JP2000003744A - Connector for printed circuit board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of short-circuits in terminals, while preventing the floating of multiple contact terminals at mounting them in a printed circuit board provided 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 provided with plural through-holes 9a in which contacts are fit and fixed in plural stages parallel with each other and each contact, of which tip 13 is fitted to each through-hole 9a of fixation and of which a rear end 13b is fixed to the printed circuit board. In this case, a rear end 13b is provided with a flange 13d, and a deformation preventing body 14 is provided so as to prevent the lifting of the terminals of the contact rear end 13b, while abutting on an upper end surface 13e of the flange 13d.

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. 10, a connector for a printed circuit board has been used for connection of 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, FIG.
As shown in FIG. 12, in the mounting process of the package female connector 9 in which the rear ends 11b of a large number of contacts 11 are soldered to the through holes of the package substrate 8 and positioned by the projections 9e, the mounting is performed. As shown in FIG. 13, the contact tips 11a are inserted into the through-holes 9a, and a large number of contacts 11 are arranged with a small pitch and a high density, and in the upper stage, the contact legs 11c are elongated. In some cases, the rear end 11b of the contact protruding downward from the alignment plate 12 collides with the edge of the through hole of the package substrate 8, and the penetration may not be performed 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. 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. A flange is provided at the rear end of each contact, and a deformation preventing body is provided to contact the upper end surface of the flange to prevent the terminal from floating at the rear end of the contact.

The deformation preventing body is formed in a comb-like shape and is removably installed between both side walls of the insulating housing; and is mounted on the upper surface of the deformation preventing body. In addition, an alignment plate formed in a comb shape orthogonal to the comb teeth of the deformation preventing body and detachably provided between both side walls of the insulating housing is provided.

The gist of the printed circuit board connector according to the present invention is to provide an insulated housing in which a plurality of through holes into which contacts are fitted and fixed are arranged in parallel and form a row, and the rows are provided in a plurality of stages. The tip is fitted into each through hole.
A printed circuit board connector comprising a contact fixed and a rear end fixed to the printed circuit board, wherein a flange is provided at a rear end of each contact, and an upper end surface and side surfaces of the flange are provided. Is provided with a required number of slits, each having a concave groove surrounding the same and through which a contact extending across each step is inserted, also serving as an alignment plate.

According to the connector for a printed circuit board according to the present invention, the deformation preventing body plate abuts on the upper surface of the flange provided at the rear end of the contact, thereby preventing the terminal from moving in the floating direction. Even if the rear end of the contact does not penetrate into the through hole and gets stuck on the edge of the through hole, the deformation of the contact is prevented.

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

[0013] Further, since the deformation preventing member is removably installed between both side walls of the insulating housing, assembly of the connector is facilitated. Further, the comb-teeth-shaped alignment plate orthogonal to the comb teeth of the deformation preventing body prevents the terminal of the connector from being lifted by the deformation prevention body. Of contacts are aligned.

[0014] A required number of slits, each having a concave groove surrounding the upper end surface and the side surface of the flange and through which a contact extending over each step is inserted, are provided in parallel with each other. The movement in the left-right direction is regulated and aligned, and the floating of the terminals of the contacts is reliably prevented.

[0015]

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.

As shown in FIGS. 1 and 2, the printed circuit board connector A according to the first embodiment of the present invention has a plurality of through holes 9a in which the tip portions 13a of the contacts 13 are fitted and fixed. For example, there is an insulating housing 9 in which a plurality of (for example, about 50) rows are arranged in a horizontal direction (hereinafter, referred to as a row direction), and the rows are provided in a plurality of rows, for example, 8 rows in a vertical direction.

Side walls 9b and 9c extend from both longitudinal ends of the insulating housing 9 in a direction perpendicular to the longitudinal direction. As shown in FIGS. 2 and 4 (a), concave portions 9d cut out from the rear end surfaces of the side walls along the extending direction of the side walls are provided on both side walls 9b and 9c in a symmetrical shape. Further, projections 9e for positioning when the connector is mounted on the printed circuit board are projected downward from the lower portions of the side walls 9b and 9c, respectively.

As shown in FIG. 3A, the contact 13 in which the contact tip 13a is fitted and fixed in each through hole 9a of the insulating housing 9 by press-fitting extends rearward from the contact tip 13a. In the lower row, the rear end of the contact is bent in a direction (downward) perpendicular to the axis of the through-hole 9a via the leg 13c which is bent at a substantially right angle and becomes obliquely longer for the upper row. The portion 13b is formed.

A flange 13d is provided in the middle of the contact rear end portion 13b, as shown in FIG. As an example, the flange 13d protrudes in the row direction, but may protrude in the front-rear direction. Further, a flange protruding only on one side may be used.

The shape of the flange 13d is rectangular in the figure, but is not limited to this.
It can be trapezoidal or inverted cone,
The shape is not particularly limited. Further, the collar 13d is
It may be provided integrally with the contact rear end portion 13b or may be fixed separately.

The point is that the presence of the upper end surface 13e of the flange 13d abuts against other members and prevents upward movement opposite to the terminal insertion direction (downward) into the printed circuit board. It is only necessary that the lifting of the portion 13b be prevented.

As shown in FIGS. 2 and 3 (a), a deformation preventing member 14 is provided as an abutting member on the upper end surface 13e of the flange 13d, and an alignment plate 15 is further provided thereon. .

The deformation preventing body 14 is shown in FIG.
As shown in (b), the teeth 14a are formed in a comb shape, and the teeth 14a are provided side by side in the front-rear direction, and are integrated at a base 14b. The width of the teeth 14a is substantially equal to the gap size of the contacts 13 in the column direction.

When the deformation preventing member 14 is inserted into the recesses 9d, 9d of the side walls 9b, 9c from the rear to the front as shown by arrows, and is bridged, the steps between the teeth 14a, 14a in the front-rear direction are formed. Contact rear ends 13b, 13b,
... is fitted. Then, the lower surface of the tooth 14a comes into contact with the upper end surface 13e of the flange 13d at the rear end 13b of each contact.

The alignment plate 15 has a required number of long teeth 15a arranged along the row direction of the contacts 13, and is integrated at its base 15b.

After the deformation preventing member 14 is mounted on the insulating housing 9, the alignment plate 15 is inserted from the concave portion 9d of the side wall 9c toward the concave portion 9d of the side wall 9b along the column direction. The teeth 15a are fitted between the contact rows, and are installed between the side walls 9b and 9c.

FIG. 5 shows a state in which the deformation preventing body 14 and the aligning plate 15 have their teeth perpendicular to each other, the both ends are fitted in the concave portions 9d, and the insulating housing 9 is mounted.
The state shown in the rear view of FIG.

In FIG. 4A, the collar 13d is
If it is provided so as to protrude in the front-rear direction rather than the row direction, the deformation preventing body 14 will be inserted into the upper side later as an alignment plate, and the alignment plate 15 will be inserted into the lower side first as the deformation preventing plate. Will be.

Thus, the flange 1 of the contact rear end portion 13b
3d is prevented from moving upward by the deformation preventing body 14, preventing the terminal of the contact 13 from floating,
The contact rear end 13b is aligned by the orthogonal teeth 14a and 15a.

As shown in FIG. 6, in the printed circuit board connector B of the second embodiment of the present invention, the alignment plate provided between the side walls 9b and 9c is substantially the same as the alignment plate 12 of the conventional example.
Use a. The arrangement plate 12a differs from the arrangement plate 12 in the conventional example in that a concave groove for the flange 13d is provided above the through hole in order to fit the flange 13d of the contact rear end portion 13b. The upper end surface 13e of the flange 13d and the upper surface of the alignment plate 12a are substantially flush.

On the upper surface of the alignment plate 12a, a deformation preventing body 16 having the same comb teeth as the deformation preventing body 14 is inserted in the front-rear direction of the insulating housing 9, and fitted between the side walls 9b and 9c. Thus, the contact rear end portions 13b, 13b,
13b are fitted, and the lower surface of each tooth contacts the upper end surface 13e of the flange 13d to prevent the terminal of the contact 13 from floating. Also according to the second embodiment,
The same operation and effect as those of the first embodiment can be obtained.

The printed circuit board connector C according to the third embodiment of the present invention also serves as a contact arrangement plate as shown in FIG. 7A (however, shown upside down for convenience). A deformation preventing body 17 is formed, and this is
b, 9c.

The deformation preventing member 17 is provided in the insulating housing 9.
A required number of slits 17a are provided together with the contacts 13 extending over each step in the front-rear direction. At the lower part (upper part in the figure) of the slit 17a, a concave groove 17b for surrounding the flange 13d of the contact rear end part 13b is provided.
A required number of contacts 13 are provided in the column direction, and the contacts 13 are provided for each stage.

The opening of the groove 17b is provided with a tapered portion 17c for guiding the insertion of the flange 13d. The upper end face 17d (lower end face in the figure) of the concave groove 17b comes into contact with the upper end face 13e after the flange 13d is inserted.

As shown in FIG. 7 (b), each of the deformation preventing members 17 has locking engaging projections 17e on both side end surfaces in the row direction, which are locking stoppers after being attached to the insulating housing 9. Has been established.

The two engagement projections 17e are shown in FIG.
As shown in (b) and FIGS. 9 (a) and 9 (b), when the deformation preventing body 17 is inserted and mounted from above to below between the side walls 9b and 9c of the insulating housing 9, first, Side walls 9
The side walls 9b, 9c are guided by the tapered portions 9f, 9f of the b, 9c to push out the side walls 9b, 9c outward, and when the insertion operation is further continued, they are dropped into the concave portions 9g of the side walls 9b, 9c. Thus, the deformation preventing member 17 is mounted between the side walls 9b and 9c of the insulating housing 9.

In this manner, the deformation preventing member 17 is
The upper end surface of the groove 7b and the upper end surface 13e of the flange 13d come into contact with each other, so that the upper end surface of the concave portion 9g and the upper end surface 13e of the flange 13d come into contact with each other. Of the terminal due to upward movement of the terminal.

Further, since the flange 13d is surrounded by the concave groove 17b, the movement of the contact rear end 13b in the front-rear direction and the row direction is restricted, and the function as an alignment plate is achieved. According to the third embodiment, it is only necessary to provide the flange 13d at the contact rear end portion 13b and attach the deformation preventing plate 17 between the side walls 9b and 9c, so that the workability is improved.

[0039]

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 of the through holes and a rear end fixed to the printed circuit board. A flange is provided, and a deformation preventing body is provided for abutting against the upper end surface of the flange to prevent the terminal from floating at the rear end of the contact. Movement in the floating direction is prevented, and some of the hundreds of contacts can collide with the through-hole edge of the printed circuit board and deform, eliminating the possibility of electrical shorting due to terminal lifting. In which it exhibits an excellent effect that.

Further, since the deformation preventing member is formed in a comb-like shape and is removably installed between both side walls of the insulating housing, assembly of the connector is facilitated. Furthermore, the comb-teeth alignment plate orthogonal to the comb teeth of the deformation preventing body prevents the terminals of the contacts from floating, and a large number of contacts can be easily aligned by the combination of the deformation prevention body and the alignment plate orthogonal to each other. This is an excellent effect of being performed.

Further, the printed board connector according to the present invention has an alignment plate having a required number of slits, each having a concave groove surrounding the upper end surface and the side surface of the flange and through which a contact extending over each step is inserted. The combined use of the deformation preventing member provides an excellent effect that the contacts are aligned and the terminals of the contacts are reliably prevented from floating.

[Brief description of the drawings]

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

FIG. 2 is a right side view (A) and a left side view (B) of the printed circuit board connector A according to the present invention.

FIG. 3 is a sectional view taken along line aa in FIG. 1 (a).
And (b) an enlarged view of a contact rear end portion.

FIG. 4 is an explanatory view (a) showing an outline of the assembly of the printed circuit board connector A according to the present invention, and an enlarged explanatory view (b) as viewed from the back after the assembly.

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

FIG. 6 is a sectional view (a) and a side view (b) of a printed circuit board connector B according to the present invention.

FIG. 7 is an enlarged perspective view (a) showing a part of a deformation preventing body in the printed circuit board connector C according to the present invention;
FIG.

FIG. 8 is a cross-sectional view (a) and a side view (b) of the connector C for a printed circuit board according to the present invention.

FIG. 9 is a plan view (a) of the printed circuit board connector C according to the present invention and a rear view (b) partially broken away.

FIG. 10 is an explanatory view showing an embodiment of a printed circuit board connector according to a conventional example.

FIG. 11 is a side view of the printed circuit board connector according to the conventional example.

FIG. 12 is a front view of the printed circuit board connector according to the conventional example.

FIG. 13 is a sectional view taken along the line bb in FIG.

[Explanation of symbols]

A, B, C Printed circuit board connector, 1 frame, 8
Package board, 9 Insulated housing, 9a Through hole, 9
b, 9c side wall, 9d concave groove, 9e protrusion, 9f taper part, 9g concave part, 12, 12a alignment plate, 13 contact, 13a contact tip, 13b contact rear end, 13c leg, 13d flange, 13e above flange End face, 14, 16 Deformation preventive body, 14a Tooth, 14b
Base, 15 alignment plate, 15a teeth, 17 deformation preventing body,
17a slit, 17b concave groove, 17c taper part,
17d Upper end face, 17e Engagement projection.

 ──────────────────────────────────────────────────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 AA16 BB22 CC23 CC27 EE12 FF01 GG04 GG08 HH06 HH13 HH19 5E077 BB23 BB31 CC23 CC28 DD01 EE05 GG26 GG27 JJ18 JJ22

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 connector for a printed circuit board comprising a contact fixed and a rear end fixed to the printed circuit board, wherein a flange is provided at a rear end of each contact, and a contact is made with an upper end surface of the flange. A connector for preventing deformation of the terminal at the rear end of the contact. 2. The printed circuit board according to claim 1, wherein the deformation preventing body is formed in a comb-like shape and is detachably mounted between both side walls of the insulating housing. connector. 3. The device is mounted on an upper surface of a deformation preventing body,
3. An alignment plate, which is formed in a comb shape perpendicular to the comb teeth of the deformation preventing body and is detachably provided between both side walls of the insulating housing, is provided. PCB connectors. 4. An insulating 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 flange is provided at a rear end of each contact, and an upper end surface and side surfaces of the flange are provided. A printed circuit board connector characterized by comprising a deformation preventing body which also serves as an alignment plate and has a required number of slits, each having a concave groove surrounding the same and through which a contact extending over each step is inserted.