Operating mechanism for manual transmission of automobile

Abstract

The invention discloses an operating mechanism for a manual transmission of an automobile. The mechanism comprises a gear-shifting shaft, a gear-selecting interlocking block, an elastic pin, a gear-shifting shifting block, a gear-shifting interlocking plate, a shell, a gear-selecting positioning seat and a gear-shifting positioning seat, wherein the gear-selecting interlocking block and the gear-shifting shifting block are fixedly connected with the gear-shifting shaft through the elastic pin respectively and are positioned on the outer side of the shell respectively; relative motion does not exist among the gear-selecting interlocking block, the gear-shifting shifting block and the gear-shifting shaft; and the gear-selecting positioning seat and the gear-shifting positioning seat are fixedly connected with the shell of the transmission respectively. A gear-selecting force-sensing block, an interlocking shifting block and a limit mechanism are integrated on the same part through a centralized design, so that the mechanism has a compact structure, a reasonable design, good gear-selecting handfeel and high comfort, is easy to assemble, reduces the processing cost of parts, saves raw materials, and realizes the functions of neutral gear positioning, gear-selecting return, gear-selecting force generation, gear-shifting force generation (for enhancing gear-shifting suction feeling) and the like. The invention is suitable to be used as an operating mechanism for the manual transmissions of various vehicles.

Description

technical field [0001] The invention relates to a vehicle shifting device, in particular to an operating mechanism of an automobile manual transmission. Background technique [0002] At present, in the selection and shifting mechanism of the automobile manual transmission, in order to make the gear selection can return to the neutral position correctly and ensure the accuracy of the neutral position, a neutral positioning device must be used. In addition, in order to improve the hand feeling during the shifting operation and the comfort of shifting, during the shifting operation, moderate and comfortable shifting force is required. If the shifting force is too large, frequent The shifting operation will make the driver tired, the selection and shifting force is too small, there is no hand feeling during the shifting operation, the selection and shifting return performance is poor (returning performance refers to the ability to automatically return to the empty gear after the...

AI Technical Summary

Problems solved by technology

[0004] In the actual assembly, there are two problems as follows: First, there are many parts to be assembled, and the installation is inconvenient. A snap ring groove needs to be designed on the shift shaft, which increases the processing cost of the shift shaft and reduces the rigidity of the shift shaft. The second is that due to the structural limitation of the coil spring form, in order to ensure the accuracy of the neutral gear, the gear selection force at one end must be greater than the other end, resulting in inconsistent gear selection forces for the 1 / 2 gear and the 5 / R gear on the shift handle. Poor feeling of power during operation, poor gear selection comfort

[0006] (1) There are many parts to be assembled, and the installation is inconvenient. A snap ring groove needs to be designed on the shift shaft, which increases the processing cost of the shift shaft and reduces the stiffness of the shift shaft. In order to ensure the strength, the shift shaft needs to be thickened. Material consumption is high;

[0007] (2) Due to the limitation of the design of the coil spring structure, in order to ensure the accuracy of the neutral gear, the gear selection force at one end must be greater than the other end, resulting in inconsistent gear selection forces for 1 / 2 gear and 5 / R gear on the shift handle. Poor hand feeling during operation and poor gear selection comfort

[0008] (3) Most of the gear selection and shifting mechanisms use the shell snap ring limit method to control the gear selection stroke. Due to the difficulty in controlling the manufacturing tolerance of the spring, spring seat and snap ring structure, and poor manufacturing consistency, the gear selection stroke and gear selection The power is not easy to control, and it is prone to poor comfort in gear selection and jamming during gear shifting

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