FIELD: machine building.
SUBSTANCE: invention relates to toothed clutches for locking differential. Coupling consists of two half-couplings with end teeth (1), movable half-coupling (2) installed on splines of semi-axle (3) and fixed half-coupling (40) connected or combined with cup (5) of differential. In the cavity at the base of end teeth (1) of the movable and fixed half-couplings (2 and 4) there are grooves (6) having the following ratio of sizes: r = from h to 5h, where: r is the half-coupling face tooth groove radius, h is the groove height made in the half-clutch end tooth base.
EFFECT: increased bending strength of teeth of half-couplings.
1 cl, 6 dwg
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