Abstract: A bubble generating device includes a body having a front cover and a rear cover connected to the front cover. The front cover has a nozzle which has a passage defined therein. The rear cover has a space defined therein. A connection tube is connected to the rear cover and has a through hole so as to be connected with a spray gun. A bubble generating unit has a first net member and a second net member, both of which are located in the space. The space is defined into an expansion area, a pressure area and a bubble accumulating area by the first and second net members. The detergent is delivered into the expansion area and generates bubbles in the bubble accumulating area. The bubbles are accumulated into big lump of bubbles and sprayed by the air stream.

Abstract: A retractable pipe structure of an air blow gun includes an extension pipe, a lock unit and a blow pipe. The extension pipe has a through hole therein for insertion of the blow pipe. The lock unit includes a connection member. One end of the connection member is connected to the extension pipe. The other end of the connection member is connected to a lock member. An elastic collet and a seal member are provided in the lock member. The end of the connection member has an inner inclined surface which is inclined inward. Because the inner inclined surface guides the seal member and the elastic collet pushes the seal member, the seal member is deformed to tighten the blow pipe and to seal the extension pipe. The elastic collet can clamp the blow pipe and won't damage the blow pipe.

Abstract: A retractable pipe assembly of an air blow gun includes an extension pipe, a lock unit and a blow pipe. The extension pipe has a stepped through hole which has a large diameter part and a small diameter part for insertion of the blow pipe. One end of extension pipe has an inner inclined surface which is inclined inward. The lock unit includes a lock member. The lock member is connected to the extension pipe. An elastic collet and a seal member are provided in the lock member. Because the inner inclined surface of the extension pipe guides the seal member and the elastic collet pushes the seal member, the seal member is deformed to tighten the blow pipe and to seal the extension pipe. The elastic collet can clamp the blow pipe and won't damage the blow pipe.

Abstract: A retractable pipe structure of an air blow gun includes an extension pipe, a lock unit and a blow pipe. The extension pipe has a through hole therein for insertion of the blow pipe. The lock unit includes a connection member. One end of the connection member is connected to the extension pipe. The other end of the connection member is connected to a lock member. An elastic collet and a seal member are provided in the lock member. The end of the connection member has an inner inclined surface which is inclined inward. Because the inner inclined surface guides the seal member and the elastic collet pushes the seal member, the seal member is deformed to tighten the blow pipe and to seal the extension pipe. The elastic collet can clamp the blow pipe and won't damage the blow pipe.

Abstract: A retractable pipe assembly of an air blow gun includes an extension pipe, a lock unit and a blow pipe. The extension pipe has a stepped through hole which has a large diameter part and a small diameter part for insertion of the blow pipe. One end of extension pipe has an inner inclined surface which is inclined inward. The lock unit includes a lock member. The lock member is connected to the extension pipe. An elastic collet and a seal member are provided in the lock member. Because the inner inclined surface of the extension pipe guides the seal member and the elastic collet pushes the seal member, the seal member is deformed to tighten the blow pipe and to seal the extension pipe. The elastic collet can clamp the blow pipe and won't damage the blow pipe.

Abstract: A siphon nozzle for an air blow gun includes at least one first body which has a through hole, a first end and a second end which is located opposite to the first end. The first end of the at least one first body has multiple first siphon holes which communicate with the through hole. The first end is threadedly connected with a nozzle and the second end is connected with a second body having second siphon holes, or connected with more bodies having siphon holes. The siphon holes suck air into the body to increase the flow volume of air.

Abstract: A bubble generating device includes a body having a front cover and a rear cover connected to the front cover. The front cover has a nozzle which has a passage defined therein. The rear cover has a space defined therein. A connection tube is connected to the rear cover and has a through hole so as to be connected with a spray gun. A bubble generating unit has a first net member and a second net member, both of which are located in the space. The space is defined into an expansion area, a pressure area and a bubble accumulating area by the first and second net members. The detergent is delivered into the expansion area and generates bubbles in the bubble accumulating area. The bubbles are accumulated into big lump of bubbles and sprayed by the air stream.