Abstract: A transmission includes an input shaft, an output shaft, and a transmission device, the transmission device including a ring gear, an input member, a gear shifting slider, and an output gear.

Abstract: A gun magazine automatic changing apparatus is disclosed. According to an embodiment, a gun magazine automatic changing apparatus is combined with a gun having a barrel, a barrel cover, a receiver connected to the rear end of the barrel, and a magazine chamber. The gun magazine automatic changing apparatus includes: a multi-magazine mount including a plurality of clips each having a holder fitted on a magazine and connectors disposed on both sides of the holder and having fitting units at both ends; and a loading guide including an actuating bar pushing down the connectors of the multi-magazine mount and a holder formed at an end of the actuator bar to be held by a user and disposed under the barrel cover to move forward/backward.

Abstract: The transmission member moves in a longitudinal direction of the input member to adjust a line b connecting an input central line (A) to an output central line (B) of the output shaft and a line a connecting a rotating central line (C) of the rotation shaft to the output central line (B) of the output shaft so that the lines a and b have the same length or lengths different from each other, thereby changing the rotational force of the input member to transmit the changed rotational force to the output member or transmitting the rotational force to the output member as it is.

Abstract: A gun magazine automatic changing apparatus is disclosed. According to an embodiment, a gun magazine automatic changing apparatus is combined with a gun having a barrel, a barrel cover, a receiver connected to the rear end of the barrel, and a magazine chamber. The gun magazine automatic changing apparatus includes: a multi-magazine mount including a plurality of clips each having a holder fitted on a magazine and connectors disposed on both sides of the holder and having fitting units at both ends; and a loading guide including an actuating bar pushing down the connectors of the multi-magazine mount and a holder formed at an end of the actuator bar to be held by a user and disposed under the barrel cover to move forward/backward.

Abstract: The transmission member moves in a longitudinal direction of the input member to adjust a line b connecting an input central line (A) to an output central line (B) of the output shaft and a line a connecting a rotating central line (C) of the rotation shaft to the output central line (B) of the output shaft so that the lines a and b have the same length or lengths different from each other, thereby changing the rotational force of the input member to transmit the changed rotational force to the output member or transmitting the rotational force to the output member as it is.

Abstract: A transmission includes an input shaft, an output shaft, and a transmission device, the transmission device including a ring gear, an input member, a gear shifting slider, and an output gear.