JPS596880Y2 - Electromagnetic drive car toy - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an electromagnetically driven traveling toy that travels by obtaining rotational driving force using the attraction action of an electromagnet.

The purpose of this invention is to axially support an approximately inverted L-shaped reciprocating lever on the main body of the vehicle so that it can rotate reciprocatingly at its bent middle part, and attach one end of the lever to the main body by attaching an iron piece to the main body. At the same time, the engagement groove on the other end of the lever is slidably engaged with the crank pin of the crankshaft provided on the main body, and the flywheel is attached to the crankshaft so as to rotate together with the crankshaft, and the engagement groove on the other end of the lever is slidably engaged with the crank pin of the crankshaft provided on the main body. The structure includes a transmission means for transmitting the rotation, and a switch mechanism that is built into the electric circuit connecting the electromagnet and the battery mounted on the main body and opens and closes with each rotation of the crankshaft. The reciprocating lever is rotated in one direction to apply rotational driving force to the crankshaft, and when the crankshaft rotates a predetermined angle together with the flywheel, the switch mechanism opens and the electromagnet is demagnetized, creating an attraction effect. This releases the reciprocating lever, and the rotational inertia of the flywheel causes the crankshaft to rotate and the lever to return to the other direction. When the crankshaft rotates once, the switch mechanism closes. Then, the reciprocating lever is rotated in one direction again by the attraction action of the electromagnet and rotational driving force is applied to the crankshaft as before. The crankshaft is continuously rotated by repeatedly rotating the moving lever back and forth, as if rocking, and this allows the wheels to run very smoothly with little power loss.Moreover, it has a very simple structure and is easy to manufacture and assemble. It is very suitable as a traveling toy for children, as it can be provided at a low price, the mechanism of the drive/transmission means is easy for children to understand, it is easy to handle, and its movements are very interesting. It's about providing something.

An embodiment of this invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes a vehicle main body made of an integral piece of plastic, and a pair of front and rear wheel axles 2,
3 are hung horizontally so as to pass through both side walls 1b, lb with a horizontal interval therebetween, and at the respective protruding outer ends of the front and rear wheel axles 2, 3 are wheels 4a, 4b, 4 like pulleys, respectively. C
, 4 d are fitted, and these four wheels 4 on the front, rear, left and right sides
The main body 1 is freely movable via a...

A support frame 5 in the shape of a 10-sided U-shape with an open rear end is integrally provided at the rear of the upper surface of the main plate 1a of the main body 1, and an electromagnet 6 is disposed at the center of the frame 5 on the upper side integral with the frame 5. It is clamped and fixed between the restraining plate 7 and the main plate 1a.

In addition, the support frame 5 has rear end portions of both side plates extending upwardly, and has support shaft support portions 5 a , 5 a at the upper end portions of which a support shaft 8 is horizontally suspended. A bent intermediate portion of a reciprocating lever 10 having a substantially inverted L shape is rotatably supported at 8 via a boss portion 9 having a long axis.

One end side hanging plate part 10a of this rotary lever 10 is the main body 1
It has an iron piece 11 that is attracted to the electromagnet 6 at its tip which is disposed near the rear position of the main body 1 and faces the electromagnet 6 so as to be able to move toward and away from it. It extends long to approximately the middle part in the front-rear direction, and has an engagement groove 12 of an appropriate length along the longitudinal direction at its tip.

On the other hand, bearing portions 13.13 are integrally provided on both sides of the main body 1 at approximately the middle portion in the front-rear direction, and are opposed to each other in the left and right directions.
A crankshaft 14 is rotatably mounted horizontally on the upper end portion of 3.13.

This crankshaft 14 is arranged parallel to the rear support shaft 8 at substantially the same height, and the crank pin 15 of this crankshaft 14 is inserted into the engagement groove 12 of the horizontal plate portion 10b of the rotary lever 10. The crankshaft 14 rotates in accordance with the reciprocating rotation of the rotary lever 10, that is, the vertical movement of the horizontal plate portion 10b.

A large diameter flywheel 1 is attached to one end of this crankshaft 14.
6 is fitted to give appropriate inertia to the rotation, and the other end of the crankshaft 14 is fitted with the main body 1.
For example, a pulley 17 and a belt 18 such as a rubber band are provided between the pulley 17 and the front right wheel 4b.

Further, a battery storage section 19 is formed in the front portion of the main plate 1a of the main body 1, and two batteries 20 and 21 are mounted on the main body 1 so as to be attached thereto.

The batteries 20, 21 are connected in series to an electrical circuit 23 for powering the rear electromagnet 6.

In addition, the electric circuit 23 includes a switch mechanism 24 that performs electrical opening and closing operations at predetermined intervals for each rotation of the crankshaft 14.
is incorporated.

That is, this switch mechanism 24 has an elastic contact piece 26 attached to the right half of the crankshaft 14 and a fixed position via a support 25 erected on the main plate 1a of the main body 1 so as to be in sliding contact with the outer peripheral surface of the right half of the crankshaft 14. As shown in FIG. 4, the right half of the crankshaft 14 consists of a conductive metal rod 14a and an insulating coating 14 that covers the entire area except for a part of the outer periphery of the conductive metal rod 14a.
b, and the exposed portion of the conductive metal rod 14a during one revolution of the crankshaft 14, that is, the conductive area A passes through the fixed position P where the contact piece 26 slides, is conductive. The circuit 23 is closed by the contact between the metal rod 14a and the contact piece 26,
Power is supplied to the electromagnet 6, and at other times, the circuit 23 is opened by insulating with the insulating coating 14b, and the power supply to the electromagnet 6 is stopped.

The timing at which the switch mechanism 24 closes the circuit is determined by the crankshaft 1
As shown in FIG. 4, the crank pin 15 moves upwardly at a small angle α, for example, between the crank shaft 14 and the support shaft 8 of the rotary lever 10, from the line M connecting the two. The rotation from position B, which is deviated by 5 to 10 degrees, to position B', which coincides with line N perpendicular to line M, is limited to a rotation range of less than 90 degrees.

That is, when the crank pin 15 is at the position between BB', the sliding contact position P of the contact piece 26 and the conductive area A indicated by the conductive metal rod 14a are such that the contact piece 26 is in sliding contact with the conductor area A. is set.

Reference numeral 27 in FIG. 2 is a conductor that transmits the electricity flowing through the conductive metal rod 14a of the right half of the crankshaft 14 to the lead wire 28 forming part of the circuit 23 at its bearing portion. .

The operation of the electromagnetically driven traveling toy of this invention will now be explained.

First, the crankshaft 14 is slightly rotated in the direction of the arrow in FIG. 3 by pushing the vehicle body 1 by hand to move it forward in the direction of the arrow, or by rotating the flywheel 16 by hand.

Then, as the crankshaft 14 rotates, the conductive range A of the switch mechanism 24 on the right half approaches the fixed position P of the contact piece 26, where the circuit 23 is closed and the battery 2
Power is supplied to the electromagnet 6 from 0.21, and the electromagnet 6 is excited and exerts an attraction action.As a result, the iron piece 11 is attracted to the electromagnet 6, and the rotating lever 10 is rotated about the support shaft 8 as a fulcrum. It rotates from the state shown by the solid line in Figure 4 to the state shown by the imaginary line.

Engagement groove 1 of wooden plate 10b of rotation lever 10 when rotating
The crank pin 15 that engages with the crankshaft 2 rotates as if pushed up together, and a rotational driving force is applied to the crankshaft 14.
The clunder shaft 14 rotates together with the flywheel 16.

Therefore, the crank pin 15 is moved from B to B' in FIG.
When the crankshaft 14 rotates a little less than 1/4, the conductive area A of the switch mechanism 24 in the right half passes the fixed position P of the contact piece 26, and the insulating coating 14
b opens the circuit 23, thereby demagnetizing the electromagnet 6 and releasing the attraction action of the iron piece 11, and the rotating lever 10 becomes free.

At this time, the crankshaft 14 is further rotated by the rotational inertia of the flywheel 16, which is rotated together with the shaft 14 by the rotational driving force caused by the attraction action of the electromagnet 6 at a certain time when the circuit is closed, and is brought into the above-mentioned free state. The actuating lever 10 is now rotated so as to pull down its horizontal plate portion 10b.

Then, when the crankshaft 14 rotates a little more than 3/4, the 1/4
Combined with the weak rotation, this means that the conductive range part A of the switch mechanism 24 again reaches the fixed position P of the contact piece 26, and as before, the circuit 23 is closed and the electromagnet 6 moves to the fourth position. The iron piece of the rotating lever 10, which has returned to the state shown by the solid line in the figure, is sucked again and the lever 10 is rotated, thereby pushing the crank pin 15 up within the range of B-B', and the crankshaft 1
4 and increases the rotational inertia of the flywheel 16.

By repeating this, the rotating lever 10 swings back and forth at a high speed using the support shaft 8 as a fulcrum, and at the same time, the crankshaft 14 continues to rotate at a constant high speed.

Thus, the rotation of the crankshaft 14 is transmitted to the front right wheel 4b by the V pulley 17 and belt 18, and the front left axle 4a rotates together with the wheel 4b via the axle 2.
As a result, the free rear wheels 4 C and 4 d are also driven to rotate, and the vehicle main body 1 can smoothly travel forward.

Note that the push-up operation position of the actuating lever 10 accompanying the closing of the circuit is always such that the crank pin 15 is in the position from B to B shown in FIG.
', otherwise the operating lever 10 is in a free state by opening the circuit, so that the operating lever 10 does not interfere with the rotation of the crankshaft 14, and almost no power loss occurs. It looks like this.

In addition, in the above embodiment, the crank pin 5 is connected to B-B.
In the above range, the circuit is closed and the actuating lever 10 is pushed up. From the line N below the line M in Figure 4 to the support shaft 8
The operating lever 10 may be pushed up by the electromagnet 6 within a rotation range of approximately 180 degrees from the position slightly deviated to the side to B'.

This invention, as described in detail above, rotates the reciprocating lever in one direction by the suction action of the iron piece when the electromagnet is energized, thereby applying a rotational driving force to the crankshaft, which causes the crankshaft to move together with the flywheel to a predetermined position. When the angle is rotated, the switch mechanism opens, the electromagnet is demagnetized, and the attraction action is released, thereby freeing the reciprocating lever and allowing the rotational inertia of the flywheel to rotate the crankshaft and return the lever to the other direction. When the crankshaft rotates once, the switch mechanism closes and the reciprocating lever is rotated to one side as before by the attraction action of the electromagnet, giving rotational driving force to the crankshaft. The suction action and the inertia action of the flywheel cause the reciprocating lever to swing back and forth repeatedly, thereby continuing to rotate the crankshaft, thereby allowing the vehicle to travel on wheels.

Therefore, the rotational drive due to the attraction action of the electromagnet that occurs when the switch mechanism opens and closes, and the return to rotation due to the inertia of the flywheel that occurs when the attraction is released, work well together, allowing extremely smooth running with very little power loss. It has a very simple structure, is easy to manufacture and assemble, and can be provided at a low cost.The mechanism of the drive and transmission means is easy for children to understand, and it is easy to handle, and the movements of levers etc. are very interesting. It is extremely suitable as a traveling toy that also serves as a learning tool for children.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention; Fig. 1 is a rear view, Fig. 2 is a plan view, Fig. 3 is a sectional view taken along line III in Fig. 2, and Fig. 4 is an enlarged view of the main parts. FIG. 1... Traveling vehicle body, 4a to 4d... Wheels,
6... Electromagnet, 10... Operating lever, 11...
... Iron piece, 12 ... Engagement groove, 14 ...
... Crankshaft, 15 ... Crank pin, 17
, 18... Transmission means, 20.21...
Battery, 24...Switch mechanism.

Claims (1)

[Scope of utility model registration request] It has an electromagnet attached to the main body of the traveling vehicle, a piece of iron that faces the electromagnet and is attracted at one end, and has a retaining groove at the other end, so that the bent middle part of the main body is rotated by the attraction action of the electromagnet. a substantially inverted L-shaped reciprocating lever pivotably supported for reciprocating rotation;
The other end of this lever has a crank pin that reciprocally and slidably engages with the engagement groove, and is attached to the main body to rotate as the lever rotates back and forth, and rotates integrally with this crankshaft. The flywheel is installed in such a manner, a transmission means for transmitting the rotation of the crankshaft to the wheels of the main body, and an electric circuit that connects the electromagnet and a battery mounted on the main body, and is opened and closed every rotation of the crankshaft. 1. An electromagnetically driven traveling vehicle toy, comprising: a switch mechanism; when the switch mechanism is closed, an electromagnetic attraction action causes a rotary lever to rotate, thereby applying rotational driving force to a crankshaft.