JPH07240246A - Board mounting type electric connector - Google Patents

Abstract

PURPOSE:To obtain a board mounting type electric connector structured to be protected so that a fixing metal plate to be mounted on a housing side wall is prevented from being deformed. CONSTITUTION:Each board mounting type electric connector 10 is equipped with a metal plate 13 for fixing a housing on a plate protection part 12 on the side wall of a housing 11. The plate protection part 12 is provided with an external wall 22 positioned to surround a metal plate 13. The metal plate 13 is provided with a soldering part 19 to be soldered and connected to traces on a printed circuit board. The end part 21 of the soldering part 19 is not projected to the outside from the external surface 23 of the housing 11, therefore, even if board mounting type electric connectors 10 are arranged in the lateral direction, the metal plates 13 make no mutual interference.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to electrical connectors, and more particularly to board mounted electrical connectors which are electrically connected to traces on a printed circuit board.

[0002]

2. Description of the Related Art Conventionally, a board mounting type electrical connector (hereinafter simply referred to as "electrical connector") of a type in which a metal plate for fixing a connector housing is provided on a housing side wall and the metal plate is soldered to a trace on a circuit board to fix the housing. Also known as a connector).

As an example of this type of finished connector,
There is an electrical connector described in the 5-23429 publication. Figure 4
A cross-sectional view of this electric connector 100 is shown in FIG. The electrical connector 100 has a metal plate 101 on the side wall. The soldering portion 102 of the metal plate 101 is aligned and soldered and fixed on an appropriate trace on the printed circuit board. At the same time, the solder connection portion 104 of each terminal 103 is also soldered at an appropriate position and electrically connected.

The metal plate can be accessed by heating means such as infrared rays during the soldering connection, the soldering result can be visually confirmed, and a sufficient contact area for the soldering connection can be secured. As required, in many prior art examples, including the example described above, the metal plate extends out of the housing of the electrical connector.

Further, the metal plate is required to be easily attached to the housing during assembly.

[0006]

This type of electrical connector may be arranged side by side in a row in the lateral direction during assembly or the like. At that time, the metal plate extending to the side of the electric connector mutually interferes with the metal plate of the adjacent electric connector, and the metal plate is deformed. This deformation causes problems such as insufficient fixing strength during mounting on a printed circuit board, which has been a problem.

An electrical connector having a metal plate having a shape designed to suppress this deformation is disclosed, for example, on pages 251 and 259 of the 1993 product catalog of Japan Molex. The soldered portion of the metal plate extends along the bottom surface of the housing to the outside of the housing, and its tip is bent substantially vertically and extends upward. However, although the metal plate of this shape suppresses the interference of the soldering part, the deformation of the metal plate cannot be completely suppressed because the plate surfaces facing upward are contacted, and since the shape is special, When soldering, the position of the electrical connector was displaced due to flux rising, which was a problem.

As described above, there has been a demand for an electrical connector having a structure in which the metal plates arranged on the side wall of the housing do not interfere with each other and the metal plates are protected from being deformed.

[0009]

DISCLOSURE OF THE INVENTION The present invention is a circuit board mounting comprising a metal plate having a soldering portion to be soldered and connected on a printed circuit board and a mounting portion to be mounted and supported on a housing on the side wall of the housing. In the type electrical connector, an outer wall that surrounds the mounting portion of each metal plate from both sides is formed on the side wall of the housing, and the end portion of the soldering portion is located substantially inside the outer surface of the outer wall. To do.

A metal plate is fixedly arranged on the side wall of the electrical connector of the present invention. The metal plate has a mounting portion fixed to the housing and a soldering portion soldered to the substrate. The soldered portion is bent and formed in a substantially right-angled direction from the surface of the mounting portion, and extends outward. The housing has a plate protector near the side wall. The plate protector is formed to hold the metal plate and surround and protect the metal plate. Therefore, the end of the soldering portion of the metal plate is arranged so as to be located on the same surface as the outer surface of the plate protecting portion of the housing or inward of the outer surface (that is, substantially inside the outer surface), and the soldering portion projects outward There is no such thing. The outer wall of the plate protector is arranged so as to surround the metal plate. Therefore, even if the electrical connectors are arranged side by side, the adjacent metal plates do not interfere with each other.

Further, a shelf is formed on the bottom surface of the plate protection portion of the housing by raising the bottom if necessary. That is, the outer wall of the plate protection portion has a bottom end above the bottom surface of the housing. This prevents the electrical connector housing from interfering with the metal plate of the laterally adjacent electrical connector.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings.

1 and 2, there are shown respective preferred electrical connectors 10 and 26 of the present invention. The electrical connector 10 of FIG. 1 has a housing 11 as shown in FIGS. 1 (a) and 1 (b).
A metal plate 13 is arranged on the plate protection portion 12 near the side wall, and a plurality of terminals (contacts) 14 are arranged between the pair of plate protection portions 12.

The shape of the terminal 14 is shown in FIG. Each of the terminals 14 has a press-fitting portion 15 having a protrusion for press-fitting and fixing in the housing 11, a leg 16 extending substantially vertically from the bottom end of the press-fitting portion 15 in a lateral direction, and a stepwise shape formed at the tip of the leg 16. The spring contact portion 18 that extends laterally from the vicinity of the roots of the solder connection portion 17 and the press-fitting portion 15 and that extends upward and has elasticity.
Have. An inclined surface (tapered surface) is formed at the tip of the spring contact portion 18. In the terminal 14, the press-fitting portion 15 is press-fitted into the housing 11 and the leg is fixed by abutting on a part of the housing 11. As a result, the spring contact portion 18 is elastically arranged in the lateral direction. The solder connection part 17 of the terminal 14 is a metal plate
It is soldered to a trace (not shown) on the printed circuit board together with the soldering portion 19 of 13. When the terminal 14 is arranged in the housing 11, the spring contact portion 18 is arranged substantially inside the housing. The housing top surface is formed so as to cover the top of the spring contact portion 18.

The metal plate 13 has a press-fitting portion (mounting portion) 20 for being press-fitted and fixed in the plate protecting portion 12 of the housing 11. The press-fitting portion 20 is formed by bending at a right angle to the soldering portion 19.

The plate protection portion 12 of the housing 11 is formed so as to receive the press-fitting portion 20 of the metal plate 13 and surround the metal plate 13. That is, the outer wall 22 of the plate protection portion 12 covers the press-fitting portion 20 and extends toward the center. Further, the outer side surface 23 and the end portion 21 of the soldering portion 19 of the metal plate 13 are arranged so as to be substantially flush with each other, and the end portion 21 does not project outward from the outer side surface 23.

Therefore, even if the electrical connectors 10 of FIG. 1 are arranged in a row in the lateral direction, the plate protecting portion of the housing 11 is provided.
Only the outer walls 22 of the 12 contact each other, and the metal plates 13 do not interfere with each other and are deformed.

Further, as shown in FIG. 1B, the electrical connector 10 has a shelf portion 24 which is raised to the bottom side of the plate protection portion 12. That is, a space is formed on the bottom side of the plate protection unit 12.

Accordingly, even if the housing 11 of the laterally adjacent electric connector 10 enters between the pair of opposing outer walls 22 of the plate protection portion 12 of the electric connector 10, the housing 11 interferes with the metal plate 13 and the metal plate It does not hurt.

The electrical connector 10 is, as shown in FIG.
Since the upper side of the soldering portion 19 of the metal plate 13 is in the open state, the soldering connection can be made by heating means such as infrared rays, and the soldering can be visually confirmed.

FIG. 2 shows a plate protecting portion 25 having a shape substantially similar to the plate protecting portion 12 of the electric connector 10 and an electric connector 26 having a substantially identical metal plate 13. The effects of the plate protection portion 25 of the housing 27 and the metal plate 13 are substantially the same as those of the electrical connector 10.

The electrical connectors 10 and 26 are formed so that they can be fitted to each other. That is, the printed circuit boards are connected to each other by fitting them together. The electrical connector 26 receives two types of terminals 28 and 29 having different shapes. The terminals 28 and 29 are both formed of a metal plate having less elasticity. The terminal 28 is placed in the housing 27 by press fitting from the fitting surface side and the terminal 29 from the side opposite to the fitting surface. The terminal 14 of the electrical connector 10 has a contact portion 30 of a terminal 28 on one side and a contact portion of a terminal 29 on the opposite side.
It contacts 31 and is electrically connected. Solder connection parts 32 and 33 are formed at the ends of the terminals 28 and 29 on the substrate surface side, respectively. Due to the characteristic shape of these terminals 14, 28, 29, a connection having a long effective mating length and resistance against twisting is realized.

FIG. 3 shows another embodiment of the present invention, which is shown in FIG.
And an electrical connector 3 similar to the electrical connectors 10, 26 of FIG.
4, 35 are shown. 3 (a), 3 (b) electrical connector 3
The terminals used for 4 and 35 are substantially the same as those used for the electrical connectors of FIGS. 1 and 2, respectively. The metal plates 13 are also substantially the same, and the press-fitting portions 20 are fixed and arranged in the plate protecting portions 38 and 39 of the housings 36 and 37, respectively.

Plate protector 38 of electrical connectors 34, 35,
The outer walls 40, 41 of 39 cover the press-fitting portion and extend to the center and are formed wide. Therefore, the end portion 21 of the soldering portion 19 of the metal plate 13 is located inside the outer side surfaces 42 and 43 of the plate protecting portions 38 and 39. Although not shown, shelves are formed on the bottoms of the plate protecting portions 38 and 39, similarly to the electrical connectors 10 and 26.

It should be noted that the above-mentioned embodiments are merely examples, and do not limit the present invention. Various modifications can be made by those skilled in the art without departing from the gist of the present invention. For example, as shown in FIG. 4, a post for alignment may be provided on the bottom surface of the housing.

[0026]

In the board-mounted electrical connector of the present invention, the metal plate for fixing the housing is surrounded and protected by the plate protecting portion of the housing. Therefore, in the manufacturing process such as assembling, the metal plate is laterally arranged. However, the metal plates do not interfere with each other.

Therefore, the metal plate is prevented from being deformed, and defects caused by mounting the metal plate are suppressed.

The board-mounted electrical connector of the present invention is
Interference between the metal plate and the adjacent electric connector housing is also prevented, and the deformation of the metal plate is prevented more reliably.

[Brief description of drawings]

FIG. 1A is a plan view, FIG. 1B is a side view, and FIG. 1C is a partial sectional view of an electric connector according to an embodiment of the invention.

FIG. 2A is a plan view, FIG. 2B is a side view, and FIG. 2C is a partial cross-sectional view of an electric connector according to another embodiment of the present invention.

FIG. 3 is a plan view of an electrical connector of still another embodiment of the present invention. (A), (b) shows another electric connector, respectively.

FIG. 4 is a partial cross-sectional view showing an example of a conventional board-mounted electrical connector.

[Explanation of symbols]

 10, 26, 34, 35 Board Mounted Electrical Connector 11, 27, 36, 37 Housing 13 Metal Plate 19 Solder Part 21 End 23, 42, 43 Outer Side

Claims (1)

[Claims] 1. A board mounting type electrical connector comprising a metal plate having a soldering portion soldered on a printed circuit board and a mounting portion mounted and supported by a housing, wherein the housing side wall is provided. An outer wall that surrounds the mounting portion of each metal plate from both sides is formed, and the end of the soldering portion is located substantially inside the outer surface of the outer wall.