JPH11336952A - Curved piping tool for flexible tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To pass a pipe and wire without any trouble even in the curved part of a flexible tube by arranging a mounted part for attaching a small diameter preventing tool to prevent the contraction of the curved diameter of the flexible tube fitted in a fitting groove. SOLUTION: A center part in the curving direction of a flexible tube fitted in the fitting groove 4 of a piping tool main body M can be retained from its outer side by a small diameter preventing tool B attached to the mounted part of the center part of the piping tool main body M, therefore the flexible tube can be prevented from being slipped from the fitting groove 4 to the outer side, and the curved diameter of the flexible tube can be prevented from being contracted. Therefore, even in the case that a pipe and the like and wire and the like are passed through the flexible tube, the curved part of the flexible tube may not be shifted from the piping tool main body M by the resistance of the passing of the pipe and wire, and the pipe and the like and wire and the like penetrated through the inside of the flexible tube can be followed after the curved shape of the flexible tube in the curved part of the flexible tube and can be smoothly sent while being curved. As a result, work to pass the pipe and the like and wire and the like through a tube can be facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bent pipe used for bending a protection pipe (sheath pipe) of a hot water supply pipe or a flexible pipe such as an electric conduit to make a bent pipe. It is.

[0002]

2. Description of the Related Art As one of conventional curved pipe fittings, there is known one disclosed in Japanese Utility Model Publication No. 1-34489. The curved plumbing fixture A 'shown in FIGS.
Is a pipe for raising a flexible pipe and forming a curved pipe. The outer peripheral side (outside in the radial direction of the curve) serving as the back surface of the pipe body having a quadrant arc shape is opened, and the protective pipe is provided. The pipe fitting body M ′ provided with a fitting groove 31 capable of fitting the same over its entire length, and the fitting flanges 32 provided at both ends in the bending direction of the pipe fitting body M ′. , Fitting groove 31
And a pair of closing lids 33 for partially closing both ends of the opening. The plumbing tool main body M ′ is fixed to the lower surface of the floor or the like via a pair of legs 34 attached to the center in the bending direction without interfering with the opening.

[0003] For example, a protective pipe (sheath pipe) P for inserting and protecting a hot water supply pipe is started up using the curved pipe fitting A 'in the following manner. First, the protective tube P is bent and inserted into the fitting groove 31 from the opening on the back side of the plumbing tool main body M ′, and then the pipe is inserted into each fitting flange 32 at both ends of the plumbing tool main body M ′. The closure lid 33 is fitted from the bending direction of the fitting main body M ', and the pipe fitting main body M'
At both ends in the curved direction, the protective tube P bent and fitted into the internal fitting groove 31 is prevented from coming off in the curved radial direction. In this state, the curved plumbing fixture A 'is fixed to the floor lower surface G via the pair of legs 34,
The protective pipe P is piped, and a hot water supply pipe (not shown) is pushed in from one end of the protective pipe P and is passed therethrough.

However, when the hot water supply pipe is passed through the protection pipe P, the bent portion of the protection pipe P is displaced with respect to the bent pipe A 'due to the resistance of the pipe. As shown by the dotted line, the curved diameter of the protective tube P tends to be smaller. As a result, the pipe resistance of the hot water supply pipe is further increased, which sometimes makes it difficult or impossible. As described above, this problem occurs not only when a pipe is passed through a flexible pipe but also when a wire such as an electric wire is passed through another flexible pipe such as a bent conduit pipe. Also,
It happens in exactly the same way.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a curved pipe which can be passed through a flexible pipe having a curved pipe without any trouble even when the flexible pipe is bent. The task is to provide plumbing fixtures.

[0006]

In order to solve this problem, a means adopted by the present invention is to bend a flexible tube which is entirely bent in an arc shape and which is fitted in a fitting groove therein. Curved plumbing tool with a plumbing tool body for
The pipe fitting body is provided with a mounting portion for mounting a diameter-reducing preventing tool for preventing a flexible tube fitted in the fitting groove from having a reduced curved diameter.

[0007] Here, the "diameter reduction preventing tool" means that the fitting groove is partially covered except for both ends of the piping tool body, and the pipe fitting body is formed by resistance at the time of passage and passage. On the other hand, it means a member for preventing the flexible tube from being shifted and the curved diameter of the flexible tube fitted in the fitting groove to be reduced.

After the flexible tube is fitted into the fitting groove of the plumbing body, a fitting for preventing diameter reduction is attached to a portion except for both ends of the plumbing body so that the fitting groove is partially covered. Then, the pipe body is fixed to the lower surface of the floor or the like, and the flexible pipe is bent. Thereafter, a pipe such as a hot water supply pipe or a wire such as an electric wire is inserted from one end of the flexible pipe to pass through the pipe. Even when the pipes or the wires reach the curved portion of the flexible tube supported by the curved pipe fitting, the curved portion of the flexible tube is reduced by the diameter preventing device. Since the outside is held so that the curved diameter does not become small, the flexible tube does not shift with respect to the plumbing tool main body, and the pipes and wires are formed in a curved shape of the flexible tube. In accordance with, it is fed smoothly while being bent, and it is passed and piped.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to examples. Figure 1 is a perspective view showing a state in which the the pipe device body M which constitutes the Curved pipe tool A ₁ according to the present invention a closing ring R were separated, FIG. 2 saw piping member body M from below is a perspective view, FIG. 3, the protective tube P using Curved pipe tool a ₁ according to the present invention is a side view of the start-up pipe state, FIG. 4 is a side cross-sectional view of the same state FIG. 5 is an enlarged sectional view taken along line X ₁ -X _{1 of} FIG. 4, FIG. 6 is an enlarged sectional view taken along line X ₂ -X _{2 of} FIG. 4, and FIG.
FIG. 8 is an enlarged cross-sectional view taken along line X ₃ -X _{3 of} FIG. 4, and FIG. 8 is an enlarged cross-sectional view taken along line YY of FIG. Curved plumbing fixture A of this embodiment
Reference numeral ₁ denotes a pipe for starting and piping a protection pipe P for inserting and protecting a hot water supply pipe therein.
And a closing ring R detachably attached to one end in the longitudinal direction.

The plumbing tool body M has a fitting and holding portion 1 having a quadrant arc shape for fitting and holding a curved portion of the protective tube P.
And a pair of upright plate portions 2 formed by extending the opening side of the fitting / holding portion 1 to the outer peripheral side as it is so as to be able to stand on its own. For this reason, the entire shape of the side surface of the plumbing tool main body M has an irregular right-angled isosceles triangle shape whose oblique side has an arc shape, and only the rising upper end portion has a predetermined length from the upper end to the lower side. The side is closed, and the tube insertion portion 3 has an irregular cylindrical shape such that the cross-sectional area increases toward the upper end, but the outer peripheral side of the remaining portion is entirely open. That is, a pair of upright plate portions 2 formed by extending the opening side of the insertion holding portion 1 as it is to the outer peripheral side are parallel to each other and opposed to each other, and the lower end surface 2a thereof is connected to the pipe insertion portion. 3 is formed parallel to the upper end surface 3a, and the side end surface 2b of the upright plate portion 2 which is the rear side of the plumbing body M as a whole is formed at right angles to the lower end surface 2a.

For this reason, the outer peripheral side, which is the back surface of the plumbing tool main body M, except for the pipe insertion portion 3, is entirely open at the portion of the pair of upright plate portions 2 constituting the same. The structure allows the protection tube P to be fitted from the back side of the plumbing tool main body M. When only the pair of upright plate portions 2 is viewed, the lower surface and the back surface are both open, and the back side of the pair of upright plate portions 2 is higher than the back side of the pipe insertion portion 3. It is opened with a slight penetration into the inside. With this structure, as shown in FIGS. 11 and 12, when the plumbing tool main body M is installed at the corner between the wall surface W and the floor lower surface G, foreign matter may be present at the corner. Also, the plumbing tool main body M can be installed at the corner without any trouble. As shown in FIGS. 4 to 6, the cross-sectional shape of the fitting holding portion 1 having a quadrant arc shape is substantially the same U-shape over the entire length, and the inner groove portion is provided. Form a fitting groove 4 for fitting the curved portion of the protective tube P.

As shown in FIG. 1, the plumbing tool main body M is also provided with upright plates 2 parallel to each other at its side end portions, and the side end surfaces are provided over the entire circumference. U
A flange-shaped flange body 5 is provided so as to protrude to the outer peripheral side, and a half-cylindrical ring fitted portion 6 to which the closing ring R is fitted on the outer peripheral side is provided outside the flange body 5. , And extends in the bending direction of the fitting / holding portion 1. For this reason, the pipe fitting body M
A large step portion is formed at the base end of the ring fitted portion 6 in a side view. A plurality of retaining ridges 7 are provided on an outer peripheral surface of an end portion of the ring fitted portion 6 along the direction of the fitting groove 4 in a circumferential direction.

Further, the fitting holding portion 1 in the plumbing tool main body M
A central portion in a curved direction, and the fitting holding portion 1
A plurality of bind line insertion holes 8 into which bind lines B described later are inserted are provided at predetermined intervals along the direction of the fitting groove 4 at a connection portion between the pair of upright plate portions 2.
Further, as shown in FIGS. 1, 2, and 13, auxiliary fixing flanges 9 are provided on the front and rear ends of the lower end portions of the pair of upright plate portions 2, respectively, so as to face each other. Tsuba 9
Between them, a fixing flange 11 for fixing the plumbing tool main body M to the floor lower surface G is provided. The fixed flanges 11 provided one by one on the outside of the pair of upright plate portions 2 are provided as shown in FIG.
As shown, a plurality of the Curved pipe tool A ₁ when placed side by side in the lateral direction, so as to do a fixed flange 11 of Curved pipe tool A ₁ adjacent do not interfere with each other, in the longitudinal direction by a predetermined length It is provided shifted.

The closing ring R closes the outside of the fitting groove 4 at the portion of the pipe fitting body M where the ring is fitted, so that the protective tube P fitted into the fitting groove 4 is bent. It is a member that prevents it from falling out in the radius direction. That is, the closing ring R is in the form of a ring having flexibility along the circumferential direction, and is applied to the portion of the ring fitting portion 6 at the portion of the retaining ridge 7 opposite to the circumferentially opposed portion. A pair of flat plate portions 20 are provided. The length of the closing ring R is a dimension that is fitted with a slight gap between the collar body 5 provided on the side end surface of the plumbing tool main body M and the retaining ridge 7.

Next, with reference to FIGS. 9 to 12, using the Curved pipe tool A ₁ described above, to start-up the pipe a protective tube P for protecting inserted through the water supply hot water pipe inside The case will be described. The protective tube P has both appropriate flexibility and rigidity, and is also referred to as a sheath tube. First, as shown in FIGS. 9 and 10, a closing ring R is loosely fitted from the upper end of the protective tube P to the outside thereof, and the upper end of the protective tube P is inserted into the pipe insertion portion 3 of the plumbing device main body M. Through
Both the closing ring R and the piping tool body M are loosely fitted to the protective tube P. Thereafter, as shown in FIG. 11, the curved portion of the protective tube P is fitted into the fitting groove 4 inside from the opening on the outer peripheral side of the plumbing tool main body M, and the wall surface W and the floor lower surface G are formed. The pipe fitting main body M is installed at the corner formed by the above, and the closing ring R loosely fitted to the protective tube P is moved toward the pipe fitting main body M in the middle thereof, as shown in FIG. The closing ring R is fitted to the outside of the ring fitted portion 6 so as to be closed. In addition, as shown in FIG. 11, when the plumbing tool main body M is installed at a predetermined position, the plumbing tool main body M is loosely fitted into the protective tube P via the pipe insertion portion 3 at the upper end thereof. Therefore, the work of installing the plumbing tool main body M at a target position becomes easy.

As a result, the outside opening of the other end of the fitting groove 4 provided along the longitudinal direction of the plumbing tool main body M is closed, so that the protective tube P does not come out of the portion in the curved radius direction. In the Curved pipe tool A ₁ of the present embodiment, the one end portion of the fitting groove 4, have is provided tube insertion portion 3, the outer opening of the fitting groove 4 of the part, the tube insertion It is closed by the peripheral wall of the part 3. For this reason, by closing the closing ring R outside the ring fitting portion 6 of the plumbing tool main body M, the openings at both ends of the fitting groove 4 provided in the plumbing tool main body M are both closed. At both ends, the protective tube P fitted into the fitting groove 4 does not come off in the direction of the curved radius. In addition, in the portion of the closing ring R, the inner circumferential surface of the closing ring R is caused by the reaction force of the bent protective pipe P to escape in the radial direction of the bending, and the outer circumferential surface of the ring fitted portion 6 is formed. Therefore, the structure is such that the closing ring R does not easily come off the ring fitted portion 6. In addition, when the blocking ring R once fitted is removed for some reason, the protection tube P is pulled toward the ring fitted portion 6 to eliminate the reaction force acting on the protection tube P. Good.

Subsequently, the pipe fitting body M is installed at the corner where the wall surface W and the floor lower surface G intersect, and a screw 10 is inserted into a screw hole 11a provided in a fixed flange 11 thereof. The plumbing tool main body M is fixed to the floor lower surface G via the screw 10.
Thereafter, as shown in FIG. 12, the bind wires B are inserted into the plurality of bind wire insertion holes 8 provided in the plumbing tool main body M, and the bind wires B are bound on the inner peripheral side of the plumbing tool main body M. Then, the curved portion of the protective tube P fitted in the fitting groove 4 is drawn toward the inside in the curved radial direction as shown in FIGS. 4 and 5, and the state is maintained. For this reason, at least three places of the fitting groove 4 of the plumbing tool main body M at both ends and the center thereof, the outer openings are partially covered, and the protection pipe P fitted in the fitting groove 4 is provided.
The radius of curvature is reduced, so that it is prevented from falling outside. In this construction example, the upright portion of the protection tube P is in contact with the wall surface W, but is not in contact with the wall surface W.
It is also possible to install in.

In this manner, a water supply pipe (not shown) is passed from one end of the protection pipe P, which rises on the floor from the floor lower surface G and is piped, so that the water supply pipe is bent. When the protection tube P reaches the protection tube P, an external force is applied to the protection tube P to reduce its curved diameter, as shown by a two-dot chain line in FIG. However, in the Curved pipe tool A ₁ according to the present invention, the protective tube P that is fitted into the fitting groove 4 of the pipe member body M is not its opposite ends but also at its middle part, by binding wire B The hot water pipe inserted into the protection tube P is forwardly moved along the curved portion of the protection tube P as it is inserted and held in the tube insertion portion 3 so as not to reduce the curvature diameter. It is passed smoothly. 3, 4, 7, and 19, the floor plate 12 has an insertion hole 13 for inserting the pipe insertion portion 3 at the upper end of the plumbing tool main body M to face the upper surface of the floor plate 12. While being provided, the gap between the insertion holes 13 is closed by the closing plate 14 on the upper surface of the floor plate 12.

Further, in the above-described embodiment, using the bind wire B, at the central portion in the longitudinal direction of the fitting groove 4 of the pipe fitting body M, the curved diameter of the protective tube P fitted into the fitting groove 4 is reduced. It has become smaller and prevents it from getting out,
As shown in FIG. 14, a plurality of rod insertion holes 15 are provided at the center in the longitudinal direction of the plumbing tool main body M, and a rod 16 made of a bolt inserted into the rod insertion hole 15 is used. It is also possible to prevent the curved diameter of the protective tube P fitted in the fitting groove 4 from becoming small.

Further, a bend pipe tool A ₂ shown in FIGS. 15 to 17, by implementing the present invention to bend in the pipe member A described under "Prior Art"', piping member body The protection tube P fitted into the fitting groove 31 of M 'is prevented from falling out in the radius direction at the center of the curved portion. That is, a pair of fitted flanges 2 are provided on both sides of the opening at the central portion in the longitudinal direction of the pipe fitting body M ′.
The pair of fitted flanges 21 are provided on the pair of fitted flanges 21 in substantially the same manner as the closing lids 33 are fitted into the fitted flanges 32 at both ends thereof. The central closing lid 22 is detachably fitted from the bending direction.

[0021] In Konowan song pipe tool A _2, 'the after fitting the protective tube P into the fitting groove 31 of the pipe member body M' piping member body M and both end portions of a total of three locations of the central portion Each of the fitted flanges 32 and 21 provided on the
22 is fitted. Thus, 'by carrying out the present invention, at the time of passing pipe water supply hot water pipe, pipe fitting body M of Curved pipe tool A _2' conventional Curved pipe tool A fitting groove 31 Niwan song's It is possible to prevent the curvature diameter of the curved portion of the protection tube P fitted therein from becoming small.

Further, in each of the above embodiments, the diameter reduction preventing tool for preventing the diameter of the protection tube P fitted in the fitting groove 4 from decreasing at the center of the fitting groove 4 in the bending direction. The binding wire B, the bar 16 and the central closing lid 2
Although 2 is shown, any device may be used as long as it has the above function. For example, a slit bent in the bending direction is provided in the center of the plumbing tool main body M ′, and a curved plate is inserted into the slit, and the protective tube P fitted in the fitting groove 4 is inserted. May be applied to the outside. Further, the diameter-reducing preventing tool only needs to have a function of preventing the flexible tube fitted into the fitting groove of the plumbing tool body from going outside and reducing its curved diameter. As described above, not only the structure in which the fitting groove provided in the plumbing tool body is closed over the entire width, but also, for example, a short bar material is cantilevered from one end in the width direction of the fitting groove to the other end. Even if it is configured to cover only a part of the fitting groove without covering the entire width of the fitting groove, as in the case of holding the outside of the flexible tube inserted into the fitting groove, Good.

Further, the fitting groove 4 of the protection tube P provided in the plumbing tool body M of the above embodiment has one end opened, and this opening is partially closed by a closing ring R. Further, the fitting groove 31 of the plumbing tool main body M ′ is opened over its entire length, and the closing lids 33 are fitted at both ends to partially close the fitting groove 31. Are formed in a tubular shape, and without using a separate closing ring R or closing lid 33, the protective tube fitted in the fitting groove can be pulled out at both ends by its own structure. It is also possible to implement the present invention on a plumbing tool main body configured to prevent the above.

However, in actual construction, in order to facilitate the rise of a flexible tube having a certain degree of rigidity, at least one of the two ends of the fitting groove is required as in the case of the plunger body M of the above embodiment. It is preferable that the end of the fitting groove is attached to the opening at the end of the fitting groove to close the opening after opening the flexible tube.

[0025]

According to the curved pipe fitting according to the present invention, the flexible fitting fitted into the fitting groove of the pipe fitting body by the diameter reduction preventing tool attached to the attached portion at the center of the pipe fitting body. Pipes and wires can be used to hold the center of the pipe in the bending direction from the outside and to prevent the flexible tube from coming out of the fitting groove and reducing its bending diameter. Even when a flexible tube is passed through a flexible tube, the bent portion of the flexible tube does not shift with respect to the plumbing body due to the resistance of the flexible tube and the wire, and the tube inserted into the flexible tube. The type and line can be smoothly fed into the curved portion while being curved, following the curved shape of the flexible tube. As a result, the work of pipes and wires for pipes and wires becomes easy.

[Brief description of the drawings]

1 is a perspective view of a state where a pipe device body M which constitutes the Curved pipe tool A ₁ according to the present invention the closure ring R separated.

FIG. 2 is a perspective view of the plumbing tool main body M as viewed from below.

[3] The protection tube P using Curved pipe tool A ₁ according to the present invention is a side view of the start-up pipe state.

FIG. 4 is a side sectional view of a similar state.

FIG. 5 is an enlarged sectional view taken along line X ₁ -X ₁ of FIG. 4;

FIG. 6 is an enlarged sectional view taken along line X ₂ -X _{2 in} FIG. 4;

FIG. 7 is an enlarged sectional view taken along line X ₃ -X ₃ of FIG. 4;

FIG. 8 is an enlarged sectional view taken along line YY of FIG. 4;

FIG. 9 is an operation explanatory view showing a state before the closing ring R and the plumbing tool main body M are loosely fitted to the protective tube P.

FIG. 10 is an operation explanatory view in a state where both the closing ring R and the plumbing tool main body M are loosely fitted to the protective tube P.

FIG. 11 is an operation explanatory view showing a state immediately before a pipe fitting body M loosely fitted to a protective tube P is installed at a predetermined position.

FIG. 12 is an operation explanatory view showing a state in which the plumbing tool main body M loosely fitted to the protective tube P is installed at a predetermined position.

[13] Without fixing collar 11 interferes a plan view showing a state where a plurality of Curved pipe tool A ₁ is installed side by side in the lateral direction.

FIG. 14 is a cross-sectional view showing a structure that uses a bar member 16 to prevent a central portion of a curved portion of the protective tube P from coming out outside in a curved radial direction.

It is another perspective view of Curved pipe tool A ₂ according to the present invention; FIG.

FIG. 16 is a longitudinal sectional view of the same.

FIG. 17 is a sectional view taken along line ZZ of FIG. 16;

FIG. 18 is a perspective view of a conventional curved pipe fitting A ′.

FIG. 19 is a side view of a conventional curved pipe fitting A ′.

[Explanation of symbols]

A ₁ , A ₂ : curved pipe B: bind wire (minimum diameter prevention tool) M, M ': pipe body P: protective tube R: closing ring (end closing member) 4, 31: fitting groove 8: Bind wire insertion hole (Mounting part of diameter reduction prevention tool) 15: Bar material insertion hole (Mounting part of diameter reduction prevention tool) 16: Bar material (Diameter reduction prevention tool) 21: Fitted flange (Diameter reduction prevention) 22: Central closing lid (Tool for preventing diameter reduction)

Claims (5)

[Claims] 1. A curved plumbing tool comprising a plumbing tool body for bending and piping a flexible tube fitted into a fitting groove therein, the whole being bent in an arc shape, wherein the pipe tool body is provided. And a mounting portion for mounting a diameter-reducing preventing tool for preventing a bending diameter of the flexible tube fitted in the fitting groove from being reduced. Plumbing fixtures. 2. The flexible device according to claim 1, wherein end portions of the plumbing body in the longitudinal direction are provided with end closing members for closing an opening of a fitting groove of the portion. Curved plumbing fixture for pipes. 3. The tool for preventing diameter reduction is a binding wire,
The curved pipe fitting according to claim 1, wherein the attached portion is configured by an insertion hole through which the bind wire can be inserted. 4. The device according to claim 1, wherein the diameter reduction preventing member is a bar, and the attached portion is constituted by a bar insertion hole through which the bar can be inserted. Flexible pipe curved plumbing fixture. 5. The tool for preventing a diameter from decreasing is a closing lid capable of closing the fitting groove over the entire width, and the attached portion is a fitted portion capable of fitting the closing lid. The flexible pipe bending tool according to claim 1 or 2, wherein: