JP2006177091A - Connection cylinder lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection cylinder lock making a picking difficult by linking two or more of cylinder locks, and facilitating locking and unlocking. <P>SOLUTION: This connection cylinder lock 10 has mutually linking two or more of cylinder units 12A and 12B. In the cylinder units 12A and 12B, an outer cylinder 13 is fixed to a cylinder case 15, and an inner cylinder 14 is rotatably inserted into this outer cylinder 13. A lock mechanism for locking rotation of the inner cylinder 14 is built in the outer cylinder 13 and the inner cylinder 14. Linking gears 16 and 16 are fixed on the same axis of the inner cylinders 14 and 14, and are mutually connected so as to mutually transmit torque of the inner cylinders 14 and 14. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a connecting cylinder lock, and in particular, is applied to a crime prevention cylinder lock with countermeasures against picking.

A configuration example of a conventional cylinder lock is shown in FIG. The cylinder lock 1 includes an outer cylinder 2 and an inner cylinder 3, and a latch 4 is provided at an end of the inner cylinder 3. Pin holes H are juxtaposed in the cylindrical walls of the outer cylinder 2 and the inner cylinder 3, and the tumbler pins 5, the driver pins 6 and the compression springs 7 are accommodated in these pin holes H.
In a state in which the key K is not inserted into the key hole of the inner cylinder 3, the compression spring 7 biases the driver pin 6 toward the inner cylinder 3, and locks the inner cylinder 3 at the pin tip of the driver pin 6. When the key K is inserted into the key hole of the inner cylinder 3, the tumbler pin 5 pushes the driver pin 6 toward the compression spring 7 in accordance with the key groove, and the boundary between the tumbler pin 5 and the driver pin 6 is between the outer cylinder 2 and the inner cylinder 3. The inner cylinder 3 is unlocked. When the key K is turned in this state, the inner cylinder 3 is rotated with respect to the outer cylinder 2, and the latch 4 is switched to the locked position or the unlocked position.

  In recent years, a picking case in which such a cylinder lock is illegally unlocked has become a problem. The picking action is performed, for example, by inserting a special tool from the keyhole of the inner cylinder 3 and applying a load to the tumbler pin 5 to release the lock between the outer cylinder 2 and the inner cylinder 3.

Conventionally, as a countermeasure against such picking, there is one using two cylinder locks for one door. For example, two cylinder locks are attached in the vicinity of the handle of the entrance door with a vertical interval. According to this type of cylinder lock, the picking operation takes twice as long as when a single cylinder lock is used, and therefore a deterrent effect can be expected.
In addition, the following patent documents 1-3 are disclosed as a prior art relevant to a cylinder lock.

JP 2003-155856 A JP 2003-343137 A JP 2002-295075 A

However, in such a conventional cylinder lock, the door can be unlocked by repeating the same picking action as in the case of a single cylinder lock, and therefore there is a lack of reliability as a picking prevention measure.
Also, since the operation of locking and unlocking the two cylinder locks becomes cumbersome, only one cylinder lock may be used and the other cylinder lock may not be used for entrance doors that frequently open and close. , Picking measures may be insufficient.

  On the other hand, as shown in Patent Documents 1 to 3, a cylinder lock is known in which a main lock and an auxiliary lock are linked to strengthen countermeasures against picking. It is necessary to operate each cylinder lock in a predetermined order, such as turning the key of the auxiliary lock and then turning the key of the main lock later, making it easier to unlock and lock, and opening and closing the door Prone to inconvenience. Moreover, also in the structure of patent documents 1-3, if the picking is performed in the reverse order to the time of locking with respect to each cylinder lock, the door can be unlocked.

  The present invention has been made in view of such a current situation, and provides a connected cylinder lock that makes it difficult to perform a picking action by linking two or more cylinder locks and that is easy to lock and unlock. The purpose is to do.

[First invention]
The connecting cylinder lock of the present invention (first invention) for solving the above-mentioned problems is
A cylinder lock that links two or more cylinder units,
The cylinder unit is
An outer cylinder fixed to the cylinder case;
An inner cylinder rotatably inserted into the outer cylinder;
A lock mechanism for locking the rotation of the inner cylinder;
A linkage gear fixed coaxially with the inner cylinder,
The cooperating gears of the adjacent cylinder units are connected to each other so as to transmit the rotational force of the inner cylinder.

In the connecting cylinder lock of the present invention (first invention), when one inner cylinder of two or more cylinder units rotates, the rotational force is transmitted to the other inner cylinder via the linkage gear. If the rotation of any one of these inner cylinders is locked by the lock mechanism, all the associated gears are kept stationary, so that all the inner cylinders do not rotate. That is, only when all the lock mechanisms are released, all the inner cylinders can be rotated via the linkage gear.
As a result, even if an attempt is made to pick the connected cylinder lock, a special tool must be inserted into all the keyholes and the lock mechanism must be removed at the same time, making it extremely difficult to perform the picking action.
Also, even if a plurality of people try to pick, the cylinder units are kept relatively close to each other, so that it is difficult to handle special tools without taking up sufficient work space.

In addition, the connecting cylinder lock of the present invention (the first invention) is configured such that if only one key is rotated by inserting the key into the key hole of each cylinder unit, the force is also applied to the other key via the linkage gear. Communicated. Therefore, the key can be rotated only once, and the locking and unlocking operations can be easily performed.
Furthermore, since each cylinder unit is configured to cooperate, an artificial mistake such as forgetting to lock only one cylinder unit is also eliminated.

In the connecting cylinder lock of the first invention, the “lock mechanism” may be a pin type lock mechanism as shown in the conventional example, or a disk type or magnetic type lock mechanism. The “lock mechanism” may be a different type for each cylinder unit, or may be the same type. If the same key is used for all the cylinder units, the key is not mistakenly inserted into the keyhole, and the operability is further improved.
The means for connecting the “cooperative gears” is preferably one that transmits the rotational force of one inner cylinder to the other inner cylinder as it is, for example, a configuration in which the cooperating gears are directly engaged with each other. In this case, if the linkage gear is provided so as to have the same number of teeth and the same number of rotations, the rotation angles of the inner cylinders become equal, and the operability of locking and unlocking is improved. In addition, as a means for connecting the “cooperative gears”, one that engages an intermediate gear between the cooperating gears (second invention) or one that wraps an annular belt around each cooperating gear (third invention) may be used.
The “cylinder case” of the connecting cylinder lock may be of any shape and size as long as it has a structure for fixing the outer cylinder.

[Second invention]
The connecting cylinder lock of the present invention (second invention) comprises the structure of the first invention,
The linkage gears of the adjacent cylinder units are connected by engaging an intermediate gear between the linkage gears.

In the first invention, when the linked gears of the adjacent cylinder units are directly engaged with each other, the rotation direction of the inner cylinder is opposite for each cylinder unit. For this reason, when rotating the inner cylinder with a key, the rotation direction of the key must be distinguished according to the keyhole, and the operation of locking and unlocking tends to be troublesome.
According to the configuration of the present invention (second invention), the inner cylinder of each cylinder unit can be rotated in a unified direction by engaging the intermediate gear between the linkage gears. Thereby, in any key hole, the rotation direction of the key becomes the same, and the operability of locking and unlocking can be improved.

[Third invention]
The connecting cylinder lock of the present invention (third invention) comprises the structure of the first invention,
The respective linked gears of the adjacent cylinder units are connected by winding an annular belt around the linked gears.

According to the configuration of the present invention (third invention), the linkage gear of each cylinder unit is connected by the annular belt, and therefore the interval between the cylinder units can be set freely by adjusting the belt length. . Thereby, the freedom degree of attachment of the connection cylinder lock to a door etc. increases.
Further, since the inner cylinder of each cylinder unit is rotated in the same direction by the cooperation gear and the annular belt, the operability of the key at the time of locking and unlocking can be improved as in the case of the second invention.

[Fourth Invention]
The connecting cylinder lock of the present invention (fourth invention) comprises any one of the first to third inventions,
The locking mechanism is
A tumbler pin that is inserted into the pin hole of the inner cylinder and protrudes from the pin hole to the key hole of the inner cylinder;
A driver pin inserted into the pin hole of the outer cylinder and arranged in the axial direction of the tumbler pin; and a compression spring for urging the driver pin toward the tumbler pin in the pin hole of the outer cylinder,
The compression spring is provided at a bridging portion between the outer cylinders of the adjacent cylinder units, and the driver pins of the cylinder units are urged coaxially at both ends of the springs.

In the connecting cylinder lock of the present invention (fourth invention), adjacent cylinder units have pin type lock mechanisms, and these lock mechanisms share one compression spring. For this reason, when a load is applied to the tumbler pin of one lock mechanism, the load reaches the tumbler pin of the other lock mechanism via the compression spring.
Even if a special tool is used to apply a load to the tumbler pin of one lock mechanism to release the lock of the inner cylinder, the position of the previous tumbler pin is not changed when the load is applied to the tumbler pin of the other lock mechanism. The inner cylinder will shift to the locked state.
Thus, in the configuration of the fourth invention, since the tumbler pin and the driver pin are urged while maintaining the balance at both ends of the compression spring, the picking action becomes extremely difficult.

[Fifth Invention]
The connection key of the present invention (the fifth invention) is used for the connection cylinder lock according to any one of the first to fourth inventions,
Key body,
A handle attached to this key body,
A drive key that is provided on the key body and applies a rotational force to the inner cylinder of the connecting cylinder lock by operating the handle;
The key body is configured to include a driven key that is provided at a predetermined interval from the drive key and rotates by receiving a rotational force from the inner cylinder when the inner cylinder of the connecting cylinder lock is rotated.

  In the connection key of the fifth invention, when the drive key and the follower key are simultaneously inserted into the key holes of the connection cylinder lock, these lock mechanisms are simultaneously released, and all the inner cylinders can be rotated. When the handle is operated in this state, the inner cylinder with one drive key is rotated, and the other inner cylinder is rotated through the cooperation gear. And a driven key rotates with rotation of this inner cylinder.

  As described above, according to the connection key of the fifth aspect of the present invention, the drive key and the driven key can be inserted into the connection cylinder lock, and the unlocking and locking operations can be performed with a single handle operation. Thereby, the connection cylinder lock of this invention can be used more simply and comfortably. In addition, since it is not necessary to manage a plurality of keys separately, it is possible to prevent troubles such as lost or misplaced keys.

The connecting cylinder lock and the connecting key of the present invention may be applied to, for example, an entrance door or a gate door. In addition, it can be applied as a lock for shutters, safes, furniture, home appliances, vending machines, and the like.
The present invention (first to fifth inventions) may be applied alone, or may be applied in combination of these inventions as necessary. Moreover, you may combine the other invention described in this specification with this invention (1-5 invention).

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
The cylinder lock 10 of 1st Embodiment was shown in FIGS.
As shown in FIGS. 1 and 2, the cylinder lock 10 includes two cylinder units 12A and 12B. The units 12A and 12B are accommodated in the cylinder case 15 so as to be adjacent to each other vertically.

The cylinder units 12A and 12B have an outer cylinder 13 and an inner cylinder 14, respectively. A linkage gear 16 is fixed to the end of the inner cylinder 14 (see FIG. 3), and the linkage gear 16 and the inner cylinder 14 rotate integrally inside the outer cylinder 13.
A pin type locking mechanism is built in the cylinder units 12A and 12B. By these lock mechanisms, the state of whether or not the inner cylinder 14 rotates inside the outer cylinder 13, that is, the locked state and the unlocked state of the inner cylinder 14 are switched.

As shown in FIG. 2, the cylinder case 15 is provided with a storage space S1 for storing the cylinder units 12A and 12B. A vertical groove 15a and a horizontal groove 15b are formed in the storage space S1, and the vertical piece 13a and the horizontal piece 13b of the outer cylinder 13 are fitted in these grooves. Since the vertical piece 13 a and the horizontal piece 13 b are stopped by each groove, the outer cylinder 13 does not rotate in the cylinder case 15.
On the front side of the cylinder case 15, two key windows 15 d are vacated side by side (see FIG. 1). The keyhole of the inner cylinder 14 can be seen through these key windows 15d.
On the other hand, a lid 18 is attached to the back side of the cylinder case 15. The lid 18 is provided with an inner window 18d through which the linkage gear 16 projects outward (see FIG. 3).

  As shown in FIGS. 4 and 5, the locking mechanism of the cylinder units 12 </ b> A and 12 </ b> B houses a tumbler pin 21, a driver pin 22, and a compression spring 23 in a pin hole H connected to the outer cylinder 13 and the inner cylinder 14. It becomes.

  One end of the pin hole H extends to the vicinity of the tip of the vertical piece 13 a of the outer cylinder 13, and the other end is opened to the key hole of the inner cylinder 14. A tumbler pin 21 is inserted on the inner cylinder 14 side of the pin hole H, and a driver pin 22 and a compression spring 23 are inserted on the outer cylinder 13 side of the pin hole H. That is, the tumbler pin 21, the driver pin 22, and the compression spring 23 are arranged in this order from the side near the key hole of the inner cylinder 14. Since the compression spring 23 pushes the tumbler pin 21 to the key hole side through the driver pin 22 in the pin hole H, the pin tip of the tumbler pin 21 protrudes into the key hole.

  The lengths of the tumbler pin 21 and the driver pin 22 are adjusted according to the key groove of the key K. As shown in FIGS. 4 and 5, when the key K is inserted into the keyhole, the tumbler pin 21 is pushed toward the compression spring 23 along the keyway, and the boundary between the tumbler pin 21 and the driver pin 22 is The inner cylinder 14 is unlocked in alignment with the boundary with the inner cylinder 14. When the key K is extracted from the key hole, the tumbler pin 21 and the driver pin 22 are pushed toward the key hole by the compression spring 23, so that the boundary between these pins is shifted to the inner cylinder side. As a result, the tip of the driver pin 22 hits the boundary between the outer cylinder 13 and the inner cylinder 14, and the rotation of the inner cylinder 14 is locked.

  The link gears 16 and 16 are fixed on the same axis of the inner cylinders 14 and 14, respectively. Each linkage gear 16, 16 has the same size and the same number of teeth, and meshes vertically. Thereby, the rotational force of the inner cylinders 14 and 14 is transmitted to each other via the linkage gears 16 and 16.

A latch 17 is provided in the lower cylinder unit 12B of the cylinder units 12A and 12B. The latch 17 is fixed to the side surface of the linkage gear 16 and connected to a door clasp (not shown).
When the cooperation gear 16 rotates, the latch 17 is switched from the standby position to the locked position or the unlocked position. For example, when the linkage gear 16 is rotated 90 ° in the direction of arrow b from the standby position in FIG. 6A, the latch 17 is in the locked position (see FIG. 6B), and the door clasp is moved to the closed position. On the other hand, when the linkage gear 16 is rotated 90 ° from the standby position in FIG. 6A in the direction of arrow c, the latch 17 is in the unlocked position (see FIG. 6C), and the door clasp is moved to the open position. Let

Next, a method for using the cylinder lock 10 will be described.
In the cylinder lock 10, two dedicated keys K and K are used for the cylinder units 12A and 12B, respectively. Each key K, K has a keyway with the same pattern, and any key may be used for any cylinder unit 12A, 12B.
When locking or unlocking the cylinder lock 10, as shown in FIG. 4, two keys are inserted into the key holes of the cylinder units 12A and 12B. At this time, the tumbler pins 21 of the units 12A and 12B are pushed by the keyway, and the upper and lower inner cylinders 14 and 14 are both unlocked.

  In this state, when one of the upper and lower keys K is rotated in the locking or unlocking direction, this rotational force is transmitted to the inner cylinder 14 of the other unit via the linkage gears 16 and 16. Then, as shown in FIG. 6, the two inner cylinders 14 and 14 are simultaneously rotated in the opposite directions to switch the latch 17 to the locked position or the unlocked position.

  As described above, according to the cylinder lock 10 of the present embodiment, the cylinder units 12A and 12B are connected by the linkage gears 16 and 16, so that the position of the latch 17 is changed only when both the inner cylinders 14 and 14 rotate simultaneously. Can be switched. For this reason, it is necessary to keep the tension on the tumbler pins 21 of the two cylinder units 12A and 12B at the same time. Can not be unlocked.

  Further, even if a plurality of people try to pick the cylinder units 12A and 12B at the same time, if the key holes of the units 12A and 12B are located very close as in this embodiment, it is not possible to secure an operation space. Therefore, it becomes difficult to perform picking. Thus, in the cylinder lock 10 of this embodiment, picking action can be effectively prevented by a single person or a plurality of persons.

  Further, in the cylinder lock 10 of this embodiment, when only one of the two keys K, K is rotated during locking or unlocking, the other key is automatically rotated via the linkage gear 16. That is, the two keys K and K can be simultaneously turned by one operation, and the operation of locking or unlocking can be simplified. Taking advantage of the simultaneous use of two keys for unlocking and locking operations, for example, a reliable person such as a family member or friend owns the key and locks the door only when the necessary personnel are available. Alternatively, a special method of use such as unlocking is possible.

Furthermore, since the cylinder lock 10 of this embodiment has a configuration in which the two cylinder units 12A and 12B always cooperate with each other, only one of the cylinder units cannot be used alone. In this regard, compared to the case where two cylinder locks are separately attached and used, forgetting to lock can be surely prevented, and the crime prevention effect can be enhanced.
Further, since there is almost no play gap between the linkage gears 16 and 16, the responsiveness of the transmission of the rotational force is improved, and the key operation feeling is excellent. That is, it is possible to obtain an excellent operational effect that the other key and the cylinder are instantaneously linked by simply rotating one of the two keys with good responsiveness.

  Next, another embodiment will be described. In the cylinder lock according to another embodiment, substantially the same components as those of the first embodiment described above are denoted by the same reference numerals.

[Second Embodiment]
The connection cylinder lock of 2nd Embodiment was shown in FIG.7 and FIG.8. In the second embodiment, an intermediate gear is provided between two linked gears.
In the cylinder lock 30 of the second embodiment, cylinder units 32A and 32B are accommodated in a cylinder case 15. Each unit 32A, 32B includes an outer cylinder 13, an inner cylinder 14, and a linkage gear 33, and the outer cylinder 13 and the inner cylinder 14 incorporate a pin-type locking mechanism similar to that of the first embodiment.

  The gears 33 and 33 have a smaller gear diameter than the first embodiment, and the intermediate gear 34 is engaged between these gears. The linkage gears 33 and 33 and the intermediate gear 34 are arranged in a line in the vertical direction, and one rotational force of the linkage gears 33 and 33 is transmitted to the other linkage gear via the intermediate gear 34.

  A latch 35 is fixed behind the intermediate gear 34. As the intermediate gear 34 rotates, the latch 35 is switched from the standby position to the locked position or the unlocked position.

  The cylinder case 15 that houses the cylinder units 32A and 32B is slightly longer in the vertical direction than the first embodiment. As shown in FIG. 8, a bearing hole 15e for receiving the shaft 34a of the intermediate gear 34 is formed between the insertion ports of the cylinder units 32A and 32B.

The lid 36 of the cylinder case 15 has a storage space S2 for the linkage gears 33, 33 and the intermediate gear 34 inside thereof (see FIG. 7). When the cylinder units 32A and 32B are assembled in the cylinder case 15 and the lid 36 is closed, the linkage gears 33 and 33 and the intermediate gear 34 are covered with the lid 36 in the storage space S2.
A circular inner window 36 a is provided at the center of the lid 36. The shaft 34b of the intermediate gear 32 is fitted into the inner window 36a. The latch 35 of the intermediate gear 32 protrudes outside the lid 36 from the inner window 36a.

  When a key is inserted into each of the key holes of the cylinder units 32A and 32B and one of the keys is turned, one of the linkage gears 33 rotates the intermediate gear 32, and then this intermediate gear 32 rotates the other linkage gear 33. As a result, the linked gears 33 and 33 and the intermediate gear 32 are simultaneously rotated by the same rotation angle.

According to the configuration of the second embodiment, since the linkage gears 33 and 33 are rotated via the intermediate gear 32, the rotation directions of the linkage gears 33 and 33 are aligned in the same direction. For this reason, the directions in which the two keys are turned in the key holes of the cylinder units 32A and 32B are the same, and the keys can always be rotated in the same direction to perform locking and unlocking operations, thereby improving usability.
In the present embodiment, the latch 35 is provided in the intermediate gear 32. However, the position of the latch 35 may be provided not on the intermediate gear 32 but on the linkage gears 33 and 33 side.

[Third Embodiment]
The connection cylinder lock of 3rd Embodiment was shown in FIGS. In the third embodiment, two linked gears are connected by an annular belt.
In the cylinder lock 40, two cylinder units 42A and 42B are accommodated in the cylinder case 15. The outer cylinder 13 and the inner cylinder 14 of the cylinder units 42A and 42B incorporate a pin type lock mechanism similar to that of the first embodiment.

  Coordinate gears 44 and 44 are fixed to end portions of the inner cylinder 14 via stop plates 43 and 43. The linkage gears 44 and 44 are coaxial with the inner cylinder 14 and have the same size and the same number of teeth, respectively, and a predetermined interval is maintained between these upper and lower sides.

An annular belt 45 is wound around the outer periphery of the linkage gears 44, 44. The linkage gears 44 and 44 transmit the rotational force to each other via the annular belt 45.
Fixers 46 are attached to the side of the annular belt 45. These fixtures 46 prevent the annular belt 45 from falling off the linkage gears 44, 44.

A latch 47 is provided in the fixture 46 on the cylinder unit 42B side. As the cooperation gear 44 rotates, the latch 47 is switched from the standby position to the locked position or the unlocked position.
The lid 48 of the cylinder case 15 has a storage space S3 for the cooperation gears 44 and 44 and the annular belt 45 inside thereof. An inner window 48a is formed at a position slightly below the center of the lid 48, and a latch 47 projects outward from the inner window 48a.

  When a key is inserted into each of the key holes of the cylinder units 42 </ b> A and 42 </ b> B and one of the keys is turned, one linkage gear 44 drives the annular belt 45, and the other linkage gear 44 rotates via the annular belt 45. As a result, the linkage gears 44 and 44 rotate simultaneously at the same rotation angle.

  According to the third embodiment, the rotation direction of the linkage gears 44 and 44 is the same as in the second embodiment, so there is no need to distinguish the direction in which the key is rotated for each cylinder unit, and the usability of the cylinder lock 40 is improved. improves. Further, there is an advantage that the distance between the linked gears 44 and 44 can be freely set by adjusting the length of the annular belt 45.

[Fourth Embodiment]
The cylinder lock of the fourth embodiment is shown in FIGS. In the fourth embodiment, the lock mechanisms of two cylinder units are linked.
The cylinder lock 50 includes cylinder units 52A and 52B. The cylinder units 52 </ b> A and 52 </ b> B are each provided with an outer cylinder 53 and an inner cylinder 54, and a pin type lock mechanism is built in between the outer cylinder 53 and the inner cylinder 54. Cooperation gears 56 and 56 are fixed to the end of the inner cylinder 54. These linkage gears 56 and 56 mesh with each other to transmit one rotational force to the other.

  A vertical piece 53 a and a horizontal piece 53 b protrude from the side surface of the outer cylinder 53. Among these, the vertical piece 53a extends in the opposite direction to the above-described first to third embodiments, and is continuous so as to bridge the upper and lower units 52A and 52B.

The locking mechanism of the cylinder units 52A and 52B accommodates tumbler pins 61 and 61, driver pins 62 and 62, and a compression spring 63 in pin holes H that communicate the upper and lower cylinder walls of the outer cylinder 53 and the inner cylinder 54 vertically. Become. Tumbler pins 61, 61 are accommodated on the inner cylinders 54, 54 side of the pin hole H, and driver pins 62, 62 and a compression spring 63 are accommodated on the outer cylinders 53, 53 side of the pin hole H.
The compression spring 63 is sandwiched between the upper and lower driver pins 62 and 62 at the vertical piece 53 a portion of the pin hole H. That is, the driver pins 62 and 62 and the tumbler pins 61 and 61 are biased upward and downward at both ends of the compression spring 63, respectively.

  When the keys K and K are inserted into the key holes of the inner cylinder 54, the pin ends of the tumbler pins 61 and 61 are pushed by these key grooves, and the compression spring 63 is compressed toward the center. The boundary between the tumbler pins 61, 61 and the driver pins 62, 62 coincides with the boundary between the outer cylinder 53 and the inner cylinder 54, and the inner cylinders 54, 54 are unlocked. By rotating one of the keys K, K in this state, the latch 57 of the linkage gear 56 is switched to the locked position or the unlocked position.

According to the configuration of the fourth embodiment, since the lock mechanism of the cylinder units 52A and 52B shares the compression spring 63, the compression spring 63 is applied to the upper and lower tumbler pins 61 and 61 by simultaneously applying an appropriate load. The inner cylinders 54 and 54 cannot be unlocked unless they are compressed from both sides. For this reason, it becomes difficult to unlock the cylinder lock 50 by picking, and it is possible to obtain a cylinder lock with higher crime prevention than the first to third embodiments.
Further, since the vertical pieces 53a of the two cylinder units 52A and 52B are shared, the vertical dimension of one vertical piece is shorter than when the vertical pieces are separately formed, and the cylinder lock 50 can be made compact. It becomes easy to plan.

[Fifth Embodiment]
The structural example of the connection key for using for the connection cylinder lock of this invention was shown in FIGS. This connection key can be applied to the cylinder lock of the first to fourth embodiments. In FIGS. 14 to 17, each key is described with the keyway omitted for convenience of explanation.
As shown in FIG. 14, in the connection key 70, a driving key 72 and a driven key 73 are arranged in parallel on a key body 71. A handle 74 for rotating the drive key 72 is attached to the rear of the key body 71.

As shown in FIG. 15, the key body 71 houses a support shaft 75 of the drive key 72 and a support shaft 76 of the driven key 73. The base of each key is inserted into these mounting holes 75a and 76a.
A lid 77 fits on the opposite side of each key of the key body 71. A square pin 75 b of the support shaft 75 protrudes from the shaft hole 77 a of the lid 77.
The handle 74 is provided with a bearing 74a that can be fitted to the square pin 75b. By fixing the square pin 75b to the bearing 74a, the drive key 72 can be rotated by a handle operation. The driven key 73 is rotatably supported on the key body 71 by the support shaft 76 regardless of the operation of the handle 74.

  A ball spring 78 is attached between the support shafts 75 and 76 of the key body 71. The ball spring 78 is compressed on the peripheral surfaces of the support shafts 75 and 76, and fits so that the balls B and B at both ends of the spring are pressed into the recesses 76b and 76b on these peripheral surfaces (see FIG. 16). When the drive key 72 and the driven key 73 are rotated from the state shown in FIG. 14, the balls B and B are detached from the recesses 76 b and 76 b and are brought into sliding contact with the peripheral surfaces of the support shafts 75 and 76. When the drive key 72 and the driven key 73 return to their original positions, the balls B and B are again fitted into the recesses 76b and 76b. That is, the ball spring 78 plays a role of stably holding the drive key 72 and the driven key 73 at the standby position shown in FIG.

  For example, when the connecting key 70 is used in the cylinder lock 10 of the first embodiment, the drive key 72 is inserted into the key hole of the cylinder unit 12B, and at the same time, the driven key 73 is inserted into the key hole of the cylinder unit 12A. At this time, the tumbler pins 21 and 21 are pushed in the key grooves of the keys 72 and 73, and the inner cylinders 14 and 14 are unlocked. When the drive key 72 is rotated by operating the handle 74 in this state, the rotational force is transmitted to the inner cylinders 14 and 14 through the linkage gears 16 and 16, and the driven key 73 rotates in synchronization therewith.

As described above, according to the connecting key 70 of the fifth embodiment, the locking and unlocking operations can be performed very easily by simultaneously inserting the two keys into the two key holes and rotating the handle 74. Since the operation direction of the handle 74 is also uniform, it is not necessary to be aware of the direction of rotation every time the key is turned.
In addition, since the two keys (the driving key 72 and the driven key 73) are integrated with the key body 71, errors such as losing the keys or mixing them are reduced as compared with the case where they are managed separately.
In addition, about the structure of the connection key 70, as shown to the chain line of FIG. 14, you may provide the convex part 79 in the front center of the key body 71, for example. The protrusion 79 is fitted into the locking hole 39 (see FIG. 7) of the cylinder case 15 when the keys 72 and 73 are inserted into the cylinder lock 30 of the second embodiment. According to such a configuration, the key body 71 can be stabilized when the handle 74 is rotated by fitting the convex portion 79 in the locking hole 39, so that the two keys 72 and 73 can be rotated more easily. Become.

As mentioned above, although 1st Embodiment-5th Embodiment of this invention was described, the structure of embodiment is not restricted to these, You may accompany another deformation | transformation.
For example, in the first to fourth embodiments, the number of cylinder units may be increased to three or more. In the fifth embodiment, the number of driven keys may be increased according to the number of keyholes.
In the first to fourth embodiments, the lock mechanism is provided on the vertical piece of the outer cylinder, but the lock mechanism may be provided on the horizontal piece of the outer cylinder. The shape of the outer cylinder of the first to fourth embodiments is not limited to a type having a vertical piece and a horizontal piece, but may be a polygonal column type or a cylindrical type.
Furthermore, in the first to fourth embodiments, the two key windows are arranged one above the other. Further, in the first to fourth embodiments, within the scope of the present invention, separate members may be formed integrally, or conversely, the integrated member may be divided into separate members and combined. .

It is a front side exploded perspective view showing a cylinder lock by a 1st embodiment of the present invention. It is a back side exploded perspective view of the cylinder lock. It is a back side perspective view of the cylinder lock. It is a longitudinal cross-sectional view which shows the cylinder lock. FIG. 5 is a cross-sectional view taken along line VV in FIG. 4 showing the cylinder lock. FIG. 6A shows the cooperating gear of the cylinder lock, wherein FIG. 5A is an operation explanatory view showing a standby position of the latch, FIG. 5B is an operation explanatory view showing a locking position of the latch, and FIG. It is an operation explanatory view. It is a front side exploded perspective view showing a cylinder lock by a 2nd embodiment of the present invention. It is a back side exploded perspective view of the cylinder lock. It is a front side exploded perspective view showing a cylinder lock by a 3rd embodiment of the present invention. It is a back side exploded perspective view of the cylinder lock. It is a back side perspective view of the cylinder lock. It is a longitudinal cross-sectional view which shows the cylinder lock by 4th Embodiment of this invention. FIG. 13 is a cross-sectional view taken along line XIII-XIII in FIG. It is a perspective view which shows the connection key by 5th Embodiment of this invention. It is a disassembled perspective view of the connection key. It is sectional drawing of the connection key. It is a perspective view which shows the use condition of the connection key. It is a longitudinal cross-sectional view which shows the structural example of the conventional cylinder lock.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Cylinder lock 12A, 12B Cylinder unit 13 Outer cylinder 13a Vertical piece 13b Horizontal piece 14 Inner cylinder 15 Cylinder case 15a Vertical groove 15b Horizontal groove 16 Cooperation gear 17 Latch 18 Lid 21 Tumble pin 22 Driver pin 23 Compression spring 70 Connection key 71 Key body 72 Driving key 73 Followed key 74 Handle H Pin hole K Key

Claims (5)

A cylinder lock in which two or more cylinder units are linked,
The cylinder unit is
An outer cylinder fixed to the cylinder case;
An inner cylinder rotatably inserted into the outer cylinder;
A lock mechanism for locking the rotation of the inner cylinder;
A linkage gear fixed coaxially with the inner cylinder,
The connecting cylinder lock according to claim 1, wherein the linkage gears of the adjacent cylinder units are connected to each other so as to transmit the rotational force of the inner cylinder.   The linked cylinder lock according to claim 1, wherein each linkage gear of the adjacent cylinder units is linked by meshing an intermediate gear between the linkage gears.   The cylinder lock according to claim 1, wherein each linkage gear of adjacent cylinder units is connected by winding an annular belt around the linkage gear and meshing. The locking mechanism is
A tumbler pin that is inserted into the pin hole of the inner cylinder and protrudes from the pin hole to the key hole of the inner cylinder;
A driver pin inserted into the pin hole of the outer cylinder and arranged in the axial direction of the tumbler pin; and a compression spring for urging the driver pin toward the tumbler pin in the pin hole of the outer cylinder,
4. The compression spring according to claim 1, wherein the compression spring is provided at a bridging portion between the outer cylinders of the adjacent cylinder units, and urges the driver pins of the cylinder units coaxially at both ends of the springs. The connecting cylinder lock described in the item. A connection key used for the connection cylinder lock according to any one of claims 1 to 4,
Key body,
A handle attached to this key body,
A drive key that is provided on the key body and applies a rotational force to the inner cylinder of the connecting cylinder lock by operating the handle;
A coupling comprising a driven key provided on the key body at a predetermined distance from the driving key and rotating by receiving a rotational force from the inner cylinder when the inner cylinder of the coupling cylinder lock is rotated. key.

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