JP6962764B2 - Connection guide structure and piping cover used for it - Google Patents

Description

The present invention relates to a drain water treatment technique for drain water generated during a cooling operation or a dehumidifying operation of an air conditioner indoor unit.

The air conditioner indoor unit is provided with a drain pan that receives and stores dew condensation water dripping from a heat exchanger or the like during cooling operation or the like. For example, in the case of a wall-mounted air conditioner indoor unit, one end of a drain hose is connected to a drain water discharge port provided at the bottom of the drain pan. The other end of the drain hose is led out from the pipe insertion hole on the wall and placed at a position lower than the drain outlet of the air conditioner indoor unit, and the drain water is drained to the outside by gravity. There is.

The above-mentioned drain water discharge method is adopted, for example, when an air conditioner indoor unit is installed near the ceiling of the indoor side wall surface facing the balcony area in an apartment house such as an apartment. However, when the air conditioner indoor unit is installed on the indoor side wall surface of the indoor space on the back side adjacent to the indoor space facing the balcony area, for example, as shown in Patent Document 1, the air conditioner indoor unit and the balcony area Along with the refrigerant pipe that connects to the installed air conditioner outdoor unit, a drain hose connected to the drain water outlet of the air conditioner indoor unit is introduced from the ceiling surface near the installation of the air conditioner indoor unit into the space behind the ceiling. A so-called concealed piping method is implemented in which the drain hose and the refrigerant pipe arranged along the attic space are led out from the ceiling surface to the indoor space at a position near the indoor side wall surface facing the balcony area. The drain hose and the refrigerant pipe led out from the ceiling surface to the indoor space are formed through the wall portion facing the balcony area and led out to the outside from the piping hole.

Japanese Unexamined Patent Publication No. 2016-21812

In the above-mentioned concealed piping method, since the drain hose is arranged along the ceiling space higher than the drain water discharge port of the air conditioner indoor unit, a drain pump for pumping the drain water in the drain pan to the drain hose is required. Moreover, since the drain hose is arranged at a long distance and the number of construction steps is increased, there is an inconvenience that the construction cost increases.

In view of this situation, the main problem of the present invention is to shorten the drain arrangement distance and facilitate the construction even when the air conditioner indoor unit is installed on the indoor side wall surface of the indoor space on the back side away from the balcony area or the like. The point is to provide a connection guide structure capable of reducing the construction cost and a piping cover tool used for the connection guide structure.

The first characteristic configuration according to the present invention is a connection guide structure for connecting and guiding the drain hose of the air conditioning indoor unit to the drainage pipe outside the room through a pipe insertion hole formed through the wall portion.
It is possible to connect the pipe cover tool provided on the indoor side wall surface of the wall portion while covering the pipe insertion hole, the pipe connection portion of the pipe cover tool, and a portion lower than the pipe insertion hole in the drain pipe. A flexible insertion guide pipe is provided, and the pipe cover tool is provided with a hose insertion port for inserting the drain hose into the insertion guide pipe connected to the pipe connection portion from the indoor side. It is in the point that it is.

According to the above configuration, the drain hose of the air-conditioning indoor unit is inserted and guided from the indoor side to a portion of the outdoor drainage pipe partitioned by the wall portion, which is lower than the pipe insertion hole formed through the wall portion. One end of the flexible insertion guide tube is connected. The other end of the insertion guide pipe is connected to the pipe connection portion of the pipe cover tool provided on the indoor side wall surface of the wall portion in a state of covering the pipe insertion hole of the wall portion. Since the construction of the connection guide structure is completed in this state, when installing the air conditioner indoor unit on the indoor side wall of the wall, connect the drain hose of the air conditioner indoor unit from the hose insertion port of the piping cover. Insert into the insertion guide pipe connected to the part. As a result, the drain water generated during the cooling operation or the dehumidifying operation of the air conditioner indoor unit is smoothly drained from the drain hose to the drain pipe by gravity.

Even when the air conditioner indoor unit is installed on the indoor side wall surface of the indoor space on the back side adjacent to the indoor space facing the outside such as the balcony area, the drainage pipe on the outdoor side partitioned by the wall is used for drainage. Since water can be drained, the drain arrangement distance from the air conditioner indoor unit to the drain pipe can be shortened. Further, the drain arrangement path from the hose insertion port of the pipe cover to the drain pipe can be easily constructed only by connecting the insertion guide pipe between the drain pipe and the pipe connection portion of the pipe cover. Moreover, the drain piping construction of the air-conditioning indoor unit is completed only by inserting the drain hose along the insertion guide pipe from the hose insertion port of the piping cover tool provided on the side wall surface of the room.

Therefore, even when the air conditioner indoor unit is installed on the indoor side wall surface of the indoor space on the back side adjacent to the indoor space facing the outside, it is not necessary to use a drain pump, and the drain arrangement distance can be shortened and the construction can be performed. Since the simplification can be achieved, the construction cost can be reduced.

The second characteristic configuration according to the present invention is that the pipe cover tool has a mounting base material having the pipe connection portion and the hose insertion port, and the drain hose bending at the indoor opening side of the hose insertion port. It has a corner cover that can be detachably attached to the central part of the mounting base material while covering the hose portion, and a fitting mounting port for external fitting mounting on the mounting base side of the corner cover, and the mounting. It is provided with a decorative cover that covers the exposed portion of the base material.

According to the above configuration, after the drain hose is inserted into the hose insertion port of the mounting base material fixed to the side wall surface of the room, the drain hose bends at the center side portion of the mounting base material on the indoor opening side of the hose insertion port. Install the corner cover that covers the bent hose. The fitting mounting opening of the decorative cover is fitted and mounted on the mounting base side of the corner cover. When this decorative cover is attached, the exposed portion of the mounting base material can be covered in a good manner.

The third characteristic configuration according to the present invention is that a blind cover that closes the fitting mounting opening of the decorative cover can be mounted on the mounting base material when the corner cover is not mounted. It is in.

According to the above configuration, when there is no plan to install the air conditioner indoor unit, the fitting mounting port of the decorative cover can be covered in a good manner by attaching the blind cover to the mounting base material. When installing the air conditioner indoor unit, remove the blind cover and insert the drain hose of the air conditioner indoor unit through the hose insertion port of the obstructor. Simply attach the corner cover that covers the bent hose part of the drain hose that bends on the indoor opening side of the hose insertion port of the mounting base material, and fit the fitting mounting port of the decorative cover to the mounting base side of the corner cover. Piping work is completed.

The fourth characteristic configuration according to the present invention is that the mounting base material has an engagement position in which the wall portion engages with the opening peripheral edge portion of the pipe insertion hole from the hole radial direction, and the opening peripheral edge of the pipe insertion hole. The point is that an engaging portion that can be switched to and an engaging disengaging position that disengages from the portion inward in the hole radial direction is provided.

According to the above configuration, when the mounting base material provided with the pipe connection portion and the hose insertion port is mounted on the indoor side wall surface of the wall portion while covering the pipe insertion hole, the engaging portion of the mounting base material is disengaged. When the position is switched to the engaging position along the hole radial direction, the engaging portion engages with the opening peripheral edge portion of the pipe insertion hole of the wall portion from the hole radial direction. As a result, the mounting base material mounted on the pipe insertion hole of the wall portion can be easily temporarily fixed, so that the mounting work of the mounting base material can be easily performed.

The fifth characteristic configuration according to the present invention is that the engaging portion has a first locking piece capable of contacting the indoor side wall surface of the opening peripheral portion of the wall portion and a chamber of the opening peripheral portion of the wall portion. A second locking piece that can come into contact with the outer wall surface is provided, and a screw that is screwed in from the indoor side can be screwed into the first locking piece and the second locking piece, and the screw The point is that a fixing hole is formed for pulling and fixing the first locking piece and the second locking piece to the wall holding state with the screwing.

According to the above configuration, when the engaging portion of the mounting base material mounted in the pipe insertion hole of the wall portion is switched to the engaging position, the first locking piece and the second locking piece are on the peripheral edge of the opening of the wall portion. It will be in an engaged state where it can come into contact with the front and back of the part. In this state, when a screw is screwed into the fixing holes of the first locking piece and the second locking piece from the indoor side, the first locking piece and the second locking piece move as the screw advances. It is pulled and fixed to the wall holding state. As a result, even if the wall portion is a gypsum board, the mounting base material can be firmly mounted while suppressing the occurrence of cracks in the gypsum board.

The sixth characteristic configuration according to the present invention is that a drainage channel is formed at the lowermost portion of the mounting base material to collect the dew condensation water generated inside the piping cover and drain it to the outside. be.

According to the above configuration, when dew condensation water is generated inside the piping cover tool, the dew condensation water collects in the drainage channel formed at the lowest portion of the mounting base material and is discharged to the outside. Since the discharged condensed water flows down in a straight line along the side wall surface of the room, it is possible to detect early that the condensed water is generated inside the piping cover, and it is easy to treat the condensed water. It can be carried out.

The seventh feature configuration according to the present invention is the pipe cover tool used in the connection guide structure according to any one of the above-mentioned first to sixth feature configurations, and is the pipe connection portion and the hose insertion port. A corner cover that is detachably attached to the central portion of the mounting base material while covering the bent hose portion of the drain hose that bends on the indoor opening side of the hose insertion port, and the corner. It has a fitting mounting port for mounting on the mounting base side of the cover, and is provided with a decorative cover that covers the exposed portion of the mounting base material.

According to the above configuration, it is possible to provide a piping cover tool that exhibits the actions and effects described in the above-mentioned second characteristic configuration.

Perspective view showing a part of the building structure to be constructed of the connection guide structure An exploded perspective view of the drain piping structure Cross-sectional view of the main part of the drain piping structure An exploded perspective view of the front side of the mounting base material for the piping cover Perspective view of the state where the engaging part of the mounting base material is in the disengaged position. Perspective view of the state where the engaging part of the mounting base material is in the engaging position An exploded perspective view (a) of the drain piping structure when the blind cover of the piping cover is attached and a perspective view (b) when the blind cover is attached. Front view (a), side view (b), rear view (c), plan view (d) of the mounting base material of the piping cover tool Top view (a), rear view (b) of the decorative cover of the piping cover tool Top view (a), rear view (b) of the blind cover of the piping cover

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a connection guide structure for the drain hose 3 in the air conditioning indoor unit A1 of the air conditioner A constructed in a condominium or the like. In an apartment house, a plurality of indoor spaces R such as a living room, a living room, and a kitchen are generally formed in an intermediate area partitioned between a common passage area belonging to an external environment and a balcony area. In the present embodiment, an example is shown in which the air conditioner indoor unit A1 is attached to the indoor side wall surface 1a of the indoor space R on the back side adjacent to the indoor space (not shown) facing the balcony area.

In the case of this case, as shown in FIG. 1, the wall portion 1 provided with the indoor side wall surface 1a to which the air conditioner indoor unit A1 is attached forms a partition between the indoor space R on the back side and the pipe space PS on the outdoor side. There is. A shared vertical drainage pipe 2 that penetrates the floor slabs of each level along the vertical direction is arranged in the pipe space PS on the outdoor side. Drain water from a flexible drain hose 3 (see FIGS. 2 and 3) connected to a drain water discharge port (not shown) of the air conditioner indoor unit A1 is located at a portion corresponding to each layer of the drain pipe 2. A merging joint 2A through which the water flows is provided. The merging joint 2A is arranged at a position lower than the pipe insertion hole 4 (see FIG. 2) formed through the wall portion 1 with an inner diameter through which the drain hose 3 can be inserted with a margin.

Further, in the case of the above example, the refrigerant pipe 5 and the electrical wiring connecting the air conditioner indoor unit A1 and the air conditioner outdoor unit A2 of the air conditioner A are arranged in a concealed state in the space behind the ceiling between the floor slab and the ceiling material. It is constructed by the so-called concealed piping method. Therefore, in the space behind the ceiling, a piping duct and a piping sheath pipe for collectively arranging the refrigerant pipe 5 and the electrical wiring are arranged in advance.

Next, the drain pipe structure including the connection guide structure for connecting the drain hose 3 of the air conditioning indoor unit A1 to the drain pipe 2 of the pipe space PS through the pipe insertion hole 4 of the wall portion 1 will be described in detail.
As shown in FIGS. 1 to 3, of the drain hoses 3 arranged from the drain water discharge port of the air conditioner indoor unit A1 to the merging joint 2A of the drain pipe 2, along the indoor side wall surface 1a of the wall 1. A straight tubular two-piece synthetic resin piping cover 6 that covers the linear hose portion 3A arranged in the vertical direction, and a drain hose 3 that bends at the pipe insertion hole 4 and the indoor opening side of the pipe insertion hole 4. A pipe cover tool B made of synthetic resin that covers the first bent hose portion 3B of the above, and a merging joint 2A of the pipe connection portion 24 and the drain pipe 2 of the mounting base material B1 described later, which is a constituent member of the pipe cover tool B. A flexible bellows-shaped synthetic resin insertion guide pipe 7 that covers the second bent hose portion 3C of the drain hose 3 located between the drain hoses 3 is provided.

As the piping cover 6 having a two-divided structure, various forms have been conventionally used, and any form of the piping cover 6 can be preferably used. As shown in FIGS. 1 and 3, the piping cover 6 used in the present embodiment is attached with a substantially upward U-shape having a flat cross-sectional shape fixed to the indoor side wall surface 1a of the wall portion 1 with screws. The cross-sectional shape is approximately U, which can be detachably engaged and mounted on the base 6A and the mounting base 6A in an externally fitted state, and forms a linear piping space 6C between the base 6A and the mounting base 6A at the time of mounting. It is composed of a straight line cover body 6B having a U-shape or a substantially U-shape, and is configured to be internally fitted and connected to a corner cover B2, which will be described later, which is a constituent member of the piping cover tool B, from the direction of the cover axis.

As shown in FIG. 2, the pipe cover tool B includes a synthetic resin mounting base material B1 that is fitted into the pipe insertion hole 4 of the indoor side wall surface 1a of the wall portion 1 from the indoor side in a fitted state, and the mounting base material. FIG. 7 shows a corner cover B2 made of synthetic resin that can be detachably attached to the central portion of B1, and a decorative cover B3 made of synthetic resin that can be detachably attached to cover at least the exposed portion of the attachment base material B1. As described above, when the corner cover B2 is not attached, the synthetic resin blind cover B4 that can be detachably attached while the fitting attachment opening 61 of the decorative cover B3 is closed is provided.

As shown in FIGS. 3, 4, and 8, the mounting base material B1 is fitted into the pipe insertion hole 4 of the wall portion 1 so as to be detachably fitted in a substantially sliding state from the indoor side along the front-rear direction. The tubular portion 20, the bottom wall portion 21 integrally extending inward in the radial direction from the rear end portion of the fitting tubular portion 20, and the radial direction from the front end portion of the fitting tubular portion 20. A collar portion 22 that is integrally projected on the outer side is provided. The flange portion 22 is configured to be able to come into contact with the indoor side wall surface 1a of the wall portion 1 from the front-rear direction.

As shown in FIGS. 3, 4, and 8, a hose insertion port 23 for inserting the drain hose 3 from the indoor side is formed in the central portion of the bottom wall portion 21 of the mounting base material B1. Further, as shown in FIGS. 3 and 8, the other end of the lateral guide tube portion 7A of the insertion guide tube 7 is detachably inserted and connected to the opening peripheral edge of the hose insertion port 23 on the back surface of the bottom wall portion 21. The pipe connecting portion 24 to be formed is formed so as to project. Although not shown, the pipe connecting portion 24 is engaged with the valley portion of the other end of the insertion guide pipe 7 which is inserted and connected from the outside in the pipe radial direction to prevent the insertion guide pipe 7 from coming off. A lock operation mechanism is provided that can be switched between a locked state in which the insertion guide tube 7 is used and an unlocked state in which the insertion guide tube 7 is released from the valley portion in the pipe radial direction.

As shown in FIGS. A mounting recess 26 that can be inserted and arranged in contact with the inner wall surface 1a is notched. With this configuration, as shown in FIG. 3, the mounting base 51 of the corner cover B2 is inserted and arranged with respect to the flange portion 22 of the mounting base B1, and the mounting base B1 and the mounting base 51 of the corner cover B2 are arranged. It can be securely fixed and connected with 1 screw 27. Nevertheless, since the mounting base 51 abuts on the indoor side wall surface 1a of the wall portion 1 in the mounting recess 26 formed in the flange portion 22 of the mounting base material B1, the flange portion 22 of the mounting base material B1 and the mounting base 51 Can be attached in a good-looking manner without a gap between the side wall surface 1a and the interior side wall surface 1a.

As shown in FIGS. 3 and 4, among the fitting cylindrical portions 20 of the mounting base material B1, the mounting base 51 of the corner cover B2 is first placed at the central portion in the circumferential direction of the front end surface 20a facing the mounting recess 26. A first mounting hole 28 for screwing and fixing with a screw (an example of a screw) 27 is formed.
As shown in FIGS. 4, 7, and 10, a pair of second hooks projecting from the left and right sides of the back surface of the blind cover B4 are provided on both sides of the front end surface 20a of the fitting tubular portion 20 in the circumferential direction. A second engaging hole 30 is formed in which the clasp 72 is engaged in a disengaged state. In the present embodiment, the second engaging holes 30 are formed at two locations on the front end surface 20a of the fitting cylindrical portion 20, but the present invention is not limited to this configuration, and for example, the front end of the fitting tubular portion 20 is formed. It may be formed at one place or three places on the surface 20a. Further, the second engaging hole 30 may be formed in a portion other than the front end surface 20a of the fitting cylindrical portion 20. Along with this, the number and formation positions of the second locking claws 72 on the blind cover B4 side are also changed.

As shown in FIGS. 2, 4, and 9, a pair of first locking claws projecting from four locations in the circumferential direction of the collar portion 22 of the mounting base material B1 at four locations in the circumferential direction on the back surface of the decorative cover B3. A first engaging hole 29 is formed in which the 62 is engaged in a disengageable state. In the present embodiment, the first engaging holes 29 are formed at four locations in the circumferential direction of the collar portion 22, but the present invention is not limited to this configuration, and for example, the first engaging holes 29 are formed at two locations in the circumferential direction or. It may be formed at 3 or 5 or more locations. Along with this, the number of the first locking claws 62 on the decorative cover B3 side is also changed.

As shown in FIGS. 4 to 6 and 8, in the flange portion 22 of the mounting base material B1, the mounting base material B1 is placed on the wall portion 1 at the center position in the circumferential direction between the adjacent first engagement holes 29. A second mounting hole 33 for screwing and fixing with a second screw (an example of a screw) 32 is formed. As shown in FIGS. 4 to 6 and 8, each of the three locations where the second mounting holes 33 are formed is from the hole radial direction with respect to the opening peripheral edge portion 1c of the pipe insertion hole 4 of the wall portion 1. An engaging portion 40 that can be switched between an engaging position for engaging and an engaging disengaging position for disengaging inward in the hole radial direction from the opening peripheral edge portion 1c of the pipe insertion hole 4 of the wall portion 1 is provided.

Therefore, when the mounting base material B1 provided with the pipe connecting portion 24 and the hose insertion port 23 is mounted on the indoor side wall surface 1a of the wall portion 1 while covering the pipe insertion hole 4, it is mounted in the pipe insertion hole 4 of the wall portion 1. When the engaging portion 40 of the mounting base material B1 is switched from the disengaging position to the engaging position along the hole radial direction, the engaging portion 40 becomes the opening peripheral edge portion 1c of the pipe insertion hole 4 of the wall portion 1. On the other hand, it engages from the hole diameter direction (see FIG. 4). As a result, the mounting base material B1 mounted in the pipe insertion hole 4 of the wall portion 1 can be easily temporarily fixed, so that the mounting work of the mounting base material B1 can be facilitated and made more efficient.

As shown in FIGS. 3 to 6, each of the engaging portions 40 is an engaging member 41 made of synthetic resin capable of engaging with the opening peripheral edge portion 1c of the pipe insertion hole 4 of the wall portion 1, and the engaging member 41. It is composed of a movement guide portion 42 that guides the movement in the hole diameter direction.
As shown in FIG. 4, the engaging member 41 has a sliding plate portion 41A slidable along the front surface of the bottom wall portion 21 of the mounting base material B1 and an inner surface of the pipe insertion hole 4 of the wall portion 1. The engagement position regulating plate portion 41B that can be brought into contact with the hole diameter direction, the first locking piece 41C that can be brought into contact with the indoor side wall surface 1a of the opening peripheral edge portion 1c of the pipe insertion hole 4 in the wall portion 1, and the wall portion 1 Along the hole diameter direction formed in the bottom wall portion 21 of the mounting base material B1 and the second locking piece 41D capable of contacting the outdoor wall surface 1b on the pipe space PS side of the opening peripheral edge portion 1c of the pipe insertion hole 4 in the above. A retaining claw 41E that engages with the slit 42A in a retaining state is provided as a main configuration.
As shown in FIGS. 3 to 6, the engaging position regulating plate portion 41B is integrally formed at one end of the sliding plate portion 41A in the hole radial direction, and is a position regulating surface and a wall of the engaging position regulating plate portion 41B. The first locking piece 41C and the second locking piece 41D are integrally formed at portions at intervals substantially corresponding to the wall thickness of the portion 1. On the sliding contact surface side of the sliding plate portion 41A, a pair of retaining claws 41E that can be reduced and deformed against the elastic restoring force to a width that allows the slit 42A to pass through are integrally formed. Further, the reinforcing plate portion 41F is integrally formed over the engaging position regulating plate portion 41B and the sliding plate portion 41A.
Further, as shown in FIGS. 3 to 6, a second portion formed on the tip portion of the first locking piece 41C and the tip portion of the second locking piece 41D and on the flange portion 22 of the mounting base material B1. A second screw 32 screwed from the indoor side can be screwed into the portion corresponding to the mounting hole 33, and the first locking piece 41C and the second locking piece are screwed along with the screwing of the second screw 32. Fixing holes 41c and 41d are formed to pull and fix the 41D to the wall holding state.

As shown in FIGS. 4 to 6, the movement guide portion 42 surrounds at least both sides of the movement region of the engaging member 41 and the slit 42A formed in the bottom wall portion 21 of the mounting base material B1 along the hole radial direction. The movement guide wall portion 42B and the fitting guide groove 42C formed in a recess on the surface of the flange portion 22 of the mounting base material B1 in a state where the first locking piece 41C of the engaging member 41 is fitted from the hole radial direction are formed. It is prepared.
The first locking piece 41C of the engaging member 41 is fitted into the fitting guide groove 42C of the flange portion 22 of the mounting base material B1, and the engaging member 41 is engaged with the inner surface of the pipe insertion hole 4 of the wall portion 1. When the alignment plate portion 41B comes into contact with the engaging member 41, the engaging member 41 is positioned at the engaging position in the moving region. Further, the first locking piece 41C of the engaging member 41 is radially inwardly detached from the fitting guide groove 42C of the flange portion 22 to reach the tips of the first locking piece 41C and the second locking piece 41D. When the radius becomes the same as or smaller than the radius of the outer peripheral surface of the fitting tubular portion 20 of the mounting base material B1, the engaging member 41 is located at the disengaging position of the moving region.

Then, when the engaging portion 40 of the mounting base material B1 mounted in the pipe insertion hole 4 of the wall portion 1 is switched to the engaging position, the first locking piece 41C and the second locking piece 41D become the wall portion 1. The engagement state is such that the front and back surfaces of the opening peripheral edge portion 1c of the above can be brought into contact with each other. In this state, the fixing holes 41c and 41d of the first locking piece 41C and the second locking piece 41D and the second mounting hole 33 formed in the flange portion 22 of the mounting base material B1 are viewed from the indoor side. Screw in 2 screws 32. As the second screw 32 is screwed, the first locking piece 41C and the second locking piece 41D are pulled and fixed in the wall holding state. As a result, even if the wall portion 1 is a gypsum board, the mounting base material B1 can be firmly mounted while suppressing the occurrence of cracks in the gypsum board.

As shown in FIGS. 4 and 8, on the tip end side of both side plate portions 42b in each movement guide wall portion 42B of the mounting base material B1, the flange portion 52d of the end cover body 52, which will be described later, constitutes the corner cover B2. A high-positioned first receiving surface 44 that receives and supports the blindfold cover B4 and a low-positioned second receiving surface 45 that receives and supports the reinforcing rib 71 on the outer peripheral edge of the blind cover B4 are formed in a stepped shape.

As shown in FIGS. 4 and 8, of the fitting guide grooves 42C of the flange portion 22 of the mounting base material B1, the fitting guide groove 42C located at the lowest position in the mounting posture is inside the piping cover tool B. It is also configured as a drainage channel 10 that collects the generated dew condensation water and discharges it to the outside. The drainage channel 10 is formed as a recess in a pentagonal shape opposite to the front view, which has a width larger than the dimension between the outer surfaces of the side plate portions 42b of the movement guide wall portion 42B located at the lowermost portion.
With the above configuration, when dew condensation water is generated in the internal space of the mounting base material B1, the dew condensation water flows into the drainage channel 10 along the outer surface of both side plate portions 42b of the movement guide wall portion 42B located at the lowest portion. Then, the inflowing dew condensation water flows down along the outer edge of the first locking piece 41C of the engaging member 41 that has entered the fitting guide groove 42C which is the drainage channel 10, and the collected dew condensation water flows down in the drainage channel 10. It is discharged to the outside from the drainage port 10a at the lowermost end of the. Since the discharged dew condensation water flows down in a straight line along the indoor side wall surface 1a, it is possible to detect early that dew condensation water is generated inside the mounting base material B1 of the piping cover tool B. Condensed water can be easily treated.

As shown in FIGS. 1 to 3, the corner cover B2 is a mounting base that is inserted into and arranged in the mounting recess 26 of the flange portion 22 of the mounting base material B1 in a state of being in contact with the indoor side wall surface 1a of the wall portion 1. 51 and an end cover body 52 that covers the first bent hose portion 3B of the drain hose 3 that bends at the indoor opening side of the hose insertion port 23 formed in the bottom wall portion 21 of the mounting base material B1 are provided. ing.
As shown in FIGS. 2 and 3, the mounting base 51 is formed with a third mounting hole 51a for screwing and fixing with the first screw 27 on the indoor side wall surface 1a of the wall portion 1, and the mounting base 51 and the end portion thereof. An engaging means (not shown) for detachably engaging and holding the end cover body 52 with respect to the mounting base 51 is provided at a portion facing the cover body 52.
As shown in FIGS. 2 and 3, the end cover body 52 is formed by integrally molding the ceiling wall portion 52a, the left and right side wall portions 52b, and the semi-cylindrical side wall portion 52c continuous to the tip side thereof. There is. Further, a flange portion 52d that projects outward in a substantially U shape is integrally formed on both side wall portions 52b and the semi-cylindrical side wall portion 52c. The flange portion 52d of the end cover body 52 is stably supported in a contact state with the first receiving surface 44 at a high position on the tip end side of both side plate portions 42b in each movement guide wall portion 42B of the mounting base material B1.

As shown in FIGS. 1 to 3 and 9, the decorative cover B3 includes a flat decorative cover body 60 having a contour shape substantially the same as the contour shape of the flange portion 22 of the mounting base material B1. The decorative cover body 60 is formed with a substantially U-shaped fitting mounting port 61 for external fitting and mounting on both side wall portions 52b and the semi-cylindrical side wall portion 52c of the end cover body 52. Further, at four locations in the circumferential direction of the back surface of the decorative cover body 60, first locking that can be engaged with and disengaged from the first engaging holes 29 formed at four locations in the circumferential direction of the flange portion 22 of the mounting base material B1. The claw 62 is integrally formed. With this configuration, the decorative cover body 60 is detachably attached to the mounting base material B1 while covering the flange portion 52d of the end cover body 52 and the exposed portion of the mounting base material B1.
Further, an inner reinforcing rib 63 is integrally formed on the peripheral edge of the fitting mounting opening 61 on the back surface of the decorative cover B3, and an outer reinforcing rib 64 is integrally formed on the outer peripheral edge on the back surface of the decorative cover B3.

As shown in FIG. 7, the blind cover B4 includes a blind cover body 70 having a contour shape substantially the same as the contour shape of the fitting mounting opening 61 of the decorative cover B3. The blind cover body 70 is internally fitted in the fitting mounting opening 61 of the decorative cover B3 in a state where there is substantially no gap and in a state where it is substantially flush with the surface of the decorative cover B3. In this inner fitting state, the reinforcing rib 71 on the outer peripheral edge of the blind cover body 70 abuts on the second receiving surface 45 at the bottom position on the tip end side of both side plate portions 42b in each movement guide wall portion 42B of the mounting base material B1. Stable support in the state.
Further, as shown in FIG. 10, on the back surface of the blind cover body 70, the portion corresponding to the front end surface 20a of the fitting tubular portion 20 of the mounting base material B1 is the front end surface 20a of the fitting tubular portion 20. A second locking claw 72 that can be engaged with and disengaged from the pair of second engaging holes 30 formed in the above is integrally formed. Further, at the curved center position of the blind cover B4, an engaging projection 73 that engages with the engaging recess 65 formed at the curved center position of the outer reinforcing rib 64 of the decorative cover B3 is formed.

As shown in FIG. 3, the insertion guide pipe 7 is composed of a sheath pipe which is an example of a flexible bellows pipe, and one end of the insertion guide pipe 7 is connected to the merging joint 2A of the drain pipe 2 in a watertight state. It is inserted and connected to the large-diameter connecting portion 9a of the resin connecting member 9. The joint between one end of the insertion guide tube 7 and the large-diameter connecting portion 9a of the connecting member 9 is also sealed in a watertight state. The other end of the insertion guide tube 7 is inserted and connected to the tube connecting portion 24 of the mounting base material B1. A tubular heat insulating material 8 is attached to the exposed portion of the insertion guide tube 7 in an exterior state.
By connecting the merging joint 2A of the drain pipe 2 and the pipe connecting portion 24 of the mounting base material B1 with the insertion guide pipe 7, the drain arrangement from the hose insertion port 23 of the mounting base material B1 to the merging joint 2A of the drain pipe 2 The setting route can be easily constructed. Moreover, the drain piping construction of the air-conditioning indoor unit A1 is completed only by inserting the drain hose 3 along the inside of the insertion guide pipe 7 from the hose insertion port 23 of the mounting base material B1 provided on the indoor side wall surface 1a.
In the present embodiment, as shown in FIG. 3, the tip of the drain hose 3 is arranged at an upper and lower intermediate position of the vertical guide pipe portion 7B of the insertion guide pipe 7. Therefore, a part of the drain water discharged from the drain hose 3 flows into the connecting member 9 along the inner peripheral surface on the lower side of the vertical guide pipe portion 7B, and is drained to the merging joint 2A of the drain pipe 2. NS.
It is also included in the embodiment of the present invention that the tip of the drain hose 3 is inserted and arranged in the connecting member 9 or in the merging joint 2A of the drain pipe 2.

[Other Embodiments]
(1) In the above-described embodiment, the fitting mounting port 61 of the decorative cover B3 is a flange portion of a side wall surface composed of both side wall portions 52b and a semi-cylindrical side wall portion 52c of the end cover body 52. The decorative cover B3 is fitted and mounted in the vicinity of the 52d so as to cover the flange portion 52d of the end cover body 52 and the exposed portion of the mounting base material B1, but is limited to this configuration. is not it. For example, the fitting mounting port 61 of the decorative cover B3 is configured to have a size along the outer peripheral edge of the flange portion 52d of the end cover body 52 so as to cover only the exposed portion of the mounting base material B1. May be good.

(2) In the above-described embodiment, the flexible drain hose 3 connected to the drain water discharge port of the air conditioner indoor unit A1 is composed of a bellows tube such as a sheath tube, but at least the inner peripheral surface is smooth. It may be composed of a flexible hose made of resin formed on a cylindrical surface.

(3) In the above-described embodiment, engaging portions 40 that can be engaged and disengaged from the hole radial direction with respect to the opening peripheral edge portion 1c of the pipe insertion hole 4 of the wall portion 1 are provided at three locations in the circumferential direction of the mounting base material B1. However, the engaging portions 40 may be provided at one, two, or four or more locations in the circumferential direction of the mounting base material B1.

(4) In the above-described embodiment, the mounting base material B1 is provided with an engaging portion 40 that can be engaged and disengaged from the hole radial direction with respect to the opening peripheral edge portion 1c of the pipe insertion hole 4 of the wall portion 1. The mounting base material B1 may be fixed to the wall portion 1 by an appropriate fixing means such as a screw or an adhesive without providing the engaging portion 40.

(5) In the above-described embodiment, the mounting base 51 of the corner cover B2 hits the indoor side wall surface 1a of the wall portion 1 at the connection side portion corresponding to the piping cover 6 in the flange portion 22 of the mounting base material B1. Although the mounting recess 26 is formed so that it can be inserted and arranged in the contacted state, the present invention is not limited to this configuration. For example, in the flange portion 22 of the mounting base material B1, the thickness of the portion where the mounting base 51 of the corner cover B2 is vertically arranged in the inserted state may be made thinner than the thickness of the other portion.
Also in this case, the flange portion 22 of the mounting base material B1 and the mounting base 51 can be mounted in a good-looking state while suppressing the formation of a gap between the indoor side wall surface 1a.

1 Wall part 1a Indoor side wall surface 1b Outdoor outer wall surface 1c Opening peripheral part 2 Drain pipe 3 Drain hose 3B Bending hose part (1st bending hose part)
4 Piping insertion hole 7 Insertion guide pipe 10 Drainage channel 23 Hose insertion port 24 Pipe connection 32 Screw (2nd screw)
40 Engagement part 41C 1st locking piece 41D 2nd locking piece 41c Fixing hole 41d Fixing hole A1 Air conditioner indoor unit B Piping cover tool B1 Mounting base material B2 Corner cover B3 Decorative cover B4 Blind cover

Claims (6)

It is a connection guide structure that guides the drain hose of the air conditioner indoor unit to the drainage pipe outside the room through the pipe insertion hole formed through the wall.
It is possible to connect the pipe cover tool provided on the indoor side wall surface of the wall portion while covering the pipe insertion hole, the pipe connection portion of the pipe cover tool, and a portion lower than the pipe insertion hole in the drain pipe. A flexible insertion guide pipe is provided, and the pipe cover tool is provided with a hose insertion port for inserting the drain hose into the insertion guide pipe connected to the pipe connection portion from the indoor side. Be ,
The piping cover tool includes the mounting base material provided with the pipe connecting portion and the hose insertion port, and the mounting base material in a state of covering the bent hose portion of the drain hose that bends on the indoor opening side of the hose insertion port. A decorative cover that has a corner cover that can be detachably attached to the central part of the hose, and a fitting attachment port for external fitting attachment to the attachment base side of the corner cover, and covers the exposed portion of the attachment base material. And, the connection guidance structure provided. Wherein the mounting substrate, when said corner cover is not attached, the connection guide structure according to claim 1, wherein the blind cover to close the fitting mounting opening of the decorative cover is configured to be mounted. The mounting base material has an engaging position in which the wall portion engages with the opening peripheral edge portion of the pipe insertion hole from the hole radial direction and detaches from the opening peripheral edge portion of the pipe insertion hole inward in the hole radial direction. The connection guide structure according to claim 1 or 2, wherein an engaging portion that can be switched between the disengaging position and the disengaging position is provided. The engaging portion has a first locking piece capable of contacting the indoor side wall surface of the opening peripheral edge portion of the wall portion and a second engaging portion capable of contacting the outdoor side wall surface of the opening peripheral edge portion of the wall portion. A stop piece is provided, and a screw screwed from the indoor side can be screwed into the first locking piece and the second locking piece, and the first locking is performed as the screw is screwed. The connection guide structure according to claim 3, wherein a fixing hole is formed for pulling and fixing the piece and the second locking piece to the wall holding state. Wherein the bottom portion of the mounting substrate according to any one of claims 1 to 4, drainage channel flowing down discharged outside by collecting the condensed water generated inside of the pipe cover member is formed Connection guidance structure. The pipe cover tool used for the connection guide structure according to any one of claims 1 to 5 , wherein the mounting base material having the pipe connection portion and the hose insertion port, and the interior of the hose insertion port. A corner cover that is detachably attached to the central portion of the mounting base material while covering the bent hose portion of the drain hose that bends on the opening side, and a fitting for externally fitting to the mounting base side of the corner cover. A piping cover tool having a mounting port and provided with a decorative cover that covers an exposed portion of the mounting base material.

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