JP2011003291A - Electric wire-pair substrate connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric wire-pair substrate connector, for easily and surely recognizing completion of insertion-coupling by seeing from upward of the substrate, with easy insertion-coupling operation, for reducing a space necessary for the insertion-coupling operation, with a simple structure, for being downsized and lowered, and making reliability enhanced.SOLUTION: A second housing includes an exposed part for being seen from above the substrate. A first housing includes an exposed opening part capable exposing the exposed part, and a movable lid part for changing an opening degree of the exposed opening part. When the first housing is relatively moved from above the substrate to insertion-couple with the second housing, the movable lid part is displaced, then the exposing degree of the exposed part seen from above the substrate changes after completion of insertion-coupling of the first housing and the second housing.

Description

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

  Conventionally, a wire-to-board connector has been used to connect an electric wire such as a cable to a circuit board such as a printed circuit board (for example, see Patent Document 1). In such a wire-to-board connector, one connector is mounted on a circuit board and is fitted (engaged) with the other connector connected to the end of the cable.

  FIG. 13 is a side sectional view showing a series of fitting operations of a conventional wire-to-board connector.

  In the figure, reference numeral 901 denotes a board connector, which is mounted on a circuit board 991 included in an electronic device, an electric device, etc. (not shown). Reference numeral 801 denotes an electric wire connector which is connected to a terminal end of an electric wire 891 provided in the cable and is fitted to the board connector 901. The board connector 901 is disposed close to the wall 992 of the housing in a housing of an electronic device, an electrical device, or the like.

  The electric wire connector 801 includes a housing 811 and a terminal (not shown) attached to the housing 811 and connected to the electric wire 891. The housing 811 includes an elastic arm 812 extending in the connector fitting direction. The elastic arm 812 has a base end connected to the tip of the upper portion of the housing 811 and includes an upwardly protruding locking projection 816 formed on the upper surface of the intermediate portion.

  The board connector 901 includes a housing 911 and a terminal 961 attached to the housing 911. The terminal 961 has a substantially U-shape, one end in the lateral direction projects into the fitting space 913 of the housing 911, and the other end in the downward direction is inserted into the through hole of the circuit board 991 outside the housing 911. It is connected. The housing 911 includes a fitting space 913 into which a distal end portion of the housing 811 of the electric wire connector 801 is inserted, a stopper 912 formed on a top plate that defines an upper surface of the fitting space 913, and the top plate. And a locking frame portion 916 formed at the front end.

  Further, a fitting display piece 922 is rotatably attached to the upper portion of the housing 911 via a shaft pin 924. The front end portion 922a of the fitting display piece 922 is located in a notch 917 formed on the rear side of the locking frame portion 916. Further, the rear end portion 922b of the fitting display piece 922 is positioned close to the wall 992 of the housing. The fitting display piece 922 is urged clockwise by a leaf spring 926 in the drawing, but is positioned by coming into contact with a stopper 912 disposed on the top of the housing 911. In addition, the rear end portion 922b is located above the hole 994 formed in the wall 992 of the housing, and is thus not visible from the outside of the housing.

  When the wire connector 801 is fitted to the board connector 901, first, as shown in FIG. 13A, the operator operates the wire connector 801 with fingers or the like so that the front surface of the wire connector 801 is the board. The connector 901 is positioned so as to face the front surface.

  Subsequently, the electric wire connector 801 is moved in parallel to the circuit board 991, and the housing 811 enters the fitting space 913 of the board connector 901 from the tip as shown in FIG. 13B. At this time, when the locking projection 816 is pushed by the locking frame portion 916, the elastic arm 812 is greatly elastically deformed. Further, the rear end portion 922b is still located above the hole 994, so that it cannot be seen from the outside of the housing.

  Subsequently, when the electric wire connector 801 is further moved, the fitting between the electric wire connector 801 and the board connector 901 is completed as shown in FIG. As described above, when the fitting is completed, the locking projection 816 passes through the locking frame portion 916, so that the elastic arm 812 returns to the original posture. As a result, the front end portion 922a of the fitting display piece 922 is pushed up by the locking projection 816, so that the whole fitting display piece 922 rotates counterclockwise, and the rear end portion 922b reaches the position of the hole 994. Descend. As a result, the rear end 922b is visible from the outside of the housing.

  Therefore, the operator can determine whether or not the fitting between the wire connector 801 and the board connector 901 is completed from the outside of the housing by observing the rear end portion 922b through the hole 994.

JP 2002-237359 A

  However, in the conventional wire-to-board connector, since the fitting display piece 922, which is a separately formed member, is assembled to the housing 911 together with the leaf spring 926, the structure of the board connector 901 is complicated. Further, the size of the board connector 901 increases, and the manufacturing cost of the board connector 901 increases.

  Also, in recent years, with the miniaturization of electronic equipment and electrical equipment, the available space on the circuit board and around the circuit board has become narrower, along with miniaturization and low profile of the wire-to-board connector itself, There is also a demand for reducing the space required for the wire-to-board connector fitting operation. However, in the case of the conventional wire-to-board connector, a space for moving the wire connector 801 around the board connector 901 in parallel with the circuit board 991 is required in the fitting operation, and thus the above-mentioned requirement cannot be met. .

  Furthermore, if the conventional wire-to-board connector is reduced in size and reduced in height, the reduced-profile wire connector 801 is parallel to the circuit board 991 in the fitting space 913 of the reduced-in board connector 901. It is extremely difficult to move and insert accurately.

  The present invention solves the above-mentioned conventional problems, and the first connector connected to the end of the electric wire is mounted on the substrate surface by moving the first connector in a direction perpendicular to the substrate from above with the posture that the electric wire is parallel to the substrate. When the fitting is completed, a part of the housing of the first connector is displaced to change the degree of exposure as viewed from above the second connector on the upper surface. Completion can be easily and reliably visually confirmed from above the board, the fitting operation is easy, the space required for the fitting operation can be reduced, the structure is simple, and the size and height can be reduced. An object of the present invention is to provide a highly reliable wire-to-board connector.

  Therefore, in the wire-to-board connector of the present invention, a first connector having a first terminal connected to the wire, a first housing loaded with the first terminal, and the first terminal; A wire-to-board connector comprising: a second terminal in contact; and a second connector loaded with the second terminal and fitted in the first housing, the second connector being mounted on the board, The second housing includes an exposed portion that is visible from above the substrate. The first housing has an exposed opening that can expose the exposed portion, and a movable lid that changes an opening degree of the exposed opening. When the first housing is relatively moved from above the substrate and fitted into the second housing, the movable lid portion is displaced, and the exposed portion viewed from above the substrate is provided. The degree of exposure is the first It varies completed before and after the fitting of Ujingu and second housings.

  In another wire-to-board connector of the present invention, the movable lid portion is a free end of an engaging convex portion whose base is connected to the first housing, and the second housing extends in the fitting direction. When the engagement protrusion is engaged with the engagement groove, the engagement protrusion is deformed and the movable lid is displaced.

  In still another wire-to-board connector of the present invention, the exposed portion is a protrusion, and the exposed opening is a gap between the top plate portion and the movable lid portion of the first housing.

  In still another wire-to-board connector of the present invention, the color of at least the exposed portion of the second housing is different from the color of at least the top plate portion and / or the movable lid portion of the first housing.

  In still another wire-to-board connector of the present invention, the degree of exposure of the exposed portion is greater after completion of fitting than before completion.

  In still another wire-to-board connector of the present invention, the degree of exposure of the exposed portion is smaller after completion of fitting than before completion.

  According to the present invention, the wire-to-board connector is mounted on the surface of the substrate by moving the first connector connected to the terminal end of the wire in a direction perpendicular to the substrate from above in a posture in which the wire is parallel to the substrate. The two connectors are fitted, and when the fitting is completed, a part of the housing of the first connector is displaced to change the degree of exposure as viewed from above the second connector on the upper surface. As a result, the completion of the fitting can be easily and reliably visually recognized from above the board, the fitting operation is easy, the space required for the fitting operation can be reduced, the structure is simplified, and the size is reduced. Further, the height can be reduced and the reliability can be improved.

It is a perspective view which shows the state before the fitting of the wire-to-board connector in the 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a three-plane figure which shows the state before the fitting of the wire-to-board connector in the 1st Embodiment of this invention, (a) is a top view, (b) is a front view, (c) is a side view. . It is a sectional side view which shows the state before the fitting of the wire-to-board connector in the 1st Embodiment of this invention, Comprising: (a) is AA arrow sectional drawing of Fig.2 (a), (b) FIG. 3 is a cross-sectional view taken along the line BB in FIG. It is a perspective view which shows the state which the wire-to-board connector in the 1st Embodiment of this invention fitted. BRIEF DESCRIPTION OF THE DRAWINGS It is a three-plane figure which shows the state which the wire-to-board connector in the 1st Embodiment of this invention fitted, Comprising: (a) is a top view, (b) is a front view, (c) is a side view. It is a sectional side view which shows the state which the electric wire to board connector in the 1st Embodiment of this invention fitted, Comprising: (a) is CC sectional view taken on the line of FIG. 5 (a), (b) is It is DD sectional view taken on the line of Fig.5 (a). It is a perspective view which shows the state before the fitting of the wire-to-board connector in the 2nd Embodiment of this invention. It is a three-plane figure which shows the state before the fitting of the wire-to-board connector in the 2nd Embodiment of this invention, (a) is a top view, (b) is a front view, (c) is a side view. . It is a sectional side view which shows the state before the fitting of the wire-to-board connector in the 2nd Embodiment of this invention, Comprising: (a) is EE arrow sectional drawing of Fig.8 (a), (b) FIG. 9 is a cross-sectional view taken along the line FF in FIG. It is a perspective view which shows the state which the wire-to-board connector in the 2nd Embodiment of this invention fitted. It is a three-plane figure which shows the state which the electric wire to board connector in the 2nd Embodiment of this invention fitted, Comprising: (a) is a top view, (b) is a front view, (c) is a side view. It is a sectional side view which shows the state which the wire-to-board connector in the 2nd Embodiment of this invention fitted, Comprising: (a) is GG arrow sectional drawing of Fig.11 (a), (b) is It is HH arrow sectional drawing of Fig.11 (a). It is a sectional side view which shows the operation | movement of a series of fitting of the conventional wire-to-board connector.

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

  FIG. 1 is a perspective view showing a state before the wire-to-board connector is fitted in the first embodiment of the present invention, and FIG. 2 is a state before the wire-to-board connector is fitted in the first embodiment of the present invention. FIG. 3 is a side sectional view showing a state before the wire-to-board connector is fitted in the first embodiment of the present invention. 2, (a) is a top view, (b) is a front view, (c) is a side view, and in FIG. 3, (a) is a cross-sectional view taken along the line AA in FIG. 2 (a). (B) is BB arrow sectional drawing of Fig.2 (a).

  In the figure, reference numeral 101 denotes a board connector as a second connector in the wire-to-board connector of the present embodiment, which is mounted on a circuit board as a board (not shown), and preferably has a small height dimension. This is a back connector. Reference numeral 1 denotes a wire connector as a first connector in the wire-to-board connector of the present embodiment, which is connected to the end of a cable including a plurality of wires 91 and electrically connects the cable to the substrate connector 101. Preferably, it is a low-profile connector similar to the board connector 101 and is vertically fitted to the board connector 101. That is, the wire-to-board connector of the present embodiment is preferably a low profile vertical fitting connector, and is of a cable horizontal extension type in which the electric wire 91 is drawn out in parallel with the circuit board.

  In the example shown in the figure, the number of the electric wires 91 is five, but the number of the electric wires 91 can be arbitrarily changed, for example, one. Moreover, in this Embodiment, although the electric wire connector 1 is for connecting the cable provided with the cross-sectional electric wire 91, a flexible flat cable (FFC: Flexible Flat Cable), a flexible circuit board (FPC: Flexible Printed) It may be for connecting a flat flexible cable such as Circuit).

  Further, in the present embodiment, 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 connector 101 and the wire connector 1 are absolute. It is not relative, but is relative and suitable when the board connector 101 and the wire connector 1 are in the posture shown in the figure, but when the posture of the board connector 101 and the wire connector 1 is changed, the posture is changed. It should be interpreted according to changes.

  Here, the board connector 101 is a receptacle connector, which is integrally formed of an insulating material such as a synthetic resin, and is a board side housing as a second housing that fits with the electric wire side housing 11 of the electric wire connector 1. 111, a board-side terminal 161 as a metal second terminal loaded in the board-side housing 111, and a metal mounting auxiliary metal fitting 181 similarly loaded in the board-side housing 111.

  In the example shown in the figure, there are five board-side terminals 161, but the number of board-side terminals 161 can be arbitrarily changed according to the number of wires 91. The board connector 101 has a generally flat rectangular parallelepiped shape, and its lower surface (the lower surface in FIGS. 2B and 2C) faces the surface of the circuit board. It is attached to the circuit board, and the electric wire connector 1 is inserted and fitted from above.

  As shown in the drawing, the board-side housing 111 is composed of a substantially rectangular (く) flat plate-like bottom wall portion 112 and a front end side of the bottom wall portion 112 (the lower left side in FIG. The main body 115 extends along the edge of the connector 1 (corresponding to the front end side of the connector 1), and the side wall 117 extends from the bottom wall 112 and extends along both side edges of the bottom wall 112. Reference numeral 113 denotes a fitting space defined on both sides by the side wall portion 117 above the bottom wall portion 112, and is a space into which the wire connector 1 is inserted and fitted.

  The main body 115 has a terminal support portion extending upward at a position on the rear end side (corresponding to the rear end side of the wire connector 1 to be fitted in the upper right side in FIG. 1) from the front end surface. 114 is formed. The terminal support 114 is formed with a plurality of slit-like terminal receiving grooves 114 a that penetrate from the front surface to the rear surface and extend from the upper surface to the vicinity of the upper surface of the main body 115. And the contact part of the said board | substrate side terminal 161 is exposed from the side wall of the terminal accommodating groove 114a, contacts with the electric wire side terminal 61 of the electric wire connector 1 accommodated in the terminal accommodating groove 114a, and is conducted. Further, the solder tail portion 162 of the board-side terminal 161 has its tip extending from the lower end of the tip of the main body 115 in the tip direction, such as signal lines, contact pads, terminals, etc. formed on the circuit board, that is, the counterpart side It is electrically connected to the terminal member by soldering or the like.

  Further, the board-side housing 111 has a locked member 116 formed so as to protrude from the front end surface of the main body 115, and a metal fitting receiving groove 117 a formed in the side wall 117. When the wire connector 1 is fitted to the board connector 101, the locked member 116 is engaged with the lock member 16 of the wire connector 1 to lock the board connector 101 and the wire connector 1 fitted. . Further, the mounting auxiliary metal fitting 181 is received in the metal fitting receiving groove 117a. Then, the connection portion 183 formed at the lower end of the auxiliary mounting bracket 181 is fixed to a connector fixing portion such as a solder pad formed on the circuit board by soldering or the like. Thereby, the board connector 101 is firmly fixed to the circuit board.

  Further, the first engagement groove 121 and the second engagement groove 122 as engagement grooves extending in a fitting direction, that is, a direction substantially perpendicular to the bottom wall portion 112 are formed on the inner surface of the side wall portion 117. Is formed. When the electric wire connector 1 is fitted to the board connector 101, the first engaging convex portion 21 and the second engaging convex portion 22 of the electric wire connector 1 are the first engaging groove 121 and the second engaging groove 122, respectively. Enter and engage. The first engagement groove 121 is formed on the front end side of the side wall portion 117, and the second engagement groove 122 wider than the first engagement groove 121 is formed on the rear end side of the side wall portion 117.

  An exposed convex portion 123 as a projecting portion projecting upward is formed at a portion corresponding to the front side wall of the second engagement groove 122 of the side wall portion 117. The exposed convex portion 123 functions as an exposure degree changing portion, and is an exposed portion where the degree of exposure viewed from above changes before and after the fitting of the wire connector 1 is completed. As shown in the figure, it is desirable that the exposed convex portion 123 protrudes upward from the upper surface of the side wall portion 117, but it may be formed so as not to protrude upward from the upper surface of the side wall portion 117. Good. In the example shown in the figure, the exposed convex portion 123 is formed adjacent to the second engagement groove 122, but is not necessarily adjacent to the second engagement groove 122.

  On the other hand, the electric wire connector 1 is a plug connector, which is integrally formed of an insulating material such as a synthetic resin, and has an electric wire side housing 11 as a first housing that fits with the board side housing 111 of the board connector 101. , And a wire side terminal 61 as a metal first terminal loaded in the wire side housing 11. Each electric wire side terminal 61 is connected to the terminal end of each electric wire 91 so as to be electrically connected to a conductive wire as a core wire of each electric wire 91, and inside the terminal accommodating recess 13 formed in the electric wire side housing 11. It is housed and held.

  The electric wire connector 1 has a substantially flat rectangular parallelepiped shape, and is inserted into and fitted into the board connector 101 from above in such a posture that its lower surface faces the upper surface of the board connector 101. That is, it is vertically fitted to the board connector 101.

  As shown in the drawing, the electric wire side housing 11 includes a substantially rectangular flat plate-shaped top plate portion 12 and a rectangular parallelepiped main body portion 14 connected to the lower surface of the top plate portion 12. The distal end side (lower left side in FIG. 1) of the main body portion 14 is a distal end wall portion 15 that extends parallel to the edge of the distal end side of the top plate portion 12 and is perpendicular to the top plate portion 12. Both sides of the main body portion 14 are side wall portions 17 that extend parallel to both side edges of the top plate portion 12 and are perpendicular to the top plate portion 12. Further, the terminal accommodating recess 13 is formed in the main body 14 so as to extend in the front-rear direction at a position on the rear end side (upper right side in FIG. 1) from the front end wall portion 15.

  Further, a terminal accommodating opening 13 a communicating with the terminal accommodating recess 13 is formed at a position near the distal end wall portion 15 on the lower surface of the main body portion 14, and terminal support is provided when the wire connector 1 is fitted to the board connector 101. The part 114 enters the terminal accommodating opening 13a. And the front-end | tip part of each electric wire side terminal 61 is arrange | positioned in the said terminal accommodation opening 13a, and if the said terminal support part 114 approachs in the terminal accommodation opening 13a, each terminal accommodation groove | channel formed in the terminal support part 114 will be shown. It enters into 114 a and comes into contact with the contact portion of the board-side terminal 161.

  Further, on the outer side surface of the side wall portion 17, a first engagement convex portion 21 and a second engagement convex portion 22 are formed as engagement convex portions protruding outward from the outer surface. The first engaging convex portion 21 and the second engaging convex portion 22 are provided in the first engaging groove 121 and the second engaging groove 122, respectively, when the electric wire connector 1 is fitted to the board connector 101. Enter and engage.

  The first engaging convex portion 21 extends straight from the tip of the top plate portion 12 in the fitting direction, that is, substantially vertically downward with respect to the top plate portion 12, and the outer surface of the tip of the side wall portion 17. It is the wall-shaped member formed so that it might protrude outward from.

  The second engaging convex portion 22 is a member disposed on the rear end side of the side wall portion 17, and a base portion 22 a integrally connected to the outer surface of the lower end of the side wall portion 17, and the base portion 22 a. And a rod-shaped main body portion 22b extending upward. Although the lower end of the main body portion 22b is connected and restrained to the base portion 22a, the other portion is separated from the side wall portion 17 and itself has flexibility, so that it can be elastically deformed. . Further, the main body portion 22b has a substantially square side shape bent at an intermediate portion, a portion from the lower end to the intermediate portion extends upward from the base portion 22a substantially vertically, and an upper portion from the intermediate portion It extends obliquely upward toward the tip. And the upper end as a free end of the said main-body part 22b is the movable cover part 22c, and is located near the front-end | tip rather than the said base 22a.

  A missing portion 12a is formed at the corners on both sides at the rear end of the top plate portion 12, and the movable lid portion 22c of the second engaging convex portion 22 is located in the missing portion 12a. In addition, although the height position of the upper end of the 2nd engagement convex part 22, ie, the upper end of the movable cover part 22c, is substantially equal to the height position of the upper surface of the top-plate part 12 in the example shown by a figure. The top plate 12 may protrude from the top surface, or may be retracted from the top surface 12. The gap between the front end of the missing portion 12a and the front end of the movable lid portion 22c is a variable opening 23 serving as an exposure opening that changes the degree of exposure of the exposed protrusion 123 as viewed from above. In other words, the variable opening 23 is an aperture that determines the degree of exposure of the exposed protrusion 123 as viewed from above, and the movable lid 22c changes the degree of opening of the variable opening 23 to change the exposed protrusion. 123 is an aperture stop for adjusting the degree of exposure.

  Further, a lock member 16 is integrally connected to the distal end wall portion 15 of the electric wire side housing 11 in the distal direction. Since the connecting portion 16c to the electric wire side housing 11 has flexibility, the lock member 16 can be elastically rotated around the connecting portion 16c. When the electric wire connector 1 is fitted to the board connector 101, the lock tip 16a formed at the lower end of the lock member 16 is engaged with the locked member 116 of the board connector 101, and the board is fitted. The connector 101 and the electric wire connector 1 are locked. Note that the upper end of the lock member 16 is an operation portion 16b positioned above the connection portion 16c, and is a portion that the operator operates with fingers when releasing the lock.

  Next, an operation for fitting the wire connector 1 to the board connector 101 will be described.

  4 is a perspective view showing a state in which the wire-to-board connector is fitted in the first embodiment of the present invention, and FIG. 5 is a state in which the wire-to-board connector is fitted in the first embodiment of the present invention. FIG. 6 is a side sectional view showing a state where the wire-to-board connector is fitted in the first embodiment of the present invention. 5, (a) is a top view, (b) is a front view, (c) is a side view, and in FIG. 6, (a) is a cross-sectional view taken along the line CC in FIG. 5 (a). (B) is DD sectional view taken on the line of Fig.5 (a).

  When the electric wire connector 1 is fitted to the board connector 101 mounted on the circuit board, the operator operates the electric wire connector 1 with fingers or the like, and the lower surface as the fitting surface of the main body portion 14 of the electric wire connector 1 is the board. More specifically, the connector 101 is positioned to face the bottom wall portion 112 so as to face the upper surface as the fitting surface. Further, the direction of the wire connector 1 is adjusted so that the tip of the wire connector 1 on which the lock member 16 is formed faces the same direction as the tip of the board connector 101 on which the locked member 116 is formed. Then, the electric wire connector 1 is moved vertically relative to the circuit board from above the circuit board, and the main body portion 14 of the electric wire connector 1 is inserted into the fitting space 113 of the board side housing 111 of the board connector 101 from above. Then, as shown in FIGS. 4 to 6, the wire connector 1 is fitted to the board connector 101.

  At this time, the terminal support portion 114 of the board connector 101 enters the terminal accommodating opening 13 a of the electric wire connector 1. And the front-end | tip part of each electric wire side terminal 61 arrange | positioned in this terminal accommodation opening 13a enters into each terminal accommodation groove | channel 114a formed in the terminal support part 114, and contacts with the contact part of the board | substrate side terminal 161 To do. Thereby, the conductive wire of the electric wire 91 is electrically connected to the mating terminal member formed on the circuit board via the electric wire side terminal 61 and the board side terminal 161.

  Further, as shown in FIG. 6B, the lock front end portion 16 a of the lock member 16 of the electric wire connector 1 engages with the member to be locked 116 of the board connector 101. This prevents the electric wire connector 1 from being detached from the board connector 101. Note that when locking, the operator does not need to operate the lock member 16 or the locked member 116, so the fitting operation between the wire connector 1 and the board connector 101 can be easily performed.

  Further, the first engagement convex portion 21 and the second engagement convex portion 22 of the electric wire connector 1 enter and engage with the first engagement groove 121 and the second engagement groove 122 of the board connector 101, respectively. . Thereby, the electric wire connector 1 is fitted to the board connector 101 in a state in which the electric wire connector 1 is accurately positioned with respect to the board connector 101. In other words, the operator only needs to engage the first engagement convex portion 21 and the second engagement convex portion 22 with the first engagement groove 121 and the second engagement groove 122 to position the electric wire connector 1 with respect to the board connector 101. Therefore, the fitting operation can be easily performed.

  Here, the exposed protrusion 123 of the board connector 101 enters the variable opening 23 of the electric wire connector 1 from below and protrudes upward from the top plate 12. By the way, in the state before fitting with the board connector 101, the dimension in the front-rear direction of the variable opening 23 is smaller than the dimension in the front-rear direction of the exposed convex part 123, as shown in FIG. Yes. That is, since the variable opening 23 is narrowed by the movable lid 22c, as shown in FIG. 2A, the degree of exposure of the exposed convex portion 123 viewed from above is small. However, when the electric wire connector 1 is fitted to the board connector 101, the main body portion 22b of the second engaging convex portion 22 is pushed backward by engaging with the second engaging groove 122, and elastically deforms. Therefore, the movable lid 22c is displaced rearward, and the variable opening 23 is widened. As a result, after the fitting of the wire connector 1 and the board connector 101 is completed, as shown in FIG. 5A, the degree of exposure of the exposed convex portion 123 as viewed from above is higher than that before the completion of the fitting. growing. Therefore, the operator can accurately recognize that the fitting of the electric wire connector 1 and the board connector 101 has been completed based on the change in the degree of exposure of the exposed protrusion 123 only by looking from above.

  In addition, the said exposed convex part 123 does not necessarily need to protrude upwards rather than the top-plate part 12 in the state which the fitting of the electric wire connector 1 and the board | substrate connector 101 was completed, and it can visually recognize through the variable opening part 23 from upper direction. It is sufficient if the height is high enough.

  Further, when the fitting of the electric wire connector 1 and the board connector 101 is completed, as shown in FIG. 5A, half of the area of the board connector 101 (or the board side housing 111) in the state viewed from above. It is desirable that the range exceeding 1 is covered by the electric wire connector 1 (or the electric wire side housing 11). That is, the area of the exposed portion of the board connector 101 (or the board-side housing 111) is smaller than the area of the exposed portion of the wire connector 1 (or the wire-side housing 11) when viewed from above. It is desirable. This is because the exposed convex portion 123 as the exposure degree changing portion whose exposure degree changes before and after the fitting is completed belongs to the board connector 101 (or the board side housing 111), and the board connector 101 (or the board side housing 111). This is because if the overall exposure degree is smaller than the exposure degree of the electric wire connector 1 (or the electric wire side housing 11), the change in the exposure degree of the exposed convex portion 123 becomes more conspicuous.

  Further, it is desirable that the color of at least the exposed convex portion 123 of the board side housing 111 is different from the color of at least the top plate portion 12 and / or the movable lid portion 22c of the electric wire side housing 11. Thereby, the change of the exposure degree of the exposure convex part 123 becomes more conspicuous, and the operator can visually recognize the change of the exposure degree of the exposure convex part 123 easily. Note that the color of the exposed convex portion 123 may be different from or the same as the color of other portions of the substrate-side housing 111. When the color of the exposed convex part 123 is the same as the color of the other part of the board side housing 111, the color of the whole board side housing 111 is different from the color of at least the top plate part 12 of the wire side housing 11. To do. Note that the color of the exposed protrusion 123 is different from the color of the other part of the substrate-side housing 111, for example, by adopting a molding method called two-color molding or multicolor molding, and a plurality of types of molding materials. This can be achieved by molding the substrate-side housing 111 by the above. Similarly, the color of the top plate portion 12 and / or the movable lid portion 22c may be different from or the same as the color of other portions of the electric wire side housing 11.

  Further, it is further desirable that at least the color of the exposed convex portion 123 of the substrate side housing 111 and the color of at least the top plate portion 12 and / or the movable lid portion 22c of the electric wire side housing 11 have a complementary color relationship. For example, if the exposed convex portion 123 is red, the top plate portion 12 and / or the movable lid portion 22c is blue-green, and if the exposed convex portion 123 is purple, the top plate portion 12 and / or the movable lid portion 22c is yellow. Try to be green. Since the complementary color is a so-called opposite color, the change in the exposure degree of the exposed convex part 123 becomes more noticeable, and the operator can easily visually recognize the change in the exposure degree of the exposed convex part 123. .

  Moreover, the main-body part 22b of the 2nd engagement convex part 22 is pushed back by engaging with the 2nd engagement groove | channel 122 as mentioned above, and deform | transforms elastically. Specifically, the dimension in the front-rear direction from the rear end of the base 22a to the front end of the movable lid 22c is larger than the dimension in the front-rear direction from the inner wall on the rear end side to the inner wall on the front end side of the second engagement groove 122. For this reason, the movable lid portion 22c is pushed rearward, and the entire main body portion 22b is elastically displaced so as to swing around the base portion 22a. As a result, a repulsive force is generated in the main body portion 22b, and the distal end of the movable lid portion 22c is pressed against the inner wall on the distal end side of the second engagement groove 122, so that the second engagement convex portion 22 is in the second engagement groove 122. It becomes difficult to come off. That is, the engagement between the second engagement convex portion 22 and the second engagement groove 122 is strong.

  And since the 2nd engagement convex part 22 is formed in the position near the rear end of the electric wire side housing 11, similarly, the 2nd engagement groove 122 is formed in the position near the rear end of the board | substrate side housing 111. Even when the electric wire 91 is bent, the fitting between the electric wire side housing 11 and the substrate side housing 111 is not released. Since the lock member 16 formed at the distal end of the electric wire side housing 11 is engaged and locked with the locked member 116 formed at the distal end of the substrate side housing 111, the lock member 16 is inserted into the proximal end portion of the electric wire side housing 11. When the electric wire 91 is wound, a force is applied to the electric wire side housing 11 so that the electric wire side housing 11 rotates with its tip as a fulcrum. However, since the second engagement convex portion 22 and the second engagement groove 122 are firmly engaged at the position closest to the proximal end farthest from the distal end, the rotation of the electric wire side housing 11 is effectively performed. Can be prevented.

  Thus, in the present embodiment, the wire-to-board connector includes the wire connector 1 having the wire-side terminal 61 connected to the wire 91 and the wire-side housing 11 loaded with the wire-side terminal 61, and the wire side. A board-side terminal 161 that comes into contact with the terminal 61 and a board connector 101 that is loaded with the board-side terminal 161 and has a board-side housing 111 that fits into the electric wire-side housing 11 are mounted on the circuit board. The board-side housing 111 includes an exposed convex portion 123 that is visible from above the circuit board. The electric wire-side housing 11 has a variable opening 23 that exposes the exposed convex portion 123 and an opening degree of the variable opening 23. A movable lid portion 22c to be changed, and when the electric wire side housing 11 is relatively moved from above the circuit board and fitted to the board side housing 111, the movable lid portion 22c is displaced and viewed from above the circuit board. The degree of exposure of the exposed protrusion 123 changes before and after the fitting of the electric wire side housing 11 and the board side housing 111 is completed.

  As a result, the completion of the fitting can be easily and reliably visually recognized from above the circuit board, the fitting operation is easy, the space required for the fitting operation can be reduced, the structure is simplified, and the size is reduced. And reduction in height and reliability can be improved. And the fitting operation with the electric wire connector 1 and the board | substrate connector 101 can be performed easily.

  Particularly, in recent years, with the progress of miniaturization and high performance of electronic devices and the like, the mounting density on the substrate has increased, and a large number of members such as electronic components are placed on the substrate, and the periphery of the substrate connector 101 The space is extremely narrow. In such a situation, when the fitting operation between the wire connector 1 and the board connector 101 is performed, it is visually confirmed from the side to confirm the completion of the fitting because there is a member such as an electronic component around. It is impossible. In particular, as in the present embodiment, in the case of a low-profile connector, since it appears to be buried in a surrounding tall member, it is difficult to visually recognize it from an oblique direction. However, in this embodiment, since the change in the degree of exposure of the exposed convex portion 123 is visually recognized from directly above, it is possible to reliably recognize the completion of the fitting.

  The movable lid portion 22c is a free end of the second engaging convex portion 22 in which the base portion 22a is connected to the electric wire side housing 11, and the substrate side housing 111 is extended to the second engaging groove 122 extending in the fitting direction. When the second engagement convex portion 22 engages with the second engagement groove 122, the second engagement convex portion 22 is deformed and the movable lid portion 22c is displaced. Thereby, even if it is a case where the electric wire 91 is beaten, fitting with the electric wire side housing 11 and the board | substrate side housing 111 will not come off.

  Further, the exposed convex portion 123 is a protruding portion formed adjacent to the second engaging groove 122, and the variable opening 23 is a gap between the top plate portion 12 and the movable lid portion 22 c of the electric wire side housing 11. Thereby, the structure can be simplified and the size can be reduced.

  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. 7 is a perspective view showing a state before the wire-to-board connector is fitted in the second embodiment of the present invention, and FIG. 8 is a state before the wire-to-board connector is fitted in the second embodiment of the present invention. FIG. 9 is a side sectional view showing a state before the wire-to-board connector is fitted in the second embodiment of the present invention. 8A is a top view, FIG. 8B is a front view, FIG. 8C is a side view, and FIG. 9A is a cross-sectional view taken along the line E-E in FIG. (B) is a FF arrow sectional view of Drawing 8 (a).

  In the present embodiment, the exposed convex portion 123 that functions as an exposure degree changing portion and the exposure degree viewed from above changes before and after the fitting of the electric wire connector 1 and the board connector 101 is formed on the side wall portion 117. The second engagement groove 122 is formed in a portion corresponding to the rear side wall. In addition, it is desirable that the height of the upper end of the exposed convex portion 123 in the present embodiment is lower than the height position of the upper surface of the side wall portion 117, but it protrudes above the upper surface of the side wall portion 117. It may be formed. In the example shown in the figure, the exposed convex portion 123 is formed adjacent to the second engagement groove 122, but is not necessarily adjacent to the second engagement groove 122.

  Further, in the present embodiment, the movable lid portion 22c of the second engagement convex portion 22 has a substantially L-shaped side surface shape and includes an eaves portion 22d extending rearward. In addition, the height position of the upper end of the 2nd engagement convex part 22, ie, the upper end of the movable cover part 22c containing the collar part 22d, is substantially the same as the height position of the upper surface of the top-plate part 12 in the example shown by a figure. Although they are equal, they may protrude from the top surface of the top plate portion 12 or may be retracted from the top surface of the top plate portion 12.

  Further, in the present embodiment, the gap between the rear end of the lacking portion 12a of the top plate 12 and the rear end of the movable lid portion 22c, that is, the rear end of the flange portion 22d is an exposed protrusion as viewed from above. This is a variable opening 23 that changes the degree of exposure of the portion 123. Note that the rear end of the missing portion 12 a is located on an extension line of the rear end edge of the top plate portion 12. Similar to the first embodiment, the variable opening 23 is an aperture that determines the degree of exposure of the exposed protrusion 123 as viewed from above. Further, the movable lid portion 22c, particularly the flange portion 22d, functions as an aperture stop that adjusts the degree of exposure of the exposed convex portion 123.

  Since other points are the same as those in the first embodiment, description thereof is omitted.

  Next, an operation for fitting the electric wire connector 1 in the present embodiment to the board connector 101 will be described.

  FIG. 10 is a perspective view showing a state in which the wire-to-board connector in the second embodiment of the present invention is fitted, and FIG. 11 shows a state in which the wire-to-board connector in the second embodiment of the present invention is fitted. FIG. 12 is a side sectional view showing a state in which the wire-to-board connector is fitted in the second embodiment of the present invention. 11, (a) is a top view, (b) is a front view, (c) is a side view, and in FIG. 12, (a) is a sectional view taken along line GG in FIG. 11 (a). (B) is a HH arrow sectional view of Drawing 11 (a).

  In the same manner as in the first embodiment, the main body portion 14 of the electric wire connector 1 is inserted from above into the fitting space 113 of the board-side housing 111 of the board connector 101, and as shown in FIGS. The wire connector 1 is fitted to the board connector 101.

  At this time, as in the first embodiment, the second engagement protrusion 22 of the electric wire connector 1 enters and engages with the second engagement groove 122 of the board connector 101. As a result, the main body portion 22b of the second engaging convex portion 22 is pushed rearward and elastically deforms, so that the movable lid portion 22c is displaced rearward, and as shown in FIG. 22 d covers most of the variable opening 23. In the example shown in the figure, almost the entire range of the variable opening 23 is covered by the flange 22d, but only a part of the variable opening 23 may be covered by the flange 22d. Further, since the upper end of the exposed convex portion 123 of the board connector 101 is located below the top plate portion 12 of the electric wire connector 1, it does not interfere with the displacement of the movable lid portion 22c including the flange portion 22d.

  In the present embodiment, the dimension in the front-rear direction of the variable opening 23 in a state before the wire connector 1 and the board connector 101 are fitted is, as shown in FIG. It is equal to or larger than the dimension. That is, since the variable opening 23 is widened by the movable lid 22c, as shown in FIG. 8A, the degree of exposure of the exposed convex portion 123 as viewed from above is large. However, when the electric wire connector 1 is fitted to the board connector 101, the main body portion 22b of the second engaging convex portion 22 is pushed backward by engaging with the second engaging groove 122, and elastically deforms. Therefore, the movable lid portion 22c including the flange portion 22d is displaced rearward, and the variable opening 23 is narrowed. As a result, after the fitting of the wire connector 1 and the board connector 101 is completed, as shown in FIG. 11A, the degree of exposure of the exposed convex portion 123 viewed from above is higher than that before the completion of the fitting. Get smaller. Therefore, the operator can accurately recognize that the fitting of the electric wire connector 1 and the board connector 101 has been completed based on the change in the degree of exposure of the exposed protrusion 123 only by viewing from above.

  In the example shown in the figure, the degree to which the variable opening 23 is narrowed by the movable lid 22c is large, the degree of exposure of the exposed protrusion 123 becomes almost zero, and the exposed protrusion 123 becomes invisible from above. However, the degree of narrowing of the variable opening 23 may be reduced to ensure a certain degree of exposure of the exposed convex portion 123 so that a part of the exposed convex portion 123 can be visually recognized from above. Conversely, the movable lid portion 22c may be greatly displaced so that the rear end of the flange portion 22d protrudes rearward from the rear end of the variable opening 23.

  Thus, in this Embodiment, the exposure degree of the exposure convex part 123 becomes smaller after completion of fitting than before completion. Thereby, the operator can easily recognize the completion of fitting by visual recognition.

  Since the configuration, operation, and effects of other points are the same as those in the first embodiment, description thereof is omitted.

  The present invention is not limited to the above-described embodiment, and various modifications can be made based on the spirit of the present invention, and they are not excluded from the scope of the present invention.

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

DESCRIPTION OF SYMBOLS 1,801 Electric wire connector 11 Electric wire side housing 12 Top plate part 12a Lack | missing part 13 Terminal accommodation recessed part 13a Terminal accommodation opening 14, 22b, 115 Main part 15 End wall part 16 Lock member 16a Lock front end part 16b Operation part 16c, 183 Connection part 17, 117 Side wall portion 21 First engaging convex portion 22 Second engaging convex portion 22a Base portion 22c Movable lid portion 22d Hook portion 23 Variable opening 61 Electric wire side terminals 91, 891 Electric wires 101, 901 Substrate connector 111 Substrate side housing 112 Bottom wall portions 113 and 913 Fitting space 114 Terminal support portion 114a Terminal receiving groove 116 Locked member 117a Metal fitting receiving groove 121 First engaging groove 122 Second engaging groove 123 Exposed convex portion 161 Substrate side terminal 162 Solder tail portion 181 Auxiliary fittings 811 and 911 for mounting Housing 812 Elastic arm 816 Locking protrusion 9 Wall 994 holes of second stoppers 916 locking frame portion 917 notched portion 922 fitted display piece 922a front end 922b rear end portion 924 shaft pin 926 leaf spring 961 pin 991 circuit board 992 casing

Claims (6)

(A) a first connector having a first terminal connected to the electric wire, and a first housing loaded with the first terminal;
(B) a second terminal that comes into contact with the first terminal, and a second connector that is loaded on the substrate and has a second housing that is loaded with the second terminal and that fits into the first housing. A wire-to-board connector,
(C) the second housing includes an exposed portion visible from above the substrate;
(D) The first housing includes an exposed opening that can expose the exposed portion, and a movable lid that changes an opening degree of the exposed opening.
(E) When the first housing is relatively moved from above the substrate and fitted into the second housing, the movable lid portion is displaced, and the degree of exposure of the exposed portion viewed from above the substrate is as follows: The wire-to-board connector changes before and after the completion of the fitting of the first housing and the second housing. The movable lid portion is a free end of an engaging convex portion whose base is connected to the first housing,
The second housing includes an engaging groove extending in a fitting direction;
The wire-to-board connector according to claim 1, wherein when the engaging convex portion engages with the engaging groove, the engaging convex portion is deformed and the movable lid portion is displaced. The exposed portion is a protruding portion;
The wire-to-board connector according to claim 2, wherein the exposed opening is a gap between the top plate portion of the first housing and the movable lid portion. The wire-to-board connector according to claim 3, wherein the color of at least the exposed portion of the second housing is different from the color of at least the top plate portion and / or the movable lid portion of the first housing. The wire-to-board connector according to any one of claims 1 to 4, wherein the degree of exposure of the exposed portion is greater after completion of fitting than before completion. The wire-to-board connector according to any one of claims 1 to 4, wherein an exposure degree of the exposed portion becomes smaller after completion of fitting than before completion.

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