JPH0412622Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a connector for connecting a flat cable to a printed wiring board.

<Prior art> Due to the arrangement of terminals on a printed circuit board, flat cable connectors have parallel rows of terminals, with cable terminal No. 1 starting from the end of one row and cable terminal No. 2 at the end of the other row. A standard terminal arrangement type in which terminals, cable terminals No. 3, etc. are arranged alternately in the second row on the No. 1 terminal side (Fig. 5 a, b), and conversely, No. 1, No. 2 cable terminals from the other row... ...Since there are two types of arrays, the reverse row terminal array type (FIGS. 6a and b) arranged alternately, two types of bases or contacts are required. Precision molds are required to mold such bases and contacts, which is one of the causes of increased costs of connectors. A device disclosed in Japanese Utility Model Application Laid-open No. 152779/1983 has been proposed as a device that can be used both as a standard array type and a reverse array type.

As shown in FIGS. 10 to 11, the above-described idea is that the fixing through holes 41 of the contacts 5 arranged in a row on the base 4 are formed in the shape of a square, while the lower side of the contact 5 has a contact with a square cross section. 51 (Figure 7),
In the standard arrangement type, the contacts 51 are press-fitted into the through-holes 41 in one row from the center to one side, and in the other row, the front and back surfaces of the contacts 5 are changed and the contacts 51 are press-fitted into the through-holes 41 on one side that is symmetrical to the tip. In the case of the reverse arrangement type, the initial purpose is achieved by changing the contacts 5 on both sides to the front and back, respectively, and making the press-fitting position of the contact 51 into the through hole 41 symmetrical to that of the standard arrangement type.

<Problems to be solved by the invention> However, the conventional contact has a base of 4
When the contact 5 is press-fitted into the base 4, only the contact 51 protrudes from the base 4, as shown in FIG. 8, and a special support jig 6 is required to prevent the contact 5 from protruding. . Moreover, when the connector is mounted on the printed wiring board 7 as shown in FIG. 9, a predetermined insulation distance L is required between the conductive pattern 71 on the board 7 and the contacts 5, which causes problems in the mounting work and mounting space. arise. Further, since the contact 51 of the contact 5 requires bending, the molds for the contact 5 and the base 4 become complicated, leading to problems such as an increase in mold cost.

Therefore, the present invention includes an engagement groove for aligning and supporting the contacts in the base, a through hole corresponding to the terminal row of the wiring board at the bottom of the engagement groove, and a row of fixing holes between the adjacent through holes. The contact has a contact piece and a fixing piece that is parallel to the contact piece and spaced at 1/2 the distance between the terminal rows. It is an object of the present invention to provide a novel connector that does not require a complicated mold and can be used as both a standard arrangement type and a reverse arrangement type by selecting and press-fitting either of the fixing holes on both sides of the connector.

<Means for solving the problems> The structure of the present invention to achieve the above purpose is as follows:
This will be explained using FIGS. 1 to 4 corresponding to the embodiment.

The connector of the present invention has a large number of through holes 12 at the bottom of the engaging groove 11 in which the contacts 2 align and engage, corresponding to the terminal spacing of the printed wiring board, and a fixing hole 13 at the midpoint of the adjacent through holes 12. Lined base 1
It has a dividing groove 22 at one end, a contact piece 24 and a fixing piece 25 parallel to the contact piece 24 at the other end, the contact piece 24 is inserted into the through hole 12, and the fixing piece 25 is inserted into the through hole according to the terminal arrangement. The contact 2 is press-fitted into the fixing hole 13 on one side of the contact 12, and the cover 3 is removably fitted to the base 1 and has an engagement groove 31 for engaging and holding the protruding portion of each contact 2. This is what happens.

<Function> According to the above configuration of the present invention, the base 1 and the contacts 2 have the same shape in the standard arrangement type and the reverse arrangement type, and are molded with a single mold.

The contacts 2 can be press-fitted into the base 1 by selecting the contact piece 24 into the through-hole 12 and the fixing piece 25 into either of the fixing holes 13 on both sides of the through-hole 12 depending on the terminal arrangement type. type and reverse array type connectors are obtained.

<Example> The present invention will be specifically described below based on an example shown in the drawings.

In the drawing, the flat cable connector includes a base 1 that aligns and fixes contacts, contacts 2 that are press-fitted into the base 1, and a cover 3 that is fitted onto the base 1 and engages and holds the upper part of the contacts 2. configured.

The base 1 is a molded body of a synthetic resin material, and has two engaging grooves 11 formed therein at the interval between the terminal rows of the printed wiring board. This engagement groove 11 has a groove width and an appropriate depth according to the plate thickness of the contact 2, and the groove bottom has a large number of through holes 12 that penetrate from the front and back sides with the terminal spacing of the board, and adjacent A large number of fixing holes 13 parallel to the through holes 12 are arranged in a row in the middle of the through holes 12.

The contact 2 is a punched and molded body made from a metal plate, and has a split groove 22 for cable connection in the center of the contact body 21, and a tapered cutting part 23 for cutting the cable coating at the upper opening of the split groove 22. At the same time, the lower part of the main body 21 has a contact piece 24 of an appropriate length at one end, and a fixing hole 2 at the other end parallel to the contact piece 24 and having a length that matches the fixing hole 13 of the base 1.
5 is integrally formed at the same time as contact punching. The contact piece 24 and the fixing piece 25 are set at symmetrical positions with respect to the center line of the split groove 22, and are made to match the distance between the through hole 12 and the fixing hole 13 of the base 1.
In addition, the shaft portions of the contact piece 24 and the fixed piece 25 include
Wedge-shaped retainers 26 protruding from both sides are formed to strengthen the press-fit fixation into the through hole 12 and fixing hole 13.

The cover 3 is a molded body made of a synthetic resin material similar to the base 1, and has the engagement groove 11 of the base 1 on the inner surface.
An engaging groove 31 of the same width and appropriate depth with which the upper part of the contact 2 engages is recessed correspondingly, and an engaging portion 32 that engages and disengages with each other is provided at both ends of the cover 3 and the base 1. A receiving portion 14 is formed.

In addition, on the abutting surfaces of the cover 3 and the base 1,
Recesses 33 are formed in a wavy shape at intervals of 1/2 the distance between the terminals and matched to the curvature of the cable sheathing, so that the sheathing of the connection cable is held between the base 1 and the cover 3.

<Effects of the invention> As described above, the present invention has a large number of through holes 12 at the groove bottom of the engaging groove 11 in which the contacts 2 are aligned and engaged, corresponding to the terminal spacing of the printed wiring board, and a plurality of through holes 12 between adjacent through holes 12. Base 1 with fixing holes 13 lined up at points
It has a dividing groove 22 at one end, a contact piece 24 and a fixing piece 25 parallel to the contact piece 24 at the other end, the contact piece 24 is inserted into the through hole 12, and the fixing piece 25 is inserted into the through hole according to the terminal arrangement. A connector is formed by a contact 2 that is press-fitted into a fixing hole 13 on one side of 12 and a cover 3 that is removably fitted to the base 1 and has an engagement groove 31 that engages and holds the protruding portion of each contact 2. Because of this configuration, the base 1 and the contacts 2 have the same shape in both the standard arrangement type and the reverse arrangement type, and can be formed using a single mold, reducing the mold cost by half and reducing the cost of the connector.

Moreover, the contact 2 is press-fitted into the base 1 by inserting the contact piece 24 into the through hole 12 and placing the fixing piece 25 into the fixing holes on both sides of the through hole 12 depending on the terminal arrangement type.
By selecting and press-fitting any one of 3, standard arrangement type and reverse arrangement type connectors can be easily assembled.

Moreover, since the contact 2 is formed by punching from a metal plate, it does not require a huge amount of expense for a press mold, and the press-fit fixation is strengthened by press-fitting the contact piece 24 and the fixing piece 25 at two places, which prevents horizontal vibration. There is no risk of such. Furthermore, since the contact piece 24 only protrudes from the back side of the base 1, unlike the conventional common type, there is no need for a jig to prevent the contact from protruding during press-fitting, and the insulation distance between the contact and the wiring board can be reduced. It has many practical effects that solve problems such as these all at once.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of the connector according to the present invention, Fig. 2 is a sectional view of the standard arrangement type, Fig. 3 is a sectional view of the reverse arrangement type, Fig. 4 is a perspective view of the cover, and Fig. 5
6 and 6 are diagrams showing the relationship between a printed wiring board, a connector, and a cable, and FIGS. 7 to 11 are diagrams showing a conventional example. 1...Base, 11...Engagement groove, 12...Through hole, 13...Fixing hole, 2...Contact, 22...
...Groove, 24...Contact piece, 25...Fixing piece, 3...
...Cover, 31...Engagement groove.

Claims (1)

[Claim for Utility Model Registration] The groove bottom of the engagement groove in which the contacts are aligned and engaged has a large number of through holes corresponding to the terminal rows of the printed wiring board.
and a base in which a fixing hole is arranged in a row at the midpoint of the adjacent through holes, a split groove at one end, a contact piece and a fixing piece parallel to the contact piece at the other end, the contact piece is placed in the through hole, and the fixing piece is arranged in parallel to the contact piece. A contact is press-fitted into a fixing hole on one side of the through-hole according to the terminal arrangement, and a cover is removably fitted to the base and has an engagement groove that engages and holds the protruding portion of each contact. A flat cable connector comprising: The connector for a flat cable according to claim 1, wherein the contact is a punched-molded body using a flat conductor plate. The contact piece and the fixing piece are set at symmetrical positions with respect to the center line of the groove.
Connector for flat cable as described in section.