JP3034221B2 - Cylinder lock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
g) The present invention relates to a cylinder lock which is difficult to perform, etc., and in which the key organization can be freely changed by key operation and which can be used repeatedly.

[0002]

2. Description of the Related Art In general, a conventional cylinder lock, particularly a pin tumbler lock, includes a driver pin, a conversion pin, a tumbler pin, and the like, and is unlocked by inserting a key corresponding to the dimensions of the pin. Things.

[0003]

However, in the above-mentioned conventional cylinder lock, there is a risk that the cylinder lock may be illegally picked up. Further, in order to prevent such unauthorized opening, a lock with a combination of a tumbler and a side bar, for example, Japanese Patent Publication No. 47-6000 has been proposed. This lock makes the opening of the lock extremely difficult due to the combination of the tumbler and the side bar arranged vertically to the tumbler. However, with this type of lock, it was difficult to find and open it, but the key organization could not be easily changed.

SUMMARY OF THE INVENTION An object of the present invention is to provide a cylinder lock which is difficult to find and open, and in which the key organization can be easily changed.

[0005]

According to the present invention, there is provided a cylinder lock having an inner cylinder having a key groove, an outer cylinder rotatably supporting the inner cylinder, and a part protruding into the key groove. A tumbler disposed slidably in the axial direction, a spring for urging the tumbler in the keyway direction, a cylinder inserted through the tumbler, and a connecting member for coupling the tumbler and the cylinder. A second sidebar for restricting retraction of the connecting member, and a first sidebar for partially protruding or retreating from the inner cylinder toward the outer cylinder to prevent or permit rotation of the inner cylinder. It was done.

[0006] When the cylinder is raised through a tumbler by a key inserted into the key groove, a part of the first side bar partially enters a recess formed in the cylinder. , Whereby the inner cylinder is retracted in the direction of the inner cylinder to permit rotation of the inner cylinder.

[0007] The connecting member is a sphere or a connecting pin. Further, the connecting member releases the connection between the tumbler and the cylindrical body by a second side bar. The outer cylinder further includes a first recess for retracting the first side bar,
A second concave portion for retracting the second side bar.

A key which can be unlocked by rotating the inner cylinder to a second concave position where the second side bar retreats, removing a key, inserting another key and rotating the inner cylinder again to the original position. Can be changed. Also,
The tumbler is provided so as to be rotatable in a circumferential direction.

As described above, according to the cylinder lock of the present invention, it is difficult to find and open the cylinder lock, the key organization can be freely changed, and the cylinder lock can be used repeatedly.

[0010]

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a longitudinal cross-sectional view showing the internal structure of the cylinder lock of the present invention, FIG. 2 is a longitudinal vertical cross-sectional view showing the locked state of the cylinder lock, and FIG. 3 is the locked state of the cylinder lock. FIG. 5 is a longitudinal sectional view showing the internal structure of the cylinder lock. In this embodiment, the connecting member is formed of a spherical body 32.

The cylinder lock has an inner cylinder 11 having a keyway 10 and an outer cylinder 12 rotatably supporting the inner cylinder 11.
A tumbler 13 slidably disposed in the axial direction so that a part of the tumbler 1 protrudes into the key groove 10;
3, a sphere 32 which is a connecting member for connecting the tumbler 13 and the cylindrical body 14, a second side bar 16 for restricting retreat of the connecting member 32, and the inner cylinder 11. The first side bar 17 partially protrudes or retreats in the direction of the outer cylinder to prevent or permit rotation of the inner cylinder 11.
(See FIG. 1).

The inner cylinder 11 has a key groove 10 formed along the axial direction, and a plurality of tumbler holes 18 formed in communication with the key groove 10. The tumbler hole 18 is formed in a direction perpendicular to the axis of the inner cylinder 11. The tumbler 13 and the cylinder 14 inserted through the tumbler are inserted into the tumbler hole 18, and are pressed by a spring 19 from above. The top of the spring 19 is sealed with a spring stopper plate 20. The tumbler hole 18 is formed along the keyway 10 of the inner cylinder 11 in this embodiment.
(See FIG. 2).

[0013] As shown in FIGS.
The lower end 13a is formed in a substantially wedge shape, and has a flange 13b at the upper end. An engaging hole 21 for engaging the sphere 32 is formed on the outer periphery of the tumbler 13. In the example shown in FIG. 8, the engagement holes 21 are arranged in two stages by moving a predetermined angle to the left in the figure with respect to the center line C. Here, the center line C is located at a position passing through the center of the tumbler 13 in the wedge shape.

In the example shown in FIG. 9, the engagement hole 21 is located at the center position of the center line C, and shows a state in which the cylinder 14 is engaged with the engagement hole 21 at the lower position. FIG.
The reference numeral 1 moves in the right direction in FIG. This angle corresponds to the inclination angle of the key peak.

As shown in FIG. 11, the cylindrical body 14 has a connecting member hole 22 and a side bar hole 23 at both left and right ends. The inner diameter of the tube is large enough to be inserted into the tumbler 13. Therefore, as shown in FIG. 9, the positional relationship between the tumbler 13 and the cylinder 14 is determined by engaging the sphere 32 with one of the engagement holes 21 of the tumbler 13 and the connection member hole 22 of the cylinder 14. Is done.

A groove 24 in which the second side bar 16 is provided is formed in the inner cylinder 11. The groove 24 is formed at right angles to the keyway 10. When the second side bar 16 is arranged in the groove 24 as shown in FIG.
The rear end of the second side bar 16 is pressed by the inner periphery of the outer cylinder 12 and cannot be retracted, and the front end holds the sphere 32.
Therefore, the spherical body 32 is connected to the connecting member hole 22
And stays in the engagement hole 21 of the tumbler 13 to fix the relationship between the tumbler 13 and the cylindrical body 14 (see FIG. 5).

A groove 25 for the first side bar 17 is formed in the inner cylinder 11 at a right angle to the key groove 10 and at a position 180 degrees from the groove 24. At the time of locking, the first side bar 17 projects from the groove 25 into a locking groove 26 formed in the outer cylinder 12 to prevent rotation of the inner cylinder 11 (FIG. 5).
reference).

The outer cylinder 12 is formed with a key configuration changing groove 27, and the second side bar 16 disposed in the inner cylinder is
Is rotated to this position, and the engagement between the tumbler 13 and the cylindrical body 14 is released by the second side bar 16 retreating into the groove. If another key is inserted in a state where the tumbler 13 and the cylindrical body 14 are disengaged from each other and the key is returned to the original position, the knitting of the inserted key can be performed. Further, a spring pin 28 protrudes from the outer cylinder 12 in the direction of the inner cylinder to prevent the inner cylinder 11 from slipping out and prevent the inner cylinder 11 from rotating to the conversion position by the normal key (see FIGS. 1 and 5).

As shown in FIG. 1, the second side bar 16 is disposed in the groove 24, and has pin portions 16a at positions corresponding to the plurality of tumblers 13, respectively. The pin 16 a presses a sphere 32 disposed in the connection member hole 22 of the cylinder 14. Further, the second side bar 16 is urged in the outer peripheral direction by a spring 29. Therefore, when the inner cylinder 11 is rotated to the key conversion position, the second side bar 16 projects into the key configuration conversion groove 27 by the urging force of the spring 29.

The first side bar 17 also has a groove 25 in the inner cylinder 11.
And the plurality of pin portions 17a are respectively directed toward the cylinder 14, and when the tumbler 13 is raised to an appropriate position by the key, the tumbler 13 retreats into the sidebar hole 23 and retreats from the locking groove 26. Thus, the inner cylinder 11 can be rotated. The first side bar 17 is provided with the spring 3
0 urges in the outer peripheral direction (see FIG. 1).

Next, the operation of the thus configured cylinder lock will be described. First, when unlocking the locked cylinder lock, the key K is inserted into the key groove 10. Then, the tumbler 13 is pushed up according to each key peak, and if the key is a proper key, all the height positions of the side bar holes 23 of the cylindrical body 14 engaged with the tumbler 13 match (see FIG. 4). If all the height positions of the side bar holes 23 of the cylindrical body 14 coincide with the first side bar 17, the first side bar 17 retreats, and the inner cylinder 11 becomes rotatable and unlocked.

When locking, the first sidebar 1
7 is locked while maintaining a state of protruding into the locking groove 26 of the outer cylinder 12 (see FIG. 3).

Next, a case where the key organization is changed will be described. When the normal key K is inserted from the key insertion / removal position and rotated by about 90 degrees as shown in FIG. 12, the further rotation is prevented by the spring pin 28 as shown in FIG. However, as shown in FIG.
Since the conversion key K2 has the passage groove 31, it can be rotated over the spring pin 28 to the conversion position.

When the user rotates the conversion key K3 to the conversion position as shown in FIG.
Protruding into the key configuration conversion groove 27. When the ball 32 protrudes into the key configuration conversion groove 27, the sphere 32 is disengaged from the sidebar hole 23, and the engagement between the tumbler 13 and the cylinder 14 is released (see FIG. 16). In this state, when a new conversion key K4 is inserted and returned to the key removal / insertion position, the second side bar 16 moves forward along the inner circumference of the outer cylinder 12, pushes out the sphere 32, and pushes the tumbler 13 and the cylindrical body. 14 are connected to form a new normal key K5 (see FIG. 17). Here, the conversion key K4 and the normal key K5 have the same organization. In this way, the key organization can be changed freely and can be used repeatedly.

FIG. 18 is a longitudinal sectional view showing another embodiment of the cylinder lock of the present invention, FIG. 19 is a longitudinal sectional view showing the internal structure of the cylinder lock, and FIG. 20 is a locked state of the cylinder lock. FIG. 21 is a longitudinal sectional view showing the locked state of the cylinder lock, and FIG. 22 is a longitudinal sectional view showing the unlocked state of the cylinder lock. The connecting member is constituted by the connecting pin 15.

The cylinder lock has an inner cylinder 11 having a keyway 10 and an outer cylinder 12 rotatably supporting the inner cylinder 11.
A tumbler 13 slidably disposed in the axial direction so that a part of the tumbler 1 protrudes into the key groove 10;
3, a connecting pin 15 for connecting the tumbler 13 and the cylindrical body 14, a second side bar 16 for restricting retraction of the connecting pin 15, and a part from the inner cylinder 11. Are configured to include a first side bar 17 or the like that projects or retracts in the outer cylinder direction to prevent or permit rotation of the inner cylinder 11 (see FIG. 18).

The inner cylinder 11 has a key groove 10 formed along the axial direction, and has a plurality of tumbler holes 18 communicating with the key groove 10. The tumbler hole 18 is formed in a direction perpendicular to the axis of the inner cylinder 11. The tumbler 13 and the cylinder 14 inserted through the tumbler are inserted into the tumbler hole 18, and are pressed by a spring 19 from above. The top of the spring 19 is sealed with a spring stopper plate 20. The tumbler hole 18 is formed along the keyway 10 of the inner cylinder 11 in this embodiment.
(See FIG. 20).

The inner cylinder 11 has a groove 24 in which the second side bar 16 is provided. The groove 24 is formed at right angles to the keyway 10. When the second side bar 16 is disposed in the groove 24 as shown in FIG. 19, the rear end of the second side bar 16 is pressed by the inner periphery of the outer cylinder 12 and cannot be retracted, and the front end is connected to the connecting pin. I'm holding 15. Therefore, the connection pin 15 remains in the connection member hole 22 of the cylinder 14 and the engagement hole 21 of the tumbler 13, and fixes the relationship between the tumbler 13 and the cylinder 14.

A groove 25 for the first side bar 17 is formed in the inner cylinder 11 at a right angle to the key groove 10 and at a position 180 degrees from the groove 24. At the time of locking, the first side bar 17 protrudes from the groove 25 into a locking groove 26 formed in the outer cylinder 12 to prevent rotation of the inner cylinder 11 (FIG. 1).
9).

The outer cylinder 12 has a key configuration changing groove 27 formed therein.
Is rotated to this position, and the engagement between the tumbler 13 and the cylindrical body 14 is released by the second side bar 16 retreating into the groove. If another key is inserted in a state where the tumbler 13 and the cylindrical body 14 are disengaged from each other and the key is returned to the original position, the knitting of the inserted key can be performed. Further, a spring pin 28 protrudes from the outer cylinder 12 in the direction of the inner cylinder to prevent the inner cylinder 11 from slipping off and prevent the inner cylinder 11 from rotating to the conversion position by a normal key (see FIGS. 18 and 19).

The second side bar 16 is disposed in the groove 24 as shown in FIG.
Are formed at positions corresponding to. The pin 16b presses the connecting pin 15 arranged in the connecting member hole 22 of the cylindrical body 14. Further, the second side bar 16 is urged in the outer peripheral direction by a spring 29. Therefore, when the inner cylinder 11 is rotated to the key conversion position, the second sidebar 16
Project into the key configuration conversion groove 27 by the urging force of the spring 29.

The first side bar 17 also has a groove 25 in the inner cylinder 11.
And the plurality of pin portions 17a are respectively directed toward the cylinder 14, and when the tumbler 13 is raised to an appropriate position by the key, the tumbler 13 retreats into the sidebar hole 23 and retreats from the locking groove 26. Thus, the inner cylinder 11 can be rotated. The first side bar 17 is provided with the spring 3
It is urged in the outer peripheral direction by 0 (see FIG. 18).

Next, the operation of the cylinder lock configured as described above will be described. First, when unlocking the locked cylinder lock, the key K is inserted into the key groove 10. Then, the tumbler 13 is pushed up according to each key peak, and if the key is a proper key, all the height positions of the sidebar holes 23 of the cylindrical body 14 engaged with the tumbler 13 match (see FIG. 22). If all the height positions of the side bar holes 23 of the cylindrical body 14 coincide with the first side bar 17, the first
Is retracted, and the inner cylinder 11 becomes rotatable and unlocked.

When locking, the first side bar 1
7 is locked while maintaining a state of protruding into the locking groove 26 of the outer cylinder 12 (see FIG. 23).

Next, a case where the key organization is changed will be described. As shown in FIG. 26, the conversion key K3 has the passage groove 31, so that the conversion key K3 can get over the spring pin 28 and rotate to the conversion position.

When the second side bar 16 is rotated to the conversion position by the conversion key K2 as shown in FIG.
Protruding into the key configuration conversion groove 27. When projected into the key configuration conversion groove 27, the pin portion 16 of the second sidebar 16 is
The connection pin 15 is retracted by the magnetic force b, and the engagement between the tumbler 13 and the cylinder 14 is released. In this state, when a new key is inserted and returned to the key removal / insertion position, the second side bar 16 moves forward along the inner circumference of the outer cylinder 12 to push out the connecting pin 15, and the tumbler 13 and the cylindrical body 14 are pushed out. Are linked to form a new key organization. In this way, the key organization can be changed freely and can be used repeatedly.

In this way, the key organization can be changed freely, can be used repeatedly, and it is difficult to pick from outside. It should be noted that the present invention is not limited to the above embodiments, and various design changes can be made based on the technical idea of the present invention.

[0038]

As described above in detail, according to the cylinder lock of the present invention, the inner cylinder having the key groove, the outer cylinder rotatably supporting the inner cylinder, and the inside of the key groove are provided. A tumbler disposed so as to be slidable in the axial direction so that a part thereof protrudes, a spring for urging the tumbler in the keyway direction, a cylinder inserted through the tumbler, the tumbler and the cylinder , A second side bar for restricting the retraction of the coupling member, and a first part for protruding or retreating from the inner cylinder toward the outer cylinder to prevent or permit rotation of the inner cylinder. And the side bar, it is possible to freely change the key organization and to make illegal picking difficult.

Further, the composition can be freely changed by a key operation using the tumbler, the cylinder, and the connecting member, and the composition can be used repeatedly. Further, the unlocking operation requires that the angle in the circumferential direction coincides with the height of the tumbler in the vertical direction, and it is extremely difficult to open the tumbler.

[Brief description of the drawings]

FIG. 1 is a longitudinal cross-sectional view showing the internal structure of a cylinder lock according to the present invention.

FIG. 2 is a longitudinal sectional view in a longitudinal direction showing a locked state of the cylinder lock.

FIG. 3 is a longitudinal sectional view showing a locked state of the cylinder lock.

FIG. 4 is a longitudinal sectional view showing the unlocked state of the cylinder lock in the longitudinal direction.

FIG. 5 is a longitudinal sectional view showing an internal structure of the cylinder lock when a key is inserted.

FIG. 6 is a longitudinal sectional view showing a state where a key is inserted into the cylinder lock and rotated by 90 degrees.

FIG. 7 is a longitudinal sectional view showing a state in which a conversion key K2 is inserted into the cylinder lock.

FIG. 8 is a front view showing an example of a tumbler used for the cylinder lock.

FIG. 9 is a front view showing a relationship between a tumbler and a cylinder used in the cylinder lock.

FIG. 10 is a front view showing another example of the tumbler used for the cylinder lock.

FIG. 11 is an enlarged longitudinal sectional view of a cylinder used for the cylinder lock.

FIG. 12 is a principle view showing an insertion / removal position when a normal key K is inserted into the cylinder lock.

FIG. 13 shows a state in which a normal key K is inserted into the cylinder lock, and 90
It is a principle figure showing the state where it rotated by degrees.

FIG. 14 is a principle view showing a state where a conversion key K2 is inserted into the cylinder lock and rotated to a conversion position.

FIG. 15 is a principle view showing a state in which the conversion key K3 is inserted into the cylinder lock and rotated to the conversion position.

FIG. 16 is a principle view showing a state where a key K4 of a new composition is inserted into the cylinder lock.

FIG. 17 is a principle view showing a state where the key organization is changed in the cylinder lock.

FIG. 18 is a longitudinal cross-sectional view showing another embodiment of the cylinder lock of the present invention.

FIG. 19 is a longitudinal sectional view showing an internal structure of the cylinder lock when a key is inserted.

FIG. 20 is a longitudinal sectional view showing the locked state of the cylinder lock in the longitudinal direction.

FIG. 21 is a longitudinal sectional view showing a locked state of the cylinder lock.

FIG. 22 is a longitudinal sectional view in the longitudinal direction showing an unlocked state of the cylinder lock.

FIG. 23 is a longitudinal sectional view showing the cylinder lock when a key is inserted.

FIG. 24 is a longitudinal sectional view showing a state where the key is inserted into the cylinder lock and rotated by 90 degrees.

FIG. 25 is an explanatory view showing a state where the conversion key K2 is inserted into the cylinder lock and rotated to the conversion position.

FIG. 26 is a longitudinal sectional view showing a state where the conversion key K3 is inserted into the cylinder lock.

[Explanation of symbols]

 C Center line K key 10 Key groove 11 Inner cylinder 12 Outer cylinder 13 Tumbler 13a Lower end 13b Flange 14 Cylindrical body 15 Connecting pin 16 Second side bar 16a Pin portion (not magnetized) 16b Pin portion (magnetized) 17) 1st sidebar 17a Pin portion 18 Tumbler hole 19 Spring 20 Spring stopper 21 Engagement hole 22 Connecting member hole 23 Sidebar hole 24 Groove 25 Groove 26 Locking groove 27 Key configuration conversion groove 28 Spring pin 29 spring 30 spring 31 passage groove 32 sphere

Claims (7)

(57) [Claims] 1. An inner cylinder having a key groove, an outer cylinder rotatably supporting the inner cylinder, and an axially slidably disposed so as to partially project into the key groove. A tumbler, a spring for urging the tumbler in the key groove direction, a cylinder inserted into the tumbler, a connecting member for connecting the tumbler and the cylinder, and a second member for restricting retraction of the connecting member. And a first side bar that partially protrudes or retreats from the inner cylinder toward the outer cylinder to prevent or permit rotation of the inner cylinder. 2. The first side bar partially enters a concave portion formed in the cylindrical body when the cylindrical body is raised via a tumbler by a key inserted into a key groove. 2. The cylinder lock according to claim 1, wherein the cylinder lock retracts in the direction of the inner cylinder to permit rotation of the inner cylinder. 3. The cylinder lock according to claim 1, wherein the connecting member is a sphere. 4. The cylinder lock according to claim 1, wherein the connection member releases the connection between the tumbler and the cylindrical body by a second side bar. 5. The outer cylinder according to claim 1, further comprising a first concave portion for retracting the first side bar and a second concave portion for retracting the second side bar. Cylinder lock. 6. When the inner cylinder is rotated to a second concave position where the second side bar is retracted, a key is removed, another key is inserted, and the inner cylinder is rotated again to the original position, and then unlocking is performed. 2. The cylinder lock according to claim 1, wherein the keys that can be changed can be changed. 7. The cylinder lock according to claim 1, wherein the tumbler is disposed rotatably in a circumferential direction.