Electrical connectors – With supporting means for coupling part – Flange on coupling part
Reexamination Certificate
2000-04-07
2001-10-23
Sircus, Brian (Department: 2839)
Electrical connectors
With supporting means for coupling part
Flange on coupling part
C439S566000, C439S108000
Reexamination Certificate
active
06305976
ABSTRACT:
FIELD OF THE INVENTION
This invention concerns an electrical connector, and in particular an electrical connector for installation on circuit boards.
BACKGROUND OF THE INVENTION
The electrical connectors for installation on circuit boards of the prior art have, in the case of small electrical connectors, been fixed in place on the circuit board by soldering the contact tines to conducting pads of the circuit board. However, in the case of large connectors, or when it is desired to increase the installation strength, a separate solder peg is provided on the electrical connector. By soldering this solder peg onto the circuit board, the installation strength is increased. As one example of this,
FIG. 9
is a cross-sectional diagram of a surface-mounted connector disclosed in Japanese laid-open utility model application Hei5-23429. This surface mounted connector
100
has slots
104
on both ends of its insulating housing
102
, and in these slots
104
is inserted and fixed in place a metal fastener
106
with an L-shaped cross-section. The soldering part
108
of the fastener
106
extends in a lateral direction of the insulating housing
102
; with this part it is soldered onto the circuit board (not shown) and fixed in place. Confirmation of the satisfactory state of this soldering is performed by visual inspection from outside of this extended soldering part
108
.
In the case of the electrical connector
100
disclosed in laid-open utility model application Hei5-23429 which is an example of the prior art, the width of the electrical connector
100
is large, and moreover the fastener
106
extends in a lateral direction and requires a large mounting area.
SUMMARY OF THE INVENTION
The present invention was devised in light of the above problem. An object of the present invention is to provide an electrical connector having a housing size which can be reduced, and the mounting area for which is small when installed on a circuit board.
Another objective of the invention is to provide an electrical connector which, while having a small housing width, can guide the other connector during mating.
Still another objective of the invention is to provide an electrical connector such that, when fixing in place by soldering to the circuit board, the state of the soldering can be confirmed, and moreover repair of the soldering part is also possible.
The electrical connector of the present invention has multiple contacts, a housing to retain said contacts, and solder pegs to solder and fix into place said housing on a circuit board. The housing has mounting holes on both sides of said housing for vertical insertion and fixing of the solder pegs onto the circuit board, and the solder pegs are formed in an approximately planar shape. The solder pegs are soldered and fixed in place on the circuit board at a fracture plane of the tip of the solder peg.
Vertical insertion and fixing in place with respect to the circuit board also includes cases of insertion and fixing in place with some degree of inclination, in which the angle is not exactly 90° with respect to the circuit board.
Moreover, the mounting holes of the electrical connector of this invention may be linked with the mating aperture of the housing to accept a mating connector, and one surface of the solder pegs which is inserted and fixed into place in the mounting holes may be approximately in the same plane as a side wall delineating the mating aperture.
Further, the mounting holes of the electrical connector of this invention may be opened to the outside in proximity to the circuit board on which the connector is mounted.
The housing of the electrical connector of this invention has mounting holes on both sides for the vertical insertion and fixing in place of solder pegs with respect to the circuit board. The solder pegs have an approximately planar shape, and are soldered and fixed in place on the circuit board at a fracture plane of the tip of the solder peg, so that the width of the housing in the solder peg arrangement direction can be reduced. Further, soldering to the circuit board is performed only in the extremely small surface area of the pegs, so that there is the added advantage that the area occupied on the circuit board when mounting can be reduced.
The mounting holes are linked to the aperture of the housing for mating with the other connector, and one surface of the solder pegs inserted into and fixed in place in the mounting holes is in the same plane as a side wall delineating the mating aperture, so that the size of the electrical connector can be reduced, and in addition when the mating connector has been accepted in the mating aperture, the mating connector can be guided.
Also, the mounting holes are opened to the outside in the proximity of the circuit board on which the connector is mounted, so that the installed state of the soldered solder pegs can be visually inspected from outside to prevent the occurrence of defective items, and when soldering is inadequate, a soldering iron can be used from outside to repair the soldering part. Further, there is the advantage that, if the need arises to remove the electrical connector from the circuit board, similarly a soldering iron can be applied from outside to the soldering part, to melt the solder and remove the connector.
REFERENCES:
patent: 4693528 (1987-09-01), Asick et al.
patent: 4826442 (1989-05-01), Douty et al.
patent: 4969829 (1990-11-01), Sato
patent: 5080611 (1992-01-01), Hypes
patent: 5096440 (1992-03-01), Katsumuta
patent: 5184963 (1993-02-01), Ishikawa
patent: 5549481 (1996-08-01), Morlion et al.
Japanese laid-open utility model application Hei 5-23429, Mar. 1993.
Futatsugi Takashi
Tsuji Junya
AMP (Japan) Ltd.
Nguyen Son V.
Sircus Brian
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