JP2001342771A - Wire lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wire lock for a bicycle, which activates an alarm before a wire is completely cut (segmented), can prevent the thief from running away by the bicycle per se, and threrefore has a high anti-theft effect. SOLUTION: The wire lock is comprised of a lock main body 1 including a fitting portion 12 to be locked, and a locking means 17, and a wire body 2 including a fixed end 21 to be fixed to the lock main body 1 and an engaging end 22 to be detachably fitted into the fitting portion 12 to be locked. The wire body 2 is formed by covering an electrical conductor 23 with a sheath body 24, and power is applied from a power source portion 16 of the lock main body 1 to the electrical conductor 23 when the engaging end 22 is fitted into the fitting portion 12 to be locked and locked by the locking means 17. On the other hand, when the electrical conductor 23 becomes non-conductive, an alerting means 14 of the lock main body 1 is activated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire lock for preventing theft of a motorcycle such as a bicycle.

[0002]

2. Description of the Related Art A conventional wire lock comprises a lock body and a wire. The wire is configured by covering a core wire (twisted steel wire) having a certain length with an outer package such as a vinyl tube. One end (fixed end continuous with the core wire) of this wire is fixed to the lock body, and the other end (engagement end continuous with the core wire) is fitted into and disengaged from the lock fitting portion of the lock body. (Not shown).

In use, the free end of the wire is engaged with the engaging end of the bicycle wheel by inserting the engaging end into the locking fitting of the lock body. . Then, the key is inserted into the locking means (operation unit) of the lock body, and this engaged state is locked. This allows
The wire and the lock body form a ring that goes around, and the bicycle cannot run.

[0004]

In recent years, the anti-theft wire lock has a complicated and precise mechanism for locking the lock body, in conjunction with the sophistication of bicycles. For this reason, unlocking without a key requires a great deal of time even for an expert. On the other hand, in recent years, strong wire cutters are commercially available at low cost. With this wire cutter, the wire of the anti-theft wire lock can be easily cut. As a result, the number of bicycle thefts caused by wire cutting has increased significantly.

The present invention can solve the above-mentioned problems, activate an alarm before the wire is completely cut (cut), and prevent a thief from riding on the bicycle and fleeing. An object of the present invention is to provide a wire lock having a high anti-theft effect.

[0006]

In order to achieve this object, a wire lock according to the present invention has the following configuration. The wire lock includes a lock body including a lock fitting portion and a lock unit, a wire body including a fixed end fixed to the lock body and an engagement end that fits into and disengages from the lock fitting portion. The wire body is formed by covering an electric conductor with an exterior body, and in a state where the engaging end is fitted to the lock fitting portion and locked by the locking means, the electric conductor is connected to the electric power source of the lock body. The alarm means of the lock main body is activated when the electric conductor is turned off and the electric conductor becomes non-conductive.

[0007] In the wire lock having such a configuration,
A power supply unit of the lock body is electrically connected to an alarm unit (buzzer), a transistor, and a wire body (a terminal portion of a fixed end portion connected to an electric conductor has a contact portion of one electrode of the power supply portion). .

[0008] When the engaging end portion connected to the wire body (electrical conductor) is fitted into the locking fitting portion and locked, the terminal portion of the engaging end portion is connected to the contact portion of the other electrode of the power supply portion. By connecting, the wire body (electric conductor) is energized. When the lock body and the wire form a ring, no base current flows through the transistor connected in series with the buzzer. Therefore, the buzzer is not energized.

On the other hand, when the wire body (electric conductor) is energized, when the wire body is cut by a cutter and the internal electric conductor is cut off, the electric conductor becomes non-conductive. As a result, the base current of the transistor flows, and the current also flows between the emitter and the collector.

[0010] At this point, only the internal electric conductor of the wire is cut off, and the outer package (covering tube) is not cut off. Therefore, at this time, the bicycle is still in a state where it cannot travel, and the bicycle can be prevented from being stolen.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of a wire lock according to the present invention will be described with reference to the drawings.

As shown in FIG. 4, the wire lock has a lock body 1 and one end fixed to the lock body 1 and the other end fixed to the lock body 1.
And a wire body 2 which engages with and disengages from The wire body 2 is
An electric conductor 23 having a fixed length is covered with an exterior body 24 such as a vinyl tube. In the embodiment shown in FIG. 4, as the electric conductor 23, a core material (core wire) of a conventional wire, which is a core wire (twisted steel wire) obtained by twisting a thin metal wire, is also used as the electric conductor.

One end of the wire body 2 (the electric conductor 23)
(Fixed end portion) 21 which is continuous with the lock body 1. That is, as shown in FIGS. 1 and 2, the lock main body 1 is fitted and fixed to the fitting fixing portion 11 of the lock body 1. In this fitted state, the terminal portion (metal terminal portion continuous with the electric conductor 23) 21a of the fixed end portion 21 is in contact with a contact portion 16a of the lock body 1 described later. The contact portion 16a is connected to one electrode of the power supply 16 described later.

The other end of the wire body 2 (the electric conductor 2)
The engagement end portion 22 which is continuous with the third engagement portion 22 is set so as to be removably engaged with the lock fitting portion 22 of the lock body 1. In this fitted (engaged) state, the terminal portion (metal terminal portion continuous with the electric conductor 23) 22a of the engagement end portion 22 is
It comes into contact with the contact portion 16b of the lock body 1. This contact portion 26b
Is connected to the other electrode of the power supply unit 16 described later.

As shown in FIGS. 1 and 2, the lock body 1 has a cylindrical hole 1A passing through the lock body (case body) 1.
One of the cylindrical holes 1A is a fitting fixing portion 11 for fitting the fixed end 21 of the wire body 2, and the other is a fitting for locking in which the engaging end 22 of the wire body 1 is fitted. Part 1
It is 2. That is, the fitting portion 11 and the locking fitting portion 12 communicate with each other.

A spring plate-like contact portion 16a slightly protruding toward the center of the hole is provided in a circumferential groove of the wall of the hole 1A on the fixed end portion 21 fixing side of the cylindrical hole 1A. A spring plate-like contact portion 16b slightly protruding toward the center of the hole is provided in a circumferential groove of the wall of the hole 1A on the portion 12 side. When the terminal portion 21a of the fixed end portion 21 contacts the contact portion 16a, and the terminal portion 22a of the engagement end portion 22 contacts the contact portion 16b, both contacts 16a and 16b conduct, and the power supply 16 connects the wire member. (Inner electric conductor 23) 2 is energized.

Further, in the lock body 1, the cylindrical hole 1A is provided.
The orthogonal hole 1B which communicates orthogonally is provided in the center of the length. The lock means 17 is provided in the orthogonal hole 1B. The locking means 17 includes an urging plate 17a and a lock operating unit 13 linked to the urging plate 17a. The urging plate portion 17a and the lock operating portion 13 are urged outward by the spring 17b, and the distal end portion (key insertion opening 13a) of the lock operating portion 13 protrudes outward.

A circular hole 1 is formed in the base end surface of the urging plate 17a.
7c is open. This circular hole 17c is
It communicates with A. Further, the cylinder 17 is inserted into the circular hole 17c.
7e is fitted. The reciprocating cylinder 17e is provided with a spring 17d.
Is attached to the fixed end portion 21 through the lock fitting portion 12.
And the fitting state is maintained.

In the fitted state of the advancing / retreating cylinder 17c, the base end of the urging plate 17a (the outer end of the base end of the circular hole 17c) is fitted into the concave portion 12b which is expanded outward from the cylindrical hole 1A. ing. As a result, the lock operating section 13, which is originally urged outward by the spring 17 b, is slightly drawn into the lock body 1.

When the engaging end portion 22 of the wire body 2 is fitted into the cylindrical hole (locking fitting portion 12) 1A, the distal end pushing portion 22c retreats the advance / retreat cylinder 17e against the spring 17d. . Then, as shown in FIG.
The small-diameter shaft portion 22b at the lower part of FIG.
The fitting position. As a result, the outer edge of the circular hole 17c moves by the force of the spring 17b and engages with the small-diameter shaft 22b.

The locking operation section 17 of the locking means 17 is
Known operating means for locking and unlocking the engaged state between the engagement end portion 22 and the lock fitting portion 12 is employed. For example, a known disk lock mechanism or the like that operates by inserting and removing the key 13b from the key insertion port 13a is used.

FIG. 3 is an explanatory diagram of a specific wire-shaped circuit shown in the embodiment. Power supply unit 16 and buzzer 14
, The transistor 15, the volume 18, the resistor 19, and the electric conductor 23 of the wire 2 are electrically connected to each other.

As the power supply section 16, a dry battery or a battery such as a lead storage battery or an alkaline storage battery is used. In the embodiment, a nickel cadmium storage battery is used.

The buzzer 14 and the transistor 15 are connected in series, and the volume 18 and the resistor 19 are connected in series. The volume 18 is mainly for adjusting the current on the circuit with respect to the resistance of the transistor 15 and the electric conductor 23. The resistor 19 is a resistor for a base current, which reduces the current consumption of the power supply unit 16 and protects the transistor 15.

In the wire lock having such a configuration,
As shown in FIG. 5, an engaging end 22 which is a free end of the wire body 2 is inserted between spoke lines B of a rear wheel A of a parked bicycle, for example. As shown in FIG. 2, in this state, the lock fitting portion (cylindrical hole portion 1A) 12 of the lock body 1 is set.
Is in an empty cylinder state.

Here, the engaging end portion 22 is connected to the locking fitting portion 1.
2, the front end pressing portion 22c is pushed by the urging plate 17a.
The reciprocating cylinder 17e located in the circular hole 17c of FIG.
And the pushing portion 22c is simultaneously inserted into the circular hole 17c.
Penetrate through.

Thus, as shown in FIG. 1, when the small-diameter shaft portion 22b is positioned in the circular hole 17c, the biasing plate 17a is slightly moved toward the distal end by the smaller diameter of the small-diameter shaft portion 22b. Thereby, the engagement state (engagement state) of the engagement end portion 22 is achieved.
Is held, and in this state, the terminal portion 22a is
6b. This engaged state is locked by locking means (locking operation section 13) 17.

As shown in FIG. 3, in this state, the current of the power supply 16 flows from the volume 18 and the resistor 19 to the electric conductor 23 inside the wire 2. However, the base current of the transistor 15 does not flow. That is, the buzzer 14
The transistor 15 does not conduct due to its internal resistance. Therefore, the buzzer 14 does not sound.

Now, not only when the wire body 2 is cut, but also a violent and strong force is applied to the wire body 2 so that the terminal portion 22a (21a) and the contact portion 16b (16a) are applied.
In a case such as a case where a poor electrical contact is made, the electrical conductor 23 is in a non-conductive state.

As a result, the current of the power supply 16 flows through the volume 18 and the resistor 19, and the base current of the transistor 15 flows. As a result, current flows between the collector and the emitter. That is, since a current flows between the collector and the power supply section 16, the buzzer 14 is energized and sounds. Thus,
The transistor 15 functions as a non-contact switch, and the buzzer 14 is turned on and off when the transistor 15 is turned on and off. Therefore, the buzzer 14 sounds at a stage before the wire body 2 is completely cut (cut), that is, at the time when the electric conductor 23 is turned off.

FIG. 6 is an explanatory sectional view showing another embodiment of the wire body 2. In the previous embodiment (see FIG. 4), an example is shown in which the core material (core wire) of the wire itself is also used as the electric conductor 23, but in this embodiment, the wire body 2 is formed of the core material (core wire) of the wire. In addition, three electric wires 23a each coated with insulation are used.

In this embodiment, three electric wires 23b are respectively provided on the outer periphery of the central core wire 23b at a predetermined angle (12
0 °), and each of the three electric wires 23b constitutes each electric conductor 23. Then, any of the electric wires 23b
Is disconnected, the buzzer 14 is set to sound. In this embodiment, no matter where the outer surface of the wire body 2 is cut, the buzzer sounds at a rapid point in time before the wire body 2 is cut (divided).

In the embodiment, only the sound of the buzzer 14 is described as an example of the alarming means. However, when the buzzer 14 sounds, the light source (eg, LED) is set to be turned on in synchronization with the sounding. Is also good.

In the embodiment, the buzzer 14 sounds when the engagement end 22 is detached from the lock fitting portion 12, so that the remaining power (battery) can be easily known. On the other hand, after removing the engagement end portion 22 from the lock fitting portion 12,
To stop the buzzer 14 from sounding, for example, a separate switch section is provided at an appropriate position of the lock fitting section 12 (not shown),
Until the engaging end 22 is inserted (engaged), it is possible to set so that the electric circuit is not driven.

When a dry battery is used as the power source, the opening / closing lid of the power supply box of the lock body 1 engages with the locking end portion 12 with the locking fitting portion 12 (not shown).
The opening / closing lid is also set to be locked in the closed state when locked by the locking operation unit (key 13b) 13.

[0036]

According to the present invention, as described above, one end of the wire body for covering the electric conductor with the exterior body is fixed to the lock body, and the other end of the wire body is engaged with the lock fitting portion of the lock body. While the electric conductor is energized in a state where the electric conductor is locked, the alarm means is activated in a non-conductive state of the electric conductor. Therefore, the wire body is cut with a cutter, and the internal electric conductor is cut (divided). At this point, the electrical conductor becomes non-conductive, and the buzzer sounds instantly. Therefore, the buzzer sounds before the entire wire body is cut off, so that the thief cannot escape on a stolen bicycle, and complete theft prevention can be realized. Also, even if the electric conductor is not cut, if a rough and powerful pulling force is applied to the wire body,
Even if the contact failure of the contact / terminal occurs, the electric conductor becomes non-conductive, and the buzzer can be sounded before the wire is cut. Furthermore, when the electric conductor is composed of a plurality of electric wires, and each electric wire is arranged on the outer periphery of the core wire, even if any part of the wire body is cut, an alarm is issued at a very early stage before the core wire is cut. It has an excellent effect of achieving the object of the invention, such as being able to achieve complete theft prevention by sounding.

[Brief description of the drawings]

FIG. 1 is an explanatory cross-sectional view of a main part of a wire lock showing a locked state in which an engaging end is engaged with a locking fitting portion.

FIG. 2 is an explanatory cross-sectional view of a main part of the wire lock, showing a state where an engagement end is removed from a lock fitting portion.

FIG. 3 is a circuit diagram of the wire lock according to the embodiment.

FIG. 4 is a perspective view showing a wire lock.

FIG. 5 is a perspective view showing a state where a wire lock is used for a bicycle.

FIG. 6 is a sectional view showing another embodiment of the wire body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lock main body 2 Wire body 11 Fitting fixing part 12 Locking fitting part 13 Locking operation part 14 Alarm means (buzzer) 15 Transistor 16 Power supply part 17 Locking means 21 Fixed end part 22 Engagement end part 23 Electric conductor 24 Outer tube 23a Electric conductor (electric wire)

Claims (3)

[Claims] 1. A wire body comprising a lock body having a lock fitting portion and a lock means, a fixed end fixed to the lock body, and an engaging end fitted into and disengaged from the lock fitting portion. The wire body is formed by covering an electric conductor with an exterior body, and in a state where the engaging end is fitted in the locking fitting portion and locked by the locking means, the power is supplied from the power supply portion of the lock main body. A wire lock characterized in that an alarm means of a lock body is activated when a current is supplied to a conductor and the electric conductor is turned off. 2. The wire tablet according to claim 1, wherein the wire body also uses a core wire covered by an exterior body as an electric conductor. 3. The wire body comprises a plurality of electric wires, each of which is insulated and coated on the outer periphery of a core wire, arranged in a circle and covered with an exterior body, and each of the plurality of electric wires constitutes an electric conductor; 2. The wire lock according to claim 1, wherein the alarm means is activated when any one of the electric wires becomes non-conductive.