JP3524726B2 - Automotive seat belt winding device - Google Patents
Automotive seat belt winding deviceInfo
- Publication number
- JP3524726B2 JP3524726B2 JP24298697A JP24298697A JP3524726B2 JP 3524726 B2 JP3524726 B2 JP 3524726B2 JP 24298697 A JP24298697 A JP 24298697A JP 24298697 A JP24298697 A JP 24298697A JP 3524726 B2 JP3524726 B2 JP 3524726B2
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- seat belt
- winding
- winding member
- spring
- 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 - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/34—Belt retractors, e.g. reels
- B60R22/44—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/34—Belt retractors, e.g. reels
- B60R22/44—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions
- B60R2022/4493—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions for braking the belt reel using friction surfaces or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は自動車用シートベル
トの巻取り装置に関し、詳しくはシートベルト装着時の
巻取り力軽減手段に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat belt retractor, and more particularly to means for reducing a retracting force when a seat belt is worn.
【０００２】[0002]
【従来の技術】自動車用シートベルトは乗員を衝突事故
から保護すべく身体を座席に拘束するものである。上記
シートベルトの巻取りはぜんまいばね力で行われ、ばね
力に抗してシートベルトを引き出してタングをバックル
に挿入し、乗員に装着する。その際、ぜんまいばね力に
より巻き取られる方向に力が働いて身体胸部を締め付
け、乗員はシートベルトによる圧迫感を覚える。そのた
め、シートベルト装着時、シートベルト巻取り力を軽減
して胸部の締め付けを緩和し、乗員の圧迫感を減少して
装着フィーリングを改善する必要がある。2. Description of the Related Art An automobile seat belt restrains an occupant from a collision accident by restraining his / her body in a seat. The winding of the seat belt is performed by the spring force of the mainspring, and the seat belt is pulled out against the spring force, the tongue is inserted into the buckle, and the seat belt is attached to the occupant. At that time, the spring force exerts a force in the winding direction to tighten the chest of the body, and the occupant feels a feeling of pressure by the seat belt. Therefore, when the seat belt is worn, it is necessary to reduce the seat belt retracting force to ease the tightening of the chest and reduce the occupant's feeling of tightness to improve the wearing feeling.
【０００３】そこで、シートベルト巻取り力を軽減する
ため、従来、出力の異なる強弱２個のぜんまいばねを組
み合わせ、シートベルト引き出し及び収納時に強弱２個
のばねを作用させる一方、シートベルト装着時には弱い
ばねのみ作用させて巻取り力を軽減するようにしたもの
が知られている（特公昭６０−３０５７６号公報等）。Therefore, in order to reduce the seat belt retracting force, conventionally, two mainspring springs having different strengths are combined so that the two springs acting when the seatbelt is pulled out and stored are weak, while the springs are weak when the seatbelt is worn. It is known that only the spring acts to reduce the winding force (Japanese Patent Publication No. 60-30576).
【０００４】[0004]
【発明が解決しようとする課題】上述の自動車用シート
ベルトの巻取り装置によれば、強弱２個のぜんまいばね
を組み合わせてシートベルト引き出し、収納時と装着時
とで２個のぜんまいばねを使い分けているが、ぜんまい
ばねは高価なため、２個使用したものは高級車仕様に限
られ、しかも切換機構等の構造が複雑になってコストが
高くなる。又、出力の弱いぜんまいばねは形状が複雑
で、必要な寿命を達成するために多くの加工時間と管理
を必要とし、高価になるという不具合がある。According to the above-described seat belt retractor for an automobile, two mainspring springs are combined and two mainspring springs are combined to pull out the seatbelt, and the two mainspring springs are used for storing and mounting. However, since the mainspring is expensive, the use of two mainsprings is limited to high-grade vehicle specifications, and the structure such as the switching mechanism is complicated and the cost is high. In addition, a mainspring with a weak output has a complicated shape, which requires a lot of machining time and management to achieve a required life, and is expensive.
【０００５】本発明の目的は、高価な弱いぜんまいばね
を使用せず、コストを低減した自動車用シートベルトの
巻取り装置を提供することである。An object of the present invention is to provide a seat belt retractor for an automobile, which does not use an expensive weak mainspring spring and which has a reduced cost.
【０００６】[0006]
【課題を解決するための手段】本発明は、自動車用シー
トベルト巻軸に連動するシャフトと、上記シャフトに圧
嵌された有端の弾性巻部材と、シートベルト装着時にシ
ャフトが巻部材とともに巻取り方向に回転する時、巻部
材の一端部の動きを停止して前記シャフトに対して巻部
材を巻締めることによりシャフトと巻部材との間に摩擦
力を作用させる位置規制手段と、巻心部が上記シャフト
に固定されたぜんまいばねとを具備し、シートベルト引
き出し及び収納時、ぜんまいばね出力を作用させ、シー
トベルト装着時にシャフトが巻部材とともに巻取り方向
に回転する時、巻部材とシャフトとの摩擦力をぜんまい
ばね出力に対するブレーキ力として作用させ、シートベ
ルト装着時の巻取り力を軽減することを特徴とする。SUMMARY OF THE INVENTION According to the present invention, a shaft that interlocks with a seat belt winding shaft for an automobile, an endless elastic winding member that is press-fitted to the shaft, and the shaft is wound together with the winding member when the seat belt is worn. when rotated in the direction taking, windings
The movement of one end of the material is stopped and the winding part is attached to the shaft.
Friction between the shaft and the winding member by tightening the material
The spring includes a position regulating means for exerting a force and a mainspring whose core is fixed to the shaft.When the seatbelt is pulled out and stored, the mainspring output is applied so that the shaft is wound together with the winding member when the seatbelt is attached. When rotating in the take-up direction, the frictional force between the winding member and the shaft is made to act as a braking force for the spring output, and the winding force when the seat belt is worn is reduced.
【０００７】[0007]
【発明の実施の形態】本発明に係る自動車用シートベル
トの巻取り装置の実施の形態を図１（ａ）（ｂ）〜図４
を参照して以下に説明する。まず図１（ａ）において
（１）はケース、（２）はシャフト、（３）は巻部材、
（４）はラチェットホイール、（５）はラチェット爪、
（６）はぜんまいばねで、ラチェットホイール（４）と
ラチェット爪（５）とで本発明に係る位置規制手段を構
成する。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of an automobile seat belt retractor according to the present invention is shown in FIGS.
Will be described below. First, in FIG. 1A, (1) is a case, (2) is a shaft, (3) is a winding member,
(4) is the ratchet wheel, (5) is the ratchet pawl,
(6) is a mainspring, and the ratchet wheel (4) and the ratchet pawl (5) constitute the position regulating means according to the present invention.
【０００８】上記ケース（１）は、図２（ｂ）（ｃ）に
示すように、側方開口の収納部（１ａ）を側蓋（１ｂ）
で閉蓋したもので、リール（７）に始端を固定して巻き
取られた自動車用シートベルト（８）を収容したハウジ
ング（９）の外側面（９ａ）に接続される。シートベル
ト巻軸（１０）はリール（７）の筒孔に挿通される。As shown in FIGS. 2 (b) and 2 (c), the case (1) is provided with a side opening (1a) and a side cover (1b).
It is connected to the outer surface (9a) of the housing (9) accommodating the vehicle seat belt (8) wound with the starting end fixed to the reel (7). The seat belt winding shaft (10) is inserted through the cylindrical hole of the reel (7).
【０００９】シャフト（２）は、図２（ａ）（ｂ）
（ｃ）及び図３（ｂ）（ｃ）に示すように、２層回転デ
ィスク（１１）の両面に中心軸に沿って垂直に一体に取
り付けられた同軸の第１、第２シャフト（２ａ）（２
ｂ）からなり、ハウジング側の第１シャフト（２ａ）の
段差シャフト（２ｃ）にシートベルト巻軸（１０）の方
形凸端（１０ａ）に合わせた方形孔（２ｄ）が穿設され
る。又、図３（ｃ）に示すように、反対側の第２シャフ
ト（２ｂ）に後述するぜんまいばね（６）の巻心部（６
ｂ）に合わせた「の」字形の縦長溝（２ｅ）が穿設され
る。そして、シートベルト巻軸（１０）の凸端（１０
ａ）が方形孔（２ｄ）に挿入されてシャフト（２）に着
脱自在に連結され、シャフト（２）がケース（１）内で
シートベルト巻軸（１０）に同軸に軸支される。The shaft (2) is shown in FIGS.
As shown in (c) and FIGS. 3 (b) and (c), coaxial first and second shafts (2a) vertically and integrally attached to both surfaces of a two-layer rotary disc (11) along a central axis. (2
b), the stepped shaft (2c) of the first shaft (2a) on the housing side is provided with a square hole (2d) aligned with the square convex end (10a) of the seat belt winding shaft (10). Further, as shown in FIG. 3C, a core portion (6) of a mainspring (6) described later is attached to the second shaft (2b) on the opposite side.
A vertical groove (2e) having a "no" shape corresponding to b) is drilled. Then, the convex end (10
(a) is inserted into the rectangular hole (2d) and is detachably connected to the shaft (2), and the shaft (2) is coaxially supported by the seat belt winding shaft (10) in the case (1).
【００１０】巻部材（３）はシャフト（２）のハウジン
グ側の第１シャフト（２ａ）の外周に巻回された有端の
弾性部材、例えばトーションばねで、その内径はシャフ
ト径よりもやや小さく、第１シャフト（２ａ）にきつく
圧嵌される。トーションばね（３）の線断面形状は丸
形、角形で、その他の異形断面もある。後述するよう
に、トーションばね（３）の一端部（３ａ）を固定して
他端部（３ｂ）を自由端にすると、トーションばね
（３）の位置が固定している場合、シャフト（２）の回
転方向に応じてトーションばね（３）が選択的に半径方
向に広がり（空転トルク）又は締まり（起動トルク）、
広がりと締まりによりシャフト（２）に対しクラッチと
して機能する。The winding member (3) is an elastic member having an end, which is wound around the outer periphery of the first shaft (2a) on the housing side of the shaft (2), for example, a torsion spring, the inner diameter of which is slightly smaller than the shaft diameter. , Is tightly fitted onto the first shaft (2a). The line sectional shape of the torsion spring (3) is a round shape or a square shape, and there are also other irregular cross sections. As will be described later, when one end (3a) of the torsion spring (3) is fixed and the other end (3b) is made a free end, when the position of the torsion spring (3) is fixed, the shaft (2) is fixed. The torsion spring (3) selectively expands in the radial direction (idling torque) or tightens (starting torque) according to the rotation direction of
It functions as a clutch to the shaft (2) due to its spread and tightness.
【００１１】例えばトーションばね（３）の位置が固定
していてシャフト（２）がシートベルト巻取り方向（図
示の反時計方向）に回転した時、トーションばね（３）
が締まるため、シャフト（２）との間に大きな摩擦力が
生じ、トーションばね（３）はシートベルト巻取り力に
対しブレーキ力として作用する。上記巻部材（３）とし
てはトーションばねの他、図１（ｂ）に示すように、有
端の円筒状板ばね（３’）でも良く、一端部（３’ａ）
を固定端とし、他端部（３’ｂ）を自由端とする。For example, when the position of the torsion spring (3) is fixed and the shaft (2) rotates in the seat belt retracting direction (counterclockwise direction in the drawing), the torsion spring (3).
Since a large amount of friction is generated between the shaft and the shaft (2), the torsion spring (3) acts as a braking force against the seat belt winding force. As the winding member (3), in addition to a torsion spring, as shown in FIG. 1 (b), a cylindrical leaf spring (3 ') having an end may be used, and one end portion (3'a)
Is a fixed end, and the other end (3′b) is a free end.
【００１２】ラチェットホイール（４）は、図１（ａ）
及び図３（ｄ）（ｅ）に示すように、外周にラチェット
歯部（４ａ）を形成した円環体で、図２（ｃ）に示すよ
うに、環孔内周面に巻部材（３）の収納溝（４ｂ）及び
係合溝（４ｃ）が設けられる。上記収納溝（４ｂ）は図
示右側が開口しており、その開口側からラチェットホイ
ール（４）を巻部材（３）に極僅かの隙間をもって嵌挿
し、収納溝（４ｂ）の左方係止壁（４ｄ）と第２シャフ
ト（２ａ）のフランジ（２ｆ）｛図２（ｃ）を参照｝と
で巻部材（３）を位置決めする。又、係合溝（４ｃ）に
巻部材（３）の一端部（３ａ）が係合して固定され、そ
の他端部（３ｂ）は上述のように自由端となる。The ratchet wheel (4) is shown in FIG.
3 (d) and 3 (e), it is a torus having ratchet teeth (4a) formed on the outer circumference, and as shown in FIG. 2 (c), the winding member (3 ) Storage groove (4b) and engagement groove (4c). The storage groove (4b) is open on the right side in the drawing, and the ratchet wheel (4) is fitted into the winding member (3) from the opening side with a very small gap, and the left locking wall of the storage groove (4b) is inserted. The winding member (3) is positioned by (4d) and the flange (2f) of the second shaft (2a) {see FIG. 2 (c)}. Further, one end portion (3a) of the winding member (3) is engaged with and fixed to the engagement groove (4c), and the other end portion (3b) is a free end as described above.
【００１３】ラチェット爪（５）は、図１（ａ）に示す
ように、爪部（５ａ）と連結部（５ｂ）とを鉤型に一体
成形し、ケース（１）内で軸（５ｃ）により回動自在に
軸支される。そして、ケース（１）の内底部に収容され
たソレノイド（１２）の可動軸（１２ａ）に連結部（５
ｂ）が連結され、連結部（５ｂ）とソレノイド（１２）
との間で可動軸（１２ａ）にリターンスプリング（１
３）が巻装される。又、爪部（５ａ）はラチェット歯部
（４ａ）に噛合可能に向き合い、ソレノイド（１２）の
ＯＮ、ＯＦＦにより可動軸（１２ａ）が突出退入して爪
部（５ａ）がラチェット歯部（４ａ）に噛合又は脱離す
る。ここで、爪部（５ａ）の噛合時、図２（ａ）に示す
ように、ラチェットホイール（４）を反時計方向回転に
対して停止させ、時計方向回転に対して空転させる。As shown in FIG. 1 (a), the ratchet pawl (5) has a pawl portion (5a) and a connecting portion (5b) integrally formed in a hook shape, and a shaft (5c) in the case (1). Is rotatably supported by. Then, the connecting portion (5) is connected to the movable shaft (12a) of the solenoid (12) housed in the inner bottom portion of the case (1).
b) is connected, the connecting part (5b) and the solenoid (12)
Between the movable shaft (12a) and the return spring (1
3) is wound. Further, the pawl portion (5a) faces the ratchet tooth portion (4a) so that it can be meshed, and the movable shaft (12a) projects and retracts by turning the solenoid (12) ON and OFF, so that the pawl portion (5a) moves to the ratchet tooth portion ( 4a) is engaged or disengaged. Here, when the claw portion (5a) is engaged, as shown in FIG. 2 (a), the ratchet wheel (4) is stopped with respect to counterclockwise rotation and idly with respect to clockwise rotation.
【００１４】ぜんまいばね（６）はケース（１）内に収
容され、巻心部（６ａ）が第２シャフト（２ｂ）の縦長
溝（２ｅ）に挿し込まれて固定され、外端部（６ｂ）が
ケース（１）内の固定ボス部（１ｃ）に合わされて固定
される。The mainspring (6) is housed in the case (1), and the winding core (6a) is inserted and fixed in the longitudinal groove (2e) of the second shaft (2b), and the outer end (6b). ) Is fitted and fixed to the fixed boss portion (1c) in the case (1).
【００１５】上記構成に基づき本発明の動作を次に説明
する。まず図４のぜんまいばね出力グラフに示すよう
に、ぜんまいばね（６）は収納時等に出力を必要とする
ので、予巻して出力を蓄えておく。シートベルト（８）
を引き出す際、ソレノイド（１２）がＯＦＦになってリ
ターンスプリング（１３）により可動軸（１２ａ）を突
出させ、ラチェット爪（５）をラチェット歯部（４ａ）
から脱離させる。そこで、ぜんまいばね出力に抗してシ
ートベルト（８）を引き出すと、シートベルト巻軸（１
０）及びシャフト（２）が時計方向に回転して順次、繰
り出される。この時、ぜんまいばね出力に対してラチェ
ットホイール（４）は空転し、且つ、シャフト（２）の
時計方向回転により巻部材（３）は半径方向に広がるた
め、ぜんまいばね（６）の出力が直接、シートベルト引
き出しに作用する。The operation of the present invention based on the above configuration will be described below. First, as shown in the mainspring spring output graph of FIG. 4, the mainspring spring (6) requires an output when it is housed, so it is prewound to store the output. Seat belt (8)
When pulling out, the solenoid (12) is turned off and the movable shaft (12a) is projected by the return spring (13), and the ratchet pawl (5) is attached to the ratchet tooth (4a).
Detach from. Therefore, if the seat belt (8) is pulled out against the output of the mainspring, the seat belt reel (1
0) and the shaft (2) rotate clockwise and are sequentially fed out. At this time, the ratchet wheel (4) idles with respect to the output of the mainspring, and the winding member (3) expands in the radial direction by the clockwise rotation of the shaft (2), so the output of the mainspring (6) directly. , Acts on the seat belt drawer.
【００１６】次に、シートベルト（８）のタングをバッ
クルに挿入し、乗員が身体をシートベルト（８）で拘束
して装着すると、電気的スイッチにより自動的にソレノ
イド（１２）がＯＮになって可動軸（１２ａ）が退入す
る。そして、ラチェット爪（５）がラチェット歯部（４
ａ）に噛合してラチェットホイール（４）は反時計方向
回転に対して停止し、巻部材（３）の位置も固定され
る。Next, when the tongue of the seat belt (8) is inserted into the buckle and the occupant restrains his body with the seat belt (8) and wears it, the solenoid (12) is automatically turned on by an electric switch. The movable shaft (12a) retracts. Then, the ratchet claw (5) is attached to the ratchet tooth (4
The ratchet wheel (4) meshes with a) and stops against counterclockwise rotation, and the position of the winding member (3) is also fixed.
【００１７】一方、シートベルト（８）が装着される
と、身体に適合するためにシートベルト（８）はぜんま
いばね出力によりわずかに巻き取られ、シャフト（２）
は反時計方向に回転する。これによりラチェットホイー
ル（４）は停止し、且つ、シャフト（２）の反時計方向
回転により巻部材（３）は固定位置で締まるため、巻部
材（３）はシャフト（２）に対して大きな摩擦力を生じ
させる。そこで、図４に示すように、上記摩擦力がぜん
まいばね出力に対してブレーキ力として作用し、ぜんま
いばね出力によるシートベルト（８）の巻取り力を制御
・軽減させる。上記摩擦力はトーションばねの場合、巻
数、圧入度及び面粗度により、又、円筒状板ばねの場
合、板面積、圧入度及び面粗度によりそれぞれ決まる。On the other hand, when the seat belt (8) is worn, the seat belt (8) is slightly wound by the mainspring output in order to fit the body, and the shaft (2).
Rotates counterclockwise. As a result, the ratchet wheel (4) is stopped, and the winding member (3) is tightened at a fixed position by the counterclockwise rotation of the shaft (2), so that the winding member (3) has a large friction with the shaft (2). Generate force. Therefore, as shown in FIG. 4, the frictional force acts as a braking force on the mainspring spring output to control / reduce the winding force of the seat belt (8) due to the mainspring spring output. In the case of a torsion spring, the frictional force is determined by the number of turns, press fit and surface roughness, and in the case of a cylindrical leaf spring, it is determined by plate area, press fit and surface roughness.
【００１８】又、シートベルト装着時において乗員の前
かがみ等によりシートベルト（８）が引き出された場
合、シャフト（８）の回転方向（時計方向）がラチェッ
ト爪（５）によってラチェットホイール（４）を停止さ
せない方向であるため、ラチェットホイール（４）が空
転し、シートベルト（８）が引き出される。When the seat belt (8) is pulled out by the occupant leaning forward while wearing the seat belt, the rotation direction (clockwise direction) of the shaft (8) causes the ratchet wheel (4) to move to the ratchet wheel (4). Since the direction is not to stop, the ratchet wheel (4) idles and the seat belt (8) is pulled out.
【００１９】更に、シートベルト収納時、ソレノイド
（１２）はＯＦＦになってラチェットホイール（４）は
空転するため、シートベルト（８）はぜんまいばね出力
によって巻き取られる。Further, when the seat belt is stored, the solenoid (12) is turned off and the ratchet wheel (4) idles, so that the seat belt (8) is wound by the spring output.
【００２０】[0020]
【発明の効果】本発明によれば、ぜんまいばねによって
シートベルトを巻き取る自動車用シートベルトの巻取り
装置において、シートベルト装着時、シャフトに巻回し
た巻部材の摩擦力によってぜんまいばね出力による巻取
り力を軽減したから、出力の弱い高価なぜんまいばねが
不要になって構造が簡単になり、且つ、コストが低減さ
れる。According to the present invention, in a vehicle seat belt retractor for retracting a seat belt by means of a mainspring, when the seatbelt is mounted, it is wound by the output of the mainspring spring due to the frictional force of the winding member wound on the shaft. Since the handling force is reduced, the expensive spring spring with weak output is not required, the structure is simplified, and the cost is reduced.
【図１】（ａ）は本発明に係る自動車用シートベルトの
巻取り装置の実施の形態を示す分解斜視図。（ｂ）は本
発明に係る巻部材の他の実施の形態を示す斜視図。FIG. 1A is an exploded perspective view showing an embodiment of a vehicle seat belt retractor according to the present invention. (B) The perspective view which shows other embodiment of the winding member which concerns on this invention.
【図２】（ａ）（ｂ）は本発明に係る自動車用シートベ
ルトの巻取り装置の組立時の正面図と側面図。（ｃ）は
図２（ｂ）の要部拡大側面図。2 (a) and 2 (b) are a front view and a side view of a vehicle seat belt retractor according to the present invention during assembly. FIG. 2C is an enlarged side view of the main part of FIG.
【図３】（ａ）（ｂ）は本発明に係るシャフトの正面図
と側面図。（ｃ）は本発明に係る第２シャフトの正面
図。（ｄ）（ｅ）は本発明に係るラチェットホイールの
正面図と側面図。3A and 3B are a front view and a side view of a shaft according to the present invention. (C) is a front view of the second shaft according to the present invention. (D) and (e) are a front view and a side view of the ratchet wheel according to the present invention.
【図４】本発明に係るぜんまいばね出力のグラフ。FIG. 4 is a graph of a mainspring output according to the present invention.
２ シャフト ３ 巻部材 ４ ラチェットホイール ５ ラチェット爪 ６ ぜんまいばね １０ シートベルト巻軸 2 shafts 3 roll members 4 ratchet wheel 5 ratchet claws 6 Mainspring 10 seat belt reel
───────────────────────────────────────────────────── フロントページの続き (72)発明者 石田 雅昭 京都府京都市右京区梅津西浦町十四番地 サンコール株式会社内 (72)発明者 山元 光政 京都府京都市右京区梅津西浦町十四番地 サンコール株式会社内 (72)発明者 児玉 明 京都府京都市右京区梅津西浦町十四番地 サンコール株式会社内 (56)参考文献 特開 平３−279059（ＪＰ，Ａ) 特開 昭53−128826（ＪＰ，Ａ) 実開 昭62−115261（ＪＰ，Ｕ) 実開 平５−71067（ＪＰ，Ｕ) 特公 昭60−30576（ＪＰ，Ｂ１) (58)調査した分野(Int.Cl.7，ＤＢ名) B60R 22/00 - 22/48 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masaaki Ishida, 14 Umezu Nishiura-cho, Ukyo-ku, Kyoto-shi, Kyoto Suncall Co., Ltd. (72) Inventor Mitsumasa Yamamoto 14 Umezu- Nishiura-cho, Ukyo-ku, Kyoto, Kyoto Suncall Co., Ltd. (72) Inventor Akira Kodama, 14 Umezu Nishiura-cho, Ukyo-ku, Kyoto City, Kyoto Prefecture (56) Reference JP-A-3-279059 (JP, A) JP-A-53- 128826 (JP, A) Actually open 62-115261 (JP, U) Actually open 5-71067 (JP, U) JP 60-30576 (JP, B1) (58) Fields investigated (Int.Cl. 7 , DB name) B60R 22/00-22/48
Claims (2)
ャフトと、上記シャフトに圧嵌された有端の弾性巻部材
と、シートベルト装着時にシャフトが巻部材とともに巻
取り方向に回転する時、巻部材の一端部の動きを停止し
て前記シャフトに対して巻部材を巻締めることによりシ
ャフトと巻部材との間に摩擦力を作用させる位置規制手
段と、巻心部が上記シャフトに固定されたぜんまいばね
とを具備し、シートベルト引き出し及び収納時、ぜんま
いばね出力を作用させ、シートベルト装着時にシャフト
が巻部材とともに巻取り方向に回転する時、巻部材とシ
ャフトとの摩擦力をぜんまいばね出力に対するブレーキ
力として作用させ、シートベルト装着時の巻取り力を軽
減することを特徴とする自動車用シートベルトの巻取り
装置。1. A shaft interlocking with an automobile seat belt winding shaft, an endless elastic winding member press-fitted to the shaft, and a winding member when the shaft rotates in the winding direction together with the winding member when the seat belt is mounted . Stop the movement of one end of the member
And tighten the winding member around the shaft.
The seat spring is provided with a position regulating means for exerting a frictional force between the shaft and the winding member and a mainspring spring having a winding core fixed to the shaft. When the shaft is rotated in the winding direction together with the winding member when the belt is attached, the frictional force between the winding member and the shaft acts as a braking force for the spring output, reducing the winding force when the seat belt is attached. A seat belt retractor for automobiles.
ャフトと、上記シャフトに圧嵌された有端の弾性巻部材
と、上記巻部材に嵌挿されて巻部材の一端部が固定さ
れ、ラチェット爪の噛合又は脱離により所定方向に停止
又は空転する円環状ラチェットホイールと、巻心部がシ
ャフトに固定されたぜんまいばねとを具備し、シートベ
ルト引き出し及び収納時、ラチェットホイールを空転さ
せてぜんまいばね出力を作用させ、シートベルト装着時
にシャフトが巻取り方向に回転した時、ラチェットホイ
ールを停止させて巻部材とシャフトとの摩擦力をぜんま
いばね出力に対するブレーキ力として作用させ、シート
ベルト装着時の巻取り力を軽減することを特徴とする自
動車用シートベルトの巻取り装置。2. A ratchet, wherein a shaft that interlocks with a seat belt winding shaft for an automobile, an endless elastic winding member that is press fitted to the shaft, and one end of the winding member that is fitted and inserted into the winding member are fixed. Equipped with an annular ratchet wheel that stops or idles in a predetermined direction due to the engagement or disengagement of pawls, and a spring that has a winding core fixed to a shaft.When the seat belt is pulled out and stored, the ratchet wheel is idled. When the shaft is rotated in the winding direction when the seat belt is attached by applying spring output, the ratchet wheel is stopped and the frictional force between the winding member and the shaft acts as a braking force for the spring output. A seat belt retractor for an automobile, which is characterized by reducing a retracting force.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24298697A JP3524726B2 (en) | 1997-09-08 | 1997-09-08 | Automotive seat belt winding device |
| PCT/JP1999/001241 WO2000055018A1 (en) | 1997-09-08 | 1999-03-15 | Car seat belt wind-up device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24298697A JP3524726B2 (en) | 1997-09-08 | 1997-09-08 | Automotive seat belt winding device |
| PCT/JP1999/001241 WO2000055018A1 (en) | 1997-09-08 | 1999-03-15 | Car seat belt wind-up device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1178786A JPH1178786A (en) | 1999-03-23 |
| JP3524726B2 true JP3524726B2 (en) | 2004-05-10 |
Family
ID=26440108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24298697A Expired - Lifetime JP3524726B2 (en) | 1997-09-08 | 1997-09-08 | Automotive seat belt winding device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3524726B2 (en) |
| WO (1) | WO2000055018A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100445140C (en) * | 2006-12-16 | 2008-12-24 | 张学栋 | Reversal drawing resistant controller of automobile safety belt |
| CN103963737B (en) * | 2013-01-29 | 2016-12-28 | 上海和励信息科技有限公司 | Coiler, end cap, annular gear ring and seat belt assembly for seat belt |
| CN115520137A (en) * | 2022-10-08 | 2022-12-27 | 吉林大学 | Self-adaptive partitioned negative Poisson ratio safety belt according with human body biomechanics |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5751155Y2 (en) * | 1978-05-15 | 1982-11-08 | ||
| JPS5898257U (en) * | 1981-12-25 | 1983-07-04 | トヨタ自動車株式会社 | seat belt device |
| JPH0651028U (en) * | 1992-12-22 | 1994-07-12 | 日本精工株式会社 | Seat belt retractor |
-
1997
- 1997-09-08 JP JP24298697A patent/JP3524726B2/en not_active Expired - Lifetime
-
1999
- 1999-03-15 WO PCT/JP1999/001241 patent/WO2000055018A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000055018A1 (en) | 2000-09-21 |
| JPH1178786A (en) | 1999-03-23 |
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