Abstract:
The present invention relates to a unified power window switch for a vehicle that can open and close all the windows of the vehicle and further provide a window lock function. The unified power window switch comprises a substrate including on its top surface a rear left (RL) side first conductive line, a front left (FL) side first conductive line, a front right (FR) side first conductive line, a rear right (RR) side first conductive line, and a power supply first conductive line, and on its bottom surface an RL side second conductive line, an FL side second conductive line, an FR side second conductive line, an RR side second conductive line, and a power supply second conductive line. The switch further comprises: an RL, FL, FR, and RR side motors; a guide body attached on the top surface of the substrate; a left/right moving plate movably connected to the up and down inner surfaces of the guide body; an up/down moving plate movably connected to the inner surfaces of the left/right moving plate; a contact plate positioned on the bottom surface of the substrate; a case connected to the top portion of the substrate; and a selector switch knob connected to the top of the up/down moving plate.

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
   This application claims priority under 35 U.S.C. §119(a) on Korean Patent Application No. 10-2006-0125265 filed on Dec. 11, 2006, the entire contents of which are incorporated herein by reference. 
   BACKGROUND OF THE INVENTION 
   1. Technical Field 
   The present invention relates to a unified power window switch for a vehicle and, more particularly to a unified power window switch for a vehicle that can open and close all windows of the vehicle and further lock the windows. 
   2. Background Art 
   A power window switch for a vehicle is used to open and close a front left (FL; driver&#39;s seat side) window, a front right (FR; passenger&#39;s seat side) window, a rear left RL window and a rear right RR window. 
   Typically, a power window switch is mounted on front doors of a vehicle and another power window switch is mounted on rear doors. However, in light of the safety, a unified switch which is mounted on driver&#39;s seat and can be controlled by a driver may be preferred. 
   As depicted in  FIG. 5 , a typical unified power window switch comprises four separate switches for opening and closing FL, FR, RL and RR side windows, respectively, and lock switches for locking the respective windows. However, such a power window switch hardly serves as a ‘unified’ switch since it is composed of a plurality of separate switches, not a single switch. Due to the structure, a driver may feel inconvenient to operate the switches for opening and closing the respective windows. 
   Japanese Patent No. 2002-075132 discloses a window switch which includes a joystick-like operating element for opening and closing plural windows. With the joystick-like operating element, however, a driver cannot precisely perceive a direction of the operating element. For this reason, the driver oftentimes is required to visually confirm the direction of the operating element and the driver can be distracted, which can cause a serious safety problem. 
   The information disclosed in this Background of the Invention section is only for enhancement of understanding of the background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is already known to a person skilled in the art. 
   SUMMARY OF THE INVENTION 
   Accordingly, the present invention has been made to provide a unified power window switch that can execute eight opening/closing operation modes, such as a single opening/closing operation of an FL side window, a single opening/closing operation of an FR side window, a single opening/closing operation of an RL side window, a single opening/closing operation of an RR side window, a simultaneous opening/closing operation of the FL and FR side windows, a simultaneous opening/closing operation of the RL and RR side windows, a simultaneous opening/closing operation of the FL and RL side windows and a simultaneous opening/closing operation of the FR and RR side windows, and can execute locking functions. 
   In a preferred embodiment, the present invention provides a unified power window switch for a vehicle comprising a substrate having conductive lines, motors coupled to the conductive lines, a guide body attached on the substrate, left/right and up/down moving plates, a contact plate, a selector switch knob and a case. 
   The substrate includes on its top surface a rear left (RL) side first conductive line, a front left (FL) side first conductive line, a front right (FR) side first conductive line, a rear right (RR) side first conductive line, and a power supply first conductive line, which lines are arranged spaced apart from each other at regular intervals. The substrate includes on its bottom surface an RL side second conductive line, an FL side second conductive line, an FR side second conductive line, an RR side second conductive line, and a power supply second conductive line, which lines are arranged spaced apart from each other at regular intervals. 
   An RL side motor is coupled between the RL side first conductive line and the RL side second conductive line. An FL side motor is coupled between the FL side first conductive line and the FL side second conductive line. An FR side motor is coupled between the FR side first conductive line and the FR side second conductive line. An RR side motor is coupled between the RR side first conductive line and the RR side second conductive line. 
   The guide body is in a rectangular ring shape and attached on the top surface of the substrate. 
   The left/right moving plate is movably connected to the up and down inner surfaces of the guide body for applying an electric current to at least one of the conductive lines on the substrate. 
   The up/down moving plate is inserted into a connecting hole penetrating the middle of the substrate and movably connected to the inner surfaces of the left/right moving plate for applying an electric current to at least one of the conductive lines on the substrate. 
   The contact plate is positioned on the bottom surface of the substrate and connected to the up/down moving plate in a body for applying an electric current to at least one of the conductive lines on the substrate. 
   The case is connected to the top portion of the substrate to cover the substrate. The case defines a through-hole formed in the middle of the case. 
   The selector switch knob is connected to the top of the up/down moving plate via the through-hole of the case. 
   In a further preferred embodiment, the left/right moving plate has the shape of             and includes a first guide groove formed in the left and right directions on the top and bottom surfaces thereof and a second guide groove formed in the up and down directions on the inner surfaces thereof.
   In a still further preferred embodiment, the guide body is provided with a first guide end which is formed in the left and right directions on the up and down inner surfaces of the guide body so as to be inserted into the first guide groove of the left/right moving plate. 
   In yet a still further preferred embodiment, the up/down moving plate is provided with a second guide end which is formed in the up and down direction on the left and right lateral surfaces of the up/down moving plate so as to be inserted into the second guide groove of the left/right moving plate. 
   In another preferred embodiment, the up/down moving plate is provided with a connecting rod which is formed in the middle of the bottom surface of the up/down moving plate in a body and the contact plate defines therein a connecting hole through which the connecting rod is inserted. 
   In still another preferred embodiment, the selector switch knob is provided with a connecting projection which is formed on the bottom surface of the selector switch knob and the up/down moving plate defines in the middle of its top surface a connecting groove through which the connecting projection is inserted. 
   In yet another preferred embodiment, the up/down moving plate comprises a first conducting plate on its bottom surface and the contact plate comprises a second conducting plate on its top surface, both of which conducting plates have same shape and arranged symmetrically. Further, each of the first and second conducting plates may comprise on its surface a main conducting terminal, upper, lower, left and right conducting terminals. Preferably, the upper, lower, left and right conducting terminals are cross-shaped. Also preferably, the main conducting terminal is electrically connected to the power supply first and second conductive lines, the upper, lower, left and right conducting terminals. 
   In still yet another preferred embodiment, a unified power window switch may further comprise a window up/down operation switch between the power supply first and second conductive lines. Preferably, the UP side of the window up/down operation switch is connected to the power supply first conductive line and the DOWN side of the window up/down operation switch is connected to the power supply second conductive line. 
   It is understood that the term “vehicle” or “vehicular” or other similar term as used herein is inclusive of motor vehicles in general such as passenger automobiles including sports utility vehicles (SUV), buses, trucks, various commercial vehicles, watercraft including a variety of boats and ships, aircraft, and the like. The present unified power window switches will be particularly useful with a wide variety of motor vehicles. 
   Other aspects of the invention are discussed infra. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The above and other features of the present invention will be described with reference to certain exemplary embodiments thereof illustrated the attached drawings in which: 
       FIGS. 1A and 1B  are exploded perspective views depicting a unified power window switch in accordance with a preferred embodiment of the present invention; 
       FIG. 2  is a top view depicting a unified power window switch in accordance with a preferred embodiment of the present invention; 
       FIGS. 3A to 3H  are top views illustrating the operation methods according to respective operation modes of a unified power window switch in accordance with a preferred embodiment of the present invention; 
       FIGS. 4A to 4H  are top and bottom views illustrating contact operations according to respective operation modes of a unified power window switch in accordance with a preferred embodiment of the present invention; and 
       FIG. 5  is a circuit diagram depicting an example of a prior art power window switch. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
   Hereinafter, preferred embodiments in accordance with the present invention will be described with reference to the accompanying drawings. The preferred embodiments are provided so that those skilled in the art can sufficiently understand the present invention, but can be modified in various forms and the scope of the present invention is not limited to the preferred embodiments. 
     FIGS. 1A and 1B  are exploded perspective views depicting a unified power window switch in accordance with a preferred embodiment of the present invention, and  FIG. 2  is a top view depicting a unified power window switch in accordance with a preferred embodiment of the present invention. 
   The present invention aims at unifying eight opening/closing operation modes, such as a single opening/closing operation of a front left (FL) side window, a single opening/closing operation of a front right (FR) side window, a single opening/closing operation of a rear left (RL) side window, a single opening/closing operation of a rear right (RR) side window, a simultaneous opening/closing operation of the FL and FR side windows, a simultaneous opening/closing operation of the RL and RR side windows, a simultaneous opening/closing operation of the FL and RL side windows and a simultaneous opening/closing operation of the FR and RR side windows, and a window lock function to a single power window switch. 
   The unified power window switch in accordance with the present invention comprises a substrate  10 , an up/down moving plate  56 , a left/right moving plate  50 , a contact plate  64 , a selector switch knob  88  and a case  86 . 
   The substrate  10  is made of an insulating material in the form of a rectangular plate. The substrate  10  defines therein a connecting hole  12 . 
   An RL side first conductive line  14 , an FL side first conductive line  16 , an FR side first conductive line  18 , an RR side first conductive line  20  and a power supply first conductive line  22  are arranged spaced apart from each other at regular intervals on the top surface of the substrate  10  from the left to the right side. 
   In more detail, the RL side first conductive line  14  and the RR side first conductive line  20  in the form of “L” are attached on left and right sides on the top surface of the substrate  10 . The FL side first conductive line  16  and the FR side first conductive line  18  in the form of an approximate straight line having a shorter length are attached between the RL side first conductive line  14  and the RR side first conductive line  20 . 
   Moreover, the power supply first conductive line  22  is arranged on the substrate  10  so as to be positioned below the FL side first conductive line  16  and the FR side first conductive line  18  and between the lower ends of the RL side first conductive line  14  and the RR side first conductive line  20 . 
   On the bottom of the substrate  10  are conductive lines which are electrically connected to and symmetrically arranged with the RL side first conductive line  14 , the FL side first conductive line  16 , the FR side first conductive line  18 , the RR side first conductive line  20  and the power supply first conductive line  22 , respectively. 
   That is, an RL side second conductive line  24 , an FL side second conductive line  26 , an FR side second conductive line  28 , an RR side second conductive line  30  and a power supply second conductive line  32 , which have the same forms as those conductive lines  14 ,  16 ,  18 ,  20  and  22 , are arranged in the same arrangement on the bottom of the substrate  10 . 
   In addition, an RL side motor  34  is coupled between the RL side first and second conductive lines  14 ,  24  for driving the RL side window up and down. An FL side motor  36  is coupled between the FL side first and second conductive lines  16 ,  26  for driving the FL side window up and down. An FR side motor  38  is coupled between the FR side first and second conductive lines  18 ,  28  for driving the FR side window up and down, and an RR side motor  40  is coupled between the RR side first and second conductive lines  20 ,  30  for driving the RR side window up and down. 
   A window up/down operation switch  44  connected to a battery  42  is coupled between the power supply first and second conductive lines  22 ,  32  so as to supply battery power to the respective motors  34 ,  36 ,  38  and  40 . 
   Here, an UP side of the window up/down operation switch  44  is connected to the power supply first conductive line  22  and a DOWN side of the window up/down operation switch  44  is coupled to the power supply second conductive line  32 . 
   In addition, a guide body  46  is attached on the top surface of the substrate  10 . The guide body  46  is made of an insulating material in the form of a rectangular ring. 
   As depicted in  FIGS. 3A to 3H , the top end of the guide body  46  is arranged so as to cross the RL side first conductive line  14 , the FL side first conductive line  16 , the FR side first conductive line  18  and the RR side first conductive line  20 . The bottom end of the guide body  46  is arranged so as to cross the power supply first conductive line  22 . The left and right ends of the guide body  46  are spaced outside the RL side first conductive line  14  and the RR side first conductive line  20 , respectively. 
   A first guide end  48  extending in the left and right directions is formed on the top and bottom insides of the guide body  46 . The first guide ends  48  are inserted into first guide grooves  52  of the left/right moving plate  50 . 
   The left/right moving plate  50  is an insulating structure connected to the guide body  46  so as to be movable in the left and right directions. The left/right moving plate  50  is in the form of             when viewing from the top.
   A first guide groove  52  extending in the left and right directions is formed on the top and bottom surfaces of the left/right moving plate  50 , and a second guide groove  54  is established on both insides the left/right moving plate  50 . 
   The left/right moving plate  50  can be moved in the left and right directions in the guide body  46  as the first guide ends  48  of the guide body  46  are inserted into the first guide grooves  52  formed on the top and bottom surfaces of the left/right moving plate  50  so as to be moved slidably along the first guide grooves  52 . 
   Next, the up/down moving plate  56  is connected to the inside of the left/right moving plate  50  so as to be moved in the up and down direction, in which a connecting groove  58  is formed in the middle of the top surface thereof and a connecting rod  60  is formed in a body in the middle of the bottom surface thereof. 
   Accordingly, the up/down moving plate  56  is inserted into the connecting hole  12  which penetrates the middle of the substrate  10  and, at the same time, connected to the second guide grooves  54  formed in the inside of the left/right moving plate  50  so as to be moved straight in the up and down directions. 
   That is, as second guide ends  62  formed protruding from the left and right lateral surfaces of the up/down moving plate  56  are inserted into the second guide grooves  54  of the left/right moving plate  50  so to be slidably movable, the up/down moving plate  56  can be moved in the up and down directions in the inside of the left/right moving plate  50 . 
   Meanwhile, a contact plate  64  connected with the up/down moving plate  56  so as to be moved along the same is positioned on the bottom of the substrate  10 . Here, the connecting rod  60  of the up/down moving plate  56  is inserted into a connecting hole  66  formed on the top surface of the contact plate  64  to be connected with each other. 
   Conductive means are arranged on the up/down moving plate and the contact plate as follows. A first conducting plate  70  applying an electric current to at least one of the conductive lines on the top surface of the substrate  10  is attached on the bottom surface of the up/down moving plate  56 . A second conducting plate  72  applying an electric current to at least one of the conductive lines on the bottom of the substrate  10  is attached on the top surface of the contact plate  64 . The first and second conducting plates  70 ,  72  are arranged symmetrically and have the same shape. 
   Each of the first and second conducting plates  70 ,  72  comprises on its surface a main conducting terminal, upper, lower, left and right conducting terminals. The upper, lower, left and right conducting terminals are cross-shaped. The main conducting terminal is electrically connected to the power supply first and second conductive lines, the upper, lower, left and right conducting terminals. 
   That is, although each of the first and second conducting plates  70 ,  72  is divided into the main conducting terminal  74 , the upper, lower, left and right conducting terminals, it is an integrated conducting plate comprised of those terminals, in which the top end of the main conducting terminal  74  and the bottom end of the lower conducting terminal  78  are connected to each other in a body, the left and right conducting terminals  80  and  82  are coupled to each other in a body on the top of the lower conducting terminal  78 , and the upper conducting terminal  76  is connected to the top ends of the left and right conducting terminals  80  and  82  in a body. 
   Accordingly, the upper, lower, left and right conducting terminals  76 ,  78 ,  80  and  82  are connected to each other in the cross arrangement on the top of the main conducting terminal  74 . 
   Meanwhile, a case  86  defining therein a through-hole  84  is mounted to the top portion of the substrate  10 . The case covers the substrate and protects the left/right moving plate  50 , the up/down moving plate  56  and the respective conductive lines from the outside. 
   Also, a selector switch knob  88  to be operated in the up and down directions and in the left right directions is mounted in the middle of the top surface of the case  86 . A connecting projection  90  is formed on the bottom surface of the selector switch knob  88 . Accordingly, as the connecting projection  90  is inserted into the through-hole  84  of the case  86  and then inserted into the connecting groove  58  formed in the middle of the top surface of the up/down moving plate  56 , the selector switch knob  88  is connected to the up/down moving plate  56 . 
   Next, the respective operation modes of the unified power window switch in accordance with preferred embodiments of the present invention as described above will be described as follows. 
     FIGS. 3A to 3H  are top views illustrating the respective operation modes selected according to the moving directions of the up/down moving plate and the left/right moving direction of the unified power window switch in accordance with a preferred embodiment of the present invention, and  FIGS. 4A to 4H  are top and bottom views illustrating contact operations according to the respective operation modes of the unified power window switch in accordance with a preferred embodiment of the present invention. 
   (1) Single Opening/Closing Operation Mode of the FL Side Window (Refer to  FIGS. 3A and 4A ) 
   First, the selector switch knob  88  is moved by hand straight in the up direction and, at the same time, straight in the left direction. 
   According to the movement of the selector switch knob  88  in the up direction, the second guide ends  62  of the up/down moving plate  56  are slidably moved in the up direction along the second guide grooves  54  of the left/right moving plate  50  and the up/down moving plate  56  is thereby moved in the up direction. 
   Subsequently, according to the movement of the selector switch knob  88  in the left direction, the first guide ends  48  of the guide body  46  are slid in situ in the first guide grooves  52  of the left/right moving plate  50  and the left/right moving plate  50  is thereby moved left. Here, the up/down moving plate  56  is being moved in the left direction along the left/right moving plate  50 . 
   Accordingly, only the upper conducting terminal  76  of the first conducting plate  70  of the up/down moving plate  56  is being electrically connected to the FL side first conductive line  16  on the substrate  10 . 
   Subsequently, if the window up/down operation switch  44  is operated to the UP side, the battery power is applied to the main conducting terminal  74  of the first conducting plate  70  through the power supply first conducive line  22  and, at the same time, supplied to the FL side first conductive line  16  through the upper conducting terminal  76  of the first conducting plate  70  so as to drive the FL side motor  36  coupled to the FL side first conductive line  16 , thus moving the FL side window upward. 
   Here, the contact plate  64  is being moved in the same direction along the up/down moving plate  56  and only the FL side second conductive line  26  of the bottom side of the substrate  10  is thereby being electrically connected to the power supply second conductive line  32  by the upper conducting terminal  76  of the second conducting plate  72  attached on the top surface of the contact plate  64 . 
   The ground connection of the FL side motor  36  is made through a grounding point adjacent to the window up/down operation switch  44  in the sequential order of the motor  36 , the FL side second conductive line  26 , the upper conducting terminal  76  of the second conducting plate  72 , the power supply second conductive line  32  and the window up/down operation switch  44 . 
   On the contrary, if the window up/down operation switch  44  is operated to the DOWN side, the battery power is applied to the main conducting terminal  74  of the second conducting plate  72  through the power supply second conducive line  32  and, at the same time, supplied to the FL side second conductive line  26  through the upper conducting terminal  76  of the second conducting plate  72  so as to drive the FL side motor  36  coupled to the FL side second conductive line  26  in the opposite direction, thus moving the FL side window downward. 
   Of course, the ground connection of the FL side motor  36  is made through a grounding point adjacent to the window up/down operation switch  44  in the sequential order of the motor  36 , the FL side first conductive line  16 , the upper conducting terminal  76  of the first conducting plate  70 , the power supply first conductive line  22  and the window up/down operation switch  44 . 
   (2) Single Opening/Closing Operation Mode of the FR Side Window (Refer to  FIGS. 3B and 4B ) 
   First, the selector switch knob  88  is moved by hand straight in the up direction and, at the same time, moved straight in the right direction. 
   According to the movement of the selector switch knob  88  in the up direction, the second guide ends  62  of the up/down moving plate  56  are slidably moved in the up direction along the second guide grooves  54  of the left/right moving plate  50  and thereby the up/down moving plate  56  is moved in the up direction. 
   Subsequently, according to the movement of the selector switch knob  88  in the right direction, the first guide ends  48  of the guide body  46  are slid in situ in the first guide grooves  52  of the left/right moving plate  50  and thereby the left/right moving plate  50  is moved right. Here, the up/down moving plate  56  is being moved in the right direction along the left/right moving plate  50 . 
   Accordingly, only the upper conducting terminal  78  of the first conducting plate  70  of the up/down moving plate  56  is being electrically connected to the FR side first conductive line  18  on the substrate  10 . 
   Subsequently, if the window up/down operation switch  44  is operated to the UP side, the battery power is applied to the main conducting terminal  74  of the first conducting plate  70  through the power supply first conducive line  22  and, at the same time, supplied to the FR side first conductive line  18  through the upper conducting terminal  78  of the first conducting plate  70  so as to drive the FR side motor  38  coupled to the FR side first conductive line  18 , thus moving the FR side window upward. 
   Here, the contact plate  64  is being moved in the same direction along the up/down moving plate  56  and thereby only the FR side second conductive line  28  of the bottom side of the substrate  10  is being electrically connected to the power supply second conductive line  32  by the upper conducting terminal  78  of the second conducting plate  72  attached on the top surface of the contact plate  64 . 
   The ground connection of the FR side motor  38  is made through a grounding point adjacent to the window up/down operation switch  44  in the sequential order of the motor  38 , the FR side second conductive line  28 , the upper conducting terminal  78  of the second conducting plate  72 , the power supply second conductive line  32  and the window up/down operation switch  44 . 
   On the contrary, if the window up/down operation switch  44  is operated to the DOWN side, the battery power is applied to the main conducting terminal  74  of the second conducting plate  72  through the power supply second conducive line  32  and, at the same time, supplied to the FR side second conductive line  28  through the upper conducting terminal  78  of the second conducting plate  72  so as to drive the FR side motor  38  coupled to the FR side second conductive line  28  in the opposite direction, thus moving the FR side window downward. 
   Of course, the ground connection of the FR side motor  38  is made through a grounding point adjacent to the window up/down operation switch  44  in the sequential order of the motor  38 , the FR side first conductive line  18 , the upper conducting terminal  78  of the first conducting plate  70 , the power supply first conductive line  22  and the window up/down operation switch  44 . 
   (3) Single Opening/Closing Operation Mode of the RL Side Window (Refer to  FIGS. 3C and 4C ) 
   First, the selector switch knob  88  is moved by hand straight in the down direction and, at the same time, moved straight in the left direction. 
   According to the movement of the selector switch knob  88  in the down direction, the second guide ends  62  of the up/down moving plate  56  are slidably moved in the down direction along the second guide grooves  54  of the left/right moving plate  50  and thereby the up/down moving plate  56  is moved in the down direction. 
   Subsequently, according to the movement of the selector switch knob  88  in the left direction, the first guide ends  48  of the guide body  46  are slid in situ in the first guide grooves  52  of the left/right moving plate  50  and thereby the left/right moving plate  50  is moved left. Here, the up/down moving plate  56  is being moved in the left direction along the left/right moving plate  50 . 
   Accordingly, only the left conducting terminal  80  of the first conducting plate  70  of the up/down moving plate  56  is being electrically connected to the RL side first conductive line  14  on the substrate  10 . 
   Subsequently, if the window up/down operation switch  44  is operated to the UP side, the battery power is applied to the main conducting terminal  74  of the first conducting plate  70  through the power supply first conducive line  22  and, at the same time, supplied to the RL side first conductive line  14  through the left conducting terminal  80  of the first conducting plate  70  so as to drive the RL side motor  34  coupled to the RL side first conductive line  14 , thus moving the RL side window upward. 
   Here, the contact plate  64  is being moved in the same direction along the up/down moving plate  56  and thereby only the RL side second conductive line  24  of the bottom side of the substrate  10  is being electrically connected to the second conductive line  32  by the left conducting terminal  80  of the second conducting plate  72  attached on the top surface of the contact plate  64 . 
   The ground connection of the RL side motor  34  is made through a grounding point adjacent to the window up/down operation switch  44  in the sequential order of the motor  34 , the RL side second conductive line  24 , the left conducting terminal  80  of the second conducting plate  72 , the power supply second conductive line  32  and the window up/down operation switch  44 . 
   On the contrary, if the window up/down operation switch  44  is operated to the DOWN side, the battery power is applied to the main conducting terminal  74  of the second conducting plate  72  through the power supply second conducive line  32  and, at the same time, supplied to the RL side second conductive line  24  through the left conducting terminal  80  of the second conducting plate  72  so as to drive the RL side motor  34  coupled to the RL side second conductive line  24  in the opposite direction, thus moving the RL side window downward. 
   Of course, the ground connection of the RL side motor  34  is made through a grounding point adjacent to the window up/down operation switch  44  in the sequential order of the motor  34 , the RL side first conductive line  14 , the left conducting terminal  80  of the first conducting plate  70 , the power supply first conductive line  22  and the window up/down operation switch  44 . 
   (4) Single Opening/Closing Operation Mode of the RR Side Window (Refer to  FIGS. 3D and 4D ) 
   First, the selector switch knob  88  is moved by hand straight in the down direction and, at the same time, moved straight in the right direction. 
   According to the movement of the selector switch knob  88  in the down direction, the second guide ends  62  of the up/down moving plate  56  are slidably moved in the down direction along the second guide grooves  54  of the left/right moving plate  50  and thereby the up/down moving plate  56  is moved in the down direction. 
   Subsequently, according to the movement of the selector switch knob  88  in the right direction, the first guide ends  48  of the guide body  46  are slid in situ in the first guide grooves  52  of the left/right moving plate  50  and thereby the left/right moving plate  50  is moved right. Here, the up/down moving plate  56  is being moved in the right direction along the left/right moving plate  50 . 
   Accordingly, only the right conducting terminal  82  of the first conducting plate  70  of the up/down moving plate  56  is being electrically connected to the RR side first conductive line  20  on the substrate  10 . 
   Subsequently, if the window up/down operation switch  44  is operated to the UP side, the battery power is applied to the main conducting terminal  74  of the first conducting plate  70  through the power supply first conducive line  22  and, at the same time, supplied to the RR side first conductive line  20  through the right conducting terminal  82  of the first conducting plate  70  so as to drive the RR side motor  40  coupled to the RR side first conductive line  20 , thus moving the RR side window upward. 
   Here, the contact plate  64  is being moved in the same direction along the up/down moving plate  56  and thereby only the RR side second conductive line  30  of the bottom side of the substrate  10  is being electrically connected to the power supply second conductive line  32  by the right conducting terminal  82  of the second conducting plate  72  attached on the top surface of the contact plate  64 . 
   The ground connection of the RR side motor  40  is made through a grounding point adjacent to the window up/down operation switch  44  in the sequential order of the motor  40 , the RR side second conductive line  30 , the right conducting terminal  82  of the second conducting plate  72 , the power supply second conductive line  32  and the window up/down operation switch  44 . 
   On the contrary, if the window up/down operation switch  44  is operated to the DOWN side, the battery power is applied to the main conducting terminal  74  of the second conducting plate  72  through the power supply second conducive line  32  and, at the same time, supplied to the RR side second conductive line  30  through the right conducting terminal  82  of the second conducting plate  72  so as to drive the RR side motor  40  coupled to the RR side second conductive line  30  in the opposite direction, thus moving the RR side window downward. 
   Of course, the ground connection of the RR side motor  40  is made through a grounding point adjacent to the window up/down operation switch  44  in the sequential order of the motor  40 , the RR side first conductive line  20 , the right conducting terminal  82  of the first conducting plate  70 , the power supply first conductive line  22  and the window up/down operation switch  44 . 
   (5) Simultaneous Opening/Closing Operation Mode of the FL and FR Side Windows (Refer to  FIGS. 3E and 4E ) 
   First, the selector switch knob  88  is moved by hand straight in the up direction. 
   According to the movement of the selector switch knob  88  in the up direction, the second guide ends  62  of the up/down moving plate  56  are slidably moved in the up direction along the second guide grooves  54  of the left/right moving plate  50  and thereby the up/down moving plate  56  is moved in the up direction. 
   Here, the left/right moving plate  50  is not moved but kept in a fixed state (neutral state). 
   Accordingly, the left and right conducting terminals  80  and  82  of the first conducting plate  70  of the up/down moving plate  56  are being electrically connected to the FL side first conductive line  16  and the FR side first conductive line  18  on the substrate  10 , respectively. 
   Subsequently, if the window up/down operation switch  44  is operated to the UP side, the battery power is applied to the main conducting terminal  74  of the first conducting plate  70  through the power supply first conducive line  22  and, at the same time, supplied to the FL side first conductive line  16  and the FR side first conductive line  18  through the left and right conducting terminals  80  and  82  of the first conducting plate  70  so as to drive the FL side motor  36  coupled to the FL side first conductive line  16  and the FR side motor  38  coupled to the FR side first conductive line  18 , thus moving the FL and FR side windows upward simultaneously. 
   Here, the contact plate  64  is being moved in the same direction along the up/down moving plate  56  and thereby the FL side second conductive line  26  and the FR side second conductive line  28  of the bottom side of the substrate  10  are being electrically connected to the power supply second conductive line  32  by the left and right conducting terminals  80  and  82  of the second conducting plate  72  attached on the top surface of the contact plate  64 . 
   The ground connections of the FL and FR side motors  36  and  38  are made through grounding points adjacent to the window up/down operation switch  44  in the sequential order of the motors  36  and  38 , the FL and FR side second conductive lines  26  and  28 , the left and right conducting terminals  80  and  82  of the second conducting plate  72 , the power supply second conductive line  32  and the window up/down operation switch  44 . 
   On the contrary, if the window up/down operation switch  44  is operated to the DOWN side, the battery power flows in the opposite direction so as to drive the FL and FR side motors  36  and  38 , thus moving the FL and FR side windows downward simultaneously. 
   (6) Simultaneous Opening/Closing Operation Mode of the RL and RR Side Windows (Refer to  FIGS. 3F and 4F ) 
   First, the selector switch knob  88  is moved by hand straight in the down direction. 
   According to the movement of the selector switch knob  88  in the down direction, the second guide ends  62  of the up/down moving plate  56  are slidably moved in the down direction along the second guide grooves  54  of the left/right moving plate  50  and thereby the up/down moving plate  56  is moved in the down direction. 
   Here, the left/right moving plate  50  is not moved but kept in a fixed state (neutral state). 
   Accordingly, the left and right conducting terminals  80  and  82  of the first conducting plate  70  of the up/down moving plate  56  are being electrically connected to the RL side first conductive line  14  and the RR side first conductive line  20  on the substrate  10 , respectively. 
   Subsequently, if the window up/down operation switch  44  is operated to the UP side, the battery power is applied to the main conducting terminal  74  of the first conducting plate  70  through the power supply first conducive line  22  and, at the same time, supplied to the RL side first conductive line  14  and the RR side first conductive line  20  through the left and right conducting terminals  80  and  82  of the first conducting plate  70  so as to drive the RL side motor  34  coupled to the RL side first conductive line  14  and the RR side motor  40  coupled to the RR side first conductive line  20 , thus moving the RL and RR side windows upward simultaneously. 
   Here, the contact plate  64  is being moved in the same direction along the up/down moving plate  56  and thereby the RL side second conductive line  24  and the RR side second conductive line  30  of the bottom side of the substrate  10  are being electrically connected to the power supply second conductive line  32  by the left and right conducting terminals  80  and  82  of the second conducting plate  72  attached on the top surface of the contact plate  64 . 
   The ground connections of the RL and RR side motors  34  and  40  are made through grounding points adjacent to the window up/down operation switch  44  in the sequential order of the motors  34  and  40 , the RL and RR side second conductive lines  24  and  30 , the left and right conducting terminals  80  and  82  of the second conducting plate  72 , the power supply second conductive line  32  and the window up/down operation switch  44 . 
   On the contrary, if the window up/down operation switch  44  is operated to the DOWN side, the battery power flows in the opposite direction so as to drive the RL and RR side motors  34  and  40 , thus moving the RL and RR side windows downward simultaneously. 
   (7) Simultaneous Opening/Closing Operation Mode of the FL and RL Side Windows (Refer to  FIGS. 3G and 4G ) 
   First, the selector switch knob  88  is moved by hand straight in the left direction. 
   According to the movement of the selector switch knob  88  in the left direction, the first guide ends  48  of the guide body  46  are slid in situ in the first guide grooves  52  of the left/right moving plate  50  and thereby the left/right moving plate  50  is moved in the left direction. Here, the up/down moving plate  56  is being moved in the left direction along the left/right moving plate  50 . 
   Here, when the selector switch knob  88  is moved in the left direction, the up/down moving plate  56  is not moved but kept in a fixed state (neutral state). 
   Accordingly, the upper conducting terminal  76  of the first conducting plate  70  of the up/down moving plate  56  is being electrically connected to the FL side first conductive line  16  and, at the same time, the lower conducting terminal  78  of the first conducting plate  70  is being electrically connected to the RL side first conductive line  14 . 
   Subsequently, if the window up/down operation switch  44  is operated to the UP side, the battery power is applied to the main conducting terminal  74  of the first conducting plate  70  through the power supply first conducive line  22  and, at the same time, supplied to the FL side first conductive line  16  and the RL side first conductive line  14  through the upper and lower conducting terminals  76  and  78  of the first conducting plate  70  so as to drive the FL side motor  36  coupled to the FL side first conductive line  16  and the RL side motor  34  coupled to the RL side first conductive line  14 , thus moving the FL and RL side windows upward simultaneously. 
   Here, the contact plate  64  is being moved in the same direction along the up/down moving plate  56  and thereby the FL side second conductive line  26  and the RL side second conductive line  24  of the bottom side of the substrate  10  are being electrically connected to the power supply second conductive line  32  by the upper and lower conducting terminals  76  and  78  of the second conducting plate  72  attached on the top surface of the contact plate  64 . 
   The ground connections of the FL and RL side motors  36  and  34  are made through grounding points adjacent to the window up/down operation switch  44  in the sequential order of the motors  36  and  34 , the FL and RL side second conductive lines  26  and  24 , the upper and lower conducting terminals  76  and  78  of the second conducting plate  72 , the power supply second conductive line  32  and the window up/down operation switch  44 . 
   On the contrary, if the window up/down operation switch  44  is operated to the DOWN side, the battery power flows in the opposite direction so as to drive the FL and RL side motors  36  and  34 , thus moving the FL and RL side windows downward simultaneously. 
   (8) Simultaneous Opening/Closing Operation Mode of the FR and RR Side Windows (Refer to  FIGS. 3H and 4H ) 
   First, the selector switch knob  88  is moved by hand straight in the right direction. 
   According to the movement of the selector switch knob  88  in the right direction, the first guide ends  48  of the guide body  46  are slid in situ in the first guide grooves  52  of the left/right moving plate  50  and thereby the left/right moving plate  50  is moved in the right direction. Here, the up/down moving plate  56  is being moved in the right direction along the left/right moving plate  50 . 
   Here, when the selector switch knob  88  is moved in the right direction, the up/down moving plate  56  is not moved but kept in a fixed state (neutral state). 
   Accordingly, the upper conducting terminal  76  of the first conducting plate  70  of the up/down moving plate  56  is being electrically connected to the FR side first conductive line  18  and, at the same time, the lower conducting terminal  78  of the first conducting plate  70  is being electrically connected to the RR side first conductive line  20 . 
   Subsequently, if the window up/down operation switch  44  is operated to the UP side, the battery power is applied to the main conducting terminal  74  of the first conducting plate  70  through the power supply first conducive line  22  and, at the same time, supplied to the FR side first conductive line  18  and the RR side first conductive line  20  through the upper and lower conducting terminals  76  and  78  of the first conducting plate  70  so as to drive the FR side motor  38  coupled to the FR side first conductive line  18  and the RR side motor  40  coupled to the RR side first conductive line  20 , thus moving the FR and RR side windows upward simultaneously. 
   Here, the contact plate  64  is being moved in the same direction along the up/down moving plate  56  and thereby the FR side second conductive line  28  and the RR side second conductive line  30  of the bottom side of the substrate  10  are being electrically connected to the power supply second conductive line  32  by the upper and lower conducting terminals  76  and  78  of the second conducting plate  72  attached on the top surface of the contact plate  64 . 
   The ground connections of the FR and RR side motors  38  and  40  are made through grounding points adjacent to the window up/down operation switch  44  in the sequential order of the motors  38  and  40 , the FR and RR side second conductive lines  28  and  30 , the upper and lower conducting terminals  76  and  78  of the second conducting plate  72 , the power supply second conductive line  32  and the window up/down operation switch  44 . 
   On the contrary, if the window up/down operation switch  44  is operated to the DOWN side, the battery power flows in the opposite direction so as to drive the FR and RR side motors  38  and  40 , thus moving the FR and RR side windows downward simultaneously. 
   (9) Window Lock Mode 
   The window lock mode is directed to a state where the up/down moving plate  56  and the left/right moving plate  50  are not moved but kept in a neutral state. 
   That is, since the first conducting plate  70  of the up/down moving plate  56  and the second conducting plate  72  of the contact plate  64  are not being electrically connected to the respective conductive lines, the battery power is not supplied to the respective motors and thereby the windows are not moved up or down even if the window up/down operation switch  44  is operated up or down. 
   As described above, according to the unified power window switch in accordance with the present invention, it is possible to execute the eight opening/closing operation modes, such as the single opening/closing operation of the FL side window, the single opening/closing operation of the FR side window, the single opening/closing operation of the RL side window, the single opening/closing operation of the RR side window, the simultaneous opening/closing operation of the FL and FR side windows, the simultaneous opening/closing operation of the RL and RR side windows, the simultaneous opening/closing operation of the FL and RL side windows and the simultaneous opening/closing operation of the FR and RR side windows, and the window lock function only by a single switch. 
   Moreover, since it is possible to exclude the several switches established separately in the existing power window main switch, the present invention can provide free modifications to the design of the unified power window switch and, at the same time, reduce the cost and weight. 
   The invention has been described in detail with reference to preferred embodiments thereof. However, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.