PATENT DOCUMENT

Abstract:
The present invention provides a geared motor in which a motor lead can be routed within a case to a position set apart from a motor, and a damper device. In the geared motor that is used in the damper device, the case is provided with a motor lead passage that extends in the Y-direction through a position flanked, in the Z-direction, by a side plate part of a case trunk part and the rotation axis of a driving gear that is included in a gear train. It is therefore possible, with the Z-direction positions of a plurality of motor leads being defined, to extend the motor leads in the Y-direction. The Z-direction dimension of the geared motor can then be reduced because the motor leads will then partially overlap the drive gear in the motor lead passage as viewed from the X-direction.

Full Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to a geared motor including a gear train and the like inside of a case, a manufacturing method for the geared motor, and a damper device used in a cold air passage of a refrigerator or the like. 
         [0003]    2. Description of Related Art 
         [0004]    In a damper device which is used in a cold air passage of a refrigerator or the like, for example, a structure has been proposed that a baffle is driven by a baffle drive mechanism including a motor and a gear train to open and close an opening part formed in a frame (Patent Literature 1). In the damper device, the baffle drive mechanism is accommodated in a case to structure a geared motor. In the geared motor and the damper device, motor lead wires are arranged within the case and, in Patent Literature 1, the motor lead wires are connected with a connector near the motor. 
       CITATION LIST 
     Patent Literature 
       [0005]    [Patent Literature 1] Japanese Patent Laid-Open No. 2010-159902 
       SUMMARY OF THE INVENTION 
       [0006]    However, in the structure described in Patent Literature 1, a power feeding position to the motor is limited and thus it is inconvenient to use. On the other hand, when a connector is disposed at a position separated from the motor, the motor lead wires may be contacted with the gear train. 
         [0007]    In view of the problem described above, an objective of the present invention is to provide a geared motor and a damper device capable of leading around motor lead wires to a position separated from a motor inside the case. 
       Means to Solve the Problems 
       [0008]    To solve the above mentioned problem, the present invention provides a geared motor, wherein directions perpendicular to each other are referred to as an “X” direction and a “Y” direction, and a direction perpendicular to the “X” direction and the “Y” direction is referred to as a “Z” direction, the geared motor including a case, which is a bottomed case including a case body part which opens toward one side in the “X” direction and a bottom plate part located on the other side in the “X”, direction with respect to the case body part, a cover which covers an opening of the case body part of the case on the one side in the “X” direction, a motor which is disposed inside the case, a plurality of motor lead wires having flexibility which are connected with the motor, and a gear train disposed on one side in the “Y” direction with respect to the motor in the case in a manner that turning center axial lines of the gear train are directed in the “X” direction. The case includes a motor lead wire passage whose depth direction is the “X” direction and which is extended in the “Y” direction so as to pass a position interposed in the “Z” direction between the turning center axial lines of a gear included in the gear train and the case body part, and the plurality of the motor lead wires are extended from the other side to the one side in the “Y” direction through the motor lead wire passage in a state that at least parts of the plurality of the motor lead wires are bent in the motor lead wire passage from a connecting position of the motor lead wires and the motor so as to be located on a side of the bottom plate part. 
         [0009]    In the present invention, the case is provided with a motor lead wire passage which is extended in the “Y” direction so as to pass a position interposed in the “Z” direction between the turning center axial lines of the gears included in the gear train and the case body part. Therefore, a plurality of the motor lead wires can be extended in the “Y” direction in a state that the positions in the “Z” direction of the motor lead wires are restricted. Further, the plurality of the motor lead wires is extended in the “Y” direction through the motor lead wire passage in a state that at least parts of the motor lead wires are bent to a side of the bottom plate part from the connecting positions in the motor lead wire passage. Therefore, the motor lead wires can be led around to a position separated in the “Y” direction from the motor in a state that the motor lead wires and the gear train are not contacted with each other. Accordingly, flexibility for a power feeding position to the motor can be enhanced. 
         [0010]    In the present invention, it may be structured that the motor lead wire passage is formed in a slit shape which opens toward the one side in the “X” direction. According to this structure, the motor lead wires can be fitted to the motor lead wire passage from the one side in the “X” direction. 
         [0011]    In the present invention, it is preferable that parts of the plurality of the motor lead wires are overlapped with the gears on the other side in the “X” direction in the motor lead wire passage when viewed in the “X” direction. According to this structure, a dimension in the “Z” direction of the geared motor can be reduced. 
         [0012]    In this case, it is preferable that the motor lead wire passage is structured by the bottom plate part on the other side in the “X” direction. According to this structure, parts of the motor lead wires can be bent to a position contacted with the bottom plate part or to a position close to the bottom plate part. Therefore, when viewed in the “X” direction, even in a case that a plurality of the motor lead wires and the gears are overlapped with each other, the motor lead wires and the gears are hard to be contacted with each other. 
         [0013]    In the present invention, it is preferable that the motor lead wire is provided with a first portion which is extended from the connecting position, a second portion which is bent from an end part of the first portion to the other side in the “X” direction and is extended in the motor lead wire passage, a third portion which is bent from an end part on the other side in the “X” direction of the second portion to the one side in the “Y” direction and is extended in the motor lead wire passage, a fourth portion which is bent from an end part on the one side in the “Y” direction of the third portion to the one side in the “X” direction and is extended in the motor lead wire passage, and a fifth portion which is extended from an end part on the one side in the “X” direction of the fourth portion, and at least a part of the third portion is overlapped with the gears on the other side in the “X” direction when viewed in the “X” direction. According to this structure, when viewed in the “X” direction, even in a case that a plurality of the motor lead wires and the gears are overlapped with each other, the motor lead wires and the gears are hard to be contacted with each other. 
         [0014]    In this case, it is preferable that the fifth portion is extended in the “Z” direction and held by the case. According to this structure, even if the fifth portion is pulled, the third portion is hard to be floated to the one side in the “X” direction. Therefore, when viewed in the “X” direction, even in a case that a plurality of the motor lead wires and the gears are overlapped with each other, the motor lead wires and the gears are hard to be contacted with each other. 
         [0015]    In the present invention, it is preferable that the cover is provided with a cover side projection at a position displaced from the gears in the “Y” direction so as to protrude toward the other side in the “X” direction to prevent displacement of the third portion to the one side in the “X” direction. According to this structure, displacement to the one side in the “X” direction of the third portion can be prevented and thus, when viewed in the “X” direction, even in a case that the third portion and a gears are overlapped with each other, the motor lead wires and the gears are hard to be contacted with each other. 
         [0016]    In the present invention, it is preferable that the plurality of the motor lead wires is juxtaposed in the “X” direction and extended in the “Y” direction in the motor lead wire passage. According to this structure, a region occupied by the plurality of the motor lead wires is narrow in the “Z” direction and thus even when the plurality of the motor lead wires are disposed at a position near the turning center axial lines of the gears, the motor lead wires and the gears are hard to be contacted with each other. 
         [0017]    In the present invention, it is preferable that the case is provided with a lead wire receiving part which is obliquely inclined from the “X” direction to the “Z” direction in the motor lead wire passage, and the third portions of the plurality of the motor lead wires are juxtaposed in the “X” direction in an obliquely inclined state in the “Z” direction along the lead wire receiving part. According to this structure, a region occupied in the “X” direction by the plurality of the motor lead wires is narrow and thus, even when the third portions and the gears are overlapped with each other when viewed in the “X” direction, the motor lead wires and the gears are hard to be contacted with each other. 
         [0018]    In the present invention, it is preferable that the plurality of the motor lead wires are formed in a flat cable in which the plurality of the motor lead wires are connected with each other in a juxtaposed state in the “X” direction in the motor lead wire passage. According to this structure, a plurality of the motor lead wires is easily accommodated in the motor lead wire passage. 
         [0019]    In the present invention, it is preferable that lengths of part or all of the plurality of the motor lead wires are different from each other, the motor includes a plurality of terminals whose distances from an outlet of the motor lead wire passage are different from each other, and part or all of the plurality of the terminals are connected with the motor lead wires having shorter lengths as located nearer to the outlet of the motor lead wire passage. According to this structure, the terminal farther from the outlet of the motor lead wire passage is connected with a motor lead wire having a longer length. Therefore, a motor lead wire having a needlessly long length is prevented from being connected with a terminal which is near to the outlet of the motor lead wire passage and thus slack of the lead wire does not become excessively large. Further, a shorter motor lead wire can be avoided from being connected with a terminal which is far from the outlet of the motor lead wire passage and thus the motor lead wire is avoided from being pulled. Therefore, the motor lead wires can be easily led around from the motor lead wire passage to the terminals. 
         [0020]    In the present invention, it is preferable that, in the motor lead wire passage, the plurality of the motor lead wires is located in the motor lead wire passage closer to the one side in the “X” direction as the terminal connected with the motor lead wire is nearer to the outlet of the motor lead wire passage. According to this structure, the nearer to the outlet of the motor lead wire passage a terminal is, a motor lead wire overlapped on an upper side in the motor lead wire passage is connected with the nearer terminal. Therefore, a plurality of the motor lead wires can be led around orderly. 
         [0021]    The present invention is effectively applied to a case that the case body part is formed in a rectangular shape whose long side is extended in the “Y” direction when viewed in the “X” direction. 
         [0022]    In the present invention, it is preferable that the motor is held by the case and the gear train is turnably supported by the bottom plate part of the case. According to this structure, it is sufficient to fit the cover after the motor and the gear train are assembled in the case and thus assembling work is easily performed. 
         [0023]    The present invention provides a manufacturing method for the above-mentioned geared motor including a bending tendency giving process in which the plurality of the motor lead wires are given with a bending tendency in a bent shape, and a assembling process in which the plurality of the motor lead wires which have been given with the bending tendency is assembled in the case. According to this structure, when the motor lead wires are to be assembled in the case, bending work is not required to perform at the spot. Therefore, work for assembling the motor lead wires is easily performed and a working hour can be shortened. 
         [0024]    The geared motor to which the present invention is applied can be used in a damper device. The damper device includes a frame which is provided on the one side in the “X” direction with respect to the case and is formed with an opening part opening in the “Z” direction, and a baffle configured to open and close the opening part, and the baffle is driven by the geared motor. 
         [0025]    In the present invention, it is preferable that the cover is integrally structured with the frame. According to this structure, in comparison with a case that the cover and the frame are separately structured from each other, assembling efficiency is improved and the number of components can be reduced. 
         [0026]    In the present invention, it is preferable that the damper device includes a heater which is fixed to the frame around the opening part and a heater lead wire having flexibility which is electrically connected with the heater. The heater lead wire is extended to the other side in the “X” direction of the cover through a heater lead wire passage formed in the cover and is led out from the case to an outer side together with the plurality of the motor lead wires, and at least one of the cover and the case is provided with a lead wire support part which supports a midway portion of the heater lead wire from an outer side. According to this structure, the heater lead wire is held at the time of assembling of the damper device. Therefore, troublesome labor is not required for fixing the heater lead wire. 
         [0027]    In this case, it is preferable that the cover is provided with a cover side lead wire support part as the lead wire support part which supports midway portions of the plurality of the motor lead wires and the heater lead wire from the outer side between an outer face of the case and the cover side lead wire support part. 
       Effects of the Invention 
       [0028]    In the present invention, the case is provided with a motor lead wire passage which is extended in the “Y” direction so as to pass a position interposed in the “Z” direction between a turning center axial lines of gears included in a gear train and the case body part. Therefore, a plurality of the motor lead wires can be extended in the “Y” direction in a state that the positions in the “Z” direction of the motor lead wires are restricted. Further, the plurality of the motor lead wires is extended in the “Y” direction through the motor lead wire passage in a state that at least parts of the motor lead wires are bent to a side of the bottom plate part with respect to the connecting positions with the motor in the motor lead wire passage. Therefore, the motor lead wires can be led around to a position separated in the “Y” direction from the motor in a state that the motor lead wires and the gear train are not contacted with each other. Accordingly, flexibility for a power feeding position to the motor can be enhanced. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0029]      FIGS. 1( a ), 1( b ) and 1( c )  are perspective views showing a damper device to which the present invention is applied and which is viewed from a side where a baffle is disposed. 
           [0030]      FIGS. 2( a ) and 2( b )  are perspective views showing a damper device to which the present invention is applied and which is viewed from an opposite side to a side where a baffle is disposed. 
           [0031]      FIGS. 3( a ), 3( b ) and 3( c )  are explanatory views showing a leading-around structure of motor lead wires in a geared motor and a damper device to which the present invention is applied. 
           [0032]      FIGS. 4( a ), 4( b ) and 4( c )  are explanatory views showing an inside of a case in a geared motor and a damper device to which the present invention is applied. 
           [0033]      FIG. 5  is an explanatory view showing a motor lead wire passage which is formed in a case in a geared motor and a damper device to which the present invention is applied. 
           [0034]      FIG. 6  is a perspective outward appearance view showing a motor. 
           [0035]      FIGS. 7( a ), 7( b ) and 7( c )  are explanatory views schematically showing motor lead wires in a modified embodiment. 
           [0036]      FIGS. 8( a ), 8( b ) and 8( c )  are explanatory views showing a jig for performing connecting work of motor lead wires and a motor. 
       
    
    
     DESCRIPTION OF EMBODIMENTS 
       [0037]    A damper device for a refrigerator to which the present invention is applied will be described below with reference to the accompanying drawings. In the following descriptions, a turning center axial line of a baffle  4  is indicated by the “L”, a direction along the turning center axial line “L” is referred to as the “X” direction, a direction that an opening part  210  faces is referred to as the “Z” direction, and a direction perpendicular to the “X” direction and the “Z” direction is referred to as the “Y” direction. Further, the “X1” is one side in the “X” direction, the “X2” is the other side in the “X” direction, the “Y1” is one side in the “Y” direction, the “Y2” is the other side in the “Y” direction, the “Z1” is one side in the “Z” direction, and the “Z2” is the other side in the “Z” direction. 
       (Entire Structure) 
       [0038]      FIGS. 1( a ), 1( b ) and 1( c )  are perspective views showing a damper device  1  to which the present invention is applied and which is viewed from a side where a baffle  4  is disposed.  FIG. 1( a )  is a perspective view showing an entire damper device  1 ,  FIG. 1( b )  is an exploded perspective view showing the damper device  1  which is disassembled into a frame  2  and a case  3 , and  FIG. 1( c )  is an exploded perspective view showing the damper device  1  in which a baffle  4  is detached.  FIGS. 2( a ) and 2( b )  are perspective views showing the damper device  1  to which the present invention is applied and which is viewed from an opposite side to a side where the baffle  4  is disposed.  FIG. 2( a )  is a perspective view showing the entire damper device  1  and  FIG. 2( b )  is an exploded perspective view showing the damper device  1  which is disassembled into the frame  2  and the case  3 .  FIGS. 1( a ), 1( b ) and 1( c )  and  FIGS. 2( a ) and 2( b )  show a state that the baffle  4  closes an opening part  210 . Further, in  FIG. 1( b ) , heater lead wires  8  are shown so as to be held on a side of the case  3  for convenience but, when the case  3  is to be connected with a cover  20 , the heater lead wires  8  are held on the side of the cover  20 . 
         [0039]    As shown in  FIGS. 1( a ), 1( b ) and 1( c )  and  FIGS. 2( a ) and 2( b ) , the damper device  1  in this embodiment includes a flame  2  formed with a rectangular opening part  210  which opens in the “Z” direction, a baffle  4  for opening and closing the opening part  210  of the frame  2 , a baffle drive mechanism  6  which is disposed in a drive chamber  60  adjacent to the opening part  210  and the baffle  4  through a cover  20  on the other side “X2” in the “X” direction, and a case  3  which is fitted to the cover  20  from the other side “X2” in the “X” direction to section the drive chamber  60  between the cover  20  and the case  3 . In this embodiment, the cover  20  and the case  3  are connected by a hook mechanism  39 . In this state, the case  3 , the cover  20  and the baffle drive mechanism  6  structure a geared motor  10 . The cover  20  is formed with shaft parts  29  protruded to the other side “X2” in the “X” direction to position the case  3  with respect to the cover  20  and a cover side projection  28  which presses motor lead wires  7  described below. In this embodiment, the frame  2 , the cover  20  and the case  3  are made of resin. 
         [0040]    The frame  2  is provided with a rectangular end plate part  21  in which the opening part  210  is formed, and a body part  22  in a rectangular tube shape which is protruded to the other side “Z2” in the “Z” direction from an outer side edge of the end plate part  21 . In this embodiment, the cover  20  is structured as a portion of the body part  22  located on the other side “X2” in the “X” direction and is integrally formed with the frame  2 . 
         [0041]    A seal plate part  23  in a rectangular tube shape which is protruded toward a side where the baffle  4  is located is formed at an edge of the opening part  210  in the end plate part  21 . The baffle  4  is abutted with the seal plate part  23  to set the opening part  210  in a closed state. The baffle  4  includes an opening/closing plate  40  provided with a flat plate part  41  whose size is larger than the opening part  210 , and a sheet-shaped elastic member  49  made of foamed polyurethane or the like which is stuck on a face of the opening/closing plate  40  on a side of the opening part  210 . The elastic member  49  is abutted with a portion surrounding the opening part  210  (seal plate part  23 ) to close the opening part  210 . 
         [0042]    The baffle  4  is supported by the frame  2  so as to be turnable around the turning center axial line “L” extended in the “X” direction and the baffle drive mechanism  6  turns the baffle  4  around the turning center axial line “L” to open and close the opening part  210 . 
         [0043]    In this embodiment, a face of the end plate part  21  of the frame  2  on a side where the baffle  4  is located is attached with a heater  9  so as to surround the opening part  210  (surround the seal plate part  23 ). In this embodiment, the heater  9  is formed in a sheet shape. 
         [0044]    The damper device  1  is disposed on an inner side of a duct which structures a cold air passage. In this embodiment, cold air flows through the opening part  210  from an opposite side to a side where the baffle  4  is disposed with respect to the opening part  210 . Alternatively, cold air may flow through the opening part  210  from a side where the baffle  4  is disposed with respect to the opening part  210 . 
       (Structure of Baffle Drive Mechanism  6 ) 
       [0045]    In the damper device  1  and the geared motor  10  in this embodiment, the baffle drive mechanism  6  includes a motor  61  disposed on an inner side of the case  3  and a gear train  65  structured to transmit rotation of the motor  61  to the baffle  4  on one side “Y1” in the “Y” direction with respect to the motor  61 . In this embodiment, the motor  61  is a stepping motor. The case  3  is a bottomed case which is provided with a bottom plate part  31  located on the other side “X2” in the “X” direction and a rectangular tube shaped case body part  32  protruded to a side of the cover  20  (one side “X1” in the “X” direction) from the bottom plate part  31 . The case body part  32  is opened toward the one side “X1” in the “X” direction. The case body part  32  is provided with side plate parts  321  and  322  facing in the “Z” direction and side plate parts  323  and  324  facing in the “Y” direction. The bottom plate part  31  and the case body part  32  are, when viewed in the “X” direction, formed in a quadrangular shape whose long sides are extended in the “Y” direction and short sides are extended in the “Z” direction. The motor  61  is held between the frame  2  and the cover  20  by the case  3 . 
         [0046]    The gear train  65  includes a first gear  66  having a large diameter gear engaged with a motor pinion, a second gear  67  having a large diameter gear engaged with a small diameter gear of the first gear  66 , and a drive gear  68  having a large diameter gear engaged with a small diameter gear of the second gear  67 . Therefore, in the gear train  65 , the first gear  66 , the second gear  67  and the drive gear  68  structure a reduction gear train. Further, the gear train  65  includes a sector gear  69  which is engaged with the drive gear  68  and is driven by the drive gear  68 . The sector gear  69  is a final gear (output gear) located at the last stage of the gear train  65  and is connected with the baffle  4 . In this embodiment, all the gears of the gear train  65  (first gear  66 , second gear  67 , drive gear  68  and sector gear  69 ) are turnably supported by the bottom plate part  31  of the case  3  with their turning center axial lines directing in the “X” direction. 
         [0047]    In the damper device  1  structured as described above, the motor  61  is connected with totaled four (4) motor lead wires  7 . The motor lead wires  7  are, inside the drive chamber  60 , led around from a connecting position  79  with the motor  61  to one side “Y1” in the “Y” direction through the other side “Z2” in the “Z” direction and then extended toward the other side “X2” in the “X” direction and led out to the outside of the case  3 . 
         [0048]    Further, in the damper device  1 , the heater  9  is connected with totaled two (2) heater lead wires  8 . The heater lead wires  8  are connected with the heater  9  on one side “X1” in the “X” direction (side where the heater  9  is disposed) with respect to the cover  20  and then led around to the other side “X2” in the “X” direction with respect to the cover  20  through a heater lead wire passage  25  formed in the cover  20 , and then extended toward the other side “X2” in the “X” direction and led out to the outside of the case  3 . The heater lead wires  8  are extended toward the other side “X2” in the “X” direction juxtaposed with the motor lead wires  7  and led out to the outside of the case  3 . In this embodiment, the heater lead wire passage  25  is formed in an outer peripheral side edge part of the cover  20 . 
       (Fixing Structure of Motor Lead Wires  7  and Heater Lead Wires  8  and the Like) 
       [0049]    In order to extend the heater lead wires  8  toward the other side “X2” in the “X” direction and lead out to the outside of the case  3 , at least one of the cover  20  and the case  3  is formed with a lead wire support part for supporting midway portions of the heater lead wires  8  from an outer face side. In this embodiment, the cover  20  is structured with a cover side lead wire support part  26  which supports midway portions of the heater lead wires  8  from an outer face side between an outer face of the case body part  32  of the case  3  and the cover side lead wire support part  26 . More specifically, the heater lead wires  8  are extended in the “X” direction along the side plate part  321  of the case  3 , and the cover side lead wire support part  26  covers the heater lead wires  8  from the other side “Z2” (outer face side) in the “Z” direction and supports the midway portions of the heater lead wires  8  between the side plate part  321  of the case  3  and the cover side lead wire support part  26 . In this embodiment, also in a case that the motor lead wires  7  are to be extended toward the other side “X2” in the “X” direction and led out to the outside of the case  3 , the cover side lead wire support part  26  supports midway portions of the motor lead wires  7  between the outer face of the case body part  32  of the case  3  and the cover side lead wire support part  26 . More specifically, the motor lead wires  7  are extended in the “X” direction along the side plate part  321  of the case  3 , and the cover side lead wire support part  26  covers the motor lead wires  7  from the other side “Z2” (outer face side) in the “Z” direction and supports the midway portions of the motor lead wires  7  between the side plate part  321  and the cover side lead wire support part  26 . Therefore, at the time of assembling of the damper device  1 , portions of the motor lead wires  7  and the heater lead wires  8  extended to the other side “X2” in the “X” direction are fixed by the case  3  and the cover  20 . Therefore, much troublesome labor is not required for fixing portions of the motor lead wires  7  and the heater lead wires  8  extended to the other side “X2” in the “X” direction. 
         [0050]    In this embodiment, a portion of the side plate part  321  overlapped with the motor lead wires  7  and the heater lead wires  8  is formed in a recessed part  33  which is recessed to a side of the drive chamber  60  and the cover side lead wire support part  26  is formed in a plate shape. Therefore, when the case  3  is to be fitted to the cover  20  from the other side “X2” in the “X” direction, the cover side lead wire support part  26  is inserted to the recessed part  33  from one side “X1” in the “X” direction and the motor lead wires  7  and the heater lead wires  8  are supported between the bottom part  330  of the recessed part  33  and the cover side lead wire support part  26 . 
         [0051]    The cover side lead wire support part  26  is provided with a flat plate part  261 , which covers the motor lead wires  7  and the heater lead wires  8  on the other side “Z2” in the “Z” direction, and protruded plate parts  262  protruded to one side “Z1” in the “Z” direction from both ends in the “Y” direction of the flat plate part  261 . Respective tip ends of the two protruded plate parts  262  are bent toward opposite sides to each other. On the other hand, the recessed part  33  of the case  3  are formed with groove-shaped engaging parts  331  extended in the “X” direction at both ends in the “Y” direction of the bottom part  330 . Therefore, when the cover side lead wire support part  26  is inserted to the recessed part  33 , respective tip ends of two protruded plate parts  262  are fitted to the groove-shaped engaging parts  331  formed in the recessed part  33  of the case  3 . As a result, the cover side lead wire support part  26  is positioned in the “Y” direction and the “Z” direction. Therefore, the position of the cover side lead wire support part  26  is determined surely and thus, the motor lead wires  7  and the heater lead wires  8  can be surely fixed. 
         [0052]    In this state, a distance between the side plate part  321  and the cover side lead wire support part  26  (distance between the bottom part  330  of the recessed part  33  and the flat plate part  261 ) is larger than a diameter of the motor lead wire  7  and a diameter of the heater lead wire  8 . Therefore, in a state shown in  FIG. 2( b ) , when the cover  20  and the case  3  are to be connected with each other, the motor lead wires  7  and the heater lead wires  8  are not scratched. Accordingly, the cover  20  and the case  3  can be easily connected with each other and insulation coating layers of the motor lead wire  7  and the heater lead wire  8  are hard to be damaged. 
         [0053]    Further, in this embodiment, the side plate part  321  of the case  3  is formed with a case side lead wire support part  34  which covers the heater lead wire passage  25  from the other side “Z2” in the “Z” direction and supports midway portions of the motor lead wires  7  from the other side “Z2” (outer face side) in the “Z” direction. 
         [0054]    The heater lead wire passage  25  is provided with a first passage which opens toward one side “X1” in the “X” direction, a second passage which is bent from an end part of the first passage on the other side “X2” in the “X” direction to the other side “Y2” in the “Y” direction, and a third passage which is bent from an end part of the second passage on an opposite side to a side of the first passage to the other side “X2” in the “X” direction. The cover side lead wire support part  26  is provided in the third passage. Therefore, after the heater lead wires  8  are pushed to the heater lead wire passage  25  from the other side “Z2” in the “Z” direction, when the heater lead wires  8  are fitted to one side “Z1” in the “Z” direction of the cover side lead wire support part  26  from one side “Y1” in the “Y” direction, the heater lead wires  8  are held by the cover  20 . In this state, even when the heater lead wires  8  are pulled to the other side “X2” in the “X” direction, the pulling force is received by the bent portion of the heater lead wire passage  25 . Therefore, the force is hard to reach to the connecting position  95  of the heater lead wires  8  with the heater  9  and thus connection of the heater lead wires  8  and the heater  9  is hard to be disengaged. 
       (Leading-Around Structure of Motor Lead Wire  7 ) 
       [0055]      FIGS. 3( a ), 3( b ) and 3( c )  are explanatory views showing a leading-around structure of motor lead wires  7  in the geared motor  10  and the damper device  1  to which the present invention is applied.  FIG. 3( a )  is a plan view showing an inside of the case  3  viewed from one side “X1” in the “X” direction,  FIG. 3( b )  is an explanatory view showing a bent structure of the motor lead wires  7  viewed in the “Z” direction, and  FIG. 3( c )  is an explanatory view showing a juxtaposed state of the motor lead wires  7  viewed in the “Y” direction.  FIGS. 4( a ), 4( b ) and 4( c )  are explanatory views showing an inside of the case  3  in the geared motor  10  and the damper device  1  to which the present invention is applied.  FIG. 4( a )  is a perspective view showing an inside of the case  3 ,  FIG. 4( b )  is a perspective view showing a state that the gear train  65  and the like are detached, an  FIG. 4( c )  is an explanatory view showing a state that the motor lead wires  7  are further detached.  FIG. 5  is an explanatory view showing a motor lead wire passage  30  which is formed in the case  3  in the geared motor  10  and the damper device  1  to which the present invention is applied. In  FIGS. 3( a ), 3( b ) and 3( c )  and  FIGS. 4( a ), 4( b ) and 4( c ) , the heater lead wires  8  are not shown. 
         [0056]    As shown in  FIGS. 3( a ), 3( b ) and 3( c ) ,  FIGS. 4( a ), 4( b ) and 4( c )  and  FIG. 5 , in the geared motor  10  and the damper device  1  in this embodiment, the case  3  is provided with a motor lead wire passage  30  which is extended in the “Y” direction so as to pass a position interposed in the “Z” direction between a turning center axial line of a gear included in the gear train  65  and the case body part  32 . A plurality of the motor lead wires  7  is extended from the other side “Y2” to one side “Y1” in the “Y” direction passing through the motor lead wire passage  30 . In this embodiment, a depth direction of the motor lead wire passage  30  is the “X” direction, and the other side “X2” in the “X” direction of the motor lead wire passage  30  is structured of the bottom plate part  31 . Therefore, the motor lead wire passage  30  is reached to the bottom plate part  31  on the other side “X2” in the “X” direction. 
         [0057]    In this embodiment, the case  3  is provided with the motor lead wire passage  30  at a position interposed in the “Z” direction between a turning center axial line “L 68 ” of the drive gear  68  included in the gear train  65  and the side plate part  321  located on the other side “Z2” in the “Z” direction of the case body part  32 . More specifically, the bottom plate part  31  of the case  3  is formed with a support shaft  38  which turnably supports the drive gear  68  and a first plate-shaped projection  351  whose plate thickness direction is the “Z” direction is formed between the support shaft  38  and the side plate part  321 . The first plate-shaped projection  351  is extended in the “Y” direction so as to face the side plate part  321  in the “Z” direction. Therefore, the motor lead wire passage  30  in a slit shape which opens toward the “X” direction is formed between the first plate-shaped projection  351  and the side plate part  321 . Further, in this embodiment, the bottom plate part  31  of the case  3  is also formed with a second plate-shaped projection  352  whose plate thickness direction is the “Z” direction at a position separated from the first plate-shaped projection  351  on the other side “Y2” in the “Y” direction. The second plate-shaped projection  352  is, similarly to the first plate-shaped projection  351 , extended in the “Y” direction so as to face the side plate part  321  in the “Z” direction. Therefore, in this embodiment, the motor lead wire passage  30  in a slit shape which opens toward the “X” direction is formed between the first plate-shaped projection  351  and the side plate part  321  and between the second plate-shaped projection  352  and the side plate part  321 . 
         [0058]    Therefore, a plurality of the motor lead wires  7  is extended from the other side “Y2” in the “Y” direction to one side “Y1” passing the motor lead wire passage  30  and, in this state, a part of the plurality of the motor lead wires  7  is overlapped with the drive gear  68  on the other side “X2” in the “X” direction part in the motor lead wire passage  30  when viewed in the “X” direction. 
         [0059]    Therefore, in this embodiment, as shown in  FIG. 3( b )  and  FIG. 4( b ) , a plurality of the motor lead wires  7  is bent in the motor lead wire passage  30  so that at least a part of the motor lead wires  7  is located on a side of the bottom plate part  31  with respect to their connecting positions  79  with the motor  61  and is passed through the motor lead wire passage  30  and extended to one side “Y1” from the other side “Y2” in the “Y” direction. 
         [0060]    More specifically, each of a plurality of the motor lead wires  7  is provided with a first portion  71  extended from the connecting position  79  with the motor  61 , a second portion  72  which is bent to the other side “X2” in the “X” direction from an end part of the first portion  71  and extended in the motor lead wire passage  30 , and a third portion  73  which is bent to one side “Y1” in the “Y” direction from an end part on the other side “X2” in the “X” direction of the second portion  72  and is extended in the motor lead wire passage  30 . Further, each of a plurality of the motor lead wires  7  is provided with a fourth portion  74  which is bent from an end part on one side “Y1” in the “Y” direction of the third portion  73  to one side “X1” in the “X” direction and is extended in the motor lead wire passage  30  and a fifth portion  75  which is extended from an end part on one side “X1” in the “X” direction of the fourth portion  74 . Therefore, in each of a plurality of the motor lead wires  7 , at least a part of the third portion  73  is overlapped with the drive gear  68  in the “X” direction when viewed in the “X” direction. This state is maintained by firmness (shape retaining force) of the motor lead wire  7  itself. Further, bent portions in the “X” direction are existed on both sides of the third portion  73 . Therefore, the third portion  73  is hard to be floated to one side “X1” in the “X” direction. 
         [0061]    The first portion  71  is extended to the other side “Z2” in the “Z” direction from the connecting position  79  with the motor  61 . Further, the fifth portion  75  is extended to the other side “Z2” in the “Z” direction from the fourth portion  74  and further extended to the other side “X2” in the “X” direction. In this embodiment, the fifth portion  75  is passed through a cut-out part  329  formed in the side plate part  321  of the case  3  and a tip end side of the fifth portion  75  is further extended to the other side “X2” in the “X” direction in a state that the fifth portion  75  is grasped and held from both sides in the “Y” direction by the side plate part  321  of the case  3 . Therefore, even when the fifth portion  75  is pulled to the other side “X2” in the “X” direction, the third portion  73  is hard to be floated to one side “X1” in the “X” direction. Accordingly, even in a case that a plurality of the motor lead wires  7  and the drive gear  68  are overlapped with each other when viewed having looked from “X” direction, the motor lead wires  7  and the drive gear  68  are hard to be contacted with each other. 
         [0062]    Further, the cover side projection  28  shown in  FIG. 2( b )  is protruded from the cover  20  toward the other side “X2” in the “X” direction at a position displaced to the other side “Y2” in the “Y” direction with respect to the drive gear  68 , and prevents the third portion  73  of the motor lead wire  7  from displacing to one side “X1” in the “X” direction. 
         [0063]    In this embodiment, a plurality of the motor lead wires  7  is extended in the “Y” direction in the motor lead wire passage  30  so that they are arranged in parallel or juxtaposed in the “X” direction and, in this state, a plurality of the motor lead wires  7  is structured of the second portion  72 , the third portion  73 , the fourth portion  74  and the like which are bent at plural positions. In order to attain this structure, in this embodiment, a plurality of motor lead wires  7  is structured of a flat cable  70  in which a plurality of motor lead wires  7  are connected with each other in a juxtaposed state in a row. A part in a length direction of the flat cable  70  is separated into a plurality of the motor lead wires  7  and connected with the motor  61 . Also in this case, at least a portion accommodated in the motor lead wire passage  30  is in a state of the flat cable  70  and a thickness direction of the flat cable  70  is the “Z” direction. Therefore, the third portion  73  of a plurality of the motor lead wires  7  is easily accommodated in the motor lead wire passage  30 . 
         [0064]    In this embodiment, the third portions  73  of a plurality of the motor lead wires  7  are, as shown in  FIG. 3( c ) , juxtaposed in the “X” direction and in a state of the flat cable  70  in an obliquely inclined state in the “Z” direction. Therefore, a region occupied by a plurality of the motor lead wires  7  in the “X” direction is narrow and thus, even in a case that the third portions  73  and the drive gear  68  are overlapped with each other when viewed in the “X” direction, the motor lead wires  7  and the drive gear  68  are hard to be contacted with each other. 
         [0065]    In order to attain the structure, in this embodiment, as shown in  FIG. 5 , an inner face of the side plate part  321  of the case  3  is formed with a first projection  36  in a plate shape provided with a lead wire receiving part  361  which is obliquely inclined from the “X” direction to the “Z” direction in the motor lead wire passage  30 . The third portions  73  (flat cable  70 ) of a plurality of the motor lead wires  7  are supported in an obliquely inclined state in the “Z” direction along the lead wire receiving part  361  (see  FIG. 3( c ) ). Further, an inner face of the side plate part  321  of the case  3  is formed with a second projection  37  in a plate shape provided with a lead wire receiving part  371  which is obliquely inclined from the “X” direction to the “Z” direction in the motor lead wire passage  30  at a position separated from the first projection  36  on one side “Y1” in the “Y” direction. The third portions  73  (flat cable  70 ) of a plurality of the motor lead wires  7  are supported in an obliquely inclined state in the “Z” direction along the lead wire receiving part  371  (see  FIG. 3( c ) ). 
         [0000]    (Connecting Structure of Motor Lead Wire  7  with Motor  61 ) 
         [0066]    In this embodiment, a plurality of the motor lead wires  7  has the same length as each other. The motor lead wire  7  is structured of a core wire having conductivity which is coated by a film made of insulating material and films of adjacent motor lead wires  7  are fusion-bonded to structure the flat cable  70 . A plurality of the motor lead wires  7  is respectively shown by the reference signs  7 A,  7 B,  7 C and  7 D (see  FIGS. 3( a ) and 3( b ) ). The motor lead wires  7 A,  7 B,  7 C and  7 D are separated from each other in the first portions  71  extended from the connecting positions  79  with the motor  61  and in the connected portions of the first portions  71  with the second portions  72 . 
         [0067]      FIG. 6  is a perspective outward appearance view showing the motor  61 . The motor  61  includes a rotor  62  provided with a permanent magnet on an outer peripheral side of a rotation shaft and a tube shaped stator  63  which surrounds an outer peripheral side of the rotor  62 . The motor  61  is disposed in the drive chamber  60  in a state that a turning center axial line “L 62 ” of the rotor  62  is directed in the “X” direction. The stator  63  includes a pair of outer stator cores  631  and  632  in a bottomed tube shape which are also served as a motor case. The stator  63  is formed with an opening part  633  which is formed by cutting out side faces of the outer stator cores  631  and  632  on the other side “Z2” in the “Z” direction, and a terminal block  64  is provided in the opening part  633 . The terminal block  64  holds a plurality of terminal pins  5 . The number of arranged terminal pins  5  corresponds to the number of the motor lead wires  7 . A plurality of the terminal pins  5  is respectively shown by the reference signs  5 A,  5 B,  5 C and  5 D. The terminal pins  5 A,  5 B,  5 C and  5 D are arranged in a line in this order from one side “Y1” in the “Y” direction toward the other side “Y2”. 
         [0068]    The terminal block  64  is extended in the “Y” direction and is provided with a first face  641  which faces the other side “Z2” in the “Z” direction and a second face  642  which faces one side “X1” in the “X” direction. First terminal parts  51  which are one end parts of the terminal pins  5 A,  5 B,  5 C and  5 D are protruded from the first face  641  of the terminal block  64  side by side in a line in the “Y” direction. Further, second terminal parts  52  which are the other end parts of the terminal pins  5 A,  5 B,  5 C and  5 D are protruded from the second face  642  of the terminal block  64  side by side in a line in the “Y” direction. The first terminal parts  51  are portions around which lead-out wires of coils provided in the stator  63  are bound and connected, and the second terminal parts  52  are portions with which core wires of the motor lead wires  7 A,  7 B,  7 C and  7 D are connected by soldering or the like. 
         [0069]    As shown in  FIG. 3( a ) , the first portions  71  of the motor lead wires  7  ( 7 A,  7 B,  7 C and  7 D) are respectively extended in the “Z” direction in a state that the motor lead wires  7 A,  7 B,  7 C and  7 D are separated from each other and, in addition, these four wires are juxtaposed in this order from one side “Y1” to the other side “Y2” in the “Y” direction. At the connecting positions  79 , the motor lead wire  7 A is connected with the terminal pin  5 A, the motor lead wire  7 B is connected with the terminal pin  5 B, the motor lead wire  7 C is connected with the terminal pin  5 C, and the motor lead wire  7 D is connected with the terminal pin  5 D. 
         [0070]    In the second portions  72 , the four motor lead wires  7 A,  7 B,  7 C and  7 D are bent from a state juxtaposed in the “Y” direction to a state juxtaposed in the “X” direction. Further, in the third portions  73 , as described above, the four motor lead wires  7 A,  7 B,  7 C and  7 D are juxtaposed in this order from one side “X1” in the “X” direction to the other side “X2” to structure the flat cable  70  and are extended in the “Y” direction. The fourth portions  74  are bent from the state that the four motor lead wires  7 A,  7 B,  7 C and  7 D are juxtaposed in the “X” direction to a reverse arrangement state to the first portions  71 , in other words, to a state that the motor lead wires  7 D,  7 C,  7 B and  7 A are juxtaposed from one side “Y1” in the “Y” direction toward the other side “Y2” in this order. In the fifth portions  75 , the motor lead wires  7 D,  7 C,  7 B and  7 A are extended in the “Z” direction toward the cut-out part  329  of the case  3  in a state juxtaposed in the “Y” direction. 
         [0071]    In this embodiment, work for incorporating the motor lead wires  7  in the motor lead wire passage  30  is, for example, performed as follows. First, before incorporating the motor  61  in the drive chamber  60 , the motor lead wires  7  ( 7 A,  7 B,  7 C and  7 D) and the second terminal parts  52  of the terminal pins  5  ( 5 A,  5 B,  5 C and  5 D) are connected with each other by soldering or the like and, after that, the motor  61  is incorporated in the drive chamber  60 . After that, while successively bending a plurality of the motor lead wires  7  ( 7 A,  7 B,  7 C and  7 D) connected with the terminal pins  5  ( 5 A,  5 B,  5 C and  5 D) so as to structure the first portions  71 , the second portions  72 , the third portions  73 , the fourth portions  74  and the fifth portions  75 , the plurality of the motor lead wires  7  are successively incorporated in the case  3  from the other side “Y2” toward one side “Y1” in the “Y” direction. 
       Principal Effects in this Embodiment 
       [0072]    As described above, in the damper device  1  and the geared motor  10  in this embodiment, the case  3  is provided with the motor lead wire passage  30  which is extended in the “Y” direction so as to pass a position interposed in the “Z” direction between the turning center axial line “L 68 ” of the drive gear  68  included in the gear train  65  and the side plate part  321  of the case body part  32 . Therefore, a plurality of the motor lead wires  7  can be extended in the “Y” direction in a state that the positions in the “Z” direction of the motor lead wires  7  are restricted. Further, the plurality of the motor lead wires  7  is extended in the motor lead wire passage  30  from the other side “Y2” to one side “Y1” in the “Y” direction in a state that at least parts of the motor lead wires  7  are bent to a side of the bottom plate part  31  with respect to the connecting positions  79  with the motor  61 , and this state is maintained by firmness (shape retaining force) of the motor lead wire  7  itself. Therefore, the motor lead wires can be led around to a position separated in the “Y” direction from the motor  61  in a state that the motor lead wires  7  and the gear train  65  are not contacted with each other. Accordingly, flexibility for a power feeding position to the motor can be enhanced. 
         [0073]    The motor lead wire passage  30  is formed in a slit shape which opens toward one side “X1” in the “X” direction and thus the motor lead wires  7  can be put in the motor lead wire passage  30  from one side “X1” in the “X” direction. Therefore, the motor lead wires  7  are easily led around. 
         [0074]    The motor lead wire passage  30  is structured by the bottom plate part  31  on the other side “X2” in the “X” direction. Therefore, parts of the motor lead wires  7  can be bent to a position contacting with the bottom plate part  31  or a position close to the bottom plate part  31 . Therefore, when viewed in the “X” direction, even in a case that a plurality of the motor lead wires  7  and the drive gear  68  are overlapped with each other, the motor lead wires  7  and the drive gear  68  are hard to be contacted with each other. 
         [0075]    Parts of a plurality of the motor lead wires  7  are, when viewed in the “X” direction, overlapped with the drive gear  68  on the other side “X2” in the “X” direction in the motor lead wire passage  30  and thus a dimension in the “Z” direction of the geared motor  10  can be reduced. 
         [0076]    The third portions  73  of the motor lead wires  7  which are bent toward the other side “X2” in the “X” direction are overlapped with the drive gear  68  in the “X” direction and thus the motor lead wires  7  and the drive gear  68  are hard to be contacted with each other. Further, the third portions  73  of the motor lead wires  7  are prevented from displacing to one side “X1” in the “X” direction by the cover side projection  28  formed in the cover  20  and thus the motor lead wires  7  and the drive gear  68  are hard to be contacted with each other. 
         [0077]    The third portions  73  of the motor lead wires  7  are juxtaposed in the “X” direction in the motor lead wire passage  30  and thus a region occupied by the third portions  73  of the motor lead wires  7  is narrow in the “Z” direction. Therefore, even when the third portions  73  of the motor lead wires  7  are disposed at a position near the turning center axial line “L 68 ” of the drive gear  68 , the motor lead wires  7  and the drive gear  68  are hard to be contacted with each other. 
         [0078]    The motor  61  is held by the case  3  and the gear train  65  is turnably supported by the bottom plate part  31  of the case  3 . Therefore, when the motor  61  and the gear train  65  are incorporated in the case  3  and then the cover  20  is fitted, assembling work can be easily performed. Further, the cover  20  is integrally structured with the frame  2  and thus, in comparison with a case that the cover  20  is separately structured from the frame  2 , assembling efficiency is improved and the number of components can be reduced. 
       (Modified Embodiment of Leading-Around Structure of Motor Lead Wire  7 ) 
       [0079]    In the embodiment described above, a plurality of the motor lead wires  7  ( 7 A,  7 B,  7 C and  7 D) is extended in the “Y” direction in a state juxtaposed in the “X” direction in the motor lead wire passage  30 . However, as shown in  FIG. 3( a ) , a plurality of the terminal pins  5  ( 5 A,  5 B,  5 C and  5 D) with which the motor lead wires  7 A,  7 B,  7 C and  7 D are connected is disposed in a line in the “Y” direction and distances of the respective terminal pins from an outlet  30   a  of the motor lead wire passage  30  are different from each other. In this case, the outlet  30   a  of the motor lead wire passage  30  is the outlet  30   a  going toward the other side “Y2” in the “Y” direction from the motor lead wire passage  30  and is provided at a position between an end part on the other side “Y2” in the “Y” direction of the second plate-shaped projection  352  by which the motor lead wire passage  30  is sectioned and the side plate part  321 . 
         [0080]    In a modified embodiment, a plurality of motor lead wires  17  (hereinafter, shown by the reference signs  17 A,  17 B,  17 C and  17 D) having lengths different from the above-mentioned embodiment is used. Further, a bending tendency giving process in which the motor lead wires  17  ( 17 A,  17 B,  17 C and  17 D) are previously formed in a shape of a wiring space within the case  3  is performed. Next, the same reference signs are used in the same portions as the embodiment described above and their descriptions are omitted and different portions will be described below by using different reference signs. 
         [0081]      FIGS. 7( a ), 7( b ) and 7( c )  are explanatory views schematically showing motor lead wires  17  in a modified embodiment.  FIG. 7( a )  shows a state that the motor lead wires  17  are not connected with the motor  61 ,  FIG. 7( b )  shows a state that the motor lead wires  17  are connected with the motor  61 , and  FIG. 7( c )  shows a state that a bending tendency giving process has been performed on the motor lead wires  17 . As shown in  FIG. 7( b )  and  FIG. 7( c ) , in the modified embodiment, a plurality of motor lead wires  17 A,  17 B,  17 C and  17 D whose lengths are different from each other are connected with the motor  61 . The motor lead wires  17 A,  17 B,  17 C and  17 D are, similarly to the embodiment described above, provided with a portion structuring a flat cable  70  and a portion (separated part  76 ) separated into respective wires. 
         [0082]    As shown in  FIG. 7( a ) , a plurality of the motor lead wires  17 A,  17 B,  17 C and  17 D are juxtaposed to each other in this order. The separated part  76  is structured so that lengths of the motor lead wires  17 A,  17 B,  17 C and  17 D from a portion connected with the flat cable  70  to their tip ends are set longer in the order of the motor lead wires  17 A,  17 B,  17 C and  17 D. When the separated part  76  is extended toward the motor  61  side, the tip end parts of the motor lead wires  17 A,  17 B,  17 C and  17 D are arranged in this order from one side “Y1” to the other side “Y2” in the “Y” direction. In other words, the tip end parts of the motor lead wires  17 A,  17 B,  17 C and  17 D are disposed in the same order as the terminal pins  5 A,  5 B,  5 C and  5 D on the other side “Z2” in the “Z” direction of the terminal block  64 . 
         [0083]    In the modified embodiment, the terminal pins  5 A,  5 B,  5 C and  5 D provided in the motor  61  are sequentially connected with the motor lead wires  17 A,  17 B,  17 C and  17 D in the shorter order of the length and in the nearer order from the outlet  30   a  of the motor lead wire passage  30  (in the order of the terminal pins  5 A,  5 B,  5 C and  5 D). As a result, in a state that the motor  61  is incorporated in the case  3 , a plurality of the terminal pins  5 A,  5 B,  5 C and  5 D are connected with the motor lead wires  17  having shorter lengths as they are nearer to the outlet  30   a  of the motor lead wire passage  30 . 
         [0084]    The motor lead wires  17 A,  17 B,  17 C and  17 D are juxtaposed in this order from the opening part of the motor lead wire passage  30  toward the bottom part (from one side “X1” toward the other side “X2” in the “X” direction) when incorporated in the motor lead wire passage  30 . Therefore, the motor lead wires  17 A,  17 B,  17 C and  17 D are overlapped with each other from one side “X1” to the other side “X2” in the “X” direction in the shorter order of the length at the outlet  30   a  of the motor lead wire passage  30 . Accordingly, a plurality of the terminal pins  5 A,  5 B,  5 C and  5 D is sequentially connected with the motor lead wires  17 A,  17 B,  17 C and  17 D in the nearer order from the outlet  30   a  of the motor lead wire passage  30  (in the order of the terminal pins  5 A,  5 B,  5 C and  5 D) and in the order of the position located on one side “X1” in the “X” direction. 
         [0085]    In the modified embodiment, as described above, the lengths of the motor lead wires  17 A,  17 B,  17 C and  17 D are different from each other and thus, when their end parts are respectively connected with the terminal pins  5 A,  5 B,  5 C and  5 D, the separated part  76  is curved in a shape shown in  FIG. 7( b )  as a whole. In other words, the separated part  76  is deformed in a shape bent to one side “Z1” in the “Z” direction as a whole by performing connecting work with the terminal pins  5 A,  5 B,  5 C and  5 D without forcibly bending the separated part  76  to one side “Z1” in the “Z” direction after connection. This shape is a shape corresponding to a shape of the wiring space where the first portions  71  and the second portions  72  are disposed. Therefore, connecting work of the motor lead wires  17 A,  17 B,  17 C and  17 D with the motor  61  is easily performed, and incorporating to the motor lead wire passage  30  and incorporating to the wiring space from the motor lead wire passage  30  toward the drive chamber  60  side are also easily performed. Accordingly, a working hour for wiring work can be shortened. In accordance with an embodiment of the present invention, it may be structured that tip end parts of the motor lead wires  17 A,  17 B,  17 C and  17 D are previously bent and all of four wires are arranged in shapes bent to one side “Z1” in the “Z” direction and, after that, the tip end parts of the motor lead wires  17 A,  17 B,  17 C and  17 D are connected with the terminal pins  5 A,  5 B,  5 C and  5 D. 
         [0086]    The motor lead wires  17 A,  17 B,  17 C and  17 D are connected with a plurality of the terminal pins  5 A,  5 B,  5 C and  5 D so that a motor lead wire having a shorter length and located on the opening part side (one side “X1” in the “X” direction) in the motor lead wire passage  30  is connected with the terminal pin nearer to the outlet  30   a  of the motor lead wire passage  30 . Therefore, in the first portions  71  and the second portions  72 , it can be avoided that lengths of the motor lead wires  17 A,  17 B,  17 C and  17 D become needlessly longer and that margin of the length is insufficient. For example, excessive slack of the motor lead wire  17 A connected with the terminal pin  5 A which is the nearest to the outlet  30   a  can be avoided. Further, the motor lead wire  17 D connected with the terminal pin  5 D on the farthest side from the outlet  30   a  can be avoided from being pulled at the time of being incorporated. Further, a longer motor lead wire is led around from the bottom part side of the motor lead wire passage  30  to a far side and a shorter motor lead wire is led around from the opening part side of the motor lead wire passage  30  to a near side and thus the motor lead wires  17 A,  17 B,  17 C and  17 D can be orderly led around. Also from this point, incorporating of the motor lead wires  17 A,  17 B,  17 C and  17 D to the motor lead wire passage  30  and incorporating to the wiring space from the motor lead wire passage  30  toward the drive chamber  60  side are easily performed. Therefore, a working hour for wiring work can be shortened. 
         [0087]    As shown in  FIG. 7( c ) , in the modified embodiment, after a plurality of the motor lead wires  17 A,  17 B,  17 C and  17 D whose lengths are different from each other is connected with the motor  61 , a bending tendency in a shape bent to the other side “Z2” in the “Z” direction so as to correspond to the shape of the wiring space of the case  3  is given to connecting portions of the fourth portions  74  with the fifth portions  75  of the motor lead wires  17 A,  17 B,  17 C and  17 D in the embodiment described above. For example, the motor lead wires  17 A,  17 B,  17 C and  17 D are wound around a bending tendency giving member  84  in a bar shape as shown by the broken line in  FIG. 7( c ) . Next, coating films coated on the core wires of the motor lead wires  17 A,  17 B,  17 C and  17 D are pressed against an outer peripheral face of the bending tendency giving member  84  and the coating films are deformed in a shape corresponding to its outer peripheral face. In this manner, as shown in  FIG. 7( c ) , the motor lead wires  17 A,  17 B,  17 C and  17 D are given with a bending tendency in a bent shape. In this case, a jig used for giving a bending tendency is not limited to a bar shape and another shape around which the motor lead wires  17 A,  17 B,  17 C and  17 D are capable of being wound in a bent shape may be adopted. 
         [0088]    As described above, when the motor lead wires  17 A,  17 B,  17 C and  17 D are previously given with a bending tendency in a shape of the wiring space in the case  3 , in a case that the bent portions are to be incorporated to the wiring space, bending work in the shape of the wiring space is not required and it is sufficient that the bent portions are fitted to the wiring space. Therefore, workability of wiring work is improved and a working hour can be shortened. 
         [0089]      FIGS. 8( a ), 8( b ) and 8( c )  are explanatory views showing an example of a jig which is used for connecting work of the motor lead wires  17 A,  17 B,  17 C and  17 D and the motor  61 .  FIG. 8( a )  is a front view,  FIG. 8( b )  is a side view, and  FIG. 8( c )  shows a working condition. In the modified embodiment, a stator  63  to which a rotor  62  is not assembled is attached to a jig  80 , motor lead wires  17 A,  17 B,  17 C and  17 D are connected with terminal pins  5 A,  5 B,  5 C and  5 D of the stator  63  in advance before assembled into the case  3 . 
         [0090]    The jig  80  is provided with a pedestal part  82  which is placed on a workbench  90 , a vertical plate part  81  standing up toward an upper side from the pedestal part  82 , and a stator mounting part  83  in a columnar shape which is protruded from a surface of the vertical plate part  81 . As shown in  FIG. 8( c ) , the stator  63  is attached to the stator mounting part  83  in a posture that the terminal block  64  is located on a lower side. In this state, the motor lead wires  17 A,  17 B,  17 C and  17 D are extended to a lower side of the stator mounting part  83  and the separated part  76  is disposed to a lower side of the terminal block  64 . Then, one end parts of the motor lead wires  17 A,  17 B,  17 C and  17 D are lifted one by one to an upper side and connected with the terminal pins  5 A,  5 B,  5 C and  5 D by soldering or the like. 
         [0091]    When a bending tendency giving member  84  in a bar shape is provided next to the stator mounting part  83  as shown by the broken line in  FIG. 8( c ) , it can be also structured that the motor lead wires  17 A,  17 B,  17 C and  17 D are led around from a lower side of the stator  63  to a side of the bending tendency giving member  84  to perform bending tendency giving work. In this case, it is desirable that a positional relationship between the bending tendency giving member  84  and the stator mounting part  83  is set so as to correspond to a positional relationship between the motor  61  and the bent portions (connected portions of the fourth portions  74  with the fifth portions  75 ) of the motor lead wires  17 A,  17 B,  17 C and  17 D when assembled in the case  3 . 
         [0092]    In the modified embodiment, work for incorporating a plurality of the motor lead wires  17  to the motor lead wire passage  30  is, for example, performed as follows. First, motor lead wires  17 A,  17 B,  17 C and  17 D are connected with a stator  63  by using the above-mentioned jig  80  before a rotor  62  is incorporated (first process). Next, portions which structure the fourth portions  74  and the fifth portions  75  of the motor lead wires  17 A,  17 B,  17 C and  17 D are given with a bending tendency in a shape bent by a bending tendency giving member  84  in advance (second process). Next, the rotor  62  and the stator  63  are assembled to structure a motor  61  and then the motor  61  is assembled to a drive chamber  60  of a case  3  (third process). After that, the motor lead wires  17 A,  17 B,  17 C and  17 D which are connected with the terminal pins  5 A,  5 B,  5 C and  5 D of the motor  61  and are given with a bending tendency are incorporated to a wiring space in the case  3  (fourth process). 
         [0093]    Required times for wiring work and the like were measured in a case that the motor lead wires  7 A,  7 B,  7 C and  7 D in the embodiment described above are used and a case that the motor lead wires  17 A,  17 B,  17 C and  17 D in the modified embodiment are used. As a result, a total required time of work for incorporating the motor  61  to the drive chamber  60  of the case  3  and work for incorporating the motor lead wires  7 A,  7 B,  7 C and  7 D/ 17 A,  17 B,  17 C and  17 D which are connected with the motor  61  to the wiring space in the case  3  including the motor lead wire passage  30  and leading out from the cut-out part  329  to the outside of the case  3  (in other words, a required time of the third process and the fourth process) was 16.63 seconds in a case of the motor lead wires  7 A,  7 B,  7 C and  7 D in the embodiment described above (lengths are the same and a bending tendency is not given) and was 10.03 seconds in a case of the motor lead wires  17 A,  17 B,  17 C and  17 D in the modified embodiment (lengths are different and a bending tendency is given). Therefore, in the modified embodiment, it was confirmed that a working hour of the wiring work can be shortened. 
         [0094]    In the modified embodiment, all of the lengths of a plurality of the motor lead wires  17 A,  17 B,  17 C and  17 D are different from each other but lengths of some of a plurality of the motor lead wires may be different from others. For example, lengths of adjacent two or three motor lead wires may be set the same as each other. Even in this structure, some of a plurality of the terminal pins  5 A,  5 B,  5 C and  5 D can be connected with motor lead wires whose length is shorter as nearer to the outlet  30   a  of the motor lead wire passage  30 . Therefore, some of a plurality of the motor lead wires  17 A,  17 B,  17 C and  17 D are avoided from occurring excessive slack and from being pulled due to insufficient margin of the length. Further, the number of the motor lead wires is not limited to four but the present invention may be applied to a structure that motor lead wires having another number are led around. 
       Other Embodiments 
       [0095]    Although the present invention has been shown and described with reference to a specific embodiment, various changes and modifications will be apparent to those skilled in the art from the teachings herein. For example, the present invention may be applied to a case that the cover  20  is separately structured from the frame  2 . Further, the damper device  1  in the embodiment described above is for a refrigerator but the present invention is not limited to a damper device used for a refrigerator. 
       REFERENCE SIGNS LIST 
       [0000]    
       
         
           
               1  damper device 
               2  frame 
               3  case 
               4  baffle 
               5 ,  5 A through  5 D terminal pin 
               6  baffle drive mechanism 
               7 ,  7 A through  7 D motor lead wire 
               17 ,  17 A through  17 D motor lead wire 
               8  heater lead wire 
               9  heater 
               10  geared motor 
               20  cover 
               21  end plate part 
               22  body part 
               23  seal plate part 
               25  heater lead wire passage 
               26  cover side lead wire support part 
               28  cover side projection 
               29  shaft part 
               30  motor lead wire passage 
               30   a  outlet 
               31  bottom plate part 
               32  case body part 
               33  recessed part 
               34  case side lead wire support part 
               36  first projection 
               37  second projection 
               38  support shaft 
               39  hook mechanism 
               40  opening/closing plate 
               41  flat plate part 
               49  elastic member 
               60  drive chamber 
               61  motor 
               62  rotor 
               63  stator 
               64  terminal block 
               65  gear train 
               66  first gear 
               67  second gear 
               68  drive gear 
               69  sector gear 
               70  flat cable 
               71  first portion 
               72  second portion 
               73  third portion 
               74  fourth portion 
               75  fifth portion 
               76  separated part 
               79  connecting position of motor lead wire with motor 
               80  jig 
               81  vertical plate part 
               82  pedestal part 
               83  stator mounting part 
               84  bending tendency giving member 
               95  connecting position of heater lead wire with heater 
               210  opening part 
               261  flat plate part 
               262  protruded plate part 
               321  through  324  side plate part 
               329  cut-out part formed in side plate part of case 
               330  bottom part 
               331  engaging part 
               351  first plate-shaped projection 
               352  second plate-shaped projection 
               361  lead wire receiving part 
               371  lead wire receiving part 
               631 ,  632  outer stator core 
               633  opening part 
               641  first face 
               642  second face 
             “L” turning center axial line of baffle 
             “L 68 ” turning center axial line of rotor