JP5001641B2 - Pin tumbler lock and pin tumbler lock device - Google Patents

Description

  This invention is a pin tumbler lock that selectively stops the inner cylinder at each of a plurality of rotational positions by moving the tumbler pin in the inner cylinder in the radial direction according to the shape of the key inserted into the inner cylinder, The present invention also relates to a pin tumbler locking device such as a selector switch with a key that changes the open / closed state of an electrical contact according to the rotational position of the inner cylinder of the pin tumbler lock.

  As a selector switch disposed on a control panel or the like, there is a selector switch with a key provided with a tumbler lock so that only a specific operator can operate. A selector switch with a key includes a rotor (inner cylinder) having a keyhole into which a key is inserted from the front, a rotor case (outer cylinder) in which the rotor is rotatably stored, a rotating cam that rotates integrally with the rotor, and a rotating cam An operating member that is displaced in the axial direction of the rotor by rotation, and an electrical contact that the operating member abuts on the movable contact are provided.

  The rotor into which the key is inserted can be selectively stopped at each of a plurality of rotational positions in the rotor case. The operating member changes the open / closed state of the electrical contacts arranged on the back side of the rotor according to the rotational position of the rotor.

  In the selector switch with a key, a key must be inserted into the key hole of the rotor in order to change the open / close state of the electrical contact. If the key can be pulled out of the keyhole of the rotor at any of the plurality of rotational positions of the rotor, there may occur a case where the open / closed state of the electrical contact cannot be changed immediately. For example, if the key is pulled out from the keyhole while the controlled device with the keyed selector switch connected to the power line is operating, the key must be inserted into the keyhole even when the controlled device is stopped. In an emergency, the controlled device cannot be stopped suddenly.

  Therefore, some conventional selector switches with a key have a retaining structure. The retaining structure prohibits the key from being pulled out from the key hole when the rotor is stopped at a specific retaining position (see, for example, Patent Document 1).

  In the case of using a plate tumbler lock like the selector switch with a key described in Patent Document 1, the movement of the plate tumbler in the rotor is restricted when the rotor is in a specific retaining position.

  That is, in the plate tumbler lock, each of the plurality of plate tumblers is provided in the rotor so as to be movable in the radial direction, and a radial groove facing the plate tumbler is formed in the rotor case at each of a plurality of rotational positions of the rotor. Has been. At the position where the plate tumbler faces the groove, the plate tumbler corresponding to the shape of the key can move in the radial direction and enter the groove, and the key can be inserted into and removed from the key hole of the rotor.

  A retaining member is inserted into the groove facing the plate tumbler when the rotor is in the retaining position. When the rotor is in the retaining position, the plate tumbler cannot enter the groove, so that the insertion and removal of the key with respect to the key hole of the rotor is restricted.

The selector switch with key is used in various situations. For this reason, it is necessary to prepare a plurality of types of selector switches with a lock, which have different rotational positions depending on the usage conditions, etc., even if they have the same shape. In a selector switch with a key using a plate tumbler lock, the retaining position can be changed by changing the groove into which the retaining member is inserted among the plurality of grooves. It is not necessary to prepare a number of selector switches with locks corresponding to the types of retaining positions, and parts management becomes easy.
Japanese Patent Laid-Open No. 01-122527

  In recent years, pin tumbler locks are frequently used in place of plate tumbler locks in order to prevent unauthorized operation.

  However, the pin tumbler lock has a problem that the retaining position cannot be easily changed due to the structure. That is, the pin tumbler lock includes an inner cylinder and an outer cylinder. The inner cylinder is formed with a key hole opened on the front surface, and a plurality of tumbler holes extending in the radial direction between the key hole and the peripheral surface along the axial direction. A tumbler pin is held in each of the plurality of tumbler holes so as to be movable in the radial direction. The outer cylinder rotatably supports the inner cylinder, and includes a radial drive hole that faces the tumbler pin at each of a plurality of rotational positions of the inner cylinder. A drive pin that presses the tumbler pin toward the center is held in the drive hole so as to be movable in the radial direction.

  In the conventional pin tumbler lock, when the inner cylinder is in the retaining position, the tumbler pin cannot be moved in the radial direction by not forming the drive hole facing the tumbler pin in the outer cylinder, and the extraction of the key from the key hole is restricted. is doing.

  For this reason, when using a pin tumbler lock, it is conceivable to change the configuration of the outer cylinder in order to change the retaining position, but a number of selector switches with locks corresponding to the type of retaining position are prepared. Therefore, parts management becomes complicated.

  An object of the present invention is to make it possible to easily change the retaining position without changing the structure of the outer cylinder, to realize a plurality of types of retaining positions with a single configuration, and to facilitate parts management. And providing a pin tumbler locking device.

  The pin tumbler lock according to the present invention includes an inner cylinder, an outer cylinder, and a retaining pin. The inner cylinder houses a tumbler pin that is displaced in the radial direction according to the shape of the key inserted into the keyhole. The outer cylinder rotatably supports the inner cylinder and stores drive pins that oppose the tumbler pins at each of a plurality of rotational positions of the inner cylinder and press the tumbler pins toward the center of the inner cylinder. The retaining pin is detachably inserted into the outer cylinder from the back side, and restricts the movement of the drive pin facing the tumbler pin at the rotational position of at least one of the plurality of drive pins to the outside. .

  When the retaining pin is inserted into the outer cylinder from the back side, the movement of the drive pin to the outside is restricted, and the tumbler pin facing this drive pin cannot move to the outside and remains engaged with the key, The key cannot be pulled out.

The outer cylinder is provided with an elastic member that urges the drive pin toward the center of the inner cylinder. The plurality of drive pins include a recess that is open on a surface opposite to the surface facing the tumbler pin and in which an elastic member is disposed. The retaining pin contacts the outside of the recess on the opposite surface of the drive pin. When the retaining pin is inserted into the outer cylinder, it contacts only the drive pin and does not contact the elastic member. The retaining pin can be easily inserted into and removed from the back side of the outer cylinder.

  The pin tumbler locking device according to the present invention includes the pin tumbler lock, the rotating cam, and the contact portion. The rotating cam is coaxially fixed to the back side of the inner cylinder and rotates integrally with the inner cylinder. The contact portion controls the operation of the movable contact based on the rotation of the rotating cam.

  Due to the rotation of the inner cylinder of the pin tumbler lock, the rotary cam rotates integrally, and the operation of the movable contact is controlled. The open / close state of the contact portion changes according to the rotation position of the inner cylinder.

  According to this invention, by inserting the retaining pin from the back side into the outer cylinder at any of a plurality of rotational positions, the movement of the drive pin to the outside at the rotational position is restricted, and the pin is moved outward. It is possible to keep the key engaged without being moved. The rotational position where the retaining pin is inserted can be used as the retaining position, and the retaining position can be selected without changing the structure of the outer cylinder by selectively inserting the retaining pin into any of the multiple rotational positions. Can be changed. Multiple types of retaining positions can be realized with a single configuration, and parts management can be facilitated.

  FIG. 1 is a front view of a pin tumbler lock according to an embodiment of the present invention. The pin tumbler lock 10 includes an inner cylinder 1 and an outer cylinder 2. The inner cylinder 1 is accommodated in the outer cylinder 2 so as to be rotatable coaxially with the outer cylinder 2. A keyhole 11 is opened on the front surface of the inner cylinder 1.

  The inner cylinder 1 can be stopped at the first rotation position and the second rotation position. As an example, the longitudinal direction of the keyhole 11 on the front surface of the inner cylinder 1 is vertical at the first rotation position, and is a second rotation position obtained by rotating the inner cylinder 1 90 degrees clockwise from the first rotation position. Become horizontal. On the front surface of the outer cylinder 2, the insertion / removal position and the retaining position are indicated by markings 24 and 25 as an example.

  FIG. 2 is a side sectional view of the pin tumbler lock. 2A is a side cross-sectional view at the first rotational position, and FIG. 2B is a side cross-sectional view at the second rotational position.

  In the inner cylinder 1, for example, three tumbler holes 12A to 12C are formed in a line along the central axis. Each tumbler hole 12 </ b> A to 12 </ b> C penetrates between the key hole 11 and the peripheral surface of the inner cylinder 1 in the radial direction of the inner cylinder 1 and faces the side surface of the key 30 inserted into the key hole 11. The tumbler pins 3 are accommodated in the tumbler holes 12 </ b> A to 12 </ b> C so as to be movable in the radial direction of the inner cylinder 1.

  In the outer cylinder 2, three drive holes 21A to 21C and three drive holes 22A to 22C are formed in a line along the central axis. The drive holes 21A to 21C oppose the tumbler holes 12A to 12C when the inner cylinder 1 is at the first rotation position. The drive holes 22A to 22C are opposed to the tumbler holes 12A to 12C when the inner cylinder 1 is at the second rotational position. The drive holes 21 </ b> A to 21 </ b> C and 22 </ b> A to 22 </ b> C are formed in the radial direction of the outer cylinder 2.

  In each of the drive holes 21A to 21C and 22A to 22C, a drive pin 4 is housed so as to be movable in the radial direction of the outer cylinder 2, and a coil spring 5 is disposed outside each drive pin 4. The coil spring 5 is an elastic member of the present invention. Each drive pin 4 presses the tumbler pin 3 toward the center of the inner cylinder 1 by the elastic force of the coil spring 5. Each tumbler pin 3 is fitted into each of the recesses 31 </ b> A to 31 </ b> C formed at three locations on the side surface of the key 30.

  When the key 30 is inserted into the keyhole 11, the tumbler pin 3 and the drive pin 4 once move outward, and then move toward the center by the elastic force of the coil spring 5, and fit into the recesses 31A to 31C. When pulling out the key 30 from the keyhole 11, it is necessary to move the tumbler pin 3 inserted into the recesses 31A to 31C to the outside together with the drive pin 4 to release the insertion state of the tumbler pin 3 into the recesses 31A to 31C. .

  FIG. 3 is a rear view of the pin tumbler lock. A retaining hole 23 is opened on the back surface of the outer cylinder 2. A retaining pin 6 is inserted into the retaining tube 23 from the back side into the outer cylinder 2. The retaining hole 23 is open to at least a part of the drive hole 22C on the rearmost side among the drive holes 22A to 22C. The retaining pin 6 inserted into the retaining hole 23 is a drive hole 22 </ b> C on the rearmost side, abuts on the outside of the drive pin 4, and does not contact the coil spring 5. When the retaining pin 6 is inserted into the retaining hole 23, the outward movement of the drive pin 4 within the drive hole 22C is restricted.

  In a state where the inner cylinder 1 is at the first rotation position and the tumbler holes 12A to 12C are opposed to the drive holes 21A to 21C, the drive pins 4 can move outward in all of the drive holes 21A to 21C, and the tumbler The pin 3 can move outward in all of the holes 12A to 12C. When the inner cylinder 1 is in the first rotation position, the state of the tumbler pin 3 inserted into the recesses 31 </ b> A to 31 </ b> C can be released, and the key 30 can be inserted into and removed from the keyhole 11.

  When the retaining pin 6 is inserted into the retaining hole 23, when the inner cylinder 1 is at the second rotational position and the tumbler holes 12A to 12C are opposed to the drive holes 22A to 22C, the rearmost tumbler The movement of the tumbler pin 3 is restricted in the hole 12C. When the inner cylinder 1 is in the second rotational position, the state where the tumbler pin 3 is inserted into the recess 31 </ b> C cannot be released, and the key 30 is not pulled out of the keyhole 11.

  By selecting whether or not the retaining pin 6 is inserted into the retaining hole 32, the second rotational position of the inner cylinder 1 can be selectively set as the retaining position according to the use situation.

  The retaining pin 6 inserted into the retaining hole 23 contacts the outside of the drive pin 4 and does not contact the coil spring 5. For this reason, the retaining pin 6 can be easily inserted into and removed from the retaining hole 23.

  The retaining holes 23 may be formed so as to be open to a plurality or all of the drive holes 22A to 22C including the drive hole 22C on the rearmost side. The movement of the plurality of tumbler pins 3 and the plurality of drive pins 4 to the outside can be regulated, and the withdrawal of the key from the keyhole 11 can be more reliably prohibited.

  The retaining hole 23 can be provided not only at the position opening to the drive hole 22C but also at the position opening to the drive hole 21C. Depending on the use situation, either the first rotation position or the second rotation position of the inner cylinder 1 can be selectively set as the retaining position. Even when the first to third rotational positions at which the inner cylinder 1 is selectively stopped are set as in the pin tumbler lock 10 ′ in which the inscriptions 24 to 26 are written (see FIG. 4), The retaining holes 23 can be provided at positions corresponding to some or all of them. The same applies when four or more rotational positions at which the inner cylinder 1 is selectively stopped are set.

  With the above configuration, the pin tumbler lock 10 having a single structure can be set at any rotation position among the plurality of rotation positions of the inner cylinder 1 according to the use situation. It is not necessary to prepare a plurality of pin tumbler locks having different structures according to the use situation, and parts management becomes easy. Further, the retaining pin 6 can be inserted into and removed from the retaining hole 23, and can be reused by being inserted or pulled out.

  In the example shown in FIG. 3, the retaining hole 23 has a circular cross section, and the retaining pin 6 has a cylindrical shape. The retaining hole 23 and the retaining pin 6 can have other shapes on condition that the movement of the drive pin 4 to the outside can be regulated without contacting the coil spring 5. For example, as shown in FIG. 5A, retaining holes 23 'may be formed on both sides of the coil spring 5, and the retaining pins 6' may be shaped as shown in FIG. 5B. By making it the shape shown in FIG. 5, the movement to the outer side of the drive pin 4 can be controlled more reliably.

  FIG. 6 is a side sectional view showing a configuration of a selector switch which is an example of the pin tumbler locking device according to the embodiment of the present invention. The selector switch 20 includes a pin tumbler lock 10, a rotating cam 7, an operation member 8, a contact portion 9, an outer frame 41, an inner frame 42, a holder 43, a packing 44, a mounting frame 45, a mounting nut 46, a set screw 47, and a fixed frame. 48 is provided.

  The pin tumbler lock 10 is configured so that at least one of a plurality of rotational positions of the inner cylinder 1 is prevented from being removed by selectively inserting the retaining pin 6 into the retaining hole 23 according to the use state of the selector switch 20. It is said. After the pin tumbler lock 10 is stored in the holder 43, the pin tumbler lock 10 is held in the outer frame 41 via the packing 44.

  The rotating cam 7 is coaxially fixed to the back surface of the inner cylinder 1 via a set screw 47. The rotating cam 7 changes the axial position of the end portion on the back side along the circumferential surface.

  The operation member 8 is held by the fixed frame 48 so as to be movable in the axial direction inside the inner frame 42. The operation member 8 has a front-side end in contact with a back-side end of the rotating cam 7, and the back-side end is inserted into the contact portion 9.

  The contact portion 9 is attached to and supported by the back surface of the inner frame 42 on the back surface side of the pin tumbler lock 10. The contact portion 9 includes a fixed contact and a movable contact inside. The contact portion 9 opens and closes an electric circuit (not shown) between the fixed contact and the movable contact. An end portion on the back side of the operation member contacts the movable contact in the contact portion 9. The inner frame 42 corresponds to the support member of the present invention.

  The selector switch 20 is attached to a control panel or the like by sandwiching a panel plate or the like between the flange portion on the front side of the outer frame 41 and the attachment frame 45.

  By rotating the inner cylinder 1 through the key 30 inserted into the key hole 11, the rotating cam 7 rotates integrally with the inner cylinder 1. Due to the rotation of the rotary cam 7, the position where the front side end of the operating member 8 abuts on the back side end of the rotary cam 7 is displaced. The operation member 8 is displaced in the axial direction in accordance with the position in the axial direction of the rear side end of the rotary cam with which the front side end abuts, and the movable contact according to the rotational position 8 of the inner cylinder 1 by the rear side end. Press toward the fixed contact.

  The electric circuit can be opened and closed in the contact portion 9 according to the rotational position of the inner cylinder 1 in the pin tumbler lock 10. Depending on the configuration of the contact portion 9, the relationship between the rotational position of the inner cylinder 1 and the open / closed state of the contact changes variously, and it is prohibited to pull out the key 30 inserted into the key hole 11 among the plurality of rotational positions of the inner cylinder 1. The rotational position to be changed also changes. By appropriately selecting the position where the retaining pin 6 is inserted with the pin tumbler lock 10 having a single structure according to the configuration of the contact portion 9, the relationship between the rotational position of the inner cylinder 1 and the open / closed state of the contact can be changed. This makes it possible to manage parts easily.

  The device with a pin tumbler lock of the present invention is coaxially fixed to the back side of the inner cylinder and controls the operation of the movable contact based on the rotation cam rotating integrally with the inner cylinder. What is necessary is just to have a contact part. For example, in addition to the selector switch in which the operation of the movable contact is controlled based on the rotation of the rotating cam as described above, a push button switch, a safety switch, or a control panel may be used. When the present invention is applied to a push button switch, the conventional push button switch is provided with a pin tumbler lock and a rotating cam, and when the push button is pressed, the return of the push button is regulated by the rotating cam at a position where the contact is turned on or off. The pin tumbler lock can be operated (a configuration in which the return of the push button is permitted by rotating the rotating cam).

  FIG. 7 is a front view of a plate key 300 used in a pin tumbler lock 10 'according to still another embodiment of the present invention. FIG. 8 is a diagram showing the configuration and operation of a pin tumbler lock 10 ′ in which the plate key 300 is used. 8B and 8D are cross-sectional views at cross-sectional positions Z1-Z1 and Z2-Z2 in FIGS. 8A and 8C, respectively.

  The plate key 300 is a flat lock and includes an insertion unit 31 and an operation unit 32. The insertion part 31 is inserted into the keyhole 11. The operation unit 32 is held by fingers. In the insertion portion 31, three recesses 33 </ b> A to 33 </ b> C and three recesses 34 </ b> A to 34 </ b> C are formed in two rows along the insertion direction X of the plate key 300 with respect to the keyhole 11. Concave portions 33A to 33C and concave portions 34A to 34C are also formed on the back surface of the plate key 300 in the same manner as the front surface.

  The pin tumbler lock 10 ′ includes a total of six tumbler pins 3, three on each side across the keyhole 11. When the plate key 300 is inserted into the key hole 11 of the pin tumbler lock 10 ′, each of the six tumbler pins 3 is fitted into the front recesses 34 </ b> A to 34 </ b> C and the rear recesses 33 </ b> A to 33 </ b> C of the plate key 300. When the plate key 300 is reversed and inserted into the keyhole 11, each of the six tumbler pins 3 is fitted into the recesses 34A to 34C on the back surface and the recesses 33A to 33C on the front surface of the plate key 300.

  The pin tumbler lock 10 ′ includes three tumbler pins 3 at a constant pitch PA on both sides of the keyhole 11. The plate key 300 has a pitch PA between the recesses 33A and 33B, between the recesses 33B and 33C, between the recesses 34A and 34B, and between the recesses 34B and 34C shorter than the pitch PA. The pitch is PB. The recess 34C is a predetermined recess according to the present invention.

  In addition, when it is not necessary to reverse the board key 300 so that it can be inserted into the keyhole 11, only the recesses 34A to 34C may be formed on the front surface and only the recesses 33A to 33C may be formed on the back surface.

  When the retaining hole 23 is machined in the pin tumbler lock 10 ′, a tolerance is given to the outside in the radial direction from the design position on the back surface of the outer cylinder 2 in consideration of machining accuracy. This is because if the retaining hole 23 is formed radially inward from the designed position on the back surface of the outer cylinder 2, the retaining pin 6 cannot be inserted due to interference with the drive pin 4. Accordingly, the retaining hole 23 is formed within an error range between a design position on the back surface of the outer cylinder 2 and a position biased outward in the radial direction by a tolerance relative to the design position. .

  Since the retaining hole 23 may be located within a predetermined error range, the plate key 300 ′ (see FIG. 9) in which all of the concave portions 33A to 33C and the concave portions 34A to 34C are arranged at the pitch PA is used to prevent the retaining holes 23 from being detached. The position cannot be rotated while a force in the pulling direction from the keyhole 11 is applied.

  That is, when all of the recesses 33A to 33C and the recesses 34A to 34C are arranged with the pitch PA, as shown in FIGS. 9 (A) and 9 (B), a force in the pulling direction is not applied to the plate key 300 '. The tumbler pins 3 are equally inserted into all of the recesses 33A to 33C and the recesses 34A to 34C. At this time, there is a tolerance gap between the drive pin 4 (predetermined drive pin) and the retaining pin 6. When a force in the pulling direction is applied to the plate key 300 'from this state, as shown in FIGS. 9C and 9D, the tumbler pin 3 (predetermined tumbler pin) fitted in the recess 34C and the recess 34C After the contact with the inclined surface, the plate key 300 ′ moves in the pulling direction until the drive pin 4 contacts the retaining pin 6. During this time, each of the tumbler pins 3 fitted in the recesses 33A to 33C is pushed outward in the radial direction by the inclined surfaces of the recesses 33A to 33C, and straddles between the inner cylinder 1 and the outer cylinder 2. As a result, the inner cylinder 1 cannot be rotated together with the plate key 300 '.

  Therefore, the pitch PB between the concave portion 34C into which the tumbler pin 3 on which the retaining pin 6 acts and the concave portion 34B adjacent to the concave portion 34C is made smaller than the pitch PA of the tumbler pin 3 is shown in FIGS. ), The tumbler pin 3 fitted in the recess 34C and the inclined surface of the recess 34C are brought into contact with each other in a state where no force in the pulling direction is applied to the plate key 300. When force in the pulling direction is applied to the plate key 300 from this state, the tumbler pin 3 fitted in the recess 34C immediately moves outward as shown in FIGS. 8C and 8D, and the drive pin 4 It contacts the retaining pin 6. During this time, the amount of movement of the plate key 300 in the pull-out direction is small, so that each of the tumbler pins 3 fitted in the recesses 33A to 33C is hardly pushed outward in the radial direction, and the inner cylinder 1 is moved together with the plate key 300. Can be rotated.

  As described above, as shown in FIG. 7, when the pitch PB between the recesses 34B and 34C is made smaller than the pitch PA of the tumbler pins 3, a force in the pulling direction acts on the plate key 300. In addition, the pin tumbler lock 10 ′ can be reliably rotated via the plate key 300.

The difference S between the pitch PA and the pitch PB is calculated from the tolerance D and the angle θ of the inclined surface of the concave portion 34C as follows: S = PA−PB = D · tan θ
Sought by.

  Similarly to the pin tumbler lock 10, the pin tumbler lock 10 ′ using the plate key 30 ′ can be applied to a pin tumbler locking device such as a selector switch, a push button switch, a safety switch, or a control panel.

It is a front view of the pin tumbler lock which concerns on embodiment of this invention. It is side surface sectional drawing in the 1st rotation position of the said pin tumbler lock, and side surface sectional drawing in the 2nd rotation position. It is a rear view of the said pin tumbler lock. It is a front view of the pin tumbler lock which concerns on another embodiment of this invention. It is a figure which shows the other example of the retaining hole applied to the said pin tumbler lock, and a retaining pin. It is side surface sectional drawing which shows the structure of the selector switch which is an example of the pin tumbler locking apparatus which concerns on embodiment of this invention. It is a front view of the plate key used for the pin tumbler lock which concerns on another embodiment of this invention. It is a front view of the pin tumbler lock which concerns on another embodiment of this invention. It is a figure which shows the structure and operation | movement of a pin tumbler lock in which the same plate key is used. It is a figure which shows the structure and operation | movement of a pin tumbler lock when a recessed part is formed in the same plate key with a fixed pitch.

Explanation of symbols

1 Inner cylinder 2 Outer cylinder 3 Tumbler pin 4 Drive pin 5 Coil spring (elastic member)
6 Retaining Pin 7 Rotating Cam 8 Operation Member 9 Contact Part 10 Pin Tumbler Lock 11 Keyhole 12A-12C Tumbler Hole 20 Selector Switch 21A-21C Drive Hole 22A-22C Drive Hole 23 Retaining Hole

Claims (4)

An inner cylinder containing a tumbler pin that is displaced in the radial direction according to the shape of the key inserted into the key hole;
An outer housing housing a plurality of drive pins that rotatably support the inner cylinder and press the tumbler pins toward the center of the inner cylinder so as to face the tumbler pins at each of a plurality of rotational positions of the inner cylinder. A tube,
The drive pin facing the tumbler pin at the rotational position of at least one of the plurality of rotational positions among the plurality of drive pins is detachably inserted into the outer cylinder from the rear side. Provided with a retaining pin ,
The outer cylinder further includes an elastic member that urges the drive pin toward the center of the inner cylinder on the same axis as the drive pin,
The retaining pin is inserted at a position that contacts the drive pin and does not contact the elastic member,
The plurality of drive pins include a recess that is open to a surface opposite to a surface facing the tumbler pin and in which the elastic member is disposed,
The pin tumbler lock , wherein the retaining pin is in contact with the outside of the concave portion on the opposite surface of the drive pin . The stopper pin cylinder lock according to claim 1 you contact only a single drive pin of the plurality of drive pins. An inner cylinder that stores a plurality of tumbler pins that are displaced in the radial direction according to the shape of the plate key inserted into the keyhole, each at a constant pitch along the insertion direction of the plate key on both sides of the keyhole,
The inner cylinder is rotatably supported, and each of the plurality of tumbler pins is pressed toward the center of the inner cylinder so as to face each of the plurality of tumbler pins at each of a plurality of rotational positions of the inner cylinder. An outer cylinder containing a plurality of drive pins;
The outer drive of the predetermined drive pin facing the predetermined tumbler pin among the plurality of tumbler pins at at least one rotational position of the plurality of rotational positions among the plurality of drive pins, A retaining pin that can be inserted and removed from the back side in the outer cylinder,
The plate key is formed along the insertion direction with a plurality of recesses into which each of the plurality of tumbler pins fits on each of the front surface and the back surface.
Of the plurality of recesses, the recesses other than the predetermined recesses into which the predetermined tumbler pins are fitted are arranged at the constant pitch, and the pitch between the recesses other than the predetermined recesses and the predetermined recesses is the constant pitch. Pin tumbler tablets characterized by being smaller than   Based on the pin tumbler lock according to any one of claims 1 to 3, a rotating cam fixed coaxially to the back side of the inner cylinder and rotating integrally with the inner cylinder, and rotation of the rotating cam A pin tumbler locking device comprising: a contact portion for controlling the operation of the movable contact.

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