JPS5862258A - Anti-theft apparatus for vehicle - 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 a vehicle anti-theft device that incorporates an optical fiber into a flexible strip and photoelectrically detects the cutting of the flexible strip to activate an alarm. .

2. Description of the Related Art Conventionally, anti-theft devices for vehicles, particularly motorcycles, are of the wire lock type using flexible strips, such as wire locks. This method involves wrapping a lock wire around a strong structure such as a utility pole and the vehicle body, and locking the vehicle by fitting locks attached to both ends of the lock wire to firmly connect the vehicle to the structure. This is what I did.

However, in recent years, with the development of cutting tools such as wire cutters, wires can be easily cut and theft incidents tend to occur frequently. Therefore, an anti-theft device is used in which an electric wire is embedded in the wire and energized, and the disconnection of the wire is detected all at once to activate a newsletter.

However, in the above-mentioned electric type FT@, if a current detour is formed separately in place of the current-carrying line in the wire, it is possible to disable the K-shield alarm.

The present F14 was developed in view of the above points, and an optical fiber is built into a flexible strip, and when used, light is passed through this optical 7-eyeper, and the flexible strip is cut and the light is quickly cut. The present invention provides an anti-theft device for a vehicle that photoelectrically detects the breakage of the flexible strip and activates an alarm when the vehicle is stolen.

Hereinafter, one embodiment of the present invention will be described in detail based on the accompanying factors.

1 to 3 show an embodiment of the present invention, in which a plug 7 which is a connecting member is fixed to one end 11 of a flexible strip 1), and the other end lb side A small loop IC is formed in the flexible strip 1, and the end portion 1b is attached to the flexible strip 1 by a caulking metal fitting 8.
It is firmly caulked. Axial center position c of flexible strip 1! As shown in FIG.
．． 4 is incorporated, and the outer part of the optical fiber 2 is coated with a synthetic resin (not shown). Around the outer periphery of these optical fibers 2 and electric wires 3.4, a flexible member such as a plurality of wires 5 is arranged in a spiral shape along the longitudinal direction! Further, the outer end of the wire 5 is coated with a synthetic resin 6 such as vinyl.

The plug 7 has a substantially cylindrical shape, and has 7 lunges 7m and an annular groove 7b formed along the central direction in the outer wall section, and an O for waterproofing and dustproofing in the annular groove 7b. ring 10
are fitted. Furthermore, the plug 7 has a locking cutout 7C and a key groove 7d extending in the axial direction from the open end 7f toward the center on the outer circumference of the plug 7. The tip 5a of the wire 5 is fitted into the open end 7e of the plug 7, and the tip 5a of the wire 5 and the plug 7 are firmly fixed by caulking. This plug 7 is made of hard metal.

The support body 11 has a substantially cylindrical shape, and has a - side opening end KF.
A charging element, such as a light emitting diode 12, is inserted into the other open end of the end 2a of the i-optical fiber 2, respectively. 2ml end face of optical fiber 2 and light emitting diode 120 light emitting part 1
21 and are arranged opposite to each other at a predetermined interval and aligned with each other. This support body 11 is made of, for example, synthetic resin.

A connector 13 is fitted into the open end 7f of the plug 7, and connection terminals 13a and 13CKU light emitting diode]2 are connected to connection terminals 12b and 12C, and electric wires 3.4 are connected to connection terminals 13m and 13b, respectively. There is. The space inside the plug 7 is filled with a filler 14 such as synthetic resin to firmly fix the support 11 and the connector 13 at predetermined positions within the plug 7.

A substantially cylindrical bottomed capsule 20 is attached to the end 5b (FIG. 3) of the wire 5, and this capsule 20 is firmly fixed to the rear end 5b by caulking.

A support body 21 is arranged inside this capsule 20, and
A light-receiving element 22□ is inserted into the end 2b of the − side opening @Kld optical fiber 2 and the other side opening. The end surfaces 2 b' of these optical fins <2 and the light receiving surface 221 of the light receiving element 22 are arranged facing each other and aligned at a predetermined interval.

Each connection of the light receiving element 22, the connection terminals 13C, 13 of the connector 13 via the electric wires 3°4, U terminals 22b, 22CFi, respectively.
connected to b. The support 21ti is firmly fixed within the capsule 20 by the filler 14.

Further, the capsule 20 is made of hard metal like Gragua.

After inserting this capsule 20 into the through hole sa of the caulking metal fitting 8, a small loop IC (Fig. 1) is formed, and the through hole 8a
It is inserted into the bottomed holes 8b arranged in parallel with each other, and is firmly fixed to the flexible strip 1 by caulking. As mentioned above, the capsule 20 is made of hard metal, so it will not be crushed when it is caulked, and the optical fiber 2. Light receiving element 2
2. Protect the support 21, etc.

The housing 31 of the main body 30 (Fig. 4) includes a socket 32 into which the plug 7 is attached, a lock 33 that locks or unlocks the plug 7 and the socket 32, a power supply case 34, and an electric circuit 40.
An alarm device 41 and the like are provided. The socket 32 has a substantially cylindrical shape, and the plug 7 is connected to the seventh rank portion 7al.
t], and has a connector 35 at the bottom end that engages with the connector 13 of the plug 7.
A protrusion 32C is provided at a predetermined position on the wall 321 to engage with the keyway 7d of the pulley. This connector 35
Each connection terminal 351 to 35cc (Fig. 5) is connected to the electric circuit 40.
is connected to a predetermined connection terminal (not shown).

A hole 32b is bored in the wall 321 of the socket 32 at a position corresponding to the notch 7C of the plug.
A locking pin 36 is inserted and removably inserted into b. The -fils 361 of this pin 36 faces into the socket 32, and a spring 37 is interposed between the other end 36b and the wall of the housing 31, and a hole 36C located approximately in the center is provided with a spring 37 for operating the lock 33. The child 33b is fitted. When the pin 36 is not inserted into the socket 32, the pin 36 is pressed leftward by the pressing force of the spring 37 as shown in FIG. 5, and the tip 36M protrudes into the socket 32.

When the key 5o is inserted into the keyhole 33aP3 of the lock body 33 and rotated counterclockwise to the off position (FIG. 4) against the spring 37, the pin 36 moves to the right and the tip 361 locks into the socket. 32 into the hole 32b.

Power supply case 34 #i is removably attached to the housing 31 and can house a power supply 45 such as a battery or a battery.

A plug 7 is connected between the power supply case 34 and the socket 32.
A locking mechanism 38 (FIG. 4) is provided that locks the power supply case 34 to the housing 31 in cooperation with the locking mechanism 38 (FIG. 4). In the illustrated state in which the plug 7 is not inserted into the socket 32, the locking mechanism 38 is released and the power supply case 34 can be freely removed from the housing 31. A locking pin (not shown) is pressed by the outer periphery of the power supply case 2340 and fitted into a notch (not shown), so that the power supply case 34 is locked and fixed to the housing 31 so that it cannot be removed.

The electric circuit 40 (FIG. 6) includes a transmitting circuit 40a and a receiving circuit 4.
The transmission circuit 40m is, for example, a pulse oscillation circuit and outputs a pulse signal Pg of a predetermined period. The light emitting diode 12 converts an electrical signal into a corresponding optical signal, and operates in response to the pulse signal PIK to output an optical pulse signal Ph. This optical pulse signal Ph is transmitted into the optical fiber 2.

The light receiving element 22 converts an optical signal into a corresponding electric signal, and outputs an electric pulse signal Pb corresponding to the optical pulse signal Ph input from the optical fiber 2. Receiving circuit 40b
The disconnection detection circuit 40C receives and detects the signal Pb from the light receiving element 22 and outputs the corresponding pulse signal Pc.
It detects the breakage of the optical fiber 2 by the pulse signals Pa and Pc input from the
An AND condition with c is taken, and if the condition is satisfied, it is determined to be normal, and if not, it is determined to be abnormal, and when abnormal, an abnormal signal Pd is output. Of course, the abnormality signal Pd is output not only when the optical fiber 2 but also when the electric wires 3 and 4 are disconnected. Furthermore, this disconnection detection circuit 40G determines the connection state between the plug 7 and the connectors 13 and 35 of the socket 32 of the housing 31, and when they are connected, that is, the plug 7
When K is installed in socket) 32, turn on the power,
When not connected, that is, plug 7 is connected to socket 3
2, the power is turned off.

The drive circuit 40 (l is for activating the alarm 41, and outputs a drive signal Ps corresponding to the input signal Pd).The alarm 541 is, for example, a buzzer, which is activated in response to the drive signal PdK to generate an alarm. The casing 31Fi is firmly fixed to a predetermined position on the body of an appropriate object to be prevented from being stolen, such as a motorcycle (not shown).

When using an anti-theft device with such a configuration, first, the flexible strip 1 is wrapped around a strong structure (not shown) such as a telephone pole, and then the plug 7 is inserted into the small loop IC. is installed in the socket 32 of the housing 31. That is, the flexible strips 1 are tied together by weaving. When the plug 7 is completely installed in the socket 32, the spring 37 causes the tip 361 of the bottle 36 to be inserted into the plug 7.
The plug 7 protrudes and fits into the notch 7 C (Fig. 1112).
is locked and fixed to the housing 31.

In the state in which the plug 7 is completely attached to the housing 31, the electric circuit 40 is in operation, and the optical pulse signal Ph is transmitted into the optical fiber 2.

When the flexible strip 1 is not cut, the optical pulse signal Ph is transmitted to the light receiving element 22, and the light receiving element 22
A signal Pb is output from. Therefore, as described above, the AND condition of the signals Pa and Pc is satisfied, and the alarm 41 is not activated.

However, when the flexible strip 1 is cut with a wire cutter or the like, the optical fiber 2 and the electric wire 3.4 are also cut, and the output signal Pb of the light receiving element 22 becomes zero. Then, the AND condition of the signals Pa and Pc is no longer satisfied, and the disconnection detection V path 40C is determined to be abnormal and outputs the signal Pd. The drive circuit 40d outputs the signal Pd1 (the corresponding drive signal Ps) to activate the alarm 41 and generate an alarm.

When the driver removes the flexible strip 1 from the housing 31, Kt
j. Insert the key 50 into the keyhole 33a of the lock body 33 and turn it to the off position (FIG. 4) t. In this OFF position, as described above, the tip 36M of the locking bottle 36 comes off the notch 7C of the plug 7, and the locking relationship between the plug 7 and the socket 32 is released. Therefore, the plug 7 can be removed from the housing 31. Also, at this time, as mentioned above, the power supply is turned off, and the electric circuit 40
゜The alarm 41 becomes inactive.

This pressure prevents theft.

In this embodiment, a case is described in which a wire is used as the flexible strip, but the present invention is not limited to this, and a bendable tube made of a hard metal and having an approximately bellows shape may be used. It's okay.

In addition, in this example, a field umbrella is described in which a light emitting element is placed in the plug and a light receiving element is placed in the capsule. Of course, it may be provided.

As explained above, according to the present invention, it is extremely difficult to form a detour to disable the alarm in order to photoelectrically detect the cutting of the flexible strip using light. Therefore, it is possible to reliably detect the cutting of the flexible strip. However, since the element is placed in a capsule inside the caulking metal fitting, which is extremely strong against external forces, the element can be strongly protected and has the advantage of improved durability. .

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of a flexible strip used in a vehicle anti-theft device according to the present invention, FIG. 2 is a longitudinal cross-sectional view of a plug of the flexible strip shown in FIG. 1, FIG. 3 is a longitudinal cross-sectional view of the caulked portion of the flexible strip shown in FIG.
3 is a sectional view taken along the line A' of the main body shown in FIG. 4, and FIG. 6 is a block diagram showing an embodiment of the electric circuit of the apparatus of the present invention. 1... Flexible strip, 2... Optical fiber, 3.4...
・Electric wire, 5... Wire, 7... Plug, 8... Crimping fitting, 11.21... Support body, 12... Light emitting element, 13.35... Connector, 20... - Capsule, 22... Light receiving element, 30... Main body, 3]... Housing, 32... Socket, 33... Lock body, 34...
Power supply case, 40... Electric circuit, 41... Alarm,
45...power supply, 50...key. Person departing: Honda Motor Co., Ltd. Honda Lock Co., Ltd. Patent Attorney Toshihiko Namabe

Claims (1)

[Scope of Claims] t. In a vehicle anti-theft device that connects a vehicle to an appropriate structure using a flexible strip that can be attached and detached by key operation, an optical fiber is inserted into the front flexible strip and this light is transmitted. A light emitting element is arranged at one end of the fiber, a light receiving element is arranged at the other end, and
A crimping member K that forms a small loop on one end side of the wrinkled flexible strip and crimps this end to the skeleton flexible strip.
m The light emitting element or light receiving element on the end side is housed, and the other end KFi The flexible strip and each of the above elements are housed in a casing fixed to the vehicle side and an electric circuit housed under the pressure inside the casing. A vehicle theft device characterized in that it is fixed to a connecting member that is mechanically and electrically connected to each other. z The electric circuit drives the light emitting element, detects a break in the optical fiber based on a signal from the light receiving element, and activates an alarm. Anti-theft device for vehicles as described in .