Strengthening louvre blade and louver with strengthening louvre blade

Abstract

The utility model provides a louvre blade capable of being reinforced in the technical field of louvre windows, which comprises a first bending end, a second bending end, a first inclined plate, a second inclined plate, an arc section, a fixing groove and a bending reinforcing rib, the first inclined plate is positioned below the first bending end and is connected with a vertical section of the first bending end, and the second inclined plate is positioned below the second bending end and is connected with a vertical section of the second bending end; the second inclined plate is located above the second bent end and connected with the vertical section of the second bent end, the first inclined plate and the second inclined plate are connected through an arc section, the fixing grooves are located in one side of the bottom face of the first inclined plate and one side of the bottom face of the second inclined plate respectively, and the horizontal section of the bent reinforcing rib is connected with the arc section. The reinforcing rib fixing plates are vertically placed on the sides, close to the bent reinforcing ribs, of the louvre blades and are perpendicular to the louvre blades, the strength of the louvre blades is enhanced through the bent reinforcing ribs, the middles of the louvre blades are fixed through the reinforcing rib fixing plates, and the problem that the louvre blades deform and fall off or noise is generated due to resonance of the louver is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of louver, specifically relates to a kind of can strengthen louver blade and its louver. BACKGROUND

[0002] Louver, as a kind of by multiple narrow piece close arrangement constitute panel, is named due to its unique louver design, is widely used in indoor and outdoor architectural decoration, ventilation, lighting, sunshade, prevent rain, prevent sand, light rainproof etc.

[0003] Chinese patent publication number: CN221169333U discloses a kind of waterproof and anti-insect vertical louver, including by four aluminium square tube first and last connection made of window frame, aluminium alloy louver frame is fixedly installed in window frame side edge inner side, aluminium alloy louver top frame is installed in window frame top edge downside, aluminium alloy louver bottom frame is installed in window frame bottom edge upside, aluminium alloy louver top frame and aluminium alloy louver bottom frame between installation have a row of vertical metal louver blade, vertical metal louver blade cross section is inclined arrangement, adjacent vertical metal louver blade between being equipped with screen, the louver blade cooperation screen can meet the need of waterproof and anti-insect, with the basic ventilation of louver smoke exhaust function simultaneously, with certain aesthetic property.

[0004] However, if louver span is too large, louver blade length is too long, louver blade will be bent, deformed, even fall off in use process, lead to louver overall appearance deformation, affect the aesthetic property of louver, and louver blade length is too long, when blowing, easy to deform and sway, lead to multiple louver blade because of resonance and generate howling, or louver blade mutual collision produces noise. SUMMARY

[0005] The utility model wants to solve the technical problem of how to improve the strength of louver blade and louver, and how to prevent the noise problem of louver in use process, the purpose of the utility model is to provide a kind of can strengthen louver blade and louver.

[0006] The technical scheme employed by the utility model is: a kind of can strengthen louver blade, the louver blade includes first bending end, second bending end, first inclined plate, second inclined plate, circular arc segment, fixed slot and bending reinforcing rib, the first bending end is located at top, second bending end is located at bottom, the cross section of first bending end, second bending end and bending reinforcing rib is all L-shaped, which is composed of horizontal section and vertical section, the first inclined plate is connected with the vertical section of first bending end below first bending end, the second inclined plate is connected with the vertical section of second bending end above second bending end, the cross section of circular arc segment is circular arc, the first inclined plate is connected with the second inclined plate by circular arc segment, fixed slot is located at one side of the bottom surface of first inclined plate and second inclined plate respectively, the horizontal section of bending reinforcing rib is connected with circular arc segment.

[0007] The louver blade can be strengthened, and the following beneficial effects can be obtained.

[0008] (1) By setting the first bending end and the second bending end on the louver blade, the bending resistance and the torsion resistance of the louver blade can be strengthened, the rigidity of the louver blade is enhanced, and the louver blade can also block water, preventing rainwater from entering the inner side of the louver blade with the fixed groove upward along the first inclined plate or the second inclined plate.

[0009] (2) The bending resistance and the torsion resistance can be further improved by the circular arc segment, and the circular arc segment can also block water, preventing rainwater from being blown from the second inclined plate to the first inclined plate by the wind force, so that the rainwater is blown into the inner side of the louver blade with the fixed groove from the gap between the two louver blades.

[0010] (3) The bending resistance and the torsion resistance can be further improved by the bending reinforcing rib connected with the circular arc segment, the local stress concentration of the louver blade can be reduced in the case that the length span of the louver blade is large, the stability of the louver blade is enhanced, and the louver blade is convenient to assemble and position.

[0011] Preferably, the first inclined plate and the second inclined plate are parallel to each other, and the bottom end of the first inclined plate is higher than the top end of the second inclined plate.

[0012] The first inclined plate and the second inclined plate are parallel to each other, which is convenient for processing, and the bottom end of the first inclined plate is higher than the top end of the second inclined plate, so that the water blocking capacity can be improved by the circular arc segment between the first inclined plate and the second inclined plate, and the rainwater is prevented from moving upward along the second inclined plate under the influence of the wind force.

[0013] Preferably, the horizontal distance between the edge of the vertical segment of the bending reinforcing rib and the center of the circular arc segment is greater than the horizontal distance between the edge of the vertical segment of the first bending end and the center of the circular arc segment.

[0014] When the louver blade is fixed by the bending reinforcing rib on the louver blade, the first bending end is prevented from contacting the component for fixing, a margin is left for slight deformation of the louver blade, and noise is prevented from being generated after the louver blade collides with the component for fixing

[0015] Preferably, a self-tapping hole is arranged on the vertical segment of the bending reinforcing rib.

[0016] The self-tapping hole is convenient for reinforcing the middle part of the louver blade by the bending reinforcing rib.

[0017] A louver window made of the above louver blade, comprising two side plates, a plurality of louver blades, a plurality of screws, and at least one reinforcing rib fixing plate; the louver blades are horizontally placed, the plurality of louver blades are arranged at equal intervals in the vertical direction and have flush ends, the two side plates are vertically located at the two ends of the plurality of louver blades and are perpendicular to the plurality of louver blades, and the reinforcing rib fixing plate is vertically arranged on one side of the louver blade close to the bending reinforcing rib and is perpendicular to the plurality of louver blades.

[0018] The louver provided by the utility model can obtain the following beneficial effects:

[0019] (1) The two ends of the plurality of louver blades are fixed by the two side plates, and the middle part of the louver blades is fixed by the reinforcing rib fixing plate, so that the strength of the louver is enhanced, and the louver blades are prevented from being deformed and then falling off due to the influence of wind.

[0020] (2) The horizontal distance between the edge of the vertical section of the bending reinforcing rib in the louver blade and the center of the circular arc section is greater than the horizontal distance between the edge of the vertical section of the first bending end and the center of the circular arc section, so that the side of the louver blade close to the bending reinforcing rib and the side away from the bending reinforcing rib are not in contact with the reinforcing rib fixing plate and the side plate after installation, a margin is left for the stress deformation of the louver blade, the louver blade is prevented from producing whistling sound due to resonance after being blown by wind, and noise is prevented from being produced due to collision between the louver blade and the reinforcing rib fixing plate or the side plate after the louver blade is blown by wind.

[0021] (3) The plurality of louver blades are further reinforced by the reinforcing rib fixing plate, the rigidity and strength of the louver are enhanced without increasing the wall thickness of the product, the large-span louver and louver blade can bear greater load without affecting ventilation, shading and rain blocking, and the stability and safety of the louver under adverse weather conditions are ensured.

[0022] Preferably, the screw is penetrated through the side plate from the outside and fixed in the fixing groove of the louver blade, and the plurality of louver blades are fixed together by the side plate and the screw.

[0023] The louver blade is fixed by the side plate at the two ends of the louver blade and the screw from the fixing groove port at the two ends of the louver blade.

[0024] Preferably, the cross section of the side plate is in the shape of an I-beam, the two ends of the louver blade are located in the recesses of the side plate, and the heads of the screws are located in the recesses on the side of the side plate away from the louver blade.

[0025] The I-beam-shaped side plate can enhance the bending resistance and torsional resistance of the side plate, improve the strength of the side plate, and the recess on one side of the I-beam-shaped side plate is used for fixing the louver blade, and the other recess can shield the heads of the screws, so that the heads of the screws do not protrude from the side plate and affect the appearance and installation precision of the louver.

[0026] Preferably, the screw rods of the plurality of screws are respectively extended into the self-tapping holes in the plurality of louver blades after penetrating through the reinforcing rib fixing plate and are in threaded cooperation with the self-tapping holes, and the plurality of louver blades are fixed together by the reinforcing rib fixing plate and the screw.

[0027] The louver blade is fixed and reinforced by the reinforcing rib fixing plate from the middle part of the louver blade.

[0028] As preferred, the cross section of the reinforcing rib fixing plate is in the shape of a Chinese character "fang", the bent reinforcing ribs on the louver are attached to the flat side of the reinforcing rib fixing plate, and the head of the screw is located in the recess on the side of the reinforcing rib fixing plate away from the louver.

[0029] The reinforcing rib fixing plate in the shape of a Chinese character "fang" can increase the bending and torsion resistance of the reinforcing rib fixing plate, thereby improving the strength of the reinforcing rib fixing plate, and the flat side of the reinforcing rib fixing plate in the shape of a Chinese character "fang" is convenient to attach to the vertical side of the bent reinforcing rib, thereby facilitating installation, and the recess of the reinforcing rib fixing plate in the shape of a Chinese character "fang" can shield the head of the screw, thereby preventing the head of the screw from protruding and affecting the aesthetic appearance. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0031] Figure 1 is a schematic view of the three-dimensional structure of the louver in the present application;

[0032] Figure 2 is a side view of the louver in the present application;

[0033] Figure 3 is a schematic view of the three-dimensional structure of the front view angle of the louver in the present application;

[0034] Figure 4 is a schematic view of the three-dimensional structure of the rear view angle of the louver in the present application;

[0035] Figure 5 is a rear view of the louver in the present application;

[0036] Figure 6 is a sectional view of A-A in the present application Figure 5 ;

[0037] Figure 7 is an enlarged view of B in the present application Figure 6 ;

[0038] Figure 8 is an exploded view of the louver in the present application.

[0039] Fig. 1: louver, 11: first bent end, 12: first inclined plate, 13: second bent end, 14: second inclined plate, 15: circular arc segment, 16: fixing groove, 17: bent reinforcing rib, 171: self-tapping hole, 2: side plate, 3: reinforcing rib fixing plate, 4: screw. DETAILED DESCRIPTION

[0040] The technical scheme of the utility model will be described below in conjunction with the accompanying drawings. Figures 1-8 The technical scheme of the utility model will be described below in conjunction with the accompanying drawings.

[0041] In the description of the utility model, it should be noted that unless explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0042] Example 1

[0043] The technical scheme of the utility model will be described below in conjunction with the accompanying drawings. Figures 1-2 As shown in the drawings, the embodiment is a kind of reinforced louver, the louver 1 including first bent end 11, second bent end 13, first inclined plate 12, second inclined plate 14, circular arc segment 15, fixing groove 16 and bent reinforcing rib 17, the first bent end 11 is located at top, second bent end 13 is located at bottom, the cross section of first bent end 11, second bent end 13 and bent reinforcing rib 17 all presents L shape consisting of horizontal section and vertical section, the first inclined plate 12 is connected with the vertical section of first bent end 11 below first bent end 11, the second inclined plate 14 is connected with the vertical section of second bent end 13 above second bent end 13, the cross section of circular arc segment 15 presents circular arc, the first inclined plate 12 and second inclined plate 14 are connected by circular arc segment 15, fixing groove 16 is located at the side of the bottom surface of first inclined plate 12 and second inclined plate 14 respectively, the horizontal section of bent reinforcing rib 17 is connected with circular arc segment 15, the bending capacity and torsional properties of louver 1 are strengthened by first bent end 11 and second bent end 13, the rigidity of louver 1 is enhanced, rainwater can be prevented from entering the inside of louver 1 with fixing groove 16 upwards along first inclined plate 12 or second inclined plate 14, the bending capacity and torsional properties of louver 1 can be improved by circular arc segment 15, and water seepage can also be prevented, the bending capacity and torsional properties of louver can be further improved by bent reinforcing rib 17, and positioning is facilitated.

[0044] The technical scheme of the utility model will be described below in conjunction with the accompanying drawings. Figure 2As shown in the embodiment, the first inclined plate 12 and the second inclined plate 14 are parallel to each other, and the bottom end of the first inclined plate 12 is higher than the top end of the second inclined plate 14. The parallel first inclined plate 12 and the second inclined plate 14 are convenient for processing. The bottom end of the first inclined plate 12 is higher than the top end of the second inclined plate 14, and the circular arc segment 15 between the first inclined plate 12 and the second inclined plate 14 can improve the water blocking capacity and prevent rainwater from moving upward along the second inclined plate 14 due to wind force.

[0045] Referring to Figure 2 As shown in the embodiment, the horizontal distance between the vertical edge of the bending reinforcing rib 17 and the center of the circular arc segment 15 is greater than the horizontal distance between the vertical edge of the first bending end 11 and the center of the circular arc segment 15. When the louver blade 1 is fixed by the bending reinforcing rib 17 on the louver blade 1, the first bending end 11 is prevented from contacting the component for fixing, a margin is left for slight deformation of the louver blade 1, and noise is prevented from being generated due to collision between the louver blade 1 and the component for fixing.

[0046] Referring to Figure 2 As shown in the embodiment, the vertical segment of the bending reinforcing rib 17 is provided with a self-tapping hole 171. The self-tapping hole 171 is convenient for reinforcing the middle part of the louver blade 1 by the bending reinforcing rib 17.

[0047] Embodiment 2

[0048] Referring to Figure 1 As shown in the embodiment, the bending reinforcing rib 17 connected with the circular arc segment 15 is arranged in the middle part of the louver blade 1, which does not affect extrusion forming and simultaneously enhances the strength and rigidity of the louver blade 1. When the louver blade 1 is subjected to a bending force in the use process, the deflection is smaller, and the louver blade 1 is not easy to be bent and deformed. The load capacity of the louver blade 1 is enhanced, the stability of the structure is ensured, the torsional capacity of the louver blade 1 is enhanced, the torsional rigidity of the louver blade 1 profile is enhanced, the torsion angle is reduced, the louver blade 1 profile is prevented from being damaged due to excessive torsion, and storage and transportation are facilitated.

[0049] The following will be further described with reference to specific embodiments, referring to Figures 3-8As shown, the embodiment is a shutter made of reinforced louver blades 1, which comprises two side plates 2, a plurality of louver blades 1, a plurality of screws 4, and at least one reinforcing rib fixing plate 3. The louver blades 1 are horizontally placed, the plurality of louver blades 1 are arranged at equal intervals in the vertical direction and the two ends are flush. The two side plates 2 are vertically located at the two ends of the plurality of louver blades 1 and are perpendicular to the plurality of louver blades 1. The reinforcing rib fixing plate 3 is vertically placed on the side of the louver blade 1 close to the bending reinforcing rib 17 and is perpendicular to the plurality of louver blades 1. The two ends of the plurality of louver blades 1 are fixed by the two side plates 2, and the middle part of the louver blade 1 is fixed by the reinforcing rib fixing plate 3, which strengthens the strength of the shutter, leaves a margin for the stress deformation of the louver blade 1, prevents the louver blade 1 from producing whistling sound or collision noise, enhances the rigidity and strength of the shutter through the reinforcing rib fixing plate 3, and ensures the stability and safety of the shutter in severe weather conditions.

[0050] Referring to Figure 3 Figure 4 Or Figure 6 Or Figure 7 Or Figure 8 As shown, in the embodiment, the shanks of the plurality of screws 4 extend into the fixing grooves 16 at the two ends of the plurality of louver blades 1 from the two side plates 2 and are threadedly connected with the fixing grooves 16. The plurality of louver blades 1 are fixed together by the side plates 2 and the screws 4, and the louver blades 1 are fixed from the two ends by the side plates 2 and the screws 4.

[0051] Referring to Figure 3 Or Figure 8 As shown, in the embodiment, the cross section of the side plate 2 is in the shape of an I-beam, the two ends of the louver blade 1 are located in the recesses of the side plate 2, and the heads of the screws 4 are located in the recesses on the side of the side plate 2 away from the louver blade 1. The I-beam-shaped side plate 2 can enhance the bending resistance and torsional resistance of the side plate 2, improve the strength of the side plate 2, and at the same time, the recess on one side of the I-beam-shaped side plate 2 is used to fix the louver blade 1, and the other recess can shield the heads of the screws 4, preventing the heads of the screws 4 from protruding from the side plate 2 and affecting the aesthetics of the shutter and the accuracy during installation.

[0052] Referring to Figures 4-8 As shown in any figure, in the embodiment, the shanks of the plurality of screws 4 extend into the self-tapping holes 171 in the plurality of louver blades 1 after passing through the reinforcing rib fixing plate 3 and are threadedly connected with the self-tapping holes 171. The plurality of louver blades 1 are fixed together by the reinforcing rib fixing plate 3 and the screws 4, and the louver blades 1 are fixed and reinforced from the middle by the reinforcing rib fixing plate 3.

[0053] Referring to Figure 4 Or Figure 6 Or Figure 8As shown, in the embodiment, the cross section of the reinforcing rib fixing plate 3 is a Chinese character "Fang", the bending reinforcing rib 17 on the louver blade 1 is attached to the flat side of the reinforcing rib fixing plate 3, the head of the screw 4 is located in the recess on the side of the reinforcing rib fixing plate 3 away from the louver blade 1, the Chinese character "Fang" reinforcing rib fixing plate 3 can increase the bending resistance and torsional resistance of the reinforcing rib fixing plate 3, thereby improving the strength of the reinforcing rib fixing plate 3, and meanwhile, the flat side of the Chinese character "Fang" reinforcing rib fixing plate 3 is convenient for being attached to the vertical side of the bending reinforcing rib 17, thereby facilitating installation, and in addition, the recess of the Chinese character "Fang" reinforcing rib fixing plate 3 can shield the head of the screw 4, thereby preventing the head of the screw 4 from protruding and affecting the aesthetic appearance.

[0054] Embodiment 4

[0055] When the utility model is installed, the ends of the plurality of louver blades 1 are arranged in the recesses of the two side plates 2 respectively, so that all the louver blades 1 are parallel to each other and the two ends are aligned, then the screw rod of the screw 4 is inserted into the end of the fixing groove 16 on the louver blade 1 after the screw 4 passes through the side plate 2, because the horizontal distance from the edge of the vertical section of the bending reinforcing rib 17 to the center of the circular arc section 15 is greater than the horizontal distance from the edge of the vertical section of the first bending end 11 to the center of the circular arc section 15, so that when the louver blade 1 is fixed between the two side plates 2, the two vertical sides of the side plate 2 do not contact the side of the first bending end 11 or the second bending end 13 on the top of the louver blade 1, then the flat side of the reinforcing rib fixing plate 3 is tightly attached to the bending reinforcing rib 17 on all the louver blades 1, then the self-tapping hole 171 is drilled on the reinforcing rib fixing plate 3 on the louver blade 1 after the screw 4 passes through the reinforcing rib fixing plate 3, and the middle part of all the louver blades 1 is fixed together by the reinforcing rib fixing plate 3 and the screw 4, so that the two ends of the plurality of louver blades 1 are fixed by the two side plates 2, and the middle part of the plurality of louver blades 1 is fixed by the reinforcing rib fixing plate 3, so that the end and the middle part of the long strip-shaped louver blade 1 are fixed during use, thereby preventing the appearance of the louver blade 1 from being rigidly deformed and falling off, because the horizontal distance from the edge of the vertical section of the bending reinforcing rib 17 to the center of the circular arc section 15 is greater than the horizontal distance from the edge of the vertical section of the first bending end 11 to the center of the circular arc section 15, so that the inside and outside of the louver blade 1 in the louver window do not contact the side plate 2 and the reinforcing rib fixing plate 3, thereby leaving a margin for the louver blade 1 to be deformed by wind force, preventing noise caused by friction and collision between the louver blade 1 and the side plate 2 or the reinforcing rib fixing plate 3, or whistling sound caused by loosening of the louver blade 1.

[0056] The directions mentioned in the utility model, for example, "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0057] The standard parts used in the present application file can be purchased from the market, and can be ordered according to the description and drawings.

[0058] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A type of reinforced louver, characterized in that: The louver (1) includes a first bent end (11), a second bent end (13), a first inclined plate (12), a second inclined plate (14), an arc segment (15), a fixing groove (16), and a bent reinforcing rib (17). The first bent end (11) is located at the top, and the second bent end (13) is located at the bottom. The cross-sections of the first bent end (11), the second bent end (13), and the bent reinforcing rib (17) are all L-shaped, consisting of a horizontal segment and a vertical segment. The first inclined plate (12) is located at the first bent end. The lower part of the end (11) is connected to the vertical section of the first bent end (11), the second inclined plate (14) is located above the second bent end (13) and is connected to the vertical section of the second bent end (13), the cross section of the arc section (15) is arc-shaped, the first inclined plate (12) and the second inclined plate (14) are connected through the arc section (15), the fixing groove (16) is located on one side of the bottom surface of the first inclined plate (12) and the second inclined plate (14), and the horizontal section of the bent reinforcing rib (17) is connected to the arc section (15).

2. The reinforced louver blade according to claim 1, characterized in that: The first inclined plate (12) and the second inclined plate (14) are parallel to each other, and the bottom end of the first inclined plate (12) is higher than the top end of the second inclined plate (14).

3. The reinforced louver according to claim 1, characterized in that: The horizontal distance between the edge of the vertical section of the bent reinforcing rib (17) and the center of the arc section (15) is greater than the horizontal distance between the edge of the vertical section of the first bent end (11) and the center of the arc section (15).

4. The reinforced louver blade according to claim 1, characterized in that: The vertical section of the bent reinforcing rib (17) is provided with a through self-tapping hole (171).

5. A louver made using the reinforceable louvers as described in any one of claims 1-4, characterized in that: It includes two side plates (2), several louvers (1), several screws (4), and at least one reinforcing rib fixing plate (3); the louvers (1) are placed horizontally, and the several louvers (1) are arranged at equal intervals in the vertical direction with their ends flush; the two side plates (2) are both vertically located at both ends of the several louvers (1) and are perpendicular to each other; the reinforcing rib fixing plate (3) is vertically arranged on the side of the louvers (1) near the bent reinforcing rib (17) and is perpendicular to each other.

6. The venetian blind according to claim 5, characterized in that: The screw (4) passes through the side plate (2) from the outside and is fixed in the fixing groove (16) of the louver (1). Several louvers (1) are fixed together by the side plate (2) and the screw (4).

7. The venetian blind according to claim 6, characterized in that: The side plate (2) has an I-shaped cross section. Both ends of the louver (1) are located in the recess of the side plate (2), and the heads of the screws (4) are located in the recess of the side plate (2) away from the louver (1).

8. The venetian blind according to claim 5, characterized in that: After the screws (4) pass through the reinforcing rib fixing plate (3), they extend into the self-tapping holes (171) on the louvers (1) and are threaded into the self-tapping holes (171). The louvers (1) are fixed together by the reinforcing rib fixing plate (3) and the screws (4).

9. The venetian blind according to claim 8, characterized in that: The cross-section of the reinforcing rib fixing plate (3) is U-shaped. The bent reinforcing rib (17) on the louver (1) fits against the straight side of the reinforcing rib fixing plate (3). The head of the screw (4) is located in the recess of the reinforcing rib fixing plate (3) away from the louver (1).

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