Simulation doll

Abstract

A simulation doll comprises a framework, the framework comprises an upper main body and a lower main body, and the upper main body is movably connected with the lower main body through a first middle shaft. The upper portion of the upper body is in staggered connection with the lower portion of the upper body through a first connecting portion, and the upper portion of the lower body is in staggered connection with the lower portion of the lower body through a second connecting portion. On a projection plane in the vertical direction of the framework, the projection of the upper part of the upper main body and the projection of the lower part of the upper main body are not overlapped or partially overlapped, and the projection of the upper part of the lower main body and the projection of the lower part of the lower main body are not overlapped or partially overlapped. Through the staggered structure of the upper main body and the staggered structure of the lower main body, the appearance characteristics of the simulation doll can be highlighted after the skeleton covers the skin, and the simulation doll can have the appearance characteristics of an S-shaped curve.

Description

Technical Field

[0001] The utility model relates to the field of toys, and particularly to a simulation doll. Background Art

[0002] With the development of the 3D animation film and television and game industries, as well as the promotion and evolution of the metaverse concept, various small and life-sized dolls of virtual characters corresponding to them have become more and more popular. Most of the current related products are small hard dolls made by casting with hard materials or 3D printing, which can no longer meet the requirements of users for high simulation of the form, dynamics and texture of related products.

[0003] The patent document with the authorization announcement number CN218187855U discloses an anime figure, which specifically discloses that: the outside of the chest skeleton is wrapped with a first soft rubber layer, and the outside of the hip bone skeleton is wrapped with a second soft rubber layer; the outside of the abdominal skeleton is covered with a plastic layer; the top of the first soft rubber layer is matched with the head connecting piece, both sides of the first soft rubber layer are matched with the hand connecting pieces, the bottom of the first soft rubber layer is matched with the top of the plastic layer, the bottom of the plastic layer is matched with the second soft rubber layer, and the bottom of the second soft rubber layer is also matched with the leg connecting piece.

[0004] The above patent document can solve the technical problems that the joint range of motion of the figure is insufficient and can only rotate in a single forward and backward direction, and these joints are easily damaged after multiple rotations. However, there are still the following problems: the surfaces of the chest skeleton and the hip bone skeleton are flat, which means that when injecting glue, in order to highlight the external characteristics of the figure, a large amount of silicone needs to be injected at specific positions to support that position, so that the external shape of the figure is more characteristic. This situation will result in an unclear effect presented by the figure after injecting glue and cannot highlight the external characteristics of the figure. Therefore, it is necessary to improve it. Summary of the Utility Model

[0005] Aiming at the above problems existing in the prior art, the purpose of the utility model is to provide a simulation doll, which can make the external shape of the simulation doll more characteristic and enable the simulation doll to have the external shape feature of an "S" curve.

[0006] In order to achieve the above purpose, the technical solution of the utility model is:

[0007] A simulation doll, comprising a skeleton, the skeleton including an upper body and a lower body, the upper body being movably connected to the lower body through a central axis; the upper part of the upper body is misaligned and connected to the lower part of the upper body through a first connecting part, and the upper part of the lower body is misaligned and connected to the lower part of the lower body through a second connecting part; on the projection plane in the vertical direction of the skeleton, the projection of the upper part of the upper body and the projection of the lower part of the upper body do not overlap or partially overlap, and the projection of the upper part of the lower body and the projection of the lower part of the lower body do not overlap or partially overlap.

[0008] Further, a first transition part is arranged between the two ends of the first connecting part, and on the projection plane on the side of the skeleton, the first transition part is arc-shaped or square.

[0009] Further, on the projection plane on the side of the skeleton, the two ends of the first connecting part and the two ends of the first transition part are arranged at an angle.

[0010] Further, a second transition part is arranged between the two ends of the second connecting part, and on the projection plane on the side of the skeleton, the second transition part is arc-shaped or square.

[0011] Further, on the projection plane on the side of the skeleton, the two ends of the second connecting part and the two ends of the second transition part are arranged at an angle.

[0012] Further, the skeleton further includes a head body, two hand bodies and two foot bodies; the head body is movably connected to the upper end of the upper body; the two hand bodies are respectively movably connected to the left and right opposite sides of the upper body; the two foot bodies are respectively movably connected to the lower ends of the lower body, and the two foot bodies are arranged left and right relatively.

[0013] Further, the hand body is arc-shaped.

[0014] Further, the hand body includes an upper arm and a lower arm, one end of the upper arm is movably connected to one side of the upper body, and the other end of the upper arm is movably connected to one end of the lower arm.

[0015] Further, the foot body is arc-shaped.

[0016] Further, the foot body includes a thigh and a calf, one end of the thigh is movably connected to the lower end of the lower body, and the other end of the thigh is movably connected to one end of the calf.

[0017] Further, it further includes an epidermis, and one side of the epidermis wraps the skeleton.

[0018] Further, the epidermis includes an inner skin and an outer skin; one side of the inner skin wraps the framework, and one side of the outer skin wraps the other side of the inner skin.

[0019] Further, perforations are provided on the upper main body, the lower main body, the hand main body, and the foot main body, and one side of the inner skin fills the perforations.

[0020] The beneficial effects of the present utility model are as follows:

[0021] By connecting the upper part and the lower part of the upper main body in a staggered manner, and connecting the upper part and the lower part of the lower main body in a staggered manner. When injecting glue, the glue can make the shape of the simulation doll more characteristic through the design of this staggered structure, enabling the simulation doll to have the external shape feature of an "S" - shaped curve. Description of the Drawings

[0022] Figure 1 is the schematic plan view of the first embodiment of the present utility model;

[0023] Figure 2 is Figure 1 the side view schematic of the upper main body and the lower main body in

[0024] Figure 3 is Figure 1 the schematic plan view after covering with the epidermis;

[0025] Figure 4 is the side view schematic of the upper main body and the lower main body in the second embodiment of the present utility model.

[0026] Reference Signs

[0027] 1. Framework; 2. Upper main body; 21. First connecting part; 211. First transition part; 2111. First left wall; 2112. First right wall; 3. Lower main body; 31. Second connecting part; 311. Second transition part; 3111. Second left wall; 3112. Second right wall; 4. First central axis; 5. Head main body; 6. Second central axis; 7. Hand main body; 71. Upper arm; 72. Lower arm; 73. First joint connection structure; 8. Foot main body; 81. Thigh; 82. Calf; 83. Second joint connection structure; 9. Epidermis; 10. Perforation. Detailed Embodiments

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top surface", "bottom surface", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the indicated position or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0029] In addition, terms such as "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise specifically defined.

[0030] In the present utility model, unless otherwise clearly specified and defined, terms such as "assembled", "connected", and "joined" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may also be a mechanical connection; it may be directly connected or connected through an intermediate medium, and it may be internally connected and communicated between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] The following further elaborates on the utility model in conjunction with the drawings and specific embodiments. The following description is only exemplary and does not limit the protection scope of the utility model.

[0032] Please refer to Figures 1 - 3 , a simulation doll, comprising a skeleton 1. The skeleton 1 includes an upper body 2 and a lower body 3. The upper body 2 is movably connected to the lower body 3 through a first central axis 4. The upper part of the upper body 2 is misaligned and connected to the lower part of the upper body 2 through a first connecting portion 21, and the upper part of the lower body 3 is misaligned and connected to the lower part of the lower body 3 through a second connecting portion 31. On the projection plane in the vertical direction of the skeleton 1, the projection of the upper part of the upper body 2 and the projection of the lower part of the upper body 2 do not overlap or partially overlap, and the projection of the upper part of the lower body 3 and the projection of the lower part of the lower body 3 do not overlap or partially overlap.

[0033] In this embodiment, a first transition portion 211 is provided between the two ends of the first connecting portion 21. Please refer to Figure 2, on the projection plane on the side of the skeleton 1, there are parallel reference lines L1, reference line L2, reference line L3, and reference line L4, and the reference lines L1, L2, L3, and L4 intersect the upper main body 2 respectively. Among them, the area between the reference line L1 and the upper end of the upper main body 2 is defined as the upper part of the upper main body 2, and the area between the reference line L4 and the lower end of the upper main body 2 is defined as the lower part of the upper main body 2.

[0034] The area between the reference line L1 and the reference line L4 is defined as the first connecting part 21. Further, the area between the reference line L1 and the reference line L2 is defined as the first end of the first connecting part 21, the area between the reference line L2 and the reference line L3 is defined as the first transition part 211, and the area between the reference line L3 and the reference line L4 is defined as the second end of the first connecting part 21.

[0035] In this embodiment, the first transition part 211 is bent leftward in an arc shape, and the first end of the first connecting part 21 and the first end of the first transition part 211 are arranged at an angle, and the range of the angle is between 90° and 180°, which is not limited here. Similarly, the second end of the first connecting part 21 and the second end of the first transition part 211 are also arranged at an angle, and the range of the angle is between 90° and 180°, which is not limited here.

[0036] Specifically, on the projection plane on the side of the skeleton 1, the first transition part 211 includes a first left wall 2111 and a first right wall 2112. The first left wall 2111 is bent leftward in an arc shape, and the first right wall 2112 is in a stepped shape with two inflection points (as Figure 2 shown, the two inflection points determine that the first right wall 2112 is bent leftward), so the upper part of the upper main body 2 is located on the right side of the lower part of the upper main body 2 on the projection plane on the side of the skeleton 1.

[0037] In this embodiment, a second transition part 311 is provided between the two ends of the second connecting part 31. Please refer to Figure 2 , on the projection plane on the side of the skeleton 1, there are parallel reference lines L5, reference line L6, reference line L7, and reference line L8, and the reference lines L5, L6, L7, and L8 intersect the lower main body 3 respectively. Among them, the area between the reference line L5 and the upper end of the lower main body 3 is defined as the upper part of the lower main body 3, and the area between the reference line L8 and the lower end of the lower main body 3 is defined as the lower part of the lower main body 3.

[0038] The area between the reference line L5 and the reference line L8 is defined as the second connecting part 31. Further, the area between the reference line L5 and the reference line L6 is defined as the first end of the second connecting part 31, the area between the reference line L6 and the reference line L7 is defined as the second transition part 311, and the area between the reference line L7 and the reference line L8 is defined as the second end of the second connecting part 31.

[0039] In this embodiment, the second transition portion 311 is bent rightward in an arc shape, and the first end of the second connecting portion 31 and the first end of the second transition portion 311 are arranged at an angle, and the range of the angle is between 90° and 180°, which is not limited herein. Similarly, the second end of the second connecting portion 31 and the second end of the second transition portion 311 are also arranged at an angle, and the range of the angle is between 90° and 180°, which is not limited herein.

[0040] Specifically, on the projection plane of the side surface of the framework 1, the second transition portion 311 includes a second left wall 3111 and a second right wall 3112. The second left wall 3111 is in a stepped shape with two inflection points (as Figure 2 shown, the two inflection points determine the rightward bending of the second left wall 3111), and the first right wall 2112 is bent rightward in an arc shape. Therefore, the upper part of the lower body 3 is located on the left side of the lower part of the lower body 3 on the projection plane of the side surface of the framework 1.

[0041] Specifically, in this embodiment, the lower part of the upper body 2 and the upper part of the lower body 3 are located in the same vertical plane.

[0042] In this embodiment, the upper body 2 includes a first sub-body (not marked in the figure) and a second sub-body (not marked in the figure), and the first sub-body and the second sub-body are connected by rivets. When the first sub-body and the second sub-body are connected, the bottom surfaces of the first sub-body and the second sub-body are joined to form a first spherical groove (not marked in the figure), the top surfaces of the first sub-body and the second sub-body are joined to form a second spherical groove (not marked in the figure), and the left and right opposite side surfaces of the first sub-body and the left and right opposite side surfaces of the second sub-body are joined to form a third spherical groove (not marked in the figure).

[0043] In this embodiment, the lower body 3 includes a third sub-body (not marked in the figure) and a fourth sub-body (not marked in the figure), and the third sub-body and the fourth sub-body are connected by rivets. When the third sub-body and the fourth sub-body are connected, the top surfaces of the third sub-body and the fourth sub-body are joined to form a fourth spherical groove (not marked in the figure), and the left and right opposite side surfaces at the lower end of the fourth sub-body and the left and right opposite side surfaces at the lower end of the second sub-body are joined to form a fifth spherical groove (not marked in the figure).

[0044] In this embodiment, first spherical balls and second spherical balls (not marked in the figure) are respectively arranged at two ends of the first central axis 4. The diameter of the first spherical ball is smaller than the diameter of the first spherical groove, and the diameter of the second spherical ball is smaller than the diameter of the fourth spherical groove. Moreover, the size of the opening of the first spherical groove is smaller than the size of the first spherical ball, and the size of the opening of the fourth spherical groove is smaller than the size of the second spherical ball. The first spherical ball is arranged in the first spherical groove, and the second spherical ball is arranged in the fourth spherical groove. At this time, the structure between the first spherical ball and the first spherical groove (as well as the second spherical ball and the fourth spherical groove) is equivalent to a ball-and-socket joint. Taking the first spherical ball and the first spherical groove as an example, since the shapes of the first spherical ball and the first spherical groove are both spherical, according to the characteristics of the ball-and-socket joint, the first spherical ball can move around multiple axes in the first spherical groove. The aforementioned movements include: First, the first spherical ball can rotate around its own axis; second, the first spherical ball can swing back and forth around the horizontal axis; third, the first spherical ball can swing left and right around the vertical axis to adapt to complex movement requirements. With this structure of the ball-and-socket joint, when bearing an external load, the movement of the first spherical ball can be automatically adjusted to disperse the load and reduce stress concentration. This adjustment ability is one of the important reasons for the strong load-bearing capacity of the ball-and-socket joint. Therefore, the cooperation between the first spherical ball and the first spherical groove can provide a stable structure, can bear loads from different directions, and maintain structural stability under the action of multi-axis forces, thereby making the connection between the upper main body 2 and the lower main body 3 more flexible.

[0045] In this embodiment, the framework 1 further includes a head main body 5. The head main body 5 includes a second central axis 6. Third spherical balls (not marked in the figure) are respectively arranged at two ends of the second central axis 6. The diameter of the third spherical ball is smaller than the diameter of the second spherical groove, and the size of the opening of the second spherical groove is smaller than the size of the third spherical ball. One of the third spherical balls is arranged in the second spherical groove. At this time, the structure between the third spherical ball and the second spherical groove is equivalent to a ball-and-socket joint.

[0046] In this embodiment, the skeleton 1 further includes two hand bodies 7. The two hand bodies 7 have the same structure, are both arc-shaped, and are respectively movably connected to the opposite sides of the upper body 2. Taking one of the hand bodies 7 as an example for illustration: The hand body 7 is movably connected to the upper body 2. Specifically, the hand body 7 includes an upper arm 71 and a lower arm 72. The end of the first end of the upper arm 71 is recessed to form a first recessed structure (not marked in the figure). Further, a first joint connection structure 73 is provided. The first end of the first joint connection structure 73 is a fourth spherical ball (not marked in the figure), and the second end is a flat semi-circular surface (it can also be a triangular surface, a rectangular surface, etc., which is not limited here). The second end of the first joint connection structure 73 is hinged to the first recessed structure at the first end of the upper arm 71. And the fourth spherical ball on the first end of the first joint connection structure 73 is connected to the third spherical groove, and this connection relationship is equivalent to a ball-and-socket joint, so that the upper arm 71 can be movably arranged in the upper body 2.

[0047] Further, the end of the second end of the upper arm 71 is recessed to form a second recessed structure (not marked in the figure). The end of the first end of the lower arm 72 is a flat semi-circular surface (it can also be a triangular surface, a rectangular surface, etc., which is not limited here), and the end of the second end of the lower arm 72 is a sphere. The first end and the second end of the lower arm 72 are designed with an arc transition that is wider at the top and narrower at the bottom. By hinging the first end of the lower arm 72 to the second recessed structure at the second end of the upper arm 71, the lower arm 72 can be connected to the upper arm 71, and the lower arm 72 can swing relative to the upper arm 71.

[0048] In this embodiment, the skeleton 1 further includes two foot bodies 8. The two foot bodies 8 have the same structure, are both arc-shaped, and are respectively movably connected to the lower ends of the lower body 3, and the two foot bodies 8 are arranged opposite to each other left and right. Taking one of the foot bodies 8 as an example for illustration: The foot body 8 is movably connected to the lower body 3. Specifically, the foot body 8 includes a thigh 81 and a calf 82. The end of the first end of the thigh 81 is recessed to form a third recessed structure (not marked in the figure). Further, a second joint connection structure 83 is provided. The first end of the second joint connection structure 83 is a fifth spherical ball (not marked in the figure), and the second end is a flat semi-circular surface (it can also be a triangular surface, a rectangular surface, etc., which is not limited here). The second end of the second joint connection structure 83 is hinged to the third recessed structure at the first end of the thigh 81. A fifth spherical groove (not marked in the figure) is provided on the left (or right) side of the lower end of the lower body 3. By connecting the fifth spherical ball on the first end of the second joint connection structure 83 to the fifth spherical groove, the thigh 81 can be movably arranged in the lower body 3, and this connection relationship is equivalent to a ball-and-socket joint.

[0049] The end of the second end of the thigh 81 is concavely formed with a fourth concave structure (not marked in the figure). Specifically, the diameter of the first end of the thigh 81 is larger than the diameter of the second end of the thigh 81, and the diameter ratio between the first end and the second end is at least 2:1. This is only an example, and this embodiment is not limited thereto. The end of the first end of the calf 82 is a flat semi-circular surface (it can also be a triangular surface, a rectangular surface, etc., which is not limited here). The end of the second end of the calf 82 is a sphere, and an arc transition design with a wider upper part and a narrower lower part is adopted between the first end and the second end of the calf 82. By hinging the first end of the calf 82 with the fourth concave structure of the second end of the thigh 81, the calf 82 can be connected to the thigh 81, and the calf 82 can swing relative to the thigh 81.

[0050] Please refer to Figure 4 , in this embodiment, it further includes an epidermis 9. The epidermis 9 is a hardware layer or a plastic layer, and it can also be a silica gel layer. One side of the epidermis 9 wraps the entire skeleton 1. Specifically, the epidermis 9 includes an inner skin and an outer skin (both the inner skin and the outer skin are not marked in the figure). The bottom surface of the inner skin wraps the entire skeleton 1, and the bottom surface of the outer skin covers the top surface of the inner skin. Further, perforations 10 are provided on the upper main body 2, the lower main body 3, the hand main body 7, and the foot main body 8. When injecting glue, the liquid inner skin can flow into and fill the entire perforation 10, and an integrated mechanism is formed on both sides of the perforation 10, which is equivalent to "locking" the skeleton 1 and the inner skin together. This structure can evenly distribute external forces, reduce stress concentration, and greatly enhance the mechanical bonding force between them.

[0051] The working principle of the present utility model will be introduced below for better understanding of the present utility model:

[0052] By injecting glue into the skeleton 1 twice to form the inner skin and the outer skin, the inner skin covers the skeleton 1 and fills the perforations 10 provided on the upper main body 2, the lower main body 3, the hand main body 7, and the foot main body 8, so that the inner skin "locks" the above components. Even if the inner skin deforms or is subjected to external forces after curing, there is still a stronger adhesion force between the inner skin and the skeleton 1, reducing the possibility of detachment. On the other hand, on the projection plane of the side of the skeleton 1, the upper part and the lower part of the upper main body 2 are arranged in a staggered manner. The upper part of the upper main body 2 is on the right, and the lower part of the upper main body 2 is on the left. The upper part and the lower part of the lower main body 3 are also arranged in a staggered manner. The upper part of the lower main body 3 is on the left, and the lower part of the lower main body 3 is on the right. When the inner skin covers the upper main body 2, under the protrusion of the upper part and the lower part of the upper main body 2, the inner skin will also protrude outward along the shape of the upper part and the lower part of the upper main body 2. The same is true for the lower main body 3, so that the simulation doll has more shape characteristics.

[0053] In the present utility model, the upper and lower parts of the upper main body 2 are connected in a staggered manner, and the upper and lower parts of the lower main body 3 are also connected in a staggered manner. And in the initial state, the lower part of the upper main body 2 and the upper part of the lower main body 3 are located on the same vertical plane. Taking a male simulation doll as an example, the upper part of the upper main body 2 corresponds to the back of the simulation doll, the lower part of the upper main body 2 and the upper part of the lower main body 3 correspond to the abdomen of the simulation doll, and the lower part of the lower main body 3 corresponds to the buttocks of the simulation doll. When these positions bulge outwards, the overall simulation doll will present an "S"-shaped appearance feature, making the simulation doll more playable and realistic.

[0054] Please refer to Figure 3 , the present utility model also has a second embodiment. The difference between the second embodiment and the first embodiment lies in that the shapes of the first transition part 211 and the second transition part 311 are changed. Specifically:

[0055] In this embodiment, the first transition part 211 and the second transition part 311 are square. Specifically, please refer to Figure 3 , the inflection points on the first left wall 2111 and the second left wall 3111 are both bent at 90°, and the inflection points on the second left wall 3111 and the second right wall 3112 are also bent at 90°. Of course, the above angles can also be other values, which are not limited here.

[0056] The present utility model is not limited to the above embodiments. If various modifications or deformations of the present utility model do not depart from the spirit and scope of the present utility model, and if these modifications and deformations fall within the scope of the claims of the present utility model and equivalent technical scope, then the present utility model also intends to include these modifications and deformations.

Claims

1. A simulation doll, characterized in that, Comprising: A framework, the framework including an upper main body and a lower main body, the upper main body being movably connected to the lower main body through a first central axis; The upper part of the upper main body is misaligned and connected to the lower part of the upper main body through a first connecting portion, and the upper part of the lower main body is misaligned and connected to the lower part of the lower main body through a second connecting portion; On the projection plane in the vertical direction of the framework, the projection of the upper part of the upper main body and the projection of the lower part of the upper main body do not overlap or partially overlap, and the projection of the upper part of the lower main body and the projection of the lower part of the lower main body do not overlap or partially overlap.

2. The simulation doll according to claim 1, wherein: A first transition portion is provided between the two ends of the first connecting portion, and on the projection plane of the side surface of the framework, the first transition portion is arc-shaped or square.

3. The simulation doll according to claim 2, wherein: On the projection plane of the side surface of the framework, the two ends of the first connecting portion and the two ends of the first transition portion are arranged at an angle.

4. The simulation doll according to claim 1, wherein: A second transition portion is provided between the two ends of the second connecting portion, and on the projection plane of the side surface of the framework, the second transition portion is arc-shaped or square.

5. The simulation doll according to claim 4, wherein: On the projection plane of the side surface of the framework, the two ends of the second connecting portion and the two ends of the second transition portion are arranged at an angle.

6. The simulation doll according to claim 1, wherein: The framework further includes a head main body, two hand main bodies and two foot main bodies; The head main body is movably connected to the upper end of the upper main body; The two hand main bodies are respectively movably connected to the left and right opposite sides of the upper main body; The two foot main bodies are respectively movably connected to the lower end of the lower main body, and the two foot main bodies are arranged left and right relatively.

7. The simulation doll according to claim 6, wherein: The hand main body is arc-shaped.

8. The simulation doll according to claim 6, wherein: The hand main body includes an upper arm and a lower arm, one end of the upper arm is movably connected to one side of the upper main body, and the other end of the upper arm is movably connected to one end of the lower arm.

9. The simulation doll according to claim 6, wherein: The foot main body is arc-shaped.

10. The simulation doll according to claim 6, wherein: The foot main body includes a thigh and a calf, one end of the thigh is movably connected to the lower end of the lower main body, and the other end of the thigh is movably connected to one end of the calf.

11. The simulation doll according to claim 6, wherein: It further includes an epidermis, and one side of the epidermis wraps the framework.

12. The simulation doll according to claim 11, wherein: The epidermis includes an inner epidermis and an outer epidermis; One side of the inner epidermis wraps the framework, and one side of the outer epidermis wraps the other side of the inner epidermis.

13. The simulation doll according to claim 12, wherein: Perforations are provided on the upper main body, the lower main body, the hand main body, and the foot main body, and one side of the endothelium fills the perforations.

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