JP2010176923A - Board connector, and manufacturing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a novel structure of a card edge connector with which an external connection terminal can be formed on a printed-circuit board with a simple structure. <P>SOLUTION: A guide block 52 with slanted faces on both sides is prepared between each mutually pairing one of a plurality of pairs of terminal fittings 50a, 50b, prepared at a prescribed interval in width direction of a housing 22, and the pairing terminal fittings 50a, 50b are bent in mutually approaching direction toward their tip side along the both side slanted faces of the guide block 52, thereby, elastic contact portions 56a, 56b which contact the board side connecting part 20 formed at the connector attaching part 16 are provided in each terminal fitting 50a, 50b, and furthermore, a vertical wall 60 is formed between mutually adjoining terminal fittings 50a, 50b. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a board connector, a manufacturing method thereof, and a printed wiring board provided with the board connector, and more particularly, an improved structure of a board connector connected to an edge portion of the printed wiring board, and the like. The present invention relates to a method of advantageously manufacturing a board connector and a novel structure of a printed wiring board to which the board connector is connected.

  2. Description of the Related Art Conventionally, a board connector is known as one structure for providing external connection terminals on a printed wiring board. Among these board connectors, in the so-called card edge connector attached to the edge of the printed wiring board, a plurality of connection terminals are assembled to the resin housing, and the printed wiring board is connected to the edge of the printed wiring board. Thus, the connection terminal is mounted in a state of being sandwiched between a plurality of connection terminals from the front and back surfaces.

  By the way, in such a card edge connector, it is necessary to hold the connection terminal in a state in which the connection terminal is brought into contact with the connection portion formed on the end portion of the printed wiring board. Therefore, in the conventional card edge connector, a plurality of terminal fittings that are deformed in advance as a connection terminal and exhibit elasticity are assembled to the housing. Then, by using the elasticity of the plurality of terminal fittings, the plurality of terminal fittings are held in contact with the connecting portion of the printed wiring board by sandwiching the printed wiring board with the terminal fittings from both the front and back surfaces. (For example, refer to Patent Document 1 below).

  However, in such a conventional card edge connector, assembling so that the terminal fitting deformed in advance is pressed against both the front and back surfaces of the printed wiring board at the contact portion to the connection portion of the printed wiring board. The problem of being very troublesome was inherent. In addition, the work of deforming the plurality of terminal fittings in advance has to be performed, and there has been a problem that such a work is troublesome.

  In order to secure the pressure contact force of the contact portion of the terminal fitting against the connection portion of the printed wiring board while simplifying the deformation processing of the terminal fitting, an elastically deformable metal piece separate from the terminal fitting is used. There has also been proposed a structure in which a metal piece is pressed against a connection portion of a board to hold the contact portion of the terminal metal piece in contact with the connection portion of the board (for example, the following) Patent Document 2). However, when such a structure is adopted, a new piece of metal separate from the terminal fitting is required, which not only increases the number of parts, but also increases the number of steps for incorporating the piece of metal into the connector. Therefore, the proposed structure is not necessarily effective as a structure in which the external connection terminals are simply provided on the printed wiring board.

Japanese Patent Laid-Open No. 2002-63953 JP 2008-91106 A

  Here, the present invention is made in the background as described above, and the problem to be solved is to connect each contact portion of a plurality of pairs of terminal fittings to the board side of the printed wiring board. The structure that can be securely contacted and held by using the elasticity of each terminal fitting is simplified by easy work and simple processing of the terminal fitting without increasing the number of new parts. It is an object of the present invention to provide a board connector that can be advantageously realized. Another object of the present invention is to provide a method for advantageously manufacturing such a board connector and a novel structure of a printed wiring board provided with such a board connector.

Hereinafter, the aspect of this invention made | formed in order to solve such a subject is described. In addition, the component employ | adopted in each aspect as described below is employable by arbitrary combinations as much as possible.

The present invention relating to a board connector includes a housing having a board insertion part into which a connector attachment part formed on an edge of a printed wiring board is inserted, and is arranged so as to protrude on both the front and back surfaces of the connector attachment part. A plurality of pairs of terminal fittings are assembled to the housing, and the protruding portions of the terminal fittings have elastic contact portions that are in contact with the board-side connection portions formed on the connector mounting portions. The elastic contact portion of the terminal fitting is brought into contact with the board-side connection portion formed on both the front and back surfaces of the printed wiring board using the elasticity of the terminal fitting, In the board connector that is held in a general connection state, the plurality of pairs of terminal fittings are provided at predetermined intervals in the width direction of the housing, and the housing A guide block having inclined surfaces on both sides is provided between the pair of terminal fittings, and protrudes in the protruding direction of the terminal fitting, and extends along the both inclined surfaces of the guide block. The terminal fittings forming a pair are bent in a direction approaching each other toward the protruding tip side, and the closest part of the terminal fittings forming each pair is the elastic contact portion, A vertical wall is formed between the terminal fittings adjacent to each other in the width direction of the housing so as to protrude from the housing in the same direction as the guide block and separate the adjacent terminal fittings. To do.

The present invention relating to a method for manufacturing a board connector includes a housing having a board insertion portion into which a connector attachment portion formed at an edge of a printed wiring board is inserted, on both front and back surfaces of the connector attachment portion. A plurality of pairs of terminal fittings arranged in a protruding manner are assembled to the housing, and the protruding portions of the terminal fittings are elastically brought into contact with the board-side connecting portion formed in the connector mounting portion. An abutting portion is provided, and the elastic abutting portion of the terminal fitting abuts against the board-side connecting portion formed on both the front and back surfaces of the printed wiring board using the elasticity of the terminal fitting. The board connector manufacturing method is configured to be held in an electrically connected state, wherein the plurality of pairs of terminal fittings are assembled at predetermined intervals, and Between the terminal fittings that form a pair, a guide block having inclined surfaces on both sides protrudes in the projecting direction of the terminal fittings, and between the terminal fittings adjacent to each other, the guides from the housing. A housing preparatory step for forming the housing, and a plurality of pairs of terminals assembled to the housing, having a structure in which a vertical wall is formed projecting in the same projecting direction as the block and separating the adjacent terminal fittings By deforming the metal fittings along the inclined surfaces on both sides of the guide block between the vertical walls, the terminal metal fittings that make each pair are brought closer to each other toward the projecting tip side, and at the closest part, And a terminal fitting deformation processing step for forming an elastic contact portion.

Furthermore, in the present invention relating to the manufacturing method of the board connector, from both sides sandwiching the terminal fittings that form each pair, using a clamping type that clamps the terminal fittings that make each pair in a direction to approach each other, The pinching die is moved in the length direction of the terminal fitting while pinching the pair of terminal fittings, and the terminal fitting is bent and deformed along the inclined surfaces on both sides of the guide block. By carrying out, the aspect which implements the said terminal metal fitting deformation process is employ | adopted suitably.

Further, in the present invention relating to a method for manufacturing a connector for a board, the terminal fittings are respectively opposed to the terminal fittings forming the pairs in a state of being arranged between the protruding tip portions of the terminal fittings forming the pairs. After placing the sandwiching mold having two inclined surfaces extending so as to approach each other toward the base side of the terminal metal between the protruding tip portions of the terminal fittings that make each pair, using the clamping mold, The terminal fitting is deformed by bending the terminal fitting along the inclined surfaces on both sides of the guide block, and the terminal fitting deforming process is performed, and the terminals forming a pair along the two inclined surfaces of the sandwiching type It is preferable to adopt a mode in which the protruding tip end of the metal fitting is bent in a direction away from each other toward the tip end, and the widened portion is formed at the protruding tip of the terminal metal fitting which forms the respective pairs. .

Furthermore, in the present invention relating to the method of manufacturing a board connector, the base of the terminal fitting is pressed by pressing the base of the terminal fitting forming each pair from both sides sandwiching the terminal fitting forming each pair. The pressing die is pressed against the inclined surfaces on both sides of the guide block, and the pressing die is pressed against the inclined surfaces on both sides of the guide block. The terminal fitting is bent and deformed along the inclined surfaces on both sides of the guide block, thereby maintaining the shape of the base of the terminal fitting in a shape corresponding to the inclined surfaces on both sides of the guide block. The aspect which implements a metal fitting deformation process process is employ | adopted suitably.

The present invention relating to a printed wiring board provided with a board connector is a printed wiring board provided with a board connector according to the present invention, wherein (a) the board insertion portion of the housing in the board connector is at least In both side portions, it has a U-shaped peripheral wall portion, the U-shaped peripheral wall portion in each of the end engaging portions, a pair of plate-like wall portions respectively superimposed on the front and back surfaces of the printed wiring board, On the other hand, the printed wiring board is formed with a pair of cut slits, and the pair of slits are formed on the printed wiring board. The connector mounting portion is configured at a portion between the slits, and the end wall portions of the U-shaped peripheral wall portions are inserted into the slits, whereby the printed wiring board is Ujingu is equal to or adapted to be positioned.

Furthermore, in the present invention relating to a printed wiring board provided with a board connector, (c) the connector mounting portion of the printed wiring board is provided with locking holes at least at both sides in the width direction, On the opposing surfaces of the pair of plate-like wall portions in the end engaging portion of the housing, at least one of them is provided with a locking protrusion that locks into the locking hole of the printed wiring board. A mode in which the board connector is fixed to the printed wiring board by the locking of the locking projections to the locking holes is preferably employed. In addition to the above-described aspect, a locking hole is provided in an intermediate portion of the connector mounting portion of the printed wiring board, while a pair of plate-like wall portions are provided in an intermediate portion of the housing. At least one of them may be provided with a locking projection that locks into the locking hole of the printed wiring board.

  In the board connector having the structure according to the present invention, since the guide block having a specific structure is provided between the pair of terminal fittings, the terminal block is bent using the guide block well. Can be performed without requiring a special molding die. In addition, since a plurality of terminal fittings assembled to the connector housing by insert molding, rear assembly, or the like can be bent at the same time, very efficient processing is possible. In addition, when bending a plurality of terminal fittings, it is possible to guide each terminal in the bending direction along the inclined surface of the guide block by making good use of the vertical wall provided between adjacent terminals. It is possible to stably perform a desired bending process while suppressing defects in the bending process. Further, such a vertical wall can surely prevent mutual contact (short circuit) of adjacent terminal fittings even when mounted on the printed wiring board.

  Thus, in the board connector according to the present invention, each elastic contact portion of the plurality of pairs of terminal fittings is securely contacted and held on the board-side connection portion of the printed wiring board using the elasticity of each terminal fitting. The structure that can be made can be advantageously realized with a simple structure by an operation that does not require a troublesome labor and an easy processing for the terminal fitting without increasing the number of new parts. As a result, by using the board connector according to the present invention, it is possible to simply and reliably provide an external connection terminal with high contact reliability on the printed wiring board.

Further, even in the manufacturing method of the board connector according to the present invention and the printed wiring board provided with the board connector according to the present invention, the action / effect substantially the same as the action / effect that can be achieved in the board connector described above. However, it can be enjoyed very effectively.

  And in the printed wiring board provided with the board connector according to the present invention, the end wall portion is formed integrally with the plate-like wall portion in the end-engaging portion having the U-shaped peripheral wall portion. The strength and the strength of the end wall portion can both be ensured large without requiring thickening or material change. In particular, the improvement of the strength of the end wall portion can improve the positioning strength at the time of fitting into the slit. In addition, the pair of plate-like portions are also prevented from being deformed in the approaching / separating direction in the relative opposing direction, and the locking strength of the locking projections with respect to the locking holes of the wiring board is improved, and the connector fixing strength The reliability is improved. As a result, the fixing strength of the connector mounting portion with respect to the board connector can be effectively increased.

Plane | planar explanatory drawing which shows one Embodiment of the printed wiring board provided with the card edge connector according to this invention. II explanatory drawing in FIG. FIG. 2 is a perspective explanatory view showing a printed wiring board portion of a printed wiring board provided with the card edge connector shown in FIG. 1. FIG. 8 is a cross sectional view of a card edge connector included in a printed wiring board provided with the card edge connector shown in FIG. 1, corresponding to a section taken along line IV-IV in FIG. 7. V arrow explanatory drawing in FIG. VI-VI cross-section expansion explanatory drawing in FIG. VII-VII cross-sectional enlarged explanatory view in FIG. VIII-VIII cross-sectional enlarged explanatory drawing in FIG. IX-IX cross-sectional enlarged explanatory drawing in FIG. It is explanatory drawing which shows the example of a process implemented when manufacturing the card edge connector shown by FIGS. 4-7, (a) is the state figure which prepared the intermediate product of the card edge connector, (b) is The state figure which set the type | mold for bending-deforming the terminal metal fitting which makes each pair in the predetermined position, (c) is the state figure of the bending deformation process of a terminal metal fitting. It is explanatory drawing which shows the process example implemented following the process shown by FIG. 10, (a) is another state figure of the bending deformation process of a terminal metal fitting, (b) Further of the bending deformation process of a terminal metal fitting The other state figure, (c) is the state figure which formed the elastic contact part in the terminal metal fitting.

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

  First, in FIG.1 and FIG.2, the printed wiring board provided with the edge connector by which one Embodiment of the card edge connector as a board | substrate connector which has a structure according to this invention was mounted in the printed wiring board is the planar form. And in side view. Here, reference numeral 10 denotes a printed wiring board, and a card edge connector 12 is attached to an end edge portion of the printed wiring board 10. In the following, for the sake of convenience, the direction corresponding to the lower and upper directions in FIG. 1 will be referred to as the front-rear direction, and the direction corresponding to the left and right directions in FIG.

  More specifically, as shown in FIG. 3, slits 14 having notches or notches each having an elongated rectangular shape are respectively provided on both sides in the length direction of the end portion extending along one side of the printed wiring board 10. One by one. A portion sandwiched between the pair of slits 14 and 14 in such an end portion is a connector attachment portion 16 to which the card edge connector 12 is attached.

  The connector mounting portion 16 of the printed wiring board 10 is provided with one rectangular locking hole 18 penetrating the left and right side end portions and a substantially central portion in the length direction. Yes. In addition, in the portion between the formation portion of the central locking hole 18 in the connector mounting portion 16 and the respective formation portions of the locking holes 18, 18 on both the left and right sides, circuit board-side connections that are circuit conductors are provided on both front and back surfaces. A plurality of portions 20 are formed so as to extend at a predetermined length in the width direction of the connector mounting portion 16 with a predetermined interval in the left-right direction. Although illustration is omitted, the board-side connecting portion 20 is electrically connected to an electronic component or the like mounted on the printed wiring board 10 via a circuit conductor formed on the printed wiring board 10. It has become.

  On the other hand, the card edge connector 12 has a housing 22 made of a synthetic resin molded body, as shown in FIGS. The housing 22 includes a first housing portion 24a and a second housing portion 24b that have a rectangular shape, and the first housing portion 24a and the second housing portion 24b are formed by connecting the respective side wall portions to each other. While being opposed to each other, they are arranged side by side so as to open in the same direction. And the 1st housing | casing part 24a and the 2nd housing | casing part 24b which are arrange | positioned in that way are mutually connected integrally by the thick plate-shaped connection board part 26 in the mutually opposing side wall parts. ing.

  The first housing portion 24a and the second housing portion 24b that are integrally configured through the connecting plate portion 26 in this manner are opposite to the opening sides of the first and second housing portions 24a and 24b. On the bottom wall side (lower side in FIG. 4) on the side, the first board insertion part 28a, the second board insertion part 28b, and the third board insertion part 28c into which the connector mounting part 16 of the printed wiring board 10 is inserted, Each is integrally formed.

  As is apparent from FIGS. 1, 4, and 5, the first substrate insertion portion 28a formed integrally with the first housing portion 24a has a U-shaped peripheral wall portion 29a. The U-shaped peripheral wall portion 29a has an upper plate-like wall portion 30 and a lower plate-like wall portion 32 that face each other at a predetermined distance in the vertical direction, and right side edge portions of the upper and lower plate-like wall portions 30 and 32. Are integrally provided with an end wall portion 34 interconnecting the two.

The upper plate-like wall portion 30 of the U-shaped peripheral wall portion 29a is formed of a rectangular flat plate, and one notch 36 is provided at each end portion on both sides in the width direction so as to extend straight in the length direction. Yes. As a result, the intermediate portion in the width direction sandwiched between the two cuts 36 of the upper plate-shaped wall portion 30 has a front end portion (lower end portion in FIG. 1) that is a free end. Thus, the flexible piece portion 38 can be bent and deformed in the thickness direction.

Further, as shown in FIGS. 5 and 6, a locking projection 40 is integrally provided on the lower surface of the front end side portion of the flexible piece 38. The locking protrusion 40 has a substantially rectangular parallelepiped shape extending in the front-rear direction as a whole, and has a size that can be engaged with the locking hole 18 provided in the connector mounting portion 16 of the printed wiring board 10. . The front surface of the locking projection 40 is a sliding surface 42 made of an inclined surface inclined downward, and the rear surface is a locking surface 44 made of a vertical surface.

  On the other hand, as shown in FIGS. 4 to 6, the lower plate-like wall portion 32 is also a flat plate having a rectangular shape that is the same size as the upper plate-like wall portion 30. A plurality (three in this case) of protrusions 46 are integrally formed on the upper surface of the lower plate-like wall portion 32 so as to extend straight in the length direction at equal intervals in the width direction. Yes. Each of the protrusions 46 has a narrow width and a height that does not reach the lower surface of the locking projection 40 provided on the upper plate-like wall portion 32. Thereby, each protrusion 46 exhibits a function as a reinforcing rib of the lower plate-like wall portion 32. Further, as will be described later, when the connector mounting portion 16 of the printed wiring board 10 is inserted into the first substrate insertion portion 28a, the lower plate-like wall portion 32 contacts only at the front end surface of each protrusion 46, The sliding resistance of the lower plate-like wall portion 32 with respect to the connector mounting portion 16 is reduced.

  And, with respect to the right edge portion of the lower plate-like wall portion 32, the end wall portion 34 is erected so as to extend in the vertical direction, and the upper end of the end wall portion 34 is the upper plate-like wall portion. It is connected to the right end edge of 30. The end wall portion 34 has a thickness that can be inserted into the slit 14 provided in the connector mounting portion 16 of the printed wiring board 10. The lower plate-like wall portion 32, the upper plate-like wall portion 30, and the end wall portion 34 are integrally connected to each other at their rear end portions by a flat plate-like rear connection wall portion 48. .

  Accordingly, the end wall portion 34 increases the rigidity of the upper plate-like wall portion 30 and the lower plate-like wall portion 32 without impairing the flexibility of the flexible piece portion 38 of the upper plate-like wall portion 30. It plays a role as a reinforcement wall. In addition, the upper and lower plate-like wall portions 30 and 32 function as a reinforcing member for increasing the rigidity of the end wall portion 34. Further, the rear side plate-like wall portion 48 serves as a reinforcing member that increases the rigidity of the end wall portion 34 and the upper and lower plate-like wall portions 30 and 32. As a result, the overall strength of the U-shaped peripheral wall portion 29a and the first substrate insertion portion 28a is improved.

  The second substrate insertion portion 28b formed integrally with the second housing portion 24b also has a U-shaped peripheral wall portion 29b. The U-shaped peripheral wall portion 29b is the first substrate except that the left side edge portions of the upper plate-like wall portion 30 and the lower plate-like wall portion 32 are integrally connected by the end wall portion 34. The insertion portion 28a has the same structure. Thereby, the intensity | strength of the 2nd board | substrate insertion part 28b whole is raised. And since both the 1st and 2nd board | substrate insertion parts 28a and 28b have high intensity | strength like that, they are inserted in these 1st and 2nd board | substrate insertion parts 28a and 28b so that it may mention later. Thus, the fixing strength of the printed wiring board 10 fixed to the card edge connector 12 is effectively improved.

Further, as is apparent from FIGS. 4 and 5, the third board insertion portion 28 c formed integrally with the connecting plate portion 26 does not have the end wall portion 34 and the rear side plate-like wall portion 48, but the upper side and the lower side. The side plate-like wall portions 30 and 32 have substantially the same structure as the upper and lower plate-like wall portions 30 and 32 of the first and second substrate insertion portions 28a and 28b.

  On the other hand, as is apparent from FIGS. 4, 5, and 7, a plurality of terminal fittings 50a and 50b are fixed to the bottom wall portions of the first housing portion 24a and the second housing portion 24b of the housing 22 so as to penetrate therethrough. Has been. Each of the plurality of terminal fittings 50a and 50b is made of a long and narrow metal plate having elasticity, and a pair of two metal fittings 50a and 50b are paired together, and the total number is provided on the connector mounting portion 16 of the printed wiring board 10. The same number as that of the board-side connecting portions 20 is provided. Further, such a plurality of pairs of terminal fittings 50a, 50b are located at a predetermined interval in the width direction (left-right direction) of the housing 22, and the pair of terminal fittings 50a, 50b are spaced apart by a predetermined distance in the vertical direction. Opposed. And each of these terminal metal fittings 50a and 50b has penetrated each bottom wall part of the 1st housing | casing part 24a and the 2nd housing | casing part 24b in the thickness direction. As a result, one side portion of each terminal fitting 50a, 50b in the length direction protrudes rearward from the inner bottom surface of each casing portion 24a, 24b in the inner space of each casing portion 24a, 24b, The other side portion in the length direction protrudes forward from the outer bottom surface of each housing portion 24a, 24b.

  Further, one guide block 52 protrudes forward between each pair of terminal fittings 50a, 50b on the outer bottom surfaces (front surfaces) of the first and second housing portions 24a, 24b. Are integrally formed. That is, the plurality of guide blocks 52 are arranged to face each other in the width direction of the housing 22 with a distance slightly larger than the width of each terminal fitting 50a, 50b. Each of the plurality of guide blocks 52 includes a plate-like protrusion having a width substantially the same as the width of each of the terminal fittings 50a and 50b, and has a trapezoidal longitudinal section in which the vertical width gradually decreases toward the tip side. It has a shape. Thus, the upper surface of each guide block 52 is an upper inclined surface 54a inclined downward toward the tip, and the lower surface thereof is a lower inclined surface 54b inclined upward toward the tip.

  Of the terminal fittings 50 a and 50 b that make a pair, the base of the terminal fitting 50 a that is located above the guide block 52 and protrudes from the outer bottom surface of each housing portion 24 a and 24 b is inclined upward of the guide block 52. It is bent and deformed so as to incline downward along the surface 54a. Further, below the guide block 52, the base of the terminal fitting 50b positioned corresponding to the base of the terminal fitting 50a is bent and deformed so as to tilt upward along the lower inclined surface 54b of the guide block 52. . Furthermore, the lengthwise intermediate portions of the terminal fittings 50a and 50b forming the pair are elastic contact portions 56a and 56b extending substantially parallel to each other at positions closer to each other at intervals smaller than the intervals between the base portions. ing. Further, the front end portions (tip portions) of the paired terminal fittings 50a and 50b are widened portions 58a and 58b which are inclined in a direction away from each other toward the front. Here, the distance between the elastic contact portions 56a and 56b of the paired terminal fittings 50a and 50b is set to be smaller than the thickness of the connector mounting portion 16 of the printed wiring board 10 by a predetermined dimension.

  Further, the guide blocks 52 adjacent to each other at a predetermined distance in the width direction of the housing 22 are arranged between a plurality of pairs of terminal fittings 50a and 50b adjacent to each other and arranged at a predetermined interval in the width direction of the housing 22. A vertical wall 60 extending straight in the vertical direction is integrally formed between each of the two. Each of the plurality of vertical walls 60 is composed of a plate-like protrusion having a width substantially the same as the width of the guide block 52, and the vertical cross-sectional shape of the trapezoidal shape whose width in the vertical direction gradually decreases toward the tip. have. Thus, the plurality of vertical walls 60 are arranged to face each other with a predetermined distance in the width direction (left-right direction) of the housing 22 via the guide block 52 and adjacent to each other in the width direction of the housing 22. The terminal fittings 50a and 50b are separated by such a vertical wall 60. Here, the width (vertical dimension) of each vertical wall 60 is made larger than the width of the guide block 52 by a predetermined dimension.

  1, 8, and 9, the connector mounting portion 16 of the printed wiring board 10 is inserted into the three board insertion portions 28 a to 28 c of the housing 22 of the card edge connector 12. At the same time, between the pair of terminal fittings 50a, 50b, they are smoothly press-fitted while being guided by the expanded portions 58a, 58b at the tips of the terminal fittings 50a, 50b. Thereby, the printed wiring board 10 and the card edge connector 12 are assembled together.

  Under the assembled state of the printed wiring board 10 and the card edge connector 12, the elastic contact portions 56a of the plurality of pairs of terminal fittings 50a, 50b are press-fitted into the connector mounting portion 16, as shown in FIG. Based on the restoring force from the elastically deformed state, the plurality of board-side connecting portions 20 provided on the front and back surfaces of the connector mounting portion 16 are in contact with each other in a pressed state. Thereby, the connector attaching part 16 is pinched between the terminal metal fittings 50a and 50b which mutually face.

Further, as shown in FIG. 9, the connector mounting portion 16 is integrally formed on the lower plate-like wall portion 32 of the first, second, and third substrate insertion portions 28a, 28b, and 28c on both the front and back surfaces. It is inserted in each board | substrate insertion part 28a-28c so that it may overlap with the front end surface of the protrusion 46, and the lower surface of the upper side plate-shaped wall part 30. FIG. When the connector mounting portion 16 is inserted into the board insertion portions 28 a to 28 c, the end wall portions 34, 34 of the first board insertion portion 28 a and the second board insertion portion 28 b are connected to the connector mounting portion 16. They are inserted into the slits 14 and 14 respectively located on both sides (see FIG. 1).

Thereby, the end (connector mounting portion 16) of the printed wiring board 10 can be connected to the card edge connector without providing any protrusions or the like for insertion into the board insertion portions 28a to 28c with respect to the printed wiring board 10. 12 is inserted and fixed. In addition, each board into which the connector mounting portion 16 of the printed wiring board 10 is inserted is not provided on the card edge connector 12 without specially providing a positioning-dedicated part for insertion into the slits 14 and 14 of the printed wiring board 10 and positioning. The card edge connector 12 is positioned with respect to the printed circuit board 10 by using a part of the insertion portions 28a and 28b. As a result, the card edge connector 12 can be reliably assembled to the printed wiring board 10 in a state of being accurately positioned with a simple structure.

  Furthermore, when the connector mounting portion 16 is inserted into each of the board insertion portions 28a to 28c, the sliding surface 42 of the locking projection 40 of the upper plate-like wall portion 30 in each of the board insertion portions 28a, 28b, 28c While the flexible piece portion 38 is bent and deformed while sliding on the edge portion of the connector attachment portion 16, the engagement protrusion 40 gets over the edge portion of the connector attachment portion 16 and enters the engagement hole 18. Engage. Accordingly, as shown in FIG. 9, the locking surface 44 of the locking projection 40 is locked to the inner peripheral surface of the locking hole 18.

Then, the card edge connector 12 is easily fixed to the printed circuit board 10 in a detachable state by a one-touch operation simply by inserting the connector mounting portion 16 into each of the board insertion portions 28a to 28c. Thus, a printed wiring board having a card edge connector is formed, and the electrical connection state of each terminal fitting 50a, 50b of the card edge connector 12 with respect to each board side connection portion 20 of the connector mounting portion 16 is maintained. It is like that. Also, contact (short circuit) between the terminal fittings 50a and 50b that are in electrical contact with the different board-side connecting portions 20 by the vertical wall 60 provided between the adjacent pairs of the terminal fittings 50a and 50b. ) Is prevented.

In the printed wiring board provided with the card edge connector, the printed wiring board 10 is provided in a predetermined device, and protrudes rearward into the first and second housing portions 24a and 24b of the card edge connector 12. A predetermined circuit body or the like is connected to each of the terminal fittings 50a and 50b so that it can be used.

By the way, the card edge connector 12 which comprises the printed wiring board provided with the card edge connector made into the above structures is manufactured according to the procedure shown below, for example.

  That is, first, as shown in FIG. 10 (a) corresponding to the end surface of the VII-VII cross section of FIG. 4, a plurality of pairs of terminal fittings 50a and 50b are not yet bent and deformed and form a pair. The first and second casing portions 24a and 24b are respectively fixed by penetrating to the bottom wall portions of the first and second casing portions 24a and 24b (only the bottom wall portion of the first casing portion 24a is shown). A housing 22 is prepared and prepared.

  Such a housing 22 is easily manufactured, for example, by performing known insert molding using a plurality of pairs of terminal fittings 50a and 50b extending linearly as inserts. Thereby, unlike the conventional card edge connector, it is freed from the troublesome work of assembling and fixing a plurality of terminal fittings one by one to a preformed housing. As a result, the housing 22 to which a plurality of pairs of terminal fittings 50a and 50b are fixed can be manufactured efficiently and easily.

  Next, as shown in FIG. 10B, the base portions of the protruding portions of the paired terminal fittings 50a and 50b protruding forward from the outer surface of the bottom wall portion of the first housing portion 24a are sandwiched therebetween. While a pair of pressing dies 62a and 62b are arranged on both the upper and lower sides, a sandwiching die 64 is arranged between the tips of the protruding portions of the terminal fittings 50a and 50b that make the pair, and a pair of terminals. A pair of clamping molds 66a and 66b are arranged on both the upper and lower sides sandwiching the intermediate portion in the longitudinal direction of the protruding portions of the metal fittings 50a and 50b. Although not shown, a pair of pressing dies 62a and 62b, a sandwiching die 64, and a pair of clamping dies 66a and 66b are also provided in front of the outer surface of the bottom wall portion of the second housing portion 24b. It arrange | positions in the state similar to what is arrange | positioned ahead of the bottom wall part outer surface of the housing | casing part 24a.

  Note that the two pairs of pressing dies 62a and 62b located one pair in front of the outer surfaces of the bottom wall portions of the first casing portion 24a and the second casing portion 24b are both the first casing portion 24a and the second casing portion 24b. It has a longitudinal block configuration having a length approximately equal to the length in the left-right direction of the outer surface of each bottom wall portion of the casing portion 24 b and a thickness approximately equal to the protruding height of each guide block 52. And each guide block 52 by which the lower surface of the upper side press type | mold 62a located above the press type | molds 62a and 62b is integrally formed in each bottom wall part outer surface of the 1st and 2nd housing | casing parts 24a and 24b. The upper inclined pressing surface 68a is composed of an inclined surface corresponding to the upper inclined surface 54a, and each bottom of the first housing portion 24a and the second housing portion 24b with respect to the upper inclined pressing surface 68a. A plurality of recesses 69a into which upper end portions of the plurality of vertical walls 60 integrally formed on the outer surface of the wall can be fitted are provided. On the other hand, the lower pressing mold 62b located on the lower side has a lower inclined pressing surface 68b made of an inclined surface corresponding to the lower inclined surface 54b of each guide block 52. The pressing surface 68b is also provided with a plurality of recesses 69b into which the lower end side portions of the plurality of vertical walls 60 integrally formed on the outer surfaces of the bottom wall portions of the first housing portion 24a and the second housing portion 24b can be fitted. ing. The upper pressing mold 62a and the lower pressing mold 62b can be moved up and down so that the upper inclined pressing surface 68a and the lower inclined pressing surface 68b approach each other by a hydraulic mechanism (not shown). Yes.

  The sandwiching dies 64, 64 positioned in front of the outer surfaces of the bottom wall portions of the first housing portion 24a and the second housing portion 24b are both of the first housing portion 24a and the second housing portion 24b. It has a block shape having a length approximately the same as the length in the left-right direction of the outer surface of each bottom wall. Then, the upper inclined molding in which the upper surface of each sandwiching mold 64 facing the distal end portion of the terminal fitting 50a located on the upper side of the paired terminal fittings 50a and 50b is inclined downward toward the base side of the terminal fitting 50a. It is set as the surface 70a. On the other hand, the lower surface of each sandwiching die 64 facing the tip of the terminal fitting 50b located on the lower side is a lower inclined molding surface 70b that is inclined upward toward the base side of the terminal fitting 50b. Then, it can be moved in the front-rear direction between a position between the tip portions of the terminal fittings 50a and 50b that are paired with each other and a position drawn from between the tip portions by a hydraulic mechanism (not shown). Has been.

  The two pairs of sandwiching dies 66a and 66b located one pair in front of the outer surfaces of the bottom wall portions of the first casing portion 24a and the second casing portion 24b are both the first casing portion 24a and the second casing. The block form which has a length comparable as the left-right direction length of each bottom wall part outer surface of the part 24b is exhibited. In addition, the lower surface of the upper clamping die 66a located above the terminal fittings 50a and 50b and the upper surface of the lower clamping die 66b located below the upper clamping die 66b each have an upper sandwiched shape that exhibits a half-cylindrical cylindrical shape. A pressure surface 72a and a lower clamping surface 72b are formed. The upper clamping die 66a and the lower clamping die 66b are movable in the vertical direction and the front-rear direction so as to approach each other by a hydraulic mechanism (not shown) or the like.

  When such two pairs of pressing dies 62a and 62b, two sandwiching dies 64, and two pairs of squeezing dies 66a and 66b are arranged at predetermined positions, as shown in FIG. The pressing dies 62a and 62b are moved closer to each other in the vertical direction (the direction of the white arrow). At that time, the upper end side portion and the lower end side portion of the plurality of vertical walls 60 are respectively fitted into the plurality of recesses 69a and 69b of the upper and lower inclined pressing surfaces 68a and 68b of the pressing dies 62a and 62b, The pressing dies 62a and 62b move straight in the vertical direction while being guided by the plurality of vertical walls 60. As a result, the base of the terminal fitting 50a located on the upper side of the paired terminal fittings 50a, 50b is pressed against the upper inclined surface 54a of the guide block 52 by the upper inclined pressing surface 68a of each upper pressing mold 62a, While bending and deforming into a shape corresponding to the upper inclined surface 54a, the lower inclined surface 54b of the guide block 52 is formed by the lower inclined pressing surface 68b of the lower pressing die 62b at the base of the lower terminal fitting 50b. To bend and deform into a shape corresponding to the lower inclined surface 54b.

  At this time, a pair of presses in which all the base portions of the plurality of pairs of terminal fittings 50a and 50b protruding from the outer surface of the bottom wall portion of the first housing portion 24a are located in front of the outer surface of the bottom wall portion of the first housing portion 24a. The molds 62a and 62b are simultaneously bent and deformed at a stroke. In addition, all the bases of the plurality of pairs of terminal fittings 50a and 50b protruding from the outer surface of the bottom wall portion of the second housing portion 24b are also a pair of pressing molds positioned in front of the outer surface of the bottom wall portion of the second housing portion 24b. At 62a and 62b, it is simultaneously bent and deformed. Furthermore, all the tip portions of the plurality of pairs of terminal fittings 50a and 50b are in contact with the upper inclined molding surface 70a and the lower inclined molding surface 70b of the sandwiching die 64.

  Next, as shown in FIG. 11A, the two pairs of pinching dies 66a and 66b are moved closer to each other in the vertical direction (the direction of the white arrow). Thereby, all the length direction intermediate parts of the plurality of pairs of terminal fittings 50a and 50b protruding from the outer surface of the bottom wall part of the first casing part 24a are positioned in front of the outer surface of the bottom wall part of the first casing part 24a. The pair of clamping dies 66a and 66b are bent and deformed simultaneously and in a direction approaching each other. In addition, all the lengthwise intermediate portions of the plurality of pairs of terminal fittings 50a and 50b protruding from the outer surface of the bottom wall portion of the second housing portion 24b are also positioned in front of the outer surface of the bottom wall portion of the second housing portion 24b. The pair of clamping dies 66a and 66b are deformed simultaneously and all at once in a direction approaching each other. At this time, all the tip portions of the paired terminal fittings 50a and 50b correspond to the upper inclined molding surface 70a and the lower inclined molding surface 70b of the two sandwiching dies 64 and 64 disposed between them. At the same time, it is deformed (formed) at once. Then, widened portions 58a and 58b that are bent and deformed so as to incline in directions away from each other toward the tip are formed at all the tips of the terminal fittings 50a and 50b that are paired with each other.

  Subsequently, as shown in FIG. 11 (b), the two pairs of clamping dies 66a and 66b are simultaneously moved backward in a state in which they are brought close to each other. Thus, all the intermediate portions in the longitudinal direction of the plurality of pairs of terminal fittings 50a and 50b respectively protruding from the outer surfaces of the bottom wall portions of the first housing portion 24a and the second housing portion 24b are mutually connected over a predetermined length. Bending and deforming at the same time in the approaching direction. Thereby, elastic contact portions 56a and 56b extending in parallel at positions close to each other are formed at all the longitudinal intermediate portions of the terminal fittings 50a and 50b that are paired with each other.

As shown in FIGS. 11 (a) and 11 (b), widened portions 58a and 58b are formed at all the tip portions of the plurality of pairs of terminal fittings 50a and 50b, while the lengthwise intermediate portions thereof are formed. A series of bending processes for forming the elastic contact portions 56a and 56b on the portions are performed while the base portions of the terminal fittings 50a and 50b are pressed against the guide blocks 52 by the pressing dies 62a and 62b. Therefore, at the time of forming the expanded portions 58a and 58b and the elastic contact portions 56a and 56b, the base portions of the terminal fittings 50a and 50b are lifted from the upper and lower inclined surfaces 54a and 54b of the guide block 52, or are horizontally It is advantageously prevented from being displaced in the direction. Further, since the vertical wall 60 is provided so as to be adjacent to the guide block 52, the adjacent terminal fittings 50a and 50b come into contact with each other at the time of bending the terminal fittings 50a and 50. Nor. Accordingly, the widened portions 58a and 58b and the elastic contact portions 56a and 56b having a desired shape can be advantageously formed in a uniform and stable shape for all of the plurality of pairs of terminal fittings 50a and 50b.

  Thereafter, as shown in FIG. 11 (c), the two pairs of pressing dies 62a and 62b, the two sandwiching dies 64 and 64, and the two pairs of clamping dies 66a and 66b are all a plurality of pairs of terminal fittings. Separated from 50a, 50b. As a result, the intended card edge connector 12 having the structure shown in FIGS. 4 to 7 is obtained.

  As described above, in the card edge connector 12 of the present embodiment, the upper and lower inclined surfaces 54a and 54b of the guide block 52 integrally formed in the portion between the terminal fittings 50a and 50b that form a pair in the housing 22 are formed. While using as a surface, the terminal fittings 50a and 50b are simultaneously bent and deformed so that elastic contact portions 56a and 56b are formed at a time for all of the plurality of pairs of terminal fittings 50a and 50b. Yes. Thereby, not only the elastic contact portions 56a and 56b can be formed very efficiently with respect to the terminal fittings 50a and 50b, but also required when forming such elastic contact portions 56a and 56b. The number of molds to be reduced can be reduced. In addition, when the elastic contact portions 56a and 56b are formed, the pressing dies 62a and 62b that press the paired terminal fittings 50a and 50 from both sides move while being guided by the plurality of vertical walls 60. The elastic contact portions 56a and 56b of the terminal fittings 50a and 50b are stably formed in a uniform shape.

  Therefore, in such a card edge connector 12, a plurality of pairs of terminal wirings 10 of the printed wiring board 10 can be connected to a plurality of pairs by simply performing a simple process on the plurality of pairs of terminal fittings 50a and 50b. The structure in which the terminal fittings 50a and 50b are reliably contacted and held in the respective elastic contact portions 56a and 56b is extremely advantageous without using an extra member that presses the elastic contact portions 56a and 56b from the outside. Can be realized. As a result, an external connection terminal with high contact reliability can be simply and reliably provided on the printed wiring board 10.

  In the card edge connector 12, the end wall portions 34, 34 of the board insertion portions 28 a, 28 b are inserted into the slits 14, 14 located on both sides of the connector mounting portion 16, respectively, so that the card The edge connector 12 is attached to the printed wiring board 10. Thereby, it is not necessary to provide the protrusion part for insertion in the printed wiring board 10. FIG. In addition, the card edge connector 12 can be positioned on the printed wiring board 10 with a simple structure in which the positioning portion is configured by using the end wall portions 34, 34 that are the end walls in the width direction of the card edge connector 12. . In particular, since the strength of the end wall portions 34, 34 is improved by being formed integrally with the lower plate-like wall portion 32, the positioning accuracy during fitting into the slit is improved.

  In addition, since the rigidity of the upper and lower plate-like wall portions 30 and 32 is enhanced by the end wall portion 34, deformation in the approach / separation direction at the pair of plate-like wall portions 30 and 32 is suppressed. As a result, the locking strength of the locking projection 40 with respect to the locking hole 18 of the printed wiring board 10 and the reliability of the connector fixing strength can be improved.

  As described above, the embodiment of the present invention has been described in detail. For example, the formation positions of the elastic contact portions 56a and 56b with respect to the terminal fittings 50a and 50b that are paired with each other are not limited to the illustrated ones. . Therefore, for example, the respective distal end portions of the terminal fittings 50a and 50b that are paired with each other can be bent and deformed to be closest to each other, and the elastic contact portions 56a and 56b can be formed at the distal end portions. .

In addition, when the number of the terminal metal fittings 50a and 50b is large and the length of the card edge connector 12 is increased, a plurality of third board insertion portions 28c are appropriately provided at the intermediate portion, and the printed wiring board 10 is appropriately provided. In this case, a locking hole 18 may be provided at a corresponding portion of the connector mounting portion 16 to improve the fixing strength of the card edge connector 12 to the printed wiring board 10.

  Further, for example, a structure in which the board insertion portions 28a to 28c of the card edge connector 12 and the connector mounting portion 16 of the printed wiring board 10 inserted therein are fixed by using screws or caulking pins may be adopted. . Furthermore, members constituting various known locking mechanisms are fixed to the board insertion portions 28a to 28c and the connector mounting portion 16 by, for example, insert molding or the like, and using such a locking mechanism, the card The edge connector 12 can also be fixed to the printed wiring board 10.

A plurality of pairs of terminal fittings are provided by providing a plurality of through holes in the bottom wall portions of the first and second casing portions 24a and 24b and press fitting the terminal fittings 50a and 50b into the plurality of through holes, respectively. You may fix 50a, 50b to the bottom wall part of the 1st and 2nd housing | casing parts 24a, 24b.

Of course, the shape of the vertical wall 60 is not particularly limited to the example.

10: printed wiring board, 12: card edge connector (board connector), 14: slit, 16: connector mounting portion, 18: locking hole, 20: board side connection portion, 22: housing, 24: housing portion, 28: Substrate insertion part, 29: U-shaped peripheral wall part, 30: Upper plate-like wall part (a pair of plate-like wall parts), 32: Lower plate-like wall part (a pair of plate-like wall parts), 34: End wall Part: 40: locking projection, 50: terminal fitting, 52: guide block, 56: elastic contact part, 60: vertical wall

Claims (4)

A housing having a board insertion portion into which a connector attachment portion formed on an edge portion of a printed wiring board is inserted, and a plurality of pairs of terminal fittings arranged to protrude on both the front and back surfaces of the connector attachment portion, The terminal fitting is provided with an elastic contact portion that is attached to the board-side connecting portion formed in the connector mounting portion, and is mounted on the protruding portion of each terminal fitting. The elastic contact portion of the terminal fitting is brought into contact with the board-side connection portion formed on both the front and back surfaces of the printed wiring board using the elasticity of the printed wiring board so as to be held in an electrically connected state. In the board connector
The plurality of pairs of terminal fittings are provided at predetermined intervals in the width direction of the housing,
In the housing, between the terminal fittings forming each pair, guide blocks having inclined surfaces on both sides are provided so as to protrude in the protruding direction of the terminal fittings,
The terminal fittings that make a pair are bent along the inclined surfaces on both sides of the guide block in a direction approaching each other toward the projecting tip side, and the closest parts of the terminal fittings making each pair are elastically While being a contact part,
A vertical wall is formed between the terminal fittings adjacent to each other in the width direction of the housing so as to protrude from the housing in the same direction as the guide block and separate the adjacent terminal fittings. Board connector. A housing having a board insertion portion into which a connector attachment portion formed on an edge portion of a printed wiring board is inserted, and a plurality of pairs of terminal fittings arranged to protrude on both the front and back surfaces of the connector attachment portion, Each of the terminal fittings is assembled with the housing, and a protruding portion of each of the terminal fittings is provided with an elastic contact portion that comes into contact with the board-side connection portion formed in the connector mounting portion. Utilizing the elasticity of the metal fittings, the elastic contact portions of the terminal metal fittings are brought into contact with the board-side connection portions formed on the front and back surfaces of the printed wiring board, and are held in an electrically connected state. A method of manufacturing a board connector,
The plurality of pairs of terminal fittings are assembled at predetermined intervals, and guide blocks having inclined surfaces on both sides project between the terminal fittings forming the respective pairs in the protruding direction of the terminal fittings. Between the terminal fittings that are adjacent to each other, projecting from the housing in the same protruding direction as the guide block, and having a structure in which a vertical wall is formed separating the adjacent terminal fittings, A housing preparation step for forming the housing;
By deforming the plurality of pairs of terminal fittings assembled to the housing along the inclined surfaces on both sides of the guide block between the vertical walls, the paired terminal fittings are directed toward the projecting tip side. A method of manufacturing a connector for a board, comprising: a terminal fitting deforming step of forming the elastic contact portion at a portion closest to each other. A printed wiring board comprising the board connector according to claim 1,
The board insertion portion of the housing in the board connector has a U-shaped peripheral wall portion at least on both sides thereof, and the U-shaped peripheral wall portions are respectively overlapped on the front and back surfaces of the printed wiring board. A pair of plate-shaped wall portions, and an end wall portion that connects between the outer edge portions of the pair of plate-shaped wall portions,
In the printed wiring board, a pair of cut slits are formed, and the connector mounting portion is configured by a portion between the pair of slits. By inserting each end wall portion, the housing relative to the printed wiring board is positioned.
A printed wiring board provided with a board connector characterized by the above. A printed wiring board comprising the board connector according to claim 3,
The connector mounting portion of the printed wiring board is provided with a locking hole at least at both sides in the width direction, and on the opposing surfaces of the pair of plate-like wall portions in the end engaging portion of the housing. At least one of them is provided with a locking projection for locking in the locking hole of the printed wiring board, and the locking of the locking projection to the locking hole causes the board connector to be It is designed to be fixed to the printed wiring,
A printed wiring board provided with a board connector characterized by the above.

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