CN117918671A

CN117918671A - Support assembly

Info

Publication number: CN117918671A
Application number: CN202211258136.3A
Authority: CN
Inventors: 陈胜发; 陈峰明; 邵志敏
Original assignee: Chenda Additive Manufacturing Xiamen Co ltd
Current assignee: Chenda Additive Manufacturing Xiamen Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2024-04-26

Abstract

The present invention provides a support assembly comprising at least two standard blocks connected to each other and selected from the group consisting of: a first standard block having a first elastic coefficient and a first calibration height, a second standard block having a second elastic coefficient and a first calibration height, a third standard block having a first elastic coefficient and a second calibration height, and a fourth standard block having a second elastic coefficient and a second calibration height. Each standard block is made by 3D printing and has the same crystal lattice, and each standard block has a bonding structure.

Description

Support assembly

Technical Field

The present invention relates to a support assembly, and more particularly to a modularly constructed support assembly.

Background

Many articles of daily use, such as seats, beds, pillows, shoes, etc., are internally provided with a support structure sufficient to support the load of use, so that the articles have proper support strength.

For example, the CN203244185U patent discloses a combined high-low pillow formed by combining different base pillows and external components (e.g., buttons) with each other. However, the basic pillow block is made of foaming materials instead of 3D printing, so that the basic pillow block does not have a lattice structure, and has the advantages of hardness adjustment and convenience in cleaning.

In addition, CN113211797a discloses a sponge structure formed by 3D printing, which can adjust hardness and deformation direction. However, the sponge structure described above is an integral structure obtained by establishing a basic unit after setting a load condition and 3D printing a sketch model generated based on the established basic unit, and therefore does not have a unit structure capable of being joined to each other.

Disclosure of Invention

On the other hand, taking the pillow as an example, although various manufacturers have different designs and materials, the manufactured or sold products are mostly designed in a single specification, that is, the sizes of the pillows are fixed, and the physical properties such as weight, elasticity, softness and the like are the same. Therefore, when different users have respective demands, the flexibility in purchasing and using will be greatly limited.

In order to customize the pillow according to the needs of different users, some manufacturers try to use 3D printing to manufacture a whole pillow body, and adjust parameters such as structural density and strut size in a printing sketch, so as to make a heterogeneous pillow. However, when a pillow with a large volume is required to be produced, a machine with a large processing tank or processing platform is required to process the pillow, and the cost required for production is increased intangibly. In addition, when the manufactured object is bigger, the internal defect caused by insufficient printing yield will seriously affect the quality of the product, and when the user feels airtight, bad touch or dirty when using, the integrally formed structure is not easy to take out, replace or clean the inside, thus causing the burden of the user in no way.

The inventor has paid attention to the mind and is careful to research, and further developed a modularized support assembly so as to achieve the effects of corresponding to different use requirements and local adjustment.

In order to solve the above-mentioned problems, one of the technical solutions adopted by the present invention is to provide a support assembly, which comprises at least two standard blocks, wherein the standard blocks are connected with each other and are selected from the following groups: a first standard block having a first elastic coefficient and a first calibration height, a second standard block having a second elastic coefficient and a first calibration height, a third standard block having a first elastic coefficient and a second calibration height, and a fourth standard block having a second elastic coefficient and a second calibration height. Each standard block is made by 3D printing and has the same crystal lattice, and each standard block has a bonding structure.

Preferably, the first elastic coefficient is 3-15 newtons/millimeter.

Preferably, the second elastic coefficient is 10-40 newton/millimeter.

Preferably, the ratio of the first elastic coefficient to the second elastic coefficient is 0.075 to 1.5.

Preferably, the first calibration height is an average distance from a top surface to a bottom surface of each of the first standard block or the second standard block, and the second calibration height is an average distance from a top surface to a bottom surface of each of the third standard block or the fourth standard block.

Preferably, the absolute value of the slope of the upper surface of the support assembly is no greater than 0.75.

Preferably, the support assembly is formed of a single layer of standard blocks in the height direction, the first calibration height is smaller than the second calibration height, and the difference between the first calibration height and the second calibration height is not greater than 75% of the second calibration height.

Preferably, the lattice size of the lattice is 8.5 to 10 mm.

Preferably, the diameter of the lattice column of the lattice is 0.9 to 1.0 mm.

Preferably, the engaging structure is selected from the group consisting of a slide rail, a latch, a fastener and an adhesive fastener.

Therefore, the support assembly of the invention can be customized according to the requirements of users through the combination of different types of standard blocks so as to correspond to different use requirements. In addition, because each standard block can be connected or disassembled through the joint structure, when part of standard blocks need to be replaced or adjusted, the standard blocks can be quickly realized, thereby achieving the effect of local adjustment

Drawings

For a further understanding of the nature and aspects of the present invention, reference should be made to the following detailed description of the invention and the accompanying drawings. It is to be understood that the drawings are provided solely for the purposes of reference and illustration and are not intended as a definition of the limits of the invention.

FIG. 1 is a schematic perspective view of an embodiment of a support assembly of the present invention.

FIG. 2 is the first standard block of FIG. 1 (A); (B) a second standard block; (C) a third standard block; and (D) a perspective view of a fourth standard block.

Fig. 3 is a schematic perspective view of two adjacent lattices in the standard block of fig. 1.

FIG. 4 is a schematic drawing of the tensile curve of examples A-C of the standard block of the present invention.

FIG. 5 is a perspective view of another embodiment of a modular block of the support assembly of the present invention; and (B) a profile curve coordinate schematic.

FIG. 6 is a schematic diagram showing the combination of two adjacent standard blocks in FIG. 1.

FIG. 7 is a schematic diagram showing the combination of two adjacent standard blocks of another embodiment of the support assembly of the present invention.

FIG. 8 is a schematic diagram of the combination of two adjacent standard blocks of a further embodiment of the support assembly of the present invention.

Reference numerals

1 A support assembly; 100. 100' standard block: 100a first standard block: 100b a second standard block; 100c a third standard block; 100d fourth standard block; 110 lattice; 112 lattice struts; 120a, 120b, 120 c; 122a slide block; 122b clamping tenons; 122c a fastener; 124a chute; 124b card slot; h ₁ is a first calibration height; h ₂ second nominal height; k ₁ first modulus of elasticity; k ₂ second modulus of elasticity; l is; lattice size; x length; x, y; direction.

Detailed Description

The foregoing and other technical aspects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments, which proceeds with reference to the accompanying drawings. It is noted that the directional terms mentioned in the following embodiments, for example: upper, lower, left, right, front or rear, etc., are merely references to the directions of the drawings. Accordingly, the directional terminology is used for purposes of illustration and is not intended to be limiting of the invention. In addition, in the following embodiments, the same or similar components will be denoted by the same or similar numerals.

Referring to fig. 1 and 2, fig. 1 is a schematic perspective view of an embodiment of a support assembly according to the present invention, and fig. 2 is a first standard block in fig. 1 (a); (B) a second standard block; (C) a third standard block; and (D) a perspective view of a fourth standard block. The support assembly 1 of the present embodiment is applied to an internal support structure of a pillow, for example, but is also applicable to a component such as an insole, a chair cushion, a backrest, a lining, etc. which needs to be compatible with both support strength and contact comfort, which the present invention is not limited to. On the other hand, the support assembly 1 comprises at least two standard blocks 100, these standard blocks 100 being connected to each other and selected from the group: a first standard block 100a having a first spring constant K ₁ and a first nominal height H ₁, a second standard block 100b having a second spring constant K ₂ and a first nominal height H ₁, a third standard block 100c having a first spring constant K ₁ and a second nominal height H ₂, and a fourth standard block 100d having a second spring constant K ₂ and a second nominal height H ₂.

In detail, in order to correspond to the shape of the head of the user or the deformation amount required for different parts, the support assembly 1 includes at least two standard blocks 100 that are different from each other, for example, the standard blocks 100 are different in calibration height or elasticity coefficient, or the standard blocks are different in calibration height and elasticity coefficient. In one embodiment, the first elastic coefficient K ₁ is, for example, 3-15N/mm, and the second elastic coefficient K ₂ is, for example, 10-40N/mm, and in this example, the first elastic coefficient K ₁ is 5.03N/mm, and the second elastic coefficient K ₂ is 33.46N/mm. In other words, under the same load, the first standard block 100a and the third standard block 100c with the first elastic coefficient K ₁ have larger deformation amounts relative to the second standard block 100b and the fourth standard block 100d with the second elastic coefficient K ₂, and it is found through multiple experiments that when the ratio of the first elastic coefficient K ₁ to the second elastic coefficient K ₂ falls within the range of 0.075-1.5, the standard blocks 100 can be stably connected without falling off while being deformed. Therefore, the support member assembly 1 can be connected with the fourth standard block 100d and the first standard block 100a and the third standard block 100c through the second standard block 100b and the fourth standard block 100d with higher stiffness, so as to meet the requirements of different parts and use of different users.

On the other hand, the standard block 100 of the present embodiment is, for example, an elastic foam block made by 3D printing, wherein the 3D printing process may be a DLP (DIRECT LIGHT Processing) photo-curing 3D printing process, and the material is polyurethane foam (extruded polyurethane, EPU). Thus, the printed standard block 100 has the effects of multiple pores, light texture, sound insulation, collision resistance, shock resistance, etc., but the invention is not limited thereto, and other optional elastic materials or foaming materials can be selected according to the application products, or 3D printing technologies such as SLA (Stereolithography), LCD (Liquid CRYSTAL DISPLAY), etc. can be selected according to the precision and cost considerations.

Referring to fig. 3 and 4, fig. 3 is a schematic perspective view of two adjacent lattices in the standard block of fig. 1, and fig. 4 is a schematic drawing of a stretching curve of an embodiment a-C of the standard block of the present invention. Furthermore, each standard block 100 manufactured by the 3D printing method may have substantially the same crystal lattice 110, where substantially the same means that each crystal lattice 110 has the same crystal structure (face-centered cubic, body-centered cubic, six-sided cubic, etc.), and has similar crystal lattice size L and lattice pillars 112. In the present embodiment, the lattice size L of the lattice 110 is defined as the center distance of two lattices 110, for example, 9.5 mm, but may vary from 8.5 mm to 10 mm in other embodiments; the diameter of the lattice pillars 112 is, for example, 0.95 mm, but may vary from 0.9 mm to 1.0 mm in other embodiments. By varying the lattice size L and the diameter of the lattice struts 112, the first and second elastic coefficients K ₁ and K ₂ are set forth in Table one:

List one

Thus, since each standard block 100 has substantially the same lattice 110, when the support assembly 1 is pressed or pulled from all directions, these lattices 110, which are identical to each other, can uniformly transmit load to the entire support structure, so that deformation amounts in all directions are uniform and continuous. In addition, the 3D printing method can not only rapidly obtain the finished product, but also reduce the weight of the product due to the gaps between the lattice struts 112, and the manufactured finished product has higher precision, so that the use feeling can be further improved.

Referring to fig. 5, fig. 5 is a perspective view of another embodiment of a standard block of the support assembly according to the present invention; and (B) a profile curve coordinate schematic. This embodiment is substantially the same as the embodiment of fig. 2, with the main differences: the top surface of the standard block 100' of this embodiment is not a mere plane, but includes at least a portion of a curved profile, as shown in fig. 5 (a).

In detail, in the case of being connected to other standard blocks 100', the top surface of each standard block 100' may include various surfaces such as a true plane, a slope, a curved surface (including a convex surface and a concave surface), or a combination of the above surfaces, which is not limited thereto. In this case, the first standard height H ₁ is defined as an average distance from the top surface to the bottom surface of each of the first standard block 100a or the second standard block 100b, and the second standard height H ₂ is defined as an average distance from the top surface to the bottom surface of each of the third standard block 100c or the fourth standard block 100d, wherein the bottom surface is a reference surface for mounting a fixture, and the top surface is an upper surface for contacting a user. Taking this embodiment as an example, if the side profile of the standard block 100 'is represented by the x-y coordinate axis, the calibration height of the standard block 100' is:

wherein x and y are directions of coordinate axes orthogonal to each other, The length of the standard block 100' in the width direction. Thus, when the standard blocks 100' are connected to each other, the upper surface of the support assembly 1 is not limited to an arrangement of a plurality of true planes, but can be designed to be a combination of different curved surfaces and inclined surfaces, even to the extent of no seam, thereby further improving the comfort of use of the support assembly 1.

On the other hand, in an embodiment, the support member assemblies 1 may be respectively disposed in different elements of the same article for the purpose of supporting and cushioning. For example, the pillow to which the support assembly 1 is applied may include a headrest bearing the head of the user and a shoulder pillow bearing the shoulder of the user, and by adjusting 100 kinds and height variations of the standard blocks of the headrest and the shoulder pillow, the comfort rating as shown in table two may be obtained:

watch II

From the results of table two, it can be seen that the comfort level of the user is not determined solely by the stiffness of the headrest and the shoulder rest, but only by the height difference between the two, and the proper matching of the two parameters is required to obtain the desired comfort level, thus again proving the necessity of the support assembly 1 formed by connecting at least two different standard blocks 100 to each other.

On the other hand, it is known through many experiments that when the absolute value of the slope of the upper surface of the support assembly 1 (i.e. the surface contacted by the head and the shoulder of the user) is not greater than 0.75, i.e. the support assembly 1 has a smoother upper surface, the head and the shoulder of the user will not feel a significant drop or relative protrusion, which is beneficial to improving the comfort of use.

In one possible embodiment, the support assembly 1 is formed by a single layer of standard blocks 100 (as shown in fig. 1), wherein the first calibration height H ₁ is smaller than the second calibration height H ₂, and the difference between the first calibration height H ₁ and the second calibration height H ₂ is not greater than 75% of the second calibration height H ₂. In other words, in the present embodiment, the height of the support assembly 1 is directly determined by the first calibration height H ₁ and the second calibration height H ₂, and the combination of the first standard block 100a and the second standard block 100b with the first calibration height H ₁ and the top surface of the third standard block 100c and the fourth standard block 100d with the second calibration height H ₂ is the upper surface of the support assembly 1. With such a configuration, when any one of the areas of the standard block 100 has an internal defect (e.g., broken lattice struts 112) or a cleaning requirement, the user can immediately remove it for replacement or cleaning without having to replace or clean the entire set of items at one time.

Referring to fig. 6, fig. 6 is a schematic diagram illustrating the combination of two adjacent standard blocks in fig. 1. As shown in fig. 6, each standard block 100 has a joint structure 120a for connecting with each other adjacent standard blocks 100. Specifically, the combination structure 120a of the two adjacent standard blocks 100 may be a sliding rail, that is, one standard block 100 may have a sliding block 122a, and the other standard block 100 may have a sliding groove 124a corresponding to the sliding block 122a, so that when the sliding block 122a slides into the sliding groove 124a along the extending direction of the sliding groove 124a, the two standard blocks 100 may be connected to each other and achieve the effect of locking in the engaging direction. When a user wants to remove one of the standard blocks 100 for replacement or cleaning, the two standard blocks 100 are only required to slide relatively along the extending direction of the sliding groove 124a, so that the two standard blocks 100 can be released from each other, which is quite simple and convenient.

Referring to fig. 7, fig. 7 is a schematic diagram showing the combination of two adjacent standard blocks of another embodiment of the support assembly of the present invention. The standard block 100 of the present embodiment is substantially similar to the standard block 100 of the embodiment of fig. 6, with the main differences: the joint structure 120b of the standard block 100 of the present embodiment is a latch structure.

Specifically, one standard block 100 of the present embodiment may have a latch 122b, and the other standard block 100 may have a slot 124b corresponding to the latch 122b, so that when the latch 122b is embedded in the slot 124b along the embedding direction, the two standard blocks 100 can be connected to each other and achieve the effect of latching. When a user wants to remove one of the standard blocks 100 for replacement or cleaning, the two standard blocks 100 can be separated from each other by only reversely unlocking the two standard blocks 100 along the embedding direction. It should be noted that, although fig. 7 illustrates only the latch 122b and the slot 124b with simple shapes, the latch 122b and the slot 124b may be replaced with other shapes, or even a fastener or a hook with a specific engaging or interlocking structure for relatively fixing the two standard blocks 100 according to practical requirements, which is not limited in the present invention.

Referring to fig. 8, fig. 8 is a schematic diagram showing the combination of two adjacent standard blocks of a support assembly according to another embodiment of the invention. The standard block 100 of the present embodiment is substantially similar to the standard block 100 of the embodiment of fig. 6, with the main differences: the engaging structure 120c of the standard block 100 of the present embodiment is a hook and loop fastener structure.

Specifically, during the process of manufacturing the standard block 100 or after the standard block 100 is manufactured, the adhesive 122c may be selectively disposed on at least one surface of the standard block 100 for bonding, where the adhesive 122c is, for example, a velcro, and may be temporarily fixed with another standard block 100 having a similar-sized adhesive 122c disposed on a surface thereof by applying pressure, and separated by pulling force when there is a need for replacement, so that the effect of quickly replacing the standard block 100 can be achieved.

The above disclosure is only a preferred embodiment of the present invention and is not intended to limit the scope of the claims, so that all equivalent technical changes made by the present specification and drawings are included in the scope of the claims.

Claims

1. A support assembly comprising at least two standard blocks, the at least two standard blocks being connected to each other and selected from the group of:

The first standard block is provided with a first elastic coefficient and a first calibration height;

The second standard block is provided with a second elastic coefficient and the first calibration height;

The third standard block is provided with the first elastic coefficient and the second calibration height; and

A fourth standard block having the second elastic coefficient and the second calibration height;

Wherein each of the standard blocks is made by 3D printing and has substantially the same crystal lattice,

And each of the standard blocks has a joint structure.

2. The support assembly of claim 1, wherein the first modulus of elasticity is 3-15 newtons/millimeter.

3. The support assembly of claim 1, wherein the second spring rate is 10-40 newtons/millimeter.

4. The support assembly of claim 1, wherein the ratio of the first coefficient of elasticity to the second coefficient of elasticity is between 0.075 and 1.5.

5. The support assembly of claim 1, wherein the first nominal height is an average top-to-bottom distance of the first standard block or the second standard block, respectively, and the second nominal height is an average top-to-bottom distance of the third standard block or the fourth standard block, respectively.

6. The support assembly of claim 1, wherein an absolute value of a slope of an upper surface of the support assembly is no greater than 0.75.

7. The support assembly of claim 6, wherein the support assembly is comprised of a single layer standard block in a height direction, the first nominal height is less than the second nominal height, and a difference in height between the first nominal height and the second nominal height is no greater than 75% of the second nominal height.

8. The support assembly of claim 1, wherein the lattice has a lattice size of 8.5 to 10 millimeters.

9. The support assembly of claim 1, wherein the lattice struts of the lattice have a diameter of 0.9 to 1.0 millimeters.

10. The support assembly of claim 1, wherein the engagement structure is selected from the group consisting of a rail, a latch, a fastener, and a clip.