Abstract: A piston structure of a toy gun is disclosed. An air induction passage and at least an air inlet are formed on the piston. In addition, a control device is applied to the piston for correspondingly opening or closing the air inlet according to the movement of the piston. As a result, much more air can be sucked into an air storage chamber immediately after the backward movement of the piston. Therefore, the air capacity of the air storage chamber of the cylinder tube can be increased so as to produce larger air pressure for pushing the bullet to the outside of the toy gun, thereby simulating the recoil effect of the real shooting and improving the shooting performance of the toy gun.

Abstract: A cylinder tube of a toy gun is disclosed. A cylinder head is mounted on the cylinder tube of the toy gun. A tube passage is formed to penetrate through the cylinder head. Several air induction passages are formed circularly around the tube passage. A control device is applied to the air induction passages for opening or closing the air induction passages according to the forward or backward movement of the piston. As a result, much more air can be sucked into the air storage chamber immediately after the backward movement of the piston. Accordingly, the air capacity of the cylinder tube can be increased so as to produce larger air pressure for pushing the bullet to the outside of the toy gun, thereby improving the shooting performance of the toy gun and providing the simulated recoil effect, which simulates the real shooting.

Abstract: In a toy gun with a bullet-loading structure, a cylinder, a piston, a final gear, and a pull rod are mounted in a gun body. The piston and the pull rod are driven by the rotation of the final gear. An actuation time of the pull rod is later than that of the piston to enable the piston to suck a lot amount of gas before the loading of the bullet, thereby preventing a gun tunnel from being blocked by the raised bullet and providing the simulated recoil effect of real shooting so as to promote the shooting performance of the toy gun.

Abstract: A heat-dissipating structure inside a computer mainframe comprising an air-guiding mask installed either to the side board of a mainframe case or above the heat dissipation module of CPU; when mainframe case is used together with different mother boards, the CPU location within the mother board is expected to change accordingly, but the air-guiding mask can be correlated effectively to the heat-dissipating holes on the mainframe case, cold air can be introduced into the mainframe to dissipate heat, hot air within the mainframe case can be prevented from back flowing into the heat-dissipating module installed above CPU, CPU temperature can therefore be lowered; meanwhile, when air-guiding mask is installed in the mainframe case, a baffle can be installed at the gap between the air-guiding mask and heat-dissipating module such that hot air back flow can be greatly reduced and cold air from exterior can cool CPU directly.

Abstract: A heat-dissipating structure inside a computer mainframe comprising an air-guiding mask installed either to the side board of a mainframe case or above the heat dissipation module of CPU; when mainframe case is used together with different mother boards, the CPU location within the mother board is expected to change accordingly, but the air-guiding mask can be correlated effectively to the heat-dissipating holes on the mainframe case, cold air can be introduced into the mainframe to dissipate heat, hot air within the mainframe case can be prevented from back flowing into the heat-dissipating module installed above CPU, CPU temperature can therefore be lowered; meanwhile, when air-guiding mask is installed in the mainframe case, a baffle can be installed at the gap between the air-guiding mask and heat-dissipating module such that hot air back flow can be greatly reduced and cold air from exterior can cool CPU directly.