Webbing Take-Up Device

There is provided a webbing take-up device in which a load required to rotate a spool (22) in a webbing drawing direction with reference to a shaft (30) is stabilized in the process of rotating the spool (22), a stable load can be achieved with small deformation, and miniaturization can be achieved....

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Bibliographic Details
Main Authors KATO, KEIICHI, TSUKIYAMA, NAOHIRO, HORI, SEIJI, SASAKI, SUMIKAZU, KITAZAWA, YASUHO, MATSUI, KENJI
Format Patent
LanguageEnglish
French
Published 17.04.1997
Edition6
Subjects
BLASTING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MEANS FOR DAMPING VIBRATION
MECHANICAL ENGINEERING
PERFORMING OPERATIONS
SHOCK-ABSORBERS
SPRINGS
THERMAL INSULATION IN GENERAL
TRANSPORTING
VEHICLES IN GENERAL
VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
WEAPONS
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Summary:There is provided a webbing take-up device in which a load required to rotate a spool (22) in a webbing drawing direction with reference to a shaft (30) is stabilized in the process of rotating the spool (22), a stable load can be achieved with small deformation, and miniaturization can be achieved. In an ordinary state, an EA plate (62) keeps its original shape, and the shaft (30) and spool (22) are rotated together. When the shaft (30) is prevented from being rotated in the webbing drawing direction in vehicle sudden deceleration, the EA plate (68) is plastically deformed by a webbing drawing force, and the EA plate (68) is pushed in an internal-angle portion (70) of the spool (22) with rotation of the spool (22) in the webbing drawing direction with reference to the shaft (30). The EA plate (68) is bent by a U-shaped portion (76) and then wound around the outer periphery of the shaft (30). The other end portion of the EA plate (68) is pushed into the internal-angle portion (72) at a winding start end portion of the EA plate (68) around the shaft (30) to prevent the subsequential rotation of the spool (22) in the webbing drawing direction with reference to the shaft (30). Thus, when the webbing is prevented from being drawn, the webbing is drawn by a predetermined length, and energy absorption can be achieved.
Bibliography:Application Number: CA19962174389