CN111852199B

CN111852199B - Anti-theft lock core

Info

Publication number: CN111852199B
Application number: CN202010671935.8A
Authority: CN
Inventors: 罗凡
Original assignee: Wenzhou Sheng An Lock Co ltd
Current assignee: Wenzhou Sheng an lock Co.,Ltd.
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-06-15
Anticipated expiration: 2040-07-14
Also published as: CN111852199A

Abstract

The invention relates to the technical field of hardware power transmission, and discloses an anti-theft lock core, which comprises a lock body and a lock core, wherein the lock core is movably sleeved in the lock body, the inner ring of the lock body is provided with a circle of rotating ring groove, the top part of the interior of the lock body is provided with a first marble hole, the interior of the first marble hole is movably sleeved with an upper marble connected through a spring, the top part of the interior of the lock core is provided with a second marble hole, the interior of the second marble hole is movably sleeved with a lower marble, the back surface of the lock core is provided with a chute, the top part of the chute is movably provided with a contact, the bottom part of the back surface of the lower marble is fixedly provided with a limiting block matched with the chute, one side of the interior of the lock core, which is as high as the contact, is provided with a hydraulic hole channel, the end part of the hydraulic hole is movably sleeved with the contact, the safety of lock core is improved, still have simultaneously and prevent inserting wrong key function.

Description

Anti-theft lock core

Technical Field

The invention relates to the technical field of hardware power transmission, in particular to an anti-theft lock cylinder.

Background

The lock is that every family of family all needs to use today, and the most common is used in on the door, utilizes the lock to play the effect of insurance, and the theory of operation of lock is very simple, utilizes the pellet shot from a slingshot with misplacing the joint between lock core and the lock body, can be with going up pellet shot from a slingshot and separating the position with lower pellet shot from a slingshot separately and be located the gap department between lock core and the lock body when the key inserts, can rotate the key this moment and open the door, but this kind of principle has appeared a lot of technical unlocking illegal events after disclosing:

because the design is based on the dislocation clamping mode of the marble, a plurality of lawless persons can use the unlocking tool to jack the marble and judge whether to jack the marble to a separation position according to twisting the lock cylinder. Then, slowly trying until all the marbles are pushed to the same position, and then unlocking can be caused, so that a lot of burglary situations can be caused; moreover, in general, due to the fact that the same type of key has different specifications and the concave-convex tooth parts are different, a person who has a plurality of locks of the same type can easily insert wrong keys, the key can be bent by forcibly twisting the key when the person carelessly wants to, and the key can be twisted off vigorously, so that the key core can not be clamped into the lock core when the person cannot open the door, a professional person needs to be asked to unlock the lock, and the lock is more troublesome and time-consuming and economical.

Disclosure of Invention

Aiming at the defects of the background technology, the invention provides the anti-theft lock cylinder which has the advantages of safety and wrong key insertion prevention and solves the problems in the background technology.

The invention provides the following technical scheme: an anti-theft lock core comprises a lock body and a lock core, wherein the lock core is movably sleeved inside the lock body, the inner ring of the lock body is provided with a circle of rotating ring groove, the top inside the lock body is provided with a first marble hole, an upper marble connected through a spring is movably sleeved inside the first marble hole, the middle part of the lock core is provided with a key hole, the top inside the lock core is provided with a second marble hole matched with the first marble hole, a lower marble is movably sleeved inside the second marble hole, the back of the lock core is provided with a chute, the top of the chute is movably provided with a butt contact, the bottom of the back of the lower marble is fixedly provided with a limit block matched with the chute, one side of the inside of the lock core, which is as high as the butt contact, is provided with a hydraulic hole channel, the end part of the hydraulic hole is movably sleeved with the butt contact, the insides of two ends of the hydraulic hole channel are, the middle part of the hydraulic pore channel is movably sleeved with a rotation limiting device, a communicating hole is formed in the rotation limiting device and is communicated with two ends of the hydraulic pore channel, and one side of the rotation limiting device extends out of the rotation ring groove.

Preferably, the inner side of the lock core is provided with a movable inner cavity at a position below the hydraulic pore passage, one side of the lower marble is provided with a fixed hole, the other side of the lower marble is provided with a limit groove, the middle part of the movable inner cavity is movably provided with a rotating rod, one end of the rotating rod is movably connected with a clamping shaft, the other end of the rotating rod is movably connected with a movable butt head, and the movable butt head is fixedly connected between one end of the movable inner cavity and the inner wall of the lock core.

Preferably, the width of the rotating ring groove at the extending end of the rotation limiting device is increased, the length of each sliding groove is the distance from the top of the shortest lower marble to the surface of the outer ring of the lock core, the number of the shortest lengths of the lower marbles is two, the collision heads are arranged at the top of the sliding groove corresponding to the shortest lower marble, and the top of each limiting block is provided with an inclined chamfer.

Preferably, the hydraulic duct is filled with hydraulic oil, a certain unfilled space is left at the positions of the two ends, the sleeve joint of the abutting contact and the hydraulic duct is sealed, and the inner diameter of the hydraulic duct is reduced at the two ends of the rotation limiting device.

Preferably, one movable inner cavity corresponds to the positions of the two lower marbles, the diameter of the fixing hole is larger than that of the end part of the clamping shaft, and the length of the limiting groove is equal to that of the sliding groove.

The invention has the following beneficial effects:

compared with the prior art, the lowest lower marble is pushed to the unlocking position and simultaneously pushes the abutting contact, so that the rotation limiting device can be ensured to be positioned in the middle part and not to deviate through the pressure transmission of the hydraulic oil hole so as to rotate the lock core, when other tools are used for unlocking, the simultaneous pressing of the two position contact heads cannot be ensured, so that the rotation limiting device can deviate and cannot be completely matched with the rotating ring groove, the lock core cannot be rotated, the theft condition of lawless persons is effectively prevented, meanwhile, the clamping shaft is matched with the movable abutting head, so that the key can be inserted according to the standard, otherwise, the key cannot be pushed up to remove the marble when being inserted, and the damage condition of the key and the lock cylinder caused by inserting a wrong key is avoided.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is an overall elevational view of the structure of the present invention;

FIG. 3 is a cross-sectional view of the lock body structure of the present invention;

FIG. 4 is a schematic view of the lower pin tumbler configuration of the present invention;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 7 is a cross-sectional view taken along line C-C of FIG. 2;

FIG. 8 is a view of the lower pin tumbler in longitudinal section;

FIG. 9 is an enlarged view of FIG. 5 at D;

FIG. 10 is an enlarged view at E of FIG. 6;

fig. 11 is an enlarged view at F in fig. 7.

In the figure: 1. a lock body; 101. rotating the ring groove; 102. a first bullet hole; 2. a lock cylinder; 201. a key hole; 202. a second bullet hole; 203. a chute; 204. a movable inner cavity; 205. abutting against the contact; 3. mounting a marble; 4. Discharging the marble; 401. a limiting block; 402. a fixing hole; 403. a limiting groove; 5. rotating the rod; 6. clamping a shaft; 7. A movable abutting head; 8. a rotation restricting device; 801. a communicating hole; 9. a hydraulic duct; 901. a limiting ring is provided with a hole; 902. a return spring; 10. compressing the spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-11, an anti-theft lock core includes a lock body 1 and a lock core 2, the lock core 2 is movably sleeved inside the lock body 1, an inner ring of the lock body 1 is provided with a circle of rotating ring groove 101, a top portion inside the lock body 1 is provided with a first ball hole 102, an upper ball 3 connected by a spring is movably sleeved inside the first ball hole 102, a middle portion of the lock core 2 is provided with a key hole 201, a top portion inside the lock core 2 is provided with a second ball hole 202 adapted to the first ball hole 102, a lower ball 4 is movably sleeved inside the second ball hole 202, a sliding groove 203 is provided on a back surface of the second ball hole 202 of the lock core 2, a contact 205 is movably mounted on a top portion of the sliding groove 203, a limit block 401 adapted to the sliding groove 203 is fixedly mounted on a bottom portion of the back surface of the lower ball 4, a hydraulic duct 9 is provided on a side of the lock core 2 having the same height as the contact 205, an, the inside fixed mounting in both ends of hydraulic pressure pore canal 9 has trompil spacing ring 901, fixedly connected with reset spring 902 between trompil spacing ring 901 and the conflict head 205, reset spring 902 can adjust after pressure variation and reset contact 205 and rotation limiting device 8, the middle part activity of hydraulic pressure pore canal 9 has cup jointed rotation limiting device 8, the inside of rotation limiting device 8 is seted up a intercommunicating pore 801 and is linked up the both ends of hydraulic pressure pore canal 9, the rotation limiting device 8's one side stretches out to rotation annular 101 department.

Wherein, the inside both sides of lock core 2 are located the position of hydraulic pressure pore 9 below and have seted up movable inner chamber 204, fixed orifices 402 has been seted up to one side of lower pellet shot from a slingshot 4, spacing groove 403 has been seted up to the opposite side of lower pellet shot from a slingshot 4, the middle part movable mounting of activity inner chamber 204 has dwang 5, the one end swing joint of dwang 5 has calorie axle 6, the other end swing joint of dwang 5 has activity to be held first 7, activity is held first 7 and is close to fixedly connected with compression spring 10 between the one end of activity inner chamber 204 and the lock core 2 inner wall, compression spring 10 is in compression state, can lock after the locking with calorie axle 6 cup joint in fixed.

Wherein, the width of the rotary ring groove 101 at the extending end of the rotation limiting device 8 is increased, when the two ends of the rotation limiting device 8 are not pressed simultaneously, the extending end of the rotation limiting device 8 is not aligned with the center of the rotary ring groove 101, so that the rotation is limited and can not be rotated, thereby avoiding technical unlocking, the length of the sliding chute 203 is the distance from the top of the shortest lower marble 4 to the outer ring surface of the lock core 2, because the lower marble 4 needs to be jacked up to different heights until the final height when a key is inserted, the sliding chute 203 can ensure the maximum height difference, the number of the shortest length of the lower marbles 4 is two, the abutting contacts 205 are arranged at the top of the sliding chute 203 corresponding to the shortest lower marble 4, the two lowest marbles 4 are utilized to realize the pressure control in the hydraulic duct 9, and the pressure change at the two ends in the hydraulic duct 9 can be ensured to be the same only when the two, and then guarantee that rotation limiting device 8 can not produce the skew dislocation restriction, the top of stopper 401 has seted up the slope chamfer, more does benefit to and pushes up contact 205 inside hydraulic duct 9.

The hydraulic duct 9 is filled with hydraulic oil and leaves a certain unfilled space at the positions of the two ends, the socket joint of the contact 205 and the hydraulic duct 9 is sealed, the reserved space can be reserved after all the contact heads 205 at the two ends are abutted to the hydraulic duct 9, otherwise, the contact 205 cannot be pressed when a key is inserted, the inner diameter of the hydraulic duct 9 is reduced at the two ends of the rotation limiting device 8, and the rotation limiting device 8 is driven to deviate obviously due to pressure change.

The design can realize the one-to-one linkage effect between the left lower marble 4 and the right lower marble 4, the diameter of the fixed hole 402 is larger than that of the end part of the clamping shaft 6 to prevent the occurrence of blocking, and the length of the limiting groove 403 is equal to that of the sliding groove 203, so that the lower marbles 4 can move up and down when a key is inserted.

The working principle is that when a normal key goes in and out of the key hole 201, the lower pin tumbler 4 is pushed by the high and low teeth of the key so as to be pushed to a certain height, the movable abutting head 7 is communicated with the limiting groove 403 when the first lower pin tumbler 4 is pushed, the clamping shaft 6 pushes the movable abutting head 7 into the limiting groove 403 by the rotating rod 5 under the action of the re-compression spring 10, the compression spring 10 loses the compression force and extracts the clamping shaft 6 from the fixed hole 402 according to the rotation of the rotating rod 5, the second lower pin tumbler 4 can be pushed upwards by the key, and if the key is not in conformity, the previous lower pin tumbler 4 cannot be pushed, so that the next lower pin tumbler 4 cannot be pushed, namely, the installation in the linkage mode is realized, when one section of the key is not in conformity with the specification, the key cannot be continuously inserted, and the condition of inserting wrong keys is avoided, when the key is completely inserted, namely the lowest limiting block 401 of the lower marble 4 is pushed to the highest position of the sliding groove 203 and pushes the contact 205 into the sliding groove, the two contact 205 are simultaneously pressed inwards, the pressure change at two ends in the hydraulic duct 9 is ensured to be the same, the rotation limiting device 8 cannot deviate from the central position, and then the lock core 2 is rotated to unlock;

when a lawbreaker wants to technically unlock, the lower marbles 4 are jacked upwards by an unlocking tool and are not jacked upwards continuously, so that the resistance force applied when the lock core 2 is screwed is very large, which lower marble 4 is clamped loosely cannot be judged, the jacking cannot be continued as long as the front lower marble 4 is not jacked subsequently, and even if the unlocking mode adopts a jacking operation, the lower marble 4 is jacked at a critical rotating position, so that the two lowest lower marbles 4 cannot be jacked simultaneously, the pressure changes at two ends in the hydraulic duct 9 are different, the pressure at one end changes firstly and the pressure at the other end changes later, the rotation limiting device 8 generates certain deviation under the condition of pressure, and the extending end cannot be aligned with the center of the rotating ring groove 101, and then can't realize rotating lock core 2, played the effect of theftproof, later after removing the theftproof instrument, support contact 205 and lose the pressure and resume to initial condition again under the effect of reset spring 902, can not make lock core 2 destroyed.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an anti-theft lock core, includes lock body (1) and lock core (2), and lock core (2) activity cup joints in the inside of lock body (1), its characterized in that: the inner ring of the lock body (1) is provided with a circle of rotating ring groove (101), the top inside the lock body (1) is provided with a first marble hole (102), an upper marble (3) connected through a spring is movably sleeved inside the first marble hole (102), the middle part of the lock cylinder (2) is provided with a key hole (201), the top inside the lock cylinder (2) is provided with a second marble hole (202) matched with the first marble hole (102), a lower marble (4) is movably sleeved inside the second marble hole (202), the back of the second marble hole (202) of the lock cylinder (2) is provided with a sliding groove (203), the top of the sliding groove (203) is movably provided with a contact (205), the bottom of the back of the lower marble (4) is fixedly provided with a limiting block (401) matched with the sliding groove (203), the side of the inside of the lock cylinder (2) with the same height as the contact (205) is provided with a hydraulic hole channel (9), the tip and the activity of propping contact (205) of hydraulic pressure pore canal (9) are cup jointed, the inside fixed mounting in both ends of hydraulic pressure pore canal (9) has trompil spacing ring (901), trompil spacing ring (901) and the contact of propping fixedly connected with reset spring (902) between (205), the middle part activity of hydraulic pressure pore canal (9) is cup jointed and is rotated limiting device (8), the both ends of a intercommunicating pore (801) intercommunication hydraulic pressure pore canal (9) are seted up to the inside of rotating limiting device (8), rotate one side of limiting device (8) and stretch out rotation annular (101) department.

2. An anti-theft lock cylinder according to claim 1, characterized in that: the utility model discloses a lock core, including lock core (2), limiting groove (403), activity inner chamber (204) have been seted up to the position that inside both sides of lock core (2) are located hydraulic pressure pore (9) below, fixed orifices (402) have been seted up to one side of pellet shot from a slingshot (4) down, spacing groove (403) have been seted up to the opposite side of pellet shot from a slingshot (4) down, the middle part movable mounting of activity inner chamber (204) has dwang (5), the one end swing joint of dwang (5) has calorie axle (6), the other end swing joint of dwang (5) has the activity to support head (7), the activity is supported head (7) and is close.

3. An anti-theft lock cylinder according to claim 1, characterized in that: rotate annular (101) and stretch out the regional width grow of end in rotation limiting device (8), the length of spout (203) is the distance of lower pellet shot from a slingshot (4) top to lock core (2) outer lane face of the shortest, the number of pellet shot from a slingshot (4) minimum length is two down, support contact (205) and install spout (203) top position that pellet shot from a slingshot (4) correspond under the shortest, the slope chamfer has been seted up at the top of stopper (401).

4. An anti-theft lock cylinder according to claim 1, characterized in that: the hydraulic hole channel (9) is filled with hydraulic oil, certain unfilled spaces are reserved at the positions of two ends, the sleeve joint position of the abutting contact (205) and the hydraulic hole channel (9) is subjected to sealing treatment, and the inner diameter of the hydraulic hole channel (9) is reduced at two ends of the rotation limiting device (8).

5. An anti-theft lock cylinder according to claim 2, characterized in that: the movable inner cavity (204) corresponds to the positions of the two lower marbles (4), the diameter of the fixing hole (402) is larger than that of the end part of the clamping shaft (6), and the length of the limiting groove (403) is equal to that of the sliding groove (203).