KR200419789Y1 - cylindrical locking device - Google Patents

Abstract

This design can be applied to the cylindrical lock corresponding to the cylindrical key, and the structure of the cylindrical lock can be simplified by changing only the structure of the pin of the cylindrical lock so that both the user key and the master key are operated. A cylindrical locking device having a master function,

A lock comprising a lock, a user key for opening the lock by a user, and a master key for opening the lock by a manager, wherein the lock has a through hole formed therein and a flange portion at the front thereof. One side of the flange portion is formed with a key inlet groove is formed, the outer cylinder is provided with a fixed groove formed on one end of the outer peripheral surface, a cylindrical projection is formed in the center of the front surface, the one side of the cylindrical projection is the key of the outer cylinder A key cylinder is formed to correspond to the inlet groove, and five inner pin receiving holes are radially penetrated right inside the outer circumferential surface, and a rotation cylinder formed at the rear center thereof with the rotation shaft extending backward is rotatable inside the outer cylinder. Is installed in the center, the through-hole is formed through which the rotating shaft of the rotary cylinder is formed Between the outer circumferential surface and the through hole, a secondary cylinder accommodating groove corresponding to the primary pin accommodating hole of the rotating cylinder is formed radially, and a fixed cylinder having a fixed groove corresponding to the fixing groove of the outer cylinder is formed at one end of the outer circumferential surface. First to fifth fixedly mounted to the inner back of the outer cylinder, each of which is stored in the primary pin receiving hole of the rotary cylinder, and has two stepped surfaces corresponding to the user key and the master key on the front surface, respectively. Primary pins having pins are installed, secondary pins having sixth to tenth pins respectively received in the secondary pin receiving grooves of the fixed cylinder and corresponding to the first to fifth pins, respectively. A plurality of springs elastically supporting the secondary pins are respectively installed in the radial secondary pin receiving grooves of the fixing cylinders, and the fixing grooves of the outer cylinder and the fixing cylinders are fixed. Made in the vault is a fitting structure for fixing the connection.

Fixed cylinder, rotating cylinder, user key, master key, lock, outer cylinder

Description

Cylindrical locking device with master function

1 is a perspective configuration diagram of a cylindrical locking device having a master function according to an embodiment of the present invention.

Figure 2 is an exploded configuration of the lock of the cylindrical locking device having a master function according to an embodiment of the present invention.

3A and 3B are exemplary views for explaining the principle of unlocking by a user key of a cylinder-type locking device having a master function according to an embodiment of the present invention.

4A and 4B are exemplary views for explaining the principle of unlocking by a master key of a cylinder-type locking device with a master function according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

1: lock 2: user key

3: master key 11: outer barrel

12: rotating cylinder 13: fixed cylinder

14: primary pin 15: secondary pin

This design relates to the field of locking devices, and more specifically, it can be applied to a cylindrical lock corresponding to a cylindrical key, and by changing only the structure of the pin of the cylindrical lock, both the user key and the master key are operated. A cylindrical locking device having a master function, which can simplify the structure of the lock.

Various kinds of locks have been developed as a means to prevent unauthorized occupancy and use of a certain space by a third party other than a legitimate user, or to prevent theft of valuable private property. The locking device includes a cylindrical or magnetic type that can be opened and closed from the outside and a key type that can be opened and closed only from the inside, and requires a key, and a mechanical number type or electronic number type that can be opened and closed from the outside but does not require a key. Many different types of locks are available on the market.

In general, the cylindrical locking device is composed of a key and a lock, and the lock is an outer cylinder, a cylinder mounted and rotated inside the outer cylinder, a pin installed in the cylinder, and the elastic support for the pin. It is made by including a spring for.

In the conventional cylindrical locking device having such a configuration, when the key is inserted into the lock and the key pushes the pin so that the connecting portion of the pin is aligned in the same position, the cylinder can be rotated and the release operation is performed. Will be done.

On the other hand, in the case of the conventional cylindrical lock device is applied to an inn or hotel with a large number of rooms, in case the guest loses the key of his room, the master key, such as the manager of the inn or hotel, can unlock the room separately. It is provided.

However, such a conventional cylindrical locking device has a problem that the manufacturing cost is increased by having a separate master key for each lock.

In order to solve such a problem, a technique for releasing a lock using a single master key without having a separate master key for each lock for a plurality of locks is disclosed. -0050057 (published June 26, 2002).

However, since the "double lock device" is a structure that is applied to the cylindrical lock corresponding to the straight key, there is a problem that is difficult to apply to the cylindrical lock corresponding to the cylindrical key.

In addition, the "double lock device" has a problem that the lock structure is complicated by not only separately installing a master cylinder corresponding to the master key but also providing a magnetic pin to the master cylinder.

An object of the present invention is to meet the above technical problem, to provide a cylindrical locking device having a master function, which can be applied to the cylindrical lock corresponding to the cylindrical key.

Another object of the present invention is to provide a cylindrical locking device with a master function, which can simplify the structure of the cylindrical lock by changing only the structure of the pin of the cylindrical lock so that both the user key and the master key are operated. There is.

As a means for achieving the above object, the constitution of the present invention is

A lock device comprising a lock, a user key for opening the lock by a user, and a master key for opening the lock by the manager,

The lock mentioned above,

The inside is formed with a through hole and a flange portion is formed on the front side, one side of the flange portion is formed with a key inlet groove is formed, the outer cylinder is provided with a fixed groove formed on one end of the outer peripheral surface,

A cylindrical protrusion is formed at the center of the front side, and a key entry groove corresponding to the key entry groove of the outer cylinder is formed at one portion of the cylindrical protrusion, and five primary pin receiving holes are radially penetrated through the rear side of the outer circumferential surface. In the center, a rotating cylinder is formed in which a rotating shaft extends rearward, and is rotatably installed in the front of the outer cylinder.

A through-hole is formed in the center through which the rotating shaft of the rotating cylinder is inserted, and a secondary pin receiving groove corresponding to the primary pin receiving hole of the rotating cylinder is radially formed between the outer circumferential surface and the through-hole. The fixed cylinder is formed fixed to the inner back of the outer cylinder is formed with a fixing groove corresponding to the fixing groove of,

Primary pins having first to fifth pins respectively accommodated in the primary pin receiving holes of the rotating cylinders and having two stepped surfaces respectively corresponding to the user key and the master key are formed on the front surface thereof.

Secondary pins are respectively accommodated in the secondary pin receiving groove of the fixed cylinder and have sixth to tenth pins corresponding to the first to fifth pins, respectively.

A plurality of springs elastically supporting the secondary pins are respectively installed inside the radial secondary pin receiving grooves of the fixed cylinders.

It consists of a structure in which a bolt for connecting the fixing groove of the outer cylinder and the fixing groove of the fixing cylinder is installed.

In the constitution of the present invention, the user key has a handle formed at the rear side, and a key entry guide piece corresponding to the key entry groove of the outer cylinder and the key entry groove of the rotary cylinder is formed at the front upper portion. In the case where the first to fifth pins respectively correspond to the upper stepped surfaces, the stepped surfaces having a height such that the rear surfaces of the first to fifth fins are positioned at the reference line l are formed radially on the front outer peripheral surface. It is preferable if it consists of.

In the constitution of the present invention, the master key has a handle formed on the rear side, and a key entry guide piece corresponding to the key entry groove of the outer cylinder and the key entry groove of the rotary cylinder is formed on the front upper portion. The stepped surface having a height such that the rear surface of the first to fifth pins are located at the reference line l, respectively, when they correspond to the lower stepped surfaces of the first to fifth fins, respectively, is formed radially on the front outer peripheral surface. Is preferred.

In the configuration of the present invention, in the case where there are a plurality of the locks, the combination of the heights of the upper stepped surfaces of the first to fifth pins of the respective locks is made different from each other, and the above-mentioned first to The combination of the heights of the lower stepped surfaces of the fifth fin is preferably equal to each other.

DETAILED DESCRIPTION Hereinafter, the most preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. . Other objects, features, and operational advantages, including the purpose, operation, and effect of this design, will become more apparent from the description of the preferred embodiment.

For reference, the embodiments disclosed herein are only presented by selecting the most preferred embodiment from among the various possible examples to help those skilled in the art to understand, the technical spirit of the present invention is not necessarily limited or limited only by this embodiment In addition, various changes, additions and changes are possible within the scope without departing from the technical spirit of the present invention, as well as other embodiments that are equally clear.

1 is a perspective configuration diagram of a cylindrical locking device having a master function according to an embodiment of the present invention, and FIG. 2 is an exploded view of the lock of the cylindrical locking device having a master function according to an embodiment of the present invention. It is a block diagram.

As shown in Figures 1 and 2, the configuration of the cylindrical locking device with a master function according to an embodiment of the present invention, the lock (1) and the lock (1) for the user to open It comprises a user key 2 and a master key 3 for the administrator to open the lock 1 described above.

As shown in Fig. 1 and Fig. 2, the detailed configuration of the lock 1 described above,

An inner cylinder is formed therein, the flange portion 111 is formed on the front surface and the outer side in which the key inlet groove 112 is formed at one side of the flange portion 111 and the fixing groove 113 is formed at one end of the outer circumferential surface ( 11) is installed,

A cylindrical protrusion 121 is formed at the center of the front surface, and a key inlet groove 122 corresponding to the key inlet groove 112 of the outer cylinder 11 is formed at one portion of the cylindrical protrusion 121, and is formed directly on the outer circumferential surface thereof. Five primary pin receiving holes 123a to 123e penetrate radially inward, and a rotation cylinder 12 in which a rotating shaft 124 extends rearward in the rear center thereof is rotatable inside the outer cylinder 11. Installed,

A through-hole 131 through which the rotating shaft 124 of the rotating cylinder 12 is inserted is formed in the center, and the primary pin receiving hole 123a of the rotating cylinder 12 is formed between the outer circumferential surface and the through-hole 131. Secondary pin receiving grooves 132a to 132e corresponding to 123e are radially formed, and a fixed cylinder having a fixing groove 133 corresponding to the fixing groove 113 of the outer cylinder 11 is formed at one end of the outer circumferential surface ( 13 is fixedly mounted on the inner back side of the outer cylinder 11,

The first to the first pin receiving holes 123a to 123e of the rotary cylinder 12 are respectively accommodated in the first step is formed with two step surfaces respectively corresponding to the user key (2) and the master key (3) Primary pins 14 having fifth pins 14a to 14e are provided,

The sixth to tenth pins 15a to 15e, which are respectively accommodated in the secondary pin accommodation grooves 132a to 132e of the fixed cylinder 13 and correspond to the first to fifth pins 14a to 14e, respectively, A secondary pin 15 having

A plurality of springs 16 for elastically supporting the secondary pin 15 are installed in the radial secondary pin receiving grooves 132a to 132e of the fixed cylinder 13, respectively.

The fixing groove 113 of the outer cylinder 11 and the fixing groove 133 of the fixing cylinder 13 is made of a structure in which a bolt 133 is installed.

The detailed configuration of the user key (2), the handle 21 is formed on the rear, the key entry groove 112 of the outer cylinder 11 and the key entry groove ( A key inlet guide piece 22 corresponding to 122 is formed, and the first to fifth pins 14a described above correspond to the upper stepped surfaces of the first to fifth pins 14a to 14e, respectively. 14e) has a structure in which the stepped surfaces 23a to 23e having a height such that the rear surface of the rear surface 14e is positioned on the reference line 1 are radially formed on the front outer peripheral surface.

The detailed configuration of the master key (3), the handle 31 is formed on the back, the key inlet 112 of the outer cylinder 11 and the key inlet of the rotary cylinder (12) in the upper front ( A key inlet guide piece 32 corresponding to 122 is formed, and the first to fifth pins 14a described above correspond to the lower stepped surfaces of the first to fifth pins 14a to 14e, respectively. 14e) has a structure in which the stepped surfaces 33a to 33e having a height such that the rear surface of the rear surface 14e are positioned at the reference line 1 are radially formed on the front outer peripheral surface.

The reference line (1) is a two-dimensional representation of the contact surface between the rotary cylinder 12 and the fixed cylinder (13), the rear surface of the first to fifth pins (14a to 14e) is located in the reference line (l). When the first to fifth pins 14a to 14e push the sixth to tenth pins 15a to 15e backward, the sixth to tenth pins 15a to 15e rotate the cylinder 12. The rotation cylinder 12 is rotatable by not being caught by the through holes 123a to 123e.

According to the above configuration, the operation of the cylinder-type locking device with a master function according to an embodiment of the present invention is as follows.

As the user grabs the handle 21 of the user key 2, the key inlet guide piece 22 formed on the front upper part of the user key 2 is the key inlet 112 and the rotary cylinder 12 of the outer cylinder 11. When it is inserted into the key inlet groove 122, the stepped surfaces 23a to 23e radially formed on the outer circumferential surface of the front of the user key 2 are located above the first to fifth pins 14a to 14e. Corresponds to the stepped surface respectively.

3A and 3B are exemplary views for explaining the principle of unlocking by a user key of a cylinder-type locking device with a master function according to an embodiment of the present invention. The stepped surfaces 23a to 23e radially formed on the front outer circumferential surface of the top surface and the upper stepped surfaces of the first to fifth fins 14a to 14e are shown in a plan view.

As shown in FIG. 3A, in the state in which the locking device is locked, the sixth to tenth pins 15a to 15e are driven by the elastic force of the springs 16a to 16e. 14e) is pushed forward and enters the front of the reference line 1 and is caught by the through holes 123a to 123e of the rotation cylinder 12, thereby making the rotation cylinder 12 impossible to rotate.

In order to release such locking state, as shown in FIG. 3B, the user inserts the user key 2 into the lock 1 to form a stepped surface radially on the front outer circumferential surface of the user key 2. When the 23a to 23e correspond to the upper stepped surfaces of the first to fifth fins 14a to 14e, respectively, the first to fifth fins 14a to 14e are the sixth to tenth fins 15a. The rear surfaces of the first to fifth pins 14a to 14e are positioned at the reference line l while pushing the back portions 15e to the rear, respectively, so that the sixth to tenth pins 15a to 15e rotate the cylinder 12. The through-holes 123a to 123e are no longer caught, so that the rotation cylinder 12 is rotatable.

The stepped surfaces 23a to 23e of the user key 2 have different heights, but in the case where they correspond to the upper stepped surfaces of the first to fifth pins 14a to 14e, respectively, The rear cylinders of the first to fifth pins 14a to 14e are pushed so as to be positioned at the reference line l such that the rotating cylinder 12 in which the first to fifth pins 14a to 14e are accommodated is rotatable.

When the rotating cylinder 12 is rotatable as described above, the rotating shaft 14 of the rotating cylinder 12 rotates, and the locking unit (not shown) connected to the rotating shaft 14 is unlocked.

On the other hand, if the user needs the help of an administrator to unlock the lock 2 due to the loss of the user key 2, or if the administrator needs to unlock the lock 2 from an administrative point of view, the administrator The key entry guide 32 formed in the upper front of the master key 3 while holding the handle 31 of the master key 3 is the key entry groove 112 and the rotary cylinder 12 of the outer cylinder 11. When it is inserted into the key inlet groove 122, the stepped surfaces 33a to 33e which are formed radially on the front outer circumferential surface of the master key 3 have the lower ends of the first to fifth pins 14a to 14e described above. Corresponds to the rear face respectively.

4A and 4B are exemplary views for explaining the principle of unlocking by a master key of a cylinder-type locking device with a master function according to an embodiment of the present invention. The stepped surfaces 33a to 33e radially formed on the outer peripheral surface of the front face) and the lower stepped surfaces of the first to fifth fins 14a to 14e are shown in a plan view.

As shown in FIG. 4A, in the state in which the locking device is locked, the sixth to tenth pins 15a to 15e are driven by the elastic force of the springs 16a to 16e. 14e) is pushed forward and enters the front of the reference line 1 and is caught by the through holes 123a to 123e of the rotation cylinder 12, thereby making the rotation cylinder 12 impossible to rotate.

In order to unlock this locking state, as shown in FIG. 4B, a manager or a user inserts the master key 3 into the lock 1 and is radially formed on the front outer circumferential surface of the master key 3. When the stepped surfaces 33a to 33e correspond to the lower stepped surfaces of the first to fifth fins 14a to 14e, respectively, the first to fifth fins 14a to 14e are the sixth to tenth fins. The rear surfaces of the first to fifth pins 14a to 14e are positioned at the reference line l while pushing the rear portions 15a to 15e to the rear, respectively, so that the sixth to tenth pins 15a to 15e rotate the cylinders ( 12 is no longer caught in the through holes 123a to 123e so that the rotation cylinder 12 is rotatable.

The stepped surfaces 33a to 33e of the master key 3 have different heights, but in the case where they correspond to the lower stepped surfaces of the first to fifth pins 14a to 14e described above, respectively, The rear cylinders of the first to fifth pins 14a to 14e are pushed so as to be positioned at the reference line l such that the rotating cylinder 12 in which the first to fifth pins 14a to 14e are accommodated is rotatable.

When the rotating cylinder 12 is rotatable as described above, the rotating shaft 14 of the rotating cylinder 12 rotates, and the locking unit (not shown) connected to the rotating shaft 14 is unlocked. Since the locking unit is sufficient to use a general structure, a detailed illustration and description of the locking unit is omitted here.

In the case where there are a plurality of locks 1, the combination of the heights of the upper stepped surfaces of the first to fifth pins 14a to 14e of the respective locks 1 is different from each other, so that the corresponding user keys 2 are provided. Although there are a plurality of locks, the combinations of the heights of the lower step surfaces of the first to fifth pins 14a to 14e of the locks 1 are the same, so that only one master key 3 corresponding thereto can be used. Suffice.

The primary pins 14 and the secondary pins 15 may use square pins having a polygonal cross section, or cylindrical pins having a circular cross section.

As described in the above embodiment, this design can be applied to the cylindrical lock corresponding to the cylindrical key, and by changing only the structure of the pin of the cylindrical lock to operate both the user key and the master key of the cylindrical lock It has an effect that can simplify the structure.

Claims (4)

A lock device comprising a lock, a user key for opening the lock by a user, and a master key for opening the lock by the manager, The lock mentioned above, The inside is formed with a through hole and a flange portion is formed on the front side, one side of the flange portion is formed with a key inlet groove is formed, the outer cylinder is provided with a fixed groove formed on one end of the outer peripheral surface, A cylindrical protrusion is formed at the center of the front side, and a key entry groove corresponding to the key entry groove of the outer cylinder is formed at one portion of the cylindrical protrusion, and five primary pin receiving holes are radially penetrated through the rear side of the outer circumferential surface. In the center, a rotating cylinder is formed in which a rotating shaft extends rearward, and is rotatably installed in the front of the outer cylinder. A through-hole is formed in the center through which the rotating shaft of the rotating cylinder is inserted, and a secondary pin receiving groove corresponding to the primary pin receiving hole of the rotating cylinder is radially formed between the outer circumferential surface and the through-hole. The fixed cylinder is formed fixed to the inner back of the outer cylinder is formed with a fixing groove corresponding to the fixing groove of, Primary pins having first to fifth pins respectively accommodated in the primary pin receiving holes of the rotating cylinders and having two stepped surfaces respectively corresponding to the user key and the master key are formed on the front surface thereof. Secondary pins are respectively accommodated in the secondary pin receiving groove of the fixed cylinder and have sixth to tenth pins corresponding to the first to fifth pins, respectively. A plurality of springs elastically supporting the secondary pins are respectively installed inside the radial secondary pin receiving grooves of the fixed cylinders. Cylindrical locking device having a master function, characterized in that the bolt is provided for connecting and fixing the fixed groove of the outer cylinder and the fixed groove of the fixed cylinder. The method of claim 1, wherein the user key, The handle is formed on the back, The key inlet guide piece corresponding to the key inlet groove of the outer cylinder and the key inlet groove of the rotary cylinder is formed in the upper part of the front side, Stepped surfaces having a height such that the rear surfaces of the first to fifth fins are positioned at the reference line l, respectively, when they correspond to the upper stepped surfaces of the first to fifth fins are radially formed on the front outer circumferential surface. Cylindrical locking device with a master function, characterized in that consisting of a structure. The method of claim 1, wherein the master key, The handle is formed on the back, In the upper part of the front is formed a key inlet guide piece corresponding to the key inlet groove of the outer cylinder and the key inlet groove of the rotary cylinder, Stepped surfaces having a height such that the rear surfaces of the first to fifth fins are positioned at the reference line l, respectively, when they correspond to the lower stepped surfaces of the first to fifth fins are radially formed on the outer peripheral surface of the front surface. Cylindrical locking device with a master function, characterized in that consisting of a structure. The method according to claim 1, wherein when there are a plurality of said locks, The combination of the heights of the upper stepped surfaces of the first to fifth pins of each lock is made different from each other, The combination of the height of the lower step surface of the said 1st-5th pin of each lock is mutually the same, The cylindrical lock device with a master function characterized by the above-mentioned.

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