JP2840361B2 - Mounting unit for electrical box - Google Patents

Description

The present invention relates to a mounting apparatus for an electrical box housed in a main body of an air conditioner or the like installed at a high place in a house.

(B) Conventional technology Japanese Utility Model Publication No. Sho 62-24180 discloses a structure of an air conditioner installed at a high place in a house.

The air conditioner disclosed in this publication is provided with an inwardly extending flange piece at an opening edge at a lower portion of a main body, and a mounting hole is formed in the flange piece, while an electrical component mounting plate housed in the main body is provided. The end portion is provided with a hook portion that engages with the mounting hole.

Usually, this mounting plate is fixed in the main body with screws, and at the time of service inspection, the hook of the mounting plate is engaged with the mounting hole of the flange piece, and the mounting plate is hung from the main body.

(C) Problems to be Solved by the Invention In such an air conditioner, when looking up at the opening of the main body at the time of service inspection, the engaging portion of the mounting plate is above (shadowed) the flange piece. Therefore, in order to engage the engaging portion of the mounting plate with the engaging hole of the flange piece, it was necessary to move the mounting plate along the flange piece. Therefore, the work may take time.

SUMMARY OF THE INVENTION An object of the present invention is to enable an electrical box to be easily and quickly hooked from a main body installed at a high place in a house.

(D) Means for Solving the Problems In order to achieve this object, the present invention is inserted into a main body which is installed above the ceiling so that the lower surface is located above the ceiling plate, through an opening on the lower surface of the main body. In the electric box mounting apparatus, the electric box is a first box to which an electric component is fixed.
A second member fixed to the first member and slidably attached to the first member, comprising a downward contact piece abutting against an inner wall of the main body, wherein the main body is provided with the electric box. An upwardly-facing engagement piece is provided to lock the contact piece when taken out of the device.

(E) Operation When the electrical box is pulled out from the main body, the downward contact piece of the electrical box is hooked on the upward engaging piece of the main body, and the electrical box is hung from the main body. In this state, the second member can be slid and pulled out downward.

(F) Embodiment In FIGS. 1 to 4, reference numeral 1 denotes a main body of an air conditioner housed behind a ceiling, which is installed, for example, on a ceiling 2 as shown in FIG. Reference numeral 3 denotes a cylindrical flexible duct, one end of which is connected to a cylindrical outlet 4 of the main body 1 and the other end of which is connected to an outlet chamber 6 arranged on a ceiling 5. Reference numeral 7 denotes a suction grill arranged on the ceiling 5, and reference numeral 8 denotes a canvas duct connecting the suction grill 7 and an opening (described later) on the lower surface of the main body. By driving the main body, the room air flows as indicated by the solid arrow.

The external shape of the main body is as shown in FIG. 1, and L-shaped mounting brackets 9 are formed on both left and right side surfaces. And
A hanging bolt 11 (see FIG. 4) fixed to the ceiling is inserted into a hole 10 of the mounting bracket 9, and a nut (not shown) is attached to the hanging bolt 11, whereby the main body 1 is mounted.
Is fixed to the ceiling 2.

Reference numeral 12 denotes a connector for a refrigerant pipe, 13 denotes a main drain port, and 14 denotes an auxiliary drain port. Reference numeral 15 denotes a panel that covers about half of the lower surface of the main body 1. A peripheral edge 16 of the panel 15 is screwed to a flange piece 17 of the main body 1. Reference numeral 18 denotes an opening provided on the lower surface of the main body, which serves as a suction port. Reference numeral 19 denotes an electrical box removably stored through the opening, and reference numeral 20 denotes a fan casing.

The internal structure of the main body is as shown in FIGS. 2 and 3, and reference numeral 21 denotes a partition plate.
And divided into Reference numeral 24 denotes a sirocco fan, which is housed in a fan casing 20. Reference numeral 25 denotes a motor for driving the fan, which is attached to the partition plate 21 via a support 26. The electrical box 19 is housed in this air blower chamber, and its mounting state will be described later. 27 is a heat exchanger, 28 is a drain pump, and this pump 28 is connected to the main drain port (see FIG. 1) 13. Reference numeral 29 denotes a styrene foam drain pan, which is disposed below the heat exchanger 27 and the drain pump.

In the drain pan 29, a rising portion 30 is formed around the drain pan 29. Reference numeral 31 denotes a raised portion, on which the lower surface of the heat exchanger 27 is applied. Reference numeral 32 denotes a concave portion formed on the lower surface of the drain pan 29, and reference numeral 33 denotes a cylindrical projection (handle) extending downward from the concave portion. Two protrusions 33 are provided substantially at the center of the drain pan 29 (see FIG. 2).
33 is assigned to panel 15. Here, for example, the main body 1
When the drain is not mounted horizontally above the ceiling 2 or when the drain pump 28 breaks down, the drain water accumulated in the drain pan 29 may not be sufficiently discharged. At this time, the drain pan 29 may be deformed by the weight of the drain water. However, since the projection 33 is applied to the panel 15, the deformation of the drain pan 29 is suppressed as much as possible.

When the panel 15 is removed from the main body 1, the projections 33 become visible from the main body 1 as shown in FIG. Therefore, the drain pan 29 can be easily removed from the main body 1 by grasping the projection 33 and pulling out the drain pan 29 downward.

FIG. 6 to FIG. 9 show the electrical box stored in the main body 1.
The electric component box 19 includes a first member 35 housed in the main body 1 along one side surface 34 of the main body 1 and a takeout member slidably inserted along a bent piece 36 of the first member 35. (Hereinafter referred to as “second member”) 37 and a third member 38 covering both of these members. Reference numeral 39 denotes a mounting table fixed to the first obtaining member 35, on which a terminal board 40 is mounted.
Reference numeral 41 denotes an outlet, into which a lead wire (not shown) connected to the terminal board 40 is inserted so as to guide the lead wire to the outside of the electrical box 19. Reference numeral 42 denotes a mounting piece obtained by bending the lower side of the first member 35 downward.

Reference numeral 43 denotes a guide member which is welded to the first member 35. Reference numeral 44 denotes a contact piece provided on the upper part of the first member, which is bent downward similarly to the first mounting piece 42. Reference numeral 45 denotes a printed circuit board to which an electric component 46 is attached, which is attached to a vertical plate of the second member 37 via a leg. Reference numeral 54 denotes a second mounting piece in which the lower side of the second member is bent downward. The second member 37 slides with respect to the first member 35 as shown in FIG.

That is, the second member 37 has one side 47 inserted between the guide piece 43 and the first member 35, and the other side 48 abutted on the bent piece 36 of the first member 35. When the second member 37 is slid to the bottom, the cut-and-raised piece 50 of the second member 37 is engaged with the projection 49 of the guide piece 43, thereby preventing the second member 37 from dropping. The width dimension A of the second member 37 is the guide piece.
43, since the width dimension B of the second member 37 is slightly smaller than the width B of the bent member 36, the cut-and-raised piece 50 of the second member 37 is engaged with the projection 49 of the guide piece 43. By turning upward (solid arrow) in FIG. 7 with one side as a fulcrum, the second member 37 can be easily removed.

When the service check of the electrical box 19 having such a configuration is performed, it is performed as described below. First, as shown in FIG. 8, the electrical box 19 is housed in the corner of the main body 1, the upper left is positioned by the projecting piece 52 of the top plate 51 of the main body 1, and the contact piece
44 is applied to the inner wall 53 of one side plate of the main body 1. And a locking piece in which the first mounting piece 42 cuts and raises one side plate of the main body 1.
It is engaged with 55 and fixed with screws 56. The second mounting piece 54 formed on the lower edge of the second member 37 is fixed to the first mounting piece 2 of the first member 35 with a screw 57.

In such a state, if the screw 56 is removed, FIG.
As shown in FIG. 11, the entire electrical box 19 is pulled out below the main body 1, the contact piece 44 is locked by the locking piece 55, and the electrical box 19 is hooked on the main body 1. Here, since the contact piece 44 is bent downward and the locking piece 55 is bent upward, the contact piece 44 is hardly disengaged from the locking piece 55.
Is prevented from falling. And this locked electrical box
If the user removes 19 from the main body 1, it is possible to inspect all the electric components built in the electric box 19.

On the other hand, when the service inspection of only the printed circuit board 45 and the electrical component 46 fixed to the second member 37 among the electrical components built in the electrical component box 19 is performed, FIG.
11 When the screw 57 is removed from the state shown in FIG.
With the 19 suspended, only the second member 37 can be pulled out (see FIGS. 12 and 13). Since only the second member 37 can be further pulled out of the electrical box 19 suspended from the main body 1 as described above, when the main body 1 is disposed above the ceiling 5, the second member 37 faces the room. Then, the printed circuit board 45 and the like can be inspected under the indoor light.
If necessary, the second member 37 can be removed from the first member 35 by the solid arrow in FIG. 7 or the method described above.

After the service check of the electric components is completed, the operation opposite to the above-described operation is performed, and the electric box 19 is incorporated into the main body 1. At this time, since the contact piece 44 of the first member 35 is bent downward, even if the contact piece 44 is slid up along the inner wall 53 of the main body 1, the contact piece 44 makes the inner wall 53 smooth. The electrical box 19 can be smoothly housed in the main body 1 without going out. Further, since the contact piece 44 does not protrude from the upper surface of the electrical box 19, the electrical box 19 can be brought into close contact with the top plate 51 of the main body 1. Thus, the installation space of the electrical box 19 in the main body 1 can be kept small.

(G) Effects of the Invention According to the present invention, temporary fixing of the electrical box can be easily performed in a short time by hooking the contact piece to the engaging piece of the main body, and further, the second member is slid to open the ceiling. By pulling out below, the service inspection work can be performed under the indoor light, and the service inspection time can be shortened.

[Brief description of the drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a perspective view of a main body of the ceiling-mounted air conditioner, FIG. 2 is a longitudinal sectional view of the main body,
FIG. 3 is a cross-sectional view of the main body, FIG. 4 is an explanatory view showing an installed state of the main body, FIG. 5 is a perspective view of a main part showing a state where a panel of the main body is removed, and FIG. FIG. 7 is a perspective view showing an internal structure of an electric box housed in the electric box, FIG. 7 is a perspective view showing a combination state of first and second members constituting the electric box, and FIG. 8 is a front view showing a housed state of the electric box. FIG. 9, FIG. 9 is a side view showing the storage state of the electrical box, FIG. 10 is a front view showing the suspended state of the electrical box, FIG. 11 is a side view showing the suspended state of the electrical box, and FIG. FIG. 13 is a front view showing a suspended state of the second member, and FIG. 13 is a side view showing a suspended state of the second member. 1 ... body, 18 ... opening, 19 ... electrical box, 44 ... contact piece, 55 ... engagement piece.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Isao Moriyama 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Yukio Aizawa 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Inside Yo-Electric Co., Ltd. (72) Inventor Kunio Kayama 2--18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (56) References Open-ended 59-143209 (JP, U) Open-ended 59- 159982 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) H05K 5/02

Claims (1)

(57) [Claims] 1. A mounting apparatus for an electrical box, which is inserted through a lower opening of a main body into a main body which is installed above the ceiling so that a lower surface is located above a ceiling plate, wherein the electric box includes:
The main body, comprising: a first member to which an electric component is fixed; and a second member to which the electric component is fixed and slidably attached to the first member, wherein the main body includes a downward contact piece applied to an inner wall of the main body. A mounting device for mounting the electrical box, wherein the electrical box is provided with an upwardly engaging piece that locks the contact piece when the electrical box is taken out of the main body.