JP7041488B2 - Duct system - Google Patents

Description

The present invention relates to a duct system including a duct made of corrugated cardboard.

Conventionally, as a duct for air conditioning, a duct system using a duct made of corrugated cardboard has been proposed (see, for example, Patent Documents 1 and 2). In this duct system, a plurality of ducts are provided in a state where the ducts are connected to each other, and the ducts are suspended and supported from the ceiling or the like by using a hanging tool or the like.

In the system described in Patent Document 1, three configurations are exemplified as configurations for suspending and supporting the duct. The first configuration is a configuration in which the duct is received and supported by an angle material suspended and supported by a hanging tool. The second configuration is a configuration in which a ring pin is inserted into the side surface portion of the duct and the ring pin is suspended and supported by a hanging tool. The third configuration is to provide a metal connecting body that fits inside the duct and connects the ducts to each other, and the portion of the connecting body that extends to the outer peripheral side of the duct is suspended and supported by a hanging tool. be.

In the system described in Patent Document 2, as a configuration for suspending and supporting ducts, a box-shaped connecting body for connecting ducts to each other is provided while covering the ducts, and a hanging piece formed on a side surface of the connecting body is suspended. An example is a configuration in which a hanging tool is used to support the suspension.

Patent No. 4820155 Patent No. 4898540

In the duct system as described above, a duct made of corrugated cardboard is used to reduce the weight and improve the workability. However, in the third suspension configuration in the system described in Patent Document 1, since the duct is suspended and supported by using a metal connecting body, the weight of the connecting body itself becomes heavy, which is effective in reducing the weight. It becomes impossible to aim.

Further, in the first suspension configuration in the system described in Patent Document 1, an angle material must be separately provided in order to suspend and support the duct, which leads to complicated configuration and cost increase. Become. In the second suspension configuration in the system described in Patent Document 1, since the ring pin is inserted into the side surface portion of the duct, not only may a problem occur in terms of the durability of the duct, but also the ring pin is inserted. At some points, it is necessary to take measures such as preventing the inside and the outside of the duct from communicating with each other, and it becomes necessary to take some measures to suspend and support the duct.

In the system described in Patent Document 2, although the duct is suspended and supported by using a connecting body connecting the ducts, a hanging piece extending to the outer peripheral side of the duct must be formed on the side surface of the connecting body. However, the configuration is complicated and workability is also required to be improved. Further, since the connecting body is used to suspend and support the ducts, the locations where the ducts are suspended and supported are limited to the locations where the ducts are connected to each other. Therefore, it is not possible to freely select a location for suspending and supporting the duct according to the arrangement condition of the duct and various other conditions, and it is difficult to effectively improve the workability.

In view of this situation, a main object of the present invention is to provide a duct system capable of suspending and supporting a duct while simplifying the configuration, reducing the weight, and improving the workability.

The first characteristic configuration of the present invention is a duct made of corrugated cardboard and a duct.
It is made of corrugated cardboard and is provided with an insertion member through which the duct is inserted.
The insertion member has a plate shape having a diameter larger than that of the duct extending toward the outer peripheral side of the duct, and is provided with a large diameter portion formed in a rectangular shape in the axial direction of the duct. Can be suspended and supported by a hanging tool, and can be mounted at the place to be mounted.
The insertion member is configured by superimposing a plurality of corrugated cardboard members in the axial direction of the duct.

According to this configuration, by providing the insertion member made of corrugated cardboard, it is possible not only to support the hanging of the duct while reducing the weight of the insertion member, but also to be large in the place to be mounted such as the floor. It is possible to proceed with the installation work of the duct while placing the diameter portion, and it is possible to improve the workability. Moreover, both the hanging support of the duct and the mounting on the place to be mounted such as the floor use the large diameter portion provided in the insertion member, and the duct is suspended and supported or mounted. There is no need to take any action to do so.

In addition, although the large diameter part extends to the outer peripheral side of the duct and has a simple structure of a plate shape having a larger diameter than the duct, the large diameter part can be used regardless of the shape of the duct. Since it can be suspended and supported and mounted on the target location, the configuration can be simplified, and the suspension support and mounting on the target location can be performed without any restrictions on the duct shape. Can be placed. Moreover, since the large-diameter portion has a rectangular shape, for example, the upper portion of the large-diameter portion can be used as a hanging support location, and the lower portion of the large-diameter portion can be used as a mounting location. While utilizing the shape, it is possible to efficiently suspend and support the duct and place it on the place to be placed. Since the place where the insertion member is provided becomes the hanging support place or the mounting place, the insertion member can be freely installed according to the duct arrangement situation and various other conditions, which is effective in improving workability. Can be planned.

The second characteristic configuration of the present invention is that the insertion member has a hole that fits into the duct.

According to this configuration, by providing the insertion member, in addition to suspending and supporting the duct and mounting it at the place to be mounted, the hole portion of the insertion member can be externally fitted to the duct. .. Therefore, it is possible to prevent the cross-sectional shape of the duct from being deformed by the hole portion of the insertion member, and it is possible to maintain the cross-sectional shape of the duct.

The third characteristic configuration of the present invention is that the insertion member is provided with a cylindrical connection portion extending in the axial direction of the duct.
The connection portion is at a point where the ducts are guided in the axial direction thereof so that the ducts can be freely connected to each other.

According to this configuration, by providing the insertion member, in addition to suspending and supporting the duct and mounting it at the place to be mounted, the ducts are connected to each other at the connection portion of the insertion member. Can be done. Moreover, since the connecting portion has a tubular shape extending in the axial direction of the duct, for example, when the connecting portion abuts on the duct, the duct can be guided in the axial direction and the ducts can be connected to each other. , It is possible to simplify the connection work between ducts.

The fourth characteristic configuration of the present invention is that the connection portion is configured in a cylindrical shape that can be fitted externally to the duct.
It is located in the middle of the connection portion extending in the axial direction of the duct, and is provided with a contact portion extending inward of the duct from the connection portion.

According to this configuration, when the duct is inserted into the tubular connection portion in order to connect the ducts to each other, the duct moves with the duct fitted on the outside at the tubular connection portion. At this time, a contact portion is provided in the middle of the connection portion, and the contact portion extends inward of the duct from the connection portion. By moving, the duct can be moved to a desired position, and the duct can be positioned at a desired position. Therefore, when connecting the ducts to each other, the ducts can be easily positioned at a desired position suitable for the connection, and the work of connecting the ducts to each other can be simplified.

In the fifth characteristic configuration of the present invention, the connection portion and the contact portion are separately configured.
The connection portion is located at a point where the contact portion is arranged so as to sandwich the contact portion from both sides in the axial direction of the duct.

According to this configuration, since the connection portion and the contact portion are separate bodies, the connection portion and the contact portion can be placed in a desired posture and position simply by arranging the contact portion in a state of sandwiching the contact portion between the pair of connection portions. It can be assembled to, and the assembly work of the connection part and the attachment part can be simplified.

Perspective view showing the schematic configuration of the duct system Disassembled and disassembled perspective view of the main parts of the duct system Side view showing the first insertion member Sectional drawing which shows the 1st insertion member Cross-sectional view of the first insertion member in a disassembled state Side view showing the second insertion member Sectional drawing which shows the 2nd insertion member

An embodiment of the duct system according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the duct system 1 includes a duct 2 made of corrugated cardboard and insertion members 3 and 4 through which the duct 2 is inserted. The duct system 1 includes a plurality of ducts 2 in a state where the ducts 2 are connected to each other, and the ducts 2 are suspended and supported by suspending and supporting the insertion members 3 and 4 by the suspending tools 5 and 6. It is configured in.

As shown in FIGS. 1 and 2, the duct 2 is a tubular corrugated cardboard 21 having a hexagonal cross-sectional shape, and a duct sheet body 22 that covers the inside and outside of the cylindrical corrugated cardboard 21. (See FIGS. 4 and 7). Incidentally, in FIG. 2, in the duct 2, the duct sheet body 22 that covers the periphery of the corrugated cardboard 21 is omitted. The duct sheet body 22 is made of, for example, aluminum foil or the like. The duct 2 has functions such as noncombustible performance, airtightness, heat insulating performance, moisture proofing property, and dew condensation prevention by covering the periphery of the corrugated cardboard 21 with the duct sheet body 22. The corrugated cardboard 21 and the duct sheet 22 are fixed to each other by, for example, an adhesive tape or an adhesive material.

In this embodiment, the cross-sectional shape of the duct 2 is a hexagonal shape, but it can be a polygonal shape such as a quadrangular shape or an octagonal shape, or any other shape, and the cross-sectional shape can be appropriately changed. be. For example, when installing the duct 2 in a state where it penetrates a beam or the like of a building, the cross-sectional shape of the duct 2 is a polygon of hexagon or more, so that the duct is passed through a circular through hole formed in the beam or the like. 2 can be installed.

The insertion members 3 and 4 are made of corrugated cardboard, and as shown in FIG. 1, two types of insertion members 3 and 4 are provided. Incidentally, FIG. 1 illustrates a case where one first insertion member 3 and two second insertion members 4 are provided.

As shown in FIG. 1, the first insertion member 3 is provided with a plate-shaped large diameter portion 36 extending toward the outer peripheral side of the duct 2 and having a diameter larger than that of the duct 2. The large-diameter portion 36 is formed in a rectangular shape in the axial direction of the duct 2, and can be suspended and supported by the suspending tools 5 and 6, and can be mounted at the mounting target location. ing. Like the first insertion member 4, the second insertion member 4 also has a plate-shaped large diameter portion 44 extending toward the outer peripheral side of the duct 2 and having a diameter larger than that of the duct 2, as shown in FIG. .. This large-diameter portion 44 is also formed in a rectangular shape in the axial direction of the duct 2, and can be suspended and supported by the suspending tools 5 and 6, and can be mounted at the mounting target location. ing.

As shown in FIGS. 3 to 5, the first insertion member 3 is a member that is suspended and supported by the suspending tools 5 and 6 (see FIG. 1) to suspend and support the duct 2 to be inserted. At the same time, it is configured as a member for connecting the ducts 2 to each other. Therefore, by providing the first insertion member 3, the duct 2 can be suspended and supported and the ducts 2 can be connected to each other, and the configuration can be simplified.

As shown in FIGS. 2, 4 and 5, the first insertion member 3 has a tubular connecting portion 31 extending in the axial direction X of the duct 2 (see FIGS. 4 and 5) and a connecting portion 31 more than the connecting portion 31. A contact portion 32 extending inward of the duct 2 and a first insertion member sheet body 33 (for example, aluminum foil or the like) covering the connection portion 31 and the periphery of the contact portion 32 are provided. Incidentally, in FIG. 2, in the first insertion member 3, the sheet body 33 for the first insertion member is omitted. Each of the connection portion 31 and the contact portion 32 is made of corrugated cardboard, and the first insertion member 3 covers the periphery of the connection portion 31 and the contact portion 32 with the first insertion member sheet body 33. It has functions such as non-combustible performance, airtightness, heat insulation performance, moisture resistance, and dew condensation prevention. The connecting portion 31, the abutting portion 32, and the sheet body 33 for the first insertion member are fixed to each other by, for example, an adhesive tape or an adhesive.

As shown in FIGS. 2, 4 and 5, a pair of connecting portions 31 are provided, one abutting portion 32 is provided, and the connecting portion 31 and the abutting portion 32 are configured separately. As shown in FIG. 4, the pair of connecting portions 31 are arranged so as to sandwich the abutting portion 32 from both sides in the axial direction X of the duct 2. As shown in FIG. 2, each of the connecting portion 31 and the abutting portion 32 is formed with an insertion hole portion 34 which allows the duct 2 to be inserted into the central portion thereof and which can be fitted externally to the duct 2. In this embodiment, since the cross-sectional shape of the duct 2 is a hexagonal shape, the insertion hole portion 34 of the connecting portion 31 and the abutting portion 32 is also formed in a hexagonal shape.

As shown in FIG. 4, the connecting portion 31 includes a long guide portion 31a in the axial direction X of the duct 2 and a large diameter portion 31b extending from one end portion of the guide portion 31a to the outer peripheral side of the duct 2. Has been done. FIG. 2 shows a state in which the guide portion 31a and the large diameter portion 31b are assembled in the connection portion 31, and for example, the guide portion 31a and the large diameter portion 31b are fixed with an adhesive tape or an adhesive. ing.

As shown in FIGS. 2, 4 and 5, the abutting portion 32 is formed in a plate shape extending in a direction orthogonal to the axial direction X of the duct 2. The outer end of the contact portion 32 is flush with or substantially flush with the outer end of the large diameter portion 31b in the connection portion 31, and the inner end thereof is the inner end of the guide portion 31a in the connection portion 31. It is configured to protrude inward of the duct 2 with respect to the duct 2. The inner end portion of the contact portion 32 is flush with or substantially flush with the inner surface portion of the duct 2 to be connected, and the contact portion 32 is configured so as not to protrude inward of the duct 2 from the inner surface portion of the duct 2. Has been done.

Incidentally, in this embodiment, as shown in FIG. 2, an example in which the large diameter portion 31b is provided as the connecting portion 31 is shown, but for example, it is also possible to provide the large diameter portion 31b as the contacting portion 32. It is possible to appropriately change whether the large diameter portion 31b is assembled as the connecting portion 31 or the large diameter portion 31b is assembled as the contacting portion 32.

When connecting the ducts 2 to each other, as shown in FIG. 5, the inner surface portion of the guide portion 31a in the connecting portion 31 abuts on the connected duct 2 and guides the ducts 2 to each other in the axial direction X. It is configured to be freely connectable. With the duct 2 fitted inward to the connection portion 31, as shown by the arrow in FIG. 5, the inner surface of the guide portion 31a in the connection portion 31 is simply moved by simply moving the duct 2 to the back side of the connection portion 31. The duct 2 can be smoothly guided along the axial direction X at the portion. The contact portion 32 is arranged at the center position of the first insertion member 3 in the axial direction X of the duct 2. By moving the duct 2 until the tip end portion of the duct 2 is abutted against the abutting portion 32, the duct 2 can be positioned at a desired position suitable for connection. In this way, the ducts 2 are connected to each other by fixing the ducts 2 to the desired positions with, for example, an adhesive tape or an adhesive in a state where each of the ducts 2 to be connected is positioned at a desired position. Since the connecting portions 31 on both sides of the abutting portion 32 have the same length in the axial direction X of the duct 2, each of the ducts 2 to be connected is moved until the tip portion thereof is abutted against the abutting portion 32. Then, since the insertion distance for inserting the duct 2 to be connected to the connection portion 31 is the same, the ducts 2 can be connected to each other in a well-balanced manner.

As shown in FIGS. 2, 4 and 5, the large-diameter portion 36 of the first insertion member 3 is a combination of three corrugated cardboards of the large-diameter portion 31b of the pair of connecting portions 31 and the abutting portion 32, respectively. It is configured. The large-diameter portion 36 is configured by superimposing three corrugated cardboards of the large-diameter portion 31b and the contact portion 32 in the axial direction X of the duct 2, and the duct 2 is more than the guide portion 31a in the connection portion 31. It has a shape that extends to the outer peripheral side of.

As shown in FIGS. 1, 3 and 4, the large diameter portion 36 of the first insertion member 3 is configured to be suspended and supported by the suspending tools 5 and 6. As shown in FIG. 1, the suspension support portion by the suspending tools 5 and 6 is the upper end portion of the portion extending upward from the duct 2 in the large diameter portion 36. As shown in FIG. 2, three hanging holes 35 are formed at the upper end of the large diameter portion 36 in a state of being lined up in the lateral width direction of the duct 2, and the hanging holes 35 located at the center are formed. It is suspended and supported by the first suspending tool 5, and the suspending holes 35 located on both ends are suspended and supported by the second suspending tool 6.

As shown in FIGS. 3 and 4, the first hanging tool 5 has a hanging metal fitting 51 whose upper end is fixed to the ceiling or the like and an L that can be freely connected to the lower end of the hanging metal fitting 51. A character-shaped connecting metal fitting 52 is provided. The hanging metal fitting 51 and the connecting metal fitting 52 are connected by fastening with a nut 53 in a state where the lower end portion of the hanging metal fitting 51 is inserted into the hole of the connecting metal fitting 52. The connecting metal fitting 52 and the large diameter portion 36 are connected by fastening the bolt 54 inserted through the hole portion of the connecting metal fitting 52 with the nut 53 while being inserted through the hanging hole portion 35 of the large diameter portion 36. Has been done.

As shown in FIG. 1, the second suspending tool 6 is formed in a wire shape, and its upper end is fixed to a ceiling or the like. By inserting the ring portion formed at the lower end of the second hanging tool 6 into the hanging hole portion 35 of the large diameter portion 36, the hanging hole portions 35 located on both ends are the second hanging tool. It is suspended and supported by 6.

As shown in FIGS. 1, 6 and 7, the second insertion member 4 is suspended and supported by the suspending tools 5 and 6, and is configured as a member for suspending and supporting the duct 2 to be inserted. There is. As shown in FIGS. 2, 6 and 7, the second insertion member 4 includes a plurality of rectangular plate-shaped unit members 41 and a second insertion member sheet body 42 (for example, a sheet body 42 for covering the periphery of the plurality of unit members 41 (for example,). , Aluminum foil, etc.). Incidentally, in FIG. 2, in the second insertion member 4, the sheet body 42 for the second insertion member is omitted.

As shown in FIGS. 2, 6 and 7, the second insertion member 4 superimposes a plurality of unit members 41 in the axial direction X of the duct 2 and surrounds the plurality of unit members 41 with the second insertion member. It is configured to be covered with a sheet body 42. Incidentally, although the three unit members 41 are provided in this embodiment, the number of the unit members 41 can be changed as appropriate. Each of the plurality of unit members 41 is made of corrugated cardboard, and the second insertion member 4 is incombustible and airtight by covering the periphery of the plurality of unit members 41 with the sheet body 42 for the second insertion member. It has functions such as performance, heat insulation performance, moisture resistance, and dew condensation prevention. The plurality of unit members 41 and the sheet body 42 for the second insertion member are fixed by, for example, an adhesive tape or an adhesive.

As shown in FIG. 2, each of the plurality of unit members 41 is formed with an insertion hole portion 43 (corresponding to a hole portion) that allows the duct 2 to be inserted through the central portion thereof and is freely fitted into the duct 2. .. In this embodiment, since the cross-sectional shape of the duct 2 is a hexagonal shape, the insertion hole portion 43 of the unit member 41 is also formed in a hexagonal shape. In this way, by fitting the insertion hole portion 43 of the unit member 41 to the duct 2, the duct 2 can be prevented from being deformed or the like, and the cross-sectional shape of the duct 2 can be maintained in a hexagonal shape.

Like the large diameter portion 36 of the first insertion member 3, the large diameter portion 44 of the second insertion member 4 is suspended and supported by the suspending tools 5 and 6, as shown in FIGS. 1, 6 and 7. It is freely configured. As shown in FIG. 1, the suspension support portion by the suspending tools 5 and 6 is the upper end portion of the portion extending upward from the duct 2 in the large diameter portion 44. As shown in FIG. 2, three hanging holes 45 are formed in the upper end portion of the large diameter portion 44 in a state of being lined up in the lateral width direction of the duct 2, and the hanging holes 45 located at the center are formed. It is suspended and supported by the first suspending tool 5, and the suspending holes 45 located on both ends are suspended and supported by the second suspending tool 6.

In the large diameter portion 44 of the second insertion member 4, the suspension hole portion 45 is suspended and supported by the first suspension tool 5, and the suspension hole portion 45 is suspended by the second suspension tool 6. Since the structure for supporting is the same as the structure for suspending and supporting in the large diameter portion 36 of the first insertion member 3, the description thereof will be omitted.

In the duct system 1, the duct 2 can be suspended and supported only by providing the first insertion member 3 and the second insertion member 4, and the large diameter portions 36 and 44 can be placed on the floor or the like. The installation work of the duct 2 can be carried out while the lower end portion is placed, and the workability can be improved. Since the first insertion member 3 and the second insertion member 4 are made of corrugated cardboard, the weight of the insertion members 3 and 4 can be reduced, and the weight of the entire system can be effectively reduced. However, it is possible to improve workability.

As for the installation form of the duct 2, as shown in FIG. 1, not only the form of suspending and supporting the duct 2 but also the duct 2 can be installed by laying it on a place to be installed such as a floor. In this case, by placing the large diameter portions 36 and 44 on the installation target location such as the floor portion, the duct 2 can be installed in the installation target location.

The duct 2 can be suspended and supported not only by the large diameter portion 36 of the first insertion member 3 but also by the large diameter portion 44 of the second insertion member 4, and the duct 2 can be suspended and supported on a place to be mounted such as a floor portion. It can also be placed. Therefore, the installation location of the insertion members 3 and 4 can be freely selected according to the arrangement condition of the duct 2 and various other conditions, and the workability can be effectively improved.

[Another Embodiment]
Other embodiments of the present invention will be described. It should be noted that the configurations of the respective embodiments described below are not limited to being applied independently, but can also be applied in combination with the configurations of other embodiments.

(1) In the above embodiment, an example including the first insertion member 3 and the second insertion member 4 is shown, but for example, only the first insertion member 3 or only the second insertion member 4 may be provided.

(2) In the above embodiment, the first insertion member 3 is provided with the contact portion 32 in addition to the connection portion 31, but the contact portion 32 may not be provided and a pair of connections may be provided. The first insertion member 3 can also be configured by the portion 31.

(3) In the above embodiment, the example in which the second insertion member 4 is provided with a plurality of unit members 41 is shown, but the second insertion member 4 can also be configured from one member. Further, the length of the second insertion member 4 in the axial direction X of the duct 2 can be appropriately changed, and the number of unit members 41 is changed according to the length of the second insertion member 4. You can also do it.

1 Duct system 2 Duct 3 First insertion member (insertion member)
4 Second insertion member (insertion member)
5 First hanging tool (hanging tool)
6 Second hanging tool (hanging tool)
31 Connection part 32 Mounting part 36 Large diameter part of the first insertion member 43 Insertion hole part (hole part)
44 Large diameter part of the second insertion member

Claims (5)

A duct made of cardboard and
It is made of corrugated cardboard and is provided with an insertion member through which the duct is inserted.
The insertion member has a plate shape extending toward the outer peripheral side of the duct and having a diameter larger than that of the duct, and is provided with a large diameter portion formed in a rectangular shape in the axial direction of the duct.
The large-diameter portion can be suspended and supported by a hanging tool, and can be mounted at a place to be mounted.
The insertion member is a duct system in which a plurality of corrugated cardboard members are superposed in the axial direction of the duct. The duct system according to claim 1, wherein the insertion member has a hole that fits into the duct. The insertion member is provided with a cylindrical connection portion extending in the axial direction of the duct.
The duct system according to claim 1, wherein the connecting portion guides the duct in the axial direction thereof so that the ducts can be freely connected to each other. The connection portion is configured in a cylindrical shape that can be fitted externally to the duct.
The duct system according to claim 3, wherein the duct system is arranged in an intermediate portion of the connection portion extending in the axial direction of the duct, and is provided with a contact portion extending inward of the duct from the connection portion. The connection portion and the contact portion are configured as separate bodies.
The duct system according to claim 4, wherein the connection portion is arranged in a state of sandwiching the contact portion from both sides in the axial direction of the duct.

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