JPH10201047A - Block structure of electrical junction box - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To increase versatility by increasing the number of cassette blocks mounted on a block body in accordance with vehicle specifications, and to reduce the holding strength of cassette blocks due to the increase in cassette blocks. To prevent. SOLUTION: The block structure of the electric junction box of the present invention is as follows.
A cassette fitting portion 8 is provided on the side wall 7 of the block main body 2 and a cassette block 4 having a fitting portion lock 19 that can be fitted to the cassette fitting portion, and at least the fitting portion lock 19 is connected to one outer peripheral wall 18. And a cassette fitting portion 8 on the inner wall portion.
And an extension block frame 3 provided with
A plurality of cassette blocks 4 and an additional block frame 3 are connected to each other, and a cassette fitting portion 8 is provided on an outer peripheral wall 17 other than an outer peripheral wall 18 provided with a fitting portion lock 19 of the additional block frame 3. .

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an electric junction box capable of increasing or decreasing the number of fuses in response to an increase or decrease in the number of loads on an electric system of an automobile or the like.

[0002]

2. Description of the Related Art A conventional electrical junction box capable of increasing or decreasing the number of fuses in response to an increase or decrease in the number of loads in an electric system of an automobile or the like will be described with reference to FIGS.

The conventional electric junction box shown in FIG. 4 is disclosed in Japanese Utility Model Laid-Open No. 55-77356, and has a multi-pole fuse block 31 and a single-pole fuse block 33.
An easily replaceable fuse 32 is inserted into each of the upper surfaces, and a conducting wire 34 is connected to each lower surface, and a mounting portion 35 for mounting to a vehicle body or the like is provided.

A guide rail 36 projecting vertically is provided on one wall surface of the fuse blocks 31 and 33 in the connecting direction.
And a snap strip 37 protruding therebetween. The guide rail 36 is guided by a guide wall 38 provided on the other wall surface and is positioned right and left.

[0005] The snap strip 37 has a notch 39 at the upper part, and a shoulder 40 at the middle part with a step.
A thin tip portion 41 is provided at the lower part. The tip 4
1 has a locking portion 42 projecting at right angles to the wall surface direction and an inclined surface 43 on the wall surface side.

The other wall is provided with a guide wall 38, a projecting arm 44 serving as a lock receiving portion, and a vertical groove 45. The overhang arm 44 is vertically penetrated,
A hole 46 having the same width as the groove 45 is provided.

[0007] In the electric junction box configured as described above, the walls that can be connected to each other face each other,
When the wall surface provided with the snap strip 37 is lowered, the inclined surface 43 is lowered while warping to the groove 45 side while contacting the peripheral edge of the hole 46 of the overhang arm 44, and the shoulder portion 40 contacts the upper surface of the overhang arm 44. When it is lowered, it returns to its original state by elastic action. Since the locking portion 42 of the distal end portion 41 of the snap strip 37 is engaged with the lower surface of the overhang arm 44, the two fuse blocks 31 and 33 are integrally connected to prevent the vertical movement.

A relay box shown in FIG. 5 as another conventional example is disclosed in Japanese Utility Model Laid-Open Publication No. 3-7602, in which one relay box 51 is connected to one outer wall 52.
Are formed integrally with each other, and a pair of guide grooves 54 are formed in the convex thick portion.
Further, the other relay box 61 is provided with one outer wall surface 62.
The fitting plate 63 for the guide grooves 54 is integrally formed.

The fitting plate 63 includes a pair of guide ribs 6.
4 and 64 are protruded, and are formed integrally with the bottom piece 65 of the guide rib via a linking piece 66.
A slit 67 is formed between 4 and 64. A slit 68 is formed in the center of the fitting plate 63, and a pair of flexible pieces 69, 69 are formed on the left and right.

Stop pieces 70, 70 are integrally formed inside the upper edges of the flexible pieces 69, 69. The flexible pieces 69, 69 have flexibility in the longitudinal direction of the relay box 61 by the central slit 68, and at the same time, are perpendicular to the outer wall surface 62 of the relay box 61 by the slits 67, 67 between the guide ribs 64, 64. It is flexible in the direction.

In the relay box configured as described above, the fitting plate 63 provided on the outer wall surface 62 of one relay box 61 is replaced with a pair of guide grooves 54 provided on the outer wall surface 52 of the other relay box 51. , 54, the relay boxes 51, 61 are integrally connected.

[0012]

However, in the electric junction box shown in FIG. 4, a single-pole fuse block 33 is connected to a plural-pole fuse block 31 or a single-pole fuse block 33 one by one. Due to the structure, a work space is required at the time of assembling, and the length of the block becomes longer and the strength becomes weaker as compared with the increased number of fuses.

The relay box shown in FIG. 5 differs from the relay box 51 in the structure of the convex thick portion 53 and the guide groove 54 provided on one relay box 51 and the fitting plate portion 63 provided on the other relay box 61. Therefore, a set of relay boxes 51 and 61 is always required for expansion, which may cause waste. In addition, there is a problem that the strength is weakened when a plurality of relay boxes are added.

An object of the present invention is to improve the versatility by connecting a plurality of cassette blocks and extension blocks to the block body of the electric junction box so that the required number of cassette blocks can be increased in accordance with specifications. An object of the present invention is to provide a block structure of an electric junction box.

[0015]

An object of the present invention is to provide a block structure of an electric connection box according to claim 1, wherein a block of an electric connection box 1 into which a plurality of electric parts such as a relay can be inserted. In the structure, a block body in which an electric component insertion portion is provided on an upper surface, a plurality of cassette blocks in which various electric components are inserted, and a plurality of cassette blocks which can be mounted on side walls of the block body and have a plurality of And a common cassette fitting portion into which the additional block frame or the cassette block can be inserted is provided on a side wall of the block main body. A fitting portion lock corresponding to the cassette fitting portion is provided on a side wall, and the fitting portion lock is provided on one outer peripheral wall of the additional block frame, and is provided on the inner side. The block structure of the electric junction box, wherein the cassette fitting portion into which the cassette block can be inserted is provided so that the plurality of cassette blocks and the additional block frame can be connected to the block main body. Can be solved by

In the block structure of the electric junction box having the above-described structure, a required number of cassette blocks can be increased in accordance with the specifications of an automobile or the like by connecting a plurality of cassette blocks and extension blocks to the block body. Thus, an electric junction box having excellent versatility can be obtained.

Another object of the present invention is to provide a block structure of an electric junction box according to claim 2, wherein the outer peripheral wall other than the outer peripheral wall provided with a fitting portion lock of the additional block frame. However, the problem can be solved by the electric connection box according to claim 1, wherein the cassette fitting portion for mounting the cassette block or another additional block frame is provided.

In the block structure of the electric junction box having the above-described structure, the cassette block or the other extension block frame is mounted on the outer peripheral wall other than the outer peripheral wall provided with the fitting portion lock of the extension block frame. By providing the cassette fitting portion, the required number of cassette blocks can be further increased in accordance with the specification of an automobile or the like, and a more versatile electric connection box can be obtained.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the block structure of an electric junction box according to the present invention will be described in detail with reference to FIGS. FIG. 1 is an exploded perspective view showing a block structure of an electric junction box of the present invention, FIG. 2 is an exploded perspective view showing a case where a cassette block is mounted on a block main body in FIG. 1, and FIG.
FIG. 2 is a perspective view showing the back side of the cassette block in FIG. 1.

As shown in FIG. 1, the electric junction box 1 of the present embodiment comprises a block body 2 and an additional block frame 3 which is detachably mounted on the block body. A cassette block 4 is detachably mounted on each of the block frames 3. The block main body 2 is formed in a substantially rectangular parallelepiped. A plurality of relay insertion portions 6 are provided on an upper surface 5 of the block main body 2, and a bus bar or the like (not shown) is incorporated therein. An unconnected connector or the like is inserted.

A plurality of cassette fitting portions 8 are provided on a side wall 7 of the block main body 2, and mounting arms 1 for fixing to the vehicle body side are provided on other opposite side surfaces 9, 9.
0 and 10 are provided. The cassette fitting portion 8 includes:
Guide grooves 12 slidable in the longitudinal direction on each outer surface
And a locking portion 13 provided at a substantially intermediate portion of the guide portion. The locking portion 13 includes a flexible inclined piece 14 which is inclined so that the upper side is separated from the side wall 7 and is bent toward the side wall by the action of an external force, and a locking hole 15 provided at the center of the flexible inclined piece. It is composed of

The cassette fitting portion 8 of the block body 2
Corresponds to a fitting portion lock 19 of the additional block frame 3 and a fitting portion lock 19 of the cassette block 4 which will be described later. The additional block frame 3 can be connected as shown in FIG. The cassette block 4 can be directly connected as shown.

The extension block frame 3 is composed of a substantially rectangular frame 16 and a plurality of partition walls 17, and one outer peripheral wall 18 of the frame 16 has a cassette fitting portion of the block body 2. A plurality of fitting locks 19 that can be engaged with the lock 8 are provided. A plurality of cassette fitting portions 8 are provided on the other outer peripheral wall 20 of the frame portion 16.
The other side surfaces 21, 21 are provided with mounting arms 22, 22 for fixing to the vehicle body side.

The additional block frame 3 is provided with a partition wall 1.
7, a plurality of storage frames 23, and one of the wall surfaces 24, 24 in the storage frame is provided with a cassette fitting portion 8 respectively.
Is provided. Further, the other guide walls 26, 26 are formed on the other wall surfaces 25, 25 in the housing frame 23, respectively. Furthermore, the inner opposed two wall surfaces 27, 2
7, a locking recess 28 for locking the cassette block 4 is formed.

As shown in FIG.
Is provided with a component insertion portion 29 on the upper surface of which an electric component such as a fuse can be inserted. The electric component is connected to a connection terminal or the like inserted from below through a bus bar circuit (not shown) incorporated therein. Connected to. Further, the cassette block 4 has a fitting portion lock 19 integrally provided on one side wall, and is inserted into a guide groove 26 formed in each of the housing frames 23 of the additional block frame 3 on the other side wall. A protrusion 30 is formed. Further, lock claws 31 are provided on the other side walls to be locked in the locking recesses 28 in the housing frame 23.

The fitting portion lock 19 is provided with a pair of ridges 32 which are inserted into the respective guide grooves 12 formed in the cassette fitting portion 8 and are slid in the vertical direction at both ends. A vertically long concave portion 33 is formed at the center, and a locking protrusion 34 that engages with the locking portion 13 in the cassette fitting portion 8 is provided in the concave portion.

In the block structure of the electric junction box according to the present embodiment having the above-described structure, a cassette fitting portion 8 is provided on the side wall 7 of the block main body 2 of the electric connection box 1 and a fitting corresponding to the cassette fitting portion is provided. Cassette block 4 having joint lock 19
And an additional block frame 3 having a fitting portion lock 19 on the outer peripheral wall 18 and a cassette fitting portion 8 inside, and connecting the plurality of cassette blocks 4 and the additional block frame 3 to the block body 2. By doing so, a variety of cassette blocks 4 can be increased by a predetermined number in response to a change in the specification of an automobile or the like, which is excellent in versatility.

That is, for example, four cassette blocks 4
In order to add the additional blocks, the fitting block lock 19 provided on the additional block frame 3 is attached to the cassette fitting section 8 of the side wall 7 of the block body 2 in the direction of arrow B, and the three cassette blocks 4 are attached to the additional block. The frame 3 is inserted into the housing frame 23, and the remaining one is mounted on the outer peripheral wall 20 of the additional block frame 3.

Therefore, it is easy to increase the number of various kinds of cassette blocks 4 by a predetermined number according to the specifications of automobiles and the like, and it is possible to correspond to different specifications, thereby obtaining a highly versatile electric junction box. be able to. Therefore, the number of cassette blocks 4 can be increased in accordance with the specifications of the vehicle type, and a predetermined number of various kinds of cassette blocks corresponding to the specifications of the vehicle type can be increased, so that waste of space can be prevented. Further, since the mounting arm 22 is provided on the additional block frame 3, the mounting arm 22 can be fixed to an appropriate place on the vehicle body side, so that the holding strength of the cassette block 4 does not decrease.

Further, the block structure of the electric junction box according to the present embodiment has the cassette fitting portion 8 on the other outer peripheral wall 20 of the additional block frame 3 as described above, and the block main body 2 has a plurality of cassette blocks. By connecting the extension block frame 3 and the extension block frame 3, the number of cassette blocks 4 can be further increased in response to a change in the specification of the vehicle, and a more versatile electric connection box can be obtained.

That is, since another additional block frame 3 can be mounted on the additional block frame 3 mounted on the side wall 7 of the block body 2, seven or more cassette blocks 4 can be expanded. Become.

Therefore, the cassette blocks 4 can be further increased, so that a larger number of cassette blocks 4 can be increased according to the specifications of the vehicle type, and the cassette blocks 4 can be easily expanded. Since it can be implemented, the versatility of the electric junction box can be further enhanced, and unnecessary space can be eliminated. Further, since the mounting arm 22 is provided on the additional block frame 3, it can be fixed to an appropriate place on the vehicle body side via the mounting arm, so that the holding strength of the cassette block 4 is not reduced.

[0033]

As described above, in the block structure of the electric junction box according to the present invention, a block main body having an electric component insertion portion provided on the upper surface thereof and a plurality of electric components having various electric components inserted thereinto are provided. A common block that includes a cassette block and an additional block frame that can be mounted on the side wall of the block main body and that can be mounted with a plurality of cassette blocks inside and outside, and that can be inserted into the side wall of the block main body. The cassette fitting portion is provided, a fitting portion lock corresponding to the cassette fitting portion is provided on a side wall of the cassette block, and a fitting portion lock is provided on one outer peripheral wall of the additional block frame, and the inside thereof is provided inside. By providing a cassette fitting portion into which a cassette block can be inserted, a plurality of cassette blocks and an additional block frame can be connected to the block body. It can be.

Therefore, since the number of cassette blocks can be increased according to the specifications of the vehicle type, an electric connection box having excellent versatility that can be applied to a plurality of vehicle types without being limited to a specific vehicle type can be obtained. Can be. In addition, it is possible to add a predetermined number of various kinds of cassette blocks corresponding to the specifications of the vehicle type, so that useless space can be prevented. Thus, the cassette block can be fixed at an appropriate position, so that the holding strength of the cassette block can be prevented from lowering.

Further, in the block structure of the electric junction box according to the present invention, the outer peripheral wall other than the outer peripheral wall provided with the fitting portion lock of the additional block frame mounts the cassette block or another additional block frame. Cassette fitting portion.

Accordingly, it is possible to increase the number of various kinds of cassette blocks by a predetermined number in accordance with the specifications of the vehicle type, so that the versatility of the electric junction box can be further improved, and despite the increase in the number of cassette blocks. As the holding strength of the cassette block can be prevented from lowering,
A highly versatile and highly reliable electrical junction box can be obtained.

[Brief description of the drawings]

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

FIG. 2 is an exploded perspective view when the cassette block in FIG. 1 is mounted on a block main body.

FIG. 3 is a perspective view of the back side of the cassette block in FIG. 1;

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

FIG. 5 is an exploded perspective view of a conventional relay box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric connection box 2 Block main body 3 Expansion block frame 4 Cassette block 6 Insertion part 7 Side wall 8 Cassette fitting part 10 Mounting arm 11 Guide part 12 Guide groove 13 Lock part 14 Flexible inclined piece 15 Lock hole 16 Frame part 17 Partition wall 18 One outer peripheral wall 19 Fitting part lock 20 Other outer peripheral wall 22 Mounting arm 23 Housing frame 26 Guide groove 28 Locking concave part 29 Component mounting part 30 Projection part 31 Lock claw 32 Projection 33 Depression 34 Locking projection

Claims (2)

[Claims] 1. A block structure of an electric junction box into which a plurality of electric components such as a relay can be inserted, wherein a block body having an electric component insertion portion provided on an upper surface;
A plurality of cassette blocks into which various electric components are inserted, and an additional block frame which can be mounted on a side wall of the block body and in which a plurality of the cassette blocks can be mounted inside and outside; A common cassette fitting portion into which the additional block frame or the cassette block can be inserted is provided on a side wall of the cassette block, and a fitting portion lock corresponding to the cassette fitting portion is provided on a side wall of the cassette block. The fitting block lock is provided on one outer peripheral wall of the additional block frame, and the cassette fitting section into which the cassette block can be inserted is provided inside, so that the plurality of cassette blocks are provided on the block body. And a block structure of the electric junction box, which can connect the additional block frames. 2. An outer peripheral wall other than an outer peripheral wall provided with a fitting portion lock of the additional block frame includes the cassette fitting portion for mounting the cassette block or another additional block frame. The electrical junction box according to claim 1, wherein