JP2000003745A - Connector for printed circuit board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of short-circuits in terminals, while preventing the lifting of multiple contact terminals at the time of mounting them in a printed circuit board at high density in a connector to be mounted in the printed circuit board by soldering. SOLUTION: A connector A for printed circuit board is formed of an insulating housing 9 provided with plural through-holes for contacts to be fit and fixed in plural stages parallel with each other and each contact, of which tip is fitted to each through-hole for fixation and of which rear end is fixed to a printed circuit board through each through-hole provided in an alignment plate 14. In this case, the rear end 13b of the contact is provided with an engaging piece 13d to be engaged with the through-hole part of the alignment plate 14 so as to prevent the floating of the terminals of a contact 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector to be mounted on a printed circuit board by soldering, and more particularly, to a high-density floating of a large number of contacts when mounted on a printed circuit board and the terminal associated therewith. The present invention relates to a connector having a structure for preventing a short circuit.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 8, for example, a connector for a printed circuit board is used for connecting a package board to a back panel to a cable in a transmission / exchange apparatus. 8 is implemented. Then, the BP (back panel) male connector 3 attached to the back panel 2 fixed to the back surface side of the frame 1 of the transmission / exchange device is inserted together with the package board 8 from the front side opening and connected. Things.

[0003] On the outside of the frame of the back panel 2,
The rear housing 7 is fixed by the mounting bracket 6, and the male contacts 4 protruding from the BP male connector 3 are inserted into the through holes of the rear housing 7 and protrude into the housing 7. The electric circuit of the package substrate 8 is electrically connected to the cable connector 10 by inserting the cable connector 10 for electrical connection with the cable connector 10.

[0004]

However, as shown in FIG. 9, the rear ends 11b of a large number of contacts 11 are soldered to through holes of the package
In the mounting step of the package female connector 9 which is positioned and mounted at position e, as shown in FIG.
Since the contact tips 11a are inserted into the contact holes 11a, a large number of contacts 11 are arranged at a small pitch and at a high density, and the contact legs 11c are arranged long at the upper stage.
As shown in FIG. 5, the contact rear end 1 protruding downward from the alignment plate 12 is formed at the edge of the through hole of the package substrate 8.
1b may collide and not penetrate normally.

As a result, the contact leg 11c, whose leg is lengthened and whose strength is weakened, is easily deformed,
There is a possibility that the contact may come into contact with another adjacent contact leg and cause an electrical short circuit.

[0006] Even if the terminals are lifted during the mounting of the connector, a large number of the contacts 11 are provided.
Are arranged in multiple stages, and there is a problem that it is difficult for the naked eye to immediately confirm the state of the contact portion between the contacts inside.

As described above, in a connector for mounting a printed circuit board such as a male connector of a package in which a large number of contacts are arranged, the contact may be caught on an edge of a through hole of the printed circuit board because of a high-density contact arrangement.
In addition, there is a problem to be solved in that since the legs of the contacts are elongated in order to align a large number of contacts, the contacts are easily deformed and may be electrically short-circuited.

[0008]

The gist of the present invention for solving the above-mentioned problems of the printed circuit board connector according to the present invention is that a plurality of through holes into which contacts are fitted and fixed are provided in parallel and form a row. An insulating housing in which rows are provided in a plurality of stages, and a contact whose front end is fitted and fixed to each of the through holes and whose rear end penetrates through the through holes of the alignment plate and is fixed to the printed circuit board. In the printed circuit board connector, an engagement piece is provided at a rear end of the contact to engage with a through hole of the alignment plate to prevent the terminal of the contact from floating.

[0009] The engagement piece may protrude to the side of the rear end of the contact and then extend parallel to the rear end.
This includes that the portion protruding from the through hole of the alignment plate is bent.

According to the printed circuit board connector of the present invention, since the engagement pieces of the contacts engage with the alignment plate in the insulating housing, the rear ends of the contacts do not penetrate into the through holes of the printed circuit board, so that the edges of the through holes do not penetrate. Even if it gets caught in the part, the deformation of the contact is prevented.

Accordingly, some of the contacts are mounted while being deformed by being caught by the through holes, and are prevented from coming into contact with other nearby contacts and being electrically short-circuited.

Further, since the engaging piece is bent after being inserted into the through hole of the alignment plate and is engaged with the through hole, a structure resistant to terminal floating is obtained.

[0013]

Next, the present invention will be described with reference to the drawings. Note that, for easy understanding of the present invention, portions corresponding to the conventional example are denoted by the same reference numerals as the conventional example.

A connector A for a printed circuit board according to the present invention
As shown in FIG. 1 to FIG. 5, a plurality of (for example, about 50) through holes 9a in which the tip portions 13a of the contacts 13 are fitted and fixed are provided in parallel to form a row in the horizontal direction. There is an insulating housing 9 whose rows are provided in a plurality of stages in the vertical direction, for example, eight stages.

Side walls 9b and 9c for supporting the alignment plate 14 extend from both longitudinal ends of the insulating housing 9 in a direction perpendicular to the longitudinal direction. Further, a projection 9e for positioning when mounted on the package substrate 8 which is a printed circuit board is protruded below the side walls 9b and 9c.

A contact tip 13a is fitted and fixed to each through hole 9a of the insulating housing 9 by press fitting, and a contact rear end 13b bent in a direction (downward) perpendicular to the axis of the through hole 9a. Are inserted into the holes 14a of the alignment plate 14 made of synthetic resin, and the contacts 13 are aligned and mounted on the insulating housing 9.

The contact 13 has a tip 1
The leg 13c between 3a and the rear end 13b is bent substantially at a right angle in the lower row, and the skew portion becomes longer gradually in the upper row.

At the contact rear end 13b, as shown in FIG. 6, it protrudes to the side and then extends parallel to the rear end 13b and is substantially like a hook with a hook. An engagement piece 13d formed in a fork shape is provided. The engagement piece 13 d is provided in the through hole 14 of the alignment plate 14.
By engaging with a, the contact 13 prevents the terminal 13 from floating when the printed circuit board is mounted.

As shown in FIG. 6, the alignment plate 14 is a flat plate made of synthetic resin, and is attached between the side walls 9b and 9c of the insulating housing 9.

A large number of holes 14a are provided in the flat plate in accordance with the arrangement of the contacts 13. The hole 14
As shown in FIG. 6, a has a through hole 14b for the contact rear end 13b and a through hole 14c for the engagement piece 13d. The width of these holes and the thickness in the direction perpendicular to the width are substantially equal to the width and thickness of the contact rear end portion 13b to be inserted.

A recess 14 is formed below the hole 14a.
d is provided. The engagement piece 13d protrudes into the space of the recess 14d. On the other hand, the upper part 14e of the hole 14a is expanded or expanded for insertion guide of the contact rear end part 13b.

Since the contacts 13 and the alignment plate 14 are formed as described above, in assembling the printed circuit board connector A, as shown in FIG. 13a are press-fitted and fitted respectively, the holes 14a of the alignment plate 14 are inserted through the contact rear ends 13b and the engagement pieces 13d, and the alignment plate 14
Is attached between the side walls 9b and 9c.

Then, the tip of the engaging piece 13d protruding from the recess 14d of the alignment plate 14 is bent using a bending jig. Thus, the engagement piece 13d does not protrude from the lower surface of the alignment plate 14 and does not adversely affect the mounting operation on the printed circuit board.

Thus, the engagement piece 13d of the contact 13
Are engaged with the through holes 14a, so that when the printed circuit board connector A is mounted on the printed circuit board, even if the contact rear end portion 13b collides with the edge of the through hole of the printed circuit board, the floating is prevented. Being contact leg 1
3c is prevented from being deformed, and there is no possibility of electrical short-circuit.

Therefore, even if the contact 13 collides with the edge of the through-hole in the printed circuit board, the contact 13 does not easily deform and exerts a resistance, so that a mounting defect can be immediately detected. Therefore, it is possible to solve the problem that some of the contacts 13 are mounted in a conventional state while being deformed.

[0026]

As described above, in the printed circuit board connector according to the present invention, a plurality of through holes into which the contacts are fitted and fixed are arranged in parallel to form a row, and the rows are provided in a plurality of stages. A printed circuit board connector comprising: an insulating housing; and a contact having a front end fitted and fixed in each through hole and a rear end penetrated through the through hole in the alignment plate and fixed to the printed circuit board. At the rear end of the contact, there is provided an engagement piece that engages with the through hole of the alignment plate to prevent the terminal of the contact from floating. This has an excellent effect that it can be deformed by colliding with the edge of the through hole of the printed circuit board and the possibility of electrical short-circuit due to terminal floating can be eliminated.

The engaging piece extends laterally from the rear end of the contact and then extends in parallel with the rear end. Since the portion protruding from the through hole of the alignment plate is bent, the engaging piece is engaged. This has an excellent effect that the resultant force is strong and terminal lifting is reliably prevented.

[Brief description of the drawings]

FIG. 1 is a front view of a printed circuit board connector according to the present invention.

FIG. 2 is a sectional view taken along the line aa in FIG.

FIG. 3 is a plan view of the printed circuit board connector according to the present invention.

FIG. 4 is a rear view of the printed circuit board connector according to the present invention.

FIG. 5 is a side view of the printed circuit board connector according to the present invention.

FIG. 6 is an explanatory view schematically showing a rear end portion of a contact and a fitting state of an engagement piece and an alignment plate in the printed circuit board connector according to the present invention.

FIG. 7 is an explanatory view schematically showing a state in which the engagement piece of the contact is bent in the printed circuit board connector according to the present invention.

FIG. 8 is an explanatory view showing an embodiment of a printed circuit board connector according to a conventional example.

FIG. 9 is a side view of the printed circuit board connector according to the conventional example.

FIG. 10 is a front view of a printed circuit board connector according to the conventional example.

FIG. 11 is a sectional view taken along the line bb in FIG. 10;

[Explanation of symbols]

A Connector for printed circuit board, 1 frame, 8 package board, 9 insulating housing, 9a through hole, 9b, 9c
Side wall, 9e protrusion, 12 alignment plate, 13 contact, 13a contact tip, 13b contact rear end, 13c leg, 13d engagement piece, 14 alignment plate,
14a hole, 14b hole for contact rear end, 14c
Hole for engaging piece, 14d recess, 14e Upper part of hole 14a.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Fumio Aoki 4-1-1, Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Prefecture Inside Fujitsu Limited (72) Hideaki Terauchi 4-1-1, Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa No. 1 Fujitsu Limited F term (reference) 5E023 AA04 AA13 AA16 BB22 CC23 CC27 EE12 FF01 GG06 HH06 HH13 HH19 5E077 BB23 BB31 CC23 DD01 EE04 GG26 GG27 JJ18 JJ22

Claims (2)

[Claims] An insulated housing in which a plurality of through holes into which contacts are fitted and fixed are provided in parallel and form a row, and the rows are provided in a plurality of stages. A printed circuit board connector comprising a contact fixed and a rear end fixed to the printed circuit board through a through hole of the alignment plate, wherein the rear end of the contact is formed in a through hole portion of the alignment plate. A printed board connector, comprising: an engagement piece that engages to prevent the terminal of the contact from floating. 2. The engaging piece is extended in parallel with the rear end after projecting to the side of the rear end of the contact, and the part protruding from the through hole of the alignment plate is bent. The printed circuit board connector according to claim 1, wherein: