CN114892920A - Edge-covering section bar for assembly type background wall and installation method - Google Patents

Abstract

The utility model relates to a decorate building materials technical field, provide a section bar of borduring and installation method for assembled wall, this section bar of borduring is constructed as the strip structure that is formed by the panel bending, and this section bar of borduring has first recess and the second recess that extends along the length direction of this strip structure's section bar of borduring, the groove lateral wall height inconsistent of this first recess both sides, the groove lateral wall of this first recess lower side and the groove lateral wall of this second recess one side lean on each other mutually, and the notch opposite direction of this first recess and this second recess. The utility model discloses make the dull and stereotyped decoration base material board of the decoration convex part of wall and assembled wall can insert respectively in first recess and the second recess and realize closing up, so not only the adaptation degree of the section bar of borduring and decoration base material board is very high, makes the receipts limit seem natural pleasing to the eye to the section bar of borduring is also very convenient and simple at the dull and stereotyped installation of wall and decoration convex part.

Description

Edge-covering section bar for assembly type background wall and installation method

Technical Field

The disclosure relates to the technical field of decorative building materials, in particular to a wrapping section bar for an assembled background wall and an installation method.

Background

The assembly type background wall is formed by assembling prefabricated panels such as wallboards and roof boards, is not attractive in appearance in modern home decoration, and can effectively improve decoration efficiency, so that the assembly type background wall is very popular at present. However, in practical application, there is not a plane between the modeling portion of the general assembly type background wall and the wall surface flat plate, which makes the connection between the modeling portion of the assembly type background wall and the wall surface flat plate complicated, and has the problem of difficult installation.

BRIEF SUMMARY OF THE PRESENT DISCLOSURE

The invention aims to provide a wrapping section bar for an assembly type background wall and an installation method, and aims to solve the technical problem that in the prior art, connection between a modeling part of the assembly type background wall and a wall surface flat plate is complex.

In order to achieve the purpose, the technical scheme adopted by the disclosure is as follows:

in a first aspect, the present disclosure provides a hemming section for an assembly type background wall, the hemming section is configured as a strip-shaped structure formed by bending a plate, the hemming section has a first groove and a second groove extending along the length direction of the hemming section with the strip-shaped structure, the heights of groove side walls on two sides of the first groove are different, the groove side wall on the lower side of the first groove and the groove side wall on one side of the second groove are mutually close to each other, and the directions of notches of the first groove and the second groove are opposite.

In one embodiment, according to the hemming section provided by the present disclosure, the top of the groove sidewall of the other side of the second groove has a decoration surface extending to one side of the second groove, and the decoration surface is perpendicular to the groove sidewall.

In one embodiment, according to the edge-covered section provided by the present disclosure, the edge of the decorative surface has a turning surface extending toward the groove bottom wall of the second groove, and the turning surface is perpendicular to the decorative surface.

In one embodiment, according to the edge-covered section bar provided by the disclosure, a groove side wall on the higher side of the first groove is provided with a third groove which is concave outwards, and a groove bottom wall of the third groove is provided with a nail groove for mounting a screw.

In one embodiment, according to the edge-covering section bar provided by the disclosure, the outer surfaces of the bottom and the top of the groove side wall on the higher side of the first groove are respectively provided with a convex supporting foot.

In one embodiment, according to the hemming section provided by the disclosure, the bottom surface of the supporting leg is flush with the outer surface of the groove bottom wall of the third groove.

In one embodiment, according to the hemming section provided by the present disclosure, the surface of the groove bottom wall of the second groove is a serrated surface.

In one embodiment, according to the hemming section provided by the present disclosure, the groove sidewalls at both sides of the second groove have the same height.

In one embodiment, a hemmed profile is provided in accordance with the present disclosure, with the pocket surface of the second groove being flush with the outer surface of the pocket bottom wall of the first groove.

In one embodiment, according to the hemming section provided by the present disclosure, the outer surface of the groove bottom wall of the second groove and the outer surface of the groove side wall of the second groove are both flat surfaces.

In a second aspect, the present disclosure also provides an installation method for the above-mentioned edge-covering section bar, including the following steps:

the first step is as follows: fixing the plastic expansion pipe in the structural wall, and screwing the plastic expansion pipe into the leveling keel through a leveling screw so as to realize the connection fixation and leveling of the leveling keel and the structural wall;

the second step is that: fixing the cement pressure lining plate with the leveling keel through a self-tapping screw at the position of the decorative convex part of the mounting assembly type background wall;

the third step: then fixing the first decorative base material plate with the cement pressure lining plate through structural adhesive;

the fourth step: aligning a second groove of the edge-covered section bar to the edges of the cement pressure lining plate and the first decorative base material plate, meanwhile, screwing the edge-covered section bar into the leveling keel on the nail groove through a self-tapping screw at the position of installing the wall surface flat plate so as to realize the connection and fixation of the edge-covered section bar and the leveling keel, and then inserting the second decorative base material plate into the first groove of the edge-covered section bar for clamping firmly;

the fifth step: and finally, installing skirting lines on the outer sides of the first decorative base material plate and the second decorative base material plate respectively.

The beneficial effect that a section bar of borduring for assembled wall that this disclosure provided lies in at least: the edge covering section is constructed into a strip-shaped structure formed by bending plates, the edge covering section is provided with a first groove and a second groove which extend along the length direction of the edge covering section with the strip-shaped structure, the heights of the groove side walls on two sides of the first groove are inconsistent, the groove side wall on one side of the first groove and the groove side wall on one side of the second groove are mutually close to each other, and the directions of the notches of the first groove and the second groove are opposite, so that the decorative base material plate of the decorative convex part of the wall panel and the assembly type background wall can be respectively inserted into the first groove and the second groove to realize closing up, the adaptation degree of the edge covering section and the decorative base material plate is very high, the edge closing is natural and attractive, and the installation of the edge covering section on the wall panel and the decorative convex part is very convenient and simple.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a perspective view of a section bar for covering edge of an assembled background wall provided in an embodiment of the present disclosure;

fig. 2 is a perspective structural view of a section bar for covering edge of an assembled background wall provided by the embodiment of the disclosure at the other side;

fig. 3 is a sectional structure view of a covering section bar for an assembled background wall according to an embodiment of the present disclosure;

fig. 4 is a schematic view of a mounting structure of a covered section bar for a fabricated background wall on a wall according to an embodiment of the present disclosure.

Wherein, in the figures, the respective reference numerals:

01	edge-covering section bar	16	Nail groove
				11	The first groove	17	Supporting foot
111	Bottom wall of the first groove	02	Plastic expansion pipe
				112	Groove side wall at lower side of first groove	03	Structural wall
113	Groove side wall at higher side of first groove	04	Leveling screw
				12	Second groove	05	Leveling keel
121	Bottom wall of the second groove	06	Cement pressure lining board
				122	Groove side wall at one side of the second groove	71	First decorative base material board
123	Groove side wall at the other side of the second groove	72	Second decorative substrate board
				13	Decorative cover	08	Self-tapping screw
14	Turning noodles	09	Skirting line
				15	Third groove

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present disclosure more clearly understood, the present disclosure is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the disclosure and are not intended to limit the disclosure.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.

Referring to fig. 1-3, the present embodiment provides a border section 01 for an assembly type background wall, the border section 01 is configured as a strip structure formed by bending a plate, the border section 01 has a first groove 11 and a second groove 12 extending along a length direction of the border section 01, groove sidewalls (i.e., groove sidewalls 112 and 113 in fig. 3) at two sides of the first groove 11 are different in height, the groove sidewall 112 at a lower side of the first groove and the groove sidewall 122 at a side of the second groove are abutted against each other, and directions of notches of the first groove 11 and the second groove 12 are opposite.

Specifically, as shown in fig. 3, the first groove 11 includes a groove bottom wall and groove side walls, and the heights of the groove side walls on both sides of the first groove 11 are not uniform, wherein the groove side wall 112 on the lower side of the first groove and the groove side wall 113 on the higher side of the first groove are respectively located on both sides of the groove bottom wall 111 of the first groove. Similarly, the second groove 12 includes a groove bottom wall and a groove side wall, and the height of the groove side wall on both sides of the groove side wall 121 of the second groove is the same, wherein the groove side wall 122 on one side of the second groove is juxtaposed to the groove side wall 112 on the lower side of the first groove, that is, the outer surface of the groove side wall 122 on one side of the second groove is the groove side wall 112 on the lower side of the first groove, and similarly, the outer surface of the groove side wall 112 on the lower side of the first groove is the outer surface of the groove side wall 122 on one side of the second groove.

Specifically, as shown in fig. 1 and 2, since the edge-covering section bar 01 has a strip-shaped structure, the first groove 11 and the second groove 12 of the edge-covering section bar 01 can be respectively embedded into the edge of the decorative convex portion of the wall panel and the assembly background wall, so as to perform the closing connection function on the wall panel and the decorative convex portion.

Specifically, as shown in fig. 3, the notch direction of the first groove 11 is exactly opposite to the notch direction of the second groove 12, and in the embodiment of the present disclosure, the notch directions of the first groove 11 and the second groove 12 are different by 180 °. Because the decorative convex part protrudes outwards relative to the wall surface flat plate, the edge parts of the decorative convex part and the wall surface flat plate are staggered, the first groove 11 and the second groove 12 are utilized and lean against the arranged structure, so that the notch of the first groove 11 and the notch of the second groove 12 can be respectively aligned to the wall surface flat plate and the decorative convex part, the wall surface flat plate and the decorative convex part are bound on the same binding section bar 01, and the binding connection between the wall surface flat plate and the decorative convex part is more concise and attractive.

According to the technical scheme provided by the embodiment of the disclosure, the edge covering section bar 01 is constructed into a strip-shaped structure formed by bending a plate, the edge covering section bar 01 is provided with a first groove 11 and a second groove 12 which extend along the length direction of the edge covering section bar 01 with the strip-shaped structure, the heights of the groove side walls at two sides of the first groove 11 are different, the groove side wall 112 at the lower side of the first groove and the groove side wall 122 at one side of the second groove are mutually close to each other, and the direction of the notches of the first groove 11 and the second groove 12 is opposite, so that the decorative base material plates of the decorative convex parts of the wall surface flat plate and the assembly background wall can be respectively inserted into the first groove 11 and the second groove 12 to realize closing-up, therefore, the adaptability of the edge covering section bar 01 and the decorative base material plate is very high, the edge covering looks natural and beautiful, and the installation of the edge covering section bar 01 on the wall surface flat plate and the decorative convex part is very convenient and simple.

In some embodiments, the top of the channel sidewall 123 on the other side of the second channel has a cosmetic surface 13 extending toward one side of the second channel (i.e., the side on which the channel sidewall 122 is located), the cosmetic surface 13 being perpendicular to the channel sidewall 123 on the other side of the second channel.

Specifically, as shown in fig. 1 and 3, the decorative surface 13 is a plane formed by bending the edge-covering section 01 inward at the top of the groove sidewall 123 on the other side of the second groove, and this structure can prevent the edge of the edge-covering section 01 from being exposed outside, and at the same time, the decorative surface 13 can be made of different colors, shapes, patterns or different materials, so as to improve the design and the aesthetic appearance of the background wall.

Next, referring again to fig. 1 and 3, in some embodiments, according to the border profile 01 provided by the present disclosure, the edge of the decorative surface 13 has a turning surface 14 extending in the direction of the groove bottom wall 121 of the second groove, the turning surface 14 being perpendicular to the decorative surface 13.

Specifically, as shown in fig. 1, the turning surface 14 is a plane extending from the edge of the decorative surface 13 to the groove bottom wall 121 of the second groove, and it is equivalent to the turning surface 14 serving as a chamfer on the edge of the decorative surface 13, so as to prevent the edge of the decorative surface 13 from being burred and scratched on the background wall. Meanwhile, the width of the turning surface 14 is larger than the thickness of the edge covering section bar 01, so that the contact area between the turning surface and the decorative convex part can be increased, the edge of the decorative convex part can be more firm when being inserted into the second groove 12 of the edge covering section bar 01, and the edge is not easy to shake.

In some embodiments, as shown in fig. 1 and 3, according to the edge-covering section bar 01 provided by the present disclosure, a groove side wall 113 on the higher side of the first groove is provided with a third groove 15 which is recessed outwards, and a groove bottom wall of the third groove 15 is provided with a nail groove 16 for installing a screw.

Specifically, when the covering section bar 01 is installed, the groove side wall 113 on the higher side of the first groove may be fixed to a wall surface by screws, for example, self-tapping screws, on the nail groove 16, or may be fixedly installed to a leveling keel installed on the wall surface. It can be seen that the nail groove 16 can prevent the screw from moving during installation when the screw is screwed into the wall surface or the leveling keel, and meanwhile, the screw can be conveniently and manually centered for installation.

In addition, after the screw is mounted on the groove sidewall 113 on the higher side of the first groove, the head of the screw is exposed to the outside, and therefore, the head of the screw can be hidden in the third groove 15 by the third groove 15 formed by outwardly recessing the groove sidewall 113 on the higher side of the first groove, thereby ensuring the flatness of the groove sidewall 113 on the higher side of the first groove.

According to the technical scheme provided by the embodiment of the disclosure, the third groove 15 and the nail groove 16 are arranged on the groove side wall 113 on the higher side of the first groove, and the edge covering section bar 01 is fixed on the wall surface or the blending keel arranged on the wall surface by using screws, so that the fixing mode is firmer than the mode of fixing the edge covering section bar 01 by using an adhesive mode, and the edge covering section bar 01 cannot fall off after a long time.

In some embodiments, referring to fig. 3, according to the profile 01 of the present disclosure, the outer surface of the bottom and the top of the groove sidewall 113 on the higher side of the first groove is provided with a convex supporting leg 07.

Specifically, when the groove sidewall 113 on the higher side of the first groove is installed on the wall surface or the leveling keel by using the screw, the foot surface of the supporting leg 17 contacts with the wall surface or the leveling keel, so that the groove sidewall 113 on the higher side of the first groove is prevented from shaking during installation. It follows that the height of the support foot 17 should not be lower than the outer surface of the bottom wall of the third recess 15. For example, in some embodiments of the present disclosure, the bottom surface of the support foot 17 is flush with the outer surface of the bottom wall of the third groove 15. Therefore, the outer surface of the groove side wall 113 on the higher side of the first groove can be flatly attached to the wall surface or a leveling keel, so that the whole edge covering sectional material 01 is not easy to shake when a screw is installed, and the operation of installing the edge covering sectional material 01 is simpler.

In some embodiments, as shown in fig. 2 and 3, according to the covered edge profile 01 provided by the present disclosure, the surface of the groove bottom wall 121 of the second groove is a serrated surface.

Specifically, the serrated surface may be a grid-shaped concave-convex surface, or may be a concave-convex surface extending in the same direction, for example, in the embodiment of the present disclosure, as shown in fig. 2 and 3, the serrated surface is a plurality of tooth grooves extending in the longitudinal direction of the binding section 01, and the plurality of tooth grooves are arranged in parallel.

According to the technical scheme provided by the embodiment of the disclosure, the sawtooth surface can be used as a reserved gluing position, and in some application scenes needing further reinforcement, the sawtooth surface can be connected with the decorative convex part of the assembly type background wall after being glued, so that the edge-covering section bar 01 is assisted and fixed.

In some embodiments, in conjunction with the section bar 01 of fig. 3, the groove sidewalls on both sides of the second groove 12 (i.e., the groove sidewall 122 on one side of the second groove and the groove sidewall 123 on the other side of the second groove in fig. 3) are of uniform height according to the present disclosure.

Specifically, the height of the groove side walls on both sides of the second groove 12 refers to the vertical height of the wall surface, and in practical applications, the groove side walls on both sides of the second groove 12 are not necessarily uniform. For example, in the above embodiment in which the decorative surface 13 and the turn-back surface 14 are provided on the top of the groove side wall 123 on the other side of the second groove, the heights of the groove side walls on both sides of the second groove are not uniform; in the embodiment that the decorative surface 13 and the turning surface 14 are not arranged on the top of the groove side wall 123 on the other side of the second groove, the heights of the groove side walls on the two sides of the second groove 12 can be set to be consistent, so that the material cost of the edge covering section 01 can be reduced under the condition that the installation requirement is met.

In some embodiments, as shown in fig. 3, with a hem profile 01 provided according to the present disclosure, the notch surface of the second groove 12 is flush with the outer surface of the groove bottom wall 111 of the first groove.

Specifically, the groove side walls on both sides of the first groove 11 are perpendicular to the groove bottom wall 111, and the groove side walls on both sides of the second groove 12 are also perpendicular to the groove bottom wall, and since the first groove 11 and the second groove 12 are juxtaposed, as shown in fig. 1, the top of the groove side wall 122 on the second groove side is also part of the outer surface of the groove bottom wall 121 of the second groove. Thus, in the above embodiment in which the decorative face 13 and the folded face 14 are provided on the top of the groove side wall 123 on the other side of the second groove, the notch surface of the second groove 12, that is, the decorative face 13 and the top of the groove side wall 122 on the one side of the second groove, are on the same plane, and the notch surface of the second groove 12 is flush with the outer surface of the groove bottom wall 111 of the first groove, as shown in fig. 3, that is, the decorative face 13 on the outer surface of the groove bottom wall 111 of the first groove, the top of the groove side wall 122 on the one side of the second groove, and the top of the groove side wall 123 on the other side of the second groove are on the same plane.

In some embodiments, and as shown in fig. 1 and 3 in conjunction with the hemmed profile 01 provided by the present disclosure, the outer surfaces of the channel bottom wall 121 of the second groove and the channel side wall 123 on the other side of the second groove are both planar.

Specifically, after the edge-covering section bar 01 is installed, the outer surfaces of the groove bottom wall 121 of the second groove and the groove side wall 123 on the other side of the second groove are exposed outside, so that the outer surfaces of the groove bottom wall 121 of the second groove and the groove side wall 123 on the other side of the second groove are arranged to be flat, so that the appearance is more concise and attractive. Of course, in practice, the outer surfaces of the groove bottom wall 121 of the second groove and the groove side wall 123 on the other side of the second groove may be provided with other shapes, or patterns, colors, etc. may be provided on the outer surfaces, which is not limited by the embodiment of the disclosure.

In addition, in practical application, the edge covering section bar 01 provided by the disclosure can be respectively matched with the decorative convex part of the assembly type background wall and the wall surface flat plate, so that the decorative convex part of the assembly type background wall is connected with the closed end of the wall surface flat plate. Therefore, referring to fig. 4, in some embodiments, there is further provided an installation method of the hemming section 01, which includes the following specific installation steps:

the first step is as follows: firstly fixing the plastic expansion pipe 02 in the structural wall 03, and then screwing the plastic expansion pipe 02 into the leveling keel 05 through a leveling screw 04 to realize the connection fixation and leveling of the leveling keel 05 and the structural wall 03;

the second step is that: in the position of installing the decorative convex part of the assembled background wall, the cement pressure lining plate 06 is fixed with the leveling keel 05 through a self-tapping screw (not shown in figure 4);

the third step: then fixing the first decorative base material plate 71 with a cement pressure lining plate 06 through structural adhesive;

the fourth step: aligning a second groove 12 of the edge-covering section bar 01 to the edges of the cement pressure lining plate 06 and the first decorative base material plate 71, meanwhile, screwing the edge-covering section bar 01 into a leveling keel 05 on a nail groove 16 through a self-tapping screw 08 at the position of a wall surface flat plate so as to realize the connection and fixation of the edge-covering section bar 01 and the leveling keel 05, and then inserting a second decorative base material plate 72 into a first groove 11 of the edge-covering section bar 01 for clamping firmly;

the fifth step: finally, skirting lines are respectively installed on the outer sides of the first and second decorative base material plates 71 and 72.

Specifically, the number of the leveling keels 05 fixedly connected to the structural wall 03 may be multiple, and in order to achieve the leveling effect, the distance between each leveling keel 05 and the structural wall 03 and the installation position of each leveling keel 05 may be different and the same. For example, as shown in fig. 4, one leveling keel 05 at the location of the installation wall panel (i.e., the location to the left of the border section in fig. 4) is closer to the structural wall 03, while the other leveling keel 05 at the location of the decorative boss portion of the installation wall (i.e., the location to the right of the border section in fig. 4) is farther from the structural wall 03.

Specifically, the end of the side surface of the second decorative substrate plate 72 inserted into the first groove 11 may be cut, and the end of the side surface of the first decorative substrate plate 71 inserted into the second groove 12 may abut against the bottom wall 121 of the second groove, or may be indirect with the bottom wall 121 of the second groove, so that the wear rate of the decorative substrate plate may be effectively reduced. For example, structural adhesive may be applied to the groove bottom wall 121 (e.g., serrated surface) of the second groove, and then the edge surfaces of the cement pressure lining plate 06 and the first decorative base material plate 71 are fixed to the groove bottom wall 121 of the second groove by gluing, so that the fixing between the edge-covering section 01 and the cement pressure lining plate 06 and the first decorative base material plate 71 is firmer.

Further, in order to improve the aesthetic appearance of the decoration, a decoration surface is generally attached to the surfaces of the first decoration substrate plate 71 and the second decoration substrate plate 72, and the decoration surface may be various colors and/or patterns, and the like, which is not limited by the embodiment of the disclosure.

In addition, after the second groove 12 on the edge covering section 01 is aligned with the edge surfaces of the cement pressure lining plate 06 and the first decorative base material plate 71, the fixing of the edge covering section 01 on the leveling keel 05 is realized by screwing the leveling keel 05 into the nail groove 16 through the self-tapping screw 08, so that the first decorative base material plate 71 can be pressed by the turning surface 14, the exposure of wallboard burrs is prevented from being exposed, and the edge folding is natural and attractive.

According to the installation method of the edge-covering section bar provided by the embodiment of the disclosure, the edge-covering of the wall surface flat plate and the decorative convex part of the decorative wall surface by using the edge-covering section bar is convenient and fast to install, the loss rate is low, the overall adaptive degree is high after installation, and the lines are more attractive; in addition, the turning surface 14 of the edge covering section bar 01 can press the decorative base material plate, so that the burrs of the wall plate are prevented from being exposed, and the edge covering is natural and attractive.

The present disclosure is to be considered as limited only by the preferred embodiments and not limited to the specific embodiments described herein, and all changes, equivalents and modifications that come within the spirit and scope of the disclosure are desired to be protected.

Claims (11)

1. The utility model provides a section bar of borduring for assembled wall which characterized in that: the edge-covering section is of a strip-shaped structure formed by bending a plate;

the edge covering section bar is provided with a first groove and a second groove which extend along the length direction of the edge covering section bar with the strip-shaped structure, the heights of the groove side walls on the two sides of the first groove are different, the groove side wall on the lower side of the first groove and the groove side wall on one side of the second groove are mutually close to each other, and the directions of the notches of the first groove and the second groove are opposite.

2. A border section as claimed in claim 1 wherein the top of the channel side wall on the other side of the second groove has a decorative surface extending towards one side of the second groove, the decorative surface being perpendicular to the channel side wall.

3. A border strip according to claim 2, wherein the edge of the decorative surface has a return surface extending in the direction of the groove bottom wall of the second groove, the return surface being perpendicular to the decorative surface.

4. A covered edge profile according to claim 1, wherein a groove side wall on the higher side of the first groove is provided with a third groove which is concave outwards, and a groove bottom wall of the third groove is provided with a nail groove for mounting a screw.

5. A covered edge profile according to claim 4, wherein the outer surfaces of the bottom and top of the side wall of the slot at the higher side of the first groove are respectively provided with a raised supporting foot.

6. A hemming profile according to claim 5 wherein the foot bottom surface of the support foot is flush with the outer surface of the bottom wall of the third groove.

7. A tipping profile according to any one of claims 1 to 6, wherein the surface of the trough base wall of the second groove is a serrated surface.

8. A tipping profile according to claim 7, characterized in that the height of the groove side walls on both sides of the second groove is uniform.

9. A tipping profile according to claim 8, wherein the rebate surface of the second recess is flush with the outer surface of the slot base wall of the first recess.

10. A border section as claimed in claim 9 wherein the outer surfaces of the channel bottom wall and channel side walls of the second groove are both planar.

11. A method of installing a profiled edge covering for use in a railway vehicle as claimed in any one of claims 1 to 10, comprising the steps of:

the first step is as follows: fixing the plastic expansion pipe in the structural wall, and screwing the plastic expansion pipe into the leveling keel through a leveling screw so as to realize the connection fixation and leveling of the leveling keel and the structural wall;

the second step is that: fixing the cement pressure lining plate with the leveling keel through a self-tapping screw at the position of the decorative convex part of the mounting assembly type background wall;

the third step: then fixing the first decorative base material plate with the cement pressure lining plate through structural adhesive;

the fourth step: aligning a second groove of the edge-covered section bar to the edges of the cement pressure lining plate and the first decorative base material plate, meanwhile, screwing the edge-covered section bar into the leveling keel on the nail groove through a self-tapping screw at the position of installing the wall surface flat plate so as to realize the connection and fixation of the edge-covered section bar and the leveling keel, and then inserting the second decorative base material plate into the first groove of the edge-covered section bar for clamping firmly;

the fifth step: and finally, installing skirting lines on the outer sides of the first decorative base material plate and the second decorative base material plate respectively.

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