JP6338060B2 - Embedded ceiling air conditioner - Google Patents

Description

  The present invention relates to a ceiling-embedded air conditioner, and more particularly to a suction grill mounting structure that is attached to an air suction port.

  For example, in Patent Document 1, a main body casing is embedded in a space formed between a ceiling back wall and a ceiling surface, and a lower surface of the main body casing is opened indoors from a ceiling opening provided in the ceiling surface. A ceiling-embedded air conditioner is shown.

  A decorative panel is attached to the lower surface of the main casing. The decorative panel has a rectangular air suction port at the center, and a rectangular air outlet surrounds the four sides of the air suction port. A suction grill provided with a dust removal filter is provided at the air suction port of the decorative panel.

  The suction grill is formed in a square plate shape so as to match the air suction port of the decorative panel, and is usually locked to the decorative panel so as to be flush with the decorative panel, but is used for filter cleaning, etc. It can be opened and closed for maintenance.

  The suction grille is held by the decorative panel in a state of being hung by a hanging tool so that the suction grille does not fall on the floor when opened from the decorative panel. In Patent Document 1, a hanging tool is used in which one metal rod is formed in a ring shape, one end is locked in a locking groove provided in the decorative panel, and the other end is a suction grill. The suction grille is suspended by being engaged with a suspended portion attached to the side (see FIG. 4 of Patent Document 1).

  The locking groove is formed so that the hanging tool can slide in the vertical direction. Thus, when the decorative panel is suspended, the suspended portion is supported by the lower end of the locking groove, and when the suction grille is attached to the decorative panel, the suspended portion moves to the upper end of the engaging groove, A stop is stored in the decorative panel.

  However, in the hanging tool of Patent Document 1, since the rotation swing width is determined by the length of the hanging tool in the rotation axis direction, when the thickness of the decorative panel can be secured sufficiently, the axial length can be secured. Although there is no problem, if there is not a sufficient thickness between the decorative panel and the suction grille, the axial length cannot be secured, it is difficult to attach / detach the suction grille, and the maintainability deteriorates.

  Moreover, when the length of the hanging tool in the rotation axis direction is set to be long, the thickness of the decorative panel inevitably increases. As a result, the overhang of the decorative panel from the ceiling surface becomes large, the decorative panel appears to protrude from the ceiling surface, and the design properties are impaired without being in harmony with the ceiling surface.

JP 2001-147028 A

  SUMMARY OF THE INVENTION Accordingly, the present invention provides a ceiling-embedded air conditioner that has a good design and good workability in opening and closing the suction grille from the decorative panel without increasing the thickness of the decorative panel.

  In order to achieve the above-described object, the present invention has a ceiling-embedded main body casing having a heat exchanger and a blower inside and having a lower surface opened, an air inlet and an air outlet, and the main body casing. And a suction grille covering the air suction opening is openable and closable in the center of the makeup panel, and the suction grille is suspended when opening and closing the suction grille. In the ceiling-embedded air conditioner that is supported in a state of being hung on the decorative panel via a tool, the hanging tool is the same from both ends of the hanging part that is locked to the decorative panel and the hanging part. A pair of arms bent at a right angle to the direction, and bent from the tip of each arm to the suction grille in parallel to the suspension and at a right angle in a direction away from or close to each other. The decorative panel is slidably locked to the corner portion from the side wall facing the air suction port to the storage surface for storing the suction grille. A hanging tool engaging portion is provided, and a hanging tool insertion portion for inserting the hanging tool into the hanging tool locking portion on both sides of the hanging tool locking portion on the storage surface. It is characterized by being provided.

As a more preferred aspect, the hanging tool locking portion is provided between a locking groove that holds the locking portion of the hanging tool and the locking groove when the suction grill is housed in the decorative panel. And a support portion that supports the locking portion of the hanging tool when the suction grill is opened, and the locking groove has a part of the side wall from the storage surface of the decorative panel to the side wall. The hanging tool insertion portions are concave portions formed on both sides of the locking groove on the storage surface and formed one step lower than the storage surface. Thus, the step surface between the storage surface and the recess serves as a guide surface that guides the hanging tool to the locking groove, and the opening width of the guide surface is gradually increased from the side wall toward the base end. It is preferable.

  According to the present invention, by providing the hanging tool insertion portions for inserting the hanging tools on both sides of the hanging tool locking portion, the workability when attaching or removing the hanging portion to the decorative panel is improved. Make good.

The perspective view which looked at the ceiling embedded type air conditioner concerning one embodiment of the present invention from the lower side. The perspective view which shows the state which opened and hung the suction grille of the said ceiling-embedded air conditioner. The partial expansion perspective view which shows the state which hung the said suction grille on the hanging tool latching | locking part of the decorative panel. The partial expanded sectional view which shows the AA sectional view taken on the line of FIG. 3 in the state which closed the suction grille. The elements on larger scale which looked at the hanging tool latching | locking part of the said decorative panel from the bottom face side. The front view of the hanging tool latched by the hanging tool latching | locking part. (A)-(c) Explanatory drawing which shows the attachment procedure which attaches a hanging tool to a hanging tool latching | locking part. The partial expanded sectional view which shows the positional relationship of the hanging tool and the hanging tool latching | locking part in the state which suspended the suction grille. The partial expanded sectional view which shows the positional relationship of the hanging tool and the hanging tool latching | locking part in the state in which the suction grille is opening and closing. The partial expanded sectional view which shows the positional relationship of a hanging tool and a hanging tool latching | locking part in the state which closed the suction grille.

  Next, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited thereto.

  As shown in FIGS. 1 and 2, the ceiling-embedded air conditioner 1 includes a box-shaped main body casing 2 embedded in a space formed between a ceiling back wall surface and a ceiling surface. Inside the casing 2, a turbo fan 3 and a heat exchanger (not shown) are accommodated.

  A decorative panel 4 is attached to the lower surface side of the main casing 2. The decorative panel 4 has a rectangular air inlet 41 that communicates with the bell mouth 21 at the center. The decorative panel 4 has a rectangular shape and an air outlet 42 that communicates with the outlet of the drain pan 22 of the main body casing 2 is the air inlet 41. It is a flat rectangular frame arranged so as to surround four sides.

  Air taken into the main casing 2 from the air inlet 41 is guided along the bell mouth 21 to the inside of the turbo fan 3 and blown out toward the outer periphery of the turbo fan 3. When the air blown out from the turbofan 3 passes through the heat exchanger, it is heat-exchanged with the refrigerant, and blown out from the air outlet 42 into the room through the outlet of the drain pan 22 in the main body casing 2.

  In this embodiment, each air outlet 42 is covered by a rotating wind direction plate 421, and when the wind direction plate 421 rotates during operation by a rotating means (not shown) provided on the back side of the wind direction plate 421. The air outlet 42 is opened.

  A suction grill 5 covering the air suction port 41 is attached to the center of the decorative panel 4 so as to be opened and closed. The suction grill 5 is made of synthetic resin, and is provided with a flat rectangular frame portion 51 and a plurality of dot-shaped suction holes 52 for taking air into the air suction port 41 at the center of the frame portion 51.

  A rectangular filter frame 7 is attached to the back surface of the frame portion 51 of the suction grill 5 (the surface facing the main casing 2) so as to cover the suction holes 52. The filter frame 7 is supported by a filter guide 53 provided in the frame portion 51 shown in FIG. 2, can be pulled out downward, and is detachable. A dust filter (not shown) is stuck in the filter frame 7. Further, a rib 54 that reinforces the frame portion 51 is provided on the back surface of the frame portion 51 so as to surround the filter frame 7 at a position away from the filter frame 7.

  The decorative panel 4 includes a frame storage surface 411 that is recessed by one step so that the frame portion 51 of the suction grill 5 is flush with the wind direction plate 421 when the suction grill 5 is attached to the decorative panel 4. Moreover, the air inlet 41 of the decorative panel 4 is opened in a square shape so that the filter frame 7 can be accommodated. A surface facing the air suction port 41 is a side wall 43, and a rib storage portion 412 for storing the ribs 54 is formed in a step shape between the side wall 43 and the frame storage surface 411.

  3 and 4 together, a locking claw 511 for attaching the suction grill 5 to the decorative panel 4 is provided on the back surface of the frame portion 51 of the suction grill 5. As shown in FIGS. 8 and 9, the locking claws 511 are provided at two locations on the left and right along the ribs 54 on the decorative panel 4 side when the suction grill 5 is suspended from the decorative panel 4. It is a tongue piece that is obliquely raised in the direction and has a tip protruding substantially horizontally toward the outer periphery of the decorative panel 4.

  The decorative panel 4 is provided with a locking hole 431 at a position to receive the locking claws 11 when the suction grill 5 is attached to the decorative panel 4. The locking hole 431 is a hole that penetrates a part of the corner from the rib storage portion 412 to the frame storage surface 411, and a support portion 431a for hooking the locking claw 511 is provided near the corner. By inserting the locking claw 511 into this locking hole 431 and hooking the locking claw 511 on the support portion 431a, the suction grill 5 is rotated horizontally until it becomes horizontal. It is attached.

  Referring again to FIG. 2, two latch portions 512 and 512 are provided on the back side of the suction grill 4 as locking means for locking the suction grill 5 to the decorative panel 4. Each latch portion 512 is provided at a corner portion of the rib 54 on the other side surface (the lower end side in FIG. 2) of the filter frame 7 facing the locking claw 511. By locking the latch portion 512 in the latch hole 48 provided in the frame storage surface 411 of the decorative panel 4, the suction grill 5 can be held in a state substantially flush with the decorative panel 3. Yes. In the present invention, the specific locking structure of the latch portion 512 may be arbitrary.

  Next, with reference to FIG. 5 and FIG. 6, the hanging tool 6 which suspends the suction grill 5 to the decorative panel 4 is demonstrated. The hanging tool 6 is formed by bending one steel wire, and is the same from both ends of the locking part 61 and the locking part 61 locked to a hanging tool locking part 44 described later of the decorative panel 4. A pair of arm portions 62, 62 bent at right angles to the direction, and support shaft portions 63, 63 bent at right angles in directions away from each other in parallel to the locking portion 61 from the tip of each arm portion 62. And. The steel wire is preferably a spring steel wire having elasticity.

  A bearing portion 513 to which the hanging tool 6 is attached is provided on the back surface of the frame portion 51 of the suction grill 5. In this embodiment, the bearing portion 513 is a gate shape protruding from the back surface of the frame portion 51, and two bearing portions 513 are provided for one hanging tool 6.

  In this example, the hanging tool 6 is provided in two places in order to suspend the suction grille 5 vertically. The bearing portions 513 that are suspended by the hanging tool 6 are provided at a total of four locations. The suction grille 5 is supported by the decorative panel 4 in a suspended state via the hanging tool 6 by the pivotal shaft 63 of the hanging tool 6 being rotatably inserted into the central locking hole of the bearing portion 513. Is done.

  The locking part 61 is formed to have a length L1 that is longer than a lateral width W of a support part 445 described later of the hanging tool locking part 44, and the hanging tool 6 is accommodated in a state in which the hanging tool 6 is accommodated. It is always laid horizontally in the stop 44. The arm portion 62 is formed such that its length L2 is longer than the height H (see FIG. 4) of the side wall 43 of the decorative panel 4 (L2> H). When the grill 5 is opened, it is suspended vertically. In this embodiment, the support shaft portion 63 protrudes from the tip of the arm portion 62 in a direction away from each other, but may be formed in a direction close to each other.

  Referring again to FIGS. 3 and 4, the frame storage surface 411 and the rib storage portion 412 of the decorative panel 4 are provided with suspending device locking portions 44 that lock the suspending device 6. The hanging tool locking portion 44 includes a locking groove 440, 440, 440 a that supports the locking portion 61 of the hanging tool 6 when the suction grill 5 is stored in the decorative panel 4, and a locking groove 440, 440, A support portion 445 that is provided between 440 a and supports the locking portion 61 of the hanging tool 6 when the suction grille 5 is opened, and a hanging tool insertion portion 45 that guides the hanging tool 6 to the locking groove 440. Become.

  The locking groove 440 is a sliding groove in which the locking portion 61 of the hanging tool 6 can slide obliquely up and down, and the upper end of the decorative panel 4 is perpendicular to a vertical imaginary line extending vertically from the locking lower end 441a. Inclined toward the side wall 43. The locking groove 440 is provided along the first guide surface 441 that connects a part of the side wall 43 from the air outlet 42 side of the frame storage surface 411 of the decorative panel 4 to the upper end of the side wall 43 on the air suction port 41 side. Yes. In this embodiment, the hanging tool locking portion 44 is provided with three locking grooves 440, but the central slot 440a is not necessarily provided.

  As shown in FIG. 4, the support portion 445 is arranged in parallel with a predetermined gap G from the upper end of the first guide surface 441 and has a length about half that of the first guide surface 441. Two guide surfaces 442, a third guide surface 443 that is substantially perpendicular from the lower end of the second guide surface 442 to the frame storage surface 411, a lower end of the third guide surface 443, and a lower end of the first guide surface 441 And a horizontal support surface 444 connecting the two.

  The first guide surface 441 is an inclined surface formed obliquely from the air outlet 42 side of the frame storage surface 411 toward the upper end of the side wall 43 on the air suction port 41 side, and includes a locking lower end 441a and a locking upper end 441b. The length L3 (corresponding to the length of the first guide surface 441 in this example) of the imaginary line connecting the two is larger than the length L2 of the arm portion 63 of the hanging tool 6 (L3> L2). Yes.

  The second guide surface 442 is an inclined surface arranged in parallel with the gap G with respect to the first guide surface 441. When the suction grill 5 is opened from the decorative panel 4, the second guide surface 442 is suspended along the second guide surface 442. The six locking portions 61 are inclined surfaces that lead obliquely downward.

  The third guide surface 443 is a vertical surface that guides the locking portion 61 guided to the second guide surface 442 straight to the support surface 444, and the locking portion 61 slides the third guide surface 443 on the support surface 444. As a result, the suction grill 5 is suspended via the suspension tool 6. The support surface 444 supports the locking portion 61 in a state where the suction grill 5 is suspended.

  In this embodiment, a rib storage portion 412 for storing the rib 54 is formed in a step shape between the side wall 43 and the frame storage surface 411, but the third guide surface 443 is flush with the rib storage portion 412. It is formed to become.

  The support surface 444 is a support surface that horizontally supports the locking portion 61 of the hanging tool 6, and in this example, the length that enables the hanging tool 6 to move in the front-rear direction (left-right direction in FIG. 8). L4. The support surface 444 is formed such that its lower surface is flush with the frame storage surface 411.

  By the way, since the support part 445 is formed so as to be flush with the frame storage surface 411, when the suspension tool 6 is inserted from both sides of the suspension tool locking part 44, the suspension tool 6 is Since it hits the frame storage surface 411, the hanging tool 6 cannot be inserted into the hanging tool locking portion 44 as it is.

  Therefore, as shown in FIG. 5, on both sides of the locking groove 440 of the hanging tool locking portion 44 on the frame storage surface 411, a hanging tool insertion portion for inserting the hanging tool 6 into the locking groove 440. 45, 45 are provided. The hanging tool insertion portion 45 is a recess recessed from the frame storage surface 411 in the depth direction in FIG. 5, and the step surface between the frame storage surface 411 and the hanging tool insertion portion 45 locks the hanging tool 6. It becomes a guide surface 451 for guiding to the groove 440.

  The guide surface 451 of the hanger insertion portion 45 has an opening width from the rib storage portion 412 (close to the side wall 43, the upper end side in FIG. 5) to the outer peripheral side of the frame storage surface 411 (the lower end side of the frame storage surface 411 in FIG. It is formed in a square shape that gradually increases toward the center. In this embodiment, the letter C shape of the guide surface 451 of the hanger insert 45 is an inclined surface that opens at 45 °.

  Next, with reference to Fig.7 (a)-(c), the attachment procedure to the hanging tool latching | locking part 44 of the hanging tool 6 is demonstrated. First, as shown in FIG. 7 (a), the support shaft 63 side of the hanging tool 6 is inserted from the base end side of one hanging tool insertion part 45 (in this example, the left hanging tool insertion part 45a). . Next, the support shaft portion 63 is inserted into the left locking groove 440 in a state where the arm portion 62 is substantially parallel to the guide surface 451 of the left hanging tool insertion portion 45a.

  Next, as shown in FIG. 7B, the tip of the support shaft portion 63 of the hanger 6 inserted from the left locking groove 440 is connected to the center locking groove 440a and the right locking groove 440. The locking portion 61 is inserted up to the side surface of the left support portion 445.

  Further, as shown in FIG. 7 (c), the arm portion 62 is moved by moving the locking portion 61 in the right direction along the side surface of the left support portion 445 while rotating the suspending tool 6 clockwise. Is pulled out from the right engaging groove 440 to the right hanging tool insertion portion 45b.

  By further rotating the hanging tool 6 clockwise in this state, the tip end side of the hanging tool 6 is pulled out from the other hanging tool insertion portion 45b. According to this, as the thickness of the decorative panel 4 is reduced and the hanging device locking portion 44 is embedded in the decorative panel 4, the hanging device 6 is directly inserted into the hanging device locking portion 44. Although it cannot be done, the workability at the time of attaching or removing the hanging tool 6 to or from the decorative panel 4 is improved by providing the hanging tool insertion portions 45 on both sides of the hanging tool locking portion 44. .

  After attaching the suspending tool 6 to the suspending tool locking portion 44, the support shaft portions 63, 63 of the suspending tool 6 are elastically deformed inward and inserted into the bearing portion 513 of the suction grill 5. As shown in FIG. 2 and FIG. 8, the suction grill 5 is held in a state of being suspended from the decorative panel 4 by the suspending tool 6.

  Referring to FIG. 8, the suction grill 5 is held in a state of being suspended from the decorative panel 4 via the suspending tool 6. At this time, the suction grill 5 is suspended within the range of the length L4 of the support surface 444. The lower tool 6 can slide back and forth.

  According to this, the suspension tool 6 slides along the support surface 444, so that the amount of movement of the suction grille 5 can be given play during maintenance, and the attachment / detachment work of the filter frame 7 can be performed with a margin. And maintainability can be improved.

  Next, when attaching the suction grill 5 to the decorative panel 4, as shown in FIG. 9, the locking portion 61 of the hanging tool 6 is lifted from the support surface 444 by lifting the suction grill 5 upward. The locking portion 61 is guided upward along the first guide surface 441 and the second guide surface 442.

  At the same time, after inserting the locking claw 511 of the suction grille 5 into the locking hole 431 of the side wall 43, the suction grille 5 is made up by engaging the latch portion 512 of the suction grille with the latch hole 48 of the decorative panel 5. It is closed horizontally so as to be flush with the panel 4. At that time, as shown in FIG. 10, the hanging tool 6 is housed inside the hanging tool 6 so as to be parallel to the first guide surface 441 of the hanging tool locking portion 44.

  When opening the suction grille 5, when the latch 512 is unlocked and the free end side (latch part 512 side) of the suction grille 5 is opened downward, as shown in FIG. The locking part 61 falls down along the second guide surface 442 of the hanging tool locking part 44, and from the lower end of the second guide surface 442 through the third guide surface 443 (vertical surface), the support surface 444. Fall down. Thereby, it will be in the suspended state shown in FIG.

  As described above, according to the present invention, the suspension insertion portion 45 for inserting the suspension tool 6 into the engagement groove 440 is provided on the left and right sides of the suspension device locking portion 44, so The workability when attaching to or removing from the decorative panel 4 is improved.

DESCRIPTION OF SYMBOLS 1 Ceiling embedded type air conditioner 2 Main body casing 3 Turbo fan 4 Decorative panel 41 Air inlet 411 Frame storage surface 412 Rib storage part 42 Air outlet 43 Side wall 44 Suspension latching part 440,440a Locking groove 441 1st Guide surface 442 Second guide surface 443 Third guide surface 444 Support surface 445 Support portion 45 Suspension tool insertion portion 451 Guide surface 5 Suction grill 51 Frame portion 53 Filter guide 54 Rib 6 Suspension tool 61 Suspension portion 62 Arm portion 63 Support Shaft 7 Filter frame

Claims (2)

A ceiling-embedded main body casing having a heat exchanger and a blower inside and having an open lower surface side, an air suction port and an air outlet, and a decorative panel attached to the lower surface side of the main body casing, A suction grill that covers the air suction opening is housed in the center of the decorative panel so as to be openable and closable. When the suction grill is opened and closed, the suction grill is suspended from the decorative panel via a hanging tool. In the ceiling-embedded air conditioner supported by
The hanging tool includes a hanging portion locked to the decorative panel, a pair of arm portions bent at right angles in the same direction from both ends of the hanging portion, and a tip of each arm portion to the hanging portion. A support shaft portion which is parallel and is bent at a right angle in a direction away from or close to each other and locked to the suction grille,
The decorative panel is provided with a suspending member locking portion that slidably locks the suspended portion at a corner portion extending from a side wall facing the air suction port to a storage surface for storing the suction grille. And the suspension tool insertion part for inserting the said suspension tool into the said suspension tool latching | locking part is provided in the both sides of the said suspension tool latching | locking part in the said storage surface, It is characterized by the above-mentioned. Embedded ceiling air conditioner. The hanging tool locking portion is provided between a locking groove that holds the locking portion of the hanging tool when the suction grill is housed in the decorative panel, and the suction groove. And a support portion that supports the locking portion of the hanging tool when the grill is opened, and the locking groove connects a part of the side wall from the storage surface of the decorative panel to the upper end of the side wall. 1 is formed obliquely along the guide surface, and the hanger insertion part is a recess formed on both sides of the locking groove in the storage surface and formed one step lower than the storage surface, the storage surface The step surface between the recess and the recess serves as a guide surface that guides the hanging tool to the locking groove, and the opening width of the guide surface is gradually increased from the side wall toward the base end. The ceiling-embedded air conditioner according to claim 1.

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