KR101121669B1 - cylinder lock using a screw type key - Google Patents

Abstract

The present invention is to use a helical key formed with a spiral key groove to be more stably prevented the unwanted release due to external intrusion, consisting of a head exposed to the outside and a cylindrical body extending to the rear of the head, A key hole is formed through the head and the cylindrical body in the axial direction, and a helical groove is formed on an inner circumferential surface of the key hole, and a plurality of first pin through holes communicating with the helical groove are formed on the circumferential surface of the cylindrical body. 1 cylinder portion; It is installed rotatably while wrapping the cylindrical body of the first cylinder portion, the second pin hole is formed at the position corresponding to the first pin hole, respectively, the rear end is engaged with the end of the key to rotate the key In addition, the rear end is rotated by a second cylinder portion provided with a mating portion engaging with the locking lever; A third cylinder part fixed to the first cylinder part to surround the second cylinder part, and having a third pin hole corresponding to each second pin hole formed on a circumferential surface thereof; The tip is installed in each of the first pin through hole is protruded into the groove of the key hole is selectively pressed by the key, provided with a plurality of number pins formed in different lengths; A plurality of engaging pins installed in each of the second pin holes and in contact with a rear end of each number pin; It is installed to be moved up and down elastically in each of the third pin through hole, characterized in that it comprises a plurality of fixing pins: in contact with the rear end of each engaging pin.

Description

{Cylinder lock using a screw type key}

The present invention relates to a lock, and more particularly, to a lock using a new type of spiral key to more reliably prevent unwanted release due to external intrusion while using a spiral key formed with a spiral key groove. .

In general, a lock means a lock of a door such as a front door, a drawer, and a safe.

The lock may be classified into a word lock, a lever tumbler lock, a pin tumbler lock, and the like, depending on the opening and closing means. Cylindrical locks are commonly used.

The cylindrical lock generally has a double structure in which an inner cylinder overlaps a cylindrical outer cylinder, and a plurality of holes corresponding to each other are formed in a row in the outer cylinder and the inner cylinder, and the lock hole is equipped with pins and springs of different lengths. The pin is a structure that is pressed so as to be retracted by the spring force of the spring, when the key that fits the lock pattern is inserted into the key hole of the inner cylinder is released by unlocking the latch as the inner cylinder rotates.

However, the conventional cylindrical lock described above has a problem that the pin can be easily aligned in the release position when properly operated using a tool such as an illegally modified pseudo key or a ringed pin.

Accordingly, a similar key or other tool is provided by providing a lock and a key in which a number pin of a lock and a seating recess of a key are arranged in a spiral manner, as in Korean Utility Model Publication No. 20-0371745 filed and registered by the present applicant. The technology to prevent the ease of using the lock has been developed and used.

However, the lock of the helical arrangement has a high possibility that foreign matter is introduced because the entry side of the lock is opened in a cross-shaped structure, the lock damage is easily caused by this.

In addition, the conventional helical lock of the above-described conventional spiral arrangement may cause the drill to be easily introduced, so that an external intruder breaks the lock by a drill or the like.

In particular, the above-described conventional helical lock has a double-actuated structure in consideration of the fact that the lock of the conventional spiral arrangement is composed of a double-acting structure operated between the cylinder in which the rotational motion by the locking pin is located on the innermost side and the cylinder in which the substantial rotational motion is made. If only the release pin of the locking pin is located in has a problem that can be easily opened.

The present invention has been made to solve the various problems according to the prior art described above, the object of the present invention is to achieve the prevention of destruction by using a tool such as a drill, the rotating cylinder is not exposed to the outside 3 It is to provide a lock using a new type of spiral key to improve the intrusion prevention function by the construction of the middle cylinder structure.

According to the lock of the present invention for achieving the above object is composed of a head that is exposed to the outside and a cylindrical body extending to the rear of the head, the key hole is formed through the axial direction in the head and the cylindrical body and the key hole A helical groove is formed on an inner circumferential surface of the first cylinder portion through which a plurality of first pin holes penetrates into the helical groove is formed on a circumferential surface of the cylindrical body; It is installed rotatably while wrapping the cylindrical body of the first cylinder portion, the second pin hole is formed at the position corresponding to the first pin hole, respectively, the rear end is engaged with the end of the key to rotate the key In addition, the rear end is rotated by a second cylinder portion provided with a mating portion engaging with the locking lever; A third cylinder part fixed to the first cylinder part to surround the second cylinder part, and having a third pin hole corresponding to each second pin hole formed on a circumferential surface thereof; The tip is installed in each of the first pin through hole is protruded into the groove of the key hole is selectively pressed by the key, provided with a plurality of number pins formed in different lengths; A plurality of engaging pins installed in each of the second pin holes and in contact with a rear end of each number pin; It is installed to be moved up and down elastically in each of the third pin through hole, characterized in that it comprises a plurality of fixing pins: in contact with the rear end of each engaging pin.

Here, a protruding end having an inner portion protruding forward is formed at the front end of the third cylinder part, and a concave end is formed at the inner wall surface of the head constituting the first cylinder part so as to indent the protruding end, and an outer circumferential surface of the head And a plurality of through holes having a structure corresponding to each other on the outer circumferential surface of the protruding end, and a plurality of the plurality of holes intersecting the inlet portion of the key hole while being installed in the through hole to be elastically movable in a state protruding into the key hole of the head. It is characterized in that the safety pin is further provided.

In addition, the engaging pin is characterized in that it is formed to have the same height as the height of the second pin through hole.

In addition, a positioning hole is formed through the outer circumferential surface of the third cylinder portion, and a positioning groove is formed in the outer circumferential surface of the second cylinder corresponding thereto, and an end is selectively seated in the positioning groove in the positioning hole. Positioning pin is characterized in that the elastic movement is installed.

As described above, the lock using the spiral key of the present invention has an effect that unwanted unlocking is extremely difficult as keys and keyholes are formed in a spiral unlike general keys.

In particular, since the lock of the present invention performs the restraint on relative rotation between the three cylinder parts, it is an undesired solution compared to the prior art in which only the restraint on the relative rotation between the first cylinder part and the second cylinder part is performed. It has the effect that it can be prevented more stably.

In addition, the lock of the present invention has an effect that the safety pin is additionally provided to the inlet portion of the spiral groove of the key hole to block the corresponding portion to prevent the introduction of various foreign substances and prevent the drill breakage.

1 is an exploded perspective view showing the structure of a lock according to a preferred embodiment of the present invention
Figure 2 is a cross-sectional view showing for explaining the structure of the first cylinder of the lock according to an embodiment of the present invention
3 is a cross-sectional view showing the structure of the second cylinder portion of the lock according to an embodiment of the present invention.
4 is a cross-sectional view showing the structure of a third cylinder of the lock according to an embodiment of the present invention.
5 to 7 are cross-sectional views for explaining the operation of the lock according to an embodiment of the present invention.

Hereinafter, a preferred embodiment of the lock using the spiral key of the present invention will be described with reference to FIGS. 1 to 7.

Prior to the description of the embodiment, the helical key 10 is a handle 11 that the user holds by hand, a fixed shaft 12 extending from the handle 11, and a circumference around the fixed shaft 12. The rotatable key is composed of a rotating cylinder 13 that is rotatably installed and inserted into the key hole of the lock, and when the handle 11 is turned, the rotating cylinder 13 maintains the fixed state at the corresponding position. 11) and only the fixed shaft 12 is rotated to perform the action of locking or unlocking the lock.

In this case, a mating slit 14 is formed at an end of the fixed shaft 12, and the mating slit 14 is mated with the mating protrusion 211 formed at the mating part 210 of the lock to be described later.

In addition, one or more key blades 15 are spirally formed on the circumferential surface of the rotary cylinder 13, and the plurality of mounting recesses 16 are recessed in the key blades 15. At this time, the seating recess 16 is formed so that the depth is different depending on the number pin 400 of the lock to be described later.

1 to 4, the lock according to the embodiment of the present invention has a large first cylinder part 100, a second cylinder part 200, a third cylinder part 300, and a number pin 400. And a locking pin 500 and a fixing pin 600.

This will be described in more detail below for each configuration.

First, the first cylinder portion 100 is a portion constituting the body of the lock according to an embodiment of the present invention, it is composed of a head 110 and a cylindrical body 120 as shown in Figs.

Here, the head 110 is a portion that forms the front side and is exposed to the outside, the cylindrical body 120 is a portion extending to the rear of the head 110.

In particular, in the head 110 and the cylindrical body 120, the key hole 130 is formed through the axial direction, and the spiral groove 131 is formed on the inner circumferential surface of the key hole 130. In this case, the spiral groove 131 is formed in plural.

In addition, a plurality of first pin through holes 101 communicating with the spiral groove 131 are formed in a circumferential surface of the cylindrical body 120. At this time, the stepped portion 102 is formed in the outlet side portion (side portion of the side in communication with the spiral groove) of the first pin through hole 101 is configured to prevent unwanted removal of the number pin 400 to be described later.

Next, the second cylinder portion 200 is a portion that is rotatably installed while wrapping the cylindrical body 120 of the first cylinder portion 100, the hollow inside as shown in Figs. Of the structure.

At this time, the second cylinder portion 200 is formed through the second pin hole 201 through the position corresponding to the first pin hole 101, respectively.

In addition, a mold fitting part 210 is provided at the rear end of the second cylinder part 200.

The fitting portion 210 is coupled to the end of the key 10 to transmit the operating force according to the rotation of the key 10 to the second cylinder portion 200 so that the second cylinder portion 200 is rotated. As a series of configurations, the front end is provided with a mating protrusion 211 that is engaged with the mating slit 14 of the key 10, and at the rear end, a coupling groove (not shown) is engaged with the front end of the operating lever 220. The urine is formed. At this time, the operation lever 220 is a lever which is operated to reach the locking or unlocking position while being coupled with the locking lever 21 of the locking device of the door in which the lock is installed.

Next, the third cylinder 300 forms an exterior body installed in the door among the lock portions, and selectively rotates the second cylinder 200 together with the first cylinder 100. It is a series of configurations that determine.

The third cylinder part 300 is fixed to the first cylinder part 100 as shown in FIGS. 1 and 4, and is formed to surround the second cylinder part 200.

In particular, the third cylinder portion 300 has a rear side is closed and the front side is formed in an open cylindrical shape, through the opened front side of the second cylinder portion 200 and the first cylinder portion 100 The cylindrical body 120 is comprised so that it may be sequentially indented. At this time, the operating lever 220 is exposed while the rear end of the mating portion 210 provided at the rear end of the second cylinder portion 200 is exposed to the center side of the closed rear side portion of the third cylinder 300. An exposed hole 302 is formed to protrude.

In addition, a protruding end 310 having an inner portion protruding forward is formed at the front end of the third cylinder part 300, and the protruding portion is formed on an inner wall surface of the head 110 forming the first cylinder part 100. The concave end 111 is concave so that the end 310 is concave, and a plurality of through holes 112 and 311 having a structure corresponding to each other are formed on the outer circumferential surface of the head 110 and the outer circumferential surface of the protruding end 310, respectively. In addition, a plurality of safety pins 320 are installed in the through holes 112 and 311 so as to be elastically movable in a state in which a portion thereof protrudes into the key hole 130 of the head 110. This is further provided.

At this time, each of the safety pins 320 is used as a series of structures for coupling between the third cylinder portion 200 and the first cylinder portion 100 and the intruder tries to damage the inside of the key hole 130 by using a drill. If it is to serve to prevent damage by the drill by providing an interference force to the rotation of the drill, and also serves to prevent the entry of external foreign matter by intercepting the inlet side portion of the key hole 130 in normal times. do. In particular, each of the safety pins 320 is preferably made of a heat-treated metal material so that the damage by the drill can be stably prevented.

In addition, a third pin through hole 301 corresponding to each of the second pin through holes 201 formed in the second cylinder 200 is formed on the circumferential surface of the third cylinder part 300.

Next, the number pin 400 is a series so that the second cylinder portion 200 is not selectively rotated with respect to the first cylinder portion 100 in accordance with whether or not the seat recess portion 16 formed in the key 10 is matched. It is the composition.

The number pin 400 is provided in a plurality as shown in Figure 1 attached to each of the first pin through hole 101 of the first cylinder portion 100, the tip is a spiral groove 131 of the key hole 130 Configured to be selectively pressed by the key while being formed to protrude into).

In particular, the number pins 400 are formed to have different lengths according to the set number. Of course, one lock may be provided with a plurality of identical number pins 400, all may be provided with different number pins 400.

In addition, the tip end portion of the number pin 400, which is inserted into the seating recess 16 of the key 10, is relatively smaller in diameter than the trailing side portion, and toward the tip end portion. It is preferably formed to form a shape that gradually decreases in diameter. This, only the front end side portion of the number pin 400 completely passes through the first pin through hole 101, the rear end side portion of the number pin 400 is stepped end 102 of the first pin through hole 101 This is to prevent unwanted removal into the key hole 130 is caught.

Next, as the locking pin 500 is changed in position according to the position of the number pin 400, the second cylinder part 200 is selective with respect to the first cylinder part 100 and the third cylinder part 300. It is a series of configurations that do not rotate.

At this time, the engaging pin 500 is provided in a plurality as shown in Figure 1 attached to each of the second pin through hole 201 of the second cylinder portion 200.

In particular, the locking pins 500 are suggested to have the same height as the height of the second pin hole 201. Of course, unlike the embodiment, the height of each of the locking pins 500 may be formed differently from the height of the second pin through hole 201, in which case the height of the aforementioned number pin 400 and the fixing pin (to be described later) 600 is set in association with the thickness.

Next, the fixing pin 600 is a series of positions so that the second cylinder portion 200 is not selectively rotated with respect to the third cylinder portion 30 while the position is changed according to the position of the locking pin 500. Configuration.

At this time, the fixing pin 600 is provided in plurality as shown in Figure 1, each of which is installed so as to move up and down elastically in each of the third pin hole 301 of the third cylinder portion 300 It is configured to be in contact with the rear end of each engaging pin (500).

In particular, the thickness of each of the fixing pin 600 is formed to correspond to the height of each number pin 400 corresponding thereto. That is, when the height of the number pin 400 is high, the fixing pin 600 corresponding thereto is thinly formed, and when the height of the number pin 400 is low, the fixing pin 600 corresponding thereto is formed thick. Will be. As a result, when the key 10 is not inserted, the heights of the number pins 400 inserted into the spiral grooves 131 in the key hole 130 are equal to each other, thereby preventing malfunction of the key 10 when the key 10 is inserted. do. Of course, each of the fixing pins 600 may have the same thickness.

Meanwhile, in the embodiment of the present invention, the positioning hole 303 is formed through the outer circumferential surface of the third cylinder part 300 and the positioning groove 202 is recessed in the outer circumferential surface of the second cylinder 200 corresponding thereto. Is formed, the positioning hole 303 further suggests that the positioning pin 700, the end of which is selectively seated in the positioning groove 202 is installed to be elastically movable.

At this time, the positioning pin 700 is a series of configurations that enable the user to accurately recognize whether the lock or unlock according to the rotation of the key 10.

That is, when the user reaches the locked position or the unlocked position while the user rotates the key 10, the positioning groove of the second cylinder part 200 which is rotated in association with the key 10. (202) As the position coincides with the position of the positioning hole 303 of the third cylinder portion 300, the tip of the positioning pin 700 is inserted into the positioning groove 202, so that the user may correct this. It is recognized so that no further excessive key rotation can be prevented.

In the following, the operation of the lock according to the embodiment of the present invention described above will be described.

First, Fig. 5 attached shows a lock without a key inserted.

In this case, the first pin through hole 101 of the first cylinder portion 100 constituting the lock and the second pin through hole 201 of the second cylinder portion 200 and the third pin of the third cylinder portion 300. The position of the through hole 301 is in a state consistent with each other, and the locking pin 500 and the third pin located in the number pin 400 and the second pin through hole 201 located in the first pin through hole (101) The fixing pins 600 positioned in the pin through hole 301 are all free, and the spiral groove 131 of the key hole 130 is maximized by the restoring force of the elastic member 601 for elastically moving the fixing pin 600. ) To protrude into. Accordingly, each of the locking pins 500 may be partially located in the first pin hole 101 formed in the cylindrical body 120 of the first cylinder part 100, thereby allowing the second cylinder part 200 and the first cylinder part 100 to be positioned. Relative rotation between the ()) becomes impossible, and each of the fixing pin 600 is also located in the second pin through-hole 201 formed in the second cylinder portion 200 in accordance with the position movement of the respective locking pins 500 Relative rotation between the two cylinder portion 200 and the third cylinder portion 300 is impossible. In other words, the lock operation is prevented.

Of course, the number pin 400 is formed so that only the front end thereof penetrates completely through the first pin hole 101 and is located in the spiral groove 131 of the key hole 130. Since it is configured to be caught on the stepped portion 102 of the 101, each of the pins (400, 500, 600) is undesirably removed into the spiral groove (131).

Therefore, the operation lever 220 connected to the rear end of the second cylinder part 200 is positioned so that the locking lever 21 is kept in a locked (or unlocked) state, thereby preventing unwanted opening of the door.

In addition, when the user inserts the key 10 into the key hole 130 as shown in FIG. 6 attached in the initial state as described above, the rotating cylinder 13 of the key 10 opens the inside of the key hole 130. The key blade 15 is rotated with respect to the fixed shaft 12 while being guided by the spiral groove 131 formed along the guide blade 15.

In addition, the number pins 400 protruding into the spiral groove 13 through which the key blades 15 pass by the user inserting the key 10 into the key hole 130 may be the key blades 15. Depending on the shape of each seating recessed portion 16 formed in the) protrudes or retreats while overcoming the elastic force of the elastic member 601 coupled to each fixing pin 600.

And finally, when the key 10 is completely inserted into the key hole 130, each number pin 400 is seated on each seating recess 16 formed in the key blade 15 of the key 10 and the The mold slit 14 formed at the end of the fixed shaft 12 constituting the key 10 is mated with the mold protrusion 211 formed in the mold 210 of the lock.

At this time, if the key 10 is not paired with the lock according to the embodiment of the present invention, even if the height of each number pin 400 is changed, the position of the locking pin 500 is exactly the second pin hole ( 201) as well as the position of the fixing pin 600 is also not accurately positioned within the third pin hole 301, the relative rotation between the second cylinder portion 200 and the first cylinder portion 100 is not possible. In addition to maintaining the state, a relative rotation between the second cylinder part 200 and the third cylinder part 300 is maintained.

If the key 10 is paired with the lock according to an embodiment of the present invention, the height of each number pin 400 is changed while the position of the locking pin 500 is exactly the second pin hole 201. In addition to being positioned in the), the position of the fixing pin 600 is also precisely positioned within the third pin through hole 301, so that the relative rotation between the second cylinder portion 200 and the first cylinder portion 100 is made possible. The relative rotation between the second cylinder portion 200 and the third cylinder portion 300 is achieved.

Accordingly, the second cylinder 200 is in a rotatable state, and in this state, when the user turns the handle 11 of the key 10 as shown in FIG. 7, the rotating cylinder 13 of the key 11 is rotated. ) Maintains a fixed state by engaging with each number pin 400, and only the handle 11 and the fixed shaft 12 are rotated, and thus the fitting portion 210 engaged with the fixed shaft 12 is rotated. The second cylinder 200 is rotated while the rotation is performed.

In addition, the operating lever 220 engaged with the rear end of the mold part 210 is also rotated by the rotation of the second cylinder part 200, and the locking lever 21 is rotated by the operation lever 220. ) Is also rotated to reach the unlocked position and the door can be opened.

In addition, as described above, the positioning pin 700 positioned in the positioning hole 303 of the third cylinder part 300 while the second cylinder part 200 is rotated according to the rotation of the key 10. When it is seated in the positioning groove 202 formed on the outer circumferential surface of the second cylinder portion 200, the feeling is transmitted to the user, thereby allowing the user to recognize the unlocked state of the lock.

On the other hand, in the unlocked state of the lock as described above, the process of bringing the lock to the locked state again proceeds in the reverse order of the above-described unlocking process.

As a result, the lock according to the embodiment of the present invention does not merely perform restraint on relative rotation between the first cylinder part 100 and the second cylinder part 200, but the second cylinder part 200 and the third cylinder. By allowing restraint on relative rotation between the parts 300, unwanted releases resulting from the use of mismatched keys 10 can be more stably prevented.

In addition, various foreign matters may be prevented from entering the key hole 130 by the plurality of safety pins 320 protruding toward the inlet portion of the spiral groove 131 of the key hole 130. Attempts to break the lock by, for example, can be blocked by providing interference of drill rotation by the safety pin 320, thereby improving the reliability of the unwanted release.

100. First cylinder 101. First pin through hole
102. Step 110. Head
111. Indented end 112. Through hole
120. Cylindrical body 130. Keyhole
131. Spiral groove 200. Second cylinder part
201.Secondary pin hole 202. Positioning groove
210. Molding portion 211. Molding protrusion
220. Operation lever 300. Third cylinder part
301. Third pin hole 302. Exposed hole
310. Protrusion end 311. Through hole
320.Safety pin 400.Number pin
500. Locking pin 600. Locking pin
601. Elastic member 700. Positioning pin

Claims (4)

The head is exposed to the outside and the cylindrical body is extended to the rear of the head, the key hole is formed in the axial direction in the head and the cylindrical body and the inner circumferential surface of the key hole is formed a spiral groove, A first cylinder portion having a circumferential surface formed therethrough with a plurality of first pin holes communicating with the spiral groove;
It is installed rotatably while wrapping the cylindrical body of the first cylinder portion, the second pin hole is formed at the position corresponding to the first pin hole, respectively, the rear end is engaged with the end of the key to rotate the key In addition, the rear end is rotated by a second cylinder portion provided with a mating portion engaging with the locking lever;
A third cylinder part fixed to the first cylinder part to surround the second cylinder part, and having a third pin hole corresponding to each second pin hole formed on a circumferential surface thereof;
The tip is installed in each of the first pin through hole is protruded into the groove of the key hole is selectively pressed by the key, provided with a plurality of number pins formed in different lengths;
A plurality of engaging pins installed in each of the second pin holes and in contact with a rear end of each number pin;
A lock using a helical key, characterized in that it comprises a plurality of fixing pins which are installed to be moved up and down elastically in each of the third pin through hole, the plurality of fixing pins in contact with the rear end of each engaging pin. The method of claim 1,
The front end of the third cylinder portion is formed with a protruding end of the inner portion protruding forward,
A concave end is formed in the inner wall of the head constituting the first cylinder portion so that the protruding end is concave,
On the outer circumferential surface of the head and the outer circumferential surface of the protruding end are respectively formed through holes corresponding to each other, and in the through hole, a part of the inlet portion of the key hole is installed to be elastically movable while protruding into the key hole of the head. Lock using a spiral key, characterized in that a plurality of safety pins further blocking the. The method of claim 1,
Each locking pin is a lock using a spiral key, characterized in that formed to have the same height as the height of the second pin through hole. The method of claim 1,
Positioning holes are formed in the outer circumferential surface of the third cylinder portion, and positioning grooves are formed in the outer circumferential surface of the second cylinder corresponding thereto.
The lock using a helical key, characterized in that the positioning pin is installed in the positioning hole, the positioning pin which is selectively seated into the positioning groove so as to be elastically movable.

Images