Abstract:
An electrical connector for a flat conductive member includes a housing having a bottom wall, a top wall, a first receiving groove, and a second receiving groove. The first receiving groove and the second receiving groove extend from a first side toward a second side. The connector includes a first terminal disposed in the first receiving groove; a second terminal disposed in the second receiving groove; and a pressing member disposed to be movable between an open position and a closed position for pressing the first terminal and the second terminal. The first terminal includes a first fixing arm portion contacting with the bottom wall, a first movable arm portion contacting with the top wall, and a first connecting portion. The second terminal includes a second fixing arm portion contacting with the bottom wall, a second movable arm portion contacting with the top wall, and a second connecting portion.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    This is a continuation application of a prior application Ser. No. 12/385,233, filed Apr. 2, 2009, pending, which is a continuation application of a prior application Ser. No. 12/010,923, filed Jan. 31, 2008, granted. 
     
    
     BACKGROUND OF THE INVENTION AND RELATED ART STATEMENT 
       [0002]    The present invention relates to an electrical connector for a flat conductor. 
         [0003]    A Flexible Printed Circuit (FPC), a flat cable, and the likes are known as flat conductors. A connector disclosed in Patent Reference is known as an electrical connector that connects the flat conductor to a connection object member, for example, other circuit board. 
       Patent Reference: Japanese Patent Publication No. 11-031561 
       [0004]      FIG. 6  is a perspective sectional view showing a conventional electrical connector.  FIG. 7  is a partial perspective sectional view showing the conventional electrical connector. 
         [0005]    In the connector disclosed in Patent Reference, as shown in  FIGS. 6 and 7 , a plurality of the terminals  51  is held in a housing  52  in a direction perpendicular to a plate surface thereof. The terminal  51  is made to maintain a plate surface of a metal sheet. 
         [0006]    The terminal  51  has an approximate transverse H-shape. Further, each upper arm and lower arm of the terminal  51  is connected at a middle portion thereof in a longitudinal direction thereof. The upper arm elastically inclines and is displaceable as a lever with a connection portion thereof as a fulcrum. The upper arm is provided with a supporting arm  54 A on a right side of a fulcrum portion  53 . 
         [0007]    Further, the upper arm is provided with a contact arm  54 B having a contact portion  54 C with a protrusion shape on a left side thereof. The lower arm is provided with a supporting arm  55 A having a connection portion  55 B on a distal end thereof on a right side of the fulcrum portion  53 . Further, the lower arm is provided with a fixed arm  55 D having a protrusion portion  55 C on a left side. 
         [0008]    The housing  52  is provided with grooves  56  corresponding to the terminals  51 , so that the terminals  51  are inserted into the grooves  56 . The terminals  51  can be inserted from a right side in  FIG. 6 . All of the grooves  56  communicate at a left opening  57  of the housing  52 . Further, the grooves  56  communicate at a right opening  58  of the housing  52 . A flat conductor is inserted between the contact arms  54 B and the fixed arms  55 D from the left opening  57 . Further, the right opening portion  58  is provided with a pressing member  59  to be freely rotatable. 
         [0009]    The pressing member  59  is made of an electrical insulation material similar to that of the housing  52 . As shown in  FIGS. 6 and 7 , the pressing member  59  has an operation portion  59 A, a rotation guided portion  59 B, a pressing portion  59 C that functions as a cam, and a shaft portion  59 D. 
         [0010]    The operation portion  59 A protrudes from the right opening  58  of the housing  52  to be in a lever shape. The rotation guided portion  59 B has a section having a circular arc shape and is rotated to guide in a recessed portion. The recessed portion is provided to correspond to the supporting arm  55 A of the lower arm of the terminal  51 . When the pressing member  59  is rotated to be at a close position in a clockwise direction in the operation portion  59 A, the pressing portion  59 C presses the supporting arm  54 A of the upper arm of the terminal  51  upwardly. 
         [0011]    The shaft portion  59 D is provided to protrude from both ends of a width direction of the pressing member  59 . The shaft portion  59 D has a pivot on an extension of a centerline of the circular arc of the rotation guided portion  59 B. The shaft portion  59 D is supported to be movable and guided along with the rotation guided portion  59 B when the pressing member  59  is rotated. 
         [0012]    A taper groove portion  61  and a step groove portion  62  are provided inside of a sidewall  60  of the housing. The taper groove portion  61  and the step groove portion  62  are adjacent to each other. Further, a slit  64  is provided in each border portion of the sidewalls  60  and a top wall  63  of the housing. The slit  64  enables the sidewall  60  to elastically bend outwardly. The pressing member  59  is incorporated into the housing  52  from a right side in  FIG. 6  and from an upper right side in  FIG. 7 . 
         [0013]    At that time, the shaft portion  59 D elastically deforms to bend the sidewall  60  outwardly to be accommodated in the step groove portion  62  while moving the taper groove portion  61  of the sidewall  60 . When the shaft portion  59 D is accommodated in the step groove portion  62 , the elastic deformation to bend is released. Accordingly, the shaft portion  59 D engages with the step groove portion  62  and becomes hard to disengage upon receiving an external force. 
         [0014]    As described above, in the connector disclosed in Patent Reference, the shaft portion provided on both side edges of the pressing member engages with the step groove portion of the housing in an arrangement direction of the terminals, so that the pressing member does not come off. 
         [0015]    When the number of the terminals increases, a width dimension between both side edges of the pressing member increases and becomes easier to bend. In a range between the both side edges, the recessed portion provided in the supporting arm of the terminal prevents the pressing member from coming off to some extent. 
         [0016]    However, when the pressing member is bent as described above due to an external force, the rotation guided portion of the pressing member easily protrudes from the recessed portion. Accordingly, solely the shaft portion has to be depended on to prevent the pressing member from coming off. As a result, the shaft portion may be overloaded; an engagement depth with the step groove portion of the shaft portion may become small due to the bend described above; or the sidewall may open due to a large force from the shaft portion, thereby further decreasing the engagement depth. 
         [0017]    When one of the situations described above occurs, the shaft portion may break or the pressing member may come off. That is, when the pressing member is opened and closed, or when an inadvertent external force is applied to the pressing member, the pressing member may come off. Accordingly, the flat conductor can lose contact with the terminal; and therefore, a function as the connector can be lost. 
         [0018]    In view of the problems described above, an object of the present invention is to provide an electrical connector for a flat conductor, in which it is possible surely prevent a pressing member from coming off without enlarging a size of the electrical connector. Another object of the present invention is to provide an electrical connector that prevents a pressing member from coming off even though the number of terminals increases. 
         [0019]    Further objects and advantages of the invention will be apparent from the following description of the invention. 
       SUMMARY OF THE INVENTION 
       [0020]    In order to attain the objects described above, according to a first aspect of the present invention, an electrical connector for a flat conductor includes a terminal maintaining a flat surface of a metal sheet. The terminal includes a fixing arm portion and a movable arm portion each having an arm shape. The fixing arm portion and the movable arm portion extend in a same direction. The fixing arm portion and the movable arm portion are connected each other through a joining portion in a middle portion thereof in a longitudinal direction thereof to be an integrated member. Further, the fixing arm portion is held to fix through the housing. 
         [0021]    The movable arm portion has a pressing portion on one end portion side thereof and a pressure receiving portion on the other end portion side thereof in a longitudinal direction thereof. When a pressing member moves in a specific direction, a cam portion of the pressing member presses the pressure receiving portion of the movable arm portion to be displaced on a surface including a plane of the terminal through a movement of a specific amount. Further, when the pressure receiving portion is displaced, the movable arm portion makes an angular displacement like a lever with the joining portion as a fulcrum to displace the pressing portion, so that the pressing portion applies pressure to the flat conductor. 
         [0022]    In the electrical connector for a flat conductor described above, according to the first aspect of the present invention, a plurality of the terminals is arranged in a direction perpendicular to the flat surface of the terminals. The terminals include at least a first terminal and a second terminal. The first terminal and the second terminal are attached to the housing through press-fitting from opposite directions of the housing in a longitudinal direction. 
         [0023]    The first terminal has a raised portion on a top edge portion of a fixing arm portion facing a pressure receiving portion of a movable arm portion thereof. Further, the first terminal is provided with a rotation guide portion to rotate and guide the cam portion of the pressing member while regulating a movement of the pressing member in a press-fit direction of the second terminal at the raised portion. 
         [0024]    In the second terminal, a top edge portion of the fixing arm portion thereof is provided to be a straight portion extending in a longitudinal direction at a position corresponding to the rotation guide portion of the first terminal. 
         [0025]    The cam portion comprises a small radius cam portion and a large radius cam portion. When the pressing member is at an open position, the small radius cam portion contacts or forms a space with the pressure receiving portions of the movable arm portions of the first and the second terminals. When the pressing member is at a close position, the large radius cam portion has a cam radius larger than that of the small radius cam portion, and applies a contact pressure against the pressure receiving portion. 
         [0026]    A space is formed between a maximum rise position of the raised portion of the first terminal and a bottom edge portion of the movable arm portion that faces the raised portion, so that the cam portion can be inserted over with respect to a terminal arrangement direction. Further, when a space is formed between the bottom edge portion of the movable arm portion that faces the straight portion of the fixing arm portion of the second terminal and the cam portion, the space becomes smaller than a maximum rise height of the raised portion with respect to the terminal arrangement direction. 
         [0027]    When the electrical connector for a flat conductor is assembled, the first terminal, the pressing member, the second terminal are attached to the housing in sequence. 
         [0028]    More specifically, first, the first terminal is pressed fit from a pressing portion side of the first terminal in a longitudinal direction of the first terminal. Further, the cam portion of the pressing member is inserted over in a press-fit direction of the first terminal between the movable arm portion of the first terminal and the raised portion of the fixing arm portion and the pressing member is attached. 
         [0029]    In the first aspect of the present invention, when the cam portion of the pressing member is inserted over, the space is formed between the maximum rise position of the raised portion of the first terminal and the bottom edge portion of the movable arm portion that faces the raised portion, so that the cam portion can be inserted over with respect to the terminal arrangement direction. Accordingly, the pressing member can be inserted over between the movable arm portion of the first terminal and the raised portion of the fixing arm portion without problems. 
         [0030]    After the pressing member is arranged, the second terminal is pressed fit into the housing from the pressure receiving portion side of the second terminal in an opposite direction of the press-fit direction of the first terminal in a terminal longitudinal direction. 
         [0031]    In the connector for a flat conductor assembled as described above, an upward movement of the cam portion corresponding to the second terminal is regulated through the movable arm portion of the second terminal. Accordingly, an upward movement of the first terminal is also regulated. 
         [0032]    Further, when the space is formed between the bottom edge portion of the movable arm portion that faces the straight portion of the fixing arm portion of the second terminal and the cam portion of the pressing member, the space becomes smaller than the maximum rise height of the raised portion of the first terminal with respect to a terminal arrangement direction. 
         [0033]    Accordingly, even though the pressing member is lifted due to an external force, the cam portion corresponding to the first terminal cannot be above the raised portion. Thus, the cam portion corresponding to the first terminal does not come off. Accordingly, a coming off of the cam portion corresponding to the second terminal is also prevented. As a result, the pressing member is prevented from coming off from the housing. 
         [0034]    According to a second aspect of the present invention, in an electrical connector for a flat conductor, a plurality of terminals is arranged in a direction perpendicular to a flat surface of the terminals. The terminals include at least a first terminal and a second terminal. 
         [0035]    The first terminal and the second terminal are pressed fit into a housing from opposite directions thereof each other in a longitudinal direction thereof. Further, the first terminal has a raised portion in a top edge portion of a fixing arm portion that faces a pressure receiving portion of a movable arm portion. 
         [0036]    A rotation guide portion is provided in the raised portion to rotate to guide a cam portion of a pressing member while regulating a movement of the pressing member in a press-fit direction of the second terminal. 
         [0037]    In the second terminal, a top edge portion of a fixing arm portion thereof is provided to be a straight portion extending in a longitudinal direction thereof at a position corresponding to the rotation guide portion of the first terminal. 
         [0038]    The cam portion comprises a small radius cam portion and a large radius cam portion. When the pressing member is at an open position. the small radius cam portion provides a contact or a space against the pressure receiving portions of the movable arm portions of the first and the second terminals. When the pressing member is at a close position, the large radius cam portion has a cam radius larger than that of the small radius cam portion and applies contact pressure against the pressure receiving portion. 
         [0039]    A space is formed between a maximum rise position of the raised portion of the first terminal and a bottom edge portion of the movable arm portion that faces the raised portion, so that the cam portion can be inserted over with respect to a terminal arrangement direction. Further, a space is formed between the bottom edge portion of the movable arm portion that faces the straight portion of the fixing arm portion of the second terminal and the maximum rise position of the raised portion of the first terminal, so that the cam portion cannot be passed through with respect to the terminal arrangement direction. 
         [0040]    In the electrical connector for a flat conductor with the configuration described above, the cam portion corresponding to the first terminal cannot pass through a space formed between the bottom edge portion of the movable arm portion that faces the straight portion of the fixing arm portion of the second terminal and the maximum rise position of the raised portion of the first terminal. Accordingly, it is possible to prevent the cam portion of the pressing member from coming off, and the pressing member from being detached from the housing. 
         [0041]    In the electrical connector for a flat conductor with the configuration described above, each cam portion of the pressing member is provided to be identical in a shape and a dimension at a position at which a section thereof on a surface parallel to the flat surface of the terminal corresponds to the position of the first terminal and the second terminal, respectively. 
         [0042]    Further, the top edge portions of the fixing arm portion of the first and the second terminals are provided at the same position in a top-to-bottom direction in which the fixing arm portion and the movable arm portion face each other. The second terminal is provided so that the bottom edge portion of the movable arm portion of the second terminal is positioned below the bottom edge portion of the movable arm portion of the first terminal in the top-to-bottom direction. Accordingly, the electrical connector for a flat conductor is practicable. 
         [0043]    Further, in the electrical connector for a flat conductor with the configuration described above, in the first and second aspects of the present invention, the first and the second terminals are provided so that each of the bottom edge portions of the movable arm portions and the top edge portions of the fixing arm portions are in the same position in a top-to-bottom direction. 
         [0044]    The top-to-bottom direction is a facing direction of the fixing arm portion and the movable arm portion. Further, when the pressing member is at an open position, the cam portion of the pressing member in a top-to-bottom direction at a section on a surface parallel to a flat surface of the second terminal becomes larger than the corresponding dimension of the cam portion in the top-to-bottom direction at a position of the first terminal. Accordingly, the electrical connector for a flat conductor is practicable. 
         [0045]    It is preferred that a mix of the first and the second terminals are distributed and arranged in an arrangement direction of the terminals and held through the housing. Accordingly, the first and the second terminals are arranged over all in a terminal arrangement direction. Further, it is attempted that the cam portion of the pressing member is prevented from coming off in an entire arrangement direction; therefore, an effect to prevent the pressing member from coming off will be improved. 
         [0046]    Further, in the first and second aspects of the present invention, it is preferred that the pressure receiving portion of the movable arm portion of the first terminal is straight, and the pressure receiving portion of the movable arm portion of the second terminal is recessed. 
         [0047]    As described above, the pressure receiving portion of the movable arm portion of the second terminal is recessed. Accordingly, the cam portion corresponding to the second terminal engages with the pressure receiving portion having a recessed shape. Thus, the cam portion corresponding to the second terminal can be positioned in a terminal longitudinal direction. 
         [0048]    Further, the first and the second terminals are pressed fit each other from the opposite directions, which can cause a deviation in a terminal longitudinal direction or an assembly error. However, the pressure receiving portion of the movable arm portion of the first terminal is straight, so that the movable arm portion is displaced upwardly through the pressure from the cam portion without problems even though relative positions of the cam portion and the pressure receiving portion are slightly out of alignment. 
         [0049]    In the present invention, when the connector is assembled, the cam portion of the pressing member is inserted over between the movable arm portion and the fixing arm portion of the first terminal, so that the pressing member is incorporated into the housing. 
         [0050]    Further, after the pressing member is arranged, the movable arm portion of the second terminal regulates an upward movement of the cam portion of the pressing member, and the raised portion of the first terminal regulate a movement of the cam portion in the press-fit direction of the second terminal. Accordingly, the cam portion does not come off and the pressing member is prevented from coming off from the housing. 
         [0051]    Further, the first terminal and the second terminal prevent the cam portion from coming off and a separate member is not required to prevent the cam portion from coming off. Thus, the connector is not enlarged. 
         [0052]    Further, a mix of the first and the second terminals is distributed and arranged in a terminal arrangement direction, and the first and the second terminals are arranged over all in the terminal arrangement direction, so that the cam portion is prevented from coming off. Accordingly, an effect to prevent the pressing member from coming off will be improved. 
         [0053]    Specifically, when the number of the terminals is large and a width of the pressing member in the terminal arrangement direction is large, the flexure of the pressing member is to effectively prevent the pressing member from coming off. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0054]      FIGS. 1(A) and 1(B)  are views showing an electrical connector for a flat conductor according to a first embodiment of the present invention, wherein  FIG. 1(A)  is a plan view thereof, and  FIG. 1(B)  is a front view thereof; 
           [0055]      FIGS. 2(A) to 2(C)  are views showing the electrical connector for a flat conductor according to the first embodiment of the present invention, wherein  FIG. 2(A)  is a sectional view taken along a line  2 (A)- 2 (A) in  FIG. 1(B) ,  FIG. 2(B)  is a sectional view taken along a line  2 (B)- 2 (B) in  FIG. 1(B) , and  FIG. 2(C)  is a sectional view taken along a line  2 (C)- 2 (C) in  FIG. 1(B) ; 
           [0056]      FIGS. 3(A) to 3(D)  are views showing the electrical connector for a flat conductor according to the first embodiment of the present invention, wherein  FIGS. 3(A)  and  3 (B) are sectional views thereof at a position of a first terminal in a terminal arrangement direction, and  FIGS. 3(C) and 3(D)  are sectional views thereof at a position of a second terminal in the terminal arrangement direction; 
           [0057]      FIGS. 4(A) and 4(B)  are views showing the electrical connector for a flat conductor according to the first embodiment of the present invention, wherein  FIG. 4(A)  is a view showing a top-to-bottom dimension of a space formed between a cam portion and the first terminal after a pressing member is attached, and  FIG. 4(B)  is a view showing a top-to-bottom dimension of a space formed between the cam portion and the second terminal after the second terminal is attached; 
           [0058]      FIG. 5  is a sectional view of an electrical connector at a position of a second terminal in a terminal arrangement direction and corresponding to  FIG. 2(B)  according to a second embodiment of the present invention; 
           [0059]      FIG. 6  is a perspective sectional view showing a conventional electrical connector; and 
           [0060]      FIG. 7  is a partial perspective sectional view showing the conventional electrical connector. 
       
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
       [0061]    Hereunder, embodiments of the present invention will be explained with reference to the accompanying drawings. 
       First Embodiment 
       [0062]      FIGS. 1(A) and 1  electrical (B) are views showing an electrical connector for a flat conductor according to a first embodiment of the present invention. More specifically,  FIG. 1(A)  is a plan view of the electrical connector, and  FIG. 1(B)  is a front view of the electrical connector. 
         [0063]    As shown in  FIGS. 1(A) and 1(B) , in an electrical connector  1  for a flat conductor, a plurality of terminals made through maintaining a flat surface of a metal sheet is arranged at a specific interval in a direction perpendicular to a flat surface of the terminal. The two different kinds of terminals are provided; that is, first terminals  10  and second terminals  20 . 
         [0064]    As shown in  FIGS. 1(A) and 1(B) , the first terminals  10  and the second terminals  20  are arranged alternately in a housing  30  in a longitudinal direction thereof. The housing  30  has an outer shape of an approximate rectangular solid. Further, pressing members  40 , to be described below, are attached to the housing  30  to be freely rotatable. The pressing members  40  are provided to contact the first terminals  10  and the second terminals  20  to a flat conductor. Hereinafter, for convenience of explanation, the first terminal  10  can be referred to as the “terminal  10 ”, and the second terminal  20  as the “terminal  20 ”. 
         [0065]      FIGS. 2(A) to 2(C)  are views showing the electrical connector for a flat conductor according to the first embodiment of the present invention. More specifically,  FIG. 2(A)  is a sectional view taken along a line  2 (A)- 2 (A) in  FIG. 1(B)  and shows a section pf the electrical connector  1  at a position of the first terminal  10  in a terminal arrangement direction.  FIG. 2(B)  is a sectional view taken along a line  2 (B)- 2 (B) in  FIG. 1(B)  and shows a section at a position of the second terminal  20  in the direction.  FIG. 2(C)  is a sectional view taken along a line  2 (C)- 2 (C) in  FIG. 1(B)  and shows a section in an end portion position outside of a terminal arrangement range in the direction. 
         [0066]    As shown in  FIGS. 2(A) to 2(C) , the pressing member  40  is situated at an open position. Here, the “open position” means a position in which the pressing member  40  rises in a height direction of the housing  30  so that the flat conductor can be inserted inside of the housing  30 . 
         [0067]    The housing  30  has a rectangular section and extends in a direction perpendicular to a sheet surface. Further, the housing  30  is formed of an insulation member and is provided with receiving grooves  31  and  32  to accommodate the two kinds of the terminals; the terminals  10  and  20 , respectively. 
         [0068]    Each of the receiving grooves  31  and  32  has a slit shape that extends to be parallel to a sheet surface within an inside width (inside width in a direction perpendicular to a sheet surface) according to a plate thickness of the terminals  10  and  20 , respectively. 
         [0069]    Further, each of the receiving grooves  31  and  32  pierces the housing  30  left to right as shown in  FIGS. 2(A) and 2(B) . All the receiving grooves  31  and  32  communicate with each other in a right half portion of the housing  30  in an area covering from a middle portion in a top-to-bottom direction to an upper portion and a pressing member rotation space  33  that is open upwardly is formed. 
         [0070]    Further, all the receiving grooves  31  and  32  communicate in a left half portion of the housing  30  in a middle portion of a top-to-bottom direction and a flat conductor insertion space  34  that is open to left is formed. Accordingly, the receiving grooves  31  and  32  are formed in a portion along an inside surface of a housing bottom wall  35  and a top wall  36  inside of the housing  30 , respectively. A top wall  36  is positioned in a left half portion. 
         [0071]    The terminals  10  and  20  are formed through maintaining flat surfaces of metal sheets as described above. As shown in  FIGS. 2(A) to 2(C) , outer shapes of the terminals  10  and  20  are approximate transverse H shape. The terminals  10  and  20  have fixing arm portions  11  and  21  and movable arm portions  12  and  22 , respectively. 
         [0072]    In the embodiment, the fixing arm portions  11  and  21  are positioned on the down side. The movable arm portions  12  and  22  are positioned above and substantially parallel to the fixing arm portions  11  and  21 , respectively. The fixing arm portions  11  and  21  and the movable arm portions  12  and  22  are connected through joining portions  13  and  23 , respectively, in a middle portion of a longitudinal direction to be an integrated member. 
         [0073]    The first terminal  10  has a contact portion  11 A and a connection portion  11 B. The contact portion  11 A having a protrusion shape is provided to face the movable arm portion  12  on a left end of the fixing arm portion  11  extending near a left end of the housing  30 . The connection portion  11 B is provided on a right end protruding outwardly from the housing  30 . 
         [0074]    Further, the fixing arm portion  11  of the first terminal  10  has a protrusion portion  11 C and a cam guide portion  11 D. The protrusion portion  11 C is provided on a right side of the joining portion  13 . The cam guide portion  11 D is formed in a groove shape between the protrusion portion  11 C and the connection portion  11 B. 
         [0075]    In the embodiment, a groove bottom portion of the cam guide portion  11 D forms a straight line portion and has rounded portions on both sides. A portion from the groove bottom portion to the connection portion  11 B through the rounded portion on the right side of the cam guide portion  11 D constitutes a raised portion  11 E. 
         [0076]    A rotation guide portion  11 E- 1  is formed in the raised portion  11 E to rotate to guide a cam portion  43  of the pressing member  40 , as to be described below. Further, the rotation guide portion  11 E- 1  also plays a role in regulating a movement of the pressing member  40  to a right direction. 
         [0077]    The connection portion  11 B is provided in a portion that protrudes outwardly from the housing  30  and extends downwardly. Further, a fixed groove  11 F to fit into a right end portion of the bottom wall  35  of the housing is provided. 
         [0078]    The movable arm portion  12  of the first terminal  10  is connected with the fixing arm portion  11  through the joining portion  13 . Further, the movable arm portion  12  of the first terminal  10  extends left to right with respect to a position of the joining portion  13 . On a left end of the movable arm portion  12 , a pressing portion  12 A is provided at a position corresponding to the contact portion  11 A of the fixing arm portion  11  and protrudes to the left end to face the contact portion  11 A. 
         [0079]    In the embodiment, the movable arm portion  12  has a pressure receiving portion  12 B near a right end of the movable arm portion  12  in a straight portion that faces the raised portion  11 E of the fixing arm portion  11 . A bottom edge of the position that faces the cam guide portion  11 D of the fixing arm portion  11  constitutes a straight portion. 
         [0080]    The first terminal  10  is pressed into the receiving groove  31  of the housing  30  from a right end side thereof. The fixing arm portion  11  is accommodated in the receiving groove  31  on the bottom wall  35  side of the housing  30 , while the movable arm portion  12  is accommodated in the receiving groove  31  on a side of the top wall  36 . 
         [0081]    In the embodiment, the bottom edge of the fixing arm portion  11  contacts with an upper face of the bottom wall  35  of the housing  30 . The fixed groove  11 F provided in the connection portion  11 B fits into a right end portion of the bottom wall  35  of the housing to fix the fixing arm portion  11  securely. On the other hand, the top edge of the movable arm portion  12  bites into the top wall  36  of the housing  30  in a narrow range at a position P 1  corresponding to the joining portion  13  in a terminal longitudinal direction. 
         [0082]    Accordingly, the joining portion  13  can function as a fulcrum. 
         [0083]    In the embodiment, in the other ranges, a space is formed between the top edge of the movable arm portion  12  and a lower surface of the top wall  36  of the housing  30 . Accordingly, the movable arm portion  12  can work as a lever at the fulcrum. Thus, the movable arm portion  12  is elastically displaceable in a top-to-bottom direction while supported in an inner wall surface of a groove width direction of the receiving groove  31  in a plate thickness direction of the movable arm portion  12 . A part of the movable arm portion  12  that is on a right side of the joining portion  13  enters the pressing member rotation space  33  in which no top wall  36  of the housing  30  exists. 
         [0084]    In the embodiment, the fixing arm portion  21  of the second terminal  20  extends to a left side of the joining portion  23 . Further, a distal portion of the fixing arm portion  21  protrudes outwardly from the housing  30 . The terminal  20  has a connection portion  21 B outside of the housing and a contact portion  21 A between the connection portion  21 B and the joining portion  23 . 
         [0085]    The connection portion  21 B has a shape similar to a shape of a left-right reversal of the connection portion  11 B of the first terminal  10 . Further, the connection portion  21 B is provided with a fixed groove  21 F that is fitted into a left end portion of the bottom wall  35  of the housing  30 . The contact portion  21 A is positioned on a right side of the contact portion  11 A of the first terminal  10 . 
         [0086]    A top edge of a part of the fixing arm portion  21  that is on the right side of the joining portion  23  facing the movable arm portion  22  through a free edge constitutes a straight edge, a part of which provides a cam guide portion  21 D. The cam guide portion  21 D guides and supports a cam portion  44  of the pressing member  40 , to be described later. That is, the top edge of the fixing arm portion  21  is provided as a straight portion at a position corresponding to the rotation guide portion  11 E- 1  of the first terminal  10 . 
         [0087]    In the embodiment, the top edge of the fixing arm portion  21  and a top edge of the fixing arm portion  11  of the first terminal  10  are provided in the same position in a top-to-bottom direction. The top-to-bottom direction is a facing direction of the fixing arm portions  11  and  21  and the movable arm portions  12  and  22 , respectively. 
         [0088]    The movable arm portion  22  of the second terminal  20  is connected with the fixing arm portion  21  through the joining portion  23 . Further, the movable arm portion  22  of the second terminal  20  extends left to right with respect to a position of the joining portion  23 . A part of the movable arm portion  22  on the left side of the joining portion  23  extends shorter than the case of the first terminal  10 . A left end of the movable arm portion  22  has a pressing portion  22 A. 
         [0089]    In the embodiment, the pressing portion  22 A protrudes against the contact portion  21 A of the fixing arm portion  21 . A part of a top edge of the movable arm portion  22  on the left side of the joining portion  23  bites into the top wall  36  of the housing  30  in a narrow range at a position P 2  corresponding to the joining portion  23  in a terminal longitudinal direction. Accordingly, the joining portion  23  is assured to function as a fulcrum. 
         [0090]    In the other ranges, a space is formed between the top edge of the movable arm portion  22  and a lower surface of the top wall  36  of the housing  30 . Accordingly, the movable arm portion  22  can work as a lever at the fulcrum. Thus, the movable arm portion  22  can be elastically displaced in the other ranges in a top-to-bottom direction. Further, a pressure receiving portion  22 B having a recessed shape is provided in a part of the movable arm portion  22  on a right end portion on a right side of the joining portion  23 . 
         [0091]    More specifically, the pressure receiving portion  22 B is provided in a portion corresponding to a rotation center  44 A of the cam portion  44 , to be described below, in a longitudinal direction of the movable arm portion  22 . A bottom edge near the pressure receiving portion  22 B of the movable arm portion  22  of the second terminal  20  is provided below a bottom edge near the pressure receiving portion  12 B of the movable arm portion  12  of the first terminal  10  in a top-to-bottom direction. 
         [0092]    As compared to the first terminal  10 , the second terminal  20  having the shape described above has a transverse H-shape as a whole and is similar to the first terminal  10 . The second terminal  20  differs from the first terminal  10  in the following points; the second terminal  20  is attached to the housing  30  from a left side; the contact portion  21 A of the fixing arm portion  21  and the pressing portion  22 A of the movable arm portion  22  are positioned to approach the joining portion  23 , respectively; the cam guide portion  21 D of the fixing arm portion  21  is provided to be straight; the pressure receiving portion  22 B of the movable arm portion  22  is provided to be in a recessed shape; and a bottom edge near the pressure receiving portion  22 B of the movable arm portion  22  is provided below a bottom edge near the pressure receiving portion  12 B of the movable arm portion  12  of the first terminal  10 . 
         [0093]    The pressing member  40  is formed of an insulation member such as a resin or the like. The pressing member  40  is provided to extend outwardly from an inside of the housing shown in  FIGS. 2(A) to 2(C) . Further, the pressing member  40  has a width that covers an arrangement range of the terminals  10  and  20  in a direction perpendicular to a sheet surface; that is, a terminal arrangement direction. 
         [0094]    In the embodiment, the pressing member  40  has groove portions  41  and  42  having slit shapes at a position corresponding to the terminals  10  and  20 , respectively, in an approximately middle position inside of the housing  30  in the arrangement direction. The groove portions  41  and  42  are parallel to a sheet surface and allow the movable arm portions  12  and  22  of the terminals  10  and  20  to pierce through the groove portions  41  and  42 , respectively. The cam portions  43  and  44  are provided in the groove portions  41  and  42  in the edge portion position of the pressing member  40 , respectively. The cam portions  43  and  44  connect the facing inner wall surfaces of the groove portions  41  and  42  (inner wall surfaces facing each other in an arrangement direction), respectively. Each of the cam portions  43  and  44  has a small radius cam portion and a large radius portion when the pressing member  40  is at an open position as shown in  FIGS. 2(A) and 2(B) . 
         [0000]    In the embodiment, each section of the cam portions  43  and  44  is an oval shape having long sideways. 
         [0095]    As shown in  FIGS. 2(A) and 2(B) , a distance from each of a rotation center  43 A and the rotation center  44 A, to be described below, to a top edge is the small radius cam portion, while a distance from the rotation centers to a left end is the large radius cam portion. 
         [0096]    When the small radius cam portions of the cam portions  43  and  44  are upward, a space is formed between the cam portions  43  and  44  and the pressure receiving portion  12 B and  22 B, respectively. That is, when the pressing member  40  is at an open position, a space is formed between the cam portions  43  and  44  and the movable arm portions  12  and  22 , respectively. 
         [0097]    As shown in  FIGS. 2(A) and 2(B) , a distance from the left end to the right end of each of the cam portions  43  and  44  is larger than a space formed between the cam guide portions  11 D and  21 D and the pressure receiving portions  12 B and  22 B, respectively. That is, when the pressing member  40  is at a close position, the large radius portions apply contact pressure to the pressure receiving portions  12 B and  22 B. 
         [0098]    In the embodiment, when the pressing member  40  is at an open position, a space is to be formed between the cam portions  43  and  44  and the movable arm portions  12  and  22 , respectively. When the pressing member  40  is at an open position, the cam portions  43  and  44  and the movable arm portions  12  and  22  can contact each other, respectively, as far as the contact pressure is not generated. 
         [0099]    The cam portion  43  and the cam portion  44  are identical in shapes and dimensions. The cam portion  43  corresponds to the first terminal  10 , while the cam portion  44  corresponds to the second terminal  20 . That is, the cam portion  43  corresponding to the first terminal  10  and the cam portion  44  corresponding to the second terminal  20  have the same cam displacement amounts. 
         [0100]    In the embodiment, the cam portions  43  and  44  have a common rotation axial line. The common rotation axial line extends in a direction perpendicular to a sheet surface in the rotation centers  43 A and  44 A that are centers of a right side half circle portion shown in  FIGS. 2(A) and 2(B) . The pressure receiving portions  12 B and  22 B of the terminals  10  and  20  receive pressures from the cam portions  43  and  44 , respectively, through a rotation operation of the pressing member  40  to a close position indicated by a two-dot hidden line in  FIGS. 2(A)  and (B). 
         [0101]    Accordingly, the pressure receiving portions  12 B and  22 B of the terminals  10  and  20  are elastically displaced upwardly according to the cam displacement amounts. The elastic displacements of the pressure receiving portions  12 B and  22 B provide elastic displacements of the pressing portions  12 A and  22 A downwardly, respectively, through generating displacements in which the movable arm portions  12  and  22  incline as levers with the joining portions  13  and  23  as fulcrums, respectively. 
         [0102]    As shown in  FIG. 2(   c ), on both ends in a direction perpendicular to a sheet, the pressing member  40  is provided with a side edge rotation portion  45  having an approximate rectangular section at a position to correspond to the cam portions  43  and  44  in the pressing member  40  with respect to a terminal arrangement direction, i.e., outside of a range corresponding to the terminal arrangement range. 
         [0103]    In the embodiment, a rotation center  45 A of the side edge rotation portion  45  rotates along a rotation of the pressing member  40  and has a common rotation axial line with the rotation centers  43 A and  44 A of the cam portions  43  and  44 , respectively. 
         [0104]    When the pressing member  40  is at an open position, the side edge rotation portion  45  is sized in a top-to-bottom direction so that the cam portion  43  of the pressing member  40  will not be above the raised portion  11 E of the first terminal  10  even though the pressing member  40  at an open position is lifted to an upper direction. 
         [0105]    The electrical connector  1  with the configuration described above is assembled as follows.  FIGS. 3(A) to 3(D)  are views showing the electrical connector  1  for a flat conductor according to the first embodiment of the present invention. More specifically,  FIGS. 3(A) and 3(B)  are sectional views thereof at a position of the first terminal  10  in a terminal arrangement direction.  FIGS. 3(C) and 3(D)  are sectional views thereof at a position of the second terminal  20  in the terminal arrangement direction. 
         [0106]    First, when the connector  1  is assembled, a plurality of the first terminals  10  passes the pressing member rotation space  33  of the housing  30 , and is pressed from the pressing portion  12 A side to fit into the receiving grooves  31  to be attached to the housing  30  in a terminal longitudinal direction. That is, the first terminal  10  is pressed into the receiving groove  31  from a right side shown in  FIG. 3(A) . 
         [0107]    As a result, the fixed groove  11 F of the first terminal  10  is fitted into a right end portion of the bottom wall  35  of the housing  30 . Further, a top edge of the movable arm portion  12  bites into the top wall  36  of the housing  30  in a narrow range in the position P 1  corresponding to the joining portion  13  in the terminal longitudinal direction. Accordingly, the first terminal  10  is attached to the housing  30 . 
         [0108]    Next, the pressing member  40  is attached to the housing  30 . More specifically, the cam portion  43  of the pressing member  40  is inserted over between the fixing arm portion  11  and the movable arm portion  12  to the left direction of the figure as indicated by an arrow while the pressing member  40  maintains the open position as shown in  FIG. 3(A) . 
         [0109]    After the insertion, the pressing member  40  is moved downwardly to be incorporated into the housing  30 . Accordingly, a bottom side of a right side half circle portion of the cam portion  43  of the pressing member  40  attached to the housing  30  is supported through the rotation guide portion  11 E- 1  of the first terminal  10 , as shown in  FIG. 3(B) . 
         [0110]      FIG. 4(A)  is a view showing a top-to-bottom dimension of a space formed between the cam portion  43  and the first terminal  10  after the pressing member  40  is attached. In the first terminal  10 , a dimension of a space (S 1 A) is formed to be larger than a top-to-bottom dimension (S 4 ) of the cam portion  43  when the pressing member  40  is at an open position. 
         [0111]    In the embodiment, the S 1 A is formed between a maximum rise position  11 E- 2  of the raised portion  11 E of the first terminal  10  and a bottom edge portion of the movable arm portion  12  facing the raised portion  11 E. In other words, a dimension of the maximum rise height of the raised portion  11 E of the first terminal  10  (S 2 ) is smaller than a dimension of a space formed between the bottom edge portion of the movable arm portion  12  of the first terminal  10  and the cam portion  43  in a top-to-bottom direction (S 3 A). The first terminal  10  is formed in such dimensions, which enables the cam portion  43  of the pressing member  40  to be inserted over when the pressing member  40  is attached. 
         [0112]    As described above, the top-to-bottom dimension of the side edge rotation portion  45  when the pressing member  40  is at an open position is set, so that the cam portion  43  of the pressing member  40  is not above the raised portion  11 E of the first terminal  10  even though the pressing member  40  at an open position is lifted. Accordingly, after the pressing member  40  is attached and before the second terminal is attached, the side edge rotation portion  45  prevents the pressing member  40  from coming off on both end positions of the pressing member  40  in a terminal arrangement direction. 
         [0113]    As shown in  FIG. 3(B) , after the first terminal  10  and the pressing member  40  are attached to the housing  30 , a plurality of the second terminals  20  is attached to the housing  30  from an opposite side of a press-fit direction in a longitudinal direction of the terminal  10 ; that is, from a left side in  FIG. 3(   c ). 
         [0114]    More specifically, the second terminal  20  is pressed to fit into the receiving groove  32  to be attached from the pressure receiving portion  22 B side in a terminal longitudinal direction as indicated by an arrow in the figure. As a result, as shown in  FIG. 3(D) , the fixed groove  21 F of the second terminal  20  is fitted into a left end portion of the bottom wall  35  of the housing  30 . Further, a top edge of the movable arm portion  22  bites into the top wall  36  of the housing  30  in a narrow range of the position P 2  corresponding to the joining portion  23  in the terminal longitudinal direction so that the second terminal  20  is attached to the housing  30 . Accordingly, an assembly of the connector  1  is completed. 
         [0115]      FIG. 4(B)  is a view showing a top-to-bottom dimension of a space formed between the cam portion  43  and the second terminal  20  after the second terminal  20  is attached. 
         [0116]    As described above, the bottom edge of the movable arm portion  22  of the second terminal  20  is provided below the bottom edge of the movable arm portion  12  of the first terminal  10  in a top-to-bottom direction. The second terminal  20  is formed, so that a dimension of a space formed between the bottom edge portion of the movable arm portion  22  of the second terminal  20  indicated by the two-dot hidden line and the maximum rise position  11 E- 2  of the raised portion  11 E of the first terminal  10  (S 1 B) is smaller than a dimension of the cam portion  43  in a top-to-bottom direction (S 4 ). 
         [0117]    In other words, a dimension of a space formed between the bottom edge portion of the movable arm portion  22  of the second terminal  20  and the cam portion  43  in a top-to-bottom direction (S 3 B) is smaller than a dimension of the maximum rise height of the raised portion  11 E of the first terminal  10  (S 2 ). 
         [0118]    A shape and dimension of the cam portion  44  of the pressing member  40  is identical to that of the cam portion  43 . Accordingly, at a position of the second terminal  20  in a terminal arrangement direction, a space between the bottom edge portion of the movable arm portion  22  of the second terminal  20  and the cam portion  44  is equal to the S 3 B shown of the first terminal  10  shown in  FIG. 4(B) . Accordingly, the cam portion  44  can move upwardly as much as the dimension of the S 3 B. 
         [0119]    In the embodiment, the upward movement is regulated through the movable arm portion  22 . Thus, the upward movement of the cam portion  44  is regulated through the movable arm portion  22  of the second terminal  20  at a position of the second terminal  20  in a terminal arrangement direction. Accordingly, even though the upward movement of the cam portion  43  at a position of the first terminal  10  appears to be possible, a regulation in the position of the second terminal  20  takes precedence to regulate the upward movement of the cam portion  43 . 
         [0120]    Accordingly, even though the pressing member  40  receives external force to be lifted, the cam portion  43  of the pressing member  40  will not be above the raised portion  11 E. Thus, the cam portion  43  does not come off to a right direction in  FIGS. 2(A)  and (B). Further, a coming off of the cam portion  43  is prevented at the raised portion  11 E. Accordingly, a coming off of the cam portion  44  to the right direction is also prevented. Thus, a prevention of the coming off of the cam portion  43  prevents the pressing member  40  from coming off from the housing  30 . 
         [0121]    As indicated by a hidden line in  FIG. 4(B) , the bottom edge of the movable arm portion  22  of the second terminal  20  in a portion to face the maximum rise position  11 E- 2  of the raised portion  11 E of the first terminal  10  in a terminal longitudinal direction can be formed to protrude downwardly of the bottom edge of the movable arm portion  22  indicated by a phantom line. 
         [0122]    Thus, a dimension of a space (S 1 B′) formed between a bottom edge of the protruding portion indicated by a hidden line and the maximum rise position  11 E- 2  of the raised portion  11 E of the first terminal  10  is to be smaller than a dimension (S 1 B) formed when the second terminal  20  having the movable arm portion  22  indicated by a phantom line is provided. As a result, the cam portions  43  and  44  will be even less likely to come off and an effect to prevent the pressing member  40  from coming off will be improved. 
         [0123]    As described above, the side edge rotation portion  45  attempts to prevent the pressing member  40  from coming off in the both end positions of the terminal arrangement direction of the pressing member  40 . However, even though the pressing member  40  is prevented from coming off in the both end positions, the pressing member  40  can be bent to come off if a width of the pressing member  40  in the terminal arrangement direction is large and the second terminal  20  does not regulate. 
         [0124]    In the embodiment, as described above, the first terminal  10  and the second terminal  20  cooperate to prevent the cam portions  43  and  44  from coming off, respectively. Accordingly, the pressing member  40  is prevented from coming off from the housing  30 . Further, the first terminal  10  and the second terminal  20  are arranged alternately and distributed all over the terminal arrangement direction. Further, the cam portions  43  and  44  are to be prevented from coming off in the distribution range. 
         [0125]    Accordingly, an effect to prevent the pressing member  40  from coming off will be improved. That is, the deflection of the pressing member  40  will effectively prevent the pressing member  40  from coming off in the case in which the number of the terminal is large and a width of the pressing member in the terminal arrangement direction is large. 
         [0126]    In the embodiment, the first terminal  10  and the second terminal  20  are arranged alternately. However, an order of the arrangement is not limited to the above. Instead, a similar effect will be obtained as far as the both terminals are distributed and arranged to be mixed in the terminal arrangement direction. Further, in the embodiment, the first terminal  10  and the second terminal  20  prevent the cam portions  43  and  44  from coming off, respectively, and no special member is required to prevent the cam portion from coming off. Accordingly, an enlargement of a connector can be prevented. 
         [0127]    The connector according to the embodiment is used as follows. First, as shown in  FIGS. 2(A) to 2(C) , the pressing member  40  is risen to be in an open position. Further, a connection circuit portion is inserted to the flat conductor insertion space  34  provided in a left portion inside of the housing  30 . 
         [0128]    The connection circuit portion is an end portion of the flat conductor (not shown). In this regard, a surface of the connection circuit is to be positioned in a lower surface side to face the contact portions  11 A and  21 A of the terminals  10  and  20 , respectively. 
         [0129]    After the flat conductor is inserted to a specific position, and more specifically, a distal of the flat conductor is inserted to a depth adjacent to an adjacent portion of the housing  30 , the pressing member  40  is rotated clockwise to a close position indicated by a phantom line in 
         [0130]      FIGS. 2(A) and 2(B) . 
         [0131]    When the pressing member  40  is at a close position, the cam portions  43  and  44  rotate around the rotation centers  43 A and  44 A, respectively, to be in a vertically long posture. The cam portions  43  and  44  press to displace the pressure receiving portions  12 B and  22 B of the terminals  10  and  20  upwardly, respectively. 
         [0132]    Displacements of the pressure receiving portions  12 B and  22 B of the both terminals  10  and  20  incline the movable arm portions  12  and  22  of the terminals  10  and  20  in the form of a lever while having the joining portions  13  and  23  as a fulcrum, respectively, as indicated by a phantom line in  FIGS. 2(A) and 2(B) . As a result, each of the pressing portions  12 A and  22 A is elastically displaced downwardly to press the flat conductor so that a surface of the connection circuit of the flat conductor and the contact portions  11 A and  21 A of the terminals  10  and  20 , respectively, are contacted each other. 
         [0133]    In the embodiment, the pressure receiving portion  12 B of the first terminal  10  is formed to be straight, while the pressure receiving portion  22 B of the second terminal  20  is formed to be a recess. Accordingly, when the pressing member  40  is at a close position, one end portion of the cam portion  44  in  FIG. 2(B)  having a half circle shape engages with the pressure receiving portion  22 B having a recess shape. That is, the pressure receiving portion  22 B having a recessed shape plays a role in positioning the pressing member  40  at a close position. 
         [0134]    When the first terminal  10  and the second terminal  20  are pressed fit to the housing from the opposite directions each other, an assembly error, and more specifically, a displacement between the terminals in a terminal longitudinal direction can occur. At this time, the pressure receiving portion  12 B of the first terminal  10  and the pressure receiving portion  22 B of the second terminal  20  are not positioned in the same positions in a terminal arrangement direction due to an assembly error. 
         [0135]    In the embodiment, the pressure receiving portion  12 B of the first terminal  10  is formed to be straight. 
         [0136]    Accordingly, when the pressing member  40  is at a close position, even though a position that is pressed by the cam portion  43  is slightly displaced to a terminal longitudinal direction, the pressure receiving portion  12 B of the first terminal  10  is displaced upwardly without problems after being pressed by the cam portion  43 . That is, the pressure receiving portion  12 B that is formed to be straight allows the assembly error described above. 
       Second Embodiment 
       [0137]    A second embodiment is different from the first embodiment in the two points. First, bottom edge portions of each of the movable arm portions of the first terminal and the second terminal are provided in the same position in a top-to-bottom direction. Second, when the pressing member is at an open position, a top-to-bottom dimension of the cam portion at a position of the second terminal in a terminal arrangement direction is made to be larger than a top-to-bottom dimension of the cam portion at a position of the first terminal. 
         [0138]    In the second embodiment, the first terminal is to be identical to the first terminal  10  in the first embodiment in a shape and dimension. Further, the cam portion corresponding to a position of the first terminal in a terminal arrangement direction is to be identical to the cam portion  43  of the first embodiment in a shape and dimension. 
         [0139]      FIG. 5  is a sectional view of an electrical connector according to the second embodiment.  FIG. 5  shows a section at a position of the second terminal in a terminal arrangement direction and corresponds to  FIG. 2(B)  that shows a section of the connector according to the first embodiment. 
         [0140]    In the embodiment, the members that correspond to the first embodiment have the same codes as the first embodiment with “′” added.  FIG. 5  is a sectional view at a position of the second terminal. Accordingly, the first terminal  10  and the cam portion  43  are not shown. 
         [0141]    In the embodiment, bottom edge portions of the movable arm portion  12  and a movable arm portion  22 ′ and top edge portions of the fixing arm portion  11  and a fixing arm portion  21 ′ of the first terminal  10  and a second terminal  20 ′ are provided in the same position in a top-to-bottom direction, respectively. The first terminal  10  and the cam portion  43  corresponding to a position of the first terminal  10  are identical to those of the first embodiment in shapes and dimensions. Accordingly, as described above, the cam portion  43  of the pressing member  40  can be inserted over when the connector  1 ′ is assembled. 
         [0142]    A cam portion  44 ′ corresponds to a position of the second terminal  20 ′ of a pressing member  40 ′. When the pressing member  40 ′ is at an open position, a dimension of the top-to-bottom direction of the cam portion  44 ′ is formed to be larger than a dimension in a top-to-bottom direction of the cam portion  43  corresponding to a position of the first terminal  10 . 
         [0143]    More specifically, a dimension in a top-to-bottom direction of a space formed between the bottom edge portion of the movable arm portion  22 ′ and the cam portion  44 ′ is formed to be smaller than a dimension of the maximum rise height of the raised portion  11 E of the first terminal  10  at a position in which the cam portion  44 ′faces the cam guide portion  21 ′D having a straight shape of the fixing arm portion  21 ′ of the second terminal  20 ′. 
         [0144]    At this time, the cam portion  44 ′ can move upwardly as much as the dimension of the space. Any more upward movement is to be regulated through the movable arm portion  22 ′. As described above, the upward movement of the cam portion  44 ′ is regulated through the movable arm portion  22 ′ of the second terminal  20 ′ at a position of the second terminal  20 ′ in a terminal arrangement direction. Accordingly, even though an upward movement of the cam portion  43  seems to be possible at a position of the terminal  10 , a regulation at the position of the second terminal  20 ′ is predominated. Thus, the upward movement of the cam portion  43  is to be regulated. 
         [0145]    Accordingly, even though the pressing member  40 ′ receives some kind of external force and is lifted, the cam portion  43  of the pressing member  40 ′ will not be above the raised portion  11 E. Accordingly, the cam portion  43  will not come off to a right direction in  FIGS. 2(A)  and (B). Further, due to the prevention of the coming off of the cam portion  43  in the raised portion  11 E, a coming off of the cam portion  44 ′ is also to be prevented. As described above, due to a prevention of the coming off of the cam portion  43 , the pressing member  40 ′ is prevented from coming off from the housing  30 . 
         [0146]    In the first and the second embodiments, the connector have two kinds of the terminals. The number of the kinds of the terminal is not limited to two, and may be more than three. Further, in the first and the second embodiments, the pressing member was to be a rotatable member. The pressing member can be a slidable member to be inserted into the housing. 
         [0147]    In the first and the second embodiments, the contact portions  11 A and  21 A of the terminals  10  and  20 , respectively, contact a circuit connection surface provided in a lower surface of the flat conductor to electrically connect. The contact connection surface is not limited to this way. For example, the pressing portions  12 A and  22 A of the terminals  10  and  20  can contact with the circuit connection surface provided on an upper face of the flat conductor, respectively, so that the pressing portions  12 A and  22 A function as the contact portion. 
         [0148]    Alternatively, the pressing portions  12 A and  22 A and the contact portions  11 A and  21 A, respectively, can be contacted the circuit connection surfaces provided on both sides of the flat conductor. Further, each terminal can select a surface of the flat conductor to contact so that the selected surface can contact the contact portions  11 A and  21 A and the pressing portions  12 A and  22 A that are corresponding, respectively. 
         [0149]    In the first and the second embodiments, as described above, the cooperation of the first terminal and the second terminal fully prevents the pressing member from coming off. However, a member to prevent the pressing member from coming off can be attached to improve the protection effectiveness. 
         [0150]    For example, a member to prevent the side edge rotation portions that are provided on both ends of a longitudinal direction of the pressing member from coming off can be attached to both ends of the housing. Further, the first embodiment and the second embodiment can be combined to prevent the pressing member from coming off. 
         [0151]    The disclosure of Japanese Patent Application No. 2007-024148, filed on Feb. 2, 2007 is incorporated in the application by reference. 
         [0152]    While the invention has been explained with reference to the specific embodiments of the invention, the explanation is illustrative and the invention is limited only by the appended claims.