JP2000201413A - Cabling tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the belt-like body of a cabling tool to become highly rigid when the body is elongated by forming the cross section of a body perpendicular to the lengthwise direction of the body in such a shape that a plurality of crests lies in a row. SOLUTION: A cabling tool 1 is constituted of a lead wire 3, a case 2 which can house the wire 3 in a wound state, and a leader head 4 provided at the front end of the wire 3 and the case 2 has an internal space which can house the wire 3 in the wound state. The lead wire 3 is composed of a thin steel sheet and wound in a laminated state around a rotating shaft 7 while the base- side end of the wire 3 is fixed to the shaft 7. The front end of the wire 3 is protruded from the case 2 through the opening of the case 2 and the wire 3 is drawn out from the case 2 when the front end of the wire 2 is pulled out. When the wire 3 is elongated, however, the cross section of the wire 3 in the direction perpendicular to the lengthwise direction becomes such a shape that a plurality of crests lies in a row. Therefore, the rigidity of the wire 3 can be improved when the wire 3 is elongated, because the wire 3 becomes rigid against a force applied from a direction crossing the elongated direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a line tool,
In particular, the present invention relates to a wiring tool used for passing various wires such as electric wires under the ceiling or under the floor.

[0002]

2. Description of the Related Art Conventionally, there have been proposed various wire passing tools for performing a wire passing operation such as passing an electric cord or the like under a ceiling or under a floor of a building. The applicant of the present invention filed Japanese Patent Application No. Hei 8-2
The wiring tool described in No. 95137 is formed of a tape-like member (hereinafter referred to as a lead wire) that can extend a wiring area such as on a ceiling back surface or a floor bottom surface to a target position.

[0003] According to this, the lead wire has a predetermined rigidity, and the leading end can be reliably reached to the target position by pushing out and moving the through-line area to extend. Then, after reaching, the end of the wire is fixed to the tip of the lead wire, and the wire is pulled and collected, so that the wire is connected to the wire area. The above-mentioned publication describes a lead wire having a cross-sectional shape orthogonal to the longitudinal direction and a single arc-shaped curve. FIG. 8 is a conventional explanatory diagram showing an example of a lead wire described in the above publication.

[0004] According to this, the cross-sectional shape orthogonal to the longitudinal direction of the lead wire is formed so as to be curved so that the central portion forms one arc-shaped curve projecting to one surface side. Thereby, the rigidity in the extended state is ensured without increasing the thickness of the lead wire 30.

When the lead wire 30 is bent toward the center of the radius of the substantially circular curve, the lead wire 30 has a rigidity such that the cross-sectional shape of the bent portion is changed from the circular curve to a straight line. This enables winding with a small diameter,
The size at the time of winding accommodation is reduced.

[0006]

However, the lead wire having the above-mentioned shape has a small thickness for the purpose of downsizing at the time of winding accommodation. Although it has rigidity, it has a low rigidity against external forces in other directions, for example, external forces in a direction intersecting with the elongating direction and external forces in a twisting direction, and has a problem that it is easily bent at an intermediate portion.

In particular, during the extension operation, when the lead wire gets over an obstacle on the surface, for example, another wire already wired or a beam on the back of the ceiling, an external force from a direction other than the extension direction is easily applied. Easy to bend. Also,
For example, if a lead-over attachment with a predetermined height is attached to the end of the lead wire so that it can extend over such obstacles, an external force in the direction twisting the lead wire during extension operation is likely to work. , It is easy to bend in the middle part. In the case where the lead wire is bent in the middle as described above, it is difficult to extend the lead wire by pushing and moving.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a wire tool having higher rigidity during extension operation.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the invention according to the present invention is to hold a belt-like body having a locking portion capable of locking a wire at one end in a wound state, and to feed and rewind the band. In the line tool which can be extended and contracted by
The cross-sectional shape orthogonal to the longitudinal direction of the belt-like body is a shape in which a plurality of chevrons are connected. According to this, since the belt-like body has a cross-sectional shape having a plurality of chevron shapes, a portion that becomes rigid in a direction intersecting with the extension direction increases, and the rigidity further increases.

Therefore, the belt-like body can obtain high rigidity against an external force applied in the extending direction and an external force from other directions. Thereby, it is possible to prevent the middle part of the belt-shaped body from being bent during the extension operation, and it is possible to improve the retention of the extension state. As a result, the strip of the wire passing tool can be reliably extended to the target position, and the wire passing operation can be reliably performed.

[0011]

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an overall explanatory view showing a first embodiment, and FIG. 2 is an explanatory longitudinal sectional view of FIG. In the present embodiment, the wiring tool 1 includes a lead wire (band-like body) 3, a case 2 that can accommodate the lead wire 3 in a wound state, and a lead wire 3.
And a leader head (locking portion) 4 provided at the tip of the head.

The case 2 has an indoor space in which the lead wire 3 can be housed in a wound state, and an opening 5 through which the lead wire 3 can be fed out from the front end side is formed in the front part.
At substantially the center position in the indoor space, a rotating shaft 7 whose both ends are pivotally supported by the side wall surface portion 6 of the case is provided, and one of the side wall surface portions 6a is connected to the rotating shaft 7 to rotate it. A rotary handle 8 is provided.

The lead wire 3 is formed of a thin steel plate, and has a base end fixed to the rotating shaft 7 and wound around the rotating shaft 7 in a stacked state (see FIG. 2). The tip of the lead wire 3 projects out of the case 2 through the opening 5 of the case 2. The lead wire 3 is drawn out of the case 2 by pulling out the tip, and the rotating handle 8
Is wound around the rotating shaft 7 and accommodated in the case 2.

FIG. 3 is an explanatory view showing a part of the reader head 4 shown in FIG. 1 by a longitudinal section. Reader head 4
Is composed of a lightweight synthetic resin material, and has a main body 10 fixed to the distal end of the lead wire 3 by screws, and a main body 1
And an arm 20 whose base end is pivotally supported and whose front end can swing.

As shown in the figure, the main body 10 has an inverted wedge shape in which the height gradually increases as it moves in the extending direction, and the bottom plane portion 11 continuing to the lead wire 3 moves forward from the rear end. Therefore, the upper surface portion 12, the bottom surface portion 11, and the side surface portion 13 closing the space between the left and right ends of the upper surface portion 12 and the bottom plane portion 11 are formed so as to gradually increase in height.
The front part 14 has a convex curved surface shape that protrudes forward as it moves upward from the front end of the front part.

The main body 10 has a bottom flat portion 1 therein.
A predetermined indoor space 15 opening to 1 is formed, and is provided with a moving roller 16 that is provided rotatably in the extension direction and facilitates extension of the lead wire 3.

The arm 20 has an inclined surface portion 21 which is slightly larger than the upper surface portion 12 of the main body 10, left and right side plate portions 22 projecting a predetermined height from one of the left and right ends to the one surface side,
And a base end 23 having a convex curved surface shape which is slightly larger than the front surface portion 14 of the main body 10.
1. It has a size that can accommodate the main body 10 in a space surrounded by the side plate portion 22 and the base end portion 23.

The main body 10 and the arm 20 are pivotally connected to each other at a position on the front end side of the side surface portion 13 and at the base end side of the side plate portion 22 by a bolt shaft 25 that penetrates both in the left-right direction.
By loosening the bolt shaft 25, the leader head 4 is in a folded state in which the distal end 24 of the arm 20 is disposed on the rear end of the main body 10 and the main body 10 is accommodated in the arm 20.
Alternatively, the distal end 24 of the arm 20 can be swung upwardly of the main body 10 so as to be in an expanded state in which the distal end 24 is disposed at a position forward of the front surface portion 14 of the main body 10. Further, the widening angle of the arm 20 can be changed to any angle depending on the situation.

FIG. 4 is an explanatory side view showing a use state when the reader head 4 is in a folded state.
As a case where the reader head 4 is used in a folded state, for example, as shown in the figure, a case where a wire is routed on the floor lower surface 31 of the double floor 30 whose vertical height is low can be considered.

In this case, the base end 23 of the arm 20 is located at the front end in the extension direction. Base end 2 of arm 20
3 has a convex curved surface shape that is gently continued to the protruding end 22a of the side plate portion 22 as shown in the figure, so that even if there is a low obstacle, for example, the existing wiring 32 at a position in front of its extension direction, It can get over and extend further without tripping. In addition, moving roller 1
6 makes the movement of the reader head 4 smoother,
The extension of the lead wire 3 is further facilitated.

FIG. 5 is an explanatory side view showing a use state when the reader head 4 is in the expanded state. When the reader head 4 is used in the expanded state, for example, as shown in the figure, a case where a wire is to be routed on the ceiling back surface 35 having a relatively large space above and a flap receiving material 36 is provided in front of the extension direction. There may be a case where there is a relatively tall obstacle such as.

In this case, as shown in the figure, the leader head 4 is in an expanded state in which the distal end 24 of the arm 20 is located forward of the main body 10 and its height is higher than that of the hitch receiving member 36. Has been adjusted. Therefore, when the tape-shaped lead wire 3 is extended and the leader head 4 is advanced forward in the extending direction, the obstruction can be overcome by the inclined surface 21 of the arm 20.

Next, the shape of the lead wire 3 which is a characteristic feature of the present invention will be described. FIG. 6 is an explanatory diagram showing a cross-sectional shape orthogonal to the longitudinal direction of the lead wire 3 in the present embodiment. FIG. 3A shows a cross-sectional shape of the lead wire 3 in an extended state, and FIG. 3B shows a cross-sectional shape of the lead wire 3 in a wound state.

In the extended state, as shown in FIG. 3A, the cross-sectional shape of the lead wire 3 has a radial center at a position above the upper surface 3a of the lead wire 3 and a central portion protrudes downward. And two arc curves are connected and arranged in parallel. As a result, a top apex 3b, which is located at substantially the same height as the both ends 3c and protrudes upward at an angle, is formed at a substantially central position between the two ends 3c of the lead wire 3, and the top of the arc curve is formed. A lower top 3d is formed at the lower end.

With such a cross-sectional shape, 2
A plurality of portions of the two arc-shaped curved portions and the top 3b connecting them are rigid against a force in a direction intersecting with the extension direction, and the rigidity is further increased by increasing the number thereof. Therefore, it is possible to improve the rigidity of the lead wire 3 in the extended state, and it is possible to prevent bending at an intermediate portion.

Then, when wound and stored in the case 2,
The cross-sectional shape of the lead wire 3 is substantially linearly deformed as shown in FIG. Therefore, the rigid portion disappears and can be wound with a small diameter. Thereby, the size of the case 2 (see FIG. 2) to be accommodated in the radial direction can be reduced.

FIG. 7 illustrates another embodiment of the lead wire 3. In the embodiment shown in FIG. 4A, the cross-sectional shape perpendicular to the longitudinal direction of the lead wire 3 is an arc curve having a radial center above the upper surface 3a of the lead wire 3 and a central portion projecting downward. In parallel with each other. According to this, since the number of rigid portions increases, the rigidity of the lead wire 3 in the extended state can be similarly improved, and bending at an intermediate portion can be prevented.

In FIG. 2B, the shape of the top 3b is an arc curve having a radial center below the lower surface 3e of the lead wire 3 and a central portion protruding upward. Therefore, it forms a substantially corrugated plate shape in which arc curves protruding upward and arc curves protruding downward are alternately and continuously arranged. According to this, since the number of arc-curved portions increases, the number of rigid portions increases, and similarly, the rigidity in the extended state can be improved, and bending at an intermediate portion can be prevented.

FIGS. 3C and 3D show that the cross section of the lead wire 3 has a substantially zigzag shape in which a plurality of continuous upper and lower vertices are connected by a straight line at predetermined intervals in the left-right direction. . Here, the upper top 3b projects upward at an angle, and the lower top 3d projects downward at an angle. Therefore, there are a plurality of rigid portions, and similarly, the rigidity of the lead wire 3 in the extended state can be improved, and the bending of the lead wire 3 in the middle can be prevented.

Therefore, in any of the above-described embodiments, the rigidity in the extended state can be improved.
Can be reliably reached to a target location, and a wire passing operation can be reliably performed.

The present invention is not limited to the above-described embodiments and examples, and various changes can be made within the gist of the present invention. For example, if the cross-sectional shape of the lead wire can form a plurality of chevron shapes, the shape may be a combination of an arc curve and a straight line portion.

[0033]

As described above, according to the wire tool according to the present invention, the belt-shaped body can have higher rigidity in the extended state. Therefore, it is difficult to bend even when an external force is applied from a direction other than the extension direction, and the retention of the extension state can be improved. As a result, the strip of the wire passing tool can be reliably extended to the target position, and the wire passing operation can be reliably performed.

[Brief description of the drawings]

FIG. 1 is an overall explanatory diagram showing a first embodiment.

FIG. 2 is an explanatory longitudinal sectional view of FIG. 1;

FIG. 3 is an explanatory diagram showing a part of the reader head shown in FIG. 1 in a vertical section.

FIG. 4 is an explanatory side view showing a use state when the reader head is in a folded state.

FIG. 5 is an explanatory side view showing a use state when the reader head is in an expanded state.

FIG. 6 is an explanatory diagram showing a cross-sectional shape orthogonal to a longitudinal direction of a lead wire according to the present embodiment.

FIG. 7 illustrates another embodiment of a lead wire.

FIG. 8 is a conventional explanatory diagram showing an example of a conventional lead wire.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Communication tool 2 Case 3 Lead wire (band) 4 Leader head (locking part) 5 Opening

Claims (6)

[Claims] 1. A wire-forming tool which has an end portion having an engaging portion capable of engaging a wire at its one end and which can be stretched and contracted by being fed and unwound in a wound state. A cross-sectional shape to be formed is a shape in which a plurality of chevrons are connected. 2. The wire passing tool according to claim 1, wherein the chevron has a square top. 3. The tool according to claim 1, wherein a top of the chevron has a substantially arc shape. 4. The tool according to claim 1, wherein the angle is formed so that an inclined portion of the angle is substantially linear. 5. The wire passing tool according to claim 1, wherein the chevron is formed so that an inclined portion of the chevron has a substantially arc shape. 6. The wire passing tool according to claim 1, wherein the band-shaped body has elasticity such that its cross-sectional shape is deformed into a substantially linear shape in a wound state.