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Patexia Research
Issue Date Oct 14, 2021
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Patent Application - WALKING TOY > Claims

  • 1. A walking toy having: an upper body part including a torso; and two legs connected to the torso, in which if the torso is made to move forward in the state where a contact surface of at least one leg contacts a walking surface, walking motion is performed by the legs, the walking toy comprising: a crank member rotatably supported in the torso and having a pair of crank eccentric shafts positioned eccentrically from a rotational axis of the crank member, whereinthe crank eccentric shafts are arranged so as to have opposite phases from each other with respect to the rotational axis,each of the legs has a motion member giving rotational force to the crank member when the torso moves forward,each of the motion members has an eccentric shaft connecting part pivotably connected to the corresponding crank eccentric shaft, a torso cooperation part cooperating with the torso, and an action part on which force received from the walking surface act,grooves are formed at one of the torso cooperation parts of the motion members and the torso, and projections sliding in the grooves and guided by the grooves are formed at the other of the torso cooperation parts and the torso,the grooves are configured so that the projections can reciprocate in the grooves corresponding to rotational motion of the crank member, andif the torso is made to move forward to make the action part of the motion member of the one leg contacting the walking surface move rearward relative to the torso, the motion member of the one leg moves to thereby impart rotational force to the crank member by the motion member due to the projection being limited in movement in the groove and, the other leg is made to move forward in the state separated from the walking surface due to rotation of the crank member and then is made to contact the walking surface.
    • 10. The walking toy according to claim 1, wherein each of the legs further has an upper leg member and a lower leg member, the upper part of the upper leg member is pivotably connected to the torso and the lower leg member is pivotably connected to a lower part of the upper leg member, andthe action part of each of the motion members is connected to the corresponding lower leg member at a position different from the connecting part to the upper leg members.
      • 11. The walking toy according to claim 10, wherein the action part of each of the motion members is pivotably connected to the corresponding lower leg member at a positions rearward from the connecting part to the upper leg members.
    • 12. The walking toy according to claim 1, wherein the motion members are straight rods, and the eccentric shaft connecting part is positioned between the torso cooperation part and the action part.
    • 13. The walking toy according to claim 1, wherein the contact surface of each of the legs is formed in an arc shape sticking out toward the walking surface in the front-rear direction.
    • 14. The walking toy according to claim 1, wherein the walking toy further comprises a walking aid attached to the upper body part, and the walking aid has an auxiliary contact part continuously contacting the walking surface at a position different from the legs while the walking motion is being performed.
      • 15. The walking toy according to claim 14, wherein the auxiliary contact parts are wheels.
      • 16. The walking toy according to claim 14, wherein the torso, the legs, and the crank member are configured so that the walking motion is continuously performed when the angle, in the front-rear direction, of the axis of the torso with respect to the walking surface is within a certain range, andthe walking aid holds the torso so that the angle of the axis of the torso with respect to the walking surface is maintained within the certain range.
      • 17. The walking toy according to claim 14, wherein the torso, the legs, and the crank member are configured so that the lower leg member of the other leg which had been moved forward in a state separated from the walking surface contacts the ground after reaching the forward most position, if the angle, in the front-rear direction, of the axis of the torso with respect to the walking surface is within a certain range, andthe walking aid holds the torso so that the angle of the axis of the torso with respect to the walking surface is maintained within the certain range.
      • 18. The walking toy according to claim 14, wherein the walking aid has an attachment part and the upper body part has a receiving part, and the walking aid is detachably attached with respect to the upper body part by the attachment part being detachably attached with respect to the receiving part.
        • 19. The walking toy according to claim 18, further comprising a phase detector detecting a rotational phase of the crank member, wherein the phase detector has a detected part provided at the crank member and a detector arranged at the attachment part so as to face the detected part,the detected part is formed so that an outer circumferential surface thereof changes in distance from the rotational axis of the crank member in the circumferential direction of the crank member, andthe detector outputs a signal corresponding to the distance to the outer circumferential surface of the detected part.
          • 20. The walking toy according to claim 19, wherein the detector is an optical sensor detecting a distance to an object, the receiving part is a receiving hole formed in the torso,the attachment part is configured so as to be inserted in the receiving hole, andthe detector is arranged at the attachment part so that the detector faces the detected part in the torso when the attachment part is inserted into the receiving part.
  • 2. A walking toy having: an upper body part including a torso: and two legs connected to the torso, in which if the torso is made to move forward in the state where a contact surface of at least one leg contacts a walking surface, walking motion is performed by the legs, the walking toy comprising: a crank member rotatably supported in the torso and having a pair of crank eccentric shafts positioned eccentrically from a rotational axis of the crank member, whereinthe crank eccentric shafts are arranged so as to have opposite phases from each other with respect to the rotational axis,each of the legs has a motion member giving rotational force to the crank member when the torso moves forward,each of the motion members has an eccentric shaft connecting parts pivotably connected to the corresponding crank eccentric shafts, a torso cooperation parts cooperating with the torso, and an action part on which force received from the walking surface act,support point mechanisms making the torso cooperation parts of the motion members function as points of support in the motion members are formed at the torso cooperation parts of the motion members and the torso, andif the torso is made to move forward to make the action part of the motion member of the one leg contacting the walking surface move rearward relative to the torso, the motion member of the one leg is pivoted using the upper part of that motion member as a point of support, and a rotational force is applied to the crank member by the motion member of the pivoting one leg and, the other leg is made to move forward in the state separated from the walking surface due to rotation of the crank member and then is made to contact the walking surface.
    • 3. The walking toy according to claim 2, wherein the support point mechanisms include guide mechanisms guiding the torso cooperation parts of the motion members with respect to the torso.
      • 6. The walking toy according to claim 3, wherein the guide mechanisms guide the torso cooperation parts with respect to the torso in a direction where the torso forms an angle with respect to the walking surface when the torso is in a state standing upright with respect to the walking surface.
      • 8. The walking toy according to claim 3 wherein the guide mechanisms have grooves provided at one of the torso cooperation parts and the torso, and projections provided at the other of the torso cooperation parts and the torso, andthe projections slide in the grooves whereby the torso cooperation parts are guided with respect to the torso.
  • 4. A walking toy having: an upper body part including a torso: and two legs connected to the torso, in which if the torso is made to move forward in the state where a contact surface of at least one leg contacts a walking surface, walking motion is performed by the legs, the walking toy comprising: a crank member rotatably supported in the torso and having a pair of crank eccentric shafts positioned eccentrically from a rotational axis of the crank member, whereinthe crank eccentric shafts are arranged so as to have opposite phases from each other with respect to the rotational axis,each of the legs has a motion member giving rotational force to the crank member when the torso moves forward,each of the motion members has an eccentric shaft connecting part pivotably connected to the corresponding crank eccentric shafts, a torso cooperation parts cooperating with the torso, and an action part on which force received from the walking surface act,movement limiting mechanisms limiting the range by which the torso cooperation parts of the motion members can move with respect to the torso are formed at the torso cooperation parts of the motion members and the torso, andif the torso is made to move forward to make the action part of the motion member of the one leg contacting the walking surface move rearward relative to the torso, the motion member of the one leg moves to apply rotational force to the crank member by the motion member due to the range of possible movement of the torso cooperation part being limited by the movement limiting mechanism, and, the other leg is made to move forward in a state separated from the walking surface due to rotation of the crank member and then contacts the walking surface.
    • 5. The walking toy according to claim 4, wherein the movement limiting mechanisms include guide mechanisms guiding the torso cooperation parts with respect to the torso.
      • 7. The walking toy according to claim 5, wherein the guide mechanisms guide the torso cooperation parts with respect to the torso in a direction where the torso forms an angle with respect to the walking surface when the torso is in a state standing upright with respect to the walking surface.
      • 9. The walking toy according to claim 5 wherein the guide mechanisms have grooves provided at one of the torso cooperation parts and the torso, and projections provided at the other of the torso cooperation parts and the torso, andthe projections slide in the grooves whereby the torso cooperation parts are guided with respect to the torso.
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