CN205378474U - Electronic equipment low temperature condition starts protection device with operation down - Google Patents
Electronic equipment low temperature condition starts protection device with operation down Download PDFInfo
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- CN205378474U CN205378474U CN201620076123.8U CN201620076123U CN205378474U CN 205378474 U CN205378474 U CN 205378474U CN 201620076123 U CN201620076123 U CN 201620076123U CN 205378474 U CN205378474 U CN 205378474U
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Abstract
The utility model provides an electronic equipment low temperature condition starts protection device with operation down, wherein, electronic equipment low temperature condition starts protection device with operation down includes: heat preservation, zone of heating and connecting piece, one side of heat preservation sets up the zone of heating, the zone of heating includes: the heat reservoir and the heat energy generator that are connected, the heat preservation is connected to the connecting piece. The utility model discloses an electronic equipment low temperature condition starts protection device with operation down is on the one hand in tight cold region district, and power supply unit is difficult to be started and easy impaired and cause the equipment can not normal operating, realizes electronic equipment low temperature condition starts protection device with operation down's heating effect through the heat energy generator, can prolong power supply unit's life, and the performance is more stable. Even if on the other hand also may not realize electronic equipment low temperature condition starts protection device with operation down's heating effect with battery and circular telegram power in the open air.
Description
Technical field
This utility model relates to the protection device starting under a kind of electronic equipment cryogenic conditions and running.
Background technology
Most of electronic equipment on the market needs to start under cryogenic and run.So in extremely cold area, start under electronic equipment cryogenic conditions and the protection device of operation is just difficult with, extremely inconvenience.Electric supply installation not easily starts and easily impaired and cause equipment to be not normally functioning, and is realized the heats of the protection device starting under electronic equipment cryogenic conditions and running by heat energy generator, can extend the service life of electric supply installation, and performance is more stable.Therefore, this area starts at extremely cold regional auxiliary electronic equipment in the urgent need to a, it is not necessary to power supply is energized, it is possible to the protection device starting and running under the convenient electronic equipment cryogenic conditions used in outdoor.
Utility model content
Embodiment of the present utility model is intended to overcome disadvantages described above; provide the protection device starting under a kind of electronic equipment cryogenic conditions and running; zone of heating includes the thermal storage device and the heat energy generator that are connected, it is achieved that be heated the effect realizing starting under electronic equipment cryogenic conditions and running of insulation in the open air being energized without power supply.
For solving the problems referred to above, according to first aspect of the present utility model, it is provided that the protection device starting under a kind of electronic equipment cryogenic conditions and running, start under electronic equipment cryogenic conditions and the protection device of operation includes: heat-insulation layer, zone of heating and connector；The side of heat-insulation layer arranges zone of heating；Zone of heating includes: the thermal storage device being connected and heat energy generator；Connector connects heat-insulation layer.
According to second aspect of the present utility model, it is provided that the protection device starting under a kind of electronic equipment cryogenic conditions and running, wherein, heat-insulation layer includes: the first heat-insulation layer and the second heat-insulation layer；First cavity is set between the first heat-insulation layer and the second heat-insulation layer；Zone of heating is arranged in the first cavity；First cavity is used for placing heating object；Zone of heating is arranged at the side of heating object.
According to the third aspect of the present utility model, it is provided that the protection device starting under a kind of electronic equipment cryogenic conditions and running, wherein, zone of heating also includes: the first zone of heating and the second zone of heating；First heat-insulation layer is arranged at the upside of the second heat-insulation layer；Second zone of heating is arranged at the upside of the second heat-insulation layer；First zone of heating is arranged at the downside of the first heat-insulation layer；The second cavity it is provided with between first zone of heating and the second zone of heating；Second cavity is used for inserting heating object.
According to fourth aspect of the present utility model, it is provided that the protection device starting under a kind of electronic equipment cryogenic conditions and running, wherein, connector includes: be respectively arranged at the engaging groove on zone of heating or heat-insulation layer；Or it is respectively arranged at the bandage on zone of heating or heat-insulation layer；It is arranged at the sucker on zone of heating or heat-insulation layer or Magnet.
According to the 5th aspect of the present utility model, it is provided that the protection device starting under a kind of electronic equipment cryogenic conditions and running, wherein, heat-insulation layer is ceramic wool.
According to the 6th aspect of the present utility model, it is provided that the protection device starting under a kind of electronic equipment cryogenic conditions and running, wherein, heat energy generator is for heating the medium in thermal storage device；Heat energy generator is photothermal converter or magnetic thermoconverter.
According to the 7th aspect of the present utility model, it is provided that the protection device starting under a kind of electronic equipment cryogenic conditions and running, wherein, photothermal converter includes solar absorption panels, solar converter and resistance wire.
According to eighth aspect of the present utility model, it is provided that the protection device starting under a kind of electronic equipment cryogenic conditions and running, wherein, magnetic thermoconverter includes the coil and the conducting strip that are connected；And it is arranged at the magnetic strip in coil.
According to the 9th aspect of the present utility model, it is provided that the protection device starting under a kind of electronic equipment cryogenic conditions and running, wherein, thermal storage device includes: thermal energy exchange pipeline and choke valve；Choke valve is arranged on thermal energy exchange pipeline, for controlling the flow of thermal energy exchange fluids within pipes.
According to the tenth aspect of the present utility model; provide the protection device starting under a kind of electronic equipment cryogenic conditions and running; wherein; the protection device started under electronic equipment cryogenic conditions and run also includes: switch; it is located at the protection apparatus surface of startup and operation under electronic equipment cryogenic conditions and connects zone of heating, starting zone of heating so as to heat.
This utility model provides the protection device starting under a kind of electronic equipment cryogenic conditions and running; on the one hand in severe cold area; electric supply installation not easily starts and easily impaired and cause equipment to be not normally functioning; the heats of the protection device starting under electronic equipment cryogenic conditions and running is realized by heat energy generator; extending the service life of electric supply installation, performance is more stable；Even and if the heats of the protection device starting under electronic equipment cryogenic conditions and running can also be realized out of doors without battery and energizing source.Making the connection started between the protection device and the heating object that run under electronic equipment cryogenic conditions more firm by connector on the other hand, thus the laminating between zone of heating and heating object is more tight, the efficiency of heating surface is higher；This external thermal insulation makes heat loss reduce, and the efficiency of heating surface is high, effective.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of this utility model specific embodiment.
Description of reference numerals:
1, heat-insulation layer 2, zone of heating 3, connector
4, thermal storage device 5, heat energy generator the 6, first heat-insulation layer
7, second heat-insulation layer the 8, first cavity the 9, first zone of heating
10, second zone of heating the 11, second cavity
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with detailed description of the invention and with reference to accompanying drawing, this utility model is further described.It should be understood that these descriptions are illustrative of, and it is not intended to limit scope of the present utility model.Additionally, in the following description, eliminate the description to known features and technology, to avoid unnecessarily obscuring concept of the present utility model.
Fig. 1 is the structural representation of this utility model specific embodiment.
As shown in Figure 1; embodiment of the present utility model is for solving the problems referred to above; provide the protection device starting under a kind of electronic equipment cryogenic conditions and running, start under electronic equipment cryogenic conditions and the protection device of operation includes: heat-insulation layer 1, zone of heating 2 and connector 3；The side of heat-insulation layer 1 arranges zone of heating 2；Zone of heating 2 includes: the thermal storage device 4 being connected and heat energy generator 5；Connector 3 connects heat-insulation layer 1.
In the present embodiment, heat energy generator 5 is used for producing heat, it is possible to mixed by chemical powder, magnetic energy conversion thermal energy or luminous energy conversion thermal energy realizes；Heat energy generator 5 conducts heat to thermal storage device 4；Thermal storage device 4 can be flat type, and for carrying out quick thermal energy exchange with the equipment needing heating, heats is high, effective；Connector 3 is for being connected to heating object by the protection device started under electronic equipment cryogenic conditions and run, it is possible to realize by pasting, adsorb, engage or embedding.The gap of the protection device that can start and run under heating object and electronic equipment cryogenic conditions arranges sealing filler, reduces heat radiation, improves the effect of heating further.Sealing filler can be the plastics or metal that heat conductivity is good.
So on the one hand in severe cold area; electric supply installation not easily starts and easily impaired and cause equipment to be not normally functioning; being realized the heats of the protection device starting under electronic equipment cryogenic conditions and running by heat energy generator 5, can extend the service life of electric supply installation, performance is more stable；Even and if the heats of the protection device starting under electronic equipment cryogenic conditions and running can also be realized out of doors without battery and energizing source；Making the connection started between the protection device and the heating object that run under electronic equipment cryogenic conditions more firm by connector 3 on the other hand, thus the laminating between zone of heating 2 and heating object is more tight, the efficiency of heating surface is higher；This external thermal insulation 1 makes heat loss reduce, and the efficiency of heating surface is high, effective.
The present embodiment is it is further preferred that provide the protection device starting under a kind of electronic equipment cryogenic conditions and running, and wherein, heat-insulation layer 1 includes: the first heat-insulation layer 6 and the second heat-insulation layer 7；Between first heat-insulation layer 6 and the second heat-insulation layer 7, the first cavity 8 is set；Zone of heating 2 is arranged in the first cavity 8；First cavity 8 is used for placing heating object；Zone of heating 2 is arranged at the side of heating object.
In the present embodiment, heating object can be wrapped between the first heat-insulation layer 6 and the second heat-insulation layer 7 by the first heat-insulation layer 6 and the second heat-insulation layer 7, and so heat radiation is low, better heat preservation.And heating object is wrapped between the first heat-insulation layer 6 and the second heat-insulation layer 7; the stable connection degree starting under electronic equipment cryogenic conditions between the protection device and the heating object that run can be strengthened so that start under electronic equipment cryogenic conditions and the protection device of operation not easily slips.First heat-insulation layer 6 and the second heat-insulation layer 7 can include the polylith heat-insulation layer 1 being arranged in same level, are connected by stitching cloth between heat-insulation layer 1 with heat-insulation layer 1, so folding more convenient.First heat-insulation layer 6 and the second heat-insulation layer 7 can also include the polylith heat-insulation layer 1 that vertical direction is overlapping, so stop heat by multi-layer heat preserving layer 1, heat loss can be made to reduce further, and the efficiency of heating surface is high, effective.
So being incubated by multi-layer heat preserving layer 1, heat loss is few, and the efficiency of heating surface is high, effective.
The present embodiment is it is further preferred that provide the protection device starting under a kind of electronic equipment cryogenic conditions and running, and wherein, zone of heating 2 also includes: the first zone of heating 9 and the second zone of heating 10；First heat-insulation layer 6 is arranged at the upside of the second heat-insulation layer 7；Second zone of heating 10 is arranged at the upside of the second heat-insulation layer 7；First zone of heating 9 is arranged at the downside of the first heat-insulation layer 6；It is provided with the second cavity 11 between first zone of heating 9 and the second zone of heating 10；Second cavity 11 is used for inserting heating object.
In the present embodiment, heating object can be wrapped between the first zone of heating 9 and the second zone of heating 10 by the first zone of heating 9 and the second zone of heating 10, and such heating surface (area) (HS is big, and heats is better.And heating object is wrapped between the first zone of heating 9 and the second zone of heating 10; the stable connection degree starting under electronic equipment cryogenic conditions between the protection device and the heating object that run can be strengthened so that start under electronic equipment cryogenic conditions and the protection device of operation not easily slips.First zone of heating 9 and the second zone of heating 10 can include the multiple heaters being arranged in same level, are connected by stitching cloth between heater with heater, so folding more convenient.First zone of heating 9 and the second zone of heating 10 can also include multiple heaters that vertical direction is overlapping, so heated by Multi-layer warming device, and accumulation of heat is fast, and the efficiency of heating surface is high, effective.Heater could be arranged to set shape, annular or tubular, and area of so heating is big, and rate of warming is fast and heats uniformly.In addition the first cavity 8 and the second cavity 11 can be inserted into heating object, so can multiple heating objects be heated simultaneously, and heating surface (area) (HS is big, and the efficiency of heating surface is good.
So being heated by Multi-layer warming layer 2, accumulation of heat is fast, and the efficiency of heating surface is high, effective.
The present embodiment is further preferably; provide the protection device starting under a kind of electronic equipment cryogenic conditions and running; wherein, connector 3 includes: is respectively arranged at the engaging groove on zone of heating 2 or heat-insulation layer 1 or is respectively arranged at the bandage on zone of heating 2 or heat-insulation layer 1；Or it is arranged at the sucker on zone of heating 2 or heat-insulation layer 1 or Magnet.
In the present embodiment, engaging groove can include the machine spring being arranged at engaging inside grooves, for the support force providing heating object to skid off from engaging groove Inside To Outside.Machine spring can be multiple, is separately positioned on bottom surface and the side of engaging groove.During heating object pressure, the machine spring of side and the machine spring of bottom surface shrink simultaneously.During heating object engaging, the machine spring of side extends, and the machine spring of bottom surface shrinks and props up heating object.When not engaging, the machine spring of side shrinks, and heating object skids off from engaging groove side, is ejected engaging groove by the machine spring of bottom.The contraction of machine spring and extension can be passed through one end and connect the top of machine spring, and the slidably slide block that one end is stretched out outside the cell wall of engaging groove realizes.In the present embodiment, it is possible to multiple sucker or multiple Magnet are set.Such junction point is multi-link more firm.
The connection between the protection device and the heating object that run is started so on the one hand more firm under electronic equipment cryogenic conditions；Laminating between zone of heating 2 and heating object is more tight on the other hand, and the efficiency of heating surface is higher.
The present embodiment is it is further preferred that provide the protection device starting under a kind of electronic equipment cryogenic conditions and running, and wherein, heat-insulation layer 1 is ceramic wool.
The heat-proof combustion-resistant of the protection device starting under electronic equipment cryogenic conditions so on the one hand and running is effective, when the temperature of the protection device started under electronic equipment cryogenic conditions and run raises, it is possible to prevent thermal source contact ground from causing fire；Sound insulation and the acoustically effective of the protection device started under electronic equipment cryogenic conditions on the other hand and run are strong；Additionally, the resist chemical performance of the protection device starting under electronic equipment cryogenic conditions and running is good.
The present embodiment is it is further preferred that provide the protection device starting under a kind of electronic equipment cryogenic conditions and running, and wherein, heat energy generator 5 is for heating the medium in thermal storage device 4；Heat energy generator 5 is photothermal converter or magnetic thermoconverter.
In the present embodiment, photothermal converter is by absorbing luminous energy and converting light energy into heat energy.Magnetic thermoconverter produces eddy current by electric conductor cutting magnetic induction line and is heated.
So by photothermal converter or magnetic thermoconverter can by energy absorption and be converted to heat energy, even if the heats of the protection device starting under electronic equipment cryogenic conditions and running can also be realized out of doors without battery and energizing source.In severe cold area; electric supply installation not easily starts and easily impaired and cause equipment to be not normally functioning; being realized the heats of the protection device starting under electronic equipment cryogenic conditions and running by photothermal converter or magnetic thermoconverter, can extend the service life of electric supply installation, performance is more stable.
The present embodiment is it is further preferred that provide the protection device starting under a kind of electronic equipment cryogenic conditions and running, and wherein, photothermal converter includes solar absorption panels, solar converter and resistance wire.
In the present embodiment, the thermal energy storage of photothermal converter conversion, in thermal storage device 4, so when not carrying out energy conversion, is also provided that heat energy.Photothermal converter can also include reflection unit, and the light of light source is gathered on solar absorption panels by reflection unit, even if so when sun angle is relatively low, also can be gathered together by enough luminous energy by reflection unit, be used for producing heat；The luminous energy that solar absorption panels absorbs is converted to heat energy by solar converter；Heat energy is transmitted on heating object by resistance wire.
So by photothermal converter can by energy absorption and be converted to heat energy, even if the heats of the protection device starting under electronic equipment cryogenic conditions and running can also be realized out of doors without battery and energizing source.In severe cold area; electric supply installation not easily starts and easily impaired and cause equipment to be not normally functioning; being realized the heats of the protection device starting under electronic equipment cryogenic conditions and running by photothermal converter, can extend the service life of electric supply installation, performance is more stable.
The present embodiment is it is further preferred that provide the protection device starting under a kind of electronic equipment cryogenic conditions and running, and wherein, magnetic thermoconverter includes the coil and the conducting strip that are connected；And it is arranged at the magnetic strip in coil.
In the present embodiment, the thermal energy storage of magnetic thermoconverter conversion, in thermal storage device 4, so when not carrying out energy conversion, is also provided that heat energy.Coil is conductor, it is possible to the three-back-shaped zone of heating 2 that is arranged on is internal.Magnetic strip can be arranged on three-back-shaped thiol.Magnetic strip can be the positive and negative electrodes in same multiple magnetic strips to setting.Conducting strip connecting coil, it is possible to overlay upside or the downside of coil.In the present embodiment, it is possible to realize heating by shaking magnetic thermoconverter, for instance: can passing through to arrange handle strip moving gear and rotate, nested spin chain on gear, spin chain is arranged on upside or the downside of zone of heating 2；When spin chain moves, zone of heating 2 constantly shakes, and causes the magnetic strip in zone of heating 2 or conductor vibrations so that the continuous cutting magnetic induction line of conductor, produces eddy current, and the heat that eddy current is assembled is transferred to thermal storage device 4 by conducting strip；Can also passing through to rock heating cushion so that magnetic strip or conductor vibrations, so that the continuous cutting magnetic induction line of conductor in zone of heating 2, produce eddy current, the heat that eddy current is assembled is transferred to thermal storage device 4 by conducting strip.
So by magnetic thermoconverter can by energy absorption and be converted to heat energy, even if the heats of the protection device starting under electronic equipment cryogenic conditions and running can also be realized out of doors without battery and energizing source.In severe cold area; electric supply installation not easily starts and easily impaired and cause equipment to be not normally functioning; being realized the heats of the protection device starting under electronic equipment cryogenic conditions and running by magnetic thermoconverter, can extend the service life of electric supply installation, performance is more stable.
The present embodiment is it is further preferred that provide the protection device starting under a kind of electronic equipment cryogenic conditions and running, and wherein, thermal storage device 4 includes: thermal energy exchange pipeline and choke valve；Choke valve is arranged on thermal energy exchange pipeline, for controlling the flow of thermal energy exchange fluids within pipes.
In the present embodiment, can depositing fluid in thermal energy exchange pipeline, fluid passes through throttle valve control flow, to control the speed of heating.Booster pump or Manual pressurizing device can also be set, for keeping the flowing of fluid.
So can control the speed of the heating of the protection device starting under electronic equipment cryogenic conditions and running, thus the adjustment of the heating-up temperature of the protection device that realization is to starting under electronic equipment cryogenic conditions and run.
The present embodiment is further preferably; provide the protection device starting under a kind of electronic equipment cryogenic conditions and running; wherein; the protection device started under electronic equipment cryogenic conditions and run also includes: switch; it is located at the protection apparatus surface of startup and operation under electronic equipment cryogenic conditions and connects zone of heating 2, being used for starting zone of heating 2 so as to heat.
In the present embodiment, when the switch is closed, heating circuit cuts off, and zone of heating 2 is no longer heat up；When the switch is opened, heating circuit is connected, and zone of heating 2 is started working.
So by switching on and close the time that can control heating, convenient use.
It should be appreciated that above-mentioned being merely cited for property of detailed description of the invention of the present utility model illustrates or explains principle of the present utility model, and do not constitute restriction of the present utility model.Therefore, any amendment of making when not necessarily departing from spirit and scope of the present utility model, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.Additionally, this utility model claims be intended to fall in the equivalents on scope and border or this scope and border whole change and modifications example.
Claims (10)
1. the protection device started under an electronic equipment cryogenic conditions and run, it is characterised in that start under described electronic equipment cryogenic conditions and the protection device of operation includes:
Heat-insulation layer, zone of heating and connector；
The side of described heat-insulation layer arranges described zone of heating；
Described zone of heating includes: the thermal storage device being connected and heat energy generator, and wherein, described heat energy generator is for heating the medium in described thermal storage device；
Described connector connects described heat-insulation layer.
2. the protection device started under electronic equipment cryogenic conditions according to claim 1 and run, it is characterised in that described heat-insulation layer includes:
First heat-insulation layer and the second heat-insulation layer；Between described first heat-insulation layer and described second heat-insulation layer, the first cavity is set；Described zone of heating is arranged in described first cavity；Described first cavity is used for placing heating object；Described zone of heating is arranged at the side of described heating object.
3. the protection device started under electronic equipment cryogenic conditions according to claim 2 and run, it is characterised in that described zone of heating also includes:
First zone of heating and the second zone of heating；
Described first heat-insulation layer is arranged at the upside of described second heat-insulation layer；
Described second zone of heating is arranged at the upside of described second heat-insulation layer；
Described first zone of heating is arranged at the downside of described first heat-insulation layer；
It is provided with the second cavity between described first zone of heating and described second zone of heating；Described second cavity is used for inserting heating object.
4. according to the protection device starting and running under the arbitrary described electronic equipment cryogenic conditions of claims 1 to 3, it is characterised in that described connector includes:
It is respectively arranged at the engaging groove on described zone of heating or described heat-insulation layer；
Or it is respectively arranged at the bandage on described zone of heating or described heat-insulation layer；Or
It is arranged at the sucker on described zone of heating or described heat-insulation layer or Magnet.
5. the protection device started under electronic equipment cryogenic conditions according to claim 1 and run, it is characterised in that described heat-insulation layer is ceramic wool.
6. the protection device started under electronic equipment cryogenic conditions according to claim 1 and run, it is characterised in that described heat energy generator is photothermal converter or magnetic thermoconverter.
7. the protection device started under electronic equipment cryogenic conditions according to claim 6 and run, it is characterised in that described photothermal converter includes solar absorption panels, solar converter and resistance wire.
8. the protection device started under electronic equipment cryogenic conditions according to claim 6 and run, it is characterised in that described magnetic thermoconverter includes the coil and the conducting strip that are connected；And it is arranged at the magnetic strip in described coil.
9. the protection device started under electronic equipment cryogenic conditions according to claim 1 and run, it is characterised in that described thermal storage device includes:
Thermal energy exchange pipeline and choke valve；
Described choke valve is arranged on described thermal energy exchange pipeline, for controlling the flow of described thermal energy exchange fluids within pipes.
10. the protection device started under electronic equipment cryogenic conditions according to claim 1 and run, it is characterised in that start under described electronic equipment cryogenic conditions and the protection device of operation also includes:
Switch, is located at the protection apparatus surface of startup and operation under electronic equipment cryogenic conditions and connects described zone of heating, being used for starting described zone of heating so as to heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620076123.8U CN205378474U (en) | 2016-01-26 | 2016-01-26 | Electronic equipment low temperature condition starts protection device with operation down |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620076123.8U CN205378474U (en) | 2016-01-26 | 2016-01-26 | Electronic equipment low temperature condition starts protection device with operation down |
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| CN205378474U true CN205378474U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620076123.8U Active CN205378474U (en) | 2016-01-26 | 2016-01-26 | Electronic equipment low temperature condition starts protection device with operation down |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107426951A (en) * | 2017-07-26 | 2017-12-01 | 合肥联宝信息技术有限公司 | Heat exchange mechanisms and electronic equipment |
| CN111554187A (en) * | 2020-04-29 | 2020-08-18 | 维沃移动通信有限公司 | Foldable electronic equipment |
-
2016
- 2016-01-26 CN CN201620076123.8U patent/CN205378474U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107426951A (en) * | 2017-07-26 | 2017-12-01 | 合肥联宝信息技术有限公司 | Heat exchange mechanisms and electronic equipment |
| CN107426951B (en) * | 2017-07-26 | 2019-12-03 | 合肥联宝信息技术有限公司 | Heat exchange mechanisms and electronic equipment |
| CN111554187A (en) * | 2020-04-29 | 2020-08-18 | 维沃移动通信有限公司 | Foldable electronic equipment |
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