JP2003278951A - Piping fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a piping fixture whereby holding strength of a flexible duct pipe with respect to an installed part is improved, the portion to be installed is diversified, and thereby the range of selection of the portion to be installed can be widen. <P>SOLUTION: A grasping part 1b capable of covering the flexible duct pipe coaxially and having a fitting protrusion 1A capable of being fitted to a circular groove of the flexible duct pipe is integrally formed with a base 1a like a cantilever. A screw receiving hole 1e is formed on a free end part 1c successively formed to a free end side of the grasping part 1b. A screw insertion hole 1f is formed on a superimposed part 1d of the base 1a corresponding to a position whereon the free end part 1c is superimposed. A screw receiving hole 1h is formed on an extending part 1g of the base 1a corresponding to at least one side of the grasping part 1b along the duct axial direction. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe fixing tool that enables a flexible duct pipe such as a sheath pipe to be attached to a mounting portion.

[0002]

2. Description of the Related Art In recent years, as a method for laying hot water supply pipes and the like, flexible bellows-shaped pods, which are flexible duct pipes, have been previously installed on a piping route under the floor or vertically of a building under construction. After laying in a wall, etc., and after construction of the building, the actual pipe (inner pipe) such as a hot water supply pipe is inserted and guided in the sheath pipe to enable piping construction, and at the time of pipe replacement, the floor and wall are not destroyed In addition, there is a sheathing method in which the actual piping can be renewed and a dew condensation preventing effect and a heat retaining effect can be added. In this type of pod sheathing method,
As shown in FIG. 3, the U-shaped body 110 is bent outward to fold outward, and a fixed saddle 100 having a cross-sectional shape of approximately Ω is used to mount an attached portion such as an inner wall under the floor or a vertical wall. B
The pod 2 can be attached. Specifically, the sheath tube 2 is housed in the body portion of the fixed saddle, and can be attached to the attached portion B via the attachment screws C on the bending pieces 120, 120. In general, FIG.
As shown in (a), the body portion 110 of the fixed saddle 100 is formed with a locking projection 130 that engages with the annular groove portion 2A of the bellows body portion of the sheath tube 2 on the inner peripheral surface thereof. It is configured so that the actual piping can be smoothly inserted into the piping by restraining it at the mounting position and preventing it from moving freely.

[0003]

However, in the conventional pipe fixture 100, when the pipe is subjected to excessive tension during the pipe work or when the actual pipe is inserted into the sheath pipe 2, Depending on the location, the actual pipe may be in a state of being sent while making strong contact with the sheath,
In such a case, the sheath portion restrained by the fixed saddle loses its force and receives an external force to move together in the insertion direction, and as shown in Fig. 12 (b), it is fixed to the mounting surface by the mounting screw C. The body 110 of the fixed saddle 100 is forcibly moved in the insertion direction, leaving the bent pieces 120, 120, and the engagement protrusion 130 on the inner circumference of the body and the annular groove 2A of the sheath tube 2 are engaged. It has been pointed out that the smooth insertion operation of the actual pipe is hindered due to a defect such as clinging when the pipe is inserted and the pipe is inserted.

The sheath pipe itself is mounted under the floor or in the vertical wall, but since there are many places where the fixed saddle is not attached in such a portion to be attached, the pipe route with the shortest distance is simply provided. There are many cases where it is not possible to construct the actual tubing pipes based on the above judgment, and there is a problem in that setting the tubing pipe route requires skill.

The present invention has been made in view of the above-mentioned circumstances, and its main problem is to improve the holding strength of the flexible duct pipe with respect to the mounted portion and to diversify the mounting location. The point is to provide a pipe fixing tool that can widen the selection range of the planned attachment points.

[0006]

A characteristic feature of a pipe fixture according to claim 1 of the present invention is that it can be externally fitted to a flexible duct pipe having a bellows-shaped annular groove portion in an axially aligned state, and A pipe fixture in which a flexible arc-shaped gripping portion having an engaging projection that can be engaged with an annular groove of a flexible duct tube is cantilevered integrally with a base. A screw receiving hole is formed in the free end portion connected to the free end side of the portion, and a screw insertion hole is formed in the overlapping portion of the base corresponding to the position where the free end portion overlaps with the screw receiving hole. The screw receiving hole is formed in the extending portion of the base corresponding to at least one side in the core direction.

According to the above-mentioned characteristic construction, the flexible duct pipe is attached from the extending portion of the base to the mounted portion via the mounting screw, and the flexible duct pipe is fitted to the gripping portion so as to align the axis, and the base overlapping portion is provided. While overlapping the free end portion connected to the gripping portion with the screw end hole of the free end portion and the screw insertion hole of the overlapping portion that are attached to the attached portion via the attachment screw, the flexible duct pipe The ring-shaped groove is engaged with the engaging projection of the grip, and the flexible duct pipe is attached to the part to be attached while the grip is restrained. Even if an external force is applied to the flexible duct pipe in the axial direction of the pipe, the extension of the base is positioned to support the external force, so a pipe fixture such as a conventional fixed saddle is used. External force in the axial direction of the pipe in the flexible duct tube compared to In addition, the gripping part does not move in the direction of the external force and the restrained state of the flexible duct pipe is not released at the mounting position, and the structure is opposed to such external force. By improving the holding strength of the flexible duct pipe with respect to the attached portion, a reliable pipe fixture can be formed.

Further, since the extending portion of the base is formed in the grip shaft in the axial direction of the duct, the conventional pipe fixture in which the mounting portion of the mounted portion is provided in the width direction orthogonal to the pipe axial direction. Compared to, the dimension in the width direction is smaller, which allows it to be installed in places where it was narrow and could not be installed with conventional pipe fixtures. As a result, it is possible to improve workability such that the skill level can be reduced by facilitating the work of selecting the piping route, for example, in the case of sheathing pipe construction. it can.

Here, the axial center aligned state means a state in which the axial center of the arcuate grip portion and the axial center of the flexible duct tube are aligned, and only the aligned state in which the both axial cores match. However, it also includes a state in which the axes of both are close to each other.

According to a second aspect of the present invention, there is provided a characteristic feature of a pipe fixing tool, wherein a screw receiving hole formed in the free end portion and an extending portion of the base is engaged with a screw portion of a mounting screw inserted. This is in the point that the temporary fixing means is formed.

According to the above characteristic structure, when the mounting screw is engaged with the screw receiving hole, the mounting screw is temporarily fixed to the screw receiving hole, and for example, the flexible duct pipe is vertically moved in the vertical wall. In the case of mounting, it reduces the installation work that requires skill such as fixing the pipe fixture and the mounting screw at the same time while screwing to the mounted part inside the vertical wall. It is possible to improve the mounting workability.

According to a third aspect of the pipe fixing tool of the present invention, a tapered inclined guide surface is formed on a continuous surface extending from the overlapping portion of the base to the arcuate inner peripheral surface of the grip portion. In point.

According to the above characteristic structure, the base overlapping portion,
Since the flexible duct pipe inserted from the outside through the surface facing the free end portion connected to the grip portion can be smoothly guided to the grip portion in the axial alignment state, the flexible duct pipe. It is possible to improve the efficiency of piping construction.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION [Embodiment] A pipe fixture A according to an embodiment of the present invention will be described below with reference to the drawings. In this embodiment, as shown in FIG. 2, when a decorative wall panel P made of gypsum board is attached to a vertical wall portion of a room or the like in a building, it is attached by a square member such as a stud that becomes a nailing portion. An example of attaching the sheath 2 which is a flexible duct pipe to the portion B via the pipe fixture A will be described. Attached part B
The sheath pipe 2 (outer pipe) attached to is attached on the pipe route for laying a hot water supply pipe, etc., and after installation, the actual pipe (inner pipe) 3 such as a hot water supply pipe is inserted into the sheath pipe 2 and guided. Therefore, it is used for a sheathing method that enables piping construction.

The sheath 2 may be formed of, for example, polyethylene or polybutene, and may be a bellows-shaped tube that forms an annular groove 2A having a semicircular cross section along the pipe axis and having alternating peaks and valleys. Long length with flexibility (for example, 30 m to 5
It is a tube of about 0 m), which is wound in a drum shape in a state before piping, and can be unwound and used.

As shown in FIGS. 1 to 10, the pipe fixture A includes a base 1a and a flexible arc-shaped gripping portion 1b which can be externally fitted to the bellows-shaped sheath 2 in an axially aligned state. A free end 1c, which is integrally formed in a cantilever ring shape and is formed by a bent side at the tip of the grip 1b, is connected to a free end 1c, which is integrally formed with an overlapping portion 1d that overlaps with one end mounting portion of the base 1a. The screw receiving hole 1e formed in the end portion 1c and the screw insertion hole 1f formed in the overlapping portion 1d communicate with each other so that the mounting screw C can be screwed into the mounting portion B and the base 1a At the other end, an extending portion 1g is formed so as to extend to one side of the grip portion 1b in the pipe axial direction.
through the screw receiving hole 1h formed in g
The mounting screw C can be screwed in.

Further, the inner peripheral surface of the grip portion 1b has a semicircular shape having a diameter smaller than the inner diameter of the grip portion 1b along the circumferential direction, and is sandwiched between the mountain portion and the mountain portion of the annular groove portion 2A of the sheath tube 2. Engagement protrusions 1A that can engage with and engage with the recessed valleys are integrally formed.

Further, a boundary portion between the grip portion 1b and the free end portion 1c corresponds to a hole shaft through which the screw receiving hole 1e of the free end portion 1c and the screw insertion hole 1f of the overlapping portion 1d communicate with each other in a superposed state. 1m of groove is formed in the direction, and the screw head C2 of the mounting screw C
The avoidance allowance of is formed. Groove 1m of this embodiment
As can be seen from the drawing, the distal end side of the grip portion 1b is perforated by the concave groove 1m, but if the outer diameter of the sheath tube 2 is small, the outer diameter of the grip portion 1b is also set small. Therefore, it is not necessary to form the avoidance allowance of the screw head C2 at the boundary portion between the grip portion 1b and the free end portion 1c.

The screw receiving holes 1e and 1h formed in the free end portion 1c of the grip portion 1b and the extension portion 1g of the base plate 1a are
A temporary fixing means 10 is formed which engages with the threaded portion C1 of the inserted mounting screw C.

More specifically, as shown in FIGS. 8 to 10, in the screw receiving hole 1e of the free end 1c, the temporary fixing means 10 is formed at the hole opening edge below the through hole, and the screw of the extending portion 1g is formed. In the receiving hole 1h, the temporary fixing means 10 is formed at the hole opening edge on the upper side of the through hole. It is composed of four bow-shaped locking claws 10a ...
Since the central portion of each locking claw 10a is configured to have a diameter smaller than the mountain diameter of the thread portion C1 of the mounting screw C, which is a round head screw (wood screw), but larger than the valley diameter, mounting It can be engaged with the screw portion C1 of the screw C. here,
In the screw receiving hole 1e of the free end portion 1c, the temporary fixing means 10 is formed at the hole opening edge on the lower side of the through hole, and in the screw receiving hole 1h of the extending portion 1g, the temporary fixing means at the hole opening edge on the upper side of the through hole. Since 10 is formed, since the pipe fixture A is manufactured by resin molding, it has an arrangement configuration corresponding to a die configuration that facilitates the step of removing the upper die and the lower die.

Further, each locking claw 10a constituting the temporary fixing means 10 has a tapered or wedge-shaped cross section whose wall thickness decreases from the base to the tip, and the pipe is fixed. Since the tool A itself is made of a synthetic resin material, the mounting screw C is screwed into the locking claw 1.
0a and the screw portion C1 are brought into a state of engaging each other at a desired screw portion C1 position, or the elastic deformation of the locking claw 10a is used to fix the mounting screw C to the screw receiving holes 1e, 1e.
It is also possible to push it into h and elastically deform it so that the locking claw 10a is spread out so that the locking claw 10a and the screw part C1 are engaged with each other at the desired screw part C1 position. is there.

In practice, the pipe fixture A is applied to the mounted portion B, and the mounting screw C is temporarily fixed to the extended portion 1g so that the tip of the mounting screw C abuts on the mounted portion B. And the free end portion 1c communicates with each other.
A preferred use example is to insert the screw insertion hole 1f of d into the engagement state in which the tip of the attachment screw C abuts on the attachment portion B, and temporarily sets the attachment screw C.

This means that the screw receiving hole 1e of the free end 1c is formed.
In the above, even if the temporary fixing means 10 is formed on the hole opening edge on the lower side of the through hole or the temporary fixing means 10 is formed on the hole opening edge on the upper side of the through hole, there is no effect on the temporary fixing of the mounting screw C. However, in the screw receiving hole 1h of the extending portion 1g, when the temporary fixing means 10 is formed at the hole opening edge on the lower side of the through hole, the pipe fixture A is slightly lifted with respect to the attached portion B. Although it is possible to temporarily fix the mounting screw C in such a state, the temporary fixing means 1 can be used in a state where the pipe fixture A is directly abutted directly to the mounted portion B for work.
Since 0 is too close to the mounted portion B to temporarily fix the mounting screw C, the screw receiving hole 1h of the extending portion 1g
It is preferable that the temporary fixing means 10 is formed at a position closer to the upper side of the through hole.

On the continuous surface from the overlapping portion 1d of the base 1 to the arcuate inner peripheral surface of the grip portion 1b, there is formed a tapered inclined guide surface 20 that becomes higher toward the inner side of the insertion.

The height difference from the start end to the end of the inclined guide surface 20 is set to be slightly larger than at least the height of the head of the mounting screw C (round head screw). In this embodiment, since the extending portion 1g is formed on one side of the grip portion 1b in the duct axial direction, the sheath 2 is naturally attached to the attached portion B via the pipe fixing tool A. In the mounted state, since the screw head of the mounting screw C on the extension side and the sheath 2 are in a positional relationship of interference, the height is such that interference can be avoided. Or when the screw head of the mounting screw C and the sheath 2 do not interfere with each other, the thickness of the extending portion 1g is thinner than that of the other base 1 portion, or
On the contrary, it is possible that the other base 1a portion is thicker than the wall thickness of the extending portion 1g, and originally, the inclined guide surface 20 serves as a guide when the sheath tube 2 is externally attached to the grip portion 1b. Are formed.

The gripping portion 1b of this embodiment is in an expanded state in a single product state, and has a structure in which it is reduced in diameter against the elastic deformation force and overlaps with the overlapping portion 1d. A stopper projection 1k is integrally formed at the end of 1d to receive the elastic restoring force of the overlapping gripping portion 1b on the enlarged diameter side via the free end 1c. Here, in the state where the free end portion 1c is received, it is preferable that the elastic force in the diameter expanding direction acts on the diameter expansion blocking force so that the both are maintained in the aligned state. As a modified example, an engaging means such as a concave-convex engagement that can maintain the overlapping state for a long time may be formed between the free end portion 1c and the stopper protrusion 1k.

With this structure, the base 1 is attached to the attached portion B from the extending portion 1g through the attaching screw C,
With the axis X1 of the grip portion 1b and the axis X2 of the sheath tube 2 aligned with each other, and the sheath tube 2 fitted over the grip portion 1b,
The free end portion 1c of the grip portion 1b is superposed on the overlapping portion 1d of the base plate 1a while being aligned while being reduced in diameter against the expanding force.
After attaching the free end 1c to the stopper protrusion 1k, the screw receiving hole 1e of the free end 1c and the screw insertion hole 1f of the overlapping portion 1d, which are in communication with each other, are attached to the attached portion B via the attaching screw C. The grip portion 1b is provided in the annular groove portion 2A of the sheath tube 2.
The engaging projection 1A is engaged, and the sheath tube 2 is attached to the attached portion B while the grip portion 1b is restrained.

Further, since the extending portion 1g of the base 1a is formed in the pipe axis X1 direction of the grip portion 1b, which is the duct axis center direction in the grip portion 1b, the width dimension W orthogonal to the shaft core X1 direction is Since it has a small configuration, it can be attached to the attached portion B within its width, and the pipe fixture A that can sheath the pipe 2 having a large outer diameter with respect to the width with the gripping portion 1b. Can be formed.

[Other Embodiments] 1) In the above embodiment, an example in which an extending portion 1g is formed at the other end of the base 1a so as to extend to one side in the pipe axial direction from the gripping portion 1b. Although described, the present invention is not limited to this,
The pipe fixture A may be formed by extending the extending portions 1g on both sides of the grip portion 1b in the pipe axial direction.

2) In the above-described embodiment, the one in which the screw receiving hole 1h is formed in the extending portion 1g has been described, but the present invention is not limited to this, and the screw receiving hole 1h may be formed in two places. In this case, the mounting strength can be increased. Further, an example in which the screw receiving hole 1e of the free end portion 1c and the screw insertion hole 1f of the overlapping portion 1d which communicate with each other in the overlapping state are provided in one set has been described, but the present invention is not limited to this, and two or three sets are arranged. May be

3) In each of the above-mentioned embodiments, the description has been made of the case where the engaging projection 1A is formed on the inner peripheral surface of the grip portion 1b along the circumferential direction, but the present invention is not limited to this, and the sheath tube 2 is not limited thereto.
The peaks and valleys corresponding to the annular groove 2A may be provided on the inner peripheral surface of the grip 1b.

4) In the above-described first embodiment, a tapered inclined guide surface 20 is formed on the continuous surface extending from the overlapping portion 1d of the base 1a to the arcuate inner peripheral surface of the gripping portion 1b, which becomes higher toward the inner side of the insertion portion. Although the example is described, the present invention is not limited to this, and a taper that becomes lower toward the insertion inner part on a continuous surface from the overlapping portion 1d of the base 1a to the arc-shaped inner peripheral surface of the gripping portion 1b. Even if it forms a slanted guide surface, the sheath tube 2 inserted from the outside through the space between the overlapping portion 1d of the base 1a and the free end portion 1c is held by the grip portion 1b.
It is possible to smoothly guide the mantle so that the shaft center is aligned.

[Brief description of drawings]

FIG. 1 is a perspective view showing the entire pipe fixture of the present invention.

FIG. 2 is a plan sectional view showing a state in which a flexible duct pipe is attached to a mounting portion via a pipe fixing tool.

FIG. 3 is a simplified side view showing a state in which a flexible duct pipe is attached to an attached portion via a pipe fixing tool.

FIG. 4 is a vertical cross-sectional view showing a state in which a flexible duct pipe is attached to an attached portion via a pipe fixing tool.

FIG. 5 is a plan sectional view showing a state before the flexible duct pipe is attached to the pipe fixture.

FIG. 6 is a plan cross-sectional view showing a state in which a mounting screw is attempted to be screwed into a mounted portion on a superposed overlapping portion and a free end portion.

FIG. 7 is a plan sectional view showing a state in which a flexible duct pipe is attached to a pipe fixing tool.

FIG. 8 is a plan view of the pipe fixture.

FIG. 9 is a vertical sectional view showing a screw receiving hole at a free end portion.

FIG. 10 is a vertical cross-sectional view showing a screw receiving hole of the overlapping portion.

FIG. 11 is a perspective view showing a conventional pipe fixture.

FIG. 12 is a plan view showing the relationship between the attached portion, the pipe fixing tool, and the flexible duct pipe. (A) is a simplified view showing a state in which the flexible duct pipe is attached to the attached portion via the pipe fixing tool. Plan view (b) Simplified plan view showing the relationship between the pipe fixing tool and the flexible duct pipe in a state where a tensile force acts on the flexible duct pipe

[Explanation of symbols]

A piping fixture B Attached part 1A engagement protrusion 1a foundation 1b grip 1c Free end 1d overlapping part 1e Screw receiving hole 1f screw insertion hole 1h screw receiving hole 1g extension 2 sheath tube (flexible duct) 2A annular groove 10 Temporary fixing means 20 Inclined guide surface X1 gripper axis X2 flexible duct

Claims (3)

[Claims] 1. A flexible duct tube having a bellows-shaped annular groove portion can be externally fitted to the flexible duct tube in an axially aligned state, and an engagement protrusion engageable with the annular groove portion of the flexible duct tube can be provided. A flexible arc-shaped gripping portion is a cantilevered pipe fixing device integrally formed with a base, and a screw receiving hole is formed at a free end portion connected to a free end side of the gripping portion. On the other hand, a screw insertion hole is formed in the overlapping portion of the base corresponding to the position where the free end overlaps, and a screw receiving hole is formed in the extension of the base corresponding to at least one side of the grip portion in the axial direction of the duct. The formed pipe fixture. 2. The screw receiving hole formed in the free end portion and the extension portion of the base plate is provided with a temporary fixing means for engaging with the screw portion of the inserted mounting screw. Plumbing fixture. 3. The pipe fixing tool according to claim 1, wherein a tapered inclined guide surface is formed on a continuous surface extending from the overlapping portion of the base to the arcuate inner peripheral surface of the grip portion.