Three-dimensional printing bicycle saddle

Abstract

Some embodiments of the present disclosure provide a three-dimensional printed bicycle saddle that includes a bottom case and a resilient cushion disposed on the bottom case, where the resilient cushion has a bottom surface facing the bottom case and a top surface opposite the bottom surface. The resilient pad has a three-dimensionally printed mesh lattice structure, wherein the three-dimensionally printed mesh lattice structure includes a plurality of lattice struts. The diameter of each of the lattice pillars increases in a gradient manner from the top surface to the bottom surface of the elastic pad, and the difference between the maximum diameter and the minimum diameter of each of the lattice pillars is less than or equal to 0.5 mm, so that the elastic pad has both soft touch and high elasticity in the longitudinal direction from the top surface to the bottom surface. And therefore, the comfort and the supporting performance of the three-dimensional printing bicycle saddle are improved.

Description

Technical Field

[0001] This disclosure pertains to bicycle saddles, and more particularly to bicycle saddles formed by 3D printing. Background Technology

[0002] 3D printing, also known as additive manufacturing, refers to the automated stacking of material layers into a specified shape. For example, controlling the lattice parameters to create a lattice structure for the elastic part of a bicycle saddle. However, stacking lattice structures with the same lattice parameters can easily result in a single type of hardness, making it difficult for a bicycle saddle to combine a soft and bouncy feel with the support to withstand sudden downward pressure. Summary of the Invention

[0003] Embodiments of this disclosure provide a 3D printed bicycle saddle that includes an elastic pad with a gradient diameter of lattice struts to improve the comfort and support of the bicycle saddle.

[0004] According to some embodiments of this disclosure, a three-dimensional printed bicycle saddle includes a base shell and an elastic pad disposed on the base shell, wherein the elastic pad has a bottom surface facing the base shell and a top surface opposite the bottom surface. The elastic pad has a three-dimensional printed mesh lattice structure, wherein the three-dimensional printed mesh lattice structure includes a plurality of lattice pillars, the diameter of each of the lattice pillars increasing in a gradient from the top surface of the elastic pad toward the bottom surface, and the difference between the maximum and minimum diameters of each of the lattice pillars is less than or equal to 0.5 mm.

[0005] In some embodiments, the three-dimensional printed mesh lattice structure includes an ischial region, a nasal tip region, and an intermediate region located between the nasal tip region and the ischial region, wherein the lattice density of the ischial region is greater than the lattice density of the intermediate region and the lattice density of the nasal tip region.

[0006] In some implementations, the lattice density of the intermediate region is less than that of the nose region.

[0007] In some implementations, the ischium region, the intermediate region, and the nasal tip region each have a single lattice unit, wherein the single lattice unit of the ischium region is different from the single lattice unit of the intermediate region and the single lattice unit of the nasal tip region.

[0008] In some implementations, the ischium region, the middle region, and the nasal region have the same single lattice unit.

[0009] In some embodiments, the maximum diameter of each of the lattice pillars in the ischial region is greater than or equal to the maximum diameter of each of the lattice pillars in the intermediate region and the maximum diameter of each of the lattice pillars in the nasal region.

[0010] In some implementations, the lattice pillars of the ischial region, the intermediate region, and the nasal region are interconnected.

[0011] In some implementations, the minimum diameter of each of the lattice pillars is greater than or equal to 0.8 mm.

[0012] In some implementations, the thickness between the bottom and top surfaces of the elastic pad is greater than or equal to 1 cm.

[0013] In some implementations, the lattice units of the three-dimensional printed mesh lattice structure are selected from the group consisting of body-centered cubic lattices, face-centered cubic lattices, fluorite lattices, octave rack lattices, Voronoi lattices, and spiral lattices.

[0014] According to the above embodiments, the three-dimensional printed bicycle seat of this disclosure includes an elastic pad with a three-dimensional printed mesh lattice structure, wherein the diameter of the lattice pillars of the three-dimensional printed mesh lattice structure increases gradually from the top surface to the bottom surface of the elastic pad, and the difference between the maximum diameter and the minimum diameter of the lattice pillars is less than or equal to 0.5 mm, so that the elastic pad has both a soft touch and high elasticity in the longitudinal direction, thereby improving the comfort and support of the three-dimensional printed bicycle seat. Attached Figure Description

[0015] The various aspects of this disclosure can be best understood from the following detailed description when read in conjunction with the accompanying drawings. It should be noted that, in accordance with standard industrial methods, the various features are not drawn to scale. In fact, the dimensions of the various features may be arbitrarily increased or decreased for clarity of discussion.

[0016] Figure 1 A perspective view of a three-dimensional printed bicycle seat is illustrated according to some embodiments of this disclosure;

[0017] Figure 2 Cross-sectional views of the elastic pad are shown according to some embodiments of this disclosure;

[0018] Figure 3A The elastic pad edge is illustrated according to some embodiments of this disclosure. Figure 2 A cross-sectional view of the section AA′ in the diagram;

[0019] Figure 3B Illustrations based on some embodiments of this disclosure Figure 3A An enlarged schematic diagram of the elastic pad in the middle;

[0020] Figures 4A to 4F Lattice units of a three-dimensional printed mesh lattice structure are illustrated according to some embodiments of the present disclosure;

[0021] Figure 5 and Figure 6 Charts illustrating experimental results of three-dimensionally printed bicycle saddles according to some embodiments of this disclosure.

[0022] [Symbol Explanation]

[0023] 100: 3D Printed Bicycle Seat Cushion

[0024] 110: Bottom shell

[0025] 112: Track

[0026] 120: Elastic Pad

[0027] 120b: Bottom surface

[0028] 120t: Top surface

[0029] 122: Right half pad

[0030] 124: Left half pad

[0031] 126: Connecting part

[0032] 130: Ischial area

[0033] 132: Middle Zone

[0034] 134: Nose area

[0035] 136: Connecting part

[0036] 140: Lattice Pillar

[0037] 142, 144: Lattice pillar ends

[0038] AA′: truncated line

[0039] x, y, z: axes Detailed Implementation

[0040] To achieve the different features of the mentioned subject matter, the following disclosure provides many different embodiments or examples. Specific examples of components, configurations, etc., are described below to simplify this disclosure. Of course, these are merely examples and not limiting. For example, in the following description, forming a first feature on or over a second feature may include embodiments where the first and second features are formed in direct contact, and may also include embodiments where an additional feature is formed between the first and second features such that the first and second features do not need to be in direct contact. Additionally, reference numerals and / or letters may be repeated in various examples. This repetition is for simplicity and clarity and does not in itself represent a relationship between the various embodiments and / or configurations discussed.

[0041] Furthermore, this document may use spatial relative terms such as “below,” “under,” “lower,” “above,” “upper,” etc., to facilitate the description of the relationship between one element or feature and another element or feature as shown in the figure. In addition to the orientations shown in the figure, spatial relative terms are intended to include different orientations of the device in use or operation. The device may be oriented in other ways (rotated 90 degrees or in other directions), and the spatial relative descriptive symbols used herein may be interpreted accordingly.

[0042] This disclosure provides a 3D-printed bicycle saddle, comprising a base shell and an elastic pad disposed on the base shell. The elastic pad has a 3D-printed mesh lattice structure comprising multiple lattice pillars, wherein the diameter of the lattice pillars gradually increases from the top surface of the elastic pad towards the bottom surface, and the difference between the maximum and minimum diameters of the lattice pillars is less than or equal to 0.5 mm. This allows the elastic pad to possess both a soft touch and high elasticity in the longitudinal direction from the top surface to the bottom surface, thereby improving the comfort and support of the 3D-printed bicycle saddle.

[0043] According to some embodiments of this disclosure Figure 1 A perspective view of a 3D-printed bicycle saddle 100 is shown. The 3D-printed bicycle saddle 100 includes a base shell 110 and an elastic pad 120. The base shell 110 comprises a relatively rigid material such as metal or carbon fiber, serving as the main support structure of the 3D-printed bicycle saddle 100. The elastic pad 120 is disposed on the base shell 110 and comprises an elastic material such as thermoplastic rubber or thermoplastic polyurethane, thereby achieving shock absorption and improving riding comfort. The elastic pad 120 has a bottom surface 120b facing the base shell 110 and a top surface 120t opposite to the bottom surface 120b, wherein the bottom surface 120b can be fixed to the base shell 110 by means of adhesive or screws. In some embodiments, the other side of the base shell 110 opposite to the elastic pad 120 may include a pair of tracks 112 for fixing the 3D-printed bicycle saddle 100 to the saddle tube of the bicycle.

[0044] The elastic pad 120 is a monolithic structure formed by 3D printing. The elastic pad 120 may include a right half pad 122, a left half pad 124, and a connecting portion 126 located between the right half pad 122 and the left half pad 124. The right half pad 122 and the left half pad 124 each have a 3D-printed mesh lattice structure, thereby enhancing the elasticity and support of the elastic pad 120. The connecting portion 126 physically connects the right half pad 122 and the left half pad 124, giving the elastic pad 120 a symmetrical structure with its axis of symmetry in the y-axis direction. In some embodiments, the top surfaces of the right half pad 122 and the left half pad 124 may be higher than the top surface of the connecting portion 126, resulting in the connecting portion 126 being a relatively recessed area on the top surface 120t of the elastic pad 120, making the right half pad 122 and the left half pad 124 the areas that primarily bear the rider's weight.

[0045] To clearly illustrate the 3D printed mesh lattice structure of elastic pad 120 Figure 2 Illustrations based on some embodiments of this disclosure Figure 1 XY plane cross-sectional view of the left half pad 124 in the middle. Figure 3A Draw the left half of the pad 124 along Figure 2 Cross-sectional view of the xz plane of the intercept AA′ in the diagram. Figure 3B Then draw Figure 3A An enlarged diagram of the left half of pad 124. Although Figures 2 to 3B This is a representative example of the left half of pad 124 as elastic pad 120, but the following reference... Figures 2 to 3B The described content can also be applied to the right half pad 122, so that the elastic pad 120 has a symmetrically configured three-dimensional printed mesh lattice structure.

[0046] refer to Figure 2 The 3D-printed mesh lattice structure of the left half-pad 124 includes an ischial region 130, a central region 132, and a nose region 134 arranged laterally along the y-axis, with the central region 132 located between the ischial region 130 and the nose region 134. The 3D-printed mesh lattice structures of the ischial region 130, central region 132, and nose region 134 each have different arrangements, resulting in different lattice densities among the three regions. Specifically, the ischial region 130 can have a higher lattice density than the central region 132 and the nose region 134, giving it high elasticity and support, making it the region that bears the most rider weight among the three. The lower lattice density of the central region 132 and the nose region 134 increases the softness of the front end of the left half-pad 124, thereby improving riding comfort.

[0047] In some embodiments, the lattice density of the middle region 132 may be less than that of the nose region 134, making the middle region 132 the softest of the three regions and reducing the pressure on the rider. In some embodiments, the left half pad 124 may also include a connecting portion 136 that substantially connects the ischial region 130 and the middle region 132 and substantially connects the middle region 132 and the nose region 134, to connect the three regions with different lattice densities.

[0048] refer to Figure 3A and Figure 3B The three-dimensional printed mesh lattice structure of the left half-pad 124 includes multiple lattice pillars 140, which are interconnected to form multiple lattice units. The diameter of each of the lattice pillars 140 increases from the top surface of the left half-pad 124 (i.e., the top surface 120t of the elastic pad 120) towards the bottom surface (i.e., the bottom surface 120b of the elastic pad 120), such that the diameter of the lattice pillar end 142 near the top surface 120t is smaller than the diameter of the lattice pillar end 144 near the bottom surface 120b. It is worth noting that the three-dimensional printed mesh lattice structure is formed by three-dimensional printing technology, so the diameter of the lattice pillars 140 can increase gradually; that is, the diameter of the lattice pillars 140 changes gradually without a significant step change.

[0049] More specifically, in the direction from the top surface 120t to the bottom surface 120b, the lattice pillars 140 adjacent to the top surface 120t have the smallest diameter, and the lattice pillars 140 adjacent to the bottom surface 120b have the largest diameter. The difference between the maximum and minimum diameters of the lattice pillars 140 is less than or equal to 0.5 mm, causing the relatively soft upper part of the 3D printed mesh lattice structure to gradually become a relatively rigid lower part. Therefore, the left half pad 124 can have both a soft feel and high elasticity in the longitudinal direction from the top surface 120t to the bottom surface 120b. Such a left half pad 124 is less likely to impact the bottom shell below (e.g., when subjected to instantaneous downward pressure). Figure 1 The bottom shell 110 in the 3D printed bicycle seat can improve comfort and support. Furthermore, the difference in diameter of the lattice pillars 140 can enhance the shock absorption of the 3D printed mesh lattice structure and reduce the amount of elastic material used, thus achieving weight reduction. If the difference between the maximum and minimum diameters of the lattice pillars 140 is greater than 0.5 mm, the difference in stiffness between the upper and lower parts of the 3D printed mesh lattice structure may be too large, potentially causing discomfort.

[0050] Although Figure 3A and Figure 3B The cross-sectional view of the ischial region 130 is shown as a representative example of a 3D printed mesh lattice structure, but the above references Figure 3A and Figure 3B The description can also be applied to the intermediate region 132 and the nose region 134. That is, the intermediate region 132 and the nose region 134 also have multiple interconnected lattice pillars 140 and the diameter of the lattice pillars 140 exhibits a gradient change, wherein the difference between the maximum diameter and the minimum diameter of the lattice pillars 140 is less than or equal to 0.5 mm.

[0051] In some embodiments, the difference between the maximum and minimum diameters of the lattice pillars 140 in the ischium region 130, the intermediate region 132, and the nasal tip region 134 can be the same; for example, the difference between the maximum and minimum diameters of all three regions is 0.5 mm. In such embodiments, the ischium region 130, the intermediate region 132, and the nasal tip region 134 can each have different maximum and minimum diameters, such that the maximum diameter of the lattice pillar 140 in the ischium region 130 is greater than the maximum diameter of the lattice pillar 140 in the intermediate region 132 and the maximum diameter of the lattice pillar 140 in the nasal tip region 134. For example, the maximum and minimum diameters of the ischium region 130 can be 1.6 mm and 1.1 mm, respectively, while the maximum and minimum diameters of the nasal tip region 134 can be 1.3 mm and 0.8 mm, respectively. In other embodiments, the maximum diameter of the lattice pillar 140 in the ischium region 130 can be equal to the maximum diameter of the lattice pillar 140 in the intermediate region 132 and / or the maximum diameter of the lattice pillar 140 in the nasal tip region 134.

[0052] In some embodiments, the minimum diameter of the lattice strut 140 can be greater than or equal to 0.8 mm, for example, 0.8 mm, 1.0 mm, 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm, or 2.0 mm, thereby reducing the risk of the upper part of the 3D printed mesh lattice structure being too soft and prone to collapse under stress. In some embodiments, the thickness T between the bottom surface 120b and the top surface 120t of the elastic pad 120 can be greater than or equal to 1 cm, so that the diameter gradient of the lattice strut 140 can improve comfort and support. For example, the thickness T can be between 1 cm and 30 cm, between 1 cm and 20 cm, or between 1 cm and 10 cm. In such embodiments, the thickness T of the ischial region 130 can be greater than the thickness T of the middle region 132 and the nose region 134 to improve the comfort and support of the ischial region 130 as the main load-bearing area.

[0053] The lattice pillars 140 of the ischial region 130, the intermediate region 132, and the nasal tip region 134 are interconnected, so that each of the three regions forms a lattice structure with a single lattice unit, thereby increasing the strength of the 3D printed mesh lattice structure. The lattice units selected for the 3D printed mesh lattice structure can provide high elasticity in a very small space to improve the support of the 3D printed mesh lattice structure. According to some embodiments of this disclosure, Figures 4A to 4F Drawing lattice units of a 3D printed mesh lattice structure, wherein the lattice units can be selected from... Figure 4A The body-centered cubic lattice in Figure 4B The face-centered cubic lattice in [the context of the crystal structure]. Figure 4C Fluorite lattice in Figure 4D The octet in the crystal structure Figure 4E The Voronoi lattice and Figure 4F A group composed of helical lattices (gyroids).

[0054] The ischium region 130, the intermediate region 132, and the nasal tip region 134 each have a single crystal unit, and the single crystal units of the three regions can be the same or different. In some embodiments, the ischium region 130, the intermediate region 132, and the nasal tip region 134 have the same single crystal unit; for example, all three regions are composed of a body-centered cubic lattice structure. In some other embodiments, the single crystal unit of the ischium region 130 can be different from the single crystal units of the intermediate region 132 and the nasal tip region 134. For example, the ischium region 130 can be composed of a Voronoi lattice structure, while the intermediate region 132 and the nasal tip region 134 can be composed of a body-centered cubic lattice structure. In still other embodiments, the single crystal units of the ischium region 130, the intermediate region 132, and the nasal tip region 134 can be different from each other.

[0055] In the following description, various measurements and evaluations will be performed on the 3D printed bicycle seat of this disclosure. The features and effects of this disclosure will be described in more detail below with reference to Experimental Examples 1 and 2.

[0056] <Experimental Example 1: Diameter of Lattice Pillars in 3D Printed Mesh Lattice Structure>

[0057] In this experimental example, the impact of lattice pillar diameter on the comfort and support of a 3D-printed mesh lattice structure was evaluated. Specifically, the same elastic material was used to fabricate 3D-printed mesh lattice structures for each embodiment, wherein each embodiment is a cube with a side length of 3 cm, and the lattice unit of each embodiment is a body-centered cubic lattice. The diameter parameters of the lattice pillars for each embodiment are shown in Table 1 below, where the minimum and maximum diameter values ​​are the same to indicate that the lattice pillars maintain the same diameter, and the minimum and maximum diameter values ​​are different to indicate that the diameter of the lattice pillars gradually changes from the minimum diameter to the maximum diameter.

[0058] Table 1

[0059]

[0060]

[0061] Next, uniaxial compression tests were performed on each embodiment using a material testing machine equipped with a 1 kN force sensor. Specifically, the pressure cylinder of the material testing machine compressed each embodiment at a strain rate of 5 mm / min, and the pressure was stopped when the compression displacement reached 33% of the original height (i.e., 3 cm) of each embodiment. The force sensor measured the compressive force corresponding to the compression displacement during the compression of each embodiment. The corresponding compressive stress and compressive strain could be calculated from the measurement results and the following equations (I) and (II), and a compressive stress-compressive strain curve was plotted for each embodiment. The plotted results are shown below. Figure 5 As shown.

[0062] Compressive stress (σ) = Compressive force (F) / Cross-sectional area of ​​the sample subjected to force (A) ... Equation (I)

[0063] Compressive strain (ε) = compressive displacement (Δh) / original height of sample (h0) ... Equation (II)

[0064] from Figure 5 It can be observed that the curves of each embodiment may exhibit three types of patterns, including a nearly linear elastic pattern, a plateau pattern with a nearly flat horizontal line, and a rapidly rising densification pattern. The curves of Embodiments 2 and 3 generally exhibit an elastic pattern, indicating that the compressive stress steadily increases with the increase of compressive strain. This shows that if the diameter of the lattice pillars has a gradient change and the difference between the maximum and minimum diameters is less than or equal to 0.5 mm, the 3D printed mesh lattice structure can provide corresponding support force and have a buffering effect during compressive deformation, thus improving comfort. Compared with Embodiment 2, Embodiment 3 can provide greater support force under the same compressive strain, thus reflecting a greater compressive stress.

[0065] Although the curve in Example 4 exhibits an elastic state when the compressive strain is less than 0.2, it rapidly enters a densification state after the compressive strain exceeds 0.2. This indicates that after the compressive strain exceeds the critical value, a small amount of compressive displacement corresponds to a significant increase in compressive force. Therefore, if the difference between the maximum and minimum diameters of the lattice pillars is greater than 0.5 mm, the 3D printed mesh lattice structure is prone to upper collapse, leaving the more rigid lower part to bear the pressure, causing discomfort.

[0066] The curves in Examples 1 and 5 mostly exhibit a plateau pattern, and the compressive stress corresponding to the curves is very small, indicating that they can only withstand small compressive forces, and a slight increase in compressive force corresponds to a large change in compressive displacement. This shows that if the diameter of the lattice pillars remains consistent and is less than or equal to 1 mm, the 3D printed mesh lattice structure has low support and is prone to collapse.

[0067] The curves in Examples 6 and 7 exhibit an elastic state at low compressive strain but with high corresponding compressive stress, and enter a densification state at high compressive strain, indicating that a large stress is required to achieve the specified compressive displacement. This suggests that if the diameter of the lattice pillars remains consistent and is greater than 1 mm, the rigidity of the 3D printed mesh lattice structure is high and can easily cause discomfort.

[0068] <Experimental Example 2: Lattice Density of 3D Printed Bicycle Seat>

[0069] In this experimental example, the impact of lattice density in different functional areas of a 3D-printed bicycle saddle on comfort and support was evaluated. Specifically, the elastic pad of the 3D-printed bicycle saddle was prepared using the lattice pillar diameter parameters of Example 3 in Experiment 1. The elastic pad includes an ischial region with a lattice density of 22.04 lattice points / cm³, a central region with a lattice density of 18.55 lattice points / cm³, and a nose region with a lattice density of 21.62 lattice points / cm³. The lattice units of the three regions of the elastic pad are body-centered cubic lattices.

[0070] Next, the elastic pad was placed on a fixed mold based on the base shell, and a material testing machine equipped with a 1 kN force sensor was used to perform a uniaxial compression test on the elastic pad. Specifically, the pressure cylinder of the material testing machine compressed the elastic pad at a strain rate of 150 mm / min to the ischial, mid-section, and nasal regions, respectively, and stopped applying pressure when the compression displacement reached approximately 4.4 mm. The force sensor measured the compressive force corresponding to the compression displacement during the compression in the three regions. The measurement results were used to plot the compressive force-displacement curves for the three regions, as shown in the figure. Figure 6 As shown in Table 2 below, by repeating the uniaxial compression test, multiple measurement results can be obtained when the compression displacement is 4 mm, and the elastic force results can be calculated.

[0071] Table 2

[0072] Nose area Middle area Ischial region Average compressive force (N) 116.5 107.6 158.4 Standard deviation of compressive force 9.5 7.7 14.1 Compression force 3 times standard deviation 28.5 23.1 42.3

[0073] from Figure 6As shown in Table 2, the compressive force in the ischium region, middle region, and nasal tip region increases with the increase of compression displacement. Furthermore, at a compression displacement of 4 mm, the compressive force in the ischium region is greater than that in the middle and nasal tip regions. This indicates that the ischium region, with its higher lattice density, can exhibit greater elasticity, thus enhancing its support, while the middle and nasal tip regions, with their lower lattice density, can provide less elasticity and a softer feel.

[0074] According to the above embodiments, the 3D printed bicycle saddle of this disclosure includes a base shell and an elastic pad disposed on the base shell. The 3D printed mesh lattice structure of the elastic pad includes multiple lattice pillars, wherein the lattice pillars have a gradient increasing diameter change in the longitudinal direction from the top surface to the bottom surface of the elastic pad, and the difference between the maximum and minimum diameters of the lattice pillars is less than or equal to 0.5 mm, so that the elastic pad has both a soft touch and high elasticity, thus improving the comfort and support of the 3D printed bicycle saddle. The elastic pad can be divided into a ischial region, a middle region, and a nose region in the transverse direction according to their functions, and the different lattice densities of the three regions can further improve the corresponding comfort or support of the functional areas.

[0075] The foregoing outlines features of some embodiments to enable those skilled in the art to better understand the ideas presented in this disclosure. Those skilled in the art should understand that they can readily use this disclosure as a basis for designing or modifying other processes and structures to achieve the same purpose and / or the same advantages as the embodiments described herein. Those skilled in the art should also understand that such equivalent constructions do not depart from the spirit and scope of this disclosure, and that various changes, substitutions, and modifications can be made without departing from the spirit and scope of this disclosure.

Claims

1. A three-dimensional printed bicycle seat, characterized in that, include: One bottom shell; as well as An elastic pad is disposed on the bottom shell, wherein the elastic pad has a bottom surface facing the bottom shell and a top surface opposite the bottom surface. The elastic pad has a three-dimensional printed mesh lattice structure, which includes a plurality of lattice pillars. The diameter of each of the plurality of lattice pillars increases in a gradient from the top surface of the elastic pad toward the bottom surface, and the difference between the maximum diameter and the minimum diameter of each of the plurality of lattice pillars is less than or equal to 0.5 mm.

2. The three-dimensional printed bicycle seat as described in claim 1, characterized in that, The 3D printed mesh lattice structure includes: Ischial region; One nasal area; and An intermediate region located between the nasal tip region and the ischium region, characterized in that the lattice density of the ischium region is greater than the lattice density of the intermediate region and the lattice density of the nasal tip region.

3. The three-dimensional printed bicycle seat as described in claim 2, characterized in that, The lattice density of the intermediate region is less than that of the nose region.

4. The three-dimensional printed bicycle seat as described in claim 2, characterized in that, The ischium region, the intermediate region, and the nasal tip region each have a single crystal lattice unit, and the single crystal lattice unit of the ischium region is different from the single crystal lattice unit of the intermediate region and the single crystal lattice unit of the nasal tip region.

5. The three-dimensional printed bicycle seat as described in claim 2, characterized in that, The ischial region, the intermediate region, and the nasal region all share the same single crystal lattice unit.

6. The three-dimensional printed bicycle seat as described in claim 2, characterized in that, The maximum diameter of each of the plurality of lattice pillars in the ischial region is greater than or equal to the maximum diameter of each of the plurality of lattice pillars in the intermediate region and the maximum diameter of each of the plurality of lattice pillars in the nasal region.

7. The three-dimensional printed bicycle seat as described in claim 2, characterized in that, The plurality of lattice pillars in the ischial region, the intermediate region, and the nasal region are interconnected.

8. The three-dimensional printed bicycle seat as described in claim 1, characterized in that, The minimum diameter of each of the plurality of lattice pillars is greater than or equal to 0.8 mm.

9. The three-dimensional printed bicycle seat as described in claim 1, characterized in that, The thickness between the bottom surface and the top surface of the elastic pad is greater than or equal to 1 cm.

10. The three-dimensional printed bicycle seat as described in claim 1, characterized in that, The lattice units of the three-dimensional printed mesh lattice structure are selected from a group consisting of body-centered cubic lattices, face-centered cubic lattices, fluorite lattices, octave rack lattices, Voronoi lattices, and spiral lattices.

Images