JP3822376B2 - Reclining device - Google Patents

Reclining device Download PDF

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Publication number
JP3822376B2
JP3822376B2 JP00157899A JP157899A JP3822376B2 JP 3822376 B2 JP3822376 B2 JP 3822376B2 JP 00157899 A JP00157899 A JP 00157899A JP 157899 A JP157899 A JP 157899A JP 3822376 B2 JP3822376 B2 JP 3822376B2
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JP
Japan
Prior art keywords
bracket
spiral spring
locking plate
fixed
disk
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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JP00157899A
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Japanese (ja)
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JP2000197535A (en
Inventor
伊藤久人
林一生
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Imasen Electric Industrial Co Ltd
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Imasen Electric Industrial Co Ltd
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Filing date
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Priority to JP00157899A priority Critical patent/JP3822376B2/en
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Application granted granted Critical
Publication of JP3822376B2 publication Critical patent/JP3822376B2/en
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  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は自動車用シート等に用いられるリクライニング装置に関するもので、特にシートバックを常時前倒方向に付勢するスパイラルスプリングの端部が係止される係止板の固定部分の構成を特徴とするリクライニング装置に関するものである。
【0002】
【従来の技術】
従来から種々のリクライニング装置が提案および実用化されているが、自動車用シートへの取り付けスペースの関係と基本構成の共通化に有利なものとして、角度調整機構が略円盤状にユニットとして共通化され、これに各シートに適したブラケットが取り付けられるリクライニング装置が実用化されている。
【0003】
この種のリクライニング装置における略円盤状のユニットは、可動円盤と固定円盤とが回転支持軸を兼ねる操作軸を中心に相対回転可能に取り付けられていおり、一方の円盤には内歯歯車が設けられ、他方の円盤には前記内歯歯車に係離されるロックギアが配設されている。当該ユニットの一方の円盤にはシートバック側のブラケットが、また、他方の円盤にはシートクッション側のブラケットが固定され、シートバックを常時前倒方向に付勢するスパイラルスプリングの外方端が一方のブラケットに設けられた係止片に、スパイラルスプリングの内方端が他方のブラケットに設けられた係止片に各々係止される構成となっており、通常スパイラルスプリングの外方端および内方端が係止される係止片は、各ブラケットにリベットを用いたカシメあるいは溶接によって固定されていた。
【0004】
【発明が解決しようとする課題】
上記従来のリクライニング装置においては、略円盤状にユニット化された角度調整機構を基本部品的に使用でき、部品の共通化生産性の向上効果が大きいものの、スパイラルスプリングの外方端および内方端が係止される係止片を各ブラケットにカシメあるいは溶接によって固定する必要があった。特に、スパイラルスプリングの内方端を係止する係止片は操作軸の周りの限られたスペースに設けることが必要で、厚さの限られたブラケットへの溶接あるいは通常のリベットを用いたカシメ固定が困難で、作業性および装置の小型化の点で不都合があった。
【0005】
本発明は、上記の不都合を解消したリクライニング装置を提供することを目的とするものである。
【0006】
【課題を解決するための手段】
上記目的を達成するリクライニング装置は、可動円盤と固定円盤とが回転支持軸を兼ねる操作軸を中心に回動可能に組み合わされた略円盤状ユニットの角度調整機構と、前記両円盤の外側面に各々固定されるシートクッション側およびシートバック側の両ブラケットと、シートクッション側およびシートバック側の両ブラケットの間に配設されてシートバックを前倒方向に付勢するスパイラルスプリングとを有するリクライニング装置において、
前記スパイラルスプリングの内方端が係止される係止板には、係合凹部を備えた操作軸が挿通される円孔と、当該円孔と略同心円上にスパイラルスプリングの内方端部の円弧状部分が沿って配設され係止される円弧状突起とが設けられており、また、係止板が固定される側の前記ブラケットには、操作軸が貫通される軸孔周囲部位に突片が一体に形成されており、当該突片が前記係止板の係合凹部に嵌合され、かつ、突片が前記円孔の外側方向に曲げカシメされることにより、係止板がブラケットに固定されるよう構成されたことを特徴とするものである。
【0007】
【実施例】
図は本発明に係るリクライニング装置の一実施例を示すもので、以下各図に基づき説明する。
【0008】
Aはリクライニング装置で、このリクライニング装置Aは自動車用シートのシートバック側に取り付けられるシートバックブラケット1と、シートクッション側に取り付けられるシートクッションブラケット2と、前記の両ブラケットの間に介装された略円盤状ユニットの角度調整機構Bとから構成されている。角度調整機構Bは、シートクッションブラケット2が固定される有底皿状の固定円盤4とシートバックブラケット1が固定される有底皿状の可動円盤5とを備え、可動円盤5は固定円盤4の周縁に形成された周壁部4a内に抱き合わされる状態で組み合わされ、操作軸3を軸として両円盤が相対回転可能となっている。この可動円盤5には固定円盤4と対向する側に円形の凹入部5aが設けられ、凹入部5aの内周壁部には内歯5bが形成されている。また、固定円盤4には可動円盤5と対向する側に一対ずつの案内板6,6が一体に形成されており、それぞれの案内板6,6間に案内溝6a,6aが形成されると共に、各案内溝6a,6a内に前記の可動円盤5の内歯5b方向に進退動可能なロックギア7,7が配設されている。
【0009】
更に、前記の可動円盤5の凹入部5a内には操作軸3の角軸部3aに枢支されたカム体8と、このカム体8と一体化された作動板9と、カム体8の両側部位に配置された渦巻きバネ10とが配設されている。カム体8には相対して配設された前記の両ロックギア7,7の各々に当接して内歯5b方向に押動させる***部8a,8aが設けられており、作動板9には各ロックギア7,7に植設されたピン7bが挿通されるカム孔9aが設けられており、また、渦巻きバネ10,10の内端は前記の固定円盤4の突杆4bに係止され、その外端はカム体8に係止され、この渦巻バネ10,10の働きによってカム体8,8を介して各ロックギア7,7の係止歯7a,7aが可動円盤5の内歯5aに常時噛合される方向に付勢されている。
【0010】
前記のシートバックブラケット1とシートクッションブラケット2には前記の操作軸3が貫通されており、操作軸3のシートクッションブラケット2側に突出された先端には操作レバー11が固定されており、シートバックブラケット1とシートクッションブラケット2との間にはスパイラルスプリング13が配設されている。スパイラルスプリング13の外方端はシートバックブラケット1にカシメ止めされた係止板1aの突出片部1bに係止され、その内方端はシートクッションブラケット2の操作軸3廻り部位に止着された係止板12に係止されており、スパイラルスプリング13によってシートバックブラケット1に取り付けられるシートバック(図示省略)が前倒方向に付勢されるようになっている。
【0011】
前記の係止板12には略円板状の本体に複数の係合凹部12aを備えた円孔12bが設けられ、円孔12bと略同心円上に円弧状突起12cが、円板状の本体から略同一平面状に一体に延設された係止片部12dが各々設けられている。また、係止板12が固定されるシートクッションブラケット2には、操作軸3が貫通される軸孔周囲部位に複数の突片2b,2bが一体に形成されており、この突片2b,2bは前記の係止板12の係合凹部12a,12aに嵌入、係合されるように設定されており、この状態で各突片2b,2bが係止板12の円孔12bの外側方向に折曲されて曲げカシメされることにより、係止板12がシートクッションブラケット2に固定されている。
【0012】
前記のスパイラルスプリング13の内方端部の円弧状部分は係止板12の円弧状起立片部12cに沿って配設され、その折曲端部は円弧状起立片部12cの一方の端辺に係止されている。また、コイルスプリング14の一端は係止板12の係止片部12dに係止され、その他端は操作レバー11の略中間部分に係止されており、コイルスプリング14によって操作レバー11が非作動方向に付勢されている。
【0013】
従って、図1に示される非作動状態において、操作レバー11がコイルスプリング14の付勢力に抗して時計方向(図においては上方向)に回転操作されると、操作軸3が回転されて角度調整機構Bの内部に配設されたロックギア7の先端に設けられた係止歯7aと内歯5bとの係合が解除され、固定円盤4と可動円盤5とが両円盤を貫通する操作軸3を支点に相対回転可能となり、リクライニング位置の調整がなされる。また、所望のリクライニング調整位置において操作レバー11の操作を解除すれば、再び角度調整機構Bの内部に配設されたロックギア7の先端に設けられた係止歯7aと内歯5bとが係合され、固定円盤4と可動円盤5との相対回転位置が固定され、リクライニング位置が固定される。
【0014】
【発明の効果】
本発明のリクライニング装置においては、スパイラルスプリングの内方端が係止される係止板に係合凹部を備えた円孔と、この円孔と略同心円上に円弧状突起が設けられており、また、係止板が固定されるシート側のブラケットには、操作軸が貫通される軸孔周囲部位に突片が一体に形成されており、この突片が前記係止板の係合凹部に嵌入、係合され、かつ、係止板の円孔の外側方向に折曲されて曲げカシメされることにより、係止板がシートクッションブラケットに固定されている。このため、操作軸の廻りの限られたスペースの中でスパイラルスプリングの内方端を係止する係止板をシート側のブラケットに合理的に固定することができ、従来の溶接あるいはリベットカシメ手段によるものと比べて部品点数の削減および加工作業の効率化が図られる。更に、本発明のリクライニング装置においては、係止板の係合凹部にシート側のブラケットに設けられた突片が係合されることにより仮組み付けおよび位置決めがされるため、組み付け加工時の作業性が向上する。
【図面の簡単な説明】
【図1】リクライニング装置の正面図。
【図2】一部を切欠した正面図。
【図3】縦断側面図。
【図4】シートクッションブラケットの一部正面図。
【図5】係止板の正面図。
【図6】係止板をシートクッションブラケットに止着した状態の正面図。
【図7】図6のX−X´断面図。
【符号の説明】
A リクライニング装置
B 角度調整機構
1 シートブラケット
1a 係止板
1b 突出片部
2 シートクッションブラケット
2b 突片
3 操作軸
3a 角軸部
4 固定円盤
5 可動円盤
5b 内歯
6 案内板
6a 案内溝
7 ロックギア
7a 係止歯
7b ピン
8 カム体
8a ***部
9 作動板
10 渦巻きバネ
11 操作レバー
12 係止板
12a 係合凹部
12b 円孔
12c 円弧状突起
12d 係止片部
13 スパイラルスプリング
14 コイルスプリング
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a reclining device used for an automobile seat or the like, and in particular, has a configuration of a fixing portion of a locking plate to which an end portion of a spiral spring that constantly urges a seat back in a forward-falling direction is locked. The present invention relates to a reclining device.
[0002]
[Prior art]
Various reclining devices have been proposed and put to practical use, but the angle adjustment mechanism has been made common as a unit in the shape of a disk as an advantage for sharing the relationship between the mounting space on the automobile seat and the basic configuration. A reclining device to which a bracket suitable for each seat is attached has been put into practical use.
[0003]
A substantially disk-shaped unit in this type of reclining device has a movable disk and a fixed disk mounted so as to be relatively rotatable around an operation shaft that also serves as a rotation support shaft, and one of the disks is provided with an internal gear. The other disk is provided with a lock gear that is engaged with and disengaged from the internal gear. A bracket on the seat back side is fixed to one disk of the unit, and a bracket on the seat cushion side is fixed to the other disk, and the outer end of the spiral spring that constantly urges the seat back in the forward direction is one side. The inner end of the spiral spring is engaged with the engagement piece provided on the other bracket, and the inner end of the spiral spring is engaged with the engagement piece provided on the other bracket. The locking pieces whose ends are locked were fixed to each bracket by caulking or welding using rivets.
[0004]
[Problems to be solved by the invention]
In the above conventional reclining device, the angle adjustment mechanism unitized in a substantially disk shape can be used as a basic part, and although the effect of improving the common productivity of parts is great, the outer end and inner end of the spiral spring It is necessary to fix the locking piece to be locked to each bracket by caulking or welding. In particular, the locking piece for locking the inner end of the spiral spring needs to be provided in a limited space around the operating shaft, and welding to a bracket with a limited thickness or caulking using a normal rivet is required. Fixing is difficult, and there are disadvantages in terms of workability and downsizing of the apparatus.
[0005]
An object of the present invention is to provide a reclining device that solves the above-mentioned disadvantages.
[0006]
[Means for Solving the Problems]
A reclining device that achieves the above object includes an angle adjusting mechanism for a substantially disk-shaped unit in which a movable disk and a fixed disk are combined so as to be rotatable about an operation shaft that also serves as a rotation support shaft, and an outer surface of both the disks. A reclining device having both brackets on the seat cushion side and the seat back side that are respectively fixed, and a spiral spring that is disposed between both brackets on the seat cushion side and the seat back side and urges the seat back in the forward direction. In
The locking plate to which the inner end of the spiral spring is locked has a circular hole through which an operation shaft having an engagement recess is inserted, and an inner end of the spiral spring substantially concentrically with the circular hole. An arc-shaped protrusion is provided along which the arc-shaped portion is disposed and locked, and the bracket on the side to which the locking plate is fixed is provided at a portion around the shaft hole through which the operation shaft passes. The projecting piece is integrally formed, the projecting piece is fitted into the engaging recess of the locking plate, and the projecting piece is bent and crimped outwardly of the circular hole, whereby the locking plate is It is configured to be fixed to a bracket.
[0007]
【Example】
FIG. 1 shows an embodiment of a reclining device according to the present invention, which will be described with reference to the drawings.
[0008]
A is a reclining device. The reclining device A is interposed between the seat back bracket 1 attached to the seat back side of the vehicle seat, the seat cushion bracket 2 attached to the seat cushion side, and both the brackets. It is comprised from the angle adjustment mechanism B of a substantially disk shaped unit. The angle adjustment mechanism B includes a bottomed dish-shaped fixed disk 4 to which the seat cushion bracket 2 is fixed and a bottomed dish-shaped movable disk 5 to which the seatback bracket 1 is fixed. The movable disk 5 is a fixed disk 4. The two disks are relatively rotatable about the operation shaft 3 by being combined with each other in the state of being embraced in the peripheral wall portion 4a formed on the peripheral edge of each of them. This movable disk 5 is provided with a circular recessed part 5a on the side facing the fixed disk 4, and an inner tooth 5b is formed on the inner peripheral wall part of the recessed part 5a. The fixed disk 4 is integrally formed with a pair of guide plates 6 and 6 on the side facing the movable disk 5, and guide grooves 6 a and 6 a are formed between the guide plates 6 and 6. In each of the guide grooves 6a, 6a, lock gears 7, 7 capable of moving back and forth in the direction of the inner teeth 5b of the movable disk 5 are disposed.
[0009]
Further, in the recessed portion 5 a of the movable disk 5, a cam body 8 pivotally supported by the angular shaft portion 3 a of the operation shaft 3, an operation plate 9 integrated with the cam body 8, and the cam body 8 Spiral springs 10 are disposed on both sides. The cam body 8 is provided with raised portions 8a and 8a which are brought into contact with the lock gears 7 and 7 disposed opposite to each other and are pushed in the direction of the internal teeth 5b. A cam hole 9 a through which a pin 7 b implanted in each lock gear 7, 7 is inserted is provided, and the inner ends of the spiral springs 10, 10 are locked to the protrusion 4 b of the fixed disk 4. The outer ends thereof are locked to the cam body 8, and the locking teeth 7 a and 7 a of the lock gears 7 and 7 are connected to the inner teeth of the movable disk 5 via the cam bodies 8 and 8 by the action of the spiral springs 10 and 10. It is urged in a direction that is always meshed with 5a.
[0010]
The operation shaft 3 is penetrated through the seat back bracket 1 and the seat cushion bracket 2, and an operation lever 11 is fixed to a front end of the operation shaft 3 protruding to the seat cushion bracket 2 side. A spiral spring 13 is disposed between the back bracket 1 and the seat cushion bracket 2. The outer end of the spiral spring 13 is locked to the protruding piece 1b of the locking plate 1a that is fastened to the seat back bracket 1, and the inner end thereof is fixed to a portion around the operation shaft 3 of the seat cushion bracket 2. The seat back (not shown) that is secured to the seat back bracket 1 by the spiral spring 13 is urged forwardly.
[0011]
The locking plate 12 is provided with a circular hole 12b having a plurality of engaging recesses 12a in a substantially disk-shaped main body, and an arc-shaped protrusion 12c substantially concentrically with the circular hole 12b. 12d, respectively, are provided so as to extend integrally in substantially the same plane. Further, the seat cushion bracket 2 to which the locking plate 12 is fixed has a plurality of projecting pieces 2b and 2b integrally formed around the shaft hole through which the operation shaft 3 passes, and the projecting pieces 2b and 2b. Is set so as to be fitted into and engaged with the engaging recesses 12a and 12a of the locking plate 12. In this state, the projecting pieces 2b and 2b extend outwardly from the circular holes 12b of the locking plate 12. The locking plate 12 is fixed to the seat cushion bracket 2 by being bent and crimped.
[0012]
The arc-shaped portion of the inner end portion of the spiral spring 13 is disposed along the arc-shaped standing piece portion 12c of the locking plate 12, and the bent end portion is one end side of the arc-shaped standing piece portion 12c. It is locked to. Further, one end of the coil spring 14 is locked to the locking piece 12d of the locking plate 12, and the other end is locked to a substantially middle portion of the operating lever 11, and the operating lever 11 is not operated by the coil spring 14. Is biased in the direction.
[0013]
Accordingly, in the non-actuated state shown in FIG. 1, when the operation lever 11 is rotated clockwise (upward in the drawing) against the urging force of the coil spring 14, the operation shaft 3 is rotated and the angle is increased. An operation in which the engagement between the locking tooth 7a provided at the tip of the lock gear 7 provided inside the adjustment mechanism B and the internal tooth 5b is released, and the fixed disk 4 and the movable disk 5 pass through both disks. The shaft 3 can be rotated relative to the fulcrum, and the reclining position is adjusted. Further, if the operation of the operation lever 11 is released at a desired reclining adjustment position, the engagement teeth 7a and the inner teeth 5b provided at the tip of the lock gear 7 provided inside the angle adjustment mechanism B are again engaged. The relative rotational position of the fixed disk 4 and the movable disk 5 is fixed, and the reclining position is fixed.
[0014]
【The invention's effect】
In the reclining device of the present invention, a circular hole provided with an engaging recess in a locking plate to which the inner end of the spiral spring is locked, and an arc-shaped protrusion is provided substantially concentrically with the circular hole, In addition, the bracket on the seat side to which the locking plate is fixed is integrally formed with a protruding piece around the shaft hole through which the operation shaft passes, and this protruding piece is formed in the engaging recess of the locking plate. The locking plate is fixed to the seat cushion bracket by being fitted, engaged, and bent and crimped outwardly of the circular hole of the locking plate. For this reason, the locking plate for locking the inner end of the spiral spring can be rationally fixed to the seat side bracket in a limited space around the operating shaft, so that conventional welding or rivet caulking means can be used. Compared with the above, the number of parts can be reduced and the efficiency of processing work can be improved. Further, in the reclining device according to the present invention, since the protrusions provided on the bracket on the seat side are engaged with the engaging recesses of the locking plate, temporary assembly and positioning are performed, so that workability during assembly processing Will improve.
[Brief description of the drawings]
FIG. 1 is a front view of a reclining device.
FIG. 2 is a front view with a part cut away.
FIG. 3 is a longitudinal side view.
FIG. 4 is a partial front view of a seat cushion bracket.
FIG. 5 is a front view of a locking plate.
FIG. 6 is a front view of a state in which a locking plate is fixed to a seat cushion bracket.
7 is a cross-sectional view taken along the line XX ′ of FIG.
[Explanation of symbols]
A Reclining device B Angle adjustment mechanism 1 Seat bracket 1a Locking plate 1b Projection piece 2 Seat cushion bracket 2b Projection piece 3 Operation shaft 3a Square shaft portion 4 Fixed disc 5 Movable disc 5b Internal teeth 6 Guide plate 6a Guide groove 7 Lock gear 7a Locking tooth 7b Pin 8 Cam body 8a Raised portion 9 Actuating plate 10 Spiral spring 11 Operation lever 12 Locking plate 12a Engaging recess 12b Circular hole 12c Arc-shaped protrusion 12d Locking piece 13 Spiral spring 14 Coil spring

Claims (1)

可動円盤と固定円盤とが回転支持軸を兼ねる操作軸を中心に回動可能に組み合わされた略円盤状ユニットの角度調整機構と、前記両円盤の外側面に各々固定されるシートクッション側およびシートバック側の両ブラケットと、シートクッション側およびシートバック側の両ブラケットの間に配設されてシートバックを前倒方向に付勢するスパイラルスプリングとを有し、スパイラルスプリングの外方端が一方のブラケットに設けられた係止板にスパイラルスプリングの内方端が他方のブラケットに設けられた係合板に各々係止されるリクライニング装置であって、前記スパイラルスプリングの内方端が係止される係止板には、係合凹部を備えた操作軸が挿通される円孔と、当該円孔と略同心円上に配設させたスパイラルスプリングの内方端部の円弧状部分が係止される円弧状突起とを設け、また係止板が固定される側の前記ブラケットには、操作軸が貫通される軸孔周囲部位に突片を一体的に形成し、当該突片が前記係止板の係合凹部に嵌合されかつ突片が前記係合凹部の外側方向に曲げカシメされることにより、係止板がブラケットに固定されるよう構成したことを特徴とするリクライニング装置。An angle adjustment mechanism of a substantially disk-shaped unit in which a movable disk and a fixed disk are combined so as to be rotatable around an operation shaft that also serves as a rotation support shaft, and a seat cushion side and a seat that are respectively fixed to the outer surfaces of the two disks A backside bracket, and a spiral spring disposed between the seat cushion side and the seatback side brackets for biasing the seatback forwardly, with the outer end of the spiral spring being on one side A reclining device in which an inner end of a spiral spring is respectively engaged with an engagement plate provided on the other bracket, and an inner end of the spiral spring is engaged with an engagement plate provided on the bracket. the locking plate, a circular hole the operating shaft having an engagement recess is inserted, inner end of the spiral spring is disposed in the circular hole substantially concentric The arcuate projections arcuate portion is locked provided in, also in the said bracket on the side of the locking plate is fixed, integrally formed projecting pieces into the shaft hole around the site where the operation shaft is penetrated The projecting piece is fitted into the engaging recess of the locking plate, and the projecting piece is bent and crimped outwardly of the engaging recess so that the locking plate is fixed to the bracket. The recliner that features.
JP00157899A 1999-01-07 1999-01-07 Reclining device Expired - Fee Related JP3822376B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP00157899A JP3822376B2 (en) 1999-01-07 1999-01-07 Reclining device

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Application Number Priority Date Filing Date Title
JP00157899A JP3822376B2 (en) 1999-01-07 1999-01-07 Reclining device

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JP2000197535A JP2000197535A (en) 2000-07-18
JP3822376B2 true JP3822376B2 (en) 2006-09-20

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102069736B (en) * 2010-12-08 2013-04-24 江苏力乐汽车部件股份有限公司 Automobile seat angle adjuster of internal engagement type platformized core element
CN102069737B (en) * 2010-12-08 2013-06-26 江苏力乐汽车部件股份有限公司 Car seat angle adjuster of inner gearing disc platform core element
KR101232923B1 (en) 2011-06-30 2013-02-13 주식회사다스 Recliner device of vehicle seat

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