Anti-bending composite board

Abstract

The utility model relates to the technical field of plates, in particular to an anti-bending composite plate which comprises a finger joint plate, anti-bending plates are arranged on the upper side and the lower side of the finger joint plate, panels are arranged on the outer sides of the anti-bending plates, the finger joint plate comprises a plurality of finger joint units, and anti-bending structures are arranged on the upper surfaces and the lower surfaces of the finger joint units. According to the utility model, the bending-resistant structures are arranged on the upper and lower surfaces of the finger joint units along the axes, so that the finger joint units can be prevented from being broken at finger joints, and the bending-resistant capability of the board in the short-axis direction is improved; the stiffeners on the upper and lower surfaces of the finger joint units are arranged in a staggered manner, so that the effective thickness of the board can be prevented from being reduced and cracking along finger joint grooves when being stressed; by arranging the anti-bending plate, the fiber direction of the vertical strip is perpendicular to the finger joint units, and meanwhile, the axis of the vertical strip is perpendicular to the finger joint units, so that the situation that every two adjacent left and right finger joint units crack along a side face gap can be avoided, and the anti-bending capacity of the plate in the long-axis direction is improved.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal technology, specifically to a bending-resistant composite sheet metal. Background Technology

[0002] Cabinets are essential furniture for home storage, and their storage capacity is a key consideration for small apartments. In recent years, to improve space utilization and increase storage space, cabinets, especially wardrobes, have gradually become taller.

[0003] In the current technology, MDF and plywood are the most commonly used boards in the furniture customization industry. MDF is used more in factories, while plywood is used more by carpenters. However, in daily use, cabinet door panels and load-bearing horizontal boards can bend due to moisture and their own weight, which greatly affects their use. Therefore, straighteners are often used to prevent cabinet door deformation. However, the adjustment effect of straighteners is limited, and straighteners cannot be used for large-span boards such as horizontal boards inside cabinets and desktops of desks.

[0004] Finger-jointed boards are also used as furniture panels. They improve the strength of the board by utilizing the interlocking of the wood. The joints of the boards are located at the ends, and the left and right sides are still glued together. This method is not suitable for large-span or extra-long structures. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a bending-resistant composite board.

[0006] The technical solution of this utility model is:

[0007] A bending-resistant composite board, comprising:

[0008] The finger joint plate has anti-bending plates on its upper and lower sides, and a panel is provided on the outer side of the anti-bending plates. The finger joint plate includes a plurality of finger joint units, and the upper and lower surfaces of the finger joint units are provided with anti-bending structures.

[0009] Preferably, the finger joint unit has finger joint grooves at both ends, the finger joint grooves are sawtooth-shaped, and the depth of the finger joint grooves is one to one and a half times the thickness of the finger joint unit. Two finger joint units are connected end to end through the finger joint grooves.

[0010] Preferably, the finger joints are interlocked to form a finger joint seam, and the misalignment distance between the two finger joint seams is two to three times the width of the finger joint unit, but not more than 1 / 2 of the length of the finger joint unit.

[0011] Preferably, the bending-resistant structure includes a back groove, which extends along the axis of the finger joint unit and is evenly distributed on the top surface and the ground of the finger joint unit. The depth of the back groove does not exceed 1 / 2 of the thickness of the finger joint unit, and the back grooves on the upper and lower sides are arranged alternately.

[0012] Preferably, the back groove is provided with a reinforcing strip, the width of which is less than its own thickness, and the top surface of the reinforcing strip is flush with the finger joint unit.

[0013] Preferably, the anti-bending plate includes a plurality of vertical strips, the vertical strips being tightly fitted together, the thickness of the vertical strips being no more than 1 / 2 of the thickness of the finger joint unit, and the width of the vertical strips being less than their own thickness.

[0014] Preferably, the fiber direction of the vertical strip is perpendicular to the outer side of the finger joint unit, and the axis of the vertical strip is perpendicular to the axis of the finger joint unit.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention, by setting anti-bending structures along the axis on the upper and lower surfaces of the finger joint unit, can prevent the finger joint unit from breaking at the finger joint seam and improve the bending resistance of the board in the short axis direction; by arranging the reinforcing strips on the upper and lower surfaces of the finger joint unit in an alternating manner, it can prevent the effective thickness of the board from decreasing and cracking along the finger joint groove under stress; by setting anti-bending plates, making the fiber direction of the vertical strips perpendicular to the finger joint unit, and at the same time making the axis of the vertical strips perpendicular to the finger joint unit, it can prevent two adjacent finger joint units from cracking along the side seam and improve the bending resistance of the board in the long axis direction. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is an exploded view of the overall structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the finger joint plate structure in this utility model;

[0020] Figure 4 This is a left view of the overall structure of this utility model;

[0021] Figure 5 This is a front view of the overall structure of this utility model.

[0022] The meanings of the labels in the diagram are as follows:

[0023] 1. Finger joint plate; 11. Finger joint unit; 12. Finger joint groove; 13. Finger joint seam; 14. Back groove; 15. Reinforcing strip;

[0024] 2. Bending plate; 21. Vertical strip;

[0025] 3. Panel. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1:

[0028] Please see Figure 1-5 The present invention will describe the above technical solution in detail through the following embodiments:

[0029] A bending-resistant composite board, comprising:

[0030] Finger joint plate 1, with anti-bending plates 2 bonded to the upper and lower sides of finger joint plate 1, and a panel 3 bonded to the outer side of anti-bending plate 2. Finger joint plate 1 includes several finger joint units 11, and anti-bending structures are provided on the upper and lower surfaces of finger joint units 11.

[0031] Finger-joint units 11 are preferably made of cedar or pine. The lower wood density reduces the overall weight. It is important to note that the axial direction of the finger-joint unit 11 is parallel to the minor axis of the composite board.

[0032] Finger joint unit 11 has finger joint grooves 12 at both ends. The finger joint grooves 12 are sawtooth-shaped. The depth of the finger joint grooves 12 is one to one and a half times the thickness of the finger joint unit 11. Two finger joint units 11 are connected end to end through the finger joint grooves 12.

[0033] After the finger joints 12 are inserted, they are bonded together with glue, preferably white glue. The thicker the wood, the deeper the finger joint 12 should be, which can improve the bonding strength between the two finger joint units 11.

[0034] After the finger joint grooves 12 are interlocked, they form a finger joint seam 13. The misalignment distance between the two finger joint seams 13 is two to three times the width of the finger joint unit 11, but not more than 1 / 2 of the length of the finger joint unit 11.

[0035] The left and right adjacent finger joint units 11 are bonded together with white glue, and the finger joint seams 13 are arranged in an alternating manner. The friction between the finger joint units 11 can be used to reduce the possibility of the finger joint plate 1 breaking off at the finger joint seam 13.

[0036] The bending-resistant structure includes a back groove 14, which extends along the axis of the finger joint unit 11 and is evenly distributed on the top surface and the ground of the finger joint unit 11. The depth of the back groove 14 does not exceed 1 / 2 of the thickness of the finger joint unit 11, and the back grooves 14 on the upper and lower sides are staggered.

[0037] The staggered arrangement of the back grooves 14 can prevent the finger joint unit 11 below the bottom surface of the back groove 14 from being too thin, which would cause the finger joint unit 11 to crack at the back groove 14.

[0038] The back groove 14 is provided with a reinforcing strip 15. The width of the reinforcing strip 15 is less than its own thickness, and the top surface of the reinforcing strip 15 is flush with the finger joint unit 11.

[0039] The reinforcing strip 15 is glued to the back groove 14. Bamboo is preferred for the reinforcing strip 15, and the fiber direction of the reinforcing strip 15 is parallel to the axial direction of the back groove 14.

[0040] It should be noted that the hardness of the bamboo strips gradually increases radially from the inside to the outside. When placing the reinforcing strip 15, the side with higher density should face the opening of the back groove 14.

[0041] The reinforcing strip 15 is used to increase the bending resistance of the finger joint unit 11 in the axial direction.

[0042] The bending plate 2 includes several vertical strips 21, which are closely fitted together. The thickness of the vertical strips 21 is no more than 1 / 2 of the thickness of the finger joint unit 11, and the width of the vertical strips 21 is less than its own thickness.

[0043] The vertical strips 21 are bonded together with adhesive. The thickness is greater than the width, which improves the compressive and bending resistance of the vertical strips 21 in the numerical direction.

[0044] The fiber direction of the vertical strip 21 is perpendicular to the outer side of the finger joint unit 11, and the axis of the vertical strip 21 is perpendicular to the axis of the finger joint unit 11.

[0045] The fiber direction of the vertical strip 21 is perpendicular to the finger joint unit 11, which improves compressive strength. The axis of the vertical strip 21 is perpendicular to the axis of the finger joint unit 11, which improves the bonding strength between the finger joint units 11 and prevents adjacent finger joint units 11 from cracking along the side seams. This allows for applications with large spans.

[0046] Working principle:

[0047] By using the reinforcing strip 15, the bending resistance in the axial direction of the finger-jointed plate 1 is improved, thereby improving the short-axis bending resistance of the composite plate.

[0048] Vertical bars 21 are used to improve the fixing strength between finger joint units 11, thereby improving the bending resistance of the long axis of the composite board.

[0049] The combination of these two elements can improve the overall bending resistance of the board material, meeting the requirements for use in large-span structures.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A bending-resistant composite board, characterized in that, include: Finger joint plate (1), the finger joint plate (1) is provided with anti-bending plates (2) on the upper and lower sides, the anti-bending plates (2) are provided with a panel (3) on the outer side, the finger joint plate (1) includes a plurality of finger joint units (11), the upper and lower surfaces of the finger joint units (11) are provided with anti-bending structures.

2. The bending-resistant composite board as described in claim 1, characterized in that: The finger joint unit (11) has finger joint grooves (12) at both ends. The finger joint grooves (12) are serrated. The depth of the finger joint grooves (12) is one to one and a half times the thickness of the finger joint unit (11). The two finger joint units (11) are connected end to end through the finger joint grooves (12).

3. The bending-resistant composite board as described in claim 2, characterized in that: The finger joints (12) are interlocked to form a finger joint (13). The misalignment distance between the two finger joints (13) is two to three times the width of the finger joint unit (11), but not more than 1 / 2 of the length of the finger joint unit (11).

4. The bending-resistant composite board as described in claim 1, characterized in that: The bending-resistant structure includes a back groove (14), which extends along the axis of the finger joint unit (11) and is evenly distributed on the top surface and ground of the finger joint unit (11). The depth of the back groove (14) does not exceed 1 / 2 of the thickness of the finger joint unit (11), and the back grooves (14) on the upper and lower sides are staggered.

5. The bending-resistant composite board as described in claim 4, characterized in that: The back groove (14) is provided with a reinforcing strip (15), the width of the reinforcing strip (15) is less than its own thickness, and the top surface of the reinforcing strip (15) is flush with the finger joint unit (11).

6. The bending-resistant composite board as described in claim 1, characterized in that: The bending plate (2) includes several vertical strips (21), which are closely fitted together. The thickness of each vertical strip (21) is not greater than 1 / 2 of the thickness of the finger joint unit (11), and the width of each vertical strip (21) is less than its own thickness.

7. The bending-resistant composite board as described in claim 6, characterized in that: The fiber direction of the vertical strip (21) is perpendicular to the outer side of the finger joint unit (11), and the axis of the vertical strip (21) is perpendicular to the axis of the finger joint unit (11).

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