WO2008131641A1

WO2008131641A1 - Antitheft lock core and the matching chain-type key

Info

Publication number: WO2008131641A1
Application number: PCT/CN2008/000798
Authority: WO
Inventors: Guipeng Ma; Suilai Wang; Yulong Zeng
Original assignee: Guipeng Ma
Priority date: 2007-04-27
Filing date: 2008-04-18
Publication date: 2008-11-06
Also published as: CN201040950Y

Abstract

An antitheft lock core (5) has a curved key passage (10), locking bead holes (20) and locking beads (3). The curved part of the key passage (10) is located close to the front part of the key orifice. The lock core (5) is made up of an upper lock core (11) and a lower lock core (12), both of which are of half-cylinder shape. The upper lock core (11) and the lower lock core (12) are fixedly connected to form a complete cylinder. The upper lock core (11) and the lower lock core (12) are respectively provided with one curved passage. The passages face each other and extend axially along the lock core (5). After the upper lock core (11) and the lower lock core (12) connect into one unit, the respective passages cooperate to form a key passage (10) into which the chain-type key inserts. The front end of the key passage (10) is provided with a hole section of the key casing (1) which matches with the rigid key casing (1) of the chain-type key used by the lock core (5). A matching chain-type key is also disclosed which cooperates with the lock core (5). The key transmits torque through the rigid key casing (1) so as to prevent the key from breaking in the key passage (10).

Description

Ballistic anti-theft lock cylinder and chain key used in the same

The utility model relates to a marble anti-theft lock core and a key for supporting the same, in particular to a chain type anti-theft lock core with a curved key hole and at the same time preventing the chain key from being broken in the key hole and the supporting chain key. Background technique

A large part of the design of the existing bullet lock is based on the shape of the keyhole, the distribution of the marbles and the matching key shape, but the keyhole of the lock cylinder is straight regardless of the shape of the keyhole and the distribution of the marbles. Correspondingly, the key is also a rigid straight strip. Although this type of improvement can improve the anti-theft function of the lock cylinder, such as: or increase the difficulty of the shackle, or improve the anti-drilling performance, etc., but For the unlocking expert, after studying the structural characteristics, instead of using the matching key, the general or special tools for unlocking can achieve the purpose of "opening" the lock. Therefore, the improved anti-theft lock of this type of anti-theft lock will gradually decrease as the time of the face increases.

However, in the early 1990s, there was a breakthrough in the design of the anti-theft lock, that is, the keyhole of the lock cylinder was curved, and the key used in conjunction with it must be changed to a flexible structure to allow the key to enter the bend. In the keyhole, in order to jack up the ball, the rotating lock cylinder is realized, thereby opening the bolt. Such as the Chinese invention patent ZL911054693 "a new type of structural lock core and its key", its main feature is that the lock core has a curved key hole, which can prevent the unlocking tool such as the master key from entering the marble area of the rear part of the keyhole, thus greatly Improve anti-theft performance. In order to realize the curved structure of the keyhole of the lock cylinder, the lock cylinder is assembled by split machining, that is, the lock core is composed of three bodies: left, right and bottom; the key must be designed as a chain structure to enable it to enter the curved shape. In the keyhole, the key is composed of a grip portion, a tooth holder, a tooth portion, a soft connecting device and a movable sleeve. The tooth portion is connected with a plurality of teeth in a flexible connecting device to form a flexible structure, and enters the curved keyhole as a key. Working segment. The downside is -

1. The key is easily broken in the keyhole, making the implementation of the lock unquestionable, resulting in the promotion of the invention for more than a decade. There are two reasons for this:

First, because the keyhole of the lock cylinder adopts a curved hole, on the one hand, when the key insertion hole lifts the marble and the lock core is rotated, the force on the key working section is uneven, and on the other hand, the key is operated. When the segment turns the lock cylinder, the local torque increases.

—I— Second, because the structural feature of the supporting key is that the working section is a flexible structure, the key tooth portion of the patent consists of a soft metal piece and a plurality of teeth connected in series, or a chain structure, which is hinged by a plurality of teeth. . When the key is inserted into the key cylinder hole, only the tooth portion of the key enters the key hole to form the working segment of the key. When the lock cylinder is rotated, the torque is transmitted by the tooth portion of the key, due to the flexible structure of the tooth itself. The overall stiffness and strength are weak, and the first point mentioned above causes the key to easily cause some local weaknesses in the process of transmitting torque. Therefore, it is extremely easy to break the key in the key. In the tunnel, the lock cylinder is scrapped.

2, its anti-theft effect is not enough. Because the keyhole of the patent cylinder is designed with a curved section at the front end and a marble section at the rear, it is still possible to use a locking tool with a certain degree of flexibility such as a wire to overcome the obstacle of the curve and will be located at the rear of the keyhole. The marbles opened, and then the purpose of unlocking was achieved. Therefore, although it improves the anti-theft function of the lock cylinder, it only greatly improves the difficulty of unlocking, and its anti-theft effect is not thorough enough.

3. The design of the lock core structure is complicated, resulting in an increase in cost. Since the design of the patented lock cylinder structure is composed of three bodies of left, right and bottom, the three bodies are combined into a lock cylinder by the coupling element, and the joint lines of the two left and right lock cylinders are subject to the curved keyhole, which affects on the one hand The overall strength of the lock cylinder; on the other hand, the lock core structure is too complicated, making it difficult to process in the process, high assembly quality requirements, resulting in high processing costs.

4. The end of the open end of the lock cylinder is equipped with a fixing member for fixing the key. The fixing member and the lock cylinder adopt a split design structure, which may cause wear of the fixing member during long-term use.

5. The lock cylinder is not equipped with anti-drilling components. When the lock cylinder is subjected to the malicious drilling of the impact drill, it is easy to drill the lock cylinder and make the lock core break and lose its function. Summary of the invention

The first object of the present invention is to provide a marble anti-theft lock core with high anti-theft property, the lock core has a key coat hole adapted to the key cover of the chain key, and the key coat is inserted into the key ring of the lock core When the hole is rotated, the opening of the lock cylinder is realized.

The above object of the present invention is achieved by the following technical solutions: A marble anti-theft lock core with high anti-theft property, the lock core has a curved key hole, a lock bead hole and a lock bead, wherein the curved section of the key hole is located close to The front part of the key opening is characterized in that the lock core is composed of a semi-cylindrical upper locking core and a lower locking core, and the upper locking core and the lower locking core are fixedly connected to form a complete cylindrical shape, and the upper locking core And each of the lower lock cores is provided with a correspondingly curved hole extending along the axial direction of the lock core corresponding to the lock core, and the upper lock core and the lower After the lock cylinders are integrally connected, the respective holes are combined into a key hole for inserting the chain key; the front end of the key hole is provided with a key cover hole section, and the key cover hole section is matched with the chain of the lock core The key's rigid key jacket fits.

When the chain key enters the keyhole under the action of the thrust, the tooth of the key pushes up the lock bead in the bead hole, and the lock core is in a freely rotatable state, and at the same time, the rigid key cover enters the lock core and is matched with the lock core. Inside the key casing hole, turn the key jacket, and the lock cylinder rotates under the torque of the key coat to unlock.

The front end portion of the lower cylinder of the semi-cylindrical body of the utility model is provided with a cylindrical rotating head, and is integrated with the semi-cylindrical body of the lower lock core, so that the axial section of the lower lock core is "L" shaped a cylindrical body formed by connecting the semi-cylindrical portion of the lower lock core to the upper lock core and a rotating head of the front end of the lower lock core constitute a complete cylinder core, and the key cover hole at the front end of the keyhole is disposed at The rotating core of the lower lock core is inside.

The rotating head has a certain thickness. Since the rotating head is a component of the lower locking core, the key casing enters the hole of the key casing. During the rotation of the rotating head, the lower locking core has a better ability to carry torque, and the lock is guaranteed. The core has a longer life.

In order to strengthen the anti-theft function of the lock cylinder of the present invention, the curved section of the keyhole of the lock cylinder is two curved "S" curve sections. The keyhole in the prior art only has one bending part. Although it has certain anti-theft capability, the safety cannot be guaranteed. The utility model adopts two or more bending parts, which makes it difficult for the thief to pass the steel wire. The tool will open the lock bead, which greatly improves the anti-theft function of the mechanical bullet lock.

The key hole of the utility model has straight holes at both ends, wherein the inlet end of the hole is a straight key coat hole, and the curved section of the key hole is a smooth circular arc hole for the chain key tooth The entry of the grain.

The lock cylinder of the utility model further has at least one anti-drilling steel ball hole opened on the inner side of the bending section of the key hole of the lock core, which is located on the center line of the maximum radius of curvature of the bending part . The lock core in the prior art does not have the anti-drilling function, and the lock core is damaged after being maliciously damaged by the impact drill. The lock core of the utility model has the anti-drilling steel ball hole, and the anti-drill steel ball hole is installed in the anti-drilling steel ball hole. When the drill bit of the impact drill hits the anti-drilling steel ball, the anti-drilling steel ball will destroy the drill bit and invalidate the impact drill.

The anti-drilling steel ball hole of the utility model is opened in the locked core, and can also be opened in the lower lock core. In order to prevent the drill-proof function of the strong lock core, a plurality of anti-drilling steel ball holes can be opened in the lock core, and a plurality of anti-drilling steel balls are arranged, so that the lock core has a stronger anti-drilling function. A second object of the present invention is to provide a chain key for use with the above-described lock cylinder, which transmits torque through a rigid key housing to prevent the key from being interrupted in the keyhole during rotation.

The above object of the present invention is achieved by the following technical solution: A chain key having a key handle portion and a tooth portion, wherein the tooth portion is sequentially connected in series by a tooth root and a plurality of flexible structures constituting the tooth portion The tooth composition, the tooth at the end of the tooth is connected to the root, wherein the key handle portion is composed of a key cover and a key sliding handle, and the key cover is a rigid elongated body having a tooth portion a cavity that is inserted into the cavity, the cavity is adapted to the tooth portion, and a symmetric pin chute is further formed on the two side walls of the key casing along the axis; the key sliding handle is a block body and is open for use a slideway through which the key coat passes, through which the key slide handle is placed on the key coat, and the key slide handle is connected to the tooth root of the tooth located in the key coat through the pin chute on the key coat by the pin, the key The sliding handle drives the tooth to slide within the cavity of the key casing during sliding along the key casing.

The chain key of the utility model pushes the key sliding handle to hide the tooth of the key in the key jacket when the key is unlocked without using a key; when the unlocking is needed, the key sliding handle is pushed, and the tooth root of the tooth is pushed at this time The tooth particles in series enter the keyhole of the lock cylinder, and the tooth particles open the corresponding lock cylinder of the lock cylinder. At this time, the front end of the key jacket also enters the key sleeve hole corresponding to the front end of the lock cylinder, and rotates the key sliding handle. , the key case is rotated, and the lock core is rotated by the torque of the key cover to realize the opening of the lock cylinder.

The key cover of the utility model can be made of zinc alloy or stainless steel, or can be made of engineering plastic with high strength. Since the torque transmission is completed by the key coat during the unlocking process, the key is The jacket should have a high strength.

The sliding door of the key sliding handle of the utility model, the key housing, the cavity of the key housing and the tooth portion of the key are all flat structures, so as to satisfy the installation requirements between the parts on the one hand, and on the other hand Transfer torque.

In the utility model, the tooth particles of the key have a convex connecting head and a concave connecting groove in the same direction along the axial direction of the tooth portion, and the connecting groove and the connecting groove respectively connect the connecting groove and the connecting head of the adjacent tooth particles. The hinged shaft is axially perpendicular to the long-chain tooth portion, and forms a long-chain key tooth portion. The tooth particles at both ends of the tooth portion have only one connecting head or connecting groove, wherein the tooth at the end is hinged to the tooth root of the tooth portion. The tooth at the front end has a tapered shape as a tip end of the key tooth.

The tooth has a cross-sectional shape of a "convex" shape, a thicker portion at the lower portion is a portion where the hinge shaft is disposed, and a thinner portion at the upper portion is a tooth portion provided with a high and low offset for contact with the lock bead. Compared with the prior art, the utility model has the following remarkable effects:

1. The chain key of the utility model has a rigid key jacket, the lock core has a key jacket hole adapted to the key jacket, and the key jacket hole and the key hole pass through, and the key jacket inserts the key during the unlocking process. In the hole of the jacket, the torque is transmitted by the rotation of the rigid key casing, and the tooth of the key only functions to open the locking bead, no need to transmit torque, and the traditional chain key needs to use the weak key to transmit the torque. In this case, the phenomenon that the key is easily broken in the hole of the key casing and the service life of the key and the lock cylinder are prolonged.

2. The keyhole of the utility model has two continuous bending portions, and has better anti-theft function. 3 The lock cylinder of the utility model is composed of a lock core and a lower lock core, has a simple structure, good alignment in the processing process, and good workmanship.

4. The lower core of the lock cylinder of the utility model also has a rotating head, and the rotating head and the semi-cylindrical main body of the lower lock core are integrally formed, since the rotating head is a part of the lower locking core, when the key is turned through the key casing When the core rotates the head, it is easy to drive the lock cylinder to rotate, which can transmit torque better.

5. The lock cylinder of the utility model is provided with one or more anti-drilling steel ball holes, and the anti-drilling steel ball holes are provided with anti-drilling steel balls. When the lock core is subjected to the malicious drilling of the impact drill, the anti-drilling steel ball will destroy the impact drill. The drill bit makes it ineffective and improves the anti-drilling function of the lock cylinder. DRAWINGS

The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

Figure 1 is a cross-sectional view of the key and lock core exploded structure of the present invention;

Figure 2 is a cross-sectional view of the key and lock core assembly structure of the present invention;

Figure 3 is a cross-sectional view taken along line A - A of Figure 2;

Figure 4 is a cross-sectional view of another angle of the key and lock cylinder assembly structure of the present invention;

Figure 5 is a cross-sectional view taken along line B-B of Figure 4 (without the key portion);

Figure 6 is a cross-sectional view taken along line C-C of Figure 4 (without the key portion);

Figure 7 is a schematic view showing the overall structure of the lock cylinder of the present invention;

Figure 8 is a cross-sectional view showing the overall structure of the lock cylinder of the present invention;

Figure 9 is a structural view of the upper lock core of the present invention;

Figure 10 is a cross-sectional view taken along line D_D of Figure 9;

Figure 11 is a front view of the lower lock core of the present invention; Figure 12 is a right side view of the lower lock core of the present invention;

Figure 13 is a schematic view showing the overall structure of the key in the present invention;

Figure 14 is a cross-sectional view showing the overall structure of the key of the present invention;

Figure 15 is a cross-sectional view showing the overall structure of the key at another angle in the present invention;

Figure 16 is a view showing the parts of the tooth of the key in the present invention.

Description of the reference numerals

1 key coat; 2 key sliding handle; 3 lock beads; 4 spring; 5 lock core; 6 lock core coat; 7 tooth root; 8 snap ring; 9 positioning steel ball; 10 key hole; 11 lock core; 121 rotating head; 13 cavity; 14 hinged shaft; 15 fixing pin; 16 spring cover; 17 tooth; 171 connecting head; 172 connecting groove; 18 anti-drilling steel hole; 19 key casing hole; Implementation

The lock cylinder 5 shown in Figs. 1 to 6 and the chain key used therein, when the chain key and the lock cylinder 5 are used together, push the key sliding handle 2 to push the tooth 17 into the key of the lock cylinder 5 In the tunnel 10, the tooth particles 17 open the corresponding locking bead 3 of the lock cylinder 5, and the lock cylinder 5 is in a freely rotatable state. At this time, the front end of the key outer casing 1 also enters the key outer casing 1 corresponding to the front end of the lock cylinder 5 In the hole, the key sliding handle 2 is rotated to drive the key housing 1 to rotate. At this time, the key cylinder 5 is rotated by the torque of the key housing 1 to realize the opening of the key cylinder 5.

As shown in FIG. 7 to FIG. 12, the lock cylinder 5 has a curved key hole 10, a lock bead hole 20 and a lock bead 3, and the lock bead 3 is installed in the lock bead hole 20, and the curved hole 10 is bent. Located at the front section near the keyhole, the curved section of the keyhole 10 of the lock cylinder 5 is two curved "S" corner sections, and the curved section of the keyhole 10 is a smooth circular arc path for the chain key. In the entry of the tooth particles 17, the lock cylinder 5 is composed of a semi-cylinder upper locking core 11 and a lower lock core 12, and a front end portion of the semi-cylindrical lower locking core 12 is provided with a cylindrical rotating head 121, and The semi-cylindrical body of the lock cylinder 512 is integrated, so that the axial cross section of the lower lock core 12 is "L"-shaped, and the cylinder and the lower lock core 12 formed by the semi-cylindrical portion of the lower lock core 12 and the upper lock core 11 are connected. The rotating head 121 of the front end constitutes a complete cylinder core, and the upper core 11 and the lower core 12 are fixedly connected to form a complete cylindrical shape. The keyhole 1 of the front end of the keyhole 10 is disposed in the rotating head 121 of the lower core 12. The upper core 11 and the lower core 12 are respectively provided with a curved section corresponding to each other and extending axially along the lock cylinder 5 After the upper core 11 and the lower core 12 are integrally connected, the respective holes are combined into a key hole 10 for inserting the chain key; the front end of the key hole 10 is provided with a hole 1 hole. In the segment, the keyhole 1 hole section is matched with the rigid key coat 1 of the chain key used for the lock cylinder 5. The upper lock cylinder 11 is further provided with two anti-drilling steel ball holes 18 which are open on the inner side of the bent portion of the key hole 10 of the upper lock core 11 at the maximum radius of curvature of the bent portion. On the center line, anti-drilling steel balls are installed in the anti-drilling steel ball hole 18.

A chain key as shown in FIGS. 13 to 16 has a key handle portion and a tooth portion, wherein the tooth portion is composed of a tooth root 7 and a plurality of tooth particles 17 which are sequentially connected in series to form a tooth flexible structure, the teeth of the key The pellets 17 have a convex joint 171 and a concave connecting groove 172 in the same direction along the axial direction of the tooth portion. The cross-sectional shape of the tooth particles 17 is a "convex" shape, and the thicker portion at the lower portion is a portion where the hinge shaft 14 is disposed. The thinner portion of the upper portion is a toothed portion which is provided for contact with the lock bead 3, and the joint 171 and the joint groove 172 are respectively hinged with the joint groove 172 of the adjacent tooth granule 17 and the joint head 171, and the hinge shaft 14 is perpendicular to the axial direction of the long-chain tooth portion, and forms a long-chain key tooth portion. The tooth particles 17 at both ends of the tooth portion have only one connecting head 171 or a connecting groove 172, wherein the tooth particles 17 at the end and the tooth root of the tooth portion 7 Articulated, the tooth particles 17 at the front end have a tapered shape as the end of the key tooth.

The key handle portion is composed of a key outer casing 1 and a key sliding handle 2, which is a rigid elongated body made of zinc alloy, having a cavity 13 through which the teeth can penetrate, the cavity 13 and the tooth portion being suitable And a symmetrical pin chute is further disposed on the two side walls of the key casing 1 along the axis; the key sliding handle 2 is a block body, and a slide path through which the key coat 61 passes is opened, and the key is passed through the slide The sliding handle 2 is placed on the key outer casing 61, and the key sliding handle 2 is connected to the tooth root 7 of the tooth portion located in the key outer casing 1 through the pin chute on the key outer casing 1 by the fixing pin 15, and the key sliding handle 2 is along the key During the sliding of the outer sleeve 61, the toothed portion is slid in the cavity 13 of the key outer casing 1.

The slide of the key slide handle 2 described above, the key cover 1, the cavity 13 of the key outer cover 1, and the tooth portion of the key are all flat.

Claims

Rights request

1. A high-security anti-theft anti-theft lock cylinder having a curved keyhole, a lock bead hole and a lock bead, wherein the curved section of the keyhole is located near the front end of the keyhole, and is characterized by: The lock cylinder is composed of a semi-cylinder upper lock core and a lower lock core, and the upper lock core and the lower lock core are fixedly connected to form a complete cylindrical shape, and the upper lock core and the lower lock core are respectively provided with corresponding to each other. a hole having a curved section extending along the axial direction of the lock core. After the upper lock core and the lower lock core are integrally connected, the respective holes are combined into a key hole for inserting the chain key; the front end portion of the key hole is disposed A section of the keyhole, the keyhole section is adapted to the rigid keycap of the chain key used with the lock cylinder.

2. The anti-theft lock cylinder with high anti-theft property according to claim 1, wherein: the front end portion of the lower cylinder of the semi-cylindrical body is provided with a cylindrical rotating head, and the lower lock core The semi-cylindrical body is integrated, so that the axial section of the lower lock core is "L"-shaped, the cylinder formed by the semi-cylindrical portion of the lower lock core is connected with the upper lock core and the rotation of the front end of the lower lock cylinder The head constitutes a complete cylinder core, and a key casing hole at the front end of the keyhole is disposed in the rotating head of the lower cylinder.

3. The anti-theft lock cylinder with high anti-theft property according to claim 1, wherein: the curved section of the keyhole of the lock cylinder is two curved "S" curve segments.

4. The anti-theft lock cylinder with high anti-theft property according to claim 3, wherein - the curved section of the keyhole is a smooth circular arc passage to facilitate entry of the chain key.

5. The anti-theft lock cylinder with high anti-theft property according to claim 3, wherein: the lock cylinder further has at least one anti-drilling steel ball hole, and the anti-drilling steel ball hole is locked in the key of the lock core The inner side of the bent section of the tunnel is located on the center line of the maximum radius of curvature of the bent portion.

6. A chain key matched with a lock cylinder according to any one of claims 1 to 5, having a key handle portion and a tooth portion, wherein the tooth portion is composed of a root and a plurality of sequential strings constituting the flexible structure of the tooth portion The tooth is composed of a tooth, and the tooth at the end of the tooth is connected to the root, wherein: the key handle portion is composed of a key cover and a key sliding handle, and the key cover is a rigid elongated body having a cavity for the tooth portion to be inserted into, the cavity and the tooth portion are matched, and a symmetric pin chute is further formed on the two side walls of the key casing along the axis; the key sliding handle is a block body, open There is a slideway through which the key coat can pass, through which the key slide handle is placed on the key coat, and the key slide handle passes through the pin through the pin chute on the key coat. Connected to the root of the tooth located in the key casing, the key sliding handle drives the tooth to slide in the cavity of the key casing during sliding along the key casing.

7. A chain key according to claim 6, wherein: said key casing is made of a zinc alloy or a stainless steel material.

8. A chain key according to claim 7, wherein: the slide of the key slide handle, the key cover, the cavity of the key cover, and the tooth portion of the key are flat structures.

9. A chain key according to claim 6, wherein: the tooth particles of the key have a convex connector and a concave connecting groove in the same direction along the axial direction of the tooth portion, the connector and the connector The connecting groove is respectively hinged with the connecting groove and the connecting head of the adjacent tooth particles, and the hinge shaft is axially perpendicular to the long chain tooth portion, forming a long chain type key tooth portion, and the tooth particles at both ends of the tooth portion have only one connecting head or The connecting groove, wherein the tooth at the end is hinged to the root of the tooth, and the tooth at the front end has a tapered shape as a tip end of the key tooth.

The chain key according to claim 9, wherein: the tooth has a cross-sectional shape of a convex shape, a thicker portion of the lower portion is a portion where the hinge shaft is disposed, and a thinner portion of the upper portion is a portion. A high and low profiled toothed portion for contact with the locking bead is provided.