JP2000003743A - Printed circuit board connector - 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 mounting them in a printed board at a high density, in a connector to be mounted on the printed board by soldering. SOLUTION: A connector 1 for printed board is formed of an insulating housing 9 provided with plural through-holes in which contacts 11 are fit and fixed in plural lines parallel with each other and a contact 11, of which tip is fitted and fixed in each through-hole and of which rear end is fixed to the printed board. In this case, spacers 23 are interposed between lines exposed outside of the contacts 11 for preventing the generation of contacts between adjacent contacts 11.

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. 12, for example, a printed circuit board connector D is used for connecting a package board to a back panel to a cable in a transmission / exchange apparatus. It is mounted on a substrate 8. 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, FIG.
As shown in FIG. 14, in the process of mounting the package female connector 9, which is the connector D for a printed board, which is mounted by soldering to the package board 8, on the printed board, as shown in FIG. Tip 11
a, a large number of contacts 11 are arranged with a small pitch and a high density, and the contact legs 11c are arranged longer in the upper stage. Therefore, as shown in FIG. The contact rear end 11b protruding downward from the alignment plate 22 may collide with the edge and may 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 the printed circuit board mounting connector D in which a large number of contacts are arranged, the contact may be caught on the edge of the through hole of the printed circuit board because of the high-density contact arrangement. There is a problem to be solved in that since the legs of the contacts are elongated in order to align the contacts, the contacts are likely to deform 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. A printed board connector comprising: an insulating housing in which rows are provided in a plurality of stages; and a contact having a front end fitted and fixed in each of the through holes and a rear end fixed to the printed board. That is, a spacer for preventing contact between contacts is appropriately interposed between rows of portions exposed to the outside of the contacts.

The spacers are a plurality of flat plates arranged in parallel so as to be inserted between required contact rows, and are connected to each other at one end in the longitudinal direction of the plurality of flat plates so as to be integrated. A protrusion is provided on a leg portion of the contact, a recess is provided on the spacer corresponding to the protrusion, and the spacer is attached to the contact by fitting the recess on the protrusion. The insulating housing is provided with spacer support members extending in parallel with the contacts from both ends in the longitudinal direction of the housing main body.

According to the printed circuit board connector of the present invention, since the spacer is appropriately interposed between the rows of the required contacts arranged in a plurality of stages, the rear end of the contact is formed in the through hole of the printed circuit board. Even if it gets stuck on the edge of the through hole without penetrating into the through hole, the contact is deformed so that it does not come into contact with the next contact, electrical short circuit is prevented and safety is ensured .

In addition, since the spacer is formed of a plurality of parallel flat plates and integrated at one end thereof, each flat plate of the spacer can be collectively inserted between the contact rows.
Workability is improved. Further, the spacer can be attached by engaging the spacer with the projection of the contact. Since the insulating housing includes the spacer supporting member, the spacer can be stably supported after being inserted between the contact rows, and can strongly resist the deformation force of the contact.

[0012]

Next, a connector for a printed circuit board according to 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.

As shown in FIGS. 1 to 3, a connector A for a printed circuit board according to a first embodiment of the present invention has a plurality of through holes 9a in which the tip portions 11a of the contacts 11 are fitted and fixed. For example, about 50) are arranged side by side to form a row, and the row is formed in a plurality of rows in the vertical direction, for example, 8 rows.
There is an insulating housing 9 provided on the step.

Side walls 9b and 9c as spacer support members extend from both longitudinal ends of the insulating housing 9 in a direction perpendicular to the longitudinal direction. This side wall 9
In b and 9c, through holes 9d of a predetermined shape corresponding to the shape of the spacer 23 described later are provided symmetrically. Further, projections 9e for positioning at the time of mounting on the package substrate 8 which is a printed circuit board are protrudingly provided below both ends of the insulating housing 9.

A contact tip 11a is fitted and fixed to each through-hole 9a of the insulating housing 9 by press fitting, and a contact rear end 11b bent in a direction (downward) perpendicular to the axis of the through-hole 9a. Are inserted into the respective holes 22a of the alignment plate 22 made of synthetic resin, and the contacts 11 are aligned and mounted on the insulating housing 9.

In the contact 11, a tip portion 11a
The leg 11c between the lower end and the rear end 11b is bent substantially at a right angle in the lower row, and the sloping portion becomes longer gradually toward the upper row.

As shown in FIGS. 4 and 5, the alignment plate 22 is provided with a large number of holes 22a in accordance with the arrangement of the contacts 11, and an upper portion of the holes 22a is provided for guiding insertion of the contact rear end 11b. Are expanded or expanded.

Spacers 23 for preventing the contacts from contacting with each other are interposed between the portions of the contacts 11 exposed to the outside from the insulating housing 9, that is, between the rows of the legs 11 c of the contacts 11.

The spacers 23 are, as shown in FIGS. 6 to 9, a plurality of insulative flat plates 23a arranged in parallel so as to be appropriately inserted between required contact rows. At one end in the longitudinal direction of the plurality of flat plates 23a, they are connected to each other by a connecting plate 23b and integrated.

The flat plates 23a are provided in a number corresponding to the number of legs 11c to be inserted between required contact rows that may be deformed. For example, as shown in FIG.
There is no need to insert a spacer between the first to third contact rows at the bottom, since the legs 11c are short and stiff and there is no risk of deformation.

The thickness of each flat plate 23a is set according to the interval between the contact rows. In the first embodiment, the contacts 11 are provided between the third and eighth rows and outside the eighth row.

Furthermore, a small number of small projections 23c are provided on the outer peripheral surface of the connecting plate 23b for locking when the spacer 23 is inserted and fitted into the through hole 9d of the side wall 9c of the insulating housing 9 as required. It is provided.

The spacer 23 is provided with the contact 11 mounted on the insulating housing 9 and the alignment plate 22 fitted on the rear end 11b of the contact to form the side walls 9b and 9 of the insulating housing 9.
c, after being inserted through the through hole 9d of the side wall 9c, each flat plate 23a is interposed between the contact rows,
The distal end of the flat plate 23a is inserted into the through hole 9d of the side wall 9b, locked by the projection 23c of the connecting plate 23b, and attached to the insulating housing 9.

The printed circuit board connector A of the first embodiment configured as described above, when mounted on a printed circuit board such as the package board 8, has a contact rear end of a part of the many contacts 11. Even when the portion 11b collides with the edge of the through hole, the deformation of the leg 11c of the contact is prevented by the interposition of the spacer 23, and there is no possibility of an electrical short.

In this manner, even if the contact 11 collides with the edge of the through hole in the printed circuit board, the contact 11 does not easily deform and exhibits a resistance, so that a mounting defect can be immediately detected. Therefore, it is possible to solve the problem that some of the contacts 11 are mounted in a conventional state while being deformed.

The printed circuit board connector B according to the second embodiment of the present invention differs from the first embodiment in the contacts 12 and the spacers 13 shown in FIG.
As shown in (b), the contact leg 12c is provided with an engagement projection 12d projecting obliquely upward in the figure, and the concave portion 1 fitted and engaged with the projection 12d.
Insulating flat-plate spacers 13 are provided at positions corresponding to the number of contacts 3a in a row.

The length of the spacer 13 in the longitudinal direction is substantially equal to (or slightly shorter than) the length between the inner surfaces of the side walls 9b and 9c of the insulating housing 9. The side walls 9b, 9
No through hole is provided in c.

With such a configuration, after the contacts 11 are mounted on the insulating housing 9 for each row, the spacers 1
3 is fixed via the protrusions 12d, and the mounting of the contacts 11 in the next row in the through holes 9a of the insulating housing 9 is repeated. After that, the alignment plate 22 is attached.

According to the printed circuit board connector B of the second embodiment, only five spacers 13 are required between the third row of contacts 12 and the eighth row of contacts 12, and the deformation of the eighth row is visually confirmed. This is confirmed by:

A printed circuit board connector C according to a third embodiment of the present invention comprises spacers 14, 1 as shown in FIG.
5 is slightly longer than the distance between the inner surfaces of the side walls 9b and 9c of the insulating housing 9, respectively. Then, for example, the spacers 14 are press-fitted between the side walls 9b and 9c in a horizontal state on the contacts 12 in the second row.

Thereafter, the third row of contacts 12 is mounted on the insulating housing 9 and the spacer 15 is press-fitted diagonally above the leg 12c between the side walls 9b and 9c. This is repeated to form the state shown in FIG. Is what you do.

In the printed circuit board connector C according to the third embodiment, the leg 12c of the contact 12 is not provided with a projection as in the second embodiment, and the spacers 14 and 1 are not provided.
5 is held by frictional force due to press-fitting between the side walls 9b and 9c. Further, the deformation of the contacts 12 in the eighth row at the top is visually confirmed.

In the third embodiment, the spacers 14, 15
Are held by the side walls 9b and 9c, so that there is no need to provide a projection for holding the engagement on the leg 12c of the contact 12.

[0034]

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 connector for a printed circuit board, comprising: an insulating housing; and a contact having a front end fitted and fixed in each of the through holes and a rear end fixed to the printed circuit board, the connector being exposed to the outside of the contact. Spacers that prevent the contacts from contacting with each other are appropriately interposed between the rows of parts, and some of the hundreds of contacts collide with the through-hole edge of the printed circuit board and deform, causing electrical This has an excellent effect that the possibility of short-circuit is eliminated.

The spacers are a plurality of flat plates arranged in parallel so as to be inserted between required contact rows, and are connected to each other at one longitudinal ends of the plurality of flat plates to be integrated. Therefore, an excellent effect that the assembling work of the connector is facilitated and the working efficiency is improved is achieved.

[Brief description of the drawings]

FIG. 1 is a right side view (a) and a left side view (b) of a printed circuit board connector according to a first embodiment of the present invention.

FIG. 2 is a front view of the printed circuit board connector according to the first embodiment.

FIG. 3 is a sectional view of the printed circuit board connector according to the first embodiment, taken along the line aa in FIG. 2;

FIG. 4 is a plan view of an alignment plate in the printed circuit board connector according to the first embodiment.

FIG. 5 is a side view in which a part of an alignment plate in the printed circuit board connector according to the first embodiment is partially broken.

FIG. 6 is a plan view of a spacer in the printed circuit board connector according to the first embodiment.

FIG. 7 is a side view of a spacer in the printed circuit board connector according to the first embodiment.

FIG. 8 is a front view of a spacer in the printed circuit board connector according to the first embodiment.

9A and 9B are a plan view (a) and a side view (b) of the printed circuit board connector according to the first embodiment, as viewed obliquely from the spacer.

FIG. 10 is a sectional view of a printed circuit board connector according to a second embodiment of the present invention.

FIG. 11 is a sectional view of a printed circuit board connector according to a third embodiment of the present invention.

FIG. 12 is an explanatory view showing an embodiment of a printed circuit board connector according to a conventional example.

FIG. 13 is a side view of the printed circuit board connector according to the conventional example.

FIG. 14 is a front view of the printed circuit board connector according to the conventional example.

FIG. 15 is a sectional view taken along line bb in FIG. 14;

[Explanation of symbols]

A, B, C, D Connector for printed circuit board, 1 frame,
2 alignment board, 8 package board, 9 insulating housing,
9a through hole, 9b, 9c side wall, 9d through hole, 9e
Projection, 11, 12 contact, 11a, 2a Contact tip, 11b, 12b Contact rear end, 1
1c, 12c leg, 12d protrusion, 13, 14, 15
Spacer, 13a recess, 22 alignment plate, 23 spacer, 23a flat plate, 23b connecting plate, 23c protrusion.

 ──────────────────────────────────────────────────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 BB01 FF01 HH11 5E077 BB31 DD01 JJ18

Claims (4)

[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, wherein a spacer for preventing contact between the contacts is provided between rows of portions exposed to the outside of the contact. A connector for a printed circuit board, wherein The spacer is a plurality of flat plates arranged in parallel so as to be inserted between required contact rows,
The printed circuit board connector according to claim 1, wherein the plurality of flat plates are connected to each other at one end in the longitudinal direction and are integrated. 3. A projection is provided on a leg of the contact, a recess is provided on the spacer corresponding to the projection, and the spacer is attached to the contact by fitting the recess into the projection. The printed circuit board connector according to claim 1, wherein 4. The printed circuit board connector according to claim 1, wherein the insulating housing is provided with spacer supporting members extending from both ends in the longitudinal direction of the housing body in parallel with the contacts.