CN207485285U - For the normally opened fire resistant doorsets of fire-fighting system - Google Patents
For the normally opened fire resistant doorsets of fire-fighting system Download PDFInfo
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- CN207485285U CN207485285U CN201721558739.XU CN201721558739U CN207485285U CN 207485285 U CN207485285 U CN 207485285U CN 201721558739 U CN201721558739 U CN 201721558739U CN 207485285 U CN207485285 U CN 207485285U
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- Prior art keywords
- resistant doorsets
- fire resistant
- fire
- normally opened
- fighting system
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Abstract
The utility model discloses a kind of normally opened fire resistant doorsets for fire-fighting system, are related to fire resistant doorsets field, it is intended to solve the problems, such as that normally opened fire resistant doorsets can not be closed automatically, its key points of the technical solution are that：A kind of normally opened fire resistant doorsets for fire-fighting system, including doorframe, side and the hinged fire resistant doorsets of doorframe, the delocalization formula door closer being set between fire resistant doorsets and doorframe and limits device, fire prevention door exterior surface movable end is provided with hook gripping member, limits device includes housing, the straight slot being opened on housing and the card for being rotationally connected with enclosure interior, stepper motor is fixedly installed in housing, stepper motor is connected with automatic opening-closing, automatic opening-closing includes, temperature testing organization, control mechanism and power sector.A kind of normally opened fire resistant doorsets for fire-fighting system of the utility model by limiting the rotation of door close so as to fulfill the normally opened of door close, the limitation for door close are unclamped when fire occurs, so as to fire resistant doorsets be pushed to close by door closer.
Description
Technical field
The utility model is related to fire resistant doorsets field, more specifically, it relates to a kind of normally opened fire prevention for fire-fighting system
Door.
Background technology
Fire resistant doorsets are mainly used for, in burst fire, preventing the intensity of a fire from continuing to spread, in the market more than fire resistant doorsets pacifying
Door closer is filled, door closer has two kinds of delocalization formula and positioning formula, and delocalization formula ensure that the normally off of fire-proof doors and windows, position formula
It ensure that the current normally open of ventilation, delocalization formula, which is inconvenient to divulge information under daily no fire condition, passes through, and positioning formula is in fire
Human hand is needed to move closing fire resistant doorsets during calamity generation again to bring inconvenience, both door closers cannot all meet in Current Building ' will
It asks.
In view of the above-mentioned problems, a kind of fire prevention being automatically closed that the Chinese patent that notification number is CN106567662A is announced
Door, is characterized in that：Including fireproof door frame, by hinge for fireproof with the hinged fire resistant doorsets of fireproof door frame, on fire resistant doorsets
The fire-proof door closer main body in portion and temperature control locating automatic release device；It is limited in its natural state by temperature control locating automatic release device
System protection door closer main body, so that fire resistant doorsets are in normally open, temperature control locating automatic release device when a fire
The limitation for fire-proof door closer main body is unclamped, so as to fire resistant doorsets be pushed to turn to closed state by fire-proof door closer main body.
The program solves the problems, such as that normally opened fire resistant doorsets can not be closed automatically by setting specific fireproof door closer,
The utility model provides a kind of new technical solution to solve the above problems simultaneously.
Therefore it needs to propose a kind of new scheme to solve the problems, such as this.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of for the normally opened of fire-fighting system
Fire resistant doorsets by limiting the rotation of door close so as to fulfill the normally opened of door close, are unclamped when fire occurs for door close
Limitation, so as to fire resistant doorsets be pushed to close by door closer.
The above-mentioned technical purpose of the utility model technical scheme is that：One kind is used for fire-fighting system
Normally opened fire resistant doorsets, including doorframe, side and the hinged fire resistant doorsets of doorframe hinge for fireproof, be set between fire resistant doorsets and doorframe
Delocalization formula door closer and the limits device for being fixedly installed in constructure ground or wall, the fire prevention door exterior surface activity
End, which is provided with, overlooks T-shaped hook gripping member, and the limits device includes housing, is opened in what is passed through on housing for hooking gripping member end
Straight slot and the card for being rotationally connected with enclosure interior, the interior fixed setting of the housing are useful for the stepping electricity of driving card piece rotation
Machine, the stepper motor are connected with automatic opening-closing, and the automatic opening-closing includes, and temperature testing organization is set to shell
In vivo, for detecting environment temperature, and output temperature detects signal；Control mechanism is coupled to temperature testing organization output terminal, uses
In receiving and responding to temperature detection signal, to control the startup of stepper motor；And power sector, for being opened automatically to be described
It closes device and operating voltage is provided.
By using above-mentioned technical proposal, gripping member end is hooked in normal state and is in enclosure interior across straight slot, and block
Piece, which is in, to be hooked between gripping member end and inner walls, and housing is detached from, and then fire resistant doorsets are applied so as to limit hook gripping member by card
Add pulling force to offset the thrust of delocalization formula door closer so that fire resistant doorsets always in opening, be the current of building and
Ventilation provides facility；When fire temperature raising occurs, temperature testing organization detects that environment temperature increases, and output temperature is examined
Signal is surveyed, control mechanism starts stepper motor after receiving temperature detection signal, and stepper motor drives card rotation, and card rotation is de-
Rotation from fire resistant doorsets behind hook gripping member end is unrestricted, so as to which delocalization formula door closer release thrust pushes fire resistant doorsets to turn to
Closed state；By above-mentioned design fire resistant doorsets under normal circumstances in normally open, can be closed automatically after fire occurs,
Simultaneously compared to the automatic closure for realizing fire resistant doorsets in documents by replacing specific fireproof door closer, it is only necessary to original
Normally closed type fire resistant doorsets on add and hook gripping member and limits device, reach the technique effect for reducing improving cost, be more applicable in
In the improvement engineering of existing fire resistant doorsets.
The utility model is further arranged to：The temperature testing organization includes the temperature sensor being fixed in housing,
Temperature sensor is coupled with control mechanism, and output temperature detection signal.
The utility model is further arranged to：The control mechanism controls opening for stepper motor according to temperature detection signal
It closes, and when temperature detection signal is more than predetermined value, and after predetermined hold-time, control mechanism starts stepper motor.
The utility model is further arranged to：The control mechanism includes, comparison circuit, and the light received is detected signal
With exporting a comparison signal compared with predetermined value；Anti-clutter circuit, for the situation of change according to comparison signal in the predetermined time
One control OFF signal of output；Switching circuit is coupled to the anti-clutter circuit, to according to the control OFF signal control stepper motor
Break-make between power sector.
By using above-mentioned technical proposal, predetermined value is risen to over when fire temperature occurs, causes temperature sensor defeated
The temperature detection signal increase gone out, reference voltage is less than temperature detection signal, comparator output high level, if the predetermined time at this time
Comparator output is still for high level afterwards, then the control OFF signal of anti-clutter circuit output is high level, switching circuit turn-on power with
Stepper motor, stepper motor driving card rotates and is detached from the end for hooking gripping member, unrestricted so as to the rotation of fire resistant doorsets, indefinite
Position formula door closer release thrust pushes fire resistant doorsets to turn to closed state, and then realizes that fire resistant doorsets are automatically closed when fire occurs
Technique effect.
The utility model is further arranged to：The housing is provided with accumulator, and the accumulator is provided for power sector
Input current.
By using above-mentioned technical proposal, by providing input for power sector independently of the accumulator of building electric power system
Electric current, so as to avoid stepper motor being caused not start normally due to building powers off in fire.
The utility model is further arranged to：The hook gripping member is detachably connected with fire resistant doorsets.
By using above-mentioned technical proposal, when finding that fire and the temperature near fire resistant doorsets not yet increase, escape personnel
Can gripping member and fire resistant doorsets be hooked with manual separation so that the rotation of fire resistant doorsets can equally be detached from limitation, without waiting for limits device
It unclamps and hooks gripping member, reach the technique effect that can close fire resistant doorsets in advance.
The utility model is further arranged to：The hook gripping member is fixedly installed connector with fire resistant doorsets connecting pin, described
Fire resistant doorsets are fixedly installed the connector sleeve with connector socket cooperation, and bolt is offered vertically through the connector and connector sleeve
Hole, in the pin hole grafting be combined with bolt, crown cap is fixedly installed in the catch top.
By using above-mentioned technical proposal, need from bottom to top to extract bolt when closing fire resistant doorsets in advance, delocalization formula is closed
Door device release thrust pushes fire resistant doorsets to turn to closed state, at the same time hooks gripping member and is automatically performed disengaging with fire resistant doorsets；Pass through
Above-mentioned simple structure realizes the design for disassembly for hooking gripping member and fire resistant doorsets, reaches dismounting efficiently technique effect, for valuable fire
Calamity escape gains time.
The utility model is further arranged to：The top cap upper surface is fixedly installed draw ring.
By using above-mentioned technical proposal, the point of application of an extraction bolt is provided by draw ring, is provided just to extract bolt
Profit, while draw ring is also prompting mark, reminds escape personnel that can realize being automatically closed for fire resistant doorsets by extracting bolt.
In conclusion the utility model has the advantages that：Fire resistant doorsets are in normally open under normal circumstances, from
And the current and ventilation for building provides facility, fire resistant doorsets can in time and be automatically closed when a fire；Compared to more
Specific fire resistant doorsets closer is changed, the technique effect for having improving cost cheaper；It is powered by setting independently of building
The accumulator of system provides input current for power sector, effectively avoids that fire resistant doorsets is caused not close normally due to building powers off
It closes；By hooking gripping member and fire resistant doorsets design for disassembly so that fire resistant doorsets can be turned off manually in escape personnel.
Description of the drawings
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is that the utility model blocks figure, which has carried out section view processing, it is main represent limits device with
Hook the matching relationship of gripping member；
Fig. 3 is the circuit diagram of the utility model automatic opening-closing；
Fig. 4 is the circuit diagram of the utility model power sector；
Fig. 5 is the matching relationship for blocking figure, mainly representing hook gripping member and door close of the utility model；
Fig. 6 is the structure diagram of the utility model bolt.
In figure：1st, doorframe；11st, fire resistant doorsets；12nd, delocalization formula door closer；13rd, gripping member is hooked；14th, housing；141st, straight slot；
142nd, card；143rd, stepper motor；144th, accumulator；15th, connector；151st, connector sleeve；152nd, pin hole；153rd, bolt；
154th, top cap；155th, draw ring；21st, control mechanism；22nd, temperature sensor；23rd, comparison circuit；231st, reference voltage generating circuit；
24th, anti-clutter circuit；25th, switching circuit.
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is described in detail.
For the normally opened fire resistant doorsets of fire-fighting system, as shown in Figure 1, passing through hinge for fireproof including doorframe 1, side and doorframe 1
Hinged fire resistant doorsets 11 and the delocalization formula door closer 12 being set between fire resistant doorsets 11 and doorframe 1,11 outer surface of fire resistant doorsets
Movable end, which is provided with, overlooks T-shaped hook gripping member 13, and hook gripping member 13 is hard stainless steel, and constructure ground bolt is fixed restricted
Device, as shown in Figure 1 and Figure 2, limits device include the housing 14 of rectangle, through the wall for being opened in 14 face fire resistant doorsets 11 of housing
Face confession hooks the gripping member 13 end straight slot 141 passed through and the card 142 being rotationally connected with inside housing 14, consolidates in middle casing 14
Surely the stepper motor 143 for card 142 to be driven to rotate is provided with, stepper motor 143 is connected with automatic opening-closing, opens automatically
It closes device and includes the temperature testing organization being set in housing 14, the control mechanism 21 for being coupled to temperature testing organization output terminal
（It is shown in Fig. 3）And the power sector for providing operating voltage for automatic opening-closing.
The end for hooking gripping member 13 under normal circumstances is in across straight slot 141 in housing 14, and card 142, which is in, hooks gripping member 13
End and housing 14 inner wall between, hook gripping member 13 end so as to be limited by card 142 and be detached from housing 14, and then hold by hooking
Part 13 applies pulling force to overcome the thrust of delocalization formula door closer 12 to fire resistant doorsets 11, reaches the technology that limitation fire resistant doorsets 11 are closed
Effect, the current and ventilation for building provide facility；Temperature testing organization detects that environment temperature increases when a fire,
Signal is detected to 21 output temperature of control mechanism, control mechanism 21 starts stepper motor 143, stepping electricity according to temperature detection signal
143 control card 142 of machine turns to the end for being detached from and hooking gripping member 13, hook under this state gripping member 13 is unrestricted, fire resistant doorsets 11 not
Under tension again pushes fire resistant doorsets 11 to turn to closed state, realizes fire hair so as to which delocalization formula door closer 12 discharges thrust
The automatic closing function of fire resistant doorsets 11 when raw.
In the utility model, power sector circuit diagram passes through as shown in figure 4, its input terminal is coupled to 220V AC powers
The first direct current Vout_1 is exported after rectification decompression filtering, first direct current Vout_1 is 12V；Second direct current Vout_2,
Second direct current Vout_2 is 5V, so that control mechanism 21 uses, in addition, from the input terminal of power sector directly to stepping electricity
Machine 143 is powered, i.e., the power supply of stepper motor 143 is 220V AC powers；Explanation is needed herein as shown in Fig. 2, the 220V is exchanged
Power supply is provided by being fixedly installed in the accumulator 144 inside housing 14, so as to by the accumulator independently of building electric power system
144 are used as power supply, effectively prevent building being caused to power off, and then limits device is caused to can not work normally because of fire Burnout circuit
The problem of occur.
As shown in Figure 2 and Figure 3, temperature testing organization includes the temperature sensor 22 being fixed in housing 14, temperature sensor
22 couple with control mechanism 21, for detecting the environment temperature near fire resistant doorsets 11, and output temperature detection signal；It is coupled to temperature
The control mechanism 21 for spending testing agency controls the keying of stepper motor 143 according to temperature detection signal, and works as temperature detection signal
More than predetermined value, and after predetermined hold-time, control mechanism 21 starts stepper motor 143.
The control mechanism 21 of the utility model, includes as shown in Figure 2 and Figure 3, comparison circuit 23, and the light received is detected
Signal exports a comparison signal compared with predetermined value；Anti-clutter circuit 24, for the change according to comparison signal in the predetermined time
One control OFF signal of change situation output；Switching circuit 25 is coupled to the anti-clutter circuit 24, to according to control OFF signal control step
Break-make between stepper motor 143 and power sector.
Wherein, comparison circuit 23 includes, a reference voltage generating circuit 231, has a first resistor R1, one end coupling
In the second direct current Vout_2, the other end is grounded after connecting with a second resistance R2；Wherein, from first resistor R1 and second resistance
Reference voltage is generated between R2；One comparator A has an in-phase input end, an inverting input and an output terminal, homophase input
End is coupled to the output terminal of temperature sensor 22, and inverting input is coupled to reference voltage, and output terminal exports a comparison signal.Than
It is active voltage comparator compared with device A, power access end is coupled to the second direct current Vout_2, ground terminal ground connection.
Wherein, anti-clutter circuit 24 includes, and a delay circuit, input terminal is coupled to the output terminal of comparator A and output
One delay comparison signal；And one and door AND_1, there are two input terminal and an output terminals for tool, and first input end is with being delayed
The output terminal coupling of circuit, the output terminal of the second input terminal and comparator A couple, output terminal output control OFF signal.
Delay circuit can select the delay circuit being made of 555 chips for core in the utility model, due to delay electricity
Road has been disclosed, and is the prior art, and those skilled in the art should understand that its operation principle, no longer superfluous herein to tell.
In addition, switching circuit 25 includes, a NPN triode Q1, emitter is grounded, and base stage passes through a 3rd resistor R3 couplings
It is connected to control OFF signal and passes through one the 4th resistance R4 and emitter altogether；One relay KM, it is straight that coil one end is coupled to first
Galvanic electricity Vout_1, the other end are coupled to the collector of the NPN triode Q1, normally opened contact switch S be serially connected with power sector with
Between stepper motor 143；One diode D1, cathode are coupled to first direct current Vout_1, and anode is coupled to NPN triode
Between the coil of the collector of Q1 and relay KM.
The course of work of control mechanism 21 is as follows：
The reference voltage made comparisons with detectable voltage signals is exported by reference to voltage generation circuit 231, is passed according to temperature
The Normal Environmental Temperature that sensor 22 detects presets a lifting range, and in preset lifting range, temperature sensor 22 is defeated
The value gone out is less than or equal to reference voltage, comparator A output low levels, through with after door AND_1 still for low level, triode at this time
Q1 is not turned on；When the value that temperature sensor 22 exports is more than reference voltage, comparator A output high level is input to delay circuit,
It is exported after delay a period of time, if comparator A outputs instantly are still high level, the control OFF signal with door AND_1 outputs is
High level, turn-on transistor Q1, relay KM obtain electric, inner-core generation magnetic attraction normally opened contact switch S, conducting alternating current
Source and stepper motor 143,143 control card 142 of stepper motor turn to the end for being detached from and hooking gripping member 13, so as to fire resistant doorsets 11 by
Delocalization formula door closer 12（It is shown in Fig. 1）Thrust turn to closed state.
Find that above-mentioned design has the drawbacks of fire resistant doorsets 11 can not artificially be turned off manually in practical fire drilling, thus such as
It shown in Fig. 5, hooks gripping member 13 and is detachably connected with fire resistant doorsets 11, so as to which escape personnel can hook gripping member 13 and fire resistant doorsets by fractionation
11 so that fire resistant doorsets 11 are equally no longer influenced by the pulling force for hooking gripping member 13, and then realize the technique effect for closing fire resistant doorsets 11 in advance.
The utility model is realized in the following way hooks being detachably connected for gripping member 13 and fire resistant doorsets 11, such as Fig. 5, Fig. 6 institute
Show, hook gripping member 13 and 11 connecting pin of fire resistant doorsets integrally formed with connector 15, connector 15 can be rectangle stainless steel, fire resistant doorsets
11 are welded with the connector sleeve 151 being socketed with 15 gap of connector, are offered vertically through connector 15 and connector sleeve 151 slotting
Pin hole 152, grafting is combined with bolt 153 in pin hole 152, it should be noted that 153 top of bolt is integrally formed crown cap
154, the face area of top cap 154 is more than the disc area of pin hole 152, and the effect of top cap 154 is to prevent bolt 153 by upper
Pin hole 152 is skidded off under and；When needing to close fire resistant doorsets 11 in advance, 153 delocalization formula door closer of bolt is from bottom to top extracted
12（It is shown in Fig. 1）Release thrust pushes fire resistant doorsets 11 to turn to closed state, at the same time hooks gripping member 13 and automatically disengages fire prevention
Door 11.
For ease of extracting bolt 153, as shown in Figure 5, Figure 6,154 upper surface of top cap is welded with draw ring 155, thus by
Draw ring 155 provides the point of application of an extraction bolt 153, and then provides facility to extract bolt 153, while draw ring 155 is also
One prompting mark reminds escape personnel that can realize being automatically closed for fire resistant doorsets by extracting bolt 153.
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, all technical solutions belonged under the utility model thinking belong to the scope of protection of the utility model.It should refer to
Go out, for those skilled in the art, several improvement under the premise of the utility model principle is not departed from 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 normally opened fire resistant doorsets for fire-fighting system, including doorframe（1）, side and doorframe（1）Hinge for fireproof is hinged to be prevented
Vent（11）, be set to fire resistant doorsets（11）With doorframe（1）Between delocalization formula door closer（12）And it is fixedly installed in building
Object ground or the limits device of wall, it is characterised in that：The fire resistant doorsets（11）It is T-shaped that outer surface movable end is provided with vertical view
Hook gripping member（13）, the limits device include housing（14）, be opened in housing（14）It is upper to supply to hook gripping member（13）What end passed through
Straight slot（141）And it is rotationally connected with housing（14）Internal card（142）, the housing（14）Interior fixed setting is useful for driving
Dynamic card（142）The stepper motor of rotation（143）, the stepper motor（143）Automatic opening-closing is connected with, it is described to open automatically
Device is closed to include,
Temperature testing organization is set to housing（14）It is interior, for detecting environment temperature, and output temperature detection signal；
Control mechanism（21）, temperature testing organization output terminal is coupled to, for receiving and responding to temperature detection signal, with control
Stepper motor（143）Startup；
And power sector, for providing operating voltage for the automatic opening-closing.
2. the normally opened fire resistant doorsets according to claim 1 for fire-fighting system, it is characterised in that：The temperature testing organization
Including being fixed on housing（14）Interior temperature sensor（22）, temperature sensor（22）With control mechanism（21）Coupling, and export
Temperature detection signal.
3. the normally opened fire resistant doorsets according to claim 2 for fire-fighting system, it is characterised in that：The control mechanism（21）
Stepper motor is controlled according to temperature detection signal（143）Keying, and when temperature detection signal is more than predetermined value, and persistently make a reservation for
After time, control mechanism（21）Start stepper motor（143）.
4. the normally opened fire resistant doorsets according to claim 3 for fire-fighting system, it is characterised in that：The control mechanism（21）
Including,
Comparison circuit（23）, the light received detection signal with predetermined value is compared and exports a comparison signal；
Anti-clutter circuit（24）, for the one control OFF signal of situation of change output according to comparison signal in the predetermined time；
Switching circuit（25）, it is coupled to the anti-clutter circuit（24）, to according to the control OFF signal control stepper motor
（143）Break-make between power sector.
5. the normally opened fire resistant doorsets according to claim 1 for fire-fighting system, it is characterised in that：The housing（14）Setting
There is accumulator（144）, the accumulator（144）Input current is provided for power sector.
6. the normally opened fire resistant doorsets according to claim 1 for fire-fighting system, it is characterised in that：The hook gripping member（13）With
Fire resistant doorsets（11）It is detachably connected.
7. the normally opened fire resistant doorsets according to claim 6 for fire-fighting system, it is characterised in that：The hook gripping member（13）With
Fire resistant doorsets（11）Connecting pin is fixedly installed connector（15）, the fire resistant doorsets（11）It is fixedly installed and connector（15）Socket
The connector sleeve of cooperation（151）, through the connector（15）And connector sleeve（151）Offer pin hole vertically（152）, it is described to insert
Pin hole（152）Interior grafting is combined with bolt（153）, the bolt（153）Crown cap is fixedly installed in top（154）.
8. the normally opened fire resistant doorsets according to claim 7 for fire-fighting system, it is characterised in that：The top cap（154）On
End face is fixedly installed draw ring（155）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721558739.XU CN207485285U (en) | 2017-11-20 | 2017-11-20 | For the normally opened fire resistant doorsets of fire-fighting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721558739.XU CN207485285U (en) | 2017-11-20 | 2017-11-20 | For the normally opened fire resistant doorsets of fire-fighting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207485285U true CN207485285U (en) | 2018-06-12 |
Family
ID=62474422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721558739.XU Expired - Fee Related CN207485285U (en) | 2017-11-20 | 2017-11-20 | For the normally opened fire resistant doorsets of fire-fighting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207485285U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630155A (en) * | 2019-10-03 | 2019-12-31 | 陆中艳 | Normally open assembly of emergency fireproof door |
| CN110630156A (en) * | 2019-10-03 | 2019-12-31 | 陆中艳 | Emergency fireproof door |
-
2017
- 2017-11-20 CN CN201721558739.XU patent/CN207485285U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630155A (en) * | 2019-10-03 | 2019-12-31 | 陆中艳 | Normally open assembly of emergency fireproof door |
| CN110630156A (en) * | 2019-10-03 | 2019-12-31 | 陆中艳 | Emergency fireproof door |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180612 Termination date: 20211120 |