JPS5846489Y2 - Instruments for linear bodies - Google Patents

Description

[Detailed description of the invention] The present invention relates to a device for wire-shaped objects such as branch lines, cables, and conductors. Disposed on the linear body in surrounding engagement with the linear body to insulate it from objects.

More specifically, the present invention provides an improved device that cannot be manually removed from the wire without the use of tools.

Tubular protective elements arranged on suspended linear bodies are known.

For example, U.S. Pat. No. 3,302,346 shows an elongated tubular guard having an integral helix surrounding and engaging a wire to hold the guard in place.

However, such integral fiber protection members have several drawbacks.

One is that a child or other person can relatively easily remove the protective member from the wire by prying the device open.

The present invention seeks to eliminate various problems associated with such conventional devices by using a locking device.

Thus, the locking device of the present invention is disposed at one end of the tubular protection member and serves to securely hold the tubular protection member in a mounted arrangement on the linear body.

Moreover, while this locking device can be easily and quickly engaged with the linear body when the protective member is mounted on the linear body, it is difficult to place the locking device in its final locking position. For example, these locking members and protection members cannot be removed by hand without the use of tools.

In this manner, the improved device of the present invention is substantially tamper proof;
The harm caused by this unauthorized modification can be avoided.

It should be noted that the helical linear locking device may be made separately and then fixed at one end to the tubular protective or guiding element.

Embodiments of the present invention will be described below with reference to the drawings.

Please refer to FIG.

The improved device, designated generally at 10, includes a tubular member 12 having a first slit 16 extending the entire length thereof and a parallel second slit extending only a portion of the length between the tubular members. 18, forming a portion or strip 20 which is integral with the tubular member at one end and free at the other end.

This strip 20 is adapted to be flexibly displaceable in the radial direction between the gap or gap formed by the slits 16 and 18.

The strip 20 is also pre-formed in a helical shape with a predetermined inner diameter and pitch length, so that it can be wrapped around the wire in a tight engagement manner. There is.

The end 24 of the tubular member 12 in the direction in which the pre-helical portion or strip 20 extends is provided with a locking device, generally indicated at 30, which includes:
When engaged, it serves to hold the tubular member 12 in a secure device position on a suitable wire.

According to one embodiment of the invention, as clearly shown in FIG. It has one end and a free end extending from it.

The band 31 also has a fastening element 34 fixed to its free end and an aperture 36 spaced apart from this by a distance, which distance the band 31 wraps around the tubular member 12 in its circumferential direction. The apertures 36 align with and receive the fastening elements 34 when closed, such that the tubular member 12 does not expand beyond a predetermined amount thereafter.

Preferably, the band 31 is secured to the inner surface of the tubular member 12 adjacent the slit 16 by rivets 32.

Preferably, the fastening element 34 has a head having the following dimensions.

That is, once the fastening member 34 is inserted into the hole 36, the fastening member should have a head large enough to be pushed through the hole 36 to lock it in place.

Of course, other white iron devices that do not loosen may also be used.

The improved device of the invention is characterized by simplicity, economy, reliability and especially ease of installation.

4 and 5 illustrate the method of mounting improved device 10 when used in conjunction with branch line 40. FIG.

Typically, branch wires 40 are used in a tension-loaded manner to help support a sentence structure, not shown.

At the end of the branch line 40 opposite the sentence structure, a fastening device or peg 42 is used to tension the branch line.

The guy wire 40 is securely secured to the fastener 42 by a tie end 44 that is looped through an eye of the fastener 42.

Reference is now made to FIGS. 4, 5, and 6.

These drawings depict various stages of installation of the improved device 10.

The first step is to place the end 22 of the tubular member 12 over the line 40 by sliding it through the slit 16.

Tubular member 12 is then pushed diagonally so that wire 40 extends through the space between slits 16 and 18.

A pre-spiralized strip 20 is then wrapped around a corresponding portion of the wire 40 so that the wire 40 extends through the strip.

Once wrapping is complete, the end 24 of the tubular member 12 is pushed in the direction of the arrow, driving the wire 40 and the helically shaped strip 20 into the interior of the tubular member 12.

In this manner, the branch wires 40 are placed in substantially coaxial alignment in the improved device.

In a preferred form, the gap or space between slits 16 and 18 is substantially narrower than the diameter of wire 40 and at least less than the total diameter of wire 40 including strip 20 wound over wire 40. The width is considerably narrower.

Therefore, in order to push wire 40 into or remove wire 40 from tubular member 12, the sides of the tubular member must be expanded or expanded considerably.

This means that once the wire 40 is positioned within the length of the tubular member 12, the wire 40 cannot be inadvertently pulled out of the tubular member 12.

Once the tubular member 12 has been installed in coaxial alignment on the guy wire 40, the locking device 30 is secured to the tubular member as shown in FIG.

This is accomplished by wrapping a long strip 31 circumferentially around the end 24 of the tubular member 12 before the tubular member 12 is in an inflated condition.

In this state, the fastening element 34 can be easily fastened into the hole 36.

Device 10 is then placed in its final locked position by sliding tubular member 12 and end 24 into locking end 44.
The fastening device or peg 42 is placed adjacent the knobby end so as to extend over the branching portion of the peg 42 .

This is possible because the compressive force on the pre-spiralized strip 20 tends to slightly enlarge its inner diameter, making it easier to slide the strip 20 in the direction towards the end 24. This is because it can be forced.

In this manner, a force is applied to end 24 which causes tubular member 12 to expand along snot 16.

However, the band 31 of the locking device limits this expansion;
This creates tension concentrated around the fastening element 34 and hole 36.

Furthermore, it is very difficult to slide the tubular member 12 in the opposite direction away from the tie end 44 and peg 42.

This is because the tension on the pre-spiralized strip tends to reduce its inner diameter and increases the gripping force on the branch wire 40.

Thus, the holes 36 can be hooked if present.

As has been made clear, while the improved device of the present invention can be easily and quickly installed onto a wire, it is extremely difficult to remove from the wire without tools.

FIGS. 8 and 9 show other embodiments of the present invention.

In this embodiment, the pre-spiralized strip 20
' is fastened to the inside of the tubular member 12 by suitable fastening means such as rivets 21.

This embodiment of the device provides additional advantages. That is, the pre-helical strip 20' can be made of a different material than the material of the tubular member 12.

Additionally, positioning the pre-helically formed strip 20' within the tubular member 12 to provide a significantly improved coaxial alignment between the wire and the instrument allows the strip 20' to be secured to the tubular member 12. The stress and potential for structural fatigue at the ends of the pre-spiralized strip 20' can be reduced.

Also, the pre-spiralized strip 2 of the embodiment of FIG.
0 may also be made of a material different from that of the tubular member 12.

To this end, the helical strip 20 is positioned as shown in FIG. 1, but rather than as an integral part of the tubular member, it is attached to the tubular member by suitable fastening means.

Of course, these modified devices function and are worn in the same manner as the improved device of FIG.

Although the improved device of the present invention may be constructed from plastic, metal, or other flexible materials, it is preferably constructed from polyethylene resin material.

A particularly preferred material combination is polyethylene for the tubular member 12 and polyvinyl chloride for the pre-spiralized strip 20' shown in FIGS. 8 and 9.

This combination allows the individual components of the improved device of the invention to be constructed of materials that are particularly suitable for the particular function to be accomplished by each component.

Additionally, although rivets are used in one embodiment of the invention to securely secure strap 31 to tubular member 12, any other suitable fastening means such as stables, bolts, spring clips, etc. A method may also be used.

Similarly, the bands 31 and/or the fastening elements 34 are of sufficient strength and reliability to maintain their structural integrity when subjected to the tension and shear forces encountered when they are used. They may be made of aluminum, steel, plastic, or other materials, as long as they are present.

Of course, those skilled in the art will readily appreciate that various changes and modifications to the preferred embodiments disclosed herein may be made.

Such variations and modifications can be made without departing from the scope or gist of the present invention or without losing the advantages of the present invention.

The embodiments of the present invention are as follows.

(1) Protection according to the registered claims, in which the pre-helically formed member consists of an integral part of the wall of a tubular member, such that this integral part is defined by a first and a second slit. Ingredients.

(2) a pre-helically formed member is provided within the tubular member and secured thereto, thereby providing improved coaxial alignment between the wire and the tubular member; Protective equipment as stated in the registered claims made.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an improved device of the present invention having a helical grasping device at one end and a suitable locking device at the other end. FIG. 2 is an enlarged partial cross-sectional end view taken along line 2--2 of FIG. 1, showing the improved device of the present invention with a locking device in an open or unlocked condition. FIG. 3 is an enlarged cross-sectional perspective view taken along line 3-3 in FIG.
Figure 3 shows the end of the improved device of the invention opposite the locking device in more detail; Figures 4 and 5 show the improved device of the present invention being mounted on a wire. FIG. 6 shows the improved device of the present invention in its final locked position after installation is complete. FIG. 7 is an enlarged sectional view taken along line 7-7 in FIG. 6. FIG. 8 is a side view showing another embodiment of the improved device of the present invention. FIG. 9 is an enlarged perspective view taken along line 9--9 of FIG. 7 detailing an alternative method of securing the helical gripping device to the tubular member. 10... Instrument, 12... Tubular member, 1
6.18...slib), 20.20'...
... Strip, 21 ... Rivet, 22.24
...End portion, 30...Lock device, 31.
...Obi, 32...Rivet, 34...
... Fastening element, 36 ... Hole, 40 ...
・Branch line, 42...Piece, 44...Pull°
Retained end.

Claims (1)

[Claims for Utility Model Registration] A first slit 16 that is arranged substantially coaxially on a linear body 40 selected from a branch wire, cable, conductor, or equivalent thereof and extends over its entire length; a second slit 18 extending only over a length that substantially matches the length of the member formed in the shape, and the first and second slits flexibly arrange the member previously formed in the helical shape as described below. A tubular member 12 forming a space for
fixed to one end of the tubular member, extending vertically inside the tubular member in a first direction, and engaged around the linear body 40 in a slidable relationship in the first direction; A member 20 previously formed in a helical shape, which has a length of pitch that can be wound in a manner such that the member 20 can be wound in a pitch such that the part extending in the opposite direction cannot slide on the linear body 40; a locking device 30 which is arranged only at the end of the tubular member in the direction in which the member formed in the linear body extends and locks the tubular member in the position where the linear body is finally installed; An element for preventing expansion around the tubular member when the tubular member is subjected to an expansion force in its final installation position, comprising an elongated strip 31 having one end fixed to the tubular member and a free end; a fastening element 34 at the free end and a fastening element 34 near the fixed end of the elongated end so as to align with and engage the fastening element when the elongate strip is wrapped around the tubular member in an unexpanded state. a circumferential anti-expansion element comprising a hole 36 provided with a branch line;
Protective equipment for linear bodies selected from cables, conductors and their equivalents.