Emergency locking retractor

An emergency locking retractor comprising:

• a casing;
• a reel supported rotatably on the casing and biased in the webbing-winding direction, said reel including a plurality of cogs which are each equipped with an interlocking face directed in the webbing-releasing direction;
• lock means capable of assuming any one of a locking position where the lock means prevents the reel from rotating in the webbing-releasing direction, an intermediate position where the lock means is in engagement with the interlocking face of one of the cogs of the reel but still allows the reel to rotate to a certain limited extent, and a non-locking position where the lock means is maintained out of engagement from any one of the cogs of the reel;
• first biasing means connected to the lock means and normally holding the lock means at the non-locking position;
• a sensor member for sensing a change in speed applied to the casing;
• transmission means connectable at a part thereof to the reel upon actuation of the sensor member so as to transmit rotation of the reel to the lock means, whereby the lock means is caused to move from the non-locking position to the intermediate position against the first biasing means;
• second biasing means engageable with a part of the transmission means so as to bias the lock means toward the locking position with a force weaker than the first biasing means;
• and
• means for releasing the connection between the lock means and the transmission means when the lock means is forced to move to the locking position by a further slight rotation of the reel subsequent to a displacement of the lock means to the intermediate position by the transmission means, whereby the transmission means is caused to move under the biasing force of the second biasing means so that the connection between the reel and the transmission means is released.

An emergency locking retractor comprising:

• a casing;
• a reel supported rotatably on the casing and biased in the webbing-winding direction, said reel including a plurality of cogs;
• lock means displaceable between an engagement position, where the lock means is maintained in engagement with one of the cogs of the reel, and a non-engagement position where the lock means is maintained out of engagement from any one of the cogs of the reel;
• first biasing means connected to the lock means and normally holding the lock means at the non-engagement position;
• an inertia member supported on the reel, said inertia member being normally rotatable together with the reel but when the revolution speed of the reel has changed beyond a predetermined level, displaceable relative to the reel;
• second biasing means for biasing the inertia member in such a way that the inertia member is normally allowed to rotate together with the reel;
• transmission means connectable at a part thereof to the inertia member, which has undergone a displacement relative to the reel, so as to transmit rotation of the reel to the lock means, the biasing force of said second biasing means acting on the lock means via the transmission means so as to move the lock means towrd the locking position while the inertia member and the transmission means are connected;
• and
• means for releasing the connection between the lock means and the transmission means when the lock means has been caused to move to the engagement position by the transmission means, whereby the transmission means is caused to move under the biasing force of the second biasing means so that the connection between the inertia member and the transmission means is released.

An emergency locking retractor comprising:

• a casing;
• a reel supported rotatably on the casing and biased in the webbing-winding direction, said reel including a plurality of cogs;
• locking means displaceable between an engagement position, where the lock means is maintained in engagement with one of the cogs of the reel, and a non-engagement position where the lock means is maintained out of engagement from any one of the cogs of the reel;
• first biasing means connected to the lock means and normally holding the lock means at the non-engagement position;
• a sensor member for sensing a change in speed applied to the casing;
• transmission means connectable at a part thereof to the reel upon actuation of the sensor member, whereby rotation of the reel is transmitted to the lock means;
• second biasing means engageable with a part of the transmission means so as to bias the lock means toward the engagement position with a force weaker than the first biasing means;
• and
• means for releasing the connection between the lock means and the transmission means when the lock means has been caused to move to the engagement position by the transmission means, whereby the transmission means is cause to move under the biasing force of the second biasing means so that the connection between the reel and the transmission means is released.