CN217353290U

CN217353290U - Right-angle closing-in assembly for concave-convex background wall

Info

Publication number: CN217353290U
Application number: CN202220725344.9U
Authority: CN
Inventors: 丁欣欣; 丁泽成; 周东珊; 李鹏程; 蔡帅帅; 李建斌
Original assignee: Zhejiang Yasha Decoration Co Ltd
Current assignee: Zhejiang Yasha Decoration Co Ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-09-02
Anticipated expiration: 2032-03-30

Abstract

The utility model relates to an assembled wall technical field especially relates to a right angle binding off subassembly for unsmooth wall. The concave-convex background wall comprises a plurality of wallboards, the right-angle closing-in assembly comprises four mounting bars and a closing-in frame, the four mounting bars are fixedly connected with the wall body, the four mounting bars are spliced to form a rectangular frame, the closing-in frame is arranged in the rectangular frame, and the wallboards are arranged outside the rectangular frame; the binding off frame is formed by four sides board end to end connection, the one end of mounting bar with the terminal surface butt of wallboard, the other end with the sideboard butt of binding off frame. In the application, the mounting strip is designed to support the wallboard, so that the mounting stability of the wallboard on the wall body is ensured; meanwhile, the closing-up frame is designed to seal the splicing gap of the mounting strip, so that the effects of closing up and preventing the splicing gap from entering ash are achieved.

Description

Right-angle closing-in assembly for concave-convex background wall

Technical Field

The utility model relates to an assembled wall technical field especially relates to a right angle binding off subassembly for unsmooth wall.

Background

The background wall has good decoration to the wall, also can play the effect of protection wall, receives people's liking deeply. The traditional background wall is a home decoration art for decorating family living room televisions, sofas, halls, bedrooms and the like, and by the novel conception and the advanced process, the traditional background wall not only meets the decoration requirements of consumers, but also reflects the unique aesthetic style of the art of owners, so that the traditional background wall becomes the perfect combination of business and art.

The traditional background wall is subjected to overhead treatment by wood strips and base plates. Firstly, the battens need to be subjected to fireproof and anticorrosive treatment, then the battens are used for base leveling, and further the base layer plate is sealed, so that an overhead layer appears on the wall surface, and the method is complex in installation, labor-consuming and time-consuming, examines the manual capability of a master worker on the site, and is not favorable for assembly decoration; the existing background walls are mostly decorative, have single functions and cannot meet the requirements of people; when a large plate needs to be hung on the background wall, the base layer is usually built into an overhead base layer in a steel frame welding mode, the labor cost and the material cost are high, special workers are needed for construction, customization is difficult, and the needs of owners are difficult to meet.

A television is usually required to be installed on a background wall, and a patent document with the publication number of CN113266119A discloses an assembled large-panel television background wall, which comprises a back structure, large-panel ceramic and a frame component; the back structure and the large plate ceramic are both arranged in the frame from back to front; the large plate ceramic can be provided with a first mounting groove for accommodating a television.

In this application, obtain the mounting hole that is used for installing the TV through the mode of trompil on the big board, cause big board fracture damage easily to big board trompil, but also have the trompil inaccuracy, the cutting department is comparatively coarse causes injury scheduling problem easily to people and TV. Meanwhile, after the hole is formed, the large plate above the mounting hole is hung on a wall, and a structure for bearing and supporting the large plate is not arranged below the large plate, so that the large plate is easy to fall off.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the above problem, a right angle binding off subassembly for unsmooth wall is provided.

The technical scheme of the utility model for solving the problems is that, a right-angle closing-in component for a concave-convex background wall is provided, the concave-convex background wall comprises a plurality of wallboards, the right-angle closing-in component comprises four mounting bars and a closing-in frame, the four mounting bars are all fixedly connected with the wall body, and the four mounting bars are spliced to form a rectangular frame, the closing-in frame is arranged in the rectangular frame, and the wallboards are arranged outside the rectangular frame; the binding off frame is formed by four sides board end to end connection, the one end of mounting bar with the terminal surface butt of wallboard, the other end with the sideboard butt of binding off frame.

As a preferred aspect of the present invention, the mounting bar includes a fixing member and an adjusting member, the fixing member is fixedly connected to the wall and is provided with an insertion slot, and the adjusting member includes an insertion bar for inserting into the insertion slot in a direction not parallel to the wall and a receiving plate connected to the insertion bar; the bearing plate is parallel to the wall body, one end of the bearing plate is abutted to the end face of the wall plate, and the other end of the bearing plate is abutted to the side plate of the closing-up frame.

Preferably, the insertion strip is inserted into the insertion groove along a direction perpendicular to the wall.

Preferably, the inner wall of the insertion groove or/and the outer wall of the insertion strip are provided with friction lines.

As a preferred aspect of the present invention, the fixing member includes a bottom plate connected to the wall, a first side plate connected to the bottom plate in a non-parallel manner, and a second side plate connected to the bottom plate in a non-parallel manner, and the insertion groove is formed between the bottom plate, the first side plate, and the second side plate; the first side plate is far away from the outer side face of the insertion groove and is flush with the end face of the bearing plate.

As the utility model discloses a preferred, the one end of accepting board and wallboard butt is equipped with the backstop lug, the backstop lug is close to the one side butt of wall body with the wallboard.

As the utility model discloses a preferred, still include the set screw that is used for connecting first curb plate, insertion strip and second curb plate.

As the utility model discloses a preferred, first curb plate, second curb plate and the equal inside hollow of insertion strip.

As the utility model discloses a preferred, the bottom plate includes the gluey connecting portion that splices with the wall body and passes through the nail connecting portion of connecting screw connection with the wall body.

As the utility model discloses a preferred, nail connecting portion are inside hollow and be equipped with the gusset plate, the gusset plate is including supplying the reinforcement portion that connecting screw passed.

The utility model has the advantages that:

1. in the application, the mounting strip is designed to support the wallboard, so that the mounting stability of the wallboard on the wall body is ensured; meanwhile, the closing-up frame is designed to seal the splicing gap of the mounting strip, so that the effects of closing up and preventing the splicing gap from entering ash are achieved.

2. In this application, the mounting bar includes mounting and regulating part, inserts the degree of depth that the strip inserted the mounting insertion groove through adjusting the regulating part, and the adjustable distance of accepting the board to the wall body to the different installation distance's of adaptation wallboard.

Drawings

FIG. 1 is a schematic view of an installation of a right angle closing-in assembly for a concavo-convex background wall;

FIG. 2 is an exploded view of a right angle closing-in assembly for a raised and recessed wall;

FIG. 3 is an enlarged view at A in FIG. 2;

in the figure: the installation strip 1, the insertion groove 111, the bottom plate 112, the first side plate 113, the second side plate 114, the reinforcing plate 115, the insertion strip 121, the receiving plate 122, the stopping bump 123, the closing-up frame 2, the side plate 21 and the wall plate 3.

Detailed Description

The following are embodiments of the present invention and the accompanying drawings are used to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

A right angle closing-in assembly for a concavo-convex background wall, as shown in fig. 1 and 2, includes a wall panel 3, and a coupling structure for mounting the wall panel 3 to an original wall body.

Wallboard 3 divide into main wallboard and time wallboard, and main wallboard and time wallboard are parallel to each other, and main wallboard is as main TV background board, is equipped with the TV mounting hole. In order to avoid the material waste, the poor scheduling problem of cutting precision that traditional cutting pore-forming technology brought, the main wall board is formed by a plurality of minute boards concatenations, specifically, the main wall board includes a plurality of boards of dividing, a plurality of boards of dividing down and two receipts sideboard, divides the board, divides down and forms the TV mounting hole between the two receipts sideboard on going up. The secondary wallboard is used as a decorative board, does not need to be perforated, can directly adopt a whole large board, and can also be formed by splicing a plurality of sub-boards. In actual decoration, the tv is usually installed in the center, so the concave-convex background wall includes a main wall board and two sub wall boards respectively installed on two sides of the main wall board. Considering the thickness of the television and the occupied area of the background wall board, the main wall board is far away from the wall body relative to the secondary wall board, so that the main wall board and the secondary wall board form a concave-convex structure together. The secondary wall panels are typically installed against the wall and the primary wall panels are installed to the wall via support assemblies. Meanwhile, because the main wall board and the secondary wall board are not on the same plane, a gap exists between the main wall board and the secondary wall board, and therefore a side sealing board is usually designed between the main wall board and the secondary wall board to close the gap.

In this application, because last minute board of main wall board, divide down and two receive and form the TV installing port between the sideboard, in order to accept and to divide the board to last, divide the concatenation department of board and two receipts sideboard down to last minute board, this application designs corresponding right angle binding off subassembly.

As shown in fig. 2, the right-angle closing-in assembly includes four mounting bars 1 and a closing-in frame 2, the four mounting bars 1 are all fixedly connected with the wall body, and the four mounting bars 1 are spliced to form a rectangular frame. The binding off frame 2 is formed by four sideboard 21 end-to-end connection, and binding off frame 2 direct card inserts in the rectangle frame for the sideboard 21 of binding off frame 2 and the medial surface (the side that is close to in the rectangle frame) butt of installing strip 1. The main wall board is distributed outside the rectangular frame, the end surface of the main wall board is abutted with the outer side surface (the side surface far away from the inside of the rectangular frame) of the mounting strip 1, namely, the upper sub-board in the main wall board is positioned above the rectangular frame, and the lower end surface of the main wall board is abutted with the mounting strip 1 above; the lower sub-plate in the main wall plate is positioned below the rectangular frame, and the upper end surface of the lower sub-plate is abutted against the outer side surface of the lower mounting bar 1; two edge plates in the main wall plate are respectively positioned at two sides of the rectangular frame, and the side end faces of the two edge plates are abutted with the outer side faces of the mounting bar 1.

In order to ensure the integrity of the background wall when installed, the front surface of the main wall panel (hereinafter, the surface of each member far from the wall is referred to as the front surface, and correspondingly, the surface close to the wall is referred to as the back surface) is preferably flush with the front surface of the installation bar 1. Of course, the end of the main wall board can be additionally provided with an extension board which is thinner than the main wall board, and the front surface of the extension board is flush with the front surface of the main wall board, and the back surface of the extension board is in front butt joint with the mounting bar, so that the purpose of covering the mounting bar 1 is achieved.

Considering that in the concave-convex background wall, in order to adapt to televisions with different thicknesses, the distance from the main wall board to the wall body needs to be adjustable, and the main wall board and the wall body are connected by adopting an adjustable supporting component. In order to adapt to main wall boards with different distances, the width of the mounting bar 1 (hereinafter, the direction perpendicular to the wall is referred to as the width direction) is also designed to be adjustable correspondingly in the present embodiment. As shown in fig. 3, the mounting bar 1 includes a fixing member and an adjusting member.

The fixing member includes a bottom plate 112 connected to the wall, a first side plate 113 connected to the bottom plate 112 in a non-parallel manner, and a second side plate 114 connected to the bottom plate 112 in a non-parallel manner, and an insertion slot 111 is formed between the bottom plate 112, the first side plate 113, and the second side plate 114. The bottom plate 112, the first side plate 113 and the second side plate 114 are integrally formed, and the bottom plate 112, the first side plate 113 and the second side plate 114 are preferably hollow and provided with support plates, so that the strength is ensured, and meanwhile, the material cost is reduced. Bottom plate 112 can be through arbitrary mode and wall connection, in this application, bottom plate 112 is including gluing connecting portion and nail connecting portion, glue connecting portion and above-mentioned first curb plate 113, second curb plate 114 forms above-mentioned insertion groove 111, the one side that glue connecting portion are close to the wall body is equipped with glues the groove, be used for filling the gluing agent so that bottom plate 112 and wall body splice, and through connecting screw connection between nail connecting portion and the wall body, in order to improve connecting screw connection's intensity, preferably set up a gusset plate 115 in hollow nail connecting portion, gusset plate 115 as long as with the wall body non-perpendicular can, when connecting screw is fixed, connecting screw passes the front bezel that nail connecting portion kept away from the wall body in proper order, gusset plate 115, insert the wall body behind the backplate that nail connecting portion is close to the wall body. The joint of the reinforcing plate 115 and the connecting screw is a reinforcing portion through which the connecting screw passes.

In cooperation with the insertion groove 111, the adjusting member includes an insertion bar 121, and as long as the insertion bar 121 can be inserted into the insertion groove 111 in a direction non-parallel to the wall body, the distance from the main wall panel to the wall body can be adjusted. In order to increase the contact area between the insertion strip 121 and the insertion groove 111 and to improve the connection strength therebetween, it is preferable that the insertion strip 121 is a straight plate, and correspondingly, the first side plate 113 and the second side plate 114 of the fixing member are arranged in parallel. Meanwhile, in consideration of convenience of adjustment, the insertion strip 121 is inserted into the insertion groove 111 in a direction perpendicular to the wall, so that the first side plate 113 and the second side plate 114 of the fixing member are both perpendicularly connected with the bottom plate 112.

In this case, the width of the entire mounting bar 1 can be adjusted by adjusting the depth of the insertion bar 121 inserted into the insertion groove 111. Of course, the fixing member and the adjusting member are connected in an inserting manner, which has a problem of low connection strength, and therefore, the fixing member further includes a fixing screw, and after the depth of the adjusting member inserted into the fixing member is adjusted, the fixing screw sequentially penetrates through the first side plate 113, the first insertion strip 121, and the second side plate 114. Meanwhile, in order to prevent the adjusting piece with the adjusted insertion depth from moving due to external force, friction grains are arranged on the inner wall of the insertion groove 111 or/and the outer wall of the insertion strip 121, the friction grains can be concave-convex grains, and friction force between the inner wall of the insertion groove 111 and the insertion strip 121 can be improved.

When the main wall panel and the closing frame 2 are installed, the main wall panel and the side panel 21 may abut against the inner and outer sides of the portion of the insertion strip 121 located outside the insertion groove 111, respectively, but if the depth of the insertion strip 121 inserted into the insertion groove 111 is too deep and the width of the portion located outside the insertion groove 111 is small, the front surface of the main wall panel may protrude from the front surface of the insertion strip 121 after the main wall panel abuts against the front surface of the main wall panel, and it is not possible to ensure the flush of the main wall panel and the installation strip 1. The adjustment element therefore also comprises a receiving plate 122 connected to the insertion strip 121; the receiving plate 122 is parallel to the wall, the outer side surface of the receiving plate 122 abuts against the end surface of the main wall plate, and the inner side surface abuts against the side plate 21 of the closing-up frame 2.

In this embodiment, the first side plate 113 of the fixing member is close to the inside of the rectangular frame, and the second side plate 114 is far from the inside of the rectangular frame. Considering that the width of the edge plate 21 of the closing-up frame 2 is generally large, the outer side surface of the first side plate 113 is arranged to be flush with the outer side surface of the receiving plate 122, so that the edge plate 21 abuts against both the receiving plate 122 and the first side plate 113, and the fixing strength of the mounting strip 1 to the closing-up frame 2 is improved.

In addition, in order to further enhance the contact strength between the adjusting member and the main wall plate, a stop protrusion 123 is provided on the outer side surface of the receiving plate 122, and the stop protrusion 123 is in contact with the back surface of the wall plate. Taking the upper board in the main wall board as an example, if there is no stopping protrusion 123, the left and right ends of the upper board are connected to the wall through the supporting component, and the lower end of the upper board abuts against the receiving plate 122, at this time, if the lower end of the lower board is subjected to a force towards the wall, the lower end of the lower board is easily rotated towards the wall, which affects the level of the background wall, and the stopping protrusion 123 effectively stops the moving trend of the lower board.

In addition, in the concave-convex background wall, the wall attaching component for attaching the secondary wall board to the wall comprises an edge-closing mounting piece, the edge-closing mounting piece comprises a connecting plate connected with the wall body, and the connecting plate is fixedly connected with the wall body through screws, so that a screw groove for accommodating a screw head can be further formed in the connecting plate; receive limit installed part simultaneously still include and insert the board through the time that extends the board and be connected with the connecting plate, based on this structure, set up at the tip of inferior wallboard and can supply time to insert board male inferior recess, can install inferior wallboard to the wall body through receiving the limit installed part. The setting of considering the connecting plate can make and have the gap between inferior wallboard and the wall body, the mid portion of inferior wallboard can not obtain the support, thereby receive the external force easily and cave in, consequently be equipped with the half recess that can hold the connecting plate in the one side that inferior wallboard is close to the wall body, after inferior wallboard is pegged graft with receipts limit installed part, the connecting plate of receipts limit installed part just in time inserts half recess, make inferior wallboard back and connecting plate back parallel and level, make inferior wallboard can paste the wall, in order to obtain the support of wall body. Generally, the bottom end of the secondary wallboard is directly abutted to the ground, so that only secondary grooves are formed in the left end and the right end of the secondary wallboard, and the secondary grooves are mounted on a wall body through the edge-folding mounting pieces respectively. If the secondary wallboard needs to be hung and installed, a corresponding secondary groove can be formed in the bottom end of the secondary wallboard at the moment, and the secondary wallboard is installed on the wall body through the edge-closing installation piece. In addition, since the wall is usually not completely flat, the connecting plate can be connected to the wall by leveling elements. The leveling piece comprises a plurality of keels and adjusting screws for connecting the keels and the wall body. The keel is preferably a keel with a smaller thickness; the adjusting screw is identical to a common screw and comprises a head part and a screw rod part for being screwed into a wall body, but in the application, the head part of the adjusting screw is provided with an external thread. In cooperation with the adjusting screw, the keel is at least provided with two thread adjusting holes which can be connected with the adjusting screw along the length direction of the keel, for example, the two ends of the keel are respectively provided with the thread adjusting holes; the threaded adjusting hole comprises a through hole part for the screw rod part to pass through and an internal thread part which can be in threaded connection with the head part. During the use, pass through internal thread portion with fossil fragments and adjusting screw and realize being connected the back with the head, nail the wall body with adjusting screw protrusion in the screw rod portion part at the fossil fragments back again, the degree of depth of nailing the wall body through the adjusting screw at adjustment fossil fragments both ends can realize making level. And then connecting the connecting plate to the keel through a common screw. At this moment, based on the structure of above-mentioned inferior wallboard half recess, inferior wallboard back and fossil fragments butt to provide the support through fossil fragments.

And after the secondary wallboard is mounted against the wall, the main wallboard is mounted through the supporting component. According to the difference of TV thickness, the distance of main wallboard to the wall body usually needs the corresponding adjustment, and supporting component includes the first mounting of being connected with the wall body and the first regulating part of being connected with main wallboard. The structures of the first fixing piece and the first inserting strip are basically the same as the structure of the right-angle closing-in, the first fixing piece is provided with a first inserting groove, and the first adjusting piece comprises the first inserting strip. The first adjusting piece further comprises a main inserting plate which is connected with the first inserting strip and parallel to the wall body, the first adjusting piece is T-shaped, and a main groove for the main inserting plate to insert is formed in the end portion of the main wall plate. When the adjusting device is used, the two ends of the upper sub plate and the lower sub plate are respectively provided with a main groove, and the main grooves at the two ends of the sub plates are respectively spliced with the main insertion plates of the two first adjusting pieces. The edge folding plate is only required to be provided with a main groove at one end and be inserted into the main insertion plate in an inserting mode, the other end of the edge folding plate can be fixed in any other mode, for example, a side plate is vertically connected to the free end of the edge folding plate, the main groove at the end of the edge folding plate is inserted into the main insertion plate in an inserting mode during installation, at the moment, a stopping block is additionally arranged on the wall body, and the side plate of the edge folding plate is enabled to be abutted to the left side face of the stopping block. The stop block can refer to the structure of the support assembly, also comprises a fixed piece and an insertion strip, and is different from the structure that the insertion strip is connected with a stop plate, a side plate of the edge closing plate is abutted against the side end face of the stop plate, and meanwhile, the stop plate can also be used as a mounting base of a lamp. In addition, can also utilize the side seal board, with the one end of side seal board with receive the sideboard butt, the other end and 2 butts of secondary plate, the side seal board has not only given and has received the sideboard supporting role, has also played the effect of hiding the supporting component between minute board and the wall body moreover. In this embodiment, the stopper block and the side sealing plate are used in combination, and the side sealing plate abuts against the stopper block. Because in this application, in order to guarantee to support intensity, first inserting strip designs thickly, if directly insert the board with first inserting strip with main and be connected, can make between two minute boards, divide the board and receive the great gap that exists between the board. Therefore, in this embodiment, the first adjusting member further includes a slit plate having a smaller width, the slit plate being parallel to the first insertion strip, one end of the slit plate being connected to the first insertion strip, and the other end of the slit plate being vertically connected to the main insertion plate. After the main wallboard is installed in the mode, the problems that the middle parts of the upper and lower dividing plates and the edge folding plate are not supported and are easy to stress and collapse exist. Therefore, in this embodiment, the supporting assembly further includes a leveling member, the leveling member includes a plurality of substrates, the substrates are disposed between two adjacent first adjusting members, and the substrates are abutted to the main wall plate to provide support through the substrates. The base plate can be connected to the first adjusting part in any manner, preferably fixedly. In this embodiment, in order to facilitate the connection of the substrate, the first adjusting member further includes a supporting plate, the supporting plate is disposed between the first insertion strip and the seam plate, and the supporting plate is disposed perpendicular to the first insertion strip. When the substrate is installed, the end part of the substrate is overlapped with the supporting plate and then fixed through a screw. The supporting plate is also preferably made of a thicker hollow plate material so as to improve the fixing effect on the base plate. Considering that the first insert strip and the support plate both require thick plates and the seam plate and the main insert plate both require thin plates, it is preferable to integrally form the first insert strip and the support plate, integrally form the seam plate and the main insert plate, and then connect the seam plate and the support plate. At this time, considering the connection problem between the two, the fixing plate parallel to the main insertion plate is connected to the seam plate, so that the fixing plate, the seam plate and the main insertion plate form an I-shaped member.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a right angle binding off subassembly for unsmooth wall, unsmooth wall includes a plurality of wallboards (3), its characterized in that: the right-angle closing-up assembly comprises four mounting strips (1) and a closing-up frame (2), the four mounting strips (1) are fixedly connected with a wall body, the four mounting strips (1) are spliced to form a rectangular frame, the closing-up frame (2) is arranged in the rectangular frame, and the wallboard (3) is arranged outside the rectangular frame; binding off frame (2) are formed by four sideboard (21) end to end connection, the one end of mounting bar (1) with the terminal surface butt of wallboard (3), the other end with sideboard (21) butt of binding off frame (2).

2. A right angle shut-off assembly for a raised and recessed wall as defined in claim 1, wherein: the mounting bar (1) comprises a fixing piece and an adjusting piece, the fixing piece is fixedly connected with a wall body and is provided with an insertion groove (111), and the adjusting piece comprises an insertion bar (121) which is inserted into the insertion groove (111) along a direction which is not parallel to the wall body and a bearing plate (122) which is connected with the insertion bar (121); the bearing plate (122) is parallel to the wall body, one end of the bearing plate (122) is abutted against the end face of the wall plate (3), and the other end of the bearing plate is abutted against the side plate (21) of the closing-up frame (2).

3. A right-angle necking-in assembly for a concave-convex background wall according to claim 2, wherein: the insertion strip (121) is inserted into the insertion groove (111) along a direction perpendicular to the wall body.

4. A right-angle necking-in assembly for a concave-convex background wall according to claim 2, wherein: friction grains are arranged on the inner wall of the insertion groove (111) or/and the outer wall of the insertion strip (121).

5. A right angle shut-off assembly for a raised and recessed wall as defined in claim 2, wherein: the fixing piece comprises a bottom plate (112) connected with a wall body, a first side plate (113) connected with the bottom plate (112) in a non-parallel mode, and a second side plate (114) connected with the bottom plate (112) in a non-parallel mode, and the insertion groove (111) is formed among the bottom plate (112), the first side plate (113) and the second side plate (114); the outer side face, far away from the insertion groove (111), of the first side plate (113) is flush with the end face of the bearing plate (122).

6. A right angle shut-off assembly for a raised and recessed wall as defined in claim 2, wherein: one end of the bearing plate (122) abutted against the wallboard is provided with a stop lug (123), and the stop lug (123) is abutted against one surface of the wallboard close to the wall body.

7. The right-angle necking-in assembly for the concave-convex background wall according to claim 5, wherein: the fixing device also comprises a fixing screw for connecting the first side plate (113), the insertion strip (121) and the second side plate (114).

8. The right-angle necking-in assembly for the concave-convex background wall according to claim 5, wherein: the first side plate (113), the second side plate (114) and the insertion strip (121) are all hollow inside.

9. A right-angle necking-in assembly for a concave-convex background wall according to claim 5, wherein: the bottom plate (112) comprises a glue connecting part which is glued with the wall body and a nail connecting part which is connected with the wall body through a connecting screw.

10. A right angle shut-off assembly for a raised and recessed wall as defined in claim 9, wherein: the nail connecting part is hollow and provided with a reinforcing plate (115), and the reinforcing plate (115) comprises a reinforcing part for the connecting screw to pass through.