JP4926017B2 - Indoor unit and air conditioner equipped with the indoor unit - Google Patents

Description

  The present invention relates to an indoor unit in which a casing is suspended from a ceiling in a room or embedded in a ceiling, and an air conditioner including the indoor unit. The present invention relates to an air conditioner equipped with a machine.

  Conventionally, there is an indoor unit of a type in which a casing is installed on a ceiling (for example, a ceiling-suspended type or a ceiling-embedded type). In such an indoor unit, the grill must be mounted at a high position, that is, a position near the ceiling. Therefore, it is required not to drop the grill from the viewpoint of safety. Therefore, various proposals have been made in which a grill is supported by a plurality of hanging straps so that the grill is not dropped. If the grill is supported by a plurality of hanging straps, the grill can be prevented from falling to the floor unless all the hanging straps are cut.

  As such, “Embedded ceiling with a mechanism that lifts and lowers the suction grille by supporting the suction grille through the four hanging straps on the decorative panel and feeding or unwinding the four hanging straps. In the type air conditioner, a pair of guides each having a through hole for the hanging strap are provided on two opposing sides of the suction grille, the hanging strap is inserted into each through hole, and each side is inserted. A ceiling-embedded air conditioner in which the ends of the hanging straps are connected by a connector having a diameter larger than the diameter of the guide through hole has been proposed (for example, see Patent Document 1).

JP 2004-150716 A (Page 6, FIG. 9)

  In the ceiling-embedded air conditioner described in Patent Document 1, in order to prevent the grill from dropping, the ends of the suspension straps have a diameter larger than the diameter of the guide through hole (for example, a ring). Even if one of the hanging straps is cut, the grille is supported by another hanging strap via the ring. However, in addition to passing the hanging string through the grill, this hanging string must be connected to the ring, which not only causes problems such as installation and maintenance work, but also increases the labor required for the work. There was also a problem. Further, if the hanging strap is not sufficiently fixed, there is a problem that the hanging strap is detached and the grill is likely to fall. Further, when the hanging strap is fixed with a screw or the like, a tool is required for attachment or removal work, and there is a problem that extra labor is increased.

  The present invention has been made in order to solve the above-described problems, and is provided with a suction grill that can be raised and lowered to prevent the string that supports the suspension of the suction grille from hanging, and to improve the maintainability. An indoor unit and an air conditioner equipped with the indoor unit are provided.

The indoor unit according to the present invention includes a suction grill unit that can be moved up and down, a joint that is connected to the suction grill unit, a plurality of strings that support the suspension of the suction grill unit, and A lifting device unit for moving the suction grill unit up and down, and a portion of the suction grill unit connected to the joint has a space in which the joint can be stored, and a passage hole through which the joint can pass is the space. formed on the upper surface defining a said joint cord fixing member movable locking groove is formed on the upper surface connected with the passage hole is provided in the horizontal direction, the passage of the cord fixing member is provided with elastic pieces to be elastically deformed by inserting the joint on the inner bottom surface just under the hole, the locking grooves of the cord fixing member Thereby restricting the vertical movement of the joint at the periphery, the horizontal direction to the passage hole side of the joint by said elastic piece is restored in accordance with the movement in the horizontal direction to the locking groove side of the joint it is intended to restrict the movement of.

  According to the indoor unit according to the present invention, the string does not come off from the string fixing member, and the suction grill unit can be effectively prevented from falling. Further, when connecting the string to the string fixing member, it is possible to reduce the labor required for the work without requiring a special tool or the like. Furthermore, since the joint can be connected and fixed to the string fixing member with a simple structure, the labor required for the work can be further reduced and the maintainability can be improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic front view showing a state in which an indoor unit 10 according to an embodiment of the present invention is viewed from the front. FIG. 2 is a schematic side view showing the indoor unit 10 as viewed from the side. FIG. 3 is a schematic front view showing a state where the suction grill 7 is lowered from the indoor unit 10. FIG. 4 is a schematic side view showing a state where the suction grille 7 is lowered from the indoor unit 10. Based on FIGS. 1-4, the structure and operation | movement of the indoor unit 10 which concern on this embodiment are demonstrated. In addition, in the following drawings including FIG. 1, the relationship of the size of each component may be different from the actual one.

  The indoor unit 10 is installed as a component of the air conditioner 100 by being suspended from a ceiling in a room or the like. The air conditioner 100 supplies cooling air or heating air into the room by using a refrigeration cycle (heat pump cycle) for circulating the refrigerant. The air conditioner 100 includes an indoor unit 10 and an outdoor unit (not shown) that is connected to the indoor unit 10 through a refrigerant pipe and is equipped with various refrigeration equipment such as a compressor, a heat exchanger, and an expansion valve. It is configured. In addition, what kind of refrigerant | coolant employ | adopted as the air conditioner 100 may be sufficient, and a kind in particular is not limited.

  The indoor unit 10 includes a housing 1 in which an air outlet 4 for supplying air for cooling or heating to a room or the like is formed in front, and a lifting device provided on the outer bottom surface of the housing 1. A suction grill 60 and a housing 3 housed in the housing 1, sucking air from the suction port 5 and blowing air from the outlet 4, and housed in the housing 1, refrigerant from the outdoor unit and the housing 1 And a heat exchanger 2 for exchanging heat with indoor air sucked in. The housing 1 is partitioned by a partition plate 1b that partitions the interior in the front-rear direction, and the heat exchanger 2 is arranged from the vicinity of the center to the front part, and the blower 3 is arranged on the rear side. . The suction grill 60 with the lifting device will be described in detail later.

  The heat exchanger 2 may be configured by a fin tube type heat exchanger configured by, for example, a plurality of plate-like fins and a heat transfer tube inserted so as to be orthogonal to the fins. The heat exchanger 2 has a wide width from side to side as viewed from the front of the indoor unit 10, for example. In addition, here, the heat exchanger 2 is illustrated as an example in which the heat exchanger 2 is disposed obliquely so as to be inclined upward toward the front side of the indoor unit 10 so that the heat exchange area can be increased. It should be noted that the size and shape of the heat exchanger 2 and the manner of arrangement in the housing 1 are not limited to the case shown in this embodiment.

Here, the operation of the indoor unit 10 will be briefly described.
The indoor unit 10 sucks air in a place where it is installed (hereinafter simply referred to as indoor air) from the suction port 5 of the suction grill 7 in accordance with refrigerant operation or heating operation. That is, the room air is sucked into the housing 1 from the suction grill 60 with a lifting device by the rotation of the blower 3 arranged on the rear side in the housing 1. After that, the indoor air is heat-exchanged with the refrigerant flowing through the heat exchanger 2 in the heat exchanger 2 to become cooling air or heating air from the air outlet 4 in front of the housing 1 to the air-conditioning target area (indoor or the like). Is blown out.

  Next, the suction grill 60 with a lifting device will be described in detail. First, a basic configuration of the suction grill 60 with a lifting device will be described with reference to FIGS. The suction grill 60 with the lifting device is attached to the outside of the bottom surface on the rear side of the housing 1. The suction grill 60 with a lifting device communicates with the housing 1 and supplies room air into the housing 1 through a suction port 5 formed in the suction grill 7. The suction grill 60 with a lifting device includes a string 50, a lifting device unit 20, and a suction grill unit 30.

  The lifting device unit 20 includes a main body 20a, a driving motor 40 accommodated in the main body 20a, a reduction gear (not shown), a pulley (not shown) around which the string 50 is wound, and the like. Yes. Further, as shown in FIG. 4, the lifting device unit electrical box 20 b in which a substrate or the like for controlling the drive motor 40 is accommodated is located above the unit electrical box 9 disposed on the rear rear surface of the housing 1. Is provided. Further, the upper surface of the main body 20 a is attached to the lower rear surface of the housing 1 so that the suction grill 60 with a lifting device and the housing 1 communicate with each other.

The reason why the electrical device box 20b for the lifting device unit is provided above the unit electrical product box 9 is as follows.
(1) During the maintenance of the unit electrical component box 9, the lifting device unit electrical component box 20b can be kept out of the way.
(2) Since the electrical equipment box 20b for the lifting device unit has been sufficiently confirmed by the manufacturer, maintenance is almost unnecessary.

  The suction grill unit 30 includes a plurality of suction grills 7 (here, a case where two suction grills 7 are provided is shown as an example), and a filter 6 attached to each of the suction grills 7. Yes. The two suction grilles 7 are connected by the first connecting member 33a and the second connecting member 33b. The first connecting member 33 a connects the two suction grilles 7 on the front side of the suction grill unit 30. The second connecting member 33 b connects the two suction grilles 7 on the back side of the suction grill unit 30. The first connecting member 33a and the second connecting member 33b are fixed to the suction grill unit 30 (specifically, the suction grill 7) by screwing or the like.

  The suction grill unit 30 is suspended and supported by a string 50 having one end connected to the lifting device unit 20. Further, the suction grill unit 30 is accommodated in the lifting device unit 20. Here, an example is shown in which the suction grill unit 30 is connected by a total of four strings 50, two on each of the left and right sides. That is, the suction grill unit 30 can be moved up and down by the string 50 being wound around the pulley by the driving motor 40 of the lifting device unit 20 or being sent out. In addition, the number of the strings 50 that support the suspension of the suction grill unit 30 is not particularly limited. It is desirable to make it.

  FIG. 5 is an explanatory diagram for explaining a method of attaching the filter 6 to the suction grill 7. Based on FIG. 5, an example of a method for attaching the filter 6 to the suction grill 7 will be described. As described above, the filter 6 is attached to each suction grill 7. Here, the case where the lever 7a which can deform | transform is provided in this suction grille 7 is shown as an example. A hook 7 b is provided at the tip of the lever 7 a, and the hook 7 b is engaged with the filter 6.

  A protrusion 6a that engages with the hook 7b is formed on the outer edge of the filter 6 (the outer edge at a position corresponding to the hook 7b). That is, the filter 6 is attached to the suction grille 7 by engaging the hook 7b with the protrusion 6a. When the filter 6 is attached to the suction grille 7, when the filter 6 is pushed in from above, the lever 7a is deformed to the outside, and the hook 7b engages with the protrusion 6a so that the filter 6 is attached to the suction grille 7. On the other hand, when removing the filter 6 from the suction grille 7, if the lever 7a is tilted outward, the engagement between the hook 7b and the protrusion 6a is released, and the filter 6 can be removed from the suction grille 7.

  FIG. 6 is an explanatory diagram for explaining a connection method between the suction grill unit 30 and the string 50. Based on FIG. 6, the connection method of the suction grill unit 30 and the string 50 is demonstrated. 6A shows a state (finished state) in which a joint (hook part) 50a is attached to the tip of the string 50, and FIG. 6B shows an engagement attached to the tip of the string 50. The state which pulled out the part 50b is shown. As described above, the suction grill unit 30 is suspended and supported by the string 50 connected to the lifting device unit 20.

  As shown in FIG. 6, for example, a resin joint 50 a is provided at the tip of the string 50 of the lifting device unit 20. The joint 50a includes a first shaft portion 50c in which a through hole 51 that penetrates in the vertical direction so that the string 50 passes through the inside, a space portion 52 having an inner diameter larger than the inner diameter of the through hole 51, and a space The second shaft portion 50d is formed with a hole 53 having an inner diameter substantially the same as the inner diameter of the through hole 51 that allows the portion 52 and the through hole 51 to communicate with each other. The first shaft portion 50c and the second shaft portion 50d may be configured by two cylindrical members having, for example, concentric planar shapes and different outer diameters. Further, the second shaft portion 50 d is provided so as to be positioned at the lowest shortest portion of the string 50.

  The joint 50a does not have to be cylindrical as long as it has two stages, and may be configured, for example, as a quadrangular prism. In addition, the first shaft portion 50c and the second shaft portion 50d may be formed integrally, or may be configured by combining those formed separately. Furthermore, the constituent material of the joint 50a is not particularly limited, and can be made of various materials such as metal, wood, and stone. As shown in FIG. 6B, the joint 50a and the string 50 are connected to each other by attaching an engagement portion 50b, which is obtained by bending a metal plate to the end of the string 50, and performing the connection through the engagement portion 50b. It is like that. That is, the engaging portion 50 b is formed to be larger than the inner diameter of the through hole 51 and smaller than the inner diameter of the space portion 52.

  Further, the space 52 formed in the second shaft portion 50d is formed with a predetermined depth with a diameter that does not allow the engaging portion 50b to be caught from the bottom surface side of the second shaft portion 50d. . That is, as shown in FIG. 6B, the diameter A of the space portion 52 of the second shaft portion 50d is longer than the length of the engaging portion 50b, and on the upper surface side of the second shaft portion 50d. The engaging portion 50b is hooked. Then, by pulling up the string 50, the engaging portion 50b rises, and the engaging portion 50b is caught at the boundary between the space portion 52 and the hole portion 53 of the second shaft portion 50d as shown in FIG. Thus, the string 50 and the joint 50 are connected (engaged).

  FIG. 7 is an explanatory diagram for explaining the string fixing member 30 b formed in the suction grill unit 30. Based on FIG. 7, an example of the string fixing member 30b formed in the suction grill unit 30 for fixing the joint 50a provided at the tip of the string 50 will be described. 7A is a perspective view showing the vicinity of the connection portion between the suction grill unit 30 and the string 50, that is, the string fixing member 30b, and FIG. 7B is a plan view showing the string fixing member 30b. Although not shown, the suction grill unit 30 is provided with the suction grill 7.

  As shown in FIG. 7A, the suction grill unit 30 has a string fixing member 30b for engaging with a joint 50a attached to the tip of the string 50 (see FIG. 6B) at the left and right ends, respectively. Two places are provided. That is, the string fixing member 30 b is provided in the vicinity (diagonal) of the four corners of the plate material constituting the suction grill unit 30. A total of four string fixing members 30b are fixed to the suction grill unit 30 with screws 30c as shown in FIG. 7B. In addition, the installation number of the string fixing member 30b is not particularly limited, and may be determined according to the number of the strings 50.

  The string fixing member 30a has a space in which the joint 50a can be accommodated, and a circular portion (passing hole) 35a through which the joint 50a can pass is formed on the upper surface defining the internal space, and the suction grill unit An opening (locking groove) 35b through which the string 50 suspending 30 is movable in the horizontal direction is connected to the circular portion 35a and formed on the upper surface. Here, the circular part 35a and the opening part 35b constitute a Dalma hole 35 having a planar shape like a keyhole. As shown in FIG. 7B, the opening 35 b has a long hole shape, one end communicates with the circular portion 35 a, and the other end of the circular portion is approximately the center of the planar shape of the suction grill unit 30. It is formed to face. Inside the string fixing member 30b, an internal space portion 36 for accommodating the second shaft portion 50d of the joint 50a is formed (see FIG. 8A).

  The height of the internal space portion 36 is substantially the same as the height of the second shaft portion 50d, and restricts the movement of the second shaft portion 50d in the vertical direction. Further, in a state where the joint 50a passes through the circular portion 35a of the string fixing member 30b, the first shaft portion 50c protrudes above the string fixing member 30b. And since the 1st axial part 50c is comprised by the outer diameter smaller than the groove width E of the opening part 35b, the joint 50a can move to the opening part 35 side in a horizontal direction. On the other hand, the joint 50a moved to the opening 35b side has a second shaft portion 50d having an outer diameter larger than the groove width E of the opening 35b by the inner space 36 of the string fixing member 30b. It catches on the upper surface of 30b, and the movement of a perpendicular direction is controlled.

  In this embodiment, a case where a dharma hole 35 (consisting of a circular portion 35a functioning as a passage hole and an opening 35b functioning as a locking groove) is formed in the string fixing member 30b is taken as an example. However, the present invention is not limited to this. The passage hole only needs to have a shape that allows the joint 50a to pass to the inside of the string fixing member 30b. For example, the passage hole may have a polygonal planar shape, or a notch may be provided in a part of the string fixing member 30b. Or a through hole.

  The opening (locking groove) 35b is formed in a planar shape such that the groove width E is larger than the outer diameter of the first shaft portion 50c and smaller than the outer diameter of the second shaft portion 50d. It only has to be. Thus, if the planar shape of the opening 35b is such that only the first shaft portion 50c constituting the joint 50a can move in the horizontal direction, in a state where the joint 50a is moved to the locking groove side, The second shaft portion 50d constituting the joint 50a is hooked on the upper surface of the string fixing member 30b, and the joint 50a can be connected to the string fixing member 30b.

  FIG. 8 is an explanatory diagram for explaining the string fixing member 30b in detail. FIG. 9 is an explanatory diagram for explaining a connection method between the suction grill unit 30 and the string 50 (specifically, the joint 50a). Based on FIG.8 and FIG.9, while describing the detail of the string fixing member 30b, an example of the connection method of the suction grill unit 30 and the string 50 is demonstrated. 8A is a longitudinal sectional view showing a state where the string 50 is connected to the suction grill unit 30, and FIG. 8B is a sectional configuration of the elastic piece 30d formed on the inner bottom surface of the string fixing member 30b. FIG. 8C is a partial cross-sectional view showing a state when the string 50 is removed from the suction grill unit 30.

  As shown in FIG. 8A, an elastic piece 30d is formed on the inner bottom surface of the string fixing member 30b. The elastic piece 30d is formed by cutting and raising a part of the bottom surface of the string fixing member 30b at a predetermined angle. The elastic piece 30d is formed at a position corresponding to the circular portion 35a of the dharma hole 35, that is, directly below, and the end on the opening 35b side is cut and raised. As shown in FIG. 8B, the plate thickness D of the elastic piece 30d is formed to be thinner than the plate thickness B of the string fixing member 30b. That is, the elastic piece 30d is formed by thinning a part of the bottom surface of the string fixing member 30b from the outside and cutting it up with a predetermined cut.

  The elastic piece 30d is formed such that the width C in the short direction is wider (longer) than the diameter A of the joint 50a. Further, the tip of the elastic piece 30d (the end which is cut between the string fixing member 30b and separated from the string fixing member 30b) is the operating direction of the joint 50a (that is, the circular portion 35a). And the opening 35b). By doing so, the joint 50a can be moved in the horizontal direction with a smooth operation and can be easily fixed (this will be described in detail in FIG. 10).

  As shown in FIG. 8 (c), the elastic piece 30d is pushed from above with a predetermined force from the connecting portion with the string fixing member 30b (the end opposite to the end on the opening 35b side). It is bent (elastically deformed) so as to incline downward toward the end on the opening 35b side. That is, a predetermined force is applied to the elastic piece 30d by the joint 50a provided at the tip of the string 50. The elastic piece 30d bends downward to enable the joint 50a to slide in the horizontal direction (from the circular portion 35a of the Dalma hole 35 to the opening 35b of the Dalma hole 35).

  Further, the elastic piece 30d is released from the load of the joint 50a when the joint 50a slides in the horizontal direction, and returns to the original state, that is, the state where it is cut and raised by the repulsive force. By doing so, the elastic piece 30d regulates the movement of the joint 50a that has moved to the opening 35b side (arrow shown in FIG. 9). The connection and removal between the joint 50a and the string fixing member 30b will be described in detail with reference to FIG.

  FIG. 10 is an explanatory diagram for explaining the operation at the time of attaching and detaching the joint 50a. Based on FIG. 10, an example of the connection operation of the joint 50a and the string fixing member 30b will be described in detail. As described above, the joint 50a is provided at the opposite end of the string 50 connected to the lifting device unit 20 (the end on the suction grill unit 30 side). The suction grill unit 30 is provided with a string fixing member 30b for engaging the joint 50a.

  When the suction grill unit 30 is connected to the tip of the string 50 connected to the lifting device unit 20, the joint 50 a provided at the tip of the string 50 is connected to the dharma hole 35 of the string fixing member 30 b provided in the suction grill unit 30. It inserts in the circular shaped part 35a to comprise (FIG. 10 (1)). At this time, the joint 50a pushes the elastic piece 30d provided inside the string fixing member 30b with a predetermined force (FIG. 10 (2)). In other words, the elastic piece 30d is inclined downward from the connection portion toward the end portion on the opening 35b side, with the connection portion that is the end opposite to the end portion on the opening 35b side as a fulcrum. It turns.

  The joint 50a can slide in the horizontal direction by pushing the elastic piece 30d downward. Therefore, the joint 50a is moved from the circular portion 35a of the dharma hole 35 to the opening portion 35b having a smaller planar area than the circular portion 35a. At the same time, no force is applied to the elastic piece 30d, and the elastic piece 30d jumps up by the repulsive force, thereby restricting the horizontal movement of the joint 50a (FIG. 10 (3)). By doing so, the connection between the tip of the string 50 connected to the lifting device unit 20 and the suction grill unit 30 is completed.

  Since it is the above structures, the connection with the suction grill unit 30 and the string 50 (joint 50a of the front-end | tip) can be performed by a very simple operation | movement. Further, the joint 50a moved to the opening 35b is caught by the elastic piece 30d restored to the cut and raised state, and the movement is restricted, and moves from the opening 35b to the circular part 35a or the elastic piece 30d side. This prevents the string 50 from coming out of the suction grill unit 30 effectively.

  When removing the suction grill unit 30 from the tip of the string 50 connected to the lifting / lowering device unit 20, a rod-shaped part (for example, a ballpoint pen, a wire, etc.) is formed on the circular portion 35a constituting the Dalma hole 35 of the string fixing member 30b. Daily goods) and the elastic piece 30d is pushed downward (FIG. 10 (4)). In this manner, the joint 50a is moved from the opening 35b of the dharma hole 35 to the circular portion 35a having a large planar area while pushing the elastic piece 30d to the vicinity of the bottom surface of the string fixing member 30b (FIG. 10 (5)). . That is, by applying a predetermined force to the elastic piece 30d, the restriction on the movement of the joint 50a is released.

  Then, by pulling the joint 50a moved to the circular portion 35a side upward, the removal of the tip of the string 50 connected to the lifting device unit 20 from the suction grill unit 30 is completed (FIG. 10 ( 6)). As described above, since the plate thickness D of the elastic piece 30d is thinner than the plate thickness B of the string fixing member 30b, the elastic piece 30a is moved when the joint 50a moves from the opening 35b side to the circular portion 35a. It does not get caught in 30d. Further, since the diameter A of the joint 50a is smaller than the width C in the short direction of the elastic piece 30d, the elastic piece 30d does not enter the inside of the joint 50a, and the joint 50a does not get caught and operates smoothly. Can be pulled out.

  FIG. 11 is an explanatory diagram for explaining the lifting device remote controller 70 for operating the indoor unit 10. Based on FIG. 11, an example of a method for operating the suction grill 60 with the lifting device of the indoor unit 10 using the lifting device remote controller 70 will be described. The elevator remote controller 70 communicates with the indoor unit 10 using infrared communication or the like, receives instructions from general users, workers, maintenance personnel, etc. (hereinafter simply referred to as users), and receives the information from the indoor unit 10. It functions as an operation communication unit that transmits to the control board in the unit electrical component box 9 and the lift device unit electrical component box 20b. In addition, although the case where only the switch for operating the suction grill 60 with a raising / lowering device is provided is shown here as an example, a switch for setting the air conditioner 100 such as temperature setting and air volume adjustment is provided. You may make it provide together.

  The elevator remote controller 70 includes a transmission unit 70a and an operation unit 70b. The transmission unit 70a has a function of transmitting operation information of the operation unit 70b to a control board in the unit electrical component box 9 of the indoor unit 10 or the lift device unit electrical component box 20b. The operation unit 70b is for receiving an instruction from the user. The operation unit 70 b is provided with, for example, a “up” switch 71, a “stop” switch 72, and a “down” switch 73. In addition, you may make it provide the display part comprised by LED (light-emitting diode: Light emitting diode), a liquid crystal display, a fluorescent tube, electroluminescence, a plasma display etc. collectively.

  A user who wants to drive the suction grill 60 with the lifting device first operates the operation unit 70 b of the lifting device remote controller 70. When the user wants to lower the suction grill unit 30, the user operates the “lower” switch 73. When the user wants to stop the suction grill unit 30, the user operates the “stop” switch 72 to change the suction grill unit 30. If it is desired to raise, the “raise” switch 71 may be operated. For example, when the suction grill unit 30 and the string 50 are connected, the “lower” switch 73 is operated to lower the suction grill unit 30 from the indoor unit 10 installed on the ceiling.

  When the suction grill unit 30 is lowered to a position where the user can easily work, the “stop” switch 72 is operated to stop the lowering of the suction grill unit 30. By doing so, the user's workability and maintainability can be improved. When the user's work is completed, the “raise” switch 71 is operated to raise the suction grill unit 30 and store the suction grill unit 30 in the lifting device unit 20. That is, the suction grill unit 30 is housed in the lifting device unit 20 to complete the operation.

  As described above, the joint 50a composed of the first shaft portion 50c and the second shaft portion 50d is provided at the distal ends of the plurality of strings 50 that suspend the suction grill unit 30. A string fixing member 30 b that is connected (engaged) to the suction grill unit 30 is provided in the suction grill unit 30. The string fixing member 30b has a passage hole (here, the circular portion 35a) having a size through which the second shaft portion 50d of the joint 50a can pass, and a locking groove (here, an opening) connected to the passage hole. 35b), the joint 50a can be passed through and connected to the inside of the string fixing member 30b.

  An elastic piece 30d is formed on the inner bottom surface of the string fixing member 30b. The elastic piece 30d is elastically deformed by the pressure of the joint 50a and returns to its original state when released from the load. The movement in the horizontal direction is restricted. That is, the joint 50a is restricted from moving in the vertical direction by the space portion and the locking groove of the string fixing member 30b, and is also restricted from moving in the horizontal direction by the elastic piece 30d. Are connected and fixed.

  In order to fix the joint 50a to the string fixing member 30b attached to the suction grille 7 side, a part of the inner bottom surface of the string fixing member 30b is cut and raised to be an elastic piece 30d, thereby moving the joint 50a in the horizontal direction. The joint 50a can be prevented from coming out of the string fixing member 30b, that is, the string 50 from the suction grill unit 30. Further, in order to fix the joint 50a to the string fixing member 30b attached to the suction grille 7 side, a notch is made between the ends of the elastic pieces 30d provided on the inner bottom surface of the string fixing member 30b (the string fixing member 30b). The joint 50a can be moved and fixed with a smooth operation by directing the end of the cord fixing member 30b that is separated from the cord fixing member 30b in the operation direction of the joint 50a.

  In order to fix the joint 50a to the string fixing member 30b attached to the suction grille 7 side, the plate thickness D of the elastic piece 30d provided on the inner bottom surface of the string fixing member 30b is set to the plate thickness B of the bottom surface of the string fixing member 30b. By making it thinner, the joint 50a is prevented from being caught by the elastic piece 30d during removal. Moreover, the string fixing member 30b can be reduced in size by disposing the string fixing member 30b in which the dharma hole 35 is formed at the diagonal position of the suction grill unit 30. Further, in order to fix the joint 50a to the string fixing member 30b attached to the suction grille 7 side, the width C of the elastic piece 30d provided on the inner bottom surface of the string fixing member 30b is set to the joint 50a (second shaft portion 50d). By making the diameter A smaller than the inner diameter A, the elastic piece 30d enters the inside of the joint 50a, and the joint 50a is not caught by the elastic piece 30d.

  The elastic piece 30d is formed on the bottom surface inside the string fixing member 30b corresponding to the circular portion 35a of the Dalma hole 35. The elastic piece 30d can be operated with a rod-like member from the Dalma hole 35, and a special piece is provided. The work can be easily performed without using a tool or the like, and the labor required for the work can be reduced. The suction grill unit 30 and the string 50 can be connected by pulling the string 50 out of the lifting device unit 20 and lowering the suction grill unit 30 to a position where the user can easily work. Can be improved.

  The user can operate the drive motor 40 by operating the lifting device remote controller 70, that is, move the suction grill unit 30 up and down. By operating the drive motor 40 in the direction to wind up the string 50, the suction grill unit 30 can be raised, and the suction grill unit 30 can be stored in the main body 20 a of the lifting device unit 20. On the contrary, by operating the drive motor 40 in the direction of feeding the string 50, the suction grill unit 30 housed in the main body 20a of the lifting device unit 20 can be lowered to a height that can be easily reached by the user. .

It is a schematic front view which shows the state which looked at the indoor unit which concerns on embodiment from the front. It is a schematic side view which shows the state which looked at the indoor unit from the side. It is a schematic front view which shows the state which lowered | hung the suction grille from the indoor unit. It is a schematic side view which shows the state which lowered | hung the suction grille from the indoor unit. It is explanatory drawing for demonstrating the attachment method of the filter to a suction grill. It is explanatory drawing for demonstrating the connection method of a suction grill unit and a string. It is explanatory drawing for demonstrating the string fixing member (fixing part) formed in the suction grill unit. It is explanatory drawing for demonstrating a string fixing member in detail. It is explanatory drawing for demonstrating the connection method of a suction grill unit and a string. It is explanatory drawing for demonstrating the operation | movement at the time of attachment and removal of a joint. It is explanatory drawing for demonstrating the raising / lowering apparatus remote control for operating an indoor unit.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Case, 1b Partition plate, 2 Heat exchanger, 3 Blower, 4 Outlet, 5 Suction port, 6 Filter, 6a Protrusion part, 7 Suction grill, 7a Lever, 7b Hook, 9 Unit electrical box, 10 Indoor unit , 20 Lifting device unit, 20a Main body, 20b Lifting device unit electrical box, 30 Suction grill unit, 30b String fixing member, 30c Screw, 30d Elastic piece, 33a First connecting member, 33b Second connecting member, 35 Dharma hole , 35a circular portion, 35b opening, 36 internal space portion, 40 drive motor, 50 string, 50a joint, 50b engagement portion, 50c first shaft portion, 50d second shaft portion, 51 through hole, 52 Space part, 53 holes, 60 Suction grill with lifting device, 70 Lifting device remote control, 70a Transmission unit, 70b Operation unit, 71 Pitch, 72 "stop" switch, 73 "lowering" switch, 100 the air conditioner.

Claims (13)

A suction grill unit that can be raised and lowered;
A joint connected to the suction grill unit is provided at the tip, and a plurality of strings for hanging and supporting the suction grill unit;
A lifting device unit that lifts and lowers the suction grill unit through the string,
In the portion connected to the joint of the suction grill unit,
A space in which the joint can be accommodated, and a through hole through which the joint can pass is formed on an upper surface defining the space;
There is provided a string fixing member formed on the upper surface by connecting a locking groove in which the joint can move in the horizontal direction to the passage hole,
An elastic piece that is elastically deformed by inserting the joint on the inner bottom surface of the string fixing member immediately below the passage hole is provided,
While restricting the vertical movement of the joint at the periphery of the locking groove of the string fixing member,
The indoor unit is characterized in that the elastic piece is restored along with the horizontal movement of the joint toward the locking groove, thereby restricting the horizontal movement of the joint toward the passage hole. A suction grill unit that can be raised and lowered;
A joint connected to the suction grill unit is provided at the tip, and a plurality of strings for hanging and supporting the suction grill unit;
A lifting device unit that lifts and lowers the suction grill unit through the string,
In the portion connected to the joint of the suction grill unit,
A space in which the joint can be accommodated, and a through hole through which the joint can pass is formed on an upper surface defining the space;
There is provided a string fixing member formed on the upper surface by connecting a locking groove in which the joint can move in the horizontal direction to the passage hole,
An elastic piece is provided that elastically deforms so that the joint can slide in the horizontal direction by inserting the joint into the inner bottom surface of the string fixing member directly below the passage hole,
The joint is
A first shaft portion having an outer diameter smaller than the groove width of the locking groove;
A second shaft portion connected to the lower end side of the first shaft portion and having an outer diameter larger than the groove width of the locking groove;
In the state where the first shaft portion of the joint has moved to the locking groove,
While restricting the vertical movement of the joint by hooking the second shaft portion at the periphery of the locking groove of the string fixing member,
As the elastic piece moves in the horizontal direction to the locking groove side of the joint, the force applied through the joint is released and restored, so that the horizontal direction of the joint toward the passage hole side of the joint is released . Indoor unit characterized by restricting movement. The joint is
A first shaft part having an outer diameter smaller than the groove width of the locking groove and having a through hole through which the string passes; and
A space portion having an outer diameter larger than the groove width of the locking groove, an inner diameter larger than the inner diameter of the through hole, and an inner diameter substantially the same as the inner diameter of the through hole communicating the space portion with the through hole And a second shaft portion in which a hole portion having
Claims the cord is inserted into the through hole and the hole, the by engaging the leading end of the string at the upper surface of the second shaft portion, characterized in that it is connected with said said strap joint Item 3. The indoor unit according to Item 1 or 2 . The indoor unit according to claim 3 , wherein a metal plate that is larger than an inner diameter of the through hole and smaller than an inner diameter of the space portion is attached to a tip of the string. The elastic piece is
Claims, characterized in that it is thinner than the thickness of the bottom surface of the part of the bottom surface of the cord fixing member is formed by cutting and raising at a predetermined angle, the cord fixing member the thickness of the elastic piece Indoor unit in any one of 1-4 The indoor unit according to claim 5 , wherein a tip of the elastic piece, which is separated from the string fixing member, is directed in a horizontal operation direction of the joint. The indoor unit according to any one of claims 1 to 6 , wherein the string fixing member is disposed at a diagonal position of the suction grill unit. The locking groove is
The indoor unit according to claim 7 , wherein the indoor unit is formed so as to face substantially the center of the suction grill unit. The indoor unit according to any one of claims 3 and 8, which is dependent on claim 3 and claim 3 , wherein a width of the elastic piece is wider than an inner diameter of the second shaft portion. The indoor unit according to any one of claims 1 to 9, wherein a dharma hole is formed by the passage hole and the locking groove. The indoor unit according to any one of claims 3 to 10, subordinate to claim 3, wherein the first shaft portion and the second shaft portion are cylindrical. In the state where the joint is connected to the string fixing member,
After the elastic piece is pushed down to release the restriction of horizontal movement of the joint, the joint can be removed by moving the joint from the locking groove to the passage hole. The indoor unit according to any one of claims 1 to 11 , wherein An air conditioner comprising the indoor unit according to any one of claims 1 to 12 .

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