Electrical connectors – With circuit component or comprising connector which fully... – Connector includes or covers additional component
Reexamination Certificate
2001-11-26
2003-05-06
Bradley, P. Austin (Department: 2833)
Electrical connectors
With circuit component or comprising connector which fully...
Connector includes or covers additional component
C439S251000, C439S830000, C337S290000, C337S295000
Reexamination Certificate
active
06558198
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a fuse device mounted in an electrical connection box used, for example, in a vehicle to prevent an overcurrent from flowing into electrical circuits built in the electrical connection box.
Known conventional fuse devices of the aforementioned type are shown in
FIGS. 13 and 14
. The fuse device of
FIG. 13
is constructed such that a fusing element
300
has connection terminals
301
thicker than the fusing element
300
connected at the opposite ends thereof and the fusing element
300
and the connection terminals
301
are covered by an insulating resin member
302
except leading end portions of the connection terminals
301
. The fusing element
300
and the connection terminals
301
are formed by stamping out a single metallic plate having a portion corresponding to the fusing element
300
adjusted to a smaller thickness. This fuse device is mounted in an electrical connection box by connecting the connection terminals
301
thereof with unillustrated busbars provided in the electrical connection box.
On the other hand, a fuse device of
FIG. 14
is constructed such that each of two fusing elements
310
has a common connection terminal (input terminal)
311
thicker than the fusing element
310
connected at one end thereof and has two separate connection terminals (output terminals)
312
having the same thickness as the connection terminal
311
connected at the other end thereof, and the respective fusing elements
310
and connection terminals
311
,
312
are covered by an insulating resin member
313
except leading end portions of the connection terminals
311
,
312
. The fuse device includes a pair of pieces each including two fusing elements
310
, one connection terminal
311
and two connection terminals
312
. The fusing element
310
and the connection terminals
311
,
312
are formed by stamping out a single metallic plate having portions corresponding to the fusing elements
310
adjusted to a smaller thickness. Similar to the above fuse device of
FIG. 13
, this fuse device is mounted in an electrical connection box by connecting the connection terminals
311
,
312
thereof with unillustrated busbars provided in the electrical connection box.
Since the unitary piece of the fusing element(s) and the connection terminals forming the conventional fuse devices is formed by stamping out the single metallic plate as described above, there is a limit in adjusting the fusing characteristic of the fusing element and the strength of the connection terminals without influencing each other.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a fuse device and fuse connecting structure which are free from the problems residing in the prior art.
According to an aspect of the invention, a fuse device is provided with connection terminals; and a fuse main body including fuse terminals and a fusing element whose opposite ends are connected with the fuse terminals. The fuse terminals are directly connected with the respective connection terminals to form a fuse circuit in which the fusing element is between the connection terminals.
The device makes it possible to adjust the fusing characteristic of the fusing element and the strength of connection terminals without influencing each other.
These and other objects, features and advantages of the present invention will become more apparent upon a reading of the following detailed description and accompanying drawings.
REFERENCES:
patent: 4563666 (1986-01-01), Borzoni
patent: 4661793 (1987-04-01), Borzoni
patent: 4878862 (1989-11-01), Wise
patent: 5088940 (1992-02-01), Saito
patent: 5346411 (1994-09-01), Nikkinen
patent: 5507669 (1996-04-01), Jannett et al.
patent: 5748067 (1998-05-01), Ishii et al.
patent: 5841338 (1998-11-01), Yasukuni
patent: 5886611 (1999-03-01), Schaller et al.
patent: 5977859 (1999-11-01), Kawamura et al.
patent: A 59-23430 (1984-02-01), None
patent: A 61-142623 (1986-06-01), None
patent: A 1-241729 (1989-09-01), None
patent: A 2000-182506 (2000-06-01), None
Isshiki Isao
Kobayashi Takehito
Onizuka Takahiro
Autonetworks Technologies Ltd.
Bradley P. Austin
Hammond Briggitte R.
Oliff & Berridg,e PLC
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