Electrical connectors – With insulation other than conductor sheath – Plural-contact coupling part
Reexamination Certificate
2001-10-18
2003-04-22
Ta, Tho D. (Department: 2833)
Electrical connectors
With insulation other than conductor sheath
Plural-contact coupling part
C439S083000, C439S856000, C439S224000, C439S065000
Reexamination Certificate
active
06551143
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a battery connector, and more specifically, to a battery connector used for engagement and connection to a mating connector mounted on a circuit board.
DESCRIPTION OF THE PRIOR ART
Generally, batteries contained in portable telephones consist of one of two types of configurations. These configurations consist of battery packs in which batteries are contained in the back cover of portable telephones, and batteries that are separately disposed on the side of the back cover of portable telephones. The batteries are connected to a circuit board disposed inside the main body of the portable telephone by engaging and connecting a battery connector connected to the batteries to a mating connector mounted on the circuit board.
One conventional battery connector of this type is shown in
FIG. 7
(see Japanese Patent Application Kokai No. H7-192797). The battery connector
100
has a housing
110
having a plurality of contact accommodating cavities
111
. A plurality of contacts
120
is attached inside the contact accommodating cavities
111
. Each of the contacts
120
, formed by stamping and bending a metal plate, has a plate-form base part
121
fastened in the housing walls of the contact accommodating cavity
111
.
A board connection part
122
is connected by means of soldering to a circuit board (not shown) that is connected to the battery and extends from the lower part of the rear end of the base part
121
. A contact part
123
contacts a tab-form mating contact (not shown) of a mating connector and extends from the lower part of the front end of the base part
121
. The board connection part
122
has a flat-plate part
124
. The flat plate part extends rearward from the lower part of the rear end of the base part
121
and is bent in a direction that is substantially perpendicular to the base part
121
. The board connection part
122
also has a leg part
125
that extends rearward from the lower end of the flat-plate part
124
and is connected by soldering to the circuit board.
The contact part
123
has an elastic spring part
126
that extends diagonally to the outside of the plane of thickness of the base part
121
from the lower part of the front end part of the base part
121
. A tip end part
128
is bent toward the opposite side from the contact surface of the elastic spring part
126
. The tab-form mating contacts of the mating connector enter the interiors of the contact accommodating cavities
111
formed in the housing
110
. The mating contacts elastically contact the contact surfaces
127
of the contact parts
123
of the contacts
120
. As a result, the battery and the circuit board (not shown) on the mating side are electrically connected.
Because the leg parts
125
, which constitute the soldering parts of the contacts
120
, are bent from the lower ends of the flat-plate parts
124
that extend from the lower parts of the rear ends of the plate-form base parts
121
that have a relatively large area, the soldering area available for the circuit board is relatively small, causing the soldering strength to be low. Hence, the battery connector
100
may come loose from the circuit board as a result of an impact caused by dropping, etc. Further, attaching separate reinforcing members (not shown) to the housing
110
requires that the reinforcing members be soldered to the circuit board thereby requiring an increase in area occupied by the battery connector
100
on the board. Because the soldering positions of the leg parts
125
are biased with respect to the center, in the short direction on the bottom surface of the battery connector
100
, the balance of the soldering positions with respect to the battery connector
100
is also poor. In cases where the mating connector is engaged from the front, there is a danger that the front end side of the housing
110
will float.
It is therefore desirable to develop a battery connector where the soldering strength of the contacts with respect to the circuit board is increased so that no separate reinforcing members are required. It is also desirable to have a battery connector in which the area occupied by the battery connector on the board can be reduced, and in which the balance of the soldering positions on the bottom surface of the connector can be improved.
SUMMARY OF THE INVENTION
This invention relates to a battery connector equipped with an insulating housing. Contacts are attached to the housing and are soldered to a circuit board. Each of the contacts has a flat-plate-form base part and a pair of side wall parts that rise from both sides of the base part. A pair of contact arms extend, facing each other, from the side wall parts of the pair of side wall parts, and contact mating contacts. The bottom surface of the base part forms a soldering surface that is soldered to the circuit board.
REFERENCES:
patent: 1622631 (1927-03-01), Fahnestock
patent: 4193660 (1980-03-01), Jaconette
patent: 5549480 (1996-08-01), Cheng
patent: 5551883 (1996-09-01), Davis
patent: 5984694 (1999-11-01), Sinclair
patent: 6024613 (2000-02-01), Mashiyama et al.
patent: 6123587 (2000-09-01), Beloritski et al.
patent: 6171126 (2001-01-01), Wu et al.
patent: 6267629 (2001-07-01), Nguyen et al.
Kodaira Kazuaki
Tanaka Kaoru
Ta Tho D.
Tyco Electronics AMP K.K.
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