CN210033018U - Automatic window closing device for push-pull type fireproof window - Google Patents

Automatic window closing device for push-pull type fireproof window Download PDF

Info

Publication number
CN210033018U
CN210033018U CN201920606053.6U CN201920606053U CN210033018U CN 210033018 U CN210033018 U CN 210033018U CN 201920606053 U CN201920606053 U CN 201920606053U CN 210033018 U CN210033018 U CN 210033018U
Authority
CN
China
Prior art keywords
window
closing device
sheet
thermosensitive
supporting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201920606053.6U
Other languages
Chinese (zh)
Inventor
石金光
宋宇卿
崔兴平
苗程
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan North Construction Engineering Co Ltd
Original Assignee
Henan North Construction Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henan North Construction Engineering Co Ltd filed Critical Henan North Construction Engineering Co Ltd
Priority to CN201920606053.6U priority Critical patent/CN210033018U/en
Application granted granted Critical
Publication of CN210033018U publication Critical patent/CN210033018U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Special Wing (AREA)

Abstract

The utility model relates to an automatic window closing device for plug-type fire window, including closing window ware mechanism, hook wheel mechanism, elastic support fin, support the shell fragment, close window ware mechanism including closing window ware, first connecting rod, second connecting rod, the hook wheel mechanism pin joint of end and activity casement left side bottom is kept away from to the second connecting rod, corresponds hook wheel mechanism and is located and is provided with the elastic support fin on the window frame floorbar section bar face, and the elastic support fin bottom surface is hidden and is provided with the support shell fragment, supports the shell fragment and stretches out window frame floorbar section bar sideboard outside and temperature sensing headstock gear fixed connection. The utility model relates to a simply, reasonable novelty can be used to the start-up and the closure of plug-type fire prevention window, and the elastic support fin and the support shell fragment of special setting, the cooperation is located the hook wheel mechanism on the activity casement, and the fire prevention window is opened easily, stably, and the cooperation supports the temperature sensing start-stop mechanism that the shell fragment set up, can in time close the window after the conflagration takes place, reduces the loss of lives and property risk.

Description

Automatic window closing device for push-pull type fireproof window
Technical Field
The utility model relates to a fire window technical field, concretely relates to automatic window closing device for plug-type fire window.
Background
The urbanization of China is rapidly improved, more and more residents move into cities, city fire becomes a great dangerous situation which endangers the life safety of people increasingly along with the fact that the more and more urban floors are built, and houses where people live become the last barrier which guarantees the life safety of people when people suffer from the fire without self-rescue capacity. The fire window that prior art provided mostly adopts bridge cut-off aluminum alloy fire window, and the setting of window frame and casement divide into outward opening type, interior open type, plug-type, lift-draw formula usually, and no matter that opening and shutting mode fire window should have the self-closing function to should possess and open and close nimble, convenient operation. Automatic opening and closing devices arranged aiming at the push-pull type fire window are rare, and it is particularly necessary to design a device which is flexible in opening, simple and convenient to operate and capable of automatically closing the fire window.
Disclosure of Invention
In view of the above problem, the utility model provides an automatic window closing device for plug-type fire window realizes that fire window activity casement is daily light and handy, convenient opening and close, and the guarantee can in time realize the automatic closed function of fire window after the conflagration breaing out. Therefore, the utility model provides a following technical scheme:
an automatic window closing device for a push-pull type fireproof window comprises a window frame, a movable window sash and a fixed window sash, wherein the movable window sash and the fixed window sash are clamped in the window frame, the movable window sash is arranged adjacent to one side edge of the fixed window sash, the window frame comprises a left frame, a fixed mullion and a right frame, the automatic window closing device comprises a window closing device mechanism, a thermosensitive opening and closing mechanism, a hook wheel mechanism, an elastic supporting warping sheet and a supporting elastic sheet, the window closing device mechanism comprises a window closing device fixedly arranged on the outer side of a side plate at the lower part of the left frame, and a driving rotating shaft arranged on the side surface of the window closing device penetrates through a left window frame profile side plate and extends into a left window frame sash slide way to be hinged with a first connecting rod and; the far end of the second connecting rod is connected with a hook wheel mechanism pin fixedly arranged at the bottom of the left side of the movable window sash, an elastic supporting fin is fixedly arranged on the sliding way profile of the movable window sash of the bottom beam of the window frame corresponding to the bottom corner of the right side of the movable window sash, and a supporting elastic sheet is hidden and arranged below the elastic self-weighing fin;
the fixed mullion is fixedly provided with a thermosensitive opening and closing device at the outer side of a window frame bottom beam profile side plate, the thermosensitive opening and closing device comprises a thermosensitive device shell, a shifting piece, a constant-temperature glass bead, a second chute, a first positioning rod, a second positioning rod, a first spring and a second spring, the second chute for installing the shifting piece is arranged on a front panel of the thermosensitive device shell, and the shifting piece penetrates through the second chute and is fixedly connected with a supporting elastic piece through a screw; a first spring is connected between the right side of the shifting piece and the shell of the thermosensitive device in a butting manner, and a first positioning rod penetrates through the first spring; the track-type constant-temperature glass ball and the pushing block are fixedly connected to the left side of the shifting piece through the second positioning rod, and the second spring is sleeved on the second positioning rod and the constant-temperature glass ball and is compressed and fixed between the pushing block and the thermosensitive device shell inner side edge plate and the pushing block.
Foretell, the hook wheel mechanism including be located two fixed round pin ears of connecting block one side, and form the recess that supplies the second connecting rod to fix between two fixed round pin ears, the connecting block opposite side is provided with the hook wheel.
Foretell, the elastic support fin including the fin body, be located the protruding type nose that the anterior body of fin body designed, and fin body bottom surface distributes and has the location ear slot that supplies to support the shell fragment installation, fin body afterbody is provided with the locating hole that supplies set screw to connect.
Foretell, the support shell fragment include the shell fragment body, be located the support earrings that the shell fragment body front end curl formed, be located the preforming of shell fragment body tail end, and the preforming passes through connection piece perpendicular to shell fragment body fixed connection.
The first sliding grooves are distributed on the surface of the window frame bottom beam section corresponding to the thermosensitive opening and closing device.
The supporting elastic sheet penetrates through the first sliding groove through the connecting sheet and extends into the thermosensitive device shell to be integrally connected with the pressing sheet, and the shifting sheet penetrates through the second sliding groove and is fixedly connected with the pressing sheet located inside the thermosensitive device shell.
In the above, the left and right sides of the window closer are provided with the first positioning plates for fixed connection, and the two ends of the casing of the thermosensitive device are provided with the second positioning plates for fixed connection.
The utility model relates to a simply, reasonable novel gains following technological effect:
1. the special elastic supporting warped piece and the supporting elastic piece are matched with the hook wheel mechanism positioned on the movable window sash, so that the sliding type fireproof window can be started and closed, and the fireproof window is easy and stable to open;
2. the closing of the daily fireproof window can be simply realized by the aid of the specially arranged supporting elastic pieces;
3. the window can be closed in time after a fire disaster happens by matching the thermosensitive opening and closing mechanism with the supporting elastic sheet, so that the risk of life and property loss is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is a schematic plan view of a fire protection window according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a fire protection window A-A according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a window closer according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a hook wheel mechanism according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a hook mechanism according to an embodiment of the present invention;
fig. 6 is a schematic view of the working state of the embodiment of the present invention;
fig. 7 is a schematic structural view of a supporting spring plate according to an embodiment of the present invention;
FIG. 8 is a front side view of a thermally sensitive opening and closing device in accordance with an embodiment of the present invention;
FIG. 9 is a rear side view of a thermally sensitive opening and closing device in accordance with an embodiment of the present invention;
fig. 10 is a plan view of the internal structure of the heat-sensitive opening and closing device according to the embodiment of the present invention.
Reference numerals:
0-fireproof window, 1-left window frame, 2-window closer mechanism, 201-window closer, 202-driving rotating shaft, 203-first connecting rod, 204 second connecting rod, 205-first positioning plate, 3-fixed mullion, 4-movable window sash, 5-fixed window frame, 6-right window frame, 7-thermosensitive opening and closing mechanism, 701-thermosensitive device shell, 702-plectrum, 703-second positioning plate, 704-push block, 705-second chute, 706-first spring, 707-first positioning rod, 708-constant temperature glass bead, 709-second positioning rod, 710-second spring, 8-hook wheel mechanism, 801-fixed pin lug, 802-connecting block, 803-hook wheel, 9-bolt, 10-elastic supporting fin, 1001-warped piece, 1002-locating hole, 1003-convex warping head, 1004-locating lug groove, 11-supporting elastic sheet, 1101-supporting lug ring, 1102-elastic sheet body, 1103-pressing sheet, 1104-connecting sheet and 12-first sliding groove.
Detailed Description
In order to make those skilled in the art better understand the solution of the embodiments of the present invention, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings and the implementation manner.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", "first", "second", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in when used, and are merely used for convenience of describing the present application and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application.
In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In an embodiment, referring to fig. 1 to 10, an automatic window closing device for a sliding fire window includes a window frame 0, a movable sash 4, and a fixed sash 5, wherein the movable sash 4 and the fixed sash 5 are clamped inside the window frame 1, one side edge of the movable sash 4 is adjacent to one side edge of the fixed sash 5, and the window frame 0 includes a left side frame 1, a fixed mullion 3, and a right side frame 6; the automatic opening and closing device comprises a window closer mechanism 2, a thermosensitive opening and closing mechanism 7, a hook wheel mechanism 8, elastic supporting warps 10 and supporting elastic pieces 11, wherein the window closer mechanism 2 comprises a window closer 201 fixedly installed on the outer side of a side plate at the lower part of a left frame 1, the window closer 201 is mainly used for providing torque force for a connecting rod to promote a movable window sash 4 to realize a closing function in the prior art, a driving rotating shaft 202 arranged on the side surface of the window closer 201 penetrates through a side plate of a section bar of the left window frame 1 and extends into a window sash slideway of the left window frame to be hinged with a first connecting rod 203 and a second connecting rod 204, and when the movable window sash 4 is in a closing state, the first connecting rod 203 and the second connecting rod 204 are overlapped and hidden in a vertical state; the far end of the second connecting rod 204 is in pin connection with a hook wheel mechanism 8 fixedly arranged at the bottom of the left side of the movable window sash 4, an elastic supporting fin 10 is fixedly arranged on the sliding way profile of the movable window sash of the bottom beam of the window frame 0 corresponding to the bottom corner of the right side of the movable window sash 4, and a supporting elastic sheet 11 is hidden at the bottom surface of the elastic self-weighing fin 10;
the fixed mullion 3 is fixedly provided with a thermosensitive opening and closing device 7 at the outer side of a bottom beam profile sideboard of the window frame 0, the thermosensitive opening and closing device 7 comprises a thermosensitive device shell 701, a plectrum 702, a temperature-fixed glass bead 708, a second chute 705, a first positioning rod 707, a second positioning rod 709, a first spring 706 and a second spring 710, a second chute 705 for installing the plectrum 702 is arranged on the front panel of the thermosensitive device shell 701, and the plectrum 702 penetrates through the second chute 705 and is fixedly connected with the supporting elastic sheet 11 through a screw; a first spring 706 is abutted between the right side of the shifting piece 702 and the shell 701 of the thermosensitive device, a first positioning rod 707 penetrates through the first spring 706, the front end of the first positioning rod 707 is in non-contact connection with the supporting spring piece pressing sheet 1103, and under the condition of giving an external force to the shifting piece 7021, the supporting spring piece 11 retreats to be abutted with the first positioning rod 707, so that the supporting spring piece 11 is prevented from being completely separated from the elastic supporting warped piece 10; a runway type constant temperature glass ball 708 and a push block 704 are fixedly connected to the left side of the poking piece 702 through a second positioning rod 709, a second spring 710 is sleeved on the second positioning rod 709 and the constant temperature glass ball 708 and is compressed and fixed between an inner side plate of the shell 701 of the thermosensitive device and the push block 704, the arrangement utilizes the expansion and fragmentation of the low temperature glass ball 708 after the temperature reaches a set value, so that the elastic force of the second spring 710 is released to push the push block 704 to act on the poking piece 702, thereby pushing the supporting elastic sheet 11 to retreat, the elastic supporting warped sheet 10 lacks the supporting force of the elastic support 11, under the traction of the closer mechanism 2, the hook wheel mechanism 8 at the left side of the movable sash window 4 presses down the elastic supporting warped sheet 10, and the automatic closing of the movable sash 4 is realized through resetting.
Specifically, the hook wheel mechanism 8 includes two fixing pin ears 801 located on one side of the connecting block 802, a groove for fixing the second connecting rod 709 is formed between the two fixing pin ears 801, a hook wheel 803 is disposed on the other side of the connecting block 802, the hook wheel 803 may be a roller structure as shown in fig. 2, or may be designed as a protruding block structure fixedly connected with the connecting block 802 as shown in fig. 5, and the hook wheel mechanism is used for cooperating with the elastic supporting fin 10 to block the movable window sash 4, so as to maintain the movable window sash 4 in an open state.
Specifically, the elastically supported fin 10 includes a fin body 1001 and a convex fin 1003 integrally designed at the front end of the fin body 1001, and a positioning ear slot 1004 for mounting the supporting spring plate 11 is distributed on the bottom surface of the fin body 1001, and a positioning hole 1002 for connecting a fixing screw is arranged at the tail of the fin body 1001; the supporting spring plate 11 comprises a spring plate body 1102, a supporting earring 1101 formed by coiling the front end of the spring plate body 1102 and a pressing plate 1103 positioned at the tail end of the spring plate body 1102, the pressing plate 1103 is fixedly connected with the spring plate body 1102 through a connecting sheet 1104, a first chute 12 is distributed on the plate surface of a bottom beam profile of the window frame 0 corresponding to the thermosensitive opening and closing device 7, the supporting spring plate 11 penetrates through the first chute 12 through the connecting sheet 1104 and extends into the thermosensitive device shell 701 to be integrally connected with the pressing plate 1103, and the poking plate 1103 penetrates through a second chute 705 to be fixedly connected with the pressing plate 1103 positioned in the thermosensitive device shell 701; in operation, the supporting spring plate 11 is hidden and arranged below the elastic supporting fin 10, and the supporting spring plate 11 can move left and right, the supporting ear ring 1101 of the supporting spring plate 11 is slidably mounted in the positioning ear groove 1004 of the elastic supporting fin 10, when the supporting ear ring 1101 is positioned at the left upper end part of the positioning ear groove 1004 and clamped, a supporting force is provided for the elastic supporting fin 10 to keep the elastic supporting fin 10 in a cleaning and bouncing state, when the supporting ear ring 1101 is positioned at the right lower upper end part of the positioning ear groove 1004 and clamped, the supporting force for the elastic supporting fin 10 is reduced, the elastic supporting fin 10 retracts under the compression of the hook wheel mechanism 8, the hook wheel mechanism 8 cannot be blocked, and therefore the movable window sash 4 is enabled to be reset and closed under the action of the window closer mechanism 2.
Specifically, the left and right sides of the window closer 201 are provided with a first positioning plate 205 for fixed connection, and the two ends of the casing 701 of the thermosensitive device are provided with a second positioning plate 703 for fixed connection.
The working principle is as follows:
when the window is in normal operation, the movable window sash 4 is pushed to move rightwards, the hook wheel mechanism 8 moves rightwards along with the movable window sash and presses the elastic supporting warped piece 10, and the hook wheel mechanism is blocked due to the comprehensive action of the elastic supporting warped piece 10 and the supporting elastic sheet 11, so that the open state of the movable window sash is maintained; when the movable window needs to be closed, the poking sheet 702 is poked, so that the supporting elastic sheet 11 moves to the right, the acting force on the elastic supporting warped sheet 10 is reduced, the elastic supporting warped sheet 10 is not enough to block the hook wheel mechanism 8, and the movable window sash 4 is closed under the action of the window closer mechanism 2; when a fire disaster occurs when the fire window is in an open state, the low-temperature glass bead 708 expands and cracks after the temperature reaches a set value, so that the second spring 710 is released to push the push block 704 to act on the pull sheet 702, the support elastic sheet 11 is pushed to retreat, the elastic support fin 10 lacks the supporting force of the elastic support 11, the hook wheel mechanism 8 at the left bottom corner of the movable sash window 4 presses down the elastic support fin 10 under the traction of the closer mechanism 2, and the automatic closing of the movable sash window 4 is realized through resetting.
While the preferred embodiments of the present invention have been described in the foregoing illustrative manner, it will be understood by those skilled in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention.

Claims (7)

1. The utility model provides an automatic window closing device for plug-type fire window, fire window includes window frame, activity casement, fixed casement, and activity casement and fixed casement joint are inside the window frame, and the setting is adjoined to with fixed casement side to activity casement, the window frame include left frame, fixed muntin, right frame, its characterized in that: the automatic window closing device comprises a window closing device mechanism, a thermosensitive opening and closing mechanism, a hook wheel mechanism, an elastic supporting warped sheet and a supporting elastic sheet, wherein the window closing device mechanism comprises a window closing device fixedly arranged on the outer side of a side plate at the lower part of a left frame, and a driving rotating shaft arranged on the side surface of the window closing device penetrates through a left window frame profile side plate and extends into a left window frame sash slide way to be hinged with a first connecting rod and a second connecting rod; the far end of the second connecting rod is connected with a hook wheel mechanism pin fixedly arranged at the bottom of the left side of the movable window sash, an elastic supporting fin is fixedly arranged on the sliding way profile of the movable window sash of the bottom beam of the window frame corresponding to the bottom corner of the right side of the movable window sash, and a supporting elastic sheet is hidden and arranged below the elastic self-weighing fin;
a thermosensitive opening and closing device is fixedly installed on the outer side of the window frame bottom beam profile side plate corresponding to the fixed mullion, the thermosensitive opening and closing device comprises a thermosensitive device shell, a shifting piece, a constant-temperature glass bead, a second chute, a first positioning rod, a second positioning rod, a first spring and a second spring, the second chute for installing the shifting piece is formed in the front panel of the thermosensitive device shell, and the shifting piece penetrates through the second chute and is fixedly connected with a supporting elastic piece through a screw; a first spring is connected between the right side of the shifting piece and the shell of the thermosensitive device in a butting manner, and a first positioning rod penetrates through the first spring; the track-type constant-temperature glass ball and the pushing block are fixedly connected to the left side of the shifting piece through the second positioning rod, and the second spring is sleeved on the second positioning rod and the constant-temperature glass ball and is compressed and fixed between the pushing block and the thermosensitive device shell inner side edge plate and the pushing block.
2. An automatic window closing device for a push-pull fire window according to claim 1, wherein: the hook wheel mechanism comprises two fixing pin lugs positioned on one side of the connecting block, a groove for fixing the second connecting rod is formed between the two fixing pin lugs, and a hook wheel is arranged on the other side of the connecting block.
3. An automatic window closing device for a push-pull fire window according to claim 1, wherein: the elastic support fin include the fin body, be located the protruding type nose of the anterior integrative design of fin body, and fin body bottom surface distributes and has the location ear groove that supplies to support the shell fragment installation, fin body afterbody is provided with the locating hole that supplies set screw to connect.
4. An automatic window closing device for a push-pull fire window according to claim 1, wherein: the supporting elastic sheet comprises a sheet body, a supporting ear ring which is arranged at the front end of the sheet body and is formed by curling, and a pressing sheet which is arranged at the tail end of the sheet body, wherein the pressing sheet is fixedly connected with the sheet body through a connecting sheet vertical to the sheet body.
5. An automatic window closing device for a push-pull fire window according to claim 1, wherein: first sliding chutes are distributed on the surface of the window frame bottom beam section bar corresponding to the thermosensitive opening and closing device.
6. An automatic window closing device for a push-pull fire window according to claim 1, wherein: the supporting elastic sheet penetrates through the first sliding groove through the connecting sheet and extends into the thermosensitive device shell to be integrally connected with the pressing sheet, and the shifting sheet penetrates through the second sliding groove and is fixedly connected with the pressing sheet located inside the thermosensitive device shell.
7. An automatic window closing device for a push-pull fire window according to claim 1, wherein: the left side and the right side of the window closer are provided with first positioning plates for fixed connection, and the two ends of the shell of the thermosensitive device are provided with second positioning plates for fixed connection.
CN201920606053.6U 2019-04-29 2019-04-29 Automatic window closing device for push-pull type fireproof window Expired - Fee Related CN210033018U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920606053.6U CN210033018U (en) 2019-04-29 2019-04-29 Automatic window closing device for push-pull type fireproof window

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920606053.6U CN210033018U (en) 2019-04-29 2019-04-29 Automatic window closing device for push-pull type fireproof window

Publications (1)

Publication Number Publication Date
CN210033018U true CN210033018U (en) 2020-02-07

Family

ID=69362767

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920606053.6U Expired - Fee Related CN210033018U (en) 2019-04-29 2019-04-29 Automatic window closing device for push-pull type fireproof window

Country Status (1)

Country Link
CN (1) CN210033018U (en)

Similar Documents

Publication Publication Date Title
AU738182B2 (en) Improvements in or relating to hinges
CN210033018U (en) Automatic window closing device for push-pull type fireproof window
CN106256984A (en) A kind of self closing device for fire window
CN104727630A (en) Locking device, and window and door
CN204963376U (en) Horizontal refrigerator
CN201416336Y (en) Slide track-type rocker arm
CN202831928U (en) Five link mechanism slide support hinge
CN112065194A (en) Automatic fireproof window
CN217246449U (en) Fire-resistant fire hydrant case of flat-open type
CN210768483U (en) Forced return-to-zero fire window
CN210768302U (en) Temperature control locking device for door and window
CN209724107U (en) A kind of tamper-resistant safety door and window
CN102877724A (en) Sliding support hinge with five-connecting-rod structure
US2954578A (en) Hinges
CN214997123U (en) Durable building energy-saving window
CN220036440U (en) Window closing device
CN205445413U (en) Seal assembly and use this seal assembly's dead weight formula to prevent fire door
CN218991281U (en) Digging-free fireproof window closer
CN217269579U (en) Temperature control fireproof window closer
CN216553492U (en) Temperature control window closer
CN217269580U (en) Temperature control window closer for closing window
CN211573077U (en) Window sash opening and closing control device
CN213391680U (en) Fireproof door and window closing device
WO2007015077A1 (en) Panic latch assembly
CN221194672U (en) Lower hinge of inwardly opened and inwardly inverted window

Legal Events

Date Code Title Description
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: 20200207