WO2012117772A1 - Dispositif d'inclinaison - Google Patents

Dispositif d'inclinaison Download PDF

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Publication number
WO2012117772A1
WO2012117772A1 PCT/JP2012/051542 JP2012051542W WO2012117772A1 WO 2012117772 A1 WO2012117772 A1 WO 2012117772A1 JP 2012051542 W JP2012051542 W JP 2012051542W WO 2012117772 A1 WO2012117772 A1 WO 2012117772A1
Authority
WO
WIPO (PCT)
Prior art keywords
pole
teeth
cam
external teeth
poles
Prior art date
Application number
PCT/JP2012/051542
Other languages
English (en)
Japanese (ja)
Inventor
藤岡　秀彦
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
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 WO2012117772A1 publication Critical patent/WO2012117772A1/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
    • B60N2/235—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 by gear-pawl type mechanisms
    • B60N2/2356—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 by gear-pawl type mechanisms with internal pawls
    • B60N2/236—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 by gear-pawl type mechanisms with internal pawls linearly movable

Definitions

  • the present invention relates to a reclining device that permits / prohibits tilting of a seat back with respect to a seat cushion.
  • FIGS. 7 is a structural view of the seat
  • FIG. 8 is an exploded perspective view of a conventional reclining device
  • FIG. 9 is the reclining device shown in FIG. 8 as viewed in the direction of arrow A with the second member, shaft, and spring assembled.
  • the seat 1 includes a seat cushion 2 that supports a seated person's buttocks, and a seatback 3 that is provided so as to be tiltable in the front-rear direction with respect to the seat cushion 2 and supports the back of the seated person. It has become.
  • Reference numeral 4 denotes a reclining device that is provided on the rotation axis of the tilt of the seat back 3 and permits / inhibits the tilt of the seat back 3.
  • the reclining device 4 includes a first member (ratchet) 7 provided on the seat back 3 having a bottomed cylindrical shape with one surface being an open surface, and a circular shape on the inner cylindrical surface. Internal teeth 7a are formed along the circumferential direction. The four poles 9 are formed with external teeth 9a that can mesh with the internal teeth 7a.
  • a second member (base plate) 11 provided on the seat cushion 2 is laminated using an outer peripheral ring 10, and is rotatable relative to the first member 7 in the circumferential direction.
  • the second member 11 has both sides of each pole 9 sandwiched between the locked position where the outer teeth 9a mesh with the inner teeth 7a and the outer teeth 9a between the unlocked positions away from the inner teeth 7a.
  • Four pole guides 11a, 11b, and 11c for guiding are formed.
  • a cam 13 is provided between the first member 7 and the second member 11.
  • the cam 13 is attached to a shaft 8 that is rotatably fitted in a hole 7b that has the relative rotation axis of the first member 7 as a center.
  • the cam 13 is formed with protrusions 13a and 13b extending in the radial direction at a pitch of 90 degrees in the circumferential direction.
  • a portion 9c is formed.
  • a protrusion 9 b is formed on the surface of the pole 9 that faces the bottom surface of the first member 7.
  • a release plate 12 is attached to the peripheral surface of the cam 13 on the first member 7 side so as to rotate integrally with the cam 13.
  • the release plate 12 is formed with a cam hole 12a in which the protruding portion 9b of each pole is engaged.
  • the cam hole 12 is poled in a direction (lock position direction) in which the engagement between the outer teeth 9a and the inner teeth 7a is released. 9 is formed to move.
  • the cam 13 moves in one direction, that is, the external teeth 9a of the pole 9 are moved by a spring 15 comprising two spiral springs whose outer end is locked to the second member 11 and whose inner end is locked to the cam 13.
  • the first member 7 is biased in the direction of meshing with the internal teeth 7a (lock position direction).
  • each pole 9 provided on the second member 11 is in a locked position where the outer teeth 9a mesh with the inner teeth 7a of the first member 7 by the biasing force of the spring 15, and the first member 7 and the second member 9 Relative rotation with the member 11 is prohibited, and the seat back 3 is in a state where it cannot rotate relative to the seat cushion 2 (locked state).
  • each pole 9 is unlocked in which the engagement between the external teeth 9a and the internal teeth 7a is released.
  • the first member 7 and the second member 11 can be rotated relative to each other, and the seat back 3 can be rotated with respect to the seat cushion 2.
  • the reclining device shown in FIGS. 8 and 9 has four poles 9.
  • the parts constituting the reclining device have dimensional variations.
  • the cam 13 Since there is a backlash between the shaft 8 of the cam 13 and the hole 7b of the first member 7, the cam 13 is slightly movable on a plane orthogonal to the axis of relative rotation. Therefore, in the state where the outer teeth 9a of one of the four poles 9 and the inner teeth 7a of the first member 7 mesh with each other without play, one of the remaining three poles 9 is The internal teeth 7a of the one member 7 are meshed with no play, and the rotation of the cam 13 is prohibited.
  • the present invention has been made in view of the above-mentioned problems, and its object is to provide a reclining device having a large lock strength and a small backlash.
  • the amount of meshing between the external teeth of each pole and the internal teeth of the first member differs depending on the component accuracy. That is, at least one of the plurality of poles is in a meshing state in which it cannot move in the locking direction / unlocking direction, and the other poles are in a meshing state in which it can move slightly in the locking direction / unlocking direction.
  • the meshing state of the outer teeth and the inner teeth of the former pole is referred to as “meshing without play” or “meshing without play”.
  • the meshing state between the outer teeth and the inner teeth of the latter pole is referred to as “mesh with play” or “mesh with play”.
  • a reclining device reflecting one aspect of the present invention is capable of meshing with a first member having internal teeth formed along a circumferential direction and the internal teeth.
  • a cam mechanism that is rotatably provided on an axis of relative rotation and moves the pole in a direction in which the outer teeth mesh with the inner teeth when rotated in one direction, and the plurality of poles At least one pair of main poles arranged at corner positions In the state where the cam mechanism moves the respective poles to the locked position, and the external teeth of the pair of main poles and the internal teeth of the first member are engaged
  • the plurality of poles includes a pair of main poles disposed at diagonal positions and at least one sub-pole, and the cam mechanism moves the respective poles to a locked position, and In a state where the external teeth of the main pole and the internal teeth of the first member are engaged with no play, the external teeth of the sub pole and the internal teeth of the first member are engaged with each other in a diagonal manner. Engagement with no play in the position is obtained, lock strength is large, and there is little play.
  • FIG. 3 is a cross-sectional view taken along section line III-III in FIG. 2.
  • FIG. 4 is a cross-sectional view taken along a cutting line IV-IV in FIG. 2.
  • It is a perspective view of the 1st pole and 2nd cam of FIG.
  • It is the perspective view seen from the arrow VI direction of FIG.
  • It is a lineblock diagram of a sheet.
  • It is a disassembled perspective view of the conventional reclining apparatus. It is an A direction arrow directional view in the state assembled
  • the climbing apparatus according to the present embodiment is provided on the rotation axis of the tilting of the seat back 3, similarly to the reclining apparatus 4 shown in FIG. 7.
  • FIG. 1 is an exploded perspective view of the reclining device of the present embodiment
  • FIG. 2 is a front view seen from the direction of arrow II when the reclining device of FIG. 1 is assembled
  • FIG. 3 is a cross section taken along section line III-III in FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 2
  • FIG. 5 is a perspective view of the first pole and the second cam in FIG. 1
  • FIG. 6 is a perspective view as seen from the direction of arrow VI in FIG. It is.
  • a ratchet (first member) 21 provided on the seat back side is a bottomed cylindrical shape obtained by half punching (half blanking) a disk-like plate material by a press, and a circular recess 21a is formed.
  • Inner teeth 23 are formed in the entire circumferential direction on the inner circumferential surface of the circular recess 21a.
  • a through hole 21b is formed at the center of the circular recess 21a.
  • the base plate (second member) 25 provided on the seat cushion side is also half-punched with a press to form a circular recess 25a.
  • the diameter of the circular recess 25 a is set slightly larger than the outer diameter of the ratchet 21.
  • the ratchet 21 is engage
  • a through hole 21 b is formed in the center of the ratchet 21.
  • the outer peripheral portion of the ratchet 21 and the outer peripheral portion of the base plate 25 are sandwiched by a ring-shaped outer peripheral ring 27, and the ratchet 21 and the base plate 25 are separated in the direction of the axis of relative rotation (O in FIG. 1). Without being relatively rotatable.
  • a first cam (cam mechanism) 31 is disposed in a space formed by the circular recess 21a of the ratchet 21 and the circular recess 25a of the base plate 25.
  • the first cam 31 has a main body 31b extending on a plane orthogonal to the axis of relative rotation, a cylindrical shape, a shaft that is rotatably supported by the hole 25b of the base plate 25, and protrudes to the outside through the hole 25b. 31a.
  • the cross-sectional shape of the shaft portion 31a on a plane orthogonal to the axis of relative rotation is a substantially oval shape.
  • the main body 31b is formed with two protrusions 31c protruding in the ratchet 21 direction.
  • a release plate 33 is disposed between the first cam 31 and the circular recess 21 a of the ratchet 21.
  • the release plate 33 is formed with a hole 33a in which the protrusion 31c of the first cam 31 is engaged. The first cam 31 and the release plate 33 are rotated together by the engagement of the protrusion 31c and the hole 33a.
  • first poles (main poles) 41 and second poles (subpoles) 43 are arranged along the circumferential direction.
  • the pair of first poles 41 are disposed at diagonal positions, and are further disposed in the vertical direction.
  • Outer teeth 41 a and 43 a that can mesh with the inner teeth 23 are formed on the surfaces of the first pole 41 and the second pole 43 that face the inner teeth 23.
  • pole guides 37 are formed so as to sandwich the side portions of the first pole 41 and the second pole 43.
  • the pole guide 37 allows the first pole 41 and the second pole 43 to move only in the radial direction of relative rotation. That is, the pole guide 37 has a lock position in which the external teeth 41 a and the external teeth 43 a mesh with the internal teeth 23 of the ratchet 21, and an external position between the external teeth 41 a and the external teeth 43 a in the unlocked position apart from the internal teeth 23 of the ratchet 21.
  • the first pole 41 and the second pole 43 are guided.
  • a second cam (cam mechanism) 45 is disposed between the first pole 41 and the first cam 31.
  • the back surface of the first pole 41 extends to the external teeth 41a.
  • a concave portion 41b is formed.
  • the bottom face side of the recessed part 41b is the laminated part 41c.
  • the second cam 45 is fitted to the contact portion 45a that can contact the back surface of the first pole 41 and the concave portion 41b of the first pole 41, and overlaps the stacked portion 41c in the axial direction of relative rotation. Part 45c.
  • the release plate 33 is formed with a protrusion 41d of the first pole 41 and the second pole 43, a cam hole 33b and a cam hole 33c with which the protrusion 43d engages.
  • the cam hole 33b and the cam hole 33c are formed on the outer teeth 41a of the first pole 41 and the second pole 43 along the pole guide 37 when the release plate 33 rotates in the arrow T direction (the other direction) in FIG.
  • the outer teeth 43a are set to a shape in which the first pole 41 and the second pole 43 are moved in a direction away from the inner teeth 23 of the ratchet 21 (unlock position direction).
  • the first outer periphery of the main body 31b of the first cam 31 is formed with four first protrusions 31d and four second protrusions 31e alternately along the circumferential direction.
  • the first protrusion 31d is formed in a V-shaped groove formed in a portion of the second cam 45 facing the first cam 31. 45b (see FIGS. 5 and 6) and the inclined surface of the V-shaped groove 43b formed on the second pole 43 facing the first cam 31 and pressed against the second pole 43 and the second cam 45.
  • the first pole 41 is configured to move along the pole guide 37 in a direction (lock position direction) in which the external teeth 41 a and the external teeth 43 a mesh with the internal teeth 23 of the ratchet 21.
  • the second protrusion 31e is a protrusion formed at a portion of the first pole 41 facing the first cam 31 when the first cam 31 rotates in the direction opposite to the arrow T direction (one direction) in FIG.
  • the protrusion 41c formed on the portion 41e (see FIGS. 5 and 6) and the portion of the second pole 43 facing the first cam 31 is opposed to the protrusion 43c with a slight gap.
  • the tip surface of the first protrusion 31d of the present embodiment is a circumferential surface centered on the axis of relative rotation.
  • the inner end portion of the spiral spring 51 is locked to the shaft portion 31a of the first cam 31 protruding outward from the base plate 25.
  • the outer end portion of the spiral spring 51 is locked to the base plate 25.
  • the spiral spring 51 urges the first cam 31 in the direction opposite to the arrow T direction (one direction). Therefore, the spiral spring 51 functions as a member that biases the first pole 41 and the second pole 43 in the lock position direction.
  • the first pole 41 and the second pole 43 provided on the base plate 25 via the first cam 31 by the biasing force of the spiral spring 51 are external teeth 41 a and external teeth 43 a are internal teeth 23 of the ratchet 21.
  • the ratchet (first member) 21 and the base plate (second member) 25 are prohibited from rotating relative to each other, and the seat back cannot rotate relative to the seat cushion (locked state).
  • the outer teeth 41a of the first pole 41 and the inner teeth 23 of the ratchet 21 have no play.
  • the distal end surface of the first protrusion 31d of the first cam 31 and the second cam so that the outer teeth 43a of the second pole 43 and the inner teeth 23 of the ratchet 21 are engaged.
  • the slope of the groove 45b of 45 and the slope of the groove 43b of the second pole 43 are formed.
  • the tip surface of the first protrusion 31d of the first cam 31 is a circumferential surface centered on the axis of relative rotation, and the external teeth 41a of the first pole 41 and the internal teeth 23 of the ratchet 21 are free to play.
  • the tip surface of the first protrusion 31d of the first cam 31 pushes the slope of the groove 45b of the second cam 45, but the meshing of the outer teeth 41a of the first pole and the inner teeth 23 occurs.
  • a plurality of poles are composed of a pair of first poles (main poles) 41 and a pair of second poles (subpoles) 43 arranged at diagonal positions, and the first cam (cam mechanism) 31 is the first one.
  • the first pole 41, the first cam (cam mechanism) 31 and the second cam (cam mechanism) 45 move the second pole 43 to the locked position, and the external teeth 41a of the first pole (main pole) 41 and the ratchet (first In a state where the inner teeth 23 of the one member) 21 are engaged without play, the outer teeth 43 of the second pole (sub-pole) 43 and the inner teeth 23 of the ratchet (first member) 21 are engaged with play.
  • engagement with no play at the diagonal position is obtained, lock strength is large, and play is small.
  • the first pole (main pole) 41 is arranged in the vertical direction, so that the engagement without play is in the vertical direction and no backlash occurs due to vibration in the front-rear direction.
  • the tip surface of the first protrusion 31d of the first cam 31 is a circumferential surface centered on the axis of relative rotation, and there is no play between the outer teeth 41a of the first pole 41 and the inner teeth 23 of the ratchet 21.
  • the tip surface of the first protrusion 31d of the first cam 31 pushes the inclined surface of the groove 45b of the second cam 45, but the amount of engagement between the outer teeth 41a of the first pole and the inner teeth 23
  • the first cam 31 moves the first pole 41 and the second pole 43 to the locked position by making a difference in the meshing amount between the external teeth 43a and the internal teeth 23 of the second pole 43
  • the outer teeth 43a of the second pole 43 and the inner teeth 23 of the ratchet 21 are engaged with play. it can.
  • the heel cam mechanism is rotatably provided on the axis of relative rotation, and directly pushes the surface of the second pole (sub-pole) 43 opposite to the surface on which the external teeth 43a are provided so that the external teeth 43a are ratchet ( Provided between the first cam 31 for moving the second pole (sub-pole) 43 in the direction of meshing with the internal teeth 23 of the first member 21, and the first cam 31 and the first pole (main pole) 41, When pressed by the first cam 31, the inclined surface of the groove 45 b formed on the opposite side of the surface on which the external teeth 43 a of the first pole (main pole) 41 are provided is pressed, and the external teeth 43 a are ratchet (first member) 21.
  • the shape of the second cam may be a circular second cam disposed between the first pole and the first cam.
  • the number of the second poles 43 is not limited to two, but may be one or more.

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 vise à procurer un dispositif d'inclinaison ayant une force de verrouillage élevée et un cliquettement réduit. A cet effet, l'invention porte sur un dispositif d'inclinaison, qui comprend : une paire de premiers cliquets (cliquets principaux) (41) disposés en des positions diagonales ; et au moins un second cliquet (sous-cliquet) (43). Une première came (mécanisme de came) (31) déplace chacun des cliquets vers une position de verrouillage, et, lorsque les dents externes (41a) des premiers cliquets (41) et les dents internes (23) d'un rochet (premier élément) (21) sont dans un état dans lequel les dents externes (41a) et les dents internes (23) s'engrènent sans jeu, les dents externes (43a) du second cliquet (43) et les dents internes (23) du rochet (21) s'engrènent avec un jeu.
PCT/JP2012/051542 2011-02-28 2012-01-25 Dispositif d'inclinaison WO2012117772A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011041530A JP5635435B2 (ja) 2011-02-28 2011-02-28 リクライニング装置
JP2011-041530 2011-02-28

Publications (1)

Publication Number Publication Date
WO2012117772A1 true WO2012117772A1 (fr) 2012-09-07

Family

ID=46757714

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/051542 WO2012117772A1 (fr) 2011-02-28 2012-01-25 Dispositif d'inclinaison

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JP (1) JP5635435B2 (fr)
WO (1) WO2012117772A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019164017A1 (fr) * 2018-02-26 2019-08-29 トヨタ紡織株式会社 Dispositif d'inclinaison de siège de véhicule
US20230001828A1 (en) * 2019-11-28 2023-01-05 Toyota Boshoku Kabushiki Kaisha Vehicle seat reclining device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101705609B1 (ko) * 2015-07-16 2017-02-13 현대다이모스(주) 시트의 리클라이닝 기구
JP7114298B2 (ja) * 2018-03-29 2022-08-08 シロキ工業株式会社 リクライニング装置
JP7180468B2 (ja) * 2019-03-18 2022-11-30 トヨタ紡織株式会社 乗物用シートリクライニング装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050052063A1 (en) * 2003-09-05 2005-03-10 Dura Global Technologies, Inc. Reclining vehicle seat hinge assembly
US20070040436A1 (en) * 2005-08-22 2007-02-22 Yasukazu Oki Recliner adjuster
WO2007034683A1 (fr) * 2005-09-26 2007-03-29 Toyota Boshoku Kabushiki Kaisha Dispositif de verrouillage de rotation
JP2012011165A (ja) * 2010-05-31 2012-01-19 Imasen Electric Ind Co Ltd リクライニング装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050052063A1 (en) * 2003-09-05 2005-03-10 Dura Global Technologies, Inc. Reclining vehicle seat hinge assembly
US20070040436A1 (en) * 2005-08-22 2007-02-22 Yasukazu Oki Recliner adjuster
WO2007034683A1 (fr) * 2005-09-26 2007-03-29 Toyota Boshoku Kabushiki Kaisha Dispositif de verrouillage de rotation
JP2012011165A (ja) * 2010-05-31 2012-01-19 Imasen Electric Ind Co Ltd リクライニング装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019164017A1 (fr) * 2018-02-26 2019-08-29 トヨタ紡織株式会社 Dispositif d'inclinaison de siège de véhicule
CN111757818A (zh) * 2018-02-26 2020-10-09 丰田纺织株式会社 交通工具座椅倾角调节装置
US11046214B2 (en) 2018-02-26 2021-06-29 Toyota Boshoku Kabushiki Kaisha Vehicle seat reclining device
US20230001828A1 (en) * 2019-11-28 2023-01-05 Toyota Boshoku Kabushiki Kaisha Vehicle seat reclining device
US11872915B2 (en) * 2019-11-28 2024-01-16 Toyota Boshoku Kabushiki Kaisha Vehicle seat reclining device

Also Published As

Publication number Publication date
JP5635435B2 (ja) 2014-12-03
JP2012176198A (ja) 2012-09-13

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