WO2021100554A1 - Dispositif d'inclinaison - Google Patents

Dispositif d'inclinaison Download PDF

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Publication number
WO2021100554A1
WO2021100554A1 PCT/JP2020/041887 JP2020041887W WO2021100554A1 WO 2021100554 A1 WO2021100554 A1 WO 2021100554A1 JP 2020041887 W JP2020041887 W JP 2020041887W WO 2021100554 A1 WO2021100554 A1 WO 2021100554A1
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WO
WIPO (PCT)
Prior art keywords
lock
gear
teeth
tooth
common gear
Prior art date
Application number
PCT/JP2020/041887
Other languages
English (en)
Japanese (ja)
Inventor
貴裕 川原
木村　明弘
Original Assignee
シロキ工業株式会社
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
Priority claimed from JP2019208275A external-priority patent/JP2021079804A/ja
Priority claimed from JP2020171350A external-priority patent/JP2021079937A/ja
Application filed by シロキ工業株式会社 filed Critical シロキ工業株式会社
Publication of WO2021100554A1 publication Critical patent/WO2021100554A1/fr

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Classifications

    • 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
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable

Definitions

  • An embodiment of the present invention relates to a reclining device.
  • a seat mounted on a vehicle is composed of a seat cushion which is a seat surface and a seat back which is a back support surface.
  • a so-called reclining device that can adjust the posture of the seat according to the physique and preferences of the user (for example, passengers, etc.), usage conditions, etc., that is, the inclination angle of the seat back with respect to the seat cushion.
  • the angle can be finely adjusted in order to realize a seat back angle that does not cause fatigue.
  • the tilt angle of the seat back significantly and quickly.
  • the angle of the seat back can be adjusted by releasing the lock mechanism (engagement / disengagement mechanism) of the seat back with respect to the seat cushion by operating an operation lever or the like.
  • the planetary gear mechanism is composed of the first gear provided on the seat cushion side and the second gear provided on the seat back side, and the reduction ratio is increased to lock by the engagement / disengagement mechanism.
  • the angle of the seat back with respect to the seat cushion can be finely adjusted.
  • the seat back rotates (swings) while being eccentric, which makes the user seated in the seat feel uncomfortable. There was a problem that it was easy to give.
  • one of the problems of the present invention is to obtain a reclining device provided with an adjustment mechanism and an engagement / disengagement mechanism that can realize angle adjustment without swinging the seat back.
  • the reclining device is, for example, a power drive mechanism that executes the angle adjustment of the seat back with respect to the seat cushion by power from the drive source, and a lock for manually operating the angle adjustment of the seat back. It is equipped with a manual drive mechanism for releasing.
  • the power drive mechanism includes an internal gear having a first tooth portion having a first number of teeth and a second tooth different from the first number of teeth, which is rotatably arranged at a position facing the internal gear. Includes a common gear with a number of second teeth.
  • the manual drive mechanism has lock teeth that can lock the rotation of the common gear, a lock member that can move between the lock position and the unlock position, and a guide that guides the movement operation of the lock member.
  • the common gear Includes a member and locked teeth that are fixed to the common gear and can mesh with the lock teeth to form a locked state. Then, in the common gear, the locked teeth having the same diameter and the same number of teeth as the second tooth portion are arranged on the front and back surfaces with respect to the axial direction of the common gear. According to this configuration, for example, by extruding the second tooth portion with respect to the plate material by, for example, pressing, it becomes possible to form locked teeth on the back surface side of the plate material. As a result, the second tooth portion having the same diameter and the locked tooth can be arranged on the common gear, which can contribute to the miniaturization of the common gear (avoidance of increasing the diameter of the common gear) and, by extension, the miniaturization of the reclining device. In addition, gears for different purposes can be efficiently formed, which can contribute to cost reduction.
  • the manual drive mechanism of the reclining device is rotatably supported by, for example, a bracket that supports the guide member and the bracket that is concentric with the rotation center of the common gear.
  • a ring-shaped cam member for moving the lock member between the lock position and the unlock position is provided, and the lock member moves based on the rotational posture of the cam member to reach the lock position.
  • the unlocked position may be reachable.
  • the lock member can be stably moved based on the rotational posture of the cam member supported by the bracket, so that the locked state and the unlocked state can be switched smoothly and stably. can do.
  • the bracket of the reclining device includes, for example, a ring-shaped accommodating portion on the outer peripheral side of the guide member, and the cam member is a ring supported on the inner peripheral side of the accommodating portion.
  • the lock member may move in the inner diameter direction to reach the lock position on the inner peripheral side of the cam member, and may move in the outer diameter direction to reach the unlock position. ..
  • the lock member can be stably moved in the radial direction on the inner peripheral side of the cam member supported by the bracket without being eccentric, so that the locked state and the unlocked state can be switched. Can be realized smoothly and stably.
  • FIG. 1 is an exemplary and schematic side view showing a vehicle seat to which the reclining device according to the embodiment can be applied.
  • FIG. 2 is an exemplary and schematic exploded perspective view of the reclining device according to the embodiment, and is a view when the viewpoint is placed on the manual drive mechanism side.
  • FIG. 3 is an exemplary and schematic exploded perspective view of the reclining device according to the embodiment, and is a view when the viewpoint is placed on the power drive mechanism side opposite to the viewpoint of FIG.
  • FIG. 4 is an exemplary and schematic cross-sectional view of the reclining device according to the embodiment.
  • FIG. 5 is an exemplary and schematic diagram illustrating the meshing state of the gears of the power drive mechanism in the reclining device according to the embodiment.
  • FIG. 6 is an exemplary and schematic view illustrating the meshing state of the lock member and the gear of the manual drive mechanism in the reclining device according to the embodiment.
  • FIG. 7 is an exemplary and schematic diagram illustrating a locked state of the manual drive mechanism in the reclining device according to the embodiment.
  • FIG. 8 is an exemplary and schematic diagram illustrating an unlocked state of the manual drive mechanism in the reclining device according to the embodiment.
  • FIG. 1 is an exemplary and schematic side view showing a vehicle seat 100 to which the reclining device according to the embodiment can be applied.
  • the seat 100 is connected to a seat cushion 102, which is a seating surface on which a user (passenger) sits, with an adjustable angle in the direction of arrow A1 or arrow A2 with respect to the seat cushion 102. It is composed of a seat back 104 that serves as a back support surface.
  • the seat cushion 102 is fixed to a seat slider device 110 that can move in the direction of arrow B1 or arrow B2 on a rail 108 fixed to the floor 106, which is the floor surface of the vehicle.
  • the angle of the seat back 104 can be adjusted with respect to the seat cushion 102 with the rotating shaft 112 extending in the vehicle width direction as a fulcrum via the reclining device 10 of the present embodiment.
  • the reclining device 10 is arranged inside the seat 100, for example, coaxially with the rotation shaft 112.
  • the amount of movement of the seat cushion 102 in the arrow B1 direction or arrow B2 direction and the amount of angle adjustment of the seat back 104 in the arrow A1 direction or arrow A2 direction are determined by, for example, a drive source such as a motor that is driven according to the operating state of the adjustment switch SW. It can be adjusted by power. For example, by sliding the adjustment switch SW in the direction of arrow B1, the seat cushion 102 can be moved to a preset position or a desired position in the direction of arrow B1. Similarly, by sliding the adjustment switch SW in the direction of arrow B2, the seat cushion 102 can be moved to a preset position or a desired position in the direction of arrow B2.
  • the locked state of the seat cushion 102 is released, and the seat cushion 102 can be appropriately moved to the position in the B1 direction or the B2 direction. After the seat cushion 102 is moved, the seat cushion 102 can be fixed at a desired position by locking the slide lever LS.
  • the reclining device 10 operates, and the seat back 104 can be adjusted to a preset angle or a desired angle in the direction of arrow A1.
  • the adjustment switch SW in the direction of arrow A2
  • the reclining device 10 operates, and the seat back 104 can be adjusted to a preset angle or a desired angle in the direction of arrow A2.
  • the reclining lock release lever LR in a predetermined direction, the reclining lock of the reclining device 10 can be released, and the seat back 104 can be reclining at a desired angle with respect to the seat cushion 102.
  • the configuration of the adjustment switch SW is an example, and the automatic slide adjustment of the seat cushion 102 and the automatic reclining adjustment of the seat back 104 may be performed by separate switches.
  • the arrangement of the adjustment switch SW can be changed as appropriate, and may be provided on the dashboard, steering wheel, or the like, for example.
  • FIG. 1 shows, for example, the passenger seat of a right-hand drive vehicle.
  • the adjustment switch SW, the reclining lock release lever LR, and the like may be arranged on the opposite side of the seat 100.
  • FIG. 2 and 3 are exploded perspective views of the reclining device 10 of the present embodiment
  • FIG. 2 is a view when viewed from the arrow L direction
  • FIG. 3 is a view when viewed from the arrow R direction.
  • FIG. 4 is a cross-sectional view of the reclining device 10 in an assembled state.
  • the reclining device 10 includes a power drive mechanism D (sometimes referred to as a power drive mechanism or an adjustment mechanism) that executes angle adjustment of the seat back 104 with respect to the seat cushion 102 by power from a drive source (for example, an electric motor), and a seat. It is composed of a manual drive mechanism M (sometimes referred to as a manual drive mechanism or an engagement / disengagement mechanism) that releases the reclining lock in order to enable manual operation of the angle adjustment of the back 104.
  • a power drive mechanism D sometimes referred to as a power drive mechanism or an adjustment mechanism
  • a manual drive mechanism M sometimes referred to as a manual drive mechanism or an engagement / disengagement mechanism
  • the power drive mechanism D includes a common gear 12, a first bush 14, a striker pin 16, a wedge spring 18, a wedge 20, an eccentric cam plate 22, an external gear 24, an internal gear 26, a second bush 28, an outer ring 30, and the like. It is composed of.
  • the manual drive mechanism M includes a common gear 12 shared with the power drive mechanism D, a lock member 32 (sometimes referred to as a pole), a cam ring 34 (cam member), a cam plate 36, a lower arm 38 (bracket), and a lock spring. It is composed of 40 mag.
  • the cam plate 36 is maintained in an assembled state while being sandwiched between the outer peripheral ring 30 and the lower arm 38.
  • the outer peripheral ring 30 is provided with an opening hole 30a so that the end face of the internal gear 26 is exposed so that the outer ring 30 can be connected to a seat back frame or the like that supports the seat back 104.
  • the lower arm 38 is fixed to a cushion frame (not shown), a floor 106, or a rail 108 that constitutes the seat cushion 102. That is, it is fixed to the vehicle side.
  • the common gear 12 is, for example, a disk-shaped member (steel plate or the like) having a plate-like member (steel plate or the like) pressed or cut to form a plurality of step portions to improve the strength. It is a member.
  • a through hole 12c is formed in a portion corresponding to the rotation center axis O by punching, and the common gear 12 is recessed toward the power drive mechanism D side by press working.
  • a bottom portion 12a and a side surface portion 12b are formed.
  • internal teeth second internal teeth 42
  • second external teeth 44 protruding external teeth
  • the second internal tooth 42 and the second external tooth 44 have the same diameter and the same rotation center axis O, and are molded and arranged on the front and back surfaces in the axial direction.
  • the second internal tooth 42 and the second external tooth 44 can be formed on the common gear 12 at the same time, which can contribute to simplification, efficiency, and cost reduction of the manufacturing process.
  • the common gear 12 can be downsized (small diameter).
  • the diameter of the second internal tooth 42 and the diameter of the second external tooth 44 may be different.
  • the external teeth (first external teeth 46) of the external tooth gear 24 are engaged with the second internal teeth 42, and the lock member 32 is locked with the second external teeth 44.
  • the teeth (third internal tooth 48) mesh. The meshing of each gear will be described later.
  • the internal gear 26 is also a disk-shaped member with improved strength, in which a plate-shaped member (for example, a steel plate) is pressed or cut to form a step portion.
  • a plate-shaped member for example, a steel plate
  • a through hole 26c is formed in a portion corresponding to the rotation center axis O by punching, and a common gear 12 (manual drive mechanism M) is formed by pressing.
  • Side recessed bottom portion 26a and side surface portion 26b are formed.
  • internal teeth first internal teeth 50
  • first internal teeth 50 can be formed on the side surface portion 26b (recessed inner peripheral surface).
  • a plurality of (for example, three) fastening members 26d protrude on the surface on the back side of the surface on which the first internal tooth 50 is formed. There is.
  • the fastening member 26d By inserting and welding the fastening member 26d into a hole formed in the seat back frame or the like that supports the seat back 104, the seat back 104 can be fixed to the internal gear 26 (reclining device 10).
  • the first internal tooth 50 is formed by a gear-shaped press die, a protruding gear-shaped protrusion 52 is formed on the back surface as shown in FIG.
  • the gear-shaped protrusion 52 can be used as a spline, and may be meshed with a spline groove formed in a seat back frame or the like. In this case, the seat back 104 can be more firmly fixed to the internal gear 26.
  • the external gear 24 meshes with the second internal tooth 42 of the common gear 12 and has a first external tooth 46 that can mesh with the first internal tooth 50 of the internal gear 26 on the outer peripheral surface. It is a ring-shaped member provided with an opening 24a.
  • the first external tooth 46 for example, half of the tooth width meshes with the second internal tooth 42 of the common gear 12, and the other half region meshes with the first internal tooth 50 of the internal gear 26. It is configured as follows. In the case of the present embodiment, the number of teeth of the second internal tooth 42 of the common gear 12 and the number of teeth of the first internal tooth 50 of the internal gear 26 are different.
  • the second internal tooth 42 of the common gear 12 is set to have a smaller number of teeth than the first internal tooth 50 of the internal gear 26.
  • the first external teeth 46 of the external gear 24 are set to have a smaller number of teeth than the second internal teeth 42 of the common gear 12.
  • the first internal tooth 50 of the internal gear 26 is set to 27, the second internal tooth 42 of the common gear 12 is set to 26, and the first external tooth 46 of the external gear 24 is set to 23. Therefore, as shown in FIG. 5, when the external gear 24 is combined so as to mesh with the common gear 12 and the internal gear 26, the external gear 24 with respect to the common gear 12 and the internal gear 26. It will rotate eccentrically.
  • the first external tooth 46 of the external gear 24 repeatedly meshes with and disengages from the second internal tooth 42 of the common gear 12 and the first internal tooth 50 of the internal gear 26. ..
  • the external gear 24 makes one rotation.
  • the internal gear 26 rotates in the same direction as the external gear 24 by one tooth with respect to the common gear 12 (the common gear 12 is non-rotating).
  • the difference in the number of teeth between the second internal tooth 42 and the first internal tooth 50 is different by "1", but the difference in the number of teeth may be 2 or more, depending on the angle adjustment speed to be realized. Can be changed as appropriate.
  • a disk-shaped eccentric cam plate 22 is fitted into the opening 24a formed in the external gear 24.
  • An opening 22a eccentric from the rotation center axis O is formed in the eccentric cam plate 22, and a striker pin 16, a wedge spring 18, and two wedges 20 (20a, 20b) are housed therein.
  • the striker pin 16 is a tubular member having a flange around it. One end of the tubular portion is inserted into the through hole 12c of the common gear 12 via the first bush 14, and the other end is a through hole of the internal gear 26. It is inserted into the 26c via the second bush 28 and is supported so that it can rotate smoothly and stably.
  • the tubular portion of the striker pin 16 constitutes a bearing portion 16a extending along the rotation center axis O, and a spline or the like is formed on the inner peripheral surface of the bearing portion 16a.
  • a drive shaft DS of a drive source such as a motor that automatically performs reclining adjustment is inserted into the bearing portion 16a and fixed by spline fitting.
  • two protrusions 16b (16ba, 16bb) are formed on a part of the flange on the outer peripheral surface of the striker pin 16, and the protrusions 16b are configured to abut on one end of the arc-shaped wedge 20. ..
  • a drive shaft DS of a drive source such as a motor that automatically performs reclining adjustment
  • two protrusions 16b (16ba, 16bb) are formed on a part of the flange on the outer peripheral surface of the striker pin 16, and the protrusions 16b are configured to abut on one end of the arc-shaped wedge 20.
  • the external gear 24 can be eccentrically rotated in the reverse direction by the reverse drive of the drive shaft DS.
  • the substantially C-shaped wedge spring 18 shown in FIG. 2 urges the ends of the wedges 20 (20a, 20b) in the separation direction (circumferential direction) inside the opening 22a of the eccentric cam plate 22. This prevents the wedge 20 from rattling (vibrating) inside the opening 22a.
  • the internal gear 26 is combined with the external gear 24 by one tooth with respect to the common gear 12. Rotate in the same direction. That is, the angle of the seat back 104 connected to the internal gear 26 can be finely adjusted. In this case, only the internal gear 26 rotates eccentrically with respect to the external gear 24, and the internal gear 26 rotates about the rotation center axis O with respect to the common gear 12. Therefore, when the angle of the seat back 104 is adjusted by using the power drive mechanism D, it is possible to prevent the seat back 104 from swinging due to the eccentric movement, and it is possible to prevent the user from feeling uncomfortable.
  • FIG. 6 is an exemplary and schematic view illustrating the meshing state of the third internal tooth 48 of the lock member 32 of the manual drive mechanism M and the second external tooth 44 of the common gear 12, and in FIG. 3, the arrow R It is an assembly drawing seen from the direction.
  • FIG. 7 is an exemplary and schematic view for explaining the locked state Rst of the manual drive mechanism M, and the upper row is a view of the lock member 32 and the like seen through the cam plate 36 from the direction of arrow L, and the lower row is a lower row. Is a diagram in which the cam plate 36 is removed to expose the relationship between the cam ring 34 and the lock member 32. Similarly, FIG.
  • FIG 8 is an exemplary and schematic view illustrating the unlocked state NRst of the manual drive mechanism, and the upper row is a view of the lock member 32 and the like seen through the cam plate 36 from the direction of arrow L.
  • the lower part is a diagram in which the cam plate 36 is removed to expose the relationship between the cam ring 34 and the lock member 32.
  • the manual drive mechanism M unlocks the seat back 104 with respect to the seat cushion 102 so that the seat back 104 can freely tilt with respect to the seat cushion 102 when the angle of the seat back 104 is manually adjusted. It is a mechanism to make. Further, the manual drive mechanism M is a mechanism for locking the seat back 104 when the power drive mechanism D automatically adjusts the angle of the seat back 104 and when the adjustment angle state of the seat back 104 with respect to the seat cushion 102 is maintained.
  • the second internal tooth 42 is formed on the common gear 12
  • the second external tooth 44 formed on the back surface side (manual drive mechanism M side) and the third internal tooth 48 of the lock member 32 are meshed with each other.
  • a locked state is formed by letting the teeth engage, and an unlocked state is formed by disengaging them.
  • the lock member 32 is a block-shaped member having a substantially rectangular parallelepiped shape, and is radially attached to and detached from the second outer tooth 44 on the outer peripheral side of the common gear 12. Possible, for example, are evenly spaced. In the case of the present embodiment, four lock members 32 are arranged at 90 ° intervals, but the number of lock members 32 can be appropriately changed as long as the strength that can maintain the locked state of the seat back 104 with respect to the seat cushion 102 can be secured. It may be 3 or less, or 5 or more.
  • the lock member 32 has a curved surface corresponding to the pitch circle of the second external teeth 44 of the common gear 12, and can mesh with the second external teeth 44 along the curved surface, for example, 3.
  • a third internal tooth 48 composed of one tooth is formed. The number of teeth of the third internal tooth 48 can be appropriately changed as long as the meshing strength capable of maintaining the locked state of the seat back 104 with respect to the seat cushion 102 can be secured.
  • the lock member 32 is provided with leg portions 32a on the left and right sides of the third internal tooth 48, and the outer surface of the leg portion 32a is guided by a pair of guide members 38a formed on the lower arm 38. Is forming. As shown in FIG. 3, the plate-shaped lower arm 38 can be formed into a protruding guide member 38a by press working or cutting. The guide member 38a restricts the movement of the lock member 32 in the circumferential direction and allows the lock member 32 to move only in the radial direction.
  • one lock member 32 is sandwiched between a pair of guide members 38a to guide the lock member 32.
  • the guide member The form can be changed as appropriate.
  • one guide member may guide the lock member 32.
  • the cam ring 34 has four cam portions 34a corresponding to the four lock members 32 arranged at equal intervals on the outer peripheral side of the second outer tooth 44. To be equipped with.
  • the cam portion 34a is, for example, a semicircular protrusion protruding inward in the radial direction, and is formed on the end surface of one of the leg portions 32a of the lock member 32 so as to be in contact with the sliding surface 32c.
  • the cam portion 34a of the cam ring 34 is formed so as to abut on one of the two leg portions 32a of the lock member 32.
  • the sliding surface 32c may be formed on both leg portions 32a of the lock member 32, and the cam ring 34 may be configured so that the cam portion 34a abuts on both of them.
  • a dowel 32d is formed on the lower arm 38 side in the axial direction of the rotation center axis O of the lock member 32.
  • the dowel 32d is inserted into a cam groove 36a formed in a disc-shaped cam plate 36 arranged between the cam ring 34 and the lower arm 38.
  • the cam groove 36a of the cam plate 36 communicates with the circumferential groove 36a1 extending in the substantially circumferential direction of the cam plate 36 and the circumferential groove 36a1 and has a substantially diameter. It is composed of an inclined groove 36a2 extending outward in the direction.
  • the circumferential groove 36a1 is a position (lock position) in which when the dowel 32d moves from the inclined groove 36a2 to the circumferential groove 36a1, the lock member 32 engages the third inner tooth 48 and the second outer tooth 44 by the cam ring 34 described above. ) Is formed so that it can be reached. Further, in the inclined groove 36a2, the dowel 32d is guided from the circumferential groove 36a1 to the inclined groove 36a2 to reach the outer peripheral side end portion, so that the lock member 32 is not meshed with the third inner tooth 48 and the second outer tooth 44. It is formed so as to reach the position (locking / unlocking position).
  • a plurality of (for example, four) dowels 34b are provided on the cam ring 34 in the circumferential direction at equal intervals, for example, on the cam plate 36 side in the axial direction of the rotation center axis O. Is formed in.
  • a plurality of (for example, 4) positioning holes 36b are formed in the cam plate 36 at positions corresponding to the dowels 34b.
  • the cam ring 34 and the cam plate 36 may be formed as an integral part in advance.
  • the cam ring 34 integrated with the cam plate 36 surrounds the outer peripheral surface of the guide member 38a on the forming surface side of the guide member 38a centering on the through hole 38b formed at the position where the rotation center axis O passes.
  • the ring-shaped storage portion 38c formed so as to project is rotatably supported concentrically with the rotation center axis O.
  • the cam ring 34 (cam plate 36) can smoothly and stably rotate (slide) with respect to the lower arm 38 without being eccentric.
  • the lock member 32 which is moved in the radial direction by the cam ring 34 (cam plate 36), also moves smoothly and stably inside (inner peripheral side) in the radial direction of the cam ring 34 (cam plate 36) to the lock position. Will be reachable.
  • the lock member 32 can move in the outer diameter direction to reach the unlocked position.
  • the second outer tooth 44 formed on the back surface side of the common gear 12 by forming the second inner tooth 42 can be used for locking. It can be used as a gear.
  • the cam plate 36 is formed with a bearing portion 36c into which the operation shaft MS (see FIG. 4) of the reclining lock release lever LR (see FIG. 1) is inserted at a position where the rotation center axis O passes.
  • the bearing portion 36c penetrates the through hole 38b provided in the lower arm 38 to expose the tip portion to the front side of the lower arm 38.
  • a spline groove or the like is formed on the inner peripheral surface of the bearing portion 36c, and by fixing the operation shaft MS by spline fitting, the cam plate 36 and the integrated cam ring 34 can be moved by the operating force of the reclining lock release lever LR. Can be rotated.
  • a relief hole 36d for escaping the guide member 38a when the cam plate 36 is assembled to the lower arm 38 is formed corresponding to the position of the guide member 38a.
  • eight escape holes 36d are formed corresponding to the number of guide members 38a.
  • the width of the relief hole 36d in the circumferential direction may be set wider than the rotation width of the cam ring 34 (cam plate 36). For example, the width corresponding to the distance between the rotation position of the cam ring 34 (cam plate 36) in which the dowel 32d is located at the end of the circumferential groove 36a1 and the rotation position when the dowel 32d is located at the end of the inclined groove 36a2. It may be set wider.
  • the partition between the two escape holes 36d existing between the adjacent cam grooves 36a may be omitted to form a large escape hole (four large escape holes as a whole).
  • the lock spring 40 is, for example, a spiral spring that constantly urges the cam plate 36 together with the cam ring 34 in the counterclockwise direction in FIG. 7.
  • the cam plate 36 and the cam ring 34 integrated with the cam plate 36 are always urged in the counterclockwise direction.
  • the lock member 32 is moved (urged) inward in the radial direction to maintain the meshed state of the third internal tooth 48 and the second external tooth 44, that is, the locked state.
  • the seat back 104 is driven by a motor to adjust the angle of the seat cushion 102 by using the power drive mechanism D.
  • the user seated on the seat 100 slides the adjustment switch SW shown in FIG. 1 in a desired direction in order to specify the driving direction (rotation direction) of the reclining motor.
  • the adjustment switch SW is slid to the arrow B1.
  • the adjustment switch SW is slid to the arrow B2.
  • the adjustment switch SW While the adjustment switch SW is being slid, the drive shaft DS of the motor is rotationally driven to operate the power drive mechanism D, and the angle of the seat back 104 can be adjusted.
  • the adjustment switch SW returns to the neutral position and the rotation of the motor is stopped.
  • the cam ring 34 and the cam plate 36 are rotated in the lock direction by the urging force of the lock spring 40. That is, the lock member 32 is moved to the lock position. Therefore, the third internal tooth 48 of the lock member 32 and the second external tooth 44 of the common gear 12 mesh with each other, and the common gear 12 is fixed to the lower arm 38.
  • the angle of 104 can be adjusted only by the rotation of the striker pin 16, that is, by driving the reclining motor.
  • the common gear 12 (in this case, the common gear 12 is not rotated in the locked state by the lock member 32) and the internal gear 26 as described above.
  • the external gear 24 rotates eccentrically, and the internal gear 26 to which the seat back 104 is connected rotates around the rotation center axis O without being eccentric with respect to the common gear 12.
  • the internal gear 26 rotates in the same direction as the external gear 24 by one tooth with respect to the common gear 12. That is, the angle of the seat back 104 connected to the internal gear 26 can be finely adjusted.
  • the angle of the seat back 104 is adjusted by using the power drive mechanism D, it is possible to prevent the seat back 104 from swinging due to the eccentric movement, and it is possible to prevent the user from feeling uncomfortable.
  • the user can stop the angle adjustment of the seat back 104 by stopping the operation of the adjustment switch SW when the seat back 104 reaches a desired adjustment angle.
  • the angle of the seat back 104 can be adjusted almost at the same time as the operation of the adjustment switch SW is stopped.
  • the seat back 104 is fixed at the adjustment angle. The same applies to the case where the rotation direction of the drive shaft DS is switched to adjust the angle of the seat back 104 in the opposite direction.
  • the lock spring 40 is attached in a state where the leaning load on the seat back 104 is eliminated (such as when the back or hand is released from the seat back 104).
  • the reclining lock release lever LR is rotated in a predetermined direction (in the case of FIG. 7, in the clockwise direction) against the force.
  • the cam plate 36 and the cam ring 34 integrated with the operation shaft MS rotate, and the cam portion 34a of the cam ring 34 that is in contact with the cam plate 36 is disengaged from the sliding surface 32c of the lock member 32, and the dowel 32d of the lock member 32 is released.
  • the seat back 104 may be urged by an urging member (spring or the like) so as to fall forward in the unlocked state, the seat back 104 is moved forward at the same time as the operation of the reclining lock release lever LR. It tilts greatly. Further, the seat back 104 can be tilted backward by pushing the seat back 104 backward with a hand or the back in the unlocked state.
  • an urging member spring or the like
  • the cam plate 36, the cam ring 34, and the reclining lock release lever LR rotate counterclockwise, for example, due to the urging force of the lock spring 40. ..
  • the cam portion 34a of the cam ring 34 pushes down the sliding surface 32c of the lock member 32 inward in the radial direction, and the dowel 32d of the lock member 32 is guided to the circumferential groove 36a1 along the cam groove 36a of the cam plate 36.
  • the mode shown in the lower part of FIG. 8 is restored to the state shown in the lower part of FIG. That is, the second outer tooth 44 of the common gear 12 and the third inner tooth 48 of the lock member 32 mesh with each other to form a locked state, and the seat back 104 is fixed to the seat cushion 102 at a desired angle.
  • a reclining device including a power drive mechanism D (adjustment mechanism) and a manual drive mechanism M (engagement / disengagement mechanism) that can realize angle adjustment without swinging the seat back 104 is realized. can do.
  • the reclining device 10 applied to the reclining seat for a vehicle is shown in the above-described embodiment, the reclining device 10 is not limited to the seat for a vehicle.
  • the reclining device 10 of the present embodiment can be applied to any seat that can be reclined by using the power of a drive source, such as a seat for an airplane, a seat for a ship, and a seat used in various attractions. A similar effect can be obtained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Seats For Vehicles (AREA)

Abstract

L'invention concerne un dispositif d'inclinaison comprenant un mécanisme de réglage et un mécanisme d'engagement/désengagement, qui peut réaliser un réglage d'angle sans faire pivoter le dossier du siège. Le dispositif d'inclinaison comprend un mécanisme motorisé et un mécanisme à commande manuelle. Le mécanisme motorisé comprend : un engrenage interne comportant une première partie de dent dotée d'un premier nombre de dents ; et un engrenage commun qui est disposé de manière rotative à une position faisant face à l'engrenage interne et qui comporte une seconde partie de dent dotée d'un second nombre de dents différent du premier nombre de dents. En outre, le mécanisme à commande manuelle comprend : un élément de verrouillage qui comporte une dent de verrouillage permettant de verrouiller la rotation de l'engrenage commun et qui peut se déplacer entre une position de verrouillage et une position de déverrouillage ; un élément de guidage qui guide l'opération de déplacement de l'élément de verrouillage ; et des dents verrouillées qui sont fixées à l'engrenage commun et qui peuvent s'engager avec la dent de verrouillage pour former un état verrouillé. Dans l'engrenage commun, les dents verrouillées présentant le même diamètre et le même nombre de dents que les dents de la seconde partie de dent sont disposées sur les surfaces avant et arrière dans le sens axial de l'engrenage commun.
PCT/JP2020/041887 2019-11-18 2020-11-10 Dispositif d'inclinaison WO2021100554A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2019-208275 2019-11-18
JP2019208275A JP2021079804A (ja) 2019-11-18 2019-11-18 リクライニング装置
JP2020171350A JP2021079937A (ja) 2020-10-09 2020-10-09 リクライニング装置
JP2020-171350 2020-10-09

Publications (1)

Publication Number Publication Date
WO2021100554A1 true WO2021100554A1 (fr) 2021-05-27

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Application Number Title Priority Date Filing Date
PCT/JP2020/041887 WO2021100554A1 (fr) 2019-11-18 2020-11-10 Dispositif d'inclinaison

Country Status (1)

Country Link
WO (1) WO2021100554A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09313285A (ja) * 1996-01-22 1997-12-09 Bertrand Faure Equip Sa 車両用座席のヒンジ機構およびそのヒンジ機構を含む座席
JP2006034729A (ja) * 2004-07-28 2006-02-09 Aisin Seiki Co Ltd リクライニング装置
JP2007229055A (ja) * 2006-02-28 2007-09-13 Fuji Kiko Co Ltd 車両用シートリクライニング装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09313285A (ja) * 1996-01-22 1997-12-09 Bertrand Faure Equip Sa 車両用座席のヒンジ機構およびそのヒンジ機構を含む座席
JP2006034729A (ja) * 2004-07-28 2006-02-09 Aisin Seiki Co Ltd リクライニング装置
JP2007229055A (ja) * 2006-02-28 2007-09-13 Fuji Kiko Co Ltd 車両用シートリクライニング装置

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