Patent Publication Number: US-9425526-B2

Title: Connector set and connector

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application claims benefit of priority to Japanese Patent Application No. 2014-116841 filed Jun. 5, 2014, the entire content of which is incorporated herein by reference. 
     TECHNICAL FIELD 
     The present disclosure relates to connector sets and connectors, and particularly relates to connector sets and connectors used to transmit high-frequency signals. 
     BACKGROUND 
     A first connector in a board-to-board connector disclosed in Japanese Unexamined Patent Application Publication No. 2012-79684 is known as an example of a past disclosure related to connector sets. The first connector includes a first housing, a plurality of first terminals, and two first reinforcing fittings. The first housing is manufactured from a resin, for example, and is a plate-shaped member having a rectangular shape. The plurality of first terminals are provided along the two longer sides of the first housing. The two first reinforcing fittings are provided at both ends of the first housing in the longer direction thereof. 
     The stated first connector is used by being coupled to a second connector. The first terminals are connected to a signal potential or a ground potential, and the first reinforcing fittings are connected to the ground potential. Meanwhile, the coupling between the first connector and the second connector is held by the two first reinforcing fittings each engaging with the second connector. 
     Incidentally, in the first connector disclosed in Japanese Unexamined Patent Application Publication No. 2012-79684, there is a risk that the first terminals will be damaged. To describe this in detail, the first connector engages with the second connector using the two first reinforcing fittings. The two first reinforcing fittings are located at both ends of the first housing in the longer direction thereof. As such, when coupling the first connector and the second connector, positioning in the longer direction of the first housing is achieved by the two first reinforcing fittings making contact with the second connector. 
     However, in the first connector disclosed in Japanese Unexamined Patent Application Publication No. 2012-79684, the first reinforcing fittings do not contribute to positioning in a shorter direction of the first housing. As such, the positioning in the shorter direction of the first housing is achieved by the first terminals making contact with second terminals in the second connector. Accordingly, during the positioning, the first terminals and the second terminals scrape against each other and the like, which places a large force on the first terminals and the second terminals. There is thus a risk that the first terminals will be damaged. 
     SUMMARY 
     Accordingly, it is an object of the present disclosure to provide a connector set and a connector capable of suppressing a connection terminal from being damaged when coupling a first connector and a second connector. 
     A connector set according to an aspect of the present disclosure is a connector set including a first connector and a second connector. The first connector has a plurality of first connection terminals, each having a first contact portion, and a first anchoring terminal connected to a ground potential. The second connector has a plurality of second connection terminals, each having a second contact portion, and a second anchoring terminal connected to a ground potential. When the first connector and the second connector are coupled, the plurality of first connection terminals and the plurality of second connection terminals respectively make contact at the first contact portions and the second contact portions. The plurality of first contact portions and the plurality of second contact portions are, when viewed from a first direction, enclosed in a rectangular ring having a first corner portion located at one side of a second direction and at one side in a third direction orthogonal to the second direction and a second corner portion located at the other side of the second direction and the other side of the third direction. An outer peripheral surface of the first anchoring terminal has, when viewed from the first direction, a first surface that faces the one side of the second direction and a second surface that faces the one side of the third direction in the first corner portion, and a third surface that faces the other side of the second direction and a fourth surface that faces the other side of the third direction in the second corner portion. An inner peripheral surface of the second anchoring terminal has, when viewed from the first direction, a fifth surface that faces the other side of the second direction and a sixth surface that faces the other side of the third direction in the first corner portion, and a seventh surface that faces the one side of the second direction and an eighth surface that faces the one side of the third direction in the second corner portion. The first surface to the fourth surface make contact with the fifth surface to the eighth surface, respectively, when the first connector and the second connector are coupled. 
     A first connector according to another aspect of the present disclosure is a first connector that couples with a second connector including a plurality of second connection terminals and a second anchoring terminal. The first connector includes a plurality of first connection terminals and a first anchoring terminal connected to a ground potential. When the first connector and the second connector are coupled, the plurality of first connection terminals make contact with the respective second connection terminals at first contact portions. The first contact portions of the plurality of first connection terminals are, when viewed from a first direction, enclosed in a rectangular ring having a first corner portion located at one side of a second direction and at one side in a third direction orthogonal to the second direction and a second corner portion located at the other side of the second direction and the other side of the third direction. An outer peripheral surface of the first anchoring terminal has, when viewed from the first direction, a first surface that faces the one side of the second direction and a second surface that faces the one side of the third direction in the first corner portion, and a third surface that faces the other side of the second direction and a fourth surface that faces the other side of the third direction in the second corner portion. The first surface to the fourth surface make contact with the second anchoring terminal when the first connector and the second connector are coupled. 
     According to the present disclosure, a connection terminal can be suppressed from being damaged when the first connector and the second connector are coupled. 
     Other features, elements, characteristics and advantages of the present disclosure will become more apparent from the following detailed description of preferred embodiments of the present disclosure with reference to the attached drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an external perspective view of a female connector. 
         FIG. 2A  is a diagram illustrating a view of the female connector from above. 
         FIG. 2B  is a diagram illustrating a view of the female connector from below. 
         FIG. 2C  is a diagram illustrating a view of the female connector from the front. 
         FIG. 3A  is an external perspective view of an anchoring terminal  12 . 
         FIG. 3B  is a diagram illustrating a view of the anchoring terminal  12  from above. 
         FIG. 4  is an external perspective view of an insulative member  16 . 
         FIG. 5  is an external perspective view of connection terminals  14   a - 14   c.    
         FIG. 6  is a perspective view of the female connector during manufacture. 
         FIG. 7  is a perspective view of the female connector during manufacture. 
         FIG. 8  is a perspective view of the female connector during manufacture. 
         FIG. 9  is a perspective view of the female connector during manufacture. 
         FIG. 10  is an external perspective view of a male connector. 
         FIG. 11A  is a diagram illustrating a view of the male connector, facing toward the male connector from the female connector side along an engagement direction from below. 
         FIG. 11B  is a diagram illustrating a view of the male connector from above. 
         FIG. 11C  is a diagram illustrating a view of the male connector from the front. 
         FIG. 12A  is an external perspective view of an anchoring terminal  52 . 
         FIG. 12B  is a diagram illustrating a view of the anchoring terminal  52  from below. 
         FIG. 13  is an external perspective view of an insulative member  56 . 
         FIG. 14  is an external perspective view of connection terminals  54   a - 54   c.    
         FIG. 15  is a perspective view of the male connector during manufacture. 
         FIG. 16  is a perspective view of the male connector during manufacture. 
         FIG. 17  is a perspective view of the male connector during manufacture. 
         FIG. 18A  is an external perspective view of a connector set. 
         FIG. 18B  is a diagram illustrating a view of the connector set from above. 
         FIG. 18C  is a diagram illustrating a view of the connector set from the front. 
         FIG. 18D  is a cross-sectional structural diagram illustrating the connector set along a line  1 - 1  in  FIG. 18C . 
         FIG. 18E  is a cross-sectional structural diagram illustrating the connector set along a line  2 - 2  in  FIG. 18C ; 
         FIG. 19A  is a diagram illustrating a view of the connector set from the front; 
         FIG. 19B  is a cross-sectional structural diagram illustrating the connector set along a line  3 - 3  in  FIG. 19A ; 
         FIG. 19C  is a cross-sectional structural diagram illustrating the connector set along a line  4 - 4  in  FIG. 19A ; 
         FIG. 20A  is a diagram illustrating a view of the connector set from the front; 
         FIG. 20B  is a cross-sectional structural diagram illustrating the connector set  100  along a line  5 - 5  in  FIG. 20A ; 
         FIG. 20C  is a cross-sectional structural diagram illustrating the connector set along a line  6 - 6  in  FIG. 20A ; 
         FIG. 21A  is a diagram illustrating a view of the connector set from the front. 
         FIG. 21B  is a cross-sectional structural diagram illustrating the connector set along a line  7 - 7  in  FIG. 21A . 
         FIG. 21C  is a cross-sectional structural diagram illustrating the connector set along a line  8 - 8  in  FIG. 21A . 
     
    
    
     DETAILED DESCRIPTION 
     A male connector, a female connector, and a connector set according to an embodiment of the present disclosure will be described hereinafter. 
     Configuration of Female Connector 
     The configuration of a female connector (a first connector) in the connector set will be described first with reference to the drawings.  FIG. 1  is an external perspective view of a female connector  10 .  FIG. 2A  is a diagram illustrating a view of the female connector  10 , facing toward the female connector  10  from a male connector  50  side along an engagement direction from above.  FIG. 2B  is a diagram illustrating a view of the female connector  10  from below.  FIG. 2C  is a diagram illustrating a view of the female connector  10  from the front.  FIG. 3A  is an external perspective view of an anchoring terminal  12 .  FIG. 3B  is a diagram illustrating a view of the anchoring terminal  12  from above.  FIG. 4  is an external perspective view of an insulative member  16 .  FIG. 5  is an external perspective view of connection terminals  14   a - 14   c.    
     In the following, a direction of a center axis of the substantially ring-shaped anchoring terminal  12  shown in  FIG. 1  will be called an up-down direction (a first direction). When the female connector  10  is viewed from above, a longer direction of the anchoring terminal  12  that has a substantially rectangular shape is defined as a left-right direction (a third direction), and a shorter direction of the anchoring terminal  12  is defined as a front-rear direction (a second direction). 
     The female connector  10  is mounted on a circuit board, a flexible wire, or the like, for example, and includes the anchoring terminal  12 , the connection terminals  14   a - 14   c , and the insulative member  16 , as illustrated in  FIG. 1  and  FIGS. 2A-2C . 
     The anchoring terminal  12  is a conductor that is connected to a ground potential, and as illustrated in  FIGS. 3A and 3B , has a shape that, when viewed from above, is a substantially rectangular ring with a part thereof cut out. The longer sides of the approximately rectangular ring extend in the left-right direction, whereas the shorter sides of the approximately rectangular ring extend in the front-rear direction. The anchoring terminal  12  is manufactured by bending a single metal plate, and is manufactured from, for example, a copper-based material such as phosphor bronze or the like. 
     The anchoring terminal  12  includes a main body portion  21 , projection portions  24   a  and  24   b , and a connecting portion  26 . The main body portion  21  has a lower portion  20  and upper portions  22   a - 22   d . The lower portion  20  is a substantially band-shaped conductor that encircles the perimeter of the center axis that extends in the up-down direction, and when viewed from above, has a shape in which part of a substantially rectangular ring has a part thereof cut out. In the present embodiment, the lower portion  20  has a shape in which part of the front-side longer side is cut out. However, the lower portion  20  still has a right-side shorter side, a left-side shorter side, a rear-side longer side, and part of the front-side longer side. In other words, the lower portion  20  has portions that follow the four sides of the substantially rectangular ring shape. In addition, the four corners of the lower portion  20  are rounded. 
     The upper portion  22   a  is connected to the top of the rear-left corner of the lower portion  20 , and configures an upper end portion of the main body portion  21 . When viewed from above, the upper portion  22   a  is substantially L-shaped. Note that the corner of the upper portion  22   a  is rounded. An inner peripheral surface of the upper portion  22   a  includes a surface S 11  that faces the upper-front, and a surface S 12  that faces the upper-right. Furthermore, the surface S 11  and the surface S 12  configure a convex curved surface. 
     Meanwhile, the surface S 11  and the surface S 12  project toward an inner side portion of the substantially rectangular ring shape, relative to the lower portion  20 . As a result, a protruding portion Pa is provided at the rear-left corner of the inner peripheral surface of the main body portion  21 . 
     The upper portion  22   b  is connected to the top of the rear-right corner of the lower portion  20 , and configures an upper end portion of the main body portion  21 . When viewed from above, the upper portion  22   b  is substantially L-shaped. Note that the corner of the upper portion  22   b  is rounded. An inner peripheral surface of the upper portion  22   b  includes a surface S 13  that faces the upper-front, and a surface S 14  that faces the upper-left. Furthermore, the surface S 13  and the surface S 14  configure a convex curved surface. 
     Meanwhile, the surface S 13  and the surface S 14  project toward the inner side portion of the substantially rectangular ring shape, relative to the lower portion  20 . As a result, a protruding portion Pb is provided at the rear-right corner of the inner peripheral surface of the main body portion  21 . 
     The upper portion  22   c  is connected to the top of the front-left corner of the lower portion  20 , and configures an upper end portion of the main body portion  21 . When viewed from above, the upper portion  22   c  is substantially L-shaped. Note that the corner of the upper portion  22   c  is rounded. An inner peripheral surface of the upper portion  22   c  includes a surface S 15  that faces the upper-rear, and a surface S 16  that faces the upper-right. Furthermore, the surface S 15  and the surface S 16  configure a convex curved surface. 
     Meanwhile, the surface S 15  and the surface S 16  project toward the inner side portion of the substantially rectangular ring shape, relative to the lower portion  20 . As a result, a protruding portion Pc is provided at the front-left corner of the inner peripheral surface of the main body portion  21 . 
     The upper portion  22   d  is connected to the top of the front-right corner of the lower portion  20 , and configures an upper end portion of the main body portion  21 . When viewed from above, the upper portion  22   d  is substantially L-shaped. Note that the corner of the upper portion  22   d  is rounded. An inner peripheral surface of the upper portion  22   d  includes a surface S 17  that faces the upper-rear, and a surface S 18  that faces the upper-left. Furthermore, the surface S 17  and the surface S 18  configure a convex curved surface. 
     Meanwhile, the surface S 17  and the surface S 18  project toward the inner side portion of the substantially rectangular ring shape, relative to the lower portion  20 . As a result, a protruding portion Pd is provided at the front-right corner of the inner peripheral surface of the main body portion  21 . 
     The projection portion  24   a  is connected to a lower end portion of the left shorter side of the lower portion  20 , and is bent toward the right, relative to the lower portion  20 . The projection portion  24   b  is connected to a lower end portion of the right shorter side of the lower portion  20 , and is bent toward the left, relative to the lower portion  20 . Accordingly, when viewed from above, the projection portions  24   a  and  24   b  project toward the inner side portion of the substantially rectangular ring. 
     The connecting portion  26  is connected to a lower end portion of the rear longer side of the lower portion  20 , and is bent toward the rear relative to the lower portion  20 . 
     The insulative member  16  is a block having a substantially octagonal shape when viewed from above, and is manufactured from an insulative resin such as a liquid-crystal polymer or the like. The insulative member  16  holds the anchoring terminal  12  and the connection terminals  14   a - 14   c . Grooves G 1 -G 3  that extend in the front-rear direction are provided in an upper surface of the insulative member  16 . The grooves G 1 -G 3  are arranged in that order from the left side to the right side. The grooves G 1 -G 3  pass through the insulative member  16  in the up-down direction. As illustrated in  FIGS. 2A and 2B , the insulative member  16  is enclosed within the main body portion  21  when viewed from above. Meanwhile, leading end portions of the projection portions  24   a  and  24   b  penetrate the insulative member  16 . In other words, the insulative member  16  holds the anchoring terminal  12  only on the projection portions  24   a  and  24   b . As a result, a gap is provided between the main body portion  21  and the insulative member  16  when viewed from above. The connection terminals being connected to a signal potential refers to the connection terminals being hard-wired so that a signal is transmitted therethrough. 
     Each of the connection terminals  14   a - 14   c  is a conductor that is connected to a signal potential or a ground potential. In the present embodiment, the connection terminals  14   a  and  14   c  located on both ends in the left-right direction are signal terminals to which a signal is supplied. Meanwhile, the connection terminal  14   b  is a ground terminal that is connected to a ground potential. Accordingly, with the connection terminals  14   a - 14   c , the signal terminals and the ground terminal are disposed in an alternating manner. As illustrated in  FIG. 5 , the connection terminals  14   a - 14   c  are manufactured by bending a single substantially rod-shaped conductor, and are manufactured from a copper-based material such as phosphor bronze or the like. The connection terminals  14   a - 14   c  include connection portions  30   a - 30   c  and contact portions  32   a - 32   c.    
     When viewed from the right, the contact portions  32   a - 32   c  have substantially U shapes whose upper sides are open. End portions of the contact portions  32   a - 32   c  on the upper rear are bent slightly toward the rear. End portions of the contact portions  32   a - 32   c  on the upper front are bent slightly toward the front. The connection portions  30   a - 30   c  are connected to end portions on the upper fronts of the contact portions  32   a - 32   c , respectively. The connection portions  30   a - 30   c  are each substantially L-shaped when viewed from the right, and extend downward from the upper-front end portions of the contact portions  32   a - 32   c  before extending toward the front. In other words, the connection terminals  14   a - 14   c  extend toward the front from the contact portions  32   a - 32   c , respectively, when viewed from above. 
     The connection terminals  14   a - 14   c  configured as described above are attached to the grooves G 1 -G 3 , respectively. Specifically, the connection terminals  14   a - 14   c  are inserted into the grooves G 1 -G 3 , respectively, from below. As a result, the contact portions  32   a - 32   c  of the connection terminals  14   a - 14   c  are arranged in that order, in a single row, from the left to the right within the substantially rectangular ring, when viewed from above. 
     Meanwhile, the connection portions  30   a - 30   c  of the connection terminals  14   a - 14   c  project toward the front below the insulative member  16 . Here, when viewed from above, part of the longer side on the front of the anchoring terminal  12  is cut out. As illustrated in  FIGS. 2A and 2B , the connection terminals  14   a - 14   c  are drawn out to an outer side portion of the substantially rectangular ring (that is, the anchoring terminal  12 ) via the cut-out portion in the anchoring terminal  12 , when viewed from above. 
     Meanwhile, as illustrated in  FIG. 2B , a minimum distance D 1  between the lower portion  20  and the connection terminal  14   a  and a minimum distance D 2  between the projection portion  24   a  and the connection terminal  14   a  are substantially equal, when viewed from below. Likewise, the minimum distance D 1  between the lower portion  20  and the connection terminal  14   c  and the minimum distance D 2  between the projection portion  24   b  and the connection terminal  14   c  are substantially equal. Furthermore, a distance D 3  between the connection terminal  14   a  and the connection terminal  14   b  and the distance D 3  between the connection terminal  14   b  and the connection terminal  14   c  are substantially equal to the minimum distances D 1  and D 2 . 
     The female connector  10  configured as described thus far is mounted on a circuit board. Specifically, the projection portions  24   a  and  24   b , the connecting portion  26 , and the connection portions  30   a - 30   c  are soldered to land electrodes provided on the circuit board. 
     Method for Manufacturing Female Connector 
     Next, a method for manufacturing the female connector  10  will be described with reference to the drawings.  FIGS. 6 through 9  are perspective views of the female connector  10  during manufacture. 
     First, as illustrated in  FIG. 6 , the anchoring terminal  12  is prepared. The anchoring terminal  12  is manufactured by, for example, bending a copper-based material such as phosphor bronze or the like. 
     Next, as illustrated in  FIG. 7 , the insulative member is formed through injection molding. At this time, the anchoring terminal  12  is disposed so that the leading end portions of the projection portions  24   a  and  24   b  of the anchoring terminal  12  are embedded in the insulative member  16 , and the insulative member  16  is formed integrally with the anchoring terminal  12  through insert molding. 
     Next, as illustrated in  FIGS. 8 and 9 , the connection terminals  14   a - 14   c  are inserted into the grooves G 1 -G 3 , respectively, from below, and are attached to the insulative member  16 . Note that the connection terminals  14   a - 14   c  are not formed integrally with the insulative member  16 . Accordingly, the connection terminals  14   a - 14   c  can deform slightly through their own elasticity. The female connector  10  is completed through the aforementioned process. 
     Configuration of Male Connector 
     The configuration of a male connector (a second connector) in the connector set will be described next with reference to the drawings.  FIG. 10  is an external perspective view of the male connector  50 .  FIG. 11A  is a diagram illustrating a view of the male connector  50 , facing toward the male connector  50  from the female connector  10  side along the engagement direction from below.  FIG. 11B  is a diagram illustrating a view of the male connector  50  from above.  FIG. 11C  is a diagram illustrating a view of the male connector  50  from the front.  FIG. 12A  is an external perspective view of an anchoring terminal  52 .  FIG. 12B  is a diagram illustrating a view of the anchoring terminal  52  from below.  FIG. 13  is an external perspective view of an insulative member  56 .  FIG. 14  is an external perspective view of connection terminals  54   a - 54   c.    
     In the following, a direction in which the male connector  50  illustrated in  FIG. 10  engages with the female connector  10  is taken as the up-down direction. However, note that in  FIG. 10 , the top and bottom are inverted relative to  FIG. 1 . Meanwhile, when the male connector  50  is viewed from below, the longer direction is defined as the left-right direction and the shorter direction is defined as the front-rear direction. However, note that in  FIG. 10 , the front-rear direction is also inverted relative to  FIG. 1 . In other words, the front-rear direction, left-right direction, and up-down direction axes in  FIG. 10  correspond to the front-rear direction, left-right direction, and up-down direction axes in  FIG. 1  being rotated by 180 degrees central to the left-right direction axis. 
     The male connector  50  is mounted on a circuit board, a flexible wire, or the like, for example, and includes the anchoring terminal  52 , the connection terminals  54   a - 54   c , and the insulative member  56 , as illustrated in  FIG. 10  and  FIGS. 11A-11C . 
     The anchoring terminal  52  is a conductor that is connected to a ground potential, and as illustrated in  FIGS. 12A and 12B , has a shape that, when viewed from below, is a substantially rectangular ring with a part thereof cut out. The longer sides of the approximately rectangular ring corresponding to the substantially rectangular anchoring terminal  52  extend in the left-right direction, whereas the shorter sides of the approximately rectangular ring extend in the front-rear direction. The anchoring terminal  52  is manufactured by bending a single metal plate, and is manufactured from, for example, a copper-based material such as phosphor bronze or the like. 
     The anchoring terminal  52  includes a main body portion  61 , projection portions  64   a  and  64   b , and a connecting portion  66 . The main body portion  61  has an upper portion  60  and lower portions  62   a - 62   d . The upper portion  60  is a substantially band-shaped conductor that encircles the perimeter of the center axis that extends in the up-down direction, and when viewed from above, has a shape in which part of a substantially rectangular ring has a part thereof cut out. In the present embodiment, the upper portion  60  has a shape in which part of the rear-side longer side is cut out. However, the upper portion  60  still has a right-side shorter side, a left-side shorter side, a front-side longer side, and part of the rear-side longer side. In other words, the upper portion  60  has portions that follow the four sides of the substantially rectangular ring shape. In addition, the four corners of the upper portion  60  are rounded. 
     Meanwhile, as illustrated in  FIG. 12A , recessed portions Ga-Gd are provided in the respective four corners of an outer peripheral surface of the upper portion  60  (the recessed portion Gc is not illustrated). More specifically, the recessed portion Ga is provided in a rear-left corner in the outer peripheral surface of the upper portion  60 . The recessed portion Gb is provided in a rear-right corner in the outer peripheral surface of the upper portion  60 . The recessed portion Gc is provided in a front-left corner in the outer peripheral surface of the upper portion  60 . The recessed portion Gd is provided in a front-right corner in the outer peripheral surface of the upper portion  60 . 
     The lower portion  62   a  is connected to the bottom of the rear-left corner of the upper portion  60 , and configures a lower end portion of the main body portion  61 . The lower portion  62   a  has a substantially oval shape obtained by combining two quarter-circles, when viewed from below. An outer peripheral surface of the lower portion  62   a  includes a surface S 1  that faces the lower-rear and a surface S 2  that faces the lower-left. Furthermore, the surface S 1  and the surface S 2  configure a single convex curved surface. 
     The lower portion  62   b  is connected to the bottom of the rear-right corner of the upper portion  60 , and configures a lower end portion of the main body portion  61 . The lower portion  62   b  has a substantially oval shape obtained by combining two quarter-circles, when viewed from below. An outer peripheral surface of the lower portion  62   b  includes a surface S 3  that faces the lower-rear and a surface S 4  that faces the lower-right. Furthermore, the surface S 3  and the surface S 4  configure a single convex curved surface. 
     The lower portion  62   c  is connected to the bottom of the front-left corner of the upper portion  60 , and configures a lower end portion of the main body portion  61 . The lower portion  62   c  has a substantially oval shape obtained by combining two quarter-circles, when viewed from below. An outer peripheral surface of the lower portion  62   c  includes a surface S 5  that faces the lower-front and a surface S 6  that faces the lower-left. Furthermore, the surface S 5  and the surface S 6  configure a single convex curved surface. 
     The lower portion  62   d  is connected to the bottom of the front-right corner of the upper portion  60 , and configures a lower end portion of the main body portion  61 . The lower portion  62   d  has a substantially oval shape obtained by combining two quarter-circles, when viewed from below. An outer peripheral surface of the lower portion  62   d  includes a surface S 7  that faces the lower-front and a surface S 8  that faces the lower-right. Furthermore, the surface S 7  and the surface S 8  configure a single convex curved surface. 
     The projection portion  64   a  is connected to an upper end portion of the left shorter side of the upper portion  60 , and is bent toward the right, relative to the upper portion  60 . The projection portion  64   b  is connected to an upper end portion of the right shorter side of the upper portion  60 , and is bent toward the left, relative to the upper portion  60 . Accordingly, when viewed from above, the projection portions  64   a  and  64   b  project toward the inner side portion of the substantially rectangular ring. 
     The connecting portion  66  is connected to the upper end portion of the front longer side of the upper portion  60 , and is bent toward the front relative to the upper portion  60 . 
     The insulative member  56  is a block having a substantially octagonal shape when viewed from above, and is manufactured from an insulative resin such as a liquid-crystal polymer or the like. The insulative member  56  holds the anchoring terminal  52  and the connection terminals  54   a - 54   c . A substantially strip-shaped projection  57  that extends in the left-right direction is provided in a bottom surface of the insulative member  56 . Furthermore, grooves G 11 -G 13  that extend in the front-rear direction are provided in the projection  57 . The grooves G 11 -G 13  are arranged in that order from the left side to the right side. As illustrated in  FIGS. 11A and 11B , the insulative member  56  is enclosed within the main body portion  61  when viewed from above. Meanwhile, leading end portions of the projection portions  64   a  and  64   b  penetrate the insulative member  56 . In other words, the insulative member  56  holds the anchoring terminal  52  only via the projection portions  64   a  and  64   b . As a result, a gap is provided between the main body portion  61  and the insulative member  56  when viewed from above. 
     Each of the connection terminals  54   a - 54   c  is a conductor that is connected to a signal potential or a ground potential. In the present embodiment, the connection terminals  54   a  and  54   c  located on both ends in the left-right direction are signal terminals to which a signal is supplied. Meanwhile, the connection terminal  54   b  is a ground terminal to which a ground potential is connected. Accordingly, with the connection terminals  54   a - 54   c , the signal terminals and the ground terminal are disposed in an alternating manner. As illustrated in  FIG. 14 , the connection terminals  54   a - 54   c  are manufactured by bending a single substantially rod-shaped conductor, and are manufactured from a copper-based material such as phosphor bronze or the like. The connection terminals  54   a - 54   c  include connection portions  70   a - 70   c  and contact portions  72   a - 72   c.    
     When viewed from the right, the contact portions  72   a - 72   c  have substantially U shapes whose upper sides are open. The connection portions  70   a - 70   c  are connected to end portions on the upper rear of the contact portions  72   a - 72   c , respectively. The connection portions  70   a - 70   c  each have substantially straight line shapes when viewed from the right, and extend rearward from the upper-rear end portions of the contact portions  72   a - 72   c , respectively. In other words, the connection terminals  54   a - 54   c  extend toward the rear from the contact portions  72   a - 72   c , respectively, when viewed from below. 
     The connection terminals  54   a - 54   c  configured as described above are attached to the grooves G 11 -G 13 , respectively. Specifically, the connection terminals  54   a - 54   c  are attached to the insulative member  56  so that following end portions of the connection portions  70   a - 70   c  and the outer peripheral surfaces of the contact portions  72   a - 72   c  are exposed from the insulative member  56 . As a result, the contact portions  72   a - 72   c  of the connection terminals  54   a - 54   c  are arranged in that order, in a single row, from the left to the right within the substantially rectangular ring, when viewed from below. 
     Meanwhile, the connection portions  70   a - 70   c  of the connection terminals  54   a - 54   c  project toward the rear below the insulative member  56 . Here, when viewed from above, part of the longer side on the rear of the anchoring terminal  52  is cut out. As illustrated in  FIGS. 11A and 11B , the connection terminals  54   a - 54   c  are drawn out to an outer side portion of the substantially rectangular ring (that is, the anchoring terminal  52 ) via the cut-out portion in the anchoring terminal  52 , when viewed from above. 
     Meanwhile, as illustrated in  FIG. 11B , a minimum distance D 11  between the upper portion  60  and the connection terminal  54   a  and a minimum distance D 12  between the projection portion  64   a  and the connection terminal  54   a  are substantially equal, when viewed from above. Likewise, the minimum distance D 11  between the upper portion  60  and the connection terminal  54   c  and the minimum distance D 12  between the projection portion  64   b  and the connection terminal  54   c  are substantially equal. Furthermore, a distance D 13  between the connection terminal  54   a  and the connection terminal  54   b  and the distance D 13  between the connection terminal  54   b  and the connection terminal  54   c  are substantially equal to the minimum distances D 11  and D 12 . 
     The male connector  50  configured as described thus far is mounted on a circuit board. Specifically, the projection portions  64   a  and  64   b , the connecting portion  66 , and the connection portions  70   a - 70   c  are soldered to land electrodes provided on the circuit board. 
     Method for Manufacturing Male Connector 
     Next, a method for manufacturing the male connector  50  will be described with reference to the drawings.  FIGS. 15 through 17  are perspective views of the male connector  50  during manufacture. 
     First, as illustrated in  FIG. 15 , the anchoring terminal  52  is prepared. The anchoring terminal  52  is manufactured by, for example, bending a copper-based material such as phosphor bronze or the like. 
     Next, as illustrated in  FIG. 16 , the connection terminals  54   a - 54   c  are disposed within the anchoring terminal  52 . 
     Next, as illustrated in  FIG. 17 , the insulative member  56  is formed through injection molding. At this time, the insulative member  56  is formed integrally with the anchoring terminal  52  and the connection terminals  54   a - 54   c  through insert molding so that the leading end portions of the projection portions  64   a  and  64   b  of the anchoring terminal  52  are embedded in the insulative member  56  and the connection terminals  54   a - 54   c  are partially embedded in the insulative member  56 . The connection terminals  54   a - 54   c  are formed integrally with the insulative member  16  and thus experience almost no deformation. The male connector  50  is completed through the aforementioned process. 
     Configuration of a Connector Set 
     Next, the configuration of a connector set  100  will be described with reference to the drawings.  FIG. 18A  is an external perspective view of the connector set  100 .  FIG. 18B  is a diagram illustrating a view of the connector set  100  from above.  FIG. 18C  is a diagram illustrating a view of the connector set  100  from the front.  FIG. 18D  is a cross-sectional structural diagram illustrating the connector set  100  along a line  1 - 1  in  FIG. 18C .  FIG. 18E  is a cross-sectional structural diagram illustrating the connector set  100  along a line  2 - 2  in  FIG. 18C . 
     The connector set  100  includes the female connector  10  and the male connector  50 , and relays the transmission of high-frequency signals (approximately 6 GHz) between circuit boards. As illustrated in  FIGS. 18A-18E , the anchoring terminal  52  of the male connector  50  is inserted into the anchoring terminal  12  of the female connector  10  from above when coupling the female connector  10  and the male connector  50 . The inner peripheral surface of the lower portion  20  in the female connector  10  is formed to be slightly smaller than the outer peripheral surface of the upper portion  60  in the male connector  50 , when viewed from above. Accordingly, the outer peripheral surface of the upper portion  60  in the anchoring terminal  52  presses against the inner peripheral surface of the lower portion  20  in the anchoring terminal  12 . Furthermore, the protruding portions Pa-Pd engage with the recessed portions Ga-Gd, respectively. As a result, the anchoring terminals  12  and  52  maintain the coupling between the female connector  10  and the male connector  50 . 
     The contact portions  72   a - 72   c  of the connection terminals  54   a - 54   c  are inserted into the contact portions  32   a - 32   c  of the connection terminals  14   a - 14   c , respectively. Specifically, the contact portions  72   a - 72   c  are inserted into the contact portions  32   a - 32   c  from above, via respective upward-facing openings in the contact portions  32   a - 32   c . As described earlier, the insulative member  16  is not formed integrally with the contact portions  32   a - 32   c . Accordingly, when the contact portions  72   a - 72   c  are inserted into the contact portions  32   a - 32   c , respectively, the contact portions  32   a - 32   c  are able to elastically deform and widen slightly in the front-rear direction. As a result, the inner peripheral surfaces of the contact portions  32   a - 32   c  press against the outer peripheral surfaces of the contact portions  72   a - 72   c , respectively. 
     As described above, the connection terminal  14   a  and the connection terminal  54   a  make contact at the contact portions  32   a  and  72   a  when the female connector  10  and the male connector  50  are coupled. Likewise, the connection terminal  14   b  and the connection terminal  54   b  make contact at the contact portions  32   b  and  72   b  when the female connector  10  and the male connector  50  are coupled. Furthermore, the connection terminal  14   c  and the connection terminal  54   c  make contact at the contact portions  32   c  and  72   c  when the female connector  10  and the male connector  50  are coupled. 
     Meanwhile, the anchoring terminal  12  and the anchoring terminal  52  have substantially rectangular ring shapes that enclose the contact portions  32   a - 32   c  and  72   a - 72   c  when the female connector  10  and the male connector  50  are coupled, when viewed from above. More specifically, when viewed from above, the main body portion  21  of the anchoring terminal  12  has a shape in which part of the longer side on the front of the substantially rectangular ring is cut out. On the other hand, when viewed from above, the main body portion  61  of the anchoring terminal  52  has a shape in which part of the longer side on the rear of the substantially rectangular ring is cut out. In other words, the cut-out portion of the anchoring terminal  12  and the cut-out portion of the anchoring terminal  52  are provided in different positions so as not to overlap when viewed from above. Accordingly, when the anchoring terminal  52  is inserted into the anchoring terminal  12 , the anchoring terminal  12  and the anchoring terminal  52  configure a substantially rectangular ring. Meanwhile, the contact portions  32   a - 32   c  are arranged in that order, in a single row, from the left to the right within the substantially rectangular ring, when viewed from above. The contact portions  72   a - 72   c  are arranged in that order, in a single row, from the left to the right within the substantially rectangular ring, when viewed from above. 
     Attachment of Male Connector to Female Connector 
     Next, the attachment of the male connector  50  to the female connector  10  will be described with reference to the drawings.  FIG. 19A  is a diagram illustrating a view of the connector set  100  from the front.  FIG. 19B  is a cross-sectional structural diagram illustrating the connector set  100  along a line  3 - 3  in  FIG. 19A .  FIG. 19C  is a cross-sectional structural diagram illustrating the connector set  100  along a line  4 - 4  in  FIG. 19A .  FIG. 20A  is a diagram illustrating a view of the connector set  100  from the front.  FIG. 20B  is a cross-sectional structural diagram illustrating the connector set  100  along a line  5 - 5  in  FIG. 20A .  FIG. 20C  is a cross-sectional structural diagram illustrating the connector set  100  along a line  6 - 6  in  FIG. 20A .  FIG. 21A  is a diagram illustrating a view of the connector set  100  from the front.  FIG. 21B  is a cross-sectional structural diagram illustrating the connector set  100  along a line  7 - 7  in  FIG. 21A .  FIG. 21C  is a cross-sectional structural diagram illustrating the connector set  100  along a line  8 - 8  in  FIG. 21A . 
     It is preferable for the male connector  50  to be lowered from directly above the female connector  10  and inserted into the female connector  10 . However, there are also cases where the male connector  50  is lowered from a position that is skewed from the position corresponding to directly above the female connector  10 . With the connector set  100  according to the present embodiment, the male connector  50  can be inserted into the female connector  10  even in the case where the male connector  50  is lowered from a position that is skewed from the position corresponding to directly above the female connector  10 . A case in which the male connector  50  is lowered from a position skewed to the rear relative to the female connector  10  will be given as an example hereinafter, as illustrated in  FIGS. 19A-19C . 
     When the male connector  50  is lowered from the state illustrated in  FIGS. 19A-19C , the surfaces S 11  and S 13  of the upper portions  22   a  and  22   b  (see  FIG. 3B ) make contact with the surfaces S 1  and S 3  of the lower portions  62   a  and  62   b  (see  FIG. 12B ), respectively, as shown in  FIGS. 20A-20C . The surfaces S 11  and S 13  have convex curved surfaces facing the upper-rear. The surfaces S 1  and S 3  have convex curved surfaces facing the lower-front. Accordingly, when the male connector  50  is lowered further, the male connector  50  slides along the surfaces S 11  and S 13  and moves toward the lower-front. As a result, the male connector  50  is positioned directly above the female connector  10 , as illustrated in  FIGS. 21A-21C . The male connector  50  is then inserted into the female connector  10  by lowering the male connector  50  further, as illustrated in  FIGS. 18C-18E . 
     Note that the male connector  50  can be inserted into the female connector  10  for the same reasons as described above even in the case where the male connector  50  is lowered from a position skewed toward the front relative to the female connector  10 , the case where the male connector  50  is lowered from a position skewed toward the right relative to the female connector  10 , and the case where the male connector  50  is lowered from a position skewed toward the left relative to the female connector  10 . 
     Effects 
     The connector set  100  according to the present embodiment can improve noise-resistance properties. More specifically, the anchoring terminal  12  and the anchoring terminal  52  have substantially rectangular ring shapes that enclose the contact portions  32   a - 32   c  and  72   a - 72   c  when the female connector  10  and the male connector  50  are coupled, when viewed from above. Meanwhile, the anchoring terminals  12  and  52  are connected to a ground potential. As such, the connection terminals  14   a - 14   c  and  54   a - 54   c  are shielded in the front-rear and left-right directions. Accordingly, noise is suppressed from entering the connection terminals  14   a - 14   c  and  54   a - 54   c  in the front-rear and left-right directions. As such, the connector set  100  can improve noise-resistance properties. 
     Meanwhile, in the connector set  100 , the connection terminals  14   a - 14   c  and  54   a - 54   c  are shielded in the front-rear and left-right directions. As such, according to the connector set  100 , noise can be suppressed from radiating from the connection terminals  14   a - 14   c  and  54   a - 54   c  from the front-rear and left-right directions. 
     In addition, the noise-resistance properties can be improved by the male connector  50  as well, due to the following reasons. Specifically, when viewed from above, the lower portion  20  of the anchoring terminal  12  has portions that follow the four sides of the substantially rectangular ring that encloses the contact portions  32   a - 32   c , and has a shape in which part of the substantially rectangular ring has been cut out. Accordingly, with the male connector  50 , the anchoring terminal  52  that is connected to a ground potential is present in the front-rear and left-right directions of the contact portions  32   a - 32   c . As a result, the connection terminals  54   a - 54   c  are shielded in the front-rear and left-right directions. Accordingly, noise from the front-rear and left-right directions is suppressed from entering the connection terminals  54   a - 54   c . As such, the male connector can improve noise-resistance properties. Note that the female connector  10  can also improve noise-resistance properties for the same reasons. 
     Meanwhile, in the male connector  50 , the connection terminals  54   a - 54   c  are shielded in the front-rear and left-right directions. As such, according to the male connector  50 , noise can be suppressed from radiating from the connection terminals  54   a - 54   c  in the front-rear and left-right directions. Note that in the female connector  10  as well, the connection terminals  14   a - 14   c  can be suppressed from radiating noise in the front-rear and left-right directions for the same reason. 
     Meanwhile, according to the female connector  10 , the male connector  50 , and the connector set  100 , the connection terminals  14   a - 14   c  and  54   a - 54   c  can be suppressed from being damaged when the female connector  10  and the male connector  50  are coupled. Specifically, the anchoring terminal  12  of the female connector  10  has the upper portions  22   a  and  22   d . The upper portion  22   a  is connected to the top of the rear-left corner of the lower portion  20 , and configures an upper end portion of the main body portion  21 . Furthermore, an inner peripheral surface of the upper portion  22   a  includes the surface S 11  that faces the upper-front, and the surface S 12  that faces the upper-right. The upper portion  22   d  is connected to the top of the front-right corner of the lower portion  20 , and configures an upper end portion of the main body portion  21 . Furthermore, an inner peripheral surface of the upper portion  22   d  includes the surface S 17  that faces the upper-rear, and the surface S 18  that faces the upper-left. 
     On the other hand, the anchoring terminal  52  of the male connector  50  has the lower portions  62   a  and  62   d . The lower portion  62   a  is connected to the bottom of the rear-left corner of the upper portion  60 , and configures a lower end portion of the main body portion  61 . Furthermore, the outer peripheral surface of the lower portion  62   a  includes the surface S 1  that faces the lower-rear and the surface S 2  that faces the lower-left. The lower portion  62   d  is connected to the bottom of the front-right corner of the upper portion  60 , and configures a lower end portion of the main body portion  61 . Furthermore, the outer peripheral surface of the lower portion  62   d  includes the surface S 7  that faces the lower-front and the surface S 8  that faces the lower-right. 
     When the male connector  50  as described thus far is inserted into the female connector  10  from above, the surface S 1  and the surface S 11  make contact, the surface S 2  and the surface S 12  make contact, the surface S 7  and the surface S 17  make contact, and the surface S 8  and the surface S 18  make contact. Accordingly, the female connector  10  and the male connector  50  are positioned in the front-rear direction by the surfaces S 1 , S 2 , S 11 , and S 12 . Likewise, the female connector  10  and the male connector  50  are positioned in the left-right direction by the surfaces S 7 , S 8 , S 17 , and S 18 . In other words, the anchoring terminals  12  and  52  contribute greatly to the positioning of the female connector  10  and the male connector  50  in the front-rear and left-right directions, whereas the connection terminals  14   a - 14   c  and  54   a - 54   c  do not contribute greatly to this positioning. As such, according to the female connector  10 , the male connector  50 , and the connector set  100 , the connection terminals  14   a - 14   c  and  54   a - 54   c  can be suppressed from being damaged when the female connector  10  and the male connector  50  are coupled. 
     Note that the anchoring terminal  52  has the lower portions  62   b  and  62   c  and the anchoring terminal  12  has the upper portions  22   b  and  22   c . Accordingly, the upper portions  22   b  and  22   c  and the lower portions  62   b  and  62   c  also position the female connector  10  and the male connector  50  in the front-rear and left-right directions. As such, according to the female connector  10 , the male connector  50 , and the connector set  100 , the connection terminals  14   a - 14   c  and  54   a - 54   c  can be suppressed from being damaged when the female connector  10  and the male connector  50  are coupled. 
     In addition, according to the male connector  50  and the connector set  100 , the male connector  50  can be manufactured with ease. Specifically, the insulative member is formed by injecting a resin into a plastic injection mold. Accordingly, when manufacturing the insulative member  56 , it is necessary to enclose the periphery of the space in which the insulative member  56  is manufactured with the plastic injection mold. However, the insulative member  56  is formed integrally with the anchoring terminal  52 . As such, the anchoring terminal  52  acts as an obstacle and makes it difficult to position the plastic injection mold. 
     Accordingly, as illustrated in  FIGS. 11A and 11B , the insulative member  56  is enclosed within the main body portion  61  when viewed from above. In addition, the insulative member holds the anchoring terminal  52  only via the projection portions  64   a  and  64   b . As a result, a gap is provided between the main body portion  61  and the insulative member  56  when viewed from above. Accordingly, with the male connector  50 , the plastic injection mold can be disposed in the gap. As a result, the male connector  50  can be manufactured with ease. Meanwhile, in the case where the insulative member  56  is formed integrally with the anchoring terminal  52 , the insulative member  56  and the anchoring terminal  52  can be positioned more precisely than in the case where the anchoring terminal  52  is attached to the insulative member  56  by clamping. Note that the female connector  10  can be manufactured with ease for the same reasons. 
     In addition, according to the male connector  50  and the connector set  100 , it is easy to set the characteristic impedance of the connection terminals  54   a - 54   c  to a predetermined characteristic impedance (50Ω, for example). More specifically, as illustrated in  FIGS. 11A and 11B , the insulative member  56  is enclosed within the main body portion  61  when viewed from above. In addition, the insulative member holds the anchoring terminal  52  only via the projection portions  64   a  and  64   b . Through this, a gap is provided between the main body portion  61  and the insulative member  56  when viewed from above. As a result, a gap is present between the connection terminals  54   a - 54   c  and the anchoring terminal  52 , which is filled with air having a low permittivity. Accordingly, a capacity formed between the anchoring terminal  52  and the connection terminals  54   a - 54   c  is suppressed from increasing, and characteristic impedance of the connection terminals  54   a - 54   c  is suppressed from dropping. As such, according to the male connector  50  and the connector set  100 , it is easy to set the characteristic impedance of the connection terminals  54   a - 54   c  to a predetermined characteristic impedance (50Ω, for example). For the same reasons, it is easy to set the characteristic impedance of the connection terminals  14   a - 14   c  to a predetermined characteristic impedance (50Ω, for example) in the female connector  10  as well. 
     In addition, according to the male connector  50  and the connector set  100 , the anchoring terminal  52  and the connection terminals  54   a - 54   c  can be given a coplanar structure. Specifically, the anchoring terminal  52  and the connection terminal  54   b  are connected to a ground potential. On the other hand, the connection terminals  54   a  and  54   c  are connected to a signal potential. Through this, the anchoring terminal  52  is located to the left of the connection terminal  54   a  and the connection terminal  54   b  is located to the right of the connection terminal  54   a , when viewed from above. As such, the anchoring terminal  52  and the connection terminals  54   a  and  54   b  have a coplanar structure. Likewise, the anchoring terminal  52  is located to the right of the connection terminal  54   c  and the connection terminal  54   b  is located to the left of the connection terminal  54   c , when viewed from above. As such, the anchoring terminal  52  and the connection terminals  54   b  and  54   c  have a coplanar structure. By giving the anchoring terminal  52  and the connection terminals  54   a - 54   c  a coplanar structure, it is easy to set the characteristic impedance of the connection terminals  54   a  and  54   c  to a predetermined characteristic impedance. In addition, noise is suppressed from entering the connection terminals  54   a  and  54   c  from the left-right direction and noise is suppressed from radiating from the connection terminals  54   a  and  54   c  in the left-right direction. Note that for the same reasons, it is easy to set the characteristic impedance of the connection terminals  14   a  and  14   c  to a predetermined characteristic impedance in the female connector  10  as well. In addition, noise is suppressed from entering the connection terminals  14   a  and  14   c  from the left-right direction and noise is suppressed from radiating from the connection terminals  14   a  and  14   c  in the left-right direction. 
     In addition, according to the male connector  50  and the connector set  100 , it is easy to bring the characteristic impedance of the connection terminals  54   a  and  54   c  close to uniform across the entirety thereof. Specifically, as illustrated in  FIG. 11B , the minimum distance D 11  between the upper portion  60  and the connection terminal  54   a  and the minimum distance D 12  between the projection portion  64   a  and the connection terminal  54   a  are substantially equal, when viewed from above. Furthermore, the distance D 13  between the connection terminal  54   a  and the connection terminal  54   b  is substantially equal to the minimum distances D 11  and D 12 . Accordingly, the stray capacitance per unit of length produced on the connection terminal  54   a  can be brought close to uniform across the entirety thereof. As such, the characteristic impedance of the connection terminal  54   a  can be brought close to uniform across the entirety thereof. For the same reasons, the characteristic impedance of the connection terminal  54   c  can be brought close to uniform across the entirety thereof. Furthermore, for the same reasons, the characteristic impedance of the connection terminals  14   a  and  14   c  can be brought close to uniform across the entireties thereof. 
     In addition, in the male connector  50 , the connection terminals  54   a - 54   c  are drawn out to the exterior of the ring, when viewed from above. As a result, it is easy to bring a terminal into contact with the connection terminals  54   a - 54   c  and carry out inspections. Furthermore, the connection terminals  54   a - 54   c  can easily be soldered to the land electrodes on the circuit board. For the same reasons, it is easy to bring a terminal into contact with the connection terminals  14   a - 14   c  and carry out inspections with the female connector  10  as well. Furthermore, the connection terminals  14   a - 14   c  can easily be soldered to the land electrodes on the circuit board. 
     In addition, according to the connector set  100 , signal interference is suppressed. Specifically, in the board-to-board connector disclosed in Japanese Unexamined Patent Application Publication No. 2012-79684, the first terminal and the second terminal take on a substantially U shape when connected to each other, and thus overlap in the up-down direction. Accordingly, there is a risk that signal interference will occur due to a capacitance component or an induction component produced between the first terminal and the second terminal that have approached each other. 
     On the other hand, according to the connector set  100 , the connection terminals  14   a - 14   c  extend toward the front from the contact portions  32   a - 32   c  when viewed from above. In addition, the connection terminals  54   a - 54   c  extend toward the rear from the contact portions  72   a - 72   c , respectively, when viewed from above. The contact portions  32   a - 32   c  are connected to the connection terminals  54   a - 54   c , respectively. As a result, the connection terminal  14   a  and the connection terminal  54   a  extend in a straight line in the front-rear direction, the connection terminal  14   b  and the connection terminal  54   b  extend in a straight line in the front-rear direction, and the connection terminal  14   c  and the connection terminal  54   c  extend in a straight line in the front-rear direction. Accordingly, the connection terminals  14   a - 14   c  are suppressed from overlapping with the connection terminals  54   a - 54   c , respectively, in the up-down direction. As a result, according to the connector set  100 , signal interference is suppressed. 
     In addition, according to the connector set  100 , it is easy to improve the noise-resistance properties. Specifically, in the board-to-board connector disclosed in Japanese Unexamined Patent Application Publication No. 2012-79684, the first terminal and the second terminal take on a substantially U shape when connected to each other. In other words, the first terminal and the second terminal are disposed in two steps in the up-down direction. Accordingly, it is difficult to secure a space for disposing a conductor for shielding in the vicinity of one of the longer sides of the first housing. As a result, it is difficult to enclose the periphery of the first terminal and the second terminal with a conductor for shielding. 
     On the other hand, according to the connector set  100 , the connection terminal  14   a  and the connection terminal  54   a  extend in a straight line in the front-rear direction, the connection terminal  14   b  and the connection terminal  54   b  extend in a straight line in the front-rear direction, and the connection terminal  14   c  and the connection terminal  54   c  extend in a straight line in the front-rear direction. As such, the connection terminals  14   a - 14   c  and the connection terminals  54   a - 54   c  are not disposed in two steps in the up-down direction. Accordingly, the anchoring terminal  52  can be disposed above the connection terminals  14   a - 14   c  and the anchoring terminal  12  can be disposed below the connection terminals  54   a - 54   c . In other words, the contact portions  32   a - 32   c  and  72   a - 72   c  can be enclosed with the anchoring terminals  12  and  52 , when viewed from above. As a result, according to the connector set  100 , it is easy to improve the noise-resistance properties. In addition, according to the connector set  100 , noise can be suppressed from radiating to the exterior. 
     In addition, according to the connector set  100 , the connection terminals  14   a - 14   c  and the connection terminals  54   a - 54   c  are arranged in a single row, and thus the size of the connector set  100  can be reduced. Furthermore, because the connection terminals  14   a - 14   c  and the connection terminals  54   a - 54   c  are arranged in a single row, the influence of pitch skew is reduced, which suppresses changes in coupling force, fluctuations in engagement force, and so on between the female connector  10  and the male connector  50 . 
     In addition, according to the connector set  100 , the anchoring terminals  12  and  52  contribute greatly to the coupling of the female connector  10  and the male connector  50 , whereas the connection terminals  14   a - 14   c  and  54   a - 54   c  contribute almost nothing at all. Accordingly, the strength of the coupling between the female connector  10  and the male connector  50  does not fluctuate greatly even if the number of the connection terminals  14   a - 14   c  and  54   a - 54   c  is changed. 
     In addition, according to the connector set  100 , the insulative members  16  and  56  are suppressed from being subjected to wear when the female connector  10  and the male connector  50  are coupled. Specifically, in the case where the male connector  50  is lowered from a position skewed in the front-rear and left-right directions relative to the female connector  10 , the female connector  10  and the male connector  50  are positioned in the front-rear and left-right directions due to the anchoring terminal  12  and the anchoring terminal  52  making contact with each other. During the positioning, the insulative member  16  does not make contact with the anchoring terminal  52 , and the insulative member  56  does not make contact with the anchoring terminal  12 . Furthermore, the insulative member  16  and the insulative member  56  do not make contact during the positioning. As a result, the insulative members  16  and  56  are suppressed from being subjected to wear. 
     Other Embodiments 
     The connectors and connector set according to the present disclosure are not limited to the female connector  10 , the male connector  50 , and the connector set  100 , and can be changed without departing from the essential scope of the present disclosure. Although the female connector  10  is set as the first connector and the male connector  50  is set as the second connector, the male connector  50  can be set as the first connector and the female connector  10  can be set as the second connector. 
     The female connector  10  and the male connector  50  can be positioned in the front-rear and left-right directions as long as the anchoring terminal  12  has the upper portions  22   a  and  22   d  and the anchoring terminal  52  has the lower portions  62   a  and  62   d . In other words, the upper portions  22   b  and  22   c  are not absolutely necessary in the anchoring terminal  12 , and the lower portions  62   b  and  62   c  are not absolutely necessary in the anchoring terminal  52 . Likewise, the anchoring terminal  12  may have the upper portions  22   b  and  22   c  and the anchoring terminal  52  may have the lower portions  62   b  and  62   c  instead. In this case, the upper portions  22   a  and  22   d  are not absolutely necessary in the anchoring terminal  12 , and the lower portions  62   a  and  62   d  are not absolutely necessary in the anchoring terminal  52 . 
     In addition, although the anchoring terminal  12  and the anchoring terminal  52  have a substantially rectangular ring shape when viewed from above, these terminals may have a ring shape aside from substantially rectangular, such as a substantially oval or substantially elliptical shape. 
     In addition, although a space is provided between the anchoring terminal  12  and the insulative member  16 , the space may be filled with a material having a lower relative permittivity than the insulative member  16 . Through this, the strength of the female connector  10  can be increased. Likewise, the space between the anchoring terminal  52  and the insulative member  56  may be filled with a material having a lower relative permittivity than the insulative member  56 . 
     In addition, it is sufficient for two or more of the connection terminals  14   a - 14   c  to be provided. Likewise, it is sufficient for two or more of the connection terminals  54   a - 54   c  to be provided. 
     In addition, the connection terminals  14   a - 14   c  and  54   a - 54   c  may be configured only of signal terminals to which a signal potential is applied. 
     As described thus far, the present disclosure is useful in connector sets and connectors, and is particularly advantageous in that connection terminals can be suppressed from being damaged when the first connector and the second connector are coupled. 
     While preferred embodiments of the disclosure have been described above, it is to be understood that variations and modifications will be apparent to those skilled in the art without departing from the scope and spirit of the disclosure. The scope of the disclosure, therefore, is to be determined solely by the following claims.