2.3反向離合器

4-Roller clutch

The blue roller is driving The orange one is driven.

The two small rollers are idle.

Using the pink arm to stop or reverse the orange roller’s rotation.

The mechanism’s weakness is needed measures to create pressure at

the contact places of the blue, green and yellow rollers (not shown).

4-Gear clutch

The blue gear is driving. The orange one is driven.

The two small gears are idle.

Using the pink arm to stop or reverse the orange gear’s rotation.

Measure for fixing the pink arm at its three working positions is not

shown.

The mechanism’s weakness is the possible collision of the orange gear

and the two small gears.

Gear and Roller clutch

The blue gear is driving. The orange roller is driven.

The two gear and roller combinations are idle.

Using the pink arm to stop or reverse the orange gear’s rotation.

The mechanism does not have the weaknesses shown in 4-roller clutch

or in 4-gear clutch:

Reverse mechanism 1

Violet lever has 3 positions: forward, neutral and backward.

Ball spring device for the lever positioning is not shown.

Green and blue gears are in permanent mesh. When left pink gear

is in mesh with the blue gear, grey slider goes forward. When right

pink gear is in mesh with the green gear, grey slider goes

backward.

The lever neutral position is for stopping the grey slider or setting

its position (by hand turning orange screw).

The mechanism is suitable for slow speed.

In case of fast speed to stop the input before reversing.

Bevel gear clutch for changing rotation direction 1

Bevel gear clutch for changing rotation direction 2

The pink gear is driving. The orange output shaft of a bevel

gear oscillates. The two blue gears rotate freely on the

orange shaft. The white clutch part is slidingly splined on

the orange shaft.

The clutch connecting force is due to the weight on the

green lever. The bevel drive on the right is for controlling

the clutch. The oscillation forward and backward angles

depend on transmission ratio of the said drive.

Instead of the weight action, the spring toggle mechanism can be used.

Chain drive 1E

A chain drive that can itself reverse motion direction of the chain.

On the sketch: the orange sprocket is driving, the two large chain

wheels are driven.

The animation shows the driving sprocket and chain behavior at

reverse time: from the left-to-right motion of the chain to the right-toleft

motion. For the reverse from the right-to-left motion of the chain

to the left-to-right motion, the process is similar, the chain moves

from the lower side of the orange sprocket to the the upper side.

The yellow leading plate and the pink link are key parts.

Time between two consecutive reverses depends on the chain

length.