JPH1084614A - Electric junction box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent damage to a bracket at the time of installation to a body and separation of the bracket from the body of the junction box. SOLUTION: A hollow section 17 is formed by extending an upper cover 11 of a junction box body 10 at the area higher than the wiring area 15 where the wiring is laid and a rib is formed within the hollow section 17. An insertion bracket 21 and a screwing bracket 22 attached to the body are projected at the external side of a main cover 11 of the area in which a rib 18 is formed. Since strength of the brackets 21, 22 is enhanced by the rib, it can be prevented that the brackets 21, 22 are damaged and are separated from the main cover 11 with a stress generated when the brackets 21, 22 are installed to the body.

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 used for wiring of an automobile or the like.

[0002]

2. Description of the Related Art FIGS. 5 and 6 show a connection box body of a conventional electric connection box. The connection box body includes a main cover 1 formed of an insulating resin, and an under cover 2 similarly formed of an insulating resin and fitted to a lower portion of the main cover 1, and has a bus bar therein. Wiring boards are housed in a stacked state via an insulating plate. Reference numeral 3 denotes a wiring portion where the wiring board is provided.

[0003] The connection box main body is provided with brackets 4 and 5 for being assembled to the body of an automobile. The brackets 4 and 5 are formed integrally with the main cover 1 so as to protrude from both sides of the main cover 1, and 4 is an insertion bracket to be engaged by being inserted into a mounting hole on the vehicle body panel side, and 5 is a vehicle body panel This is a screw tightening bracket that is coupled to the receiving bracket on the side by screwing. The screw tightening bracket 5 has a through hole 6 through which a screw passes. Reference numeral 7 denotes a hood formed on the upper surface of the main cover 1, on which a relay, a fuse and the like are mounted.

[0004]

However, in the conventional electric connection box, when the connection box main body is mounted on the vehicle body panel, the insertion bracket 4 is damaged by the insertion, and the root portion of the screw tightening bracket 5 is not screwed down. However, there was a problem that it was easy to peel off due to the torque of the above, and it was not possible to attach it securely.

For this reason, it is conceivable that ribs are formed inside the main cover 1 on which these are formed to reinforce the strength. However, as shown in FIG. Since it is the wiring portion 3 where the wiring board is disposed, the rib cannot be formed, and reinforcement is impossible.

In the conventional structure, when an external force acts on the brackets 4, 5, the external force is directly applied to the main cover 1.
The under cover 2 is disengaged from the main cover 1 due to the deformation transmitted to the under cover 2 and the under cover.

The present invention has been made in consideration of such conventional problems, and has an electric structure having a structure capable of preventing a bracket attached to a vehicle body panel from being damaged or peeled off, and preventing an under cover from being detached by an external force. The purpose is to provide a junction box.

[0008]

In order to achieve the above object, an object of the present invention is to provide a connection box body by extending a connection box body outward from a wiring portion where a wiring board is provided. It is characterized by comprising a formed hollow part, a rib formed inside the hollow part, and a bracket protruding from the outside of the connection box main body at a part where the rib is formed and attached to a vehicle body. .

In this structure, the rib can be provided in the hollow portion without interfering with the wiring board or the under cover.
The provision of the ribs increases the strength. Since the bracket is protruded in correspondence with the rib forming portion, the strength is increased, and the bracket is not damaged or peeled even when an excessive stress is applied when the bracket is attached to the vehicle body.

[0010] In addition to the increase in strength, the bracket is provided at the rib forming portion, that is, in the hollow portion, and is separated from the undercover on which the wiring board is disposed. Therefore, even when an external force acts on the bracket, the undercover is not deformed by the external force, and the undercover does not come off the main cover.

Further, by forming the ribs, the flow of the resin at the time of molding the connection box body is improved, and the moldability is improved.

According to a second aspect of the present invention, in the first aspect of the present invention, the rib extends from a protruding portion of the bracket in the connection box body toward the inside of the hollow portion.

[0013] Thus, since the rib and the bracket are continuous, the strength of the bracket can be directly increased.

According to a third aspect of the present invention, in the first or second aspect, the rib is parallel to a projecting direction of the bracket.

When the rib is parallel to the bracket, the rib can reliably receive the force acting on the bracket. Further, the flow of the resin during the molding is further improved, and the moldability is improved.

A fourth aspect of the present invention is the invention according to any one of the first to third aspects, wherein a hood portion for mounting a relay, a fuse, or the like is provided in the hollow portion, and the rib is connected to the hood portion. The bracket is connected to a protruding portion of the bracket.

Since the rib connects the hood to the bracket, the strength of the bracket is increased by the hood in addition to the increase in strength by the rib. Further, at the time of molding, the flow of the resin to the bracket and the hood portion via the ribs is smoothed.

[0018]

1 and 2 show an embodiment of the present invention, in which reference numeral 10 denotes a connection box main body, and a main cover 11 and an under cover 12 formed of an insulating resin.
It is constituted by assembling.

The main cover 11 is formed in a box shape whose upper and side surfaces are closed and whose lower surface is open. A lock projection 13 projecting inward of the main cover 11 is provided at an end of the open lower surface. Are formed. The under cover 12 is formed in a shape having an open upper surface, and a lock step portion 14 is formed at an intermediate portion of the side surface. The connection box main body 10 is assembled by inserting the under cover 12 from the lower surface of the main cover 11 and engaging the lock projection 13 with the lock step portion 14.

A wiring board having a bus bar is inserted into the under cover 12 in a state of being laminated via an insulating plate. Reference numeral 15 denotes a wiring portion where the wiring board is provided. The wiring portion 15 of this wiring board is
And the main cover 11 are provided at a portion where they overlap.

The main cover 11 is a wiring portion 1 of the wiring board.
5, that is, extending outward (upward in the illustrated example) from the overlapped portion with the undercover 12, and a hollow portion 17 is formed in the upper portion of the main cover 11 by the extended wall portion 16. Is formed. The hollow portion 17 is provided above a portion where the under cover 12 overlaps, so that the inside of the hollow portion 17 is a cavity in which a wiring board is not arranged. As shown, a rib 18 is formed.

Reference numeral 19 denotes an open upper surface. The main cover 11 is used to mount a relay or a fuse from the upper surface.
Hood portions formed at a plurality of positions. Each hood portion 19 is provided above the wiring portion 15 so as to face the wiring portion 15 of the wiring board.
It is arranged so as to be located in one hollow portion 17.

The above-mentioned rib 18 is provided in the hood 1
It is provided so as to connect between 9 and the extension wall 16 of the main cover 11. In this case, the corresponding hood section 1
A plurality of ribs 18 are formed between the extension 9 and the extension wall 16. By forming the plurality of ribs 18 on the extension wall portion 16 of the main cover 11 in this manner,
The strength of the extension wall 16 can be increased.

The connection box body 10 is formed with brackets 21 and 22 for attachment to a vehicle body. 21
Is an insertion bracket that is inserted into a mounting hole of the vehicle body panel to engage with the vehicle body panel, and protrudes from one end of the main cover 11. Reference numeral 22 denotes a screw-fastening bracket that is coupled to a receiving bracket of the vehicle body panel by screwing, and protrudes from the other end of the main cover 11 opposite to the insertion bracket 21. The screw fastening bracket 21 has a through hole 23 through which a fixing screw passes.

The brackets 21 and 22 project from the outside of the main cover 11 and are attached to the vehicle body panel.
7 is located on an extension wall 16 on which the main cover 11 is extended, and protrudes outward from the extension wall 16. Therefore, the respective brackets 21, 22
Is connected to a rib 18 via an extended wall portion 16, and the rib 18 extends from the projecting portions of these brackets 21, 22 in parallel with the inside of the hollow portion 17 to reach the hood portion 18.

In such a structure, the brackets 21, 2
2 protrudes from the rib 18 forming portion, thereby increasing the strength of the brackets 21 and 22. For this reason, even if excessive stress acts at the time of attachment to the body panel,
There is no breakage or peeling from the main cover 11. Further, since the brackets 21 and 22 are provided corresponding to the hollow portions 17, they are separated from the under cover 12. Therefore, even if an external force acts on the brackets 21 and 22, the external force is not directly transmitted to the undercover 12, and the undercover is not deformed and does not come off the main cover. In addition, by forming the ribs 18, the flow of resin when molding the main cover 11 is improved, the moldability is improved, and the defective rate is reduced. In this embodiment, the rib 18 is provided so as to be parallel to the brackets 21 and 22.
As a result, the force acting on the brackets 21 and 22 is
8, the resin can be reliably prevented from being damaged or peeled off, and the resin flows well when the main cover 11 is molded, so that the moldability is improved.

FIG. 3 is a bottom view of a main cover 31 according to another embodiment of the present invention, and FIG. 4 is a front view thereof. An insertion bracket 32 protrudes from an outer surface of one end of the main cover 31, and a screw tightening bracket 33 protrudes from an outer surface of the other end. An undercover (not shown) is attached to a lower portion of the main cover 31. The undercover is attached so as to overlap a portion below a boundary 34 shown in FIG.

With the boundary line 34 as a boundary, the main cover 3
1 is extended upward, and the above-described insertion bracket 32 and screw tightening bracket 33 are
It protrudes from the outer surface. Although not shown, the inside of the extension wall portion 35 is a hollow hollow portion, and ribs 36 and 37 are formed in the hollow portion.

Reference numeral 36 denotes a rib provided on the side of the insertion bracket 32, which extends from the projecting portion of the insertion bracket 32 into the hollow portion of the main cover 31, and has an extended end formed in the main cover 31. It is connected to the mounting part 38. The rib 37 is provided on the screw tightening bracket 33 side. Like the rib 36, the rib 37 also extends into a hollow portion in the main cover 31 and is connected to a component mounting portion 39 in the main cover 31.

Therefore, also in this embodiment, the strength of the brackets 32, 33 is increased by the ribs 36, 37, so that breakage and peeling do not occur, the under cover does not come off, and the flow of resin is good. As a result, moldability is also improved.

Although the above embodiment has been described as applied to the main cover, the hollow portion, the rib, and the bracket may be provided on the undercover, and the undercover may be attached to the vehicle body.

[0032]

According to the first aspect of the present invention, since the strength of the bracket attached to the vehicle body is increased by the rib provided in the hollow portion, the bracket is damaged or peeled when the connection box body is mounted on the vehicle body. Can be prevented. Further, since the bracket is provided at the rib forming portion, even if an external force acts on the bracket, the undercover is not deformed by the external force and the undercover does not come off. Furthermore, the flow of the resin at the time of molding the connection box main body by the rib formation is improved, and the moldability is improved.

According to the second aspect of the present invention, in addition to the effect of the first aspect of the present invention, since the rib and the bracket are continuous,
The strength of the bracket can be directly increased.

According to the invention of claim 3, claim 1 or 2
In addition to the effects of the invention, the ribs are parallel to the bracket, so that the ribs can reliably receive the force acting on the bracket, and the flow of the resin during molding is further improved, and the moldability is improved. improves.

According to the fourth aspect of the present invention, in addition to the first to third aspects, since the rib connects the hood to the bracket, the strength of the bracket is also increased by the hood in addition to the increase in strength by the rib. With the increase, the flow of resin to the bracket and the hood through the ribs is smoothed,
Formability is improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of one embodiment of the present invention.

FIG. 2 is a plan view of one embodiment.

FIG. 3 is a bottom view of another embodiment.

FIG. 4 is a front view of another embodiment.

FIG. 5 is a sectional view of a conventional electric junction box main body.

FIG. 6 is a bottom view of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Connection box main body 11 Main cover 12 Under cover 13 Lock projection 14 Lock step part 15 Wiring part of wiring board 16 Extended wall part 17 Hollow part 18 Rib 19 Hood part 21 Insert bracket 22 Screw bracket

Claims (4)

[Claims] 1. A hollow portion formed in a connection box main body by extending a connection box main body outward from a wiring portion where a wiring board is provided, and a rib formed inside the hollow portion. ,
An electrical junction box, comprising: a bracket protruding from the junction box body at the rib forming portion and attached to a vehicle body. 2. The electrical connection box according to claim 1, wherein the rib extends from a protruding portion of a bracket in the connection box body toward the inside of the hollow portion. 3. The electric connection box according to claim 1, wherein the rib is parallel to a projecting direction of the bracket. 4. The invention according to claim 1, wherein a hood portion for mounting a relay, a fuse or the like is provided in the hollow portion, and the rib is formed by projecting the hood portion and the bracket. An electric connection box, which is connected to parts.