JP-2026076018-A - Storage structure for electronic devices

JP2026076018AJP 2026076018 AJP2026076018 AJP 2026076018AJP-2026076018-A

Abstract

[Problem] To provide a storage structure that can prevent water from getting into electronic devices housed inside an electrical case. [Solution] The electrical case 20 and the lid 30 have a waterproofing means on one end to prevent water that enters between the main case 10 and the electrical case 20 from going to the other end. The presence of a waterproofing means on one end of the electrical case 20 makes it difficult for water that enters between the main case 10 and the electrical case 20 to easily go to the other end, effectively preventing the control board 40 from getting wet. [Selection Diagram] Figure 8

Inventors

田中結衣
佐々木勝

Assignees

株式会社コロナ

Dates

Publication Date: 20260511
Application Date: 20241023

Claims (4)

The main body case contains the drive components, A control board for controlling the aforementioned drive component, A box-shaped electrical case connected to the outer surface of the main body case, with an open side for housing the control board, The electrical case comprises a cover attached to the side surface of the electrical case, which covers the portion from the opening to the connection portion with the outer periphery, and when the electrical case is considered to have one end at the point where it connects to the outer periphery of the main case and the other end at the point furthest from the outer periphery, The electronic device housing structure is characterized in that the electrical case and the lid have a waterproof means on one end that prevents water that has entered between the main case and the electrical case from moving toward the other end.
The aforementioned waterproofing means is The upper end surface of the electrical case has a rib at one end that is separated in the front-rear direction and extends upward, and an inclined portion formed between the ribs at one end that slopes downward toward the outer circumferential surface. The electronic device storage structure according to claim 1, characterized in that the upper end surface of the lid has a claw that is located above the inclined portion and extends downward.
The aforementioned waterproofing means is On the upper end surface of the other end of the aforementioned electrical case, there is an upward-extending rib on the other end side, The electronic device housing structure according to claim 2, characterized in that the claw has a guide mechanism on the other end face that overcomes the other end rib when the lid is removed.
The electronic device housing structure according to claim 3, characterized in that the guide mechanism has a triangular rib with an inclined surface that contacts the other end rib when the lid is removed.

Description

This invention relates to a housing structure for electronic devices such as control boards. Conventionally, in this type of device, a box-shaped electronic component case with an open side for housing an electronic control board was connected to the outer periphery of the main case. A lid was fitted to cover the area from the opening of the electronic component case to the outer periphery of the main case. The electronic component case had one end where it connected to the outer periphery of the main case, and the other end where it was furthest from the outer periphery of the main case. The upper surface of the electronic component case was sloped so that one end was the lowest, and the upper surface of the other end had upward-extending ribs. This prevented water entering between the main case and the electronic component case from reaching the opening and wetting the control board. (For example, Patent Document 1) Patent No. 7451889 This is an external perspective view illustrating an embodiment of the present invention.This is a partial perspective view showing the outdoor unit of the same embodiment with the cover removed from the electrical casing.This is a perspective view illustrating the structure of the electrical case in the same embodiment.This is a perspective view from a different direction than Figure 2, which illustrates the structure of the electrical case in the same embodiment.This is a perspective view illustrating the structure of the lid in the same embodiment.This is a cross-sectional perspective view from a different direction than Figure 5, which illustrates the structure of the lid in the same embodiment.This is an external perspective view showing the right side of the outdoor unit of the same embodiment.This is a cross-sectional view taken along line A-A in Figure 7, with the internal mechanism omitted.This is a cross-sectional view taken along line B-B in Figure 7, with the internal mechanism omitted.This is a front cross-sectional view, with the internal mechanism omitted, illustrating the process of removing the lid from the electrical case in the comparative example.This is a front cross-sectional view showing the removal of the lid from the electrical case in this embodiment, with the internal mechanism omitted. Embodiments of the present invention will be described below with reference to the attached figures. In the figures, Fr indicates the front, Rr the rear, Le the left, Ri the right, Up the top, and Dn the bottom. Refer to Figure 1. 1 is a roughly box-shaped outdoor unit installed outdoors, and is composed of a main body case 10. The main body case 10 houses a compressor, expansion valve, and outdoor fan (not shown), which are drive components, and also has an outdoor heat exchanger connected to refrigerant piping. The outdoor unit 1 is connected to an indoor unit (not shown) installed indoors by refrigerant piping. Alternatively, the main unit case 10 further includes a circulation pump, which is a drive component (not shown), and a water-refrigerant heat exchanger in which a refrigerant heated by a compressor and water sent by the circulation pump exchange heat. The circulation pump drives the heated hot water sent from the water-refrigerant heat exchanger, and piping that sends this hot water to a hot water storage tank (not shown) is connected to the outdoor unit 1. Refer to Figures 1 and 2. A box-shaped electrical case 20, which is long in the vertical direction, is connected and fixed to the right side 11, which is part of the outer periphery of the main case 10, with screws (not shown). The electrical case 20 houses a control board 40, which is an electronic device that controls the drive components, in an opening 20b on the right side. Then, the lid 30 is attached so as to cover the connection between the opening 20b of the electrical case 20 and the right side surface 11. After attaching the lid 30 to the electrical case 20, the lid 30 is secured by inserting a screw 50 into a screw hole 21 at the lower end of the electrical case 20 that is opposite to the screw hole 31 at the lower end of the lid 30, so as to fasten them together. In this embodiment, the electrical case 20 is defined as having one end where it connects to the right side surface 11 of the main case 10, and the other end where it is furthest from the right side surface 11. Next, we will explain the structure of the electrical case 20. Refer to Figures 3 and 4. On one end of the electrical case 20, a waterproof rib 22 is formed, which is separated in the front-rear direction and extends upward. Between the rib 22, a sloping portion 23 is formed, which is located below the upper end surface 20a and slopes downward toward the end, also serving as a waterproof means. On the right side of the sloping portion 23, two recesses 24 are formed, into which the tabs 32 of the lid 30 fit when the lid 30 is attached to the electrical case 20. On the other end of the electrical case 20, a waterproof rib 25 i