Patent Publication Number: US-10777941-B2

Title: Connector

Description:
CROSS REFERENCE TO RELATED APPLICATION 
     This application claims priority to and the benefit of Japanese Patent Application No. 2016-153893 filed on Aug. 4, 2016, the entire contents of which are incorporated herein by reference. 
     TECHNICAL FIELD 
     The present disclosure relates to a connector. 
     BACKGROUND 
     Recently, due to significant increases in the information volume and communication speeds of electronic devices, noise suppression for devices is becoming important issue. On the other hand, the progressive miniaturization of recent electronic devices also demands miniaturization of connectors mounted in the electronic devices. As such, a connector with a reduced profile needs to allow confirmation of the mounting of the connector onto a circuit board, while demonstrating a satisfactory noise shielding effect. 
     According to the circuit board electrical connector of PTL 1, two shielding members cover substantially the entire area of the outer peripheral surface of the housing in order to demonstrate a noise-shielding effect. 
     CITATION LIST 
     Patent Literature 
     PTL 1: JP-A-2018-146870 
     SUMMARY 
     Technical Problem 
     However, according to the circuit board electrical connector described in PTL 1, in a state with reduced profile, there is no consideration in relation to obtaining a satisfactory noise-shielding effect while facilitating confirmation of the mounting thereof on the circuit board. 
     In light of such a problem, the present disclosure aims to provide a connector having a reduced profile that is capable of facilitating confirmation of the mounting thereof on a circuit board while demonstrating a satisfactory noise-shielding effect. 
     Solution to Problem 
     In order to solve the above problem, a connector according to a first aspect includes: 
     a first connector equipped with
         a first insulator that includes a pair of outer peripheral walls opposing each other, and a fitting projection formed between the pair of outer peripheral walls, and   a first shielding member supported by the first insulator; and       

     a second connector equipped with
         a second insulator having a fitting recess fit to the fitting projection, and   a second shielding member supported by the second insulator,       

     wherein, when the first connector and the second connector are fitted to each other, the first shielding member and the second shielding member engage each other are partially spaced apart from the first insulator and the second insulator, respectively. 
     In the connector according to a second aspect, 
     the second shielding member includes a bend curved in an approximate U-shape, and 
     the first shielding member includes an elastic deformation portion that accommodates the bend when the first shielding member is fitted to the second shielding member. 
     In the connector according to a third aspect, 
     when the first shielding member and the second shielding member are fitted together, the elastic deformation portion and the bend come into contact with each other at one internal point in a cross-sectional view. 
     In the connector according to a fourth aspect, 
     wherein, when the first shielding member and the second shielding member are fitted together, a space between a pair of the first shielding members and a space between a pair of the second shielding members are deviated from each other in a transverse direction. 
     In the connector according to a fifth aspect, 
     the elastic deformation portion is formed on the first shielding member toward the first insulator, and 
     an outer surface of the first shielding member is formed in a plate-like shape. 
     In the connector according to a sixth aspect, 
     the first insulator includes a plurality of first contacts mounted on a mounting surface of a first circuit board, and 
     a mounting portion of the first contact and a mounting portion of the first shielding member are visible from a fitting direction of the first connector and the second connector. 
     In the connector according to a seventh aspect, 
     transverse lengths of the first shielding member opposite to each other are asymmetrical. 
     In the connector according to an eighth aspect, 
     the bend is formed toward the second insulator, and 
     an outer surface of the second shielding member is formed in a plate-like shape. 
     In the connector according to a ninth aspect, 
     the second insulator supports a plurality of second contacts mounted on a mounting surface of a second circuit board, and 
     the mounting portion of the second contact is visible from a fitting direction of the first connector and the second connector. 
     In the connector according to a tenth aspect, 
     transverse lengths of the second shielding member opposite to each other are asymmetrical. 
     Advantageous Effect 
     The connector according to the embodiment of the present disclosure is capable of facilitating confirmation of the mounting on the circuit board while demonstrating a satisfactory noise-shielding effect, even when having a reduced profile. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In the accompanying drawings: 
         FIG. 1  is a top perspective view illustrating a state in which, in a connector according to an embodiment, a receptacle connector and a plug connector are separated from each other; 
         FIG. 2  is a top perspective view of the receptacle connector; 
         FIG. 3  is a top view of the receptacle connector; 
         FIG. 4  is an exploded top perspective view of the receptacle connector; 
         FIG. 5  is a top perspective view of a receptacle insulator; 
         FIG. 6  is an enlarged view of a VI-portion of  FIG. 5 ; 
         FIG. 7  is a cross-sectional view taken from arrow VII-VII of  FIG. 5 ; 
         FIG. 8  is a cross-sectional view taken from arrow VIII-VIII of  FIG. 5 ; 
         FIG. 9  is a top perspective view of a receptacle contact; 
         FIG. 10  is a cross-sectional view taken from arrow X-X of  FIG. 2 ; 
         FIG. 11  is a top perspective view of a receptacle power-source contact; 
         FIG. 12  is a cross-sectional view taken from arrow XII-XII of  FIG. 2 ; 
         FIG. 13  is a top perspective view of a pair of receptacle shielding members; 
         FIG. 14  is a top perspective view of a plug connector; 
         FIG. 15  is a top view of the plug connector; 
         FIG. 16  is a top perspective view of a plug insulator of a molded plug; 
         FIG. 17  is a top perspective view of a plug contact; 
         FIG. 18  is a cross-sectional view taken from arrow XVIII-XVIII of  FIG. 15 ; 
         FIG. 19  is a top perspective view of a plug power-source contact; 
         FIG. 20  is a cross-sectional view taken from arrow XX-XX of  FIG. 15 ; 
         FIG. 21  is a top perspective view of a pair of plug shielding members; 
         FIG. 22  is a top perspective view of a state of the connector of  FIG. 1  in which the receptacle connector and the plug connector are fit together; 
         FIG. 23A  is a cross-sectional view taken from arrow XXIII-XXIII of  FIG. 22  illustrating a state before the receptacle connector and the plug connector are fit together; 
         FIG. 23B  is a cross-sectional view taken from arrow XXIII-XXIII of  FIG. 22  illustrating a state after the receptacle connector and the plug connector are fit together; 
         FIG. 24A  is a cross-sectional view taken from arrow XXIV-XXIV of  FIG. 22  illustrating a state before the receptacle connector and the plug connector are fit together; and 
         FIG. 24B  is a cross-sectional view taken from arrow XXIV-XXIV of  FIG. 22  illustrating a state after the receptacle connector and the plug connector are fit together. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter, an embodiment will be described with reference to the accompanying drawings. Terms such as front-rear direction, left-right direction, and up-down direction used herein correspond to directions indicated by arrows in the figures. In the following description, a first connector is referred to as a receptacle connector  20 , and a second connector is referred to as a plug connector  70 . However, this is not restrictive. The first connector may function as a plug and the second connector may function as a receptacle. 
     In the following description, the receptacle connector  20  and the plug connector  70  are fitted to circuit boards CB 1  and CB 2 , respectively, in a direction perpendicular thereto. That is, the receptacle connector  20  and the plug connector  70  are fitted along the up-down direction. However, this is not restrictive and the receptacle connector  20  and the plug connector  70  may be fitted to the circuit boards CB 1  and CB 2 , respectively, in a direction parallel therewith. Alternatively, one of the receptacle connector  20  and the plug connector  70  may be fitted to the corresponding circuit board CB 1  or CB 2  in a direction perpendicular thereto, while the other is fitted to the corresponding circuit board CB 1  or CB 2  in a direction parallel therewith. The receptacle connector  20  or the plug connector  70  may be coupled to a circuit board other than a rigid board, e.g., a flexible printed circuit board (FPC). 
       FIG. 1  is a top perspective view of the connector  10  according to the present embodiment in a state in which the receptacle connector  20  and the plug connector are separated from each other. 
     The connector  10  according to the present embodiment includes, as primary components, the receptacle connector  20  (a first connector) and the plug connector  70  (a second connector). 
       FIG. 2  is a top perspective view of the receptacle connector  20 .  FIG. 3  is a top view of the receptacle connector  20 .  FIG. 4  is an exploded top perspective view of the receptacle connector  20 .  FIG. 5  is a top perspective view of a receptacle insulator  30 .  FIG. 6  is an enlarged view of a VI-portion of  FIG. 5 .  FIG. 7  is a cross-sectional view taken from arrow VII-VII of  FIG. 5 .  FIG. 8  is a cross-sectional view taken from arrow VIII-VIII of  FIG. 5 .  FIG. 9  is a top perspective view of a receptacle contact  40 .  FIG. 10  is a cross-sectional view taken from arrow X-X of  FIG. 2 .  FIG. 11  is a top perspective view of a receptacle power-source contact  50 .  FIG. 12  is a cross-sectional view taken from arrow XII-XII of  FIG. 2 .  FIG. 13  is a top perspective view of a pair of receptacle shielding members  60 . 
     A configuration of the receptacle connector  20  will be described in detail with reference mainly to  FIG. 2  to  FIG. 13 . 
     As illustrated in  FIG. 4 , the receptacle connector  20  primarily includes the receptacle insulator  30  (a first insulator), a plurality of receptacle contacts  40  (first contacts), four receptacle power-source contacts  50 , and a pair of receptacle shielding members  60  (first shielding members). 
     The receptacle insulator  30  is formed by injection molding of a synthetic resin having insulating and heat resistant properties. The receptacle insulator  30  extends in the left-right direction (see  FIG. 5 ). The receptacle insulator  30  includes a bottom plate  31  constituting the bottom, a pair of outer peripheral walls  32  that protrude upward from front and rear end portions on the top surface of the bottom plate  31  and face each other, and a fitting projection  33  that protrudes upward from the top surface of the bottom plate  31  and is formed between the pair of outer peripheral walls  32 . The fitting projection  33  is positioned inside the outer peripheral walls  32  with a space therefrom and linearly extends in the left-right direction. The spaces formed between the outer peripheral walls  32  and the fitting projection  33  constitute a pair of fitting recesses  34 . 
     Across the top and rear surfaces of the front wall  32   a  of the outer peripheral wall  32 , the top surface of the bottom plate  31 , and the front and top surfaces of the fitting projection  33 , a plurality of contact fitting grooves  35  for attaching a plurality of receptacle contacts  40  are provided in a line in a recessed manner in the left-right direction. Similarly, across the top and rear surfaces of the rear wall  32   b  of the outer peripheral wall  32 , the top surface of the bottom plate  31 , and the rear and the top surfaces of the fitting projection  33 , a plurality of contact fitting grooves  35  for attaching a plurality of receptacle contacts  40  are provided in a line in a recessed manner in the left-right direction. Each of the contact fitting grooves  35  is formed throughout the receptacle insulator  30  in the up-down direction. The number of the contact fitting grooves  35  is equal to the number of the receptacle contacts  40 . The contact fitting grooves  35  include deformation allowing grooves formed on the front and rear surfaces of the fitting projection  33  in a manner recessed deeper into the fitting projection  33  (see  FIG. 7 ). The contact fitting grooves  35  also include contact engaging projections  35   b  that extend in the up-down direction and project on both left and right side surfaces of the grooves formed on the rear surface of the front wall  32   a  and the front surface of the rear wall  32   b.    
     Power-source contact fitting grooves  36  for fitting the receptacle power-source contacts  50  are formed in a recessed manner across the top and rear surfaces in the left and right end portions of the front wall  32   a , the top surface of the bottom plate  31 , and the front and top surfaces in the left and right end portions of the fitting projection  33 . Similarly, the power-source contact fitting grooves  36  for fitting the receptacle power-source contacts  50  are formed in a recessed manner across the top and front surfaces in the left and right end portions of the rear wall  32   b , the bottom portion (the top surface) of the bottom plate  31 , and the rear and the top surfaces in the left and right end portions of the fitting projection  33 . Each of the power-source contact fitting grooves  36  is formed throughout the receptacle insulator  30  in the up-down direction. The number of the power-source contact fitting grooves  36  is equal to the number of the receptacle power-source contacts  50 . The power-source contact fitting grooves  36  include a deformation allowing groove  36   a  that is formed on each of the front and rear surfaces of the fitting projection  33  in a manner further recessed on the fitting projection  33  (see  FIG. 8 ). The power-source contact fitting grooves  36  also include power-source contact engaging projections  36   b  that extend in the up-down direction and project from both left and right side surfaces of the grooves formed on the rear surface of the front wall  32   a  and the front surface of the rear wall  32   b.    
     The right and left end portions of the receptacle insulator  30  include a pair of supports  37  for supporting a pair of receptacle shielding members  60  (see  FIG. 5 ). The pair of supports  37  is provided in point-symmetrical arrangement with respect to left and right end portions of the receptacle insulator  30 . In each of the right and left end portions, the pair of supports  37  is formed such that one of the lengths in the front-rear direction is shorter than the other. A front-rear width of the pair of supports  37  in its entirety, in each of the right and left end portions, is wider than the front-rear width between the outer surface of the front wall  32   a  and the outer surface of the rear wall  32   b.    
     Each of the receptacle contacts  40  is formed by processing a thin plate made of a copper alloy having a spring-like elasticity (e.g., phosphor bronze, beryllium copper, or titanium copper) or Corson copper alloy into a shape as illustrated in the figure (see  FIG. 9 ) by using a progressive die (stamping). Each of the receptacle contacts  40  is plated with gold or tin after nickel plate undercoating. 
     The receptacle contact  40  includes a mounting portion  41  that extends outward in an approximate L shape. The receptacle contact  40  also includes a pair of latches  42  constituted by a portion continuous with the upper inner edge portion of the mounting portion  41  and another portion that is spaced apart from, and opposite to, the above portion. The receptacle contact  40  further includes a bend  43  that couples the pair of latches  42  together, an elastic contact piece  44  having an approximate S-shape that is continuous with the latch  42  formed on the inner side, and a contact portion  45  (a first contact) formed to face outward on a distal portion of the elastic contact piece  44 . 
     The bend  43  is formed at a position lower than a portion of the contact portion  45  that is most protruding toward the bend  43 . The elastic contact piece  44  is wider than the bend  43 . The distal end of the elastic contact piece  44  is formed at a height similar to the portion of the contact portion  45  that is most protruding toward the bend  43 . 
     Each of the receptacle contacts  40  is press-fit to the receptacle insulator  30  from below and, when the pair of latches  42  engages with the contact engaging projection  35   b , latches onto the right and left inner wall surfaces of the contact fitting grooves  35 . Thus, each of the receptacle contacts  40  is retained within the corresponding contact fitting groove  35  (see  FIGS. 4 and 10 ). When the receptacle contact  40  is retained by the receptacle insulator  30  (within the contact fitting grooves  35 ), the elastic contact piece  44  is spaced apart from the inner surface of the deformation allowing groove  35   a . Thus, the elastic contact piece  44  may be elastically deformed in the front-rear direction within the deformation allowing groove  35   a  (see  FIG. 10 ). The mounting portion  41  of each of the receptacle contacts  40  is positioned on the outer peripheral side of the outer peripheral wall  32 . That is, the distal end of the mounting portion  41  of each of the receptacle contacts  40  is located outside the outer peripheral wall  32 . 
     The receptacle power-source contact  50  includes a mounting portion  51  extending outward in an approximate L-shape (see  FIG. 11 ). The receptacle power-source contact  50  also includes a pair of latches  52  that include a portion continuous with the upper inner edge portion of the mounting portion  51  and another portion that is opposite to, and spaced apart in the front-rear direction from, the above portion. The receptacle power-source contact  50  includes a curve  53  that couples the pair of latches  52  together, and an elastic contact piece  54  in an approximate S-shape that is continuous with the latch  52  formed on the inner side. The receptacle power-source contact  50  further includes a contact portion  55  that faces outward to a distal end of the elastic contact piece  54 , and the projection  56  located on top of the latch  52  formed on the inner side. 
     Each of the receptacle power-source contacts  50  is press-fit to the receptacle insulator  30  from therebelow and, when the pair of latches  52  and the power-source contact engaging projections  36   b  are engaged together, latches onto the right and left inner wall surfaces of the power-source contact fitting groove  36 . Thus, each of the receptacle power-source contacts  50  is retained within the power-source contact fitting groove  36  (see  FIGS. 4 and 12 ). When the receptacle power-source contacts  50  are retained within the receptacle insulator  30  (the power-source contact fitting grooves  36 ), the elastic contact piece  54  is spaced apart from the inner surface of the deformation allowing groove  36   a . Thus, the elastic contact piece  54  may be elastically deformed in the front-rear direction within the deformation allowing groove  36   a  (see  FIG. 12 ). The mounting portion  51  of each of the receptacle power-source contacts  50  is positioned on the outer peripheral side of the outer peripheral wall  32 . That is, the distal end of the mounting portion  51  of each of the receptacle power-source contacts  50  is located outside the outer peripheral wall  32 . 
     Each of the pair of receptacle shielding members  60  is configured as the same component with the same shape (see  FIGS. 3 and 13 ). Each of the receptacle shielding members  60  is formed by press-forming a metal plate (a conductive material). Each of the receptacle shielding members  60  includes an outer peripheral shielding portion  61  (a first outer peripheral shielding portion) having a plate-like shape that constitutes an outer surface of the receptacle shielding member  60  and extends in the left-right direction. The receptacle shielding member  60  also includes an elastic deformation portion  62  that is formed from the bottom edge of the outer peripheral shielding portion  61  toward the receptacle insulator  30  (inside). The elastic deformation portion  62  horizontally extends with a predetermined width toward the inner side from the bottom edge of the outer peripheral side shielding portion  61  and bends upward and outward at the edge of the portion extending horizontally (see  FIG. 12 ). The space surrounded by the outer peripheral shielding portion  61  and the elastic deformation portion  62  is open at the distal ends thereof. The receptacle shielding member  60  further includes a plurality of through holes  63  formed throughout the elastic deformation portion  62  in the up-down direction and spaced apart from one another at predetermined intervals, and a guide  64  that protrudes inclining toward the inner side of the receptacle insulator  30 . 
     The receptacle shielding member  60  includes a plurality of mounting portions  65  (first mounting portions) that are formed at the bottom of the outer peripheral side shielding portion  61  and spaced apart from one another at predetermined intervals. The mounting portions  65  extend inwardly in an approximate L shape from the bottom portion of the outer peripheral side shielding portion  61 . The positions of the mounting portions  65  in the left-right direction coincide with the positions of the corresponding through-holes  63  in the left-right direction. That is, the distal ends of the mounting portions  65  are positioned directly under the through holes  63  (see  FIG. 3 ). 
     The receptacle shielding member  60  includes latches  66  (first engaging portions) that project from the left and right end portions of the inner side of the receptacle shielding member  60  (see  FIG. 13 ). The latches  66  having a claw shape protrusion, as a pair, at left and right end portions of the inside of the outer peripheral shielding portion  61 . The receptacle shielding member  60  includes a pair of transverse portions  67  that extends from the left and right end portions of the outer peripheral shielding portion  61  toward the receptacle insulator  30 . The front-rear direction lengths of the transverse portions  67  opposite to each other are asymmetrical. In particular, in the transverse portions  67  opposite to each other, a front-rear direction length of one of the transverse portions  67  is shorter than a front-rear direction length of the other transverse portion  67 . In the transverse portions  67  opposite to each other, the front-rear width of the transverse portion  67  having the front-rear direction length longer than the other is wider than half the front-rear direction width of the receptacle connector  20  in its entirety. The pair of transverse portions  67  include respective fitting portions  68 . The fitting portions  68  are an approximate U-shape in cross-section. That is, the fitting portions  68  are constituted by three surfaces: a right surface, a left surface, and a top surface. In the pair of mounting portions  68 , a front-rear direction length of one of the fitting portions  68  is shorter than a front-rear direction length of the other fitting portion  68 . The top end portion of the fitting portion  68  is R-shaped. 
     Each of the receptacle shielding members  60  is fitted to the receptacle insulator  30  by the engagement between the pair of fitting portions  68  and the support  37  from thereabove (see  FIG. 4 ,  FIG. 10 , and  FIG. 12 ). When the receptacle shielding member  60  is fitted to the receptacle insulator  30 , the receptacle shielding member  60  is partially spaced apart from the receptacle insulator  30 . In particular, the outer peripheral wall  32  is spaced apart from the elastic deformation portion  62  and the guide  64  in the front-rear direction. That is, a space S 1  is formed across the left-right direction between the outer peripheral wall  32  and the elastic deformation portion  62  and the guide  64 . At this point, the distal end of the mounting portion  41  of the receptacle contact  40  and the distal end of the mounting portion  51  of the receptacle power-source contact  50  are visible in the up-down direction (the fitting direction of the first connector and the second connector) in the space S 1  (see  FIG. 3 ). The distal end portion of the mounting portion  65  of the receptacle shielding member  60  is visible in the up-down direction in the through-hole  63  (in the fitting direction of the first connector and the second connector). 
     When the receptacle shielding member  60  is fit to the receptacle insulator  30 , the top edge portion of the outer peripheral shielding portion  61  of the receptacle shielding member  60  is positioned slightly above the top surfaces of the outer peripheral wall  32  and the fitting projection  33  of the receptacle insulator  30  (see  FIG. 10  and  FIG. 12 ). 
     The receptacle shielding member  60  has a double-shielding structure along the front-rear direction and the left-right direction. In particular, the shielding structure includes a double structure along the left-right direction with respect to the outer peripheral shielding portion  61  having the flat-plate shape, the elastic deformation portion  62 , and the guide  64 . Similarly, the shielding structure also includes a double structure along the front-rear direction constituted by the left and right side surfaces of the fitting portion  68 . 
     In the receptacle connector  20  having the configuration as described above, the mounting portion  41  of each of the receptacle contacts  40  is soldered to a circuit pattern formed on the mounting surface of the circuit board CB 1  (i.e., a rigid substrate, a first circuit board, see  FIG. 10  and  FIG. 12 ). The mounting portion  51  of each of the receptacle power-source contacts  50  is soldered to a power supply pattern formed on the mounting surface. Each of the mounting portions  65  of the receptacle shielding member  60  is soldered to a ground pattern formed on the mounting surface. In this way, the receptacle connector  20  is mounted on the circuit board CB 1 . The mounting surface of the circuit board CB 1  includes electronic components (e.g., a CPU, a controller, a memory, etc.) mounted thereon other than the receptacle connector  20 . 
     A configuration of the plug connector  70  will be described in detail with reference mainly to  FIG. 14  to  FIG. 21 . 
       FIG. 14  is a top perspective view of the plug connector  70 .  FIG. 15  is a top view of the plug connector  70 .  FIG. 16  is a top perspective view of a plug insulator  80  of a molded plug  75 .  FIG. 17  is a top perspective view of plug contacts  90 .  FIG. 18  is a cross-sectional view taken from arrow XVIII-XVIII of  FIG. 15 .  FIG. 19  is a top perspective view of plug power-source contacts  100 .  FIG. 20  is a cross-sectional view taken from arrow XX-XX of  FIG. 15 .  FIG. 21  is a top perspective view of a pair of plug shielding members  110 . 
     The plug connector  70  primarily includes the molded plug  75 , four plug power-source contacts  100 , and a pair of plug shielding members  110  (second shielding members). The molded plug  75  is constituted by the plug insulator  80  (a second insulator) and a plurality of plug contacts  90  (second contacts). 
     The molded plug  75  is a plate-like member extending in the left-right direction formed by insert-molding of a synthetic resin material having insulating and heat-resistant properties, together with a plurality of the plug contacts  90 . The plug insulator  80  constituting the molded plug  75  includes a bottom plate  81  constituting the bottom, and an annular wall  82  protruding upward from the entire periphery of the top surface of the bottom plate  81  (see  FIG. 16 ). A space formed by the bottom plate  81  and the annular wall  82  constitutes a fitting recess  83 . 
     On the front wall  82   a  and the rear wall  82   b  of the annular wall  82 , a plurality of contact supporting grooves  84  formed in an approximate U-shape across the front, rear, and top surfaces are arranged in a line in the left-right direction. The plurality of contact supporting grooves  84  retain corresponding plug contacts  90 . The number of the plurality of contact supporting grooves  84  is equal to the number of the plug contacts  90 . 
     In the left and right end portions of the front wall  82   a , a power-source contact fitting groove  85  which is an approximate U-shape in cross-section is formed in a recessed manner across the front, rear, and top surfaces. Similarly, in the left and right end portions of the rear wall  82   b , a power-source contact fitting groove  85  which is an approximate U-shape in cross-section is formed in a recessed manner across the front, rear, and top surfaces. The plug power-source contact  100  is fitted to the power-source contact fitting grooves  85 . The number of the power-source contact fitting grooves  85  is equal to the number of the plug power-source contacts  100 . 
     In the left and right end portions of the plug insulator  80 , a pair of supports  86  that support two plug shielding members  110  are formed. The pair of supports  86  are in a point-symmetrical arrangement with respect to the left and right end portions of the plug insulator  80 . In each of the right and left end portions, the pair of supports  86  are formed such that one of front-rear direction lengths is shorter than the other. A front-rear width of the pair of supports  86  in its entirety, in each of the right and left end portions, is wider than the front-rear width of the annular wall  82 . 
     Each of the plug contacts  90  is formed by processing a thin plate made of a copper alloy (e.g., phosphor bronze, beryllium copper, or titanium copper) or Corson copper alloy into a shape as illustrated in the figure (see  FIG. 17 ) by using the progressive die (stamping). Each of the plug contacts  90  is plated with gold or tin after nickel plate undercoating. 
     The plug contact  90  includes a mounting portion  91  that extends outward in an approximate L shape. The plug contact  90  includes a contact portion  92  (a second contact portion) that faces inward and is continuous with the top end portion of the mounting portion  91  and an extending portion  93  that extends outward in an approximate U-shape from the contact portion  92 . The plug contact  90  further includes a plug projection  94  formed on top of the contact portion  92  and a guide  95  formed on top of the extending portion  93 . 
     A distal end of the approximate U-shape of the extending portion  93  is positioned at substantially the same height as the contact portion  92 . 
     Each of the plug contacts  90  is fitted to the corresponding contact supporting groove  84  by contacting the entire inner surface of the mounting portion  91  excluding the distal end thereof and the contact supporting groove  84  (see  FIG. 18 ). When the plug contact  90  is fitted to the plug insulator  80  (the contact supporting groove  84 ), the mounting portion  91  of each of the plug contacts  90  is positioned on the outer peripheral side of the annular wall  82 . That is, the distal end portion of the mounting portion  91  of each of the plug contacts  90  is positioned outside the annular wall  82 . 
     The plug power-source contact  100  includes a mounting portion  101  that extends outward in an approximate L-shape (see  FIG. 19 ). The plug power-source contact  100  includes an extending portion  102  that is continuous from to the top internal end of the mounting portion  101  and internally extends in an approximate U-shape, and a contact portion  103  that faces inward on the outer surface of the extending portion  102 . The plug power-source contact  100  includes a latch  104  protruding from each of the left and right side surfaces of the outer portion of the extending portion  102 , and a guide  105  formed on top of the extending portion  102 . The plug power-source contact  100  also includes a first projection  106  which protrudes outward on the outer surface of the extending portion  102 , and a second projection  107  formed on a top portion of the contact portion  103 . The plug power-source contact  100  further includes a stabilizer  108  formed in the distal end portion of the approximate U-shape of the extending portion  102 . 
     Each of the plug power-source contacts  100  is press-fit to the molded plug  75  from thereabove and, when the outer groove of the power-source contact fitting groove  85  and the latch  104  are engaged together, is fitted to each of the power-source contact fitting grooves  85  (see  FIG. 14 ,  FIG. 16 , and  FIG. 20 ). When the plug power-source contact  100  is fitted to the molded plug  75  (the power-source contact fitting groove  85 ), the mounting portion  101  of each of the plug power-source contacts  100  is positioned on the outer peripheral side of the annular wall  82 . That is, the top distal end of the mounting portion  101  of each of the plug power-source contacts  100  is positioned outside the annular wall  82 . The stabilizer  108  of each of the plug power-source contacts  100  is engaged with the deepest portion inside the power-source contact fitting groove  85  (see  FIG. 20 ). 
     Each of the pair of plug shielding members  110  are the same component having the same shape (see  FIG. 21 ). Each of the plug shielding members  110  is formed by press forming a metal plate (a conductive material). Each of the plug shielding members  110  includes an outer peripheral side shielding portion  11  (a second outer peripheral side shielding portion) having a flat-plate shape that constitutes an outer surface thereof and extends in the left-right direction. Inside the outer peripheral shielding portion  111 , an inner peripheral shielding portion  112  made up of a flat plate parallel to the outer peripheral shielding portion  111  is located. The left-right direction width of the inner peripheral shielding portion  112  is shorter than the outer peripheral shielding portion  111 . A bottom edge of the inner peripheral shielding portion  112  is located above the bottom edge of the outer peripheral shielding portion  111  (see  FIG. 18 ,  FIG. 20 , and  FIG. 21 ). The plug shielding member  110  includes a bend connecting portion  113  that couples the top edge portion of the inner peripheral shielding portion  11  and the top edge portion of the outer peripheral shielding portion  111  together. The bend connecting portion  113  is curved upward in cross-section. The outer peripheral shielding portion  111 , the inner peripheral shielding portion  112 , and the bend connecting portion  113  together form a bend  114  that is bent in an approximate U-shape. The bend  114  is formed toward the molded plug  75 . 
     The plug shielding member  110  includes a plurality of mounting portions  115  (second mounting portions) that are formed on the bottom of the outer peripheral shielding portion  111  in a manner spaced apart from each other. The mounting portions  115  linearly extend in the up-down direction (in the fitting direction of the first connector and the second connector) from the bottom of the outer peripheral shielding portion  111 . 
     The plug shielding member  110  includes latches  116  (second engaging portions) formed in a recessed manner in the left and right end portions on the outer side (see  FIG. 21 ). The positions of the latches  116  correspond to the positions of the latches  66  of the receptacle shielding member  60 . A pair of latches  116  are formed in a recessed manner in the left and right end portions on the outside of the outer peripheral shielding portion  111 . The plug shielding member  110  includes a pair of transverse portions  117  that extends toward the plug insulator  80  from the left and right ends of the outer peripheral shielding portion  111 . The transverse portions  117  opposite to each other have asymmetric lengths in the front-rear direction. In particular, of the opposing transverse portions  117 , one of the transverse portion  117  has a front-rear direction length shorter than that of the other transverse portion  117 . The one of the transverse portions  117  having the longer front-rear direction length has a front-rear width greater than half the front-rear width of the plug connector  70  in its entirety. The pair of transverse portions  117  include respective fitting portions  118 . The fitting portion  118  has an approximate U-shape in cross-section. That is, the fitting portion  118  is constituted by three surfaces: the left surface, the right surface, and the top surface. One of the fitting portions  118  has the front-rear direction length shorter than that of the other fitting portion  118 . The top of the fitting portion  118  has an R-shape. 
     Each of the plug shielding members  110  is fitted to the molded plug  75  by the engagement between the pair of fitting portions  118  and the supports  86  from thereabove (see  FIG. 14 ,  FIG. 18 , and  FIG. 20 ). When the plug shielding member  110  is fitted to the molded plug  75 , the plug shielding member  110  is partially spaced apart from the plug insulator  80 . In particular, the annular wall  82  and the inner peripheral shielding portion  112  are spaced apart from each other in the front-rear direction. That is, a space S 2  extending across the left-right direction is formed between the annular wall  82  and the inner circumferential shielding portion  112 . At this point, the distal end of the mounting portion  91  of the plug contact  90  and the distal end of the mounting portion  101  of the plug power-source contact  100  are visible from the up-down direction (the fitting direction of the first connector and the second connector) in the space S 2  ( FIG. 15 ). 
     The plug shielding member  110  has a double-shielding structure along the front-rear direction and the left-right direction. In particular, the shielding structure includes a double structure along the left-right direction with respect to the outer peripheral shielding portion  111  and the inner peripheral shielding portion  112  that have flat plate-like shapes. Similarly, the shielding structure also includes a double structure along the front-rear direction constituted by the left and right side surfaces of the fitting portion  118 . 
     The plug connector  70  having the structure described above is mounted on a mounting surface formed on one surface of the circuit board CB 2  (a rigid substrate, a second circuit board, see  FIG. 18  and  FIG. 20 ), which is a plate parallel with the circuit board CB 1 . In particular, the mounting portion  91  of each of the plug contacts  90  is soldered to the circuit pattern formed on the mounting surface of the circuit board CB 2 . The mounting portion  101  of each of the plug power-source contacts  100  is soldered to a power-source pattern formed on the mounting surface. Each of the mounting portions  115  of the plug shielding member  110  is soldered to a ground pattern formed on the mounting surface. The mounting surface of the circuit board CB 2  includes electronic components (e.g., a high-performance module, a semiconductor, a large capacity memory, etc.) mounted thereon other than the plug connector  70 . 
     A process to couple the plug connector  70  to the receptacle connector  20  will be described. 
       FIG. 22  is a top perspective view of a state of the connector  10  of  FIG. 1  in which the receptacle connector  20  and the plug connector  70  are fitted together.  FIG. 23A  and  FIG. 23B  are cross-sectional views taken from arrow XXIII-XXIII of  FIG. 22  illustrating a state in which the receptacle connector  20  and the plug connector  70  are being fitted together.  FIG. 23A  illustrates a state before the fitting, and  FIG. 23B  illustrates a state after the fitting.  FIG. 24A  and  FIG. 24B  are cross-sectional views taken from arrow XXIV-XXIV of  FIG. 22  illustrating a state in which the receptacle connector  20  and the plug connector  70  are being fitted together.  FIG. 24A  illustrates a state before the fitting, and  FIG. 24B  illustrates a state after the fitting. 
     As illustrated in  FIG. 1 ,  FIG. 23A , and  FIG. 24A , in a state in which the plug connector  70  is arranged upside down, the receptacle connector  20  and the plug connector  70  are brought to oppose each other in the up-down direction while their positions with respect to the front-rear and left-right directions substantially matching one another. Then, the plug connector  70  is moved downward. In a case where the positions of the receptacle connector  20  and the plug connector  70  are slightly deviated from each other in the front-rear direction, the top edge portion of the outer peripheral shielding portion  61  is positioned slightly above the top surfaces of the outer peripheral wall  32  and the fitting projection  33  of the receptacle insulator  30 , as described above, and first abuts the curved connecting portion  113  of the plug shielding member  110 . Thus, the plug connector  70  is guided into the receptacle connector  20 . Similarly, even when the positions of the receptacle connector  20  and the plug connector  70  are slightly deviated from each other in the left-right direction, the bottom edge of the fitting portion  118  of the plug shielding member  110  and the top end portion of the fitting portion  68  of the receptacle shielding member  60 , which also has an R-shape, come into contact with each other. Thus, the bottom edge of the fitting portion  118  is guided by the top end portion of the fitting portion  68 . 
     On the other hand, when, for example, the receptacle connector  20  and plug connector  70  are deviated from each other in the left-right direction, the fitting portion  68  of the receptacle connector  20  abuts the fitting portion  118  of the plug connector  70 , as described above. Thus, the receptacle connector  20  and plug connector  70  do not fit together. In this case, even if an attempt is made to forcibly fit these connectors, the metal planes of the fitting portion  68  and the fitting portion  118  abut each other. Accordingly, the connector  10  can prevent damage to the receptacle connector  20  and plug connector  70 . 
     When the plug connector  70  is further moved downward, even if, for example, the receptacle connector  20  and the plug connector  70  are slightly deviated from each other in the front-rear direction, the bottom end surfaces of the front wall  82   a  and the rear wall  82   b  including the guide  95  of the plug contact  90  and the guide  105  of the plug power-source contact  100  come into contact with the internal end portion of the outer peripheral wall  32 . Thus, the front wall  82   a  and the rear wall  82   b  enter the fitting recess  34 . That is, the guide  95  of the plug contact  90  and the guide  105  of the plug power-source contact  100  enter the fitting recess  34  (see  FIG. 23B  and  FIG. 24B ). When the plug connector  70  is further moved downward, the guide  64  of the receptacle shielding member  60  guides the bend  114  of the plug shielding member  110  downward. 
     At this point, the plug projection  94  of the plug contact  90  and the contact portion  45  of the receptacle contact  40  come into contact with each other, and the plug projection  94  causes elastic deformation of the elastic contact piece  44  in an inward direction within the deformation allowing groove  35   a . Then, the plug projection  94  moves downward and rides over the contact portion  45 , causing the contact portion  92  and the contact portion  45  to come into contact with each other. The plug contact  90  and the receptacle contact  40  contact each other at one point where the contact portion  92  and the contact portion  45  contact each other. In particular, a portion of the contact portion  45  most protruding toward the bend  43  and a corresponding part of the contact portion  92  together form such a contact point. In this way, the circuit board CB 2  and the circuit board CB 1  may be electrically conducted via the plug contact  90  and the receptacle contact  40 . 
     Similarly, the first projection  106  and second projection  107  of the plug power-source contact  100  cause elastic deformation of the elastic contact piece  54  in such a manner as to widen the space between the projection  56  and the contact portion  55 . Then, the first projection  106  and the second projection  107  move downward and ride over the projection  56  and the contact portion  55 , respectively. Subsequently, the first projection  106  and the projection  56  are engaged together, and the contact portion  103  and the contact portion  55  come into contact with each other. The plug power-source contact  100  and the receptacle power-source contact  50  contact each other at two points where the first projection  106  and the projection  56  are engaged together and where the contact portion  103  and the contact portion  55  contact each other. In this way, both the circuit board CB 2  and the circuit board CB 1  may receive power supply via the plug power-source contact  100  and the receptacle power-source contact  50 . 
     At this point, the fitting recess  83  is fitted to the fitting projection  33 , and the front wall  82   a  and the rear wall  82   b  of the annular wall  82  are fit to the fitting recess  34  ( FIG. 22 ,  FIG. 23B , and  FIG. 24B ). The plug shielding member  110  is fit to a corresponding receptacle shielding member  60 . In particular, when the plug shielding member  110  and the receptacle shielding member  60  are fit together, the bend  114  is received by the elastic deformation portion  62 . At this point, a space is formed between the outer peripheral shielding portion  111  of the plug shielding member  110  and the outer peripheral shielding portion  61  of the receptacle shielding member  60 . The bend  114  and the elastic deformation portion  62  come into contact with each other at one point on the inner side in a cross-sectional view. In particular, the inner peripheral shielding portion  112  and the top end portion of the elastic deformation portion  62  come into contact with each other at one internal point in the cross-sectional view. 
     The latch  116  of the plug shielding member  110  and the latch  66  of the receptacle shielding member  60  are engaged together. 
     Thus, the receptacle connector  20  and the plug connector  70  are fully coupled to each other. 
     At this point, in the state in which the receptacle shielding member  60  and the plug shielding member  110  are fitted together, they are partially spaced apart from the receptacle insulator  30  and the plug insulator  80 , respectively. In particular, the elastic deformation portion  62  and the guide  64  are spaced apart from the outer peripheral wall  32  and the annular wall  82  in the front-rear direction. The inner peripheral shielding portion  112  is spaced apart from the outer peripheral wall  32  and the annular wall  82  in the front-rear direction. 
     The position of the space between the pair of receptacle shielding members  60  and the position of the space between the pair of plug shielding members  110  are deviated from each other in the transverse direction (see  FIG. 22 ). In particular, the spaces formed in the front-rear direction at the left and right end portions by the pair of receptacle shielding members  60  do not overlap with the spaces formed in the front-rear direction at the left-right end portions by the pair of plug shielding members  110 . That is, the inner side of the receptacle connector  20  and the plug connector  70  coupled to each other is fully enclosed by the pair of receptacle shielding members  60  and the pair of plug shielding members  110 . 
     The connector  10  described above having a reduced profile is capable of reliably bringing the receptacle shielding member  60  and the plug shielding member  110  into contact with each other. Thus, the connector  10  may improve the rigidity of the shielding structure configured by the receptacle shielding member  60  and the plug shielding member  110 . The connector  10  can improve the rigidity of the plug shielding member  110  because the plug shielding member  110  includes the bend  114 . Thus, the connector  10  may prevent curvature, bending, and damage during fitting or mounting. Because the receptacle shielding member  60  includes the elastic deformation portion  62  and the guide  64 , the fit between the plug shielding member  110  and the receptacle shielding member  60  may be further improved. 
     Because the space is formed between the outer peripheral shielding portion  61  and the outer peripheral shielding portion  111  during fitting, the connector  10  may have tolerance for minor positional deviation and bending of the receptacle shielding member  60  or the plug shielding member  110 . That is, the connector  10  may suppress the impact on the fit between the receptacle contact  40  and the plug contact  90  caused by the positional deviation and bending described above during fitting of the receptacle shielding member  60  and the plug shielding member  110 . 
     Because the latch  66  and the latch  116  are engaged together, the connector  10  may firmly couple the receptacle connector  20  and the plug connector  70  together. 
     The receptacle shielding member  60  includes a plurality of through holes  63 . Thus, the connector  10  having a reduced profile may allow the elastic deformation portion  62  to have a sufficient spring length. That is, the elastic deformation portion  62  may have excellent compliance and resistance to plastic deformation. In this way, the connector  10  facilitates the elastic deformation of the elastic deformation portion  62  and improves the fi between the receptacle shielding member  60  and the plug shielding member  110 , as well as preventing damage. The connector  10  includes a plurality of through holes  63  and thus may secure spaces to dispose the mounting portions  65 . 
     The receptacle shielding member  60  includes the mounting portion  65 . Thus, the connector  10  may allow electrical conduction between the receptacle shielding member  60  and the ground pattern of the circuit board CB 1  by soldering. Similarly, the plug shielding member  110  includes the mounting portion  115 . Thus, the connector  10  may allow electrical conduction between the plug shielding member  110  and the ground pattern of the circuit board CB 2  by soldering. Thus, the connector  10  may efficiently prevent external noise from entering the receptacle contact  40  or the plug contact  90  and prevent noise from the receptacle contact  40  and the plug contact  90  from leaking to the outside. 
     In the connector  10 , the mounting portions  65  of the receptacle shielding members  60  extend inward. Thus, the mounting portions  65  may be disposed within the receptacle shielding member  60 . Thus, the connector  10  may efficiently shield the noise. 
     In the connector  10 , the mounting portions  115  of the plug shielding member  110  extend linearly. Thus, during the fitting between the receptacle shielding member  60  and the plug shielding member  110 , the top edge portion of the receptacle shielding member  60  may be positioned as close to the circuit board CB 2  as possible. Accordingly, the connector  10  may enhance the noise-shielding effect. 
     In the connector  10 , the receptacle shielding member  60  and the plug shielding member  110  are partially spaced apart from the receptacle insulator  30  and the plug insulator  80 . Thus, the receptacle contacts  40  and the plug contacts  90  may be arranged within the receptacle shielding member  60  and the plug shielding member  110 . Thus, the connector  10  may enhance the noise-shielding effect. 
     In the connector  10 , the point contact between the elastic deformation portion  62  and the bend  114  enables guiding of the noise to the ground pattern without disturbing the flow of the noise. Thus, the connector  10  may enhance the noise-shielding effect. In the connector  10 , as described above, the space is formed between the outer peripheral shielding portion  61  and the outer peripheral shielding portion  111  during fitting. Thus, the impact on the fitting between the receptacle contact  40  and the plug contact  90  caused by positional deviation and bending may be reduced. 
     In the connector  10 , transverse lengths of the receptacle shielding members  60  and the plug shielding members  110  opposing each other are asymmetric, and the pair of receptacle shielding members  60  and the pair of plug shielding members  110  fully enclose the components therein without forming a space on the outer periphery thereof. Thus, the connector  10  may enhance the noise-shielding effect. In this way, the connector  10  may demonstrate a sufficient noise-shielding effect. 
     In the connector  10 , the outer side of the receptacle shielding member  60  is constituted by the outer peripheral shielding portion  61  with the plate-like shape. Thus, external noise may be received in a plane. In the connector  10 , similarly, the outer side of the plug shielding member  110  is constituted by the outer peripheral shielding portion  111  with the plate-like shape. Thus, external noise may be received in a plane. That is, the connector  10  may have a further stable noise-shielding effect as compared to connectors having an outer side with a complicated shape. 
     When the structures along the front-rear direction and the left-right direction of the receptacle shielding member  60  and the plug shielding member  110  are respective double structures, the noise-shielding effect of the connector  10  can be improved. 
     By virtue of the plug shielding member  110  first contacting the receptacle shielding member  60  upon fitting, the connector  10  may prevent damage to the plug contact  90  or the receptacle contact  40 . Similarly, the connector  10  may also prevent damage to the plug insulator  80  and the receptacle insulator  30 . 
     The top end portion of the fitting portion  68  and the top end portion of the fitting portion  118  form R-shapes and realize a guiding function, by which the fitting property of the connector  10  can be improved. 
     In the connector  10 , by virtue the fitting portion  68  and the fitting portion  118  having approximate U-shapes in cross-section, the portions of the receptacle insulator  30  and the plug insulator  80  corresponding to each other are protected in three directions, and damage to each insulator during fitting can be prevented. 
     The connector  10 , even with reduced profile, facilitates confirmation of its mounting on the circuit boards CB 1  and CB 2 . That is, a person is able to view the mounting portion  41  of the receptacle contact  40 , the mounting portion  51  of the receptacle power-source contact  50 , and the mounting portion  65  of the receptacle shielding member  60  in the up-down direction, and thus may readily confirm whether the soldering has been performed appropriately. Similarly, a person may view the mounting portion  91  of the plug contact  90  and the mounting portion  101  of the plug power-source contact  100  in the up-down direction, and thus may readily confirm whether the soldering has been performed appropriately. 
     The plug contact  90  and the plug power-source contact  100  include the guide  95  and the guide  105 , respectively. Thus, the connector  10  may improve the fitting property. The connector  10  includes the stabilizer  108  and thus may prevent the plug power-source contact  100  from curling up from the molded plug  75  and regulate displacement when the plug power-source contacts  100  is supported by the molded plug  75 . 
     In the connector  10 , by virtue of the plug power-source contact  100  and the receptacle power-source contact  50  being in contact with each other at two points and clamped, the retention force of the receptacle connector  20  and plug connector  70  during fitting can be improved. In the connector  10 , the plug projection  94 , the first projection  106 , and the second projection  107  may realize a displacement-prevention effect by serving as a wall over which the plug connector needs to ride in the removal direction of the plug connector  70 . In other words, the connector  10  may improve the retention force at the time of fitting. 
     The connector  10  may provide a click sensation to a person during fitting by virtue of the plug projection  94 , the first projection  106 , and second projection  107 . That is, the connector  10  contributes to an improvement in operability. 
     When the contact engagement projection  35   b  is positioned between the pair of latches  42  of the receptacle contact  40 , the connector  10  may inhibit rotation of the receptacle contact  40  in the front-rear direction during assembly or during use. That is, the connector  10  may improve the accuracy of the retention position of the receptacle contact  40  with respect to the receptacle insulator  30 . 
     Similarly, the power-source contact engaging projection  36   b  is positioned between the pair of latches  52  of the receptacle power-source contact  50 . Thus, the connector  10  may inhibit rotation of the receptacle power-source contact  50  in the front-rear direction during assembly or during use. That is, the connector  10  may improve the accuracy of the retention position of the receptacle power-source contact  50  with respect to the receptacle insulator  30 . 
     The receptacle contact  40  and the plug contact  90 , even though the connector  10  has a reduced profile, are capable of obtaining excellent transmission characteristics for high frequency signals. 
     That is, in the receptacle contact  40 , because the bend  43  is lower than the contact portion  45 , a sufficient space may be provided between the bend  43  and the mounting portion  91  during fitting. Thus, the receptacle contact  40  may suppress crosstalk by inhibiting electrical coupling to the plug contact  90 . 
     Because the elastic contact piece  44  is wider than the bend  43 , the receptacle contact  40  may improve the transmission characteristics for high frequency signals. When the distal end of the elastic contact piece  44  is positioned at a height similar to the height of the contact portion  45 , the receptacle contact  40  may improve the transmission characteristics of high-frequency signals in a similar manner. 
     In the plug contact  90 , by virtue of the distal end position of the approximate U-shape of the extending portion  93  being positioned at a height similar to the top end position of the contact portion  92 , the plug contact  90 , stub components can be reduced and the transmission characteristics of high-frequency signals can be improved. 
     By virtue of the plug contact  90  and the receptacle contact  40  contacting each other at a single point at the time of fitting, disturbance of a current for a high frequency signal is suppressed, and the transmission characteristics can be improved. 
     In this way, high-speed communication with excellent transmission characteristics are enabled between an electronic device (e.g., a CPU, a controller, a memory, etc.) mounted on the circuit board CB 1  and an electronic device (e.g., a high-performance module, a semiconductor, a large capacity memory, etc.) mounted on the circuit board CB 2 . 
     It will be apparent to those who are skilled in the art that the present disclosure may be realized in forms other than the embodiment described above, without departing from the spirit and the fundamental characteristics of the present disclosure. Accordingly, the foregoing description is merely illustrative and not limiting in any manner. The scope of the present disclosure is defined by the appended claims, not by the foregoing description. Among all modifications, those within a range of the equivalent to the present disclosure shall be considered as being included in the present disclosure. 
     For example, the configurations of the shielding members between the receptacle connector  20  and plug connector  70  may be interchanged. 
     The latch  66  may be formed as a recess, and the latch  116  may be formed as a claw shape. 
     In the connector  10 , one of the outer peripheral shielding portion  111  and the inner shielding portion  112  may be omitted from the plug shielding member  110 . In the connector  10 , on the other hand, one or more shielding members other than the outer peripheral shielding portion  111  and the inner shielding portion  112  may be provided side by side in the front-rear direction with respect to the outer peripheral shielding portion  111  and the inner shielding portion  112 . In the connector  10 , similarly, one or more shielding members other than the outer peripheral shielding portion  61  may be provided side by side in the front-rear direction with respect to the outer peripheral shielding portion  61 . 
     The bases of the receptacle shielding member  60  and the plug shielding member  110  may be made of resins, and the surfaces of the bases (the resins) may be plated or coated with an electrically conductive material. 
     REFERENCE SIGNS LIST 
     
         
           10  connector 
           20  receptacle connector (first connector) 
           30  receptacle insulator (first insulator) 
           31  bottom plate 
           32  outer peripheral wall 
           32   a  front wall 
           32   b  rear wall 
           33  fitting projection 
           34  fitting recess 
           35  contact fitting groove 
           35   a  deformation allowing groove 
           35   b  contact engaging projection 
           36  power-source contact fitting groove 
           36   a  deformation allowing groove 
           36   b  power-source contact engaging projection 
           37  support 
           40  receptacle contact (first contact) 
           41  mounting portion 
           42  latch 
           43  bend 
           44  elastic contact piece 
           45  contact portion (first contact portion) 
           50  receptacle power-source contact 
           51  mounting portion 
           52  latch 
           53  bend 
           54  elastic contact piece 
           55  contact portion 
           56  projection 
           60  receptacle shielding member (first shielding member) 
           61  outer peripheral shielding portion (first outer peripheral shielding portion) 
           62  elastic deformation portion 
           63  through hole 
           64  guide 
           65  mounting portion (first mounting portion) 
           66  latch (first engaging portion) 
           67  transverse portion 
           68  fitting portion 
           70  plug connector (second connector) 
           75  molded plug 
           80  plug insulator (second insulator) 
           81  bottom plate 
           82  annular wall 
           82   a  front wall 
           82   b  rear wall 
           83  fitting recess 
           84  contact supporting groove 
           85  power-source contact fitting groove 
           86  supporting portion 
           90  plug contact (second contact) 
           91  mounting portion 
           92  contact portion (second contact portion) 
           93  extending portion 
           94  plug projection 
           95  guide 
           100  plug power-source contact 
           101  mounting portion 
           102  extending portion 
           103  contact portion 
           104  locking portion 
           105  guide 
           106  first projection 
           107  second projection 
           108  stabilizer 
           110  plug shielding member (second shielding member) 
           111  outer peripheral shielding portion (second outer peripheral shielding portion) 
           112  inner peripheral side shielding portion 
           113  curved connecting portion 
           114  bend 
           115  mounting portion (second mounting portion) 
           116  latch (second engaging portion) 
           117  transverse portion 
           118  mounting portion 
         CB 1  circuit board (first circuit board) 
         CB 2  circuit board (second circuit board) 
         S 1  space 
         S 2  space