CN111927212A - Cashbox coded lock code disordering device - Google Patents
Cashbox coded lock code disordering device Download PDFInfo
- Publication number
- CN111927212A CN111927212A CN202010780160.8A CN202010780160A CN111927212A CN 111927212 A CN111927212 A CN 111927212A CN 202010780160 A CN202010780160 A CN 202010780160A CN 111927212 A CN111927212 A CN 111927212A
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- CN
- China
- Prior art keywords
- connecting rod
- driven gear
- coded lock
- gear
- lock
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- 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.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B37/00—Permutation or combination locks; Puzzle locks
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B37/00—Permutation or combination locks; Puzzle locks
- E05B37/0075—Automatic scrambling
- E05B37/0082—Automatic scrambling when locking
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- Lock And Its Accessories (AREA)
Abstract
The invention discloses a cashbox coded lock code scrambler, and relates to the technical field of financial security equipment. The invention comprises an upper cover, a base and a coded lock body, wherein the upper surface of the base is fixedly connected with the lower surface of the upper cover through screws, a plurality of fixing screws are in threaded connection between the lower surface of the base and the coded lock body, the lower surface of the coded lock body is rotatably connected with a coded lock connecting rod, and the lower end of the coded lock connecting rod is fixedly connected with a coded rotary table; the shaft sleeve is used, so that the friction is reduced, and the service life is prolonged; according to the invention, the first movable connecting rod and the first connecting rod spring are used, so that the first movable connecting rod can slide in a reciprocating manner in the main shaft under the action of the first connecting rod pressure spring, and the position of the first movable connecting rod in the main shaft mounting groove is automatically adjusted according to the length of the coded lock connecting rod, thereby achieving the purpose of being compatible with different coded locks for matched use; the invention reduces the unlocking resistance by using the electromagnet and the sliding bracket.
Description
Technical Field
The invention belongs to the technical field of financial security equipment, and particularly relates to a cashbox coded lock code scrambler.
Background
The coded lock is one kind of lock with serial numbers or symbols for unlocking, and may be mechanical coded lock, digital coded lock, etc. The combination of a combination lock is usually only permutation and not a true combination. Part of the coded lock only uses a turntable to rotate a plurality of discs or cams in the lock; some combination locks also rotate a set of several dial rings with numbers engraved on them to directly drive the internal mechanism of the lock.
However, the conventional code messing device for the combination lock cannot be installed and transformed in a manner of being compatible with various combination locks, the combination is difficult to align due to inertia of a motor when the combination is opened, and a large torsion force is required to rotate a combination lock disc.
Disclosure of Invention
The invention aims to provide a cashbox coded lock code scrambler, which solves the problems that the existing coded lock code scrambler cannot realize the installation and transformation of compatible various coded locks, the codes are difficult to align due to the inertia of a motor when the codes are opened, and a coded lock disc can be rotated only by large torsion.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a cashbox coded lock code scrambler, which comprises an upper cover, a base and a coded lock body;
the upper surface of the base is fixedly connected with the lower surface of the upper cover through screws, a plurality of fixing screws are in threaded connection between the lower surface of the base and the coded lock body, the lower surface of the coded lock body is rotatably connected with a coded lock connecting rod, and the lower end of the coded lock connecting rod is fixedly connected with a coded rotary disc; in the structure, when the password is required to be opened, the password turntable is rotated to drive the connecting rod of the password lock to rotate, so that the internal parts of the device are driven to move, and the lock is unlocked.
The coded lock comprises a coded lock body, a coded lock connecting rod, a coded lock thumb wheel, a first movable connecting rod, a main shaft, a base and a first connecting rod pressing spring, wherein the coded lock connecting rod penetrates through the coded lock body, one end of the coded lock connecting rod is fixedly connected with the coded lock thumb wheel, the upper surface of the coded lock thumb wheel is fixedly connected with the first movable connecting rod, the upper side of the first movable connecting rod is provided with the main shaft, the main shaft is installed in the base, the lower end surface of the main shaft is provided with an installation groove, the first movable connecting rod is in sliding fit; in the structure, the coded lock thumb wheel can be driven to rotate when the coded lock connecting rod rotates, then the coded lock thumb wheel can drive the first movable connecting rod to rotate, then the first movable connecting rod drives the main shaft to rotate, and the first movable connecting rod can slide in the main shaft in a reciprocating manner under the action of the first connecting rod pressure spring, and the position of the coded lock thumb wheel in the main shaft mounting groove can be automatically adjusted according to the length of the coded lock connecting rod, so that the coded lock can be matched with different coded locks for use.
Preferably, a password lock tongue is connected to one surface of the password lock body in a sliding manner; in the structure, the safe or other safety equipment can be locked by the sliding of the password lock tongue in the password lock body.
Preferably, a gear support plate is further arranged between the upper cover and the base, and the gear support plate is fixedly connected with the base through screws; in the above structure, the gear support plate is an important carrier for mounting the gear.
Preferably, the upper surface of the gear support plate is fixedly connected with a first rotating shaft, a second rotating shaft and a third rotating shaft, the circumferential side surface of the first rotating shaft is rotationally connected with a first driven gear, the circumferential side surface of the second rotating shaft is rotationally connected with a second driven gear, the circumferential side surface of the third rotating shaft is rotationally connected with a third driven gear, the first driven gear is meshed with the second driven gear, the second driven gear is meshed with the third driven gear, and the circumferential side surface of the third driven gear is meshed with a fourth driven gear; in the above structure, due to the transmission characteristics of the gear piece, when the fourth driven gear or the first driven gear rotates, other gears also rotate along with the fourth driven gear or the first driven gear, and the rotating speeds of the gears are different due to different modules of the gears.
Preferably, the fourth driven gear is mounted on the peripheral side surface of the main shaft, and the fourth driven gear is fixedly connected with the main shaft; in the above structure, when the main shaft rotates, the fourth driven gear also rotates along with the main shaft.
Preferably, a sliding support is mounted on the lower surface of the gear support plate, a driving motor is mounted on the lower surface of the sliding support, a motor gear is fixedly connected to the upper end of the driving motor, the motor gear is meshed with the first driven gear, a positioning pin and a sliding pin are connected between the sliding support and the gear support plate, and the positioning pin is located on one side far away from the sliding pin; in the structure, the driving motor can drive the motor gear to rotate, then the motor gear can drive the first driven gear to rotate, and in addition, the sliding support can slide in a certain angle through the sliding pin.
Preferably, the lower surface of the gear support plate is further provided with an electromagnet, one surface of the electromagnet is connected with a second movable connecting rod in a sliding manner, one end of the second movable connecting rod is connected with the sliding support through a hinge, and the peripheral side surface of the second movable connecting rod is further provided with a second connecting rod pressure spring; in the structure, at ordinary times, because the electromagnet is not electrified, the sliding support and the second movable connecting rod separate the motor gear from the first driven gear under the pushing of the second connecting rod pressure spring, so that the driving motor is not driven to rotate along with the first driven gear when the password turntable is rotated to match the password, and the password is easily matched without inertia.
Preferably, the peripheral side surface of the main shaft is further provided with a shaft sleeve for protecting the main shaft.
The invention has the following beneficial effects:
1. according to the invention, by using the shaft sleeve, when the safe door is closed, the code scrambler circuit is triggered to drive the driving motor to rotate at a high speed, and through the meshing among the motor gear, the first driven gear, the second driven gear, the third driven gear, the fourth driven gear and the main shaft, the speed is reduced but the torque is increased, and the shaft sleeve plays a role in reducing friction and prolonging the service life;
2. according to the invention, the first movable connecting rod and the first connecting rod spring are used, so that the first movable connecting rod can slide in a reciprocating manner in the main shaft under the action of the first connecting rod pressure spring, and the position of the connecting rod of the coded lock in the main shaft mounting groove is automatically adjusted according to the length of the connecting rod of the coded lock, thereby achieving the matching use of compatibility with different coded locks.
3. The sliding support rotates a certain angle by using the electromagnet and the sliding support and controlling the power-on state of the electromagnet, when the sliding support is locked, the electromagnet is powered on to drive the motor gear to be meshed with the first driven gear, when the sliding support is unlocked, the electromagnet is not powered on, the motor gear is separated from the first driven gear, the inertia of the driving motor is avoided, the password is conveniently aligned when the sliding support is unlocked, and the torque force for unlocking is reduced.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an exploded view of a vault passlock scrambler of the present invention;
FIG. 2 is a rear view of FIG. 1;
FIG. 3 is an enlarged view of area A of FIG. 1;
FIG. 4 is a connection diagram of the upper surface of the gear rack plate of the cashbox combination lock code scrambler of the present invention;
FIG. 5 is a connection diagram of the lower surface of the gear rack plate of the cashbox combination lock scrambler of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-an upper cover, 2-a base, 3-a first movable connecting rod, 4-a coded lock thumb wheel, 5-a coded lock connecting rod, 6-a coded rotary disk, 7-a coded lock body, 8-a coded lock tongue, 9-a fixed screw, 10-a driving motor, 11-a main shaft, 12-a shaft sleeve, 13-a first connecting rod pressure spring, 14-a sliding support, 15-a positioning pin, 16-a sliding pin, 17-an electromagnet, 18-a second connecting rod pressure spring, 19-a second movable connecting rod, 20-a gear support plate, 21-a first driven gear, 22-a motor gear, 23-a second driven gear, 24-a third driven gear, 25-a fourth driven gear, 26-a third rotating shaft, 27-a second rotating shaft and 28-a first rotating shaft.
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.
In the description of the present invention, it is to be understood that the terms "upper," "middle," "outer," "inner," "around," and the positional relationships are used merely for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1-5, the invention is a cashbox combination lock random number device, comprising an upper cover 1, a base 2 and a combination lock body 7;
the upper surface of the base 2 is fixedly connected with the lower surface of the upper cover 1 through screws, a plurality of fixing screws 9 are connected between the lower surface of the base 2 and the coded lock body 7 in a threaded manner, the lower surface of the coded lock body 7 is rotatably connected with a coded lock connecting rod 5, and the lower end of the coded lock connecting rod 5 is fixedly connected with a coded rotary table 6; in the structure, when the password is required to be opened, the password turntable 6 is rotated to drive the password lock connecting rod 5 to rotate, so that the internal parts of the device are driven to move, and the lock is unlocked.
A coded lock connecting rod 5 penetrates through a coded lock body 7, one end of the coded lock connecting rod 5 is fixedly connected with a coded lock thumb wheel 4, the upper surface of the coded lock thumb wheel 4 is fixedly connected with a first movable connecting rod 3, the upper side of the first movable connecting rod 3 is provided with a main shaft 11, the main shaft 11 is installed in a base 2, the lower end surface of the main shaft 11 is provided with an installation groove, the first movable connecting rod 3 is in sliding fit with the installation groove, the upper end of the first movable connecting rod 3 is also fixedly connected with a first connecting rod pressure spring 13, and the first connecting rod pressure spring 13 is; in the structure, can drive trick lock thumb wheel 4 and rotate when trick lock connecting rod 5 rotates, then trick lock thumb wheel 4 can drive first movable connecting rod 3 and rotate, then first movable connecting rod 3 drives main shaft 11 and rotates, and first movable connecting rod 3 can be at main shaft 11 internal reciprocating slip under the effect of first connecting rod pressure spring 13 in addition, independently adjust its position in main shaft 11 mounting groove according to the length of trick lock connecting rod 5 to reach the supporting use of compatible different trick locks.
Wherein, a surface of the coded lock body 7 is connected with a coded lock tongue 8 in a sliding way; in the structure, the safe or other safety equipment can be locked by the sliding of the password lock tongue 8 in the password lock body 7.
A gear support plate 20 is further arranged between the upper cover 1 and the base 2, and the gear support plate 20 is fixedly connected with the base 2 through screws; in the above structure, the gear holder plate 20 is an important carrier for mounting the gear.
The upper surface of the gear support plate 20 is fixedly connected with a first rotating shaft 28, a second rotating shaft 27 and a third rotating shaft 26, the circumferential side surface of the first rotating shaft 28 is rotationally connected with a first driven gear 21, the circumferential side surface of the second rotating shaft 27 is rotationally connected with a second driven gear 23, the circumferential side surface of the third rotating shaft 26 is rotationally connected with a third driven gear 24, the first driven gear 21 is meshed with the second driven gear 23, the second driven gear 23 is meshed with the third driven gear 24, and the circumferential side surface of the third driven gear 24 is meshed with a fourth driven gear 25; in the above-described configuration, when the fourth driven gear 25 or the first driven gear 21 rotates due to the transmission characteristics of the gear member, the other gears also rotate, and the rotation speeds of the gears are different due to the difference in modules of the gears.
The fourth driven gear 25 is mounted on the peripheral side surface of the main shaft 11, and the fourth driven gear 25 is fixedly connected with the main shaft 11; in the above configuration, when the main shaft 11 rotates, the fourth driven gear 25 also rotates.
The lower surface of the gear support plate 20 is provided with a sliding support 14, the lower surface of the sliding support 14 is provided with a driving motor 10, the upper end of the driving motor 10 is fixedly connected with a motor gear 22, the motor gear 22 is meshed with a first driven gear 21, a positioning pin 15 and a sliding pin 16 are connected between the sliding support 14 and the gear support plate 20, and the positioning pin 15 is positioned on one side far away from the sliding pin 16; in the above structure, the driving motor 10 can drive the motor gear 22 to rotate, then the motor gear 22 can drive the first driven gear 21 to rotate, and in addition, the sliding bracket 14 can slide in a certain angle through the sliding pin 16.
The lower surface of the gear support plate 20 is also provided with an electromagnet 17, one surface of the electromagnet 17 is connected with a second movable connecting rod 19 in a sliding manner, one end of the second movable connecting rod 19 is connected with the sliding support 14 through a hinge, and the peripheral side surface of the second movable connecting rod 19 is also provided with a second connecting rod pressure spring 18; in the above structure, at ordinary times, because the electromagnet 17 is not electrified, the sliding support 14 and the second movable connecting rod 19 separate the motor gear 22 from the first driven gear 21 under the pushing of the second connecting rod pressure spring 18, so that the driving motor 10 is not allowed to rotate along with the first driven gear 21 when the code rotating disc 6 is rotated for code matching, and thus, no inertia is provided to easily match the codes.
Wherein, the peripheral side surface of the main shaft 11 is also provided with a shaft sleeve 12 for protecting the main shaft 11.
Referring to fig. 1-5, the present invention is directed to a cashbox combination lock random number device, wherein a driving motor 10 is a dc motor, a rated voltage is 12V, and the working principle is as follows:
when needs are unblanked, drive trick lock connecting rod 5 through rotating trick carousel 6 and rotate, can drive trick lock thumb wheel 4 when trick lock connecting rod 5 rotates and rotate, then trick lock thumb wheel 4 can drive first movable connecting rod 3 and rotate, then first movable connecting rod 3 drives main shaft 11 and rotates, when main shaft 11 rotates, fourth driven gear 25 also can rotate thereupon, because the transmission characteristic of gear for during fourth driven gear 25, other gears also can rotate thereupon. And at this moment, the electromagnet 17 is not electrified, the sliding support 14 and the second movable connecting rod 19 enable the motor gear 22 to be separated from the first driven gear 21 under the pushing of the second connecting rod pressure spring 18, so that the driving motor 10 is not enabled to rotate along with the first driven gear 21 when the code rotating disc 6 is rotated for code matching, the code is easily matched without inertia, and then the lock is unlocked.
When needing to lock, electro-magnet 17 circular telegram, produce magnetic field and adsorb sliding bracket 14 and rotate certain angle along sliding pin 16, then sliding bracket 14 passes through second movable connecting rod 19 and pulls driving motor 10's motor gear 22 and first driven gear 21 meshing, drive trick lock thumb wheel 4 through second driven gear 23, third driven gear 24, fourth driven gear 25, main shaft 11 and first movable connecting rod 3 and rotate, thereby realize breaking up the number of trick lock, make next use must the password again, realized password safety.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The garlands trick lock is yard ware in disorder, including upper cover (1), base (2) and trick lock body (7), its characterized in that:
the upper surface of the base (2) is fixedly connected with the lower surface of the upper cover (1) through screws, a plurality of fixing screws (9) are connected between the lower surface of the base (2) and the coded lock body (7) in a threaded manner, the lower surface of the coded lock body (7) is rotatably connected with a coded lock connecting rod (5), and the lower end of the coded lock connecting rod (5) is fixedly connected with a coded rotary table (6);
trick lock connecting rod (5) pass trick lock body (7), trick lock connecting rod (5) one end fixedly connected with trick lock thumb wheel (4), first movable connecting rod (3) of fixed surface connection on trick lock thumb wheel (4), first movable connecting rod (3) upside is provided with main shaft (11), install in base (2) main shaft (11), the mounting groove has been seted up to terminal surface under main shaft (11), first movable connecting rod (3) and mounting groove sliding fit, first movable connecting rod (3) upper end is first connecting rod pressure spring (13) of fixedly connected with still, first connecting rod pressure spring (13) are installed in the mounting groove.
2. The cashbox combination lock scrambler of claim 1, wherein a combination lock tongue (8) is slidably connected to one surface of the combination lock body (7).
3. The vault coded lock code scrambler of claim 1, wherein a gear support plate (20) is further arranged between the upper cover (1) and the base (2), and the gear support plate (20) is fixedly connected with the base (2) through screws.
4. The cashbox combination lock code scrambler according to claim 3, wherein a first rotating shaft (28), a second rotating shaft (27) and a third rotating shaft (26) are fixedly connected to the upper surface of the gear support plate (20), a first driven gear (21) is rotationally connected to the circumferential side surface of the first rotating shaft (28), a second driven gear (23) is rotationally connected to the circumferential side surface of the second rotating shaft (27), a third driven gear (24) is rotationally connected to the circumferential side surface of the third rotating shaft (26), the first driven gear (21) is meshed with the second driven gear (23), the second driven gear (23) is meshed with the third driven gear (24), and a fourth driven gear (25) is meshed with the circumferential side surface of the third driven gear (24).
5. The vault password lock scrambler of claim 4, wherein said fourth driven gear (25) is installed on the peripheral side surface of the main shaft (11), said fourth driven gear (25) is fixedly connected with the main shaft (11).
6. The vault coded lock code scrambler according to claim 4, wherein a sliding support (14) is installed on the lower surface of the gear support plate (20), a driving motor (10) is installed on the lower surface of the sliding support (14), a motor gear (22) is fixedly connected to the upper end of the driving motor (10), the motor gear (22) is meshed with a first driven gear (21), a positioning pin (15) and a sliding pin (16) are connected between the sliding support (14) and the gear support plate (20), and the positioning pin (15) is located on one side far away from the sliding pin (16).
7. The vault coded lock code scrambler according to claim 6, wherein an electromagnet (17) is further installed on the lower surface of the gear support plate (20), a second movable connecting rod (19) is connected to one surface of the electromagnet (17) in a sliding mode, one end of the second movable connecting rod (19) is connected with the sliding support (14) through a hinge, and a second connecting rod pressure spring (18) is further arranged on the peripheral side face of the second movable connecting rod (19).
8. The cashbox combination lock scrambler of claim 1, wherein a shaft sleeve (12) is further arranged on the peripheral side surface of the main shaft (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010780160.8A CN111927212A (en) | 2020-08-05 | 2020-08-05 | Cashbox coded lock code disordering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010780160.8A CN111927212A (en) | 2020-08-05 | 2020-08-05 | Cashbox coded lock code disordering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111927212A true CN111927212A (en) | 2020-11-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010780160.8A Pending CN111927212A (en) | 2020-08-05 | 2020-08-05 | Cashbox coded lock code disordering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111927212A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4799371A (en) * | 1986-05-07 | 1989-01-24 | Aardee Spring & Lock Co., Ltd. | Keyless lock |
| CN101006235A (en) * | 2004-03-26 | 2007-07-25 | 萨金特制造公司 | Mortise lock integrated trim assembly with a retracting spindle |
| CN201155239Y (en) * | 2007-12-14 | 2008-11-26 | 湖南银宝科技发展有限公司 | Mechanical cipher lock automatic code-mixing device |
| CN204457125U (en) * | 2015-01-16 | 2015-07-08 | 湖南银宝科技发展有限公司 | Coded lock and device for disordering codes of puzzle lock |
| CN204983920U (en) * | 2015-07-27 | 2016-01-20 | 广东必达保安系统有限公司 | Prevent catching hold of with a hook handle structure of lock |
| CN108301696A (en) * | 2018-04-10 | 2018-07-20 | 广州安辽安防科技有限公司 | A kind of electronic lock of anti-theft door suitable for ultra-narrow installation space |
-
2020
- 2020-08-05 CN CN202010780160.8A patent/CN111927212A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4799371A (en) * | 1986-05-07 | 1989-01-24 | Aardee Spring & Lock Co., Ltd. | Keyless lock |
| CN101006235A (en) * | 2004-03-26 | 2007-07-25 | 萨金特制造公司 | Mortise lock integrated trim assembly with a retracting spindle |
| CN201155239Y (en) * | 2007-12-14 | 2008-11-26 | 湖南银宝科技发展有限公司 | Mechanical cipher lock automatic code-mixing device |
| CN204457125U (en) * | 2015-01-16 | 2015-07-08 | 湖南银宝科技发展有限公司 | Coded lock and device for disordering codes of puzzle lock |
| CN204983920U (en) * | 2015-07-27 | 2016-01-20 | 广东必达保安系统有限公司 | Prevent catching hold of with a hook handle structure of lock |
| CN108301696A (en) * | 2018-04-10 | 2018-07-20 | 广州安辽安防科技有限公司 | A kind of electronic lock of anti-theft door suitable for ultra-narrow installation space |
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Application publication date: 20201113 |