JPH0718203B2 - Clean room ceiling - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a ceiling structure, and more particularly to a suspended ceiling.
In g), the supporting skeleton is in the form of a grid with crossing support rails, which support rails suspend and support the panel while keeping it sealed.

Description of the Related Art A suspended ceiling as described above is known, for example, from DE 2858 140 C2. A longitudinal or transverse aluminum T-section bearing rail is used as the ceiling bearing rail disclosed in this application. The longitudinal rail and the transverse rail are connected to each other by a joining element. The disadvantage of manufacturing this method is that it makes a special shape expensive and
There is a lack of compatibility with various structural axial dimensions. In addition, the assembly of relatively long longitudinal bearing rails is problematic. The joint between the vertical bearing rail and the horizontal bearing rail is susceptible to leakage. This leakage must be avoided in clean rooms used for the industrial manufacture of electrical or electronic components.

SUMMARY OF THE INVENTION An object of the present invention is a completely sealed suspended ceiling,
It is useful for band screen covers in nodal systems. This makes it easy to adapt to different structural axial dimensions and also to meet the demand for easy creation of clean room conditions from sheet metal compartments and simple assembly. Thus, it is possible to make a clean room cover which may also be suitable for providing a movable separating wall.

This object is achieved according to the invention substantially by: That is, the bearing rails can be fixed to the knotting element in an airtight and dusttight manner. The bearing rail also has an outwardly projecting support flange on its front wall, and each knot element has a bearing surface on which it is received. Due to this structure of the bearing rail and the knotting element, a simple assembly, such as mounting the panel on the bearing rail, and also a simple assembly of the overall knotting area, provide a complete construction. Sealing is achieved.

The sealing means is applied between the bearing flange of the bearing rail and the bearing surface of the knotting element. The sealing means can be easily attached to the corresponding bearing rail surface before the sub-cover is assembled.

Leakage is thus avoided at the intermediate joint between the bearing rails that meet at the knot element. The sealing means simultaneously fulfills three sealing functions. That is, the bearing rail is sealed with respect to the knot element. The panel is sealed with respect to the bearing rail. And when two intersecting bearing rails meet at the diagonal joint, they are sealed to each other.

In order to achieve the connection between the bearing rail and the knot element carrying the flange of this bearing rail, this flange has a pore-like opening into which the retaining projection of the knot element engages. This allows the bearing rail to be correctly and easily assembled to the knot element in the correct position.

In a particularly advantageous form of the invention, each retaining projection has an eyelet for accommodating the tightening mechanism. This allows a simple and secure connection between the bearing rail and the knot element.

The upper edge of this small hole extends obliquely with respect to the horizontal edge. The tightening mechanism can be locked to the horizontal line of this eyelet. That is, here, a wedge effect is created between the tightening mechanism and the small hole.

The clamping element has a clamping edge extending downwards. This clamping edge acts on the support flange. It preferably acts between the projections of the bearing element. Therefore, it acts directly on the underside of the support flange. A sealing strip or the like extends there to provide a sufficient sealing function. Such a fastening element can easily be made from sheet metal.

In the clean room ceiling according to the invention, the sealing action takes place substantially in the horizontal plane. At the vertical joints between the individual components, apart from the joints of the diagonal joints between the bearing rails in the node area, no sealing means are necessary. In this way, the joints between individual panels or the like are unnecessarily wide,
It can be easily prevented from getting dirty. Since the bearing rail can be made from sheet metal by forming substantially vertical sidewalls and front walls, the joints at the edges of the bearing rail are also airtight and dust-tight. Can be sealed. This will further aid in achieving the required clean room conditions.

Other features of the present invention are as follows. The vertical side wall of the panel is provided on its upper edge with a supporting edge which projects horizontally outwardly at an angle, which supporting edge is preferably provided with a reinforcing fold plate directed obliquely upward at an angle of about 45 ° with respect thereto. . In this way a reliable assembly and a simple means of holding the panel on the bearing rail is obtained. Desirably, the support edge of the panel extends continuously over its entire length.

In particular, suspended ceilings of the type mentioned here are advantageous due to the further inventive idea. The support edge of the panel,
In particular, the folding plate of the panel is pressed by the pressure from the spring element with the clamping means. Pressure is applied in the direction of the respective support edge of the bearing rail carrying the sealing means.
The panel is thereby sealed with respect to the bearing rail. This is not only due to the weight of the panel itself, but also because the spring element ensures a sufficient sealing effect. Therefore, even if a slightly excessive pressure is generated in the clean room, it can be dealt with. To ensure the reliability of the assembly, the spring element can be inserted in the bearing rail. It is desirable that the support rail has a C-shaped cross-section with an open top.

The spring element according to the invention, which can also be inserted in the sub-covers of different structures, preferably has a base section which rests on the inner bottom of the bearing rail. A fastening portion that extends obliquely upward and outward is connected to the base section. Furthermore, the fastening tongues, which extend obliquely upward and inward, are engaged under the left and right support edges of the bearing rail. The spring element thus secures its seat in the bearing rail in a simple manner.

Brief Description of the Drawings The objects, features, effects and availability of the present invention will be apparent from the following description of the embodiments with reference to the accompanying drawings. In the accompanying drawings, FIG. 1 is a partially exploded perspective view of one knot element and two suspended bearing rails, showing an insertion member before being attached to the bearing rails. .

2a is an exploded perspective view of the knotting element according to FIG. 1 and a bearing rail according to another embodiment, the bearing rail being in a state before being suspended at the knotting element,
It shows a partial breakdown.

FIG. 2b is an exploded perspective view of a knotting element according to still another embodiment, in which a bearing rail according to another embodiment is in a state before being suspended at the knotting element, which is partly disassembled. Is shown.

3a to 3d are spring elements according to the invention,
The insert member or the like is fixed to the bearing rail while adjusting the suspended ceiling element. Of these figures, Figure 3a is a perspective view of only the spring element.

FIG. 3b is a front sectional view with the spring element placed in the bearing rail.

FIG. 3c is a view from above of the spring element of FIG. 3b.

FIG. 3d is a side view taken along the line AA of FIG. 3b.

Figures 4a to 4d show a spring element according to a further embodiment for fixing the insert member or the like to the bearing rail in coordination with the suspended ceiling element. Of these, FIG. 4a is a side view of the spring element.

FIG. 4b is a top view of the spring element.

FIG. 4c is a front view in partial section of the spring element.

DESCRIPTION OF THE PREFERRED EMBODIMENT According to FIG. 1, the bearing rail 1 is provided on its front wall 15 with a support flange 3 which is bent outward in the longitudinal direction. The bearing rail 1 can have a Z-shaped contour on the front side with a support flange 3. The support flange 3 comprises a hole 4 in the form of an elongated hole. A retaining projection plate 5 of the knotting element 2 is engaged in the hole 4. In order to make the bearing rail 1 easier to manufacture, for example, the bearing rail can be made as a section member made by processing sheet metal once folded or rolled. This bearing rail can be connected to the knotting element 2 to tailor the ceiling, for example, to a space.

The bearing surface of the knotting element is part of the sealing body. The seal is box-shaped with an inspection cover 9. The bearing surface of the knotting element can then be located on the inspection cover 9.
In this way, complete light shielding of the knotting element is achieved with a good sealing function. The knot element 2 is essentially a bearing element 6, an upwardly projecting retaining projection plate 5, a support flange 3.
A box-shaped sealing body 8 which forms a bearing surface 18 for the housing, a side wall 19 pointing downwards, and an inspection cover 9 which is mounted on the sealing body 8 from below.

The bearing rail 1 is fixed at its support flange 3 by a cross-shaped clamping element 7. The clamping element 7 serves to press the flange 3 towards the bearing surface 18.
For this purpose, the clamping element 7 has a clamping edge 21. This tightening edge 21 projects downward and enters between the holding projecting plates 5 and 5. The knot element 2 is configured to engage the threaded rod 10 and adjust its position in the vertical direction. That is, the bearing element 6 is screwed onto the threaded rod 10 and fixed by the nut 51. A counter nut 13 is used to set the height level of the knotting element 2 that engages with the threaded rod 10.

The tightening force caused by the tightening element 7 is achieved by means of a tightening nut 11 which is notched on the side. A sealing element 52 is engaged with the threaded rod 10 just below the tightening element 7. The sealing element 52 is in close engagement with the threaded rod to provide the threaded rod 10
The hole 53 of the fastening element 2 for the passage of air is sealed to completely block the flow of air and the ingress of dust.

The edge 12 of the support flange 3 of the bearing rail 1 is a diagonal joint (mi
ter) 14 is equipped. The upper edge of the vertical side wall 16 of the bearing rail 1 is bent inward to form a support edge 17. Sealed band 20
Extend longitudinally along the upper side of the support edge 17 and then laterally along the lower side of the support flange 3. The sealing band 20 is located between the support flange 3 and the bearing surface 18 and is a unitary structure passing through the joint between the diagonal joints 14 and 14. In the assembled state, the sealing band 20 is located at the bearing surface 18 of the knotting element 2.
When the sealing band 20 is pressed into contact with the clamping element 7, it seals the bearing rail 1 against the knot element 2 in a horizontal plane.

If the supporting flange 3 is cut to a size suitable for the diagonal joint, that is, if one supporting flange 3 is adapted to the diagonal joint 14 of the supporting flanges 3 of the bearing rails 1 adjacent to each other, the sealing band is formed. The 20 arrangement structure is particularly effective and easy to manufacture. For square or rectangular knot elements, a 45 ° diagonal joint is advantageous. A 60 ° diagonal joint is advantageous, for example, for triangular knot elements. Other polygonal node structures are of course possible and the corresponding diagonal joint angles should be selected appropriately.

In order to achieve the best possible sealing action in the area of the diagonal joint, the sealing band 20 is 1 for each bearing rail 1.
One shall extend beyond the diagonal joint cut. It is desirable to seal the diagonal joint 14 by doing so. The expansion joint in the sealing band 20 lies below the support flange 3 of the bearing rail 1, that is to say the support flange 3 rests on the bearing surface 18 of the knot element 2.

As can be seen from FIG. 1, the bearing element 6 projects above the bearing surface 18 of the sealing body 8 by a predetermined material thickness. The supporting flange 3 projects inward beyond the position of the supporting projecting plate 5, and the projecting portion rests on the bearing element 6 and is in metal-to-metal contact. The sealing band 20 is only placed at the bearing surface 18 and not at the bearing element 6. In this way, the bearing rail 1 is installed at a certain height with respect to the knotting element 2, so that on the one hand the sealing band 20 is crimped by a predetermined amount, and on the other hand the underside of the bearing rail 1 is located on the side wall 19 of the sealing body 8. The inspection covers 9 attached to the above are arranged on the same plane as the lower side.

A cross member 35 is provided between the front wall 15 and the vertical side walls 16, 16 of the bearing rail 1 in order to seal the seams at the edges. The crosspiece member 35 is made of a spring-flexible material and its edges constitute the closure element 54 with the sealing elements 36 on the left and right. The crosspiece member 35 is pushed inward and reaches the knot-side end of the bearing rail 1 with a C-shaped contour. Thus, this sealing element 36 will seal the seam at the edges. The spring-flexible material rungs 35 are adjusted so that they are slightly bent when they enter the bearing rail 1 and, in the sealed position, remain firmly in that position and continue to perform the tightening action. In this way, the longitudinal differences of the assembled bearing rail 1 are easily adjusted without compromising the desired sealing function.

In the detailed description of the invention and in the claims, insert 30 is used as a single descriptive term for any type of insert that could be used to fill open area 34 of a suspended ceiling. There is. The term has no gaps in the form of panels, lighting elements, air supply devices,
Air outlet devices, or similar inserts are included.
The only requirement for use with the present invention is that the inserter used is generally made as described herein for insert 30.

The insert 30 has a vertical side wall 31. A supporting edge 32 is provided on the upper end of the side wall 31 and projects outward. This support edge
32 includes an inclined plate 33. That is, the inclined plate 33 is inclined obliquely upward and inward from the outer edge of the support edge 32. The insert 30 serves to cover the ceiling area 34. The insert 30 is fixed at the bearing rail 1 by means of a spring element 37 as shown in FIG. 3 or 4. The support edge 32 is then a sealing strip 20 placed on the support edge 17 of the bearing rail 1.
It is mounted on top of it and the sealing effect is demonstrated. In order to determine the exact height level between the insert 30 and the bearing rail 1, the support edge 17 of the bearing rail 1 or the support edge 32 of the insert 30 is provided with a protruding pin for ensuring the desired spacing. be able to. In this way it is ensured that the lower side of the bearing rail 1 is flush with the lower side of the insert 30.

In the embodiment shown in FIG. 2a, the bearing rail 1 is cut smoothly by a certain length at the head end facing the knot element 2. The frame shoe 38 with the "Z" fold forming the support flange 3 is firmly inserted into the knot-side end and projects firmly therefrom. The support flange 3 projects from the front wall 15 of the frame shoe 38. In the assembled state, this front wall 15 is recessed with respect to the end of the bearing rail 1. A sealing strip 55 is located in the intermediate space resulting from this depression. This sealing elongated plate 55 is a side wall of the sealing body 8 when the knotting element 2 and the bearing rail 1 are combined.
It will come into close contact with the outer surface of 19. In order to position the frame shoe 38 in the recess as described above, the support flange 3 is provided with stop notches 50 on both sides thereof. The sealing band 20 extends in this embodiment and in the embodiment shown in FIG. 1 from the upper side of the support edge 17 around the oblique joint 14 and along the lower side of the support flange 3.

FIG. 2b shows another embodiment of the knotting element 2 and the frame shoe 38. The plate-shaped enclosure preferably has a central cut 27. This central cutting portion 27 is largely spread by the bracket-shaped clamping element 7 and the bracket-shaped fastening element 26. In addition, this central cutout 27 creates space for fitting ceiling accessories such as sprinklers. Frame shoe 38 is bearing rail 1
It is held by frictional engagement between both vertical side walls 16, 16 by a tightening mechanism 25. The tightening mechanism 25 is a spring plate, and both ends of the tightening mechanism 25 pass through an elongated hole-shaped cut portion 29 provided on the side flange 63 of the frame shoe 38 placed in one direction.

The knot element 2 comprises a substantially plate-shaped bearing element 6, an inspection cover 9 mounted on the bearing element 6, and a bracket-shaped fastening element 26 (shown partially in dotted lines above the bearing element 6). To be done. The knot element 2 has a nut 51 on its upper side.
Is equipped with. A screw rod similar to that shown in FIG. 1 is screwed into the nut 51. However, this threaded rod is not shown.

The bearing element 6 is a one-piece structure having four retaining projecting plates 5 extending upward in four directions. Each of the four retaining projecting plates 5 has a small hole 22 and the upper end thereof is inclined at an angle. The bearing element 6 has a cutting portion 27 in the center. The lower side edge of the fastening element 26 penetrates this cutting portion 27. The fastening element 7 is made like the fastening element 26 in this embodiment. That is, the fastening element 7 is also in the shape of a bracket, and the left and right side surfaces are provided with a fastening edge 21 which is bent slightly outwardly. The tightening edge 21 is wider than the support flange 3 of the frame shoe 38, and has a diagonal joint.
Cut to fit 14 The inspection cover 9 is provided with a banding protrusion 28 inside thereof. This banding projection 28 is provided for fixing the inspection cover 9 to the bearing element 6. The bracket-shaped structure of the fastening element 7 and the fastening element 26 superposed on it enable the installation of ceiling fixtures such as sprinklers.

By using the spring element 37 shown in FIGS. 3a to 3d, the supporting edge 32 of the insert member 30 and in particular the insert member 30.
The inclined plate 33 in the fixed state is given a pressing action in the respective directions of the left and right supporting edges 17 of the bearing rail 1 provided with the sealing band 20. The spring element 37 can be inserted by elastic deformation into the bearing rail 1 made as a C-shaped profile. In the assembled position, the spring element 37 has a base section 40 located inside the bottom 39 of the bearing rail 1. A clamp 41 (band portion) is connected to the base section 40 and faces diagonally outward and upward. The clamp 41 engages below the left and right support edges 17 of the bearing rail 1. Also, each clamp 41 has a base section
Fastening flank 42 extending upward from 40 (flank part)
Are connected. The fastening flank 42 engages with and presses the supporting edge 32 of the insertion member 30 with the outwardly projecting fastening portion. More preferably, the inclined plate 33 of the insertion member 30 is engaged and pressed or tightened.

The spring element 37 shown in Figures 3a-3d is formed by bending a single spring wire. In this way, the clamp 41 has four right-angled clamp sections 44, 4
Have 5,46,47. The first clamp section 44 and the third clamp section 46 extend obliquely upward and outward when viewed from the bottom 39 of the bearing rail 1. The second clamp section 45 is located at the corner between the vertical side wall 16 of the bearing rail and the supporting edge 17. The fourth clamp section 47 is located at the bottom of the bearing rail 1. The spring element 37 thus has a fixed clamping seat inside the bearing rail 1. At the same time, the tightening flank 42, together with the tightening portion 43, insert member 30.
The tightening force is effectively and independently applied to the inclined plate 33 so that it can freely move.

The clamping flank 42 is directly connected to the fourth clamping section 47. When the fastening flank 42 is moved to the side, it receives a twisting force. The tightening portion 43 has a tightening section 48 (section protruding outward). This clamping section 48 is substantially parallel to the bottom 39 of the bearing rail 1 and extends outwardly so as to act on the inclined plate 33 of the insert 30. The operation section 49 connected to the tightening section 48 allows the insertion member 30 to be removed by manually pressing the left and right flanks 42 toward each other.

To position the spring element 37, first the spring element 37 is placed inside the top of the bearing rail 1 and placed on the bottom 40. At this time, stand the bearing rails substantially parallel to the length direction. This spring element 37 is then rotated to lock the clamp 41 below the support edge 17. Then, the fastening flank 42 has the fastening portion 43 projecting above the supporting edge 17, and the adjacent insertion member.
You are now ready to tighten 30.

Yet another embodiment of the spring element 56 is shown in FIGS. 4a-4c. The spring element 56 is inserted by elastic deformation into the bearing rail 1 made as a C-shaped profile. In the assembled position, the spring element 56 has its base section 57 lying inside the bottom 39 of the bearing rail 1. From this base section 57, a tongue portion 58 for tightening (a band portion) is extended. That is, the tongue 58 extends diagonally inward and upward and engages below the left and right support edges 17 of the bearing rail 1. A spring portion 59 (flank portion) extending upward is connected to a central portion of the base section 57. The spring portion 59 exerts a tightening force on the insertion member 30 by the protrusion 61 projecting outward thereof abutting the supporting edge 32 of the insertion member 30.

The spring element 56 shown in Figures 4a-4c is made as a single piece from a sheet metal sheet. Therefore, the tightening tongue
Both 58 and spring portion 59 extend upward from the base compartment 57. The spring element 56 thus has a fixed clamping seat inside the bearing rail 1. On the other hand, at the same time, the spring portion 59 exerts a clamping force on the inclined plate 33 of the insert member 30 effectively and practically independently of it, in such a way that its projection 61 can move freely.

The protrusion 61 has a fastening section 62. The fastening section 62 extends substantially parallel to the bottom 39 of the bearing rail 1 and extends outwardly and abuts the inclined plate 33 of the insert 30. The sliding section 60, which is connected to the clamping section 62, makes it possible to release the insert 30 by pressing the spring part 59.

To use this embodiment, the spring element 56 is inserted into the C-shaped profile of the bearing rail 1. At that time, the base compartment 57
In the area (2), there is a tongue portion (58) for binding band that abuts the inside of the vertical side wall (16). The elastic bandage tongue 58 engages the underside of the support edge 17.

Referring again to FIG. 1, in assembling a suspended ceiling according to the present invention, each tightening nut 11 is first attached to the threaded rod.
Set in 10. After that, the fastening element 7 and the sealing element 52 are mounted. Then insert counter nut 13. Sealed body 8
Positioning them at the desired height by turning the threaded rods with respect to the bearing elements 6 with bearing elements or alternatively with the fastening elements 26 with bearing elements 6 and counter nuts 13
To fix it in place. Then, bearing rail 1
A sealing means 20 is provided in advance on the bearing rail 1 so that the bearing rail 1 is suspended such that the hole 4 is at the retaining projection 5 of the bearing element 6. The clamping element 7 moves the bearing rail 1 by means of the clamping nut 11 in the direction of the bearing surface 18 of the knot element 2. The sealing means 20 are then pressed together. This pressing action takes place until the leading edge of the respective support flange 3 strikes the edge of the bearing element 6 which projects above the bearing surface 18. The underside of the bearing rail 1 is a substantially flat surface and the underside of the inspection cover 9 is placed from below at the seal 8 or at the bearing element 6.

Next, the insertion member 30, or lighting equipment at that location,
An air supply device, an air exhaust device, etc., whose outer periphery has a corresponding size, enter the open ceiling region 34. Therefore, the insertion member 30 inclined from the lower side passes through the ceiling region 34 and is accommodated in the intermediate space between the ceiling and the suspended ceiling. The supporting edge 32 is then pressed from above against the sealing band 20 provided above the supporting edge 17 of the bearing rail 1. However, prior to this, the spring element 37 or 56 can be placed in the bearing rail to increase the bearing pressure. The height of the side wall 31 is determined by the material thickness of the supporting edge 32 and the sealing band.
The size is determined in consideration of the height of the bearing rail 1 including 20. As a result, when the inserts 30 or other devices are fixed to the bearing rail 1, their undersides are flush with the underside of the bearing rail 1 and the underside of the inspection cover 9 of the knotting element 2. Become.

In the ceiling structure according to the invention, it is clear that no sealing means is required at the vertical joint between the bearing rail 1 and the insert member 30 since there is almost no gap between them.

[Brief description of drawings]

FIG. 1 is an exploded perspective view, partly broken, of one knot element and two bearing rails, the insert being in a state before it is attached to the bearing rail. FIG. 2a is an exploded perspective view, partly broken, of the embodiment in which the knot element is the same as that in FIG. 1 but the bearing rail is different, and FIG. 2b is the embodiment of yet another knot element. . Figures 3a-3d are spring elements according to the invention for fixing the insert member to a bearing rail. Figures 4a-4c are spring elements according to yet another embodiment. 1 ... Bearing rail, 2 ... Knotting element 3 ... Support flange, 4 ... Slotted hole 5 ... Holding protrusion, 6 ... Bearing element 7 ... Tightening element, 8 ... Sealing body 9 …… Inspection cover, 10 …… Screw rod 11 …… Tightening nut, 14 …… Slanting joint joint 15 …… Front wall, 16 …… Sidewall 17 …… Supporting edge, 18 …… Bearing surface 19 …… Sidewall , 20 ... sealing means (sealing band) 30 ... insertion member, 32 ... support edge 34 ... open area, 38 ... frame shoe.

Claims (10)

[Claims] 1. A suspended ceiling comprising a bearing rail 1 intersecting in a grid pattern, a plurality of knotting elements 2, a sealing means 20 and an insertion member 30, said bearing rail 1 comprising a vertical side wall 16, a front wall 15, and This front wall 15 has a support flange 3 projecting at an angle, said intersecting bearing rails 1 defining an open area between them; said knot element 2 has a side wall 19 for receiving and bearing the support flange 3. It comprises a bearing surface 18 for fixing and supporting the rail 1 and its intersections, and said knot element 2 comprises means for suspending a suspended ceiling;
The sealing means 20 is provided along the bearing rail 1 and the support flange 3; the insert member 30 is housed in the open area 34 in a gastight and dust-tight manner;
It is mounted in front of the sealing means 20 provided on the bearing rail 1 to ensure a tight seal; in this case the insert 30 is selected from the group consisting of tightly spaced panels, lighting elements, air supply devices, air discharge devices. The above suspended ceiling. 2. The suspended ceiling according to claim 1, wherein the support flange 3 of the bearing rail 1 is substantially horizontal, and the sealing means 20 is the substantially horizontal support flange 3 of the bearing rail 1. And the bearing surface 18 of the knotting element 2 is provided. 3. A suspended ceiling according to claim 1, wherein the bearing rail 1 has two parallel vertical side walls 16 having upper edges.
The upper edge of 16 is characterized in that a support edge 17 that receives the insertion member 30 in a sealed manner extends at an angle.
The suspended ceiling. 4. A suspended ceiling according to claim 3, wherein the support edges 17 of each bearing rail 1 approach each other inwardly and the sealing means 20 are provided on the upper surface of the support edge 17, and The sealing means 20 passes from the upper surface of the supporting edge 17 to the lower side of the supporting flange 3, and the sealing means 20 is composed of one continuous sealing band, and the suspended ceiling is characterized in that . 5. The suspended ceiling according to claim 4, wherein the front wall 15 is substantially vertical, and the support flange 3 projects from the vertical front wall 15 of the bearing rail 1 and is a diagonal joint. The diagonal joint is formed by cutting, and the diagonal joint forms the diagonal joint portion 14 by cooperating with the support flange 3 of the adjacent bearing rail 1 which is similarly cut and formed. Suspended ceiling. 6. A suspended ceiling according to claim 1 or 2, wherein the knotting element 2 is a substantially vertical retaining projection 5.
And at least one of the bearing rails 3 of the bearing rail which cooperates with the knot element 2 is provided with an elongated hole 4 in which a vertical retaining projection 5 of the knot element 2 is provided.
The said suspended ceiling characterized by engaging with. 7. A suspended ceiling according to claim 1 or 2, wherein each knot element 2 comprises a clamping element 7 for imparting a biasing force to the bearing rails intersecting at this knot element 2. A sealing effect is exerted on the knotting element 2, said clamping element 7 acting on the supporting flange 3 of the bearing surface 18 to impart said biasing force, and means for imparting a biasing force to said clamping element 7 are the clamping force. Tightening nut 11 that pushes the attachment element 7 against the knot element 2 and the support flange 3 of the bearing rail 1
The above-mentioned suspended ceiling, characterized in that 8. A suspended ceiling according to claim 1 or 2, wherein the bearing surface 18 of the knotting element 2 is part of the seal 8 and the inspection cover 9 is located there. The suspended ceiling described above, characterized in that 9. The suspended ceiling according to claim 1 or 2, wherein the bearing rail 1 is cut to a predetermined length to form two open ends, and further bent into a Z shape to form the front wall 15 and the front wall 15. Suspended ceiling as defined above, characterized in that a frame shoe 38, which forms a support flange 3 extending from it, is inserted into the end of the bearing rail 1. 10. The suspended ceiling according to claim 1 or 2, wherein the insert member 30 has a vertical wall 31.
The support edge 32 diagonally outwardly from its entire upper edge
The suspended ceiling, further comprising a reinforcing bent body 33 extending diagonally upward at an angle of about 45 ° with respect to the support edge 32.