Splicing structure and elastic cushion

Abstract

The invention discloses a splicing structure and an elastic cushion, the splicing structure comprises a first splicing unit, a second splicing unit, a third splicing unit, a first connecting piece and a second connecting piece, the first connecting piece comprises a first stress part, and the first stress part extends into a first concave part of the first splicing unit and a first concave part of the second splicing unit along a first direction; the two ends, in the second direction, of the first stress part abut against the first splicing unit and the second splicing unit. The second connecting piece comprises a second stress part, the second stress part extends into the second concave part of the first splicing unit and the second concave part of the third splicing unit in the second direction, and the two ends, in the first direction, of the second stress part abut against the first splicing unit and the third splicing unit. According to the 3D printing mattress, geometric interlocking of the first splicing units is achieved through the first connecting pieces and the second connecting pieces, so that a brand new splicing structure is provided, and the problem that the 3D printing mattress cannot be spliced in a conventional connecting mode is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household products, and in particular to a splicing structure and an elastic pad. BACKGROUND

[0002] The 3D printing mattress is a new type of mattress manufactured by using 3D printing technology. It combines advanced manufacturing process and ergonomic design concept, and has good support and resilience. The 3D printing mattress cannot be directly printed, and usually needs to be divided into multiple parts for printing, and then spliced together.

[0003] However, part of the 3D printed mattress is connected by a polyhedral cell structure, the cell structure itself is composed of multiple ribs, there are holes between the ribs, and there are recesses between the cells. It cannot fix the conventional connecting structure, which leads to the fact that multiple mattresses cannot be connected by conventional connecting methods such as bolts or hinges. SUMMARY

[0004] In view of the above shortcomings of the prior art, the technical problem to be solved by the present application is to provide a splicing structure and a mattress to solve the problem that the 3D printed mattress cannot be spliced by the conventional connecting structure.

[0005] The technical solution adopted by the present application to solve the technical problem is a splicing structure, comprising a first splicing unit, a second splicing unit, a third splicing unit, a first connecting piece and a second connecting piece. The first splicing unit and the second splicing unit are arranged along a first direction, and the first splicing unit and the second splicing unit are provided with a first recess; the first connecting piece comprises a first stress portion extending along a second direction, the first stress portion extends into the first recess of the first splicing unit and the first recess of the second splicing unit along the first direction, and the both ends of the first stress portion along the second direction abut against the first splicing unit and the second splicing unit, so as to lock the position of the first splicing unit relative to the second splicing unit in the second direction; the first direction intersects with the second direction; The first splicing unit and the third splicing unit are arranged along a second direction, and the first splicing unit and the third splicing unit are provided with a second recess; the second connecting piece comprises a second stress portion extending along a first direction, the second stress portion extends into the second recess of the first splicing unit and the second recess of the third splicing unit along the second direction, and the both ends of the second stress portion along the first direction abut against the first splicing unit and the third splicing unit, so as to lock the position of the first splicing unit relative to the third splicing unit in the first direction.

[0006] The present application has at least the following beneficial effects: The first connecting member and the second connecting member are used to achieve geometric interlocking of the first splicing unit, the position of the first splicing unit in the first direction and the second direction is locked, and splicing and fixing of the first splicing unit is achieved. The second splicing unit and the third splicing unit can also be locked in the first direction and the second direction by respectively arranging connecting members on different sides of the second splicing unit and the third splicing unit, so as to achieve position fixing after splicing, thereby achieving splicing and fixing of multiple splicing units, replacing the conventional connecting structure (such as a hinge or a bolt), and solving the problem that the conventional connecting method cannot splice a 3D printing mattress.

[0007] Further, the size of the first stress part in the second direction is greater than the size of the first stress part in the first direction, and the size of the second stress part in the first direction is greater than the size of the second stress part in the second direction.

[0008] Further, the first connecting member further comprises at least two first connecting parts respectively connected to both sides of the first stress part and extending in the first direction, the first connecting part extends into the first recess in the first direction, and both ends of the first connecting part in the second direction abut against the first splicing unit and the second splicing unit. The second connecting member further comprises at least two second connecting parts respectively connected to both sides of the second stress part and extending in the second direction, the second connecting part extends into the second recess in the second direction, and both ends of the second connecting part in the first direction abut against the first splicing unit and the third splicing unit.

[0009] Further, at least two first connecting parts are arranged on the same side of the first stress part, a first recess is formed between the two first connecting parts, a first protrusion is arranged on the bottom surface of the first recess, the first protrusion extends into the first recess and abuts against the first connecting part in the second direction; At least two second connecting parts are arranged on the same side of the second stress part, a second recess is formed between the two second connecting parts, a second protrusion is arranged on the bottom surface of the second recess, the second protrusion extends into the second recess and abuts against the second connecting part in the first direction.

[0010] Further, the first splicing unit has a first surface, the first surface is recessed inward to form the first recess; the second splicing unit has a second surface, the second surface is recessed inward to form the first recess; The first splicing unit has a third surface, the third surface is recessed inward to form the second recess; the third splicing unit has a fourth surface, the fourth surface is recessed inward to form the second recess.

[0011] Further, the first connecting member has a first component located in the first recess of the first assembling unit, and a second component located in the first recess of the second assembling unit, the first component and the second component are symmetrical about a first symmetry axis parallel to the second direction; The second connecting member has a third component located in the second recess of the first assembling unit, and a fourth component located in the second recess of the third assembling unit, the third component and the fourth component are symmetrical about a second symmetry axis parallel to the first direction.

[0012] Further, the first assembling unit, the second assembling unit, the third assembling unit, the first connecting member and the second connecting member all comprise a plurality of unit cells connected with each other; Part of the unit cells of the first connecting member are aligned or misaligned with part of the unit cells of the first assembling unit in the second direction, and another part of the unit cells of the first connecting member are aligned or misaligned with part of the unit cells of the second assembling unit in the second direction; Part of the unit cells of the second connecting member are aligned or misaligned with part of the unit cells of the first assembling unit in the first direction, and another part of the unit cells of the second connecting member are aligned or misaligned with part of the unit cells of the third assembling unit in the first direction.

[0013] Further, the first force receiving part has a first component located in the first recess of the first assembling unit, and a second component located in the first recess of the second assembling unit; part of the unit cells of the first component are aligned with part of the unit cells of the first assembling unit in the second direction; part of the unit cells of the second component are aligned with part of the unit cells of the second assembling unit in the second direction; The second force receiving part has a third component located in the second recess of the first assembling unit, and a fourth component located in the second recess of the third assembling unit; part of the unit cells of the third component are aligned with part of the unit cells of the first assembling unit in the first direction; part of the unit cells of the fourth component are aligned with part of the unit cells of the third assembling unit in the first direction.

[0014] Further, the unit cell has a connecting part and an abutting part, the connecting parts of adjacent unit cells are connected with each other, so that a third recess is formed between a plurality of abutting parts; Part of the unit cells of the first connecting piece and part of the unit cells of the first or second splicing unit are distributed in a second direction in a staggered manner, so that the abutting part located in the first connecting piece at least partially extends into the third recess of the first or second splicing unit; and / or the abutting part located in the first or second splicing unit at least partially extends into the third recess located in the first connecting piece. Part of the unit cells of the second connecting piece and part of the unit cells of the first or third splicing unit are distributed in a first direction in a staggered manner, so that the abutting part located in the second connecting piece at least partially extends into the third recess of the first or third splicing unit; and / or the abutting part located in the first or third splicing unit at least partially extends into the third recess located in the second connecting piece.

[0015] Further, an elastic pad is also disclosed, comprising: a splicing structure; a fourth splicing unit, the fourth splicing unit and the third splicing unit are arranged in a first direction, the fourth splicing unit and the third splicing unit are both provided with a third recess; a third connecting piece is further arranged between the fourth splicing unit and the third splicing unit, the third connecting piece comprises a third stress part extending in a second direction; the third stress part extends into the third recess of the third splicing unit and the third recess of the fourth splicing unit in the first direction, and both ends of the third stress part in the second direction abut on the third splicing unit and the fourth splicing unit; the fourth splicing unit and the second splicing unit are arranged in a second direction, the fourth splicing unit and the second splicing unit are both provided with a fourth recess; a fourth connecting piece is further arranged between the fourth splicing unit and the second splicing unit, the fourth connecting piece comprises a fourth stress part extending in a first direction; the fourth stress part extends into the fourth recess of the second splicing unit and the fourth recess of the fourth splicing unit in the second direction, and both ends of the fourth stress part in the first direction abut on the second splicing unit and the fourth splicing unit.

[0016] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The application will be further described with reference to the drawings and examples, wherein: Figure 1 It is a structural schematic diagram of the elastic pad in the embodiment of the application; Figure 2This is an exploded view of the elastic pad in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the first splicing unit, the second splicing unit, the third splicing unit, and the fourth splicing unit in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the first splicing unit in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the first connector in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the second connector in an embodiment of the present invention; Figure 7 This is a top view of multiple unit cells in an embodiment of the present invention; Figure 8 This is a cross-sectional view of a portion of the unit cell of the first connector and a portion of the unit cell of the first splicing unit in an embodiment of the present invention when separated; Reference numerals: 100, first splicing unit; 101, unit cell; 102, third recess; 110, first concave portion; 111, first protrusion; 120, second concave portion; 121, second protrusion; 130, third concave portion; 140, fourth concave portion; 200, second splicing unit; 300, third splicing unit; 400, fourth splicing unit; 500, first connector; 510, first force-bearing portion; 520, first connecting portion; 530, first recess; 600, second connector; 610, second force-bearing portion; 620, second connecting portion; 630, second recess; 700, third connector; 800, fourth connector. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limiting this invention.

[0020] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0022] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] Please refer to Figures 1-3 This embodiment discloses a splicing structure, including a first splicing unit 100, a second splicing unit 200, a third splicing unit 300, a first connector 500, and a second connector 600. Each of the first splicing unit 100, the second splicing unit 200, the third splicing unit 300, the first connector 500, and the second connector 600 is composed of multiple unit cells 101. The material at the splicing points of the multiple splicing units is the same as the material of the splicing units themselves, thereby making the elasticity and support properties of the splicing units and the splicing points more similar, enhancing the consistency of the splicing structure.

[0024] The first splicing unit 100 and the second splicing unit 200 are arranged along a first direction. Both the first splicing unit 100 and the second splicing unit 200 are provided with a first recess 110. The first connector 500 includes a first force-receiving part 510 extending along a second direction. The first force-receiving part 510 extends into the first recess 110 of the first splicing unit 100 and the first recess 110 of the second splicing unit 200 along the first direction. Both ends of the first force-receiving part 510 abut against the first splicing unit 100 and the second splicing unit 200 along the second direction to lock the position of the first splicing unit 100 relative to the second splicing unit 200 in the second direction. The first direction and the second direction intersect. For example, the first direction and the second direction are perpendicular.

[0025] The first splicing unit 100 and the third splicing unit 300 are arranged along the second direction, and the first splicing unit 100 and the third splicing unit 300 are each provided with a second recess 120; the second connecting piece 600 comprises a second stress part 610 extending along the first direction, the second stress part 610 extends into the second recess 120 of the first splicing unit 100 and the second recess 120 of the third splicing unit 300 along the second direction, and the two ends of the second stress part 610 along the first direction abut against the first splicing unit 100 and the third splicing unit 300, so as to lock the position of the first splicing unit 100 relative to the third splicing unit 300 in the first direction.

[0026] Specifically, the first splicing unit 100 and the second splicing unit 200 are arranged along the first direction, and a first connecting piece 500 is arranged therebetween, and the first connecting piece 500 has a first stress part 510 extending along the second direction, and the first stress part 510 can extend into or exit the first recess 110 of the first splicing unit 100 and the second splicing unit 200 along the first direction. When part of the first stress part 510 is located in the first recess 110 of the first splicing unit 100, and the other part is located in the first recess 110 of the second splicing unit 200, the first stress part 510 can abut against the first splicing unit 100 and the second splicing unit 200 along the second direction, so as to lock the movement of the first splicing unit 100 relative to the second splicing unit 200 along the second direction.

[0027] Meanwhile, the first splicing unit 100 and the third splicing unit 300 are arranged along the second direction, and a second connecting piece 600 is arranged therebetween, and the second connecting piece 600 has a second stress part 610 extending along the first direction, and the second stress part 610 can extend into or exit the second recess 120 of the first splicing unit 100 and the third splicing unit 300 along the second direction. When part of the second stress part 610 is located in the second recess 120 of the first splicing unit 100, and the other part is located in the second recess 120 of the third splicing unit 300, the second stress part 610 can abut against the first splicing unit 100 and the third splicing unit 300 along the first direction, so as to lock the movement of the first splicing unit 100 relative to the third splicing unit 300 along the first direction.

[0028] In summary, by arranging the first connecting piece 500 between the first splicing unit 100 and the second splicing unit 200, the relative movement of the first splicing unit 100 along the second direction is locked; by arranging the second connecting piece 600 between the first splicing unit 100 and the third splicing unit 300, the relative movement of the first splicing unit 100 along the first direction is locked. In this way, the first splicing unit 100 is geometrically interlocked by the first connecting piece 500 and the second connecting piece 600, and the position of the first splicing unit 100 along the first direction and the second direction is locked, so as to realize the fixation of the first splicing unit 100. It should be noted that the splicing structure in the embodiment is not only used for fixing the first splicing unit 100, but also can be used for fixing the second splicing unit 200 and the third splicing unit 300 by arranging the connecting pieces on different sides of the second splicing unit 200 and the third splicing unit 300 respectively, thereby locking the positions of the second splicing unit 200 and the third splicing unit 300 along the first direction and the second direction, achieving the position fixing after splicing, and achieving the splicing and fixing of multiple splicing units. In this way, a brand-new splicing structure is provided to replace the conventional connecting structure (such as a hinge or a bolt), and the problem that the conventional connecting mode cannot splice the 3D printing mattress is solved.

[0029] The shapes of the multiple splicing units (including the first splicing unit 100, the second splicing unit 200, and the third splicing unit 300) are set. For example, referring to Figure 1 When the cross section of the splicing unit is rectangular, the first connecting piece 500 and the second connecting piece 600 are located on the adjacent sides of the same splicing unit, and the first direction is perpendicular to the second direction. For example, when the cross section of the splicing unit is triangular, the first connecting piece 500 and the second connecting piece 600 are located on the adjacent sides of the same splicing unit, the first direction intersects the second direction, and the included angle between the first direction and the second direction is the included angle of the sides on which the two connecting pieces are located.

[0030] For example, referring to Figures 5-6 The dimension of the first stress part 510 along the second direction is greater than the dimension of the first stress part 510 along the first direction, and the dimension of the second stress part 610 along the first direction is greater than the dimension of the second stress part 610 along the second direction.

[0031] Specifically, the first stress part 510 extends along the second direction, and the dimension of the first stress part 510 along the second direction is greater than the dimension of the first stress part 510 along the first direction. That is, the length of the first stress part 510 is the second direction, and the width of the first stress part 510 is the first direction. When the first splicing unit 100 and the second splicing unit 200 have a tendency of relative movement along the second direction, the first stress part 510 can abut against the first splicing unit 100 and the second splicing unit 200 along the length direction of the first stress part 510, thereby canceling the tendency of relative movement. Importantly, the first stress part 510 can abut against the first splicing unit 100 and the second splicing unit 200 along the length direction, and the first stress part 510 can enter or retreat into the first recess 110 along the width direction, so that the first stress part 510 is stressed along the length direction and is not stressed or is very small in stress along the width direction. In this way, the upper limit of the stress of the first connecting piece 500 is improved, the damage caused by excessive stress along the width direction is avoided, and the splicing strength of the first splicing unit 100 and the second splicing unit 200 is enhanced.

[0032] Similarly, the second force receiving portion 610 extends along the first direction, and the size of the second force receiving portion 610 along the first direction is greater than the size of the second force receiving portion 610 along the second direction. That is, the length of the second force receiving portion 610 is along the first direction, and the width of the second force receiving portion 610 is along the second direction. When the first splicing unit 100 and the third splicing unit 300 have a tendency of relative movement along the first direction, the second force receiving portion 610 can abut against the first splicing unit 100 and the third splicing unit 300 along the length direction of the second force receiving portion 610, so as to offset the tendency of relative movement. Importantly, the second force receiving portion 610 can abut against the first splicing unit 100 and the third splicing unit 300 along the length direction, and the second force receiving portion 610 can enter or retreat from the second recess 120 along the width direction, so that the second force receiving portion 610 is stressed along the length direction and is not stressed or is very small in stress along the width direction. In this way, the upper limit of stress of the second connecting piece 600 is improved, the damage of the second connecting piece 600 caused by excessive stress along the width direction is avoided, and the splicing strength of the first splicing unit 100 and the third splicing unit 300 is enhanced.

[0033] Please refer to Figures 5-6 The first connecting piece 500 further comprises at least two first connecting portions 520 respectively connected to two sides of the first force receiving portion 510 and extending along the first direction. The first connecting portion 520 extends into the first recess 110 along the first direction, and the two ends of the first connecting portion 520 abut against the first splicing unit 100 and the second splicing unit 200 along the second direction. The second connecting piece 600 further comprises at least two second connecting portions 620 respectively connected to two sides of the second force receiving portion 610 and extending along the second direction. The second connecting portion 620 extends into the second recess 120 along the second direction, and the two ends of the second connecting portion 620 abut against the first splicing unit 100 and the third splicing unit 300 along the first direction.

[0034] Specifically, the first connecting portion 520 is arranged at two sides of the first force receiving portion 510. The first connecting portion 520 can extend into the first recess 110, and the two ends of the first connecting portion 520 abut against the first splicing unit 100 and the second splicing unit 200 along the second direction together with the two ends of the first force receiving portion 510, so as to increase the contact area of the first connecting piece 500 and the first recess 110 when the first connecting piece 500 abuts against the first recess 110 along the second direction, and to enhance the splicing strength.

[0035] Similarly, the second connecting portion 620 is arranged at two sides of the second force receiving portion 610. The second connecting portion 620 can extend into the second recess 120, and the two ends of the second connecting portion 620 abut against the first splicing unit 100 and the third splicing unit 300 along the first direction together with the two ends of the second force receiving portion 610, so as to increase the contact area of the second connecting piece 600 and the second recess 120 when the second connecting piece 600 abuts against the second recess 120 along the first direction, and to enhance the splicing strength.

[0036] Further, please refer to Figures 4-6At least two first connecting portions 520 are provided on the same side of the first force-bearing portion 510, and a first recess 530 is formed between the two first connecting portions 520; a first protrusion 111 is provided on the bottom surface of the first recess 110, the first protrusion 111 extends into the first recess 530 and abuts against the first connecting portion 520 in the second direction; at least two second connecting portions 620 are provided on the same side of the second force-bearing portion 610, and a second recess 630 is formed between the two second connecting portions 620; a second protrusion 121 is provided on the bottom surface of the second recess 120, the second protrusion 121 extends into the second recess 630 and abuts against the second connecting portion 620 in the first direction.

[0037] Specifically, two or more first connecting portions 520 are provided on the same side of the first force-bearing portion 510, thereby forming a first recess 530 between two adjacent first connecting portions 520. The bottom surface of the first recess 110 protrudes outward to form a first protrusion 111. The first protrusion 111 can extend into the first recess 530, and at the same time, the two sides of the first protrusion 111 abut against the two first connecting portions 520 along the second direction, thereby increasing the contact area when the first connector 500 abuts against the first recess 110 along the second direction, and further improving the splicing strength.

[0038] Similarly, two or more second connecting portions 620 are provided on the same side of the second force-bearing portion 610, thereby forming a second recess 630 between two adjacent second connecting portions 620. The bottom surface of the second recess 120 protrudes outward to form a second protrusion 121. The second protrusion 121 can extend into the second recess 630, and at the same time, the two sides of the second protrusion 121 abut against the two second connecting portions 620 along the first direction, thereby increasing the contact area when the second connector 600 abuts against the second recess 120 along the first direction, and further improving the splicing strength.

[0039] For example, please refer to Figure 5 The first connector 500 is shaped like an "I"; please refer to... Figure 6 The second connector 600 is set in an "H" shape.

[0040] Further, the first splicing unit 100 has a first surface which is inwardly recessed to form a first recess 110; the second splicing unit 200 has a second surface which is inwardly recessed to form a first recess 110; wherein the ratio of the minimum dimension of the first force receiving part 510 in the second direction to the minimum dimension of the first surface or the second surface in the second direction is between 0.3 and 0.8, for example, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, etc. Specifically, the ratio can be specifically understood as the ratio of the length of the first connecting piece in the second direction to the length of the contact surface (the first surface and the second surface) of the first splicing unit and the second splicing unit in the second direction. By setting the ratio to be between 0.3 and 0.8, it can be ensured that the first connecting piece has sufficient length to cover the contact surface (the first surface and the second surface) of the first splicing unit and the second splicing unit. When the first splicing unit and the second splicing unit have a force in the second direction, the first connecting piece has sufficient strength to constrain, while ensuring that the first splicing unit and the second splicing unit do not have relative movement in the second direction, it can prevent the first connecting piece from deforming too much or even breaking.

[0041] The first splicing unit 100 has a third surface which is inwardly recessed to form a second recess 120; the third splicing unit 300 has a fourth surface which is inwardly recessed to form a second recess 120; wherein the ratio of the minimum dimension of the second force receiving part 610 in the first direction to the minimum dimension of the third surface or the fourth surface in the first direction is between 0.3 and 0.8, for example, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, etc. Specifically, the ratio can be specifically understood as the ratio of the length of the second connecting piece in the first direction to the length of the contact surface (the third surface and the fourth surface) of the first splicing unit and the third splicing unit in the first direction. By setting the ratio to be between 0.3 and 0.8, it can be ensured that the second connecting piece has sufficient length to cover the contact surface (the third surface and the fourth surface) of the first splicing unit and the third splicing unit. When the first splicing unit and the third splicing unit have a force in the first direction, the second connecting piece has sufficient strength to constrain, while ensuring that the first splicing unit and the third splicing unit do not have relative movement in the first direction, it can prevent the second connecting piece from deforming too much or even breaking.

[0042] Further, the first connecting member 500 has a first component located in the first recess 110 of the first splicing unit 100 and a second component located in the first recess 110 of the second splicing unit 200, the first component and the second component are symmetrical about a first symmetry axis parallel to the second direction; the second connecting member 600 has a third component located in the second recess 120 of the first splicing unit 100 and a fourth component located in the second recess 120 of the third splicing unit 300, the third component and the fourth component are symmetrical about a second symmetry axis parallel to the first direction.

[0043] Specifically, the first component and the second component are symmetrical, so that the contact area of the first component when abutting against the first splicing unit 100 along the second direction is equal to the contact area of the second component when abutting against the second splicing unit 200 along the second direction, so that the stress of the first component and the second component along the second direction is equal, thereby avoiding the first connecting member 500 generating shear force in the width direction due to uneven stress on both sides, improving the upper limit of the stress of the first connecting member 500, and enhancing the splicing strength of the first splicing unit 100 and the second splicing unit 200.

[0044] Similarly, the third component and the fourth component are symmetrical, so that the contact area of the third component when abutting against the first splicing unit 100 along the first direction is equal to the contact area of the fourth component when abutting against the third splicing unit 300 along the first direction, so that the stress of the third component and the fourth component along the first direction is equal, thereby avoiding the second connecting member 600 generating shear force in the width direction due to uneven stress on both sides, improving the upper limit of the stress of the second connecting member 600, and enhancing the splicing strength of the first splicing unit 100 and the third splicing unit 300.

[0045] In the embodiment, the first splicing unit 100, the second splicing unit 200, the third splicing unit 300, the first connecting member 500 and the second connecting member 600 all include a plurality of unit cells 101 connected to each other; the unit cell 101 can be made by 3D printing and has elasticity, and the deformation of the unit cell can generate elastic force, Figure 7 The type of unit cell (Kelvin lattice) shown in the figure is only an example and does not limit the scope of protection. Specifically, part of the unit cells 101 of the first connecting member 500 are aligned or misaligned with part of the unit cells 101 of the first splicing unit 100 in the second direction, and another part of the unit cells 101 of the first connecting member 500 are aligned or misaligned with part of the unit cells 101 of the second splicing unit 200 in the second direction; part of the unit cells 101 of the second connecting member 600 are aligned or misaligned with part of the unit cells 101 of the first splicing unit 100 in the first direction, and another part of the unit cells 101 of the second connecting member 600 are aligned or misaligned with part of the unit cells 101 of the third splicing unit 300 in the first direction.

[0046] Since the first splicing unit 100, the second splicing unit 200, the third splicing unit 300, the first connecting piece 500 and the second connecting piece 600 are all composed of the unit cell 101, no new material needs to be introduced for splicing, so that the support force and the elastic force and other performances of the elastic pad formed by splicing are more uniform, thereby avoiding the situation that the support force and the elastic force at the splicing positions of the plurality of splicing units are greatly different from other positions due to the introduction of new materials. In this way, the consistency of the elastic pad is enhanced.

[0047] For the specific structure of the alignment of the unit cell 101: the first stress receiving part 510 has a first component part located in the first recess 110 of the first splicing unit 100 and a second component part located in the first recess 110 of the second splicing unit 200; the projection of the part of the unit cell 101 of the first component part in the second direction coincides with the projection of the part of the unit cell 101 of the first splicing unit 100 in the second direction; the projection of the part of the unit cell 101 of the second component part in the second direction coincides with the projection of the part of the unit cell 101 of the second splicing unit 200 in the second direction; the second stress receiving part 610 has a third component part located in the second recess 120 of the first splicing unit 100 and a fourth component part located in the second recess 120 of the third splicing unit 300; the projection of the part of the unit cell 101 of the third component part in the first direction coincides with the projection of the part of the unit cell 101 of the first splicing unit 100 in the first direction; the projection of the part of the unit cell 101 of the fourth component part in the first direction coincides with the projection of the part of the unit cell 101 of the third splicing unit 300 in the first direction.

[0048] Specifically, the part of the unit cell 101 of the first component part is aligned with the part of the unit cell 101 of the first splicing unit 100 in the second direction; the part of the unit cell 101 of the second component part is aligned with the part of the unit cell 101 of the second splicing unit 200 in the second direction; the part of the unit cell 101 of the third component part is aligned with the part of the unit cell 101 of the first splicing unit 100 in the first direction; and the part of the unit cell 101 of the fourth component part is aligned with the part of the unit cell 101 of the third splicing unit 300 in the first direction. In this way, the plurality of contact surfaces between the unit cell 101 of the splicing unit and the unit cell 101 of the connecting piece are located in the same plane, and the support force and the elastic force at the splicing positions of the splicing unit and the plurality of splicing units are closer, thereby enhancing the consistency of the elastic pad.

[0049] Please refer to Figure 7 and Figure 8The cell 101 is a polyhedral structure having a connecting portion and an abutting portion. The connecting portions of adjacent cells 101 are connected to each other to form the third recess 102 between the abutting portions. For example, the cell 101 can be divided into a connecting portion in the middle and two abutting portions at the upper and lower ends of the connecting portion in the height direction, and the abutting portions are inclined inward. Thus, when the connecting portions of the plurality of cells 101 are connected to each other, the abutting portions at the upper end of the connecting portion are enclosed to form the third recess 102, and the abutting portions at the lower end of the connecting portion are also enclosed to form the third recess 102. It should be noted that the connecting portion and the abutting portion are not a certain region in the structure of the cell 101. The division of the regions of the connecting portion and the abutting portion depends on the direction of splicing. If the splicing structure is spliced in the horizontal direction, the cell 101 can also be divided into a connecting portion and two abutting portions in the horizontal direction, and the plurality of abutting portions are enclosed to form the third recess 102.

[0050] Please continue to refer to Figure 7 and Figure 8 For the specific structure of the misaligned cell 101: The partial cells 101 of the first connecting member 500 are misaligned with the partial cells 101 of the first splicing unit 100 or the second splicing unit 200 in the second direction, so that the abutting portions located in the first connecting member 500 at least partially extend into the third recess 102 of the first splicing unit 100 or the second splicing unit 200; and / or, the abutting portions located in the first splicing unit 100 or the second splicing unit 200 at least partially extend into the third recess 102 located in the first connecting member 500; The partial cells 101 of the second connecting member 600 are misaligned with the partial cells 101 of the first splicing unit 100 or the third splicing unit 300 in the first direction, so that the abutting portions located in the second connecting member 600 at least partially extend into the third recess 102 of the first splicing unit 100 or the third splicing unit 300; and / or, the abutting portions located in the first splicing unit 100 or the third splicing unit 300 at least partially extend into the third recess 102 located in the second connecting member 600.

[0051] Specifically, the abutting portion of the partial cell 101 of the first connecting piece 500 can at least partially extend into the third recess 102 between the plurality of cells 101 of the first or second splicing unit 100, 200, and / or the abutting portion of the partial cell 101 of the first or second splicing unit 100, 200 can at least partially extend into the third recess 102 between the plurality of cells 101 of the first connecting piece 500; the abutting portion of the partial cell 101 of the second connecting piece 600 can at least partially extend into the third recess 102 between the plurality of cells 101 of the first or third splicing unit 100, 300, and / or the abutting portion of the partial cell 101 of the first or third splicing unit 100, 300 can at least partially extend into the third recess 102 between the plurality of cells 101 of the second connecting piece 600. Thus, the plurality of contact surfaces between the connecting piece and the splicing unit form a shape similar to a zigzag or a wave, thereby enhancing the connection strength at the splicing position.

[0052] Please refer to Figures 1-3 The embodiment further discloses an elastic pad comprising the splicing structure and a fourth splicing unit 400, the fourth splicing unit 400 is arranged along the first direction with the third splicing unit 300, the fourth splicing unit 400 and the third splicing unit 300 are both provided with a third recess 130; a third connecting piece 700 is further arranged between the fourth splicing unit 400 and the third splicing unit 300, the third connecting piece 700 comprises a third stress portion extending along the second direction; the third stress portion extends into the third recess 130 of the third splicing unit 300 and the third recess 130 of the fourth splicing unit 400 along the first direction, and both ends of the third stress portion along the second direction abut against the third splicing unit 300 and the fourth splicing unit 400; the fourth splicing unit 400 is arranged along the second direction with the second splicing unit 200, the fourth splicing unit 400 and the second splicing unit 200 are both provided with a fourth recess 140; a fourth connecting piece 800 is further arranged between the fourth splicing unit 400 and the second splicing unit 200, the fourth connecting piece 800 comprises a fourth stress portion extending along the first direction; the fourth stress portion extends into the fourth recess 140 of the second splicing unit 200 and the fourth recess 140 of the fourth splicing unit 400 along the second direction, and both ends of the fourth stress portion along the first direction abut against the second splicing unit 200 and the fourth splicing unit 400. Exemplarily, the elastic pad can be used as a mattress or other purposes.

[0053] Specifically, the first splicing unit 100 realizes geometric interlocking through the first connecting piece 500 and the second connecting piece 600, the second splicing unit 200 realizes geometric interlocking through the first connecting piece 500 and the fourth connecting piece 800, the third splicing unit 300 realizes geometric interlocking through the second connecting piece 600 and the third connecting piece 700, and the fourth splicing unit 400 realizes geometric interlocking through the third connecting piece 700 and the fourth connecting piece 800. In this way, the first splicing unit 100, the second splicing unit 200, the third splicing unit 300 and the fourth splicing unit 400 are arranged in a rectangular whole line, realizing the mutual locking between the plurality of splicing units, so as to be spliced into a complete mattress.

[0054] It should be noted that the first splicing unit 100, the second splicing unit 200, the third splicing unit 300 and the fourth splicing unit 400 have the same structure, and are only distinguished for the convenience of description. When 3D printing, the printing head only needs to be printed according to the same path to manufacture a plurality of splicing units, so as to facilitate modular production. Similarly, the first connecting piece 500, the second connecting piece 600, the third connecting piece 700 and the fourth connecting piece 800 also have the same structure, only the angle of placement is different, and modular production can be realized.

[0055] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above-mentioned embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A splicing structure, characterized in that, It includes a first splicing unit, a second splicing unit, a third splicing unit, a first connector, and a second connector; The first splicing unit and the second splicing unit are arranged along a first direction, and both the first splicing unit and the second splicing unit are provided with a first recess; the first connector includes a first force-receiving part extending along a second direction, the first force-receiving part extending into the first recess of the first splicing unit and the first recess of the second splicing unit along the first direction, and both ends of the first force-receiving part along the second direction abut against the first splicing unit and the second splicing unit to lock the position of the first splicing unit relative to the second splicing unit in the second direction; the first direction intersects the second direction; The first splicing unit and the third splicing unit are arranged along a second direction, and both the first splicing unit and the third splicing unit are provided with a second recess; the second connector includes a second force-receiving part extending along a first direction, the second force-receiving part extending into the second recess of the first splicing unit and the second recess of the third splicing unit along the second direction, and both ends of the second force-receiving part along the first direction abut against the first splicing unit and the third splicing unit to lock the position of the first splicing unit relative to the third splicing unit in the first direction.

2. The splicing structure according to claim 1, characterized in that, The first force-receiving part has a larger dimension in the second direction than its dimension in the first direction, and the second force-receiving part has a larger dimension in the first direction than its dimension in the second direction.

3. The splicing structure according to claim 1, characterized in that, The first connector further includes at least two first connecting portions respectively connected to both sides of the first force-bearing portion and extending along the first direction. The first connecting portions extend into the first recess along the first direction, and both ends of the first connecting portions along the second direction abut against the first splicing unit and the second splicing unit. The second connector further includes at least two second connecting portions respectively connected to both sides of the second force-bearing portion and extending along the second direction. The second connecting portions extend into the second recess along the second direction, and both ends of the second connecting portions along the first direction abut against the first splicing unit and the third splicing unit.

4. The splicing structure according to claim 3, characterized in that, At least two first connecting portions are provided on the same side of the first force-bearing portion, and a first recess is formed between the two first connecting portions; a first protrusion is provided on the bottom surface of the first recess, and the first protrusion extends into the first recess and abuts against the first connecting portion along the second direction. At least two second connecting portions are provided on the same side of the second force-bearing portion, and a second recess is formed between the two second connecting portions; a second protrusion is provided on the bottom surface of the second recess, and the second protrusion extends into the second recess and abuts against the second connecting portion in the first direction.

5. The splicing structure according to claim 1, characterized in that, The first splicing unit has a first surface, which is recessed inward to form the first recess; the second splicing unit has a second surface, which is recessed inward to form the first recess. The first splicing unit has a third surface, which is recessed inward to form the second recess; the third splicing unit has a fourth surface, which is recessed inward to form the second recess.

6. The splicing structure according to claim 1, characterized in that, The first connector has a first component located within the first recess of the first splicing unit and a second component located within the first recess of the second splicing unit, the first component and the second component being symmetrical about a first axis of symmetry parallel to a second direction; The second connector has a third component located within the second recess of the first splicing unit and a fourth component located within the second recess of the third splicing unit, the third component and the fourth component being symmetrical about a second axis of symmetry parallel to a first direction.

7. The splicing structure according to claim 1, characterized in that, The first splicing unit, the second splicing unit, the third splicing unit, the first connector, and the second connector all include multiple interconnected unit cells; A portion of the unit cells of the first connector are aligned or misaligned with a portion of the unit cells of the first splicing unit in a second direction; another portion of the unit cells of the first connector are aligned or misaligned with a portion of the unit cells of the second splicing unit in a second direction. A portion of the unit cells of the second connector are aligned or misaligned with a portion of the unit cells of the first splicing unit in a first direction, and another portion of the unit cells of the second connector are aligned or misaligned with a portion of the unit cells of the third splicing unit in a first direction.

8. The splicing structure according to claim 7, characterized in that, The first force-bearing part has a first component located within the first recess of the first splicing unit, and a second component located within the first recess of the second splicing unit; the projection of a portion of the cell of the first component in the second direction coincides with the projection of a portion of the cell of the first splicing unit in the second direction; the projection of a portion of the cell of the second component in the second direction coincides with the projection of a portion of the cell of the second splicing unit in the second direction. The second force-bearing part has a third component located within the second recess of the first splicing unit, and a fourth component located within the second recess of the third splicing unit; the projection of a portion of the cell of the third component in the first direction coincides with the projection of a portion of the cell of the first splicing unit in the first direction; the projection of a portion of the cell of the fourth component in the first direction coincides with the projection of a portion of the cell of the third splicing unit in the first direction.

9. The splicing structure according to claim 7, characterized in that, The unit cell has a connecting portion and an abutting portion, and the connecting portions of adjacent unit cells are connected to each other so that a third recess is formed between the plurality of abutting portions; A portion of the unit cell of the first connector is misaligned with a portion of the unit cell of the first splicing unit or the second splicing unit along a second direction, such that the abutment portion located in the first connector at least partially extends into the third recess of the first splicing unit or the second splicing unit; and / or, the abutment portion located in the first splicing unit or the second splicing unit at least partially extends into the third recess of the first connector; A portion of the unit cell of the second connector is misaligned with a portion of the unit cell of the first splicing unit or the third splicing unit along a first direction, such that the abutment portion located in the second connector at least partially extends into the third recess of the first splicing unit or the third splicing unit; and / or, the abutment portion located in the first splicing unit or the third splicing unit at least partially extends into the third recess of the second connector.

10. An elastic pad, characterized in that, include: The splicing structure as described in any one of claims 1 to 9; A fourth splicing unit is arranged along a first direction with the third splicing unit. Both the fourth splicing unit and the third splicing unit are provided with a third recess. A third connector is also provided between the fourth splicing unit and the third splicing unit. The third connector includes a third force-bearing part extending along a second direction. The third force-bearing part extends into the third recess of the third splicing unit and the third recess of the fourth splicing unit along the first direction. Both ends of the third force-bearing part along the second direction abut against the third splicing unit and the fourth splicing unit. The fourth splicing unit and the second splicing unit are arranged along a second direction, and both the fourth splicing unit and the second splicing unit are provided with a fourth recess; a fourth connector is also provided between the fourth splicing unit and the second splicing unit, and the fourth connector includes a fourth force-bearing part extending along a first direction; the fourth force-bearing part extends into the fourth recess of the second splicing unit and the fourth recess of the fourth splicing unit along the second direction, and both ends of the fourth force-bearing part along the first direction abut against the second splicing unit and the fourth splicing unit.

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