Ceiling gun

Abstract

A ceiling gun comprises a body, a movable sleeve, an emitter tube, a guide assembly and a firing pin assembly; the movable sleeve is arranged at one side in the body in a sliding manner; the emittingtube is connected to one end, far from the body, of the movable sleeve; an inner cavity of the emitting tube is provided with a first large diameter section, a first small diameter section and a firststep portion; a gunpowder nail is arranged in the emitting tube; the guide assembly is arranged in the movable sleeve and the body in a sliding manner; the guide assembly comprises a guide pipe and aguide sleeve; one end, far from the guide sleeve, of the guide pipe is provided with a second small diameter section, a second large diameter section and a second step portion; when the guide pipe extends into the emitting tube and the gunpowder nail, the gunpowder nail is abutted against the two step portions towards the end of the body; the firing pin assembly is arranged in the guide assemblyand the body in a sliding manner and comprises a firing pin spring, a firing pin member and a firing pin rod, the firing pin rod is arranged in the guide sleeve and the body in a sliding manner, the firing pin member is arranged in the guide pipe and the guide sleeve in a sliding manner, and the firing pin spring is abutted between the body and the firing pin rod to enable the firing pin assemblyto tend to move towards the inside of the emitting tube. According to the ceiling gun, the emission pushing force of the gunpowder nail is increased.

Description

technical field [0001] The invention relates to a building fixture, in particular to a ceiling gun. Background technique [0002] At present, the ceiling gun is used to drive the gunpowder nails with gunpowder into a hard target (such as the ceiling of the room), so that the gunpowder nails can be combined with light steel frames for decorators to install ceilings, electric fans or Air-conditioning outlet, etc. [0003] The existing gunpowder nail has a nail body and a powder chamber with a larger inner diameter; [0004] The existing ceiling gun has a retractable gun body, a guide tube, and a firing pin assembly. The firing pin assembly is slidably fitted in the guide tube. The firing pin assembly includes a connected firing pin part and a firing pin rod. The guide tube It has integrally formed small-diameter section and large-diameter section. The small-diameter section has a small hole and can only pass through the firing pin. The large-diameter section has a chamber an...

AI Technical Summary

Problems solved by technology

[0006] However, the existing ceiling gun has the following defects: when the small-diameter section of the guide tube is against the end face of the powder chamber, the excess space in the powder chamber is relatively large, and it is easy to slow down the speed of the gunpowder when it explodes and burn and reduce the moment of the gunpowder nail. Power, and when the gunpowder explodes, part of the force will be released toward the direction of the guide tube, resulting in a decrease in the injection thrust of the gunpowder nail, excessive pressure on the small diameter section of the guide tube, and the small diameter section of the guide tube is prone to bending deformation or fine holes A change in bore diameter that prevents the firing pin member from extending smoothly from the diameter section or is offset when extended so that the firing pin member cannot accurately strike the powder inside the powder pin

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