JP7753160B2 - Doll body and joint structure - Google Patents

Description

The present invention relates to a doll body and a joint structure.

Toy dolls (doll bodies) include various joints and movable parts to allow them to move and pose like humans or animals. However, providing a toy doll with the same number of joints as a human would require a large number of parts, and even in sophisticated dolls, the number is limited, making this difficult to achieve. Therefore, in order to achieve the movements and poses described above, it is important to use fewer joints and parts while expanding the range of motion of the joints and the parts connected to them and allowing for natural movements. Patent Document 1 proposes a doll body in which connecting members connected to the hip joints rotate between open and closed positions, and the legs are connected to the tips of the connecting members. With this doll body, it is possible to achieve leg-opening and leg-closing movements.

JP 2009-34232 A

Although the connecting member can rotate between open and closed positions, it only moves in one direction. To achieve natural movement like that of human limbs, it is desirable for the hip joints to be able to rotate in various directions. Meanwhile, by installing the hip joints inside the waist, just like in humans, it is possible to achieve natural-looking legs connected to them, but the movement space is limited. In other words, it is necessary to allow the legs to rotate more freely within the space limited by their relationship with other members such as the waist and skirt. For example, even if a spherical connecting member is used for the hip joint and the legs are connected to it in a rotatable manner, the range of motion of the connecting member itself will be limited by the waist of the doll body, etc., making it difficult to achieve realistic human-like movement such as raising the legs nearly 180 degrees.

The present invention provides a mechanism that allows for a greater variety of poses, for example, in doll bodies.

The present invention is characterized in that it is a doll body, for example, comprising a first connecting member having a spherical connecting portion at one end, a first part forming a recess into which the spherical connecting portion is rotatably fitted, and a second part rotatably connected to the other end of the first connecting member.
The present invention also provides, for example, a doll body comprising a first connecting member having a spherical connecting portion at one end and a gripping portion at the other end, a first part forming a recess into which the spherical connecting portion is rotatably fitted, and a second part rotatably connected to the gripping portion of the first connecting member, wherein the gripping portion grips the second part with a first claw portion and a second claw portion longer than the first claw portion.

Furthermore, the present invention is characterized in that, for example, a joint structure of a doll body includes a waist part and leg parts, and a connecting member having one end rotatably connected to the waist part and the other end to which the leg part is rotatably connected, and the space between one end and the other end of the connecting member is formed to have a predetermined length that ensures a range of motion so that the connecting member rotates around the one end relative to the waist part, and when the leg part rotates around the other end, the leg part can rotate to a position close to the upper body of the doll body.
The present invention also provides, for example, a joint structure for a doll body, comprising a first connecting member having a spherical connecting portion at one end and a gripping portion at the other end, a first part forming a recess into which the spherical connecting portion is rotatably fitted, and a second part rotatably connected to the gripping portion of the first connecting member, wherein the gripping portion grips the second part with a first claw portion and a second claw portion longer than the first claw portion.

This invention allows for a greater variety of poses to be achieved with the doll body.

FIG. 2 is a diagram showing an example of the front appearance of a doll body according to an embodiment. 1A and 1B are a front view and a side view, respectively, of the lower body of a doll body according to one embodiment. FIG. 2 is an exploded view of the lower body of a doll body according to one embodiment. FIG. 2 is a side cross-sectional view of a leg of a doll body according to one embodiment. FIG. 10 is a side cross-sectional view showing the movement of a hip joint of a doll body according to one embodiment. FIG. 10 is a side cross-sectional view showing the movement of the knee joint of a doll body according to one embodiment. 10A to 10C are diagrams showing examples of posing movements of a doll body according to an embodiment.

The following embodiments are described in detail with reference to the accompanying drawings. Note that the following embodiments do not limit the scope of the claimed invention, and not all combinations of features described in the embodiments are necessarily essential to the invention. Two or more of the features described in the embodiments may be combined in any desired manner. Furthermore, identical or similar components are designated by the same reference numerals, and redundant descriptions will be omitted.

<Appearance of the doll body>
First, an example of the external configuration of a doll body 100 according to this embodiment will be described with reference to Fig. 1. Fig. 1 shows the external front view of the doll body 100. Note that up/down, left/right, and front/back arrows indicate the orientation of the doll body in the figure, and this also applies to other figures.

The doll body (also referred to as a doll-type toy or model) 100 comprises a head 101, a chest 102, arms 103a and 103b, an abdomen 104, a waist (waist part) 105, and legs (leg parts) 107a and 107b. The doll body 100 is a movable doll body such as a movable figure, and each part can be moved within a limited range created by its relationship with other members. The head 101 is connected to the chest 102. The arms 103, including a right arm 103a and a left arm 103b, are further connected to the chest 102 by spherical connecting parts (hereinafter also referred to as ball joints), and the abdomen 104 is connected at the bottom. The waist (first part) 105 is connected to the abdomen 104. The legs 107, including a right leg 107a and a left leg 107b, are connected to the waist 105 by spherical connecting parts. Reference numeral 106 denotes the lower body (lower body part) of the doll body 100, including the waist 105 and legs 107. Below, the hip joints, which are the joints between the waist 105 and legs 107 in the lower body 106, and the knee joints of the legs 107 will be described in detail.

<Lower body structure>
Next, the configuration of the waist 105 and legs 107 in the lower body 106 of the doll body 100 according to this embodiment will be described with reference to Figure 2. Figure 2(a) is a front view showing a portion of the lower body 106. Figure 2(b) is a side view showing a portion of the lower body 106. The legs 107a, 107b have similar configurations and similar connection configurations to the waist 105, so in the following description, the letters a, b indicating left and right will be omitted.

The leg 107 is composed of an upper leg (second part) 202 and a lower leg (third part) 203, and is connected to the waist 105 by a spherical connecting part 201 (ball joint). That is, the hip joint in this embodiment movably connects the leg 107 to the waist 105 via a ball joint. This allows the leg 107 to rotate in all directions relative to the waist 105 within the range of interference from other parts, enabling a variety of movements to be achieved. Note that, as shown in Figure 2, connecting parts 201a and 201b are connected to the respective recesses of the waist 105 with almost no gaps. By eliminating gaps in the joints in this way, the sense of discomfort caused by gaps can be reduced and realistic human joints can be reproduced.

The upper leg 202 and lower leg 203 of the leg 107 are connected by a knee joint. A ring-shaped rotating part 204 is provided at the knee joint, and the lower leg 203 can rotate around an axis (rod) that passes through a hole in the ring-shaped rotating part 204. As shown in FIG. 2(a), the rotating parts 204a and 204b of the left and right legs 107a and 107b are assembled so that the center lines (dotted lines) of the rotating parts have a predetermined inclination 205 from the center line (dashed line) connecting the upper leg 202 and lower leg 203. In other words, the rotating parts 204 are not provided along or parallel to the center line of the leg 107, but are formed in a state where they are shifted (twisted) from the center line. This allows the doll body 100 to move from a seiza position to a sitting position where both legs 107a, 107b are spread outward and the buttocks are placed on the ground (also known as a "girl's sitting position," "flat sitting position," or "duck sitting position"). Details will be explained later using Figure 7.

<Lower body assembly configuration>
Next, the detailed configuration of the lower body of the doll body 100 according to this embodiment will be described with reference to Figures 3 and 4. Figure 3 shows an exploded view of a portion of the lower body according to this embodiment. Figure 4 shows a cross-sectional view of the lower body of the doll body 100 according to this embodiment. Here, the structure including the waist 105 and left leg 107b as part of the lower body of the doll body 100 will be described. Note that the right leg 107a has the same configuration as the left leg 107b, so its description will be omitted.

The waist portion 105 is composed of parts 301 and 312. Part 301 is formed with a recess 311 for receiving a connecting member (first connecting member) 302 that is connected to each leg portion 107. Connecting member 302 is formed with a connecting portion 201 and a grip portion 322. Connecting portion 201 is formed in a spherical shape and is rotatably fitted into recess 311 formed in part 301. This allows connecting member 302 to rotate in all directions relative to waist portion 105 within the range of interference from other parts. Therefore, upper leg portion 202, which is connected to grip portion 322 of connecting member 302, also moves in accordance with the rotation of connecting member 302 in all directions.

The upper leg 202 is composed of parts 303 and 304. Part 303 is composed of a rod member 331 that fits into the grip portion 322 of the connecting member 302. By fitting the rod member 331 into the grip portion 322, it functions as a rotation axis. Part 303 is also connected to part 304, which is connected to the connecting member 305. Therefore, the upper leg 202 is connected to the connecting member 302 so that it can rotate around the rod member 331 as the rotation axis. The rotation direction is approximately the same as the up-and-down direction of the doll body 100. Note that the grip portion 322 is not limited to any particular structure as long as it is capable of rotatably holding the rod member 331, and it may be, for example, a ring-shaped holding portion.

The connecting member (second connecting member) 305 is a part that connects the upper leg portion 202 and the lower leg portion 203 to realize a knee joint, and is composed of a ring-shaped rotating part 204. As described above, the rotating part 204 is formed in a ring shape, and the shaft member that passes through its hole functions as the rotation axis, and the connecting member 305 itself rotates by bending around the rotating part 204. Therefore, the part 304 of the upper leg portion 202 and the part 306 of the lower leg portion 203, which are connected to the connecting member 305, move in a bending manner, realizing the movement of the knee joint.

<Hip joint movement>
The movement of the hip joint of the doll body 100 according to this embodiment will be described below with reference to Fig. 5. Fig. 5(a) and Fig. 5(b) show side cross-sectional views of the waist 105 and upper thigh 202 of the doll body 100.

As shown in FIG. 5(a), connecting member 302 connected to part 301 of waist 105 can rotate in the direction of arrow 501 via spherical connecting portion 201. As connecting member 302 rotates, part 304, which is the upper thigh connected to connecting member 302, also rotates as shown by the dotted arrow. Note that because connecting portion 201 is spherical, connecting member 302 and the part connected to connecting member 302 can rotate in all directions, not just in the direction of arrow 501, within the limits imposed by other members. This makes it possible to realize a variety of movements, such as squeezing upper thigh 202 inward (knee-thigh movement) or opening it outward (knee-thigh movement).

Figure 5(b) shows part 304 rotated further from the state shown in Figure 5(a). As mentioned above, part 304 is connected to part 303, and rod member 331 of part 303 is rotatably fitted into grip portion 322 of connecting member 302. Therefore, parts 303 and 304 can rotate in the direction of arrow 502, with rod member 331 as the axis of rotation. This rotational movement allows part 304 to rotate further from the state shown in Figure 5(a), as indicated by the dotted arrow. Therefore, by performing a two-stage movement—the rotational movement of spherical connecting member 201 and the rotational movement of rod member 331—the upper leg 202 of doll body 100 can be rotated (approximately 180 degrees) to a position approaching the upper body parts of doll body 100, such as waist 105 and abdomen 104, as shown in Figure 5(b)—providing a wider range of motion. Furthermore, achieving such a wide range of motion allows for a variety of poses.

In order to ensure the above-mentioned range of motion, it is desirable that the distance between the connecting portion 201 formed at one end of the connecting member 302 and the grip portion 322 formed at the other end be a predetermined length that ensures the range of motion. In other words, by having the predetermined length, the extent to which part 304 is subject to interference from other components such as part 301 as the upper leg 202 rotates can be reduced, further widening the range of motion. Furthermore, as shown in FIG. 5(b), the grip portion 322 of part 302 has a curved outer shape, and even when the upper leg 202 rotates, this curved surface is exposed to the outside, preventing any gaps from forming between the grip portion 322 and part 304. As a result, even when the upper leg 202 is rotated as shown in FIG. 5(b), no gaps are created on the back side of the upper leg 202, creating a natural appearance.

<Knee joint movement>
Next, the operation of the knee joint of the doll body 100 according to this embodiment will be described with reference to Figure 6. Figures 6(a) and 6(b) show side cross-sectional views of the leg portion including the upper leg portion 202 and the lower leg portion 203 of the doll body 100.

Figure 6(a) shows the leg 107 in an extended state. Figure 6(b) shows the state in which the lower leg 203 has been rotated from the state in Figure 6(a) around the rotating part 204 of the connecting member 305 that connects the upper leg 202 and the lower leg 203. As shown in Figure 6(b), the leg 107 can be bent approximately 180 degrees by rotating the rotating part 204. In order to achieve this bending movement of the leg 107, it is necessary to minimize interference between parts 304 and 306. Therefore, according to this embodiment, as shown in the dotted frame 601 in Figure 6(a), the portion where part 306 abuts against part 304 upon rotation of the rotating part 204 is carved and formed to match the shape of part 304. By forming them in this manner, parts 304 and 306 come into close contact with each other at the position shown in the dotted frame 602 in Figure 6(b), preventing a portion of part 306 from colliding with part 304 during rotation and thereby reducing the range of motion.

<Posing>
Next, an example of a pose that can be achieved with the doll body 100 according to this embodiment will be described with reference to Fig. 7. Fig. 7(a) shows a side cross-sectional view of the waist 105 and legs 107, and Fig. 7(b) shows a front view of the waist 105 and legs 107.

Figure 7(a) shows the state in which the legs 107 are bent around the rotating parts 204 and the upper thighs 202 are rotated so as to approach the waist 105 and abdomen 104 of the doll body 100. Performing this movement with both legs can achieve movements such as sitting cross-legged (sitting with knees in the knees).

Figure 7(b) shows the state in which the leg 107 is bent around the rotating part 204, with the lower leg 203 opening outward. This is because, as explained using Figure 2, the rotating part 204 that realizes the bending motion of the leg 107 in this embodiment is formed in a state in which it is shifted (twisted) at a predetermined inclination 205 from the center line of parts 304, 306. As a result, when the legs 107a, 107b are bent, the lower leg parts 203a, 203b each open outward. Therefore, as shown in Figure 7(b), the doll body 100 can realize the movement of sitting in a split-leg position (also known as a girl's sitting position, flat sitting position, or duck sitting position), in which the lower leg parts 203a, 203b open outward and the buttocks are placed on the ground.

As explained above, the doll body according to this embodiment comprises a first connecting member (302) having a spherical connecting portion (201) at one end and a gripping portion (322) at the other end, a first part (105, 301) that forms a recess (311) into which the spherical connecting portion is rotatably fitted, and a second part (202, 304) that is rotatably connected to the gripping portion of the first connecting member. This allows the doll body to be posed in a wider variety of ways.

Furthermore, the shape of the doll body (doll-type toy, model) is not particularly limited and includes a variety of shapes such as people, animals, robots, insects, dinosaurs, and virtual life forms.

100: Doll body, 101: Head, 102: Chest, 103a, 103b: Arms, 104: Abdomen, 105: Waist, 106: Lower body, 107a, 107b: Legs

Claims (11)

A doll body,
a first connecting member having a spherical connecting portion at one end and a grip portion at the other end;
a first part that forms a recess into which the spherical connecting portion is rotatably fitted;
a second part rotatably connected to the grip portion of the first connecting member ,
The doll body is characterized in that the gripping portion grips the second part with a first claw portion and a second claw portion that is longer than the first claw portion . the second part rotates from the second claw portion to the first claw portion,
2. The doll body according to claim 1, wherein a part of the second claw is exposed and covers a gap created by the rotation of the second part. the first connecting member is made of one part,
2. The doll body according to claim 1, wherein the spherical connecting portion and the grip portion are spaced apart by a predetermined length. a rod member rotatably fitted to the grip portion is formed on the second part;
2. The doll body according to claim 1, wherein the second part is rotatable relative to the first connecting member with the rod member as a rotation axis. a second connecting member having one end connected to the second part and a ring-shaped rotating portion;
a third part connected to the other end of the second connecting member,
the second connecting member rotates from the other end of the second connecting member so as to bend around the rotating portion,
5. The doll body according to claim 4 , wherein the third part rotates to a position where it abuts against the second part in accordance with the rotation of the other end of the second connecting member. 6. The doll body according to claim 5, wherein the portion of the third part that abuts against the second part after rotating in accordance with the rotation of the other end of the second connecting member is cut to match the shape of the second part. the first part forms the waist of the doll body;
the second part forms the upper thigh of the leg of the doll body,
7. The doll body according to claim 5 , wherein the third part forms the lower leg of the doll body. 8. The doll body according to claim 7, wherein the second part is movable to a position approaching an upper body part of the doll body connected to the first part by rotating the first connecting member around the connecting part and the gripping part. the rotating portion of the second connecting member is formed so that its rotation direction is offset from the center lines of the second part and the third part,
9. The doll body according to claim 7 , wherein the split seat is operable in the doll body. 10. The doll body according to claim 1, wherein the connecting portion of the first connecting member is rotatably fitted into the recess of the first part without any gap. A joint structure of a doll body,
a first connecting member having a spherical connecting portion at one end and a grip portion at the other end;
a first part that forms a recess into which the spherical connecting portion is rotatably fitted;
a second part rotatably connected to the grip portion of the first connecting member;
Equipped with
The joint structure of a doll body, wherein the gripping portion grips the second part with a first claw portion and a second claw portion that is longer than the first claw portion.