KR200254592Y1 - Lock - Google Patents

Abstract

The present invention can improve the fitting of the locking groove formed in the key and the locking pin installed in the lock body in a dual structure to increase the variable that enables the locking or unlocking operation of the key, and at the time of locking or unlocking the key. It relates to a lock that can increase the operating force.

The lock of the present invention includes an inner cylinder 21 having a key 40 having a plurality of locking grooves formed therein, an insertion hole 21a into which the key is inserted, an outer cylinder 22 provided outside the inner cylinder, It consists of a lock body (20) consisting of a case (23) installed on the outside of the outer cylinder, the inner cylinder and the outer cylinder of the position corresponding to the plurality of locking grooves of the key has a plurality of locking pins and spring receiving pins It is elastically installed with a pressure spring, and a plurality of locking pins are simultaneously fitted to the plurality of locking grooves of the key inserted into the insertion hole, thereby enabling locking or unlocking operations.

In addition, at least one of the lock grooves of the plurality of lock grooves formed in the key 40 is formed of a double circular lock groove 42 composed of a concentric small diameter lock groove 42a and a large diameter lock groove 42b, The lock pin at the position corresponding to the double circular lock groove 42 is composed of an inner lock pin (31) and outer lock pin (32) that is fitted to the small diameter lock groove 42a and large diameter lock groove (42b), respectively. Consisting of the locking pin (29), the spring receiving pin is composed of the inner spring receiving pin (33) and the outer spring receiving pin (34) which are installed in contact with the inner fixing pin (31) and the outer fixing pin (32), respectively. Consists of a double spring receiving pin (30), the outer side of the outer fixing pin (32) to form a projection (32a) to hold and hold the engaging jaw (21b) formed in the inner cylinder (21), the outer The locking jaw 32b is formed on the inner side of the side locking pin 32 so that the inner locking pin ( 31 is held by the protrusions 31a formed in the hook 31, and the locking jaw 34a is formed inside the outer spring receiving pin 34 to catch the protrusion 33a formed on the inner spring receiving pin 33. It is configured to be maintained.

Description

Lock {LOCK}

The present invention relates to a lock, and more particularly, to improve the fitting of the locking groove formed in the key and the locking pin installed on the lock body in a dual structure, which can increase the variable that enables the locking or unlocking operation of the key. In addition, the present invention relates to a lock that can increase the operating force when locking or unlocking a key.

In general, a lock consists of a lock body and a key for locking or unlocking the lock body, and the rotation of the key only occurs when the plurality of lock pins installed in the lock body exactly match the plurality of lock grooves formed on the key. The lock can be locked or unlocked.

1 to 3 show a lock of the prior art, in which the key 10 forms a plurality of circular locking grooves 10a on both sides and a sawtooth locking groove 10b on one blade portion.

The lock body 1 includes an inner cylinder 2 having an insertion hole 2a into which the key 10 is inserted, an outer cylinder 3 provided outside the inner cylinder 2, and an outer cylinder ( It is comprised by the case 4 installed in the outer side of 3).

In addition, in the inner cylinder 2, the locking pins 5 and 6 are movable toward the insertion hole 2a at respective positions corresponding to the circular locking groove 10a and the toothed locking groove 10b of the key 10. The outer cylinder (3) is provided with spring receiving pins (7, 8), each of which is connected to each of the clamping pins (5, 6) and one end surface thereof, and each spring receiving pin (7, A pressure spring 9 is elastically installed between 8 and the case 4 so that the clamping pins 5 and 6 and the spring receiving pins 7 and 8 are always pressed toward the insertion hole 2a.

Therefore, before the key 10 is inserted into the insertion hole 2a of the inner cylinder 2, the spring receiving pins 7 and 8 move toward the insertion hole 2a so that the side surfaces of the spring receiving pins 7 and 8 are inward. Since it is located at the interface between the cylinder (2) and the outer cylinder (3), it is not possible to rotate the inner cylinder (2: rotating part) relative to the outer cylinder (3: fixed part), thereby enabling the locking or unlocking operation of the lock. none.

In this state, the key 10 is inserted into the insertion hole 2a as shown in Figs. 2 and 3, so that the circular locking groove 10a and the sawtooth locking groove 10b of the key 10 are locked by the locking pin 5, 6), the abutment surfaces of the locking pins (5, 6) and the spring receiving pins (7, 8) are located at the boundary between the outer cylinder (3) and the inner cylinder (2), so that the outer cylinder (3) The inner cylinder 2 can be rotated, whereby the lock can be locked or unlocked.

As described above, the locking or unlocking of the lock is performed by precisely fitting both the locking pins 5 and 6 of the lock body 1 to the circular locking groove 10a and the toothed locking groove 10b of the key 10. Since the abutment surfaces of the positive pins 5 and 6 and the spring bearing pins 7 and 8 are operated only when they are located at the boundary surfaces of the outer cylinder 3 and the inner cylinder 2, when another similar key is inserted, Any one of several variables such as the installation position, the number of installations, the installation interval, the size, and the depth of the locking grooves of the locking pins 5 and 6 and the locking grooves 10a and 10b do not coincide. ) Or the side surfaces of the spring receiving pins (7, 8) is located at the interface between the outer cylinder (3) and the inner cylinder (2) to prevent the locking or unlocking operation of the lock.

The more the above variables, the more difficult it is to operate with other similar keys, thus increasing the safety of the lock. Therefore, in the related art, as shown in FIG. 1, a plurality of circular locking grooves 10a are formed on both sides of the key 10, and a sawtooth locking groove 10b is formed on one blade for locking or unlocking operation. Although the variable is increasing, not shown, it is also possible to form a sawtooth lock groove on both blades of the key 10, as shown in Figure 1 various variables such as using a magnet (10c) on the other blade Various measures are being taken for this purpose.

As one method for increasing this variable, it is most desirable to increase the number of installations of the locking grooves and the locking pins, but the limitation of the structural limitations of the lock body (1) and the key (10) is limited to increase the number of variables in this way. As a result, there is a problem that cannot further increase the consumer's desire for safety of the lock.

The present invention is to solve the above problems, the object is to improve the fitting structure of the locking pin and the locking groove within the limited structure of the lock body and the key to increase the variable for locking or unlocking operation It is to provide a lock that can increase the safety by making it possible.

In addition, the present invention is to provide a lock that increases the operating force of the key for locking and unlocking by increasing the holding force between the locking pin of the lock body and the locking groove of the key.

1 is a perspective view showing a conventional key.

Figure 2 is a cross-sectional structural view showing a conventional lock.

3 is a cross-sectional view taken along the line A-A of FIG.

4 is a perspective view showing a key of the lock according to the present invention.

Figure 5 is a cross-sectional view showing a lock of the present invention.

6 is a cross-sectional view taken along the line B-B in FIG. 5.

7 (a) to 7 (c) are enlarged views of the main portion of FIG.

<Description of the symbols for the main parts of the drawings>

20: lock body 21: the inner cylinder

21a: insertion hole 22: outer cylinder

23 case 24 pressure spring

25,26: single-pin pin 27,28: single spring pin

29: double locking pin 30: double spring receiving pin

31: inner locking pin 21b, 32b, 34a: locking jaw

31a, 32a, 33a: protrusion 32: outer locking pin

33: inner spring receiving pin 34: outer spring receiving pin

40: key 41: single circular groove

42: double circular lock groove 42a: small diameter lock groove

42b: large-diameter locking groove 43: tooth-type locking groove

The present invention for achieving the above object is an inner cylinder having a key having a plurality of locking grooves, an insertion hole into which the key is inserted, an outer cylinder installed outside of the inner cylinder, and installed outside the outer cylinder. It is composed of a lock body consisting of a case, the inner cylinder and the outer cylinder of the position corresponding to the plurality of locking grooves of the key, the plurality of locking pins and spring receiving pins are elastically installed with a pressure spring, the key inserted into the insertion hole A lock in which a plurality of lock pins are simultaneously locked to a plurality of lock pins so as to be locked or unlocked, wherein at least one lock groove among the plurality of lock grooves formed in the key includes: a concentric small diameter lock slot; Formed with a double circular lock groove consisting of a large diameter lock groove, the double circular lock groove The locking pin of the corresponding position is composed of a double locking pin consisting of an inner lock pin and an outer lock pin that is fitted to the small diameter lock groove and the large diameter lock groove, respectively, wherein the spring receiving pin and the inner lock pin and the outer lock pin, respectively It consists of a double spring receiving pin consisting of the inner spring receiving pin and the outer spring receiving pins which are connected in series with one end surface, and forming a protrusion on the outer side of the outer locking pin to maintain the locking jaw formed in the inner cylinder. A locking jaw is formed inside the outer locking pin to hold the protrusion formed on the inner locking pin, and a locking jaw is formed inside the outer spring receiving pin to hold the locking portion formed on the inner spring receiving pin. It is characterized by the lock configured as possible.

Hereinafter, a preferred embodiment of the lock according to the present invention will be described in detail with reference to FIGS. 4 to 6. The lock of the present invention is largely composed of the lock body 20 and the key 40.

The key 40 has a plurality of circular lock grooves are formed on both sides, the circular lock groove is arranged by filtering a single circular lock groove 41 and a double circular lock groove 42, double circular lock groove 42 ) Is made up of concentric small-size chain recesses 42a and large-diameter chain recesses 42b. In addition, a toothed locking groove 43 is formed in one blade portion of the key 40, and a magnet 44 may be provided in the other blade portion.

The lock body 20 includes an inner cylinder 21 having an insertion hole 21a into which the key 40 is inserted, an outer cylinder 22 provided outside the inner cylinder 21, and the outer cylinder ( It consists of a case 23 is installed on the outside of the 22).

The inner cylinder 21 and the outer cylinder 22 have a plurality of chains that fit and fit in a single circular lock groove 41, a double circular lock groove 42 and a toothed lock groove 43 of the key 40. The positive pin is installed, and the position corresponding to the single circular lock groove 41 and the toothed lock groove 43 of the key 40, as in the prior art, the single lock pin (25, 26) elastically installed by the pressure spring (24) ) And a single spring receiving pin (27, 28) is disposed, the double locking pin 29 and the double spring receiving pin 30 is disposed in a position corresponding to the double circular locking groove (42).

Since the structure and the operation of the single locking pin (25, 26), the single spring receiving pin (27, 28) and the single circular locking groove 41, the sawtooth locking groove 43 is the same as the conventional, detailed description is omitted, The double lock pin 29, the double spring receiving piece 30 and the double circular lock groove 42 will be described in detail with reference to Figs. 7 (a) to 7 (c).

The double lock pin 29 is installed in the inner cylinder 21, and the inner lock pin 31 and the large diameter lock groove 42b fitted to the small diameter lock groove 42a of the double circular lock groove 42. Consisting of the outer lock pin (32) to be fitted, the protrusion 32a is formed on the outside of the outer lock pin (32) is held on the locking step (21b) of the inner cylinder 21, the inner lock pin ( The projection 31a is also formed outside the 31 to be held by the latching jaw 32b formed on the inner side of the outer locking pin 32 so as to prevent the separation toward the insertion hole 21a.

In addition, the double spring receiving pin 30 is installed in the outer cylinder 22, the inner clamp pin 31 and the inner spring receiving pin 33 and the outer clamp pin 32 which is installed in contact with one end surface in series. It consists of an outer spring receiving pin (34) which is successively installed in contact with one end surface, the projection 33a formed on the inner spring receiving pin 33 is held by the locking step (34a) of the outer spring receiving pin (34) The pressure spring 24 is elastically installed between the case 23 and the inner spring receiving pin 33.

Therefore, as shown in Fig. 7 (a), in the state where the key 40 is not inserted into the insertion hole 21a of the inner cylinder 21, the inner and outer springs are received by the pressing force of the pressure spring 24. The pins 33 and 34 and the inner and outer crystal pins 31 and 32 are moved toward the insertion hole 21a, and the inner crystal pin 31 is more inserted than the outer crystal pin 32 by the insertion hole 21a. It will be protruded toward).

In this state, the side surfaces of the inner and outer spring receiving pins 33 and 34 are located at the interface between the inner and outer cylinders 21 and 22, so that the inner cylinder 21 (rotating body) with respect to the outer cylinder 22 is fixed. The rotation operation cannot be performed, and thus the lock or unlock operation cannot be performed.

When the key 40 is inserted in the above state, as shown in FIG. 7 (b), both sides of the key 40 push the outer crystal pin 32 and the inner crystal pin 31 in order to press the spring. As the 24 is compressed, the inner and outer spring receiving pins 33 and 34 and the inner and outer crystal pins 31 and 32 move in a direction away from the insertion hole 21a. Since the side surfaces 31 and 32 are located at the interface between the outer cylinder 22 and the inner cylinder 21, the inner cylinder 21 cannot be rotated with respect to the outer cylinder 22, thereby locking or unlocking the lock. Can't operate.

Subsequently, when the double circular locking groove 42 of the key 40 is positioned on the double locking pin 29 as shown in FIG. 7 (c), the inner locking pin 31 is pressed by the pressing force of the pressure spring 24. Is fitted into the small diameter lock groove (42a), the outer lock pin 32 is fitted to the large diameter lock groove (42b) while the inner and outer lock pins (31,32), the inner and outer spring receiving pins (33,34) ) Is moved toward the insertion hole 21a by the depth of the small-diameter lock groove 42a and the large-diameter lock groove 42b, whereby the surface and the outer lock pin that the inner lock pin 31 and the inner spring receiving pin 33 abuts. Since the surface where the 32 and the outer spring receiving pin 34 contact each other coincide with the boundary surface of the inner cylinder 21 and the outer cylinder 22, the key 40 is rotated to rotate the inner cylinder 21 to the outer cylinder 22. It can be rotated with respect to the lock, which makes it possible to lock or unlock the lock.

At this time, the depth of the small diameter chain groove (42a) and large diameter chain groove (42b) when the inner crystal pin 31 and the outer crystal pin 32 is correctly fitted, the inner crystal pin 31 and the inner spring receiving pin The surface where 33 is in contact with the outer crystal pin 32 and the outer spring receiving pin 34 is set to coincide with the boundary between the inner cylinder 21 and the outer cylinder 22, and the small-diameter lock groove 42a. And when the key 40, which is slightly different in diameter or depth of the large-diameter lock groove 42b is inserted, the surface where the inner crystal pin 31 and the inner spring receiving pin 33 abuts, and the outer crystal pin 32 and the outside The surface where the spring receiving pin 34 abuts does not coincide with the boundary surface of the inner cylinder 21 and the outer cylinder 22 so that the locking or unlocking operation cannot be performed.

As such, the lock can be locked or unlocked only when all the locking grooves formed in the key 40 and all the locking pins installed in the lock body 20 are exactly matched. A part of the circular crystal grooves formed on both sides is formed by the double circular crystal grooves 42, and the crystal pins fitted thereto are also installed as the double crystal pins 29, thereby providing the double crystal pins 29 and the double in the structurally limited space. The installation position, the number of installations, the installation interval, the size of the circular lock groove 42, and the depth of the double circular lock groove 42 can be further added as variables.

In addition, since the fitting of the double lock pins 29 and the double round lock grooves 42 are also doubled, the locking holding force thereof is increased, thereby locking or unlocking operation by the rotation of the key 40. The operating power of is increased.

As described above, according to the lock according to the present invention, the fitting structure of the locking pin and the locking groove is doubled, so that the variable for matching the locking pin and the locking groove in a limited space is further increased, whereby another key or universal The probability of opening with a key is reduced, thereby increasing the safety of the lock. In addition, since the locking holding force is increased by the double fitting structure of the locking pin and the locking groove, there is an effect of improving the operation force when locking or unlocking by rotating the key.

Claims (1)

And a lock body comprising a key having a plurality of locking grooves formed therein, an inner cylinder having an insertion hole into which the key is inserted, an outer cylinder installed outside the inner cylinder, and a case installed outside the outer cylinder. The inner cylinder and the outer cylinder at positions corresponding to the plurality of locking grooves of the key are elastically installed with a pressing spring and a spring receiving pin, and a plurality of locking pins are provided in the plurality of locking grooves of the key inserted into the insertion hole. In a lock that is fitted at the same time to enable locking or unlocking operation, At least one of the plurality of lock grooves formed in the key 40 is formed of a double circular lock groove 42 consisting of a concentric small diameter lock groove 42a and a large diameter lock groove 42b, wherein the double circle The lock pin at the position corresponding to the lock groove 42 is a double lock pin consisting of an inner lock pin 31 and an outer lock pin 32 fitted to the small diameter lock groove 42a and the large diameter lock groove 42b, respectively. Consisting of (29), the spring receiving pin is a double spring consisting of the inner spring receiving pin 33 and the outer spring receiving pin (34) installed in contact with each other in contact with the inner crystal pin (31) and the outer crystal pin (32). Consists of the receiving pin 30, the outer side of the outer pinning pin 32 to form a protrusion (32a) to hold the engaging jaw (21b) formed in the inner cylinder 21, the outer pinning pin A locking jaw (32b) is formed on the inside of the (32) to the inner lock pin (31) It is configured to hold and hold the formed protrusion (31a), and to hold the protrusion (33a) formed on the inner spring receiving pin 33 by forming a locking step (34a) inside the outer spring receiving pin (34). Lock characterized by