TWM487812U - Switching valve assembly structure for nail gun - Google Patents

Claims (7)

The utility model relates to a switch valve group structure for a nail gun, which comprises a body, which is respectively formed with a main air passage, a first accommodating chamber, an upper air passage and a second accommodating chamber, and the first accommodating chamber is provided with a through hole and a side passage The holes are respectively connected with the main air passage and the second accommodating chamber, and the wall of the first accommodating chamber between the top through hole and the side through hole is in communication with the inlet end of the upper air passage, and is in the first capacity The main switch group is provided in the indoor group; the main feature is that the main switch group is composed of a seat body, a fixed seat, a movable seat, an elastic member and a shaft, wherein the seat body is set in the first accommodation. a leakage sealing oil seal is arranged on the contact surface between the seat body and the first accommodating chamber, and an inner concave portion is respectively disposed on the seat body, a through hole venting the inner concave portion to the outer side of the seat body, and Connecting the inner concave portion to the outer side of the seat body, so that the fixing seat, the movable seat, the elastic member and the shaft can be located between the seat body and the first accommodating chamber; and between the top surface of the seat body and the bottom surface of the fixed seat Forming a guide groove, the guide groove is in communication with the lower air hole of the fixed seat; the fixed seat is respectively formed with a bottom surface facing upward a recessed cavity, a side upper air vent between the communication abutment to the main airway, a side air vent hole connecting the abutment to the upper half of the first accommodating chamber, and a communication abutment to the lower half of the first accommodating chamber a side lower air hole of the space, and a top-loading air hole between the auxiliary air chamber and the main air passage, wherein the concave chamber is for moving the movable seat to move back and forth, and the top air hole is provided with the first oil seal; a movable seat, which is moved back and forth between the recess of the fixed seat and the inner recess of the seat body, wherein the movable seat comprises a recessed area with a bottom surface facing upward, and a top hole for the shaft to move back and forth to the recessed area And a ring groove located between the upper oil seal and the middle oil seal, wherein the recessed portion is provided with an elastic member, and the two ends of the elastic member can be abutted against the shaft to the top wall surface of the recessed portion; the shaft includes a diameter smaller than a guide portion of the air hole diameter on the top of the fixed seat, a self-guide portion a lower extension and a body slightly larger than the diameter of the guide portion, a convex portion extending downward from the body portion and having a diameter slightly larger than the body portion, and two second oil seals and a third portion disposed at the upper and lower ends of the convex ring portion The oil seal, wherein one end of the shaft passes through the top hole of the movable seat and the top air hole of the fixed seat to move back and forth, and the other end of the shaft can pass through the through-shaft hole of the inner concave portion of the seat body and protrudes adjacent to each other. Located in the vicinity of the trigger; with the above structure, the movement of the movable seat can drive whether the upper oil seal and the middle oil seal cross the upper air hole and the lower air hole of the fixed seat, and the movement of the shaft to drive the body to be tightly inserted. Blocking at the first oil seal to determine whether the pressurized gas of the main airway continues to enter the upper air passage from the upper air vent, the annular groove, the side air vent, and the upper half of the first accommodating chamber as a source of supply gas, In order to solve the problem of accidental risk of immediate impact damage caused by the remaining nails when the trigger and the bumper are first pressed and then connected to the air pressure source, the safety of the operation is improved. The switch valve block structure for a nail gun according to the first aspect of the invention, wherein the one end of the base body is provided with a threaded portion that can be screwed to one end of the first accommodation chamber by the threaded portion. According to the invention, the switch valve group structure of the nail gun according to the first aspect of the patent application, wherein the inner wall surface of the fixed seat and the outer wall surface of the movable seat are respectively disposed with an upper oil seal and a middle oil seal, and the upper and middle oil seals are blocked. The effect is to divide the alcove into independent spaces of at least two or three segments. According to the invention, the switch valve group structure of the nail gun according to the first aspect of the patent application, wherein the outer wall surface of the fixing seat is respectively provided with an upper leakage preventing member, a middle leakage preventing member and a lower leakage preventing member, and the upper leakage preventing member and the middle leakage preventing member are respectively arranged. The bottom leakage preventing member is disposed between the outer wall surface of the lower portion of the fixing seat and the inner concave portion of the seat body, so as to be the first receiving portion. The chamber is divided into two separate spaces by the upper leakage stop and the leakage stop, and the lower leakage member has another independent space. According to the fourth aspect of the invention, the switch valve assembly for a nail gun is characterized in that the upper stop member is disposed in the top through hole, and the stop leak member is disposed between the upper air passage inlet end and the side through hole inlet end. . According to the fourth aspect of the invention, in the nail gun switch valve group construction, wherein the upper leakage preventing member is disposed between the top through hole and the upper air passage inlet end, and the intermediate leakage member is disposed at the upper air passage inlet end to the side. Between the inlet ends of the through holes. According to the fifth aspect or the sixth aspect of the invention, the switch valve group structure of the nail gun, wherein the upper half of the independent space of the first accommodation chamber serves as a communication basis between the upper air passage and the air hole in the side, and the first capacity The lower half of the independent space of the chamber serves as the basis for the connection between the inlet end of the side through hole, the guide groove and the lower side air hole.