JP2000329369A - Ceiling-buried air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ceiling-buried air conditioner which is constituted to sufficiently secure the laying space of wiring, etc., in an electrical equipment box and, at the same time, to fix a bell-mouth, the electrical equipment box, and electrical equipment cover with structures which are advantageous in cost. SOLUTION: A bell-mouth is vertically divided into first and second bell mouths and an opening which is faced to the side wall 9a of an electrical equipment box 9 and an electrical equipment cover 10 is provided in the second bell-mouth. The opening is blocked with the cover 10 and an auxiliary side wall 9c which is formed by extending the lower part of the side wall 9a so that the lower part may continue to the cover 10 and a second threaded section 12' having a versatile nut (f) is provided in the extended section of the electrical equipment box. On the other hand, a fixing section 7a having the second passing hole 7b corresponding to the second threaded section 12' is provided on the first bell-mouth 7 and the bell-mouth 7 and electrical equipment box are fixed to each other by screwing a screw (e) passed through the hole 7b in the threaded section 12'.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-ceiling type air conditioner, and more particularly, to a method for securing a sufficient space for wiring and the like in an electrical component box, and at the same time, a bell mouth and an electrical component. The present invention relates to a structure in which a product box, an electrical component box, and an electrical component cover can be fixed with a cost-effective structure.

[0002]

2. Description of the Related Art As shown in FIG. 9, for example, a conventional ceiling-mounted air conditioner has a suction grill having a suction opening 2 in the center at a bottom opening of a case body 1 embedded in the ceiling. A decorative panel 4 having a blow-out port 3 around the blower 5 and a heat exchanger 6 in an air passage connecting the suction port 2 and the blow-off port 3;
Is provided with a bell mouth 7 'inside the box, and an electrical component box 9 covered by an electrical cover 10 is provided outside the bell mouth 7'.

However, since the electrical component box 9 has a side wall 9a located outside the bell mouth 7 ', there is a problem that it is difficult to secure a sufficient space for wiring and the like inside. Was.

[0004] The electrical cover 10 is the same as the electrical cover.
The screw e inserted through the insertion hole provided in the screw 10 is screwed to the screw portion 12 provided in the electrical component box 9, but the screw portion 12 is integrally molded with an insert nut or the like. Due to the configuration, there is a problem that the molding cost is increased.

[0005]

SUMMARY OF THE INVENTION In view of the above problems, in the present invention, it is possible to secure a sufficient space for wiring and the like in an electrical component box, and at the same time, to use a bell mouth, an electrical component box, and an electrical component. It is an object of the present invention to provide a ceiling-embedded air conditioner capable of fixing a box and an electrical cover with a structure advantageous in cost.

[0006]

According to the present invention, in order to solve the above-mentioned problems, a suction grille having a suction opening in the center is provided at a bottom opening of a case body buried in a ceiling, and a blowing grill is provided around the opening. A decorative panel with an outlet is installed, and a blower and a heat exchanger are provided in an air passage connecting these inlets and outlets, and a bell mouth is provided inside the inlet and detachable outside the bell mouth. In the ceiling-mounted air conditioner provided with an electrical component box covered by an electrical component cover, the bell mouth is constituted by a first bell mouth and a second bell mouth divided vertically, and the second bell mouth is provided. The mouse is provided with an opening facing the lower part of the side wall of the electrical component box and the electrical cover, and extends the lower part of the side wall so as to be continuous with the electrical cover and the electrical cover. Extended by the department A first screw portion provided with a general-purpose nut in the electrical component box is provided while the auxiliary component side is closed by an auxiliary side wall. A first insertion hole is provided in the electric cover corresponding to the screw portion, and the electric cover is removably engaged with the auxiliary side wall by the engaging portion, and a screw inserted through the first insertion hole is provided. The electrical component cover is attached to the electrical component box by being screwed to the first screw portion.

Further, the engaging portion includes opposing step portions provided on the auxiliary side wall and the electric device cover, and the auxiliary side wall and the electric device cover are joined by the same step portion without any gap. It has a configuration.

[0008] Further, the engaging portion includes an engaging hole provided in the auxiliary side wall and an engaging piece provided in the electric equipment cover, and these engaging pieces are engaged with the engaging hole. Thereby, the auxiliary side wall and the electrical cover are joined without any gap.

Further, the first screw portion has a first through hole provided in the electrical component box, and a pair of first locking members erected on the rear peripheral edge of the first through hole so as to face each other. It comprises a claw and a nut locked by the first locking claw with the first through hole facing.

[0010] A pair of first holding pieces that stand adjacent to the first locking claw, guide the nut, and hold the side portion thereof are provided upright on the rear peripheral edge of the first through hole. The configuration is as follows.

[0011] Further, the first holding piece is formed in the electrical component box in a flat or substantially rectangular shape in cross section corresponding to the outer shape of the nut.

[0012] Further, an inclined portion for guiding a side portion of the nut is provided at a distal end portion of the first holding piece.

In addition, a decorative panel having a suction grille having a suction opening in the center and a blowout opening is mounted around the opening grill at the bottom opening of the case body buried in the ceiling. A ceiling-mounted type in which a blower and a heat exchanger are provided in an air passage connecting the outlet, a bell mouth is provided inside the suction port, and an electrical component box covered by an electrical cover is provided outside the bell mouth. In the air conditioner, the bell mouth is composed of a first bell mouth and a second bell mouth divided vertically, and the second bell mouth includes a lower portion of a side wall of the electrical component box and the electrical component cover. Providing an opposing opening, closing the opening with the electrical cover and an auxiliary sidewall formed by extending a lower portion of the side wall with an extension so as to be continuous with the electrical cover; Box extension While the second threaded portion provided with a general-purpose nut is provided, the first bell mouth is provided with a fixing portion provided with a second insertion hole corresponding to the second threaded portion, and the screw inserted through the second insertion hole is provided. Is screwed to the second screw portion to fix the first bell mouth and the electrical component box to each other.

[0014] The second screw portion is formed with a second through hole provided in the extension portion, and a pair of second locking members erected on the rear peripheral edge of the second through hole so as to face each other. It comprises a claw and a nut locked by the second locking claw facing the second through hole.

In addition, a pair of second holding pieces that stand adjacent to the second locking claw, guide the nut, and hold the side portion thereof are provided upright on the rear peripheral edge of the second through hole. The configuration is as follows.

Further, the second holding piece is formed in a continuous manner in a flat shape or a substantially rectangular shape in cross section on the extending portion corresponding to the outer shape of the nut.

[0017] In addition, an inclined portion for guiding a side portion of the nut is provided at a tip portion of the second holding piece.

Further, a vent hole is provided in the electric component box on the side of the blower and the electric component cover.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below as examples based on the attached drawings. FIG. 1 and FIG.
As shown in FIGS. 3 (A) to 3 (C) and FIGS. 4 to 8, reference numeral 1 denotes a case body of a ceiling-embedded air conditioner buried in a ceiling, and 4 denotes a case body. 1, a decorative panel having a suction grille constituting a suction port 2 in the center and a blowout port 3 around the periphery thereof, and a decorative panel 5 provided in an air passage connecting the suction port 2 and the blowout port 3. 6 is a heat exchanger, 6 is a heat exchanger, 7 and 8 are provided inside the suction port 2, and are a bell mouth composed of a first bell mouth and a second bell mouth divided vertically, and 9 is the bell mouth 7 and 8 thereof. Is an electrical component box provided outside the electronic component and covered by the electrical component cover 10.

The bell mouth is composed of the first bell mouth 7 and the second bell mouth 8 which are vertically divided as described above, and the second bell mouth 8 is provided with the electrical component box 9.
A lower portion of the side wall 9a and an opening facing the electric cover 10 are provided, and the opening is formed by the electric cover 10 and the lower portion of the side wall 9a so as to be continuous with the electric cover 10. The auxiliary side wall 9c is extended by the auxiliary side wall 9c, and the auxiliary side wall 9c and the electric component cover 10 are provided with an engaging portion which can be disengaged and described later, while the electric component box 9 is provided with a general-purpose nut f. The first screw portion 12 provided is provided with a first insertion hole 10a in the electrical cover 10 corresponding to the first screw portion 12, and the electrical cover 10 is connected to the auxiliary side wall 9c by an engagement portion described later. The electrical component cover 10 is attached to the electrical component box 9 by removably engaging the screw e inserted through the first insertion hole 10a into the first screw portion 12. As a result, the lower end of the blower 5 is connected to the upper side of the 9a and will be able to pivot freely accommodated between the first bell mouth 7, also, the first bell mouth 7 and the second bell mouth 8
Outside of the box, the side wall 9a of the electrical component box 9 is not arranged, and a structure is provided in which a routing space A for wiring and the like as shown in FIG. Further, a screw e inserted through the first insertion hole 10a is screwed to the first screw portion 12 having the general-purpose nut f, which is inexpensive, and the electrical cover 10 is attached to The structure is such that it is attached to the electrical component box 9.

The auxiliary side wall 9c and the electrical component cover 10
An engaging portion that removably engages the auxiliary side wall 9c and the opposing step portion a provided on the electric device cover 10, and the auxiliary portion side wall 9c and the electric device cover It is configured to join 10 without gaps,
As a result, the auxiliary side wall 9c and the electrical
The structure is such that air leakage of suction air does not occur at a joint portion where is joined without gaps.

The auxiliary side wall 9c and the electrical cover 10
An engaging portion that releasably engages the engaging portion b includes an engaging hole b provided in the auxiliary side wall 9c and an engaging piece c provided in the electrical cover 10. By engaging with the engagement hole b, the auxiliary side wall 9c and the electric
The auxiliary side wall 9c and the electrical cover 10 are joined together without any gaps, so that the air leak of the suction air does not occur at the joint where the auxiliary side wall 9c and the electrical cover 10 are joined without a gap. The structure is such that it can be joined to.

The first screw portion 12 is provided upright at a first through hole 9 'provided in the electrical component box 9 and a peripheral edge of the back surface of the first through hole 9'. A pair of first locking claws 13,
The first locking claw 13 is configured with a general-purpose nut f locked so as to face the first through hole 9 ′, whereby the first screw portion 12 is This is a structure that is more cost effective than the case where an insert nut or the like is attached by integral molding as in the technology.

Further, a pair of first holding members which are adjacent to the first locking claws 13 on the rear peripheral portion of the first through-hole 9 'and oppose each other to guide the nut f and hold the side portion thereof. Piece
When the nuts f are locked by the first locking claws 13, the nuts f can be smoothly inserted and locked, and the locked nuts f can be firmly held. The configuration is as described above.

The first holding piece 14 is provided with the nut f
By forming the electric component box 9 in a planar shape or a substantially rectangular shape in cross section corresponding to the outer shape of the above, the nut f was locked corresponding to the case where the nut f was formed in a square shape or a hexagonal shape. The structure is such that the nut f can be firmly held.

Further, by providing an inclined portion g for guiding the side of the nut f at the tip of the first holding piece 14, when the nut f is locked by the first locking claw 13, The structure is such that the nut f can be more smoothly inserted and locked.

The first bellmouth 7 and the second bellmouth 8 are divided into upper and lower parts as described above.
The second bell mouth 8 is provided with an opening facing the lower part of the side wall 9a of the electrical component box 9 and the electrical component cover 10, and the opening is provided with the electrical component cover 10, The lower part of the side wall 9a is closed with an auxiliary side wall 9c extended by an extension part 9b so as to be continuous with the electric equipment cover 10, and a general-purpose nut f is provided in the extension part 9b of the electric component box 9. A second screw portion 12 'is provided, and the first bell mouth 7 is provided with a second insertion hole 7b corresponding to the second screw portion 12'.
7a, a screw e inserted through the second insertion hole 7b is screwed to the second screw portion 12 'to fix the first bell mouth 7 and the electrical component box 9 to each other. Thereby, the lower end of the blower 5 is
The upper part of 9b, it can be accommodated between the side wall 9a and the first bell mouth 7 so as to be able to swivel, and, outside the first bell mouth 7 and the second bell mouth 8,
The side wall 9a of the electrical component box 9 is not arranged,
As shown in FIG. 5, a wiring space A such as a wiring space as shown in FIG. 5 can be sufficiently secured in the electrical component box 9, and a screw e inserted through the second insertion hole 7b is connected to the general-purpose nut. The electrical component cover 10 is attached to the electrical component box 9 by screwing to the second screw portion 12 ′ having a low cost and having a low cost.

Further, the second screw portion 12 ′ is provided at the extension portion.
A second through-hole 9b 'provided in the second through-hole 9b' and a pair of second locking claws 1 standing upright on the peripheral edge of the back surface of the second through-hole 9b '.
3 'and a nut f locked by the second locking claw 13' so as to face the second through hole 9b ', whereby the second screw portion 12' is The structure is advantageous in cost as compared with the case where an insert nut or the like is attached by integral molding as in the prior art described in (1).

Further, on the periphery of the back surface of the second through hole 9b ',
Adjacent to the second locking claw 13 'and facing each other, the nut f
When the nut f is locked by the second locking claw 13 ', the nut f is inserted smoothly. And the nut f that has been locked can be firmly held.

Further, the second holding piece 14 'is continuously formed in the extending portion 9b in a flat shape or a substantially rectangular cross section in correspondence with the outer shape of the nut f. According to the case where the nut f is formed in a square shape or a hexagonal shape, the locked nut f can be firmly held.

Further, by providing an inclined portion g for guiding a side portion of the nut f at the tip of the second holding piece 14 ',
When the nut f is locked by the second locking claw 14 ',
The structure is such that the nut f can be more smoothly inserted and locked.

Further, ventilation holes d as shown in FIG. 8 are provided in the electrical component box 9 on the side of the blower 5 and the electrical component cover 10 so that the air permeability in the electrical component box 9 is enhanced. In this configuration, the electric components mounted on the substrate 11 in the electric component box 9 can be effectively cooled.

With the above configuration, FIG. 1, FIG. 2, and FIG.
As shown in (A) to FIG. 3 (C) and FIG. 4 to FIG. 8, the first bellmouth 7 and the second bellmouth 8 obtained by dividing the bellmouth up and down as described above The second bell mouth 8 is provided with a side wall 9a of the electrical component box 9.
And an opening facing the electrical cover 10, and the opening is formed by the electrical cover 10 and the electrical cover 10.
So that the lower portion of the side wall 9a is closed by an auxiliary side wall 9c extended by an extension portion 9b so as to be continuous with the auxiliary side wall 9c and the electrical component cover 10 by providing an engaging portion capable of being disengaged. On the other hand, the electrical component box 9 is provided with a first screw portion 12 having a general-purpose nut f.
A first insertion hole 10a is provided in each of the first through hole 10 and the electric cover 10 is removably engaged with the auxiliary side wall 9c by the engagement portion, and a screw e inserted through the first insertion hole 10a is screwed into the first insertion hole 10a. The electrical component cover 10 is attached to the electrical component box 9 by being screwed to the screw portion 12, whereby the lower end of the blower 5 is located above the extending portion 9b. The first bell mouth 7 can be pivotally housed between the side wall 9a and the first bell mouth 7 and the side wall 9a of the electrical component box 9 is provided outside the first bell mouth 7 and the second bell mouth 8. Are not arranged, and a structure in which a wiring space A such as wiring as shown in FIG. 5 can be sufficiently secured in the electrical component box 9 is obtained.
A screw e inserted through the first insertion hole 10a is screwed into the first screw portion 12 having the general-purpose nut f and having a low cost, and the electric component cover 10 is attached to the electric component box. 9
The ceiling-mounted air conditioner is designed to be mounted on a ceiling.

Alternatively, the bell mouth is constituted by a first bell mouth 7 and a second bell mouth 8 which are vertically divided as described above, and the second
A lower portion of the side wall 9a and an opening facing the electric cover 10 are provided, and the opening is formed by the electric cover 10 and the lower portion of the side wall 9a so as to be continuous with the electric cover 10. The electrical component box 9 is provided with a second threaded portion 12 'provided with a general-purpose nut f while the extended portion 9b of the electrical component box 9 is closed. A fixing portion 7a having a second insertion hole 7b corresponding to the second screw portion 12 'is provided, and a screw e inserted through the second insertion hole 7b is screwed into the second screw portion 12'. The first bell mouth 7 and the electrical component box 9 are configured to be fixed to each other, whereby the lower end of the blower 5 is located above the extension 9b and the side wall 9a and the second side. One bell mouse 7
And the side wall 9a of the electrical component box 9 is not disposed outside the first bell mouth 7 and the second bell mouth 8 so that the electrical component In the product box 9, a structure in which a routing space A for wiring and the like as shown in FIG. 5 can be sufficiently ensured is provided, and a screw e inserted through the second insertion hole 7 b is used.
A ceiling-embedded air conditioner in which the electrical cover 10 is attached to the electrical component box 9 by being screwed to the second screw portion 12 ′ having the general-purpose nut f and having a low cost. Machine.

[0035]

As described above, according to the present invention, it is possible to secure a sufficient space for wiring and the like in the electrical component box, and at the same time to reduce the cost of the bell mouth and the electrical component box, and the cost of the electrical component box and the electrical component cover. The ceiling-mounted type air conditioner can be fixed with an advantageous structure.

[Brief description of the drawings]

FIG. 1 is a sectional view of a ceiling-mounted air conditioner according to the present invention.

FIG. 2 is an exploded perspective view of a main part of the ceiling-mounted air conditioner according to the present invention.

3A and 3B are explanatory views of a main part of a ceiling-mounted air conditioner according to the present invention, wherein FIG. 3A is a cross-sectional view taken along line AA shown in FIG. FIG. 3A is a view as viewed from above of (A), and FIG. 3C is a sectional view taken along line BB shown in FIG.

FIG. 4 is an enlarged sectional view of a main part of the ceiling-mounted air conditioner according to the present invention.

FIG. 5 is an enlarged sectional view of a main part of the ceiling-mounted air conditioner according to the present invention.

FIG. 6 is an enlarged sectional view of a main part of the ceiling-mounted air conditioner according to the present invention.

FIG. 7 is an exploded view of a main part of the ceiling-mounted air conditioner according to the present invention.

FIG. 8 is an enlarged sectional view of a main part of the ceiling-mounted air conditioner according to the present invention.

FIG. 9 is a sectional view of a ceiling-mounted air conditioner according to a conventional example.

[Description of Signs] 1 Case body 2 Suction port 3 Blow-out port 4 Decorative panel 5 Blower 6 Heat exchanger 7 First bell mouth 7a Fixing part 7b Second insertion hole 8 Second bell mouth 9 Electrical component box 9 'First transparent Hole 9a Side wall 9b Extension 9b 'Second through hole 9c Auxiliary side wall 10 Electrical cover 10a First insertion hole 11 Board 12 First screw 12' Second screw 13 First locking claw 13 'Second locking claw 14 First holding piece 14 'Second holding piece a Step b b Engagement hole c Engagement piece d Vent hole e Screw f Nut g Inclined part

Claims (13)

[Claims] 1. A bottom surface of a case body embedded in a ceiling is provided with a suction grille constituting a suction port in the center, and a decorative panel having a blowout port is mounted around the opening grille. A ceiling provided with a blower and a heat exchanger in an air passage connecting an outlet, a bell mouth provided inside the suction port, and an electrical component box covered by a detachable electrical cover provided outside the bell mouth. In the embedded type air conditioner, the bell mouth is composed of a first bell mouth and a second bell mouth divided vertically, and the second bell mouth has a lower portion of a side wall of the electrical component box; An opening facing the cover is provided, and the opening is closed with an auxiliary side wall formed by extending the lower portion of the side wall by an extending portion so as to be continuous with the electric cover, and The auxiliary side wall and A first screw portion provided with a general-purpose nut is provided in the electrical component box, and a first insertion hole is provided in the electrical cover corresponding to the first screw portion, while providing an engaging portion that can be engaged and disengaged with the electrical component cover. Are provided, and the electrical cover is removably engaged with the auxiliary side wall by the engaging portion, and a screw inserted through the first insertion hole is screwed to the first screw portion,
The embedded ceiling air conditioner, wherein the electrical cover is attached to the electrical component box. 2. The electronic device according to claim 1, wherein the engaging portion includes opposing step portions provided on the auxiliary side wall and the electric device cover, and the auxiliary side wall and the electric device cover are joined without any gap by the same step portion. The ceiling-mounted air conditioner according to claim 1, wherein: 3. The engaging portion includes an engaging hole provided on the auxiliary side wall and an engaging piece provided on the electrical cover, and the engaging pieces are engaged with the engaging holes. The ceiling-embedded air conditioner according to claim 1, wherein the auxiliary side wall and the electrical cover are joined without any gap. 4. A pair of first locking members, wherein the first screw portion is provided on a first through hole provided in the electrical component box and a rear edge of the first through hole opposed to each other. The ceiling embedded type air conditioner according to claim 1, comprising a claw, and a nut locked with the first through-hole facing the first locking claw. 5. A pair of first holding pieces that stand adjacent to the first locking claw, guide the nut, and hold the side part thereof, are provided upright on the rear peripheral edge of the first through hole. The ceiling-mounted air conditioner according to claim 4, wherein 6. The electrical component box according to claim 5, wherein the first holding piece is formed in the electrical component box in a flat shape or a substantially rectangular shape in cross section corresponding to the outer shape of the nut. Ceiling embedded air conditioner. 7. An inclined portion for guiding a side portion of the nut is provided at a tip portion of the first holding piece.
Or the ceiling embedded type air conditioner according to claim 6. 8. A bottom surface opening of a case body buried in a ceiling is provided with a suction grille constituting a suction opening in the center, and a decorative panel provided with a blowout opening is mounted around the grille. A ceiling-mounted type in which a blower and a heat exchanger are provided in an air passage connecting the outlet, a bell mouth is provided inside the suction port, and an electrical component box covered by an electrical cover is provided outside the bell mouth. In the air conditioner, the bell mouth is composed of a first bell mouth and a second bell mouth divided vertically, and the second bell mouth has a lower part of a side wall of the electrical component box and the electrical component cover. An opposing opening is provided, and the opening is closed by the electrical cover and an auxiliary sidewall formed by extending a lower portion of the side wall by an extending portion so as to be continuous with the electrical cover; General on the extension of the box While a second screw portion provided with a nut is provided, the first bell mouth is provided with a fixing portion having a second insertion hole corresponding to the second screw portion, and a screw inserted through the second insertion hole is provided. The ceiling embedded type air conditioner, wherein the first bell mouth and the electrical component box are fixed to each other by being screwed to the second screw portion. 9. A pair of second locking members, wherein the second screw portion is provided on a second through hole provided in the extension portion and a rear edge of the second through hole opposed to each other. The ceiling-mounted air conditioner according to claim 8, comprising a claw, and a nut locked with the second through-hole facing the second locking claw. 10. A pair of second holding pieces that stand adjacent to the second locking claw, guide the nut, and hold the side part thereof, are erected on the rear peripheral edge of the second through hole. The ceiling-embedded air conditioner according to claim 9, wherein 11. The extension according to claim 10, wherein the second holding piece is continuously formed in a flat shape or a substantially rectangular cross section on the extension portion corresponding to the outer shape of the nut. Ceiling-mounted air conditioner. 12. The ceiling-embedded air conditioner according to claim 10, wherein an inclined portion for guiding a side portion of the nut is provided at a tip end of the second holding piece. 13. The ceiling mounting according to claim 1, wherein ventilation holes are provided on the blower side of the electrical component box and on the electrical component cover. Built-in air conditioner.