JPH11289636A - Mounting structure of electrical joint box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure of an electrical joint box which obviates screws and nuts for mounting the box which thus reduces the number of item parts and facilitates installation work in a short time. SOLUTION: A body 11 of a case with electrical components 13 housed therein is mounted on an object 14 on which the case body 11 is to be mounted, via a first mounting portion 15 and a second mounting portion 16. The first mounting portion 15 comprises a rectangular hook hole 17 in the object 14 and a long hook projection 18, which is formed on the outer face of the case body 11 via a neck portion 19. When the hook projection 18 is inserted into the hole 17, the case body 11 is turned to an insertion position. When the case body 11 is turned to a mounting position, the projection 18 is engaged with the hole 17, so that the projection 18 does not come off. The second mounting portion 16 comprises a receiving member 21 on the object 14 side, and an inserting member 22, which is formed on the outer face of the case body 11 and inserted into and engaged with the receiving member 21 when the case body 11, is turned to the mounting position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric connection box mounting structure for mounting an electric connection box containing electrical components such as relays on an object to be mounted such as a vehicle body in an automobile or the like.

[0002]

2. Description of the Related Art As a conventional mounting structure for an electric junction box of this type, for example, a configuration as shown in FIG. 8 is known.
That is, in this conventional configuration, a plurality of electrical components 32
The case body 31 housing the first mounting portion 33 and the second
It is configured to be attached to an attached body 35 such as a vehicle body via an attaching portion 34.

In the first mounting portion 33, an object 35 to be mounted is provided.
A mounting plate 36 is disposed on the side, and a mounting seat 37 protrudes from the outer surface of the case body 31 so as to correspond to the mounting plate 36. In the second mounting portion 34, a member 38 to be inserted is provided on the side of the body 35 to be mounted, and the outer surface of the case body 31 is provided on the outer surface of the case body 31 so as to correspond to the member 38 to be inserted.
An insertion member 39 including two inner engagement plates 39a and a pair of outer engagement plates 39b is formed.

When the case body 31 containing the electrical components 32 is mounted on the mounting member 35, the insertion member 38 is inserted into the insertion member 39 of the second mounting portion 34 and the first mounting portion 33 The mounting seat 37 is brought into contact with the mounting plate 36. In this state, the screw 40 is inserted from the mounting seat 37 into the mounting plate 36 and tightened with the nut 41 so that the case main body 31 is fixed to the mounted body 35.

[0005]

However, in this conventional structure for mounting an electric junction box, the first mounting portion 33 is composed of a mounting plate 36 and a mounting seat 37, and the mounting seat 37 is mounted on the mounting plate 36. In the abutted state, they are fastened and fixed by screws 40 and nuts 41. For this reason, when attaching the electric connection box, the screws 40 and the nuts 41 are required, so that the number of parts is increased, and the attaching work is troublesome and time-consuming.

The present invention has been made by paying attention to such problems existing in the conventional technology. An object of the present invention is to provide a mounting structure for an electrical junction box that does not require screws and nuts when mounting the electrical junction box, can reduce the number of parts, and can perform the installation work easily and in a short time. Is to provide.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, a case body accommodating an electric component is mounted via a first mounting portion and a second mounting portion. In the mounting structure for an electric junction box configured to be mounted on a body, the first mounting portion is formed through a rectangular engagement hole formed in the mounted body and an outer surface of the case body via a neck portion, While the main body is rotated to the insertion position, it is inserted into the engagement hole, and the case main body is rotated to the mounting position, and the elongated engagement protrusion is retained and locked in the engagement hole while being rotated. The second mounting portion is formed on an outer surface of a case body and a plug-in member provided on the mounting body side, and when the case body is turned to the mounting position, the second mounting portion is inserted into the plug-in member. And an insertion member to be stopped.

According to a second aspect of the present invention, in the electrical junction box mounting structure according to the first aspect, an engaging protrusion with respect to an engaging hole is provided on a distal end side peripheral surface of the engaging protrusion in the first mounting portion. Is formed with an insertion guide surface for guiding the insertion of the sheet.

According to a third aspect of the present invention, in the electrical junction box mounting structure according to the first or second aspect, the first mounting portion has an engagement protrusion on a base end side peripheral surface. A rotation guide surface for guiding rotation after the insertion of the engagement protrusion into the hole is formed.

According to a fourth aspect of the present invention, in the electrical junction box mounting structure according to any one of the first to third aspects, an outer periphery of a neck portion of the first mounting portion is provided with an engaging hole. A rotation permitting surface for facilitating the rotation of the neck is formed.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) A first embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, the case body 11 of the electric connection box is formed in a boxed bottom shape with an open upper surface made of synthetic resin, and a lid (not shown) is detachably attached to the upper surface opening. A plurality of connecting parts 12 are arranged inside the case main body 11, and electrical components 13 such as relays are connected to these connecting parts 12.

A first mounting portion 15 and a second mounting portion 16 are provided between the case main body 11 and a mounted body 14 such as a vehicle body. Then, the case body 11 is attached to the attached body 14 via the first attachment portion 15 and the second attachment portion 16.

Therefore, the first mounting portion 15 will be described in detail. As shown in FIGS. 1 to 3, the mounting body 14 is formed with an elongated rectangular engaging hole 17 extending in the lateral direction.
A long engagement protrusion 18 extending in the vertical direction is formed on the outer surface of the case body 11 so as to correspond to the engagement hole 17.
Is formed through.

Then, as shown in FIG.
1 is rotated to the insertion position P1,
8 is inserted into the engagement hole 17. Further, as shown by a chain line in FIG.
Is rotated to the mounting position P2.
8 is retained and locked to the outer surface of the opening of the engagement hole 17, whereby the case body 11 is locked and fixed to the mounted body 14 via the first mounting portion 15.

A pair of inclined insertion guide surfaces 18a for guiding the insertion of the engagement projections 18 into the engagement holes 17 are formed on the distal end side peripheral surface of the engagement projections 18. On both sides of the base end side peripheral surface of the engagement protrusion 18, an arc-shaped rotation guide surface 18 b for guiding rotation after the insertion of the engagement protrusion 18 into the engagement hole 17 is formed, respectively. I have. Note that these rotation guide surfaces 18b are formed at opposite corners on both sides of the engagement protrusion 18 so as to be located on the front side in the rotation direction of the engagement protrusion 18.

Steps 20 are formed on both sides of the center of the neck 19, and when the engaging projection 18 is inserted into the engaging hole 17, the step 20 engages with the opening edge of the engaging hole 17. Thus, the insertion depth of the engagement projection 18 is regulated. An arc-shaped rotation permitting surface 19 a for facilitating the rotation of the neck 19 in the engagement hole 17 is formed on the opposite edge of the outer periphery of the neck 19 on the distal end side of the stepped portion 20.

Next, the second mounting portion 16 will be described in detail. As shown in FIGS. 1 and 2, a member 21 to be inserted is provided on the body 14 to be mounted, and engagement pieces 21a are provided on both sides thereof.
And a locking hole 21b is formed in the center. An insertion member 22 is formed on the outer surface of the case main body 11 so as to correspond to the insertion target member 21. When the case main body 11 is rotated from the insertion position P1 to the attachment position P2, the insertion member 22 is engaged with the insertion target member 21. It has been stopped.

That is, the insertion member 22 has one inner engagement plate 23 which can be engaged with the inner surface of the insertion member 21.
And a pair of outer engagement plates 24 that can be engaged with the outer surfaces of both engagement pieces 21a of the inserted member 21. Further, on the central outer surface of the inner engaging plate 23, the inserted member 21 is provided.
A locking projection 23a engageable with the locking hole 21b is formed.

Then, as shown in FIG.
At the time of rotation of the first member 1 to the mounting position P2, the respective engagement plates 23, 24 of the insertion member 22 are inserted into and engaged with both the inner and outer surfaces of the insertion member 21, and the locking projection 23a is engaged with the locking hole 21b. Is done. Thus, the case main body 11 is locked and fixed to the mounted body 14 via the second mounting portion 16.

Next, a method of mounting the electric junction box configured as described above will be described. When the electric junction box is mounted on the body 14 such as a vehicle body, as shown in FIG. 4, the case main body 11 is rotated by 90 degrees from the normal state and is arranged at the insertion position P1. The engaging projections 18 on 11 are aligned with the engaging holes 17 of the attached body 14. In this state, when the case main body 11 is moved toward the attached body 14 and the engagement protrusion 18 is inserted into the engagement hole 17, the step portions 20 on both sides of the neck portion 19 engage with the opening edges of the engagement hole 17. Thus, the insertion depth of the engagement projection 18 is regulated.

Thereafter, when the case body 11 is rotated from the insertion position P1 shown in FIG. 4 to the mounting position P2 shown by the dashed line in FIG. You. Also, the mounting position P2 of the case body 11
At the time of rotation, the insertion member 22 on the case main body 11 is inserted into the insertion member 21 on the attached body 14 side. Thereby, the case main body 11 is locked and fixed to the mounted body 14 via the first mounting portion 15 and the second mounting portion 16.

The effects that can be expected from the above embodiment will be described below. -In the mounting structure of the electric junction box of this embodiment,
The case body 11 containing the electrical component 13 is attached to the first mounting portion 1.
5 and the second mounting portion 16 so as to be mounted on the mounted body 14. The first mounting portion 15 is formed on the outer surface of the case main body 11 via a neck portion 19 and a rectangular engagement hole 17 formed in the mounted body 14, and the case main body 1 is provided with the first mounting portion 15.
1 is inserted into the engagement hole 17 while being rotated to the insertion position P1, and is elongated and is locked by the engagement hole 17 when the case body 11 is rotated to the mounting position P2. And an engaging projection 18. The second mounting portion 16
An insertion member 21 disposed on the side of the attachment body 14 and an outer surface of the case main body 11, which are inserted and locked by the insertion member 21 when the case main body 11 is turned to the mounting position P <b> 2. And an insertion member 22.

Therefore, when mounting the electric junction box,
No screws and nuts are required, the number of parts can be reduced, and the mounting operation can be performed easily and in a short time. Further, since the screws and nuts are not used, the electric connection box can be easily removed from the mounted body 14 without using a tool when recycling components or separating garbage.

In the mounting structure for an electric junction box according to this embodiment, a guide for guiding the insertion of the engaging protrusion 18 into the engaging hole 17 is provided on the peripheral surface of the first mounting portion 15 on the distal end side of the engaging protrusion 18. An insertion guide surface 18a is formed. Therefore, when the case main body 11 is rotated to the insertion position P1, the engagement protrusion 1
8 can be easily inserted into the engagement hole 17.

In the mounting structure of the electric junction box according to this embodiment, the rotation after the insertion of the engagement projection 18 into the engagement hole 17 on the base end side peripheral surface of the engagement projection 18 in the first attachment portion 15. Is formed on the rotary guide surface 18b. For this reason, after the insertion of the engagement protrusion 18 into the engagement hole 17, the case main body 11 is moved from the insertion position P1 to the attachment position P.
2, the engagement protrusion 18 can be smoothly and rotationally arranged at the retaining position where the engagement protrusion 18 engages with the peripheral edge of the opening of the engagement hole 17 by the guide action of the rotation guide surface 18b.

In the mounting structure for an electric junction box of this embodiment, a rotation permitting surface on the outer periphery of the neck 19 in the first mounting portion 15 for facilitating the rotation of the neck 19 in the engagement hole 17. 19a are formed. For this reason,
When the case body 11 is rotated from the insertion position P1 to the mounting position P2 after the insertion of the engagement protrusion 18 into the engagement hole 17, the engagement between the rotation allowing surface 19a and the inner peripheral surface of the engagement hole 17 The neck portion 19 can be easily rotated and displaced in the engagement hole 17.

(Second Embodiment) Next, a second embodiment of the present invention will be described.
This embodiment will be described focusing on the differences from the first embodiment.

In the second embodiment, as shown in FIG.
8 is formed so as to extend in an inclined state from the upper left side to the lower right side. For this reason, when the case main body 11 is attached to the attached body 14, the case main body 11 is rotated by the inclination angle of the engagement projection 18 with respect to the horizontal plane so that the engagement projection 18 is brought into a position matching the engagement hole 17. It can be arranged to facilitate the mounting operation.

(Third Embodiment) Next, a third embodiment of the present invention will be described.
This embodiment will be described focusing on the differences from the first embodiment.

In the third embodiment, as shown in FIG. 6, an arc-shaped tilt permitting surface 18c is formed at both ends of the base-side peripheral surface of the engaging projection 18. Also,
Also on the step portions 20 on both sides of the neck portion 19, arc-shaped inclined permissive surfaces 20a are formed. For this reason, even if the engagement projection 18 is not completely inserted into the engagement hole 17, the case body 1
1 at the time of rotation to the mounting position P2,
By the engagement between the opening 20a and the opening edge of the engagement hole 17, the engagement protrusion 18 is pivotally disposed at a locking position with respect to the engagement hole 17 while being freely tilted.

(Fourth Embodiment) Next, a fourth embodiment of the present invention will be described.
This embodiment will be described focusing on the differences from the first embodiment.

In the fourth embodiment, as shown in FIG. 7, an arc-shaped rotation guide surface 18b is formed over the entire peripheral surface on the base end side of the engagement projection 18. . Further, on the outer edge of the step portion 20 on both sides of the neck portion 19, an arc-shaped tilting allowance surface 20b is formed. For this reason, the engagement hole 1
Even when the engagement protrusion 18 is not completely inserted into the housing 7, the rotation guide surface 1 is not
The engagement projection 18 is freely tilted by the engagement between the opening 8b and the tilt permission surface 20b and the opening edge of the engagement hole 17, and is pivotally disposed at the locking position with respect to the engagement hole 17.

This embodiment can be embodied with the following modifications. The engagement projection 18 of the first mounting portion 15 is formed to extend in the horizontal direction, and the engagement hole 17 is formed to extend in the vertical direction.

An engagement projection 18 on the first mounting portion 15
Are formed so as to extend in the vertical direction or the horizontal direction.
7 is formed to extend obliquely. The neck portion 19 is formed in a substantially square cross section, and the engagement hole 17 is formed.
The upper surface and the lower surface of the center portion are formed with an arc-shaped rotation permissive surface 19a for facilitating the rotation of the neck portion 19.

The neck 19 is formed to have a substantially circular cross section in order to facilitate the rotation of the neck 19 in the engagement hole 17. -The rotation guide surface 18b on the engagement protrusion 18 in the first embodiment is formed in an inclined shape.

In the third and fourth embodiments, the tilt allowance surfaces 18c on the engagement protrusions 18 and the tilt allowance surfaces 20a, 20b on the step portion 20 are formed in a slope. further,
The technical ideas other than the claims grasped by the above embodiment will be described below together with their effects.

The mounting structure for an electric connection box according to any one of claims 1 to 4, wherein tilting allowance surfaces are formed at both end edges of a base end side peripheral surface of the engagement projection. According to this configuration, even if the engagement protrusion is not completely inserted into the engagement hole,
By the engagement between the tilt allowance surface and the opening edge of the engagement hole, the case main body can be easily rotated from the insertion position to the mounting position, and the mounting operation can be performed more easily.

[0039] A step portion capable of engaging with an opening edge of the engaging hole is formed on both side surfaces of the neck portion, and a tilt allowance surface is formed in the step portion. The mounting structure of the electrical junction box described in.

According to this structure, when the case body is rotated from the insertion position to the mounting position after the insertion of the engagement projection into the engagement hole, the engagement between the tilt permission surface and the opening edge of the engagement hole is performed. In addition, the neck can be more easily rotated and displaced in the engagement hole.

[0041]

The present invention is configured as described above, and has the following effects. According to the first aspect of the present invention, when mounting the electric junction box, screws and nuts are not required, the number of components can be reduced, and the mounting operation can be performed easily and in a short time.

According to the second aspect of the present invention, the engagement protrusion can be easily inserted into the engagement hole by the guide action of the insertion guide surface in a state where the case main body is rotated to the insertion position. .

According to the third aspect of the present invention, when the case main body is turned from the insertion position to the mounting position after the engagement projection is inserted into the engagement hole, the case is engaged by the guide action of the rotation guide surface. The mating projection can be smoothly and rotationally arranged at the retaining position where it engages with the opening periphery of the engagement hole.

According to the fourth aspect of the present invention, when the case body is rotated from the insertion position to the mounting position after the insertion of the engagement protrusion into the engagement hole, the rotation allowable surface and the engagement hole are formed. By engagement with the peripheral surface, the neck portion can be easily rotated and displaced in the engagement hole.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of an electric junction box mounting structure.

FIG. 2 is an enlarged sectional view of a main part showing an attached state of the electric junction box.

FIG. 3 is a partial sectional view taken along line 3-3 in FIG. 2;

FIG. 4 is an exploded perspective view showing a mounting process of the electric connection box.

FIG. 5 is an exemplary front view of an electric junction box according to a second embodiment;

FIG. 6 is a vertical sectional view of a main part of an electric junction box mounting structure according to a third embodiment.

FIG. 7 is a cross-sectional view of a main part of an electric junction box mounting structure according to a third embodiment.

FIG. 8 is an exploded perspective view showing a conventional electric junction box mounting structure.

[Explanation of symbols]

11 ... case body, 13 ... electrical components, 14 ... attached body, 1
5: first mounting portion, 16: second mounting portion, 17: engagement hole, 1
Reference numeral 8: engagement projection, 18a: insertion guide surface, 18b: rotation guide surface, 19: neck, 19a: rotation permission surface, 21: inserted member, 22: insertion member, P1: insertion position, P2: mounting position .

Claims (4)

[Claims] 1. A mounting structure for an electric connection box, wherein a case body accommodating electrical components is mounted on a body to be mounted via a first mounting portion and a second mounting portion, wherein the first mounting portion is provided with a cover. A rectangular engagement hole formed in the mounting body, and a neck formed on the outer surface of the case body through the neck, and the case body is inserted into the engagement hole while being rotated to the insertion position, and the case body is An elongated engagement projection which is retained and locked in the engagement hole in a state of being rotated to the attachment position, wherein the second attachment portion is provided with an insertion member provided on the attachment body side; And an insertion member formed on the outer surface of the case main body and inserted into and locked to the inserted member when the case main body is turned to the mounting position. 2. The electrical connection according to claim 1, wherein an insertion guide surface for guiding insertion of the engagement protrusion into the engagement hole is formed on a peripheral surface of a tip end side of the engagement protrusion in the first mounting portion. Box mounting structure. 3. A rotation guide surface for guiding rotation after insertion of the engagement projection into the engagement hole is formed on a base end side peripheral surface of the engagement projection in the first mounting portion. An installation structure for an electrical junction box according to claim 1 or 2. 4. A rotation permitting surface for facilitating rotation of the neck in the engagement hole is formed on an outer periphery of the neck of the first mounting portion. Mounting structure of the electrical junction box described.