JPS6130707Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a direction changing device for a remotely controlled traveling toy.

The purpose of this is to use commonly used inexpensive motors instead of using high-precision and expensive motors such as servo motors in devices that use motors to change direction. It is an object of the present invention to provide a device that enables reliable and quick direction change and also enables motor control with a simple configuration.

Another object of the present invention is to provide a direction changing device that can securely maintain a neutral position when there is no signal, thereby improving straight running performance.

In order to achieve the above object, this invention is equipped with a motor that rotates in forward and reverse directions, and has a series of reduction gear trains each having a idling gear that idles when the motor is overloaded.The output gear of this reduction gear train is A oscillating body having a oscillating pin is fixed to the shaft of the steering gear, and a neutral holding spring is provided on the steering gear to hold the steering gear in a neutral position. A steering plate is provided which engages with the pin and moves in the left-right direction of the vehicle body by the rocking of the rocking body, and this steering plate is connected to a wheel support body swingably disposed on the vehicle body,
The overload gear is characterized in that a braking gear connected to a braking means that operates in synchronization with the rotation of the motor is meshed with the overload gear.

An embodiment of this invention will be described below based on the drawings. In the figure, reference numeral 1 denotes a motor, which is rotated forward and backward by a remote control device (not shown), such as a receiving device, and is disposed on the upper part of the frame 2.

A drive gear 3 is attached to the drive shaft of this motor 1.
is fixed, and the driven reduction gear 5 of the reduction gear train 4 is meshed with the drive gear 3. Further, the output side gear 6 of the reduction gear train 1 meshes with a steering gear 7 that is vertically mounted on the frame 2 . Note that the reduction gear train 4 is provided with an idle gear 8 that idles when overloaded.

The steering gear 7 is formed by cutting a portion of a crown gear into a fan shape, and is intended to make the device more compact, but a normal crown gear may also be used.
A swing body 10 with a swing pin 9 projecting downward is fixed to the lower shaft end of the steering gear 7.

On the other hand, there is provided a steering plate 12 that engages with the swing pin 9 of the swing body 10 and moves in the left-right direction of the vehicle body 11 by the swing of the swing body 10, and this steering board 12 is swingably disposed on the vehicle body 11. It is continuous to the wheel support 13 that has been constructed.

Therefore, by rotating the motor 1 in forward and reverse directions, the steering gear 7 is oscillated via the reduction gear train 4, and this oscillation causes the wheel support 13 to be oscillated via the steering plate 12, so that the wheels 14 move forward. It points in a direction.

A pair of engagement pins 15 protrude from the upper surface of the steering gear 7 at positions symmetrical to the center line of the steering gear 7. On the other hand, a neutral holding spring 17 is provided in which both ends of a coil spring extend linearly to form an engaging end 16. They are arranged so that they engage with each other. Further, a stopper 18 is provided to protrude from the frame body 2 and abut the engaging end 16 from both outer directions in order to restrict the expanding of the engaging end 16 of the neutral holding spring 17. .

Therefore, when the steering gear 7 swings, an elastic force is generated in the neutral holding spring 17 to suppress the swing due to this swing displacement, and the steering gear 7
When the external rocking force is removed, the steering gear 7 is returned to the neutral position.

The reduction gear train 4 includes a driven reduction gear 5 that meshes with the drive gear 3 of the motor, an idle gear 8, and an output gear 6, which are rotatably provided on the same axis 19. A planetary reduction gear 20 that meshes with the driven wheel 5B of the output side gear 6 and the driving wheel 6A of the output side gear 6.
It consists of a shaft.

Incidentally, a cylinder 8A is extended from both sides of the idle gear 8 to form a drum-like shape as a whole, and the planetary reduction gear 20 is mounted on a shaft within the cylinder 8A.

The driven gear 5 is a drive wheel 5A made of a large-diameter gear and a driven wheel 5B made of a small-diameter gear, which are rotated in parallel. Further, the output side gear 6 is a drive wheel 6A made of a small diameter gear and a driven wheel 6B made of a large diameter gear, which are fixed and arranged side by side. Furthermore, the planetary reduction gear 20 includes a prime mover 20A made of a gear with a slightly larger diameter and a prime mover 20A.
A driven wheel 20B made of a smaller diameter gear is fixed to a rotating shaft 20C which is mounted on the idle gear 8. Therefore, in this reduction gear train 4, the driven reduction gear 5 and the planetary reduction gear 20 play a role of reduction, and the output side gear 6 plays a role of speed increase. This provides a deceleration effect.

The idle gear 8 of the reduction gear train 4 is provided with a brake means 2 that operates in synchronization with the rotation of the motor 1.
A series of brake gears 22 are meshed with each other.
The brake means 21 is provided with a solenoid 24 that rotatably holds a shaft 23 of a brake gear 22, and this solenoid 24 rotates when energized.
3 is suctioned, and the shaft end of the gear shaft 23 is configured to abut against a stopper plate 25 at the back of the solenoid 24.

Next, the operation will be explained. A current is sent to the motor 1 by a signal from a receiving device (not shown), and the motor 1 rotates clockwise, for example. The solenoid 24 of the brake means 21, which is connected to the receiving device in parallel with the motor 1, is also excited at the same time as the motor rotates once. Therefore, the brake gear shaft 23 is attracted by the solenoid 24 and comes into contact with the stopper plate 25 at the back of the solenoid 24 to prevent rotation of the brake gear shaft 23. Therefore, the rotation of the idle gear 8 that meshes with the brake gear 22 is also prevented.

The driven reduction gear 5, which has been rotated by the drive gear 3 of the motor 1, has an idling gear 8 and a brake gear 22.
As a result, the planetary reduction gear 20 mounted on the idling gear 8 is rotated, and this rotation causes the output side gear 6 to rotate. By the rotation of the output gear 6, the steering gear 7 that meshes with the output gear 6 is swung, and this oscillation causes the wheels to move through the oscillating body 10 and the steering plate 12 that engages with the oscillating body 10. The wheels 14 are directed in the traveling direction by swinging the support 13.

Note that if the motor 1 continues to operate even when the steering gear 7 is at the end of its swing, the idle gear 8 rotates the brake gear 22 and thereby idles. That is, the shaft 23 of the brake gear 22 comes into contact with the stopper plate 25 due to the suction of the solenoid 24, thereby preventing the rotation of the idling gear 8. However, when the steering gear 7 is at the end of its swing, the motor The rotational force of the motor 1 has no place to go, and the rotational force of the motor 1 becomes a force greater than the braking force generated by contacting the stopper plate 25, acts on the brake gear 22, rotates the brake gear 22, and becomes an idling gear. 8 is idle. Therefore, even if the motor 1 continues to rotate, the steering gear 7 and the gears 5, 6, 7, and 20 of the reduction gear train 4 will not be damaged.

Then, when the turning signal disappears, the current to the motor 1 and the solenoid 24 is cut off, the motor 1 stops rotating, and the solenoid 24 stops attracting the brake gear 22, making the brake gear 22 free. Therefore, this brake gear 2
In the free state 2, the steering gear 7 instantly returns to the neutral position due to the elastic force generated as the middle retaining spring 17 swings. Above, we have described a state in which the motor 1 rotates clockwise and the traveling toy turns left, but it is also possible to turn right in the same way by reversing the motor 1.

This invention is constructed as described above, and is provided with a motor 1 that rotates in forward and reverse directions, and a reduction gear train 4 having a idling gear 8 that idles when overloaded is connected to this motor 1. A steering gear 7 is meshed with the output side gear 6, and this steering gear 7
A rocking body 10 having a rocking pin 9 is fixed to the shaft, and a neutral holding spring 17 is provided to hold the steering gear 7 in a neutral position, and the rocking body 10 is moved in the left-right direction of the vehicle body 11 by rocking. The steering plate 12 is connected to a wheel support 13 swingably disposed on the vehicle body 11, and the idle gear 8 is provided with a brake means 21 which operates in synchronization with one revolution of the motor. Since a series of brake gears 22 are meshed, there is no need to use a high-precision and expensive device such as a servo motor, which is required in conventional devices that change direction using a motor, and the ordinary inexpensive motor 1 can be used. It can be used to provide a turning device.

That is, since the idle gear 8 is braked as the motor 1 rotates, the rotation of the motor 1 is transmitted to the steering gear 7 via the reduction gear train 4.
The steering gear 7 is oscillated, and this oscillation causes the wheel support 13 to oscillate via the oscillating body 10 and the steering plate 12, so that the wheels 14 can be directed in a desired direction.

In addition, the reduction gear train 4 has an idle gear 8 that idles when overloaded, and this idle gear 8 has a brake means 2 that operates in synchronization with one rotation of the motor.
Since the brake gear 22 which is connected to 1 is engaged,
Normally, the rotation of the motor 1 can be transmitted to the steering gear 7, so that direction changing operations can be performed reliably and quickly.

Also, the motor 1 rotates and the steering gear 7
After the steering gear 7 is positioned at the end of its swing, the steering gear 7 becomes unable to swing and normally the motor is overloaded, causing burnout. Since the reduction gear train 4 is provided with an idling gear 8 with which the brake gear 22 meshes, this idling gear 8 is connected to the brake means 2.
By overcoming the braking force of motor 1 and idling, motor 1
This prevents overloading. Therefore, even after the steering gear 7 has made a predetermined swing, the motor 1 can be kept rotating without stopping.
There is no need to use an expensive servo motor, and the configuration can be simplified, and its control can be simply by rotating the motor 1 in the forward or reverse direction, and the configuration of the receiving device itself of the remote control device can be simplified. .

In addition, the rocking body 10 that moves the steering plate 12 in the left-right direction of the vehicle body 11 is connected to the steering gear 7.
Since the steering gear 7 meshes with the output gear 6 of the reduction gear train 4 connected to the drive gear 3 of the motor 1, the steering gear 7 is always meshed with the output gear 6 and becomes unstable. Never shakes. Therefore, the wheel support 113 connected to the steering gear 7 also does not swing unstably, and has excellent straight-line stability.

The reduction gear train 4 includes a driven reduction gear 5 that meshes with the drive gear 3, an idling gear 8, and an output gear 6, which are rotatably disposed on the same axis 19. By configuring the planetary reduction gear 20 that meshes with the driven wheel 5B and the output side gear 6A on a shaft, the reduction gear train 4 having the idling gear 8 that idles during overload can be made compact and has a simple configuration. can.

Further, the brake means 21 includes a brake gear shaft 2
A solenoid 24 is provided to rotatably hold 3.
This solenoid 24 is connected to the brake gear shaft 2 when energized.
3 is sucked and the shaft end of the gear shaft 23 is connected to the solenoid 24.
By configuring it so that it comes into contact with the stopper plate 25 at the back, when it is energized, the brake force is applied by the friction generated between the shaft end of the gear shaft 23 and the stopper plate 25 due to the attraction of the gear shaft 23 by the solenoid 24. The configuration can be simplified. Furthermore, when a rotational force above a certain level is applied to the brake gear 22, the brake gear shaft 23 rotates against the braking force by overcoming the braking force caused by the friction with the stopper plate 25, thereby performing a torque limiter function. be able to.

As explained above, according to this invention, a direction change device can be provided with a simple configuration, and moreover, it can perform direction changes reliably and quickly, and can firmly maintain the neutral position when there is no signal, improving straight-line stability. This has various effects that are extremely useful in practice, such as the ability to

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is an overall plan view, the second figure is a partially cutaway side view, and the third figure is a partially cutaway side view.
The figures are a partially cutaway front view, FIG. 4 is a partially cutaway bottom view, and FIG. 5 is a longitudinal sectional view of the reduction gear train. 1...Motor, 2...Frame, 3...Drive gear,
4... Reduction gear train, 5... Driven reduction gear, 5A...
...Driving wheel, 5B...Driven wheel, 6...Output side gear,
6A...Motive wheel, 6B...Driven wheel, 7...Steering gear, 8...Idle gear, 9...Rocking pin,
10... Rocking body, 11... Vehicle body, 12... Steering plate, 13... Wheel support, 14... Wheel,
15... Engaging pin, 16... Engaging end, 17...
Neutral holding spring, 18... Stopper, 19...
Shaft, 20... planetary reduction gear, 20A... prime mover,
20B...driven vehicle, 20C...rotation shaft, 21...
Brake means, 22... Brake gear, 23...
Brake gear shaft, 24... Solenoid, 25...
stopper board.

Claims (1)

[Claims for Utility Model Registration] 1. A motor that rotates forward and backward is provided, and this motor is connected to a reduction gear train having a idling gear that idles when overloaded, and the output side gear of this reduction gear train is equipped with a steering wheel. A rocking body having a rocking pin is fixed to the shaft of the steering gear, and the steering gear is provided with a neutral holding spring that holds the steering gear in a neutral position, and the rocking pin of the rocking body is provided with a neutral holding spring that holds the steering gear in a neutral position. A steering plate is provided which engages with the oscillator and moves in the left-right direction of the vehicle body by the rocking of the rocking body. A direction changing device for a remotely controlled traveling toy, characterized in that a series of brake gears are meshed with a brake means that operates in synchronization with the rotation of a motor. 2. The reduction gear train is provided with a driven reduction gear that meshes with the driving gear, an idling gear, and an output gear, which are coaxially rotatable. A direction changing device for a remotely controlled traveling toy according to claim 1, which is constructed by mounting a planetary reduction gear meshing with a shaft. 3. The braking means is provided with a solenoid that rotatably holds the brake gear shaft, and when energized, the solenoid attracts the brake gear shaft and brings the shaft end of the gear shaft into contact with a stopper plate at the back of the solenoid. A direction changing device for a remotely controlled traveling toy as set forth in claim 1 or 2 of the registered utility model.