JPS5942282Y2 - seat belt clamp device - Google Patents
seat belt clamp deviceInfo
- Publication number
- JPS5942282Y2 JPS5942282Y2 JP14267781U JP14267781U JPS5942282Y2 JP S5942282 Y2 JPS5942282 Y2 JP S5942282Y2 JP 14267781 U JP14267781 U JP 14267781U JP 14267781 U JP14267781 U JP 14267781U JP S5942282 Y2 JPS5942282 Y2 JP S5942282Y2
- Authority
- JP
- Japan
- Prior art keywords
- belt
- tooth
- seat belt
- roller
- shaped
- 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
Links
Landscapes
- Automotive Seat Belt Assembly (AREA)
Description
【考案の詳細な説明】
本考案はシートベルト装置、特に、緊急時ベルト巻取リ
ールからの余分なベルト延び出しを防止するベルトクラ
ンプ装置の改良に係り、ベルト転向用凹凸ローラの突条
係合歯とベルト表面との接触によるシートベルトの切断
を防止することを企図したものである。[Detailed description of the invention] The present invention relates to an improvement of a seat belt device, particularly a belt clamp device that prevents excess belt extension from a belt take-up reel in an emergency. This is intended to prevent the seat belt from being cut due to contact between the teeth and the belt surface.
従来、シートベルト巻取装置においては通常。Conventionally, this is normal in seat belt retractors.
緊急ロック機構が採用されているが、ベルトウェブ自体
の伸びとか巻締りのためベルトに強い引出力が作用する
とロック機構によりベルトの引出しが抑止されても引出
しが完全に阻止される迄にはなお相当の延び出しがあり
、折角のロックもその効果が減殺されている状況である
。An emergency locking mechanism is adopted, but if a strong pulling force is applied to the belt due to stretching of the belt web itself or tightening, even if the locking mechanism prevents the belt from being pulled out, it may still be difficult to completely prevent the belt from being pulled out. There is a considerable amount of extension, and the effect of the long-awaited lock is being diminished.
殊に、この延び出しは意外に大きく、ロック効果に影響
を及ぼすため、これを抑止するために種種の機構が提案
されているが、その多くは引張り強力が耐えられず滑る
か又はベルトの切断を招来する有様であり、一方、引張
り強力に耐えられるものはベルトへの喰い込みがきつく
仲々離れず。In particular, this extension is unexpectedly large and affects the locking effect, so various mechanisms have been proposed to prevent this, but most of them cannot withstand the tensile force and cause the belt to slip or break. On the other hand, those that can withstand strong tensile strength are wedged tightly into the belt and do not separate.
元に戻す場合にその都度手で戻す必要があって実質的に
作動不能とする欠点を有していた。This has the drawback that it is necessary to manually return it each time it is returned to its original position, making it virtually inoperable.
そのため、本考案者はかかる実状に鑑み、それら既知の
クランプ装置の欠点を是正し、簡単な機構でベルトの延
び出し抑制を確実ならしめるべく、先に、第1図に示す
如くリトラクタ−1のコ字状フレーム2の側壁間に亘設
した巻取リール3から引き出されたベルト4の引出し側
にベルト4を巻掛けて転向させる外周に複数の歯形突状
5を備えた凹凸ローラ6を設けると共に、前記巻取リー
ル3の下部に設けた緊急ロック機構Iがり−ル30回転
を規制してベルト4の引出し張力が増加したとき、固定
歯8と可動歯9とからなるベルト挟持機構10を作動さ
せる如く、前記コ字状フレーム2に穿った長孔11に沿
って前記凹凸ローラ6が移動し得るようCしたベルトラ
ンプ装置を提案し九
ところが、このクランプ装置では、凹凸ローラ6の歯形
突条5がベルト挾持機構10の可動歯9背面に設けた凹
凸嵌合部12と係合しながら可動歯9を矢印Xで示す如
く固定歯8側に押圧し、各部材に設けた対向する保合歯
13.14間でベルト4を挾持すると共に、回転を規制
した凹凸ローラ6の表面とベルト4との摩擦力でベルト
4の延び出しを規制するようになっているため、ベルト
4の張力増加時に凹凸ローラ6の歯先部分に応力が集中
し、また、ベルト4が凹凸ローラ6の歯形突条5の先端
で折曲していることから、該部分での摩擦力が増大して
ベルト4が切断するという問題があった。Therefore, in view of the actual situation, the inventor of the present invention first developed a retractor 1 as shown in FIG. An uneven roller 6 having a plurality of tooth-shaped protrusions 5 on the outer periphery is provided for winding and turning the belt 4 on the pull-out side of the belt 4 pulled out from the take-up reel 3 installed between the side walls of the U-shaped frame 2. At the same time, when the emergency locking mechanism I provided at the bottom of the take-up reel 3 restricts the rotation of the reel 30 and the pull-out tension of the belt 4 increases, the belt clamping mechanism 10 consisting of fixed teeth 8 and movable teeth 9 is activated. A C-shaped belt lamp device has been proposed so that the uneven roller 6 can move along the elongated hole 11 bored in the U-shaped frame 2 when the belt is actuated. The strip 5 presses the movable tooth 9 toward the fixed tooth 8 side as shown by arrow The belt 4 is held between the teeth 13 and 14, and the extension of the belt 4 is restricted by the frictional force between the belt 4 and the surface of the uneven roller 6 whose rotation is restricted, so that the tension of the belt 4 is reduced. At the time of increase, stress concentrates on the tip of the teeth of the uneven roller 6, and since the belt 4 is bent at the tip of the tooth-shaped protrusion 5 of the uneven roller 6, the frictional force in this area increases and the belt There was a problem that 4 was disconnected.
本考案はかかる既存のシートベルトクランプ装置の持つ
ベルト切断の問題に留意し、更にこれを克服してより安
全性の高いシートベルトクランプ装置を提供すべくなさ
れたもので、前述した装置の凹凸ローラの外周に形成し
た歯形突条の歯先をその両辺の中間部を通る仮想円筒面
に従って切欠し、かつ、該切欠面に粗面加工を施すか、
又は凹溝を穿設した構成を特徴とするものである。The present invention has been made in consideration of the belt cutting problem of existing seat belt clamp devices, and has been made to overcome this problem and provide a seat belt clamp device with higher safety. The tips of the tooth-shaped protrusions formed on the outer periphery of the teeth are notched according to an imaginary cylindrical surface passing through the middle part of both sides, and the notched surfaces are roughened, or
Alternatively, it is characterized by a configuration in which a groove is bored.
以下、本考案の具体的内容を添付図面に示す実施例を参
照しつつ詳細に説明すると、第2図は本考案のクランプ
装置に用いる凹凸ローラの部分拡大側面図で、図に釦い
て、15は中心に回転軸挿通孔16を穿設した凹凸ロー
ラであって第1図に図示したようにリトラクタ−の巻取
リール下方で引き出されたベルトを巻きかけて方向を転
向すべく配置されており、該凹凸ローラ15の外周面に
は1図示の如くその回転軸と並行して複数の歯形突条1
7が等間隔に設けられている。Hereinafter, the specific contents of the present invention will be explained in detail with reference to the embodiments shown in the attached drawings. Fig. 2 is a partially enlarged side view of the uneven roller used in the clamping device of the present invention. is an uneven roller having a rotary shaft insertion hole 16 in the center, and as shown in FIG. 1, it is arranged so that the belt pulled out below the take-up reel of the retractor can be wound around it to change its direction. As shown in the figure, a plurality of tooth-shaped protrusions 1 are provided on the outer peripheral surface of the uneven roller 15 in parallel with its rotation axis.
7 are provided at equal intervals.
そしてこの凹凸ロー215の各歯形突条17の歯先にお
いては、これを形成する両辺18.19の中間部を通る
仮想円筒面20に従って歯先側が切欠されていると共に
、切欠面21にあっては、溝底角度θが90°に設定さ
れたV形の凹溝22,22が所定の深さdで1条宛形成
されており、更に前記切欠面21にはローレット加工の
如き粗面加工が施され、接触するベルトとの摩擦力の増
大が図られている。The tip of each tooth profile ridge 17 of this concave-convex row 215 is notched on the tip side according to a virtual cylindrical surface 20 that passes through the middle of both sides 18 and 19 forming this, and is located on the notch surface 21. , V-shaped concave grooves 22, 22 with a groove bottom angle θ of 90° are formed one by one at a predetermined depth d, and the cutout surface 21 is further roughened by knurling. is applied to increase the frictional force with the contacting belt.
第3図は上記本考案の要部に係る他の実施例を示したも
ので、前記第2図の凹凸ローラ15が歯形突条17先端
の切欠面21に1条のV凹溝22を設けていたのに対し
、2条のV形凹溝22.22を並行して設けて釦す、こ
の場合にも各V形凹溝22形成部分以外の切欠面にはロ
ーレット加工が施されている。FIG. 3 shows another embodiment of the main part of the present invention, in which the uneven roller 15 shown in FIG. In contrast, two V-shaped grooves 22, 22 are provided in parallel to press the button, and in this case, the cutout surface other than the part where each V-shaped groove 22 is formed is knurled. .
しかし勿論、凹溝の形成とローレット加工とは倒れか一
方だけでもよく、夫々の場合において1条又は複数の凹
溝のみとするか、更にローレット加工のみ又は両者の併
用とするかを選択実施する。However, of course, the formation of grooves and the knurling may be performed only on one side or the other, and in each case, it is necessary to select whether to form only one groove or a plurality of grooves, only knurling, or a combination of both. .
本考案のシートベルトクランプ装置は叙上の如き構成か
らなるものであるが、次にその作用を前記第1図に示し
たりトラクター1に本考案のベルトフランツ装置を適用
した場合について説明すると、先ず、車体の急傾斜ある
いはベルトの急な引出しにより緊急ロック機構7が作動
し、巻取り−ル3の引き出し方向の回動を制限すると、
ベルト4に加わる張力が増し、凹凸ローラ15が長孔1
1に沿って上方に引き上げられ、該凹凸ローラ15外周
の歯形突条1Tが可動歯9側の凹凸嵌合部12に嵌合し
ながら、該可動歯9を固定歯8側に押圧し、固定歯8の
挾持歯13と可動歯9側の挾持歯14との間にベルト4
を挾持して、該ベルト4の延び出しを抑止制限する。The seat belt clamping device of the present invention has the above-mentioned configuration.Next, its operation is shown in FIG. When the emergency locking mechanism 7 is activated due to a sudden tilt of the vehicle body or sudden withdrawal of the belt, and the rotation of the take-up rule 3 in the withdrawal direction is restricted,
The tension applied to the belt 4 increases, and the uneven roller 15 moves to the elongated hole 1.
1, and while the tooth-shaped protrusion 1T on the outer periphery of the uneven roller 15 fits into the uneven fitting part 12 on the movable tooth 9 side, the movable tooth 9 is pressed toward the fixed tooth 8 side and fixed. The belt 4 is placed between the clamping tooth 13 of the tooth 8 and the clamping tooth 14 on the movable tooth 9 side.
The extension of the belt 4 is restrained and limited by holding the belt 4 between the belts 4 and 4.
このとき、ベルト4は可動歯9との係合により回転がI
IJされた凹凸ローラ15の歯形突条と接触しながら、
ベルト引出し方向に摺動しようとするが、本考案にあっ
ては突条の歯先が切欠されていることから歯形突条1T
の切欠面21に設けたV形凹溝22および粗面加工され
た切欠面21との摩擦により、大きな引出し抑制力が生
じると共に、更に歯先が該V溝22により複数に分割さ
れていることによりベルト4に加わる応力が分割された
複数の接触部に分散し、ベルト4に対する歯先の摺擦作
用が減殺され、ベルトの切断が未然に防止されることに
なる。At this time, the rotation of the belt 4 is caused by the engagement with the movable teeth 9.
While in contact with the tooth-shaped protrusion of the IJ uneven roller 15,
The belt tries to slide in the direction of pulling out the belt, but in the present invention, since the tips of the teeth of the protrusions are notched, the tooth-shaped protrusions 1T
Friction between the V-shaped groove 22 provided on the notch surface 21 and the roughened notch surface 21 generates a large pulling-out restraining force, and the tooth tip is further divided into a plurality of parts by the V-groove 22. As a result, the stress applied to the belt 4 is dispersed to a plurality of divided contact portions, the sliding action of the tooth tips on the belt 4 is reduced, and breakage of the belt is prevented.
ナか本考案のシートベルトクランプ装置を実際のりトラ
クターに組み込んでテストを行ったところ、第1図形状
の凹凸ローラを用いたものは、約1000Kg程度の荷
重でベルトが切断したのに比較し、本考案のクランプ装
置を用いたものは2000に9の荷重に至る昔でベルト
切れを生じないことが認められた。When the seat belt clamp device of this invention was installed in an actual tractor and tested, the belt broke with a load of about 1000 kg compared to the one using the uneven roller of the shape shown in Figure 1. It has been found that belts using the clamping device of the present invention do not break even under loads up to 9 in 2000.
叙上の本考案クランプ装置は、通常パッシブベルト装置
において、例えば車体中央側のトルネル内又は近傍など
に位置して配置され、肩ベルト又は腰ベルト若しくはコ
ントロールベルトのクランプ装置として乗員の安全を図
るために使用される。The above-mentioned clamping device of the present invention is normally placed in a passive belt device, for example, in or near a tunnel on the center side of a vehicle body, and is used as a clamping device for shoulder belts, waist belts, or control belts to ensure occupant safety. used for.
以上述べた如く本考案装置はベルトの引出し方向を転向
し、ベルトの張力に応じてベルト挾持機構を作動させる
凹凸ローラの外周歯形突条を、該突条の両辺の中間部を
通る仮想円筒面に従って切欠し、該歯先切欠面に粗面加
工を施すか、又は凹溝を穿設したものであるから、緊急
ロック時のベルト延び出しにおいても、ベルトの凹凸ロ
ーラへの接触は応力の集中が回避され、従来のクランプ
装置の凹凸ローラに見られたような歯形突条の歯先部に
ベルトが接触して、大きく折り曲げられ、該部分に応力
が集中し、極めて大きな摩擦力が生じてベルトを切断さ
せる如き不都合を避けることが可能となり、ベルト切断
機会を減少し、緊急ロック機構によるベルト引出し阻止
効果と相俟って、シートベルトによる乗員の安全確保を
一層完全ならしめるすぐ力た効果が期待される。As described above, the device of the present invention reverses the direction in which the belt is pulled out and moves the toothed protrusion on the outer periphery of the uneven roller that operates the belt clamping mechanism according to the tension of the belt to the virtual cylindrical surface passing through the middle part of both sides of the protrusion. Since the tooth tips are notched and the notched surfaces of the tooth tips are roughened or grooved, even when the belt extends during emergency locking, the contact of the belt with the uneven rollers will cause stress concentration. This prevents the belt from coming into contact with the tips of the toothed protrusions found on the uneven rollers of conventional clamping devices, bending it significantly, and causing stress to concentrate in this area, resulting in an extremely large frictional force. This makes it possible to avoid inconveniences such as belt breakage, reduces the chance of belt breakage, and, together with the emergency locking mechanism's effect of preventing belt pull-out, has the immediate effect of further perfecting occupant safety through seatbelts. There is expected.
第1図は従来の凹凸ローラを使円したクランプ装置を組
み込んだリトラクメーの概要図、第2図は本考案クラン
プ装置に適用可能な凹凸ローラの部分拡大側面図、第3
図は同装置に適用可能な凹凸ローラの他の実施例を示す
部分拡大側面図である。
1・・・・・・リトラクタ−14・・・・・・シートベ
ルト、10・・・・・・ベルト挾持機構、15・・・・
・・凹凸ローラ、17・・・・・・歯形突条、20・・
−・・仮想円筒面、21・・・・・・切欠面、22・・
・・・・凹溝(V形量溝)。Fig. 1 is a schematic diagram of a retrakume incorporating a conventional clamping device using an uneven roller, Fig. 2 is a partially enlarged side view of an uneven roller applicable to the clamping device of the present invention, and Fig. 3
The figure is a partially enlarged side view showing another embodiment of the uneven roller applicable to the same device. 1...Retractor-14...Seat belt, 10...Belt clamping mechanism, 15...
...Concave and convex roller, 17...Tooth-shaped protrusion, 20...
-... Virtual cylindrical surface, 21... Notch surface, 22...
... Concave groove (V-shaped groove).
Claims (1)
向を転向させる如く設けられ、前記ベルトの引出し張力
に応じて移動可能で、ローラ外周に歯形突条を有し、緊
急時ベルト引出し張力の増大によって移動し、ベルト挾
持機構を作動させる凹凸ローラを備えたシートベルトク
ランプ装置の前記凹凸ローラに訃いて、前記歯形突条先
端を、該突条を形成する両辺の中間部を通る仮想円筒面
に従って切欠し、かつ、該切欠崩に粗面加工を施すか、
又は凹溝を穿設したことを特徴とするシートベルトクラ
ンプ装置。 2 凹凸ローラの歯先切欠面に1個又は複数の所要深さ
のV形凹溝が設けられる実用新案登録請求の範囲第1項
記載のシートベルトクランプ装置。 3 凹凸ローラの歯先切欠面にローレット加工を施した
実用新案登録請求の範囲第1項又は第2項記載のシート
ベルトクランプ装置。[Claims for Utility Model Registration] 1. A retractor provided on the belt drawer side of the retractor so as to turn the direction of movement of the belt, movable in accordance with the belt drawer tension, and having tooth-shaped protrusions on the outer periphery of the roller; In a seatbelt clamping device equipped with a concave and convex roller that moves in response to an increase in tension for pulling out the belt in an emergency and activates a belt clamping mechanism, the tip of the tooth-shaped protrusion is placed in the middle of both sides forming the protrusion. A notch is made according to a virtual cylindrical surface passing through the part, and the notch is roughened, or
Or a seat belt clamp device characterized by having a groove formed therein. 2. The seat belt clamping device according to claim 1, wherein one or more V-shaped grooves of a required depth are provided in the notched surface of the tooth tip of the uneven roller. 3. The seat belt clamp device according to claim 1 or 2, wherein the notched surface of the tooth tip of the uneven roller is knurled.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14267781U JPS5942282Y2 (en) | 1981-09-28 | 1981-09-28 | seat belt clamp device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14267781U JPS5942282Y2 (en) | 1981-09-28 | 1981-09-28 | seat belt clamp device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5848258U JPS5848258U (en) | 1983-04-01 |
JPS5942282Y2 true JPS5942282Y2 (en) | 1984-12-10 |
Family
ID=29935698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14267781U Expired JPS5942282Y2 (en) | 1981-09-28 | 1981-09-28 | seat belt clamp device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5942282Y2 (en) |
-
1981
- 1981-09-28 JP JP14267781U patent/JPS5942282Y2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5848258U (en) | 1983-04-01 |
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