JP3013699B2 - Fuse box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuse box and, more particularly, to a bus bar housing for housing a bus bar.
In a fuse box protruding from the electric wire connection terminal accommodating portion, deformation of a warp or the like on the outer protective wall of the bus bar accommodating portion is prevented.

[0002]

2. Description of the Related Art Conventionally, in a vehicle wire harness,
In order to protect the electric circuit, fuses are provided between the power supply side and a number of electrical components. These fuses are made of resin as shown in FIGS. 4A and 4B in order to improve the maintainability. And the bus bars 2 formed by punching a conductive metal plate are placed in the fuse box 1 and the distribution is performed by using power distribution.

[0003] That is, the fuse box 1 is provided with an electric wire connection terminal insertion portion 4 (hereinafter abbreviated as a terminal insertion portion 4) inside the bus bar accommodation portion 3, and the bus bar accommodation portion 3 has a bus bar 2 as shown in FIG. Is inserted vertically. The bus bar 2 has tabs 2b protruding at intervals along one end surface of a bus bar main body 2a formed of a long flat conductive path, and a relay terminal 5 is attached to each tab 2b. The bus bar 2 accommodates the bus bar main body 2 a in the bus bar main body accommodating section 3 a of the bus bar accommodating section 3 and the tab 2.
b and the relay terminal 5 are housed in the tab / relay terminal housing part 3b. On the other hand, the terminal insertion portion 4 is formed along the inner protective wall 1a of the tab / relay terminal accommodating portion 3b, and each terminal insertion portion 4 has an electric wire crimped to the tip of an electric wire 6 connected to an electrical component. The crimp terminal 7 is inserted. As described above, the terminals 8a and 8b on both sides of the fuse 8 are inserted and connected to the relay terminal 5 and the wire crimp terminal 7 arranged adjacent to each other, and the fuse 8 is attached.

[0004]

Since the bus bar 2 is formed by punching a metal plate, the bus bar main body 2a is vertically arranged and connected to the fuse 8 unless the relay terminal 5 is used as described above. I can't do it. In addition, since the bus bar 2 also serves as a power source distribution, it is necessary to set the bus bar 2 large in accordance with the current value, so that the height H1 (shown in FIG. 3) of the bus bar main body 2a increases. Therefore, in order to make the relay terminal 5 on the side to which the fuse 8 is attached at the same height as the wire connection terminal 7, the busbar main body housing portion 3 a for housing the busbar main body 2 a protrudes from the terminal insertion portion 4 by the dimension L. .

In recent years, as the overall size of the fuse box 1 has been demanded to be reduced, the height of the terminal insertion portion 4 is not increased more than necessary.
Is prominent. In addition, in order to reduce the weight of the fuse box 1, the thickness of the box wall has been reduced, and the outer protective wall 1b of the busbar body housing 3a has been reduced in thickness.

As described above, when the projecting dimension L of the busbar main body housing portion 3a is increased and the outer protection wall 1b is made thinner, the busbar housing portion 3 is moved between the outer protection wall 1b and the inner protection wall 1a. Since a continuous space for accommodating the bus bar body 2a is required between the two ends, there is no connecting portion in the middle in the length direction and the connection is made only at both ends in the length direction. There is a problem that the long outer protective wall 1b is likely to be warped or deformed.

[0007] The busbar receiving portion 3 is provided with rattle pressing projections 1c and 1d projecting from the outer protective wall 1b and the inner protective wall 1a so as to prevent the stored busbar 2 from rattling. Both the inner and outer surfaces of the bus bar main body 2a are sandwiched. Therefore, as described above, when the outer wall portion 1a is warped, the play holding portion 1 reducing the gap is used.
In the worst case, there was a gap between c and 1d, and there was a drawback that the bus bar 2 could not be inserted.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and can prevent a deformation such as a warp from occurring on an outer protective wall forming a bus bar accommodating portion, thereby preventing a problem occurring when a bus bar is inserted. Intended to provide boxes.

[0009]

In order to achieve the above object, according to the present invention, a busbar body accommodating portion according to claim 1 is provided.
A bus bar receiving portion including a tab protruding at a required interval along one edge of the bus bar main body and a tab / relay terminal receiving portion for receiving a relay terminal connected to the tab;
A fuse box provided with a wire connection terminal insertion portion adjacent to an inner protective wall of the relay terminal housing portion, and a fuse connected to each of the relay terminals and the terminal inserted into each of the wire connection terminal insertion portions; The busbar main body housing portion projects from the wire connection terminal insertion portion, an outer wall having at least the same height is provided along the outer protection wall of the busbar housing portion, and the outer wall and the outer protection wall of the busbar housing portion are provided. Are connected at a required interval by a rib, and the inner protective wall and the outer protective wall of the busbar receiving portion are opposed to each other with a continuous space for busbar body insertion, and each tab / relay terminal insertion portion A fuse box is provided with a backlash that protrudes between the inner and outer surfaces of the busbar body, and the ribs are provided on the same line as the protrusions of the backlash. It is intended to.

[0010]

[0011]

In the fuse box according to the first aspect of the present invention, the outer wall of the box is provided along the outer protective wall of the bus bar housing portion and connected to the outer protective wall via the rib.
Deformation such as warpage can be prevented on the outer protective wall, and a required gap is maintained between the outer protective wall and the inner protective wall,
The work of inserting the busbar into the busbar housing can be easily performed.

In addition, by forming the ribs on the same line as the backlash holding portion for sandwiching the inner and outer surfaces of the bus bar main body, in particular, the outer protection wall having the backlash holding portion is prevented from being warped or deformed, and the backlash holding portion is prevented. To secure a small gap between
This prevents the backlash from interfering with the busbar when it is inserted, preventing it from being inserted.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS. In the resin fuse box 10 of the present invention, as shown in FIGS. 1A and 1B, a bus bar accommodating portion 11 is formed along the outer periphery of the box 10, and a terminal insertion portion 12 is formed inside thereof. An outer wall 14 of the fuse box 10 is provided at a required interval outside the outer protective wall 13 of the bus bar accommodating portion 11, and the outer wall 14 and the outer protective wall 13 are connected by a rib 15 at a required interval. are doing.

The structure and connection of the bus bar 2 housed in the fuse box 10, the relay terminal 5 connected to the bus bar 2, the wire connection terminal 7 connected to the wire 6, and the fuse 8 are the same as those of the conventional example shown in FIG. Tabs 2b are provided at predetermined intervals along the upper edge of the bus bar main body 2a, a relay terminal 5 is connected to the tab 2b, and a pair of terminals 8a of a fuse 8 are connected to the relay terminal 5 and the wire connection terminal 7. , 8b.

The bus bar housing 11 and the terminal insertion portion 12 of the fuse box 10 are open at both ends. The bus bar 2 and the electric wire connection terminal 7 are inserted through one end openings 11c and 12a, and the other end openings 11d, 11d. 12b
More specifically, a pair of terminals 8a and 8b of the fuse 8 shown in FIG. 3 are inserted to branch-connect the power supply and the electrical component.
The relay terminal 5 is previously inserted into the other end opening 11d of the bus bar insertion portion 11, and the fuse terminal 8a is connected to the relay terminal 5.

The busbar accommodating portion 11 includes a busbar main body accommodating portion 11a for accommodating the flat busbar main body 2a,
A tab 2b projecting from the bus bar body 2a at a required interval and bent and a tab / relay terminal accommodating portion 11b for accommodating the relay terminal 5 connected to the tab 2b are provided continuously in the vertical direction. The terminal insertion portion 12 is formed on the inner protective wall 16 of the bus bar housing portion 11 along the tab / relay terminal housing portion 11b, and the ends of the relay terminal 5 and the wire connection terminal 7 attached to the tab 2b are substantially formed. It is set to be located at the same height. Therefore, the busbar main body housing 1
1a protrudes from the terminal insertion portion 12.

FIGS. 1A and 1B and FIG. 4A
In (B), the tab / relay terminal accommodating portion 11b and the terminal insertion portion 12
Is shown at the bottom and the fuse 8 is mounted from below, but it is actually used upside down,
The fuse 8 is mounted from above.

The inner protective wall 16 of the busbar housing 11
And the outer protective wall 13 are connected to the continuous space 2 for inserting the busbar body.
The bus bar body 2a is set so as to be positioned between the adjacent tabs 2b, and the backlash pressing portions 17, 18 sandwiching the inner and outer surfaces of the bus bar main body 2a project into the continuous space 20 so as to face each other. Has been established.

The outer protective wall 13 of the busbar housing 11
The outer wall 14 formed along the outer periphery of the outer protective wall 13 is provided at least in parallel with the outer protective wall 13 with a certain gap, and at the same height. The outer wall 14 has both ends 14 a in the length direction connected to the both ends 13 a in the length direction of the outer protection wall 13 by a connecting portion 19.

The rib 15 connecting the outer side wall 14 and the outer protective wall 13 is provided on the same line as the projecting position of the backlash pressing portions 17, 18. By connecting the outer wall 14 and the outer protective wall 13 with the ribs 15, a space 25 having a small closed cross section surrounded by the ribs 15 on both sides, the outer wall 14, and the outer protective wall 13 is continuously formed. The outer protective wall 13 of the housing 11 is not warped or deformed.

According to the fuse box 10 having the above-described structure, the thin, long, and protruding outer protection wall 13 of the busbar housing portion 11 is connected to the outer wall 14 via the rib 15 at a required interval. Since the outer protective wall 13 is reinforced, warpage and deformation can be prevented. Further, since the outer wall 14 is also connected to the outer protective wall 13 via the rib 15, the warp of the outer wall 14 is suppressed by the rib 15. That is, the outer wall 14 and the outer protective wall 13 are restrained by the ribs 15 from being deformed and warped in opposite directions away from each other.

As described above, since the outer protective wall 13 of the bus bar housing 11 can be prevented from being deformed, the outer protective wall 13 and the inner protective wall 16 are held substantially parallel to each other so that the continuous space 2 having a required width is formed.
Holds 0. Also, in the portion where the play holding portions 17 and 18 are opposed to each other to form a small gap 21, the rib 15 is arranged on the same line as the play holding portions 17 and 18,
Since deformation and warpage are prevented from occurring at the portion, a gap corresponding to the thickness of the bus bar 2 can be ensured in the gap 21, and the situation where the bus bar 2 cannot be inserted does not occur.

The present invention is not limited to the above-described configuration. For example, the outer wall 14 may be formed higher than the outer protective wall 13 of the bus bar housing 11 so as to protrude from the tip of the bus bar main body housing 11.

[0024]

As is apparent from the above description, the fuse box according to the first aspect of the present invention is provided with an outer wall along the outer protective wall of the bus bar housing, and the outer wall and the outer protective wall are formed by ribs. Since the connection is made continuous, it is possible to prevent the outer protection wall from warping. Therefore, when the bus bar is inserted, it is possible to prevent the play holding portion projecting from the outer protection wall of the bus bar accommodating portion from interfering with the bus bar and hindering the insertion of the bus bar, thereby facilitating the bus bar insertion operation. Can be done.

Further, since the rib is provided so as to correspond to the play holding portion, the inward warpage or deformation of the outer protective wall at the portion can be prevented by pulling the outer wall outward through the rib. In particular, a required gap can be ensured in a portion where the gap is reduced by the play holding portion.

Further, by providing the outer wall on the outer periphery of the box, the strength of the entire box can be improved, and at the same time, the outer wall connected by the ribs and the outer protective wall of the busbar housing portion interfere with each other. This has the advantage that deformation and warpage can be prevented.

[Brief description of the drawings]

1A and 1B show a fuse box of the present invention, wherein FIG. 1A is a perspective view of a main part, and FIG. 1B is a sectional view taken along line II of FIG.

FIG. 2 is a partial bottom view of the fuse box of the present invention.

FIG. 3 is a perspective view of a bus bar, a relay terminal, a wire connection terminal, and a fuse housed in a fuse box.

4A and 4B show a conventional fuse box, wherein FIG. 4A is a perspective view of a main part, and FIG. 4B is a sectional view taken along line II-II of FIG.

FIG. 5 is a schematic view showing a problem of a conventional example.

[Explanation of symbols]

 2 Busbar 2a Busbar body 2b Tab 5 Relay terminal 6 Electric wire 7 Wire connection terminal 8 Fuse 8a, 8b Terminal 10 Fuse box 11 Busbar housing 11a Busbar body housing 11b Tab / relay terminal housing 12 Wire connection terminal insertion 13 Outer protection Wall 14 outer wall 15 rib 16 inner protective wall

──────────────────────────────────────────────────の Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H01H 85/00-87/00 H01H 37/76 H01H 69/02 H02G 3/08-3/20 H02G 5 / 00-5/10

Claims (1)

(57) [Claims] 1. A busbar housing portion comprising a busbar body housing portion, a tab protruding at a predetermined interval along one edge of the busbar body, and a tab / relay terminal housing portion housing a relay terminal connected to the tab. And a fuse box comprising a wire connection terminal insertion portion adjacent to the inner protective wall of the tab / relay terminal housing portion, and a fuse connected to each of the relay terminals and the terminal inserted into each of the wire connection terminal insertion portions. The busbar housing portion has a busbar body housing portion projecting from the wire connection terminal insertion portion, and an outer wall having at least the same height is provided along the outer protection wall of the busbar housing portion,
The outer wall and the outer protection wall of the bus bar housing are connected by a rib at a required interval, and the inner protection wall and the outer protection wall of the bus bar housing are separated from each other by a continuous space for inserting the bus bar body. At the same time, between each tab and the relay terminal insertion portion, a backlash holding portion for holding the inner and outer surfaces of the bus bar main body is protruded, and the rib is provided on the same line as the protruding position of the backlash pressing portion. Fuse box.