JP2020187476A - Antitheft tool - Google Patents

Abstract

To provide an antitheft tool for a cable drum that is not easily stolen.SOLUTION: An antitheft tool according to an embodiment prevents a cable drum from being stolen. The antitheft tool comprises two plug parts inserted into respective two shaft through-holes of the cable drum; a cylindrical member for supporting the two plug parts, that is provided between the two plug parts; and a first stopper provided so as to hold the two plug parts inside the two shaft through-holes, after inserting the two plug parts into the two shaft through-holes. The cylindrical member is freely stretchable along between the two shaft through-holes.SELECTED DRAWING: Figure 1

Description

An embodiment of the present invention relates to an anti-theft device for a cable drum in which an electric wire or the like is wound and stored.

In electrical work of plants and the like, electric wires and optical cables used for power lines and control lines may be wound around a cable drum, temporarily placed at the site, and stored.

When the cable drum is sheet-cured and stored in the temporary storage section, for example, a chain may be connected to the cable drum and tied up for storage in order to prevent the electric wires, etc. from being stolen together with the cable drum. ..

However, even if they are connected by a chain, the connected chain may be cut, and the jack mandrel may be passed through the mandrel through hole of the cable drum and carried out.

JP-A-2007-137580

The embodiment provides an anti-theft device for a cable drum that is not easily stolen.

The anti-theft device according to the embodiment prevents the cable drum from being stolen. The anti-theft device includes two plugs that are inserted into the two mandrel through holes of the cable drum, a tubular member that is provided between the two plugs and supports the two plugs, and the above. After inserting the two plugs into the two mandrel through holes, a first stopper provided so as to hold the two plugs in the two mandrel through holes is provided. The tubular member can be freely expanded and contracted along the space between the two mandrel through holes.

In the present embodiment, an anti-theft device for a cable drum that is not easily stolen is realized.

It is a schematic perspective view which illustrates the anti-theft device which concerns on embodiment. It is a schematic front view which illustrates the anti-theft device which concerns on embodiment. It is a schematic perspective view for demonstrating the operation of the anti-theft device of embodiment. It is a schematic perspective view which illustrates a part of the anti-theft device of embodiment. FIG. 5 is a schematic cross-sectional view illustrating a part of the anti-theft device of the embodiment. 6 (a) to 6 (c) are schematic side views illustrating the operation of the anti-theft device of the embodiment. 7 (a) to 7 (c) are schematic perspective views illustrating how to use the anti-theft device of the embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The drawings are schematic or conceptual, and the relationship between the thickness and width of each part, the ratio of the sizes between the parts, and the like are not necessarily the same as the actual ones. Further, even when the same parts are represented, the dimensions and ratios may be different from each other depending on the drawings.
In addition, in the present specification and each figure, the same elements as those described above with respect to the above-mentioned figures are designated by the same reference numerals, and detailed description thereof will be omitted as appropriate.

FIG. 1 is a schematic perspective view illustrating the anti-theft device according to the embodiment.
FIG. 2 is a schematic front view illustrating the anti-theft device according to the embodiment.
As shown in FIGS. 1 and 2, the anti-theft device 10 for the cable drum of the embodiment includes plug portions 11 and 13, an outer cylinder 12, an inner cylinder 14, and inner stoppers 15 and 16. The anti-theft device 10 may further include an outer stopper 17. The anti-theft device 10 is used by being inserted into the mandrel through holes 4a and 4b provided in the side plates 2a and 2b of the cable drum 1, respectively.

The side plates 2a and 2b of the cable drum 1 are circular plate-like bodies, and mandrel through holes 4a and 4b are provided substantially in the center of the circle. A winding core portion 6 is provided between the side plates 2a and 2b. The winding core portion 6 is a cylindrical member, and is connected to each other so that the circular shape of the cylinder of the winding core portion 6 and the circular shape of the side plates 2a and 2b are substantially aligned with each other. Each member of the cable drum 1 is, for example, wood, synthetic resin, or the like.

As will be described in detail later, in the anti-theft device 10 of the cable drum 1, after the plug portions 11 and 13 are inserted into the mandrel through holes 4a and 4b of the side plates 2a and 2b, the inner stoppers 15 and 16 are inserted into the mandrel through holes 4a, Stretch in the radial direction of 4b. As a result, the anti-theft device 10 can be prevented from easily falling out of the mandrel through holes 4a and 4b.

Further, the outer stopper 17 is extended in the radial direction of the mandrel through holes 4a and 4b. As a result, the anti-theft device 10 can be made difficult to be pulled out from the mandrel through holes 4a and 4b.

The plug portions 11 and 13 are, for example, cylindrical or columnar members. The plug portions 11 and 13 are preferably inserted into the mandrel through holes 4a and 4b of the cable drum 1, and when the plug portion 11 is inserted, another mandrel is inserted in the gap between the plug portion 11 and the mandrel through holes 4a and 4b. It has a diameter that cannot be passed through. The diameter of the mandrel through holes 4a and 4b is, for example, about 100 mm, and the diameter of the plug portion 11 can be about 80 mm to 90 mm. The shapes of the stoppers 11 and 13 are not limited to a cylindrical shape, and may be a polygonal tubular shape such as a hexagon.

One plug portion 11 is provided with an inner stopper (first stopper) 15 on the inner side and an outer stopper (second stopper) 17 on the outer side. The other plug portion 13 is provided with an inner stopper 16 inside. Here, when the anti-theft device 10 is inserted into the mandrel through holes 4a and 4b of the cable drum 1, the side exposed from the mandrel through holes 4a and 4b is referred to as the outside, and the side not exposed is referred to as the inside.

The outer stopper 17 is provided with a wire through hole 20 for connecting a wire to be fixed to the installation location of the cable drum 1.

The plug portion 11 is inserted into the mandrel through hole 4a to extend the inner stopper 15 and the outer stopper 17 so that the plug portion 11 does not come out of the mandrel through hole 4a. Since the depth of the mandrel through hole 4a is equal to the thickness of the side plate 2a and the thickness of the side plate 2a is, for example, about 50 mm to 100 mm, the length of the plug portion 11 is preferably 100 mm or more. The plug portion 13 can also have the same length as the plug portion 11.

One end of the outer cylinder (cylindrical member) 12 is connected to the inside of the plug portion 11. The outer cylinder 12 is a cylindrical body having a diameter smaller than the diameter of the plug portion 11. An inner cylinder 14 is inserted into the other end of the outer cylinder 12. The inner cylinder (cylindrical member) 14 is a cylindrical body having an outer diameter slightly smaller than the inner diameter of the outer cylinder 12. One end of the inner cylinder 14 is connected to the inside of the plug portion 13.

For example, the inner diameter of the outer cylinder 12 is constant. The outer diameter of the inner cylinder 14 is tapered so that the outer diameter increases from one end to the other end. Therefore, the outer cylinder 12 and the inner cylinder 14 can be freely expanded and contracted along the insertion direction. The taper attached to the inner cylinder 14 prevents the inner cylinder 14 from being pulled out from the outer cylinder 12 even if the outer cylinder 12 and the inner cylinder 14 are sufficiently extended.

Even when the inner diameter of the outer cylinder 12 is set to decrease from one end to the other end and the outer diameter of the inner cylinder 14 is kept constant, it can be expanded and contracted and can be prevented from being pulled out as described above. The outer cylinder 12 and the inner cylinder 14 are not limited to the above-mentioned taper as long as they can be expanded and contracted in the stretching direction and can be prevented from being pulled out, and may be used by other means. For example, a female thread may be cut on the inside of the outer cylinder 12 and a male screw may be cut on the outside of the inner cylinder 14 so that the length can be adjusted.

The operation of the anti-theft device 10 of the embodiment will be described.
FIG. 3 is a schematic perspective view for explaining the operation of the anti-theft device of the embodiment.
As shown in FIG. 3, in the anti-theft device 10, the inner diameter of the outer cylinder 12 is set to be slightly larger than the outer diameter of the inner cylinder 14, so that the outer cylinder 12 and the inner cylinder 14 can be freely extended along the extending direction. It can be expanded and contracted. When the inner cylinder 14 is inserted deepest into the outer cylinder 12, the total length of the anti-theft device 10 is L1. On the other hand, when the inner cylinder 14 is pulled out most from the outer cylinder 12, the total length of the anti-theft device 10 is L2 (> L1). That is, the anti-theft device 10 can freely expand and contract the range from the length L1 to the length L2.

As described above, the inner cylinder 14 is prevented from being pulled out from the outer cylinder 12 when the length of the anti-theft device 10 becomes L2 by the pull-out preventing means by a taper or the like. Therefore, it is possible to prevent the inner cylinder 14 from falling off from the outer cylinder 12.

The cable drum 1 has various types of distances between the side plates 2a and 2b, depending on the type of cable, the winding amount of the cable, and the like. In the anti-theft device 10 of the embodiment, the length of the anti-theft device 10 can be adjusted according to the distance between the side plates 2a and 2b by expanding and contracting the outer cylinder 12 and the inner cylinder 14.

FIG. 4 is a schematic perspective view illustrating a part of the anti-theft device of the embodiment.
In FIG. 4, the plug portions 11 and 13 are enlarged and shown in order to explain the operation of the anti-theft device 10.
In the figure on the left of FIG. 4, the plug portion 11 is shown. An outer stopper 17, a stopper expansion / contraction mechanism 18, and a handle 19 are provided on the outside of the stopper 11. By turning the handle 19 in the direction of the arrow, the contracted outer stopper 17 can be extended in the direction of the arrow. The stopper expansion / contraction mechanism 18 may be provided with a lock key for fixing the outer stopper 17 in an extended state.

An inner stopper 15 is provided inside the stopper 11. The stopper portion 11 also serves as a handle for expanding and contracting the inner stopper 15. The stopper 11 is rotatable with respect to the outer cylinder 12, and the inner stopper 15 can be extended by turning the stopper 11 with respect to the outer cylinder 12 in the direction of the arrow. Similarly, for the inner stopper 16 of the stopper portion 13, the inner stopper 16 can be extended by turning the stopper portion 13 with respect to the inner cylinder 14 in the direction of the arrow.

FIG. 5 is a schematic cross-sectional view illustrating a part of the anti-theft device of the embodiment.
A storage cover 11a is provided on the plug portion 11, and FIG. 5 shows a storage portion 11b provided in the storage cover 11a.
As shown in FIG. 5, the plug portion 11 has a storage portion 11b opened in the plug portion 11, and the transport detection means is housed in the storage portion 11b. The transport detecting means is a means for detecting that the anti-theft device 10 has been transported unintentionally by the installer after being installed in a temporary storage place or the like. The transport detecting means is, for example, an inclination sensor 30. The tilt sensor 30 is fixed in the storage portion 11b. A storage cover 11a is provided in the opening of the storage portion 11b in order to prevent the tilt sensor 30 from being exposed to the outside or falling off.

When the tilt sensor 30 detects a tilt angle equal to or greater than a predetermined tilt angle or a fluctuation in the tilt angle, it generates an alarm signal and emits an alarm sound based on the warning signal. It may be a sensor or the like that generates an alarm signal by a predetermined vibration and emits an alarm sound. The installation state may be set or canceled by a remote controller or the like separate from the tilt sensor 30 or the like.

If the anti-theft device 10 is inserted through the cable drum 1 but is stolen, the cable drum 1 is moved by being rolled from a stationary state or the like. At that time, the tilt sensor 30 generates an alarm signal and emits an alarm sound when it detects that the tilt angle has changed from the initial stationary tilt angle to a predetermined tilt angle or changes in the predetermined tilt angle. Therefore, when the theft is interrupted or stopped, or when there is an observer, the observer can recognize the occurrence of the theft or the like.

The storage portion 11b may be provided with transportation detection means in place of the inclination sensor 30 or together with the inclination sensor 30. The transportation detection means is, for example, a GPS oscillator. The GPS oscillator may be stored in a storage unit provided separately from the storage unit 11b.

For example, a GPS receiver is installed at the observation post. Since the anti-theft device 10 containing the GPS oscillator transmits the tracking radio wave of the GPS oscillator, the stolen position of the cable drum 1 can be specified by receiving the tracking radio wave by the GPS receiver.

6 (a) to 6 (c) are schematic side views illustrating the operation of the anti-theft device of the embodiment.
6 (a) to 6 (c) show specific configuration examples of the outer stopper 17.
In FIG. 6A, the outer stopper 17 is in a contracted state. The stopper expansion / contraction mechanism 18 is a mechanism that performs expansion / contraction operation using a crank.

As shown in FIG. 6A, the stopper expansion / contraction mechanism 18 includes slide shafts 17a and 17b and rotary shafts 18a and 18b. The rotating shafts 18a and 18b are arranged substantially in parallel, and slide shafts 17a and 17b are rotatably attached to both ends. Rotating shafts 18a and 18b are attached to the slide shaft 17a near the lower end, and rotating shafts 18a and 18b are attached to the slide shaft 17b near the upper end.

One end of the handle 19 is attached to the rotating shaft C1. The rotary shafts 18a and 18b are attached so as to rotate about the rotary shaft C1.

As shown in FIG. 6B, when the handle 19 is rotated in the direction of the arrow (for example, clockwise), the rotating shafts 18a and 18b rotate in the rotation direction of the handle 19 via the rotation axis C1.

As the rotating shafts 18a and 18b rotate, the lower end of the slide shaft 17a is pushed upward and the upper end of the slide shaft 17b is pushed downward.

As shown in FIG. 6C, when the handle 19 is further rotated, the rotating shafts 18a and 18b rotate by about 90 ° from the initial state. The slide shafts 17a and 17b are slid in the vertical direction, respectively.

When the handle 19 is rotated counterclockwise, the slide shafts 17a and 17b can be contracted contrary to the above.

The stopper expansion / contraction mechanism 18 is not limited to the above-mentioned mechanism, and a well-known slide mechanism can be used.

The expansion / contraction mechanism of the inner stoppers 15 and 16 can be realized in the same manner as the expansion / contraction mechanism of the outer stopper 17.

A method of using the anti-theft device 10 of the embodiment will be described.
7 (a) to 7 (c) are schematic perspective views illustrating how to use the anti-theft device of the embodiment.
As shown in FIG. 7A, the overall length of the anti-theft device 10 is adjusted according to the distance between the side plates 2a and 2b of the cable drum 1. The length-adjusted anti-theft device 10 aligns the extending direction (extending / contracting direction) of the outer cylinder 12 and the inner cylinder 14 with the direction of the shaft connecting the mandrel through holes 4a and 4b of the cable drum 1, and the mandrel. Insert into through holes 4a and 4b.

As shown in FIG. 7B, the inner stoppers 15 and 16 are extended to prevent the anti-theft device 10 from being pulled out from the mandrel through holes 4a and 4b.

Further, the outer stopper 17 is extended to fix the anti-theft device 10 to the cable drum 1.

As shown in FIG. 7C, the wire 100 is passed through the wire through hole 20 provided in the outer stopper 17, and the cable drum 1 is fixed together with the anti-theft device 10 at the installation location.
In this way, the anti-theft device 10 can be used.

The effect of the anti-theft device 10 of the embodiment will be described.
Since the anti-theft device 10 of the embodiment includes plug portions 11 and 13 having a diameter close to the diameter of the mandrel through holes 4a and 4b of the cable drum 1, the mandrel through hole 4a in which the anti-theft device 10 is inserted is provided. , 4b can be prevented from passing the mandrel for transportation. Therefore, it is possible to prevent the cable drum 1 from being transported by passing the mandrel through the mandrel through holes 4a and 4b.

The anti-theft device 10 can be expanded and contracted by inserting the inner cylinder 14 into the inner diameter of the outer cylinder 12. Since the overall length of the anti-theft device 10 can be adjusted by expanding and contracting the outer cylinder 12 and the inner cylinder 14, it can be applied to the cable drum 1 having various dimensions.

Since the anti-theft device 10 is provided with inner stoppers 15 and 16 and outer stoppers on the stoppers 11 and 13, the anti-theft device 10 will not easily fall off or be pulled out after being attached to the cable drum 1.

Since the outer stopper 17 is provided with a wire through hole 20, the cable drum 1 equipped with the anti-theft device 10 can be easily and surely fixed to the installation location of the cable drum 1.

Since the anti-theft device 10 is provided with a theft detection means such as an inclination sensor 30, even if the cable drum 1 is fixed at the installation location as described above, it is likely to be forcibly transported by cutting a wire or the like. Even if it becomes or is transported, the act can be interrupted and the situation can be notified to the surroundings and the monitoring post.

According to the embodiment described above, it is possible to realize an anti-theft device for a cable drum that is not easily stolen.

Although some embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention and its equivalents described in the claims. In addition, the above-described embodiments can be implemented in combination with each other.

1 Cable drum, 2a, 2b side plate, 4a, 4b mandrel through hole, 6 core part, 10 anti-theft device, 11,13 plug part, 12 outer cylinder, 14 inner cylinder, 15,16 inner stopper, 17 outer stopper, 18 stopper telescopic mechanism, 19 handles, 20 wire through holes, 30 tilt sensors, 100 wires

Claims (5)

An anti-theft device that prevents theft of cable drums.
Two plugs that are inserted into the two mandrel holes of the cable drum, and
A tubular member provided between the two plugs and supporting the two plugs,
A first stopper provided so as to hold the two plugs in the two mandrel holes after inserting the two plugs into the two mandrel through holes.
With
The tubular member is an anti-theft device that can be freely expanded and contracted along between the two mandrel through holes. After the two plugs are inserted into the two mandrel through holes, they are provided in at least one of the two plugs and are held in at least one of the two mandrel through holes inserted and externally. The anti-theft device according to claim 1, further comprising a second stopper for connecting to a wire connected to the fixed object of the above. The first stopper can be freely expanded and contracted in the radial direction of the two mandrel through holes.
Before inserting the two plugs into the two mandrel through holes, insert them into the two mandrel through holes in a contracted state.
The anti-theft device according to claim 1 or 2, wherein after the two plugs are inserted into the two mandrel through holes, the two plugs are held in the two mandrel through holes in a stretched state. The anti-theft device according to any one of claims 1 to 3, further comprising a transport detecting means for detecting that the cable drum has been transported from the installation location. The transport detecting means includes a tilt sensor that detects the tilt angle of the cable drum and emits a signal based on the tilt angle, a vibration sensor that detects vibration of the cable drum and emits a signal based on the vibration. The anti-theft device according to claim 4, further comprising at least one of the position sensors that detect the position information of the cable drum and emit a signal including the position of the cable drum based on the position information.

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