Cylinder lock and key combination

Abstract

The present invention relates to a combination of a cylinder lock and a key. The cylinder lock (1) has an internal structure arrangement, which includes a key profile opening (21). The key (2) has a movable element (5). The key (2) is oriented perpendicular to the longitudinal axis of the key's shaft and has a slot (16) through which the key's shaft passes. The movable element (5) is arranged to move along the slot (16).

Description

Technical Field

[0001] The present invention relates to a combination of a cylinder lock and a key. Specifically, the present invention relates to a combination of a disk tumbler cylinder lock and a key, wherein the disk tumbler cylinder lock comprises a rotation limiter.

Background Art

[0002] In a disk tumbler cylinder lock, a tumbler disk is used to solve a key-specific code and unlock the lock. Insertion of a key into the disk tumbler cylinder lock does not yet result in clearing of the code, but it is only the rotation of the key that causes the rotation of the tumbler disk according to the cut of the key (also called a combination cut) and thereby starts the clearing of the key code. When the key code is cleared and the rotation of the key continues, the disk tumbler cylinder lock is unlocked. That is, the continuous rotation of the key after clearing the key code causes the rotation of the rear end portion of the disk tumbler cylinder lock, which can be associated with a lock bar or connected to the lock bar via a locking mechanism.

[0003] The rotation limiter is a mechanism that prevents a wrong key inserted into the disk tumbler cylinder lock from rotating within the disk tumbler cylinder lock, whereby the tumbler disk does not essentially rotate from its basic position. The rotation limiter also prevents the rotation of the lock matching key unless it is fully inserted into the lock cylinder. In this case, the rotation of the key can cause the rotation of the tumbler disk from the joint basic position of the tumbler disk without unlocking the lock. The basic position refers to a state where the key can be inserted into (and also withdrawn from) the cylinder lock. In the basic position, the cylinder lock is in a locked state.

[0004] A rotation limiter allows the correct rotation of a key within a cylinder lock, provided the key is fully inserted into it. For example, Patent Publication FI108308 discloses a known rotation limiter for a disc tumbler cylinder lock. The rotation limiter comprises a body and a casing. The casing is integrated with the inner cylinder of the disc tumbler cylinder lock. The body has a key profile opening in the center through which the key can be inserted into the cylinder lock. On either side of the key profile opening are limiter mechanisms aligned in line. The limiter mechanisms consist of a spring and balls at both ends thereof.

[0005] The key matching the disc tumbler cylinder lock has a counter surface for the ball of the limiter mechanism. The counter surface is a recess on the surface of the key. When the correct key is present in the key cylinder, the key can be rotated to displace the tumbler disc to the correct position for unlocking. Thus, the inner cylinder can rotate as the rotation of the key continues. In this way, the rotation limiter improves the operational reliability of the disc tumbler cylinder lock.

[0006] The lock may also include a guide element positioned within a key channel jointly established by a key opening contained in the disc, as described in FI108308. The guide element comprises two rails and a yoke between the rails. The yoke is located at the inner end of the disc tumbler cylinder lock and thus permanently joins the rails to each other. In other words, the guide element may be a rail bent 180 degrees in the center. The guide element is conventionally supported by a rotation-limiting means such that the guide element rotates continuously as the key rotates within the lock. The guide element also functions as a casing that controls and resists the insertion and removal of the key into and out of the lock. Furthermore, the guide element itself contributes to the profile of the lock matching key.

[0007] Publication FI124224 discloses another rotation limiter for a disc tumbler cylinder lock. The rotation limiter comprises a limiting mechanism and a locking mechanism located on a line. The limiting mechanism and the locking mechanism are arranged on a line such that the limiting mechanism is on the other side of the key profile opening and the locking mechanism is on the opposite side of the key profile opening. The key used in this lock has a moving element that is on the same line as the limiting mechanism and the locking mechanism when the key is inserted into the lock.

[0008] Pin tumblers are used in pin tumbler cylinder locks. Pin tumblers provide a key-specific code and prevent the inner cylinder from rotating relative to the outer structure of the pin tumbler cylinder lock if the correct key is not used.

[0009] Conventional, known disc tumbler cylinder lock solutions and pin tumbler cylinder locks offer good protection against operation, but improving the protective solution remains desirable. [Overview of the project]

[0010] The object of the present invention is to improve the quality of the cylinder lock that resists operation and to improve the security of the cylinder lock and key combination. The object is achieved as presented in the independent claim. Various embodiments of the present invention are presented in the dependent claims.

[0011] The combination of cylinder locks 1, 40 and keys 2, 46 according to the present invention has a cylinder lock 1, 40 having an internal structure arrangement with key profile openings 21, 43. The keys 2, 46 include a movable element 5. The keys 2, 46 also have a slot 16 which is oriented laterally with respect to the longitudinal axis of the shaft of the key 2, 46, and the movable element 5 is arranged to move along the slot 16.

[0012] The internal structure arrangement includes a locking mechanism comprising a roller 26, a lock piece arrangement 25, and a return spring arrangement 27. The roller 26 has a guide surface 35 on its end 35A, which is located within key profile openings 21, 43. The roller 26 is also associated with the lock piece arrangement 25 and the return spring arrangement 27.

[0013] The return spring arrangement is configured to rotate the roller 26 toward the locked position, and in that locked position, the roller is configured to cooperate with the lock piece arrangement 25 to prevent the internal structure arrangement from rotating.

[0014] The internal structure is arranged such that when the key 2 is inserted into the cylinder lock 1, the movable element 5 moves along the slot 16, so that the movable element 5 is in contact with the guide surface 35 and in a position to rotate the roller 26 when the key is further pushed into the cylinder lock, and has at least one second guide surface 29 on at least one side of the key profile opening 21.

[0015] The internal structure arrangement further includes at least one third guide surface 36 on at least one side of the key profile opening 21 to move the movable element 5 along the slot 16 and rotate the roller 26 to the open position together with the guide surface 35 when the key is further pushed into the cylinder lock.

[0016] The guide surface 35 is further positioned to move the movable element 5 along the slot 16 when the key 2 is pulled away from the cylinder lock 1, and in response to this movement of the movable element 5, the roller 26 is positioned to rotate toward its locked position.

[0017] The present invention will now be described in more detail with reference to the attached drawings. [Brief explanation of the drawing]

[0018] [Figure 1]An example of the disc tumbler cylinder lock and key of the present invention is shown. [Figure 2] An example of the key of the present invention is shown. [Figure 3] An example of a cross-sectional view of the key in FIG. 2 is shown. [Figure 4] An example of a partial view of the shaft of the key in FIG. 2 is shown. [Figure 5] Examples of a rotation limiter and an induction element according to the present invention are shown. [Figure 6] The rotating element in FIG. 5 is shown in a cross-sectional view. [Figure 7] A cross-sectional view of the rotation limiter at a position where the roller is rotating toward the open position is shown. [Figure 8] A cross-sectional view of the rotation limiter at a position where the roller is in the open position is shown. [Figure 9] An example of the operation of the rotation limiter of the disc tumbler cylinder lock of the present invention when the key is pushed into the disc tumbler cylinder lock is shown. [Figure 10] The example in FIG. 9 is shown in a cross-sectional view. [Figure 11] An example of the key being further pushed into the disc tumbler cylinder lock is shown. [Figure 12] An example where the rotation limiter is in the open position is shown. [Figure 13] An example of a pin tumbler cylinder lock according to the present invention is shown. [Figure 14] Another view of the pin tumbler cylinder lock according to the present invention is shown. [Figure 15] An example of a side cross-sectional view of the pin tumbler cylinder lock according to the present invention is shown. [Figure 16] An example of the key according to the present invention used in the pin tumbler cylinder lock according to the present invention is shown. [Figure 17] The example in FIG. 16 is shown in a cross-sectional view.

Mode for Carrying Out the Invention

[0019] Figure 1 shows an exploded view of an example of the disc tumbler cylinder lock 1 and its key 2 according to the present invention. Figure 2 shows the key 2 in more detail. Figure 3 shows a cross-sectional view of the key. Figure 4 shows a cross-sectional view of the key shaft 18. The disc tumbler cylinder lock comprises a body portion 6 on which the other parts are assembled when the lock is constructed. The body portion has a hole 6A for the key at its front end. Together with the holes in the other parts, this hole constitutes a key channel into which a key is inserted to unlock the disc tumbler cylinder lock. As can be seen from Figure 1, other possible components such as disc tumblers 8, intermediate discs 9, and drill protection discs 14 are provided with holes for the key and key channel. The disc tumblers and intermediate discs alternate in a continuous manner within the disc tumbler lock cylinder. The intermediate discs allow each tumbler disc to rotate in such a manner that, as a result of friction, the other tumbler discs 8 do not rotate together. The intermediate discs are provided with a contact formation that is positioned against the internal structure 7 of the disc tumbler cylinder lock.

[0020] Figure 1 illustrates the internal structure of a disc tumbler cylinder lock, which is the inner cylinder 7. However, it is also possible to construct some other type of internal structure in which intermediate discs are connected to each other and to separate bottom elements. For example, WO2016075363 proposes this type of internal structure, which can be modified / applied as the internal structure of a disc tumbler cylinder lock included in the combination according to the present invention.

[0021] The internal structure / inner cylinder 7 has a rear end with mounting elements for attaching a lock bar or, for example, a torsion bar to the disc tumbler cylinder lock. The rear end and its parts are not illustrated in detail in Figure 1, as their structure is known as such.

[0022] The inner cylinder has a slot for the tumbler pin 10. The tumbler pin prevents the key 2 from rotating unless the tumbler is rotating, such that the peripheral notches 8A of the tumbler form a continuous groove with each notch of the intermediate disc 9. The continuous groove allows the tumbler pin 10 to move inward within the disc tumbler cylinder lock and the key 2 to rotate after the key-specific code has been cleared. In this disclosure, inward means toward the central region of the key channel of the disc tumbler cylinder lock, which includes the central axis B of the disc tumbler cylinder lock (Figure 5). Outward from the disc tumbler cylinder lock means the opposite direction, i.e., away from the central region of the key channel. A spring 12 ensures the operation of the tumbler pin as needed. A saddle portion 11 can be used between the spring and the tumbler pin 10.

[0023] The disc tumbler cylinder lock 1 and key 2 combination according to the present invention comprises a rotation limiting means 3 for the key, also called a rotation limiter, and an induction element 4 within the disc tumbler cylinder lock 1. The cylinder lock may also have a return pin 13 to guide the tumbler disk 8 back to its original position when the key is similarly returned to its original position. The rotation limiting means is illustrated in Figures 5 to 12.

[0024] The rotation limiting means comprises a body 3B having a key profile opening 21 and a casing 3A that at least partially encloses the body. The disc tumbler cylinder lock 1 also comprises an induction element 4, and the key 2 comprises a movable element 5. The key also has a combination cut 15 that constitutes a key code in a known manner.

[0025] As can be particularly noted in Figure 1, the internal structure of a cylinder lock can consist of different parts such as an inner cylinder 7, a disc tumbler 8, a rotation limiter 3, an induction element 4, and a tumbler pin 10.

[0026] Key 2 is oriented laterally with respect to the longitudinal axis A of its shaft 18 and has a slot 16 through which the key's shaft passes. The movable element 5 is positioned to move along the slot 16. Thus, the movable element can move laterally with respect to the longitudinal axis A.

[0027] The main body 3B comprises a locking mechanism including a roller 26, a lock piece arrangement 25, and a return spring arrangement 27. The roller 26 has a guide surface 35 on its end 35A, which is located within the key profile opening 21. The roller 26 is also associated with the lock piece arrangement 25 and the return spring arrangement 27.

[0028] The return spring arrangement is positioned to rotate the roller 26 toward the locked position of the roller. The lock piece arrangement 25 is also associated with the casing 3A. In its locked position, the roller is positioned to cooperate with the lock piece arrangement 25 and the casing 3A to prevent the body 3B from rotating. The casing has holes 3C for the key and also for the guide element 4. The casing is connected to the inner cylinder 7 in a non-rotatable manner using grooves 3D.

[0029] The main body 3B has second guide surfaces 28, 29 on the sides of the key profile opening 21 to move the movable element 5 along the slot 16 when the key 2 is inserted into the cylinder lock 1, so that the movable element 5 is in a position to contact the guide surface 35 and to rotate the roller 26 when the key is further pushed into the cylinder lock. The movable element 5 can be in any position in the slot 16 before the key is pushed into the lock cylinder. Figures 9, 10, and 6 illustrate a situation in which the key shaft is partially pushed into the lock cylinder and the portion of the shaft in which the movable element 5 settles is just entering the lock cylinder 1. The second guide surfaces 28, 29 drive the movable element to a position in which it can contact the guide surface 35 of the roller when the key is further inserted into the lock cylinder.

[0030] When the movable element 5 presses against the guide surface 35 due to the key-pressing action, the roller 26 begins to rotate against the force of the return spring arrangement 27. Figures 7 and 11 illustrate the situation when the roller 26 is partially rotated.

[0031] The main body 3B further includes a third guide surface 36 on the side of the key profile opening 21 to move the movable element 5 along the slot 16 and, together with the guide surface 35, rotate the roller 26 to the open position when the key is further pushed into the cylinder lock. The open position is illustrated in Figures 8 and 12. It is worth noting that the third guide surface 36 drives the movable element 5 along the slot 16, i.e., laterally with respect to the longitudinal axis A of the key 2's shaft.

[0032] The main body 3B further includes a fourth guide surface 28B (Figure 5) which is arranged to act together with the guide surface 35 to move the movable element 5 along the slot 16 when the key 2 is pulled away from the cylinder lock 1, and in response to this movement of the movable element 5, the roller 26 is arranged to rotate toward its locked position. A return spring arrangement fixes the rotation of the roller in the locked position.

[0033] The movable element 5 has a rounded profile at least at its end. The end provides a projection on the side of the key shaft 18, which can contact the guide surfaces 35, 28, 28B, 29, and 36 as described above. The embodiment in the drawings shows that the movable element has a rounded profile. However, the profile of the movable element can also be another, such as a rectangular profile, particularly in the central part of the movable element. As can be seen, the basic shape of the movable element 5 can be a short pin.

[0034] The slot 16 may have a groove 19 in the center of the slot, and the movable element 5 has a boss 20 aligned with the groove. In this way, the movable element remains within the slot 16 and is not released from the key 2. For ease of installation, the key 2 may include an insert body 17 fitted into the through hole. The insert body 17 includes the slot 16, which has the movable element 5 inside.

[0035] The second guide surfaces 28 and 29 are inclined with respect to the longitudinal axis B of the key profile opening 21, and when viewed from an external viewpoint of the key profile opening, they are inclined toward the end side surface 21A of the key profile opening. The third guide surface 36 is also inclined with respect to the longitudinal axis B of the key profile opening, and when viewed from an external viewpoint of the key profile opening, it is inclined toward the second end side surface 21B of the key profile opening. Therefore, when the key 2 is inserted into the lock cylinder 1, the movable element 5 is driven first toward the end side surface 21A of the key profile opening, and then toward the second end side surface 21B of the key profile opening. This means that when the key is inserted into the lock cylinder, the movable element 5 is driven to move back and forth within the slot 16.

[0036] A third guide surface 36 can be formed by the end of the rail 4A of the guide element 4, as illustrated in Figures 10 to 12. The guide element is connected to the main body 3B. Another way to provide a third guide surface is to have a separate projection on the side of the key profile opening, but in this embodiment it is also convenient that the surface of the projection toward the center of the key profile opening 21 coincides with the inner surface 4C of the rail 4A. The yoke 4B connected the rail 4A of the guide element 4 at the inner end of the disc tumbler cylinder lock.

[0037] The fourth guide surface 28B is an inclination of the key profile opening 21 with respect to the longitudinal axis, and when viewed from an external viewpoint of the key profile opening, it is inclined toward the second end side surface 21B of the key profile opening and is the side surface of the key profile opening 21 opposite to the end surface 35A of the roller 26. The fourth guide surface 28B acts together with the guide surface 35 when the key 2 is pulled out of the lock cylinder 1.

[0038] The guide surface 35 on the roller 26 has a concave shape and, as illustrated in the figure, has a rounded edge 35B that curves upward relative to the central part 35C of the guide surface 35. This type of shape is convenient for driving the movable element 5. As illustrated in the figure, the guide surface 35 is the side of the cutting 34 on the end 35A of the roller.

[0039] The roller 26 also has a recess 32 facing the lock piece arrangement 25 when the roller 26 is in the open position. In the open position, the recess 32 allows the lock piece arrangement 25 to move away from the casing portion 3A, in which case the body 3B is rotatable with the inner cylinder 7 relative to the casing portion 3A and the body portion 6. When the roller is in the locked position, the recess is not in line with the lock piece arrangement 25, in which case the lock piece arrangement 25 is partially within the recess 3E of the casing portion, the body 3B is not rotatable relative to the casing portion, and therefore the inner cylinder 7 cannot be rotated to clear the key code. The lock piece arrangement 25 may comprise at least two balls 25, but can also be manufactured in different ways. For example, the lock piece arrangement 25 may comprise a pin having a rounded end.

[0040] The roller may have a stopper 33 to restrict the roller from rotating together with the body 3B. Furthermore, the roller 26 may also have a circling groove 31 on its surface in relation to the recess 32. The circling groove provides more guidance for the lock piece arrangement 25. Furthermore, the roller may have a groove 30 for the return spring arrangement 27.

[0041] The return spring configuration 27 may comprise a torsion spring, as shown in the illustrated embodiment. Another embodiment of the return spring configuration 27 comprises a return ball and a pressure spring. Thus, many methods exist for manufacturing the return spring configuration.

[0042] In addition to the parts of the body 3B such as the roller 26, the lock piece arrangement 25, and the return spring arrangement 27, the body 3B may also include an indicator arrangement 22 that indicates the locked state of the cylinder lock. The locked state refers to a state in which the inner cylinder 7 cannot be rotated. Therefore, the key 2 may have a recess 5A for the indicator arrangement 22.

[0043] The indicator arrangement 22 also functions as a limiting configuration for restricting the rotation of the main body 3B. The indicator arrangement 22 may comprise two balls 23 and a spring 24 between the balls. One of the balls is positioned in contact with the casing 3A. The casing has a recess 3F for the ball. When the key is fully inserted into the cylinder lock, as the key is rotated, the ball on the casing side can move away from the recess 3F in the casing.

[0044] Figures 13, 14, and 15 show examples of pin tumbler cylinder locks 40 according to the present invention. Figures 16 and 17 show examples of keys used in pin tumbler cylinder locks according to the present invention. The pin tumbler cylinder lock 40 has an outer structure 41 into which an inner cylinder 42 is mounted. The inner cylinder also has a key profile opening 43 into which a key 46 is inserted when the lock is released. As shown in Figure 15, a portion of the pin tumbler 45 is inside the inner cylinder. Thus, the internal structure arrangement in embodiments of the pin tumbler cylinder lock comprises at least an inner cylinder 42 having a key profile opening 43 and a portion of the pin tumbler 45.

[0045] Key 46 has parts similar to those in the examples in Figures 2 to 4, namely, a movable element 5 and a slot 16. Furthermore, key 46, 2 may have a groove 19 and an insert body 17, and the movable element may have a boss 20.

[0046] The inner cylinder 42 (and therefore the internal structure arrangement) according to the present invention comprises a roller 26, a lock piece arrangement 25, and a return spring arrangement 27, where the lock piece arrangement 25 is also related to the outer structure 41. Thus, the roller is positioned to cooperate with the lock piece arrangement 25 and the outer structure in its locked position to prevent the inner cylinder from rotating. The bore of the outer structure 41 to which the inner cylinder is mounted has a recess 44 for the lock piece arrangement to hold the roller in its locked position. The pin tumbler cylinder also has a guide surface 35, at least one second guide surface 29, and at least one third guide surface 36.

[0047] The guide surface 35 is further positioned to move the movable element 5 along the slot 16 when the key 46 is pulled away from the pin tumbler cylinder lock 40, and in response to this movement of the movable element 5, the roller 26 is positioned to rotate toward its locked position.

[0048] Figure 17 shows an embodiment in which the slot 16 passes through the shaft of the key 46. In this case, the pin tumbler cylinder may have a fourth guide surface 28B on one side of the key profile opening, which is arranged to act together with a guide surface 35 to move the movable element 5 along the slot 16 when the key 2 is pulled away from the cylinder lock 1. In another embodiment, the slot does not pass through the shaft of the key. Thus, the movable element 5 provides a projection on one side of the shaft of the key. In either case, it is convenient that the profile of the key 46 is of a type that has a longitudinal groove into which the projection of the movable element is located. In this way, external wear on the movable element 5 is reduced. Further embodiments include a flange for holding the movable element 5 within the slot 16 through which the shaft of the key 2, 46 passes. Thus, this embodiment of the key is usable in disc tumbler cylinders and pin tumbler cylinders. As may be noted, at least some parts of the pin tumbler cylinder lock and key according to the present invention, and their functions, are similar to the corresponding parts and functions in the disc tumbler cylinder lock and key, as illustrated above.

[0049] This invention improves the security function of a disc tumbler cylinder lock / pin tumbler cylinder lock and key combination. Operation is more difficult due to the roller 26 and its rotation, and when the key is inserted into the lock cylinder, the movable element 5 in the key is driven to move back and forth in the slot 16 laterally with respect to the longitudinal axis A of the key 2. Key security is also improved because it is extremely difficult to copy an operable key.

[0050] The body 3B or inner cylinder 42 has bores and cavities for the parts described herein. As named, the key profile opening 21 conforms to the profile of keys 2, 46. While it is clear that the present invention is not limited to the examples presented herein, the present invention can be implemented in a number of different embodiments within the scope of the appended claims.

Claims

1. A combination of a cylinder lock (1, 40) and a key (2, 46), wherein the cylinder lock (1, 40) has an internal structure arrangement with key profile openings (21, 43), and the key (2, 46) has a movable element (5), and the combination of the cylinder lock (1, 40) and the key (2, 46) is, The keys (2, 46) are provided with slots (16) that are oriented laterally with respect to the longitudinal axis of the shafts of the keys (2, 46), and the movable elements (5) are arranged to move along the slots (16). The aforementioned internal structure arrangement comprises a locking mechanism having a roller (26), a lock piece arrangement (25), and a return spring arrangement (27), wherein the roller (26) has a guide surface (35) on its end (35A), the end is located within the key profile opening (21, 43), and the roller (26) is also related to the lock piece arrangement (25) and the return spring arrangement (27). The return spring arrangement is configured to rotate the roller (26) toward the locked position, and the roller, in the locked position, is configured to cooperate with the lock piece arrangement (25) to prevent the internal structure arrangement from rotating. The internal structure arrangement includes at least one second guide surface (29) on at least one side of the key profile opening (21) so that when the key (2) is inserted into the cylinder lock (1), the movable element (5) moves along the slot (16) so that the movable element (5) is in contact with the guide surface (35) and in a position to rotate the roller (26) when the key is further pushed into the cylinder lock, The aforementioned internal structure arrangement further includes at least one third guide surface (36) on at least one side of the key profile opening (21) to move the movable element (5) along the slot (16) and rotate the roller (26) to the open position together with the guide surface (35) when the key is further pushed into the cylinder lock, The combination is characterized in that the guide surface (35) is further positioned to move the movable element (5) along the slot (16) when the key (2) is pulled away from the cylinder lock (1), and the roller (26) is positioned to rotate toward its locked position in response to this movement of the movable element (5).

2. The combination according to claim 1, characterized in that the slot (16) penetrates the shaft of the key.

3. The combination according to claim 1 or 2, characterized in that the movable element (5) has a rounded profile at least at one end thereof, and the end(s) provide projections(s) to the side(s) of the key shaft (18).

4. The combination according to claim 3, characterized in that the slot (16) has a groove (19) within the slot, and the movable element (5) has a boss (20) aligned with the groove.

5. The combination according to claim 3, characterized in that the movable element (5) has a flange for holding the movable element (5) within the slot (16) through which the shaft of the key passes.

6. The combination according to any one of claims 3, 4, or 5, wherein the key (2) comprises an insert body (17) installed in a through hole, and the insert body (17) comprises a slot (16) having the movable element (5) inside.

7. The combination according to any one of claims 1 to 6, characterized in that the second guide surface (or multiple surface) (28, 29) is an inclination (or multiple surface) with respect to the longitudinal axis of the key profile opening (21), and when viewed from an external viewpoint of the key profile opening, it is inclined toward the end side surface (21A) of the key profile opening.

8. The combination according to claim 7, characterized in that the third guide surface (or multiple surface) (36) is an inclination (or multiple surface) with respect to the longitudinal axis of the key profile opening (21), and when viewed from an external viewpoint of the key profile opening, it is inclined toward the second end side surface (21B) of the key profile opening.

9. The combination according to any one of claims 1 to 8, characterized in that the roller (26) has a recess (32) facing the lock piece arrangement (25) when the roller (26) is in the open position.

10. The combination according to claim 9, characterized in that the roller has a stopper (33) for limiting the rotation of the roller.

11. The combination according to claim 9 or 10, characterized in that the roller (26) has a circumferential groove (31) on its surface in relation to the recess (32).

12. The combination according to any one of claims 1 to 11, characterized in that the guiding surface (35) is the side surface of the cutout (34) at the end (35A) of the roller.

13. The combination according to any one of claims 1 to 12, characterized in that the lock piece arrangement (25) comprises at least two balls.

14. The combination according to any one of claims 1 to 12, characterized in that the lock piece arrangement (25) comprises pins having rounded ends.

15. The combination according to any one of claims 1 to 14, characterized in that the return spring arrangement (27) includes a torsion spring.

16. The combination according to any one of claims 1 to 14, characterized in that the return spring arrangement (27) comprises a return ball and a pressure spring.

17. The cylinder lock (1) is a disc tumbler cylinder lock, and the internal structure arrangement includes a key rotation limiting means (3), the rotation limiting means comprising a body (3B) having a key profile opening (21) and a casing (3A) at least partially surrounding the body, the disc tumbler cylinder lock (1) also comprises a guide element (4), and the slot (16) of the key penetrates the shaft of the key. The main body (3B) comprises a locking mechanism including a roller (26), a lock piece arrangement (25), and a return spring arrangement (27), wherein the lock piece arrangement (25) is also related to the casing (3A), and the roller is arranged in cooperation with the lock piece arrangement (25) and the casing (3A) in its locked position to prevent the main body (3B) from rotating. The combination according to any one of claims 1 to 16, wherein the main body (3B) has the second guide surfaces (28, 29) and the third guide surface (36) on the side surface of the key profile opening (21), and the main body (3B) further comprises a fourth guide surface (28B) arranged to act together with the guide surface (35) to move the movable element (5) along the slot (16) when the key (2) is pulled away from the cylinder lock (1).

18. The combination according to claim 17, characterized in that the third guide surface (36) is formed by the end of the rail (4A) of the guide element (4), and the guide element is connected to the main body (3B).

19. The combination according to claim 17 or 18, characterized in that the fourth guide surface (28B) is inclined with respect to the longitudinal axis of the key profile opening (21), and when viewed from an external viewpoint of the key profile opening, it is inclined toward the second end side surface (21B) of the key profile opening, and is the side surface of the key profile opening (21) opposite to the end surface (35A) of the roller.

20. The combination according to any one of claims 17 to 19, characterized by comprising an indicator arrangement (22) for indicating the locked state of the cylinder lock.

21. The combination according to claim 20, characterized in that the indicator arrangement (22) comprises a spring (24) and two balls (23).

22. The combination according to any one of claims 1 to 16, wherein the cylinder lock (1) is a pin tumbler cylinder lock, the internal structure arrangement comprises an inner cylinder, the inner cylinder comprises the locking mechanism comprising the roller (26), the lock piece arrangement (25), and the return spring arrangement (27), and the inner cylinder also comprises the key profile opening.

23. The combination according to claim 22, wherein a fourth guide surface (28B) is provided on one side surface of the key profile opening, and the fourth guide surface is arranged to act together with the guide surface (35) to move the movable element (5) along the slot (16) when the key (2) is pulled away from the cylinder lock (1).

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