WO2013099590A1 - ロッキングタング - Google Patents
ロッキングタング Download PDFInfo
- Publication number
- WO2013099590A1 WO2013099590A1 PCT/JP2012/082077 JP2012082077W WO2013099590A1 WO 2013099590 A1 WO2013099590 A1 WO 2013099590A1 JP 2012082077 W JP2012082077 W JP 2012082077W WO 2013099590 A1 WO2013099590 A1 WO 2013099590A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- webbing
- insertion hole
- tongue
- lock member
- lock
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B11/00—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts
- A44B11/25—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts with two or more separable parts
- A44B11/2503—Safety buckles
- A44B11/2546—Details
- A44B11/2553—Attachment of buckle to strap
-
- 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
- B60R22/18—Anchoring devices
-
- 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
- B60R22/18—Anchoring devices
- B60R2022/1812—Connections between seat belt and buckle tongue
Definitions
- the present invention relates to a locking tongue, and more particularly to a locking tongue that is detachably coupled to a buckle of a seat belt device.
- a so-called three-point seat belt device for protecting a driver and / or a passenger at the time of a vehicle collision in a vehicle such as an automobile has been proposed.
- a three-point seat belt device when the tongue is properly coupled to the buckle, a lap belt that extends across the waist of the occupant sitting in the seat and a shoulder belt that extends across the chest of the occupant Protects passengers.
- the webbing can usually be pulled out freely from the retractor, and the occupant is fastened in place.
- the retractor is locked by, for example, an inertia mechanism to prevent the webbing from being pulled out further.
- the webbing securely holds the occupant in place on the seat during a collision.
- the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a locking tongue with improved clamping performance at the time of a vehicle collision.
- a tongue body that can be coupled to the buckle and has at least two webbing insertion holes through which the webbing is inserted;
- the tongue main body is movably held between the release position separated from the first webbing insertion hole and the lock position approaching the first webbing insertion hole, and moves to the lock position, thereby moving the first A locking member that clamps the webbing that is inserted into the webbing insertion hole and prevents the movement of the webbing,
- the rocking tongue, wherein the first webbing insertion hole has a trapezoidal shape in which the length of one of the longitudinal side walls of the two opposing longitudinal side walls along the width direction of the webbing is increased.
- the locking tongue according to (1) wherein the one long side wall is a first long side wall closer to the lock member when the lock member is located at a release position.
- the first longitudinal side wall is inclined toward the side closer to the lock member when the lock member is located at the release position at both ends in the width direction of the webbing as it goes outward in the width direction.
- the locking tongue according to (2) characterized in that (4)
- the tongue main body has a positioning portion for positioning the lock member at the release position, In any one of (1) to (3), when the force greater than a predetermined value acts on the webbing, the lock member releases the positioning by the positioning portion and moves to the lock position.
- the tongue main body includes a tongue plate having an opening to which a buckle is coupled, and a resin mold that partially covers the tongue plate and forms the webbing insertion hole.
- the positioning part is a protrusion formed integrally by the resin mold,
- the locking tongue according to (4), wherein the locking member breaks the protrusion and moves to the locking position when a force of a predetermined value or more is applied to the webbing.
- It further includes a biasing member that biases the lock member toward the release position so that the lock member is located at the release position during normal use. Any one of (1) to (3), wherein the lock member moves to the lock position against a biasing force of the biasing member when a force of a predetermined value or more is applied to the webbing. Locking tongue according to crab.
- the urging member is a wire-like spring member having a curved middle part
- the lock member has an intermediate portion holding portion for holding an intermediate portion of the spring member
- the tongue main body is formed with a second webbing insertion hole through which the webbing inserted through the first webbing insertion hole is inserted, and
- the tongue main body has a curved portion in which the first webbing insertion hole and the second webbing insertion hole are formed,
- the lock member is rotatably supported by an inner guide surface of the curved portion located between the first webbing insertion hole and the second webbing insertion hole, and the first webbing insertion hole.
- the locking tongue according to any one of (1) to (7), wherein the locking tongue is in contact with the webbing positioned between the second webbing insertion hole and the second webbing insertion hole.
- a seat belt device comprising the locking tongue according to any one of (1) to (8).
- the first webbing insertion hole has a trapezoidal shape in which one of the two longitudinal side walls facing each other along the width direction of the webbing is elongated. Even in this case, the webbing is prevented from being folded back, so that it can be reliably locked at the time of a vehicle collision. In addition, since only the shape of the first webbing insertion hole is changed, it is possible to improve the clamping performance without increasing the cost.
- FIG. 4 is an exploded perspective view in which a locking bar is removed from the tongue main body of FIG. 3.
- A) is sectional drawing which shows the locking tongue at the time of normal use
- (b) is sectional drawing which shows the locking tongue at the time of a lock
- FIG. 8 is an exploded perspective view in which a locking bar and a spring are removed from the tongue main body of FIG. 7.
- A) is a figure corresponding to Drawing 6
- (b) which shows a webbing penetration hole where webbing turns up
- (b) is a figure corresponding to Drawing 2 showing a state where webbing turned up.
- FIG. 1 shows an example of a three-point seat belt device 1 to which a locking tongue 10 is applied.
- the seat belt device 1 includes a retractor 2 attached to a floor on one side with respect to a vehicle seat (not shown).
- One end of the webbing 3 is wound around a spring-biased inertia reel inside the retractor 2, and the other end of the webbing 3 is fixed to the vehicle body by a lap anchor 4.
- a locking tongue 10 is slidably provided on the webbing 3, and the locking tongue 10 is attached to and detached from a buckle 7 provided on the opposite side of the retractor 2 with respect to the seat. Combined as possible.
- the webbing 3 extends substantially vertically upward from the retractor 2 to the shoulder anchor 5.
- the webbing 3 extends obliquely downward from the shoulder anchor 5 to the buckle 7 and constitutes a shoulder belt 6 that is slanted from the shoulder portion to the waist portion of the occupant.
- the webbing 3 extends in the vehicle width direction from the buckle 7 to the lap anchor 4 and constitutes a lap belt 8 straddling the occupant's waist.
- the locking tongue 10 can be coupled to the buckle 7 and is also connected to the shoulder side webbing insertion hole (first webbing insertion hole) 12 through which the webbing 3 is inserted and the waist side webbing insertion.
- first webbing insertion hole first webbing insertion hole
- second webbing insertion hole a hole spaced from the shoulder-side webbing insertion hole 12
- lock position approaching (or closing) the shoulder-side webbing insertion hole 12.
- a lock member 30 that clamps the webbing 3 inserted into the shoulder side webbing insertion hole 12 to prevent the webbing 3 from moving by being held by the tongue main body 11 so as to be movable and moved to the lock position.
- the tongue main body 11 has a metal tongue plate 15 and a resin mold 16 that partially covers the tongue plate 15 and forms two webbing insertion holes 12 and 13. Moreover, the tongue main body 11 is comprised by the flat part 17 which the tongue plate 15 exposes, and the curved part 18 covered with the resin mold 16, and the lock member 30 is arrange
- the flat portion 17 is provided with an opening 14 that engages with a locking element (not shown) provided inside the buckle 7.
- an inner guide surface 19 that supports the lock member 30 in a rotatable manner is formed inside the curved portion 18 located between the two webbing insertion holes 12 and 13, and stands inward on both sides in the width direction.
- a pair of projecting portions (positioning portions) 20 are provided.
- the pair of protrusions 20 are integrally formed with the resin mold 16 and are engaged with a pair of notches 31 formed on both sides in the width direction of the lock member 30 to position the lock member 30 at the release position (FIG. 5). (See (a)).
- the protrusion 20 is designed to be broken when a force of a predetermined value or more is applied from the webbing 3 on the shoulder belt 6 side.
- curved guide portions 32 are formed on both sides of the lock member 30 in the width direction, and the guide portions 32 extend along the curved guide grooves 21 formed on both sides of the curved portion 18 in the width direction. Guided. In addition, the lock member 30 disposed inside the curved portion 18 is in contact with the webbing 3 located between the two webbing insertion holes 12 and 13.
- the locking member 30 is locked by the protrusion 20 of the tongue main body 11 and is positioned at the release position inside the curved portion 18 during normal use.
- the lock member 30 is located at the release position, the webbing 3 can freely move through the two webbing insertion holes 12 and 13 without being restricted.
- the lock member 30 when the locking tongue 10 is attached to the buckle 7 and a force of a predetermined value or more acts on the webbing 3 (that is, the shoulder belt 6 that restrains the upper body of the occupant), such as during a vehicle collision, the lock member 30 is The notch 31 is pressed by the webbing 3 to break the protrusion 20. Further, the lock member 30 moves while the guide portion 32 is guided by the guide groove 21 by the force acting on the webbing 3, contacts the regulating portion 25 of the resin mold 16 via the webbing 3, and moves to the lock position. (See FIG. 5 (b)). Then, when the lock member 30 moves to the lock position, the webbing 3 is clamped to prevent the webbing 3 from moving.
- the webbing 3 is restrained by the lock member 30, so that the tension on the lap belt 8 side is not transmitted to the shoulder belt 6 side.
- the webbing 3 on the lap side is locked, so that all the webbing 3 pulled out is used on the shoulder side. Accordingly, it is possible to avoid unnecessary pressure on the occupant chest by the webbing 3.
- the shoulder-side webbing insertion hole 12 is formed to be slightly longer than the width of the webbing 3, and as shown in FIGS. 6A and 6B, the width direction of the webbing 3.
- the shoulder-side webbing insertion hole 12 has a trapezoidal shape in which two long side walls 22 and 23 are connected by a straight short side wall 24.
- the first longitudinal side wall 23 on the release position side is closer to the lock member 30 when the lock member 30 is positioned at the release position as it goes outward in the width direction at both ends 23a.
- the long side wall 23 and the short side wall 24 form a sharper corner.
- the trapezoidal shape does not only indicate a geometric trapezoid.
- Each side of the trapezoid may include not only a straight line but also a curved line, a circular arc, and other discontinuous lines.
- the shoulder side webbing insertion hole 12 is strictly a polygonal shape or the like, as long as the main sides constituting the shape of the insertion hole constitute a shape close to a trapezoid, the present invention. Included in the trapezoid. For example, as shown in FIG.
- both end portions 22a of the long side wall 22 may be inclined toward the first long side wall 23 side of the lock member 30 toward the outer side in the width direction.
- the webbing insertion hole 12 has a shape in which the two long side walls 22 and 23 have the same length and the short side wall 24 is curved and continuous as shown in FIG.
- the webbing 3 is folded along the curved short side wall 24. Even if the lock member 30 is moved to the lock position in this state, a portion where the webbing 3 cannot be sandwiched is generated, so that the original lock performance may not be exhibited. Further, the folded portion strongly interferes with the lock member 30, and the webbing may be damaged.
- the shoulder-side webbing insertion hole 12 has the locking member 30 of the two longitudinal side walls 22 and 23 facing each other along the width direction of the webbing 3. It has a trapezoidal shape in which the first longitudinal side wall 23 on the side close to the lock member 30 when positioned at the release position becomes long.
- first longitudinal side wall 23 is inclined toward the side closer to the lock member 30 when the lock member 30 is positioned at the release position as it goes outward in the width direction at both end portions 23a. Since 23 and the short side wall 24 constitute a sharper corner, the folding of the webbing 3 and the occurrence of wrinkles can be further suppressed.
- the tongue body 11 includes a tongue plate 15 having an opening 14 to which the buckle 7 is coupled, and a resin mold 16 that partially covers the tongue plate 15 and forms webbing insertion holes 12 and 13.
- the protrusion 20 is integrally formed with the resin mold 16, and the lock member 30 breaks the protrusion 20 and moves to the lock position when a force of a predetermined value or more is applied to the webbing 3. Thereby, positioning of the lock member 30 at the time of normal use can be configured easily.
- the tongue main body 11 is formed with a shoulder-side webbing insertion hole 12 through which the webbing 3 is inserted and a waist-side webbing insertion hole 13, and the tongue main body 11 has a shoulder-side and waist-side webbing insertion hole 12, 13 has a curved portion 18 provided.
- the lock member 30 is rotatably supported by the inner guide surface 19 of the curved portion 18 located between the shoulder side and waist side webbing insertion holes 12 and 13, and the shoulder side and waist side webbing insertion holes Contact the webbing 3 located between 12 and 13.
- (Other embodiments) 7 and 8 show a locking tongue 10 according to another embodiment of the present invention.
- symbol is attached
- This locking tongue 10 is provided with a spring member (biasing member) 40 formed by bending the intermediate portion 41 into a wire shape. That is, in the locking tongue 10, the lock member 30 is positioned at the release position by the spring member 40 instead of the protrusion 20 of the above embodiment.
- the lock member 30 has a pair of guide portions 32a that are guided along the curved guide grooves 21 of the tongue main body 11 on both sides in the width direction. Further, the lock member 30 has an intermediate portion holding portion 33 that holds the intermediate portion 41 of the spring member 40 by curving the end portion near the release position over the entire width direction of the webbing 3.
- the tongue main body 11 has a pair of end holding portions 27 that hold both end portions 42 of the spring member 40 closer to the lock position than the intermediate portion holding portion 33 and a guide portion of the lock member 30 that is located at the release position.
- a support portion 26 that supports 32 a is formed by the resin mold 16.
- the spring member 40 is held by the tongue main body 11 and the lock member 30, and biases the lock member 30 toward the release position so that the lock member 30 is located at the release position during normal use. Further, when a force of a predetermined value or more is applied to the webbing 3 at the time of a vehicle collision or the like, the lock member 30 moves to the lock position against the urging force of the spring member 40, clamps the webbing 3 and clamps the webbing 3. Prevent the movement of.
- the webbing 3 is restrained by the lock member 30, so that the tension on the lap belt 8 side is transmitted to the shoulder belt 6 side. Absent.
- the urging member is not limited to the shape of the spring member 40 of the present embodiment as long as the urging member urges the lock member 30 toward the release position, similarly to the spring member 40.
- this invention is not limited to embodiment mentioned above, A deformation
- the first long side wall 23 is longer than the second long side wall 22 among the two long side walls 22 and 23 facing the shoulder side webbing insertion hole. By setting this, the effect of the present invention can be obtained even when the second longitudinal side wall 22 side is lengthened.
- the seat belt device to which the locking tongue of the present invention is applied is not limited to this, and can be applied to a seat belt device provided with a pretensioner.
- the locking member 30 is positioned at the release position by the protruding portion 20, but the positioning portion of the present invention is not limited to this, and the positioning is released when a force greater than a predetermined value acts on the webbing. Anything to do.
- the specification which provides a notch in the tongue main body 11 and a projection part in the lock member 30 may be sufficient, and the positioning part will be comprised by the notch in that case.
- the locking tongue of the present invention can be applied to a tongue body having one webbing insertion hole, and the same effect can be achieved.
- the present invention is based on a Japanese patent application (Japanese Patent Application No. 2011-283842) filed on Dec. 26, 2011, the contents of which are incorporated herein by reference.
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- Automotive Seat Belt Assembly (AREA)
Abstract
Description
第1のウェビング挿通孔から離間した解放位置と前記第1のウェビング挿通孔に接近したロック位置との間で移動可能に前記タング本体に保持され、前記ロック位置に移動することで、前記第1のウェビング挿通孔に挿通されるウェビングをクランプして前記ウェビングの移動を防止するロック部材と、を有するロッキングタングであって、
前記第1のウェビング挿通孔は、前記ウェビングの幅方向に沿った対向する二つの長手側壁のうち、一方の前記長手側壁の長さが長くなる台形形状を有することを特徴とするロッキングタング。
(2) 前記一方の長手側壁は、前記ロック部材が解放位置に位置するときの前記ロック部材に近い側の第1の長手側壁であることを特徴とする(1)に記載のロッキングタング。
(3) 前記第1の長手側壁は、前記ウェビングの幅方向の両端部において、当該幅方向外側に向かうにつれて前記ロック部材が解放位置に位置するときの前記ロック部材に近い側に向かって傾斜していることを特徴とする(2)に記載のロッキングタング。
(4) 前記タング本体は、前記ロック部材を前記解放位置に位置決めするための位置決め部を有し、
前記ロック部材は、前記ウェビングに所定値以上の力が作用したとき、前記位置決め部による位置決めを解除して、前記ロック位置に移動することを特徴とする(1)から(3)のいずれかに記載のロッキングタング。
(5) 前記タング本体は、バックルが結合される開口部を有するタングプレートと、該タングプレートを部分的に覆い、前記ウェビング挿通孔を形成する樹脂モールドと、を有し、
前記位置決め部は、前記樹脂モールドによって一体形成される突起部であり、
前記ロック部材は、前記ウェビングに所定値以上の力が作用したとき、前記突起部を破断して、前記ロック位置に移動することを特徴とする(4)に記載のロッキングタング。
(6) 通常使用時に前記ロック部材が前記解放位置に位置するように、前記ロック部材を前記解放位置に向けて付勢する付勢部材をさらに有し、
前記ロック部材は、前記ウェビングに所定値以上の力が作用したとき、前記付勢部材の付勢力に抗して、前記ロック位置に移動することを特徴とする(1)から(3)のいずれかに記載のロッキングタング。
(7) 前記付勢部材は、中間部を湾曲されたワイヤ状のばね部材であり、
前記ロック部材は、前記ばね部材の中間部を保持する中間部保持部を有し、
前記タング本体は、前記中間部保持部よりもロック位置寄りで、前記ばね部材の両端部を保持する一対の端部保持部を有することを特徴とする(6)に記載のロッキングタング。
(8) 前記タング本体には、前記第1のウェビング挿通孔に挿通された前記ウェビングが挿通される第2のウェビング挿通孔が形成され、且つ、
前記タング本体は、前記第1のウェビング挿通孔と前記第2のウェビング挿通孔とが形成される湾曲部分を有し、
前記ロック部材は、前記第1のウェビング挿通孔と前記第2のウェビング挿通孔との間に位置する前記湾曲部分の内側案内面によって回転移動可能に支持され、且つ、前記第1のウェビング挿通孔と前記第2のウェビング挿通孔との間に位置する前記ウェビングと接触することを特徴とする(1)から(7)のいずれかに記載のロッキングタング。
(9) (1)~(8)のいずれかに記載のロッキングタングを備えることを特徴とするシートベルト装置。
例えば、図6(d)に示すように、第1の長手側壁23の傾斜した両端部23aと平行に、対向するロック部材30のロック位置側(即ち、規制部25に近い側)の第2の長手側壁22の両端部22aも幅方向外側に向かうにつれてロック部材30の第1の長手側壁23側に傾斜してもよい。
図7及び図8は、本発明の他の実施形態に係るロッキングタング10を示す。なお、上記実施形態と同一または同等部分については、同一または相当符号を付して説明を省略或いは簡略化する。
なお、その他の構成及び作用については、上記実施形態のものと同様である。また、付勢部材としては、ばね部材40と同様に、ロック部材30を解放位置に向けて付勢するものであれば、本実施形態のばね部材40の形状に限定されるものではない。
例えば、本実施形態では、肩部側ウェビング挿通孔の対向する二つの長手側壁22、23のうち、第1の長手側壁23が第2の長手側壁22より長くなる構成としたが、適切に形状を設定することで、第2の長手側壁22の側を長くした場合にも、本発明の効果を得ることが可能である。
また、本発明は、2011年12月26日出願の日本特許出願(特願2011-283842)に基づくものであり、その内容はここに参照として取り込まれる。
3 ウェビング
7 バックル
10 ロッキングタング
11 タング本体
12 肩部側ウェビング挿通孔(第1のウェビング挿通孔)
13 腰部側ウェビング挿通孔(第2のウェビング挿通孔)
14 開口部
15 タングプレート
16 樹脂モールド
17 平坦部分
18 湾曲部分
19 内側案内面
20 突起部(位置決め部)
21 ガイド溝
22,23 長手側壁
24 短手側壁
30 ロック部材
31 ノッチ
32 ガイド部
Claims (9)
- バックルに結合可能であると共に、ウェビングが挿通される少なくとも2つのウェビング挿通孔を有するタング本体と、
第1のウェビング挿通孔から離間した解放位置と前記第1のウェビング挿通孔に接近したロック位置との間で移動可能に前記タング本体に保持され、前記ロック位置に移動することで、前記第1のウェビング挿通孔に挿通されるウェビングをクランプして前記ウェビングの移動を防止するロック部材と、を有するロッキングタングであって、
前記第1のウェビング挿通孔は、前記ウェビングの幅方向に沿った対向する二つの長手側壁のうち、一方の前記長手側壁の長さが長くなる台形形状を有することを特徴とするロッキングタング。 - 前記一方の長手側壁は、前記ロック部材が解放位置に位置するときの前記ロック部材に近い側の第1の長手側壁であることを特徴とする請求項1に記載のロッキングタング。
- 前記第1の長手側壁は、前記ウェビングの幅方向の両端部において、当該幅方向外側に向かうにつれて前記ロック部材が解放位置に位置するときの前記ロック部材に近い側に向かって傾斜していることを特徴とする請求項2に記載のロッキングタング。
- 前記タング本体は、前記ロック部材を前記解放位置に位置決めするための位置決め部を有し、
前記ロック部材は、前記ウェビングに所定値以上の力が作用したとき、前記位置決め部による位置決めを解除して、前記ロック位置に移動することを特徴とする請求項1~3のいずれか1項に記載のロッキングタング。 - 前記タング本体は、バックルが結合される開口部を有するタングプレートと、該タングプレートを部分的に覆い、前記ウェビング挿通孔を形成する樹脂モールドと、を有し、
前記位置決め部は、前記樹脂モールドによって一体形成される突起部であり、
前記ロック部材は、前記ウェビングに所定値以上の力が作用したとき、前記突起部を破断して、前記ロック位置に移動することを特徴とする請求項4に記載のロッキングタング。 - 通常使用時に前記ロック部材が前記解放位置に位置するように、前記ロック部材を前記解放位置に向けて付勢する付勢部材をさらに有し、
前記ロック部材は、前記ウェビングに所定値以上の力が作用したとき、前記付勢部材の付勢力に抗して、前記ロック位置に移動することを特徴とする請求項1~3のいずれか1項に記載のロッキングタング。 - 前記付勢部材は、中間部を湾曲されたワイヤ状のばね部材であり、
前記ロック部材は、前記ばね部材の中間部を保持する中間部保持部を有し、
前記タング本体は、前記中間部保持部よりもロック位置寄りで、前記ばね部材の両端部を保持する一対の端部保持部を有することを特徴とする請求項6に記載のロッキングタング。 - 前記タング本体には、前記第1のウェビング挿通孔に挿通された前記ウェビングが挿通される第2のウェビング挿通孔が形成され、且つ、
前記タング本体は、前記第1のウェビング挿通孔と前記第2のウェビング挿通孔とが形成される湾曲部分を有し、
前記ロック部材は、前記第1のウェビング挿通孔と前記第2のウェビング挿通孔との間に位置する前記湾曲部分の内側案内面によって回転移動可能に支持され、且つ、前記第1のウェビング挿通孔と前記第2のウェビング挿通孔との間に位置する前記ウェビングと接触することを特徴とする請求項1から7のいずれか1項に記載のロッキングタング。 - 請求項1~8のいずれか1項に記載のロッキングタングを備えることを特徴とするシートベルト装置。
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