ES439722A1 - Automatic reel for a safety belt - Google Patents

Abstract

Improvements in automatic belt reels for a seat belt, especially for motor vehicles, with a wraparound box, in which it is supported in a way capable of turning a shaft, by which the seat belt is susceptible of being unwound against force for winding a winding spring, preferably with a first part, which. it is supported on the shaft and that by turning the shaft it is capable of rotating in the winding direction of the seat belt, and with a second part, which can be moved by the first part, in the case of its delay with respect to to the shaft, from an inactive position to a locked position, in which the second part passes into application between the shaft and a part of the casing, in order to prevent relative rotation between these parts in the winding direction of the seat belt, the first part being arranged in such a way that it can be subject to a delay when the seat belt is removed from the belt reel, the first part being an inertia wheel, while the second part is a locking member fashionable locking pawl, which can be applied with one of a plurality of locking teeth, which are disposed next to the surrounding casing part to the locking member, while the first part, structured as an inertia wheel, is provided on its outer periphery for example with teeth, in which the end of a lever movable by a pendulum element is applied, and thus retains to the inertia wheel in the sense of a relative movement, the locking member being capable of being retained by a spring - possibly indirectly - normally in its inactive position, characterized in that the pendulum element is structured in the form of a solid ball arranged so as to be able to roll freely in a spherical segment below the lever, which spherical ball is capable of rolling back and forth or in the spherical segment in the case of certain accelerations, which act on the entire vehicle, and thus preferably tilts the lever resting on the solid ball, against the teeth or on the lever part, provided with n a friction surface, against a corresponding friction surface of the inertia wheel, the locking member being arranged between the reel for winding the belt and the inertia wheel, which is arranged cantilevered on the shaft, and because the inertia wheel has a protruding stub next to its inner surface, which especially runs at right angles to the inertia wheel surface, which stub engages loosely in an oblong hole in the disc-shaped locking member the inertia wheel having at its front side facing outwards several toothed projections grooved in the peripheral direction preferably arranged at equal distances from each other, for example projections arranged somewhat diverging in pairs in each case in the peripheral direction for the possibly adjustable support of one of the ends of the g-value spring that acts on the inertia wheel and indirectly e on the locking member, while the other end of the spring, structured as a spiral spring, is coupled -eventually indirectly- with the shaft, such that the g-value spring is joined by one of the ends , for example by means of a thrust support, indirectly with the shaft, while with the other end it is connected with the inertia wheel, so that the g-value spring acts on the journal indirectly also on the locking member. (Machine-translation by Google Translate, not legally binding)