JP7203638B2 - Corrugated tube device, terminal member for corrugated tube, and corrugated tube end fixing device - Google Patents

Description

The present invention relates to a corrugated tube device, a corrugated tube terminal member, and a corrugated tube end fixing device that allow a plurality of corrugated tubes to be arranged close to each other.

Conventionally, a bell mouth attached to the end of a pipe has been embedded in the concrete that forms the peripheral wall of the handhole (see, for example, Patent Document 1). As shown in FIG. 22, the bell mouth 22 inserted into the end of the pipe 21 consisted of a cylindrical portion 23 and a flange portion 24, and the flange portion 24 was provided with nailing holes 24a. Therefore, when forming the handhole, panels (inner panel 26 and outer panel 27) that serve as forms are erected inside and outside the concrete placing space 25 for forming the peripheral wall of the handhole. The bellmouth 22 was attached by nailing (ie, by nails 28 driven into the inner panel 26 through nailing holes 24a in the flange portion 24).

Utility Model Registration No. 3054542

However, since the flange portion 24 of the conventional bell mouth 22 (terminal member) protrudes more than the pipe 21 (corrugated pipe), the plurality of pipes 21, 21 should be brought close to each other. As a result, the bell mouths 22, 22 would interfere with each other, and the plurality of tubes 21, 21 could not be brought close to each other.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described drawbacks of the conventional art, and an object of the present invention is to provide a corrugated tube device and a corrugated tube device capable of arranging a plurality of corrugated tubes close to each other. To provide a terminal member for a pipe and a corrugated pipe end fixing device.

A corrugated tube device, a corrugated tube terminal member, and a corrugated tube end fixing device according to the present invention are configured as follows in order to achieve the above object. i.e.
A corrugated tube device according to the first aspect of the invention comprises a corrugated tube having continuous unevenness on the inner and outer surfaces, and terminal members attached to the ends of the corrugated tube. Here, the terminal member includes a cylindrical insertion portion inserted into the corrugated pipe, and a flange portion projecting from the end portion of the corrugated pipe with a mouth widening from the insertion portion. Prepare. The insertion portion has an engaging portion that enters into the inner concave portion of the corrugated tube and engages with the inner convex portion of the corrugated tube. When a plurality of the corrugated pipe devices are arranged in a direction orthogonal to the axial direction of the corrugated pipe, the flange portions allow the corrugated pipes to come into contact with each other without interference between the flange portions. sized to be possible. Further, the flange portion is formed with a through portion through which a fastener such as a screw or bolt passes, at a position farther from the axial center of the corrugated pipe than the bottom surface of the outer surface recess of the corrugated pipe.

According to this corrugated tube device, the terminal member has a tubular insertion portion and a flange portion, the insertion portion is inserted into the corrugated pipe, and the flange portion protrudes from the end portion of the corrugated pipe. The terminal member is attached to the end of the corrugated tube by hooking the hook provided on the insertion section to the inner convex portion of the corrugated tube. Here, when a plurality of corrugated pipe devices are arranged in a direction orthogonal to the axial direction of the corrugated pipe, the flange portions allow the corrugated pipes to come into contact with each other without interference between the flange portions. Because of the size, when arranging a plurality of corrugated tube devices in a direction orthogonal to the axial direction of the corrugated tube, the plurality of corrugated tubes can be arranged close to each other. A through portion is formed in the flange portion, and the end member and, by extension, the corrugated pipe device can be fixed to the formwork plate by means of a fastener that passes through the through portion.

The corrugated tube device according to the invention of claim 2 is the corrugated tube device of claim 1, wherein the top surface of the convex portion on the outer surface and the bottom surface of the concave portion on the inner surface of the corrugated pipe are corrugated. The corrugated tube is formed so as to have a quadrangular shape in a cross section perpendicular to the axis of the corrugated tube, and the bottom surface of the outer concave portion and the top surface of the inner convex portion form a quadrangular shape in a cross section perpendicular to the axis of the corrugated tube. is formed as

According to a third aspect of the present invention, there is provided a corrugated tube device according to the second aspect, wherein the peripheral wall of the insertion portion is the top surface of the inner convex portion of the corrugated tube. The flange portion is formed so as to form a square tubular shape along a square cross-section, and the flange portion is formed so that the peripheral edge thereof forms a square shape along the square cross-section of the top surface of the outer convex portion of the corrugated tube. It is And the said through part is provided in the position of at least 1 corner|angular part among the four corner|angular parts in the circumferential direction of the said flange part.

A corrugated tube device according to the invention of claim 4 is the corrugated tube device of claim 1, wherein the top surface of the convex portion on the outer surface and the bottom surface of the concave portion on the inner surface of the corrugated pipe are corrugated. The corrugated tube is formed so as to have a square shape in a cross section perpendicular to the axis of the corrugated tube, and the bottom surface of the outer concave portion and the top surface of the inner convex portion form a circular shape in a cross section perpendicular to the axis of the corrugated tube. is formed as

According to a fifth aspect of the present invention, there is provided a corrugated tube device according to the second or third aspect, wherein the corrugated tube has the bottom surface of the outer concave portion and the top surface of the inner convex portion. In the circumferential direction of the top surface of the inner surface convex portion at the end edge portion of the corrugated tube when the terminal member is attached to the end portion side of which the position is the end edge in the axial direction, A contact rib that contacts the corner inner surface of the corrugated tube is provided at a specific portion of the insertion portion that faces at least one of the four corner inner surfaces. By providing the contact rib, it is possible to prevent the corrugated tube from rattling with respect to the terminal member.

A corrugated pipe device according to the invention of claim 6 is the corrugated pipe device of any one of claims 1 to 5, wherein the corrugated pipe between the rear surface of the flange portion and the corrugated pipe a receiving portion-forming protrusion capable of coming into contact with the end surface of the corrugated tube is formed on the back surface of the flange portion so as to secure a receiving portion for receiving the portion of the fixing tool protruding from the back surface of the flange portion. It is

A corrugated tube device according to the invention of claim 7 is the corrugated tube device of any one of claims 1 to 6, wherein the length of the hooking portion in the axial direction corresponds to It is formed shorter than the length in the axial direction of the inner surface concave portion of the corrugated tube. As a result, relative movement of the terminal member and the corrugated tube in the axial direction is permitted within a certain range, and the axial position of the corrugated tube with respect to the terminal member can be adjusted within that range.

A terminal member for a corrugated tube according to the eighth aspect of the invention is attached to an end portion of a corrugated tube having continuous irregularities on the inner and outer surfaces. The terminal member includes a cylindrical insertion portion that is inserted into the corrugated pipe, and a flange that protrudes from the end of the corrugated pipe with a wide mouth extending from the insertion portion. The insertion portion has an engaging portion that enters into the inner concave portion of the corrugated tube and engages with the inner convex portion of the corrugated tube. When a plurality of corrugated pipes with terminal members to which the terminal members are attached are arranged in a direction perpendicular to the axial direction of the corrugated pipes, the flanges do not interfere with each other. It is formed in a size that allows the corrugated tubes to come into contact with each other. Further, the flange portion is formed with a through portion at a position outside the outer surface of the insertion portion through which fasteners such as screws and bolts pass.

According to this terminal member, the terminal member includes a tubular insertion portion and a flange portion, the insertion portion is inserted into the corrugated pipe, and the flange portion protrudes from the end portion of the corrugated pipe. The terminal member is attached to the end of the corrugated tube by hooking the hook provided on the insertion section to the inner convex portion of the corrugated tube. Here, when a plurality of corrugated pipes with terminal members are arranged in a direction orthogonal to the axial direction of the corrugated pipes, the flanges can contact each other without the flanges interfering with each other. Since the corrugated tubes are formed to a size that allows, when arranging a plurality of corrugated tubes with end members in a direction orthogonal to the axial direction of the corrugated tubes, the plurality of corrugated tubes can be arranged close to each other. can do. A through portion is formed in the flange portion, and the end member, and thus the corrugated pipe with the end member, can be fixed to the formwork plate by means of a fastener that passes through the through portion.

A corrugated pipe end fixing device according to the invention of claim 9 comprises the terminal member of claim 8 and a fixing plate. Here, the fixing plate includes a fixing portion fixed to the flange portion by the fixture passed through the through portion, a closing portion closing an opening inside the flange portion, and the terminal member embedded therein. It has a female threaded portion into which a male threaded member such as a bolt passing through a formwork plate for a hardening material such as concrete is screwed. Since the fixed plate has a fixed portion fixed to the flange portion of the terminal member and a female threaded portion into which a male threaded member such as a bolt passing through the formwork plate is screwed, the terminal member, and thus the corrugation with the terminal member The pipe can be fixed to the formwork plate via this fixing plate. The fixed plate has a closing portion that closes the opening inside the flange portion. For this reason, after the terminal member is embedded in a hardening material such as concrete and the formwork plate is removed, the fixed plate having the closed portion prevents dust from entering the terminal member and, by extension, the corrugated pipe with the terminal member. etc. can be prevented from entering.

According to the corrugated pipe device, the terminal member, and the corrugated pipe end fixing device according to the present invention, the flange portion includes a plurality of corrugated pipe devices (corrugated pipes with terminal members) arranged in the axial direction of the corrugated pipe. When arranged in a direction perpendicular to the A plurality of corrugated tubes can be arranged close to each other when arranged in a direction perpendicular to the axial direction of the corrugated tubes. A through portion is formed in the flange portion, and the terminal member and, in turn, the corrugated pipe device (corrugated pipe with the terminal member) are fixed to the formwork plate by means of a fixture that passes through the through portion. It is possible to arrange and fix a plurality of corrugated tubes close to each other.

1 is a perspective view of a corrugated tube in one embodiment of the invention; FIG. Similarly, it is a sectional view of a corrugated tube. Similarly, it is the perspective view which looked at the terminal member from the front. Similarly, it is the perspective view which looked at the terminal member from the back. Similarly, it is sectional drawing of a terminal member. Similarly, it is an enlarged cross-sectional view showing the through portion of the terminal member. Similarly, it is a perspective view of a corrugated tube device. Similarly, it is sectional drawing of a corrugated tube apparatus. Similarly, it is a perspective view in which a plurality of corrugated tube devices are arranged in a vertical direction, which is an example of a direction perpendicular to the axial direction of the corrugated tube. Similarly, it is a cross-sectional view in which a plurality of corrugated tube devices are arranged in a vertical direction, which is an example of a direction perpendicular to the axial direction of the corrugated tube. Similarly, it is a front view of a fixed plate. FIG. 12 is a cross-sectional view taken along line AA in FIG. 11; Similarly, it is sectional drawing which assembled|attached a corrugated tube edge part fixing device and a corrugated tube. Similarly, it is an enlarged cross-sectional view showing the fixing portion where the fixing plate is fixed to the flange portion. Similarly, the state in which the corrugated tube with terminal members is fixed to the form plate via the fixing plate (that is, the state in which the corrugated pipe is fixed to the form plate using the corrugated pipe end fixing device) It is a sectional view showing. Similarly, it is sectional drawing which shows the construction process which connects a corrugated pipe to the wall of a structure using a corrugated pipe end fixing device. FIG. 10 is a perspective view of a corrugated tube according to another embodiment of the invention; Similarly, it is the perspective view which looked at the terminal member from the front. Similarly, it is the perspective view which looked at the terminal member from the back. Similarly, it is an enlarged cross-sectional view showing the through portion of the terminal member. Similarly, it is sectional drawing of a corrugated tube apparatus. FIG. 10 is a cross-sectional view showing a process of embedding a conventional bell mouth in concrete;

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the corrugated tube apparatus, terminal member, and corrugated tube end fixing apparatus which concern on this invention is demonstrated based on drawing.

1-16 illustrate one embodiment of the present invention. Reference numeral 1 in the figure denotes a corrugated tube having continuous irregularities on the inner and outer surfaces. 2 indicates a terminal member for the corrugated tube. 3 indicates a corrugated tube device. 4 indicates a corrugated tube end fixing device.

The corrugated tube device 3 comprises a corrugated tube 1 and a terminal member 2 attached to the end of the corrugated tube 1 . The terminal member 2 includes a cylindrical insertion portion 2a to be inserted into the corrugated pipe 1 and a flange portion 2b projecting from the end of the corrugated pipe 1 with a wide mouth extending forward from the insertion portion 2a. and

Here, the insertion portion 2a has an engaging portion 2c that enters the inner concave portion 1a of the corrugated tube 1 and engages with the inner convex portion 1b of the corrugated tube 1. As shown in FIG. The length of the engaging portion 2c in the axial direction P of the corrugated tube 1 (that is, the axial direction of the insertion portion 2a) corresponds to the length of the corresponding inner surface recess 1a of the corrugated tube 1 in the axial direction P. It is formed shorter than the length.

When a plurality of corrugated pipe devices 3 (that is, corrugated pipes 1 with terminal members 2 attached with terminal members 2) are arranged in a direction perpendicular to the axial direction P of the corrugated pipe 1, the flange portion 2b , the flange portions 2b, 2b are formed to a size that allows the corrugated pipes 1, 1 to come into contact with each other without interference. The flange portion 2b is provided at a position outside the outer surface of the insertion portion 2a (more specifically, at a position farther from the axial center of the corrugated pipe 1 than the bottom surface of the outer surface recess 1c of the corrugated pipe 1). , through-holes 2d through which fasteners 5 such as screws and bolts pass are formed.

Further, between the back surface of the flange portion 2b (that is, the surface facing the insertion portion 2a side) and the corrugated tube 1, a receiving portion 2e for receiving the portion of the fixture 5 projecting from the back surface of the flange portion 2b is secured. Further, a receiving portion-forming protrusion 2f that can come into contact with the end surface of the corrugated tube 1 is formed on the rear surface of the flange portion 2b. Here, being able to abut is not limited to the case where the receiving portion-forming protrusion 2f is actually in contact with the end face of the corrugated tube 1 when the terminal member 2 is attached to the end of the corrugated tube 1. , and the case where the end member 2 is not in contact with the corrugated tube 1, but can be contacted by inserting the insertion portion 2a of the terminal member 2 into the corrugated tube 1 (see FIG. 8).

Specifically, the corrugated tube 1 is formed so that the top surface of the outer convex portion 1d and the bottom surface of the inner concave portion 1a of the corrugated pipe 1 form a square shape in a cross section perpendicular to the axial center of the corrugated pipe 1. Further, the bottom surface of the outer concave portion 1c and the top surface of the inner convex portion 1b of the corrugated tube 1 are formed so as to form a quadrangular shape in a cross section perpendicular to the axial center of the corrugated tube 1. In the terminal member 2, the peripheral wall 2j of the insertion portion 2a is formed in a square tubular shape along the square cross-sectional shape of the top surface of the inner convex portion 1b of the corrugated tube 1, and the flange portion 2b is The peripheral edge is formed so as to form a square shape along the cross-sectional square shape of the top surface of the outer convex portion 1 d of the corrugated tube 1 . Therefore, the through portion 2d is provided at the position of at least one of the four corners in the circumferential direction of the flange portion 2b.

Then, the corrugated tube 1 is provided with a terminal member 2 on its end side where the positions of the bottom surface of the outer concave portion 1c and the top surface of the inner convex portion 1b of the corrugated pipe 1 are the end edges in the axial direction P. is attached (see FIG. 8), at least one of the four corner inner surfaces in the circumferential direction of the top surface of the inner convex portion 1b at the edge portion of the corrugated tube 1 x At least one of the four corner outer surfaces in the circumferential direction of the insertion portion 2a (specifically, the outer surface of the insertion portion 2a in the circumferential direction) facing (in the illustrated embodiment, the four corner inner surfaces) Abutment ribs 2g are provided on the outer surface (the four corner outer surfaces in the illustrated embodiment) to abut against the corner inner surface 1x of the corrugated tube 1 (see FIG. 14).

Specifically, the corrugated tube 1 is for containing and protecting wiring and piping materials (wiring materials or piping materials), for example, and is made of synthetic resin or the like. The corrugated tube 1 has a quadrangular shape (specifically, a rectangular shape such as a square) in a cross section perpendicular to the axial center of the corrugated tube 1. In the illustrated embodiment, the corrugated tube 1 is formed to have a rounded square shape with arcs at the corners, and the bottom surface of the outer concave portion 1c and the top surface of the inner convex portion 1b of the corrugated tube 1 are corrugated. The tube 1 is formed to have a quadrangular shape (specifically, a rectangular shape such as a square, in the illustrated embodiment, a rounded square shape having arcs at the corners) in a cross section perpendicular to the axial center of the tube 1 . On the top surface of the outer convex portion 1d of the corrugated tube 1, a concave portion 1e is provided at the center of two opposing sides of the square cross section. The bottom surface of the inner concave portion 1a of the tube 1 is provided with a convex portion 1f.

The terminal member 2 is made of synthetic resin or the like, for example. In this terminal member 2, the peripheral wall 2j of the insertion portion 2a has a square cross-sectional shape (specifically, a rectangular shape such as a square cross-section, and in the illustrated embodiment, a square shape) of the top surface of the inner convex portion 1b of the corrugated tube 1. Formed so as to form a square tubular shape (more specifically, a rectangular tubular shape such as a square, in the illustrated embodiment, a rounded square tubular shape having arcs at the corners) be done. On the other hand, the flange portion 2b has a peripheral edge that has a rectangular cross-sectional shape (specifically, a rectangular shape such as a square cross-section) of the top surface of the outer surface convex portion 1d of the corrugated tube 1. It is formed so as to form a quadrangular shape (specifically, a rectangular shape such as a square, in the illustrated embodiment, a rounded square shape having arcs at the corners) along a rounded square shape. The flange portion 2b is composed of a curved surface portion 2h extending in an arc from the insertion portion 2a and a flat plate portion 2i extending from the curved surface portion 2h at right angles to the insertion portion 2a.

The hooking portion 2c is formed to protrude outward from the peripheral wall 2j of the insertion portion 2a. More specifically, the hook portion 2c has a surface on the side of the flange portion 2b that forms an upright surface 2k that stands upright from the peripheral wall 2j, and a surface on the opposite side of the flange portion 2b that is closer to the side opposite the flange portion 2b than the peripheral wall 2j. , the slope is 2 m. More specifically, the peripheral wall 2j of the insertion portion 2a has an elastic piece 2n that can be elastically deformed inside and outside the insertion portion 2a with the base end opposite to the flange portion 2b. is provided with the hook portion 2c. In the illustrated embodiment, a U-shaped slot 2p is formed in the peripheral wall 2j, and the inner portion surrounded by the slot 2p serves as the elastic piece 2n.

The through portions 2d are provided at four corners in the circumferential direction of the flange portion 2b. The through portion 2d is formed of a bottomed hole opened from the front side of the flange portion 2b. The fixture 5 is a screw (specifically, a tapping screw), and is screwed into the through portion 2d from the front side of the flange portion 2b (that is, the side opposite to the side where the insertion portion 2a is provided).

The receiving portion-forming projections 2f are provided on the rear surface of the flange portion 2b as described above. It is provided at the position of the portion, that is, at the position where the through portion 2d is located. The receiving portion-forming protrusion 2f is formed so as to protrude from the rear surface of the flange portion 2b and extend from the peripheral edge of the flange portion 2b to the insertion portion 2a. Two kinds of receiving portion forming protrusions 2f, a first receiving portion forming protrusion 201 and a second receiving portion forming protrusion 202, are provided so that they are arranged alternately in the circumferential direction of the flange portion 2b. placed. The first receiving portion-forming projection 201 is formed in a rectangular shape having a recess opening on the peripheral edge side of the flange portion 2b, and the inside of the recess serves as a receiving space as the receiving portion 2e. The second receiving portion-forming protrusion 202 is formed in a rectangular shape without a concave portion, and itself serves as the receiving portion 2e.

The contact rib 2g is formed so as to protrude from the peripheral wall 2j on the base end side (flange portion 2b side) of the insertion portion 2a. More specifically, the contact rib 2g extends from the receiving portion-forming projection 2f toward the distal end of the insertion portion 2a, and is formed in a wedge shape whose height decreases toward the distal end.

A corrugated tube end fixing device 4 comprises the terminal member 2 and a fixing plate 6 . The fixing plate 6 includes a fixing portion 6a fixed to the flange portion 2b (and thus the terminal member 2) by means of a fixture 5 passed through a through portion 2d provided in the flange portion 2b of the terminal member 2, and a fixing portion 6a fixed to the flange portion 2b. and a female threaded portion 6c into which a male threaded member 8 such as a bolt passing through a formwork plate 7 for hardening material such as concrete in which the terminal member 2 is embedded is screwed.

Specifically, the fixing plate 6 is composed of a fixing plate main body 6d formed in a square flat plate shape, and a nut 6e having the female screw portion 6c. Of the four corners of the fixing plate 6 (specifically, the fixing plate main body 6d), the fixing portions 6a are provided at two diagonal corners. A through hole 6f through which a screw (specifically, a tapping screw) as a fixture 5 passes is provided. Almost the entire portion of the fixing plate main body 6d except for the peripheral portion serves as the closing portion 6b. The nut 6e is fixed by welding, for example, to the back surface of the fixing plate body 6d (that is, the surface on the side where the terminal member 2 is located). The nut 6e is provided in the center of the fixing plate main body 6d, and the fixing plate main body 6d is provided with a hole 6g so as to communicate with the female screw portion 6c.

The form plate 7 has a through hole 7a. Therefore, the corrugated plate end fixing device 4 having the fixing plate 6 attached to the terminal member 2 is attached to the fixing plate 6 with the formwork plate 7, and the male screw member 8 such as a bolt is attached to the formwork plate 7. and the hole 6g of the fixing plate body 6d, and screwed into the nut 6e (female screw portion 6c). Then, the terminal member 2 and the corrugated tube 1 are assembled by inserting the insertion portion 2a of the terminal member 2 into the end of the corrugated tube 1. It may be after the fixing plate 6 is attached to the terminal member 2, or after the fixing plate 6 (specifically, the fixing plate 6 with the terminal member 2 attached) is attached to the formwork plate 7. .

9 and 10 show a state in which a plurality of corrugated tube devices 3 are arranged in a vertical direction, which is an example of a direction orthogonal to the axial direction P of the corrugated tube 1. FIG. In this example, each of the corrugated tube devices 3 is fitted with a fixing plate 6 , which are attached to the form plate 7 . Moreover, FIG. 16 shows the construction process of connecting the corrugated pipe 1 to the wall 9 of a structure such as a handhole using the corrugated pipe end fixing device 4 . In the illustrated embodiment, the wall 9 is pre-drilled with a hole 9a, and a plurality of corrugated pipes 1, 1 are connected to the hole 9a. Here, the formwork plate 7 is placed on the fixing plates 6, 6 so as to extend over the fixing plates 6, 6, and is arranged so as to close the hole 9a from the inside of the wall 9. As shown in FIG. Then, the gap 10 between the inner peripheral surface of the hole 9a and the corrugated pipe device 3 (the terminal member 2 and the corrugated pipe 1) is filled with a hardening material (not shown) such as concrete, mortar, or resin concrete. . After the hardening material hardens, the form plate 7 is removed by removing the bolts 8 . After that, when a cable or the like is arranged in the corrugated tube 1, the fixing plate 6 is removed by removing the fixture 5. - 特許庁

Next, the effects of the corrugated tube device 3, the terminal member 2, and the corrugated tube end fixing device 4 configured as described above will be described. The terminal member 2 in the corrugated tube device 3 or the corrugated tube end fixing device 4 has a cylindrical insertion portion 2a and a flange portion 2b, and the insertion portion 2a is inserted into the corrugated tube 1, A flange portion 2b protrudes from the end portion of the corrugated pipe 1 . The terminal member 2 is attached to the end portion of the corrugated tube 1 by hooking the hooking portion 2c provided on the insertion portion 2a to the inner convex portion 1b of the corrugated tube 1 . Here, when a plurality of corrugated pipe devices 3 (that is, corrugated pipes 1 with terminal members 2) are arranged in a direction orthogonal to the axial direction P of the corrugated pipes 1, the flange portion 2b The corrugated pipes 1 are formed in a size that allows the corrugated tubes 1 to come into contact with each other without the 2b interfering with each other. Therefore, when arranging the plurality of corrugated tube devices 3, 3 in the direction orthogonal to the axial direction P of the corrugated tube 1, the plurality of corrugated tubes 1, 1 can be arranged close to each other. A through portion 2d is formed in the flange portion 2b, and the terminal member 2 and, in turn, the corrugated pipe device 3 are attached to the formwork plate 7 by a fixture 5 passing through the through portion 2d (in the illustrated embodiment). ) can be fixed to the formwork plate 7 via the fixing plate 6, and the plurality of corrugated pipes 1, 1 can be arranged and fixed in close proximity to each other.

In addition, the fixed plate 6 has a closing portion 6b that closes the inner opening of the flange portion 2b. Therefore, after the terminal member 2 is embedded in a hardening material such as concrete and the formwork plate 7 is removed, the fixed plate 6 having the closed portion 6b can be used to secure the inside of the terminal member 2 and the corrugated pipe device. It is possible to prevent dust and the like from entering inside 3 (that is, inside corrugated tube 1 with terminal member 2).

Further, the insertion portion 2a of the terminal member 2 is provided with a contact rib 2g. By providing the contact rib 2g, it is possible to prevent the corrugated tube 1 from rattling with respect to the terminal member 2. FIG. In particular, since the contact rib 2g is located at a corner portion of the peripheral wall 2j of the insertion portion 2a that faces the inner surface of the corner portion of the corrugated tube 1 and is difficult to deform, Rotation can be appropriately suppressed, and rattling of the corrugated tube 1 with respect to the terminal member 2 can be effectively prevented.

In addition, the length of the hooking portion 2c in the axial direction P of the corrugated tube 1 is formed shorter than the length of the corresponding inner surface concave portion 1a of the corrugated tube 1 in the axial direction P. As a result, relative movement in the axial direction P between the terminal member 2 and the corrugated tube 1 is permitted within a certain range, and the position of the corrugated tube 1 relative to the terminal member 2 in the axial direction P is adjusted within that range. can do.

It should be noted that the present invention is not limited to the above-described embodiments, and various other modifications are possible. For example, even if both the outer surface convex portion 1d and the outer surface concave portion 1c of the corrugated tube 1 do not have a square shape, the corrugated pipe 1 may have the top shape of the outer surface convex portion 1d as shown in FIGS. The surface and the bottom surface of the inner concave portion 1a have a quadrangular shape (specifically, a rectangular shape such as a square, in the illustrated embodiment, a rounded square shape having arcs at the corners) in a cross section perpendicular to the axis of the corrugated tube 1. , and the bottom surface of the outer concave portion 1c and the top surface of the inner convex portion 1b may be formed so as to form a circular shape in a cross section perpendicular to the axial center of the corrugated tube 1. In the terminal member 2 attached to the corrugated tube 1, the peripheral wall 2j of the insertion portion 2a has a circular cylindrical shape along the circular cross-sectional shape of the top surface of the inner convex portion 1b of the corrugated tube 1. is formed to form The peripheral edge of the flange portion 2b has a rectangular cross-sectional shape (specifically, a rectangular shape such as a square cross-section) of the top surface of the outer surface convex portion 1d of the corrugated tube 1. It is formed so as to form a quadrangular shape (specifically, a rectangular shape such as a square, in the illustrated embodiment, a rounded square shape having arcs at the corners) along a rounded square shape. Further, in this terminal member 2, the groove-like hole 2p and the elastic piece 2n are not provided. Further, the terminal member 2 is not provided with a contact rib that contacts the inner surface of the corrugated tube 1 at a location facing the inner surface convex portion 1b of the corrugated tube 1. , press-contact ribs for press-contacting the inner surface of the corrugated tube 1 may be provided. In this way, when the top surface of the inner convex portion 1b of the corrugated tube 1 has a circular cross-sectional shape, if the terminal member 2 is provided with a contact rib (pressure contact rib), the inner surface of the corrugated tube 1 and the contact rib (pressure contact rib) are formed. Relative rotation between the corrugated tube 1 and the terminal member 2 is suppressed by friction with the rib. In place of the abutment ribs, fixing members 5 are provided so as to abut against the inner surface of the corrugated tube 1 (especially, the inner surface of the corrugated tube 1 is pressed against the corrugated tube 1 and the terminal member 2). You may make it suppress the relative rotation with.

Further, the terminal member 2 and the corrugated tube device 3 may be directly fixed to the form plate 7 without being fixed to the form plate 7 via the fixing plate 6 . That is, without using the fixing plate 6, the terminal member 2 is directly fixed from the terminal member 2 side or the formwork plate 7 side by the fixture 5 that passes through the through portion 2d of the terminal member 2 and the formwork plate 7. It may be fixed to the form plate 7 .

When arranging a plurality of corrugated tube devices 3 in a direction perpendicular to the axial direction P of the corrugated tube 1, the direction perpendicular to the axial direction P is not limited to the vertical direction, but may be the horizontal direction or any other vertical direction. and the horizontal direction.

Further, when connecting the corrugated pipe 1 to the wall 9 of a structure such as a handhole, the wall 9 is pre-drilled with holes 9a. The corrugated tube device 3 (that is, the terminal member 2 or the corrugated tube 1) may be directly embedded in the hardening material.

Further, even if both the terminal member 2 and the corrugated tube 1 are not embedded with hardening material, only the terminal member 2 can be removed by lengthening the terminal member 2 and attaching the corrugated tube 1 to the tip portion thereof. It may be buried.

Alternatively, the terminal member 2 may be attached to the end of the corrugated tube 1 without embedding the terminal member 2 and the corrugated tube 1 with a hardening material. Even in this case, especially by providing the abutment rib 2g at the corner of the peripheral wall 2j of the insertion portion 2a that faces the inner surface of the corner of the corrugated tube 1 and is difficult to deform, the corrugated tube 1 and the terminal member 2 can be accurately suppressed, and rattling between the corrugated tube 1 and the terminal member 2 can be effectively prevented.

Further, the positions of the through portion 2d or the receiving portion 2e and the position of the receiving portion forming projection 2f may not be the same, but may be shifted from each other. That is, for example, in FIG. 4, the receiving portion 2e may be located at an intermediate position between the adjacent receiving portion forming projections 2f, 2f.

Also, the through portion 2d may be a through hole instead of a bottomed hole, and a shallow depression or the like may serve as a mark indicating the through portion 2d.

Further, the fixture 5 may be passed through the through portion 2d from the rear side of the flange portion 2b without being passed through the through portion 2d from the front side of the flange portion 2b. Further, this fixture 5 may be made up of a bolt and a nut instead of a screw. may be screwed. At this time, the receiving portion-forming protrusion 2f is composed of a first receiving portion-forming protrusion 201 having a recess, and the recess serves as a receiving space as the receiving portion 2e for receiving the head of the bolt or the nut. In this case, the receiving portion forming protrusion 2f (more specifically, the first receiving portion forming protrusion 201) is engaged with the head of the bolt or the peripheral surface of the nut so as to prevent the bolt or nut from rotating. It should be formed so that

In the case of the square flange portion 2b, the position of the through portion 2d is the outside of the inscribed circle that inscribes the square. It is preferably outside the inscribed inscribed circle.

Also, the contact rib 2g and the receiving portion-forming projection 2f may be omitted if they are not necessary.

Further, the fixtures 5 are not limited to screws or bolts, and may be nails or the like.

Further, in the fixed plate 6, the female threaded portion 6c is formed by a hole of the nut 6e, but the female threaded portion 6c may be provided directly on the fixed plate main body 6d without using the nut 6e.

Reference Signs List 1 Corrugated tube 1a Inner concave portion 1b Inner convex portion 1c Outer concave portion 1d Outer convex portion 1x Corner inner surface 2 Terminal member 2a Insertion portion 2b Flange portion 2c Hooking portion 2d Through portion 2e Receiving portion 2f Receiving portion forming protrusion 2j Peripheral wall 2g Contact rib 201 First receiving portion forming projection (receiving portion forming projection)
202 Second receiving portion forming protrusion (receiving portion forming protrusion 3 corrugated pipe device 4 corrugated pipe end fixing device 5 fixture 6 fixing plate 6a fixing portion 6b closing portion 6c female thread portion 7 form plate 8 male thread member P axial direction

Claims (9)

A corrugated tube device comprising a corrugated tube having continuous unevenness on the inner and outer surfaces and a terminal member attached to an end of the corrugated tube,
The terminal member includes a cylindrical insertion portion that is inserted into the corrugated pipe, and a flange that protrudes from the end of the corrugated pipe with a mouth that widens from the insertion portion,
The insertion portion has a hooking portion that enters the concave portion on the inner surface of the corrugated tube and hooks on the convex portion on the inner surface of the corrugated tube,
When a plurality of the corrugated pipe devices are arranged in a direction orthogonal to the axial direction of the corrugated pipe, the flange portions allow the corrugated pipes to come into contact with each other without interference between the flange portions. and
A corrugated pipe device, wherein the flange portion is formed at a position farther from the axial center of the corrugated pipe than the bottom surface of the outer surface recess of the corrugated pipe, and a through portion through which a fastener such as a screw or bolt passes. . The corrugated tube is formed so that the top surface of the convex portion on the outer surface and the bottom surface of the concave portion on the inner surface form a square in a cross section perpendicular to the axis of the corrugated tube, and the bottom surface of the concave surface on the outer surface and the bottom surface on the inner surface are convex. 2. The corrugated tube device according to claim 1, wherein the top surface of the portion is formed so as to form a quadrangular cross-section perpendicular to the axial center of the corrugated tube. The peripheral wall of the insertion portion is formed in a square tubular shape along the cross-sectional square shape of the top surface of the inner convex portion of the corrugated tube,
The flange portion is formed so that its peripheral edge forms a square shape along the cross-sectional square shape of the top surface of the outer surface convex portion of the corrugated tube,
The corrugated pipe device according to claim 2, wherein the through portion is provided at a position of at least one of four corners in the circumferential direction of the flange portion. The corrugated tube is formed so that the top surface of the convex portion on the outer surface and the bottom surface of the concave portion on the inner surface form a square in a cross section perpendicular to the axis of the corrugated tube, and the bottom surface of the concave surface on the outer surface and the bottom surface on the inner surface are convex. 2. The corrugated tube device according to claim 1, wherein the top surface of the portion is formed to have a circular shape in a cross section perpendicular to the axial center of the corrugated tube. When the terminal member is attached to the end portion of the corrugated tube where the positions of the bottom surface of the outer concave portion and the top surface of the inner convex portion are the axial end edges, the corrugated pipe is At a specific location of the insertion portion facing at least one corner inner surface of the four corner inner surfaces in the circumferential direction of the top surface of the inner convex portion at the end edge portion of the tube, the corrugated tube 4. The corrugated pipe device according to claim 2 or 3, further comprising an abutting rib that abuts against the inner surface of the corner. The corrugated pipe is provided on the back surface of the flange portion so as to secure a receiving portion between the back surface of the flange portion and the corrugated pipe to receive the portion of the fixture protruding from the back surface of the flange portion. The corrugated tube device according to any one of claims 1 to 5, wherein a receiving portion-forming projection capable of coming into contact with the end surface is protruded. 7. The length in the axial direction of the hooking portion is formed shorter than the length in the axial direction of the corresponding inner surface concave portion of the corrugated tube. Corrugated tube device. A terminal member attached to the end of a corrugated tube having continuous unevenness on the inner and outer surfaces,
A cylindrical insertion part inserted into the corrugated tube, and a flange part projecting from the end of the corrugated tube with a mouth widening from the insertion part toward the tip,
The insertion portion has a hooking portion that enters the concave portion on the inner surface of the corrugated tube and hooks on the convex portion on the inner surface of the corrugated tube,
When a plurality of corrugated pipes with terminal members to which the terminal members are attached are arranged in a direction orthogonal to the axial direction of the corrugated pipes, the flanges are configured to allow the corrugated pipes to be formed without the flanges interfering with each other. It is formed in a size that allows the attachment tubes to come into contact with each other, and
A terminal member for a corrugated pipe, wherein the flange portion is formed at a position outside the outer surface of the insertion portion with a through portion through which a fastener such as a screw or bolt passes. A corrugated tube end fixing device comprising the terminal member according to claim 8 and a fixing plate,
The fixing plate includes a fixing portion fixed to the flange portion by the fixture passed through the through portion, a closing portion closing an opening inside the flange portion, and concrete or the like embedding the terminal member. A corrugated pipe end fixing device having a female threaded portion into which a male threaded member such as a bolt passing through a hardening material form plate is screwed.

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