JP3802156B2 - Controller - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an operating device disposed at a position covered by a front panel of an air conditioner.
[0002]
[Prior art]
In general, as shown in FIG. 2, an indoor unit of an air conditioner is provided with a suction grill 2 for intake air on the front surface of a unit housing 1 and an intake port 3 on an upper surface. An air filter 4 for removing dust and an air purifying filter 5 for removing smaller dirt are provided inside the suction grill 2.
[0003]
Further, the cooling air or the heating air is discharged from an air outlet 6 provided on the lower surface of the unit housing 1, and the air outlet 6 has a flap 7 for adjusting the wind direction in the vertical direction and a horizontal direction. Left and right wind direction adjusting wings 8 are provided for adjusting the wind direction.
[0004]
The unit casing 1 is provided with a unit operation section (described later), and this unit operation section is hidden by the suction grill 2. Therefore, as shown in FIG. 3A, when the suction grill 2 is opened, the unit operation unit 9 disposed in the unit housing 1 can be operated.
[0005]
As shown in FIG. 5B, the unit operation unit 9 designates self-diagnosis lamps 9a, 9b, and 9c for inspection and service, and when this indoor unit is used as one of a plurality of indoor units. An address setting knob 9d for setting an address, an operation knob 9e for setting an operation mode, and a remote control address knob 9f for designating an address of a remote control for operating the indoor unit when a plurality of remote controls are used. Is provided.
[0006]
FIG. 4 shows an example of the configuration of the unit operation unit 9.
[0007]
In the figure, a circuit board 10 includes light-emitting diodes constituting self-diagnosis lamps 9a, 9b and 9c, a rotary switch 11 whose contact is switched by an address setting knob 9d, a slide switch 12 whose contact is switched by an operation knob 9e, A slide switch 13 whose contact is switched by a remote control address knob 9f is provided, and the circuit board 10 is covered with a cover 14 made of an insulating material.
[0008]
Further, on the upper surface 14a of the cover 14, windows 14b, 14c, and 14d for allowing the self-diagnosis lamps 9a, 9b, and 9c to be visible are formed, and an address setting knob 9d, an operation knob 9e, and Windows 14e, 14f, and 14g are formed to allow the remote control address knob 9f to pass through and operate.
[0009]
Therefore, in a normal use state, the unit operation unit 9 is protected from static electricity by the withstand voltage performance of the cover 14.
[0010]
[Problems to be solved by the invention]
However, conventionally, the unit operation unit 9 has the following disadvantages.
[0011]
That is, in the winter season, the air conditioner is heated and the room including the interior of the indoor unit is dried, so that static electricity is likely to be generated. In particular, the human body may be charged with static electricity of about 10 KV, and a situation such as a spark flying between a metal material such as a door handle occurs.
[0012]
Here, in order to inspect the indoor unit, when the service person opens the suction grill 2 to expose the unit operation part 9 and operates the unit operation part 9, as shown in FIG. The static electricity that has been run between the internal elements of the unit operation unit 9 (the rotary switch 11 or the slide switches 12, 13, etc.). As a result, the electrical and electronic components mounted on the circuit board 10 There was a risk of damage.
[0013]
The present invention has been made in view of such circumstances, and an object thereof is to provide an operating device having a good withstand voltage performance.
[00114]
[Means for Solving the Problems]
The present invention provides an operating device disposed at a position covered by a front panel of an air conditioner, and includes at least one switch body fixed to a circuit board and provided with a protrusion for operation, and One or more cover members made of an insulating material provided corresponding to the switch main body and covering the switch main body and having a hole for projecting the protrusion, and the cover member including the switch main body One or more sleeve members made of an insulating elastic material to be fitted and fixed to each other, and one or more knobs provided corresponding to each of the switch bodies and fitted to the protrusions protruding from the holes A member and a cover that covers the entire circuit board and has one or more windows for projecting the knob member are provided.
[0016]
The cover member may be formed thin enough to obtain a required withstand voltage characteristic.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0018]
FIG. 1 shows a unit operation unit according to an embodiment of the present invention. In the figure, the same parts as those in FIG. 4 are denoted by the same reference numerals.
[0019]
In the figure, a circuit board 10 includes light-emitting diodes constituting self-diagnosis lamps 9a, 9b and 9c, a rotary switch 11 whose contact is switched by an address setting knob 9d, a slide switch 12 whose contact is switched by an operation knob 9e, In addition, a slide switch 13 whose contact is switched by a remote control address knob 9f is provided.
[0020]
Further, the rotary switch 11 is provided with a cover member 20 made of an insulating material covering the periphery, and the cover member 20 is fixed to the peripheral surface of the rotary switch 11 by a sleeve member 21 made of an insulating elastic material. The cover member 20 is formed with a hole 20a so that the protrusion 11a of the rotary switch 11 protrudes and can be fitted to the address setting knob 9d.
[0021]
The slide switches 12 and 13 are provided with cover members 22 and 23 made of an insulating material for covering the periphery. The cover members 22 and 23 are respectively provided by sleeve members 24 and 25 made of an insulating elastic material. , 13 are fixed to the peripheral surface. Further, the cover members 22 and 23 are respectively formed with holes 22a and 23a so that the projections 12a and 13a of the slide switches 12 and 13 protrude from the cover members 22 and 23, respectively, and can be fitted to the operation knob 9e and the remote control address knob 9f. ing.
[0022]
The circuit board 10 is covered with a cover 14 made of an insulating material, and the circuit board 10 is fixed to the cover 14 with screws 26. Further, on the upper surface 14a of the cover 14, windows 14b, 14c, and 14d for allowing the self-diagnosis lamps 9a, 9b, and 9c to be visible are formed, and an address setting knob 9d, an operation knob 9e, and Windows 14e, 14f, and 14g are formed to allow the remote control address knob 9f to pass through and operate.
[0023]
Here, as the cover members 20, 22, and 23, thin plate-like bending members can be used, respectively. The thickness dimension of this bending member is, for example, about 0.2 to 0.3 (mm). Moreover, as a material of the cover members 20, 22, and 23, for example, an insulating resin such as vinyl chloride can be used. Similarly, as the material of the sleeve members 21, 24, 25, for example, an elastic insulating resin such as soft vinyl chloride can be used.
[0024]
In this way, in this embodiment, the periphery of the case body of the rotary switch 11 and the slide switches 12 and 13 is insulated by the cover members 20, 22, and 23, so that withstand voltage performance of 12 to 15KV can be obtained. It is possible to prevent electrostatic breakdown due to the operation of a service person during winter driving.
[0025]
In the above-described embodiment, the cover member that covers the periphery of the switch is realized as a bending member. However, a box-shaped shaping member can also be used. In that case, the sleeve member becomes unnecessary.
[0026]
【The invention's effect】
As described above, according to the present invention, since the periphery of the case body of the switch is insulated by the cover member, 12 to 15 KV can be obtained as the withstand voltage performance, and the operation by the service person during the winter operation An effect is obtained that electrostatic breakdown can be prevented in advance.
[Brief description of the drawings]
FIG. 1 is a schematic exploded perspective view showing a unit operation unit according to an embodiment of the present invention.
FIG. 2 is a schematic perspective view showing an example of an indoor unit of an air conditioner.
FIG. 3 is a schematic diagram illustrating an example of a unit operation unit.
FIG. 4 is a schematic exploded perspective view showing a conventional example of the configuration of a unit operation unit.
FIG. 5 is a schematic perspective view for explaining a problem of a conventional apparatus.
[Explanation of symbols]
20, 22, 23 Cover member 21, 24, 25 Sleeve member

Claims (2)

In the operation device disposed at a position covered by the front panel of the air conditioner,
One or more switch bodies fixed to the circuit board and provided with protrusions for operation;
One or more cover members made of an insulating material provided corresponding to each of the switch bodies, covering the switch bodies and having holes for projecting the protrusions;
One or more sleeve members made of an insulating elastic material for fitting and fixing the cover member to the switch body;
One or more knob members provided corresponding to each of the switch bodies and fitted into the protrusions protruding from the holes;
An operating device comprising a cover which covers the entire circuit board and has one or more windows for projecting the knob member.   2. The operating device according to claim 1, wherein the cover member is formed thin enough to obtain a required withstand voltage characteristic.

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