JP2008232554A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner ensuring safety around a terminable board and facilitating the attaching/detaching work the electric equipment cover to attain efficiency in the connection work of a connecting electric wire while causing no failure to mount the electric equipment cover. <P>SOLUTION: The air conditioner is provided with a front frame of an indoor unit; the terminal board provided in an electric equipment box in which electronic components are stored; a door for opening and closing an opening formed at the front frame; and the electric equipment cover formed using a nonflammable material and provided on the back side of the door to cover the terminal board. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an indoor unit of an air conditioner.

  In recent years, demands for product safety and reliability have increased, and further improvements in air conditioners have been demanded. For this reason, various measures have been taken with respect to electrical component boxes for storing electronic components, such as flame-retardant resin materials, non-flammability using sheet metal materials, and attachment of safety devices.

  Conventionally, in this type of air conditioner, the terminal block and electronic components are mainly housed in the electrical component box, and the terminal block is easy to install when connecting the outdoor unit and connecting wires (crossover wiring) during installation. In consideration, they are exposed on the front side (see, for example, Patent Document 1).

In the air conditioner described in Patent Document 1, a terminal block and electronic components are housed in a box or the like. The terminal block is disposed so as to be exposed on the front side, and the crossover wiring is connected to the terminal block from below.
JP 2003-83567 A

  However, in the configuration of the electrical component box in the conventional air conditioner described above, the terminal block is exposed to the front side because the connection work of the electric wire of the terminal block is required, and if a connection failure of the terminal block occurs, the safety There was a problem of lacking.

  In addition, it is technically easy to cover the terminal block with an electrical cover made of a non-combustible material such as sheet metal material. Not only did it worsen, but there was also a problem that forgetting to attach the electrical cover might occur.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide an air conditioner that facilitates the operation of inserting an electric wire into a terminal block while ensuring safety.

  In order to solve the above problems, an air conditioner of the present invention includes a front frame of an indoor unit, a terminal block provided in an electrical component box in which electronic components are stored, and an opening formed in the front frame. A door that opens and closes, and an electrical cover that is formed using a non-combustible material and is provided on the back side of the door and covers the terminal block.

  Thereby, since the terminal block is shielded by the noncombustible material, safety around the terminal block can be ensured even when a connection failure of the electric wire to the terminal block occurs. Further, since the door and the electrical cover are integrated, the electrical cover is also opened and closed simultaneously with the opening and closing of the door, so that the electrical cover can be easily attached and detached.

  According to the air conditioner of the present invention, the safety around the terminal block can be secured, the electrical cover can be easily attached and detached, and the electric wire connection work can be performed efficiently. In addition, forgetting to attach the electrical cover does not occur.

  1st invention uses the front frame of an indoor unit, the terminal block provided in the electrical component box in which an electronic component is accommodated, the door which opens and closes the opening formed in the said front frame, and a nonflammable material And an electrical cover that is provided on the back side of the door and covers the terminal block.

  Thereby, safety around the terminal block can be secured. Further, since the door and the electrical cover are integrated, the opening and closing of the door and the opening and closing of the electrical cover can be linked, and the electrical cover can be easily attached and detached.

  According to a second invention, in the first invention, a rib surrounding the terminal block is provided on the back surface of the door, and an electrical cover is provided on the inner side of the rib along the rib. As a result, the electrical cover is reinforced by the ribs and stabilized, and the end face of the electrical cover does not protrude.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is an exploded perspective view of a main part of an air conditioner (indoor unit) according to Embodiment 1 of the present invention.

  As shown in FIG. 1, the electrical component box 1 is provided at a location adjacent to the heat exchanger 3 and the drain pan 4, and is covered with a frame 2 and a front frame 5. A substrate cover 7 made of a sheet metal material that covers the control substrate 6 and the control substrate 6 is provided on the upper portion. A terminal block 8 is provided at the center, and the terminal block 8 is connected to the control board 6 and the like by a lead wire 9. A tunnel portion 14 that guides the connecting wire 10 and forms a passage therethrough is provided at the lower portion, and a display substrate 15 equipped with LEDs and the like is provided at the front surface thereof.

  The terminal block 8 is connected to a connection wire 10 routed from an outdoor unit at the installation site of the air conditioner. Below the terminal block 8, an electric wire holding resin 11 and an electric wire fixing screw 12 for fixing the connection electric wire 10 are provided, and a partition plate 13 made of a sheet metal material is provided on the back side of the terminal block 8 and the electric wire holding resin 11. It is done.

  An opening 16 is formed in the front frame 5 so as to face the positions of the terminal block 8 and the wire pressing resin 11, and a door 17 is provided in the opening 16 so as to close the opening 16. . A pair of left and right C-shaped bearings 18 are provided at the upper end of the door 17, and a screw hole 20 through which the door fixing screw 19 passes is provided at the lower end.

  FIG. 2 is a rear view of the door 17. As shown in FIG. 2, a box-shaped rib 21 is provided on the back surface of the door 17 so as to surround the terminal block 8 and the wire pressing resin 11, and the tip of the rib 21 is in contact with the electrical component box 1. A plurality of hooking claws 22 are formed inside the rib 21, and a rib cutout portion 23 for penetrating the connecting wire 10 is provided at the lower end of the rib 21.

  A pair of left and right shaft-shaped fulcrums 24 are provided in the upper part of the opening 16 of the front frame 5, and a boss part 25 is provided in the lower part. The door 17 is fixed by the door fixing screw 19 in a state where the upper bearing 18 is engaged with the fulcrum 24 of the front frame 5 and the screw hole 20 and the boss portion 25 are in contact with each other.

  The electrical cover 26 made of a non-combustible material such as a sheet metal material has a box-like shape formed by bending a sheet metal, and an electrical cover cutout portion 27 through which the connecting wire 10 passes is formed at the lower end. A plurality of square holes 28 are provided on the side surface.

  The electrical cover 26 is inserted into the rib 21 formed on the back surface of the door 17 along the rib 21, and the square hole 28 is engaged with and fixed to the hooking claw 22. The end face of the electrical cover 26 is provided so as to be flush with or slightly recessed from the end face of the rib 21.

  3 and 4 are a longitudinal sectional view and a plan sectional view around the terminal block 8, respectively. As shown in FIGS. 3 and 4, when the door 17 is in a closed state, the electrical cover 26 is sealed by covering the terminal block 8 and the upper and lower sides and the left and right sides of the wire pressing resin 11 together with the ribs 21 of the door 17.

  FIG. 5 is a longitudinal sectional view around the terminal block 8 with the door 17 opened. As shown in FIG. 5, when the door 17 is in the open state, the door 17 is rotated around the fulcrum 24 of the front frame 5, and the electrical cover 26 fixed inside the door 17 is the door. 17 and the terminal block 8 and the wire pressing resin 11 portion are opened. In the installation work, a hand is inserted from the opening 16 of the front frame 5 in the state of the door 17 to connect the connecting wire 10.

  That is, since it is not necessary to remove the electrical cover 26 and the terminal block 8 and the like are exposed, the connection wire 10 can be easily connected.

  As described above, according to the present embodiment, the terminal block 8 is covered with the non-combustible material electrical cover 26 and the electrical cover 26 is attached to the back surface of the door 17 of the front frame 5 so that the non-combustible material is provided around the terminal block 8. Even when a material barrier is formed and a connection failure of the connecting wire 10 to the terminal block 8 occurs, safety around the terminal block 8 can be ensured.

  Further, since the door 17 and the electrical cover 26 are integrated, the electrical cover 26 can be easily attached and detached, and the wire connection work can be performed efficiently. In addition, forgetting to attach the electrical cover 26 does not occur.

  Further, in the present embodiment, the rib 21 is provided on the back surface of the door 17 so as to cover the terminal block 8, and the electrical cover 26 is provided along the rib 21 on the inner side, so the electrical cover 26 is the rib 21. It is reinforced and the mounting is stabilized, and the end face of the electrical cover 26 does not protrude from the rib 21.

  Further, since the electrical cover 26 is fixed by engaging the square holes 28 with the hooking claws 22 of the ribs 21 of the door 17, it is easy to mount and no extra parts are required.

  In the present embodiment, the electric cover 26 is integrated and the terminal block 8 is covered. However, for example, a split structure in which a part is left in the power supply box 1 and the other part is provided in the door 17, Needless to say, the same effect can be obtained.

  As described above, the electrical equipment box of the air conditioner according to the present invention can be applied to devices that require wire connection work at the installation site, in addition to the air conditioner.

The disassembled perspective view of the principal part of the air conditioner (indoor unit) by Embodiment 1 of this invention. Rear view of door 17 of the same embodiment Vertical sectional view around the terminal block 8 of the same embodiment Plan sectional view around terminal block 8 of the same embodiment Vertical sectional view around the terminal block 8 with the door 17 of the same embodiment opened

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electrical component box 5 Front frame 8 Terminal block 16 Opening part 17 Door 21 Rib 24 Support point 26 Electrical component cover

Claims (2)

A front frame of the indoor unit, a terminal block provided in an electrical component box in which electronic components are stored, a door that opens and closes an opening formed in the front frame, and a rear side of the door that is formed using a noncombustible material An air conditioner provided with an electrical cover that is provided on the terminal block and covers the terminal block. The air conditioner according to claim 1, wherein a rib surrounding the terminal block is provided on a back surface of the door, and the electrical cover is provided on the inner side of the rib along the rib.

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