JPH0354793Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to a device for changing the direction of a traveling toy using radio control.

(Prior Art) Conventionally, there has been known a direction changing device for a radio-controlled traveling toy, in which left and right wheels are driven by a motor, and the direction is changed based on the difference in the number of revolutions between the right wheel and the left wheel.

(Problems to be Solved by the Invention) However, since the conventional direction changing device is configured to control the rotation of the left and right wheels using two motors, two motors are required to control the rotation of the left and right wheels. Not only does this require high costs, but it is also difficult to control the two motors to the same rotation speed, resulting in poor straightness.

(Means for solving the problem) This invention is a direction changing device for a radio-controlled traveling toy, in which the left and right wheels are driven by a motor, and the direction is changed by the difference in the number of revolutions between the right wheel and the left wheel. , a movable base 2 that can be moved in the left-right direction from a neutral position is provided in the steering section of the toy concrete base 1, and the movable base 2 is biased to the neutral position by springs 3 and 4, and the base 1 is movable. A pair of left and right large-diameter interlocking gears 5, 6 and a pair of left and right small-diameter interlocking gears 7, 8 are coaxially supported near the stand, and each of the interlocking gears 5 to 8 is rotationally driven by a single motor 9. The left and right wheels 10 and 11 are coaxially attached to the movable platform 2 by means of split rotation support shafts 12 and 13, and the left wheel rotation support shaft 12 and the right wheel rotation support shaft 13 are When the movable base 2 is in the neutral position, the left large-diameter interlocking gear 5 on the base side
The movable base 2 meshes with the large-diameter interlocking gear 6 on the right side.
A pair of left and right control small diameter movable gears 15, 16 that alternately mesh with and disengage from the left and right large diameter interlocking gears 5, 6 when the movable base 2 is in the neutral position. A pair of left and right large-diameter movables for control that mesh with and disengage from the left and right small-diameter interlocking gears 7 and 8 on the base side and alternately mesh with the left and right small-diameter interlocking gears 7 and 8 when the movable base 2 is moved leftward or rightward. The gears 17 and 18 are installed, the passive gears 27 and 28 that are always meshed with the left and right large-diameter movable gears 17 and 18 for control, and the left-hand threaded portion 2 for control.
1, a screw rod 20 having a right-hand threaded portion 22 and an intermediate threadless portion 23 is pivoted to the movable base 2; and a left-hand threaded portion 2 of this screw rod 20.
The present invention is characterized in that a pair of clutch shafts 31 and 32 that can be engaged and detached from the right-hand threaded portion 1 and the right-hand threaded portion 22, and a mechanism 30 for projecting and retracting the clutch shafts are provided on the toy body base 1 side.

(Operation) When the clutch shafts 31 and 32 are disengaged from the left-hand threaded portion 21 and the right-hand threaded portion 22 of the screw rod 20, the movable base 2 is in the neutral position as shown in FIG. In this state, the control small-diameter movable gears 15 and 16 of the movable base 2 are both engaged with the large-diameter interlocking gears 5 and 6 on the base 1 side, and the large-diameter control movable gears 17 and 18 are the small-diameter interlocking gears on the base 1 side. Since the gears 7 and 8 are engaged and disengaged from each other, when the motor 9 is operated in the forward running direction by radio control, the left and right wheels 10 and 11 are interlocked by the engagement of the gears 5 and 15 and 6 and 16. are rotated at the same rotation speed, and the toy body is driven straight in the forward direction. During this straight running, the screw rod 20 is moved between the gears 17, 27 and
Since the gears 8 and 28 are interlocked to rotate in one direction, the clutch shaft protrusion/retraction actuation mechanism 30 is activated by radio control, and one clutch shaft 31 rotates to rotate the left-hand threaded portion 21 of the screw rod 20. When the movable base 2 is protruded into engagement with the left-hand threaded portion 21, the movable base 2 is moved laterally to the left by the rotary screw feeding action of the left-hand threaded portion 21. When the movable base 2 is moved laterally to the left, the left-hand threaded portion 21 of the screw rod 20 is connected to the clutch shaft 31.
as shown in Fig. 2 (the clutch shaft 31
is located at the intermediate threadless portion 23 and screw feeding in the left direction is stopped), and this movable base 2
As a result of the lateral movement to the left, the small-diameter movable control gear 16 on the right side disengages from the large-diameter interlocking gear 6 on the base 1 side, and the large-diameter movable control gear 18 disengages from the small-diameter interlocking gear 8 on the base 1 side. 2. They mesh as shown in Figure 2.
At this time, the small-diameter movable gear 15 for control on the left side slides with respect to the large-diameter interlocking gear 5 on the base 1 side, but the meshing state is maintained without disengaging from the interlocking gear 5, so this left meshing gear 5 , 15 and the right meshing gears 8, 18, there is a difference in the rotation speed between the left wheel 10 and the right wheel 11. ), the toy body changes its direction and runs in the right direction as indicated by the arrow in FIG. 2.

In addition, when the other clutch shaft 32 protrudes and engages with the right-hand threaded portion 22 of the rotating screw rod 20 due to the operation of the clutch shaft protrusion/retraction actuation mechanism 30 by radio control, the rotating screw feeding action of this right-hand threaded portion 22 occurs. The movable base 2 moves laterally to the right. This lateral movement of the movable base 2 to the right is performed by the screw rod 2.
This movement continues until the right-hand threaded portion 22 of No. 0 is removed from the clutch shaft 32 as shown in FIG. Due to the lateral movement of the base 2 to the right, the small-diameter movable control gear 15 on the left side disengages from the large-diameter interlocking gear 5 on the base 1 side, and the large-diameter movable control gear 17 disengages from the small-diameter interlocking gear 7 on the base 1 side. and mesh as shown in Figure 3. At this time, the small-diameter movable gear 16 for control on the right side slides against the large-diameter interlocking gear 6 on the base 1 side, but it does not disengage from the interlocking gear 6 and maintains its meshing state.
These right side meshing gears 6, 16 and left side meshing gears 7, 1
Due to the difference in the gear ratio of 7, there is a difference in the rotation speed between the left wheel 10 and the right wheel 11, and this difference in rotation speed (the left wheel 10 rotates slowly and the right wheel 11 rotates quickly) causes the toy to move. The vehicle now changes direction to the left as shown by the arrow in FIG. 3 and runs.

(Embodiment) Below, an embodiment of this invention will be described with reference to the drawings. In the figure, 1 is a toy body base including the chassis or lower case of the toy body, and the steering section of this toy body base 1 has a position that is A movable base 2 that can be moved in the left-right direction is mounted by a sliding mounting structure using elongated holes and pins, a sliding mounting structure using bearings and guide rods, etc. It is urged to the neutral position by two springs 3 and 4.

Near the movable base of the base 1, there are a pair of left and right large-diameter interlocking gears 5, 6 and a pair of left and right small-diameter interlocking gears 7,
8 is coaxially supported by one rotating shaft rotatably supported by the base 1. Reference numeral 9 denotes one motor that is operated by radio control and is mounted on the base 1. By meshing the rotary drive gear 9a of this motor 9 with the large diameter interlocking gear 5, each of the interlocking gears 5 to 8 is connected to one motor. It is designed to be rotationally driven by a motor 9.

10 and 11 are divided rotational support shafts 1 on the movable base 2.
2 and 13 (this split rotation support shaft is rotatably supported by the left and right bearing plates of the movable platform 2 and the intermediate bearing 14), and the left and right wheels are coaxially attached to the left wheel rotation support shaft 12 and the right wheel. When the movable base 2 is in the neutral position, the rotary support shaft 13 meshes with the left large-diameter interlocking gear 5 and the right large-diameter interlocking gear 6 on the base side, so that the movable base 2 is moved leftward or rightward. a pair of left and right small-diameter movable gears 15, 16 for control that alternately mesh with and disengage from the left and right large-diameter interlocking gears 5, 6 when
When the movable base 2 is in the neutral position, it engages and disengages from the left and right small-diameter interlocking gears 7 and 8 on the base side, and when the movable base 2 is moved leftward or rightward, it engages alternately with the left and right small-diameter interlocking gears 7 and 8. A pair of left and right large-diameter movable gears 17 and 18 for control are attached.

Reference numeral 20 denotes a screw rod which is pivoted between the left and right bearing plates of the movable base 2 in parallel with the divided rotational support shafts 12 and 13, and this screw rod 20 is constantly connected to the left and right large-diameter movable gears 17 and 18 for control. It has passive gears 27 and 28 that mesh with each other, a left-handed threaded part 21 and a right-handed threaded part 22 for control, and an intermediate threadless part 23. 33 is the screw rod 20 on the base 1.
This bearing plate 33 has a pair of left and right clutch shafts 3 that can be engaged with and detached from the left threaded part 21 and right threaded part 22 of the screw rod 20.
1 and 32 are inserted and supported. Both clutch shafts 31 and 32 have a left-hand threaded portion 21 and a right-hand threaded portion 22.
The springs 31a, 32 are disengaged from each other.
a, and is pressed against a flat surface of a semicircular gear 34, which will be described later.

Reference numeral 30 denotes a mechanism for moving the clutch shafts 31 and 32 in and out, which in this embodiment includes a semicircular gear 34 pivoted on the toy body base 1, a pinion 35 meshing with the semicircular gear 34, and a mechanism for operating the clutch shafts 31 and 32 by radio control. The clutch shafts 31 and 32 are operated by a reversible motor 36 that rotates the semicircular gear 34 forward and backward within a certain angle range via the pinion 35.
It is also possible to apply a solenoid that activates the appearance and retraction.

Thus, the clutch shafts 31 and 32 are connected to the left-hand threaded portion 21 and the right-hand threaded portion 22 of the screw rod 20.
When the movable base 2 is disengaged from the base 1, the movable base 2 is in a neutral position as shown in FIG. 5 and 6, and the large-diameter movable control gears 17 and 18 are disengaged from the small-diameter interlocking gears 7 and 8 on the base 1 side. When actuated, said gears 5, 15 and 6, 16
The left and right wheels 10, 1 are interlocked by the meshing of the gears.
1 is rotated at the same rotation speed, and the toy body is driven straight in the forward direction. During this straight running, the screw rod 20 is
The screw rod 20 rotates in one direction by interlocking gears 18 and 28, so the clutch shaft protrusion/retraction actuation mechanism 30 is activated by radio control, and the screw rod 20 rotates one of the clutch shafts 31.
When the movable base 2 is engaged with the left-hand threaded portion 21 in a protruding manner, the movable base 2 is moved laterally to the left by the rotational screw feeding action of the left-hand threaded portion 21 . When the movable base 2 moves laterally to the left, the left-hand threaded portion 21 of the screw rod 20 comes off from the clutch shaft 31 as shown in FIG. This lateral movement of the movable base 2 to the left causes the control small-diameter movable gear 16 on the right to disengage from the large-diameter interlocking gear 6 on the base 1 side, and the control Large diameter movable gear 18
meshes with the small diameter interlocking gear 8 on the base 1 side as shown in FIG. At this time, the small diameter movable gear 15 for control on the left
slides on the large-diameter interlocking gear 5 on the base 1 side, but since the meshing state is maintained without disengaging from the interlocking gear 5, the left meshing gears 5, 15
Due to the difference in gear ratio between the right meshing gears 8 and 18, a difference in rotational speed occurs between the left wheel 10 and the right wheel 11.
1 rotates slowly), the toy body changes direction and runs in the right direction as indicated by the arrow in FIG. 2.

In addition, when the other clutch shaft 32 protrudes and engages with the right-hand threaded portion 22 of the rotating screw rod 20 due to the operation of the clutch shaft protrusion/retraction actuation mechanism 30 by radio control, the rotating screw feeding action of this right-hand threaded portion 22 occurs. The movable base 2 moves laterally to the right. This lateral movement of the movable base 2 to the right is performed by the screw rod 2.
This movement continues until the right-hand threaded portion 22 of No. 0 is removed from the clutch shaft 32 as shown in FIG. Due to the lateral movement of the base 2 to the right, the small-diameter movable control gear 15 on the left side disengages from the large-diameter interlocking gear 5 on the base 1 side, and the large-diameter movable control gear 17 disengages from the small-diameter interlocking gear 7 on the base 1 side. and mesh as shown in Figure 3. At this time, the small-diameter movable gear 16 for control on the right side slides against the large-diameter interlocking gear 6 on the base 1 side, but it does not disengage from the interlocking gear 6 and maintains its meshing state.
These right side meshing gears 6, 16 and left side meshing gears 7, 1
Due to the difference in the gear ratio of 7, there is a difference in the rotation speed between the left wheel 10 and the right wheel 11, and this difference in rotation speed (the left wheel 10 rotates slowly and the right wheel 11 rotates quickly) causes the toy to move. The vehicle now changes direction to the left as shown by the arrow in FIG. 3 and runs.

(Effect of the invention) Since the direction changing device in the radio-controlled traveling toy of this invention has the above-mentioned configuration, it can be controlled by a drive motor with one rotation speed for the left and right wheels, and the diameter of the left and right wheels can be controlled by one drive motor. If done correctly, it is possible to obtain near-ideal straightness. Further, the radius of rotation at the time of direction change is determined by the gear ratio of the meshing gears, and by appropriately designing this gear ratio, it becomes possible to change the direction to the left or right with a desired rotation radius.

[Brief explanation of drawings]

Fig. 1 is a diagram of a radio-controlled traveling toy equipped with the direction change device of the present invention in a straight running state, Fig. 2 is a diagram of a direction change in a right turn, and Fig. 3 is a diagram of a direction change in a left turn. . 1... Toy concrete base, 2... Movable stand, 3, 4...
... Spring for biasing the movable base, 5, 6... Left and right large-diameter interlocking gears, 7, 8... Left and right small-diameter interlocking gears,
9...Wheel drive motor, 10...Left wheel, 1
1...Right wheel, 12...Rotation shaft of left wheel, 13
...Rotation shaft of the right wheel, 15, 16... Small diameter movable gear for left and right control, 17, 18... Large diameter movable gear for left and right control, 20... Screw rod, 21
...Left threaded portion, 22... Right threaded portion, 23... Intermediate screwless portion, 30... Clutch shaft protrusion/retraction operating mechanism, 3
1, 32... A pair of clutch shafts.

Claims (1)

[Scope of utility model registration request] In a direction changing device for a radio-controlled traveling toy, in which the left and right wheels are driven by a motor and the direction is changed based on the difference in the number of revolutions between the right and left wheels, there is a device located on the base of the toy from a neutral position to the left and right. A spring-biased movable base is provided at a neutral position to be moved, and a pair of left and right large-diameter interlocking gears and a pair of left and right small-diameter interlocking gears are coaxially supported near the movable base of the base, and each of these interlocking The gears are driven to rotate by one motor, and
The left and right wheels are coaxially attached to the movable base by split rotation support shafts, and when the movable base is in the neutral position, the left large diameter on the base side is attached to the left wheel rotation support shaft and the right wheel rotation support shaft. a pair of left and right control small-diameter movable gears that mesh with the interlocking gear and the right large-diameter interlocking gear and alternately mesh with and disengage from the left and right large-diameter interlocking gears when the movable base is moved leftward or rightward; and the movable base. A pair of left and right large-diameter movable control gears mesh with and disengage from the left and right small-diameter interlocking gears on the base side when they are in the neutral position, and alternately mesh with the left and right small-diameter interlocking gears when the movable base is moved to the left or right. A gear is attached, and a driven gear that constantly meshes with the left and right large-diameter movable gears for control, and a screw rod having a left-hand threaded part, a right-hand threaded part, and an intermediate threadless part for control are pivoted to the movable base. , a pair of clutch shafts that can be engaged and disengaged from the left-hand threaded portion and the right-hand threaded portion of the screw rod; and a mechanism for moving the clutch shafts into and out of the toy body on the toy body base side. Conversion device.