JP4151327B2 - Battery fuse unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a battery fuse unit, and more particularly, to electrically connect a battery fuse housed in a box mounted on an upper part of a battery without a battery post and an electric wire.
[0002]
[Prior art]
Conventionally, as shown in FIG. 8, a fuse connected to a battery of an automobile has a lead wire 4 connected to a battery terminal 3 connected to a post 2 of the battery box 1, and the lead wire 4 is wired to a fuse box 5. The fuse box 5 is connected to a fuse (not shown) accommodated in the fuse box 5.
[0003]
[Problems to be solved by the invention]
However, if the battery box 1 and the fuse box 5 are arranged at a distance from each other and connected by the lead wire 4, the connection position becomes two places, which requires a lot of work and requires installation space for the fuse box 5 and the number of parts. There is also the problem of an increase. Furthermore, if an external force is applied to the lead wire, the lead wire may be damaged.
[0004]
The present invention has been made in view of the above problems, and connects a battery fuse to a battery post without using a lead wire, and can easily connect the battery fuse and improve impact resistance and electrical connection reliability. The task is to plan.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides a battery box accommodated in a fuse box that is fixed to the upper surface of the battery box and the entire box is mounted on the upper surface of the battery box. A battery fuse unit electrically connected to a battery terminal fitted to
While the battery terminal includes a pair of fastening pieces projecting from both ends of the arc portion that is externally fitted to the battery post,
A connection piece is provided on the input side bus bar that is fastened to the input terminal of the battery fuse with a bolt, and the connection piece overlaps a side of one of the fastening pieces of the battery terminal. hole and communicates, concluded with a single bolted by a single bolt and one nut, the bolt fixing between the connecting piece and the fastening piece of the battery terminals, bolted battery terminals to the battery posts The battery fuse unit is also used.
[0006]
In the battery fuse unit, the fastening piece on the battery terminal side and the connection piece of the input side bus bar connected to the input terminal of the battery fuse are fastened and integrated by bolting. Connection is unnecessary, and impact resistance can be improved.
Also, when fixing the battery terminal to the battery post, a pair of fastening pieces are bolted and fixed, but since the hole that communicates with the bolt hole of the fastening piece at that time is also provided in the connecting piece, With one bolt tightening operation with one bolt, both the work of fixing the battery terminal to the battery post and the work of fastening the battery terminal and the input side bus bar can be performed. Effective use of parts and the number of work processes Can be reduced.
[0010]
The fuse box includes a middle case that houses the battery fuse and the input-side bus bar, a lower case that is assembled to the lower surface side of the middle case, and an upper case that is assembled to the upper surface side of the lower case,
The arc portion of the battery terminal is externally fitted to the battery post in a state where the arc portion and the fastening piece of the battery terminal and the connection piece of the input side bus bar are exposed to the outer surface from the middle case and the lower case. At the same time, the fastening piece and the connecting piece are bolted to fix the fuse box to the battery box, and the upper case assembled to the lower case is covered at the bolt fastening position.
Thus, by directly attaching the fuse box to the battery, a conventionally required space for installing the fuse box becomes unnecessary, and the limited installation space in the vehicle can be used effectively.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 show a battery fuse unit according to a first embodiment of the present invention. The fuse box 11 accommodates the battery fuse 10 in a case including a lower case 12, an upper case 13, and a middle case 14, and the fuse box 11 is fixed to the upper surface of the battery box 1 mounted on the automobile.
[0012]
Specifically, as shown in FIG. 2, one end of the input-side bus bar 15 and the output-side bus bar 16 is overlaid on the input terminal 10b and the output terminal 10c that protrude horizontally on both sides from the bottom surface of the main body 10a of the battery fuse 10, respectively. The screw portions 15a and 16a protruding from the input side bus bar 15 and the output side bus bar 16 are passed through the through holes 10b-1 and 10c-1 of the input terminal 10b and the output terminal 10c, and are fastened and fixed with nuts N. The battery fuse 10, the input side bus bar 15, and the output side bus bar 16 are accommodated in 14.
In addition, after the input side bus bar and the output side bus bar are previously accommodated in the middle case , the battery fuse input terminal and the input side bus bar, and the output terminal and the output side bus bar may be respectively bolted.
[0013]
As described above, after the battery fuse 10, the input-side bus bar 15, and the output-side bus bar 16 are accommodated and fixed in the middle case 14, the middle case 14 is assembled in the lower case 12, and the upper case 13 is assembled to the lower case 12. .
The upper case 13 has an open / close lid 13a at its half side, and can be opened and closed by interposing a hinge 13c between it and another half side 13b that is locked to the lower case 12.
[0014]
As shown in FIG. 5, the battery terminal 20 has a circular arc portion 21 that is externally fitted to the battery post 2 protruding from a portion provided with a barrel portion 24 that is crimped and connected to the tip of the electric wire w <b> 1 of the power supply circuit. A pair of fastening pieces 22, 23 protrude from both ends of the pair, and bolt holes 22 a, 23 a are provided in the pair of fastening pieces 22, 23.
The other end of the input-side bus bar 15 extends to a position overlapping the side of one fastening piece 23 to form a connection piece 15b, and the connection piece 15b has bolt holes 22a of the fastening pieces 22 and 23, Bolt holes 15b-1 communicating with 23a are provided.
[0015]
Next, a method for fixing the fuse box 11 to the battery box 1 will be described.
First, the arc portion 21 of the battery terminal 20 is externally fitted to the battery post 2 protruding upward from the battery box 1, and the bolt holes 22 a and 23 a of the fastening pieces 22 and 23 and the bolt hole 15 b of the connection piece 15 b of the input side bus bar 15. -1 is overlapped and tightened with a nut N through a bolt B, so that the arc portion 21 is externally fitted and fixed to the battery post 2 to achieve electrical connection between the battery and the battery fuse 10, and at the same time, the fuse box 11 is connected to the battery box. 1 and the upper cover 13 is closed by closing the open / close lid 13 a and is coupled to the lower cover 12.
[0016]
With the above configuration, it is possible to eliminate the need for lead wires that have been required in the past, and to eliminate the need for each terminal connected to the lead wires, thereby reducing the number of parts and the number of operations, thereby reducing costs. You can also.
Further, the arc portion 21 of the battery terminal 20 is externally fitted to the battery post 2, and the battery fuse 10 in the fuse box 11 and the battery post 2 are electrically connected via the battery terminal 20 without the lead wire. Therefore, the electrical connection reliability can be improved.
Further, since the fuse box 11 is directly attached to the battery box 1, overall space saving can be achieved.
[0017]
FIG. 6 shows a first reference embodiment, in which an output terminal 10c ′, an input terminal 10b ′, an input-side bus bar portion 15 ′ and a battery terminal 20 ′ of a battery fuse 10 ′ are formed by punching a single conductive metal plate. is doing.
That is, the input terminal 10b ′ is extended to provide an input side bus bar portion 15 ′, and the input side bus bar portion 15 ′ is continuous with the tip of one of the fastening pieces 23 ′ of the battery terminal 20 ′.
The output-side bus bar 16 ′ is provided separately from the output terminal 10c ′. The output terminal 10c ′ and one end of the output-side bus bar 16 ′ are overlapped, and a screw portion 16a ′ protruding from the output-side bus bar 16 ′ is output. It penetrates through a through hole (not shown) of the terminal 10c ′ and is fastened and fixed with a nut N.
[0018]
Also in the first reference embodiment, the arc portion 21 ′ of the battery terminal 20 ′ is externally fitted to the battery post 2, and the pair of fastening pieces 22 ′ and 23 ′ are fastened by the bolt B and the nut N to be attached to the battery post 2. When fixed, the battery post 2 and the input terminal 10b ′ of the battery fuse 10 ′ can be connected. Further, since the battery terminal, the input side bus bar, the input terminal and the output terminal in the first embodiment are integrated, The number of work steps and the number of parts can be reduced.
Since other configurations are the same as those of the first embodiment, description thereof is omitted.
[0019]
FIG. 7 shows a second reference embodiment, in which the output side bus bar portion 16 ″, the output terminal 10c ″ of the battery fuse 10 ″, the input terminal 10b ″, the input side bus bar portion 15 ″ and the battery terminal 20 ″ are electrically conductive. This is formed by punching a conductive metal plate.
That is, the input terminal 10b ″ is extended to provide an input side bus bar portion 15 ″, the input side bus bar portion 15 ″ is continued to the tip of one of the fastening pieces 23 ″ of the battery terminal 20 ″ and the output terminal 10c. The output side bus bar portion 16 "is continuous and integrally formed.
[0020]
In the second reference embodiment, the output side bus bar portion 16 ″ is also integrally formed with the output terminal 10c ″, the input terminal 10b ″, the input side bus bar portion 15 ″, and the battery terminal 20 ″. In addition, the number of parts can be reduced.
Since other configurations are the same as those of the first embodiment, description thereof is omitted.
[0021]
【The invention's effect】
As is clear from the above description, according to the present invention, the battery fuse and the input side bus bar fastened with the input terminal in advance are accommodated in the battery fuse unit, and the battery terminal is fastened and fixed to the battery post. Sometimes the battery terminal and the input bus bar are fastened simultaneously. Therefore, it is possible to eliminate the lead wires that have been required in the past, and to eliminate the need for each terminal connected to the lead wires, thereby reducing the number of parts and the number of work, thereby reducing costs. .
[0022]
Also, when the battery fuse input terminal and one fastening piece of the battery terminal are formed continuously and the battery terminal is previously set in the battery fuse unit, the separate input side bus bar is omitted. The number of parts and assembly man-hours can be further reduced.
Further, when the output terminal of the battery fuse and the output side bus bar are also integrally formed, the number of parts and the number of assembling steps can be further reduced.
[0023]
Further, since the fuse box can be directly attached to the battery box, it is not necessary to separately arrange the fuse box, and the vehicle can be effectively used in a limited vehicle space.
[Brief description of the drawings]
FIG. 1 is a perspective view of a fuse box containing a battery fuse according to a first embodiment of the present invention.
FIG. 2 is an exploded perspective view of a main part.
FIG. 3 is a perspective view showing a state in which a fuse box is fixed to a battery box.
4 is a plan view of the fuse box shown in FIG. 1. FIG.
FIG. 5 is an enlarged perspective view of the battery terminal shown in FIG. 1;
FIG. 6 is a plan view of a fuse box containing a battery fuse according to the first reference embodiment of the present invention.
FIG. 7 is a plan view of a fuse box containing a battery fuse according to a second reference embodiment of the present invention.
FIG. 8 is a diagram showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Battery box 2 Battery post 10 Battery fuse 10a Main body 10b Input terminal 10c Output terminal 11 Fuse box 12 Lower case 14 Middle case 15 Input side bus bar 15 b Connection piece 16 Output side bus bar 20 Battery terminal 21 Arc part 22, 23 Fastening piece 22a 23a Bolt hole

Claims (2)

A battery fuse that is fixed to the upper surface of the battery box and that houses the battery fuse in a fuse box that is mounted on the upper surface of the battery box, and that electrically connects the battery fuse to a battery terminal that fits into the battery post. A unit,
While the battery terminal includes a pair of fastening pieces projecting from both ends of the arc portion that fits outside the battery post,
A connection piece is provided on an input side bus bar that is fastened to the input terminal of the battery fuse with a bolt, and the connection piece overlaps a side of one of the fastening pieces of the battery terminal. hole and communicates, concluded with a single bolted by a single bolt and one nut, the bolt fixing between the connecting piece and the fastening piece of the battery terminals, bolted battery terminals to the battery posts Battery fuse unit that is also used as a battery. The fuse box includes a middle case that houses the battery fuse and the input side bus bar, a lower case that is assembled to the lower surface side of the middle case, and an upper case that is assembled to the upper surface side of the lower case,
The arc portion of the battery terminal is externally fitted to the battery post in a state where the arc portion and the fastening piece of the battery terminal and the connection piece of the input side bus bar are exposed to the outer surface from the middle case and the lower case. The battery fuse unit according to claim 1, wherein the fastening piece and the connecting piece are bolted to fix the fuse box to the battery box, and an upper case assembled to the lower case is covered at the bolt fastening position. .

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