JPH0440100Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a frameless air conditioner casing that has excellent airtightness and can maintain robust assembly strength.

(Prior Art) In the case of air conditioners that require a high level of airtightness, a method is generally adopted in which a frame structure is used and a casing outer panel that is attached to the outside of the frame is sealed.

In such a structure, as shown in FIGS. 6 and 7, the casing outer plates P are overlapped by a suitable width, for example, 2 to 3 cm, at the end of the flat plate and joined, and a packing 6' is interposed in this overlapping part. After that, connection means that are tightened with screws are often used.

(Problems that the invention aims to solve) By the way, using a frame structure means that thick steel is used, which increases the weight of the casing and increases the cost.Furthermore, when flat plates are stacked on top of each other, the plates tend to bend. There were design problems, such as the difficulty of sealing reliably, the distortion that resulted in an unsightly appearance, and the fact that the cuts at the edge of the board were visible, detracting from the aesthetics.

In response to the fact that the conventional products have various practical problems, the present invention was made to improve the casing, and in particular, the casing is made of sheet metal without a frame, but the joints are removed. By bending it, it functions as a reinforcing member, and by making the contact with the intervening packing more reliable, it is lightweight and strong, and the sealing performance is perfect, so that the aesthetic appearance can be sufficiently maintained. The purpose of the invention is to reduce costs in conjunction with this, and thereby improve both airtightness and economic efficiency.

(Means for Solving the Problems) As is clear from the drawings showing the embodiments, the present invention is such that the air conditioner casing is made of frameless sheet metal, and the horizontal plate 7 and the lower right angle A top plate 1 consisting of a hanging edge 8 bent over, an upright plate 9
Both the front and rear plates 2, 3 are made up of an inward folded edge 10 which is bent at a right angle on the inside from the upper, left and right three-sided edges, and a projecting piece 11 which is further bent at a right angle on the outside with the same bending allowance as the hanging edge 8. , an inward folded edge 13 bent from the upright plate 12 and its upper edge at a right angle on the inside with the same bending margin as the folded edge 10 of the front plate 2 and rear plate 3, and further bent at a right angle on the outside in the same manner as the hanging edge 8. Left and right side plates 4 and 5, top plate, consisting of a protruding piece 14 bent at the same bending distance and an inward bent edge 15 bent at right angles inward from the front and rear edges of the upright plate 12 with the same bending allowance as the protruding piece 14 1 and the upper inward folded edges 10, 13 of both the front and rear plates 2, 3 and the left and right side plates 4, 5;
Inward bent edges 10 on both left and right sides of both rear plates 2 and 3
and the front of the upright plate 12 on the left and right side plates 4 and 5.
It has square bar-shaped packings 6, 6, which are compressed and clamped between the two rear edges, and the hanging edges 8 correspond to the thickness of the packing 6 under compression, while the front - On each of the folded edges 10 of the rear plates 2 and 3, there is a gap slightly wider than the width of the packing 6 from the corner of the upright plate 9, and on both the left and right side plates 4, An appropriate number of screw holes 16 are provided in the upper folded edge 13 of the top plate 1 at locations slightly wider than the width of the packing 6 from the corner on the upright plate 12 side. Screw insertion holes 17 are provided at locations corresponding to the screw holes 16 in the horizontal plate 7 and the upright plates 12 of the left and right side plates 4 and 5.

(Function) Right angle alignment between the top plate 1 and both the front and rear plates 2 and 3 and the left and right side plates 4 and 5, and the right angle alignment between the front and rear plates 2 and 3 and the left and right side plates 4 and 5 All of the sections are hollow square prisms, and square rod-shaped gaskets 6 are interposed in the hollow parts.The presence of the square rods at the corners provides a solid structure that does not easily cause distortion and maintains normal operation as designed. It can maintain a good external shape.

Furthermore, since the packing 6 is compressed and clamped within the hollow portion, high sealing performance is maintained, and the cut ends of each plate and the packing 6 are shaped so that they cannot be seen from the outside at all.

(Example) Hereinafter, an example of the present invention will be described based on the accompanying drawings.

Figures 1 to 5 respectively show the main parts of an air conditioner casing according to an example of the present invention. 4 and a right side plate 5, and square rod-shaped hard rubber gaskets 6 are compressed and sandwiched at each right-angle matching portion to form a highly airtight cube.

The top plate 1 has a rectangular horizontal plate 7 and hanging edges 8 bent downward at right angles from its four edges.

This top plate 1 has a gasket 6 attached to it in contact with the corners of the four edges of the horizontal plate 7 and the hanging edge 8, and the horizontal plate 7 is located inwardly with the portion in contact with the gasket 6 removed. An appropriate number of screw insertion holes 17 are provided in the holder.

Next, the front plate 2 and the rear plate 3 have a rectangular upright plate 9,
An inward folded edge 10 is formed by bending the upper edge, the left edge, and the right edge at a right angle toward the inside, and the bending margin (width) is formed by bending the inner folded edge 10 outward at a right angle in the opposite direction. It has a projecting piece 11 having the same size as the hanging edge 8.

The front and rear plates 2 and 3 are fitted with a gasket 6 in contact with the folded edge 10, and in the assembled state, the upper folded edge 10 corresponds to the screw insertion hole 17 of the top plate 1. Screw holes 16 are provided at predetermined locations, and screw holes 16 are also provided on both the left and right bent edges 10 in the same manner as the upper bent edges 10.

On the other hand, the left side plate 4 and the right side plate 5 include a rectangular upright plate 12 and an inward folded edge 13 which is bent inward from its upper edge at a right angle to make the bending margin the same size as the inward folded edge 10. , and a protruding piece 14 which is bent outward from the inwardly bent edge 13 at right angles in the opposite direction to make the bending allowance the same as the hanging edge 8 and the protruding piece 11, and a protruding piece 14 that stands upright with the same bending allowance as this protruding piece 14. Board 12
It has an inward folded edge 15 which is bent inward at right angles from two sides of the front edge and the rear edge.

The left and right side plates 4 and 5 are brought into contact with the inwardly folded edge 13, and also in contact with the corner of the upright plate 12 and the inwardly folded edge 15, and the gasket 6 is fitted against it. The inwardly bent edge 13 and the upright plate 12 are provided with screw screws at predetermined locations on the inwardly bent edge 13 that correspond to the screw insertion holes 17 of the top plate 1 in the assembled state. Holes 16 are provided, and screw insertion holes 17 are provided at predetermined locations on the upright plate 12 corresponding to the screw holes 16 provided in the folded edges 16 of both the front and rear plates 2 and 3.

Note that both the front and rear ends of the inwardly folded edge 13 and the front and rear ends of the projecting piece 14 are cut to a predetermined length to be slightly shorter than the depth dimension of the upright plate 12, as shown in FIG. This is done by cutting the necessary amount to avoid overlapping the upper inward folded edge 10 of both the front and rear plates 2, 3 which are assembled at right angles, and the protrusion 11 connected thereto. As shown, it is now possible to butt them together so that there is no gap.

The relationship between the horizontal plate 7, the vertical plate 9, and the vertical plate 12 is as follows.

That is, when the width W and depth D of the horizontal plate 7 are used as a reference (see Fig. 2), the width of the upright plate 9 is W-
2W′, where W′ is approximately equal to the width of the packing 6,
On the other hand, the depth of the upright plate 12 is D+2L, where L is approximately equal to the length by which the folded edges 10 of both the front and rear plates 2 and 3 protrude from the top plate 1 in the front and rear directions, respectively.

As a matter of course, the upright board 9 and the upright board 12 have the same length.

The casing having the above-mentioned structure has a top plate 1, front and rear plates 2 and 3, and left and right side plates 4 and 5 assembled at right angles, and square rod-shaped packings 6 are interposed at each right angle joint. By inserting the screw through the opposing screw insertion hole 17 and the screw screw hole 16 and tightening the screw, the assembled state as shown in FIGS. 3 and 4 is achieved, and each right-angle matching part The packing 6 is sandwiched under compression to form a hollow rectangular cylindrical part, and since this hollow rectangular cylindrical structure functions as a beam as a strength member, it is strong without being bent or distorted. It can be assembled into

In addition, the packing 6 cannot be seen from the outside at all, and moreover, the packing 6 covers the entire width of each board 1 to 5.
High sealing performance due to surface contact.

Furthermore, since the cut edges at the edges of each of the plates 1 to 5 are completely invisible from the outside, the casing has an appearance that closely resembles a casing with an all-in-one structure.

Although not shown, both the front and rear plates 2 and 3 and the left and
The lower end edges of the right side plates 4 and 5 are generally screwed to the bottom frame or the like.

(Effect of the invention) The invention has a hanging edge 8 of the top plate 1, both front and rear plates 2,
The bending allowances of the protruding pieces 11 of 3, the protruding pieces 14 of the left and right side plates 4 and 5, and the folded edges 15 play an important role in determining the degree of compression that affects the sealing performance of the packing 6. Since it also functions as a wall material surrounding the gasket 6, the sealing performance at the right angle joint is dramatically and stably improved.

Furthermore, the gasket 6 is completely invisible from the outside, giving it a good appearance, and since it is not directly exposed to the outside air, deterioration is less likely to occur, leading to a longer life.

On the other hand, since the right angle joints form a hollow rectangular tube shape, this serves as a reinforcing body as a beam, and as a result, a casing with high assembly strength and mechanical strength can be obtained while omitting a frame, and is less prone to bending or distortion. It is possible to maintain the appearance and appearance as designed.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of a corner part according to an embodiment of the present invention, an enlarged view of part A in Fig. 2, a partial perspective view of the fully assembled state, Figs.
The figure is a sectional view taken along the X-X arrow line and the Y-Y arrow line in Figure 2, Figure 5 is an enlarged plan view of the joint between the front plate and the right side plate with the top plate removed in Figure 1, and FIG. 6 is a partial perspective view of a conventional air conditioner casing, and FIG. 7 is a sectional view taken along the Z-Z arrow line in FIG. 6. 1...Top plate, 2...Front plate, 3...Rear plate, 4...
Left side plate, 5...Right side plate, 6...Patzkin, 7...
Horizontal board, 8... hanging edge, 9... upright board, 10...
Inward folded edge, 11... Protruding piece, 12... Upright plate, 13
...Inward folded edge, 14...Protrusion piece, 15...Inward folded edge, 16...Screw hole, 17...Screw insertion hole.

Claims (1)

[Scope of utility model registration request] It is made of frameless sheet metal, and consists of a horizontal plate 7 and a hanging edge 8 bent at right angles below from its four edges, and an upright plate 9 bent at right angles inward from its upper, left, and right three edges. Both the front and rear plates 2, 3 are made up of an inwardly bent edge 10 and a protrusion 11 bent at a right angle on the outside with the same bending allowance as the hanging edge 8; an upright plate 12 and the front plate 2, the rear plate from its upper edge; An inward folded edge 13 bent at a right angle on the inside with the same bending allowance as the inward folded edge 10 of No. 3, a protruding piece 14 bent at a right angle on the outer side with the same bending allowance as the hanging edge 8, and the same bending allowance as the protruding piece 14. Inwardly bent edges 15 are bent at right angles inward from the front and rear two edges of the upright plate 12.
The left and right side plates 4, 5, the four edges of the horizontal plate 7 on the top plate 1, the front and rear plates 2, 3, and the upper inward folded edges 10, 13 on the left and right side plates 4, 5.
Also, between the two left and right bent edges 10 of both the front and rear plates 2 and 3 and the front and rear two edges of the upright plate 12 of the left and right side plates 4 and 5. It has square rod-shaped packings 6, 6, which are compressed and clamped, and the hanging edge 8 corresponds to the thickness of the packing 6 under compression, while each of the front and rear plates 2, 3 The inwardly folded edge 10 has a space slightly wider than the width of the packing 6 from the corner of the upright plate 9, and also at the inwardly folded edge 13 above the left and right side plates 4 and 5. is the packing 6 from the corner of the upright plate 12.
An appropriate number of screw holes 16 are provided at locations slightly wider than the width of the screw holes 16 in the horizontal plate 7 of the top plate 1 and the upright plates 12 of the left and right side plates 4 and 5. An air conditioner casing characterized in that a screw insertion hole 17 is provided at a location corresponding to a screw hole 16.