CN115859397B - Security structure of electronic equipment and electronic equipment - Google Patents
Security structure of electronic equipment and electronic equipment Download PDFInfo
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- CN115859397B CN115859397B CN202310185082.0A CN202310185082A CN115859397B CN 115859397 B CN115859397 B CN 115859397B CN 202310185082 A CN202310185082 A CN 202310185082A CN 115859397 B CN115859397 B CN 115859397B
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- 238000001514 detection method Methods 0.000 claims abstract description 38
- 238000005516 engineering process Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 3
- 239000004020 conductor Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000001154 acute effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- 238000007650 screen-printing Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The present disclosure provides a security structure of electronic equipment and electronic equipment, electronic equipment includes first casing and second casing, and security structure includes: the detection circuit is arranged in a cavity formed by buckling the first shell and the second shell and comprises an elastic switch; the locking piece is arranged on the first shell; the first shell is buckled with the second shell, the locking piece acts on the elastic switch to disconnect the elastic switch, and the detection circuit sends out a first signal; under the state that the first shell is separated from the second shell, the locking piece releases the action on the elastic switch, the elastic switch is conducted, and the detection circuit sends out a second signal. The safety structure has the characteristics of high safety and low false triggering rate.
Description
Technical Field
The disclosure relates to the field of electronic devices, and in particular relates to a security structure of an electronic device and the electronic device.
Background
An intruder may open the housing of the electronic device and tamper with the interior of the electronic device. The tamper-proof switch is arranged in the electronic equipment and can be used for monitoring the disassembly and assembly actions of the electronic equipment, so that whether the disassembly and assembly actions exist in the shell of the electronic equipment or not can be found in time. The shell of the electronic equipment presses the tamper switch to keep the tamper switch on, and once the shell is opened, the pressure acting on the tamper switch disappears, the tamper switch is disconnected, and the abnormality of the electric signal is recorded, so that the shell of the electronic equipment is found to be disassembled.
However, due to the instant impact caused by vibration, falling and the like, the tamper switch may be disconnected, and incorrect judgment may be caused by incorrect triggering signals.
Disclosure of Invention
The disclosure provides a security structure of an electronic device and the electronic device, so as to at least solve the above technical problems in the prior art.
According to a first aspect of the present disclosure, there is provided a security structure of an electronic device including a first housing and a second housing, the security structure including:
the detection circuit is arranged in a cavity formed by buckling the first shell and the second shell and comprises an elastic switch;
the locking piece is arranged on the first shell; wherein the method comprises the steps of
The first shell is buckled with the second shell, the locking piece acts on the elastic switch to disconnect the elastic switch, and the detection circuit sends out a first signal;
under the state that the first shell is separated from the second shell, the locking piece releases the action on the elastic switch, the elastic switch is conducted, and the detection circuit sends out a second signal.
In an embodiment, the elastic switch includes:
two electronic contacts;
the two conductive elastic pieces are respectively arranged on the two electronic contacts, the first shell is buckled on the second shell, the locking piece is positioned between the two conductive elastic pieces, so that the elastic switch is disconnected, the locking piece withdraws from between the two conductive elastic pieces in a state that the first shell is separated from the second shell, and the two conductive elastic pieces are contacted under the action of elasticity, so that the elastic switch is conducted.
In an embodiment, the two conductive elastic pieces are respectively bent to form arc convex parts, the arc convex parts on the two conductive elastic pieces are oppositely arranged, the locking piece withdraws from between the two conductive elastic pieces, and the cambered surfaces of the arc convex parts of the two conductive elastic pieces are contacted.
In one embodiment, the conductive spring includes:
the base is used for being connected with the electronic contact;
one end of the cantilever is connected with the base, and the other end of the cantilever is bent to form the arc-shaped convex part.
In an embodiment, a fixing hole is formed in the base of at least one of the two conductive elastic sheets.
In an embodiment, the width of the cantilever is smaller than that of the base, so that the base is provided with an extension part protruding out of the side edge of the cantilever at least at one side, and the fixing hole is arranged on the extension part.
In one embodiment, the base and the arcuate projection are on the same side or different sides of the cantilever.
In an embodiment, the bases of the two conductive spring plates are disposed opposite to each other.
In one embodiment, one of the two conductive spring plates is connected with the electronic contact through a surface mounting technology, and the other conductive spring plate is connected with the electronic contact through a screw.
According to a second aspect of the present disclosure, there is provided an electronic device comprising a first housing and a second housing, further comprising the security structure of the present disclosure.
In the safety structure disclosed by the disclosure, a detection circuit is arranged in a cavity formed by buckling a first shell and a second shell, the detection circuit comprises an elastic switch, a locking block is arranged on the first shell, when the first shell is buckled on the second shell, the elastic switch is disconnected under the action of the locking block, and the detection circuit sends out a first signal; when the first shell is separated from the second shell, the locking piece releases the action on the elastic switch, the elastic switch is conducted, and the detection circuit sends out a second signal. Under normal conditions, the elastic switch on the detection circuit is kept in an off state, and under the condition of instant impact, the locking block can still keep the elastic switch to be turned off, so that signal change can not be caused, and error judgment caused by false triggering can be avoided.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the disclosure, nor is it intended to be used to limit the scope of the disclosure. Other features of the present disclosure will become apparent from the following specification.
Drawings
The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings, in which:
in the drawings, the same or corresponding reference numerals indicate the same or corresponding parts.
FIG. 1 is a schematic diagram of a security architecture of an embodiment of the present disclosure applied to an electronic device;
fig. 2 shows a second structural schematic diagram of the application of the security structure of the embodiment of the present disclosure to an electronic device;
FIG. 3 is a schematic diagram of a conductive dome of a security structure according to an embodiment of the disclosure;
fig. 4 shows a second structural schematic diagram of a conductive dome of a security structure according to an embodiment of the disclosure;
FIG. 5 illustrates a third schematic structural view of a conductive dome of a security feature according to an embodiment of the present disclosure;
FIG. 6 illustrates a third schematic diagram of a security architecture of an embodiment of the present disclosure applied to an electronic device;
fig. 7 shows a fourth structural diagram of the security structure according to the embodiment of the present disclosure applied to an electronic device.
The reference numerals in the figures illustrate: 1-a first housing; 2-a second housing; 3-a detection circuit; 4-locking blocks; 5-electronic contacts; 6-a conductive spring piece; 61-arc-shaped protrusions; 62-a base; 63-cantilever; 64-extensions; 65-fixing holes; 7-conductors; 8-spring.
Detailed Description
In order to make the objects, features and advantages of the present disclosure more comprehensible, the technical solutions in the embodiments of the present disclosure will be clearly described in conjunction with the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, but not all embodiments. Based on the embodiments in this disclosure, all other embodiments that a person skilled in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.
Referring to fig. 1, 2, 6 and 7, the present disclosure provides a security structure of an electronic device, where the electronic device includes a first housing 1 and a second housing 2, and the security structure can monitor whether the electronic device is disassembled or not, and timely discover the behavior of tampering with the electronic device. The electronic device may be a mobile phone, a tablet computer, a notebook computer, or the like. In the following examples, a notebook computer will be described.
Referring to fig. 1 and 2, the whole structure of the embodiment of the disclosure includes a detection circuit 3 and a locking piece 4, the detection circuit 3 is disposed in a cavity formed by buckling a first housing 1 and a second housing 2, and the detection circuit 3 includes an elastic switch; the locking piece 4 is arranged on the first shell 1, referring to fig. 1, when the first shell 1 is buckled with the second shell 2, the locking piece 4 acts on the elastic switch to disconnect the elastic switch, and the detection circuit 3 sends out a first signal; referring to fig. 2, in a state in which the first housing 1 is separated from the second housing 2, the lock block 4 releases the action on the elastic switch, the elastic switch is turned on, and the detection circuit 3 sends out a second signal.
In the safety structure disclosed by the disclosure, the detection circuit 3 is arranged in a cavity formed by buckling the first shell 1 and the second shell 2, the detection circuit 3 comprises an elastic switch, when the elastic switch is disconnected, the detection circuit 3 sends a first signal, when the elastic switch is conducted, the detection circuit 3 sends a second signal, the locking piece 4 is arranged on the first shell 1, when the first shell 1 is buckled on the second shell 2, the elastic switch is disconnected under the action of the locking piece 4, when the first shell 1 is separated from the second shell 2, the locking piece 4 releases the action on the elastic switch, the elastic switch is conducted, under the normal condition, the elastic switch on the detection circuit 3 keeps the disconnected state under the action of the locking piece 4, and compared with the conditions of design tolerance, shell deformation, instant impact and the like, the elastic switch is easier to keep disconnected.
Taking a notebook computer as an example, the first casing 1 and the second casing 2 of the electronic device may be bottom shells and rims that form a host casing of the notebook computer. The locking piece 4 is arranged on the bottom shell, when the bottom shell is buckled on the frame, the locking piece 4 can act on the elastic switch to enable the switch to be kept off, and when the bottom shell is opened, the action of the locking piece 4 on the elastic switch is relieved, and the elastic switch is conducted under the action of elasticity.
The electronic device includes a motherboard, and the detection circuit 3 may be disposed on the motherboard. In an implementation, the detection circuit 3 may be directly formed on the motherboard by screen printing, imprinting, photosensing, and the like, and the elastic switch is connected to the detection circuit 3. Alternatively, the detecting circuit 3 may be an independent circuit board, and the detecting circuit 3 may be connected to the motherboard through a reserved interface on the motherboard.
In an embodiment of the disclosure, the first signal may be a low level signal and the second signal may be a high level signal. When the first casing 1 is separated from the second casing 2, the detection circuit 3 sends out a high-level signal, and according to the high-level signal, the electronic equipment can be determined to have dismounting behavior. The high signal from the detection circuit 3 can be recorded and stored as an event, including time. Based on the stored events, the time when the electronic device was disassembled can be obtained.
In an embodiment, referring to fig. 1 and 2, the elastic switch includes two electronic contacts 5 and an elastic component, and the elastic component communicates the electronic contacts 5 under the action of elastic force, so that the elastic switch is turned on. The locking piece 4 acts on the elastic component to enable the two electronic contacts 5 to be non-conductive and the elastic switch to be disconnected.
In the embodiment of the disclosure, the locking piece 4 is inserted into the elastic switch to disconnect the elastic switch. When the first shell 1 is buckled with the second shell 2, the locking piece 4 is inserted into the elastic switch, so that the situation that a thin card is inserted into a gap between the first shell 1 and the second shell 2 to avoid disassembly detection can be avoided, and the safety performance is improved.
When the locking piece 4 is inserted into the elastic switch, the locking piece 4 acts on the elastic component, so that the two electronic contacts 5 are not conducted.
In an embodiment, referring to fig. 1 and 2, the elastic component includes two conductive elastic pieces 6, the two conductive elastic pieces 6 are respectively disposed on the two electronic contacts 5, the first housing 1 is buckled on the second housing 2, the locking piece 4 is located between the two conductive elastic pieces 6, so that the elastic switch is disconnected, the locking piece 4 withdraws from between the two conductive elastic pieces 6 in a state that the first housing 1 is separated from the second housing 2, and the two conductive elastic pieces 6 are contacted under the action of elastic force, so that the elastic switch is turned on. When the two conductive spring pieces 6 are installed, a pre-pressure can be set, the pre-pressure enables the two conductive spring pieces 6 to be close to each other and keep in contact, after the locking piece 4 withdraws from between the two conductive spring pieces 6, the two conductive spring pieces 6 are in contact under the action of the pre-pressure, and the elastic switch is conducted. The direction of the lock block 4 inserted between the two conductive spring plates 6 is perpendicular to the gap between the first shell 1 and the second shell 2, so that the detection of the disassembly and assembly of the electronic equipment can be avoided by inserting a thin card into the gap between the first shell 1 and the second shell 2 and an elastic switch.
In an embodiment, referring to fig. 3 to 5, the two conductive elastic pieces 6 are respectively bent to form arc-shaped protruding portions 61, the arc-shaped protruding portions 61 on the two conductive elastic pieces 6 are oppositely arranged, the locking piece 4 withdraws from between the two conductive elastic pieces 6, and the arc surfaces of the arc-shaped protruding portions 61 of the two conductive elastic pieces 6 are contacted. The arc-shaped protruding parts 61 which are oppositely arranged form a guiding cambered surface in the inserting direction of the locking piece 4, so that the locking piece 4 can be easily inserted between the two conductive elastic pieces 6, and the assembly of the electronic equipment is facilitated.
Referring to fig. 3 and 4, the conductive spring piece 6 may be bent in one direction to form an arc-shaped protrusion 61, or may be bent in two directions to form an arc-shaped protrusion 61 as shown in fig. 5. In an exemplary embodiment, the conductive dome 6 may be bent in one direction, including being bent in a clockwise direction to form the arc-shaped convex portion 61, or being bent in a counterclockwise direction to form the arc-shaped convex portion 61. The conductive spring 6 may be bent in two directions, including a clockwise bending connection and a counterclockwise bending connection, to form an arc-shaped protrusion 61.
The conductive spring 6 may be a hook-shaped structure bent in one direction as shown in fig. 3. The outer side of the hook-shaped structure forms an arcuate projection 61. Of course, the conductive spring piece 6 may be bent in one direction to have a spiral structure.
In one embodiment, referring to fig. 3, the conductive dome 6 includes a base 62 and a cantilever 63 coupled to the base 62. The base 62 is adapted to be connected to the electronic contacts 5. One end of the cantilever 63 is connected to the base 62, and the other end is bent to form the arc-shaped convex portion 61. The other end of the cantilever 63 is a free end, and the free end may be continuously bent in one direction to form the arc-shaped protrusion 61, or may be bent in one direction and then bent in the opposite direction to form the arc-shaped protrusion 61.
The free ends of the cantilevers 63 of the two opposite conductive spring plates 6 may be bent in opposite directions to form two opposite arc-shaped protrusions 61 of the hook-shaped structure. The hook-shaped structure can better provide elasticity, so that when the first shell 1 is opened relative to the second shell 2, the two conductive elastic sheets 6 conduct the two electronic contacts 5.
In one embodiment, the base 62 and the arcuate projection 61 are on the same side or different sides of the cantilever 63. The base 62 and the arc-shaped protrusion 61 are positioned on the same side of the cantilever 63, so that space occupation can be reduced.
In one embodiment, referring to fig. 1 and 2, the bases 62 of the two conductive clips 6 are disposed opposite one another. The bases 62 of the two conductive spring plates 6 are oppositely arranged, so that the cantilevers 63 of the two conductive spring plates 6 are kept away as far as possible, and enough pre-compression and deformation space can be provided between the two conductive spring plates 6. When the base 62 and the arc-shaped convex part 61 are positioned on the same side of the cantilever 63, the arc-shaped convex parts 61 of the two conductive spring pieces 6 are also arranged oppositely.
In an alternative embodiment, the cantilever 63 may be at an angle of no more than 90 ° to the base 62, and in particular, referring to fig. 3, the cantilever 63 may be perpendicular to the base 62, or, referring to fig. 4, the cantilever 63 may be at an acute angle to the base 62. When the bases 62 of the two conductive spring plates 6 are oppositely arranged, the cantilevers 63 of the two conductive spring plates 6 and the bases 62 form an acute angle are inclined relatively, and provide enough pre-compression force together with the arc-shaped convex parts 61, so that the service life is prolonged.
In one embodiment, referring to fig. 3, a fixing hole 65 is provided on the base 62 of at least one of the two conductive clips 6. The base 62 is provided with a fixing hole 65 which can be used for screw fixing connection.
In the embodiment of the disclosure, the conductive spring 6 may be connected to the electronic contact 5 by a surface mount technology (Surface Mounted Technology, SMT), or may be connected to the electronic contact 5 by a screw, and of course, the conductive spring 6 may also be connected to the electronic contact 5 by more than one method, for example, the surface mount technology is combined with the screw to connect the conductive spring 6 to the electronic contact 5. The connection modes of the two conductive spring pieces 6 are the same or different. In the exemplary embodiment, one of the two conductive spring pieces 6 is connected with the electronic contact 5 by adopting a surface mounting technology, the efficiency of the surface mounting technology is high, the production efficiency can be improved, and the other conductive spring piece 6 is connected by adopting a screw, so that the precompression between the two conductive spring pieces 6 is easier to adjust by adopting the screw connection.
In one embodiment, referring to fig. 3, the cantilever 63 has a width smaller than that of the base 62, such that the base 62 has an extension portion 64 protruding from a side of the cantilever 63 at least at one side, and the fixing hole 65 is formed on the extension portion 64. The fixing hole 65 is formed on the extension portion 64, and can fix the conductive spring plate 6 to the electronic contact 5 by a screw from one side of the cantilever 63, so as to facilitate assembly of the conductive spring plate 6.
In one embodiment, the safety structure of the disclosed embodiment further includes a baffle plate disposed on one or both sides of the gap formed between the two conductive spring plates 6. The baffle can improve the safety performance, prevent the object from being inserted into the gap between the first shell 1 and the second shell 2 to act on the elastic switch, and avoid the detection of the dismounting behavior.
In the embodiments of the present disclosure, the configuration of the elastic switch is not limited to the above-described embodiments. For example, referring to fig. 6 and 7, the elastic switch may comprise a housing, two electronic contacts 5 being provided at the top of the housing, the elastic assembly comprising a conductor 7 and a spring 8, the spring 8 being adapted to exert a force on the conductor 7, which force keeps the conductor 7 connected to the two electronic contacts 5. When the first housing 1 is engaged with the second housing 2, the lock piece 4 acts on the conductor 7 to separate the conductor 7 from the two electronic contacts 5, thereby opening the elastic switch. When the first housing 1 is separated from the second housing 2, the conductor 7 is connected to the two electronic contacts 5 under the action of the spring 8, and the elastic switch is turned on.
The embodiment of the present disclosure provides an electronic device including a first housing 1 and a second housing 2, and the electronic device of the embodiment of the present disclosure includes the security structure of the embodiment of the present disclosure.
In the safety structure disclosed by the disclosure, the detection circuit 3 is arranged in a cavity formed by buckling the first shell 1 and the second shell 2, the detection circuit 3 comprises an elastic switch, when the elastic switch is disconnected, the detection circuit 3 sends a first signal, when the elastic switch is conducted, the detection circuit 3 sends a second signal, the locking piece 4 is arranged on the first shell 1, when the first shell 1 is buckled on the second shell 2, the elastic switch is disconnected under the action of the locking piece 4, when the first shell 1 is separated from the second shell 2, the locking piece 4 releases the action on the elastic switch, the elastic switch is conducted, under the normal condition, the elastic switch on the detection circuit 3 keeps the disconnected state under the action of the locking piece 4, and compared with the conditions of design tolerance, shell deformation, instant impact and the like, the elastic switch is easier to keep disconnected.
Taking a notebook computer as an example, the first casing 1 and the second casing 2 of the electronic device may be bottom shells and rims that form a host casing of the notebook computer. The locking piece 4 is arranged on the bottom shell, when the bottom shell is buckled on the frame, the locking piece 4 can act on the elastic switch to enable the switch to be kept off, and when the bottom shell is opened, the action of the locking piece 4 on the elastic switch is relieved, and the elastic switch is conducted under the action of elasticity.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps recited in the present disclosure may be performed in parallel or sequentially or in a different order, provided that the desired results of the technical solutions of the present disclosure are achieved, and are not limited herein.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The foregoing is merely specific embodiments of the disclosure, but the protection scope of the disclosure is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the disclosure, and it is intended to cover the scope of the disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (9)
1. A security feature of an electronic device, the electronic device comprising a first housing and a second housing, the security feature comprising:
the detection circuit is arranged in a cavity formed by buckling the first shell and the second shell and comprises an elastic switch, the elastic switch comprises two electronic contacts and two conductive elastic sheets, and the two conductive elastic sheets are respectively arranged on the two electronic contacts;
the locking piece is arranged on the first shell; wherein the method comprises the steps of
The first shell is buckled with the second shell, the locking piece is positioned between the two conductive elastic sheets so as to disconnect the elastic switch, and the detection circuit sends out a first signal;
under the state that the first shell is separated from the second shell, the locking piece withdraws from between the two conductive elastic pieces, the two conductive elastic pieces are contacted under the action of elasticity, so that the elastic switch is conducted, and the detection circuit sends out a second signal.
2. The safety structure according to claim 1, wherein the two conductive elastic pieces are respectively bent to form arc-shaped protruding portions, the arc-shaped protruding portions on the two conductive elastic pieces are arranged oppositely, the locking piece withdraws from between the two conductive elastic pieces, and the arc surfaces of the arc-shaped protruding portions of the two conductive elastic pieces are in contact.
3. The security structure of claim 2 wherein said conductive dome comprises:
the base is used for being connected with the electronic contact;
one end of the cantilever is connected with the base, and the other end of the cantilever is bent to form the arc-shaped convex part.
4. A safety structure according to claim 3, wherein the base of at least one of the two conductive clips is provided with a fixing hole.
5. The safety structure of claim 4, wherein the cantilever has a width smaller than a width of the base such that the base has an extension protruding from a side of the cantilever at least on one side, and the fixing hole is provided on the extension.
6. A safety structure according to claim 3, wherein the base and the arcuate projection are on the same side or different sides of the cantilever.
7. A security device according to claim 3, wherein the bases of the two conductive clips are disposed opposite one another.
8. The security structure of claim 1 wherein one of the two conductive clips is attached to the electronic contact by surface mount technology and the other is attached to the electronic contact by a screw.
9. An electronic device comprising a first housing and a second housing, further comprising the security structure of any of claims 1-8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310185082.0A CN115859397B (en) | 2023-02-27 | 2023-02-27 | Security structure of electronic equipment and electronic equipment |
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| CN202310185082.0A CN115859397B (en) | 2023-02-27 | 2023-02-27 | Security structure of electronic equipment and electronic equipment |
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| CN115859397A CN115859397A (en) | 2023-03-28 |
| CN115859397B true CN115859397B (en) | 2023-07-11 |
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| CN211397055U (en) * | 2019-05-08 | 2020-09-01 | 宁波均胜新能源汽车技术有限公司 | Electronic locking device and charging socket |
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| CN207705071U (en) * | 2018-01-31 | 2018-08-07 | 惠州市正牌科电有限公司 | A kind of microswitch structure of strip resistance |
| CN110907158B (en) * | 2019-12-05 | 2021-11-09 | 山东威瑞外科医用制品有限公司 | Comprehensive test system of anastomat |
| CN113172118A (en) * | 2019-12-31 | 2021-07-27 | 海尔卡奥斯物联生态科技有限公司 | Intelligent terminal for mold |
| CN114683853A (en) * | 2022-03-08 | 2022-07-01 | 宁波央腾汽车电子有限公司 | High-safety multi-loop serial high-voltage interlocking connection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211397055U (en) * | 2019-05-08 | 2020-09-01 | 宁波均胜新能源汽车技术有限公司 | Electronic locking device and charging socket |
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