JP2009213281A - Pipe member, separator, and conduit structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe member can prevent omission of a separator. <P>SOLUTION: The pipe member 1 is arranged with a separator 2 equipped with a pair of mating ridges 12, 12 on the inner surface 11 in the direction of a pipe shaft. The separator 2 includes a body section 21 separating the pipe member 1, a pair of support leg sections 22, 22 provided at both ends of the body section 21 along the inner surface 11 of the pipe member 1, and mating grooves 23, 23 provided to the support leg sections 22, 22 and slidably mated with the mating ridges 12, 12. Furthermore, the inner surface 11 of the pipe member 1 is provided with locking sections 15, 15 at a position corresponding to the chip end positions 22a, 22a of the support leg sections 22, 22. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a pipe member, a separator that divides the cross section of the pipe member, and a pipe structure in which the cross section of the pipe member is divided by the separator.

  Conventionally, a communication cable such as a telephone line is constituted by a trunk cable connecting telephone stations and a lead-in cable branched from the trunk cable and drawn into a house or a store.

  And these trunk cables and lead-in cables are often buried under the road surface in consideration of the scenery.

  In this case, a plurality of trunk cables are accommodated in a single protective tube, and a plurality of lead-in cables are accommodated in a single protective tube, so that all cables can be saved in space rather than being accommodated in separate protective tubes. Can do.

  Therefore, it is possible to embed a cable under a narrow road such as a residential area or a shopping street.

  On the other hand, when underground communication cables become widespread and it becomes necessary to embed cables under a narrower road, it is necessary to further save space than the above-described configuration.

  Therefore, for example, Patent Document 1 discloses that a trunk cable and a lead-in cable are separated and accommodated by disposing a separator along the tube axis direction inside the tube member.

And the rotation of a separator is prevented by fitting the fitting groove provided in the support leg part of a separator with the fitting convex provided in the inner surface of a pipe member.
JP 2007-74885 A

  However, in Patent Document 1, since only the fitting groove is fitted into the fitting protrusion, when the fitting allowance is small or the rigidity of the separator is weak, the weight of the drawing cable or the cable drawing Due to the resistance, the separator may be bent and fall off.

  Therefore, an object of the present invention is to provide a pipe member that can prevent the separator from falling off, a separator, and a pipe structure including the pipe member and the separator.

  In order to achieve the above object, the pipe member of the present invention includes a pair of fitting ridges along the pipe axis direction on the inner surface, and is provided at both ends of the main body part and the main body part that divide the cross section. A pipe member provided with a separator having a pair of support legs along the inner surface of the member and a fitting groove provided on the support leg and slidably fitted to the fitting protrusion, A pair of latching portions are provided on the inner surface of the pipe member at positions corresponding to the tip positions of the pair of support leg portions.

  Moreover, the said latching part can be set as the structure formed as a protruding item | line or a level | step difference which continues in a pipe-axis direction.

  Furthermore, it is preferable that a pair of the hooks are provided at symmetrical positions on both sides of the fitting protrusion.

  And the pipe line structure of this invention is characterized by the said separator being installed in one of the above-mentioned pipe members, and the cross section of a pipe member being divided | segmented.

  Further, the separator of the present invention is installed in a pipe member provided with a pair of fitting ridges along the pipe axis direction on the inner surface, and is provided at both ends of the main body part and a main body part that divides the cross section. A separator provided with a pair of support legs along an inner surface and a fitting groove provided on the support leg and slidably fitted on the fitting protrusion, Reinforcing members that match the cross-sectional shape of the main body are attached at intervals in the tube axis direction.

  Further, the pipe structure of the present invention is characterized in that the above-described separator is installed and the cross section of the pipe member is divided.

  Thus, the pipe member of the present invention is provided with a pair of hooking portions at positions corresponding to the tip positions of the pair of support legs on the inner surface of the pipe member, so that the separator is bent and the fitting groove is fitted. Since the tip of the support leg is hooked on the hook even if it comes off the joint ridge, the separator can be prevented from falling off.

  Moreover, a latching | locking part can be provided, without substantially increasing the weight of a pipe member by forming as a protruding item | line or a level | step difference which continues in a pipe-axis direction.

  Furthermore, the hooks are provided in pairs at symmetrical positions on both sides of the fitting ridge, so that the tip of the support leg can be hooked on the hook even if the pipe member is used in any direction. Can do.

  That is, there is no need to worry about the upward direction when inserting the separator into the tube member.

  In the pipe structure of the present invention, the separator is installed on any of the pipe members described above and the cross section of the pipe member is divided, so that the pipe cross section is divided while preventing the separator from falling off. Space saving of the road can be achieved.

  In addition, since the separator of the present invention is attached to the main body portion that divides the tube member with a reinforcement member that is matched to the cross-sectional shape of the main body portion at intervals in the tube axis direction, the separator is prevented from bending. Separation of the separator can be prevented.

  Furthermore, the pipe structure according to the present invention can reduce the space of the pipe by dividing the cross section of the pipe while preventing the separator from dropping by installing the separator and dividing the pipe member. Can do.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  First, the whole structure of the pipeline structure C provided with the separator 2 of this invention is demonstrated using FIG.

  As shown in FIGS. 1 and 2, the pipe structure C of the present invention is divided by a pipe member 1 for protecting a cable, a separator 2 that divides the cross section of the pipe member 1 into two parts, and a separator 2. Are provided in the upper space, and the main cables 43 are provided in the lower space.

  The separator 2 is made of resin, and has a plate-like main body portion 21 on which the lead-in cable 41 is placed, and both ends of the main body portion 21 in the tube axis orthogonal direction D2 downward along the inner peripheral surface of the pipe line. And a pair of support legs 22, 22 formed so as to be bent.

  The main body portion 21 is formed in a long and substantially rectangular plate shape along the tube axis direction D1, so that the lead-in cables 41,... Inserted through the upper space are close to the center by the action of gravity. A flat portion 21a near the center of the tube axis orthogonal direction D2 and inclined portions 21b and 21b inclined obliquely upward from the flat portion 21a are provided.

  Further, the support leg portion 22 is formed in a curved plate shape integral with the main body portion 21 by resin, and extends downward from both ends of the tube portion orthogonal direction D2 of the main body portion 21 along the inner peripheral surface of the pipe member 1. Thus, the separator 2 is supported.

  Further, in the vicinity of the upper end connected to the main body portion 21 of the support leg portion 22, a fitting groove 23 continuous along the tube axis direction D <b> 1 is provided, and the fitting provided on the inner peripheral surface of the tube member 1. It is fitted to the ridge 12 and can slide.

  In addition, the outer surface 22b of the support leg portion 22 is formed with a minute gap between the outer surface 22b and the inner surface 11 of the tube member 1 so that the frictional resistance when the separator 2 is inserted into the tube member 1 is reduced. Yes.

  The main cable 43 is a large-diameter cable in which copper wires are bundled. The main cable 43 is accommodated one by one in a cylindrical sheath 42 having a large diameter, and is placed in a lower space of the pipe member 1 separated by the separator 2. It is arranged.

  Further, the lead-in cable 41 is a small-diameter cable branched from the main cable 43 in a hand hole (not shown), and is disposed in the upper space of the pipe member 1 and protrudes at a predetermined position of the pipe member 1. It is pulled out from a branch pipe and pulled into a house or store.

  And the pipe member 1 of this Embodiment is formed in the elongate cylindrical shape with resin, The fitting convex strips 12 and 12 which the fitting grooves 23 and 23 of the separator 2 fit so that sliding is possible. And thin-walled portions 14, 14, 14, 14 formed so as to sandwich the fitting ridges 12, 12.

  The fitting ridges 12 are continuously formed in the tube axis direction D <b> 1 as ridges having a trapezoidal cross section, and a pair of fitting ridges 12 are provided at positions facing the diameter direction on the inner surface 11 of the tube member 1.

  Further, the thin portion 14 has a thickness of a normal tube member 1 necessary for strength, and is formed in a shallow groove shape provided in the thick portion 13 formed thicker than usual. It is provided symmetrically on both sides of the strip 12.

  Therefore, a step 15 as a latching portion is formed between the thin portion 14 and the thick portion 13.

  Further, the height of the step 15 corresponding to the thickness difference between the thin portion 14 and the thick portion 13 is formed so as to have at least the thickness of the support leg portion 22 so as to prevent the separator 2 from falling off. The

  In the state where the separator 2 is installed inside the tube member 1, the fitting groove 23 of the support leg 22 is fitted to the fitting protrusion 12, and the support leg 22 has the outer surface 22 b as the inner surface of the thin part 14. It fits inside the thin groove-shaped thin part 14 so that the surfaces are matched.

  Further, the step 15 as the latching portion is formed with a minute gap from the tip 22a of the support leg portion 22 in order to reduce resistance when the separator 2 is inserted.

  That is, the circumferential length of the thin wall portion 14 is formed slightly longer than the length of the support leg portion 22 of the separator 2, so that the space between the tip 22 a of the support leg portion 22 and the side surface of the step 15. A minute gap is provided so that the end faces do not contact each other.

  Next, the operation of the pipeline structure C of the present embodiment will be described.

  As described above, the pipe member 1 according to the present embodiment is used as a latching portion at a position corresponding to the position of the tip 22a of the support leg 22 in the vicinity of the inner surface 11 where the outer surface 22b of the support leg 22 of the separator 2 contacts. By providing the step 15, the tip 22 a of the support leg 22 is hooked on the step 15 even when the separator 2 is bent, so that the separator 2 can be prevented from falling off.

  That is, conventionally, when many retractable cables 41 are placed on the separator 2 or when a frictional force is generated when the separator is inserted and a load is applied downward, 23 may come off from the fitting ridges 12 and 12 of the pipe member 1, and the separator 2 may fall off.

  If the size of the separator 2 is increased in order to prevent the drop off, the friction with the inner surface 11 of the tube member 1 is increased, the insertion property of the separator 2 is deteriorated, and the separator 2 is improved in order to improve the insertion property. Decreasing the size makes it easier to drop off.

  Therefore, in the present embodiment, the size of the separator 2 is not increased in order to ensure insertability, while a step 15 is provided on the inner surface 11 of the tube member 1 to hook the tip 22a of the support leg 22. .

  Then, even if the separator 2 is bent by the load and the fitting grooves 23 and 23 are deformed so as to be disengaged from the fitting ridges 12 and 12 of the pipe member 1, the tips 22 a and 22 a of the support legs 22 and 22 are always stepped. Since it is latched by 15 and 15, the separator 2 can be prevented from falling off.

  That is, when the separator 2 bends in the cross section of the tube axis orthogonal direction D2, the center of the main body portion 21 in the tube axis orthogonal direction D2 is displaced downward, and is integrally connected to both ends of the main body portion 21 in the tube axis orthogonal direction D2. The tips 22a and 22a of the supporting leg portions 22 and 22 are deformed so as to open outward.

  Therefore, even if the separator 2 is bent and deformed, the support leg portions 22 and 22 do not exceed the steps 15 and 15, and the separator 2 does not fall off.

  Thus, the tube member 1 of the present embodiment can realize both contradictory functions of suppressing resistance when the separator 2 is inserted and preventing the separator 2 from falling off.

  Further, the step 15 as the latching portion is provided in a total of four locations one by one at symmetrical positions on both sides of the fitting ridges 12, 12, so that the supporting leg can be used regardless of the vertical direction of the pipe member 1. The tips 22 a and 22 a of the portions 22 and 22 can be hooked on the steps 15 and 15.

  Further, in the pipe structure C of the present embodiment, the separator 2 is installed on the pipe member 1 as described above, and the tips 22a and 22a of the support legs 22 and 22 are hooked on the steps 15 and 15 as the hooks. By being stopped, it is possible to divide the cross section of the pipe line while preventing the separator 2 from falling off and to save the space of the pipe line.

  If the separator 2 can be prevented from falling off in this way, more lead-in cables 41 can be provided in the upper space of the separator 2 than in the prior art, and a part of the trunk cable 43 is disposed in the upper space. Can also be provided.

  Hereinafter, a pipe line structure C1 including a pipe member 1A having a form different from that of the above embodiment will be described with reference to FIG.

  The description of the same or equivalent parts as those described in the above embodiment will be given the same reference numerals.

  First, from the configuration, as shown in FIG. 3, the pipe structure C1 of this embodiment includes a pipe member 1A, a separator 2, a lead-in cable 41,..., A main cable 43,. I have.

  The tube member 1A of the present embodiment is formed into a long cylindrical shape with resin, and the projections 12 and 12 and the projections formed so as to sandwich the fitting projections 12 and 12 therebetween. Articles 16, 16, 16, and 16 are provided.

  The ridges 16 are continuously formed in the tube axis direction D1 (see FIG. 2) as small ridges having a semicircular cross section, and are provided symmetrically on both sides of the fitting ridges 12.

  In the state where the separator 2 is installed inside the tube member 1A, the fitting groove 23 of the support leg 22 is fitted to the fitting ridge 12, and the support leg 22 has the outer surface 22b as the inner surface 11 of the tube member 1. And are fitted between the fitting ridges 12 and the ridges 16 so as to match the surfaces.

  Further, the protrusion 16 as the latching portion is formed with a minute gap from the tip 22a of the support leg portion 22 in order to reduce the resistance when the separator 2 is inserted.

  Next, the operation will be described.

  Thus, in this embodiment, the latching portion is formed as the ridges 16 and 16 that are continuous in the tube axis direction D1.

  Therefore, 1 A of pipe members of a present Example can implement | achieve both the contradictory functions of resistance suppression at the time of inserting the separator 2, and prevention of drop-off of the separator 2. FIG.

  Furthermore, 1 A of pipe members of a present Example can provide the protruding item | line 16,16 as a latching part, without increasing a weight almost.

  That is, when the step 15 as the latching portion is formed by providing the thick portion 13 and the thin portion 14 as in the above embodiment, the weight corresponding to the increase in thickness of the thick portion 13 is increased. Although it will increase, if it is the protruding item | line 16, the increase in a weight can be suppressed to the minimum.

  Moreover, if the latching | locking part is formed as the protruding item | line 16,16, since the internal cross-sectional area of 1 A of pipe members is hardly reduced, of drawing-in cable 41, ... and trunk cable 43, ... Storage space can be secured.

  And the pipe line structure C1 of a present Example is equipped with the separator 2 in the above-mentioned pipe member 1A, and the front-end | tips 22a and 22a of the support leg parts 22 and 22 are latched by the convex strips 16 and 16 as a latching part. By doing so, it is possible to divide the cross section of the pipe line while preventing the separator 2 from falling off, thereby saving the space of the pipe line.

  Other configurations and operational effects are substantially the same as those in the above-described embodiment, and thus the description thereof is omitted.

  Hereinafter, a pipe structure C2 in which a reinforcing plate 3 as a reinforcing member is attached to the separator 2 will be described with reference to FIGS.

  The description of the same or equivalent parts as those described in the above embodiment will be given the same reference numerals.

  First, from the configuration, as shown in FIG. 4, the pipe structure C2 of this embodiment includes a pipe member 1B, a separator 2, a lead-in cable 41,..., A main cable 43,. I have.

  In the separator 2 of this embodiment, a reinforcing plate 3 as a reinforcing member is attached to the surface of the main body 21 that is the lower surface in the installed state on the side where the support legs 22 are provided.

  As shown in FIG. 5, the reinforcing plate 3 is formed into a bent rectangular plate shape by a material having high rigidity such as a metal represented by stainless steel, and matches the shape of the main body 21 of the separator 2. The central plane portion 31 and inclined portions 32 and 32 extending obliquely upward from both ends are provided. The material of the reinforcing plate 3 may be FRP.

  Further, a rivet hole 33 for driving a rivet 34 is provided in the approximate center of the flat portion 31, and rivet holes 33, 33 are also provided in the vicinity of the end portions of the inclined portions 32, 32.

  Accordingly, in the installed state, the flat surface portion 31 is aligned with the flat surface portion 21a of the main body portion 21 of the separator 2, and the inclined portions 32 and 32 are aligned with the inclined portions 21b and 21b of the main body portion 21 of the separator 2, so that the rivets 34, 34 and 34 are fixed.

  The reinforcing plate 3 may be attached to the separator 2 by adhesion, or may be fixed by being fitted into the gap 24 between the inclined portion 21 b of the separator 2 and the fitting groove 23. In the latter case, the rigidity of the separator 2 can be improved and the separator 2 can be further prevented from falling off.

  In addition, a plurality of reinforcing plates 3 as the reinforcing members are attached with a predetermined interval of about several meters (specifically, about 1 to 5 m) in the tube axis direction D1 of one separator 2.

  Next, the operation will be described.

  Thus, the separator 2 of the present embodiment is attached to the main body portion 21 that divides the tube member 1B with the reinforcing plate 3 as a reinforcing member that matches the cross-sectional shape of the main body portion 21 with an interval in the tube axis direction D1. Since the bending of the separator 2 is suppressed, the separator 2 can be prevented from falling off.

  In addition, it is possible to realize both contradictory functions of suppressing resistance when the separator 2 is inserted and preventing the separator 2 from falling off.

  That is, when the size of the separator 2 is increased in order to prevent the separator 2 from falling off, the friction with the inner surface 11 of the pipe member 1B is increased, the insertability of the separator 2 is deteriorated, and the insertability is improved. When the size of the separator 2 is reduced, it is easy to drop off.

  Therefore, in this embodiment, the size of the separator 2 is not increased in order to ensure insertability, but the reinforcing plate 3 is attached to the separator 2 to increase the rigidity, thereby suppressing the bending deformation of the separator 2.

  As described above, if the deformation of the separator 2 is suppressed and the vicinity of the center of the main body 21 of the separator 2 can be prevented from being displaced downward, the vicinity of the upper ends of the support legs 22 and 22 is not displaced inward. Therefore, the fitting grooves 23 and 23 are not detached from the fitting ridges 12 and 12.

  In addition, the reinforcing plate 3 of the present embodiment is not attached continuously to the separator 2 in the tube axis direction D1, but is attached intermittently at a predetermined interval. It is possible to cope with deformation that twists around an axis.

  In addition, since the reinforcing plate 3 is formed in a plate shape, the cross-sectional area of the lower space is hardly reduced.

  Further, by attaching the reinforcing plate 3 having a high rigidity, the separator 2 itself can be formed of a resin having a low rigidity and a deforming performance, so that the entire separator 2 can be reduced in weight and the manufacturing cost can be suppressed.

  And the pipe line structure C2 of a present Example divides | segments the cross section of a pipe line, preventing the separator 2 falling off by installing the separator 2 reinforced by the reinforcing plate 3 and dividing the pipe member 1B. Therefore, the space of the pipe line can be saved.

  Other configurations and operational effects are substantially the same as those in the above-described embodiment, and thus the description thereof is omitted.

  The best embodiment and Examples 1 and 2 of the present invention have been described in detail above with reference to the drawings, but the specific configuration is not limited to this embodiment or Examples 1 and 2, and Design changes that do not depart from the gist of the invention are included in the present invention.

  For example, in the above-described embodiment and Examples 1 and 2, the case where the step 15 and the ridge 16 as the latching portion are provided symmetrically to the fitting ridge 12 is described, but the present invention is not limited to this. The hooking portion may be provided only on one side of the fitting ridge 12.

  Moreover, in the said Example 2, although the case where the reinforcement board 3 as a reinforcement member was attached to the lower surface of the separator 2 was demonstrated, it is not limited to this, If there is no trouble at the time of insertion cable drawing, it will be on the upper surface of the separator 2 It may be attached.

  Further, in the above-described embodiment and Example 1, the case where the latching portion is provided continuously in the tube axis direction D1 has been described, but the present invention is not limited to this and is provided with a predetermined interval. It may be provided only in the vicinity of the end of the pipe member.

  In the embodiment and Examples 1 and 2, the application example to the separator for the straight portion is illustrated, but the invention is not limited to this, and the separator for the curved portion (for example, Japanese Patent Application Laid-Open No. 2007-236117). (Publication)).

It is sectional drawing explaining the structure of the pipe line structure of the best embodiment of this invention. It is a perspective view explaining the structure of the pipe line structure of the best embodiment of this invention. It is sectional drawing explaining the structure of the pipe line structure of Example 1. FIG. It is sectional drawing explaining the structure of the pipe line structure of Example 2. FIG. It is explanatory drawing explaining the structure of the pipe line structure of Example 2. FIG. (A) is a bottom view explaining the attachment position of a reinforcement member, (b) is a perspective view of a reinforcement member.

Explanation of symbols

C, C1, C2 Pipe structure D1 Pipe axis direction D2 Pipe axis orthogonal direction 1, 1A, 1B Pipe member 11 Inner surface 12 Fitting protrusion 15 Step (holding portion)
16 ridges (hanging part)
2 Separator 21 Body 22 Support leg 22a Tip 23 Fitting groove 3 Reinforcing plate (reinforcing member)

Claims (6)

With a pair of fitting ridges along the tube axis direction on the inner surface,
A main body part that divides the cross section and a pair of support leg parts that are provided at both ends of the main body part along the inner surface of the tube member, and are provided on the support leg parts so as to be slidably fitted to the fitting protrusions. A pipe member in which a separator having a fitting groove is installed,
A pipe member characterized in that a pair of latching portions are provided on the inner surface of the pipe member at positions corresponding to the tip positions of the pair of support leg portions.   The pipe member according to claim 1, wherein the latching part is formed as a ridge or a step which is continuous in the pipe axis direction.   The pipe member according to claim 1 or 2, wherein a pair of the latching portions are provided at symmetrical positions on both sides of the fitting protrusion.   The pipe structure characterized by the said separator being installed in the pipe member as described in any one of Claims 1 thru | or 3, and the cross section of a pipe member being divided | segmented. Installed on the pipe member with a pair of fitting ridges along the pipe axis direction on the inner surface,
A main body part that divides the cross section; a pair of support leg parts that are provided at both ends of the main body part along the inner surface of the tube member; and a slidable fit provided on the support leg part that is slidable on the fitting protrusion. A mating groove, and a separator,
The separator is characterized in that a reinforcing member matched with the cross-sectional shape of the main body portion is attached to the main body portion with an interval in the tube axis direction.   A pipe structure in which the separator according to claim 5 is installed and a cross section of the pipe member is divided.

Images