JPH04167379A - Surface-packaging type connector - Google Patents

Abstract

PURPOSE:To facilitate the work of connection for packaging so as to enhance productivity of surface-packaging type connectors by providing an insulator constituting a connector with a contact holder used for positioning a contact to a connection electrode and for pressing the contact against the connection electrode. CONSTITUTION:A plug connector 11 is mounted on a substrate 5 in such a way that the surface of the connector 11 located near the deepest portion of the guide channel 12b of an insulator 12 is opposite to the substrate 5 and a solder paste is applied onto the connection electrode 5a of the substrate 5 and a contact holder 14 is inserted with its linear protrusion 14b joined to the channel 12b. Then each contact 13a is deformed as it is curved from its end portion toward the side face of the substrate 5. Next, the holder 14 is inserted and then each contact 13a is further deformed and pressed against the electrode 5a. The work of connection for packaging is made easier by automatic positioning and automatic pressing of each contact 13a and a surface- packaging type connector of high productivity is offered.

Description

[Detailed Description of the Invention] [Summary] The present invention relates to a surface-mounted connector for a board, and aims to improve productivity by facilitating connection work during mounting. A surface mount type connector in which a plurality of terminals formed on the surface are insulated and held so that the contacts are aligned in a line, and the tips of the contacts are attached to an insulator constituting the surface mount type connector. The contact holder is configured to include at least a contact holder having means for positioning the contact in correspondence with the connection electrode of the substrate and means for pressing the tip of the contact after positioning against the connection electrode.

[Industrial application field]

The present invention relates to an insulator structure of a surface mount type connector for a board, and more particularly to a surface mount type connector that improves productivity by facilitating connection work during mounting.

In recent years, as electronic equipment has become smaller and more sophisticated, many electronic devices have come to be mounted on substrates.

Therefore, it is necessary for the surface mount type connector attached to the board to take out various signals from the board to the outside to be as small as possible. Therefore, a solution to this problem is desired since the connection work takes many man-hours.

[Conventional technology]

FIG. 3 is a diagram showing a conventional surface mount type connector and its mounting method.

In Fig. 3, a plug connector 1 of a surface mount type connector has an insulator 2 formed in a U-shape in plan view with the same thickness.
and a plurality of plug terminals 3 which are inserted and fixed in alignment at predetermined positions of the insulator 2, and one end of the plug terminal 3 is a plug inserted into a jack terminal of a jack connector 4 shown by a broken line. The other end is formed on one side of the insulator 2 in the thickness direction (lower side in the figure) 2
The contact 3b is bent in an offset manner so as to slightly protrude from the contact 3b.

Further, on the substrate 5 on which the plug connector 1 is mounted and mounted, connection electrodes 5a are patterned at positions corresponding to the respective contacts 3b of the plug connector 1.

Therefore, in order to mount the plug connector 1 on the board 5, for example, after applying solder paste on the connection electrodes 5a of the board 5, the plug connector l is lowered in the direction of the arrow in the figure and connected to each contact 3b. One side 2a of the insulator 2 is pressed against the top surface of the substrate 5 to position it while aligning it with the connection electrode 5a, and then the two are pressed and fixed together using a jig (not shown) and then solder connected through a predetermined heating process. ing.

Particularly in this case, since the insulator 2 is formed into a "U" shape in plan view, there is an advantage that the plug connector 1 can be stably positioned and fixed to the board 5.

However, when the connector I is miniaturized, the contact 3b
The width of the terminals, the pitch between adjacent terminals, etc. inevitably become smaller.

Therefore, the strength of the contact 3b itself is weakened, making it more likely to bend or deform, and even a slight bend or deformation may induce a decrease in dielectric strength voltage or a short circuit between adjacent terminals.

In order to eliminate this problem, measures such as severely controlling the pitch accuracy of the contact 3b and bending the contact 3b downward in the drawing to apply pressure to the board during mounting are taken. However, since the above-mentioned trouble cannot be completely eliminated, the current state is that the shape of the contact portion must be corrected manually, taking a lot of man-hours.

[Problem to be solved by the invention]

Conventional surface-mounted connectors have had the problem of not being able to be expected to improve productivity because the mounting work on the board requires a lot of man-hours.

[Means for solving the problem] The above problem is solved by a surface mount connector in which a plurality of terminals formed on a contact whose one end is connected to a board are insulated and held so that the contacts are aligned in a line. The insulator constituting the surface mount connector includes means for positioning the tip of the contact in correspondence with the connection electrode of the board, and means for pressing the tip of the contact after positioning against the connection electrode. The present invention is solved by a surface-mounted connector configured to include at least a contact holder having the following features.

[For production]

If the insulator is configured so that each contact can be automatically positioned when mounted on the board, the mounting work on the board can be facilitated.

In the present invention, a contact holder is added to the insulator of the surface-mounted connector, which is provided with grooves that can catch and position each contact in its width direction.

Therefore, by using this contact holder when mounting a surface mount type connector on a board, deformed or bent contacts can be corrected correctly, and productivity can be improved by making mounting work on the board easier. It is possible to make it happen.

〔Example〕

FIG. 1 is a diagram illustrating an example of a surface-mounted connector according to the present invention and its mounting method, and FIG. 2 is a diagram showing another example of the configuration.

Figure 1 shows the case of a connector with a hard and brittle insulator, in which (A) is an overall configuration diagram before mounting, (B) is a cross-sectional view of (A) viewed from the direction of arrow a, and (C) is a A cross-sectional view showing a state in the middle of mounting, and (D) a diagram showing a state after mounting.

It is composed of an insulator 12 that is U-shaped in plan view and has the same thickness, and a plurality of plug terminals 13 that are inserted and fixed in alignment at predetermined positions of the insulator 12. The contact 13a of the plug terminal 13 remains straight.

In particular, this insulator 12 has protrusions 12a on both sides.
Guide grooves 12b are formed on both sides in the width direction, and are inclined at an angle α from the side on the contact 13a side to the surface in the thickness direction.

Further, the board 5 on which the plug connector 11 is mounted is the one explained in FIG.
is formed by patterning.

On the other hand, the contact holder 14 is made of an insulating material and has the same thickness as the insulator 12 and has a U-shape in plan view with the width direction of the insulator 12 as its inner dimension. A linear protrusion 1 having a size that allows it to fit into the guide groove 12b and slide smoothly from the tip sides of both inner surfaces towards the back.
4b is formed with the same angle α as the guide groove 12b, but this linear projection 14b is formed with the same angle α as the guide groove 12b.
4 by aligning its linear protrusion 14b with the guide groove 12b as shown by the arrow. They are formed on both sides of the film in the thickness direction so that they are substantially flush with each other.

Further, on the side near the tip of the linear protrusion 14b on the central side 14c of the contact holder 14, the contact 1 described above is attached.
3a, that is, square grooves 14d having a width slightly larger than the width W of the contact 13a and a depth similar to the thickness t of the contact 13a are formed in parallel at respective positions corresponding to the connection electrodes 5a of the substrate 5. has been done.

This means that when the contact holder 14 is fitted to the insulator 12 in the manner described above, each of the straight contacts 13
This means that the tip of a is positioned by each square groove 14d.

Therefore, as shown in (B), the plug connector 11 is mounted on the board 5 so that the surface of the guide groove 12b of the plug connector 11 closest to the innermost part faces the board 5, and the connector 11 is placed on the connection electrode 5a of the board 5. Contact holder 1 after applying solder paste
4 is inserted with its linear protrusion 14b and guide groove 12b aligned, the contact holder 14 gradually approaches the substrate 5 by the guide groove 12b and linear protrusion 14b, and at the same time is positioned by the square groove 14d. Each contact 13
A is bent and deformed from its tip toward the substrate surface.

(C) represents the state at this point.

Next, when the contact holder 14 is further inserted, the holder 14 comes into contact with the substrate 5 and stops, but at this time, as shown in (D), each contact 13a has the same shape as when it is offset bent. It is deformed and pressed against the surface of the connection electrode 5a.

In case 2, since the contact holder 14 can only move in the direction of the angle α with respect to the insulator 12, the contact holder 14 can be fixed to the insulator 12 and eventually to the substrate 5 without providing a special locking mechanism. Are you able to maintain reliable contact?

Therefore, the two can be connected by soldering through a normal predetermined heating process.

In particular, in a surface mount type connector having such a configuration, each contact 13a is positioned from the tip by each square groove 14d, so there is no need to offset and bend the contact 13a in advance as in the conventional case, and there is no need for each contact 13a to be deformed. Even if it is bent, it can be automatically corrected to a position corresponding to the connection electrode 5a of the substrate 5 without manual correction or the like, so it can be expected to improve productivity.

Figure 2 shows the case of a connector made of an insulator or a soft elastic material such as nylon or PET (polyethylene terephthalate resin), where (a) is an overall configuration diagram, and (b) is an arrow pointing to (a). It is a cross-sectional view seen from the a direction, (C) is a cross-sectional view showing a state in the middle of mounting, and (d) is a diagram showing a state after mounting.

In FIGS. 2(a) and 2(b), the plug connector 21 is connected to the first
Similar to the plug connector 11 shown in the figure, an insulator 22 having the same thickness and a U-shape in plan view, and a plurality of plugs described in FIG. It is configured as a terminal 13.

Note that the board 5 on which the plug connector 21 is mounted is the one described in FIG.

In particular, this insulator 22 has contacts 13 on both sides thereof.
A plurality (four in the figure) of linear protrusions 22a with the thickness direction as the longitudinal direction are formed in parallel near the a-side end, and hinge portions are provided on both longitudinal sides of the contact protruding surface 22b. At 22c, a contact holder 23 which can be freely opened and closed with respect to the several faces 22b is integrally molded. Note that the hinge portion 22C in this case can be easily realized by forming the thickness of this portion into a thin linear shape.

Then, on the long side of the free end of the holder 23, square grooves 23a having the same size as the square grooves 15d explained in FIG. It is formed.

Further, on both sides of the contact holder 23 in the longitudinal direction, there are fixed pieces 23b projecting from the holder 23 at a substantially right angle.
is formed, and when the holder 23 is bent in the direction of the arrow R, it is caught by either the inwardly protruding claw 23c provided at the tip of the fixing piece 23b or the plurality of linear protrusions 22b mentioned above. The holder 23 can be fixed at that position.

Therefore, after attaching the plug connector 21 to the board 5 and applying solder paste on the connection electrode 5a, the contact holder 2
When the contact 13a is rotated in the R direction, the tip of the contact 13a is positioned by the corresponding square grooves 23a of the holder 23, and the contact 13a is rotated in the R direction, as shown in (C).
3a is pressed against the substrate 5 side by the square groove 23a and deforms.

Next, when the contact holder 23 is further rotated (d
), the square groove 23a of the holder 23 has a contact hole H.
3a is pressed against the connection electrode 5a of the substrate to ensure stable contact. At this time, the claw 23c of the fixing piece 23b is caught on the linear protrusion 22b and fixed, thereby maintaining reliable contact. be able to.

In this case, each contact 13a as in the case of FIG.
Since the tip of each contact 13a is positioned by each square groove 23a, even if each contact 13a is deformed or bent, it will be automatically corrected to a position corresponding to the connection electrode 5a of the substrate 5.

Therefore, solder connection between the two can be easily achieved through a normal heating process.

Note that the same effect can be obtained by molding the above-mentioned contact holder 23 separately from the insulator 22 and configuring the hinge portion with a round pin, for example.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to provide a surface mount type connector that improves productivity by facilitating connection work during mounting.

Although the present invention has been described with reference to a case where a plug connector is mounted on a board, it is clear that the same effect can be obtained even when a shack connector is mounted on a board instead of a plug connector.

[Brief explanation of drawings]

Fig. 1 is a diagram illustrating an example of the surface mount type connector according to the present invention and its mounting method, Fig. 2 is a diagram illustrating another configuration example, and Fig. 3 is a diagram illustrating a conventional surface mount type connector and its mounting method. The figure shown is, . In the figure, 5 is a substrate, 5a is a connection electrode, 11.21 is a plug connector, 12.22 is an insulator, 12a is a protrusion, 12b is a guide groove, 13 is a plug terminal,
13a is a contact, 14 and 23 are contact holders, 1'4a are side edges, 14b and 22a are linear protrusions, 14c is a center edge, 14d and 23a are square grooves,
22b is a contact protruding surface, 22c is a hinge portion, 23b
23c represents a fixed piece, and 23c represents a claw.

Claims (1)

[Claims] (1) A contact (13) whose one end is connected to the substrate (5)
A) is a surface mount type connector in which a plurality of terminals (13) formed in a) are insulated and held so that the contacts (13a) are aligned in a line, and an insulator constituting the surface mount type connector. is a means for positioning the tip of the contact (13a) corresponding to the connection electrode (5a) of the substrate (5), and a means for pressing the tip of the contact after positioning against the connection electrode (5a). A surface-mounted connector characterized by comprising at least a contact holder. (2) The positioning means for the contact tip includes a contact positioning corner formed on the surface facing the substrate of the contact holder movable toward the substrate so as to correspond to the connection electrode (5a) on the substrate. Claim 1 characterized by comprising a groove.
Surface mount connector as described. (3) The pressing means at the tip of the contact is made of an insulator (1
2) Guide grooves (12b) provided on the outer surfaces of both longitudinal walls that face diagonally toward the substrate, and guide grooves (12b) that face the same direction on the inner surfaces of the side walls of the contact holder (14) formed corresponding to the outer surfaces of the side walls. 2. The surface mount type connector according to claim 1, further comprising a linear protrusion (14b) that fits into the guide groove (12b) provided in the same manner. (4) The pressing means at the tip of the contact is made of an insulator (2
2) Fixing formed on both longitudinal ends of the contact holder (23) which can be opened and closed with respect to the contact protruding surface (22b) by a hinge portion (22c) provided on one long side of the contact protruding surface (22b). The claw (23c) of the piece (23b),
When the contact holder (23) is moved in the closing direction, the claw (23c) of the contact holder (23)
2. The surface mount type connector according to claim 1, further comprising a plurality of linear protrusions (22a) provided near the contact side ends of both side surfaces of the insulator (22) so as to be hooked thereto.