Gear selecting and shifting positioning mechanism for gear selecting and shifting actuator

Abstract

The invention relates to a gear selecting and shifting positioning mechanism for a gear selecting and shifting actuator. The gear selecting and shifting positioning mechanism comprises a gear selecting and shifting shaft, a gear selecting door, a limiting pin and a limiting pin mounting part. The limiting pin is arranged on the limiting pin mounting part. The gear selecting door is fixedly arranged on the gear selecting and shifting shaft, and the outer surface of the gear selecting door is provided with an open slot and a plurality of limiting grooves; and the plurality of limiting grooves are arranged at intervals in the axial direction parallel to the axis of the gear selecting and shifting shaft, and the open slot extends in the axial direction parallel to the axis of the gear selecting and shifting shaft and is vertically intersected with the plurality of limiting grooves. When the gear selecting door moves axially, the limiting pin extending into the open slot is enabled to be selectively aligned with one limiting groove; and when the gear selecting door rotates in the circumferential direction, the limiting pin extending into the open slot is enabled to enter the limiting groove aligned with the limiting pin, or the limiting pin extending into the limiting groove is enabled to enter the open slot. According to the gear selecting and shifting positioning mechanism in theinvention, the strength and rigidity of the product are increased without increasing the volume of the product, and the friction force in the gear selecting and shifting process can be reduced.

Description

technical field [0001] The invention relates to the gear shifting technology of an automobile transmission. Background technique [0002] The gear selection actuator of the automobile gearbox includes a gear selection shaft and a gear selection door. The gear selection shaft can move axially to select a gear, and can rotate to achieve a gear change. The gear selection gate is used to ensure the positioning of the gear shift. accuracy. figure 1 with figure 2 A three-dimensional structure schematic diagram and a top view schematic diagram of the existing gear selection door are respectively shown. Wherein, the gear selection door 12 includes a first gear selection door part 110 and a second gear selection door part 112, the first gear selection door part 110 is fixedly connected with the housing of the actuator, and the second gear selection door part 112 is connected to the gear selection door part 112. The gear selector shaft, the second selector gate member 112 is movab...

AI Technical Summary

Problems solved by technology

This is unacceptable for dimensionally critical gearbox designs

[0004] In addition, the thin sheet structure adopted in the above scheme has sharp edges, which is prone to scratches when selecting and shifting gears, and sliding friction is easily formed between the gear selecting door parts, and the friction resistance is large, which easily leads to gear shifting failures and shortens the life of each component. service life, and bring abnormal noise when selecting and shifting gears

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