JP2001037050A - Electrical junction box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent rain water, etc., from penetrating into a fuse block through a retainer insertion hole. SOLUTION: An electrical junction box has a fuse block 10, which has retainers 13 and (14) inserted through sidewalls 10a and 10b and lock loaded fuses at prescribed positions and upper and lower covers 50 and 30 in which the fuse block 10 is housed. In this case, sidewall parts 31 and 35 which cover the end parts of the retainers 13 and (14) inserted into the fuse block 10 are formed on one 30 of the upper and lower covers 50 and 30, and the other sidewall parts 51 and 37 which cover the wall parts 31 and 35 are formed on the other cover 50. Waterproof means A and D, which have a labyrinth composed of the one sidewall parts 31 and 35 and the other sidewall parts 51 and 37 in the state that the other cover 50 and the one cover 30 are coupled with each other are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric junction box mainly mounted on an automobile.

[0002]

2. Description of the Related Art FIG. 5 shows an electric junction box mounted on a vehicle. This electric connection box has a fuse accommodating portion and the like for loading a fuse therein.
terminal insertion groove 2 for accommodating the terminal of a thick electric wire for power supply
And the upper and lower covers 3 and 4 that cover the fuse block 1 in order to protect the fuse block 1.

The fuse block 1 is accommodated in the lower cover 4 and the upper cover 3 is put on the fuse block 1 in this state, and the locking portion 5 of the upper cover 3 is engaged with the locking portion 6 of the lower cover 4. Protected from rainwater.

[0004]

Incidentally, a retainer 7 is loaded into the fuse block 1 in order to lock the fuse loaded therein in the loaded state. Since the retainer 7 is inserted from the end wall 1 b of the fuse block 1, a retainer insertion hole 8 is formed in the end wall 1 b of the fuse block 1. Therefore, the position of the retainer 7 is located at the junction of the upper and lower covers 3 and 4, and there is a possibility that rainwater or the like may enter from the junction.

An object of the present invention is to solve the above-mentioned conventional problems, and to provide an electric junction box in which rainwater or the like is prevented from entering a fuse block from a retainer insertion hole.

[0006]

The above object of the present invention is achieved by the following constitution. An end of the retainer inserted into the fuse block in an electrical junction box including a fuse block having a retainer inserted from a side wall and locking a loaded fuse in a predetermined position, and upper and lower covers for housing the fuse block. Forming one of the walls covering the portion on one of the upper and lower covers, and forming the other wall on the other cover to cover the wall, and the other cover and the one cover are assembled. An electrical junction box comprising a waterproofing means for forming a labyrinth between the one wall portion and the other wall portion in a folded state.

[0007] Each portion constituting the guide means is formed at the meeting edge of the upper and lower covers, and the guide means guides one wall constituting the labyrinth to the other wall, whereby the locking means is provided. The electric junction box as described above, which is positioned.

[0008] The electrical junction box according to the above description, wherein a locking means for locking the upper cover and the lower cover is provided on the guide means.

According to the electric junction box, the retainer insertion hole of the fuse block is covered by the double wall.
That is, a labyrinth is formed around the retainer insertion hole by the walls of the upper and lower covers. Accordingly, it is possible to effectively prevent rainwater or the like from entering the inside of the cover from the outside.

According to the electric junction box described above, one wall of the labyrinth formed on the upper cover by the guide means is guided to the other wall of the labyrinth formed on the lower cover. The guide positions the locking means in the proper locking position. Therefore, the one wall portion and the other wall portion constituting the labyrinth can smoothly associate without collision, and the subsequent locking operation of the locking means can be performed easily and accurately.

According to the electric junction box described above, when the upper cover is brought into contact with the lower cover by the guide means, one wall constituting the labyrinth and the other wall are smoothly joined without collision, Further, the locking position accuracy of the locking means is extremely high, and the upper cover and the lower cover are locked to each other as they are. Therefore, the assembling work of the upper cover and the lower cover becomes extremely easy.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of an electric junction box according to the present invention will be described below with reference to FIGS. FIG. 1 is an exploded view as viewed from one side of the electric connection box, and FIG. 2 is an exploded view as viewed from the other side of the electric connection box. FIG.
(A), (b) is a partial cross-sectional perspective view of the waterproofing means in FIG. 1, and FIG. 3 (b) is a view seen from the arrow direction in FIG. 3 (a). 4 (a) and 4 (b) are partial cross-sectional perspective views of the waterproofing means, the guiding means and the locking means in FIG. 2, and FIG. 4 (b) is a view as seen from the direction of the arrow in FIG. 4 (a). It is.

The electric connection box includes a fuse block 10 for housing a fuse, and a lower cover 30 and an upper cover 50 for housing the fuse block 10.

The fuse block 10 has two end faces 10.
a and 10b have retainer insertion holes 11 and 12, respectively.
The fuse block 1 is inserted into the retainer insertion holes 11 and 12.
Retainers 13 and 14 are inserted to lock the fuse loaded in 0 in the loaded state, respectively.

The retainers 13 and 14 are provided at one end with lids 15 and 16 for closing the retainer insertion holes 11 and 12, respectively.
It has two support pieces 17, 18, 19, 20 extending vertically from the back surfaces of the lids 5, 16, and has two ribs 21, 22, 23, 24 on the surfaces of the lids 15, 16. .

In addition, claws 25 are formed at four places below one side face 10c of the fuse block 10, and claws (not shown) are formed at three places below the other side face. In addition, a terminal insertion groove 26 for accommodating the terminal of the thick electric wire for power supply is formed on one side surface 10c.

On one end wall 30a of the lower cover 30, one of waterproof means A for covering the retainer insertion hole 11 of the fuse block 10 is formed. One of the waterproofing means A is one in which a wall 31 having a U-shaped horizontal section is provided upright on an end wall 30a.

On the end wall 30a, one of the guide means B and one of the locking means C are formed side by side with the wall portion 31. One of the guide means B has a wall section 32 having a U-shaped horizontal section and a flat wall section 33 erected on the end wall 30a in parallel, and a lower portion of the wall sections 32, 33 is provided. Are connected to each other to form a bottomed rectangular cylinder. And the wall 3
A claw 34 constituting one of the locking means C is formed on the inner surface of the upper end of the second central wall 32a.

On the other end wall 30b of the lower cover 30, one of the waterproof means D for covering the retainer insertion hole 12 of the fuse block 10, one of the guide means E and one of the locking means F are provided. It is formed in one place. One of the waterproofing means D is one in which a wall section 35 having a U-shaped horizontal cross section is erected on the end wall 30b, and one of the guiding means E is
A wall portion 36 having a U-shaped horizontal section is formed upright on the end wall 30b in parallel with the wall portion 35, and the wall portions 35, 36 are provided.
Are connected to each other to form a bottomed rectangular cylinder. On the inner surface of the upper end of the central wall 36a of the wall 36, a claw 37 constituting one of the locking means F is formed.

Further, the lower cover 30 has one side wall 30c.
It has four locking tongues 39 having a rectangular hole 38 at the upper edge thereof and four locking tongues 41 having a rectangular hole 40 at the upper edge of the other side wall 30d. A tongue piece 42 for covering the terminal insertion groove 26 of the fuse block 10 is formed on the upper edge of the one side wall 30c.

The other end of the waterproof means A which covers the retainer insertion hole 11 of the fuse block 10 is formed on one end wall 50a of the upper cover 50. The other end of the waterproofing means A is formed by a box-shaped portion 51 which opens downward.

The other end of the guide means B and the other end of the locking means C are formed on the end wall 50a alongside the box-shaped portion 51. The other of the guide means B is constituted by side plates 52, 52 erected from the end wall 50a, a side plate 53 connecting the side plates 52, 52, and a partition wall 54 inserted between lower portions of the side plates 52, 52. It is configured. The partition walls 54 are formed so as to cover a part of the lower portions of the side plates 52, 52.
A bottom plate portion 54a disposed perpendicular to the base plates 2 and 52; and a side plate portion (not shown) extending downward from the bottom plate portion 54a.
And are formed in an L-shape. And the side plate 53
Are provided with cuts 55, 55 from the upper end at the junction of the side plate 53 and the side plates 52, 52.
A hole 56 is formed in the upper part of the side plate 53 defined by 55.

On the other end wall 50b of the upper cover 50, the other of the waterproof means D for covering the retainer insertion hole 12 of the fuse block 10, the other of the guide means E, and the other of the locking means F are provided. It is formed in one place.

The other end of the guide means E is provided with side plates 57, 57 erected from the end wall 50b, a side plate 58 connecting the side plates 57, 57, and a partition inserted between lower portions of the side plates 57, 57. 59. The partition wall 59 is formed so as to cover a part of the lower portion of the side plates 57, 57.
The bottom plate portion 59a is disposed perpendicular to the base plates 7 and 57, and the side plate portion 59b extends downward from the bottom plate portion 59a to form an L-shape. And, on the side plate 58,
Cuts 60, 60 (see FIG. 4 (b)) are formed from the upper end at the junction between the side plates 58 and the side plates 57, 57. 61 are formed.

The fuse block 10, the lower cover 30, and the upper cover 50 configured as described above are assembled together as follows.

In the fuse block 10, retainers 13 and 14 are loaded into retainer insertion holes 11 and 12, respectively. And this fuse block 10 has its claw 2
5 and the like are pushed in while bending the locking tongue pieces 39 and 41 of the lower cover 30 to engage with the holes 38 and 40 and assembled to the lower cover 30.

Next, the upper cover 50 is put on the fuse block 10 so as to cover the fuse block 10, and the other of the guide means B and E of the upper cover 50 is matched with one of the guide means B and E of the lower cover 30. Is pressed toward the lower cover 30.

Then, in the guide means B, the other side of the guide means B, that is, the side plates 52, 52, 53 of the upper cover 50 are connected to one of the guide means B, ie, the side walls 32b, 32b of the wall portion 32 of the lower cover 30, and the central wall. 32a is used as a guide, and the side wall (not shown) of the partition wall 54 of the upper cover 50 is
The upper cover 50 is attached to the lower cover 3 using the wall portion 33 as a guide.
Guide to 0.

In the guide means E, similarly to the guide means B, as shown in FIG. 4, the other of the guide means B, that is, the side plates 57, 57, 58 of the upper cover 50 are connected to the guide means E.
, That is, the side wall 36 of the wall portion 36 of the lower cover 30
b, 36b and the central wall 36a are used as guides, and the side plate 59b of the partition wall 59 of the upper cover 50 is
The upper cover 50 is guided with respect to the lower cover 30 using 5 as a guide. At this time, the claw 37 of the lower cover 30 constituting the locking means F and the hole 61 of the side plate 58 of the upper cover 50 are accurately positioned. That is, the partition wall 59 of the upper cover 50 is guided by the wall portion 35 of the lower cover 30, so that the claw 37 of the lower cover 30 and the hole 61 of the side plate 58 of the upper cover 50 are located at the appropriate locking positions. In addition, the locking operation can be easily and reliably performed.

As shown in FIG. 3, the waterproofing means A is located at a position facing the retainer 13 of the fuse block 10, and the box-shaped portion 51 of the upper cover 50 has a U-shaped horizontal section. A wall part that covers the upper part of the part 31, closes the upper opening of the wall part 31 with a ceiling wall 51 a of the box-shaped part 51, and has a side wall 51 b whose horizontal cross section has a U shape and a horizontal cross section of the lower cover 30 has a U shape Surround 31 and form a labyrinth there. The distance between the wall portion 31 and the box-shaped portion 51 constituting the labyrinth is preferably approximately 0 mm, but is preferably 0.5 to 1.0.
mm.

As shown in FIG. 4, the waterproof means D is located at a position facing the retainer 14 of the fuse block 10, and the partition wall 59 of the upper cover 50 has a U-shaped horizontal cross section of the lower cover 30. The upper part of the wall 35 to be formed
9, the upper opening of the wall portion 35 of the lower cover 30 is closed by the bottom plate portion 59a, and the partition wall 5 whose upper cover 50 has a U-shaped horizontal section.
Nine side plate portions 59b surround the wall portion 35 in which the horizontal section of the lower cover 30 has a U-shape, and constitute a labyrinth there. The distance between the wall portion 35 and the partition wall 59 constituting the labyrinth is preferably approximately 0 mm, but is preferably 0.5 to 1.0 m.
m.

When the upper cover 50 is assembled to the lower cover 30 in this manner, the hole 56 in the side plate 53 of the upper cover 50 that constitutes the other of the locking means C has the lower cover 53 that forms one of the locking means C. 30 and the hole 61 of the side plate 58 of the upper cover 50 which constitutes the other of the locking means F engages with the claw 37 of the lower cover 30 which constitutes one of the locking means F. The upper cover 50 is locked to the lower cover 30.

Incidentally, the waterproofing means A,
D, guide means B and E, and locking means C and F are only examples of the present invention, and various structures can be adopted.

[0034]

As described above, according to the first aspect of the present invention,
In the electrical junction box, the retainer insertion hole of the fuse block is covered by the double wall. That is, a labyrinth is formed around the retainer insertion hole by the walls of the upper and lower covers. Therefore, it is possible to effectively prevent rainwater or the like from entering the cover from the outside.

In the electrical junction box according to the present invention, one wall constituting the labyrinth formed on the upper cover by the guiding means is guided by the other wall constituting the labyrinth formed on the lower cover. , The locking member is properly positioned. Therefore, the one wall constituting the labyrinth and the other wall can smoothly associate without collision, and the locking operation can be performed easily and accurately.

In the electric junction box according to the third aspect of the present invention, when the upper cover is brought into contact with the lower cover by the guide means, one wall constituting the labyrinth and the other wall do not collide with each other and smoothly. The upper cover and the lower cover are held together as they are. Therefore, the assembling work of the upper cover and the lower cover becomes extremely easy.

[Brief description of the drawings]

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

FIG. 2 is an exploded perspective view showing the electric junction box shown in FIG. 1 from another direction.

FIG. 3 is a sectional perspective view showing a main part of the electric connection box shown in FIG. 1;

FIG. 4 is a sectional perspective view showing a main part of the electric connection box shown in FIG. 1;

FIG. 5 is an exploded perspective view showing a conventional electric junction box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Fuse block 11, 12 Retainer insertion hole 13, 14 Retainer 15, 16 Lid 25 Claw 30 Lower cover 30a One end wall 30b The other end wall 30c One side wall 30d The other side wall 31 Wall part 32 Wall part 32a Central wall 32b Side wall 33 Wall portion 34 Claw 35 Wall portion 36 Wall portion 36a Central wall 36b Side wall 37 Claw 50 Upper cover 50a One end wall 50b The other end wall 51 Box-shaped portion 51a Ceiling wall 51b Side wall 52 Side plate 53 Side plate 54 Partition 54a Bottom plate 55 notch 56 hole 57 side plate 58 side plate 59 partition wall 59a bottom plate portion 59b side plate portion 60 cut 61 hole A waterproof means B guide means C locking means D waterproof means E guide means F locking means

Claims (3)

[Claims] 1. An electric connection box comprising: a fuse block having a retainer inserted from a side wall to lock a loaded fuse in a predetermined position; and an upper and lower cover for accommodating the fuse block. Forming one wall portion covering the end portion of the retainer formed on one cover of the upper and lower covers, and forming the other wall portion covering the wall portion on the other cover; An electrical junction box, comprising: a waterproof means for forming a labyrinth between the one wall portion and the other wall portion in a state where the cover is assembled. 2. Each part constituting a guide means is formed at a meeting edge of the upper and lower covers, and the guide means
The electrical junction box according to claim 1, wherein the locking means is positioned by guiding one wall part of the labyrinth to the other wall part. 3. The electric junction box according to claim 2, wherein said guide means is provided with a means for locking said upper cover and said lower cover.