General light-weight support structure with mortise and tenon cooperative shear resistance

Abstract

The utility model relates to a general light weight support structure of mortise and tenon cooperative shearing resistance, including upper panel, support board and base plate, be equipped with first clamping slot on the upper panel, the upper side of support board is equipped with the convex corresponding with the number of first clamping slot, the cooperation between the convex and first clamping slot is perpendicular to the upper panel with support board through, the base plate has multiple, the upper side of base is equipped with third clamping slot, the lower side of support board is equipped with the second clamping slot consistent with the number of base plate, each base plate is perpendicular to the arrangement of support board through the cooperation of its own third clamping slot and its corresponding second clamping slot, the base plate is perpendicular to the arrangement of upper panel, the upper surface of base plate is all with the lower surface of upper panel and is pasted. The utility model is connected with the whole structure through mortise and tenon, need not use nail, the structure after assembling is more firm. When needing transportation, just can be disassembled by pulling out the support board from the upper panel and base plate, significantly reduces the transportation space, reduces transportation cost.

Description

Technical Field

[0001] This utility model relates to the field of lightweight structural design and support technology, specifically to a general-purpose lightweight support structure with mortise and tenon joints for shear resistance. Background Technology

[0002] Currently, load-bearing frame structures are widely used in various fields such as residential, commercial, and outdoor applications. Traditional frames mostly rely on bolt connections, welding, or adhesive bonding to fix components and transmit forces. Among these, bolt or nail connections require additional accessories and are prone to loosening due to vibration; welding processes require high operational skills and are difficult to disassemble; and adhesive bonding suffers from strength reduction due to environmental aging. All of these have drawbacks, including inconvenient installation and maintenance, and insufficient long-term load-bearing reliability.

[0003] Lightweighting is one of the core design trends in current support structures, especially in areas such as portable equipment brackets, folding furniture, and small instrument supports. It is necessary to reduce the weight of the structure while ensuring sufficient strength. Among them, "shear resistance" is a key mechanical indicator for lightweight support structures. When the support structure is subjected to lateral loads (such as the lateral thrust of equipment or the lateral force during furniture use), it is prone to deformation or failure due to insufficient shear resistance at the nodes.

[0004] Existing lightweight support structures mostly employ thin-walled metal components and composite material parts connected by bolts or clips. While this achieves weight reduction, metal components are expensive, prone to corrosion, and cumbersome to assemble, often requiring specialized tools, resulting in wasted time and effort. The shear resistance of composite material connection nodes depends on the connectors themselves, posing a risk of single-point failure. Mortise and tenon structures, as a classic connection method in traditional timber construction, have the advantages of requiring no additional connectors and strong structural integrity. Although traditional mortise and tenon structures do not have additional connectors, their design does not focus on "cooperative shear resistance"—using only a single mortise and tenon form (such as straight tenon or dovetail tenon), while meeting basic connection requirements, fails to utilize the principle of "multi-node cooperative shear force dispersion" in mechanics to optimize the mortise and tenon combination form. This leads to insufficient shear resistance under lightweight design and is often designed for specific scenarios, such as antique buildings, making it difficult to universally adapt to different support needs and hindering its widespread application in the field of structural support. Utility Model Content

[0005] To address the aforementioned problems, this utility model proposes a universal lightweight support structure with mortise and tenon joints for shear resistance. The specific technical solution is as follows: A general-purpose lightweight support structure with mortise and tenon joint shear resistance includes a top panel, a support plate, and a base plate. The top panel has a first slot, and the upper side of the support plate has protrusions corresponding to the number and position of the first slot. The support plate is perpendicular to the top panel through the cooperation between the protrusions and the first slot. There are multiple base plates, and the upper side of the base plate has a third slot. The lower side of the support plate has a second slot with the same number as the base plates. Each base plate is perpendicular to the support plate through the cooperation between its own third slot and its corresponding second slot. All base plates are perpendicular to the top panel, and the upper surface of each base plate is in contact with the lower surface of the top panel.

[0006] Furthermore, there are two base plates, each with multiple notches.

[0007] Furthermore, there are two card slots, located on the left and right sides of the top panel respectively.

[0008] The beneficial effects of this utility model are as follows: This lightweight, universal support structure, constructed using mortise and tenon joints for shear resistance, eliminates the need for nails, simplifies assembly, and significantly saves time and costs. The assembled structure also better conforms to mechanical force transmission mechanisms, resulting in greater robustness. For transportation, the support plate can be easily removed from the top panel and base plate, disassembling the structure into the top panel, support plate, and base plate, significantly reducing transportation space and costs. Furthermore, the assembly process is simple, requiring no specialized tools, making it convenient and practical. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a perspective view of the general-purpose lightweight support structure with mortise and tenon joint shear resistance described in this utility model; Figure 2 This is an exploded view of the general-purpose lightweight support structure with mortise and tenon joint shear resistance described in this utility model.

[0011] In the diagram: 1. Top panel; 1.1. First slot; 2. Support plate; 2.1. Protrusion; 2.2. Second slot; 3. Base plate; 3.1. Third slot; 3.2. Notch. Detailed Implementation

[0012] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0013] The present invention provides the following specific implementation scheme: like Figure 1-2 As shown, this utility model provides a general-purpose lightweight support structure with mortise and tenon joint shear resistance, including an upper panel 1, a support plate 2, and a base plate 3. The upper panel 1 has first slots 1.1 on both the left and right sides. The support plate 2 has protrusions 2.1 on its upper side that correspond to the number and position of the first slots 1.1. The support plate 2 is perpendicular to the upper panel 1 through the cooperation between the protrusions 2.1 and the first slots 1.1. After the upper panel 1 and the support plate 2 are connected, the lower plane of the upper panel 1 and the upper edge of the support plate 2 are attached. There are multiple base plates 3. The upper side of the base plate has a third slot 3.1. The lower side of the support plate 2 has a second slot 2.2 that is the same number as the base plates 3. Each base plate 3 is arranged perpendicularly to the support plate 2 through the cooperation of its own third slot 3.1 and its corresponding second slot 2.2. All base plates 3 are arranged perpendicularly to the upper panel 1. After assembly, the upper surface of the base plate 3 is attached to the lower surface of the upper panel 1.

[0014] Furthermore, there are two base plates 3, which are symmetrically distributed on the left and right sides of the support plate 2. The base plates 3 are provided with multiple notches 3.2, which are columnar with triangular cross-sections and are isosceles triangles. The notches 3.2 can reduce raw material costs.

[0015] Furthermore, there are two first card slots 1.1, located on the left and right sides of the upper panel 1, respectively.

[0016] Of course, the cross-sectional shape of the slot, protrusion, and notch is not limited to rectangle or triangle, but can also be trapezoid, arc, polygon, or other irregular shape, as long as it can achieve the purpose of reducing weight, saving materials, and reducing costs without significantly affecting the structural strength and functional realization.

[0017] From a mechanical perspective, the support plate 2 forms a three-dimensional tenon-and-mortise connection with the upper panel 1 (vertical constraint) and the two base plates 3 (lateral constraint). When shear force is applied, the upper panel 1 restricts the vertical displacement of the support plate 2, and the base plates 3 restrict the lateral displacement of the support plate 2. The multi-directional constraints work together to transform the shear force into dispersed compressive stress, avoiding tenon-and-mortise failure caused by force in one direction. The two base plates 3 are symmetrically distributed on both sides of the support plate 2. When shear force is applied, the two base plates 3 on both sides simultaneously bear the opposite shear force, forming a force balance. This symmetrical design avoids excessive force on one side, so that the shear force is evenly distributed to the two tenon-and-mortise connection points, improving the overall shear redundancy. The interference fit of the tenon and mortise generates positive pressure, which, combined with the multi-directional support of the structure and the shear strength of the material, forms a triple synergistic effect of "contact friction shear resistance + structural constraint shear resistance + material self-shear resistance", forming a multi-directional constraint shear-resistant structural system.

[0018] The mortise and tenon joints create a universal lightweight support structure that provides shear resistance. This eliminates the need for nails, facilitating easy assembly and significantly saving time and costs. Furthermore, the assembled structure better conforms to mechanical force transmission mechanisms, resulting in greater robustness. For transportation, simply remove the support plate 2 from the top panel 1 and base plate 3 to disassemble the mortise and tenon shear-resistant universal lightweight support structure into the top panel 1, support plate 2, and base plate 3, significantly reducing transportation space and costs. In addition, the assembly process is simple, requiring no specialized tools, making it convenient and practical.

[0019] 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 illustrative of the principles of this 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.

Claims

1. A general-purpose lightweight support structure with mortise and tenon joints for shear resistance, characterized in that: The system includes an upper panel (1), a support plate (2), and a base plate (3). The upper panel (1) is provided with a first slot (1.1). The upper side of the support plate (2) is provided with protrusions (2.1) corresponding to the number and position of the first slot (1.1). The support plate (2) is perpendicular to the upper panel (1) through the cooperation between the protrusions (2.1) and the first slot (1.1). There are multiple base plates (3). The upper side of the base is provided with a third slot (3.1). The lower side of the support plate (2) is provided with a second slot (2.2) with the same number as the base plates (3). Each base plate (3) is arranged perpendicular to the support plate (2) through the cooperation of its own third slot (3.1) and its corresponding second slot (2.2). All base plates (3) are arranged perpendicular to the upper panel (1). The upper surface of the base plate (3) is attached to the lower surface of the upper panel (1).

2. The general-purpose lightweight support structure with mortise and tenon joint shear resistance according to claim 1, characterized in that: There are two base plates (3), and multiple notches (3.2) are provided on the base plates (3).

3. The general-purpose lightweight support structure with mortise and tenon joint shear resistance according to claim 1, characterized in that: There are two first card slots (1.1), located on the left and right sides of the upper panel (1).

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