CN100436952C - Indoor unit of air conditioner - Google Patents

Abstract

The present invention provides one kind of air conditioner possessing electrical box with less electric parts, easy assembling and low assembling cost. The electrical box possesses: one control unit board of synthetic resin for installing the control unit; one connector board with connector terminals, etc; matched claws and fitting parts for temporarily fixing the control unit board and the connector board; and one upper claw and one corresponding claw slot for assembling the control unit board and the connector board to support mutually.

Description

Indoor unit of air conditioner

technical field

The present invention relates to an indoor unit of an air conditioner, and particularly relates to an improvement of an electrical component box arranged in a casing of the indoor unit.

Background technique

An air conditioner, such as a split air conditioner, includes an indoor unit installed indoors and an outdoor unit installed outdoors. Further, refrigerant pipes and electrical wiring are connected to the indoor unit and the outdoor unit. The operation of the air conditioner is usually provided by the operating device, such as a remote controller, using infrared rays to provide instructions to the indoor unit. The control unit installed on the indoor unit receives the infrared instruction signal and controls the components of the refrigeration cycle such as the blower and compressor.

The control unit, which controls components of the refrigeration cycle such as a blower and a compressor, is usually housed in an electrical component box and installed in an indoor cabinet.

Such a control unit is housed in an electrical component box and a prior art example of installing it in an indoor cabinet is disclosed in Japanese Patent No. 3154923, for example. In this prior art example, the board on which the control board (control unit) is mounted is accommodated in the main body of the electrical parts box made of metal, and the claws on one side of the parts box and the board are connected to the other. The matching grooves of the electric parts box are fitted to fix the parts box and components such as plates, and in such a state, the side cover made of metal is covered on the open surface on the side of the electrical parts box to form a closed state.

In the electric parts box of the above-mentioned prior art example, the number of parts is large due to the parts box body made of metal, members such as a tray which is a resin molded product, and a metal cover process.

In addition, since the components such as the disk must be correctly positioned in the main body of the electrical component box and the claws are fitted into the matching grooves and engaged with each other, the operation is inconvenient and the assembly cost is high.

In order to reduce the above assembly cost, it is necessary to reduce the number of parts while reducing the joint space. However, in the above-mentioned prior art examples, there is a disadvantage that the strength of the assembled parts box decreases if the joint space is reduced.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide an air conditioner with a relatively small number of components, easy assembly, and thus low assembly cost.

Contents of the invention

In order to achieve the above object, the indoor unit of the air conditioner of the present invention has a heat exchanger and an electrical component box interposed between the side of the heat exchanger and the inner wall of the side of the box, wherein the electrical component box It is equipped with: a control unit substrate formed of a resin molded product provided along the side of the casing for mounting the control unit; a connector substrate provided on the front surface side of the casing and provided with connector terminals, etc.; constituted by a metal plate Assembling the side cover, the claw portion and the fitting portion, the claw portion and the fitting portion are arranged on the opposite side portions of the control unit substrate and the connector substrate, and are locked to each other, by which the control unit substrate and the connector The side portions of the substrate are rotatably and temporarily fixed to each other; and the upper edge claw and the claw groove portion are provided on the other side portion of the control unit substrate and the connector substrate so that the mating portion is caught The claws make the connector substrate and the control unit substrate lock each other in a rotating state, and assemble the control unit substrate and the other side of the connector substrate to support each other.

According to the present invention, it is possible to obtain an air conditioner which has a small number of components in the electric parts box and is easy to assemble, so that the assembly work is easy and the assembly cost is low.

Description of drawings

Fig. 1 is an external perspective view of an embodiment of an indoor unit of an air conditioner according to the present invention.

Fig. 2 is a perspective view showing part of the internal structure of the indoor unit of Fig. 1 .

FIG. 3 is a perspective view showing in detail the interior of the electrical component box 10 shown in FIG. 2 .

FIG. 4 is an external perspective view of the electrical component box 10 shown in FIG. 2 .

FIG. 5 is a perspective view showing in detail the connector substrate 16 shown in FIG. 3 .

FIG. 6 is a perspective view showing in detail the control unit substrate 15 shown in FIG. 3 .

FIG. 7 is a perspective view showing an assembled state of the control unit board 15 and the connector board 16 .

FIG. 8 is a perspective view showing an assembled state of the control unit board 15 and the connector board 16 viewed from the inside.

FIG. 9 is a perspective view showing an assembled state of the control unit board 15 and the connector board 16 viewed from the outside.

Label description

1 Chassis

6 heat exchangers

10 electrical parts box

15 Control unit base plate

K connector terminal

16 Connector substrate

17 side cover

22 Side claws

24 rod-shaped member

26 upper edge claw

28 claw hole

30 Hooks

32 claw groove

Detailed ways

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows the appearance of the indoor unit of the air conditioner of the present invention, and FIG. 2 shows a part of the internal structure of the indoor unit.

As shown in FIG. 1 , a cabinet 1 of an indoor unit is composed of a front panel 2 and a rear plate 3 supporting the front panel 2 . On the front surface panel, the front part air suction port 2a and the upper part air suction port 2b are provided in the front part and upper part. The bottom of the cabinet 1 is provided with an air outlet 4, and one side of the air outlet 4 is provided with a receiver/display unit 5 having a receiving function for receiving signals sent by a remote controller shown in the diagram and a display function for displaying the operating status.

As shown in FIG. 2 , various components of the indoor unit such as the heat exchanger 6 are mounted and supported on the rear panel 3 . This heat exchanger 6 is a so-called finned-tube type heat exchanger, and generally forms an approximately V-shape, and one part of the V-shape is arranged opposite to the front air suction port 2a, and the other side The portion of the upper part is arranged opposite to the upper air suction port 2b.

A blower (not shown) is arranged between the two parts of the V-shaped heat exchanger 6 in this way. The air blower is composed of a motor and a cross flow fan driven by the motor, and the cross flow fan is arranged between the two parts of the heat exchanger 6 along its width direction.

Directly below the heat exchanger 6, a drain pan 7 is disposed, and a direction guide plate 8 is provided opposite to the air outlet 4 directly below the heat exchanger 6. Also, the wind direction guide plate 8 (not shown) is a vertically rotating louver that can change the wind direction in the up and down direction, and a left-right rotating louver that can change the wind direction in the left-right direction can also be provided on this part. (not shown).

On the right side of the cabinet 1 , for example, on the right side of the heat exchanger 6 , an electrical component box 10 described below is arranged. The front surface of the electrical component box 10 is sealed with the front cover 11 .

Next, the configuration of the electrical component box 10 will be described with reference to FIGS. 3 and 4 . FIG. 3 is a perspective view showing the inside of the electrical component box 10 , and FIG. 4 is an external perspective view of the electrical component box 10 .

The electric component box 10 is composed of a control unit board 15 and a connector board 16 including resin moldings, the front cover 11 including a metal plate, and side covers 17 described below.

The control unit 15 constitutes the right side in the front view of the electrical component box 10, and is molded from an electrically insulating synthetic resin material. The electrical component box 10 faces the right inner wall surface of the housing 1 with a narrow gap therebetween in a state attached to the rear plate 3 of the housing 1 . The right side part 15a of the control unit substrate 15 is substantially flat, and a control unit (not shown) for mounting electrical control components is mounted on the inner wall surface of the right side part 15a.

The connector board 16 constitutes the front portion of the electrical component box 10 and is exposed on the front side by removing the front cover 11 shown in FIG. 2 . On the connector board 16, electrical components such as connector terminals (K shown in FIG. 5 and FIG. 9 ) not shown here are installed, and the power line extending from the outdoor unit and the above-mentioned receiving and displaying part 5 is connected. and signal lines.

In addition, the connector substrate 16 must have electrical insulation, and since a plurality of boss portions provided with screw holes for mounting the front cover 11 are integrally provided, the shape is complicated, so a synthetic resin mold is used.

The side cover 17 constitutes the side portion (left side in the front view) of the electrical component box 10 on the side where the heat exchanger 6 is disposed, and is used to block heat so that heat generated in the heat exchanger 6 is generated during the operation of the refrigeration cycle. The influence of the heat does not spread to the metal plate contained inside the electrical component box 10 . In particular, a portion of the side cover 17 facing the air blower is formed with a concave portion 17 a protruding inward, so that the air blower does not interfere with the electrical component box 10 .

Such control unit substrate 15 and connector substrate 16, and front surface cover 11 and side cover 17 are combined, and under the state that assembles and forms electric parts box 10, control unit substrate 15 and connector substrate 16, and front surface cover 11 and The side parts of the side cover 17 are tightly joined to each other to form a closed box.

In particular, on the upper surface of the control unit substrate 15 , a rib 21 is integrally provided on the side edge connected to the upper surface of the side cover 17 . That is, in the assembled state as the electrical component box 10 , the upper end edge of the rib 21 of the control unit substrate 15 is in close contact with the inner wall surface of the upper surface portion of the side cover 17 .

Therefore, even if water droplets are scattered from the heat exchanger 6 or enter the interior of the cabinet 1 from the upper air intake port 2b, since the above-mentioned ribs 21 exist at least on the upper surface of the control unit substrate 15 and the side cover 17, the water droplets can be reliably prevented from entering. The inside of the electrical parts box 10 .

Next, details of the structure in which the connector board 16 is assembled on the above-mentioned control unit board 15 will be described.

FIG. 5 is a perspective view of the connector board 16 , and FIG. 6 is a perspective view of the control unit board 15 .

As shown in FIG. 5, the upper part of the right side A in the figure of the connector substrate 16 is integrally provided with a rectangular shape in a bent state in the direction perpendicular to the board surface of the connector substrate 16, that is, on the depth side. A rectangular opening 23 is provided on the front surface of the connector substrate 16 below the side edge claw 22 , and the remaining portion between the opening 23 and the side edge is called a rod-shaped member 24 .

On the lower side of these openings 23 and the rod-shaped member 24 , similarly to the side edge claws 22 , restraining pieces 25 integrally protruding toward the depth side in a direction perpendicular to the board surface of the connector board 16 are provided.

The suppression piece 25 has a predetermined width in the width direction of the connector board 16 and is formed by bending its front edge downward.

On the upper end edge of the connector board 16, on the inner side than the left side in the drawing, there is provided an upper edge claw 26 that is perpendicular to the board surface of the connector board 16 and protrudes integrally in the depth direction. The upper edge claw 26 has a predetermined width in the width direction of the connector substrate 16 .

As shown in FIG. 6, the control unit substrate 15 has a substantially flat right side surface 15a for mounting the control unit, a front surface portion 15b located on the front side of the electrical component box 10, and a front surface portion 15b extending from the upper end of the right side surface 15a to the front side of the electrical component box 10. The upper surface portion 15c is integrally bent in the horizontal direction and provided integrally with the front surface portion 15b, and the inclined surface portion 15d is provided between the front surface portion 15b and the upper surface portion 15c. The rib 21 is integrally erected along the end edge thereof on the upper surface portion 15c.

A rectangular claw hole portion 28 is provided above the corner formed by the right side surface portion 15 a and the front surface portion 15 b of such a control unit substrate 15 . The claw holes 28 engage with the side edge claws 22 provided on the connector substrate 16 when the control unit substrate 15 and the connector substrate 16 are combined. In addition, the vertical length of the claw hole portion 28 is formed to be larger than the vertical length of the side edge claw 22 .

On the lower end front portion of the control unit base plate 15, a claw support piece 29 is integrally provided. The claw 30 is integrally provided on the front surface portion of the claw support piece 29 . The claws 30 are engaged with the openings 23 provided on the connector board 16 when the control unit board 15 and the connector board 16 are combined. Also, the hook claw 30 has a size capable of fitting with the rod-shaped member 24 provided adjacent to the opening portion 23 .

On the right side surface 15 a of the control unit substrate 15 , in the vicinity of the claw support piece 29 , a blocking piece 31 is integrally protrudingly provided. The blocking piece 31 has a trapezoidal shape when viewed from the side of the control unit board 15 , and engages with the above-mentioned upper edge claw 26 provided on the connector board 16 when the control unit board 15 and the connector board 16 are combined.

Next, an assembly process of the electrical component box 10 described above will be described.

When assembling the electrical component box 10 , first, the control unit substrate 15 and the connector substrate 16 are provisionally assembled.

FIG. 7 is a perspective view showing an assembled state of the control unit board 15 and the connector board 16 .

The operator supports the control unit substrate 15 with one hand, supports the connector substrate 16 with the other hand, and lifts the side part B of the control unit substrate 15 (refer to FIG. ) is butted against the side portion A (see FIG. 5 ) of the connector substrate 16 so that the inner surface sides of the control unit substrate 15 and the connector substrate 16 can be seen clearly.

Next, the side edge claws 22 of the connector substrate 16 are inserted into the claw holes 28 of the control unit substrate 15, and at the same time, the claws 30 of the control unit substrate 15 are inserted through the openings 23 of the connector substrate 16, and the The claw 30 cooperates with the rod member 24 . In such a state, the control unit substrate 15 and the connector substrate 16 are temporarily assembled as shown in FIG. 7 .

In such a temporarily assembled state, the control unit board is joined to the connector board 16 , so the operator only needs to grasp either the control unit board 15 or the connector board 16 , and can move freely with one hand.

In the temporary assembly state described above, the side edge claws 22 of the connector substrate 16 fit into the claw hole portions 28 of the control unit substrate 15, and the rod-shaped members 24 of the connector substrate 16 fit into the claws 30 of the control unit substrate 15, thus connecting The right side portion A of the device substrate 16 is rotatably supported by the side portion B of the control unit substrate 15 . At this time, since the connector board 16 is separated from the control unit board 15 by more than 90°, the blocking piece 31 of the control unit board 15 is separated from the restraining piece 25 of the connector board 16 .

Next, take the butt joint portion of the control unit substrate 15 and the connector substrate 16, that is, the butt portion of the side portion B of the control unit substrate 15 and the side portion A of the connector substrate 16, as an axis, to connect the control unit substrate 15 to the connector substrate 16. The device substrates 16 are rotated to form 90° relative to each other. When they are rotated to form such an opening angle of 90°, the upper edge claws 26 provided on the connector board 16 are inserted into the claw grooves 32 provided on the control unit board 15 to engage with each other. As a result, the assembly of the control unit substrate 15 and the connector substrate 16 is completed.

FIG. 8 shows a state in which the assembly of the control unit substrate 15 and the connector substrate 16 is completed as viewed from the inside. FIG. 9 shows an assembled state of the control unit substrate 15 and the connector substrate 16 viewed from the outside.

In this state, as described above, the side edge claws 22 of the connector substrate 16 are engaged with the claw hole portions 28 of the control unit substrate 15, and the rod-shaped members 24 of the connector substrate 16 are engaged with the claws 30 of the control unit substrate 15. At the same time, the upper edge claw 26 of the connector substrate 16 and the claw groove portion 32 of the control unit 15 are engaged with each other.

As shown in FIGS. 8 and 9, the side portion A of the connector substrate 16 is in close contact with the side portion B of the control unit substrate 15, and the upper part of the connector substrate 16 is in contact with a part of the front surface portion 15b of the control unit substrate 15. It is in close contact with a part of the inclined surface 15d, respectively. Moreover, the restraining piece 25 of the connector substrate 16 abuts against the blocking piece 31 of the control unit substrate 15 to restrict the further rotation of the control unit substrate 15 and the connector substrate 16 in the closing direction.

Next, when the side portions of the side cover 17 are fitted along the opposing side portions of the control unit substrate 15 and the connector substrate 16, the electrical component box 10 is assembled in the state shown in FIG. 4 , and the assembly is completed. Next, the electrical component box 10 is mounted on the rear panel 3 as shown in FIG. 2 , thereby completing the installation of the electrical component box 10 on the chassis 1 .

Also, in the above-mentioned embodiment, the side edge claw 22 and the rod-shaped member 24 and the upper edge claw 26 are provided on the connector substrate 16, and the matching claw hole 28 and the hook claw 30 are respectively provided on the control unit substrate 15. Claw groove portion 32, but not limited thereto, claw hole portion 28, hook claw 30 and claw groove portion 32 may also be set on connector substrate 16, and matching side edge claw 22 and lever are respectively set on control unit substrate 15 Shaped member 24 and upper edge claw 26.

In addition, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist thereof.

Claims (1)

1. An indoor unit of an air conditioner, wherein a heat exchanger and an electrical component box interposed between a side portion of the heat exchanger and an inner wall of the side portion of the case are provided in the case, wherein, The electrical parts box has: A control unit substrate made of a resin molded product is provided along the side of the case to mount the control unit; a connector substrate provided on the front surface side of the housing and provided with connector terminals and the like; A claw portion and a mating portion, which are assembled with a side cover containing a metal plate, are provided on opposite side portions of the control unit substrate and the connector substrate, and are engaged with each other, by which the control side portions of the unit substrate and the connector substrate are rotatably temporarily fixed to each other; and Upper edge claws and claw grooves, the upper edge claws and claw grooves are arranged on the other side of the control unit substrate and the connector substrate, so that the matching portion engages the claws, and the connector substrate is rotated Interlocking with the control unit substrate, the control unit substrate and the other side of the connector substrate are assembled to support each other.

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