JPH1079269A - Connector for printed circuit board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrict looseness of a soldered part of a connector for a printed circuit board. SOLUTION: A female member terminal metal fitting 20 is structured so that a band piece 22 is provided in continuity to the tail of the connection part 21 and a soldered part 22b is formed at the end of the band piece 22. Further the band piece 22 is provided with a detent projection 23. A projection 14 is formed at the installing hole 11b of a connector housing 10, and there a detaining groove 13 is formed. When the metal fitting 20 is inserted into a cavity 11 through the installing hole 11b, the detent projection 23 is fitted in the groove 13, which should restrict the vertical and horizontal motions of the band piece 22, and thereby looseness of the soldered part 22b is restricted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a printed circuit board connector mounted on a printed circuit board.

[0002]

2. Description of the Related Art As a connector for a printed circuit board, a connector disclosed in Japanese Patent Application Laid-Open No. Hei 3-11566 is known. As shown in FIG. 10, the female terminal fittings 3 are assembled in cavities 2 arranged side by side in a connector housing 1. The female terminal fitting 3 is provided with a strip 5 extending to the outside of the connector housing 1 at the rear end of the connecting portion 4 connected to the male terminal fitting, and the strip 5 is provided with a female terminal. The metal fitting 3 has a soldering portion 5 a which is bent in the insertion / removal direction with respect to the cavity 2 so as to be deformable and then soldered to the printed circuit board 6 at the rear end. The reason why the strip portion 5 is bent so as to be able to bend and deform is to reduce the stress applied to the soldering portion 5a by inserting and removing the mating connector by bending and deforming, thereby preventing solder cracking. .

[0003]

However, in the above construction, the female terminal fitting is formed in a box shape, whereas the strip is formed in a thin band shape, so that the female terminal fitting is assembled in the cavity. In this state, a play space is formed between the strip and the inner wall surface of the cavity. Therefore, there is a possibility that the soldered portion formed at the end of the strip portion may be loose and easily deformed by external force during transportation or mounting. In addition, the wobbling of the soldering portion makes it difficult to position the soldering portion with respect to the printed circuit board, and reduces the work efficiency.

On the other hand, some terminal fittings are provided with a stabilizer for facilitating insertion of the terminal fitting into the strip portion, but this is a structure merely engaging with the inner wall surface of the cavity. As a result, the movement in the direction of the inner wall surface to be engaged is restricted, but it is allowed to move in the direction perpendicular to the direction, which is incomplete in preventing the wobble of the soldered portion. . The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a printed circuit board having a terminal fitting having a soldered portion at an end portion of a strip portion, in which wobbling of the soldered portion is regulated. To provide connectors.

[0005]

According to a first aspect of the present invention, there is provided a printed circuit board connector having a terminal housing in a connector housing, the terminal housing having a mating terminal fitting. A terminal fitting including a connectable connection portion and a strip extending from the connection portion to the terminal housing chamber so as to be freely movable is housed therein,
In a printed circuit board connector in which the extended end of the strip is a solderable portion that can be soldered to the printed board, the strip and the connector housing are engaged with an engaging portion that can be engaged with each other. A mating portion is provided, and the movement of the strip is regulated by the engagement between the engaging portion and the engaging receiving portion.

According to a second aspect of the present invention, there is provided the printed circuit board connector according to the first aspect, wherein the strip is formed by bending the soldering portion via a bending portion which can be bent and deformed in a direction in which the terminal fitting is inserted into and removed from the terminal accommodating chamber. The engaging portion is an engaging protrusion protruding between the bending portion and the soldering portion, and the engaging receiving portion is an engaging groove in the connector housing into which the engaging protrusion can be inserted. It is characterized by being.

According to a third aspect of the present invention, there is provided the printed circuit board connector according to the second aspect.
The engagement receiving portion is provided at an assembling opening for assembling the terminal fitting into the terminal accommodating chamber, and an inner wall surface of the terminal accommodating chamber to avoid interference between the connecting portion and the engaging portion when assembling the terminal fitting. Is characterized in that it is cut off diagonally from the mounting opening to the back.

According to a fourth aspect of the present invention, there is provided the printed circuit board connector according to the second aspect.
It is characterized in that the engagement receiving portion provided in the connector housing is provided at a position separated from an assembling opening for assembling the terminal fitting into the terminal accommodating chamber.

According to the first aspect of the present invention, when the terminal fitting is assembled in the terminal receiving chamber of the connector housing, the engagement of the engaging portion with the engaging receiving portion causes the terminal receiving portion of the strip to receive. Movement relative to the room is regulated. Therefore, the soldered portion formed at the extended end of the strip does not become loose, thereby preventing deformation during transportation and assembly, and improving the workability by facilitating the positioning work on the printed circuit board. Can also be planned.

According to the second aspect of the present invention, the wobble of the soldering portion is regulated by fitting the engaging projection formed on the strip into the engaging groove formed on the connector housing. In addition, since the soldering part is connected to the end of the bending part, this part bends and deforms when the mating connector is inserted and removed, so that stress on the soldering part can be reduced, thereby preventing solder cracking. it can.

According to the third aspect of the present invention, since one inner wall surface of the terminal accommodating chamber is obliquely cut away from the mounting opening to the back, the terminal fitting is provided in the engaging receiving portion disposed in the mounting opening. Is inserted obliquely into the terminal accommodating chamber so as to avoid interference with the terminal housing. Therefore, even if the engagement receiving portion is provided in the mounting port, it is possible to avoid interference between the connection portion of the terminal fitting and the engagement receiving portion when the terminal fitting is assembled.

According to the fourth aspect of the present invention, since the engagement receiving portion is provided at a position deviated from the mounting opening, even if the terminal fitting is inserted into the terminal receiving chamber through the mounting opening, Interference between the connecting portion and the engagement receiving portion can be avoided.

BEST MODE FOR CARRYING OUT THE INVENTION

<First Embodiment> Hereinafter, a first embodiment of a printed circuit board connector according to the present invention will be described with reference to FIGS. As shown in FIG. 4, the connector for a printed board according to the present embodiment includes a connector housing 10 in which a plurality of cavities 11 are juxtaposed, and a female terminal fitting 20 assembled to each of the cavities 11. .

The female terminal fitting 20 is, as shown in FIG.
On the distal end side (lower left side in FIG. 1), there is provided a connecting portion 21 into which a male terminal fitting (not shown), which is a mating terminal fitting, is inserted. A contactable elastic contact piece (not shown) is provided. A locking hole 21a is formed in the upper surface of the connection portion 21. When the female terminal fitting 20 is inserted into the cavity 11, the lance 12 protruding into the cavity 11 is engaged. Are prevented from falling out of the cavity 11.

The rear end of the connecting portion 21 is connected to a strip 22 having a strip shape and extending outward of the connector housing 10. This strip 22 is located on the lower side (the lower side in FIG. 4).
A bent portion 22a that can be bent and deformed in the front-rear direction (the direction in which the male terminal fitting is inserted and removed; the left-right direction in FIG. 4), and a printed board (not shown) And a soldering portion 22b to be soldered. The reason why the soldering portion 22b is connected to the connecting portion 21 through the bending portion 22a is that the bending portion 22a bends in the insertion / removal direction when the male terminal fitting is inserted / extracted, so that the soldering portion 22b is bent. This is because the stress applied to the male connector can be reduced, thereby preventing solder cracking when inserting and removing the male connector.

Further, the strip portion 22 has a bending deformation portion 22a.
At the left and right edges (both edges extending in the length direction) between the and the soldering portion 22b, engagement projecting pieces 23, 23 project substantially horizontally. When the female terminal fitting 20 is attached to the cavity 11, the engaging projection 23 fits into an engaging groove 13 of the connector housing 10 described later. The left and right edges of the soldering portion 22b are bent downward at substantially right angles to form a channel, thereby increasing the rigidity of the soldering portion 22b.

On the other hand, each of the cavities 11 juxtaposed in the connector housing 10 has a square hole, and an insertion port 11a for inserting a male terminal fitting is formed at the front end thereof, and at the rear end thereof. The opening 11b for inserting the female terminal fitting 20 into the cavity 11 is formed. In this assembling opening 11b, the upper ends of the left and right side walls (the left and right side walls in FIG. 5) are slightly opposed to each other and protrude inward. An extending engagement groove 13 is formed. And the female terminal fitting 20
Is assembled into the cavity 11, the engaging protrusion 23 of the female terminal fitting 20 is fitted into the engaging groove 13, and the upper and lower directions of the strip 22 (up and down and left and right directions in FIG. 5). All movements are regulated.

The bottom surface of the cavity 11 is cut obliquely from the center to the rear end in the length direction, so that the female terminal fitting 20 is obliquely inserted into the cavity 11. That is, in order to avoid interference between the connecting portion 21 and the protruding portion 14, the connecting portion 21 is pushed inward so as to pass under the protruding portion 14.

Next, the work of assembling the female terminal fitting 20 will be described. The female terminal fitting 20 is inserted into the mounting opening 11b of the connector housing 10 from the connection portion 21 side (see FIG. 2). Then, the connecting portion 21 is obliquely pushed along the bottom surface, and when the connecting portion 21 has passed through the protruding portion 14 in the assembling opening 11b, the connecting portion 21 is leveled and further carried to the far side (see FIG. 3). Then, as the female terminal fitting 20 is inserted into the regular assembling position, the engaging projection 23 is inserted into the engaging groove 13. When the female terminal fitting 20 is inserted into the proper assembling position as shown in FIG. 4, the engaging projection 23 is completely fitted into the engaging groove 13 and the strip 2
2 is restricted in the vertical and horizontal directions (see FIG. 5).

As described above, in the present embodiment, since the movement of the strip 22 in the vertical and horizontal directions can be restricted, the soldering portion 22 formed at the extended end of the strip 22 is formed.
As a result, the soldering portion 22b is less likely to be deformed during transportation or assembly, and the work for positioning the printed circuit board is facilitated, so that the workability can be improved. Also, assembling port 11b
Even when the protrusion 14 having the engagement groove 13 is provided, the bottom surface on the rear end side of the cavity 11 is notched obliquely, so that when the female terminal fitting 20 is inserted, the female terminal fitting 20 and the projection 14 interfere. Can be avoided.

<Second Embodiment> A printed circuit board connector according to a second embodiment of the present invention will now be described with reference to FIG.
This will be described with reference to FIG. The difference between the present embodiment and the first embodiment lies in the shape of the engaging projection and the engaging groove, and the other portions have the same configuration as the first embodiment. The description is omitted here.

As shown in FIG. 6, the engaging projection 31 of the present embodiment is arranged horizontally between the bending portion 22a and the soldering portion 22b from its left edge (right edge in FIG. 7). After that, it is bent vertically upward and folded at right angles to the strip 22 side.

On the other hand, as shown in FIG.
After extending inward from the rear end face in the upper part of the assembling opening 11b, the cross-sectional shape extends upward from the upper right corner (upper right corner in FIG. 7) of the assembling opening 11b in rear view, and then bends inward at a right angle. L-shaped. Also, cavity 1
1 does not cut off the bottom surface diagonally as in the first embodiment, but forms a straight square hole.

Then, the female terminal fitting 20 is connected to the mounting port 11b.
When the female terminal fitting 20 is inserted into the regular assembling position when inserted into the cavity 11 through
The engagement projection 31 is inserted into the engagement groove 32. Accordingly, when the female terminal fitting 20 is assembled at the regular assembling position, the engagement protrusion 31 and the engagement groove 32 are fitted to each other, so that the movement in the vertical and horizontal directions with respect to the strip 22 is restricted. As in the first embodiment, it is possible to prevent wobbling of the soldering portion 22b formed at the extended end of the strip 22. Further, in the present embodiment, the engaging groove 32 is provided in the upper portion of the assembling opening 11b, and it is not necessary to insert the female terminal fitting 20 obliquely as in the first embodiment. is there.

<Third Embodiment> Hereinafter, a third embodiment of a printed circuit board connector according to the present invention will be described with reference to FIG.
This will be described with reference to FIG. The difference between the present embodiment and the first embodiment lies in the shape of the strip portion and the engagement groove, and the other portions have the same configuration as the first embodiment.
The same portions are denoted by the same reference numerals and description thereof will be omitted.

As shown in FIG. 8, the strip portion 41 of this embodiment is bent downward from the rear end of the connection portion 21 to form a bending deformation portion 41a as in the first embodiment. The end on the extension side protrudes higher than the upper surface of the connection portion 21, and the soldering portion 41b is formed from that position. Engagement projections 23 are formed on both left and right edges of the connecting portion between the bending portion 41a and the soldering portion 41b, which protrude higher than the upper surface of the connecting portion 21, as in the first embodiment. . on the other hand,
As shown in FIG. 9, the cavity 11 has a straight square hole without being cut off obliquely as in the first embodiment.
As shown in FIG. 5, an engaging groove 42 is formed in an upper portion of the assembling opening 11b of the cavity 11 inward from the rear end face.

Then, the female terminal fitting 20 is connected to the mounting port 11b.
When the female terminal fitting 20 is inserted into the regular assembling position when inserted into the cavity 11 through
The engaging projection 23 is inserted into the engaging groove 42. Thus, when the female terminal fitting 20 is assembled at the regular assembling position, the movement in the up, down, left, and right directions with respect to the strip 41 is restricted, so that the wobbling of the soldering section 41b is prevented as in the first embodiment. Can be. Also, cavity 1
1 has a straight square hole, and the female terminal fitting 20 can be inserted straight, so that the assembling work is easier than in the first embodiment.

It should be noted that the present invention is not limited to the above embodiments, but can be modified as follows, for example, and these embodiments also belong to the technical scope of the present invention. (1) In each of the above embodiments, the present invention employs the female terminal fitting 2
Although the example applied to 0 is shown, it is also possible to apply to the male terminal fitting.

(2) In each of the above embodiments, the strip 2
Although the bending deformation portions 22a and 41a are formed on the strips 2 and 41, the strip may be formed in a straight shape without forming the bending deformation portions 22a and 41a.

(3) In each of the above embodiments, the strip 2
Although the engaging projections 23 and 31 are formed on the sides 2 and 41, and the engaging grooves 13, 32 and 42 are formed on the connector housing 10 side, the engaging projections are formed on the connector housing side. On the strip side, an engagement hole engageable with the engagement projection may be formed, that is, the mutually engageable engagement portion and the engagement receiving portion are formed on the strip portion. Any configuration may be used as long as it is provided on each of the side and the connector housing side, whereby the movement of the strip in the vertical and horizontal directions (the direction orthogonal to the direction of insertion into the cavity) can be restricted.

(4) In the first embodiment, the engaging projection 23 is set to a size that does not protrude beyond the width of the connecting portion 21. An engagement groove that can be engaged with the engagement protrusion may be formed on both the left and right inner wall surfaces of the cavity so as to be set to a size that protrudes from the width dimension. In this configuration, since there is no need to provide a protrusion to form the engagement groove, it is not necessary to diagonally cut the bottom surface of the cavity to avoid interference between the protrusion and the female terminal fitting. In addition, the present invention can be implemented with various modifications without departing from the scope.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a female terminal fitting of a first embodiment.

FIG. 2 is a side cross-sectional view showing the female terminal fitting in the process of being assembled (obliquely inserted) in the embodiment.

FIG. 3 is a side cross-sectional view showing the female terminal fitting in the process of being assembled (in a state where the female terminal fitting has passed through a protruding portion) in the embodiment.

FIG. 4 is a side sectional view showing an assembled state of the female terminal fitting in the embodiment.

FIG. 5 is a front sectional view showing an assembled state of the female terminal fitting in the embodiment.

FIG. 6 is a perspective view showing a female terminal fitting of a second embodiment.

FIG. 7 is a front sectional view showing an assembled state of the female terminal fitting in the embodiment.

FIG. 8 is a perspective view showing a female terminal fitting of a third embodiment.

FIG. 9 is a front sectional view showing an assembled state of the female terminal fitting in the embodiment.

FIG. 10 is a side sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Connector housing 11 ... Cavity (terminal accommodating chamber) 13 ... Engagement groove (engagement receiving part) 20 ... Female side terminal fitting (terminal fitting) 22 ... Strip piece 22a ... Deflection part 22b ... Solder part 23 ... Engagement projection (engagement projection)

Claims (4)

[Claims] 1. A connector housing having a terminal accommodating chamber, a terminal portion in the terminal accommodating chamber, the terminal being connectable to a mating terminal fitting, and a terminal being movable from the connecting portion to the terminal accommodating chamber. A printed circuit board connector in which a terminal fitting having a strip extending outside the accommodation chamber is accommodated, and an extended end of the strip is a solderable portion that can be soldered to a printed board; The part and the connector housing are provided with an engaging part and an engagement receiving part which can be engaged with each other, and the movement of the strip part is regulated by the engagement between the engaging part and the engagement receiving part. A connector for a printed circuit board, comprising: 2. The printed circuit board connector according to claim 1, wherein the strip is connected to the soldering portion via a bending portion that can be bent and deformed in a direction in which the terminal fitting is inserted into and removed from the terminal receiving chamber. Wherein the engagement portion is an engagement protrusion protruding between the bending deformation portion and the soldering portion, and the engagement receiving portion is capable of inserting the engagement protrusion in the connector housing. A connector for a printed circuit board, which is an engagement groove. 3. The printed circuit board connector according to claim 2, wherein said engagement receiving portion is provided in an installation opening for assembling said terminal fitting into said terminal accommodating chamber, and said engagement receiving part is provided when said terminal fitting is assembled. A connector for a printed circuit board, wherein one inner wall surface of the terminal accommodating chamber is cut obliquely from the mounting opening to a depth in order to avoid interference between a connecting portion and the engaging portion. 4. The printed circuit board connector according to claim 2, wherein the engagement receiving portion provided on the connector housing is provided at a position separated from a mounting opening for mounting the terminal fitting to the terminal receiving chamber. A connector for a printed circuit board, wherein the connector is provided.