CN106593250B - Household soundproof door - Google Patents
Household soundproof door Download PDFInfo
- Publication number
- CN106593250B CN106593250B CN201610990657.6A CN201610990657A CN106593250B CN 106593250 B CN106593250 B CN 106593250B CN 201610990657 A CN201610990657 A CN 201610990657A CN 106593250 B CN106593250 B CN 106593250B
- Authority
- CN
- China
- Prior art keywords
- door
- plate
- soundproof
- bridge
- turnover panel
- 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.)
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- 239000012530 fluid Substances 0.000 claims abstract description 27
- 230000008719 thickening Effects 0.000 claims abstract description 26
- 239000003365 glass fiber Substances 0.000 claims abstract description 18
- 239000011229 interlayer Substances 0.000 claims abstract description 18
- 230000007306 turnover Effects 0.000 claims description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 239000002202 Polyethylene glycol Substances 0.000 claims description 4
- 229920001223 polyethylene glycol Polymers 0.000 claims description 4
- 229920000151 polyglycol Polymers 0.000 claims description 3
- 239000010695 polyglycol Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 239000000835 fiber Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 241000272173 Calidris Species 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- 229910003978 SiClx Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/20—Doors, windows, or like closures for special purposes; Border constructions therefor for insulation against noise
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/70—Door leaves
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/70—Door leaves
- E06B3/7001—Coverings therefor; Door leaves imitating traditional raised panel doors, e.g. engraved or embossed surfaces, with trim strips applied to the surfaces
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/16—Sealing arrangements on wings or parts co-operating with the wings
- E06B7/18—Sealing arrangements on wings or parts co-operating with the wings by means of movable edgings, e.g. draught sealings additionally used for bolting, e.g. by spring force or with operating lever
- E06B7/20—Sealing arrangements on wings or parts co-operating with the wings by means of movable edgings, e.g. draught sealings additionally used for bolting, e.g. by spring force or with operating lever automatically withdrawn when the wing is opened, e.g. by means of magnetic attraction, a pin or an inclined surface, especially for sills
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Special Wing (AREA)
- Securing Of Glass Panes Or The Like (AREA)
Abstract
The invention relates to the field of doors and windows, in particular to a household soundproof door, which comprises: the door plate is a bridge opening mechanical plate, a plurality of bridge openings vertically penetrating through the whole door plate are formed in the door plate, and the bridge openings are parallel to each other; the door frame is a rectangular frame without a bottom edge, a hinge and a first conical gear are arranged on the side edge of the door frame, the first conical gear is fixed with the side edge of the door frame, the door frame is connected with the door panel through the hinge, a turning plate is arranged on the door panel and positioned at the bottom of the door panel, the turning plate is hinged with the door panel, a second conical gear is arranged at the end part of the turning plate, and the second conical gear is meshed with the first conical gear; the bridge comprises a plurality of interlayers, each interlayer is arranged in each bridge opening and divides each bridge opening into a plurality of independent cavities, glass fibers are filled in the independent cavities, a water storage tank is dug in the upper surface of each interlayer, and shear thickening fluid is filled in the water storage tank. The invention provides a household soundproof door aiming at the technical problem that the soundproof effect of the existing soundproof door is poor.
Description
Technical field
The present invention relates to door and window fields, more particularly to a kind of family expenses soundproof door.
Background technology
It is in we of forest of skyscrapers, it is always desirable to possess indifferent to fame or gain quiet, the full room of " a winding path leads to quiet seclusion locates, and meditation abode flowers and trees are deep "
Sound insulation processing can reserve a piece of pure land among downtown area for you.But door is like the notch on fort, if door
Sound insulation processing it is not in place, the soundproof effect in whole room can be seriously affected, present people do not stint a flower huge sum of money and choose sound insulation effect
The excellent soundproof door of fruit.
Existing soundproof door, is typically filled with the materials such as acoustical cotton or PU, special using the sound-absorbing of material in itself
Property reaches soundproof effect.Such door has larger difference, can reach 29-38 according to the difference of the material of filling, soundproof effect
The soundproof effect of decibel.Also have plenty of and so-called honeycomb structure is divided into using cardboard, on the one hand increase the intensity of door-plate, the opposing party
The closed air layer that face is formed with it makees the sound insulation of a certain degree.Such door can reach 29 decibels of soundproof effect.But
Business district, especially on highway side, more decibels of noises of 80-90, are far from being enough by these simple soundproof doors.Soundproof door
Development be also far from being at the end.
The thickness of density of the effect of sound insulation also with door-plate, weight and door-plate is related, density height, heavy, door
The door soundproof effect of thickness of slab is better.But just imagine, during finishing, if making door-plate with the steel plate of 4cm thickness or being filled in door-plate
Cement lifts soundproof effect, then estimation soundproof effect is to reach, and hinge and the hinge estimation of door also can't bear the heavy load, very
It is required for friendship individual to come to take handle to each enabling shutdown to push and pull together.Therefore, best soundproof door can possess preferably
Soundproof effect, weight is also lighter.
It is badly in need of a kind of excellent family expenses soundproof door of soundproof effect now.
The content of the invention
The present invention is for the bad technical problem of existing soundproof door soundproof effect, there is provided a kind of family expenses soundproof door.
Family expenses soundproof door in this programme, including:
Door-plate, door-plate are bridge mechanical plate, there are multiple bridge openings for running through whole door-plate vertically in door-plate, phases between bridge opening
It is mutually parallel;
Doorframe, doorframe are the rectangle frame on no base, and the side of doorframe is equipped with hinge and the first angular wheel, the first taper
The side of gear and doorframe is fixed, and by hinge connection between doorframe and door-plate, door-plate is equipped with turnover panel, and turnover panel is located at door-plate
Bottom, turnover panel are hinged with door-plate, and the end of turnover panel is equipped with the second angular wheel, and the second angular wheel is nibbled with the first angular wheel
Close;
Interlayer, has multiple interlayers in each bridge opening, each bridge opening is separated into multiple individual cavities, individual cavities by interlayer
Glass fibre is inside filled with, the upper surface of interlayer has dug catch basin, shear thickening fluid is filled in catch basin.
The operation principle and advantage of the present invention is as follows:" bridge mechanical plate " utilizes the principle in arch bridge bridge opening, by solid wood sawdust
Make the tubular structure of uniqueness.Bridge opening is separated into multiple individual cavities by interlayer, and the glass fibre in individual cavities is as shearing
The skeleton of thickened fluid.Shear thickening fluid under capillary action, can be extracted out of catch basin on interlayer, and final infiltration is only
All glass fibres in vertical cavity.
The main reason for selecting glass fibre be glass fibre filament diameter several microns to twenties microns it
Between.The power of capillarity, has substantial connection with the diameter of capillary.The filament diameter of glass fibre is small, anticorrosive, rigidity
Height, is more suitable for the skeleton of shear thickening fluid compared with other natural fibers.
Sound is mainly to be transmitted by air vibration, and the transmission of sound is also the transmission of energy.When sound wave is delivered to
When on soundproof door, part energy can reflect, and part energy is delivered to the opposite side of door-plate, some energy meeting
Absorbed by door-plate.The quality of soundproof door soundproof effect, mainly reduces the energy that sound wave is delivered to door-plate opposite side, and increase
The acoustic wave energy that door-plate absorbs.Shear thickening fluid is very sticky, and shear thickening fluid certainly compared with clear water
Pliability is usually presented, and robustness is presented when being impacted.When sound wave is delivered on the door-plate of the present invention, can cause solely
Glass fibre vibration in vertical cavity, but shear thickening fluid can hinder glass fibre to vibrate so that the drive glass of sound
The energy increase of fiber vibration, that is, increase the part that door-plate absorbs acoustic wave energy.So as to achieve the purpose that to strengthen soundproof effect.
First angular wheel and the engagement of the second angular wheel, in door-plate switching process, i.e., door-plate is around the side of doorframe
Rotating process, turnover panel can be overturn under the drive of the second angular wheel.When open, turnover panel is horizontal, when door-plate is closed, turns over
Plate is turned over downwards, and is contacted with ground, has covered in the gap between door-plate and ground.Further improve soundproof effect.
Further, the bottom of turnover panel is equipped with tapetum.Tapetum can prevent turnover panel and ground friction, shock damage turnover panel,
And tapetum also has preferable soundproof effect.
Further, decorative pattern is carved with door-plate surface, the depth of decorative pattern is 3.5mm.The depth of decorative pattern reaches 3.5mm.Can
Strengthen absorbability of the decorative pattern to noise.
Further, the shear thickening fluid is that nano level two are slowly added in the polyglycol solution into stirring
Silica, then proceedes to high-speed stirred 2h, is then placed in 25 DEG C of baking oven and vacuumizes 2h, is made after removing bubble therein
It must form.Such shear thickening fluid prevents the effect of fiber vibration from becoming apparent from, and service life is longer.
Further, the shear thickening fluid is to add nano level silica to polyethylene glycol and then using ball
Grinding machine disperses 1h, then proceedes to high-speed stirred 2h, is then placed in 25 DEG C of baking oven and vacuumizes 2h, removes bubble therein
It is made what is formed afterwards.Such shear thickening fluid prevents the effect of fiber vibration from becoming apparent from.
Further, the ratio of weight and number of each component is silica 1 in shear thickening fluid, polyethylene glycol 2.It is such
Shear thickening fluid prevents the effect of fiber vibration from becoming apparent from.
Embodiment
Below by embodiment, the present invention is described in further detail:
Embodiment 1
Family expenses soundproof door, including:
Door-plate, door-plate are bridge mechanical plate, there are multiple bridge openings for running through whole door-plate vertically in door-plate, phases between bridge opening
Mutually parallel, door-plate is equipped with turnover panel, and turnover panel is located at the bottom of door-plate, and turnover panel is hinged with door-plate;
Doorframe, doorframe are the rectangle frame on no base, and the side of doorframe is equipped with hinge and the first angular wheel, the first taper
The side of gear and doorframe is fixed, and the second angular wheel is equipped with by hinge connection, the end of turnover panel between doorframe and door-plate, the
Two angular wheels are engaged with the first angular wheel, and doorframe is equipped with the groove for the movement of the second angular wheel;
Interlayer, has multiple interlayers in each bridge opening, each bridge opening is separated into multiple individual cavities, individual cavities by interlayer
Glass fibre is inside filled with, the upper surface of interlayer has dug catch basin, shear thickening fluid is filled in catch basin;
The production method of shear thickening fluid is that nano level dioxy is slowly added in the polyglycol solution into stirring
SiClx, then proceedes to high-speed stirred 2h, then disperses 1h with ball mill, is then placed in 25 DEG C of baking oven and vacuumizes 2h, removes
Bubble therein is removed, wherein the ratio of weight and number of each component is silica 1 in shear thickening fluid, polyethylene glycol 2.
When specifically using:Turnover panel on door-plate can be flipped up, at closing time, turnover panel and door-plate automatically when opening the door
It is horizontal.This reduces at closing time, the gap between door-plate and ground.
When being delivered to individual cavities, glass fibre can also vibrate sound, and in vibration processes, glass fibre can absorb
The energy of acoustical vibration, and the shear thickening fluid in glass fibre, can increase the difficulty of glass fibre vibration, by sound
Energy be converted to interior energy, in the lower air that dissipates.
Embodiment 2
Compared with Example 1, difference is, decorative pattern is carved with door-plate surface, the depth of decorative pattern is 3.5mm.Flower
The depth of line can strengthen absorbability of the decorative pattern to noise up to 3.5mm.
Embodiment 3
Compared with Example 2, difference is, airtight waterproof processing has been done in individual cavities, i.e., in individual cavities
Marine glue has been smeared, marine glue is coated between interlayer and bridge opening, can prevent shear thickening fluid from volatilizing.
Comparative example 1
Common refill door on the market, this experiment purchase, the bee of Jiangshan of Zhejiang Province Run Anmen industry Co., Ltd production
Nest refill door.
Comparative example 2
Common bridge mechanical plate door on the market, this experiment are selected, the production of Chongqing Ou Fanmen industry Co., Ltd
The door of model A03, its filling core material are bridge mechanical plate.
Comparative example 3
The Solid Door chosen on the market, this selection, the Solid Door of Jiangshan of Zhejiang Province Xu Paimen industry Co., Ltd production.
Comparative example 4
Compared with Example 1, difference is, turnover panel is not provided with door-plate.
Sound insulation value test is carried out to above-mentioned all products.This test is to utilize BSWA VS302USB alliteration credits
Analyzer tests the sound insulation value of all embodiments and comparative example, selects non-weighting network, and sound pressure level is the pink background of 90dB
Noise source, calculates data measurement, acoustic software Spectra LAB carry out data processing using third-octave.
The environment of test, in a room, after the door in embodiment 1 is installed, carries out sound insulation test, test is completed
Afterwards, remove, sound insulation test then is carried out to embodiment 2, then carry out the test of other embodiment and comparative example successively.
Table 1 is the sound of all embodiments and comparative example that are measured in door.
Table 1
From table, it can be clearly seen that, for embodiment 1 compared with comparative example 1-3, sound insulation value is significantly raised.Main cause
It can be attributed to, panel material is improved.The quality of soundproof door soundproof effect, mainly reduces sound wave and is delivered to door-plate opposite side
Energy, and the acoustic wave energy that increase door-plate absorbs.For shear thickening fluid compared with clear water, shear thickening fluid is more sticky,
Pliability is usually presented in shear thickening fluid, and robustness is presented when being impacted.When sound wave is delivered to the door-plate of the present invention
When upper, the glass fibre in individual cavities can be caused to vibrate, but shear thickening fluid can hinder glass fibre to vibrate so that sound
The energy increase for driving glass fibre vibration of sound, that is, increase the part that door-plate absorbs acoustic wave energy.So as to reach enhancing every
The purpose of audio fruit.
Compared with Example 4, the sound insulation value of embodiment 1 is excellent for embodiment 1, and main cause is that the structure of turnover panel reduces
Gap between door-plate and ground.
Compared with Example 1, the decorative pattern on door-plate surface can slightly lift sound insulation value to embodiment 2.
Above-described is only the embodiment of the present invention, and the general knowledge such as known concrete structure and characteristic is not made herein in scheme
Excessive description., without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these should also be considered as protection scope of the present invention, these are implemented all without the influence present invention
Effect and practical applicability.The scope of protection required by this application should be based on the content of the claims, in specification
The records such as embodiment can be used for the content for explaining claim.
Claims (6)
1. family expenses soundproof door, it is characterised in that including:
Door-plate, door-plate are bridge mechanical plate, are mutually put down between the bridge openings of whole door-plate, bridge opening vertically there are multiple in door-plate
OK;
Doorframe, doorframe are the rectangle frame on no base, and the side of doorframe is equipped with hinge and the first angular wheel, the first angular wheel
Fixed with the side of doorframe, by hinge connection between doorframe and door-plate, door-plate is equipped with turnover panel, and turnover panel is located at the bottom of door-plate
Portion, turnover panel are hinged with door-plate, and the end of turnover panel is equipped with the second angular wheel, and the second angular wheel is engaged with the first angular wheel;
Interlayer, there is multiple interlayers in each bridge opening, and each bridge opening is separated into multiple individual cavities by interlayer, in individual cavities
Filled with glass fibre, the upper surface of interlayer has dug catch basin, and shear thickening fluid is filled in catch basin.
2. family expenses soundproof door according to claim 1, it is characterised in that:The bottom of the turnover panel is equipped with tapetum.
3. family expenses soundproof door according to claim 1, it is characterised in that:Decorative pattern, decorative pattern are carved with the door-plate surface
Depth be 3.5mm.
4. family expenses soundproof door according to claim 1, it is characterised in that:The shear thickening fluid is, into stirring
Nano level silica is slowly added in polyglycol solution, then proceedes to high-speed stirred 2h, is then placed on 25 DEG C
2h is vacuumized in baking oven, is made what is formed after removing bubble therein.
5. family expenses soundproof door according to claim 1, it is characterised in that:The shear thickening fluid is, to poly- second two
Alcohol adds nano level silica and then disperses 1h with ball mill, then proceedes to high-speed stirred 2h, is then placed on 25
DEG C baking oven in vacuumize 2h, remove and be made what is formed after bubble therein.
6. family expenses soundproof door according to claim 5, it is characterised in that:The weight of each component in the shear thickening fluid
Portion rate is silica 1, polyethylene glycol 2.
Priority Applications (1)
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CN201610990657.6A CN106593250B (en) | 2016-11-10 | 2016-11-10 | Household soundproof door |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201610990657.6A CN106593250B (en) | 2016-11-10 | 2016-11-10 | Household soundproof door |
Publications (2)
Publication Number | Publication Date |
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CN106593250A CN106593250A (en) | 2017-04-26 |
CN106593250B true CN106593250B (en) | 2018-05-01 |
Family
ID=58591067
Family Applications (1)
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CN201610990657.6A Active CN106593250B (en) | 2016-11-10 | 2016-11-10 | Household soundproof door |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107857894A (en) * | 2017-11-22 | 2018-03-30 | 西安理工大学 | A kind of method for improving polyurathamc copolymer sqouynd absorption lowering noise ability |
CN110792375A (en) * | 2019-11-27 | 2020-02-14 | 湖北华强科技有限责任公司 | Shear thickening liquid armor protection structure with self-repairing function and use method |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1502712A (en) * | 1976-02-28 | 1978-03-01 | Danzer Kg Karl | Soundabsorbing door |
CN2740747Y (en) * | 2004-10-28 | 2005-11-16 | 黄金杨 | Wooden sound-absorbing door |
JP2007211523A (en) * | 2006-02-10 | 2007-08-23 | Nippon Sheet Glass Co Ltd | Sash structure |
CN201738748U (en) * | 2010-08-16 | 2011-02-09 | 南京康尼机电股份有限公司 | Material filling structure in a rail vehicle door leaf |
KR101156127B1 (en) * | 2008-04-24 | 2012-06-20 | 국방과학연구소 | Hybrid sheet and protecting products comprising the same |
CN204225700U (en) * | 2014-10-31 | 2015-03-25 | 嘉善华阳木业植绒有限公司 | A kind of flocking door |
CN204826783U (en) * | 2015-06-11 | 2015-12-02 | 张振英 | 35 noise reduction silence system of kilovolt transformer substation |
-
2016
- 2016-11-10 CN CN201610990657.6A patent/CN106593250B/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1502712A (en) * | 1976-02-28 | 1978-03-01 | Danzer Kg Karl | Soundabsorbing door |
CN2740747Y (en) * | 2004-10-28 | 2005-11-16 | 黄金杨 | Wooden sound-absorbing door |
JP2007211523A (en) * | 2006-02-10 | 2007-08-23 | Nippon Sheet Glass Co Ltd | Sash structure |
KR101156127B1 (en) * | 2008-04-24 | 2012-06-20 | 국방과학연구소 | Hybrid sheet and protecting products comprising the same |
CN201738748U (en) * | 2010-08-16 | 2011-02-09 | 南京康尼机电股份有限公司 | Material filling structure in a rail vehicle door leaf |
CN204225700U (en) * | 2014-10-31 | 2015-03-25 | 嘉善华阳木业植绒有限公司 | A kind of flocking door |
CN204826783U (en) * | 2015-06-11 | 2015-12-02 | 张振英 | 35 noise reduction silence system of kilovolt transformer substation |
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Publication number | Publication date |
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CN106593250A (en) | 2017-04-26 |
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Effective date of registration: 20191218 Address after: 314400 No.11, Weisan Road, Nongfa District, Chang'an Town, Haining City, Jiaxing City, Zhejiang Province Patentee after: Haining hi tech Zone Science and Innovation Center Co., Ltd Address before: 401233, No. 2-13, first floor, government building, Xinshi Town, Changshou District, Chongqing Patentee before: CHONGQING OFAN DOOR INDUSTRY CO., LTD. |
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