JP2007239265A - Cylinder lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cylinder lock which requires only a small number of components, and which can enhance assembling workability. <P>SOLUTION: In this cylinder lock, a rotor 7, in which a key insertion hole 6 is axially formed, is rotatably housed in an outer case 8. The rotor 7 can be rotated when a duplicate key 1 is inserted into the key insertion hole 6 of the rotor 7 so that a boundary between tumbler pins 12a and 12b and driver pins 15 and 15 can correspond to a boundary between the outer case 8 and the rotor 7. The outer case 8 is capable of being fitted with a unit 17 in which a plurality of driver pins 15 and a leaf spring member 16 are integrally built in a holder 14. The leaf spring member 16 comprises a plurality of spring piece parts 30 for pushing each of the driver pins 15 in the direction of the rotor 7. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cylinder lock in which a rotor having a key insertion hole formed in an axial direction is rotatably housed in an outer casing.

  Conventionally, a general cylinder lock attached to a door of a house or the like includes a rotor having a key insertion hole into which a plate-like key is inserted, and an outer casing that rotatably accommodates the rotor. The rotor is formed with a plurality of pin holes arranged in rows in the axial direction so as to communicate with the key insertion hole, and the outer casing is formed with a plurality of pin holes corresponding to the pin holes of the rotor. ing. A tumbler pin is accommodated in the pin hole of the rotor, a driver pin is accommodated in the pin hole of the outer casing, and a plurality of driver pins are pressed in the rotor direction in the pin hole of the outer casing. A coil spring is provided.

When the key is inserted into the key insertion hole of the rotor, the tumbler pin is moved by engaging the tumbler pin with a plurality of valleys formed on the side in the width direction of the key, and the tumbler pin and the driver pin Rotation of the rotor is allowed when the boundary of is coincident with the boundary between the outer casing and the rotor (see, for example, Patent Document 1).
Japanese Patent No. 3620460

  According to the cylinder lock having the above configuration, if the number of key troughs is increased, different types of combined keys can be formed. However, an increase in the number of parts and an increase in cost are inevitable. In other words, when a large number of valleys are formed in the key, not only a large number of tumbler pins and driver pins corresponding to the number of valleys are required, but also the number of coil springs for pressing individual driver pins. The cost increases as the number increases. In addition, a large number of parts must be assembled to the outer casing, and much work time is required for the assembly work.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a cylinder lock that can reduce the number of components and can greatly improve the assembly workability.

  The present invention includes an outer housing having a rotor housing hole extending in the axial direction, and a key insertion hole that is housed in the rotor housing hole of the outer housing so as to be rotatable about an axis and extends in the axial direction and into which a key is inserted. And a rotor having a plurality of pin holes communicating with the key insertion holes and forming a row in the axial direction, a plurality of tumbler pins respectively housed in the pin holes of the rotor, and the rotor attached to the outer casing. A holder having a plurality of pin holes capable of entering the corresponding tumbler pins and capable of entering the corresponding tumbler pins, and a plurality of drivers respectively housed in the pin holes of the holder and capable of entering the corresponding pin holes of the rotor And a leaf spring member having a plurality of spring pieces attached to the holder and pressing each of the plurality of driver pins of the holder in the direction of the rotor, and the key is inserted into the key insertion hole of the rotor. The plurality of driver pins and leaf spring members are inserted into the holder when the boundary between the tumbler pin and the driver pin coincides with the boundary between the outer casing and the rotor. It is characterized by being integrated into the unit and configured as a unit.

  According to the present invention, since the plurality of driver pins and the leaf spring members are integrated into the holder and configured as a unit, it is possible to assemble only this unit in a separate process, and assembling workability Can be improved. Moreover, since the said leaf | plate spring member can urge | bias a several driver pin with the several spring piece part formed in this, it can reduce a number of parts.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a perspective view from the front of the cylinder lock in a state in which the key is inserted, and FIG. 2 shows a perspective view in which the components of the cylinder lock are disassembled, partially omitted. 3 is a transverse plan view of the cylinder lock shown in FIG. 1, FIG. 4 is a longitudinal side view thereof, and FIG. 5 is a longitudinal front view thereof. Moreover, in this embodiment, a cylinder lock shall be applied to the door of a house.

  The key 1 of the cylinder lock according to the present embodiment includes a thin plate-like insertion portion 2a and a head portion 2b at the end thereof, and is formed in a plurality of rows formed on both side portions 2c and 2c in the width direction of the insertion portion 2a. There are two rows of troughs 3. For example, four rows of trough portions 3 are provided at each of the target positions (see FIG. 3) of both side portions 2c and 2c with the longitudinal center line of the key 1 as the axis of symmetry.

  A plurality of, for example, four, recesses 4 (see FIG. 4) are formed in the longitudinal direction on both surface portions 2d and 2d in the thickness direction of the insertion portion 2a, and the insertion portion 2a. The guide grooves 5 and 5 are formed in the both surface portions 2d and 2d so as to extend in the longitudinal direction. These two rows of recesses 4 and guide grooves 5 and 5 are provided in plane-symmetrical positions on the two-sided portions 2d and 2d. That is, the key 1 is so-called reversible.

The cylinder lock of the present embodiment includes a rotor 7 in which a key insertion hole 6 into which the key 1 is inserted is formed in the axial direction, and an outer casing 8 in which a rotor accommodation hole 8a for accommodating the rotor 7 is formed. ing.
The rotor 7 is configured by integrally including a rotor body 9 having a substantially columnar shape and a flange portion 10 formed at a front end portion (right end portion in FIG. 2) of the rotor body 9. On the rear surface side of the flange portion 10, a groove portion 10a is formed over a substantially half circumference. The key insertion hole 6 is formed in the center of the rotor 7 in a substantially rectangular shape that is horizontally long when viewed from the front. The key insertion hole 6 is integrally provided with a pair of guide protrusions 6 a and 6 a (see FIG. 5) that engage with the guide grooves 5 and 5 of the key 1.

  As shown in the cross-sectional plan view of FIG. 3, the rotor body 9 is formed with pin holes 11a and 11a penetrating in the radial direction so as to face both the left and right sides (up and down in the drawing). The pin holes 11 a and 11 a are provided in plural, for example, four in a row in the axial direction of the rotor body 9, and communicate with the key insertion hole 6.

  Tumbler pins 12a and 12a are accommodated in the pin holes 11a and 11a so as to be movable in the radial direction of the rotor body 9, respectively. These tumbler pins 12a and 12a come into contact with the valley portions 3 and 3 of the key 1 inserted into the key insertion hole 6, respectively. In this case, the length dimensions of the tumbler pins 12 a and 12 a are set so that the front ends thereof are in contact with the valley portions 3 and 3, and the rear ends are along the outer periphery of the rotor body 9.

  Further, as shown in the longitudinal side view of FIG. 4, the rotor body 9 is formed with pin holes 11b and 11b penetrating in the radial direction so as to face both the upper and lower sides. In other words, the rotor body 9 is provided with a plurality of, for example, four pin holes 11b and 11b at an angle of 90 degrees with respect to the pin holes 11a and 11a.

  Tumbler pins 12b and 12b are accommodated in pin holes 11b and 11b formed facing the upper and lower sides, respectively, and these tumbler pins 12b and 12b are recessed parts 4 and 4 of the key 1 inserted in the key insertion hole 6, respectively. And come in contact with each other. The length dimensions of the tumbler pins 12b, 12b accommodated in the pin holes 11b, 11b are set so that the front ends thereof are in contact with the recesses 4, 4, and the rear ends are along the outer periphery of the rotor body 9. .

  The rotor 7 is rotatably provided in the outer casing 8 when the rotor main body 9 is accommodated in the rotor accommodating hole 8 a of the outer casing 8. The rotor housing hole 8 a is formed in the central portion of the outer casing 8 so as to extend in the axial direction, and its inner peripheral surface is in sliding contact with the outer peripheral surface of the rotor body 9. On the front end face of the outer casing 8 (see FIGS. 1 and 2), a convex portion 13 is integrally provided at the outer peripheral portion of the rotor housing hole 8a. The rotation range of the rotor 7 is restricted to 180 degrees by the engagement between the convex portion 13 and the groove portion 10a formed on the flange portion 10 over a substantially half circumference.

A lock portion (not shown) is attached to the rear end portion of the rotor body 9, and the door is locked and unlocked through the lock portion as the rotor body 9 rotates. It has come to be.
The outer casing 8 is provided with four holders 14 so as to surround the rotor 7. A driver pin 15 corresponding to the tumbler pin 12 a or 12 b and a leaf spring member 16 are integrally incorporated in the holder 14 and configured as a unit 17. The unit 17 is attached to the outer casing 8. It has become. Hereinafter, the mounting structure will be described in detail.

First, each side portion of the outer casing 8 is formed with an accommodating portion 18 whose side surface and front end surface are open. A communication groove 19 is formed in the inner wall 18a of the accommodating portion 18 so as to be positioned in a portion adjacent to the rotor accommodating hole 8a and extending in the axial direction.
Engaging grooves 20 are provided in both side walls 18b, 18b of the accommodating portion 18, respectively, and a locking portion 21 is integrally formed at the front end of each side wall 18b, 18b. Further, the rear wall 18c of the accommodating portion 18 is integrally provided with an engaging portion 22 that is located at the center and protrudes forward, and an inclined surface 22a that is inclined outward is formed on the outer side thereof. Is formed.

  The holder 14 is made of a synthetic resin material, and integrally includes a holder main body 24 connected by a plate-like portion 23 and side portions 25 and 25. As shown in FIG. 5, a substantially triangular engaging portion 26 is integrally provided on the end surface of the side portion 25 having a substantially “L” shape when viewed from the front. The engagement groove 20 of the portion 18 is engaged. In addition, a rectangular engagement hole 23 a that engages with the engagement portion 22 of the accommodating portion 18 is formed in a substantially central portion of the plate-like portion 23 (see FIG. 2). The engaging groove 20, the engaging portions 22, 26, and the engaging hole 23a constitute the engaging means of the present invention.

  The holder body 24 is provided with four pin holes 27 arranged so as to face the communication groove 19. These pin holes 27 correspond to the tumbler pins 12a or 12b, respectively, so that the corresponding tumbler pins 12a or 12b can enter. The driver pins 15 are accommodated in the pin holes 27 of the holder body 24 so as to be movable in the radial direction of the rotor body 9.

  FIG. 6 is an enlarged view of the driver pin 15 accommodated in the pin hole 27 and its vicinity. As shown in this figure, a conical portion 15a is integrally formed at the base end portion of the driver pin 15, and a large-diameter portion 15b is integrally formed over the entire circumference. On the other hand, the inner periphery of the pin hole 27 is set to an inner diameter dimension that is in sliding contact with the outer periphery of the large-diameter portion 15 b of the driver pin 15. Further, a hook-shaped protrusion 27a is integrally formed on the end of the pin hole 27 on the rotor 7 side, and the inner periphery of the protrusion 27a is formed on the driver pin 15 (the conical portion 15a and the diameter). The inner diameter dimension is set so as to be in sliding contact with the outer periphery of the outermost part 15b). Thereby, the movement of the driver pin 15 in the pin hole 27 is regulated at a position where the protruding portion 27a and the large diameter portion 15b of the driver pin 15 come into contact with each other.

  As shown in FIGS. 2 and 7, side portions 25, 25 of the holder 14 are respectively provided with step portions 28 located at the front end portions. The step portion 28 is configured to abut against the locking portion 21 of the housing portion 18 and to lock the holder 14 so as not to move forward.

  Further, spring grooves 29 are formed between the side portions 25 and 25 and the holder main body 24 (see FIG. 5). The leaf spring member 16 is attached to the holder 14 by inserting the leaf spring member 16 into the spring grooves 29 and 29 from the front. The leaf spring member 16 is formed in a substantially “U” shape in a front view and has four spring piece portions 30. These spring pieces 30 press each of the conical portions 15a of the driver pin 15 in the direction of the rotor 7 at the tip portions thereof. As a result, the inner end portion of the driver pin 15 can enter the corresponding pin hole 11 a or 11 b of the rotor 7 through the communication groove 19.

  As shown in FIG. 2, the bent portions 31, 31 constituting both end portions of the leaf spring member 16 are respectively provided with stepped portions 32 positioned at the front end portions. The step 32 of the leaf spring member 16 incorporated in the holder 14 is formed so as to be flush with the step 28 of the holder (see FIG. 7). In contact therewith, the leaf spring member 16 is configured to be locked so as not to move forward.

Next, the procedure for assembling the cylinder lock will be described with reference to FIGS.
As shown in FIG. 2, the four driver pins 15 are first accommodated in the pin holes 27 of the holder 14. Next, the bent portions 31 and 31 of the leaf spring member 16 are inserted into the spring grooves 29 and 29 of the holder 14 from the front. At the time of this insertion, the distal end portion of the spring piece portion 30 and the proximal end portion of the driver pin 15 come into contact with each other, but since the proximal end portion is a conical portion 15a, the spring piece portion 30 is caught by the driver pin 15. The leaf spring member 16 is easily inserted. Further, even if the driver pin 15 accommodated in the pin hole 27 is pressed by the spring piece portion 30, the large-diameter portion 15b of the driver pin 15 and the protruding portion 27a are engaged with each other so that it does not come out of the holder 14. It is. In this way, the four driver pins 15, the leaf spring member 16, and the holder 14 are assembled in advance as the unit 17.

  Then, as shown in FIG. 7, the unit 17 is assembled from the side with respect to the accommodating portion 18 of the outer casing 8. This assembly is performed by pressing the unit 17 in the direction of arrow A. Specifically, the holder 14 is pressed so that the plate-like portion 23 slides in contact with the inclined surface 22 a of the engagement portion 22, and the engagement hole 23 a and the engagement portion 22 of the plate-like portion 23 are engaged. In addition, the unit 17 is fixed to the housing portion 18 of the outer casing 8 by engaging the engaging portion 26 of the side portion 25 so as to slide into the engaging groove 20 of the side wall 18b of the housing portion 18. .

  In this manner, after the four units are assembled so as to surround the rotor accommodation hole 8a, the rotor body 9 in which the tumbler pins 12a and 12b are accommodated is inserted from the front side into the rotor accommodation hole 8a. At this time, the rotor 7 is provided in the outer casing 8 in a state in which the groove portion 10a of the flange portion 10 and the convex portion 13 formed in the outer casing 8 are positioned so as to engage with each other. The assembly of the rotor 7 to the outer casing 8 may be performed before the unit 17 is assembled to the outer casing 8.

Next, the operation of the cylinder lock configured as described above will be described.
First, the insertion portion 2 a for the key 1 is inserted into the key insertion hole 6. This insertion is possible even if the key 1 is a reversible type and is inverted 180 degrees.
By this insertion, the two rows of troughs 3, 3 formed in the insertion portion 2a (see FIG. 3) engage with the tumbler pins 12a, 12a facing each other on both the left and right sides, and the two rows of recesses 4, 4 (See FIG. 4) The tumbler pins 12b and 12b facing each other on both the upper and lower sides thereof are engaged. As a result, the boundary between the tumbler pins 12 a and 12 b and the driver pins 15 and 15 is in a state of being coincident with the boundary that is a contact surface between the outer casing 8 and the rotor body 9.

  In this state, the rotor 7 can be rotated, and the rotation of the key 1 rotates the rotor 7 together with the key 1. With this turning operation, the door is locked and unlocked through a lock portion (not shown) provided at the rear end of the rotor body 9. The rotation operation of the key 1 is restricted to 180 degrees that is the rotation range of the rotor 7.

As described above, the cylinder lock according to the present embodiment forms two rows of valleys 3 with four rows in the width direction on the key 1 and two rows with four rows in the thickness direction. Since the concave portions 4 are formed and the tumbler pins 12a and 12b correspond to the many valley portions 3 and the concave portions 4, respectively, the number of key differences can be increased.
In this case, the tumbler pins 12a and 12b are arranged in four rows with pin holes 11a and 11b of the rotor body 9 at an angle of 90 degrees. For this reason, since it is very difficult to move all the tumbler pins 12a and 12b of the arrangement with a picking tool or the like, unlocking by picking can be suppressed as much as possible.

  The four driver pins 15 corresponding to the tumbler pins 12 a and 12 b are configured to be pressed by a single leaf spring member 16. Therefore, unlike the present embodiment, the number of parts can be reduced compared to a conventional cylinder lock in which a plurality of driver pins are pressed by the same number of coil springs.

  Since the leaf spring member 16 and the four driver pins 15 are integrally assembled in the holder 14 and configured in the unit 17, it is possible to assemble only the unit 17 in a separate process and improve the assembling workability. Can be made. Further, since the protruding portion 27 a is formed in the pin hole 27 of the holder 14 and the large diameter portion 15 b is formed in the driver pin 15, the movement of the driver pin 15 in the pin hole 27 can be restricted. Therefore, since it is not necessary to assemble the driver pin 15 once assembled so as not to come out of the holder 14, workability can be further improved.

  The unit 17 is assembled to the outer casing 8 by pressing the unit 17 from the side against the accommodating portion 18 of the outer casing 8 to engage the engaging hole 23a of the holder 14 with the engaging portion 22 of the accommodating portion 18. In addition, the engaging portion 26 of the holder 14 and the engaging groove 20 of the accommodating portion 18 can be engaged with each other. Therefore, since separate fixing means for the outer casing 8 of the unit 17 is not required, the number of parts can be reduced and the number of man-hours can be reduced. Further, since the inclined surface 22a is formed in the engaging portion 22, and the shape of the engaging portion 26 is formed in a triangular shape, the unit 17 can be easily press-fitted into the outer casing 8.

In addition, this invention is not limited only to above-described embodiment, It can deform | transform or expand as follows.
The cylinder lock of the present invention is not limited to a door of a house, but can be applied to a storeroom, a safe, a car, and the like.

  The combined key 1 is not limited to a reversible type. In other words, the key 1 does not have to have the troughs 3 and 3 provided at symmetrical positions on the two side portions 2c and 2c, and the concave portions 4 and 4 and the guide grooves 5 and 5 on the double-sided portions 2d and 2d, respectively. It does not have to be provided at a symmetrical position. In this way, the valleys 3 and 3, the recesses 4 and 4, and the guide grooves 5 and 5 may be formed asymmetrically so that more key differences may be configured. Moreover, you may make it form the guide groove 5 only in the one surface part 2d among the double-sided parts 2d and 2d.

  The cylinder lock of the above embodiment is provided with four rows of tumbler pins 12a, 12a and 12b, 12b, but the number per row is not limited to four. In addition, these columns may be provided one row at both sides 2c and 2c in the width direction of the key 1 or one row at both sides 2d and 2d in the thickness direction. That is, the rotor body 9 is provided with a plurality of pin holes 11a, 11a or 11b, 11b in a row at an angle of 180 degrees with respect to each other to accommodate the tumbler pins 12a, 12a or 12b, 12b, respectively. The two sets of units 17 and 17 are attached to the outer casing 8 corresponding to these tumbler pins 12a and 12a or 12b and 12b. Then, the key 1 is inserted into the key insertion hole 6 of the rotor 7, and two rows of troughs 3 and 3 formed on both sides 2c and 2c in the width direction of the key 1 or both sides 2d in the thickness direction. , 2d may be configured so that the rotor 7 can be rotated when the two rows of recesses 4, 4 are engaged with the tumbler pins 12a, 12a or 12b, 12b. According to this configuration, the number of tumbler pins 12a or 12b and the number of units 17 can be reduced as compared with the above embodiment, and the configuration can be simplified.

  In addition, the tumbler pins 12a and 12b may be provided in one row in the width direction and the thickness direction of the key 1. That is, the rotor body 9 is provided with a plurality of two rows of pin holes 11a and 11b at an angle of 90 degrees with respect to each other to accommodate the tumbler pins 12a and 12b, respectively. , 12b, two sets of units 17 are attached. Then, the key 1 is inserted into the key insertion hole 6 of the rotor 7, and one row of valleys 3 formed in the width direction of the key 1 is engaged with the tumbler pin 12 a of one row, and the key 1 Any configuration is possible as long as the rotor 7 can rotate when one row of the recesses 4 formed in the thickness direction engages with the tumbler pins 12b in the other row. Since it is difficult to move all of the two rows of tumbler pins 12a and 12b arranged at an angle of 90 degrees with a picking tool or the like, unlocking by picking can be suppressed. Further, according to this configuration, the number of tumbler pins 12a and 12b and the number of units 17 can be reduced as compared with the above embodiment, and the configuration can be simplified.

  Furthermore, the row of the tumbler pins 12a and 12b may be provided in either the width direction or the thickness direction of the key 1. That is, the rotor body 9 is provided with a plurality of pin holes 11a or 11b arranged in a row, and each of the tumbler pins 12a or 12b is accommodated, and the outer casing 8 has a set corresponding to the tumbler pins 12a or 12b. Install the unit 17. Then, the key 1 is inserted into the key insertion hole 6 of the rotor 7, and one row of valleys 3 formed in the width direction of the key 1 or one row of recesses 4 formed in the thickness direction of the key 1. However, when the tumbler pin 12a or 12b is engaged and the boundary between the tumbler pin 12a or 12b and the driver pin 15 coincides with the boundary between the outer casing 8 and the rotor body 9, the rotor 7 can be rotated. I just need it. According to this configuration, the number of tumbler pins 12a or 12b and the number of units 17 can be further reduced as compared with the above embodiment, and the configuration can be simplified.

  Further, the engaging means may have a configuration in which an engaging portion is formed in one of the unit 17 and the outer casing 8 and an engaging hole that engages with the engaging portion is formed in the other.

The external appearance perspective view from the front of the cylinder lock of the state which shows one Embodiment of this invention and inserted the key External perspective view showing a state in which the components of the cylinder lock are disassembled, partially omitted Cross section of cylinder lock Longitudinal side view of cylinder lock Front view of cylinder lock Partial enlarged view of FIG. External perspective view of the unit shown together with the outer casing

Explanation of symbols

  In the drawings, 1 is a key, 2c is a side, 2d is a surface, 3 is a trough, 4 is a recess, 6 is a key insertion hole, 7 is a rotor, 8 is an outer casing, 11a and 11b are pin holes, and 12a and 12b. Is a tumbler pin, 14 is a holder, 15 is a driver pin, 16 is a leaf spring member, units 17 and 20 are engagement grooves (engagement means), 22 is an engagement portion (engagement means), and 23a is an engagement hole (engagement). , 26 is an engaging portion (engaging means), 27 is a pin hole, and 30 is a spring piece portion.

Claims (5)

An outer housing having a rotor housing hole extending in the axial direction;
The outer casing has a rotor insertion hole that is rotatably accommodated around the axis, has a key insertion hole that extends in the axial direction and into which a key is inserted, and a plurality of rows that communicate with the key insertion hole and form an axial line A rotor having a pin hole of
A plurality of tumbler pins respectively stored in the pin holes of the rotor;
A holder attached to the outer casing and having a plurality of pin holes each corresponding to a tumbler pin of the rotor and capable of entering the corresponding tumbler pin;
A plurality of driver pins that are respectively housed in the pin holes of the holder and can enter the corresponding pin holes of the rotor;
A leaf spring member attached to the holder and having a plurality of spring pieces for pressing each of the plurality of driver pins of the holder in the rotor direction;
When a key is inserted into the key insertion hole of the rotor, and the boundary between the tumbler pin and the driver pin coincides with the boundary between the outer casing and the rotor, the rotor can be rotated.
The cylinder lock according to claim 1, wherein the plurality of driver pins and the leaf spring members are integrally incorporated in the holder to constitute a unit. The rotor is provided with another row of pin holes at an angle of 180 degrees with the plurality of pin holes, each storing a tumbler pin,
In the outer casing, another unit similar to the unit is attached corresponding to the new pin hole and tumbler pin,
A plate-like key is inserted into the key insertion hole of the rotor, and two rows of troughs formed on both sides in the width direction of the key or two rows of recesses formed on both sides in the thickness direction 2. The cylinder lock according to claim 1, wherein the rotor lock is configured to be able to rotate when engaged with a tumbler pin and a boundary between the tumbler pin and the driver pin coincides with a boundary between the outer casing and the rotor. . The rotor is provided with a plurality of pin holes in another row at an angle of 90 degrees with the plurality of pin holes, each storing a tumbler pin,
In the outer casing, another unit similar to the unit is attached corresponding to the new pin hole and tumbler pin,
A plate-like key is inserted into the key insertion hole of the rotor, and one row of troughs formed in the width direction of the key engages with one row of tumbler pins, and in the thickness direction of the key. When the formed row of recesses engages with the other row of tumbler pins and the boundary between the tumbler pin and the driver pin coincides with the boundary between the outer casing and the rotor, the rotor can be rotated. The cylinder lock according to claim 1. In addition to the plurality of pin holes, each of the rotor is provided with a plurality of three rows of pin holes at an angle of 90 degrees, and a tumbler pin is accommodated in each row,
A unit similar to the unit corresponding to the pin holes and tumbler pins of each new row is attached to the outer casing,
A plate-like key is inserted into the key insertion hole of the rotor, and two rows of troughs formed on both sides in the width direction of the key engage with two rows of tumbler pins at positions different by 180 degrees, and The two rows of recesses formed on both sides in the thickness direction of the key are engaged with the remaining two rows of tumbler pins at positions 180 degrees different from each other, and the boundary between the tumbler pin and the driver pin is the boundary between the outer casing and the rotor. 2. The cylinder lock according to claim 1, wherein the cylinder lock is configured to be able to rotate the rotor when they coincide with each other.   The cylinder lock according to any one of claims 1 to 4, wherein the unit is attached to an outer casing by an engaging means.

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