JP5797244B2 - Joint structure of doll body - Google Patents

Description

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

As a conventional doll body, a plastic model (hereinafter referred to as a plastic model) such as a robot is known. Such a plastic model is provided with a plurality of joints so that a user can freely determine a pose. A doll body having a variety of joints has been developed in order to freely configure arms and legs that are coupled via joints.

For example, the doll body described in Patent Document 1 includes a spherical joint shaft and a connecting body having a fitting recess that can be fitted to the joint shaft.

Moreover, the doll body described in Patent Document 2 includes a locking projection biased by a spring at the lower end of the thigh member. On the other hand, a circular boss centered on the rotation center of the crus member is provided at the upper end of the crus member, and a plurality of engaging recesses are formed in the circular boss. And the doll body fixes the joint by making the latching protrusion press-contact the engagement recessed part of arbitrary places.

JP-A-6-327841 JP 2001-74030 A

However, in the conventional doll body as described above, when the arms and legs are rotated around the joints, the arms and legs move in a simple circle around the joints. Move separately. For this reason, unlike the movements of arms and legs in humans and the like, there is a problem that it is not genuine and looks bad.

Therefore, the present invention has been made in view of the above-described problems, and is a doll body that can perform an action close to a human when an arm or a leg is moved, and can take a genuine and good-looking posture. An object is to provide a joint structure.

The joint structure of a doll body according to the present invention is a joint structure of a doll body that connects a first member and a second member so as to be relatively rotatable, and the first member and the second member can be rotated. A joint body supported on the first member, one end slidably provided on the first member, the other end pivotably provided on the joint body, and one end slid on the second member. A second connecting member provided at the other end of the joint body so as to be pivotable. The joint body is accompanied by rotation of at least one of the first member and the second member. To rotate.

Moreover, the joint structure of the doll body of this invention WHEREIN: The said 1st connection member may have a 1st cover member. Moreover, the joint structure of the doll body of this invention WHEREIN: The said 2nd connection member may have a 2nd cover member. Moreover, the joint structure of the doll body of this invention WHEREIN: One end of the said 1st connection member may be attached to the ellipse-shaped sliding hole provided in the said 1st member. Moreover, the joint structure of the doll body of this invention WHEREIN: The end of the said 2nd connection member may be attached to the ellipse-shaped sliding hole provided in the said 2nd member. In the joint structure of the doll body according to the present invention, the first member and the second member may form a leg portion , and the joint body may form a knee portion.

  According to the joint structure of a doll body according to the present invention, it is possible to provide a joint structure of a doll body that performs an operation close to a human, can take a genuine, good-looking posture.

It is a whole perspective view of the doll body using the joint structure of the doll body of embodiment concerning this invention. It is the bone part of the arm of a doll body, (A) is a side view of the state which extended the elbow, (B) is a side view of the state which bent the elbow. It is an external view of the arm of a doll body, (A) is a side view of the state which extended the elbow, (B) is a side view of the state which bent the elbow. It is the bone part of the leg of a doll body, (A) is a side view of the state which extended the knee, (B) is a side view of the state which bent the knee. It is an external view of the leg of a doll body, (A) is a side view of the state which extended the knee, (B) is a side view of the state which bent the knee. It is a disassembled perspective view of the knee joint of a doll body. It is sectional drawing of the knee joint of the state which extended the leg. It is sectional drawing of the knee joint of the state which bent the leg.

DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the joint structure of the doll body according to the embodiment of the present invention can be applied to the doll body 1, for example. The doll body 1 includes two legs 30 and 30, a waist 40 that rotatably supports the legs 30, an upper body 50 that is rotatably supported on the waist 40 by a predetermined angle, and a rotatably supported by the upper body 50. The arm 20 has a head (not shown) rotatably supported via a neck 60 on the upper body 50, and has an elbow joint (elbow) 21 and a leg 30 of the arm 20. The elbow joint (elbow) 31 can be applied.

Based on FIG.2 and FIG.3, the joint structure 11 of the arm 20 is demonstrated. The arm 20 includes a bone portion 20A that is a structural member, and a cover portion 20B that is provided outside the bone portion 20A and has an appearance. First, the bone part 20A will be described based on FIGS. 2 (A) and 2 (B). The arm 20 is rotatably supported on the upper body 50 (see FIG. 1) by a shoulder joint 51 and can be fixed at an arbitrary angle, and is a first member between the elbow joint 21 which is a joint body and the shoulder joint 51. It has a humerus 22 and a humerus 23 which is a second member ahead (below) the elbow joint 21. In the following embodiments, a member that connects the first member and the second member so as to be relatively rotatable is referred to as a joint body.

The humerus 22 is supported by a first rotation shaft 211 provided at the elbow joint 21 so as to be rotatable with respect to the elbow joint 21 and fixed at a predetermined angle. The humerus 22 is provided with a first sliding hole 221 having an oval shape along the axial direction of the humerus 22. Further, the lower humerus portion 23 is supported by a second rotation shaft 212 provided in the elbow joint 21 so as to be rotatable with respect to the elbow joint 21 and fixed at a predetermined angle. A second sliding hole 231 having an oval shape is provided in the humerus 23 along the axial direction of the humerus 23.

One end 241 slides along the first sliding hole 221 and the other end 242 is rotatably attached to the elbow joint 21 by the third rotation shaft 213 on the humerus 22 side of the elbow joint 21. The first connecting member 24 is provided. Further, one end 251 slides along the second sliding hole 231 on the side of the humeral bone portion 23 of the elbow joint 21, and the other end 252 can be pivoted to the elbow joint 21 by the fourth pivot shaft 214. It has the 2nd connection member 25 attached.

A wrist joint 71 for attaching a hand 70 (see FIG. 1) is provided at the distal end (lower end) of the humerus 23. The wrist joint 71 is rotatably supported by a wrist rotation shaft 72 provided at the distal end of the humerus 23.

As shown in FIGS. 3A and 3B, the cover portion 20B, which is the appearance of the arm 20, has a cover corresponding to each part attached to the outside of the bone portion 20A. Specifically, an upper arm cover 26 is attached to the outer side of the humerus 22, and a lower arm cover 27 is attached to the outer side of the lower humerus 23. The upper arm cover 26 and the lower arm cover 27 are divided into a plurality of parts, and are divided into at least a front side and a rear side so that the humerus part 22 and the humerus part 23 can be attached by being sandwiched from the front and rear. An elbow cover 28 that covers the elbow joint 21, the first connecting member 24, and the second connecting member 25 is attached to the outside of the elbow joint 21. The elbow cover 28 is also divided into a plurality of parts from the viewpoint of design and attachment. In the present embodiment, the upper arm cover 26 is attached to the first connecting member 24, and the lower arm cover 27 is attached to the second connecting member 25. Accordingly, the upper cover 26 moves in the sliding direction as the first connecting member 24 slides along the first sliding hole 221, and the second connecting member 25 slides along the second sliding hole 231. The lower arm cover 26 moves in the sliding direction along with the movement.

Next, the movement when the lower humeral part 23 is rotated with respect to the humerus part 22 will be described. When the humerus 23 is rotated about the second rotation axis 212 in the direction of arrow A in FIG. 2A, the humerus 23 rotates about the second rotation axis 212 and at the same time, the humerus The second connecting member 25 whose tip is slidably inserted in the second sliding hole 231 of the portion 23 also rotates in the same direction around the fourth rotating shaft 214. At this time, one end 251 of the second connecting member 25 slides in the arrow B direction along the second sliding hole 231.

Further, when the elbow joint 21 rotates about the first rotation shaft 211 to which the humerus 22 is attached, the third rotation shaft 213 provided on the elbow joint 21 moves while rotating (hereinafter referred to as the elbow joint 21). Therefore, the first connecting member 24 having the other end 242 attached to the third rotating shaft 213 also rotates. At this time, one end 241 of the first connecting member 24 slides downward along the first sliding hole 221.

As a result, the elbow joint 21 rotates in the direction C in FIG. Further, when the bone portion 20A moves in this manner, the cover portion 20B attached to the bone portion 20A also moves in the same manner, so that the elbow cover 28 rotates (in the direction of arrow A in FIG. 3B). As a result, it is possible to perform an action close to a human being, and to take a posture that is genuine and looks good.

According to the joint structure 11 of the arm of the doll body of the present embodiment, one end 241 is provided between the elbow joint 21 and the humerus portion 22 rotatably supported by the first rotation shaft 211 of the elbow joint 21. Slides along a first sliding hole 221 provided long along the axial direction of the humerus 22, and the other end 242 is pivotally attached to the elbow joint 21. Since it provided, if the humerus part 22 is rotated with respect to the elbow joint 21, the 1st connection member 24 will rotate in conjunction with it. One end 251 is provided long along the axial direction of the humerus 23 between the elbow joint 21 and the humerus 23 supported rotatably on the second rotation shaft 212 of the elbow joint 21. Since the second connecting member 25 that slides along the second sliding hole 231 and whose other end 252 is rotatably attached to the elbow joint 21 is provided, the humerus part 23 with respect to the elbow joint 21 is provided. Is rotated, the second connecting member 25 is rotationally moved in conjunction with it.

Therefore, when the humerus 22 and the humerus 23 are rotated, the elbow joint 21 rotates and the elbow cover 28 attached to the elbow joint 21 rotates in the direction of arrow A in FIG. It can perform human-like movements and can take a posture that is genuine and looks good.

Further, when the humerus part 22 and the humerus part 23 are rotated, the elbow joint 21 rotates and the elbow cover 28 attached to the elbow joint 21 rotates in the direction of arrow A in FIG. The cover 26 and the lower arm cover 27 move toward the elbow joint 21. As the elbow joint 21 rotates, the upper arm cover 26 and the lower arm cover 27 move, so that it looks as if the movement of the human muscles is reproduced, and a human-like operation can be performed. Appearance and good appearance can be taken.

Next, based on FIG.4 and FIG.5, the joint structure 12 of the leg 30 is demonstrated. The leg 30 has a bone portion 30A that is a structural member and a cover portion 30B that is provided outside the bone portion 30A and has an appearance. First, the bone portion 30A will be described with reference to FIGS. 4 (A) and 4 (B). The leg 30 is supported on the upper body 50 (see FIG. 1) by the hip joint 52 so as to be rotatable and fixable at an arbitrary angle, and the femur as the first member between the knee joint 31 that is the joint body and the hip joint 52. Part 32 and crus bone part 33 which is the second member below knee joint 31.

The femur 32 is supported by a first rotation shaft 311 provided in the knee joint 31 so as to be rotatable with respect to the knee joint 31 and fixed at a predetermined angle. The femur 32 is provided with a first sliding hole 321 having an oval shape along the axial direction of the femur 32. Further, the lower leg bone portion 33 is supported by a second rotation shaft 312 provided in the knee joint 31 so as to be rotatable with respect to the knee joint 31 and fixed at a predetermined angle. The crus bone part 33 is provided with a second sliding hole 331 having an oval shape along the axial direction of the crus bone part 33.

One end 341 slides along the first sliding hole 321 and the other end 342 is pivotally attached to the knee joint 31 by the third pivot shaft 313 on the side of the femur 32 of the knee joint 31. The first connecting member 34 is provided. Here, the first connecting member 34 has a connecting member 34A on one end side and a connecting member 34B on the other end side, and both connecting members 34A and 34B are relatively rotatable on a rotating shaft 34C. It is connected to. In addition, one end 351 slides along the second sliding hole 331 on the crus 33 side of the knee joint 31, and the other end 352 can be rotated to the knee joint 31 by the fourth rotation shaft 314. It has the 2nd connection member 35 attached.

An ankle joint 81 for attaching the foot 80 is provided at the distal end (lower end) of the crus 33. The ankle joint 81 is rotatably supported by an ankle rotation shaft 82 provided at the distal end of the crus bone part 33. Further, the toe portion 83 at the distal end of the foot 80 is connected by a toe rotation shaft 84 so as to be rotatable in the vertical direction (the direction of arrow A in FIG. 4B).

As shown in FIGS. 5A and 5B, the cover portion 30B, which is the appearance of the leg 30, has a cover corresponding to each part attached to the outside of the bone portion 30A. Specifically, a thigh cover 36 is attached to the outside of the femur 32, and a crus cover 37 is attached to the outside of the crus 33. The thigh cover 36 and the crus cover 37 are divided into a plurality of parts, and are divided into at least an anterior side and a posterior side so that the thigh bone part 32 and the crus bone part 33 can be sandwiched from the front and rear. A knee cover 38 that covers the knee joint 31, the first connecting member 34, and the second connecting member 35 is attached to the outside of the knee joint 31. The knee cover 38 is also divided into a plurality of parts from the viewpoint of design and attachment. A foot cover 39 that covers the foot 80 and the ankle 81 is also provided. In the present embodiment, a thigh cover 36 is attached to the first connecting member 34, and a crus cover 37 is attached to the second connecting member 35. As a result, the thigh cover 36 moves in the sliding direction as the first connecting member 34 slides along the first sliding hole 321, and the second connecting member 35 slides along the second sliding hole 331. The crus cover 36 moves in the sliding direction along with the movement.

Next, the movement when the femur 32 is rotated relative to the crus 33 will be described. When the femur 32 is rotated about the first rotation axis 311 in the direction of arrow B in FIG. 4A, the femur 32 rotates about the first rotation axis 311 and at the same time, the femur The first connecting member 34 in which one end 341 is slidably inserted in the first sliding hole 321 of the portion 32 also rotates in the same direction around the third rotation shaft 313. At this time, one end 341 of the first connecting member 34 slides in the direction of the knee joint 31 along the first sliding hole 321.

Further, when the knee joint 31 rotates in the direction of arrow C in FIG. 4B around the second rotation shaft 312 to which the lower leg bone portion 33 is attached, the fourth time provided in the knee joint 31. Since the moving shaft 314 rotates, the second connecting member 35 having the other end 352 attached to the fourth rotating shaft 314 also rotates. At this time, one end 351 of the second connecting member 35 slides upward along the second sliding hole 331.

As a result, the knee joint 31 rotates in the direction B in FIG. 4B as the femur 32 rotates. In addition, since the bone portion 30A moves in this manner, the cover portion 30B attached to the bone portion 30A also moves in the same manner, so that the knee cover 38 rotates in the direction A in FIG. 5B. The front cover 361 of the thigh cover 36 is connected to the connecting member 34B on the other end side of the first connecting member 34, so that the front cover 361 is connected to the knee joint 31 when the femur 32 rotates. It can also be moved in the direction (the direction of arrow B in FIG. 5B).

Moreover, according to the joint structure 12 of the leg of the doll body of the present embodiment, between the knee joint 31 and the femur 32 that is rotatably supported by the first rotation shaft 311 of the knee joint 31, A first connecting member in which one end 341 slides along a first sliding hole 321 provided long along the axial direction of the femur 32 and the other end 342 is rotatably attached to the knee joint 31. Since 34 is provided, when the femur 32 is rotated with respect to the knee joint 31, the first connecting member 34 is rotated in conjunction with the rotation. Further, one end 351 is provided long along the axial direction of the crus bone part 33 between the knee joint 31 and the crus bone part 33 rotatably supported by the second pivot shaft 312 of the knee joint 31. Since the second connecting member 35 provided with the other end 352 is rotatably attached to the knee joint 31 while sliding along the second sliding hole 331, the crus bone part 33 with respect to the knee joint 31 is provided. Is rotated, the second connecting member 35 rotates in conjunction with the rotation.

Therefore, when the femur 32 and the crus 33 are rotated, the knee joint 31 rotates and the knee cover 38 attached to the knee joint 31 rotates in the direction of arrow A in FIG. It can perform human-like movements and can take a posture that is genuine and looks good.

Further, when the femur 32 and the crus 33 are rotated, the knee joint 31 rotates and the knee cover 38 attached to the knee joint 31 rotates in the direction of arrow A in FIG. The cover 36 and the lower leg cover 37 move toward the knee joint 31. As the knee joint 31 rotates, the thigh cover 36 and the crus cover 37 move, so that it looks as if the movement of the human muscles is reproduced, and it can perform an action closer to a human, Can take a good-looking attitude.

A modification of the leg 90 will be described with reference to FIGS. As shown in the figure, the knee joint 91 includes a connectable left knee joint portion 911 and a right knee joint portion 912, and a front knee joint portion 913 on the front surface of the left and right knee joint portions 911 and 912. The left and right knee joint portions 911 and 912 each have peripheral walls 911a and 912a along the outer periphery, and an internal space is formed by connecting the peripheral walls 911a and 912a to each other. In addition, a timing protrusion 91a, which will be described later, is provided at a predetermined position inside the knee joint 91.

The left knee joint portion 911 includes a cylindrical lower bearing portion 911b and an upper bearing portion 911c inside. The heights of both the bearing portions 911b and 911c are lower than the height of the peripheral wall 911a. The right knee joint portion 912 includes a cylindrical lower bearing portion 912b and an upper bearing portion 912c at positions facing the upper and lower bearing portions 911b and 911c of the left knee joint portion 911. The height of both bearing portions 912b and 912c is lower than the height of the peripheral wall 912a. Accordingly, when the left and right knee joint portions 911 and 912 are coupled, the lower bearing portions 911b and 912b and the upper bearing portions 911c and 912c are continuously arranged with a certain interval therebetween.

A lower cylindrical coupling member 941 is rotatably accommodated in the lower bearing portions 911b and 912b, and an upper cylindrical coupling member 942 is rotatably accommodated in the upper bearing portions 911c and 912c. The lower tubular connecting member 941 rotates integrally with the lower leg 93, and the upper tubular connecting member 942 rotates integrally with the thigh 92. The outer periphery of the lower bearing portions 911b and 912b and the outer periphery of the upper bearing portions 911c and 912c are provided in contact with each other and are partially in communication. Therefore, the lower cylindrical coupling member 941 accommodated in the lower bearing portions 911b and 912b and the upper cylindrical coupling member 942 accommodated in the upper bearing portions 911c and 912c are in contact with each other.

Both cylindrical connecting members 941 and 942 have a cylindrical shape as a whole, and both have a plurality of flat surface portions 941a and 942a on a part of the peripheral surface. Accordingly, the rotation is restricted in a state where the flat portions 941a and 942a of both the cylindrical connecting members 941 and 942 are in contact with each other. Thereby, relative rotation of the lower leg part 93 and the thigh part 92 is prevented under a predetermined force. In addition, when the rotational force more than predetermined acts, it will remove | exclude the contact state of plane part 941a, 942a, and the lower leg part 93 and the thigh part 92 will become relatively rotatable.

The crus 93 is integrally attached to the lower cylindrical connecting member 941, and the flat portion 941a of the lower cylindrical connecting member 941 is disposed on the distal end side (upper end side). In addition, since the lower leg part 93 only rotates centering on the lower cylindrical connection member 941, detailed description is abbreviate | omitted.

The lower end of the thigh 92 is integrally attached to the upper cylindrical connecting member 942, and the flat portion 942a of the upper cylindrical connecting member 942 is disposed on the distal end side (lower end side). The thigh 92 has left and right thigh bases 921 and 922 at the center, and has a front thigh cover 923 and a rear thigh cover 924 that cover the front and back of the thigh bases 921 and 922. A timing member 927 having a timing plate 95 to be described later is rotatably attached to the thigh bases 921 and 922 via a rotation member 928. That is, the left and right thigh bases 921 and 922 are pivotally supported via a thigh member formed by connecting the left and right thigh bases 921 and 922 and the rotation member 928. Moreover, it has hip joint covers 925 and 926 that sandwich the hip joint 96 at the top of the thigh 92 from the front and rear.

Here, the timing plate 95 is provided with an oblong hole 95a, and the timing protrusion 91a provided on the knee joint 91 is movably accommodated. That is, the timing protrusion 91a provided on the left knee joint portion 911 and the timing protrusion 91a provided on the right knee joint portion 912 are accommodated in the oblong hole 95a. Thereby, the knee joint 91 and the rotation member 928 are pivotally supported. Further, in an internal space formed by connecting the left and right thigh bases 921 and 922, a rotating member 928 for rotating the front thigh cover 923 and front and rear hip joint covers 925 and 926 are provided at the upper ends of the thigh bases 921 and 922. A connecting member 929 is provided for connecting to the.

Next, in a state where the legs 90 are straightened due to the knee flexion and extension, the lower cylindrical connecting member 941 and the upper cylindrical connecting member 942 are in contact with each other between the plane portion 941a and the plane portion 942a. Below the rotational force, the rotation is prevented and the straight state is maintained. Further, the timing protrusion 91 a is located at the upper end of the oblong hole 95 a of the timing plate 95.

From the upright state shown in FIG. 7, when the leg 30 is bent by rotating the crus 93 backward (see arrow A in FIG. 7), the crus 93 will rotate about the lower tubular connecting member 941. And However, since the lower tubular connecting member 941 is restricted from rotating with respect to the upper tubular connecting member 942, the lower leg 93 is integrated with the knee joint 91 and rotates about the upper tubular connecting member 942. To do.

As shown in FIG. 8, the timing protrusion 91 a moves inside the oblong hole 95 a by the rotation of the knee joint 91. When the timing protrusion 91a comes into contact with the lower end of the oval hole 95a, the knee joint 91 is prevented from rotating in a state where the knee joint 91 is bent at a predetermined angle with respect to the thigh 92.

Further, when the leg 90 is bent by rotating the lower leg 93 backward, the knee joint 91 does not rotate, so the lower leg 93 tries to rotate around the lower tubular connecting member 941. When the rotational force of the lower tubular connecting member 941 becomes a certain level or more, the flat surface portion 941a of the lower tubular connecting member 941 slides from the flat surface portion 942a of the upper tubular connecting member 942 and comes into contact with the adjacent flat surface portion 942a. . As a result, the crus 93 rotates with respect to the knee joint 91 by a certain angle. Accordingly, the rotating member 928 rotates in the direction of arrow B in FIG. 8 and pushes the front thigh cover 923 forward (see arrow C in FIG. 8).

When the lower leg portion 93 is further rotated, the flat surface portion 942a of the upper tubular connecting member 942 that is in contact with the flat surface portion 941a of the lower tubular connecting member 941 is moved to rotate by a certain angle. it can.

Further, when the knee shown in FIG. 8 is bent to move to the state where the knee shown in FIG. 7 is extended, the crus 93 is rotated in the direction of arrow D in FIG. At this time, the relative rotation of the crus 93 and the knee joint 91 is restricted by the contact between the flat portion 941a of the lower tubular connecting member 941 and the flat portion 942a of the upper tubular connecting member 942. The knee joint 91 also rotates together, and the timing protrusion 91a moves inside the oblong hole 95a.

When the timing protrusion 91a comes into contact with the upper end of the oblong hole 95a, the knee joint 91 moves the timing member 927 in the direction of arrow E in FIG. When the crus 93 is further rotated, the timing member 927 comes into contact with the left and right thigh bases 921, 922 and stops. Then, by further rotating the crus 93, the crus 93 rotates around the lower tubular connecting member 941 and returns to the upright state shown in FIG.

When the lower leg 93 is rotated to bend the knee, if the lower leg 93 is rotated more than a predetermined angle, the knee joint 91 is rotated in conjunction with it, and the front thigh cover 923 is also moved in conjunction with it. To do. Here, since the oval hole 95a is provided in the timing member 927 that connects the knee joint 91 and the thigh member so as to be relatively rotatable, the timing protrusion 91a is formed in the oval hole when the knee member 91 is rotated. Move inside 95a. Thereby, the movement timing of the front thigh cover 923 can be adjusted, and the knee joint 91 and the front thigh cover 923 can be moved at a natural timing, so that the state of muscle swell in a human can be reproduced.

The joint structure of the doll body according to the present embodiment is not limited to the above-described embodiment, and various modifications and changes are possible. That is, in the above-described embodiment, the case where the present invention is applied to the human-like doll body 1 standing upright by the two legs 30 and 30 has been exemplified. It is also possible to apply to.

10 Joint structure of doll body 20 Arm 21 Elbow joint (joint body, elbow)
211 1st rotation axis 212 2nd rotation axis 22 humerus part (1st member)
221 First sliding hole 23 Lower humerus (second member)
231 Second sliding hole 24 First connecting member 241, 251 One end 242, 252 Other end 25 Second connecting member 30 Leg 31 Knee joint 311 First rotating shaft 312 Second rotating shaft 32 Femur (first member) )
321 First sliding hole 33 Lower leg bone (second member)
331 Second sliding hole 34 First connecting member 341, 351 One end 342, 352 Other end 35 Second connecting member

Claims (6)

A joint structure of a doll that connects the first member and the second member so as to be relatively rotatable,
A joint body that rotatably supports the first member and the second member;
A first connecting member having one end slidably provided on the first member and the other end rotatably provided on the joint body;
A second connecting member having one end slidably provided on the second member and the other end rotatably provided on the joint body ;
The joint body has a doll joint structure that rotates as at least one of the first member and the second member rotates. Oite to claim 1,
The first connecting member has a doll joint structure having a first cover member. In claim 1 or claim 2 ,
The joint structure of the doll body in which the second connecting member has a second cover member. In any one of Claims 1 thru | or 3 ,
One end of the first connecting member is a joint structure of a doll body attached to an elliptical sliding hole provided in the first member. In any one of Claims 1 thru | or 4,
One end of the second connecting member is a doll joint structure that is attached to an elliptical sliding hole provided in the second member. In any one of Claims 1 thru | or 5 ,
A doll joint structure in which the first member and the second member form legs, and the joint body forms a knee.

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