JP2005155247A - Pipe fixing fixture and piping method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe fixing fixture enabling easy installation work with a hardly-flexible pipe of which work employs the method comprising the steps of raising the home equipment side end of the hardly-flexible pipe laid on the foundation of the earthen floor to a height lower than the flooring level, executing flooring work in this state and then drawing out the tip end of the raised pie through a hole made in the floor and connecting the tip end with home equipment in installation work using the hardly-flexible pipe as a water conduit pipe in a detached house. <P>SOLUTION: The pipe fixing fixture has a temporary fixing part 1 for holding and temporarily fixing a pipe 4 on the side near the foundation face, a permanent fixing part 3 located adjacently to the temporary fixing part for holding the pipe 4 slidably in the approximately vertical direction to the pipe axis and a gate part 2 located between the temporary fixing part 1 and the permanent fixing part 3 and expanded by a sideward moving force applied on the pipe 4 to move the pipe 4 from the temporary fixing part 1 to the permanent fixing part 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a fixing jig for piping and an indoor piping method using the fixing jig for piping, and is useful for water supply / hot water supply piping in a detached house.

When constructing water supply / hot water supply piping in a detached house with flexible pipes, the equipment side pipe end of the flexible pipe laid on the soil foundation surface from the place where the header is scheduled to be installed to the place where the residential equipment is scheduled to be installed At a low height, take up the slack and start up, paste the floor in this state,
After that, the pipe rising tip is drawn out on the floor surface while extending the slack from the hole provided in the floor, and connected to the water stop cock of the residential equipment while swinging the tip of the drawer pipe up and down. (For example, refer to Patent Document 1).

JP 2003-49458 A

However, in the case of using a difficult flexible tube for the water / hot water supply pipe, for example, a composite pipe in which a plastic inner layer and a plastic outer layer (for example, a polyethylene inner layer and a polyethylene outer layer) are provided on a metal reinforcing layer (for example, an aluminum layer), Slack expansion and contraction, and therefore it becomes difficult to swing the drawer tube up and down. For this reason, a socket joint is attached to the end of the pipe that has been raised below the floor attachment height, and after attaching the floor, an auxiliary pipe is inserted through a hole provided in the floor and connected to the socket joint. The pipe is connected to the stop cock of the housing equipment.
However, this method requires an extra socket joint, inevitably lowering the reliability of water leakage due to an increase in the number of connection points, and is difficult to repair because the socket joint is placed under the floor. .

The object of the present invention is to construct a water-resistant pipe in a detached house with a difficult-to-flexible pipe, so that the end of the difficult-to-flexible pipe laid on the soil foundation surface is lower than the flooring height. Start up at a height and stick the floor in this state. After that, the construction method of pulling out the tip of the riser pipe from the hole provided in the floor and connecting it to residential equipment is easy to construct even with inflexible pipes. The pipe construction method and the pipe fixing jig are provided.

The pipe fixing jig according to claim 1 is a pipe fixing jig that is fixed to the base surface, and has a temporary fixing part that grips and temporarily fixes the pipe on the side close to the base surface, and the temporary fixing part And has a main fixing part for slidably gripping the pipe in a direction substantially perpendicular to the pipe axis direction, and between the temporary fixing part and the main fixing part,
A gate portion is provided that is expanded by a side-direction moving force applied to the tube and moves the tube from the temporary fixing portion to the main fixing portion.

The piping fixing jig according to claim 2 is the piping fixing jig according to claim 1, wherein the casing is substantially reverse U-shaped, and a bent portion for fixing to the base surface is provided at the lower end of the inverted U-shaped casing. The inner width of the inverted U-shaped housing is slightly narrower than the outer diameter of the tube, and the gate portion is formed by the inner constriction of at least one of the both sides of the inverted U-shaped housing at the position spaced from the lower end of the tube. The lower side is a temporary fixing part, and the upper side is also a main fixing part.

According to a third aspect of the present invention, there is provided the piping fixing jig according to the second aspect, wherein the surface facing the temporary fixing portion of the constriction is a rounded surface adapted to the outer surface of the pipe.

In the indoor piping method according to claim 4, a water passage pipe is laid on the foundation surface before pasting the floor of the building, and one end of the pipe is raised at a height equal to or lower than the floor sticking height, Temporarily fixing to the base surface with the temporary fixing part of the piping fixing jig according to any one of claims 1 to 3, and then sticking the floor, pulling out the rising tip of the laying pipe from the floor surface, As a result, the pipe is moved from the temporary fixing part to the main fixing part by expanding the gate part with the upward movement force of the pipe acting on the gate part of the fixing jig for piping, and the top and bottom of the tip accompanying the connection of the leading end of the drawing pipe According to the movement, the pipe is slid vertically in the main fixing part.

FIG. 6-2 shows the time when the floor of the detached house is stuck, and the end of the difficult-to-flexible water-permeable pipe 4 on the soil foundation surface is temporarily fixed by the temporary fixing part 1 of the fixing jig A for piping. It has been launched at a height that is less than the height of the floor. In response to drawing the pipe rising tip e from the floor surface 6, the gate part 2 of the pipe fixing jig A is expanded by the pipe pulling force F, and the pipe 4 is transferred from the temporary fixing part 1 to the main fixing part 3. Then, when connecting the pipe rising tip to the water faucet of the housing equipment, the pipe tip can be swung in the vertical direction by sliding the pipe in the main fixing portion 3 in the vertical direction.
Therefore, even if a difficult-to-flexible pipe is used for water supply / hot water supply piping of a detached house, floor obstruction can be easily performed without obstructing the rising end of the pipe.

  Hereinafter, embodiments of a fixing jig for piping according to the present invention will be described with reference to the drawings.

FIG. 1 (a) is a perspective view showing an embodiment of a fixing jig for piping according to the present invention, and FIG. 1 (b) is a front view of the same.
The overall shape of the jig housing is a tall inverted U-shape of a belt-like body, and the material is corrosion-resistant and excellent in elasticity and strength, such as vinyl chloride resin, polypropylene, polyethylene,
A resin system such as ABS resin or polyamide resin, or a metal system such as steel sheet, galvanized steel sheet, or SUS can be used.
The inner width b of the inverted U-shaped housing is substantially equal to the outer diameter d (see FIG. 2) of the water passage tube. The inner width b may be a dimension that can substantially prevent the tube from shaking to the left and right, but is 1 m with respect to the tube outer diameter d.
It is preferable to make it small about m-2.
Reference numerals 11 and 11 denote right-angle bent portions provided at the lower ends of both side pieces of the inverted U-shaped housing, and are provided with screw holes for fixing to the foundation surface between the soil. Reference numeral 2 denotes a gate portion provided at a position substantially spaced from the lower end of the inverted U-shaped housing by the diameter of the water passage tube, and is formed by constricting both side pieces of the inverted U-shaped housing inward (21, 21).
Reference numeral 1 denotes a temporary fixing portion that screws the right-angle bent portions 11 and 11 to the foundation surface of the soil and temporarily fixes the pipe between the basic surface and the constrictions 21 and 21 of the gate portion 2. Reference numeral 3 denotes a main fixing portion which is located above the gate portion 2 and grips the tube in a state in which the tube can be slid up and down.
As shown in FIG. 2, in the temporary fixing portion 1, the water passage pipe 4 can be clamped between the soil base surface 5 and the constrictions 21 and 21 of the gate portion 2. In the illustrated example, the constricted surface 211 facing the temporary fixing portion 1 is a rounded surface that matches the outer surface of the pipe. The constriction of the gate portion is not limited to this. For example, as shown in FIG.
(B) A triangular constriction as shown in FIG.

The temporary length of the fixed portion 1 Is h ₂ (the length of the base a central point of the gate portion) is substantially equal to the diameter d of the water passing pipe.
As will be described later, when the tip of the riser pipe is pulled out from the hole in the floor after being attached to the floor, the water passage pipe of the temporary fixing portion passes through the gate portion and is transferred to the main fixing portion. When the tip of the drawn pipe is connected to the water stop cock of a residential equipment, it is swung up and down, and the water pipe slides up and down in the fixed part following the up and down movement of the pipe tip. Moved.
The length h ₁ of the main fixing portion 3 (the length from the central point of the gate portion as a base point) is set to allow this sliding movement. For example, the range of vertical movement of the tube tip is 10-30 cm above the floor.
As described above, the length h ₁ of the fixed portion is set to 5 to 40 cm.

As shown in FIG. 2, when the opening width of the gate portion is a, in order to move the water flow tube 4 from the temporary fixing portion 1 to the main fixing portion 3, the diameter of the water flow tube 4 is d, and the gate Part 2 left and right (da)
It is necessary to expand with a width of / 2. The mechanical state at the time of expansion is the length (h ₁ + h ₂ ) [=
approximately equal to the generation of a lateral load w is applied to a point from one end of the fixed-fixed beam distance h ₂ and h], the lateral load w is the bending stiffness of the fixture material as EI

[Formula 1] w = 1.5 (d−a) EI [1+ (h ₂ / h ₁ )] ³ / h ₂ ³
Given in.
The lateral load w is determined by the water flow tube 4 based on the drawing force F applied to the tip of the tube when the water flow tube 4 passes from the temporary fixing portion 1 through the gate portion 2 to the main fixing portion 3. This is a lateral component force generated in contact with the constriction of the gate portion, and varies depending on the shape of the constriction. In the case of a 45 ° taper constriction, the force F acts on both constrictions in half, and approximately ½ of the bisected force F / 2 acts as a lateral load, so that w = F / 4.
Therefore, from the above equation (1)

[Formula 2] F = 6 (da) EI [1+ (h ₂ / h ₁ )] ³ 3 / h ₂ ³
Is established.
Therefore, if this F is too large, it becomes difficult to pass through the gate portion of the water passage tube, and the workability of connecting the tip of the water passage tube is reduced. If F is too small, the water passage at the temporary fixing portion is reduced. The temporarily fixed state of the pipe becomes unstable. As is clear from the equation (2), the F decreases as the opening width a of the gate portion increases, and increases as a decreases, and F greatly depends on the opening width a of the gate portion. According to the results of earnest study by the present inventors, the opening width a of the gate portion is approximately ½ of the water passage pipe diameter d.
Is appropriate.

FIG. 4 is a front view showing another embodiment of the fixing jig for piping according to the present invention.
As in Example 1, the overall shape of the casing is a reverse U-shape with a tall band-like body, and the material is corrosion resistant and excellent in elasticity and strength, such as vinyl chloride resin, polypropylene, polyethylene, ABS. Resin, resin system such as polyamide resin, metal system such as steel plate, galvanized steel plate, SUS can be used.
The inner width of the inverted U-shaped housing is substantially equal to the outer diameter of the water passage tube as described above, and is preferably about 1 mm to 2 smaller than the outer diameter of the tube.
Reference numerals 11 and 11 denote right-angle bent portions provided at the lower ends of both side pieces of the inverted U-shaped casing. Reference numeral 2 denotes a gate portion provided at a position substantially spaced from the lower end of the inverted U-shaped casing by the diameter of the water passage pipe, and is formed by constricting (21) one side piece of the inverted U-shaped casing inwardly in a semicircular arc shape. . 1 is a temporary fixing part, and 2 is a main fixing part.
Similarly to the above, the length h ₂ of the temporary fixing portion 2 is substantially equal to the diameter d of the water passage tube, and the main fixing portion 3
The length h ₁ is set so as to allow the vertical sliding movement of the water flow pipe. For example, the vertical swing movement range of the pipe tip is 10 to 30 cm on the floor, and the length h ₁ of the main fixing part is 5 to 40 cm. Set to

In this embodiment, as shown in FIG. 5, when the opening width of the gate portion 2 is a, in order to move the water passage tube 4 from the temporary fixing portion 1 to the main fixing portion 3, It is necessary to move the constriction tip 211 of one side piece of the inverted U-shaped housing to the outside in the lateral direction by (da), where the diameter is d. The mechanical state at the time of movement is a distance h ₂ from one end of the both-end fixed beam having a length (h ₁ + h ₂ ) [= h].
It is almost equal to the state in which the lateral load w is applied to the point, and the lateral load w is the bending rigidity of the fixing jig material.
As EI

[Formula 3] w = 3 (d−a) EI [1+ (h ₂ / h ₁ )] ³ / h ₂ ³
Given in.
The lateral load w is due to the drawing force F applied to the tip of the rising pipe when the water passing pipe 4 passes from the temporary fixing part 1 through the gate part 2 to the main fixing part 3. This is a lateral component force generated when the working tube 4 abuts against the single constriction 21 of the gate portion 2, and in the case of a 45 ° taper constriction, it is approximately w = F / 2.
Therefore, from the above equation (3)

[Formula 4] F = 6 (da) EI [1+ (h ₂ / h ₁ )] ³ / h ₂ ³
Is established.
Therefore, the relationship between F and the opening width a of the gate portion is the same as that of the first embodiment, and it is appropriate that the opening width a of the gate portion is approximately ½ of the water passage diameter d.

6-1 to 6-4 are drawings showing an embodiment of the piping method according to the present invention.
6A, 51 indicates soil concrete, 52 indicates a base, 53 indicates a framework such as a pillar and a beam, and the floor is not yet attached. Reference numeral 4 denotes a difficult-to-flexible water passage pipe laid on the foundation surface 511 between the soil from the header installation planned location to the residential equipment installation planned location, and the end on the residential equipment side is lower than the flooring height. As shown in (b) of FIG. 6A, the starting point is temporarily fixed to the soil foundation surface 511 by the temporary fixing portion 1 of the piping fixing jig A according to the present invention.
As the hardly flexible water-permeable tube 4, for example, a composite tube in which an inner layer of a heat-resistant polyethylene that is flexible and excellent in corrosion resistance and heat resistance is provided on the inner surface of an aluminum reinforcing layer and an outer layer of high-density polyethylene is provided on the outer surface is used. it can.

After the end portion of the hardly flexible water-permeable pipe is raised and temporarily fixed in this manner, the heat insulating material and the floor panel are pasted to perform floor pasting. Because the tip position of the end of the rising pipe is lower than the flooring height,
Floor sticking can be performed smoothly without interruption by the riser pipe.

After the floor is attached, as shown in FIG. 6-2 (A), the leading end is pulled out from the hole provided in the floor 6 [At this time, as shown in FIG. It is temporarily fixed by the temporary fixing portion 1 of the piping fixing jig A], and the pulling force F causes the gate portion 2 of the piping fixing jig A to pass through the water pipe 4.
As shown in (b) of FIG. 6-3, the water-passing pipe 4 is transferred to the main fixing part 3 of the fixing jig A, and the pipe is erected by sliding upward in the main fixing part 3. The raised tip is raised as shown in FIG.
6-2 (b), the drawing force of the pipe 4 required to expand the gate portion 2 of the fixing jig A is F and the pipe from the fixing jig A at the initial drawing time of the rising end of the pipe shown in FIG. Assuming that the distance to the vertical start-up portion 40 is S, a bending moment FS acts on the lower end 401 of the vertical start-up vertical portion, and a bending moment Fx acts on the pipe location p at the horizontal distance x from the fixing jig A.
Therefore, the bending deformation of the pipe portion 402 due to the bending moment Fx (x = 0 to S) and the bending deformation of the vertical pipe portion 401 due to the bending moment FS can be caused by the large bending rigidity and gate of the hardly flexible water-permeable pipe. Temporary fixing part 1 in fixing jig A can be kept slightly due to sufficiently low F on part expansion.
It is possible to smoothly perform the transfer of the water flow pipe 4 from the main fixing part 3 to the main fixing part 3.
In this way, after pulling the rising tip of the hardly flexible water-permeable pipe onto the floor, the pipe tip is connected to the water stop cock of the housing equipment B by a joint as shown in FIG. In this connection, as shown in FIG. 6-4, it is necessary to shake the pipe tip up and down, but the vertical direction of the pipe at the main fixing portion 3 of the fixing jig A shown in FIG. Since the resistance force f against the slide is sufficiently lower than the passage resistance force of the tube at the gate portion 2 (substantially equal to the F), the tube 4 is slid up and down at the fixed portion 3 while moving the tube. The rising tip can be smoothly swung up and down, and the connection of the pipe rising tip can be easily performed.

In addition, in order to prevent the position of the tube tip from moving until the tube rise tip is pulled out on the floor, a vertical guide tube is attached to the base, and the floor is pasted with the tube rise tip inserted into the vertical guide tube. Thereafter, the vertical movement of the tip of the rising pipe can be performed while passing through the guide pipe.

It is drawing which shows one Example of the fixing jig for piping which concerns on this invention. It is drawing used in order to show the expansion state of the gate part in the fixing jig for piping of FIG. It is drawing which shows another example of the gate part of the fixing jig for piping which concerns on this invention. It is drawing which shows another Example of the fixing jig for piping which concerns on this invention. It is drawing used in order to show the expansion state of the gate part in the fixing jig for piping of FIG. It is drawing which shows before the floor sticking of the piping method which concerns on this invention. It is drawing which shows the drawing-out initial stage to the floor of the pipe starting tip of the piping method which concerns on this invention. It is drawing which shows the time of the upward movement of the pipe starting tip of the piping method concerning the present invention. It is drawing which shows the time of the downward movement of the pipe starting tip of the piping method which concerns on this invention. It is drawing which shows the connection state of the pipe starting tip of the piping method which concerns on this invention, and housing equipment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Temporary fixing | fixed part 2 Gate part 3 This fixing | fixed part 21 Constriction a Opening width | variety of a gate part 4 Pipe for water flow

Claims (4)

It is a tube fixing jig fixed to the base surface, and has a temporary fixing portion for gripping and temporarily fixing the tube on the side close to the basic surface, and the tube is arranged in the temporary fixing portion so that the tube is substantially in the tube axis direction. It has a main fixing part that is slidable in a direction perpendicular to the main fixing part, and the pipe is expanded from the temporary fixing part to the main fixing part by a side direction moving force applied to the pipe between the temporary fixing part and the main fixing part. A fixing jig for piping, which is provided with a gate portion to be transferred to. The housing is almost U-shaped, and the lower end of the inverted U-shaped housing is provided with a bent part for fixing to the foundation surface. The inner width of the inverted U-shaped housing is slightly narrower than the outer diameter of the tube, and is almost outside the tube from the lower end. The gate part is formed by the inner constriction of at least one of the both sides of the inverted U-shaped housing at a position apart from the diameter, the lower side is the temporary fixing part with the gate part as a boundary, and the upper side is also the main fixing part The fixing jig for piping according to claim 1. 3. The fixing jig for piping according to claim 2, wherein a surface facing the temporary fixing portion of the constriction is a rounded surface adapted to the outer surface of the pipe. The pipe according to any one of claims 1 to 3, wherein a water pipe is laid on the foundation surface before the floor of the building is laid, and one end of the pipe is raised at a height equal to or lower than the floor sticking height. Temporarily fix to the foundation surface with the temporary fixing part of the fixing jig for the pipe, then paste the floor, pull out the rising tip of the laying pipe from the floor surface, and with this drawing, the gate part of the fixing jig for piping The pipe is moved from the temporary fixing part to the main fixing part by expanding the gate part with the upward movement force acting on the pipe, and the pipe is moved at the main fixing part according to the vertical movement of the tip accompanying the connection of the leading end of the drawing pipe. An indoor piping method characterized by sliding in the vertical direction.

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