JP2001279982A - Locking device and loop lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make unlocking operation easier for a lock device which can be unlocked by using a key. SOLUTION: When the linkage of a terminal 11 to a lock main body 9 is released by using a key K, then the terminal 11 is disengaged from the lock main body 9. That is, the terminal 11 can be separated from the lock main body 9 instead of merely releasing the linkage as in the conventional manner. That is, it is not required to separate the terminal 11 from the lock main body 9 each time, and thus a better operability can be realized. In addition, when the terminal 11 is linked to the lock main body 9, the locking can be completed without using the key K. That is, operation such as turning key K during locking becomes unnecessary. Thus, not only the unlocking but also the locking can be performed extremely easily.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device for unlocking using a key and a loop lock using the locking device.

[0002]

2. Description of the Related Art Conventionally, in order to prevent theft of a motorcycle such as a bicycle or a motorcycle, a terminal provided at one end of a wire or the like is engaged with a lock body provided at the other end to form a loop. Loop tablets are used. In this loop lock, a wire or the like is slid under spokes of a motorcycle when the loop is released, and a terminal is engaged with the lock body to form a loop. When the key is inserted into a keyhole formed in the lock body of the loop lock and rotated, the engagement cannot be released, and the motorcycle can be prevented from being stolen. When the key is rotated in the reverse direction, the engagement is released, and the motorcycle can be used.

[0003]

However, according to the above-mentioned prior art, it is necessary to insert a key and rotate it each time locking or unlocking is performed. In particular, two-wheeled vehicles are often parked close to other two-wheeled vehicles, and therefore such operations are often perceived as troublesome. This problem can also occur in a locking device that performs locking and unlocking using a key, even if the device is not a loop lock.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to facilitate an unlocking operation. A locking device according to a second aspect is intended to facilitate not only an unlocking operation but also a locking operation.

[0005] Still further, the locking device according to claim 3 is
7 shows an example of a specific configuration of the locking device of claim 2. The loop lock according to the fourth aspect is exemplified as a preferred embodiment of the locking device of the present invention.

[0006]

According to the first aspect of the present invention, a terminal is detached from the lock body when the terminal is disengaged from the lock body using a key. I do. That is, when trying to release the engagement with the key, the terminal is separated from the lock main body in addition to simply releasing the engagement as in the related art. Therefore, according to the locking device of the first aspect, it is not necessary to separate the terminal from the lock body each time, and the operability is good.

In the locking device according to the second aspect, when the terminal is engaged with the lock body, the locking is completed without using a key. That is, when locking, an operation such as rotating the key is not required. Then, similarly to the locking device of the first aspect, when unlocking, the terminal is detached from the lock body by operating the key. Therefore, according to the locking device of the second aspect, not only unlocking but also locking can be performed extremely easily.

In order to realize the locking device of the second aspect,
As an example, it is conceivable to make it as in claim 3. That is, in the locking device according to the third aspect, the terminal is provided with a bar-shaped cannula, and is engaged when the cannula is inserted into a lock hole formed in the lock body. This engagement is achieved by the steel ball entering into a hemispherical (but shallower than) hemispherical recess formed in the side surface of the canker. The sphere is placed in a guide hole that communicates the lock hole with a rotor housing formed in the lock body. In the locked state, the sphere is kept immovable by being immovable. This immovable state is created as follows. That is, a cylinder rotor that is rotated by a key is installed in the rotor housing, and each state of unlocking and locking is created by rotating the cylinder rotor.
The cylinder rotor has a concave portion into which a sphere enters, and this concave portion is formed at a position facing the guide hole only in the unlocked state. In other words, in the locked state, a portion of the cylinder rotor where the concave portion is not formed (referred to as a non-recess portion) faces the guide hole. The rotor accommodating portion and the lock hole are separated by a distance shorter than the diameter of the sphere, and the non-recess faces the guide hole so that the sphere protrudes toward the lock hole and becomes immovable.

In this state, the cannus are urged in a direction in which the cannus is pulled out by cap urging means via a cap slidably installed in the lock hole. The cap is a columnar or covered tubular member (hereinafter, the cap is referred to as a covered tubular member for simplicity of description). Although this urging force also acts on the sphere, a part of the urging force acts as a force to move the sphere along the guide hole toward the rotor accommodating portion because the depression is made shallower than the hemisphere. This movement is prevented by the non-recess.

To unlock, the cylinder rotor is rotated using a key. Then, the concave portion faces the guide hole, and the sphere escapes from the concave of the kanuki (ie, the engagement is released) and enters the concave portion by the action of the urging force of the cap urging means.
When the engagement is released, the knuckle is pushed by the cap receiving the urging force of the cap urging means, and comes out of the lock hole. That is, the terminal is detached from the lock main body, and is in an unlocked state.
The cap which has been subjected to the biasing force is slid, and covers the lock hole with its lid, and closes the guide hole with its side surface.

The cylinder rotor receives torque from the angle in the unlocked state to the angle in the locked state by the torque generating means. The recess is shaped to bias the sphere toward the lock hole by this torque. As such a shape, a dent having the same shape as the dent of Kannuki, a groove having a cross section slightly smaller than a semicircle having the same diameter as this, a groove having a triangular cross section, and having a slope contacting a sphere when unlocked. And the like. When the recess is realized by a groove, the direction is not set to the circumferential direction of the cylinder rotor. As described above, the sphere cannot move because the guide hole is closed by the side surface of the cap as described above, even when biased by the shape of the recess and the torque generating means. As a result, the cylinder rotor cannot return to the locked state despite receiving the torque of the torque generating means.

[0012] In order to set the locked state, insert the cannon into the lock hole. This is performed against the urging force of the cap urging means. As a result, the cap that has closed the guide hole slides, and instead, the canker enters the lock hole. And when the dent of the kanuki faces the guide hole,
By the above-mentioned bias, the sphere enters the depression and exits the depression. As a result, the cylinder rotor becomes rotatable, receives the torque of the torque generating means, and rotates to the angle in the locked state. .

As described above, according to the configuration of claim 3,
When the key is turned for unlocking, the kanuki comes out of the lock hole, that is, the terminal is detached from the lock body only by using the key, and there is no need to pull out the kanuki from the lock hole. In order to perform locking, one aspect of the locking device according to claim 2 is that the key is only to be inserted into the lock hole, that is, the terminal only needs to be engaged with the lock body, and it is not necessary to turn the key in the opposite direction as before. Has been realized.

The torque generating means may be an elastic member such as a coil spring, a torsion coil spring, a plate spring, or an air spring, or a means utilizing a repulsive force of a magnetic force as a torque. ).
Further, contrary to the description of the third aspect, the components may be appropriately replaced as long as they have substantially the same functions as those of the above-described configurations.
For example, instead of a sphere, two hemispheres having the same diameter may be connected by a cylinder having the same diameter. This makes it possible to lengthen the guide hole by the length of the column (extend the distance between the lock hole and the rotor housing portion). In addition, the dent of the kanuki is shaped so that the surface that becomes the cap side at the time of locking can engage with the sphere,
The shape is not limited to a hemisphere as long as the sphere is urged toward the rotor housing portion by the urging force of the cap urging means. For example, the surface on the side opposite to the cap may have any shape as long as the sphere enters the dent, or the dent may be formed around the perimeter to form a circumferential groove.

[0015] The loop tablet according to the fourth aspect is the first aspect.
13 is an application example of the locking device of No. 3; For example, in the locking device of claim 1, if the terminal and the lock main body are connected by a bendable or bendable long member to form a loop lock, the terminal can be released from the lock main body only by using a key to release the loop. Becomes In the locking device of the second aspect, if the terminal and the lock body are connected by a long member, a loop is formed only by engaging the terminal with the lock body, and the lock cannot be unlocked unless a key is used. Examples of the “bendable or bendable long member” include a wire, a chain, and a plurality of links connected by a hinge. Of course, these may be covered with a synthetic resin or covered with a tube.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. First, FIG. 1 is a front view of a loop lock 1 to which the present invention is applied. The loop lock 1 has a loop-like structure in which sleeves 5a and 5b are rotatably attached to the locking device 3 at points P and Q, respectively, and 5a and 5b are connected by wires 7 covered with a synthetic resin. . The locking device 3 includes a substantially cylindrical lock body 9 and a terminal 11, and inserts a key K into a keyhole formed on the right side of the locking device 3 as shown in FIG. , The terminal 11 is detached. In FIG. 2A, the sleeves 5a and 5b and the wire 7 are omitted, and only the locking device 3 is shown. By releasing the terminal 11 from the lock body 9 in this manner, the loop is released, and the wire 7 is passed between the spokes of the motorcycle.
By engaging the terminal 11 with the lock body 9 and forming a loop again, theft of a motorcycle or the like is prevented. By applying this, it is of course possible to prevent theft if it is provided with a closed loop-shaped portion like a wheel. In addition,
In FIG. 1, what is indicated by reference numeral 12 is a protector made of polyvinyl chloride. The protector 12 is used to prevent the lock body 9 from hitting the motorcycle body and damaging the vehicle body when the loop lock 1 is used for a motorcycle or the like, and is wound around the side surface of the lock body 9.

FIG. 2B is a view of the terminal 11 as viewed from the direction of arrow A.
As shown in this figure, the terminal 11 is provided with a substantially cylindrical cannula 13, which is inserted into a lock hole (described later) formed in the lock body 9 when locking. On the side surface of the kanuki 13, a depression 15 having a slightly shallow hemisphere is formed.

FIG. 2C is a sectional view of the lock body 9 taken along the line BB (see FIG. 1). In a space 16 inside the lock body 9, a substantially cylindrical cylinder rotor 1 which is rotated together with the inserted key K is provided.
The end face 23 has a shape formed by combining a circle and a sector as shown in FIG. A groove 19 is formed from the outer peripheral portion of the sector toward the axis of the cylinder rotor 17. The cross section of the groove 19 is
It has a semicircular shape with the same diameter as that (to be exact, slightly smaller than the semicircle).

A circular hole 21 is formed at the axial position of the cylinder rotor 17. The cylinder rotor 17 receives a clockwise torque in this figure by a torsion coil spring described later. Nevertheless, the reason why the cylinder rotor 17 is stopped at the position shown in the drawing is that the rotation angle is regulated by a key (not shown). In FIG. 2A,
When the terminal 11 is detached from the lock body 9, the cylinder rotor 17 rotates 90 degrees counterclockwise in FIG. 2C, and the end face 17 a of the fan-shaped portion contacts the end face 9 a on the lock body 9 side. Become.

FIG. 3A shows a cross section taken along the line CC of the lock body 9 (however, the terminal 11 is detached from the lock body 9). Note that a mechanism in which the cylinder rotor 17 is rotated only by an appropriate key K is a traditional cylinder lock, and a pin tumbler and a keyhole into which the key K are inserted exist in the lock body 9. Since it is a mechanism, it is omitted in this drawing. As shown in this figure, in this state, the groove 19 of the cylinder rotor 17 faces upward, and the steel ball 25 enters therein. The steel ball 25 has the same diameter as the groove 19 and the depression 15,
A guide hole 27 that connects the space 16 in the lock body 9 and the lock hole 26 into which the cannon 13 is inserted in the left-right direction in the figure.
Has been put in. The guide hole 27 is slightly tapered on the lock hole 26 side, so that the steel ball 25 does not fall into the lock hole 26.

Since the cross section of the groove 19 is slightly smaller than the semicircle as described above, the steel ball 25 is urged leftward in the drawing by the torque received by the cylinder rotor 17. A cap 28 is provided on the left side of the steel ball 25 to prevent the steel ball 25 from moving to the left from the position shown in the figure. As a result, despite receiving the torque, the cylinder rotor 17 cannot rotate due to being hindered by the steel balls 25, and remains in the state of FIG. The coil spring 29 urges the cap 28 upward in the figure, and the lower end thereof is stopped by a stopper 31. Reference numeral 33 denotes a pin for fixing the stopper 31, and reference numeral 35 denotes a torsion coil spring that exerts the torque.

FIG. 3B shows a state in which the cannula 13 is inserted into the lock hole 26. This operation is performed with the cap 28 against the elastic force of the coil spring 29. As shown in this figure, the end surface 11a of the terminal 11 is the end surface 9b of the lock body 9.
, The position of the recess 15 is aligned with the position of the guide hole 27, and the steel ball 25 urged to the left fits into the recess 15. As a result, the cylinder rotor 17 is rotated 90 degrees by the torque of the coil spring 35 because there is no obstacle that hinders the rotation. In this state, Kannuki 13
It is urged upward via the cap 28 by the elastic force of the coil spring 29. The steel ball 25 fitted into the recess 15 of the kanuki 13 is urged rightward in the figure by the kanuki 13 receiving this urging, but by contacting the end face 23 a of the cylinder rotor 17, FIG. 3 (b)
Stay in position. As a result, Kannuki 13 is locked hole 2
I can't get out of 6. This is the locked state.

To unlock, the key K is inserted into the keyhole and rotated counterclockwise in FIG. 2 (c). This is performed against the torque of the torsion coil spring 35.
When the cylinder rotor 17 is rotated 90 degrees in the same direction by this rotation, the groove 19 is located to the right of the guide hole 27 in FIG. As a result, the steel ball 25 moves rightward and comes out of the depression 15. As a result, the terminal 11 moves upward due to the resilience of the coil spring 29, and the cannula 13 comes out of the lock hole 26, and the state shown in FIG.

That is, in the locking device 3, the locking is performed only by inserting the screw 13 of the terminal 11 into the lock hole 26, and there is no need to rotate the key K. In addition, to unlock, simply insert the key K into the keyhole and rotate it 90 degrees.
Since the terminal 1 is separated from the lock body 9 so as to jump up, there is no need to pull out the terminal 11 from the lock body 9. Thus, in the locking device 3, both locking and unlocking can be easily performed.

Here, the correspondence between the configuration of the present embodiment and the configuration of the present invention will be described. The steel ball 25 corresponds to a sphere, and the groove 1
9 corresponds to a concave portion, the space 16 of the lock body 9 corresponds to a rotor accommodating portion, the coil spring 29 corresponds to cap biasing means, and the torsion coil spring 35 corresponds to torque generating means.

As described above, the loop tablet 1 has been described as one embodiment of the present invention. However, the present invention is not limited to this embodiment and can be implemented in various modes. For example, the angle at which the cylinder rotor 17 is rotated at the time of unlocking need not be 90 degrees, but may be 45 degrees, 60 degrees, 180 degrees, or the like. Of course, the direction of rotation at the time of unlocking may be reversed. Instead of a traditional cylinder lock, a lock that moves a pin tumbler or the like using the magnetic force of a magnet attached to a key may be used.

Although the portion into which the steel ball 25 is fitted at the time of unlocking is the groove 19 having a substantially semicircular cross section, other shapes may be used. For example, a substantially hemispherical depression similar to the depression 15 may be used. Further, since the steel ball 25 only needs to be urged leftward in FIG. 3 by the urging force of the torsion coil spring 35, the groove may have a rectangular or triangular cross section.

The direction in which the kanuki 13 is inserted is not set in the radial direction as in the locking device 3 but in a direction along the axis (for example, the direction opposite to the direction in which the key K is inserted from the side opposite to the surface having the keyhole). You may do it. In this case, the lock body 9 is
The lock hole 26 may be formed beside the cylinder rotor 17 by increasing its diameter or making the cross section oval or the like. The groove 19 is formed not in the end face 23 of the cylinder rotor 17 but in the periphery thereof, in parallel with the axial direction. At this time, the steel ball 25 is moved in the radial direction.

The depression 15 is not limited to a hemispherical shape, but may be formed as a circumferential groove formed by rotating the depression 15 around the axis of the kanuki 13. When the shape of the terminal 11 is further changed in this way, it is possible to rotate the terminal 11 around the axis of the screw 13 in a locked state. An example of changing the shape of the terminal 11 will be described below with reference to FIG. That is, the circumferential portion 39 is discharged from the terminal 11. This allows the terminal 11 to be rotatable around the axis of the cannula 13 while being locked. In accordance with this, the position of the ear piece 41 of the lock main body 9 is changed to a position where the stopper 31 (see FIG. 3) is provided, and further, it is made rotatable about the same axis as the axis of the kanuki 13 at the time of locking. As it is, the lock body 9 can be freely rotated around the axis. In many cases, it is difficult to freely move the wire 7 in the locked state. Therefore, if the lock body 9 can be rotated in this way, the keyhole can be oriented in a desired direction, which is convenient.

The locking device 3 may be applied to something other than a loop lock. For example, the lock main body 9 is fixed to a hard-to-move object such as a wall, and an object that is difficult to use without permission is connected to the terminal 11.
Fixed to. In this case, only the person holding the key K can use the object fixed to the terminal 11. When the key K is used, the terminal 11 is automatically detached from the lock main body 9 as in the case of the loop lock 1, and when locking, it is only necessary to insert the terminal 11 into the lock main body 9, which is very convenient.

Although the protector 12 is made of polyvinyl chloride, the protector 12 may be made of another material having such flexibility that the vehicle body is not damaged even if it hits the motorcycle body.

[Brief description of the drawings]

FIG. 1 is a front view of a loop lock 1 to which the present invention is applied.

FIG. 2 is an explanatory diagram of a locking device 3.

FIG. 3 is a cross-sectional view for explaining a one-touch mechanism of the locking device 3.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Loop lock 3 ... Locking device 5a, 5b ... Sleeve 7 ... Wire 9 ... Lock main body 9a, 9b ... End surface 11 ... Terminal 11a ... End surface 13 ... Kanuki 15 ... Depression 16 ... Space 17 ... Cylinder rotor 17a ... End surface 19 ... Groove 23, 23a ... end face 25 ... steel ball 26 ... lock hole 27 ... guide hole 28 ... cap 29 ... coil spring 31 ... plug 33 ... pin 35 ... torsion coil spring K ... key

Claims (4)

[Claims] 1. A locking device comprising a lock body and a terminal engaged with the lock body, wherein the lock is released by releasing the engagement of the terminal with the lock body using a key. The locking device is characterized in that when the lock is released, the terminal detaches from the lock body. 2. The locking device according to claim 1, wherein when the terminal is engaged with the lock body, the locking is completed without using the key. 3. The locking device according to claim 2, wherein the terminal includes a kanuki, which is a rod-shaped member inserted into the lock body, and a hemispherical recess (but shallower than the hemisphere) on a side surface of the kanuki. ) Is formed, wherein the lock main body is installed in the lock main body, and is rotated by the key, a cylinder rotor, a rotor housing portion that is a space for housing the cylinder rotor, and the rotor housing portion. From a hole formed at a distance shorter than the diameter of the hemisphere, a lock hole into which the cannon is inserted, and a circular hole communicating the lock hole and the rotor housing portion, at least A guide hole having a diameter smaller than the diameter of the hemisphere, a sphere having a diameter substantially equal to the diameter of the hemisphere, and a sphere having a diameter substantially equal to the diameter of the hemisphere; A column-shaped or covered cylindrical member disposed at least at a bottom surface of the column-shaped member or a cover of the covered cylindrical member, closing the opening of the lock hole and closing the guide hole at a side surface thereof. A cap slidably disposed in a range from a position to a position where the guide hole is exposed; and moving the cap toward a position where the guide hole is closed by a side surface of the cap along the sliding direction. A cap urging means for urging the cylinder rotor from an angle in an unlocked state to an angle in a locked state, the cylinder rotor comprising: A concave portion facing the guide hole only at the angle of the lock state, and a concave portion for retracting the sphere to a position not protruding from the guide hole to the lock hole, In the degree, the sphere is moved in the direction of the lock hole so as to project from the guide hole into the lock hole, and the concave portion locks the sphere retreated in the concave portion by the torque of the torque generating means. The dent of the perforation is directed toward the hole, and the depression of the perforation faces the guide hole when the perforation is inserted into the lock hole against the urging force of the cap urging means. A locking device formed at a position where the locking device can perform the locking. 4. A loop lock, wherein the lock body and the terminal of the lock device according to claim 1 are connected by a bendable or bendable long member.