JP6517759B2 - Manual running toy - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a manually traveling toy in which a toy having wheels is caused to travel by pushing away by hand.

  A traveling toy having a power source of a spiral spring type is known (Patent Document 1). This toy has a front case and a rear wheel attached to a body case formed by imitating a goldfish or the like, and has a tail fin supported swingably at the rear end of the body case. When the wound-up spring is driving force and the wheels rotate to travel, the tail fin is swung by the reciprocating power of the eccentric rotary plate. When the toy is running, in addition to the swinging of the tail fin, the tongue is raised and lowered from the mouth, and the two side fins are rocked.

Japanese Utility Model 7-37675

  In the above-mentioned toy, although the tail fin and the side fin rock with respect to the main body case, the movement of the main body case imitating a goldfish itself does not change except traveling forward. For example, in the case of a fish-shaped main body case, it is not possible to express the form of the fish swimming more realistically just by swinging the tail fin.

  Some aspects of the present invention provide a hand-running toy with more entertaining motion by causing a change in the motion of the toy body itself by the movement of the parts added to the toy body.

One aspect of the present invention is a toy body, at least one wheel projecting downward from a bottom surface of the toy body and in contact with a traveling surface and rotating about an axle, and a rear end position of the toy body in the traveling direction A rocking portion rocked about a rocking longitudinal axis supported by the rocking body and pivotally fixed to the rocking longitudinal axis, and the rotational movement of the at least one wheel is rocking of the rocking portion It is a manual traveling toy having a rotation-rocking conversion mechanism that converts it into movement. Further, according to one aspect of the present invention, there is provided a toy body, at least one wheel projecting downward from a bottom surface of the toy body and in contact with a traveling surface and rotating about an axle, and a rear end of the toy body in the traveling direction. A pivoting portion pivoted about a pivoting longitudinal axis supported at the side position and pivotally fixed to the pivoting longitudinal axis, and rotational movement of the at least one wheel of the pivoting portion The position of the longitudinal center line of the wheel in the traveling direction is set at or near the center of gravity of the total weight of the manual traveling toy. Is a manual running toy.

  In the present invention, the wheel is heavier than the rocking portion, and the position of the center of gravity of the rocking portion when the rocking portion is at a position where the rocking portion is maximally rocked in at least one side in plan view is the It can be outside the range of the width between the outer edges located at both ends of the contact surface of at least one wheel in the direction orthogonal to the traveling direction.

  In the present invention, the distance from the center of gravity of the rocking portion to the rocking vertical axis may be shorter than the distance from a position at which the total length of the rocking portion is bisected to the rocking vertical axis. it can.

  In the present invention, the at least one wheel and a part of the rotation-rocking conversion mechanism can be arranged side by side in a direction orthogonal to the traveling direction in a plan view.

  Further, in the present invention, the at least one wheel includes two wheels supported at a distance from the axle, and a part of the rotation-rocking conversion mechanism is disposed between the two wheels. Can.

  Further, according to the present invention, the contact surface of the at least one wheel can project the central portion of the width in the direction orthogonal to the traveling direction from both ends.

  Further, in the present invention, the at least one wheel includes a base material and a covering material which covers the base material to form a ground contact surface, and the covering material has a frictional force generated between the same running surface. It can be characterized by being larger than the said base material.

  Further, in the present invention, the toy body, at least one wheel projecting downward from the bottom surface of the toy body and in contact with the traveling surface and rotating about an axle, and the rear end position of the toy body in the traveling direction A pivoting portion pivotally fixed to the pivoting longitudinal axis about the pivoting longitudinal axis to be supported, and rotation for converting rotational motion of the at least one wheel into pivoting motion of the pivoting portion A rocking conversion mechanism, which is positioned on both outer sides than the end face of the at least one wheel positioned at both ends in a direction orthogonal to the traveling direction in plan view, and protrudes below the bottom surface of the toy body; And it is good also as a manually-running toy which has two side fall prevention members which do not reach to the height of the contact surface of the above-mentioned at least one wheel.

  Further, in the present invention, the toy body may have a front anti-falling member projecting downward from the bottom surface at a position on the front side of the at least one wheel in the traveling direction in plan view.

  Further, in the present invention, the toy body may have a rear-falling-preventing member projecting downward from the bottom surface at a position rearward of the at least one wheel in the traveling direction in plan view. .

  According to the present invention, it is possible to provide a manually traveling toy that moves more interestingly.

It is a bottom view of the manual traveling toy which imitated the shape of the fish concerning one embodiment of the present invention. It is a top view of a manual traveling toy. It is the rear view which looked at a manual traveling toy from the back of a run direction. It is a side view showing a wheel, a rotation-rocking conversion mechanism, a rocking drive part, and a rocking part. It is a top view which shows a wheel, a rotation-rocking conversion mechanism, a rocking drive part, and a rocking part. 6 (A) is a front view of the rocking drive unit and the rocking unit, FIG. 6 (B) is a plan view of the rocking drive unit and the rocking unit, and FIG. 6 (C) is a maximum rocking angle θ, FIG. 5 is a view schematically showing a relationship between an eccentricity amount δ1 of an eccentric cam and a center-to-center distance δ2 between a rocking vertical axis and a shaft portion. FIGS. 7A and 7B are a plan view and a side view showing a modification of the rotation-rocking conversion mechanism. It is a figure which shows the modification of the contact surface of a wheel. FIG. 9 (A) is a plan view schematically showing a manual traveling toy having three wheels, and FIG. 9 (B) is a front view showing a contact surface of the three wheels. It is sectional drawing of the wheel which used the composite material. It is a figure which shows the modification which set the rocking | swiveling vertical axis | shaft of a rocking | fluctuation part in the position shifted from the center of the width | variety of a wheel. It is a figure showing the modification which set up the rocking vertical axis of the rocking part in the position out of the range of the width of a wheel.

  Hereinafter, preferred embodiments of the present invention will be described in detail. Note that the present embodiment described below does not unduly limit the contents of the present invention described in the claims, and all the configurations described in the present embodiment are essential as the solution means of the present invention. It does not have to be.

  FIG. 1 is a bottom view of a manual traveling toy 10 in the shape of a fish, FIG. 2 is a plan view of the manual traveling toy 10, and FIG. 3 is a rear view of the manual traveling toy 10 viewed from the rear of the traveling direction D1. is there. In FIGS. 1 to 3, the manually-running toy 10 has a toy body 20 having a form such as a head of a fish, a torso, a dorsal fin, a side fin and the like, and a running surface 1 projecting below the bottom surface 20A of the toy body 20. And a rocking portion 40 supported at a position on the rear end side of the toy body 20 in the traveling direction D1.

  In FIG. 1 and FIG. 2, the manual traveling toy 10 according to the present embodiment travels in the traveling direction D <b> 1 by rotating the wheel 30 by pushing and releasing the manual traveling toy 10 by hand. As the wheel 30 rotates, the swinging portion 40 is reciprocated and rocked in the arrow A1 direction and the B1 direction. In the manual running toy 10 according to the present embodiment, the swinging unit 40 applies an external force to the toy body 20 by the reciprocating swinging motion of the swinging unit 40 (that is, the swinging unit 40 reciprocates the swinging motion) And the toy main body 20 is made to reciprocate (in the present embodiment, a reciprocating tilt movement) in the arrow A2 direction and the B2 direction in which the swing portion 40 swings. .

  That is, in this embodiment, when the wheel 30 is rotated and the swinging portion reciprocates in the A1 direction and the B1 direction by the rotation-swing conversion mechanism 50, the swinging portion 40 swings in the swinging direction. The portion 40 applies an external force to the toy body 20 (that is, the swinging portion 40 biases the toy body 20 in the direction in which the swinging portion 40 is swung), and travels the toy body 20 during traveling. It moves in A2 direction and B2 direction which crosses direction D1 (in this embodiment, it is made to incline). Thereby, the movement of the toy body 20 itself is changed by the movement of the rocking portion 40 added to the toy body 20, whereby a more interesting movement, for example, a manually-running toy that simulates a fish swimming 10 can be provided.

  The manual running toy 10 that moves in this manner is located on both sides of the width W of the wheel 30 in the D2 direction orthogonal to the running direction D1 in a plan view shown in FIG. 1 and as shown in FIG. It can have two side fall prevention members 20B and 20C which protrude by height H2 below the bottom surface 20A of 20 and do not reach height H1 (H1> H2) of the contact surface of the wheel 30.

  When the toy body 20 shown in FIG. 3 inclines in the B2 direction, the side fall prevention member 20B contacts the traveling surface 1 to restrict the inclination. Similarly, when the toy body 20 shown in FIG. 3 inclines in the A2 direction, the side fall prevention member 20C contacts the traveling surface 1 to restrict the inclination. By providing the two side fall prevention members 20B and 20C, the behavior of the toy body 20 itself is changed by the movement of the swinging portion 40 added to the toy body 20, and the running direction of the toy body 20 does not fall down. You can keep driving to D1. Further, by making the contact between the side-tilt preventing members 20B and 20C and the traveling surface 1 local to each other than the wheels 30, traveling resistance can be reduced. In order to reduce the running resistance, each of the two side-tilt preventing members 20B and 20C can be formed in a shape in which the area in surface contact with the running surface 1 is reduced, or in a point contact or line contact.

  Especially when the toy body 20 has one wheel 30 shown in FIG. 1, the front side of the wheel 30 in the traveling direction D1 in the bottom view shown in FIG. 1 (downstream, the traveling of the toy body 20 than the wheel 30) At the position of the front end side in the direction D1, it is possible to have a front anti-falling member 20D that protrudes below the bottom surface 20A shown in FIG. The protrusion amount from the bottom surface 20A of the front collapse preventing member 20D can be set to be equal to or less than the protrusion height H1 at which the wheel 30 protrudes from the bottom surface 20A. In this way, even if the toy body 20 attempts to fall forward when the toy body 20 is pushed away by hand, the forward fall preventing member 20D can contact the traveling surface 1 to regulate the forward fall of the toy body 20. Further, by making the contact between the front anti-falling member 20D and the traveling surface 1 local to other than the wheel 30, traveling resistance can be reduced. Similarly, in order to reduce the running resistance, the front-falling preventing member 20D can be formed in a shape in which the area in surface contact with the running surface 1 is reduced, or in a point contact or line contact.

  It is preferable to provide the front collapse prevention member 20D in order to prevent the toy body 20 from falling forward when the toy body 20 is pushed away by hand. However, particularly in the case where one wheel 30 shown in FIG. 1 is provided, it is replaced with the front fall prevention member 20D, or together with the front fall prevention member 20D, compared to the wheel 30 in the traveling direction D1 in a bottom view shown in FIG. At the position on the rear side (upstream side, the rear end side of the running direction D1 of the toy body 20 relative to the wheels 30), a rear-tilt preventing member may be provided which protrudes below the bottom surface 20A shown in FIG. Omitted). The back fall prevention member is useful when the longitudinal center line C2 of the wheel 30 is positioned on the front end side of the running direction D1 of the toy body 20 with respect to the gravity center position of the total weight of the manual running toy 10. The rear fall prevention member can also be formed to reduce running resistance in the same manner as the front fall prevention member 20D.

  For example, one wheel 30 shown in FIG. 1 is provided on a center line C1 which substantially bisects the width of the toy body 20 in the direction D2 orthogonal to the traveling direction D1 in FIG. The wheel 30 has a width W which is approximately bisected by the center line C1.

  The part exposed in the area | region except the back surface of the toy main body 20 is divided | segmented into the head 21, the left side part 22, and the right side part 23, for example. The left side fin 22A is provided in the left side portion 22, and the right side fin 23A and the back fin 23B are provided in the right side portion 23.

  Between the left side part 22 and the right side part 23, the dividable holding parts 24 and 25 shown in FIG. 1 and FIG. 3 are accommodated. The holding portions 24 and 25 are exposed only to the rear and the back with respect to the traveling direction D1.

  FIG.4 and FIG.5 is a side view and a top view which show the wheel 30, the rotation- rocking | fluctuation conversion mechanism 50, and the rocking | fluctuation part 40. FIG. As shown in FIG. 4 and FIG. 5, the wheel 30 has an axle 30A protruding from both side surfaces. The axle 30A is provided along a direction D2 orthogonal to the traveling direction D1 in plan view as shown in FIG. The axle 30A is rotatably held by the two holding portions 24 and 25. Between the two holding parts 24 and 25, a rotation-rocking conversion mechanism 50 that converts the rotational movement of the wheel 30 into the rocking movement of the rocking part 40 is juxtaposed with the wheel 30.

  The rotation-rocking conversion mechanism 50 includes an eccentric cam 51 fixed to one side surface of the wheel 30 shown in FIG. The contour of the cam surface of the eccentric cam 51 is, for example, circular. The center P2 of the eccentric cam 51 is offset from the center P1 of the wheel 30 by the distance δ1. Further, the eccentric cam 51 is fixed to the wheel 30 and rotates integrally with the wheel 30.

  6A and 6B are a front view and a plan view of the rotation-rocking conversion mechanism 50 and the rocking portion 40. FIG. The rotation-rocking conversion mechanism 50 further includes a cam follower 52 shown in FIGS. 4 to 5 and a rocking drive unit 53. The cam follower 52 includes a first engaging portion such as a first groove 52A engaged with the circumferential surface of the eccentric cam 51, and a second engaging portion such as a second groove 52B engaged with the swing drive portion 53. The cam follower 52 is driven in one reciprocation (moving stroke = 2 × δ 1) by one rotation of the eccentric cam 51. Specifically, as shown in FIG. 4, when the wheel 30 is rotated by 1⁄4 in the A3 direction when the center P2 of the eccentric cam 51 is at the uppermost position on the longitudinal center line C2, the eccentric cam 51 and The cam follower 52 having the first groove 52A engaged therewith is driven to move forward by a distance δ1 in the A4 direction. Subsequently, when the wheel 30 is further rotated by 1⁄4 in the A3 direction, the center P2 of the eccentric cam 51 is set to the lowermost position on the longitudinal center line C2. Thus, the cam follower 52 is driven backward by a distance δ1 in the B4 direction. Subsequently, when the wheel 30 is further rotated by 1⁄4 in the B3 direction, the center P2 of the eccentric cam 51 is set to the traveling rear end side position from the longitudinal center line C2, and the cam follower 52 is driven backward by a distance δ1 in the B4 direction. Ru. Subsequently, when the wheel 30 is rotated by 1⁄4 in the B3 direction, the center P2 of the eccentric cam 51 returns to the uppermost position on the longitudinal center line C2, and the cam follower 52 is driven forward by the distance δ1 in the A4 direction. Thus, while the wheel 30 makes one rotation, the swinging unit 40 performs swinging in the A1 direction, returning in the B1 direction, swinging in the B1 direction, and returning in the A1 direction.

  The swing drive unit 53 shown in FIGS. 4 to 6 (A) and (B) swings around the swing vertical axis 53A as the cam follower 52 is driven, and the swing drive unit 53 and the connecting portion The swinging unit 40 connected via 41 is swung. As shown in FIG. 4, the rocking vertical axis 53A which protrudes upward and downward from the main body 53B of the rocking drive 53 is rotatably held by the two holding parts 24 and 25 as shown in FIG. 1 shows the support of the lower end of the rocking vertical axis 53A). As shown in FIGS. 6A and 6B, the main body 53B has a shaft 53C parallel to the swinging vertical axis 53A at a position offset from the swinging vertical axis 53A by a distance δ2. As shown in FIG. 5, the second groove portion 52 </ b> B of the cam follower 52 engages with the shaft portion 53 </ b> C of the swing drive portion 53. Thereby, as shown in FIG. 5 and FIG. 6B, when the cam follower 52 is driven to advance in the A4 direction, the main body 53B of the swing drive unit 53 swings around the swing vertical axis 53A, The rocking portion 40 is rocked in the A1 direction. When the cam follower 52 is driven to retract in the B4 direction, the main body 53B of the swing drive unit 53 swings around the swing vertical axis 53A and swings the swing unit 40 in the B1 direction.

  Here, when the wheel 30 is rotated, the rocking portion 40 applies an external force to the toy body 20 in the direction in which the rocking portion 40 is rocked (that is, the direction in which the rocking portion 40 is rocked) The conditions for moving (inclining in this embodiment) the moving toy body 20 in the directions A2 and B2 crossing the traveling direction D1 will be discussed.

  When the wheel 30 travels, the load that the wheel 30 receives from the rocking portion 40 is, as shown in FIG. 5, when the distance from the center of gravity G of the rocking portion 40 to the rocking vertical axis 53A is L1, It is in proportion to the weight (mass) of the moving part 40 and the distance L1. If this load is too large, the wheel 30 will not rotate or will stop immediately after rotation. For this reason, the rocking portion 40 is designed to be light. Further, the wheel 30 is made heavier than the swinging portion 40. Because the kinetic energy generated in the wheel 30 by traveling is proportional to the mass of the wheel 30, the larger the mass of the wheel 30, the more energy that can be used to move the rocking portion 40, and the rocking at a certain speed. Since the smaller the mass of the rocking portion 40, the smaller the kinetic energy required to move the moving portion 40, the smaller the mass difference between the wheel 30 and the rocking portion 40, the longer the rocking portion 40 is rocked. It is because you If the rocking portion 40 is heavier than the wheel 30, the kinetic energy necessary for rocking the rocking portion 40 to the kinetic energy generated in the wheel 30 becomes large, and the rocking portion 40 rocks. The time to move is shortened.

  Considering that the rocking portion 40 is generally formed of a resin, it is preferable that the wheel 30 be made of a material heavier than the rocking portion 40, such as metal or a composite material including metal. In addition, it is necessary to ensure that the wheel 30 has a large frictional force (or gripping force) generated with the traveling surface 1 to some extent. Considering the load that the wheel 30 receives from the rocking portion 40, if the frictional force is small, there is a concern that the wheel 30 will not slide and rotate on the traveling surface 1, and the rocking portion 40 can not rock. It is because there is. In particular, since the traveling surface 1 is assumed to be a slippery surface such as a table surface or a floor surface, the material of the wheel 30 needs to be determined in consideration of both the weight and the frictional force generated with the contact surface. . In the present embodiment, the wheel 30 is formed of brass and the ground contact surface is processed to an appropriate surface roughness, but this is merely an example, and as described above, the material of the wheel is the weight and the ground contact surface It should be determined in consideration of both of the frictional force generated between

  Next, in the present embodiment, the swinging portion 40 easily applies the external force to the toy body 20 so as to move the toy body 20 in the directions A2 and B2 intersecting the traveling direction D1. For this reason, the position of the center of gravity G of the rocking portion 40 when the rocking portion 40 is at the position where the rocking portion 40 is rocked to the maximum in at least one side in plan view shown in FIG. It is out of range. As described above, when the center of gravity G of the rocking portion 40 moves to a position deviated from the width W of the wheel 30, the wheel 30 easily loses its balance. Thus, the toy body 20 easily moves in the A2 direction if the rocking portion 40 swings in the A1 direction (is easy to tilt in this embodiment), and easily moves in the B2 direction if the rocking portion 40 swings in the B1 direction ( In this embodiment, it is easy to incline).

  In the present embodiment, as shown in FIG. 1, the swing angle θ at which the swinging portion 40 swings to one side is, for example, θ = 30 °. The deflection angle θ can be calculated using the eccentricity amount δ1 (see FIG. 4) of the eccentric cam 51 and the center-to-center distance δ2 (see FIG. 6B) between the swing vertical axis 53A and the shaft portion 63C. Considering that the 53 C swings about the swing vertical axis 53 A (that is, it moves horizontally by a distance shorter than δ 1 strictly), the trigonometric function schematically shown in FIG. It is given by (δ1 / δ2).

  Here, as shown in FIG. 5, the distance L1 from the center of gravity G of the rocking portion 40 to the rocking vertical axis 53A is from the position P3 at which the total length of the rocking portion 40 is bisected to the rocking vertical axis 53A. It is preferable to make it shorter than the distance L2. Then, the load that the wheel 30 receives from the rocking portion 40 when the wheel 30 travels (proportional to the weight of the rocking portion 40 and the distance L1 from the center of gravity G of the rocking portion 40 to the rocking vertical axis 53A) Can be reduced, and the travel distance of the manual traveling toy 10 can be increased.

  In order to make it easy to move the toy body 20 by an external force that moves the toy body 20 in directions A2 and B2 intersecting the running direction D1 (in this embodiment, it is inclined) (that is, the swinging portion 40 travels the toy body 20) In order to facilitate biasing in directions A2 and B2 intersecting with the direction D1, the total weight of the toy body 20, the wheels 30, and the rotation-rocking conversion mechanism 50 also needs to be reduced. In the present embodiment, the above-described total weight is reduced by molding the portions other than the wheels 30 with resin.

  Further, the position of the longitudinal center line C2 of the wheel 30 shown in FIG. 4 in the traveling direction D1 is the total weight of the manual traveling toy 10 (the toy body 20, the wheel 30, the swinging portion 40 and the rotation-swing conversion mechanism 50). It is preferable to set to the center-of-gravity position (not shown) of the total weight) or the front-back position near it. An external force that easily moves the toy body 20 in the directions A2 and B2 crossing the running direction D1 can be easily applied to the wheel 30 (that is, the toy body 20 can be easily urged in the directions A2 and B2 crossing the running direction D1 ), The toy body 20 is easy to move (in the embodiment, easy to tilt).

  The radius r of the wheel 30 can be determined by the relationship with the weight of the rocking portion 40 and the travel distance per one rotation. It is desirable to make the wheel 30 as large as possible, but if the weight is too heavy, the total weight of the manual running toy 10 becomes too heavy, and the external force (biasing by the rocking portion 40) given by the rocking portion 40 A2 or B2 Since there is a possibility that it can not move in the direction, the upper limit of the radius r is restricted in relation to the weight of the wheel 30. In order to reduce the weight by increasing the radius r of the wheel 30, the width W of the wheel 30 can be reduced. However, the width W is also restricted by the lower limit because it secures a sense of stability when swinging to the left and right during traveling. Is provided.

  In consideration of these matters, the radius r of the wheel 30 is determined in consideration of the travel distance per one rotation of the wheel 30. The travel distance per rotation of the wheel 30 is given by 2πr. As described above, each time the wheel 30 makes one rotation, the rocking portion 40 makes one reciprocating movement in the A1 direction and the B1 direction. When the travel distance 2πr per one rotation of the wheel 30 is short, the movement of the toy body 20 inclining in a reciprocating manner in the A2 direction and the B2 direction each time the wheel 30 makes one rotation is too fast for visual observation. Then, the radius r of the wheel 30 is r し て 9 mm, and the toy body 20 moves back and forth in the A2 direction and the B2 direction at least at a travel distance 2πr = about 56.5 mm (tilts in this embodiment) I have to. In the case where the toy body 20 is inclined in the A2 direction and the B2 direction as in the present embodiment, increasing the wheel radius r increases the barycentric position of the wheel 30, so the toy body 20 is A2, B2. It is also advantageous to be easy to tilt in the direction.

  Next, with reference to FIGS. 7A and 7B, a modification of the rotation-rocking conversion mechanism will be described. As shown in FIG. 7 (A), in the case of having two wheels 31, 31 with concentric axes, an eccentric cam 51A shown in FIG. 7 (B) is provided between the two wheels 31, 31 and this eccentric cam 51A. And a part of the rotation-rocking conversion mechanism 50A including the two wheels 31, 31 can be provided. In this way, in the direction D2 orthogonal to the traveling direction D1, the equilibrium balance at the time of standstill of the rotation-swing conversion mechanism 50A is improved, and the posture at the time of standstill can be stabilized. In the embodiment shown in FIG. 5, the wheels 30 and a part of the rotation-rocking conversion mechanism 50 are arranged side by side in the direction D2 orthogonal to the traveling direction D1 in plan view. In this case, the balance balance at the time of standstill of the toy body 20 is easily broken in the width direction D2 orthogonal to the traveling direction, and the toy body 20 during traveling is more easily inclined than in FIG. Become.

  The rotation-rocking conversion mechanism 50A shown in FIGS. 7A and 7B can use the rotation-rocking conversion principle shown in FIG. 5, but instead, a rack and pinion system is adopted. The cam follower 54 of the rotation-rocking conversion mechanism 50A has a groove 54A (see FIG. 7B) engaged with the eccentric cam 51A and a rack 54B (see FIG. 7A). The rocking drive unit 55 of the rotation-rocking conversion mechanism 50A includes a rocking vertical axis 55A, a drive gear 55B fixed to the rocking vertical axis 55A, a shaft 55C parallel to the rocking vertical axis 55A, and a shaft And a pinion gear 55D fixed to the portion 55C and meshing with the rack 54B and the drive gear 55B.

  When the cam follower 54 retracts in the A4 direction with the rotation of the wheels 31, 31, the pinion gear 55D is rotated in the A5 direction by the rack 54B, whereby the drive gear 55B is rotated and the swinging portion 40 swings in the A1 direction. . Similarly, when the cam follower 54 advances in the B4 direction as the wheels 31, 31 rotate, the pinion gear 55D is rotated in the B5 direction by the rack 54B, whereby the drive gear 55B is rotated and the swinging portion 40 in the B1 direction. Swing. Therefore, also by the rotation-rocking conversion mechanism 50A, the rocking portion 40 can be rocked in the same manner as the rotation-rocking conversion mechanism 50. In addition, in order to reduce the weight of the rotation-rocking conversion mechanism 50, the cam follower 54 and the rocking drive unit 55 can be formed of resin.

  Here, the position of the center of gravity G of the rocking portion 40 when the rocking portion 40 is at the maximum rocking position is the traveling direction D1 of the contact surfaces of the two wheels 31 and 31 shown in FIG. 7A. And the width W between the outer edges located at both ends in the direction D2 orthogonal to Thus, the center of gravity G of the swinging portion 40 moves to a position deviated from the width W between the outer edges of the two wheels 31 and 31 located at both ends in the D2 direction, so that the wheel 30 is likely to lose balance. Become. Thus, the toy body 20 easily moves in the A2 direction if the rocking portion 40 swings in the A1 direction (is easy to tilt in this embodiment), and easily moves in the B2 direction if the rocking portion 40 swings in the B1 direction (this In the embodiment, it is easy to incline).

  FIG. 8 shows a modification of the shape of the contact surface of the wheels 30 and 31 described above. In the contact surface of the wheel 30 (31) shown in FIG. 8, the center position P4 of the width in the D2 direction orthogonal to the traveling direction D1 protrudes by a height δ3 from both ends P5. Although various shapes can be considered to satisfy such conditions, in the present embodiment, the above conditions are satisfied by curving the shape of the ground contact surface. In this case, the toy body 20 is easily inclined even at the time of standing still, and the toy body 20 during traveling is easily inclined by the external force due to the rocking of the rocking portion 40. A narrow flat surface including the central position P4 may be provided at the central portion of the wheel 30 (31).

  The structure that makes the toy body 20 easy to tilt can also be applied when the toy body 20 has front wheels and rear wheels. FIG. 9 is a plan view schematically showing a manual traveling toy having a front wheel and, for example, two rear wheels 33 and 34. As shown in FIG. The two rear wheels 33, 34 shown in FIG. 9 can have a rotation-rocking conversion mechanism 50A applied to the two wheels 31, 31 shown in FIG. 7 (A). Instead of the two rear wheels 33 and 34, one rear wheel may be provided, and the rotation-rocking conversion mechanism 50 shown in FIGS. 4 and 5 may be provided. Even in the manual running toy shown in FIG. 9, the swinging portion 40 is swung by the rotation-rocking conversion mechanism 50 shown in FIGS. 4 and 5 or the rotation-rocking conversion mechanism 50A shown in FIG. 7A. The moving toy main body 20 can be moved (tilted in this embodiment) by an external force of (ie, by urging by the rocking portion 40). In this case, the three wheels 32, 33, 34 may have substantially the same outer diameter. Further, the rear wheels 33 and 34 may have a curved contact surface shown in FIG. In addition, at least the central portion of the ground contact surface of either the front wheel 32 or the rear wheels 33, 34 is made flat and the other ground surface is made so as to enhance the standability (self-sustaining) of the toy body 20 at rest. May be curved as shown in FIG. When the rear wheels 33 and 34 have a narrow flat surface including the center position P4 at the central portion thereof, the flat surfaces of the rear wheels 33 and 34 are flat surfaces provided at the central portion in the width direction of the front wheel 32. By making the width smaller than this, the toy body 20 can be easily moved (in the present embodiment, easily inclined). Thus, while the uprightness (self-supporting ability) of the toy body 20 at rest is stabilized by the front wheel 32, the external force from the rocking portion 40 is generated while the toy body 20 is traveling (that is, attachment from the rocking portion 40). The function of moving (in this embodiment, tilting) the toy body 20 can be ensured by the force.

  FIG. 10 shows a wheel 30 formed of a composite material. In FIG. 10, the wheel 30 includes a base 30B having an axle 30A, and a covering 30C that covers the base 30B to form a ground plane. The base material 30B is made of a material different from that of the covering material 30C, and the covering material 30C has a larger frictional force than that of the base material 30B with the same traveling surface. This can increase the frictional force (grip force) generated between the contact surface and the wheel 30. For example, the base material 30B can be POM (polyacetal resin), and the covering material 30C can be, for example, chloroprene rubber. Further, it is desirable that the total weight of the base material 30B and the covering material 30C (that is, the total weight of the wheel 30) be larger than that of the swinging portion 40. At this time, any one of the base material 30B and the covering material 30C may be formed of a material having a specific gravity larger than that of the swinging portion 40. Thus, the wheel 30 can be easily made heavier than the swinging portion 40. ,

  FIGS. 11 and 12 show a modification in which the movement (in this embodiment, the inclination) of the toy body 20 along with the swinging of the swinging portion 40 is increased. In FIG. 11, in a plan view, the swinging vertical axis 53A is at a position deviated from the center line C1 in the width direction D2 of the wheel 30. By doing this, the movement of the toy body 20 in the A1 direction (in the present embodiment, inclination) accompanying the rocking of the rocking portion 40 becomes large, and the movement of the toy body 20 during traveling can be changed. Since the movement in at least the direction A1 is large, it is easy to view. In FIG. 12, in a plan view, the swing vertical axis 53A is out of the range of the width W of the wheel 30. By doing this, the movement (in the present embodiment, the inclination) of the toy body 20 along with the rocking of the rocking portion 40 is further increased, and the movement of the toy body 20 during traveling can be further changed. Since the movement in at least the direction A1 is large, it is easy to view.

  According to the embodiment described above, the rotation-rocking conversion mechanism 50 converts the rotational movement of at least one wheel into the rocking movement of the rocking portion 40, and the rocking portion 40 is rocked in the rocking direction. The moving portion 40 applies an external force to the toy body 20 (that is, the swinging portion 40 biases the toy body 20), and the direction in which the swinging portion 40 swings the toy body 20, that is, traveling It is moved (tilted in this embodiment) in the direction D2 intersecting with the direction D1. That is, the manual traveling toy 10 in the present embodiment travels while alternately moving in the rocking direction of the rocking portion 40 (in the present embodiment, inclined). Therefore, by causing a change in the movement of the toy body 20 itself by the movement of the swinging portion 40 added to the toy body 20, the manually traveling toy 10 having a more interesting movement, for example, a fish swimming is simulated A manually moving toy 10 can be provided which moves. Further, in the case of the present embodiment, it is possible to reduce the material cost because it is not necessary to separately provide a drive source and a component for inclining the toy body 20.

  In the embodiment described above, the position G of the center of gravity of the rocking portion 40 at the time of rocking is set outside the range of the width of the contact surface of the wheel if there is one wheel. In the case of a plurality of wheels, the position G of the center of gravity of the swinging portion 40 at the time of swinging is the range of the width between the outer edges located at both ends in the direction D2 orthogonal to the traveling direction among the contact surfaces of the plurality of wheels Let's go outside.

  The load received by the wheel from the rocking portion 40 when traveling is proportional to the weight (mass) of the rocking portion 40 and the distance L1 from the center of gravity of the rocking portion to the rocking vertical axis. If this load is too high, the wheels will not rotate or will stop immediately after rotation. For this reason, the rocking portion 40 is designed to be light. Further, the wheel is made heavier than the swinging portion 40. Because the kinetic energy generated in the wheel 30 by traveling is proportional to the mass of the wheel 30, the larger the mass of the wheel 30, the more energy that can be used to move the rocking portion 40, and the rocking at a certain speed. Since the smaller the mass of the rocking portion 40, the smaller the kinetic energy required to move the moving portion 40, the smaller the mass difference between the wheel and the rocking portion 40, the longer the rocking portion 40 is rocked. Because Next, by moving the center of gravity of the rocking portion 40 to a position deviated from the above-described width of the wheel, the wheel is likely to lose its equilibrium balance, and the running toy body 20 moves in the direction in which the rocking portion 40 shakes. It becomes easy to move (in the present embodiment, easy to tilt).

  In the embodiment described above, the distance L1 from the center of gravity of the rocking portion 40 to the rocking vertical axis is from the position P3 at which the total length L of the rocking portion is bisected to the rocking vertical axis Is made shorter than the distance L2. This makes it possible to reduce the load (which is proportional to the weight of the rocking portion 40 and the distance L1 from the center of gravity of the rocking portion 40 to the rocking vertical axis) that the wheel receives from the rocking portion 40 when the wheel travels. This is because the travel distance of the manually-running toy 10 can be increased.

  In the embodiment described above, the at least one wheel and a part of the rotation-rocking conversion mechanism are arranged side by side in the direction D2 orthogonal to the traveling direction D1 in plan view. There is. In this way, the equilibrium balance of the toy body 20 at rest in the width direction D2 orthogonal to the traveling direction D1 is broken, and the external force from the rocking portion 40 is running (that is, biased by the rocking portion 40) The toy body 20 is inclined.

  Further, in the embodiment described above, the at least one wheel includes two wheels supported at a distance from the axle, and a part of the rotation-rocking conversion mechanism between the two wheels. Is placed. In this way, the balance balance at the time of standstill of the toy body 20 is improved in the width direction D2 orthogonal to the traveling direction D1, and the posture at the time of rest is stabilized.

  Further, in the embodiment described above, the contact surface of the at least one wheel has the center portion of the width in the direction D2 orthogonal to the traveling direction D1 protruded from both ends. In this way, the toy body 20 tends to be inclined so that the axle of the toy body 20 deviates from the horizontal state even when stationary, and the external force due to the rocking of the rocking portion 40 (that is, the urging by the rocking of the rocking portion 40) , The moving toy body 20 moves (tilts in this embodiment).

  In the embodiment described above, the at least one wheel includes a base 30B and a cover 30C that covers the base 30B to form a ground contact surface, and the cover 30C is the same running surface as the same running surface. The friction force generated between them is greater than that of the base 30B. In this way, the covering material 30C can increase the frictional force (grip force) generated with the contact surface of the wheel.

  In the embodiment described above, the toy body 20, at least one wheel protruding downward from the bottom surface of the toy body 20 and in contact with the traveling surface, and rotating about an axle, and the traveling direction of the toy body A pivoting portion 40 pivoted on a pivoting longitudinal axis supported at a rear end side position of the pivot, and pivotally fixed to the pivoting longitudinal axis, and the rotational movement of the at least one wheel A rotation-rocking conversion mechanism for converting into rocking motion of the rocking portion 40, and both of the outermost surfaces of the wheels positioned at both ends in a direction D2 orthogonal to the traveling direction D1 in plan view, The manual traveling toy 20 has two sideward fall preventing members 20B and 20C which project downward from the bottom surface of the toy body 20 and do not reach the height of the contact surface of the wheel. By this, the rotation-rocking conversion mechanism converts the rotational movement of at least one wheel into the rocking movement of the rocking portion 40, and the rocking portion 40 moves in the direction in which the rocking portion 40 is rocked. An external force is applied to move the toy body 20 in the direction in which the rocking portion 40 is rocking, that is, in the direction D2 intersecting the traveling direction D1 (in this embodiment, it is inclined). That is, it travels while moving the toy body 20 alternately in the swing direction (in the present embodiment, while tilting). Therefore, by causing a change in the movement of the toy body 20 itself by the movement of the swinging portion 40 added to the toy body 20, it is possible to provide the manually-running toy 20 that moves more interestingly. In addition, by providing the two side fall prevention members 20B and 20C, the toy body 20 falls while causing the movement of the toy body 20 itself to be changed by the movement of the swinging portion 40 added to the toy body 20. It is possible to continue traveling in the traveling direction D1. In addition, traveling resistance can be reduced by locally making contact between the side-tilt preventing members 20B and 20C and the traveling surface other than the wheels.

  In the embodiment described above, the toy main body 20 projects forward from the bottom surface at a position on the front side of the at least one wheel in the traveling direction D1 in plan view, and is a front collapse preventing member It has 20D. In this way, even if the toy body 20 attempts to fall forward when the toy body 20 is pushed away by hand, the forward fall preventing member 20D can contact the traveling surface and regulate the forward fall of the toy body 20. In addition, the traveling resistance can be reduced by locally making the contact between the front anti-falling member 20D and the traveling surface other than the wheels.

  Further, in the embodiment described above, the toy body 20 protrudes rearward below the bottom surface at a position further to the rear than the at least one wheel in the traveling direction D1 in plan view. It has a member. The rear fall prevention member can be provided instead of or in addition to the front fall prevention member 20D. In particular, the back fall prevention member falls back when the longitudinal center line (center of gravity) of the wheel is located on the front end side of the running direction D1 of the toy body 20 with respect to the center of gravity position of the total weight of the manual running toy 10. Useful for easy construction.

  Although the embodiment has been described in detail as described above, those skilled in the art can easily understand that many modifications can be made without departing substantially from the novel matters and effects of the present invention. Accordingly, all such modifications are intended to be included within the scope of the present invention. For example, in the specification or the drawings, the terms described together with the broader or synonymous different terms at least once can be replaced with the different terms anywhere in the specification or the drawings.

  DESCRIPTION OF SYMBOLS 1 running surface, 10 manual running toy, 20 toy main body, 20A bottom face, 20B, 20C side fall prevention member, 20D front fall prevention member, 30, 31, 32, 33, 34 wheels, 40 rocking part, 50, 50A Rotation-swing conversion mechanism, 51, 51A eccentric cam, 52, 52A, 54, 54A cam follower, 53, 55 swinging drive unit, 53A, 55A swing vertical axis, D1 running direction, D2 orthogonal direction (width direction), A1, B1 Swinging direction of swinging part, A2, B2 Tilting direction of toy body, A3, B3 Wheel rotating direction, A4, B4 Cam follower advancing / retracting direction, A5, B5 Pinion gear rotating direction, C1 Wheel width Divide center line, vertical center line of C2 wheel, G center of gravity of swinging part, height of H1 from the bottom of wheel, height of H2 side falling from bottom of magnetic shield member, height of P1 wheel Center of rotation, center of P2 eccentric cam, position of bisecting full length of P3 swinging part, center position of P4 wheel in width direction, both end position of P5 wheel in width direction, radius of r wheel, θ swinging part Swing angle, δ1 Eccentricity between the centers P1 and P2, δ2 Distance between the vertical axis of the swing and the center of the shaft, δ3 Difference in height of projection from the bottom of the center of the wheel and both ends

Claims (7)

With the toy body,
At least one wheel protruding downward from the bottom surface of the toy body and in contact with the traveling surface and rotating about an axle;
A swing portion fixed to the swing longitudinal axis so as to be swingable about the swing longitudinal axis supported at the rear end side position in the running direction of the toy body;
A rotation-rocking conversion mechanism that converts the rotational movement of the at least one wheel into a rocking movement of the rocking portion;
I have a,
The position of the longitudinal center line of the wheel in the traveling direction is set to the center of gravity position of the total weight of the manually traveling toy or the front and back position close to it . In the manually traveling toy according to claim 1,
The wheel is heavier than the rocking portion,
The position of the center of gravity of the rocking portion when the rocking portion is at a position where the rocking portion is maximally rocked in at least one side in a plan view is a direction orthogonal to the traveling direction of the contact surface of the at least one wheel. The hand-running toy is characterized in that it is out of the range of the width between the outer edges located at both ends of the. The manually-running toy according to any one of claims 1 and 2.
The distance from the center of gravity of the rocking portion to the rocking vertical axis is shorter than the distance from a position at which the total length of the rocking portion is bisected to the rocking vertical axis. The manually-running toy according to any one of claims 1 to 3,
The manual traveling toy according to claim 1, wherein the at least one wheel and a part of the rotation-rocking conversion mechanism are arranged side by side in a direction orthogonal to the traveling direction in a plan view. The manually-running toy according to any one of claims 1 to 3,
The at least one wheel includes two wheels supported coaxially spaced apart with the axle,
A part of the rotation-swing conversion mechanism is disposed between the two wheels, wherein the toy is a manually-running toy. In the manually running toy according to any one of claims 1 to 5,
The hand-running toy according to claim 1, wherein a central portion of a width of the at least one wheel in a direction perpendicular to the traveling direction protrudes from both ends. The manually-running toy according to any one of claims 1 to 6,
The at least one wheel includes a base material and a covering material covering the base material to form a ground contact surface, and the covering material has a larger frictional force generated with the same running surface than the base material. A manual traveling toy characterized by

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