Patent Publication Number: US-7895868-B2

Title: Cylinder lock and unlocking device comprising thereof

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a cylinder lock and an unlocking device comprising thereof, in more particular, to a cylinder lock and un unlocking device comprising thereof to unlock a door locking mechanism in a vehicle door panel. 
     2. Related Art 
     For example, there is a conventional locking and unlocking device comprising a clutch (a link mechanism for actuator) intermitting by a pivotal operation of a regular key (a matching key) (JP-A 2002-129805). 
     This locking and unlocking device comprises a link mechanism for handle which produces a pivotal movement by a handle extraction operation, a rod for handle which produces a descending linear motion by the pivotal movement of the link mechanism for handle, and a coupling lever mechanism which transmits the linear motion of the rod for handle to the above-mentioned link mechanism for actuator. 
     Furthermore, this locking and unlocking device comprises a cylinder lock housed in a handle with a rotor pivoting by an insertion pivotal operation of the matching key, a rod for cylinder lock pivoting by a pivotal movement of the rotor of the cylinder lock, and a key lever mechanism transmitting the pivotal movement of the rod for the cylinder lock to the above-mentioned link mechanism for actuator. 
     In such a locking and unlocking device, when the rotor pivots in one direction from a neutral position by an insertion pivotal operation of the matching key into the cylinder lock, this pivot movement is transmitted to the key lever mechanism via the rod for cylinder lock, the intermittence of the link mechanism for actuator in a door lock actuator is switched by the operation of the key lever mechanism and the state of the door locking mechanism is changed from unlocking to locking. 
     When the handle is subsequently operated in a direction to open the door panel, this handle extraction operation is transmitted to the rod for handle via the link mechanism for handle. When the rod for handle moves downwards linearly by the handle extraction operation, the linear motion is transmitted to the link mechanism for actuator via the coupling lever mechanism. When the link mechanism for actuator is activated, since the door locking mechanism is in an unlocking state, the door panel is opened. 
     Meanwhile, when the rotor pivots in another direction from the neutral position by an insertion pivotal operation of the matching key into the cylinder lock, this pivot movement is transmitted to the key lever mechanism via the rod for cylinder lock, the link mechanism for actuator is activated by the operation of the key lever mechanism and the state of the door locking mechanism is changed from locking to unlocking. 
     However, in the locking and unlocking device disclosed by JP-A 2002-129805, since a rod for cylinder lock and a key lever mechanism are also provided other than a clutch, a cylinder lock and a handle, there were problems in that the number of parts assembled increases, the entire structure becomes complicated and the cost also increases. 
     Furthermore, in the locking and unlocking device disclosed by JP-A 2002-129805, since it has a structure in which the rod for cylinder lock and the key lever mechanism are intermediated between the cylinder lock and the clutch, there were problems in that the outside dimension becomes large and the entire structure grows in size. 
     THE SUMMARY OF THE INVENTION 
     Therefore, it is an object of the invention to provide a cylinder lock and an unlocking device comprising thereof by which it is possible to reduce the number of parts assembled resulting in lower costs and miniaturization or simplification of the entire structure. 
     [1] According to the present invention, a cylinder lock comprising: 
     a sleeve having a plurality of locking holes; 
     a key plug housed in the sleeve and having an output portion to output an interrupted motion of a clutch device by moving in an insertion and extraction direction by an insertion and extraction of a matching key; and 
     a plurality of key matching members movably supported to the key plug, arranged to be insertable and removable in the plurality of locking holes respectively, and withdrawn from the plurality of locking holes respectively by an insertion of the matching key into the key plug; 
     wherein a portion of key matching members among the plurality of key matching members has a hook protruding toward a key insertion direction, and 
     the sleeve has an engaging portion engaging with the hook by a movement in a key insertion direction of the key plug in locking holes among the plurality of locking holes which correspond to the portion of key matching members in the state that the plurality of key matching members are inserted into the plurality of locking holes. 
     [2] According to the present invention, an unlocking device comprising: 
     a cylinder lock operated by an insertion of a matching key; 
     an operating handle producing an unlocking movement for unlocking a door locking mechanism; and 
     a clutch device for transmitting the unlocking movement of the operating handle to the door locking mechanism by an operation of the cylinder lock; 
     wherein the cylinder lock includes: 
     a sleeve having a plurality of locking holes; 
     a key plug housed in the sleeve and having an output portion to output an interrupted motion of a clutch device by moving in an insertion and extraction direction by an insertion and extraction of a matching key; and 
     a plurality of key matching members movably supported to the key plug, arranged to be insertable and removable in the plurality of locking holes respectively, and withdrawn from the plurality of locking holes respectively by an insertion of the matching key into the key plug; 
     wherein a portion of key matching members among the plurality of key matching members has a hook protruding toward a key insertion direction, and 
     the sleeve has an engaging portion engaging with the hook by a movement in a key insertion direction of the key plug in locking holes among the plurality of locking holes which correspond to the portion of key matching members in the state that the plurality of key matching members are inserted into the plurality of locking holes. 
     EFFECT OF THE INVENTION 
     According to present invention, it is possible to reduce the number of parts assembled and to seek lower costs and miniaturization or simplification of the entire structure. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Next, the present invention will be explained in more detail in conjunction with appended drawings, wherein: 
         FIG. 1  is an exploded perspective view shown for explaining the entirety of an unlocking device in a preferred embodiment according to the present invention; 
         FIG. 2  is a cross sectional view shown for explaining the entirety of the unlocking device in the preferred embodiment according to the present invention; 
         FIG. 3  is a rear view shown for explaining the entirety of the unlocking device in the preferred embodiment according to the present invention; 
         FIG. 4A  is a side view shown for explaining the entirety of the unlocking device in the preferred embodiment according to the present invention; 
         FIG. 5A  and  FIG. 5B  are simplified cross sectional views shown for explaining a main section of the unlocking device (a cylinder lock) in the preferred embodiment according to the present invention; 
         FIG. 6A  and  FIG. 6B  are simplified cross sectional views shown for explaining the operation of a key matching member with a hook during picking of the unlocking device (a cylinder lock) in the preferred embodiment according to the present invention; 
         FIG. 7A  and  FIG. 7B  are cross sectional views shown for explaining a first key plug locking mechanism of the unlocking device (a cylinder lock) in the preferred embodiment according to the present invention; 
         FIG. 8  is a cross sectional view shown for explaining a second key plug locking mechanism of the unlocking device (a cylinder lock) in the preferred embodiment according to the present invention; 
         FIG. 9A  and  FIG. 9B  are a cross sectional view and a rear view showing a standby state of the unlocking device in the preferred embodiment according to the present invention; 
         FIG. 10A  and  FIG. 10B  are a cross sectional view and a rear view shown for explaining the operation when a matching key is inserted into a cylinder lock of the unlocking device in the preferred embodiment according to the present invention; 
         FIG. 11A  and  FIG. 11B  are a cross sectional view and a rear view shown for explaining the operation when the operating handle of the unlocking device is operated in the preferred embodiment according to the present invention; 
         FIG. 12A  and  FIG. 12B  are a cross sectional view and a rear view shown for explaining the operation when an unauthorized key is inserted into the cylinder lock of the unlocking device in the preferred embodiment according to the present invention; 
         FIG. 13A  and  FIG. 13B  are a cross sectional view and a rear view shown for explaining the operation when the operating handle is operated in the standby state of the unlocking device in the preferred embodiment according to the present invention. 
         FIG. 14A  and  FIG. 14B  are cross sectional views shown for explaining a variation of a tumbler in the unlocking device (a cylinder lock) in the preferred embodiment according to the present invention. 
     
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Preferred Embodiment 
       FIG. 1  is an exploded perspective view shown for explaining the entirety of an unlocking device in a preferred embodiment according to the present invention.  FIG. 2  is a cross sectional view shown for explaining the entirety of the unlocking device in the preferred embodiment according to the present invention.  FIG. 3  is a rear view shown for explaining the entirety of the unlocking device in the preferred embodiment according to the present invention.  FIG. 4A  is a side view shown for explaining the entirety of the unlocking device in the preferred embodiment according to the present invention.  FIG. 5A  and  FIG. 5B  are simplified cross sectional views shown for explaining a main section of the unlocking device (a cylinder lock) in the preferred embodiment according to the present invention, where  FIG. 5A  shows an insertion state of a key matching member with a hook into a locking hole and  FIG. 5B  shows an insertion state of a key matching member other than the key matching member with a hook into a locking hole, respectively.  FIG. 6A  and  FIG. 6B  are simplified cross sectional views shown for explaining the operation of a key matching member with a hook during of picking of the unlocking device (a cylinder lock) in the preferred embodiment according to the present invention, where  FIG. 6A  shows a locking state of the hook and an engaging portion and  FIG. 6B  shows the state that the engagement thereof is unlocked, respectively.  FIG. 7A  and  FIG. 7B  are cross sectional views shown for explaining a first key plug locking mechanism of the unlocking device (a cylinder lock) in the preferred embodiment according to the present invention, where  FIG. 7A  shows a standby (initial) state and  FIG. 7B  shows a key insertion state, respectively.  FIG. 8  is a cross sectional view shown for explaining a second key plug locking mechanism of the unlocking device (a cylinder lock) in the preferred embodiment according to the present invention. 
     (Overall Structure of the Unlocking Device) 
     In  FIG. 1 , an unlocking device indicated by a reference number  1  substantially comprises a cylinder lock  2  activated by an insertion of a matching key, an operating handle  3  producing an unlocking movement to unlock a door locking mechanism (not shown), a clutch device  4  for transmitting the unlocking movement to the door locking mechanism (a door latch mechanism) by an operation of the cylinder lock  2  and a handle operation force transmission mechanism  5  for transmitting an operating force (a pivoting force) of the operating handle  3  to the clutch device  4 . 
     (Structure of the Cylinder Lock  2 ) 
     As shown in  FIG. 1  to  FIG. 4 , the cylinder lock  2  comprises a body  6  as am armoring member, a sleeve  7  housed in the body  6 , a key plug  8  having an output portion  80  to output an interrupted motion of the clutch device  4  by moving in the sleeve  7  in an insertion and extraction direction by an insertion and extraction of a matching key, tumblers (locking plates)  9 ,  9 , - - - as a key matching member movably supported to the key plug  8 , a first key plug locking mechanism  10  for locking the key plug  8  into the sleeve  7  in the state that the tumblers  9 ,  9 , - - - are inserted (locked) into tumbler locking holes  73 ,  73 , - - - (described later) in the sleeve  7  and a second key plug locking mechanism  11  for locking the key plug  8  into the sleeve  7  in the output state of the output portion  80  by an insertion of a matching key into the key plug  8 , and is provided on a vehicle frame (a door panel)  200 . 
     On the frame  200 , rising portions  200 A and  200 B are provided in parallel with a predetermined interval in an insertion and extraction direction of the matching key and an orthogonal direction within a pivot plane of the operating handle  3 . A pin  201  for a lever pivoting spindle pivotally supporting a transmitting lever  5 A of the handle operation force transmission mechanism  5  is fixed between the rising portions  200 A and  200 B. 
     As shown in  FIG. 1 , the body  6  comprises a rectangular box having a housing space  60  for housing the sleeve  7  and a key insert hole (a key plug insertion slot)  61  opening on a key insert (pull-out) side edge face, and is fixed in the frame  200 . As shown in  FIG. 2 , a penetrating window  62  opening on one side of the body piece is provided in the body  6 . A case  12  housing the clutch device  4  inside is arranged on the back side of the body  6 . 
     As shown in  FIG. 1  and  FIG. 2 , the case  12  is formed by a case main body  12 A in a substantially cup cylindrical shape having the housing space  120  opening on the key insert side and a wire insertion hole (not shown) being communicated with this housing space  120 , and a lid  12 B in an annular shape blocking the opening on the key insert side of this case main body  12 A. 
     Stopper surfaces  121 A and  121 B to restrict the pivot movement of an input clutch element (described later) in the clutch device  4  at a position in a circumferential direction  2  of the case  12  are provided on the case main body  12 A by forming a notch  121  for lever pivot on a part of the opening. A rising wall  122  having a housing space  122 A having a substantially D-shape cross section being communicated with the housing space  120  and a mounting piece  13  having a substantially L-shape cross section are provided integrally at the bottom of the case main body  12 A and on the periphery thereof, respectively. 
     A wire wobble restricting surface  130 A to restrict wobbling of a wire  14  connected to the door locking mechanism (not shown) is provided on the mounting piece  13  by forming a notch  130  for hoisting a wire. 
     As shown in  FIG. 1  and  FIG. 2 , the sleeve  7  comprises a sleeve main body  7 A in a rectangular box shape having an opening  71  being communicated with a first housing space  70  which can accommodate a first barrel and a second barrel (described later) of the key plug  8  and the key insert hole  61 , and a sleeve barrel  7 B in a substantially cylindrical shape having a second housing space  72  being communicated with the first housing space  70  of the sleeve main body  7 A. The sleeve  7  is arranged to be movable between the key insert side and the key anti-insertion side of the housing space  60  in the body  6 , and is configured to move and return to the key insert side by a spring (a compression spring)  15  for the return of the sleeve. 
     As shown in  FIG. 5A  and  FIG. 5B , the tumbler locking holes  73 ,  73 , - - - opening inside the sleeve  7  are provided on the sleeve main body  7 A. As shown in  FIG. 5A , an engaging portion of  73 B which is engaged with a hook  9 A (described later) of the tumbler  9  by a movement of the key plug  8  in a key insertion direction is provided in a portion of tumbler locking holes  73  among the tumbler locking holes  73 ,  73 , - - - in the state that the tumblers  9  are inserted thereto. 
     A first through-hole  74  penetrating one side of the sleeve  7  is provided on the key anti-insertion side end of the sleeve main body  7 A. A body side opening of the first through-hole  74  is blocked by a cover  75 . Furthermore, a second through-hole  76  penetrating another side of the sleeve  7  and being communicated with the penetrating window  62  of the body  6  is provided on the key anti-insertion side end of the sleeve main body  7 A. A spring receiving portion  77  having a first receiving surface  77 A and a second receiving surface  77 B (shown in  FIG. 8 ) is provided in a protruding condition on the inner surface of the second through-hole  76 . The first receiving surface  77 A and the second receiving surface  77 B of the spring receiving portion  77  are configured to receive a resilient force of a locking piece of the second key plug locking mechanism  11  in the state that the tumblers  9 ,  9 , - - - are inserted into the tumbler locking holes  73 ,  73 , - - - and the state that the tumblers  9 ,  9 , - - - are withdrawn from the tumbler locking holes  73 ,  73 , - - - (the key plug  8  is locked into the sleeve  7  by the second key plug locking mechanism  11 ), respectively. 
     The sleeve barrel  7 B comprises barrel elements  78  and  79  arranged in parallel having equal intervals in a circumferential direction of the sleeve  7  and is provided integrally on an edge face opposite to the key insert side edge face of the sleeve main body  7 A (a rim of the key ant-insertion side opening of the first housing space  70 ). 
     As shown in  FIG. 1  and  FIG. 2 , the key plug  8  has a first barrel  8 A, a second barrel  8 B and a third barrel  8 C, and is arranged to be movable between the key insert side and the key anti-insertion side in the sleeve  7  (the first housing space  70  and the second housing space  72 ). And it is configured to move and return to the key insert side by a spring (a compression spring)  16  for the return of the key plug. 
     The first barrel  8 A has a key insert hole  81  opening on the key insert side edge face allowing the matching key to be inserted and removed, and is formed by a rectangular shape box in a substantially square shape cross section entirely. Tumbler holding holes  82 ,  82 , - - - arranged in parallel in a key insertion and extraction direction and opening in a radial direction are provided in the first barrel  8 A. A concave groove  83  being communicated with the second through-hole  76  opening on one side and a spring mounting portion  84  protruding from the groove bottom on this key insert side of the concave groove  83  are provided on the key anti-insertion side end of the first barrel  8 A. A locking piece  11 B of the second key plug locking mechanism  11  is housed in the concave groove  83  of the first barrel  8 A in the state of being installed to the spring mounting portion  84 . Furthermore, a concave hole  85  in a step-like shape, which is communicated with the first through-hole  74  of the sleeve main body  7 A, is provided on the key anti-insertion side end of the first barrel  8 A in the state of being communicated with the key insert hole  81  (inside the key plug  8 ) opening on another side thereof and the state that the tumblers  9 ,  9 , - - - are inserted into the tumbler locking holes  73 ,  73 , - - - . 
     The second barrel  8 B is connected to the first barrel  8 A and the third barrel  8 C continuously, is arranged on an axis line of the key insert hole  81  and formed by a cylinder having an outer diameter smaller than the horizontal and vertical section size (one side of the square) of the first barrel  8 A entirely. 
     The third barrel  8 C has an output portion  80  (described previously) on the key anti-insertion side and is arranged on an axis line of the second barrel  8 B. And the output portion  80  is configured to function as a pivoting spindle to pivotally support an input clutch element  40  and an output clutch element  41  of the clutch device  4  in the output state by an insertion of the matching key into the key insert hole  81 . The outer diameter of the third barrel  8 C is set to be a dimension smaller than that of the second barrel  8 B. A key plug step-like surface  86  directing to the key anti-insertion side (a clutch device side) and facing to a rim of the key insert side opening of a key plug insert hole (described later) of a spring stopper  17  is provided along a circumferential direction between the periphery surface of the third barrel  8 C and that of the second barrel  8 B. 
     The spring stopper  17  has a key plug insert hole  170  letting through the third barrel  8 C and element insert holes  171  and  172  letting through barrel elements  78  and  79  of the sleeve barrel  7 B around this key plug insert hole  170 . The spring stopper  17  is arranged on an axis line of the sleeve  7 , is housed in the state intermediating between a positioning plate  18  and springs  15  and  16  in the body  6  and is configured to function as a key plug movement restricting member which restricts a movement of the key plug  8  in a key insert direction by contacting the key plug step-like surface  86  (the key plug  8 ) with a rim of the key insert side opening of the key plug insert hole  170  and to restrict the movement of the key plug  8  at a position preceding the position where the movement of the sleeve  7  in a key insert direction is restricted. Consequently, a dimension of a key insertion and extraction direction between the spring stopper  17  and the key plug step-like surface  86  is set to be smaller than that between the key anti-insertion side edge face of the sleeve  7  and the spring stopper  17  in the state that the key plug  8  is locked by the first key plug locking mechanism  10 . As a result, when the key plug  8  moves in a key insert direction with the sleeve  7  by the insertion of the unauthorized key into the key insert hole  81 , the movement of the key plug  8  in a key insert direction is restricted by contacting the key plug step-like surface  86  with the key insert side edge face of the spring stopper  17  (a rim of the key insert side opening of the key plug insert hole  170 ) prior to the sleeve  7  and it is possible to prevent a generation of a load by a contact of the tumblers  9 ,  9 , - - - against the inner surface of the tumbler locking holes  73 ,  73 , - - - . 
     Similar to the spring stopper  17 , the positioning plate  18  has a key plug insert hole  180  letting through the third barrel  8 C of the key plug  8  and element insert holes (not shown) letting through the barrel elements  78  and  79  of the sleeve barrel  7 B around this key plug insert hole  180 , is arranged on an axis line of the sleeve  7  and fixed on the body  6 . 
     As shown in  FIG. 5A  and  FIG. 5B , the each of tumblers  9 ,  9 , - - - is arranged to be insertable and removable in the tumbler locking holes  73 ,  73 , - - - and is movable supported by the tumbler holding holes  82 ,  82 , - - - (shown in  FIG. 2 ). Furthermore, as shown in  FIG. 5A , a portion of tumblers  9  among the tumblers  9 ,  9 , - - - has a hook  9 A protruding toward a key insertion direction at a top end thereof, and are arranged with gaps G 1  and G 2  between an inner surface  73 A of the tumbler locking hole  73  and a key insertion and extraction direction in the state that the key plug  8  is locked into the sleeve  7  by a lock pin (described later) of the first key plug locking mechanism  10 . As shown  FIG. 5B , tumblers  9 ,  9 , - - - other than the tumbler  9  shown in  FIG. 5A  among the tumblers  9 ,  9 , - - - are arranged with gaps G 3  and G 4  between the inner surfaces  73 A,  73 A, - - - of the tumbler locking holes  73 ,  73 , - - - and a key insertion and extraction direction in the state that the key plug  8  is locked into the sleeve  7  by a lock pin (described later) of the first key plug locking mechanism  10 . And the tumblers  9 ,  9 , - - - are configured to be withdrawn from the tumbler locking holes  73 ,  73 , - - - by an insert operation of the matching key to the key plug  8  (the key insert hole  81 ) and to be inserted into the tumbler locking holes  73 ,  73 , - - - by a pull-out operation of the matching key from the key plug  8 . Furthermore, a resilient force of a tumbler return spring (not shown) in a direction inserted into the tumbler locking holes  73 ,  73 , - - - is imparted to the tumblers  9 ,  9 , - - - . 
     The tumbler  9  with a hook is formed by, for example, applying bending/embossing process to a tumbler material (not shown). 
     The dimensions of key insertion and extraction direction of the gap G 4  (a dimension between a key anti-insertion side surface of the tumbler and a key anti-insertion side inner surface of the tumbler locking hole) is set to be a dimension smaller than that of G 2  (a dimension between a key anti-insertion side edge face of the tumbler and a key anti-insertion side inner surface of the tumbler locking hole) (G 2 &gt;G 4 ). As a result, even if picking of the sleeve  2  (an unauthorized act to release the locking state of the tumblers  9 ,  9 , - - - into the tumbler locking holes  73 ,  73 , - - - without using a matching key) is carried out in the state that the tumblers  9 ,  9 , - - - are inserted into the tumbler locking holes  73 ,  73 , - - - while moving the key plug  8  in a key insertion direction as indicated by two-dot chain lines in  FIG. 5B , since the hook  9 A of the tumbler (a portion of the tumblers)  9  shown in  FIG. 5A  is locked into the engaging portion  73 B of the tumbler locking hole  73  as shown in  FIG. 6A , it is necessary to move and return the key plug  8  in an opposite direction of the key insertion direction as shown in  FIG. 6B  for releasing this locking state (for withdrawing the tumbler  9  with a hook from the tumbler locking hole  73 .) As a result, when the locking state is released by moving the key plug  8  in the opposite direction of the key insertion direction in the locking state of the hook  9 A to the engaging portion  73 B, the tumblers (tumblers without hook)  9 ,  9 , - - - in which the engagement has been released as indicated by two-dot chain lines in  FIG. 5B  are inserted into the tumbler locking holes  73 ,  73 , - - - as indicated by continuous lines in  FIG. 5B  by moving and returning with the key plug  8  in the key anti-insertion direction, and the picking of the cylinder  2  becomes difficult. 
     As shown in  FIG. 2  and  FIG. 7 , the first key plug locking mechanism  10  has a cam pin  10 A moving in the key plug  8  by an insertion and extraction of the matching key to the key insert hole  81 , a lock pin  10 B locking and releasing the key plug  8  by a movement of this cam pin  10 A and a spring  10 C for pressing a pin to impart a resilient force of a direction to lock the key plug  8  into the sleeve  7  to this lock pin  10 B (a lock pin  10 B and a cam pin  10 A in the locking state of the key plug  8  by the first key plug locking mechanism  10 ), and is arranged between the sleeve  7  and the key plug  8 . And, as mentioned-above, it is configured to lock the key plug  8  into the sleeve  7  in the state that the tumblers  9 ,  9 , - - - are inserted into the tumbler locking holes  73 ,  73 , - - - . 
     The cam pin  10 A comprises a basal portion  101  in a substantially rectangular shape having an edge face  101 A facing to a step-like surface  85 A of the concave hole  85  and a cam portion  102  having a cam face  102 A continuously connected to this basal portion  101 , and is movably housed in the concave hole  85  and the key insert hole  81 . And it is configured to press the lock pin  10 B withdrawing in a direction to separate from the axis line of the key insert hole  81  by an insert operation of the matching key into the key insert hole  81  and also to proceed in a direction to approach the axis line of the key insert hole  81  by a pull-out operation of the matching key from the key insert hole  81 . 
     The lock pin  10 B comprises a substantially cylindrical body having a pressing surface  103  facing to an edge face  101 B of the cam pin  10 A (basal portion  101 ) and is arranged to be movable between the key plug  8  and the sleeve  7 . And it is configured to be embedded in the first through-hole  74  of the sleeve  7  in the state that the tumblers  9 ,  9 , - - - are withdrawn from the tumbler locking hole  73 ,  73 , - - - and to press the pressing surface  103  against the edge face  101 B of the cam pin  10 A by exposing a portion thereof in the concave hole  85  of the key plug  8  in the state that the tumblers  9 ,  9 , - - - are inserted into the tumbler locking hole  73 ,  73 , - - - . 
     The spring  10 C for pressing a pin is arranged in the first through-hole  74  of the sleeve  7  and resiliently mounted between the lock pin  10 B and the cover  75 . And it is configured that the lock pin  10 B is pressed and connected to the periphery surface of the key plug  8  in the state that the key plug  8  is moved in a key insert direction by releasing the locking state of the key plug  8  into the sleeve  7  (the state that the tumblers  9 ,  9 , - - - are inserted into the tumbler locking hole  73 ,  73 , - - - ), and the cam pin  10 A is pressed and connected to the step-like surface  85 A of the concave hole  85  via the lock pin  10 B in the state that the key plug  8  is locked into the sleeve  7  by the first key plug locking mechanism  10  (the state that the tumblers  9 ,  9 , - - - are inserted into the tumbler locking hole  73 ,  73 , - - - ), respectively. 
     As shown in  FIG. 2  and  FIG. 8 , the second key plug locking mechanism  11  has a lever  11 A for pressing a locking piece which pivots by a handle operation (pivotal operation) force of the operating handle  3  and an elastic return force of a spring  11 C (described later) by the proceeding of the key plug  8 , the locking piece  11 B locking the key plug  8  into the sleeve  7  by an elastic deformation by pressure of the this lever  11 A and the spring  11 C for transmitting a locking force to impart a resilient force in a direction to maintain a locking state of the key plug  8  by this locking piece  11 B to the lever  11 A, and is arranged between the operating handle  3  and the key plug  8 . And, as mentioned-above, it is configured to lock the key plug  8  into the sleeve  7  in the output state of the output portion  80  by an insertion of the matching key into the key plug  8  (the key insert hole  81 ). Furthermore, the second key plug locking mechanism  11  is configured to release the locking state of the key plug  8  to the sleeve  7  when receiving the handle operation force of the operating handle  3  in a direction that the lever  11 A opens a door panel in the output state of the output portion  80 . 
     The lever  11 A for pressing a locking piece comprises an operation force receiving portion  110  for receiving a handle operation force of the operating handle  3  and a press portion  111  elastically deforming the locking piece  11 B (a spring deformed portion  113 ) by pressing, is supported to the body  6  via a pin  112  and arranged to be movable on one side of the spring receiving portion  77  in the penetrating window  62  of the body  6 , the second through-hole  76  and the first housing space  70  of the sleeve  7  by exposing a portion thereof to outside of the body. 
     The locking piece  11 B comprises a plate spring having the spring deformed portion  113  which becomes a locking portion by an elastic deformation by pressure of the lever  11 A on an end of one side, and is housed in the concave groove  83  of the key plug  8  in the state that an end of another side is installed to a spring mounting portion  84  by a spring holding member  19 . And it is configured that the spring deformed portion  113  presses and connects the second receiving surface  77 B of the spring receiving portion  77  by elastically deforming into the locking portion in the output state (the state indicated by two-dot chain lines in  FIG. 8 ) of the key plug  8  (the output portion  80 ) by an insertion of the matching key into the key insert hole  81 , and to lock the key plug  8  into the sleeve  7 . Furthermore, it is configured that the spring deformed portion  113  presses and connects to the first receiving surface  77 A of the spring receiving portion  77  as an unlocking portion in the state that the tumblers  9 ,  9 , - - - are inserted into the tumbler locking hole  73 ,  73 , - - - (the state indicated by continuous lines in  FIG. 8 ) and the locking state of the key plug  8  to the sleeve  7  is released. 
     The spring  11 C for transmitting a locking force is arranged around the pin  112  in which both spring ends are locked into the body  6  and the lever  11 A respectively, and the entirety is formed by a double torsion spring. 
     (Structure of the Operating Handle  3 ) 
     As shown in  FIG. 1  to  FIG. 4 , the operating handle  3  has a first press portion  30  to impart a pivotal operation force (a handle operation force) of a direction to release a door locking mechanism (a direction to open a door panel) to the transmitting lever  5 A of the handle operation force transmission mechanism  5  and a second press portion  31  to impart a handle operation force thereof to the lever  11 A of the second key plug locking mechanism  11 , is movably supported to the frame  200  and return characteristics are imparted by a spring (a torsion spring)  20  for returning the transmission lever. And it is configured to pivot with a pin  32  as a turning center within a predetermined pivot range and to generate an unlocking movement (an opening movement to open the door panel) to unlock the door locking mechanism. As a result, when the operating handle  3  is operated pivotally in a door panel opening direction in the output state of the key plug  8  (the output portion  80 ) by an insertion of the matching key into the key insert hole  81 , this operation force is transmitted to the clutch device  4  (an input clutch element  4 A and an output clutch element  4 B) via the handle operation force transmission mechanism  5 , further transmitted to the door locking mechanism (door latch mechanism) from this clutch device  4  via a wire  14 , and this door locking mechanism is unlocked. Furthermore, when the operation state of the operating handle  3  is released, the operating handle  3  returns pivotally by the spring  20  for returning the transmission lever via the handle operation force transmission mechanism  5  and is arranged in a return position (the position before operating the operating handle  3 ). 
     When the operating handle  3  is operated pivotally in an opening direction of the door panel in the unlocking state of the door locking mechanism, since the door locking mechanism is unlocked, the door panel is opened pivoting in an opening direction around a pivot bearing. Furthermore, when the door panel is blocked in the closing direction by operating pivotally in the open state, the door lock mechanism is locked. 
     (Structure of the Clutch Device  4 ) 
     As shown in  FIG. 1  to  FIG. 4 , the clutch device  4  has a clutch  4 A to switch on and off between the operating handle  3  (the handle operation force transmission mechanism  5 ) and the door locking mechanism (not shown) and a connecting pin  4 B movably connecting the input clutch element (an input lever)  40  and the output clutch element (an output lever)  41  of this clutch  4 A, and is housed in the housing space  120  of the case  12 . And it is configured to receive an unlocking movement of the operating handle  3  from the handle operation force transmission mechanism  5  and to transmit it to the door locking mechanism in the output state of the cylinder lock  2 . 
     The clutch  4 A has a an input clutch element  40  actuated by receiving a handle operation force of the operating handle  3  from the handle operation force transmission mechanism  5  and an output clutch element  41  to output an actuating force received from the input clutch element  40  as an unlocking movement of the operating handle  3  in the output state of the cylinder lock  2 , and is arranged on the axis line of the key plug  8 . 
     The input clutch element  40  comprises a main frame  42  in a flat D-shape having a notch  42 A letting through the third barrel  8 C of the key plug  8  and a through-hole  42 B for connecting a clutch engaging with the connecting pin  4 B and an arm portion  43  having a through-hole  43 A for connecting a link engaging with a transmitting link  5 B (a pin  50 ) of the handle operation force transmission mechanism  5 , is movably connected to the transmitting link  5 B via the pin  50  and arranged on the axis line of the key plug  8 . And it is configured to transmit the pivoting force (a handle operation force) to the door locking mechanism by pivoting with the output clutch element  41  from a position “a” indicated by broken lines in  FIG. 3  to a position “b” indicated by two-dot chain lines in  FIG. 3  (a position displaced at 105° from the position “a” turning around the key plug  8 ) when receiving an unlocking movement of the operating handle  3  in the output state of the cylinder lock  2  by an insertion of the matching key (the state that the input clutch element  40  and the output clutch element  41  are movably supported on the output portion  80  of the key plug  8  and the handle operation force transmission mechanism  5  is connected to the door locking mechanism). Furthermore, it is configured not to transmit an oscillating force (a handle operation force) to the door locking mechanism by oscillating from the position “a” indicated by broken lines in  FIG. 3  to a position “c” indicated by two-dot chain lines in  FIG. 3  when receiving the operation force of the operating handle  3  in the non-output state of the cylinder lock  2  (the state that the input clutch element  40  and the output clutch element  41  are not supported on the output portion  80  of the key plug  8  and the connection between the handle operation force transmission mechanism  5  and the door locking mechanism is blocked). 
     The output clutch element  41  comprises a circular disc having a through-hole  41 B for a stopper key plug insertion opening in a moving direction of the key plug  8  and is movably connected to the input clutch element  40  via the connecting pin  4 B and to the door locking mechanism (latch mechanism) via the wire  14 , respectively. And it is configured to output the actuating force (pivoting force) received from the input clutch element  40  as an unlocking movement of the operating handle  3  to the wire  14  in the output state of the cylinder lock  2  by an insertion of the matching key and to unlock the door locking mechanism by transmitting this output from the wire  14  to the door locking mechanism. Furthermore, the output clutch element  41  is arranged on the axis line of the key plug  8  and movably supported around a clutch stopper  44  (a supporting portion  440 ). And return characteristics are imparted to the door locking mechanism side via the wire  14 . 
     The through-hole  41 B of the output clutch element  41  is formed by a step-like hole comprising a round hole  410  opening on the key insert side allowing the third barrel  8 C of the key plug  8  to be inserted and a D-shaped hole  411  opening on the key anti-insertion side being communicated with this round hole  410 . 
     The clutch stopper  44  comprises a supporting portion  440  in a cylindrical shape rotatably supporting the output clutch element  41  inserting into the round hole  410  and a basal portion  441  in a D-shape cross section insertable into the D-shaped hole  411 , is supported movably on the housing space  122 A of the rising wall  122  (impossible to rotate around the axis line of the output clutch element  41 ) and arranged on the axis line of the output clutch element  41 . And it is configured to movably support the output clutch element  41  with the output portion  80  of the key plug  8  at the supporting portion  440  withdrawing the basal portion  441  from the D-shaped hole  411  to the key anti-insertion side in the output state of the cylinder lock  2  (the output portion  80 ) by an insertion of the matching key and to fix the output clutch element  41  in a rotation direction at the basal portion  441  proceeding the basal portion  441  into the D-shaped hole  411  in the non-output state of the cylinder lock  2 . Furthermore, a resilient force of a spring (a compression spring)  45  for pressing a stopper is imparted to the clutch stopper  44  on the key insert side. 
     The connecting pin  4 B is provided integrally in a protruding condition at the rim of key insert side outer periphery in the output clutch element  41 . And it is configured to function as a pin for a clutch element transmission to transmit a handle operation force of the operating handle  3  from the input clutch element  40  to the output clutch element  41  in the output state of the key plug  8  (the output portion  80 ) by an insertion of the matching key to the key insert hole  81 . 
     (Structure of the Handle Operation Force Transmission Mechanism  5 ) 
     As shown in  FIG. 1  to  FIG. 4 , the handle operation force transmission mechanism  5  has a transmitting lever  5 A pivoting by receiving a handle operation force (a pivotal operation force) of the operating handle  3  and a transmitting link  5 B hoisting by receiving the pivoting force from this transmitting lever  5 A, and is supported on the frame  200  intermediating between the operating handle  3  and the clutch device  4 . And it is configured to transmit the handle operation force (the pivoting force) of the operating handle  3  to the clutch device  4  as mentioned above. 
     The transmitting lever  5 A comprises a pivot lever in a substantially L-shape having a pin hole  52  for connecting a link fitting in a pin  51  of the transmitting link  5 B, is arranged between the rising portions  200 A and  200 B and movably supported around the pin  201 . And the return characteristic is imparted by the spring  20  for return of the transmitting lever. A pin hole  53  letting through the pin  201  is provided on the transmitting lever  5 A. 
     The transmitting link  5 B comprises pin junctions  54 A and  54 B protruding in a direction to be orthogonal each other in the pivot plane of the operating handle  3  and the pins  50  and  51  (the pin  51  is described previously) with a ball joint connecting the pin junctions  54 A and  54 B of this link body  54  and is arranged between the transmitting lever  5 A (the pin hole  52 ) and the input clutch element  40 A (the through-hole  43 A). And, similar to the transmitting lever  5 A, it is configured that the return characteristics are imparted by the spring  20  for return of the transmitting lever so as to function as a link for three-dimensional actuation. 
     (Motion of the Unlocking Device  1 ) 
       FIG. 9A  and  FIG. 9B  are views showing a standby state of the unlocking device in the preferred embodiment according to the present invention.  FIG. 10A  and  FIG. 10B  are views shown for explaining the operation when a matching key is inserted into a cylinder lock of the unlocking device in the preferred embodiment according to the present invention.  FIG. 11A  and  FIG. 11B  are views shown for explaining the operation when the operating handle of the unlocking device is operated in the preferred embodiment according to the present invention.  FIG. 12A  and  FIG. 12B  are views shown for explaining the operation when an unauthorized key is inserted into the cylinder lock of the unlocking device in the preferred embodiment according to the present invention.  FIG. 13A  and  FIG. 13B  are views shown for explaining the operation when the operating handle is operated in the standby state of the unlocking device in the preferred embodiment according to the present invention. In  FIG. 9  to  FIG. 13 , A shows a cross sectional view and B shows a rear view, respectively. 
     In the locking state of the door locking mechanism, as shown in  FIG. 9A  and  FIG. 9B , since the key plug  8  is arranged with the sleeve  7  on the key insert side of the body  6  (a housing space  60 ), the matching key is inserted into the key insert hole  81  of the key plug  8  so as to switch the door locking mechanism from a locking state to an unlocking state. In this case, when the matching key is inserted into the key insert hole  81  of the key plug  8 , key fitting holes (not shown) of the tumblers  9 ,  9 , - - - are engaged with corresponding convexes and concaves of the matching key respectively, and the tumblers  9 ,  9 , - - - are withdrawn from the tumbler locking hole  73 ,  73 , - - - of the sleeve  7  moving in the tumbler holding holes  82 ,  82 , - - - of the key plug  8 . In this case, since the tumblers  9 ,  9 , - - - are arranged with the gaps between an inner surface  73 A of the tumbler locking holes  73 ,  73 , - - - and a key insertion and extraction direction, it is possible to conduct a withdrawal movement of the tumblers  9 ,  9 , - - - smoothly without interfering with the inner surface of the tumbler locking holes  73 ,  73 , - - - when withdrawing the tumblers. 
     Furthermore, since the cam pin  10 A (a cam face  102 A) of the first key plug locking mechanism  10  is pressed in a key insertion direction by an end portion of the matching key inserted into the key insert hole  81 , the cam pin  10 A presses the lock pin  10 B by withdrawing in a direction to separate from the axis line of the key insert hole  81 . As a result, the lock pin  10 B is embedded in the first through-hole  74  of the sleeve  7  and the locking state of the key plug  8  to the sleeve  7  by the lock pin  10 B is released. 
     When the matching key is further inserted in a key insert direction in this state as shown in  FIG. 10A  and  FIG. 10B , the key plug  8  proceeds from the key insert side to the key anti-insert side with respect to the sleeve  7 . Consequently, the output portion  80  of the key plug  8  passes through the notch  42 A of the input clutch element  40  and is also inserted into the round hole  410  of the output clutch element  41  (the main frame  42 ), and rotatably supports the input clutch element  40  and the output clutch element  41 . In this case, a proceeding force of the key plug  8  is transmitted to a clutch stopper  43 , the clutch stopper  44  moves to the key anti-insertion side against the resilient force of the spring  45  and the basal portion  441  is withdrawn from the D-shaped hole  411  of the output clutch element  41 . As a result, the input clutch element  40  and the output clutch element  41  are allowed to pivot on the output portion  80  of the key plug  8 . 
     Furthermore, since the locking piece  11 B of the second key plug locking mechanism  11  (the spring deformed portion  113 ) is deformed into the locking portion by the proceeding of the key plug  8  in a key insert direction receiving a compressive force (a resilient force of the spring  11 C) from the lever  11 A (the press portion  111 ) of the second key plug locking mechanism  11  after releasing the pressed and connected state against the first receiving surface  77 A of the spring receiving portion  77  and being elastically returned in the concave groove  83  of the key plug  8 , the second through-hole  76 , the first housing space  70  and penetrating window  62  of the body  6 , this elastically deformed spring deformed portion  113  (the locking portion) presses the second receiving surface  77 B of the spring receiving portion  77  and the key plug  8  is locked into the sleeve  7 . As a result, it is possible to detect the output status (a connecting state of the operating handle  3  and the door locking mechanism) of the key plug  8  (the output portion  80 ), and possible to stop the key insert operation while maintaining the state that the key plug  8  is locked into the sleeve  7 . 
     Next, the pivotal (handle) operation of the operating handle  3  is conducted in a direction to unlock the door locking mechanism (a direction to open the door panel). In this case, when the pivotal operation of the operating handle  3  is conducted as shown in  FIG. 11A , this pivotal operation force is transmitted from the first press portion  30  to the input clutch element  40  via the handle operation force transmission mechanism  5  (the transmitting lever  5 A and the transmitting link  5 B) and the input clutch element  40  pivots with the output clutch element  41  from position “a” indicated by broken lines in  FIG. 8B  to a position “b” indicated by broken lines in  FIG. 11B  (a position displaced at 105° from the position “a” turning around the key plug  8 ) and its pivoting force (a handle operation force) is transmitted to the door locking mechanism as an unlocking force via the wire  14 . As a result, the door locking mechanism is released by receiving the unlocking force from the wire  14 . 
     After this, when the pivotal operation of the operating handle  3  is conducted in a opening direction of the door panel in the unlocking state of the door locking mechanism, since the door locking mechanism is unlocked, the door panel is opened pivoting in an opening direction around the pivot bearing (the pin  32 ). Furthermore, when the lever  11 A of the second key plug locking mechanism  11  receives the operation force of the operating handle  3  from the second press portion  31  via the operation force receiving portion  110  in the unlocking state of the door locking mechanism, since the lever  11 A releases the locking state of the key plug  8  against the sleeve  7  by pivoting in a direction to release (from a locking portion to an unlocking portion) the pressure against the spring deformed portion  113  of the locking piece  11 B, the key plug  8  moves and returns (withdraws) with the matching key by a resilient force of the spring  16  and is arranged on the key insert side (an initial position) in the sleeve  7 . 
     Here, in the locking state of the door locking mechanism, for example, when an unauthorized key is inserted into the key insert hole  81  of the key plug  8 , the key plug  8  moves with the sleeve  7  form the key insert side to the key anti-insertion side with respect to the body  6  as shown in  FIG. 12A . In this case, since the sleeve  7  moves the input clutch element  40  and the output clutch element  41  by pressing in the key insertion direction, the input clutch element  40  and the output clutch element  41  are not supported on the output portion  80  of the key plug  8 . When the input clutch element  40  receives the operation force of the operating handle  3  in a direction to unlock the door locking mechanism in this state, the input clutch element  40  does not transmit an oscillating force (a handle operation force) to the door locking mechanism by oscillating from the position “a” indicated by broken lines in  FIG. 12B  to a position “c” indicated by two-dot chain lines in  FIG. 12B , as a result, the door locking mechanism is not unlocked. 
     Furthermore, when the key plug  8  moves in the key insertion direction with the sleeve  7  by an insertion of the unauthorized key into the key insert hole  81 , the movement of the key plug  8  in a key insertion direction is restricted by contacting the key plug step-like surface  86  with the key insert side edge face of the spring stopper  17  prior to the sleeve  7 , and it is possible to prevent a fracture generation of the tumblers  9 ,  9 , - - - and the sleeve  7  avoiding the load due to the contact of the tumblers  9 ,  9 , - - - received by the inner surface of the tumbler locking hole  73 ,  73 , - - - . 
     In the locking state of the door locking mechanism, in case that the pivotal (handle) operation of the operating handle  3  is conducted in a direction to open the door panel, since the input clutch element  40  and the output clutch element  41  are not supported on the output portion  80  of the key plug  8  as shown in  FIG. 13A , if the input clutch element  40  receives the operation force of the operating handle  3  from the handle operation force transmission mechanism  5  (the transmitting link  5 B) in this state, the input clutch element  40  does not transmit an oscillating force (a handle operation force) to the door locking mechanism (the output clutch element  41 ) by oscillating as shown in  FIG. 13B , as a result, the door locking mechanism is not unlocked. 
     Effect of the Preferred Embodiment 
     According to the preferred embodiment described above, following effects can be obtained. 
     (1) Since a rod for a cylinder lock and a key lever mechanism which are conventionally required are not necessary, it is possible to reduce the number of parts assembled and possible to seek the simplification of the entire structure and the cost reduction. 
     (2) Since a rod for a cylinder lock and a key lever mechanism are not intermediated between the cylinder lock  2  and the clutch device  4 , it is possible to lessen the outside dimension and possible to seek the miniaturization of the entire structure. 
     (3) Since the tumblers  9 ,  9 , - - - are arranged with gaps between the inner surface  73 A of the tumbler locking holes  73 ,  73 , - - - and the key insertion and extraction direction in the state that the key plug  8  is locked into the sleeve  7  by the first key plug locking mechanism  10 , it is possible to conduct a withdrawal movement (an insert operation of the matching key) of the tumblers  9 ,  9 , - - - smoothly without interfering with the inner surface  73 A of the tumbler locking holes  73 ,  73 , - - - when withdrawing the tumblers. 
     (4) Since the movement of the key plug  8  in a key insertion direction is restricted by contacting the key plug step-like surface  86  with the key insert side edge face of the spring stopper  17  prior to the sleeve  7  at the time of insertion of the unauthorized key into the key insert hole  81 , it is possible to avoid the load due to the contact of the tumblers  9 ,  9 , - - - received by the inner surface of the tumbler locking hole  73 ,  73 , - - - and possible to prevent a fracture generation of the tumblers  9 ,  9 , - - - and the sleeve  7 . 
     (5) Since the locking piece  11 B of the second key plug locking mechanism  11  is elastically deformed into the locking portion by the proceeding of the key plug  8  in a key insertion direction receiving a compressive force from the lever  11 A, this elastically deformed locking piece  11 B (the spring deformed portion  113 ) presses the second receiving surface  77 B of the spring receiving portion  77  and the key plug  8  is locked into the sleeve  7 . As a result, it is possible to detect the output status (a connecting state of the operating handle  3  and the door locking mechanism) of the key plug  8  and possible to stop the key insert operation while maintaining the state that the key plug  8  is locked into the sleeve  7 . 
     (6) Even if picking of the tumblers (tumblers without hook)  9 ,  9 , - - - is carried out moving the key plug  8  in a key insertion direction, since the hook  9 A of the tumbler  9  (a portion of the tumblers) is locked into the engaging portion  73 B of the tumbler locking hole  73 , it is necessary to move and return the key plug  8  in an opposite direction of the key insertion direction for releasing this locking state. As a result, when the locking state is released by moving the key plug  8  in the opposite direction of the key insertion direction in the locking state of the hook  9 A to the engaging portion  73 B, the tumblers (tumblers without hook)  9 ,  9 , - - - in which the engagement has been released are inserted into the tumbler locking holes  73 ,  73 , - - - by moving and returning with the key plug  8  in the key anti-insertion direction, and the picking of the cylinder  2  becomes difficult. 
     Although the unlocking device according to the present invention has been described based on the above preferred embodiment, the invention is not limited by the above preferred embodiment and it is possible to implement in various features without going beyond a scope of the concept. For example, following variation can be made. 
     (1) In this preferred embodiment, although it is explained the structure in which the input clutch element  40  and the output clutch element  41  are arranged on the key insert side on the key plug axis line and the key anti-insert side respectively, the present invention is not limited thereto. Hence, it may be the structure in which the output clutch element and the input clutch element are arranged on the key insert side on the key plug axis line and the key anti-insert side, respectively. 
     (2) In this preferred embodiment, although it is explained that the tumbler  9  with a hook is formed by applying bending/embossing process to a tumbler material, the present invention is not limited thereto. Hence, the tumbler  9  may be formed by other methods such as, for example, punching process as shown in  FIG. 14A  and  FIG. 14B . In this case, a hook  9 A in an inverted L-shape is provided at a top end of a portion of the tumbler  9 , and an engaging portion  73 B in a rectangular shape cross section engaging with the hook  9 A is provided on the inner surface  73 A of the tumbler locking hole  73  in the state that the tumblers  9 ,  9 , - - - are inserted into the tumbler locking holes  73 ,  73 , - - - . As a result, even if the picking of the cylinder  2  is carried out moving the key plug  8  in a key insertion direction in the state that the tumblers  9 ,  9 , - - - are inserted into the tumbler locking holes  73 ,  73 , - - - , since the hook  9 A of the tumbler (a portion of tumblers)  9  shown in  FIG. 14A  is firmly engaged with the engaging portion  73 B of the tumbler locking hole  73  as shown in  FIG. 14B , the picking of the cylinder  2  becomes more difficult. 
     (3) In this preferred embodiment, although it is the structure in which the joint of the cylinder lock  2  and the clutch device  4  is covered, the present invention is not limited thereto, hence, the joint may be covered by an armoring member. In this case, it is possible to prevent the intermittence of the clutch device  4  due to the external unauthorized act, hence, possible to prevent the occurrence of the vehicle theft. 
     (4) In this preferred embodiment, although it is explained that the unlocking of the door locking mechanism for the vehicle door panel is conducted, the present invention is not limited thereto. Hence, it may be the unlocking of the door locking mechanism for other door panels. 
     Although the invention has been described with respect to the specific embodiments for complete and clear disclosure, the appended claims are not to be therefore limited but are to be construed as embodying all modifications and alternative constructions that may occur to one skilled in the art which fairly fall within the basic teaching herein set forth.