JPH01174267U

JPH01174267U -

Info

Publication number: JPH01174267U
Application number: JP7097588U
Authority: JP
Priority date: 1988-05-31
Filing date: 1988-05-31
Publication date: 1989-12-11

Description

[Brief explanation of drawings]

第１図はこの考案の緊急ロツク装置を適用した
シートベルト用リトラクタの全体構成を示す分解
斜視図、第２図はこの考案の第一実施例による慣
性振子の側面図、第３図は第一実施例における他
の例を示す慣性振子の断面図、第４図ないし第６
図は慣性振子とボツクスとの接触面積を減少させ
た第二実施例を示す斜視図、第７図はこの考案を
振動に応じた接触離間のない状態とした場合の第
三実施例を示す側面断面図、第８図は従来の緊急
ロツク装置の側面断面図である。１４……ベルト巻取用シヤフト、２４……カム
ホイール、２４ａ……ロツク歯、１６……緊急ロ
ツク装置、３２……ボツクス、３４……慣性振子
、３６……アーム、４０……ピボツト、４２……
ロツクレバー、４４……爪部、５０，６２……緩
衝用リング、６０……緩衝用プレート、７０，７
２，７４……凹凸（７０……スプライン状凹凸、
７２……メツシユ状凹凸、７４……スリツト）、
８４……消音アーム。 FIG. 1 is an exploded perspective view showing the overall configuration of a seatbelt retractor to which the emergency locking device of this invention is applied, FIG. 2 is a side view of an inertial pendulum according to the first embodiment of this invention, and FIG. Cross-sectional views of inertial pendulums showing other examples in the embodiment, FIGS. 4 to 6
The figure is a perspective view showing a second embodiment in which the contact area between the inertial pendulum and the box is reduced, and FIG. 8 is a side sectional view of a conventional emergency lock device. 14... Belt winding shaft, 24... Cam wheel, 24a... Lock tooth, 16... Emergency lock device, 32... Box, 34... Inertia pendulum, 36... Arm, 40... Pivot, 42 ……
Lock lever, 44...Claw portion, 50, 62...Buffer ring, 60...Buffer plate, 70,7
2,74...Unevenness (70...Spline-like unevenness,
72... mesh-like unevenness, 74... slit),
84...Sound deadening arm.

Claims

[Claims for Utility Model Registration] (1) A metal inertial pendulum that is surrounded and supported in a synthetic resin box and swings by sensing acceleration/deceleration, and one end of the inertial pendulum that is in contact with the upper part of the inertial pendulum. The inertia pendulum swings in accordance with a predetermined acceleration/deceleration. A seatbelt retractor is provided in which a lock lever is flipped up as a result of this swinging motion, and its swinging end engages with lock teeth formed on the outer periphery of a cam wheel to prevent rotation of the shaft. 1. An emergency locking device for a seatbelt retractor, characterized in that a buffer member is interposed at a contact portion between the inertial pendulum, the lock lever, and the box. (2) The emergency locking device for a seatbelt retractor according to claim 1, wherein the inner side of the box is formed with unevenness for reducing a contact area with the inertial pendulum. (3) A sound damping arm is disposed above the lock lever and is swingable so as to intersect with the lock lever, so that the lock lever is pressed against the inertial pendulum when the acceleration/deceleration is below a predetermined acceleration/deceleration value. An emergency locking device for a seatbelt retractor according to claim 1 or 2.