Switch Device For Nail Gun

A switch device for a nail gun, comprising:

• a body (1) having a main chamber (10), a cylinder (30) received in the main chamber (10), a main path (11) communicating with the cylinder (30), a recess (12) formed in the body (1) and located beside the main path (11), a valve (5) received in the recess (12), an end member (20) connected to a rear end of the body (1), an air way (120) communicating between the recess (12) and the end member (20), a first release path (C) communicating the recess (12) and outside of the body (1), a communication path (B) communicating between the main chamber (10) and the recess (12);
• the end member (20) having a receiving area (200) in which a movable member (25) is accommodated, a bore (201) defined through a rear end of the end member (20), an air path (A) formed between the recess (12) and the receiving area (200);
• the movable member (25) having a first groove (251) defined in an outside thereof, a seal (9) engaged with the first groove (251), a passage (252) defined axially through the movable member (25), a spring (26) biased between the movable member (25) and an inside of the end member (20);
• a piston including a piston head (351) and a strike member (352) extending from the piston head (351), the piston head (352) movably located in the cylinder (30) and the strike member (352) extending through the cylinder (30), the piston head (351) including a second groove (353) in which another seal (9) is engaged;
• the valve (5) including a ring (53), an inside part (50) and an outside part (56) respectively located in the recess (12), a first movable part (51) movably located between the ring (53) and a room (501) in the inside part (50), a second movable member (54) having a first end thereof located in a first axial hole (511) of the first movable part (51), a second end of the second movable member (54) movably located between the ring (53) and the outside member (56), an axle (55) having a first end thereof located in a second axial hole (541) of the second movable member (54), a second end of the axle (55) movably protruding beyond a central hole (561) of the outside member (56), wherein
• the inside part (50) has a third groove (500) defined in an outside thereof, another seal (9) is engaged with the third groove (500), a room (501) is defied in the inside part (50) and the first movable part (51) is movably located in the room (501), a first radial hole (503) and a second radial hole (504) are respectively defined radially through a wall of the inside part (50), the first radial hole (503) communicating with the air way (120), the second radial hole (504) communicating with the first release path (C), the first movable part (51) includes a first outer groove (510) and another seal (9) is engaged with the first outer groove (510), the ring (53) includes through hole (531), an inner groove (532) is defined in an inner periphery of the through hole (531), another seal (9) is engaged with the inner groove (532), the ring (53) includes a second outer groove (533) defined in an outside thereof, another seal (9) is engaged with the second outer groove (533), the second movable part (54) includes a third outer groove (540) defined in an outside thereof, another seal (9) is engaged with the third outer groove (540), a third radial hole (543) and a fourth hole (544) are respectively defined radially through a wall of the second movable part (54), air enters into and leaves from a first space (D) that is formed between the first movable part (51) and the ring (53) via the third radial hole (543), air enters into and leaves from a second space (E) that is formed between the second movable part (54) and the ring (53) via the fourth radial hole (544), the axle (55) has a fourth groove (550) defined in an outside thereof and another seal (9) is engaged with the fourth groove (550), a contact portion (551) extends from the second end of the axle (55) that movably protrudes beyond the central hole (561) of the outside member (56), the outside member (56) includes an engaging groove (560) defined in an outside thereof and another seal is engaged with the engaging groove (560), a reception area (562) is defined in the outside member (56) and the second movable part (54) is partially located in the reception area (562), a fifth radial hole (563) is defined radially through a wall of the outside member (56) and communicates with the reception area (562), the fifth radial hole (563) communicates with the communication path (B), a switch member (6) includes a first annular groove (60) and a second annular groove (61) defined in an outside thereof, another seal (9) is engaged with the first annular groove (60), a clip (90) is engaged with the second annular groove (61), the valve (5) controls the movable member (25) to move to switch the nail gun between features of single mode and automatic mode.