JP2003027802A - Burglar-proof chain - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a burglar-proof chain with high resistance force capable of being not easily cut by a tool such as a clipper or the like. SOLUTION: The burglar-proof chain for tightly binding an article such as a motorcycle or the like is so constituted that one or more fibers are arranged to the inside of a hose 2 covering the chain 1 in parallel with the chain and that the fibers 5 are combined so as to connect both parts of the chain separated by cutting when the chain 1 is cut off at a part covered by the hose 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antitheft chain that cannot be easily cut with a clipper or the like.

[0002]

2. Description of the Related Art In order to prevent the theft of articles such as motorcycles, chains have been used to secure them to prevent the wheels from rotating and to fix them to utility poles to prevent them from moving. . This anti-theft chain has both ends locked so that the lashing can not be easily released, and it is covered with a synthetic rubber or vinyl hose to prevent the chain from being damaged by metal touch. Is common.

If the chain is secured with this anti-theft chain and locked so that the chain cannot be easily unlocked,
It may seem safe at first glance, but if a thief prepares a tool such as a clipper in advance and uses it, the steel chain will be easily cut and will not be useful for theft prevention. In order to avoid this, it is conceivable to use a chain material with as high strength and hardness as possible, such as hardened steel or stainless steel, but even if the resistance to cutting increases a little Since it is a dozen millimeters round bar, cutting with a clipper etc. is inevitable.

[0004]

SUMMARY OF THE INVENTION The problem to be solved by the present invention is to provide an anti-theft chain having high resistance which cannot be easily cut by a tool such as a clipper.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a chain for securing articles to prevent theft thereof, wherein one hose covering the chain is provided along the chain. Or a theft characterized by arranging a plurality of fibers and combining the fibers so that when the chain is cut at the part covered with a hose, both parts of the chain separated by the cutting are tied together. It is a prevention chain.

Those who try to steal by cutting the anti-theft chain prepare a clipper or a similar type of tool which pushes it down by shearing force. This is because a round bar having a diameter of several millimeters can be cut most easily, efficiently and quickly. When the chain is pushed down by a clipper etc., there is a gap of about 1 mm in the blade part, and a few mm in the case of a large number. What can be pushed out by shearing force such as steel material,
This is because the tool can be cut without pressing it until the blades fit snugly, and the tool is provided with appropriate play on the premise of that.

When the anti-theft chain of the present invention is cut using such a tool, the chain itself is cut, but the fibers arranged along the chain remain in the gap between the blades of the tool, Not cut off. If the fibers are connected so that the end of the chain covered with the hose and the chain link at the end are connected as much as possible, even if the chain is cut at almost any part covered with the hose, it will be divided into two by cutting. The two parts of the chain are tied together by fibers and do not separate the chains into pieces.

Since the fibers are in the hose that covers the chain and cannot be seen from the outside, the thief pushes the chain in the hose with a clipper or the like and the broken chain is separated and falls off the hose. Perform the cutting work with the expectation that the lashing will be released and the article will be free. However, despite the fact that the chain was broken, the chain did not fall apart, and its staking could not be released. The unexpected result is that it's not easy to see why the broken chains aren't separated, and the thieves give up and leave.

The fact that the fiber cannot be cut is due to the characteristic of the tool of the type that pushes it out by shearing force, that is, the gap left in the blade portion at the time of cutting, so the fiber to be used need not be a particularly strong one, Even a general packing string or the like can sufficiently obtain the above effect. Also, the fiber is placed in the hose so that the thief will not immediately notice the presence of the fiber, and it is more effective for the hose to use an opaque material. Further, for the same reason, the arrangement of the fibers may be housed in the hole of the hose together with the chain, or may be embedded in the material forming the hose in the form of a core wire. However, in either case, the fiber is pierced through the holes in the link of the chain so that both parts of the chain that have been separated due to the cut are bound by the fiber, and then both ends are formed into a ring by themselves. It must be tied or the ends of the fibers must be tied directly to the links of the chain to hold it securely in place.

The anti-theft chain of the present invention is characterized in that the fibers arranged along the chain are reinforcing fibers used as a resin reinforcing material, and in particular, aramid fibers.

As described above, with a tool of a type such as a clipper that pushes it out with shearing force, fibers such as packing strings will not be cut, and the strength that a thief will end up trying to take away with his arm strength will be even greater. If so, the object of the present invention can be achieved. However, if the thief prepares a cutter knife, etc. in addition to the clipper, he or she will try to break the chain with the clipper and then use the cutter knife to completely separate the chain and release the binding. In that case,
It is more desirable to use a fiber having high strength against cutting with a cutter knife or the like, since the resistance to theft is increased. For example, reinforcing fibers used as a resin reinforcing agent, that is, carbon fibers, glass fibers, aramid fibers and the like. In particular, aramid fiber, which is commercially available under the trade name of "Kepler fiber" and has a good anti-cutting property and which is widely used for bulletproof and blade protection, is the most suitable fiber for the purpose of the present invention. By using these fibers, it is possible to have a high resistance to secondary cutting actions by a cutter knife, etc., and it is possible to counter thieves who have prepared various tools. Produce an effect.

Further, the anti-theft chain of the present invention is characterized in that the above-mentioned fiber is formed in a cylindrical shape to cover the chain.

In arranging the fibers, one or a few fibers are not simply arranged along the chain, but a tubular braid of the fibers is put on the chain,
It is also conceivable that the hose may be placed on top of it, or a tubular braid of the fibers may be included as a core material in the material forming the hose. in this way,
By constructing the fibers in a tubular shape that covers the chain, the resistance can be further increased as compared with the case of using one or several fibers. Even in these cases, the ends of the tubular knitted fiber that ties the two parts of the chain that were separated due to being cut pass through the hole in the link of the chain, and then form a ring by themselves to combine them. Or it must be secured by connecting it directly to the chain link.

In any case, since only a small amount of fiber is added to the conventional anti-theft chain, the cost is small and the cost is excellent despite the improvement in performance. The effect of saying is obtained.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail based on embodiments with reference to the drawings. Needless to say, the present invention is not limited to this embodiment, and various modifications may be made to its specific structure within the scope of the present invention. FIG. 1 is a side view and a sectional view showing a configuration of a first embodiment which is a basic form of the present invention. 2 and 3 are a side view and a cross-sectional view showing another aspect regarding arrangement of fibers. FIG. 4 is a side view and a sectional view showing the configuration of the second embodiment,
FIG. 5 is an explanatory diagram showing a usage state of the second embodiment.

[0016]

First Embodiment As shown in FIG. 1, the basic structure of the anti-theft chain of the present invention is as follows: a chain 1 for securing an article, a hose 2 for covering it, and a hose 2 arranged inside the hose along the chain 1. It consists of 5 fibers. The links 3 and 4 at both ends of the chain 1 are located outside the hose 2, and are made slightly longer than the other links so that the link 3 can be inserted into the hole as shown in the figure. There is. After binding the article, insert the link 4 into the hole of the link 3
It suffices to put a key on the tip of the lock, and the lock effect can be obtained by using locks of various types.

The fiber 5 is extended along the chain 1, penetrates through the holes of the links 7 and 8 at the end of the links of the chain covered with the hose, and then is inverted, and the chain is re-established. The links 7 and 8 are connected by extending along 1 and forming a knot 6 and connecting with each other. In this example, the links at the ends of the chain covered by the hose were connected to each other because it was impossible to predict in advance which part of the chain the thief would cut. Even if it is cut, the effect of not connecting the two parts of the chain that has been divided by the fiber 5 so that they are not separated is possible under the condition that the fiber 5 is covered with the hose 2 and is not clearly visible to the thief. This is because it is used with a high probability.

In the embodiment shown in FIG. 1, the fibers are placed along the chain in a hose covering the chain, the ends of the fibers passing through the holes in the links of the chain and then self-looping to join. However, various other modes of fiber arrangement are possible. Examples of these are shown in FIGS. 2 and 3.

FIG. 2 shows an embodiment in which fibers are embedded in the material forming the hose in the form of a core wire. The chain 11 is covered by a hose 12, and a plurality of, in this drawing, two fibers 1 are contained in the material forming the wall of the hose.
3 and 14 are embedded. The fibers 13 and 14 that have exited at the end face of the hose penetrate through the holes in the links of the chain and are then tied together by forming a knot 15. By covering the chain 11 with the hose 12 in which the fibers are embedded, the manufacturing process can be simplified as compared with the case of FIG.

FIG. 3 shows a mode in which a tubular knitted material 18 is put on the chain 16 and a hose 17 is put on the chain 16. The tubular braided fiber ends 19 leave only the warp yarns, which are divided into two groups and are the endmost links 20 of the chain 16 covered by the hose.
After being penetrated through the holes, they are bundled into one and joined by a connector 21 which is crimped with a metal piece.

[0021]

[Embodiment 2] FIG. 4 shows the configuration of the second embodiment, and FIG.
Indicates the usage status. In this embodiment, two basic shapes of the first embodiment are combined so as to be suitable for preventing theft of a motorcycle or the like. The larger chain 31 is a lashing chain that ties the article to a fixed object such as a utility pole, and the smaller chain 32 is a tie chain that is fixed by wrapping it around a tire or the like so that the lashing chain does not move. is there. Regarding the numbering in the figure, the same number is used for the objects that perform the same function as in Example 1 with "a" attached to the lashing chain 31 and "b" attached to the fixing chain 32. .

The link 4b at the end of the fixing chain 32 is
It is connected to the link 9a in the chain 1a of the lashing chain 31. Due to the connection, the hose 2a is the same as the first embodiment.
The range that covers the chain 1a is narrower than in the case of.
The link 3a at the end of the lashing chain 31 and the link 3b at the other end of the fixing chain 32 are made slightly longer than the other links so that the link 4a can be inserted into their holes. There is. Both the lashing chain 31 and the fixing chain 32 are covered with hoses 2a and 2b, respectively, and the fibers 5a and 5b are arranged along each chain therein.
Out of the links of the chain covered by the hose, the links 7a and 8a and the links 7b and 8 at the end respectively.
b is connected.

In use, a frame for a motorcycle or the like and an electric pole or the like are secured with a lashing chain 31, the fixing chain 32 is wound around a tire of the motorcycle, and then the link 4a is linked to the link 3a and the link 3b. The lock 4 is passed through the hole of (4) and the lock 23 is locked at the tip of the penetrating link 4a.

By adopting a form in which the fixing chain 32 is added to the basic anti-theft chain, there is no problem that the position of the key moves and it becomes difficult to unlock, so that it can be used comfortably and also in the fixing chain. Arrange fiber 5b,
By winding it around the tire and using it to prevent the tire from rotating, the fixing chain itself can exert the antitheft effect.

[0025]

As described above, the anti-theft chain of the present invention does not separate into pieces even if the chain is pushed by a shearing force with a tool such as a clipper and the binding cannot be released. On the contrary, it also has the effect of giving up the theft, because it is not easy to see why the chain that should have been cut is not separated. Also,
By selecting the type of fiber, it is possible to have a high resistance to secondary cutting actions with a cutter knife etc., and it is possible to counter the thieves who have prepared various tools Cause

Furthermore, by considering the arrangement of the fibers, the resistance can be further increased and the manufacturing process can be simplified.
Further, compared to the conventional anti-theft chain, it has the effect of being less expensive and less costly, despite its improved performance.

[Brief description of drawings]

FIG. 1 is a side view and a sectional view showing a configuration of a first embodiment which is a basic form of the present invention.

FIG. 2 is a side view and a cross-sectional view showing another aspect regarding arrangement of fibers.

FIG. 3 is a side view and a cross-sectional view showing still another aspect regarding arrangement of fibers.

4A and 4B are a side view and a sectional view showing a configuration of a second embodiment of the present invention.

FIG. 5 is an explanatory diagram showing a usage state of the second embodiment of the present invention.

[Explanation of symbols]

1, 1a, 1b Chain 2, 2a, 2b Hose 3, 3a, 3b Chain end link 4, 4a, 4b Chain other end link 5, 5a, 5b Fiber 6 Knot 7, 7a, 7b Cover on hose The links 8, 8a, 8b at the outermost end 9a The links of the lashing chain to which the fixing chain is connected 11 The chains 12 The hoses 13, 14 The fibers 15 The knots 16 The chains 17 The hoses 18 The fibers 19 woven into a tubular shape The ends Part 20 Endmost link covered with hose 21 Connector 23 Lock 31 Locking chain 32 Locking chain

Claims (4)

[Claims] 1. A chain for securing an article to prevent theft of the article, wherein one or a plurality of fibers are arranged along the chain in a hose covering the chain, and
An anti-theft chain, characterized in that when the chain is cut at a portion covered with the hose, the fibers are combined so as to tie both parts of the chain separated by the cutting. 2. The anti-theft chain according to claim 1, wherein the fiber is a reinforcing fiber used as a resin reinforcing material. 3. The anti-theft chain according to claim 2, wherein the reinforcing fibers are aramid fibers. 4. The anti-theft chain according to claim 1, wherein the fiber is formed in a tubular shape that covers the chain.