Holder for drain pipe

Abstract

To accurately install a drain pipe at a predetermined position by simple work.SOLUTION: A holder 1 for drain pipe includes a first fixing part 10 and a second fixing part 20, and a connecting part 30 for connecting the first fixing part 10 and the second fixing part 20. The first fixing part 10, the second fixing part 20, and the connecting part 30 are integrally molded of a resin material. In the connecting part 30, a plurality of support parts 41, 42, and 43 for supporting the drain pipe from below are formed at intervals from each other in the axial direction of the drain pipe, and holding parts 51 and 52 for holding both side face parts and upper face parts of the drain pipe are formed.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present disclosure relates to a holder for drainage piping for holding a drainage piping to, for example, reinforcement bars or main reinforcement bars when pouring foundation concrete. [Background technology]

[0002] For example, Patent Document 1 discloses a drainage pipe installed in a concrete foundation. The drainage pipe includes a pipe body that is installed so as to penetrate the vertical wall surface of the concrete foundation in the thickness direction, and a cover member for keeping the pipe body closed under normal conditions. The pipe body is embedded in the vertical wall surface of the concrete foundation. One opening in the axial direction of the pipe body opens to the inside of the foundation, while the other opening opens to the outside of the foundation, and the cover member is removably attached to the opening that opens to the outside of the foundation.

[0003] Furthermore, for example, if water accumulates inside the foundation concrete due to heavy rain, the cover member can be removed from the pipe body, making it possible to drain the water that has accumulated inside the foundation concrete from the pipe body to the outside of the foundation concrete. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2012-207499 A Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, at a site where work to install drainage piping as in Patent Document 1 is carried out, a method may be considered in which drainage piping 100 is fixed to reinforcing bars 101 with wire 102 as shown in FIG. 17 before concrete is poured.

[0006] However, when the wire 102 is used for fixing, the drainage pipe 100 is likely to tilt. In addition, the flow pressure during concrete pouring may cause the drainage pipe 100 to displace in the axial or radial direction. For this reason, it has been difficult to install the drainage pipe 100 at a predetermined position with high accuracy.

[0007] Also, as shown in Fig. 18, there is a case where the drainage pipe 100 is installed on a mat foundation. In this case, as shown in Fig. 19, the drainage pipe 100 is installed between the forms 400, and then concrete is poured. The drainage pipe 100 can be placed on the mat foundation so that the drainage pipe 100 does not move due to the flow pressure of the concrete.

[0008] However, in the case of a slab foundation, the drainage pipe 100 must be held in the air, making the pipe 100 unstable. As a result, it is difficult to install the pipe 100 in the specified position with precision.

[0009] The present disclosure has been made in consideration of the above points, and an object of the present disclosure is to enable a water drainage pipe to be installed at a predetermined position with high accuracy through simple operations. [Means for solving the problem]

[0010] In order to achieve the above object, one aspect of the present disclosure can be premised on a drainage pipe holder for holding a drainage pipe installed in a rising portion of foundation concrete. The drainage pipe holder is formed to extend along first and second reinforcement bars extending in the vertical direction, respectively, and includes a first fixing part and a second fixing part fixed to the first and second reinforcement bars, respectively, and a connecting part extending from the first fixing part to the second fixing part and connecting the first fixing part and the second fixing part.

[0011] The first fixing portion, the second fixing portion and the connecting portion are integrally molded from a resin material. The connecting portion has a plurality of support portions spaced apart from one another in the axial direction of the water drainage pipe for supporting the water drainage pipe from below, and a holding portion for holding both side portions and an upper surface of the water drainage pipe.

[0012] According to this configuration, when the first and second fixing parts are fixed to the first and second reinforcement, the first and second fixing parts extend along the first and second reinforcement, so that the contact area between them becomes large and they can be fixed firmly. This allows the drainage piping holder to be stably attached to the first and second reinforcement.

[0013] The drainage pipe is supported from below by a plurality of support parts spaced apart in the axial direction, so tilting of the drainage pipe due to flow pressure during concrete pouring is suppressed. In addition, both side and top surfaces of the drainage pipe are held by retaining parts, so axial and radial displacement of the drainage pipe due to flow pressure during concrete pouring is suppressed.

[0014] The resin material constituting the first fixing portion, the second fixing portion and the connecting portion may have elasticity. In this case, the first fixing portion can be formed to have an arc-shaped cross section covering more than half of the circumferential area on the outer peripheral surface of the first reinforcement. According to this configuration, when the first fixing portion is fixed to the first reinforcement, if the first reinforcement is inserted between both circumferential ends of the first fixing portion, the first fixing portion is elastically deformed in a direction in which the distance between both circumferential ends of the first fixing portion increases. When the first reinforcement is completely inserted inside the first fixing portion, the shape of the first fixing portion tries to be restored, and the first fixing portion covers more than half of the circumferential area on the outer peripheral surface of the first reinforcement, so that the first fixing portion is prevented from falling off the first reinforcement.

[0015] The first fixed part may have protrusions formed at both circumferential ends thereof, the protrusions protruding radially outward and extending in the up-down direction. That is, by forming the protrusions extending in the up-down direction at both circumferential ends of the first fixed part, the protrusions function as ribs, thereby suppressing deformation of the first fixed part.

[0016] The support parts may include a first support part supporting an axial middle part of the drainage pipe, a second support part supporting one axial end part of the drainage pipe, and a third support part supporting the other axial end part of the drainage pipe. With this configuration, the drainage pipe is supported by the support parts at three or more points spaced apart in the axial direction, so that tilt of the drainage pipe can be suppressed.

[0017] The retaining portion may include a first retaining portion extending upward from the first support portion along one side surface of the drainage pipe, and a second retaining portion extending upward from the first support portion along the other side surface of the drainage pipe. With this configuration, the drainage pipe can be fixed by being sandwiched from both sides by the first retaining portion and the second retaining portion, making it even more difficult for the drainage pipe to be displaced in the radial direction.

[0018] The tip of the first retaining portion and the tip of the second retaining portion may be disposed on the upper surface of the water drainage pipe. In this case, the tip of the first retaining portion and the tip of the second retaining portion may be formed with a first convex portion and a second convex portion that protrude upward and around which a wire is wound. According to this configuration, when the wire is wound around the first convex portion and the second convex portion, the water drainage pipe can be fastened by the first retaining portion and the second retaining portion.

[0019] The tip of the first holding part may be provided with a third fixing part that is formed so as to extend along the horizontal main reinforcement and is fixed to the main reinforcement. With this configuration, the main reinforcement can be used to fix the water drainage pipe so that it does not shift from a predetermined position. Effect of the Invention

[0020] As described above, the first fixing portion and the second fixing portion extending along the first reinforcement and the second reinforcement, respectively, are connected by a connecting portion, and a plurality of support portions are formed on the connecting portion at intervals in the axial direction of the water drainage pipe, and holding portions are formed to hold both side portions and the top portion of the water drainage pipe, so that the water drainage pipe can be accurately installed in the specified position with simple operations. [Brief description of the drawings]

[0021] [Figure 1] 1 is a cross-sectional view of a concrete foundation in which a drainage pipe is installed using a drainage pipe holder according to an embodiment of the present invention. [Diagram 2] 1 is a front view showing a state in which the drainage pipe is held in the reinforcement by the drainage pipe holder. FIG. [Diagram 3] 11 is a horizontal cross-sectional view of a rising portion in which a drainage pipe is installed using a drainage pipe holder. FIG. [Figure 4] FIG. [Diagram 5] This is a view of the drainage piping from the outdoor side. [Figure 6] FIG. [Figure 7] FIG. 13 is a view of the drain pipe holder as seen from the outdoor side. [Figure 8] FIG. 4 is a plan view of the drain pipe holder. [Figure 9] FIG. 4 is a left side view of the water drain pipe holder. [Figure 10] FIG. 2 is a front view showing the arrangement of main reinforcement and reinforcement bars before additional reinforcing bars are installed. [Figure 11] This is a view equivalent to Figure 10 showing the completed state after additional reinforcement bars have been installed. [Figure 12] 10 and shows the state after installation of the water drainage pipe holder is completed. FIG. [Figure 13] FIG. 7 is a view corresponding to FIG. 6 according to a modified example of the embodiment. [Figure 14] FIG. 8 is a view corresponding to FIG. 7 according to a modified example of the embodiment. [Figure 15] FIG. 9 is a view corresponding to FIG. 8 according to a modified example of the embodiment. [Figure 16] 9 according to a modified example of the embodiment. FIG. [Figure 17] FIG. 13 is a diagram illustrating a conventional method for fixing a water drain pipe. [Figure 18] FIG. 1 is a diagram illustrating a method for installing a conventional drainage pipe on a mat foundation. [Figure 19] FIG. 1 is a diagram illustrating a stage in the process of installing a conventional drainage pipe on a mat foundation. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that the following description of the preferred embodiments is merely illustrative in nature and is not intended to limit the present invention, its applications, or its uses.

[0023] 1 to 3 are cross-sectional views of a concrete foundation 300 in which a drainage pipe 200 is installed using a drainage pipe holder 1 according to an embodiment of the present invention. This concrete foundation 300 is a so-called strip footing, and is used as the foundation of various buildings such as houses, offices, stores, factories, warehouses, etc. The concrete foundation 300 has a base plate portion 301 called a footing, and a rising portion 302 that rises upward from the base plate portion 301.

[0024] 2 and 3, a plurality of reinforcements A1, A2, and A3 extending in the up-down direction (vertical direction) and a plurality of main reinforcements B1, B2, and B3 extending in the horizontal direction are embedded in the concrete foundation 300. The reinforcement A2 is a reinforcing bar, as will be described later. The reinforcement A2 is the first reinforcement, and the reinforcement A3 is the second reinforcement.

[0025] The multiple reinforcements A1, A2, A3 extending in the vertical direction are spaced apart from one another in the horizontal direction, and extend continuously from the base plate portion 301 to the upper part of the rising portion 302. The multiple main reinforcements B1, B2, B3 extending in the horizontal direction are spaced apart from one another in the vertical direction. The intersections of the reinforcements A1, A2, A3 extending in the vertical direction and the main reinforcements B1, B2, B3 extending in the horizontal direction are fastened by wire C or the like.

[0026] In Fig. 1, the left side of the rising portion 302 is the outdoor side, and the right side of the rising portion 302 is the indoor side. The ground is indicated by a two-dot chain line indicated by the symbol G. Also, slab concrete 303 is poured on the indoor side of the rising portion 302. Note that in the explanation of this embodiment, the present invention will be described as being applied to a strip foundation, but the present invention can also be applied to a so-called slab foundation in addition to the strip foundation.

[0027] The drain pipe 200 is installed in the rising portion 302. As shown in FIG. 4, the drain pipe 200 includes a pipe body 201, a cover member 202, and a packing 203. The longitudinal direction and the axial direction of the drain pipe 200 coincide with each other. The drain pipe 200 is installed so that its axial direction coincides with the thickness direction of the rising portion 302. In the installed state, one opening in the axial direction of the pipe body 201 opens to the wall surface on the outdoor side of the rising portion 302, and the other opening in the axial direction of the pipe body 201 opens to the wall surface on the indoor side of the rising portion 302. In addition, the horizontal direction of the radial direction of the drain pipe 200 coincides with the width direction of the drain pipe 200.

[0028] The pipe body 201 is composed of a cylindrical member made of resin with both ends open. The lower surface portion 201a of the pipe body 201 is formed to extend horizontally. As shown in FIG. 5, one side surface portion 201b of the pipe body 201 is formed to extend upward from one edge portion in the width direction of the lower surface portion 201a. The other side surface portion 201c is formed to extend upward from the other edge portion in the width direction of the lower surface portion 201a. One side surface portion 201b and the other side surface portion 201c are approximately parallel to each other.

[0029] The upper surface portion 201d of the piping body 201 is configured with a curved surface that bulges upward. The shape of this upper surface portion 201d is an arc shape centered on the radial center of the piping body 201. The upper edge portion of one side surface portion 201b is continuous with one edge portion of the upper surface portion 201d in the width direction. The upper edge portion of the other side surface portion 201c is continuous with the other edge portion of the upper surface portion 201d in the width direction.

[0030] The cover member 202 is a member for opening and closing an opening formed at the outdoor end of the piping body 201, and is attached to the piping body 201 in a detachable manner. Specifically, the cover member 202 has a substantially circular blocking plate portion 202a and an annular portion 202b protruding from the back surface of the blocking plate portion 202a into the piping body 201. A groove 202c is formed in the annular portion 202b. Meanwhile, a locking portion 201e protrudes inward from the inner surface of the piping body 201. When the annular portion 202b of the cover member 202 is inserted into the piping body 201 and rotated, for example, in the right direction, the locking portion 201e enters and locks into the groove 202c, and the cover member 202 is attached to the piping body 201. When the cover member 202 in the attached state is rotated leftward, the locking portion 201e comes out of the groove 202c to become in an unlocked state, and the cover member 202 can be removed from the piping main body 201. The packing 203 is disposed between the cover member 202 and the piping main body 201 and is a member for sealing the gap between the cover member 202 and the piping main body 201.

[0031] In this embodiment, anti-termite butyl rubber 204 is provided on the outer peripheral surface of the pipe body 201. The anti-termite butyl rubber 204 is made of butyl rubber containing an anti-termite agent, and is formed so as to surround the entire circumference of the pipe body 201.

[0032] 6 to 9 are diagrams showing the drainage pipe holder 1 alone. As shown in these figures, the outdoor side and indoor side, and the left side and right side of the drainage pipe holder 1 are defined. The outdoor side of the drainage pipe holder 1 is the side that becomes the outdoor side when installed on the rising part 302, and the indoor side of the drainage pipe holder 1 is the side that becomes the indoor side when installed on the rising part 302. The left side of the drainage pipe holder 1 is the side that becomes the left side when viewed from the outdoor side when installed on the rising part 302, and the right side of the drainage pipe holder 1 is the side that becomes the right side when viewed from the outdoor side when installed on the rising part 302. Note that these definitions of directions are provided for the convenience of explanation of the embodiment, and do not limit the orientation of the drainage pipe holder 1 when used.

[0033] The drainage pipe holder 1 is a device for holding the drainage pipe 1 installed on the rising portion 302 of the concrete foundation 300. The drainage pipe holder 1 includes a first fixing portion 10 fixed to the first reinforcement A2, a second fixing portion 20 fixed to the second reinforcement A3, and a connecting portion 30 connecting the first fixing portion 10 and the second fixing portion 20. The first fixing portion 10, the second fixing portion 20, and the connecting portion 30 are integrally molded from a resin material, and therefore the drainage pipe holder 1 is configured as a single part. The resin material constituting the drainage pipe holder 1 has elasticity, and the drainage pipe holder 1 can be molded using a resin material such as polypropylene.

[0034] The first fixing portion 10 extends in the vertical direction along the first reinforcement A2. The vertical dimension of the first fixing portion 10 is not particularly limited, but can be set in the range of 30 mm to 150 mm, for example, from the viewpoint of increasing the contact area with the first reinforcement A2.

[0035] The horizontal cross section of the first fixing part 10 is an arc-shaped cross section. Specifically, when the first fixing part 10 is fixed to the first reinforcement A2, the horizontal cross section of the first fixing part 10 has an arc-shaped cross section that covers more than half of the circumferential area of ​​the outer peripheral surface of the first reinforcement A2. Therefore, the first fixing part 10 has a slit-shaped open part 10a that opens to the side and extends continuously from the upper end to the lower end of the first fixing part 10. Since the arc-shaped cross section of the first fixing part 10 has a shape that covers more than half of the circumferential area of ​​the outer peripheral surface of the first reinforcement A2, the width of the open part 10a is set to be narrower than the outer diameter of the first reinforcement A2.

[0036] When the first fixing part 10 is fixed to the first reinforcement A2, the width of the open part 10a is narrower than the outer diameter of the first reinforcement A2, so the first fixing part 10 is elastically deformed by pressing the first reinforcement A2 firmly against the open part 10a of the first fixing part 10 so that the open part 10a opens. This is made possible by the elasticity of the resin material. This allows the first reinforcement A2 to enter the inside of the first fixing part 10 from the open part 10a.

[0037] When the first reinforcement A2 enters the inside of the first fixed part 10, the first fixed part 10 tries to restore its original shape, and the width of the opening 10a becomes narrower than the outer diameter of the first reinforcement A2, so that the first reinforcement A2 cannot come out of the opening 10a of the first fixed part 10. Also, the restoring force of the first fixed part 10 causes the inner surface of the first fixed part 10 to adhere closely to the outer surface of the first reinforcement A2, so the movement of the first fixed part 10 in the up and down direction is restricted.

[0038] Since the opening 10a is formed in the first fixing part 10, both circumferential ends of the first fixing part 10 are spaced apart from each other. The interval between both circumferential ends of the first fixing part 10 and the width of the opening 10a are the same. At both circumferential ends of the first fixing part 10, first protrusions 10b protruding radially outward are formed. Each of the first protrusions 10b extends in the vertical direction along the circumferential end of the first fixing part 10, and the upper end of the first protrusion 10b is located at the upper end of the first fixing part 10, and the lower end of the first protrusion 10b is located at the lower end of the first fixing part 10. By forming the protrusions 10b extending in the vertical direction at both circumferential ends of the first fixing part 10, the protrusions 10b function like ribs, thereby increasing the rigidity of the first fixing part 10 and suppressing deformation of the first fixing part 10. In addition, the two protrusions 10b are formed so that the distance between them becomes wider as they approach the protruding tip. As a result, both protruding portions 10b function as guides when inserting the first reinforcement A2 into the first fixing portion 10.

[0039] The second fixing part 20 is configured similarly to the first fixing part 10, and extends in the vertical direction along the second reinforcement A3. The horizontal cross section of the second fixing part 20 has an arc-shaped cross section similar to the first fixing part 10. Specifically, when the second fixing part 20 is fixed to the second reinforcement A3, the horizontal cross section of the second fixing part 20 has an arc-shaped cross section that covers more than half of the circumferential area on the outer circumferential surface of the second reinforcement A3. Therefore, the second fixing part 20 has a slit-shaped open part 20a that opens to the side and extends continuously from the upper end to the lower end of the second fixing part 20.

[0040] When fixing the second fixing part 20 to the second reinforcement A3, similar to the case of fixing the first fixing part 10 to the first reinforcement A2, the second fixing part 20 is elastically deformed by pressing the second reinforcement A3 firmly against the open part 20a of the second fixing part 20 to open the open part 20a, and the second reinforcement A3 can be inserted into the inside of the second fixing part 20 from the open part 20a.

[0041] A second protrusion 20b protruding radially outward is formed on both circumferential ends of the second fixing portion 20. Each second protrusion 20b extends in the up-down direction along the circumferential end of the second fixing portion 20, with the upper end of the second protrusion 20b located at the upper end of the second fixing portion 20 and the lower end of the second protrusion 20b located at the lower end of the second fixing portion 20. By forming the protrusions 20b extending in the up-down direction on both circumferential ends of the second fixing portion 20, the protrusions 20b function like ribs.

[0042] The connecting portion 30 extends from the first fixing portion 10 to the second fixing portion 20. A vertical middle portion of the first fixing portion 10 is integrally formed with the left end portion of the connecting portion 30, and a vertical middle portion of the second fixing portion 20 is integrally formed with the right end portion of the connecting portion 30. Note that the first fixing portion 10 and the connecting portion 30 may be formed as separate parts, and the second fixing portion 20 and the connecting portion 30 may be formed as separate parts.

[0043] The connecting part 30 includes a first left rod-shaped part 31, a second left rod-shaped part 32 and a third left rod-shaped part 33 extending rightward from the outer surface of the first fixed part 10. The first left rod-shaped part 31 is located on the outdoor side and extends rightward from the outer surface of the first fixed part 10 so that it is positioned closer to the outdoor side. The third left rod-shaped part 33 is located indoors and extends rightward from the outer surface of the first fixed part 10 so that it is positioned closer to the indoor side. Therefore, the distance between the first left rod-shaped part 31 and the third left rod-shaped part 33 becomes wider the further to the right.

[0044] The second left rod-shaped portion 32 is located between the first left rod-shaped portion 31 and the third left rod-shaped portion 33. The distance between the second left rod-shaped portion 32 and the first left rod-shaped portion 31 becomes wider as it moves further to the right, and the distance between the second left rod-shaped portion 32 and the third left rod-shaped portion 33 becomes wider as it moves further to the right. The first left rod-shaped portion 31, the second left rod-shaped portion 32 and the third left rod-shaped portion 33 extend approximately horizontally.

[0045] The connecting portion 30 includes a left reinforcing portion 34 extending from the right end of the first left rod-shaped portion 31, through the right end of the second left rod-shaped portion 32, to the right end of the third left rod-shaped portion 33. The first left rod-shaped portion 31, the second left rod-shaped portion 32, the third left rod-shaped portion 33, and the left reinforcing portion 34 are disposed at the same height. The left reinforcing portion 34 is a portion that connects the right end of the first left rod-shaped portion 31, the right end of the second left rod-shaped portion 32, and the right end of the third left rod-shaped portion 33. The left reinforcing portion 34 extends substantially horizontally in the thickness direction of the rising portion 302. Therefore, in a plan view, the left reinforcing portion 34, the first left rod-shaped portion 31, and the third left rod-shaped portion 33 form a triangle whose apex is located on the first fixing portion 10 side. The second left rod-shaped portion 32 is positioned so as to cross the triangle formed by the left reinforcing portion 34, the first left rod-shaped portion 31 and the third left rod-shaped portion 33 in the left-right direction.

[0046] The connecting part 30 includes a first right side rod-shaped part 35, a second right side rod-shaped part 36, and a third right side rod-shaped part 37 extending leftward from the outer surface of the second fixed part 20. The first right side rod-shaped part 35, the second right side rod-shaped part 36, and the third right side rod-shaped part 37, and the first left side rod-shaped part 31, the second left side rod-shaped part 32, and the third left side rod-shaped part 33 are configured symmetrically.

[0047] The first right rod-shaped portion 35 is located on the outdoor side and extends leftward from the outer surface of the second fixing portion 20 so that it is positioned closer to the outdoor side as it moves leftward. The third right rod-shaped portion 37 is located indoors and extends leftward from the outer surface of the second fixing portion 20 so that it is positioned closer to the indoor side as it moves leftward. Therefore, the distance between the first right rod-shaped portion 35 and the third right rod-shaped portion 37 becomes wider as it moves leftward.

[0048] The second right rod-shaped portion 36 is located between the first right rod-shaped portion 35 and the third right rod-shaped portion 37. The distance between the second right rod-shaped portion 36 and the first right rod-shaped portion 35 becomes wider as it moves further left, and the distance between the second right rod-shaped portion 36 and the third right rod-shaped portion 37 becomes wider as it moves further left. The first right rod-shaped portion 35, the second right rod-shaped portion 36 and the third right rod-shaped portion 37 extend approximately horizontally.

[0049] The connecting portion 30 includes a right reinforcing portion 38 extending from the right end of the first right rod-shaped portion 35, through the right end of the second right rod-shaped portion 36, to the right end of the third right rod-shaped portion 37. The first right rod-shaped portion 35, the second right rod-shaped portion 36, the third right rod-shaped portion 37, and the right reinforcing portion 38 are disposed at the same height. The right reinforcing portion 38 is a portion that connects the left end of the first right rod-shaped portion 35, the left end of the second right rod-shaped portion 36, and the left end of the third right rod-shaped portion 37. The right reinforcing portion 38 extends substantially horizontally in the thickness direction of the rising portion 302, substantially parallel to the left reinforcing portion 34. Therefore, in a plan view, the right reinforcing portion 38, the first right rod-shaped portion 35, and the third right rod-shaped portion 37 form a triangle whose apex is located on the second fixing portion 20 side. The second right rod-shaped portion 36 is positioned so as to cross in the left-right direction the triangle formed by the right reinforcing portion 38, the first right rod-shaped portion 35, and the third right rod-shaped portion 37.

[0050] In the connecting portion 30, support portions 41, 42, 43 for supporting the drainage pipe 200 from below are formed at intervals from each other in the axial direction of the drainage pipe 200 (thickness direction of the rising portion 302). The support portions 41, 42, 43 include a first support portion 41 that supports the axial middle portion of the drainage pipe 200, a second support portion 42 that supports the portion of the drainage pipe 200 on one axial end side (outdoor side), and a third support portion 43 that supports the portion of the drainage pipe 200 on the other axial end side (indoor side). The first support portion 41, the second support portion 42, and the third support portion 43 are disposed at the same height and are formed in a rod shape extending substantially horizontally. The lengths of the first support portion 41, the second support portion 42, and the third support portion 43 are all set to be the same.

[0051] The first support portion 41 extends in the left-right direction from the right end of the second left rod-shaped portion 32 to the left end of the second right rod-shaped portion 36, and is a portion that connects the right end of the second left rod-shaped portion 32 and the left end of the second right rod-shaped portion 36. The first support portion 41 and the second right rod-shaped portion 36 are located on an extension line of the longitudinal direction of the second left rod-shaped portion 32, and the second left rod-shaped portion 32, the first support portion 41, and the second right rod-shaped portion 36 extend in the left-right direction on the same straight line. In a plan view, the first support portion 41 and the left reinforcing portion 34 are in an orthogonal relationship, and the first support portion 41 and the right reinforcing portion 38 are in an orthogonal relationship.

[0052] The second support portion 42 extends in the left-right direction from the right end portion of the first left rod-shaped portion 31 to the left end portion of the first right rod-shaped portion 35, and connects the right end portion of the first left rod-shaped portion 31 and the left end portion of the first right rod-shaped portion 35. The second support portion 42 and the first support portion 41 are approximately parallel to each other.

[0053] The third support portion 43 extends in the left-right direction from the right end of the third left rod-shaped portion 33 to the left end of the third right rod-shaped portion 37, and connects the right end of the third left rod-shaped portion 33 and the left end of the third right rod-shaped portion 37. The third support portion 43 and the first support portion 41 are approximately parallel to each other.

[0054] The connecting portion 30 is formed with holding portions 51, 52 for holding the side portion 201b and the top portion 201d of the drainage pipe 200. The holding portions 51, 52 include a first holding portion 51 extending upward from the first support portion 41 along one side portion (left side portion) 201b of the drainage pipe 200, and a second holding portion 52 extending upward from the first support portion 41 along the other side portion (right side portion) 201b of the drainage pipe 200. The first holding portion 51 and the second holding portion 52 are both rod-shaped.

[0055] The first retaining portion 51 extends upward from the left end of the first support portion 41 and then curves to the right along the upper surface 201d of the first support portion 41, so that the tip end (upper end) of the first retaining portion 51 is disposed on the upper surface 201d of the water drainage pipe 200. The right end of the second left rod-shaped portion 32 is integrated with the base end (lower end) of the first retaining portion 51. In addition, the longitudinal middle portion of the left reinforcing portion 34 is integrated with the base end of the first retaining portion 51.

[0056] The second retaining portion 52 extends upward from the right end portion of the first support portion 41 and then curves leftward along the upper surface portion 201d of the first support portion 41, such that the tip portion (upper end portion) of the second retaining portion 52 is disposed on the upper surface portion 201d of the water drainage pipe 200. The right end portion of the second right rod-shaped portion 36 is integrated with the base end portion (lower end portion) of the second retaining portion 52. In addition, the longitudinal middle portion of the right reinforcing portion 38 is integrated with the base end portion of the second retaining portion 52.

[0057] A first protrusion 51a and a second protrusion 52a that protrude upward are formed on the tip of the first holding portion 51 and the tip of the second holding portion 52, respectively. As shown in Fig. 2, a wire C is wound around the first protrusion 51a and the second protrusion 52a. By winding and binding the wire C around the first protrusion 51a and the second protrusion 52a, the first protrusion 51a and the second protrusion 52a are held so that they do not separate from each other.

[0058] (Construction instructions) Next, a construction procedure for installing the drainage pipe 200 using the drainage pipe holder 1 will be described. As shown in Fig. 10, the main reinforcements B2 and B3 embedded in the rising portion 302 are combined with the reinforcements A1 and A3 and fastened with wire C. At this time, the portion where the reinforcement is to be added (shown by imaginary line L1) is marked out. Then, as shown in Fig. 11, the reinforcement A2 is installed in the marked out portion and fastened to the main reinforcements B2 and B3 with wire C. The distance between the reinforcement A2 and the reinforcement A3 is the same as the distance between the first fixing portion 10 and the second fixing portion 20 of the drainage pipe holder 1. The reinforcement may be added as necessary.

[0059] Next, the drainage pipe holder 1 is attached to the reinforcements A2 and A3 as shown in Fig. 12. At this time, the first reinforcement A2 is pressed firmly against the open portion 10a of the first fixing portion 10, elastically deforming the first fixing portion 10 so that the open portion 10a opens, and the first reinforcement A2 is inserted into the first fixing portion 10 from the open portion 10a. Also, the second reinforcement A3 is pressed firmly against the open portion 20a of the second fixing portion 20, elastically deforming the second fixing portion 20 so that the open portion 20a opens, and the second reinforcement A3 is inserted into the second fixing portion 20 from the open portion 20a. This temporarily fixes the drainage pipe holder to the reinforcements A2 and A3.

[0060] After the temporary fixing, it is confirmed that the first support part 41, the second support part 42, and the third support part 43 are approximately horizontal. If they are tilted, the height of the first fixing part 10 or the second fixing part 20 is adjusted so that the first support part 41, the second support part 42, and the third support part 43 are approximately horizontal. Then, the first fixing part 10 is fastened to the first reinforcement A2 by wrapping and tying the wire C around it. Similarly, the second fixing part 20 is fastened to the second reinforcement A3 by wrapping and tying the wire C around it.

[0061] 2, the water drainage pipe 200 is inserted between the first holding portion 51 and the second holding portion 52. At this time, the first holding portion 51 and the second holding portion 52 are elastically deformed so that the gap between the first holding portion 51 and the second holding portion 52 increases, whereby the water drainage pipe 200 can be easily inserted.

[0062] The drainage pipe 200 is supported from below by the first support part 41, the second support part 42, and the third support part 43. The drainage pipe 200 supported by the first support part 41, the second support part 42, and the third support part 43 is arranged between the main reinforcement B2 and the main reinforcement B3 between the first reinforcement A2 and the second reinforcement A3. The installation height of the drainage pipe 200 can be changed as desired by changing the mounting height of the drainage pipe holder 1.

[0063] Since the first support part 41, the second support part 42, and the third support part 43 are all at the same height, the water drainage pipe 200 is disposed with its pipe axis substantially horizontal. If it is desired to tilt the water drainage pipe 200 at a predetermined angle, the heights of the first support part 41, the second support part 42, and the third support part 43 can be changed so that the water drainage pipe 200 is at the predetermined angle.

[0064] After inserting the drainage pipe 200 between the first holding part 51 and the second holding part 52, the wire C is wound around the first convex part 51a and the second convex part 52a and tied. This allows the first holding part 51 and the second holding part 52 to hold down the side part 201b and the top part 201d of the drainage pipe 200, and also allows the bottom part 201a of the drainage pipe 200 to be pressed against the top surfaces of the first support part 41, the second support part 42, and the third support part 43, so that the drainage pipe 200 does not move in any of the axial, left-right, and up-down directions. In this way, the drainage pipe 200 can be accurately installed at a predetermined position with a simple operation.

[0065] After the drainage pipe 200 is held in the drainage pipe holder 1, a formwork (not shown) is installed. Then, concrete is poured to form the rising portion 302. When pouring concrete, the flow pressure of the concrete acts on the drainage pipe 200. However, since the drainage pipe 200 is supported from below by the first support portion 41, the second support portion 42, and the third support portion 43 formed at intervals from each other in the axial direction, the inclination of the drainage pipe 200 due to the flow pressure when pouring the concrete is suppressed. In addition, since both side portions 201b and the top portion 201d of the drainage pipe 200 are held by the holding portions 51 and 52, the axial displacement and radial displacement of the drainage pipe 200 due to the flow pressure when pouring the concrete is suppressed.

[0066] (Modification) 13 to 16 show a drainage pipe holder 1 according to a modified embodiment of the present invention. A third fixing part 60 is provided at the tip of the first holding part 51 of the drainage pipe holder 1 according to this modified embodiment, and is formed so as to extend along the horizontal main reinforcement B3 and is fixed to the main reinforcement B3. The third fixing part 60 is integrally molded at the upper end of the extension part 51b that extends upward from the top of the first holding part 51.

[0067] The horizontal cross section of the third fixing part 60 is an arc-shaped cross section. Specifically, when the third fixing part 60 is fixed to the main reinforcement B3, the vertical cross section of the third fixing part 60 has an arc-shaped cross section that covers more than half of the circumferential area of ​​the outer circumferential surface of the main reinforcement B3. Therefore, a slit-shaped opening 60a is formed in the third fixing part 60. Since the arc-shaped cross section of the third fixing part 60 is shaped to cover more than half of the circumferential area of ​​the outer circumferential surface of the main reinforcement B3, the width of the opening 60a is set narrower than the outer diameter of the main reinforcement B3.

[0068] When fixing the third fixing part 60 to the main reinforcement B3, since the width of the open part 60a is narrower than the outer diameter of the main reinforcement B3, the main reinforcement B3 is pressed firmly against the open part 60a of the third fixing part 60 to elastically deform the third fixing part 60 so that the open part 60a opens, and the main reinforcement B3 is inserted from the open part 60a into the third fixing part 60. Although not shown, the third fixing part 60 can be fastened to the main reinforcement B3 by a wire.

[0069] The above-described embodiment is merely illustrative in all respects and should not be construed as limiting. Furthermore, all modifications and variations within the scope of the claims are within the scope of the present invention. [Industrial Applicability]

[0070] As described above, the drainage pipe holder according to the present disclosure can be used, for example, when installing a drainage pipe in the rising portion of a slab foundation. [Explanation of symbols]

[0071] 1 Water drain pipe holder 10 1st fixed part 10b 1st protrusion 20 Second fixed part 20b Second protrusion 30 Connecting part 41, 42, 43 1st support part, 2nd support part, 3rd support part 51, 52 1st holding part, 2nd holding part 60 Third fixed part 200 Water drainage pipe

Claims

1. A water drainage pipe holder for holding a water drainage pipe installed in a rising portion of a foundation concrete, A first fixing portion and a second fixing portion are formed to extend along the first reinforcement and the second reinforcement, respectively, which extend in the vertical direction, and are fixed to the first reinforcement and the second reinforcement, respectively; a connecting portion extending from the first fixed portion to the second fixed portion and connecting the first fixed portion and the second fixed portion, the first fixing portion, the second fixing portion, and the connecting portion are integrally formed from a resin material, A water drainage piping holder in which a plurality of support portions that support the water drainage piping from below are formed at the connecting portion at intervals in the axial direction of the water drainage piping, and a holding portion that holds both side portions and an upper portion of the water drainage piping is formed.

2. The water drain pipe holder according to claim 1, The resin material has elasticity, A holder for drainage piping, wherein the first fixing portion is formed to have an arc-shaped cross-section that covers more than half of the circumferential area on the outer surface of the first reinforcement.

3. The water drain pipe holder according to claim 2, A water drainage pipe holder, wherein a protrusion that protrudes radially outward and extends vertically is formed on each of both circumferential ends of the first fixing portion.

4. The water drain pipe holder according to claim 1, The support portion includes a first support portion that supports the axial middle portion of the drainage pipe, a second support portion that supports the axial end portion of the drainage pipe, and a third support portion that supports the axial end portion of the drainage pipe.

5. The water drain pipe holder according to claim 4, A holder for a drainage pipe, wherein the retaining portion includes a first retaining portion extending upward from the first support portion along one side portion of the drainage pipe, and a second retaining portion extending upward from the first support portion along the other side portion of the drainage pipe.

6. The water drain pipe holder according to claim 5, A tip end of the first holding portion and a tip end of the second holding portion are disposed on an upper surface of the water drain pipe, A water drainage piping holder, wherein a first convex portion and a second convex portion are formed at the tip portion of the first retaining portion and the tip portion of the second retaining portion, respectively, which protrude upward and around which a wire is wound.

7. The water drain pipe holder according to claim 5, A holder for drainage piping, wherein a third fixing portion is formed at a tip portion of the first retaining portion so as to extend along a horizontal main reinforcement and is fixed to the main reinforcement.

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