JP2004215422A - Electric connection box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a structure in which the presence/absence of the meltdown of a fusible link accommodated in an electric connection box can be checked from the outside of a case. <P>SOLUTION: The electric connection box is configured such that: a busbar 20 integrally formed of a plurality of narrow-width fusible links 23 in a parallel state between an input terminal 21 and a plurality of output terminals 22 is accommodated in the case 11; the plurality of fusible links 23 are arranged along the sidewall 11a of the case 11 in the vertical direction; an opening 15 is formed at the sidewall 11a that faces the fusible link 23; the opening 15 is covered with an inspection lid 30; and the meltdown of the fusible link 23 can be checked by opening the lid 30. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electrical junction box, and particularly to an electrical junction box containing a bus bar in which a fusible link portion is integrally formed by providing a narrow width portion in a part of a conductive metal plate, in which the fusible link portion is blown. The presence or absence can be easily confirmed from outside.
[0002]
[Prior art]
As shown in FIG. 7, a single bus bar 1 is stamped into an electric connection box mounted on an automobile, and a plurality of output terminals 1b are connected between an input terminal 1a connected to a battery and a number of output terminals 1b. In some cases, a fuse portion 1c integrally formed as a narrow portion is provided, and the bus bar 1 is housed in an electric connection box.
[0003]
[Patent Document 1]
JP-A-2002-52432
[Problems to be solved by the invention]
In the case of a bus bar integrated type having the above configuration, it is necessary to take out the bus bar 1 from the box of the electric connection box when checking the fusing of the fuse portion 1c. Therefore, it is troublesome, and particularly when the number of poles is large, a high detachment force is required, and there is a problem in that workability is poor. In addition, the output terminal 1b and the mating terminal may be deformed at the time of removal.
[0005]
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide an electric connection box that can easily confirm the fusing of a fuse portion integrated with a bus bar, particularly, a fusible link for a large current from the outside.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a bus bar obtained by stamping a conductive metal plate, an input terminal portion, a plurality of output terminal portions, and a portion between the input terminal portion and the plurality of output terminal portions. A plurality of fusible link parts with narrow width parts are integrally formed in parallel,
The busbar is accommodated in a case, and the plurality of fusible link portions are arranged along a side wall of the case or a cover covering the case in a vertical direction, and the case or the cover facing the fusible link portion is disposed. An electric connection box is provided, wherein an opening is provided in a side wall of the fusible link, the opening is covered with a lid for inspection, and the fusible link portion can be checked for fusing by opening the lid.
[0007]
In this way, when the fusible link portion is disposed vertically in the position along the side wall of the case or the cover, by providing an opening in the side wall of the case or the cover, the inside of the case can be easily inserted from the outside through the opening. Of the fusible link portion can be confirmed. Therefore, it is not necessary to remove the fusible link from the case every time the blowout is confirmed, so that the time and labor for the inspection operation can be reduced, and the quality of the terminal can be improved by preventing the deformation of the terminal caused by the removal operation.
[0008]
The lid is slidably mounted separately from the case or the cover, and the opening is opened and closed by sliding the lid up and down. Since the space required for opening and closing the opening can be minimized by attaching the sliding lid in this manner, the limited space in the vehicle can be effectively used.
[0009]
A lid may be provided integrally with the case or the cover on the periphery of the opening via a thin hinge. In this case, a space for the opening / closing orbit of the lid is required, but the cost can be reduced by integrally forming the lid with the case or the cover.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIGS. 1 to 5 show an electric connection box 10 according to a first embodiment of the present invention. The electric connection box 10 accommodates a bus bar 20 constituting an internal circuit in a case 11, and has an upper cover 12, the lower cover 24 is placed on the lower surface, and the locking claws 13 of the case 11 are locked by being locked to the locked portions 14 of the upper cover 12.
[0011]
As shown in FIG. 3, one conductive metal plate is punched into a bus bar 20 housed in the case 11 to form an input terminal portion 21, a plurality of output terminal portions 22, and an S-shaped narrow portion. A plurality of fusible link portions 23 are formed side by side and integrally formed. The bus bar 20 is bent as shown in FIG. 1 and inserted and locked in the case 11 of the electric connection box 10 in the vertical direction.
[0012]
As shown in FIG. 4, the bus bar 20 has a fusible link 23 disposed along one side wall 11 a of the case 11. The input terminal section 21 is connected to a terminal (not shown) of a wire terminal connected to the power supply side, and the plurality of output terminal sections 22 are a fuse, a relay mounted on the electric connection box 10, and a connector connected to a wire harness terminal. Is connected to the terminal.
[0013]
As shown in FIG. 4, an opening 15 is provided in one side wall 11 a of the case 11 at a position facing the fusible link portion 23, and the opening 15 is opened and closed by a separate lid 30. As shown in FIGS. 5A and 5B, slide grooves 16a, 16b, and 16c are formed in the upper side and the left and right sides of the opening 15, respectively. In addition, a pair of locking claws 17 protrude from the outer surface of the upper side wall of the opening 15.
[0014]
On the other hand, on the upper side and the left and right sides of the lid 30, there are provided flange-shaped guide projections 30a, 30b, 30c which are slidably fitted in the slide grooves 16a, 16b, 16c. A pair of locked frames 32 are formed at positions corresponding to 17. As a result, the lid 30 slides the guide projections 30b, 30c on both sides downward into the slide grooves 16b, 16c to open the opening 15, and slides upward from this state to move the guide projection 30a on the upper side to the upper side. The opening 15 is closed in a state fitted in the slide groove 16a, and when closed, the locked frame 32 of the lid 30 is locked by locking with the locking claw 17 projecting from the side wall 11a.
[0015]
In the electric junction box 10 having the above configuration, the opening 15 is usually closed with the lid 30, and the lid 30 is slid downward to check whether or not the fusible link portion 23 housed therein is blown. By doing so, the presence or absence of fusing of the fusible link portion 23 can be easily confirmed from the outside through the opening 15. Therefore, it is not necessary to remove the bus bar 20 from the case 11 to check whether or not the bus bar 20 has been blown. This improves workability, and also prevents the output terminal portion from being deformed when the bus bar 20 is taken out. Further, since the lid 30 opens and closes in a sliding manner, the space required for opening and closing the lid 30 can be minimized, and the space can be effectively used in a limited space inside the vehicle.
[0016]
FIGS. 6A, 6B, and 6C show an electric junction box 10 according to a second embodiment of the present invention.
As in the first embodiment, a bus bar 20 is fitted and accommodated in a position along the case 11 of the electric connection box 10 and the side wall of the lower cover 24 in the vertical direction. The fusible link portion 23 juxtaposed to the bus bar 20 is arranged along the side wall of the lower cover 24.
[0017]
An opening 15 ′ is provided on a side wall of the lower cover 24 at a position facing the fusible link portion 23, and a lid 40 is provided integrally with the lower cover 24 on a lower peripheral edge of the opening 15 ′ via a thin hinge 41. . As shown in FIG. 6B, a pair of cutouts 15a 'are provided on the upper side of the periphery of the opening 15', and the outer corners of the cutout 15a 'are formed as shown in FIG. 6C. A flexible piece 42 having a locking claw 42a corresponding to the notch 15a 'is provided upright on the upper end side of the lid 40, and when the lid 40 is closed, As shown in FIG. 6C, the locking claw 42a of the lid 40 is locked by locking the notch 15a 'of the lower cover 24.
[0018]
Also in the present embodiment, the presence or absence of fusing of the fusible link portion 23 in the electric connection box 10 can be easily confirmed from the outside through the opening 15 ′ of the lower cover 24. Further, since the lid 40 that opens and closes via the hinge 41 is formed integrally with the lower cover 24, the cost can be reduced.
[0019]
【The invention's effect】
As is apparent from the above description, according to the present invention, the position for accommodating the fusible link portion provided integrally with the bus bar is a position along the side wall of the case or cover of the electric connection box, and An opening is provided in the side wall at a position opposed to the opening, and the opening can be opened and closed by the lid. Therefore, the presence or absence of fusing of the internal fusible link portion can be easily checked from the outside through the opening by opening the lid. Therefore, it is not necessary to remove the bus bar from the case to confirm the fusing of the fusible link portion as in the conventional case, thereby improving workability and preventing terminal deformation due to the removal operation, thereby improving quality. Can be.
[0020]
Further, by making the lid a sliding type, the space required for opening and closing the lid can be minimized. On the other hand, if the lid is formed integrally with the case or the cover and opened and closed via a hinge, the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an electric junction box according to a first embodiment of the present invention.
FIG. 2 is a perspective view showing an open / closed state of a lid of the electric connection box shown in FIG. 1, (A) is a perspective view showing a closed state, and (B) is a perspective view showing an open state.
FIG. 3 is a front view of a bus bar integrally formed with a fusible link portion.
FIG. 4 is a schematic side view showing a state in which a bus bar is housed along a side wall of a case in an electric connection box.
5A and 5B show an opening and closing structure of a lid of the electric connection box shown in FIG. 1, wherein FIG. 5A is a perspective view of a main part and FIG. 5B is a sectional view of a main part showing the opening and closing structure.
6A and 6B show an electrical junction box according to a second embodiment of the present invention, wherein FIG. 6A is a perspective view showing a closed state, FIG. 6B is a perspective view of a main part showing an open state, and FIG. It is principal part sectional drawing of a state.
FIG. 7 is a drawing showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Electric connection box 11 Case 12 Upper cover 15, 15 'Opening 16a, 16b, 16c Sliding groove 20 Bus bar 23 Fusible link part 30, 40 Lid 41 Thin hinge

Claims (3)

An input terminal portion, a plurality of output terminal portions, and a plurality of fusible link portions having a narrow width portion between the input terminal portion and the plurality of output terminal portions, on a bus bar formed by punching a conductive metal plate. It is formed integrally in a parallel state,
The busbar is accommodated in a case, and the plurality of fusible link portions are arranged along a side wall of the case or a cover covering the case in a vertical direction, and the case or the cover facing the fusible link portion is disposed. An electrical connection box, wherein an opening is provided in a side wall of the electrical connection box, the opening is covered with a lid for inspection, and the lid can be opened to check fusing of the fusible link portion. 2. The electric junction box according to claim 1, wherein the lid is slidably mounted separately from the case or the cover, and the lid is slid up and down to open and close the opening. The electric connection box according to claim 1, wherein a lid is provided integrally with the case or the cover via a thin hinge at a periphery of the opening.

Images