Importance

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Abstract

Synchronizing mechanism in a gearbox, preferably a vehicle gearbox, including a synchronizing muff (14) non-rotatably connected to a shaft (1) and coacting with an engagement sleeve (36) surrounding the muff (14), the sleeve being axially displaceable for meshing with teeth (11) on a first synchronizing ring rotatably mounted on the shaft (1), the ring being non-rotatably joined to a gear (6) and formed with a conical friction surface (12) for coaction with a complementary conical friction surface (22) on a second synchronizing ring (21) for synchronizing the rotation of the gear (6) and shaft (1), the periphery of the synchronizing muff (14) being formed with a number of radial recesses (17) in which radial locating abutments (23) on the second synchronizing ring (21) engage. The invention is distinguished in that each locating abutment (23) is formed with a radial hole (24) in which a detent body (25) is displaceably mounted and adapted for being brought by spring means (31,32) into coaction with an interior annular groove (37) in the engagement sleeve (36), the second synchronizing ring (21) being axially centered relative the synchronizing muff (14) by the detent bodies (25) and the spring means (31, 32). The second synchronizing ring is located by the detent bodies (25) and does not require any further fixing, which substantially simplifies the mechanism and decreases the space requirement.

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First Claim