Polyurethane composite material corner brace

Abstract

The utility model discloses a polyurethane composite material corner connector which comprises two connecting pieces forming a right angle, each connecting piece is provided with a plurality of parallel protruding strips, the protruding strips on each connecting piece are parallel to the other connecting piece, a groove is formed between every two adjacent protruding strips, the width of each groove is equal to that of each protruding strip, and the width of each groove is larger than that of each protruding strip. The depth of the groove is equal to the thickness of the protruding strip, the protruding thorn protruding towards the groove in the frame is clamped in the groove, the connecting effect of the corner connector and the frame is good, the corner connector and the frame are both made of polyurethane composite materials, the heat expansion and cold contraction rates of the corner connector and the frame are consistent, the risk of assembly failure caused by deformation is reduced, and meanwhile the service life is longer.

Description

Technical Field

[0001] The utility model belongs to the technical field of solar photovoltaic panel frames, and more specifically relates to a polyurethane composite material corner code. Background Art

[0002] Currently, solar photovoltaic panels are transitioning from the original aluminum alloy frames to polyurethane composite frames, while most of the corner brackets connecting the frames are still made of aluminum alloy corner brackets or thermoplastic injection molded corner brackets.

[0003] When aluminum alloy corner brackets are used in polyurethane composite material frames, due to the different materials, the thermal expansion and contraction rates of the two are inconsistent in high temperature environments, which can easily lead to failure of the assembly of the corner brackets and the frame, affecting the normal use of the solar panel.

[0004] Although the common thermoplastic injection molded angle brackets have low cost, they have poor tensile strength and poor thermal aging resistance, resulting in a short lifespan. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a polyurethane composite material corner bracket, which has a better connection effect with a frame and a longer service life.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a polyurethane composite angle code, comprising two right-angled connecting pieces, each of which is provided with a plurality of mutually parallel convex strips, and the convex strips on each connecting piece are parallel to the other connecting piece, and grooves are formed between adjacent convex strips, the width of the grooves is equal to the width of the convex strips, the depth of the grooves is equal to the thickness of the convex strips, and the grooves are clamped with spurs protruding toward the grooves in the frame.

[0007] Furthermore, the thickness of the convex strip protruding from the surface of the connecting piece is 0.2-0.3 times the thickness of the connecting piece.

[0008] Furthermore, a thickened portion is provided at the right-angle connection between the two connecting pieces, and the thickness of the thickened portion is equal to the thickness of the protruding convex strip.

[0009] Furthermore, the thickness of the connecting piece is 0.15-0.2 times the width of the connecting piece.

[0010] Furthermore, the polyurethane composite material corner code is composite-injection-molded by polyurethane and glass fiber.

[0011] Compared with the prior art, the beneficial effect of the utility model is that the polyurethane composite corner code is used as follows: after two connecting sheets are respectively inserted into the solar frame, a steel needle (or steel nail) is used to align the groove position of the internal corner code from the outside of one side of the frame, and then the steel needle passes through the side wall and then enters the connecting sheet from the groove, and when the steel needle passes through the frame, the part of the frame facing the groove will form a spur due to the puncture of the steel needle, and the spur will just fit into the groove and cooperate with the groove, and then the steel needle is immersed in the connecting sheet (it can also pass through the connecting sheet and then pass out from the other side of the frame), thereby achieving a fixed connection between the corner code and the frame, and the connection effect of the corner code and the frame is improved through the connection of the steel needle and the cooperation between the groove and the spur, and the connection strength of the corner code and the frame is improved, and the polyurethane composite material is the same as the frame, and its thermal expansion and contraction rate is consistent, which reduces the risk of assembly failure caused by deformation, and the service life is the same as the frame, and even because it is located inside the frame, the service life may be longer than the frame exposed to wind and sun. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the side structure of the polyurethane composite material corner bracket of the utility model;

[0013] Figure 2 This is a schematic diagram of the side structure of the connection between the corner bracket and the frame of the polyurethane composite material of the utility model;

[0014] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0015] Figure 4 This is a schematic diagram of the front structure of the polyurethane composite material corner bracket connected to the frame of the utility model;

[0016] Figure 5 The utility model is a structural schematic diagram of another connection method between the polyurethane composite material corner bracket and the frame.

[0017] Figure numerals: connecting piece 1; convex strip 2; groove 3; frame 4; thickened portion 5; steel needle 6; angle code 7. DETAILED DESCRIPTION

[0018] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present invention.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" and "a number" is two or more, unless otherwise clearly and specifically defined.

[0020] Reference Figures 1 to 5 The utility model is further described.

[0021] A polyurethane composite angle code comprises two right-angled connecting pieces 1, each of which is provided with a plurality of mutually parallel convex strips 2, and the convex strips 2 on each connecting piece 1 are parallel to the other connecting piece 1, and grooves 3 are formed between adjacent convex strips 2, the width of the grooves 3 is equal to the width of the convex strips 2, the depth of the grooves 3 is equal to the thickness of the convex strips 2, and the grooves 3 are clamped with spurs protruding toward the grooves 3 in a frame 4.

[0022] In this example, preferably, the polyurethane composite material corner code 7 is composite injection-molded by polyurethane and glass fiber.

[0023] like Figures 1 to 4 As shown, the method of using the polyurethane composite angle code 7 is as follows: after inserting the two connecting pieces 1 into the solar frame 4 respectively, use a steel needle 6 (or a steel nail) to align the groove position of the internal angle code 7 from the outside of one side of the frame 4, and then the steel needle 6 passes through the side wall and then penetrates into the connecting piece 1 from the groove 3, and when the steel needle 6 passes through the frame 4, the part of the frame 4 facing the groove 3 will form a thorn due to the puncture of the steel needle 6, and the thorn will just fit into the groove 3 and cooperate with the groove 3, and then the steel needle 6 is immersed in the connecting piece 1 (it can also pass through the connecting piece 1 and then pass out from the other side of the frame 4), thereby realizing the fixed connection between the angle code 7 and the frame 4.

[0024] The connection effect of the corner code 7 and the frame 4 is improved by the connection of the steel needle 6 and the cooperation of the groove 3 and the spur, and the connection strength of the corner code 7 and the frame 4 is improved. Moreover, the corner code 7 and the frame 4 are made of the same polyurethane composite material, and their thermal expansion and contraction rates are consistent, which reduces the risk of assembly failure due to deformation. At the same time, the service life is the same as that of the frame 4. In fact, because it is located inside the frame 4, the service life may be longer than the frame 4 exposed to wind and sun.

[0025] Preferably, the steel needle 6 can also directly pass through the connecting piece 1 and penetrate the other side of the frame 4 .

[0026] like Figure 4 As shown, in this embodiment, preferably, a plurality of steel needles 6 are arranged at intervals in each groove 3, and the steel needles 6 between adjacent grooves 3 are arranged in a staggered manner.

[0027] Preferably in this example, the thickness of the convex strip 2 protruding from the surface of the connecting piece 1 is 0.2-0.3 times the thickness of the connecting piece 1 .

[0028] like Figure 1 As shown, in this example, preferably, a thickened portion 5 is provided at the right-angle connection of the two connecting sheets 1 , and the thickness of the thickened portion 5 is equal to the protruding thickness of the convex strip 2 .

[0029] Preferably in this example, the thickness of the connecting piece 1 is 0.15-0.2 times the width of the connecting piece 1 .

[0030] like Figure 5 As shown, in this example, another way of connecting the corner code 7 and the frame 4 is that the steel needle 6 is inserted from the other side of the frame 4, passes through the connecting piece 1 and then passes out from one side of the frame 4, and the steel needle 6 passes through the connecting piece 1 from the groove 3, and the diameter of the steel needle 6 is just or slightly smaller than the width of the groove 3, and after the end of the steel needle 6 passes out from one side of the frame 4, a hammer or other knocking tool is used to flatten the end of the steel needle 6 that passes out, so that the flattened part is pressed down on the surface of the frame 4, and the part of the inside of the frame 4 facing the groove 3 and located around the steel needle 6 is embedded in the groove 3, thereby realizing the connection between the corner code 7 and the frame 4.

[0031] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A polyurethane composite angle bracket, characterized in that: It comprises two connecting pieces at right angles, each of which is provided with a plurality of convex strips parallel to each other, and the convex strips on each connecting piece are parallel to the other connecting piece, and grooves are formed between adjacent convex strips, the width of the grooves is equal to the width of the convex strips, the depth of the grooves is equal to the thickness of the convex strips, and the spurs protruding toward the grooves in the frame are clamped in the grooves.

2. The polyurethane composite angle bracket according to claim 1, characterized in that: The thickness of the convex strip protruding from the surface of the connecting piece is 0.2-0.3 times the thickness of the connecting piece.

3. The polyurethane composite material corner bracket according to claim 2, characterized in that: A thickened portion is provided at the right-angle connection of the two connecting pieces, and the thickness of the thickened portion is equal to the thickness of the protruding convex strip.

4. The polyurethane composite material corner bracket according to claim 3, characterized in that: The thickness of the connecting piece is 0.15-0.2 times the width of the connecting piece.

5. The polyurethane composite angle bracket according to claim 4, characterized in that: The polyurethane composite material corner bracket is formed by composite injection molding of polyurethane and glass fiber.

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