JP2571370Y2 - Connection structure between printed board and connector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure between a printed board and a connector for mounting and fixing a printed board mounting connector to the printed board.

[0002]

2. Description of the Related Art A conventional connection structure between a printed board and a connector is as follows. First, a space 3 is provided in portions of overhang portions 2 formed on both sides of an insulating housing 1 shown in FIG. , 2 are provided with mounting brackets (not shown), and the connectors are mounted on the printed board 4 by the mounting brackets. Second, a projection made of an insulating material provided integrally with the insulating housing is inserted into a through hole of the printed board, and printed. Thirdly, the connector is fixed to the printed board by heat-tightening the projection on the back side of the board. Thirdly, a springy projection 6 implanted in the insulating housing 5 shown in FIG.
To fix the connector to the printed board 7 by press-fitting.

[0003]

However, in the first coupling structure, the projecting portions 2, 2 are provided on both sides of the insulating housing 1.
Is formed, the extra space 3 is required on the surface of the printed board 4, and there is a problem that the mounting density of the connector does not increase. In the second structure, an extra man-hour is required for heat caulking. In addition to the above, there is a problem that a dedicated jig is required. In the third connection structure, the connector can be temporarily fixed to the printed board 7 by the spring protrusions 6, but the fixing strength is insufficient. there were.

SUMMARY OF THE INVENTION In view of the above problems, the present invention has an object to improve the mounting density of a connector, and to provide a printed board capable of obtaining a sufficient fixing strength without requiring an extra man-hour and a special jig. To provide a coupling structure between a connector and a connector.

[0005]

In order to achieve the above-mentioned object, the present invention provides an insulating housing, in which a plurality of contact pieces of contacts are accommodated, is brought into contact with a printed board surface. In the joint structure of a printed board and a connector for mounting the connector on the printed board , a plurality of bosses are provided on the mounting contact surface of the insulating housing at intervals within a range where the contact piece is accommodated. Thickness
And the boss has a length approximately equal to
Each protruding bracket is fixed, and the plurality of
Comprising a plurality of through-holes for soldering opened in accordance with the spacing of the bosses and the projecting bracket, its a plurality of bosses and projecting bracket
Each Re and inserted into the corresponding said through hole, before the projecting bracket
Solder to the through hole at the same time as soldering the contact
The connector is fixed to the printed board, and a gap is secured between the boss and the through hole,
When the connector is soldered to the printed board,
Fixing protruding metal fittings drilled in the boss by the heat of the raised solder
Press-fitting hole is melted and deformed and is pressed into the press-fitting hole.
The protruding metal fitting is firmly fixed to the boss;
Position the end surface perpendicular to the mounting contact surface of the
Be sure to set it according to 1/2 of the arrangement pitch of the contact pieces.
And

[0006]

According to the first aspect of the present invention , a plurality of bosses are provided on the mounting contact surface of the insulating housing at intervals within a range where the contact pieces are accommodated, and the thickness of the printed board is reduced.
The bosses are almost the same length and
A protrusion is fixed, and the printed board is provided with the plurality of buttons.
Comprising a scan and a plurality of through-holes for soldering opened in accordance with the spacing of the projecting bracket, it the plurality of bosses and projecting bracket
It is inserted into the through-hole corresponding to, respectively, the said projecting brackets
Since the connector is fixed to the printed board by soldering to the through hole at the same time as the soldering of the contact , the connector is fixed only by soldering without the need to protrude parts on both sides of the insulating housing. improving Then door packing density
In addition, a through-hole with a length approximately equal to
The studs are inserted so that the protruding brackets are stably supported
This eliminates the need for extra man-hours and dedicated jigs.
You. Also, a gap is secured between the boss and the through hole,
The heat of the solder rises and the press-fit hole melts and deforms.
Sufficient fixing strength to the boss of the protruding metal fitting is obtained, and the position of the end face perpendicular to the mounting contact surface of the insulating housing is set to be equal to half the arrangement pitch of the contact pieces. Thereby, the mounting density of the connector can be further improved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings, taking a socket side connector as an example. FIG. 1 is a partially cutaway side view showing a main part of a connection structure between a printed board and a connector according to an embodiment of the present invention.
Is a front view showing the connector before attaching to the printed board,
FIG. 3 is a plan view thereof.

The connection structure of the printed board and the connector on the socket side according to this embodiment is such that the contact piece 22 of the socket contact 21 is provided on the mounting contact surface 11 a of the insulating housing 11.
A plurality of protruding metal fittings 31 are fixed at intervals in the range of the portion in which the plurality of protruding metal fittings 31 are accommodated. A through hole 43;
And the connector is fixed to the printed board 41 by soldering the protruding metal fittings 31 to the through holes 43, and is perpendicular to the mounting contact surface 11a of the insulating housing 11. The two end faces 1
The position of 1b is set in accordance with １ ／ of the arrangement pitch P of the contact pieces 22.

The insulating housing 11 is provided with the insertion holes 13 arranged in a grid-like matrix of 4 rows and 48 columns, and the contact pieces 22 of the respective socket contacts 21 are press-fitted into each of the insertion holes 13 and accommodated therein. The lower surface closer to the rear side is a mounting contact surface 11a, and the mounting contact surface 11a is in contact with the plate surface of the printed board 41.

[0010] As shown in FIG.
The small projections 14 having a diamond-shaped cross section and the bosses 15 having a circular cross section are arranged at equal intervals on the same straight line on the mounting contact surface 11a, and two small projections 14 and one boss 15 are alternately arranged. One small projection 14 is arranged only at a position closest to both end faces 11b. The boss 15 is printed as shown in FIG.
Mounting contact surface 11 having a length substantially equal to the thickness of
a. The insulating housing 11 has a flat lower surface 11d located slightly above the mounting contact surface 11a closer to the front side with a small step 11e interposed at a middle position in the front-rear direction of the lower surface. The small projection 14 has a tapered lower end and is formed in the insulating housing 11.
When the insulating housing 11 is mounted on the printed board 41, the insulating housing 11 is pressed into a small through hole (not shown) of the printed board 41 to position and temporarily fix the insulating housing 11.

The position of both end faces 11 b perpendicular to the mounting contact face 11 a of the insulating housing 11 is determined by the arrangement pitch P of the contact pieces 22 of the socket contact 21, that is, the insertion hole 13.
As shown in FIG. 2, a dimension L from the center line of the insertion holes 13 at both ends is adjusted to match the arrangement pitch P of the insertion holes 1.
In this case, the arrangement pitch P is exactly 配 列 of the arrangement pitch P. A plurality of support projections 16 are provided on the lower surface on the front side of the insulating housing 11 so as to be shifted from the boss 15 at the same pitch as the boss 15. The lower surface of each of the support protrusions 16 has a protruding metal fitting 31 and a leg 23 a of the socket contact 21.
The size of the downward projection is set so as to be substantially flush with the lower end of the.

The insulating housing 11 has an upper surface 11c.
The narrow ridge 17a and the wide ridge 17b along the front-rear direction
Are alternately arranged and integrally formed. This narrow ridge 17
a and the wide ridge 17b are fitted into concave ridges formed in an insulating housing of a mating connector (not shown) which is fitted with the socket-side connector, and cannot be inserted at a position just shifted from each other by an arrangement pitch P. , To prevent the displacement of the fitting.

The socket contact 21 has a lead 23 integral with a contact piece 22 inserted into the insertion hole 13,
Each of the legs 23a is formed by projecting the lead 23 to the rear side of the insulating housing 11 and bending the lower part of the insulating housing 11 downward at a predetermined position at a substantially right angle with a longer projecting length. These legs 23a are provided with small through holes 26a of the alignment plate 26.
And penetrated through each small through-hole 44 provided in the printed board 41 in a grid pattern.

The alignment plate 26 through which the leg portion 23a of the socket contact 21 penetrates is formed in a small through-hole 26a (FIG. 3) arranged in a lattice matrix in accordance with the lattice matrix arrangement of the small through holes 44 of the printed board 41. And the leg 23
a is inserted into the corresponding small through-hole 26a, so that an accurate position is ensured, and when the lower end of the leg 23a is inserted into the small through-hole 44 of the printed board 41, smooth insertion can be performed. .

FIG. 5 is a partially enlarged sectional view showing details of the fixing structure of the protruding metal fitting. The protruding fitting 31 is formed by integrally forming a rod 32 having a circular cross section and a protruding portion 33 having a circular cross section larger than the rod 32 and having a concentric arrangement. A stopper flange 32a is integrally provided, a small cone 33a is provided at the center of the lower end of the protrusion 33, the rod 32 is fixed in the boss 15 by concentric arrangement by insert molding, and the protrusion 33 is After projecting in the same direction as the tip of the leg 23a of the lead 23, that is, downwardly, and after being inserted into the through hole 43 of the printed board 41 together with the boss 15, the projection is formed simultaneously with the soldering of the leg 23a of the lead 23 of the socket contact 21. 33 is fixed to the printed board 41 by the solder 35.

FIG. 6 shows another embodiment of the present invention.
(A) is a partially enlarged sectional view showing a state before soldering of a connection structure between a printed board and a connector, and (B) is a partially enlarged sectional view showing a state after soldering. in this case,
A blind press-fitting hole 15a is formed in advance on a boss 15 which is integrally formed with a protruding length substantially equal to the thickness of the printed board 41 in the insulating housing 11 and is concentrically formed in the press-fitting hole 15a. After the bar 32 is press-fitted and inserted into the through hole 43 of the printed board 41, when the protrusion 33 is soldered, the solder 35 rises into the through hole 43 of the printed board 41. If the molding resin 15 is appropriately selected, the boss 15 is deformed by heat, and a part of the resin forming the boss 15 wraps around the outer periphery of the retaining flange 32a of the protruding metal fitting 31 so that the boss 15 There is an advantage that the fixing force of the protruding metal member 31 to the side is increased.

The printed board 41 has a small through hole (not shown) through which the small projection 14 passes, a plurality of through holes 43 into which the boss 15 and the protruding metal member 31 are inserted, and the socket contact 2.
Each of the leads 23 is provided with a plurality of small through holes 44 and the like.

As shown in FIG. 7, the plurality of connectors as described above are arranged such that the end faces 11b of adjacent connectors are brought into close contact with each other, are arranged side by side, and are arranged on a printed board 41. When the lower surface, which is the pattern surface of the printed board 41, is dipped and soldered, the projection 33 and the leg 23a of the lead 23 of the socket contact 21 are soldered to the corresponding through-hole 43 and small through-hole 44, respectively. Are connected to the circuit of the printed board 41, and the projection 33 is firmly fixed to the printed board 41.

As shown in FIG. 7, when the plurality of connectors are arranged on the printed circuit board 41 such that the end faces 11b of the adjacent connectors are aligned and closely arranged as shown in FIG. The position of both end faces 11b at right angles to the length of the arrangement pitch P of the insertion holes 13 is set to １ ／, and the dimension L from the center line of the insertion holes 13 at both ends to the end face 11b is exactly the same as the arrangement pitch P of the insertion holes 13. Since it is set to ２, the pitch between the insertion holes 13 at the joint between the end faces 11 b of the adjacent connectors matches the pitch P between the other normal insertion holes 13.

According to the above embodiment, since the soldering of the protruding metal member 31 to the printed board 41 can be performed at the same time as the soldering of the socket contact 21, there is an advantage that no extra man-hour is required. Note that the present invention is not limited to the above embodiment, and can be similarly applied to the connector on the plug side. The entire protruding fitting 31 may be formed of a plate-like material, and the cross section of the protruding fitting 31 is circular. The number ratio between the small projections 14 and the protruding metal fittings 31 can be arbitrarily changed as required, other than 2: 1, and various other shapes can be used without departing from the gist of the present invention. Is possible.

[0021]

According to the first aspect of the present invention , a plurality of bosses are formed on the mounting contact surface of the insulating housing at intervals within a range where the contact pieces are accommodated, and the thickness of the printed board is reduced.
The bosses are almost the same length and
The protrusion is fixed, and the boss and the protrusion are
Was inserted into the corresponding said through hole, contactors the projecting bracket
Since the connector structure is fixed to the printed board by soldering to the through hole at the same time as soldering the connector, no overhang portions are required at both ends of the insulating housing,
Since the mounting density of the connector can be improved and the connector is fixed to the printed board only by soldering, not only does it require extra man-hours and special jigs , but also
Therefore, the protruding bracket is stably supported and connected to the printed board.
In this case, there is an effect that a sufficient fixing strength can be obtained. Also, a gap is secured between the boss and the through hole,
When the connector is soldered to the printed board,
Fixing protruding metal fittings drilled in the boss by the heat of the raised solder
Press-fitting hole is melted and deformed and is pressed into the press-fitting hole.
The protruding bracket is firmly fixed to the boss,
And the end face perpendicular to the mounting contact surface of the insulating housing
Position is set to half of the arrangement pitch of the contact pieces.
With this setting, a plurality of connectors can be arranged and fixed to a printed circuit board without shifting the arrangement pitch of the contacts, and the mounting density of the connectors can be further improved.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing a main part of a coupling structure between a printed board and a connector according to an embodiment of the present invention.

FIG. 2 is a front view showing a state before the connector according to the embodiment of the present invention is mounted on a printed board;

FIG. 3 is a plan view illustrating the connector according to the embodiment of the present invention;

FIG. 4 is a bottom view showing the insulating housing of the connector according to the embodiment of the present invention;

FIG. 5 is a partially enlarged cross-sectional view showing a main part of a connection structure between the printed board and the connector according to the embodiment of the present invention.

FIG. 6A is a partially enlarged sectional view showing a state before soldering of a connection structure between a printed board and a connector according to another embodiment of the present invention, and FIG. 6B is a state after soldering; FIG.

FIG. 7 is a schematic plan view for explaining a state in which the connectors are arranged and fixed to the printed board by a connection structure between the printed board and the connector according to the embodiment of the present invention;

FIG. 8 is a plan view showing a conventional connection structure between a printed board and a connector.

FIG. 9 is a cross-sectional view showing another example of a conventional connection structure between a printed board and a connector.

[Explanation of symbols]

 P pitch 11 Insulating housing 11a Mounting contact surface 11b End surface 13 Insertion hole 14 Small protrusion 15 Boss 15a Press-fit hole 21 Socket contact 22 Contact piece 23 Lead 23a Leg 26 Alignment plate 31 Projection fitting 32 Rod 32a Retaining stopper 33 Projection 33a Small cone 35 Solder 41 Printed board 43 Through hole (through hole) 44 Small through hole

Claims (3)

(57) [Scope of request for utility model registration] 1. A coupling structure between a printed board and a connector, wherein a mounting contact surface of an insulating housing in which contact pieces of a plurality of contacts are accommodated is brought into contact with a printed board surface to attach a connector to the printed board. A plurality of bosses are provided on the mounting contact surface of the insulating housing at intervals within a range where the contact piece is accommodated.
If it is projected with a length almost equal to the thickness of the printed board
Each projecting brackets are fixed to both the boss and the printed circuit board comprises a plurality of through-holes for soldering opened in accordance with the intervals of the plurality of bosses and projecting bracket, each of the plurality of bosses and projecting bracket Corresponding said uki
Insert the protruding metal fitting into the through hole at the same time as soldering the contact.
A connection structure between the printed board and the connector, wherein the connector is fixed to the printed board by soldering to the through hole . 2. A gap is secured between the boss and the through hole,
When the connector is soldered to the printed board,
Fixing protruding metal fittings drilled in the boss by the heat of the raised solder
Press-fitting hole is melted and deformed and is pressed into the press-fitting hole.
The printed board and connector according to claim 1, wherein a protruding metal fitting is firmly fixed to the boss.
Connection structure. 3. The mounting housing of the insulating housing is perpendicular to the mounting surface.
The position of the end face to be formed is set to 1/2 of the arrangement pitch of the contact pieces.
Setting The printed board according to claim 1 or 2, wherein
Connection structure with connector.