JP2006153067A - Pipe guard - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive pipe guard capable of corresponding to change of diameter of a through hole, preventing it from coming off, and protecting a wire and a pipe securely and having a simple structure. <P>SOLUTION: This pipe guard is formed into a cylindrical body by winding a steel plate and has spring property, and end parts in the peripheral direction are slidably overlapped. In a normal condition, end parts 2, 3 in the peripheral direction are mutually overlapped, and its outside diameter is slightly larger than diameter of the through hole 6 in which they are inserted. A protruding bar 4 for preventing coming-off and reinforcing or a projection may be provided in a part except parts close to the end parts 2, 3 in the peripheral direction on an outer peripheral face of the cylindrical body. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a protective pipe that protects wiring and piping from damage caused by nailing.

In wooden houses, notches and through-holes are formed in components such as stud materials (members that become pillars and horizontal members in the 2 × 4 method), trunk edges, studs, etc. In some cases, pipes for air conditioners or conductive wires of electrical equipment are passed.
However, the tip of the nail that is driven in to secure the wall material to the component material may reach the conductive wires and pipes and damage them, which may cause serious accidents such as water leakage and leakage. .
Conventionally, a through-hole or a notch portion through which a pipe or a conductive wire has been passed through a component has been attached with a band (steel plate) as a pipe guard on the surface of the nail.
However, when nailing the wall material, the pipe guard part rises with the thickness of the strap, which hinders the installation of the wall material. In addition, the nail may be driven into the gap between the straps mounted side by side, and the tip that enters the inside may damage the pipe or the conductive wire.

  Some pipe guards have a cylindrical shape (Patent Documents 1 and 2), and are inserted into the through holes of the constituent members. In this type, since the pipe guard does not appear on the surface of the constituent material, there is little trouble in mounting the wall material. However, while it is necessary to install the pipe guard so that it does not rattle or come out of the through hole of the stud material, it is necessary to easily attach the pipe guard to the through hole. Therefore, conventionally, the cylindrical pipe guard is cut so as to be closed in the circumferential direction, and is closed into a cylindrical shape when inserted and inserted into the through hole. Then, it is engaged with the stud material by cutting and raising, and is prevented from coming off.

Japanese Patent Laid-Open No. 11-205946 JP 2002-247736 A

The conventional pipe-shaped pipe guard is cut in the axial direction, so that it fits snugly in accordance with the diameter of the through-hole, and can be securely retained by cutting and raising. A hole remains after the cut and raised portion, and it is necessary to close the hole. Further, the attachment by cutting and raising has a one-way retaining function, and it is necessary to consider the direction depending on the place to be attached.
It is an object of the present invention to provide an inexpensive pipe guard that has a simple structure and can be securely attached to a through-hole of a component material without being pulled out due to the strong springiness of the tubular pipe guard itself. And
The above-described conventional cylindrical pipe guard has a closed cylindrical shape because a slit is formed at a base point of deformation in the closing direction so that the closing operation when mounting is easy. The spring property (spring property in the circumferential direction) of returning to the opening direction is very weak.

In the present invention, a cylindrical body with a simple structure including a steel plate is used as a pipe guard. Since the steel plate inherently has springiness, the structure in which the steel plate is wound exhibits strong springiness in the circumferential direction of the cylindrical body. Therefore, when this is inserted into the through hole of the component material, if it is pushed in such a way that its outer diameter is somewhat reduced, the cylindrical body tries to expand due to its springiness and fits exactly into the through hole, and is strong A reliable retaining function is demonstrated by the frictional force with the component due to the spring property.
When winding the steel plate, there is a gap between the ends in the winding direction, and it is meaningless if the nail is driven from here, so the ends in the circumferential direction are slidably overlapped with the cylindrical body To do. Furthermore, in order to strengthen the retaining function, a retaining protrusion or protrusion may be provided along the circumferential direction of the cylindrical body. The protrusions or protrusions are preferably formed excluding a portion where the steel plates are superposed on the outer peripheral surface of the cylindrical body in order to minimize the gap in which the nail may enter.

The structure is simple and can be manufactured at low cost. It can be attached simply by pushing it into the through hole of the component material, and a strong retaining function is exhibited by the strong spring property in the circumferential direction. The retaining function has no direction. The cylindrical body in which the steel plate is wound has no gap in the nail driving direction, and since the nail does not penetrate the steel plate, a complete protection function is exhibited as a pipe guard.
Due to the strong spring property, it is possible to cope with a change in the diameter of the through-hole due to the wet and dry of the constituent material.

1 to 5 show a first embodiment of the present invention.
As shown in FIGS. 1 to 3, the pipe guard 1 is basically a cylindrical body in which a steel plate having a thickness of 1.2 to 1.6 mm is wound and the circumferential ends 2 and 3 are overlapped. The circumferential ends 2 and 3 are overlapped without being fixed, and can slide freely. The overlapping width is about 4 to 5 mm. Further, the outer diameter of the cylindrical body is 31 mm (31 mm and 24 mm) in this embodiment, and has a strong spring property in the circumferential direction due to the spring property that the steel plate originally has. Thereby, the external shape of a cylindrical body can be changed elastically.

A plurality of protrusions 4 extending in a direction perpendicular to the circumferential end portions 2 and 3 are press-formed in advance on the steel plate before being wound, except for the portions near the circumferential end portions 2 and 3. Therefore, when the pressed steel plate is rolled up, a plurality of retaining reinforcing protrusions 4 are formed along the circumferential direction on the outer peripheral surface of the pipe guard 1 except for the portions near the circumferential ends 2 and 3.
In this embodiment, the protrusion 4 is continuous over the entire length in the circumferential direction, and in consideration of widening the overlapping width by sliding the circumferential ends 2 and 3, particularly the inner circumferential end. In the vicinity of 3, a region without the protrusion 4 is formed over a relatively wide range (about three times the overlap width in the normal state).
In this embodiment, three types of pipe guards 1 (a) 45 mm, (b) 90 mm, and (c) 130 mm are prepared (FIG. 1). The number of the protrusion reinforcing reinforcements 4 also increases or decreases depending on the length of the pipe guard 1, (a) two pipe guards 1, (b) three pipe guards 1, (c) pipe guards Four are formed in 1.

4 and 5 show a usage example in which the pipe guard 1 is attached to the vertical frame 5 (component) of the wall frame.
A through hole 6 is formed in the wiring portion of the vertical frame 5. The diameter of the through hole 6 is slightly smaller than the 31 mm (or 24 mm) which is the outer diameter of the pipe guard 1 in a normal state.
The pipe guard 1 is pressed and contracted in the radial direction to increase the overlapping width of the circumferential end portions 2 and 3, and is passed through the through hole 6 in a state of being narrower than the diameter of the through hole 6. Next, when the pipe guard 1 is released, due to the springiness in the circumferential direction, the overlapping width of the circumferential end portions 2 and 3 is reduced, and a restoring force that tries to spread in the radial direction works. As a result, the pipe guard 1 is pressed against the inner peripheral surface of the through-hole 6 and is reliably held in the through-hole 6 in combination with the function of preventing the protrusion 4 from coming off.
The pipe guard 1 is wired through the conductive wire 7.

6 and 7 show a second embodiment.
A step portion 8 having a diameter smaller than that of the other portion is formed at the inner circumferential end 3. The width of the step portion 8 is wider than the overlap width in the normal state between the circumferential end portions 2 and 3, and the circumferential end portion 2 is overlapped on the outer surface of the step portion 8 to form a cylindrical body.
The three reinforcing reinforcing protrusions 4 are arranged in the circumferential direction, and are formed at a plurality of positions in the axial direction. The ridges 4 are even shorter and may be warped.
Other configurations and usage methods are the same as those in the first embodiment.
In this configuration, since there is no step due to polymerization on the outer periphery of the cylindrical body, the contact area between the outer peripheral surface of the cylindrical body and the inner surface of the through hole is large, and the crimping due to the spring property is efficiently exhibited.

In addition, the pipe guard of this invention is not limited to the said Example.
For example, the reinforcing reinforcing protrusions 4 may be formed at the locations of the stepless overlapping portions 2 and 3.
The dimensions of the pipe guard and the number of protrusions or protrusions can be changed as appropriate.
In addition, pipe guards may be mounted on the upper and lower frames of the wall frame, studs, trunk edges, etc., and the duct guard, water pipe, hot water supply pipe, drain pipe, electric pipe etc. are stored in the pipe guard. It may be.

The perspective view of the pipe guard which shows Example 1. FIG. The side view of the pipe guard which shows Example 1. FIG. 1 is an end view of a pipe guard showing Example 1. FIG. The longitudinal cross-sectional view which shows the usage example of a pipe guard. The cross-sectional view which shows the usage example of a pipe guard. The side view of the pipe guard which shows Example 2. FIG. The end view of the pipe guard which shows Example 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pipe guard 2, 3 Circumferential edge part 4 Protrusion for reinforcement prevention 5 Vertical frame 6 Through-hole 7 Conductive wire 8 Step part

Claims (3)

  It is a pipe guard that is inserted into the through hole of the constituent material and accommodates and protects conductive wires and pipes inside, and is a cylindrical body in which steel plates are wound and the circumferential end portions are slidably overlapped, A pipe guard having a spring property in a circumferential direction and having an outer diameter slightly larger than a diameter of the through hole.   The pipe guard according to claim 1, wherein a protrusion or protrusion that reinforces the retaining member is provided along a circumferential direction of the cylindrical body. The pipe guard according to claim 1 or 2, wherein the protrusions or protrusions are formed on a portion of the outer peripheral surface of the cylindrical body excluding the overlapped portion of the steel plate.

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