Patent Publication Number: US-2012025643-A1

Title: Motor with speed reduction mechanism

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application is entitled to the benefit of and incorporates by reference essential subject matter disclosed in International Patent Application No. PCT/JP2010/054352 filed on Mar. 15, 2010 and Japanese Patent Application No. 2009-073529 filed Mar. 25, 2009. 
    
    
     TECHNICAL FIELD 
     The present invention relates to a motor with speed reduction mechanism having a speed reduction mechanism for reducing the speed of rotation of a rotating shaft and outputting the speed-reduced rotation and a controller for controlling the rotation of the rotating shaft. 
     BACKGROUND ART 
     Conventionally, a motor with speed reduction mechanism capable of obtaining a large output in spite of its small size is used as a drive source of a power window device to be mounted on a vehicle such as an automobile and the like. When an operator operates an operation switch provided in a passenger compartment and the like, the motor with speed reduction mechanism is driven in rotation so as to open and close a window glass. It is indispensible to downsize the motor with speed reduction mechanism to be used for the power window device because the motor is mounted in a narrow space such as inside of a door and the like of a vehicle. In this way, it is possible to enhance layout property in any of large and small vehicles. 
     As the motor with speed reduction mechanism like this, for example, a technology disclosed in Japanese Patent Application Laid-Open Publication No. 2008-141912 is known. The motor with speed reduction mechanism disclosed in Japanese Patent Application Laid-Open Publication No. 2008-141912 includes a motor case (yoke) and a gear case, and further includes a board case for holding a control board (controller) for controlling the rotation of a motor shaft (rotating shaft) provided in the motor case. The board case is provided with a connector opening portion (connector junction), and a vehicle-side connector is inserted into the connector opening portion. One end portions (terminals) of conductive members are disposed in the connector opening portion, and the conductive members include a power supply terminal (power supply conductive member) and a ground terminal (ground conductive member) which are larger than the other conductive members. 
     SUMMARY OF THE INVENTION 
     However, according to the motor with speed reduction mechanism disclosed in Japanese Patent Application Laid-Open Publication No. 2008-141912, the power supply terminal and the ground terminal are situated close to each other in the connector opening portion and arranged side by side in its lateral direction, so it is necessary to size up the connector opening portion to some extent in its lateral direction. That is, a sufficient air gap is secured (insulation property is secured) between the power supply terminal and the ground terminal by sizing up the connector opening portion to some extent in its lateral direction, so it is possible to guarantee the stable operation of the motor with speed reduction mechanism for a long period of time. Therefore, in the motor with speed reduction mechanism disclosed in Japanese Patent Application Laid-Open Publication No. 2008-141912, the size of the connector opening portion may cause a problem in downsizing of the motor with speed reduction mechanism. 
     An object of the invention is to provide a motor with speed reduction mechanism improved so as to downsize a connector junction while securing a sufficient air gap between a power supply terminal and a ground terminal. 
     A motor with speed reduction mechanism according to the present invention has a speed reduction mechanism for reducing the speed of rotation of a rotating shaft and outputting the speed-reduced rotation and a controller for controlling the rotation of the rotating shaft, the motor comprising: a motor case; an armature shaft provided in the motor case and forming the rotating shaft; a gear case attached to the motor case; a worm shaft provided in the gear case and coupled with the armature shaft to form the rotating shaft; a worm provided to the worm shaft and forming the speed reduction mechanism; a worm wheel provided in the gear case and meshed with the worm to form the speed reduction mechanism; a connector member attached to the gear case and configured to hold the controller; a connector junction provided to the connector member and having a rectangular shape in cross section; and eight conductive members inserted into the connector member, one end portions of the conductive members being disposed in the connector junction, and the other end portions of the conductive members being electrically connected to the controller, wherein two of the conductive members are respectively used as power supply conductive members, the other six conductive members are respectively used as control conductive members, one end portions of the power supply conductive members are respectively disposed on both sides of the connector junction in longitudinal direction, and one end portions of the control conductive members are disposed between the power supply conductive members, arranged in two rows in longitudinal direction, and arranged in three rows in lateral direction. 
     A motor with speed reduction mechanism according to the present invention has a speed reduction mechanism for reducing the speed of rotation of a rotating shaft and outputting the speed-reduced rotation and a controller for controlling the rotation of the rotating shaft, the motor comprising: a motor case in which one end portion of the rotating shaft is provided; a gear case attached to the motor case and having the other end portion of the rotating shaft provided therein; a worm provided to the other end portion of the rotating shaft and forming the speed reduction mechanism; a worm wheel provided in the gear case and meshed with the worm to form the speed reduction mechanism; a connector member attached to the gear case and configured to hold the controller; a connector junction provided to the connector member and having a rectangular shape in cross section; and eight conductive members inserted into the connector member, one end portions of the conductive members being disposed in the connector junction, and the other end portions of the conductive members being electrically connected to the controller, wherein two of the conductive members are respectively used as power supply conductive members, the other six conductive members are respectively used as control conductive members, one end portions of the power supply conductive members are respectively disposed on both sides of the connector junction in longitudinal direction, and one end portions of the control conductive members are disposed between the power supply conductive members, arranged in two rows in longitudinal direction, and arranged in three rows in lateral direction. 
     In the motor with speed reduction mechanism according to the present invention, each of the power supply conductive members is formed into a flat plate, each of the control conductive members is formed into a needle shape, and one end portions of the power supply conductive members are disposed in the connector junction so that the longitudinal direction of the power supply conductive members becomes parallel with the longitudinal direction of the connector junction. 
     In the motor with speed reduction mechanism according to the present invention, the motor with speed reduction mechanism is a power window motor mounted on a vehicle, one end portions of the power supply conductive members are respectively used as a power supply terminal and a ground terminal, and one end portions of the control conductive members are respectively used as a window automatic opening/closing terminal, a window lifting terminal, a window lowering terminal, an ignition detecting terminal, a serial communication terminal, and a spare terminal. 
     According to the present invention, since two of the power supply conductive members are respectively used as power supply conductive members, the other six power supply conductive members are respectively used as control conductive members, one end portions of the power supply conductive members are respectively disposed on both sides of the connector junction in longitudinal direction, and one end portions of the control conductive members are disposed between the power supply conductive members, arranged in two rows in longitudinal direction, and arranged in three rows in lateral direction, it is possible to separate one end portions of the power supply conductive members from each other. Therefore, it is possible to reduce the connector junction in size while securing a sufficient air gap between one end portions of the power supply conductive members. Further, it is possible to reduce the motor with speed reduction mechanism in size. 
     According to the present invention, since each of the power supply conductive members is formed into a flat plate, each of the control conductive members is formed into a needle shape, and one end portions of the power supply conductive members are disposed in the connector junction so that the longitudinal direction of the power supply conductive members becomes parallel with the longitudinal direction of the connector junction, it is possible to reduce the connector junction in size in lateral direction. 
     According to the present invention, since the motor with speed reduction mechanism is a power window motor mounted on an automobile, one end portions of the power supply conductive members are respectively used as a power supply terminal and a ground terminal, and one end portions of the control conductive members are respectively used as a window automatic opening/closing terminal, a window lifting terminal, a window lowering terminal, an ignition detecting terminal, a serial communication terminal, and a spare terminal, it is possible to reduce the power window device in size, while securing functions necessary as the power window device. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a partial cross-sectional view showing a power window motor according to the first embodiment of the present invention; 
         FIG. 2  is a view of the power window motor of  FIG. 1  seen from the direction of an arrow “A”; 
         FIG. 3  is a perspective view showing the inside of a connector member; 
         FIG. 4  is an enlarged view of a portion “B” circled by a dashed line in  FIG. 3 ; 
         FIG. 5  is a view of the connector member shown in  FIG. 3  seen from the direction of an arrow “C”; 
         FIG. 6  is a view for explaining a procedure of assembling the power window motor; and 
         FIG. 7  is a partial cross-sectional view showing a power window motor according to the second embodiment of the present invention. 
     
    
    
     BEST MODE FOR CARRYING OUT THE INVENTION 
     Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 
       FIG. 1  is a partial cross-sectional view showing a power window motor according to the first embodiment.  FIG. 2  is a view of the power window motor shown in  FIG. 1  seen from the direction of an arrow “A”.  FIG. 3  is a perspective view showing the inside of a connector member.  FIG. 4  is an enlarged view of a portion “B” circled by a dashed line in  FIG. 3 .  FIG. 5  is a view of the connector member shown in  FIG. 3  seen from the direction of an arrow “C”.  FIG. 6  is a view for explaining a procedure of assembling the power window motor. 
     As shown in  FIGS. 1 and 2 , a power window motor  10  as a motor with speed reduction mechanism is used as a drive source of a power window device (not shown) mounted on a vehicle such as an automobile and the like. The power window motor  10  is adapted to drive a window regulator (not shown) to lift up and down a window glass (not shown) provided to a door and the like of a vehicle. Since the power window motor  10  is installed in a narrow space (not shown) formed in a door of a vehicle, the power window motor  10  is formed in a thin shaped with a reduced thickness “D”. 
     The power window motor  10  includes a motor portion  20  and a gear portion  40 , and the motor portion  20  and the gear portion  40  are integrated (made into a unit) by three fastening screws  11 . 
     The motor portion  20  includes a yoke (motor case)  21  which is formed into a bottomed shape so as to have an opening portion  21   a  by pressing (deep-drawing) a steel sheet composed of magnetic material. The outside shape of the yoke  21  has an outer shape which is formed of a pair of arc-shaped surfaces  22  and a pair of flat surfaces  23  connected to each other via the arc-shaped surfaces  22 , and the yoke  21  is substantially oval in cross-section. A pair of magnets  24  is disposed to the corresponding insides of the arc-shaped surfaces  22  in face-to-face relationship with each other, and an armature  25  around which coils (not shown) are wound is disposed inside the respective magnets  24 . The armature  25  is rotatable in the yoke  21 . 
     A bottom portion of the yoke  21  (left side in  FIG. 1 ) is formed into a stepped shape, and provided with a bottomed cylinder portion  21   b  smaller in diameter than a main body portion of the yoke  21 . A first radial bearing  26  is attached to the bottomed cylinder portion  21   b  by press fit, and rotatably supports one end portion (left side in  FIG. 1 ) of an armature shaft  27 . Further, a first thrust bearing  28  is provided to the bottomed cylinder portion  21   b , and a first steel ball  29  is disposed between the first thrust bearing  28  and the armature shaft  27 . As described above, one end portion of the armature shaft  27  is rotatably supported by the bottomed cylinder portion  21   b  via the first radial bearing  26 , the first thrust bearing  28 , and the first steel ball  29 . 
     The armature shaft  27  as a rotating shaft is passed through and fixed to the center of rotation of the armature  25 , and the armature shaft  27  is provided in the yoke  21 . A commutator  30  is provided in the vicinity of the armature  25  on the side of the other end portion (right side in  FIG. 1 ) of the armature shaft  27 , and electrically connected to an end of the coil wound around the armature  25 . A pair of brushes  32  held by a brush holder  31  is in sliding contact with the outer peripheral portion of the commutator  30 , and the brushes  32  are respectively pressed toward the commutator  30  by spring members  33  at a predetermined pressure. Then, when a driving current is supplied to the brushes  32  from a vehicle-mounted battery (not shown) and the like, a rotation force (electromagnetic force) is generated by the armature  25 , and the armature shaft  27  rotates at a predetermined rotation speed and a predetermined rotation torque. 
     The brush holder  31  is formed into a substantially oval shape in accordance with the inside shape of the opening portion  21   a  of the yoke  21 , pressed into and fixed to the opening portion  21   a  so as to be entirely accommodated in the opening portion  21   a . The brush holder  31  includes a second radial bearing  34  in addition to the brushes  32  and the spring members  33 , and the second radial bearing  34  is fixed to a substantially center portion of the brush holder  31 . The second radial bearing  34  rotatably supports the other end portion of the armature shaft  27 . 
     As described above, since the first radial bearing  26 , the first thrust bearing  28 , and the first steel ball  29  are provided to one end portion of the armature shaft  27  and the second radial bearing  34  is provided to the other end portion of the armature shaft  27 , the armature shaft  27 , i.e., the armature  25  can smoothly rotate without generating almost any rotation resistance. 
     The gear portion  40  includes a gear case  50  and a connector member  70  attached to the gear case  50 . 
     The gear case  50  is formed into a bottomed shape by injection molding of a resin material such as plastic and the like, and attached to the opening portion  21   a  of the yoke  21 . A worm shaft  51  as a rotating shaft integrally formed with a worm  51   a  (not shown in detail) at its peripheral portion and a worm wheel  52  having gear teeth (not shown) meshed with the worm  51   a  are rotatably accommodated in the gear case  50 . 
     The worm shaft  51  and the armature shaft  27  are disposed in coaxial relationship with each other, and one end portion of the worm shaft  51  and the other end portion of the armature shaft  27  are coupled with each other via a coupling member  53  so that they can rotate integrally. An elastic member such as rubber and the like (not shown) is attached in the coupling member  53 , and elastically deformed when the worm shaft  51  is coupled with the armature shaft  27 , thereby absorbing an offset of shaft (size error and the like) between the worm shaft  51  and the armature shaft  27 . Further, an annular sensor magnet  54  is attached to the outer periphery side of the coupling member  53 , and the sensor magnet  54  has a Hall IC  55  disposed in confrontation therewith. The sensor magnet  54  and the Hall IC  55  form a rotation sensor for detecting the speed of rotation and the like (rotating states) of the rotating shafts (the armature shaft  27  and the worm shaft  51 ). 
     Both end portions of the worm  51   a  of the worm shaft  51  in its axial direction are rotatably supported by a third radial bearing  56  and a fourth radial bearing  57  provided in the gear case  50 , respectively. Further, a second thrust bearing  58  provided to a bottom portion  50   a  of the gear case  50  is disposed to the other end portion of the worm shaft  51 , and a second steel ball  59  is provided between the second thrust bearing  58  and the worm shaft  51 . The third radial bearing  56 , the fourth radial bearing  57 , the second thrust bearing  58 , and the second steel ball  59  smoothly rotate the worm shaft  51 . As described above, the bottom portion  50   a  rotatably supports the other end portion of the worm shaft  51  via the fourth radial bearing  57 , the second thrust bearing  58 , and the second steel ball  59 . 
     A filling hole  50   b  is provided on the side of the bottom portion  50   a  of the gear case  50 , and the filling hole  50   b  is filled with resin material  60  for adjusting the position of the second thrust bearing  58  in its axial direction. That is, after the power window motor  10  is assembled, the filling hole  50   b  is filled with the melted resin material  60  at a predetermined pressure, thereby moving the worm shaft  51  and the armature shaft  27  in their axial direction via the second thrust bearing  58 , and eliminating plays of the worm shaft  51  and the armature shaft  27  in the axial direction. Here, the melted resin material  60  filled in the filling hole  50   b  is cured for a predetermined period of time under the condition that a predetermined pressure is being applied to the melted resin material  60  filled in the filling hole  50   b.    
     Additionally, not only a method of using the resin material  60  but also a method of having the worm shaft  51  and the armature shaft  27  shift in the axial direction by adjusting an adjusting screw (not shown) which is screwed to the bottom portion  50   a  of the gear case  50  is employed as a method of eliminating the plays of the worm shaft  51  and the armature shaft  27  in the axial direction. 
     A support shaft (not shown) for rotatably supporting the worm wheel  52  is provided in the gear case  50 , and the worm wheel  52  is rotatably provided in the gear case  50 . A pinion  61  as an output shaft is provided at the rotation center of the worm wheel  52  so as to be rotatable with the worm wheel  52 , and meshed with a gear (not shown) formed as a window regulator. The pinion  61  is rotatably supported by the support shaft of the gear case  50  likewise the worm wheel  52 . Therefore, the rotation speeds of the armature shaft  27  and the worm shaft  51  are reduced by the worm  51   a  and the worm wheel  52 , and an output reduced in rotation speed and increased in torque is transmitted from the pinion  61  to the gear of the window regulator. Here, the worm  51   a  and the worm wheel  52  configure the speed reduction mechanism in the present invention. 
     Three engagement projections  62   a ,  62   b , and  62   c  are respectively provided on the front and rear sides of the gear case  50  in  FIG. 1  (only the front side is illustrated in the drawing), and engagement claws  71   a ,  71   b , and  71   c  of the connector member  70  get on the respective engagement projections  62   a ,  62   b , and  62   c  so that the engagement claws  71   a ,  71   b , and  71   c  engage with the respective engagement projections  62   a ,  62   b , and  62   c . Guide convex portions  63   a ,  63   b , and  63   c , which open upward in  FIG. 1  and guide the engagement of the respective engagement claws  71   a ,  71   b , and  71   c  with the respective engagement projections  62   a ,  62   b , and  62   c , are disposed in the vicinity of the respective engagement projections  62   a ,  62   b , and  62   c . Further, single engagement projections  62   d  are respectively disposed to the right and left sides of the gear case  50  in  FIG. 1 , and engagement claws  71   d  of the connector member  70  get on the respective engagement projections  62   d  so that the engagement claws  71   d  engage with the respective engagement projections  62   d.    
     As shown in  FIG. 3 , the connector member  70  is formed into a bottomed shape by injection molding of resin material such as plastic and the like, and includes a main body portion  71  and a connector junction  72 . The connector member  70  is attached to a side portion of the gear case  50  from outside of the worm wheel  52  in its radial direction. 
     The opening side of the main body portion  71  (upper side in the drawing) is formed into a substantially rectangular shape, and three engagement claws  71   a ,  71   b , and  71   c  are integrally provided to a pair of long side portions on the opening side of the main body portion  71 , respectively in confrontation therewith. Each length (projection size) of the engagement claws  71   a ,  71   b ,  71   c  from the long side portions is set so as to be gradually shortened from the near side of the connector junction  72  (on the left side in the drawing) toward the far side of the connector junction  72 , and the engagement claw  71   a  on the near side of the connector junction  72  has a longest size, and the engagement claw  71   c  on the far side of the connector junction  72  has a shortest size. Further, the single engagement claws  71   d  are integrally disposed to a pair of short side portions on the opening side of the main body portion  71  in confrontation therewith. The length (projection size) of each of the engagement claws  71   d  from the short side portions are approximately as long as the length of each of the engagement claws  71   c.    
     The main body portion  71  is configured to hold a control board (controller)  73  (refer to  FIG. 6 ) for controlling the rotation of the rotating shaft (the armature shaft  27  and the worm shaft  51 ) of the power window motor  10 . The main body portion  71  is provided with a pair of board support projections  71   e  fitted with a pair of positioning holes  73   a  provided to the control board  73 , and a pair of board support surface portions  71   f  for supporting the control board  73  on their surfaces. Therefore, it is possible to hold the control board  73  at a predetermined position of the connector member  70  by causing the board support projections  71   e  and the board support surface portions  71   f  to support the control board  73 . Here, a plurality of through holes  73   b  are formed to the control board  73 , and electronic parts, for example, a CPU, a switching device and the like (not shown) other than Hall IC  55  are mounted on the control board  73 . 
     The connector junction  72  is integrally provided to one side portion (on the left side in the drawing) of the main body portion  71  so as to project from the main body portion  71 . The cross section of the connector junction  72  is formed in a substantially rectangular shape, and the inside thereof is hollow. A vehicle-side connector (not shown) is attached to the connector junction  72 . The outer peripheral portion of the connector junction  72  is integrally provided with four guide projections  72   a  extending along the projecting direction of the connector junction  72  as shown in  FIG. 5 , and the guide projections  72   a  are configured to guide a plug of the vehicle-side connector straight. Each of the guide projections  72   a  is formed asymmetrically in the lateral direction (up/down direction in the drawing) of the cross section of the connector junction  72 . Therefore, the vehicle-side connector can be attached to the connector junction  72  in a correct direction. The outer peripheral portion of the connector junction  72  is further integrally provided with a locking projection  72   b , and the locking projection  72   b  is engaged with a locking claw (not shown) of the vehicle-side connector, thereby preventing the vehicle-side connector from being removed from the connector junction  72 . 
     As shown in shaded portions of  FIG. 4 , two plate-like power supply conductive members  74   a  and  74   b  each of which is formed of metal material such as brass and the like excellent in conductivity into a plate, six needle-like control conductive members  75   a ,  75   b ,  75   c ,  75   d ,  75   e , and  75   f  each of which is formed of the same material as the power supply conductive members  74   a  and  74   b , and two motor conductive members  78   a  and  78   b  are inserted by insert-molding into the connector member  70 . The power supply conductive members  74   a  and  74   b  and the control conductive members  75   a ,  75   b ,  75   c ,  75   d ,  75   e , and  75   f  (eight members in total) are inserted into the connector member  70  under the condition that they are bent into a substantially L-shape, and one end portions thereof are disposed inside the connector junction  72 , and the other end portions thereof are electrically connected to the control board  73 . Further, first end portions  78   a   1  and  78   b   1  of the motor conductive members  78   a  and  78   b  are electrically connected to the brushes  32  of the brush holder  31  via conductive wires (not shown), respectively, and second end portions  78   a   2  and  78   b   2  of the motor conductive members  78   a  and  78   b  are electrically connected to the control board  73 , respectively. Further, a symbol  79  denotes an element connecting conductive member, and the element connecting conductive member  79  is used as a terminal for electrically connecting a circuit element (not shown, for example, capacitor and the like) to the control board  73 . 
     As shown in  FIG. 5 , one end portion of the power supply conductive member  74   a  functions as a power supply terminal  76   a , and the power supply terminal  76   a  is electrically connected to a power supply terminal (12V, 24V, and the like) of the vehicle-side connector. One end of the power supply conductive member  74   b  functions as a ground terminal  76   b , and the ground terminal  76   b  is electrically connected to a ground terminal (GND) of the vehicle-side connector. Further, one end portions of the control conductive members  75   a ,  75   b ,  75   c ,  75   d ,  75   e , and  75   f  function as a window automatic opening/closing terminal (AUTO)  77   a , a window lifting terminal (UP)  77   b , a window lowering terminal (DOWN)  77   c , an ignition detecting terminal (IG)  77   d , a serial communication terminal (UART)  77   e , and a spare terminal (non-connected)  77   f , respectively. The control terminals  77   a ,  77   b ,  77   c ,  77   d ,  77   e , and  77   f  are electrically connected to respective control terminals disposed so as to correspond to the vehicle-side connector. 
     The power supply terminal  76   a  and the ground terminal  76   b  are disposed on both sides of the connector junction  72  in a longitudinal direction so that the longitudinal direction of the power supply terminal  76   a  and the ground terminal  76   b  becomes parallel with the longitudinal direction of the connector junction  72 . Additionally, the distance “L” between the power supply terminal  76   a  and the ground terminal  76   b  is set to approximately the same size as the size (thickness “h”) of the connector junction  72  in the lateral direction, and a sufficient air gap is formed therebetween. Note that each thickness of the power supply terminal  76   a  and the ground terminal  76   b  is set to 0.64 mm, and each width thereof is set to 2.30 mm. 
     The control terminals  77   a ,  77   b ,  77   c ,  77   d ,  77   e , and  77   f  are disposed between the power supply terminal  76   a  and the ground terminal  76   b , arranged in three rows at regular intervals along the longitudinal direction of the connector junction  72 , and arranged in two rows at regular intervals along the lateral direction of the connector junction  72 . Note that each of the thickness and the width of each of the control terminals  77   a ,  77   b ,  77   c ,  77   d ,  77   e , and  77   f  is set to 0.64 mm, and each of the cross sections thereof is formed in a square shape. Here, each of the needle-shaped control terminals  77   a ,  77   b ,  77   c ,  77   d ,  77   e , and  77   f  may be formed into a triangle shape, a polygon shape having five or more sides and further a circle shape in cross-section without being limited to a square shape. 
     In this way, the power supply terminal  76   a , the ground terminal  76   b , and each of the control terminals  77   a ,  77   b ,  77   c ,  77   d ,  77   e , and  77   f  are disposed in the connector junction  72 , so that the size of the connector junction  72  in the lateral direction (thickness “h”) is reduced and the connector junction  72  is downsized. Further, the minimum necessary number (six) of the control terminals  77   a ,  77   b ,  77   c ,  77   d ,  77   e , and  77   f  for obtaining functions necessary to the power window device are disposed in the connector junction  72 , so that the height “H” of the power window motor  10  (refer to  FIGS. 1 and 2 ) is reduced by making the size (width “d”) of the connector junction  72  in the longitudinal direction smaller than the thickness “D” of the power window motor  10 . 
     Further, the control terminals  77   a ,  77   b ,  77   c ,  77   d ,  77   e , and  77   f  are arranged in two rows along the lateral direction of the connector junction  72 , and relatively large spaces “S” are formed on the upper and lower sides of the control terminals  77   a ,  77   b ,  77   c ,  77   e , and  77   f , respectively. With the configuration, the moldability of the connector member  70  is secured by making it easy to flow the melted resin when the connector member  70  is insert-molded, while reducing the size (thickness size h) of the connector junction  72  in the lateral direction. 
     Then, a procedure of assembling the power window motor  10  thus configured will be described in detail with reference to the drawings. 
     As shown in  FIG. 6 , the control board  73  mounted with electronic parts such as the Hall IC  55  and the like is prepared and the connector member  70  inserted with the power supply conductive members  74   a  and  74   b , the control conductive members  75   a ,  75   b ,  75   c ,  75   d ,  75   e , and  75   f , and the motor conductive members  78   a  and  78   b  is prepared. Further, a motor assembly with the motor portion  20  and the gear portion  40  being assembled (refer to  FIG. 1 ) is prepared. 
     Then, as shown by an broken arrow ( 1 ) in the drawing, the control board  73  is faced to the opening side of the connector member  70 , the board support projections  71   e  are respectively fitted with the positioning holes  73   a  of the control board  73 , and the control board  73  is placed on the board support surface portions  71   f . At this time, the other end portions of the power supply conductive members  74   a  and  74   b , the other end portions of the control conductive members  75   a ,  75   b ,  75 C,  75   d ,  74   e , and  75   f , and the second end portions  78   a   2  and  78   b   2  of the motor conductive members  78   a  and  78   b  are inserted into the respective through holes  73   b  of the control board  73 . 
     Then, the other end portions of the power supply conductive members  74   a  and  74   b , the other end portions of the control conductive members  75   a ,  75   b ,  75   c ,  75   d ,  75   e , and  75   f , and the second end portions  78   a   2  and  78   b   2  of the motor conductive members  78   a  and  78   b  are electrically connected to respective printed wirings (not shown) of the control board  73  by soldering and the like. In this way, a mounting process of the control board  73  on the connector member  70  is completed. 
     Then, the opening side of the connector member  70  is faced to a side portion of the gear case  50  on which the control board  73  is mounted, and the connector member  70  is gradually approached to the gear case  50 . Thus, in order of broken arrows ( 2 ), ( 3 ), and ( 4 ) shown in the drawing, the engagement claws  71   a ,  71   b , and  71   c  get on the engagement projections  62   a ,  62   b , and  62   c  (refer to  FIG. 1 ) while being guided by the guide convex portions  63   a ,  63   b , and  63   c  and are pushed and widened externally. Then, the engagement claws  71   a ,  71   b , and  71   c  are engaged with the engagement projections  62   a ,  62   b , and  62   c , and the mounting of the connector member  70  on the gear case  50  is completed. 
     At this time, approximately simultaneously with the engagement of the engagement claws  71   c  with the engagement projections  62   c , the engagements claws  71   d  are engaged with the engagement projections  62   d  corresponding to the engagement claws  71   d  (refer to  FIG. 1 ). Further, the first end portions  78   a   1  and  78   b   1  of the motor conductive members  78   a  and  78   b  are electrically connected to the conductive wires corresponding to the brushes  32 . That is, power is supplied to the power window motor  10  from the power supply members  74   a  and  74   b  inserted into the connector member  70  via the control board  73  and the motor conductive members  78   a  and  78   b . In this way, the connector member  70  can be mounted on the gear case  50  with just one touch by engaging the engagement claws  71   a ,  71   b ,  71   c , and  71   d  with the engagement projections  62   a ,  62   b ,  62   c , and  62   d . Accordingly, since it is unnecessary to use screws or the like for attaching the connector member  70  to the gear case  50 , it is possible to simplify a mounting operation, and further realize the reduction in weight of the power window motor  10 . 
     As described above in detail, according to the power window motor  10  of the first embodiment, since the power supply terminal  76   a  and the ground terminal  76   b  are respectively provided to both sides of the connector junction  72  in the longitudinal direction, and the control terminals  77   a ,  77   b ,  77   c ,  77   d ,  77   e , and  77   f  are disposed between the power supply terminal  76   a  and the ground terminal  76   b , arranged in three rows in the longitudinal direction of the connector junction  72 , and arranged in two rows in the lateral direction of the connector junction  72 , the power supply terminal  76   a  can be separated from the ground terminal  76   b . Therefore, it is possible to downsize the connector junction  72  while securing a sufficient air gap between the power supply terminal  76   a  and the ground terminal  76   b . Further, it is possible to downsize the power window motor  10 . 
     Further, according to the power window motor  10  of the first embodiment, since each of the power supply terminal  76   a  and the ground terminal  76   b  is formed into a flat plate, each of the control terminals  77   a ,  77   b ,  77   c ,  77   d ,  77   e , and  77   f  is formed into a needle shape, and the power supply terminal  76   a  and the ground terminal  76   b  are provided in the connector junction  72  so that the longitudinal direction of each of the power supply terminal  76   a  and the ground terminal  76   b  becomes parallel with the longitudinal direction of the connector junction  72 , it is possible to reduce the size (thickness “h”) of the connector junction  72  in the lateral direction. 
     Further, according to the power window motor  10  of the first embodiment, since the power supply terminal  76   a  and the ground terminal  76   b  (two terminals in total) and the control terminals  77   a ,  77   b ,  77   c ,  77   d ,  77   e , and  77   f  (six terminals in total of the window automatic opening/closing terminal, the window lifting terminal, the window lowering terminal, the ignition detecting terminal, the serial communication terminal, and the spare terminal) are provided, it is possible to reduce the power window motor in size while constituting an optimum power window motor  10  having functions necessary as a power window device. 
     Then, the second embodiment of the present invention will be described hereinafter in detail with reference to the drawings. Here, portions having the same function as those of the first embodiment are denoted by the same reference numbers as those of the first embodiment and the detail descriptions thereof are omitted here. 
       FIG. 7  is a partial cross-sectional view showing a power window motor according to the second embodiment of the present invention. 
     As shown in  FIG. 7 , a power window motor  80  according to the second embodiment is different, as compared with the power window motor  10  of the first embodiment described above, in that a single rotating shaft  81  is provided by integrating the armature shaft  27  with the worm shaft  51  and a connector junction  86  opens toward the side opposite to the side where the pinion  61  is disposed (refer to  FIG. 1 ). 
     The rotating shaft  81  passes through and fixed to the center of rotation of the armature  25 . One end (right side in the drawing) of the rotating shaft  81  is disposed inside a yoke  21  and rotatably supported by a bottomed cylinder portion  21   b  of the yoke  21  via a first radial bearing  26 , a first thrust bearing  28 , and a first steel ball  29 . The other end portion (left side in the drawing) of the rotating shaft  81  is provided in a gear case  50  and rotatably supported by a bottom portion  50   a  of the gear case  50  via a fifth radial bearing  82 , a second thrust bearing  58 , and a second steel ball  59 . 
     A worm  81   a , which is meshed with the gear teeth of a worm wheel  52 , is integrally provided to the other end portion of the rotating shaft  81 . A sensor magnet  83  is fixed to a portion of the rotating shaft  81  close to the second radial bearing  34 . The sensor magnet  83  is disposed in face-to-face relationship with a Hall IC  55  that forms a rotation sensor together with the sensor magnet  83 . 
     The connector junction  86  is integrally provided to one side portion of (right side in the drawing) of a main body portion  85  in a connector member  84 . The connector junction  86  is extended in the longitudinal direction of the main body portion  85 , and projected in the lateral direction of the main body portion  85 . However, the amount of projection of the connector junction  86  is suppressed in the lateral direction to be smaller than the thickness of the power window motor  80  (the same thickness size “D” as a power window motor  10 ). 
     The connector junction  86  opens toward the side opposite to the side where the pinion  61  (refer to  FIGS. 1 and 2 ) is disposed, i.e., the front side of the power window motor  80  (back side). The pinion  61  is disposed to face outside of a vehicle, and the connector junction  86  opens toward inside of a passenger compartment (not shown). 
     The power window motor  80  thus configured as mentioned above according to the second embodiment can attain the same advantageous effects of the first embodiment mentioned above. 
     Since the power window motor  80  according to the second embodiment is provided with only the single rotating shaft  81 , the armature shaft  27  and the worm shaft  51  cannot be individually designed as dedicated members, and unlike those of the first embodiment. However, since a coupling member  53  is not necessary, it is possible to reduce the number of parts and the number of assembly steps. Further, in the power window motor  80  according to the second embodiment, since the connector junction  86  opens toward inside of the passenger compartment, a process of connecting a vehicle-side connector with the connector junction  86  can be made easy, and thus the mounting property of the power window motor  80  on the vehicle and the maintenance property of the power window motor  80  can be improved. 
     It is needless to say that the present invention is by no means limited to the above embodiments and can be variously modified within the range which does not depart from the gist of the invention. For example, the above embodiments show that the power supply terminal  76   a  and the ground terminal  76   b  are disposed so that the longitudinal direction of the power supply terminal  76   a  and the ground terminal  76   b  becomes parallel with the longitudinal direction of the connector junction  72  ( 86 ). However, the invention is by no means limited to this configuration, and, for example, the longitudinal direction of the power supply terminal  76   a  and the ground terminal  76   b  may be orthogonal to the longitudinal direction of the connector junction  72  ( 86 ). 
     Further, in each embodiment, the motor with speed reduction mechanism is applied to a power window motor of the power window device. However, the present invention may be applied to a driving source of a sun-roof device and the like without being limited to this device. 
     The motor with speed reduction mechanism is used to drive the window regulator of the power window device mounted on a vehicle such as automobile and the like to lift up and down a window glass. 
     While the present invention has been illustrated and described with respect to a particular embodiment thereof, it should be appreciated by those of ordinary skill in the art that various modifications to this invention may be made without departing from the spirit and scope of the present.