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JP-7854859-B2 - seating equipment

JP7854859B2JP 7854859 B2JP7854859 B2JP 7854859B2JP-7854859-B2

Inventors

  • 中根 正伸
  • 長尾 裕

Assignees

  • コイト電工株式会社

Dates

Publication Date
20260507
Application Date
20220531

Claims (10)

  1. In a seating device capable of changing the seating configuration, A reclining mechanism that supports the seat back in a tiltable manner and can restrain it at a predetermined tilting angle, A reclining control unit that can release the constraint on the tilt angle of the backrest by the aforementioned reclining mechanism, A power transmission system that transmits the operating force input to the reclining control unit to the reclining mechanism to release the constraint on the tilt angle of the backrest, The power transmission system includes a clutch mechanism provided in the middle of the power transmission system, which can be switched between a connected state in which the operating force can be transmitted and a disconnected state in which the force cannot be transmitted. When the seat is converted to a specific state, the clutch mechanism switches from the coupled state, which is the state when the seat is not in a specific state, to the disengaged state. An engaging portion provided on the fixed side of the seat, The seat comprises an engaged portion provided on the movable side of the seat, which is displaceable by engaging with the engaging portion when the seat is in the specific state described above, The seating device is characterized in that the engaged portion and the clutch mechanism are connected to each other via a transmission means, and when the displacement of the engaged portion is transmitted to the clutch mechanism via the transmission means, the clutch mechanism switches from the engaged state to the disengaged state .
  2. A rotating mechanism that rotates the seat around a pivot axis, It includes a sliding mechanism that moves the seat forward and backward together with the rotation mechanism from the fixed side, The seat's position is determined by the interlocking of the aforementioned rotation mechanism and the aforementioned sliding mechanism. In a long configuration, the seat back is roughly parallel to the wall, It can be converted to a cross state, which is approximately perpendicular to the long state and away from the wall. The seating device according to claim 1 , characterized in that the aforementioned specific state of the seat corresponds to the long state.
  3. As the fixed side of the seat, there is a leg base fixed to the floor, The movable side of the seat includes a movable platform which is attached to the leg rest so as to be able to move forward and backward via the sliding mechanism, and the seat frame is rotatably supported via the rotating mechanism, The engagement portion is provided on the leg base, The seating device according to claim 2 , characterized in that the engaged portion and the clutch mechanism are provided on the underframe.
  4. The power transmission system includes a reclining operation cable that connects the reclining operation unit and the reclining mechanism in a way that enables power transmission. The aforementioned reclining control cable is A first reclining operation cable connecting the reclining operation unit and the clutch mechanism, It consists of a clutch mechanism and a second reclining operation cable connecting the reclining mechanism, When the clutch mechanism is engaged, the first reclining operation cable and the second reclining operation cable are connected in a way that allows power transmission, The seating device according to claim 3 , characterized in that when the clutch mechanism is in a disengaged state, the first reclining operation cable and the second reclining operation cable are separated in a way that prevents power transmission.
  5. The aforementioned clutch mechanism is A mounting bracket fixed to the frame, A base member provided on the mounting bracket and movable in a direction parallel to the axial direction through which the reclining operation cable is routed, A switching member is provided on the base member, is movable integrally with the base member in the direction in which the base member moves, and is also movable in a direction perpendicular to the direction in which the base member moves, is connected to the engaged portion via the transmission means, and when the displacement of the engaged portion is transmitted via the transmission means, moves from one of the perpendicular directions to the other, The switching member is provided above and below the switching member, each movable in the same direction as the base member, and comprises an upper interlocking member to which the tip of the first reclining operation cable is connected at the upper side of the switching member, and a lower interlocking member to which the base end of the second reclining operation cable is connected at the lower side of the switching member, The aforementioned upper interlocking member is provided with a guide groove extending in a direction parallel to its direction of movement, and a connecting hole communicating perpendicularly to the guide groove. The upper interlocking member is connected to the lower interlocking member by a pin provided on the lower interlocking member, which is fitted relatively movably into the guide groove or the connecting hole. The switching member is provided with an avoidance groove through which the pin can move relative to the guide groove or the connecting hole at a position that overlaps with it. When the switching member moves in the other direction, the pin moves in the guide groove of the upper interlocking member, and the operating force transmitted to the upper interlocking member is not transmitted to the lower interlocking member. The seating device according to claim 4, characterized in that when the switching member moves in one direction, the pin fits into the connecting hole of the upper interlocking member, and the operating force transmitted to the upper interlocking member is transmitted to the lower interlocking member.
  6. The seat is rotatable around a pivot axis, and the seat is provided with a rotation lock mechanism that can restrain it at multiple predetermined rotation angles. It includes a rotation operating unit that can release the constraint on the rotation angle of the seat by the rotation lock mechanism, The aforementioned rotational operating section and the rotational locking mechanism are also connected so as to be able to transmit operating force via a power transmission system in which the clutch mechanism is provided in between. When the clutch mechanism is in the engaged state, the operating force input to the rotational operating section is transmitted to the rotational locking mechanism, which releases the constraint on the rotation angle of the seat. The seating device according to claim 5, characterized in that when the clutch mechanism is in the disengaged state, the operating force input to the rotational operating section is not transmitted to the rotational locking mechanism, and the constraint on the rotational angle of the seat cannot be released.
  7. The power transmission system includes a rotation operation cable that connects the rotation operation unit and the rotation lock mechanism in a manner that enables power transmission. The aforementioned rotation control cable is A first rotation operation cable connecting the rotation operation unit and the clutch mechanism, It consists of a clutch mechanism and a second rotational operation cable connecting the rotational lock mechanism, When the clutch mechanism is engaged, the first rotational operating cable and the second rotational operating cable are connected in a way that allows power transmission, The seating device according to claim 6 , characterized in that when the clutch mechanism is in a disengaged state, the first rotational operation cable and the second rotational operation cable are separated in a way that prevents power transmission.
  8. The aforementioned clutch mechanism is A rotation interlocking member is provided above the switching member, is movable in the same direction as the base member, and has the tip of the first rotation operation cable connected to it. The aforementioned rotating interlocking member is provided with a guide groove extending in a direction parallel to its direction of movement, and a connecting hole communicating perpendicularly to the guide groove. The aforementioned rotating interlocking member is connected to the switching member by a pin provided on the switching member, which is fitted relatively movably into the guide groove or the connecting hole. The base member is connected to the base end of the second rotation operation cable. When the switching member moves in the other direction, the pin moves along the guide groove of the rotating interlocking member, and the operating force transmitted to the rotating interlocking member is not transmitted to the switching member and the base member. The seating device according to claim 7, characterized in that when the switching member moves in one direction, the pin fits into the connecting hole of the rotating interlocking member, and the operating force transmitted to the rotating interlocking member is transmitted to the switching member and the base member.
  9. A special rotation locking mechanism that restrains rotation for converting the seat to the aforementioned specific state, It includes a special rotation operation unit that can release the restriction on the rotation of the seat by the special rotation lock mechanism, The special rotating operating section and the clutch mechanism are also connected via the power transmission system so as to be able to transmit operating force. The seating device according to claim 8, characterized in that the operating force input to the special rotation operation unit is transmitted to the special rotation lock mechanism, thereby releasing the constraint on the rotation of the seat, and is also transmitted to the rotation lock mechanism via the power transmission system and the clutch mechanism, thereby simultaneously releasing the constraint on the rotation angle of the seat by the rotation lock mechanism.
  10. The seating device according to claim 9, characterized in that the operating force input to the special rotating operating unit is transmitted to the reclining mechanism via the power transmission system and the clutch mechanism, and at the same time the constraint on the tilt angle of the backrest can be released.

Description

This invention relates to a seating device capable of changing the state of a seat. Traditionally, seats installed in railway cars, for example, have included long, two-seater and multi-seater types, typically installed along the walls on both sides of the passenger compartment. Among these seat types, there are known rotating seats that can change direction by rotating around a central axis, allowing the seat back to be positioned either parallel to the wall (long configuration) or perpendicular to the wall (cross configuration). Regarding the aforementioned rotating seat, a seating device has been proposed that, in addition to a seat rotation mechanism, also includes a sliding mechanism and a transmission mechanism to link each mechanism, so that the seat's trajectory (radius of rotation) does not interfere with the wall when rotating the seat from a long position along the wall to a cross position (see, for example, Patent Document 1). In other words, in the aforementioned seating system, in order to ensure a comfortable space by widening the aisle width between seats in the passenger compartment as much as possible, the seat's rotation axis was positioned near the wall when in the long position, while in the cross position, the seat's rotation axis was slid towards the aisle to prevent the seat from interfering with the wall. Therefore, in the aforementioned seating system, it was not possible to tilt the backrest to prevent interference with the wall when in the long position, and thus it was not possible to provide a reclining mechanism to improve seating comfort. To solve the problems of the aforementioned seating device, the applicant has already proposed a seating device that prevents the reclining mechanism from tilting the backrest when the seat is in the extended position (see, for example, Patent Document 2). In this seating device, the operating lever for the reclining mechanism is located on the armrest at the upper end of the armrest on the side of the seat, and a locking mechanism is provided within the armrest to restrain the operating lever from being operated when the seat is in the extended position. Patent No. 3431772Patent No. 7051253 A perspective view showing the seating device in the long position according to an embodiment of the present invention.A perspective view showing one crossed state of the seating device according to an embodiment of the present invention.A perspective view showing an intermediate state between the long and cross configurations of the seating device according to an embodiment of the present invention.This is a perspective view from below of the seat frame and movable platform of a seating device according to an embodiment of the present invention.This is a plan view showing the position of the locking holes of the rotation locking mechanism in the frame of the seating device according to an embodiment of the present invention.A front view showing the rotation locking mechanism of a seat device according to an embodiment of the present invention.A perspective view showing the leg rest of a seating device according to an embodiment of the present invention.This is a plan view showing the relative position of the clutch mechanism with respect to the leg rest when the seating device according to an embodiment of the present invention is in an intermediate position between the long position and the cross position.This is a plan view showing the relative position of the clutch mechanism with respect to the leg rest when the seat device according to an embodiment of the present invention is in the long position.This is a perspective view from below of the clutch mechanism and transmission means arranged on the mounting plate of the frame of a seating device according to an embodiment of the present invention.This is a perspective view from below of the clutch mechanism and transmission means of a seat device according to an embodiment of the present invention.This is a perspective view showing the clutch mechanism of a seat device according to an embodiment of the present invention.This is an enlarged perspective view showing the main part of the clutch mechanism of a seat device according to an embodiment of the present invention.This is an enlarged perspective view showing the clutch mechanism of a seat device according to an embodiment of the present invention.This is a perspective view showing the mounting state of the mounting bracket for the clutch mechanism of the seat device according to an embodiment of the present invention.This is a perspective view showing the mounting state of the base member of the clutch mechanism of the seat device according to an embodiment of the present invention.This is a perspective view showing the mounting state of the switching member of the clutch mechanism of a seat device according to an embodiment of the present invention.This is a perspective view showing the mounting state of the interlocking member of the clutch me