Duct pedestal, duct device, and duct installation structure

Abstract

To provide a duct base that simplifies an operation of orienting a nail from a fixing unit, a duct device, and a duct installation structure.SOLUTION: A duct base 20 has an opening unit 40 in a fixing unit 31. The opening unit 40 has a contact surface 41 and a wall surface 42. The contact surface 41 is a surface with which a head 51 of a nail 50 having passed through the fixing unit 31 comes into contact. The wall surface 42 connects the contact surface 41 with a second end surface 34 in a thickness direction Z and defines the opening unit 40 together with the contact surface 41. The wall 42 opens the opening unit 40 from a first side surface 35a in a juxtaposition direction X.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a duct pedestal, a duct device, and a duct installation structure.

Background Art

[0002] Long wiring and piping materials such as optical cables, water supply and hot water pipes, air conditioning pipes, and refrigerant pipes for air conditioners are laid along the laying surface of the building wall. Generally, the wiring and piping materials are housed in a duct fixed to the wall. An example of a duct, a building molding material, is fixed to the wall by double-sided tape or nails (see, for example, Patent Document 1). The building molding material of Patent Document 1 includes a facing side portion facing the laying surface of the wall. The double-sided tape is adhered to the outer surface of the facing side portion and the laying surface. The nails are fixed to the wall by penetrating the facing side portion from the inside of the building molding.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] For example, when removing a building molding from a wall, an operator needs to extract a nail driven into the wall from the inside of the building molding. Simplification of the operation of extracting this nail is desired by the operator.

Means for Solving the Problems

[0005] The duct pedestal for solving the above problems is a duct pedestal interposed between a long duct that defines an internal laying path for wiring and piping materials and a wall of a building where the duct is laid. The duct pedestal has a pedestal body having an attachment surface to which the duct is attached, and a fixing portion juxtaposed integrally with the pedestal body in a juxtaposed direction that is one of the directions along the attachment surface. The fixing portion is fixed to the wall by driving a nail passing through the fixing portion into the wall. When the direction in which the axis perpendicular to the attachment surface extends is defined as the thickness direction of the duct pedestal, the fixing portion is one surface in the thickness direction, a first end surface that contacts the wall, a second end surface that is the other surface in the thickness direction, a side surface that connects the first end surface and the second end surface, and an opening portion that recesses from the second end surface in the thickness direction and opens at the side surface. The opening portion has a contact surface that is the bottom surface of the opening portion located at the tip recessed from the second end surface and contacts the head of the nail passing through the fixing portion, a through hole that communicates the contact surface and the first end surface and through which the nail passes, and a wall surface that connects the contact surface and the second end surface in the thickness direction and defines the opening portion together with the contact surface. The gist is that the wall surface opens the opening portion from the side surface in a direction perpendicular to the thickness direction.

[0006] Regarding the duct pedestal, the opening portion may open in a direction parallel to the juxtaposed direction and in a direction opposite to the direction from the fixing portion toward the pedestal body. Regarding the duct pedestal, it has a plurality of the fixing portions. At least two of the fixing portions are arranged on both sides sandwiching the pedestal body in the juxtaposed direction, and each of the two fixing portions sandwiching the pedestal body has an inclined surface that defines a part of the through hole. The inclined surface may be a surface inclined with respect to the axis.

[0007] The duct device for solving the above problems is a duct device having a long duct that defines an internal laying path for wiring and piping materials and a duct pedestal interposed between the duct and a wall of a building where the duct is laid, wherein the duct pedestal is the duct pedestal according to any one of claims 1 to 3.

[0008] Regarding the duct device, the duct pedestal has a plurality of the fixing portions, at least two of the fixing portions are arranged on both sides sandwiching the pedestal body in the parallel arrangement direction, and the dimension in the parallel arrangement direction between the two fixing portions sandwiching the pedestal body may be larger than the width which is the dimension in the direction orthogonal to the longitudinal direction of the duct.

[0009] A duct installation structure for solving the above problems is a duct installation structure in which a duct pedestal is interposed between a long duct that defines an internal laying path for wiring and piping materials and a wall of a building on which the duct is laid, the duct pedestal is the duct pedestal according to claim 1, the first end face contacts the wall, and on the contact surface, the head of the nail passing through the through hole is in contact, and the duct is attached to the attachment surface by attaching the attachment surface and the duct with a double-sided tape, and a part of the periphery of the head faces outside the fixing portion by the opening portion.

Advantages of the Invention

[0010] The present invention simplifies the operation of aligning the direction of the nail from the fixing portion.

Brief Description of the Drawings

[0011]

Figure 1

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Figure 21

Mode for Carrying Out the Invention

[0012] Hereinafter, an embodiment in which a duct pedestal, a duct device, and a duct installation structure are embodied will be described with reference to FIGS. 1 to 9. <Wall of the room> As shown in Fig. 1, the long duct 10 is laid on the laying surface Wa of the ceiling wall W as a building wall. The duct 10 is laid on the ceiling wall W via a plurality of duct pedestals 20. The duct pedestal 20 is fixed to the ceiling wall W by nails 50. The nail 50 has a head 51 and a nail body 52. The duct 10 is made of a synthetic resin material. The major axis of the duct 10 extends in the vertical direction. The direction in which the major axis of the duct 10 extends is defined as the longitudinal direction of the duct 10.

[0013] <Duct> The duct 10 has a duct body 11 and a lid body 15. The duct 10 defines a laying path 18 inside the duct 10.

[0014] <Duct body> The duct body 11 is in the shape of a long gutter. The duct body 11 has a bottom wall 12 and two side walls 13. The bottom wall 12 is in the shape of a long plate. The two side walls 13 are in the shape of long plates. The two side walls 13 rise from the inner surface 12a of the bottom wall 12. Among the directions along the inner surface 12a, the direction perpendicular to the longitudinal direction of the bottom wall 12 is defined as the width direction of the duct body 11.

[0015] The two side walls 13 face each other with a space therebetween in the width direction of the bottom wall 12. Each of the two side walls 13 exists throughout the longitudinal direction of the bottom wall 12. The duct body 11 defines an accommodation space 14 inside. The accommodation space 14 is defined by the bottom wall 12 and the two side walls 13. The duct body 11 opens from between the two side walls 13 and also opens from both longitudinal ends. Each of the two side walls 13 bends so as to protrude outward. The outer surface 12b of the bottom wall 12 is attached to the duct pedestal 20.

[0016] <Lid body> The lid 15 is in the shape of a long gutter. The lid 15 has a top plate 16 and two standing walls 17. The top plate 16 is in the shape of a long plate. The two standing walls 17 rise from the inner surface 16a of the top plate 16. Among the directions along the inner surface 16a of the top plate 16, the direction perpendicular to the longitudinal direction of the top plate 16 is defined as the width direction of the top plate 16. The two standing walls 17 face each other with a space therebetween in the width direction of the top plate 16. Each of the two standing walls 17 exists throughout the longitudinal direction of the top plate 16. The lid 15 opens from between the two standing walls 17 and also opens from both longitudinal ends. Each of the two standing walls 17 bends so as to protrude outward. Each standing wall 17 of the lid 15 is fitted to the outside of each side wall 13 of the duct body 11. The accommodation space 14 is closed throughout the longitudinal direction by the top plate 16 of the lid 15.

[0017] <Laying path 18> The laying path 18 is defined by the bottom wall 12 and side walls 13 of the duct body 11 and the top plate 16 of the lid 15. Note that the laying path 18 may also be defined by the bottom wall 12 and side walls 13 of the duct body 11 and the top plate 16 and standing walls 17 of the lid 15. That is, the shape of the duct 10 and the method of defining the laying path 18 may be changed as appropriate. The laying path 18 is defined throughout the longitudinal direction of the duct 10. The optical cable 19 as the wiring and wiring pipe material is laid in the laying path 18. Examples of the wiring and wiring pipe materials laid in the laying path 18 include, in addition to the optical cable 19, coaxial cables, communication cables, synthetic resin flexible electric conduit pipes, and the like.

[0018] <Duct pedestal> As shown in FIGS. 2 to 6, the duct pedestal 20 has a pedestal body 21 and two fixing portions 31.

[0019] <Pedestal body> The pedestal body 21 is made of a synthetic resin material. An example of the synthetic resin material is polycarbonate and acrylic.

[0020] As shown in FIGS. 2 to 5, the pedestal body 21 is in the shape of a square plate. The pedestal body 21 has an attachment surface 21a and a back surface 21b. A straight line orthogonal to the attachment surface 21a and the back surface 21b is taken as the axis N. The direction in which the axis N extends is taken as the thickness direction Z of the duct pedestal 20.

[0021] The pedestal body 21 has the attachment surface 21a on one side in the thickness direction Z and the back surface 21b on the other side in the thickness direction Z. When looking at the attachment surface 21a in the thickness direction Z, the attachment surface 21a is square-shaped. When looking at the back surface 21b in the thickness direction Z, the back surface 21b is square-shaped.

[0022] One adhesive surface 23a of the double-sided tape 23 is adhered to the attachment surface 21a of the pedestal body 21. The double-sided tape 23 is square-shaped. The square of the double-sided tape 23 is slightly smaller than the square of the attachment surface 21a. That is, the length of each side of the double-sided tape 23 is shorter than the length of each side of the attachment surface 21a.

[0023] <Fixing part> As shown in FIG. 3, the two fixing parts 31 are integral with the pedestal body 21. Specifically, the two fixing parts 31 and the pedestal body 21 are integrally formed. Both fixing parts 31 and the pedestal body 21 are arranged along the reference line L. The direction in which the reference line L extends is taken as the juxtaposition direction X of the duct pedestal 20. The juxtaposition direction X is one of the directions along the attachment surface 21a. In the juxtaposition direction X, both fixing parts 31 are juxtaposed integrally with the pedestal body 21. Among the directions along the attachment surface 21a, the direction orthogonal to the juxtaposition direction X is taken as the extension direction Y of the duct pedestal 20. When looking at the duct pedestal 20 in the thickness direction Z, the dimension L1 of the attachment surface 21a in the juxtaposition direction X is slightly larger than the width of the duct 10. The dimension L1 is the shortest distance between the two fixing parts 31 sandwiching the pedestal body 21.

[0024] Each of the two fixing parts 31 is made of a synthetic resin material. An example of the synthetic resin material is polycarbonate and acrylic. As shown in FIGS. 2 to 5, each of the two fixing portions 31 has a first end face 33, a second end face 34, a first side face 35a, a second side face 35b, and a through hole 43. Also, each of the two fixing portions 31 has two open portions 40. Therefore, it can be said that the duct pedestal 20 has four open portions 40.

[0025] <The first end face, the second end face, the first side face, the second side face> The thickness direction Z of the duct pedestal 20 is also the thickness direction of the fixing portion 31. The first end face 33 is one side in the thickness direction Z of the fixing portion 31, and the second end face 34 is the other side in the thickness direction Z of the fixing portion 31. The first side face 35a and the second side face 35b are the faces connecting the first end face 33 and the second end face 34. The first side face 35a exists at the end in the juxtaposition direction X of each fixing portion 31. The second side face 35b exists at both ends in the extension direction Y of each fixing portion 31.

[0026] The dimensions of the first end face 33 and the second end face 34 in the thickness direction Z are taken as the dimensions of the fixing portion 31 in the thickness direction Z. The dimension of the fixing portion 31 in the thickness direction Z is larger than the dimension of the pedestal body 21 in the thickness direction Z. Each fixing portion 31 protrudes in the thickness direction Z from the back surface 21b of the pedestal body 21. The first end face 33 of the fixing portion 31 is at a position protruding from the back surface 21b of the pedestal body 21. The second end face 34 of the fixing portion 31 is at a position slightly protruding from the attachment surface 21a of the pedestal body 21. When looking at the duct pedestal 20 in the thickness direction Z, the dimension L2 in the juxtaposition direction X including the two fixing portions 31 and the pedestal body 21 is larger than the dimension L1 and the width of the duct 10.

[0027] <Open portion> Each of the four open portions 40 is recessed from the second end face 34 in the thickness direction Z and opens at the first side face 35a. Each of the four open portions 40 is defined by a contact surface 41 and a wall surface 42.

[0028] The contact surface 41 is the bottom surface of the open portion 40 located at the tip recessed from the second end surface 34. The contact surface 41 is located at a position recessed from the second end surface 34 in the thickness direction Z. The contact surface 41 is a flat surface. When looking at the open portion 40 in the thickness direction Z, the contact surface 41 is substantially rectangular in shape. The long side of the contact surface 41 extends in the extending direction Y. The short side of the contact surface 41 extends in the juxtaposed direction X. The dimension of the contact surface 41 in the juxtaposed direction X is the same as or slightly larger than the diameter of the head 51. The dimension of the contact surface 41 in the extending direction Y is much larger than the diameter of the head 51.

[0029] The wall surface 42 is a surface that connects the contact surface 41 and the second end surface 34 in the thickness direction Z. The wall surface 42 has a constant dimension in the thickness direction Z. When looking at the open portion 40 in the thickness direction Z, the wall surface 42 is U-shaped. When looking at the open portion 40 in the thickness direction Z, both ends of the wall surface 42 are connected to the first side surface 35a. When looking at the open portion 40 in the thickness direction Z, both sides of the wall surface 42 in the extending direction Y extend in the juxtaposed direction X from the first side surface 35a toward the attachment surface 21a.

[0030] Therefore, the wall surface 42 opens the open portion 40 outward from the fixing portion 31 in the juxtaposed direction X, which is an example of the direction orthogonal to the thickness direction Z. Thus, the open portion 40 having the contact surface 41 and the wall surface 42 is recessed from the second end surface 34 in the thickness direction Z and opens at the first side surface 35a. That is, the open portion 40 opens in a direction parallel to the juxtaposed direction X and in a direction opposite to the direction from the fixing portion 31 toward the pedestal body 21.

[0031] The dimension from the second end surface 34 to the contact surface 41 in the thickness direction Z is defined as the depth of the open portion 40. The value of the depth of the open portion 40 coincides with the dimension of the wall surface 42 in the thickness direction Z. The value of the depth of the open portion 40 is slightly smaller than the diameter of the head 51 of the nail 50. Note that the value of the depth of the open portion 40 may be changed as appropriate.

[0032] Each of the openings 40 has a surface that defines a through-hole 43. The through-hole 43 communicates the contact surface 41 with the first end surface 33. Therefore, it can be said that the duct pedestal 20 has one surface that defines the through-hole 43 for each opening 40. Each of the four through-holes 43 opens to the contact surface 41 and the first end surface 33. Each through-hole 43 opens to the contact surface 41 and the first end surface 33 so that its longitudinal direction extends in the extending direction Y. It can be said that the contact surface 41 is a surface that surrounds the opening edge of the through-hole 43.

[0033] The opening width of the through-hole 43 in the juxtaposed direction X is slightly larger than the diameter of the nail body 52. Also, the opening width of the through-hole 43 in the juxtaposed direction X is smaller than the diameter of the head 51. The opening width of the through-hole 43 in the juxtaposed direction X is constant in the thickness direction Z. The surfaces that define the through-hole 43 facing each other in the juxtaposed direction X are flat surfaces.

[0034] The opening width of the through-hole 43 in the extending direction Y is much larger than the diameter of the head 51. The opening width of the through-hole 43 in the extending direction Y gradually decreases from the contact surface 41 toward the center in the thickness direction Z. Also, the opening width of the through-hole 43 in the extending direction Y gradually decreases from the first end surface 33 toward the center in the thickness direction Z. Therefore, each of the fixing portions 31 has an inclined surface 43a that defines the through-hole 43 facing the extending direction Y. The inclined surface 43a is a surface that is inclined with respect to the axis N. And each of the inclined surfaces 43a is inclined from the contact surface 41 toward the center of the fixing portion 31 and is inclined from the first end surface 33 toward the center of the fixing portion 31. The two inclined surfaces 43a facing the extending direction Y approach each other from the contact surface 41 toward the center of the fixing portion 31 and approach each other from the first end surface 33 toward the center of the fixing portion 31. And a nail 50 is inserted into the through-hole 43. The length of the nail body 52 is sufficiently longer than the thickness of the fixing portion 31.

[0035] Each of the four openings 40 is recessed from the second end face 34 of the fixing part 31. Therefore, the contact surface 41 that forms the bottom surface of the opening 40 is formed at a position recessed from the second end face 34. Each of the four openings 40 opens outward at the second end face 34 in the thickness direction Z and also opens outward at the first side face 35a in the juxtaposed direction X. That is, each of the four openings 40 opens forward at the second end face 34 and also opens at the side face at the first side face 35a. Therefore, each of the four openings 40 opens outward in two directions.

[0036] <Duct device> The duct device 60 has a duct 10 and a duct pedestal 20. <Duct installation structure> As shown in FIGS. 1, 6, and 7, a duct installation structure is installed on the laying surface Wa of the indoor wall W. This duct installation structure lays the duct 10 on the indoor wall W via a plurality of duct pedestals 20. When viewing the duct installation structure along the direction orthogonal to the laying surface Wa, it is regarded as a front view. In the front view, the juxtaposed direction X of the pedestal body 21 and the fixing part 31 is the horizontal direction. Also, in the front view, the extending direction Y is the vertical direction. And the arrangement direction of the plurality of duct pedestals 20 is the vertical direction.

[0037] As shown in FIG. 6, each duct pedestal 20 is fixed to the indoor wall W by driving a nail 50 inserted through each through hole 43 into the indoor wall W. The nails 50 are inserted one by one through each through hole 43.

[0038] Among the two through holes 43 arranged in the vertical direction, the nail 50 inserted through the upper through hole 43 is inserted through the through hole 43 such that the nail body 52 protrudes obliquely upward from the contact surface 41 toward the first end face 33. Among the two through holes 43 arranged in the vertical direction, the nail 50 inserted through the lower through hole 43 is inserted through the through hole 43 such that the nail body 52 protrudes obliquely downward from the contact surface 41 toward the first end face 33.

[0039] The nail 50 is guided to be inclined obliquely by the inclined surface 43a of the through hole 43. At this time, as the tip of the nail body 52 moves away from the first end surface 33 of the fixing portion 31, the nail 50 is inserted into the through hole 43 so that the interval between the nail bodies 52 adjacent to each other in the extending direction Y widens.

[0040] The duct pedestal 20 is fixed to the indoor wall W by four nails 50. Each of the two first end surfaces 33 is in contact with the laying surface Wa of the indoor wall W. A part of the periphery of the head 51 is in contact with the contact surface 41. When the head 51 comes into contact with the contact surface 41, further driving of the nail 50 into the indoor wall W is restricted.

[0041] The head 51 is in contact with or close to the wall surface 42 of the opening 40. Therefore, there is no or only a slight gap between the head 51 and the wall surface 42. Here, the side view of the duct installation structure is defined as viewing from the first side surface 35a side of the fixing portion 31.

[0042] As shown in FIG. 6, a part of the periphery of the head 51 is in contact with a part of the contact surface 41. Therefore, in the side view, the head 51 is inclined with respect to the contact surface 41. A gap S is formed between the inclined head 51 and the contact surface 41.

[0043] Also, the head 51 is accommodated inside the opening 40. The head 51 does not protrude from the second end surface 34 of the fixing portion 31. As shown in FIG. 7, the outer surface 12b of the duct 10 is adhered to the adhesive surface 23a of the double-sided tape 23 adhered to the attachment surface 21a. That is, the outer surface 12b of the duct 10 and the attachment surface 21a of the pedestal body 21 are adhered by the double-sided tape 23. The duct 10 is attached to the attachment surface 21a by the double-sided tape 23. That is, in the duct installation structure, the duct 10 is attached to the attachment surface 21a by adhering the attachment surface 21a and the outer surface 12b of the duct 10 with the double-sided tape 23. The outer surface 12b of the duct 10 is separated from the laying surface Wa of the indoor wall W by the thickness of the duct pedestal 20 and the thickness of the double-sided tape 23. For this reason, the entire duct 10 is separated from the indoor wall W by a plurality of duct pedestals 20.

[0044] The dimension L1 of the attachment surface 21a is slightly larger than the width of the duct 10. For this reason, in the front view of the duct installation structure, each of the two fixing portions 31 protrudes from both end faces in the width direction of the duct 10. Each of the two fixing portions 31 is not covered by the duct 10. For this reason, in the front view of the duct installation structure, each of the heads 51 of the four nails 50 can be visually recognized. Also, each of the four opening portions 40 opens from the first side surface 35a of the fixing portion 31. For this reason, as shown in FIG. 9, each of the heads 51 of the two nails 50 can be visually recognized in the side view of the duct installation structure. That is, by the four opening portions 40, each of the four heads 51 faces outside the fixing portion 31. Therefore, the gap S generated between the head 51 and the contact surface 41 can also be visually recognized in the side view of the duct installation structure.

[0045] A plurality of optical cables 19 are accommodated in the duct 10 laid along the laying surface Wa of the indoor wall W. The optical cable 19 is laid along the laying path 18 of the duct 10.

[0046] <Method of forming duct installation structure> The operator attaches one adhesive surface 23a of the double-sided tape 23 to the attachment surface 21a of the duct pedestal 20. Next, the operator attaches the outer surface 12b of the duct 10 to the other adhesive surface 23a of the double-sided tape 23 to bond the duct pedestal 20 to the duct 10. At this time, the plurality of duct pedestals 20 are bonded at intervals in the longitudinal direction of the duct 10.

[0047] Next, the operator disposes the duct pedestal 20 at a predetermined position on the indoor wall W. The operator inserts the nail body 52 of the nail 50 through each through-hole 43. The operator hits the head 51 of the nail 50 with a hammer or the like to drive the nail body 52 into the indoor wall W. The operator drives the nail 50 so that the nail body 52 is inclined with respect to the laying surface Wa. At this time, the inclined surface 43a guides the nail body 52 so that the nail body 52 is inclined.

[0048] The operator drives the nail 50 until the head 51 contacts the contact surface 41. Then, each fixing portion 31 is fixed to the indoor wall W. As a result, the duct pedestal 20 to which the duct 10 is attached is fixed to the indoor wall W. And when all the duct pedestals 20 are fixed to the indoor wall W, a duct installation structure is formed in which the duct pedestal 20 is interposed between the long duct 10 that defines the laying path 18 inside and the indoor wall W on which the duct 10 is laid.

[0049] <Function> Next, the functions of the duct pedestal 20, the duct device 60, and the duct installation structure will be described. To remove or relocate the duct 10 from the indoor wall W, the duct 10 and the duct pedestal 20 are removed from the indoor wall W.

[0050] As shown in FIG. 8, the operator inserts a cutting tool 54 between the outer surface 12b of the duct 10 and the attachment surface 21a of the pedestal body 21 from the first side surface 35a side of the duct pedestal 20, that is, from the outside of the duct pedestal 20. An example of the cutting tool 54 is a knife. The operator cuts the double-sided tape 23 with the inserted cutting tool 54. The operator separates the duct 10 from the duct pedestal 20. Then, only the plurality of duct pedestals 20 remain on the indoor wall W.

[0051] Next, the operator removes the plurality of duct pedestals 20 from the indoor wall W. As shown in FIG. 9, the operator inserts the tip 53a of the tool 53 into the gap S between the head 51 and the contact surface 41 from the side of the first side surface 35a of the duct pedestal 20, that is, from the outside of the duct pedestal 20. The tool 53 is a minus driver. The tip 53a of the tool 53 is flat.

[0052] When the operator inserts the tip 53a of the tool 53 into the gap S, one end in the thickness direction of the tip 53a contacts the contact surface 41, and the other end in the thickness direction of the tip 53a contacts the head 51. The operator rotates the tool 53 about the central axis of the tool 53. Then, the head 51 is lifted from the contact surface 41 by the tip 53a of the tool 53. As a result, the gap S expands in the thickness direction Z.

[0053] The operator inserts the tip of a pliers (not shown) into the gap S between the head 51 and the contact surface 41 from the side of the first side surface 35a of the duct pedestal 20, that is, from the outside of the duct pedestal 20. Then, the pliers grip the nail body 52. The operator moves the pliers gripping the nail body 52 in the thickness direction Z so as to separate it from the duct pedestal 20. Then, the nail 50 driven into the indoor wall W is pulled out from the fixing portion 31 through the indoor wall W and the through hole 43. The operator performs the same operation on the remaining three nails 50. As a result, the duct pedestal 20 can be removed from the indoor wall W.

[0054] According to the above embodiment, the following effects can be obtained. (1) In the front view of the duct installation structure, there is almost no gap between the head 51 and the wall surface 42. For this reason, it is difficult to grip the head 51 with pliers from the front side of the duct pedestal 20. On the other hand, in the side view of the duct installation structure, the opening 40 opens outward from the first side surface 35a of the duct pedestal 20. This opening 40 exposes the contact surface 41, the head 51, and thus the gap S to the outside from the first side surface 35a of the duct pedestal 20.

[0055] The operator can access the gap S and the head 51 from the first side surface 35a side of the duct pedestal 20. And the operator can use the gap S to separate the head 51 from the contact surface 41. That is, the operator can operate the tool 53 in the direction of pulling out the nail 50 from the indoor wall W from the first side surface 35a side of the duct pedestal 20. By this operation, the nail body 52 can be exposed between the head 51 and the contact surface 41. Therefore, the operator can pick up the nail body 52 with pliers from the first side surface 35a side of the duct pedestal 20. Therefore, according to the duct pedestal 20, compared with the case of pulling out the nail 50 from the front side of the duct pedestal 20, the operation of pulling out the nail 50 can be simplified.

[0056] (2) The value of the depth of the opening 40 is slightly smaller than the diameter of the head 51. For this reason, when the periphery of the head 51 is brought into contact with the contact surface 41, the entire head 51 can be accommodated inside the opening 40. As a result, the head 51 does not protrude from the second end surface 34 of the fixing portion 31. Therefore, when the duct 10 is removed from the duct pedestal 20, the duct 10 will not be caught by the head 51, so that the operation of removing the duct 10 from the duct pedestal 20 is easy to perform.

[0057] (3) The opening 40 opens in the direction opposite to the direction from the fixing portion 31 toward the pedestal body 21. For this reason, when performing the operation of inserting the tip portion 53a of the tool 53 between the head 51 and the contact surface 41 and the operation of rotating the tool 53, the pedestal body 21 does not get in the way. Therefore, according to the duct pedestal 20, the operation of pulling out the nail 50 can be simplified.

[0058] (4) The dimension L1 of the attachment surface 21a in the parallel arrangement direction X is slightly larger than the width of the duct 10. For this reason, when the duct 10 is attached to the attachment surface 21a, the two fixing portions 31 protrude outside the duct 10. Therefore, while the duct 10 is attached to the attachment surface 21a, the nail 50 can be driven into the through hole 43 of the fixing portion 31. As a result, while the duct 10 is attached to the duct pedestal 20, the duct pedestal 20 can be fixed to the indoor wall W.

[0059] (5) The attachment surface 21a of the pedestal body 21 and the second end surface 34 of the fixing portion 31 are located on substantially the same plane. Since the opening portion 40 is recessed from the second end surface 34, the head portion 51 is accommodated inside the opening portion 40. Therefore, access can be made to the double-sided tape 23 from the first side surface 35a side of the duct pedestal 20. That is, the double-sided tape 23 can be cut from the first side surface 35a side of the duct pedestal 20. Then, the operator can cut the double-sided tape 23 with the cutting tool 54 to separate the duct 10 from the duct pedestal 20. Although the double-sided tape 23 remains on the attachment surface 21a, by removing the duct pedestal 20 from the indoor wall W, the peeling marks of the double-sided tape 23 do not remain on the laying surface Wa. Therefore, the operation of peeling the double-sided tape 23 from the indoor wall W becomes unnecessary so that the peeling marks of the double-sided tape 23 do not remain on the laying surface Wa.

[0060] (6) The double-sided tape 23 is in a rectangular shape adhered to the duct pedestal 20. That is, the double-sided tape 23 is not long enough to be adhered to the entire longitudinal direction of the duct 10. Therefore, when the duct 10 is removed from the duct pedestal 20, the peeling marks of the double-sided tape 23 only remain on the duct pedestal 20. Thus, compared with the case where the peeling marks of the double-sided tape 23 remain extending in the longitudinal direction of the duct 10, the deterioration of the appearance after the removal of the duct 10 can be suppressed.

[0061] (7) When the duct 10 is removed from the duct pedestal 20, the peeling marks of the double-sided tape 23 only remain on the duct pedestal 20. And the duct pedestal 20 is removed from the indoor wall W. Therefore, after the duct 10 is removed or relocated from the indoor wall W, only the driving marks of the nails 50 remain on the indoor wall W. Thus, by using the duct pedestal 20, the range of the marks remaining on the indoor wall W can be narrowed.

[0062] (8) The nail 50 is guided to be inclined obliquely by the inclined surface 43a of the through hole 43. At this time, the nail 50 is inserted into the through hole 43 so that the interval between the nail bodies 52 adjacent to each other in the extending direction Y widens. Compared with the case where the nail body 52 is driven in perpendicular to the laying surface Wa, the nail 50 is less likely to come out of the inner wall W of the house. As a result, the duct pedestal 20 is firmly fixed to the inner wall W of the house.

[0063] (9) The nail 50 is guided to be inclined obliquely by the inclined surface 43a of the through hole 43. For this reason, the head 51 contacts the contact surface 41 so as to be inclined with respect to the contact surface 41. As a result, since a gap S can be formed between the head 51 and the contact surface 41, the tip 53a of the tool 53 can be easily inserted between the head 51 and the contact surface 41. Therefore, the operation of separating the head 51 from the contact surface 41 by the tool 53 becomes easy.

[0064] Note that this embodiment can be implemented with the following modifications. This embodiment and the following modification examples can be implemented in combination with each other within a range that is not technically contradictory. ○ The fixing portion 31 and the opening portion 40 may be modified as in the alternative forms shown in FIGS. 10 to 12. In this first alternative form, the wall surface 42 of the opening portion 40 is opened from the first side surface 35a in the direction opposite to the direction from the fixing portion 31 toward the pedestal body 21 among the directions orthogonal to the thickness direction Z, that is, in the juxtaposition direction X. Also, in this first alternative form, the wall surface 42 of the opening portion 40 is opened from the second side surface 35b in the extending direction Y.

[0065] ○ The fixing portion 31 and the opening portion 40 may be modified as in the alternative forms shown in FIGS. 13 to 15. In this second alternative form, the opening portions 40 are provided one by one in each fixing portion 31. Two through holes 43 are provided in each opening portion 40. The wall surface 42 of the opening portion 40 is opened from the first side surface 35a in the direction opposite to the direction from the fixing portion 31 toward the pedestal body 21 among the directions orthogonal to the thickness direction Z, that is, in the juxtaposition direction X.

[0066] ○ The fixing part 31 and the opening part 40 may be modified as in the alternative form shown in FIGS. 16 to 18. In this third alternative form, the opening parts 40 are provided one by one on each fixing part 31. The opening part 40 is provided at the central part of the fixing part 31 in the extending direction Y. One through hole 43 is provided in each opening part 40. The wall surface 42 of the opening part 40 opens the opening part 40 from the first side surface 35a in the direction opposite to the direction from the fixing part 31 to the pedestal main body 21 among the directions orthogonal to the thickness direction Z, that is, in the juxtaposed direction X.

[0067] ○ The fixing part 31 and the opening part 40 may be modified as in the alternative form shown in FIGS. 19 to 21. In this fourth alternative form, the opening part 40 of one fixing part 31 is provided at one end of the fixing part 31 in the extending direction Y. The opening part 40 of the other fixing part 31 is provided at the other end of the fixing part 31 in the extending direction Y. One through hole 43 is provided in each opening part 40. The opening part 40 of one fixing part 31 and the opening part 40 of the other fixing part 31 are arranged on one diagonal line of the duct pedestal 20. The wall surface 42 of the opening part 40 opens the opening part 40 from the first side surface 35a in the direction opposite to the direction from the fixing part 31 to the pedestal main body 21 among the directions orthogonal to the thickness direction Z, that is, in the juxtaposed direction X.

[0068] ○ The wall surface 42 of the opening part 40 may open the opening part 40 from the second side surface 35b in the extending direction Y among the directions orthogonal to the thickness direction Z. ○ The width of the duct 10 may be made the same as the dimension L2 of the duct pedestal 20. In this case, when the duct 10 is attached to the attachment surface 21a, both fixing parts 31 are covered by the duct 10 from the outside in the thickness direction Z. That is, the second end surface 34 of the fixing part 31 and the opening part 40 are covered from the outside in the thickness direction Z by the outer surface 12b of the duct 10. At this time, the contact surface 41 of the opening part 40 is at a position recessed from the second end surface 34. Therefore, a gap in the thickness direction Z is formed between the outer surface 12b of the duct 10 and the head 51.

[0069] In this case, to form the duct installation structure, first, the duct pedestal 20 is fixed to the indoor wall W. Then, the duct 10 is adhered to the mounting surface 21a of the duct pedestal 20. When removing the duct pedestal 20 from the indoor wall W, the nail 50 is moved from the outside of the duct pedestal 20 in the juxtaposed direction X. At this time, the nail 50 can be moved in the thickness direction Z by the dimension of the gap. Then, the penetration of the nail body 52 into the indoor wall W can be made shallower. As a result, the fixing force of the duct pedestal 20 by the nail 50 is weakened. Therefore, when the duct pedestal 20 is moved away from the indoor wall W, the duct pedestal 20 can be removed from the indoor wall W.

[0070] Since the width of the duct 10 is the same as the dimension L2 of the duct pedestal 20, the width of the duct 10 is wide. By using such a duct 10, even if the head 51 is covered by the duct 10 including the fixing portion 31, the duct pedestal 20 can be removed from the indoor wall W while the duct 10 is attached to the duct pedestal 20. Further, the head 51 of the nail 50 is accommodated inside the opening portion 40. For this reason, when cutting the double-sided tape 23 that adheres the duct 10 to the duct pedestal 20, the operation of inserting the cutting tool 54 between the outer surface 12b of the duct 10 and the mounting surface 21a of the pedestal body 21 is not obstructed by the head 51.

[0071] In order to make it easier to extract the nail 50 from the indoor wall W, it may be considered to shorten the length of the nail body 52 or make the penetration of the nail body 52 into the indoor wall W shallower. However, in this case, since the fixing force of the duct pedestal 20 with respect to the indoor wall W is weakened, it is not preferable.

[0072] In the case of the duct pedestal 20, since a gap can be formed between the outer surface 12b of the duct 10 and the head 51, the nail 50 can be moved in the direction of extracting it from the indoor wall W. Therefore, it is not necessary to shorten the length of the nail body 52 or make the penetration of the nail body 52 into the indoor wall W shallower. Therefore, it is possible to suppress the weakening of the fixing force of the duct pedestal 20 with respect to the indoor wall W.

[0073] ○ In the embodiment, when removing or relocating the duct 10 from the indoor wall W, the duct 10 may remain attached to the pedestal body 21. In this case, the operator removes the duct pedestal 20 from the indoor wall W by removing the nail 50 from the fixing portion 31. At this time, the dimension L1 of the attachment surface 21a in the parallel arrangement direction X is slightly larger than the width of the duct 10. Therefore, even when the duct 10 is attached to the attachment surface 21a, the two fixing portions 31 protrude outside the duct 10. Thus, the duct 10 is not located at the movement destination of the nail 50 removed from the fixing portion 31. As a result, the operation of removing the nail 50 can be performed while the duct 10 remains attached to the duct pedestal 20.

[0074] ○ When installing the duct 10 on the indoor wall W, after fixing the duct pedestal 20 to the indoor wall W, the duct 10 may be attached to the attachment surface 21a. The value of the depth of the opening portion 40 is slightly smaller than the diameter of the head portion 51. Therefore, when the peripheral edge of the head portion 51 is brought into contact with the contact surface 41, the entire head portion 51 can be accommodated inside the opening portion 40. As a result, the head portion 51 does not protrude from the second end surface 34 of the fixing portion 31. Thus, when attaching the duct 10 to the duct pedestal 20, the duct 10 is not caught by the head portion 51, and thus the attachment operation of the duct 10 to the duct pedestal 20 is easy to perform.

[0075] ○ The dimensions of the pedestal body 21 and the fixing portion 31 in the thickness direction Z may be the same. ○ The nails 50 adjacent to each other in the extending direction Y may be inserted into the through holes 43 such that the distance between the nail bodies 52 approaches as they are separated from the first end surface 33 of the fixing portion 31.

[0076] Alternatively, the nail 50 may be inserted into the through hole 43 such that the nail body 52 extends in the thickness direction Z. Even in this case, the opening portion 40 opens from the first side surface 35a toward the outside of the fixing portion 31.

[0077] Therefore, since the operator can insert the tip 53a of the tool 53 between the head 51 and the contact surface 41, the operator can operate the tool 53 in the direction of pulling out the nail 50 from the indoor wall W. As a result, the nail body 52 can be exposed between the head 51 and the contact surface 41. Therefore, the operator can pick up the nail body 52 with pliers from the first side surface 35a side of the duct pedestal 20. Therefore, according to the duct pedestal 20, compared with the case of pulling out the nail 50 from the front side of the duct pedestal 20, the operation of pulling out the nail 50 can be simplified. In addition, the operation of pulling out the nail 50 can be performed from different directions on the front side and the side surface of the duct pedestal 20. For this reason, according to the working space for pulling out the nail 50 and the working posture, it is possible to select an easy-to-work direction and perform the operation of pulling out the nail 50.

[0078] ○ The nail 50 may be inserted through the through hole 43 so that all of the nail bodies 52 of three or more nails 50 extend in different directions. ○ Among the four through holes 43, the duct pedestal 20 may be fixed to the indoor wall W by inserting the nail 50 through one, two or three through holes 43.

[0079] ○ A plurality of double-sided tapes 23 may be attached to the attachment surface 21a. For example, two double-sided tapes 23 may be arranged side by side in the juxtaposition direction X and attached. ○ A plurality of ducts 10 may be attached to the attachment surface 21a of one duct pedestal 20. In this case, the same number of double-sided tapes 23 as the number of ducts 10 may be attached to the attachment surface 21a of one duct pedestal 20, and the ducts 10 may be attached to each double-sided tape 23. Further, one large double-sided tape 23 may be attached to one attachment surface 21a, and a plurality of ducts 10 may be attached to the one double-sided tape 23.

[0080] ○ The double-sided tape 23 may be in a long shape that matches the entire dimension in the longitudinal direction of the duct 10. In this case, the attachment surface 21a of the duct pedestal 20 is attached to a part of the long double-sided tape 23 attached to the duct 10. In the tact installation structure, the duct 10 is attached to the attachment surface 21a by attaching the attachment surface 21a and the duct 10 with the double-sided tape 23.

[0081] ○ The adhesion between the attachment surface 21a and the outer surface 12b of the duct 10 may be performed by an adhesive. ○ The installation orientation of the duct pedestal 20 may be changed. In a front view of the duct pedestal 20, the juxtaposition direction X of the pedestal main body 21 and the fixing portion 31 in the duct pedestal 20 may be the vertical direction. In this case, the extending direction Y of the duct pedestal 20 is the horizontal direction.

[0082] ○ The duct 10 is configured in a cylindrical shape from the duct main body 11 and the lid body 15, but it may also be configured as only the duct main body 11 without the lid body 15. ○ The duct pedestal 20 may have one fixing portion 31 arranged side by side with one side of the pedestal main body 21 in the juxtaposition direction X.

[0083] ○ In addition to the two fixing portions 31 that sandwich the pedestal main body 21 in the juxtaposition direction X, the duct pedestal 20 may further include a fixing portion 31 adjacent to the pedestal main body 21 in the extending direction Y. ○ The wall may be an outer wall of a building.

Explanation of Reference Numerals

[0084] N... Axis, X... Juxtaposition direction, Z... Thickness direction, W... Inner wall of the building as a wall, 10... Duct, 18... Laying path, 19... Optical cable as wiring and pipe material, 20... Duct pedestal, 21... Pedestal main body, 21a... Attachment surface, 23... Double-sided tape, 31... Fixing portion, 33... First end face, 34... Second end face, 35a... First side face, 35b... Second side face, 40... Opening portion, 41... Contact surface, 42... Wall surface, 43... Through hole, 43a... Inclined surface, 50... Nail.

Claims

1. A duct pedestal interposed between a long duct that defines an internal laying path for wiring and piping materials and a wall of a building where the duct is laid, having a pedestal body with a mounting surface to which the duct is attached, a fixing portion arranged in parallel with the pedestal body in a juxtaposition direction which is one of the directions along the mounting surface, and the fixing portion is fixed to the wall by driving a nail through the fixing portion into the wall, when the direction in which the axis orthogonal to the mounting surface extends is defined as the thickness direction of the duct pedestal, the fixing portion, a first end face which is one surface in the thickness direction and contacts the wall, a second end face which is the other surface in the thickness direction, a side face connecting the first end face and the second end face, and an opening portion recessed from the second end face in the thickness direction and opening at the side face, the opening portion includes a contact surface which is the bottom surface of the opening portion located at the tip recessed from the second end face and with which the head of the nail driven through the fixing portion contacts, a through hole which communicates the contact surface and the first end face and through which the nail penetrates, and a wall surface which connects the contact surface and the second end face in the thickness direction and defines the opening portion together with the contact surface, the wall surface is characterized in that the opening portion is opened from the side face in a direction orthogonal to the thickness direction. A duct pedestal.

2. The duct pedestal according to claim 1, wherein the opening portion opens in a direction parallel to the juxtaposition direction and in a direction opposite to the direction from the fixing portion toward the pedestal body.

3. The duct pedestal according to claim 1 or claim 2, having a plurality of the fixing portions, at least two of the fixing portions being arranged on both sides sandwiching the pedestal body in the juxtaposition direction, and each of the two fixing portions sandwiching the pedestal body having an inclined surface defining a part of the through hole, the inclined surface being a surface inclined with respect to the axis.

4. A duct device having a long duct that defines an internal laying path for wiring and duct materials, and a duct pedestal interposed between the duct and a wall of a building where the duct is laid, wherein the duct pedestal is the duct pedestal according to any one of Claims 1 to 3.

5. The duct pedestal has a plurality of the fixing portions, at least two of the fixing portions are arranged on both sides sandwiching the pedestal body in the juxtaposed direction, and a dimension in the juxtaposed direction between the two fixing portions sandwiching the pedestal body is larger than a width which is a dimension in a direction orthogonal to the longitudinal direction of the duct. The duct device according to Claim 4.

6. A duct installation structure in which a long duct that defines an internal laying path for wiring and duct materials and a duct pedestal are interposed between the duct and a wall of a building where the duct is laid, the duct pedestal is the duct pedestal according to Claim 1, the first end face contacts the wall, on the contact surface, the head of the nail passing through the through hole is in contact, the duct is attached to the attachment surface by attaching the attachment surface and the duct with a double-sided tape, A duct installation structure in which a part of the periphery of the head faces outside the fixing portion through the opening portion.

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