JP2000253537A - Electric junction box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric junction box capable of easily mounting a case on the installation surface of a vehicle. SOLUTION: A positioning protrusion 30 is formed protrudingly at a case 13. In an installation surface 12a of a vehicle panel 12, an insertion hole 32 is formed which permits the positioning protrusion 30 to be inserted. The positioning protrusion 30 is formed so as to be incapable of moving in parallel to the installation surface 12a, when the positioning protrusion 30 is inserted into the insertion hole 32 by a prescribed amount or more. Therefore, this electric junction box 11 is positioned in mounting the electric junction box 11 on the vehicle panel 12 and it is thus possible to easily install the electric junction box 11 on the vehicle panel 12.

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 which is mounted vertically.

[0002]

2. Description of the Related Art Conventionally, an electric connection box provided with electric parts such as a relay is provided in an engine room of an automobile. The mounting structure of the electric junction box is as follows. That is, as shown in FIGS. 8A and 8B, a plurality of screw insertion holes 72 are formed in a vehicle panel 71 provided between an engine room and a vehicle compartment of a vehicle. Screws 74 projecting from the rear surface of the case body 73 penetrate through the respective screw insertion holes 72, and the tips of the screws 74 protrude toward the vehicle interior. Then, by tightening the nut 75 to the tip of the screw 74,
A case body 73 is attached to the vehicle panel 71 vertically.

[0003]

However, since the conventional electric junction box is mounted vertically, it is difficult to see the position of each screw insertion hole 72. For this reason, each screw 7
4 is difficult to insert into the screw insertion hole 72. Therefore, there is a problem that it is difficult to attach the case body 73 to the vehicle panel 71.

A screw 74 is inserted into the screw insertion hole 72 with play. Therefore, the nut 75 must be tightened to each screw 74 in a state where the case body 73 is inclined in the direction of the arrow shown in FIG. 8B. Therefore, nut 7
There was also a problem that the tightening workability of No. 5 was poor.

[0005] The present invention has been made in view of the above problems, and an object of the present invention is to provide an electric junction box in which a case body can be easily attached to an installation surface of a vehicle body.

[0006]

In order to solve the above-mentioned problems, according to the present invention, a plurality of screw insertion holes formed in a mounting surface of a vehicle body are provided with a plurality of screw holes protruding from a rear surface of a case body. Respectively, and by tightening nuts to the screws, a positioning protrusion is provided on one of the vehicle body and the case body in the electric connection box vertically mounted on the installation surface, and the positioning protrusion is provided on the other. An insertion portion into which a protrusion can be inserted is provided, and when the positioning protrusion is inserted into the insertion portion by a predetermined amount or more, the positioning protrusion is configured to be immovable in a direction parallel to the installation surface. This is the gist.

According to a second aspect of the present invention, in the electrical junction box according to the first aspect, the positioning protrusion is provided on the case body, and the insertion portion is provided on the vehicle body. And

According to a third aspect of the present invention, in the electrical junction box according to the first or second aspect, the vehicle body is provided with holding means for holding the case main body in a state where the case main body is positioned. Is the gist.

The "action" of the present invention will be described below. According to the invention as set forth in claim 1, the positioning projection is inserted into the insertion portion, and when the insertion amount reaches a predetermined amount or more,
The positioning projection cannot move in a direction parallel to the installation surface. Thereby, the case body is positioned on the installation surface. Therefore, it is possible to smoothly penetrate the screws protruding from the rear surface of the case body into the plurality of screw insertion holes provided on the installation surface of the vehicle body.

According to the second aspect of the invention, the positioning projection is provided on the case body, and the insertion portion is provided on the vehicle body. Therefore, when inserting the positioning projection into the insertion portion, the insertion operation can be performed while looking at the positioning projection. Therefore, the positioning projection can be quickly and easily inserted into the insertion portion. When the case body is assembled, the positioning projection penetrates an insertion portion provided on the vehicle body. Therefore, it is not necessary to secure a space necessary for penetrating the positioning protrusion in the case body. Therefore, the installation space for the electric components and the like provided in the case main body is not reduced, so that the arrangement of the electric components is not hindered.

According to the third aspect of the present invention, the case body is held by the holding means while being positioned.
Therefore, it is possible to prevent the screw from coming out of the screw insertion hole without the case body falling off from the vehicle body before the nut is tightened to the screw.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. The electric junction box 11 shown in FIGS. 1 and 2 is housed in an engine room of an automobile. The electric connection box 11 is provided on a mounting surface 12a of a vehicle panel 12 provided between an engine room and a vehicle compartment.
Attached and fixed. The electric connection box 11 includes a case main body 13 made of a synthetic resin, in which electric parts such as a relay (not shown) are mounted. At the front of the case body 13, covers 14 and 15 made of synthetic resin are detachably provided. The opening formed on the front surface of the case body 13 is covered by covers 14 and 15.

A plurality of connecting portions 17 are formed on the rear surface of the case body 13, and a connector (both not shown) provided at the tip of the wire harness can be connected to the connecting portions 17. An insertion protrusion 18 is formed on the rear surface of the case main body 13 so as to surround the connection portions 17. The insertion projection 18 can be inserted into a rectangular through hole 19 formed on the installation surface 12a of the vehicle panel 12. This through hole 19 is for inserting a wire harness connected to the connection portion 17.

As shown in FIG. 5 and FIG.
8 are provided on both left and right sides through a slit 21.
2, 23 are formed. Each of the locking claws 22 and 23 is adapted to bend in the left-right direction (the direction of the arrow shown in FIG. 5) about the base end thereof. As the insertion projection 18 is inserted into the through hole 19, the tips of the locking claws 22 and 23 are engaged with the edge of the through hole 19. In the present embodiment, the holding means is constituted by the locking claws 22 and 23 and the through hole 19.

A plurality (four) of screws 25 are protruded from upper and lower ends of the rear surface of the case body 13. The screws 25 are respectively arranged outside the insertion projections 18. A plurality of screw insertion holes 26 corresponding to the respective screws 25 are formed on the installation surface 12a of the vehicle panel 12. The screw insertion holes 26 are provided near the corners of the through holes 19, respectively. Then, each screw 25 is penetrated through the screw insertion hole 26, and the nut 27 is fastened to each screw 25, so that the electric connection box 11 is mounted vertically.

As shown in FIGS. 1 and 2, a tapered (conical) positioning projection 30 is formed at the upper end of the rear surface of the case body 13. The positioning protrusion 30 is arranged at an intermediate position between the pair of screws 25 on the upper side.
The length of the positioning projection 30 is longer than that of the screw 25. That is, the projecting amount of the positioning projection 30 from the rear surface of the case body 13 is set to be larger than the projecting amount of each screw 25 from the rear surface of the case body 13.

As shown in FIG. 2 to FIG.
A plurality (four) of ribs 31 protrude from the outer peripheral surface of 0 along its axial direction, and the intervals between adjacent ribs 31 are equal. Each rib 31 extends from the base end of the positioning projection 30 to near the center. An inclined surface 31a is formed at the rear end of each rib 31. Slope 31
The inclination angle of “a” is larger than the taper angle of the positioning projection 30.

The installation surface 12a of the vehicle panel 12 has an insertion hole 32 as a circular insertion portion.
The insertion hole 32 is arranged at an intermediate position between the pair of screw insertion holes 26 on the upper side. The positioning projection 30 penetrates the insertion hole 32. When the positioning protrusion 30 is inserted into the insertion hole 32 by a predetermined amount or more, the positioning protrusion 30 cannot move in a direction parallel to the installation surface 12a of the vehicle panel 12. This is because when the positioning projection 30 is inserted by a predetermined amount or more, the distal end face of each rib 31 is
This is because it is brought into contact with the inner peripheral surface of No. 2.

The electric junction box 11 configured as described above is mounted on the vehicle panel 12 as follows. The electric connection box 11 is made to approach the vehicle panel 12, and the positioning projection 30 is inserted into the insertion hole 32 from the tip. When the insertion amount of the positioning projection 30 reaches a predetermined amount or more (about の the length of the positioning projection 30), the distal end surface of each 31 comes into contact with the inner peripheral surface of the insertion hole 32. . Due to this contact, the positioning projection 30 cannot move in a direction parallel to the installation surface 12a of the vehicle panel 12. Thereby, the case main body 13 is positioned with respect to the installation surface 12a. When the positioning projection 30 is further inserted, the tip of each screw 25 is inserted into the corresponding screw insertion hole 26, and each screw 25 is penetrated through the screw insertion hole 26.

When the screw 25 is inserted, the insertion projection 18 is inserted into the through hole 19. At this time, both locking claws 22, 23
Abuts against the edge of the through hole 19, and the locking claws 22, 23
Deflects inward against its own elastic force. When the insertion projection 18 is further inserted, the locking claws 22 and 23 return to the outside by their own elastic force. Thereby, the heads of the locking claws 22 and 23 are locked to the edge of the through hole 19. Therefore, the case body 13 is prevented from falling off the vehicle panel 12. Thereafter, the nuts 27 are fastened to the respective screws 25. By this tightening, the electric connection box 11 is vertically mounted on the installation surface 12a of the vehicle panel 12.

Therefore, according to the present embodiment, the following effects can be obtained. (1) A positioning projection 30 is provided on the case body 13. An insertion hole 32 into which the positioning protrusion 30 can be inserted is formed in the installation surface 12a of the vehicle panel 12. When the positioning projection 30 is inserted into the insertion hole 32 by a predetermined amount or more, the positioning projection 30 is configured to be immovable in a direction parallel to the installation surface 12a. For this reason,
When attaching the electric connection box 11 to the vehicle panel 12, the electric connection box 11 can be positioned. Therefore, the screw 25 can be smoothly penetrated through each screw insertion hole 26, and the electric connection box 1
1 can be easily attached.

(2) The positioning projection 30 is provided on the case body 13
The insertion hole 32 is provided in the vehicle panel 12. Therefore, the operation of inserting the positioning protrusion 30 into the insertion hole 32 can be performed while looking at the positioning protrusion 30. Therefore, the positioning projection 30 can be quickly and easily inserted into the insertion hole 32. When the case body is assembled, the positioning projection 30 penetrates the vehicle panel 12. Therefore, it is not necessary to secure a space necessary for penetrating the positioning projection 30 in the case body 13. Therefore, the installation space for the electric components such as the relay provided in the case body 13 is not reduced,
It does not hinder the placement of electrical components.

(3) Locking claws 22 and 23 are formed on the vehicle panel 12 to hold the case body 13 in a positioned state. For this reason, the case main body 13 does not drop off or tilt from the vehicle panel 12 before the nut 27 is tightened to the screw 25. Therefore, the screw insertion hole 26
The screw 25 can be prevented from coming out of the nut, and the nut 27 can be easily tightened.

(4) The positioning projection 30 has a plurality of ribs 31 on its outer peripheral surface. And the positioning projection 3
By inserting 0 into the insertion hole 32 by a predetermined amount or more, the distal end surface of each rib 31 comes into contact with the inner peripheral surface of the insertion hole 32. Therefore, the case main body 13 can be reliably positioned despite the simple configuration.

(5) An inclined surface 31a is provided on the rear end surface of the rib 31.
Are formed. Therefore, when the positioning protrusion 30 is inserted into the insertion hole 32, the positioning protrusion 30 is guided to a predetermined position by the inclined surface 31a. Therefore, the positioning projection 30 can be smoothly and quickly inserted into the insertion hole 32.

The embodiment of the present invention may be modified as follows. In the above embodiment, the positioning protrusion 30 is provided on the case body 13 and the insertion hole 32 is provided on the vehicle panel 12. Alternatively, the positional relationship between the members 30 and 32 may be reversed. That is, the case body 13 may be provided with the insertion hole 32 and the vehicle panel 12 may be provided with the positioning projection 30.

In the above embodiment, the positioning protrusion 30
Although only one is provided, the number is not limited thereto, and two or more may be provided. In the above embodiment, the positioning protrusion 30 is provided at the upper end of the rear surface of the case main body 13, but may be provided at a position other than this. For example, it is possible to provide the positioning projection 30 at the lower end of the rear surface of the case body 13 or at the center of the rear surface.

As in the above embodiment, the locking claws 22,
23 may be provided on the vehicle panel 12, for example, instead of being provided on the insertion projection 18. -In the said embodiment, the length of the positioning protrusion 30 was made longer than the length of the screw 25. Alternatively, the length of the positioning protrusion 30 may be set to be substantially the same as the length of the screw 25. That is, the case body 13 of the positioning projection 30
And the amount of protrusion of each screw 25 from the rear surface of the case body 13 may be set to be substantially the same.

In the above embodiment, the number of the ribs 31 is 4
However, the number may be changed to two, three, five or more. Next, in addition to the technical ideas described in the claims, technical ideas grasped by the above-described embodiments are listed below together with their effects.

(1) The electrical junction box according to any one of claims 1 to 3, wherein the positioning projection has a tapered shape. According to this configuration, the positioning projection can be easily inserted into the insertion portion.

(2) The electric connection box, wherein the positioning protrusion is formed in a conical shape, and the insertion portion is a hole through which the positioning protrusion penetrates. According to this configuration, the positioning projection can be easily inserted into the insertion portion.

(3) The electric junction box according to any one of claims 1 to 3, (1) and (2), wherein the positioning projection is disposed at an upper end of a rear surface of the case body. (4) The electrical junction box according to any one of claims 1 to 3, (1), and (2), wherein the positioning portion is disposed at the center of the upper end of the rear surface of the case body.

(5) In any one of claims 1 to 3 and (1) to (4), the positioning projection has a plurality of ribs on an outer peripheral surface thereof, and the positioning projection is provided on an insertion portion by a predetermined amount. An electric connection box in which the distal end surface of the rib comes into contact with the inner peripheral surface of the insertion portion by inserting the rib. According to this configuration, the case main body can be reliably positioned.

(6) In any one of claims 3, (1) to (5), the holding means includes a plurality of locking claws projecting from a rear surface of the case body, and the holding means is formed on the vehicle body. An electric connection box comprising an engagement hole with which each locking claw is engaged. According to this configuration, it is possible to reliably prevent the case body from falling off or leaning from the vehicle body, despite the simple configuration.

(7) The electric connection box according to any one of claims 1 to 3, and (1) to (6), wherein the positioning projection is longer than the screw. According to this configuration, the case main body can be positioned before the screw is inserted into the screw insertion hole.

(8) In any one of claims 1 to 3 and (1) to (6), an amount of the positioning projection projecting from a rear surface of the case body is an amount of projection of the screw from a rear surface of the case body. Is set to be larger than
According to this configuration, before inserting the screw into the screw insertion hole,
The case body can be positioned.

[0037]

As described in detail above, according to the first aspect of the present invention, the case body can be easily attached to the installation surface of the vehicle body.

According to the second aspect of the present invention, the positioning projection can be quickly and easily inserted into the insertion portion.
According to the third aspect of the present invention, since the case main body is held at the position where the case body is positioned by the holding means, the screw is reliably prevented from coming out of each screw insertion hole before the nut is tightened to the screw. be able to.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a vehicle panel and an electric connection box according to an embodiment.

FIG. 2 is a perspective view showing a state in which an electric connection box is assembled to a vehicle panel.

FIG. 3 is an enlarged sectional view showing a state where a positioning projection is inserted into an insertion hole.

FIG. 4 is an enlarged front view showing a state where a positioning projection is inserted into an insertion hole.

FIG. 5 is a partially exploded perspective view showing a locking claw and a vehicle panel separated from each other.

FIG. 6 is a partial perspective view showing a state in which a locking claw is locked in a through hole of a vehicle panel.

7A and 7B show a prior art, wherein FIG. 7A is an exploded perspective view of an electric junction box, and FIG. 7B is a side view of the electric junction box.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 12 ... Vehicle panel (vehicle body), 12a ... Installation surface, 13 ... Case main body, 19 ... Through-hole (holding means), 22, 23 ... Locking claw (holding means), 25 ... Screw, 26 ... Screw insertion hole, 27
…nut.

Claims (3)

[Claims] 1. A plurality of screw insertion holes provided on an installation surface of a vehicle body, and screws protruding from a rear surface of a case body are respectively passed through the screws, and nuts are tightened on the screws, so that the screws are vertically installed on the installation surface. In the electric junction box to be attached, a positioning protrusion is provided on one of the vehicle body and the case main body, and an insertion portion capable of inserting the positioning protrusion is provided on the other, and the positioning protrusion is provided in the insertion portion by a predetermined amount. An electric junction box, wherein the positioning projection is immovable in a direction parallel to the installation surface when inserted. 2. The electric connection box according to claim 1, wherein the positioning projection is provided on the case main body, and the insertion portion is provided on the vehicle body. 3. The electric connection box according to claim 1, wherein holding means for holding the case main body in a state where the case main body is positioned on the vehicle body is provided.