second rack face each other and extend in the opening/closing directions;
- the first rotary electric motor is arranged above the first door body in a position closer, in the opening/closing directions, to an outer edge of the first door body in the closing direction of the first door body than a center of the first door body when the first and second door bodies are in a closed state;
- and
- the second rotary electric motor is arranged above the second door body in a position closer, in the opening/closing directions, to an outer edge of the second door body in a closing direction of the second door body than a center of the second door body when the first and second door bodies are in the closed state;
- the first pinion mounted on a rotational shaft of the first rotary electric motor and the second pinion mounted on a rotational shaft of the second rotary electric motor are interposed between the first rack and the second rack and offset from each other in upward/downward directions or forward/backward directions orthogonal to the opening/closing directions and the upward/downward directions;
- the first rack is arranged to partially overlap the second rack along the opening/closing directions as viewed in the upward/downward directions which are orthogonal to the opening/closing directions,
- a whole of the first rotary electric motor is arranged, as viewed from the forward/backward directions, between a center of an aperture that is closed by the first and second door bodies and a first connection portion that connects the first rack and the first door body, and
- a whole of the second rotary electric motor is arranged, as viewed from the forward/backward directions, between the center of the aperture and a second connection portion that connects the second rack and the second door body.
13 more elements
Dependencies are inferred from the claim text.