JP4665926B2 - connector - Google Patents

Description

The present invention relates to a connector for detachably connecting the printed boards disposed in the same plane.

Conventionally, this type of connector is disclosed in Patent Document 1. In manufacturing this connector, first, only one of the two side portions of the lead frame on which a large number of leads are formed is cut off, and the leads that are connected to each other by the other side portion are formed on the plug body. The cut first end is inserted into the through hole of the plug body. Then, a cover is attached to the plug body in this state, and each lead is held by the plug body. Finally, the other side of the lead frame is separated from each lead, and the second end of each lead is formed to complete the connector. When this connector is connected to a socket mounted on a printed circuit board, the first end of each lead comes into contact with each contact in the socket.
JP 2003-272734 A

  By the way, in the connector described in the above publication, the first end of each lead is inserted into each through hole of the plug body and fixed. For this reason, it is necessary to provide a gap for smoothly inserting the lead between the through hole and the lead. Therefore, there is a variation in the position of the first end of each lead in the plug body by the gap. As a result, the contact state of each lead with respect to each contact of the socket varies, and there is room for improvement in the contact reliability.

  In the above connector, as the number of leads in one connector is increased, the assembly work of the leads is increased, and the number of manufacturing steps is increased. Further, in order to reduce the size of the connector, the smaller the width of each lead and the pitch between the leads, the more difficult it is to assemble the leads into the plug body.

The present invention has been made paying attention to such problems existing in the prior art. The purpose is to improve the contact reliability of each lead, and even if the number of leads is increased, the number of manufacturing steps is not increased, and the manufacturing is easy even if the width of the leads is reduced. It is to provide a connector.

In order to achieve the above object, the present invention provides a socket mounted on two printed circuit boards arranged in parallel to each other, a pair of plugs attached to and detached from each socket, and supported between the plugs. that a plurality of connectors formed by the lead, each plug, the is molded in a state of being integrated with each lead with the leads connecting to each other, the wall of the socket, the A holding metal fitting fixed on the printed circuit board is formed on a wall portion of the socket on the side where the claw portion is formed. Is provided .

  According to this configuration, unlike the connector configured by assembling each lead to the plug, there is no gap between the plug and the lead, so the position accuracy of each lead holding portion with respect to the plug is improved and the socket is improved. The contact reliability of each lead with respect to is improved. Further, even if the number of leads is increased, the number of manufacturing steps does not increase, and even if the width of the leads is reduced, manufacturing is not difficult. Therefore, manufacture can be performed easily.

Further , since the bonding strength is improved as compared with the configuration in which the socket is fixed on the printed circuit board only by adhesion, the long-term reliability of the fixed state is improved.

Furthermore , even when the positional relationship between the printed circuit boards is deviated from the predetermined positional relationship, the plug coupled to the socket is held in a normal position by fixing the claw portion.

Also, the present invention is characterized in that a bent portion or a curved portion allowing relative displacement of both end portions thereof is formed in the central portion of the lead.
According to this configuration, even if the positional relationship between the two printed circuit boards deviates from the predetermined positional relationship, the displacement in the positional relationship between both plugs is absorbed by the elastic deformation of the bent portion, and an excessive force is applied from each lead to the plug. Is prevented from being added. Accordingly, the plug is held in a normal position with respect to the socket.

In the present invention, the claw portion is formed with an extending piece extending upward from the upper surface of the socket .
In the present invention, a connecting member for connecting the leads in an insulated state is formed on the plurality of leads between the pair of plugs .

  According to the present invention, the contact reliability of each lead can be improved, the number of leads does not increase even if the number of leads is increased, and the manufacture is easy even if the lead width is reduced. Become.

Next, an embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 1, 2, and 3, the connector 10 of this embodiment includes a pair of sockets 11 mounted on two printed circuit boards P1 and P2 arranged in substantially the same plane, and both the sockets. 11 and a connecting member 12 that electrically connects the two.

  As shown in FIGS. 2 and 3, both sockets 11 are fixed on printed circuit boards P1 and P2. Both sockets 11 have the same symmetrical structure, and include a housing 13 integrally formed of, for example, an insulating material made of synthetic resin. In this housing 13, a large number of contacts integrally formed of a conductive material made of metal. 14 is mounted. Each contact 14 is electrically connected to a connection terminal (not shown) on the printed circuit boards P1 and P2.

  As shown in FIGS. 2 and 3, the connecting member 12 is formed of a pair of plugs 15 that are integrally formed of an insulating material such as synthetic resin and detachable from the socket 11, and a conductive material made of metal. A plurality of leads 16 that are integrally formed and held between the plugs 15 are formed. In the coupled state of each plug 15 to the socket 11, both ends of each lead 16 are in contact with and electrically connected to the contacts 14 of each socket 11.

Next, the socket 11 and the connection member 12 will be described in detail.
As shown in FIGS. 3 to 5, the housing 13 of the socket 11 is formed with a groove-shaped female-side connection portion 17 for coupling the plug 15, and on the inner surface of one of the both wall portions, A plurality of holding grooves 18 (FIG. 5) are formed at equal intervals in the length direction of the socket 11. The contacts 14 are respectively held in the holding grooves 18. A plurality of claw portions 19 for fixing the plug 15 are integrally formed on the other outer side of the both wall portions of the housing 13. As shown in FIG. 5, the claw portion 19 has an extending piece 19 a that extends upward from the upper surface of the housing 13 and can be elastically bent, and has an inclined surface 19 b that faces obliquely upward on the inner surface thereof. An engaging convex portion 19c is formed. The upper end portion of the extending piece 19a is a pressing portion 19d that is pressed to curve the extending piece 19a. Further, a plurality of positioning protrusions 20 for integrally positioning the socket 11 are formed on the lower surface of the housing 13 so as to engage with holes formed on the printed circuit boards P1 and P2.

  As shown in FIG. 5, each contact 14 has a held portion 14 a held in the holding groove 18 of the socket 11, and is arranged in the female side connecting portion 17 from the upper end of the held portion 14 a. The contact portion 14b is extended downward, and a terminal portion 14c that is in contact with the printed circuit board P1 (or P2) is extended to the outside of the socket 11 from the lower end of the held portion 14a.

  As shown in FIGS. 2, 3 and 6, the plug 15 of the connecting member 12 is formed so as to be connected to each lead 16 in an insulated state while being integrated with each lead 16. The plug 15 is formed with a ridge-like male side connection portion 21 to be inserted into the female side connection portion 17 of the socket 11. A plurality of engaging recesses 24 for engaging the respective claws 19 of the socket 11 are formed outside the upper portion of the plug 15.

  As shown in FIG. 3, each lead 16 has a connecting portion 16 a for connecting between both plugs 15, and a held portion 16 b held by the plug 15 extends downward from both ends thereof. ing. A lower end portion of each held portion 16 b is a contact portion 16 c that contacts the contact 14. In addition, a bent portion 16d is formed in the center of the connecting portion 16a to allow relative displacement between the held portions 16b. The held portion 16b is held in a state of being inserted into the upper portion of the plug 15, and the contact portion 16c is exposed to the outside on one of both outer surfaces of the male side connecting portion 21. Further, the central portion of each lead 16 is connected by a plurality of (three in this embodiment) connecting members 25 made of synthetic resin.

  As shown in FIGS. 7 and 8, groove-shaped metal fitting holding portions 26 are respectively formed on both ends of the socket 11, and the socket 11 is placed on the printed circuit boards P <b> 1 and P <b> 2 in each metal fitting holding portion 26. The holding metal fittings 27 for fixing are respectively fixed. Each holding metal fitting 27 has a contact piece 27a that comes into contact with the printed circuit boards P1 and P2, and the contact piece 27a is soldered onto the printed circuit boards P1 and P2, whereby the socket 11 is connected to the printed circuit boards P1 and P2. Secure on top.

Next, the manufacturing method of this embodiment configured as described above will be described.
To manufacture the connector 10, first, as shown in FIG. 9, as a frame manufacturing process, holes 30 a and 30 b are press punched into a strip-shaped metal thin plate (hoop material), and a large number of holes are formed between both sides. A lead frame 30 on which the leads 16 are formed is manufactured. The lead frame 30 is formed with a large number of leads 16 grouped into a predetermined number used for one connector 10.

  Next, as a plug forming step, as shown in FIGS. 10 and 11 (a) and 11 (b), both plugs 15 are insert-molded with the lead frame 30 set in a molding die (not shown). 15, a plurality of leads 16 used in one connector 10 are connected to each other, and both plugs 15 are integrated with each lead 16. At this time, the connecting members 25 are insert-molded together with the plugs 15 with the same molding die, and the central portions of the leads 16 are connected to each other by the connecting members 25 and the connecting members 25 are connected to the leads 16. Integrate with the central part.

  Next, as shown in FIGS. 12 (a) to 12 (f), as the lead forming process and the lead separating process, each lead 16 includes a lead frame 30 integrated with both plugs 15 and each connecting member 25. While forming in order so that it may become a required shape, the both sides of the lead frame 30 are cut off from each lead 16.

  That is, first, as shown in FIGS. 12 (a) and 12 (b), one of the both side portions is cut off from the lead frame 30, and then the side portion is cut off as shown in FIG. 12 (c). If the lead frame 30 is bent on the other side, a contact portion 16 c is formed on one end side of each lead 16.

Next, as shown in FIG. 12D, the lead frame 30 is bent at the center in the width direction to form a bent portion 16 d in each lead 16.
Next, as shown in FIG. 12E, the lead frame 30 is bent on the side where the side portions remain.

  Finally, as shown in FIG. 12 (f), if the remaining side portions are separated from the lead frame 30 and the leads 16 are separated from each other, a contact portion 16 c is formed on the other end side of each lead 16.

Through the above steps, the connection member 12 including the pair of plugs 15, the connecting member 25, and the plurality of leads 16 is manufactured.
Next, the operation of this embodiment configured as described above will be described.

  In order to connect the two printed circuit boards P1 and P2 with the connector 10, first, the sockets 11 are mounted on the printed circuit boards P1 and P2, respectively. At this time, the socket 11 is positioned at a predetermined position by the engagement of the positioning protrusions 20 with respect to the respective printed circuit boards P1 and P2. In this state, the contact piece 27a of each holding metal fitting 27 of the socket 11 contacts the printed circuit boards P1 and P2. By soldering the contact pieces 27a on the printed circuit boards P1 and P2, the socket 11 is firmly fixed on the printed circuit boards P1 and P2 in addition to the adhesive force by the adhesive.

  Next, each plug 15 of the connection member 12 is connected to the socket 11 mounted on each printed circuit board P1, P2. At this time, when the male side connection portion 21 of each plug 15 is inserted into the female side connection portion 17 of the socket 11, the upper projecting portion of the plug 15 is formed on the inclined surface 19 b of the engagement convex portion 19 c of each claw portion 19. 2 and the extending piece 19a of the claw portion 19 is elastically curved outward as indicated by a two-dot chain line in FIG. When the upper projecting portion of the plug 15 gets over the engaging convex portion 19c, the extending piece 19a returns to its original position by its own elasticity, and the engaging convex portion 19c engages with the upper surface of the upper projecting portion. To do. As a result, the plug 15 is firmly fixed to the socket 11 while being connected to the socket 11. The sockets 11 are connected by the connecting member 12.

  By the way, when the connector 10 is connected between the two printed circuit boards P1 and P2 whose positional relations are fixed in advance, the two sockets 11 have a predetermined positional relation due to variations in the fixing positions of the printed circuit boards P1 and P2 and the sockets 11. There may be a deviation in the X direction, the Y direction, and the Z direction shown in FIG. When the connector 10 is connected between the sockets 11, the positional relationship between the plugs 15 in the connecting member 12 is absorbed by the elastic deformation of the bent portions 16 d of the leads 16 and is connected to the socket 11. It is possible to prevent an excessive force from being applied to each pin 15 from each lead 16.

  Further, when the two printed boards P1 and P2 connected by the connector 10 are displaced in the Y direction in FIG. 1, the adjacent leads 16 may be in contact with each other. However, contact between adjacent leads 16 is prevented by the connecting member 25 that connects the leads 16 in an insulated state.

  When removing the connection member 12 from both sockets 11, the pressing portions 19 d of the respective claw portions 19 of the socket 11 are pressed to bend the extending piece 19 a outward, and the engaging convex portion 19 c is removed from the upper projecting portion of the plug 15. When the plug 15 is pulled upward in this state, the plug 15 is removed from the socket 11 and removed.

This embodiment described in detail above has the following effects.
(1) The plug 15 was formed in a state where the plurality of leads 16 were connected to each other in an insulated state and integrated with each lead 16. For this reason, unlike a connector configured by assembling each lead 16 to the plug 15, there is no gap between the plug 15 and each lead 16, and thus the positional accuracy of the contact portion 16 c of each lead 16 with respect to the plug 15. Becomes higher. As a result, the contact reliability with respect to each contact 14 of the socket 11 improves.

Further, even if the number of leads 16 is increased, the number of manufacturing steps is not increased, and even if the width of the leads 16 is reduced, the manufacturing is easy and the manufacturing can be performed easily.
(2) The socket 11 was fixed on the printed circuit boards P1 and P2 via the holding metal fittings 27 soldered onto the printed circuit boards P1 and P2. Accordingly, since the bonding strength is improved as compared with the case where the socket 11 is fixed on the printed circuit boards P1 and P2 only by adhesion, the long-term reliability of the fixed state is improved.

  (3) The plug 15 is fixed to the socket 11 by the claw portion 19 formed integrally with the socket 11. For this reason, even if the two printed circuit boards P1 and P2 are deviated from the predetermined positional relationship, the plug 15 in a state of being coupled to the socket 11 is held at a normal position by fixing the claw portion 19. As a result, the contact state between each lead 16 and each contact 14 is well maintained.

  (4) Each lead 16 is formed with a bent portion 16d that allows relative displacement between the held portions 16b. Therefore, even if the two printed circuit boards P1 and P2 are deviated from the predetermined positional relationship, the displacement of the positional relationship between the plugs 15 is absorbed by the elastic deformation of the bent portion 16d, and an excessive force is applied from each lead 16 to the plug 15. Is prevented from being added. Therefore, the plug 15 is held at a normal position with respect to the socket 11.

  (5) In manufacturing the connecting member 12, the lead frame 30 on which a large number of leads 16 are formed is placed in a molding die, the plug 15 is insert-molded, and the plurality of leads 16 are connected by the molded plug 15. In addition, the plug 15 is integrated with each lead 16. For this reason, unlike the conventional manufacturing method in which the lead 16 separated from the lead frame 30 is assembled to a plug formed by itself, the number of manufacturing steps can be prevented from increasing even if the number of leads 16 is increased. . Further, the lead 16 and the plug 15 can be easily assembled even if the width of the lead 16 and the pitch between the leads 16 are reduced.

In addition, this embodiment can also be changed and embodied as follows.
The lead 16 has a configuration in which a curved portion that allows relative displacement between the held portions 16b and the contact portion 16c is provided instead of the bent portion 16d. Or it is set as the structure which provided the bending part and the curved part.

  In the manufacturing process of the connector 10, a lead molding process for forming the lead 16 into a required shape is performed before a plug molding process for molding the plug 15.

The perspective view which shows the connector of one Embodiment. The longitudinal cross-sectional view which shows a connector. The longitudinal cross-sectional view which shows the connector before a connection. The perspective view which shows a socket. The longitudinal cross-sectional view which shows a socket. The perspective view which shows a connection member. The top view which shows the edge part of a socket. FIG. 8 is a sectional view taken along line aa in FIG. 7. The top view which shows a part of lead frame. The top view which shows the lead frame in which the plug was formed. (A) is a side view which shows a lead frame, (b) is a longitudinal cross-sectional view similarly. (A)-(f) is a schematic diagram which shows the manufacturing process of a connection member all.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Connector, 11 ... Socket, 12 ... Connection member, 15 ... Plug, 16 ... Lead, 16d ... Bending part, 19 ... Claw part, 27 ... Holding metal fitting, 30 ... Lead frame.

Claims (4)

A connector comprising sockets respectively mounted on two printed circuit boards arranged in parallel to each other, a pair of plugs attached to and detached from each socket, and a plurality of leads supported between the plugs. ,
Each plug is formed in a state where the leads are connected to each other in an insulated state and integrated with each lead ,
The wall portion of the socket is formed with a claw portion that is hooked to the plug and fixed in a coupled state to the socket,
The connector is characterized in that a holding metal part fixed on the printed circuit board is provided on the wall part of the socket where the claw part is formed . The connector according to claim 1 , wherein a bent portion or a bent portion that allows relative displacement of both ends of the lead is formed in the center portion of the lead. The connector according to claim 1, wherein an extension piece extending upward from the upper surface of the socket is formed in the claw portion . 4. The connection member that connects the leads in an insulated state is formed on the plurality of leads between the pair of plugs. 5. connector.

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