Toy parts and doll bodies

Abstract

To create a joint structure that can improve the flexibility of the movable parts of a doll's body. [Solution] The joint structure 100 of the doll body 2 includes a first swing link 110 connected to the waist base 101 and capable of swinging in the swinging direction, and a second swing link 120, one end of which is connected to the first swing link 110 and the other end of which is connected to the leg 6 and capable of swinging in the swinging direction relative to the first swing link 110. A multi-stage swing is achieved by a first swing in which the first swing link 110 swings relative to the waist base 101, and a second swing in which the second swing link 120 swings relative to the first swing link 110, making it possible to gradually pull out or insert the other end (third swing bearing 123) of the second swing link 120 from the waist 43.

Description

Technical Field

[0001] The present invention relates to the joint structure of a humanoid body and the like.

Background Art

[0002] As an example of a toy with a movable part, a humanoid body that can take various poses like a human is known. For example, Patent Document 1 describes a toy that can be enjoyed by moving its movable part.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Among humanoid bodies with movable parts, those that are particularly popular among boys are humanoid bodies that reproduce characters such as transformation heroes, soldiers, large humanoid robots, etc. (hereinafter collectively referred to as "original works") that appear in manga, anime, special effects movies, games, novels, etc.

[0005] When a user purchases a humanoid body of a character that appears in an original work, they always want to make it pose in exactly the same pose as seen in the original work. However, to make the humanoid body of the character that appears in the original work pose as in the original work, the range of movement of the movable part is narrow, and often the reproduction of the pose is incomplete. From the user's perspective, due to the insufficient flexibility of the movable part, it is impossible to get close to the pose of the original work, and there may be a feeling of disappointment.

[0006] The problem to be solved by the present invention is to realize a joint structure that can improve the flexibility of the movable part of a humanoid body. [[ID=*45]]

Means for Solving the Problems

[0007] An aspect of the present invention is a joint structure for a doll body in which the legs can swing in a predetermined swinging direction relative to a waist base, comprising: a first swinging link connected to the waist base and swinging in the swinging direction relative to the waist base; and a second swinging link, one end of which is connected to the first swinging link and the other end of which is connected to the leg and swinging in the swinging direction relative to the first swinging link, wherein the other end can be pulled out from the waist in stages or inserted in stages by a multi-stage swing caused by a first swing in which the first swinging link swings relative to the waist base and a second swing in which the second swinging link swings relative to the first swinging link.

[0008] Furthermore, depending on the position of the joint structure in the doll body, the other end may be displaceable between a position above and a position below the one end by the multi-stage oscillation when viewed from the front of the doll body.

[0009] Furthermore, regarding the connection structure between the first and second swing links, the first swing link may have an arc-shaped elongated hole along the direction of swing, be located on the outside of the waist base in the front view, have a connection portion for one end on the side facing the waist base, and the second swing link may be located between the waist base and the first swing link, with its other end connected to the leg through the elongated hole.

[0010] Furthermore, the waist base may have an arc-shaped groove on the side facing the first swing link that is aligned with the direction of swing, and the first swing link may have a protrusion on the surface facing the waist base that fits into the groove.

[0011] Furthermore, the waist base has an arc-shaped groove on the side facing the first swing link that is aligned with the direction of swing, the first swing link has a protrusion on the surface facing the waist base that fits into the groove, and the range of the first swing is defined as the range within which the protrusion can move relative to the groove. The range of the second oscillation may be defined as being within the movable range of the other end relative to the elongated hole.

[0012] Furthermore, the leg portion may have a thigh portion and a lower leg portion, the thigh portion may have an upper part and a lower part, the upper end of the upper part is connected to the other end of the second swing link, and the lower part is configured to swing in the swing direction relative to the upper part.

[0013] Furthermore, the lower leg portion may have an upper lower leg part and a lower lower leg part, and the connecting surface between the upper lower leg part and the lower lower leg part has an inclined surface that slopes in the front-rear direction from the front-upper to the rear-downward direction, and the lower lower leg part may be rotatably connected to the upper lower leg part along the inclined surface.

[0014] Furthermore, the leg portion may have a foot portion at its lower end, and the foot portion may be configured to have a heel portion, a central portion, a connecting part that connects the central portion to the heel portion so that it can be pulled out, and a toe portion that is connected to the central portion so that it can swing up and down.

[0015] Another embodiment is a doll body equipped with the aforementioned joint structure.

[0016] Furthermore, the doll body may comprise an upper arm and a forearm that is pivotably connected to the upper arm, the forearm having an upper arm side part and a hand side part, the connecting surface between the upper arm side part and the hand side part having a front-to-back inclined surface that slopes in the front-to-back direction from the upper arm side on the rear side of the doll body toward the hand side on the front side of the body, and the hand side part may be rotatably connected to the upper arm side part along the front-to-back inclined surface. [Effects of the Invention]

[0017] According to the present invention, it is possible to develop a joint structure for a doll body that can improve the flexibility of the movable parts. [Brief explanation of the drawing]

[0018] [Figure 1] Front external view of the humanoid in an upright posture. [Figure 2] Perspective external view of the joint structure. [Figure 3] Exploded perspective view of the joint structure. [Figure 4] Partial cross-sectional view in the longitudinal cross-section in the front-back direction around the waist base. [Figure 5] Transition diagram of the joint structure (Part 1) for explaining the operation of raising the leg. [Figure 6] Transition diagram of the joint structure (Part 2) for explaining the operation of raising the leg. [Figure 7] Transition diagram of the joint structure (Part 3) for explaining the operation of raising the leg. [Figure 8] Transition diagram of the joint structure (Part 4) for explaining the operation of raising the leg. [Figure 9] Partial cross-sectional view showing the joint structure when the first swing and the second swing are omitted and the third swing is performed. [Figure 10] Side view showing a detailed configuration example of the leg. [Figure 11] Exploded view showing a detailed configuration example of the leg. [Figure 12] Partial cut-away view around the thigh when the leg is viewed from the side. [Figure 13] Transition diagram of the joint structure (Part 1) for explaining the operation of raising the thigh of the leg. [Figure 14] Transition diagram of the joint structure (Part 2) for explaining the operation of raising the thigh of the leg. [Figure 15] Transition diagram of the joint structure (Part 3) for explaining the operation of raising the thigh of the leg. [Figure 16] Side view around the foot. [Figure 17] Exploded view around the foot. ]> [Figure 18] Transition diagram (Part 1) for explaining the operation of curving the foot. [Figure 19] Transition diagram (Part 2) for explaining the operation of curving the foot. [Figure 20] Transition diagram (Part 3) for explaining the operation of curving the foot. [Figure 21] Side view of the arm area (partially disassembled). [Modes for carrying out the invention]

[0019] Figure 1 is a front view of a doll body 2 in an upright position, which is an example of an embodiment to which the present invention is applied. The arrows in each figure indicate the directions of up and down (Y-axis direction; positive direction is up), front and back (Z-axis direction; positive direction is forward), and left and right (X-axis direction; positive direction is left) relative to the doll body 2. Directions in the following explanation will be based on these directions.

[0020] Doll body 2 is a toy that reproduces characters from manga, anime, tokusatsu films, games, novels, etc., as three-dimensional sculptures. Doll body 2 in this embodiment has a design that imitates a humanoid robot and is a toy that is made by assembling parts for different body parts.

[0021] The parts of the humanoid body 2 include a head 3, a torso 4, arms 5, and legs 6. The torso 4 has an upper chest 41, a central abdomen 42, and a lower waist 43. The basic form of the humanoid body 2 is a human-like form with the torso 4 at the center, a head 3 on top of it, arms 5 on the left and right sides, and two legs 6 at the bottom. In addition to this form, the humanoid body 2 may have a backpack-like attachment on its back (for example, a back thruster in the case of a robot weapon), wings on its back, or a tail attached. All of these have the basic form of the humanoid body 2 of this embodiment and can be called the humanoid body of this embodiment.

[0022] Now, Doll Body 2 is a humanoid robot soldier that appears in manga and anime, and is designed with the theme of a samurai warrior in armor. In particular, Doll Body 2 has a joint structure 100 in its waist 43 to improve flexibility and ensure a high degree of freedom to raise its legs 6, allowing users to play with Doll Body 2 in poses similar to those in the original work.

[0023] Figure 2 is a perspective view of the joint structure 100. Figure 3 is an exploded perspective view of the joint structure 100. The joint structure 100 is a structure that pivotably connects the leg portion 6 to the waist portion 43. The joint structure 100 includes a waist base 101, first pivot links 110 on the left and right sides (meaning the positive and negative sides in the X-axis direction, with the waist base 101 in between), second pivot links 120 on the left and right sides, and thigh joints 130 on the left and right sides.

[0024] Figure 4 is a partial cross-sectional view of the longitudinal section in the anterior-posterior direction around the waist base 101. The waist base 101 is a key part that connects the various parts of the waist 43. As shown in Figures 2 to 4, the upper part of the waist base 101 is provided with an abdominal connecting hole 102 that engages with a projection provided on the abdomen 42. The upper outer circumference of the front, rear, left, and right sides of the waist base 101 is provided with exterior mounting parts 103 for attaching the front waist exterior part 43f, the rear waist exterior part 43r, and the left and right lateral waist exterior parts 43s, respectively. The lower part of the waist base 101 is provided with a link support part 104 for connecting and supporting the first swing link 110 and the second swing link 120.

[0025] The link support portion 104 is a portion that extends downward from the waist base 101 and is a thin, plate-like portion in the left-right direction. The link support portion 104 has first pivot shafts 105 on the left and right sides on the front side, and has a first groove portion 106 and a second groove portion 107 that penetrate from left to right and are long in the vertical direction at a position behind the first pivot shaft 105, and are elongated holes that are curved in an arc shape with the first pivot shaft 105 as the center. The second groove portion 107 penetrates from left to right and is long in the vertical direction at a position further behind the first groove portion 106, and has an elongated hole shape that is curved in an arc shape with the first pivot shaft 105 as the center.

[0026] The first oscillating link 110 is connected to the waist base 101 and is a link that can oscillate vertically along the YZ plane. Specifically, the first oscillating link 110 has a first oscillating bearing 111 that fits with the first oscillating shaft 105 of the waist base 101. When the first oscillating shaft 105 is fitted into the first oscillating bearing 111, the first oscillating link 110 is pivotably connected to the waist base 101.

[0027] The first oscillating link 110 has an arc-shaped elongated hole 112 in the vertical direction along the YZ plane.

[0028] Furthermore, of the two first swing links 110, one (the right first swing link 110 in this embodiment) has three left and right connecting protrusions 113 (113a, 113b, 113c) on the surface facing the waist base 101. The other first swing link 110 (the left first swing link 110 in this embodiment) has three left and right connecting holes 114 (114a, 114b, 114c) on the surface facing the waist base 101 that fit into the left and right connecting protrusions 113, respectively.

[0029] The first left-right connecting protrusion 113a has an outer diameter that allows it to slide into the first groove 106 of the link support portion 104. The second left-right connecting protrusion 113b has an outer diameter that allows it to slide into the second groove 107 of the link support portion 104.

[0030] The two left and right first swing links 110 are connected by sandwiching the link support portion 104 of the waist base 101. Specifically, the first left and right connecting projection 113a is inserted through the first groove portion 106 of the link support portion 104 and fitted into the first left and right connecting hole 114a. The second left and right connecting projection 113b is inserted through the second groove portion 107 of the link support portion 104 and fitted into the second left and right connecting hole 114b. The third left and right connecting projection 113c is fitted into the third left and right connecting hole 114c at an external position to the link support portion 104, that is, a position that does not sandwich the link support portion 104. Then, the two left and right first swing links 110 become able to swing integrally around the first swing axis 105. In this state, when the joint structure 100 is viewed from the front, the left and right first swing links 110 are located on the left and right outer sides of the lumbar base 101, respectively (see Figure 2).

[0031] Furthermore, the first oscillating link 110 has a connecting portion 115 for connecting and pivoting the second oscillating link 120. The connecting portion 115 is a second oscillating bearing consisting of a through hole in the left-right direction.

[0032] The second oscillating link 120 has a second oscillating shaft 121 that protrudes in the left-right direction at one end (the lower end in Figure 3). The second oscillating link 120 is pivotably connected to the first oscillating link 110 by fitting the second oscillating shaft 121 into a connecting portion 115 that contacts the second oscillating bearing.

[0033] Furthermore, the second oscillating link 120 has a third oscillating bearing 123 at its other end (the upper end in Figure 3), which is a recess (or hole) provided along the same direction as the second oscillating shaft 121. The outer diameter of the third oscillating bearing 123 is set to a size that allows it to fit and slide into the elongated hole 112 of the first oscillating link 110.

[0034] The second oscillating link 120 is assembled to the first oscillating link 110 by fitting the second oscillating shaft 121 into the connecting portion 115 and fitting and inserting the third oscillating bearing 123 into the elongated hole portion 112, with the second oscillating link 120 sandwiched between the waist base 101 and the first oscillating link 110. The first oscillating link 110 is assembled to the waist base 101 with the second oscillating link 120 already assembled. In this state, when the joint structure 100 is viewed from the front (see Figure 2), the second oscillating link 120 is positioned between the waist base 101 and the first oscillating link 110.

[0035] The second oscillating link 120 connects the thigh joint 130, to which the leg portion 6 is connected, to the third oscillating bearing 123.

[0036] The thigh joint 130 is a movable part that connects the second oscillating link 120 to the leg 6. Specifically, the thigh joint 130 has a front base 131 and a rear base 132 that are rotatably connected by an axis and bearing in the front-rear direction. A leg connecting rod 133 extends from the front base 131, and a third oscillating shaft 134, which functions as a rod for connecting the waist, extends from the rear base 132. This third oscillating shaft 134 engages with the third oscillating bearing 123 of the second oscillating link 120.

[0037] Therefore, the thigh joint 130 is connected to the second swing link 120 so as to be rotatable in the front-rear direction with the third swing axis 134 as the left-right axis, and the front base 131 and the rear base 132 are fitted together on the front-rear axis, and the leg connecting rod 133 can swing on an axis that intersects with the left-right axis.

[0038] When the thigh joint 130 is attached to the second swing link 120 and the leg portion 6 is connected to the thigh joint 130, the other end of the second swing link 120 is connected to the leg portion 6 through the elongated hole 112 of the first swing link 110. More specifically, the other end is connected to the leg portion 6 via the thigh joint 130.

[0039] Next, we will explain the movement of the joint structure 100. Figures 5 to 8 are transition diagrams of the joint structure 100 to explain the movement of raising the leg 6, and the transitions are shown in the order of the figure numbers. In these figures, some components are omitted from the illustration and some parts are partially cut out to facilitate understanding. The thigh joint 130 and the leg 6 are shown in perspective with long dashed lines. The shape of the leg 6 is also shown in a simplified form.

[0040] Figure 5 shows the doll body 2 in an upright position. Focusing on the waist base 101 and the first oscillating link 110, the first left-right connecting protrusion 113a is located at the upper end of the elongated hole in the first groove 106, and is at the upper limit of the relative movable range for that protrusion relative to the waist base 101. Similarly, the second left-right connecting protrusion 113b is located at the upper end of the elongated hole in the second groove 107, and is also at the upper limit of the relative movable range for that protrusion. When viewed from the side, focusing on the relative positional relationship with the first oscillating shaft 105, both the first left-right connecting protrusion 113a and the second left-right connecting protrusion 113b are located above the first oscillating shaft 105.

[0041] Furthermore, focusing on the first oscillating link 110 and the second oscillating link 120, the third oscillating bearing 123 is located at the upper end of the elongated hole in the elongated hole portion 112, and is at the upper limit of the relative movable range of the bearing with respect to the first oscillating link 110.

[0042] To raise the leg portion 6, first, as shown in Figure 6, the first swing link 110 is rotated around the first swing axis 105 relative to the waist base 101, causing it to swing downward. This is referred to as the "first swing." The first swing allows the first left-right connecting protrusion 113a to move to the lower end of the elongated hole in the first groove 106, which is the lower limit of the movable range for that protrusion. The second left-right connecting protrusion 113b can also move to the lower end of the elongated hole in the second groove 107, which is the lower limit of the movable range for that protrusion.

[0043] Next, as shown in Figure 7, the second oscillating link 120 is rotated around the second oscillating shaft 121 relative to the first oscillating link 110, causing it to oscillate downward. This is referred to as the "second oscillation." The second oscillation allows the third oscillating bearing 123 to move to the lower end of the elongated hole in the elongated hole portion 112, which is the lower limit of the relative movement range for the bearing relative to the first oscillating link 110.

[0044] As a result, the multi-stage oscillation of the first and second oscillations causes the third oscillation bearing 123, the third oscillation shaft 134, and the thigh joint 130 to be gradually pulled out of the internal space of the waist 43 surrounded by the exterior parts (front waist exterior part 43f, rear waist exterior part 43r, and side waist exterior part 43s). In this state, the other end of the second oscillation link 120, i.e., the third oscillation bearing 123, has been displaced from a position above the one end of the second oscillation link 120, i.e., the second oscillation shaft 121, to a position below it, in a front view of the doll body 2, due to the multi-stage oscillation. Of course, by tracing the first and second oscillations in reverse order, the third oscillation bearing 123, the third oscillation shaft 134, and the thigh joint 130 can be gradually inserted back into their original positions within the waist 43.

[0045] Next, as shown in Figure 8, the thigh joint 130 and the leg portion 6 are rotated around the third pivot bearing 123 relative to the second pivot link 120, causing the leg portion 6 to pivot forward until it contacts the lower end of the front waist exterior part 43f. This is referred to as the "third pivot."

[0046] Because the third oscillation bearing 123 is pulled out from the waist 43 by the multi-stage oscillation of the first and second oscillations, the range of motion of the leg 6 due to the third oscillation relative to the waist 43 is much greater than when the third oscillation is performed without pulling out the third oscillation bearing 123 from the waist 43 (omitting the first and second oscillations) (see Figure 9). In other words, the joint structure 100 connecting the waist 43 and the leg 6 has improved flexibility compared to conventional structures. For example, if the doll body 2 is equipped with a gun-type attack weapon, the user can make the doll body 2 assume poses such as kneeling to shoot, prone to shoot with one knee bent, front kicks and knee kicks in close combat scenes, and climbing over obstacles with its leg raised.

[0047] Next, we will describe the detailed structure of leg section 6. Figure 10 is a side view showing a detailed example of the leg portion 6 of the doll body 2. Figure 11 is an exploded view of the same. Note that in these figures, some components are omitted from the illustration, and some parts are partially cut out to facilitate understanding.

[0048] The leg portion 6 includes a thigh portion 7, a lower leg portion 8, a foot portion 9, a knee outer part 10, and a knee inner part 11.

[0049] The thigh portion 7 further comprises an upper thigh part 71 and a lower thigh part 72.

[0050] The upper thigh part 71 further includes a rod fitting portion 73 and a fourth pivot shaft 74. The rod fitting portion 73 is a hole that fits axially and rotatably with the leg connecting rod 133 (see Figure 3) of the thigh joint 130, and functions as a bearing for the leg connecting rod 133. Therefore, the upper end of the upper thigh part 71 is connected to the third oscillating bearing 123 at the other end of the second oscillating link 120 via the thigh joint 130.

[0051] The fourth pivot axis 74 is a projection that functions as an axis for pivotably connecting the lower thigh part 72 to the upper thigh part 71, and is provided projecting outward to the left and right from each of the left and right sides of the lower end of the upper thigh part 71.

[0052] The lower thigh part 72 has a front lower part 75 that is in front of the doll body 2 in an upright position, and a rear lower part 76, and is assembled by sandwiching the upper thigh part 71 from the front and back with these two parts.

[0053] Figure 12 is a diagram that serves as both a side view of the leg 6, showing a partial cutaway of the thigh area and an exploded view of the knee area. For ease of understanding, the outline of the upper thigh part 71 is shown with a dashed line.

[0054] The front lower part 75 has an opening 751 at its front upper end through which the front upper end of the upper thigh part 71 is exposed, and a front axis guide groove 752.

[0055] The front shaft guide groove 752 is a recess carved into the left and right inner surfaces. The rear lower part 76 also has a rear shaft guide groove 761 similarly carved into its left and right inner surfaces. The front shaft guide groove 752 and the rear shaft guide groove 762 are positioned opposite each other so that the insides of both grooves communicate when the front lower part 75 and the rear lower part 76 are assembled. When the front lower part 75 and the rear lower part 76 are assembled, the front shaft guide groove 752 and the rear shaft guide groove 762 form a guide groove into which the fourth pivot shaft 74 slides. Therefore, the lower thigh part 72 is configured to pivot relative to the upper thigh part 71 along the YZ plane of the leg part 6 (in the upright position of the doll body 2) on the fourth pivot axis 74.

[0056] Furthermore, the posterior lower part 76 of the lower thigh part 72 has a fifth pivot axis 77 on both the left and right sides of its lower end, projecting in the left and right directions, respectively. The fifth pivot axis 77 functions as the axis of the knee joint of the leg 6 and is located posterior to the anterior-posterior center of the leg 6.

[0057] The lower leg portion 8 has an upper lower leg part 81 and a lower lower leg part 82. The former corresponds to the part on the gastrocnemius muscle side in the human body, and the latter corresponds to the part below the gastrocnemius muscle.

[0058] The upper lower leg part 81 is composed of two pieces: a left part 83 and a right part 84. The left part 83 and the right part 84 have a fifth oscillating bearing 85 into which the fifth oscillating shaft 77 can be inserted, and an interlocking projection guide groove 86 into which the interlocking projection 12 of the knee internal part 11 can be inserted, at the upper ends of the opposing surfaces of each other.

[0059] The knee interior part 11 is a cover that covers the front of the fifth pivot shaft 77 and the fifth pivot bearing 85, and has thickness in the left-right direction and has a semicircular shape when viewed from the side. When the doll body 2 is in an upright position, the upper part of the knee interior part 11 is inserted into the internal space formed by the lower thigh part 72.

[0060] Additionally, a knee armor part 10 is attached to the front of the upper lower leg part 81. The knee armor part 10 is designed to resemble the "knee pads" of armor.

[0061] The upper lower leg part 81 and the lower lower leg part 82 are connected so as to be axially rotatable by the lower leg rotation shaft 87, which protrudes diagonally upward and backward from the upper inclined surface 821 (the surface whose normal vector points diagonally upward and backward) of the lower lower leg part 82, and the lower leg rotation shaft 87, which is rotatably fitted into the lower leg rotation bearing hole 88 opened in the lower inclined surface 811 (the surface whose normal vector points diagonally downward and forward) of the upper lower leg part 81. A projection is provided on the upper end of the lower leg rotation shaft 87, and this projection catches on the inside of the lower leg rotation bearing hole 88, preventing it from coming loose.

[0062] When the upper lower leg part 81 and the lower lower leg part 82 are viewed from the side, the connecting surface F1 (see Figure 10; the joint surface between the upper inclined surface 821 and the lower inclined surface 811) of the two parts has an inclined surface that slopes in the front-to-back direction from the front-upper to the rear-downward position when the doll body 2 is in an upright position. The lower lower leg part 82 is then connected to the upper lower leg part 81 so as to be rotatable along this inclined surface.

[0063] Next, we will explain the movement of the leg portion 6. Figures 13 to 15 are transition diagrams of the joint structure 100 to explain the movement of raising the thigh of the leg 6, and the transitions are shown in the order of the figure numbers. In these figures, some components are omitted from the illustration and some parts are partially cut out to facilitate understanding.

[0064] When the first to third swings described above are performed, the leg portion 6 is swung forward, as shown in Figure 13. In the upright posture of the doll body 2, the front of the upper thigh portion 71, which faces forward, hits the lower end of the front waist outer portion 43f of the waist portion 43, and is in the upper limit position where the third swing cannot be performed any further.

[0065] From this state, if the lower thigh part 72 is further rotated on the fourth pivot axis 74 and oscillated upward relative to the upper thigh part 71 (at this time, the upper thigh part 71 oscillates relative to the lower thigh part 72 as the fourth pivot axis 74 slides from the lower end to the upper end within the guide groove inside the lower thigh part 72 as it rotates), the thigh part 7 will be raised even further upward, as shown in Figure 14.

[0066] This structure, which allows the thigh 7 to bend in the middle to improve the flexibility of the leg 6, is unprecedented. The multi-stage oscillation from the first to the fourth oscillation makes it possible to pose the doll body 2 with its thighs raised high.

[0067] From the state shown in Figure 14, if the lower leg portion 8 is further swung downward and backward relative to the thigh portion 7 on the fifth pivot axis 77, the leg portion 6 can be positioned with the knee bent, as shown in Figure 15. In the leg portion 6 of the mannequin body 2, the fifth pivot axis 77, which corresponds to the knee joint, is set at a position behind the front-to-back center line of the leg portion 6, so it is possible to bend the knee more than in a configuration where the fifth pivot axis 77 is set on the front-to-back center line.

[0068] By bending the knee, the user can make the doll body 2 perform a pose such as a knee kick. When the knee is bent, the lower end of the thigh 7 and the upper end of the lower leg 8 separate, causing the kneecap to open up, but the knee interior part 11 is positioned there, so the appearance is maintained.

[0069] Furthermore, by rotating the lower leg part 82 relative to the upper leg part 81 on the lower leg rotation axis 87, the user can also make the doll body 2 assume poses where the foot 9 is twisted inward or outward.

[0070] Next, we will describe the detailed structure of the foot portion 9. Figure 16 is a side view of the foot portion 9. Figure 17 is an exploded view thereof. The foot portion 9 includes a heel portion 91, a central portion 92 corresponding to the arch of the foot, a connecting part 93 that connects the central portion 92 to the heel portion 91 so that it can be pulled out and pivoted vertically, a toe portion 94 that is pivoted vertically to the central portion 92, and an instep cover 95.

[0071] The heel portion 91 is composed of two symmetrical pieces: a right part 911 and a left part 912. The right part 911 and the left part 912 each have an annular sixth oscillating bearing 913 provided at their front upper ends and a guide portion 914 provided in their internal space.

[0072] The two sixth pivot bearings 913, one on the left and one on the right, are fitted together so as to sandwich the sixth pivot shafts 181, which are provided on the left and right sides of the foot joint 180 located at the lower end of the lower leg part 82, and connect the foot 9 to the lower leg 8 so as to be able to pivot in the front-rear direction.

[0073] The guide portion 914 is a groove structure into which the seventh pivot shaft 931, which is provided on the left and right sides of the rear end of the connecting part 93, is slidably fitted, and when viewed from the side, it forms an arc with the rear slightly upward. When the right part 911 and the left part 912 are assembled so as to sandwich the connecting part 93 from both sides, the left and right guide portions 914 hold the seventh pivot shaft 931 between them, and the connecting part 93 is connected so as to be able to slide back and forth and pivot up and down relative to the heel portion 91.

[0074] Eighth pivot shafts 932 are provided protruding from the left and right sides of the front end of the connecting part 93, and these protrusions allow it to pivot vertically relative to the central part 92.

[0075] The central section 92 is composed of two pieces, an upper part 921 and a lower part 922. The upper part 921 is placed over the lower part 922 and assembled so that it sandwiches the connecting part 93 from above and below. Inside the central section 92, an eighth oscillating bearing 923 is formed by placing the upper part 921 over the lower part 922, which rotatably holds the eighth oscillating shaft 932 of the connecting part 93, and a ninth oscillating bearing 924 is formed, which rotatably holds the ninth oscillating shafts 941 that protrude from both the left and right ends of the rear extension of the toe section 94.

[0076] The upper part 921 has a ball joint 925 protruding from it. The instep cover 95 is connected to the upper surface of the ball joint 925 by a ball joint.

[0077] The instep cover 95 has an upper cover 952 having a socket portion 951 that connects to the ball portion 925, and a lower cover 953 that is connected to the toe side of the cover so as to be able to swing up and down.

[0078] Next, we will explain the movement of the foot 9. Figures 18 to 20 are transition diagrams illustrating the movement of flexing the foot 9, and the transitions are shown in the order of the figure numbers. Note that, in order to facilitate understanding, some components are omitted from the illustrations, and some are depicted in perspective.

[0079] As shown in Figure 18, in the upright position of the doll body 2, the heel portion 91, the central portion 92, and the toe portion 94 are in close contact in the front-to-back direction. Focusing on the connecting part 93, the seventh pivot axis 931 is located at the rear end of the guide portion 914. In this state, the sole of the foot portion 9 is flat and not curved.

[0080] From this position, by swinging the leg portion 6 backward while swinging the toe portion 94 upward relative to the central portion 92 on the ninth pivot axis 941, the foot portion 9 will be in a state where the base of the toes is in contact with the ground, and the arch of the foot and heel are raised, as shown in Figure 19.

[0081] From here, if the leg portion 6 is further swung backward, and the central portion 92 is separated from the heel portion 91 and swung relatively upward, the foot portion 9 will be in a state where the sole is bent backward, as shown in Figure 20. At this time, focusing on the connecting part 93, the seventh swing axis 931 is at the front end position of the guide portion 914. The limit of this bending of the foot portion 9 is caused by the upper rear end of the instep cover 95 coming into contact with the front lower end of the lower leg portion 82.

[0082] In this way, the feet 9 of the doll body 2 can bend backward just like human feet, making it possible to pose the doll body 2 in a way that realistically reproduces the feeling of pushing off the ground.

[0083] In summary, this embodiment improves the flexibility of the lower body of the doll body 2, enabling a variety of poses that were previously impossible to achieve.

[0084] [Variation] The embodiments to which the present invention can be applied are not limited to the examples described above, and components can be added, omitted, or modified as appropriate.

[0085] (Variation 1) In the above embodiment, an example configuration is shown in which the left and right first swing links 110 are integrally connected with the link support portion 104 in between. However, the left and right first swing links 110 may also be connected separately to the link support portion 104 without being connected.

[0086] Specifically, the first groove 106 and the second groove 107 are not holes that penetrate the link support portion 104 from left to right, but rather literal grooves recessed into the left and right sides. Then, protrusions that engage with these grooves are provided on each of the left and right first swing links 110, instead of the left and right connecting protrusions 113 and left and right connecting holes 114. The left and right first swing links 110 may then be assembled in such a way that they swing along the left and right sides of the link support portion 104.

[0087] (Variation 2) Furthermore, in the above embodiment, the connecting structure between the upper lower leg part 81 and the lower lower leg part 82 makes it possible to twist the lower leg part 8 of the leg part 6 to the left and right. A similar connecting structure can also be applied to the configuration of the forearm part of the arm part 5.

[0088] Specifically, Figure 21 is a side view showing an example of a configuration when the connecting structure of the upper lower leg part 81 and the lower lower leg part 82 in the above embodiment is applied to the left arm 5 of the doll body 2.

[0089] In this configuration, the arm portion 5 has an upper arm portion 51 and a forearm portion 53 that is pivotably (rotatably) connected to the upper arm portion 51 by an elbow joint 52. The forearm portion 53 has an upper arm side part 54 and a hand side part 55.

[0090] The upper arm part 54 has an inclined surface 541 whose normal is directed diagonally downward and backward, and a forearm rotation axis 542 protruding from there in the same direction. The tip of the forearm rotation axis 542 has an enlarged diameter portion.

[0091] The hand-side part 55 consists of two pieces, a right part 551 and a left part 552. By assembling these two parts facing each other, the forearm rotation axis 542 and the hand joint 56 are rotatably clamped. Specifically, the hand-side part 55 has an inclined surface 553 whose normal is directed diagonally upward and forward, and a forearm rotation bearing 554 into which the forearm rotation axis 542, which penetrates into the internal space along the same direction, is rotatably fitted.

[0092] In other words, the connecting surface between the upper arm part 54 and the hand part 55 (the interface between the inclined surface 541 and the inclined surface 553) forms a front-to-back inclined surface that slopes in the front-to-back direction from the upper arm side on the rear side of the body of the doll body 2 toward the hand side on the front side of the body, and the hand part 55 is rotatably connected to the upper arm part 54 along the front-to-back inclined surface. Therefore, similar to the relative twist between the upper leg part 81 and the lower leg part 82 in the lower leg part 8 of the above embodiment, a relative twist between the upper arm part 54 and the hand part 55 in the forearm part 53 can be realized.

[0093] (Variation 3) Furthermore, while the doll body 2 was used as an example of a movable toy, the movable toys to which the joint structure 100 of the present invention can be applied are not limited to humanoid toys; it can also be applied to the joints of animals (whether real or fictional). In the above embodiment, the joint structure 100 was used as a hip joint, but in the case of a two-headed character, the joint structure 100 may be used as a neck joint. [Explanation of Symbols]

[0094] 2... Doll body 4... Torso 5...Arms 6...legs 7...Thigh 8...lower leg 9...foot 11...Knee interior parts 43...lower back 53...Forearm 54...Upper arm side part 55...Hand-side parts 71... Upper thigh part 72...Lower thigh part 74...Fourth pivot axis 77...Fifth pivot axis 81... Upper lower leg part 82...Lower leg part 85...5th oscillating bearing 87...Lower leg rotation axis 88...Lower leg rotation bearing hole 91...Heel 92...Central part 93...Connecting parts 94...Toe area 100... Joint structure 101...lumbar base 104...Link support section 105...First pivot axis 106...First trench section 107...Second trench section 110...First oscillation link 111...First oscillating bearing 112...Long hole part 115...Connecting section (second oscillating bearing) 120...Second oscillation link 121...Second pivot axis 123...Third oscillating bearing 130...Thigh joint 134...Third pivot axis 180...Foot joint 181...6th pivot axis 541...Slope 542... Forearm rotation axis 553...Slope 554...Forearm Rotating Bearing 913...6th oscillating bearing 923...8th oscillating bearing 924...9th oscillating bearing 931...7th pivot axis 932...8th pivot axis 941...Ninth pivot axis F1...Connection surface

Claims

1. A joint structure for a doll body in which the legs can swing in a predetermined direction relative to the waist base, A first swing link is connected to the waist base and is capable of swinging relative to the waist base in the swinging direction, A second swing link, one end of which is connected to the first swing link and the other end of which is connected to the leg portion, and which is capable of swinging in the swing direction relative to the first swing link, A joint structure comprising a first swing of the first swinging link relative to the waist base and a second swing of the second swinging link relative to the first swinging link, which allows the other end to be pulled out from the waist in stages or inserted in stages.

2. The joint structure according to claim 1, wherein the other end is displaceable between a position above and a position below the one end by the multi-stage swing when viewed from the front of the doll body.

3. The first swing link has an arc-shaped elongated hole along the direction of swing, The first swing link is located on the outside of the waist base in the front view, The first swing link has a connection portion with the one end on the side surface of the waist base, The second swing link is located between the waist base and the first swing link, and its other end is connected to the leg portion through the elongated hole. The joint structure according to claim 1 or 2.

4. The waist base has an arc-shaped groove on the side surface on the first swing link side, along the swing direction. The first swing link has a protrusion on the surface facing the waist base that fits into the groove, The joint structure according to any one of claims 1 to 3.

5. The waist base has an arc-shaped groove on the side surface on the first swing link side, along the swing direction. The first swing link has a protrusion on the surface facing the waist base that fits into the groove, The range of the first oscillation is defined as the range within which the protrusion can move relative to the groove, The range of the second oscillation is determined within the movable range of the other end relative to the elongated hole. The joint structure according to claim 3.

6. The aforementioned leg portion has a thigh portion and a lower leg portion. The aforementioned thigh portion has an upper part and a lower part, The upper end of the upper part is connected to the other end of the second swing link. The lower part is configured to swing relative to the upper part in the swinging direction. The joint structure according to any one of claims 1 to 5.

7. The lower leg portion comprises an upper lower leg part and a lower lower leg part. The connecting surface between the upper lower leg part and the lower lower leg part has an inclined surface that slopes in the front-rear direction from the front-upper to the rear-downward direction. The lower leg part is rotatably connected to the upper leg part along the inclined surface. The joint structure according to claim 6.

8. The leg portion has a foot portion at its lower end, The foot is, The heel and, The central part, A connecting part that connects the central part to the heel portion in a way that allows it to be pulled out, A toe portion is connected to the aforementioned central portion so as to be able to swing vertically, Having, The joint structure according to any one of claims 1 to 7.

9. A doll body having the joint structure described in any one of claims 1 to 8.

10. Upper arm and, A forearm portion is pivotably connected to the upper arm portion, It is equipped with, The forearm portion comprises an upper arm side part and a hand side part. The connecting surface between the upper arm part and the hand part has a front-to-back inclined surface that slopes in the front-to-back direction from the rear upper arm side of the body to the front hand side of the body. The hand-side part is rotatably connected to the upper arm-side part along the front-rear inclined surface, The doll body according to claim 9.

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