JP2012221602A - Board-to-board connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve reliability by precisely detecting complete fitting of a first connector and a second connector and reliably preventing incomplete fitting in a fitting step, even in a fitting step of a board-to-board connector of a small size and a low height.SOLUTION: A board-to-board connector comprises a first connector including a first terminal and a first housing having first fitting guide parts formed on both longitudinal ends; and a second connector including a second terminal contacting the first terminal and a second housing having second fitting guide parts formed on both longitudinal ends and fitted with the first fitting guide parts. The board-to-board connector has a switch for closing a detection circuit electrically detecting complete fitting of the first connector and the second connector. The switch includes switching members that can contact with each other. A contact part of one switching member is an inclined part, and an extension direction of the inclined part is inclined to an extension direction of a linear part that is a contact part of the other switching member.

Description

  The present invention relates to a board-to-board connector.

  Conventionally, a board-to-board connector has been used to electrically connect a pair of parallel circuit boards. Such a board-to-board connector is attached to each of mutually facing surfaces of a pair of circuit boards, and is adapted to be fitted (contained) with each other to be conducted. In addition, a technique has been proposed in which reinforcing metal fittings attached to both ends are made to function as a lock member to maintain a fitting state with a counterpart connector (see, for example, Patent Document 1).

  FIG. 14 is a perspective view showing a state before the conventional board-to-board connector is fitted.

  In the figure, reference numeral 801 denotes a first connector as one of a pair of board-to-board connectors, which is mounted on the surface of the first board 891. Reference numeral 901 denotes a second connector as the other of the pair of board-to-board connectors, and is mounted on the surface of the second board 991. The first connector 801 includes a first housing 811 and a plurality of first terminals 861 attached to the first housing 811. The second connector 901 includes a second housing 911 and the first housing 911. 2 having a plurality of second terminals 961 mounted on the housing 911. When the first connector 801 and the second connector 901 are fitted, the corresponding first terminal 861 and second terminal 961 come into contact with each other, so that the first board 891 and the second board 991 are electrically connected. Connected to.

  Further, the first housing 811 is formed with a recess 812 for accommodating the second housing 911, and an engagement protrusion 813 is formed in the recess 812. On the other hand, the second housing 911 is formed with an engagement recess 913 that accommodates the engagement protrusion 813.

  Further, first metal fittings 851 are attached to both longitudinal ends of the first housing 811. The first metal fitting 851 includes a first tail portion 852 that is soldered to the surface of the first substrate 891, and a first lock protrusion 853 that protrudes. In addition, second metal fittings 951 are attached to both ends of the second housing 911 in the longitudinal direction. The second metal fitting 951 includes a second tail portion 952 that is soldered to the surface of the second substrate 991, and also includes a protruding second lock protrusion 953.

  When the first connector 801 and the second connector 901 are fitted, the engaging convex portion 813 and the engaging concave portion 913 engage with each other, and the first lock protrusion 853 of the first metal fitting 851 and the second metal fitting 951 are engaged. The second locking projections 953 engage with each other. Thereby, the 1st connector 801 and the 2nd connector 901 are locked, and the fitting state is maintained.

  At the time of fitting, either the first connector 801 or the second connector 901 is turned upside down from the posture shown in the figure and is fitted with the mating connector.

JP 2004-55306 A

  However, in the conventional board-to-board connector, it is difficult to confirm whether or not the first connector 801 and the second connector 901 are completely fitted. That is, when the first connector 801 and the second connector 901 are fitted, either one is turned upside down, and the second housing 911 is accommodated in the recess 812 of the first housing 811, so that the recess It is visually recognized from the outside whether or not the first lock protrusion 853 of the first metal fitting 851 located inside the 812 is engaged with the second lock protrusion 953 of the second metal fitting 951 attached to the second housing 911. I can't.

  However, when the degree of protrusion of the second housing 911 from the upper end of the first housing 811 is large, it can be determined by visual inspection that the fitting between the first connector 801 and the second connector 901 is incomplete. . However, since the first substrate 891 and the second substrate 991 having a larger area than the lower surfaces of the first housing 811 and the second housing 911 are attached to the lower surfaces of the first housing 811 and the second housing 911. It is difficult to visually confirm the degree of protrusion of the second housing 911 from the upper end of the first housing 811.

  In particular, in recent years, since the board-to-board connector has been reduced in size and height, the degree to which the second housing 911 protrudes from the upper end of the first housing 811 is accurately confirmed by visual inspection, and the first connector 801 It is extremely difficult to accurately determine whether or not the second connector 901 is completely fitted.

  The present invention solves the problems of the conventional board-to-board connector and electrically detects the complete fitting between the first connector and the second connector, thereby reducing the size and height of the board pair. Even in the board connector mating process, it is possible to accurately detect the complete mating of the first connector and the second connector, and to reliably prevent the occurrence of incomplete mating in the mating process. It is an object to provide a highly board-to-board connector.

  Therefore, in the board-to-board connector of the present invention, the first connector including the first terminal and the first housing having the first fitting guide portions formed at both ends in the longitudinal direction, and the first terminal are in contact with each other. A board-to-board connector comprising: a second terminal comprising: a second terminal having a second housing formed on both ends in the longitudinal direction and having a second fitting guide portion fitted to the first fitting guide portion. And a switch for closing a detection circuit for electrically detecting the complete engagement between the first connector and the second connector, the switch including a switching member capable of abutting against each other, and the contact of one switching member The portion is an inclined portion, and the extending direction of the inclined portion is inclined with respect to the extending direction of the linear portion that is the contact portion of the other switching member.

  In another board-to-board connector according to the present invention, the first connector further includes a first reinforcing metal member disposed in the first fitting guide portion, and the second connector has the second fitting. It has the 2nd reinforcement metal fitting arrange | positioned by the joint guide part, said one switching member is said 1st reinforcement metal fitting, and said other switching member is said 2nd reinforcement metal fitting.

  In still another board-to-board connector of the present invention, the first reinforcing bracket includes an elastic contact piece, the second reinforcing bracket includes a fixed contact piece, and the first connector and the second connector are fitted. When relatively moving in the mating direction, the inclined portion at the tip of the elastic contact piece is elastically displaced while maintaining contact with the straight portion at the tip of the fixed contact piece.

  In still another board-to-board connector according to the present invention, the inclined portion and the straight portion are slid relative to each other to perform wiping.

  In still another board-to-board connector of the present invention, the first reinforcing bracket and the second reinforcing bracket are electrically connected to a fixing pad on the substrate, and a detection pad is formed on the substrate. The detection pads serve as both ends of the detection circuit.

  According to the present invention, the board-to-board connector electrically detects a complete fit between the first connector and the second connector. Thereby, even in the board-to-board connector fitting process that is reduced in size and height, it is possible to accurately detect complete fitting between the first connector and the second connector, and incomplete fitting in the fitting process. It is possible to reliably prevent the occurrence of a failure and to increase the reliability.

It is the perspective view seen from the fitting surface side of the 1st connector in embodiment of this invention. It is the perspective view seen from the mounting surface side of the 1st connector in an embodiment of the invention. It is a perspective view which shows the 1st reinforcement metal fitting in embodiment of this invention. It is the perspective view which shows the state which the 1st connector and 2nd connector in embodiment of this invention mutually fitted, and is the figure seen from the fitting surface side of the 1st connector. It is the perspective view seen from the fitting surface side of the 2nd connector in embodiment of this invention. It is the perspective view seen from the mounting surface side of the 2nd connector in embodiment of this invention. It is a perspective view which shows the 2nd reinforcement metal fitting in embodiment of this invention. It is a perspective view which shows the relationship between the board-to-board connector and board | substrate in embodiment of this invention. It is sectional drawing which shows the relationship between the 1st terminal in the state which the fitting of the board | substrate to board connector in embodiment of this invention completed, and a 2nd terminal, and is AA arrow sectional drawing in FIG. It is sectional drawing which shows the relationship between the 1st reinforcement metal fitting in the state which the fitting of the board | substrate to board connector in embodiment of this invention was completed, and a 2nd reinforcement metal fitting, and is BB arrow sectional drawing in FIG. . It is a perspective view which shows the state which the 1st contact piece and the switch contact piece in embodiment of this invention are contacting. It is a perspective view which shows the change of the positional relationship of the inclination part of the 1st contact piece in embodiment of this invention, and the linear part of the switch contact piece, Comprising: (a) is a 1st contact piece, a switch contact piece, The figure which shows the state which started contact, (b) is a figure which shows the state which the 1st contact piece deform | transformed elastically. It is a top view which shows the change of the positional relationship of the inclination part of the 1st contact piece in embodiment of this invention, and the linear part of the contact piece for switches, (a) is a 1st contact piece, a switch contact piece, The figure which shows the state which started contact, (b) is a figure which shows the state which the 1st contact piece deform | transformed elastically. It is a perspective view which shows the state before the fitting of the conventional board | substrate to board connector.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  1 is a perspective view as seen from the fitting surface side of the first connector in the embodiment of the present invention, FIG. 2 is a perspective view as seen from the mounting surface side of the first connector in the embodiment of the present invention, and FIG. FIG. 4 is a perspective view showing a first reinforcing metal fitting in the embodiment of the present invention, and FIG. 4 is a perspective view showing a state in which the first connector and the second connector are fitted to each other in the embodiment of the present invention. It is the figure seen from the fitting surface side.

  In the figure, reference numeral 1 denotes a first connector as one of a pair of board-to-board connectors in the present embodiment, which is a surface mount type connector mounted on the surface of a first board 91 described later. Reference numeral 101 denotes a second connector as the other of the pair of board-to-board connectors in the present embodiment, which is a surface mount type connector mounted on the surface of a second board 191 described later. The board-to-board connector in the present embodiment includes the first connector 1 and the second connector 101, and electrically connects the first board 91 and the second board 191. The first substrate 91 and the second substrate 191 are, for example, a printed circuit board, a flexible flat cable (FFC), a flexible printed circuit (FPC), or the like used for an electronic device or the like. There may be any type of substrate.

  Further, in this embodiment, the expressions indicating directions such as upper, lower, left, right, front, rear, etc. used for explaining the configuration and operation of each part of the board-to-board connector are absolute. Relative and appropriate, when each part of the board-to-board connector is in the posture shown in the figure, but when that posture changes, it is interpreted according to the change in posture It should be.

  And the said 1st connector 1 has the 1st housing 11 as a connector main body integrally formed with insulating materials, such as a synthetic resin. As shown in the figure, the first housing 11 has a substantially rectangular thick plate shape that is a substantially rectangular parallelepiped, and is the side on which the second connector 101 is inserted, that is, the fitting surface side (the upper side in FIG. 1). ) Is formed with a substantially rectangular recess 12 surrounded by the periphery. The first connector 1 has, for example, dimensions of about 10.0 [mm] in length, about 2.5 [mm] in width, and about 1.0 [mm] in thickness, but the dimensions are appropriately changed. be able to. A first convex portion 13 as an island portion is formed integrally with the first housing 11 in the concave portion 12, and parallel to the first convex portion 13 on both sides of the first convex portion 13. An extending side wall 14 is formed integrally with the first housing 11. In this case, the first convex portion 13 and the side wall portion 14 protrude upward from the bottom surface of the concave portion 12 and extend in the longitudinal direction of the first housing 11. As a result, both sides of the first convex portion 13, specifically, between the first convex portion 13 and the side wall portion 14, as a part of the concave portion 12 and extending in the longitudinal direction of the first housing 11. A concave groove portion 12a which is a concave portion is formed. In the example shown in the figure, the first convex portion 13 is singular, but may be plural, and the number may be any number. Moreover, although the said 1st convex part 13 is provided with the dimension of width about 0.6 [mm], for example, a dimension can be changed suitably.

  Here, on both side surfaces of the first convex portion 13, concave terminal-shaped first terminal accommodating inner cavities 15 a are formed. Further, a groove-shaped first terminal accommodating outer cavity 15 b is formed on the inner side surface of the side wall portion 14. The first terminal housing inner cavity 15a and the first terminal housing outer cavity 15b are connected to each other at the bottom surface of the groove 12a and are integrated with each other. Therefore, the first terminal housing inner cavity 15a and the first terminal housing outer cavity 15b are integrated. In a case where 15b is described in an integrated manner, the first terminal accommodating cavity 15 will be described.

  For example, six first terminal accommodating cavities 15 are formed on both sides of the first convex portion 13 with a pitch of about 0.4 mm, for example. In addition, six first terminals 61 accommodated in each of the first terminal accommodating cavities 15 are also arranged on each side of the first convex portion 13 with a pitch of about 0.4 [mm], for example. The pitch and number of the first terminal accommodating cavities 15 can be changed as appropriate.

  The first terminal 61 is a member integrally formed by punching and bending a conductive metal plate, and is connected to the held portion 63 and the lower end of the held portion 63. A tail portion 62, an upper connection portion 67 connected to the upper end of the held portion 63, a second contact portion 66 as a second contact convex portion formed in the vicinity of the inner end of the upper connection portion 67, A lower connection portion 64 connected to the second contact portion 66 and a first contact portion 65 as a first contact convex portion formed in the vicinity of the free end of the lower connection portion 64 are provided.

  The held portion 63 is a portion that extends in the vertical direction, that is, the thickness direction of the first housing 11 and is fitted and held in the first terminal housing outer cavity 15b. The tail portion 62 is bent and connected to the held portion 63, extends outward in the left-right direction, that is, the width direction of the first housing 11, and is connected to the conductive trace on the first substrate 91. Connected to the connected terminal connection pads by soldering or the like. Further, the upper connection portion 67 is bent and connected to the held portion 63 and extends inward in the width direction of the first housing 11.

  A curved second contact portion 66 that is bent downward and protrudes inward in the width direction of the first housing 11 is formed at the inner end of the upper connection portion 67. Further, the lower connection portion 64 is a portion having a U-shaped side surface shape connected to the lower end of the second contact portion 66. A curved first contact that is bent in a U-shape and protrudes outward in the width direction of the first housing 11 at the free end of the lower connection portion 64, that is, in the vicinity of the upper end of the inner side. A portion 65 is formed.

  The first terminal 61 is inserted into the first terminal accommodating cavity 15 from the mounting surface side (upper side in FIG. 2), and the held portion 63 is formed on the inner side surface of the side wall portion 14. It is fixed to the first housing 11 by being sandwiched from both sides by the side wall of the cavity 15b. In this state, that is, in a state where the first terminal 61 is loaded in the first housing 11, the first contact portion 65 and the second contact portion 66 are located on both the left and right sides of the concave groove portion 12a and are mutually connected. Facing each other.

  In addition, since the 1st terminal 61 is a member integrally formed by processing a metal plate, it has a certain amount of elasticity. As apparent from the shape, the distance between the first contact portion 65 and the second contact portion 66 facing each other can be changed elastically. That is, when the second terminal 161 of the second connector 101 is inserted between the first contact portion 65 and the second contact portion 66, the distance between the first contact portion 65 and the second contact portion 66 is thereby increased. Elastically stretches.

  Further, first projecting end portions 21 as first fitting guide portions are respectively disposed at both longitudinal ends of the first housing 11. Each first projecting end portion 21 is formed with a projecting end recess 22 as a part of the recess 12. The projecting end recess 22 is a substantially rectangular recess and is connected to both ends in the longitudinal direction of each recess 12a. The projecting end recess 22 functions as an insertion recess into which a later-described second projecting end 122 provided in the second connector 101 is inserted in a state where the first connector 1 and the second connector 101 are fitted. To do.

  Further, the first projecting end portion 21 extends from both longitudinal ends of the side wall portion 14 in the longitudinal direction of the first housing 11, and extends in the short direction of the first housing 11. Includes an end wall portion 21c connected to the side wall extension portion 21b. In each first projecting end portion 21, the end wall portion 21 c and the side wall extension 21 b connected to both ends thereof form a continuous U-shaped side wall, and define three sides of the substantially rectangular projecting end recess 22. .

  A first reinforcing metal fitting 51 as a reinforcing metal fitting is attached to the first protruding end portion 21. Specifically, two first reinforcing metal fittings 51 are disposed in each protruding end recess 22, and are housed and held in a first metal fitting holding recess 26 formed in the protruding end recess 22. The first reinforcing bracket 51 includes a first switch bracket 51b and a first non-switch that function as a switching member of a switch for electrically detecting complete fitting of the first connector 1 and the second connector 101. Metal fitting 51a. The side wall extension 21b is formed with a first non-switch fitting holding slit 26a extending in the thickness direction of the first housing 11, and the end wall 21c is formed with the thickness of the first housing 11. A first switch metal fitting holding slit 26b extending in the vertical direction is formed. The first metal fitting holding recess 26 is left and right (in the width direction of the first housing 11) by a first metal fitting position restricting portion 27 as a stopper formed in the center of the protruding housing 22 in the width direction of the first housing 11. It is divided into two.

  In the present embodiment, the first reinforcing metal fitting 51 is a substantially L-shaped member integrally formed by punching and bending a conductive metal plate, and the first housing 11. A first substrate as a main body portion that is bent and connected to both left and right ends of the held portion 57 and extends in a direction along the mounting surface of the first housing 11. It has a connection part 56 and a first contact piece 58 as an elastic contact piece connected to the first substrate connection part 56 and extending in a direction along the mounting surface of the first housing 11. In addition, when identifying and explaining each part of the 1st reinforcement metal fitting 51 to the 1st non-switch metal fitting 51a and the 1st switch metal fitting 51b, a and b are added and identified at the end of the numerals of each part. To do.

  In the first reinforcing metal fitting 51, held portions 57a and 57b are fitted into the first non-switch metal fitting holding slit portion 26a and the first switch metal fitting holding slit portion 26b from the mounting surface side, and It is fixed to the first housing 11 by being sandwiched from both sides by the side walls of the switch metal fitting holding slit portion 26a and the first switch metal fitting holding slit portion 26b.

  The first substrate connecting portions 56a and 56b function as solder tail portions of the first reinforcing bracket 51, and are formed so that the lower surface thereof is substantially parallel to the mounting surface (the upper surface in FIG. 2) of the first housing 11. Then, it is fixed to a first fixing pad 93 described later on the first substrate 91 by soldering or the like.

  The first contact piece 58 is accommodated in the first metal fitting holding recess 26 so as to be substantially parallel to the mounting surface. In addition, a step is formed at a connection portion between the first substrate connection portions 56a and 56b and the first contact pieces 58a and 58b, and the first contact pieces 58a and 58b are not parallel to the first substrate connection portions 56a and 56b. However, it is located closer to the fitting surface than the first substrate connecting portions 56a and 56b, and the distance from the lower surface to the first substrate 91 is from the lower surface of the first substrate connecting portions 56a and 56b to the first substrate 91. It is set to be larger than the distance.

  FIG. 3 shows the postures of the first non-switch fitting 51a and the first switch fitting 51b fixed to the first housing 11, respectively. FIG. 3 can also be said to be obtained by deleting the first housing 11 and the first terminal 61 from FIG.

  The first non-switch metal fitting 51 a has a posture such that the first contact piece 58 a extends toward the center in the width direction of the first housing 11. Then, the displacement of the tip of the first contact piece 58 a, that is, the upward direction of the free end, that is, the fitting surface direction is limited by the first metal fitting position restricting portion 27.

  On the other hand, the first switch fitting 51b has a posture in which the first contact piece 58b extends toward the longitudinal center of the first housing. That is, the extending direction of the first contact piece 58b of the first switch fitting 51b is orthogonal to the extending direction of the first contact piece 58a of the first non-switch fitting 51a. In addition, an inclined portion 59 that is inclined without being orthogonal to the extending direction is formed at the tip of the first contact piece 58b. That is, the tip of the first contact piece 58b is cut so as to incline without being orthogonal to the extending direction. The inclined portion 59 functions as a contact portion of the first switch metal fitting 51b that functions as a switching member, and comes into contact with a second reinforcement metal fitting 151 described later of the second connector 101.

  Next, the configuration of the second connector 101 will be described.

  FIG. 5 is a perspective view as seen from the fitting surface side of the second connector in the embodiment of the present invention, FIG. 6 is a perspective view as seen from the mounting surface side of the second connector in the embodiment of the present invention, and FIG. It is a perspective view which shows the 2nd reinforcement metal fitting in embodiment of this invention.

  The second connector 101 has a second housing 111 as a connector body integrally formed of an insulating material such as synthetic resin. As shown in the drawing, the second housing 111 has a substantially rectangular thick plate shape that is a substantially rectangular parallelepiped, and has a length of about 8.0 [mm], a width of about 1.5 [mm], and a thickness, for example. Although it has a dimension of about 0.8 [mm], the dimension can be appropriately changed. Then, on the side of the second housing 111 to be fitted into the first connector 1, that is, on the fitting surface side (upper side in FIG. 5), an elongated groove 113 extending in the longitudinal direction of the second housing 111, A second convex portion 112 is integrally formed as an elongated convex portion that defines the outside of the concave groove portion 113 and extends in the longitudinal direction of the second housing 111. The second convex portion 112 is formed along both sides of the concave groove portion 113 and along both sides of the second housing 111. In addition, each second protrusion 112 is provided with a second terminal 161 as a terminal.

  As shown in the figure, the groove 113 is closed on the side mounted on the second substrate 191, that is, on the mounting surface (upper surface in FIG. 6) by the bottom. In the example shown in the figure, the number of the second convex portions 112 is two, but the number may be singular or any number. Moreover, although the said groove part 113 is provided with the dimension of width about 0.7 [mm], for example, a dimension can be changed suitably.

  The second terminal 161 is a member integrally formed by punching or bending a conductive metal plate, and a main body (not shown) and a tail portion connected to the lower end of the main body 162, a first contact part 165 connected to the upper end of the main body part, a connection part 164 connected to the upper end of the first contact part 165, and a second connected to the outer end of the connection part 164. A contact portion 166. A second contact recess 166 a that engages with the second contact portion 66 of the first terminal 61 is formed on the surface of the second contact portion 166.

  The main body is a portion that is surrounded and held by the second housing 111, and is a portion that is not shown in FIGS. The tail portion 162 is connected to the lower end of the main body portion extending in the left-right direction, that is, the width direction of the second housing 111, and extends toward the outside of the second housing 111. Are connected to terminal connection pads connected to the conductive traces by soldering or the like.

  Furthermore, the first contact portion 165 is a flat plate-like portion that is connected to the main body portion and extends in the vertical direction, that is, in the thickness direction of the second housing 111. The connection portion 164 is bent and connected to the first contact portion 165 and extends outward in the width direction of the second housing 111. The second contact portion 166 is a portion that is bent and connected downward to the outer end of the connection portion 164 and extends downward.

  The second terminal 161 is integrated with the second housing 111 by overmolding. That is, the second housing 111 is molded by filling a resin into a cavity of a mold in which the second terminals 161 are previously set. Thereby, the main body of the second terminal 161 is buried in the second housing 111, and the surfaces of the first contact portion 165, the connection portion 164, and the second contact portion 166 are fitted to the side surfaces of the second convex portion 112. It is integrally attached to the second housing 111 with the surface exposed. In this case, for example, six second terminals 161 are arranged on the left and right sides at a pitch of about 0.4 [mm]. Note that the pitch and number of the second terminals 161 can be changed as appropriate.

  Second projecting end portions 122 as second fitting guide portions are disposed at both ends of the second housing 111 in the longitudinal direction. The second projecting end portion 122 is a thick member that extends in the width direction of the second housing 111 and that has both ends connected to both ends in the longitudinal direction of each second convex portion 112, and its upper surface is substantially rectangular. It has a shape. And the said 2nd protrusion end part 122 is inserted in the protrusion end recessed part 22 of the 1st protrusion end part 21 with which the said 1st connector 1 is provided in the state in which the 1st connector 1 and the 2nd connector 101 were fitted. It functions as an insertion convex part.

  In addition, a restricting portion receiving groove portion 127 is formed on the surface of the second protruding end portion 122 on the fitting surface side, that is, the upper surface. The restriction portion receiving groove portion 127 is a groove-like recessed portion extending in the longitudinal direction of the second housing 111, and when the second protruding end portion 122 is inserted into the protruding end recessed portion 22 of the first connector 1. First, the first bracket position restricting portion 27 enters.

  Furthermore, a second reinforcing metal fitting 151 as a reinforcing metal fitting is attached to the second protruding end portion 122. The second reinforcing metal fitting 151 is housed and held in a second metal fitting holding recess 126 formed in the second protruding end portion 122. The slot-shaped opening of the second metal fitting holding recess 126 on the upper surface of the second protruding end portion 122 extends in the width direction of the second housing 111 and crosses the restriction portion receiving groove portion 127.

  In the present embodiment, the second reinforcing metal fitting 151 is a member that is integrally formed by performing a process such as punching on a conductive metal plate, and extends in the width direction of the second housing 111 as a whole. An elongated belt-like second main body 152, a second substrate connecting portion 156 connected to both left and right ends of the second main body 152 and extending in the direction of the mounting surface, and further protruding from the upper end of the second main body 152 And a fixed contact piece 158 extending so as to. The fixed contact piece 158 includes a non-switch contact piece 158a and a switch contact piece 158b.

  The second reinforcing metal fitting 151 is fixed to the second housing 111 by being fitted into the second metal fitting holding recess 126 from the fitting surface side and sandwiched from both sides by the side wall of the second metal fitting holding recess 126. Is done. At this time, the reinforcing metal fitting side reference surface 152a, which is an edge surface on the mounting surface side of the second main body 152, comes into contact with a housing side reference surface 126a described later disposed in the second metal fitting holding recess 126. As a result, the second reinforcement fitting 151 is positioned. In the positioned state, the non-switch contact piece 158 a and the switch contact piece 158 b protrude from the upper surface of the second protruding end portion 122. In addition, the restriction part accommodation recessed part 157 which is a part between the non-switch contact piece 158a and the switch contact piece 158b on the edge surface on the fitting surface side of the second main body part 152 is more than the restriction part accommodation groove part 127. Does not protrude.

  FIG. 7 shows the postures of the second reinforcement fittings 151 fixed to the second housing 111, respectively. FIG. 7 can also be said to be obtained by deleting the second housing 111 and the second terminal 161 from FIG.

  The upper end portion of the switch contact piece 158 b is wider than the upper end portion of the non-switch contact piece 158 a and is a straight portion 159 extending in the width direction of the second housing 111. The linear portion 159 functions as a contact portion of a second reinforcing metal fitting 151 that functions as a switching member of a switch for electrically detecting complete fitting between the first connector 1 and the second connector 101, It contacts the first switch fitting 51b of the first connector 1. Accordingly, the straight line portion 159 is formed at a position corresponding to a range where the inclined portion 59 of the first switch fitting 51b in the first connector 1 as the counterpart connector is located.

  Further, the upper end portion of the non-switch contact piece 158a also contacts the upper surface of the first contact piece 58a of the first non-switch fitting 51a in a state where the first connector 1 and the second connector 101 are completely fitted. . Therefore, the non-switch contact piece 158a is formed at a position corresponding to a range where the vicinity of the free end of the first contact piece 58a of the first non-switch fitting 51a in the first connector 1 is located.

  Further, the second substrate connecting portion 156 functions as a solder tail portion of the second reinforcing metal fitting 151, and its lower surface is formed so as to be substantially parallel to the mounting surface of the second housing 111. It fixes to the 2nd fixing pad 193 mentioned later by soldering.

  Next, an operation for fitting the first connector 1 and the second connector 101 having the above-described configuration will be described.

  FIG. 8 is a perspective view showing the relationship between the board-to-board connector and the board in the embodiment of the present invention, and FIG. 9 is the first terminal in a state in which the board-to-board connector has been fitted in the embodiment of the present invention. And FIG. 10 is a cross-sectional view taken along the line AA in FIG. 4, and FIG. 10 is a first reinforcement in a state where the board-to-board connector fitting is completed in the embodiment of the present invention. It is sectional drawing which shows the relationship between a metal fitting and a 2nd reinforcement metal fitting, and is BB arrow sectional drawing in FIG.

  In the present embodiment, on the first substrate 91, as shown in FIG. 8, first fixing pads 93-1 to 93-4 as detection pads and detection pads 94-1 and 94 are provided. -2 is arranged. Note that when the first fixing pads 93-1 to 93-4 and the detection pads 94-1 and 94-2 are described in an integrated manner, the first fixing pad 93 and the detection pad 94, respectively. Will be described. In FIG. 8, for convenience of explanation, illustration of a terminal connection pad to which the tail portion 62 of the first terminal 61 is connected is omitted.

  The first fixing pad 93 is a pad to which the first substrate connecting portion 56 of the first reinforcing bracket 51 is fixed, and is made of a conductive metal or the like. The first fixing pad 93 is a first substrate connecting portion 56 of each first reinforcing bracket 51. It is arrange | positioned in the position corresponding to. The detection pad 94 is, for example, a pad to which a pair of terminals of an inspection device such as a tester is connected. The detection pad 94 is made of conductive metal or the like, and is arranged near the position where the first connector 1 is mounted. It is installed.

  The detection pad 94-1 is a first fixing pad to which the first substrate connection portion 56b of the first switch fitting 51b is fixed and connected via the first detection conductive trace 95-1. 93-1 and the detection pad 94-2 is connected to the first board connecting portion 56b of the other first switch metal fitting 51b via the first detection conductive trace 95-2. It is electrically connected to the first fixing pad 93-4. When the first detection conductive traces 95-1 and 95-2 are described in an integrated manner, the first detection conductive trace 95 will be described. In other words, the detection pad 94 is positioned diagonally via the first detection conductive trace 95, and a pair of first fixing pins to which the first substrate connecting portion 56b of the first switch fitting 51b is fixed. The pads 93 are electrically connected to each other.

  Further, as shown in FIG. 8, second fixing pads 193-1 to 193-4 as fixing pads are disposed on the second substrate 191. When the second fixing pads 193-1 to 193-4 are described in an integrated manner, the second fixing pads 193 will be described. In FIG. 8, the second fixing pad 193 is drawn with a solid line, whereas the second substrate 191 itself is drawn virtually. This is because the second fixing pad 193 is disposed on the lower surface of the second substrate 191 in the figure, and therefore it cannot be seen behind the second substrate 191 under the original condition. It is. Further, in FIG. 8, for convenience of explanation, illustration of a terminal connection pad to which the tail portion 162 of the second terminal 161 is connected is omitted.

  The second fixing pad 193 is a pad to which the second board connecting portion 156 of the second reinforcing metal fitting 151 is fixed, and is made of a conductive metal or the like, and the second board connecting portion 156 of each second reinforcing metal fitting 151. It is arrange | positioned in the position corresponding to. The second fixing pad 193-1 and the second fixing pad 193-4 are electrically connected to each other via the second detection conductive trace 195. In other words, each of the pair of second fixing pads 193 positioned on the diagonal line is electrically connected to each other via the second detection conductive trace 195. The second fixing pads 193 that are electrically connected to each other are positioned substantially opposite to the first fixing pads 93 that are electrically connected to the detection pads 94 on the first substrate 91.

  When the first connector 1 and the second connector 101 are fitted, the first connector 1 has the tail portion 62 of the first terminal 61 connected to the terminal connection pad on the first substrate 91 by soldering or the like. At the same time, the first board connecting portion 56 of the first reinforcing bracket 51 is connected to the first fixing pad 93 on the first board 91 by soldering or the like, so that it is surface-mounted on the first board 91 in advance. It shall be. In the second connector 101, the tail portion 162 of the second terminal 161 is connected to the terminal connection pad on the second substrate 191 by soldering or the like, and the second substrate connection portion 156 of the second reinforcing bracket 151 is connected to the second connector 101. It is assumed that the surface is mounted in advance on the second substrate 191 by being connected to the second fixing pad 193 on the second substrate 191 by soldering or the like.

  In FIGS. 9 and 10, the first substrate 91 and the second substrate 191 are not shown for convenience of explanation.

  The operator aligns the first connector 1 and the second connector 101 with the fitting surface of the first connector 1 and the fitting surface of the second connector 101 facing each other. Alternatively, the second connector 101 is moved in the direction approaching the other side, that is, in the fitting direction.

  Thereby, the left and right second convex portions 112 of the second connector 101 are inserted into the left and right concave groove portions 12 a of the first connector 1. And the 2nd terminal 161 of the 2nd connector 101 is inserted between the 1st contact part 65 of each 1st terminal 61, and the 2nd contact part 66, and the 1st contact part 65 of the 1st terminal 61 is the 2nd terminal. 161 contacts the surface of the first contact portion 165, and the second contact portion 66 of the first terminal 61 contacts the surface of the second contact portion 166 of the second terminal 161. Thereby, the space | interval of the 1st contact part 65 in the 1st terminal 61 and the 2nd contact part 66 is expanded by the 2nd terminal 161, and is extended elastically.

  Subsequently, when the operator further moves the second connector 101 relative to the first connector 1 in the fitting direction, and the fitting between the first connector 1 and the second connector 101 is completed, the fitting is complete. 9, the first contact portion 65 of the first terminal 61 is in contact with the second terminal 161, and the second contact portion 66 of the first terminal 61 is in contact with the second contact recess 166 a of the second terminal 161. It will be in the engaged state.

  As a result, the conductive trace connected to the terminal connection pad on the first substrate 91 to which the tail portion 62 of the first terminal 61 is connected, and the second substrate 191 to which the tail portion 162 of the second terminal 161 is connected. The conductive trace connected to the terminal connection pad becomes conductive.

  Further, when the fitting between the first connector 1 and the second connector 101 is completed, that is, when the fitting is complete, as shown in FIG. 10, the switch contact piece of the second reinforcing metal fitting 151 of the second connector 101. The tip of the first contact piece 58b of the first switch fitting 51b of the first connector 1 is brought into contact with the upper end of 158b (the lower end in FIG. 10) to conduct. That is, the inclined portion 59 comes into contact with the linear portion 159 and is conducted. As a result, the detection circuit for detecting the completion of fitting between the first connector 1 and the second connector 101 is closed, and it is electrically confirmed that the first connector 1 and the second connector 101 are completely fitted. Detected. That is, the first switch fitting 51b and the second reinforcement fitting 151 function as a switching member for a switch for detecting complete fitting, and the first contact piece 58b and the switch contact piece 158b are in contact with each other.

  The detection circuit will be described with reference to the example shown in FIG. 8. Detection pad 94-1: first detection conductive trace 95-1: first fixing pad 93-1: upper left first switch Metal fitting 51b: Upper second reinforcing metal fitting 151: Second fixing pad 193-1: Second detection conductive trace 195: Second fixing pad 193-4: Lower second reinforcing metal fitting 151 1: Right lower second 1 switch fitting 51b: first fixing pad 93-4: first detection conductive trace 95-2: detection pad 94-2. Therefore, for example, if a pair of terminals of an inspection device that can detect the conduction state of a circuit, such as a tester, is connected to the detection pad 94-1 and the detection pad 94-2, the detection circuit is closed and conductive. It is possible to detect the state, and thereby it is possible to electrically detect complete fitting between the first connector 1 and the second connector 101.

  The reinforcing metal fitting side reference surface 152 a of the second main body 152 is in contact with the housing side reference surface 126 a in the second metal fitting holding recess 126. Typically, the reinforcing bracket side reference surface 152a and the housing side reference surface 126a are formed with higher accuracy than other members. Therefore, the position and posture with respect to the second housing 111 are accurately maintained by the reinforcing metal fitting side reference surface 152a coming into contact with the housing side reference surface 126a. Therefore, the position of the switch contact piece 158b with respect to the second housing 111, that is, the position of the second connector 101 is also accurate. Therefore, complete fitting between the first connector 1 and the second connector 101 can be accurately detected.

  By the way, as shown in FIG. 10, when the fitting of the first connector 1 and the second connector 101 is completed, the upper end of the non-switch contact piece 158a of the second reinforcing metal fitting 151 of the second connector 101 (in FIG. The tip of the first contact piece 58a of the first non-switch fitting 51a of the first connector 1 also contacts the lower end. Since the non-switch contact piece 158a and the first contact piece 58a do not function as a switching member of a complete fitting detection switch, the point of view of electrical detection of complete fitting between the first connector 1 and the second connector 101. Therefore, either one or both can be omitted.

  However, the first contact piece 58b of the first switch fitting 51b has elasticity and also functions as a cantilever-like spring member. The first contact piece 58b faces upward in FIG. 10 with respect to the switch contact piece 158b of the second reinforcement fitting 151. Grants an energizing force. Therefore, in consideration of the balance of the forces received from below by the second reinforcing metal member 151 and the second connector 101 on the left and right in FIG. 10, the non-switch contact piece 158a and the first contact piece 58a are not omitted, It is desirable that the non-switch contact piece 158a receive a biasing force from the first contact piece 58a that functions as a spring member.

  Next, the operation when the first contact piece 58b and the switch contact piece 158b come into contact with each other will be described in detail.

  FIG. 11 is a perspective view showing a state where the first contact piece and the switch contact piece are in contact with each other according to the embodiment of the present invention, and FIG. 12 is an inclined portion of the first contact piece and the switch according to the embodiment of the present invention. The perspective view which shows the change of the positional relationship with the linear part of the contact piece for operation, FIG. 13 shows the change of the positional relationship between the inclination part of the 1st contact piece and the linear part of the contact piece for switches in embodiment of this invention It is a top view. 12 and 13, (a) is a diagram showing a state where the first contact piece and the switch contact piece have started to contact, and (b) is a diagram showing a state where the first contact piece is elastically deformed. It is.

  The first connector 1 and the second connector 101 are fitted, and the first switch fitting 51b of the first connector 1 is connected to the straight portion 159 of the switch contact piece 158b of the second reinforcement fitting 151 of the second connector 101. When the inclined portion 59 of the first contact piece 58b comes into contact, the positional relationship between the second reinforcing metal fitting 151 and the first switch metal fitting 51b is as shown in FIGS. 11, 12 (a) and 13 (a). . As described above, the linear portion 159 extends in the width direction of the second housing 111, and the inclined portion 59 is orthogonal to the extending direction of the first contact piece 58b extending in the longitudinal direction of the first housing. Without tilting. Therefore, in the state where the linear portion 159 and the inclined portion 59 are in contact, the extending direction of the inclined portion 59 is the extension of the linear portion 159 as shown in FIGS. 11, 12 (a) and 13 (a). Inclined with respect to direction.

  And when fitting the 1st connector 1 and the 2nd connector 101, as shown in Drawing 11, 12 (a), and 13 (a), switch contact piece 158b of the 2nd reinforcement metal fitting 151 is shown. The second connector 101 is further moved relative to the first connector 1 in the fitting direction from the state in which the inclined portion 59 of the first contact piece 58b of the first switch fitting 51b is in contact with the linear portion 159. Thus, complete fitting, that is, fitting between the first connector 1 and the second connector 101 is completed. Accordingly, the positional relationship between the second reinforcing metal fitting 151 and the first switch metal fitting 51b is as shown in FIGS. 12 (b) and 13 (b).

  Specifically, the first switch fitting 51b having a shape like a plate-shaped cantilever is received by receiving a downward pressing force in FIG. 12 from the switch contact piece 158b of the second reinforcement fitting 151. The contact piece 58b is elastically deformed as a whole, and the inclined portion 59 formed at the tip thereof is elastically displaced downward. Since the extending direction of the inclined portion 59 of the first contact piece 58b is inclined with respect to the extending direction of the linear portion 159 of the switch contact piece 158b, the contact point between the inclined portion 59 and the linear portion 159 is As the inclined portion 59 is displaced downward, the inclined portion 59 is displaced in the extending direction.

  By comparing the state shown in FIG. 13 (a) with the state shown in FIG. 13 (b), the first connector 1 and the second connector 1 are connected to the second connector 1 after the linear portion 159 and the inclined portion 59 start to contact each other. Until the fitting with the connector 101 is completed, the contact point between the inclined portion 59 and the straight portion 159 moves toward the tip of the first contact piece 58b by a certain distance along the inclined portion 59. I understand that Thereby, it can be seen that the inclined portion 59 and the linear portion 159 slide relative to each other, and so-called wiping is performed. That is, wiping can be obtained by amplifying the minute downward displacement of the contact point between the inclined portion 59 and the linear portion 159 to the displacement in the extending direction of the inclined portion 59. Therefore, the surfaces of the inclined portion 59 and the straight portion 159 are reliably cleaned by sufficient wiping, and contact failure can be reliably prevented.

  By the way, since the area of the first board 91 and the second board 191 is usually considerably larger than the area of the fitting surface of the first connector 1 and the second connector 101, the operator can fit the first connector 1. The surface and the fitting surface of the second connector 101 cannot be visually observed, and the fitting operation is performed by groping. Therefore, the operator cannot grasp the positional relationship between the fitting surface of the first connector 1 and the fitting surface of the second connector 101, and the fitting between the first connector 1 and the second connector 101 is completed. It is impossible to determine whether or not the first connector 1 and / or the second connector 101 are further moved in the fitting direction even after the fitting of the first connector 1 and the second connector 101 is completed. It may be.

  In such a case, the first contact piece 58 is elastically deformed downward in FIG. 12, that is, in the fitting direction, so that further displacement of the second connector 101 with respect to the first connector 1, specifically, Absorbs further displacement of the stationary contact piece 158. Therefore, even when the second connector 101 is further displaced from the fully fitted position in the fitting direction with respect to the first connector 1, the contact between the first contact piece 58 and the fixed contact piece 158 is maintained. Therefore, the contact reliability between the first contact piece 58 and the fixed contact piece 158 is improved. Further, the range in which the inclined portion 59 and the linear portion 159 slide relative to each other is widened, and a wider range of the surfaces of the inclined portion 59 and the linear portion 159 is cleaned by wiping. As a result, the reliability of the detection circuit is improved and the detection accuracy of complete fitting between the first connector 1 and the second connector 101 is improved.

  Thus, in the present embodiment, the board-to-board connector includes the first terminal 61 and the first connector 1 including the first housing 11 having the first protruding end portions 21 formed at both ends in the longitudinal direction, A second connector 101 comprising: a second terminal 161 in contact with the first terminal 61; and a second housing 111 formed at both ends in the longitudinal direction and having a second projecting end portion 122 fitted to the first projecting end portion 21; And a switch that closes a detection circuit that electrically detects complete engagement between the first connector 1 and the second connector 101, the switch including switching members that can contact each other, The contact portion is an inclined portion 59, and the extending direction of the inclined portion 59 is inclined with respect to the extending direction of the linear portion 159 that is the contact portion of the other switching member.

  Thereby, it is possible to accurately confirm complete fitting between the first connector 1 and the second connector 101 without depending on the operator's visual observation, hand feeling, listening to a click sound, etc., that is, without depending on the operator's five senses. . Further, the surfaces of the inclined portion 59 and the straight portion 159 are reliably cleaned by sufficient wiping, and contact failure can be reliably prevented. Therefore, even when the first connector 1 and the second connector 101 are reduced in size and reduced in height and it is difficult to confirm the completion of fitting depending on the operator's visual observation, hand touch, listening to click sound, etc. The occurrence of incomplete fitting in the fitting process can be reliably prevented, and a highly reliable board-to-board connector can be provided.

  In addition, the first connector 1 has a first reinforcing bracket 51 disposed at the first protruding end portion 21, and the second connector 101 is a second reinforcing bracket 151 disposed at the second protruding end portion 122. One switching member is the first reinforcing bracket 51, and the other switching member is the second reinforcing bracket 151. In this way, the first reinforcing metal fitting 51 and the second reinforcing metal fitting 151 that improve the mounting strength of the first connector 1 and the second connector 101 on the first board 91 and the second board 191 are completely fitted. This is used as a part of a detection circuit for detection. Therefore, since it is not necessary to separately attach a member for detecting complete fitting to the first connector 1 or the second connector 101, an increase in the size of the first connector 1 or the second connector 101 and an increase in the number of parts can be prevented. be able to. Further, since the first terminal 61 or the second terminal 161 is not used for the detection circuit, the number of terminals or the number of poles is not substantially reduced.

  Further, the first reinforcing bracket 51 includes a first contact piece 58b, the second reinforcing bracket 151 includes a switch contact piece 158b, and when the first connector 1 and the second connector 101 move relatively in the fitting direction. The inclined portion 59 at the tip of the first contact piece 58b is elastically displaced while maintaining contact with the straight portion 159 at the tip of the switch contact piece 158b. As described above, since the first contact piece 58b is elastically deformed in the fitting direction to absorb the displacement of the second connector 101 in the fitting direction with respect to the first connector 1, the reliability of the detection circuit is improved. In addition, the detection accuracy of complete fitting between the first connector 1 and the second connector 101 is improved.

  In addition, this invention is not limited to the said embodiment, It can change variously based on the meaning of this invention, and does not exclude them from the scope of the present invention.

  The present invention can be applied to a board-to-board connector.

DESCRIPTION OF SYMBOLS 1,801 1st connector 11,811 1st housing 12,812 Recessed part 12a, 113 Groove part 13 First convex part 14 Side wall part 15a First terminal accommodation inner cavity 15b First terminal accommodation outer cavity 21 First protrusion end part 21b Side wall extension 21c End wall 22 Projection end recess 26 First bracket holding recess 26a First non-switch bracket holding slit portion 26b First switch bracket holding slit portion 27 First bracket position restricting portion 51a First non-switch bracket 51b First switch fittings 56a, 56b First board connection portions 57a, 57b, 63 Held portions 58a, 58b First contact pieces 59 Inclined portions 61, 861 First terminals 62, 162 Tail portion 64 Lower connection portion 65, 165 1st contact part 66,166 2nd contact part 67 Upper side connection part 91,891 1st board | substrate 93-1,93-2,93- 93-4 First fixing pads 94-1 and 94-2 Detection pads 95-1 and 95-2 First detection conductive traces 101 and 901 Second connectors 111 and 911 Second housing 112 Second convex portion 122 Second protruding end 126 Second metal fitting holding recess 126a Housing-side reference surface 127 Restricting portion receiving concave groove portion 151 Second reinforcing metal fitting 152 Second main body portion 152a Reinforcing metal fitting side reference surface 156 Second substrate connecting portion 157 Restricting portion receiving concave portion 158a Non-switch contact piece 158b Switch contact piece 159 Linear portion 161, 961 Second terminal 164 Connection portion 166a Second contact recess 191, 991 Second substrate 193-1, 193-2, 193-3, 193-4 Second Fixing pad 195 Second detection conductive trace 813 Engaging convex portion 851 First metal fitting 852 First tail portion 853 First lock protrusion 9 3 engaging recesses 951 second fitting 952 second tail portion 953 second locking projections

Claims (5)

(A) a first connector comprising a first terminal and a first housing having first fitting guide portions formed at both longitudinal ends;
(B) a second connector comprising: a second terminal that contacts the first terminal; and a second housing that is formed at both ends in the longitudinal direction and has a second fitting guide portion that fits the first fitting guide portion. A board-to-board connector comprising:
(C) a switch that closes a detection circuit that electrically detects complete fitting between the first connector and the second connector;
(D) The switch includes switching members that can contact each other, the contact portion of one switching member is an inclined portion, and the extending direction of the inclined portion is a linear portion that is the contact portion of the other switching member A board-to-board connector, which is inclined with respect to the extending direction of the board. The first connector has a first reinforcing bracket disposed in the first fitting guide portion,
The second connector has a second reinforcing bracket disposed on the second fitting guide portion,
The board-to-board connector according to claim 1, wherein the one switching member is the first reinforcing bracket and the other switching member is the second reinforcing bracket. The first reinforcing bracket includes an elastic contact piece, and the second reinforcing bracket includes a fixed contact piece,
When the first connector and the second connector move relative to each other in the fitting direction, the inclined portion at the tip of the elastic contact piece elastically maintains contact with the straight portion at the tip of the fixed contact piece. The board-to-board connector according to claim 2, which is displaced. The board-to-board connector according to any one of claims 1 to 3, wherein the inclined portion and the linear portion slide to each other to perform wiping. 2. The first reinforcing bracket and the second reinforcing bracket are electrically connected to a fixing pad on a substrate, a detection pad is formed on the substrate, and the detection pad serves as both ends of the detection circuit. The board-to-board connector according to claim 1.

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