JPS5884385A - Flexible filament for burglarproofing apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an anti-theft device, and relates to the structure of a nine-way flexible strip that is installed in such an anti-theft device and has an optical fiber inserted therein.

Conventionally, as a theft-prevention device for vehicles, especially motorcycles, optical fibers have been incorporated into anti-theft strips, and when in use, structures such as telephone poles and vehicles are clamped together with the flexible strips, and keys can be recorded. When the light is passed through the fiber and the flexible strip is cut and the light is cut off, the cut of the flexible strip is photoelectrically detected and an alarm is activated. Im
A casting device has been proposed by the applicant. It is desirable that a commercially available body that incorporates such optical fibers should be able to withstand frequent use, have sufficient strength, and be constructed with a safe 4iAK backing. It is necessary to reduce the optical attenuation of the fiber and to incorporate it into a flexible strip so that the decrease in light transmission efficiency is small. r a yl ”) 4 'r J toy 5) t,
The Hikari 7 Eyeper and at least one conductive wire are inserted into a flexible tube in the axial direction, and a reinforcing member is carefully wrapped around the tube to prevent the Hikari 7 Eyer etc. from being damaged. (, low cost and.

The present invention provides a lock wire for an anti-theft device that reduces the amount of optical attenuation of an optical fiber and prevents a decrease in light transmission efficiency.

The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram showing an example of an electrical system of an anti-theft device to which the lock wire of the present invention is applied.

Reference numeral 1 indicates a primary light-emitting element (for example, a light-emitting diode) disposed at one end of an optical fiber 21 inserted through a lock wire 2, which will be described in detail later. The light-emitting element 1 and the light-receiving element 3 in which the light-emitting element 1 and the light-receiving element 3 are provided are electrically connected to an electric circuit 4, respectively. The electric circuit 4 connects the light emitting element 1. It drives the light-receiving element 3 and generates a warning signal according to the output of the light-receiving element 3. An alarm 5 is connected to its output side, and a power supply 6 is connected to the electric circuit 4 and the alarm 5sic, respectively. It is set to K so that power is supplied.

In addition, a lead connects the light receiving element 3 and the electric circuit 4! 22
．． 22' is wound inside the lock wire 2 of the present invention, which will be described later.

The electrical circuit 4 is an overgIi circuit 41. It includes a receiving circuit 4b, a disconnection detection circuit 4C, and a driving circuit 4d, and a transmitting circuit 41.
For example, the light emitting element I is a pulse oscillation circuit that outputs a pulse signal Pa of a predetermined period. The light emitting element I converts an electric signal into a corresponding optical signal, and is activated in response to the pulse signal Pa11c to emit light and output an optical pulse signal ph. This optical pulse signal Pb
is transmitted into optical fiber 21. The light-receiving element 3 converts an optical signal into a corresponding electric signal.
The receiving circuit 4b receives and detects the signal Pb from the light-receiving element 3 and outputs the corresponding pulse signal Pc. Circuit 41, receiving circuit 4b
It detects a break in the fiber 21 from the pulse signals pm and PcK output from the filter 1. For example, if the AND condition of the signals Pa and Pc is satisfied, the condition is normal; if the condition is not satisfied, the condition is normal. It is determined that there is an abnormality, and when an abnormality occurs, an abnormality signal Pd is output. The drive circuit 4 is a round circuit that activates the alarm 5, and outputs a drive signal Ps according to the input signal Pd. The alarm device 5 is a buzzer, for example, which operates in response to the drive signal PsK and generates an alarm.

FIG. 2 is an external view of an example of a drink theft prevention device incorporating the electrical system shown in FIG. The electrical circuit 4 shown in FIG. 1 is installed in the housing 7. −
The device 5 and the power source 6 are incorporated, and the housing 7Fi is firmly fixed to the side of the rear cowl 14 below the seat 13 of the motorcycle shown in FIG. 3, for example. lock wire 2
One end 2mk has the light emitting element 1 and the connector mounted inside, and a nine plug 8 is fixed thereto, and the other end 2b@flc has a small loop 2c formed, and the end 2b is secured to the lock by crimping instruction A9. It is firmly caulked to the wire 2. In addition, the light receiving element 3 of I/C FIG. 1 is supported and built in a capsule (not shown) so that the end 2bK is aligned with the end of the optical 7 eyer 21, and the end s2b is attached to the caulking metal fitting as described above together with this capsule. It is caulked by.

When attaching a vehicle to a utility pole 10, etc., first wrap the lock wire 2 around the utility pole 10 and then tie it inside the small loop 12c.
Insert the Prada 8 into the socket (IIK) and attach the plug 8 to the socket (IIK) of the housing 7. In addition, in the 'IIK2m, numeral 12 is a lock that prevents the plug 8 and the socket 11 from coming off. .

Next, the lock wire 2 according to the present invention, which is used as described above, will be explained based on Figure 411 and Fig. S.

114■ and S- indicate a lock wire 2 according to an embodiment of the present invention, and the lock wire 2 has a synthetic resin coating (for example, polyvinyl chloride, polyethylene, etc.) 2 at its axial center.
Optical running fiber coated with 3! 1 and, for example, two lead wires 22 and 22' are inserted through a flexible chain 24 made of, for example, polyethylene in parallel in the axial direction. A plurality of (for example, seven) steel wires 26 are twisted around the outer circumference of the tube 24 to form a plurality of (for example, six) strands 25.
is coated with IIk, and the outside of the strand 2s is made of synthetic resin *J [(e.g. polyvinyl chloride) 27
・Covered with

At the axial center of the lock wire 2, there is a tube 24. The optical fiber 21 is prevented from being damaged and easily cut by the strand 27 etc. Also, as mentioned above, the optical fiber 21 is inserted in a straight line in the axial direction and is not bent unnecessarily. The optical pulse signal ph shown in FIG. 1 can be transmitted quickly over the shortest distance, and the loss of the output of the optical pulse signal can be reduced.

Further, the number of leads 11i22, 22' is not limited to two as shown in the illustrated example, but for example, only one can be used as a positive conductor and the strand 25 can be used as a negative conductor.

Note that the number of strands 25, the number of wires 26, the way of twisting, etc. can be selected arbitrarily, taking into consideration the outer diameter 1 strength of the lock wire 2, etc.

The lock wire of the anti-theft device of the present invention having the above-mentioned structure protects the optical fiber and increases durability, has sufficient strength, and has a simple structure, making it easy for security personnel to install.
It is possible to make an i-build. 1! <.

Since the optical fiber is inserted linearly in the axial direction of the lock wire, the total length of the optical fiber 7 can be shortened and the amount of light attenuation can be reduced, and the twist of the optical fiber can be reduced for a long time.
It is possible to prevent a decrease in light transmission efficiency.

[Brief explanation of drawings]

Figure 1 is a block diagram showing an embodiment of the electrical system of a theft prevention device to which the flexible strip of the present invention is applied. @2 is an external view showing an example of the use of a flexible strip, and Fig. 3 is an external view showing an example of the use of a flexible strip. A cross-sectional view of the flexible strip of Company 411 and FIG. 5 show the incision side fIim of the flexible strip. 1-・Light emitting element, G.・Flexible strip body (with lock wire 3
... Light receiving element, 4... Electric circuit, 5... Alarm device,
21... Hikari 7 Aipa, 22. ! 2'...Lead wire,
23゜2@...Synthetic resin covering 11g, 24-...Flexible tube,! S...Strand. Applicants: Honda Motor Co., Ltd., Honda Lock Co., Ltd., Kokoku Co., Ltd. Top p1, -le 1'- pub -L: Imaichi pull stock gold-sha Figure 1 Figure 2 Figure 5

Claims (1)

[Claims] 1. An optical fiber is inserted through the nine flexible strips. In the anti-theft device, the fiber and at least one conductive wire are inserted into the flexible tube in the axial direction so as to chargeably detect the cutting of the flexible strip and issue an alarm. 9th layer and. 9. A structural strip for an anti-theft device, characterized in that the tube is used as an axis and a second layer including a reinforcing member is wound around the outer periphery of the tube. λ The flexible strip of the theft prevention device according to claim 1, wherein each of the reinforcing members is made of a plurality of strands formed by twisting a plurality of O steel strands. .