A spiral curved surface structure and bumper

Abstract

The present invention relates to a spiral curved surface structure, comprising at least two curved surface monomers, wherein two adjacent curved surface monomers are symmetrically arranged, and the curved surface monomers comprise a first curved surface, a second curved surface and a cylindrical curved surface, wherein the cylindrical curved surface rises or descends in a spiral, wherein the first curved surface is connected to a lower section of the cylindrical curved surface, and an upper section of the cylindrical curved surface is connected to the second curved surface; the manufacturing cost is low and the energy absorption rate is high; the present invention also relates to a manufacturing method of the above-mentioned spiral curved surface structure, comprising: step 1, placing a cylinder at one end of a flat plate, wherein the angle between the axis of the cylinder and the length direction of the flat plate is θ, and the vertical center plane of the cylinder passes through the lower vertex angle of the head end of the flat plate; bending the plate upward by 360° along the cylindrical spiral to obtain a curved surface monomer; step 2, pulling out the cylinder and rotating it counterclockwise by 180°-2θ, and then bending the plate upward by 360° along the cylindrical spiral; step 3, repeating steps 1 and 2; the manufacturing cost is low.

Description

Technical Field

[0001] The invention relates to a curved surface structure, in particular to a spiral curved surface structure and a bumper. Background Art

[0002] Energy-absorbing filling materials are mainly divided into metal foam structure, lattice sandwich structure and prismatic sandwich structure according to the shape of the lightweight structure. Metal foam is divided into open-cell type and closed-cell type according to the closure of the pores, but due to the low mechanical strength of the metal foam structure, its use is limited to the aviation industry and sound insulation materials. The lattice sandwich structure has high mechanical strength, and mainly includes pyramid, Octet and Kagome structures. The lattice sandwich structure consists of rods connecting nodes and nodes to form a unit cell structure, and then the unit cell structure is arranged according to a certain rule to form a spatial lattice structure. Although the lattice sandwich structure has high mechanical strength, its manufacturing method is complex and the production cost is high. As a typical prismatic sandwich structure, the honeycomb structure has high specific strength and has been widely used in the aerospace field. However, the closed internal structure of the prismatic structure limits the utilization of the internal space and has the disadvantages of low thermal efficiency. As a filler of the structure, the lightweight structure not only requires a certain mechanical strength, but also the energy absorption characteristics of the structure are equally important. As a new type of bionic lightweight structure, the double sine surface structure is based on the front claws of the mantis shrimp. Although the mechanical strength of this structure is not as good as that of the triangular prism sandwich structure and the single sine structure, its energy absorption rate is much higher than the other two structures. However, this structure has a complex shape and is difficult to manufacture in practice. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a spiral curved surface structure with certain mechanical strength and guaranteed energy absorption rate.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: a spiral curved surface structure, including at least two curved surface monomers, two adjacent curved surface monomers are symmetrically arranged, the curved surface monomers include a first curved surface, a second curved surface and a cylindrical curved surface connected to the first curved surface and the second curved surface, the cylindrical curved surface spirally rises or spirally descends, the first curved surface is connected to the lower section of the cylindrical curved surface, and the upper section of the cylindrical curved surface is connected to the second curved surface; two adjacent curved surface monomers are connected through their respective second curved surfaces. Two adjacent curved surface monomers are symmetrically arranged about their connecting surface, and the connecting surface is the connecting surface of the two second curved surfaces.

[0005] Furthermore, the spiral curved surface structure is integrally formed.

[0006] Furthermore, the cylindrical curved surface is formed by a plane plate that rises or descends in a spiral.

[0007] Furthermore, the slope of the cylindrical curved surface when spirally ascending is between 0.5 and 2.

[0008] Furthermore, the first curved surface is a triangular structure.

[0009] Furthermore, the second curved surface is a triangular structure.

[0010] Furthermore, the angle between the axes of the cylindrical curved surfaces of the two curved surface monomers is between 60° and 150°.

[0011] Furthermore, the axes of the cylindrical curved surfaces of the two curved surface monomers form an angle of 90°.

[0012] The beneficial effects of the spiral surface structure are: the three-dimensional spiral surface structure can be manufactured at low cost and the purpose of lightweight structure can be achieved. The three-dimensional spiral surface structure of the present invention as an energy absorbing material not only has a high energy absorption rate but also has high mechanical strength.

[0013] The present invention also relates to a method for manufacturing a spiral curved surface structure, comprising the following steps:

[0014] Step 1, place a cylinder at one end of a planar plate, the planar plate is a rectangular structure, the angle between the axis of the cylinder and the length direction of the planar plate is θ, θ is an acute angle, and the vertical center plane of the cylinder passes through the lower vertex of the head end of the planar plate; bend the plate upward along the cylinder spirally 360° to obtain a curved surface monomer;

[0015] Step 2: After the cylinder is pulled out, the vertical center plane of the cylinder and the upper edge of the flat plate are rotated counterclockwise by 180°-2θ with the intersection of the vertical center plane of the cylinder and the upper edge of the flat plate as the center of the circle; the plate is bent upward 360° along the cylindrical spiral to obtain another curved surface monomer; and two symmetrically arranged curved surface monomers are formed;

[0016] Step 3: If a longer spiral curved surface structure is required, repeat steps 1 and 2 until the flat sheet is completely curled into a spiral curved surface structure comprising a plurality of curved surface monomers.

[0017] Furthermore, θ is between 15° and 60°.

[0018] Furthermore, θ is 45°.

[0019] The manufacturing method has the advantages of simple manufacturing and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the state when the first curved surface monomer is processed in the present invention;

[0022] Figure 3 This is a schematic diagram of the state when processing the second curved surface monomer of the present invention;

[0023] Figure 4 It is a schematic diagram of the state of the multi-layer arrangement of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the bumper in the present invention;

[0025] In the accompanying drawings, the component names represented by each reference numeral are listed as follows: 1. first curved surface, 2. cylindrical curved surface, 3. second curved surface, 4. connecting surface, 5. cylinder, 6. bumper, 6-1. energy absorption box. DETAILED DESCRIPTION

[0026] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0027] like Figure 1-3 As shown, a spiral curved surface structure includes at least two curved surface monomers, two adjacent curved surface monomers are symmetrically arranged, the curved surface monomer includes a first curved surface 1, a second curved surface 3 and a cylindrical curved surface 2 connected to the first curved surface 1 and the second curved surface, the cylindrical curved surface 2 spirally rises or spirally descends, the first curved surface 1 is connected to the lower section of the cylindrical curved surface 2, and the upper section of the cylindrical curved surface 2 is connected to the second curved surface; the two curved surface monomers are connected through their respective second curved surfaces 3. Two adjacent curved surface monomers are symmetrically arranged about their connecting surface 4.

[0028] The spiral curved surface structure is integrally formed.

[0029] The cylindrical curved surface 2 is formed by a plane plate that rises or descends in a spiral.

[0030] The slope of the cylindrical curved surface 2 when it spirals upward is 1, and the slope of the cylindrical curved surface 2 when it spirals downward is -1. Both the first curved surface 1 and the second curved surface 3 are triangular structures.

[0031] The axes of the cylindrical curved surfaces 2 of the two curved surface monomers form an angle of 90°.

[0032] When the present invention is used for a car bumper, Figure 4-5 As shown, the present invention also relates to a bumper 6, comprising a crossbeam and energy absorption boxes 6-1 arranged on both sides of the crossbeam, wherein the energy absorption box 6-1 is provided with multiple layers of the above-mentioned spiral curved surface structure.

[0033] The present invention also relates to a method for manufacturing the above-mentioned spiral curved surface structure, comprising the following steps:

[0034] Step 1, place a cylinder at one end of a planar plate, the planar plate is a rectangular structure, the axis of the cylinder forms an angle of 45° with the length direction of the planar plate, and the vertical center plane of the cylinder passes through the lower vertex of the head end of the planar plate; bend the plate upward 360° along the cylinder spiral to obtain a curved surface monomer;

[0035] Step 2: After the cylinder is pulled out, the vertical center plane of the cylinder and the upper edge of the flat plate are rotated 90 degrees counterclockwise with the intersection of the vertical center plane of the cylinder and the upper edge of the flat plate as the center of the circle; the plate is bent upward 360 degrees along the cylindrical spiral to obtain another curved surface monomer; and two symmetrically arranged curved surface monomers are formed;

[0036] Step 3: If a longer spiral curved surface structure is required, repeat steps 1 and 2 until the flat sheet is completely curled into a spiral curved surface structure comprising a plurality of curved surface monomers.

[0037] 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, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A spiral surface structure, characterized in that: It comprises at least two curved surface monomers, wherein two adjacent curved surface monomers are symmetrically arranged, and the curved surface monomers comprise a first curved surface, a second curved surface, and a cylindrical curved surface connected to the first curved surface and the second curved surface, wherein the cylindrical curved surface rises or descends in a spiral, wherein the first curved surface is connected to the lower section of the cylindrical curved surface, and the upper section of the cylindrical curved surface is connected to the second curved surface; and two adjacent curved surface monomers are connected via their respective second curved surfaces.

2. The spiral curved surface structure according to claim 1, characterized in that: The cylindrical curved surface is formed by a plane plate that rises or descends in a spiral.

3. The spiral curved surface structure according to claim 2, characterized in that: The slope of the cylindrical curved surface when it spirals upward is between 0.5 and 2.

4. The spiral curved surface structure according to claim 2, characterized in that: The first curved surface and the second curved surface are both triangular structures.

5. The spiral curved surface structure according to claim 2, characterized in that: The angle between the axes of the cylindrical curved surfaces of the two curved surface monomers is between 60° and 150°.

6. The spiral curved surface structure according to claim 5, characterized in that: The axes of the cylindrical curved surfaces of the two curved surface monomers form an angle of 90°.

7. A method for manufacturing a spiral curved surface structure, characterized in that: The steps include: Step 1, place a cylinder at one end of a planar plate, the planar plate is a rectangular structure, the angle between the axis of the cylinder and the length direction of the planar plate is θ, θ is an acute angle, and the vertical center plane of the cylinder passes through the lower vertex of the head end of the planar plate; bend the plate upward along the cylinder spirally 360° to obtain a curved surface monomer; Step 2: After the cylinder is pulled out, the vertical center plane of the cylinder and the upper edge of the flat plate are rotated counterclockwise by 180°-2θ with the intersection of the vertical center plane of the cylinder and the upper edge of the flat plate as the center of the circle; the plate is bent upward 360° along the cylindrical spiral to obtain another curved surface monomer; and two symmetrically arranged curved surface monomers are formed; Step 3: If a longer spiral curved surface structure is required, repeat steps 1 and 2 until the flat sheet is completely curled into a spiral curved surface structure comprising a plurality of curved surface monomers.

8. The method for manufacturing a spiral curved surface structure according to claim 7, characterized in that: θ is between 15°-60°.

9. The method for manufacturing a spiral curved surface structure according to claim 7, characterized in that: θ is 45°.

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