CN215978902U

CN215978902U - Anti-damage padlock

Info

Publication number: CN215978902U
Application number: CN202122187468.4U
Authority: CN
Inventors: 李谋政
Original assignee: ABA UFO International Corp
Current assignee: ABA UFO International Corp
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-03-08
Anticipated expiration: 2031-09-10

Abstract

The utility model relates to an anti-damage padlock, which comprises a base, a fastener, two anti-sawing sleeves, a bead body and a locking mechanism. The base has a mounting channel with an annular groove on its inner surface. The fastener can be rotatably combined with the base and is provided with two straight line sections. The second sawing-resistant sleeve can be arranged in the mounting channel in a rotating and axial moving manner and is provided with a bead hole. The bead is arranged in the second anti-sawing sleeve and can protrude out of the bead hole. The locking mechanism under the locking state enables the bead body to protrude out of the bead hole to be clamped with the ring groove, so that the second sawing-proof sleeve cannot move, and the fastener cannot be separated from the second sawing-proof sleeve. The two sawing-proof sleeves can be respectively sleeved on the two straight line sections in a rotating manner, so that the sawing-proof sleeves are not easy to be sawed, and the anti-theft effect is better. The locking mechanism enables the bead body not to protrude out of the bead hole in the unlocking state, and the second sawing-proof sleeve can move to the position where the second straight-line section is not sleeved, so that the fastener can be pivoted and opened.

Description

Anti-damage padlock

Technical Field

The present invention relates to a lock, and more particularly, to a padlock with a saw-proof function.

Background

The padlock includes one long strip U-shaped fastener for hooking the locked matter, and one lock seat capable of being fitted to two ends of the U-shaped fastener and locked to prevent the locked matter from separating from the U-shaped fastener.

However, in the prior art padlock, the long strip U-shaped fastener has two straight line segments, which are beneficial for the saw to apply force, so that the saw can be used to easily saw off the U-shaped fastener. In addition, the U-shaped structure is easy to be opened and damaged by applying force between the two straight line sections through the two wrenches, so that the padlock in the prior art has poor anti-theft effect.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks and deficiencies of the prior art, the present invention provides a tamper-proof padlock, which can prevent sawing and thus has a better anti-theft effect.

In order to achieve the above object, the present invention provides a padlock with anti-damage function, comprising:

a base with a mounting channel, wherein a ring groove is formed on the inner ring surface of the mounting channel;

a fastener, which is in the shape of a long strip and comprises

A pivoting section which can be rotatably combined with the base;

a first straight line section connected to the pivot section and located outside the base;

a surrounding section connected to the first straight line section;

a second straight line section connected to the surrounding section;

a first anti-sawing sleeve which can be rotatably sleeved on the first straight line section;

the second saw-proof sleeve can be arranged in the mounting channel in a rotating and axial moving manner; at least one bead hole is formed on the pipe wall of the second sawing-resistant sleeve in a penetrating way; a guiding wall is formed on the periphery of each at least one bead hole;

the at least one bead body can be movably arranged in the second sawing-proof sleeve and can protrude out of the at least one bead hole; the at least one ball is limited by the guide wall and cannot move along the axial direction of the second sawing-proof sleeve;

a locking mechanism which is connected with the second saw-proof sleeve and is provided with a propping wall and a retreating groove;

wherein, the anti-damage padlock has a locking state and an unlocking state:

when the base is in the locking state, the second straight-line section is right opposite to the installation channel of the base; the second saw-proof sleeve can be rotatably sleeved on the second straight line section; the at least one bead hole of the second sawing-resistant sleeve is opposite to the annular groove of the base; the locking mechanism is abutted against the at least one bead body through the abutting wall, so that the at least one bead body is kept protruding out of the at least one bead hole and is positioned in the annular groove; the at least one bead can move in the annular groove along with the rotation of the second sawing-resistant sleeve; the second sawing-proof sleeve is limited by the at least one bead and the ring groove and cannot move axially, so that the second straight section of the fastener cannot be separated from the second sawing-proof sleeve;

when the locking mechanism is in the unlocking state, the retreating groove of the locking mechanism is opposite to the at least one ball body; the at least one bead body is positioned in the retreat groove and does not protrude out of the at least one bead hole; the second saw-proof sleeve can move axially without sleeving the second straight section, so that the fastener can pivot relative to the base.

Further, the damage-proof padlock includes a first lock cylinder seat fixed to the second saw-proof sleeve and having a plurality of first bolt holes, a first rod hole and a locking groove; the clamping groove is formed on the inner wall surface of the first rod hole and is provided with a stopping wall and an unlocking wall; the stop wall is perpendicular to the axis of the first rod hole; the unlocking wall is a curved surface facing to the axis of the first rod hole and is connected to the inner wall surface of the first rod hole; the second lock cylinder seat can rotate relative to the second anti-saw sleeve and is provided with a plurality of second bolt holes and a second rod hole; the plurality of second key holes are selectively opposite to the plurality of first key holes; a limiting part is formed on the inner wall surface of the second rod hole in a protruding way; a plurality of lock bolts which are respectively movably arranged in the plurality of first bolt holes and the plurality of second bolt holes; at least one lock bolt selectively penetrates through one first bolt hole and one second bolt hole at the same time, so that the first lock cylinder seat and the second lock cylinder seat cannot rotate relatively; a plurality of bolt elastic elements which are respectively arranged in the plurality of first bolt holes and push against the plurality of lock bolts; a lock rod bar which can rotate and axially move and is arranged in the first rod hole in a penetrating way, and can axially move and is arranged in the second rod hole in a penetrating way; the outer ring surface of the lock core rod is provided with a limit groove and a mounting hole; the limiting groove extends along the axial direction of the lock cylinder rod, and the limiting part of the second lock cylinder seat can be movably arranged in the limiting groove, so that the second lock cylinder seat and the lock cylinder rod can synchronously rotate relative to the first lock cylinder seat, and the lock cylinder rod can axially move relative to the second lock cylinder seat; the abutting wall and the retreating groove are formed on the outer annular surface of the lock core rod and are arranged along the axial direction of the lock core rod; the clamping piece is arranged in the mounting hole of the lock core rod; a clamping elastic element arranged in the mounting hole; the clamping elastic element pushes against the clamping piece to enable the clamping piece to protrude out of the mounting hole and to abut against the inner wall surface of the first lock core seat or abut against the unlocking wall of the clamping groove; the clamping piece can slide relative to the unlocking wall to be separated from the clamping groove along with the rotation of the lock core rod; wherein: when the lock is in the locking state, at least one lock bolt simultaneously penetrates through one first bolt hole and one second bolt hole, so that the first lock cylinder seat and the second lock cylinder seat cannot rotate relatively; the clamping piece is positioned in the clamping groove of the first lock core seat; the blocking wall of the blocking groove blocks the blocking piece, so that the lock core rod cannot move axially and only can be abutted against the at least one bead body through the abutting wall; when the lock is in the unlocking state, the lock bolts do not simultaneously penetrate through the first bolt holes and the second bolt holes; the first lock cylinder seat and the second lock cylinder seat can rotate relatively; the clamping piece is positioned outside the clamping groove of the first lock core seat and is abutted against the inner wall surface of the first lock core seat; the lock core rod can move axially and is opposite to the at least one ball body through the retreating groove.

Further, the tamper-proof padlock may further include a lock cylinder elastic element, which tends to make the lock cylinder bar face the at least one ball body through the escape groove.

Further, the tamper-resistant padlock may include a locking mechanism including a cylinder cap disposed at one end of the cylinder rod; the lock cylinder elastic element is abutted between the lock cylinder cap and the second lock cylinder seat.

Further, the tamper-proof padlock is characterized in that the number of the at least one bead is two; the number of the at least one bead hole is two, and each bead body corresponds to each bead hole respectively; the escape groove is an annular groove extending along the circumferential direction of the lock core rod.

Further, the tamper-resistant padlock may further include a base including a wall portion surrounding the first and second linear segments of the fastener; the wall protecting part is provided with a notch on the moving path of the second straight line section, and the second straight line section can pass through the notch.

Further, the anti-damage padlock includes a second anti-saw sleeve including an upper tube portion connected in sequence and selectively sleeved on the second straight section of the fastener; a middle pipe part, wherein the at least one bead hole and the guide wall are formed on the middle pipe part; a lower tube portion, the locking assembly disposed within the lower tube portion.

Further, the tamper-resistant padlock, wherein the base comprises a top wall having a top opening; the top through hole is communicated with the mounting channel; the inner diameter of the top through hole is larger than the outer diameter of the upper pipe part and smaller than the outer diameter of the middle pipe part; a bottom wall having a bottom through hole; the bottom through hole is communicated with the mounting channel; the inner diameter of the bottom through hole is larger than the outer diameter of the lower pipe part and smaller than the outer diameter of the middle pipe part; the middle pipe part protrudes out of the upper pipe part and the lower pipe part in the radial direction and can abut against the top wall or the bottom wall, and therefore the second sawing prevention sleeve is prevented from being separated from the installation channel.

The utility model has the advantages that when the saw is locked, the first straight line section of the fastener can be rotationally sleeved by the first saw-proof sleeve, and the second straight line section can be rotationally sleeved by the second saw-proof sleeve, so that the saw can only contact the first saw-proof sleeve and the second saw-proof sleeve and can not be directly abutted against the first straight line section or the second straight line section of the fastener. In addition, the first saw-proof sleeve and the second saw-proof sleeve rotate, so the first saw-proof sleeve and the second saw-proof sleeve rotate along with the movement of the saw, and the saw cannot apply force to cut off the first saw-proof sleeve and the second saw-proof sleeve, so the anti-theft effect of the utility model is better.

Drawings

Fig. 1 is a perspective view of the present invention in a locked state.

Fig. 2 is a perspective external view of the unlocked state of the present invention.

Fig. 3 is an exploded view of the components of the present invention.

Fig. 4 is a cross-sectional view of the base of the present invention.

FIG. 5 is an exploded view of the components of the second anti-saw sleeve and locking mechanism of the present invention.

Fig. 6 is a cross-sectional view of a first barrel holder of the present invention.

FIG. 7 is an exploded view of a second cylinder holder and cylinder bar of the present invention.

Fig. 8 is a front sectional view of the present invention in a locked state.

Fig. 9 is a side sectional view of the present invention in a locked state.

Fig. 10 is a top sectional view of the present invention in a locked state.

Fig. 11 is a front sectional view of the utility model in an unlocked state.

Fig. 12 is a side sectional view of the utility model in an unlocked state.

FIG. 13 is a cross-sectional view of the base, fastener, first anti-saw sleeve and second anti-saw sleeve of the present invention.

FIG. 14 is an enlarged partial cross-sectional view of the base, fastener, first saw guard sleeve of the present invention.

Detailed Description

The technical means adopted by the utility model to achieve the predetermined purpose of the utility model are further described below by combining the drawings of the specification and the preferred embodiments of the utility model.

Referring to fig. 1, 3 and 5, the tamper-proof padlock of the present invention includes a base 10, a fastener 20, a first anti-saw sleeve 30, a second anti-saw sleeve 40, at least one ball 50 and a locking mechanism 60. Furthermore, the anti-damage padlock has a locking state and an unlocking state. The locked state is shown in fig. 1, 8, 9, and 10. The unlocked state is shown in fig. 2, 11 and 12.

Referring to fig. 4, the base 10 has a mounting channel 11, and an annular groove 12 is formed on an inner annular surface of the mounting channel 11.

Referring to fig. 3, the fastener 20 is elongated, and specifically, the fastener 20 is U-shaped in the present embodiment. The fastener 20 includes a pivot section 21, a first straight section 22, a surrounding section 23 and a second straight section 24. The pivot section 21 extends linearly and is rotatably inserted into the base 10. The first straight line segment 22 is connected to the pivot segment 21 and located outside the base 10. The surrounding segment 23 is connected to the first straight segment 22 and extends in an arc. The second straight section 24 is connected to the surrounding section 23. The surrounding section 23 and the second straight section 24 move relative to the base 10 as the pivoting section 21 pivots relative to the base 10.

Referring to fig. 8, 13 and 14, the first saw guard sleeve 30 is rotatably sleeved on the first straight line segment 22. Specifically, in the embodiment, a retaining ring flange 301 is formed on the periphery of the bottom opening of the first saw preventing sleeve 30, a fastening step surface 201 is formed between the pivot section 21 and the first straight line section 22 of the fastening 20, the base 10 has a base step surface 101, and the retaining ring flange 301 abuts against the fastening step surface 201 and the base step surface 101 to form a fastening structure, so that the axial positions of the first saw preventing sleeve 30 and the fastening 20 are fixed to each other. However, in other embodiments, the structure may be only a clamping structure between the first saw preventing sleeve 30 and the base 10, or only a clamping structure between the first saw preventing sleeve 30 and the fastener 20, or both a clamping structure between the first saw preventing sleeve 30 and the base 10 and a clamping structure between the first saw preventing sleeve 30 and the fastener 20.

Referring to fig. 5, 8 and 11, the second saw guard sleeve 40 is rotatably and axially movably disposed in the mounting channel 11. At least one bead hole 41 is formed on the wall of the second sawing-resistant sleeve 40. A guide wall 42 is formed on the periphery of each of the bead holes 41. The guiding wall 42 is used to guide the ball 50 to protrude or retract into the ball hole 41.

Further, referring to fig. 13, in the present embodiment, the base 10 includes a top wall 102 and a bottom wall 103, and the second anti-sawing sleeve 40 includes an upper pipe portion 401, a middle pipe portion 402 and a lower pipe portion 403 connected in sequence. The top wall 102 has a top through hole 1021, the top through hole 1021 communicates with the mounting passage 11, and the inside diameter of the top through hole 1021 is larger than the outside diameter of the upper tube portion 401 and smaller than the outside diameter of the middle tube portion 402. The bottom wall 103 has a bottom through hole 1031, the bottom through hole 1031 communicates with the mounting passage 11, and the inner diameter of the bottom through hole 1031 is larger than the outer diameter of the lower tube part 403 and smaller than the outer diameter of the middle tube part 402. The upper pipe portion 401 can pass through the top through hole 1021, the lower pipe portion 403 can pass through the bottom through hole 1031, and the middle pipe portion 402 radially protrudes from the upper pipe portion 401 and the lower pipe portion 403 and can abut against the top wall 102 or the bottom wall 103, thereby preventing the second anti-saw sleeve 40 from being separated from the mounting passage 11. In addition, the upper tube portion 401 selectively sleeves the second linear section 24 of the fastener 20. Bead holes 41 and guide walls 42 are formed in the middle tube portion 402. The locking assembly 60 is disposed within the lower tube portion 403.

The bead 50 is movably disposed in the second sawing prevention sleeve 40 and can protrude out of the bead hole 41. The bead 50 is constrained from axial movement along the second anti-saw sleeve 40 by the guide wall 42.

The locking mechanism 60 is connected to the second anti-sawing sleeve 40 and has an abutting wall 601 and a relief groove 602.

Referring to fig. 1, 4, 8 and 9, in the locked state, the second straight section 24 is aligned with the mounting channel 11 of the base 10. The second anti-sawing sleeve 40 is rotatably sleeved on the second straight section 24. The bead hole 41 of the second sawing prevention sleeve 40 is aligned with the ring groove 12 of the base 10. The locking mechanism 60 abuts the bead 50 with the abutment wall 601, so that the bead 50 is kept protruding from the bead hole 41 and located in the annular groove 12. The bead 50 can move within the annular groove 12 as the second anti-saw sleeve 40 rotates. The second anti-sawing sleeve 40 is restrained from moving axially by the bead 50 and the annular groove 12, whereby the second straight section 24 of the fastener 20 cannot be disengaged from the second anti-sawing sleeve 40.

Referring to fig. 2, 11 and 12, in the unlocked state, the locking mechanism 60 faces the ball 50 with the escape groove 602. The ball 50 is located in the escape groove 602 without protruding from the ball hole 41. The second anti-sawing sleeve 40 can move axially without being sleeved on the second straight section 24, thereby the fastener 20 can pivot relative to the base 10.

Referring to fig. 5, in the present embodiment, the locking mechanism 60 includes a first lock cylinder seat 61, a second lock cylinder seat 62, a plurality of lock pins 63, a plurality of pin elastic elements 64, a lock pin rod 65, a locking member 66, a locking elastic element 67, a lock cylinder elastic element 68, and a lock cylinder cap 69.

Referring to fig. 6, 9 and 10, the first lock cylinder seat 61 is fixed to the second anti-sawing sleeve 40 and has a plurality of first bolt holes 611, a first rod hole 612 and a locking groove 613. The fastening groove 613 is formed on the inner wall surface of the first rod hole 612, and has a stopping wall 6131 and an unlocking wall 6132. The stop wall 6131 is perpendicular to the axis of the first rod bore 612. The unlocking wall 6132 is a curved surface facing the axis of the first rod hole 612, and is connected to the inner wall surface of the first rod hole 612.

Referring to fig. 7, 8 and 12, the second cylinder block 62 can rotate relative to the second anti-saw sleeve 40 and has a plurality of second pin holes 621 and a second rod hole 622. The plurality of second key holes 621 are selectively aligned with the plurality of first key holes 611. A limiting portion 623 is formed on the inner wall surface of the second rod hole 622 in a protruding manner.

Referring to fig. 5 and 9, the latches 63 are movably disposed in the first latch holes 611 and the second latch holes 621, respectively. At least one locking bolt 63 selectively passes through one of the first bolt holes 611 and one of the second bolt holes 621 at the same time, so that the first lock cylinder seat 61 and the second lock cylinder seat 62 cannot rotate relatively. The plurality of bolt elastic elements 64 are respectively disposed in the plurality of first bolt holes 611 and push against the plurality of lock bolts 63. Specifically, in this embodiment, there are fourteen latches 63, seven first latch holes 611, and seven second latch holes 621. Seven of the latches 63 are respectively disposed in the seven first latch holes 611, and the other seven latches 63 are respectively disposed in the seven second latch holes 621. The seven latches 63 disposed in the first latch hole 611 abut against the seven latches 63 disposed in the second latch hole 621, respectively. Any one of the lock bolts 63 can move to simultaneously penetrate through the first bolt hole 611 and the second bolt hole 621, and as long as one lock bolt 63 simultaneously penetrates through the first bolt hole 611 and the second bolt hole 621, the first lock cylinder seat 61 and the second lock cylinder seat 62 cannot rotate relatively. When all the latches 63 do not pass through the first and second latch holes 611 and 621, the first and

second cylinder holders

61 and 62 can rotate relatively.

Referring to fig. 6, 7, 8 and 12, the cylinder rod 65 is rotatably and axially movably inserted into the first rod hole 612 and axially movably inserted into the second rod hole 622. The outer circumferential surface of the cylinder core 65 is formed with a stopper groove 651 and a mounting hole 652. The stopper groove 651 extends in the axial direction of the cylinder block 65, and the stopper portion 623 of the second cylinder block 62 is movably disposed in the stopper groove 651, whereby the second cylinder block 62 and the cylinder block 65 can be rotated synchronously relative to the first cylinder block 61, and the cylinder block 65 can be moved axially relative to the second cylinder block 62. The abutment wall 601 and the escape groove 602 are formed on the outer circumferential surface of the plug lever 65 and are arranged along the axial direction of the plug lever 65.

Referring to fig. 5, 9 and 10, the locking member 66 is disposed in the mounting hole 652 of the key cylinder 65. The snap-fit elastic element 67 is disposed in the mounting hole 652. The locking elastic element 67 pushes against the locking member 66, so that the locking member 66 protrudes out of the mounting hole 652 and abuts against the inner wall surface of the first lock cylinder seat 61 or the unlocking wall 6132 of the locking groove 613. The catching piece 66 can slide with respect to the unlocking wall 6132 to escape from the catching groove 613 as the cylinder lever 65 rotates.

Referring to fig. 5, 8 and 11, the plug resilient member 68 tends to hold the plug lever 65 against the ball 50 in the escape slot 602. A cylinder cap 69 is provided at one end of the cylinder bar 65. The plug resilient member 68 abuts between the plug cap 69 and the second plug seat 62.

In the locked state, at least one locking bolt 63 simultaneously penetrates through the first bolt hole 611 and the second bolt hole 621, so that the first lock cylinder seat 61 and the second lock cylinder seat 62 cannot rotate relatively. The locking piece 66 is located in the locking groove 613 of the first lock cylinder seat 61. The blocking wall 6131 of the blocking groove 613 blocks the blocking element 66, so that the lock cylinder 65 cannot move axially and can only abut against the bead 50 by the abutting wall 601.

In the unlocked state, none of the latches 63 simultaneously pass through the first latch holes 611 and the second latch holes 621. The first cylinder holder 61 and the second cylinder holder 62 can rotate relatively. The locking piece 66 is located outside the locking groove 613 of the first lock cylinder seat 61 and abuts against the inner wall surface of the first lock cylinder seat 61. The cylinder lever 65 is axially movable and faces the ball 50 with the escape groove 602.

The unlocking process and the locking operation of the present embodiment will be described below.

The tamper-resistant padlock is in a locked state before unlocking is initiated. When unlocking, firstly, a key is inserted into the keyhole of the second cylinder holder 62, the key pushes the lock plunger 63 to compress the plunger elastic element 64, and all the lock plungers 63 do not simultaneously penetrate through the first and second lock plunger holes 611 and 621, thereby enabling the first and

second cylinder holders

61 and 62 to rotate relatively. Then, the key is used to rotate the second cylinder holder 62, and the lock cylinder bar 65 is driven to rotate synchronously by the limiting portion 623 of the second cylinder holder 62. In the process of rotating the lock cylinder rod 65, the blocking member 66 slides relative to the unlocking wall 6132 of the blocking groove 613 along with the rotation of the lock cylinder rod 65, and is pushed by the curved unlocking wall 6132 to compress the blocking elastic element 67 and gradually move into the mounting hole 652. The catch 66 then moves across the intersection between the unlocking wall 6132 and the inner wall surface of the first rod bore 612, transitions from abutting against the unlocking wall 6132 to abutting against the inner wall surface of the first rod bore 612, and in so doing disengages from the catch groove 613. At this time, the locking element 66 is no longer stopped and limited by the stopping wall 6131 of the locking groove 613, so that the lock cylinder elastic element 68 pushes the lock cylinder cap 69 to drive the lock cylinder 65 to move axially, and the lock cylinder 65 is changed from the original state in which the abutting wall 601 abuts against the ball body 50 to the state in which the escape groove 602 is aligned with the ball body 50. Therefore, the bead 50 is no longer limited to the protruding bead hole 41 and is engaged with the annular groove 12 of the base 10, but can move into the escape groove 602 to retract into the bead hole 41, so that the second sawing prevention sleeve 40 can move axially and separate from the second linear section 24 of the fastener 20, so that the fastener 20 can rotate. Finally, the anti-damage padlock is converted from the locking state to the unlocking state.

The tamper resistant padlock is in the unlocked state before locking begins. When locking, the fastener 20 is first hooked around the object to be locked, and the fastener 20 is rotated until the second straight section 24 is aligned with the mounting channel 11 of the base 10. Then, the core locking cap 69 is pushed to make the locking mechanism 60 and the second saw-proof sleeve 40 move axially synchronously, and the second straight section 24 of the fastener 20 is sleeved by the second saw-proof sleeve 40. Continued pushing against the cylinder cap 69 then causes the cylinder rod 65 to move axially relative to the first cylinder holder 61 and the second cylinder holder 62. At this time, the ball 50 is restricted by the abutment of the guide wall 42 and cannot move along with the lock pin 65 in the axial direction of the second sawing prevention sleeve 40, so that the escape groove 602 moves relative to the ball 50 to push the ball 50 to gradually protrude from the mounting hole 652. When the lock cylinder rod 65 moves to the positioning, the fastening member 66 originally abutting against the inner wall surface of the first lock cylinder seat 61 is aligned with the fastening groove 613, and at this time, the fastening elastic element 67 enables the fastening member 66 to pop out and penetrate into the fastening groove 613, so that the fastening member 66 is limited by the stop wall 6131 of the fastening groove 613, and the lock cylinder seat cannot move axially. At the same time, the escape groove 602 is completely separated from the bead 50, and the latch lever 65 is turned to abut against the bead 50 with the abutting wall 601 and engage the bead 50 in the annular groove 12 of the base 10. Finally, the anti-damage padlock is converted from the unlocking state to the locking state.

Further, the number of beads 50 is two and the number of bead holes 41 is two in the present embodiment, and the two beads 50 correspond to the two bead holes 41, respectively. The escape groove 602 is a ring groove 12 extending along the circumferential direction of the cylinder plug 65 and surrounding one turn. Thereby, the second saw preventing sleeve 40 in the locked state can rotate more smoothly, and is more difficult to be sawn.

Referring to fig. 2, the base 10 includes a wall protection portion 13 in the present embodiment. The wall guard 13 surrounds the first and second

straight sections

22 and 24 of the fastener 20. The wall protecting part 13 is formed with a notch 14 on the moving path of the second straight line segment 24, and the second straight line segment 24 can pass through the notch 14. Through the support and the restriction of the wall protecting part 13, the fastener 20 is not easy to be spread by other objects between the first straight line section 22 and the second straight line section 24, and the anti-theft performance is further improved.

The advantage of the present invention is that, in the locked state, the first straight section 22 of the fastener 20 can be rotatably sleeved with the first saw preventing sleeve 30, and the second straight section 24 can be rotatably sleeved with the second saw preventing sleeve 40, so that the saw can only contact the first saw preventing sleeve 30 and the second saw preventing sleeve 40, but cannot directly abut against the first straight section 22 or the second straight section 24 of the fastener 20. Moreover, since the first saw preventing sleeve 30 and the second saw preventing sleeve 40 rotate, the first saw preventing sleeve 30 and the second saw preventing sleeve 40 rotate along with the movement of the saw, so that the saw cannot apply force to cut off the first saw preventing sleeve 30 and the second saw preventing sleeve 40. In addition, the wall protection part 13 is formed on the base 10 to protect and support the fastener 20, the first sawing prevention sleeve 30 and the second sawing prevention sleeve 40 by one more layer, so that the wall protection part is not easily spread, and the anti-theft effect of the present invention is good. In addition, the unlocking and locking mode of the utility model is different from the traditional padlock, the lock can be pressed and locked without a key, and the use is more convenient.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A tamper-resistant padlock, comprising

a fastener, which is in the shape of a long strip and comprises

A pivoting section which can be rotatably combined with the base;

a surrounding section connected to the first straight line section;

a second straight line section connected to the surrounding section;

wherein, the anti-damage padlock has a locking state and an unlocking state:

2. The tamper-resistant padlock of claim 1, wherein the locking mechanism comprises

The first lock core seat is fixedly arranged on the second anti-sawing sleeve and is provided with a plurality of first bolt holes, a first rod hole and a clamping groove; the clamping groove is formed on the inner wall surface of the first rod hole and is provided with a stopping wall and an unlocking wall; the stop wall is perpendicular to the axis of the first rod hole; the unlocking wall is a curved surface facing to the axis of the first rod hole and is connected to the inner wall surface of the first rod hole;

the second lock cylinder seat can rotate relative to the second anti-saw sleeve and is provided with a plurality of second bolt holes and a second rod hole; the plurality of second key holes are selectively opposite to the plurality of first key holes; a limiting part is formed on the inner wall surface of the second rod hole in a protruding way;

a plurality of lock bolts which are respectively movably arranged in the plurality of first bolt holes and the plurality of second bolt holes; at least one lock bolt selectively penetrates through one first bolt hole and one second bolt hole at the same time, so that the first lock cylinder seat and the second lock cylinder seat cannot rotate relatively;

a plurality of bolt elastic elements which are respectively arranged in the plurality of first bolt holes and push against the plurality of lock bolts;

a lock rod bar which can rotate and axially move and is arranged in the first rod hole in a penetrating way, and can axially move and is arranged in the second rod hole in a penetrating way; the outer ring surface of the lock core rod is provided with a limit groove and a mounting hole; the limiting groove extends along the axial direction of the lock cylinder rod, and the limiting part of the second lock cylinder seat can be movably arranged in the limiting groove, so that the second lock cylinder seat and the lock cylinder rod can synchronously rotate relative to the first lock cylinder seat, and the lock cylinder rod can axially move relative to the second lock cylinder seat; the abutting wall and the retreating groove are formed on the outer annular surface of the lock core rod and are arranged along the axial direction of the lock core rod;

the clamping piece is arranged in the mounting hole of the lock core rod;

a clamping elastic element arranged in the mounting hole; the clamping elastic element pushes against the clamping piece to enable the clamping piece to protrude out of the mounting hole and to abut against the inner wall surface of the first lock core seat or abut against the unlocking wall of the clamping groove; the clamping piece can slide relative to the unlocking wall to be separated from the clamping groove along with the rotation of the lock core rod;

wherein:

when the lock is in the locking state, at least one lock bolt simultaneously penetrates through one first bolt hole and one second bolt hole, so that the first lock cylinder seat and the second lock cylinder seat cannot rotate relatively; the clamping piece is positioned in the clamping groove of the first lock core seat; the blocking wall of the blocking groove blocks the blocking piece, so that the lock core rod cannot move axially and only can be abutted against the at least one bead body through the abutting wall;

when the lock is in the unlocking state, the lock bolts do not simultaneously penetrate through the first bolt holes and the second bolt holes; the first lock cylinder seat and the second lock cylinder seat can rotate relatively; the clamping piece is positioned outside the clamping groove of the first lock core seat and is abutted against the inner wall surface of the first lock core seat; the lock core rod can move axially and is opposite to the at least one ball body through the retreating groove.

3. The tamper-resistant padlock of claim 2, wherein the locking mechanism comprises

And the lock cylinder elastic element tends to enable the lock cylinder rod to be opposite to the at least one ball body through the retreat groove.

4. The tamper-resistant padlock of claim 3, wherein the locking mechanism comprises

A lock core cap, which is arranged at one end of the lock core rod; the lock cylinder elastic element is abutted between the lock cylinder cap and the second lock cylinder seat.

5. The tamper-resistant padlock of claim 2,

the number of the at least one bead body is two;

the number of the at least one bead hole is two, and each bead body corresponds to each bead hole respectively;

the escape groove is an annular groove extending along the circumferential direction of the lock core rod.

6. The tamper-resistant padlock of any one of claims 1 to 5, wherein the base comprises

A wall protecting part surrounding the first straight line section and the second straight line section of the fastener; the wall protecting part is provided with a notch on the moving path of the second straight line section, and the second straight line section can pass through the notch.

7. The tamper-resistant padlock of any one of claims 1 to 5, wherein the second saw guard sleeve comprises sequentially connected saw guard tubes

An upper pipe portion selectively sleeved on the second straight line section of the fastener;

a middle pipe part, wherein the at least one bead hole and the guide wall are formed on the middle pipe part;

a lower tube portion, the locking assembly disposed within the lower tube portion.

8. The tamper-resistant padlock of claim 7,

the base comprises

A top wall having a top through hole; the top through hole is communicated with the mounting channel; the inner diameter of the top through hole is larger than the outer diameter of the upper pipe part and smaller than the outer diameter of the middle pipe part;

a bottom wall having a bottom through hole; the bottom through hole is communicated with the mounting channel; the inner diameter of the bottom through hole is larger than the outer diameter of the lower pipe part and smaller than the outer diameter of the middle pipe part;

the upper pipe part can penetrate out of the top through hole;

the lower pipe part can penetrate through the bottom through hole;

the middle pipe part protrudes out of the upper pipe part and the lower pipe part in the radial direction and can abut against the top wall or the bottom wall, and therefore the second sawing prevention sleeve is prevented from being separated from the installation channel.