JP2511926Y2 - Plug type connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a plug-type connector for connecting two printed circuit boards to each other, a so-called board-to-board connector.

B. Conventional Technology A conventional board-to-board connector is a type that does not use a flexible conductor and is a stacking type connector in which two printed circuit boards are stacked and connected to each other, or they are perpendicular to each other. There is a right-angle type connector that connects two printed circuit boards located in each other to each other, or a rotary type connector that connects two printed circuit boards in a hinged manner. As a type to be used, one end of a plurality of flexible strip conductors formed by pressing a metal conductive material is soldered to a through hole of a printed circuit board, and the other end is a plug type. There is known a detachable connector as the connector.

In the type using the flexible conductor described above, since the through holes of the printed circuit board on the side where the strip conductors are soldered are provided in two rows in a zigzag pattern, the solder tails of each strip conductor are provided in two rows. The strip conductors on the side that will be plug-type connectors must be lined up in one row, so the spacing between the strip conductors (pitch between plug terminals) must be the pitch of each row of solder tails. It is half the pitch. This is because it is necessary to match the pitch of the receptacle terminal of the mating receptacle type connector.

C. Problems to be Solved by the Invention With the recent miniaturization of electronic devices, miniaturization of connectors is desired. In a connector of the type using a flexible strip conductor, in order to give the strip conductor sufficient flexibility, the thickness of the strip conductor must be thin, and on the other hand, the strip conductor The end of the connector must have a structure that has the rigidity required for insertion / removal so as to serve as a solder tail that is inserted into a through hole of a printed circuit board and a plug terminal of a plug type connector. For this reason, there is a method of solving the requirement of the trade-off by using a so-called profiled material in which the thickness of the end portion is thick and the thickness of the intermediate portion is thin. On the other hand, in a strip conductor made of a metal or conductive material of uniform thickness that satisfies the requirements of flexibility, it is recessed in the longitudinal direction of the strip as an end for the solder tail (gutter). The groove portion) provides the strength of the solder tail, and as the end portion for the plug, a member that is folded and adhered in parallel with the longitudinal direction of the strip is formed to form the plug connector. Some have given strength.

The use of the former profile material has a difficulty in reducing the price of the connector, and the latter method requires a large width of metal or material, and in the case of a small connector with narrow pitch,
Pressing is not easy, and since the boundary between the die and the strip contains a curved line by folding, when molding the insulator block integrally molded at the end of the strip conductor,
There is a weak point that the plastic material is easily burred at the boundary between the strip and the block, which causes a problem of poor contact of the plug connection.

An object of the present invention is to provide a small plug-type connector for board-to-board that overcomes the above-mentioned problems.

D. Means for Solving the Problems The board-to-board multi-pole connector of the present invention is provided with a plug-type connector at one end of a flexible strip conductor and a solder tail at the other end. Board provided
In a two-board connector, bend all conductor ends of the flexible strip conductors on the plug-type connector side in a direction perpendicular to the longitudinal direction of the strips so that the strip conductors are in close contact with each other. A connector is formed, and the outermost end of the strip conductor is integrally molded in an insulator block in a zigzag shape.
A plug-type connector for a printed circuit board, comprising at least one short-circuit-preventing insulator block integrally fixing a strip conductor between the plug-type connector and the solder tail.

E. Embodiment FIG. 1 shows a plan view of an embodiment of the board-to-board connector of the present invention, and FIG. 2 shows a sectional view taken along the line I--I of FIG. . In the figure, reference numeral 1 indicates an insulator block of the plug-type connector 10.
Shows a holding insulator block for holding the solder tail. The insulator blocks 1 and 2 are integrally molded with the strip conductors at the ends of the plurality of flexible strip conductors 3 by an insulating material such as plastic. FIG. 4 is a partial perspective view showing a part of the plug-type connector 10 of the connector of the present invention in a cutaway manner, and FIG. 5 is a partial cutaway view of a solder tail and an insulating block for holding. FIG. In this embodiment, the solder tail has two different shapes and is therefore designated by reference numerals 5 and 6, which will be described later. The parts common to the illustrated embodiments are designated by the same reference numerals to avoid redundant description.

FIG. 3 is a view showing a state in which a continuous body of an electric conductor portion used in the connector of the present invention is punched out from a metal material by a pressing machine. In one embodiment of the present invention, the metal material is 0.15 millimeters of uniform thickness phosphor bronze, the width of the plug connector 4 is 0.8 millimeters, and the center spacing of the plug connector portions 49 relative to each other (ie The pitch of the plug-type connector is 1.25 mm. Opposite the plug connector part 49, the solder tail parts 59 and 69
Is punched out, and the tip portion of the solder tail portion 69 is connected to the carrier 41 by the joint portion 45. Since the pitch of the plug connector portion 49 is too small, it is difficult to provide one pilot hole 42 of the carrier 41 for each plug connector, so that the solder tail portion in the middle portion of the pilot hole 42 is difficult. 59 is the carrier 41
It should be noted that the fact that it is not connected to is part of the features of the present invention. Also, the solder tail part 69
Note that is bent in the longitudinal direction and provided with the groove 31.

Plug connector part 49 and solder tail part 59, 69
The strip conductor portion 44 between and is provided with a connecting portion 43, and accordingly, the strip conductor at this stage (about 0.
5 mm wide) are integrally continuous. Next, the solder tail portion 69 is cut off at the joint portion 45 and separated from the carrier 41. Further, in order to make one group the number of plug connector portions necessary for the number of poles of the connector, The boundary connecting part 43 is cut off,
The material for the electrical conductors of the tow board connector is made.

Next, the plug connector portion 49 is bent in a direction perpendicular to the longitudinal direction of the strip conductor portion 44, that is, along the line XX in FIG. 3, to bring the mutual surfaces into close contact. As a result, the plug connector 4 having increased strength is formed. In the same process, the part 59 of each solder tail is
The same bending process is applied to the portion of (1) to form the solder tail 5 having increased strength. The solder tail portion 59 is then spaced apart from the face of the solder tail portion 69 to align with the 2.5 mm pitch through hole of the printed circuit board (not shown), see FIG. It is bent at the positions indicated by the numbers 51 and 52.

In the next step, in order to form the plug-type connector 10 at one end of this electric conductor portion and the solder tail supporting portion 2 at the other end, the insulator blocks 1 and 2 are formed by the plastic insulating material. Is integrally molded with the electric conductor part.
In this case, the tip end portion 46 (see FIG. 4) in which the bent plug connector portion 49 is overlapped and brought into close contact with each other and the tip end portion 47 of the solder tail portion 59 are located inside the respective insulator blocks 1 and 2. Must be included in (4th
(See Figures and 5). Also, as can be seen from FIG. 4, the plug-type connector 10 has only the straight line at the boundary between the bent plug connector 4 and the molding die, so that the insulator block 1 and the plug connector are connected. No plastic burrs are formed at the boundary with 4, and the performance of the plug-type connector is not impaired.

In this injection molding process, it is preferable to provide short-circuit preventing insulator blocks 8 and 9 (FIG. 1) at intervals of about 5 to 6 mm depending on the length of the flexible strip conductor. The insulator blocks 8 and 9 are means for preventing the flexible strip conductors from contacting each other after the connecting portion 43 is cut off. The distance between the flexible strip conductors is small,
In the case of a device that uses a small and long multi-pole boat toe board connector, and when the device is manually tested while being energized or repaired, a short circuit between flexible strip conductors may occur. Therefore, the provision of at least one short-circuit-preventing insulator block is effective for small multi-pole board-to-board connectors in order to avoid such accidental short-circuit accidents. It becomes a means. Finally, a connecting portion for connecting the strip conductor portion 44 shown in FIG.
43 By stripping off everything, the strip conductor part 44
Are separated into electrically independent flexible strip conductors 3 to complete the multipolar connector shown in FIGS. 1 and 2.

Further, in order to facilitate the movement of the printed circuit boards after the connectors of the present invention are attached to each other, as shown in FIG. 2, the flexible strip conductor 3 has a short-circuit prevention insulator block. It is preferable to bend so as to form a chevron shape in the vicinity of 8. Further, for example, by providing a pore 7 penetrating each strip conductor on one surface of an insulator block 9 for short circuit prevention, and inserting the tip of a circuit test probe into this pore 7, When testing a one-conductor circuit, it is possible to easily perform a test without causing a short circuit accident between the probe and the adjacent conductor. In addition, if the plug connector portion bent according to the present invention is heat-treated before the insulating block 1 is molded by using a material of a metal material to which solder plating is applied in advance, the plug connector can be The strength can be further increased.

F. Effect of the Invention As described above, the multi-pole connector for board-to-board of the present invention provides sufficient flexibility to the strip of the connecting conductor without using a deformed material, and further, plug connection. (EN) Provided is a multipolar connector which allows a child to have sufficient strength, prevents accidental short circuit between flexible conductor strips juxtaposed with each other with a small mutual spacing, and is extremely simple and inexpensive to manufacture.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the plug-type connector of the present invention,
FIG. 2 is a sectional view of the plug-type connector taken along the line I-I shown in FIG. 1, and FIG. 3 is a continuum of conductors used in the plug-type connector of the present invention held by a carrier. Fig. 4 is a plan view showing a state, Fig. 4 is a partial perspective view showing a portion of the plug connector, and Fig. 5 is a partial perspective view showing a portion of the solder tail and an insulating block for holding the same. is there. 1 ... Insulator block for plug type connector, 2 ... Insulator block for holding solder tail, 3 ... Flexible strip conductor, 4 ... Plug connector, 5,6 ... Solder tail, 8, 9 …… Insulator block for short circuit prevention, 10 …… Plug type connector, 41 …… Carrier, 49 …… Plug connector part, 59,69 …… Solder tail part.

Claims (1)

(57) [Scope of utility model registration request] 1. A plurality of flexible strip conductors juxtaposed to each other and a solder tail formed at one end of the plurality of flexible strip conductors are provided in through holes of one printed circuit board. Insulator block for solder tail integrally formed with the plurality of flexible strip conductors to hold the flexible strip conductors on the other end of the flexible strip conductors. In order to hold the plug connector of the plug-type connector, which is inserted into and out of the corresponding receptacle terminal of the receptacle-type connector provided on the other printed circuit board, in one row, In a plug-type connector comprising a plug-type connector insulator block integrally molded with a strip conductor, (a) a solder tail formed at one end of the flexible strip conductor is printed on one of the prints. Circuit board pair In order to be inserted into the corresponding through hole and soldered, the zigzags are juxtaposed in a plurality of rows and are fixed by the insulator block for the solder tail. (B) The plug connector of the plug type connector has a tip. A connecting surface is formed by bending and superposing the portions so as to be in close contact with each other, and the fracture surface of the outermost end of the flexible strip conductor is embedded and fixed in the insulator block for the plug-type connector. At least one insulating block for short-circuit prevention is provided by integrally fixing a plurality of flexible strip conductors interposed between the plug-type connector and the insulating block for the solder tail. Plug type connector.