High-strength combination of anti-theft padlock and key

Abstract

The utility model discloses a high-strength anti-theft padlock and key combination, which comprises a padlock and a key, the key comprises a key handle and a key head, the key handle is provided with a battery jar and a protective cover, a button battery is installed in the battery jar, the button battery is electrically connected with an electromagnet, the key head is provided with a groove, a contact switch is arranged in the groove, and the contact switch is electrically connected with the electromagnet. The control module is used for controlling electromagnet energization; the padlock comprises a lock body, a lock beam and a lock cylinder. A lock tongue is arranged above the lock cylinder; a sliding groove A is eccentrically formed in the top face of the lock cylinder, and the sliding groove A and the groove are complementary in shape. A sliding groove B matched with the sliding groove A is formed in the bottom face of the spring bolt. A magnetic block is arranged in the sliding groove A. A sliding groove C is formed in the contact position of the bottom face of the spring bolt and the inner wall of the lock body, a sliding groove D matched with the sliding groove C is formed in the inner wall of the lock body, and a positioning pin is arranged in the sliding groove D. The anti-theft padlock has the advantages that the anti-theft function of the padlock is enhanced, and the maintenance cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lockset, especially a combination of high-strength anti-theft padlock and key. BACKGROUND

[0002] As a common security device, padlocks are widely used in various scenes such as family, business and industry. In the existing technology, for example, the utility model patent with publication number CN219931901U discloses an anti-theft padlock, which achieves the effect of theft prevention through the ball structure. The main protection measure of the anti-theft padlock is the cooperation of the lock cylinder and the key. The correct key tooth shape matches the ball of the lock cylinder and makes the ball in the unlocking position. The lock cylinder can be turned by the key to open the lock. Although the anti-theft padlock can provide basic security protection in daily life, when facing a lock-picking tool, the lock-picking tool can also match the ball in the lock cylinder and turn the lock cylinder to open the lock. The anti-theft function of the anti-theft padlock is not satisfactory. Therefore, the existing anti-theft padlock has the problem of poor anti-theft effect in the use process. SUMMARY

[0003] The utility model aims to provide a combination of high-strength anti-theft padlock and key, which can enhance the anti-theft function of the padlock.

[0004] The utility model discloses a combination of high-strength anti-theft padlock and key, which comprises a padlock and a key. The key comprises a key handle and a key head. The key handle is provided with a battery slot and a protective cover. A button cell is installed in the battery slot. An electromagnet is electrically connected to the button cell. The electromagnet is arranged from the key handle to the key head. The end of the key head is provided with a groove. A contact switch is arranged in the groove and connected in series with the electromagnet. The padlock comprises a lock body, a lock beam and a lock cylinder. The lock body is internally provided with a lock cylinder hole for installing the lock cylinder. A lock tongue is arranged above the lock cylinder. The left end of the lock tongue is connected to the inner wall of the lock body through a spring. An eccentric protrusion is arranged on the top surface of the lock cylinder. The protrusion is downwardly protruding. A sliding groove A is arranged on the top surface of the protrusion. The shape of the protrusion and the groove is complementary. A sliding groove B is arranged on the bottom surface of the lock tongue and matched with the sliding groove A. A magnetic block is arranged in the sliding groove A. The depth of the sliding groove A is greater than the length of the magnetic block. The length of the magnetic block is greater than the depth of the sliding groove B. A sliding groove C is arranged at the contact position between the bottom surface of the lock tongue and the inner wall of the lock body. A sliding groove D is arranged on the inner wall of the lock body and matched with the sliding groove C. A positioning pin is arranged in the sliding groove D. The depth of the sliding groove D is greater than the length of the positioning pin. The length of the positioning pin is greater than the depth of the sliding groove C. The magnetic pole on the bottom surface of the magnetic block is the same as the magnetic pole close to the end of the key head when the electromagnet is electrified. The magnetic field intensity of the electromagnet can push up the magnetic block and make it clamped into the sliding groove B.

[0005] The combination of the high-strength anti-theft padlock and the key has the characteristics that: the inner wall of the lock core hole is provided with a plurality of pin springs in staggered distribution, each pin spring is connected with a left pin; the lock core is provided with a pin hole corresponding to the left pin, and the pin hole is provided with a right pin matched with the left pin; the staggered pin structure provides an anti-theft effect.

[0006] The combination of the high-strength anti-theft padlock and the key has the characteristics that: the key head is columnar, the end of the key head is chamfered, and the surface of the key head is provided with a hole matched with the right pin; the end of the key head is S-pole after the electromagnet is electrified, and the bottom end of the magnetic block is S-pole.

[0007] The combination of the high-strength anti-theft padlock and the key has the characteristics that: the lock tongue and the lock core are made of non-magnetic material, and the non-magnetic material does not interfere with the movement of the magnetic block.

[0008] The combination of the high-strength anti-theft padlock and the key has the characteristics that: the lock beam is provided with a clamping section and a rotating section, the head of the clamping section is provided with a clamping hole, the right end of the lock tongue is matched and clamped with the clamping hole; the lock body is provided with a lock beam groove corresponding to the position of the lock beam, the inner bottom surface of the lock beam groove is provided with a lock beam spring, and the top surface of the lock beam spring is fixedly connected with the rotating section, so that the fastening of the lock beam and the lock body is facilitated.

[0009] Compared with the prior art, the utility model provides a novel combination of anti-theft padlock and key, design the electromagnet and button cell of key inside, the recess and recess contact switch in the key head end is equipped with, contact switch and electromagnet series connection, contact switch is in the off state when key is not inserted into lock core, avoid the waste of electric quantity, prolong the use time of button cell, reduce maintenance cost, key is inserted into lock core, convex block presses contact switch, make electromagnet electrification produce magnetic field, electromagnet electrification is close to the magnetic field of key head one end and the magnetic pole repulsion of magnetic block bottom, through magnetic force promotes magnetic block and makes magnetic block top and slide groove B card connection, but because the length of magnetic block is greater than the depth of slide groove B, the bottom of magnetic block is still in slide groove A, and slide groove A is eccentric arrangement, at this time, rotating key rotates lock core can drive magnetic block to rotate together, magnetic block drives lock tongue to left displacement and opens lock; when using lock picking tool or wrong key, magnetic block and slide groove B cannot be connected, and the lock cannot be opened when the lock core is rotated, which enhances the anti-theft performance of the anti-theft padlock. The positioning pin structure is arranged, when the lock is inverted and picked, the top end of the positioning pin is clamped into the slide groove C, the length of the positioning pin is greater than the depth of the slide groove C, and the bottom end of the positioning pin is still in the slide groove D; because the movement of the lock tongue is limited by the positioning pin, the lock cannot be picked, and the anti-theft function is further enhanced. In addition, the pin structure in the lock core is staggered, which increases the difficulty of picking the lock; the key head is columnar, and the key head is chamfered, which facilitates the insertion of the key into the lock core.

[0010] Therefore, the anti-theft function of the anti-theft padlock is enhanced, and the padlock has the advantages of low maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a structure diagram of the padlock;

[0012] Figure 2 is a structure diagram of the key;

[0013] Figure 3 is a sectional view of the key;

[0014] Figure 4 is a schematic diagram when the padlock and the key are connected;

[0015] Figure 5 is a structure diagram of the lock core;

[0016] Figure 6 is Figure 1 is an enlarged view of A in FIG. 4;

[0017] Figure 7 is Figure 4 is an enlarged view of B in FIG. 4.

[0018] The marks in the drawings are: 1-battery groove, 2-protection cover, 3-disk battery, 4-electromagnet, 5-groove, 6-contact switch, 7-lock body, 8-lock beam, 9-lock core, 10-lock core hole, 11-lock tongue, 12-bump, 13-slots A, 14-slots B, 15-magnetic block, 16-slots C, 17-slots D, 18-positioning pin, 19-tumbler spring, 20-left tumbler, 21-tumbler hole, 22-right tumbler, 23-clamping section, 24-rotating section, 25-clamp, 26-lock beam slot, 27-lock beam spring. DETAILED DESCRIPTION

[0019] Embodiment. A high-strength anti-theft padlock and key combination, consisting of Figures 1 to 7As shown, including padlock and key, the key includes key handle and key head; the key handle is provided with battery slot 1 and protective cover 2, the battery slot 1 is provided with button cell 3, the button cell 3 is electrically connected with electromagnet 4, the electromagnet 4 is arranged from the key handle to the key head; the key head end is provided with recess 5, the recess 5 is provided with contact switch 6 connected with the electromagnet 4; the padlock includes lock body 7, lock beam 8 and lock cylinder 9; the lock body 7 is internally provided with lock cylinder hole 10 for installing the lock cylinder 9, the lock cylinder 9 is provided with lock tongue 11 above, the left end of the lock tongue 11 is connected with the inner wall of the lock body 7 through spring; the top surface of the lock cylinder 9 is eccentrically provided with downward protruding lug 12, the top surface of the lug 12 is provided with sliding groove A 13, the lug 12 and the recess 5 are complementary in shape; the bottom surface of the lock tongue 11 is provided with sliding groove B 14 matched with the sliding groove A 13, the sliding groove A 13 is provided with magnetic block 15, the depth of the sliding groove A 13 is greater than the length of the magnetic block 15, and the length of the magnetic block 15 is greater than the depth of the sliding groove B 14; the bottom surface of the lock tongue 11 is provided with sliding groove C 16 at the contact position with the inner wall of the lock body 7, the inner wall of the lock body 7 is provided with sliding groove D 17 matched with the sliding groove C 16, the sliding groove D 17 is provided with positioning pin 18, the depth of the sliding groove D 17 is greater than the length of the positioning pin 18, and the length of the positioning pin 18 is greater than the depth of the sliding groove C 16; the magnetic pole of the bottom surface of the magnetic block 15 is the same as the magnetic pole close to the one end of the key head after the electromagnet 4 is electrified; the magnetic field intensity after the electromagnet 4 is electrified can push up the magnetic block 15 and clamp into the sliding groove B 14.

[0020] The inner wall of the lock cylinder hole 10 is provided with a plurality of pin springs 19 distributed in staggered manner, each pin spring 19 is connected with left pin 20; the lock cylinder 9 is provided with pin hole 21 corresponding to the position of the left pin 20, the pin hole 21 is provided with right pin 22 matched with the left pin 20. The key head is columnar, the key head end is chamfered, and the key head surface is provided with hole position matched with the right pin 22; the key head end is S pole after the electromagnet 4 is electrified, and the bottom end of the magnetic block 15 is S pole. The lock tongue 11 and the lock cylinder 9 are made of non-magnetic material. The lock beam 8 is provided with clamping section 23 and rotating section 24, the clamping section 23 is provided with bayonet 25 at the head, and the right end of the lock tongue 11 is matched and clamped with the bayonet 25; the lock body 7 is provided with lock beam groove 26 corresponding to the position of the lock beam 8, the bottom surface of the lock beam groove 26 is provided with lock beam spring 27, and the top surface of the lock beam spring 27 is fixedly connected with the rotating section 24.

[0021] Working principle: When the lock is placed upright, the positioning pin 18 is kept in the sliding groove D17; when the correct key is inserted into the lock cylinder 9, the groove 5 on the key is aligned with the protrusion 12 to be clamped, the hole position on the key head matches the right ball 22, the right ball 22 pushes the left ball 20 and the ball spring 19 to adjust the position, so that the connection between the right ball 22 and the left ball 20 is located between the gap between the lock cylinder 9 and the lock body 7, at this time the key can rotate the lock cylinder 9; the protrusion 12 presses the contact switch 6, so that the electromagnet 4 and the button cell 3 form a loop, the electromagnet 4 generates a magnetic field when electrified, the magnetic pole of the electromagnet 4 near the end of the key head is S pole, the magnetic pole of the magnetic block 15 at the bottom end is S pole, the two magnetic poles repel each other, according to the formula of electromagnetic force calculation B=μ0*I*N / L (B is the magnetic field strength, μ0 is the constant of magnetic flux in vacuum, I is the current intensity through the wire, N is the number of turns of the coil, L is the length of the electromagnet), the electromagnet 4 arranged can push the magnetic block 15 and make the top end of the magnetic block 15 clamped with the sliding groove B14, the length of the magnetic block 15 is greater than the depth of the sliding groove B14, and the bottom end of the magnetic block 15 is still in the sliding groove A13; At this time, the key rotates the lock cylinder 9, the lock cylinder 9 drives the magnetic block 15, and the magnetic block 15 drives the lock tongue 11 to translate left to open the lock. When the lock is placed upright, the lock picking tool is used to pry the lock cylinder 9, the magnetic block 15 is not affected by the magnetic force, the top end of the magnetic block 15 is not clamped with the sliding groove B14, at this time the lock cylinder 9 can only rotate to make the lock cylinder 9 idle and cannot open the lock. When the lock is inverted, the positioning pin 18 is clamped with the sliding groove C16 at the top end under the action of gravity, the lock picking tool is used to pry the lock cylinder 9, although the top end of the magnetic block 15 is clamped with the sliding groove B14 under the action of gravity, but the positioning pin 18 limits the position of the lock tongue 11, so that the lock tongue 11 cannot be displaced, the lock picking tool cannot rotate the lock cylinder 9 and cannot open the lock.

Claims

1. A combination of a high security anti-theft padlock and a key comprising a padlock and a key, characterized in that: The key comprises a key handle and a key head; the key handle is provided with a battery slot (1) and a protective cover (2), a button cell (3) is installed in the battery slot (1), an electromagnet (4) is electrically connected to the button cell (3), and the electromagnet (4) is arranged from the key handle to the key head; the end of the key head is provided with a groove (5), and a contact switch (6) connected in series with the electromagnet (4) is arranged in the groove (5); the padlock comprises a lock body (7), a lock beam (8) and a lock cylinder (9); the inside of the lock body (7) is provided with a lock cylinder hole (10) for installing the lock cylinder (9), a lock tongue (11) is arranged above the lock cylinder (9), and the left end of the lock tongue (11) is connected to the inner wall of the lock body (7) through a spring; the top surface of the lock cylinder (9) is eccentrically provided with a downward protruding protruding block (12), the top surface of the protruding block (12) is provided with a sliding groove A (13), and the protruding block (12) and the groove (5) are complementary in shape; the bottom surface of the lock tongue (11) is provided with a sliding groove B (14) matched with the sliding groove A (13), a magnetic block (15) is arranged in the sliding groove A (13), the depth of the sliding groove A (13) is greater than the length of the magnetic block (15), and the length of the magnetic block (15) is greater than the depth of the sliding groove B (14); the bottom surface of the lock tongue (11) is provided with a sliding groove C (16) at the contact position with the inner wall of the lock body (7), the inner wall of the lock body (7) is provided with a sliding groove D (17) matched with the sliding groove C (16), and a positioning pin (18) is arranged in the sliding groove D (17); the depth of the sliding groove D (17) is greater than the length of the positioning pin (18), and the length of the positioning pin (18) is greater than the depth of the sliding groove C (16); the magnetic pole of the bottom surface of the magnetic block (15) is the same as the magnetic pole close to the end of the key head after the electromagnet (4) is electrified; the magnetic field intensity of the electromagnet (4) after being electrified can push up the magnetic block (15) and make it clamped into the sliding groove B (14).

2. A high security combination padlock and key combination as defined in claim 1 wherein: The inner wall of the lock cylinder hole (10) is provided with a plurality of pin springs (19) distributed in a staggered manner, and each pin spring (19) is connected with a left pin (20); the lock cylinder (9) is provided with a pin hole (21) corresponding to the position of the left pin (20), and the pin hole (21) is provided with a right pin (22) matched with the left pin (20).

3. A high security combination padlock and key combination as defined in claim 1 wherein: The key head is columnar, the end of the key head is chamfered, and the surface of the key head is provided with a hole position matched with the right pin (22); the end of the key head is S-pole after the electromagnet (4) is electrified, and the bottom end of the magnetic block (15) is S-pole.

4. The combination of a high security padlock and key according to claim 1 wherein: The lock tongue (11) and the lock cylinder (9) are made of non-magnetic material.

5. A high security combination padlock and key combination as claimed in any one of claims 1 to 4 wherein: The lock beam (8) is provided with a clamping section (23) and a rotating section (24), the head of the clamping section (23) is provided with a bayonet (25), the right end of the lock tongue (11) is matched and clamped with the bayonet (25); the lock body (7) is provided with a lock beam groove (26) corresponding to the position of the lock beam (8), the inner bottom surface of the lock beam groove (26) is provided with a lock beam spring (27), and the top surface of the lock beam spring (27) is fixedly connected with the rotating section (24).

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