CN201180406Y - Lock core with multiple protection mechanisms - Google Patents

Abstract

The utility model is a lock core with multiple protection mechanisms. The lock core is composed of a lock shell, a limiter, a code piece, an isolation piece and a rotating cylinder. Two grooves are arranged on the inner wall of the lock shell. A plurality of lock bead holes are arranged in the first groove, and elastic elements and lock beads are implanted in sequence. The limiter is arranged in the lock shell in a rotatable shape to limit the sliding of the code piece and the isolation piece. The code piece and the isolation piece are accommodated in the limiter, and lock beads are convexly arranged at the two ends or the selected end of the code piece, so that the lock beads can be embedded in the first and second grooves of the lock shell. The rotating cylinder penetrates the code piece and the isolation piece arranged side by side, and a key hole is arranged in the center of the rotating cylinder, so that the inserted key can push the code piece to unlock.

Description

Lock cylinder with multiple protection mechanisms

technical field

The utility model relates to a lock cylinder with multiple protection mechanisms, in particular to a structural design of a lock cylinder with multiple security mechanisms that can be applied to various locks to achieve the anti-theft safety function.

Background technique

The lock core structure of the known anti-theft lockset usually consists of a rotating cylinder, a casing, at least one row of upper and lower lock beads and springs. The rotating cylinder is rotatably embedded in the casing. At least one row of corresponding radial through holes, so that the lower locking beads and the upper locking beads are respectively implanted in each through hole, and a compression spring is arranged on the top of the upper locking beads to push the upper and lower locking beads on the drum The anti-rotation state of the lock is formed between the lock and the shell, and the key must be inserted into the keyhole of the drum to open it, so as to push the lower lock bead and the upper lock bead to slide, so that the contact surface of the upper and lower lock bead is just on the lock cylinder and the lock. The seams of the shells are fitted together so that the lock can be unlocked by smoothly twisting the drum. But the lock core of this kind of known anti-theft lockset, usually the lower lock bead is supported by the lock bead and the spring and is exposed in the keyhole of the rotating drum, and the positions of each protruding lock bead can be seen. When people try to unlock When using tools such as probes, it is easy to use tools such as probes to penetrate into the keyhole and press each lock bead to detect one by one (apply lateral force), thereby simulating and making a fake key to attempt to unlock the lock. Therefore, the practical protection and anti-theft effects of the anti-theft lock cylinder are known. bad.

Utility model content

The purpose of this utility model is to provide a lock cylinder with multiple protection mechanisms, which is based on the structural mode that the key turns the code chip first, and the position, depth and other information of the lock bead cannot be detected from the key hole of the drum by improper means. The first layer of protection mechanism is achieved; secondly, the two ends and the selected end of the code chip are protrudingly provided with lock beads that are latched with the lock case, and the code chip must be pushed with the correct key to make the lock beads of the code chip accurately disengage. In this way, the second layer of protection mechanism is achieved; another row of elastic elements and lock beads are provided in the lock housing to form a latch. The third layer of protection mechanism is achieved, that is, the lock cylinder that constitutes multiple protection mechanisms.

The purpose of this utility model is achieved in that a lock core with multiple protection mechanisms, the lock core includes:

A lock housing with a round hole, the inner wall of the round hole is provided with a corresponding first groove and a second groove extending axially, a row of radial locking bead holes are arranged in the first groove, and the locking bead holes are embedded Insert the elastic element and the first lock bead;

A restrictor has two parallel limiting pieces, a connecting part is arranged between the two limiting pieces, a perforation is arranged in the center of the connecting part, and a container with two ends open is formed between the two limiting pieces. The space is installed, and the limit piece is rotatably installed in the round hole of the lock case;

A plurality of cipher chips, each of which is a chip body with a through hole in the center, one or more inclined guide surfaces are provided on the selected side of the inner wall of the through hole, and protruding guide surfaces are selectively provided on two corresponding sides of the cipher chip periphery. The second lock bead; a plurality of cipher chips are arranged and installed in the accommodating space of the limiter, the second lock bead is latched in the second groove of the lock case, and the first lock bead in the lock case is connected with the second lock on one side bead top contact;

A rotary cylinder is provided with a protruding ring with a larger diameter at the front end, and a key hole is provided in the center of the protruding ring to extend axially.

The cipher chip is provided with a second lock bead on one side, and the second lock bead is latched with the first groove of the lock case, and makes the first lock bead contact with the second lock bead.

The cipher chip is provided with a second lock bead on one side, and the second lock bead is latched with the second groove of the lock case.

The cipher chip is provided with a second lock bead on two corresponding sides, wherein a second lock bead is latched with the first groove of the lock housing, and the first lock bead is in top contact with the second lock bead, And another second lock bead is latched with the second groove of the lock case.

There are multiple spacers, a through hole in the center of the spacer, an arc-shaped groove on the inner wall of the through hole, parallel side walls on the two sides of the spacer to match the accommodating space of the limiter, multiple spacers The slices are interleaved and arranged between each encryption slice, and a plurality of encryption slices are separated into a certain interval.

The height of the keyhole of the rotating cylinder is greater than the diameter of the rotating cylinder, the keyhole forms an open slot in the rear section of the convex ring, and the rear end of the rotating cylinder is provided with a radial perforation as a fixed part.

The end of the rotating cylinder is sleeved with a limit piece, the limit piece is provided with a through hole matching the diameter of the rotating cylinder, and the inner wall of the through hole is provided with a protrusion corresponding to the key hole, and the two side walls of the limit piece respectively form two The rhombus shape of the inclined surface, the limit piece is sleeved at the end of the rotating cylinder, the lug is embedded in the cut groove of the keyhole, and the two side walls can be pushed against the inner wall of the accommodating space of the limiter after rotation.

From the above, the utility model arranges and installs a plurality of cipher chips in the accommodating space of the limiter, so that the second lock bead is latched to the first groove and the second groove of the lock housing; The through-holes of the side-by-side cipher pieces form a rotatable shape, and there is a key hole in the center. The keyhole has a slot corresponding to the oblique guide surface of the cipher piece; only by taking the correct key twist, all the cipher pieces slide synchronously to unlock Only when it is in the right position can the password chip and the limiter be rotated to achieve the unlocking function, thereby forming a lock cylinder with multiple protection mechanisms.

Description of drawings

Fig. 1 is a perspective view of the disassembled state of each component of the utility model.

Fig. 2 is a three-dimensional sectional view of the combined state of the lock cylinder of the present invention.

Fig. 3 is a cross-sectional view of the combined state of the lock cylinder of the present invention.

Fig. 4 is a combined schematic diagram of the first embodiment of the cipher chip of the present invention.

Fig. 5 is a combined schematic diagram of the second embodiment of the cipher chip of the present invention.

Fig. 6 is a combined schematic diagram of the third embodiment of the cipher chip of the present invention.

Fig. 7 is a schematic diagram of the combined state of the spacer of the present invention.

Fig. 8 is a schematic diagram of the action of the first embodiment of the cipher chip of the present invention.

Fig. 9 is a schematic diagram of the action of the first embodiment of the cipher chip of the present invention.

Fig. 10 is a schematic diagram of the action of the second embodiment of the cipher chip of the present invention.

Fig. 11 is a schematic diagram of the action of the second embodiment of the cipher chip of the present invention.

Fig. 12 is a schematic diagram of the action of the third embodiment of the cipher chip of the present invention.

Fig. 13 is a schematic diagram of the action of the third embodiment of the cipher chip of the present invention.

Fig. 14 is a schematic diagram of the action of the anti-theft mechanism of the cipher chip of the present invention.

Fig. 15 is a schematic diagram of the action of the spacer of the present invention.

Fig. 16 is a perspective view of the unlocked state of all code chips of the present invention.

Fig. 17 is a perspective view of an embodiment of a limiting piece of the present invention.

Fig. 18 is a cross-sectional view of an embodiment of a spacer of the present invention.

Fig. 19 is a schematic diagram of the action of the embodiment of the limiting sheet of the present invention.

Detailed ways

As shown in Fig. 1 and Fig. 2, the lock core of the multi-protection mechanism of the present invention is mainly composed of a lock case 1, a limiter 2, a plurality of password chips 3, a plurality of spacers 4 and a drum 5, in:

The lock case 1, as shown in Figure 1 and Figure 2, is a hollow cylinder mounted on an anti-theft lockset. Its appearance can be formed into any shape, and a round hole 11 is provided in the middle to provide the following limiter 2 and a plurality of password chips 3 , the spacer 4 and the drum 5 are accommodated, and the inner wall of the selected circular hole 11 is provided with a corresponding first groove 12 and a second groove 13 extending axially, and a first groove 12 is provided in the first groove 12. A plurality of radial locking bead holes 14 are arranged in a row, and an elastic element 15 and a first locking bead 16 are implanted in the locking bead holes 14 sequentially. The elastic element 15 can be a compression spring.

Limiter 2, as shown in Fig. 1 and Fig. 2, is to constitute the structural main body of cylindrical shape, has two parallel spacer pieces 21, is provided with a connecting portion 22 as connecting at the same end of spacer piece 21, and this linking portion 22 is provided with a perforation 221 at the center, and forms an accommodating space 23 with two ends open between the two limiting pieces 21, for accommodating and guiding a plurality of cipher pieces 3 and spacers 4 to be arranged neatly and can Sliding; thus, the limiting member 2 is installed in the round hole 11 of the lock case 1 to be rotatable.

A plurality of password chips 3, as shown in Figure 1 and Figure 2, each is the sheet body that the center is provided with a through hole 31, and this through hole 31 is oval shape, and the selected side of through hole 31 inner wall is provided with one or more than one The slanted guide surface 32, as shown in the figure, can be two symmetrical slanted guide surfaces 32; and the outer two sides of the password chip 3 are provided with parallel side walls 33 to match the accommodating space 23 of the limiter 2, and Optionally provided with protruding second lock beads 34, 34' on the other two corresponding sides, so it can be implemented as a second lock bead 34 on the top, or a second lock bead 34' on the bottom, or on and Respectively a second lock bead 34,34 ' is all arranged below, and the protruding height of each piece code chip 3 second lock beads 34,34' can constitute multiple height dimensions; thus a plurality of code chips 3 are arranged and installed on In the accommodating space 23 of the limiter 2 (as shown in FIG. 3 ), the second lock bead 34 ′ is latched to the second groove 13 of the lock housing 1 (as shown in FIGS. 3 to 6 ), and according to the first The heights of the two lock beads 34 and 34 ′ present different latching depths, and make the first lock bead 16 of the lock case 1 come into contact with the upper second lock bead 34 .

A plurality of spacers 4, as shown in Figure 1 and Figure 2, are also sheets with a through hole 41 in the center, the through hole 41 is circular, and the direction and position of the aforementioned inclined guide surface 32 are the same on the inner wall of the through hole 41 An arc-shaped groove 42 is provided at the center; parallel side walls 43 are provided on the two sides of the spacer 4 to match the accommodating space 23 of the limiter 2; thus, a plurality of spacers 4 are interspersed and arranged on each Between the code chips 3, a plurality of code chips 3 are separated into a certain distance, so that the second lock beads 34 on the upper side are aligned with the first lock beads 16 of the aforementioned lock housing 1 to make contact with each other;

Rotary drum 5, as shown in Figure 1 to Figure 3, is a cylindrical structure main body, is provided with a larger diameter protruding ring 51 at the front end, and the center of this protruding ring 51 is provided with a key hole 52 and is axially extended, and this key hole The height of 52 is greater than the diameter of rotating drum 5, so the keyhole 52 forms an open slot 52' in the rear section of the convex ring 51, and the rear end of rotating drum 5 is provided with a radial perforation 53 as a fixed part during assembly; This is that rotating cylinder 5 is perforated in through hole 31 and 41 (as shown in Fig. 4 to Fig. 7) of cipher sheet 3 and spacer sheet 4, and utilizes this protruding ring 51 to seal the front end of lock housing 1 round hole 11.

The design of the structural features and assembly relationship of the above-mentioned lock housing 1, limiter 2, password chip 3, spacer 4 and drum 5 constitutes the lock core of the utility model with multiple protection mechanisms, which can be further applied to various locks. And then achieve the multiple safety mechanism of the anti-theft safety function. The function of its multiple anti-theft mechanism, as shown in Figure 4 to Figure 6, in the through hole 31 of each code chip 3 only presents the inclined guide surface 32 that structure is all identical, can not use tools such as probe to test the first lock bead 16 and The locking depth of the second lock beads 34 and 34 ′ can achieve the anti-theft function of the first level. Secondly, the two ends or the selected end of the combination piece 3 are protrudingly provided with the second lock beads 34, 34' which are latched with the lock housing 1, and the combination piece 3 must be pushed with the correct key to make the second lock of the combination piece 3 The beads 34, 34' are accurately detached, thereby achieving a second layer of protection mechanism. Another row of elastic elements 15 and the first lock bead 16 are arranged in the lock housing 1 to form a latch. Only when the password chip 3 is pushed correctly can the first lock bead 16 in the lock housing 1 be accurately disengaged. This achieves the third layer of defense mechanism.

The unlocking action when the utility model is applied, as shown in Figure 8 and Figure 9, when the key 6 with the correct tooth shape is inserted into the rotating cylinder 5 and twisted, its active end 61 pushes the inclined guide surface 32 of the password chip 3 to make it slide , so that the second lock bead 34 ′ at the lower end of the code chip 3 can be separated from the second groove 13 , and then the code chip 3 and the limiter 2 can be rotated. Or as shown in Figure 10 and Figure 11, upper and lower edges are all provided with the password chip 3 of second lock bead 34,34 ', when the key 6 of correct tooth form is twisted, can make the second lock of password chip 3 lower ends The bead 34' breaks away from the second groove 13, and the second lock bead 34 at the upper end pushes the latched first bead 16 to be in the correct unlocking position. If the distance of pushing the password chip 3 is too short, the second bead at the lower end cannot be locked. 34' breaks away from the second groove 13, and if it is too long, the second locking bead 34 at the upper end will latch on the first groove 12 instead (as shown in FIG. 14 ), thereby correctly rotating the code chip 3 and the limiter 2 . As shown in Fig. 12 and Fig. 13, only the code chip 3 with the second locking bead 34 is arranged on the upper edge. When the key 6 with the correct tooth shape is twisted, the second locking bead 34 then pushes the latched first locking bead. The 16th position is in the correct unlocking position. Similarly, if the push stroke is too long, the second lock bead 34 at the upper end will be latched in the first groove 12 instead (as shown in FIG. 14 ), so the password chip can be rotated correctly thereby. 3 and Limiter 2. As for the spacer 4, because the groove 42 is not pushed by the active end 61 of the key 6, there will be no sliding action, and only the distance between each password chip 3 is maintained (as shown in Figure 15). It can be seen that only by taking the correct key 6 to twist, when all the code chips 3 slide to the unlocking position synchronously (as shown in Figure 16), can the code chips 3 and the limiter 2 be rotated to further achieve the unlocking function. If the password chip 3 does not match, the anti-theft state in the lock housing 1 can be maintained.

Also as shown in Figure 17, a stopper 7 can be sleeved at the end of the drum 5, the stopper 7 is provided with a through hole 71 matching the diameter of the drum 5, and a corresponding keyhole is provided on the inner wall of the through hole 71 52 of the protruding piece 72, and the two side walls 73 on the periphery of the limiting piece 7 each form a rhombus shape with two inclined planes, thus sleeved at the end of the drum 5, so that the protruding piece 72 is inserted into the cutaway groove 52' of the keyhole 52 (as shown in Figure 18). In this way, when the rotating cylinder 5 is driven by the key 6, the two side walls 73 of the limiting piece 7 can be used to push against the inner wall of the accommodating space 23 of the limiter 2 (as shown in Figure 19), so as to limit the rotating cylinder 5 in the lock. The angle of rotation in the shell 1 prevents excessive twisting when unlocking.

Claims (7)

1. A lock cylinder with multiple protection mechanisms, characterized in that the lock cylinder includes: A lock housing with a round hole, the inner wall of the round hole is provided with a corresponding first groove and a second groove extending axially, a row of radial locking bead holes are arranged in the first groove, and the locking bead holes are embedded Insert the elastic element and the first lock bead; A restrictor has two parallel limiting pieces, a connecting part is arranged between the two limiting pieces, a perforation is arranged in the center of the connecting part, and a container with two ends open is formed between the two limiting pieces. The space is installed, and the limit piece is rotatably installed in the round hole of the lock case; A plurality of cipher chips, each of which is a chip body with a through hole in the center, one or more inclined guide surfaces are provided on the selected side of the inner wall of the through hole, and protruding guide surfaces are selectively provided on two corresponding sides of the cipher chip periphery. The second lock bead; a plurality of cipher chips are arranged and installed in the accommodating space of the limiter, the second lock bead is latched in the second groove of the lock case, and the first lock bead in the lock case is connected with the second lock on one side bead top contact; A rotary cylinder is provided with a protruding ring with a larger diameter at the front end, and a keyhole extending axially is provided at the center of the protruding ring, and the rotary cylinder is passed through the through hole of the cipher chip. 2. The lock cylinder with multiple protection mechanisms as claimed in claim 1, characterized in that: the password chip is provided with a second lock bead on one side, and the second lock bead is latched with the first groove of the lock case, and makes The first locking bead is in contact with the second locking bead. 3. The lock cylinder with multiple protection mechanisms as claimed in claim 1, wherein a second locking bead is provided on one side of the code piece, and the second locking bead is latched with the second groove of the lock case. 4. The lock cylinder with multiple protection mechanisms as claimed in claim 1, characterized in that: the password chip is provided with a second lock bead on two corresponding sides, wherein a second lock bead is in contact with the first recess of the lock housing The groove is latched, and the first lock bead contacts with the second lock bead, and another second lock bead is latched with the second groove of the lock case. 5. The lock cylinder with multiple protection mechanisms as claimed in claim 1, characterized in that: there are a plurality of spacers, a through hole is arranged in the center of the spacer, an arc-shaped groove is arranged on the inner wall of the through hole, and the periphery of the spacer Parallel side walls are arranged on the two sides to match the accommodating space of the limiter, and a plurality of spacers are interposed between each code chip, and the multiple code chips are separated into a certain distance. 6. The lock cylinder with multiple protection mechanisms as claimed in claim 1, characterized in that: the height of the key hole of the rotating drum is greater than the diameter of the rotating drum, and the key hole forms an open slot in the rear section of the convex ring, and the rear of the rotating drum The end is provided with a radial perforation as a fixing part. 7. The lock cylinder with multiple protection mechanisms as claimed in claim 1, characterized in that: the end of the rotating cylinder is sleeved with a limit plate, the limit plate is provided with a through hole matching the diameter of the rotating cylinder, and the inner wall of the through hole is set There is a protruding piece corresponding to the keyhole, and the two side walls on the periphery of the limit piece each form a diamond shape with two slopes. The limit piece is sleeved at the end of the drum. Finally, it can be pressed against the inner wall of the accommodating space of the limiter.

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