JPH0894117A - Casing structure of top suspended type air conditioner - Google Patents

Abstract

PURPOSE: To obtain a fitting structure of a decorative side plate which can withstand sufficiently a load action on the decorative side plate from various directions. CONSTITUTION: Regarding a casing structure of a top suspended type air conditioner which is equipped with a main body casing 1 constituting the outer wall of a main body and with decorative side plates 2 made of synthetic resin and fitted to the opposite sides of the main body casing l and is so designed that the decorative side plates 2 can be fitted temporarily by engagement of pawl pieces 23 provided monolithically on the decorative side plates 2 in projection therefrom with engagement holes 17 formed on the main body casing 1 side, openings for the engagement are formed in casing side plates 7 in the main body casing 1, while first engaging ribs each engaging from above with the edge of the opening for the engagement and second engaging ribs 22 being brought into contact with the casing side plates 7 respectively are formed integrally with the decorative side plates 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a casing structure for a ceiling-mounted air conditioner, and more particularly to a combined structure of a main body casing and a decorative side plate in a ceiling-mounted air conditioner.

[0002]

2. Description of the Related Art For example, in the case of a ceiling-mounted air conditioner, FIG.
As shown in FIG. 1, it has a thin box-shaped main body casing 1 containing various devices such as a fan and a heat exchanger, and a synthetic resin decorative side plate 2 that covers both sides of the main body casing 1. The side plate 2 and the main body casing 1 generally have the following coupling structure.

That is, as shown in FIG. 6, engagement holes 17 and 17 are formed in the casing bottom plate 8 and the casing side plate 7 of the main body casing 1, and the engagement holes 17 and 1 are formed.
The decorative side plate 2 is screwed to the main body casing 1 in a temporarily assembled state by engaging the claw pieces 23, 23 integrally projecting from above and below the decorative side plate 2 at appropriate positions.

[0004]

However, in the case of the conventional connecting structure as described above, when a load is applied to the decorative side plate 2 from various directions (for example, A, B, C directions) when the package is dropped. , The nail piece 2 along with the deformation of the decorative side plate 2
From the place where the load is concentrated on 3, 23, the claw pieces 23, 2
No. 3 breakage or whitening (that is, strength reduction) occurs. When the nail pieces 23, 23 are broken or whitened as described above, they cannot be shipped as a product, which causes a problem that the makeup side plate 2 must be replaced.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a mounting structure for a decorative side plate that can sufficiently withstand a load action on the decorative side plate from various directions. .

[0006]

In the basic constitution of the present invention, as means for solving the above-mentioned problems, a main body casing constituting an outer wall of the main body and a synthetic resin decorative side plate attached to both sides of the main body casing. Of a ceiling-mounted air conditioner, which is provided with a claw piece integrally projecting from the decorative side plate and an engaging hole formed on the main body casing side so that the decorative side plate can be temporarily assembled. In the casing structure, while forming an engagement opening in a casing side plate of the main body casing, a first engagement rib that engages with the decorative side plate from above with respect to a rim of the engagement opening,
A second engaging rib that abuts against the casing side plate is integrally formed.

In the basic structure of the present invention, a stepped portion having a size equivalent to the thickness of the bottom inner edge of the decorative side plate is formed on the lateral outer edge of the casing bottom plate in the main body casing, and the stepped portion is formed with respect to the stepped portion. It is preferable to engage the inner edge of the bottom of the decorative side plate from below in order to improve the strength against the load applied to the bottom of the decorative side plate and facilitate the jointing of the bottom of the decorative side plate and the casing bottom plate.

Further, in the basic structure of the present invention, the engagement opening is also used as an adjustment window for adjusting the height of the suspension bolt for suspending the main body casing from the ceiling. It is preferable in that the combined opening can be effectively used.

[0009]

In the basic configuration of the present invention, the following actions can be obtained by the above means.

That is, even when a load is applied from the side, the upper side, or the lower side to the decorative side plate when the package is dropped, the engagement between the first engagement rib and the engagement opening edge and the second engagement rib.
The contact between the engaging rib and the casing side plate can improve the strength of the decorative side plate.

Further, in the basic structure of the present invention, the side outer edge of the casing bottom plate of the main body casing is
When a stepped-down portion having the same thickness as the thickness of the bottom inner edge of the decorative side plate is formed and the bottom inner edge of the decorative side plate is engaged with the stepped-down portion from below, the bottom side of the decorative side plate is dropped when the package is dropped. The strength is improved when a load is applied, and the joints of the decorative side plates can be easily aligned by simply engaging the bottom inner edge with the stepped-down portion of the casing bottom plate from below.

Further, in the basic structure of the present invention, when the engaging opening is also used as an adjusting window for adjusting the height of the suspension bolt for suspending the main body casing from the ceiling, The height of the suspension bolt can be easily adjusted using the engagement opening.

[0013]

According to the present invention, the strength of the decorative side plate can be improved by the engagement between the first engaging rib and the engaging opening mouth edge and the contact between the second engaging rib and the casing side plate. Even if a load is applied to the decorative side plate from the side, upward or downward when the package is dropped, load concentration is less likely to occur on the claw pieces that connect the main body casing and the decorative side plate, and the claw pieces may be broken. Or whitening (that is, decrease in strength)
There is an excellent effect that can prevent.

The above-mentioned improvement in the strength of the decorative side plate eliminates the need for strict packing, and has a secondary effect that the packing cost can be reduced.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

As described in the section of the prior art, the ceiling-mounted air conditioner of the present embodiment has a thin box-shaped main body casing 1 in which various devices (not shown) such as a fan and a heat exchanger are incorporated, It has a synthetic resin decorative side plate 2 that covers both sides of the main body casing 1 (see FIG. 5). Reference numeral 3 is a suction grill, and 4 is an air outlet.

As shown in FIG. 1, the main body casing 1 has a casing top plate 5 constituting an upper surface, a casing back plate 6 constituting a rear surface, casing side plates 7 and 7 constituting both side surfaces, and a bottom surface. It is composed of a casing bottom plate 8 constituting the casing. In the case of the present embodiment, the casing top plate 5 and the casing back plate 6 are integrally formed by sheet metal, and the casing side plate 7 and the casing bottom plate 8 are separate components made of sheet metal.

A pair of notched recesses 9, 9 are formed at the casing side plate 7 side end of the casing top plate 5, while the casing top plate 5 side end of each casing side plate 7 is provided with the casing. Engaging openings 10 and 10 corresponding to the notched recesses 9 and 9 on the top plate 5 side are formed in notched shapes, respectively.

The notched recesses 9 and 9 and the engagement openings 10 and 10 are brought into communication with each other when the main casing 1 is completely assembled, and are fixedly attached across the casing top plate 5 and the casing side plate 7. It is covered with a support fitting 11. The support fitting 11 has L-shaped engagement groove portions 12a, 12 at positions corresponding to the cutout recesses 9, 9.
and a bolt which is continuous with one end of each of the engaging groove portions 12a and is located at a position corresponding to the engaging openings 10 and 10 and has substantially the same shape as the engaging openings 10 and 10. Insertion locking portions 12 and 12 are formed. Each bolt insertion locking portion 12 is for engaging and supporting the engaging groove portion 12a after the suspension bolt 13 for suspending the air conditioner on the ceiling is inserted from the opening portion 12b. The engagement opening 10 and the opening 12b are
It is also used as an adjustment window when adjusting the height of the hanging bolt 13. Needless to say, such insertion locking of the hanging bolt 13 and height adjustment are performed with the decorative side plate 2 removed. Reference numeral 14 is the cutout recess 9
Also, a synthetic resin cap fitted over the engagement opening 10 is provided to block the notch recess 9 and the engagement opening 10 from the inside of the main body casing 1. Reference numeral 15 is a notch formed in the casing side plate 7 for introducing a pipe.

As shown in FIG.
As shown in FIG. 1, a rising wall 16 serving as a connecting portion with the casing side plate 7 is integrally formed.
An engagement hole 17 having a horizontally long quadrangle is formed at a position in front of 6. Further, on the lateral outer edge of the casing bottom plate 8,
A step drop portion 18 having the same size as the wall thickness of the bottom inner edge 2a of the decorative side plate 2 is formed.

On the other hand, the decorative side plate 2 is in the shape of a dish having the same outer shape as the side surface of the main body casing 1, and the upper end portion thereof is a flat plate portion 2b abutting against the casing side plate 7. ing. In addition, an engaging protrusion 20 that engages from above with a receiving portion 19 formed at the front end of the side surface of the main body casing 1 is integrally formed at the front end of the flat plate portion 2b.

On the inner surface of the flat plate portion 2b of the decorative side plate 2, engagement openings 10, 10 on the casing side plate 7 side are formed.
C-shaped first protruding inward at a position corresponding to
Engaging ribs 21 and 21 are integrally provided so as to project. The first of each
The engagement rib 21 engages from above with respect to the rim of each of the engagement openings 10 (specifically, the cap 14 in the case of the present embodiment) when the decorative side plate 2 is attached to the side surface of the main body casing 1. (See FIG. 4). In addition, second engaging ribs 22, 22 that abut the casing side plate 7 are integrally provided on the inner surface of the recess 2c of the decorative side plate 2 so as to integrally project. In the case of the present embodiment, each of the second engaging ribs 22 is composed of a pair of rectangular convex pieces continuous with the first engaging rib 21, and the decorative side plate 2 is attached to the side surface of the main body casing 1. In this state, the casing side plate 7 (specifically, the support fitting 11 in the case of the present embodiment) is brought into contact with the casing side plate 7 (see FIG. 4).

Further, on the inner surface of the recess 2c of the decorative side plate 2, a claw piece 23 projecting inward is integrally provided at a position corresponding to the engagement hole 17 on the casing bottom plate 8 side. As shown in FIG. 3, the claw piece 23 has a shaft portion 23a.
And a claw portion 23b formed at the tip of the shaft portion 23a, the claw portion 23b of the claw piece 23 in the state where the decorative side plate 2 is attached to the side surface of the main body casing 1 has an engaging hole 17 on the casing bottom plate 8 side. The decorative side plate 2 can be temporarily assembled by being locked to the rear side edge 17a.
Further, the claw piece 23 also has an effect of preventing outward expansion of the decorative side plate 2 due to its engaging force. Reference numeral 24 denotes a ridge formed on the inner surface of the decorative side plate 2 so as to engage with the cutout portion 15 in the casing side plate 7. A screw fastening rib 25 formed at the front end of the ridge 24 is provided on the casing side plate. By attaching screws to 7, the decorative side plate 2 can be attached to the main body casing 1.

Next, the procedure for attaching the decorative side plate 2 will be described. The decorative side plate 2 shown in FIG. 1 is erected and the engaging projection 20 of the decorative side plate 2 is engaged with the receiving portion 19 of the main body casing 1. While the claw portion 23b of the claw piece 23 is inserted into the engagement hole 17 on the casing bottom plate 8 side and then the decorative side plate 2 is moved rearward, the claw portion 23b of the claw piece 23 is located at the rear side opening of the engagement hole 17. The bottom inner edge 2a of the decorative side plate 2 is engaged with the stepped portion 18 of the casing bottom plate 8 from below while being locked to the edge 17a (see FIGS. 2 and 3). Under this condition, when the ribs 25 for screwing on the decorative side plate 2 are screwed to the casing side plate 7, the mounting of the decorative side plate 2 is completed (see the chain line in FIG. 1). The removal of the decorative side plate 2 is performed in the reverse order of the above (that is, the screw is removed, the claw piece 23 is pulled out, and the engaging projection 20 is removed).

With the decorative side plate 2 attached in this manner, the bottom inner edge 2a of the decorative side plate 2 is engaged with the stepped-down portion 18 of the casing bottom plate 8 from below, so that the casing bottom plate 8 and the decorative side plate 2 are joined together. And the first engaging rib 21 on the decorative side plate 2 side engages from above with the rim of the engaging opening 10 on the casing side plate 7 side and the second engaging side on the decorative side plate 2 side. The mating rib 22 is brought into contact with the casing side plate 7.

Therefore, the step-down portion 18 of the casing bottom plate 8
Engagement of the bottom inner edge 2a of the decorative side plate 2 with the first engagement rib 2
1 by the engagement of the engaging opening 10 with the rim of the engaging opening 10 and the contact of the second engaging rib 22 with the casing side plate 7 in the A, B, C directions acting on the decorative side plate 2 (in other words, downward, side). On the other hand, the strength against a load from above) is significantly improved. That is, when the package is dropped, even if the loads from the three directions described above act on the decorative side plate 2, the load concentration occurs on the claw piece 23 that connects the main body casing 1 and the decorative side plate 2. As a result, the nail piece 23 can be prevented from being broken or whitened (that is, the strength is reduced).

The invention of the present application is not limited to the configuration of the above-described embodiment, and it goes without saying that the design can be appropriately changed without departing from the scope of the invention.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a main part of a casing structure of a ceiling-mounted air conditioner according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an engaging portion between a claw piece and a main body casing in a casing structure of a ceiling-mounted air conditioner according to an embodiment of the present invention.

FIG. 3 is a partial sectional view taken along the line III-III in FIG.

FIG. 4 is a cross-sectional view showing a positional relationship between first and second engagement ribs and an engagement opening in a casing structure for a ceiling-mounted air conditioner according to an embodiment of the present invention.

FIG. 5 is a perspective view showing a main part of a general ceiling-mounted air conditioner.

FIG. 6 is a cross-sectional view showing a connecting portion between a decorative side plate and a main body casing in a conventional ceiling-mounted air conditioner casing structure.

[Explanation of symbols]

1 is a main body casing, 2 is a decorative side plate, 2a is a bottom inner edge,
7 is a casing side plate, 8 is a casing bottom plate, 10 is an engaging opening, 13 is a hanging bolt, 17 is an engaging hole, 18 is a stepped-down portion, 21 is a first engaging rib, 22 is a second engaging rib, Two
3 is a nail piece.

Claims (3)

[Claims] 1. A main body casing forming an outer wall of the main body, and synthetic resin decorative side plates attached to both sides of the main body casing, wherein claw pieces integrally projecting from the decorative side plate and the main body casing side are formed. A casing structure of a ceiling-mounted air conditioner capable of temporarily assembling a decorative side plate by engaging with a formed engaging hole, wherein an engaging opening is formed in the casing side plate of the main body casing. ,
In the decorative side plate, a first engaging rib that engages with the rim of the engaging opening from above and a second engaging rib that abuts against the casing side plate are integrally formed. The casing structure of the ceiling-mounted air conditioner. 2. A stepped-down portion having a size equal to the thickness of the bottom inner edge of the decorative side plate is formed at a lateral outer edge of the casing bottom plate in the main body casing, and the bottom portion of the decorative side plate is formed with respect to the stepped-down portion. The casing structure for a ceiling-mounted air conditioner according to claim 1, wherein the inner edge is engaged from below. 3. The engagement opening is also used as an adjustment window when adjusting the height of a suspension bolt for suspending the main body casing with respect to the ceiling. The casing structure for a ceiling-mounted air conditioner according to claim 1.