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(11) | EP 0 133 054 A2 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Running toy |
| (57) A running toy which performs jumping or somersalt operations when it is running,
comprising a housing (1; 22) having wheels (3a, 3b; 28,30) for running; a moving portion
(6; 40) disposed in the housing so as to move in the upper and lower directions; a
spring (10; 44) which imparts the upward force to the moving portion; a stopper member
(11; 50) which holds the moving portion at the position where it is pushed down against
the resilient force of the spring; a rotary member (14; 64) which rotates being inter-locked
with the wheels for running; and an engagement-liberating member (15,76) which is
provided on the rotary member and liberates the engagement between the stopper member
and the moving portion when the rotary member is rotated by a predetermined position.
The rotary member comprises a gearwhich is rotated by the wheels for running, and
the engagement-liberating member comprises a projection provided on the surface of
the gear in an eccentric manner or a cam provided in concentric with the gear. |
FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION
[0002] The running toys which perform jumping or somersault operation have been disclosed by Japanese Patent Publication Nos. 54-18780 and 53-12208. The running toys according to these patents given to the applicant are such that a swingable lever which is pivotally mounted in upper and lower directions inside of the body is pushed down against the force of a spring and restrained by a stopper, then the toy is pushed to run by hand and the resilient force which has been stored in the spring is released all at once when the toy has run a predetermined distance, whereby it jumps up above the path for running or the floor, or it turns a loop.
[0003] However, because both of these running toys are pushed to run by hand, i. e., they are the type of no power source such as a motor, the rotational force of the wheels is almost lost when the toys have run a predetermined distance and performed a jumping or somersault operation, and thus it is difficult to run again after landing. Of course, it is possible to extend the running distance if the toy is made small and light, but it is inevitable to reduce the size and mass of the swingable lever which constitutes a moving portion for jumping. As a result, there would arise a problem that the jumping force is reduced and the toy becomes less interesting.
[0004] Therefore, the conventional structures as mentioned above are suitable to toys for relatively small aged children, but not satisfactory to activity toys such as stunt car and motorcycle which attach importance to the ability of running after jumping.
[0005] Accordingly, an object of the invention is to provide a running toy which can perform the above-mentioned operations with the construction that is made small and light.
[0006] Another object of the invention is to provide a running toy suitable to the activity toys such as stunt car and motorcycle, which is small in size and can attain a big power for jumping, without using a power source that is disadvantageous in space and weight.
DISCLOSURE OF THE INVENTION
[0007] According to this invention, there is provided a running toy which comprises a housing having wheels for running; a moving por- , tion disposed in said bousing so as to move in the upper and lower directions; a spring which imparts the upward force to said moving portion; a stopper member which holds said moving portion at the position where it is pushed down against the resilient force of said spring; a rotary member which rotates being interlocked with said wheels for running; and an engagement-liberating member which is provided on said rotary member and liberates the engagement between said stopper member and said moving portion when said rotary member is rotated to a predetermined position.
[0008] According to a preferred embodiment of the invention, the moving portion of the running toy comprises a weight which has a recess formed in the bottom surface thereof, and the spring is disposed in the recess so as to expand and contract in the upper and lower directions. The rotary member comprises a gear that - meshes with a worm gear fitted to the arle of the wheels for running, and the engagement-liberating member comprises a cam provided in concentric with the gear or a Projection provided on the surface of the gear in an eccentric manner. The axles of the wheels for running penetrate through holes that are formed on both sides of the housing In an elongated manner in the upper and lower directions, and when the housing is lifted up, the axles of wheels for running descend along the holes due to their own weight, whereby the worm gear fitted to the axle of the wheels for running disengages from the gear,
[0009] According to another preferred embodiment of the invention, the moving portion includes inside said rotary member and a flywheel that ratatably drives the wheels for running, and the engagement-liberating member comprises a projection that liberates the engagement between the stopper member and the moving portion when the rotary member is rotated to a predetermined position. The moving portion includes a transmission gear which is positioned between a coaxial gear rotating with the whees: for running and the rotary member, and the rotary member comprises a deformed gear having a part of its circumference formed by a curve, curvature radius of which being more than that of other part, having a gear portion given flexibility by cutting from a point of the curve part in a shape of arc, and having a tooth-lacked part formed at a position slightly distanced from a starting point of the cutout in an opposite direction. The tooth-lacked part faces the transmission gear when the movable portion abuts on an upper end of inner wall of the body. The deformed gear meshes with the transmission gear when the moving portion is at the position where it is pushed down, and the teeth at the starting point of the cutout of the deformed gear mesh with the transmission gear when the projection comes to the position where it releases the moving portion restrained by the stopper member during rotation of the deformed gear. The transmission gear is provided to disengage from the coaxial gear of the wheel for running and the rotary member by pushing a button protruded outside of the body.
BRIEF DESCRIPTION OF DRAWINGS
[0010]
Fig.l is a perspective view of a toy car according to an embodiment of the invention;
Fig.2 is a perspective view illustrating the internal construction of the toy car;
Fig.3 is a partial sectional view of the toy car;
Fig.4 is a perspective view illustrating the internal construction of another toy car;
Fig.5 is a side view of a motorcycle according to another embodiment of the invention.;
Fig.6 is a sectional view along the line VI-VI of Fig.5;
Fig.7 is a partial sectional view;
Fig.8 is a sectional view of the moving portion along the line VIII - VIII of Fig.6;
Fig.9 is a sectional view illustrating a stopper-releasing mechanism of the movable portion; and
Figs. 10 to 14 are partial sectional views showing the change of state from the start of running to the jumping operation.
DETAILED EXPLANATION OF THE PREFERRED EMBODIMENTS
[0011] Fig.1 shows a toy car according to a preferred embodiment of the invention, and Figs.2 and 3 show the internal construction thereof. The toy car has a housing 1 of the shape of the body of a passenger car, and front and rear pairs of wheels 3a and 3b attached to both ends of a front axle 2a and a rear axle 2b that penetrate through both side walls of the housing. To the front axle 2a is attached a worm gear 4 which meshes with a spur gear that will be mentioned later. Through holes 5 where the axles 2a, 2b rotatably penetrate have vertically elongated shapes formed in both side walls of the housing 1. When the toy car is placed on the floor, the axles are positioned at the upper ends of the through holes 5 to support the housing 1 as shown in Fig.3. When the toy car is lifted up, on the other hand, the axles descend to the lower ends of the through holes 5 due to their own weight and a weight of the wheels 3a and 3b.
[0012] A moving portion or member 6 consisting of a weight having the shape of rectangular parallelepiped is disposed at a central position in the housing 1 so as to move in the upper and lower directions. On the upper surface of the moving member 8, there are provided a protuberance 7 of a smaller diameter in concentric therewith and a shaft 8 which upwardly stretches from the center of the protuberance 7 and penetrates through the upper wall of the housing 1 ( roof of the car). A push button 9 is attached to the upper end of the shaft 8. A recess 6a of a circular shape in cross section is formed in the lower surface of the moving member 6 as shown in Fig. 3, and a coil spring 10 is accommodated to freely expand and contract therein.
[0013] Above the moving member 8, there is disposed a nearly L-shaped stopper member 11 in the back and forth direction to hold the moving member 6 at a lower position against the resilient force of the spring 10 as shown in Fig.2. The stopper member 11 is supported at its rear end llb by a pin 12 so as to rotate in the horizontal direction, and has a forwardly stretching portion of an inverted L-shape in cross section so as to come into engagement with the upper edge portion of the protuberance 7 on the upper surface of the moving member. Further, the front end of the stopper member 11 is downwardly bent, and its lower end lla is forwardly protruded.
[0014] The stopper member 11 of the above-mentioned shape is pulled to turn in the counterclockwise direction as viewed from the upper side with the pin 12 as a center, by a spring 13 which is disposed between the bent portion of the stopper member 11 and a portion of the housing 1. When the moving member 6 is lifted up to the upper position by the spring 10 as shown in Fig.3, the stopper member 11 comes into contact with the side surface of protuberance 7 on the moving member 8. Here, if the push button 9 is depressed by a finger against the force of the spring 10 to lower the moving member 8 and the protuberance 7, the stopper member 11 slightly turns in the counterclockwise direction, engages with the upper edge of the protuberance 7, and holds the moving member 6 at the lower pasition.
[0015] A spur gear 14 is disposed to mesh with the worm gear 4 between the lower end lla of the stopper member 11 and the front axle 2a. An eccentric pin 15 is studded on the upper surface of the spur gear 14. When the pin 15 comes into engagement with the lower end lla of the stopper member 11 to push it in the clockwise direction, the moving member 8 is held no more at the lower position by the stopper member 11. To bring the pin 15 to a predetermined start position, furthermore, a spring 16 is connected between the pin 15 and a portion of the housing 1.
[0017] The toy is placed on the floor or any other plane, and the push button 9 protruding beyond the roof of the car is depressed. The moving member 8 therefore is lowered and is held at the lower position by the stopper member 11 as mentioned above, Fig.2 illustrates this condition. In this case, the worm gear 4 of the front axle 2a is in mesh with the spur gear 14, and the pin 15 is located at the starting position as shown. This is because, if the toy is once lifted up prior to placing It on a plane, the axle 2a descends to the lower end of through holes 5 of the housing 1 . and the worm gear 4 disengages from the spur gear 14. Therefore, the spur gear 14 and the pin 15 are returned to the starting position being pulled by the spring 18.
[0018] Under this condition, if the toy is forcibly pushed forward to run, the rotation of the worm gear 4 causes the spur gear 14 and the pin 15 to rotate in the direction of arrow of Fig.2 overcoming the pulling force of the spring 18. Then, the pin 15 comes into engagement with the lower end 11a of the stopper member 11 to push it. Therefore, the moving member 8 is no more held by the stopper member 11, and is abruptly pushed up by the resilient force of the spring 10. Accordingly, the protuberance 7 of the moving member 8 comes into collision with the inner aide of the ceiling, and thus the toy jumps up due to that force. Here, since the moving member 8 is located at the center of the car body. the toy car jumps up.
[0019] As described above, the toy car performs the jumping operation when it has run a predetermined distance, i.e., when the pin 15 is turned to a position at which the moving member 8 is no more held by the stopper member 11. According to the invention, furthermore, the toy car can be constructed to perform somersault operation by changing the position of the moving member.
[0020] Fig.4 shows a toy car which performs somersault operation after it has run a predetermined distance according to modified embodiment of the invention. The construction of this embodiment is fundamentally the same as the toy of Fig.l, but is different with respect to the points mentioned below.
[0021] First, the direction in which the toy proceeds is opposite. That is, the worm gear 4 is attached to the axle 2b of the rear wheels 3b. When the axle 2b rotates forward as indicated by arrow, the spur gear 14 rotates in the counterclockwise direction.
[0022] A cam 17 is provided on the upper surface of the spur gear 14 in concentric therewith, and the protruded portion of the cam 17 comes into engagement with the lower end lla of the stopper member 11 to push it leftwards, so that the moving member 8 is no more held at the lower position by the stopper member 11.
[0023] Further, the spring 13 is hooked to the downwardly bent portion of the stopper member 11 to turn it in the counterclockwise direction.
[0024] Moreover, the moving member 8 has a columnar shape end is disposed in a front portion of the car body.
[0025] Therefore, if the toy is vigorously pushed forward like the above-mentioned case, the rotation of the worm gear 4 causes the spur gear 14 to rotate in the direction of arrow in Fig. 4 overcoming the pulling force of spring 16. The cam 17 then comes into engagement with the lower end lla of the stopper member 11 to push it, whereby the moving member 8 is liberated from the stopper member 11 and is suddenly pushed up by the resilient force of the spring 10. Consequently, the protuberance 7 of the moving member 6 comes into collision with the inner side of the roof, and the toy jumps up due to that force. In this case, the moving member 6 is located in the front portion of the car body, and the upward force of the moving member 6 is imparted to the front portion of the roof. Accordingly, the car somersaults rearwardly and lands on the ground.
[0026] Although the foregoing description has dealt with two types of toy car, the invention is in no way limited thereto. For example, the moving member consists of a weight of a suitable shape to secure the force which is sufficient to cause the toy to jump up. However, when the car body is light in weight or a great jump is not required, the moving member needs not to consist of the weight. Further, the mechanism for liberating the moving member from the stopper member may be any one which operates being inter- locked to the rotation of wheels, and needs not be limited to the one which is shown in the drawings.
[0027] Next, Fig.5 shows a toy motorcycle according to another preferred embodiment of the invention, and Fig.6 is a sectional views along the line VI - VI , which shows the internal construction of the toy. The toy motorcycle comprises a hollow body 22 of the shape of a motorcycle, and front and rear wheels 28 and 30 which are rotatably attached to front and rear portions of the body by axles 24 and 28, respectively. A strip-like rubber tire 30a is wound around a rearwheel 30.
[0028] A front end of the body 22 has a through hole 34 (Fig.?), through which an upper portion of a tilted handle shaft 32 penetrates loosely to move in upper and lower directions, and has an upper surface plate which is formed as one body to hide an upper end 33 of the handle shaft 32. The upper end 33 of the handle shaft 32 is shaped greater in diameter and flat so that it cannot fall out of the through hole 34. A middle portion of the handle shaft 32 is shaped as a step supporting the front portion of the body 22 through contact with a bottom surface of the front end of the body 22. A lower portion of the handle shaft 32 diverges into two extended portions, between which portions the front wheel 28 is rotatably supported by the axle 24 as a fulcrum and a fender formation 38 is provided.
[0029] In the body 22, a moving portion 40 which is formed by joining left and right cases as shown in Fig. 8, is swingably mounted in upper and lower directions at the rear axle 28 as a fulcrum. A front end of the moving portion 40 protrudes forward and has on a bottom surface a recess 43 receiving an upper end of a coil spring 44 which is disposed so as to expand and contract in upper and lower directions in the body 22 as shown in Fig. 7. Normally, the moving portion 40 is urged to an inner wall surface of the body 22 by the spring 44 at the front end 42, and the upper part of the moving portion 40 appears from the body 22. In the recess 43 there is disposed a supplementary weight 45 (Fig. 8) for moving the center of gravity of the moving portion 40 toward the front end 42.
[0030] Under the front end 42 of the moving portion 40, a protrusion 48 is provided at the position where it cannot be in contact with the spring 44 and the supplementary weight 45, and a stopper member 50 is pivotally mounted by an axial pin 48 attached to the protrusion 48 as shown in Fig. 9. While one end of the stopper member 50 is supported by the axial pin 48, other end extends to the center of the moving portion 40. The stopper member 50 is pulled by a spring 52 disposed between a middle portion of the stopper member 50 and an inner wall surface of the moving portion 40, and is kept against the inner wall of the body 22.
[0031] On the inner surface of the front portion of the body 22, formed is a detention protrusion 54 which holds the moving portion 40 at the position where it is pushed (Fig. 10) by engagement with an end of the stopper member 50 when the moving portion 40 is pushed down while the spring 44 is pressed.
[0032] Inside of the moving portion 40, there are accommodated means for driving the rear wheel 30 and stopper release means including a rotary member which liberates the engagement between the stopper member 50 and the detention protrusion 54 ( which operates as a kind of timer ) when the rear wheel 30 has rotated a certain degree of rotation.
[0033] First, as shown in Figs. 8 and 8, the driving meas of the rear wheel 30 comprises a flywheel 58 which rotates with an axle 58 attached to the moving portion 40 in the center, a pinion 80 which is coaxial and rotates with the flywheel as one body, and a stepped gear 82 consisting of a greater-diameter portion meshing with the pinion 80 and a smaller-diameter portion meshing with a coaxial gear 31 provided as one body in the left side of the rear wheel 30. Accordingly, it is possible to energize, that is, to give the rotational force to the the flywheel 58 by rotating the rear wheel 30.
[0034] According to the present inven:ion, while the flywheel 58 is used as as a power source to rotate the rear wheel 30, it is used as means providing a necessary mass for beating the moving portion 40 against the body 22 to locp the running toy. In addition, the flywheel has the role as a power source driving the stopper-release means mentioned below.
[0035] Next, the stopper-release means assembled in the moving portion 40 will be explained. First, there is disposed a deformed gear 84 which rotates with the axle 56 of the moving portion 40 in the center and independently of the flywheel 58 as shown in Figs. 6 and 7, as a rotary member for releasing the engagement between the stopper member 50 and the detention protrusion 54 when the rear wheel 30 has rotated a certain degree. Also, there are disposed a stepped transmission gear 66 having a smaller-diameter portion 66a meshing with the deformed gear 64, and a pinion 68 which is attached to the axle 28 of the rear wheel 30 as one body and is meshing with a greater-diameter portion 88b of the transmission gear 88, to construct the stopper-release means together with the deformed gear 64. Here, an axle 70 of the transmission gear 66 penetrates through the right side casing of the moving portion 40 and the body 22 and protrudes outside. A push button-72 is attached to the tip of the axle 70, and a coil spring 74 surrounding the axle 70 is disposed between the push button 72 and the body 22. The circumference of the coil spring 74 and the push button 72 is hidden by a cylindrical protrusion 22a formed in the body 22.
[0036] In the usual state where the push button 72 is protruded as shown in Fig. 6, the transmission gear 86 meshes with the deformed gear 84 and the pinion 88 of the rear wheel 30 to transmit the rotation of the rear wheel 30 to the deformed gear 64. When the push button 72 is pushed against the spring 74 as shown by an arrow, however, the transmission gear 88 is disengaged from the the deformed gear 84 and the pinion 88, so that it cannot be rotated in spite of the rotation of the rear wheel 30. Stopping pushing the button 72, the push button 72 and the transmission gear 66 are urged back where they were by the force of the spring 74.
[0037] The deformed gear 64 is formed as follows by a plastic material usually used for toys. As shown in Fig. 9, the deformed gear 64 has a part 84a of its circumference formed by a curve, curvature radius of which being more than that of other part, a gear portion which has flexibility given by cutting from a point of the curve part 64a in a shape of arc, and a tooth-lacked part 84b formed at a position slightly distanced from a starting point of the outcut 65 in an opposite direction.
[0038] In the state where the restriction of the moving portion 40 has been released and thus the deformed gear 84 has been reset in an initial Position as explained later, the tooth-lacked part 84b of the deformed gear faces the smaller-diameter portion 66a of the transmission gear 66 as shown in Fig. 8. Therefore, even if the transmission gear 88 rotates, the rotational force thereof is not transmitted to the deformed gear 84. When the moving portion 40 is brought to the position where it has been pushed down as shown in Fig. 10, however, the deformed gear 64 is in a state to be given the rotational force through engagement between the teeth Adjoining the tooth-lacked part 64b and the tansmission gear 66.
[0039] On the surface of the deformed gear 84 formed is a projection 78 which engages with an end of the stopper member 50 extending to the center of the moving portion 40 so as to slightly rotate the stopper member 50 in a clockwise direction in the drawIng. The position of the projection 78 is set so that the projection 76 can push the end of the stopper member 50 to release the engagement with the detention protrusion 54 when the gear portion adjoining the starting point of the cutout 85 of the deformed gear 64 meshes with the smaller-diameter portion 66a of the transmission gear 88 as shown in Figs. 12 and 13, in the state where the other end of the stopper member 50 is engaging with the detention protrusion 54 in the body 22.
[0040] When the engagement between the other end of the stopper member 50 and the detention protrusion 54 is released by the proJection 76 (Fig. 13), the movable portion 40 in abruptly pushed up by the resilient force of the spring 44 to rotate as a whole with the rear axle 28 in the center. Thus, the deformed gear 64 is also moved upward. At this time, the rotation of the deformed gear 84 must be maintained until the tooth-lacked part 84b reaches the position of the smaller-diameter portion 66a of the transmission gear 88. For that purpose, the curvature radius of the part 84a of the deformed gear 64 is made greater, which part engages with the smaller-diameter portion 66a of the transmission gear 66 when the protrusion 76 releases the engagement as mentioned above, whereby the engagement between the deformed gear 84 and the smaller-diameter portion 66a of the transmission gear 66 is maintained even if the deformed gear 84 has moved upward.
[0041] Meanwhile, before the protrusion 76 releases the engagement (Fig. 12), the deformed gear 64 must be in mesh with the smaller-diameter portion 88a of the transmission gear 66 at a constant diameter (which is smaller than the curvature radius of the curve part 84a mentioned above). For that purpose, the arched cutout 85 is formed in the curve part 64a of the deformed gear 64 which is meshing with the smaller-diameter portion 66a before the protrusion 76 releases the engagement as mentioned above, so that the flexibility is given to the part 64a. Thus, the gear portion of . the deformed gear 64 meshing with the smaller-diameter portion 66a of the transmission gear 66 is retired to the diameter equal to that of other portion before the protrusion 76 releases the engagement.
[0042] Being constructed as mentioned above, the toy motorcycle as shown operates as explained below.
[0043] First of all, the moving portion 40 which is in the upper position as shown in Fig. 7 is pushed down until the end of the stopper member 50 engages with the detention protrusion 54. Next, while the push button 72 in the right side of the body 22 is pressed by a finger, the rear wheel 30 is rotated by pushing it forward on the floor. Accordingly, the rotational force is transmitted from the gear 31 formed as one body in the rear wheel 30 to the flywheel 58 through the stepped gear 62 and the pinion 60. At this time, the deformed gear 84 is not rotated wherever the tooth-lacked part 64b is Positioned because the transmission gear 66 of the stopper- release means is not in mesh with either the pinion 68 of the rear axle 28 or the deformed gear 64.
[0044] If the body 22 is placed on the floor in such a manner that it is pushed forward, the rear wheel 30 is driven by the rotational force of the flywheel 58 and thus the toy begins to run forward. At the same time, the transmission geer 66 meshes with both of the pinion 88 of the rear axle 28 and the deformed gear 64, and thus the rotation of rear wheel 30 is transmitted to the deformed gear 84, which is rotated in the counterclockwise direction in Fig. 10 and the following figures. At this time, because the deformed gear 84 has already been reset in the position of Fig. 8 after the rest- riotioa of the moving portion 40 was ceased, the deformed gear 84 begins to rotate from this position. However, if the flywheel 58 was energized without pushing the push button 72, the deformed gear 84 would have been rotated from the reset position before the toy begins to run on the floor.
[0045] With the rotation of the deformed gear 84, the projection 78 on the surface thereof is in engagement with the end of the stopper member 50 as shown in Fig. 11, whereby the stopper member 50 is rotated in the clockwise direction with the axial pin 48 in the center, and the other end of the stopper member 50 gradually slides up underneath the detention protrusion 54 of the body 22. At this time, the deformed gear 84 neshes with the smaller-diameter portion 88a of the transmission gear 88 at the gear part 84a having flexiblity as shown in Fig. 12, and the starting point of the outcut 85 approaches to the smaller-diameter portion 88a.
[0046] When the end of the stopper member 50 has got over the tip of the detention protrusion 54, the moving portion 40 is rotated upward in a moment with the rear axle 26 as a fulcrum by the resilient force of the contracted spring 44, and then the front end 42 collides against the inner wall surface of the upper portion of the body 22 (Fig. 13). In this case, the deformed gear 64 keeps the engagement with the smaller-diameter portion 66a of the transmission gear 66 at the starting point of the cutout 65. When the moving portion 40 is pushed up, the deformed gear 84 gets over the starting point of the cutout 85 simultaneously and is in mesh with the smaller-diameter portion 66a until the tooth-lacked part 84b comes thereto.
[0047] By the collision of the moving portion 40 the running toy jumps up from the floor. In this case, the toy which jumped up turns a loop rearward as shown in Fig. 14 and lands on the floor because the impact from the moving portion 40 operates at the front of the body 22. During the time of loop the tooth-lacked part 64b of the deformed gear 64 cames to the position of the smaller-diameter portion 66a of the transmission gear 66 and the rotation of the deformed gear 64 is stopped, so that the deformed gear 64 is reset in the timer start position (Fig. 8). The running toy runs forward with the rear wheel 30 driven by the rotational force of the flywheel 58 which is maintained even after landing.
[0048] The time interval or distance from the start of running to that of jumping is determined by a time when the projection 76 on the deformed gear 64 detaches the end of the stopper member 50 from the tip of the detention protrusion 54. Accordingly, as far as the deformed gear 64 begins to rotate from the reset condition shown in Fig. 9, the running toy jumps up after it runs a constant distance corresponding to the rotational speed of the rear wheel 30. Meanwhile, if the deformed gear 64 has already been rotated from the reset position by energizing the flywheel 58 without pushing the push button 72, the toy jumps up earlier the time corresponding to that.
1. A running toy comprising:
a housing having wheels for running;
a moving portion disposed in said housing so as to move in the upper and lower directions;
a spring which imparts the upward force to said moving portion;
a stopper member which holds said moving portion at the position where it is pushed down against the resilient force of said spring;
a rotary member which ratates being Interlocked with said wheels for running; and
an engagement-liberating member which is provided on said rotary member and liberates the engagement between said stopper member and said moving portion when said rotary member is rotated by a predetermined position.
2. A running toy according to claim 1, wherein said moving portion comprises a weight
which has a recess formed in the bottom surface thereof, and said spring is disposed
in said recess so as to expand and contract in the upper and lower directions.
3. A running toy according to claim 1 or 2, wherein said rotary member comprises a
gear that meshes with a worm gear fitted to the azle of said wheels for running, and
said engagement- liberating member comprises a can provided in concentric with said
gear.
4. A running toy according to claim 1 or 2, wherein said rotary member comprises a
gear that meshes with a worm gear fitted to the axle of said wheels for running, and
said engagement-liberatins member comprises a projection provided on the surface of
said gear in an eccentric manner.
5. A running toy according to claim 3 or 4, wherein the axles of said wheels for running
penetrate through holes that are formed on both sides of said housing in an elongated
manner in the upper and lower directions, and when said housing is lifted up, the
axles of wheels for running descend along said holes due to their own weight, whereby
said worm gear fitted to the axle of said wheels for running disengages from said
gear.
6. A running toy according to claim 1, wherein said moving portion includes inside
said rotary member and a flywheel that rotatably drives said wheels for running, and
said engagement-liberating member comprises a projection that liberates the engagement
between said stopper member and said moving portion when said rotary member is rotated
to a predetermined position.
7. A running toy according to claim 8, wherein said moving portion includes a transmission
gear that is positioned between a coaxial gear rotating with said wheels for running
and said rotary member, and said rotary member comprises a deformed gear having a
part of its circumference formed by a curve, curvature radius of which being more
than that of other part, having a gear portion given flexibility by cutting from a
point of said curve part in a shape of arc, and having a tooth-lacked part formed
at a position slightly distanced from a starting point of the cutout in an opposite
direction; said tooth-lacked part facing said transmission gear when said moving portion
abuts on an upper end of inner wall of the body, said deformed gear meshing with said
transmission gear when said moving portion is at the position where it is pushed down,
and the teeth at the starting point of the cutout of said deformed gear meshing with
said transmission gear when said projection comes to the position where it releases
the restraint of said moving portion by said stopper member during rotation of said
deformed gear.
8. A running toy according to claim 7, wherein said transmission gear is provided
to disengage from said coasial gear of said wheel for running and said rotary member
by pushing a button projected outside of said body.