KR20000029432A - A cylinder locker and a key for locking and unlocking the locker used in the cylinder locker - Google Patents

Abstract

PURPOSE: A cylinder lock and a key are provided to make it impossible to release the lock indecently and to make difficult to reproduce the key for opening and closing the lock. CONSTITUTION: When a key(3) for releasing/locking a lock is inserted into a key insertion groove(8), the rotation of a plug(2) is permitted by positioning the other end at a rotation boundary(7) of the plug and a plug case(1) after contacting front ends of each tumbler pin(5) at a recessed part(19) for forming a key code for opening toward a protrusion direction into the key insertion groove of the tumbler pin. The key for releasing/locking the cylinder lock includes the recessed part for forming the key code inclined in a specific angle for a wide face(4). Also, a guide groove for fitting a protrusion(10) is formed at a narrow face(9) to be difficult to reproduce the key.

Description

A cylinder locker and a key for locking and unlocking the locker used in the cylinder locker}

The present invention relates to a cylinder lock and a key for filling and opening a lock for use in the cylinder lock.

Generally, forming a recess for forming a code in a direction inclined at a predetermined angle with respect to the side of the key to fill and open the lock is an effective means for making it difficult to duplicate the key to fill and open the lock using a copying machine or the like. As a cylinder lock using a filling and opening key, one disclosed in Japanese Patent Application Laid-Open No. 62-14951 is known. In this conventional example, two rows of tumbler rows are arranged in the plug case, in which the rotation is inserted freely, toward and away from the corner of the insertion groove.

However, in the above-described conventional example, since the tip of the tumbler pin is protruded into the key insertion groove separately in the key tip insertion state, it is relatively easy to use the wire or shield-shaped tool to open the lock improperly. Has

The present invention has been made to solve the above-mentioned shortcomings, and an object of the present invention is to provide a cylinder lock and a key for filling and opening a lock, which are difficult to duplicate a key for filling and opening a lock, and improperly opening a lock.

1 is a view showing the present invention, (a) is a perspective view of a cylinder lock showing the arrangement of the tumbler pin, (b) is a perspective view of a key to fill and open the lock.

2 is a cross-sectional view of the cylinder lock.

3 is a cross-sectional view taken along the line 3A-3A of FIG. 2.

FIG. 4 is a cross-sectional view corresponding to FIG. 3 illustrating a state in which a lock and an opening key are immediately inserted.

5 is a cross-sectional view taken along line 5A-5A of FIG. 2.

FIG. 6 is an explanatory view showing a state where the ball receiving hole and the ball access hole are arranged in a straight line, (a) is a view showing the open state of the lock, and (b) is a view showing the state rotated 180 degrees. .

<Description of the code | symbol about the principal part of drawing>

1: plug case 2: plug

2a: center of rotation 3: lock and open key

4: wide side 5: tumbler pin

5a: axis center line 6: tumbler group

7: rotation boundary 8: key insertion groove

9: narrow surface 10: protrusion

11: tumbler pair 12: drive pin

13: floating ball 14: driven pin

15: blade portion 16: ball receiving hole

17: ball access hole θ: cross angle

According to the present invention, the above object is

Rotation in the plug case 1 is made by inserting the plug 2 freely,

The plug 2 is advanced and retracted at different angles with respect to the wide surface 4 of the key 3 which fills and opens the lock inserted in the plug 2, and the center line 5a of the plug 2 A tumbler pin belonging to the other group in the direction of the center of rotation 2a of the two groups of the tumbler group 6 in which the pair of tumblers 5 intersecting on the center of rotation 2a are arranged in the long direction. The tumbler pins 5 are arranged by applying a force from the plug case 1 side toward the center of the plug 2 so that 5) are alternately arranged,

When the lock 3 is inserted into the plug 2 and the key 3 is immediately inserted, the end of the tumbler pin 5 is positioned on the rotation boundary surface 7 of the plug case 1 and the plug 2 so that the plug 2 is closed. In cylinder lock, allowing rotation

One tumbler row in the tumbler group 6 in one direction is disposed at a position for dividing the crossing angle θ of the tumbler pair 11 in the tumbler group 6 in the other direction,

In addition, the key insertion groove 8 is provided with a V-shaped protrusion 10 that also serves as a guide rail of the key 3 to fill and open the lock by protruding toward the side of the face 9 where the width of the key 3 to lock and open the lock is narrow. By providing a cylinder lock.

In the plug 2, the tumbler pair 11 which belongs to the other tumbler group 6 in the longitudinal direction of the plug 2 is alternately arrange | positioned. The tumbler pins 5 of each tumbler pair 11 are arranged so that the axial center line 5a intersects on the rotational center axis 2a of the plug 2, and the key 3 that locks and opens is not inserted. In FIG. 3, the tip is connected to the center of the plug 2 by a force applied toward the center of the plug 2 applied to the plug pin 5 through the guide pin 18 mounted on the plug case 1, for example. It protrudes on or near the rotation center axis 2a of 2) and protrudes in the key insertion groove 8. In the projected state of the tumbler pin 5, the end of the tumbler pin 5 on the plug case 1 side does not coincide with the rotation boundary surface 7 of the plug 2 and the plug base 1, so that the plug 2 Rotation is prohibited.

As shown in FIG. 4, when the lock 3 is inserted into the key insertion groove 8 immediately, the key code for opening the tumbler pin 5 toward the protrusion direction into the key insertion groove 8 is opened. The tip of each tumbler pin 5 is in contact with the forming recess 19, and the other end is positioned at the rotational boundary surface 7 of the plug 2 and the plug case 1 to allow rotation of the plug 2. The key 3 for filling and opening the lock used in such a cylinder lock has a keycode forming recess 19 inclined at a predetermined angle with respect to the wide face 4, and the narrow face 9 is provided. Since the projection 10 has a guide groove for fitting, it becomes difficult to duplicate the key 3 that is filled with the lock using the copying machine.

In addition, the V-shaped protrusion 10 narrows the insertion space of a wire or shield-shaped tool or the like, and the immediately preceding tumbler pair 11 protruding from another direction provides an access path to the rear tumbler pair 11. In order to close, the tool and the like can be inserted into the key insertion groove 8 to operate the respective tumbler pins 5 so that the cylinder lock cannot be opened improperly.

The invention according to claim 2,

Rotation in the plug case 1 is made by inserting the plug 2 freely,

The plug 2 is advanced and retracted at different angles with respect to the wide surface 4 of the key 3 which fills and opens the lock inserted in the plug 2, and the center line 5a of the plug 2 A pair of tumbler pins 5 intersecting on the center of rotation axis 2a is applied to each tumbler pin 5 in the longitudinal direction of the plug 2 by applying a pressure from the plug case 1 side toward the center of the plug 2. and,

When the lock 3 is inserted into the plug 2 and the key 3 is immediately inserted, the end of the tumbler pin 5 is positioned on the rotation boundary surface 7 of the plug case 1 and the plug 2 so that the plug 2 is closed. In cylinder lock, allowing rotation

The at least one tumbler pair 11 is held by a key 3 to lock and open the lock, and a driving pin for pushing the floating ball 13 freely movable in the thickness direction of the key 3 to lock and open the lock ( 12 and a cylinder lock composed of driven pins 14 moving in the moving direction of the floating ball 13 in accordance with the movement of the floating ball 13.

The plug 2 is equipped with a tumbler pin 5 to which a force is applied in the plug 2 center direction. The tumbler pins 5 are arranged in the long direction of the plug 2 in two pairs in which the axial center line 5a intersects on the rotation center axis 2a of the plug 2 to form the tumbler group 6.

When the lock 3 is inserted into the key insertion groove 8 immediately, the key code forming recess 19 is opened in the protruding direction in the key insertion groove 8 of the tumbler pin 5 as described above. Since the tip of each tumbler pin 5 comes into contact with the tumbler pin 5, the tumbler pin 5 is pushed out to the plug case 1 side, and the other end thereof is connected to the rotary boundary surface 7 of the plug 2 and the plug case 1. Position and rotation of the plug 2 is allowed.

In the present invention, any pair of tumblers 11 in the tumbler group corresponds to the floating ball 13 held in the key 3 to lock and open the lock, so that the tumbler pair 11 is moved toward the center of the plug 2 and the floating ball ( The drive pin 12 which pushes out 13, and the driven pin 14 pushed out to the plug case 1 side according to the movement of the floating ball 13 are comprised. The end of the plug case 1 side of the drive pin 12 and the driven pin 14 coincides with the rotation boundary surface 7 of the plug case 1 and the plug 2, and it is determined whether the rotation of the plug 2 is permitted. Whether or not is determined according to the position of the floating ball 13 in the state where the lock is opened, and in the single body 3 of the key 3 to lock and open the lock, the floating ball 13 is free to move, The position of the floating ball 13 when the lock is opened cannot be reproduced by a copying machine or the like and cannot be reproduced.

The invention according to claim 4,

A plug (2) having a plurality of tumbler pins (5) in the plug case (1) is a cylinder lock in which rotation is freely inserted.

The blade portion 15 inserted into the key insertion groove 8 of the plug 2 has a ball receiving hole 16 having a bottom opened in an orthogonal direction with respect to the wide surface 4 of the blade portion 15. and,

At the same time, a ball access hole 17 is formed in which a hole is drilled in an inclined direction with respect to the wide surface 4 on the opposite side to the open surface of the ball receiving hole 16 to communicate with the ball receiving hole 16.

In the ball receiving hole 16, a spherical floating ball 13 is a key 3 that fills and opens the lock used freely.

According to the present invention, since the floating ball 13 is mounted, not only copying of the key is difficult, but also the following advantages are provided because the ball access hole 17 and the ball receiving hole 16 are not arranged in a straight line. . FIG. 6 is an explanatory view showing a case where the ball access hole 17 and the ball receiving hole 16 are arranged in a straight line, and the plug case 1 corresponds to the drive pin 12 and the conventional pin 14. Drive pin 18 is mounted. As shown in Fig. 6 (a), the ball receiving hole 16 replaces the conventional pin 14 in the state in which the lock 3 is opened and inserted into the key insertion groove 8 of the plug 2. At the same time, the ball access hole 17 is opposed to the drive pin 12, and the compression spring for pressing the drive pin 18 on the drive pin 12 side is stronger than the driven pin 14 side. The drive pin 12, which is forced by the pin 18 in the direction of the plug 2 rotational center, enters the ball access hole 17 and pushes the floating ball 13 to the opposite side. Drive pins corresponding to the driven pins 14 in order to push the floating ball 13 by moving the driven pins 14 entering the ball receiving hole 16 against the applied force of the driven side drive pins 18. It is necessary to make the applied force of (18) weaker than the applied force of the drive pin 18 corresponding to the drive pin 12, and then rotate the plug 2 180 degrees, as shown in Fig. 6 (b). As described, the ball access hole 17 corresponds to the driven pin 14 and the ball receiving hole 16 corresponds to the drive pin 12. In this state, the floating ball 13 is pressed by the driven pin 14 and cannot stop at a normal position. The ends of the drive pin 12 and the driven pin 14 are connected to the plug 2 and the plug case ( The plug 2 cannot be rotated due to a shift in the rotation boundary surface 7 of 1).

On the other hand, in the present invention, even when the plug 2 is rotated at an angle of 180 degrees or other angles, the drive pin 12 and the driven pin 14 are not replaced by the drive pin 18 except at the initial rotation position. Force inversion does not occur and the imbalance does not occur.

Example

The cylinder lock is formed by rotatably inserting the plug 2 into the plug case 1 as shown in FIGS. The plug 2 has a circumferential shape, and a key insertion groove 8 extending in the rotational center direction of the plug 2 is formed at the center thereof. The key insertion groove 8 has a substantially spherical cross section corresponding to the general section cross-sectional shape of the blade portion 15 of the key 3 which fills and opens the lock described below, and has a narrow surface of the key 3 that fills and opens the lock. V-shaped protrusions 10 are provided on the corresponding surfaces 8a and 8a '. In addition, as shown in FIG. 3, the key insertion groove 8 is formed at a position in which the center 8b is eccentric by an offset amount δ at the center of rotation of the plug 2.

The plug 2 is equipped with a plurality of tumbler pins 5. Each tumbler pin 5 is an end attachment pin of a circular cross section having a large diameter portion 5a and a small diameter portion 5c, and a truncated cone-shaped sensing portion 5d is provided at the tip of the small diameter portion 5c. Have These tumbler pins 5 are accommodated freely in a posture in which the sensing portion 5d faces the key insertion groove 8 in the tumbler insertion hole 20 in which the plug 2 is drilled, and the shaft center line 5a. ) Is arranged to pass through the center of rotation of the plug (2). Further, the tumbler insertion through hole 20 is an end attachment hole corresponding to the large diameter portion 5b and the small diameter portion 5c of the tumbler pin 5, and the tumbler pin 5 is the large diameter portion 5b and the small diameter portion. The amount of protrusion into the key insertion groove 8 is regulated by bringing the end formed at the boundary of 5c into contact with the tumbler insertion barrel and the end on the hole 20 side.

The tumbler pin 5 is arranged in the plug 2 by the restriction described below. First, two tumbler pins 5, 5 are arranged on any inner surface orthogonal to the center of rotation of the plug 2. As these two tumbler pins 5 have the shaft center line 5a through the rotation center axis 2a of the plug 2 and belong to the same plane as mentioned above, the shaft center line 5a is a plug ( 2) and the pair 11 of these two tumbler pins 5 to the rotation center axis 2a direction of the plug 2, i.e., the plug 2, on the rotation center axis 2a. The tumbler group 6 is formed by arrange | positioning at the pitch p in the long direction of. In this embodiment, the tumbler pair 11 is constituted by a pair of tumbler pins 5 whose intersection angle θ of the axial center line 5a is 135 °, and one tumbler pin 5 is a key insertion groove. (8) the orthogonal retreat in one direction of the corresponding surface (8c) of the wide surface of the key to fill and open the lock, the tumbler pin (5) in the other direction is different width of the key (3) to lock and open the lock 45 ° from the side of the corresponding surface 8a of the narrow side of the key 3, which is inclined toward the center of the plug 2 of the key insertion groove 8, to lock and open the lock. Retreat to the angle of inclination.

In the present invention, the cylinder lock is configured by arranging a plurality of the tumbler groups 6 on the plug 2. In this embodiment, the two groups of tumbler groups 6 having the same crossing angle θ in the tumbler pair 11 and the same pitch p between the tumbler pairs 11 are key insertion grooves. It is arrange | positioned in line symmetry with respect to the width center line of (8), and the tumbler pin 5 of the tumbler group 6 of one direction is arrange | positioned in the position which divides the crossing angle (theta) of the tumbler group 6 of the other direction. . Moreover, as shown in FIG. 2, these two groups of tumbler groups 6 arrange | position a half pitch shift in the longitudinal direction of the plug 2, and the tumbler group 6 which differs for every half pitch in the longitudinal direction of the plug 2 is shown. The tumbler pairs 11 belonging to are arranged. In order to show the relationship between the tumbler groups 6, in Fig. 2, the plane cut by the axial center lines 5a and 5b of the tumbler pair 11 belonging to the tumbler group 6 in one direction is denoted by 6A. The cut surface by the axial center line 5a, 5b of the tumbler pair 11 which belongs to the tumbler group 6 is shown with the code | symbol 6B, and the tumbler pin which belongs to the tumbler group 6 of one direction below FIG. The surface formed by the axial center line 5a of the tumbler pin 5 which belongs to the tumbler group 6 of the other direction is code | symbol 6B as the surface formed by the axial center line 5a of (5), and code | symbol 6B. ').

On the other hand, the plug case 1 is provided with a drive pin insertion hole and a hole 1a which communicates with each tumbler insertion hole and the hole 20 of the plug 2. The drive pin insertion hole 1a and the tumbler insertion hole and the hole 20 are disposed in a straight line in a state where they are opposed to each other, and the drive pin 18 is inserted into the drive pin insertion hole 1a. The drive pin 18 is a cylinder having a diameter dimension substantially the same as that of the large diameter portion 5b of the tumbler 5, and a force is applied to the center of the plug 2 by the compression spring 21.

Under the above configuration, in a state in which the key 3, which will be described later, is opened and the key 3 is not inserted into the insertion groove 8, the tumbler pin 5 in the plug 2 is pressed by the plug pin 18 so as to press the key insertion groove ( 8) Protrudes inside. As shown in FIG. 3, the dimension of the end part is suitably determined so that the front-end | tip of the sensing part 5d may contact each other on the rotation center axis 2a of the plug 2 in a protruding state. The tip of the tumbler pin 18 enters the plug 2 beyond the rotational boundary 7 of the plug 2 and the plug case 1 by protruding into the key insertion groove 8 of the tumbler pin 5. The rotary boundary surface 7 is closed by the drive pin 18 so that the plug 2 cannot be rotated. In this state, each tumbler pin 5 is operated using a shield-shaped or wire-shaped tool, so that the front tumbler pin 5 approaches the rear tumbler pin 5 even when the cylinder lock is opened in an unjust manner. Since it is in a state of closing, the operation of opening the lock becomes very difficult. Moreover, since the V-shaped protrusion part 10 is provided in the corresponding surface 8a of the narrow surface of the key 3 which locks and opens the lock which centered on the plug 2, insertion of a tool in the said area | region is In the opposite side, i.e., the corresponding surface 8a 'of the narrow surface tilted around the plug 2, the intersection angle θ between the tumbler pairs 11 of the tumbler group 6 in one direction is determined. Since the tumbler pin 5 at the position to be divided cannot be accessed, the jig cannot be used to open the lock improperly.

The key 3 which fills and opens the lock used for the said cylinder lock is shown to FIG. 1 (b). The key 3 that fills and opens the lock has a blade portion 15 having a handle portion 3a at its tip. The blade portion 15 is a flat key having a spherical cross-sectional shape, and the narrow surface 9 is formed with a V-shaped guide groove 15a into which the protrusion 10 of the plug 2 can be fitted. do. 1 and 4, a plurality of key code forming recesses 19 are provided in the blade portion 15 by dimple processing, and each key code forming recess 19 is a plug 2. Has an axis center coincided with the axis center line 5a of each tumbler pin 5 so as to correspond to the sensing section 5d end surface of the tumbler pin 5 when inserted into the key insertion groove 8 of the tumbler pin 5. The formation of the guide groove 15a in the narrow surface 9 of the blade is difficult in the ordinary precision copying machine, and is provided in the inclined direction with respect to the wide surface 4 of the blade portion 15. Since it is generally difficult to accurately reproduce the keycode forming recesses 19 in the copying machine, the copying operation of the key 3 that is filled with the lock becomes difficult.

When the blade portion 15 of the key 3 which fills and opens the lock configured as described above is inserted into the key insertion groove 8 of the plug 2, the tumbler pin 5 is formed in each key code forming recess 19. When fitted, the tumbler pin 5 moves from the initial position to the plug case 1 side to a position corresponding to the depth of the key code forming recess 19. When the depth of the key code forming recess 19 matches the type of the corresponding tumbler pin 5, that is, when the key 3 that locks and opens the lock is inserted immediately, as shown in FIG. 4, the tumbler pin The tip of the large diameter part 5b of (5) is located in the rotation boundary surface 7 of the plug 2 and the plug case 1, and rotation of the plug 2 is permitted. On the other hand, when the depth of the key code forming recess 19 is too deep, the drive pin 18 closes the rotary boundary surface 7, and the tumbler pin 5 when the key code forming recess 19 is too shallow. ) Closes the rotary boundary surface 7 to prohibit the rotation of the plug 2.

In this embodiment, the keycode forming recess 19 is equal to the point symmetrical position with respect to the intersection of the width direction center line and the thickness direction center line of the blade section 15 so that the blade section 15 can be used even when the blade section 15 is inverted. Two pieces are formed in a shape.

As shown in FIG. 5, the blade portion 15 is provided with a ball receiving hole 16 and a ball access hole 17 corresponding to any one of the tumbler pairs 11, and the ball receiving hole 16 is provided. The spherical floating ball 13 is accommodated freely in the movement. The ball receiving hole 16 is a circular hole opened toward a direction orthogonal to the wide surface 4 of the blade portion 15, has a bottom wall 16a made of a cone, and fills the opening end. Falling of the balling ball 13 is prevented. The floating ball 13 can be used even when the blade portion 15 is inverted from side to side. Like the key code forming recess 19 described above, the floating ball 13 has an intersection point between the width direction center line and the thickness direction center line of the blade portion 15. Two are placed in the point symmetric position.

On the other hand, the drive pin 12 is arrange | positioned in the plug 2 opposite the ball receiving hole 16 and the ball access hole 17, respectively. These driven pins 14 and the driving pins 12 are end pins having large diameter portions 14a and 12a and small diameter portions 14b and 12b, like the tumbler pin 5 described above, and the plug case 1 side. A force is applied to the center of the plug 2 via the drive pin 18 of the plug. Moreover, the spring force of the compression spring 21 for applying the drive pin 18 to the plug 2 center direction is pushed up to the driven pin 14 side of the floating ball 13 by the drive pin 12. The force is set so as to be larger than the pressing force of the floating ball 13 by the driven pin 14, the drive pin 12 is in the ball access hole 17, and the driven pin 14 is the ball receiving hole 16. ), The floating ball 13 is always kept in a position lifted from the bottom wall 16a of the ball receiving hole 16 in the state of opposing each other. Management of the raised amount of the floating ball 13 in this state can be performed at either the key 3 and the driving pin 12 side that lock and unlock, and at the key 3 side that lock and open the lock. Management of the floating amount of the floating ball 3 is provided with the reference | standard part which regulates the amount which floated by the floating ball 13 in the opening end of the ball accommodation hole 16, The floating ball 13 is a drive pin 12 When the force is pushed up from), it is always made to float until it comes in contact with the reference part. In addition, management on the drive pin 12 side is performed by managing the protrusion amount of the drive pin 12 by the end part of the tumbler insertion hole 20.

Therefore, in the present embodiment, in the state where the lock 3 is opened and the key 3 is not inserted, the drive pin 12 and the driven pin 14 are forced by the drive pin 18 toward the center of the plug 2. The drive pin 18 is prevented from rotating by the plug 2 in order to close the plug 2 and the rotary boundary surface 7 of the plug case 1. As shown in Fig. 5, when the lock 3 is opened and the key 3 is inserted, the drive pin 12 enters the ball receiving hole 16 from the ball access hole 17 to move the floating ball 13 in a predetermined amount. Push it up. In this state, the ends of the plug case 1 side of the driven pin 14 and the driving pin 12 coincide with the outer circumferential surface of the plug 2, so that the rotary boundary surface 7 of the plug 2 and the plug case 1 is oriented. Open to allow rotation of the plug (2).

The lock 3 with the floating ball 13 moving in the ball receiving hole 16, as described above, is very difficult to replicate by the copying machine, as shown in this embodiment. When the floating ball 13 is set to protrude from the general surface of the blade portion 15 (the wide surface 4 in the present embodiment) in the unlocked state as described above, the floating ball 13 is imitated by the copying machine. Since the key 3 that fills and opens the lock that has been copied by the lock is not inserted into the key insertion groove 8, the copy by the copy processing machine becomes impossible.

As can be seen from the above description, according to the present invention, it is possible to disable the duplication of the key to fill and open the lock and the operation of unlocking the lock incorrectly.

Claims (4)

Rotation is freely inserted in the plug case, The plug is retracted at a different angle with respect to the wider surface of the key that fills and opens the lock inserted in the plug, and the shaft center line is a tumbler in which the pair of tumbler pins intersects on the center of rotation of the plug in the long direction of the plug. The two groups of the group are arranged by applying a force from the plug case side to the center of the plug on each tumbler pin so that the tumbler pins belonging to the other group are alternately arranged in the long direction of the plug. In a cylinder lock that allows the plug to rotate by placing the end of the plug pin on the plug case and the rotational boundary of the plug when the plug is unlocked and the key is inserted immediately, One tumbler column in the tumbler group in one direction is disposed at a position for dividing the crossing angles of the tumbler pairs in the tumbler group in the other direction, The key lock groove is a cylinder lock, characterized in that a V-shaped protrusion which protrudes toward the side of the narrow side of the key to fill and open the lock and serves as a guide rail for the key to fill and open the lock. Rotation is freely inserted in the plug case, The plug is retracted at a different angle with respect to the wider surface of the key that fills and opens the lock inserted in the plug, and the shaft center line has a pair of tumbler pins intersecting on the rotation center axis of the plug on each tumbler pin. In the long direction of the plug, In a cylinder lock that allows the plug to rotate by placing the end of the tumbler pin on the plug case and the rotational boundary of the plug when the plug is unlocked and the key is inserted immediately. The at least one tumbler pair is held by a key to lock and open the lock, the driving pin for pushing the floating ball freely move in the thickness direction of the key to fill and open the lock, the movement of the floating ball in accordance with the movement of the floating ball A cylinder lock comprising a driven pin moving in a direction. The cylinder lock according to claim 1, wherein at least one row of tumblers in the tumbler group in any one direction comprises the driving pin and the driven pin according to claim 2. In the lock key which fills and opens the cylinder lock which rotationally inserted the plug provided with the some tumbler pin in the plug case, The blade portion inserted into the key insertion groove of the plug has a bottomed ball receiving hole installed in a direction orthogonal to the wide surface of the blade portion; A ball access hole is provided in communication with the ball receiving hole by being drilled in an oblique direction with respect to the wide surface on the opposite side to the open surface of the ball receiving hole. A key for filling and opening the lock, characterized in that the ball-shaped floating ball is freely allowed to move in the ball receiving hole.