CN113668955B - Anti-theft lock based on resistance change - Google Patents
Anti-theft lock based on resistance change Download PDFInfo
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- CN113668955B CN113668955B CN202110847478.8A CN202110847478A CN113668955B CN 113668955 B CN113668955 B CN 113668955B CN 202110847478 A CN202110847478 A CN 202110847478A CN 113668955 B CN113668955 B CN 113668955B
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- 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
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- 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
- E05B2047/0072—Operation
- E05B2047/0073—Current to unlock only
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- 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
- E05B2047/0084—Key or electric means; Emergency release
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- Lock And Its Accessories (AREA)
Abstract
The invention belongs to the technical field of locks, in particular to an anti-theft lock based on resistance change, which comprises a lock cylinder shell, wherein the inner side of one end of the lock cylinder shell is in contact connection with a resistance key, the resistance key comprises a key limiting wafer, a key handle, a plastic key rod, a key outer cladding, an insulating semicircular shell, a resistor sheet group, a conductive wafer, a second lead, a pure copper conductive block and a limiting plug-in connector, the inner side of the top end of the lock cylinder shell is fixedly connected with a power connection device, the number of the power connection devices is four, the power connection device comprises an insulating shell, an installation top cover, a hollow conductive ring, a third lead, a compression spring, a sliding hollow ring and a pure copper spring head, the inner side of the right end of the lock cylinder shell is fixedly connected with an angle sensor, the tail end of a main shaft of the angle sensor is fixedly connected with a clamping rotating head, and the device has the function of determining the rotating angle of the resistance key, and the function of returning the clamping rotating head to the original position after the key is pulled out can be realized.
Description
Technical Field
The invention belongs to the technical field of locks, and particularly relates to an anti-theft lock based on resistance change.
Background
Most of traditional locks are mechanical locks, the mechanical locks are full-mechanical coded locks without electronic devices, the full-mechanical coded locks are mainly unlocked in a matching mode through the stretching of marbles in lock cores, and the mutual unlocking rate of the locks unlocked through keys is high, so that the safety is not high.
At present, the mechanical lock has a high popularization rate, and the internal structure of the mechanical lock can be unlocked in a technical unlocking mode, so that the traditional mechanical lock is low in safety and has certain potential safety hazards.
Therefore, the present application proposes an anti-theft lock based on resistance change.
Disclosure of Invention
To solve the problems set forth in the background art described above. The invention provides an anti-theft lock based on resistance change, which has the characteristic of unlocking through a resistor.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an anti-theft lock based on resistance change, includes the lock core shell, the inboard contact of one end of lock core shell is connected with the resistance key, the resistance key is including the spacing disk of key, key handle, plastics key stick, key surrounding layer, insulating semicircle shell, resistor piece group, electrically conductive disk, second wire, pure copper conducting block, spacing bayonet joint, the inboard fixedly connected with of top of lock core shell connects electric installation, and connects electric installation's quantity to be four, connect electric installation including insulating shell, installation top cap, hollow conducting ring, third wire, compression spring, slip hollow circle, pure copper bullet head, the inboard fixedly connected with angle sensor of right-hand member of lock core shell, angle sensor's the terminal fixedly connected with block rotor head of main shaft.
Preferably, as for the anti-theft lock based on resistance change, a bearing is fixedly connected to the outer side of one end of the clamping rotating head, the outer side of one end of the bearing is fixedly connected with the inner side of the right end of the lock cylinder shell, a limit sliding block is fixedly connected to the outer side of the top end of the clamping rotating head, the outer side of one end of the limit sliding block is in sliding contact with the inner side of the right end of the lock cylinder shell, a hollow cylindrical shell is fixedly connected to the outer side of the right end of the clamping rotating head, a coil spring is fixedly connected to the outer side of one end of the hollow cylindrical shell, and the outer side of the bottom end of the coil spring is fixedly connected with the inner side of the right end of the lock cylinder shell.
As an optimization of the anti-theft lock based on resistance change, the inner side of the right end of the lock cylinder shell is fixedly connected with a fixed limiting block, the inner side of the bottom end of the clamping rotating head is fixedly connected with an elastic copper sheet, the outer side of the bottom end of the elastic copper sheet is fixedly connected with a first lead, the outer side of the right end of the first lead is fixedly connected with a lead outer cladding, the outer side of one end of the lead outer cladding is wound around the outer side of the main shaft of the angle sensor, and the outer side of the right end of the lead outer cladding is fixedly connected with the inner side of the right end of the lock cylinder shell.
Preferably, the key handle is fixedly connected to the outer side of the left end of the key limiting wafer, the plastic key rod is fixedly connected to the outer side of the right end of the key limiting wafer, the key outer cladding is fixedly connected to the outer side of one end of the plastic key rod, the outer end face of one end of the key outer cladding is in rotating contact with the inner wall face of one end of the lock cylinder shell, the insulating semicircular shell is fixedly connected to the inner side of one end of the key outer cladding, and the inner wall face of one end of the insulating semicircular shell is fixedly connected with the outer end face of one end of the plastic key rod.
As an optimal preference for the anti-theft lock based on resistance change, the inner side of one end of the insulating semicircular shell is fixedly connected with four resistor sheets, and the resistance values of the resistor sheets of each of the four groups of the resistor sheets are different.
As a preferable preference of the anti-theft lock based on resistance change, the outer side of the bottom end of the resistor group is fixedly connected with a conductive wafer, the outer side of the front end of the conductive wafer is fixedly connected with a second lead, the outer side of one end of the second lead is fixedly connected with the inner side of the bottom end of the insulating semicircular shell, the lower side of the right end of the second lead is fixedly connected with a pure copper conductive block, the outer side of the bottom end of the pure copper conductive block is in contact connection with the outer side of the top end of the elastic copper sheet, the outer side of one end of the pure copper conductive block is fixedly connected with a limiting plug-in connector, the outer side of the left end of the limiting plug-in connector is fixedly connected with the outer side of the right end of the plastic key bar, and the outer side of the right end of the limiting plug-in clamping contact with the inner side of one end of the clamping rotary head.
Preferably, the anti-theft lock based on resistance change is characterized in that an installation top cover is fixedly connected to the inner side of the top end of the insulating shell, a hollow conductive ring is fixedly connected to the inner side of one end of the insulating shell, a third wire is fixedly connected to the outer side of the right end of the hollow conductive ring, the outer side of the left end of the third wire is fixedly connected to the inner side of the right end of the insulating shell, and a compression spring is fixedly connected to the outer side of the bottom end of the hollow conductive ring.
Preferably, the outer side of the bottom end of the compression spring is fixedly connected with a sliding hollow ring, the outer end face of one end of the sliding hollow ring is in sliding contact with the inner wall face of one end of the insulating shell, the inner wall face of one end of the sliding hollow ring is fixedly connected with a pure copper marble head, the outer end face of one end of the pure copper marble head is in sliding contact with the inner wall face of one end of the hollow conductive ring, the outer side of the bottom end of the pure copper marble head is in sliding contact with the inner side of the bottom end of the insulating shell, and the outer side of the bottom end of the pure copper marble head is in contact connection with the outer side of the top end of the resistor group.
Compared with the prior art, the invention has the beneficial effects that:
1. the device is unlocked in a mode of changing current through the resistor, each resistor in the resistor group is made of resistors with different resistors, so that when the resistor group serves as a sliding rheostat to output current, the output current data are irregular, unlocking can be controlled through a method of matching the current data, the resistor key is difficult to imitate by other people, the safety is high, no marble is arranged in the device, and unlocking cannot be performed through a traditional unlocking method.
2. The device can ensure that the pure copper pin tumbler head is stably electrically connected with the resistor group through the arranged power connection device, thereby improving the stability during unlocking.
3. The device has the function of determining the rotation angle of the resistance key, and can return the clamping rotation head to the original position after the key is pulled out.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the overall structure of the resistance key according to the present invention;
FIG. 3 is a cross-sectional view of the overall construction of the present invention;
FIG. 4 is a sectional view showing the entire structure of the resistance key according to the present invention;
FIG. 5 is a sectional view showing the entire structure of the power connecting device according to the present invention;
FIG. 6 is a schematic view of the mounting structure of the engaging rotary head according to the present invention;
FIG. 7 is a left side view of the mounting structure of the limit slider in the present invention;
FIG. 8 is a schematic view of the structure of FIG. 3 at A in accordance with the present invention;
FIG. 9 is a schematic view of the structure of FIG. 4 at B in the present invention;
FIG. 10 is a schematic view of the structure of FIG. 6 at C in accordance with the present invention;
FIG. 11 is a schematic view of the structure of FIG. 6 at D in the present invention;
FIG. 12 is a schematic view of the structure at E in FIG. 6 according to the present invention.
In the figure: 1. a lock cylinder housing; 2. a resistance key; 201. limiting a wafer by a key; 202. a key handle; 203. a plastic key bar; 204. a key overwrap; 205. an insulating semicircular shell; 206. a resistor group; 207. a conductive wafer; 208. a second conductive line; 209. a pure copper conductive block; 210. a limiting plug-in connector; 3. a power connection device; 301. an insulating housing; 302. installing a top cover; 303. a hollow conductive ring; 304. a third conductive line; 305. a compression spring; 306. sliding the hollow ring; 307. a pure copper bullet head; 4. an angle sensor; 5. clamping the rotating head; 6. a bearing; 7. a limiting sliding block; 8. a hollow cylindrical shell; 9. a coil spring; 10. fixing a limiting block; 11. an elastic copper sheet; 12. a first conductive line; 13. a wire outer cladding.
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.
The utility model provides an anti-theft lock based on resistance change, includes lock core shell 1, and the inboard contact of one end of lock core shell 1 is connected with resistance key 2, and resistance key 2 is including the spacing wafer 201 of key, key handle 202, plastics key stick 203, key surrounding layer 204, insulating semicircle shell 205, resistance sheet group 206, conductive wafer 207, second wire 208, pure copper conducting block 209, spacing bayonet joint 210, the inboard fixedly connected with of top of lock core shell 1 connects electric installation 3, and connects electric installation 3's quantity four, connects electric installation 3 including insulating housing 301, installation top cap 302, hollow conducting ring 303, third wire 304, compression spring 305, slip hollow ring 306, pure copper bullet head 307, and the inboard fixedly connected with angle sensor 4 of right-hand member of lock core shell 1, the terminal fixedly connected with block of main shaft of angle sensor 4 rotates the head 5.
In this embodiment: the resistance key 2 will drive the limit plug 210 to insert into the inner side of the engaging rotary head 5.
In an alternative embodiment, a bearing 6 is fixedly connected to the outer side of one end of the clamping rotating head 5, the outer side of one end of the bearing 6 is fixedly connected to the inner side of the right end of the lock cylinder housing 1, a limit sliding block 7 is fixedly connected to the outer side of the top end of the clamping rotating head 5, the outer side of one end of the limit sliding block 7 is in sliding contact with the inner side of the right end of the lock cylinder housing 1, a hollow cylindrical shell 8 is fixedly connected to the outer side of the right end of the clamping rotating head 5, a coil spring 9 is fixedly connected to the outer side of one end of the hollow cylindrical shell 8, and the outer side of the bottom end of the coil spring 9 is fixedly connected to the inner side of the right end of the lock cylinder housing 1.
In this embodiment: the block swivel head 5 can drive the limiting sliding block 7 to rotate, and after the limiting sliding block 7 rotates 180 degrees, the limiting sliding block 7 can contact with the fixed limiting block 10, so that the block swivel head 5 can only rotate 180 degrees, and the block swivel head 5 can drive the hollow cylindrical shell 8 to rotate when rotating, and the elasticity of the coil spring 9 can be overcome when the hollow cylindrical shell 8 rotates to rotate.
In an optional embodiment, the inner side of the right end of the lock cylinder housing 1 is fixedly connected with a fixed limiting block 10, the inner side of the bottom end of the clamping rotating head 5 is fixedly connected with an elastic copper sheet 11, the outer side of the bottom end of the elastic copper sheet 11 is fixedly connected with a first lead 12, the outer side of the right end of the first lead 12 is fixedly connected with a lead outer cladding 13, the outer side of one end of the lead outer cladding 13 is wound on the outer periphery of the main shaft of the angle sensor 4, and the outer side of the right end of the lead outer cladding 13 is fixedly connected with the inner side of the right end of the lock cylinder housing 1.
In this embodiment: by winding the outer side of one end of the conducting wire outer cladding 13 around the outer side of the main shaft of the angle sensor 4, the conducting wire outer cladding 13 can not block the rotation of the clamping rotating head 5 when the clamping rotating head 5 rotates 180 degrees.
In an alternative embodiment, a key handle 202 is fixedly connected to the outside of the left end of the key limiting disc 201, a plastic key rod 203 is fixedly connected to the outside of the right end of the key limiting disc 201, a key outer covering layer 204 is fixedly connected to the outside of one end of the plastic key rod 203, the outer end face of one end of the key outer covering layer 204 is in rotational contact with the inner wall face of one end of the lock cylinder housing 1, an insulating semicircular housing 205 is fixedly connected to the inside of one end of the key outer covering layer 204, and the inner wall face of one end of the insulating semicircular housing 205 is fixedly connected with the outer end face of one end of the plastic key rod 203.
In this embodiment: whether the resistance key 2 is completely inserted into the inner side of the lock cylinder shell 1 can be easily known through the arranged key limiting wafer 201.
In an alternative embodiment, the resistor groups 206 are fixedly connected to the inner side of one end of the insulating semicircular casing 205, the number of the resistor groups 206 is four, and the resistance values of each resistor of the resistor groups 206 in each of the four groups are different.
In this embodiment: the resistor sheets with different resistances in the resistor sheet set 206 are arranged in different distributions, and if the arrangement sequence of the resistor sheets in each resistor sheet set 206 is unique, there will be a certain current curve and different from other current curves.
In an optional embodiment, a conductive wafer 207 is fixedly connected to the outer side of the bottom end of the resistor group 206, a second conducting wire 208 is fixedly connected to the outer side of the front end of the conductive wafer 207, the outer side of one end of the second conducting wire 208 is fixedly connected to the inner side of the bottom end of the insulating semicircular shell 205, a pure copper conducting block 209 is fixedly connected to the lower side of the right end of the second conducting wire 208, the outer side of the bottom end of the pure copper conducting block 209 is in contact connection with the outer side of the top end of the elastic copper sheet 11, a limit plug 210 is fixedly connected to the outer side of one end of the pure copper conducting block 209, the outer side of the left end of the limit plug 210 is fixedly connected to the outer side of the right end of the plastic key stick 203, and the outer side of the right end of the limit plug 210 is in snap contact with the inner side of one end of the snap rotating head 5.
In this embodiment: because the elastic copper sheet 11 has certain elasticity, the elastic copper sheet 11 can be stably contacted with the pure copper conductive block 209.
In an alternative embodiment, a mounting cap 302 is fixedly connected to the inner side of the top end of the insulating housing 301, a hollow conductive ring 303 is fixedly connected to the inner side of one end of the insulating housing 301, a third conductive wire 304 is fixedly connected to the outer side of the right end of the hollow conductive ring 303, the outer side of the left end of the third conductive wire 304 is fixedly connected to the inner side of the right end of the insulating housing 301, and a compression spring 305 is fixedly connected to the outer side of the bottom end of the hollow conductive ring 303.
In this embodiment: the hollow conductive ring 303 is electrically connected with the third conductive wire 304, so that the pure copper bullet head 307 can be electrically connected with the third conductive wire 304 through the hollow conductive ring 303.
In an alternative embodiment, a sliding hollow ring 306 is fixedly connected to the outer side of the bottom end of the compression spring 305, an outer end face of one end of the sliding hollow ring 306 is in sliding contact with an inner wall face of one end of the insulating housing 301, an inner wall face of one end of the sliding hollow ring 306 is fixedly connected with a pure copper pin head 307, an outer end face of one end of the pure copper pin head 307 is in sliding contact with an inner wall face of one end of the hollow conductive ring 303, an outer side of the bottom end of the pure copper pin head 307 is in sliding contact with an inner side of the bottom end of the insulating housing 301, and an outer side of the bottom end of the pure copper pin head 307 is in contact connection with an outer side of the top end of the resistor group 206.
In this embodiment: the compression spring 305 drives the sliding hollow ring 306 and thus the pure copper pin head 307 to move downward, so that the pure copper pin head 307 is stably contacted with the resistor group 206.
The working principle and the using process of the invention are as follows: when the resistance key 2 is completely inserted into the inner side of the lock cylinder shell 1, and the resistance key 2 is inserted into the inner side of the lock cylinder shell 1, the resistance key 2 can drive the limit plug-in connector 210 to be inserted into the inner side of the clamping rotary head 5, if the position of the limit plug-in connector 210 inserted into the clamping rotary head 5 is correct, the resistance key 2 can be completely inserted into the inner side of the lock cylinder shell 1, and the key limit wafer 201 is in contact with the outer side of the left end of the lock cylinder shell 1, the resistance key 2 can drive the pure copper conductive block 209 to be in contact with the elastic copper sheet 11, the resistance key 2 can drive the resistance sheet group 206 to be in contact with the pure copper spring head 307, the compression spring 305 can drive the sliding hollow ring 306 to drive the pure copper spring head 307 to move downwards, so that the pure copper spring head 307 is stably in contact with the resistance sheet group 206, the resistance key 2 can drive the resistance sheet group 206 to rotate, and the position of the resistance sheet group 206 in contact with the pure copper spring head 307 changes in the rotating process, when current is introduced from the third wire 304, the current passes through the third wire 304 and sequentially passes through the hollow conductive ring 303, the pure copper pin head 307, the resistor group 206, the conductive wafer 207, the second wire 208, the pure copper conductive block 209, the elastic copper sheet 11 and the first wire 12, so that the current finally flows out through the first wire 12, the tail end of the first wire 12 is electrically connected with an external current detection device, and since the position of the resistor group contacting with the pure copper pin head 307 changes in the rotation process of the resistor group, the current finally output through the first wire 12 changes, and since the resistance values of each resistor sheet arranged in the resistor group 206 are different, when the resistance key 2 is ideally rotated at a constant speed, the curve of the current change output through the first wire 12 is determined according to the distribution of each resistor sheet in the resistor group 206, so in theory, the resistor discs with different resistance values in the resistor disc sets 206 are distributed differently, if the arrangement sequence of the resistor discs in each resistor disc set 206 is unique, a certain current data set is different from other current data sets, unlocking can be realized by comparing the current data sets, and when unlocking is carried out, the electronic lock needs to be matched with other electronic locks to enable a motor in the electronic lock to work to drive a lock tongue to contract, so that unlocking is realized, in the actual work of the device, the speed of rotating the resistor key 2 cannot be absolutely uniform, when the resistor key 2 drives the limiting plug-in connector 210 to rotate, the limiting plug-in connector 210 drives the clamping rotating head 5 to rotate, the rotating angle of the clamping rotating head 5 is detected by the angle sensor 4, the determined angle of rotation through the angle sensor 4 is a recording point, for example, when the angle sensor 4 rotates by 0.5 degree, the external controller can control the external current detection device to detect the current value output from the first lead 12 once, and since the current value recorded at each angle is determined, a determined current data set can be obtained for the scale through the rotation angle, the current data set is not affected by the speed of rotating the resistance key 2 and whether the current data set is uniform, when the resistance key 2 rotates to drive the limit plug-in connector 210 to drive the clamping rotating head 5 to rotate, the clamping rotating head 5 can stably rotate through the bearing 6, the clamping rotating head 5 can drive the limit sliding block 7 to rotate, after the limit sliding block 7 rotates 180 degrees, the limit sliding block 7 can contact with the fixed limit block 10, so that the clamping rotating head 5 can only rotate 180 degrees, and the clamping rotating head 5 can drive the hollow cylindrical shell 8 to rotate when rotating, and the hollow cylindrical shell 8 can rotate by overcoming the elasticity of the coil spring 9, therefore, when the resistance key 2 does not drive the clamping rotating head 5 to rotate, the coil spring 9 can drive the hollow cylindrical shell 8 to drive the clamping rotating head 5 to rotate and return to the original position, in the actual use process, the temperature can gradually change in the process from summer to winter or from winter to summer, so that the resistance value of the resistor group 206 can slightly change, the limit plug-in connector 210 is plugged with the clamping rotating head 5 for a plurality of times, the gap between the limit plug-in connector 210 and the clamping rotating head 5 can be gradually increased, the limit sliding block 7 can be worn after being used for a long time, the position between the limit sliding block 7 and the lock cylinder shell 1 can slightly change, so that the initial position of the limit sliding block 7 is advanced, the current output through the first lead 12 can be changed by the above changes, but the change is slow and slight, in order to solve the problem, after the lock is successfully unlocked each time, the drawn current graph is used as new matching standard data, the matching current data of the next time is close to the current data of the last time, and an error in a certain range is allowed and can be determined according to the wear-resistant degree of the material used in the actual production of the device.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. The utility model provides an pickproof lock based on resistance change, includes lock core shell (1), its characterized in that: the inner side of one end of the lock cylinder shell (1) is connected with a resistance key (2) in a contact mode, the resistance key (2) comprises a key limiting wafer (201), a key handle (202), a plastic key rod (203), a key outer cladding (204), an insulating semicircular shell (205), a resistor group (206), a conductive wafer (207), a second lead (208), a pure copper conductive block (209) and a limiting plug-in connector (210), the inner side of the top end of the lock cylinder shell (1) is fixedly connected with an electric connection device (3), the number of the electric connection devices (3) is four, each electric connection device (3) comprises an insulating shell (301), an installation top cover (302), a hollow conductive ring (303), a third lead (304), a compression spring (305), a sliding hollow ring (306) and a pure copper pin head (307), and the inner side of the right end of the lock cylinder shell (1) is fixedly connected with an angle sensor (4), the tail end of a main shaft of the angle sensor (4) is fixedly connected with a clamping rotating head (5);
the outer side of one end of the clamping rotating head (5) is fixedly connected with a bearing (6), the outer side of one end of the bearing (6) is fixedly connected with the inner side of the right end of the lock cylinder shell (1), the outer side of the top end of the clamping rotating head (5) is fixedly connected with a limiting sliding block (7), the outer side of one end of the limiting sliding block (7) is in sliding contact with the inner side of the right end of the lock cylinder shell (1), the outer side of the right end of the clamping rotating head (5) is fixedly connected with a hollow cylindrical shell (8), the outer side of one end of the hollow cylindrical shell (8) is fixedly connected with a coil spring (9), the outer side of the bottom end of the coil spring (9) is fixedly connected with the inner side of the right end of the lock cylinder shell (1), the inner side of the right end of the lock cylinder shell (1) is fixedly connected with a fixed limiting block (10), the inner side of the bottom end of the clamping rotating head (5) is fixedly connected with an elastic copper sheet (11), and the outer side of the bottom end of the elastic copper sheet (11) is fixedly connected with a first lead (12), the outer side of the right end of the first lead (12) is fixedly connected with a lead outer cladding (13), the outer side of one end of the lead outer cladding (13) is wound on the outer side of a spindle of the angle sensor (4) for a circle, the outer side of the right end of the lead outer cladding (13) is fixedly connected with the inner side of the right end of the lock cylinder shell (1), the outer side of the left end of the key limiting wafer (201) is fixedly connected with a key handle (202), the outer side of the right end of the key limiting wafer (201) is fixedly connected with a plastic key rod (203), the outer side of one end of the plastic key rod (203) is fixedly connected with a key outer cladding (204), the outer end face of one end of the key outer cladding (204) is in rotating contact with the inner wall face of one end of the lock cylinder shell (1), the inner side of one end of the key outer cladding (204) is fixedly connected with an insulating semicircular shell (205), and the inner wall face of one end of the insulating semicircular shell (205) is fixedly connected with the outer end face of one end of the plastic key rod (203), the inner side of one end of the insulating semicircular shell (205) is fixedly connected with four resistor groups (206), the resistance values of each resistor group (206) in each of the four groups are different, the outer side of the bottom end of each resistor group (206) is fixedly connected with a conductive wafer (207), the outer side of the front end of the conductive wafer (207) is fixedly connected with a second lead (208), the outer side of one end of the second lead (208) is fixedly connected with the inner side of the bottom end of the insulating semicircular shell (205), the lower side of the right end of the second lead (208) is fixedly connected with a pure copper conductive block (209), the outer side of the bottom end of the pure copper conductive block (209) is in contact connection with the outer side of the top end of the elastic copper sheet (11), the outer side of one end of the pure copper block (209) is fixedly connected with a limiting plug-in head (210), and the outer side of the left end of the limiting plug-in head (210) is fixedly connected with the outer side of the right end of the plastic key bar (203), the outer side of the right end of the limiting plug connector (210) is in clamping contact with the inner side of one end of the clamping rotating head (5), the inner side of the top end of the insulating shell (301) is fixedly connected with an installation top cover (302), the inner side of one end of the insulating shell (301) is fixedly connected with a hollow conductive ring (303), the outer side of the right end of the hollow conductive ring (303) is fixedly connected with a third lead (304), the outer side of the left end of the third lead (304) is fixedly connected with the inner side of the right end of the insulating shell (301), the outer side of the bottom end of the hollow conductive ring (303) is fixedly connected with a compression spring (305), the outer side of the bottom end of the compression spring (305) is fixedly connected with a sliding hollow ring (306), the outer end face of one end of the sliding hollow ring (306) is in sliding contact with the inner wall face of one end of the insulating shell (301), and the inner wall face of one end of the sliding hollow ring (306) is fixedly connected with a pure copper elastic head (307), and the outer end face of one end of the pure copper marble head (307) is in sliding contact with the inner wall face of one end of the hollow conductive ring (303), the outer side of the bottom end of the pure copper marble head (307) is in sliding contact with the inner side of the bottom end of the insulating shell (301), and the outer side of the bottom end of the pure copper marble head (307) is in contact connection with the outer side of the top end of the resistor group (206).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110847478.8A CN113668955B (en) | 2021-07-27 | 2021-07-27 | Anti-theft lock based on resistance change |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110847478.8A CN113668955B (en) | 2021-07-27 | 2021-07-27 | Anti-theft lock based on resistance change |
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| CN113668955A CN113668955A (en) | 2021-11-19 |
| CN113668955B true CN113668955B (en) | 2022-07-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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