Overrunning transmission device convenient to switch

Abstract

The invention discloses an overdrive transmission device convenient for steering switching. The transmission device comprises an output gear (1), a driving shaft (2) for providing power for the rotation of the output gear (1), and a turning gear set (5) for realizing reversing rotation of the output gear (1); a forward gear (3) sleeves one end, close to the output gear (1), of the driving shaft (2); the forward gear (3) is engaged with the output gear (1); the driving shaft (2) can be locked with the forward gear (3) so that the output gear (1) can be driven to rotate forward by use of the forward gear (3). The overdrive transmission device convenient for steering switching is capable of smoothly realizing steering switching of the output gear and effectively saving energy source.

Description

technical field [0001] The invention relates to a transmission device, in particular to an overrunning transmission device which is convenient for switching. Background technique [0002] The transmission device is an intermediate device that transmits the power of the power device to the working mechanism. Among them, taking a motor vehicle as an example, the basic function of the transmission device is to transmit the power from the engine to the driving wheels of the motor vehicle to generate driving force so that the motor vehicle can run at a certain speed. [0003] Such as figure 1 As shown, the transmission device used for steering switching in an existing motor vehicle includes an output gear 1 , a driving gear 2 and a reverse gear set 3 . Wherein, the output gear 1 is connected with a differential (not shown in the figure), and can rotate forward and reverse, so as to realize the forward and backward driving of the motor vehicle. [0004] Driving gear 2 links to ...

AI Technical Summary

Problems solved by technology

[0013] 1) In the transmission device used by the motor vehicle for steering switching, the driving gear 2 needs to be close to the output gear 1 and meshed with it during the forward and reverse switching process of the motor vehicle, or the driving gear 2 needs to be close to one end of the reverse gear set 3 And meshing with it can realize the switching of the forward and backward driving of the motor vehicle, and the misalignment between the gears often causes serious cross collision and blockage due to the large diameter difference between the two gears, resulting in The gears cannot slide into mesh normally, which will make the switching fail, and may even cause gear damage;

[0014] 2) In the transmission device of the motor vehicle used for steering switching, when the relative speed of the output gear 1 is higher than the speed of the drive shaft 4 during the running of the motor vehicle, that is, when the phenomenon of "overrunning" occurs, the output gear 1 will drive The drive shaft 4 rotates, and then it will carry the engine load to run, thus making the "overtaking" sliding distance of the motor vehicle shorter and fuel consumption increased;

[0015] 3) In the transmission device used for speed switching of motor vehicles, there are also problems similar to the above situation, that is, the interference problem when the coupling claw contacts the coupling hole, and the overtaking problem.

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