WO2020202732A1 - Siège de véhicule - Google Patents

Siège de véhicule Download PDF

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Publication number
WO2020202732A1
WO2020202732A1 PCT/JP2020/002545 JP2020002545W WO2020202732A1 WO 2020202732 A1 WO2020202732 A1 WO 2020202732A1 JP 2020002545 W JP2020002545 W JP 2020002545W WO 2020202732 A1 WO2020202732 A1 WO 2020202732A1
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WO
WIPO (PCT)
Prior art keywords
seat
torque
rotation
support plate
rotary damper
Prior art date
Application number
PCT/JP2020/002545
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English (en)
Japanese (ja)
Inventor
義和 貴嶋
聡 小木曽
安田　豊
Original Assignee
株式会社タチエス
三菱自動車工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社タチエス, 三菱自動車工業株式会社 filed Critical 株式会社タチエス
Publication of WO2020202732A1 publication Critical patent/WO2020202732A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/30—Non-dismountable or dismountable seats storable in a non-use position, e.g. foldable spare seats

Definitions

  • the present invention relates to a vehicle seat, and more particularly to a vehicle seat capable of safely rotating the seat while reducing the operating force when rotating the seat.
  • the seat with the seat back and seat cushion folded is integrally rotatably supported, and the folded seat is rotated between the usage position on the front side of the rotation axis and the storage position on the rear side.
  • Vehicle seats that can be used are known.
  • Patent Document 1 when rotating toward the storage position, the torque of the damper is transmitted to the seat by engaging the one-way clutch, and when rotating toward the use position, the damper is not engaged with the one-way clutch.
  • a vehicle seat in which the torque of the above is not transmitted to the seat is described.
  • the rotation speed can be reduced by the torque of the damper.
  • the torque of the damper can be suppressed from acting as a reaction force, so that when the seat is rotated toward the use position. The operating force can be reduced.
  • Japanese Unexamined Patent Publication No. 2000-142196 (for example, paragraphs 0021 to 0023, FIGS. 1 to 5)
  • the above-mentioned conventional technique has a problem that the torque of the damper acts as a reaction force even when the seat is lifted from the used position, so that the operating force when rotating the seat toward the storage position increases. It was.
  • the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a vehicle seat capable of safely rotating a seat while reducing an operating force when rotating the seat. It is said.
  • the vehicle seat of the present invention includes a seat cushion, a seat back rotatably supported by the seat cushion, and the seat cushion and the seat back can be rotated around an axis along the left-right direction.
  • a rotary shaft that supports the shaft and a rotary damper that applies torque around the rotary shaft to the seat cushion and the seat back are provided, and the rotary shaft is in a state where the seat back is folded on the seat cushion side. It is configured to be rotatable around the rotation axis between the use position on the front side and the storage position on the rear side of the rotation axis, and from the use position, the seat cushion and the seat back.
  • the torque for decelerating the rotation toward the storage position is from the rotary damper to the seat cushion and the seat back from the start end of the rotation region to the vertical position where the center of gravity is located on the upper side in the vertical direction of the rotation shaft to at least halfway.
  • the torque for decelerating the rotation toward the storage position is transmitted from the rotary damper to the seat cushion and the seat back at least in the middle to the end of the rotation region from the vertical position to the storage position.
  • the torque for decelerating the rotation toward the use position is not transmitted from the rotary damper to the seat cushion and the seat back.
  • the following effects are obtained. From the position of use to the vertical position where the center of gravity of the seat cushion and seat back is located on the upper side of the rotation axis in the vertical direction, the torque that decelerates the rotation toward the storage position is from the rotary damper to the seat from the beginning to at least halfway. It is not transmitted to the cushion and seat back. As a result, it is possible to prevent the torque of the rotary damper from acting as a reaction force when the seat (seat cushion and seat back) is rotated (lifted) from the used position to the stored position.
  • the torque for decelerating the rotation toward the storage position is transmitted from the rotary damper to the seat, so that the seat can be safely moved toward the storage position. Can be rotated.
  • the torque for decelerating the rotation toward the use position is not transmitted from the rotary damper to the seat, so that the seat is rotated from the storage position to the use position ( When lifting), it is possible to suppress the torque of the rotary damper from acting as a reaction force.
  • the vehicle seat according to claim 2 in addition to the effect of the vehicle seat according to claim 1, the following effects are exhibited. Since the seat cushion and the seat back are provided with an elastic member that applies an elastic force in the rotation direction toward the storage position in the rotation region from the use position to at least the vertical position, the operation of lifting the seat from the use position to the vertical position is performed by the elastic body. It can be assisted by the elastic force of. Therefore, there is an effect that the operating force when rotating the seat toward the storage position can be reduced.
  • the following effects are exhibited. From the middle of the rotation region from the use position to the vertical position to the end side, the torque in the rotation direction toward the use position due to the weight of the seat cushion and seat back is rather than the torque in the rotation direction toward the storage position due to the elastic force of the elastic member. Since the torque becomes large, the seat naturally tries to rotate toward the storage position due to the torque generated by the elastic force of the elastic member.
  • the torque of the rotary damper is not transmitted to the seat, so the seat can be rotated to the vertical position using the torque generated by the elastic force of the torsion spring.
  • the seat exceeds the vertical position due to the rotation, at least the torque due to the weight of the seat acts to rotate the seat toward the storage position, but the rotation speed can be reduced by the torque of the rotary damper. .. That is, if the seat is lifted from the used position to a predetermined height (until the torque due to the elastic force of the elastic member exceeds the torque due to the weight of the seat itself), the seat is directed to the storage position without operating the seat thereafter. It has the effect of being able to rotate safely.
  • a rotary damper provided with a pair of support members through which both ends in the left-right direction of the rotation shaft are inserted, and is arranged on the inner surface of the support member on the opposite side of the pair of support members or on the outer surface opposite to the inner surface.
  • the axis of rotation is inserted.
  • a pair of support members through which both ends in the left-right direction of the rotating shaft are inserted are provided, and the support members include a first support plate arranged on the opposite side of the pair of support members and the opposite side of the pair of support members. Is provided with a second support plate arranged to face the first support plate on the opposite side, so that the rotation shaft can be stably supported by the first support plate and the second support plate that are separated from each other by a predetermined distance on the left and right sides.
  • the first support plate and the second support plate are arranged so as to face each other on the left and right sides, the arrangement space of the first support plate and the second support plate in the left-right direction is increased, but the first support plate and the second support plate are arranged.
  • the rotating shaft is inserted through a rotary damper arranged between the support plates facing each other.
  • the rotary damper can be arranged by utilizing the dead space between the facing surfaces, so that there is an effect that the arrangement space of the support member and the rotary damper can be suppressed from increasing in the left-right direction.
  • the vehicle seat according to claim 6 in addition to the effect of the vehicle seat according to claim 5, the following effects are exhibited. It is provided with an elastic member that is engaged with the rotation shaft and the first support plate and applies an elastic force in the rotation direction around the rotation shaft to the seat cushion and the seat back, and the first support plate is on the opposite side of the pair of support members. It is provided with a recess that is recessed on the inner surface and on which an elastic member is arranged. As a result, the elastic member is provided on the inner surface side of the first support plate while stably supporting the rotating shaft by securing the facing distance between the first support plate and the second support plate in the region where the recess is not formed. It can be arranged.
  • the elastic member When assembling the elastic member to the rotating shaft or the first support plate, it is necessary to engage the elastic member with the rotating shaft or the first support plate, but the inner surface of the first support plate (the first support plate and the second support). By disposing the elastic member (outside between the plates facing each other), the work of assembling the elastic member can be facilitated. Further, since the elastic member is arranged in the recess formed on the inner surface of the first support plate, even when the elastic member is arranged on the inner surface of the first support plate, the arrangement space of the elastic member is left and right. It is possible to suppress the increase in the direction.
  • the rotary damper which is relatively easy to assemble to the rotating shaft as compared with the elastic member, is arranged between the first support plate and the second support plate, and the elastic member is relatively complicated to assemble.
  • the space for arranging the rotary damper and the elastic member increases in the left-right direction while suppressing the complicated assembling work of the rotary damper and the elastic member. It has the effect of being able to suppress it.
  • FIG. 1 It is a front perspective view of the vehicle seat in one Embodiment of this invention.
  • (A) is a front perspective view of the vehicle seat in which the seat is folded at the used position, and (b) is a vehicle showing a state in which the seat is rotated from the state of FIG. 2 (a) to the storage position. It is a front perspective view of the sheet.
  • (A) is a side view of a vehicle seat showing a state in which the seat is folded at the use position, and (b) is a state in which the seat is rotated by a predetermined amount from the state of FIG. 3 (a) toward a vertical position. It is a side view of the vehicle seat which shows.
  • (A) is a side view of a vehicle seat showing a state in which the seat is rotated from the state of FIG. 3 (b) until it exceeds the vertical position
  • (b) is a side view of the seat from the state of FIG. 4 (a). It is a side view of the vehicle seat which shows the state rotated to the storage position.
  • (A) is a side view of a vehicle seat showing a state in which the seat is rotated by a predetermined amount toward a vertical position from the state (storage position) of FIG. 4 (b)
  • FIG. 5 (a) is a side view of the vehicle seat.
  • FIG. 1 is a front perspective view of the vehicle seat 1 according to the embodiment of the present invention.
  • FIG. 2A is a front perspective view of the vehicle seat 1 showing a state in which the seat is folded at the used position
  • FIG. 2B is a rotation of the seat from the state of FIG. 2A to the storage position.
  • It is a front perspective view of the vehicle seat 1 which shows the state.
  • the arrow U direction, arrow D direction, arrow F direction, arrow B direction, arrow L direction, and arrow R direction of FIGS. 1 and 2 are the upward, downward, forward, and rear directions of the vehicle seat 1, respectively. , Left direction and right direction are shown, and the same applies to FIGS. 3 and later. Further, the vertical direction (arrow UD direction) of the vehicle seat 1 corresponds to the vertical direction.
  • the vehicle seat 1 is a seat mounted on a vehicle (for example, an automobile).
  • the vehicle seat 1 is for rotatably supporting the seat cushion 2 constituting the seat surface, the seat back 3 which is pivotally supported by the seat cushion 2 and constitutes the backrest, and the seat cushion 2 and the seat back 3.
  • a rotation shaft 4 of the above, and a support mechanism 10 for applying torque to the rotation of the seat cushion 2 and the seat back 3 around the rotation shaft 4 are provided.
  • the seat cushion 2 is configured by having a cushion frame (not shown) support a cushion pad (not shown) made of a foam such as a flexible polyurethane foam, and covering the cushion pad with a skin material.
  • the back frame (not shown) supports a back pad (not shown) made of foam such as flexible polyurethane foam, and the back pad is covered with a skin material (not shown). It is composed of.
  • the seat back 3 includes a headrest 3a constituting a pillow for a seat and a band-shaped operating member 3b for releasing the fixed state of the seat back 3 (reclining) with respect to the seat cushion 2.
  • the headrests 3a are provided in pairs in the left-right direction (arrow LR direction) at predetermined intervals, and the operating member 3b is provided at the upper end portion of the seat back 3 between the pair of headrests 3a facing each other.
  • the seat back 3 is pivotally supported on the rear end side of the seat cushion 2 (the end on the arrow B side in FIG. 1) via a bracket, and on the upper end side of the seat back 3 (the end on the arrow U side in FIG. 1).
  • the headrest 3a is rotatably supported. That is, the headrest 3a is configured to be foldable toward the front surface of the seat back 3 (the surface on the arrow F side), and the seat back 3 is directed toward the upper surface of the seat cushion 2 (the surface on the arrow U side in FIG. 1). It is configured to be foldable.
  • the operating member 3b is pulled with the headrest 3a folded toward the seat back 3, and the seat back 3 (reclining) is released from the fixed state with respect to the seat cushion 2, so that the seat back 3 is folded toward the seat cushion 2. Can be done (see FIG. 2 (a)).
  • a rotating shaft 4 projects outward from the side surface of the seat cushion 2 in the left-right direction, and the rotating shaft 4 is rotatably supported by the support mechanism 10, so that the seat cushion 2 and the seat back 3 and the rotating shaft 4 are integrally rotatably configured with respect to the support mechanism 10. Therefore, the folded sheet can be arranged at the storage position by rotating the sheet toward the rear side of the rotation shaft 4 in the state where the sheet is folded at the used position (the state shown in FIG. 2A). (See FIG. 2 (b)).
  • the "use position” is a position where the seat cushion 2 is arranged at an angle at which the occupant can sit (in the present embodiment, the horizontal line connecting the center of gravity G (see FIG. 3) of the seat and the rotation axis 4). The position where the angle with respect to the direction is 16 °).
  • the “storage position” means that the seat is rotated from the “use position” around the rotation shaft 4 at a predetermined angle (172 ° in the present embodiment), and the storage portion on the rear side of the rotation shaft 4 (not shown). ) Is the position where the seat is stored.
  • an operation unit 2a is provided on the upper surface on the rear end side of the seat cushion 2.
  • the operation unit 2a is configured as a handle for lifting the seat from the stored state, and by holding the operation unit 2a and rotating the seat toward the front side of the rotation shaft 4, the seat can be used at a position (FIG. 2 (FIG. 2). It can be placed at the position (a)).
  • the occupant may perform such an operation of switching between the stored state and the used state (rotation of the seat between the stored position and the used position) on the front side of the seat (arrow F side in FIG. 2). ..
  • the operation unit 2a for lifting the seat from the storage position and the operation member 3b for releasing the folded state of the seat are respectively arranged in the substantially central portion (between the pair of headrests 3a) in the left-right direction of the seat. Therefore, the seat can be easily switched from the stored state to the used state.
  • the arrangement position of the operation unit 2a in the left-right direction and the arrangement position of the operation member 3b in the left-right direction are substantially the same, when the folded sheet is arranged at the use position (FIG. 2A). ),
  • the operation unit 2a and the operation member 3b are arranged at overlapping positions in the top view (viewed in the direction of arrow D in FIG. 2A). Therefore, after holding the operation unit 2a and rotating the seat from the storage position to the use position, the operation member 3b located above the operation unit 2a can be towed.
  • the seat is rotated toward the use position side by holding the operation unit 2a (from the state of FIG. 2B).
  • the operation (to bring the seat to the state of 2 (a)) and the operation of pulling the operating member 3b to release the folded state of the seat can be smoothly performed (after rotating the seat to the use position side, the hands are left and right. It is not necessary to extend and operate the operating member 3b).
  • the sheet can be rotated between the use position and the storage position, but the torque (anti-rotation) for safely rotating the sheet. Force) is applied by the support mechanism 10.
  • the support mechanism 10 is assembled to each of the rotating shafts 4 protruding from the seat cushion 2 to the left and right, and the pair of support mechanisms 10 are arranged symmetrically.
  • the support mechanism 10 includes a torsion spring 20 (see FIG. 1), a support member 30 arranged on the lateral side of the torsion spring 20 in the left-right direction, and a rotary damper 40 arranged inside the support member 30. , Equipped with.
  • One end of the torsion spring 20 is hooked on the rotating shaft 4 (the rotating shaft 4 is inserted through the inner peripheral side of the torsion spring 20), and the other end is hooked on the protrusion 31b of the support member 30.
  • the support member 30 is a bracket for rotatably fixing the seat to the vehicle.
  • the support member 30 includes a pair of first support plates 31 and second support plates 32 that are arranged facing each other at predetermined intervals in the left-right direction.
  • the first support plate 31 and the second support plate 32 are each composed of a metal plate-like body, and the first support plate 31 constitutes a portion on the inner side in the left-right direction of the support member 30, and the second support plate 32 Consists of a portion of the support member 30 on the lateral side in the left-right direction.
  • the lower end portions of the first support plate 31 and the second support plate 32 are bent toward the opposite sides of each other, and the bent portions are integrally (for example, by welding) connected to each other.
  • Through holes are formed in each of the first support plate 31 and the second support plate 32 at heights facing each other on the left and right sides.
  • the first support plate 31 includes a recess 31a formed on the inner surface (the surface on the seat side) on the inner side in the left-right direction, and a protrusion 31b protruding inward in the left-right direction from the recess 31a. ..
  • the recess 31a is recessed from the inner surface of the first support plate 31 toward the outer side in the left-right direction, and the protrusion 31b projects from the recessed bottom surface (inner surface) of the recess 31a.
  • the recess 31a is formed as a recess (which can accommodate the torsion spring 20) corresponding to the outer shape of the torsion spring 20, and the torsion spring 20 is accommodated in the space formed by the recess 31a.
  • the torsion spring 20 is engaged with the rotating shaft 4 and the protrusion 31b while being housed in the recess 31a.
  • the rotary damper 40 is a unidirectional oil damper that applies torque around the rotating shaft 4 to the seat.
  • a through hole is formed in the center of the rotary damper 40, and the rotary shaft 4 is inserted into the through hole so as to engage with the through hole.
  • the rotary damper 40 is fixed to the support member 30 (at least one of the first support plate 31 and the second support plate 32).
  • the rotary shaft 4 is inserted through the rotary damper 40 arranged between the first support plate 31 and the second support plate 32, the first support plate 31 and the second support plate 32 in the left-right direction and the rotary damper 40 are inserted.
  • the rotary damper 40 can be arranged by utilizing the dead space between the two support plates 32 while ensuring a relatively wide facing interval. Therefore, while the rotating shaft 4 is stably supported by the first support plate 31 and the second support plate 32, the arrangement space of the first support plate 31, the second support plate 32, and the rotary damper 40 is arranged in the left-right direction. It can be suppressed from increasing.
  • the rotating shaft 4 is inserted through the inner peripheral side of the torsion spring 20
  • the other end side is the first support plate. It is necessary to hook it on the protrusion 31b of 31. Therefore, if the torsion spring 20 is provided between the first support plate 31 and the second support plate 32, the work of hooking the torsion spring 20 on the first support plate 31 and the second support plate 32 becomes complicated.
  • the torsion spring 20 is arranged on the inner surface of the first support plate 31 (outside between the first support plate 31 and the second support plate 32 facing each other), and the first support plate 31 and the first support plate 31 and the second support plate 32 are arranged.
  • the rotary damper 40 is arranged between the two support plates 32 facing each other.
  • the work of engaging the torsion spring 20 with the protrusion 31b of the first support plate 31 and the rotating shaft 4 can be performed outside between the facing portions of the first support plate 31 and the second support plate 32. Therefore, the torsion spring 20 can be easily assembled to the rotating shaft 4 and the first support plate 31.
  • assembling the rotary damper 40 to the first support plate 31 and the second support plate 32 does not require the work of hooking on the protrusion 31b like the torsion spring 20. Therefore, it is better to dispose the rotary damper 40 between the first support plate 31 and the second support plate 32 than to dispose the torsion spring 20 between the first support plate 31 and the second support plate 32. 2 Assembling work to the support plate 32 can be performed relatively easily.
  • the rotary damper 40 which is relatively easy to assemble to the rotating shaft 4 and the support member 30, is arranged between the first support plate 31 and the second support plate 32 facing each other, and the torsion spring 20 is arranged outside the facing space.
  • the torsion spring 20 is arranged on the inner surface of the first support plate 31 (outside between the facing portions of the first support plate 31 and the second support plate 32). It is preferable to do so.
  • the torsion spring 20 is simply provided on the inner surface of the first support plate 31, the arrangement space of the first support plate 31, the second support plate 32, and the torsion spring 20 in the left-right direction increases. If the facing distance between the first support plate 31 and the second support plate 32 is narrowed in order to suppress the increase in the arrangement space, the rotating shaft 4 cannot be stably supported.
  • the recess 31a is recessed on the inner surface of the first support plate 31, and the torsion spring 20 is arranged in the recess 31a. Further, the left-right facing distance between the outer surface of the first support plate 31 and the inner surface of the second support plate 32 is a region in which the recess 31a is not formed (the first support plate 31), as compared with the region in which the recess 31a is formed. And the area on the lower end side of the second support plate 32).
  • the facing distance between the first support plate 31 and the second support plate 32 can be secured in the region where the recess 31a is not formed (the region on the lower end side of the first support plate 31 and the second support plate 32).
  • the rotating shaft 4 can be stably supported.
  • the torsion spring 20 is arranged in the recess 31a recessed in the inner surface of the first support plate 31, even when the torsion spring 20 is arranged in the inner surface of the first support plate 31, the first It is possible to suppress an increase in the arrangement space of the support plate 31, the second support plate 32, and the torsion spring 20 in the left-right direction.
  • FIG. 3A is a side view of the vehicle seat 1 showing a state in which the seat is folded at the used position
  • FIG. 3B is a position where the seat is directed to the vertical position from the state of FIG. 3A.
  • It is a side view of the vehicle seat 1 which shows the state which has been rotated by a fixed quantity.
  • 4 (a) is a side view of the vehicle seat 1 showing a state in which the seat is rotated from the state of FIG. 3 (b) until it exceeds the vertical position
  • FIG. 4 (b) is a side view of FIG. 4 (a).
  • It is a side view of the vehicle seat 1 which shows the state which the seat was rotated to the storage position from the state of.
  • FIG. 5 (a) is a side view of the vehicle seat 1 showing a state in which the seat is rotated by a predetermined amount toward a vertical position from the state (storage position) of FIG. 4 (b), and FIG. 5 (b) is a side view. It is a side view of the vehicle seat 1 showing a state in which the seat is rotated from the state of FIG. 5A until it exceeds the vertical position.
  • FIG. 6 is a graph showing changes in torque (torque T1 due to the weight of the seat and torque T2 due to the torsion spring 20) when rotating the seat from the used position to the stored position.
  • the vertical axis of FIG. 6 indicates the magnitude of torque
  • the horizontal axis indicates the rotation angle of the seat from the used position.
  • FIG. 6 when the torques T1 and T2 are acting in the rotation direction toward the storage position, they are shown as positive values, and when they are acting in the rotation direction toward the use position, they are shown as negative values. It is shown by.
  • a position where the center of gravity G (see FIG. 3) of the seat is arranged above the rotation axis 4 in the vertical direction (arrow UD direction) is defined as a "vertical position”.
  • the center of gravity G of the folded seat at the used position is located above the rotation axis 4, and the straight line connecting the center of gravity G of the seat and the rotation axis 4 is slightly relative to the horizontal direction (this). In the embodiment, it is tilted by 16 °).
  • the torque T1 38.7 Nm in this embodiment
  • the weight of the seat itself acts on the center of gravity G of the folded seat, that is, the torque T1 in the rotation direction toward the use position.
  • the elastic force of the torsion spring 20 (see FIG. 1) is applied in the rotation direction from the use position to the storage position (vertical position). Therefore, in addition to the torque T1 due to the weight of the seat, the torque T2 of the torsion spring 20 directed in the direction opposite to the torque T1 due to the weight of the seat (in this embodiment, 24.8 N. m) is working.
  • the torque T1 due to the weight of the seat is obtained by multiplying the rotation direction component of the weight (N) of the seat at the center of gravity G of the seat around the rotation axis 4 and the distance (m) from the rotation axis 4 to the center of gravity G. is there. Further, the torque T2 of the torsion spring 20 is obtained by multiplying the rotational direction component of the elastic force (N) acting on the center of gravity G of the seat around the rotating shaft 4 and the distance (m) from the rotating shaft 4 to the center of gravity G. Is.
  • the rotation direction component is a component in a direction orthogonal to the straight line connecting the rotation axis 4 and the center of gravity G.
  • the torque T2 of the torsion spring 20 acts in the direction opposite to the torque T1 due to the weight of the seat, so that the seat is lifted from the used position (the seat is directed toward the vertical position).
  • the operation at the time of (rotating) can be assisted by the torque T2 of the torsion spring 20. Therefore, it is possible to reduce the operating force when lifting the seat from the used position (rotating it toward the storage position).
  • the torque T2 of the torsion spring 20 at the used position is set to a value smaller than the torque T1 due to the weight of the seat itself. Therefore, even if the lock mechanism (not shown) that locks the rotation from the used position to the storage position (vertical position) is released, the seat does not rotate so as to jump upward. That is, the seat remains in the used position due to its own weight until the occupant lifts the seat after the locking mechanism is released.
  • the torque T1 due to the weight of the seat and the torque T2 of the torsion spring 20 change with the rotation of the seat, and this change in torque will be described with reference to FIG.
  • the magnitude of the torque T1 due to the weight of the seat is a two-dot chain line
  • the magnitude of the torque T2 of the torsion spring 20 is a broken line
  • the magnitude of the torque (T1 + T2) obtained by combining these torques T1 and T2. are shown by solid lines.
  • both the torque T1 due to the weight of the seat and the torque T2 of the torsion spring 20 act. Therefore, the combined torque of these torques T1 and T2 (hereinafter, simply referred to as “combined torque (T1 + T2)”) is a torque that substantially acts on the seat (affects the operation of the seat). Therefore, when the combined torque (T1 + T2) shown in FIG. 6 is a negative value, the torque in the rotation direction toward the use position acts on the seat, and when it is a positive value, it is directed to the storage position. The torque in the rotational direction is acting on the seat.
  • the torque T1 due to the weight of the seat toward the use position gradually decreases (sincewise) as the seat approaches the vertical position, and becomes zero at the vertical position.
  • the torque T2 of the torsion spring 20 toward the storage position gradually (proportionally) decreases as the seat approaches the vertical position, but has a predetermined size (16 Nm in the present embodiment) even in the vertical position. )have.
  • the torque T2 of the torsion spring 20 has a predetermined size (16 Nm in the present embodiment) even in the vertical position.
  • the torque T2 of the torsion spring 20 has a predetermined size (16 Nm in the present embodiment) even in the vertical position.
  • the torque T1 due to the weight of the seat and the torque T2 of the torsion spring 20 rotate toward the storage position, respectively. Act in the direction. Therefore, the torque causes the seat to rotate toward the storage position at a relatively high rotation speed, but in the present embodiment, the torque T3 for decelerating the rotation speed is applied from the rotary damper 40 (see FIG. 1). .. As a result, the seat can be safely rotated toward the storage position.
  • the torque T3 (torque in the rotation direction toward the use position) of the rotary damper 40 is not transmitted to the seat in the rotation region from the use position to the vertical position (see FIG. 6).
  • the torque T3 of the rotary damper 40 can be suppressed from acting as a reaction force, so that the operating force when lifting the seat from the used position can be reduced.
  • the torque T2 of the torsion spring 20 gradually (proportionally) decreases as the seat approaches the storage position.
  • the torque T2 of the torsion spring 20 decreases over the entire rotation region from the use position to the storage position.
  • the torque T2 is configured to act on the seat.
  • the torque T2 of the torsion spring 20 acting on the seat can be relatively large in the vicinity of the vertical position and relatively small in the vicinity of the storage position. Therefore, it is possible to increase the rotation speed of the sheet near the vertical position and slow down the rotation speed of the sheet near the storage position.
  • the torque T2 of the torsion spring 20 acts on the seat in all the rotation regions from the use position to the storage position
  • the torque T2 of the torsion spring 20 also acts on the seat in the storage position as shown in FIG. 4 (b). It acts in the direction of rotation toward the storage position.
  • the seat in order to rotate the seat from the storage position to the use position, the seat must be opposed to both the torque T1 due to the weight of the seat and the torque T2 of the torsion spring 20. Need to lift. Therefore, if the torque T2 of the torsion spring 20 at the storage position becomes excessively large, it becomes difficult to lift the seat from the storage position.
  • the torque T2 of the torsion spring 20 at the storage position is set to 5 N ⁇ m or less (2.2 N ⁇ m in the present embodiment), so that when the seat is lifted from the storage position. , It is possible to prevent the reaction force of the torsion spring 20 due to the torque T2 from becoming excessively large. Therefore, even if the torque T2 of the torsion spring 20 is applied to the seat over the entire rotation region of the seat, it is possible to prevent the operating force when lifting the seat from the storage position from becoming excessive.
  • the torque of the rotary damper 40 (see FIG. 1) is not transmitted to the seat in the entire rotation area.
  • the torque of the rotary damper 40 can be suppressed from acting as a reaction force when the seat is lifted from the storage position, so that the operating force when the seat is lifted from the storage position can be reduced.
  • the torque T2 of the torsion spring 20 gradually increases (proportionally) from the storage position to the vertical position, the torque T2 of the torsion spring 20 is used when the seat is lifted from the storage position to the vertical position. It is possible to suppress a sudden increase in the reaction force due to. Therefore, the seat can be smoothly lifted from the storage position to the vertical position.
  • the rotation of the seat from the vertical position to the storage position by its own weight is decelerated by the torque T3 of the rotary damper 40, and the rotation of the seat from the vertical position to the used position by its own weight is reduced by the torsion spring 20. Since the seat is decelerated by the torque T2 of the above, the seat can be safely rotated toward both the storage position and the use position.
  • the torque T1 due to the weight of the seat and the torque T2 of the torsion spring 20 are combined. Therefore, in order to reduce the rotation speed (to rotate the seat safely), it is necessary to set the torque T3 of the rotary damper 40 to be relatively large.
  • the torque T3 of the rotary damper 40 when the seat is lifted from the used position or the stored position, the torque T3 of the rotary damper 40 does not act as a reaction force. Therefore, the torque T3 of the rotary damper 40 is set relatively large to raise the seat. It is possible to achieve both safe rotation and reduction of the operating force when lifting (rotating) the seat.
  • the present invention has been described above based on the above-described embodiment, the present invention is not limited to the above-described embodiment, and it is easy to make various modifications and improvements within a range that does not deviate from the gist of the present invention. It can be inferred.
  • the torsion spring 20 has been illustrated as an example of the elastic member, but the present invention is not necessarily limited to this.
  • the elastic member may be a coil spring or the like as long as it can apply an elastic force toward the storage position or the use position to the seat.
  • the torque T2 due to the elastic force of the pair of left and right torsion springs 20 is acted on in the same rotational direction and the torque T3 of the pair of left and right rotary dampers 40 are acted on in the same rotational direction has been described.
  • the torques of the pair of left and right torsion springs 20 may be different and act in different rotational directions, or the torques of the pair of left and right rotary dampers 40 may be different and act in different rotational directions.
  • the elastic force of the torsion spring 20 is applied in the rotational direction toward the storage position, but the present invention is not necessarily limited to this.
  • the elastic force of the torsion spring 20 may be applied in the rotational direction toward the position of use, or the torsion spring 20 may be omitted.
  • the elastic force of the torsion spring 20 (elastic member) is applied over the entire rotation region of the seat
  • the present invention is not necessarily limited to this.
  • the elastic force of the elastic member may be zero in the middle of the rotation region of the seat, or the direction of the torque generated by the elastic force of the elastic member may be opposite.
  • the elastic force of the elastic member When the elastic force of the elastic member is set to zero in the middle of the rotating region of the sheet, it is preferable to set the elastic force of the elastic member to zero at a position where the sheet rotating toward the storage position exceeds the vertical position. As a result, in the rotation region from the use position to the vertical position, it is possible to form a region in which the torque of the elastic member is larger than the torque due to the weight of the seat itself. Further, at the storage position, the torque due to the elastic force of the elastic member can be made zero (or a torque in the rotation direction toward the use position can be generated). As a result, the seat can be naturally rotated toward the vertical position, and the operating force when lifting the seat from the storage position can be reduced.
  • the support member 30 is composed of two members, the first support plate 31 and the second support plate 32, has been described, but the present invention is not necessarily limited to this.
  • the support member 30 may be composed of one member.
  • the present invention is not necessarily limited to this.
  • the torsion spring 20 may be provided on the inner surface side of the first support plate 31 in which the recess 31a is omitted.
  • the torsion spring 20 may be provided between the first support plate 31 and the second support plate 32 facing each other or on the outer surface side of the second support plate 32. In this case, it is preferable to provide the torsion spring 20 on the outer surface side of the second support plate 32. As a result, the workability of the assembling work of the torsion spring 20 can be ensured.
  • the rotary damper 40 is provided between the first support plate 31 and the second support plate 32 facing each other, but the present invention is not necessarily limited to this.
  • the rotary damper 40 may be provided on the inner surface side of the first support plate 31 or the outer surface side of the second support plate 32 (inner surface side or outer surface side of the support member 30).
  • the torque of the rotary damper 40 is not transmitted to the seat in the entire rotation region from the use position to the vertical position (rotation region from the vertical position to the storage position).
  • the case where the torque T3 of the rotary damper 40 is transmitted to the seat is described in the entire area of the above, but the case is not necessarily limited to this.
  • the torque of the rotary damper 40 is not transmitted to the seat at least from the start end of the rotation region from the used position to the vertical position to at least halfway (in the subsequent rotation region, the torque is applied). Any configuration (transmitting) is sufficient. As a result, the operating force when lifting the seat from the used position can be reduced.
  • the rotation angle of the seat from the vertical position is changed. It is preferable that the torque of the rotary damper 40 is not transmitted to the seat in the rotation region up to 40 to 50 °. As a result, the seat can be safely rotated toward the storage position while suppressing the rotation of the seat from stopping near the vertical position.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)

Abstract

L'invention concerne un siège de véhicule qui permet de pivoter un siège en toute sécurité tout en réduisant une force d'actionnement lorsque le siège est pivoté.　Lors de la rotation du siège d'une position d'utilisation à la position verticale, le couple d'un amortisseur rotatif (40) n'est pas transmis, de telle sorte que le couple de l'amortisseur rotatif (40) ne fait pas office de force de réaction lorsque le siège est pivoté à partir de la position d'utilisation. Dans la rotation du centre de gravité (G) du siège à partir du côté supérieur dans la direction verticale de l'arbre rotatif (4) à une position de stockage, le couple de l'amortisseur rotatif (40) est transmis au siège, de telle sorte que le siège peut être pivoté de manière sûre vers la position de stockage. Lors de la rotation de la position de stockage à la position d'utilisation, le couple de l'amortisseur rotatif (40) n'est pas transmis, de telle sorte que le couple de l'amortisseur rotatif (40) ne fait pas office de force de réaction lorsque le siège est piloté à partir de la position de stockage. Par conséquent, il est possible de pivoter le siège en toute sécurité tout en réduisant la force d'actionnement lorsque le siège est pivoté.
PCT/JP2020/002545 2019-03-29 2020-01-24 Siège de véhicule WO2020202732A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-066232 2019-03-29
JP2019066232A JP2022081708A (ja) 2019-03-29 2019-03-29 車両用シート

Publications (1)

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WO2020202732A1 true WO2020202732A1 (fr) 2020-10-08

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JP (1) JP2022081708A (fr)
WO (1) WO2020202732A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000142196A (ja) * 1998-11-17 2000-05-23 Honda Motor Co Ltd 車両用シートの支持構造
JP2005119495A (ja) * 2003-10-16 2005-05-12 Honda Motor Co Ltd 車両のシート構造
JP2006082763A (ja) * 2004-09-17 2006-03-30 T S Tec Kk 折畳み収納式自動車用シート
JP2007216704A (ja) * 2006-02-14 2007-08-30 Toyota Boshoku Corp 車両用シート
JP2009051233A (ja) * 2007-08-23 2009-03-12 Toyota Boshoku Corp 車両用跳ね上げ式シート
WO2009104586A1 (fr) * 2008-02-19 2009-08-27 テイ・エス テック株式会社 Siège escamotable pour véhicule automobile
JP2012210880A (ja) * 2011-03-31 2012-11-01 Honda Motor Co Ltd 車両用シート

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000142196A (ja) * 1998-11-17 2000-05-23 Honda Motor Co Ltd 車両用シートの支持構造
JP2005119495A (ja) * 2003-10-16 2005-05-12 Honda Motor Co Ltd 車両のシート構造
JP2006082763A (ja) * 2004-09-17 2006-03-30 T S Tec Kk 折畳み収納式自動車用シート
JP2007216704A (ja) * 2006-02-14 2007-08-30 Toyota Boshoku Corp 車両用シート
JP2009051233A (ja) * 2007-08-23 2009-03-12 Toyota Boshoku Corp 車両用跳ね上げ式シート
WO2009104586A1 (fr) * 2008-02-19 2009-08-27 テイ・エス テック株式会社 Siège escamotable pour véhicule automobile
JP2012210880A (ja) * 2011-03-31 2012-11-01 Honda Motor Co Ltd 車両用シート

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