Model toy and movable structure
By incorporating a movable shaft with dual rotatable components, the model toy achieves enhanced joint mobility and range of motion, addressing the limitations of traditional model toys and enabling more natural and varied movements.
Patent Information
- Application Number
- JP2023173146
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-10-04
- Publication Date
- 2025-04-16
- Estimated Expiration
- 2043-10-04
AI Technical Summary
Existing model toys face limitations in achieving natural human-like movements due to restricted joint mobility and the need for a large number of joints and members, which complicates the realization of a wide range of motions.
The implementation of a novel structure featuring a movable shaft with a first and second rotatable movable shaft connected to multiple parts, allowing for increased joint mobility and range of motion by enabling parts to move in predetermined directions.
This solution effectively expands the range of motion in model toys, allowing for more natural and varied movements with fewer joints and members, thereby enhancing the realism and versatility of the toys.
Smart Images

Figure 2025063725000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to a model toy and a movable structure. [Background technology]
[0002] To realize movements and poses similar to those of humans and animals, toy dolls (toy models) include various joints and movable parts. These mechanisms enable a variety of poses. However, providing a toy doll with the same number of joints as a human requires a large number of parts, and even in sophisticated toy dolls, the number is limited, making this difficult to achieve. Therefore, in order to realize the movements and poses described above, it is important to construct a toy doll with fewer joints and parts while expanding the range of motion of the joints and the parts connected to them. Expanding the range of motion allows for greater freedom of movement and a variety of poses. Patent Document 1 proposes a quadruped animal doll with a joint structure that enables realistic movements similar to those of real animals. [Prior art documents] [Patent documents]
[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-17264 Summary of the Invention [Problem to be solved by the invention]
[0004] To achieve natural movements like those of human limbs, it is desirable for them to be able to rotate in various directions. However, by providing joints such as the neck, shoulder, hip, and waist inside the body, just like in humans, it is possible to achieve natural movements of the parts connected to those joints, but the range of motion is limited by the adjacent parts. Therefore, in order to expand the range of motion, it is important to ensure space between adjacent parts.
[0005] The present invention provides a mechanism for realizing a novel structure for expanding the range of motion in, for example, a model toy. [Means for solving the problem]
[0006] The present invention is characterized in that, for example, a model toy includes a part group including a plurality of parts, and a movable shaft provided inside the part group and connecting at least some of the plurality of parts, the movable shaft including a first movable shaft connected to a first part of the plurality of parts and rotatable, and a second movable shaft connected to a second part of the plurality of parts and rotatable.
[0007] The present invention is also characterized in that, for example, a movable structure includes a part group including a plurality of parts, and a movable shaft provided inside the part group and connecting at least some of the plurality of parts, the movable shaft including a first movable shaft connected to a first part of the plurality of parts and rotatable, and a second movable shaft connected to a second part of the plurality of parts and rotatable. [Effects of the Invention]
[0008] According to the present invention, a novel structure for expanding the range of motion can be realized. [Brief explanation of the drawings]
[0009] [Figure 1] 1A and 1B are diagrams showing an example of a front exterior view and a side exterior view of a model toy according to an embodiment; [Figure 2] 1A is a diagram showing a side view of an external appearance of a model toy according to one embodiment, and FIG. 1B is a diagram showing an exploded perspective view of an arm portion. [Figure 3] 1 is a diagram showing a configuration of an elbow joint of a model toy according to an embodiment. [Figure 4] 10A to 10C are diagrams illustrating the operation of an elbow joint of a model toy according to one embodiment. [Figure 5] 1A and 1B are diagrams showing (a) an elbow joint, (b) a part of an arm, and (c) a connection of the elbow joint to the arm of a model toy according to one embodiment. [Figure 6]FIG. 2 is a side cross-sectional view of an arm of the model toy according to one embodiment. [Figure 7] 10A to 10C are diagrams showing examples of the movements of the arms of the model toy according to one embodiment. DETAILED DESCRIPTION OF THE INVENTION
[0010] Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings. Note that the following embodiments do not limit the scope of the invention as claimed, and not all combinations of features described in the embodiments are necessarily essential to the invention. Two or more of the features described in the embodiments may be arbitrarily combined. Furthermore, the same reference numerals are used for the same or similar components, and redundant explanations will be omitted.
[0011] <Appearance of the model toy> A first embodiment of the present invention will be described below. First, an example of the external configuration of a model toy 100 according to this embodiment will be described with reference to Fig. 1. Fig. 1(a) shows the external front view of the model toy 100. Fig. 1(b) shows the external side view of the model toy 100. Note that the up / down, left / right, and front / back arrows indicate the orientation of the model toy in the drawing, and this also applies to the other drawings.
[0012] The model toy (doll body) 100 includes a head 101, an upper body 102, arms 103a and 103b, and legs 104a and 104b. The model toy 100 is a movable model toy such as a movable figure, and each part can be moved within a limited range created by its relationship with other members. The head 101, which is a first part, is connected to the upper body 102, which is a second part, by a spherical connecting member (hereinafter also referred to as a ball joint). Arms 103, including a right arm 103a and a left arm 103b, are further connected to the upper body 102 by a spherical connecting member. Legs, including a right leg 104a and a left leg 104b, are connected to the lower part of the upper body 102.
[0013] In the following, a structure of an arm joint including an elbow joint and a wrist joint of an arm will be described as a movable structure (movable structure) according to this embodiment. However, this is not intended to limit the present invention, and the movable structure described below can be applied not only to an arm joint but also to other joints, for example, leg joints including a knee joint and ankle joint, neck joint, waist joint, and other joints.
[0014] <Arm configuration> Next, the detailed configuration of the arm 103a including the arm joint of the model toy 100 according to this embodiment will be described with reference to Figure 2. Figure 2(a) shows a side view of the model toy 100. Figure 2(b) shows an exploded perspective view of a group of parts including multiple parts that make up the arm 103a. Figure 2(a) is the same as Figure 1(b), so its explanation will be omitted. The configuration of the arm 103b is similar to that of the arm 103a, so its explanation will be omitted.
[0015] As shown in Figure 2(b), the arm 103a is made up of parts 201 to 213 and is rotatably connected to the upper body 102. Parts 201 to 203 form a movable axis that serves as the base of the elbow joint. Part 204 forms a shoulder joint, and parts 205 and 206 form a wrist joint.
[0016] Parts 201a and 201b are assembled so as to cover parts 201 and 204 from the outside. Part 204 is rotatably connected to parts 201a and 201b. Part 211 has a hollow portion inside, into which parts 201 and 202 constituting the elbow joint are inserted. Part 212 has a hollow portion inside, into which an insertion portion formed at the bottom of part 202 is inserted. This insertion portion is further inserted into part 203, which forms part of the movable shaft inside part 212. Furthermore, part 213 is connected to part 212 from the bottom in the figure. Part 203 has a cylindrical recess formed at the bottom, into which a wrist joint made up of parts 205 and 206 is inserted. Parts 207 and 208 are connected to the neck joint.
[0017] Parts 201 and 202 are rotatably connected to form a first movable axis of the elbow joint. Part 203 is rotatably connected to part 212 to form a second movable axis of the elbow joint. As described above, according to this embodiment, the elbow joint, which is a single joint, is configured with two movable axes. This allows for an expanded range of motion. Furthermore, according to this embodiment, in order to expand the range of motion, parts 211 and 212 connected to the movable axes are connected so as to be movable in a predetermined direction, for example, the vertical direction. This allows parts 211 and 212 to be operated so as to provide a gap between them and rotated by the first and second movable axes, thereby providing an expanded range of motion. A detailed configuration will be described later.
[0018] <Detailed structure of the elbow joint> Next, the detailed configuration of the elbow joint (arm joint) of the model toy 100 according to this embodiment will be described with reference to Fig. 3. Fig. 3(a) shows an exploded view of the parts that make up the first movable axis of the elbow joint. Fig. 3(b) and (c) show the assembled configuration of each part.
[0019] As shown in Figure 3(a), part 201 has a cylindrical connecting part 301. Part 202 has a ring-shaped connecting part 302 that rotatably receives connecting part 301, and a rod-shaped insertion part 303. By connecting connecting parts 301 and 302, the first movable axis of the elbow joint can be formed.
[0020] As shown in Figure 3(b), part 203 has a cylindrical recess 304 and a cylindrical connecting portion 305. By inserting insertion portion 303 into recess 304, part 203 is connected to parts 201 and 202. Part 203 is rotatably connected to part 211, which constitutes part of arm 103a, via connecting portion 305. This forms a second movable axis of the elbow joint.
[0021] 3(c) shows a movable shaft that connects parts 201 to 203. In this movable shaft, connecting portions 301 and 305 function as a first movable shaft and a second movable shaft, respectively. Each movable shaft can rotate in the front-to-rear direction of the model toy 100.
[0022] <Movement of the movable axis> Next, the operation of the movable axis (elbow joint) according to this embodiment will be described with reference to Figure 4. Figure 4(a) shows the movable axis before operation, Figure 4(b) shows the state when the first movable axis is operated, and Figure 4(c) shows the state when the second movable axis is operated. In Figures 4(a) to 4(c), parts 211, 212, and 213 that are assembled to cover the movable axis are indicated by dotted lines.
[0023] FIG. 4(b) shows a state in which the first movable axis is rotated from the movable axis before operation shown in FIG. 4(a). The first rotation axis is achieved by rotating part 201 toward the front of the model toy 100 relative to part 202. As shown in FIG. 2(b), part 201 is covered with parts 210a and 210b, and part 204, which functions as a shoulder joint, is connected to the end of part 201. Therefore, rotation about the first movable axis can realize the movement of bending arm 103a.
[0024] Fig. 4(c) shows the state in which the second movable axis is rotated from the movable axis state shown in Fig. 4(b). The second movable axis is rotated by rotating the connecting portion 305 of the part 203, which is rotatably connected to the part 212. Therefore, the parts 201 and 202 connected to the part 203 also rotate accordingly. Therefore, the rotation about the second movable axis can realize the operation of further bending the arm 103a.
[0025] <Arm movement configuration> The movable configuration of arm 103a according to this embodiment will be described below with reference to Figures 5 and 6. Figure 5(a) shows a rear view of the movable shaft, Figure 5(b) shows a bottom view of part 212, and Figure 5(c) shows a bottom view showing the movable shaft connected to part 212. Figures 6(a) and 6(b) show side cross-sectional views of arm 103a. Note that the configuration of arm 103b is similar to that of arm 103a, so a description thereof will be omitted.
[0026] 5(a), the movable shaft of the arm 103a according to this embodiment has cylindrical connecting portions 501 and 502 protruding to the left and right on the first and second movable shafts, and connecting portions 505 and 506. The connecting portions 501 and 502 are connected to the part 212, and the connecting portions 505 and 506 are connected to the part 211. The following describes the assembly configuration of the connecting portions 501 and 502 to the part 212.
[0027] As shown in FIG. 5(b), part 212 has cutouts 503 and 504 formed therein to receive connecting portions 501 and 502. Cutouts 503 and 504 are each formed to have the lengths indicated by the arrows. In other words, connecting portions 501 and 502 are connected so as to be movable in the up and down direction within the range indicated by the arrows. Note that the assembly configuration of connecting portions 505 and 506 to part 211 is similar, and therefore description thereof will be omitted. Cutouts 503 and 504 formed in part 212 correspond to the second cutout, and a cutout (not shown) formed in part 211 corresponds to the first cutout.
[0028] 5(c) shows the state in which parts 211 and 212 are assembled to the movable shaft. As shown in the figure, connecting parts 501 and 502 are assembled to cutout parts 503 and 504, respectively, but it can be seen that there is extra space in cutout parts 503 and 504. In other words, connecting parts 501 and 502 are not fitted all the way into cutout parts 503 and 504, and there is space up to the innermost parts. Therefore, by utilizing this space, parts 211 and 212 can move up and down relative to the movable shaft.
[0029] Fig. 6(a) shows a first state in which parts 211 and 212 are in contact with each other. On the other hand, Fig. 6(b) shows a transition to a second state in which parts 211 and 212 are separated by moving parts 211 and 212 in the directions of the arrows. In the second state, gaps are provided between parts 210 and 211 and between parts 211 and 212, which has the effect of expanding the range of motion of the first movable axis and the second movable axis.
[0030] In addition, the arm 103a according to this embodiment has an elbow joint having a first movable axis and a second movable axis, as well as a wrist joint formed by a third movable axis. The wrist joint is formed by connecting parts 205 and 206. Specifically, the wrist joint is formed by rotatably inserting the rod-shaped insertion part of part 206 into the cylindrical recess of part 205. The insertion part serves as the axis of rotation, and is formed to be a substantially horizontal axis of rotation in the front-to-rear direction of the model toy 100. This allows for a wider range of motion than when the insertion part is inserted obliquely at a predetermined angle rather than horizontally.
[0031] <Example of operation> An example of the movement of the arm 103a according to this embodiment will be described with reference to Fig. 7. In Fig. 7, the arm 103a is shown shaded.
[0032] As shown in Figure 7, the arm 103a of the model toy 100 can be bent significantly by moving the first and second movable shafts. Furthermore, the hand can be bent by moving the third movable shaft at the wrist joint. Therefore, as shown in the figure, the model toy 100 can perform a motion similar to "resting one's chin on one's hand."
[0033] As described above, the model toy according to this embodiment includes a part group including a plurality of parts, and a movable shaft provided inside the part group and connecting at least some of the plurality of parts. The movable shaft includes a first movable shaft connected to a first part of the plurality of parts, and a second movable shaft connected to a second part of the plurality of parts. In this way, this embodiment can provide a mechanism for realizing a novel structure for expanding the range of motion in a model toy.
[0034] <Modification> The present invention is not limited to the above-described embodiments, and various modifications and variations are possible within the scope of the invention. In the above-described embodiments, an example in which the movable structure is applied to an arm joint including an elbow joint has been described, but this is not intended to limit the present invention, and the structure may be used in other parts. For example, the structure may be used in leg joints including a knee joint, or in joints such as a shoulder joint and a waist joint.
[0035] Furthermore, although an example of a model toy has been described, the shape of the model toy (doll body) is not particularly limited and includes various shapes such as people, animals, robots, insects, dinosaurs, imaginary life forms, etc. Furthermore, the shape of the model toy is not particularly limited as long as it has a form that includes movable parts.
[0036] <Summary of the embodiment> The above embodiments disclose at least the following model toy and movable structure. (1) A model toy, a part group including a plurality of parts; a movable shaft provided inside the group of parts and connecting at least some of the plurality of parts; Equipped with The movable shaft is a rotatable first movable shaft connected to a first part of the plurality of parts; a second movable shaft connected to a second part of the plurality of parts and rotatable; A model toy comprising: (2) the first movable shaft is coupled to a first cutout portion provided in the first part so as to be movable in a predetermined direction; The model toy described in (1) is characterized in that the second movable shaft is connected to a second cutout portion provided in the second part so as to be movable in the predetermined direction. (3) The model toy described in (2) is characterized in that the first movable shaft and the second movable shaft, by moving in the predetermined direction, transition from a first state in which the first part and the second part are in contact with each other to a second state in which the first part and the second part are separated from each other. (4) The model toy described in (3) is characterized in that the range of motion of the first movable axis and the range of motion of the second movable axis are wider in the second state than in the first state. (5) The model toy according to any one of (1) to (4), wherein the first movable axis includes two parts, and the two parts are rotatably connected to each other. (6) The model toy according to any one of (1) to (5), wherein the second movable axis includes a connecting portion that is rotatably connected to the second part. (7) the group of parts forms an arm of the model toy, The model toy according to any one of (1) to (6), wherein the first movable shaft and the second movable shaft form an elbow joint. (8) The model toy described in (7) is characterized in that the movable axis further includes a third movable axis that forms a wrist joint. (9) the third movable shaft includes a third part having a cylindrical recess and a fourth part having a rod-shaped insertion portion, The model toy according to (8), wherein the third part and the fourth part are rotatably connected by inserting the inserting portion into the recess. (10) The model toy described in (9) is characterized in that the insertion part serves as a horizontal rotation axis at the wrist joint. (11) the group of parts forms legs of the model toy; The model toy according to any one of (1) to (6), wherein the first movable shaft and the second movable shaft form a knee joint. (12) A movable structure, a part group including a plurality of parts; a movable shaft provided inside the group of parts and connecting at least some of the plurality of parts; Equipped with The movable shaft is a rotatable first movable shaft connected to a first part of the plurality of parts; a second movable shaft connected to a second part of the plurality of parts and rotatable; A movable structure comprising: [Explanation of symbols]
[0037] 100: Model toy, 101: Head, 102: Upper body, 103a, 103b: Arms, 104a, 104b: Legs
Claims
1. A model toy, A part group including a plurality of parts; a movable shaft provided inside the group of parts and connecting at least some of the parts; Equipped with The movable shaft is a first movable shaft connected to a first part among the plurality of parts and capable of rotating; a second movable shaft connected to a second part of the plurality of parts and rotatable; A model toy comprising:
2. the first movable shaft is connected to a first cutout portion provided in the first part so as to be movable in a predetermined direction; The model toy according to claim 1 , wherein the second movable shaft is connected to a second cutout portion provided in the second part so as to be movable in the predetermined direction.
3. 3. The model toy according to claim 2, characterized in that, by moving in the predetermined direction, the first movable shaft and the second movable shaft transition from a first state in which the first part and the second part are in contact with each other to a second state in which the first part and the second part are separated from each other.
4. 4. The model toy according to claim 3, wherein a movable range of the first movable shaft and a movable range of the second movable shaft are expanded in the second state compared to the first state.
5. The model toy according to claim 1 , wherein the first movable shaft includes two parts, and the two parts are rotatably connected to each other.
6. The model toy according to claim 5 , wherein the second movable shaft includes a connecting portion that is rotatably connected to the second part.
7. the group of parts forms an arm of the model toy, 7. The model toy according to claim 1, wherein the first movable shaft and the second movable shaft form an elbow joint.
8. 8. The model toy according to claim 7, wherein the movable shaft further comprises a third movable shaft forming a wrist joint.
9. the third movable shaft includes a third part having a cylindrical recess and a fourth part having a rod-shaped insertion portion, The model toy according to claim 8 , wherein the third part and the fourth part are rotatably connected to each other by inserting the insertion part into the recess.
10. 10. The model toy according to claim 9, wherein the insertion portion serves as a horizontal rotation axis at the wrist joint.
11. the group of parts forms a leg portion of the model toy, 7. The model toy according to claim 1, wherein the first movable shaft and the second movable shaft form a knee joint.
12. A movable structure, A part group including a plurality of parts; a movable shaft provided inside the group of parts and connecting at least some of the parts; Equipped with The movable shaft is a first movable shaft connected to a first part among the plurality of parts and capable of rotating; a second movable shaft connected to a second part of the plurality of parts and rotatable; A movable structure comprising:
Citation Information
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