JPH024991B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connector for electrically connecting flexible printed boards having, for example, foil-like conductors. An example of a conventional connector of this type is shown in Fig. 1a,
As shown in FIG. 1B, there is one that is composed of an insulator 10 , a rotating operation plate 20 , a contact 30 , and a flexible printed board 40 . The insulator 10 has a substantially rectangular parallelepiped shape and is attached to a substrate (not shown), and has a plurality of contact insertion holes bored at right angles to the substrate at intervals, and adjacent to each contact insertion hole. It has a hole of a predetermined depth. An insertion piece 25 of a rotation operation plate 20 and a flexible printed board 40 , which will be described later, are inserted into this hole. In addition, 1
5 is a protrusion. The rotating operation plate 20 has a pivot portion 21 and an operation portion 22 integrally formed at both ends of a rod-shaped operation plate main body 24.
An insertion piece 25 is integrally formed on the operation plate main body 24 between the two, and the cross section is approximately L-shaped.
Moreover, it has an engaging portion that can be engaged with and detached from the insulator 10 . The contacts 30 are electrically connected to external circuits in respective contact insertion holes of the insulator 10 , and at least spring contact portions are disposed toward the holes. Note that 23 is a hook, and 27 is a knurled portion. The flexible printed board 40 is inserted between the spring contact portion of the contact 30 and the hole of the insulator, and the flexible printed board 40 is inserted between the spring contact portion of the contact 30 and the hole of the insulator, and is inserted into the insertion piece 25 of the rotation operation plate 20 .
The contact pressure generated between the spring contact portion and the spring contact portion is used to electrically connect the contact to the contact. In an example of a conventional connector having such a configuration, with the pivot portion 21 of the rotation operation plate 20 being pivotally supported on the insulator 10 , the end portion of the conductor foil exposed from the insulation coating of the flexible printed board 40 is When the contact 30 is inserted between the spring contact portion and the hole, the rotation operation plate 20 is rotated, and the hook 23 is engaged with the engagement recess of the insulator 10 , the insertion piece 25 of the rotation operation plate 20 is inserted into the insulator. It fits perfectly into hole 10 . As a result, the flexible printed board 40 is strongly pressed against the contacts 30 , and even if a large tensile force or vibration is generated on the flexible printed board 40 , it is difficult to come off, and the insulator can be easily installed, improving reliability. However, in the configuration of an example of such a conventional connector, since the rotary operation plate 20 is combined with the insulator 10 , the configuration cannot be simplified, and it is difficult to solder the contacts attached to the insulator 10 . It is difficult to clean the necessary flux. Furthermore, when the flexible printed board 40 is inserted, the ends of the conductor foil of the flexible printed board 40 are rubbed by the insertion piece 25 of the rotation operation plate 20 , so the ends of the conductor foil are likely to be damaged, especially if the conductor foil is soft. In this case, the drawback is significant. In addition, there are other examples of connectors different from the conventional connectors described above, which are shown in FIGS. 2a and 2b. This connector consists of a contact 50 , a pedestal 60 that supports the contact 50, and a lid 70 that applies a pressing force to the contact 50 . The configuration of this connector is as follows. That is, in a connector for a flexible printed board in which the contact 50 provided on the pedestal 60 is pressed by the lid 70 to make an electrical connection with the foil conductor of the flexible printed board 40 , one of the side walls of the lid 70 and the pedestal 60 A hook 62 having an engaging stepped portion 61 on one side and an engaging protrusion 71 on the other side is formed, and a curved portion perpendicular to the contact insertion direction is formed near the tip of the contact 50 . When placed over the base 60 , the engagement protrusion 71 is engaged with the engagement step 61, and the contact 50 is engaged with the engagement protrusion 71.
The curved portion of the flexible printed board 40 is configured so as to contact the foil conductor of the flexible printed board 40. Even in conventional connectors with this configuration,
Since the pedestal 60 and the lid 70 are combined, the structure cannot be simplified, and it is difficult to clean the necessary flux when inserting and soldering contacts to a board (not shown). The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a connector that can be simplified in structure, easy to clean the flux, and less likely to damage the connecting portion of a printed board. The present invention will be described below with reference to embodiments shown in the drawings, but first a description will be given of a connector of a previous application (Japanese Patent Application No. 179336/1982) which is currently under development to achieve the above object. This is a printed wiring board (hereinafter simply referred to as a board) 80 and a contact 9
0, a contact movable operating member 100 , and a flexible printed board (not shown). As shown in FIGS. 3 and 4, the substrate 80 has a plurality of, for example, circular contact insertion holes 81 formed in a row at equal intervals, and on both sides of these contact insertion holes 81, for example, rectangular contact insertion holes 81 are formed. A guide piece insertion hole 82 is formed. The contact 90 is made by bending a band-shaped conductor into, for example, an R-shape as shown in FIGS. 3 and 4, and a spring contact portion is formed at the contact portion 91 of the band-shaped conductor.
One end of this spring contact part is not bent and is extended straight as it is to form a mounting part 92, and the other end is bent in the opposite direction to the mounting part to form a leg part 93. . As shown in FIGS. 3 and 4, the contact movable operating member 100 has a rectangular parallelepiped main body 1 made of an insulating material.
A plurality of contact support holes 102 are formed at equal intervals on one surface of the main body 101, and guide pieces 103 are provided on both sides of the main body 101 so as to be elastically deformable in the longitudinal direction of the main body 101. First and second engaging step portions 104 and 105 are provided at a predetermined interval on the wall surface of the guide piece 103, for example, on the wall surface facing the main body 101.
are formed, and the engaging step portions 104 and 105 are, for example, trapezoidal and have upper surfaces 104a and 104, respectively.
05a is approximately perpendicular to the guide piece 103, and the lower surfaces 104b and 105b are inclined at an obtuse angle to the guide piece 103, and the second engagement step 105 is closer to the main body than the first engagement step 104. The protrusion length relative to 101 is longer. Note that there are stopper portions 1 on both sides of the main body 101 that protrude downward (toward the board side).
06 is formed. For example, a flexible printed board is made of a foil-like strip-like conductor sandwiched between two plate-like insulators, and the ends of the conductors are exposed from the insulators, as in the conventional case. A connector with such a configuration is used as follows. That is, each contact 90 is supported in the contact support hole 102 of the main body 101 of the contact movable operating member 100 , respectively. Then, lift up the whole body and insert the guide piece 103 into the guide piece insertion hole 82 of the board 80 , and each contact 90
are inserted into the contact insertion holes 81 of the board 80 , and the upper surface 105 of the second engagement step 105
a to engage the lower edge of the guide piece insertion hole 82. In this case, since the guide pieces 103 are elastically deformed with respect to the main body 101, for example, by making the distance between the guide pieces 103 somewhat smaller than the distance between the guide piece insertion holes 82 of the board 80, the engagement step portion 10
4,105 engages the substrate 80 . Therefore,
In this state, the contact 90 is temporarily fixed to the substrate 80 , so the leg portion 93 of the contact 90 and the substrate 80
Solder the contact insertion hole 81 of 0. After that, the exposed conductor part of the flexible printed board is inserted into the spring contact part of the contact 90 , and the second engagement step part 105 of both guide pieces 103 of the contact movable operating member 100 is engaged, and the guide piece 103 is Furthermore, it is sufficient to insert the guide piece into the guide piece insertion hole 82 of the board 80 and engage the first engagement step portion 104 with the edge of the guide piece insertion hole 82 . In this case, the leg portions 93 of the contact 90 are fixed to the board 80 by solder, so the mounting portion 93 of the contact 90
The spring contact portion of the contact 90 and the conductor of the flexible printed board sandwiched therein are brought into firm contact with each other. As a result, it is printed on the back surface of the flexible printed board, the contacts 90 , and the substrate 80 . The patterns are electrically connected together. To release this electrical connection or replace the flexible printed board, expand the lower part of the guide piece 103 of the movable contact operating member 100 to engage the first engagement step 104, and then All you have to do is remove the board or replace it with a new flexible printed board in the same way as above. In this way, the contact movable operating member 100
Since the contact 90 and the flexible printed board are electrically connected to and separated from each other by only the vertical movement of the contact 90, it can be installed in a smaller space compared to a device that slides on the board 80 , and it is also possible to install it in a smaller space than with a device that slides on the board 80. There is no need to provide one, which simplifies the configuration and is economically advantageous. Further, the guide piece 103 of the contact movable operating member 100 has first and second engagement steps 104,
105 is formed, when the contact 90 is soldered, the contact 90 is temporarily fixed by the engagement between the second engagement step part 105 and the guide piece insertion hole 82, and the contact pressure of the spring contact part of the contact 90 is This is obtained when the first engagement step 104 is engaged with the guide piece insertion hole 82, so it is extremely easy to clean the flux applied when soldering.
Further, since the contact 90 does not slide and the contact pressure of the spring contact portion is obtained by the vertical movement of the contact movable operating member 100 , the conductor portion (plug portion) of the flexible printed board is less likely to be damaged. This is particularly effective for printed boards in which circuits are formed by printing silver paste on a film such as polyester or Mylar. Further, since the contact 90 has a structure in which a flexible printed board is inserted, it is possible to connect different pattern conductor ends on both sides of the insulating board, or to utilize only one of them, thereby increasing versatility. However, the connector of the earlier application mentioned above is
It is practically lacking in the following points. A plurality of contact insertion holes 81 are formed in the substrate 80 .
Since guide piece insertion holes 82 are formed on both sides of the connector, it is not possible to form a printed circuit pattern in this area, and the above-mentioned new connector can be used instead of the existing flexible printed wiring connector. Difficult to use. In addition, since engagement steps 104 and 105 are formed on the guide piece 103 integrated with the contact movable operation member 100 , the engagement steps 104 and 105 and the aforementioned guide piece insertion hole 82
It is troublesome to check the engagement state of the board 80 because it is the back surface of the board 80, that is, the surface opposite to the insertion direction of the guide piece 103. For this reason, the present invention is constructed as shown in FIG. 5. In FIG. 5, 110 is an auxiliary member, 120 is a contact movable operating member,
These will be explained below. As shown in FIG. 5, FIG. 6, and FIG. 7, the auxiliary member 110 has engaging pieces 111 that stand up vertically at both ends of an elongated insulating plate 115.
A claw 112 having a substantially triangular cross section is provided at the upper end of the engaging piece 111, and a positioning wall 113 is formed on the back side of each engaging piece 111. and auxiliary member 110
On the bottom surface of the contact movable operating member 1 , which will be described later, is located on one side of the part that connects the engaging pieces 111 on both sides (the part that does not have the positioning wall 113).
A plurality of contact leg insertion grooves 114 are formed so that the leg parts of the 20 contacts fit into each of the contact leg insertion grooves 114. Further, the contact movable operation member 120 has a fifth contact movable operation member 120.
As shown in FIGS. 6 and 8, engagement step portions 122 are formed on both end surfaces of the substantially rectangular parallelepiped insulator 121, respectively, to which the claws 112 of the engagement piece 111 of the auxiliary member 110 can engage and detach. has been done. Further, on one side surface of the insulator 121, a plurality of grooves 123 are formed at equal intervals in the thickness direction, and each groove 123 is formed at equal intervals in the thickness direction.
3 has a nearly U-shaped contact 140 in the center position.
A contact insertion hole 124 is formed so that one end of the contact insertion hole 124 can be inserted and fixed. Note that the partition walls 125 between the grooves 123 are for ensuring creepage insulation distance between the contacts. Furthermore, spacer pieces 126 are formed at both ends of the insulator 121 and extend perpendicularly in a direction opposite to the engaging step portion 122;
Further, a convex protruding wall 127 is formed on the end side of the other side surface of the insulator 121, so that the positioning wall 113 of the auxiliary member 110 can come into contact with the protruding wall 127. The auxiliary member 110 and the movable contact operating member 120 configured as described above are mounted and fixed on the printed wiring board 130 in the following manner. A contact insertion hole 131 is formed in the printed wiring board 130 so that the other end of the contact 140, one end of which is inserted and fixed into the contact movable operating member 120, can be inserted and soldered from the back side. The contacts 140 of the contact movable operating member 120 are inserted into the contact insertion holes 131 of the printed wiring board 130.
Insert the other end and solder the insertion portion of the contact 140. In this state, the auxiliary member 110 is placed on the printed wiring board 130 as shown in FIG. . Then contact 14
The exposed foil-like conductor part of the flexible printed board is inserted between the spring contact parts of 0, and the auxiliary member 110 is engaged with this engagement step part 122 by applying a pressing force to the contact movable operating member 120 in the direction of the printed wiring board 130 . The claws 112 of the pieces 111 are engaged as shown in FIG. 6a. In this state, the exposed foil conductor contacts the spring contact portion of the contact 140 with high contact pressure, and in this state, the claw 112 of the engagement piece 111 of the auxiliary member 110 and the engagement step portion 122 of the contact movable operating member 120 are engaged. It will continue as long as the combination is not broken. In particular, for example, the engagement step 122 and the claw 1 of the engagement piece 111
What is necessary is to insert a screwdriver or the like into the gap between the engagement piece 111 and the engagement piece 111 to expand the claw 112 of the engagement piece 111 outward. As described above, according to the embodiments of the present invention,
Since it is only necessary to form contact insertion holes in the printed circuit board 130 , the area occupied by the printed circuit pattern is not reduced, and the present invention can be easily applied to existing circuit boards. The engagement state between the claw 112 of the engagement piece 111 and the engagement step 122 can also be confirmed by checking the contact movable operation member 12 on the upper surface side of the printed wiring board 130 .
This is easy because it can be done at the 0 end. Needless to say, the drawbacks of the conventional example described above can also be eliminated. It should be noted that the connector of the present invention is not limited to the above-described embodiment, but can be modified as follows, for example. The engaging step portion of the contact movable operating member or the engaging piece of the auxiliary member may have two or more claws. This allows you to change the contact pressure of the spring contact part of the contact, use one of them for temporary fixing, and make the printed board inserted into the spring contact part of the contact a normal rigid printed board. . The shapes of the engaging step portion of the contact movable operating member, the engaging piece of the auxiliary member, etc. can also be changed arbitrarily. It is also possible to protect the exposed portion of the contact by attaching a cover or the like to the contact movable operating member. According to the present invention described above, it is possible to provide a connector that has a simplified configuration, is easy to clean flux, and is less likely to damage the connecting portion of a printed board.

[Brief explanation of drawings]

Figures 1a and b are perspective views and operation explanatory diagrams showing an example of a conventional connector; Figures 2a and b are perspective views showing another example of the conventional connector before and after mounting a printed board; 3 and 4 are an exploded perspective view and a perspective view of the connector of the earlier application currently under development,
FIG. 5 is a perspective view showing only a part of an embodiment of the connector according to the present invention, FIGS. 6a and 6b are partial explanatory views showing the same embodiment in a completed state of assembly and a state in the middle of assembly, and FIG. 7 is a perspective view of the auxiliary member of the same embodiment,
FIG. 8 is a perspective view showing a part of the contact movable operating member of the same embodiment. 110 ...Auxiliary member, 111...Engagement piece, 11
2...Claw, 120 ...Contact movable operating member,
122... Engagement step portion, 130 ... Printed wiring board, 140... Contact.

Claims (1)

[Claims] 1. A printed wiring board on which a plurality of contact insertion holes are arranged, one end of which is fixed to the contact insertion hole of this printed wiring board, and a mounting part at the other end, and a connection between the mounting part and the fixed part. In between, there is provided a contact having a spring contact portion into which the conductor portion of the foil-like insulating plate can be inserted, and a mounting portion of this contact that can be attached and engagement step portions formed on both sides, and a contact with a spring contact portion capable of inserting a conductor portion of the foil insulating plate. a contact movable operating member that applies a pressing force in the direction of the printed wiring board; a central portion thereof is sandwiched between the contact movable operating member and the printed wiring board, and is located at a position corresponding to the engagement step; A connector comprising an auxiliary member extending substantially perpendicularly to the printed wiring board and having an engaging piece that is removable from the engaging step portion.