JPS6251352B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an anti-theft device in which a dedicated power supply case is fixed to a housing when a flexible strip is connected to the housing.

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 wires. This involves wrapping a locking wire around a strong structure such as a telephone pole and the vehicle body, and locking the locking body by fitting the locks attached to both ends of the locking wire to firmly connect the vehicle to the structure. It is something.

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 electrically detected and an alarm is activated.

By the way, the vehicle anti-theft device usually uses a vehicle battery as a power source, but there is a risk that the vehicle battery may be inadvertently discharged due to a malfunction of the charging device or the life of the battery. In such a case, the anti-theft device for the vehicle will no longer function.

Therefore, it is necessary to have a dedicated power source such as a battery built into the device to ensure that the device can operate independently, and accordingly, the power supply case that houses the dedicated power source cannot be removed from the device when the device is operating. It is necessary to lock it like this.

The present invention has been made in view of the above-mentioned points, and it is an object of the present invention to make it impossible to remove a dedicated power supply case that is removably housed in an anti-theft device from the device when the device is in operation. In order to achieve this object, the present invention includes a casing and a flexible strip connected to the casing to tie the casing to a structure whose theft is to be prevented. In an anti-theft device that detects cutting of a strip and activates an alarm means, a power supply case that houses a dedicated power source for supplying power to the anti-theft device is removably housed in the housing, and the flexible A locking mechanism is provided for fixing the power supply case to the housing in a state in which the strips are connected, so that the power supply case cannot be removed when the device is in operation.

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows an embodiment of a flexible strip used in a vehicle anti-theft device according to the present invention. A plug 2, which is a connecting member, is fixed to one end 1a of the flexible strip 1. A small loop 1c is formed on the other end 1b side, and the end 1b is firmly caulked to the flexible strip 1 by a caulking metal fitting 3. An optical fiber and an electric wire (not shown) are incorporated into the axial center of the flexible strip 1, and the outer periphery of the optical fiber is coated with synthetic resin.
A flexible material such as a plurality of wires is tightly wound in a spiral manner along the longitudinal direction around the outer periphery of these optical fibers and electric wires, and the outer periphery of the wire is made of synthetic resin such as vinyl. Covered.

The plug 2 has a substantially cylindrical shape, and a flange 2a and an annular groove 2 are provided along the circumferential direction approximately at the center of the outer periphery.
b is formed, and an O-ring 4 for waterproofing and dustproofing is fitted into the annular groove 2b. Furthermore, the outer circumference of the plug 2 is provided with a locking notch 2c and a keyway 2d extending in the axial direction from the tip 2f toward the center.
is formed. A light emitting element (not shown) is disposed inside the plug 2 so as to face one end surface of the optical fiber, and its connection terminal is connected to a connector (not shown) fitted into the tip of the plug 2. It is connected. A light receiving element (not shown) is disposed inside the caulking fitting 3 so as to face the other end of the optical fiber, and its connection terminal is connected to the connector via the electric wire. The light emitted from the light emitting element propagates through the optical fiber and reaches the light receiving element.

The housing 11 of the main body 10 (FIG. 2) has a socket 12 for attaching the plug 2, and a socket 12 for the plug 2 and the socket 12.
A lock body 13 for locking or releasing the lock, a power supply case 14, an electric circuit 30, an alarm 31, etc. are provided. The socket 12 has a substantially cylindrical shape, and has a size that allows the plug 2 to be inserted circumferentially up to the flange 2a, and has a connector 15 (first connector) at the bottom end that engages with the connector of the plug 2. 3
As shown in the figure), a protruding portion 12c that engages with the keyway 2d of the plug 2 is provided at a predetermined position on the wall portion 12a. Each connection terminal of this connector 15 is connected to a predetermined connection terminal (not shown) of an electric circuit 30, as shown in FIG.

A hole 12b is bored in the wall 12a of the socket 12 at a position corresponding to the notch 2c of the plug 2, and a locking pin 16 is inserted and inserted into the hole 12b so as to be freely removable. One end 1 of this pin 16
6a faces into the socket 12, and the other end 16
A spring 17 is interposed between b and the wall of the casing 11,
The operator 13 of the lock body 13 is located in the hole 16c approximately in the center.
b is fitted. This pin 16 is connected to the spring 17 when the plug 2 is not inserted into the socket 12.
As shown in FIG. 3, the tip 16a is pushed leftward by the pressing force of , and the tip 16a protrudes into the socket 12. Insert the key 36 into the keyhole 13a of the lock body 13 and turn the spring 17 counterclockwise until it reaches the off position (Fig. 2).
When the pin 16 is rotated against this, the pin 16 moves to the right and the tip 16a sinks into the hole 12b of the socket 12.

As shown in FIGS. 4 and 5, the power supply case 14 has a substantially box-like shape, and is removably inserted into a storage section 11a provided below the socket 12 of the housing 11. A dedicated, predetermined power source, such as a battery 35, can be removably housed through the open end 14a. A coil spring 21 for contacting the electrode portion of the battery 35 is attached to the other end 14b side of the power supply case 14, and the upper wall portion 14
A locking hole 14d is bored at a predetermined position facing the peripheral wall of the socket 12 of c.

A coil spring 20 for contacting the electrode portion of the battery 35 is attached to the rear end portion 11b of the housing portion 11a of the housing 11, and the end portion 20a is connected to the electric circuit 30 (FIGS. 2 and 3). It is connected.

A slit 12e is provided in the peripheral wall of the socket 12 facing the power supply case 14 in the axial direction, and a hole 12f is provided at a position continuous with the slit and facing the hole 14d of the power supply case 14.
A locking member such as a leaf spring 18 is fitted inside. One side 18a of this plate spring 18 has a slit 12
e, the other side 18b is bent into a substantially V shape to form a locking part, and the end 18c is fixed in the socket 1.
It is located at the open end of 2. The locking portion 18b of the leaf spring 18 is recessed into the hole 12f of the socket 12 and the hole 14d of the power supply case 14 as shown in the figure.
This prevents the power supply case 14 from deviating toward the front of the housing (in the direction of arrow C). The lock mechanism 19 is constructed in this way.

In a normal state, the leaf spring 18 is recessed into the slit 12e of the socket 12, as shown in FIG. socket 1
The plug 2 can be inserted into the inside of the plug 2.
When taking out the power supply case 14 from the housing 11, push up the end 18c of the leaf spring 18 upward (in the direction of arrow D) as shown in FIG. After releasing the locking relationship between the locking portions 18b and the holes 14d, the power supply case 14 is pulled out toward the front (in the direction of arrow C). Note that when the locking relationship between the locking portion 18b and the hole 14d is released, the power supply case 14 is pushed out to some extent by the contact spring 20.

The electric circuit 30 includes a transmitting circuit, a receiving circuit, a disconnection detection circuit, a driving circuit, etc. (not shown), and
A pulse signal outputted from the transmitting circuit is applied to the light emitting element in the plug 2 to cause it to emit light, and the optical signal is propagated through the optical fiber in the strip 1 to the light receiving element in the caulking fitting 3, and the receiving circuit causes the light emitting element to emit light. After detecting the received pulse signal from the light receiving element, the disconnection detection circuit detects the disconnection of the optical fiber, that is, the flexible strip 1, based on the transmitted and received signals, and when the disconnection occurs, the alarm 31 is activated via the drive circuit. It is designed to activate and generate an alarm.
In addition, the disconnection detection circuit connects the plug 2 connector and the housing 1.
When both connectors are connected, that is, when plug 2 is inserted into socket 12, the power is turned on and the anti-theft device is activated. When the device is not connected, that is, when the plug 2 is removed from the socket 12, the power is turned off to put the device in an inoperable state.

As shown in FIG. 6, this housing 11 is installed at a predetermined location of the motorcycle 40, for example, between a main frame 41 and a rear steering wheel 42, and a gazette 4 that connects these.
It is firmly fixed in a generally triangular space in the upper part of 3 with a bolt or the like via a mounting fitting (not shown) so that it cannot be easily removed.

When using an anti-theft device having such a configuration, first, as shown in FIG.
After inserting the plug 2 into the housing 11, the plug 2 is inserted into the socket 12 of the housing 11. That is, the flexible strip 1 is tied in a lasso style. When the plug 2 is completely installed in the socket 12, the spring 17 holds the tip 16a of the pin 16.
is projected and fitted into the notch 2c (FIG. 1) of the plug 2, and the plug 2 is locked and fixed to the housing 11. Further, when the plug 2 is attached, the locking relationship between the locking portion 18b and the power supply case 14 cannot be released from the outside of the housing 11 as described above, and the power supply case 14 cannot be removed from the housing 11. It cannot be taken out.

In the above state in which the plug 2 is completely attached to the housing 11, the electric circuit 30 is activated and the alarm 31 is not activated unless the flexible strip 1 is cut.

However, when the flexible strip 1 is cut with a wire cutter or the like, the optical fiber and electric wire within the strip are also cut, and the breakage detection circuit detects this and sends an alarm via the drive circuit. 31 to sound an alarm and notify the theft.

When the driver removes the flexible strip 1 from the housing 11, the driver inserts the key 36 into the keyhole 13a of the lock body 13 and rotates it to the off position (FIG. 2). In this off position, as described above, the tip 16a of the locking pin 16 comes off the notch 2c of the plug 2, and the locking relationship between the plug 2 and the socket 12 is released. Therefore, the plug 2 can be removed from the housing 11. Also, at this time, the power is turned off as described above, and the electric circuit 3
0, the alarm 31 becomes inactive.

In this way, theft is prevented.

In addition, the battery of the power source 35 may be a normal dry battery.
Alternatively, a rechargeable battery may be used.

As explained above, according to the present invention, the power supply case detachably housed in the casing of the anti-theft device is attached to the casing when the device is operated, that is, when the flexible strip is connected to the casing. Since the power supply case is fixed in a non-removable manner, there are advantages such as the ease of handling the device and the ability to easily configure the locking mechanism.

[Brief explanation of the drawing]

FIG. 1 is an external view showing an embodiment of the flexible strip used in the anti-theft device according to the present invention, FIG. 2 is a front view of the anti-theft device according to the present invention, and FIG.
A-A' line arrow view in the figure, Figure 4 is B- in Figure 2.
A view taken along line B', FIG. 5 is an explanatory diagram of the operation of attaching and detaching the power supply case shown in FIG. 4, FIG. 6 is a diagram showing the device shown in FIG. 2 installed on a motorcycle, and FIG. FIG. 2 is a diagram illustrating the use of this device. DESCRIPTION OF SYMBOLS 1... Flexible strip, 2... Plug, 3... Crimping metal fitting, 10... Device main body, 11... Housing, 14... Power supply case, 19... Lock mechanism, 30... Electric circuit, 31
...Alarm, 35...Power supply, 40...Motorcycle.

Claims (1)

[Claims] 1 comprising a casing and a flexible strip connected to the casing to connect the casing to a structure to prevent theft, detecting disconnection of the flexible strip and triggering an alarm. In the anti-theft device to be activated, a power supply case that houses a dedicated power source for supplying power to the anti-theft device is removably housed in the housing, and the flexible strip is connected to the housing. An anti-theft device comprising a lock mechanism for fixing the power supply case.