JP2007120134A - Sheet fixing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet fixing device which fixes a sheet to a pipe and maintains the fixed state. <P>SOLUTION: This sheet fixing device comprises in a main part: a tubular body 1 of arcuate shape in cross section; a fastening spring 15 screwed into the outer peripheral surface of the body 1 so that the circumferential both ends 2, 3 of the body 1 approach each other; and sliding stop members 20, 20 installed on the inner peripheral surface of the body 1 at the circumferential both ends 2, 3. Two swelled parts 8, 8 are formed at the circumferential other end 3 of the body 1 apart from each other in the axial direction of the body 1. A recessed groove-like locking part 10 formed along the axial direction of the body 1 is formed at the lower end of the swelled part 8. Since the approximately center 18 of the fastening spring 15 is engaged with the locking part 10 of the body 1, the circumferential both ends 2, 3 of the body 1 approaches to each other, and the sliding stop members 20, 20 press the sheet against the pipe stored in the body 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a sheet fixing tool used for fixing a sheet to a pipe, and particularly for fixing a curing sheet used for sealing a concrete placing site in a construction site in a cold region. used.

In cold regions like Hokkaido, if concrete is cast in the winter (October to February), the water in the concrete freezes before the concrete dries due to the cold, so the temperature must be kept at 5 degrees or higher. . In this case, if the sheet is fixed to the pipe with a string, a gap is formed and it is difficult to stabilize the temperature.
In addition, in the construction site, in order to fix a sheet | seat to a pipe, the joint shown by the following patent document 1 is used.
JP-A-10-115098

  However, in the case of the joint shown in Patent Document 1, only the inner peripheral surface of the main body contacts the sheet. Since the main body of the joint is formed of resin, the inner peripheral surface of the main body is smooth and the surface of the sheet is also smooth. For this reason, if a strong force is applied to the sheet after fitting the joint to the pipe via the sheet, the sheet may slip out of the pipe, and sufficient fixing force cannot be obtained for fixing the curing sheet in cold regions. It was.

  The present invention has been made in view of the above circumstances, and a main object thereof is to provide a sheet fixture that can fix a curing sheet to a pipe with a sufficient fixing force when a curing sheet is stretched in a cold region. It is in.

  The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 is a sheet fixing tool for fixing a sheet to a pipe, and a cylindrical main body having an arcuate cross section, and the main body It is characterized by comprising a tightening spring fitted to the outer peripheral surface of the main body and an anti-slip material provided on the inner peripheral surface of the both end portions of the main body in the circumferential direction so that both circumferential ends of the main body are close to each other.

  According to a second aspect of the present invention, the clamping spring is formed in an arc shape that is fitted along the outer peripheral surface of the main body, and one end in the circumferential direction is rotatably held by the main body. The seat fixing tool according to claim 1, wherein the other end portion in the direction can be engaged with and disengaged from a locking portion formed in the main body.

  According to the seat fixing tool of the present invention, even when a strong force is applied to the sheet in a state of being attached to the pipe covered with the sheet, there is no possibility that the sheet slides out of the pipe, and the concrete curing sheet is fixed in a cold region. A sufficient fixing force can be obtained.

  Hereinafter, the sheet fixture of the present invention will be described in more detail based on examples.

  FIG. 1 is a perspective view showing an embodiment of the seat fixture according to the present invention, and shows a state in which the engagement of the clamping spring is released. 2 is a front view of the seat fixture of FIG. 1, FIG. 3 is a rear view of the seat fixture of FIG. 1, and FIG. 4 is a right side view of the seat fixture of FIG. 5 is a cross-sectional view taken along the line AA in FIG. 2 to 5 show a state in which the tightening spring is engaged with the main body.

  The sheet fixture of the present embodiment includes a cylindrical main body 1 having an arc-shaped cross section, and a tightening spring 15 that is fitted to the outer peripheral surface of the main body 1 so that the circumferential ends 2 and 3 of the main body 1 are close to each other. The main portion includes anti-slip materials 20 and 20 provided on the inner peripheral surfaces of the circumferential end portions 2 and 3 of the main body 1.

  Specifically, the main body 1 of the seat fixing tool of the present embodiment is formed in a cylindrical shape having a substantially C-shaped cross section, and has flexibility that allows both end portions 2 and 3 in the circumferential direction to approach and separate from each other. In addition, the circumferential direction both ends 2 and 3 of the main body 1 are formed slightly thick. Although the material of the main body 1 is not particularly limited, a synthetic resin such as nylon or polyethylene is preferably used, and among them, a polypropylene synthetic resin having excellent cold resistance and weather resistance is most preferably used. Is done.

At both ends in the axial direction of the main body 1, rectangular projections 5 and 5 are respectively formed at the center in the circumferential direction so as to protrude radially outward. The protrusion 5 is formed with a rectangular recess 6 that opens to the axially outer side and the radial inner side of the main body 1.
On the outer peripheral surface of the main body 1, strip-like ribs 1a and 1a are formed along the circumferential direction so as to protrude radially inward slightly from both axial end portions thereof.

  Further, bulging portions 8 and 8 are formed on the outer peripheral surface of the main body 1. In the present embodiment, the bulging portion 8 is formed at two positions in the circumferential direction other end portion 3 of the main body 1 so as to be separated from each other in the axial direction. Each bulging portion 8 is formed integrally with the main body 1 so as to gradually increase its thickness from the vicinity of the central portion in the circumferential direction of the main body 1 toward the other end 3 in the circumferential direction. Is formed.

  In addition, the bulging part 8 of a present Example is formed in the elongate substantially rectangular shape along the circumferential direction of the main body 1 in front view, as FIG. 2 shows. Each side 8 a inside each bulging portion 8 is formed along the circumferential direction of the main body 1. Further, each side 8b outside each bulging portion 8 has a lower end portion (on the other end 3 side in the circumferential direction of the main body 1) slightly inclined toward the outer side in the axial direction of the main body 1. A square shape is formed by the outer sides 8b and 8b.

  A locking portion 10 is formed at the lower end of the bulging portion 8 (on the other end 3 side in the circumferential direction of the main body 1). The locking portion 10 of the present embodiment is a concave groove formed along the axial direction of the main body 1.

  Further, the circumferential end portion 2 of the main body 1 is provided with mounting portions 12 and 12 at two locations apart in the axial direction. The attachment portion 12 has a cylindrical shape that opens only on the outer side in the axial direction of the main body 1.

The main body 1 is provided with a clamping spring 15 that brings the circumferential ends 2 and 3 close to each other. In this embodiment, the main body 1 is provided with one clamping spring 15.
The clamping spring 15 of the present embodiment is formed in a substantially U shape by a metal wire material such as SUS, for example, and both open ends 16 and 16 are curved in a substantially semicircular arc shape slightly smaller than the outer diameter of the main body 1. Is formed. The open ends 16 and 16 of the tightening spring 15 are slightly inclined so as to approach each other toward the tip side, and as shown in FIG. 2, the open ends 16 and 16 of the tightening spring 15 are It is formed in a square shape. Moreover, the front-end | tip part 17 of the open both ends 16 of the clamp spring 15 is bent by the substantially L shape inside so that it may each oppose. The distal end portion 17 is inserted into the hole 12 a of the attachment portion 12 of the main body 1, so that the tightening spring 15 is rotatably provided on the main body 1.

  The central side 18 of the tightening spring 15 is fitted into the locking portion 10 of the main body 1 and can be engaged. Further, the central portion 19 in the axial direction of the central side 18 is bent in a triangular shape outwardly in the radial direction of the open ends 16 and 16.

  Anti-slip materials 20 and 20 are provided on the inner peripheral surfaces of the circumferential ends 2 and 3 of the main body 1, respectively. The anti-slip material 20 of the present embodiment is formed in an elongated strip shape by an elastic material such as rubber, and is provided along the axial direction of the main body 1.

The anti-slip material 20 has a substantially trapezoidal cross section that extends to both sides in the width direction as it goes to the back side. The surface 20a of the anti-slip material 20 is formed in an arc shape.
The anti-slip material 20 is fixed to the main body 1 by being inserted into grooves 23 and 23 formed along the axial direction on the inner peripheral surfaces of the circumferential ends 2 and 3 of the main body 1. In a state where the anti-slip material 20 is attached to the main body 1, the surface 20 a of the anti-slip material 20 slightly protrudes in an arc shape from the inner peripheral surface of the main body 1.

  Note that both axial end portions of the groove 23 formed in the main body 1 are open at both axial end surfaces of the main body 1, and the anti-slip material 20 is slid along the groove 23 from the open end portion. Thus, the anti-slip material 20 can be easily attached to the main body 1. Further, since the anti-slip material 20 is formed of an elastic material, it can be elastically deformed by being pushed into the groove 23 of the main body 1 and can be accommodated in the groove 23 and attached to the main body 1.

  A method for fixing a sheet to a pipe using the sheet fixing tool of this embodiment having such a configuration will be described. FIG. 6 is a cross-sectional view showing a usage state of the seat fixture of the present embodiment.

  First, in a state where the tightening spring 15 is not engaged with the locking portion 10 of the main body 1 (a state indicated by a two-dot chain line in FIG. 6), the sheet 30 extends along the circumferential ends 2 and 3 of the main body 1. The pipe 32 covered with is disposed, and the main body 1 is pushed into the pipe 32. Since the main body 1 has flexibility, when the main body 1 is pushed in, the circumferential ends 2 and 3 of the main body 1 are temporarily separated, and the pipe 32 and the sheet 30 are accommodated in the main body 1. Is done.

  Next, the clamping spring 15 may be rotated around the tip portions 17 and 17 (the attachment portion 12 of the main body 1), and the central side 18 may be engaged with the locking portion 10 of the main body 1. By rotating the tightening spring 15, the central side 18 rides on the bulging portion 8 and moves toward the other end 3 in the circumferential direction of the main body 1. At this time, the clamping spring 15 moves along the bulging portion 8 while expanding the diameter against the spring force. Then, by rotating the tightening spring 15, the central side 18 is engaged with and engaged with the locking portion 10 formed in the bulging portion 8. Specifically, both sides of a triangular bent portion 19 formed at the central portion in the axial direction of the central side 18 are engaged with and engaged with the locking portions 10 and 10 of the bulging portions 8 and 8, respectively.

In this way, by engaging the clamping spring 15 with the locking portion 10 of the main body 1, the clamping spring 15 sandwiches both the circumferential end portions 2 and 3 of the main body 1, and both circumferential end portions of the main body 1 are arranged. 2 and 3 are close to each other. As a result, the inner diameter of the main body 1 is reduced, and the main body 1 presses the sheet 30 against the pipe 32.
In order to enhance the spring effect of the tightening spring 15, it is preferable to form the locking portion 10 at a location close to the diameter position. That is, it is preferable to form the locking portion 10 and the attachment portion 12 at both ends in the diameter direction of the main body 1.

  By the way, when the seat fixture of the present embodiment is attached to the pipe 32, the anti-slip members 20, 20 are respectively arranged below the horizontal line (XX line) passing through the center of the pipe 32 in FIG. . Moreover, in the side view in FIG. 4 and FIG. 6, the surface 20a of each anti-slip | skid material 20 is orient | assigned and arrange | positioned toward the reverse C shape.

  With such a configuration, when the sheet fixing tool is attached to the pipe 32, the anti-slip material 20 firmly presses the sheet 30 against the pipe 32, and the sheet 30 is difficult to slide out of the pipe 32. In other words, in FIG. 6, the anti-slip material 20 presses the sheet 30 diagonally upward from the lower side against the pipe, so that even if a force to pull the sheet 30 is applied, the friction force with the anti-slip material 20 causes 30 is difficult to slide out of the pipe 32.

Thus, in this embodiment, the anti-slip material 20 is provided in the main body 1, so that the grip force against the seat 30 is increased as compared with the case where the anti-slip material 20 is not provided, and the wind pressure causes the seat to the pipe 32. 30 does not shift.
Further, since the anti-slip material 20 is formed of an elastic material such as rubber, the seat 30 is not damaged when the sheet fixing tool is attached to the pipe 32.

  When removing the seat fixture of this embodiment attached in this way from the pipe 32, first, the engagement of the clamping spring 15 is released. At this time, the engagement can be easily released by inserting, for example, a flathead screwdriver into the bent portion 19 formed on the central side 18 of the clamping spring 15 and pulling up the central side 18 from the locking portion 10 of the main body 1. Can do.

  Then, after releasing the engagement of the tightening spring 15, the main body 1 may be removed from the pipe 32. At this time, the main body 1 can be easily detached from the pipe 32 by inserting, for example, a flathead screwdriver or the like into the concave portion 6 of the protrusion 5 of the main body 1 and pulling up the main body 1 from the pipe 32.

The seat fixture of the present invention is not limited to the configuration of the above embodiment, and can be changed as appropriate.
For example, in the above embodiment, the main body 1 is provided with the anti-slip material 20 formed of an elastic material. However, when the main body 1 is molded with resin, the inner peripheral surfaces of the circumferential ends 2 and 3 of the main body 1 are used. It is also possible to form an anti-slip material by integrally forming unevenness on the surface.
Moreover, in the said Example, although the one clamping spring 15 was provided in the main body 1, you may make it into two etc., The number can be changed arbitrarily.

  Further, in the above embodiment, the open end sides 16 and 16 of the clamping spring 15 are formed in a substantially semicircular arc shape slightly smaller than the outer diameter of the main body 1, and the central side 18 of the clamping spring 15 is engaged with the main body 1. When engaged with the stop 10, the circumferential ends 2 and 3 of the main body 1 are close to each other. However, when the central side 18 of the clamping spring 15 is engaged with the engaging portion 10 of the main body 1, the circumferential ends 2 and 3 of the main body 1 are close to each other. The shape, in particular, the shape of the open ends 16 and 16 can be changed as appropriate.

It is a perspective view which shows one Example of the sheet | seat fixing tool of this invention, and has shown the state which released the engagement of the clamp spring. It is a front view of the sheet | seat fixing tool of FIG. It is a rear view of the sheet | seat fixing tool of FIG. It is a right view of the sheet | seat fixing tool of FIG. FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2. It is sectional drawing which shows the use condition of the sheet fixing tool of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 5 Protrusion part 10 Locking part 12 Mounting part 15 Tightening spring 20 Anti-slip material

Claims (2)

A sheet fixture for fixing a sheet to a pipe,
A cylindrical main body having a circular arc cross section;
A clamping spring fitted into the outer peripheral surface of the main body so as to bring both ends in the circumferential direction of the main body close to each other,
An anti-slip material provided on the inner peripheral surface of both ends in the circumferential direction of the main body. The clamping spring is formed in an arc shape fitted along the outer peripheral surface of the main body,
The seat fixing according to claim 1, wherein one end portion in the circumferential direction is rotatably held by the main body, and the other end portion in the circumferential direction can be engaged with and disengaged from a locking portion formed in the main body. Ingredients.

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