KR20010003495A - Lock - Google Patents

Abstract

PURPOSE: A lock is provided to improve the reliability of the lock since it is impossible to unlock the lock by rotating a spindle if a key is not a fixed key. CONSTITUTION: A lock includes a cylinder(10) having guide holes communicated with a center hole(12), cylinder pins(20) mounted in the guide holes of the cylinder enabling to go in and out by the support of a first springs(22), a spindle(30) rotatively installed in the guide holes and having guide holes(34) communicating with a center key hole(32) to be conformed with the guide holes of the cylinder, sleeves(30) having holes(62) mounted in the guide holes of the spindle enabling to go in and out, and spindle pins(70) mounted in the holes of the spindle enabling to go in and out by the support of a second springs(78) to limit the rotation of the spindle by cooperating with the cylinder pins.

Description

Lock {LOCK}

The present invention relates to a lock that can be unlocked only by a predetermined key.

The spindle of the lock, which is widely used as a locking device such as a door, is rotatably installed, and the spindle is locked by a plurality of pins passing through the cylinder and the spindle at the same time to keep the lock locked. Then, the pins are operated in the release position defined by the key to allow the rotation of the spindle, and the lock can be opened by the rotation of the spindle.

However, a lock that is configured such that the spindle is limited to rotation by pins only has the problem of being easily opened. That is, the pins can be operated by forcibly inserting a wire into the keyhole of the spindle, and the pins are operated by a key having a shape similar to a predetermined key, thereby easily unlocking the lock. As a result, the reliability of the lock is greatly reduced, and the use of the auxiliary device that maintains the locked state of the lock is increasing. In addition, the poorness of the lock may be a factor of theft accident.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned general problems, and an object of the present invention is to provide a lock capable of releasing a locked state with only a predetermined key.

A feature of the present invention for achieving the above object is a cylinder having guide holes communicating with the central hole; Cylinder pins mounted on the guide holes of the cylinder so as to be projected on and off by the support of the first springs; A spindle rotatably installed in the hole of the cylinder and having guide holes communicating with the central key hole so as to coincide with the guide holes of the cylinder; Sleeves having holes mounted on the guide holes of the spindle so as to be retractable; In the lock of the sleeve is a lock comprising spindle pins retractably mounted by the support of the second springs to cooperate with the cylinder pins to limit the rotation of the spindle.

Another feature of the invention is a cylinder having guide holes communicating with a central hole, the sliding groove is formed along the longitudinal direction on the inner circumference of the hole; Cylinder pins mounted on the guide holes of the cylinder so as to be projected on and off by the support of the first springs; Slits are rotatably installed in the holes of the cylinder, have guide holes communicating with the central keyhole to coincide with the guide holes of the cylinder, and slits are formed on the outer circumference so as to have the same circumferential centerline as these guide holes, A spindle having a first through hole and a second through hole communicating with the key hole above and below the inner surface thereof; Sleeves releasably mounted in the guide holes of the spindle, the sleeves having pin holes in communication with the first through holes of the spindle and the holes corresponding to each other; Spindle pins releasably mounted by support of second springs to cooperate with cylinder pins to limit rotation of the spindle in the holes of the sleeves, the spindle pins having pin grooves corresponding to each other; A first pin which is retractably mounted to the slits of the spindle by the support of the third springs and which can enter the pin groove of the spindle pins through the first through hole of the spindle and the pin hole of the sleeves, and the second through of the spindle Stoppers having second pins capable of entering the keyhole through the holes; A slider having a sliding protrusion fitted into the sliding groove of the cylinder to slide the stoppers into the slits to allow rotation of the spindle; Mountains and valleys are formed continuously on the upper surface to position the spindle pins at a predetermined release height, and support jaws are formed on the middle and top of the mountains to support the sleeves at the predetermined release height. It is in a lock made of a key with pinholes on the sides to allow it.

1 is a perspective view showing a lock according to the present invention,

2 is a cross-sectional view showing a lock according to the present invention,

3 is a cross-sectional view showing the assembly state of the sleeve and the spindle pin in the lock according to the invention,

4 is a front view showing a key in a lock according to the present invention,

5 and 6 are cross-sectional view showing an open state of the lock according to the present invention,

7 and 8 are cross-sectional views showing a locked state of the lock according to the present invention.

♣ Explanation of symbols for the main parts of the drawing ♣

10: cylinder 12: hole

14: sliding groove 20: cylinder pin

30: spindle 36: slit

38, 40: first and second through holes 60: sleeve

68: pin hole 70: spindle pin

76: pin groove 90: slider

94: sliding protrusion 100: key

106: support jaw 108: pin hole

Hereinafter, preferred embodiments of the lock according to the present invention will be described in detail with reference to the accompanying drawings.

1 to 8 are diagrams for explaining the lock according to the present invention.

First, referring to FIG. 1 and FIG. 2, the lock of the present invention has a cylinder 10. The cylinder 10 has a sliding groove 14 formed in the inner circumference of the hole 12 along the length direction, and the outer circumference of the cylinder 10 has a plurality of guide holes 16 transverse to the central hole 12. It is formed at equal intervals along the axial direction, and a female screw 18 is formed at the inlet side of the guide holes 16. Cylinder pins 20 of different lengths are mounted in the guide holes 16 of the cylinder 10 such that they are protruding toward the hole 12 by the support of the first springs 22, and the female threads of the guide holes 16 are different. Screws 24 are fastened to 18 to prevent the cylinder pins 20 and the first springs 22 from being separated.

In addition, the spindle 30 is rotatably installed in the hole 12 of the cylinder 10, and the rear end of the spindle 30 is installed to protrude out of the cylinder 10 through the hole 12. At the outer circumference of the spindle 30, guide holes 34 are formed to cross the central key hole 32 so as to coincide with the guide holes 16 of the cylinder 10, and to one side of the guide holes 34. Slits 36 transverse to the keyhole 32 are formed along the circumferential direction so as to have the same centerline as the guide holes 34. Then, the first through hole 38 and the second through hole 40 which cross the key hole 32 laterally are formed above and below the inner surface of the slits 36. A male screw 42, a coupling hole 44 and a first coupling groove 46 are formed at the rear end of the outer circumference of the spindle 30, respectively, and a second coupling groove 48 is formed at the rear end thereof.

On the other hand, the safety pin 50 is coupled to the coupling hole 44 of the spindle 30, the safety pin 50 is a tool other than a key, for example, a screwdriver or the like through the key hole 32 of the spindle 30 It prevents the pins and the like from reaching the latch (not shown) to prevent the release of the latch. The snap ring 52 is coupled to the first coupling groove 46 of the spindle 30 so that the spindle 30 is not separated from the hole 12 of the cylinder 10. The locking lever 54 for operating the latch is coupled to the second coupling groove 48 of the spindle 30, and the cap nut 56 for preventing the removal of the locking lever 54 is fastened to the external thread 42. do. In addition, when the lock of the present invention is installed in a door (not shown), an outer ring 58 is installed in front of the cylinder 10 to prevent separation of the cylinder 10 from the door.

2 and 3, sleeves 60 having different lengths are mounted to the guide holes 34 of the spindle 30 in a retractable manner. The sleeves 60 have a locking jaw 64 formed on the inner circumference of the hole 62, a guide groove 66 is formed along the length direction on the outer circumference of the sleeve 60, and a hole 62 on the guide groove 66. ) And a pin hole 68 laterally formed.

In addition, spindle pins 70 of different lengths are mounted in the holes 62 of the sleeves 60 so that they can be projected out of the holes 62 of the sleeves 60 by the support of the second springs 78. The spindle pin 70 cooperates with the cylinder pins 20 to limit the rotation of the spindle 30. A head 72 supporting the upper ends of the second springs 78 is formed at the upper end of the spindle pin 70 and a cone 74 is formed at the lower end thereof. In addition, a pin groove 76 may be formed on the outer circumference of the spindle pins 70 and the holes 62 of the sleeves 60 may correspond to each other, and the lower end of the second springs 78 may have a locking jaw 64 of the sleeve 60. Is supported). Here, the first springs 22 have a larger spring force than the second springs 78.

Referring again to FIGS. 1 and 2, the stoppers 80 are mounted to the slits 36 of the spindle 30 such that they are protruding out of the spindle 30 by the support of the third springs 88. That is, the third springs 88 are interposed between the spindle 30 and the stoppers 80 to support the stoppers 80 out of the slits 36. First and second pins 82 and 84 are formed on one side of the stoppers 80, and coupling grooves 86 are formed on the other side thereof. The first pin 82 of the stoppers 80 selectively passes through the first through hole 38 of the slits 36 into the pin hole 68 of the sleeves 60 and the pin groove 76 of the spindle pins 70. Is entered to allow rotation of the spindle 30 and the stoppers 80. The second pin 84 of the stoppers 80 selectively enters the keyhole 32 of the spindle 30 through the second through hole 40 of the slits 36.

Meanwhile, coupling grooves 92 formed on one surface of the slider 90 are coupled to the coupling grooves 86 of the stoppers 80 to correspond to the stoppers 80. On the other side of the slider 90 is formed a sliding protrusion 94 which is fitted into the sliding groove 14 of the cylinder 10 so as to be able to slide, the sliding protrusion 94 of the slider 90 is the spindle 30 The stopper 80 enters the slit 36 while being released by the sliding motion from the sliding groove 14 of the cylinder 10 in accordance with the rotation of the). The sliding groove 14 of the cylinder 10 and the sliding protrusion 94 of the slider 90 are preferably formed in a wedge-shaped cross section.

As shown in Figs. 1 and 4, the lock of the present invention is provided with a key (100). On the upper surface of the key 100, a plurality of mountains 102 and valleys 104 having different heights and depths of numbers corresponding to the spindle pins 70 are continuously formed along the length direction, and the mountains 102 are formed. Support jaw 106 is formed to support the bottom of the sleeves 60 on the middle and top of the field. Pinholes 108 are formed in the side of the key 100 to selectively enter the second pin 84 of the stoppers 80.

The operation of the lock according to the invention will now be described.

As shown in FIG. 2, the sliding protrusion 94 of the slider 90 is fitted into the sliding groove 14 of the cylinder 10, and the lower end of the cylinder pins 20 is applied to the spring force of the first springs 22. As a result of entering the guide holes 34 of the spindle 30, the rotation of the spindle 30 is impossible and the lock is locked.

As shown in FIG. 5, when the key 100 enters the keyhole 32 of the spindle 30 to open the lock, the cones of the spindle pins 70 in the valleys 104 of the key 100. 74 is supported while maintaining a predetermined release height, that is, the upper surface of the spindle pin 70 coincides with the interface between the cylinder 10 and the spindle 30. In addition, since the lower ends of the sleeves 60 are supported at the supporting jaws 106 of the key 100 to maintain a predetermined release height, the pin holes 68 of the sleeves 60 and the pin grooves of the spindle pins 70 are formed. 76) will be located in the same plane.

On the other hand, as shown in FIG. 7, when the key 100 having the height of the mountains 102 formed higher than the predetermined dimension enters the keyhole 32 of the spindle 30, The cone 74 of the spindle pins 70 are supported at the apex so that the spindle pins 70 are positioned higher than the set release height. Accordingly, the spindle pins 70 protrude from the holes 62 of the sleeves 60 so that the upper end of the spindle pins 70 enters the guide hole 16 of the cylinder 10 while the spindle 30 is not locked. Will be maintained.

As shown in FIG. 8, when the key 100 having the depth of the valleys 104 formed lower than the predetermined dimension enters the keyhole 32 of the spindle 30, the upper surface of the spindle pins 70 It will be positioned lower than the set release height. Accordingly, while the lower ends of the cylinder pins 20 enter the guide holes 34 of the spindle 30, the locked state in which the spindle 30 cannot be rotated is maintained. That is, the pitch of the hills 102 and the valleys 104, as well as the key 100, which differs in depth and height, prevents the lock of the present invention from being opened.

Referring to FIG. 6, as shown in FIG. 5, the key 100 is rotated while the sleeves 60 and the spindle pins 70 maintain a predetermined release height by the entry of the key 100. The spindle 30 is then rotated in the same direction as the key 100 in the hole 12 of the cylinder 10. At the same time as the rotation of the spindle 30, the sliding protrusion 94 of the slider 90 fitted into the sliding groove 14 of the cylinder 10 is released by the sliding movement, and the stoppers 80 are moved into the slits 36 by sliding. The stoppers 80 are entered while overcoming the spring force of the third springs 88.

As such, when the stoppers 80 enter the slits 36, the first pins 82 of the stoppers 80 pass through the pinholes of the sleeves 60 through the first through holes 38 of the spindle 30. 68 and the pin groove 76 of the spindle pins (70). Then, the second pin 84 of the stoppers 80 enters the pinholes 108 of the key 100 through the second through hole 40 of the spindle 30. Thus, if the rotation of the spindle 30 continues, the locking lever 54 operates the latch to open the lock.

On the other hand, in the case of the key 100 without the supporting jaw 106 is not formed, the pin hole 68 of the sleeves (60) can not be located at a predetermined release height, the first through hole 38 of the spindle 30 The first pin 82 of the stoppers 80 having passed through is caught on the outer circumference of the sleeves 60, thereby preventing the stoppers 80 from operating. Accordingly, while the sliding protrusion 94 of the slider 90 inserted into the sliding groove 14 of the cylinder 10 does not fall out, the locked state in which the spindle 30 cannot be rotated is maintained. In the case of the key 100 having no pinholes 108 formed thereon, the second pins 84 of the stoppers 80 are caught on the side of the key 100 and the stoppers 80 are not operated. In short, the lock 100 of the present invention cannot be opened with the key 100 having no predetermined support jaw 106 and pin holes 108 formed therein.

The above embodiments are merely illustrative of the preferred embodiments of the present invention, and the scope of application of the present invention is not limited to these, and may be appropriately changed within the scope of the same idea. For example, the shape and structure of each component shown in the embodiment of the present invention can be modified.

As described above, according to the lock according to the present invention, the rotation of the spindle is restricted by the cooperation of the cylinder pins and the spindle pins, the pin holes of the sleeves and the pin grooves of the spindle pins, and the supporting jaws and the pin holes of the key. Since the operation of the stoppers is limited by, it is impossible to open the lock because the rotation of the spindle is impossible if the key is not fixed. As a result, the reliability of the lock is improved and excellent competitiveness is obtained.

Claims (3)

A cylinder having guide holes communicating with a central hole; Cylinder pins mounted on the guide holes of the cylinder so as to be projected on and off by support of first springs; A spindle rotatably installed in the hole of the cylinder and having guide holes communicating with a central key hole so as to coincide with the guide holes of the cylinder; Sleeves having holes mounted on the guide holes of the spindle so as to be retractable; And spindle pins releasably mounted by support of second springs to cooperate with the cylinder pins in the holes of the sleeves to limit rotation of the spindle. According to claim 1, Slits formed on the outer periphery of the spindle is mounted retractably by the support of the third spring and penetrates through the spindle and the sleeve to enter the pin groove formed on the outer periphery of the spindle pins And a slider having stoppers having a first pin and a sliding protrusion fitted into the sliding groove of the cylinder to slide the stoppers into the slits to allow rotation of the spindle. Lock. A cylinder having guide holes communicating with a central hole, the sliding groove being formed along the longitudinal direction on an inner circumference of the hole; Cylinder pins mounted on the guide holes of the cylinder so as to be projected on and off by support of first springs; Slits are rotatably installed in the holes of the cylinder and have guide holes communicating with the central key hole to coincide with the guide holes of the cylinder, and slits are formed on the outer circumference so as to have the same circumferential centerline as these guide holes, A spindle having a first through hole and a second through hole communicating with the key hole above and below the inner surface of the slits; Sleeves releasably mounted in the guide holes of the spindle, the sleeves having pin holes communicating with the first through holes of the spindle and corresponding holes; Spindle pins retractably mounted to the holes of the sleeves by support of second springs so as to cooperate with the cylinder pins to limit rotation of the spindle, and having pin grooves corresponding to each other with the pin holes of the sleeves; A first pin which is retractably mounted to the slits of the spindle by the support of third springs and which can enter the pin groove of the spindle pins through the first through hole of the spindle and the pin hole of the sleeves; Stoppers having a second pin that can enter the keyhole through a second through hole of the spindle; A slider having a sliding protrusion fitted into the sliding groove of the cylinder to slide the stoppers into the slits to allow rotation of the spindle; Mountains and valleys are continuously formed on an upper surface to position the spindle pins at a predetermined release height, and support jaws are formed on the middle and top of the mountains to support the sleeves at a predetermined release height, and the second A lock comprising a key having pinholes formed on a side thereof to allow a pin to enter.