CN112201533A - Automatic power-off device for notebook computer power line - Google Patents
Automatic power-off device for notebook computer power line Download PDFInfo
- Publication number
- CN112201533A CN112201533A CN202011105351.0A CN202011105351A CN112201533A CN 112201533 A CN112201533 A CN 112201533A CN 202011105351 A CN202011105351 A CN 202011105351A CN 112201533 A CN112201533 A CN 112201533A
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- Prior art keywords
- power
- rod
- power cord
- spring
- cavity
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/34—Means for transmitting heat thereto, e.g. capsule remote from contact member
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/002—Thermally-actuated switches combined with protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/36—Thermally-sensitive members actuated due to expansion or contraction of a fluid with or without vaporisation
- H01H37/44—Thermally-sensitive members actuated due to expansion or contraction of a fluid with or without vaporisation with piston and cylinder
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Power Sources (AREA)
Abstract
The invention discloses an automatic power-off device for a power line of a notebook computer, which comprises a shell and a power adapter, wherein a vertical partition plate is arranged in the shell, the vertical partition plate divides the interior of the shell into a power-off cavity and a placing cavity which are arranged on the left and right, the power adapter is arranged in the placing cavity, a transverse partition plate is arranged in the power-off cavity, the transverse partition plate divides the power-off cavity into an upper power-off cavity and a lower power-off cavity which are arranged up and down, two ends of the power adapter are respectively connected with a third power line and a fourth power line, a second power line is arranged on the transverse partition plate in a penetrating manner, a first power line extending into the lower power-off cavity is arranged on one side of the shell, and a lower power-off mechanism connected between the first power line and. According to the invention, two power-off protection modes are designed, so that the power-off protection of the notebook computer can be automatically realized, and the damage of notebook computer parts and economic unnecessary economic loss are avoided.
Description
Technical Field
The invention relates to the technical field of notebook computers, in particular to an automatic power-off device for a notebook power line.
Background
The power line is a line for transmitting current, and the current transmission mode is generally point-to-point transmission, and the power line can be divided into an AC power line and a DC power line according to the purpose, and generally the AC power line is a wire through which AC with higher voltage passes.
In the notebook, need utilize power cord transmission current, for the notebook provides the energy, however when the self high temperature of notebook, if continue to work, thereby the notebook continues to generate heat and can cause the damage to inside part to cause unnecessary economic loss, and also in time cut off the power supply and protect when current is too big in the power cord, consequently, need design an automatic power-off device for notebook power cord now.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an automatic power-off device for a notebook power line.
In order to achieve the purpose, the invention adopts the following technical scheme:
an automatic power-off device for a notebook computer power line comprises a shell and a power adapter, wherein a vertical partition plate is arranged inside the shell, the vertical partition plate divides the interior of the shell into a power-off cavity and a placing cavity which are arranged on the left and the right, the power adapter is arranged in the placing cavity, a transverse clapboard is arranged in the power-off cavity and divides the power-off cavity into an upper power-off cavity and a lower power-off cavity which are arranged up and down, the two ends of the power adapter are respectively connected with a third power cord and a fourth power cord, a second power cord is arranged on the diaphragm plate in a penetrating way, a first power line extending into the power-down cavity is arranged on one side of the shell, a power-down mechanism connected between the first power line and the second power line is arranged in the power-down cavity, go up the outage intracavity and be equipped with the last outage mechanism of connection between second power cord, third power cord, it is equipped with the stop gear that outage mechanism replied on the spacing to go up outage chamber top.
Preferably, the lower power-off mechanism comprises two mounting columns fixedly connected to the inner bottom wall of the lower power-off cavity, a first movable rod and a second movable rod which are connected with the mounting columns in a sliding manner are transversely arranged on the two mounting columns in a penetrating manner, a connecting rod is fixedly connected between the first movable rod and the second movable rod, one end of each of the two second movable rods, which is close to each other, is fixedly connected with a first contact piece, the two first contact pieces are respectively connected with a first power line and a second power line, one end of each of the two first movable rods, which is close to each other, is connected with an electromagnet, the two electromagnets are connected with a wire, the lead extends out of the shell and is connected with a temperature sensor, a sleeve sheet is fixedly sleeved on the first movable rod, the first movable rod is sleeved with a tension spring, one end of the tension spring is connected to the sleeve, and the other end of the tension spring is connected to the mounting column.
Preferably, the upper power-off mechanism comprises an installation barrel which is fixedly connected to the vertical partition plate and transversely arranged, a thermal resistor is arranged at the bottom in the installation barrel, the thermal resistor is connected in series in the middle of a third power line, a sliding plug is arranged in the installation barrel, thermal expansion liquid is filled between the sliding plug and the thermal resistor, a sleeve is fixedly connected to one side, away from the thermal expansion liquid, of the sliding plug, a supporting rod is connected in the sleeve in a sliding mode, a first spring is connected between the inner bottom wall of the sleeve and the supporting rod, one end, away from the first spring, of the supporting rod extends out of the sleeve, the bottom of one side, extending out of the sleeve, of the supporting rod and one end, located inside the upper power-off cavity, of the second power line are connected with a second.
Preferably, stop gear is including running through the ejector pin that sets up at last outage chamber top, ejector pin and casing sliding connection, the lower extreme of ejector pin is located outage intracavity and fixedly connected with spacing piece, the cover is equipped with the second spring on the ejector pin, the one end of second spring is connected on the ejector pin, the other end and the casing of second spring offset, the telescopic one end of pole extension that supports is the inclined plane structure, and the upside sets up the spacing groove that corresponds with the spacing piece.
Preferably, the first spring force is substantially greater than the second spring force.
Preferably, the top of the ejector rod is expanded, and the top of the shell is provided with a groove corresponding to the top of the ejector rod.
Preferably, one end of the abutting rod extending out of the sleeve is an arc surface.
Preferably, the distance between the two first contact pieces is equal to the distance between the two electromagnets.
Preferably, the ejector rod and the limiting sheet are integrally formed.
The invention has the beneficial effects that:
through setting up outage mechanism down, with inside temperature sensor installation and notebook computer, when the inside high temperature of notebook computer, the power supply of temperature sensor disconnection electro-magnet, two electro-magnets lose magnetic force and can not inhale mutually this moment, under the pulling force effect of extension spring, two first movable rods keep away from the removal each other, and then drive two second movable rods and keep away from the removal each other, can drive two first contact separation, can break off the electricity of first power cord and second power cord and be connected, realize the automatic disconnection of circuit, this is when the inside high temperature of notebook computer, and the automatic trigger power supply disconnection connects, and then effectively protect the notebook.
By arranging the upper power-off mechanism, when the current flowing in the third power line is too large, the thermal resistor can rapidly generate heat, so that the thermal expansion liquid can rapidly absorb heat and expand, the sliding plug is pushed to move, the sleeve and the abutting rod are driven to move, one of the second contact pieces is driven to move, the two second contact pieces are separated, the second power line is disconnected from the third power line power supply, the abutting rod abuts against the limiting piece to enable the ejector rod to move upwards, when the limiting piece is superposed with the limiting groove, the elastic force of the second spring downwards acts on the ejector rod to enable the limiting piece to be inserted into the limiting groove, the abutting rod is limited and fixed, the two second contact pieces can be kept in a separated state, the second power line is disconnected from the third power line power supply, and then under the condition of safety confirmed by a person, the end of the ejector rod can be upwards pulled up to enable the limiting piece to move out of the limiting groove and not to, and the thermal expansion liquid is cooled and contracted, the sliding plug moves and resets to drive the abutting rod to move and reset, so that the two second contact pieces are contacted again, and the second power line is connected with the power supply of the third power line.
According to the invention, two power-off protection modes are designed, so that the power-off protection of the notebook computer can be automatically realized, and the damage of notebook computer parts and economic unnecessary economic loss are avoided.
Drawings
FIG. 1 is a schematic structural diagram of an auto-power-off device for a power cord of a notebook computer according to the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
fig. 3 is an enlarged view of fig. 1 at B.
In the figure: 1 casing, 2 power adapters, 3 vertical separators, 4 lower power off cavities, 5 transverse separators, 6 upper power off cavities, 7 temperature sensor, 8 wires, 9 first power lines, 10 erection columns, 11 first movable rods, 12 extension springs, 13 sleeve sheets, 14 electromagnets, 15 second movable rods, 16 connecting rods, 17 first contact sheets, 18 second contact sheets, 19 second power lines, 20 third power lines, 21 erection cylinders, 22 thermal expansion liquid, 23 thermal resistors, 24 sliding plugs, 25 sleeves, 26 first springs, 27 abutting rods, 28 limiting grooves, 29 limiting sheets, 30 ejector rods, 31 second springs and 32 fourth power lines.
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.
Referring to fig. 1-3, an automatic power-off device for notebook computer power lines comprises a casing 1 and a power adapter 2, wherein a vertical partition plate 3 is arranged inside the casing 1, the vertical partition plate 3 divides the inside of the casing 1 into a power-off cavity and a placing cavity which are arranged in the left and right, the power adapter 2 is arranged in the placing cavity, a transverse partition plate 5 is arranged in the power-off cavity, the power-off cavity is divided into an upper power-off cavity 6 and a lower power-off cavity 4 which are arranged in the upper and lower directions by the transverse partition plate 5, both ends of the power adapter 2 are respectively connected with a third power line 20 and a fourth power line 32, a second power line 19 is arranged on the transverse partition plate 5 in a penetrating way, a first power line 9 extending into the lower power-off cavity 4 is arranged on one side of the casing 1, a lower power-off mechanism connected between the first power line 9 and the second power line 19 is arranged in the lower power, the top of the upper power-off cavity 6 is provided with a limiting mechanism for limiting the return of the upper power-off mechanism.
In the invention, the lower power-off mechanism comprises two mounting columns 10 fixedly connected on the inner bottom wall of a lower power-off cavity 4, a first movable rod 11 and a second movable rod 15 which are in sliding connection with the two mounting columns 10 are transversely arranged on the two mounting columns 10 in a penetrating way, a connecting rod 16 is fixedly connected between the first movable rod 11 and the second movable rod 15, one ends, close to each other, of the two second movable rods 15 are fixedly connected with first contact pieces 17, the two first contact pieces 17 are respectively connected with a first power wire 9 and a second power wire 19, one ends, close to each other, of the two first movable rods 11 are respectively connected with electromagnets 14, the distance between the two first contact pieces 17 is equal to the distance between the two electromagnets 14, the two electromagnets 14 are connected with a lead 8, the lead 8 extends out of the shell 1 and is connected with a temperature sensor 7, a sleeve sheet 13 is fixedly sleeved on the first movable rod 11, a tension spring 12 is sleeved on the first movable rod, the other end of the tension spring 12 is connected to the mounting column 10, when the two first contact pieces 17 are separated, the first power line 9 and the second power line 19 can be disconnected, so that the circuit is automatically disconnected, when the temperature in the notebook computer is too high, the power supply connection is automatically triggered and disconnected, and the notebook computer is further effectively protected.
Specifically, the upper power-off mechanism comprises a mounting cylinder 21 which is fixedly connected to the vertical partition plate 3 and is transversely arranged, a thermal resistor 23 is arranged at the bottom in the mounting cylinder 21, the thermal resistor 23 is connected in series in the middle of a third power line 20, a sliding plug 24 is arranged in the mounting cylinder 21, a thermal expansion liquid 22 is filled between the sliding plug 24 and the thermal resistor 23, a sleeve 25 is fixedly connected to one side of the sliding plug 24, which is far away from the thermal expansion liquid 22, a resisting rod 27 is connected in the sleeve 25 in a sliding manner, a first spring 26 is connected between the inner bottom wall of the sleeve 25 and the resisting rod 27, one end, which is far away from the first spring 26, of the resisting rod 27 extends out of the sleeve 25, and a second contact piece 18 is connected to one end, which is located in the upper power-off cavity 6, of the second power line 19, of the resisting rod 27 is connected with the second contact piece 18 on the resisting rod 27, the two second contact pieces 18 are, the second power line 19 is connected with the third power line 20 to control the on-off of the power.
Specifically, stop gear is including running through the ejector pin 30 that sets up at last outage chamber 6 top, ejector pin 30 and 1 sliding connection of casing, the lower extreme of ejector pin 30 is located outage chamber 6 and spacing piece 29 of fixedly connected with, ejector pin 30 and spacing piece 29 integrated into one piece, the cover is equipped with second spring 31 on the ejector pin 30, the one end of second spring 31 is connected on ejector pin 30, the other end and the casing 1 of second spring 31 offset, the one end that the pole 27 extends sleeve 25 is the inclined plane structure, the pole 27 extends sleeve 25 one end and is the cambered surface, and the spacing groove 28 that corresponds with spacing piece 29 is seted up to the upside.
Specifically, the elastic force of the first spring 26 is much larger than the elastic force of the second spring 31, so that the top rod 30 can be pushed upwards when the prop rod 27 moves, and the movement of the prop rod 27 is not hindered.
Specifically, the top of the ejector rod 30 is expanded, the top of the shell 1 is provided with a groove corresponding to the top of the ejector rod 30, and the top expansion is convenient for the operator to operate when the ejector rod 30 is lifted upwards.
When the temperature sensor is used, the temperature sensor 7 is installed inside a notebook computer, the first power line 9 and the fourth power line 32 are respectively connected with a charging port and a wiring plug to realize power supply and charging, when the temperature inside the notebook computer is too high, the temperature sensor 7 cuts off the power supply of the electromagnet 14, the two electromagnets 14 lose magnetic force and cannot attract each other, under the action of the tensile force of the tension spring 12, the two first movable rods 11 move away from each other to drive the two second movable rods 15 to move away from each other, namely the two first contact pieces 17 are driven to be separated, the electric connection between the first power line 9 and the second power line 19 can be cut off, the circuit is automatically cut off, and when the temperature inside the notebook computer is too high, the power supply connection is automatically triggered and cut off, so that the notebook computer is effectively protected.
Further, when the current flowing through the inside of the third power line 20 is too large, the thermal resistor 23 will rapidly heat, so that the thermal expansion liquid 22 rapidly absorbs heat and expands, and pushes the sliding plug 24 to move, driving the sleeve 25 and the abutting rod 27 to move, and further driving one of the second contact pieces 18 to move, so that the two second contact pieces 18 are separated, the power supply of the second power line 19 and the third power line 20 is disconnected, and the abutting rod 27 abuts against the limiting piece 29 to move the push rod 30 upwards, and when the limiting piece 29 is overlapped with the limiting groove 28, the elastic force of the second spring 31 acts downwards on the push rod 30, so that the limiting piece 29 is inserted into the limiting groove 28, and the abutting rod 27 is limited and fixed, so that the two second contact pieces 18 can be kept in a separated state, the power supply of the second power line 19 and the third power line 20 is disconnected, and then, under the condition of safety confirmed by a person, one end of the push rod 30 can be, the limiting sheet 29 moves out of the limiting groove 28, the abutting rod 27 is not fixed any more, the thermal expansion liquid 22 cools and contracts, the sliding plug 24 moves and resets, the abutting rod 27 is driven to move and reset, the two second contact pieces 18 are contacted again, and the second power line 19 is connected with the third power line 20.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (9)
1. The utility model provides an auto-power-off device for notebook power cord, includes casing (1), power adapter (2), its characterized in that, the inside of casing (1) is equipped with perpendicular baffle (3), erect baffle (3) become the internal partitioning of casing (1) about the outage chamber that sets up, place the chamber, power adapter (2) set up and are placing the intracavity, the outage intracavity is equipped with cross slab (5), last outage chamber (6) that cross slab (5) will cut off the power off the chamber and separate into and set up from top to bottom, lower outage chamber (4), the both ends of power adapter (2) are connected with third power cord (20), fourth power cord (32) respectively, wear to be equipped with second power cord (19) on cross slab (5), casing (1) one side is equipped with first power cord (9) that extend to in outage chamber (4) down, be equipped with in outage chamber (4) down and connect first power cord (9), The outage mechanism down between second power cord (19), be equipped with the last outage mechanism of connection between second power cord (19), third power cord (20) in going up outage chamber (6), it is equipped with the stop gear that spacing last outage mechanism replied to go up outage chamber (6) top.
2. The automatic power-off device for the power cord of the notebook computer is characterized in that the lower power-off mechanism comprises two mounting posts (10) fixedly connected to the inner bottom wall of the lower power-off cavity (4), a first movable rod (11) and a second movable rod (15) which are slidably connected with the two mounting posts (10) are transversely arranged on the two mounting posts (10), a connecting rod (16) is fixedly connected between the first movable rod (11) and the second movable rod (15), a first contact piece (17) is fixedly connected to one end, close to each other, of the two second movable rods (15), the two first contact pieces (17) are respectively connected with a first power cord (9) and a second power cord (19), an electromagnet (14) is connected to one end, close to each other, of the two first movable rods (11), a conducting wire (8) is connected to the two electromagnets (14), wire (8) extend casing (1) and be connected with temperature sensor (7), fixed cover has connect cover piece (13) on first movable rod (11), the cover is equipped with extension spring (12) on first movable rod (11), the one end of extension spring (12) is connected on cover piece (13), the other end of extension spring (12) is connected on erection column (10).
3. The automatic power-off device for the power cord of the notebook computer is characterized in that the upper power-off mechanism comprises a transverse installation barrel (21) fixedly connected to the vertical partition plate (3), a thermal resistor (23) is arranged at the bottom in the installation barrel (21), the thermal resistor (23) is connected in series to the middle of the third power cord (20), a sliding plug (24) is arranged in the installation barrel (21), a thermal expansion liquid (22) is filled between the sliding plug (24) and the thermal resistor (23), a sleeve (25) is fixedly connected to one side, away from the thermal expansion liquid (22), of the sliding plug (24), a supporting rod (27) is connected in the sleeve (25) in a sliding manner, a first spring (26) is connected between the inner bottom wall of the sleeve (25) and the supporting rod (27), and a sleeve (25) extends out of one end, away from the first spring (26), of the supporting rod (27), the bottom of one side of the abutting rod (27) extending out of the sleeve (25) and one end of the second power line (19) located inside the upper power-off cavity (6) are both connected with a second contact piece (18), and the third power line (20) is connected with the second contact piece (18) on the abutting rod (27).
4. The automatic power-off device for the power cord of the notebook computer according to claim 3, wherein the limiting mechanism comprises a top rod (30) penetrating through the top of the upper power-off cavity (6), the top rod (30) is connected with the housing (1) in a sliding manner, the lower end of the top rod (30) is located in the upper power-off cavity (6) and is fixedly connected with a limiting piece (29), a second spring (31) is sleeved on the top rod (30), one end of the second spring (31) is connected to the top rod (30), the other end of the second spring (31) abuts against the housing (1), one end of the abutting rod (27) extending out of the sleeve (25) is of an inclined plane structure, and the upper side of the abutting rod is provided with a limiting groove (28) corresponding to the limiting piece (29).
5. The auto-power-off device for a notebook power cord as claimed in claim 3, wherein the first spring (26) has a spring force much greater than that of the second spring (31).
6. The automatic power-off device for the power cord of the notebook computer as claimed in claim 4, wherein the top of the top bar (30) is enlarged, and the top of the shell (1) is provided with a groove corresponding to the top of the top bar (30).
7. The automatic power-off device for the notebook power cord as claimed in claim 4, wherein the end of the resisting rod (27) extending out of the sleeve (25) is a cambered surface.
8. The automatic power-off device for the notebook power cord as claimed in claim 2, wherein the distance between the two first contact pieces (17) is equal to the distance between the two electromagnets (14).
9. The automatic power-off device for the notebook power cord as claimed in claim 4, wherein the push rod (30) is integrally formed with the stopper piece (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011105351.0A CN112201533A (en) | 2020-10-15 | 2020-10-15 | Automatic power-off device for notebook computer power line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011105351.0A CN112201533A (en) | 2020-10-15 | 2020-10-15 | Automatic power-off device for notebook computer power line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112201533A true CN112201533A (en) | 2021-01-08 |
Family
ID=74009772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011105351.0A Pending CN112201533A (en) | 2020-10-15 | 2020-10-15 | Automatic power-off device for notebook computer power line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112201533A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112888248A (en) * | 2021-01-11 | 2021-06-01 | 李相杰 | Network machine room high-temperature early warning power-off device |
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| JP2007335340A (en) * | 2006-06-19 | 2007-12-27 | Matsushita Electric Ind Co Ltd | Thermostat |
| CN101471201A (en) * | 2007-12-28 | 2009-07-01 | 宗翠红 | Heat-sensitive electric switch |
| WO2017086491A1 (en) * | 2015-11-16 | 2017-05-26 | 동양전자(주) | Thermosensitive pellet type thermal fuse |
| CN206532739U (en) * | 2017-03-15 | 2017-09-29 | 东华理工大学 | A kind of mechanical high temperature power-off electronic information alarm |
| CN206650251U (en) * | 2017-03-22 | 2017-11-17 | 东莞市美盟电子有限公司 | Assembly type power-line plug |
| CN108807073A (en) * | 2018-07-20 | 2018-11-13 | 深圳市源尤电源技术有限公司 | A kind of auto-power-off device for laptop line |
| CN209626141U (en) * | 2019-01-30 | 2019-11-12 | 内蒙古振友科技有限公司 | Meet fiery auto-power-off device |
-
2020
- 2020-10-15 CN CN202011105351.0A patent/CN112201533A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007335340A (en) * | 2006-06-19 | 2007-12-27 | Matsushita Electric Ind Co Ltd | Thermostat |
| CN101471201A (en) * | 2007-12-28 | 2009-07-01 | 宗翠红 | Heat-sensitive electric switch |
| WO2017086491A1 (en) * | 2015-11-16 | 2017-05-26 | 동양전자(주) | Thermosensitive pellet type thermal fuse |
| CN206532739U (en) * | 2017-03-15 | 2017-09-29 | 东华理工大学 | A kind of mechanical high temperature power-off electronic information alarm |
| CN206650251U (en) * | 2017-03-22 | 2017-11-17 | 东莞市美盟电子有限公司 | Assembly type power-line plug |
| CN108807073A (en) * | 2018-07-20 | 2018-11-13 | 深圳市源尤电源技术有限公司 | A kind of auto-power-off device for laptop line |
| CN209626141U (en) * | 2019-01-30 | 2019-11-12 | 内蒙古振友科技有限公司 | Meet fiery auto-power-off device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112888248A (en) * | 2021-01-11 | 2021-06-01 | 李相杰 | Network machine room high-temperature early warning power-off device |
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Application publication date: 20210108 |
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