JP3278583B2 - Sheath tube riser - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheath tube rising portion holder used in a sheath tube method.

[0002]

2. Description of the Related Art In a concrete building, a sheath tube is prepared in advance on slab concrete for piping for water supply or hot water supply, or for wiring such as electric wires, and a holding concrete is poured. In addition, there is a so-called sheath pipe construction method in which concrete is cured and piping is performed using a sheath pipe.

[0003] There is also known a method of constructing a floor by merely placing a sheath tube on slab concrete without performing concrete casting. In this method, piping and wiring are performed using the sheath tube. Have been.

[0004] In the above-mentioned sheath tube construction method, as a sheath tube rising portion holder used for holding the sheath tube rising portion for raising the sheath tube from the slab concrete surface toward the wall, for example, Japanese Utility Model Laid-Open No. -20782, 63-195175, and JP-A-6-1965.
There are those described in Japanese Patent Publication No. In particular, 6-19
FIGS. 9 to 11 of Japanese Patent Publication No. 65-165 show a holding tool which has been widely implemented in the past.

[0005]

This type of retainer is buried in cast concrete.
Alternatively, since it is hidden under the constructed floor structure, it is required to be inexpensive because it is so-called disposable, and to be easy to use for improving workability.

[0006] In Japanese Utility Model Laid-Open No. 6-1965 mentioned above,
The point that the conventional retainer employs a method of screwing a retaining member formed separately from the retainer main body in order to fix the entire peripheral surface of the sheath tube at the lower end and the upper end of the retainer main body. There has been proposed a sheath tube rising portion holder that improves the shape of the holder body in a spiral shape and provides an annular portion at the lower end and the upper end to hold the entire circumference of the sheath tube.

However, the holding tool disclosed in the above publication has a helical structure in order to form the holding tool body and the annular portion at the upper and lower ends. Therefore, the holding tool cannot be manufactured by simple press working, and the manufacturing cost is low. There are difficulties in terms of. Also,
When attaching the sheath tube, it is necessary to insert the sheath tube into the annular portion at the upper and lower ends from the inside.

[0008] Further, the conventional sheath tube rising portion holder has the following features.
Two types, 100 mm and 150 mm, are prepared according to the thickness of the holding concrete or the height of the floor to be built, but this has reduced the merits of mass production by half. That is, if it can be used irrespective of the thickness of the holding concrete or the height of the floor to be built, there is a merit of mass production and it is effective to reduce the manufacturing cost.

SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide a sheath tube rising portion holder that can be manufactured at a lower cost and that is easy to use.

[0010]

SUMMARY OF THE INVENTION The object of the present invention is as follows.
1. A holder main body having a curved arc-shaped cross section that presses the upper surface of the sheath tube at a portion where the sheath tube rises from a horizontal state to a vertical state, a support leg continued downward from the holder main body, and A pair of locking portions disposed continuously, and a sheath tube back support member having a wedge portion at a lower portion inserted and engaged with the pair of locking portions, and The height from the support leg to the upper end of the sheath tube back support member is higher than the height to the upper end of the sheath tube rising portion holder,

2. The sheath tube rising portion holder according to the above 1, wherein the sheath tube is held in a curved state from a lower end of the holder main body to an upper end of the sheath tube back support member,

3. The distance between the pair of locking portions is such that the pair of locking portions is inserted gently at the start of insertion of the wedge portion and prevents the sheath tube back support member from coming out upward after the insertion engagement. Characterized in that the sheath tube rising portion holder is configured to be narrower downward.

4. At least the upper part and the lower part of the portion of the sheath tube back support member that comes into contact with the back surface of the sheath tube are curved surfaces along the cross-sectional shape of the sheath tube.
3. The sheath tube rising portion holder according to any one of 3.

5. The above-mentioned 1-4, wherein a convex portion for engaging with the bellows-like concave portion of the sheath tube is provided on the sheath tube back support member.
The sheath tube rising portion holder according to any of the above,

6. A projection provided below the wedge portion and engaged with a lower end of the locking portion to prevent the sheath tube back support member from coming out of the locking portion upward; A sheath tube rising portion holder according to any one of claims 1 to 5,

[7] The present invention is achieved by each of the sheath tube rising portion holders described in any one of the above items 1 to 6, wherein a mark indicating a position of a reference line of the sheath tube is provided on the support leg horizontal portion.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a holder for a sheath tube rising portion (hereinafter simply referred to as a holder) according to the present invention.

In FIG. 1, reference numeral 10 denotes a sheath tube, which is held from a horizontal state to an inclined state by a holder 20 described below and further rises up to a vertical state.

The holder 20 according to the present invention includes a holder main body 21 for pressing the upper surface of the sheath tube 10, a support leg 22 continuous below the holder main body 21, and a pair of support legs provided on the upper part of the holder main body 21. Locking portion 23, and the locking portion 23 has a wedge portion 24
And a sheath tube back support member 25 which is attached via a through hole.

The locking portion 23 is arranged in an inclined state corresponding to the inclination of the holder main body 21, and the sheath tube back support member 25 is also slightly bent at the upper end position of the wedge portion 24 so as to be fixed. In this case, the sheath tube back support member 25 is configured to be substantially vertical. Further, the pair of locking portions 23 is configured so that the distance between the locking portions 23 becomes narrower downward (see FIG. 3).

As shown in FIG. 2, the sheath tube back support member 25 is provided with a bent projection 27 at the lower end of the wedge portion 24 thereof. The protrusion 27 is provided on the wedge portion 24 as described later.
When it is inserted into the locking portion 23, it engages with the lower end of the locking portion 23 to prevent the sheath tube back support member 25 from coming out upward. In addition, it is preferable that at least the upper portion 25A and the lower portion 25B of the portion that comes into contact with the back surface of the sheath tube 10 have a curved surface along the cross-sectional shape of the sheath tube 10. By making the upper part 25A and the lower part 25B curved, not only the holding of the sheath tube 10 is more stable, but also the strength of the whole sheath tube back support member 25 is further improved. The sheath tube back support member 25 includes a wedge portion 24.
Substantially all of the portion except for the shape may be curved so as to conform to the cross-sectional shape of the sheath tube 10.

In the figure, reference numeral 31 denotes an operation knob for attaching and detaching the sheath tube back support member 25, which is formed by bending the lower portion 25B outward by approximately 90 degrees.

Reinforcing ribs R are formed at necessary places on the holder main body 21 and the support legs 22. The present invention also includes a mode in which the reinforcing ribs R are omitted as in the embodiments shown in FIGS. 5 and 6 described later.

Next, the engagement between the wedge portion 24 of the sheath tube back support member 25 and the locking portion 23 of the holding portion main body 21 will be described with reference to FIGS. In addition, FIG.
In (C), the holding portion main body 21 has a locking portion 23.
Only the illustration is shown, and other parts are omitted. Further, in FIG. 3C, a part of the locking portion 23 is cut away.

The wedge portion 24 of the sheath tube back support member 25 is shown in FIG.
As shown in FIG. 3 (A), when it is attached to the locking portion 23, it is inserted gently at the start of insertion, but as the insertion proceeds, the projection 27 below the wedge portion 24 as shown in FIG. Abuts against the inside 23A of the locking portion 23, and further insertion requires a strong force to push open the U-shaped end of the holder main body 21. In the final stage, as shown in FIG. As a result, the projection 27 escapes from the lower end of the locking portion 23 and projects laterally at the lower end of the locking portion 23, so that the sheath tube back support member 2
5 is prevented from escaping upward. According to this configuration, a click is generated when the projection 27 escapes from the lower end of the locking portion 23, so that it is possible to easily know that the wedge portion 24 is correctly engaged with the locking portion 23. . Therefore, the engagement can be confirmed only by the click sound, so that the workability in a dark place is remarkably improved.

The sheath tube back support member 25 has a projection 29
Is preferably provided. As shown in FIG.
By engaging the bellows-shaped concave portion 11 of the sheath tube 10, it is possible to prevent the displacement of the holding position of the sheath tube 10. The projection 29 may be formed by pressing or by adding another member.

Further, it is preferable that a mark 30 indicating a position of a reference line of the sheath tube 10 is provided on the support leg horizontal portion 26. Normally, the pipe position of the sheath tube 10 is simply marked on the construction site by a marking line indicating the position of the center axis of the tube. Therefore, when attaching the holder 20 to the construction site, the sheath tube 10 is positioned at an accurate position. It is necessary to position the holder 20 so that it is held. However, by providing the mark 30 on the support leg horizontal portion 26, it is only necessary to align the mark 30 with the blackout line, so that the installation is extremely easy.

According to the holder 20 according to the present invention, the sheath tube 1
First, the mounting operation of the holder main body 21 before mounting is performed, and then the sheath tube 10 is inserted into a space formed below the holder main body 21, and further bent so that the wedge portion 24 is formed.
The sheath tube 10 can be attached to the holder 20 only by attaching

The holder 20 according to the present invention can be formed by shearing and bending a single metal plate by pressing.

Next, the sheath tube riser holder according to the present invention is prepared in only one kind of size and can be adjusted to the thickness of the holding concrete, for example, 100 mm and 150 mm, or the height of the floor to be constructed. A configuration that can be used correspondingly will be described.

The height from the lower end of the support leg horizontal portion 26 to the upper end of the locking portion 23 is 80 to 100 mm, preferably 90 m.
When it is set to m, it is possible to cast a holding concrete of 100 mm thickness at this height or to construct a floor. In other words, placing concrete to this height,
Alternatively, in the construction of the floor, up to the upper end of the locking portion 23 is buried in the holding concrete or is hidden under the floor. Accordingly, the base end of the wedge portion 24 is buried in the pressing concrete at a position below the locking portion 23 or is hidden under the floor, and the sheath tube 10 is in the sheath tube back support member 2.
5 is supported from the back side so as to be in a vertical state by the exposed portion. Even though most of the sheath tube back support member 25 is exposed, it is located on the back side of the sheath tube 10 and is located on the wall side so that it is hard to see. Thus, aesthetic problems can be solved.

The sheath tube rising portion holder 20 according to the present invention
Instead of being buried in the holding concrete, the floor is constructed of wood or a synthetic material on the upper surface of the slab concrete, and the sheath tube rising portion holder 20 is arranged under the floor. Support leg horizontal part 2
6 is arranged under the floor from the lower end of 6 to the upper end of the locking portion 23, and the sheath tube back support member 25 is exposed on the floor. In addition to the size corresponding to the approximate diameter of the sheath tube 10, the sheath tube back support member Since an opening having a size corresponding to 25 may be provided in the floor material, it is not necessary to provide a large opening as in the case where the holder main body 21 is exposed on the floor, and the shape of the opening is simple. It has the advantage that the work is easy and the aesthetic treatment around the exposed sheath tube is also easy.

If the height from the lower end of the support leg horizontal portion 26 to the upper end of the sheath tube back support member 25 is set to 130 to 150 mm, preferably 140 mm, a 150 mm thick holding concrete is poured or slab concrete is used. 1
The construction of a floor with a height of 50 mm or more makes the whole buried in concrete or the floor.

Next, another embodiment of the sheath tube rising portion holder 20 according to the present invention will be described with reference to FIG. 5, FIG. 6 and FIG.

In the embodiment shown in FIG. 5, a projection 27 located at the lower end of the wedge portion 24 is provided slightly below the lower end of the wedge portion 24 in a bent state. The projection 27 engages with the lower end of the step 28 of the locking portion 23 when the wedge portion 24 is inserted into the locking portion 23 and the sheath tube back support member 25 is pressed in the direction of arrow A. The back support member 25 is prevented from slipping upward.

The embodiment shown in FIGS. 6 and 7 is different from the embodiment described with reference to FIGS. That is, in this embodiment, the holding of the sheath tube 10 by the holder 20 rises from a horizontal state to a vertical state. Further, the projection 27 at the lower end of the wedge portion 24 of the sheath tube back support member 25 is omitted. In the case of this embodiment, the wedge portion 2
4 is formed in a slightly tapered shape as shown in the figure, and on the other hand, the distance between the locking portion 23 and the other locking portion 23 is configured such that the upper portion is larger and the lower portion is slightly smaller. Therefore, the wedge portion 24 of the sheath tube back support member 25 is
At the time of attachment, the wedge portion 24 is sandwiched between the pair of locking portions 23 and the U of the holder main body 21 is inserted.
A force is needed to push open the end of the character. The holding of the wedge portion 24 by the pair of locking portions 23 prevents the sheath tube back support member 25 from coming out upward. In the case of this embodiment, the locking portion 23 and the wedge portion 24 are formed in order to more firmly hold the wedge portion 24 by the pair of locking portions 23 and prevent the sheath tube back support member 25 from coming out upward. Is more preferably fixed by fixing means such as adhesion, welding, and bundling.

[0037]

According to the present invention, the holder can be obtained by a process of only shearing and bending one metal plate by pressing, so that the manufacturing cost can be significantly reduced. At the time of actual construction, the sheath tube is inserted into the widely opened space below the holder body, and further bent, and then the wedge portion is pushed into the locking portion, and the sheath tube is pressed down on the back surface of the sheath tube. Since the mounting can be performed, the usability is very good as compared with the conventional product.

Further, the holder for the rising portion of the sheath tube according to the present invention can be used irrespective of the difference in the thickness of the holding concrete or the height of the floor to be constructed with one kind of size. It is effective in reducing manufacturing costs due to mass production advantages.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of the present invention.

FIG. 2 is a perspective view of a sheath tube back support member.

FIG. 3 is an explanatory view showing an engagement state between a wedge portion and a locking portion.

FIG. 4 is a side view of a main part showing an engaged state between the sheath tube and the convex portion.

FIG. 5 is a perspective view showing another embodiment of the present invention.

FIG. 6 is a perspective view showing still another embodiment of the present invention.

FIG. 7 is a perspective view of the sheath tube back support member of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10-sheath tube 11-bellows-like concave part 20-sheath tube rising part holder 21-holder main body 22-support leg 23-locking part 24-wedge part 25-sheath tube back support member 26-support leg horizontal part 27- Projection 28-Step 29-Convex 30-Mark 31-Operation knob R-Reinforcing rib

Claims (7)

(57) [Claims] 1. A holder main body having a curved arc-shaped section for pressing an upper surface of a sheath tube at a portion where the sheath tube rises from a horizontal state to a vertical state, a support leg continued downward from the holder main body, and the holding body A support member having a pair of locking portions continuously arranged at the upper end of the tool body, and a sheath tube back support member having a wedge portion at a lower portion inserted and engaged with the pair of locking portions. A sheath tube rising portion holder, wherein the height from the support leg to the upper end of the sheath tube back support member is higher than the height from the leg to the upper end of the locking portion. 2. The holder according to claim 1, wherein the sheath tube is held in a curved state from a lower end of the holder main body to an upper end of the sheath tube back support member. . 3. The pair of locking portions are inserted gently at the start of insertion of the wedge portion, and prevent the sheath tube back support member from coming out upward after the insertion engagement. The sheath tube rising part holder according to claim 1 or 2, wherein the interval between the locking parts is configured to be narrower downward. 4. A method according to claim 1, wherein at least an upper portion and a lower portion of a portion of the back surface supporting member which comes into contact with the back surface of the sheath tube are curved so as to conform to a cross-sectional shape of the sheath tube.
The sheath tube rising portion holder according to any one of the above. 5. The sheath tube rising portion holder according to claim 1, wherein a convex portion for engaging with the bellows-like concave portion of the sheath tube is provided on the sheath tube back support member. 6. A mechanism for preventing a sheath tube back support member from falling out of a locking portion by providing a projection below the wedge portion and engaging with a lower end of the locking portion. The sheath tube rising part holder according to any one of claims 1 to 5, characterized in that: 7. The sheath tube rising portion holder according to claim 1, wherein a mark indicating a position of a reference line of the sheath tube is provided on the horizontal portion of the support leg.