Abstract:
A portable direct-circuit sprayer includes a body, a platform, a pump and a control panel. The body includes a water chamber therein, a component chamber therein and two longitudinal shoulders on the interior of the component chamber. The platform is supported on the longitudinal shoulders in a cushioning manner. The pump is installed on the platform. The control panel is installed on the body in order to enclose the platform in the component chamber.

Description:
BACKGROUND OF INVENTION 
   1. Field of Invention 
   The present invention relates to a sprayer and, more particularly, to a portable direct-current sprayer. 
   2. Related Prior Art 
   In U.S. Pat. No. 6,158,669, there is disclosed a portable misting device 100 including a housing 102 and a compartment 119 put in the housing 102. The compartment 119 is shut by a sidewall 137. A bracket 123 is secured to the sidewall 137 by screws. A battery 128 is put on the bracket 123. A filter 110 and a pump 114 are attached to a side of the bracket 123 while an accumulator 116 is attached to an opposite side of the bracket 123. A hose 108 is inserted through an orifice 141 defined in the sidewall 137. A switch 131 is put in an orifice 143 defined in the sidewall 137. A switch 170 is put in an orifice 145 defined in the sidewall 137. The misting device 100 can be used in various occasions. 
   Several problems have been encountered in the use of the portable misting device 100. For maintenance or repair, the sidewall 137 must be moved from the housing 102. However, carrying the filter 110, the pump 114 and the accumulator 116, the sidewall 137 is heavy, and it is hard to handle the sidewall 137. Moreover, the pump 114 vibrates in operation. The vibration causes the sidewall 137 and the housing 102 to rub against each other. After some time of use, the sidewall 137 cannot be attached to the housing 102 firmly. The lifecycle of the portable misting devices 100 is short. 
   The present invention is therefore intended to obviate or at least alleviate the problems encountered in the prior art. 
   SUMMARY OF INVENTION 
   According to the present invention, a portable direct-circuit sprayer includes a body, a platform, a pump and a control panel. The body includes a water chamber therein, a component chamber therein and two longitudinal shoulders on the interior of the component chamber. The platform is supported on the longitudinal shoulders in a cushioning manner. The pump is installed on the platform. The control panel is installed on the body in order to enclose the platform in the component chamber. 
   An advantage of the sprayer according to the present invention is its low cost. This is because it is made with a simple structure consisting of only a few elements involving easy fabrication. 
   Another advantage of the sprayer according to the present invention is its easy maintenance and repair. This is because the movement of the control panel from the body is easy since the control panel is not connected to the pump or any other heavy components. 
   Still another advantage of the sprayer according to the present invention is its long lifecycle. This is because it is not vulnerable to vibration that the pump entails in operation, since the body holds the platform firmly and absorbs the vibration. 
   Firstly, it is made with a simple structure consisting of only a few elements involving easy fabrication and, hence, a low cost. 
   Secondly, its maintenance and repair are easy because the movement of the control panel  30  from the body  10  is easy since the control panel  30  is not connected to the pump  20  or any other heavy components. 
   Thirdly, its lifecycle is long with the portable direct-current sprayer not being vulnerable to vibration as the body  10  holds the platform  25  firmly and absorbs the vibration that the pump  20  entails in operation. 
   Other objectives, advantages and novel features of the present invention will become more apparent from the following detailed description referring to the attached drawings. 

   
     BRIEF DESCRIPTION OF DRAWINGS 
     The present invention will be described via detailed illustration of the preferred embodiment referring to the drawings. 
       FIG. 1  is a perspective view of a portable direct-current sprayer according to the preferred embodiment of the present invention. 
       FIG. 2  is an exploded view of the sprayer shown in  FIG. 1 . 
       FIG. 3  is a cross-sectional view taken along a line  3 - 3  in  FIG. 1 . 
       FIG. 4  is a cross-sectional view taken along a line  4 - 4  in  FIG. 3 . 
       FIG. 5  is a cross-sectional view taken along a line  5 - 5  in  FIG. 3 . 
       FIG. 6  is similar to  FIG. 3  but shows a nozzle connected, through a hose, to a body of the sprayer. 
       FIG. 7  is a side view of a user washing a jeep by the sprayer shown in  FIG. 1  electrically connected to a sedan 
   

   DETAILED DESCRIPTION OF INVENTION 
   Referring to  FIGS. 1 through 3 , there is shown a portable direct-current sprayer in accordance with the preferred embodiment of the present invention. The sprayer includes a body  10 , a pump  20  and a control panel  30 . 
   The body  10  includes a handle  11  formed thereon so that a user can carry the body  10  by the handle  11 . The body  10  defines a water chamber  12 . The water camber  12  includes an opening  14 . Water can be poured into the water chamber  12  through the opening  14 . The opening  14  can be shut by a cover  15  so that the water can be restored in the water chamber  12 . The body  10  defines a component chamber  13 . The component chamber  13  is separated from the water chamber  12  except that an upstream pipe  16  is directed to the component chamber  13  from the water chamber  12 . The water can be transmitted to the component chamber  13  from the water chamber  12  through the upstream pipe  16 . A transverse shoulder  133  and two longitudinal shoulders  131  are formed on the interior of the component chamber  13 . The shoulders  131  and  133  are integrated. A ridge  134  is also formed on the interior of the component chamber  13  above the transverse shoulder  133 . In the front surface of the body  10  are defined two recesses  132 , with each recess  132  being near one of the longitudinal shoulders  131 . 
   The pump  20  includes an inlet  21  and an outlet  24 . The inlet  21  is connected to the upstream pipe  16 . The outlet  24  is connected to a downstream pipe  22  directed to the control panel  30 . The pump  20  is powered by direct current, not alternate current. 
   The pump  20  is attached to a platform  25 . The platform  25  includes a rear edge  252 , a front edge  254 , two longitudinal edges  251  and two tabs  253  each extended from one of the longitudinal edges  251  near the front edge  254 . The platform  20  is put in the component chamber  13 . The rear edge  252  is put between and clipped by the transverse shoulder  133  and the ridge  134 . The longitudinal edges  251  are put on the longitudinal shoulders  131 . The tabs  253  are put in the recesses  132 . 
   On the control panel  30  is installed a socket  301 . In the component chamber  13 , a relay  33  is provided between the socket  301  and the pump  20 . Outside the component chamber  13 , the socket  301  can receive a first end of a connector  31 . The joint  302  includes an end connected to the downstream pipe  22  and an opposite end for connection to a hose  26  directed to a nozzle  23 . The control panel  30  is attached to the front surface of the body  10  by screws  34 . The pump  20  is kept in the component chamber  13 . 
   Referring to  FIGS. 3 through 5 , the platform  20  is kept in the component chamber  13  by the control panel  30 . The rear edge  252  is clipped by the transverse shoulder  133  and the ridge  134 . The longitudinal edges  251  are put on the longitudinal shoulders  131 . The tabs  253  are put in the recesses  132 . Thus, the body  10  can absorb vibration that the pump  20  entails in operation. The lifecycle of the sprayer is long. 
   Referring to  FIGS. 6 and 7 , on the control panel  30  is installed a switch  32 . In the component chamber  13 , the switch  32  is electrically connected to the socket  301 . A second end of the connector  31  is inserted in a socket (not shown) designed for receiving a cigarette lighter in a vehicle. Then, the user can operate the switch  32  in order to turn on the sprayer. Hence, the user can spray the water from the nozzle  23 . 
   As shown, the user inserts the second end of the connector  31  in a socket designed for receiving a cigarette lighter in a sedan  90  and washes a jeep  91  with the water from the nozzle  23 . 
   Although not shown, the user can wash the sedan  90  with the water from the nozzle  23 . 
   Although not shown, the user can insert the second end of the connector  31  in a socket designed for receiving a cigarette lighter in the jeep  91 , and wash the sedan  90  with the water from the nozzle  23 . 
   The sprayer of the present invention exhibits several advantages. 
   Firstly, its cost is low. This is because of its simple structure consisting of only a few elements that involve easy fabrication. 
   Secondly, its maintenance and repair are easy, because the movement of the control panel  30  from the body  10  is easy since the control panel  30  is not connected to the pump  20  or any other heavy components. 
   Thirdly, its lifecycle is long with the sprayer not being vulnerable to the vibration since the body  10  holds the platform  25  firmly and absorbs the vibration. 
   The present invention has been described through the illustration of the preferred embodiment. Those skilled in the art can derive variations from the preferred embodiment without departing from the scope of the present invention. Therefore, the preferred embodiment shall not limit the scope of the present invention defined in the claims.