JP2006014999A - Vehicle seat reclining device - Google Patents

Vehicle seat reclining device Download PDF

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Publication number
JP2006014999A
JP2006014999A JP2004196994A JP2004196994A JP2006014999A JP 2006014999 A JP2006014999 A JP 2006014999A JP 2004196994 A JP2004196994 A JP 2004196994A JP 2004196994 A JP2004196994 A JP 2004196994A JP 2006014999 A JP2006014999 A JP 2006014999A
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welding
laser
gear
reclining device
vehicle seat
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JP2004196994A
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Japanese (ja)
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Kikuo Makase
喜久雄 任勢
Yoshio Okayama
良雄 岡山
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Futaba Industrial Co Ltd
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Futaba Industrial Co Ltd
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Priority to JP2004196994A priority Critical patent/JP2006014999A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle seat reclining device obtained by a process reducing thermal strain. <P>SOLUTION: A seat cushion 2 and a seat back 4 are swingably supported via a gear mechanism 6. The one gear of the gear mechanism 6 and a side of the seat cushion 2 and the other gear of the gear mechanism 6 and a side of the seat back 4 are laser-welded. In the laser welding, a loop is formed from a welding start point to a welding finish point and a laser beam is radiated along a welding route 28 not overlapping with the start point and the finish point. The loop welding route 28 forms an approximately C shape. A plurality of positions in the concentric circle are welded with the approximately C-shaped routes 28. The laser welding is conducted by remote laser welding guided along the welding route 28 through the reflection of the laser beam with a long focal point by a mirror. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、自動車等の車両において用いられ、シートバックの傾斜角を調整できる車両用シートリクライニング装置に関する。   The present invention relates to a vehicle seat reclining device that can be used in a vehicle such as an automobile and can adjust an inclination angle of a seat back.

従来より、特許文献１にあるように、シートクッションとシートバックとを歯車機構により揺動可能に連結し、シートバックの傾斜角度を調整するものが知られている。歯車機構によるシートクッションとシートバックとの連結は、特許文献２にあるように、シートクッションあるいはシートバックのフレームに形成した孔に、歯車機構の歯車に形成した突起を挿入し、この孔と突起とを溶接により溶着していた。
特開２００２−１１２８４８号公報 特開２００３−１４６１２１号公報 Conventionally, as disclosed in Patent Document 1, a seat cushion and a seat back are connected so as to be swingable by a gear mechanism, and an inclination angle of the seat back is adjusted. The coupling between the seat cushion and the seat back by the gear mechanism is, as described in Patent Document 2, a projection formed on the gear of the gear mechanism is inserted into a hole formed in the frame of the seat cushion or the seat back, and this hole and projection And were welded by welding.
JP 2002-112848 A JP 2003-146121 A

しかしながら、こうした従来のものでは、孔と突起とをアーク溶接により溶着していたので、熱影響が大きく、歯車に熱歪みが生じやすいという問題があった。
本発明の課題は、熱歪みの低減を図った車両用シートリクライニング装置を提供することにある。 However, in such conventional devices, since the holes and the protrusions are welded by arc welding, there is a problem that the thermal influence is large and the gears are likely to be thermally strained.
The subject of this invention is providing the seat reclining apparatus for vehicles which aimed at reduction of the thermal distortion.

かかる課題を達成すべく、本発明は課題を解決するため次の手段を取った。即ち、
シートクッションとシートバックとが歯車機構を介して揺動可能に支持された車両用シートリクライニング装置において、
前記歯車機構の一方の歯車と前記シートクッション側とを、また、前記歯車機構の他方の歯車と前記シートバック側とをレーザ溶接により溶着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がそれである。 In order to achieve this problem, the present invention has taken the following measures in order to solve the problem. That is,
In a vehicle seat reclining device in which a seat cushion and a seat back are swingably supported via a gear mechanism,
The vehicle seat reclining device is characterized in that one gear of the gear mechanism and the seat cushion side and the other gear of the gear mechanism and the seat back side are welded by laser welding.

前記レーザ溶接は、溶接開始点から溶接終了点に至るループ状で、かつ、溶接開始点と溶接終了点とは重ならない溶接軌跡に沿ってレーザビームを照射する溶接であってもよい。また、前記ループ状の前記溶接軌跡は、略Ｃ字状の溶接軌跡であってもよい。更に、同心円上の複数箇所を前記略Ｃ字状の溶接軌跡で溶接するようにしてもよい。前記レーザ溶接は、長焦点のレーザビームをミラーにより反射して前記溶接軌跡に沿って誘導するリモートレーザ溶接であってもよい。   The laser welding may be welding in which a laser beam is irradiated along a welding locus that is in a loop shape from a welding start point to a welding end point and does not overlap the welding start point and the welding end point. The loop-shaped welding locus may be a substantially C-shaped welding locus. Furthermore, a plurality of locations on concentric circles may be welded along the substantially C-shaped welding locus. The laser welding may be remote laser welding in which a long-focus laser beam is reflected by a mirror and guided along the welding locus.

本発明の車両用シートリクライニング装置は、レーザ溶接により溶着するので、熱歪みの低減を図ることができるという効果を奏する。   Since the vehicle seat reclining device of the present invention is welded by laser welding, there is an effect that thermal distortion can be reduced.

以下本発明を実施するための最良の形態を図面に基づいて詳細に説明する。
図３に示すように、１は車両用のシートで、シート１はシートクッション２とシートバック４とを備え、シートクッション２とシートバック４とが歯車機構６により揺動可能に支持されて、傾斜角度を調整可能に連結されている。 The best mode for carrying out the present invention will be described below in detail with reference to the drawings.
As shown in FIG. 3, reference numeral 1 denotes a vehicle seat, the seat 1 includes a seat cushion 2 and a seat back 4, and the seat cushion 2 and the seat back 4 are supported by a gear mechanism 6 so as to be swingable. It is connected so that the inclination angle can be adjusted.

歯車機構６は、図２に示すように、外歯歯車８と、外歯歯車８よりも歯数の多い内歯歯車１０とを備えた周知の構成のものである。外歯歯車８と内歯歯車１０とには、それぞれ側面に複数の突起１２が形成されている。本実施形態では、シートクッション２のロアアーム１４に穿設された貫通孔１６に外歯歯車８の突起１２が挿入されると共に、シートバック４のシートフレーム１８に穿設された貫通孔２０に内歯歯車１０の突起１２が挿入されている。   As shown in FIG. 2, the gear mechanism 6 has a known configuration including an external gear 8 and an internal gear 10 having more teeth than the external gear 8. A plurality of protrusions 12 are formed on the side surfaces of the external gear 8 and the internal gear 10. In the present embodiment, the protrusion 12 of the external gear 8 is inserted into the through hole 16 formed in the lower arm 14 of the seat cushion 2, and the inside of the through hole 20 formed in the seat frame 18 of the seat back 4. The protrusion 12 of the toothed gear 10 is inserted.

ロアアーム１４とシートフレーム１８とは、板厚が１〜１．８ｍｍの高張力鋼板をブレス加工して成形されており、共にアウトサイド部材１４ａ，１８ａとインサイド部材１４ｂ，１８ｂを重ね合わせて、一部が中空状となるように形成している。   The lower arm 14 and the seat frame 18 are formed by breathing a high-strength steel plate having a thickness of 1 to 1.8 mm. The part is formed to be hollow.

また、ロアアーム１４と外歯歯車８とがレーザ溶接により溶着されており、シートフレーム１８と内歯歯車１０とがレーザ溶接により溶着されている。レーザ溶接は、図１に示すシートフレーム１８と内歯歯車１０とのように、同心円上の複数箇所を略Ｃ字状の溶接軌跡２８により溶着されている。   The lower arm 14 and the external gear 8 are welded by laser welding, and the seat frame 18 and the internal gear 10 are welded by laser welding. In the laser welding, like the seat frame 18 and the internal gear 10 shown in FIG.

本実施形態では、レーザ溶接に、リモートレーザ溶接が用いられており、図４に示すように、溶接用レーザ発振器２２からは焦点距離が６００〜１０００ｍｍの長焦点のレーザビーム２４が発振され、ミラー２６に照射されたレーザビーム２４はシートフレーム１８あるいはロアアーム１４に誘導されるように構成されている。ミラー２６は角度を変更可能で、角度を変えることにより、レーザビーム２４の誘導方向を変えることができる。従って、レーザビーム２４の照射位置を平面上で移動させることができる。   In the present embodiment, remote laser welding is used for laser welding. As shown in FIG. 4, a laser beam 24 having a long focal length of 600 to 1000 mm is oscillated from a laser oscillator 22 for welding, and a mirror is used. The laser beam 24 applied to the laser beam 26 is configured to be guided to the seat frame 18 or the lower arm 14. The angle of the mirror 26 can be changed, and the guiding direction of the laser beam 24 can be changed by changing the angle. Therefore, the irradiation position of the laser beam 24 can be moved on the plane.

本実施形態では、レーザビーム２４による溶接開始点から溶接終了点に至る溶接軌跡２８は、図１に示すように、ループ状とし、かつ、溶接開始点と溶接終了点とが重ならない、略Ｃ字状としている。また、歯車機構６による揺動中心を中心とした同心円上に複数の略Ｃ字状の溶接軌跡２８が形成されるように溶接している。   In the present embodiment, the welding locus 28 from the welding start point to the welding end point by the laser beam 24 has a loop shape as shown in FIG. 1, and the welding start point and the welding end point do not overlap each other. It is shaped like a letter. Further, welding is performed so that a plurality of substantially C-shaped welding trajectories 28 are formed on concentric circles centering on the center of oscillation by the gear mechanism 6.

また、本実施形態では、ロアアーム１４とシートフレーム１８との、それぞれのアウトサイド部材１４ａ，１８ａとインサイド部材１４ｂ，１８ｂとを重ね合わせ、更に、外歯歯車８と内歯歯車１０とを重ねて、３枚重ねの重ね溶接を行っている。レーザ溶接はエネルギーの集中度が高く、３枚重ねの重ね溶接でも容易に行うことができる。尚、これに限らず、ロアアーム１４のアウトサイド部材１４ａと外歯歯車８とを重ね溶接、また、シートフレーム１８のインサイド部材１８ｂと内歯歯車１０とを重ね溶接する、２枚重ねの重ね溶接としても実施可能である。   In the present embodiment, the outer members 14a and 18a and the inside members 14b and 18b of the lower arm 14 and the seat frame 18 are overlapped, and the external gear 8 and the internal gear 10 are overlapped. Three-layer lap welding is performed. Laser welding has a high energy concentration and can be easily carried out by three-layer lap welding. However, the present invention is not limited to this. Two-layer lap welding in which the outside member 14a of the lower arm 14 and the external gear 8 are lap welded, and the inside member 18b of the seat frame 18 and the internal gear 10 are lap welded. Can also be implemented.

次に、前述した本実施形態の車両用シートリクライニング装置の作動について説明する。
シートクッション２とシートバック４とが歯車機構６により傾斜角度を調整することができる。また、ロアアーム１４と外歯歯車８とがレーザ溶接されており、シートフレーム１８と内歯歯車１０とがレーザ溶接されている。レーザ溶接により溶着されているので、エネルギーの集中度が高く、溶接による周囲への熱影響が小さく、熱歪みを低減できる。従って、外歯歯車８と内歯歯車１０との噛み合いに対する熱影響が小さく、傾斜角度を滑らかに調整することができる。 Next, the operation of the vehicle seat reclining device of the present embodiment described above will be described.
The inclination angle of the seat cushion 2 and the seat back 4 can be adjusted by the gear mechanism 6. The lower arm 14 and the external gear 8 are laser welded, and the seat frame 18 and the internal gear 10 are laser welded. Since it is welded by laser welding, the concentration of energy is high, the influence of heat on the surroundings by welding is small, and thermal distortion can be reduced. Therefore, the thermal influence on the meshing between the external gear 8 and the internal gear 10 is small, and the inclination angle can be adjusted smoothly.

以上本発明はこの様な実施形態に何等限定されるものではなく、本発明の要旨を逸脱しない範囲において種々なる態様で実施し得る。   The present invention is not limited to such embodiments as described above, and can be implemented in various modes without departing from the gist of the present invention.

本発明の一実施形態としての車両用シートリクライニング装置のシートフレームとロアアームとの拡大側面図である。1 is an enlarged side view of a seat frame and a lower arm of a vehicle seat reclining device as an embodiment of the present invention. 図１のＡＡ断面図である。It is AA sectional drawing of FIG. 本実施形態の車両用シートの側面図である。It is a side view of the vehicle seat of this embodiment. 本実施形態のレーザ溶接の説明図である。It is explanatory drawing of the laser welding of this embodiment.

符号の説明Explanation of symbols

１…シート ２…シートクッション
４…シートバック ６…歯車機構
８…外歯歯車 １０…内歯歯車
１２…突起 １４…ロアアーム
１８…シートフレーム
２２…溶接用レーザ発振器
２４…レーザビーム
２６…ミラー ２８…溶接軌跡 DESCRIPTION OF SYMBOLS 1 ... Seat 2 ... Seat cushion 4 ... Seat back 6 ... Gear mechanism 8 ... External gear 10 ... Internal gear 12 ... Protrusion 14 ... Lower arm 18 ... Seat frame 22 ... Laser oscillator 24 for welding 24 ... Laser beam 26 ... Mirror 28 ... Welding locus

Claims (5)

シートクッションとシートバックとが歯車機構を介して揺動可能に支持された車両用シートリクライニング装置において、
前記歯車機構の一方の歯車と前記シートクッション側とを、また、前記歯車機構の他方の歯車と前記シートバック側とをレーザ溶接により溶着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。 In a vehicle seat reclining device in which a seat cushion and a seat back are swingably supported via a gear mechanism,
A vehicle seat reclining device, wherein one gear of the gear mechanism and the seat cushion side are welded to each other and the other gear of the gear mechanism and the seat back side are welded by laser welding. 前記レーザ溶接は、溶接開始点から溶接終了点に至るループ状で、かつ、溶接開始点と溶接終了点とは重ならない溶接軌跡に沿ってレーザビームを照射する溶接であることを特徴とする請求項１に記載の車両用シートリクライニング装置。 The laser welding is welding that irradiates a laser beam along a welding locus that is in a loop shape from a welding start point to a welding end point and that does not overlap the welding start point and the welding end point. Item 12. The vehicle seat reclining device according to Item 1. 前記ループ状の前記溶接軌跡は、略Ｃ字状の溶接軌跡であることを特徴とする請求項２に記載の車両用シートリクライニング装置。 The vehicle seat reclining device according to claim 2, wherein the loop-shaped welding locus is a substantially C-shaped welding locus. 同心円上の複数箇所を前記略Ｃ字状の溶接軌跡で溶接することを特徴とする請求項３に記載の車両用シートリクライニング装置。 The vehicle seat reclining device according to claim 3, wherein a plurality of locations on concentric circles are welded along the substantially C-shaped welding locus. 前記レーザ溶接は、長焦点のレーザビームをミラーにより反射して前記溶接軌跡に沿って誘導するリモートレーザ溶接であることを特徴とする請求項１ないし請求項４に記載の車両用シートリクライニング装置。 5. The vehicle seat reclining device according to claim 1, wherein the laser welding is remote laser welding in which a long-focus laser beam is reflected by a mirror and guided along the welding locus.
JP2004196994A 2004-07-02 2004-07-02 Vehicle seat reclining device Pending JP2006014999A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007012569U1 (en) 2007-09-07 2009-01-08 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg adjustment
KR101042188B1 (en) 2009-02-19 2011-06-16 주식회사 금창 Automobile seat recliner laser welding method
KR101083335B1 (en) 2010-04-02 2011-11-14 (주) 지.에이 테크 Standard frame and the manufacture method of car seat
CN103313877A (en) * 2010-12-20 2013-09-18 凯波有限责任两合公司 Method for connecting two components of a vehicle seat
US8708412B2 (en) 2008-01-17 2014-04-29 Fisher & Company, Incorporated Round recliner mechanism
DE112009000244B4 (en) * 2008-02-05 2014-05-22 Fisher Dynamics Corp. Multiple Sperrklinkenrundverstellmechanismus
JP2014237440A (en) * 2008-09-18 2014-12-18 ジョンソン コントロールズ テクノロジー カンパニーＪｏｈｎｓｏｎ Ｃｏｎｔｒｏｌｓ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏｍｐａｎｙ Weldable attachment mechanisms
US9296315B2 (en) 2013-02-26 2016-03-29 Fisher & Company, Incorporated Recliner mechanism with backdriving feature
US9902297B2 (en) 2014-06-11 2018-02-27 Fisher & Company, Incorporated Latch mechanism with locking feature
JP2020137972A (en) * 2019-03-02 2020-09-03 デルタ工業株式会社 Reclining device, seat, manufacturing method of reclining device and connecting method of reclining device

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007012569U1 (en) 2007-09-07 2009-01-08 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg adjustment
US8708412B2 (en) 2008-01-17 2014-04-29 Fisher & Company, Incorporated Round recliner mechanism
DE112009000244B4 (en) * 2008-02-05 2014-05-22 Fisher Dynamics Corp. Multiple Sperrklinkenrundverstellmechanismus
JP2014237440A (en) * 2008-09-18 2014-12-18 ジョンソン コントロールズ テクノロジー カンパニーＪｏｈｎｓｏｎ Ｃｏｎｔｒｏｌｓ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏｍｐａｎｙ Weldable attachment mechanisms
KR101042188B1 (en) 2009-02-19 2011-06-16 주식회사 금창 Automobile seat recliner laser welding method
KR101083335B1 (en) 2010-04-02 2011-11-14 (주) 지.에이 테크 Standard frame and the manufacture method of car seat
CN103313877A (en) * 2010-12-20 2013-09-18 凯波有限责任两合公司 Method for connecting two components of a vehicle seat
JP2013544708A (en) * 2010-12-20 2013-12-19 カイパー ゲーエムベーハー ウント コンパニー カーゲー Method for connecting two components of a vehicle seat
US9050643B2 (en) 2010-12-20 2015-06-09 Keiper Gmbh & Co. Kg Method for connecting two components of a vehicle seat
KR101547477B1 (en) 2010-12-20 2015-08-26 존슨 컨트롤즈 컴포넌츠 게엠베하 운트 코. 카게 Method for connecting two components of a vehicle seat
CN103313877B (en) * 2010-12-20 2015-12-09 凯波有限责任两合公司 For connecting the method for two parts of seat
US9296315B2 (en) 2013-02-26 2016-03-29 Fisher & Company, Incorporated Recliner mechanism with backdriving feature
US9902297B2 (en) 2014-06-11 2018-02-27 Fisher & Company, Incorporated Latch mechanism with locking feature
JP2020137972A (en) * 2019-03-02 2020-09-03 デルタ工業株式会社 Reclining device, seat, manufacturing method of reclining device and connecting method of reclining device

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