A detachable driving assembly for a toy gun, the detachable driving assembly comprising:
- a first casing (20) being cylindrical barrel and having a front end, a front opening (202), a rear end, a bottom, a bottom slit (204), a sheet (206) formed on the bottom at the rear end, and an abutting arm (208) extended from the bottom at the front end, wherein the first casing (20) comprises:
- a piston body (22) transversally received inside the first casing (20) and having a bottom and a toothed rack (222) formed on the bottom of the piston body (22);
- a spring (24) received inside the first casing (20) between the piston body (22) and the rear end of the first casing (20);
- a nozzle (26) retractably attached to piston body (22) at the front end of the first casing (20);
- and
- a driving shaft (28) movably attached under the piston body (22) and having
- a connecting end connected to the nozzle (26);
- a distal end opposite to the connecting end;
- an enlarged block (282) formed on the distal end and having an inclined face;
- and
- a resilient element extending between the driving shaft (28) and the front end of the first casing (20);
- a second casing (30) composed of two symmetrical shells and having a top, a bottom, a front end, a rear end, a top slit defined in the top and a bottom slit defined in the bottom, wherein the second casing (30) comprises:
- a gear set comprising a miter gear (322) adapted to be driven by an electrical motor;
- a reduction gear (324) rotatably connected with the miter gear (322) and composed of a large gear (3242) engaged with the miter gear (322) and a small gear (3244) coaxially mounted on the large gear (3242);
- and
- a half-toothed gear (326) rotatably connected to the reduction gear (324) and composed of a lower gear (3261) and an upper gear (3262) slightly larger than the lower gear (3261), wherein the lower gear (3261) engages with the small gear (3244) of the reduction gear (324) and the upper gear (3262) has:
- a flat face;
- an annular periphery;
- a driving block (3264) formed on the flat face to abut the inclined face of the enlarged block (282) on the driving shaft;
- multiple teeth (3266) partially formed on a first portion of the annular periphery to engage with the toothed rack (222) under the piston body (22);
- and
- an idle area formed on a second portion of the annular periphery;
- a trigger (34) pivotally attached inside the second casing (30);
- a switch (36) accommodated at the front end inside the second casing (30) and activated by the trigger (34);
- and
- a levering block (38) pivotally attached at the front end of the second casing (30) and having
- a pivotal axle attached to the second casing (30);
- a driven end (382);
- and
- a resting end (384) perpendicular to the driven end (382);
- wherein, the first casing (20) is pivotally mounted on the second casing (30) at the rear end of the first casing (20) by inserting the sheet (206) into the second casing (30) via the top slit and pivotally attaching the sheet (206) to the second casing (30);
- and
- wherein, the casing (20) is detachably mounted on the second casing (30) at the front end of the first casing (20) by clipping the levering block (38) with the abutting arm (208).