TW201410953A - Cylinder lock - Google Patents

Abstract

The present invention is to realize down sizing of a cylinder lock with a key hole formed in an eccentric position of an inner cylinder. The cylinder lock (1) of the present invention is characterized by comprising an inner cylinder (11), a pair of retaining elements (19, 20), spiral springs (21, 22), guide grooves (18f, 18g, 18h, 18i) and guide projections (19a, 19b, 20a, 20b). The inner cylinder (11) includes a key hole (16) formed in an eccentric position for receiving a key (XAI) to insert therein and to be withdrawn therefrom. The pair of retaining elements (19, 20) are opened when the key (XAI) is inserted into the key hole (16) and is otherwise locked and blocking the key hole (16) when the key (XAI) is withdrawn out of the key hole (16). The spiral springs (21, 22) provide a force for biasing the retaining elements (19, 20) in the direction of locking. The guide grooves (18f, 18g, 18h, 18i) and the guide projections (19a, 19b, 20a, 20b) guide the retaining elements (19, 20) in a direction inclined with respect to and intersecting a direction connecting a center of the inner cylinder (11) and a center of the key hole (16).

Description

Cylinder lock

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a cylinder lock, and more particularly to a cylinder locker that is suitable for use in a pin tumbler type of lock for a gate of a house or a single-family house.

Among the locks that are applied to the entrance doors of residential or single-family houses, cylinder locks are the most widely used. The cylinder lock is built into a lock box mounted on the sill. Specifically, the cylinder lock includes an outer cylinder fixed to the lock case, an inner cylinder rotatably fitted to the outer cylinder, and a tumbler (also referred to as a marble) for restricting rotation of the inner cylinder. Turn the metal parts of the obstacle).

In the inner cylinder, a keyhole into which the key is inserted and separated is formed, and when a proper key is inserted, the restriction formed by the bolt is released. Then, the inner cylinder rotates together by rotating the key while remaining in the inserted state. Thereby, the dead-bolt built in the lock box is interlocked, so that the door sill is unlocked or locked.

In these cylinder locks, depending on the type of bolting, there are lever type bolting method, disk type bolting method (double lock lever), bolt pinning method, etc. By.

The cylinder lock of the bolt pinning method forms a plurality of continuous holes in the radial direction of the inner cylinder and the outer cylinder, and in each of the holes, in the order from the inner side to the outer side of the radial direction, the tumbler and the driving pin are embedded. , compressed coil spring. The tumbler and the drive pin are constantly urged toward the inner side of the radial direction by the restoring force of the coil spring. Further, when the key is inserted into the key hole, the key is pushed back toward the radially outer side by the key [refer to the second (A) to the second (C) drawing of the present invention]. .

When the key is not inserted into the keyhole, the driving pin that is urged toward the inner side of the radial direction is located at a position across the inner cylinder to the outer cylinder, and becomes an obstacle to the rotation of the inner cylinder. Also, at this time, the tumbler is housed in the inner cylinder.

Then, when the correct key suitable for the keyhole is inserted, by means of the key, the drive pin, which was once an obstacle to the rotation of the inner cylinder, is pushed back together with the tumbler toward the radially outer side. Thereby, the drive pin is housed in the outer cylinder. Moreover, the tumbler is still held in the inner cylinder. That is, the boundary between the driving pin and the tumbler is the same as the boundary between the outer tube and the inner tube. Thereby, the inner cylinder can be rotated, so that the threshold can be unlocked or locked.

On the other hand, when an error key that is not suitable for the keyhole is inserted, the tumbler and the drive pin are pushed back toward the radially outer side by the wrong amount by the key. When the amount of pushback is small, the driving pin is still positioned at a position spanning from the inner cylinder to the outer cylinder, and becomes an obstacle to the rotation of the inner cylinder. Further, when the amount of pushback is large, the tumbler is placed at a position spanning from the inner cylinder to the outer cylinder, and becomes an obstacle to the rotation of the inner cylinder. Therefore, the threshold cannot be unlocked or locked.

In the cylinder lock of the bolt-on-bolt type, a pair of shutter members that block the keyhole are provided in front of the inner cylinder (for example, refer to Patent Document 1). In the pair of shutter members, the power in the blocking direction is applied by the coil spring. The pair of shutter members are opened and opened by being opened and separated when the key is inserted into the keyhole. Further, the pair of shutter members are locked by the power of the coil springs when they are separated from each other by the power of the coil springs. Thereby, it is possible to suppress the mischievous behavior of mixing foreign matter into the keyhole or the like. Moreover, it is possible to prevent the intrusion of water or dust from the keyhole, and it is possible to reduce the occurrence of a malfunction.

Patent Document 1: Japanese Laid-Open Patent Publication No. 2011-169033

However, when the cylinder lock of the bolt pin type is easily manufactured, the groove is cut in the outer peripheral surface of the inner cylinder to form a key hole. Most of the cylinder locks of the bolt-on bolting method are manufactured in such a manner that, in this case, a keyhole is formed at an eccentric position of the inner cylinder. With this implementation, the pair of shutter members are opened and closed at the eccentric position in front of the inner cylinder.

For example, in the manner of the cylinder lock 100 shown in FIGS. 6(A) and 6(B), when the key hole 102 is formed at a position eccentric below the inner cylinder 101, the pair of shutter members 103, 104 is opened and closed to the left and right at a position below the center of the inner cylinder 101. In other words, when the pair of shutter members 103 and 104 are opened and closed in front of the inner cylinder 101, the space in front of the inner cylinder 101 cannot be effectively utilized. Therefore, for the size of the keyhole 102, there is a size of the inner cylinder 101. Increase the trend. That is, the miniaturization of the cylinder lock 100 has its limits.

On the other hand, in the manner of the cylinder lock 200 shown in FIGS. 7(A) and 7(B), when the key hole 202 is formed at the center position of the inner cylinder 201, the pair of shutter members 203 are 204 is opened and closed to the left and right at the center in front of the inner cylinder 201. In other words, the pair of shutter members 203 and 204 can be opened and closed at the entire front side of the inner cylinder, and the space in front of the inner cylinder can be effectively utilized. Therefore, the size of the keyhole can be reduced as much as possible. That is, the cylinder lock 200 can be miniaturized.

Moreover, the above-mentioned problem is not limited to the cylinder lock of the bolt pin type, but is assumed to be a cylinder lock in which a key hole is formed in the eccentric position of the inner cylinder.

The present invention has been made in view of the above problems, and an object thereof is to reduce the size of a cylinder lock having a keyhole at an eccentric position of an inner cylinder.

(1) A cylinder lock according to the present invention, comprising: an inner cylinder, a shutter member, a driving member, and a guiding mechanism; the inner cylinder having a key for inserting and removing a key at an eccentric position a hole having at least one of the shielding members and being opened when the key is inserted into the key hole, and being blocked when the key is removed from the key hole and blocking the key hole, the driving a member for imparting a lock to the above-mentioned shielding member In the direction of the power, the guiding means guides the blocking member in a direction obliquely intersecting with a direction connecting the center of the inner cylinder and the center of the keyhole.

(2) The cylinder lock according to the above aspect (1), further comprising: a cover member; the cover member is configured to cover the front portion of the inner cylinder, the shutter member, the drive member, and a member provided in the manner of the guiding mechanism, and blocking the shielding member when the shielding member is closed; and opening an opening exposing the key hole when the shielding member is opened, the front side of the cover member is The peripheral portion of the opening is chamfered.

(3) The cylinder lock according to the above aspect (2), wherein the front surface side of the shutter member is chamfered by an end edge portion for blocking the keyhole.

(4) The cylinder lock according to the above (3), wherein the peripheral portion of the opening to which the chamfer is applied is the end edge portion of the shutter member to which the chamfering is applied continuous.

(5) The cylinder lock according to any one of the above (2), wherein the cover member has the shutter member and the drive member. And an accommodating portion of the above guiding mechanism.

(6) The cylinder lock according to the above (5), further comprising: a cover member; the cover member covers the shutter member, the drive member, and the guide mechanism from a rear side.

(7) The cylinder lock according to the above (6), wherein the covering member is formed of a hard material.

The cylinder lock according to any one of the above (2) to (7), wherein the cover member is formed of a hard material.

The cylinder lock according to any one of the above (1) to (8), wherein the shutter member is formed of a hard material.

According to the cylinder lock of the above (1) to (9) of the present invention, it is possible to achieve miniaturization.

1‧‧‧ cylinder lock

11‧‧‧Inner tube

16‧‧‧ keyhole

18‧‧‧Cover components

18d‧‧‧ openings

18e‧‧‧ receiving hole

18f, 18g, 18h, 18i‧‧‧ guiding groove (guide mechanism)

19, 20‧‧‧ occlusion members

19a, 19b, 20a, 20b‧‧‧ guidance protrusions (guiding mechanism)

21, 22‧‧‧Helical spring (drive member)

23‧‧‧Cover components

XA1‧‧‧ key

Fig. 1 is an exploded perspective view of a cylinder lock relating to the present invention.

Fig. 2 is a cross-sectional view showing a state of the cylinder lock, Fig. 2(A) is a view showing a state in which the key is not inserted into the keyhole, and Fig. 2(B) is a view showing that the correct key suitable for the keyhole is inserted. The state, the second (C) diagram shows a state in which an error key that is not suitable for the keyhole is inserted.

Fig. 3(A) is a rear view of the cover member, and Fig. 3(B) is a rear view of the shutter member.

Fig. 4 is a rear view of the cover member in which the shutter member and the coil spring are assembled.

Fig. 5 is a front perspective front view for explaining a cylinder lock for opening and closing the shutter member, Fig. 5(A) is a view showing a state in which the shutter member is blocked, and Fig. 5(B) is a view showing a state in which the shutter member is opened.

Fig. 6 is a front perspective front view for explaining a shutter member for opening and closing a conventional cylinder lock, Fig. 6(A) is a view showing a state in which the shutter member is blocked, and Fig. 6(B) is a view showing a state in which the shutter member is opened.

Fig. 7 is a front perspective front view showing the shutter member of the comparison object of the cylinder lock of Fig. 6, and Fig. 7(A) is a view showing a state in which the shutter member is blocked, and Fig. 7(B) is a view showing the opening. The state of the shutter member.

Hereinafter, the cylinder lock according to the present invention will be described in detail with reference to the drawings. In the present embodiment, a cylinder lock of a bolt pin type is described as an example, but the present invention is not limited to the bolt pinning method. That is, the present invention is a cylinder lock that can also be applied to any mode.

First, the configuration of the cylinder lock 1 will be described using Figs. 1 to 4 . Fig. 1 is an exploded perspective view of the cylinder lock 1. Fig. 2 is a cross-sectional view showing the state of the cylinder lock. Figure 2(A) shows the key The keys XA1 and XA2 are not inserted into the keyhole 16. The second (B) diagram shows a state in which the correct key XA1 suitable for the keyhole 16 is inserted, and the second (C) diagram shows a state in which the error key XA2 not suitable for the keyhole 16 is inserted. The third (A) diagram is a rear view of the cover member 18. Figure 3(B) is a rear view of the shutter member. Fig. 4 is a rear elevational view of the cover member 18 in which the shutter members 19, 20 and the coil springs 21, 22 are assembled. Further, in the respective drawings, the partial configuration will be appropriately omitted, and the drawings will be simplified.

The cylinder lock 1 shown in Fig. 1 is a lock head that is built in a lock box (omitted from the figure) attached to a sill or the like, and is keyed by XA1 [refer to the second (B) Figure] is unlocked or locked.

As shown in Fig. 2, the cylinder lock 1 of the present embodiment is a bolt pinning method, and a plurality of holes 11a and 12a continuous in the radial direction of the inner cylinder 11 and the outer cylinder 12 are formed. Further, in each of the holes 11a and 12a, the tumbler 13, the drive pin 14, and the compressed coil spring 15 are fitted in the order from the inner side to the outer side in the radial direction. The bobbin 13 and the drive pin 14 are constantly urged toward the inner side in the radial direction by the restoring force of the coil spring 15. Further, the tumbler 13 and the drive pin 14 are pushed back toward the radially outer side by the keys XA1, XA2 when the keys XA1, XA2 are inserted into the key hole 16. Further, the keyhole 16 is formed by cutting the groove on the outer circumferential surface of the inner cylinder 11 (the lower side in the first drawing), and is eccentric to the orthogonal direction of the insertion and removal directions (front-rear direction) of the keys XA1 and XA2. The position on one side of the direction (downward direction) is formed in a rectangular shape.

As shown in Figure 2(A), when the keys XA1 and XA2 are not When inserted into the keyhole 16, the drive pin 14 pushed toward the inner side in the radial direction is located at a position from the inner cylinder 11 and the outer cylinder 12, and becomes an obstacle for the inner cylinder 11 to rotate. Further, at this time, the tumbler 13 is housed in the inner cylinder 11.

Further, as shown in the second figure (B), when the correct key XA1 suitable for the keyhole 16 is inserted, the drive pin 14 which becomes an obstacle to the rotation of the inner cylinder 11 is caused by the key XA1. Together with the tumbler 13, it is pushed back towards the radially outer side. Thereby, the drive pin 14 is accommodated in the outer cylinder 12. Further, the tumbler 13 is kept housed in the inner cylinder 11. That is, the boundary between the drive pin 14 and the tumbler 13 coincides with the boundary between the outer cylinder 12 and the inner cylinder 11. Thereby, the inner cylinder 11 can be rotated. By rotating the inner cylinder 11, the dead-bolt (omitted pattern) built in the lock box (omitted from the drawing) is interlocked, and the threshold (omitted pattern) can be unlocked or locked.

On the other hand, as shown in Fig. 2(C), in a state in which the error key XA2 which is not suitable for the keyhole 16 is inserted, the tumbler 13 and the drive pin 14 are caused by the key XA2. The amount of distance that is pushed back to the wrong side of the radial direction. With respect to the portion where the amount of pushing back is small, the driving pin 14 is maintained at a position from the inner cylinder 11 and the outer cylinder 12, and becomes an obstacle for the inner cylinder 11 to rotate. Further, in the portion where the amount of pushback is large, the tumbler 13 is located at a position from the inner cylinder 11 and the outer cylinder 12, and becomes an obstacle for the inner cylinder 11 to rotate. Therefore, it is impossible to unlock or lock the threshold (omitted schema).

Moreover, the inner cylinder 11, the outer cylinder 12, the tumbler 13, and the driving pin 14. The structure, the material, and the like of the coil spring 15 are well known, and are not limited to the structure, material, and the like of the embodiment, and can be appropriately selected.

Returning to Fig. 1, the main part of the present invention will be described. The cylinder lock 1 includes a shielding device 17 that blocks the keyhole 16 in addition to the inner cylinder 11, the outer cylinder 12, the tumbler 13, the drive pin 14, and the coil spring 15.

Specifically, the shielding device 17 includes a cover member 18, a pair of shielding members 19 and 20, a pair of coil springs 21 and 22, a covering member 23, and the like.

The lid member 18 is a hard material (for example, SUS316 or other stainless steel) that covers the front surface (front portion) of the inner cylinder 11 and the outer cylinder 12 from the front, and is integrally rotated with the inner cylinder 11. The cover member 18 is composed of a circular cover plate 18a, a cylindrical portion 18b, and an annular flange portion 18c. The circular cover plate 18a is adjacent to the front surface of the inner cylinder 11 and the outer cylinder 12. Oppositely, the cylindrical portion 18b extends rearward from the circumferential end of the cover plate 18a, and the annular flange portion 18c extends outward from the rear end of the cylindrical portion 18b.

The cover plate 18a is disposed in a direction (vertical direction) orthogonal to the direction in which the key XA1 is inserted and removed. In the cover plate 18a, a rectangular opening 18d is formed at a position overlapping the keyhole 16. That is, in the cover plate 18a, a rectangular opening 18d is formed at a position eccentrically on one side in a predetermined direction (downward direction). Further, the front side of the cover plate 18a is such that the peripheral portion of the opening 18d is Apply a chamfer.

When the pair of shutter members 19 and 20 are closed, the opening 18d blocks the end edge portions of the pair of shutter members 19 and 20 (the side edge portions that touch each other) [refer to Fig. 5(A)] . Further, the opening 18d exposes the keyhole 16 when the pair of shutter members 19 and 20 are opened (see Fig. 5(B)).

As shown in FIG. 3(A) and FIG. 4, a receiving hole (accommodating portion) 18e that accommodates the pair of shielding members 19 and 20 and the pair of coil springs 21 and 22 is formed on the back side of the cover plate 18a. The portion indicated by hatching in the 3 (A) diagram]. In the accommodation hole 18e, a pair of guide grooves 18f and 18g for guiding the shutter member 19 and a pair of guide grooves 18h and 18i for guiding the pair of shutter members 20 are formed. The pair of guide grooves 18f and 18g are inclined from the side of the opening 18d as viewed from the back side, with one side closer to the opening 18d being lower and one side farther than the opening 18d being upward. The direction is formed. The pair of guide grooves 18h and 18i are inclined from the side of the left side of the opening 18d as viewed from the back side, with the side closer to the opening 18d being lower and the side farther than the opening 18d being upper. The direction is formed. These guide grooves 18f, 18g, 18h, and 18i function as guide mechanisms for guiding the shutter members 19 and 20 together with the guide projections 19a, 19b, 20a, and 20b of the shutter members 19 and 20 to be described later.

As shown in FIG. 1 , FIG. 3(A) and FIG. 4 , the cover member 23 is fitted in the cylindrical portion 18 b so as to cover the pair of shutter members 19 and 20 and the pair of coil springs 21 and 22 from the rear. . Near the cylinder At the rear end of the portion 18b, a pair of locking holes 18j, 18k for determining the posture when the covering member 23 is fitted are cut. These pair of cutout portions 18j and 18k are locking pieces 23b and 23c corresponding to the covering member 23. In other words, the pair of cutout portions 18j and 18k are fitted with the pair of locking pieces 23b and 23c of the cover member 23.

The pair of shutter members 19 and 20 are hard materials (for example, SUS316, other stainless steel, etc.) for blocking the keyhole 16, and are housed in the receiving holes of the cover member 18 so as to rotate integrally with the inner cylinder 11. 18e. Specifically, the shutter member 19 is received in the housing hole 18 of the cover member 18 and is housed on the right side as viewed from the rear side. The shielding member 20 is accommodated in the housing hole 18e of the cover member 18, and is accommodated in the left side as seen from the back side.

The front side faces of the pair of shutter members 19, 20, respectively, which block the end edge portions (the side edge portions of the mutually touching sides) of the opening 18d of the cover member 18 are chamfered. Thereby, the end edge portions of the pair of shutter members 19, 20 are continuous with the edge portion of the opening 18d of the cover member 18.

When the keys XA1 and XA2 are inserted into the keyhole 16, the pair of shutter members 19 and 20 open the edge portion to which the chamfering is applied by the keys XA1 and XA2 (refer to Fig. 5(B)]. . Further, when the keys XA1 and XA2 are separated from the keyhole 16, the pair of shutter members 19 and 20 are locked by the restoring force of the pair of coil springs 21 and 22, and are in contact with each other at their end edges. The side edge portion of the side is blocked by the keyhole 16 [refer to Fig. 5(A)].

On the front side of the shutter member 19, a cover structure is formed corresponding to A pair of guide projections 19a, 19b of a pair of guide grooves 18f, 18g of the member 18. The pair of guide projections 19a and 19b are guided along the pair of guide grooves 18f and 18g, respectively. Similarly, on the front surface side of the shutter member 19, a pair of guide projections 20a, 20b corresponding to the pair of guide grooves 18h, 18i of the cover member 18 are formed. The pair of guide projections 20a, 20b are guided along the pair of guide grooves 18h, 18i, respectively.

The pair of coil springs 21 and 22 shown in Figs. 1 and 4 are accommodated in the receiving hole 18e of the lid member 18 together with the pair of shutter members 19 and 20 in a compressed state. The pair of coil springs 21, 22 are constantly pressed in the direction of the blocking shutter members 19, 20 by the restoring force. That is, the pair of coil springs 21 and 22 antagonize the pair of shutter members 19 and 20 and block the keyhole 16. Therefore, it is not easy to cause foreign matter to enter the keyhole 16 as long as there is no strong intention. Moreover, it is not easy to invade water or dust.

The cover member 23 shown in Fig. 1 is a hard material (for example, SPCC or other iron) that covers the pair of shutter members 19 and 20 and the pair of coil springs 21 and 22 from the rear, and is housed in the cover member 18 Hole 18e. The cover member 23 is composed of a circular cover plate 23a for blocking the accommodation hole 18e, and a pair of locking pieces 23b and 23c extending forward from the left and right ends of the cover plate 23a.

The cover plate 23a is disposed in parallel with the cover plate 18a of the cover member 18. A rectangular opening 23d is formed in the cover plate 23a at a position overlapping the keyhole 16. That is, in the cover plate 23a, at a position eccentric to the side in the predetermined direction (downward direction), A rectangular shaped opening 23d.

When the pair of shutter members 19 and 20 are latched, the opening 23d is blocked by the end edge portions (the side edge portions of the pair of shutter members 19 and 20 that are in contact with each other). Further, the opening 23d exposes the keyhole 16 when the pair of shutter members 19, 20 are opened.

Hereinafter, the operation of the shutter device 17 of the cylinder lock 1 will be described using the fifth (A) and fifth (B) drawings. Fig. 5 is an internal perspective front view of the cylinder lock 1 for explaining the opening and closing of the shutter members 19, 20. Fig. 5(A) is a view showing a state in which the shutter members 19 and 20 are closed. Fig. 5(B) is a view showing a state in which the shutter members 19 and 20 are opened.

When the keys XA1 and XA2 are not inserted into the keyhole 16, as shown in Fig. 5(A), the pair of shutter members 19 and 20 are individually locked by the restoring forces of the pair of coil springs 21 and 22. Block the keyhole 16.

Thereafter, when the keys XA1, XA2 are inserted into the keyhole 16, as shown in Fig. 5(B), the pair of shutter members 19, 20 are resistant to the restoring forces of the pair of coil springs 21, 22, respectively. Pushed upwards obliquely upwards. Further, the pair of shutter members 19 and 20 are guided to the guide grooves 18f, 18g, 18h, and 18i and the guide projections 19a, 19b, 20a, and 20b at the time of opening and closing (see FIG. 4).

As described above, the cylinder lock of the present embodiment includes an inner cylinder (for example, the inner cylinder 11), a shutter member (for example, a pair of shutter members 19 and 20), and a drive member (for example, a pair) a coil spring 21, 22), and a guiding mechanism (for example, guiding grooves 18f, 18g, 18h, 18i, and guiding protrusions 19a, 19b, 20a, 20b); The inner cylinder (for example, the inner cylinder 11) has an eccentric position with a key hole (for example, a keyhole 16) for inserting a key (for example, the keys XA1, XA2), the shutter member (for example, The pair of shutter members 19, 20) have at least one, and are opened when a key (for example, the keys XA1, XA2) is inserted into the key hole (for example, the key hole 16), and on the other hand, at the key (for example, When the keys XA1, XA2) are pulled away from the keyhole (for example, the keyhole 16), they are blocked and block the keyhole (for example, the keyhole 16). The driving member (for example, a pair of coil springs 21, 22) is used. The guiding member (for example, the guiding grooves 18f, 18g, 18h, 18i, and the guiding protrusions 19a, 19b, 20a, 20b) is provided with a power for the blocking member (for example, the pair of shielding members 19, 20) in the direction of the blocking. ) for guiding the shutter member (for example, the pair of shutter members 19, 20) toward the center of the inner cylinder (for example, the inner cylinder 11) and the center of the keyhole (for example, the keyhole 16) ( For example, the downward direction is guided in a direction obliquely intersecting.

Thereby, opening and closing of the shutter member can effectively utilize the space in front of the inner cylinder as compared with the conventional cylinder lock (see FIGS. 5 and 6). Therefore, it is possible to achieve miniaturization of the cylinder lock having the key hole at the eccentric position of the inner cylinder.

Moreover, it is possible to suppress the mischievous behavior of mixing foreign matter into the keyhole or the like. Moreover, it is possible to prevent the intrusion of water or dust from the keyhole, and it is possible to reduce the occurrence of a malfunction.

Further, the cylinder lock of the present embodiment is provided with a cover member (eg, cover member 18), the cover member (eg, cover member 18) is slidable from the front to cover the front portion of the inner barrel (eg, inner barrel 11), the shutter member (eg, a pair of shutter members 19, 20), a member provided in a manner of a driving member (for example, a pair of coil springs 21, 22) and a guiding mechanism (for example, guiding grooves 18f, 18g, 18h, 18i and guiding protrusions 19a, 19b, 20a, 20b), and occluding The member (for example, the pair of shutter members 19, 20) blocks the shutter member (for example, a pair of shutter members 19, 20) when locked, and on the other hand, opens the shutter member (for example, a pair of shutter members 19, 20) An opening (for example, the opening 18d) exposing the keyhole (for example, the keyhole 16) is formed, and the front side of the cover member (for example, the cover member 18) is applied from the peripheral portion of the opening (for example, the opening 18d) Chamfering. Thereby, the key can be smoothly inserted into the keyhole.

Further, in the cylinder lock of the present embodiment, the front side of the shutter member (for example, the pair of shutters 19, 20) is placed to block the edge portion of the keyhole (for example, the keyhole 16). angle. Thereby, when the key inserted in the keyhole touches the shutter member, the force in the insertion direction by the key can be smoothly converted into the force in the direction in which the shutter member is opened. Therefore, the opening of the shutter member can be smoothly performed.

Further, in the cylinder lock of the present embodiment, the peripheral portion of the chamfered opening (for example, the opening 18d) is a shutter member that is chamfered (for example, a pair of shutter members 19, 20) The end portion of the edge is continuous. Thereby, the key can be smoothly guided to the chamfered end edge portion of the shutter member.

Further, in the cylinder lock of the embodiment, the cover member (For example, the cover member 18) has: a housing shutter member (for example, a pair of shutter members 19, 20), a driving member (for example, a pair of coil springs 21, 22), and a guiding mechanism (for example, the guiding grooves 18f, 18g) 18h, 18i and a receiving portion of the guiding protrusions 19a, 19b, 20a, 20b) (for example, the receiving hole 18e). Further, the cylinder lock of the present embodiment includes a shutter member (for example, a pair of shutter members 19 and 20), a drive member (for example, a pair of coil springs 21 and 22), and a guide mechanism (for example, The guiding grooves 18f, 18g, 18h, 18i and the covering members (for example, the covering member 23) guiding the projections 19a, 19b, 20a, 20b). Thereby, the shutter member and the drive member can be integrated in the cover member. Therefore, the assembly of the cylinder lock can be made simple by integrating in advance.

Further, in the cylinder lock of the present embodiment, the covering member (for example, the covering member 23) is formed of a hard material (for example, SPCC). Further, the cover member (for example, the cover member 18) is formed of a hard material (for example, SUS316). Further, the shutter member (for example, the pair of shutter members 19, 20) is formed of a hard material (for example, SUS316). Thereby, damage to the keyhole can be prevented, and even improper unlocking can be prevented.

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit and scope of the invention.

That is, in the above embodiment, the position, size, shape, material, direction, number, and the like of each configuration can be appropriately changed. example For example, the number of the shielding members is not limited to one pair (two), and may be one or more, and one or three or more.

23b, 23c‧‧‧ card stop

21, 22‧‧‧Helical spring (drive member)

19, 20‧‧‧ occlusion members

18a‧‧‧ cover

18‧‧‧Cover components

18c‧‧‧Flange

16‧‧‧ keyhole

18d‧‧‧ openings

Claims (9)

A cylinder lock, comprising: an inner cylinder, a shielding member, a driving member, and a guiding mechanism; the inner cylinder having a keyhole for inserting and removing a key at an eccentric position, the shielding member At least one is opened when the key is inserted into the keyhole, and when the key is removed from the keyhole, the key is blocked and blocked, and the driving member is used for The shielding member is provided with a power in a direction of blocking, and the guiding mechanism guides the blocking member in a direction obliquely intersecting with a direction connecting a center of the inner cylinder and a center of the keyhole. The cylinder lock according to claim 1, further comprising: a cover member; the cover member is configured to cover the front portion of the inner cylinder, the shutter member, the drive member, and the guide mechanism from the front a member that is disposed to block the shutter member when the shutter member is locked; and, on the other hand, an opening that exposes the keyhole when the shutter member is opened, the front side of the cover member is a peripheral portion of the opening Be chamfered. The cylinder lock according to the second aspect of the invention, wherein the front side of the shielding member is used to block the keyhole. The edge portion is chamfered. The cylinder lock according to claim 3, wherein the peripheral portion of the opening to which the chamfer is applied is continuous with the end edge portion of the shutter member to which the chamfering is applied. The cylinder lock according to any one of claims 2 to 4, wherein the cover member has a housing portion that accommodates the shutter member, the driving member, and the guiding mechanism. The cylinder lock according to claim 5, further comprising: a covering member; the covering member covers the shielding member, the driving member, and the guiding mechanism from a rear side. The cylinder lock according to claim 6, wherein the covering member is formed of a hard material. The cylinder lock according to any one of claims 2 to 7, wherein the cover member is formed of a hard material. The cylinder lock according to any one of claims 1 to 8, wherein the shutter member is formed of a hard material.