JP2004055463A5 - - Google Patents

Description

[0006]
In this conventional example, when the header 10 is fitted into the socket 1, the convex portion 15 of the body 2 of the socket 1 is fitted into the groove 11a of the body 11 of the header 10 as shown in FIG. The R-shaped surface 12a at the lower end of the post 12 abuts against the inclined surface at the upper end of the spring piece 4a of the contact 4 and flexes the spring piece 4a outwardly, while the post is located between the wall surface of the projection 15 and the contact 4. 12 and the side wall of the body 11 are fitted, and the contact portion 9 of the contact 4 elastically contacts the side surface of the post 12.

[0010]
[Means for Solving the Problems]
According to the first aspect of the present invention, the first body is a synthetic resin molded product, and has a flat first body formed on both sides of one surface so as to extend in both end directions, and is held on the side wall at regular intervals in both end directions. A header having a post made of a conductive metal plate, a second body having recesses on both sides of one side for fitting both side walls of the header, and a recess orthogonal to both ends of the recess; is composed of a plurality of conductive sheet metal contact and the Bei example socket of which is housed in the recess formed at regular intervals across the direction of the recess so as to straddle the said post, said first body A first contact surface portion exposed on the outer surface of the side wall and a second contact surface portion exposed on the inner surface of the side wall; and a central connection for integrally connecting the two contact surfaces and covering a tip portion of the side wall. Part of the second contact surface part, and a part of the second contact surface part A terminal portion inserted into the base portion and protruding outward from the other surface side of the first body at right angles to the side wall, wherein the contact is held at one end by an outer wall of the recess to be housed; A first contact piece disposed along the inner surface of the outer wall and having a contact portion with which a corresponding first contact surface of the post contacts, and a first contact on the bottom side of the recess. A first flexure formed to extend from one end of the piece so as to be parallel to the bottom of the recess, and a flexure formed to extend from the tip of the transverse piece to a bottom of the recess. Piece, a second bent piece that is folded back from the tip of the first bent piece and extends from the folded portion to the first contact piece side, and from the tip of the second bent piece toward the bottom of the recess. Substantially V-shape with bent portion protruding in the direction of the first contact piece And a second contact piece, one end of which is connected to the other end of the first contact piece and the other end of the first contact piece. A holding portion formed of an outer piece extended to the other face side of the second body along the outer face of the wall, and protruding outward from an extended end of the outer piece at right angles to the outer piece. and which was a terminal portion integrally crosspiece of at least the contact, first, second contact piece, the center piece of the holding portion the thickness of the second contact piece, the thickness of the outer piece and the terminal portion The projection distance to the horizontal plane between the bent portion of the second contact piece and the contact portion of the first contact piece is determined by measuring the distance between both contact surface portions of the post. And the distance from the bent portion of the second contact piece of the contact to the base end of the resilient cross piece for that dimension. Large separation can be achieved, so that when the header is fitted to the socket, the stress generated in the contact due to the press input of the post can be dispersed over the entire length of the contact, and a sufficient contact force to the post can be secured. In addition, the contact reliability can be improved, and a socket with a hard-to-reach contact can be realized. Furthermore, since the contact between the post and the contact is a two-point contact, the post may be twisted when pressed into the contact. It has the effect of becoming resistant to stress.

[0011]
In the invention of claim 2, in the invention of claim 1, the horizontal piece of the contact at least the contact crush a conductive metal plate, first, second contact piece, the holding portion and the thickness of the second contact piece The thickness of the center piece, the outer piece and the terminal part of the contact is made thinner, so that the spring properties of these pieces of the contact are improved by work hardening, and sufficient strength is ensured by securing the thickness of the holding part and the terminal part Therefore, there is an effect that deformation before and during incorporation into the body can be prevented.

[0012]
According to a third aspect of the present invention, in the first or second aspect of the present invention, the first flexible piece is formed by an inclined piece that is inclined upward from the horizontal piece to the folded portion, and the second flexible piece is formed by the folded portion. From the first contact point to the tip, and the height position of the folded portion and the height position of the bent portion of the second contact piece are set to be substantially the same height, and the post is the first and the second. the first two of the contact pieces in the middle of the predetermined position until in pressure input, the second flexure piece second as the lower end of the contact piece which can contact the crosspiece second contact piece by bending the The lower end position is set, and when the post is pressed into the predetermined position, the first and second bending pieces can be returned to the original position by the spring force accumulated at the time of bending. The first and second bending pieces are bent downward by input. The folded portion can be moved in a direction to reduce the frictional force between the bent portion of the contact piece of the contact and the second contact surface portion of the post, so that the post is pressed into the contact without buckling deformation. In addition, when the post is pressed into the contact at a predetermined position, the bent portion of the contact piece can be returned to the predetermined position by the return force of the first and second bending pieces. There is an effect that a sufficient height can be obtained even with a low profile, and the contact reliability is further improved.

[0018]
The contact 22 is formed by punching and bending a conductive metal plate made of beryllium copper as shown in FIG. 5, and holds the terminal portion 26 for soldering to a printed circuit board and the side wall 24A. Thus, a holding portion 27 for holding the contact 22 to the body 21 is integrally and continuously formed.

[0020]
The holding portion 27 is formed by bending an inverted U-shape. The side piece 27a, one end of which is connected to the base of the terminal portion 26, has the same thickness as the terminal portion 26 and has a width dimension equal to that of the base portion of the terminal portion 26. The locking projections 28 are formed to be wider than the side pieces 27a and to protrude outward at substantially the center of the side piece 27a. The thickness of the central piece 27b continuous from the upper end of the side piece 27a and the thickness of the side piece 27c further hanging down from the central piece 27b can be reduced by crushing the conductive metal plate that is the forming material. It is formed to be thinner than the thickness, and the upper portion is curved so as to protrude in the opposite direction to the side piece 27a, and the dimension between the lower portion at the position of the curved portion 27d and the inner side surface of the side piece 27a is set to the thickness of the side wall 24A . It is equal to or slightly smaller than.

[0028]
The sockets 20 are completed by mounting the contacts 22 at regular intervals on both sides of the body 21 in the longitudinal direction. The socket 20 is used by soldering and fixing a soldered portion 26a of a terminal portion 26 formed integrally with each contact 22 to a circuit pattern on the printed circuit board P. In the state of being soldered to the printed circuit board P, between the lower surface of the horizontal piece 22a of each contact 22 and the upper surface of the printed circuit board P, downward bending of the horizontal piece 22a of the contact 22, as shown in FIG. A gap S that enables the above is formed.

[0032]
Here, the side wall 44A including the contact surface portions 42a and 42b is a portion to be press-fitted between the bent portion 22e of the contact piece 22d of the contact 22 of the socket 20 and the curved portion 27d of the side piece 27c of the holding portion 27. The tip of the curved portion 27d of the side piece 27c contacts the surface portion 42a, and the tip of the bent portion 22e of the contact piece 22d contacts the contact surface portion 42b.

[0034]
Further are fitted to the center portion of the side wall 44B of the both ends of the body 41 across the reinforcing bracket 46 has a side shape which is formed by bending in an inverted U-shape in side wall 44B, the reinforcement along the outer surface of the side wall 44 B On the outer surface of the metal fitting 46, a projection 47 is provided which engages with the locking engagement concave portion (not shown) on the body 21 side of the socket 20.

[0038]
On the other hand contact piece 22 d of the tip portion of the inclined piece 22c is the lower end by the downward movement abuts the vicinity of the boundary portion of the horizontal piece 22a and the inclined piece 22b, also the contact piece 22d and the post 42 the frictional forces of the post 42 is weakened The leading end gets over the bent portion 22e of the contact piece 22d, and the bent portion 22e comes into contact with the contact surface portion 42b of the post 42.

[0039]
Then, the projection 45 of the contact surface portion 42a of the contact 22 rides over the curved portion 27d of the side piece 27c of the holding portion 27 and is positioned below and engaged with the curved portion 27d, and the outside of the side wall 42B of the body 41 of the header 40. The protrusions 47 on the outer surface of the reinforcing metal fittings 46 along the side surfaces are engaged with the locking recesses (not shown) on the body 21 side of the socket 20 and locked, and the side walls 42A and 42B of the body 41 of the header 40 are locked. Is completely fitted into the recess 21 a of the socket 20, and when the downward movement of the post 42 due to the pushing into the header 40 stops, the inclined piece 22 b of the contact 22 is moved by the spring force accumulated at the time of bending. A force for returning the folded portion 22f upward in the direction of moving the folded portion 22f upward about the boundary portion with the center portion 22a acts. An upward returning force acts as the center, and as a result, the contact piece 22c moves upward while returning the bent portion 22e to the contact surface portion 42b of the post 42, and returns to the original position. Press with a predetermined contact pressure. As a result, a large contact pressure can be obtained and the effective fitting length of the post 42 to the contact 22 can be sufficiently ensured.

[0040]
In the present embodiment configured as described above, the position on the horizontal line where the curved portion 27d of the side piece 27c of the holding portion 27 is in contact with the contact surface portion 42a on the post 42, and the bent portion of the contact piece 22d of the contact 22 the distance between the position of the horizontal line obtained by projecting the position of 22e to be but can be shortened, strong and that to ensure the contact pressure of the contact 22 can take in enough together effective length of fit, further, the bent portion The stress can be reduced by increasing the distance from the position of 22e to the base end of the inclined piece 22b, which is the center of deflection of the contact 22, and the width of the inclined piece 22b gradually decreases from the base end to the center. By providing the tapered portion 22g, the stress can be dispersed and the concentration of the stress on the folded portion 22f can be eliminated.

[0043]
(Embodiment 3)
In the first embodiment, the curved portion 27d that engages with the protrusion 45 of the post 42 is formed as a thick portion from the upper end of the side piece 27c of the holding portion 27 to a slightly lower position and a step 27e between the thin portion below the thick portion. May be formed as shown in FIG. 8, and the protrusion 45 of the post 42 may be engaged with the step 27e. In this case, the thick portion serves as a contact portion with the contact surface portion 42a of the post 42.

[0044]
【The invention's effect】
According to the first aspect of the present invention, the first body is a synthetic resin molded product, and has a flat first body formed on both sides of one surface so as to extend in both end directions, and is held on the side wall at regular intervals in both end directions. A header having a post made of a conductive metal plate, a second body having recesses on both sides of one side for fitting both side walls of the header, and a recess orthogonal to both ends of the recess; And a socket having a plurality of conductive metal plate contacts housed in each of the recesses provided at regular intervals in both ends of the recess so as to straddle the recess. A first contact surface portion exposed on the outer surface of the side wall and a second contact surface portion exposed on the inner surface of the side wall; and a central connection for integrally connecting the two contact surfaces and covering a tip portion of the side wall. Part of the second contact surface part, and a part of the second contact surface part A terminal portion inserted into the base portion and protruding outward from the other surface side of the first body at right angles to the side wall, wherein the contact is held at one end by an outer wall of the recess to be housed; A first contact piece disposed along the inner surface of the outer wall and having a contact portion with which a corresponding first contact surface of the post contacts, and a first contact on the bottom side of the recess. A first flexure formed to extend from one end of the piece so as to be parallel to the bottom of the recess, and a flexure formed to extend from the tip of the transverse piece to a bottom of the recess. Piece, a second bent piece that is folded back from the tip of the first bent piece and extends from the folded portion to the first contact piece side, and from the tip of the second bent piece toward the bottom of the recess. Substantially V-shape with bent portion protruding in the direction of the first contact piece And a second contact piece, one end of which is connected to the other end of the first contact piece and the other end of the first contact piece. A holding portion formed of an outer piece extended to the other face side of the second body along the outer face of the wall, and protruding outward from an extended end of the outer piece at right angles to the outer piece. and which was a terminal portion integrally crosspiece of at least the contact, first, second contact piece, the center piece of the holding portion the thickness of the second contact piece, the thickness of the outer piece and the terminal portion The projection distance to the horizontal plane between the bent portion of the second contact piece and the contact portion of the first contact piece is determined by measuring the distance between both contact surface portions of the post. And the distance from the bent portion of the second contact piece of the contact to the base end of the resilient cross piece for that dimension. Large separation can be achieved, so that when the header is fitted to the socket, the stress generated in the contact due to the press input of the post can be dispersed over the entire length of the contact, and a sufficient contact force to the post can be secured. In addition, the contact reliability can be increased, and a socket having a hard-to-reach contact can be realized. Furthermore, since the contact between the post and the contact is a two-point contact, the post may be twisted when pressed into the contact. It has the effect of becoming resistant to stress.

[0045]
In the invention of claim 2, in the invention of claim 1, the horizontal piece of the contact at least the contact crush a conductive metal plate, first, second contact piece, the holding portion and the thickness of the second contact piece The thickness of the center piece, the outer piece and the terminal part of the contact is made thinner, so that the spring properties of these pieces of the contact are improved by work hardening, and sufficient strength is ensured by securing the thickness of the holding part and the terminal part Therefore, there is an effect that deformation before and during assembling into the body can be prevented.

[0046]
According to a third aspect of the present invention, in the first or second aspect of the present invention, the first flexible piece is formed by an inclined piece that is inclined upward from the horizontal piece to the folded portion, and the second flexible piece is formed by the folded portion. From the first contact point to the tip, and the height position of the folded portion and the height position of the bent portion of the second contact piece are set to be substantially the same height, and the post is the first and the second. the first two of the contact pieces in the middle of the predetermined position until in pressure input, the second flexure piece second as the lower end of the contact piece which can contact the crosspiece second contact piece by bending the The lower end position is set, and when the post is pressed into the predetermined position, the first and second bending pieces can be returned to the original position by the spring force accumulated at the time of bending. The first and second bending pieces are bent downward by input. The folded portion can be moved in a direction to reduce the frictional force between the bent portion of the contact piece of the contact and the second contact surface portion of the post, so that the post is pressed into the contact without buckling deformation. In addition, when the post is pressed into the contact at a predetermined position, the bent portion of the contact piece can be returned to the predetermined position by the return force of the first and second bending pieces. There is an effect that a sufficient height can be obtained even with a low profile, and the contact reliability is further improved.

Claims (3)

A flat first body formed of a synthetic resin molded product and having a fitting side wall formed on both sides of one surface so as to extend in both end directions, and a conductive metal plate post held on the side wall at regular intervals in both end directions. A header with
A second body provided with recesses on both sides of one side for fitting both side walls of the header, and provided at regular intervals in both directions of the recess so as to be orthogonal to both ends of the recess and straddle the recess. And a socket with a plurality of conductive metal plate contacts housed in each of the recesses,
The post integrally connects the first contact surface portion exposed on the outer surface of the side wall of the first body, the second contact surface portion exposed on the inner surface of the side wall, and the contact surface portions. A center connecting portion that covers a tip portion of the side wall, a part of which is inserted into one end of the second contact surface portion in the side wall base portion, and an outer side orthogonal to the side wall from the other surface side of the first body; Terminal part protruding toward
The contact has one end held at an outer wall of the recess to be accommodated and arranged along the inner surface of the outer wall, and has a contact portion with which a corresponding first contact surface of the post contacts. A first contact piece, a horizontal piece extending from one end of the first contact piece on the bottom side of the concave portion so as to extend in parallel with the bottom portion of the concave portion, and a portion between the tip of the horizontal piece and the bottom portion of the concave portion. A first bending piece extended so as to provide a gap that can be bent by the first bending piece; and a second bending piece formed by folding back from a front end of the first bending piece and extending from the folded portion to the first contact piece side. And a substantially rectangular second contact piece having a bent portion protruding from the tip of the second flexure piece toward the bottom of the recess in the direction of the first contact piece. And one end is connected to the other end of the first contact piece, and the tip of the outer wall of the concave portion is A holding portion composed of a central piece extending from the other end of the piece to the other surface of the second body along the outer surface of the wall; A connector comprising: an outer piece integrally provided with a terminal portion projecting outwardly perpendicular to the outer piece. Crosspiece of contact at least the contact crush a conductive metal plate, first, second contact piece, the center piece of the holding portion the thickness of the second contact piece, thinner than the thickness of the outer piece and the terminal portions formed The connector according to claim 1, wherein The first bending piece is formed by an inclined piece that is inclined upward from the horizontal piece to the folded portion, and the second flexible piece is formed by an inclined piece that is inclined from the folded portion to the tip. the height position, with the approximately the same height position the height position of the bent portion of the second contact piece, in the course of the post is a first, predetermined position or in pressure input to the second contact pieces The lower end position of the second contact piece is set so that the lower end of the second contact piece can contact the horizontal piece by the bending of the first and second flexure pieces. 3. The connector according to claim 1, wherein the second bending piece has a shape capable of returning to an original position by a spring force accumulated at the time of bending.

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