WO2012001769A1 - Seat reclining device for tiltably holding seat back - Google Patents

Seat reclining device for tiltably holding seat back Download PDF

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Publication number
WO2012001769A1
WO2012001769A1 PCT/JP2010/061055 JP2010061055W WO2012001769A1 WO 2012001769 A1 WO2012001769 A1 WO 2012001769A1 JP 2010061055 W JP2010061055 W JP 2010061055W WO 2012001769 A1 WO2012001769 A1 WO 2012001769A1
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Prior art keywords
gear
internal gear
external
frame
internal
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PCT/JP2010/061055
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French (fr)
Japanese (ja)
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琢人 江崎
武留 西村
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株式会社今仙電機製作所
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Priority to PCT/JP2010/061055 priority Critical patent/WO2012001769A1/en
Publication of WO2012001769A1 publication Critical patent/WO2012001769A1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/22Seats 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
    • B60N2/225Seats 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 cycloidal or planetary mechanisms
    • B60N2/2252Seats 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 cycloidal or planetary mechanisms in which the central axis of the gearing lies inside the periphery of an orbital gear, e.g. one gear without sun gear

Definitions

  • the present invention relates to a seat reclining device that tiltably holds a seat back with respect to a seat cushion.
  • a reclining device disclosed in the following Patent Document 1 is known as a seat reclining device that tiltably holds a seat back with respect to a seat cushion.
  • the reclining device is configured such that the external teeth of the external gear that is welded to the lower arm and the internal teeth of the internal gear that is welded to the upper arm are inscribed.
  • a recess is formed in the opposing surface of the external gear and the internal gear so that a substantially arc-shaped space is formed on the opposing surface of the external gear, and the opposing surface of the internal gear protrudes into the recess. Protrusions are formed.
  • the opposing surface of the external gear is substantially arranged to bring the convex portion of the internal gear into contact with the side wall of the concave portion of the external gear.
  • An arc-shaped space is required.
  • the present invention has been made to solve the above-described problems, and an object thereof is to provide a reclining device capable of reducing the thickness in the axial direction.
  • a seat reclining device for tiltably holding a seat back relative to a seat cushion, wherein either the seat cushion or the seat back is provided.
  • a first frame fixed to the second frame, a second frame fixed to the other of the seat cushion and the seat back, and an external gear connected to the first frame and having outer teeth formed on an outer peripheral surface thereof.
  • An external gear provided with a convex portion protruding in the axial direction from the side opposite to the side connected to one frame, and an internal tooth that can mesh with the external tooth and has a larger number of teeth than the external tooth are formed.
  • An internal gear that engages with the second frame at a protruding portion that protrudes in an arc from the other side facing the one side that is the side on which the internal teeth are formed.
  • An internal gear coupled to the second frame, and a rotary shaft that is coaxially and rotatably fitted to the external gear and revolves one of the external gear and the internal gear about the other gear shaft And.
  • the said one side surface of the said internal gear is provided with the recessed part dented in circular arc shape according to the protrusion amount of the said protrusion part in the site
  • the said recessed part is the said external teeth and the said The convex portion is inserted when the internal teeth mesh with each other, and the relative rotation is controlled within a certain range by contacting the convex portion at a predetermined relative rotational position when the external gear and the internal gear rotate relative to each other. Is formed.
  • a reclining device according to the first aspect, wherein the outer gear is provided with two convex portions symmetrically with respect to a rotation center thereof, The gear is provided with two concave portions that abut against the two convex portions in accordance with the predetermined relative rotational position, and two protruding portions are provided on the other side surface respectively facing the concave portions.
  • the external gear is provided with a convex portion protruding from the side surface opposite to the side connected to the first frame.
  • the internal gear is provided with an arcuate protrusion on the other side facing the one side on which the internal teeth are formed, and the protrusion engages with the second frame so that the internal gear Connected to the frame.
  • a recess that is recessed in an arc shape according to the protrusion amount of the protrusion is provided at a portion facing the protrusion, and the recess engages with the external teeth and the internal teeth.
  • the protrusion on the other side functions as an engaging member for engaging the internal gear with the second frame
  • the concave on one side is the convex of the external gear at the predetermined relative rotational position. It can function as a regulating member that abuts on the gear and regulates the relative rotation of both gears.
  • the concave amount of the concave portion as the restricting member is set according to the protruding amount of the protruding portion that protrudes as the engaging member, thereby bringing the convex portion of the internal gear into contact with the side wall of the concave portion of the external gear.
  • the external gear is provided with the two convex portions symmetrically with respect to the rotation center thereof, and the internal gear has the predetermined relative rotational position. Accordingly, the two concave portions that contact the both convex portions are provided on one side surface, and the two projecting portions are provided on the other side portions respectively facing the concave portions.
  • both convex portions and both concave portions are formed symmetrically with respect to the center of rotation, so that not only work errors related to the assembly work of both gears are eliminated, but also the effects of heat treatment distortion during gear manufacturing, etc. Therefore, the manufacturing cost of the reclining device can be reduced as compared with the case where both the convex portions and the both concave portions are manufactured asymmetrically.
  • FIG. 2 is a cross-sectional view of the reclining device 20.
  • FIG. 3 is an exploded perspective view of the reclining device 20.
  • FIG. It is the side view which looked at the external gear 23 from the other side surface 23c side. It is the side view which looked at the internal gearwheel 24 from the side surface 24b side.
  • a vehicle seat 10 equipped with a reclining device 20 of the present invention includes a seat cushion 11 that receives a seated portion of the seated person, and can tilt with respect to the seat cushion 11 and is a back part of the seated person. And a seat back 12 for receiving.
  • the seat back 12 can be tilted with respect to the seat cushion 11 in accordance with an operation of an operation lever (not shown) connected to the reclining device 20.
  • the reclining device 20 includes an external gear 23, an internal gear 24, a rotating shaft 25, a bush 26, a connecting member 27, a spring 28, and a pressing member, in addition to both the frames 21 and 22 described above. 29 and a lid member 30 are provided.
  • the description of both frames 21 and 22 is omitted.
  • the external gear 23 is formed in a substantially annular shape, and external teeth 23a are formed on the outer peripheral surface thereof. Further, on the other side surface 23c facing the one side surface 23b which is the side surface on the first frame 21 side of the external gear 23, there are a cylindrical portion 23d that protrudes coaxially from the center portion and two convex portions 23e that protrude from the vicinity of the outer edge. Is formed. Both convex portions 23e are provided symmetrically with respect to the rotation center. A plurality of columnar protrusions 23 f for connecting the external gear 23 to the first frame 21 are provided on one side surface 23 b of the external gear 23.
  • the internal gear 24 is formed in a substantially annular shape, and an inner tooth 24a is formed on the outer edge of one side surface 24b thereof.
  • the internal teeth 24a can be meshed with the external teeth 23a and are formed to have a larger number of teeth than the external teeth 23a.
  • two arc-shaped projections 24d and two columnar projections 24e for connecting the internal gear 24 to the second frame 22 have a rotation center. They are provided symmetrically with respect to the reference and projecting in the axial direction.
  • the one side surface 24b of the internal gear 24 is provided with two concave portions 24f that are recessed in an arc shape in accordance with the protruding amount of both the protruding portions 24d at a portion facing both the protruding portions 24d (see FIG. 2). ).
  • Both concave portions 24f are inserted by both convex portions 23e when the external teeth 23a and the internal teeth 24a mesh with each other, and abut against the convex portions 23e at a predetermined relative rotational position when the external gear 23 and the internal gear 24 rotate relative to each other. It is formed as follows.
  • the rotary shaft 25 is coaxial with the cylindrical portion 23d of the external gear 23 and is formed to be rotatably fitted.
  • the rotary shaft 25 is rotationally driven according to the operation of the operation lever when the seat back 12 is tilted with respect to the seat cushion 11, and the inner surface of the rotary shaft 25 is connected to the operation lever. Serrations are formed.
  • the external gear 23 and the internal gear 24 configured as described above are connected by meshing the external teeth 23a and the internal teeth 24a so that both convex portions 23e are inserted into the corresponding concave portions 24f, respectively.
  • the recesses 24f are set in accordance with the protrusions of the protrusions 24d, the relative rotation of the two gears can be achieved by bringing the protrusions of the internal gear and the recesses of the external gear into contact with each other. Since it is not necessary to provide a space for restriction between the two gears, the axial separation distance between the other side surface 23c of the external gear 23 and the other side surface 24c of the internal gear 24 at the time of meshing is reduced.
  • a cylindrical bush 26 having excellent wear resistance is fitted into the inner peripheral surface 24g of the internal gear 24, and between the inner peripheral surface of the bush 26 and the outer peripheral surface of the cylindrical portion 23d of the external gear 23.
  • the connecting member 27 is inserted so as to be in contact with both.
  • the connecting member 27 is disposed between the inner peripheral surface of the bush 26 and the outer peripheral surface of the cylindrical portion 23d, thereby causing the internal gear 24 to be eccentric with respect to the external gear 23, and meshing the internal teeth 24a with the external teeth 23a. It is something to be made.
  • the rotary shaft 25 fitted to the external gear 23 is engaged with the external teeth 23a and the internal teeth 24a by the connecting member 27, and revolves around either the external gear 23 or the internal gear 24 around the other gear shaft.
  • a spring 28 is engaged with the connecting member 27, and unless the rotational force is input to the rotating shaft 25, the connecting member 27 is moved by the spring 28 so as to inhibit the relative movement between the rotating shaft 25 and the internal gear 24. It is energized.
  • the cylindrical pressing member 29 is fitted to the outer peripheral surface of the internal gear 24 at the outer edge in a state where the cylindrical pressing member 29 is in contact with the vicinity of the outer edge of the outer gear 23 in the vicinity of the inner edge.
  • the external gear 23 and the internal gear 24 are urged so as to be close to each other.
  • the lid member 30 formed in a substantially annular shape has two arcuate engagement holes 30a and two circular engagement holes 30b formed in both the projecting portions 24d and both projections 24e of the internal gear 24, respectively. It is assembled to the internal gear 24 so that one end of the rotary shaft 25 protrudes from the center through hole. Accordingly, the connecting member 27 and the like are accommodated inside the inner peripheral surface 24g of the internal gear 24.
  • both the protruding portions 24 d and both protrusions 24 e with which the lid member 30 is engaged are connected to the engagement holes 22 a of the second frame 22.
  • the reclining device 20 shown in FIG. 2 is completed.
  • the external gear 23 is provided with the convex portion 23e protruding from the other side surface 23c.
  • the internal gear 24 is provided with two arc-shaped protrusions 24 d on the other side surface 24 c, and the internal gear 24 is connected to the second frame 22 by engaging both the protrusions 24 d with the second frame 22.
  • the one side surface 24b of the internal gear 24 is provided with two concave portions 24f that are recessed in an arc shape in accordance with the protruding amount of the protruding portion 24d at a portion facing both the protruding portions 24d.
  • both projecting portions 24d on the other side surface 24c function as engaging members for engaging the internal gear 24 with the second frame 22, and both concave portions 24f on the one side surface 24b It can function as a regulating member that abuts against both convex portions 23e of the external gear 23 at the relative rotational position and regulates the relative rotation of the gears 23 and 24.
  • the convex portions of the internal gear and the external gear as described above are set.
  • the external gear 23 is provided with the two convex portions 23e symmetrically with respect to the rotation center thereof, and the internal gear 24 is provided in accordance with the predetermined relative rotational position.
  • two concave portions 24f that come into contact with both convex portions 23e are provided on one side surface 24b, and two protruding portions 24d are provided on portions of the other side surface 24c that face both the concave portions 24f.
  • both the convex portions 23e and both concave portions 24f are formed symmetrically with respect to the center of rotation, so that not only work errors related to the assembly work of both gears 23 and 24 are eliminated, but also heat treatment during gear manufacturing. Since the influence of distortion or the like is reduced, the manufacturing cost of the reclining device 20 can be reduced as compared with the case where both the convex portions and the both concave portions are manufactured asymmetrically.
  • the protrusions 23e of the external gear 23 and the protrusions 24d and the recesses 24f of the internal gear 24 are not limited to be provided symmetrically with respect to the two rotation centers, but are more than three symmetrical with respect to the rotation center. May be provided. Further, when the load at the time of restricting the relative rotation of both gears 23 and 24 is small, the convex portion 23e of the external gear 23, the protruding portion 24d and the concave portion 24f of the internal gear 24 may be provided one by one.
  • the first frame 21 and the second frame 22 may be part of the seat frame 11a and the back frame 12a.
  • the reclining device of the present invention is industrially useful because it can reduce the axial thickness.

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

Abstract

Convex parts (23e) protruding from a first side surface (23b) are disposed in an external gear (23). Two arc-shaped protruding parts (24d) are disposed at a second side surface (24c) in an internal gear (24), and the internal gear (24) is linked to a second frame (22) due to both of the protruding parts (24d) coupling with the second frame (22). In a first side surface (24b) of the internal gear (24), two arc-shaped concave parts (24f) are disposed corresponding to the amount of protrusion of the protruding parts (24d) at locations opposing both protruding parts (24d). Both concave parts (24f) are formed in such a way that the convex parts (23e) are inserted into both two concave parts (24f) when an external tooth (23a) and an internal tooth (24a) engage with each other, and both concave parts (24f) come into contact with the convex parts (23e) at predetermined relative rotation positions when the external gear (23) and the internal gear (24) rotate relative to each other, to thereby regulate the relative rotation of both gears (23, 24) within a fixed range. A reclining device is therefore realized which has reduced width in the axial direction.

Description

シートバックを傾動可能に保持するシートのリクライニング装置Seat reclining device for tilting and holding the seat back
 本発明は、シートクッションに対してシートバックを傾動可能に保持するシートのリクライニング装置に関するものである。 The present invention relates to a seat reclining device that tiltably holds a seat back with respect to a seat cushion.
 従来、シートクッションに対してシートバックを傾動可能に保持するシートのリクライニング装置として下記特許文献1に開示されるリクライニング装置が知られている。このリクライニング装置は、ロアアームに溶接される外歯歯車の外歯とアッパアームに溶接される内歯歯車の内歯とが内接するように構成されている。また、外歯歯車と内歯歯車の対向面の内、外歯歯車の対向面には略円弧状の空間が生じるように凹部が形成され、内歯歯車の対向面には凹部内に突出した凸部が形成されている。そして、外歯歯車および内歯歯車が相対回転する際に、内歯歯車の凸部が外歯歯車の凹部の側壁に当接することにより内歯歯車の回転を一定範囲内に規制することで、シートバックの傾斜角の調整範囲を規制している。 Conventionally, a reclining device disclosed in the following Patent Document 1 is known as a seat reclining device that tiltably holds a seat back with respect to a seat cushion. The reclining device is configured such that the external teeth of the external gear that is welded to the lower arm and the internal teeth of the internal gear that is welded to the upper arm are inscribed. In addition, a recess is formed in the opposing surface of the external gear and the internal gear so that a substantially arc-shaped space is formed on the opposing surface of the external gear, and the opposing surface of the internal gear protrudes into the recess. Protrusions are formed. And, when the external gear and the internal gear are relatively rotated, by restricting the rotation of the internal gear within a certain range by the convex portion of the internal gear contacting the side wall of the concave portion of the external gear, The adjustment range of the inclination angle of the seat back is regulated.
特許第3946948号公報Japanese Patent No. 3946948
 しかしながら、上述のようにシートバックの傾斜角の調整範囲を規制するためには、内歯歯車の凸部と外歯歯車の凹部の側壁とを当接させるために外歯歯車の対向面に略円弧状の空間が必要となる。このため、外歯歯車および内歯歯車を有する歯車機構の軸方向の長さが長くなるので、リクライニング装置の軸方向の厚みを薄くすることができないという問題があった。 However, as described above, in order to restrict the adjustment range of the inclination angle of the seatback, the opposing surface of the external gear is substantially arranged to bring the convex portion of the internal gear into contact with the side wall of the concave portion of the external gear. An arc-shaped space is required. For this reason, since the axial length of the gear mechanism having the external gear and the internal gear is increased, there is a problem in that the axial thickness of the reclining device cannot be reduced.
 本発明は、上述した課題を解決するためになされたものであり、その目的とするところは、軸方向の厚みを薄くし得るリクライニング装置を提供することにある。 The present invention has been made to solve the above-described problems, and an object thereof is to provide a reclining device capable of reducing the thickness in the axial direction.
 上記目的を達成するため、本発明のうち第1の態様に係るものは、シートクッションに対してシートバックを傾動可能に保持するシートのリクライニング装置であって、シートクッションおよびシートバックのいずれか一方に固定される第1フレームと、シートクッションおよびシートバックの他方に固定される第2フレームと、前記第1フレームに連結されて外周面に外歯が形成される外歯車であって、前記第1フレームに連結される側とは反対側の側面から軸方向に突出する凸部が設けられる外歯車と、前記外歯に噛合可能であり当該外歯よりも歯数が多い内歯が形成される内歯車であって、前記内歯が形成される側の側面である一側面に対して対向する他側面から円弧状に突出する突出部にて前記第2フレームに係合することにより当該第2フレームに連結される内歯車と、前記外歯車に同軸的かつ回転自在に嵌合するとともに、前記外歯車および前記内歯車のいずれか一方を他方の歯車軸を中心に公転させる回転軸と、を備えている。そして、前記内歯車の前記一側面には、前記突出部に対向する部位にて当該突出部の突出量に応じて円弧状に凹む凹部が設けられており、前記凹部は、前記外歯および前記内歯が噛合するとき前記凸部が挿入し、前記外歯車および前記内歯車が相対回転するとき所定の相対回転位置で前記凸部に当接することで前記相対回転を一定範囲内に規制するように形成されている。 To achieve the above object, according to a first aspect of the present invention, there is provided a seat reclining device for tiltably holding a seat back relative to a seat cushion, wherein either the seat cushion or the seat back is provided. A first frame fixed to the second frame, a second frame fixed to the other of the seat cushion and the seat back, and an external gear connected to the first frame and having outer teeth formed on an outer peripheral surface thereof. An external gear provided with a convex portion protruding in the axial direction from the side opposite to the side connected to one frame, and an internal tooth that can mesh with the external tooth and has a larger number of teeth than the external tooth are formed. An internal gear that engages with the second frame at a protruding portion that protrudes in an arc from the other side facing the one side that is the side on which the internal teeth are formed. An internal gear coupled to the second frame, and a rotary shaft that is coaxially and rotatably fitted to the external gear and revolves one of the external gear and the internal gear about the other gear shaft And. And the said one side surface of the said internal gear is provided with the recessed part dented in circular arc shape according to the protrusion amount of the said protrusion part in the site | part facing the said protrusion part, The said recessed part is the said external teeth and the said The convex portion is inserted when the internal teeth mesh with each other, and the relative rotation is controlled within a certain range by contacting the convex portion at a predetermined relative rotational position when the external gear and the internal gear rotate relative to each other. Is formed.
 本発明のうち第2の態様に係るものは、第1の態様に係るリクライニング装置であって、前記外歯車には、その回転中心を基準に前記凸部が対称に2つ設けられ、前記内歯車には、前記所定の相対回転位置に応じて前記両凸部に当接する前記凹部が2つ設けられるとともにこれら両凹部にそれぞれ対向する前記他側面の部位に前記突出部が2つ設けられている。 According to a second aspect of the present invention, there is provided a reclining device according to the first aspect, wherein the outer gear is provided with two convex portions symmetrically with respect to a rotation center thereof, The gear is provided with two concave portions that abut against the two convex portions in accordance with the predetermined relative rotational position, and two protruding portions are provided on the other side surface respectively facing the concave portions. Yes.
 本発明の第1の態様に係るリクライニング装置によれば、外歯車には第1フレームに連結される側とは反対側の側面から突出する凸部が設けられている。内歯車には内歯が形成される一側面に対して対向する他側面に円弧状の突出部が設けられており、この突出部が第2フレームに係合することにより当該内歯車が第2フレームに連結される。そして、内歯車の一側面には、突出部に対向する部位にて当該突出部の突出量に応じて円弧状に凹む凹部が設けられており、この凹部は、外歯および内歯が噛合するとき凸部が挿入し、外歯車および内歯車が相対回転するとき所定の相対回転位置で凸部に当接することで両歯車の相対回転を一定範囲内に規制するように形成される。 According to the reclining device according to the first aspect of the present invention, the external gear is provided with a convex portion protruding from the side surface opposite to the side connected to the first frame. The internal gear is provided with an arcuate protrusion on the other side facing the one side on which the internal teeth are formed, and the protrusion engages with the second frame so that the internal gear Connected to the frame. Then, on one side surface of the internal gear, a recess that is recessed in an arc shape according to the protrusion amount of the protrusion is provided at a portion facing the protrusion, and the recess engages with the external teeth and the internal teeth. When the convex portion is inserted and the external gear and the internal gear rotate relative to each other, the relative rotation of both gears is regulated within a certain range by contacting the convex portion at a predetermined relative rotational position.
 これにより、内歯車において、他側面の突出部は当該内歯車を第2フレームに係合するための係合部材として機能し、一側面の凹部は上記所定の相対回転位置で外歯車の凸部に当接して両歯車の相対回転を規制する規制部材として機能し得る。このように、係合部材として突出する突出部の突出量に応じて規制部材としての凹部の凹み量が設定されることにより、内歯車の凸部と外歯車の凹部の側壁とを当接させることで両歯車の相対回転を規制するための空間を両歯車間に設ける必要がないので、当該リクライニング装置の軸方向の厚みを薄くすることができる。 Thereby, in the internal gear, the protrusion on the other side functions as an engaging member for engaging the internal gear with the second frame, and the concave on one side is the convex of the external gear at the predetermined relative rotational position. It can function as a regulating member that abuts on the gear and regulates the relative rotation of both gears. As described above, the concave amount of the concave portion as the restricting member is set according to the protruding amount of the protruding portion that protrudes as the engaging member, thereby bringing the convex portion of the internal gear into contact with the side wall of the concave portion of the external gear. Thus, since it is not necessary to provide a space for restricting the relative rotation of both gears between the two gears, the thickness of the reclining device in the axial direction can be reduced.
 また、本発明の第2の態様に係るリクライニング装置によれば、外歯車には、その回転中心を基準に上記凸部が対称に2つ設けられ、内歯車には、上記所定の相対回転位置に応じて両凸部に当接する上記凹部が2つ一側面に設けられるとともにこれら両凹部にそれぞれ対向する他側面の部位に上記突出部が2つ設けられている。 Further, according to the reclining device according to the second aspect of the present invention, the external gear is provided with the two convex portions symmetrically with respect to the rotation center thereof, and the internal gear has the predetermined relative rotational position. Accordingly, the two concave portions that contact the both convex portions are provided on one side surface, and the two projecting portions are provided on the other side portions respectively facing the concave portions.
 これにより、2つの凸部と2つの凹部がそれぞれ当接することで両歯車の相対回転が規制されるので、凸部および凹部の当接時の衝撃が分散されて両歯車に作用する負荷を低減することができる。特に、両凸部および両凹部は、回転中心を基準に対称に形成されることとなるため、両歯車の組付け作業に関する作業ミスをなくすだけでなく、歯車製造時の熱処理歪み等の影響が少なくなるので、両凸部および両凹部が非対称に製造される場合と比較して、当該リクライニング装置の製造コストを低減することができる。 As a result, the relative rotation of the two gears is restricted by the two convex portions and the two concave portions coming into contact with each other, so that the impact applied to the convex portions and the concave portions is dispersed and the load acting on both gears is reduced. can do. In particular, both convex portions and both concave portions are formed symmetrically with respect to the center of rotation, so that not only work errors related to the assembly work of both gears are eliminated, but also the effects of heat treatment distortion during gear manufacturing, etc. Therefore, the manufacturing cost of the reclining device can be reduced as compared with the case where both the convex portions and the both concave portions are manufactured asymmetrically.
 本発明の目的、特徴、局面、及び利点は、以下の詳細な説明と添付図面とによって、より明白となる。 The objects, features, aspects, and advantages of the present invention will become more apparent from the following detailed description and the accompanying drawings.
本発明のリクライニング装置20を搭載する車両用シート10の一例を概念的に示す側面図である。It is a side view which shows notionally an example of vehicle seat 10 carrying reclining device 20 of the present invention. リクライニング装置20の断面図である。2 is a cross-sectional view of the reclining device 20. FIG. リクライニング装置20の分解斜視図である。3 is an exploded perspective view of the reclining device 20. FIG. 外歯車23を他側面23c側から見た側面図である。It is the side view which looked at the external gear 23 from the other side surface 23c side. 内歯車24を一側面24b側から見た側面図である。It is the side view which looked at the internal gearwheel 24 from the side surface 24b side.
 以下、本発明に係るリクライニング装置20を搭載する車両用シート10の一実施形態について図を参照して説明する。
 図1に示すように、本発明のリクライニング装置20を備えた車両用シート10は、着座者の座部を受けるシートクッション11と、このシートクッション11に対して傾動可能であって着座者の背部を受けるシートバック12とを備えている。
Hereinafter, an embodiment of a vehicle seat 10 equipped with a reclining device 20 according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, a vehicle seat 10 equipped with a reclining device 20 of the present invention includes a seat cushion 11 that receives a seated portion of the seated person, and can tilt with respect to the seat cushion 11 and is a back part of the seated person. And a seat back 12 for receiving.
 シートクッション11の骨格となる座部フレーム11aと、シートバック12の骨格となる背部フレーム12aとが、座部フレーム11aの端部に設置されたリクライニング装置20の第1フレーム21および第2フレーム22等を介して連結されて、当該リクライニング装置20に連結される操作レバー(図示略)の操作に応じて、シートバック12がシートクッション11に対して傾動可能となっている。 The first frame 21 and the second frame 22 of the reclining device 20 in which the seat frame 11a serving as the skeleton of the seat cushion 11 and the back frame 12a serving as the skeleton of the seat back 12 are installed at the end of the seat frame 11a. The seat back 12 can be tilted with respect to the seat cushion 11 in accordance with an operation of an operation lever (not shown) connected to the reclining device 20.
 図2および図3に示すように、リクライニング装置20は、上述した両フレーム21,22に加えて、外歯車23、内歯車24、回転軸25、ブッシュ26、連結部材27、スプリング28、押さえ部材29および蓋部材30を備えている。なお、図3では、両フレーム21,22の記載を省略している。 As shown in FIGS. 2 and 3, the reclining device 20 includes an external gear 23, an internal gear 24, a rotating shaft 25, a bush 26, a connecting member 27, a spring 28, and a pressing member, in addition to both the frames 21 and 22 described above. 29 and a lid member 30 are provided. In FIG. 3, the description of both frames 21 and 22 is omitted.
 図2~図4に示すように、外歯車23は、略円環状に形成されるとともにその外周面には外歯23aが形成されている。また、外歯車23の第1フレーム21側の側面である一側面23bに対向する他側面23cには、中央部から同軸的に突出する円筒部23dと外縁近傍から突出する2つの凸部23eが形成されている。両凸部23eは回転中心を基準に対称に設けられている。また、外歯車23の一側面23bには、当該外歯車23を第1フレーム21に連結するための複数の円柱状の突起23fが設けられている。 As shown in FIGS. 2 to 4, the external gear 23 is formed in a substantially annular shape, and external teeth 23a are formed on the outer peripheral surface thereof. Further, on the other side surface 23c facing the one side surface 23b which is the side surface on the first frame 21 side of the external gear 23, there are a cylindrical portion 23d that protrudes coaxially from the center portion and two convex portions 23e that protrude from the vicinity of the outer edge. Is formed. Both convex portions 23e are provided symmetrically with respect to the rotation center. A plurality of columnar protrusions 23 f for connecting the external gear 23 to the first frame 21 are provided on one side surface 23 b of the external gear 23.
 図2、図3および図5に示すように、内歯車24は、略円環状に形成されておりその一側面24bの外縁には内歯24aが形成されている。この内歯24aは、外歯23aに噛合可能であり当該外歯23aよりも歯数が多くなるように形成されている。また、一側面24bに対向する他側面24cには、当該内歯車24を第2フレーム22に連結するための2つの円弧状の突出部24dと2つの円柱状の突起24eとが、回転中心を基準に対称であって軸方向に突出するようにそれぞれ設けられている。 As shown in FIGS. 2, 3 and 5, the internal gear 24 is formed in a substantially annular shape, and an inner tooth 24a is formed on the outer edge of one side surface 24b thereof. The internal teeth 24a can be meshed with the external teeth 23a and are formed to have a larger number of teeth than the external teeth 23a. Further, on the other side surface 24c opposite to the one side surface 24b, two arc-shaped projections 24d and two columnar projections 24e for connecting the internal gear 24 to the second frame 22 have a rotation center. They are provided symmetrically with respect to the reference and projecting in the axial direction.
 また、内歯車24の一側面24bには、両突出部24dに対向する部位にて当該両突出部24dの突出量に応じて円弧状に凹む2つの凹部24fが設けられている(図2参照)。両凹部24fは、外歯23aおよび内歯24aが噛合するとき両凸部23eが挿入し、外歯車23および内歯車24が相対回転するとき所定の相対回転位置で両凸部23eにそれぞれ当接するように形成されている。 In addition, the one side surface 24b of the internal gear 24 is provided with two concave portions 24f that are recessed in an arc shape in accordance with the protruding amount of both the protruding portions 24d at a portion facing both the protruding portions 24d (see FIG. 2). ). Both concave portions 24f are inserted by both convex portions 23e when the external teeth 23a and the internal teeth 24a mesh with each other, and abut against the convex portions 23e at a predetermined relative rotational position when the external gear 23 and the internal gear 24 rotate relative to each other. It is formed as follows.
 回転軸25は、外歯車23の円筒部23dに対して同軸的であって回転自在に嵌合するように形成されている。この回転軸25は、シートバック12をシートクッション11に対して傾動させるときに操作レバーの操作に応じて回転駆動されるものであり、回転軸25の内面には、操作レバーを連結するためのセレーションが形成されている。 The rotary shaft 25 is coaxial with the cylindrical portion 23d of the external gear 23 and is formed to be rotatably fitted. The rotary shaft 25 is rotationally driven according to the operation of the operation lever when the seat back 12 is tilted with respect to the seat cushion 11, and the inner surface of the rotary shaft 25 is connected to the operation lever. Serrations are formed.
 上述のように構成される外歯車23および内歯車24は、両凸部23eが対応する凹部24fにそれぞれ挿入するように外歯23aおよび内歯24aが噛合して連結されている。 The external gear 23 and the internal gear 24 configured as described above are connected by meshing the external teeth 23a and the internal teeth 24a so that both convex portions 23e are inserted into the corresponding concave portions 24f, respectively.
 ここで、両凹部24fは突出部24dの突出量に応じて凹み量が設定されているため、内歯車の凸部と外歯車の凹部の側壁とを当接させることで両歯車の相対回転を規制するための空間を両歯車間に設ける必要がないので、噛合時における外歯車23の他側面23cと内歯車24の他側面24cとの軸方向の離間距離が小さくなる。 Here, since the recesses 24f are set in accordance with the protrusions of the protrusions 24d, the relative rotation of the two gears can be achieved by bringing the protrusions of the internal gear and the recesses of the external gear into contact with each other. Since it is not necessary to provide a space for restriction between the two gears, the axial separation distance between the other side surface 23c of the external gear 23 and the other side surface 24c of the internal gear 24 at the time of meshing is reduced.
 そして、内歯車24の内周面24gには耐摩耗性に優れた円筒形のブッシュ26が嵌め込まれるとともに、このブッシュ26の内周面と外歯車23の円筒部23dの外周面との間には、両者に接触するように、連結部材27が挿入される。 A cylindrical bush 26 having excellent wear resistance is fitted into the inner peripheral surface 24g of the internal gear 24, and between the inner peripheral surface of the bush 26 and the outer peripheral surface of the cylindrical portion 23d of the external gear 23. The connecting member 27 is inserted so as to be in contact with both.
 連結部材27は、ブッシュ26の内周面と円筒部23dの外周面との間に配置されることで、外歯車23に対して内歯車24を偏心させ、外歯23aに内歯24aを噛合させるものである。外歯車23に嵌合される回転軸25は、連結部材27により、外歯23aと内歯24aとを噛合させ、外歯車23および内歯車24のいずれか一方を他方の歯車軸を中心に公転させる。この連結部材27にはスプリング28が係合されており、回転軸25に回転力が入力されない限り、当該回転軸25と内歯車24との相対運動を禁止するように連結部材27がスプリング28によって付勢されている。 The connecting member 27 is disposed between the inner peripheral surface of the bush 26 and the outer peripheral surface of the cylindrical portion 23d, thereby causing the internal gear 24 to be eccentric with respect to the external gear 23, and meshing the internal teeth 24a with the external teeth 23a. It is something to be made. The rotary shaft 25 fitted to the external gear 23 is engaged with the external teeth 23a and the internal teeth 24a by the connecting member 27, and revolves around either the external gear 23 or the internal gear 24 around the other gear shaft. Let A spring 28 is engaged with the connecting member 27, and unless the rotational force is input to the rotating shaft 25, the connecting member 27 is moved by the spring 28 so as to inhibit the relative movement between the rotating shaft 25 and the internal gear 24. It is energized.
 そして、円筒状の押さえ部材29を、その内縁部近傍にて外歯車23の外縁近傍に接触した状態でその外縁部にて内歯車24の外周面に嵌合させることで、当該押さえ部材29により外歯車23と内歯車24とが互いに近接するように付勢される。 Then, the cylindrical pressing member 29 is fitted to the outer peripheral surface of the internal gear 24 at the outer edge in a state where the cylindrical pressing member 29 is in contact with the vicinity of the outer edge of the outer gear 23 in the vicinity of the inner edge. The external gear 23 and the internal gear 24 are urged so as to be close to each other.
 続いて、略円環状に形成された蓋部材30を、その円弧状の2つの係合穴30aと円状の2つの係合穴30bを内歯車24の両突出部24dおよび両突起24eにそれぞれ係合するとともにその中央の貫通穴から回転軸25の一端部を突出させるようにして、内歯車24に組み付ける。これにより、連結部材27等が内歯車24の内周面24gの内方に収容されることとなる。 Subsequently, the lid member 30 formed in a substantially annular shape has two arcuate engagement holes 30a and two circular engagement holes 30b formed in both the projecting portions 24d and both projections 24e of the internal gear 24, respectively. It is assembled to the internal gear 24 so that one end of the rotary shaft 25 protrudes from the center through hole. Accordingly, the connecting member 27 and the like are accommodated inside the inner peripheral surface 24g of the internal gear 24.
 そして、座部フレーム11aに連結される第1フレーム21と外歯車23とを連結するために、各突起23fを第1フレーム21の係合穴21aにそれぞれ係合させる。また、背部フレーム12aに連結される第2フレーム22と内歯車24とを連結するために、蓋部材30が係合された両突出部24dおよび両突起24eを第2フレーム22の係合穴22aにそれぞれ係合させる。
 これにより、図2に示すリクライニング装置20が完成する。
Then, in order to connect the first frame 21 connected to the seat frame 11 a and the external gear 23, the protrusions 23 f are engaged with the engagement holes 21 a of the first frame 21, respectively. Further, in order to connect the second frame 22 connected to the back frame 12 a and the internal gear 24, both the protruding portions 24 d and both protrusions 24 e with which the lid member 30 is engaged are connected to the engagement holes 22 a of the second frame 22. Are engaged with each other.
Thereby, the reclining device 20 shown in FIG. 2 is completed.
 次に、リクライニング装置20における両歯車23,24の相対回転の規制について説明する。
 シートバック12をシートクッション11に対して傾動させるために上記操作レバーの操作に応じて回転軸25が回転駆動するとき、この回転軸25の回転駆動に応じて外歯車23および内歯車24が相対回転し、シートバック12がシートクッション11に対して傾動する。
Next, the restriction | limiting of the relative rotation of both the gears 23 and 24 in the reclining apparatus 20 is demonstrated.
When the rotary shaft 25 is rotationally driven in response to the operation of the operation lever to tilt the seat back 12 with respect to the seat cushion 11, the external gear 23 and the internal gear 24 are relative to each other according to the rotational drive of the rotary shaft 25. The seat back 12 tilts with respect to the seat cushion 11 by rotating.
 そして、両歯車23,24が上述した所定の相対回転位置に相当する位置まで相対回転すると、内歯車24の両凹部24fにそれぞれ挿入されている外歯車23の両凸部23eが当該凹部24fの側壁にそれぞれ当接するため、当該相対回転が規制されることとなる。 When the gears 23 and 24 are relatively rotated to a position corresponding to the above-described predetermined relative rotation position, the both convex portions 23e of the external gear 23 inserted into the both concave portions 24f of the internal gear 24 are formed in the concave portions 24f. Since each abuts against the side wall, the relative rotation is restricted.
 このように、両凸部23eと両凹部24fがそれぞれ当接することで両歯車23,24の相対回転が規制されるので、1つずつ設けた凸部および凹部が当接する場合と比較して、凸部23eおよび凹部24fの当接時の衝撃が分散されて両歯車23,24に作用する負荷が低減される。 In this way, since the relative rotation of both gears 23 and 24 is restricted by the contact between both convex portions 23e and both concave portions 24f, compared to the case where the convex portions and the concave portions provided one by one are in contact, The impact at the time of contact of the convex portion 23e and the concave portion 24f is dispersed, and the load acting on both the gears 23 and 24 is reduced.
 以上説明したように、本実施形態に係るリクライニング装置20では、外歯車23には他側面23cから突出する凸部23eが設けられている。内歯車24には他側面24cに円弧状の2つの突出部24dが設けられており、両突出部24dが第2フレーム22に係合することにより当該内歯車24が第2フレーム22に連結される。そして、内歯車24の一側面24bには、両突出部24dに対向する部位にて当該突出部24dの突出量に応じて円弧状に凹む2つの凹部24fが設けられており、両凹部24fは、外歯23aおよび内歯24aが噛合するとき凸部23eがそれぞれ挿入し、外歯車23および内歯車24が相対回転するとき所定の相対回転位置で凸部23eにそれぞれ当接することで両歯車23,24の相対回転を一定範囲内に規制するように形成される。 As described above, in the reclining device 20 according to the present embodiment, the external gear 23 is provided with the convex portion 23e protruding from the other side surface 23c. The internal gear 24 is provided with two arc-shaped protrusions 24 d on the other side surface 24 c, and the internal gear 24 is connected to the second frame 22 by engaging both the protrusions 24 d with the second frame 22. The The one side surface 24b of the internal gear 24 is provided with two concave portions 24f that are recessed in an arc shape in accordance with the protruding amount of the protruding portion 24d at a portion facing both the protruding portions 24d. When the external teeth 23a and the internal teeth 24a mesh with each other, the convex portions 23e are inserted, and when the external gear 23 and the internal gear 24 rotate relative to each other, they come into contact with the convex portions 23e at predetermined relative rotational positions, whereby both gears 23 , 24 is regulated so as to restrict the relative rotation within a certain range.
 これにより、内歯車24において、他側面24cの両突出部24dは当該内歯車24を第2フレーム22に係合するための係合部材として機能し、一側面24bの両凹部24fは上記所定の相対回転位置で外歯車23の両凸部23eに当接して両歯車23,24の相対回転を規制する規制部材として機能し得る。このように、係合部材として突出する両突出部24dの突出量に応じて規制部材としての両凹部24fの凹み量が設定されることにより、上述したような内歯車の凸部と外歯車の凹部の側壁とを当接させることで両歯車の相対回転を規制するための空間を両歯車間に設ける必要がないので、噛合時における外歯車23の他側面23cと内歯車24の他側面24cとの軸方向の離間距離が小さくなり、当該リクライニング装置20の軸方向の厚みを薄くすることができる。 Thereby, in the internal gear 24, both projecting portions 24d on the other side surface 24c function as engaging members for engaging the internal gear 24 with the second frame 22, and both concave portions 24f on the one side surface 24b It can function as a regulating member that abuts against both convex portions 23e of the external gear 23 at the relative rotational position and regulates the relative rotation of the gears 23 and 24. Thus, by setting the amount of depression of both recesses 24f as the restricting member according to the amount of protrusion of both protrusions 24d protruding as the engaging member, the convex portions of the internal gear and the external gear as described above are set. Since it is not necessary to provide a space for restricting the relative rotation of both gears by contacting the side walls of the recesses, the other side surface 23c of the outer gear 23 and the other side surface 24c of the inner gear 24 at the time of meshing. And the axial distance of the reclining device 20 can be reduced.
 また、本実施形態に係るリクライニング装置20では、外歯車23には、その回転中心を基準に上記凸部23eが対称に2つ設けられ、内歯車24には、上記所定の相対回転位置に応じて両凸部23eに当接する上記凹部24fが2つ一側面24bに設けられるとともにこれら両凹部24fにそれぞれ対向する他側面24cの部位に上記突出部24dが2つ設けられている。 Further, in the reclining device 20 according to the present embodiment, the external gear 23 is provided with the two convex portions 23e symmetrically with respect to the rotation center thereof, and the internal gear 24 is provided in accordance with the predetermined relative rotational position. In addition, two concave portions 24f that come into contact with both convex portions 23e are provided on one side surface 24b, and two protruding portions 24d are provided on portions of the other side surface 24c that face both the concave portions 24f.
 これにより、2つの凸部23eと2つの凹部24fがそれぞれ当接することで両歯車23,24の相対回転が規制されるので、凸部23eおよび凹部24fの当接時の衝撃が分散されて両歯車23,24に作用する負荷を低減することができる。特に、両凸部23eおよび両凹部24fは、回転中心を基準に対称に形成されることとなるため、両歯車23,24の組付け作業に関する作業ミスをなくすだけでなく、歯車製造時の熱処理歪み等の影響が少なくなるので、両凸部および両凹部が非対称に製造される場合と比較して、当該リクライニング装置20の製造コストを低減することができる。 As a result, the relative rotation of the two gears 23 and 24 is restricted by the two convex portions 23e and the two concave portions 24f coming into contact with each other, so that the impact when the convex portions 23e and the concave portions 24f are brought into contact is dispersed. The load acting on the gears 23 and 24 can be reduced. In particular, both the convex portions 23e and both concave portions 24f are formed symmetrically with respect to the center of rotation, so that not only work errors related to the assembly work of both gears 23 and 24 are eliminated, but also heat treatment during gear manufacturing. Since the influence of distortion or the like is reduced, the manufacturing cost of the reclining device 20 can be reduced as compared with the case where both the convex portions and the both concave portions are manufactured asymmetrically.
 なお、本発明は上記実施形態に限定されるものではなく、以下のように具体化してもよく、その場合でも、上記実施形態と同等の作用・効果が得られる。
(1)外歯車23の凸部23eと内歯車24の突出部24dおよび凹部24fとはそれぞれ2つ回転中心を基準に対称に設けられることに限らず、回転中心を基準にそれぞれ3つ以上対称に設けられてもよい。また、両歯車23,24の相対回転規制時の負荷が小さい場合には、外歯車23の凸部23eと内歯車24の突出部24dおよび凹部24fとを1つずつ設けるようにしてもよい。
In addition, this invention is not limited to the said embodiment, You may actualize as follows, and even in that case, the effect | action and effect equivalent to the said embodiment are acquired.
(1) The protrusions 23e of the external gear 23 and the protrusions 24d and the recesses 24f of the internal gear 24 are not limited to be provided symmetrically with respect to the two rotation centers, but are more than three symmetrical with respect to the rotation center. May be provided. Further, when the load at the time of restricting the relative rotation of both gears 23 and 24 is small, the convex portion 23e of the external gear 23, the protruding portion 24d and the concave portion 24f of the internal gear 24 may be provided one by one.
(2)第1フレーム21および第2フレーム22は、座部フレーム11aおよび背部フレーム12aの一部であってもよい。 (2) The first frame 21 and the second frame 22 may be part of the seat frame 11a and the back frame 12a.
 本出願は、2009年4月27日に日本国に本出願人により出願された特願2009-107750号に基づくものであり、その全内容は参照により本出願に組み込まれる。さらに、本発明の背景技術として引用した特許第3946948号公報の全内容は、参照により本出願に組み込まれる。 This application is based on Japanese Patent Application No. 2009-107750 filed by the present applicant in Japan on April 27, 2009, the entire contents of which are incorporated into this application by reference. Furthermore, the entire content of Japanese Patent No. 3946948, cited as background art of the present invention, is incorporated into this application by reference.
 本発明の特定の実施の形態についての上記説明は、例示を目的として提示したものである。それらは、網羅的であったり、記載した形態そのままに本発明を制限したりすることを意図したものではない。数多くの変形や変更が、上記の記載内容に照らして可能であることは当業者に自明である。 The above description of specific embodiments of the present invention has been presented for purposes of illustration. They are not intended to be exhaustive or to limit the invention to the precise form described. It will be apparent to those skilled in the art that many modifications and variations are possible in light of the above description.
 本発明のリクライニング装置は、軸方向の厚みを薄くすることができるので、産業上有用である。 The reclining device of the present invention is industrially useful because it can reduce the axial thickness.
 10…車両用シート
 11…シートクッション
 12…シートバック
 20…リクライニング装置
 21…第1フレーム
 22…第2フレーム
 23…外歯車
 23a…外歯
 23b…一側面
 23c…他側面
 23e…凸部
 24…内歯車
 24a…内歯
 24b…一側面
 24c…他側面
 24d…突出部
 24f…凹部
 25…回転軸
DESCRIPTION OF SYMBOLS 10 ... Vehicle seat 11 ... Seat cushion 12 ... Seat back 20 ... Reclining device 21 ... 1st frame 22 ... 2nd frame 23 ... External gear 23a ... External tooth 23b ... One side surface 23c ... Other side surface 23e ... Convex part 24 ... Inside Gear 24a ... Inner teeth 24b ... One side surface 24c ... Other side surface 24d ... Protrusion 24f ... Concavity 25 ... Rotating shaft

Claims (2)

  1.  シートクッションに対してシートバックを傾動可能に保持するシートのリクライニング装置であって、
     シートクッションおよびシートバックのいずれか一方に固定される第1フレームと、
     シートクッションおよびシートバックの他方に固定される第2フレームと、
     前記第1フレームに連結されて外周面に外歯が形成される外歯車であって、前記第1フレームに連結される側とは反対側の側面から軸方向に突出する凸部が設けられる外歯車と、
     前記外歯に噛合可能であり当該外歯よりも歯数が多い内歯が形成される内歯車であって、前記内歯が形成される側の側面である一側面に対して対向する他側面から円弧状に突出する突出部にて前記第2フレームに係合することにより当該第2フレームに連結される内歯車と、
     前記外歯車に同軸的かつ回転自在に嵌合するとともに、前記外歯車および前記内歯車のいずれか一方を他方の歯車軸を中心に公転させる回転軸と、を備え、
     前記内歯車の前記一側面には、前記突出部に対向する部位にて当該突出部の突出量に応じて円弧状に凹む凹部が設けられており、
     前記凹部は、前記外歯および前記内歯が噛合するとき前記凸部が挿入し、前記外歯車および前記内歯車が相対回転するとき所定の相対回転位置で前記凸部に当接することで前記相対回転を一定範囲内に規制するように形成されているリクライニング装置。
    A seat reclining device that tiltably holds a seat back with respect to a seat cushion,
    A first frame fixed to either the seat cushion or the seat back;
    A second frame fixed to the other of the seat cushion and the seat back;
    An external gear that is connected to the first frame and has external teeth formed on an outer peripheral surface thereof, and is provided with a convex portion that protrudes in an axial direction from a side surface opposite to the side connected to the first frame. Gears,
    An internal gear in which internal teeth that can be meshed with the external teeth and have a larger number of teeth than the external teeth are formed, and opposite to the one side surface that is the side surface on which the internal teeth are formed An internal gear coupled to the second frame by engaging the second frame with a projecting portion projecting in an arc from
    A rotary shaft that is coaxially and rotatably fitted to the external gear and revolves around one of the external gear and the internal gear about the other gear shaft;
    The one side surface of the internal gear is provided with a recess that is recessed in an arc shape in accordance with the protrusion amount of the protrusion at a portion facing the protrusion.
    The concave portion is inserted into the convex portion when the external teeth and the internal gear mesh with each other, and contacts the convex portion at a predetermined relative rotational position when the external gear and the internal gear rotate relative to each other. A reclining device configured to restrict rotation within a certain range.
  2.  前記外歯車には、その回転中心を基準に前記凸部が対称に2つ設けられ、
     前記内歯車には、前記所定の相対回転位置に応じて前記両凸部に当接する前記凹部が2つ設けられるとともにこれら両凹部にそれぞれ対向する前記他側面の部位に前記突出部が2つ設けられている請求項1に記載のリクライニング装置。
    The external gear is provided with two convex portions symmetrically with respect to the rotation center thereof,
    The internal gear is provided with two concave portions that contact the convex portions according to the predetermined relative rotational position, and two protruding portions that are provided on the other side surface respectively facing the concave portions. The reclining device according to claim 1.
PCT/JP2010/061055 2010-06-29 2010-06-29 Seat reclining device for tiltably holding seat back WO2012001769A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2010/061055 WO2012001769A1 (en) 2010-06-29 2010-06-29 Seat reclining device for tiltably holding seat back

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2010/061055 WO2012001769A1 (en) 2010-06-29 2010-06-29 Seat reclining device for tiltably holding seat back

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WO2012001769A1 true WO2012001769A1 (en) 2012-01-05

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140162827A1 (en) * 2011-07-20 2014-06-12 C. Rob. Hammerstein Gmbh & Co. Kg Seat fitting for a motor vehicle seat
EP2823992A4 (en) * 2012-03-06 2015-12-02 Hyundai Dymos Inc Reclining apparatus for vehicle seat
DE102012111941B4 (en) 2012-12-07 2022-03-03 Keiper Seating Mechanisms Co., Ltd. Seat fitting for a motor vehicle seat

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6322144U (en) * 1986-07-29 1988-02-13
JP3946948B2 (en) * 2000-10-06 2007-07-18 シロキ工業株式会社 Reclining device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6322144U (en) * 1986-07-29 1988-02-13
JP3946948B2 (en) * 2000-10-06 2007-07-18 シロキ工業株式会社 Reclining device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140162827A1 (en) * 2011-07-20 2014-06-12 C. Rob. Hammerstein Gmbh & Co. Kg Seat fitting for a motor vehicle seat
US9315122B2 (en) * 2011-07-20 2016-04-19 Johnson Controls Metals and Mechanisms GmbH & Co. Seat fitting for a motor vehicle seat
EP2823992A4 (en) * 2012-03-06 2015-12-02 Hyundai Dymos Inc Reclining apparatus for vehicle seat
US9381833B2 (en) 2012-03-06 2016-07-05 Hyundai Dymos Incorporated Reclining apparatus for vehicle seat
DE102012111941B4 (en) 2012-12-07 2022-03-03 Keiper Seating Mechanisms Co., Ltd. Seat fitting for a motor vehicle seat

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