CN202100120U - Energy conservation frame hidden type curtain wall used on curtain wall and energy conservation window - Google Patents

Energy conservation frame hidden type curtain wall used on curtain wall and energy conservation window Download PDF

Info

Publication number
CN202100120U
CN202100120U CN201120163851XU CN201120163851U CN202100120U CN 202100120 U CN202100120 U CN 202100120U CN 201120163851X U CN201120163851X U CN 201120163851XU CN 201120163851 U CN201120163851 U CN 201120163851U CN 202100120 U CN202100120 U CN 202100120U
Authority
CN
China
Prior art keywords
window
frame
sash
curtain wall
indoor
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
CN201120163851XU
Other languages
Chinese (zh)
Inventor
方远平
闵有君
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.)
Shenzhen Baohang Construction Group Co., Ltd.
Original Assignee
SHENZHEN BAOHANG BUILDING 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 SHENZHEN BAOHANG BUILDING ENGINEERING CO LTD filed Critical SHENZHEN BAOHANG BUILDING ENGINEERING CO LTD
Priority to CN201120163851XU priority Critical patent/CN202100120U/en
Application granted granted Critical
Publication of CN202100120U publication Critical patent/CN202100120U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Load-Bearing And Curtain Walls (AREA)

Abstract

The utility model discloses an energy conservation frame hidden type curtain wall used on a curtain wall and an energy conservation window, first wood sections which are used for covering a window frame and a sash frame and are positioned on a main viewing surface of the inner side of a room are arranged on the window frame and/or the sash frame, the main viewing surfaces of the window frame and the window sash viewed in the room by users are wood main viewing surfaces, therefore, the first wood sections arranged in the room can play a role of heat preservation and can keep consistent with the decoration in the room, the natural wood grain texture and particular comfortable smelling of a solid wood is merged with the natural decorative style in the room, thereby being comfortable and natural; exposed sections hardly exist on the surface of the outer part of the window, the appearance of the window is enhanced, the windows are not opened easily from the outer part by outdoor people, and the theft-proof safety is enhanced. Moreover, the integrity of the window sash of the energy conservation window is good, the energy conservation window is suitable for installing large area glass, the appearance can reach the effect of the curtain wall, therefore, the energy conservation window can be well merged with various curtain walls.

Description

Be used for energy saving window and energy-conservation concealed frame type curtain wall on the curtain wall
Technical field
The utility model relates to building field, is specifically related to a kind of energy saving window and energy-conservation concealed frame type curtain wall that is used on the curtain wall.
Background technology
Window on the modern architecture not only requires to have good thermal insulation, performances such as ventilation daylighting and sound insulation, waterproof, and more and more users is had higher requirement to the attractive in appearance and window and the whole building appearance of window.Traditional window is that fixing glass forms sash in wooden frame or the aluminum alloy frame mostly; Then be fixed on body of wall on window frame cooperate, the glass of each sash of this window is less, is unfavorable for daylighting, ventilation; The framework lines that expose also seem many and mix; The overall appearance of influence building is particularly being used on the increasingly extensive curtain wall, and the installation of the bright frame window of this type, demolition and maintenance all bother.
Because the curtain wall of concealed frame type has advantages such as air leakage performance preferably and rain penetration performance and overall appearance facade property are strong; Its application is also increasingly extensive; And traditional bright frame type window is when being installed on the concealed frame type curtain wall; Will certainly influence the complete latent facade effect of whole building, not meet the requirement of modern architecture.
Though the concealed frame type window is also used on curtain wall to some extent now, its structure is generally complicated, and installation, maintenance are all inconvenient, and use cost is higher.Existing in addition concealed frame type window generally all is an aluminum window, and it is big that it produces energy consumption, general for the energy consumption of producing equal pure timber window four to octuple, do not meet the requirement of energy-saving and environmental protection.And because the aluminium alloy extrusions heat transfer property is better, make the temperature of indoor and outdoor mutual faster, cause its heat insulation effect undesirable.Simultaneously, the window of aluminium alloy extrusions is exposed to the matter creeping chill that indoor aluminium alloy extrusions often brings user's metal, also is prone to and indoor not harmony of decoration, influence indoor attractive in appearance, reduction user's experience.
The utility model content
The technical problem underlying that the utility model will solve is, a kind of attractive in appearance, energy-conservation, insulation is provided and can well incorporates the concealed frame type window of various bodies of wall.
For solving the problems of the technologies described above; The utility model provides a kind of energy saving window that is used on the curtain wall; Comprise fixing window frame and the sash that matches with said window frame, side, said sash indoor is provided with the fan frame, and said sash is when closure state; Said fan frame and said window frame closely cooperate, and said window frame is or/and the fan frame is provided with is used for said window frame and fan frame are positioned at first wood section that the main-vision surface of indoor hides fully.
In a kind of embodiment of the utility model, said first wood section is arranged on the said window frame, and said first wood section is positioned at the indoor said window frame and the main-vision surface that the fan frame is positioned at the indoor are hidden fully.
In a kind of embodiment of the utility model, said first wood section is the L type.
In a kind of embodiment of the utility model, the indoor visual side of said fan frame is provided with second wood section, and the said second wood section visual side that said fan frame is indoor hides fully.
In a kind of embodiment of the utility model, said sash is the multiple glazing sash, the notch cuttype setting that each joint face that said fan frame outside is connected with the corresponding glassy layer of said sash respectively is.
In a kind of embodiment of the utility model, said sash is double layer glass sash or three layers of hollow glass sash.
In a kind of embodiment of the utility model, be provided with interior sealing mechanism between the fitting face of said fan frame and said window frame indoor, be provided with external seal mechanism between the fitting face of said window frame and said fan frame outside.
This is novel also to provide a kind of energy-conservation concealed frame type curtain wall, it is characterized in that said curtain wall comprises aforesaid energy saving window.
In a kind of embodiment of the utility model, the vertical beam of said curtain wall is or/and crossbeam is a wood section.
In a kind of embodiment of the utility model; Said vertical beam is provided with fixture with the face that the glassy phase of said curtain wall cooperates; Form one between said fixture and the said vertical beam and press groove; Said glass is fixedly connected with said vertical beam through the connector that is shaped as コ, and said connector is arranged in an indoor end and is fixed on the said groove that presses, and said connector is positioned at an outdoor end and is fixedly connected with said glass.
The beneficial effect of the utility model:
The fan frame of this novel energy saving window that provides is fixed on the side of sash indoor; Therefore the section bar that almost do not expose of portion surface has outside window strengthened the attractive in appearance of window, and because the window frame that window does not expose; Therefore outdoor personnel are difficult for window having strengthened the safety of antitheft from external opening;
The window frame of this novel energy saving window that provides is used to hide first wood section that window frame and fan frame are positioned at the main-vision surface of indoor or/and the fan frame is provided with; The main-vision surface of user in indoor window frame of seeing and sash position is wooden main-vision surface; Therefore when being positioned at the first indoor wood section and playing insulation effect; Also can be consistent with indoor decoration, wood grain texture and exclusive warm breath that solid wood is natural incorporate in the indoor natural decorated style, and warm, nature seems;
Because this novel energy saving window that provides is not exposed to outdoor section bar basically; The good integrity of sash; Be specially adapted to install large-area glass; Outward appearance almost can reach the effect of similar curtain wall, therefore can well be blended in curtain wall, is particularly useful for the stronger concealed frame type curtain wall of overall appearance facade sense;
This energy saving window in novel is main with aluminium extruded sections, has the high-intensity characteristics of aluminium alloy extrusions, and the energy consumption of the door and window of purer plastic-steel, disconnected hot aluminium alloy extrusions is low, is beneficial to energy-saving and environmental protection; The use cost and the maintenance cost of purer timber window are low, more are prone to satisfy consumers in general's demand.
Description of drawings
Fig. 1 is applied to energy saving window on the curtain wall cross-sectional view when closed for a kind of embodiment's of the utility model;
Fig. 2 is the enlarged drawing of Fig. 1 middle fan frame;
Fig. 3 is the enlarged drawing of window frame among Fig. 1;
Fig. 4 is the sketch map that is connected of window frame and first wooden profile material among Fig. 1.
The specific embodiment
Combine accompanying drawing that the utility model is done further explain through the specific embodiment below.
Embodiment one:
Energy saving window in this example comprises window frame and sash, wherein on side, sash indoor, is provided with the fan frame, and sash is when closure state, and fan frame and window frame closely cooperate.Window frame in this example all is a shape with the fan frame, as can all being aluminium alloy extrusions.On window frame and/or fan frame, also be provided with first wood section in this example, be used for window frame and the indoor main-vision surface of fan frame are hidden fully; Window frame is subscriber station window frame of seeing in the window dead ahead and a main-vision surface of fanning frame with the indoor main-vision surface of fan frame in this example.Wherein, the concrete setting of first wood section can be selected according to actual conditions, for example, when the width of the fitting face of fan frame and window frame during greater than the width of window frame, can, at window frame with fan on the indoor main-vision surface of frame first wood section is set respectively.The width of the fan frame in this example and the fitting face of window frame is less than window frame, and the main-vision surface that the fan frame is positioned at the indoor is blocked by window frame fully, so first wood section in this example is arranged on the window frame, the shape of the main-vision surface of window frame indoor hidden fully get final product.
In order to prevent to see from the side the shape of fan frame and window frame, the first wooden wood section in this example can be the L type, and the face main-vision surface that window frame is indoor of the wooden profile material of L type hides fully, and another face hides the visual side of window frame with the fan frame fully.When the visual side of window frame and sash is the sash closure in this example, in other sides except that main-vision surface of the indoor window frame that can directly see and sash.Certainly, first wood section in this example also can only hide the visual side of window frame, and the visual side of fan frame then can be hidden by second wood section that is arranged on the fan frame fully, and when sash was closed, second wood section matched with first wood section.Perhaps first wood section can be " one " font; Only hide the main-vision surface of window frame; And second wood section is " one " font too, and second wood section also extends out the visual side that covers in window frame except the visual side that hides the fan frame; Make window frame be exposed to indoor shape and all hidden, window can better be combined together with indoor decoration by wood section with the fan frame.
Sash in this example is the multiple glazing sash; Be provided with interior sealing mechanism between the fitting face of fan frame and window frame indoor, be provided with external seal mechanism between the fitting face of fan frame and window frame outside, the sealing mechanism in this example can be that weather strip cooperates formation with corresponding sealing surface; Inner and outer sealing mechanism in this example has guaranteed the tightness and the watertightness of window; And sash is owing to be hollow glass, and its heat-insulating property will be got well than single-glass, has further guaranteed the heat-insulating property of window.
Each joint face notch cuttype setting that each glassy layer of fan frame and sash in this example is connected; For example; When sash is double layer glass, then to fan the frame outside and can be provided with two stair-stepping joint faces, one deck than the outside of one deck of double layer glass indoor will be lacked; Sash is connected respectively with the joint face of two notch cuttypes of fan frame, and wherein connected mode can be bonding.Accordingly; When sash was three layers of hollow glass, the outside of fan frame can be provided with the joint face of three continuous notch cuttypes, is connected to the glassy layer of three notch cuttypes of outside direction with the indoor of sash respectively; Also can be set to the joint face of two notch cuttypes; Be connected with the glassy layer of the indoor of sash and the glassy layer of outside respectively, especially when the intermediate layer of three layers of hollow glass is not glassy layer, also can adopt above-mentioned connected mode.
Because the fan frame of the window in this example is arranged on the indoor of sash; The globality of sash is very good, is specially adapted to install large-area glass, and air permeability and daylighting property are preferably arranged; Outward appearance almost can reach the effect of curtain wall, therefore can well be blended in various curtain walls.To be example novelly do further explanation to this to be applied on the concealed frame type curtain wall below.
Embodiment two:
Curtain wall in this example is the concealed frame type curtain wall, and crossbeam and vertical beam all are wood sections.Certainly, the vertical beam of curtain wall and crossbeam also can all be aluminium alloy extrusions or have only crossbeam or vertical beam is a wood section in this example.But for heat insulation, the heat-insulating property of considering curtain wall with and the aesthetic property decorated, crossbeam in this example and vertical beam all are wood sections.And the energy consumption of wood section is more much lower than the energy consumption of aluminium alloy extrusions, helps energy-saving and environmental protection.
See also Fig. 1-4, the left side of vertical beam 1 is the structure of the concealed frame type window in this example, and the right side is the syndeton of vertical beam 6 with the glass 7 of curtain wall of curtain wall in this example.Wherein, Window frame 2 is provided with first wood section 1; First wood section 1 is fixedly connected with the right side of vertical beam 6; Window frame 2 is for having the notch cuttype shape of two continuous cascaded surfaces, and the cascaded surface 23 that wherein is arranged in indoor (direction shown in Fig. 1 arrow is the indoor) is connected the outside of first wood section 1 through the mode of clamping, and the vertical connector 25 between the cascaded surface 24 of cascaded surface 23 and outside and the left surface of vertical beam 6 fit tightly; Also be provided with spacing card 251 on the face that vertically connector 25 and vertical beam 6 are fitted, spacing card 251 closely cooperates to limit the applying position of vertical connector 25 and vertical beam 6 with the end face of vertical beam 6 outsides.Cascaded surface 23 is provided with buckling groove 22; The face of corresponding first wood section 1 outside is provided with the clamping platform 12 that cooperates with buckling groove 22; On first wood section 1, the end that buckling groove 22 matches with clamping platform 12 is provided with the convexity of two horizontal symmetrical to clamping platform 12 through screw, and the both sides of clamping platform 12 are provided with the groove that matches with buckling groove 22; During cooperation; Buckling groove 22 is interlocked with an end of clamping platform 12, then along the bearing of trend sliding window frame 2 of first wood section 1, makes it pass through first wood section 1 and is fixedly connected with vertical beam 6.
See that from the indoor to the outside direction first wood section 1 covers window frame 2 fully, make the user can't see shape, bring the user wooden natural, warm sensation, improve user's experience from the front (main-vision surface of window frame 2) of first wood section 1.
More near the outside, wherein joint face 31 is positioned at the side of outside for the rectangle die cavity on the fan frame 3 than joint face 31 for the joint face 31 and 32 that the outside of fan frame 3 has two successive steps types, joint face 32.Sash 5 in this example is a double layer glass; It is shorter than the glassy layer that is positioned at the outside 52 wherein to be positioned at indoor glassy layer 51; During connection, glassy layer 51 can be bonding through double faced adhesive tape with joint face 31, and glassy layer 52 can be bonding through double faced adhesive tape and structure glue with joint face 32; Glassy layer 52 extends certain distance to the right makes it hide cascaded surface 24 fully, to arrive the effect of latent fully frame.Therefore each glassy layer of the sash in this example all can be bonding with the fan frame, and each glassy layer that makes sash is stressed more even when fanning frame and be connected, and connects more reliable.
The indoor of joint face 32 is provided with the slot 321 that weather strip is installed in this example, and the weather strip that is fixed in the slot 32 cooperates with the side seal of cascaded surface 24 outsides.The side of the rectangle die cavity indoor of fan on the frame 3 then with side, cascaded surface 23 outside on the weather strip that is provided be sealed and matched.Be in this example window frame and fan frame between be provided with inside and outside two-layer being sealed and matched, with tightness, watertightness and the performance heat insulation, insulation that guarantees window.
In this example; In order to prevent that visual side (this example for the left surface) direction from vertical beam 6 from seeing window frame 2 and fan frame 3 shapes, also be provided with wooden seal convexity 11 away from an end of vertical beam 6 at first wood section 1, be provided with second wood section 4 at fan frame 3 away from a side of vertical beam 6 accordingly; The sash closed type; Second wood section 4 cooperates with envelope protruding 11 left surface of window frame 2 with fan frame 3 is hidden fully, can only see wooden window frame and fan frame from indoor, gives people's allusion, graceful experience.Second wood section 4 in this example is identical with the connected mode of window frame 2 with first wood section 1 with fan frame 3 connected modes.
Vertical beam 6 in this example is connected with connector 9 through fixture 8 with the glass 7 of curtain wall; Connector 9 be shaped as コ; One end of fixture 8 indoors has two convexities, and during cooperation, two convexities stick into draw-in groove 61 the insides that are provided with on the vertical beam 6 and pass through screw and are fixedly connected with vertical beam 6; Fixture 8 other ends do not embed to form between the end face of part and vertical beam 6 of draw-in groove 61 and press groove 10; The end that connector 9 is arranged in the indoor is fixed in and presses groove 10, and the other end is connected with the glass 7 of curtain wall with structure glue through double faced adhesive tape, thereby the glass 7 of curtain wall is fixedly connected with vertical beam 6.
Seal through weather-resistant glue and corresponding filler (like sealing joint strip) between the end face of the glass 7 of cascaded surface 24 and curtain wall in this example, prevent that the rainwater of outside from directly contacting with vertical beam 6 its corrosion, shorten the application life of its curtain wall.
Window frame 2 in this example can be an aluminium alloy extrusions all with fan frame 3, and first wood section 1 in this example and second wood section 4 can all be solid wood profile or integrated wood section.Concealed frame type curtain wall in this example is the solid wood curtain wall, and is low with respect to the energy consumption of the curtain wall of aluminium alloy extrusions, more energy-conserving and environment-protective.Concealed frame type window in this example simple in structure installed, easy to maintenance, and use cost is low.And the concealed frame type window in this example is not exposed to outdoor section bar; The good integrity of sash; Can be consistent with the sense of concealed frame type curtain wall overall appearance facade when being installed on the concealed frame type curtain wall; And the shape that expose the indoor can well incorporate indoor decorated style through the packing of wood section, has further improved user's experience.
Above content is the further explain that combines concrete embodiment that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the those of ordinary skill of technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection domain of the utility model.

Claims (10)

1. energy saving window that is used on the curtain wall; Comprise fixing window frame and the sash that matches with said window frame; Side, said sash indoor is provided with the fan frame, and said sash is when closure state, and said fan frame and said window frame closely cooperate; It is characterized in that said window frame is or/and the fan frame is provided with is used for said window frame and fan frame are positioned at first wood section that the main-vision surface of indoor hides fully.
2. energy saving window as claimed in claim 1 is characterized in that, said first wood section is arranged on the said window frame, and said first wood section is positioned at the indoor said window frame and the main-vision surface that the fan frame is positioned at the indoor are hidden fully.
3. energy saving window as claimed in claim 2 is characterized in that, said first wood section is the L type.
4. like each described energy saving window of claim 1-3, it is characterized in that the indoor visual side of said fan frame is provided with second wood section, the said second wood section visual side that said fan frame is indoor hides fully.
5. energy saving window as claimed in claim 4 is characterized in that, said sash is the multiple glazing sash, the notch cuttype setting that each joint face that said fan frame outside is connected with the corresponding glassy layer of said sash respectively is.
6. energy saving window as claimed in claim 5 is characterized in that, said sash is double layer glass sash or three layers of hollow glass sash.
7. energy saving window as claimed in claim 6 is characterized in that, is provided with interior sealing mechanism between the fitting face of said fan frame and said window frame indoor, is provided with external seal mechanism between the fitting face of said window frame and said fan frame outside.
8. an energy-conservation concealed frame type curtain wall is characterized in that, said curtain wall comprises each described energy saving window like claim 1-7.
9. curtain wall as claimed in claim 8 is characterized in that, the vertical beam of said curtain wall is or/and crossbeam is a wood section.
10. like claim 8 or 9 described curtain walls; It is characterized in that; Said vertical beam is provided with fixture with the face that the glassy phase of said curtain wall cooperates, and forms one between said fixture and the said vertical beam and presses groove, and said glass is fixedly connected with said vertical beam through the connector that is shaped as コ; Said connector is arranged in an indoor end and is fixed on the said groove that presses, and said connector is positioned at an outdoor end and is fixedly connected with said glass.
CN201120163851XU 2011-05-20 2011-05-20 Energy conservation frame hidden type curtain wall used on curtain wall and energy conservation window Expired - Fee Related CN202100120U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201120163851XU CN202100120U (en) 2011-05-20 2011-05-20 Energy conservation frame hidden type curtain wall used on curtain wall and energy conservation window

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201120163851XU CN202100120U (en) 2011-05-20 2011-05-20 Energy conservation frame hidden type curtain wall used on curtain wall and energy conservation window

Publications (1)

Publication Number Publication Date
CN202100120U true CN202100120U (en) 2012-01-04

Family

ID=45386137

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201120163851XU Expired - Fee Related CN202100120U (en) 2011-05-20 2011-05-20 Energy conservation frame hidden type curtain wall used on curtain wall and energy conservation window

Country Status (1)

Country Link
CN (1) CN202100120U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113202380A (en) * 2021-06-10 2021-08-03 帷森(厦门)建材工业有限公司 Semi-hidden frame window

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113202380A (en) * 2021-06-10 2021-08-03 帷森(厦门)建材工业有限公司 Semi-hidden frame window

Similar Documents

Publication Publication Date Title
CN201786225U (en) Energy-saving window used for building and provided with external sunshade roller shutter
CN203412475U (en) Double-wood aluminum door
CN201495924U (en) Aluminum-wood compound environment-friendly and energy-saving doors and windows
CN202324991U (en) Bridge-cutoff type aluminium-plastic wood composite energy-saving and heat-insulating window
CN202100120U (en) Energy conservation frame hidden type curtain wall used on curtain wall and energy conservation window
CN201513074U (en) Aluminum-wood composite inward-opening energy-saving door or window
CN201495918U (en) Aluminum-clad wood environment-friendly and energy-saving doors and windows
CN204200002U (en) Waterproof and heat-insulating window
CN204200023U (en) Waterproof and heat-insulating window
CN204199977U (en) Waterproof and heat-insulating outward opening window
CN204199975U (en) Waterproof and heat-insulating outward opening window
CN202055691U (en) Sealed aluminum alloy side hung window
CN209556753U (en) Passive type fire resisting composite material Energy Saving Windows
CN202227894U (en) Heat-insulation horizontal-drawing sliding door and window
CN207122235U (en) Aluminium alloy window edge frame fixed connection structure
CN203925145U (en) A kind of antifreeze bridge-cut aluminum section bar glass door
CN201908548U (en) Double-bridge cutoff energy-saving heat preservation and insulation window
CN204677087U (en) A kind of aluminium veneer external-open band Buddha's warrior attendant net integrated window
CN203430284U (en) Aluminum-wrapped wooden window
CN205477151U (en) Systematic casement window
CN204200003U (en) Waterproof and heat-insulating window
CN103835622B (en) Aluminium wood compound door and window modelled after an antique
CN203462913U (en) Double-wood aluminum window
CN202100159U (en) Energy-saving window used on curtain wall and energy-saving environment-friendly exposed-frame curtain wall
CN102220824B (en) Sealing aluminum alloy casement window

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: SHENZHEN BAOHANG BUILDING GROUP CO., LTD.

Free format text: FORMER NAME: SHENZHEN BAOHANG BUILDING ENGINEERING CO., LTD.

CP01 Change in the name or title of a patent holder

Address after: 518126, Shenzhen, Guangdong province Baoan District West township crane Chau intersection No. 3, hall 41, 2 floor

Patentee after: Shenzhen Baohang Construction Group Co., Ltd.

Address before: 518126, Shenzhen, Guangdong province Baoan District West township crane Chau intersection No. 3, hall 41, 2 floor

Patentee before: Shenzhen Baohang Building Engineering Co.,Ltd.

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: 20120104

Termination date: 20160520