JP5611100B2 - Board to board connector - Google Patents

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. 13 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. A switch that closes a detection circuit that electrically detects complete engagement between the first connector and the second connector, the switch including switching members that can contact each other, The center includes a plate-shaped elastic contact piece that is displaceable at both ends, and the other switching member includes a pair of left and right fixed contact pieces that can contact a portion closer to both ends than the center of the elastic contact piece. .

  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. The switching member has a second reinforcing bracket, one of the switching members is the first reinforcing bracket, and the other is the second reinforcing bracket.

  In yet another board-to-board connector of the present invention, the first reinforcing bracket further includes a main body portion fixed to the first housing, and a connecting portion for connecting the main body portion and the elastic contact piece. The center of the elastic contact piece is supported by the connecting portion, and displacement in the fitting direction is restricted.

  In still another board-to-board connector of the present invention, the first housing further includes a first support member, and the center of the elastic contact piece is supported by the first support member, and is connected to the fitting direction. Displacement is regulated.

  In still another board-to-board connector according to the present invention, the first housing further includes a second support member, and the center of the elastic contact piece is supported by the second support member and is in a counter-fitting direction. Displacement is regulated.

  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 exploded view of the 1st connector in the 1st Embodiment of this invention, and the 2nd connector, and the figure seen from the fitting surface side of the 1st connector. It is a figure which shows the relationship between the housing of the 1st connector and the 1st reinforcement metal fitting in the 1st Embodiment of this invention, and is the figure which deleted a part of 1st connector. It is the perspective view of the housing of the 1st connector in the 1st Embodiment of this invention, and the figure seen from the fitting surface side of the 1st connector. It is the perspective view which shows the state which the 1st connector and 2nd connector in the 1st Embodiment of this invention fitted each other, and is the figure seen from the fitting surface side of the 1st connector. It is a perspective view which shows the relationship between the board-to-board connector and board | substrate in the 1st Embodiment of this invention. It is sectional drawing which shows the relationship between the 1st terminal and 2nd terminal in the state which the fitting of the board | substrate to board connector in the 1st Embodiment of this invention was completed, and is AA arrow sectional drawing in FIG. . It is a figure which shows the relationship between the 1st reinforcement metal fitting and the 2nd reinforcement metal fitting in the state which the fitting of the board | substrate to board connector in the 1st Embodiment of this invention was completed, and shows a part of 1st housing and 2nd housing FIG. FIG. 5 is a cross-sectional view showing a relationship between the first reinforcing bracket and the second reinforcing bracket in a state where the board-to-board connector is completely fitted in the first embodiment of the present invention, and is a cross-sectional view taken along line BB in FIG. It is. It is sectional drawing which shows the relationship between the 1st reinforcement metal fitting and the 2nd reinforcement metal fitting in the state displaced further in the fitting direction after completion of the fitting of the board | substrate to board connector in the 1st Embodiment of this invention. . It is the perspective view of the housing of the 1st connector in the 2nd Embodiment of this invention, and the figure seen from the fitting surface side of the 1st connector. It is a figure which shows the relationship between the 1st reinforcement metal fitting and the 2nd reinforcement metal fitting in the state which the fitting of the board | substrate to board connector in the 3rd Embodiment of this invention was completed, A part of 1st housing and 2nd housing is shown. FIG. It is a perspective view which shows the connection relation of the detection pad and fixing pad in the 3rd Embodiment of this invention. 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.

  FIG. 1 is an exploded view of the first connector and the second connector in the first embodiment of the present invention, and is a view seen from the fitting surface side of the first connector, and FIG. 2 is the first embodiment of the present invention. FIG. 3 is a diagram showing the relationship between the housing of the first connector and the first reinforcing metal fitting in FIG. 3, with a part of the first connector removed, FIG. 3 being a perspective view of the housing of the first connector according to the first embodiment of the present invention. FIG. 4 is a view seen from the fitting surface side of the first connector, 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 first embodiment of the present invention. It is the figure seen from the fitting surface side of 1 connector.

  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 with each other. 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 receiving cavity 15 from the mounting surface side (lower side in FIG. 1), and the held terminal 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 outer 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 protruding end recess 22 functions as an insertion recess into which the second protruding 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.

  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, a pair of left and right first reinforcing brackets 51 are disposed in each protruding end recess 22, and are housed and held in a first bracket holding recess 26 formed at the bottom of the protruding end recess 22. . A first metal position restricting portion 27 extending from the first convex portion 13 is disposed in the first metal fitting holding recess 26. The first metal fitting position restricting portion 27 includes a first metal fitting lower restricting portion 27 a as a first support member located below the first reinforcing metal fitting 51 and a second metal fitting located above the first reinforcing metal fitting 51. 1st metal fitting upper part control part 27b as a supporting member is included. A first metal fitting holding slit (not shown) extending in the longitudinal direction of the first housing 11 is formed at the bottom of the side wall extension 21b.

  In the present embodiment, the first reinforcing metal fitting 51 is a member that is integrally formed by punching and bending a conductive metal plate, and extends in the width direction of the first housing 11. A first main body portion 52 as an elongated band-shaped main body portion; a pair of first substrate connection portions 56 extending in the longitudinal direction of the first housing 11 at both ends of the first main body portion 52; A pair of held portions 57 extending in the opposite direction to the first substrate connecting portion 56 at both ends, and an elongated belt-like elastic contact piece extending in the width direction of the first housing 11 parallel to the first main body portion 52 As a first contact piece 58 and a connecting portion 53 that connects the first main body 52 and the first contact piece 58 in the vicinity of the center in the width direction of the first housing 11. The length of the first contact piece 58, that is, the dimension in the width direction of the first housing 11 is shorter than that of the first main body 52 and can be accommodated in the first metal fitting holding recess 26. .

  The first body portion 52 is configured such that the held portion 57 is inserted into the first metal fitting holding slit portion from both longitudinal sides of the first housing 11 and is held in the first metal fitting holding slit portion, thereby It is fixed to the housing 11. The first substrate connecting portion 56 functions as a solder tail portion of the first reinforcing bracket 51 and is formed such that its lower surface is substantially parallel to a mounting surface (not shown) of the first housing 11. It fixes to the 1st fixing pad 93 mentioned later by soldering etc. above. Moreover, since the center part of the said 1st contact piece 58 is supported by the connection part 53, the displacement to a fitting direction and a counterfitting direction, ie, an up-down direction, is controlled.

  Further, as shown in FIG. 2, 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, and its longitudinal direction, that is, the width of the first housing 11. A central portion in the direction is inserted into a gap between the first metal fitting lower regulating portion 27a and the first metal fitting upper regulating portion 27b. As a result, the central portion of the first contact piece 58 is supported from below by the first metal fitting lower restricting portion 27a, and displacement in the fitting direction, that is, downward is restricted. Further, the central portion of the first contact piece 58 is supported from above by the first metal fitting upper restricting portion 27b, and the displacement in the anti-fitting direction, that is, the upward direction is restricted.

  Note that a step is formed in the connection portion between the first substrate connecting portion 56 and the first main body portion 52, and the first main body portion 52 and the first contact piece 58 are parallel to the first substrate connecting portion 56, It is located closer to the fitting surface than the first substrate connecting portion 56, and the distance from the lower surface to the first substrate 91 is larger than the distance from the lower surface of the first substrate connecting portion 56 to the first substrate 91. Is set.

  On the other hand, 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 that is inserted into the first connector 1, that is, on the fitting surface side (the lower side in FIG. 1), an elongate groove (not shown) that extends 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 outer side of the concave groove portion and extends in the longitudinal direction of the second housing 111. The second protrusion 112 is formed along both sides of the groove 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.

  The concave groove portion is closed on the side mounted on the second substrate 191, that is, on the mounting surface (upper surface in FIG. 1) side by the bottom portion. 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 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 and bending a conductive metal plate, and includes a main body (not shown) and a lower end of the main body (shown in FIG. 1). A tail portion 162 connected to the upper end in the posture, a first contact portion 165 described later connected to an upper end of the main body portion (a lower end in the posture shown in FIG. 1), and an upper end of the first contact portion 165 And a second contact portion 166 connected to the outer end of the connection portion 164. 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 not shown in FIG. 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 whose both ends are connected to both ends in the longitudinal direction of each second convex portion 112, and its upper surface (in FIG. 1). The lower surface has a generally rectangular 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.

  Further, 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.

  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 strip-shaped second main body 152, a second substrate connecting portion 156 connected to the left and right ends of the second main body 152 and extending in the direction of the mounting surface, and an upper end of the second main body 152 (FIG. 1). And a pair of left and right second fitting completion detection units 158 as fixed contact pieces extending so as to protrude further from the lower end).

  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.

  The upper end surface of the second fitting completion detection unit 158 is a portion that is in contact with and conductive with the upper surface of the first contact piece 58 in a state where the first connector 1 and the second connector 101 have been fitted. Therefore, the second fitting completion detection portion 158 is formed at a position corresponding to a position closer to the free end than the center portion of the first contact piece 58 in the first connector 1 as the counterpart connector. 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 to be substantially parallel to a mounting surface (not shown) of the second housing 111, and the second substrate 191. It is fixed to a second fixing pad 193, which will be described later, by soldering or the like.

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

  FIG. 5 is a perspective view showing the relationship between the board-to-board connector and the board in the first embodiment of the present invention, and FIG. 6 is the completion of the board-to-board connector fitting in the first embodiment of the present invention. FIG. 7 is a cross-sectional view showing the relationship between the first terminal and the second terminal in the state, and is a cross-sectional view taken along the line AA in FIG. 4, and FIG. FIG. 8 is a diagram showing a relationship between the first reinforcing metal fitting and the second reinforcing metal fitting in a completed state, in which a part of the first housing and the second housing is deleted, and FIG. 8 is a substrate according to the first embodiment of the present invention. FIG. 9 is a cross-sectional view showing a relationship between the first reinforcing bracket and the second reinforcing bracket in a state where the mating of the connector to the board is completed, and is a cross-sectional view taken along the line BB in FIG. 4, and FIG. After the board-to-board connector mating is complete, It is a sectional view showing a relationship between the first reinforcing brackets and the second reinforcing brackets in a state of being displaced.

  In this embodiment, on the first substrate 91, as shown in FIG. 5, 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. 5, 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 electrically connected to the first fixing pad 93-1 via the first detection conductive trace 95-1, and the detection pad 94-2 is connected to the first detection conductive trace 95-1. -2 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 electrically connected to each of the pair of first fixing pads 93 positioned diagonally via the first detection conductive trace 95.

  Further, as shown in FIG. 5, 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. 5, 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. 5, 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.

  6 to 9, 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. 6, the first contact portion 65 of the first terminal 61 is in contact with the first contact portion 165 of the second terminal 161, and the second contact portion 66 of the first terminal 61 is in contact with the second terminal 161. It will be in the state engaged with the 2nd contact recessed part 166a.

  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 FIGS. 7 and 8, the second fitting completion detection unit 158 of the second connector 101. The top surface of the first contact piece 58 of the first connector 1 is brought into contact with the upper end (the lower end in FIGS. 7 and 8) and is conducted. Specifically, the second fitting completion detection unit 158 comes into contact with a portion of the upper surface of the first contact piece 58 closer to both ends than the center portion of the first contact piece 58. 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 contact piece 58 and the second fitting completion detection unit 158 function as a switching member of a switch for detecting complete fitting.

  The detection circuit will be described with reference to the example shown in FIG. 5. Detection pad 94-1: first detection conductive trace 95-1: first fixing pad 93-1: upper first reinforcing bracket 51: Upper second reinforcing bracket 151: Second fixing pad 193-1: Second detection conductive trace 195: Second fixing pad 193-4: Lower second reinforcing bracket 151: Lower first reinforcing bracket 51: 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 the conduction state is established. This makes it possible to detect whether the first connector 1 and the second connector 101 are completely fitted.

  By the way, when the first connector 1 and the second connector 101 are fitted together, the first contact piece 58 of the first reinforcing bracket 51 comes into contact with the second fitting completion detection unit 158 of the second reinforcing bracket 151. From the state, the second connector 101 is further moved relative to the first connector 1 in the fitting direction, and the complete fitting, that is, the fitting between the first connector 1 and the second connector 101 is completed. It becomes a state.

  Thereby, the 1st contact piece 58 of the 1st reinforcement metal fitting 51 deform | transforms elastically, as FIG. 8 shows. Specifically, a plate-like shape extends in the width direction of the first housing 11 by receiving a downward pressing force in FIG. 8 from the second fitting completion detector 158 of the second reinforcing metal fitting 151. As for the 1st contact piece 58 of the 1st reinforcement metal fitting 51 provided with the whole, the front-end | tip of both sides, ie, a free end, is elastically displaced below elastically.

  As shown in FIG. 8, the longitudinal direction of the first contact piece 58, that is, the center portion in the width direction of the first housing 11, is supported from below by the first metal fitting lower regulating portion 27a. The central portion of the first contact piece 58 in the width direction of the first housing 11 is connected to and supported by the first main body 52 by a connecting portion 53. For this reason, when receiving a downward pressing force from the second fitting completion detection unit 158 located on both the left and right sides, the first contact piece 58 is not displaced downward in the center, and the free ends on both sides are displaced downward. , Elastically deforms so that the whole is curved.

  As described above, the function of the first contact piece 58 as a spring causes the free ends on both sides of the first contact piece 58 to be pressed against the lower surface of the second fitting completion detection unit 158 located on the left and right sides. The first reinforcing bracket 51 and the second reinforcing bracket 151 are reliably in contact with each other at two contact portions, and exhibit a stable function as a switch. In other words, since the first reinforcing bracket 51 and the second reinforcing bracket 151 function as a switch that contacts at a plurality of points, it is reliably stabilized that the first connector 1 and the second connector 101 are completely fitted. Detected.

  Further, the first contact piece 58 also exhibits a lever function with the central portion as a fulcrum. That is, when the free end on the one side of the first contact piece 58 is considered as a force point that receives a downward pressing force from the second fitting completion detection unit 158 on the one side, the free end on the other side of the first contact piece 58 is It can be considered that the second fitting completion detection unit 158 on the other side functions as a point of action for applying an upward force. That is, since the displacement of the first contact piece 58 at one contact portion functions to double the contact force between the first contact piece 58 and the second fitting completion detection portion 158 at the other contact portion, Contact at the contact portions on both sides is more reliable.

  Furthermore, as shown in FIG. 9, even when the position of the lower end of the second fitting completion detection unit 158 located on both the left and right sides is unbalanced due to errors such as manufacturing errors and assembly errors, the first contact The first reinforcing bracket 51 and the second reinforcing bracket 151 can be reliably brought into contact with each other at two contact portions by the function as a lever having the central portion of the piece 58 as a fulcrum.

  In addition, since the center part of the 1st contact piece 58 is inserted in the clearance gap between the 1st metal fitting lower side regulation part 27a and the 1st metal fitting upper side regulation part 27b, the displacement of an up-down direction is regulated. Therefore, the free end of the first contact piece 58 cannot be displaced in the fitting surface direction from the first metal fitting upper regulating portion 27b. Therefore, the first contact piece 58 and the second fitting completion detection unit 158 come into contact with each other in the state before the fitting is started after the fitting of the first connector 1 and the second connector 101 is started. Since the circuit is prevented from being in a conductive state, the fitting between the first connector 1 and the second connector 101 can be accurately detected.

  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 in the downward direction in FIG. 8, that is, in the fitting direction, so that further displacement of the second connector 101 with respect to the first connector 1, specifically, The second displacement completion detector 158 absorbs further displacement. Therefore, even when the second connector 101 is further displaced in the fitting direction from the fully fitted position with respect to the first connector 1, the first contact piece 58 and the second fitting completion detecting unit 158 Since the contact is maintained, the contact reliability between the first contact piece 58 and the second fitting completion detection unit 158 is improved. 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; Comprising 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, , Including a plate-shaped first contact piece 58 that is supported at the center and displaceable at both ends, and the other switching member is a pair of left and right first contacts that can abut on a portion closer to both ends than the center of the first contact piece 58. Including mating completion detecting section 158.

  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. . Moreover, the 1st reinforcement metal fitting 51 and the 2nd reinforcement metal fitting 151 contact reliably in two contact parts, and exhibit the stable function as a switch. 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 detecting. 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 main body portion 52 fixed to the first housing 11, and a connecting portion 53 that connects the first main body portion 52 and the first contact piece 58, and the first contact piece 58. Is supported by the connecting portion 53, and displacement in the fitting direction is restricted. Further, the first housing 11 has a first metal fitting lower regulating portion 27a, and the center of the first contact piece 58 is supported by the first metal fitting lower regulating portion 27a, and displacement in the fitting direction is regulated. . Thus, the displacement of the first contact piece 58 at one contact portion functions to double the contact force between the first contact piece 58 and the second fitting completion detection portion 158 at the other contact portion. The contact at the contact portions on both sides is more reliable. Furthermore, even when the position of the lower end of the second fitting completion detection unit 158 located on both the left and right sides is unbalanced, the first reinforcing bracket 51 and the second reinforcing bracket 151 can be reliably connected with two contact portions. Can touch.

  Furthermore, the 1st housing 11 has the 1st metal fitting upper side control part 27b, and the center of the 1st contact piece 58 is supported by the 1st metal fitting upper side control part 27b, and the displacement to a counter fitting direction is controlled. Accordingly, the first contact piece 58 and the second fitting completion detection unit 158 may come into contact with each other in a state before the fitting is started after the fitting of the first connector 1 and the second connector 101 is started. Therefore, the fitting between the first connector 1 and the second connector 101 can be accurately detected.

  Next, a second embodiment of the present invention will be described. In addition, about the thing which has the same structure as 1st Embodiment, the description is abbreviate | omitted by providing the same code | symbol. The description of the same operation and the same effect as those of the first embodiment is also omitted.

  FIG. 10 is a perspective view of the housing of the first connector according to the second embodiment of the present invention, viewed from the fitting surface side of the first connector.

  In the present embodiment, as shown in the figure, the first metal fitting upper regulating portion 27b is omitted. Therefore, although the center part of the 1st contact piece 58 is supported from the downward direction by the 1st metal fitting lower side regulation part 27a, it is not supported from the upper part.

  Note that the configuration and operation of other points of the first connector 1 and the second connector 101 and the first substrate 91 or the second substrate 191 are the same as those in the first embodiment, and thus description thereof is omitted. .

  Thus, in this Embodiment, since the 1st metal fitting upper side control part 27b is abbreviate | omitted, the 1st housing 11 can be manufactured easily. In other words, when the first housing 11 is integrally formed with an insulating material such as a synthetic resin using a mold, the first housing 11 is formed between the lower fitting restricting portion 27a and the first fitting upper restricting portion 27b. If there is a so-called undercut portion such as a concave portion, release of the molded product from the mold is hindered. However, in the present embodiment, since the first metal fitting upper restricting portion 27b is omitted, there is no undercut. Therefore, the molded first housing 11 is easily released from the mold. be able to.

  Next, a third embodiment of the present invention will be described. In addition, about the thing which has the same structure as 1st and 2nd embodiment, the description is abbreviate | omitted by providing the same code | symbol. Also, the description of the same operations and effects as those of the first and second embodiments is omitted.

  FIG. 11 is a diagram showing the relationship between the first reinforcing bracket and the second reinforcing bracket in a state where the board-to-board connector fitting is completed in the third embodiment of the present invention. FIG. 12 is a perspective view showing a connection relationship between a detection pad and a fixing pad according to the third embodiment of the present invention.

  In the present embodiment, as shown in FIG. 11, the second reinforcing metal fitting 151 is separated into left and right. That is, an intermediate portion of the elongated strip-shaped second main body 152 is missing, and the left and right second substrate connecting portions 156 and the second fitting completion detecting portion 158 are independent from each other.

  On the first substrate 91, as shown in FIG. 12, first fixing pads 93-1 to 93-4, and detection pads 94-1 and 94-2 are arranged. The detection pad 94-1 is electrically connected to the first fixing pad 93-2 via the first detection conductive trace 95-1, and the detection pad 94-2 is connected to the first detection conductive trace 95-. 2 is electrically connected to the first fixing pad 93-4.

  In addition, second fixing pads 193-1 to 193-4 are arranged on the second substrate 191. 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 FIG. 12, members other than the first reinforcing bracket 51 and the second reinforcing bracket 151 are not shown for the first connector 1 and the second connector 101.

  Note that the configuration and operation of other points of the first connector 1 and the second connector 101 and the first substrate 91 or the second substrate 191 are the same as those in the first embodiment, and thus description thereof is omitted. .

  In the first embodiment, the detection pad 94-1 is electrically connected to the first fixing pad 93-1 via the first detection conductive trace 95-1, whereas In the embodiment, the detection pad 94-1 is electrically connected to the first fixing pad 93-2 via the first detection conductive trace 95-1.

  Thereby, the 1st detection conductive trace 95-1 can be shortened, and the manufacturing cost of the 1st board | substrate 91 can be reduced.

  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 recessed groove part 13 1st convex part 14 side wall part 15a 1st terminal accommodation inner cavity 15b 1st terminal accommodation outer cavity 21 1st protrusion edge part 21b Side wall extension Portion 21c end wall portion 22 protruding end recess 26 first metal fitting holding recess 27 first metal fitting position restricting portion 27a first metal fitting lower restricting portion 27b first metal fitting upper restricting portion 51 first reinforcing metal fitting 52 first main body portion 53 connecting portion 56 1st board connection part 57,63 Hold | maintained part 58 1st contact piece 61,861 1st terminal 62,162 Tail part 64 Lower connection part 65,165 1st contact part 66,166 2nd contact part 67 Upper connection Portions 91 and 891 First substrates 93-1, 93-2, 93-3 and 93-4 First fixing pads 94-1 and 94-2 Detection pads 95-1 and 95-2 First detection Electrical trace 101, 901 Second connector 111, 911 Second housing 112 Second convex part 122 Second projecting end part 126 Second metal fitting holding concave part 151 Second reinforcing metal part 152 Second main body part 156 Second board connecting part 158 Second Fitting completion detection unit 161, 961 Second terminal 164 Connection unit 166a Second contact recess 191, 991 Second substrate 193-1, 193-2, 193-3, 194-4 Second fixing pad 195 Second detection Conductive trace 813 Engaging convex portion 851 First metal fitting 852 First tail portion 853 First lock protrusion 913 Engaging concave portion 951 Second metal fitting 952 Second tail portion 953 Second locking protrusion

Claims (6)

(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, and one switching member includes a plate-like elastic contact piece that is supported at the center and is displaceable at both ends, and the other switching member includes the elastic member. A board-to-board connector comprising a pair of left and right fixed contact pieces capable of contacting a portion closer to both ends than the center of the contact piece. 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 one of the switching members is the first reinforcing metal fitting and the other is the second reinforcing metal fitting. The first reinforcing bracket includes a main body portion fixed to the first housing, and a connecting portion that connects the main body portion and the elastic contact piece,
The board-to-board connector according to claim 1 or 2, wherein a center of the elastic contact piece is supported by the connecting portion and displacement in a fitting direction is restricted. The first housing has a first support member;
4. The board-to-board connector according to claim 1, wherein a center of the elastic contact piece is supported by the first support member and displacement in a fitting direction is restricted. 5. The first housing has a second support member;
4. The board-to-board connector according to claim 1, wherein a center of the elastic contact piece is supported by the second support member and displacement in a counter-fitting direction is restricted. 5. 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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