JPH05256470A - Electric part box of air conditioner - Google Patents

Abstract

PURPOSE:To prevent leak or malfunction by holding the distance of a gap between a printed board and the side wall of a body of an electric part box through a protrusion. CONSTITUTION:On an inner wall of a cover 10 covering an opening of a body 3a of an electric part box, on the wall facing a printed board 5, there is provided vertically a third rib 11 in the form of a protrusion for insertion into a gap between the board 5 and the side wall B of the body 3a. The board 5 is held stably by inserting the rib 11 to the point midway in the direction of height and the gap A between the board 5 and the wall B can be maintained. As a result, the board 5 does not easily come off first to third ribs 7, 8, 11 and one side thereof seldom contacts the wall B. Consequently, leak or malfunction of an air conditioner can be prevented effectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner,
In particular, the present invention relates to improvement of an electric component box provided in an indoor unit.

[0002]

2. Description of the Related Art For example, FIG. 3A shows an indoor unit 1 of a separate type air conditioner. Inside the indoor unit 1 from which the front cover 1a has been removed, an electric component box 3 is provided in a space on the side of the heat exchanger 2. The electric component box 3 contains a microcomputer or the like for controlling the air conditioner.

As shown in FIG. 1B, the electric component box 3 has an electric component box main body (hereinafter referred to as "main body") that opens in one direction.
3a) and a cover-3b attached to this opening.
Consists of. The main body 3a with the cover 3b removed
As shown in FIG. 2B, a printed circuit board 5 (hereinafter referred to as “PC board”) that constitutes a microcomputer is housed inside the machine in a standing state.

In order to vertically hold the PC board 5, the inner wall surfaces of the main body 3a facing each other in the vertical direction serve as a pair of guides for guiding and holding the upper and lower edges of the PC board 5, respectively. First and second ribs 7 and 8 having a V-shape are provided so as to project in directions opposite to each other. The first and second ribs 7 and 8 are provided in parallel with the side wall B at a position separated from the side wall (shown by B in the figure) of the main body 3a by a predetermined dimension.

The upper and lower ends of the PC board 5 are engaged with the first and second ribs 7 and 8, respectively.
This main body 3a as shown by the solid arrow (a) along 8
Inserted inside. As a result, the PC plate 5 is erected and held at a predetermined distance from the side wall B.

Next, the cover 3b is attached to the main body 3a as shown by the one-dot chain line arrow (b). The electrical component box 3 assembled in this manner is shown in FIG.
As shown in (a), it is installed in the indoor unit 1. Further, the lead wires and connectors led out from the PC board 5 are respectively connected to predetermined motors and various sensors.

[0007]

By the way, the electric component box 3 has the above-mentioned PC with only the first and second ribs 7 and 8.
Although the plate 5 was held, there is "rattle" between the first and second ribs 7 and 8 and the upper and lower ends of the PC plate 5 for guiding. Therefore, due to the vibration generated during the operation of the indoor unit 1, the PC plate 5 is disengaged from the first and second ribs 7 and 8 and comes into contact with the side wall B of the main body 3a, or the connection connector is disengaged. Then, there was a case where an electric leakage or a malfunction occurred.

The present invention has been made in view of the above circumstances, and provides an air conditioner capable of reliably maintaining a gap between the printed circuit board and the side wall of the electric component box body to effectively prevent leakage and malfunction. It is intended to provide an electric component box.

[0009]

The present invention is an air conditioner.
Installed inside and controlling the inside of this air conditioner
An air conditioner that holds a printed circuit board with child circuits
Electrical parts box book that opens in one direction
The body and the body of this electrical parts box,
Guide both ends of the printed circuit board
Board and the electrical component box body side wall with a specified gap.
And a pair of guides that hold them in parallel
A cover to be attached to the opening of the body and a cover provided on this cover.
And that this cover is mounted on the main body of the electrical component box.
The gap between the printed circuit board and the side wall of the electrical component box body.
Inserted in the side wall of the printed circuit board and electrical component box body
And a protrusion that maintains a gap distance from
It is what

[0010]

According to this structure, the printed circuit board and the side wall of the electric component box body can be maintained with a clearance, and the printed circuit board can be reliably held.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The same components as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted. First, a first embodiment will be described with reference to FIGS. 1 (a) and 1 (b).

Similar to the conventional example, the PC board 5 (printed circuit board) has first and second upper and lower ends as a pair of guide portions provided in the electric component box body 3a of the electronic component box 3'of the present invention. , The second ribs 7 and 8 are engaged, and the main body 3
It is inserted in a. As a result, the PC board 5 shown in FIG.
As shown in (a), the main body 3a is provided in the main body 3a.
Is provided upright with a predetermined gap from the side wall B of the.

On the other hand, a cover 10 which covers the opening of the main body 3a is attached to the main body 3a. On the inner wall surface of the cover 10 facing the PC plate 5, there is provided a third rib as a protruding portion to be inserted into a gap (a portion indicated by A in the figure) between the PC plate 5 and the side wall B of the main body 3a. 11 is projected.
The cover 10 is attached to the main body 3a as shown by an arrow (B) while inserting the third rib 11 into the gap between the PC plate 5 and the side wall B of the main body 3a.

FIG. 1B shows a cross-sectional view taken along the line I-I in FIG. 1A when the cover 10 is mounted on the electric component box 2. The width a of the base end portion of the third rib 11 is formed to be substantially the same as the gap between the side wall B and the PC plate 5, and the width b of the tip end portion is slightly smaller than the width a of the base end portion. It is formed small.

The PC plate 5 is stably held by inserting the third rib 11 in the middle portion in the height direction, and the gap between the PC plate 5 and the side wall B of the main body 3a is maintained. As a result, it is less likely that the ribs will be disengaged from the first to third ribs 7, 8, and 11, or that one surface will come into contact with the side wall B. Next, a second embodiment will be described with reference to FIG.

In the second embodiment, in addition to the third rib 11 on the inner wall surface of the cover 10, the third rib 11 is also provided.
And a fourth rib 12 for sandwiching the PC plate 5 therebetween. With such a configuration, the PC board 5 can be held more reliably as compared with the first embodiment. Next, a third embodiment of the present invention will be described.

In the third embodiment, the third rib 11 is used.
The side surface of the ‘′ opposite to one surface of the PC board 5 is a taper surface (a
> B). This makes it easier to mount the cover 10 on the main body 3a as compared with the first embodiment.

According to these first to third embodiments, the third rib 11 provided on the cover 10 holds the gap between the PC plate 5 and the side wall B of the main body 3a, and PC
The plate 5 is securely held to prevent one surface of the PC plate 5 from coming into contact with the side wall B. With the child, there is an effect that it is possible to reduce occurrence of electric leakage and malfunction in the indoor unit 1 of the air conditioner. It should be noted that the present invention is not limited to the above-mentioned one embodiment, and can be variously modified without changing the gist of the invention.

For example, in the above embodiment, the third,
The fourth ribs 11 and 12 are provided with a length substantially the same as the height of the PC plate 5, but the present invention is not limited to this and may be provided as one or a plurality of short protrusions. The point is that it may be a protrusion that effectively regulates the distance between the PC plate 5 and the main body 3a.

[0020]

As described above, according to the present invention, there is provided an electric component box for an air conditioner, which holds a printed circuit board mounted in an air conditioner and having an electronic circuit for controlling the air conditioner formed therein. An electric component box main body that opens in one direction, and guides both ends of a printed circuit board that is provided in the electric component box main body and that is inserted through the opening, and the printed circuit board and the side wall of the electric component box main body A pair of guide parts that hold a gap in parallel and a cover, which is mounted on the opening of the electric component box body, and which is provided on the cover, and which is mounted on the electric component box body. Thus, the protrusion is inserted into the gap between the printed circuit board and the side wall of the electric component box body, and holds the gap distance between the printed circuit board and the side wall of the electric component box body.

According to this structure, since the gap between the printed circuit board and the side wall of the electric component box body can be maintained and the printed circuit board can be reliably held, it is possible to effectively prevent electric leakage and malfunction of the air conditioner. There is an effect that can be prevented.

[Brief description of drawings]

FIG. 1A is an exploded perspective view showing a first embodiment of the present invention, and FIG. 1B is a transverse sectional view taken along the line I-I.

FIG. 2 (a) is a cross sectional view showing a second embodiment,
(B) is a cross-sectional view showing a third embodiment.

FIG. 3A is a perspective view showing an indoor unit of a general air conditioner, and FIG. 3B is an exploded perspective view showing a conventional example.

[Explanation of symbols]

3 '... Electric component box, 3a ... Electric component box body, 5 ... Printed circuit board, 7 ... First rib (guide portion), 8 ... Second rib (guide portion), 10 ... Cover, 11 ... Third Ribs (projections), A ... gap, B ... side wall.

Claims (1)

[Claims] 1. An electric component box of an air conditioner, which is mounted in the air conditioner and holds a printed circuit board in which an electronic circuit for controlling the air conditioner is formed, wherein the electric component box body is open in one direction. And a pair that is provided inside the electric component box body and guides both ends of a printed circuit board that is inserted through the opening, and that holds the printed circuit board parallel to the side wall of the electric component box body with a predetermined gap. Guide part, a cover mounted on the opening of the electric component box body, and the cover provided on the cover and mounted on the electric component box body, thereby the printed circuit board and the electric component. An electric component box for an air conditioner, comprising: a protrusion inserted into a gap between the side wall of the box body and holding a gap distance between the printed circuit board and the side wall of the electric component box body.