JP2006340874A - Seat reclining device for vehicle - Google Patents

Seat reclining device for vehicle Download PDF

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Publication number
JP2006340874A
JP2006340874A JP2005168950A JP2005168950A JP2006340874A JP 2006340874 A JP2006340874 A JP 2006340874A JP 2005168950 A JP2005168950 A JP 2005168950A JP 2005168950 A JP2005168950 A JP 2005168950A JP 2006340874 A JP2006340874 A JP 2006340874A
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gear
base plate
external gear
external
internal
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JP4667126B2 (en
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Tadashi Matsumoto
正 松本
Mitsuo Narasaki
光生 楢崎
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Jtekt Column Systems Corp
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Fuji Kiko Co Ltd
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Priority to JP2005168950A priority Critical patent/JP4667126B2/en
Priority to EP06011514A priority patent/EP1731353B1/en
Priority to US11/448,732 priority patent/US7354108B2/en
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Abstract

<P>PROBLEM TO BE SOLVED: To prevent the lowering of the strength by preventing a decrease in an engagement width between an external gear and an internal gear and to prevent enlargement of a width-directional clearance due to insufficiency of the press-fitting when press-fitting a base plate and the external gear in a round type recliner. <P>SOLUTION: This seat reclining device is provided with a holder ring 50 superposing the internal gear 20, the external gear 10 and a base plate 30 and clampingly supporting their outer circumferential parts. The base plate 30 is formed with internal teeth fitted with external teeth 14 of the external gear 10 in a circular recessed part formed into a half-hollowed shape, and the circular recessed bottom is formed with a projection part 36 projecting to the side of the external gear 10. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明は車両用シートリクライニング装置に関するもので、特に、少歯数差内歯車方式の機構部を円形状に形成したラウンドタイプのリクライナーを有するものに関する。   The present invention relates to a vehicular seat reclining device, and more particularly to a vehicular seat reclining device having a round type recliner in which a small gear difference internal gear type mechanism is formed in a circular shape.

ラウンドタイプのリクライナーは、下記特許文献１及び２に見られるように、シートクッション側取付アームに固定する円形突出部を有するベースプレートと、内歯とシートバック側取付アームに固定する円形突出部とを有する内歯ギヤと、前記ベースプレートに固定されるとともに、内歯ギヤの内歯と噛合する歯数が内歯より１歯又は２歯少ない外歯とを有する外歯ギヤと、外歯ギヤと内歯ギヤを偏心した状態に支持するとともに、外歯ギヤに対して内歯ギヤを偏心駆動するカム手段と、内歯ギヤ、外歯ギヤ及びベースプレートを重ね合わせてその外周部を挟むように保持するホルダーリング５とにより構成されている。   As can be seen in Patent Documents 1 and 2 below, the round type recliner includes a base plate having a circular protrusion that is fixed to the seat cushion side mounting arm, and an inner tooth and a circular protrusion that is fixed to the seat back side mounting arm. An external gear having an internal gear, an external gear fixed to the base plate, and having 1 or 2 teeth less than the internal gear, and the external gear and the internal gear. The teeth gear is supported in an eccentric state, and the cam means for driving the inner gear eccentrically with respect to the outer gear, and the inner gear, the outer gear and the base plate are overlapped and held so as to sandwich the outer peripheral portion. It is constituted by a holder ring 5.

ベースプレートの円形突出部の外側にはエンボス突起が、また、内歯ギヤの円形突出部の外側にはエンボス突起がそれぞれ形成されており、エンボス突起は図示外のシートクッション側取付アームに、また、エンボス突起は同様に図示外のシートバック側取付アームに、それぞれ対応して穿設された透孔に嵌合して溶接等で固定される。
特開２０００−１６６６７９ 仏追加特許ＦＲ−Ａ−２７５９３３３ 特開２００４−２２９９５１ Emboss protrusions are formed on the outer side of the circular protrusion of the base plate, and emboss protrusions are formed on the outer side of the circular protrusion of the internal gear.The emboss protrusion is formed on the seat cushion side mounting arm (not shown), and Similarly, the embossing protrusions are fitted to through-holes drilled correspondingly to seatback side mounting arms (not shown) and fixed by welding or the like.
JP 2000-166679 A French additional patent FR-A-2759333 JP2004-229951

上述のように、ラウンドタイプのリクライナーは、ベースプレートと内歯ギヤとの間に外歯ギヤを挟んだサンドイッチ構造であって、ベースプレートに外歯ギヤを圧入固定しているが、幅方向寸法のバラツキを吸収するようにベースプレートと外歯ギヤとの間に一定の隙間を設けている。   As described above, the round type recliner has a sandwich structure in which an external gear is sandwiched between a base plate and an internal gear, and the external gear is press-fitted and fixed to the base plate. A certain gap is provided between the base plate and the external gear so as to absorb the noise.

そして、リクライナーに過大な荷重が負荷された場合には、外歯ギヤが幅方向へ隙間分逃げる動きをする可能性があるので、外歯ギヤと内歯ギヤとの噛み合い代が低減することとなって、強度が低下する惧れがある。   When an excessive load is applied to the recliner, there is a possibility that the external gear may move away by a gap in the width direction, so that the meshing margin between the external gear and the internal gear is reduced. As a result, the strength may decrease.

また、特許文献１又は２の構造に、特許文献３のような、くさび式ガタ押え構造を設ける場合には、内歯ギヤと外歯ギヤを噛み合わせた状態で一対のくさび部材とスプリング及びセンターシャフトを組み付け、この後、外歯ギヤにベースプレートを圧入固定する必要がある。そのため、ベースプレートと外歯ギヤを圧入固定する際に、圧入が不充分となって幅方向の隙間が大きくなるおそれがある。   Further, in the case of providing a wedge-type backlash holding structure as in Patent Document 3 in the structure of Patent Document 1 or 2, a pair of wedge members, a spring, and a center in a state where the internal gear and the external gear are engaged with each other. After assembling the shaft, it is necessary to press-fit and fix the base plate to the external gear. For this reason, when the base plate and the external gear are press-fitted and fixed, the press-fitting may be insufficient, and the gap in the width direction may be increased.

そこで、この発明は上記課題を解決するため、請求項１によれば、シートクッション側取付アームに固定する円形突出部を有するベースプレートと、半抜き状に形成した円形凹部の内周面に形成した内歯とシートバック側取付アームに固定する円形突出部とを有する内歯ギヤと、前記ベースプレートにに固定されるとともに内歯ギヤの内歯より歯数が１歯又は２歯少ない外歯とを有する外歯ギヤと、内歯ギヤを外歯ギヤに対して偏心駆動する偏心駆動手段と、前記内歯ギヤ、外歯ギヤ及びベースプレートを重ね合わせてその外周部を挟むように支持するホルダーリングとを備えたシートリクライニング装置において、
前記ベースプレートには半抜き状に形成した円形凹部の内周面に前記外歯ギヤの外歯が圧入される内歯を形成するとともに、円形凹部の底面に外歯ギヤ側へ突出する凸部を形成したことを特徴とする車両用シートリクライニング装置を構成した。 Accordingly, in order to solve the above problems, the present invention is formed on the inner peripheral surface of a base plate having a circular protrusion fixed to the seat cushion side mounting arm and a circular recess formed in a half-cut shape. An internal gear having an internal tooth and a circular protrusion fixed to the seat back side mounting arm, and an external tooth fixed to the base plate and having one or two teeth less than the internal tooth of the internal gear. An external gear, an eccentric drive means for driving the internal gear eccentrically with respect to the external gear, and a holder ring that supports the internal gear, the external gear, and the base plate so as to sandwich the outer peripheral portion of the internal gear. In the seat reclining device with
The base plate is formed with inner teeth into which the external teeth of the external gear are press-fitted on the inner peripheral surface of a circular recess formed in a half-punch shape, and a convex portion protruding toward the external gear is formed on the bottom surface of the circular recess. A vehicle seat reclining device characterized by being formed was configured.

リクライナーに過大な荷重が負荷された場合には、凸部が外歯ギヤの幅方向へ逃げる動きを阻止し、外歯ギヤと内歯ギヤとの噛み合い代が低減することは無くなり、したがって、強度の低下を阻止することができる。また、凸部をエンボス加工したから、歯部根元部に面取りをすることができ、応力集中の緩和及び型寿命が向上する。   When an excessive load is applied to the recliner, the convex portion prevents the external gear from escaping in the width direction, and the meshing margin between the external gear and the internal gear is not reduced. Can be prevented. Further, since the convex portion is embossed, the root portion of the tooth portion can be chamfered, and the stress concentration is alleviated and the mold life is improved.

本発明の実施の形態に係るシートリクライニング装置について図面を用いて説明する。図１にシートリクライニング装置機構部の分解斜視図を、図２にシートリクライニング装置の外観図を、図３にベースプレートの部品内面図を、図４に図２のＡ−Ａ断面図を、図５に図２からベースプレートを外した図を示す。図中、１０は装置機構部の外周に外歯を有する外歯ギヤ、２０はシートバック側取付アーム７０に固定される内歯ギヤ、３０はシートクッション側取付アーム６０に固定されるベースプレート、４０はセンターシャフト４１、ロックプレート４６、ロックスプリング４７からなる偏心駆動手段、５０は重ねられた内歯ギヤ２０、外歯ギヤ１０、ベースプレート３０の外周を取囲むホルダーリングである。   A seat reclining device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of the seat reclining device mechanism, FIG. 2 is an external view of the seat reclining device, FIG. 3 is an internal view of the components of the base plate, FIG. 4 is a cross-sectional view taken along line AA of FIG. The figure which removed the baseplate from FIG. 2 is shown. In the figure, 10 is an external gear having external teeth on the outer periphery of the device mechanism portion, 20 is an internal gear fixed to the seat back side mounting arm 70, 30 is a base plate fixed to the seat cushion side mounting arm 60, 40 Is an eccentric drive means comprising a center shaft 41, a lock plate 46, and a lock spring 47, and 50 is a holder ring surrounding the outer periphery of the stacked internal gear 20, external gear 10, and base plate 30.

上記外歯ギヤ１０は、リング状を有し、外歯１４が全周に形成された外周面とメタルベアリング１５が圧入された内周面と、外周面と内周面との間の側面１３とからなる。   The external gear 10 has a ring shape, an outer peripheral surface on which outer teeth 14 are formed on the entire circumference, an inner peripheral surface in which a metal bearing 15 is press-fitted, and a side surface 13 between the outer peripheral surface and the inner peripheral surface. It consists of.

上記内歯ギヤ２０は、円板を同一中心で半抜きした円形凹部を有し、ベースプレート３０より大きな外径の外周部２１と、円形凹部の内周面に内歯を形成する歯形部２２と、円形凹部の反対側に突出した外側突出部２３とからなり、この内歯ギヤ２０の歯数より外歯ギア１０の歯数は１歯又は２歯少なく形成されている。したがって、外歯ギア１０の歯部外径は内歯ギア２０の歯部外径より小さくなっている。外側突出部２３にはシートバック側取付アーム６０の取付孔６１に嵌合する６個のエンボス２４が形成され、中心部にはセンターシャフト４１の軸４２を回転可能に支持する円形凹部の内側に突出するボス２５を有する。このボス２５はシートバック側取付アーム６０の取付孔６１の中心部に形成した中心孔６２と中心を合致する。   The internal gear 20 has a circular concave portion obtained by half-cutting a disk at the same center, an outer peripheral portion 21 having an outer diameter larger than that of the base plate 30, and a tooth profile portion 22 that forms internal teeth on the inner peripheral surface of the circular concave portion. The outer protrusion 23 protrudes on the opposite side of the circular recess, and the number of teeth of the external gear 10 is one or two less than the number of teeth of the internal gear 20. Therefore, the tooth part outer diameter of the external gear 10 is smaller than the tooth part outer diameter of the internal gear 20. The outer protrusion 23 is formed with six embosses 24 that fit into the mounting holes 61 of the seat back side mounting arm 60, and in the center of the circular recess that rotatably supports the shaft 42 of the center shaft 41. It has a protruding boss 25. The boss 25 is aligned with the center hole 62 formed at the center of the mounting hole 61 of the seat back side mounting arm 60.

上記ベースプレート３０は円板を同一中心で半抜きした円形凹部を有し、内歯ギヤ２０よりも少し小さい外径の外周部３１と円形凹部の内周面に内歯を形成する歯形部３８と、円形凹部の反対側に突出した円形突出部３３とからなり、円形突出部３３にはシートクッション側取付アーム７０の取付孔７１に嵌合するエンボス３４が形成され、かつ、中心部にはシートクッション側取付アームの中心孔７２と合致する中心孔３５が穿設されている。円形突出部３３の反対側の円形凹部の底面３９には、図２、図３及び図４に示すように、外歯ギヤ１０に向け突出して側面１３に接触可能な凸部３６が形成されている。   The base plate 30 has a circular concave portion obtained by half-cutting the disc at the same center, an outer peripheral portion 31 having an outer diameter slightly smaller than the internal gear 20, and a tooth profile portion 38 that forms internal teeth on the inner peripheral surface of the circular concave portion. The circular protrusion 33 protrudes to the opposite side of the circular recess, and the circular protrusion 33 is formed with an emboss 34 that fits into the mounting hole 71 of the seat cushion side mounting arm 70, and the seat at the center. A center hole 35 that matches the center hole 72 of the cushion side mounting arm is formed. On the bottom surface 39 of the circular recess opposite to the circular protrusion 33, a convex portion 36 that protrudes toward the external gear 10 and can contact the side surface 13 is formed as shown in FIGS. 2, 3, and 4. Yes.

この凸部３６は円形突出部３３から周方向に半抜き形成した略六角形状の第２突出部３３ａの頂点を結ぶ辺の部分に６個形成されている。また、エンボス３４はこの第２突出部３３ａの六角形の頂点の部分にそれぞれ形成される。この凸部３６は円形凹部の底面３９と歯形部３８の間に形成される面取りよりも高く形成される。   Six convex portions 36 are formed on the side connecting the vertices of the substantially hexagonal second projecting portion 33a that is half-cut from the circular projecting portion 33 in the circumferential direction. Further, the emboss 34 is formed at each of the hexagonal apexes of the second protrusion 33a. The convex portion 36 is formed higher than the chamfer formed between the bottom surface 39 of the circular concave portion and the tooth profile portion 38.

外歯ギヤ１０は、内歯ギヤ２０の円形凹部の深さと、ベースプレート３０の円形凹部の深さを加算した幅よりも少し薄い厚さに形成されている。これは、内歯ギヤ２０、外歯ギヤ１０及びベースプレート３０を重ねた際に内歯ギヤ２０の外歯部２１とベースプレート３０の外周部３１の間に隙間が空かないようにするためである。   The external gear 10 is formed to have a thickness slightly smaller than the width obtained by adding the depth of the circular recess of the internal gear 20 and the depth of the circular recess of the base plate 30. This is to prevent a gap from being formed between the external tooth portion 21 of the internal gear 20 and the outer peripheral portion 31 of the base plate 30 when the internal gear 20, the external gear 10, and the base plate 30 are overlapped.

すなわち、外歯ギヤ１０の外歯１４とベースプレート３０の歯形部３８との圧入は、偏心駆動手段４０を組み付けた後になるため、外歯ギヤ１０の一方の側面１３とベースプレート３０の底面との間に隙間が空いてしまうが、凸部３６を設けることで隙間を小さくすることができる。また、凸部３６を設けることで、ベースプレート３０の歯形部３８と底面３９との間に面取りを設けることができ、応力集中を緩和し、ベースプレートの強度の向上や型寿命が向上する。   That is, the press-fitting between the external teeth 14 of the external gear 10 and the tooth profile 38 of the base plate 30 is performed after the eccentric drive means 40 is assembled, and therefore, between the one side surface 13 of the external gear 10 and the bottom surface of the base plate 30. However, by providing the convex portion 36, the gap can be reduced. Further, by providing the convex portion 36, it is possible to provide a chamfer between the tooth profile portion 38 and the bottom surface 39 of the base plate 30, thereby relaxing stress concentration and improving the strength of the base plate and the mold life.

上記センターシャフト４１は、上記内歯ギヤ２０のボス２５の内周面に回動可能に嵌合する円筒状の軸４２及び軸４２の一端側で半径方向に延長してベースプレート３０の第２突出部３３ａの反対側内に位置するフランジ部４３と、内歯ギヤ２０のボス２５と外歯ギヤ１０の孔に圧入されたメタルベアリング１５との間の偏心空間に挿入される円弧状に形成された２つのくさび状のロックプレート４６の先端部４６ａにそれぞれ当接可能な２つの駆動突起４５と、フランジ部４３に形成された２つのロックプレート４６の反内歯ギヤ側面に当接してロックプレート４６の抜け方向への移動を阻止するロックプレート係止部４４と、スプライン付きの制御用シャフトが嵌合可能なスプライン付きの孔４１ａを有する。２つのロックプレート４６は偏心したボス２５の外周面と、メタルベアリング１５の内周面との間に形成される偏心空間の幅広部分にそれぞれ摺動可能に配置されており、このロックプレート４６を互いに離間する方向へ押圧することでボス２５とメタルベアリング１５の偏心、すなわち内歯ギヤ２０と外歯ギヤ１０の偏心が大きくなるように構成されている。   The center shaft 41 is a cylindrical shaft 42 that is rotatably fitted to the inner peripheral surface of the boss 25 of the internal gear 20, and extends in the radial direction on one end side of the shaft 42. It is formed in a circular arc shape that is inserted into an eccentric space between the flange portion 43 located on the opposite side of the portion 33a, and the boss 25 of the internal gear 20 and the metal bearing 15 press-fitted into the hole of the external gear 10. The two drive projections 45 that can be brought into contact with the tip portions 46a of the two wedge-shaped lock plates 46, and the lock plates that come into contact with the side surfaces of the two internal locking gears 46 formed on the flange portion 43, respectively. It has a lock plate locking portion 44 that prevents the movement of 46 in the pulling direction, and a splined hole 41a into which a control shaft with a spline can be fitted. The two lock plates 46 are slidably disposed in the wide portion of the eccentric space formed between the outer peripheral surface of the eccentric boss 25 and the inner peripheral surface of the metal bearing 15. By pressing in directions away from each other, the eccentricity of the boss 25 and the metal bearing 15, that is, the eccentricity of the internal gear 20 and the external gear 10 is increased.

４７は２つのロックプレート４６を離間する方向に付勢する円弧状のロックスプリングで、両端部４７ａが略直角に折り曲げられて上記２つのロックプレート４６の後端部４６ｂと係合するとともに、ベースプレート３０の第２突出部３３ａの反対側凹部内に配置され、２つのロックプレート４６を互いに離間する方向へ付勢している。   Reference numeral 47 denotes an arc-shaped lock spring that urges the two lock plates 46 away from each other. Both end portions 47a are bent at substantially right angles to engage the rear end portions 46b of the two lock plates 46, and the base plate It arrange | positions in the other side recessed part of 30 2nd protrusion part 33a, and is urging | biasing the two lock plates 46 in the direction which mutually spaces apart.

上記ホルダーリング５０は内歯ギヤ２０の外周部２１の外周に覆うように固定された内歯ギヤ保持部５１と、この内歯ギヤ保持部５１の一端側を略階段状に延長して形成され、ベースプレート３０の外周部３１の軸方向への移動を阻止するベースプレート保持部５２とを有する。   The holder ring 50 is formed by extending an inner gear holding portion 51 fixed so as to cover the outer periphery of the outer peripheral portion 21 of the internal gear 20 and one end side of the internal gear holding portion 51 in a substantially step shape. And a base plate holding part 52 for preventing the outer peripheral part 31 of the base plate 30 from moving in the axial direction.

この装置機構部は、ベースプレート３０の円形突出部３３をシートクッション側取付アーム６０に固定すると共に、内歯ギヤ２０の外側突出部２３をシートバック側取付アーム７０に固定し、センターシャフト４１をモータユニットの駆動軸等で駆動する。外歯ギヤ１０の歯数は内歯ギア２０の歯数より1歯又は２歯少なく形成され、外歯ギア１０の歯部外径は内歯ギア２０の歯部外径より小さくなっているので、内歯２２と外歯１４を噛み合わせるには、内歯ギア２０と外歯ギア１０の中心を偏心して配置することになり、この偏心位置を円周方向にずらすことで、内歯２２と外歯１４の噛み合い位置がずれていき、噛み合い位置のずれが１回転すると歯数差分だけ角度がずれる。   This device mechanism unit fixes the circular protrusion 33 of the base plate 30 to the seat cushion side mounting arm 60, fixes the outer protrusion 23 of the internal gear 20 to the seat back side mounting arm 70, and fixes the center shaft 41 to the motor. It is driven by the drive shaft of the unit. The number of teeth of the external gear 10 is one or two less than the number of teeth of the internal gear 20, and the tooth outer diameter of the external gear 10 is smaller than the tooth outer diameter of the internal gear 20. In order to mesh the internal teeth 22 and the external teeth 14, the centers of the internal gear 20 and the external gear 10 are arranged eccentrically, and by shifting the eccentric position in the circumferential direction, When the meshing position of the external teeth 14 shifts and the meshing position shifts once, the angle shifts by the difference in the number of teeth.

噛み合い位置の移動はセンターシャフト４１により駆動されるロックプレート４６の移動で行なわれる。すなわち、ロックプレート４６が内歯ギヤ２０のボス２５と外歯ギヤ１０の中心部に設けられたメタルベアリング１５との間に一対で配置され、ロックスプリング４７の両端部４７ａでくさびを食い込ませるように付勢されているので、内歯ギヤ２０の中心は外歯ギヤ１０の中心に対し偏心する。センターシャフト４１を駆動すると、一方の駆動突起４５で一方のロックプレート４６が駆動され移動すると共にロックスプリング４７を介して他方のロックプレート４６も駆動され移動する。   The meshing position is moved by moving the lock plate 46 driven by the center shaft 41. That is, a pair of lock plates 46 are arranged between the boss 25 of the internal gear 20 and the metal bearing 15 provided at the center of the external gear 10 so that the wedges are bitten by the both ends 47 a of the lock spring 47. The center of the internal gear 20 is eccentric with respect to the center of the external gear 10. When the center shaft 41 is driven, one lock projection 46 is driven and moved by one drive protrusion 45, and the other lock plate 46 is also driven and moved via a lock spring 47.

この２つのロックプレート４６の移動により偏心位置が円周方向にずれていく。このずれにより内歯２２と外歯１４の噛み合いがずれていき、センターシャフト４１の１回転で内歯ギヤ２０は歯数差分だけ角度がずれる。よってセンターシャフト４１を回転させることにより、外歯ギヤ２０に固定されたシートバック側取付アーム７０の角度を調節することができる。   The eccentric position shifts in the circumferential direction by the movement of the two lock plates 46. Due to this shift, the meshing between the internal teeth 22 and the external teeth 14 shifts, and the internal gear 20 is shifted in angle by the difference in the number of teeth by one rotation of the center shaft 41. Therefore, by rotating the center shaft 41, the angle of the seat back side mounting arm 70 fixed to the external gear 20 can be adjusted.

センターシャフト４１の偏心はロックスプリング４７でロックプレート４６を内歯ギヤのボス２５と外歯ギヤのメタルベアリング１５との間にくさびを食い込ませるように付勢しているので、偏心量が増加し外歯と内歯間のがたがなくなる。また、センターシャフト４１に設けた駆動突起４５で一方のロックプレート４６を押すことで上記くさびが食い込まない状態で偏心位置がずれていくので、駆動はスムーズに行われる。尚、フランジ４３のロックプレート係止部４４は、２つのロックプレート４６がベースプレート３０側に外れないようにロックプレート４６の側面を覆うように設けられている。   The eccentricity of the center shaft 41 is increased by the lock spring 47 so that the lock plate 46 is urged so that a wedge is inserted between the boss 25 of the internal gear and the metal bearing 15 of the external gear. There is no rattling between the external and internal teeth. Further, by pushing one of the lock plates 46 with the driving projection 45 provided on the center shaft 41, the eccentric position shifts in a state where the wedge does not bite, so that the driving is performed smoothly. The lock plate locking portion 44 of the flange 43 is provided so as to cover the side surface of the lock plate 46 so that the two lock plates 46 do not come off to the base plate 30 side.

そして、リクライニング装置機構部分の組み立ては、内歯ギヤ２０の内歯２２に外歯ギヤ１０の外歯１４を噛み合わせるように、内歯ギヤ２０の円形凹部内に外歯ギヤ１０を配置し、次いで２つのロックプレート４６を内歯ギヤ２０のボス２５と外歯ギヤ１０のメタルベアリング１５との間の幅広側空間に配置する。次に、センターシャフト４１の駆動突起４５を内歯ギヤ２０のボス２５と外歯ギヤ１０のメタルベアリング１５との間の幅狭側空間に挿入するように、センターシャフト４１の軸４２をボス２５の内周面に挿入する。次に、ロックスプリング４７の両端部４７ａをフランジ４３を切り欠いた位置でロックプレート４６の後端部４６ｂ間に挿入して組み付ける。   And the assembly of the reclining device mechanism portion is arranged such that the external gear 10 is disposed in the circular recess of the internal gear 20 so that the external teeth 14 of the external gear 10 mesh with the internal teeth 22 of the internal gear 20, Next, the two lock plates 46 are arranged in the wide side space between the boss 25 of the internal gear 20 and the metal bearing 15 of the external gear 10. Next, the shaft 42 of the center shaft 41 is inserted into the boss 25 so that the drive protrusion 45 of the center shaft 41 is inserted into the narrow side space between the boss 25 of the internal gear 20 and the metal bearing 15 of the external gear 10. Insert into the inner peripheral surface. Next, both end portions 47a of the lock spring 47 are inserted and assembled between the rear end portions 46b of the lock plate 46 at positions where the flange 43 is cut out.

そして、この状態でベースプレート３０を内歯ギヤ２０の円形凹部に被せるようにして、外歯ギヤ１０の外歯１４にベースプレート３０の歯形部３８の内歯を圧入する。   In this state, the base plate 30 is put on the circular recess of the internal gear 20, and the internal teeth of the tooth profile portion 38 of the base plate 30 are press-fitted into the external teeth 14 of the external gear 10.

この時、ベースプレート３０の底面に凸部３６が形成されているため、外歯ギヤ１０の側面１３と凸部３６との間の隙間を小さくできる。   Since the convex part 36 is formed in the bottom face of the base plate 30 at this time, the clearance gap between the side surface 13 of the external gear 10 and the convex part 36 can be made small.

そして、最後にホルダーリング５０でベースプレート３０と内歯ギヤ２０の外周部分を保持して完成する。   Finally, the holder ring 50 holds the base plate 30 and the outer peripheral portion of the internal gear 20 to complete.

そして、リクライナーに過大な荷重が負荷された場合には、凸部３６により外歯ギヤ１０は幅方向へ逃げる動きをすることが出来ないから、外歯ギヤ１０と内歯ギヤ２０との噛み合い代が低減することは無くなり、したがって、強度の低下を防止できる。   When an excessive load is applied to the recliner, the external gear 10 cannot move in the width direction by the convex portion 36, so that the meshing margin between the external gear 10 and the internal gear 20 is not possible. Is not reduced, and therefore a decrease in strength can be prevented.

この発明を実施した車両用シートリクライニング装置機構部の分解斜視図である。It is a disassembled perspective view of the vehicle seat reclining device mechanism part which implemented this invention. ラウンドタイプのリクライナーのベースプレート側外観図である。It is a baseplate side external view of a round type recliner. ベースプレートの部品内面図である。It is a component inner surface figure of a base plate. 図２のＡ−Ａ断面図である。It is AA sectional drawing of FIG. 図２からベースプレートを外した図である。It is the figure which removed the base plate from FIG.

符号の説明Explanation of symbols

１０…外歯ギヤ
１３…側面
２０…内歯ギヤ
３０…ベースプレート
３６…凸部
４０…偏心駆動手段
４１…センターシャフト
４６…ロックプレート
４７…ロックスプリング
５０…ホルダーリング
６０…シートクッション側取付アーム
７０…シートバック側取付アーム
DESCRIPTION OF SYMBOLS 10 ... External gear 13 ... Side 20 ... Internal gear 30 ... Base plate 36 ... Convex part 40 ... Eccentric drive means 41 ... Center shaft 46 ... Lock plate 47 ... Lock spring 50 ... Holder ring 60 ... Seat cushion side mounting arm 70 ... Seat back mounting arm

Claims (1)

シートクッション側取付アームに固定する円形突出部を有するベースプレートと、半抜き状に形成した円形凹部の内周面に形成した内歯とシートバック側取付アームに固定する円形突出部とを有する内歯ギヤと、前記ベースプレートに固定されるとともに内歯ギヤの内歯より歯数が１歯又は２歯少ない外歯とを有する外歯ギヤと、内歯ギヤを外歯ギヤに対して偏心駆動する偏心駆動手段と、前記内歯ギヤ、外歯ギヤ及びベースプレートを重ね合わせてその外周部を挟むように支持するホルダーリングとを備えたシートリクライニング装置において、
前記ベースプレートには半抜き状に形成した円形凹部の内周面に前記外歯ギヤの外歯が圧入される内歯を形成するとともに、円形凹部の底面に外歯ギヤ側へ突出する凸部を形成したことを特徴とする車両用シートリクライニング装置。





















An internal tooth having a base plate having a circular protrusion to be fixed to the seat cushion side mounting arm, an internal tooth formed on the inner peripheral surface of the circular recess formed in a half-cut shape, and a circular protrusion to be fixed to the seat back side mounting arm An external gear having a gear, an external tooth fixed to the base plate and having one or two teeth less than the internal teeth of the internal gear, and an eccentric for driving the internal gear eccentrically with respect to the external gear In a seat reclining device comprising drive means and a holder ring that supports the internal gear, the external gear, and the base plate so as to sandwich the outer peripheral portion thereof,
The base plate is formed with inner teeth into which the external teeth of the external gear are press-fitted on the inner peripheral surface of a circular recess formed in a half-punch shape, and a convex portion protruding toward the external gear is formed on the bottom surface of the circular recess. A vehicle seat reclining device characterized by being formed.





















JP2005168950A 2005-06-09 2005-06-09 Vehicle seat reclining device Expired - Fee Related JP4667126B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2005168950A JP4667126B2 (en) 2005-06-09 2005-06-09 Vehicle seat reclining device
EP06011514A EP1731353B1 (en) 2005-06-09 2006-06-02 Seat reclining apparatus
US11/448,732 US7354108B2 (en) 2005-06-09 2006-06-08 Seat reclining apparatus

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100896412B1 (en) 2008-01-04 2009-05-08 주식회사 오스템 Seat reclining device
KR101382118B1 (en) 2013-07-03 2014-04-08 현대다이모스(주) Apparatus for reclining seat
KR20210121765A (en) * 2020-03-31 2021-10-08 주식회사다스 Concentric type continuous recliner

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JPS58157635A (en) * 1982-03-09 1983-09-19 Matsushita Electric Ind Co Ltd Reversal device
JPH0769108A (en) * 1993-06-11 1995-03-14 Bertrand Faure Automob Bfa Gap removing joint device used in car seat
JP2001087072A (en) * 1999-09-03 2001-04-03 Bertrand Faure Equip Sa Seat for vehicle provided with pivot mechanism
JP2003531707A (en) * 2000-05-03 2003-10-28 フアウレシア・アウトジッツェ・ゲゼルシヤフト・ミト・ベシユレンクテル・ハフツング・ウント・コンパニー・コマンデイトゲゼルシヤフト Tilt adjustment bracket for car seat backrest
JP2004229951A (en) * 2003-01-31 2004-08-19 Fuji Kiko Co Ltd Seat reclining device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58157635A (en) * 1982-03-09 1983-09-19 Matsushita Electric Ind Co Ltd Reversal device
JPH0769108A (en) * 1993-06-11 1995-03-14 Bertrand Faure Automob Bfa Gap removing joint device used in car seat
JP2001087072A (en) * 1999-09-03 2001-04-03 Bertrand Faure Equip Sa Seat for vehicle provided with pivot mechanism
JP2003531707A (en) * 2000-05-03 2003-10-28 フアウレシア・アウトジッツェ・ゲゼルシヤフト・ミト・ベシユレンクテル・ハフツング・ウント・コンパニー・コマンデイトゲゼルシヤフト Tilt adjustment bracket for car seat backrest
JP2004229951A (en) * 2003-01-31 2004-08-19 Fuji Kiko Co Ltd Seat reclining device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100896412B1 (en) 2008-01-04 2009-05-08 주식회사 오스템 Seat reclining device
KR101382118B1 (en) 2013-07-03 2014-04-08 현대다이모스(주) Apparatus for reclining seat
KR20210121765A (en) * 2020-03-31 2021-10-08 주식회사다스 Concentric type continuous recliner
KR102360583B1 (en) * 2020-03-31 2022-02-09 주식회사 다스 Concentric type continuous recliner

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