Synchronizers and gearboxes

Abstract

The invention provides a synchronizer and a speed changing box. The synchronizer comprises a gear sleeve, a gear hub, outer conical rings, middle conical rings, inner conical rings, cones, a spring and a pushing block. According to the scheme, on the basis of an existing double-cone synchronizer, conical surfaces for rubbing are added between each inner conical ring and the corresponding cone to form the three-cone synchronizer, so that the synchronization torque is increased on the promise of not increasing the radial size of a product, and gear shifting synchronization time is shortened. According to the scheme, a pocket part which is formed by through holes and / or through grooves is formed in the gear hub, bosses on each outer conical ring and jaws on the corresponding inner conical ring extend into the pocket part, the axial size of the synchronizer can be reduced, the gear shifting travel of the synchronizer is reduced, and therefore, the total gear shifting lever ratio is increased under the condition that a gear shifting distance of a cab is not changed to achieve the purpose of reducing a gear shifting operating force.

Description

technical field [0001] The invention relates to the field of automobile manufacturing, more specifically, to a synchronizer and a gearbox with the synchronizer. Background technique [0002] In order to solve the problem of shifting quality, synchronizers are widely used in the automobile industry. However, in recent years, as the user group becomes younger, the requirements for the shifting performance of the gearbox are getting higher and higher. Since the center distance of the gearbox cannot be made very large, the existing single-cone and double-cone synchronizers The synchronous torque is not large enough, the shift synchronization time is long, and the shift is relatively laborious, which makes the driver feel that the labor intensity is high, so that the existing products cannot meet the needs of users. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. [0004] Therefore, an ob...

AI Technical Summary

Problems solved by technology

However, in recent years, as the user group becomes younger, the requirements for the shifting performance of the gearbox are getting higher and higher. Since the center distance of the gearbox cannot be made very large, the existing single-cone and double-cone synchronizers The synchronous torque is not large enough, the shift synchronization time is long, and the shift is relatively laborious, which makes the driver feel labor-intensive, so that the existing products cannot meet the needs of users

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