JP2005274036A - Electric component storage box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric component storage box having inexpensive construction for surely protecting an electronic control panel from small animals, insects, dust or liquid over a long period. <P>SOLUTION: The electric component storage box comprises the electronic control panel 2 for controlling an electric component, a storage box 1a for storing the electronic control panel 2, a storage box cover 4 for covering the storage box 1a at its upward opening, and a rib 5 integrally formed on the reverse of the storage box cover 4 so as to protrude in opposition to the whole peripheral edge of the stored electronic control panel 2. The electronic control panel 2 is sealed at its upper face with an insulating material 3 laid between the lower end of the rib 5 and the electronic control panel 2. The insulating material is applied only to a range where the rib 5 on the storage box cover 4 is opposed thereto, therefore greatly reducing material cost and machining cost and still surely protecting the electronic control panel 2 from small animals, insects, water or dust. Furthermore, the insulating material is located in the electric component storage box 1, therefore maintaining air tightness over a long period without exposure directly to outside air and air in the equipment. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electrical component storage box incorporating an electronic control board for controlling electrical components.

  Conventionally, various methods for protecting an electronic control board stored in an electrical component storage box from water, dust, insects and the like have been proposed.

  12 and 13 show an example of a conventional electrical component storage box. The electrical component storage box 1 includes a storage container 1a for storing an electronic control plate 2 having a function of controlling a refrigeration cycle, and a storage container 1a. The electronic control board 2 is configured to prevent a short circuit on the pattern surface or the like due to the invasion of small animals or insects entering the storage container 1a, thereby destroying the electric circuit or causing a fire. In addition, an insulating material 3 such as silicon was applied to the entire surface.

  In some cases, an outer peripheral wall that surrounds the outer periphery of the electronic control plate is provided on the storage container side, and an PT sealer (sponge-like dustproof or waterproof sealant) is attached to the entire periphery of the joint between the upper end of the outer peripheral wall and the lid.

In addition, an outer peripheral wall surrounding the outer periphery of the electronic control board is provided on the storage container side, and the upper end of the outer peripheral wall is sandwiched from the outside and the inside, and double ribs that make the periphery of the electronic control board moisture and dust-proof are covered with the lid Some are provided (see, for example, Patent Document 1).
JP 2003-106573 A

  However, the method of applying the insulating material 3 such as silicon to the entire surface of the electronic control board 2 requires a large amount of the insulating material 3, so that there is a problem that it is expensive due to extra material costs and processing costs. Had.

  In addition, the method of attaching the sealing material to the entire circumference of the joint between the upper end of the outer peripheral wall and the lid increases the material cost of the sealing material, and requires a lot of man-hours to apply the sealing material. There existed the subject that it located in an outer surface and was exposed to external air or the air in an apparatus, and deteriorated easily.

  In addition, the one with the upper end of the outer peripheral wall sandwiched from the outside and inside by double ribs is easier to assemble than the application of the sealing material and the application of the insulating material, but the lid and storage container are made of resin. In the case where the electrical component storage box is assembled, a gap is required between the upper end of the outer peripheral wall and the double rib for assembly of the electrical component storage box. However, there has been a problem that the intrusion of moisture and dust cannot be reliably prevented for a long time.

  The present invention solves such conventional problems, and is an electrical component storage box that is inexpensive and easy to process, and can reliably protect an electronic control board from small animals, insects, dust, water, and the like. The purpose is to provide.

In order to solve the conventional problems, an electrical component storage box according to the present invention includes an electronic control plate that controls electrical components, a storage box that stores the electronic control plate, and a storage box that covers an upper opening of the storage box. A lid and a rib projecting opposite to the entire periphery of the electronic control plate integrally formed and stored on the back surface of the storage box lid; and an insulating material between the lower end of the rib and the electronic control plate Since the upper surface of the electronic control board is sealed and only the insulating material needs to be applied to the area where the ribs provided on the storage box lid face each other, material costs and processing costs can be greatly reduced. The electronic control board can be reliably protected from small animals, insects, water and dust. Furthermore, since the insulating material is in the electrical component storage box, it is not directly exposed to the outside air or the air in the equipment and is not easily deteriorated, so that the airtightness can be maintained for a long period of time.

  The electrical component storage box of the present invention can reliably protect the electronic control board from small animals, insects, water and dust only by applying an insulating material to the range where the ribs provided on the storage box lid face each other. In addition, material costs and processing costs can be greatly reduced. In addition, since the insulating material is in the electrical component storage box, there is little deterioration and the airtightness can be maintained for a long time.

  According to a first aspect of the present invention, there is provided an electronic control board for controlling electrical components, a storage box for storing the electronic control board, a storage box cover for covering an upper opening of the storage box, and a back surface of the storage box cover. A rib protruding opposite to the entire periphery of the electronic control plate formed and accommodated is provided, and an insulating material is interposed between the lower end of the rib and the electronic control plate to seal the upper surface of the electronic control plate Therefore, it is only necessary to apply insulating material to the area where the ribs on the storage box lid face each other, so material costs and processing costs can be greatly reduced, and the electronic control board can be reduced from small animals, insects, water and dust. It can be surely protected. Furthermore, since the insulating material is in the electrical component storage box, it is not directly exposed to the outside air or the air in the equipment and is not easily deteriorated, so that the airtightness can be maintained for a long period of time.

  In the second invention, in particular, an insulating material is applied across the inner surface of the storage box and the outer periphery of the electronic control plate of the first invention, and the gap between the inner surface of the storage box and the outer periphery of the electronic control plate is blocked. By sealing the lower surface of the control plate, the electronic control plate can be reliably protected from small animals, insects, water, dust, and the like.

  In the third invention, in particular, the insulating material is applied to the tip of the rib of the first or second invention, and then the storage box is covered with the storage box lid. The application range of the insulating material is clear and the operation is stable. Therefore, the amount of insulating material applied can be reduced, and the processing cost and the number of processing steps can be greatly reduced.

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

(Embodiment 1)
FIG. 1 is a front view of an air conditioner equipped with an electrical component storage box according to a first embodiment of the present invention, FIG. 2 is a plan view showing the internal configuration of the air conditioner, and FIG. 4 is an exploded perspective view of the electrical component storage box, FIG. 4 is a rear perspective view of the storage box lid of the electrical component storage box, and FIG. 5 is a cross-sectional view of the electrical component storage box.

  In the figure, an electrical component storage box 1 is composed of a storage box 1a for storing an electronic control plate 2 that is arranged at the top of an air conditioner and controls a refrigeration cycle and the like, and a storage box lid 4 that covers an upper opening of the storage box 1a. Has been. On the back surface of the storage box lid 4, a rib 5 protruding so as to face the entire periphery of the electronic control plate 2 is integrally provided. 3 is an insulator made of silicon or the like.

  Hereinafter, storage of the electronic control plate 2 in the electrical component storage box 1 will be described.

  As shown in FIG. 5, first, in order to close the gap between the storage box 1 a and the outer periphery of the electronic control plate 2, an insulating material 3 such as silicon is straddled across the inner surface of the storage box 1 a and the outer periphery of the electronic control plate 2. Apply. Further, the insulating material 3 applied to the electronic control plate 2 is applied from the outer periphery of the electronic control plate 2 to a range facing the rib 5 provided on the storage box lid 4 and when the storage box 1a is closed by the storage box lid 4. Is in contact with the rib 5 so that the gap is sealed.

  Further, as shown in FIG. 6, the insulating material 3 closes the outer peripheral gap where the storage box 1 a and the electronic control plate 2 are in contact with each other, and is positioned on the outer wall of the rib 5 provided on the storage box lid 4 from the outer periphery of the electronic control plate 2. The entire circumference of the range to be applied may be applied, and the insulating material 3 applied to the electronic control plate 2 may come into contact with the outer wall of the rib 5 provided on the storage box lid 4 to be sealed.

  Further, as shown in FIG. 7, the insulating material 3 is applied to the surface of the electronic control plate 2 facing the entire circumference in the range located on the inner wall of the rib 5 provided on the storage box lid 4. The applied insulating material 3 may be in contact with the inner wall of the rib 5 and sealed.

  As described above, according to the present embodiment, the outer peripheral space where the storage box 1a and the electronic control plate 2 are in contact is closed with the insulating material 3 such as silicon, and further provided on the storage box lid 4 from the outer periphery of the electronic control plate 2. The outer periphery where the storage box 1a and the electronic control plate 2 are in contact with each other is applied to the range facing the rib 5 and the gap between the electronic control plate 2 and the rib 5 provided on the storage box lid 4 is sealed. Since it is only necessary to apply the insulating material 3 such as silicon in a range where the gap and the rib 5 provided on the storage box lid 4 face each other, the electronic control board 2 is surely protected from small animals, insects, water, dust and the like. In addition, the processing cost and the number of processing steps can be greatly reduced.

(Embodiment 2)
FIG. 8 is an exploded perspective view of an electrical component storage box according to the second embodiment of the present invention, FIG. 9 is a rear perspective view of a storage box lid covering the storage box of the electrical component storage box, and FIG. It is sectional drawing of an electrical component storage box. The same parts as those in the above embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In this embodiment, as shown in FIGS. 8 to 10, a relatively thick rib 6 is provided on the back surface of the storage box lid 4, and after applying the insulating material 3 to the end surface of the rib 6, the electronic control board 2 is installed. The stored storage box 1a is closed, and the insulating material 3 applied to the surface of the rib 6 contacts the electronic control plate 2 to seal the gap.

  Further, as shown in FIG. 11, the insulating material 3 is applied to the end face of the rib 6 provided on the storage box lid 4 or a position facing the rib 6 of the electronic control board 2, and the surface of the electronic control board 2 and the rib 6 are applied. These surfaces may contact with each other via the insulating material 3 applied to either side, and the gap may be sealed.

  As described above, according to the present embodiment, the insulating material 3 such as silicon is applied to the surface of the rib 6 provided on the storage box lid 4 covering the storage box 1a and the electronic control plate 2, and the electronic control plate 2 is applied. By sealing the gap between the surface of the rib 6 and the surface of the rib 6 via the insulating material 3, the application range of the insulating material 3 becomes clear, the operation is stable, and the amount of application can be greatly reduced. In addition, the processing man-hours can be greatly reduced, and the electronic control plate 2 can be reliably protected from water and dust such as small animals and insects.

  As described above, the electrical component storage box according to the present invention can protect the electronic control board from small animals, insects, water, and dust with a small amount of insulating material. The present invention can be widely applied to electrical component storage boxes mounted on various devices.

The front view of the air conditioner carrying the electrical equipment storage box in Embodiment 1 of this invention Top view of the air conditioner An exploded perspective view of the electrical component storage box Rear perspective view of the storage box lid of the electrical equipment storage box Cross section of the electrical equipment storage box Sectional view of electrical component storage box showing another example Sectional view of electrical component storage box showing yet another example The exploded perspective view of the electrical equipment storage box in Embodiment 2 of this invention Rear perspective view of the storage box lid of the electrical equipment storage box Cross section of the electrical equipment storage box Sectional view of electrical component storage box showing another example An exploded perspective view of a conventional electrical component storage box Perspective view of storage box lid of electrical component storage box

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electrical component storage box 1a Storage box 2 Electronic control board 3 Insulation material 4 Storage box cover 5, 6 Rib

Claims (3)

An electronic control plate for controlling electrical components; a storage box for storing the electronic control plate; a storage box cover for covering an upper opening of the storage box; and the electronic device integrally formed and stored on the back surface of the storage box cover An electrical component storage box in which a rib protruding opposite to the entire periphery of the control plate is provided, and an insulating material is interposed between the lower end of the rib and the electronic control plate, and the upper surface of the electronic control plate is sealed. An electrical component storage box for an air conditioner, wherein an insulating material is applied across the inner surface of the storage box and the outer periphery of the electronic control board. The electrical equipment storage box for an air conditioner according to claim 1 or 2, wherein the storage box is covered with a storage box lid after an insulating material is applied to the tip of the rib.

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