JP4648085B2 - Cylinder lock and first key, second key, reset key, master key used for cylinder lock - Google Patents

Description

  In the present invention, when a single key (first key) that is originally used for one cylinder lock is used with a new key (second key) having a changed shape or the like, It is a cylinder lock that is a conversion lock that can change the user to a new user only by changing the key, making the original key (first key) unusable without changing it. The cylinder lock is a reversible conversion lock capable of reverse conversion, and is particularly suitable for use in a pin tumbler type cylinder lock. The reverse conversion, that is, the original key (first key) can be used again. The present invention relates to a reset key and a master key used at the time.

  In general, rental apartments such as rental apartments and rental apartments use cylinder locks at the doors of the doors, and a single key is used for this lock, and locking / unlocking is under the control of the resident. Become. Then, when moving out, the key is returned to the manager of the apartment, etc., and is given to the next new resident.

However, new residents feel reluctant to use the same key as the previous tenant, and crime prevention is possible if the previous tenant has duplicated the key as a spare key or lost it. Since the property is lowered and an intrusion case or the like may occur, it is preferable for the administrator to replace the lock when entering and leaving. In addition, the exchange of the cylinder lock is an appeal when recruiting a new resident, and the new resident can rent the rental property with peace of mind.
However, in the case of management with a new key, replacement of the cylinder lock becomes indispensable, and the replacement work requires a construction period, resulting in high costs. In particular, when managing many living rooms, the management of keys becomes very complicated.

  Conventionally, the above-mentioned initial key (hereinafter referred to as the first key) is operated with the new key (hereinafter referred to as the second key) to the next user, and the previous key (No. One key) uses a conversion lock that cannot be used.

  For this conversion lock, the first key and the second key can be used. The depth of the dimple formed at the predetermined position of the second key is shallower than the depth of the dimple formed at the same position of the first key. A pin accommodating hole is formed in both the inner cylinder in which the key hole into which the first key and the second key are selectively inserted and the outer cylinder to be externally inserted into the inner cylinder. The pin accommodation hole accommodates a tumbler pin for allowing the tip pin to enter the dimple of the key inserted into the key hole. An intermediate pin is provided at the rear of the tumbler pin. The intermediate pin is disposed in the inner cylinder side pin receiving hole when the tip pin enters the dimple of the first key, while the tip pin enters the dimple of the second key. When it is done, it is arranged in the outer cylinder side pin accommodation hole. Moreover, the intermediate pin accommodation recessed part which accommodates an intermediate pin is formed in the outer periphery of an inner cylinder.

  Therefore, in the inserted state of the first key, the intermediate pin is disposed in the inner cylinder side pin receiving hole, so that the tumbler pin does not straddle the shear line that is the boundary between the outer periphery of the inner cylinder and the inner periphery of the outer cylinder. It becomes possible to rotate the inner cylinder. On the other hand, when the second key is inserted for the first time from the use state of the first key, the intermediate pin is disposed in the outer cylinder side pin receiving hole, and when the second key is rotated in this state, the intermediate pin is It remains in the cylinder side pin accommodation hole. And the intermediate pin accommodation recessed part formed in the outer periphery of an inner cylinder corresponds with an intermediate | middle pin, and an intermediate | middle pin is accommodated and hold | maintained at an intermediate | middle pin accommodation recessed part. As a result, the tumbler pin is shortened by the removal of the intermediate pin, and even after the first key is inserted, the tumbler pin is no longer the original length, so the driver pin that contacts the tumbler pin crosses the shear line. The cylinder becomes unrotatable and the first key cannot be accepted. As a result, use of only the second key is accepted thereafter. Such a conversion lock can be referred to as an irreversible conversion lock in which the use state can be converted in one direction from the first key state to the second key state.

  However, once the second key is used in the conventional conversion lock, the intermediate pin remains held in the intermediate pin receiving recess, and even if it is desired to use the first key after that, There was inconvenience that use was not accepted.

  In addition, for example, as an administrator, a system with a so-called master key that enables a locking / unlocking operation in either state with respect to both combined key states, and operation from the first key to the second key can be performed. In addition, there is a case where it is desired to construct a lock system that enables re-conversion from the second key operation to the first key operation. However, as described above, since the length of the tumbler pin by the intermediate pin is physically changed, it is possible to lock and unlock with one master key in any use state. In order to operate with these two types of combined key and master key, it is impossible to use an electronic lock, and the encryption information set in the first key, second key, and master key is decrypted with the electronic lock. However, the apparatus is expensive and requires power supply by a commercial power source or a battery. When power is not supplied, there is a problem that the operation becomes impossible.

In addition, each time a resident changes, if a conversion lock, a combined key, and a master key are exchanged, a large cost is incurred.
From this situation, power supply is unnecessary, conversion from the first key to the second key is possible, and conversion to the first key is possible again after conversion to the second key. Development of a conversion tablet (hereinafter referred to as “reversible conversion tablet”) has been desired. Further, there is a demand that this reversible conversion tablet can be used with a master key in any conversion state.

  The present invention has been made in view of the above situation. The first object of the present invention is that power supply is unnecessary, conversion from the first key to the second key is possible, and after conversion to the second key. Even so, it is to provide a cylinder lock that can be converted to the first key again, that is, the two key keys can be used operatively and can be changed to either one. . In addition, the second purpose is that the master key can be used for unlocking / unlocking operation regardless of the conversion state of the first key or the second key, that is, whichever of the two combined keys is used. It is in providing the cylinder lock which becomes.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The cylinder lock 100 according to claim 1 of the present invention includes:
An outer cylinder 11,
An inner cylinder 13 which has a key hole 17 and is rotatably provided in the outer cylinder 11 to form a shear line 53 between an outer periphery and an inner periphery of the outer cylinder 11;
A driver pin 39 accommodated in the outer cylinder 11 and a tumbler pin 31 accommodated in the inner cylinder 13;
A first key 15A which is inserted into the key hole 17 and makes the boundary between the tumbler pin 31 and the driver pin 39 coincide with the shear line 53;
When the first key 15A is in use, the first key 15A is used by converting the pin combination of the tumbler pin 31 and the driver pin 39 by being inserted into the key hole 17 and operated. A second key 15B for disabling and making the boundary between the tumbler pin 31 and the driver pin 39 a new combination to match the shear line 53;
The first key 15A and the second key 15B are configured separately from each other, and are inserted into the key hole 17 and operated to convert the pin combination converted by the second key 15B. A reset key 15D that disables the second key 15B and converts the first key 15A into a pin combination that can be used again;
It is characterized by comprising.

  In the cylinder lock 100, when the second key 15B is used in a state where the first key 15A is used as a key, the tumbler pin 31 that forms a boundary with the first key 15A and the The combination with the driver pin 39 is converted, and the boundary between the tumbler pin 31 and the driver pin 39 in the second key 15B is the shear line. The key 15A becomes unusable. In the usable state of the second key 15B, the reset key 15D, which is a key different from the first key 15A and the second key 15B, is used and operated, whereby the second key 15B. The pin combination is converted to a state in which the first key 15A can be used again.

The cylinder lock 100 according to claim 2 of the present invention includes:
An outer cylinder 11,
An inner cylinder 13 which has a key hole 17 and is rotatably installed in the outer cylinder 11 to form a shear line 53 with the inner periphery of the outer cylinder 11;
A plurality of outer cylinder side pin accommodation holes 25 and a plurality of inner cylinder side pin accommodation holes 27 formed in the radial direction of the outer cylinder 11 and the inner cylinder 13;
A driver pin 39D accommodated in the outer cylinder side pin accommodation hole 25D;
A tumbler pin 31D accommodated in the inner cylinder side pin accommodation hole 27D;
A stepped driver pin 39F accommodated in another outer cylinder side pin accommodation hole 25F;
A switching tumbler pin 31F housed in another inner cylinder side pin housing hole 27F;
One intermediate portion selectively accommodated in the outer cylinder side pin accommodation hole 25D, the inner cylinder side pin accommodation hole 27D, the other outer cylinder side pin accommodation hole 25F, or the other inner cylinder side pin accommodation hole 27F. Pin 35;
When the intermediate pin 35 is in the first arrangement position st1 located between the driver pin 39D and the tumbler pin 31D, the intermediate pin 35 and the driver inserted in the key hole 17 and arranged at the rear portion of the tumbler pin 31D. A first key 15A for making the boundary with the pin 39D coincide with the shear line 53;
The intermediate pin 35 is inserted into the key hole 17 and disposed at the rear portion of the switching tumbler pin 31F when the intermediate pin 35 is at the second arrangement position st2 positioned between the stepped driver pin 39F and the switching tumbler pin 31F. A second key 15B for making the boundary between the pin 35 and the stepped driver pin 39F coincide with the shear line 53;
Comprising
When the intermediate pin 35 is at the first arrangement position st1, the second key 15B is inserted to move the intermediate pin 35 to the outer cylinder side pin accommodating hole 25D, so that the intermediate pin 35 and the intermediate pin 35 are The boundary with the tumbler pin 31D coincides with the shear line 53, and the second key 15B is rotated by a predetermined angle to move the intermediate pin 35 to the other inner cylinder side pin accommodation hole 31F, so that the intermediate pin 35 is accommodated between the stepped driver pin 39F and the switching tumbler pin 31F and converted into the second arrangement position st2,
When the intermediate pin 35 is at the second arrangement position st2, the intermediate pin 35 is inserted into the key hole 17 and pulled out by a predetermined length l so that the intermediate pin 35 arranged at the rear portion of the switching tumbler pin 31F is connected to the stepped driver pin 39F. Move to the other outer cylinder side pin accommodation hole 25F to be accommodated so that the boundary between the intermediate pin 35 and the switching tumbler pin 31F coincides with the shear line 53, and after a predetermined angle rotation, push in the predetermined length l The intermediate pin 35 is moved to the inner cylinder side pin accommodation hole 27D in which the tumbler pin 31D is accommodated so that the boundary between the intermediate pin 35 and the stepped driver pin 39F is aligned with the shear line 53, A reset key 15D is provided for rotating the intermediate pin 35 to the first arrangement position st1 by rotating the predetermined angle in a direction opposite to the predetermined angle rotation. Characterized in that it.

  In the cylinder lock 100, the first key 15A becomes unusable when the second key 15B is used while the first key 15A is being used. Thereafter, by using the reset key 15D, the use state of the second key 15B can be changed to the use state of the first key 15A. In the reset key 15D, the intermediate pin 35 positioned in the other inner cylinder side pin accommodation hole 27F in which the switching tumbler pin 31F is accommodated is accommodated in the stepped driver pin 39F in the use state of the second key 15B. Is once moved to the outer cylinder side pin accommodation hole 25F. In this state, after the inner cylinder 13 is rotated by a predetermined angle together with the reset key 15D, the intermediate key 35 is moved to the inner cylinder side pin accommodation hole 27D in which the tumbler pin 31D is accommodated by pressing the reset key 15D for a predetermined length. . Thereby, the intermediate pin 35 is rearranged to a usable pin combination position of the first key 15A.

The cylinder lock 200 according to claim 3 is:
An outer cylinder 11,
An inner cylinder 13 which has a key hole 17 and is rotatably installed in the outer cylinder 11 to form a shear line 53 with the inner periphery of the outer cylinder 11;
A plurality of outer cylinder side pin accommodation holes 25 and a plurality of inner cylinder side pin accommodation holes 27 formed in the radial direction of the outer cylinder 11 and the inner cylinder 13;
A driver pin 39D accommodated in the outer cylinder side pin accommodation hole 25D;
A tumbler pin 31D accommodated in the inner cylinder side pin accommodation hole 27D;
A stepped driver pin 39F accommodated in another outer cylinder side pin accommodation hole 25F;
A switching tumbler pin 31F housed in another inner cylinder side pin housing hole 27F;
One intermediate portion selectively accommodated in the outer cylinder side pin accommodation hole 25D, the inner cylinder side pin accommodation hole 27D, the other outer cylinder side pin accommodation hole 25F, or the other inner cylinder side pin accommodation hole 27F. Pin 35;
When the intermediate pin 35 is in the first arrangement position st1 located between the driver pin 39D and the tumbler pin 31D, the intermediate pin 35 and the driver inserted in the key hole 17 and arranged at the rear portion of the tumbler pin 31D. A first key 15A for making the boundary with the pin 39D coincide with the shear line 53;
The intermediate pin 35 is inserted into the key hole 17 and disposed at the rear portion of the switching tumbler pin 31F when the intermediate pin 35 is at the second arrangement position st2 positioned between the stepped driver pin 39F and the switching tumbler pin 31F. A second key 15B for making the boundary between the pin 35 and the stepped driver pin 39F coincide with the shear line 53;
Comprising
When the intermediate pin 35 is at the first arrangement position st1, the second key 15B is inserted to move the intermediate pin 35 to the outer cylinder side pin accommodating hole 25D, so that the intermediate pin 35 and the intermediate pin 35 are The boundary with the tumbler pin 31D coincides with the shear line 53, and the second key 15B is rotated by a predetermined angle to move the intermediate pin 35 to the other inner cylinder side pin accommodation hole 31F, so that the intermediate pin 35 is accommodated between the stepped driver pin 39F and the switching tumbler pin 31F and converted into the second arrangement position st2,
When the intermediate pin 35 is at the second arrangement position st2, a boundary between the intermediate pin 35 and the stepped driver pin 39F that is inserted into the key hole 17 and arranged at the rear of the switching tumbler pin 31F is the shear line 53. The intermediate pin 35 is pulled out by a predetermined length l after being rotated by a predetermined angle to move the intermediate pin 35 to the outer cylinder side pin receiving hole 25D in which the driver pin 39D is accommodated, and the intermediate pin 35 and the switching tumbler pin 31F The intermediate pin 35 is brought into contact with the tumbler pin 31D by rotating it by a predetermined angle in the direction opposite to the predetermined angle rotation, so that the intermediate pin 35 is brought into the first arrangement position st1. And a reset key 15E for matching the boundary of the tumbler pin 31D with the shear line 53. That.

  In this cylinder lock 200, when the second key 15B is used while the first key 15A is being used, the first key 15A becomes unusable. Thereafter, by using the reset key 15E, the use state of the second key 15B can be changed to the use state of the first key 15A. The reset key 15E is inserted into the key hole 17 and rotated by a predetermined angle, so that the reset key 15E is positioned in the other inner cylinder side pin accommodation hole 27F in which the switching tumbler pin 31F is accommodated when the second key 15B is used. The intermediate pin 35 is once moved to the outer cylinder side pin accommodation hole 25D in which the driver pin 39D is accommodated. By pulling out the reset key 15E by a predetermined length l in this state, the intermediate pin 35 disposed at the rear part of the switching tumbler pin 31F is moved to the outer cylinder side pin accommodation hole 25D in which the driver pin 39D is accommodated. Further, by rotating a predetermined angle in the opposite direction to the above-mentioned predetermined angle rotation, the intermediate pin 35 is rearranged to a usable pin combination position (first arrangement position st1) of the first key 15A.

  The cylinder locks 100 and 200 according to claim 4 are inserted into the key holes 17 and the outer cylinder side pin accommodating holes 25D in which the intermediate pins 35 are accommodated in the driver pins 39D when the first key 15A is usable. And the boundary between the intermediate pin 35 and the tumbler pin 31D is aligned with the shear line 53, and the intermediate pin 35 is accommodated in the stepped driver pin 39F in a usable state of the second key. And a master key 15C for moving the intermediate pin 35 and the switching tumbler pin 31F to the shear line 53.

  In the cylinder locks 100 and 200, when the intermediate pin 35 is disposed at a usable pin combination position of the first key 15A, that is, the inner cylinder side pin accommodation hole 27D in which the tumbler pin 31D is accommodated, or In any case, the intermediate pin 35 and the tumbler pin 31D are arranged in the usable pin combination position of the second key 17B, that is, the inner cylinder side pin accommodation hole 27F in which the switching tumbler pin 31F is accommodated. Or the boundary between the intermediate pin 35 and the switching tumbler pin 31F can coincide with the shear line 53.

  A first key 15A used for the cylinder lock according to claim 5 is a key used for the cylinder locks 100, 200 according to any one of claims 1, 2, 3, and 4, wherein the cylinder lock 100, 200 is used for the operation of locking and unlocking.

  A second key 15B used for the cylinder lock according to claim 6 is a key used for the cylinder lock 100, 200 according to any one of claims 1, 2, 3 and 4, wherein the first key When the key 15A is used, the combination of the tumbler pins 31, 31D and the driver pins 39, 39D is converted, and the first key 15A that enables the locking and unlocking operation of the cylinder locks 100, 200 is disabled. The tumbler pins 31, 31D and the driver pins 39, 39D are used for an operation for changing to a use state, and are used for an unlocking operation of the cylinder locks 100, 200 after the change. .

  The reset key 15D, 15E used for the cylinder lock according to claim 7 is the reset key used for the cylinder lock according to any one of claims 1, 2, 3, 4, wherein the second key When the pin combination of the tumbler pins 31, 31D and the driver pins 39, 39D is converted by using 15B, the second key 15B is disabled and the first key 15A can be used again. It is used for the operation which converts into the pin combination.

  A master key 15C used for the cylinder lock according to claim 8 is a master key used for the cylinder locks 100 and 200 according to claim 4, and is used for an operation of locking and unlocking the cylinder locks 100 and 200. It is characterized by that.

  According to the first key 15A, the second key 15B, the reset keys 15D and 15E, and the master key 15C used for the cylinder locks 100 and 200, the first key 15A, the second key 15B, and the master key are used. With the key 15C, it becomes possible to perform the locking / unlocking operation on the cylinder locks 100, 200. In particular, with the second key 15B, the cylinder locks 100, 200 when the first key 15A is in use are used. On the other hand, the pin combination of the tumbler pin 31 and the driver pin 39 is converted to disable the use of the first key 15A, the locking / unlocking operation using the second key 15B is possible, and the reset keys 15D and 15E are used. Thus, the use state of the second key 15B can be changed again to the use state of the first key 15A. Used for the operation of the lock.

  According to the cylinder lock of the first aspect of the present invention, since the pin combination is converted to disable the second key and the reset key for enabling the first key is additionally provided, After the first key becomes unusable due to the use of the second key, the reset key is used to change the second key from the usable state to the usable state of the first key. The pin combination will be converted. As a result, power supply or the like is unnecessary, and conversion from the first key to the second key is possible. Even after conversion to the second key, conversion to the first key is possible again. An available cylinder lock can be obtained. For this reason, for example, when a resident changes in a rental housing, etc., the joint key used by the previous resident is made unusable. It is possible to provide a new key and vice versa.

  According to the cylinder lock of the second aspect, the intermediate pin disposed at the rear portion of the switching tumbler pin is moved to another outer cylinder side pin accommodation hole accommodated in the stepped driver pin by being pulled out by a predetermined length, and the intermediate pin The boundary with the switching tumbler pin is aligned with the shear line, and after a predetermined angle of rotation, the intermediate pin is moved to the inner cylinder side pin accommodation hole in which the tumbler pin is accommodated by being pushed for a predetermined length, so that the intermediate pin and the stepped driver pin And a reset key that matches the boundary to the shear line, so that when the second key is used, the first key becomes unusable and then the reset key is used to When the key is in use, the intermediate pin located in the other inner cylinder side pin accommodating hole accommodating the switching tumbler pin is transferred to the other outer cylinder side pin accommodating hole accommodating the stepped driver pin. Dan moved, after the inner cylinder is rotated by a predetermined angle with the reset key in this state, the reset key by pushing a predetermined length, it is possible to move the middle pin to the contained inner cylinder side pin receiving hole of the tumbler pins. In other words, the intermediate pin is rearranged to the first arrangement position that is the pin combination position where the first key can be used. As a result, power supply or the like is unnecessary, and conversion from the first key to the second key is mechanically possible, and even after conversion to the second key, the first key is returned to the first key again. It is possible to obtain a cylinder lock that can be mechanically converted.

  According to the cylinder lock of claim 3, when the reset key is rotated by a predetermined angle, the intermediate pin located in the other inner cylinder side pin accommodation hole in which the switching tumbler pin is accommodated when the second key is used. Is temporarily moved to the outer cylinder side pin accommodation hole in which the driver pin is accommodated, and in this state, the reset key is pulled out by a predetermined length, so that the intermediate pin arranged at the rear portion of the switching tumbler pin is accommodated in the outer cylinder in which the driver pin is accommodated. By moving to the side pin receiving hole and rotating a predetermined angle in the opposite direction to the above predetermined angle rotation, the intermediate pin is rearranged to a first arrangement position that is a usable pin combination position of the first key. The Rukoto. As a result, power supply or the like is unnecessary, and conversion from the first key to the second key is mechanically possible, and even after conversion to the second key, the first key is returned to the first key again. It is possible to obtain a cylinder lock that can be mechanically converted.

  According to the cylinder lock of the fourth aspect, the intermediate pin is moved to the outer cylinder side pin accommodating hole in which the driver pin is accommodated so that the boundary between the intermediate pin and the tumbler pin coincides with the shear line. Because the master key is moved to the outer cylinder side pin accommodation hole where the attached driver pin is accommodated and the boundary between the intermediate pin and the switching tumbler pin matches the shear line, the intermediate pin can be used as the first key Whether it is located at the combination position or at the pin combination position where the second key can be used, the boundary between the intermediate pin and the tumbler pin, or the boundary between the intermediate pin and the switching tumbler pin Can match the shear line. Thereby, it is possible to obtain a cylinder lock which can be used with the master key regardless of the conversion state of the first key or the second key. For this reason, for example, when a resident changes in a rental housing, etc., the joint key used by the previous resident is made unusable. It is possible to provide a new key and vice versa, and the rental housing administrator can manage with the master key that can be used in either key state. It becomes possible.

  According to the first key used for the cylinder lock according to the fifth aspect, the cylinder lock can be locked / unlocked by performing a locking / unlocking operation.

  According to the second key used in the cylinder lock according to claim 6, when the cylinder lock can be locked / unlocked by performing a locking / unlocking operation, the first key is in use. The pin combination can be converted with respect to the cylinder lock, and the first key can be disabled.

  According to the reset key used for the cylinder lock according to claim 7, it is possible to change from the use state of the second key to the use state of the first key again. Operation is possible.

  According to the master key used for the cylinder lock according to the eighth aspect, the cylinder lock can be locked and unlocked regardless of the conversion state of the first key or the second key.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a cylinder lock according to the invention will be described in detail with reference to the drawings.
[First Embodiment]
1 is a perspective view of a cylinder lock according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view of the cylinder lock shown in FIG. 1, and FIG. 3 is an exploded view of the cylinder lock shown in FIG. FIG. 4 is a cross-sectional view, and FIG. 4 is an explanatory view showing a main part plan view of the first key, the second key, the master key, and the reset key, and a cross section thereof.

  As shown in FIG. 1, a reversible conversion lock 100 as a cylinder lock according to the first embodiment includes a cylindrical outer cylinder 11 and a cylindrical inner cylinder 13 that is rotatably provided therein. A key hole 17 into which a key (first key 15A, second key 15B, master key 15C, reset key 15D described later) 15 is inserted is opened in the front end surface 13a.

  The key 15 is provided with an insertion portion 21 to be inserted into the key hole 17 on one side of the knob portion 19 to be picked with fingers, and a plurality of concave key grooves (dimples) 23 are formed on the outer surface of the insertion portion 21. Has been. As shown in FIG. 4, the first key 15A, the second key 15B, the master key 15C, and the reset key 15D used in the reversible conversion lock 100 according to the present embodiment are at the same position (AA cross section, B- The depth shape of the predetermined dimple 23 formed in the B cross section, the CC cross section, and the DD cross section is different.

  That is, as shown in FIG. 4A, in the first key 15A, the dimples 23A1 and 23A2 are formed at predetermined positions in the AA cross section, the dimple 23A1 is shallow, and the dimple 23A2 is deep.

  As shown in FIG. 4B, in the second key 15B, dimples 23B1, 23B2, and 23B3 are formed at predetermined positions on the BB cross section, the dimples 23B1, 23B2 are shallow, and the dimples 23B3 are formed on the side edges. Is done.

  As shown in FIG. 4C, in the master key 15C, dimples 23C1 and 23C2 are formed at predetermined positions on the CC cross section, and the dimples 23C1 and 23C2 are shallow.

  As shown in FIG. 4D, the reset key 15D has dimples 23D1, 23D2, and 23D3 formed at predetermined positions in the DD cross section. The dimple 23D1 is formed by a long hole extending across the EE cross section, and is formed shallow. The dimple 23D2 is formed by a long hole reaching the position of the EE cross section, and is formed deep as a dimple 23D2a in the DD cross section and shallow as a dimple 23D2b in the EE cross section. That is, the dimple bottom surface is formed as an inclined surface. Further, the dimple 23D3 is formed on the side edge of the DD cross section.

  Here, the depth of each dimple of each of the keys 15A, 15B, 15C, and 15D is formed so as to correspond to the length of the intermediate pin 35 described later, and the bottom of the deep dimple is from the bottom of the shallow dimple. The difference in the depth distance is the length of the intermediate pin 35. The length of the long hole in the reset key 15D is half the length of the tumbler pitch L, which is the distance between the tumbler pins arranged along the longitudinal direction of the key, that is, in the axial direction of the key hole 17 described later. (See FIGS. 11 (a) and 11 (c)).

  As shown in FIG. 2, the inner cylinder 13 in which the key hole 17 is formed and the outer cylinder 11 that is externally inserted into the inner cylinder 13 are provided with a plurality of pin accommodating holes. Each pin accommodation hole is provided with an outer cylinder side pin accommodation hole 25 in the outer cylinder 11 and an inner cylinder side pin accommodation hole 27 in the inner cylinder 13. Each pin accommodation hole accommodates a plurality of tumbler pins 31A to 31E for allowing the tip pins 29A to 29E to enter the dimples 23 of the key 15 inserted into the key hole 17. FIG. 2 shows a set of tumbler pins 31A to 31E arranged in a cross section perpendicular to the keyhole axis, but the reversible conversion lock 100 further includes a plurality of sets of tumbler pins at different positions in the keyhole axis. It is arranged.

  Each of the tumbler pins 31A to 31E has a protruding position and a protruding length with respect to the key hole 17 corresponding to the depth and position of the corresponding dimple 23. In the present embodiment, among the plurality of tumbler pins 31 </ b> A to 31 </ b> E, for example, the intermediate pin 35 is movably disposed at the rear portion of one tumbler pin 31 </ b> D.

  As shown in FIG. 3, the outer peripheral opening of the outer cylinder side pin accommodation hole 25 is closed by a lid 37. A driver pin 39 is accommodated in the outer cylinder side pin accommodation hole 25. A spring 41 is sandwiched between the lid 37 and the driver pin 39, and the spring 41 biases the tumbler pins 31 </ b> A to 31 </ b> E through the driver pin 39 in a direction to project into the key hole 17. The shear lines 53 (see FIG. 2) are aligned by combinations of the lengths of the tumbler pins 31A to 31E and the driver pins 39. The shear line 53 is formed at the boundary between the outer periphery of the inner cylinder 13 and the inner periphery of the outer cylinder 11. By arranging the boundary between the tumbler pin and the driver pin in the shear line 53, the inner cylinder 13 can be rotated. On the other hand, when the tumbler pin or the driver pin crosses the shear line 53, the rotation of the inner cylinder 13 is prevented. Numerous key differences are realized by a plurality of sets of tumbler pins and combinations of lengths of these tumbler pins and driver pins.

  The outer cylinder 11 is formed with a stepped outer cylinder side pin accommodation hole 25F as another outer cylinder side pin accommodation hole, and the outer cylinder side pin accommodation hole 25F accommodates a stepped driver pin 39F. The tip of the stepped driver pin 39F is brought into contact with the shear line 53 by bringing the convex portion 56 into contact with the step portion 55 of the outer cylinder side pin accommodating hole 25F. That is, the tip does not protrude from the shear line 53. This stepped driver pin 39F can be retracted radially outward against the urging force of the spring 41.

  The inner cylinder 13 is formed with an inner cylinder side pin accommodation hole 27F as another inner cylinder side pin accommodation hole, and the inner cylinder side pin accommodation hole 27F accommodates the switching tumbler pin 31F. In the switching tumbler pin 31F, the thickness of the head 57 is set smaller than the depth of the inner cylinder side pin accommodation hole 27F. Therefore, the switching tumbler pin 31F can move further inward in the radial direction from the state in which the head portion 57 is in contact with the stepped driver pin 39F (state in FIG. 2).

  Further, as described above, the length of the intermediate pin 35 is set by the depth of the key dimple. The intermediate pin 35 includes an inner cylinder side pin accommodation hole 27D, an outer cylinder side pin accommodation hole 25D, an inner cylinder side pin accommodation hole 27F, and an outer cylinder side pin accommodation hole 25F, a driver pin 39D, a tumbler pin 31D, and a stepped driver pin 39F. Alternatively, each of the switching tumbler pins 31F can be selectively accommodated by moving in the axial direction.

Next, the operation of the reversible conversion tablet 100 configured as described above will be described.
FIG. 5 is a cross-sectional view with the first key inserted, and FIG. 6 is a cross-sectional view with the first key rotated clockwise.
The reversible conversion lock 100 is configured to be locked and unlocked by rotating the inner cylinder 13 by 90 ° with respect to the outer cylinder 11. In the present embodiment, the pin combination is converted within a 45 ° rotation range which is a substantially intermediate position of the rotation angle.

  As shown in FIGS. 2 and 5, the reversible conversion tablet 100 is in a state of being used with the first key 15A. In this state, the intermediate pin 35 becomes the first arrangement position st1 located between the driver pin 39D and the tumbler pin 31D.

  In this state, first, as shown in FIG. 5, when the first key 15A is inserted into the key hole 17 of the reversible conversion lock 100, the tip pins 29A to 29E of the tumbler pins 31A to 31E are inserted into the dimples 23, respectively. As a result, the boundary between the rear ends of the tumbler pins 31 </ b> A to 31 </ b> E and the driver pin 39 coincides with the shear line 53 that is the boundary between the inner cylinder 13 and the outer cylinder 11.

  The intermediate pin 35 is positioned in contact with the tumbler pin 31D at the first arrangement position st1, and the rear surface of the intermediate pin 35 that is the rear end of the tumbler pin 31D, that is, the boundary between the intermediate pin 35 and the driver pin 39D is the shear line 53. Matches.

Thus, the first key 15A causes the boundary between the intermediate pin 35 and the driver pin 39D arranged at the rear part of the tumbler pin 31D to coincide with the shear line 53.
Further, the boundary between the switching tumbler pin 31F and the stepped driver pin 39F also coincides with the shear line 53.
As a result, when the first key 15A is rotated (rotated clockwise), the inner cylinder 13 is moved in a state where the respective tumbler pins 31A to 31E are accommodated in the inner cylinder side pin accommodating holes 27 as shown in FIG. It can be rotated (locking / unlocking operation is possible). In FIG. 6, the first key 15A is rotated about 45 °.
Then, the first key 15A is rotated within a rotation angle range of 90 degrees up to a horizontal posture, and as a result, locking / unlocking is possible.

7 is a sectional view of the second key inserted, FIG. 8 is a sectional view of the second key rotated clockwise, and FIG. 9 is a state where the conversion to the second key is completed. FIG. 10 is a cross-sectional view of the second key removed.
On the other hand, when the resident changes, the first key 15A is returned to the administrator, and a new resident is determined, the administrator lends the second key 15B to the new resident. In the usable state of the first key 15A, as shown in FIG. 7, when the second key 15B is first inserted, the dimple 23B2 corresponding to the first arrangement position st1 is moved to the first key 15A. Since it is shallower than the dimple 23A2, the tumbler pin 31D pushes the intermediate pin 35 into the outer cylinder side pin accommodating hole 25D on the driver pin 39D side. That is, the second key 15B moves the intermediate pin 35 to the outer cylinder side pin accommodation hole 25D, and makes the boundary between the intermediate pin 35 and the tumbler pin 31D coincide with the shear line 53.

  After that, as shown in FIG. 8, when the second key 15B is rotated clockwise, in this embodiment, the inner cylinder side pin accommodation hole 27F is at the outer cylinder side pin accommodation hole at a rotation position of about 45 °. The intermediate pin 35, which coincides with 25D and has been pushed out into the outer cylinder side pin accommodation hole 25D, is pushed into the inner cylinder side pin accommodation hole 27F by the driver pin 39D and the spring 41. Thereby, the intermediate pin 35 is accommodated in the inner cylinder side pin accommodation hole 27F, pressing the switching tumbler pin 31F. The switching tumbler pin 31F pressed by the intermediate pin 35 causes the tip pin 29F to protrude into the key hole 17. The tip pin 29F protruding into the key hole 17 enters the dimple 23B3 of the second key 15B.

  From the state of FIG. 8, the locking / unlocking operation can be performed as it is. That is, the locking operation is performed by further rotating about 45 ° from the rotation position of about 45 °. Then, the conversion from the first key 15A to the second key B is completed at the position shown in FIG. Thereafter, as shown in FIG. 9, when the key is rotated counterclockwise and returned to the key insertion / removal position, the other inner cylinder side pin accommodation hole 27F coincides with the other outer cylinder side pin accommodation hole 25F, and the other The intermediate pin 35 accommodated in the inner cylinder side pin accommodation hole 27F comes into contact with the stepped driver pin 39F, that is, the intermediate pin 35 becomes the second arrangement position st2. Thereafter, as shown in FIG. 10, the second key 15B is removed from the key hole 17, so that the operation with the first key 15A becomes impossible. After the conversion to the second key 15B is completed, the tip pin 29F of the switching tumbler pin 31F protrudes into the key hole 17, so that the first key 15A without the dimple 23B3 cannot be used.

  In addition, from the state of FIG. 8, it is good also as the operation procedure which rotates the 2nd key 15B about 45 degrees counterclockwise, and does not need to be locking operation as mentioned above. That is, in the same manner as described above, the second key 15B is inserted (FIG. 7), rotated about 45 ° (FIG. 8), and then rotated back counterclockwise as shown in FIG. The other inner cylinder side pin accommodation hole 27F coincides with the other outer cylinder side pin accommodation hole 25F, and the intermediate pin 35 accommodated in the inner cylinder side pin accommodation hole 27F contacts the stepped driver pin 39F. Then, as shown in FIG. 10, the conversion from the first key 15A to the second key 15B is completed by removing the second key 15B. After the conversion to the second key 15B is completed, the tip pin 29F of the switching tumbler pin 31F projects into the key hole 17, so that the first key 15A without the dimple 23B3 cannot be used.

FIG. 11 is an explanatory view showing a state in which the reset key is pushed in (a), a sectional view in the same state in (b), a predetermined length drawing state in (b), and a sectional view in the same state in (d), FIG. Is a cross-sectional view of the reset key when it is pulled out and rotated counterclockwise, FIG. 13 is a cross-sectional view of the state where the reset key is pushed in, and FIG. 14 is a state where the reset key that has been reset is rotated to the vertical position. FIG.
Next, when the resident moves out, the second key 15B is returned to the manager. At this time, the pin combination of the reversible conversion lock 100 is converted from the usable state of the second key 15B to the usable state of the first key 15A again by the reset operation of the reset key 15D.

  In this reset, first, the reset key 15D is inserted into the key hole 17. As shown in FIG. 11A, the reset key 15 </ b> D is first inserted to the deepest depth of the key hole 17. Thus, as shown in FIG. 11B, the tip pin 29D of the tumbler pin 31D enters the dimple 23D2a, and the tip pin 29F of the switching tumbler pin 31F enters the dimple 23D3.

  From this state, as shown in FIG. 11C, the reset key 15D is pulled out by a distance l corresponding to a half pitch having a predetermined length (the distance between the DD cross section and the EE cross section) (arrow P). As shown in FIG. 11D, the tumbler pin 31D enters the dimple 23D2b, and the switching tumbler pin 31F is disengaged from the dimple 23D3 and moved outward in the radial direction. Thereby, the boundary between the driver pin 39D and the tumbler pin 31D coincides with the shear line 53, the intermediate pin 35 is pushed out to the other outer cylinder side pin accommodation hole 25F, and the boundary between the intermediate pin 35 and the switching tumbler pin 31F is sheared. Matching the line 53, the reset key 15D can be rotated.

  When the reset key 15D is rotated 45 ° counterclockwise from the state shown in FIG. 11D, as shown in FIG. 12, the tumbler pin is inserted into the other outer cylinder side pin accommodation hole 25F that accommodates the intermediate pin 35. The inner cylinder side pin accommodation hole 27D which accommodated 31D corresponds. In this state, when the reset key 15D is pushed again to the deepest position (see FIG. 11A), as shown in FIG. 13, the tumbler pin 31D enters the deep dimple 23D2a and moves radially inward. 35 is moved to the inner cylinder side pin accommodation hole 27D. In this state, the reset key 15D cannot be removed yet.

  Thus, the reset key 15D is pulled out by a predetermined length l to move the intermediate pin 35 disposed at the rear portion of the switching tumbler pin 31F to the other outer cylinder side pin accommodation hole 25F in which the stepped driver pin 39F is accommodated. Thus, the boundary between the intermediate pin 35 and the switching tumbler pin 31F is made to coincide with the shear line 53. Further, after a predetermined angle rotation (counterclockwise rotation of about 45 °), the intermediate pin 35 is pushed into a predetermined length l to move the intermediate pin 35 to the inner cylinder side pin accommodation hole 27D in which the tumbler pin 31D is accommodated. The boundary between the step 35 and the stepped driver pin 39F is made to coincide with the shear line 53.

  When the reset key 15D is rotated clockwise from the state shown in FIG. 13, the inner cylinder 13 is rotated while the intermediate pin 35 is accommodated in the inner cylinder side pin accommodation hole 27D, as shown in FIG. After 15D is rotated to the vertical posture, it is removed from the key hole 17, so that the same state as the pin combination shown in FIG. 5, that is, the intermediate pin 35 is positioned between the driver pin 39D and the tumbler pin 31D. When the first key 15A is inserted into the key hole 17, the shear line 53 coincides with the boundary between the intermediate pin 35 and the driver pin 39D arranged at the rear part of the tumbler pin 31D. Thus, the conversion is completed so that the first key 15A can be used again.

FIG. 15 is a cross-sectional view of a state where a master key is inserted at a pin combination position for the first key, and FIG. 16 is a cross-sectional view of a state where a master key is inserted at a pin combination position for the second key.
Further, as shown in FIG. 5, in the reversible conversion lock 100, the intermediate pin 35 is arranged in a pin combination position where the first key 15A can be used, that is, in the inner cylinder side pin accommodation hole 27D in which the tumbler pin 31D is accommodated. In the state of the first arrangement position st1, the shallow dimple 23C2 moves the tumbler pin 31D outward in the radial direction when the master key 15C is inserted into the key hole 17, as shown in FIG. As a result, the intermediate pin 35 is moved to the outer cylinder side pin accommodation hole 25D, the boundary between the intermediate pin 35 and the tumbler pin 31D coincides with the shear line 53, and rotation by the master key 15C, that is, locking / unlocking operation is possible. Become.

  Further, as shown in FIG. 10, in the reversible conversion lock 100, the intermediate pin 35 has a pin combination position where the second key 15B can be used, that is, another inner cylinder side pin accommodation hole in which the switching tumbler pin 31F is accommodated. When the master key 15C is inserted into the key hole 17, as shown in FIG. 16, when the switching tumbler pin 31F and the stepped driver pin 39F are in the second arrangement position st2, it is shallow. The dimple 23C2 moves the tumbler pin 31D radially outward, and the boundary between the tumbler pin 31D and the driver pin 39D coincides with the shear line 53. Further, the master key 15C moves the switching tumbler pin 31F radially outward by the side edge, and makes the boundary between the switching tumbler pin 31F and the intermediate pin 35 coincide with the shear line 53, and is rotated by the master key 15C as described above. That is, the locking / unlocking operation can be performed.

  Therefore, in any case, the reversible conversion lock 100 uses the master key 15C, and in any case, the shear line 53 at the boundary between the intermediate pin 35 and the tumbler pin 31D or the boundary between the intermediate pin 35 and the switching tumbler pin 31F. Can be matched.

  Therefore, according to the reversible conversion lock 100 according to the present embodiment, the reset key 15C is used, and the inserted reset key 15C is pulled out by a predetermined length, which is a half pitch 1 in the present embodiment. The intermediate pin 35 arranged at the rear part is moved to another outer cylinder side pin accommodation hole 25F in which the stepped driver pin 39F is accommodated, and the boundary between the intermediate pin 35 and the switching tumbler pin 31F is made to coincide with the shear line 53, After rotation by a predetermined angle, the intermediate pin 35 is pushed into the inner cylinder side pin accommodation hole 27D in which the tumbler pin 31D is accommodated by being pushed in by a predetermined length l, and the boundary between the intermediate pin 35 and the stepped driver pin 39F is sheared 53 After the first key 15A becomes unusable due to the use of the second key 15B. When the reset key 15D is used, the intermediate pin 35 located in the other inner cylinder side pin accommodation hole 27F in which the switching tumbler pin 31F is accommodated in the second arrangement position st2 in the use state of the second key 15B. Then, once moved to the outer cylinder side pin accommodation hole 25F in which the stepped driver pin 39F is accommodated, the inner cylinder 13 is rotated together with the reset key 15D by a predetermined angle in this state, and then the reset key 15D is pushed in for a predetermined length, thereby The pin 35 can be moved to the inner cylinder side pin accommodation hole 27D in which the tumbler pin 31D is accommodated. That is, the intermediate pin 35 is rearranged to a usable pin combination position (first arrangement position st1) of the first key 15A.

  Thereby, power supply or the like is unnecessary, and conversion from the first key 15A to the second key 15B is possible, and even after the conversion to the second key 15B, the first key 15A again. A reversible conversion tablet 100 that can be converted into can be obtained.

  Further, according to the reversible conversion tablet 100 according to the present embodiment, the intermediate pin 35 is moved to the outer cylinder side pin accommodation hole 25D in which the driver pin 39D is accommodated, and the boundary between the intermediate pin 35 and the tumbler pin 31D is sheared. 53, and the intermediate pin 35 is moved to the outer cylinder side pin accommodation hole 25F in which the stepped driver pin 39F is accommodated, so that the boundary between the intermediate pin 35 and the switching tumbler pin 31F coincides with the shear line 53. Since the intermediate pin 35 is disposed at the usable pin combination position of the first key 15A, or any of the intermediate pins 35 disposed at the usable pin combination position of the second key 15B. Even in this case, the boundary between the intermediate pin 35 and the tumbler pin 31D or the boundary between the intermediate pin 35 and the switching tumbler pin 31F is a shear line. It can be matched to 3. Thereby, the reversible conversion tablet 100 which can be used with the master key 15C can be obtained regardless of the conversion state of the first key 15A or the second key 15B.

[Second Embodiment]
Next, a second embodiment of the reversible conversion tablet according to the present invention will be described.
FIG. 17 is an explanatory view showing a plan view and a cross section of a main part of a first key, a second key, a master key and a reset key used in the second embodiment, and FIG. 18 is a second embodiment. FIG. 19 is a sectional view of the reset key used in the second embodiment, FIG. 19A is a rotation state of the reset key used in the second embodiment, FIG. (C), an explanatory view showing a cross-sectional view in the same state as (d), FIG. 20 is a cross-sectional view in a state where the reset key used in the second embodiment after the reset is rotated to the vertical position FIG. 21 is a sectional view showing a state in which the reset key used in the second embodiment after the reset is removed.
In the reversible conversion lock 200 according to the second embodiment, the reset key 15E is different from the reversible conversion lock 100 according to the above embodiment. Therefore, the reset operation is also different.

  The reversible conversion tablet 200 of the second embodiment is similar to the reversible conversion tablet 100 of the first embodiment described above, in which the cylindrical inner cylinder 13 is rotatable inside the cylindrical outer cylinder 11. A key hole 17 into which the key 15 is inserted is opened in the front end surface 13a of the inner cylinder 13 (see FIG. 1). The outer cylinder 11, the inner cylinder 13, and the tumbler pins 31A to 31E, the switching tumbler pins 31F, the driver pins 39A to 39E, the stepped driver pins 39F, and the like arranged on these are the same as in the first embodiment. Are denoted by the same reference numerals and description thereof is omitted.

  The key 15 is provided with an insertion portion 21 to be inserted into the key hole 17 on one side of the knob portion 19 to be picked with fingers, and a plurality of concave key grooves (dimples) 23 are formed on the outer surface of the insertion portion 21. Has been. As shown in FIG. 17, the first key 15A, the second key 15B, the master key 15C, and the reset key 15D used in the reversible conversion tablet 200 according to the second embodiment are arranged at the same position (cross section AA). , BB cross section, CC cross section, and HH cross section), the depth shape of the predetermined dimple 23 is different.

  That is, as shown in FIG. 17A, in the first key 15A, the dimples 23A1 and 23A2 are formed at predetermined positions in the AA cross section, the dimple 23A1 is shallow, and the dimple 23A2 is deep.

  As shown in FIG. 17B, in the second key 15B, dimples 23B1, 23B2, and 23B3 are formed at predetermined positions on the BB cross section, the dimples 23B1, 23B2 are shallow, and the dimples 23B3 are formed on the side edges. Is done.

  As shown in FIG. 17C, in the master key 15C, dimples 23C1 and 23C2 are formed at predetermined positions on the CC cross section, and the dimples 23C1 and 23C2 are shallow.

  As shown in FIG. 17D, the reset key 15E has dimples 23E1, 23E2, and 23E3 formed at predetermined positions in the HH cross section. The dimple 23E1 is formed by a long hole extending along the II cross section, and is formed shallow. The dimple 23E2 is formed by a long hole reaching the position of the II cross section, and is formed shallow. Further, the dimple 23E3 is a side edge portion 61 where no dimple is formed in the II section.

  Here, the depth of each dimple of each of the keys 15A, 15B, 15C, and 15E is formed so as to correspond to the length of the intermediate pin 35, and from the bottom of the shallow dimple to the bottom of the deep dimple. The difference in depth distance is the length of the intermediate pin 35. The length of the long hole in the reset key 15E is half the length of the tumbler pitch L, which is the distance between the tumbler pins arranged along the longitudinal direction of the key, that is, in the axial direction of the key hole 17. (See FIGS. 19A and 19C).

Next, the operation of the reversible conversion tablet 200 of the second embodiment configured as described above will be described.
In the reversible conversion tablet 200 of the second embodiment, the operations of the first key 15A, the second key 15B, and the master key 15C are the same as those of the reversible conversion lock 100 of the first embodiment described above. Since these are the same, the description of the operation by these keys 15A, 15B and 15C is omitted, and only the operation by the reset key 15E will be described.

In the reversible conversion lock 200, the pin combination is converted from the usable state of the second key 15B to the usable state of the first key 15A again by a reset operation of the reset key 15E.
First, the reset key 15E is inserted into the key hole 17 as shown in FIG. The reset key 15E is first inserted to the deepest depth of the key hole 17 as shown in FIG. As a result, the tip pin 29F of the switching tumbler pin 31F enters the dimple 23E3, and the intermediate pin 35 is accommodated in the other inner cylinder side pin accommodation hole 27F in which the switching tumbler pin 31F is accommodated.

  As shown in FIG. 19B, when the reset key 15E is rotated 45 ° clockwise from this state, the intermediate pin 35 accommodated in the other inner cylinder side pin accommodation hole 27F accommodates the driver pin 39D. Coincides with the outer cylinder side pin accommodating hole 25D. In this state, as shown in FIG. 19 (c), when the reset key 15E is pulled out by a half pitch of a predetermined length (distance between the HH cross section and the II cross section) (arrow Q). The tip pin 29F of the switching tumbler pin 31F is pressed radially outward by the side edge portion 61 of the key, and as shown in FIG. 19D, the intermediate pin 35 is accommodated in the outer cylinder side pin accommodation hole in which the driver pin 39D is accommodated. Move to 25D.

  When the reset key 15E is rotated 45 ° counterclockwise from the state shown in FIG. 19D, that is, the state in which the distance l corresponding to a half pitch is pulled, the intermediate pin 35 is removed as shown in FIG. The inner cylinder 13 rotates while remaining in the cylinder side pin accommodation hole 25D, the driver pin 39D contacts the intermediate pin 35, and the switching tumbler pin 31F contacts the stepped driver pin 39F.

  When the reset key 15E is removed from the state shown in FIG. 20, as shown in FIG. 21, the intermediate pin 35 is pressed by the driver pin 39D and moved to the inner cylinder side pin accommodation hole 27D in which the tumbler pin 31D is accommodated. Thus, the conversion is completed to the same state as the pin combination shown in FIG. 2, that is, the intermediate pin 35 is in the first arrangement position st1 and the first key 15A can be used again.

  According to the reversible conversion lock 200, when the reset key 15E inserted into the key hole 17 is rotated by a predetermined angle, the other inner cylinder side in which the switching tumbler pin 31F is accommodated when the second key 15B is used. The intermediate pin 35 positioned in the pin accommodation hole 27F (second arrangement position st2) is once moved to the outer cylinder side pin accommodation hole 25D in which the driver pin 39D is accommodated. In this state, the reset key 15E has a predetermined length. By pulling out the half pitch l, the intermediate pin 35 arranged at the rear part of the switching tumbler pin 31F is moved to the outer cylinder side pin accommodation hole 25D in which the driver pin 39D is accommodated, and is rotated at a predetermined angle in the direction opposite to the above predetermined angle rotation. Thus, the intermediate pin 35 is rearranged to a usable pin combination position (first arrangement position st1) of the first key 15A.

  As a result, power supply is not required, and conversion from the first key 15A to the second key 15B is possible. Even after conversion to the second key 15B, the first key 15A is returned to again. Thus, the reversible conversion tablet 200 that can be converted can be obtained.

Further, when the reset key 15D of the first embodiment is used,
(1) Insertion of reset key 15D (2) Extraction of predetermined length (half pitch l) (3) Counterclockwise (45 °) rotation (4) Pushing of predetermined length (half pitch l) (5) Clockwise (45 °) Rotation (6) Key removal / removal is required for a total of 6 operations, whereas when the reset key 15E according to the second embodiment is used,
(1) Insertion of reset key 15E (2) Clockwise (45 °) rotation (3) Extraction of predetermined length (half pitch l) (4) Counterclockwise (45 °) rotation (5) Total removal of key It can be completed with 5 operations and reset with fewer operations.

  In the above-described first and second embodiments, the case where the first key 15A, the second key 15B, and the master key 15C are used has been described as an example. For example, the first room key, the second room key, the master key, or the first customer key, the second customer key, the master key, and the period during which the resident is present. It may be used as a case where the construction period such as renovation is separated. In other words, the configuration of the present invention can be reversibly converted into two pin combination positions, and can be locked and unlocked with one master key at any pin combination position. .

It is a perspective view of the cylinder lock of a 1st embodiment concerning the present invention. It is sectional drawing of the axis line orthogonal direction of the cylinder lock shown in FIG. FIG. 3 is an exploded sectional view of the cylinder lock shown in FIG. 2. It is explanatory drawing showing the principal part planar view and its cross section of a 1st key, a 2nd key, a master key, and a reset key. It is sectional drawing of the state in which the 1st key was inserted. It is sectional drawing of the state in which the 1st key was rotated clockwise. It is sectional drawing of the state in which the 2nd key was inserted. It is sectional drawing of the state in which the 2nd key was rotated clockwise. It is sectional drawing of the state which conversion to the 2nd key was completed. It is sectional drawing in the state where the 2nd key was extracted. FIG. 4 is an explanatory diagram showing a state in which the reset key is pressed in (a), a cross-sectional view in the same state in (b), a predetermined length extraction state in (c), and a cross-sectional view in the same state in (d). It is sectional drawing of the state which rotated the reset key counterclockwise in the extraction state. It is sectional drawing of the state in which the reset key was pushed. It is sectional drawing of the state in which the reset key which completed reset is rotated to a vertical position. It is sectional drawing of the state in which the master key was inserted in the pin combination position for 1st keys. It is sectional drawing of the state in which the master key was inserted in the pin combination position for 2nd keys. It is explanatory drawing showing the principal part planar view and its cross section of the 1st key, 2nd key, master key, and reset key which are used for 2nd Embodiment. It is sectional drawing of the state in which the reset key used for 2nd Embodiment was inserted. The reset key rotation state used in the second embodiment is represented by (a), the sectional view in the same state is represented by (b), the pulled-out state of a predetermined length is represented by (c), and the sectional view in the same state is represented by (d). FIG. It is sectional drawing of the state in which the reset key used for 2nd Embodiment which finished reset is rotated to a vertical position. It is sectional drawing of the state from which the reset key used for 2nd Embodiment which finished resetting was extracted.

DESCRIPTION OF SYMBOLS 11 ... Outer cylinder 13 ... Inner cylinder 15A ... 1st key 15B ... 2nd key 15C ... Master key 15D, 15E ... Reset key 17 ... Key hole 25 ... Outer cylinder side pin accommodation hole 25F ... Other outer cylinder side pins Accommodating hole 27 ... Inner cylinder side pin accommodating hole 27F ... Other inner cylinder side pin accommodating hole 31 ... Tumbler pin 31F ... Switching tumbler pin 35 ... Intermediate pin 39 ... Driver pin 39F ... Stepped driver pin 53 ... Shear line 100, 200 ... Cylinder Tablet (Reversible conversion tablet)
st1 ... first arrangement position st2 ... second arrangement position

Claims (8)

An outer cylinder,
An inner cylinder that has a key hole and is rotatably installed in the outer cylinder to form a shear line between the outer periphery and the inner periphery of the outer cylinder;
A driver pin housed in the outer cylinder and a tumbler pin housed in the inner cylinder;
A first key that is inserted into the key hole and matches a boundary between the tumbler pin and the driver pin with the shear line;
When the first key is in use, it is inserted into the key hole and operated, thereby converting the pin combination of the tumbler pin and the driver pin to disable the first key, and A second key for newly combining the boundary between the tumbler pin and the driver pin to match the shear line;
The first key and the second key are configured separately from each other, and are inserted into the key hole and operated to convert the pin combination converted by the second key, thereby converting the second key. was unusable, a reset key for converting to the pin combination to enable said first key again,
A cylinder lock characterized by comprising: An outer cylinder,
An inner cylinder having a key hole and rotatably installed in the outer cylinder to form a shear line with the inner periphery of the outer cylinder;
A plurality of outer cylinder side pin accommodation holes and a plurality of inner cylinder side pin accommodation holes formed in the outer cylinder and a radial direction of the inner cylinder;
A driver pin housed in the outer cylinder side pin housing hole;
A tumbler pin housed in the inner cylinder side pin housing hole;
Stepped driver pins housed in other outer cylinder side pin housing holes;
A switching tumbler pin housed in another inner cylinder side pin housing hole;
One intermediate pin selectively accommodated in the outer cylinder side pin accommodation hole, the inner cylinder side pin accommodation hole, the other outer cylinder side pin accommodation hole, or the other inner cylinder side pin accommodation hole;
When the intermediate pin is in the first arrangement position located between the driver pin and the tumbler pin, the boundary between the intermediate pin and the driver pin inserted into the key hole and arranged at the rear portion of the tumbler pin coincides with the shear line. The first key to let
A boundary between the intermediate pin and the stepped driver pin that is inserted into the key hole and disposed at the rear of the switching tumbler pin when the intermediate pin is at a second arrangement position located between the stepped driver pin and the switching tumbler pin. A second key that matches the shear line;
Comprising
When the intermediate pin is in the first arrangement position, the second key is inserted to move the intermediate pin to the outer cylinder side pin accommodating hole, so that the boundary between the intermediate pin and the tumbler pin is the shear. The intermediate pin is moved to the other inner cylinder side pin receiving hole by rotating the second key by a predetermined angle to match the line, and the intermediate pin is placed between the stepped driver pin and the switching tumbler pin. Let it be accommodated and converted into the second placement position,
When the intermediate pin is in the second arrangement position, the intermediate pin arranged at the rear part of the switching tumbler pin is inserted into the key hole and pulled out by a predetermined length, so that the other external pin accommodated in the stepped driver pin is accommodated. The intermediate pin is accommodated in the tumbler pin by being moved to the cylinder side pin accommodating hole so that the boundary between the intermediate pin and the switching tumbler pin coincides with the shear line, and is rotated by a predetermined angle and then pushed in for the predetermined length. The intermediate pin is moved to the inner cylinder side pin accommodating hole so that the boundary between the intermediate pin and the stepped driver pin coincides with the shear line, and the intermediate pin is rotated by a predetermined angle in a direction opposite to the predetermined angle rotation to thereby move the intermediate pin to the first A cylinder lock characterized by comprising a reset key for setting the position. An outer cylinder,
An inner cylinder having a key hole and rotatably installed in the outer cylinder to form a shear line with the inner periphery of the outer cylinder;
A plurality of outer cylinder side pin accommodation holes and a plurality of inner cylinder side pin accommodation holes formed in the outer cylinder and a radial direction of the inner cylinder;
A driver pin housed in the outer cylinder side pin housing hole;
A tumbler pin housed in the inner cylinder side pin housing hole;
Stepped driver pins housed in other outer cylinder side pin housing holes;
A switching tumbler pin housed in another inner cylinder side pin housing hole;
One intermediate pin selectively accommodated in the outer cylinder side pin accommodation hole, the inner cylinder side pin accommodation hole, the other outer cylinder side pin accommodation hole, or the other inner cylinder side pin accommodation hole;
When the intermediate pin is in the first arrangement position located between the driver pin and the tumbler pin, the boundary between the intermediate pin and the driver pin inserted into the key hole and arranged at the rear portion of the tumbler pin coincides with the shear line. The first key to let
A boundary between the intermediate pin and the stepped driver pin that is inserted into the key hole and disposed at the rear of the switching tumbler pin when the intermediate pin is at a second arrangement position located between the stepped driver pin and the switching tumbler pin. A second key that matches the shear line;
Comprising
When the intermediate pin is in the first arrangement position, the second key is inserted to move the intermediate pin to the outer cylinder side pin accommodating hole, so that the boundary between the intermediate pin and the tumbler pin is the shear. The intermediate pin is moved to the other inner cylinder side pin receiving hole by rotating the second key by a predetermined angle to match the line, and the intermediate pin is placed between the stepped driver pin and the switching tumbler pin. Let it be accommodated and converted into the second placement position,
When the intermediate pin is in the second arrangement position, the boundary between the intermediate pin and the stepped driver pin inserted into the key hole and arranged at the rear portion of the switching tumbler pin is made coincident with the shear line and rotated after a predetermined angle. The intermediate pin is moved to the outer cylinder side pin accommodating hole in which the driver pin is accommodated by being pulled out by a predetermined length, and the boundary between the intermediate pin and the switching tumbler pin is made to coincide with the shear line, and the predetermined angle is rotated. And a reset key for bringing the intermediate pin into contact with the tumbler pin as a first arrangement position by rotating it at a predetermined angle in the opposite direction to the boundary between the intermediate pin and the tumbler pin and the shear line. And cylinder lock.   The intermediate pin is inserted into the key hole, and the intermediate pin is moved to the outer cylinder side pin accommodating hole in which the driver pin is accommodated in the usable state of the first key, so that the boundary between the intermediate pin and the tumbler pin becomes the shear line. In addition, the intermediate pin is moved to another outer cylinder side pin accommodating hole in which the stepped driver pin is accommodated in the usable state of the second key, and the boundary between the intermediate pin and the switching tumbler pin is 4. The cylinder lock according to claim 2, further comprising a master key that matches the line. A key used for the cylinder lock according to any one of claims 1, 2, 3, and 4, wherein the key is used for a locking / unlocking operation of the cylinder lock. The first key. A key used for the cylinder lock according to any one of claims 1, 2, 3, and 4, wherein a combination of the tumbler pin and the driver pin when the first key is used is converted, and the cylinder lock The first key that enables the locking / unlocking operation of the cylinder is disabled, and is used for an operation of changing to a use state by a new combination of the tumbler pin and the driver pin, and unlocking the cylinder lock after the change A second key used for a cylinder lock, which is used for a lock operation. A reset key used in the cylinder lock according to any one of claims 1, 2, 3, and 4, wherein a pin combination of the tumbler pin and the driver pin is converted by using the second key. A reset key used for a cylinder lock, which is used for an operation of making the second key unusable from an existing state and converting it to a pin combination that makes the first key usable again. The master key used for the cylinder lock according to claim 4, wherein the master key is used for an operation of locking and unlocking the cylinder lock.

Images