Double-edgefold rounded corner composite board

Abstract

The utility model provides a double-edgefold fillet composite board, which belongs to the technical field of auxiliary education products and comprises a panel, an interlayer and a back board which are sequentially bonded from front to back, a plurality of first edgefolds bent backwards are arranged in the circumferential direction of the panel, the first edgefolds are arranged in the circumferential direction of the interlayer in a surrounding manner, and an edge covering structure extending forwards is arranged in the circumferential direction of the back board. The edge covering structure surrounds the peripheries of the multiple first folded edges, and the outer side of the corner of the edge covering structure is provided with an arc face. According to the double-edgefold fillet composite board, the panel is bonded to the front end face of the interlayer, and the first edgefolds in the circumferential direction of the panel are arranged on the periphery of the interlayer in a surrounding mode. The back plate is bonded to the rear end face of the interlayer, an edge covering structure in the circumferential direction of the back plate is arranged on the peripheries of the first folded edges in a surrounding mode, and meanwhile the outer side of the corner of the edge covering structure is provided with an arc face. According to the double-edgefold fillet composite board, the overall structural strength is better, the corners of the wrapping edges are provided with the arc surfaces, and the hidden danger that people are scratched by right angles can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of auxiliary education products, and more specifically, relates to a double-folded edge and rounded corner composite board. Background Art

[0002] Composite boards usually consist of a face sheet, a core sheet and a back sheet, and the three layers are combined in sequence to form a composite structural board. When a composite board is used for teaching, it can be used as a writing board.

[0003] At present, in the prior art, composite boards used for teaching are usually edged on the periphery. This edge-binding method has poor structural strength and is easy to fall off. In addition, the corners of the edge are mostly right angles, which are sharp and unsightly. Utility Model Content

[0004] The utility model aims to provide a double-folded edge rounded composite board, aiming to solve the problems that the composite board has a poor edge structure strength and is easy to fall off, and the right angles of the edge are sharp and unsightly.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a double-folded-edge rounded-corner composite panel, comprising a panel, an interlayer and a back panel bonded in sequence from front to back, the panel is circumferentially provided with a plurality of first folded edges bent backwards, the plurality of first folded edges are arranged around the circumference of the interlayer, the back panel is circumferentially provided with a forward-extending edging structure, the edging structure is arranged around the outer periphery of the plurality of first folded edges, and the outer side of the corner of the edging structure has an arc surface.

[0006] In a possible implementation, the panel, the interlayer and the back panel are bonded in sequence by polyurethane adhesive.

[0007] In a possible implementation, a plurality of the first folded edges are integrally formed in the circumference of the panel, and adjacent first folded edges are perpendicular to each other.

[0008] In a possible implementation, the edging structure includes a plurality of second folded edges and a plurality of corner guards, wherein the plurality of second folded edges are arranged circumferentially on the back plate and extend forward, the arc surface is located on the outer side surface of the corner guard, and the corner guard is arranged between two adjacent second folded edges.

[0009] In a possible implementation, the inner side of the corner protector has a right-angle structure, and the right-angle structure is arranged around the ends of two adjacent first folded edges.

[0010] In a possible implementation, the lower end surface of the corner protector and the lower end surface of the back plate are located in the same plane.

[0011] In a possible implementation, the second folded edge includes a first bending section and a second bending section that are integrally formed, the first bending section is arranged at the circumference of the back plate and extends forward, and the second bending section is arranged at the front end of the first bending section and extends inward.

[0012] In a possible implementation manner, the upper end surface of the second bending section, the upper end surface of the corner protector, and the upper end surface of the panel are located in the same plane.

[0013] In a possible implementation, plug-in blocks are respectively provided at both ends of the corner guard, the first folded edge and the second folded edge on the same side cooperate with the back plate to form a plug-in channel, and the plug-in block is inserted into the end portion corresponding to the plug-in channel.

[0014] In a possible implementation, the plug-in block is bonded to the first folded edge, the second folded edge, and the back plate respectively.

[0015] The double-folded edge and rounded corner composite plate provided by the utility model has the following beneficial effects: compared with the prior art, the front panel is bonded to the front end face of the interlayer, and the plurality of first folded edges of the front panel are arranged around the outer periphery of the interlayer. The back panel is bonded to the rear end face of the interlayer, and the circumferential edging structure of the back panel is arranged around the outer periphery of the plurality of first folded edges, and at the same time, the outer side of the corner of the edging structure has an arc surface. The double-folded edge and rounded corner composite plate provided by the utility model has better overall structural strength, and the corner of the edging has an arc surface, which can avoid the hidden danger of scratching people at right angles and improve the aesthetics. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A three-dimensional diagram of a double-folded edge and rounded corner composite panel provided by the utility model;

[0018] Figure 2 An exploded view of the double-folded edge and rounded corner composite plate provided by the utility model;

[0019] Figure 3 A top view of the double-folded edge and rounded corner composite plate provided by the utility model;

[0020] Figure 4 for Figure 3 Section view along AA;

[0021] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0022] Figure 6 A three-dimensional diagram of a panel provided by the utility model;

[0023] Figure 7 A three-dimensional diagram of the back plate provided by the utility model;

[0024] Figure 8 A three-dimensional diagram of the corner protector provided by the utility model.

[0025] Description of reference numerals:

[0026] 100, panel; 110, first folded edge; 200, back panel; 210, second folded edge; 211, first bending section; 212, second bending section; 300, interlayer; 400, corner guard; 410, arc surface; 420, plug-in block. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.

[0029] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", "high", "low", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the utility model.

[0030] See also Figures 1 to 8The double-folded edge and rounded corner composite plate provided by the utility model is now described. The double-folded edge and rounded corner composite plate comprises a panel 100, an interlayer 300 and a back panel 200 bonded in sequence from front to back, the panel 100 is provided with a plurality of first folded edges 110 bent backwards in the circumference, the plurality of first folded edges 110 are arranged around the circumference of the interlayer 300, the back panel 200 is provided with a rim structure extending forward in the circumference, the rim structure is arranged around the outer circumference of the plurality of first folded edges 110, and the outer side of the corner of the rim structure has an arc surface 410.

[0031] Compared with the prior art, the double-folded edge and rounded corner composite plate provided by the utility model has a panel 100 bonded to the front end face of the interlayer 300, and a plurality of first folded edges 110 of the panel 100 are arranged around the periphery of the interlayer 300. The back panel 200 is bonded to the rear end face of the interlayer 300, and the circumferential edge wrapping structure of the back panel 200 is arranged around the periphery of the plurality of first folded edges 110, and at the same time, the outer side of the corner of the edge wrapping structure has an arc surface 410. The double-folded edge and rounded corner composite plate provided by the utility model has better overall structural strength, and the corner of the edge wrapping has an arc surface 410, which can avoid the hidden danger of scratching people at right angles and improve the aesthetics.

[0032] Specifically, the panel 100, the interlayer 300 and the back panel 200 are sequentially bonded by polyurethane adhesive. Polyurethane adhesive refers to an adhesive used in bonding of load-bearing structural parts, which can withstand large dynamic loads and static loads and can be used for a long time. In layman's terms, polyurethane adhesive can replace bolts, rivets or welding to join structural parts of metal, plastic, glass, wood, etc. It is an adhesive that can withstand large loads for a long time and still have reliable performance.

[0033] See also Figure 6 A plurality of first folded edges 110 are integrally formed in the circumference of the panel 100 , and the first folded edges 110 are arranged perpendicular to the panel 100 . In addition, two adjacent first folded edges 110 are also perpendicular to each other, and the ends of two adjacent first folded edges 110 are split structures with gaps therebetween, so as to better wrap the interlayer 300 .

[0034] See also Figures 3 to 5 The edging structure includes a plurality of second folded edges 210 and a plurality of corner protectors 400. The plurality of second folded edges 210 are arranged in the circumferential direction of the back plate 200 and extend forward. The arc surface 410 is located on the outer side of the corner protector 400. There is an installation space between two adjacent second folded edges 210. The outer side of the back plate 200 corresponding to the installation space has an arc-shaped edge. When the corner protector 400 is installed in the installation space, the arc-shaped surface on the outer side of the corner protector 400 coincides with the arc-shaped edge on the outer side of the installation space corresponding to the back plate 200, thereby reducing the existence of seams and uneven structures of inside-out and outside-in.

[0035] See also Figure 3 and Figure 8The inner side of the corner protector 400 has a right-angle structure, which is compatible with the corner formed by two adjacent first folded edges 110. When the corner protector 400 is installed, the right-angle structure of the corner protector 400 is just surrounded by the ends of the two adjacent first folded edges 110, tightly fitting to improve the overall structural strength of the composite board.

[0036] Preferably, see Figure 4 and Figure 5 The lower end surface of the corner protector 400 and the lower end surface of the back plate 200 are located in the same plane to ensure that the back surface of the composite board is in a horizontal state as a whole, which facilitates the installation of the composite board.

[0037] See also Figure 7 The second folding edge 210 includes an integrally formed first bending section 211 and a second bending section 212, and the first bending section 211 is also integrally formed with the back panel 200. The first bending section 211 is vertically arranged in the circumference of the back panel 200 and extends forward, and the second bending section 212 is vertically arranged at the front end of the first bending section 211 and extends inward. The end of the second bending section 212 extends to the outer side surface of the first folding edge 110, thereby forming a close fitting relationship to ensure the overall structural stability of the composite board. The first bending section 211 and the second bending section 212 form an L-shaped bending structure. When the back panel 200 is installed, the above-mentioned L-shaped bending structure can also provide a self-locking function for the back panel 200, thereby improving the stability of the installation of the back panel 200.

[0038] Preferably, see Figure 4 The upper end surface of the second bending section 212 , the upper end surface of the corner protector 400 and the upper end surface of the panel 100 are located in the same plane to ensure that the front surface of the composite board is in a horizontal state as a whole, which is convenient for writing on the composite board on the panel 100 .

[0039] See also Figure 5 and Figure 8 , plug-in blocks 420 are respectively provided at both ends of the corner protector 400, and the plug-in blocks 420 are integrally formed with the corner protector 400. The plug-in blocks 420 have a hollow structure inside, which can reduce the weight of the composite board as a whole. The first folded edge 110 and the second folded edge 210 on the same side cooperate with the back plate 200 to form a plug-in channel. The internal shapes of the two ends of the plug-in channel are adapted to the outer contour of the plug-in blocks 420. The plug-in blocks 420 are plugged into the ends of the corresponding plug-in channels to keep the corner protector 400 stable.

[0040] Preferably, the plug-in block 420 is respectively bonded to the first folded edge 110 , the second folded edge 210 and the back plate 200 on the premise of being plugged in, which can further improve the bonding strength.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Double-folded edge and rounded corner composite panel, characterized in that: The invention comprises a panel (100), an interlayer (300) and a back panel (200) which are bonded in sequence from front to back, wherein the panel (100) is circumferentially provided with a plurality of first folded edges (110) bent backwards, the plurality of first folded edges (110) are arranged circumferentially around the interlayer (300), the back panel (200) is circumferentially provided with a edging structure extending forwards, the edging structure is arranged around the outer periphery of the plurality of first folded edges (110), and the outer side of the corner of the edging structure has an arc surface (410).

2. The double-folded edge and rounded corner composite plate according to claim 1, characterized in that: The panel (100), the interlayer (300) and the back panel (200) are bonded in sequence by polyurethane adhesive.

3. The double-folded edge and rounded corner composite plate according to claim 1, characterized in that: A plurality of the first folded edges (110) are integrally formed in the circumferential direction of the panel (100), and adjacent first folded edges (110) are perpendicular to each other.

4. The double-folded edge and rounded corner composite plate according to claim 1, characterized in that: The edging structure comprises a plurality of second folded edges (210) and a plurality of corner guards (400); the plurality of second folded edges (210) are arranged circumferentially of the back plate (200) and extend forward; the arc surface (410) is located on the outer side surface of the corner guard (400); and the corner guard (400) is arranged between two adjacent second folded edges (210).

5. The double-folded edge and rounded corner composite plate according to claim 4, characterized in that: The inner side of the corner protector (400) is provided with a right-angle structure, and the right-angle structure is arranged around the ends of two adjacent first folded edges (110).

6. The double-folded edge and rounded corner composite plate according to claim 4, characterized in that: The lower end surface of the corner protector (400) and the lower end surface of the back plate (200) are located on the same plane.

7. The double-folded edge and rounded corner composite plate according to claim 4, characterized in that: The second folded edge (210) comprises a first bending section (211) and a second bending section (212) which are integrally formed, wherein the first bending section (211) is arranged in the circumference of the back plate (200) and extends forward, and the second bending section (212) is arranged at the front end of the first bending section (211) and extends inwardly.

8. The double-folded edge and rounded corner composite plate according to claim 7, characterized in that: The upper end surface of the second bending section (212), the upper end surface of the corner protector (400), and the upper end surface of the panel (100) are located in the same plane.

9. The double-folded edge and rounded corner composite plate according to claim 4, characterized in that: Insertion blocks (420) are respectively provided at both ends of the corner guard (400); the first folded edge (110) and the second folded edge (210) on the same side cooperate with the back plate (200) to form an insertion channel; and the insertion block (420) is inserted into the end portion corresponding to the insertion channel.

10. The double-folded edge and rounded corner composite plate according to claim 9, characterized in that: The plug-in block (420) is respectively bonded to the first folded edge (110), the second folded edge (210) and the back plate (200).

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