JP2024075784A - Movable structure and doll body - Google Patents

Abstract

[Problem] To realize a joint structure that can improve the flexibility of the movable parts of a doll body. [Solution] A joint structure 100 of a doll body 2 comprises a first swing link 110 connected to a waist base 101 and capable of swinging in a swing 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 a leg 6 and capable of swinging in the swing direction relative to the first swing link 110. The other end of the second swing link 120 (third swing bearing 123) can be pulled out or inserted in stages from the waist 43 by multi-stage swinging caused 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. [Selected Figure] Fig. 8

Description

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

One example of a toy with movable parts is a doll body that can be posed in a variety of ways, just like a human. For example, Patent Document 1 describes a toy that can be enjoyed by moving the movable parts.

JP 2017-159139 A

Among the dolls with movable parts, those that are especially popular among boys are those that recreate characters such as transforming heroes, soldiers, and large humanoid robots that appear in manga, anime, special effects movies, games, novels, etc. (hereafter collectively referred to as "original works").

When users purchase a doll of a character that appears in an original work, they want to be able to make it pose exactly as they saw it in the original work. However, the range of motion of the movable parts of a doll of a character that appears in an original work is narrow, and it is often the case that the reproduction of the pose is incomplete. From the user's point of view, because the flexibility of the movable parts is insufficient, it is difficult to reproduce the pose from the original work, and this can leave the user feeling disappointed.

The problem that this invention aims to solve is to realize a joint structure that can improve the flexibility of the movable parts of a doll body.

The present invention relates to a joint structure for a doll body in which the legs can swing in a predetermined swing direction relative to a waist base, the joint structure comprising a first swing link connected to the waist base and swingable in the swing direction relative to the waist base, and a second swing link having one end connected to the first swing link and the other end connected to the leg and swingable in the swing direction relative to the first swing link, and the other end can be pulled out or inserted in stages from the waist by multi-stage swinging caused by a first swing in which the first swing link swings relative to the waist base and a second swing in which the second swing link swings relative to the first swing link.

Depending on the position of the joint structure in the doll body, the other end may be displaceable to a position above or below the one end by the multi-stage swing when viewed from the front of the doll body.

Specifically, the connection structure between the first swing link and the second swing link may be such that the first swing link has an arc-shaped long hole along the swing direction, the first swing link is located outside the waist base in the front view, the first swing link has a connection part with the one end on the side facing the waist base, and the second swing link is located between the waist base and the first swing link, and the other end is connected to the leg through the long hole.

The waist base may also have an arc-shaped groove along the swing direction on the side facing the first swing link, and the first swing link may have a protrusion that fits into the groove on the surface facing the waist base.

Further, the waist base body has an arc-shaped groove portion along the swing direction on a side surface on the side of the first swing link, and the first swing link has a protrusion portion that fits into the groove portion on a surface facing the waist base body, and the range of the first swing is determined within a range in which the protrusion portion can move relative to the groove portion,
The second swing range may be determined within a range in which the other end portion can move relative to the long hole portion.

The leg may have a thigh and a crus, the thigh may have an upper part and a lower part, the upper end of the upper part may be connected to the other end of the second swing link, and the lower part may be configured to be swingable in the swing direction relative to the upper part.

The lower leg portion may also have an upper leg part and a lower leg part, the connecting surface between the upper leg part and the lower leg part may have an inclined surface that is inclined in the front-to-rear direction from the upper front to the lower rear, and the lower leg part may be rotatably connected to the upper leg part along the inclined surface.

The leg may also have a foot at its lower end, the foot having a heel, a central portion, a connecting part that connects the central portion to the heel portion so that the central portion can be pulled out, and a toe portion that is connected to the central portion so that the toe can swing up and down.

Another aspect is a doll body equipped with the above-mentioned joint structure.

The doll body may also be configured to have an upper arm and a forearm connected to the upper arm so that it can swing, the forearm having an upper arm part and a hand part, the connecting surface between the upper arm part and the hand part having a front-to-rear inclined surface that is inclined in the front-to-rear direction from the upper arm side on the rear side of the doll body's body to the hand side on the front side of the body, and the hand part rotatably connected to the upper arm part along the front-to-rear inclined surface.

The present invention makes it possible to create a joint structure for a doll body that can improve the flexibility of the movable parts.

FIG. FIG. FIG. FIG. 3 is a partial cross-sectional view of the waist base body and its surroundings taken along a longitudinal section in the front-rear direction. This is a transition diagram of the joint structure to explain the leg raising motion (part 1). This is a transition diagram of the joint structure to explain the leg raising motion (part 2). This is a transition diagram of the joint structure to explain the leg raising motion (part 3). This is a transition diagram of the joint structure to explain the leg raising motion (part 4). FIG. 13 is a partial cross-sectional view showing the joint structure when the first and second swings are omitted and the third swing is performed. FIG. 4 is a side view showing a detailed configuration example of a leg portion. FIG. 4 is an exploded view showing a detailed configuration example of a leg portion. A partial cutaway view of the thigh area from the side of the leg. FIG. 1 is a transition diagram of a joint structure to explain the action of raising the thigh of the leg (part 1). FIG. 2 is a transition diagram of the joint structure to explain the action of raising the thigh of the leg (part 2). FIG. 3 is a transition diagram of the joint structure to explain the action of raising the thigh of the leg (part 3). Side view of the foot area. Exploded view of the foot area. FIG. 1 is a transition diagram for explaining the action of bending the foot (part 1). FIG. 2 is a transition diagram for explaining the action of bending the foot (part 2). FIG. 3 is a transition diagram for explaining the action of bending the foot (part 3). Side view of the arm area (partially disassembled).

Figure 1 is a front external 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 directional indications by arrows shown in each figure indicate the up and down directions (Y-axis direction; positive direction is up) for the doll body 2, the front and back directions (Z-axis direction; positive direction is forward) for the doll body 2, and the left and right directions (X-axis direction; positive direction is left) for the doll body 2. The directions in the following explanations will be based on this.

The doll body 2 is a toy that reproduces a character based on an original manga, anime, special effects movie, game, novel, etc. as a three-dimensional object. The 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.

The parts of the doll body 2 are the head 3, torso 4, arms 5, and legs 6. The torso 4 has an upper part, the chest 41, a central part, the abdomen 42, and a lower part, the waist 43. The basic form of the doll body 2 is a human-like form with the torso 4 at the center, one head 3 at the top, arms 5 on each side, and two legs 6 at the bottom. In addition to this form, the doll body 2 may be provided with a backpack-like attachment on the back (for example, a back vernier in the case of a robot weapon), wings on the back, or a tail. All of these have the basic form of the doll body 2 of this embodiment, and can be called the doll body of this embodiment.

The doll body 2 is a humanoid robot soldier that appears in manga and anime, and is designed based on the theme of an armored warrior. In particular, the doll body 2 is provided with a joint structure 100 in the waist 43, which improves flexibility and ensures sufficient freedom to raise the legs 6, allowing the user to play with the doll body 2 in poses similar to those in the original work.

Figure 2 is a perspective external 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 swingably connects the legs 6 to the waist 43. The joint structure 100 has a waist base 101, first swing links 110 on each side (meaning the positive and negative sides in the X-axis direction with the waist base 101 in between), second swing links 120 on each side, and thigh joints 130 on each side.

FIG. 4 is a partial cross-sectional view of the waist base body 101 and its surroundings taken along a longitudinal section in the front-rear direction.
The waist base 101 is a key part that connects the various parts of the waist 43. As shown in Figures 2 to 4, an abdominal connection hole 102 that fits with a protrusion provided on the abdomen 42 is provided in the upper part of the waist base 101. Exterior mounting parts 103 for mounting the front waist exterior part 43f, the rear waist exterior part 43r, and the left and right side waist exterior parts 43s are provided on the upper outer circumference of the front, rear, left and right sides of the waist base 101. And a link support part 104 for connecting and supporting the first swing link 110 and the second swing link 120 is provided in the lower part of the waist base 101.

The link support 104 is a portion that extends below the waist base 101, and is a plate-like portion that is thin in the left-right direction. The link support 104 has a first swing shaft 105 on the left and right sides of the front side, and has a first groove 106 and a second groove 107 that are long holes that penetrate left-right at a position rearward of the first swing shaft 105, are long in the vertical direction, and are curved in an arc shape centered on the first swing shaft 105. The second groove 107 is long in the vertical direction, penetrates left-right at a position further rearward of the first groove 106, and has an elongated hole shape that is curved in an arc shape centered on the first swing shaft 105.

The first swing link 110 is connected to the waist base 101 and is a link that can swing up and down along the YZ plane. Specifically, the first swing link 110 has a first swing bearing 111 that fits with the first swing shaft 105 of the waist base 101. When the first swing shaft 105 is fitted into the first swing bearing 111, the first swing link 110 is swingably connected to the waist base 101.

The first swing link 110 has an arc-shaped long hole portion 112 extending vertically along the YZ plane.

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

The first left/right connecting protrusion 113 a has an outer diameter that fits slidably into the first groove 106 of the link support portion 104 .
The second left-right connecting protrusion 113 b has an outer diameter that fits slidably into the second groove 107 of the link support portion 104 .

The two left and right first swing links 110 are connected by sandwiching the link support part 104 of the waist base body 101. Specifically, in this connection, the first left and right connecting protrusion 113a is inserted through the first groove part 106 of the link support part 104 and fitted into the first left and right connecting hole 114a. The second left and right connecting protrusion 113b is inserted through the second groove part 107 of the link support part 104 and fitted into the second left and right connecting hole 114b. The third left and right connecting protrusion 113c is fitted into the third left and right connecting hole 114c at a position outside the link support part 104, i.e., at a position that does not sandwich the link support part 104. The two left and right first swing links 110 are then able to swing together around the first swing shaft 105. In this state, when the joint structure 100 is viewed from the front, the left and right first swing links 110 are positioned on the outside of the left and right sides of the waist base 101 (see Figure 2).

The first swing link 110 also has a connecting portion 115 for connecting and pivotally supporting the second swing link 120. The connecting portion 115 is a second swing bearing consisting of a through hole in the left-right direction.

The second swing link 120 has a second swing shaft 121 that protrudes in the left-right direction at one end (the end on the lower side of the drawing in FIG. 3). The second swing link 120 is swingably connected to the first swing link 110 by fitting the second swing shaft 121 into the connecting portion 115 that abuts against the second swing bearing.

The second swing link 120 also has a third swing bearing 123, which is a recess (or hole) provided along the same direction as the second swing shaft 121, at the other end (the end on the upper side in FIG. 3). The outer diameter of the third swing bearing 123 is set to a dimension that allows it to slide by fitting into the long hole portion 112 of the first swing link 110.

The second swing link 120 is assembled to the first swing link 110 at a position sandwiched between the waist base 101 and the first swing link 110 by fitting the second swing shaft 121 into the connecting portion 115 and fitting and inserting the third swing bearing 123 into the long hole portion 112. The first swing link 110 is assembled to the waist base 101 with the second swing link 120 assembled. In this state, when the joint structure 100 is viewed from the front (see FIG. 2), the second swing link 120 is located between the waist base 101 and the first swing link 110.

The second swing link 120 then connects the thigh joint 130, to which the leg 6 is connected, to the third swing bearing 123.

The thigh joint 130 is a movable part that connects the second swing link 120 and the leg 6. Specifically, the thigh joint 130 has a front base 131 and a rear base 132 that are rotatably connected by a longitudinal axis and bearings. A leg connecting rod 133 extends from the front base 131, and a third swing shaft 134 that functions as a waist connecting rod extends from the rear base 132. This third swing shaft 134 fits into the third swing bearing 123 of the second swing link 120.

The thigh joint 130 is therefore connected to the second swing link 120 so that it can rotate in the front-rear direction with the third swing shaft 134 as a left-right axis, and the leg connecting rod 133 can swing on an axis that intersects the left-right direction with the front-rear axis that fits the front base 131 and the rear base 132 together.

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

Next, the operation of the joint structure 100 will be described.
5 to 8 are transition diagrams of the joint structure 100 for explaining the operation of raising the leg 6, and the transition is made in the order of the figure numbers. Note that in these figures, in order to facilitate understanding, some components are omitted and some parts are partially cut away. Also, 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 manner.

FIG. 5 corresponds to a state in which the doll body 2 stands upright.
Focusing on the waist base 101 and the first swing link 110, the first left-right connecting protrusion 113a is at the upper end of the long hole of the first groove 106, and is at the upper limit of the range of relative movement for that protrusion with respect to the waist base 101. The second left-right connecting protrusion 113b is at the upper end of the long hole of the second groove 107, and is also at the upper limit of the range of relative movement for that protrusion. When viewed from the side while paying attention to the relative positional relationship with the first swing shaft 105, both the first left-right connecting protrusion 113a and the second left-right connecting protrusion 113b are located above the first swing shaft 105.

Furthermore, when we look at the first swing link 110 and the second swing link 120, the third swing bearing 123 is located at the upper end of the long hole of the long hole portion 112, and is at the upper limit of the relative movement range of the bearing with respect to the first swing link 110.

To raise the leg 6, first, as shown in FIG. 6, the first swing link 110 is rotated around the first swing shaft 105 relative to the waist base 101 to swing downward. This is called the "first swing." The first swing allows the first left/right connecting protrusion 113a to move to the lower end of the long hole in the first groove 106, which is the lower limit of the range of movement for that protrusion. The second left/right connecting protrusion 113b can move to the lower end of the long hole in the second groove 107, which is the lower limit of the range of movement for that protrusion.

Next, as shown in FIG. 7, the second swing link 120 is rotated around the second swing shaft 121 relative to the first swing link 110 to swing downward. This is called the "second swing." The second swing allows the third swing bearing 123 to move to the lower end of the long hole of the long hole portion 112, which corresponds to the lower limit of the relative movement range of the bearing with respect to the first swing link 110.

As a result, the third swing bearing 123, the third swing shaft 134, and the thigh joint 130 are 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, side waist exterior part 43s) by the multi-stage swing of the first swing and second swing. In this state, the other end of the second swing link 120, i.e., the third swing bearing 123, is displaced from a position above one end of the second swing link 120, i.e., the second swing shaft 121, to a position below it by the multi-stage swing when viewed from the front of the doll body 2. Of course, if the first swing and the second swing are performed in reverse order, the third swing bearing 123, the third swing shaft 134, and the thigh joint 130 can be gradually inserted back to their original positions in the waist 43.

Next, as shown in FIG. 8, the thigh joint 130 and the leg 6 are rotated around the third swing bearing 123 relative to the second swing link 120, and the leg 6 is swung forward until it abuts against the lower end of the front waist exterior part 43f. This is called the "third swing."

Because the third rocking bearing 123 is pulled out from the waist 43 by the multi-stage rocking of the first rocking and the second rocking, the rocking angle of the leg 6 by the third rocking with respect to the waist 43 is much larger than when the third rocking bearing 123 is not pulled out from the waist 43 (the first rocking and the second rocking are omitted) and the third rocking is performed (see FIG. 9). In other words, the joint structure 100 connecting the waist 43 and the leg 6 has improved flexibility compared to the conventional art. For example, if the doll body 2 is equipped with a gun-type offensive weapon, the user can make the doll body 2 take a knee-shooting pose, a prone shooting pose with one knee bent, a front kick or knee kick pose in a close combat scene, a pose to climb over an obstacle with the leg raised, and the like.

Next, the detailed structure of the leg portion 6 will be described.
Fig. 10 is a side view showing a detailed configuration example of the leg 6 of the doll body 2. Fig. 11 is an exploded view of the same. Note that in these figures, in order to facilitate understanding, some components are omitted and some parts are cut away.

The leg 6 has a thigh 7, a lower leg 8, a foot 9, an exterior knee part 10, and an interior knee part 11.

The thigh 7 further includes an upper thigh part 71 and a lower thigh part 72.

The thigh upper part 71 further has a rod fitting portion 73 and a fourth swing shaft 74 .
The rod fitting portion 73 is a hole portion into which the leg connecting rod 133 (see FIG. 3) of the thigh joint 130 is fitted so as to be rotatable about its axis, and functions as a bearing for the leg connecting rod 133. Therefore, the upper end portion of the thigh upper part 71 is connected to the third swing bearing 123 at the other end portion of the second swing link 120 via the thigh joint 130.

The fourth pivot axis 74 is a protrusion that functions as an axis for pivotably connecting the thigh lower part 72 to the thigh upper part 71, and protrudes outward to the left and right on the left and right sides of the lower end of the thigh upper part 71.

The lower thigh part 72 has a front lower part 75, which is in the front when the doll body 2 is in the upright position, and a rear lower part 76, which are assembled so that they sandwich the upper thigh part 71 from the front and back.

Figure 12 is a diagram that combines a partially cutaway view of the thigh area with the leg 6 viewed from the side, 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.

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

The front shaft guide groove 752 is a recessed portion carved into the left and right inner surfaces. The rear lower part 76 also has a rear shaft guide groove 761 carved into the left and right inner surfaces. The front shaft guide groove 752 and the rear shaft guide groove 762 are provided in opposing positions such that the insides of both grooves communicate with each other 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 oscillation shaft 74 slidably fits.
Therefore, the thigh lower part 72 is configured to be able to swing relative to the thigh upper part 71 about the fourth swing axis 74 along the YZ plane of the leg 6 (when the doll body 2 is in an upright position).

The rear lower part 76 of the thigh lower part 72 has a fifth swing shaft 77 that protrudes in the left and right directions on both the left and right sides of the lower end. The fifth swing shaft 77 functions as an axis for the knee joint of the leg 6, and is located behind the center of the front-to-rear of the leg 6.

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

The upper 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, at the upper end of the opposing surface side, a fifth oscillating bearing 85 into which the fifth oscillating shaft 77 can be inserted, and an interlocking protrusion guide groove 86 into which the interlocking protrusion 12 of the knee internal part 11 can be inserted.

The knee interior part 11 is a cover that covers the front of the fifth oscillating shaft 77 and the fifth oscillating bearing 85, has a 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.

In addition, a knee exterior part 10 is attached to the front of the upper lower leg part 81. In terms of design, the knee exterior part 10 corresponds to the "knee pad" of armor.

The upper leg part 81 and the lower leg part 82 are rotatably connected by the lower leg rotation shaft 87, which protrudes diagonally upward and backward from the upper inclined surface 821 (surface whose normal faces diagonally upward and backward) of the lower leg part 82, and is rotatably fitted into the lower leg rotation bearing hole 88 opened in the lower inclined surface 811 (surface whose normal faces diagonally downward and forward) of the upper leg part 81. A protrusion is provided on the upper end of the lower leg rotation shaft 87, which hooks on the inside of the lower leg rotation bearing hole 88 to prevent it from coming loose.

When the upper leg part 81 and the lower leg part 82 are connected in a side view, the connection surface F1 between them (see FIG. 10; the mating surface between the upper inclined surface 821 and the lower inclined surface 811) can be said to have an inclined surface that inclines in the front-to-rear direction from the upper front to the lower rear when the doll body 2 is in an upright position. The lower leg part 82 is connected to the upper leg part 81 so that it can rotate along this inclined surface.

Next, the operation of the leg 6 will be described.
13 to 15 are transition diagrams of the joint structure 100 for explaining the operation of lifting the thigh of the leg 6, and the transition is made in the order of the figure numbers. Note that in these figures, in order to facilitate understanding, some components are omitted from the illustration and some parts are partially cut away.

When the first to third swings described above are performed, the legs 6 are raised forward as shown in FIG. 13. When the doll body 2 is in an upright position and facing forward, the front surface of the upper thigh part 71 comes into contact with the lower end of the front waist exterior part 43f of the waist 43, and is in an upper limit position where the third swing cannot be performed any further.

From this state, the thigh lower part 72 is further rotated on the fourth swing shaft 74 to swing upward relative to the thigh upper part 71 (at this time, the fourth swing shaft 74 rotates while sliding from the bottom end to the top end within the guide groove in the thigh lower part 72, causing the thigh upper part 71 to swing relative to the thigh lower part 72), resulting in the thigh 7 being raised further upward as shown in FIG. 14.

In this way, a structure that allows the thighs 7 to bend in the middle and improves the flexibility of the legs 6 has not existed in the past. By using multiple swings from the first swing to the fourth swing, it is possible to make the doll body 2 pose with its thighs raised high.

From the state shown in FIG. 14, if the lower leg 8 is further swung backward and downward with respect to the thigh 7 on the fifth swing shaft 77, the leg 6 can be brought into a state in which the knee is bent, as shown in FIG. 15. In the leg 6 of the doll body 2, the fifth swing shaft 77, which corresponds to the knee joint, is set in a position rearward of the front-to-back center line of the leg 6, so that the knee can be bent more than in a configuration in which the fifth swing shaft 77 is set on the front-to-back center line.

By bending the knees, the user can make the doll body 2 assume, for example, a knee-kicking pose. When the knees are bent, the lower end of the thigh 7 and the upper end of the lower leg 8 move apart, causing the kneecaps to open, but because the knee interior part 11 is positioned there, it is possible to maintain a good appearance.

In addition, by rotating the lower leg part 82 relative to the upper leg part 81 on the lower leg rotation axis 87, the user can further make the doll body 2 assume a pose in which the foot 9 is twisted inward or outward.

Next, the detailed structure of the foot portion 9 will be described.
Fig. 16 is a side view of the foot 9 and its surroundings. Fig. 17 is an exploded view of the same. The foot 9 has a heel 91, a central portion 92 corresponding to the position of the arch of the foot, a connecting part 93 that connects the central portion 92 to the heel 91 so as to be able to be pulled out and to be able to swing up and down, a toe portion 94 connected to the central portion 92 so as to be able to swing up and down, and an instep cover 95.

The heel part 91 is composed of two pieces, a right part 911 and a left part 912, which are bilaterally symmetrical. The right part 911 and the left part 912 each have a sixth oscillating bearing 913 in the shape of an annular ring provided at the front upper end, and a guide part 914 provided in the internal space.

The two sixth oscillating bearings 913 on the left and right are fitted so as to sandwich the sixth oscillating shafts 181 protruding from the left and right sides of the foot joint 180 provided at the lower end of the lower leg part 82 from the left and right, connecting the foot 9 to the lower leg 8 so that it can oscillate in the front-rear direction.

The guide portion 914 has a groove structure into which the seventh oscillating shaft 931 protruding from the left and right side surfaces of the rear end of the connecting part 93 is slidably fitted, and forms an arc with a slightly upward rear end when viewed from the side. When the right part 911 and the left part 912 are assembled so as to sandwich the connecting part 93 from the left and right, the seventh oscillating shaft 931 is sandwiched and held between the left and right guide portions 914, and the connecting part 93 is connected to the heel portion 91 so that it can slide back and forth and can swing up and down.

An eighth pivot shaft 932 protrudes from the left and right side surfaces of the front end of the connecting part 93, and is connected to the central part 92 by this protrusion so that it can pivot up and down.

The central portion 92 is composed of two pieces, an upper part 921 and a lower part 922, and is assembled by placing the upper part 921 over the lower part 922 so as to sandwich the connecting part 93 from above and below. Inside the central portion 92, by assembling the upper part 921 over the lower part 922, an eighth oscillating bearing 923 that rotatably holds the eighth oscillating shaft 932 of the connecting part 93 and a ninth oscillating bearing 924 that rotatably holds the ninth oscillating shaft 941 protruding from both the left and right ends of the rear end extension of the toe portion 94 are formed.

The upper part 921 has a protruding ball portion 925. The upper surface of the ball portion 925 is connected to the instep cover 95 by a ball joint.

The instep cover 95 has an upper cover 952 with 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 that it can swing up and down.

Next, the operation of the foot 9 will be described.
18 to 20 are transition diagrams for explaining the operation of bending the foot 9, and the transition is made in the order of the figure numbers. Note that in these diagrams, in order to facilitate understanding, some components are omitted from the illustration and some are drawn in a see-through manner.

As shown in FIG. 18, when the doll body 2 is in an upright position, the heel 91, the middle 92, and the toe 94 are in close contact with each other in the front-to-rear direction. Focusing on the connecting part 93, the seventh swing shaft 931 is located at the rear end position of the guide part 914. In this state, the sole of the foot 9 is flat and not curved.

From this point, when the leg 6 is swung backward and the toe portion 94 is swung upwards relative to the center portion 92 on the ninth swing shaft 941, the foot 9 comes into a state in which the base of the toes is in contact with the ground and the arch to the heel are raised, as shown in FIG. 19.

If the leg 6 is further swung backward from this point, and the center portion 92 is moved away from the heel portion 91 and swung relatively upward, the sole of the foot 9 will be warped as shown in FIG. 20. At this time, when focusing on the connecting part 93, the seventh swing shaft 931 is at the front end position of the guide part 914. The limit of such warping of the foot 9 is set when the upper rear end of the instep cover 95 comes into contact with the front lower end of the lower leg part 82.

In this way, the feet 9 of the doll body 2 can bend in the same way as human feet, making it possible to make the doll body 2 assume a pose that realistically reproduces the feeling of pushing off the ground.

As described above, this embodiment improves the flexibility of the lower body of the doll body 2, making it possible to realize a variety of poses that were previously not possible.

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

(Variation 1)
In the above embodiment, an example of a configuration in which the left and right first swing links 110 are integrally connected via the link support portion 104 is shown, but the left and right first swing links 110 may not be connected to each other, but may be connected to the link support portion 104 separately.

Specifically, the first groove portion 106 and the second groove portion 107 are not holes that penetrate the link support portion 104 from left to right, but are literally grooves recessed into the left and right side surfaces. Then, protrusions that engage with the grooves are provided on the left and right first swing links 110, respectively, instead of the left and right connecting protrusions 113 and the left and right connecting holes 114. Then, the left and right first swing links 110 may be assembled in a configuration that connects them so that they can swing along the left and right surfaces of the link support portion 104, respectively.

(Variation 2)
In the above embodiment, the connecting structure between the upper leg part 81 and the lower leg part 82 makes it possible to realize a state in which the lower leg part 8 of the leg 6 is twisted left and right. A similar connecting structure can also be applied to the configuration of the forearm part of the arm 5.

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

In this configuration, the arm 5 has an upper arm 51 and a forearm 53 that is connected to the upper arm 51 by an elbow joint 52 so as to be able to swing (rotate) relative to the upper arm 51. The forearm 53 has an upper arm part 54 and a hand part 55.

The upper arm part 54 has an inclined surface 541 whose normal faces diagonally downward and rearward, and a forearm rotation shaft 542 protruding from the surface in the same direction. The tip of the forearm rotation shaft 542 has an enlarged diameter portion.

The hand side part 55 is made up of two pieces, a right part 551 and a left part 552, which are assembled facing each other to rotatably hold the forearm rotation shaft 542 and the hand joint 56. Specifically, the hand side part 55 has an inclined surface 553 whose normal faces diagonally upward and forward, and a forearm rotation bearing 554 into which the forearm rotation shaft 542, which penetrates into the internal space along the same direction, is rotatably fitted.

In other words, the connection surface between the upper arm part 54 and the hand part 55 (the boundary surface between the inclined surface 541 and the inclined surface 553) forms a front-rear inclined surface that inclines in the front-rear 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-rear inclined surface. Therefore, similar to the relative twisting between the upper leg part 81 and the lower leg part 82 in the lower leg part 8 in the above embodiment, it is possible to realize a relative twisting between the upper arm part 54 and the hand part 55 in the forearm part 53.

(Variation 3)
Although the doll body 2 has been given as an example of a movable toy, the movable toy to which the joint structure 100 of the present invention can be applied is not limited to human figures, and can be applied to the joints of animals (whether real or imaginary). In this case, although the joint structure 100 is used as a hip joint in the above embodiment, the joint structure 100 may be used as a neck joint in the case of a two-headed character.

Description of the Preferred Embodiment 2: Doll body 4: Torso 5: Arm 6: Leg 7: Thigh 8: Lower leg 9: Foot 11: Knee interior part 43: Waist 53: Forearm 54: Upper arm part 55: Hand part 71: Upper thigh part 72: Lower thigh part 74: Fourth swing axis 77: Fifth swing axis 81: Upper leg part 82: Lower leg part 85: Fifth swing bearing 87: Lower leg rotation axis 88: Lower leg rotation bearing hole 91: Heel 92: Central part 93: Connecting part 94: Toe 100: Joint structure 101: Waist base 104: Link support part 105: First swing axis 106: First groove 107: Second groove 110: First swing link 111: First swing bearing 112: Long hole portion 115: Connection portion (second rocking bearing)
Reference Signs List 120: Second swing link 121: Second swing shaft 123: Third swing bearing 130: Thigh joint 134: Third swing shaft 180: Foot joint 181: Sixth swing shaft 541: Inclined surface 542: Forearm rotation shaft 553: Inclined surface 554: Forearm rotation bearing 913: Sixth swing bearing 923: Eighth swing bearing 924: Ninth swing bearing 931: Seventh swing shaft 932: Eighth swing shaft 941: Ninth swing shaft F1: Connection surface

One aspect of the present invention is a joint structure for a doll body in which legs can swing in a predetermined swing direction relative to a waist base, the joint structure comprising a first swing link connected to the waist base and swingable in the swing direction relative to the waist base, and a second swing link having one end connected to the first swing link and the other end connected to the leg and swingable in the swing direction relative to the first swing link, the joint structure being capable of pulling out the other end from the waist in stages or inserting it in stages by multi-stage swinging caused by a first swing in which the first swing link swings relative to the waist base and a second swing in which the second swing link swings relative to the first swing link. Another aspect of the present invention is a movable structure for a doll body, the movable structure having an upper part and a lower part, the connecting surface between the upper part and the lower part having an inclined surface inclined from above to below, the lower part being connected to the upper part so as to be rotatable along the inclined surface.

Claims (10)

A joint structure for a doll body in which the legs can swing in a predetermined swing direction relative to the waist base,
a first swing link connected to the waist base body and swingable in the swing direction relative to the waist base body;
a second swing link having one end connected to the first swing link and the other end connected to the leg portion and capable of swinging in the swing direction relative to the first swing link;
a first swing in which the first swing link swings relative to the waist base body, and a second swing in which the second swing link swings relative to the first swing link, thereby enabling the other end to be pulled out or inserted in stages from the waist. The joint structure according to claim 1, wherein the other end can be displaced to a position above and a position below the one end by the multi-stage swing when viewed from the front of the doll body. The first swing link has an arc-shaped long hole portion aligned along the swing direction,
The first swing link is located outside the waist base body in the front view,
The first swing link has a connecting portion with the one end portion on a side surface on the waist base body side,
The second swing link is located between the waist base body and the first swing link, and the other end is connected to the leg through the long hole.
The joint structure according to claim 1 or 2. The waist base body has an arc-shaped groove portion along the swing direction on a side surface on the first swing link side,
The first swing link has a protrusion that fits into the groove on a surface facing the waist base body.
A joint structure according to any one of claims 1 to 3. The waist base body has an arc-shaped groove portion along the swing direction on a side surface on the first swing link side,
The first swing link has a protrusion that fits into the groove on a surface facing the waist base body,
the first swing range is determined within a range in which the protrusion can move relative to the groove,
The second swing range is determined within a movable range of the other end portion relative to the long hole portion.
The joint structure according to claim 3. The leg includes a thigh and a lower leg.
The thigh 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 be swingable in the swing direction relative to the upper part.
A joint structure according to any one of claims 1 to 5. The lower leg portion has an upper leg part and a lower leg part,
a connecting surface between the lower leg upper part and the lower leg lower part has an inclined surface inclined in a front-rear direction from a front upper side to a rear lower side,
The lower leg part is rotatably connected to the upper leg part along the inclined surface.
The joint structure according to claim 6. The leg has a foot at a lower end,
The foot portion is
The heel and
The center and
A connecting part that connects the center portion to the heel portion in a pullable manner;
A toe portion connected to the central portion so as to be swingable in the up and down direction;
having
A joint structure according to any one of claims 1 to 7. A doll body having a joint structure according to any one of claims 1 to 8. The upper arm,
A forearm portion swingably connected to the upper arm portion;
Equipped with
the forearm portion has an upper arm part and a hand part,
a connecting surface between the upper arm side part and the hand side part has a front-rear inclined surface that is inclined in the front-rear direction from the upper arm side on the rear side of the body of the doll body to the hand side on the front side of the body,
The hand side part is rotatably connected to the upper arm side part along the front-rear inclined surface,
10. The doll body according to claim 9.

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