CN207853529U - EPS fire-fighting equipment emergency power supply safety devices - Google Patents
EPS fire-fighting equipment emergency power supply safety devices Download PDFInfo
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- CN207853529U CN207853529U CN201820144312.3U CN201820144312U CN207853529U CN 207853529 U CN207853529 U CN 207853529U CN 201820144312 U CN201820144312 U CN 201820144312U CN 207853529 U CN207853529 U CN 207853529U
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- power supply
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Abstract
The utility model discloses a kind of EPS fire-fighting equipments emergency power supply safety devices, are related to fire-fighting equipment, it is intended to solve the problem of that the emergency power supply of existing fire-fighting equipment needs that irrelevant human contact is avoided to ensure using effect, its key points of the technical solution are that：A kind of EPS fire-fighting equipments emergency power supply safety device, including emergency power supply case, the emergency power supply case offers side opening, it is hinged with chamber door in the side opening, the side opening offers card slot, the chamber door offers sliding slot in the width direction, sliding is connected with bayonet lock in the sliding slot, one end that the sliding slot is hinged side towards chamber door is provided with electromagnet, the bayonet lock has ferromagnetism, the chamber door is connected with the control device for controlling electromagnet keying, and the control device includes secret key.The EPS fire-fighting equipment emergency power supply safety devices of the utility model, can prevent irrelevant human contact's emergency power supply, and safety higher.
Description
Technical field
The utility model is related to fire-fighting equipments, more specifically, it relates to which a kind of fire-fighting equipment emergency power supply is anti-with safety
Protection unit.
Background technology
In recent years, EPS（Fire Emergency Power Supply）Fire-fighting equipment emergency power supply as it is a kind of independently of
Reliable green stand-by power supply except power grid, is widely used among various architectural engineerings, application range covers fire
Escape lighting, standby lighting, emergency lighting and fire-fighting power-equipment, importance are to ensure to provide in the case where accident occurs
Required emergency electric power provides strong safety guarantee for people's production and living safety.
Its principle of EPS power supplys is：When alternating current is normal, powered to important load by alternating current by exporting switching device,
Charger is that accumulator carries out charging or floating charge simultaneously；After alternating current powers off or voltage exceeds supply district, and controller starts inverse
Become device, while exporting switching device and mains-supplied state is immediately switched to inverter power supply, emergent confession is provided for load equipment
Electricity；When city power recovery, emergency power supply will revert to mains-supplied.
Due to the importance of emergency power supply, if incoherent personnel arbitrarily contact emergency power supply and easily lead to emergency power supply
It goes wrong, influences using effect, and cause security risk.
The above situation occurs in order to prevent, and current way is：Each component of emergency power supply is answered into urgent telegram mounted on dedicated
In the case of source.Emergency power supply case offers side opening for a user to operate, the chamber door of adaptation is hinged in side opening, chamber door is again
It is lockked by common mechanical lock.
Said program provides a kind of emergency power supply case, can prevent irrelevant human contact's emergency power supply, while this reality
This is solved the problems, such as with a kind of new scheme of novel proposition.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of EPS fire-fighting equipments to answer urgent telegram
Source safety device can prevent irrelevant human contact's emergency power supply, and safety higher.
The above-mentioned technical purpose of the utility model technical scheme is that：A kind of EPS fire-fighting equipments
Emergency power supply safety device, including emergency power supply case in hollow structure, the emergency power supply case are offered within
The side opening of chamber connection, the hinged chamber door being adapted to therewith in the side opening, the side opening is in the phase for being hinged side with chamber door
Offside offers card slot, and the side that the card slot is hinged side towards chamber door is in hatch frame, and the chamber door opens up in the width direction
It is in hatch frame to have sliding slot, one end that the sliding slot is hinged side away from chamber door, is slid in the sliding slot and is connected with bayonet lock, the cunning
Slot length is more than bayonet lock length, and it is hinged between one end and bayonet lock of side towards chamber door and is provided with spring, and the bayonet lock extends
Go out sliding slot, and be connected in card slot, one end that the sliding slot is hinged side towards chamber door is provided with electromagnet, and the bayonet lock has ferromagnetic
Property, the chamber door be connected with for control electromagnet keying control device, the control device include for open control dress
The secret key set, the secret key are placed in outside emergency power supply case.
By using above-mentioned technical proposal, each equipment of fire-fighting emergency power supply can be mounted in emergency power supply case,
And it is closed side opening using chamber door；Chamber door is fixed in the way of bayonet lock clamping card slot, that is, chamber door is lockked, to prevent irrelevant people
Member's contact emergency power supply avoids causing security risk to ensure using effect；When need open chamber door in emergency power supply case
Each equipment when carrying out the operation such as overhauling, user need to only utilize secret key to open control assembly, utilize control assembly control electricity
Magnet is opened, and attracts bayonet lock towards its movement, that is, drives bayonet lock to be detached from card slot, so that it may to open chamber door.
The utility model is further arranged to：The chamber door through-thickness offers secret key slot, and the secret key slot deviates from
Emergency power supply box cavity side offers secret key hole along its length in hatch frame, the secret key grafting secret key slot, described
Secret key hole is in hatch frame towards emergency power supply box cavity one end, and the control device includes：Range sensor is set to secret key
One end of slot opposed open, test side is towards secret key hole, for detecting the spacing between the open opposite sides of secret key hole, and it is defeated
Go out distance detection signal；Control assembly is coupled to the range sensor output end and electromagnet, receives response distance detection letter
Number, and opened and closed according to distance detection signal control electromagnet.
By using above-mentioned technical proposal, secret key is plugged in secret key slot in user, and secret key hole alignment distance passes
Behind sensor test side, range sensor can detect its spacing between the opposed open one end of secret key hole, and export distance inspection
Signal is surveyed to control assembly, so that control assembly is opened and closed according to distance detection signal control electromagnet.
The utility model is further arranged to：The control assembly controls electromagnet according to distance detection signal, works as distance
It detects signal and is equal to preset value, control assembly opens electromagnet.
By using above-mentioned technical proposal, user only needs first to set preset value in control assembly, then when distance is examined
When surveying signal equal to preset value, control assembly can open electromagnet and bayonet lock is attracted to be directed away from the movement of card slot side, make card
Pin is detached from card slot, so that user opens chamber door.
The utility model is further arranged to：The secret key and secret key slot are in the form of a column, the secret key hole be it is multiple, it is multiple
The secret key hole is arranged along secret key outer wall periphery, and length is different.
By using above-mentioned technical proposal, to open chamber door, need to rotate secret key so that correct secret key hole alignment away from
Test side from sensor, to greatly reinforce safety.
The utility model is further arranged to：Edge is provided with scale at the secret key channel opening.
It by using above-mentioned technical proposal, can be got information about convenient for users to the amount of spin to secret key, to reinforce
Using effect.
The utility model is further arranged to：The secret key is multiple, and side is provided with placing box to the chamber door outwardly, institute
It is hollow and be in top hatch frame to state placing box, the secret key hole length in multiple secret keys is different, and multiple secret keys are placed
In in placing box, multiple secret keys are respectively arranged with serial number.
By using above-mentioned technical proposal, to open the correct secret key that chamber door first has to choosing pair, so as into one
The safety of step enhancing secret key；The setting of serial number helps to recognize each secret key.
The utility model is further arranged to：The secret key slot is provided with travel switch, the stroke far from open at one end
Switch movable contact point extends into secret key slot, and towards secret key channel opening side, and the travel switch is series at range sensor, institute
It states range sensor and is coupled to travel switch normally opened contact.
By using above-mentioned technical proposal, the circuit of range sensor is being usually off state, only when secret key grafting
When secret key slot touches travel switch movable contact, range sensor can just start to work, so as to energy saving.
The utility model is further arranged to：Hidden camera shooting is coupled between the travel switch and range sensor
Head, the hidden camera are parallel to range sensor, and are set in the room for placing emergency power supply case, the hidden
Camera images end towards emergency power supply case.
By using above-mentioned technical proposal, hidden camera shooting can also be connected while stroke switch conduction range sensor
Head, at this time hidden camera can acquire the video information near emergency power supply case, when something goes wrong, to facilitate correlation
Personnel are quickly found out counterpart personnel.
In conclusion the utility model has the advantages that：
1, emergency power supply case is set, emergency power supply case opens up side opening, and side opening is hinged chamber door；In chamber door on side opening
The opposite side of hinged side opens up card slot, chamber door sliding connection bayonet lock, and bayonet lock is clamped card slot, so as to by fire-fighting emergency power supply
Each component be mounted in emergency power supply case, and be closed chamber door and lock chamber door in the way of bayonet lock clamping card slot, and then can be with
Irrelevant human contact's emergency power supply is prevented, ensures emergency power supply using effect；
2, electromagnet is arranged away from card slot side in bayonet lock, and bayonet lock has ferromagnetism；Electromagnet, which is connected with, controls what it was opened and closed
Control device, control device include the secret key for control device for opening, and secret key is located at outside emergency power supply case, can thereby using person
To utilize secret key control device for opening, bayonet lock is attracted to be directed away from one sidesway of card slot to be opened using control device control electromagnetism patch
It is dynamic, and then user can open chamber door.
3, chamber door opens up secret key slot, travel switch is arranged in secret key slot, travel switch connects hidden camera, hidden
Formula camera images end towards emergency power supply case；When secret key is plugged to secret key slot, triggering travel switch opens hidden camera,
So as to acquire the information for the personnel for opening chamber door using hidden camera, when something goes wrong, to be quickly found out correspondence
Personnel.
Description of the drawings
Fig. 1 is the structural schematic diagram one of the utility model, to show overall structure；
Fig. 2 is the structural schematic diagram two of the utility model, mainly showing the structure of side opening and card slot；
Fig. 3 is the partial cutaway figure one of chamber door, mainly showing the internal structure of sliding slot；
Fig. 4 is the partial cutaway figure of chamber door, mainly showing the structure in secret key slot；
Fig. 5 is the system block diagram of the utility model, mainly showing the structure of control device；
Fig. 6 is the structural schematic diagram of secret key, mainly showing the structure in secret key hole.
In figure：1, emergency power supply case；2, side opening；21, card slot；3, chamber door；31, sliding slot；32, secret key slot；321, strip
Slot；33, placing box；4, bayonet lock；41, spring；42, electromagnet；5, secret key；51, secret key hole；52, strip；61, range sensor；
62, control assembly；7, travel switch；8, hidden camera.
Specific implementation mode
With reference to the accompanying drawings and examples, the utility model is described in detail.
EPS fire-fighting equipment emergency power supply safety devices referring to Figures 1 and 2, including in hollow structure answer urgent telegram
Source case 1, emergency power supply case 1 are used to place the relevant device of EPS emergency power supplies.It is offered in 1 front side of emergency power supply case and is connected to it
The side opening 2 of inner cavity, so that relevant staff operates the various kinds of equipment of EPS emergency power supplies.Pass through in side opening 2
Corresponding articulated shaft is hinged with the chamber door 3 being adapted to therewith, to be closed side opening 2, ensures the equipment safety in emergency power supply case 1
Property.
Chamber door 3 and the hinged side of side opening 2 are known as being hinged side, and the other side is known as active side.
With reference to Fig. 2 and Fig. 3, offer card slot 21 on side opening 2, card slot 21 be located at side opening 2 and chamber door 3 it is hinged one
The opposite side of side；The side that card slot 21 is hinged side towards chamber door 3 is in hatch frame.
In 3 upper edge of chamber door, its width direction offers sliding slot 31, and sliding slot 31 and card slot 21 are located at sustained height, and it deviates from
It is in hatch frame that chamber door 3, which is hinged side side,.
Sliding is connected with the bayonet lock 4 agreed with therewith in sliding slot 31, and 31 length of sliding slot is more than bayonet lock 4；In bayonet lock 4 and sliding slot
31 far from being provided with spring 41 between open at one end；Spring 41 is two, is arranged in longitudinal arrangement；41 one end of spring is fixedly connected
In 4 end of bayonet lock, the other end is fixedly connected on 31 end of sliding slot.
When chamber door 3 be closed side opening 2, and spring 41 in the raw when, bayonet lock 4 extends under the action of spring 41
Sliding slot 31, and be connected in card slot 21.
With reference to Fig. 3, electromagnet 42 is installed far from open at one end in sliding slot 31, electromagnet 42 is using embedded corresponding mounting groove
Mode fix；Bayonet lock 4 is set as being made of ferrimagnet, selects steel and alloy herein.
When needing to open chamber door 3, user need to only open electromagnet 42, so that it may with the magnetism generated using electromagnet 42
Bayonet lock 4 is attracted so that 4 compressed spring 41 of bayonet lock and towards electromagnet 42 move；Card slot 21 is completely disengaged in bayonet lock 4
Afterwards, user can open chamber door 3.
In order to avoid being had an impact to the use of electromagnet 42, chamber door 3 is ferromagnetic using not having near sliding slot 31
Material is made.
Control device is provided on chamber door 3 in order to realize the control to electromagnet 42 with reference to Fig. 3, control device includes
The secret key slot 32 being opened on chamber door 3；In order to be arranged secret key slot 32, chamber door 3 32 position of secret key slot it is inwardly protruding have it is corresponding
Convex block；Secret key slot 32 is opened up along 3 thickness direction of chamber door, and it is in hatch frame away from one end of 1 inner cavity of emergency power supply case.
Secret key slot 32 is provided with the secret key 5 being adapted to therewith, in use, secret key 5 need to be only plugged to secret key slot 32 by user,
And it drives secret key 5 to make correct action can to control the unlatching of electromagnet 42.
With reference to Fig. 4, range sensor 61,61 main part of range sensor are installed in the one end of secret key slot 32 far from opening
It point is installed in chamber door 3, test side extends to secret key slot 32, and is open side towards secret key slot 32.
Secret key 5（It is shown in Fig. 1）It is in the form of a column with secret key slot 32, secret key 5 is plugged in secret key slot 32, and end is extended
Secret key slot 32 is open；Extend the end of secret key slot 32 integrally formed with convenient for users to hand-held hand-held part in secret key 5.
Secret key hole 51 is offered towards 61 one end of range sensor in secret key 5, the length in secret key hole 51 is along secret key length side
To extension, and its towards one end of range sensor 61 be in hatch frame.The test side of range sensor 61 towards secret key hole 51,
For detecting its test side to distance of the secret key hole 51 far from open at one end, and export distance detection signal.
With reference to Fig. 5, control device further includes control assembly 62, and control assembly 62 selects MCU herein, and it is suitable to select
Microcontroller etc..Control assembly 62 is coupled to（Electrical connection）The output end of range sensor 61 is further coupled to electromagnet 42（Mark
In Fig. 3）.
In use, control assembly 62 receives and responds the distance detection signal of the output of range sensor 61, with according to distance
Signal control electromagnet 42 is detected to open and close；In advance, user first sets preset value in control assembly 62, and preset value is distance
61 test side of sensor is to secret key hole 51 far from the correct distance size being open.
When secret key 5 is inserted into secret key slot 32 by user, the distance detection signal that range sensor 61 exports is equal to preset value,
Then control assembly 62, which controls electromagnet 42 and opens, attracts bayonet lock 4 to be detached from card slot 21, so that user opens chamber door 3.
With reference to Fig. 6, in order to reinforce safety, secret key hole 51 is provided with eight, and eight secret key holes 51 are along 5 outer wall circumference of secret key
Face is arranged, and the length in eight secret key holes 51 is different, and the length in only one of which secret key hole 51 meets preset value.
After being plugged to secret key 5 in secret key slot 32, needs correctly to rotate secret key 5, make correct secret key hole 51
61 test side of alignment distance sensor only can just control the unlatching of electromagnet 42, to strengthen the safety of secret key 5 at this time
Property.
With reference to Fig. 2 and Fig. 6, in order to judge 5 amount of spin of secret key, convenient for users to operation, in 32 opening of secret key slot along it
Scale is portrayed in edge.Offer strip 52, the thickness in secret key 5 diametrically of strip 52 along its length on 5 outer wall of secret key
Degree is 3mm or so, is made of rubber.
It is offered in secret key slot 32 and agrees with strip slot 321,51 quantity phase of 321 quantity of strip slot and secret key hole with strip 52
Together；When 5 grafting secret key slot 32 of secret key, strip 52 is clamped in strip slot 321.Because 52 thickness of strip is smaller, and is made of rubber,
So not influencing user rotates secret key 5, and strip 52 can be utilized to position.When strip 52 is clamped strip slot 321, secret key
51 alignment distance sensor 61 of hole（It is shown in Fig. 4）Test side, to ensure using effect.
Referring to Fig.1, secret key 5 is provided with eight, and 51 length of secret key hole in eight secret keys 5 is different, and portrays respectively orderly
Number；It is fixedly connected with placing box 33 in 1 outside of emergency power supply case；Placing box 33 is in hollow structure, and presents hatch frame, secret key
5 are positioned over when flat in placing box 33.The quantity of secret key 5 increases the safety for helping to enhance secret key 5.
With reference to Fig. 4 and Fig. 5, travel switch 7 is installed far from open at one end in secret key slot 32, travel switch 7 be series at away from
From sensor 61, range sensor 61 is connected to the normally opened contact of travel switch 7, and travel switch 7 is made to be in normally open.Stroke
The movable contact of switch 7 extends into secret key slot 32, and towards its side that is open.
When secret key 5 is not plugged in secret key slot 32,7 break distance sensor 61 of travel switch；When secret key 5 be plugged to it is close
Spoon slot 32, and the movable contact of travel switch 7 is touched, range sensor 61 is connected in 7 switching state of travel switch.
According to above-mentioned setting, 7 energy saving consumption of travel switch can be utilized.
Referring to Fig.1 and Fig. 5, hidden camera 8 has been also coupled between travel switch 7 and range sensor 61, it is hidden
Formula camera 8 is parallel to range sensor 61.When range sensor 61 is connected in 7 switching state of travel switch, synchronous unlatching is hidden
Cover formula camera 8.Hidden camera 8 is mounted in the room for placing emergency power supply case 1, and images end towards emergency power supply case
1, to acquire the information for the personnel for opening chamber door 3.
To ensure that using effect, hidden camera 8 are electrically connected with data storage hard disk.
Use process：Related personnel first sets specified preset value in control assembly 62, and by 5 serial number of correct secret key and
Amount of spin tells regular user.
When needing to open chamber door 3, user first takes out correct secret key 5 out of placing box 33, and secret key 5 is plugged to
In secret key slot 32；After secret key 5 touches 7 movable contact of travel switch, range sensor 61 is synchronous with hidden camera 8 to be opened.
Follow-up user drives secret key 5 to rotate correct amount of spin so that 51 alignment distance sensor 61 of correct secret key hole
Test side, then control assembly 62 can control electromagnet 42 unlatching, with drive bayonet lock 4 be detached from card slot 21, at this time chamber door 3 can beat
It opens.
The above is only the preferred embodiment of the utility model, and the scope of protection of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the scope of protection of the utility model.It should refer to
Go out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (8)
1. a kind of EPS fire-fighting equipments emergency power supply safety device, including emergency power supply case in hollow structure（1）, institute
State emergency power supply case（1）Offer the side opening of inner cavity connection therewith（2）, the side opening（2）The interior hinged case being adapted to therewith
Door（3）, it is characterised in that：The side opening（2）And chamber door（3）The opposite side of hinged side offers card slot（21）, described
Card slot（21）Towards chamber door（3）The side of hinged side is in hatch frame, the chamber door（3）Sliding slot is offered in the width direction
（31）, the sliding slot（31）Away from chamber door（3）One end of hinged side is in hatch frame, the sliding slot（31）Interior sliding is connected with card
Pin（4）, the sliding slot（31）Length is more than bayonet lock（4）Length, and it is towards chamber door（3）One end of hinged side and bayonet lock（4）It
Between be provided with spring（41）, the bayonet lock（4）Extend sliding slot（31）, and it is connected in card slot（21）, the sliding slot（31）Direction
Chamber door（3）One end of hinged side is provided with electromagnet（42）, the bayonet lock（4）With ferromagnetism, the chamber door（3）On be connected with
For controlling electromagnet（42）The control device of keying, the control device include the secret key for control device for opening（5）, institute
State secret key（5）It is placed in emergency power supply case（1）Outside.
2. EPS fire-fighting equipments emergency power supply safety device according to claim 1, it is characterised in that：The case
Door（3）Through-thickness offers secret key slot（32）, the secret key slot（32）Away from emergency power supply case（1）Inner cavity side is in opening
Structure, the secret key（5）Grafting secret key slot（32）, and secret key hole is offered along its length（51）, the secret key hole（51）Court
To emergency power supply case（1）Inner cavity one end is in hatch frame, and the control device includes,
Range sensor（61）, it is set to secret key slot（32）One end of opposed open, test side is towards secret key hole（51）, it is used for
Detection and secret key hole（51）Spacing between open opposite sides, and export distance detection signal；
Control assembly（62）, it is coupled to the range sensor（61）Output end and electromagnet（42）, receive response distance detection
Signal, and electromagnet is controlled according to distance detection signal（42）It opens and closes.
3. EPS fire-fighting equipments emergency power supply safety device according to claim 2, it is characterised in that：The control
Component processed（62）Electromagnet is controlled according to distance detection signal（42）, when distance detection signal is equal to preset value, control assembly
（62）Open electromagnet（42）.
4. EPS fire-fighting equipments emergency power supply safety device according to claim 2, it is characterised in that：It is described close
Spoon（5）With secret key slot（32）It is in the form of a column, the secret key hole（51）To be multiple, multiple secret key holes（51）Along secret key（5）Outside
Wall periphery is arranged, and length is different.
5. EPS fire-fighting equipments emergency power supply safety device according to claim 4, it is characterised in that：It is described close
Spoon slot（32）Opening is provided with scale along edge.
6. EPS fire-fighting equipments emergency power supply safety device according to claim 5, it is characterised in that：It is described close
Spoon（5）To be multiple, the emergency power supply case（1）Outside is provided with placing box（33）, the placing box（33）It is hollow and be in top
Hatch frame, multiple secret keys（5）On secret key hole（51）Length is different, multiple secret keys（5）It is positioned over placing box
（33）It is interior, multiple secret keys（5）It is respectively arranged with serial number.
7. EPS fire-fighting equipments emergency power supply safety device according to claim 2, it is characterised in that：It is described close
Spoon slot（32）Open at one end is provided with travel switch（7）, the travel switch（7）Movable contact extends into secret key slot
（32）, and towards secret key slot（32）Be open side, the travel switch（7）It is series at range sensor（61）, the distance biography
Sensor（61）It is coupled to travel switch（7）Normally opened contact.
8. EPS fire-fighting equipments emergency power supply safety device according to claim 7, it is characterised in that：The row
Cheng Kaiguan（7）And range sensor（61）Between be coupled with hidden camera（8）, the hidden camera（8）It is parallel to
Range sensor（61）, and be set to and place emergency power supply case（1）Room in, the hidden camera（8）Image end court
To emergency power supply case（1）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820144312.3U CN207853529U (en) | 2018-01-26 | 2018-01-26 | EPS fire-fighting equipment emergency power supply safety devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820144312.3U CN207853529U (en) | 2018-01-26 | 2018-01-26 | EPS fire-fighting equipment emergency power supply safety devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207853529U true CN207853529U (en) | 2018-09-11 |
Family
ID=63413037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820144312.3U Active CN207853529U (en) | 2018-01-26 | 2018-01-26 | EPS fire-fighting equipment emergency power supply safety devices |
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| Country | Link |
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| CN (1) | CN207853529U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109802317A (en) * | 2019-02-25 | 2019-05-24 | 志纳电器有限公司 | EPS fire-fighting emergency power supply safety device |
-
2018
- 2018-01-26 CN CN201820144312.3U patent/CN207853529U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109802317A (en) * | 2019-02-25 | 2019-05-24 | 志纳电器有限公司 | EPS fire-fighting emergency power supply safety device |
| CN109802317B (en) * | 2019-02-25 | 2024-03-15 | 志纳电器有限公司 | Safety protection device for EPS fire emergency power supply |
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