Roof panel hidden type fixing system

Abstract

The invention relates to the field of building roofs, and particularly discloses a hidden fixing system for a roof panel, which is characterized in that through a clamping part with a first U-shaped part and a second U-shaped part and a sliding bracket which is matched with the clamping part and is provided with a third U-shaped part and a fourth U-shaped part, a panel body is conveniently clamped with the sliding bracket; the clamping part with the double U-shaped parts and the sliding support enable the panel body and the sliding support to have good connection stability and larger thermal expansion deformation capacity, and the problem that stress concentration is prone to occurring when the panel body expands with heat and contracts with cold is solved. The sliding columns which penetrate through the sliding support and abut against the elastic clamping pins are arranged, so that the panel body can longitudinally move relative to the sliding support, the deformation capacity of the panel body during thermal expansion is improved, meanwhile, the clamping strips, the sliding support and the panel body are connected in series and limited through cooperation of the sliding columns and the elastic clamping pins, and the stability of the panel body is improved. And the connection stability is improved while the installation is convenient.

Description

Technical Field

[0001] The present invention relates to the field of building roofs, and more particularly to a hidden fixing system for roof panels. Background Art

[0002] Traditional roof panels are fixed with self-tapping screws. Although self-tapping screws can provide direct mechanical bite force and wind-resistant performance, their rigid connection characteristics will cause significant defects when the roof panels are subjected to thermal expansion and contraction. When metal or composite roofs undergo linear expansion or contraction due to temperature differences, stress concentration areas will form around the screw holes. Under long-term action, it is easy to cause cracking of the panel paint layer, fatigue fracture of the base material, or loosening of the screw connection.

[0003] A fixing system with an elastic structure or sliding mechanism is needed to overcome the stress concentration problem caused by thermal expansion and effectively alleviate the material deformation problem caused by temperature changes. At the same time, it is necessary to solve the problem of decreased connection stability of the roof panels due to elastic connections and sliding connections, and improve the connection stability and wind resistance of the roof panels. Summary of the Invention

[0004] 1. Technical problems to be solved

[0005] In view of the problems existing in the prior art, the object of the present invention is to provide a hidden fixing system for roof panels, which can realize sliding connection and elastic connection between the panel body and the sliding bracket.

[0006] 2. Technical solution

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A hidden fixing system for a roof panel includes a panel body, a clamping portion is provided at one end of the panel body, a sliding bracket is clamped on the clamping portion, and the sliding bracket is fixedly connected to the building base by self-tapping screws. The sliding bracket is provided with a third U-shaped portion with an opening downward and a fourth U-shaped portion adjacent to the third U-shaped portion and with an opening upward. The clamping portion is provided with a first U-shaped portion nested in the third U-shaped portion and a second U-shaped portion adjacent to the first U-shaped portion and covered on the outer wall of the fourth U-shaped portion; a clamping strip is clamped on the outer side of the third U-shaped portion, and vertically equidistantly distributed clamping grooves are provided on the inner wall of the clamping strip, and a clamping tooth nested in the clamping groove is fixedly connected to the outer wall of the third U-shaped portion.

[0009] As a further improvement of the present invention, a first arc-shaped portion is provided on the vertical side wall of the first U-shaped portion away from the second U-shaped portion, and the first arc-shaped portion extends toward the inside of the first U-shaped portion.

[0010] As a further improvement of the present invention, a second arc portion is provided on one side of the panel body close to the clamping portion, and the upper end of the second arc portion extends into the first U-shaped portion and is close to one side of the second U-shaped portion.

[0011] As a further improvement of the present invention, the clamping strip is clamped to the top wall of the third U-shaped portion through an elastic clamping pin, and a middle hole for inserting the elastic clamping pin is provided on the top wall of the third U-shaped portion.

[0012] As a further improvement of the present invention, a sliding column is slidably connected in the middle hole, the upper end of the sliding column is in contact with the elastic latch, and a longitudinal groove for longitudinal sliding of the sliding column is provided on the top wall of the first U-shaped portion.

[0013] As a further improvement of the present invention, the clamping strip is a long strip with a U-shaped cross section, the clamping slot is a groove running through the clamping strip, and the cross sections of both the clamping teeth and the clamping slot are triangular or isosceles trapezoidal.

[0014] As a further improvement of the present invention, the sliding bracket also includes a horizontal portion integrally formed with the third U-shaped portion, a rib plate is fixedly connected to the horizontal portion, and a left end of the rib plate is fixedly connected to the side wall of the third U-shaped portion.

[0015] As a further improvement of the present invention, a mounting hole for accommodating an elastic bayonet is provided on the inner wall of the clip strip. The elastic bayonet includes a fixing column fixedly connected to the inner wall of the mounting hole. The fixing column is slidably connected to a sliding cylinder. A coil spring is provided between the sliding cylinder and the inner wall of the mounting hole. The sliding cylinder is plugged and fixed to the middle hole.

[0016] As a further improvement of the present invention, the middle hole passes through the third U-shaped portion, and the cross-sections of the middle hole and the sliding column are both I-shaped.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] (1) The present invention facilitates the connection between the panel body and the sliding bracket by means of a clamping portion having a first U-shaped portion and a second U-shaped portion, and a sliding bracket cooperating with the clamping portion and having a third U-shaped portion and a fourth U-shaped portion. Moreover, when the panel body is deformed due to thermal expansion and contraction, the clamping portion having double U-shaped portions and the sliding bracket enable the panel body and the sliding bracket to have better connection stability and greater thermal expansion and deformation capacity, thereby achieving better wind pressure resistance and overcoming the problem of stress concentration when the panel body is subject to thermal expansion and contraction.

[0020] (2) The present invention constrains and limits the third U-shaped portion wrapped around the first U-shaped portion by providing a clip on the outside of the third U-shaped portion, thereby further improving the connection stability between the panel body and the sliding bracket.

[0021] (3) The present invention provides an elastic latch fixed on the card strip, thereby realizing the rapid installation and positioning of the card strip and the sliding bracket, further improving the connection stability between the card strip and the sliding bracket, and improving the overall structural stability of the fixing system.

[0022] (4) The present invention provides a sliding column that passes through the sliding bracket and abuts against the elastic latch, so that the panel body can move longitudinally relative to the sliding bracket, thereby improving the deformation capacity of the panel body during thermal expansion. At the same time, the sliding column and the elastic latch cooperate to realize the serial connection limit of the card strip, the sliding bracket and the panel body, which facilitates installation and improves the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the transverse cross-sectional structure of the present invention;

[0025] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0026] Figure 4 for Figure 3 An enlarged structural diagram of the elastic bayonet position;

[0027] Figure 5 This is a schematic diagram of the exploded assembly structure of the panel body and the sliding bracket in the present invention;

[0028] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at B in the middle;

[0029] Figure 7 for Figure 5 Schematic diagram of the enlarged structure at C in the middle;

[0030] Figure 8 Schematic diagram of deformation and stress of the clamping portion during thermal expansion in the present invention;

[0031] Figure 9 Schematic diagram of the movement of the elastic latch and the sliding column during installation in the present invention.

[0032] Explanation of the numbers in the figure: 1. Panel body; 101. Clamping part; 102. Raised part; 103. First U-shaped part; 104. Second U-shaped part; 105. First arc-shaped part; 106. Second arc-shaped part; 107. Longitudinal groove; 2. Sliding bracket; 201. Third U-shaped part; 202. Fourth U-shaped part; 203. Clamping tooth; 204. Middle hole; 3. Self-tapping screw; 4. Clamping strip; 401. Clamping slot; 402. Mounting hole; 5. Building base; 6. Rib; 7. Elastic latch; 701. Fixed column; 702. Sliding cylinder; 703. Coil spring; 8. Sliding column. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances.

[0036] See also Figures 1-8 In the first embodiment of the present invention, a hidden fixing system for a roof panel includes a panel body 1, a clamping portion 101 is provided at one end of the panel body 1, a sliding bracket 2 is clamped on the clamping portion 101, and the sliding bracket 2 is fixedly connected to the building base 5 by a self-tapping screw 3, the sliding bracket 2 is provided with a third U-shaped portion 201 with an opening downward and a fourth U-shaped portion 202 adjacent to the third U-shaped portion 201 and with an opening facing upward, the clamping portion 101 is provided with a first U-shaped portion 103 nested in the third U-shaped portion 201 and a second U-shaped portion 104 adjacent to the first U-shaped portion 103 and covered on the outer wall of the fourth U-shaped portion 202; a clamping strip 4 is clamped on the outer side of the third U-shaped portion 201, and vertically equidistantly distributed clamping grooves 401 are opened on the inner wall of the clamping strip 4, and a clamping tooth 203 nested in the clamping groove 401 is fixedly connected to the outer wall of the third U-shaped portion 201.

[0037] Compared with the traditional roof panel fixing device, the present invention makes it easy to clamp the panel body 1 with the sliding bracket 2 through the clamping portion 101 having a first U-shaped portion 103 and a second U-shaped portion 104, and the sliding bracket 2 cooperating with the clamping portion 101 and having a third U-shaped portion 201 and a fourth U-shaped portion 202. Moreover, when the panel body 1 is deformed due to thermal expansion and contraction, the clamping portion 101 with double U-shaped portions and the sliding bracket 2 make the panel body 1 and the sliding bracket 2 have better connection stability and greater thermal expansion and deformation capabilities, thereby achieving better wind pressure resistance and reducing the probability of stress concentration on the panel body 1 during thermal expansion and contraction. At the same time, by providing the clamping strip 4 on the outside of the third U-shaped portion 201, the third U-shaped portion 201 wrapped around the first U-shaped portion 103 is constrained and limited, thereby further improving the connection stability of the panel body 1 and the sliding bracket 2.

[0038] It should be noted that a raised portion 102 is provided at one end of the panel body 1 away from the clamping portion 101. When multiple panel bodies 1 are installed, the raised portion 102 is covered on the outside of the clamping portion 101 to prevent rainwater from contacting the sliding bracket 2 and the self-tapping screw 3. In addition, the panel body 1 includes an integrally hot-pressed substrate and a thermoplastic plate. One end of the panel body 1 is fixed by the sliding bracket 2, and the other end is fixed to the adjacent panel body 1 by hot melt fixing.

[0039] See also Figure 3 and Figure 6 A first arc-shaped portion 105 is provided on the vertical side wall of the first U-shaped portion 103 away from the second U-shaped portion 104 , and the first arc-shaped portion 105 extends toward the inside of the first U-shaped portion 103 .

[0040] Specifically, by providing the first arc-shaped portion 105, when the clamping portion 101 is subjected to force, the first U-shaped portion 103 has a larger elastic deformation, thereby reducing the probability of the clamping portion 101 escaping from the third U-shaped portion 201 due to deformation, further improving the stability of the connection, and thus improving the overall wind pressure resistance of the roof panel.

[0041] See also Figure 3 and Figure 6 A second arc-shaped portion 106 is provided on the panel body 1 near the clamping portion 101 . The upper end of the second arc-shaped portion 106 extends into the first U-shaped portion 103 and is close to the second U-shaped portion 104 .

[0042] Specifically, when the clamping portion 101 is deformed by force, the first arc portion 105 and the second arc portion 106 are deformed and abut against the inner wall of the first U-shaped portion 103, preventing the clamping portion 101 from continuing to deform, further reducing the probability of the clamping portion 101 escaping from the third U-shaped portion 201.

[0043] See also Figure 3 and Figure 7 The card strip 4 is a long strip with a U-shaped cross section, the card slot 401 is a groove running through the card strip 4, and the cross sections of the card teeth 203 and the card slot 401 are both triangular or isosceles trapezoidal.

[0044] Specifically, the latch teeth 203 and the latch groove 401 with triangular or isosceles trapezoidal cross-sections enable the latching strip 4 to have a better latching effect with the sliding bracket 2. It should be noted that the latch teeth 203 have a variety of specifications, more specifically, including type 1: tooth height 5mm (suitable for wind pressure ≤0.6kPa), type 2: tooth height 8mm (suitable for 0.6kPa<wind pressure ≤1.0kPa) and type 3: tooth height 12mm (suitable for wind pressure>1.0kPa). Technical personnel in this field can select the sliding bracket 2 and latching strip 4 with corresponding tooth height based on the local environment, which has better adaptability.

[0045] See also Figure 1 and Figure 3 The sliding bracket 2 also includes a horizontal portion integrally formed with the third U-shaped portion 201 , and a rib 6 is fixedly connected to the horizontal portion. The left end of the rib 6 is fixedly connected to the side wall of the third U-shaped portion 201 .

[0046] Specifically, by providing the ribs 6 , when the clamping portion 101 is deformed, the ribs 6 provide support to the sliding bracket 2 , thereby increasing the structural stability and wind resistance of the sliding bracket 2 .

[0047] In the second embodiment of the present invention, see Figure 3 、 Figure 4 、 Figure 7 and Figure 9 The card strip 4 is engaged with the top wall of the third U-shaped portion 201 through the elastic card pin 7. The top wall of the third U-shaped portion 201 is provided with a middle hole 204 for the elastic card pin 7 to be inserted.

[0048] Specifically, when installing the card strip 4, the card slot 401 of the card strip 4 is aligned with the card tooth 203 of the third U-shaped portion 201, and then the card strip 4 is pushed in longitudinally. When pushed to the installation position, the elastic card pin 7 is inserted into the middle hole 204, thereby realizing the card connection and fixation of the card strip 4, and further improving the connection stability between the card strip 4 and the sliding bracket 2.

[0049] See also Figure 4 and Figure 7 The inner wall of the card strip 4 is provided with a mounting hole 402 for accommodating the elastic bayonet 7. The elastic bayonet 7 includes a fixing column 701 fixedly connected to the inner wall of the mounting hole 402. The fixing column 701 is slidably connected to a sliding cylinder 702. A coil spring 703 is provided between the sliding cylinder 702 and the inner wall of the mounting hole 402. The sliding cylinder 702 is plugged and fixed to the middle hole 204.

[0050] Specifically, when the clamping strip 4 slides on the sliding bracket 2, the sliding cylinder 702 compresses the coil spring 703, and the sliding cylinder 702 is completely received in the mounting hole 402. When the mounting hole 402 and the middle hole 204 are opposite to each other, under the action of the coil spring 703, the sliding cylinder 702 is inserted into the middle hole 204.

[0051] See also Figure 4 and Figure 7 The sliding column 8 is slidably connected in the middle hole 204, and a longitudinal groove 107 for the sliding column 8 to slide longitudinally is opened on the top wall of the first U-shaped portion 103.

[0052] Specifically, when the sliding cylinder 702 is inserted into the middle hole 204, the sliding column 8 is squeezed so that the sliding column 8 is inserted into the longitudinal groove 107 of the first U-shaped portion 103. When the panel body 1 is deformed by force or heat, the sliding column 8 slides longitudinally in the longitudinal groove 107, so that the panel body 1 can be longitudinally displaced relative to the sliding bracket 2, thereby improving the longitudinal deformation capacity of the panel body 1.

[0053] See also Figure 4 and Figure 7 The middle hole 204 passes through the third U-shaped portion 201 , and the cross-sections of the middle hole 204 and the sliding column 8 are both I-shaped.

[0054] Specifically, the sliding post 8 can move up and down in the middle hole 204 , so as to facilitate the clamping installation of the first U-shaped portion 103 and the third U-shaped portion 201 and avoid interference.

[0055] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A hidden fixing system for roof panels, characterized in that: The invention comprises a panel body (1), wherein one end of the panel body (1) is provided with a clamping portion (101), the clamping portion (101) is clamped with a sliding bracket (2), the sliding bracket (2) is fixedly connected to the building base (5) by a self-tapping screw (3), the sliding bracket (2) is provided with a third U-shaped portion (201) with an opening downward and a fourth U-shaped portion (202) adjacent to the third U-shaped portion (201) and with an opening upward, the clamping portion (101) is provided with a third U-shaped portion (201) nested in the third U-shaped portion (201). A first U-shaped portion (103) within the U-shaped portion (201) and a second U-shaped portion (104) adjacent to the first U-shaped portion (103) and covering the outer wall of the fourth U-shaped portion (202); a clamping strip (4) is clamped on the outer side of the third U-shaped portion (201), and vertically equidistantly distributed clamping grooves (401) are provided on the inner wall of the clamping strip (4); and a clamping tooth (203) is fixedly connected to the outer wall of the third U-shaped portion (201) and is nested in the clamping groove (401).

2. A hidden fixing system for roof panels according to claim 1, characterized in that: A first arc-shaped portion (105) is provided on a vertical side wall of the first U-shaped portion (103) away from the second U-shaped portion (104), and the first arc-shaped portion (105) extends toward the inside of the first U-shaped portion (103).

3. A hidden fixing system for roof panels according to claim 2, characterized in that: The panel body (1) is provided with a second arc-shaped portion (106) on a side close to the clamping portion (101), and the upper end of the second arc-shaped portion (106) extends into the first U-shaped portion (103) and is close to the side of the second U-shaped portion (104).

4. A hidden fixing system for roof panels according to claim 3, characterized in that: The clamping strip (4) is clamped to the top wall of the third U-shaped portion (201) via an elastic clamping pin (7), and a middle hole (204) for inserting the elastic clamping pin (7) is provided on the top wall of the third U-shaped portion (201).

5. A hidden fixing system for roof panels according to claim 4, characterized in that: A sliding column (8) is slidably connected in the middle hole (204), and the upper end of the sliding column (8) abuts against the elastic latch (7). A longitudinal groove (107) for longitudinal sliding of the sliding column (8) is provided on the top wall of the first U-shaped portion (103).

6. A hidden fixing system for roof panels according to claim 1, characterized in that: The clamping strip (4) is a long strip with a U-shaped cross section, the clamping slot (401) is a groove running through the clamping strip (4), and the cross sections of both the clamping teeth (203) and the clamping slot (401) are triangular or isosceles trapezoidal.

7. The hidden fixing system for roof panels according to claim 1, characterized in that: The sliding bracket (2) further comprises a horizontal portion integrally formed with the third U-shaped portion (201), a rib plate (6) being fixedly connected to the horizontal portion, and a left end of the rib plate (6) being fixedly connected to a side wall of the third U-shaped portion (201).

8. The hidden fixing system for roof panels according to claim 4, characterized in that: The inner wall of the clamping strip (4) is provided with a mounting hole (402) for accommodating an elastic clamping pin (7). The elastic clamping pin (7) includes a fixing column (701) fixedly connected to the inner wall of the mounting hole (402). The fixing column (701) is slidably connected to a sliding cylinder (702). A coil spring (703) is provided between the sliding cylinder (702) and the inner wall of the mounting hole (402). The sliding cylinder (702) is plugged and fixed to the middle hole (204).

9. The hidden fixing system for roof panels according to claim 5, characterized in that: The middle hole (204) passes through the third U-shaped portion (201), and both the middle hole (204) and the sliding column (8) have I-shaped cross-sections.

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