JP2940495B2 - Electrical component box assembly - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical component box assembly used for, for example, an air conditioner or an electric machine.

[0002]

2. Description of the Related Art Conventionally, an electrical component box assembly includes an electrical component box including a box body and a lid, and a printed circuit board housed in the electrical component box and mounted with electrical components such as transistors, diodes, and connectors. There is something consisting of The electrical component box of the electrical component box assembly insulates the printed circuit board and the electrical components, and plays a role of shielding a flame so that a fire does not reach an external device when the electrical components are ignited.
Further, the electrical component box assembly protects the printed circuit board and the electrical components from impact by the electrical component box during transportation, and thus has the effect of reducing the number of packaging materials.

[0003]

By the way, the above-mentioned conventional electrical component box assembly has been incorporated in an air conditioner as follows, for example. That is, once the lid is removed from the box main body, the wiring of the fan motor and the swing motor is connected to the connector on the printed circuit board, and then the lid is attached to the box main body again.

As described above, when the above-mentioned conventional electrical component box assembly is incorporated into an air conditioner or the like, wiring must be performed after the lid is once removed from the box main body, so that the number of wiring steps is increased. There was a problem.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electrical component box assembly capable of performing connector wiring work without removing a lid from the box body.

[0006]

To achieve the above object, an electric component box assembly according to the first aspect of the present invention comprises an electric component box including a box body and a lid detachably attached to the box body. In the electrical component box assembly including the electrical component box and a printed circuit board on which the electrical component is mounted, the box body has an open front surface, and has a hole in an upper surface portion, and the lid has A front portion having an opening and covering the front surface of the box body; a connector attached to the printed circuit board facing the opening; the lid covering a hole in an upper surface portion of the box body and an opening; It is characterized by having an upper surface part having no.

According to the electrical component box assembly of the first aspect of the present invention, an opening is provided on the front surface of the lid, and the connector attached to the printed board faces this opening. Therefore, wiring work from the outside to the connector can be performed through the opening in the front part of the lid without removing the lid from the box body. Therefore, the number of wiring operations is reduced.

Further, even if the electric component in the electric component box ignites, the flame rises upward, so that it is difficult for the flame to come out from the opening provided in the front part of the lid. Therefore, this electrical component box assembly has a sufficient function of blocking the flame from the outside when fire occurs.

Further, according to the electric component box assembly, the upper surface of the box body without the opening covers the hole of the upper surface of the box body. Therefore, even if fire occurs in the electrical component box assembly and the flame rises upward, the flame can be completely blocked from the outside by the upper surface of the lid.

According to a second aspect of the present invention, there is provided the electrical component box assembly according to the first aspect.
The lid includes at least a part of the lower surface of the box body and has a lower surface having an opening, and a connector attached to the printed circuit board faces the opening.

According to the electrical component box assembly of the second aspect of the present invention, wiring work from the outside to the connector can be performed through the opening in the lower surface of the lid without removing the lid from the box body. Therefore, the man-hour for wiring work can be reduced. Further, in addition to the connector facing the opening at the front portion of the lid, the connector has the connector facing the opening at the lower portion of the lid, so that the number of connectors that can be connected from the outside without removing the lid can be increased.

Moreover, even if the electric component is ignited, the flame rises upward, so that the flame does not leak out from the opening formed in the lower surface of the lid. Therefore, even if the number of openings and connectors is increased, safety is not impaired.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

FIG. 1 is a front view showing a state in which an electric component box assembly 1 according to one embodiment of the present invention is incorporated in an indoor unit of an air conditioner.

The electric component box assembly 1 is fixed to the bottom frame 2. The electric component box assembly 1 includes a fan motor 5 for driving a fan rotor (not shown) disposed behind the heat exchanger 3. The wiring extends to a swing motor 7 for driving the horizontal flap 6 and the like.

As shown in FIGS. 2 and 3, the electrical component box 10 of the electrical component box assembly 1 includes a box body 11 and a lid 12. As shown in FIG. 3, the box body 11 has an open front surface, a wide left side portion, a narrow right side portion, and small holes 26 and 29 in the top portion 21. You are. On the other hand, as shown in FIGS. 2 and 3, the lid 12 has a front portion 22, an upper portion 23, a side portion 24, and a lower portion 2.
5 and is detachably attached to the box body 11 by the engaging portions 27 and 28. Upper surface 23 of lid 12
Has no opening, and covers the upper surface of the box body 11 so as to block the flame that has passed through the hole 26 in the upper surface 21 of the box body 11. The front part 22 of the lid 12 is shown in FIG.
As shown in FIG. 3, an opening 31 is provided.

On the other hand, as shown in FIG.
The reference numerals 4 and 15 are attached to the inside of the box main body 11 so as to be substantially parallel to the side surface of the box main body 11 and vertically. Although not shown, electrical components such as transistors, diodes, and capacitors are mounted on the printed boards 14 and 15.

Further, as shown in FIG. 3, a connection pin or a connection hole (not shown) is formed at the front end of the upper printed circuit board 14 to extend forward in parallel with the surface of the printed circuit board 14. The horizontal connector 32 is fixed. The horizontal connector 32 faces the opening 31 of the front portion 22 of the lid 12 in a state where the printed circuit board 14 is attached to the box main body 11, and as shown in FIG. The connection can be made through the opening 31 of 22.

The lower printed circuit board 15 is provided with a protruding end 15a which protrudes downward.
The horizontal connector 36 is fixed to a. This horizontal connector 3
In 6, connection pins or connection holes (not shown) extend downward parallel to the surface of the printed circuit board 15. The horizontal connector 36 faces the slit-shaped opening 35 of the lower surface 25 of the lid 12 shown in FIG. 4 in a state where the printed circuit board 15 is attached to the box main body 11, and connects the connectors 37 and 38 to the corresponding horizontal connector. 36 through the opening 35 of the lower surface 25. In addition, the protruding end 1
A part of 5 a protrudes slightly from the opening 35 of the lower surface 25.

According to the electrical component box assembly having the above structure, the horizontal connector 32 fixed to the printed circuit board 14 faces the opening 31 of the front surface 22 of the lid 12, and the printed circuit board 32 faces the opening 35 of the lower surface 25. 15, the opening portion 31 of the front portion 22 and the lower portion 2 can be removed without removing the lid 12 from the box body 11.
5 through the opening 35, the connectors 33, 37,
38 can be connected to the lateral connectors 32,36.
Therefore, the man-hour for wiring work of the electrical component box assembly 1 can be reduced.

The opening 3 in the front surface 22 of the lid 12
In addition to 1, the openings 35 of the lower surface 25 are provided, and the horizontal connectors 32, 36 face the openings 31, 35, so that compared to the case where the opening 31 is provided only in the front surface 22. , Horizontal connector 3 that can be connected without removing cover 12
The number of 2,36 can be increased. This also means that even if the printed circuit boards 14 and 15 are provided substantially parallel to the side surface of the box body 11 and many lateral connectors 32 and 36 are provided at the ends of the printed circuit boards 14 and 15,
2 and 36 can be connected through the openings 31 and 35 without removing the lid 12.

The printed boards 14 and 15 are disposed substantially parallel to the side surface of the box body 11, and the horizontal connectors 32 and 36 are fixed to the ends of the printed boards 14 and 15 and have connection pins or connection pins. Connection hole is printed circuit board 14,1
5 extending forward or downward parallel to the direction of the plane. Therefore, when the connectors 32, 33, 36, 37, 38 are connected to each other, the work is performed not in the direction perpendicular to the surface of the printed circuit boards 14, 15 but in the direction along the surface of the printed circuit boards 14, 15. , 37, 38 need not enter the openings 31, 35. Therefore, the openings 31 and 35 need only be as large as the size of the connectors 32, 33, 36, 37 and 38. The openings 31 and 35 do not impair insulation, nor does the flame leak out to the outside even if the electrical components ignite.

Further, since a force is applied not in a direction perpendicular to the surfaces of the printed boards 14 and 15 but in a direction along the surfaces of the printed boards 14 and 15, the printed boards 14 and 15 are not bent and the connectors 32 and 33 are not bent. , 36, 37, 38 can be easily connected, and the printed wiring of the printed circuit boards 14, 15 is not broken.

The openings 31 and 35 are provided on the front surface 22 and the lower surface 25 of the lid 12, respectively.
, The electrical components inside the electrical component box 10 are ignited, and even if the flame rises upward, the opening 3
Flame hardly comes out from 1,35, and safety can be ensured.

Since the upper surface 23 of the lid 12 has no opening and completely covers the hole 26 in the upper surface of the box body 11, even if a flame rises inside the electrical component box 10, The rising flame can be shielded from the outside. Therefore, the hole 26 is formed in the upper surface 21 of the box body 11.
Even if the door is opened, safety can be ensured.

In the above-described embodiment, the openings 31 and 35 are provided on the front surface 22 and the lower surface 25 of the cover 12,
Only two may be provided.

In the above embodiment, the printed circuit boards 14 and 15 are provided in parallel with the side surface of the box body 11, but are provided at right angles to the side surface, that is, in parallel with the front surface, so that connection pins or connection holes are provided. May use a vertical connector extending in a direction perpendicular to the printed circuit board. In this case, when opening the openings 31 and 35 as a working space for connecting the vertical connector, it is necessary to secure insulation and to back up the printed circuit board so that the printed circuit board is not bent.

In the above embodiment, the front portion 22 of the lid 12
And an opening 31 for a connector in the lower surface 25, respectively.
35 are provided one by one, but the front part 22 or the lower part 25
May be provided with a plurality of openings for connectors.

[0029]

As apparent from the above description, the electrical component box assembly according to the first aspect of the present invention has an opening in the front of the lid, and the connector attached to the printed circuit board faces the opening. Therefore, the wiring work from the outside to the connector can be performed through the opening in the front part of the lid without removing the lid from the box body. Therefore, the man-hour for wiring work can be reduced.

Further, even if the electric component in the electric component box ignites, the flame rises upward, so that it is difficult for the flame to come out of the opening provided in the front part of the lid. Therefore, this electrical component box assembly has a sufficient function of blocking the flame from the outside at the time of ignition, even if an opening is provided in the front part of the lid.

Further, in the electrical component box assembly, since the upper surface without the opening of the lid covers the hole on the upper surface of the box main body, the electric component box is ignited in the electrical component box assembly.
Even if the flame rises upward, the upper surface of the lid can completely block the flame from the outside.

According to a second aspect of the present invention, there is provided the electrical component box assembly according to the first aspect.
The box body is provided with a lower surface portion that covers at least a part of the lower surface of the box body and has an opening, and the connector attached to the printed circuit board faces the opening, so that the cover is not removed from the box body, The wiring work from the outside to the connector can be performed through the opening in the lower surface of the connector. Therefore, the man-hour for wiring work can be reduced. Also,
In addition to the connector facing the opening in the front part of the lid, the connector facing the opening in the lower part of the lid is provided, so that the number of connectors that can be connected from outside without removing the lid can be increased.

In addition, even if the electric component is ignited, the flame rises upward, so that the flame does not leak out from the opening provided on the lower surface of the lid. Therefore, even if the number of openings and connectors is increased, safety is not impaired.

[Brief description of the drawings]

FIG. 1 is a front view showing a state in which an electrical component box assembly according to an embodiment of the present invention is incorporated in an indoor unit of an air conditioner.

FIG. 2 is a side view of the electrical component box assembly according to the embodiment.

FIG. 3 is an exploded perspective view of the electrical component box assembly according to the embodiment.

FIG. 4 is a perspective view of the electrical component box assembly shown in FIGS.

[Explanation of symbols]

1: electric component box assembly, 10: electric component box, 11
... box body, 12 ... lid, 22 ... front part, 23 ... upper part, 25 ... lower part, 31, 35 ... opening, 32,3
3, 36, 37, 38 ... connectors.

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-164159 (JP, A) JP-A-7-45328 (JP, A) JP-A-6-77089 (JP, U) (58) Field (Int.Cl. ⁶ , DB name) H05K 5/00 F25B 49/02 560

Claims (2)

(57) [Claims] An electric component box (10) comprising a box body (11) and a lid (12) removably attached to the box body (11), and are arranged in the electric component box (10). Printed circuit boards (14, 15) with electrical components
In the electrical component box assembly provided with the above, the box body (11) has an open front surface, and has holes (26, 29) in the upper surface portion (21), and the lid (12) has a box body. A front portion (22) that covers the front surface of (11) and has an opening (31); a connector (32) attached to the printed circuit board (14) faces the opening (31); The electrical component box assembly, wherein the lid (12) covers the holes (26, 29) of the upper surface (21) of the box body (11) and has an upper surface (23) having no opening. . 2. The electrical component box assembly according to claim 1, wherein the lid covers at least a part of the lower surface of the box body and has an opening portion. An electrical component box assembly, characterized in that a connector (36) attached to the printed board (15) faces the opening (35).