JPH0510877Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an engine starting/cooling device for a traveling toy equipped with a diesel engine.

[Prior Art and Problems to be Solved] Conventionally, some toys that use an engine as a power source for running, etc. are equipped with a glow engine or a diesel engine. In conventional toys, these engines are generally started by pulling a wound string.

By the way, the above-mentioned toys equipped with a diesel engine do not require batteries, ignition plugs, ignition cords, etc. for starting, unlike glow engines, so they require more operations and adjustments during startup than toys equipped with a glow engine. is easy.
However, diesel engines have a higher compression ratio than glow engines, so they require a greater amount of force to start, and the above-mentioned pulling method has the disadvantage that starting cannot be done easily and reliably.

[Means for Solving Problems] The present invention, which solves the above conventional problems, is an engine starting/cooling device for a traveling toy that starts a toy equipped with a diesel engine and cools the diesel engine. A flywheel is connected to the output shaft of the diesel engine, and the rotation of the flywheel is interlocked with the rotation of the diesel engine. A slanted hole whose opening is offset from the opening on the inner surface in the direction of rotation of the flywheel is provided, and a rotation device for externally rotating the output shaft of the diesel engine is provided, and the rotation device is connected to the handle and the rotational direction of the flywheel. It is composed of a transmission gear section that accelerates and transmits the rotation of the handle, and a transmission shaft that transmits the rotation accelerated by the transmission gear section to the output shaft.

[Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 to 9 show a running toy equipped with a starting device according to an embodiment of the present invention. In the figure,
The running toy is equipped with a diesel engine 1 for small toys, a flywheel 2, a starter device 20, a direction change device 30, a gear group 3, etc. on a chassis 4,
A body 5 imitating the shape of a car is placed on top of this.

The diesel engine 1 sucks in a mixture of air and fuel mixed with kerosene, ether, lubricating oil, etc., burns it to generate power, and outputs an output shaft 1.
This is to drive rotation of a. In this embodiment, since the diesel engine 1 is used as the power source, parts such as an ignition plug, ignition cord, and battery required for a glow engine are unnecessary, and the structure is simplified and the starting operation is made easier. There is.

FIG. 4 shows the structure of the diesel engine 1. Here, the diesel engine 1 has an output shaft 1
It consists of a cylinder body 1b, a piston 1d connected to a crank 1c, and a cylinder head 1e attached to the upper part of the cylinder body 1b. Of these, the combustion chamber 1f provided inside the cylinder head 1e
is formed to have a conical cross section as shown in the figure, thereby improving the ignition efficiency.

The flywheel 2 is connected to the output shaft 1a and rotationally driven by the power of the diesel engine 1. This flywheel 2 exerts a gyroscope effect by rotating and maintains a stable posture during wheelie running, single-wheel running, etc. To maximize the effect, the chassis 4 and body 5 are The dimensions, weight, etc. shall be determined taking into consideration the size and overall weight.

This flywheel 2 has four long holes 2a,
2a are provided radially. These long holes 2a are
Rotation direction of flywheel 2 (direction of arrow A in the figure)
On the other hand, the opening of the elongated hole 2a on the outer side of the flywheel 2 when viewed from the diesel engine 1, that is, the upper surface, is provided as an inclined hole that is shifted in the direction of rotation from the opening on the inner surface so that the upper surface side thereof runs. . That is, as the flywheel 2 rotates, air on the upper surface side flows downward along the wall W of the elongated hole 2a,
By blowing in the direction of the diesel engine 1, a cooling effect of the diesel engine 1 can be obtained.

The gear group 3 includes a gear 6 provided on the output shaft 1a,
It consists of three intermediate gears 7, 8 and 9 and a crown gear 11 supported on a rear axle 10. These gears sequentially mesh to transmit the rotation of the output shaft 1a at a reduced speed, thereby rotationally driving the rear axle 10. A crown gear 11 and a sprocket 12 are fitted to the rear axle 10 as shown in the figure. These each have a clutch portion 11a, 12a, and are pressed against each other by a spring 13 to mesh with each other. For this reason, normally the power from the diesel engine 1 is transmitted to the rear axle 10, but if a load above a certain level is applied to the rear axle 11, the clutch parts 11a and 12a will slip, causing the crown gear 11 to spin idle and the diesel engine 1 and the gear group 3 will not be damaged.

The sprocket 12 is connected to a sprocket 16 of a front axle 15 by a chain belt 14, and when the rear axle 10 is driven, the front axle 15 is also driven at the same time. That is, the running toy is configured to drive the front wheels 17 and the rear wheels 18 to rotate simultaneously, thereby running in four-wheel drive.

The starting device 20 controls the rotation of the rotating device 21 through a gear 6.
and an intermediate gear 7, which is configured to transmit the power to the flywheel 2 and the output shaft 1a of the diesel engine 1 via a starting gear 22 consisting of an intermediate gear 7.

The rotation device 21 applies the rotation required for starting the diesel engine 1 to the output shaft 1a, and is composed of a case body 23, a handle 24, a transmission gear portion 25, and a transmission shaft 26 as shown in FIG.
The handle 24 is attached to a rotary shaft 24a rotatably provided in the case body 23. The transmission gear portion 25 is connected to the case body 2 of the rotating shaft 24a.
A gear 25a provided in a portion located within 3;
A gear 25b meshing with the gear 25a, and a gear 25b.
It is composed of a bevel gear 25c provided coaxially with the bevel gear 25c, and a bevel gear 25d provided at one end of the transmission shaft 26 meshing with the bevel gear 25c. Further, the transmission shaft 26 is rotatably attached to the lower part of the case body 23. With this structure, when the handle 24 is held and rotated, the rotation is accelerated by the transmission gear portion 25 and transmitted to the transmission shaft 26.

Next, the starting gear 22 is configured using a gear 6 and an intermediate gear 7 that transmit the rotation of the output shaft 1a of the diesel engine 1 to the rear axle 10. A fitting member 27 into which the tip of the transmission shaft 26 of the rotating device 21 fits is integrally attached. Here, the tip of the transmission shaft 26 is formed to have a polygonal cross section, and the fitting portion 27 is formed with a polygonal fitting hole 27a that matches the shape of the tip of the transmission shaft 26. Further, the fitting member 27 is positioned so as to protrude from the upper surface of the body 5.

That is, the tip of the transmission shaft 26 of the rotating device 21 is
As shown in the figure, when the fitting member 27 is fitted into the fitting hole 27a and the handle 24 is rotated in a predetermined direction, the rotation of the transmission shaft 26 is transmitted to the output shaft 1a of the diesel engine 1 via the intermediate gear 7 and the gear 6. The diesel engine 1 is started. In the diesel engine 1, the compression ratio is generally higher than that of a glow engine, so a large force is required to start the engine by rotating the output shaft 1a, making it difficult to start.
In this embodiment, since the flywheel 2 is connected to the output shaft 1a, the inertial force of the flywheel 2 acts when rotation is applied by the rotating device 21, making it easier to start the diesel engine 1.
That is, when the handle 24 of the rotating device 21 is turned by a certain amount by applying a certain force, rotational force is applied to the output shaft 1a by the inertial force of the flywheel 2.
There is no need to apply any more force to the handle 24, and starting can be easily performed with a small force.

The direction changing device 30 includes a gear portion 31 and a cam 32.
and a vertically movable pin 33. The gear portion 31 is a gear 31 fixed to the front axle 15.
a, a plurality of gears are incorporated, including intermediate gears 31b, 31b that transmit the rotation of the gear 31a to the cam 32, and a gear 31c provided coaxially with the cam 32, among which the intermediate gears 31b, 31b and the gear 31c are provided;
are supported by frame members 34 provided on the chassis 4, respectively. The cam 32 is a disk cam and is integrally provided on the rotation shaft of the gear 31c. The cam 32 is provided outside the frame member 34 as shown.

The vertical movement pin 33 is slidably held by a holding portion 35 provided on the chassis 4, and its lower end portion 33a penetrates from the lower surface of the chassis 4 and extends downward. Further, the upper end portion 33b is located opposite to the cam 32 from below. Then, the holding member 35 and the upper end portion 33 of the vertical movement pin 33
A spring spring 36 is attached between
It is in pressure contact with the

With the structure of the direction changing device 30 as described above,
When the front axle 15 is rotated by the chain belt 14 when the traveling toy is running, the rotation is decelerated by the gear part 31 and transmitted to the cam 32.
rotates eccentrically. The eccentric rotation of the cam 32 pushes the vertically movable pin 33 downward at regular intervals. When this vertically movable pin 33 is pushed down, one (left side) of the front wheel 17 is raised from the running surface, and the vehicle performs a U-turn, spin, etc. using the vertically movable pin 33 as a fulcrum. Then, due to the combination of the direction change by the vertical movement pin 33 and the gyroscope effect by the flywheel 2,
This provides a very unique and interesting driving condition.

A guide 37 having a tapered surface 37a is provided on the lower surface of the chassis 4 in front of the vertical movement pin 33 as shown in the figure.If an obstacle is encountered while the traveling toy is traveling, the guide 37 This allows the vertical movement pin 33 to overcome the obstacle and not be directly caught by the obstacle.

The body 5 is placed on the chassis 4 with the diesel engine 1, flywheel 2, gear group 3, and direction changing device 30 covered thereon. The body 5 is formed in a shape imitating the shape of a car,
On both sides, there are support members 4 that imitate door mirrors.
0 and 40 are provided to protrude laterally. When the running toy runs on one wheel, the support members 40, 40 prevent the running toy from falling due to its tip hitting the running surface, and enable stable one-wheel running due to the gyroscope effect. It is for. In addition, auxiliary wheels 4 are provided on both sides of the rear of the body 5.
1 and 41 are rotatably provided. This training wheel 4
1 and 41 are for keeping the running condition stable when the running toy runs a wheelie. When the running toy runs in a wheelie due to the wheel effect, the auxiliary wheels 41 and 41 touch the running surface and the Supports posture.

Note that a fuel tank 42 for storing fuel inside is attached to the side surface of the body 5 of the traveling toy. Further, the fuel tank 42 is connected to the diesel engine 1 by a pipe, so that fuel can be sent to the diesel engine 1 through the pipe.

Next, the operation of the above traveling toy will be explained.

First, the chassis 4 of the running toy is placed on a stand at a predetermined height so that the front wheels 17 and rear wheels 18 are lifted from the running surface, and the transmission shaft 26 of the rotating device 21 is connected to the fitting member 27. Fit into the matching hole 27a. When the handle 24 of the rotating device 21 is turned in this state,
The output shaft 1a of the diesel engine 1 and the flywheel 2 start rotating via the intermediate gear 7 and the gear 6.

By the rotation of the output shaft 1a, the diesel engine 1 starts by exploding and burning the fuel sucked from the fuel tank 40, and rotates the output shaft 1a and the flywheel 2 at high speed. In addition, the output shaft 1a
The rotational driving force is appropriately decelerated by the gear group 3 and transmitted to the rear wheels 18 and the front wheels 17 as described above,
Drives both wheels.

If the running toy is taken down from the stand and placed on a running surface such as the floor in this state, the running toy will run on four wheels at an appropriate speed while rotating the flywheel 2 at high speed.
When the flywheel 2 rotates at high speed, a gyroscope effect works to keep the running condition of the running toy constant, and the toy runs in a stable state without being blown off by unevenness on the road surface. For example, if the vehicle runs on one wheel, that running state is maintained due to the gyro effect, and if the front wheel 17 is raised to perform a wheelie run, stable running is achieved while maintaining the wheelie run state.

In addition, as described above, the vertical movement pin 33 of the direction change device 30 moves up and down to perform direction changes such as U-turns and spins, so in combination with the above-mentioned gyro effect, unexpected and extremely varied running conditions can be created. is obtained.

Furthermore, in conventional running toys that use an engine as a power source, if the vehicle body is tilted and fuel is temporarily cut off from the fuel tank, the engine may stop. The traveling toy of this embodiment has the output shaft 1 of the diesel engine 1 as described above.
Since the flywheel 2 is connected to the output shaft 1a, even if the fuel supply is temporarily stopped and the diesel engine 1 is stopped as described above, the output shaft 1a continues to rotate for a certain period of time due to the inertia of the flywheel 2. Therefore, if the attitude of the vehicle body returns to its original state while the vehicle is rotating and fuel is supplied, the diesel engine 1 will start again and continue traveling.

In the embodiment, the rotation is transmitted to the front wheels 15 by the chain belt 14, and the vehicle runs in four-wheel drive. However, it is also possible to drive only the rear axle 10 to drive the vehicle in two-wheel drive.

In the above embodiment, the starting gear 22 is connected to the output shaft 1a of the diesel engine 1,
The transmission shaft 2 of the rotating device 21 is connected to the intermediate gear 7.
6 is shown, but if the fitting member 27 is provided directly on the output shaft 1a, the starting gear 22 is not necessarily necessary. Furthermore, the structure of the transmission gear section 25 that transmits the rotation of the handle 24 of the rotating device 21 to the transmission shaft 26 is not limited to the illustrated structure, but any structure that can accelerate the rotation of the handle 24 and transmit it to the transmission shaft 26 can be used. good. In addition, the transmission gear part 25 and the transmission shaft 26 are incorporated into the traveling toy side,
It is also possible to configure only the handle 24 to be detachable.

[Effects of the invention] As described above, the present invention connects a flywheel to the output shaft of a diesel engine, and provides a rotating device consisting of a handle, a transmission gear section, and a transmission shaft that rotates the output shaft from the outside. As a result, the flywheel rotates in conjunction with the output shaft, and its inertial force acts as an aid, making it possible to start the engine easily with an extremely small amount of force compared to conventional pulling systems. In addition, in the conventional pulling method, the amount of rotation applied to the output shaft of the engine could not be adjusted and remained constant, but the present invention has a structure in which the handle is rotated, so the amount of rotation can be easily adjusted. It also has an effect.

Furthermore, by providing an inclined hole in the flywheel provided on the diesel engine output shaft, cooling air is blown onto the engine as the engine rotates, making it possible to create a cooling engine with a simple configuration. .

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of the present invention, Fig. 2 is a side sectional view thereof, Fig. 3 is a longitudinal sectional view thereof, Fig. 4 is a sectional view of the diesel engine, and Fig. 5 is a perspective view of the starting device. Figure 6 is a cross-sectional view of the rotating device used in the starting device, Figure 7 is a side view of the direction changing device, Figure 8 is a front view of the direction changing device, and Figure 9 is another embodiment of the direction changing device. FIG. 1... Diesel engine, 1a... Output shaft,
2... Flywheel, 4... Seat, 5...
Body, 7, 8, 9... Intermediate gear, 20... Starting device, 21... Rotating device, 24... Handle, 2
5...Transmission gear portion, 26...Transmission shaft, 30...Direction changing device, 32...Cam, 33...Vertical movement pin, 40...Support member, 41...Auxiliary wheel, 42...
...fuel tank.

Claims (1)

[Claims for Utility Model Registration] An engine starting/cooling device for a running toy, characterized by having the following requirements for starting a toy equipped with a diesel engine and cooling the diesel engine. (a) A flywheel is connected to the output shaft of the diesel engine, and the rotation of the diesel engine and the rotation of the flywheel are linked. (b) A hole penetrating the flywheel in the flywheel, the opening on the outer surface of the flywheel being deviated from the opening on the inner surface in the direction of rotation of the flywheel when viewed from the diesel engine. will be established. (c) A rotating device is provided to apply rotation to the output shaft of the diesel engine from the outside. (d) The rotating device includes a handle, a transmission gear portion that accelerates and transmits the rotation of the handle, and a transmission shaft that transmits the rotation accelerated by the transmission gear portion to the output shaft.