JPH0234943Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a new spring device for driving a toy, in which the part of the spring that transmits the stored force and release force is improved.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.A drive shaft 3 is rotatably attached to the rear side of the side plates 2, 2' of the machine casing 1. A pair of drive wheels 4, 4' are fixed to the outer ends, and a pinion 5 is fixed to the middle thereof in a non-rotatable manner, and both side plates 2,
2', an auxiliary shaft 6 parallel to the drive shaft 3 is freely rotatably installed at a point near the front, and a plastic plate-shaped shaft is installed on both sides of the interior of the machine casing 1 of the auxiliary shaft 6. The first and second end stop members 7 and 8 are supported inwardly and freely rotatably and slidably, and first and second flats are provided on the outer periphery of the opening edges of these end stop members 7 and 8. Gears 9 and 10 are integrally disposed around the machine housing 1, and a first transmission gear 11 that meshes with the first spur gear 9 is supported between the drive shaft 3 and the auxiliary shaft 6 in the machine casing 1. A second transmission gear 16 consisting of a large-diameter gear 14 and a small-diameter gear 15 is freely rotatably supported on the central shaft 12 of the first transmission gear 11, and the large-diameter gear 14 is supported on the pinion 5, and the small-diameter gear 15 is supported on the second flattened gear. In addition to meshing with the gears 10, an internal gear 17 is recessed on the side surface of the second transmission gear 16, and a gear-like notch 18 is integrally provided on the side surface of the first transmission gear 11. small ring 1
9 is loosely fitted, and the small ring 1 is fitted into one valley of the gear-like notches 18 on the inner periphery of this small ring 19.
A locking pawl 20, which is non-rotatably but swingably fixed to the central shaft 12, is also disposed on the outer periphery and engages the internally toothed wheel 17 when a coil spring 27 (to be described later) is storing force, and disengages when it is released. The claw portions 21 are provided at the required locations on the machine casing 1, and the coil springs 27 move naturally in the slots 23 and are connected to the first spur gear 9 and the main gear from the start of storing force of the coil spring 27 to the completion of releasing force, which will be described later. A clutch gear 24 that meshes with both of the radial gears 14 and disengages at the same time as the release is completed is installed, and a pipe-shaped body 26 is attached to the auxiliary shaft 6 at a location sandwiched between both end stop members 7 and 8. A coil spring 27 is wrapped around the outer periphery of the pipe-shaped body 26, and one end of the coil spring 27 is attached to the slot 28 provided on the pipe-shaped body 26, and the other end is attached to the second end stop member 8. A pair of elastic arms 31 and 31', which are irremovably latched to the provided latching hole 29 and provided with a latching ball 30 at the tip of the pipe-shaped body 26, are provided in a symmetrical arrangement extending in the centrifugal direction. . However, this engagement is such that when the stored force of the coil spring 27 reaches the maximum value, the locking ball 30 is released and jumps to another locking recess 32.

That is, in the above description, when the drive wheels 4, 4' are rotated backwards by rubbing them on the floor, etc., the backward rotation force is applied to the drive shaft 3, pinion 5, second transmission gear 16, second spur gear 10, and second spur gear 10. At the same time, the coil spring 27 is wound from one end via the two-end stop member 8, and the large-diameter gear 14 of the second transmission gear 16, the clutch gear 24, the first spur gear 9, and the first
The coil spring 27 is wound from the other end via the end member 7, arms 31, 31', and pipe-shaped body 26. In other words, the spring device of the present invention winds the stored force in the coil spring 27 from both ends simultaneously. It has the advantage of being able to complete the energy storage in half the time compared to the conventional method that involves retracting only from one end.

Incidentally, during the above-mentioned power accumulation, the first transmission gear and the internal gear 17 are driven by the first spur gear 9 and idle.

Furthermore, when the drive wheels 4 and 4' are brought into a so-called released state after the power storage is completed, the releasing force of one end of the coil spring 27 is applied to the second end stop member 8, the second spur gear 10, the second transmission gear 16, and the pinion 5. The releasing force of the other end of the coil spring 27 is transmitted to the drive wheels 4, 4' via the drive shaft 3, and at the same time, the releasing force of the other end of the coil spring 27 is
1', the first end member 7, the first spur gear 9, the first transmission gear 11, the internal gear 17, the second transmission gear 16, the pinion 5, and the drive shaft 3 to drive wheels 4, 4'.
In other words, the spring device of the present invention is of a type in which the stored force of the coil spring 27 is released from both ends thereof to rotate the drive wheels 4, 4' with a so-called boost,
Not only does it have a larger instantaneous force than the conventional one and is ideal for purpose-oriented use, but also the first and second end members 7 and 8, the pipe-shaped body 26 and the coil spring 27 equipped on the auxiliary shaft 6 in the present invention. After the stored force of the coil spring 27 is released, it exhibits a flywheel effect, which has favorable effects such as helping to increase the travel distance of the drive wheels 4, 4'.

[Brief explanation of the drawing]

The figure shows an embodiment of the present invention.
The figure is a perspective view of the whole, the second figure is a plan view, and the third figure is a perspective view of the whole.
The figure is also an exploded perspective view, Figure 4 is a sectional view taken along line A-A in Figure 2, Figure 5 is a sectional view taken along line A'-A' in Figure 2, and Figure 6 is a sectional view along line A'' in Figure 2. FIG. 1...Machine housing, 2, 2'...Side plate, 3...Drive shaft,
4, 4'... Drive wheel, 5... Pinion, 6... Auxiliary shaft, 7, 8... End stop member, 9, 10... Spur gear, 11, 16... Transmission gear, 12... Center shaft ,
14...Large diameter gear, 15...Small diameter gear, 17...
Internal toothed wheel, 18...Gear-shaped notches, 19...Small ring, 20...Latching pawl, 21...Claw portion, 23...Slot, 24...Clutch gear, 26...Pipe-shaped body, 27 ... Coil spring, 28 ... Sliding, 29
...Latching hole, 30...Latching ball, 31, 31'...
Arm, 32...Latching recess.

Claims (1)

[Scope of utility model registration request] A drive shaft 3 and an auxiliary shaft 6 are installed in parallel on the machine casing 1, and a pinion 5 is fixed to the drive shaft 3 so as not to rotate.
Also, a pair of first and second spur gears 9, 10 are attached to the auxiliary shaft 6.
The machine casing 1 is rotatably and slidably supported
The above-mentioned first
bearing the first transmission gear 11 that meshes with the spur gear 9;
A large diameter gear 1 is attached to the center shaft 12 of this first transmission gear 11.
4 and a small-diameter gear 15 are freely rotatably supported, and the large-diameter gear 14 is engaged with the pinion 5 and the small-diameter gear 15 is engaged with the second spur gear 10, respectively. An internal toothed ratchet 17 is recessed on the side surface of the first transmission gear 11, and a gear-like notch 18 is integrally provided on the side surface of the first transmission gear 11, and a small ring 19 is loosely fitted around the outer periphery of the gear-like notch 18. On the inner periphery of the ring 19, a locking pawl 20 that is alternatively fitted into the valley of the gear-like serrations 18 and fixes the small ring 19 on the central shaft 12 in a non-rotatable but swingable manner, and on the outer periphery there is also a coil spring, which will be described later. A pawl portion 2 that engages with the internal toothed wheel 17 when the force is stored in 27 and disengages when the force is released.
1 are respectively provided, and the first spur gear 9 and the large diameter gear 14 are moved naturally in the slot 23 at the required location of the machine casing 1, and the first spur gear 9 and large diameter gear 14 A clutch gear 24 that meshes with both and comes off at the same time as the release is completed is installed, and a pipe-shaped body 26 is rotatably attached to the auxiliary shaft 6 at a location sandwiched between both end stop members 7 and 8. death,
A coil spring 27 is wound around the outer periphery of the pipe-shaped body 26, and one end of the coil spring 27 is connected to the pipe-shaped body 26.
An elastic arm 31 whose other end is irremovably latched to a latching hole 29 provided in the second end latching member 8 on the sliding slit 28 provided in 6, and is provided with a latching ball 30 at the tip of the pipe-shaped body 26; 31' is provided, and this arm 31,
31' is inserted into the first end stop member 7, and the lock balls 30 are selectively engaged with the plurality of lock recesses 32 provided around the inner peripheral wall surface of the first end stop member 7. However, this engagement is made such that when the stored force of the coil spring 27 reaches the maximum value, the locking ball 30 is released and jumps to another locking recess 32, thereby providing a spring device for driving a toy.