Abstract:
A main switch with extended multiple individual conducting plates is provided, each switch comprises three conducting plates. A first conducting plate has a first fin extending into the main switch. A second conducting plate also comprises a second fin which extends into the main switch. The first and the second fins are positive terminals and are controlled by the corresponding switch to turn on and off. A third conducting plate has a third fin which is a negative terminal. Both the second and the third conducting plates comprise at least one clip extending outwardly to form conductors of a receptacle.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     This invention relates to a main switch with extended multiple individual conducting plates, more particularly to a switch having extending conducting with multiple clips. 
     2. Prior Art 
     A conventional extension receptacle has a number of receptacle modules. Each receptacle module is controlled by an individual switch to connect or to cut the power supply. As shown in FIG. 13, an electrical extension receptacle comprises an extension cored receptacle A having a number of receptacle modules A 1 . Each of the receptacle modules A 1  is accompanied by a switch A 2  (various types of switches are used, i.e. switches include an indicator, or an overload protector) to control the electric power supplied to the receptacle module A 1 . As shown in FIG. 14, a positive terminal A 21  of the switches A 2  are respectively connected to each other by a copper wire A 6 , and then connected to one end A 31  of an overload protector A 3 . Whereas the other end A 32  of the overload protector A 3  is connected to a positive end of the incoming power supply. The other end A 22  of the switches A 2  are respectively bridged to the positive end A 11  of the corresponding receptacle modules A 1  by respective copper wires A 5 . A negative end A 23  of the switches A 2  are respectively bridged to a negative end A 12  of the corresponding receptacle modules A 1  by respective copper wires A 41 . Whereas the negative end A 23  of the first switch A 2  is connected to each negative end A 12  of the receptacle modules A 1  by a long copper wire A 4 , which connects to the incoming negative end of the power supply. The above mentioned receptacle modules A 1  of the extension cord receptacle A use the corresponding switches A 2  to individually control power being supplied. In order to have a good connection at each connecting unit between the switches A 2  and the receptacle modules A 1 , welding is used. 
     However, that assembly has some shortcomings, such as: 
     1. the process of welding may cause bad connections, 
     2. the assembly procedure is complicated, and 
     3. the labor cost is high. 
     SUMMARY OF THE INVENTION 
     It is the primary object of the present invention to provide a main switch with extending conducting plats to form direct contact points to simplify welding procedures. 
     It is another object of the present invention to provide a main switch with extending multiple individual conducting plates which is capable of being expanded to have more receptacle connections. 
     It is a further object of the present invention to provide a main switch with extending multiple conducting plates which is convenient in use and inexpensive to manufacture. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is an exploded view of the present invention; 
     FIG. 2 is a perspective view of the present invention; 
     FIG. 3 is a top view of FIG. 2, partially sections; 
     FIG. 4 is a side view of FIG. 2, partially sections; 
     FIG. 5 is a perspective view of a first embodiment of the present invention; 
     FIG. 6 is an exploded view of a second embodiment of the present invention; 
     FIG. 7 is a top view of the second embodiment of the present invention; 
     FIG. 8 is an exploded view of a third embodiment of the present invention; 
     FIG. 9 is a perspective view of FIG. 8; 
     FIG. 10 is a top view of FIG. 8; 
     FIG. 11 is an exploded view of a fourth embodiment of the present invention; 
     FIG. 12 is a top view of FIG. 11; 
     FIG. 13 is a perspective view of a prior art device; and 
     FIG. 14 is a bottom view of FIG.  13 . 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     A main switch with extending multiple conducting plats comprises a main switch  1 , a switch device  2 , and conducting plates  3 ,  4  and  5 . 
     The main switch  1  is formed by a switch box  11  and a seat  12 , that may be formed as a single side of the switch box  11 . The switch box  11  receives the switch device  2 , which may be a toggle or push type, and comprises an internal indicator. The switch device  2  has a post  21  with a spring  211  at the bottom portion thereof, one end of the post  21  being connected to the indicator and the other end extending to switch a plate  22  in the main switch  1 . 
     The main switch  1  has a first conducting plate  3 , a second conducting plate  4 , and a third conducting plate  5 . The third conducting plate  5  is a negative conductor having a third fin  51  at one side to receive a spring  23  on one end thereof. The other end of the spring  23  is connected to the indicator of the switch device  2  and thus closes the circuit for the indicator. In the event that no indicator is provided, the third fin  51  and the spring  23  may be eliminated. The first conducting plate  3  is a positive conductor which connects the incoming power supply to form a closed circuit. The first conducting plate  3  has a preset first fin  31  which is located in the switch box  11 . The second conducting plate  4  is another positive conductor having a positive outlet extending into the switch box  11  that forms a second fin  41  in the switch box  11 . The second fin  41  has a notch  411  on the top edge portion to receive the plate  22  of the switch device  2  therein. The plate  22  is controlled by the post  21  to engage or disengage with the first fin  31  of the first conducting plate that controls the connection between the first conducting plate  3  (the input positive conductor) and the second conducting plate  4  (the output positive conductor). Both of the second conducting plate  4  and the third conducting plate  5  respectively have a second clip  42  and a third clip  52  extending therefrom. The second clip  42  is the positive end and the third clip  52  is the negative end. The second and the third clips  42  and  52  are each formed in a U-shaped contour in correspondence to the contour of a plug foot. Various shapes may be used for the slips  42  and  52 , so long as they are able to hold a plug firmly therein. 
     FIG. 2 is a perspective view of FIG. 1 of the invention, the positive conductor and the grounded conductor (referring to the second conducting plate  4  and the third conducting plate  5 ) of the switch device  2 , from which extend individual conducting slips, such as the second clip  42  and the third clip  52 , respectively. Referring to FIGS. 3 and 4, the first conducting plate  3 , the second conducting plate  4  and the third conducting plate  5  respectively have the first fin  31 , second fin  41  and third fin  51  extending into the switch box  11  of the main switch  1 , forming the switching contacts. The switch device  2  utilizes its post  21  at the bottom portion to press the plate  22  to engage and disengage with the first contact fin  31  in order to connect or disconnect the power of the main switch  1 . The above invention has eliminated welding. The second conducting plate  4  and the third conducting plate  5  of the present invention, as shown in FIG. 5, can have a plurality of second clips  42  and third clips  52  extending therefrom, that are controlled by a single switch device  2  to be connected or disconnected from the power supply. 
     FIG. 6 shows both the first conducting plate  3  and the third conducting plate  5  having series input connection ends  32  and  53 , and series output connection ends  33  and  54 . The series input connection ends  32  and  53 , and the series output connection ends  33  and  54  may be formed in respective male and female configurations or any other configuration. FIG. 7 shows the multiple switches connected in series by the series input connection ends  32  and  53 , and the series output connection ends  33  and  54  of the first conducting plate  3  and the third conducting plate  5 . 
     In the above example, an indicator was included within the switch device  2 . FIG. 8 shows another embodiment of the present invention that does not have an indicator incorporated in the switch device  2 . The conducting plates are of different types as well. The first conducting plate  3  has a longitudinally extended shape with the first fin  31  extending from the inner end thereof. The first conducting plate  3  has its two ends formed as the series connecting input end  32  and connecting output end  33 , respectively. The second conducting plate  4  has two ends respectively forming a pair of second clips  42  and  42 ′, and the center portion of the second conducting plate  4  is formed with a notch  411  to receive the plate  22  therein. The third conducting plate  5  has its two ends respectively forming a pair of third clips  52  and  52 ′, and the center portion thereof has a side plate  55  which has two ends formed as a connecting input end  551  and a connecting output end  552 . 
     In the assembly as shown in FIGS. 9 and 10, the first conducting plate  3  is placed in the main switch  1 , and the side plate  55  of the third conducting plate  5  crosses over the second conducting plate  4 . The connecting input end  551  and the connecting output end  552  of the third conducting plate  5  and the connecting input end  32  and the connecting output end  33  of the first conducting plate  3  are connected to the main switch, and are laid flat on respective outer sides of the main switch  1 . Owing to the second conducting plate  4  and the third conducting plate  5  being formed with multiple second and third clips  42 ,  42 ′,  52 , and  52 ′, the main switch  1  has contacts in two receptacles  6 . Thus, a switch device  2  can control two receptacles  6 , at one time. 
     The receptacle  6  as shown in the above embodiments may be formed with the pair of second clips  42  and  42 ′ and the pair of third clips  52  and  52 ′, or it may be formed integrally with the main switch. 
     FIGS. 11 and 12 show another embodiment where the main switch does not have a grounded conductor, but it has the first conducting plate  3  and the second conducting plate  4  of the positive conductors. The first and the second conducting plates  3  and  4  are controlled by the switch device  2  to cut off or connect power, wherein the second conducting plate  4  extends a second clip  42  which is the positive end of the receptacle  6 , and the third conducting plate  5  also extends a third clip  52  which functions as the grounded end. The third clip  52  is also formed with a connecting input end  53  and a connecting output end  54  to connect with the incoming grounded terminal.