KR200228579Y1 - Key Cylinder of auxiliary key - Google Patents

Abstract

The present invention relates to a key cylinder of an auxiliary key, and a conventional key cylinder is simply made of an inner cylinder and an outer cylinder, and the pins in the longitudinal direction act as a key between them, so that the tool matches the key hole (straight screwdriver or hexagon wrench). If you forcibly turn the key cylinder is broken, there was a problem that loses its function.

Thus, in the present invention, as shown in FIGS. 3 to 4, a circular hole 22 and an insertion groove 24 are formed in the outer cylinder 20 to insert the coil spring 26 and the inner cylinder 40, and the inner cylinder. A circular key insertion groove 42 is formed in the cross section 40, and the pivot plate 30 is provided at the distal end by using the key pin 46, and the center of the pivot plate 30 is the same as the cross-sectional shape of the key. By forming the fitting hole 34, the rotating plate 34 is not exposed to the outside, so that the cross-sectional shape of the key is unknown, and the outsider can make the cross-sectional shape of the fitting hole 34 through the circular hole 22. When checking and inserting the same rod as the cross-sectional shape of the fitting hole 34 and rotating it, the key pin 46, which is integral with the inner cylinder 40, is broken and only the pivoting plate 30 is rotated to maintain the function of the key cylinder. It is.

Description

Key Cylinder of Auxiliary Key

The present invention relates to a key cylinder of an auxiliary key, which will be described in more detail so that a rotating plate forming a key combination is installed at the tip of the inner cylinder so that the cross-sectional shape of the key from the outside does not appear outside. It relates to a key cylinder of a modifier key that can be rotated.

In general, the key cylinder of the auxiliary key is a part of the auxiliary key, which is a locking device that is separately installed on the door that enters and exits the room to prevent outsiders from entering the room. Are combined.

The key cylinder as described above is not limited to either the longitudinal direction or the lateral direction, the direction of action of the key pins in the built-in acts simultaneously in two directions to improve the security features, including three directions including the diagonal direction Key cylinders that are designed to work in recent years have been developed and widely used.

The key cylinder acting in the three directions as described above will be described with reference to the accompanying drawings. FIG. 1 is an exploded perspective view showing a conventional key cylinder, and FIG. 2 is a longitudinal cross-sectional view of a state in which a conventional key cylinder is combined.

As shown in FIG. 1, the conventional key cylinder is composed of an inner cylinder 2 and an outer cylinder 3 to form one cylinder body 1, and the inner cylinder 2 has a longitudinal key insertion in the center thereof. The groove 4 is formed, and the key insertion groove 4 forms the same hexagon as the cross-sectional shape of the key to be inserted, and a plurality of inner pin holes 5 are formed in the longitudinal direction on the outer circumferential surface of the inner cylinder 2 at equal intervals. At one end of the outer cylinder 3, a supporting jaw 6 for supporting one end of the inner cylinder 2 is formed.

In the outer cylinder 3, a through hole 7 into which the inner cylinder 2 is fitted in the center thereof is formed in the longitudinal direction, and a fixing groove 8 is formed in the outer circumference thereof, and the outer circumferential surface of the outer cylinder 3 has a longitudinal direction. Grooves 13 are formed, and a plurality of pinholes 11 are formed at equal intervals in the grooves 13, and a thin plate 12 for sealing the pinholes 11 is fitted into the grooves 13. have.

The inner pin hole 5 and the pin hole 11 are fitted in a state in which rod-like pins 14 are stacked, and the spring 15 is supported thereon.

In the conventional key cylinder made in this manner, as shown in FIG. 2, the inner cylinder 2 is fitted into the through hole 7 of the outer cylinder 3, and the inner cylinder 2 is attached to the supporting jaw 6 of the outer cylinder 3. It is supported to form the cylinder body (1).

At this time, the inner pin hole 5 and the pin hole 11 formed at equal intervals in the longitudinal direction in the inner cylinder 2 and the outer cylinder 3 are placed in a straight line (same vertical line) so that the rod-shaped pins 14 and the spring 15 ) Is inserted into the groove 13 so that the spring 15 is supported thereon.

One of the pins 14 is located in the inner pin hole 5 of the inner cylinder 2 and the other is located in the pin hole 11 of the outer cylinder 3, wherein the inner cylinder 2 is of the outer cylinder 3. It is rotated in the through hole 8.

That is, when the key is inserted into the key insertion groove 4 of the inner cylinder 2, the line contacting the pins 14 downward in cross section coincides with the boundary line between the inner cylinder 2 and the outer cylinder 3 contacted by the inserted key. Therefore, the inner cylinder 2 is to be rotated in the outer cylinder (3).

At this time, if the key inserted into the key insertion groove 4 is not completely inserted or if a key that is not fitted into the key insertion groove 4 is inserted, the line 14 and the inner cylinder 2 and the outer cylinder 3 which the pins 14 contact are made. The inner cylinders 2 do not rotate because the lines in contact do not coincide.

However, in the conventional cylinder body 1 as described above, the key insertion groove 4 is formed in the inner cylinder 2 in the same shape as the cross-sectional shape of the key, so that the rod having the same shape as the cross-sectional shape of the key is naturally the key insertion groove ( 4) is inserted into, the forcibly rotated rod is broken cylinder body 1 including the pins 14 while the inner cylinder (2) is rotated or the entire cylinder body (1) is rotated to function as a key cylinder There is a problem that the end of the inner cylinder (2) is not exposed to the outside and the cross section shape of the key can be immediately known.

The present invention is to install the rotary plate which is engaged by the key at the tip of the inner cylinder so that the cross-sectional shape of the key from the outside does not appear on the outside, and in some cases only the key of the rotating plate to be broken so that the rotating plate separately from the inner cylinder Its purpose is to provide a key cylinder for an auxiliary key that can only rotate.

In order to achieve the above object, a circular hole and an insertion groove having the same diameter as the outer diameter of the key are formed in the longitudinal direction from the end of the outer cylinder to insert the coil spring and the inner cylinder, and the inner cylinder forms a circular key insertion groove in the cross section. To form a key groove in the tip of the inner cylinder to insert the key, and to combine the rotating plate with a locking groove to the key to form an integral, the rotating plate forms the same fitting hole in the center of the cross-sectional shape of the key, the insertion The rotating spring is brought into close contact with the inner cylinder by means of the coiled spring, so that the cross-sectional shape of the key is not exposed to the outside. As the key is broken, only the rotating plate can be rotated to maintain the function of the key cylinder.

1 is an exploded perspective view showing a conventional key cylinder,

2 is a longitudinal sectional view of a state in which a conventional key cylinder is coupled;

3 is an exploded perspective view of a key cylinder according to the present invention,

4 is a longitudinal sectional view of a key cylinder according to the present invention.

<Code Description of Main Parts of Drawing>

20-barrel, 22-rotunda,

24-insert groove, 26-coil spring,

30-swivel plate, 32-hanging groove,

34-fitting hole, 40-inner barrel,

42-keyway, 44-keyway,

46-keypin, 48-support plate,

100-cylinder body.

Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.

Exemplary Figure 3 is an exploded perspective view of the key cylinder according to the present invention, Figure 4 is a longitudinal cross-sectional view of the key cylinder according to the present invention, the subject innovation in the cylinder body consisting of the outer cylinder and the inner cylinder, from the tip of the outer cylinder 20 A circular hole 22 and an insertion groove 24 having a diameter equal to the outer diameter of the key are formed in the longitudinal direction, and the coil spring 26, the rotation plate 30, and the inner cylinder 40 are inserted into the insertion groove 24. To form a cylinder body 100, the inner cylinder 40 is formed in the cross-section circular key insertion groove 42, the key groove 44 is formed at the tip end to insert the key pin 46, the rotating plate ( 30 is formed by forming the locking groove 32 on the outer periphery so that the key pin 46 is fitted, the same fitting hole 34 is formed in the center of the cross section of the key.

In the drawings, reference numeral 50 is an operating plate for operating the latch of the auxiliary key body not shown in the drawing, 52 is a key inserted into the cylinder body 100, and 54 is a coupling bolt for fixing the support plate 48. In the drawings, the same parts as those in the related art will be described with the same reference numerals.

As illustrated in FIGS. 3 and 4, the coil spring 26 is inserted into the insertion groove 24 of the outer cylinder 20, and the key pin 46 is rotated in the key groove 44 formed at the tip of the inner cylinder 40. When the copper plate 30 is combined and inserted into the insertion groove 24, the coil spring 26 is compressed so that the rotating plate 30 is in close contact with the tip of the inner cylinder 40 by the elastic force of the coil spring 26. It becomes one with.

In such a state, the inner pin 40 of the inner cylinder 40 and the pin hole 11 of the outer cylinder 20 are moved and adjusted so that the inner pin 40 of the inner cylinder 40 and the outer cylinder 20 is adjusted. When the pins 14 and the spring 15 are inserted in the state where 5) and the pinhole 11 coincide, and the thin plate 12 is coupled to the groove 13 of the outer cylinder 20, the spring force of the spring 15 is applied. The pins 14 are inserted into the inner pin hole 5 of the inner cylinder 40 so that the inner cylinder 40 and the outer cylinder 20 are integrally formed to form one cylinder body 100 by the coupling bolt 54. do.

The diameter of the key insertion groove 42 formed in the inner cylinder 40 is larger than the diameter of the key 52 in cross section, and the key pin 46 fitted into the key groove 44 formed at the distal end has a hardness of one. The pin 14 has a hardness smaller than or equal to the hardness.

The pivoting plate 30 which is integrally formed by the front end of the inner cylinder 40 and the key pin 46 has a fitting hole 34 having the same shape as the cross-sectional shape of the key at the center thereof.

The fitting hole 34 is merely an illustration of the shape of the fitting hole 34 as a hexagon in order to explain as an example that the cross-sectional shape of the key in the drawing as a hexagon, the cross-sectional shape of the key is a square square rectangle, etc. In the case of a polygon, the fitting hole 34 is formed similarly to the cross-sectional shape.

The rotating plate 30 having the fitting hole 34 as described above is positioned inside the insertion groove 24 of the outer cylinder 20 so that the outsider does not know the shape of the fitting hole 34 in appearance, and the outer cylinder 20 in appearance. The shape of the circular hole 22 can be mistaken for the cross-sectional shape of the key, so that the function of the key cylinder can be more secured.

In particular, the shape of the fitting hole 34 can be seen through the circular hole 22 so that the same rod as the cross-sectional shape of the fitting hole 34 into the key insertion groove 42 of the inner cylinder 40 to be forcibly rotated. If the key plate 46 that is coupled to the rotating plate 30 and the inner cylinder 40 is damaged, the rotating plate 30 is rotated. The diameter of the key insertion groove 42 is formed larger than the diameter of the fitting hole 34 of the rotating plate 30 so that only the rod inserted is idle.

That is, one key pin 46 in the lateral direction (in the drawing) which couples the rotating plate 30 and the inner cylinder 40 is installed, and the hardness of the key pin 46 is longitudinally in the longitudinal direction (in the drawing). When the external force is applied smaller than the pins 14, the rotating plate 30 is rotated and the inner cylinder 40 is not rotated while the key pin 46 in the transverse direction is broken, thereby maintaining the function of the key cylinder. .

As described above, the present invention forms a circular hole 22 and an insertion groove 24 in the outer cylinder 20 to insert the coil spring 26 and the inner cylinder 40, and inserts a circular key in the cross section into the inner cylinder 40. By forming the groove 42, the pivot plate 30 is provided at its distal end using the key pin 46, and the fitting hole 34 which is the same as the cross-sectional shape of the key is formed in the center of the pivot plate 30, The rotating plate 34 is not exposed to the outside, so that the cross-sectional shape of the key is unknown, and the outsider checks the cross-sectional shape of the fitting hole 34 through the circular hole 22, so that the cross-section of the fitting hole 34 is Insert and rotate the same rod shape, the key pin 46, which is integral with the inner cylinder 40, is broken, and only the rotation plate 30 is rotated to maintain the function of the key cylinder, thereby preventing outsiders from invading the room in advance. It can be effective.

Claims (1)

In the key cylinder of the auxiliary key consisting of an outer cylinder and an inner cylinder, a circular hole 22 having the same outer diameter as the outer diameter of the key and an insertion groove 24 having the same diameter as the inner cylinder 40 are formed in the longitudinal direction from the tip of the outer cylinder 20. And inserting the coil spring 26, the rotating plate 30 and the inner cylinder 40 into the insertion groove 24 to form a cylinder body 100, the inner cylinder 40 has a circular key insertion groove ( 42, a key groove 44 is formed at the tip portion to insert the key pin 46, and the pivoting plate 30 forms a locking groove 32 on the outer circumference thereof so that the key pin 46 is fitted therein. The key cylinder of the auxiliary key, characterized in that formed in the center of the same insertion hole (34) as the cross-sectional shape of the key, the inner cylinder 40 is located in the insertion groove 24 by the support plate (48).