Air-pressure sprayer structure

#The present invention is related to an improved air-pressure sprayer structure, comprising a container, a cover unit, an air-pump unit, a spray mouthpiece unit, and a water-stop valve wherein said cover unit, engaged with said water-stop valve at one side and said air-pump unit at the other side, is screw jointed to said container and attached to said spray mouthpiece unit for use. Said air-pump unit is provided with an air-relief valve through which extra air can be released when said container is saturated with air, preventing the danger of explosion due to over air pressure to achieve the purpose of safety.

#Please refer to FIG. 1. A conventional air-pressure sprayer is made up of a container 10, a cover body 11, a water-outlet pipe 12, a press body 13, a water-stop valve 14, a locating means 15, a valve rod 16, a sleeve tube 17, and a spray nozzle 18. The container 10 is provided with outer threads 101 and a water opening 102 disposed at the upper section thereof A projected pivot slot 111 and a receiving groove 112 defined by said projected pivot slot 111 are disposed at the top face of the cover body 11. The receiving groove 112 is equipped with an indented locating slot 1121 at one side and a handle 113 at the other side. The cover body 11 is provided with a screw body 114 disposed at the opposite side of the handle 113 thereof to be engaged with the spray nozzle 18 having spray port 181 disposed at the center thereof via internal threads 182 disposed at one end thereof. A water-discharge hole 115 is disposed at the center of the screw body 114 at one end, connecting with a through hole 1151 at other end thereof via the water-outlet pipe 12 led through the passage there-between. The underside of the cover body 11 is provided with a screw fixing hole 116, extending downwards under the projected pivot slot 111, and internal threads with an anti-leak ring 118 disposed at the interior side thereof. The press body 13 comprises a locating slot 131 with an abutting part 132 having a blocking flange 132 disposed at the front thereof, and a locating hole 134 with a pair of locating posts 133 extending downwards at the front surface thereof.

#The water-stop valve 14 has a water-stop part 141 disposed at one end, a water-outlet part 143 having an anti-leak washer 144 and a spring 142 sleeve jointed at the middle section thereof, and a fixing part 146 with a block body 145 disposed thereon at the other end thereof. The locating means 15 has a locating recess 151 disposed at one side with an abutting plate 152 disposed at the top thereof. The valve rod 16 comprises a knob 161 with a stop ring 162 disposed at the upper section, a rod body 163 disposed at the lower section with a valve body 165 having an anti-leak ring 164 disposed thereon being screwed to the bottom of the rod body 163. The sleeve tube 17 is provided with an anti-leak ring 172 and a projecting flange 173 with external threads section 171 disposed at the upper end thereof, and a through hole 175 circled by a multiple of air ports 174 at the bottom center thereof. A guard valve 176 having a fixing post 177 disposed thereon is attached to the bottom of the sleeve tube. 17 via the fixing post 177 thereof being inserted into said through hole 175 thereof.

#FIG. 1 is a perspective exploded view of a conventional air-pressure sprayer.

#FIG. 2 is a sectional view of a conventional air-pressure sprayer in operation.

#FIG. 3 is a partially sectional view showing the press-and-pull movement of a conventional air-pressure sprayer in operation.

#Please refer to FIG. 4. The present invention is related to an improved air-pressure sprayer structure, comprising a container 20, a cover unit 30, an air-pump unit 40, a sprayer mouthpiece unit 50, and a water-stop valve 60. The container 20 is provided with a water-intake opening 22 and external threads 21 disposed at the upper section.

#The cover unit 30 comprises an engaging body 31, a cover body 32, a spring 33, and a press body 34. The engaging body 31 is provided with a mounting means 311 projecting at one side thereof with a fixing hole 3111 disposed at the front of said mounting means 311 thereon, and a bearing seat 312 disposed at the other side with a pivot hole 313 disposed in the center thereof. A screw hole 314 is projected downwards inside said bearing seat 312 thereof. The cover body 32 is provided with an indented groove 321 at the top face thereof to hold said press body 34 thereof, an abutting means 322 projected at one side thereof, a handle bent downwards at the other side thereof, and a through hole 3212 circled by a fixing flanged ring 3211 disposed at the central top face thereof A first spring seat 3213 is disposed at one side of said fixing flanged ring 3211 thereof to receive said spring 33, and a projected hollow tube 3214 is disposed at the other side thereof, extending downwards to communicate with a sleeve pipe 3215 with a stop flange 3216 projected there-between said hollow tube 3214 and said sleeve pipe 3215 thereof.

#The abutting means 322 thereof is provided with a pair of corresponding through holes 321 disposed at both lateral sides thereof, and a fixing block 324 projected at the front top thereof. A first fixing plate 325 having a first through hole 3251 disposed thereon is vertically disposed under said fixing block 324 at the front of said abutting means 322 thereof. A coupling means 326 having a pair of corresponding fixing keys 3261 disposed at both lateral sides and a water-outlet hole 3262 disposed at the center thereof is projected at the front of said abutting means 322. An internal screw hole 327 having an anti-leak washer 3271 and a projected ring seat 328 disposed thereon is projected downwards at the underside of said cover body 32 thereof. The press body 34 comprises a slot 341 of proper size disposed at the middle section thereof, an engaging recess 342 disposed at one side of said slot 341 thereof, and a press section 344 disposed at the other side thereof wherein a pair of corresponding locating plates 343, each having a locating block 3431 disposed thereon, are extended in parallel at both sides of said engaging recess 342, and a slide block 345 having a pair of locating posts 3451 disposed at one end thereof is provided at said press section 344 to be moved back and forth for location. The underside of said press body 34 is disposed a second spring seat 346 corresponding to the first spring seat 3213 thereof.