Toothless synchronizing ring and synchronizer

Abstract

The invention discloses a synchronizer. The synchronizer comprises a tooth holder, wherein a joint tooth sleeve is sleeved on the tooth holder and is movably connected with the tooth holder through a spline; toothless synchronizing rings are arranged on both sides of the tooth holder; inner conical surfaces of the toothless synchronizing rings are in floating connection with outer conical surfaces of conical rings; a joint tooth ring is connected with the end face of each conical ring through an end face groove of the joint tooth holder in a spline matching manner; each toothless synchronizing ring comprises an annular basal body; each basal body is provided with an inner conical hole; one end of each basal body at a large-diameter end of the corresponding inner conical hole is provided with a flange end; at least three locking grooves are uniformly distributed on the outer circumferential edge of each basal body along the axial direction; the grooves are stepped; locking bumps are provided with wide tooth-shaped convex parts; after the locking bumps are embedded in the grooves, the wide tooth-shaped convex parts are positioned on the outer circumferential surface of the flange and protrude outwards along the radial direction. A circle of spline teeth on the flange end of the synchronizing ring are substituted by a small amount of locking bumps, and the locking bumps and the basal bodies of the synchronizing rings are made into split structures, so that the toothlessness of the synchronizing structure is realized, and further the structures and the manufacturing of the synchronizing ring and the synchronizer are simplified.

Description

technical field [0001] The invention relates to a synchronizer of an automobile gearbox, in particular to a toothless synchronous ring in an inertial synchronizer and a synchronizer adopting the toothless synchronous ring. Background technique [0002] The automobile synchronizer is a key part of the mechanical gear transmission transmission. Using the synchronizer to shift gears is light and flexible, and can avoid inter-tooth impact. At present, the commonly used inertial synchronizer is mainly composed of engaging tooth sleeves, synchronizing rings, tooth seats, etc., relying on the inner cone surface of the synchronizing ring to contact the outer cone surface of the gear ring to be engaged to generate friction, and through the friction of the cone surface, the tooth sleeve to be engaged Synchronizes quickly with the ring gear and at the same time creates a locking effect that prevents the gears from meshing prior to synchronization. It can be seen that the synchronizing...

AI Technical Summary

Problems solved by technology

In the existing synchronizer, the structure of the synchronous ring is as follows figure 1 As shown, the base body 100 comprising a circular ring is provided with an inner tapered hole 200, and the end side of the base body 100 located at the large diameter end of the inner tapered hole 200 has a flange part 1001, and the outer circumference of the flange part 1001 is provided with There are spline teeth 300, and the spline teeth 300 and the spline teeth of the gear holder in the synchronizer are oppositely connected to each other, and the spline teeth of the joint gear sleeve can be in the tooth grooves between the spline teeth of the gear holder and the splines of the synchronizer ring Slip in the tooth groove between the teeth 300, this synchronous ring structure can transmit large torque and has good dynamic coupling guidance, but there is a ring of spline teeth on the flange part of the base body with an inner tapered hole, The manufacturing process is more complicated, sometimes special equipment is required, and the cost is higher

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