JPH0453839Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a 2-speed action spring power device used in traveling toys and the like.

In running toys such as cars that operate by winding a spring by rubbing the drive wheel against the floor and releasing the spring, the speed changes automatically from a very slow running state. A spring power plant for a two-speed action was hitherto unknown. The reason for this was that there was no good way to make such a spring-powered device rotate slowly. That is, if a delay mechanism is introduced into such a power plant, if the wheels are rubbed against the floor and the gears are rotated, the gears will be destroyed.

The present invention was developed with attention to these points, and it is designed to prevent the shaft equipped with the gears that connect the reduction gear group and the drive gear group from coming into contact and separating from each other, which can slip when an excessive force is applied. It has been discovered that the above-mentioned drawbacks can be overcome by connecting the parts by a means, and the present invention has been achieved.

That is, in the present invention, a second gear having a gear connected to a reduction gear group on its outer periphery is inserted into a shaft provided with a first gear connected to a drive gear group, and the second gear is connected to the shaft and the second gear. The gear is connected to the gear by a contact/separation means that engages in the rotating direction of the gear but can slip when an unreasonable force is applied, and the contact/separation means engages the uneven portion formed on the contact portion thereof. The shaft is pivotally supported by a frame and a partition frame, and a stopper is provided on the outer periphery of the shaft between the frame and the second gear,
A spring is externally fitted between the second gear and the stopper and between the frame and the stopper, and the shaft slightly protruding from the partition frame is rotated by a cam rotating via a group of gears from the mainspring shaft. It is characterized in that the connection with the drive gear group is made free by pressing against the force of the spring.

Next, one embodiment of the present invention will be described with reference to the drawings.

Fig. 1 is a partially cutaway top view of the mainspring power device of the present invention, Fig. 2 is a view taken from - arrow in Fig. 1, Fig. 3 is a view taken from - arrow in Fig. 1, and Fig. 4 is a view taken from - arrow of Fig. 1. FIG. 5, which is a diagram for explaining the delay mechanism, is a diagram seen from the back of the cam to explain that the shaft is pressed by the cam.

The mainspring power device of the present invention includes a mainspring winding and driving mechanism A, a delay mechanism B, a means C for connecting the driving mechanism A and the delay mechanism B, and a means C for disconnecting the driving mechanism A and the delay mechanism B. It consists of means D.

As an example of the mainspring winding and driving mechanism, as shown in FIG.
a spur gear 3 that meshes with the pinion 2; a hoisting pinion 5 that constantly meshes with the spur gear 3 and is movably supported by an elongated hole bearing 4; and a central gear that meshes with the pinion 5. 6, and a drive pinion 9 which forms a large gear 8 integrally with the central gear 6 and is always in mesh with the large gear 8. During driving, the spur gear 10 provided integrally with the drive pinion 9 meshes with the pinion 35 provided integrally with the spur gear 3.

As shown in FIG. 4, the delay mechanism B includes a pinion 11 meshing with the second gear 19 of the means C for connecting the drive mechanism and the delay mechanism;
1, a pinion 13 that meshes with the spur gear 12, a large gear 14 that is integrated with the pinion 13, and the teeth of the large gear 14 are fed one by one. An example is shown in which a delay member 15 slows down the speed of the gear.

The means C for connecting the drive mechanism and the delay mechanism includes a shaft 18 provided with a flange portion 17 together with a first gear 16 connected to the drive gear group, and a second gear 19 inserted through the shaft 18. Individual grooves and grooves formed on the surface of the cylindrical convex portion on the side of the gear 19 and a concavo-convex portion in which the convex stripes face in the radial direction, and similar concavo-convex portions formed on the side of the flange portion in the radial direction. a contact/separation means 20 that engages in the rotating direction of a gear formed by meshing with the gears, but can idle when an unreasonable force is applied;
Cylindrical stopper 21 and cylindrical stopper 21
It consists of a coil spring 22 that is wound between the stopper 21 and the second gear and presses the second gear 19, and a coil spring 23 that is loosely fitted on the shaft between the stopper 21 and the frame 33. This shaft 18 is pivotally supported by a frame 33 and a partition frame 34.

As shown in FIGS. 2 and 5, the means for disconnecting the drive mechanism and the delay mechanism includes a small gear 24 formed on the mainspring winding shaft, a pinion 25 that meshes with the small gear 24, and a pinion 25 that meshes with the small gear 24. When the large gear 26 meshes with the pinion 25 and the individual concave grooves and protrusions formed on the back surface of the large gear mesh with the concave and convex portions facing in the radial direction, the gear slips when an excessive force is applied. It consists of a cam 28 forming a movable approaching/separating means 27, and two blades 29, 29' provided at the tip of the cam. The blade has a diagonal surface 3 on the back side that descends from the tip.
0.30', which causes the shaft tip 36 to be pressed along the oblique plane as the cam rotates. The number and spacing of the blades provided on the cam can be appropriately selected depending on how long the slow movement time is set.

Since the embodiment is constructed as described above, when the drive wheels 32, 32' are rubbed and rotated, the mainspring winding mechanism A winds the mainspring. Then, when the spring is released, the spring moves forward due to its untied force, but in this state, the means C that connects to the gear 3 of the drive mechanism A
Since the first gear 16 and the second gear 19 of the connecting means C are in mesh with the pinion 11 of the delay mechanism B, the gears 16, 19, 11 to 14 are rotated, and the delay member 15 rotates the teeth. A load is applied to transport the toy, and this load slows down the rotation of the axle, causing the toy to travel slowly. Then, as the toy runs, the gears 24, 2
When the cam 28 rotates via the coil spring 23 and the slanted surface 30 of the cam blade 29 reaches the position of the tip 36 of the shaft, the shaft 18 is pressed against the coil spring 23 by the slanted surface 30. Since the gear 3 and the first gear 16 are disengaged and no load is applied, the axle rotates faster and the toy runs at a higher speed.

The power device of the present invention can be applied not only to traveling toys such as cars, but also to doll toys. In that case, the mainspring may be wound up by the handle, and a known means utilizing the rotational movement of the drive shaft may be applied.

As mentioned above, the spring power device of the present invention can change the state of motion from an extremely slow state to a very fast state of motion, so when applied to running toys, doll toys, etc., it is very effective for children. It has the effect of creating interest.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway top view of the mainspring power device of the present invention, Fig. 2 is a view taken from - arrow in Fig. 1, Fig. 3 is a view taken from - arrow in Fig. 1, and Fig. 4 is a view taken from - arrow of Fig. 1. FIG. 5, which is a diagram for explaining the delay mechanism, is a diagram of the cam of the present invention seen from the back side. In the diagram, A... mainspring winding and drive mechanism, B
...delay mechanism, C...means for coupling, D...means for uncoupling.

Claims (1)

[Scope of utility model registration request] A second gear having a gear connected to the reduction gear group on its outer periphery is inserted into a shaft provided with a first gear connected to the drive gear group, and the shaft and the second gear are connected to each other. They are connected by a contact/separation means that engages in the rotational direction but can idle when an unreasonable force is applied, and the contact/separation means is constructed by meshing concave and convex portions formed on the abutting portions. , the shaft is pivotally supported by a frame and a partition frame, a stopper is provided on the outer periphery of the shaft between the frame and the second gear, and a stopper is provided between the second gear and the stopper and between the frame and the A spring is fitted externally between the stopper and the shaft slightly protruding from the partition frame is pressed against the force of the spring by a cam rotating through a group of gears from the mainspring shaft. A spring power device for a 2-speed action, characterized in that the first gear and the drive gear group are freely connected.