CN108316518B - Partition walls and their installation methods - Google Patents

Abstract

The embodiment of the invention discloses a partition wall and an installation method thereof, wherein the partition wall comprises: the partition wall comprises a plurality of partition wall bodies, wherein a slot is formed in the first side of each partition wall body, a clamping connector is arranged on the second side of each partition wall body, and the slot is clamped with the clamping connector to connect the adjacent partition wall bodies. The embodiment of the invention can realize the rapid industrialized installation of the partition wall, greatly shorten the construction period, avoid the dirty condition of the traditional decoration operation site, have low noise and pollution and are beneficial to environmental protection; and the site does not need to be constructed by a skilled technical worker, so that the installation cost is reduced.

Description

Partition walls and their installation methods

Technical Field

The invention relates to the technical field of building decoration, and in particular to a partition wall and an installation method thereof.

Background technique

Lightweight interior partition walls refer to non-load-bearing lightweight interior partition walls. At present, lightweight interior partition walls are generally divided into skeleton partition walls, block partition walls, etc. Among them, skeleton partition walls first use wood or steel to form a skeleton, and then install panels on both sides of the skeleton. Block partition walls are non-load-bearing walls built with ordinary bricks. In the process of realizing the present invention, the inventors found that the existing skeleton partition walls have problems such as complex installation, long installation period, and high noise during on-site construction; block partition walls require on-site construction operations, which have a long construction period and a poor construction site environment. In addition, block partition walls have a large self-weight and are not suitable for high-rise residential buildings.

Summary of the invention

In view of this, an embodiment of the present invention provides a partition wall and an installation method thereof to solve the above technical problems.

An embodiment of the present invention provides a partition wall, which includes: a plurality of partition wall bodies, wherein a slot is provided on a first side of the partition wall body, a card connector is provided on a second side of the partition wall body, and the slot and the card connector are card-connected to connect adjacent partition wall bodies.

Optionally, the partition wall body includes: a first wall panel, a plurality of keels and a second wall panel, the first wall panel and the second wall panel are arranged opposite to each other, a plurality of first card slots are arranged on the first panel surface of the first wall panel facing the second wall panel, a plurality of second card slots corresponding to the first card slots are arranged on the second panel surface of the second wall panel facing the first wall panel, a first plug connector and a second plug connector are arranged on a single keel, the first plug connector is snap-connected with the first card slot, and the second plug connector is snap-connected with the second card slot, so as to connect the first wall panel and the second wall panel; the card connectors are respectively arranged on the first side of the first wall panel and the first side of the second wall panel, and the slots are respectively arranged on the second side of the first wall panel and the second side of the second wall panel.

Optionally, a first recessed portion is provided on the end surface of the card connector facing the slot, and a sound insulation strip is provided in the first recessed portion.

Optionally, it further includes: a sound absorbing layer, wherein the sound absorbing layer is arranged on the first board surface of the first wall panel, and the sound absorbing layer is located between adjacent keels.

Optionally, it further includes: a damping layer, which is respectively attached to the first panel surface of the first wall panel and the sound absorbing layer, and is located between the first wall panel and the sound absorbing layer.

Optionally, it also includes a sound-absorbing layer fixing part, which includes a connecting rod, and a first substrate and a second substrate arranged opposite to each other, the first substrate is fixedly connected to the first wall panel, the first end of the connecting rod is fixedly connected to the first substrate, a buckle is provided on the rod body of the connecting rod, a thread is provided on the rod body at the position of the buckle, a threaded hole is provided on the second substrate, the connecting rod passes through the sound-absorbing layer and is screwed to the threaded hole, and the buckle is clamped in the threaded hole.

Optionally, it also includes a first edge sealing member, which includes a first bottom plate, a third card slot and a fourth card slot, the third card slot and the fourth card slot are respectively formed by extending from the front side of the first bottom plate, the card joint of the first wall panel is card-connected with the third card slot, and the card joint of the second wall panel is card-connected with the fourth card slot.

Optionally, a second edge sealing member is further included, the second edge sealing member includes a base, the base is provided with a fifth slot, the first slot wall of the fifth slot is snap-fitted with the slot of the first wall panel; the second slot wall of the fifth slot is snap-fitted with the slot of the second wall panel.

Optionally, the keel includes two relatively arranged third plate surfaces, the third sides of the two third plate surfaces of the keel respectively have second recessed portions, the fourth sides of the two third plate surfaces of the keel respectively have third recessed portions, the two second recessed portions and the third side edge of the keel form the first plug-in joint, the two third recessed portions and the fourth side edge of the keel form the second plug-in joint, and the third side and the fourth side have the same extension direction.

An embodiment of the present invention further provides a partition wall installation method, which is characterized by comprising: inserting a card connector of a partition wall body into a slot of another adjacent partition wall body, and the card connector and the slot are card-engaged to connect the adjacent partition wall bodies.

The partition wall and the installation method thereof provided by the embodiment of the present invention respectively set card joints and slots on both sides of the partition wall body, and the adjacent partition wall bodies are connected by card joints and slots. All components are industrially produced in the factory, and only simple installation is required at the decoration site, thereby realizing rapid industrial installation of the partition wall, greatly shortening the construction period, avoiding the relatively dirty situation of the traditional decoration operation site, reducing noise and pollution, and being beneficial to environmental protection; moreover, no skilled technical workers are required to carry out the construction on site, thereby reducing the installation cost.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a partition wall according to an embodiment of the present invention.

FIG. 2 is an enlarged view of A in FIG. 1 .

FIG. 3 is an enlarged view of B in FIG. 1 .

FIG. 4 is a schematic structural diagram of a first wall panel of a partition wall according to an embodiment of the present invention.

FIG. 5 is a schematic structural diagram of a first edge sealing member of a partition wall according to an embodiment of the present invention.

FIG. 6 is a schematic structural diagram of a second edge sealing member according to an embodiment of the present invention.

FIG. 7 is a schematic structural diagram of a keel according to an embodiment of the present invention.

FIG. 8 is an assembly diagram of a wall transfer column and a first edge sealing member and a second edge sealing member according to an embodiment of the present invention.

FIG. 9 is a diagram showing the wall adapter column in use according to an embodiment of the present invention.

FIG. 10 is a schematic structural diagram of a sound absorbing layer fixing member according to an embodiment of the present invention.

FIG. 11 is a schematic diagram of a partial structure of a sound absorbing layer fixing member according to an embodiment of the present invention.

FIG. 12 is a schematic diagram of the installation of the switch panel mounting member according to an embodiment of the present invention.

FIG. 13 is a schematic structural diagram of a bottom box fixing portion according to an embodiment of the present invention.

FIG. 14 is a side view of FIG. 13 .

FIG. 15 is a schematic structural diagram of a wire duct according to an embodiment of the present invention.

FIG. 16 is a schematic structural diagram of a corner piece according to an embodiment of the present invention.

FIG. 17 is a schematic structural diagram of a first mounting fixture according to an embodiment of the present invention.

FIG. 18 is a schematic diagram of the installation of the first mounting fixture according to an embodiment of the present invention.

FIG. 19 is a schematic structural diagram of the mounting portion of an embodiment of the present invention.

FIG. 20 is a schematic structural diagram of a connector according to an embodiment of the present invention.

FIG. 21 is a schematic diagram of the installation of the second mounting fixture according to an embodiment of the present invention.

FIG. 22 is a schematic structural diagram of an edge trimming member according to an embodiment of the present invention.

FIG. 23 is a schematic diagram of the installation of the edge trimming member according to an embodiment of the present invention.

Detailed ways

The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. The same components are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

Fig. 1 shows a schematic diagram of the structure of a partition wall according to an embodiment of the present invention, Fig. 2 shows an enlarged view of A in Fig. 1, and Fig. 3 shows an enlarged view of B in Fig. 1. As shown in Figs. 1-3, the partition wall according to the embodiment of the present invention comprises: a plurality of partition wall bodies 100, a slot 115 is provided on a first side of the partition wall body 100, a clamping joint 114 is provided on a second side of the partition wall body 100, the slot 115 and the clamping joint 114 are clamped together to connect adjacent partition wall bodies 100.

When assembling the partition wall, several partition wall bodies 100 can be selected according to the length requirement of the partition wall. Adjacent partition wall bodies are connected by snapping together through the slots 115 and the snap joints 114 .

In a preferred embodiment of the present invention, the partition wall body can be shipped as a whole and can be directly spliced when used.

The partition wall provided by the embodiment of the present invention has card joints and slots respectively arranged on both sides of the partition wall body, and adjacent partition wall bodies are connected by card joints and slots. All components are industrially produced in the factory, and only simple installation is required at the decoration site, thereby realizing rapid industrial installation of the partition wall, greatly shortening the construction period, avoiding the relatively dirty situation of the traditional decoration operation site, reducing noise and pollution, and being beneficial to environmental protection; moreover, no skilled technical workers are required to carry out the construction on site, thereby reducing the installation cost.

Furthermore, the partition wall body 100 includes a first wall panel 11, a plurality of keels 7 and a second wall panel 12. The first wall panel 11 and the second wall panel 12 are arranged opposite to each other. A plurality of first card grooves 111 are arranged on the first panel surface of the first wall panel 11 facing the second wall panel 12. A plurality of second card grooves 121 corresponding to the first card grooves 111 are arranged on the second panel surface of the second wall panel 12 facing the first wall panel 11. A first plug connector and a second plug connector are arranged on each keel 7. The first plug connector is connected to the first card groove 111, and the second plug connector is connected to the second card groove 121.

When assembling the partition wall body 100, the first wall panel 11 can be installed and fixed, and then the first plug connectors of the plurality of keels 7 are inserted into the first card slots 111 one by one and are engaged with the first card slots 111. Then the second plug connectors of the keels 7 are inserted into the second card slots 121 on the second wall panel 12 one by one, and then the second wall panel 12 is installed and fixed. By setting the partition wall body as a splicable structure, the rapid industrial installation of the partition wall is further realized, the partition wall installation efficiency is improved, and the decoration cost is reduced.

As shown in Fig. 1-3, the partition wall may further include: a sound absorbing layer 4, which is installed on the first board surface of the first wall panel 11 and is located between adjacent keels 7. The sound insulation effect of the partition wall may be increased by providing the sound absorbing layer 4. In this embodiment, the sound absorbing layer 4 is made of sound absorbing cotton, which can reduce the weight of the partition wall while ensuring the sound insulation effect.

Preferably, as shown in Fig. 2, an air layer 14 is formed between the sound absorbing layer 4 and the second panel surface of the second wall panel 12, and air is filled in the air layer 14. Double-layer sound insulation is performed by the air layer and the sound absorbing layer 4, thereby increasing the sound insulation effect.

Preferably, the thickness ratio of the air layer 14 to the sound absorbing layer 4 is about 1:3 for better sound insulation.

Furthermore, the partition wall further includes: a damping layer 5, which is respectively attached to the first board surface of the first wall panel 11 and the sound absorbing layer 4, and is located between the first board surface of the first wall panel 11 and the sound absorbing layer 4. The sound insulation performance of the partition wall can be further improved by providing the damping layer 5. The damping layer 5 can be made of sound insulation felt.

In a preferred embodiment of the present invention, the first wall panel 11 has the same structure as the second wall panel 12. The structure of the lower wall panel will now be described using the first wall panel 11 as follows.

Preferably, as shown in Fig. 3-4, a card joint 114 is provided on the first side of the first wall panel 11, and a slot 115 is provided on the second side of the first wall panel 11, and the card joint 114 can be connected with the slot 115, and the extension direction of the first side and the second side is the same. By providing the pluggable card joint 114 and the slot 115 on the first wall panel 11 and the second wall panel 12, it is possible to achieve arbitrary splicing between multiple partition wall bodies 100 to meet the requirements of different lengths of partition walls. In this embodiment, the card joint 114 of the first wall panel 11 is formed by extending from the first side of the first wall panel 11 to facilitate processing. Similarly, the slot 115 of the first wall panel 11 is formed by extending from the second side of the first wall panel 11.

Furthermore, in Fig. 1, the end surface of the card connector 114 facing the slot 115 is provided with a first recessed portion 1141, and a sound insulation strip 8 is provided in the first recessed portion 1141, which can further improve the sound insulation effect of the partition wall. As shown in Fig. 3, the sound insulation strip 8 is hollow, and its interface perpendicular to the length direction is semicircular, so as to facilitate embedding in the first recessed portion 1141.

As shown in Fig. 4, the first slot 111 includes two slot walls, both of which are provided with first protrusions 1111, and the first plug connector of the keel 7 is clamped between the two first protrusions 1111 to ensure the firmness of the clamping. In the embodiment of Fig. 4, there are two first slots 111, which are respectively located on the first side and the second side of the first wall panel 11.

In this embodiment, the first wall panel 11 is hollow, which not only reduces the weight of the first wall panel 11, but also has a certain sound insulation effect because the first wall panel 11 is filled with air.

Preferably, a plurality of first partitions 112 are provided inside the first wall panel 11, and the plurality of first partitions 112 are respectively fixedly connected to the first inner side wall and the second inner side wall of the first wall panel 11, and the plurality of first partitions 112 separate the interior of the first wall panel 11 into a plurality of hollow areas 118, and the hollow areas 118 are used to place the wire duct 10. By providing the first partitions 112, the strength of the first wall panel 11 is ensured while reducing the weight. The first inner side wall is the inner side wall of the first wall panel 11 close to the first panel surface.

Furthermore, a fourth partition plate 113 is provided on the first inner side wall of the first wall plate 11, and the fourth partition plate 113 is provided between adjacent first partition plates 112. By providing the fourth partition plate 113, the strength of the first wall plate 11 is further enhanced, and the wire trough 10 can be clamped between the fourth partition plate 113 and the first partition plate 112 to prevent the clamping trough 10 from moving. Cables are arranged in the wire trough 10.

Optionally, a sixth protrusion 116 is provided on the first inner side wall of the first wall panel 11, and the first partition plate 112 is connected to the end surface of the sixth protrusion 116 facing the second inner side wall, and the wire trough 10 is clamped between the sixth protrusion 116 and the fourth partition plate 113, further ensuring the clamping stability and preventing the wire trough 10 from moving.

Preferably, the first partition 112 is vertically connected to the second inner wall of the first wall panel 11 and the end surface of the sixth protrusion 116 facing the second inner wall, respectively, so as to reduce the size of the first partition 112, reduce the production cost and reduce the weight of the first wall panel 11. The fourth partition 113 is perpendicular to the first inner wall and can be conveniently connected to the wire duct 10.

Furthermore, the sixth protrusion 116 is formed by the depression 117 of the first panel surface, further reducing the weight of the first wall panel 11 .

Preferably, the clamping joint 114 is hollow to reduce the weight of the first wall panel 11. A second protrusion 1142 is provided on the side of the clamping joint 114 close to the second wall panel 12, and a third protrusion 1151 is provided on the inner groove wall of the slot 115 close to the second wall panel 12. The clamping joint 114 is inserted into the slot 115 and is clamped together with the third protrusion 1151 through the second protrusion 1142.

Preferably, as shown in FIG5 , the partition wall further comprises a first edge seal 2, which comprises a first bottom plate 21, a third card slot 26 and a fourth card slot 22, wherein the third card slot 26 and the fourth card slot 22 are respectively formed by extending from the front side of the first bottom plate 21, and the back side of the first bottom plate 21 is connected to other components, such as a rough wall surface. The card joint 114 of the first wall panel 11 is engaged with the third card slot 26, and the card joint 114 of the second wall panel 12 is engaged with the fourth card slot 22. By providing the first edge seal 2, not only can the first wall panel 11 and the second wall panel 12 be better connected together, but also can be connected with other components through the first bottom plate 21 to improve assembly efficiency, and at the same time, the side edges of the first wall panel 11 and the second wall panel 12 can be sealed to improve the decoration effect. Among them, the front side refers to the side of the first bottom plate 21 facing the card joint 114, and the back side refers to the side of the first bottom plate 21 opposite to the front side.

Preferably, as shown in FIG5 , two first baffles 24 are further provided on the front of the first bottom plate 21. Two first guide plates 23 are provided on the front of the first bottom plate 21, and the two first baffles 24 are located between the two first guide plates 23. The third card slot 26 and the fourth card slot 22 are both formed between a first baffle 24 and its adjacent first guide plate 23. A fourth protrusion 25 extends from the plate surface of each first baffle 24 toward the first guide plate 23. The card connector 114 is inserted into the third card slot 26 and the fourth card slot 22, and is engaged by the fourth protrusion 25 and the second protrusion 1142.

Furthermore, the first guide plate 23 and the first baffle plate 24 are vertically connected to the first bottom plate 21 to facilitate the insertion of the card connector 114 into the third card slot 26 and the fourth card slot 22 .

Preferably, as shown in FIG6 , the partition wall further includes a second edge seal 3, which includes a base 31. The back of the base 31 is tightly connected to other components (such as a rough wall surface), and the front of the base 31 is provided with a fifth card slot 32, which is located in the middle of the front. The first slot wall 34 of the fifth card slot 32 is engaged with the slot 115 of the first wall panel 11, and the second slot wall 35 of the fifth card slot 32 is engaged with the slot 115 of the second wall panel 12. By providing the second edge seal 3, not only can the first wall panel 11 and the second wall panel 12 be better connected together, but also can be connected with other components through the first bottom plate 21, thereby improving the assembly efficiency, and at the same time, the side edges of the first wall panel 11 and the second wall panel 12 can be sealed to improve the decoration effect. The front of the base 31 refers to the side of the base 31 facing the slot 115. The back of the base 31 is the side of the base 31 opposite to the front.

In a preferred embodiment of the present invention, the first groove wall 34 and the second groove wall 35 are both provided with a fifth protrusion 37 , and the first groove wall 34 and the second groove wall 35 are inserted into the slot 115 and are engaged with the third protrusion 1151 through the fifth protrusion 37 .

Preferably, two second guide plates 33 are further provided on the front of the base 31, and the first groove wall 34 and the second groove wall 35 are located between the two second guide plates 33. One of the second guide plates 33 is inserted into the slot 115 of the first wall panel 11 together with the first groove wall 34, and is engaged with the slot 115. The other second guide plate 33 is inserted into the slot 115 of the second wall panel 12 together with the second groove wall 35, and is engaged with the slot 115. By providing the second guide plates 33, the engagement stability between the second edge sealing member 3 and the slot 115 can be increased, and the two wall panels can be better fixed.

In this embodiment, the width of the second guide plate 33 is smaller than the width of the first groove wall 34 and the second groove wall 35, so as to reduce the weight of the second edge sealing member while ensuring that the second guide plate 33 can be inserted into the slot 115. The width direction refers to the direction perpendicular to the base 31.

Preferably, the base 31 is hollow to reduce the weight of the base 31 .

Furthermore, at least one second partition is disposed inside the base 31, and the at least one second partition partitions the inside of the base 31 into at least two hollow areas 36. By disposing the second partition inside the base 31, the strength of the base 31 is ensured while reducing the weight of the base 31.

As shown in Fig. 6, there are two second partitions, and the two second partitions divide the interior of the base 31 into three hollow areas 36. As shown in Fig. 8, the fastener 135 can pass through the hollow area 36 in the middle of the base 31 to connect with the wall adapter column 13.

Preferably, as shown in FIG. 7 , the keel 7 includes two third panels arranged opposite to each other, and the second recessed portion 712 is provided on the third side of the two third panels of the keel 7 along the length direction. The two second recessed portions 712 and the third side edge 711 of the keel 7 form a first plug connector 71. The first plug connector 71 is formed by the two second recessed portions 712 on the third panel and the edge on the keel, so that the first plug connector 71 is easy to manufacture and reduces the cost. In addition, the thickness of the partition wall can be adjusted by adjusting the width of the keel, thereby improving the efficiency of partition wall installation.

Similarly, third recessed portions 722 are provided on the fourth sides of the two third plate surfaces of the keel 7 along the length direction. The two third recessed portions 722 and the fourth side edge 721 of the keel 7 form a second plug connector 72 .

In one embodiment of the present invention, the first angle between the plate surface between the third recessed portion 722 and the fourth side edge 721 and the fourth side edge 721 is 101-103°, so as to facilitate the second plug connector 72 to be inserted into the second slot 121. Preferably, the first angle is 102°, so as to facilitate the second plug connector 72 to be inserted into the second slot 121 more smoothly.

Similarly, the second angle between the board surface between the second recessed portion 712 and the third side edge 711 and the third side edge 711 is also 101-103°, so as to facilitate the first plug connector 71 to be inserted into the first slot 111. Preferably, the second angle is 102°, so as to facilitate the first plug connector 71 to be inserted into the first slot 111 more smoothly.

Furthermore, the keel 7 is hollow to reduce the weight of the keel 7 .

Preferably, at least one third partition plate 73 is disposed inside the keel 7, and the at least one third partition plate 73 partitions the inside of the keel 7 into at least two hollow areas. The third partition plate 73 can be provided to increase the strength of the keel 7. In this embodiment, the third partition plate 73 is parallel to the third side edge 711 and the fourth side edge 721, respectively, so as to reduce the size of the third partition plate 73 and better reduce weight.

Further, as shown in FIG8 , the partition wall further includes a wall transfer column 13, and the wall transfer column 13 includes at least one first side surface 131, and the first edge sealing member 2 or the second edge sealing member 3 is installed on the first side surface 131. By providing the wall transfer column 13, not only can the partition wall be turned, but also the connection between the partition walls can be made more firm, thereby ensuring the stability of the partition wall installation. In FIG8 , the first side surface 131 is fixedly connected to the back surface of the first bottom plate 21 of the first edge sealing member 2 by a fastener 135. The fastener 135 can be a screw, a bolt, etc.

Optionally, the wall adapter column 13 further includes at least one second side surface 132, and the first side surface 131 and the second side surface 132 are not in the same plane. The second side surface 132 is installed with the second edge sealing member 3 or the first edge sealing member 2. As shown in FIG8 , the first side surface 131 intersects with the second side surface 132, and the second side surface 132 is fixedly connected to the back surface of the base 31 of the second edge sealing member 3 by a fastener 135.

Preferably, as shown in FIG8 , the wall adapter column 13 is a hollow profile having a through hole 133 in the middle thereof to reduce the weight of the wall adapter column 13 , and the through hole 133 is used to fix the hollow profile to the ground or ceiling or other working places.

Preferably, as shown in FIG. 8 , a steel pipe 134 is sleeved in the through hole 133 so that the wall adapter column 13 has sufficient structural strength.

In the embodiment of FIG9 , the wall transfer column 13 is a square column having two opposite first side surfaces 131 and two opposite second side surfaces 132. A first edge sealing member 2 is installed on each of the two opposite first side surfaces 131; and a second edge sealing member 3 is installed on each of the two opposite second side surfaces 132. Each second edge sealing member 3 or first edge sealing member 2 can connect the first wall panel 11 and the second wall panel 12.

As shown in Fig. 10 and Fig. 11, the partition wall further comprises a sound absorbing layer fixing member 6, which comprises a connecting rod 62, and a first substrate 61 and a second substrate 63 arranged opposite to each other. The first substrate 61 is fixedly connected to the first board surface of the first wall panel 11. The first end of the connecting rod 62 is fixedly connected to the first substrate 61, a buckle 622 is arranged on the rod body of the connecting rod 62, a thread 621 is arranged on the rod body at the position of the buckle 622, and a threaded hole 631 is arranged on the second substrate 63. The connecting rod 62 passes through the sound absorbing layer 4 and is screwed to the threaded hole 631, and the buckle 622 is clamped in the threaded hole 631. By setting the sound absorbing layer fixing member 6, the sound absorbing layer 4 is sandwiched between the first substrate 61 and the second substrate 63, so as to improve the installation firmness of the sound absorbing layer 4 and prevent the sound absorbing layer 4 from being separated from the first board surface; and by connecting in two ways, the first substrate 61 and the second substrate 63 are prevented from being separated, so as to ensure the stability of the sound absorbing layer fixing member 6. As shown in Fig. 10, the first substrate 61 and the second substrate 63 are arranged in parallel.

As shown in FIG11 , the first substrate 61 is provided with a first mounting hole 611, and the first substrate 61 is mounted on the first wall panel 11 by passing a fastener through the first mounting hole 611, so as to facilitate the removal of the sound absorbing layer fixing member 6. The first substrate 61 is circular, and there are four first mounting holes 611. The fastener passes through the damping layer 5 and is fixedly connected to the first panel surface of the first wall panel 11.

Furthermore, a reinforcing rib 612 is provided on the first substrate 61 to improve the strength of the first substrate 61. As shown in Fig. 11, there are two reinforcing ribs 612, and the two reinforcing ribs 612 are vertically connected.

Preferably, the second substrate 63 is circular, the threaded hole 631 is located in the middle of the second substrate 63 , the threaded hole 631 is a circular hole, and the threaded hole 631 and the second substrate 63 are cocircular to ensure that the force at all locations of the second substrate 63 is balanced.

In addition, the second substrate 63 is further provided with a plurality of through holes, and the plurality of through holes are evenly distributed around the threaded hole 631 to reduce the weight of the second substrate 63 .

In the embodiment of FIG. 11 , the connecting rod 62 has two buckles 622, one buckle 622 is located at the second end of the connecting rod 62, and the other buckle 622 is located in the middle of the connecting rod 62, so as to achieve adjustable distance between the first substrate 61 and the second substrate 63, and meet the requirements of fixing sound-absorbing layers 4 of different thicknesses. The rods where the two buckles 622 are located are both provided with threads 621, and the outer diameter of the threads 621 is slightly smaller than the inner diameter of the threaded hole 631, so as to ensure that the buckles 621 are inserted into the threaded hole 631 and are clamped in the threaded hole 631.

Further, as shown in Fig. 12, the partition wall further comprises a switch panel mounting member, which comprises a wire trough 10 and a bottom box 16 for mounting the switch panel. The wire trough 10 is mounted in the hollow area of the second wallboard 12, the second wallboard 12 is provided with a third mounting hole, the bottom box 16 is mounted in the third mounting hole, the first box wall of the bottom box 16 is provided with a second mounting hole, and the first end of the wire trough 10 is plugged into the second mounting hole.

Preferably, as shown in FIGS. 12-14 , the switch panel mounting member further includes: a bottom box fixing portion 15 , and the bottom box 16 is installed in the third mounting hole through the bottom box fixing portion 15 .

The bottom box fixing portion 15 includes a first bent plate 151 and a sixth draw groove 152. The first bent plate 151 is roughly an "L"-shaped plate. The first bent plate 151 includes a first inclined plate 1512 and a first connecting plate 1511. The sixth draw groove 152 includes a first slot plate 1521, a second slot plate 1522 and a slot bottom plate 1523. The first slot plate 1521 and the second slot plate 1522 are respectively connected to the slot bottom plate 1523. The first inclined plate 1512 is respectively connected to the first side of the first connecting plate 1511 along the length direction and the first slot plate 1521. The first inclined plate 1512 is located between the first slot plate 1521 and the first connecting plate 1511.

The sixth slot 152 is inserted into the inner plate where the second panel surface of the second wall plate 12 is located, and the second box wall of the bottom box 16 opposite to the first box wall is respectively in contact with the slot bottom plate 1523 of the sixth slot 152 and the hole wall of the third mounting hole, and the box bottom of the bottom box 16 is fastened to the first connecting plate 1511. By providing the bottom box fixing portion 15, the installation efficiency of the bottom box 16 can be improved and the installation time of the switch panel can be shortened.

Furthermore, the first slot plate 1521 is roughly in a Z shape. The first slot plate 1521 includes: a second connecting plate 15212, a second inclined plate 15213 and a third connecting plate 15214, and the second inclined plate 15213 is respectively connected to the second connecting plate 15212 and the third connecting plate 15214. The slot bottom plate 1523 and the first inclined plate 1512 are respectively connected to the second connecting plate 15212, and the distance between the second connecting plate 15212 and the second slot plate 1522 is greater than the distance between the third connecting plate 15214 and the second slot plate 1522, so as to ensure the firmness of the slot 152 and the wall.

Preferably, the first side 15211 of the third connecting plate 15214 away from the slot bottom plate 1523 is folded toward the direction away from the second slot plate 152 to increase the size of the slot opening of the slot 152 for easy plugging into the wall. In this embodiment, the length of the first slot plate 1521 is equal to that of the second slot plate 1522 to ensure plugging strength. The length direction is perpendicular to the slot bottom plate 153.

Furthermore, the folding angle θ of the first side 15211 of the third connecting plate 15214 is 20°-40°, that is, after the first side 15211 is folded, the angle between the first side 15211 and the unfolded portion of the third connecting plate 15214 is 140-160°, so that the sixth slot 152 can be more smoothly plugged into the inner plate of the second wall plate 12. The folding angle θ is the angle between the folded position of the first side 15211 and its starting position.

Preferably, the folding angle θ=30°, that is, the angle between the first side 15211 of the third connecting plate 15214 and the unfolded portion of the third connecting plate 15214 is 150°, so that the first slot 152 can be plugged into the inner plate of the second wall panel 12 more quickly.

Preferably, the number of the sixth slots 152 is at least two, and the slot bottom plates 1523 of adjacent sixth slots 152 are connected by a transverse plate 153. The transverse plate 153 is coplanar with the slot bottom plates 1523 of the two slots 152. Adjacent sixth slots 152 are connected to the first inclined plate 1512 by the transverse plate 153. By providing a plurality of sixth slots 152, the plugging stability of the bottom box fixing portion 15 and the inner plate of the second wall plate 12 can be increased, and the two slots 152 are connected to the first bending plate 151 by a transverse plate 153, which can reduce the weight of the bottom box fixing portion 15 and facilitate installation. As shown in Figure 13, the two slots 152 are respectively located on both sides of the first bending plate 151.

Furthermore, the bottom box fixing portion 15 further includes a vertical plate 154, which is vertically connected to the horizontal plate 153, and the vertical plate 154 is respectively connected to the second connecting plates 15212 of the two first slot plates 1521, and the horizontal plate 153 is connected to the first inclined plate 1512 through the vertical plate 154 to increase the connection stability of the two sixth slots 152. In this embodiment, the vertical plate 154 is parallel to the first connecting plate 1511, and the angle between the first inclined plate 1512 and the vertical plate 154 is an acute angle to facilitate the installation of the bottom box.

As shown in FIG. 12 , the fastener passes through the bottom of the bottom box 16 and the first connecting plate 1511 of the bottom box fixing portion 15 to be connected to the sound absorbing layer 4 , which can increase the installation firmness of the bottom box 16 .

Further, as shown in FIG15 , the wire trough 10 includes a cover plate 101 and a second bottom plate 102. A first clamping arm 1021 and a second clamping arm 1022 extend from the second bottom plate 102 toward the plate surface of the cover plate 101. A seventh clamping slot 1011 and an eighth clamping slot 1012 extend from the cover plate 101 toward the plate surface of the second bottom plate 102, and the first clamping arm 1021 is clamped with the seventh clamping slot 1011, and the second clamping arm 1022 is clamped with the eighth clamping slot 1012, so as to facilitate the assembly and disassembly of the wire trough 10 and improve the wiring efficiency.

As shown in Figure 15, a first abutment portion 10211 is provided on the first clamping arm 1021, and the sixth slot plate of the seventh clamping slot 1011 away from the eighth clamping slot 1012 abuts against the first abutment portion 1021 to prevent the first clamping arm 1021 from bearing the weight of the cover plate 101 and protect the first clamping arm 1021 from damage.

Similarly, a second abutting portion 10221 is disposed on the second clamping arm 1021 , and the third slot plate of the eighth clamping slot 1012 away from the seventh clamping slot 1011 abuts against the second abutting portion 10221 .

In the embodiment of FIG. 15 , the angle between the first inner groove wall of the seventh slot 1011 near the eighth slot 1012 and the cover plate 101 is an acute angle, that is, the first inner groove wall is inclined toward the sixth slot plate. Similarly, the second inner groove wall of the eighth slot 1012 near the seventh slot 1011 is inclined toward the third slot plate, which can facilitate the clamping of the cover plate 101 and the second bottom plate 102. The part of the first clamping arm 1021 located above the first abutting portion 10211 is parallel to the first inner groove wall. The part of the second clamping arm 1022 located above the second abutting portion 10221 is parallel to the second inner groove wall to facilitate the clamping. Among them, the direction close to the cover plate 101 is up.

Preferably, as shown in Fig. 16, the switch panel mounting member further comprises a corner member 17. The corner member 17 comprises an adapter plate 173, a fourth slot plate 171 and a fifth slot plate 172 which are arranged opposite to each other.

The adapter plate 173 is bent, and includes a horizontal plate 1732 and a vertical plate 1731 connected vertically. The fourth slot plate 171 is connected to the horizontal plate 1732 and the vertical plate 1731 respectively, and the fifth slot plate 172 is connected to the horizontal plate 1732 and the vertical plate 1731 respectively. The second end of the wire trough 10 is clamped between the fourth slot plate 171 and the fifth slot plate 172. By providing the corner piece 17, the wire trough 10 can be turned, which is convenient for the layout of the wire trough 10. Moreover, the wire trough 10 is connected to the corner piece 17 by clamping, and the installation efficiency is high.

Furthermore, a ninth slot 1733 is provided on both the horizontal plate 1732 and the vertical plate 1731 , and the second bottom plate 102 of the wire duct 10 is inserted into the ninth slot 1733 , thereby improving the connection stability between the corner piece 17 and the wire duct 10 .

Preferably, as shown in FIG. 17 , the partition wall further includes a first mounting fixture 18, which includes: a fourth connecting plate 181 and a third bottom plate 182. A hollow groove 1823 is provided on the front of the third bottom plate 182, and the hollow groove 1823 is formed by a depression on the front of the third bottom plate 182. The hollow groove 1823 is arranged along the width direction of the third bottom plate 182, and the hollow groove 1823 divides the third bottom plate 182 into a fourth bottom plate 1821 and a fifth bottom plate 1822 along the length direction. The fourth connecting plate 181 is vertically connected to the fourth bottom plate 1821, and the fourth bottom plate 1821 is located between the fifth bottom plate 1822 and the fourth connecting plate 181. The fifth bottom plate 1822 can be folded along the hollow groove 1823 toward the direction close to the fourth connecting plate 181. The folding angle β of the fifth bottom plate 1822 is less than or equal to 90°. The folding angle β refers to the angle between the initial and final positions of the fifth bottom plate 1822.

As shown in FIG18 , when the first installation fixture 18 is used, the third bottom plate 182 is fixed to the original wall by fasteners, wherein the front side of the third bottom plate 182 refers to the side facing away from the original wall. The first wall panel 11 and the second wall panel 12 are pushed into the first installation fixture 18, and the groove wall of the slot 115 of the first wall panel 11 is fastened and connected to the fourth connecting plate 181 by fasteners. Then, the fifth bottom plate 1822 is folded 90° according to the groove 1823, so that the first installation fixture 18 is U-shaped. Finally, the groove wall of the slot 115 of the second wall panel 12 is fastened and connected to the fifth bottom plate 1822. When the wall panel is used as the base layer, the finishing layer can be installed on the wall panel first, and then the fifth bottom plate 1822 is folded and fastened to the finishing layer, which will not cause the problem of uneven laying of the finishing panel, and the overall decoration effect is good.

Optionally, as shown in FIG18 , the first mounting fixture 18 further includes: a sound insulation layer 183, and the sound insulation layer 183 is attached to the front surface of the fourth bottom plate 1821. By providing the sound insulation layer 183, noise can be prevented from penetrating between the partition wall and the original wall, thereby improving the noise reduction effect. In this embodiment, the material of the sound insulation layer 183 is sound insulation rock wool to save costs.

Optionally, the hollow groove 1823 is a V-shaped groove to reduce the processing difficulty of the hollow groove and reduce the manufacturing cost. The V-shaped groove means that the cross section of the hollow groove perpendicular to the length direction is V-shaped.

Preferably, the two groove walls of the V-shaped groove are perpendicular, and the angles between the two groove walls and the front surface of the third bottom plate 182 are equal, that is, the angle between each groove wall of the V-shaped groove and the front surface of the third bottom plate 182 is 45°, so that after the fifth bottom plate 1822 is folded 90°, the two groove walls can fit together, avoiding relative movement between the fifth bottom plate 1822 and the second wall panel 12, thereby ensuring the stability of the partition wall installation.

Furthermore, the material of the first mounting fixture 18 is a light steel plate, which can not only reduce the difficulty of folding the fifth bottom plate 1822, but also extend the service life of the first mounting fixture 18 and reduce the cost of use.

Preferably, as shown in FIG19 , the partition wall further includes a second mounting fixture, which includes: a mounting portion 40 and a plug-in connector 42. The mounting portion 40 is in a groove shape, and includes a first folding plate 401, a middle plate 403, and a second folding plate 402. The first folding plate 401 and the second folding plate 402 are respectively connected to the middle plate 403 and are located on the same side of the middle plate 403. The middle plate 403 is located between the first folding plate 401 and the second folding plate 402. The width of the first folding plate 401 is greater than the width of the second folding plate 402, wherein the width direction refers to the direction perpendicular to the middle plate.

As shown in Fig. 20, the plug-in component 42 includes a third substrate, and the third substrate is connected to the second wall panel 12 via fasteners. A second bent plate 421 extends from the surface of the third substrate away from the first folded plate 401, and the second bent plate 421 and the third substrate form a tenth slot, and the second folded plate 402 is plugged into the tenth slot.

As shown in FIG. 21 , when the second installation fixture is used, first, it is installed on the ground or ceiling through the middle plate 403 by fasteners. Then, one side of the first wall plate 11 along the width direction and one side of the second wall plate along the width direction are inserted into the installation portion 40, abutted against the middle plate 402, and the first folding plate 401 is fixedly connected with the first wall plate 11 by fasteners. Then, the plug-in connector 42 is plugged into the second folding plate 402, and the plug-in connector 42 is connected with the second wall plate 12 by fasteners. The first wall plate 11 and the second wall plate 12 are connected to the ground or ceiling by the second installation fixture, and after installation, there is no effect on the overall impact resistance of the lightweight partition wall, and no cracks will be generated between the lightweight partition wall and the original wall body, and there is no need for repeated construction, and the decoration cost is low. In this embodiment, the notch width of the tenth card slot is equal to the thickness of the second folding plate 402, which can prevent the second folding plate 402 from shaking in the tenth card slot and ensure the plug-in firmness of the second folding plate 402 and the tenth card slot.

Further, as shown in FIG22 , the partition wall further includes a trimming member, which includes: a side cover plate 191 and a buckle strip 192. The front side of the side cover plate 191 is a decorative surface, which can be changed and selected according to the design style and decoration requirements. The side opposite to the front side of the side cover plate 191 is the back side.

The back side cover 191 extends a first extension arm 1911 and a second extension arm 1912 in a direction away from the front side, and the first extension arm 1911 and the second extension arm 1912 are arranged opposite to each other. A seventh protrusion is arranged on the plate surface of the first extension arm 1911 facing the second extension arm 1912. An eighth protrusion is arranged on the plate surface of the second extension arm 1912 facing the first extension arm 1911. The buckle strip 192 is embedded between the first extension arm 1911 and the second extension arm 1912, and is clamped between the seventh protrusion and the eighth protrusion.

As shown in FIG. 23 , when the edge trimming piece is used, the third bottom plate 182 of the first mounting fixture 18 is first fixed to the original wall by fasteners, and then the clamping joint 114 of the first wall panel 11 and the clamping joint 114 of the second wall panel 12 are inserted into the first mounting fixture 18 and abutted against the sound insulation layer 183. The buckle strip 192, the fourth connecting plate 181 and the clamping joint 114 of the first wall panel 11 are fastened and connected by fasteners. Then, the side cover plate 191 is selected according to the decoration style, and the side cover plate 191 is buckled on the buckle strip 192, and the side cover plate 191 covers the guide rail or keel. When the wall panel is directly used as the surface layer, since the front of the side cover plate 191 is consistent with the decoration style of the wall panel, the decoration effect is good, and the side cover plate is easy to clean, repair and replace, which can meet different decoration styles.

Optionally, as shown in FIG. 22 , the buckle strip 192 is groove-shaped, and includes a first buckle plate, a second buckle plate, and a third buckle plate 1921. The first side of the first buckle plate and the first side of the second buckle plate are respectively connected to the third buckle plate 1921 and are located on the same side of the third buckle plate 1921. The third buckle plate 1921 is located between the first buckle plate and the second buckle plate. Buckle columns 1922 are provided on the second side of the first buckle plate and the second side of the second buckle plate. The buckle columns 1922 are respectively engaged with the seventh protrusion and the eighth protrusion, and the first side and the second side have the same extension direction. By setting the buckle strip 192 to be groove-shaped, the structure of the buckle strip 192 can be simplified, the weight of the buckle strip 192 can be reduced, and the production and installation can be facilitated. In this embodiment, the first side and the second side are both sides of the first buckle plate and the second buckle plate along the length direction.

Furthermore, a fourth recessed portion 19211 is provided in the middle of the third gusset plate 1921, and the fourth recessed portion 19211 is located between the first gusset plate and the second gusset plate. By providing the fourth recessed portion 19211, the installation of the fastener can be facilitated and the installation efficiency can be improved. In this embodiment, the fourth recessed portion 19211 is a V-shaped groove, which further improves the installation efficiency of the fastener.

Preferably, the clamping post 1922 is a cylinder, so that the clamping post 1922 can be better clamped between the first extension arm 1911 and the second extension arm 1912 .

Optionally, an eleventh slot 1913 for installing the sealing strip 8 extends from the third side of the side cover plate 191 near the first extension arm 1911. The eleventh slot 1913 and the first extension arm 1911 are located on the same side of the side cover plate 191, and the notch of the eleventh slot 1913 faces away from the first extension arm 1911. By providing the eleventh slot 1913, the eleventh slot 1913 abuts against the original wall through the sealing strip 8, so that the sealing between the side cover plate 191 and the original wall can be achieved, and the sound insulation effect can be improved; and the gap between the side cover plate 191 and the original wall can be beautified, the decoration effect can be improved, and the collision between the partition wall and the original wall can be prevented.

Preferably, the back side of the side cover plate 191 further extends a twelfth slot 1914 for installing the sealing strip 8 in a direction away from the front side, and the first extension arm 1911 and the second extension arm 1912 are located between the eleventh slot 1913 and the twelfth slot 1914. The twelfth slot 1914 abuts against the wall panel through the sealing strip 8, thereby sealing and beautifying the gap between the side cover plate 191 and the wall panel and improving the decoration effect.

Furthermore, a fifth partition 19141 is provided in the twelfth slot 1914, and the fifth partition 19141 is respectively connected to the two inner walls of the twelfth slot 1914 to increase the strength of the twelfth slot 1914, extend the service life of the side cover 191, and reduce the setting size of the sealing strip to reduce the decoration cost.

Preferably, the fifth partition plate 19141 is parallel to the back surface of the side cover plate 191 so that the sealing strip can be installed smoothly.

Furthermore, the first extension arm 1911 and the second extension arm 1912 are both perpendicular to the back surface of the side cover plate 191 to facilitate the insertion of the buckle strip 192 .

Preferably, the buckle strip 192 and the side cover plate 191 are both extruded profiles, which are manufactured by extrusion process, have high production efficiency and are conducive to industrialized mass production.

Based on the above partition wall, an embodiment of the present invention further provides a partition wall installation method, which includes:

The card connector of one partition wall body is inserted into the slot of another adjacent partition wall body, and the card connector and the slot are card-connected to connect the adjacent partition wall bodies.

The partition wall installation method provided by the embodiment of the present invention respectively sets card joints and slots on both sides of the partition wall body, and adjacent partition wall bodies are connected by card joints and slots. All components are industrially produced in the factory, and only simple installation is required at the decoration site, thereby realizing rapid industrial installation of the partition wall, greatly shortening the construction period, avoiding the relatively dirty situation of the traditional decoration operation site, reducing noise and pollution, and being beneficial to environmental protection; moreover, no skilled technical workers are required to carry out construction on site, thereby reducing installation costs.

The technical solution of the present invention is described in detail above in conjunction with specific embodiments, and the described specific embodiments are used to help understand the concept of the present invention. Derivations and modifications made by those skilled in the art based on the specific embodiments of the present invention also fall within the protection scope of the present invention.

Claims (8)

1. A partition wall, comprising: the device comprises a plurality of partition wall bodies, wherein a slot is formed in a first side of each partition wall body, a clamping connector is arranged on a second side of each partition wall body, and the slot is clamped with the clamping connector to connect the adjacent partition wall bodies;

The partition wall body all includes: the first wallboard is arranged opposite to the second wallboard, a plurality of first clamping grooves are formed in the first wallboard towards the first board surface of the second wallboard, a plurality of second clamping grooves which are in one-to-one correspondence with the first clamping grooves are formed in the second board surface of the second wallboard towards the first wallboard, a first plug connector and a second plug connector are arranged on a single keel, the first plug connector is in clamping connection with the first clamping grooves, and the second plug connector is in clamping connection with the second clamping grooves to connect the first wallboard with the second wallboard; the clamping connectors are respectively arranged on a first side of the first wallboard and a first side of the second wallboard, and the slots are respectively arranged on a second side of the first wallboard and a second side of the second wallboard;

A plurality of first partition plates are arranged in the first wallboard and are fixedly connected with the first inner side wall and the second inner side wall of the first wallboard respectively, a fourth partition plate is arranged on the first inner side wall of the first wallboard and is arranged between the adjacent first partition plates; the first inner side wall of the first wallboard is provided with a sixth protruding part, the first partition board is connected with the end face, facing the second inner side wall, of the sixth protruding part, and the wire slot is clamped between the sixth protruding part and the fourth partition board;

The partition wall further includes: the sound-absorbing layer is arranged on the first plate surface of the first wallboard, and the sound-absorbing layer is positioned between adjacent keels; an air layer is formed between the sound absorbing layer and the second plate surface of the second wallboard, and air is filled in the air layer.

2. The partition wall of claim 1, wherein the end face of the clip facing the slot is provided with a first recess, and a sound insulation strip is disposed in the first recess.

3. The partition wall of claim 1, further comprising: the damping layer is respectively attached to the first plate surface of the first wallboard and the sound absorption layer, and is positioned between the first wallboard and the sound absorption layer.

4. The partition wall of claim 1, further comprising a sound absorbing layer fixing member, wherein the sound absorbing layer fixing member comprises a connecting rod, a first base plate and a second base plate which are oppositely arranged, the first base plate is fixedly connected with the first wall plate, a first end of the connecting rod is fixedly connected with the first base plate, a buckle is arranged on a rod body of the connecting rod, threads are arranged on the rod body at the position where the buckle is located, a threaded hole is formed in the second base plate, the connecting rod passes through the sound absorbing layer and is in threaded connection with the threaded hole, and the buckle is clamped in the threaded hole.

5. The partition of any one of claims 1-4 further comprising a first edge seal comprising a first base plate, a third slot and a fourth slot, the third slot and the fourth slot each extending from a front face of the first base plate, the clip of the first wall panel being clip-connected to the third slot, the clip of the second wall panel being clip-connected to the fourth slot.

6. The partition of any one of claims 1-4 further comprising a second edge seal, the second edge seal comprising a base, a fifth slot provided on the base, a first slot wall of the fifth slot being engaged with a slot of the first wall panel; the second groove wall of the fifth clamping groove is clamped with the slot of the second wallboard.

7. The partition of claims 1-4 wherein the keel includes two oppositely disposed third panels, each of the two third panels of the keel having a second recess on a third side thereof, each of the two third panels of the keel having a third recess on a fourth side thereof, the two second recesses forming the first connector with a third side edge of the keel, the two third recesses forming the second connector with a fourth side edge of the keel, the third side and the fourth side extending in the same direction.

8. A method of installing a partition wall, comprising:

the clamping connector of one partition wall body is inserted into the slot of the other partition wall body adjacent to the clamping connector, and the clamping connector is clamped with the slot to connect the adjacent partition wall bodies;

The partition wall body all includes: the first wallboard is arranged opposite to the second wallboard, a plurality of first clamping grooves are formed in the first wallboard towards the first board surface of the second wallboard, a plurality of second clamping grooves which are in one-to-one correspondence with the first clamping grooves are formed in the second board surface of the second wallboard towards the first wallboard, a first plug connector and a second plug connector are arranged on a single keel, the first plug connector is in clamping connection with the first clamping grooves, and the second plug connector is in clamping connection with the second clamping grooves to connect the first wallboard with the second wallboard; the clamping connectors are respectively arranged on a first side of the first wallboard and a first side of the second wallboard, and the slots are respectively arranged on a second side of the first wallboard and a second side of the second wallboard;

A plurality of first partition plates are arranged in the first wallboard and are fixedly connected with the first inner side wall and the second inner side wall of the first wallboard respectively, a fourth partition plate is arranged on the first inner side wall of the first wallboard and is arranged between the adjacent first partition plates; the first inner side wall of the first wallboard is provided with a sixth protruding part, the first partition board is connected with the end face, facing the second inner side wall, of the sixth protruding part, and the wire slot is clamped between the sixth protruding part and the fourth partition board;

The partition wall further includes: the sound-absorbing layer is arranged on the first plate surface of the first wallboard, and the sound-absorbing layer is positioned between adjacent keels; an air layer is formed between the sound absorbing layer and the second plate surface of the second wallboard, and air is filled in the air layer.