CN111395914A - Anti-theft device of intelligent safe based on current variant - Google Patents
Anti-theft device of intelligent safe based on current variant Download PDFInfo
- Publication number
- CN111395914A CN111395914A CN202010415202.8A CN202010415202A CN111395914A CN 111395914 A CN111395914 A CN 111395914A CN 202010415202 A CN202010415202 A CN 202010415202A CN 111395914 A CN111395914 A CN 111395914A
- Authority
- CN
- China
- Prior art keywords
- shell
- swing joint
- outside
- movably connected
- knob
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05G—SAFES OR STRONG-ROOMS FOR VALUABLES; BANK PROTECTION DEVICES; SAFETY TRANSACTION PARTITIONS
- E05G1/00—Safes or strong-rooms for valuables
- E05G1/02—Details
- E05G1/04—Closure fasteners
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0038—Operating or controlling locks or other fastening devices by electric or magnetic means using permanent magnets
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B65/00—Locks or fastenings for special use
- E05B65/0075—Locks or fastenings for special use for safes, strongrooms, vaults, fire-resisting cabinets or the like
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B2047/0048—Circuits, feeding, monitoring
- E05B2047/0057—Feeding
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/20—Application of doors, windows, wings or fittings thereof for furnitures, e.g. cabinets
- E05Y2900/21—Application of doors, windows, wings or fittings thereof for furnitures, e.g. cabinets for safety cabinets
Abstract
The invention relates to the technical field of intelligent household system equipment, and discloses an anti-theft device of an intelligent safe based on an electrorheological fluid, which comprises a shell and a rotating shaft, wherein the inside of the shell is movably connected with an N pole, the inside of the shell is movably connected with an S pole, the inside of the shell is movably connected with a movable rod, the outside of the shell is movably connected with a knob, and the outside of the knob is movably connected with a bevel gear; through the shell, the N utmost point, the S utmost point, the movable rod, the knob, bevel gear, the thread groove, the threaded rod, under the interact between the ejector pin, can be so that the N utmost point of this device, the S utmost point is located the different positions of every safe inner wall and controls the dead lock position that corresponds, and by remote control of knob, this has just avoided traditional safe to need the manpower to open through the trick lock, also can avoid others can not carry out the violence through external force to the safe and open, very big improvement the security of this device like this, be fit for the use in the actual life more.
Description
Technical Field
The invention relates to the technical field of intelligent household system equipment, in particular to an anti-theft device of an intelligent safe based on an electrorheological fluid.
Background
The intelligent equipment is highly automated mechanical and electrical integration equipment, and has high requirements on the reliability of the intelligent equipment due to the complex structure and important function in a system. The reliability of the electronic product is determined by the reliability of the components, the technical design, the process level, the technical management and the like.
Along with the continuous popularization of smart machine and the continuous improvement of people's safety consciousness, people generally all can adopt to put into the safe to some valuables and preserve, but traditional safe generally can adopt comparatively complicated mechanical lock, but even such lock still can be opened by the help of external force by the people, will cause the loss of people's property like this, influence people's normal life state, and safe now is not intelligent enough, on promoting the inside property safety measure of safe, only can thicken the tank wall thickness of safe and change the lock core, generally hardly have the breakthrough to the mode of opening, just so be not fit for intelligent family life now, the security of reduction safe that also can be great.
Therefore, in order to solve these problems, an anti-theft device for intelligent safe based on current variant is needed.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an intelligent safe anti-theft device based on an electrorheological fluid, which has the advantages of high safety factor and remote control, and solves the problems that the traditional safe generally adopts a relatively complex mechanical lock, but even if the lock is still opened by people by means of external force, property loss of people can be caused, and the normal living state of people is influenced.
(II) technical scheme
In order to achieve the purposes of high safety factor and remote control, the invention provides the following technical scheme: the utility model provides an anti-theft device of intelligent safe based on current variant, which comprises an outer shell and a rotating shaft, the inside swing joint of shell has the N utmost point, the inside swing joint of shell has the S utmost point, the inside swing joint of shell has the movable rod, the outside swing joint of shell has the knob, the outside swing joint of knob has bevel gear, bevel gear' S outside swing joint has the thread groove, the inside swing joint of thread groove has the threaded rod, the outside fixedly connected with ejector pin of threaded rod, the inside swing joint of shell has the slider, the inside swing joint of shell has the connecting rod, the outside swing joint of connecting rod has spring one, the inside fixedly connected with fixed tube of shell, the outside fixedly connected with ratchet of pivot, the outside swing joint of ratchet has the movable block, the outside swing joint of movable block has current variant, the outside fixedly connected with gear of pivot, the.
Preferably, pivot swing joint is in the inside of shell, and the specification phase-match of the N utmost point and the S utmost point, and the outside swing joint of movable rod has spring two, and the outside swing joint of spring two has the bar copper in the outside of shell, the outside swing joint of movable rod, and the specification of bar copper matches with the N utmost point, the S utmost point.
Preferably, the outside fixedly connected with bevel gear of thread groove, this bevel gear meshes with the outside bevel gear of knob, and the specification and the movable rod phase-match of ejector pin, the outside and the slider swing joint of ejector pin and specification phase-match.
Preferably, the outer part of the sliding block and the outer part of the connecting rod are both provided with friction layers, the number of the connecting rods is two, and two ends of the first spring are movably connected to the outer parts of the two connecting rods respectively.
Preferably, the rotating shaft is movably connected inside the fixed pipe, the movable block is movably connected outside the spring III, the spring III is movably connected inside the shell, and the current transformer is movably connected inside the shell.
Preferably, the outer parts of the connecting rod and the sliding block are movably connected with the gear, and the toothed bar is movably connected inside the shell.
Preferably, the current transformer is electrically connected with the driving power supply and the remote terminal, the rotating shaft is electrically connected with the driving power supply and the copper bar, and the knob is electrically connected with the driving power supply and the remote terminal.
Preferably, the outer part of the knob is movably connected with a spring strip, and the spring strip in the initial state is in a tightening state.
Preferably, the main materials of the electrorheological fluid are gypsum, lime, carbon powder and olive oil, and the electrorheological fluid is solid in a power-on state and liquid in a non-power-on state.
(III) advantageous effects
Compared with the prior art, the invention provides an anti-theft device of an intelligent safe based on an electrorheological fluid, which has the following beneficial effects:
1. this anti-theft device of intelligent safe based on current variant, through the shell, the N utmost point, the S utmost point, the movable rod, the knob, bevel gear, the thread groove, the threaded rod, under the interact between the ejector pin, can make the N utmost point of this device, the S utmost point is located the different positions of every safe inner wall and controls the dead lock position that corresponds, and by remote control of knob, this needs the manpower to be opened through the trick lock just to have avoided traditional safe, also can avoid others can not carry out the violence through external force to the safe and open, very big improvement the security of this device like this, be fit for the use in the actual life more.
2. This anti-theft device of intelligent safe based on current variant through, under the interact between pivot slider, connecting rod, spring one, fixed pipe, ratchet, movable block, current variant, gear, the ratch, can make current variant under the control action of remote control end for the lock core part of this device is in the card and the state, just so can avoid external force to open the lock core part, more shows intellectuality.
Drawings
FIG. 1 is a schematic partial cross-sectional view of the inventive structure;
FIG. 2 is a schematic view of the structure of FIG. 1 at A according to the present invention;
FIG. 3 is a schematic view of the structure of FIG. 1 at B according to the present invention;
FIG. 4 is a schematic view of the connection structure between the housing, the N pole, the S pole and the movable rod according to the present invention;
FIG. 5 is a schematic view showing the connection among the housing, the rotary shaft, the fixed tube, the ratchet, the gear and the rack bar according to the present invention.
In the figure: 1. a housing; 2. a rotating shaft; 3. an N pole; 4. an S pole; 5. a movable rod; 6. a knob; 7. a bevel gear; 8. a thread groove; 9. a threaded rod; 10. a top rod; 11. a slider; 12. a connecting rod; 13. a first spring; 14. a fixed tube; 15. a ratchet wheel; 16. a movable block; 17. an electrorheological fluid; 18. a gear; 19. a toothed bar.
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. 1-5, an anti-theft device of an intelligent safe based on an electrorheological fluid comprises a shell 1 and a rotating shaft 2, wherein the inside of the shell 1 is movably connected with an N pole 3, the inside of the shell 1 is movably connected with an S pole 4, the inside of the shell 1 is movably connected with a movable rod 5, the rotating shaft 2 is movably connected inside the shell 1, specifications of the N pole 3 and the S pole 4 are matched, the outside of the movable rod 5 is movably connected with a second spring, the outside of the second spring is movably connected outside the shell 1, the outside of the movable rod 5 is movably connected with a copper rod, and the specification of the copper rod is matched with the N pole 3 and the S pole 4; the outer part of the shell 1 is movably connected with a knob 6, the outer part of the knob 6 is movably connected with a spring strip, and the spring strip in an initial state is in a tightening state.
The outside swing joint of knob 6 has bevel gear 7, bevel gear 7' S outside swing joint has thread groove 8, the inside swing joint of thread groove 8 has threaded rod 9, the outside fixedly connected with ejector pin 10 of threaded rod 9, through shell 1, the N utmost point 3, the S utmost point 4, movable rod 5, knob 6, bevel gear 7, thread groove 8, threaded rod 9, under the interact between the ejector pin 10, can make the N utmost point 3 of this device, the S utmost point 4 is located the different positions of every safe inner wall and controls the dead-locked position that corresponds, and knob 6 by remote control, this has just avoided traditional safe to need the manpower to open through the trick lock, also can avoid others can not to carry out the violence through external force to the safe and open, very big improvement the security of this device like this, be fit for the use in the actual life more.
The inside of the shell 1 is movably connected with a sliding block 11, the outside of the thread groove 8 is fixedly connected with a bevel gear 7, the bevel gear 7 is meshed with the bevel gear 7 outside the knob 6, the specification of the ejector rod 10 is matched with the movable rod 5, and the outside of the ejector rod 10 is movably connected with the sliding block 11 and is matched with the specification; the inner part of the shell 1 is movably connected with a connecting rod 12, the outer part of the connecting rod 12 is movably connected with a first spring 13, the outer part of the sliding block 11 and the outer part of the connecting rod 12 are both provided with friction layers, the number of the connecting rods 12 is two, and two ends of the first spring 13 are respectively movably connected with the outer parts of the two connecting rods 12; a fixed tube 14 is fixedly connected to the inside of the shell 1, a ratchet 15 is fixedly connected to the outside of the rotating shaft 2, a movable block 16 is movably connected to the outside of the ratchet 15, an electrorheological body 17 is movably connected to the outside of the movable block 16, the rotating shaft 2 is movably connected to the inside of the fixed tube 14, the movable block 16 is movably connected to the outside of the fixed tube 14, a spring III is movably connected to the outside of the movable block 16, the outside of the spring III is movably connected to the inside of the shell 1, and the electrorheological body 17 is movably connected to the inside of the shell 1; the main materials of the electrorheological fluid 17 are gypsum, lime, carbon powder and olive oil, and the electrorheological fluid 17 is solid in a power-on state and liquid in a non-power-on state.
A gear 18 is fixedly connected to the outer part of the rotating shaft 2, a toothed bar 19 is movably connected to the outer part of the gear 18, the outer parts of the connecting rod 12 and the sliding block 11 are movably connected with the gear 18, and the toothed bar 19 is movably connected to the inner part of the shell 1; the electrorheological body 17 is in electric signal connection with a driving power supply and a remote terminal, the rotating shaft 2 is in electric signal connection with the driving power supply and the copper bar, the knob 6 is in electric signal connection with the driving power supply and in electric signal connection with the remote terminal, and under the interaction of the rotating shaft slider 11, the connecting rod 12, the first spring 13, the fixed tube 14, the ratchet wheel 15, the movable block 16, the electrorheological body 17, the gear 18 and the toothed rod 19, the electrorheological body 17 can be controlled by the remote control end, so that the lock cylinder part of the device is in a clamping state, external force can be prevented from opening the lock cylinder part, and the device is more intelligent.
The working process and the principle are that when the device starts to be started, as the inner part of the shell 1 is movably connected with the N pole 3, the inner part of the shell 1 is movably connected with the S pole 4, the inner part of the shell 1 is movably connected with the movable rod 5, the outer part of the shell 1 is movably connected with the knob 6, the outer part of the knob 6 is movably connected with the bevel gear 7, the outer part of the bevel gear 7 is movably connected with the thread groove 8, the inner part of the thread groove 8 is movably connected with the threaded rod 9, the outer part of the threaded rod 9 is fixedly connected with the ejector rod 10, the inner part of the shell 1 is movably connected with the slide block 11, the rotating shaft 2 is movably connected with the inner part of the shell 1, the specifications of the N pole 3 and the S pole 4 are matched, the outer part of the movable rod 5 is movably connected with the spring II, the outer part of the spring, a bevel gear 7 is fixedly connected to the outside of the thread groove 8, the bevel gear 7 is meshed with the bevel gear 7 on the outside of the knob 6, the specification of the ejector rod 10 is matched with that of the movable rod 5, the outside of the ejector rod 10 is movably connected with the sliding block 11 and is matched with that of the sliding block, a spring strip is movably connected to the outside of the knob 6, the spring strip is in a tightened state in an initial state, and the knob 6 is electrically connected with a driving power supply and a remote terminal; at the moment, an operator enables a driving power supply to drive a knob 6 to rotate through a remote terminal, the knob 6 rotates to drive a spring strip to be loosened and a bevel gear 7 outside the spring strip to rotate, the bevel gear 7 rotates to drive a thread groove 8 to rotate under the action of the bevel gear 7 meshed with the bevel gear 7, the thread groove 8 rotates to drive a threaded rod 9 to move, the threaded rod 9 moves to drive an ejector rod 10 to move, the ejector rod 10 moves to drive a movable rod 5 to move, the movable rod 5 moves to drive a copper rod and a spring II to move, the copper rod moves to cut a magnetic field between an N pole 3 and an S pole 4 and further to generate current inside the copper rod, and the ejector rod.
Because the inside of the shell 1 is movably connected with a connecting rod 12, the outside of the connecting rod 12 is movably connected with a first spring 13, the inside of the shell 1 is fixedly connected with a fixed tube 14, the outside of the rotating shaft 2 is fixedly connected with a ratchet 15, the outside of the ratchet 15 is movably connected with a movable block 16, the outside of the movable block 16 is movably connected with a current variant 17, the outside of the rotating shaft 2 is fixedly connected with a gear 18, the outside of the gear 18 is movably connected with a toothed bar 19, the outside of the sliding block 11 and the outside of the connecting rod 12 are both provided with friction layers, two connecting rods 12 are provided, two ends of the first spring 13 are respectively movably connected with the outside of the two connecting rods 12, the rotating shaft 2 is movably connected with the inside of the fixed tube 14, the movable block 16 is movably connected with the outside of the fixed tube 14, the outside of the movable block 16 is movably connected, the outer parts of the connecting rod 12 and the sliding block 11 are movably connected with a gear 18, a toothed bar 19 is movably connected with the inner part of the shell 1, an electrorheological body 17 is in electric signal connection with a driving power supply and a remote terminal, and a rotating shaft 2 is electrically connected with the driving power supply and a copper bar; at the moment, the sliding block 11 moves under the action of the first spring 13 to drive the connecting rod 12 to move, so that the gear 18 loses an external limiting effect, an operator controls a driving power supply to not supply power to the current transformer 17 through remote equipment, the current transformer 17 is further changed into a liquid state, the movable block 16 moves under the action of the third spring, the ratchet wheel 15 loses the limitation of the movable block 16, the driving power supply drives the rotating shaft 2 to rotate due to the change of the current in the copper rod, the rotating shaft 2 rotates to drive the gear 18 to rotate, the gear 18 rotates to drive the toothed rod 19 to move, and the safe box can be opened.
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 (7)
1. An anti-theft device of intelligent safe based on current variant, includes shell (1) and pivot (2), its characterized in that: the internal swing joint of the shell (1) is provided with an N pole (3), the internal swing joint of the shell (1) is provided with an S pole (4), the internal swing joint of the shell (1) is provided with a movable rod (5), the external swing joint of the shell (1) is provided with a knob (6), the external swing joint of the knob (6) is provided with a bevel gear (7), the external swing joint of the bevel gear (7) is provided with a thread groove (8), the internal swing joint of the thread groove (8) is provided with a threaded rod (9), the external fixed connection of the threaded rod (9) is provided with a mandril (10), the internal swing joint of the shell (1) is provided with a slide block (11), the internal swing joint of the shell (1) is provided with a connecting rod (12), the external swing joint of the connecting rod (12) is provided with a first spring (13), the internal fixed, the outside of the ratchet wheel (15) is movably connected with a movable block (16), the outside of the movable block (16) is movably connected with an electrorheological body (17), the outside of the rotating shaft (2) is fixedly connected with a gear (18), and the outside of the gear (18) is movably connected with a rack (19).
2. The anti-theft device of an intelligent safe based on an electrorheological fluid, according to claim 1, characterized in that: pivot (2) swing joint is in the inside of shell (1), and the specification phase-match of the utmost point of N (3) and the utmost point of S (4), the outside swing joint of movable rod (5) has spring two, and the outside swing joint of spring two is in the outside of shell (1), and the outside swing joint of movable rod (5) has the bar copper, the specification and the utmost point of N (3), the utmost point of S (4) phase-match of bar copper.
3. The anti-theft device of an intelligent safe based on an electrorheological fluid, according to claim 1, characterized in that: the outside fixedly connected with bevel gear (7) of thread groove (8), this bevel gear (7) and the outside bevel gear (7) meshing of knob (6), the specification and the movable rod (5) phase-match of ejector pin (10), the outside and slider (11) swing joint and specification phase-match of ejector pin (10).
4. The anti-theft device of an intelligent safe based on an electrorheological fluid, according to claim 1, characterized in that: the outer portion of the sliding block (11) and the outer portion of the connecting rod (12) are both provided with friction layers, the number of the connecting rods (12) is two, and two ends of the first spring (13) are movably connected to the outer portions of the two connecting rods (12) respectively.
5. The anti-theft device of an intelligent safe based on an electrorheological fluid, according to claim 1, characterized in that: pivot (2) swing joint is in the inside of fixed pipe (14), and movable block (16) swing joint is in the outside of fixed pipe (14), and the outside swing joint of movable block (16) has spring three, and spring three's outside swing joint is in the inside of shell (1), and current variant (17) swing joint is in the inside of shell (1).
6. The anti-theft device of an intelligent safe based on an electrorheological fluid, according to claim 1, characterized in that: the outer parts of the connecting rod (12) and the sliding block (11) are movably connected with the gear (18), and the toothed bar (19) is movably connected inside the shell (1).
7. The anti-theft device of an intelligent safe based on an electrorheological fluid, according to claim 1, characterized in that: the current transformer (17) is in electrical signal connection with the driving power supply and the remote terminal, the rotating shaft (2) is in electrical connection with the driving power supply and the copper bar, and the knob (6) is in electrical connection with the driving power supply and the remote terminal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202010415202.8A CN111395914A (en) | 2020-05-15 | 2020-05-15 | Anti-theft device of intelligent safe based on current variant |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202010415202.8A CN111395914A (en) | 2020-05-15 | 2020-05-15 | Anti-theft device of intelligent safe based on current variant |
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Publication Number | Publication Date |
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CN111395914A true CN111395914A (en) | 2020-07-10 |
Family
ID=71435661
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CN202010415202.8A Withdrawn CN111395914A (en) | 2020-05-15 | 2020-05-15 | Anti-theft device of intelligent safe based on current variant |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111827789A (en) * | 2020-07-22 | 2020-10-27 | 黄倩 | Intelligent mechanical integrated safety anti-theft lock |
CN112147479A (en) * | 2020-09-15 | 2020-12-29 | 南京祠盛资电子商务有限公司 | Energy-saving and environment-friendly light-emitting diode detection device using current transformer |
CN112160675A (en) * | 2020-09-28 | 2021-01-01 | 罗义鑫 | Intelligent circuit manufacturing safe box device based on current variant |
CN112197131A (en) * | 2020-09-08 | 2021-01-08 | 齐世松 | Camera support protection device based on balance principle |
CN112644842A (en) * | 2020-10-27 | 2021-04-13 | 李悌坚 | Corrugated carton capable of increasing structural strength |
-
2020
- 2020-05-15 CN CN202010415202.8A patent/CN111395914A/en not_active Withdrawn
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111827789A (en) * | 2020-07-22 | 2020-10-27 | 黄倩 | Intelligent mechanical integrated safety anti-theft lock |
CN112197131A (en) * | 2020-09-08 | 2021-01-08 | 齐世松 | Camera support protection device based on balance principle |
CN112147479A (en) * | 2020-09-15 | 2020-12-29 | 南京祠盛资电子商务有限公司 | Energy-saving and environment-friendly light-emitting diode detection device using current transformer |
CN112147479B (en) * | 2020-09-15 | 2021-09-07 | 朱丽云 | Energy-saving and environment-friendly light-emitting diode detection device using current transformer |
CN112160675A (en) * | 2020-09-28 | 2021-01-01 | 罗义鑫 | Intelligent circuit manufacturing safe box device based on current variant |
CN112644842A (en) * | 2020-10-27 | 2021-04-13 | 李悌坚 | Corrugated carton capable of increasing structural strength |
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Application publication date: 20200710 |
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