JP3357589B2 - Electrical junction box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical junction box in which electrical components such as a fusible link and a relay are mounted.

[0002]

2. Description of the Related Art FIG. 4 shows an electric junction box 1 described in Japanese Utility Model Laid-Open Publication No. 63-127055. This electrical junction box 1
A bus bar forming a branch circuit is built in the main body 2. Further, the main body 2 is formed with a plurality of relay mounting portions 3 on which relays as electrical components are mounted, and a plurality of fuse mounting portions 4 on which fuses are mounted. Further, a screw-type fusible link 5 is provided at a corner of the main body 2.
However, there is provided a screw portion 8 which is screwed and fixed together with the terminal portion of the bus bar and the terminal 7 of the terminal of the electric wire 6.

[0003]

However, in the electric junction box 1, when the screw-type fusible link 5 is attached to the screwing portion 8, the screw 9 is set or the tool 10 is inserted. However, after the fusible link 5 is attached, the work space 11 becomes a surplus space that is not used. For this reason, there is a problem that the electric connection box 1 becomes unnecessarily large.

Therefore, in the electric connection box 12 described in Japanese Patent Application Laid-Open No. 9-171767, as shown in FIG. 5, a surplus space 14 that is not used after the fusible link is attached to the screwing portion 13 is provided. Connector 1
It has been proposed to form a connector mounting portion 16 to which the connector 5 can be mounted and to effectively use the surplus space 14. In the electric connection box 12, the connector mounting portion 16 provided in another portion up to now is provided in a portion that becomes an extra space 14 after the fusible link is attached, so that the size of the electric connection box 12 is reduced accordingly. It becomes possible.

However, in this electric junction box 12,
Since the screwing portion 13 is provided at the corner of the electric connection box 12, the screw is screwed into the screwing portion 13 from diagonally above, so that there is a problem that the screw hole is difficult to see and the workability is poor.

Further, a work space for tightening screws is required around the corners of the electric connection box 12.
In the case of layout 2, if a sufficient work space for screw tightening cannot be ensured around the corner, there is a problem that the screw tightening work is troublesome.

Accordingly, an object of the present invention is to provide an electric junction box which can secure a space for screwing a fusible link and can be downsized.

[0008]

In order to achieve the above object, according to the first aspect of the present invention, there is provided an electric device in which a bus bar forming a branch circuit is built, and an electric component connected to the branch circuit is mounted. A component mounting portion, an electrical component mounting surface provided with the electrical component mounting portion, and a fuse mounting portion in which a screw-type fusible link is screwed and fixed together with the bus bar and a terminal of an electric wire terminal. A screw portion having a housing portion in which the screw-type fusible link is housed, and a screw opening for screw work for screwing the terminal portion of the fusible link housed in the housing portion together with the bus bar. An electrical junction box formed of at least one of the fuse mounting portions, the at least one fuse mounting portion protruding from the electrical component mounting surface, and the screwing opening being positioned higher than the electrical component mounting portion. Formed by the space of the upper side of the electrical component mounting portion to a space for screwing work
By securing the space for the screwing work,
The fuse mounting surface of the fuse mounting part and the electrical component mounting surface
The fuse mounting part is attached to the main body so that
On the other hand, it is characterized in that it is integrally formed at a position shifted in the height direction .

In this electrical junction box, the fusible link is stored in the storage portion before the electrical component is mounted on the electrical component mounting portion, and the fusible link terminal portion, the bus bar, and the terminal of the wire terminal are screwed together with the terminal. And fix it with screws. At this time, the screw opening is formed to a position higher than the electrical component mounting portion, and the fuse mounting portion is stepped with respect to the main body.
By integrally formed on the displacement position Cormorants, space for screwing work is secured on the upper side of the electrical component mounting portion, further
The screwing part is easy to see from the screwing opening
Thus, the screwing operation can be easily performed from the electric wire component mounting portion side.

Therefore, there is no need to secure a work space for screwing work around the screwed portion, and there is no extra space for screwing work after the fusible link is attached. The size can be reduced without increasing the size.

A second aspect of the present invention is the invention according to the first aspect, wherein the fuse attached to the fuse attaching portion is provided.
Bull link and a book of electrical components attached to the electrical component mounting part
The height from the body is substantially the same .

[0012] In this electric junction box, the fuse is to be installed in the fuse mounting portion.
Attached to the fusible link and electrical component mounting part
Height of the electrical components from the main unit should be approximately the same
As a result, there is no protrusion from the electrical junction box,
There is less wasted space around the electrical junction box on the
Therefore, the area around the electric connection box can be effectively used.

[0013]

[0014]

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of an electric junction box according to the present invention will be described. FIG. 1 is a perspective view showing the electric connection box 17, and FIG. 2 is a sectional view taken along the line II-II in FIG. As shown in FIG. 1, the electric connection box 17 includes a bus bar (see FIG. 2) 23 forming a branch circuit.
, An electrical component mounting portion 20 to which an electrical component (see FIG. 2) 19 connected to the branch circuit is mounted, and an electrical component mounting surface 21 on which the electrical component mounting portion 20 is projected. ,
The screw-type fusible link 22 includes the bus bar 23 and the electric wire 2.
4 and a fuse mounting portion 26 which is screwed and fixed together with the terminal 25 of the terminal.

Further, the fuse mounting portion 26 is integrally formed at a position shifted in the height direction with respect to the main body 18 so that the fuse mounting surface 27 and the electrical component mounting surface 21 are stepped. The fuse mounting portion 26 includes four housing portions 2 in which the four screw-type fusible links 22 are housed, respectively.
8, 28, 28, 28 are formed. Each storage unit 28
A screwing portion 29 is formed on the lower side of the. The screwing portion 29 has a screwing wall 29a in the middle.
Is provided. On both sides of this screwing wall 29a,
The nuts 30 are press-fitted and fixed respectively. A pair of slits 3 are formed on the screwing wall 29a on the storage section 28 side.
1 and 31 are formed, and a pair of terminal portions 32 of the screw-type fusible link 22 stored in the storage portion 28 are respectively inserted and inserted on the nuts 30 and 30 of the screwing wall 29a.

On the front side of the nuts 30, 30 are formed rectangular screw openings 33a, 33b, respectively. These screw openings 33a, 33b are
8 is used for screwing the terminal portion 32 of the screw-type fusible link 22 housed in 8 together with the bus bar 23. The one screwing opening 33 a is located on the mounting surface 21 side, and is formed to a position higher than the electrical component mounting portion 20 from the mounting surface 21. From the screw openings 33a and 33b, nuts 30, 30
Are inserted into the screwing portions 29, 29. In this case, when tightening the screw 34 inserted through the one screwing opening 33a,
The upper space 35 is a space for fastening the screw 34.

As shown in FIG. 2, the height from the electrical component mounting surface 21 to the fusible link 22 when the screw type fusible link 22 is mounted on the fuse mounting portion 26 is determined by the electrical component mounting portion. The height is substantially equal to the height from the mounting surface 21 when the electrical component 19 is mounted on 20. Therefore, when the fusible link 22 and the electrical component 19 are mounted on the electrical junction box 17, there is no portion locally protruding from the electrical junction box 17.

Next, a method of attaching the fusible link 22 to the electric junction box 17 will be described.

In the state shown in FIG.
The terminal portion 23a of the bus bar 23 is located on the front side of the nut 30 of FIG. When the fusible link 22 is stored in the storage section 28 in this state, the terminal portions 32, 32 of the fusible link 22 are inserted between the terminal portions 23a, 23a of the bus bar 23 and the nuts 30, 30. From this state,
The screw 34 is screwed into the nut 30 by inserting one of the screw holes 33a, and a tool such as an impact wrench (not shown) is used.
Screw 34 is tightened. At this time, the screw 34 and a tool for tightening the screw 34 are inserted from the space 35 above the electrical component mounting portion 20, and the bolt is tightened in this space 35.

Next, the screw 34 is inserted through the screwing opening 33b on the opposite side, and screwed and fastened to the nut 30. As described above, the fusible link 22 is connected to the fuse attaching portion 26.
Can be attached to After the attachment of the fusible link 22 to the fuse attachment portion 26 is completed, the electrical component 19 is attached to the electrical component attachment portion 20. When the electrical component 19 is mounted on the electrical component mounting portion 20, the height of the fusible link 22 from the mounting surface 21 is equal to the mounting surface 2 of the electrical component 19.
It is almost equal to the height from 1.

According to the present embodiment, the one screwing opening 33a faces the mounting surface 21 and is formed up to a position higher than the electrical component mounting portion 20, so that the space above the electrical component mounting portion 20 is provided. The screwing operation can be performed from the 35 side.

Therefore, since the upper part of the electrical component mounting portion 20 can be used as a work space for screwing work, a sufficient work space can be secured, and the work space can be secured after the fusible link 22 is mounted. The electrical component 19 is mounted on the electrical component mounting portion 20 and is effectively used. In addition, since there is no extra space for screwing work after the attachment of the fusible link 22, the size of the electric junction box can be reduced.

When the fusible link 22 is mounted on the fuse mounting portion 26, the height of the electrical component 19 mounted on the electrical component mounting portion 20 and the height from the electrical component mounting surface 21 are substantially equal. There is no protruding part from the electric junction box 17, and there is no useless space around the electric connection box 17 in terms of layout on the vehicle.

Furthermore, the step of forming the fuse mounting portion 26 from the electrical component mounting portion 21 in a step-like manner makes it easier to see the nut 30 of the screwing portion 29 and facilitates the screwing operation.

In this embodiment, the fuse mounting portion 2
6 shows an example in which one screwing opening 33a is provided on the electrical component mounting surface 21 side, but the other screwing opening 33b can also be provided so as to face the electrical component mounting surface 21. In this case, the fuse mounting portion 26 is connected to the electrical component mounting portions 20 and 2.
Place between 0.

Next, another embodiment shown in FIG. 3 will be described.

In the electric junction box 36 of the present embodiment, the relay mounting portions 37, 38,
0. These relay mounting parts 3
The present invention is used for the arrangement of the relay mounting portion 37 and the fuse mounting portion 40 among 7, 38, and 39.

As shown in FIG. 3, also in the electric connection box 36 of the present embodiment, the fuse mounting portion 40 is protruded from the relay mounting surface (electrical component mounting surface) 41, and the screw opening 42 is formed in the relay mounting portion ( It is formed to a position higher than the electrical component mounting portion 37, and a space 43 for screwing work is secured above the relay mounting portion 37.

According to this embodiment, the same effect as that of the above-described embodiment can be obtained, and a space 43 for screwing the fusible link can be secured above the relay mounting portion 37, and the wasteful link can be used. Since there is no space, the electric junction box can be downsized.

[0031]

As described above, according to the first aspect of the present invention, the screw opening is formed to a position higher than the electrical component mounting portion , and the fuse mounting portion is stepped with respect to the main body.
The screwing operation can be performed in the space above the electric wire component mounting portion by integrally forming the components at the shifted positions .
Therefore, a sufficient working space for screwing work can be secured around the screwing mounting portion, and the working space does not need to be provided in a portion other than the electric connection box. Also, the screwed part is easy to see from the screwed opening.
This improves screw workability.

Further, since there is no extra space for screwing work after mounting the fusible link, the size of the electric junction box can be reduced.

According to the second aspect of the present invention, since the fuse mounting portion is integrally formed at a position displaced in a stepwise manner with respect to the main body, the screwed portion becomes easy to see from the screwed opening, and the screwing operation is performed. The performance is improved.

[0034]

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of an electric junction box according to the present invention.

FIG. 2 is a cross-sectional view showing the inside of the electric junction box, taken along the line II-II in FIG.

FIG. 3 is a perspective view showing an electric junction box according to another embodiment.

FIG. 4 is a perspective view showing a conventional electric junction box.

FIG. 5 is a perspective view showing another conventional electric connection box.

[Explanation of symbols]

 17 Electrical connection box 18 Main body 20 Electrical component mounting portion 21 Electrical component mounting surface 22 Screw-type fusible link 23 Bus bar 25 Terminal 26 Fuse mounting portion 28 Storage portion 29 Screw portion 32 A pair of terminal portions 33a, 33b Screw opening

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H02G 3/16 H01H 85/56 H01R 4/38

Claims (2)

(57) [Claims] 1. A main body in which a bus bar forming a branch circuit is built, an electrical component mounting portion on which an electrical component connected to the branch circuit is mounted, and an electrical component mounting surface provided with the electrical component mounting portion. And a fuse mounting portion in which the screw-type fusible link is screw-fixed together with the bus bar and the terminal of the electric wire terminal, wherein the fuse mounting portion stores the screw-type fusible link; An electrical connection box formed of a screw portion having a screw opening for screwing work for screwing a terminal portion of the fusible link stored in a storage portion together with the bus bar, wherein at least one of the fuses is provided. A mounting portion is protruded from the electrical component mounting surface, and the screw opening is formed to a position higher than the electrical component mounting portion .
By making the pace a space for screwing work,
Secure the space for the screwing operation and secure the fuse
The fuse mounting surface of the mounting part and the electrical component mounting surface are stepped.
The fuse mounting portion with respect to the main body so that
An electric junction box, which is integrally formed at a position shifted in the vertical direction . 2. The invention according to claim 1, wherein
The fusible link attached to the
The height of the electrical component mounted on the electrical component mounting part is approximately
An electrical junction box, which is identical .