JP2017211038A - Connection structure of duct for piping to building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection structure of a duct for piping to a building, having high water cut-off performance, and capable of easily visually confirming caulking at any time, and being applied to buildings in general.SOLUTION: A connection structure has a connection tool (10) for connecting a duct (1) for piping to an opening portion for piping (2a) of a building (2), and a hood-shaped cover (20) including an eaves-shaped roof body (22) covering an upper part of the connection tool (10). The connection tool (10) has a caulked object portion (11c) to perform caulking to a wall surface (2b) around the opening portion for piping (2a), on an outer peripheral end portion of an upper part and a side part. The hood-shaped cover (20) has a frame body (21) fixed to the wall surface (2b) for supporting the roof body (22), and the frame body (21) has the caulked object portion (21b) to perform the caulking to the wall surface (2b). The roof body (22) is detachably disposed on the frame body (21) in a state of being disposed on the wall surface (2b).SELECTED DRAWING: Figure 3

Description

  The present invention relates to a structure for connecting a duct for piping to cover a refrigerant pipe for an air conditioner laid on the roof of a building.

  In building air conditioning equipment, indoor units are generally installed in each room of a building, and a large number of outdoor units connected to each indoor unit by refrigerant piping are arranged side by side in a predetermined section on the roof of the building. For this reason, the refrigerant pipes connecting the indoor and outdoor units are gathered together in a pipe shaft that penetrates the building in the height direction, and the pipe opening of the pipe drawer building (commonly called pigeon hut) installed on the rooftop It is pulled out from the club to the rooftop. The refrigerant pipe drawn out to the roof is covered and laid by a duct for protecting the refrigerant pipe itself and the heat insulating material covering the refrigerant pipe.

  In this case, the connection structure of the duct for piping to the building (the pigeon hut) connects the piping to the opening for piping using a connector, and prevents rainwater from entering the building and the duct for piping. Therefore, caulking is performed between the connection tool and the wall surface around the opening for piping. Moreover, since this coking has a problem that it deteriorates as the direct sunlight and wind and rain are strong, there are some measures that prevent such deterioration. For example, the thing of patent document 1 has covered the caulking between a connector and the wall surface around the opening part for piping with the cover for sealing. Moreover, although the thing described in patent document 2 uses the food box as a connection tool, the coffin is provided integrally with the wall of the building above this food box. In this document, there is no specific description of the purpose and configuration of the kite, but it is thought that the presence of the kite reduces the direct sunlight and wind and rain on the caulking material.

JP-A-8-4951 Japanese Patent Laid-Open No. 10-318443

  However, the above prior art has the following problems. In the device described in Patent Document 1, once the sealing cover is attached, it cannot be removed, so that the caulking cannot be visually confirmed at the time of completion of construction or periodic maintenance. In addition, since the caulking part is covered with a sealing cover, it is difficult to keep the coking amount constant, and it is difficult to ensure stable performance. Moreover, since the thing of patent document 2 is integrally formed with the wall of a building, it cannot apply to the field which does not have such a fence, and lacks versatility. In addition, it is unclear whether the size and arrangement are appropriate for preventing coking deterioration.

  The present invention has been made in view of the problems in the prior art, and has a structure for connecting a duct for piping applicable to buildings in general, which has a high water-stopping performance and can be easily visually checked for coking at any time. The purpose is to provide.

  A connection structure for a duct for piping that solves the above problems includes a connector for connecting the duct for piping to the opening for piping of the building, and a bowl-shaped roof covering the upper side of the connector. A hood-like cover, and the connector has a caulking target portion for caulking between the upper and side outer peripheral ends with the wall surface around the piping opening, and the hood-like cover comprises: The frame has a frame fixed to the wall surface for supporting the roof body, the frame body has a caulking target portion for caulking with the wall surface, and the roof body is attached to the wall surface. It is characterized by being detachably attached to the attached frame.

  According to the connection structure of the piping duct having such a configuration to the building, the roof of the hood-like cover can reduce direct sunlight and wind and rain hitting the caulk between the connector and the wall surface from above. . Thereby, while being able to maintain a water stop performance highly, deterioration of the caulking of a connection tool can be suppressed and a water stop performance can be maintained high. Further, the hood-like cover is provided on the outer peripheral side of the connection tool, and can be easily installed in a building without a fence, so that it has versatility applicable to any building. Further, since the roof body of the hood-like cover can be removed while the frame body of the hood-like cover is attached to the wall surface, the state of each coking can be easily visually confirmed at the time of completion of construction and periodic maintenance. The water stoppage on the wall of the building is doubly formed by the caulking between the connector and the wall and the caulking between the frame and the wall. The performance can be increased. In addition, without removing the roof body, the caulking between the connector located below the roof body and the wall surface is confirmed by checking the deterioration state of the coking applied between the frame body and the wall surface. There is also the convenience that it is possible to estimate the deterioration state of the.

Moreover, it is preferable that the said roof body is formed in the inclination part at which a front-end | tip part inclines toward the front downward direction.
According to such a configuration, rainwater hardly collects in the roof body. Therefore, when the roof body is made of metal, the progress of corrosion can be delayed.

Moreover, it is preferable that the said roof body is extended to the position from which the front-end | tip becomes lower than the caulking object part of the upper outer periphery edge part in the said connection tool.
According to such a structure, the direct sunlight with respect to the caulking object part of the upper outer peripheral edge part in a connection tool can be interrupted. Moreover, the hit of the wind and rain with respect to this coking object part can be reduced significantly.

  In addition, the caulking target portion of the frame body is a bent portion in which the tip of a plate-like portion that is in close contact with the wall surface is bent forward so as to form a groove portion for caulking work having a square cross section with the wall surface. It is preferable that

According to such a structure, since square coking can be used for the caulking object part of a frame, water stop performance becomes favorable.
Moreover, it is preferable that the said roof body is detachably attached with respect to the said frame body so that the rear part of the said roof body may not cover the upper surface of the said groove part.

  According to such a structure, in the state which attached the roof body, the caulking performed to the caulking object part of a frame upper part can be visually confirmed without removing a roof body. Further, the mounting of the roof body is not hindered by caulking.

  Further, the frame body has a horizontal frame portion that supports the roof body, the horizontal frame portion has an extending portion that extends forward from the bent portion, and the roof body has the extension portion. The mounting surface portion is fixed to the mounting portion, and the mounting surface portion is detachably fixed to the extending portion by fixing means so that the rear end portion of the mounting surface portion does not cover the upper surface of the groove portion, It is preferable that it is detachably attached to the frame.

  According to such a configuration, it is possible to visually confirm the caulking applied to the caulking target portion at the upper part of the frame without removing the roof body, and realize a configuration in which the roof body can be detachably attached with a simple structure. can do.

  Moreover, it is preferable that the said roof body is detachably attached with respect to the said frame body so that the rear part of the said roof body may cover the upper surface of the said groove part, without interfering with the caulking of the said frame body.

  If comprised in this way, a roof body can be attached, without waiting for the drying of the coking given to a groove part. Further, direct sunlight and wind and rain can be prevented against this coking. Therefore, the lifetime of this coking can be extended. In addition, when confirming the state of this caulking, it can confirm visually easily by removing a roof body.

  The frame body has a side frame portion located on a side of the connector, and the side frame portion has an extending portion extending forward with respect to the wall surface. It is preferable that it is configured so as to reduce direct sunlight to the caulking target portion of the outer peripheral end portion on the side of the connection tool.

  If comprised in this way, since a frame has a side frame part, the flow of the wind and rain to the caulking of the side outer periphery edge part in a connector can be suppressed by the caulking given to a side frame part. Moreover, since the direct sunlight to the caulking of the side outer peripheral end portion of the connecting tool can be reduced by the extending portion of the side frame portion, the deterioration of the caulking of the side outer peripheral end portion of the connecting tool is suppressed. Can do.

  According to the connection structure of the duct for piping to the building, it is possible to maintain a high water-stopping performance, have versatility to the building, and easy to install the hood-like cover. Moreover, the state of caulking of the hood-like cover and the connecting device can be easily visually confirmed at any time.

The disassembled perspective view of the connection structure to the building of the duct for piping which concerns on this Embodiment. The external appearance perspective view of the connection structure. AA sectional drawing in FIG. BB sectional drawing in FIG. The perspective view of the hood-like cover seen from the front. The disassembled perspective view of the hood-like cover seen from the front. CC sectional drawing in FIG. Sectional drawing of the roof periphery of the hood-shaped cover which concerns on a modification. Sectional drawing of the roof body periphery of the hood-shaped cover which concerns on another modification. Sectional drawing of the roof body periphery of the hood-shaped cover which concerns on another another modification.

  Hereinafter, the connection structure to the building of the duct for piping which concerns on embodiment of this invention is demonstrated. In addition, this invention is not limited to the illustration described below, but is shown by a claim, and it is intended that all the changes within the meaning and range equivalent to a claim are included. The

  As shown in FIG. 1 to FIG. 3, the piping duct connection structure according to the present embodiment connects the piping duct 1 to the piping opening 2 a of the building 2 (a building for pipe drawing). It is a structure to do. More specifically, the duct 1 for piping is connected using the connector 10 similarly to the conventional one, and the hood-like cover 20 is attached to the outer peripheral side thereof. Hereinafter, these constituent members will be described in detail. In this specification, when referring to the left, right, up, down, and front-rear directions, the direction of the piping opening 2a as viewed from the outside of the wall surface 2b is assumed. The left-right direction, the up-down direction, and the front-rear direction shown in FIG.

  As shown in FIG. 2, the duct 1 for piping has a stepped portion formed on the upper and lower sides of the side plate 1a and a stepped side portion of the top plate 1b. The strength of the side plate 1a and the top plate 1b is increased. It is formed in a shape that is considered to improve. The piping duct 1 in the present embodiment does not have a bottom plate, but may have a bottom plate. In FIG. 1 and FIG. 2, for simplification of the drawing, a portion far from the connector 10 of the piping duct 1 is omitted, and only a portion close to the connector 10 of the piping duct 1 is illustrated. The piping duct 1 is actually connected at the front end side of the illustrated piping duct 1 so that the straight duct extends to a predetermined position after height adjustment using an elevational elbow. ing.

  As shown in FIG. 1, the connector 10 includes a water stop plate 11 fixed to a wall surface 2 b around the piping opening 2 a, a wall plate 12 fixed to the front side of the water stop plate 11, and a water stop plate 11. And a packing 13 or the like sandwiched between the wall 2b.

  As can be seen from FIGS. 1 and 3, the water stop plate 11 includes a joining cylinder portion 11 a inserted into the piping duct 1 and a mounting plate portion 11 b extending around the periphery. As can be seen from FIG. 2 and FIG. 3, the upper surface and the side surface of the joining cylinder portion 11 a are inserted into the piping duct 1 in a fitted state, and the lower surface is the upper surface of the lower stepped portion of the piping duct 1. It is formed in the shape which touches.

  Although not specifically shown, the water stop plate 11 is temporarily fixed to the wall surface 2b so as to be sandwiched from above and below with respect to the refrigerant pipe group drawn out from the pipe opening 2a, and then tightened together with the wall plate 12. It is configured to be attached to the wall surface 2b.

  As shown in FIGS. 3 and 4, the water stop plate 11 forms a coking target portion 11 c at the upper and side outer peripheral ends. The caulking target part 11c is an L-shaped part in which the end of the plate is bent forward at the upper and side outer peripheral ends of the flat mounting plate part 11b and the tip thereof is bent in parallel with the wall surface 2b. A bent part. By forming the bent portion, a groove portion 11d that can be subjected to square caulking is formed between the wall surface 2b and the coking 11e is applied to the groove portion 11d.

  Before the wall plate 12 is attached, the water stop plate 11 is temporarily fixed in a state where the packing 13 is interposed between the wall surface 2b. As can be seen from FIG. 2 and FIG. 3, the end of the piping duct 1 is placed on the outer side of the joining cylinder portion 11 a with respect to the water stop plate 11 in the temporarily fixed state. The wall plate 12 is attached to the outside.

  As shown in FIGS. 2 and 3, the wall plate 12 has an appearance of an outer tube portion 12 a that covers the outer periphery of the end of the piping duct 1, and a joint portion between the end of the piping duct 1 and the water stop plate 11. And a flange portion 12b to be arranged. The outer peripheral end of the flange portion 12b is formed with a bent piece that bends backward. As can be seen from FIG. 2, the cross-sectional shape of the exterior cylinder portion 12 a is the same shape as the cross-sectional shape of the piping duct 1, and is formed in a shape that is slightly larger than the piping duct 1. And as shown in FIG. 3, the front-end | tip part of an exterior edge part is bent a little inside. Although not specifically shown, the wall plate 12 is vertically divided into two so as to be sandwiched and attached to the piping duct 1 from above and below.

  As shown in FIG. 3, the duct 1 for piping is clamped between the joining cylinder part 11a and the exterior cylinder part 12a in this way. Further, in order to increase the gripping force of the duct 1 for piping, a strip-shaped cushion material 12c having a square cross section is attached to the inside of the exterior cylinder portion 12a. And the water stop plate 11 and the wall plate 12 are fastened together with the bolt 14 and attached to the wall surface 2b with the rubber packing 13 sandwiched between the water stop plate 11 and the wall surface 2b.

  When the wall plate 12 is attached in this manner, the caulking 12d is applied between the outer tube portion 12a and the piping duct 1 at the front end portion of the outer tube portion 12a and on the front portion of the cushion material 12c. A space is formed. Further, a space for applying the caulking 12e is formed between the outer peripheral end of the flange portion 12b and the bent portion constituting the caulking target portion 11c of the water stop plate 11. The caulks 12d and 12e applied to these spaces are square caulks, and are applied before the hood-like cover 20 described later is attached.

Next, the hood-shaped cover 20 will be described.
The hood-like cover 20 is attached mainly to cover the coking 11e applied between the upper outer peripheral end of the water stop plate 11 and the wall surface 2b. The reason why the caulking 11e at the upper outer peripheral edge of the water stop plate 11 is protected thicker than other cokings is because it is exposed to a harsh environment compared to other cokings. Here, the other coking is the caulking 11e (see FIG. 4) at the side outer peripheral end of the water stop plate 11, the coking 12d between the wall plate 12 and the duct 1 for piping, and the wall plate 12 and the water stop plate. 11 is called caulking 12e. In addition, by attaching this hood-like cover 20, it is possible to reduce direct sunlight and wind and rain against other coking, and to reduce deterioration of other coking.

  The hood-like cover 20 is for suppressing direct sunlight and wind and rain from hitting the caulking 11e at the upper outer peripheral end of the water stop plate 11, and is fixed to the wall surface 2b as shown in FIGS. It has a frame body 21 and a roof body 22 that is detachably attached to the frame body 21 fixed to the wall surface 2b.

  As shown in FIG. 6, the frame body 21 includes a horizontal horizontal frame portion 211 positioned above the connector 10, and a pair of vertical side frame portions 212 positioned on the left and right sides of the connector 10. Are integrally formed. In the present embodiment, when the horizontal frame portion 211 and the side frame portion 212 need to be separated, a 45 degree line with respect to the horizontal line at the left and right corner portions is considered as a boundary.

  The horizontal frame portion 211 and the side frame portion 212 have cross sections shown in FIGS. 3 and 4. That is, the horizontal frame portion 211 and the side frame portion 212 are provided on the flat surface mounting portion 21a, which is a plate-shaped portion that is in close contact with the wall surface 2b and forms a mounting surface to the wall surface 2b, and on the outer peripheral side of the flat surface mounting portion 21a. 2b, and a caulking target portion 21b for forming a groove portion 24 to which a caulking 23 (see FIG. 3) is applied. In other words, the caulking target portion 21b is an L-shaped bent portion in which the end portion of the flat mounting portion 21a is once bent perpendicularly to the wall surface 2b so as to be separated from the wall surface 2b, and further, the tip portion is bent in parallel with the wall surface 2b. Say. Thus, since the cross section of the groove part 24 is formed in a quadrangle, the coking 23 becomes a square coking.

  Moreover, the horizontal frame part 211 and the side frame part 212 are provided with the extension part 21c which extended the front-end | tip of the L-shaped bending part which comprises the caulking object part 21b further forward. In this embodiment, the extending portion 21c is perpendicular to the wall surface 2b, but is not strictly required to be vertical. The extending portion 21c may be provided with an appropriate angle with respect to the wall surface 2b in a range satisfying functions to be described later.

  The extension part 21c of the horizontal frame part 211 is used as an attachment surface of the roof body 22 as shown in FIGS. Moreover, the upper part in the extension part 21c of the side frame part 212 comprises the attachment surface of the roof body 22 as shown in FIG.5 and FIG.6, and the downward direction of the roof body 22 in the extension part 21c of the side frame part 212 is shown. This part has a positional relationship as shown in FIG. 4 and functions as a member that reduces direct sunlight and wind and rain hitting the coking 11e of the water stop plate 11. For this function, as shown in FIG. 4, in the state where the hood-shaped cover 20 and the water stop plate 11 are attached to the wall surface 2b, the height H from the wall surface 2b of the extending portion 21c is the extending portion 21c. Is formed to be at least larger than the width L of the groove 11d opposed to the groove 11d. The height H is preferably as high as possible in order to prevent direct sunlight from entering the groove portion 11d and the rain and rain. However, in consideration of the convenience of visual confirmation of the coking 11e applied to the groove portion 11d, handling, etc. In the embodiment, the width is set to slightly more than twice the width L of the groove 11d.

  As shown in FIG. 6, a total of nine bolt holes 25 a for fixing the frame body 21 to the wall surface 2 b with bolts 25 are formed in the horizontal frame portion 211 and the side frame portion 212 in the plane mounting portion 21 a of the frame body 21. Is formed. Further, five screw holes 26 a for screwing the attachment surface portion 22 b of the roof body 22 to the frame body 21 by bolts 26 are formed in the horizontal frame portion 211 in the extending portion 21 c of the frame body 21. Similarly, screw holes 26 a for screwing the side plate portion 22 c of the roof body 22 to the frame body 21 with bolts 26 are respectively provided above the left and right side frame portions 212 in the extending portion 21 c of the frame body 21. Two are formed.

  Further, as shown in FIG. 7, the roof body 22 includes an inclined portion 22 a that is inclined obliquely downward toward the front, an attachment surface portion 22 b that is a horizontal surface for attaching the roof body 22 to the frame body 21, and side portions. It has a substantially triangular side plate portion 22c to be attached. With such a configuration, the roof body 22 is detachably attached to the frame body 21 attached to the wall surface 2b by the bolts 26.

  As shown in FIG. 3, the roof body 22 has the tip portion of the caulking target portion 11 c of the water stop plate 11, that is, the outer peripheral end portion above the connection tool 10 in a state where the hood-like cover 20 is attached. The size of the inclined portion 22a is determined so as to extend to a position below the coking target portion 11c. Further, in this embodiment, as shown in FIG. 3, the roof body 22 is set so that the angle α with respect to the horizontal line of the line connecting the front end portion and the front end of the exterior cylinder portion 12a is 45 degrees or less. ing. Thereby, the protection of the coking 12d located on the upper surface of the distal end portion of the exterior cylinder portion 12a is improved.

The side part of the roof body 22 has a substantially triangular side plate part 22c that closes the side part.
As shown in FIG. 6, five bolt holes 26b through which the bolts 26 are inserted are provided in the attachment surface portion 22b and two in each of the left and right side plate portions 22c. The inclined portion 22a extends to the full width of the frame body 21.

  As shown in FIG. 4, the hood-shaped cover 20 configured as described above is a space having a constant interval W between the inner peripheral side of the frame body 21 and the outer peripheral side of the mounting plate portion 11 b in the water stop plate 11. Is attached to the wall surface 2b. The reason why the space having the constant interval W is formed is to allow the caulking material to adhere to the outside of the groove portion 11d when the coking 11e is applied to the groove portion 11d on the outer periphery of the water stop plate 11, and this portion The purpose is to reduce the precision of the caulking work and improve the workability. The space interval W may be determined in consideration of the purpose, and various dimensions can be taken depending on the permissible level. In the present embodiment, the width L of the groove 11d (that is, the height from the wall surface 2b). ) And smaller than the same dimension.

(Function)
First, attachment of the hood-shaped cover 20 in the building 2 will be described. The hood-like cover 20 is attached to the outside of the connector 10 after the piping duct 1 is connected to the piping opening 2 a by the connector 10. When attaching the hood-like cover 20, the frame body 21 is first attached to the wall surface 2b. Since the frame body 21 has a shape in which the lower portion provided with the side frame portions 212 on both sides of the horizontal frame portion 211 is opened, it can be pressed against the wall surface 2b from above the connected duct 1 for piping. And the frame 21 is attached to the outer side of the connection tool 10 by inserting the volt | bolt 25 from the bolt hole 25a with respect to the pressed frame 21, and screwing it in the wall surface 2b. When the frame body 21 is attached in this way, a groove portion 24 is formed between the caulking target portion 21b and the wall surface 2b, as shown in FIGS. Then, the caulking 23 is applied to the groove 24. During this caulking operation, the caulking material may adhere to the outside of the groove portion 24. As a space allowing such outside protrusion, the inner periphery side of the frame body 21 and the outer periphery of the connector 10 are used. A space with an interval W is prepared between the two. By giving this margin, the efficiency of the coking work is improved. In this way, the attachment of the frame body 21 is completed.

  When the attachment of the frame body 21 is completed, the roof body 22 is then attached to the frame body 21. The roof body 22 is attached to the extended portion 21 c of the frame body 21. When the bolt hole 26b formed in the mounting surface portion 22b and the side plate portion 22c and the screw hole 26a formed in the extending portion 21c are aligned and screwed into the bolt 26, the rear end of the mounting surface portion 22b is grooved. It can be attached so as not to protrude to the 24 side. Thereby, attachment of the frame 21 is not hindered by the caulking 23 applied to the groove 24.

  According to the connection structure to the building of the duct 1 for main piping in which the roof body 22 is attached to the outer peripheral side of the connection tool 10 as described above, the inclined portion 22a of the roof body 22 is directly exposed to the connection tool 10 from above. And prevent wind and rain. Further, the side plate portion 22c of the roof body 22 prevents direct sunlight and wind and rain from being applied to the connection tool 10 from the side. Furthermore, the extending part 21c of the side frame part 212 prevents direct sunlight and wind and rain from the side. The extending portion 21c can exert an effect particularly on wind and rain that tends to flow strongly along the wall surface 2b. Further, the caulking 23 on the outer periphery of the frame body 21 blocks rainwater flowing downward or horizontally along the wall surface 2b.

  In the above, the roof body 22 is formed such that the tip end portion of the inclined portion 22a is below the caulking target portion 11c of the upper outer peripheral end portion of the connection tool 10, and therefore the upper outer peripheral end portion of the connection tool 10 It is possible to greatly reduce the direct sunlight and wind and rain against the coking target part 11c. It should be noted that rainwater that pours onto the roof body 22 and rainwater that flows into the upper surface of the roof body 22 along the wall surface 2b falls down smoothly because the ridge portion of the roof body 22 is formed as an inclined portion 22a. It does not collect on the upper surface of the body 22.

  Since the groove portion 24 for caulking the outer peripheral portion of the frame body 21 of the hood-like cover 20 is formed at the rear of the roof body 22, the visual confirmation of the coking 23 at the time of completion of construction and regular maintenance is performed by the roof body 22. Can be done with the Further, visual confirmation of the caulks 11e, 12d and 12e between the outer peripheral portion of the connector 10 and the wall surface 2b, between the wall plate 12 and the duct 1 for piping, and between the wall plate 12 and the water stop plate 11 respectively. Since the roof body 22 is detachably attached to the frame body 21 attached to the wall surface 2b, only the roof body 22 can be removed. The roof body 22 can be easily removed by removing the bolts 26.

(Effect of this embodiment)
Since the connection structure to the building of the duct for piping which concerns on this Embodiment is comprised as mentioned above, there can exist the following effects.

  (1) The roof body 22 of the hood-like cover 20 can reduce direct sunlight and wind and rain hitting the caulking 11e between the connector 10 and the wall surface 2b. Thereby, while being able to maintain water stop performance high, deterioration of the caulking 11e of the connector 10 can be suppressed and water stop performance can be maintained high.

  (2) Further, the hood-like cover 20 is provided on the outer peripheral side of the connector 10 and can be easily installed on the building 2 having no fence, so that it can be applied to any building and is versatile. .

  (3) Since the roof body 22 of the hood-like cover 20 can be removed while the frame body 21 of the hood-like cover 20 is attached to the wall surface 2b, the state of each coking 11e, 12d, 12e at the time of completion of construction and periodic maintenance Can be easily visually confirmed.

  (4) The water stoppage on the wall surface 2b of the building 2 is double because of the caulking 11e between the connector 10 and the wall surface 2b and the caulking 23 between the frame body 21 and the wall surface 2b. The water stop performance in the wall surface 2b where it is difficult to obtain the surface degree can also be increased.

  (5) The connector 10 positioned below the roof body 22 by confirming the deterioration state of the coking 23 applied between the frame body 21 and the wall surface 2b without removing the roof body 22. There is also the convenience that the deterioration state of the coking 11e between the wall surface 2b and the wall surface 2b can be estimated.

  (6) Since the roof body 22 is provided with the inclined portion 22a whose front end portion is inclined toward the front lower side, it is difficult for rainwater to collect in the roof body 22, and corrosion is caused when the roof body 22 is made of metal. Can be delayed.

  (7) In this case, since the roof body 22 is extended to a position where the tip is below the caulking target portion 11c of the upper outer peripheral end portion of the connecting tool 10, the upper outer peripheral end of the connecting tool 10 It is possible to block direct sunlight on the coking target part 11c of the part. Moreover, the hit of the wind and rain with respect to the coking object part 11c can be reduced significantly.

  (8) The tip of the flat mounting portion 21a that is a plate-like portion that is in close contact with the wall surface 2b so that the caulking target portion 21b of the frame body 21 forms a caulking groove portion 24 having a rectangular cross section between the wall surface 2b. Is an L-shaped bent portion that is bent forward, so that square caulking can be used as the caulking 23 applied to the caulking target portion 21b of the frame body 21. Therefore, the water stop performance is good.

  (9) Since the roof body 22 is detachably attached to the frame body 21 so that the rear portion of the roof body 22 does not cover the upper surface of the groove portion 24, the roof body 22 in the state where the roof body 22 is attached. The caulking 23 applied to the caulking target portion 21b above the frame body 21 can be visually confirmed without removing the frame 22. Further, the caulking 23 does not hinder the attachment of the roof body 22.

  (10) The frame body 21 has a horizontal frame portion 211 that supports the roof body 22, and the horizontal frame portion 211 has an extending portion 21c that extends forward from a bent portion that forms the caulking target portion 21b. The roof body 22 has a mounting surface portion 22b fixed to the extending portion 21c. And by attaching this attachment surface part 22b so that attachment or detachment is possible, it is attached to the frame 21 so that attachment or detachment is possible. For this reason, the visual confirmation of the caulking 23 on the upper part of the frame body 21 and the detachable attachment of the roof body 22 can be realized with a simple structure.

  (11) Since the frame body 21 has the side frame portion 212 located on the side of the connection tool 10, the caulking 23 applied to the side frame portion 212 leads to the caulking 11 e at the outer peripheral end on the side of the connection tool 10. The flow of wind and rain can be suppressed.

  (12) The side frame portion 212 has an extending portion 21c extending forward with respect to the wall surface 2b, and the extending portion 21c leads to the caulking target portion 11c at the outer peripheral end portion on the side of the connector 10. Since the direct sunlight can be reduced, it is possible to suppress the deterioration of the caulking 11e at the outer peripheral end on the side of the connector 10.

[Modification]
The above description of each embodiment is an example of the form that the closing structure of the terminal opening in the duct for piping according to the present invention can take, and is not intended to limit the form. The closing structure of the end opening in the duct for piping according to the present invention can take, for example, a combination of the following modified example of the above-described embodiment and at least two modified examples not contradicting each other.

  In the above-described embodiment, the roof body 22 is entirely formed as the inclined portion 22a in front of the mounting surface portion 22b. However, as shown in FIG. 8, the mounting surface portion 22b is extended forward to form a flat surface portion 22d. It is good also as what is formed in front of this plane part 22d, ie, the inclination part 22a partially in the front end side of the roof body 22. FIG.

  In the above embodiment, the rear portion of the mounting surface portion 22b of the roof body 22 is formed so as not to cover the upper surface of the groove portion 24. However, as shown in FIG. You may make it cover the upper surface of the groove part 24 with the back part of the attachment surface part 22b. In addition, in the modification shown in FIG. 9, in order to avoid the rear part of the mounting surface part 22b from interfering with the upper surface of the caulking 23, the step part 22e is formed to position the upper part of the groove part 24 one step above. Has been.

  The modification shown in FIG. 10 covers the upper part of the groove 24 by the rear part of the attachment surface part 22b of the roof body 22 as in the modification example of FIG. 9, but the rear part of the attachment surface part 22b is the caulking 23. The means for avoiding the interference is different. That is, in this modification, a spacer 22f is attached above the extended portion 21c that forms the attachment surface of the frame body 21 and below the bolt hole 26b of the attachment surface portion 22b. The spacer 22f may be provided for each bolt hole 26b, but may be substantially over the entire length of the extending portion 21c forming the mounting surface. By providing the spacer 22f, the attachment surface portion 22b extended to the upper surface of the groove portion 24 is lifted upward to avoid interference with the caulking 23.

  In the embodiment, the connector 10 and the hood-like cover 20 are described as being made of sheet metal, but the material is not particularly limited, and a resin molded product may be used.

  In the embodiment described above, the roof body 22 is detachably fixed to the frame body 21 by the nine bolts 26. However, the number of the bolts 26 may be reduced. Moreover, although it fixed to the extension part 21c of the frame 21 in both the side-plate part 22c and the attachment surface part 22b of the roof body 22, you may make it attach only in any one. Moreover, although only the bolt 26 was used as the fixing means, it was changed to an appropriate fixing means with good workability such as hooking a part and using it as an engaging means such as fitting, and fixing the other with bolts or screws. May be.

  In the above embodiment, the connector 10 specifically described is merely an example, and it is needless to say that the connector 10 may have another structure. In addition, even if it is a connection tool of any structure, although caulking is given between the wall surface 2b or the wall of the building 2, the upper part of the connection tool can be obtained by using the hood-like cover 20 described in the above embodiment. Can protect the caulking.

DESCRIPTION OF SYMBOLS 1 Duct for piping 2 Building 2a Opening part 2b for piping Wall surface 10 Connector 11c Caulking object part 20 Hooded cover 21 Frame body 21b Caulking object part 21c Extension part 22 Roof body 22a Inclination part 22b Mounting surface part 23 Caulking 24 Groove part 211 Horizontal Frame 212 Side frame

Claims (8)

A connecting tool (10) for connecting the duct (1) for piping to the opening (2a) for piping in the building (2), and a bowl-shaped roof body (22) covering the upper side of the connecting tool (10). A hood-like cover (20) provided,
The connector (10) has a caulking target part (11c) for caulking between the upper and side outer peripheral ends with the wall surface (2b) around the piping opening (2a),
The hood-like cover (20) has a frame (21) fixed to the wall surface (2b) for supporting the roof (22),
The frame (21) has a caulking target part (21b) for caulking between the wall surface (2b) and
The roof body (22) is detachably attached to the frame body (21) attached to the wall surface (2b). A piping duct connection structure to the building. The connection structure to the building of the duct for piping of Claim 1. The said roof body (22) is formed in the inclination part (22a) at which the front-end | tip part inclines toward the front downward direction. The building of the duct for piping according to claim 2, wherein the roof body (22) is extended to a position below the caulking target portion (11c) at the outer peripheral end portion above the connection tool (20). Connection structure to. The caulking target portion (21b) of the frame (21) is a plate that is in close contact with the wall surface (2b) so as to form a caulking construction groove portion (24) having a square cross section with the wall surface (2b). The connection structure to the building of the duct for piping of any one of Claims 1-3 which is the bending part which bent the front-end | tip of the shape part forward. The said roof body (22) is detachably attached with respect to the said frame (21) so that the rear part of the said roof body (22) may not cover the upper surface of the said groove part (24). Connection structure for ducts for piping. The frame (21) has a horizontal frame (211) that supports the roof (22),
The horizontal frame portion (211) has an extending portion (21c) extending forward from the bent portion,
The roof body (22) has a mounting surface portion (22b) fixed to the extending portion (21c) so that the rear end portion of the mounting surface portion (22b) does not cover the upper surface of the groove portion (24). The pipe for mounting according to claim 4, wherein the attachment surface portion (22 b) is detachably fixed to the extension portion (21 c) by a fixing means, and is detachably attached to the frame body (21). Connection structure to duct building. The roof body (22) is configured so that the rear portion of the roof body (22) covers the upper surface of the groove portion (24) without interference with the caulking (23) of the frame body (21). The connection structure to the building of the duct for piping according to claim 4, which is detachably attached to 21). The frame body (21) has a side frame portion (212) located on a side of the connector (10),
The side frame portion (212) has an extending portion (21c) extending forward with respect to the wall surface (2b),
The extension portion (21c) is configured to reduce direct sunlight to a caulking target portion (11c) at a lateral outer peripheral end portion of the connection tool (10). The connection structure to the building of the duct for piping as described in item 1.

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