JPH09283199A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the bending and the deformation of a connector in a connector connection terminal area where the bending and the deformation occur easily resulting from the miniaturization thereof in a connector equipped with offset-bending terminals. SOLUTION: In a connector, plural terminals, one side ends of which are contacts 21a and the end pieces of which behind offset-bending portions via the following fixing portions 21c to an insulator 22 are board connection terminals 31d against a circuit board, are arranging fixed to an insulator 22. A corrugation 31a protruding to one face side is formed along a lengthwise direction in an area at least containing the offset bending portion from first bending portion 21d' to second bending portion 21d", and side walls 31c are formed on the board connection terminal 31d so as to form a terminal 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a connector provided with a terminal which is offset-bent, and more particularly, a connector which is suppressed from being bent or deformed due to an external force in a board connecting terminal region which is apt to be bent and deformed easily. Regarding

In the field of connectors in recent years, the connectors themselves have been downsized in order to meet the demands for downsizing and price reduction as electronic equipments, but the connector terminals have been downsized accordingly, and as a result, circuit boards and the like. The board connection terminal connected to the board is easily bent or deformed during storage or transportation, and it takes a lot of man-hours to mount the board on the circuit board.

[0003]

2. Description of the Related Art FIG. 4 is a diagram for explaining a structure of a conventional connector together with a manufacturing method, and FIG. 5 is a diagram for explaining a problem.

FIG. 4 illustrates a case where the connector is a plug connector having two rows of plug terminals, (4-1) is a perspective view of the structure of the connector, and (4-2) is a diagram after completion. FIG. 4 is a view showing a state where the board is mounted in a sectional view at a terminal portion.

In FIG. 4 (4-1), a conventional connector 2 mounted on a circuit board (hereinafter referred to as a board) 1 has a plurality of plug terminals 21 and the plug terminals 21 arranged in two rows. And an insulator 22.

The plug terminal 21 formed in this case by punching a metal plate having good conductivity such as a copper alloy has a jack whose one end is not shown, as shown in the extraction diagram (a) of the plug terminal 21. In the plug contact 21a connected to the terminal, the other end after passing through the offset bending region 21d following the fixed portion 21c having the bulges 21b formed on both sides in the width direction is formed on the electrode portion connected to a circuit (not shown) on the substrate 1. It is formed on the board connection terminal 21e that can be inserted into the through hole 1a, and the surface is a metal layer such as silver (Ag) or gold (Au) that has excellent contact stability and solder connection. It is covered.

Further, the insulator 22 made of a resin molding material has an intermediate region sandwiched between the board mounting portions 22a at both longitudinal ends as a plug terminal implantation region 22b.
The bottom surface 22c of the board mounting side of 22b is the above-mentioned board mounting portion 22a.
It is formed with a step recessed from the substrate mounting surface 22d by a predetermined distance a.

In the plug terminal implantation area 22b, through holes 22e into which the above-mentioned plug terminals 21 can be inserted from the plug contact side are formed in a matrix of two rows with a predetermined pitch. When the plug terminal 21 is inserted to a predetermined position, the bulge 21b bites into the inner wall surface of the through hole to position and fix the insulator 22.
In the fixed state, the above-mentioned offset bending region of the plug terminal 21 is absorbed in the above-mentioned gap a.

Then, the plug terminal 21 is press-fitted into each through hole 22e of the insulator 22 to a predetermined position so as to be fixed, whereby each plug terminal 21 is planted as 21 _-1 and 21 _-2.
Can be configured as shown in (4-2).

At the same time when the terminals are fixed, the offset bending region 21d of the plug terminal 21 is connected to the bottom surface 22c of the insulator 22.
Since it is difficult to make contact with the bottom surface,
A gap b as shown in the figure is provided between 22c and the offset bending region 21d.

Next, the connector 2 is placed on the board 1 at a position where the board connecting terminals 21e and the through holes 1a of the board 1 correspond to each other, and the two are soldered and connected by a normal reflow soldering technique or the like. Thus, the connector 2 can be mounted on the board 1 in the state shown in (4-2).

[0012]

In such a connector 2, since the connector can be constructed only by press-fitting and pre-molding the plug terminal, which has been formed in advance, into the insulator, there is an advantage that an efficient assembling work can be realized.

However, as the size of the connector is reduced, the plug terminal 21 is also miniaturized. This means that the thickness t and the width w of the terminal material are reduced, which causes deformation and bending. This means that it becomes easier, but this deformation or bending is particularly likely to occur in the offset bending region 21d and the board connecting terminal 21e to which the bending process is added.

FIG. 5 for explaining the problem shows this state. (5-1) shows the deformed state in the offset bending region exposed from the insulator, and (5-2) shows the board connecting terminal. 21e
It shows the state of bending in.

That is, in (5-1) of the figure, when the right-angled bending at the first bent portion 21d 'and the second bent portion 21d "in the offset bent region 21d of the plug terminal 21 is inappropriate, the offset is caused. The bending region 21d and subsequent parts are displaced, and as a result, the tip position of the board connecting terminal 21d is displaced.

Further, as shown in (5-2) of the figure, the board connecting terminal 21
When bending or deformation occurs in the region of e, the tip position of the board connecting terminal 21d is displaced similarly to the above. Therefore, as miniaturization of the connector progresses, the above-mentioned deformation and bending of the offset bending region 21d and the board connecting terminal 21e are likely to occur, and it is difficult to insert the board 1 into each through hole 1a at once as described in FIG. From individual board connection terminals
There was a problem that it was necessary to modify 21e, and it took a lot of man-hours to mount it on the board, which became an obstacle to productivity improvement.

[0017]

SUMMARY OF THE INVENTION The above-mentioned problem is that a plurality of terminals, each of which has an end piece as a substrate connecting terminal after one end of which is a contact and which is offset and bent through a fixing portion to the insulator, are aligned with the insulator. In the region where the terminal includes at least the first bending portion and the second bending portion of the offset bending, the protrusion protruding to one side is provided along the longitudinal direction. Formed,
The board connection terminal has a side wall formed connector.

In addition, a connector in which a plurality of terminals, each of which has a contact at one end and which is offset and bent through a fixing portion to the insulator which follows the end, serves as a board connecting terminal, is aligned and fixed to the insulator. There is provided a connector in which the terminal is provided with a corrugation projecting along one side in a region from a position including the first bending portion of the offset bending to the tip of the board connecting terminal along the longitudinal direction. .

When a linear projection (hereinafter referred to as "collation") protruding to one side is formed on the center line of the rectangular plate material,
The bending stress in the direction orthogonal to the center line of the rectangular plate material can be increased.

When both sides of the rectangular plate member are bent in the plate thickness direction, the bending stress in the direction orthogonal to the center line of the rectangular plate member can be increased. Therefore, in the present invention, the above-mentioned collagenation having a length sufficient to cover the offset bending region of the plug terminal is formed in a region including the first bending portion and the second bending portion of the offset bending region of the plug terminal, Both sides of the board connecting terminal are bent in the plate thickness direction to form plug terminals, thereby forming a required connector.

This means that the offset bending region of the plug terminal is suppressed from being deformed or bent by the above-mentioned corrosion, and the deformation or bending of the board connecting terminal is suppressed by the folding until the offset bending region is connected to the board. It is shown that the deformation and bending in the boundary area with the terminal are suppressed by the above-mentioned corrosion and bending.

Therefore, it is possible to realize a connector which can suppress deformation and bending in the offset bending region and the board connecting terminal, and can expect improvement in productivity by reducing the number of mounting steps on the board.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram for explaining a configuration example of a connector according to the present invention, FIG. 2 is a diagram for explaining stepwise a method of forming a plug terminal according to the present invention, and FIG. 3 is a diagram for explaining the present invention. It is a figure explaining the other structural example of the connector which becomes.

In each of the drawings, the case where the connector described in FIG. 4 is used as a base is used as an example, and therefore, the same object members and parts as those in FIG. 4 are designated by the same reference numerals and duplicate description will be omitted. .

In FIG. 1 showing the connector according to the present invention, (1-
1) shows the structure and (1-2) is a sectional view showing the state at the time of completion. In (1-1) of FIG. 1, the connector 3 comprises the insulator 22 described in FIG. 3 and the plug terminal 31 according to the present invention.

In particular, the plug terminal 31 in this case has the above-mentioned offset bending region 21d of the plug terminal 21 on the center line of the first bending portion as shown in the enlarged circle (a) of the main portion. A region from 21d 'to the second bent portion 21d "is projected to the valley side of the first bent portion 21d' as shown in the cross-sectional view (b) in the circle, which is taken by cutting a continuous corrugation 31a with arrows c to c '. In addition to the offset bending region 31b, the board connecting terminal 21e is changed from the both sides to the second bending portion 21b.
It is replaced with a board connecting terminal 31d having a side wall 31c which is bent upright on the valley side of d ″.

In the plug terminal 31, the bending or deformation in the direction orthogonal to the center line in the above-mentioned correlation formation region is suppressed by the corrosion 31a, and the bending or deformation in the direction orthogonal to the center line at the board connecting terminal 31d is suppressed. Is suppressed by the side wall 31c, and as a result, bending and deformation in the region from the offset bending region 31b to the tip of the substrate connecting terminal 31d can be suppressed.

Therefore, by pressing and fixing the plug terminal 31 into the insulator 22 as described with reference to FIG. 3, it is necessary to suppress bending and deformation in the entire area from the offset bending area 31b to the board connecting terminal 31d. Connector 3 can be realized.

FIG. 2 showing the main part of the plug terminal 31 according to the present invention is shown in FIG. 2 which shows a step of forming the plug terminal 31. (2-1) shows a blank state, (2-2) Shows the state at the time of forming the corrosion, (2-3) shows the state at the time of offset bending, and (2-4) shows the state at the side wall formation.

That is, in (2-1) of the figure, 31 _-1 shows the blank of the plug terminal 31 explained in FIG. 1, except for the plug contact 21a and the fixing portion 21c of the plug terminal 31. Only the region, that is, the region indicated by the circle in the figure (a) is shown.

In the blank 31 _-1 in this case, a widened portion 31 having a width corresponding to the height of the side wall 31c described in FIG. 1 is formed on both sides of the board connecting terminal 21e in the plug terminal 21.
c'is formed.

The broken line A in the figure shows the position corresponding to the first bent portion 21d 'in FIG. 1, and the broken line B shows the position corresponding to the second bent portion 21d "in FIG.
Therefore, the first bent portion on the center line of the blank 31 _-1
In a continuous area including a broken line A corresponding to 21d ′ and a broken line B corresponding to the second bent portion 21d ″, by molding the corrugation 31a described in FIG. 1 by, for example, a normal press molding technique, The blank 31 _-2 in which only the collagenation 31a is formed can be formed as shown in (2-2).

Next, an offset bend region in which the portion of the broken line A is mountain-folded and at the same time the portion of the broken line B is valley-folded is formed by, for example, a normal press forming technique, so that the offset bend region provided with the above-mentioned correlation 31a is formed. A blank 31 _-3 with 31b can be obtained as shown in (2-3).

Further, by bending the widened portion 31c 'in a direction opposite to the above-mentioned protruding direction of the corrugation, that is, in the upper side of the drawing, the board connecting terminal 31d having the side wall 31c and the offset bent region 31b are formed as described with reference to FIG. The provided plug terminal 31 can be obtained as shown in (2-4).

Even if the board connection terminal 31d is bent to have a U-shape in a sectional view orthogonal to the longitudinal direction,
It is clear that the same effect can be obtained. In FIG. 3 for explaining another configuration example according to the present invention, (3-1) is a configuration and (3-2) is a sectional view showing a state at the time of completion.

In (3-1) of FIG. 3, the connector 4 comprises the insulator 22 described in FIG. 3 and the plug terminal 41 according to the present invention. In particular, the plug terminal 41 in this case has an offset bending area 21d and a board connecting terminal 21e of the plug terminal 21 shown in FIG.
The continuous 41 to the entire area from the first bent portion 21d 'on the center line to the tip of the board connecting terminal 21e.
Offset bending region formed by molding a as described in Fig. 1.
It is replaced with 41b and board connection terminal 41c.

In the plug terminal 41, since the bending or deformation in the direction orthogonal to the center line in the above-mentioned correlation formation region is suppressed by the correlation 31a, the bending or deformation at the offset bending region 41b and the board connecting terminal 41c is prevented. Both can be suppressed.

The plug terminal 41 has the offset bending described in (2-3) of FIG. 2 after the collation 31a described in (2-2) of FIG. 2 is continuously molded to the tip of the blank 31 _-1 . Since it can be realized by carrying out, there is an advantage that the number of molding steps can be reduced as compared with the plug terminal 31 described in FIG.

Note that the same effect can be obtained by extending the above-described collagenation 31a described with reference to FIG. 1 as it is to form up to the tip of the substrate connection terminal 31d as in the collaboration 41a of FIG.

[0040]

As described above, according to the present invention, there is provided a connector which is miniaturized to suppress bending and deformation due to an external force in a board connecting terminal region where bending and deformation are likely to occur and which is efficiently mounted on a board. can do.

In the description of the present invention, the case where the connector is a plug connector is taken as an example, but the same effect can be obtained with a jack connector as long as the jack terminal has the board connecting terminal described above. it is obvious.

[Brief description of drawings]

FIG. 1 is a diagram illustrating a configuration example of a connector according to the present invention.

2A to 2C are views for explaining a method of forming a plug terminal according to the present invention step by step.

FIG. 3 is a diagram illustrating another configuration example of the connector according to the present invention.

FIG. 4 is a diagram illustrating a configuration of a conventional connector together with a manufacturing method.

FIG. 5 illustrates a problem.

[Explanation of symbols]

3,4 Plug connector (connector) 21a Plug contact 21c Fixed part 21d 'First bent part 21d "Second
Bent part 21e Board connection terminal 22 Insulator 22e Through hole 31,41 Plug terminal (terminal) 31 _-1 , 31, _-2 , 31 _-3 Blank 31a, 41a Corrugation 31b Offset bending area 31c Side wall 31c 'Widened part 31d Board Connecting terminal

Claims (2)

[Claims] 1. A connector in which a plurality of terminals, each of which has a contact as one end and which is a substrate connecting terminal after the end piece is offset and bent through a fixing portion to the insulator that follows, is aligned and fixed to the insulator. In the region where the terminal includes at least the first bent portion and the second bent portion of the offset bending, a protrusion protruding to one side is formed along the longitudinal direction, and Is a connector having a side wall formed. 2. A plurality of terminals, each of which has a terminal connected to a circuit board and whose end piece is offset-bent through a fixing portion to the insulator which is a contact at one end, are aligned and fixed to the insulator. In the connector, the terminal is formed with a protrusion projecting on one side along a longitudinal direction in a region from a position including the first bending portion of the offset bending to a tip of the board connecting terminal. Characteristic connector.