JP2015079714A - Substrate connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a substrate connector stably supported by a circuit board before resin sealed.SOLUTION: A terminal fitting 60 is extracted from the rear surface of a housing 20 of a substrate connector 10, and the extracted terminal fitting 60 is secured on a circuit board 90. The circuit board 90 is inserted into a case 50, and the rear part side of the housing 20, including the extraction part of the terminal fitting 60, is sealed together with the circuit board 90, by a resin 70 introduced into the case 50. The housing 20 includes a fall-down restriction member 80 for restricting the housing 20 from falling front relative to the circuit board 90, when inserted into a hole 92 provided on the circuit board 90, from the surface side to the rear surface side of the circuit board 90, and engaged at the edge part of the hole 92 of the circuit board 90 on the rear surface side.

Description

  The present invention relates to a board connector.

  The board connector disclosed in Patent Document 1 includes a housing in which terminal fittings are mounted, and a locking plate that is attached to the housing and is inserted from a front surface side to a back surface side of a through hole provided in the circuit board. And. The terminal fitting is pulled out from the rear surface of the housing, and the lead-out portion is inserted into the through hole of the circuit board and connected to the conductor portion of the circuit board by soldering. The locking plate is fitted to the side surface of the housing, and is fixed to the circuit board via solder filled in the through hole. At the same time, the housing is also fixed to the circuit board via the locking plate.

JP 2007-42626 A

  By the way, in this type of board connector, the circuit board is inserted into the case, and the rear side of the housing including the circuit board and the lead-out portion of the terminal fitting is resin-sealed by the resin introduced into the case. Things are known. According to such a configuration, the housing is integrally fixed to the circuit board via the resin, so that a strong fixing means such as a locking plate is not required after the resin sealing. On the other hand, before the resin is sealed, since the locking plate can move and tilt in the front-rear direction in the through hole until the solder connection, the board connector is not stably supported by the circuit board, and the housing is not in front. There is a risk of falling. If the housing is tilted forward, the terminal fitting may be lifted from the circuit board and not soldered to the circuit board.

  The present invention has been completed based on the above circumstances, and an object thereof is to provide a board connector that is stably supported on a circuit board before resin sealing.

  The present invention includes a housing to which a terminal fitting is attached, the terminal fitting drawn from the rear surface of the housing is connected to the circuit board, and in that state, the circuit board is inserted into the case, A connector for a board in which a rear side of the housing including the circuit board and a lead-out portion of the terminal fitting is resin-sealed by resin introduced into the housing, the housing being connected to a hole provided in the circuit board A fall regulation member that is inserted from the front side to the back side of the circuit board and is locked to the edge of the hole of the circuit board on the back side, thereby regulating the forward fall of the housing with respect to the circuit board. Features where it is attached.

  Because the fall regulation member is inserted into the hole of the circuit board from the front side to the back side and is locked to the edge of the hole of the circuit board on the back side, the forward fall of the housing with respect to the circuit board is regulated, The board connector is stably supported on the circuit board before resin sealing.

It is a rear view of the board | substrate connector of an Example. It is AA sectional drawing of FIG. It is a top view of the connector for boards. It is a side view of the connector for substrates. It is sectional drawing of the connector for substrates by which the rear part side of the housing was inserted in the case and resin-sealed.

Preferred embodiments of the present invention are shown below.
The fall restricting member is made of a metal plate separate from the housing, and is mounted on the rear side of the housing. If the fall restricting member has such a configuration, the center of gravity of the entire board connector can be decentered toward the rear, and the housing can be prevented from falling forward more reliably.

  The fall restricting member has a locking claw that is locked to a rear edge located at the rear of the edge of the hole of the circuit board. Such a locking claw is locked to the rear edge of the hole in the circuit board, so that the housing can be prevented from falling forward more reliably.

<Example>
An embodiment of the present invention will be described with reference to FIGS. The board connector 10 according to the embodiment is mounted on a printed circuit board (hereinafter, referred to as a circuit board 90), and includes a housing 20 made of synthetic resin, a metal terminal fitting 60, and a metal collapse. And a regulating member 80. The housing 20 can be fitted with a mating housing (not shown). In the following description, with respect to the front-rear direction, the side facing the mating housing at the start of fitting is defined as the front, and the vertical direction is based on each drawing except for FIG.

  As shown in FIG. 5, the housing 20 has a cylindrical hood portion 21 that opens forward. The hood portion 21 has an opening shape that is long in the width direction (left-right direction in FIG. 1). As shown in FIG. 1, the lower surface and the upper surface of the hood portion 21 are curved surfaces that are gently inclined in an arc shape from the central portion in the width direction toward both sides. The back wall 22 of the hood portion 21 is provided with a plurality of terminal mounting portions 23 to which the terminal fittings 60 are mounted. The terminal mounting portions 23 are arranged on the back wall 22 side by side in the width direction and the vertical direction.

  As shown in FIG. 5, the terminal fitting 60 has an elongated pin shape, penetrates the terminal mounting portion 23 and protrudes into the hood portion 21, and a lead-out portion 62 that protrudes outside the hood portion 21. have. The lead-out portion 62 is pulled out rearward from the rear surface of the back wall 22 and then bent downward, and further bent backward at the lower end portion thereof to place the board connecting portion 63 arranged along the surface of the circuit board 90. Have. As shown in FIG. 1, the lead-out portions 62 of the respective terminal fittings 60 are drawn from positions shifted in the width direction by the terminal mounting portions 23 arranged in the vertical direction so that mutual interference can be avoided.

  As shown in FIGS. 1 and 3, a pair of protective walls 24 are provided at both ends in the width direction of the rear end of the hood portion 21 so as to protrude rearward on both sides of the terminal portion 60 between the lead portions 62. ing. The lead-out portion 62 of each terminal fitting 60 is covered and protected from both sides by both protective walls 24. Further, a lock portion 25 is provided so as to protrude from the central portion in the width direction of the upper surface of the hood portion 21. When the housing 20 is properly fitted to the mating housing, the lock portion 25 engages with a lock receiving portion of the mating housing (not shown) so that both housings are held in the fitted state.

  Further, as shown in FIG. 3, on the upper surface of the hood portion 21, ridge portions 26 extending in the front-rear direction are provided on both sides in the width direction across the lock portion 25. As shown in FIG. 1, the protrusions 26 are also provided on both side surfaces of the hood portion 21, and are also provided in the center portion in the width direction of the lower surface of the hood portion 21.

  Now, as shown in FIGS. 1 and 4, the two protective walls 24 arranged on the rear side of the housing 20 protrude from the lower side to the side (the side opposite to the side where each terminal fitting 60 is located). A corner block-shaped mounting portion 28 is provided. As shown in FIG. 2, a mounting hole 27 through which the fall regulation member 80 can be mounted is provided in the mounting portion 28 of both protective walls 24 so as to penetrate in the vertical direction. The mounting hole 27 has a slit-like opening shape elongated in the front-rear direction. Further, a step surface 29 is provided along the front-rear direction in the middle of the front-rear edges of the mounting holes 27 of the mounting portions 28 of both protective walls 24. The mounting hole 27 has a shape in which the upper side opens larger than the lower side across the step surface 29. Moreover, as shown in FIG. 3, the width direction outer side of the upper end surface of the mounting portion 28 of both protective walls 24 (the side opposite to the side where each terminal fitting 60 is located, on both sides in the width direction across the mounting hole 27). Is provided with a recess 31. As shown in FIG. 4, the recess 31 is disposed one step lower than the front and rear regions sandwiching the recess 31 in the upper end surface of the mounting portion 28, and at the upper end of the opening of the mounting hole 27. It is arranged in communication.

  The fall restricting member 80 is made of a metal flat plate extending in the front-rear direction so as to be inserted into the mounting hole 27 of the housing 20. Specifically, as shown in FIG. 2, the fall regulation member 80 includes a rectangular plate-like main body 81 that is long in the front-rear direction, and a guide piece 82 that protrudes downward from the front side of the lower edge of the main body 81. And a locking piece 83 projecting downward from the rear side of the lower edge of the main body 81.

  As shown in FIG. 2, sharp protrusions 84 are provided on both front and rear edges of the main body 81 so as to protrude. Further, a stepped portion 85 is provided on the lower edge of the main body 81 between the front edge and the guide piece 82 and between the rear edge and the locking piece 83. ing. When the fall restricting member 80 is inserted into the mounting hole 27 of the mounting portion 28, both stepped portions 85 are abutted against both step surfaces 29 of the mounting hole 27, and further insertion operation of the fall restricting member 80 is restricted. In addition, the two retaining protrusions 84 engage the front and rear edges of the upper portion of the mounting hole 27 in a bite-like manner, so that the fall-down regulating member 80 is prevented from coming out of the mounting hole 27. As shown in FIG. 4, when the fall restricting member 80 is inserted into the mounting hole 27 at a normal depth, the upper end portion of the fall restricting member 80 is visible through the recess 31.

  As shown in FIG. 2, the locking piece 83 and the guide piece 82 are arranged side by side in the front-rear direction, and a portion from the front edge of the locking piece 83 to the rear edge of the guide piece 82 forms a U shape in side view. It is in form. When the fall restricting member 80 is inserted into the mounting hole 27 of the housing 20 at a normal depth, the respective leading ends of the locking piece 83 and the guide piece 82 come out of the mounting hole 27 and project downward from the housing 20. Is done. Then, when the rear side of the housing 20 is placed on the surface of the circuit board 90, as shown in FIG. 2, the respective tips of the locking piece 83 and the guide piece 82 arranged so as to protrude below the housing 20. The part is inserted into a hole 92 provided in the circuit board 90 at a time.

  As shown in FIG. 2, the protruding dimension of the locking piece 83 is larger than the protruding dimension of the guide piece 82, and the lower end of the locking piece 83 is positioned below the lower end of the guide piece 82. Further, the guide piece 82 does not have a portion that protrudes in any of the front and rear directions over the entire length direction (vertical direction), but the locking piece 83 is directed rearward at the lower end portion thereof. It has the latching claw 86 which protrudes. The locking claw 86 has a shape of a sharp protrusion, and its rear edge is a guide edge 87 that gradually rises toward the rear, and its upper edge is a locking edge 88 that is substantially along the front-rear direction.

Next, the operation of the board connector 10 of the embodiment will be described.
As shown in FIG. 4, the board connector 10 is placed on the surface of the circuit board 90. Then, the rear side of the housing 20 is supported in contact with the surface of the circuit board 90, while the portion of the housing 20 excluding the rear side is arranged to protrude forward from the front end of the circuit board 90. At this time, the rear edge of the protrusion 26 provided on the lower surface of the hood portion 21 of the housing 20 is disposed in contact with or close to the front edge 91 of the circuit board 90.

  In addition, the lower end portion of the fall restricting member 80 that is inserted in the mounting hole 27 of the mounting portion 28 in both the protective walls 24 of the housing 20 so as not to be detached is inserted into the hole 92 of the circuit board 90. In the fall restricting member 80, in the process of inserting into the hole 92, the guide edge 87 of the locking claw 86 is brought into sliding contact with the rear edge of the hole 92 of the circuit board 90, whereby the locking piece 83 is bent forward and deformed. When the guide piece 82 is slid and inserted into the front edge of the hole 92 of the circuit board 90, the entire tilting restriction member 80 is restricted from tilting in the hole 92. After that, as shown in FIG. 2, when the fall regulation member 80 is inserted into the hole 92 at a normal depth, the locking piece 83 is elastically restored and the locking edge 88 of the locking claw 86 is connected to the circuit board. It is elastically locked to the rear edge portion 94 of the hole 92 on the back side of the 90.

  Therefore, when an external force is applied to the housing 20 at this stage (a stage before resin sealing described later) that causes the front portion of the housing 20 to be displaced downward, the locking edge 88 of the locking claw 86 is moved to the circuit board. The rear end portion of the hole 92 on the rear surface side of the 90 abuts substantially along the front-rear direction, and further forward tilt of the housing 20 is restricted. As a result, the housing 20 is prevented from falling forward. Note that unillustrated solder is supplied to the surface of the circuit board 90 at a position corresponding to the board connecting portion 63 of each terminal fitting 60.

  Subsequently, the board connector 10 and the entire circuit board 90 are heated in a reflow furnace (not shown). Then, the solder supplied to the surface of the circuit board 90 is melted and adheres to the board connection portion 63 of each terminal fitting 60, and the board connection portion 63 is connected to the circuit on the surface of the circuit board 90 in a soldered state. The

  Next, as shown in FIG. 5, the rear side of the board connector 10 is inserted into the rectangular box-shaped case 50 together with the circuit board 90, and the case 50 is filled with a resin 70 such as silicon resin. As a result, the entire circuit board 90, the lead-out portions 62 of the terminal fittings 60, and the rear side of the housing 20 are covered with the resin 70. Thereafter, when the resin 70 is cured, the housing 20 is fixed to the circuit board 90 via the resin 70. At this time, the front portion side of the housing 20 including the protrusions 26 is disposed so as to protrude forward from the surface 71 of the resin 70 in the case 50, and the housing 20 can be fitted into the mating housing in the case 50. Retained.

  As described above, according to the embodiment, the fall restricting member 80 is inserted into the hole 92 of the circuit board 90 from the front surface side to the back surface side, and is locked to the edge of the hole 92 of the circuit board 90 on the back surface side. As a result, the forward tilt of the housing 20 with respect to the circuit board 90 is restricted, so that the board connector 10 is stably supported on the circuit board 90 before resin sealing.

  Further, since the fall regulation member 80 is made of a metal plate and is mounted on the rear side of the housing 20, the center of gravity of the board connector 10 as a whole is eccentrically positioned toward the rear, and the forward fall of the housing 20 is more reliably performed. Is prevented. Furthermore, since the fall restricting member 80 has a locking claw 86 that is locked to the rear edge portion 94 located at the rear of the edge portion of the hole 92 of the circuit board 90, the housing 20 is prevented from falling forward. It is prevented more reliably.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following aspects are also included in the technical scope of the present invention.
(1) The front side of the housing excluding the front surface (fitting surface) of the housing may be configured to be resin-sealed in the case.
(2) The soldering method may be by hand soldering instead of reflow soldering.
(3) The fall restricting member may be made of synthetic resin. In that case, the fall restricting member may be attached integrally with the housing.
(4) The upper edge of the locking claw may have an overhanging shape that is inclined upward toward the rear end.

DESCRIPTION OF SYMBOLS 10 ... Board | substrate connector 20 ... Housing 24 ... Protective wall 28 ... Mounting part 50 ... Case 70 ... Resin 80 ... Falling control member 83 ... Locking piece 86 ... Locking claw 90 ... Circuit board 92 ... Hole 94 ... Rear edge part

Claims (3)

Resin that includes a housing to which terminal fittings are mounted, the terminal fittings drawn from the rear surface of the housing are connected to a circuit board, and in that state, the circuit board is inserted into the case and introduced into the case A connector for a substrate in which a rear side of the housing including a lead portion of the terminal fitting is sealed together with the circuit board,
The housing is inserted from the front side of the circuit board to the back side with respect to the hole provided in the circuit board, and is locked to the edge of the hole of the circuit board on the back side, A board connector, comprising: a fall regulation member for regulating a forward fall of the housing relative to a circuit board.   The board connector according to claim 1, wherein the fall regulation member is made of a metal plate separate from the housing and is attached to a rear side of the housing.   The board according to claim 1, wherein the fall-controlling member has a locking claw that is locked to a rear edge located at the rear of the edge of the hole of the circuit board. Connector.

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