Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Fusible element actuated
Reexamination Certificate
2000-05-18
2003-01-28
Vortman, Anatoly (Department: 2835)
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
Fusible element actuated
C337S188000, C337S187000, C337S161000, C361S626000, C361S646000
Reexamination Certificate
active
06512443
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Technical Field to which the Invention Belongs
The present invention relates to a large current fuse for direct coupling to a power source which can be directly coupled to a battery.
2. Related Art
Generally, a battery is mounted inside a body of an automobile as a supply source of electric power, and a large current fuse is electrically connected to a battery post of the battery by way of power source side terminal. An example of general large current fuses is illustrated in FIG.
13
.
As shown in
FIG. 13
, the large current fuse
80
includes a fuse body
83
which connects a first terminal
82
to a power source side terminal
81
, and a resin case
84
which covers an outer face of the fuse body
83
. The fuse body
83
includes a connecting hole (not shown) formed in one end thereof, a fusible member
85
arranged at an intermediate portion, and a stud bolt
86
which is provided so as to project from the other end thereof. A power source side stud bolt
81
a
provided in the power source side terminal
81
is inserted into the connecting hole, and a nut
87
is screwed onto the power source side stud bolt
81
a
. The fusible member
85
is adapted to fuse by self heating only when an excess current flows. The first terminal
82
is fixed to the stud bolt
86
by screwing a nut
88
.
In order to minimize a distance (protruding allowance) d of the large current fuse
80
protruding from an outer face
89
b
of the battery
89
after the large current fuse
80
has been assembled to a battery post
89
a,
the large current fuse
80
is formed in an L-shape so as to extend along the battery
89
. A second terminal
90
may be co-clamped to the power source side stud bolt
81
a
of the power source side terminal
81
together with the large current fuse
80
.
However, when the large current fuse
80
has been. assembled to the battery post
89
, the stud bolt
86
is directed laterally, therefore connecting workability of the first terminal
82
to the large current fuse
80
is deteriorated. Moreover, since the large current fuse
80
is formed in L shape, there is a drawback that the second terminal
90
which is co-clamped to the power source side terminal
81
together with the large current fuse
80
is restricted by a bent portion
80
a
of the large current fuse
80
. Although this drawback may be overcome by making a linear part
91
a
of the large current fuse
91
longer as shown in
FIG. 14
, it has been disadvantageous that the protruding distance d′ of the large current fuse
91
becomes longer.
SUMMARY OF THE INVENTION
In view of the above described problems, it is an object of the invention to provide a large current fuse for direct coupling to a power source in which the connecting workability of the first terminal to the large current fuse will be improved and a degree of freedom of the terminal to be co-clamped with the power source side terminal will be enhanced.
In order to attain the above described object, the invention is embodied by a large current fuse adapted to connect a power source side terminal attached to a battery post of a battery to at least one terminal, said fuse comprising:
a fuse body including:
a power supply terminal plate in substantially rectangular shape, one end of said power supply terminal plate being connectable to said battery post; and
at least one connecting terminal plate located in a direction perpendicular to a first direction with respect to said power source side terminal plate, said first direction defined by said fuse body elongating from said battery post; and
at least one fusible member connecting said power supply terminal plate to said at least one connecting terminal plate, respectively;
wherein an imaginary line extends along the other end of said power supply terminal plate and is substantially perpendicular to said first direction, said at least one connecting terminal plate is positioned at same side as said power supply terminal plate with respect to said imaginary line, and a outer peripheral edge of said connecting terminal plate is substantially along said imaginary line.
The large current fuse for direct coupling to the power source is further characterized in that the connecting terminal plate is positioned on a same plane as the power supply terminal plate so that terminals can be co-clamped to the power source side terminal with the power supply terminal plate, and that the connecting terminal plate has a stud bolt which projects in a direction opposite to a direction of mounting the power source side terminal on the battery post so as to connect the other terminals thereto.
As described above, the large current fuse for direct coupling to the power source is composed of the fuse body and the resin case which partially covers the fuse body. The fuse body consists of the power supply terminal plate in a rectangular shape, and the connecting terminal plate which is integrally formed with at least one side of both sides of the power supply terminal plate in a longitudinal direction thereof by way of the fusible member. The power supply terminal plate and the connecting terminal plate are positioned at the same side with respect to an extension line extending along the other end of the power supply terminal plate, and a portion of an outer peripheral edge of the connecting terminal plate is substantially along the extension line. Therefore, when the large current fuse has been assembled to the battery post, the distance of the large current fuse protruding from the battery becomes shorter than in the conventional example.
As described above, the connecting terminal plate is positioned on the same plane as the power supply terminal plate and has the stud bolt which projects in a direction opposite to a direction of mounting the power source side terminal on the battery post. Therefore, the large current fuse is flat in shape (flat shaped) as compared with the conventional large current fuse. Moreover, even after the large current fuse has been assembled, the stud bolt of the connecting terminal plate projects upward from the above described same plane.
REFERENCES:
patent: 5034620 (1991-07-01), Cameron
patent: 5643693 (1997-07-01), Hill et al.
patent: 5645448 (1997-07-01), Hill
patent: 5748068 (1998-05-01), Kiyota
patent: 5877609 (1999-03-01), Carter
patent: 5886611 (1999-03-01), Schaller et al.
patent: 6294978 (2001-09-01), Endo et al.
patent: 0699565 (1996-03-01), None
patent: 0884750 (1998-12-01), None
patent: 11-41751 (1999-02-01), None
Inaba Shigemitsu
Matsumura Norio
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