CN206397417U - A kind of double curtain birail electric dual-use manual fire resistance rolling shutter doors of energy saving - Google Patents
A kind of double curtain birail electric dual-use manual fire resistance rolling shutter doors of energy saving Download PDFInfo
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- CN206397417U CN206397417U CN201720030046.7U CN201720030046U CN206397417U CN 206397417 U CN206397417 U CN 206397417U CN 201720030046 U CN201720030046 U CN 201720030046U CN 206397417 U CN206397417 U CN 206397417U
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- 238000000926 separation method Methods 0.000 description 7
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- 238000005381 potential energy Methods 0.000 description 4
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 235000019504 cigarettes Nutrition 0.000 description 1
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- 239000003063 flame retardant Substances 0.000 description 1
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Abstract
The utility model is related to a kind of double curtain birail electric dual-use manual fire resistance rolling shutter doors of energy saving, including supporting plate, mounting hole, door roller, door curtain guide rail, door curtain, drive sprocket axle, drive sprocket, spool A, reel A, driven sprocket, sprocket wheel A, spool B, reel B, sprocket wheel B；The drive sprocket and driven sprocket are connected by chain A, and sprocket wheel A and sprocket wheel B are connected by chain B；Also include sprocket shaft A, electromagnetic clutch A, sprocket shaft B, electromagnetic clutch B and controller；Plane scroll spring is equipped with the reel A and reel B, one end of the plane scroll spring is fixedly connected with spool A, spool B, and the other end is fixedly connected with reel A, reel B inwall.The utility model can reduce rolling door acc power, energy saving, and can individually switch single rolling screen door as needed or two rolling screen door are switched together, again can be easy to operate and laborsaving in outdoor manual switch gate during power failure.
Description
Technical field
The utility model is related to rolling screen door technical field, more particularly to a kind of energy saving double curtain birail electrics manual two
Use fire resistance rolling shutter door.
Background technology
Fire resistance rolling shutter door is a kind of fire fighting device suitable at the larger hole of building, except the use for possessing common rolling screen door
Place is outer, also with fire prevention, every the specific function of cigarette, suppression fire spread.In order to obtain preferable flameproof effect, existing one kind is adopted
It is used for electronic pair of curtain double track fire resistance rolling shutter door of the track that door curtain is slided, this electric fireproof curtain door with two door curtains, two
Lifting is driven by a flame-retardant door driving machine, and door roller drives two spool turns by chain-drive mechanism, and reel drives twine respectively
The door curtain being wound on reel slides up and down to realize switch gate along door curtain guide rail.Existing pair of curtain double track fire resistance rolling shutter door is used
Two sprocket wheels are directly connected with chain, and two sprocket wheels are linkages, i.e., two door curtains can only Simultaneous Switching, it is impossible to separate operation,
Therefore, occur fire as common rolling screen door in use, also wanting two rolling screen door of Simultaneous Switching no, be operated in door roller
Under larger load, the life-span of door roller is influenceed, electric energy is also wasted.
Secondly, by door curtain effect of weight, door roller will not only overcome the friction between transmission mechanism, door curtain and door curtain guide rail
Power, will also overcome the weight of rolling screen door, and it is continually changing during being supported on switch gate, when just opening the door, door curtain deadweight
Larger, door roller load is maximum, and with the rising of door curtain, the load of door roller constantly reduces；At closing time then on the contrary, just closing the door
When, the load of door roller is maximum, and with the decline of door curtain, the load of door roller constantly mitigates, or even the deadweight of door curtain can drive
Door roller is rotated.The power of door roller will be configured according to its maximum load, otherwise can not open rolling screen door, and power is bigger,
Power consumption is bigger；Secondly, during work, even if load reduction, door roller will be also operated on lowest power, cause electricity
The waste of energy, increases expense.
In addition, door roller, which is typically carried, pulls chain for opening Door by Hand, but present many rolling screen door are in order to ensure safety,
Wicket is not provided with rolling screen door, indoor the manually opened roller shutter of chain is pulled so still cannot be introduced into when running into power failure
Door；Secondly, pull rolling screen door with pulling chain, due to will be by door roller gearbox, chain gear transmission, speed reducing ratio is larger, opens
The speed for opening rolling screen door is very slow.
Utility model content
The utility model overcomes the deficiencies in the prior art can reduce rolling door acc power, energy saving there is provided a kind of
Double curtain birail electric dual-use manual fire resistance rolling shutter doors, and single rolling screen door or two rolling screen door can be individually switched as needed together
Switch, can switch rolling screen door in outdoor manual again during power failure, easy to operate and laborsaving.
The utility model is achieved through the following technical solutions：
A kind of double curtain birail electric dual-use manual fire resistance rolling shutter doors of energy saving, including on the wall of door opening side
Rectangle support plate, the mounting hole located at four corners of supporting plate, the door roller on supporting plate, the door for being divided into door opening both sides
Curtain guide track, the door curtain that can be slided up and down along door curtain guide rail and supporting plate rotate connection and the active connected with door roller output shaft
Sprocket shaft, the drive sprocket being fixedly arranged on drive sprocket axle, spool A, the reel A for winding door curtain, driven sprocket, sprocket wheel A,
Spool B, the reel B for winding door curtain, sprocket wheel B；The drive sprocket and driven sprocket are connected by chain A, sprocket wheel A
It is connected with sprocket wheel B by chain B；Also include sprocket shaft A, energization mating type electromagnetic clutch A, sprocket shaft B, energization combination
Type electromagnetic clutch B and controller；
The spool A is fixedly connected with supporting plate, and reel A is enclosed on to rotate with it outside spool A and is connected, the sprocket shaft A
It is enclosed on to rotate with it outside spool A and is connected, the driven sprocket, which is enclosed on outside sprocket shaft A, is secured to connection；The sprocket wheel A sets
Connection is secured to outside reel A；The electromagnetic clutch A is enclosed on outside spool A to rotate with it and is connected, its driven disc A with
Reel A end is fixedly connected, and its driving disc spacing pressing A is fixedly connected with sprocket shaft A one end, electromagnetic clutch A and controller electricity
Connection；
The spool B is fixedly connected with supporting plate, and reel B is enclosed on to rotate with it outside spool B and is connected, the sprocket shaft B
It is enclosed on to rotate with it outside spool B and is connected, the sprocket wheel B, which is enclosed on outside sprocket shaft B, is secured to connection；The electromagnetic clutch
B is enclosed on to rotate with it outside spool B and is connected, and its driven disc B is fixedly connected with reel B end, its driving disc spacing pressing B and sprocket shaft B
One end be fixedly connected, electromagnetic clutch B and controller electrical connection；
Plane scroll spring is equipped with the reel A and reel B, one end of the plane scroll spring and spool A, spool
B is fixedly connected, and the other end is fixedly connected with reel A, reel B inwall.
When having electricity as electric rolling door in use, controlling electromagnetic clutch A, electromagnetic clutch B knot by controller
Close or separation just can control whether reel A and reel B rotates, also with regard to the single rolling screen door of controllable switch or two rolling screen door.Will
When two rolling screen door are switched together, controller is also turned on electromagnetic clutch A, electromagnetic clutch B circuits, electromagnetic clutch A, electricity
Magnet clutch B, which is powered, to be combined, and driving disc spacing pressing A and driven disc A link into an integrated entity sprocket shaft A and reel A, driving disc spacing pressing B and driven disc B
Also sprocket shaft B and reel B are also linked into an integrated entity；Door roller drives drive sprocket axle to rotate, and drive sprocket axle drives drive chain
Wheel is rotated, and drive sprocket drives driven sprocket to rotate by chain A, and driven sprocket drives sprocket shaft A, reel A and sprocket wheel A to turn
Dynamic, sprocket wheel A is rotated by chain B band movable sprockets B, and sprocket wheel B drives sprocket shaft B and reel B to rotate, and reel A, reel B are with two
Individual door curtain is slided up and down along door curtain guide rail realizes two door curtains switch gate together；When individually switching a rolling screen door, as long as logical
Cross controller and connect electromagnetic clutch A circuits, simultaneously switch off electromagnetic clutch B circuits, electromagnetic clutch A energizations are combined, electromagnetism
Clutch B power-off separation, reel B would not be rotated with sprocket wheel B and sprocket shaft B, and only driven sprocket passes through electromagnetic clutch A bands
Reel A rotations, also with regard to only one of which door curtain switch gate.
When closing rolling screen door, door curtain constantly declines, and its hanging portion is elongated, and deadweight is also increased, while reel A, reel
B drives plane scroll spring to tighten up, the increase of its elastic force, and the two is in poised state, and the transform gravitational energy of door curtain is plane whirlpool
The elastic potential energy of coil spring；Similarly, when opening rolling screen door, door curtain rises, and it, which is conducted oneself with dignity, reduces, and now reel A, reel B drive flat
Face scroll spring follows diastole, and its elastic force reduces, and the two is converted into still in poised state, the elastic potential energy of plane scroll spring
The gravitional force of door curtain.Under the power-assisted of plane scroll spring, either open rolling screen door and still close rolling screen door, door roller is only
Overcome the frictional force between transmission mechanism and door curtain and door curtain guide rail, its power can be substantially reduced, energy saving, and
It is that in a balanced way, can improve the working environment of door roller, increase the service life that it, which is supported in whole work process,.
When power failure hand switch rolling screen door, electromagnetic clutch A and electromagnetic clutch B power off separation, driving disc spacing pressing A and
Driven disc A separation, driving disc spacing pressing B and driven disc B are also separated, and reel A can freely be rotated around spool A, and reel B also can be around spool B certainly
By rotating, equally under the power-assisted of plane scroll spring, door curtain is pushed up with hand can easily open rolling screen door, or downward with hand
Door curtain is pulled also can easily to close rolling screen door, hand switch rolling screen door can be in field operation.
Further, the mounting hole is bar shaped, and is laterally set.It is conveniently adjusted the lateral attitude of supporting plate.
Further, the reel A is rotated by bearing and spool A and connected.It can rotate reel A more smooth.
Further, the reel B is rotated by bearing and spool B and connected.It can rotate reel B more smooth.
The beneficial effects of the utility model are：Using electromagnetic clutch A and electromagnetic clutch B make reel A and sprocket shaft A,
Reel B and sprocket shaft B are combined and separated under the control of the controller, can individually switch a rolling screen door, also can two rolling screen door
Switch together；When having an electricity can motor switch rolling screen door, can switch rolling screen door in outdoor manual sliding door curtain during power failure；Using plane
Scroll spring power-assisted spool turns, can reduce rolling door acc power during motor switch rolling screen door, energy saving, extension door roller is used
It is life-span, also very laborsaving during hand switch rolling screen door；Manual and electric automatically switch, it is manually operated be in outdoor it is operable, very
It is convenient.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is Fig. 1 A-A sectional views.
Fig. 3 is Fig. 1 B-B sectional views.
Fig. 4 is Fig. 2, Fig. 3 C-C sectional views.
Embodiment
Preferred embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings, so that advantage of the present utility model
It can be easier to be readily appreciated by one skilled in the art with feature, so as to make protection domain of the present utility model apparent clear and definite
Define.
As shown in Figure 1 to 4, embodiment of the present utility model, a kind of double curtain birail electric dual-use manuals of energy saving
Fire resistance rolling shutter door, including the rectangle support plate 1 on the wall of door opening side, the mounting hole 2 located at 1 four corners of supporting plate,
Door roller on supporting plate 1（It is not drawn into figure）, be divided into the door curtain guide rails of door opening both sides（It is not drawn into figure）, can be along door
The door curtain that curtain guide track is slided up and down（It is not drawn into figure）And supporting plate 1 rotates connection and the active connected with door roller output shaft
Sprocket shaft 3, the drive sprocket 4 being fixedly arranged on drive sprocket axle 3, spool A5, the reel A6 for winding door curtain, driven sprocket 7,
Sprocket wheel A8, spool B9, the reel B10 for winding door curtain, sprocket wheel B11；The drive sprocket 4 and driven sprocket 7 pass through chain
A12 is connected, and sprocket wheel A8 and sprocket wheel B11 are connected by chain B13；Also include sprocket shaft A14, energization mating type electromagnetism
Clutch A15, sprocket shaft B16, energization mating type electromagnetic clutch B17 and controller（It is not drawn into figure）；
The spool A5 is fixedly connected with supporting plate 1, and reel A6 is enclosed on outside spool A5 by bearing 18 and its company of rotation
Connect, the sprocket shaft A14 is enclosed on to rotate with it outside spool A5 and is connected, the driven sprocket 7 is enclosed on outside sprocket shaft A14 and it
It is fixedly connected；The sprocket wheel A8, which is enclosed on outside reel A6, is secured to connection；The electromagnetic clutch A15 is enclosed on outside spool A5
Rotate and be connected with it, its driven disc A19 is fixedly connected with reel A6 end, its driving disc spacing pressing A20 and sprocket shaft A14 one end are consolidated
Fixed connection, electromagnetic clutch A15 and controller electrical connection.
The spool B9 is fixedly connected with supporting plate 1, and reel B10 is enclosed on outside spool B9 by bearing 18 and its company of rotation
Connect, the sprocket shaft B16 is enclosed on to rotate with it outside spool B9 and is connected, the sprocket wheel B11 is enclosed on outside sprocket shaft B16 to be consolidated with it
Fixed connection；The electromagnetic clutch B17 is enclosed on to rotate with it outside spool B9 and is connected, its driven disc B21 and reel B10 end
It is fixedly connected, its driving disc spacing pressing B22 is fixedly connected with sprocket shaft B16 one end, electromagnetic clutch B17 and controller electrical connection.
Plane scroll spring 23 is equipped with the reel A6 and reel B10, one end of the plane scroll spring 23 and volume
Axle A5, spool B9 are fixedly connected, and the other end is fixedly connected with reel A6, reel B10 inwall.
When having electricity as electric rolling door in use, controlling electromagnetic clutch A15, electromagnetic clutch B17 by controller
Combination or separation just whether controllable reel A6 and reel B10 rotates, also the single rolling screen door of controllable switch or two are rolled up
Curtain door.When wanting two rolling screen door to switch together, controller is also turned on electromagnetic clutch A15, electromagnetic clutch B17 circuits, electricity
Magnet clutch A15, electromagnetic clutch B17, which are powered, to be combined, and driving disc spacing pressing A20 and driven disc A19 are by sprocket shaft A14 and reel A6 connections
Integrally, driving disc spacing pressing B22 and driven disc B21 also also link into an integrated entity sprocket shaft B16 and reel B10；Door roller drives actively
Sprocket shaft 3 is rotated, and drive sprocket axle 3 drives drive sprocket 4 to rotate, and drive sprocket 4 drives 7 turns of driven sprocket by chain A12
Dynamic, driven sprocket 7 drives sprocket shaft A14, reel A6 and sprocket wheel A8 to rotate, and sprocket wheel A8 is turned by chain B13 band movable sprockets B11
Dynamic, sprocket wheel B11 drives sprocket shaft B16 and reel B10 to rotate, and reel A6, reel B10 are with two door curtains along above and below door curtain guide rail
Two door curtains switch gate together is realized in slip；When individually switching a rolling screen door, as long as connecting electromagnetic clutch by controller
Device A15 circuits, simultaneously switch off electromagnetic clutch B17 circuits, and electromagnetic clutch A15 energizations are combined, electromagnetic clutch B17 power-off point
Would not be rotated from, reel B10 with sprocket wheel B11 and sprocket shaft B16, only driven sprocket 7 by electromagnetic clutch A15 with volume
Cylinder A6 is rotated, also with regard to only one of which door curtain switch gate.
When closing rolling screen door, door curtain constantly declines, and its hanging portion is elongated, and deadweight is also increased, while reel A6, volume
Cylinder B10 drives plane scroll spring 23 to tighten up, the increase of its elastic force, and the two is in poised state, and the transform gravitational energy of door curtain is
The elastic potential energy of plane scroll spring 23；Similarly, when opening rolling screen door, door curtain rises, and it, which is conducted oneself with dignity, reduces, now reel A6, volume
Cylinder B10 drives plane scroll spring 23 to follow diastole, and its elastic force reduces, and the two is still in poised state, plane scroll spring 23
Elastic potential energy be converted into the gravitional force of door curtain.Under the power-assisted of plane scroll spring 23, either rolling screen door is opened still
Rolling screen door is closed, as long as door roller overcomes the frictional force between transmission mechanism and door curtain and door curtain guide rail, its power can be big
Big reduction, energy saving, and also it is that in a balanced way, can improve the working environment of door roller, prolong that it, which is supported in whole work process,
Long life.
When power failure hand switch rolling screen door, electromagnetic clutch A15 and electromagnetic clutch B17 power off separation, driving disc spacing pressing
A20 and driven disc A19 separation, driving disc spacing pressing B22 and driven disc B21 are also separated, and reel A6 can freely be rotated around spool A5, reel
B10 also can freely be rotated around spool B9, equally under the power-assisted of plane scroll spring 23, and door curtain is pushed up with hand easily to be opened
Opening rolling screen door, or pull downward on door curtain with hand also can easily close rolling screen door, and hand switch rolling screen door can be in field operation.
It is described above, embodiment only of the present utility model, but protection domain of the present utility model do not limit to
In this, any change or replacement expected without creative work should all be covered within protection domain of the present utility model.
Therefore, protection domain of the present utility model should be determined by the scope of protection defined in the claims.
Claims (4)
1. a kind of double curtain birail electric dual-use manual fire resistance rolling shutter doors of energy saving, including the square on the wall of door opening side
Shape supporting plate, the mounting hole located at four corners of supporting plate, the door roller on supporting plate, the door curtain for being divided into door opening both sides
Guide rail, the door curtain that can be slided up and down along door curtain guide rail and supporting plate rotate connection and the drive chain connected with door roller output shaft
Wheel shaft, the drive sprocket being fixedly arranged on drive sprocket axle, spool A, the reel A for winding door curtain, driven sprocket, sprocket wheel A, volume
Axle B, the reel B for winding door curtain, sprocket wheel B；The drive sprocket and driven sprocket are connected by chain A, sprocket wheel A and
Sprocket wheel B is connected by chain B；It is characterized in that：Also include sprocket shaft A, energization mating type electromagnetic clutch A, sprocket shaft
B, energization mating type electromagnetic clutch B and controller；
The spool A is fixedly connected with supporting plate, and reel A is enclosed on to rotate with it outside spool A and is connected, and the sprocket shaft A is enclosed on
Rotate and be connected with it outside spool A, the driven sprocket, which is enclosed on outside sprocket shaft A, is secured to connection；The sprocket wheel A is enclosed on volume
Connection is secured to outside cylinder A；The electromagnetic clutch A is enclosed on to rotate with it outside spool A and is connected, its driven disc and reel A
End be fixedly connected, its driving disc spacing pressing is fixedly connected with sprocket shaft A one end, electromagnetic clutch A and controller electrical connection；
The spool B is fixedly connected with supporting plate, and reel B is enclosed on to rotate with it outside spool B and is connected, and the sprocket shaft B is enclosed on
Rotate and be connected with it outside spool B, the sprocket wheel B, which is enclosed on outside sprocket shaft B, is secured to connection；The electromagnetic clutch B sets
Rotate and be connected with it outside spool B, its driven disc is fixedly connected with reel B end, its driving disc spacing pressing and sprocket shaft B one end
It is fixedly connected, electromagnetic clutch B and controller electrical connection；
Plane scroll spring is equipped with the reel A and reel B, one end of the plane scroll spring and spool A, spool B are solid
Fixed connection, the other end is fixedly connected with reel A, reel B inwall.
2. a kind of double curtain birail electric dual-use manual fire resistance rolling shutter doors of energy saving according to claim 1, its feature
It is：The mounting hole is bar shaped, and laterally set.
3. a kind of double curtain birail electric dual-use manual fire resistance rolling shutter doors of energy saving according to claim 1, its feature
It is：The reel A is rotated by bearing and spool A and connected.
4. a kind of double curtain birail electric dual-use manual fire resistance rolling shutter doors of energy saving according to claim 1, its feature
It is：The reel B is rotated by bearing and spool B and connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720030046.7U CN206397417U (en) | 2017-01-11 | 2017-01-11 | A kind of double curtain birail electric dual-use manual fire resistance rolling shutter doors of energy saving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720030046.7U CN206397417U (en) | 2017-01-11 | 2017-01-11 | A kind of double curtain birail electric dual-use manual fire resistance rolling shutter doors of energy saving |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206397417U true CN206397417U (en) | 2017-08-11 |
Family
ID=59514060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720030046.7U Active CN206397417U (en) | 2017-01-11 | 2017-01-11 | A kind of double curtain birail electric dual-use manual fire resistance rolling shutter doors of energy saving |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206397417U (en) |
-
2017
- 2017-01-11 CN CN201720030046.7U patent/CN206397417U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180814 Address after: 330012 Nanchang, Jiangxi, Qingshan Lake area, Nanchang Changdong industrial zone three phase C-27 block 2 plant first floor Patentee after: NANCHANG NANFEI FIREPROOF EQUIPMENT MANUFACTURING Co.,Ltd. Address before: 363000 No. 129, Hou Shan village, Chaoyang Town, Longwen District, Zhangzhou, Fujian Patentee before: Wang Zhenfa |
|
| TR01 | Transfer of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An energy saving double curtain double rail electric manual dual purpose fireproof rolling shutter door Effective date of registration: 20201231 Granted publication date: 20170811 Pledgee: Jiangxi branch of Bank of China Ltd. Pledgor: NANCHANG NANFEI FIREPROOF EQUIPMENT MANUFACTURING Co.,Ltd. Registration number: Y2020980010447 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220823 Granted publication date: 20170811 Pledgee: Jiangxi branch of Bank of China Ltd. Pledgor: NANCHANG NANFEI FIREPROOF EQUIPMENT MANUFACTURING Co.,Ltd. Registration number: Y2020980010447 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An energy-saving and power-saving double-curtain double-track electric manual dual-purpose fire shutter door Effective date of registration: 20220909 Granted publication date: 20170811 Pledgee: Jiangxi branch of Bank of China Ltd. Pledgor: NANCHANG NANFEI FIREPROOF EQUIPMENT MANUFACTURING Co.,Ltd. Registration number: Y2022980014978 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230921 Granted publication date: 20170811 Pledgee: Jiangxi branch of Bank of China Ltd. Pledgor: NANCHANG NANFEI FIREPROOF EQUIPMENT MANUFACTURING Co.,Ltd. Registration number: Y2022980014978 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An energy-saving and energy-saving dual curtain double track electric manual dual purpose fireproof rolling shutter door Effective date of registration: 20230928 Granted publication date: 20170811 Pledgee: Jiangxi branch of Bank of China Ltd. Pledgor: NANCHANG NANFEI FIREPROOF EQUIPMENT MANUFACTURING Co.,Ltd. Registration number: Y2023980059898 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |