CN207829192U - A kind of sound-absorbing wallboard and its mounting structure - Google Patents
A kind of sound-absorbing wallboard and its mounting structure Download PDFInfo
- Publication number
- CN207829192U CN207829192U CN201820126248.6U CN201820126248U CN207829192U CN 207829192 U CN207829192 U CN 207829192U CN 201820126248 U CN201820126248 U CN 201820126248U CN 207829192 U CN207829192 U CN 207829192U
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- sound
- absorbing
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- wallboard
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Abstract
The utility model is related to a kind of sound-absorbing wallboards, including：It is provided with the sound-absorption hole that sectional area is square and there is the decoration panel layer of decorative pattern, the side opposite with architectural surface is provided with the raised line being distributed in longitude and latitude on the panel layer；It is set to the sound absorbing layer of the raised line bonding on the decoration panel layer, the side far from the raised line is set as corrugated surface on the sound absorbing layer；And the corrugated surface being set on the sound absorbing layer on the side far from the raised line, mounting surface and the sound absorbing layer encloses the substrate layer for being set as sound insulation cavity.Pass through the cavity in the space between decoration panel layer and sound absorbing layer, between sound absorbing layer and sound absorbing layer and substrate layer, third is carried out to sound to obstruct again, the sound-absorbing wallboard being arranged in this way, sound is consumed and obstructed by triple iris actions, so that the sound-absorbing wallboard has good sound-absorbing effect, room noise pollution is not only avoided, and can be reused so that the sound-absorbing wallboard more energy-saving and environmental protection.
Description
Technical field
The utility model is related to interior decoration technical field more particularly to a kind of sound-absorbing wallboards and its mounting structure.
Background technology
Sound-absorbing wallboard is a kind of ideal acoustic finishing material, is mainly used for preventing sound dispersion, and cut down sound, is applicable in
In places such as music hall, cinema, recording studios.
It is open（Bulletin）Number a kind of composite sound-absorbing wallboard is disclosed for the Chinese utility model patent of CN204781396U, wrapped
Include the internal babinet with cavity, it is characterised in that：The surface of the babinet is equipped with multiple perforation, and sound-absorbing is equipped in the babinet
Mineral wool layer and nonwoven layer.
Although can realize the simple purpose of installation in above patent document, merely by being opened in outer surface
On perforation, sound-absorbing mineral wool layer and nonwoven layer absorption elimination is carried out to sound, lead to the sound-absorbing effect of composite sound-absorbing wallboard
Difference.
Utility model content
In view of the deficienciess of the prior art, the first of the utility model is designed to provide a kind of sound-absorbing wallboard, tool
The advantage for having sound-absorbing effect good.
The above-mentioned purpose of the utility model technical scheme is that：
A kind of sound-absorbing wallboard, including：It is provided with the sound-absorption hole that sectional area is square and the decorative cover with decorative pattern
Plate layer, the side opposite with architectural surface is provided with the raised line being distributed in longitude and latitude on the panel layer；It is set to the decorative cover
On plate layer and sound absorbing layer Nian Jie with the raised line, for obstructing and absorbing acoustic energy, far from described on the sound absorbing layer
The side of raised line is set as corrugated surface；And it is set to the side far from the raised line, mounting surface and institute on the sound absorbing layer
It states the corrugated surface on sound absorbing layer and encloses and be set as sound insulation cavity, substrate layer for being installed with wall.
By using above-mentioned technical proposal, sound-absorption hole that sound is square from sectional area be passed to panel and sound absorbing layer it
Between by the overhead space of raised line, obstructed again to carry out first to sound, the sound after being passed to is by sound absorbing layer to sound energy
The consumption of amount, and certain absorption is generated to sound, to carry out the barrier of the second weight to sound, by the sound of sound absorbing layer
Sound and some faint noises after consumption are passed to the sound insulation cavity formed between the corrugated surface of sound absorbing layer and substrate layer
When interior, by the deadening of cavity, third being carried out to sound and is obstructed again, the sound after barrier is difficult to spread out of from substrate layer, this
The sound-absorbing wallboard of sample setting, is consumed and is obstructed to sound by triple iris actions, to achieve the purpose that abundant noise reduction,
So that the sound-absorbing wallboard has good sound-absorbing effect.
Further：The sound-absorption hole is one end section of decorative cover close to decoration panel more than close to the sound absorbing layer one
The sound-absorption hole of the positive quadrangular frustum pyramid shaped of side.
By using above-mentioned technical proposal so that sound relatively easily can enter suction from the larger one end of sectional area
In sound hole, collection to sound and the guiding function of sound-absorption hole are enhanced, to enhance the attraction power of sound-absorbing wallboard.
Further：The section length of side of the decorative cover side of the close decoration panel layer is 8 millimeters in the sound-absorption hole.
It is required to attract empty size also different since the wavelength of sound is different by using above-mentioned technical proposal, because
This uses the section length of side for 8 millimeters of sound-absorption hole, has not only reached preferable collection and guiding effect, and avoid and be distributed in
The influence of sound-absorption hole on the decorative cover of decoration panel layer to the decorative effect of decoration panel layer so that the sound-absorbing wallboard, which has, to be inhaled
Audio fruit is good, the advantage of good appearance.
Further：It is provided with cementing layer between the raised line and the sound absorbing layer.
By using above-mentioned technical proposal, the setting of cementing layer is be bonded when ensure that sound absorbing layer with decoration panel lamination conjunction
Stability, to ensure that the durability of above-mentioned sound-absorbing wallboard.
Further：It is equipped in the cementing layer and adheres to side adsorption net for glue.
It can make glue using adsorption net since glue can be flowed when smearing by using above-mentioned technical proposal
It is adhered in adsorption net when smearing, to be conducive to glued formable layer.
Further：The adsorption net is the nylon rope net with diamond-shaped meshes made of nylon rope braiding.
By using above-mentioned technical proposal, the shock absorption of nylon yarn is good, ensure that the damping property of sound-absorbing wallboard, avoiding makes
User accidentally impinges upon phenomenon on sound-absorbing wallboard and injured, to reduce security risk when sound-absorbing wallboard uses.
The utility model the and plant and be designed to provide a kind of mounting structure of sound-absorbing wallboard, have dismount it is easily excellent
Gesture.
The above-mentioned purpose of the utility model technical scheme is that：
A kind of mounting structure of sound-absorbing wallboard, including：Wall, card hole is offered on the wall, and the card hole is aperture
Side sectional area is less than the stepped hole of bottom hole side sectional area；Sound-absorbing wallboard described in any one of the above embodiments, on the sound-absorbing wallboard
Edge offers circular through hole perpendicular to the direction of its mounting surface；And be set to it is in the circular through hole, be used for and the card
The sound-absorbing wallboard to be mounted on the connected structure on the wall by hole assembly.
By using above-mentioned technical proposal, when installing sound-absorbing wallboard, by the connected structure and setting of setting in wall
On card hole cooperation, mounting plate is quick installed in a manner of grafting on wall so that the mounting structure have dismount it is convenient
Advantage.
Further：The connected structure includes：A part be placed in the circular through hole, another part protrude from institute
The mounting surface of sound-absorbing wallboard, clip-connecting rod for being clamped with the card hole are stated, close to the wall side on the clip-connecting rod
Mounting groove is radially offered, the part in the circular through hole is placed on the clip-connecting rod along perpendicular to its axially direction
It is symmetrically arranged with mounting ear, the inner wall of the mounting ear and the circular through hole is integrally formed；It is installed in the mounting groove simultaneously
Direction sliding, wedge block for being abutted with the cascaded surface of the stepped hole can be opened up along the mounting groove；One end and institute
State it is that wedge block the is fixedly connected, other end is fixedly connected with the slot bottom of the mounting groove, provided for the reset of the wedge block
The elastic component of restoring force；And be socketed on the clip-connecting rod and can occur relative to the clip-connecting rod it is opposite it is turning, for
The knob being pressed into the wedge block when dismantling sound-absorbing wallboard in the mounting groove.
First clip-connecting rod is aligned with card hole, and pass through pressing by using above-mentioned technical proposal when installing sound-absorbing wallboard
Clip-connecting rod is coordinated with card hole, then spinning knob so that knob is rotated relative to clip-connecting rod, after dress moves predeterminated position,
The wedge block in mounting groove is limited to due to the limitation departing from knob by knob, and wedge is driven by the elastic force that elastic component provides
Shape block is moved to the notch side of mounting groove so that wedge block and the cascaded surface of card hole push against, to which sound-absorbing wallboard to be mounted on
On wall, when dismantling sound-absorbing wallboard, it is only necessary to which turning knob moves wedge block to the slot bottom side of mounting groove, to make
It obtains wedge block to detach with the cascaded surface of card hole, so that clip-connecting rod is unlocked with card hole, to dismantle sound-absorbing wallboard, in this way
The mounting structure of setting, it is simple in structure, ingenious, and be easily achieved.
Further：The knob includes：The socket part that is socketed on the clip-connecting rod and with socket part one
Swivel head molding, for exerting a force when rotating the socket part；The peace for the clip-connecting rod is offered on the socket part
Fill the combination slot that ear accommodates, on the combination slot side far from the wall be provided with it is that the axial direction along socket part opens up,
Rotate the extension accommodated for the mounting ear when socket part.
By using above-mentioned technical proposal, combination slot is set on socket part, can not only be accommodated for mounting ear, Er Qieneng
Enough realize that knob is rotated relative to clip-connecting rod, in rotation, when the side wall far from extension side on mounting ear and combination slot pastes
When conjunction, wedge block lifts restrictions and in the combination slot that is accommodated on socket part, to protrude clip-connecting rod and the stepped groove in card hole
Sound-absorbing wallboard is mounted on wall by cooperation；When mounting ear is bonded with the side wall of extension side on combination slot, socket part will
Wedge block is pressed into and is limited in mounting groove, so that being unlocked in wedge block and card hole, sound-absorbing wallboard is detached with wall.
In conclusion the utility model has the advantages that：
First, sound-absorbing wallboard by cavity, sound absorbing layer and sound absorbing layer between panel layer and sound absorbing layer and substrate layer it
Between cavity realize to triple consumption of sound and barrier, to achieve the purpose that abundant noise reduction so that the sound-absorbing wallboard has
Good sound-absorbing effect；
Second, the setting of cementing layer ensure that sound absorbing layer is laminated stability be bonded when closing with decoration panel, to ensure
The durability of above-mentioned sound-absorbing wallboard.
Description of the drawings
Fig. 1 is the overall structure diagram of the mounting structure of the sound-absorbing wallboard of the utility model embodiment；
Fig. 2 is the sectional view of the mounting structure of the sound-absorbing wallboard of the utility model embodiment；
Fig. 3 is the connected structure schematic diagram of the mounting structure of the sound-absorbing wallboard of the utility model embodiment.
Reference numeral：1, wall；11, card hole；2, sound-absorbing wallboard；21, circular through hole；22, decoration panel layer；221, convex
Item；222, sound-absorption hole；23, sound absorbing layer；24, substrate layer；25, adsorption net；3, connected structure；31, clip-connecting rod；311, mounting ear；
32, wedge block；33, elastic component；34, knob；341, swivel head；342, socket part；343, combination slot.
Specific implementation mode
The utility model is described in further detail below in conjunction with attached drawing.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can as needed make the present embodiment the modification for not creating contribution after reading this specification, but only
It all to be protected by Patent Law in the right of the utility model.
The present embodiment is related to a kind of mounting structure of sound-absorbing wallboard, as shown in Figure 1, 2, including：Wall 1, sound-absorbing wallboard 2 with
And connected structure 3.
As shown in Figure 1, 2, card hole 11 is offered on wall 1, card hole 11 is that aperture side sectional area is cut less than bottom hole side
The stepped hole of area, in the present embodiment, card hole 11 are circular shape hole.2 upper edge of sound-absorbing wallboard is perpendicular to the side of its mounting surface
To offering circular through hole 21.Connected structure 3 is arranged in circular through hole 21, and for being assembled with card hole 11, thus by sound-absorbing
Wallboard 2 is mounted on wall 1.
Wherein, as shown in Figure 1, 2, sound-absorbing wallboard 2, including：Decoration panel layer 22, sound absorbing layer 23 and substrate layer 24.Dress
Decoration panel layer 22 is provided with the sound-absorption hole 222 that sectional area is square, and has decorative pattern, on decoration panel layer 22 with decoration
Layer opposite side in face is provided with raised line 221, and raised line 221 is whole to be distributed in longitude and latitude.Sound absorbing layer 23 is arranged in decoration panel layer 22
On, and Nian Jie with raised line 221, sound absorbing layer 23 is for obstructing and absorbing acoustic energy, the side far from raised line 221 on sound absorbing layer 23
It is set as corrugated surface.Substrate layer 24 is set to the side far from raised line 221 on sound absorbing layer 23, the mounting surface and sound-absorbing of substrate layer 24
Corrugated surface on layer 23, which encloses, is set as sound insulation cavity, and substrate layer 24 is used to install with wall 1.
As shown in Figure 2,3, connected structure 3 includes：Clip-connecting rod 31, wedge block 32, elastic component 33 and knob 34.Clip-connecting rod
31 parts are placed in circular through hole 21, and another part protrudes from the mounting surface of sound-absorbing wallboard 2, and clip-connecting rod 31 is used for and card hole 11
It is clamped, radially offers mounting groove close to 1 side of wall on clip-connecting rod 31, be placed on clip-connecting rod 31 in circular through hole 21
Part is symmetrically arranged with mounting ear 311 along perpendicular to axially direction, the inner wall one of mounting ear 311 and circular through hole 21 at
Type.Wedge block 32 is installed in mounting groove, and can be slided along the direction that opens up of mounting groove, and wedge block 32 is for the rank with stepped hole
Tread abuts, to which sound-absorbing wallboard 2 to be mounted on wall 1.33 one end of elastic component is fixedly connected with wedge block 32, the other end with
The slot bottom of mounting groove is fixedly connected, and elastic component 33 provides restoring force for the reset of wedge block 32.Knob 34 is socketed on clip-connecting rod 31
On, and opposite turn can occur relative to clip-connecting rod 31, knob 34 by wedge block 32 when dismantling sound-absorbing wallboard 2 for being pressed into installation
In slot.
As shown in Figure 2,3, in the present embodiment, clip-connecting rod 31 is circular cylinder, and mounting ear 311 is protrusion 31 table of clip-connecting rod
The rectangular block in face, wedge block 32 are located at the underface of mounting ear 311, and the cross-sectional area of wedge block 32 is less than the cross of mounting ear 311
The axial direction along clip-connecting rod 31 of sectional area, wedge block 32 is provided with lozenges, and elastic component 33 is spring, and knob 34 includes：
The socket part 342 that is socketed on clip-connecting rod 31 and with 342 integrally formed swivel head 341 of socket part, swivel head 341 rotating
For exerting a force when socket part 342；The combination slot 343 of the receiving of mounting ear 311 for clip-connecting rod 31, group are offered on socket part 342
It closes the side far from wall 1 on slot 343 and is provided with the extension that the axial direction along socket part 342 opens up, extension is socketed in rotation
It is accommodated for mounting ear 311 when portion 342.In other embodiments, the mounting ear 311 on clip-connecting rod 31 can also pass through welding manner
With 2 fixing assembling of sound-absorbing wallboard, or it is fixedly mounted on the inner wall of the circular through hole 21 on clip-connecting rod 31 by fastening bolt.
In the present embodiment, sound-absorption hole 222 is one end section of decorative cover close to decoration panel layer 22 more than close to sound-absorbing
The sound-absorption hole 222 of the positive quadrangular frustum pyramid shaped of 23 side of layer, close to the section of the decorative cover side of decoration panel layer 22 in sound-absorption hole 222
The length of side is 8 millimeters, and cementing layer is provided between raised line 221 and sound absorbing layer 23, is equipped in cementing layer for glue adherency side absorption
Net 25, adsorption net 25 are the nylon rope net with diamond-shaped meshes made of nylon rope braiding, and the thickness of decoration panel layer 22 is 15
Millimeter, 23 thickness of sound absorbing layer are 40 millimeters, and the material used in sound absorbing layer 23 is glass fibre, and 24 thickness of substrate layer is 20 millimeters,
The material of substrate layer 24 is pine.
The dismounting principle of the present embodiment is approximately as stating：When installing sound-absorbing wallboard 2 on wall 1, will first be arranged in sound-absorbing
The clip-connecting rod 31 in circular through hole 21 on wallboard 2 is aligned with the card hole 11 being opened on wall 1, then check clip-connecting rod 31 with
Knob 34 ensures that the wedge block 32 on clip-connecting rod 31 is accommodated in mounting groove completely before grafting, then passes through pressing so that clamping
Column 31 coordinates with card hole 11, after reaching scheduled installation site, rotates swivel head 341, and knob is driven by swivel head 341
Socket part 342 on 34 so that socket part 342 is opposite to relatively rotate with clip-connecting rod 31, until sliding slot is aligned with mounting groove, from
And limitation of the socket part 342 to wedge block 32 is released, the elastic force that the wedge block 32 after lifting restrictions is provided by elastic component 33 drives
Dynamic notch one Slideslip of the wedge block 32 to mounting groove so that wedge block 32 is abutted with the cascaded surface in card hole 11, to block
It connects column 31 and coordinates clamping with card hole 11, to which sound-absorbing wallboard 2 to be mounted on wall 1；When dismantling sound-absorbing wallboard 2, pass through rotation
Rotate button 34 so that the socket part 342 of knob 34 squeezes wedge block 32 to the slot bottom side of mounting groove, while compression elastic piece
33, to be the stored energy when skidding off mounting groove next time of wedge block 32, after wedge block 32 is squeezed into mounting groove, wedge block
32 detach with the cascaded surface of card hole 11, to release the locking between clip-connecting rod 31 and card hole 11, and then by 2 product of sound-absorbing wallboard
It is dismantled from wall 1.
Claims (9)
1. a kind of sound-absorbing wallboard, which is characterized in that including：
It is provided with the sound-absorption hole (222) that sectional area is square and the decoration panel layer (22) with decorative pattern, the panel
The side opposite with architectural surface is provided with the raised line (221) being distributed in longitude and latitude on layer；
Be set on the decoration panel layer (22) and it is Nian Jie with the raised line (221), for obstructing and absorbing acoustic energy
Sound absorbing layer (23), the side far from the raised line (221) is set as corrugated surface on the sound absorbing layer (23)；And
It is set on the sound absorbing layer (23) on the side far from the raised line (221), mounting surface and the sound absorbing layer (23)
Corrugated surface enclose be set as sound insulation cavity, for the substrate layer (24) installed with wall (1).
2. sound-absorbing wallboard according to claim 1, which is characterized in that the sound-absorption hole (222) is close to the decorative cover
One end section of decorative cover of plate layer (22) is more than the sound-absorption hole of the positive quadrangular frustum pyramid shaped close to (23) one end section of the sound absorbing layer
(222)。
3. sound-absorbing wallboard according to claim 2, which is characterized in that close to the decorative cover on the sound-absorption hole (222)
The section length of side of the decorative cover side of plate layer (22) is 8 millimeters.
4. sound-absorbing wallboard according to claim 1, which is characterized in that the raised line (221) and the sound absorbing layer (23) it
Between be provided with cementing layer.
5. sound-absorbing wallboard according to claim 4, which is characterized in that be equipped with the suction adhered to for glue in the cementing layer
Attached net (25).
6. sound-absorbing wallboard according to claim 5, which is characterized in that the adsorption net (25) is made of nylon rope braiding
Nylon rope net with diamond-shaped meshes.
7. a kind of mounting structure of sound-absorbing wallboard, which is characterized in that including：
Wall (1), card hole (11) is offered on the wall (1), and the card hole (11) is that aperture side sectional area is less than bottom hole
The stepped hole of side sectional area；
Sound-absorbing wallboard (2) as described in any one of claim 1-6, sound-absorbing wallboard (2) upper edge is perpendicular to its mounting surface
Direction offer circular through hole (21)；And
Be set to it is in the circular through hole (21), for the card hole (11) assemble with by the sound-absorbing wallboard (2) install
Connected structure (3) on the wall (1).
8. the mounting structure of sound-absorbing wallboard according to claim 7, which is characterized in that the connected structure (3) includes：
A part be placed in the circular through hole (21), another part protrude from the sound-absorbing wallboard (2) mounting surface, use
It is radially opened in the close wall (1) side on the clip-connecting rod (31) being clamped with the card hole (11), the clip-connecting rod (31)
Equipped with mounting groove, the part in the circular through hole (21) is placed on the clip-connecting rod (31) along perpendicular to its axially direction
It is symmetrically arranged with mounting ear (311), the mounting ear (311) and the inner wall of the circular through hole (21) are integrally formed；
Be installed in the mounting groove and can along the mounting groove open up direction sliding, for the ladder with the stepped hole
The wedge block (32) that face abuts；
One end with the wedge block (32) is fixedly connected, the other end is fixedly connected with the slot bottom of the mounting groove, be described
The reset of wedge block (32) provides the elastic component (33) of restoring force；And
Be socketed on the clip-connecting rod (31) and can occur relative to the clip-connecting rod (31) it is opposite it is turning, in dismounting sound-absorbing
The knob (34) being pressed into the wedge block (32) when wallboard (2) in the mounting groove.
9. the mounting structure of sound-absorbing wallboard according to claim 8, which is characterized in that the knob (34) includes：Socket
In on the clip-connecting rod (31) socket part (342) and with the socket part (342) it is integrally formed, for described in rotation
The swivel head (341) to exert a force when socket part (342)；The installation for the clip-connecting rod (31) is offered on the socket part (342)
The combination slot (343) that ear (311) accommodates, the side far from the wall (1) is provided with along socket part on the combination slot (343)
(342) extension that axial direction opens up, being accommodated for the mounting ear (311) when rotating socket part (342).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820126248.6U CN207829192U (en) | 2018-01-24 | 2018-01-24 | A kind of sound-absorbing wallboard and its mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820126248.6U CN207829192U (en) | 2018-01-24 | 2018-01-24 | A kind of sound-absorbing wallboard and its mounting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207829192U true CN207829192U (en) | 2018-09-07 |
Family
ID=63394732
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820126248.6U Expired - Fee Related CN207829192U (en) | 2018-01-24 | 2018-01-24 | A kind of sound-absorbing wallboard and its mounting structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277947A (en) * | 2018-02-01 | 2018-07-13 | 温州市旭阳艺术装饰工程有限公司 | A kind of pieced decoration panel bindiny mechanism |
| CN109610699A (en) * | 2018-12-22 | 2019-04-12 | 江苏华源建筑设计研究院股份有限公司 | Interior wall sound-insulating structure between a kind of house |
| CN109779105A (en) * | 2018-12-29 | 2019-05-21 | 浙江万川装饰设计工程有限公司 | A kind of energy saving building curtain wall to absorb sound |
| CN111485692A (en) * | 2020-04-26 | 2020-08-04 | 顺德职业技术学院 | Wallboard is decorated to hollow thermal-insulated syllable-dividing quick detach type |
| CN114086688A (en) * | 2021-11-18 | 2022-02-25 | 浙江大丰建筑装饰工程有限公司 | Theater noise protection system |
-
2018
- 2018-01-24 CN CN201820126248.6U patent/CN207829192U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277947A (en) * | 2018-02-01 | 2018-07-13 | 温州市旭阳艺术装饰工程有限公司 | A kind of pieced decoration panel bindiny mechanism |
| CN109610699A (en) * | 2018-12-22 | 2019-04-12 | 江苏华源建筑设计研究院股份有限公司 | Interior wall sound-insulating structure between a kind of house |
| CN109610699B (en) * | 2018-12-22 | 2020-06-16 | 江苏华源建筑设计研究院股份有限公司 | Interior wall sound insulation structure between house |
| CN109779105A (en) * | 2018-12-29 | 2019-05-21 | 浙江万川装饰设计工程有限公司 | A kind of energy saving building curtain wall to absorb sound |
| CN109779105B (en) * | 2018-12-29 | 2021-02-02 | 浙江万川装饰设计工程有限公司 | Energy-saving building curtain wall capable of absorbing sound |
| CN111485692A (en) * | 2020-04-26 | 2020-08-04 | 顺德职业技术学院 | Wallboard is decorated to hollow thermal-insulated syllable-dividing quick detach type |
| CN114086688A (en) * | 2021-11-18 | 2022-02-25 | 浙江大丰建筑装饰工程有限公司 | Theater noise protection system |
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Granted publication date: 20180907 Termination date: 20220124 |