JP2006017388A - Sleeve, and connecting structure of duct - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sleeve capable of improving working efficiency in connection, and to provide a connecting structure of ducts by using the sleeve. <P>SOLUTION: This sleeve 31 comprises a cylindrical sleeve body 32, a lower sleeve flange 34 fixed to an outer wall of the sleeve body 32 along a lower edge of the sleeve body 32, and a skirt part 35 mounted while covering the lower sleeve flange 34. The sleeve 31 is fixed to a deck plate 2 at the skirt part 35, and an opening is formed on an inner side with respect to an inner wall face of the skirt part 35, of the deck plate 2. A lower duct 21 comprising a duct body 22 having a diameter same of the sleeve body 32 and a lower duct flange 23 fixed to an outer wall of the duct body 22 along an edge of the duct body 22 is inserted into the opening, thus the sleeve 31 and the lower duct 21 can be connected. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  TECHNICAL FIELD The present invention relates to a sleeve that is disposed on a floor, a wall, or the like that constitutes a housing of a construction and communicates with a duct that is disposed across the housing, and a duct connecting structure using the sleeve. is there.

  Conventionally, for example, as shown in FIG. 6, a sleeve 54 is referred to the floor 51 in order to connect an upper duct 61 provided in an upper space of the floor 51 and a lower duct 62 provided in a lower space of the floor 51. There is a technique for providing a cylindrical body.

  In general, the sleeve 54 includes a sleeve body 55 having a square cylindrical shape and upper and lower sleeve flanges 56 and 57 that are fixed to the inner wall surface of the sleeve body 55 by welding.

A process of communicating the upper duct 61 and the lower duct 62 using the sleeve 54 will be described with reference to FIG. First, a deck plate 52 is installed as a base constituting the floor 51. A reinforcing bar (not shown) is assembled on the upper portion, and a sleeve 54 is fixed to a predetermined position of the deck plate 52. Thereafter, concrete is placed outside the sleeve 54 to form a concrete layer 53. Next, an inner portion of the deck plate 52 than the inner wall surface of the sleeve main body 55 is cut to form an opening. Then, the lower duct 62 is inserted through the opening, and the duct flange 64 and the lower sleeve flange 57 fixed to the outer wall surface of the lower duct 62 by welding are fixed. Further, the upper sleeve flange 56 and the duct flange 63 welded and fixed to the outer wall surface of the upper duct 61 are also fixed to the upper portion of the sleeve 54. Thereby, the upper duct 61 and the lower duct 62 are communicated via the sleeve 54 (see, for example, Patent Document 1).
JP 2004-036950 A

  However, in the above technique, the diameters of the upper and lower ducts 61 and 62 are configured to be smaller than the diameter of the sleeve 54, and the duct flanges 63 and 64 are configured to be smaller than the sleeve flanges 56 and 57. That is, since the sizes of the corresponding members such as the sleeve main body 55 and the lower duct main body 62, the sleeve flanges 56 and 57, and the duct flanges 63 and 64 are different, the sleeve flanges 56 and 57 and the duct flanges 63 and 64 are different. There is a risk that it takes time to align and bolt the bolts.

  The present invention has been made in view of the above circumstances, and has as one of its main objects to provide a sleeve capable of improving work efficiency during connection and a duct coupling structure using the sleeve. Yes.

Means 1. In the duct connection structure in which the ducts arranged in the spaces isolated by the separators are connected using a sleeve installed in the separators,
The separator includes at least a substantially plate-like plate and a concrete layer formed by placing concrete on one side of the plate,
The sleeve is provided at a cylindrical sleeve body, a sleeve flange provided so as to protrude toward the outer peripheral side of the sleeve body along at least one edge of the sleeve body, and the one edge. And a skirt portion for fixing the sleeve to the plate,
The duct includes a duct body having the same diameter as the sleeve body, and a duct flange portion provided so as to protrude to the outer peripheral side of the duct body along an edge of the duct body.
By fixing the sleeve on the plate and placing concrete around it, the separator is configured, and by forming an opening inside the inner wall surface of the skirt portion of the plate, A duct connecting structure characterized in that the sleeve and the duct are connectable.

  According to the means 1, the skirt portion is provided so as to cover the sleeve flange provided at one end (on the plate side) of the sleeve main body. Therefore, even when the sleeve flange protrudes to the outer peripheral side of the sleeve body as in this means, the sleeve flange is not buried in the concrete. That is, it can be set as the structure which a sleeve flange protrudes to the outer peripheral side of a sleeve main body, what is called an outward flange. And it can be made to contact | abut on the outer side of a sleeve main body with respect to the duct flange which is also an outward flange. Therefore, troublesome operations such as fixing the flanges so that the operator enters the inside (flow path) of the sleeve or the duct or attaching another member to the sleeve can be avoided. Therefore, the sleeve and the duct can be connected relatively easily, and as a result, the working efficiency can be improved. Further, since the flanges do not protrude into the sleeve and the duct, the airflow in the duct and the sleeve (flow path) can be made smooth, and the occurrence of stagnation can be suppressed.

  Further, since the skirt portion is provided in the sleeve, it is possible to form an opening large enough to allow the duct to be inserted into the plate. Therefore, the diameter of the duct and the diameter of the sleeve main body can be made the same, and the size and shape of the duct flange and the sleeve flange can be made the same. Therefore, when the duct is fixed to the sleeve, the positions of the duct flange and the sleeve flange can be accurately and quickly adjusted, and the manufacturing accuracy and time efficiency in the connection work can be improved. Further, by making the diameter of the duct and the diameter of the sleeve the same, the airflow in the duct and the sleeve can be made smooth. In addition, the duct flange and the sleeve flange can be shared.

  Mean 2. 2. The duct connection structure according to claim 1, wherein the sleeve flange and the duct flange are fixed by bolting.

  According to the means 2, the sleeve flange and the duct flange can be firmly fixed by a relatively simple operation, and the sleeve and the duct can be reliably connected.

  Means 3. The sleeve flange is a part of an angle having an L-shaped cross section, and a portion of the angle other than the sleeve flange is fixed to the sleeve main body. Connected structure.

  According to the means 3, the sleeve flange can be fixed to the sleeve body relatively easily, and the sleeve flange can be firmly fixed to the sleeve body. Note that “fixed to the sleeve main body” includes “fixing to the outer wall surface of the sleeve main body” and “fixing in contact with the sleeve main body”.

  Means 4. The duct according to any one of claims 1 to 3, wherein the sleeve includes a non-slip flange fixed to the outside of the sleeve main body, and the non-slip flange is embedded in the concrete layer. Connected structure.

  According to the means 4, since the contact area between the sleeve and the concrete layer increases, the sleeve receives a large resistance from the concrete layer, and the positional deviation thereof is regulated. In particular, the movement of the sleeve in the direction perpendicular to the surface of the separator (plate surface) is more reliably regulated, and the displacement of the sleeve can be prevented more reliably.

  Means 5. A sleeve used in the duct connecting structure according to any one of means 1 to 4.

  By using the sleeve of the means 5, the operational effects of the means 1 to 4 can be achieved during construction.

  Hereinafter, an embodiment will be described with reference to FIGS. 1 to 5.

  First, based on FIG. 1, the schematic structure of the connection structure of the duct of this Embodiment is demonstrated. The floor 1 includes a substantially plate-shaped deck plate 2, a heat insulating layer 3 formed by laying a heat insulating material such as styrofoam on the deck plate 2, and a concrete layer 4 placed on the heat insulating layer 3. It has become. In addition, the deck plate 2 is provided with integrally formed ribs at predetermined intervals, whereby the strength of the deck plate 2 itself is increased and the deck plate 2 is deformed at the time of placing concrete. Etc. are prevented.

  In the present embodiment, an upper duct 11 located above the floor 1 and a lower duct 21 located below the floor 1 are provided so as to separate the floor 1, and the upper duct 11 and the lower duct 21 Are connected via a sleeve 31.

  As shown in FIGS. 1 and 2, the sleeve 31 includes a rectangular tubular sleeve main body 32 arranged to communicate with the upper and lower sides of the floor 1, and an outer wall of the sleeve main body 32 along the upper and lower edges of the sleeve main body 32. And upper and lower sleeve flanges 33 and 34, and a skirt portion 35 provided so as to cover the lower sleeve flange 34. In the present embodiment, the upper and lower sleeve flanges 33 and 34 are configured as one side of an angle having a substantially L-shaped cross section. The upper and lower sleeve flanges 33 and 34 are provided so as to extend from the sleeve main body 32 in the outer peripheral direction by being fixed in a state where the other side of the angle is in contact with the outer wall surface of the sleeve main body 32.

  The skirt portion 35 is configured such that the height position of the lower end portion thereof is substantially equal to the height position of the lower end portion of the sleeve main body 32 and the lower end portion of the lower sleeve flange 34 (becomes flush with each other). Joining metal fittings 37 are provided at predetermined intervals outside the lower end of the skirt part 35, and the joining metal fittings 37 are fixed to the deck plate 2 with screw screws 38 (see FIG. 2). Further, the deck plate 2 is provided with an opening through which the lower duct 21 is inserted along the inner wall surface of the skirt portion 35.

  An offset angle 39 is provided on the outer periphery of the sleeve body 32 at a position above the skirt portion 35. The retaining angle 39 is embedded in the concrete layer 4.

  The upper duct 11 includes an upper duct body 12 having the same inner diameter as the sleeve body 32 and an upper duct flange 13 welded and fixed to the outer wall of the upper duct body 12 along the lower edge of the upper duct body 12. . The upper duct 11 and the sleeve 31 are connected by fixing the upper duct flange 13 and the upper sleeve flange 33 with the bolts 14.

  The lower duct 21 includes a lower duct body 22 having the same inner diameter as the sleeve body 32, and a lower duct flange 23 welded and fixed to the outer wall of the lower duct body 22 along the upper edge of the lower duct body 22. ing. Then, the lower duct flange 23 and the lower sleeve flange 34 are fixed with bolts 24, thereby connecting the lower duct 21 and the sleeve 31.

  Using the sleeve 31 configured as described above, a process of communicating ducts 11 and 21 provided above and below the floor 1 will be described with reference to the drawings.

  As shown in FIGS. 3 and 4, first, the deck plate 2 is installed as a base constituting the floor 1. At this time, the sleeve 31 is fixed to a predetermined position of the deck plate 2 via the joining metal fitting 37.

  Next, a heat insulating material such as styrofoam is spread on the deck plate 2 to form the heat insulating layer 3. In addition, in the arrangement | positioning part of the sleeve 31, the heat insulating material is cut | disconnected according to the shape of the sleeve 31, and the heat insulating material is spread | paved out around the sleeve 31 almost (see FIG. 4). Thereafter, concrete is placed on the heat insulating layer 3 to form the concrete layer 4. In the present embodiment, since the sleeve 31 is provided with the skirt portion 35, the lower sleeve flange 34 can be prevented from being buried in concrete. Moreover, the concrete layer 4 is located even above the retaining angle 39.

  Next, as shown in FIG. 5, an opening for allowing the lower duct 21 to pass through the deck plate 2 is formed along the inner peripheral wall of the skirt portion 35. A burner is generally used for forming such openings.

  As shown in FIG. 1, the lower duct 21 is inserted through the opening provided in the deck plate 2, and is fixed by the bolt 24 in a state where the lower duct flange 23 and the lower sleeve flange 34 are in contact with each other. Thereby, the sleeve 31 and the lower duct 21 can be connected.

  Further, the upper duct 11 is also fixed by the bolt 14 in a state where the upper duct flange 13 and the upper sleeve flange 33 are in contact with each other.

  As described above, as shown in FIG. 1, both ducts 11 and 21 positioned above and below the floor 1 can be connected via the sleeve 31. According to the present embodiment, the skirt portion 35 is provided so as to cover the lower sleeve flange 34. Therefore, even when the lower sleeve flange 34 protrudes to the outer peripheral side of the sleeve main body 32, the lower sleeve flange 34 is not buried in the concrete layer 4. That is, a configuration in which the upper and lower sleeve flanges 33 and 34 are both protruded toward the outer peripheral side of the sleeve main body 32, that is, a so-called outward flange can be obtained. The upper and lower duct flanges 13 and 23 that are also outward flanges can be brought into contact with the upper and lower sleeve flanges 33 and 34 on the outside of the sleeve main body 32. Therefore, it is troublesome for the operator to fix the flanges (13 and 33, 23 and 34) so as to enter the inside (flow path) of the sleeve 31 and the ducts 11 and 21, or to attach another member to the sleeve 31. Work can be avoided. Therefore, the sleeve 31 and the ducts 11 and 21 can be connected relatively easily, and as a result, the work efficiency can be improved. Moreover, since each flange does not protrude in the sleeve 31 and the ducts 11 and 21, the airflow in the ducts 11 and 21 and the sleeve 31 (flow path) can be made smooth, and the occurrence of staying is suppressed. Can do.

  Further, since the skirt portion 35 is provided in the sleeve 31, an opening having a size sufficient to allow the lower duct 21 to be inserted into the deck plate 2 can be formed. Therefore, the diameter of the lower duct body 22 (upper duct body 12) and the diameter of the sleeve body 32 can be made the same, and the sizes and shapes of the duct flanges 13 and 23 and the sleeve flanges 33 and 34 can be made the same. Therefore, when the ducts 11 and 21 are fixed to the sleeve 31, the positions of the duct flanges 13 and 23 and the sleeve flanges 33 and 34 can be accurately and quickly adjusted, thereby improving the manufacturing accuracy and time efficiency in the connection work. be able to. Further, by making the diameters of the ducts 11 and 21 and the diameter of the sleeve 31 the same, the airflow in the ducts 11 and 21 and the sleeve 31 can be made smooth. In addition, the duct flanges 13 and 23 and the sleeve flanges 33 and 34 can be shared.

  Furthermore, in the duct connection structure according to the present embodiment, there is no air passage (gap) that can go back and forth in the space vertically separated by the floor 1 other than the sleeve main body 32, so that it is isolated by the floor 1. In addition, it is possible to prevent a decrease in the airtightness of each space. In addition, the sleeve 31 in the present embodiment has a relatively simple configuration in which a skirt portion 35 is provided on a cylindrical body (sleeve body 32) having an outward flange at an end edge so as to cover the outward flange. Therefore, a decrease in manufacturing efficiency of the sleeve 31 can be suppressed.

  In the present embodiment, a space is formed between the sleeve main body 32 and the skirt portion 35. Generally, since a burner is used for the opening operation of the deck plate 2, sparks are generated during the opening operation, but the sparks that have entered the space remain in the space. Therefore, it is possible to suppress the sparks from being scattered during the opening operation, and the opening operation is facilitated. In addition, in order to form an opening in the deck plate 2 in the present embodiment, it is only necessary to cut between the skirt portion 35 and the lower sleeve flange 34, and the skirt portion 35 has an allowable range for the cutting. It is wider than the case without it. Therefore, it is easy to prevent the possibility of accidentally cutting the outer peripheral side of the skirt portion 35, and in particular, the heat insulating layer 3 is formed by disposing a styrofoam or the like between the deck plate 2 and the concrete layer 4. In this case, it is possible to suppress the risk that the heat insulating layer will be sparked.

  Further, the sleeve flange 34 (33) and the duct flange 23 (13) can be firmly fixed by a relatively simple operation such as bolting, and the sleeve 31 and the duct 21 (11) can be securely connected. it can.

  In addition, the upper and lower sleeve flanges 33 and 34 are configured as one side of an angle having a substantially L-shaped cross section, and are fixed in a state where the other side of the angle is in contact with the sleeve body 32. The flanges 33 and 34 can be fixed to the sleeve main body 32 relatively easily, and the upper and lower sleeve flanges 33 and 34 can be firmly fixed to the sleeve main body 32.

  Further, the sleeve 31 is provided with an angle 39 for preventing slippage so as to be positioned on the concrete layer 4. Therefore, since the contact area between the sleeve 31 and the concrete layer 4 increases, the sleeve 31 receives a greater resistance from the concrete layer 4, and the positional deviation thereof is regulated. In particular, the movement of the sleeve 31 in the direction orthogonal to the surface of the floor 1 (the surface of the deck plate 2) is more reliably regulated, and the displacement of the sleeve 31 can be more reliably prevented.

  In addition, you may implement as follows, for example, without being limited to the content of description of embodiment mentioned above.

  (A) In the above embodiment, the sleeve flanges 33 and 34 and the sleeve body 32 are configured as separate members. However, the sleeve flanges 33 and 34 are formed by bending both ends of the sleeve body 32 integrally. You can also.

  (B) In the above embodiment, the bolts 14 and 24 are used for fixing the upper and lower sleeve flanges 33 and 34 and the duct flanges 13 and 23, respectively, but the fixing method is not particularly limited, For example, it is good also as fixing by welding, sovetting, etc. Further, the fixing method of the sleeve 31 and the deck plate 2 is not limited to the above example, and may be fixed by, for example, welding or bolting.

  (C) In the above-described embodiment, the sleeve main body 32 is configured in a square cylindrical shape, but various cylindrical shapes can be employed. For example, examples of the cylindrical shape other than the rectangular cylindrical shape include a cylindrical shape, an elliptical cylindrical shape, and a hexagonal cylindrical shape.

  (D) In the above embodiment, the duct connection structure on the floor 1 is embodied, but the present invention is not limited to the floor 1 (floor, ceiling). That is, the separator can be embodied in a wall, for example.

  (E) Although not particularly mentioned in the above embodiment, the sleeve 31 and the upper and lower ducts 11 and 21 may be made of a galvanized steel plate. In that case, iron corrosion can be suppressed.

Sectional drawing which shows the connection structure of the duct in one Embodiment. The perspective view which shows the structure of a sleeve. Sectional drawing at the time of showing the communication process of a duct, the sleeve being fixed to the deck plate, and the heat insulation layer and the concrete layer were provided. The top view which shows the communication process of a duct, and shows the structure of the sleeve and floor at the time of the heat insulation layer being formed. Sectional drawing at the time of the opening for showing the communication process of a duct and inserting a duct in a deck plate being formed. Sectional drawing which shows the connection structure of the conventional duct.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Floor, 2 ... Deck plate (plate), 3 ... Thermal insulation layer, 4 ... Concrete layer, 11 ... Upper duct, 12 ... Upper duct main body, 13 ... Upper duct flange, 21 ... Lower duct, 22 ... Lower duct main body, DESCRIPTION OF SYMBOLS 23 ... Lower duct flange, 31 ... Sleeve, 32 ... Sleeve main body, 33 ... Upper sleeve flange, 34 ... Lower sleeve flange, 35 ... Skirt part, 39 ... Shifting angle (shifting flange)

Claims (5)

In the duct connection structure in which the ducts arranged in the spaces isolated by the separators are connected using a sleeve installed in the separators,
The separator includes at least a substantially plate-like plate and a concrete layer formed by placing concrete on one side of the plate,
The sleeve is provided on a cylindrical sleeve body, a sleeve flange provided so as to protrude toward the outer peripheral side of the sleeve body along at least one edge of the sleeve body, and the one edge. And a skirt portion for fixing the sleeve to the plate,
The duct includes a duct body having the same diameter as the sleeve body, and a duct flange portion provided so as to protrude to the outer peripheral side of the duct body along an edge of the duct body,
By fixing the sleeve on the plate and placing concrete around it, the separator is configured, and by forming an opening inside the inner wall surface of the skirt portion of the plate, A duct connecting structure characterized in that the sleeve and the duct are connectable.   The duct connection structure according to claim 1, wherein the sleeve flange and the duct flange are fixed by bolting.   The duct according to claim 1 or 2, wherein the sleeve flange is a part of an angle having an L-shaped cross section, and a portion of the angle other than the sleeve flange is fixed to the sleeve body. Connection structure.   The duct according to any one of claims 1 to 3, wherein the sleeve includes an anti-slipping flange fixed to the outside of the sleeve body, and the anti-slipping flange is embedded in the concrete layer. Connection structure.   The sleeve used for the connection structure of the duct in any one of Claims 1 thru | or 4.

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