JP5741335B2 - Board connector - Google Patents

Description

  The present invention relates to a board connector.

  The board connector described in Patent Document 1 is mounted on the surface of a circuit board (hereinafter simply referred to as a board), and includes a resin connector housing and a metal fixing member attached to the connector housing. I have. A pair of accommodating portions capable of accommodating the fixing member are formed on both side surfaces of the connector housing. The fixing member has an L-shaped plate shape as a whole, and includes a housing attachment portion accommodated in the accommodation portion and a substrate attachment portion connected to the lower end of the housing attachment portion and connected to the substrate by soldering. The connector housing is fixed to the substrate via a fixing member.

JP 2009-117152 A

  By the way, in the above conventional board connector, when foreign matter interferes with the front end of the connector housing when the solder attached to the board mounting portion of the fixing member has not yet hardened, the connector housing in the interference direction. Sometimes collapsed. As a result, the connector housing may be lifted off the board and not properly fixed to the board.

  The present invention has been completed based on the above-described circumstances, and when the fixing member is connected to the circuit board by soldering, the connector housing is preferably fixed to the circuit board. Objective.

As means for achieving the above object, the invention of claim 1 includes a resin connector housing having a housing portion, and a housing mounting portion that is housed in the housing portion and is attached to the connector housing. A metal fixing member having a board mounting portion disposed along the surface of the circuit board and connected to the circuit board by soldering, and the connector is connected to the circuit board by connecting the fixing member to the circuit board. A connector for a board in which a housing is fixed to the circuit board via the fixing member, wherein the housing mounting portion is a locking portion locked to the housing portion, and the connector housing is more than the locking portion. is disposed at the center of gravity position side of the entire board connector on the side, have a and suppressing weight portion collapsing of the connector housing, the connector housing A hood portion that opens to the front; a pair of protective walls projecting backward from both sides in the width direction of the hood portion; and the housing portion is formed on the outer side of the two protective walls; A terminal fitting that protrudes rearward from the hood portion and is solder-connected to the circuit board is disposed, and the hood portion is arranged to protrude forward from the front edge of the circuit board. Has characteristics.

According to a second aspect of the present invention, in the first aspect of the present invention, the weight portion is formed by being bent toward an end of the circuit board from an end of the locking portion opposite to the circuit board. However, it has characteristics.

According to a third aspect of the present invention, in the one according to the first or second aspect, the weight portion extends from an end edge of the locking portion opposite to the open end side of the hood portion to the open end side of the hood portion. It is characterized by the fact that it is bent toward the surface.

<Invention of Claim 1>
Since the housing mounting portion of the fixing member has the weight portion, the connector housing is prevented from falling down, so that the connector housing is prevented from floating from the circuit board. As a result, the connector housing is well fixed to the circuit board. In this case, the weight portion is disposed closer to the connector housing than the locking portion of the fixing member, and is positioned near the center of gravity of the connector housing. Therefore, the bias of the center of gravity is prevented as a whole, and the center of gravity stability is excellent.

Further, since the hood portion is disposed so as to protrude forward from the front edge of the circuit board, the hood portion may fall from the circuit board when foreign matter interferes. However, according to the present invention, the weight portion prevents the hood portion from falling from the circuit board.

<Invention of Claim 2 >
Since the weight part is formed by being bent toward the circuit board side from the edge opposite to the circuit board side in the locking part, the center of gravity is positioned toward the circuit board side, and the center of gravity stability is excellent. .

<Invention of Claim 3 >
Since the weight part is formed by bending from the edge (rear edge) opposite the opening end side (front end side) of the hood part in the locking part toward the opening end side of the hood part, the center of gravity is the hood part. It will be located in the opposite side to the opening end side of this, and it will be prevented more favorably that the opening end side of a hood part will fall down.

It is a side view of the connector for substrates concerning Embodiment 1 of the present invention. It is a front view of the connector for boards. It is a top view of the connector for boards. It is a rear view of the board connector. FIG. 5 is a sectional view taken along line XX in FIG. 4. It is the YY sectional view taken on the line of FIG. It is a side view of a connector housing. It is a top view of a connector housing. It is a side view of a fixing member. It is a front view of a fixing member. It is a side view of the fixing member seen from the connector housing side. It is a side view of the connector for substrates concerning Embodiment 2 of the present invention. It is a top view of the connector for boards. It is ZZ sectional drawing of FIG. It is a rear view of a fixing member. It is a side view of the fixing member seen from the connector housing side.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. The board connector 10 according to the first embodiment is mounted on the surface of a circuit board (hereinafter simply referred to as a board 90), and includes a connector housing 20, a fixing member 60, and a terminal fitting 50. .

  The connector housing 20 is made of a synthetic resin, and has a substantially rectangular tube-shaped hood portion 21 that opens forward as shown in FIGS. 1 and 2. The hood portion 21 is configured to extend long in the width direction, and a plurality of terminal fittings 50 are mounted on the back wall 22 as shown in FIG.

  A pair of protective walls 23 are formed at the rear end portions of both ends in the width direction of the hood portion 21 so as to protrude rearward. As shown in FIG. 8, the two protective walls 23 are each in the form of a plate having a predetermined thickness, and protect the terminal fittings 50 drawn from the rear surface of the rear wall 22 of the hood portion 21 from both sides in the width direction. I will. As shown in FIG. 2, the outer portions of both protective walls 23 have a lower height than the inner portion 25 that is the same height as the hood portion 21, and projecting portions 24 that protrude outward from the lower portions of the outer side surfaces of the hood portion 21. It is configured as. As shown in FIG. 3, the protrusion 24 is formed with an accommodating portion 26 that can accommodate a housing attachment portion 61 (described later) of the fixing member 60.

  As shown in FIGS. 7 and 8, the accommodating portion 26 opens on the outer surface of the protrusion 24 and extends in the height direction (vertical direction) and opens on both upper and lower surfaces of the protrusion 24. . Specifically, the accommodating portion 26 includes a locking portion accommodating groove 28 that opens with a large front-rear width at a portion outside the step 27 formed in the height direction of the protrusion 24, and the step 27. And a weight portion receiving groove 29 that opens with a small front-rear width. The locking portion receiving groove 28 can receive a locking portion 64 (described later) of the fixing member 60, and the weight portion receiving groove 29 can store a weight portion 65 (described later) of the fixing member 60. Has been.

  The groove bottom surface of the latching portion accommodation groove 28 is a flat surface 31 along the height direction, and a weight portion accommodation groove 29 is formed at an approximately central portion in the front-rear direction. In addition, a pair of recesses 32 are formed in the upper end portions of the groove side surfaces at both the front and rear ends of the locking portion receiving groove 28. Both concave portions 32 are arranged along the flat surface 31 and are widened in a stepped shape so as to open on the upper surface of the protrusion 24. As shown in FIG. 5, both concave portions 32 can be fitted with first locking projections 66 (described later) of the locking portions 64 from above.

  A pair of guide portions 33 is formed on the front and rear upper end edges of the recess 32 so as to expand upward in a tapered shape. A pair of guide portions 33 is also formed at the front and rear upper edges of the weight portion receiving groove 29. The locking portion 64 and the weight portion 65 are smoothly guided into the locking portion receiving groove 28 and the weight portion receiving groove 29 along the respective guide portions 33.

  As shown in FIG. 6, the front-rear width of the weight portion receiving groove 29 is substantially the same over the entire length in the height direction except for the guide portion 33. Further, the front-rear width of the weight portion receiving groove 29 is substantially equal to the front-rear width of the weight portion 65 except for the guide portion 33, and the front-rear width of the locking portion receiving groove 28 is excluded, except for the guide portion 33 and the concave portion 32. The front-rear width of the locking portion 64 is substantially equal.

  The terminal fitting 50 is made of metal and has a substantially square pin shape. As shown in FIG. 2, a plurality of terminal fittings 50 are arranged in the rear wall 22 of the hood portion 21 so as to be aligned in the height direction and the width direction. Specifically, the terminal fitting 50 includes a first extending portion 51 extending in the front-rear direction, and a second extending portion 52 (see FIG. 4) that is bent substantially perpendicularly from the rear end of the first extending portion 51 and extends downward. And a third extending portion 53 (see FIG. 3) that is bent substantially perpendicularly from the lower end of the second extending portion 52 and extends rearward. The first extending portion 51 is configured to protrude into the hood portion 21 and penetrate the back wall 22 and be pulled out to the outside rear of the hood portion 21. As shown in FIGS. 3 and 4, the third extending portion 53 is disposed along the surface of the substrate 90 and connected to a conductive path (not shown) formed on the surface of the substrate 90 by soldering. The portion of the first extending portion 51 exposed to the outside rear of the hood portion 21, the second extending portion 52, and the third extending portion 53 are disposed between the two protective walls 23, and both the protective walls 23 in a side view. Concealed by.

  The fixing member 60 is made of metal and has a plate shape as a whole. The fixing member 60 is arranged in a pair at a position corresponding to both the housing portions 26 of the connector housing 20. Specifically, as shown in FIGS. 9 to 11, the fixing member 60 is connected to the outer side (the fixing member 60 is accommodated in the accommodating portion 26) and is connected to the substantially rectangular housing attaching portion 61 and the lower end of the housing attaching portion 61. In this state, a bent portion 63 (see FIG. 10) that bends in a curved shape toward the side away from the connector housing 20, and a board mounting portion 62 that protrudes outward from the lower end of the bent portion 63. As shown in FIG. 1, the board mounting portion 62 is disposed along the surface of the board 90 and connected to the surface of the board 90 by soldering.

  As shown in FIGS. 9 to 11, the housing mounting portion 61 includes a flat plate-like locking portion 64 along the height direction, and a weight portion 65 integrally connected to the upper end of the locking portion 64. A pair of first and second locking projections 66 and 67 are formed on both front and rear ends of the upper end of the locking portion 64 so as to protrude in both the front and rear directions. The first locking protrusion 66 has a substantially rectangular shape, and the second locking protrusion 67 has a substantially trapezoidal shape. The first locking protrusion 66 is disposed above the second locking protrusion 67.

  As shown in FIG. 10, the weight portion 65 has a belt-like shape, and as shown in FIG. 10, the weight portion 65 once rises from the upper end of the locking portion 64 and then moves inside (positioned near the connector housing 20 in a state where the fixing member 60 is accommodated in the accommodating portion 26. The side is bent in a substantially U shape and extends downward. A pair of chamfered portions 68 are cut out at both end portions in the thickness direction at the lower end of the weight portion 65. The lower end of the weight portion 65 is tapered by a double-sided chamfer 68. The lower end of the weight portion 65 is located in the middle of the locking portion 64 in the height direction. Further, as shown in FIG. 11, the weight portion 65 is formed with a front and rear width smaller than that of the locking portion 64, and is disposed at a substantially central portion in the front-rear direction at the upper end of the locking portion 64. The front-rear width of the weight portion 65 is substantially the same over the entire length in the extending direction.

Next, the operation of the board connector 10 according to this embodiment will be described.
The housing mounting portions 61 of the fixing member 60 are attached to both the housing portions 26 of the connector housing 20. The housing mounting portion 61 is inserted into the housing portion 26 from above, and the locking portion 64 is inserted into the locking portion housing groove 28, and at the same time, the weight portion 65 is inserted into the weight portion housing groove 29. In the insertion process, both front and rear ends of the locking portion 64 slide on the groove side surface of the locking portion receiving groove 28, and both front and rear ends of the weight portion 65 slide on the groove side surface of the weight portion receiving groove 29. The mounting operation of the housing mounting groove 61 is guided.

  When the housing mounting portion 61 is attached to the housing portion 26 at a normal depth, the first locking protrusion 66 is fitted in the recessed portion 32 in a state of being locked, as shown in FIG. The protrusion 67 is engaged with the groove side surface of the engagement portion accommodating groove 28 in a state of being bitten. As a result, the housing mounting portion 61 is positioned in the housing portion 26 and is held out. Further, when the housing mounting portion 61 is attached to the accommodating portion 26 at a normal depth, as shown in FIG. 6, the front and rear ends of the weight portion 65 are arranged so as to be able to contact the groove side surface of the weight portion accommodating groove 29, The weight portion 65 is positioned. The center of gravity of the board connector 10 as a whole is located at the center in the width direction of the board connector 10 and behind the center in the front-rear direction when both the fixing members 60 and the terminal fittings 50 are mounted on the connector housing 20. The front and rear direction is substantially the same as that of the weight portion 65 and in the vicinity of the weight portion 65.

  Subsequently, the board connector 10 is placed at a predetermined position of the board 90. Then, the board attaching portions 62 of both the fixing members 60 and the third extending portions 53 of the terminal fittings 50 are placed on the solder paste application region on the surface of the substrate 90. At this time, the hood portion 21 is disposed so as to protrude forward from the front edge of the substrate 90. For this reason, when a foreign object interferes with the front end portion of the hood portion 21 from above, the connector housing 20 may fall forward and fall from the board 90. However, according to the first embodiment, the center of gravity of the board connector 10 is located on the board 90, and the center of gravity is stabilized by the weight of the weight part 65, so that the front end part of the hood part 21 falls from the board 90. Is prevented.

  Next, the board connector 10 placed on the board 90 is passed through a reflow furnace (not shown). As a result, the solder paste is melted and attached to the board attaching portion 62 of both the fixing members 60 and the third extending portion 53 of each terminal fitting 50. Then, the board connector 10 is taken out from the reflow furnace, and the solder is solidified, whereby the board attaching part 62 and the third extending part 53 are connected to the board 90. The connector housing 20 is fixed to the surface of the substrate 90 via the substrate attachment portion 62. Thereafter, the substrate 90 is inserted into a case (not shown), and the periphery of the substrate 90 is resin-sealed by a potting material introduced into the case. At this time, the hood portion 21 is disposed so as to protrude outward from the opening of the case, and in this state, is fitted to a mating connector housing (not shown).

  As described above, according to the first embodiment, since the housing mounting portion 61 of the fixing member 60 includes the weight portion 65, the connector housing 20 is prevented from falling down. 20 is prevented from floating from the substrate 90. As a result, the connector housing 20 is fixed to the board 90 satisfactorily. In this case, since the weight portion 65 is disposed closer to the connector housing 20 than the locking portion 64 of the fixing member 60 and is located near the center of gravity of the connector housing 20, the center of gravity of the connector as a whole can be prevented and the center of gravity can be stabilized. Excellent in properties.

  In particular, since the hood portion 21 is disposed so as to protrude outward from the front end edge of the substrate 90, the connector housing 20 may fall from the substrate 90 when foreign matter interferes with the front end portion of the hood portion 21. Accordingly, the weight portion 65 can favorably prevent the connector housing 20 from falling from the board 90.

  In addition, since the weight portion 65 is formed by bending downward from the upper end edge, which is the edge opposite to the substrate 90 side of the locking portion 64, toward the substrate 90 side, the center of gravity is directed toward the substrate 90 side. It will be located and is more excellent in stability of the center of gravity.

<Embodiment 2>
A second embodiment of the present invention will be described with reference to FIGS. In the board connector 10 </ b> A according to the second embodiment, the shape of the housing portion 26 </ b> A and the weight portion 65 </ b> A is different from that of the first embodiment, but other forms are the same as those of the first embodiment. Therefore, in Embodiment 2, the same code | symbol is attached | subjected to the structure similar to Embodiment 1, and the overlapping description is abbreviate | omitted.

  As shown in FIGS. 12 to 14, protrusions 24 </ b> A are formed on the outer portions of both protective walls 23 </ b> A. Similarly to the first embodiment, the projecting portion 24 </ b> A is configured to project outward from the lower part of the outer side surfaces of the hood portion 21. The upper surface of the protrusion 24A is connected substantially horizontally at substantially the same height over the entire length of the protective wall 23A in the front-rear direction. A receiving surface 39 on which the weight portion 65A of the fixing member 60A can abut from above is formed on the upper surface of the protrusion 24A.

A step 27A is formed in the middle of the projecting portion 24A in the height direction, and a locking portion receiving groove 28 is formed in an outer portion with the step 27A as a boundary. Unlike the first embodiment, the weight portion receiving groove 29 is not formed in the inner portion of the protrusion 24A with the step 27A as a boundary, and the groove bottom surface (flat surface 31) of the locking portion receiving groove 28 The weight part accommodation groove 29 is not open. The form of the engaging portion receiving groove 28 is the same as that of the first embodiment. In the case of the second embodiment, the accommodating portion 26 </ b> A is configured by the locking portion accommodating groove 28 and the receiving surface 39.

  The weight portion 65A has a belt-like shape, and extends from the extension portion 69 that rises upward from the entire length of the upper end of the locking portion 64, and from the rear edge of the extension portion 69 (on the side opposite to the opening end side of the hood portion 21). And an extension portion 71 that is bent in a substantially U shape toward the inside (the side positioned closer to the connector housing 20 in a state where the fixing member 60A is housed in the housing portion 26A) and extends forward. The extension portion 69 is connected to the first locking protrusion 66 on the rear side continuous to the extension portion 71 without a step in the height direction. The front end of the extension portion 71 reaches substantially the same position as the front end of the locking portion 64. In addition, a pair of chamfered portions 68A are cut out at both end portions in the thickness direction of the front end of the extension portion 65, whereby the front end of the extension portion 71 is tapered.

  Here, when the fixing member 60 </ b> A is assembled, the locking portion 64 is inserted into the locking portion receiving groove 28 from above. Then, as in the first embodiment, the locking portion 64 is positioned in the locking portion receiving groove 28 by the locking action of the first and second locking projections 66 and 67 and is retained. On the other hand, the lower end of the extension portion 71 of the weight portion 65A is disposed so as to be able to come into contact with the receiving surface 39 of the protrusion 24A from above, thereby further restricting the insertion operation of the fixing member 60A. Thus, in a state where the fixing member 60A is attached to the accommodating portion 26A, the weight portion 65A has a portion extending rearward from the locking portion accommodating groove 28. For this reason, the center of gravity of the board connector 10A is located on the rear side of the board connector 10A (the side opposite to the opening end side of the hood portion 21). As a result, the front end portion of the connector housing 20 (the open end portion of the hood portion 21) can be prevented better.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) The fixing member may have a configuration in which the weight portion of the first embodiment extends above the locking portion and the weight portion of the second embodiment extends behind the locking portion.
(2) The thickness of the bent portion can be reduced by the weight of the weight portion. By making the bent portion thinner, bending of the bent portion becomes easier.

DESCRIPTION OF SYMBOLS 10, 10A ... Board connector 20 ... Connector housing 21 ... Hood part 26, 26A ... Housing part 50 ... Terminal metal fitting 60, 60A ... Fixing member 61 ... Housing attachment part 62 ... Board attachment part 64 ... Locking part 65, 65A ... Weight part 90 ... Board (circuit board)

Claims (3)

A resin connector housing having a housing portion and a housing mounting portion housed in the housing portion and mounted on the connector housing, and disposed along the surface of the circuit board and connected to the circuit board by soldering A board-fixing connector, wherein the connector housing is fixed to the circuit board via the fixing member when the fixing member is connected to the circuit board. Because
The housing mounting portion is disposed on the center of gravity position of the entire board connector on the connector housing side of the locking portion, and is restrained from falling of the connector housing. A weight portion ,
The connector housing has a hood portion that opens to the front, a pair of protective walls project from the both sides in the width direction of the hood portion, and the housing portion is formed on the outer side of both protective walls. A terminal fitting protruding rearward from the hood portion and soldered to the circuit board is disposed between the protective walls, and the hood portion is disposed protruding forward from the front edge of the circuit board. A connector for a board characterized by the above. 2. The board connector according to claim 1 , wherein the weight part is formed by being bent toward the circuit board side from an edge of the locking part opposite to the circuit board side . 3. The weight portion is formed by bending from an end edge of the locking portion opposite to the opening end side of the hood portion toward the opening end side of the hood portion. The board connector described.

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