KR20220026436A - Architectural Chanel - Google Patents

Abstract

The present invention relates to an architectural channel comprising: a lower fixing channel including a channel body having a "U" shape in a cross section view, a plurality of foldable wings integrally formed at regular intervals in the longitudinal direction of the channel body, and fitting portions integrally formed below the foldable wings to fit and assemble upper fixing channels; and the upper fixing channels coupled to the lower fixing channel in a direction intersecting the lower fixing channel, and having fixing wings integrally formed at lower ends thereof to protrude inward, being fitted into the fitting portions. The upper fixing channels can be easily inserted into the fitting portions formed in the lower fixing channel to be assembled thereto. The upper fixing channels can be easily fixed by bending foldable members formed on the lower fixing channel. The upper fixing channels can be firmly assembled by side contact portions formed on the foldable wings so that the upper fixing channels do not move.

Description

Architectural Channel

The present invention relates to a building channel, and more particularly, to a building channel that can be constructed so that the channels that are cross-constructed can be easily assembled, and the channels are fixed more closely so that the channels do not move with each other.

In general, a ceiling material installation tool is installed so that the ceiling material is covered as a method to prevent the exposure of these to the outside while at the same time providing facilities such as insulation insulation, electrical wiring and piping on the ceiling of a building.

The ceiling material is the lower end of the hanger bolt embedded in the slab, and the hanger coupled to the carrying channel is coupled to the lower part of the carrying channel. It is configured to be coupled by a fastener or screw in the buttted state.

The fixing clip is a combination of the carrying channel and the clip bar or embar facing each other, and the shape of the fixing clip is determined according to the shape of the clip bar or embar.

That is, when a clip bar is used, a wire-type clip in which a wire is bent is used, and when an embar is used, a plate-type clip in which a plate is bent is used.

The wire-type clips are fixedly coupled to each other in a manner that surrounds the carrying channel and the clip bar, and the plate-type is configured to be hooked by forming locking pieces on both sides and inserting them into the locking grooves formed on both ends of the embar.

However, these plate-type clips are easy to use when the carrying channel is thick, but have inconvenient problems such as insufficient strength to use when the thickness is thin. There was another problem in which Embar was separated from the side.

In addition, since the height of the plate-type clip is high, there is another problem in that the space utilization rate of the lower part is relatively low as a lot of space for installing the ceiling material is secured.

And in the state in which the upper both sides of the embar are bent close to 90°, there was another problem in that the working time was delayed due to the cause that the coupling was not easily made in the process of coupling the embar to be fitted to the lower part of the plate-type clip.

For example, in Patent Document 1 below, a 'clip for installing a ceiling material' is disclosed.

형 연장부가 형성된다.The clip for installing a ceiling material according to Patent Document 1 is a clip for installing a ceiling material in which a carrying channel and an embar are coupled to each other, wherein the clip has a carrying channel wrapping member and an embar hanging member on both sides of the carrying channel wrapping member in the horizontal direction. Each is formed to be integrally bent, the carrying channel wrapping member is formed to have a channel shape in which the carrying web part is bent downwardly on both sides of the carrying flange part to have an open lower part, and the embar hanging member is the lower part of the carrying web part Embar flange portion is formed by being bent outwardly in the horizontal direction, respectively, the embedding web portion is bent downwardly on both sides in the longitudinal direction of the Embar flange portion to be integrally formed, and the lower end of the Embar engaging web portion has a hooking piece inside, respectively The web portion is bent upwards from both sides in the longitudinal direction and is bent to the outer lower part again.

A mold extension is formed.

The following Patent Document 2 discloses a 'channel for assembling a support pedestal'.

The channel for assembling a support stand according to the following Patent Document 2 comprises a normal support stand assembly channel formed by bending a steel plate with a number of fastening holes in three stages, a wide support plate and a narrow support plate on both sides around the central support plate. A channel is formed by bending, but a pair of cutouts are configured at equal intervals on the bent side of the central support plate, and a cut mark is configured between the pair of cutouts, so that when cutting the channel, the cut mark is cut based on the cut. , the cutout located in the cut portion is always open on one side, and the width of the wide support plate bent on one side of the central support plate is twice as wide as the width of the narrow support plate bent on the other side, and a wide surface fastening hole is provided on the wide support plate Constructed by drilling in double rows, and in the narrow support plate, drilling a narrow side fastening hole with insulation, but configuring the spacing between the wide side fastening holes and the narrow side fastening holes to be the same, when assembling the channel, each fastening hole coincides configured to be

Korean Patent Publication No. 10-2012-0139165 Republic of Korea Patent Registration No. 10-1040576

It is an object of the present invention to solve the problems described above, and to provide a building channel that can be easily assembled by inserting channels that cross each other and can be firmly fixed so that the cross-assembled channels do not move will be.

Another object of the present invention is to provide a building channel that can be assembled by firmly fixing the upper fixed channel by folding the folding wings of the lower fixed channel after assembling the upper fixed channel in a direction that intersects the upper portion of the lower fixed channel will be.

Another object of the present invention is to provide a building channel that can be assembled so that the upper fixed channel is not separated by forming different lengths of the folding wings of the lower fixed channel according to the fixed width of the upper fixed channel fitted to the lower fixed channel.

In order to achieve the above object, the building channel according to the present invention has a channel body 11 having a 'U' shape in cross section, and a plurality of folds at regular intervals along the length direction of the channel body 11. The wing 14 is integrally formed, the lower fixed channel 10 is integrally formed with the fitting portion (h) to fit the upper fixed channel 30 to the lower portion of the folding wing 14; It is coupled in a direction crossing the lower fixed channel 10, and the upper fixed channel 30 is integrally formed with the fixed wings 31 protruding inward from the lower end so as to be fitted into the fitting part (h). The upper fixed channel 30 is characterized in that the upper fixed channel 30 is closely fixed to the lower fixed channel 10 by bending the folding wings 14 in a state of being inserted into the fitting part (h).

The folding wings 14 may include a pair of folding connecting portions 15 integrally extending from the side plate 13; an inner mouth groove 16 formed as low as a predetermined height from the upper surface 13a of the side plate 13 so that the folding wings 14 can be easily folded; An upper contact surface 17 extending outwardly from the top of the folding connection part 15 so as to be in close contact with the upper surface of the fixed wings 31 of the upper fixed channel 30 in a state in which the folding wings 14 are fitted; A fitting portion (h) formed at a predetermined height from the upper surface (13a) of the side plate (13) to the upper surface adhesion surface (17) so that the fixed wings (31) of the upper fixed channel (30) are fitted; characterized.

The folding wing 14 includes a lower inclined surface 18 extending obliquely outwardly from the upper contact surface 17; a side contact portion 19 protruding to be in close contact with the inner surface of the upper fixed channel 30 so as to stably fix the upper fixed channel 30; an upper inclined surface 20 inclinedly extending inwardly of the side contact portion 19; a first notch hole 21 formed on the inside of the folding blade 14 so that the folding blade 14 can be easily folded, and the side contact part 19 is the upper fixed channel 30 It is characterized in that it is in close contact with the inner surface to fix the upper fixed channel (30).

The side plate 13 includes a lower fixed wing 25 formed to be interposed between the upper fixed channels 30, and the lower fixed wings 25 are the upper fixed channels 30 spaced apart by a predetermined distance. It is interposed between and characterized in that the upper fixed channel (30) is fixed.

The lower fixed wing 25 includes a second notch hole 26 formed in a 'U' shape at the lower portion of the lower fixed wing 25 to facilitate bending; and a third notch hole (27) formed in a straight line on the upper part of the lower fixed blade (25) to facilitate bending of the lower fixed blade (25).

The lower fixed channel 10 has a separation prevention groove 28 formed on the outside of the inner inlet groove 16 to prevent the separation of the upper fixed channel 30; Including, the separation prevention surface 29 is formed to be inclined to the outside of the upper surface contact surface 17 of the folding wing 14 to prevent separation of the upper fixed channel 30; It is characterized in that it is formed to be variable according to the length of the fixed wing 31 of the upper fixed channel (30).

As described above, according to the building channel according to the present invention, the upper fixed channel can be easily assembled by inserting the upper fixed channel into the fitting part formed in the lower fixed channel, and the upper fixed channel can be easily fixed by bending the folding member formed in the lower fixed channel. , the effect that the upper fixed channel can be firmly assembled without moving by the side contact part formed on the folding blade is obtained.

According to the building channel according to the present invention, the lower fixed wings formed in the lower fixed channel are placed between the upper fixed channels spaced apart by a predetermined distance to fix the upper fixed channel more firmly, and the folding wings and the lower fixed wings Each notched hole is formed so that the folding wing and the lower fixed wing can be easily bent even with a small external force, thereby obtaining the effect that the upper fixed channel can be easily assembled.

1 is a front view showing a building channel according to a first preferred embodiment of the present invention;
2 is a three-dimensional view showing an assembled state of the building channel according to the first preferred embodiment of the present invention;
3 is a three-dimensional view showing an assembled state of the building channel according to the first preferred embodiment of the present invention;
4 is a front view showing a building channel according to a second preferred embodiment of the present invention;
5 is a three-dimensional view showing an assembled state of a building channel according to a second preferred embodiment of the present invention;
6 is a three-dimensional view showing an assembled state of a building channel according to a second preferred embodiment of the present invention;
7 is a front view showing a building channel according to a third preferred embodiment of the present invention;
8 is a three-dimensional view showing a building channel according to a third preferred embodiment of the present invention;
9 is a front view showing a state in which a roof tile is installed on a building channel according to a preferred embodiment of the present invention;
10 is a three-dimensional view showing a state in which a roof tile is installed on a building channel according to a preferred embodiment of the present invention;
11 is a three-dimensional view showing a state in which a roof tile is installed in a building channel according to a preferred embodiment of the present invention.

Hereinafter, a building channel according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

A building channel according to a preferred embodiment of the present invention has a channel body 11 having a 'U' shape in cross section, and a plurality of folding wings 14 at regular intervals along the longitudinal direction of the channel body 11 are integrated. The lower fixed channel 10 and the lower fixed channel 10 in which the fitting part (h) is integrally formed so as to be assembled by fitting the upper fixed channel 30 to the lower part of the folding wing 14, and the lower fixed channel 10 It is coupled in the direction to be and includes an upper fixed channel 30 integrally formed with a fixed wing 31 protruding inward from the lower end so as to be fitted into the fitting portion (h).

<First embodiment>

Figure 1 is a front view showing a building channel according to a first preferred embodiment of the present invention, Figure 2 is a three-dimensional view showing an assembled state of the building channel according to the first preferred embodiment of the present invention, Figure 3 is It is a three-dimensional view showing a state in which the building channel according to the first preferred embodiment of the present invention is assembled.

1 to 3, the building channel according to the first embodiment of the present invention is assembled in a direction intersecting the lower fixed channel 10 and the lower fixed channel 10 formed to a predetermined length. It consists of an upper fixed channel 30 to be installed.

The lower fixed channel 10 has a 'U' shape in cross section and is coupled to the channel body 11 and the channel body 11 by fitting the upper fixed channel 30 as well as folding wings to fix the upper fixed channel 30 (14) consists of

The channel body 11 includes a bottom plate 12 formed with a predetermined width and a pair of side plates 13 formed on both sides of the bottom plate 12 .

Folding wings 14 are formed at regular intervals on each of the pair of side plates 13 , and a folding connection part 15 connected to the side plate 13 is integrally formed on a lower portion of the folding wings 14 .

In addition, inner grooves 16 are formed on both sides of the folding connection part 15 , respectively, and the inner grooves 16 are formed lower than the upper surface 13a of the side plate 13 . This is to allow the folding of the folding wings 14 to be performed more smoothly when the folding wings 14 are folded after inserting the upper fixed channel 30 .

The inner inlet groove 16 is formed in a substantially rectangular shape as shown in FIG. 1 , and the fixed wing 31 of the upper fixed channel 30 is inserted at the lower end of the folding wing 14 in the state where the upper fixed channel 30 is inserted. ) The upper surface adhesion surface 17 in close contact with the upper surface is formed with a predetermined length.

That is, the fitting portion (h) spaced apart by a predetermined height from the upper surface (13a) of the side plate (13) to the upper surface adhesion surface (17) is formed.

The height of the fitting portion (h) may be formed at the same height as the fixed wing 31 of the upper fixed channel 30, and the height of the fixed wing 30 so that the fixed wing 31 can be more easily inserted. It may be formed somewhat higher.

This fitting part (h) is formed so that the upper fixed channel 30 can be easily inserted and assembled.

The upper contact surface 17 of the folding wing 14 extends horizontally, and a lower inclined surface 18 inclined at a predetermined angle as in FIG. 1 is formed at the tip of the upper surface contact surface 17, A side contact portion 19 protruding outwardly is integrally formed on the lower inclined surface 18 .

In addition, the side contact part 19 is in close contact with the inner surface of the upper fixed channel 30 so that the upper fixed channel 30 does not move.

In addition, an upper inclined surface 20 inclined at a predetermined angle is formed on the upper portion of the side contact portion 19 , and a first notch hole 21 having a substantially triangular shape therein is formed in the folding wing 14 to facilitate bending. ) is formed.

The upper fixed channel 30 is assembled by being inserted into the fitting portion (h), and is formed in an approximately “∩” shape in cross section, and the lower portion of the upper fixed channel 30 is a fixed wing fitted into the fitting portion (h). (31) is integrally formed.

Meanwhile, the upper fixed channel 30 may include a first upper fixed channel 30a having a low height and a second upper fixed channel 30b having a higher height.

It goes without saying that the first upper fixed channel 30a and the second upper fixed channel 30b are selectively used depending on the location to be installed.

Next, the coupling relationship of the building channel according to the first preferred embodiment of the present invention will be described.

1 to 3, in the building channel according to the first embodiment of the present invention, the lower fixed channel 10 is installed to be spaced apart by a predetermined interval, and the lower fixed channel 10 intersects each other. It is installed by inserting the upper fixed channel 30 in the direction.

As shown in Fig. 2, the upper fixed channel 30 is installed to be spaced apart from the lower fixed channel 10 at a predetermined interval, and as shown in Fig. 3, grind, the upper fixed channel 30 has a height A low first upper fixed channel 30a or a high second upper fixed channel 30b is installed to cross each other.

That is, in the lower fixed channel 10, the upper fixed channel 30 may be installed to be spaced apart from each other at a predetermined interval, or the first upper fixed channel 30a and the second upper fixed channel 30b may be installed alternately.

The upper fixed channel 30 is assembled by being inserted into the fitting portion h formed on the lower portion of the folding wing 14 of the lower fixed channel 10 .

That is, when the fixed wing 31 of the upper fixed channel 30 is pushed from the side of the lower fixed channel 10, the fixed wing 31 is inserted into the fitting part (h), and the upper fixed channel (30) is fitted to the fitting portion (h) of the plurality of folding wings (14).

In this way, in the state in which the upper fixed channel 30 is fitted, an external force is applied to the folding wing 14 protruding from the upper surface of the side plate 13 to be folded.

That is, when the folding wing 14 is folded while the upper fixed channel 30 is inserted into the fitting part h, the folding wing 14 is in close contact with the upper surface of the fixed wing 31 .

At this time, the side contact portion 19 of the folding wing 14 is folded while in contact with the inner vertical surface of the upper fixed channel 30 . Accordingly, the folding blade 14 is in close contact with the upper surface of the fixed blade 31 , and the side contact portion 19 is in close contact with the vertical surface of the upper fixed channel 30 .

Accordingly, the upper fixed channel 30 is compressed in the vertical direction by the folding wings 14 and is compressed in the lateral direction by the side contact part 19 .

The upper and lower fixed channels 30 are coupled to each other so that the upper and lower sides and sides do not move by the folding wings 14 .

<Second embodiment>

Figure 4 is a front view showing a building channel according to a second preferred embodiment of the present invention, Figure 5 is a three-dimensional view showing an assembled state of the building channel according to the second preferred embodiment of the present invention, Figure 6 is It is a three-dimensional view showing a state in which the building channel according to the second preferred embodiment of the present invention is assembled.

4 to 6, the building channel according to the second embodiment of the present invention consists of a lower fixed channel 10 and an upper fixed channel 30, and has the same name as the first embodiment described above. will be described using the same reference numerals.

The lower fixed channel 10 is formed in a 'U' shape in cross section, and a plurality of folding wings 14 are formed at regular intervals on the upper surface of the side plate 13 .

Between the upper surface 13a of the side plate 13 and the folding blade 14, a fitting portion h is formed at a predetermined height so that the fixed blade 31 can be fitted. The height of the fitting portion (h) is preferably formed at the same height as the height of the stator blade (31).

The folding wing 14 is formed on the lower inclined surface 18 to be inclined at a predetermined angle from the upper end of the fitting portion h, and an arc-shaped side contact portion 19 is integrally extended and formed, and the upper inclined surface 19 is formed. integrally extended.

In addition, a first notch hole 21 is formed on the inside of the folding wing 14 so as to be folded smoothly.

On the other hand, the side plate 13 has a lower fixed wing 25 fitted between the upper fixed channel 30 and the upper fixed channel 30 is formed.

A 'U'-shaped second notch hole 26 is formed at the lower portion of the lower fixed wing 25 so that the lower fixed wing 25 is folded, and the upper portion of the lower fixed wing 25 is smoothly bent. A third notch hole 27 on a straight line is formed to make this happen.

5 and 6, the lower fixed channel 10 is installed to be spaced apart from each other at a predetermined interval, and the upper fixed channel 30 is inserted into the fitting portion h of the lower fixed channel 10. .

That is, the fixed wing 31 of the upper fixed channel 30 is inserted into the fitting portion h, and the folding wing 14 of the lower fixed channel 10 is folded by applying an external force.

The folding blade 14 is closely fixed to the upper surface of the fixed blade 31 , and the side contact portion 19 of the folding blade 14 is closely and fixed to the inner surface of the upper fixing channel 30 .

Accordingly, the upper fixed channel 30 is fixed so as not to move in the vertical and horizontal directions by the folding wings 14 .

In addition, the lower fixed wings 25 formed on the side plate 13 are placed between the upper fixed channels 30 . That is, an external force is applied to the lower fixed wing 25 to be folded to be positioned between the upper fixed channels 30 .

As shown in FIG. 6, the lower fixed wing 25 is placed between the outer vertical surfaces of the upper fixed channel 30, and the upper fixed channel 30 is not only the folding wing 14 but also the lower fixed wing 25. It is fixed in a double position by means of which it does not move.

<Third embodiment>

7 is a front view showing a building channel according to a third preferred embodiment of the present invention, and FIG. 8 is a three-dimensional view showing a building channel according to a third preferred embodiment of the present invention.

7 and 8, the building channel according to the third embodiment of the present invention consists of a lower fixed channel 10 and an upper fixed channel 30, and has the same name as the first embodiment described above. The description will be made using the same reference numerals, and overlapping descriptions thereof will be omitted.

A plurality of folding wings 14 are formed at regular intervals on the side plate 13 of the lower fixed channel 10, and the folding connection part 15 connected to the side plate 13 extends integrally to the folding wings 14. is formed

In addition, inner grooves 16 are formed on both sides of the folding connection portion 15, respectively, and on the outside of the inner groove portion 16, a separation prevention groove portion 28 for preventing separation of the upper fixing channel 30 is formed.

As shown in FIGS. 7 and 8, the separation prevention groove 28 is formed lower than the upper surface 13a of the side plate 13, and thus, between the departure prevention groove 28 and the upper surface 13a, a separation preventing sill of a certain height ( 28a) is formed.

As described above, the fixed wing 31 of the upper fixed channel 30 folds the folding wing 14 in a state of being seated on the detachment preventing surface 28, so that it is fixed in close contact with the detachment preventing surface 28, and is fixed The wing 31 is caught on the departure preventing sill 28a to prevent the separation of the upper fixed channel 30 .

In addition, a separation preventing surface 29 is formed on the folding wing 14 to prevent separation of the upper fixed channel 30 .

Since the separation preventing surface 29 extends to the outside of the folding blade 14, when the folding blade 14 is folded, the separation prevention surface 29 is fixed in contact with the upper surface of the fixed blade 31 longer.

Meanwhile, the separation preventing groove portion 28 and the separation preventing surface 29 may be formed differently depending on the length of the fixed wing 31 . That is, when the length of the stator blade 31 is 20 mm, the length of the separation prevention groove 28 and the separation prevention surface 29 is 20 mm, and when the length of the stator blade 31 is 40 mm, 40 mm to form with

In this way, the length of the separation prevention groove portion 28 and the separation prevention surface 29 is formed to be the same as the length of the fixing blade 31 so that the fixing blade 31 is in the separation prevention groove portion 28 and the separation prevention surface 29. to be joined so as not to be separated by

9 is a front view showing a state in which a tile is installed in a building channel according to a preferred embodiment of the present invention, and FIG. 10 is a three-dimensional view showing a state in which a tile is installed in a building channel according to a preferred embodiment of the present invention. 11 is a three-dimensional view showing a state in which a roof tile is installed in a building channel according to a preferred embodiment of the present invention.

9 to 11 schematically show a state in which a tile-type color steel plate (also called a 'tin tile tile') is installed on the building channel of the present invention, and the lower fixed channel 10 has a lower first upper part. The fixed channel 30a and the second upper fixed channel 30b having a high height are assembled to be spaced apart by a predetermined distance.

In this way, the tile-type color steel plate 35 is seated on the upper surfaces of the first upper fixed channel 30a and the second upper fixed channel 30b, so that the tile can be installed.

As such, the building channel according to the embodiment of the present invention can be used to construct the exterior material of a building, as well as be used to construct the interior material of the building.

Although the invention made by the present inventors has been described in detail according to the above embodiments, the present invention is not limited to the above embodiments and various modifications can be made without departing from the gist of the present invention.

10: lower fixed channel 11: channel body
12: bottom plate 13: side plate
14: folding wings 15: folding connection part
16: inner mouth groove 17: upper surface contact surface
18: lower inclined surface 19: side contact part
20: upper inclined surface 21: first notch hole
25: lower fixed wing 26: second notch hole
27: third notch hole 28: separation prevention groove portion
29: escape prevention surface
30: upper fixed channel 31: fixed wing

Claims (6)

A channel body 11 having a 'U' shape in cross section, and a plurality of folding wings 14 at regular intervals along the longitudinal direction of the channel body 11 are integrally formed, and the a lower fixed channel 10 in which the fitting portion (h) is integrally formed so as to be assembled by inserting the upper fixed channel 30 into the lower portion;
It is coupled in a direction crossing the lower fixed channel 10, and the upper fixed channel 30 is integrally formed with the fixed wings 31 protruding inward from the lower end so as to be fitted into the fitting part (h).
The upper fixed channel 30 bends the folding wings 14 in the state inserted into the fitting part (h) to closely fix the upper fixed channel 30 to the lower fixed channel 10. For construction, characterized in that Chanel.
According to claim 1,
The folding wings 14 may include a pair of folding connecting portions 15 integrally extending from the side plate 13;
an inner mouth groove 16 formed as low as a predetermined height from the upper surface 13a of the side plate 13 so that the folding wings 14 can be easily folded;
An upper contact surface 17 extending outwardly from the top of the folding connection part 15 so as to be in close contact with the upper surface of the fixed wings 31 of the upper fixed channel 30 in a state in which the folding wings 14 are fitted;
A fitting portion (h) formed at a predetermined height from the upper surface (13a) of the side plate (13) to the upper surface adhesion surface (17) so that the fixed wings (31) of the upper fixed channel (30) are fitted; Characterized building channel.
3. The method of claim 2,
The folding wing 14 includes a lower inclined surface 18 extending obliquely outwardly from the upper contact surface 17;
a side contact portion 19 protruding to be in close contact with the inner surface of the upper fixed channel 30 so as to stably fix the upper fixed channel 30;
an upper inclined surface 20 inclinedly extending inwardly of the side contact portion 19;
a first notch hole 21 formed inside the folding blade 14 so that the folding blade 14 can be easily folded;
The side contact part (19) is in close contact with the inner surface of the upper fixed channel (30) to fix the upper fixed channel (30).
According to claim 1,
The side plate 13 includes a lower fixed wing 25 that is formed to be interposed between the upper fixed channel 30;
The lower fixed wings (25) are placed between the upper fixed channels (30) spaced apart by a predetermined distance to fix the upper fixed channels (30).
5. The method of claim 4,
The lower fixed wing 25 includes a second notch hole 26 formed in a 'U' shape at the lower portion of the lower fixed wing 25 to facilitate bending;
Building channel comprising;
3. The method of claim 2,
The lower fixed channel 10 has a separation prevention groove 28 formed on the outside of the inner inlet groove 16 to prevent the separation of the upper fixed channel 30;
Including; and a separation prevention surface 29 inclined to the outside of the upper surface adhesion surface 17 of the folding wing 14 to prevent the separation of the upper fixed channel 30.
The anti-separation surface (29) is a channel for construction, characterized in that it is formed to be variable according to the length of the fixed wings (31) of the upper fixed channel (30).

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