WO2011135950A1 - 車両用シートリフター装置 - Google Patents
車両用シートリフター装置 Download PDFInfo
- Publication number
- WO2011135950A1 WO2011135950A1 PCT/JP2011/056893 JP2011056893W WO2011135950A1 WO 2011135950 A1 WO2011135950 A1 WO 2011135950A1 JP 2011056893 W JP2011056893 W JP 2011056893W WO 2011135950 A1 WO2011135950 A1 WO 2011135950A1
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- WIPO (PCT)
- Prior art keywords
- unlock
- cam
- lock
- rotating
- rotation
- Prior art date
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Classifications
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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
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/1605—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the cinematic
- B60N2/161—Rods
- B60N2/1615—Parallelogram-like structure
-
- 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
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/1635—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the drive mechanism
- B60N2/165—Gear wheel driven mechanism
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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
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/1635—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the drive mechanism
- B60N2/167—Ratchet mechanism
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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
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/1675—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable with weight compensating means
-
- 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
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/1685—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by a lock
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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
- B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
- B60N2/43—Safety locks
Definitions
- the present invention relates to a vehicle seat lifter device for adjusting the height of a seat cushion.
- a vehicle seat lifter device for adjusting the height of the seat cushion is provided in the vehicle seat, and the vehicle seat lifter is operated by operating an operation lever in a state where an occupant is seated on the vehicle seat. The device is activated so that the height of the seat cushion can be adjusted.
- the vehicle seat lifter device for example, the one described in Patent Document 1 is known.
- the vehicle seat lifter described in Patent Document 1 uses a roller clutch mechanism by friction for switching the movement of the operation lever and holding the lift position of the seat.
- the vehicle seat lifter device uses a parallel link mechanism, Two link members are rotationally connected by a sector gear and a pinion gear, and the pinion gear is rotationally driven by a roller clutch mechanism. The occupant can sequentially raise or lower the vehicle seat by reciprocating the operation lever upward or downward from the neutral position while sitting on the vehicle seat.
- the vehicle seat lifter device needs to have a structure that can hold the lift position of the vehicle seat in the event of a vehicle collision.
- the frictional roller clutch mechanism since the frictional roller clutch mechanism is used to hold the lift position of the vehicle seat, the external force applied to the vehicle seat at the time of the vehicle collision causes the link member to When it is added to the roller clutch mechanism, there is a possibility that the lift position of the vehicle seat cannot be maintained.
- the present invention has been made to solve the above-described conventional problems, and an object thereof is to provide a vehicle seat lifter device that can maintain the lift position of a vehicle seat even when an external force is applied to the vehicle seat. Is.
- the invention according to claim 1 is a pair of left and right base frames that support a seat cushion, and a pair of left and right rear link members that are pivotally attached to the rear portions of the pair of left and right base frames, respectively.
- a torque rod that connects the pair of left and right rear link members so as to be able to transmit torque, and left and right ends that are pivotally connected to the front portions of the pair of left and right base frames to form a parallel link mechanism.
- a pair of front link members, a rotation device that relatively rotates the base frame and the rear link member, and a locking member that is supported by a first rotation member fixed to the base frame side so as to be movable are the rear link.
- An engagement / disengagement mechanism that engages / disengages with a second rotating member fixed to the member side, and the engagement / disengagement mechanism that is rotatably supported on the base frame side.
- a rotating member to be operated, wherein the locking member engages with the second rotating member and restricts relative rotation between the first rotating member and the second rotating member, or the locking member is A locking / unlocking device that is unlocked by separating from the second rotating member and allowing the relative rotation; and an operation member that is rotatably supported by the base frame and held in a neutral position. It is.
- the operation member according to the first aspect is configured to rotate the rotation member of the lock / unlock device in conjunction with the rotation of the operation member in one direction from the neutral position.
- the lock / unlock device is placed in the unlocked state while the device is rotated from the neutral position to the first position, and the lock / unlock device is operated while being rotated from the first position to the second position.
- the lock / unlock device can be returned to the locked state, and the operation member can be returned to the neutral position.
- the lock member of the lock / unlock device is rotated in conjunction with the rotation in the other direction from the position, and the lock / unlock mechanism is rotated while the operation member is rotated from the neutral position to the third position.
- the click device and the unlocked state is by providing the third locking and unlocking device actuating mechanism position and a is returned to the neutral position the locking and unlocking device to allow return to the locked state.
- the operation member is operated in conjunction with the rotation of the operation member from the neutral position in the one direction, and the operation member rotates from the neutral position to the first position.
- the rear link member is rotated with respect to the base frame in a direction in which the seat cushion is lifted by driving the rotating device while rotating from the first position to the second position.
- the operation member is moved while returning to the neutral position, and is operated in conjunction with the rotation of the operation member from the neutral position to the other direction, and the operation member rotates from the neutral position to the third position.
- a rotating device driving mechanism that allows the rotating device to freely rotate relative to the base frame while the rotating device is in a freely rotating state.
- the rotating device includes: a sector gear provided integrally with the rear link member; and a pinion gear that meshes with the sector gear and is rotatably supported by the base frame.
- the rotating device drive mechanism includes a claw wheel integrally provided coaxially with the pinion gear, and the claw wheel rotatably supported by the operation member, and the claw wheel when the operation member is rotated in the one direction.
- the pinion gear is engaged with a car to rotationally drive, and when the operation member is rotated in the other direction, a feed claw that is disengaged from the ratchet wheel, and the operation member fixed to the base frame And a separation member that contacts the feed claw while being turned from the neutral position to the third position and separates the feed claw from the claw wheel.
- one end is engaged with the base frame, and the other end is engaged with the pinion gear of the rotating device so as to urge the base frame in a direction to move the base frame upward.
- a base frame raising biasing means is provided.
- the pitch angle of the inner teeth of the lock / unlock device is C
- the ratio of the rotational speed of the sector gear to the rotational speed of the pinion gear is A
- the invention according to claim 7 is the shaft of the torque rod according to any one of claims 2 to 6, wherein the second rotating member is connected to the first rotating member fixed to the base frame side via a bearing portion.
- a cam member that is fitted so as to be relatively rotatable about a center, and is supported by the first rotating member so that the locking member can move only in the radial direction, and that moves the locking member forward and backward in the radial direction.
- the second rotating member is formed with an internal tooth that engages with and disengages from an external tooth formed at the tip of the locking member, and the cam member is rotated by the rotating member. Accordingly, the locking member is moved in the radial direction, and the external teeth mesh with or disengage from the internal teeth, whereby the lock / unlock device is in the locked state or the unlocked state.
- the invention according to claim 8 is the invention according to claim 7, wherein the lock / unlock device actuating mechanism is configured such that the lock / unlock device is unlocked while the operation member is rotated from the neutral position to the first position.
- An unlock cam that pushes a contact portion provided at an end of the rotating member so as to be locked to rotate the rotating member to an unlock position, and the operating member is in the first position.
- a holding cam that holds the rotating member in the unlocked position by abutting against the abutting portion so that the lock / unlock device is maintained in the unlocked state while being rotated from the second position to the second position.
- the moving member is rotated to the lock position, and the unlock cam is fixed to the operation member and is fixed to the operation member so as to be swingable.
- the contact portion of the rotating member rotated to the lock position is configured to move the unlocking cam.
- the lock cam is swung to pass between the fixed unlock cam and the swing unlock cam and to face the swing unlock cam at an initial position.
- the locking member movably supported by the first rotating member fixed to the base frame side is provided on the rear link member side.
- a locked state in which the relative rotation between the first rotating member and the second rotating member is restricted or an unlocked state in which the relative rotation is allowed by being engaged with or disengaged from the second rotating member fixed to An engaging / disengaging mechanism is provided. Therefore, the vehicle seat lifter device can firmly hold the lift position of the vehicle seat even when an external force applied to the seat at the time of a vehicle collision is applied to the engagement / disengagement mechanism via the rear link member.
- the rotating device has a function of rotating the base frame and the rear link member relative to each other.
- the rotating device and the lock / unlock device It is configured to be operable by an operation member via a lock / unlock device operating mechanism. Therefore, it is not necessary to reciprocate the operation member many times as in the conventional case, and the lift adjustment of the vehicle seat can be easily performed.
- the rotating device driving mechanism makes the rotating device in a freely rotating state while the operating member rotates from the neutral position to the third position in the other direction.
- the lift adjustment of the vehicle seat can be quickly performed by freely rotating the rear link member relative to the base frame.
- the rotating device is configured by a gear mechanism
- the rotating device drive mechanism is configured by a ratchet mechanism. Therefore, by adjusting the pitch angle of the gear and the ratchet The relative rotation angle between the base frame and the rear link member, that is, the lift adjustment amount of the vehicle seat can be arbitrarily adjusted.
- the base frame raising and urging means since the base frame raising and urging means always urges the base frame in the direction of raising, the lock / unlock device is used to lower the base frame. After the vehicle is unlocked, the vehicle seat can be lowered with the weight of the occupant and adjusted to an arbitrary height, and the operability of the vehicle seat lifter device can be improved.
- the pitch angle C of the internal teeth of the lock / unlock device is the ratio A of the rotational speed of the sector gear to the rotational speed of the pinion gear and the pitch angle B of the claw wheel. Therefore, the lock / unlock device can be surely brought into the locked state for each operation of the operation member for rotating the hook wheel by one pitch angle.
- the lock / unlock device includes a cam member that is supported so that the locking member is movable only in the radial direction and that moves the locking member forward and backward in the radial direction.
- the lock / unlock device operating mechanism unlocks the lock / unlock device while the operation member is rotated from the neutral position to the first position.
- a holding cam for maintaining the lock / unlock device in an unlocked state while being rotated from the first position to the second position, and the lock / unlock device when the second position is exceeded.
- the contact portion of the rotating member is released from the holding cam, and the rotating member is returned to the lock position. Since the unlock cam is composed of a fixed unlock cam and a swing unlock cam, when the operating member returns to the neutral position, the contact portion of the rotating member returned to the lock position is the swing unlock cam.
- FIG. 1 is a cross-sectional view of the vehicle seat lifter device according to the first embodiment, taken along line AA. It is an exploded perspective view of the vehicular seat lifter device of a 1st embodiment.
- A) and (B) are a side view and a cross-sectional view taken along line BB of the vehicle seat lifter device according to the first embodiment as seen from the outside of the base frame.
- FIG. 6A and 6B are sectional views taken along the line CC of FIG. 6 showing the locked state and the unlocked state of the lock / unlock device of the vehicle seat lifter device according to the first embodiment viewed from the outside of the base frame. is there.
- FIG. 8 is an exploded perspective view of the lock / unlock device of FIG. 7.
- (A1) and (B1) are a plan view and a side view showing the first pole of the lock / unlock device of FIG. 7, and (A2) and (B2) show the second pole of the lock / unlock device of FIG. It is a top view and a side view. It is the side view which looked at the seat lifter device for vehicles of a 1st embodiment when the operation lever is located in the neutral position from the base frame outside.
- FIG. 17 is a side view of the vehicle seat lifter device according to the first embodiment viewed from the outside of the base frame when the operation lever is positioned further downward from the position of FIG. 16. It is the side view which looked at the seat lifter device for vehicles of a 1st embodiment when the operation lever has returned to the neutral position from the base frame outside.
- FIG. 1 shows a vehicle seat 10 equipped with a vehicle seat lifter device.
- the vehicle seat 10 includes a seat cushion 11 that forms a seating surface and a seatback 12 that forms a backrest surface. Yes.
- the vehicle seat 10 includes a seat lifter device 13 that adjusts the height of the seat cushion 11, a seat reclining device 14 that adjusts the inclination angle of the seat back 12, and a seat slide adjuster device that adjusts the longitudinal position of the seat cushion 11. 15 is provided.
- the height of the seat cushion 11 can be adjusted by operating an operation lever 17 as an operation member disposed on the side of the seat cushion 11.
- the inclination angle of the seat back 12 can be adjusted by operating the operation lever 18 that is disposed on the side of the seat cushion 11 and spaced apart from the operation lever 17.
- the front-rear direction position of the seat cushion 11 can be adjusted by operating the operation lever 19 disposed below the seat cushion 11.
- FIG. 2 shows a state in which the cushion portion of the seat cushion 11 and the cushion portion of the seat back 12 are removed from the vehicle seat 10, and the seat lifter device 13 is provided on the seat slide adjuster device 15.
- the seat slide adjuster device 15 includes a pair of left and right lower rails 21 fixed to a vehicle floor, and an upper rail 22 engaged with the lower rail 21 so as to be slidable in the vehicle front-rear direction.
- the upper rail 22 is illustrated at a predetermined front-rear direction position.
- the lock is held by an approximate lock mechanism.
- the seat lifter device 13 includes a pair of left and right base frames 23 that constitute a part of the seat cushion 11, and these base frames 23 are connected to a pair of left and right upper rails 22 so as to be movable up and down.
- a pair of left and right front link members 24 and a pair of left and right rear link members 25 are provided.
- the seat lifter device 13 includes a rotating device 30 that relatively rotates the base frame 23 and the rear link member 25, and a lock / unlock device 40 that locks and unlocks the relative rotation of the base frame 23 and the rear link member 25.
- the lower ends of the pair of left and right front link members 24 are pivotally attached to the front portions of the pair of upper rails 22 via hinge pins 26a (see FIGS. 2 and 5), respectively.
- the upper end sides of the pair of front link members 24 are pivotally attached to the front portions of the pair of base frames 23 via hinge pins 26b (see FIG. 5), respectively.
- each center part of a pair of front link member 24 is mutually connected by the connection rod 27 (refer FIG. 5).
- the lower ends of the pair of left and right rear link members 25 are pivotally attached to the rear portions of the pair of upper rails 22 via hinge pins 26c (see FIGS. 3 and 5), respectively.
- Both ends of a torque rod 28 made of a cylindrical pipe material are penetrated through the upper ends of the pair of rear link members 25, and both ends of the torque rod 28 are fastened to the pair of rear link members 25 by welding or the like. It is like that.
- One end of the torque rod 28 is rotatably supported by a lock / unlock device 40, and the other end of the torque rod 28 is rotatably supported in a bearing hole 23d (see FIG. 2) formed on the other side of the base frame 23. Is done. That is, as shown in FIGS. 4 and 5, the lock / unlock device 40 is disposed coaxially with the torque rod 28 on one end side of the torque rod 28, and the lock / unlock device 40 is connected to the torque rod 28. And one base frame 23 disposed on the operation lever 17 side.
- One rear link member 25 fixed to one end side of the torque rod 28 constitutes a drive side link member (hereinafter referred to as drive side rear link member 25) operated by the operation lever 17, and the other rear link.
- the member 25 constitutes a driven side link member that transmits torque via the torque rod 28.
- the above-described front and rear link members 24, 25, the base frame 23, and the upper rail 22 constitute a parallel link mechanism 20 (see FIG. 2), and the operation of the parallel link mechanism 20 causes the base frame 23 to move vertically. It is designed to move approximately in parallel.
- the rotating device 30 includes a sector gear 31 provided integrally with the drive-side rear link member 25, and a pinion gear 32 that meshes with the sector gear 31 and is rotatably supported by the base frame 23.
- a lift spring 33 as a base frame lifting and biasing means having one end engaged with the base frame 23 and the other end engaged with the pinion gear 32 so as to bias the base frame 23 in the direction of moving upward (see FIG. 4 and FIG. 5).
- the sector gear 31 is provided on the outer peripheral front side on the rotating end side of the driving side rear link member 25.
- the pinion gear 32 is rotatably fitted in a shaft hole 23 a (see FIGS. 4 and 5) drilled in the base frame 23 at one end side of the rotation shaft 32 a of the pinion gear 32 and meshed with the sector gear 31.
- the lift spring 33 is composed of a spiral spring wound clockwise from the inner peripheral side toward the outer peripheral side when viewed from the inside of the base frame 23.
- the outer peripheral end portion 33 a of the lift spring 33 is engaged with one end of an engaging pin 34 erected on the inner side surface of the base frame 23, and the inner peripheral end portion 33 b is pivoted on the other end side of the rotation shaft 32 a of the pinion gear 32. It is engaged with a slit 32b provided so as to extend in the direction.
- the locking / unlocking device 40 includes a disk-shaped first rotating member 41 and inner teeth 42a formed on the inner peripheral surface thereof, and is relatively rotatable with respect to the first rotating member 41.
- the disc-shaped second rotating member 42 and the first rotating member 41 are guided and supported by the first rotating member 41 so as to be movable in the radial direction.
- the first, second, and third poles 43A, 43B, and 43C as the three locking members formed on the circumference can be rotated between a predetermined lock position and a release position, and each of the poles 43A and 43B.
- the first rotating member 41 includes a circular concave portion 41b that is formed in a semi-cut shape and opens to the second rotating member 42 side, and has a through hole 41c in the center.
- the circular recess 41 b of the first rotating member 41 has an inner peripheral surface 41 d centering on the rotation axis O ⁇ b> 1 of the first rotating member 41 and the second rotating member 42.
- the second rotating member 42 includes a circular concave portion 42 b that is formed in a semi-cut shape and opens to the first rotating member 41 side, and has a through hole 42 c in the center. Yes.
- the circular recess 42b of the second rotating member 42 has an inner peripheral surface centered on the rotation axis O1 of the first rotating member 41 and the second rotating member 42, and the inner teeth 42a are formed on the entire peripheral surface. It is formed over.
- the first rotating member 41 is fitted on the inner peripheral surface 41d thereof so as to be slidable in the circumferential direction on the outer peripheral surface 42e of the second rotating member 42, whereby the first rotating member 41 41 and the second rotating member 42 are fitted so as to be rotatable relative to each other about the axis of the torque rod 28.
- the inner peripheral surface 41d of the first rotating member 41 and the outer peripheral surface 42e of the second rotating member 42 constitute a bearing portion 49, and the bearing portion 49 bears one end side of the torque rod 28 as will be described later. Doubles as As shown in FIG.
- each pole 43A is placed between two adjacent guide walls 41a.
- guide surfaces 41e for guiding both width portions so as to be slidable are formed in parallel with each other.
- a circular arc surface 41f centering on the rotation axis O1 is formed on the inner periphery of the guide wall 41a.
- the second rotating member 42 is formed on the first rotating member 41 by a bearing portion 49 configured by an inner peripheral surface 41 d of the first rotating member 41 and an outer peripheral surface 42 e of the second rotating member 42. On the other hand, it is fitted and supported so as to be relatively rotatable.
- a ring holder 50 made of a metal plate is fixed to the outer periphery of the first rotating member 41 by welding or the like.
- the ring holder 50 has a bent portion 50a bent at a substantially right angle toward the end surface of the second rotating member 42, and the first rotating member 41 and the second rotating member 42 are relatively rotated by the bent portion 50a. Is retained in the axial direction in a permitted state.
- the first, second, and third poles 43A, 43B, and 43C are made up of two kinds of poles arranged at equal angular intervals on the circumference in a plane orthogonal to the rotation axis O1. It has become.
- the first pole 43A is manufactured by forging a steel material or the like, and as illustrated in detail in FIGS. 9A1 and 9B1, the first block 61 and the second block 62 are formed to be stepped from each other in a side view.
- the first block 61 is disposed on the inner peripheral surface 42 d side of the second rotating member 42
- the second block 62 is disposed on the axial center side of the second rotating member 42. ing.
- both width end portions 43A1 of the first block 61 and the second block 62 coincide with each other and are formed to be parallel straight lines.
- Outer teeth 63 that can mesh with the inner teeth 42 a of the second rotating member 42 are formed on the outer ends of the first block 61 (end surfaces facing the inner teeth 42 a of the second rotating member 42).
- An inner surface cam portion 64 that engages with the outer periphery of the cam member 44 is formed at the inner end (the end surface opposite to the outer end).
- the second block 62 is provided with a pole-side groove cam portion 65 penetrating in the plate thickness direction at a substantially central portion in the width direction.
- the second pole 43B and the third pole 43C are manufactured by pressing a plate-shaped steel plate, and the second pole 43A of the first pole 43A is illustrated in detail in FIGS. 9A2 and 9B2.
- the block 62 is cut out to form a flat shape having no step similar to the shape constituted by only the first block 61. That is, the second and third poles 43B and 43C are shorter than the first pole 43A in the radial direction by the second block 62, and the plate thickness is made thinner by the plate thickness of the second block 62.
- both width end portions 43B1 are formed in parallel straight lines, like the first pole 43A.
- External teeth 66 that can mesh with the internal teeth 42a of the second rotating member 42 are formed at the outer ends of the second and third poles 43B and 43C.
- An inner surface cam portion 67 that engages with the outer periphery of the cam member 44 is formed on the second and third poles 43B and 43C.
- the second and third poles 43B and 43C are provided with an engaging protrusion 68 at the center in the width direction.
- the inner surface cam portion 64 formed at the step portion of the first pole 43A and the inner surface cam portion 67 formed at the inner end of the second pole 43B are formed in the same shape. That is, as shown in FIGS. 9A1 and 9A2, the inner surface cam portions 64 and 67 will be described later on the center portion in the circumferential direction and the both sides in the circumferential direction of the first and second poles 43A and 43B.
- Three pressing portions 76a, 76b, and 76c on which the cam surface 75 of the cam member 44 acts are provided.
- the pressing portion 76a provided at the center of the first and second poles 43A and 43B and the pressing portion 76b provided on the back side in the lock rotation direction of the cam member 44 are arranged in the lock rotation direction of the cam member 44 (see FIG. 7).
- the pressing portion 76c provided on the front side of the cam member 44 in the lock rotation direction is formed of a cam surface having an inclined surface that approaches the cam surface 75 of the cam member 44 in accordance with the counterclockwise rotation. It is comprised by the circular arc surface centering on the rotation center of 44.
- the third pole 43C is formed in substantially the same shape as the second pole 43B, but a wedge action portion 72 (see FIG. 7) described later is provided instead of the pressing portion 76c of the second pole 43B. The only difference is that
- the first, second, and third poles 43A, 43B, and 43C are guided by the guide surface 41e of the guide wall 41a formed in the circular recess 41b of the first rotating member 41, and the first rotating member 41 and the second rotating member.
- the outer teeth 63 and 66 are slidable in the radial direction of the member 42 so that the outer teeth 63 and 66 can be detachably engaged with the inner teeth 42a.
- the third pole 43C is formed with an inclined surface 71 (see FIG. 7) on one side of the cam member 44 on the front side in the rotational direction so as to face the guide surface 41e of the guide wall 41a.
- the inclined surface 71 has a linear shape in which the width continuously narrows as it goes radially outward from the guide wall 41a.
- the distance between the guide surface 41e of the guide wall 41a and the inclined surface 71 is gradually changed so as to decrease radially outward, and the center line between the guide surface 41e and the inclined surface 71 is a cam.
- the wedge action part 72 which goes to the rotation axis O1 of the member 44 is comprised.
- a wedge member 73 (see FIG. 7) made of a spherical member that contacts the guide surface 41e and the inclined surface 71 is disposed on the wedge action portion 72.
- the wedge member 73 is sandwiched in the axial direction of the cam member 44 between the end surface of the circular recess 41b of the first rotating member 41 and the peripheral edge of the release plate 45, and is in contact with the guide surface 41e and the inclined surface 71 while being in contact with the cam member. 44 can be moved in the radial direction.
- the wedge action portion 72 causes the second rotary member 42 to move against the guide wall 41 a provided on the first rotary member 41.
- the third poles 43C engaged with are moved relative to each other in a direction away from each other.
- the cam member 44 is rotatably disposed on the rotation axis O1 in the circular recess 42b of the second rotating member 42, and has a through hole 44a at the center. Further, the cam member 44 has three sets of cam surfaces 75 at equal circumferential intervals on the outer periphery thereof. Among them, the pair of cam surfaces 75 are disposed so as to be engageable with the pressing portions 76a, 76b, and 76c of the inner surface cam portion 64 of the first pole 43A.
- One set of the remaining two sets of cam surfaces 75 is disposed so as to be able to engage with each of the pressing portions 76a, 76b, and 76c of the inner surface cam portion 67 of the second pole 43B, and the other set is an inner surface of the third pole 43C.
- the cam portions 67 are arranged so as to be engageable with the pressing portions 76 a and 76 b and the wedge member 73, respectively.
- the cam surface 75 can press the portion close to the meshing portion between the outer teeth 63 and 66 of the first, second and third poles 43A, 43B and 43C and the inner teeth 42a of the second rotating member 42.
- the rotation of the second rotating member 42 relative to the first rotating member 41 can be reliably locked with a strong force.
- each cam surface 75 has three pressing cam portions 77a, 77b, and 77c that can contact the pressing portions 76a, 76b, and 76c of the first, second, and third poles 43A, 43B, and 43C. It is made up of.
- the pressing cam portion 77c that contacts the wedge member 73 functions as a wedge pressing cam portion.
- the three pressing cam portions 77a, 77b, and 77c are respectively connected to the pressing portions 76a, 76b, and 76c of the inner surface cam portions 64 and 67 of the first and second poles 43A and 43B when the cam member 44 is rotated to the locked position.
- the third pole 43C is held at an angular position where it comes into contact with the pressing portions 76a and 76b of the inner surface cam portion 67 and the wedge member 73, respectively.
- the pressing cam portions 77a, 77b, 77c are separated from the pressing portions 76a, 76b, 76c and the wedge member 73, and the pressing cam portion (wedge)
- the pressing cam portion 77c is held at an angular position that engages with the arc surface 41f of the guide wall 41a.
- a plurality of engaging projections 78 project from the side surface of the cam member 44 at equal angular intervals on the circumference, and a pole-side groove cam portion 65 formed on the first pole 43A is formed on one of the engaging projections 78. Is engaged.
- the pole-side groove cam portion 65 and the engagement protrusion 78 act so as to move the first pole 43A radially inward by the rotation of the cam member 44 in the unlocking rotation direction.
- the release plate 45 has a thin plate shape and has a through hole 45 a at the center, and is integrally engaged with an engagement protrusion 78 on the side surface of the cam member 44. Installed.
- the release plate 45 is attached to the cam member 44 so as to coincide with the second block 62 of the first pole 43A in the axial direction, and is in slidable contact with the end face of the second pole 43B.
- the second and third poles 43B and 43C and the release plate 45 can be accommodated within the thickness range of the first pole 43A.
- the release plate 45 is formed of a substantially annular plate, and a fan-shaped notch 45b is formed in one part of the annular plate, and the first pole 43A is disposed in the part of the notch 45b. That is, the annular plate is cut out in a fan shape by an angular range corresponding to the first pole 43A, so that the release plate 45 does not interfere with the first pole 43A due to the rotation of the cam member 44.
- Two release plate side groove cam portions 79 are formed on the circumference around the rotation center of the release plate 45 so as to penetrate in the thickness direction. These release plate side groove cam portions 79 are disposed radially outward from the circumferential position of the engagement protrusion 78 so as to correspond to the end surfaces of the second and third poles 43B and 43C, respectively.
- the release plate side groove cam portion 79 is engaged with engagement protrusions 68 protruding from the second and third poles 43B and 43C, respectively.
- the lock spring 46 is composed of a spiral spring that is wound counterclockwise from the inner peripheral side toward the outer peripheral side when viewed from the second rotating member 42 side.
- the outer end 46 a of the lock spring 46 is locked in the cut groove 41 g of the first rotating member 41, and the inner end 46 b is locked in the cut groove (not shown) of the cam member 44.
- the lock spring 46 urges the cam member 44 in a direction to rotate it counterclockwise as viewed from the second rotating member 42 side. That is, the lock spring 46 urges the cam member 44 to rotate toward the lock position.
- the poles 43A, 43B, and 43C are urged by the lock spring 46 in a direction that maintains the engagement position of the second rotating member 42 with respect to the internal teeth 42a.
- the rotating member 47 includes a hinge shaft 47a, an arm 47b having one end fixed in a direction perpendicular to one end of the hinge shaft 47a, and the other end of the arm 47b parallel to the hinge shaft 47a. And an abutting portion 47c projecting from the surface.
- the hinge shaft 47a is disposed on the rotation axis O1 of the first rotating member 41, the cam member 44, and the second rotating member 42, and is formed at the center of rotation of the first rotating member 41, the cam member 44, and the second rotating member 42.
- the through holes 41c, 44a, and 42c that have been made are rotatably passed.
- a two-chamfered two-chamfered portion is formed at a substantially central portion of the hinge shaft 47a in the axial direction, and the through hole 44a of the cam member 44 through which the hinge shaft 47a passes fits into the two-chamfered portion of the hinge shaft 47a. In this way, the hinge shaft 47a and the cam member 44 can be rotated integrally.
- the through hole 44a of the cam member 44 is formed slightly larger than the two chamfered portions of the hinge shaft 47a, and a radial play is provided between the two.
- the cam member 44 is slightly movable in the radial direction with respect to the hinge shaft 47a within the circular recess 41b of the first rotating member 41, and the poles 43A, 43B, 43C are moved to the second rotating member 42.
- the cam member 44 can be automatically aligned so that the external teeth 63, 66 of the poles 43A, 43B, 43C are evenly applied to the inner teeth 42a of the second rotating member 42. Can be engaged with. As shown in FIG.
- the arm 47 b is disposed so as to face obliquely upward and forward, and the contact portion 47 c is in contact with a lock / unlock device operating mechanism 80 provided on the operation lever 17.
- the contact portion 47c is pushed and the arm 47b is rotated counterclockwise, the lock of the poles 43A, 43B, and 43C by the cam member 44 is released.
- the lock / unlock device 40 having the above-described configuration is disposed coaxially with the torque rod 28 between one base frame 23 and one end of the torque rod 28.
- the lock / unlock device 40 is arranged such that the first rotating member 41 faces the base frame 23 side and the second rotating member 42 faces the torque rod 28 side, and the first rotating member 41 will be described later.
- the second rotating member 42 is fixed to the drive side rear link member 25 and the torque rod 28 as will be described later.
- the first rotating member 41 of the lock / unlock device 40 is locked in a locking hole 23b formed in the side surface of one base frame 23, and is integrally fastened by welding or the like. At this time, the first rotating member 41 is locked to the locking hole 23b of the base frame 23 so as to be able to float in the radial direction so that the mounting position of the lock / unlock device 40 with respect to the base frame 23 can be adjusted. Thereby, the misalignment between the bearing portion 49 of the lock / unlock device 40 and the bearing hole 23d of the base frame 23 can be absorbed between the first rotating member 41 and the one base frame 23.
- the second rotating member 42 of the locking / unlocking device 40 has a plurality of (for example, four) engaging protrusions on the surface opposite to the first rotating member 41 side with a constant spacing in the circumferential direction. 42 g is formed.
- the drive-side rear link member 25 has an insertion hole 25a into which one end of the torque rod 28 can be inserted, and a plurality of (for example, four) engagement holes 25b that engage with the engagement protrusions 42g around the insertion hole 25a. Is formed.
- the driven-side rear link member 25 has an insertion hole (not shown) into which the other end of the torque rod 28 can be inserted.
- the drive-side rear link member 25 is integrally fastened to the second rotating member 42 by welding or the like with the engagement hole 25b engaged with the engagement protrusion 42g.
- One end of the torque rod 28 is inserted into the insertion hole 25a of the driving-side rear link member 25 that is integrally fastened to the second rotating member 42 by welding or the like, and is fastened integrally by welding or the like.
- the operation lever 17 is rotatably supported by the base frame 23 and is held at the neutral position. That is, one end side of the rotation shaft 32a of the pinion gear 32 penetrating the shaft hole 23a formed in the base frame 23 is rotatably fitted in the shaft hole 17a formed in one end side of the operation lever 17. Yes.
- the operation lever 17 has a torsion coil spring 60 that is biased so as to be held at a substantially horizontal neutral position (lever operation angle 0 degree) with the operation end side of the operation lever 17 facing forward, coaxial with the shaft hole 17a. Is arranged.
- Both end portions 60a and 60b of the torsion coil spring 60 are erected on both side surfaces of the engaging portion 17b (see FIG. 6) erected on the outer surface of the operation lever 17 and on the outer surface of the base frame 23.
- the operation lever 17 is held in the neutral position by sandwiching both side surfaces of the joint portion 23c (see FIG. 6).
- the torsion coil spring 60 can be omitted.
- a holding means for holding the operation lever 17 in the neutral position is provided so that the occupant can manually return the lever from the upper position or the lower position to the neutral position.
- a support shaft 17c (see FIG. 5) is provided in the vicinity of the shaft hole 17a on the inner surface of the operation lever 17 so as to rotatably support a feed claw 92 described later.
- the lock / unlock device operating mechanism 80 is a rotating end of the operating lever 17 as a cam that can contact the contact portion 47 c of the rotating member 47 of the lock / unlock device 40. It protrudes radially on the rear outer periphery of the side. That is, the lock / unlock device operating mechanism 80 rotates the rotation member 47 of the lock / unlock device 40 according to the rotation of the operation lever 17 to lock and unlock the lock / unlock device 40.
- the first unlock cam 81, the holding cam 82, and the second unlock cam 83 are provided.
- the first unlock cam 81 includes a fixed unlock cam 84 that is provided integrally with the operation lever 17 and a rocker that is supported by the operation lever 17 so as to be swingable and is urged so as to contact the fixed unlock cam 84. It consists of a moving unlock cam 85.
- the fixed unlock cam 84 and the holding cam 82 are configured by one member.
- the fixed unlock cam 84 is rotated while the operation lever 17 is rotated from the neutral position (lever operation angle 0 degree) shown in FIG. 10 to the first position (for example, lever operation angle +10 degrees) shown in FIG.
- This is a cam that pushes the contact portion 47c of the rotating member 47 and rotates it to the unlocked position so that the lock / unlock device 40 is unlocked.
- the swing unlock cam 85 is supported at one end side so as to be swingable to the operation lever 17 by a pin 85a, and is urged so as to come into contact with the fixed unlock cam 84 by a torsion coil spring 85b fitted into the pin 85a. .
- the swing unlock cam 85 is in contact with the rotating member 47 while the operation lever 17 is rotated from the position shown in FIG. 16 to the neutral position shown in FIG. 18 through the position shown in FIG.
- This cam is separated from the fixed unlock cam 84 by being swung by being pressed by the portion 47c, and is passed through the contact portion 47c to face the swing unlock cam 85 portion of the first unlock cam 81 at the initial position. is there.
- the swing unlock cam 85 is swung by the urging force of the torsion coil spring 85b after the contact portion 47c of the rotating member 47 has passed through the separated portion, and is again in contact with the fixed unlock cam 84 and has passed. Opposing to the contact portion 47c.
- the facing position is the initial position of the contact portion 47c
- the contact portion 47c of the rotating member 47 is pushed and rotated to the unlock position so that the lock / unlock device 40 is unlocked.
- the rocking unlock cam 85 and the fixed unlock cam 84 are functioning.
- the holding cam 82 keeps the lock / unlock device 40 in the unlocked state while the operating lever 17 is rotated from the first position to the second position shown in FIG. 14 in the upward direction (for example, lever operating angle +30 degrees).
- This cam is in contact with the contact portion 47c so as to be maintained, and holds the rotating member 47 in the unlock position.
- the second unlock cam 83 is configured so that the lock / unlock device 40 is unlocked while the operation lever 17 is rotated from the neutral position to the third position shown in FIG. 19 in the downward direction (for example, lever operation angle ⁇ 10 degrees). It is a cam which pushes the contact part 47c of the rotation member 47 so as to be locked and rotates it to the unlock position.
- the rotating device driving mechanism 90 includes a pinion wheel 91 that is integrally provided coaxially with the pinion gear 32, and is rotatably supported by the operating lever 17 so that the operating lever 17 is unidirectionally moved.
- the pinion gear 32 is rotationally driven by being engaged with the claw wheel 91, and when the operation lever 17 is rotated in the other direction, the feed claw 92 is disengaged from the hook wheel 91, and the base frame. 23 and a release member 93 that comes into contact with the feed claw 92 and separates the feed claw 92 from the claw wheel 91 while the operation lever 17 is rotated from the neutral position to the third position.
- the toothed wheel 91 is formed with teeth 91a having a predetermined pitch angle.
- the pitch angle of the internal teeth 42a formed on the second rotation member 42 of the lock / unlock device 40 is C
- the ratio of the rotation speed of the sector gear 31 to the rotation speed of the pinion gear 32 of the rotation device 30 is A
- the claw wheel is B
- C A
- the shaft hole 92a drilled on the rotation end side of the feed claw 92 has one end side of the support shaft 17c projecting from the operation lever 17 so as to penetrate the long hole 23e drilled in the base frame 23. It is inserted so that it can rotate.
- a torsion coil spring 94 is inserted into one end side of the support shaft 17c.
- the torsion coil spring 94 biases the claw 92b on the tip end side of the feed claw 92 in a direction to engage with the teeth 91a of the claw wheel 91.
- One end portion 94a of the torsion coil spring 94 is engaged with a groove 92c formed on the outer peripheral surface of the feed claw 92, and the other end portion 94b is provided on one end side of the support shaft 17c so as to extend in the axial direction. Is engaged with the slit 17d.
- the separating member 93 is erected on the inner surface of the operation lever 17 so as to be able to contact the inner peripheral surface of the feed claw 92 as the operation lever 17 rotates downward.
- the raising operation of the seat cushion 11 will be described with reference to FIGS. 10 to 18, and the lowering operation of the seat cushion 11 will be described with reference to FIGS.
- the amount by which the seat cushion 11 is raised or lowered is the first locking surface of the notch 25c provided on the rotation end side of the drive-side rear link member 25.
- 25 c 1 or the second locking surface 25 c 2 is regulated by locking with the engaging protrusion 23 f erected on the inner surface of the base frame 23.
- the operation lever 17 is located at the neutral position (lever operation angle 0 degree), and the claw 92b of the feed claw 92 of the rotating device drive mechanism 90 is, for example, “ It is in contact with a portion separated from the tooth 91a marked 1 "(the back portion of the tooth 91a marked” 2 "in the figure). That is, the rotating device drive mechanism 90 does not act on the rotating device 30 at all.
- the contact portion 47c of the rotation member 47 of the lock / unlock device 40 is opposed to the starting point (the swing unlock cam 85) of the first unlock cam 81 of the lock / unlock device operating mechanism 80 at the initial position.
- the external teeth 63, 66 formed on the respective poles 43A, 43B, 43C of the lock / unlock device 40 for example, the external teeth 66 of the second pole 43B indicated as "A", “B", “C” in the figure, ,
- the 2nd rotation member 42 with respect to the 1st rotation member 41 is locked. Therefore, since the rotation of the driving side rear link member 25 is restricted, the seat cushion 11 is fixed at a predetermined height position.
- the cam member 44 and the release plate 45 of the lock / unlock device 40 are integrally rotated counterclockwise, and the first, second, and third poles 43A, 43B, and 43C are rotated.
- the pressing cam portions 77a, 77b, 77c of the cam surface 75 are disengaged from the pressing portions 76a, 76b, 76c.
- Due to the engaging action of the pole-side groove cam portion 65 of the first pole 43A and the engaging projection 78 of the cam 44 the first pole 43A is drawn toward the rotation axis O1 along the guide surface 41e of the guide wall 41a, The meshing between the external teeth 63 of the pole 43A and the internal teeth 42a of the second rotating member 42 is released.
- the second and third poles 43B and 43C are engaged with the guide surface of the guide wall 41a by the engaging action of the engaging projections 68 of the second and third poles 43B and 43C and the release plate side groove cam portion 79 of the release plate 45.
- 41e is pulled toward the rotation axis O1 side, and the engagement between the external teeth 66 of the second and third poles 43B and 43C and the internal teeth 42a of the second rotating member 42 is released.
- rock of the 2nd rotation member 42 with respect to the 1st rotation member 41 is cancelled
- the cam 44 is aligned by the inner peripheral surface 41f of the guide wall 41a.
- the gaps between the outer teeth 63 and 66 of the first, second and third poles 43A, 43B and 43C and the inner teeth 42a of the second rotating member 42 are substantially equal, and some of the poles 43A, 43B and 43C It is possible to eliminate the occurrence of rotation failure and abnormal noise caused by the tooth tips of the external teeth 63 and 66 interfering with the tooth tips of the internal teeth 42a of the second rotating member 42.
- the outer teeth 66 of the second pole 43B marked as “B” are positioned at positions where they can mesh with the inner teeth 42a marked “B” and “C” formed in the second rotating member 42 in this order.
- the contact portion 47c of the rotation member 47 of the lock / unlock device 40 is released from the holding cam 82 of the lock / unlock device operating mechanism 80, and the rotation member 47 of the lock / unlock device 40 is locked.
- the spring 46 is rotated clockwise by the urging force of the spring 46.
- the cam member 44 is rotated by the rotation of the rotating member 47, and the first, second, and third poles 43A, 43B, and 43C are moved along the guide surface 41e by the pressing cam portions 77a, 77b, and 77c of the cam member 44.
- the outer teeth 63 and 66 formed on the first, second and third poles 43A, 43B and 43C are engaged with the inner teeth 42a formed on the second rotating member 42.
- the rotation of the second rotation member 42 relative to the first rotation member 41 is locked, the rotation of the drive-side rear link member 25 is restricted, and the seat cushion 11 is fixed at a position higher than the initial state by a predetermined height. Is done.
- the operation lever 17 is operated from the neutral position to the third position downward (for example, the lever operation angle ⁇ 10 degrees) against the urging force of the torsion coil spring 60. Then, during the operation, the feed claw 92 of the rotation device drive mechanism 90 is moved downward together with the operation lever 17 without being engaged with the teeth 91 a of the claw wheel 91 and is brought into contact with the separation member 93. It is rotated clockwise against the biasing force of the torsion coil spring 94. Thereby, the claw 92b of the feed claw 92 is separated from the back surface portion of the tooth 91a of the claw wheel 91 in the radial direction.
- the feed claw 92 of the rotation device drive mechanism 90 is moved downward together with the operation lever 17 without being engaged with the teeth 91 a of the claw wheel 91 and is brought into contact with the separation member 93. It is rotated clockwise against the biasing force of the torsion coil spring 94. Thereby, the claw 92b of the feed claw 92 is separated from the back surface portion of the
- the operation lever 17 With the seat cushion 11 adjusted to an appropriate height position, the operation lever 17 is released, and the operation lever 17 is rotated and returned from the position shown in FIG. Then, the feeding claw 92 of the rotating device driving mechanism 90 is moved upward together with the operation lever 17 and is rotated counterclockwise by the biasing force of the torsion coil spring 94. Accordingly, as shown in FIG. 10, the claw 92 b of the feed claw 92 is brought into contact with the back surface portion of the tooth 91 a of the claw wheel 91.
- the rotating member 47 of the locking / unlocking device 40 causes the contact portion 47c of the rotating member 47 to be the starting point of the second unlocking cam 83 of the locking / unlocking device operating mechanism 80 by the urging force of the lock spring 46 ( It is rotated clockwise until it comes into contact with the first unlock cam 81 (start point).
- the rotation of the second rotation member 42 relative to the first rotation member 41 is locked by the same operation as the operation described with reference to FIGS.
- the rotation of the link member 25 is restricted, and the seat cushion 11 is fixed at a position lower than the initial state by a predetermined height.
- the lowering operation of the seat cushion 11 is completed.
- the passenger sitting on the seat cushion 11 operates the operation lever 17 downward while sitting on the seat cushion 11, thereby lowering the seat cushion 11 while maintaining the horizontal state by the action of the parallel link mechanism 20.
- the height can be adjusted in the direction.
- FIGS. 20 and 21 show a second embodiment of the present invention.
- the locking / unlocking device operating mechanism 80 of the second embodiment has the same functions as the first unlocking cam 81 and the holding cam 82 of the locking / unlocking device operating mechanism 80 of the first embodiment.
- a 1-unlock cam 81 and a holding cam 82 are provided facing each other. That is, instead of the second unlock cam 83 of the first embodiment, a first unlock cam 81 and a holding cam 82 are provided.
- the rotating device driving mechanism 90 of the second embodiment is replaced with an engaging gear 95 having a configuration different from those of the claw wheel 91 and the feeding claw 92 of the rotating device driving mechanism 90 of the first embodiment.
- a pair of engaging members 96, 97 are provided.
- the engaging gear 95 is coaxial with the pinion gear 32, that is, is provided integrally with the rotating shaft 32a.
- the engagement gear 95 is formed with triangular teeth 95a.
- the pair of engaging members 96 and 97 are rotatably supported at the center by the rotary shaft 98 so that the other end side is separated when the one end side approaches.
- the rotating shaft 98 is disposed in parallel with the rotating shaft 32a of the engaging gear 95, and is fixedly supported by a connecting member 99 that is rotatably supported on the rotating shaft 32a.
- a plurality of engagement teeth 96a and 97a that can mesh with the triangular teeth 95a of the engagement gear 95 are opposed to one end side of the pair of engagement members 96 and 97 from the engagement gear 95 at a predetermined interval in the radial direction. It is formed to do. Both ends of the coil spring 100 are engaged with the other ends of the pair of engaging members 96 and 97, respectively. Between the other end sides of the pair of engagement members 96, 97, an engagement operation member 101 that rotates the engagement members 96, 97 as the operation lever 17 rotates is provided. The engagement actuating member 101 protrudes from the operation lever 17 so as to penetrate the elongated hole 23e of the base frame 23.
- the operation lever 17 in the initial state shown in FIG. 20, the operation lever 17 is positioned at the neutral position, and the engaging members 96 and 97 of the rotating device driving mechanism 90 are rotated clockwise by the biasing force of the coil spring 100.
- the engagement teeth 96 a and 97 a are spaced apart from the triangular tooth 95 a of the engagement gear 95. That is, the rotating device drive mechanism 90 does not act on the rotating device 30 at all.
- the operation lever 17 is rotated upward, the other end side of the upper engagement member 96 is pushed up by the engagement operation member 101.
- the frictional resistance between the rotating shaft 32 a of the engaging gear 95 and the connecting member 99 is set to be larger than the frictional resistance between the engaging member 96 and the rotating shaft 98.
- the connecting member 99 does not rotate around the rotation shaft 32 a of the engagement gear 95, and only the engagement member 96 rotates counterclockwise around the rotation shaft 98. Since the engaging teeth 96a are spaced apart from the triangular teeth 95a, there is a time lag until the engaging teeth 96a are engaged with the triangular teeth 95a. During this time lag, the lock / unlock device 40 is unlocked. Locked. The engagement teeth 96a of the engagement member 96 are engaged with the triangular teeth 95a of the engagement gear 95, and the engagement gear 95 is pushed by the engagement member 96 and rotated counterclockwise. The device 30 and the lock / unlock device 40 operate in the same manner as described in the first embodiment, and can finally raise the seat cushion 11.
- the lock / unlock device operating mechanism 80 includes a first unlock cam 81 (a fixed unlock cam 84 and a swinging unlock cam 85) instead of the second unlock cam 83 of the first embodiment, and Since the holding cam 82 is provided, the rotating device 30 and the lock / unlock device 40 operate in the same manner as when the operation lever 17 is rotated upward. And finally, the seat cushion 11 can be lowered.
- the lock / unlock device 40 is operated by the operation of the lock / unlock device operating mechanism 80 interlocked with the upward rotation of the operation lever 17.
- the first, second and third poles 43A, 43B, 43C supported movably on the first rotating member 41 fixed to the side are connected to the second rotating member 42 fixed to the driving side rear link member 25 side.
- an engagement / disengagement mechanism 48 is provided that locks the relative rotation between the first rotation member 41 and the second rotation member 42 or locks the relative rotation. Yes. Therefore, the seat lifter device 13 firmly holds the lift position of the vehicle seat 10 even when an external force applied to the vehicle seat 10 is applied to the engagement / disengagement mechanism 48 via the driving-side rear link member 25 in a vehicle collision. Can do.
- the rotating device 30 has a function of relatively rotating the base frame 23 and the driving-side rear link member 25.
- the rotating device 30 and the lock / unlock device 40 include the rotating device drive mechanism 90 and the locking device. It is configured to be operable by the operation lever 17 via the unlock device operating mechanism 80. Therefore, it is not necessary to reciprocate the operation lever many times as in the prior art, and the lift adjustment of the vehicle seat 10 can be easily performed.
- the rotation device drive mechanism 90 places the rotation device 30 in a free rotation state while the operation lever 17 rotates from the neutral position to the third position downward, so that the drive-side rear link member 25 is moved to the base frame 23.
- the lift adjustment of the vehicle seat 10 can be performed quickly by freely rotating relative to the vehicle.
- the lock / unlock device 40 is supported such that the first, second, and third poles 43A, 43B, and 43C are movable only in the radial direction.
- a first rotating member 41 rotatably supported by a cam member 44 for advancing and retracting the first, second and third poles 43A, 43B and 43C in the radial direction, and the first, second and third poles 43A, 43B, 43C has external teeth 63, 66 formed at the front ends thereof and a second rotating member 42 in which internal teeth 42a to be engaged and disengaged are formed. Therefore, the cam member 44 is rotated by the rotating member 47.
- the outer teeth 63 and 66 of the first, second and third poles 43A, 43B and 43C can be engaged with and disengaged from the inner teeth 42a of the second rotating member 42, and the lift adjustment of the vehicle seat 10 can be performed. Easy configuration It can be carried out by.
- the lock / unlock device actuating mechanism 80 has the lock / unlock device 40 while the operation lever 17 is rotated from the neutral position to the first position. And the holding cam 82 for maintaining the lock / unlock device 40 in the unlocked state while being rotated from the first position to the second position. If it exceeds, the contact part 47c of the rotation member 47 of the lock / unlock device 40 is released from the holding cam 82, and the rotation member 47 is returned to the lock position. Since the unlock cam 81 includes a fixed unlock cam 84 and a swing unlock cam 85, when the operating lever 17 returns to the neutral position, the contact portion 47c of the rotating member 47 that has returned to the lock position.
- the operation mechanism 80 can be configured simply.
- the rotation device 30 is configured by a gear mechanism
- the rotation device drive mechanism 90 is configured by a ratchet mechanism, so that the pitch angle of the gear or ratchet is adjusted.
- the relative rotation angle between the base frame 23 and the drive side rear link member 25, that is, the lift adjustment amount of the vehicle seat 10 can be arbitrarily adjusted.
- the lock / unlock device 40 is unlocked to lower the base frame. After the state, the vehicle seat 10 can be lowered with the weight of the occupant and adjusted to an arbitrary height, and the operability of the seat lifter device 13 can be improved.
- the pitch angle C of the internal teeth 42a of the lock / unlock device 40 is determined by the ratio A of the rotational speed of the sector gear 31 to the rotational speed of the pinion gear 32 and Since the pitch angle B is a product of the pitch angle B, the lock / unlock device 40 is surely locked every time the operation lever 17 is rotated by one pitch angle. Can do.
- the vehicle seat lifter according to the present invention adjusts the height of the vehicle seat cushion, and is suitable when smooth height adjustment of the vehicle seat cushion is required.
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Abstract
Description
Claims (8)
- シートクッションを支持する左右一対のベースフレームと、
該左右一対のベースフレームの後部にそれぞれ一端を枢着された左右一対の後方リンク部材と、
該左右一対の後方リンク部材をトルク伝達可能に連結するトルクロッドと、
前記左右一対のベースフレームの前部にそれぞれ一端を枢着され、前記後方リンク部材とによって平行リンク機構を構成する左右一対の前方リンク部材と、
前記ベースフレームと前記後方リンク部材とを相対回転させる回転装置と、
前記ベースフレーム側に固定された第1回転部材に移動可能に支承された係止部材を前記後方リンク部材側に固定された第2回転部材に係脱させる係脱機構と、前記ベースフレーム側に回動可能に支承され前記係脱機構を係脱操作する回動部材とを備え、前記係止部材が前記第2回転部材に係合して前記第1回転部材と前記第2回転部材との相対回転を拘束するロック状態又は前記係止部材が前記第2回転部材から離脱して前記相対回転を許容するアンロック状態となるロック・アンロック装置と、
前記ベースフレームに回動可能に支承され中立位置に保持される操作部材と、
を備える車両用シートリフター装置。 - 請求項1において、
前記操作部材の前記中立位置から一方向への回動に連動して前記ロック・アンロック装置の前記回動部材を回動させ、前記操作部材が前記中立位置から第1位置まで回動される間に前記ロック・アンロック装置を前記アンロック状態とし、前記第1位置から第2位置まで回動される間は前記ロック・アンロック装置を前記アンロック状態に維持し、前記第2位置を越えると前記ロック・アンロック装置を前記ロック状態に復帰可能とするとともに、前記操作部材を前記中立位置に復帰可能とし、前記操作部材の前記中立位置から他方向への回動に連動して前記ロック・アンロック装置の前記回動部材を回動させ、前記操作部材が前記中立位置から第3位置まで回動される間に前記ロック・アンロック装置を前記アンロック状態とし、前記第3位置から前記中立位置に復帰されると前記ロック・アンロック装置を前記ロック状態に復帰可能とするロック・アンロック装置作動機構を備える車両用シートリフター装置。 - 請求項2において、
前記操作部材の前記中立位置から前記一方向への回動に連動して作動され、前記操作部材が前記中立位置から前記第1位置まで回動される間は遊動し、前記第1位置から前記第2位置まで回動される間は前記回転装置を駆動して前記シートクッションが上昇する方向に前記後方リンク部材を前記ベースフレームに対して回動させ、前記中立位置に復帰する間は遊動し、前記操作部材の前記中立位置から前記他方向への回動に連動して作動され、前記操作部材が前記中立位置から前記第3位置まで回動される間に前記回転装置を自由回転状態として前記後方リンク部材が前記ベースフレームに対して自由に相対回転可能とする回転装置駆動機構を備える車両用シートリフター装置。 - 請求項3において、
前記回転装置は、前記後方リンク部材に一体的に設けられたセクタギヤと、前記セクタギヤと噛合し前記ベースフレームに回転可能に支承されたピニオンギヤとを備え、
前記回転装置駆動機構は、前記ピニオンギヤと同軸に一体的に設けられた爪車と、前記操作部材に回動可能に支承され前記操作部材が前記一方向に回動されるときは前記爪車と係合して前記ピニオンギヤを回転駆動し、前記操作部材が前記他方向に回動されるときは前記爪車と非係合となる送り爪と、前記ベースフレームに固定され前記操作部材が前記中立位置から前記第3位置まで回動される間に前記送り爪と当接して前記送り爪を前記爪車から離脱させる開離部材とを備えている車両用シートリフター装置。 - 請求項4において、
一端が前記ベースフレームに係合され、前記ベースフレームを上方に移動させる方向に付勢するように他端が前記回転装置のピニオンギヤに係合されたベースフレーム上昇付勢手段を備えている車両用シートリフター装置。 - 請求項4又は5において、
前記ロック・アンロック装置の前記内歯のピッチ角をC、前記ピニオンギヤの回転数に対する前記セクタギヤの回転数の比をA、前記爪車のピッチ角をBとしたとき、C=A×Bとなるように構成されている車両用シートリフター装置。 - 請求項2から6の何れか一項において、
前記ベースフレーム側に固定された前記第1回転部材に前記第2回転部材が軸受部を介して前記トルクロッドの軸心を中心にして相対回転可能に嵌合され、
前記第1回転部材には、前記係止部材が半径方向にのみ移動可能に支承されるとともに、前記係止部材を半径方向に進退させるカム部材が回転可能に支承され、
前記第2回転部材には、前記係止部材の先端に形成された外歯と係脱する内歯が形成され、
前記カム部材が前記回動部材によって回動されることによって前記係止部材が半径方向に移動され、前記外歯が前記内歯に噛合又は離脱することにより前記ロック・アンロック装置がロック状態又は前記アンロック状態となる車両用シートリフター装置。 - 請求項7において、
前記ロック・アンロック装置作動機構は、
前記操作部材が前記中立位置から第1位置まで回動される間に前記ロック・アンロック装置が前記アンロック状態となるように前記回動部材の端部に設けられた当接部を押動して該回動部材をアンロック位置に回動させるアンロックカムと、前記操作部材が前記第1位置から前記第2位置まで回動される間は前記ロック・アンロック装置が前記アンロック状態に維持されるように前記当接部と当接して前記回動部材をアンロック位置に保持する保持カムとが前記操作部材に設けられ、
前記操作部材が前記第2位置を越えると、前記ロック・アンロック装置が前記ロック状態に復帰するように前記回動部材の前記当接部が前記保持カムから解放されて前記回動部材がロック位置に回動され、
前記アンロックカムは、前記操作部材に一体的に設けられた固定アンロックカムと、前記操作部材に揺動可能に支承され前記固定アンロックカムと当接するように付勢された揺動アンロックカムとで構成され、
前記操作部材が前記中立位置に復帰するとき、前記ロック位置に回動された前記回動部材の前記当接部が前記揺動アンロックカムを揺動させて前記固定アンロックカムと前記揺動アンロックカムとの間を通過し前記揺動アンロックカムと初期位置で対向する車両用シートリフター装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP11774734.5A EP2565072B1 (en) | 2010-04-28 | 2011-03-23 | Vehicle seat lifter device |
US13/640,619 US8585148B2 (en) | 2010-04-28 | 2011-03-23 | Vehicle seat lifter device |
JP2012512730A JP5141850B2 (ja) | 2010-04-28 | 2011-03-23 | 車両用シートリフター装置 |
CN2011900004337U CN203063716U (zh) | 2010-04-28 | 2011-03-23 | 车辆用座椅升降装置 |
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JP2010103217 | 2010-04-28 | ||
JP2010-103217 | 2010-04-28 |
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WO2011135950A1 true WO2011135950A1 (ja) | 2011-11-03 |
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PCT/JP2011/056893 WO2011135950A1 (ja) | 2010-04-28 | 2011-03-23 | 車両用シートリフター装置 |
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US (1) | US8585148B2 (ja) |
EP (1) | EP2565072B1 (ja) |
JP (1) | JP5141850B2 (ja) |
CN (1) | CN203063716U (ja) |
WO (1) | WO2011135950A1 (ja) |
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JP6167792B2 (ja) | 2013-09-19 | 2017-07-26 | アイシン精機株式会社 | 車両用シートリフター装置 |
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US10195962B2 (en) | 2016-07-14 | 2019-02-05 | Bae Industries, Inc. | Power seat assembly with spring loaded seatback dump and motor driven design rewind and reset functionality |
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CN107415784B (zh) * | 2017-05-11 | 2023-11-07 | 汕头市瑞祥模具有限公司 | 一种汽车扶手位置转动调节装置 |
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US20130026806A1 (en) | 2013-01-31 |
EP2565072A4 (en) | 2013-06-19 |
JPWO2011135950A1 (ja) | 2013-07-18 |
EP2565072A1 (en) | 2013-03-06 |
US8585148B2 (en) | 2013-11-19 |
EP2565072B1 (en) | 2015-06-03 |
CN203063716U (zh) | 2013-07-17 |
JP5141850B2 (ja) | 2013-02-13 |
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