JP2001231128A - Electrical junction box - Google Patents

Abstract

(57) [Problem] To provide an electric connection box that can be attached without a part case without rattling and can be smoothly attached and detached. The electric connection box includes a front case having a mounting portion for mounting a fuse, and a component case. The component case 8 is detachable from the front case. The component case 8 covers the mounting portion and the fuse when attached to the front case. The component case 8 includes a ceiling wall 18, a first peripheral wall 19, a second peripheral wall 20, and a rigidity reducing portion 35. Peripheral wall 18,
19 is connected to the ceiling wall 18. The edge 19a of the first peripheral wall 19 is provided with a through hole 32 in which the projection of the front case is locked. The rigidity reducing portion 35 is provided on the second peripheral wall 20. The rigidity lowering portion 35 includes a notch 36 formed by cutting the second peripheral wall 20 from the edge 20 a of the second peripheral wall 20 toward the ceiling wall 18. The notch 36 reduces the rigidity of the component case 8.

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 mounted on an automobile or the like as a moving body.

[0002]

2. Description of the Related Art In general, a vehicle as a moving body is equipped with various kinds of electronic devices such as lamps such as a head lamp and a tail lamp, and motors such as a starter motor and a motor for an air conditioner. .

[0003] In order to supply power to the various electronic devices described above, the automobile has been provided with junction blocks at appropriate locations. The junction block is configured by laminating wiring boards provided with a printed circuit board, a bus bar, and the like, and integrating various electric circuit units such as a large number of fuses and relays on these wiring boards.

[0004] Since the junction block may include a fuse, a relay, a bus bar, or the like, the junction block is also called a fuse block, a relay box, or an electric connection box. In the present specification, the above-described fuse block, relay box, and junction block are hereinafter collectively referred to as an electric connection box. FIG. 6 is an enlarged view of a part of an electric connection box 101 as an example of this kind.

[0005] An electrical junction box 101 partially shown in FIG.
Includes a case 102, the above-described electric circuit unit housed in the case 102, a fixing portion, and a component case 108. The case 102 includes a back case,
And a front case 111.

[0006] The back case has a flat bottom wall and a peripheral wall connected to the peripheral edge of the bottom wall. A plurality of connectors are provided on the bottom wall. The front case 111 is formed in a flat plate shape. The front case 111 is accommodated in the back case with a gap from the bottom wall. Table case 111
Has a plurality of mounting portions 117.

The mounting portions 117 are provided on the outer surface 111a of the front case 111, respectively. Mounting part 11
7, electrical components such as fuses, connectors, and fusible links can be attached to the respective components. A fuse 125 as an example of an electric component can be mounted on the mounting portion 117 shown in FIG. Mounting part 117
Has a plurality of walls 129 protruding from the outer surface 111a.

The wiring board is made up of the bottom wall of the back case and the front case 11.
1 and housed in the back case. The fixing part is formed integrally with the back case. The fixing part attaches the back case, that is, the electric connection box 101 to a body panel of an automobile as a moving body.

The component case 108 is detachable from the front case 111. When the component case 108 is attached to the front case 111,
At the same time, the mounting part 117 and the fuse 125 are covered.

When the component case 108 is attached to the front case 111, the component case 108 has a flat flat wall 118 facing the outer surface 111a, a peripheral wall 119 connected to the periphery of the flat wall 118, and a pair of locking projections 132. , Operation unit 133
And The peripheral wall 119 is a part case 108.
When attached to the front case 111, it faces the wall 129 and covers the wall 129 from outside.

Each of the locking projections 132 has a peripheral wall 119.
Among the peripheral walls 119 facing each other. The locking projections 132 are respectively provided on the flat wall 118 of the peripheral wall 119.
The edge 119a is provided at a distance from the edge 119a. Locking projection 1
32 project from the edge portion 119a in a direction approaching each other.

The operation section 133 protrudes outward from the peripheral edge of the flat wall 119. The operation unit 133 is formed in a plate shape along the flat wall 119. Operation unit 133
Project from the periphery of the flat wall 118.

The case 108 for the parts is
1, the plurality of walls 12 of the mounting portion 117
9, a lock receiving protrusion 130 is provided on a wall 129 facing the peripheral wall 119 on which the lock protrusion 132 is provided. The locking projections 132 are locked to the locking receiving projections 130, respectively.

A conventional electric junction box 101 having the above-described configuration.
When the component case 108 is attached to the front case 111, the flat wall 118 is elastically deformed so as to widen the distance between the locking projections 132, so that the locking receiving projections 130
The locking projection 132 is locked. When removing the component case 108 from the front case 111, the operation unit 133 is used.
A force is applied in a direction away from the outer surface 111a to elastically deform the flat wall 118 so as to widen the distance between the locking projections 132.
Release the lock to 0.

[0015]

The parts case 108 of the conventional electric junction box 101 illustrated in FIG.
In the structure for attaching and detaching to and from the component 11, it is conceivable that the component case 108 cannot be attached and detached smoothly as shown below.

For example, when a large number of the mounting portions 117 are arranged in one direction and the component case 108 is formed so as to cover the multiple mounting portions 117 arranged in a row, It is conceivable that the component case 108 cannot be smoothly attached and detached.

In the case where the flat wall 118 is formed in a rectangular shape along the one direction and the locking projection 132 is provided on the peripheral wall 119 facing the one direction, the case 108 for the component is particularly required. It is conceivable that it cannot be removed smoothly. In this case, one of the peripheral walls 119 facing in a direction intersecting the one direction is the flat wall 1.
18 and the peripheral wall 119 on which the locking projection 132 is provided, the rigidity of the component case 108 becomes unnecessarily high.

The flat wall 118 is less likely to be deformed in the direction in which the distance between the locking projections 132 is increased.
It becomes difficult to attach and detach the component case 108 to and from the front case 111 smoothly. For this reason, the locking projection 1
It is conceivable to form a gap between each other, for example, by shaving off a part of the locking receiving projection 130 and the locking receiving projection 130 so as to easily lock each other. However, in this case, the component case 1
08 is attached to the front case 111, there is a gap between the locking projection 132 and the locking receiving projection 130,
The component case 108 will rattle against the front case 111. If the parts case 108 rattles, it may cause a problem such as generation of abnormal noise while the automobile is running, which is not desirable.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an electric connection box that can be attached without looseness to a component case for covering an electric component and can be smoothly attached and detached.

[0020]

According to a first aspect of the present invention, there is provided an electric junction box including a case body having a plurality of mounting portions to which electric components can be mounted. And at least two or more of the mounting portions are arranged side by side in one direction, and are detachable with respect to the case main body and when attached to the case main body, along with the case main body along the one direction. In an electric connection box provided with a component case that covers a mounting portion arranged in parallel, a rigidity that reduces the rigidity of the component case and allows the component case to bend when the component case is attached to and detached from the case body. It is characterized by having a lowering part.

The electric junction box of the present invention according to claim 2 is
The electrical junction box according to claim 1, wherein the component case includes a pair of locking portions extending along the one direction and spaced from each other along the one direction,
The case body includes a pair of locking receiving portions to which the locking portions are locked, and the pair of locking receiving portions sandwiches the mounting portions arranged side by side along the one direction along the one direction. The locking portion and the locking receiving portion are locked to each other, the component case is attached to the case main body, and the rigidity reducing portion is attached to and detached from the case main body. It is characterized in that the component case is allowed to elastically deform so that the pair of locking portions come into contact with and separate from each other.

According to the third aspect of the present invention, there is provided an electric junction box,
3. The electrical junction box according to claim 2, wherein the mounting portions juxtaposed along the one direction are provided on an outer surface of the case body, and the component case is mounted on the case body when the outer surface is attached to the case body. And a pair of first peripheral walls extending along the edge of the wall and extending from the wall toward the outer surface and facing along the one direction,
A pair of second peripheral walls extending along the edge of the wall and extending from the wall toward the outer surface and facing along a direction intersecting the one direction,
The rigidity lowering portion is provided on each of the second peripheral walls, and has a cutout portion in which the second peripheral wall is cut from the edge of each of the second peripheral walls away from the wall toward the wall. Features.

The electric junction box of the present invention according to claim 4 is:
4. The electrical junction box according to claim 3, wherein each of the locking portions is a through hole that penetrates the first peripheral wall, and wherein the locking receiving portion is one of the mounting portions arranged side by side along the one direction. 5. A projection protruding outward from each of the mounting portions located at both ends along the one direction, and an edge of the first peripheral wall separated from the wall when the component case is mounted on the case body. The wall and the outer surface are provided with inclined surfaces that are inclined so that the distance between the wall and the outer surface gradually increases as the distance from the wall increases with respect to the direction in which the wall and the outer surface are opposed to each other.

According to the electrical junction box of the present invention, the rigidity reducing portion reduces the rigidity of the component case and allows the component case to bend when attached to the case body. Can be smoothly attached to and detached from the case body. Further, since the rigidity reduction portion allows the component case to bend, the component case can be attached to and detached from the case body without providing a gap or the like between the component case and the case body. .

According to the electric connection box of the present invention, when the component case is attached to and detached from the case body,
The component case is elastically deformed such that the pair of locking portions come into contact with and separate from each other. As described above, when the locking portion and the locking receiving portion are disengaged from each other, the rigidity reduction portion allows the component case to be elastically deformed, so that the component case can be smoothly attached to and detached from the case body. Can be.

According to the third aspect of the present invention, since the rigidity reducing portion has the notch cut out from the edge of the second peripheral wall of the component case, the locking portion is formed. It is possible to reliably allow the component cases to be elastically deformed so as to be in contact with and separated from each other.

According to the electric junction box of the present invention, the distance between the inclined surface of the locking receiving portion and the wall becomes larger as the wall and the outer surface move away from the wall in the direction in which the wall and the outer surface face each other. It is inclined to spread gradually. Therefore, when the component case is attached to the case body, the component case can be more reliably elastically deformed so that the locking portions are separated from each other.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An electric junction box according to an embodiment of the present invention will be described below with reference to FIGS. The electric connection box 1 is mounted on a vehicle body panel or the like as a moving body and is mounted on the vehicle. As shown in FIG. 1, the electric connection box 1 includes a case 2, an electric circuit unit 4, a fixing unit 6, and a component case 8.

The case 2 includes a back case 10 and a front case 11 as a case body. Back case 10
Is formed in a box shape with a flat bottom wall 12 and a plurality of peripheral walls 13 connected to the peripheral edge of the bottom wall 12.

The bottom wall 12 has a rectangular planar shape. A plurality of connectors 14 are provided on the bottom wall 12. Each terminal of the connector 14 is electrically connected to electric wires connected to various loads such as the above-described lamps and motors and a power supply such as a battery.

The front case 11 is formed in a flat plate shape. The front case 11 is accommodated in the back case 12 with a gap from the bottom wall 12. The front case 11 includes a mounting portion 17a to which a fuse 25 can be mounted and a mounting portion 17b to which a connector (not shown) can be mounted.
, Respectively. The fuse 2
5 and the connector form the electrical components described herein.

The fuse 25 connects a case 26 made of a synthetic resin or the like, a pair of blade-like connection portions 27 each having one end housed in the case 26, and connects the blade-like connection portions 27 in the case 26 to each other. And a fusible body (not shown).

The mounting portions 17a and 17b are respectively provided on the front surface 11a located outside the electric connection box 1 when the front case 11 is accommodated in the back case 12. This surface 11a forms the outer surface described in this specification. Each of the mounting portions 17a has an opening 28 and a plurality of peripheral walls 29, as shown in FIGS.

The opening 28 is a hole opened on the surface 11a. The peripheral wall 29 protrudes from a position located at the edge of the opening 28 on the surface 11a. As described later, the mounting portion 17
Are arranged integrally with each other along a direction intersecting with the direction L in which the are arranged side by side.

The mounting portion 17a is provided with a fuse 25 to be mounted.
As shown in FIG. 1 and the like, a line segment L formed by connecting the center positions of the pair of blade-shaped connection portions 27 to each other is linearly arranged as shown in FIG. . That is, the mounting portions 17a for mounting the fuses 25 among the mounting portions 17a and 17b are arranged side by side along the line segment L. Note that the line segment L forms one direction described in this specification.

The front case 11 is provided with a pair of projections 30 as shown in FIGS. 1, 3 to 5. Protrusion 3
Numerals 0 respectively form the locking receiving portions described in this specification. Each of the protrusions 30 protrudes outward from the peripheral wall 29 of the mounting portion 17a located at both ends along the line segment L. The protrusions 30 project from the mounting portions 17a located at both ends along the line segment L, thereby connecting the plurality of mounting portions 17a arranged side by side along the line segment L to the line segment L.
Are arranged at positions sandwiching each other along.

Each of the projections 30 has an inclined surface 31. The inclined surface 31 is located at a position away from the surface 11a of the projection 30. The inclined surface 31 is the surface 1
The protrusions 30 are inclined with respect to the direction in which the protrusions 30 come into contact with or separate from the surface 11a so that the distance between the protrusions 30 gradually increases as approaching 1a.

When the component case 8 is attached to the front case 10 as described later, the inclined surface 31 is formed so that the distance between the projections 30 gradually increases as the component case 8 moves away from the ceiling wall 18 described later. The ceiling wall 18 and the surface 11a are inclined with respect to directions facing each other.

The electric circuit unit is disposed between the bottom wall 12 of the back case 10 and the front case 11 and housed in the back case 10. The electric circuit unit includes a plurality of insulating substrates 21 stacked on each other along a direction in which the bottom wall 12 and the front case 11 come in contact with and separate from each other, and a plurality of bus bars 22.

Each of the insulating substrates 21 is made of a material such as a synthetic resin having an insulating property. The planar shape of the insulating substrate 21 is formed in a rectangular shape. The bus bars 22 are each made of a material such as a metal having conductivity.

The bus bars 22 are respectively provided on the insulating substrates 2.
A plurality of tab portions 22a penetrating through 1 are provided. A part of the plurality of tab portions 22a is connected to each terminal of the connector 14. A part of the plurality of tabs 22a is
7b and a blade-like connection portion 27 of the fuse 25. The bus bar 22 is connected to the connector 14.
Are connected to each other in accordance with a predetermined pattern with the fuses 25 and connectors mounted on the mounting portions 17a and 17b.

The fixing part 6 is formed integrally with the back case 10. The fixing portion 6 has a through hole 7 through which a bolt or the like can pass. The fixing portion 6 is attached to the body panel or the like by screwing a bolt or the like passing through the through hole 7 into a weld nut or the like attached to the body panel. The fixing part 6 attaches the back case 11, that is, the electric connection box 1, to the body panel.

As shown in FIGS. 2 to 5, the component case 8 includes a flat ceiling wall 18 as a wall,
A pair of first peripheral walls 19 connected to an edge 18a of the ceiling wall 18 and a pair of second peripheral walls 20 connected to an edge 18a of the ceiling wall 18;
It has a pair of through holes 32 as locking portions and an operation portion 33. The component case 8 is detachable from the front case 11.

The ceiling wall 18 has a rectangular planar shape. As for the ceiling wall 18, the case for parts is the front case 11
Is arranged in a state where the longitudinal direction is along the line segment L. As for the ceiling wall 18, the part case 8 is the front case 1.
0, as shown in FIG.
1a with an interval. When the component case 8 is attached to the front case 10, the ceiling wall 18 is substantially parallel to the front surface 11a.

Each first peripheral wall 19 is provided with a ceiling wall 18.
Are connected to the edge portions 18a located at both ends along the longitudinal direction. Each first peripheral wall 19 extends from the ceiling wall 18 toward the surface 11a when the component case 8 is attached to the front case 11. When the component case 8 is attached to the front case 11, the first peripheral wall 19 includes the line segment L.
Along with each other.

Each first peripheral wall 19 is provided with a ceiling wall 18.
Are connected to the edge portions 18b located at both ends along the width direction. Each second peripheral wall 20 is continuous with the ceiling wall 18 and the pair of first peripheral walls 19. Each second peripheral wall 2
0 extends from the ceiling wall 18 toward the surface 11a when the component case 8 is attached to the front case 11. When the component case 8 is attached to the front case 11, the second peripheral walls 20 face each other along a direction intersecting the line segment L.

When the component case 8 is mounted on the front case 10, the peripheral walls 19 and 20 face the peripheral wall 29 of the mounting portion 17a, respectively.

The through holes 32 respectively penetrate the first peripheral wall 19. The through hole 21 is provided on the ceiling wall 1 of the first peripheral wall 19.
8 and edge 19b near ceiling wall 18
Is formed. Each through hole 32
The projection 30 is freely detachable. Each of the through-holes 32 is engaged with and disengaged from the projection 30, so that the component case 8 is detachable from the front case 10.

The first peripheral wall 19 has a second edge 19a at the edge 19a.
An inclined surface 34 is provided. The second inclined surface 34 is the ceiling wall 1
8 and the surface 11a are inclined in a direction in which the distance between the pair of second peripheral walls gradually increases as the distance from the ceiling wall 18 increases, with respect to the direction in which the surface 8a and the surface 11a contact and separate from each other. The second inclined surface 34 is
When the component case 8 is attached to the front case 11,
It contacts the inclined surface 31. That is, when the product case 8 is attached to the front case 11, the edge 19 a comes into contact with the inclined surface 31 of the projection 30. The second inclined surface 34 is along the inclined surface 31 when the component case 8 is attached to the front case 11.

The operation section 33 projects outward along the line L from the edge of the ceiling wall 18. Operation unit 33
Is along the ceiling wall 18. The operation unit 33 includes a pair of first
One of the peripheral walls 19 protrudes outward from the vicinity of the edge 19b of one of the first peripheral walls 19.

When the component case 8 is attached to the front case 10, the edge portions 19a and 20a of the first and second peripheral walls 19 and 20 which are separated from the ceiling wall 18 are located near the surface 11a and the front surface 11a. 11a. The edge 20a of the second peripheral wall 20 is indicated by a two-dot chain line in the figure. When the component case 8 is attached to the front case 10, the ceiling wall 18 and the peripheral walls 19 and 20 cover the mounting portion 17a and the fuse 25 together with the surface 11a.

The component case 8 has a rigidity decreasing portion 35.
It has. The rigidity lowering portions 35 are provided on each of the second peripheral walls 20. The rigidity lowering portion 35 has a cutout portion 36 formed by cutting the second peripheral wall 20 from the edge portion 20a toward the ceiling wall 18. The notch 36 is located between the pair of first peripheral walls 19. The rigidity reduction portion 35 reduces the rigidity of the entire component case 8 by the notch 36 notching the second peripheral wall 20.

The notch 36 extends from the edge 20 a to the ceiling wall 18.
By notching the second peripheral wall 20 toward, the ceiling wall 18 is easily warped in a direction in which the edge portions 19a of the pair of first peripheral walls 19 are separated from each other.

The rigidity reducing portion 35 allows the ceiling wall 18 to warp in a direction in which the edges 19a of the pair of first peripheral walls 19 move away from each other, that is, allow the component case 8 to bend. As described above, the component case 8 is elastically deformed when the ceiling wall 18 is warped. As described above, when the ceiling wall 18 is warped, the component case 8 generates an elastic restoring force so as to return the space between the edge portions 19a. The rigidity reduction portion 35 allows the component case 8 to be elastically deformed such that the edge portions 19a of the pair of first peripheral walls 19 come into contact with and separate from each other.

According to the electric junction box 1 having the above-described configuration, when the component case 8 is mounted on the front case 10, first, the fusing 25 and the connector 2 are mounted on the mounting portions 17a and 17b.
6 and so on. An edge of the peripheral wall 29 of the mounting portion 17a;
Edge portions 19a, 20a of peripheral walls 19, 20 of component case 8
The front case 10 and the component case 8 are arranged in such a manner that the front and rear surfaces face each other.

The front case 11 and the component case 8 are moved closer to each other so that the front surface 11a and the ceiling wall 18 are closer to each other. Then, as shown in FIG.
And the second inclined surface 34 contact each other. Furthermore, surface 1
As the ceiling 1a and the ceiling wall 18 are moved closer to each other, FIG.
As shown in (B), the edge 19a of the first peripheral wall 19 is displaced along the inclined surfaces 31,34.

The edges 19a of the pair of first peripheral walls 19
The ceiling wall 18 warps so as to separate from each other. That is, the component case 8 is elastically deformed such that the edge 18a of the ceiling wall 18 and the edge 19a of the first peripheral wall 19 are displaced along arrows M1 and M2 in the drawing.

The second inclined surface 34 corresponds to the inclined surface 31 of the projection 30.
Over the edge 19a due to the elastic restoring force.
The parts case 8 returns to the initial state so that the interval between them returns to the initial state. At this time, the edges 18a and 19a are moved by the arrow M in the direction opposite to the arrows M1 and M2 by the elastic restoring force.
It is displaced along 1a and M2a. That is, the edge portions 19a are displaced in directions approaching each other, and the component case 8 returns to the initial state. Then, as shown in FIG.
And the projection 30 are locked with each other.

Next, when removing the component case 8 attached to the front case 11, the operation unit 33 is first displaced along the arrow M1 by a hand of a person or the like. Then, the edge 19a of the first peripheral wall 19 located near the operation unit 33 is
Peripheral wall 2 provided with projection 30 engaged with through hole 32
The component case 8 is elastically deformed away from the component case 9.

Then, as shown in FIG. 5A, the engagement of the through hole 32 provided in the one peripheral wall 19 with the projection 30 is released. Then, as shown in FIG. 5 (B), the operation portion 33 is moved away from the front case 11 with the through hole 32 of the other first peripheral wall 19 and the projection 30 locked in the through hole 32 as a fulcrum. Then, it is displaced along the arrow M3 in the figure. Then, the engagement between the through hole 32 of the other first peripheral wall 19 and the projection 30 engaged with the through hole 32 is released, and the component case 8 is removed from the front case 11. As described above, the rigidity reducing portion 35 allows the component case 8 to be elastically deformed so that the through holes 32 come into contact with and separate from each other when the component case 8 is attached to and detached from the front case 11.

According to the present embodiment, the reduced rigidity portion 35 of the component case 8 has the cutout portion 36. Notch 36
The second peripheral wall 20 extends from the edge 20a toward the ceiling wall 18.
Are notched, and the rigidity of the component case 8 is reduced. The notch 36 allows the ceiling wall 18 to warp in a direction in which the edges 19a of the first peripheral wall 19 move away from each other. That is, the notch 36 allows the ceiling case 18 and the like to elastically deform as described above, and allows the component case 8 to bend. The notch 36 allows the component case 8 to be elastically deformed such that the through holes 32 come into contact with and separate from each other.

For this reason, a pair of the through hole 32 and the projection 30 which are locked to each other is formed, and the through hole 32 and the projection 30 of the set are aligned in the direction in which the mounting portions 17a are arranged side by side (line segment L).
4 (A) and FIG. 4 (B), so that the edge portions 19a of the pair of first peripheral walls 19 are separated from each other, as shown in FIGS. 8 is elastically deformed, and the projection 30 is locked in the through hole 32. Therefore,
The component case 8 can be smoothly attached to the front case 11.

Further, when the projection 30 is locked in the through hole 32, the notch 36 reduces the rigidity of the component case 8, and as shown in FIG. The edges 19a approach each other due to the elastic restoring force generated therein, and the component case 8 returns to the initial state. Therefore, when the through hole 32 and the projection 30 are locked with each other, the front case 11 and the component case 8 can be attached without rattling.

Further, since the notch 36 reduces the rigidity of the component case 8, if the operating portion 33 is to be displaced along the arrow M 1, the operating portion 33 is moved from the inside of the through hole 32 of the first peripheral wall 19. The component case 8 is easily elastically deformed so that the projection 30 comes off. Therefore, the component case 8 can be removed from the front case 11 smoothly.

As described above, the rigidity reducing portion 35 allows the component case 8 to be elastically deformed so that the edge portion 19a, that is, the through hole 32 comes into contact with and separates from each other. Since the component case 8 and the front case 11 can be smoothly attached and detached, there is no need to provide a gap or the like between the through hole 32 and the projection 30. Therefore, when the through hole 32 and the projection 30 are locked to each other, the component case 8 and the front case 11 are attached to each other without rattling.

[0066]

As described above, according to the first aspect of the present invention, the rigidity reduction portion allows the component case to bend when the component case is attached to the case body. It can be attached to and detached from the case body smoothly.

Since the rigidity reduction portion allows the component case to bend, a gap or the like is provided between the component case and the case body in order to attach / detach the component case to / from the case body. In addition, the component case can be smoothly attached to and detached from the case body. Therefore, the component case can be attached to the case body without rattling.

According to the second aspect of the present invention, when the locking portion and the locking receiving portion are disengaged from each other, that is, when the component case is attached to and detached from the case main body, the pair of locking portions is formed. The component cases are elastically deformed so as to approach and separate from each other. For this reason,
The component case can be smoothly attached to and detached from the case body. In addition, since the component case is elastically deformed when it is attached to and detached from the case body, the component case can be more securely attached to the case body by the elastic restoring force without rattling.

According to the third aspect of the present invention, since the rigidity reducing portion has the notch formed by cutting out the second peripheral wall,
It is possible to more reliably allow the component case to be elastically deformed so that the locking portions come into contact with and separate from each other. For this reason, the component case can be more smoothly attached to and detached from the case body.

Further, the rigidity reducing portion more reliably allows the component case to be elastically deformed so that the locking portions come into contact with and separate from each other, so that a gap is provided between the locking portion and the locking receiving portion. The component case can be smoothly attached to and detached from the case main body without providing the component. For this reason, the component case can be more securely attached to the case body without rattling.

According to the fourth aspect of the present invention, when the component case is attached to the case body, the edge of the first peripheral wall and the inclined surface of the projection come into contact with each other. The component cases can be more reliably elastically deformed so as to be separated from each other. Therefore, the component case can be more smoothly attached to the case body.

Also, the inclined surface surely elastically deforms the component case so that the pair of locking portions are separated from each other, so that no gap is provided between the locking portion and the locking receiving portion.
The component case can be smoothly attached to and detached from the case body. For this reason, the component case can be more securely attached to the case body without rattling.

[Brief description of the drawings]

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

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a cross-sectional view showing a state where a component case is attached to a front case of the electric junction box shown in FIG. 1;

FIG. 4 is a cross-sectional view showing a process of attaching a component case to a front case of the electric junction box shown in FIG.

FIG. 5 is a cross-sectional view showing a process of removing a component case from a front case of the electric junction box shown in FIG. 1;

FIG. 6 is an enlarged sectional view showing a part of a conventional electric junction box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric connection box 8 Parts case 11 Front case (case main body) 11a Surface a (outer surface) 17a, 17b Mounting part 18 Ceiling wall (wall) 19 First peripheral wall 19a Edge 20 Second peripheral wall 20a Edge 25 Fuse ( Electrical parts) 30 Projection (locking receiving portion) 31 Inclined surface 32 Through hole (locking portion) 35 Rigidity reducing portion 36 Notch portion L Line segment (one direction)

Claims (4)

[Claims] A case body having a plurality of mounting portions to which electric components can be mounted, at least two or more of the mounting portions are arranged side by side in one direction, and are attached to and detached from the case body. Freely and when attached to the case main body, in an electric connection box having a component case covering a mounting portion arranged side by side along the one direction along with the case main body, the rigidity of the component case is reduced. An electric connection box, comprising: a rigidity reducing portion that allows the component case to bend when the component case is attached to and detached from the case main body. 2. The component case includes a pair of locking portions extending along the one direction and spaced apart from each other along the one direction, and the case main bodies are respectively provided with the locking portions. A pair of locking receiving portions for locking the portions, the pair of locking receiving portions being provided at positions respectively sandwiching the mounting portions arranged side by side along the one direction along the one direction. A stop portion and a lock receiving portion are locked to each other to attach the component case to the case main body, and the rigidity lowering portion is configured such that the pair of lock portions are mutually connected when being attached to or detached from the case main body. The component case is allowed to be elastically deformed so as to come and go.
Electrical junction box as described. 3. The mounting portion, which is juxtaposed along the one direction, is provided on an outer surface of the case main body, and the component case, when attached to the case main body, has a wall facing the outer surface. A pair of first peripheral walls extending from the wall toward the outer surface and facing the one surface along the edge, and a pair of first peripheral walls extending from the wall and extending from the wall; A pair of second peripheral walls extending toward the outer surface and facing each other along a direction intersecting the one direction, wherein the rigidity reducing portion is provided on each of the second peripheral walls. The electrical junction box according to claim 2, further comprising a notch formed by cutting the second peripheral wall from an edge of each of the second peripheral walls away from the wall toward the wall. 4. The locking portion is a through hole penetrating through the first peripheral wall, and the locking receiving portion extends along the one direction among the mounting portions arranged side by side in the one direction. Projections that protrude outward from each of the mounting parts located at both ends, and
When the component case is attached to the case body, the first peripheral wall comes into contact with an edge of the first peripheral wall remote from the wall, and the wall and the outer surface of the first peripheral wall move away from the wall in a direction opposite to each other. The electrical junction box according to claim 3, wherein the electrical junction box is provided with an inclined surface that is inclined so that the interval gradually increases.