JPS6345959Y2

JPS6345959Y2 -

Info

Publication number: JPS6345959Y2
Application number: JP1981135852U
Authority: JP
Priority date: 1981-09-12
Filing date: 1981-09-12
Publication date: 1988-11-30
Also published as: JPS5841256U

Description

【考案の詳細な説明】この考案は自動車用シートのリクライニング装
置に関し、特に、車体側に取り付けられるシート
ボトムに対して、シートバツクを傾斜調節可能と
すると共に完全に前倒れ出来るように取付けたリ
クライニング装置に関するものである。[Detailed description of the invention] This invention relates to a reclining device for an automobile seat, and in particular, a reclining device that is attached to the seat bottom attached to the vehicle body so that the seat back can be adjusted in inclination and can be completely tilted forward. It is related to.

従来、この種のリクライニング装置として、実
公昭56−4507号公報において、傾動調節可能に枢
着する第１枢着手段と、該第１枢着手段を解除す
ると前傾回動するアームの傾斜角度を感知して第
２枢着手段を自動でロツク解除し、シートバツク
の前倒れが出来るようにした装置が提供されてお
り、該装置では操作手段が一つであり、容易に操
作出来る利点がある。しかしながら、上記装置
は、アームの前方への回動に伴つて前進してくる
フツクの基端部が、シートボトムに設けた突部に
ぶつかり、上記フツクの先端部と第２枢着手段の
ロツクピンとの係合を解除する構造としており、
シートボトムに上記突部が突出しているため、乗
員が着座した際に、尻部に当たるという欠点があ
つた。 Conventionally, this type of reclining device is disclosed in Japanese Utility Model Publication No. 56-4507, which includes a first pivoting means that is pivotally mounted to be adjustable in tilt, and an inclination angle of an arm that rotates forward when the first pivoting means is released. A device has been provided which automatically unlocks the second pivoting means by sensing the movement of the seat back and allows the seat back to tilt forward.This device has a single operating means and has the advantage of being easy to operate. . However, in the above device, the proximal end of the hook, which moves forward as the arm rotates forward, collides with the protrusion provided on the seat bottom, causing the distal end of the hook and the lock pin of the second pivot means to collide. It has a structure that releases the engagement with the
Since the protrusion protrudes from the seat bottom, there is a drawback that the protrusion hits the buttocks of the occupant when he or she is seated.

この考案は上記した従来の欠点を解消し、シー
トボトムに突部を設ける代りに、操作レバーの一
端にロツク解除用の突部を設け、乗員の着座部分
の突部をなくして乗員に不快感を与えないように
し、かつ、通常の傾斜角度調節時の操作レバーの
操作では上記突部でロツク解除がなされないよう
に突部と係合する係合片を設け、シートバツクを
前倒しする時のみ上記係合片による係止を解いて
操作レバーをオーバーストローク移動可として上
記突部でロツク解除し、確実にシートバツクの傾
斜角度調節機能を果すと共に完全に前倒し出来る
シートのリクライニング装置を提供せんとするも
のである。 This invention solves the above-mentioned conventional drawbacks, and instead of providing a protrusion on the seat bottom, a protrusion for unlocking is provided at one end of the operating lever, eliminating the protrusion on the passenger's seating area, which causes discomfort to the occupant. In addition, an engaging piece is provided that engages with the protrusion to prevent the lock from being released by the protrusion when operating the operating lever during normal tilt angle adjustment, and the above-mentioned feature is provided only when the seatback is moved forward. To provide a seat reclining device which reliably performs the function of adjusting the inclination angle of the seat back and can be moved completely forward by releasing the lock by the engaging piece and allowing the operating lever to move over the stroke and releasing the lock by the projection. It is.

以下、この考案を図面を示す実施例により詳細
に説明する。 Hereinafter, this invention will be explained in detail with reference to embodiments shown in the drawings.

自動車用シートは、車体側に取付けられるシー
トボトム１に対して、リクライニング装置２で連
結して傾動自在にシートバツク３を取付けてい
る。 In an automobile seat, a seat back 3 is attached to a seat bottom 1 attached to a vehicle body side, which is connected to a reclining device 2 so as to be tiltable.

上記リクライニング装置２は、シートボトム１
にロアブラケツト４を固定し、該ロアブラケツト
４に、アツパーブラケツト５の下側部を第１枢支
軸６を介して回動自在に枢支している。該アツパ
ーブラケツト５の上側部は第２枢支軸７を介して
シートバツク３を回動自在に枢支している。 The reclining device 2 includes a seat bottom 1
A lower bracket 4 is fixed to the lower bracket 4, and a lower part of an upper bracket 5 is rotatably supported on the lower bracket 4 via a first pivot shaft 6. The upper part of the upper bracket 5 rotatably supports the seat back 3 via a second pivot shaft 7.

上記アツパーブラケツト５の下端部にはセクタ
ーギヤ８を固着する一方、ロアブラケツト４には
セクターギヤ８に係脱自在なロツクギヤ９をピン
１０を介して揺動自在に取付けている。該ロツク
ギヤ９にピン１４を突設している。上記第１枢支
軸６に、操作レバー１２を回動自在に取付け、該
操作レバー１２の一端部に操作部１２ａを設ける
と共に、他端部に突部１２ｂを設けている。ま
た、該操作レバー１２に係合溝１３を形成し、上
記ロツクギヤ９に突設したピン１４と係合させる
と共に、操作レバー１２とロアブラケツト４との
間に引張コイルスプリング１１を張架し、操作レ
バー１２の操作部１２ａを下方に付勢している。
該引張コイルスプリング１１に付勢された下方位
置に操作レバー１２が位置する時、ロツクギヤ９
とセクターギヤ８は噛み合つており、操作レバー
１２をＰ方向に引圧操作すると係合溝１３の移動
でピン１４が移動され、ロツクギヤ９とセクター
ギヤ８との噛み合いが外れるようになつている。
操作レバー１２の引圧を解除すると引張コイルス
プリング１１の付勢力により下方へ移動し、ピン
１４を介してロツクギヤ９が回動し、セクターギ
ヤ８と噛み合うようにしている。 A sector gear 8 is fixed to the lower end of the upper bracket 5, while a lock gear 9 which can be freely engaged with and detached from the sector gear 8 is swingably attached to the lower bracket 4 via a pin 10. A pin 14 is provided protruding from the lock gear 9. An operating lever 12 is rotatably attached to the first pivot shaft 6, and an operating portion 12a is provided at one end of the operating lever 12, and a protrusion 12b is provided at the other end. Further, an engagement groove 13 is formed in the operating lever 12 to engage with a pin 14 protruding from the lock gear 9, and a tension coil spring 11 is stretched between the operating lever 12 and the lower bracket 4. The operating portion 12a of the operating lever 12 is urged downward.
When the operating lever 12 is located in the downward position biased by the tension coil spring 11, the lock gear 9
The sector gear 8 is engaged with the lock gear 9, and when the operating lever 12 is pulled in the P direction, the pin 14 is moved by the movement of the engagement groove 13, and the lock gear 9 and the sector gear 8 are disengaged. .
When the pulling pressure on the operating lever 12 is released, it moves downward due to the biasing force of the tension coil spring 11, and the lock gear 9 rotates via the pin 14 to mesh with the sector gear 8.

また、シートバツク３には、第２枢支軸７の下
方にアツパーブラケツト５に向つて突出したロツ
クピン１５を突設する一方、アツパーブラケツト
にフツク１６をピン１７を介して回動自在に取付
けると共にねじりコイルバネ１８で付勢し、上記
ロツクピン１５にフツク１６が常時係合するよう
にしている。該フツク１６の一端は上記操作レバ
ー１２の突部１２ｂと係脱自在であり、常時は当
接しない外れた位置にある。 Further, the seat back 3 is provided with a lock pin 15 projecting below the second pivot shaft 7 and protruding toward the upper bracket 5, and a hook 16 is rotatably attached to the upper bracket via a pin 17. At the same time, the hook 16 is biased by a torsion coil spring 18 so that the hook 16 is always engaged with the lock pin 15. One end of the hook 16 can be freely engaged with and disengaged from the protrusion 12b of the operating lever 12, and is normally in a detached position where it does not come into contact with it.

また、上記ロアブラケツト４には、操作レバー
１２の取付位置より上方に、略Ｌ字状の係止片２
０をピン２１を介して回動自在に枢支すると共
に、ねじりコイルバネ２２により図中反時計方向
に付勢している。また、アツパーブラケツト５に
上記係止片２０と当接可能な凸状の係止部２３を
形成している。 Further, the lower bracket 4 has a substantially L-shaped locking piece 2 above the mounting position of the operating lever 12.
0 is rotatably supported via a pin 21 and biased counterclockwise in the figure by a torsion coil spring 22. Further, a convex locking portion 23 that can come into contact with the locking piece 20 is formed on the upper bracket 5.

上記係止片２０は、操作レバー１２を原位置○ The locking piece 20 allows the operation lever 12 to be moved to its original position.

Claims

[Claims for Utility Model Registration] In a seat reclining device in which a seat back 3 is tiltably connected to a seat bottom 1 attached to the vehicle body, a lower bracket 4 is fixed to the seat bottom 1, and a lower bracket 4 is fixed to the seat bottom 1. The lower side of the upper bracket 5 is rotatably supported via a first pivot shaft 6, and the upper side of the upper bracket 5 is rotatably supported on the seat bag 3 by a second pivot shaft 7. A sector gear 8 is fixed to the lower end of the upper bracket 5, and a lock gear 9, which can be freely engaged and detached from the sector gear 8, is swingably attached to the lower bracket 4 via a pin 10. 14
The operating lever 12 is rotatably attached to the first pivot shaft 6, and the operating lever 1
2 and the lower bracket 4, the operating lever 12 is biased, and the engagement groove 13 formed in the operating lever 12 is engaged with the pin 14, and the pulling pressure of the operating lever 12 is applied. At the time of operation, the lock gear 9 and the sector gear 8 are disengaged and the uppocket bracket 5 is tilted forward, while a protrusion 12b is formed at the tip of the operation lever 12 opposite to the operation part 12a, and the protrusion 12
A hook 16 is rotatably attached to the upper bracket 5 via a pin 17 at a position close to the upper bracket 5, and the hook 16 is engaged with a lock pin 15 protruding from the seat back 3. A locking piece 20 is rotatably supported by a pin 21 above the mounting position of the lever 12 and biased by a torsion coil spring 22, and a convex portion is provided on the upper bracket 5 that can come into contact with the locking piece 20. A locking portion 23 having a shape is formed, and when the upper bracket 5 is tilted forward, the locking portion 23 presses the locking piece 20,
Release the engagement between the locking piece 20 and the operating lever 12,
Enables overstroke movement to a position where the protrusion 12b of the operating lever 12 comes into contact with the hook 16,
When the seat bag 3 is tilted forward with the operation lever 12 being pulled, the hook 16 is attached to the protrusion 12b.
Rotate the hook 16 and lock the lock pin 15.
A seat reclining device characterized in that it is configured to be detached from the seat.