JPH0727987Y2 - Automatic traveling direction conversion device for traveling toys such as toy cars - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a general traveling toy such as a toy car which automatically changes its direction when traveling is stopped.

2. Description of the Related Art Conventional toys include a toy vehicle that has an obstacle in the traveling direction and is blocked from proceeding, and that automatically changes the traveling direction of the vehicle to proceed in a new direction that is not obstructed.

In this type of toy, for detecting an obstacle in the traveling direction, firstly, for example, a front bumper is attached to the tip of a movable rod biased in the forward direction by a spring, and the bumper collides with an obstacle as the vehicle advances. Then, the bumper is pressed to actuate the movable rod by expanding the spring, and the transmission gear of the traveling power mechanism related to the movable rod is engaged, for example, by changing the rotation direction of the power rear wheel from forward to reverse. Reverse the direction of travel. The front wheel is provided, for example, on a caster wheel, is supported so as to go straight when moving forward, and is provided so as to rotate and turn about a pivot axis when moving backward in reverse, and cooperates with the power rear wheel to drive the vehicle. The traveling direction is changed, the power wheels are again switched to the forward direction, the vehicle travels in a new direction, the obstacle is avoided, and the traveling is continued.

Second, when the vehicle collides with an obstacle and its progress is blocked, the power wheels automatically change the driving direction. It is horizontally supported by a pivot shaft and power shaft vertically installed in the front part, and a crown gear attached to the lower end of the power shaft meshes with a gear on the axle to move forward in balance with the driven wheels of the rear wheels. When the vehicle travels and its forward movement is blocked, the balance is lost and the support frame rotates, turning the power wheels around the pivot,
It changes the forward direction and avoids the obstacles. It rebalances and moves forward in a non-obstructive direction, known as the mystery drive.

Problems to be Solved by the Invention The conventional automatic direction changing device lacks speed and reliability. That is, in the one in which the drive gear is switched by the collision operation of the first drive wheel by the bumper collision operation, the rotation of the drive wheel is simply reversed, and the traveling direction of the vehicle is changed by the rotation of the caster wheel that follows when traveling backward. If the track surface is slippery such as a plastic tile, sufficient resistance cannot be obtained between the caster wheel and the road surface, and in the case of a carpet, the resistance is large and the caster wheel does not rotate. is there. In the mystery drive in which the second drive wheel rotates, since the balance is achieved, the traveling speed is low, the speed is not sufficient, and the condition of the road surface is particularly susceptible.

Means for solving the problem In a vehicle, an obstacle detection operation such as a bumper that protrudes in the traveling direction, moves in the opposite direction when a collision occurs and becomes an operation force, and urges to return to the original position when it separates from an obstacle A force conversion mechanism, caster-type front wheels arranged on the front side in the traveling direction of the vehicle, and left and right rear wheels as driving wheels arranged on opposite opposite rear sides are provided. The divided left drive axle and right drive axle are attached to the outer ends of the left drive axle, and the left drive axle rotates the gear on the shaft by meshing with the transmission gear of the motor and the left pinion attached to its inner end. Is internally mounted in a differential gear type reversing machine casing that is supported on one side with the same shaft core, and a right pinion is also attached to the inner end of the right drive axle. Turn both pinions into a differential gear type reversing machine housing When the differential gear type reversing machine casing is engaged with the rotatably supported crown gear and stopped by stopping the differential gear type reversing machine casing, the right driving axle is provided so as to be capable of reversing, and the right driving axle in the differential gear type reversing machine casing is provided. Of the differential gear type reversing machine casing is extended outwardly, rotatably supported on the machine frame, and meshed with the inner end of a transmission cylinder with a moderation spring claw on its outer end. Rotating and rotating in opposite directions, the tip of the moderation spring claw is pressed against the inner diameter engaging tooth of the wheel to which the outer end of the right drive axle is fixed, to obtain a proper resistance. , The right rear wheel is rotatably provided, and the clutch shaft that operates by receiving the operation force of the obstacle detection operation force conversion mechanism is urged toward the operation force related side by a spring, and its return direction is set to the tip. The operating plate with the cam claws is supported, and the corresponding machine frame side wall is inserted. , The stop claw is fitted to hold the clutch shaft in a fixed position, and when the clutch shaft is moved by receiving the operating force of the bumper, the stop claw escapes from the drop hole and becomes free, and The gear provided on the shaft meshes with the transmission gear to rotate, and the stop claw rubs the inner surface of the side wall of the machine frame with the action of the spring, and the operating force of the bumper etc. disappears until it is fitted into the drop hole again. Is also provided so as to maintain the position moved by the operating force, and further the clutch pawl teeth are supported on the shaft so as not to rotate, and when the engagement position is moved by the operating force of the bumper, the differential It is provided so as to mesh with the annular teeth formed on the outer periphery of the gear-type reversing machine casing and stop it.At this time, the drive axle moves the wheel opposite to the left drive axle by sliding the moderation spring pawl to stop. Reverse rotation, these two rear wheels The automatic traveling converter of the running toy toy automobile or the like, characterized by turning converting the travel direction about the certain.

Operation Since the device of the present invention has the above-described structure, for example, when the motor is turned on, the rotation is transmitted and the left and right rear wheels are rotated, so that the vehicle travels forward. When it hits an obstacle, the bumper moves backward, and the clutch shaft moves due to the operation, the cam claw on the clutch shaft comes out from the drop hole of the machine frame, and the gear on the shaft meshes with the rotary transmission gear. Since the clutch claw teeth on the shaft mesh with the annular teeth of the differential gear type reversing machine casing, the rotation is blocked and the rotation is stopped. Therefore, one of the left drive axles is transmitted and rotated as it is, and the other of the right drive axles is converted into reverse rotation to be transmissionly rotated. Therefore, since the left rear wheel and the right rear wheel rotate in opposite directions, the vehicle turns right and moves away from the obstacle. Even if the bumper separates from the obstacle and returns to the original state, the clutch shaft keeps the moving state by contacting the cam claw with the inner surface of the side wall of the machine frame, so that the clutch shaft stops the differential gear type reversing machine casing. To continue the right turn operation.
Then, when the clutch shaft rotates by a required angle, the cam claws coincide with the drop holes, so that the cam claws fall and separate from the transmission gear to stop the rotation. At the same time, the clutch pawls release the differential gear type reversing machine casing. Then, the left and right rear wheels rotate in unison with each other and travel forward in the new direction after the turning conversion. The above is performed every time the vehicle collides with an obstacle, and the traveling is continued.

Embodiment Hereinafter, the present invention will be described with reference to the drawings which are embodiments,
A caster-type front wheel 2 and left and right rear wheels 3a and 3b, which are drive wheels, are pivotally supported on the body plate 1. The left and right rear wheels 3a, 3b are fixed to a left drive axle 5 and a right drive axle 6 which are independently supported in a prime mover frame 4 provided on the rear portion of the vehicle body plate 1,
It is provided so that it can be operated separately.

The bumper 7 protrudes forward from the vehicle body plate 1 and is slidably supported by the supporting rods 8 and 8 in the front-rear direction, and the rear end 9 of the supporting rod 8 is always urged forward by the spring 10 to serve as a relay interlocking rod. The spring 10 is provided so as to extend backward when the obstacle 11 is engaged and rotated forward and collides with an obstacle in the forward direction so as to be rotatable rearward.

The spring 10 is hooked on the front end of the clutch operating rod 12,
Pull it forward to engage the engaging groove at the front end of the clutch operating rod 12.
13 is engaged with the relay interlocking rod 11 and is moved rearward by its operation to operate an inclined cam 14 provided at the rear end of the relay interlocking rod 11. The clutch pawl teeth 17 in the direction of the differential gear type reversing machine casing 18
It is provided so as to mesh with the annular teeth 19 provided on the outer periphery of the machine casing 18 to stop the rotation of the machine casing 18.

The transmission gear 21 pivotally supported by the prime mover frame 4 receives rotation of a motor (not shown) in its large diameter gear portion 21a and rotates,
It is transmitted from the small diameter gear portion 21b to the large diameter gear portion 22a of the gear 22, and the left drive axle 5 to which the gear is attached is rotated. Therefore, the left rear wheel 3a attached to the outer end is rotated forward. The inner end is supported by a differential gear reversing machine casing 18 and a left pinion 24 is attached, and this pinion 24 is meshed with a crown gear 25 supported in the differential gear type reversing machine casing 18 to rotate it. When this crown gear is meshed with the right pinion 26 fixed to the inner end of the right drive axle 6, and the differential gear type reversing machine casing 18 is forcibly stopped, the right drive axle 6 is moved to the left drive axle 5.
It is provided so that it can rotate in the reverse direction.

A wheel 27 is fixed to the outer end of the right drive axle 6, and a rubber tire 28 is fitted on the wheel 27 to form a right rear wheel 3b. The inner diameter surface of the wheel 27 is formed with engaging teeth 29.

The transmission cylinder 30 is fitted to the right drive wheel 6, the inner end of which is engaged with the differential gear type reversing machine casing 18 to rotate integrally, and the moderation spring claws 31 and 31 are provided at the opposite outer ends. . The moderation spring claws 31 and 31 are pressed against the engaging teeth 29 of the wheel 27 to obtain an appropriate mutual rotation resistance, and the differential gear type reversing machine casing 18 and the wheel 27 can rotate integrally. When the differential gear type reversing machine casing 18 is stopped, the wheels 27 are provided so as to be able to rotate in directions opposite to each other over the holding resistance of the moderation spring claws 31, 31.

When the differential gear type reversing machine casing 18 is free from the above structure, the left drive axle 5 and the right drive axle 6 rotate integrally. Therefore, the left and right rear wheels 3a and 3b integrally rotate in the same direction to move the vehicle 38 forward.

The end portion of the clutch shaft 15 is provided with an operating plate 33 having cam pawls 32, 32 on its outer surface for maintaining the state of moving to the right in the axial direction by half a rotation, and a rotation gear 34 inside thereof. The left end of the clutch shaft 15 is provided so as to project outward from the left side of the machine frame by an appropriate length from the tips of the cam claws 32, 32, and the cam claws 32, 32 are provided on the left side wall 4a of the machine frame 4. When it falls in line with the drop holes 35, 35, the tilt cam 14
It is provided so as to be reached by the action of the spring 16 in the working passage.

The clutch claw teeth 17 are formed so that the rear half portion thereof has a lateral triangular shape that engages with the bearing guide 36 and is slidable in the lateral direction, but is provided so as not to rotate. Clutch claw teeth 17 and rotating gear plate 34
A collar 37 is fitted between and.

Since this invention is constructed as described above, when the motor rotates, the gear 21 rotates and the gear 22 rotates as described above.
To drive the left drive axle 5 to rotate and engage the engaging teeth of the wheel 27.
Since the 29 and the moderation spring claws 31 and 31 are in pressure contact with each other, a rotational resistance is generated, and therefore, the left drive axle 6 and the transmission cylinder 30 are integrated with each other to perform the same rotation as the differential gear type reversing machine casing 18. Therefore, the left and right rear wheels 3a and 3b integrally rotate forward.

Next, when the vehicle 38 collides with an obstacle, the bumper 7 moves backward together with the supporting rod 8, and the relay interlocking rod 11 connected to the bumper 7 is moved backward around the fulcrum bearing plate 11a to engage the relay interlocking rod 11. The operating rod 12 is moved backward by extending the spring 10, and the tilt cam 14 formed at the rear end of the operating rod 12 is activated to compress the clutch shaft 15 and move the clutch 16 to the right.

Therefore, first, the operating plate 33 provided on the clutch shaft 15
The upper stop claws 32, 32 escape from the drop hole 35 of the machine frame 4. Secondly, the rotating gear plate 34 provided on the coaxial shaft 15 meshes with the small-diameter gear portion 22b on the left drive axle 5 to rotate. Thirdly, the clutch claw teeth 17 moved to the right via the collar 37 mesh with the annular teeth 19 of the differential gear type reversing machine casing 18.

With the first operation, the clutch shaft 15 becomes rotatable,
The second operation causes the clutch shaft 15 to rotate. Therefore, even if the pressing force on the bumper 7 disappears, the spring returns to its original position, and the tilted cam 14 is also returned and the clutch shaft 15 is no longer pressed, the clutch shaft 15 remains in the cam of the operating plate 33. Nail 32
Is brought into contact with the inner surface of the left side wall 4a of the machine frame 4 by the action of the spring 16, and is rotated while being moved to the right side to bring the clutch pawl teeth 17 into engagement with the annular teeth 19 of the differential gear type reversing machine casing 18. . Then, the clutch shaft 15 rotates half a turn, and the cam claw 32,
When 32 match, the spring 16 engages and the clutch shaft 15 moves to the left. Therefore, the clutch claw teeth 17 move to the left side by the action of the spring together with the collar 37, and the mesh with the reverse rotation differential gear housing 18 is released. Then, the differential gear type reversing machine casing 18 becomes free again and rotates.

When the rotation of the differential gear type reversing machine casing 18 is stopped by the action of the clutch pawl teeth 17, the left drive axle 5 which is first transmitted by the rotation of the motor rotates forward as it is, and then the axle 5
Is transmitted to the right drive axle 6 via the left pinion 24, the crown gear 25, and the right pinion 26, and is transmitted in the reverse rotation direction to the left drive axle 5. The wheel 27 contacts the engaging tooth 29 with the moderation spring claw 31 and receives a stop resistance, but receives the reverse rotation transmission of the right drive axle 6 and the rotation torque is large, so that the wheel 27 is rotated in the reverse direction. Therefore, the right rear wheel 3b rotates in the opposite direction to the left rear wheel 3a, and the vehicle 38 is turned by the rear wheels 3a and 3b. Then, as described above, the turning operation separates the vehicle 38 from the obstacle, but the turning is continued while the clutch shaft 15 makes a half rotation, and when the vehicle turns a certain angle, it is switched back to forward. The front wheels of the vehicle 38 are caster type to facilitate this turning operation.

Effect Since this invention is as described above, the left and right rear wheels, which are the drive wheels, rotate integrally in forward movement, stably traveling straight, and when hitting an obstacle, the left rear wheel rotates as it is, Since the right rear wheel reverses in the opposite direction, it turns around between the left and right rear wheels, changes the direction of the vehicle with respect to the obstacle, and if there is no obstacle in the new direction, the bumper will return, so go straight again in that direction It is what drives the car.

Therefore, unlike the conventional method in which the rear wheels simply reverse and the caster wheels, which are the front wheels, turn about 30 °, it is possible to make a large 90 ° turn. It is very entertaining because it can be performed speedily and is active.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a plan view of the device of the present invention, FIG. 2 is a side view of the same, and FIG. 3 is a partially cutaway plan view of essential parts. Is a cross-sectional view showing a gear mechanism for reversing one wheel and a moderation rotation mechanism for the reversing wheel, FIG. 5 is a perspective view of an operating plate having a cam pawl provided on a clutch shaft on one side, and FIG. FIG. 7 is a perspective view showing a drop hole engaging with the cam claw, FIG. 7 is a perspective view of a clutch claw tooth, and FIG. 8 is a sectional view taken along line AA in FIG. 1 ... Body plate, 2 ... Front wheel, 3a ... Left rear wheel, 3b ...
Right rear wheel, 4 …… Motor frame, 5 …… Left drive axle, 6 ……
Right drive axle, 7 …… bumper, 14 …… tilting cam, 15 ……
Clutch shaft, 16 …… Spring, 17 …… Clutch claw teeth,
18 ... Differential gear type reversing machine casing, 19 ... Annular teeth, 20 ... Transmission gear, 21 ... Gear, 22 ... Gear, 24 ... Left pinion, 25
...... Crown gear, 26 …… Right pinion, 27 …… Wheel, 28…
… Rubber tire, 29 …… Engagement teeth, 30 …… Transmission cylinder, 31 …… Moderation spring claw, 32 …… Cam claw, 33 …… Operating plate, 34 …… Rotating gear plate, 35 …… Sink hole, 36 …… Bearing guide, 37 ……
Color, 38 ... vehicle.

Claims (1)

[Scope of utility model registration request] 1. An obstacle detecting operation force conversion such as a bumper urged so as to project in the traveling direction, move in the opposite direction when a collision occurs, and become an operation force when the vehicle collides, and return to the original position when separated from an obstacle. A mechanism, a caster-type front wheel arranged on the front side in the traveling direction of the vehicle, and left and right rear wheels as driving wheels arranged on opposite opposite rear sides are provided, and the left and right rear wheels are divided at the center. The left drive axle and the right drive axle are attached to the outer ends of the left drive axle and the left drive axle, respectively, while the gears on the shaft are meshed with the transmission gear of the motor to rotate, and the left pinion attached to the inner end of the left drive axle is It is installed in a differential gear type reversing machine housing that is supported on one side as the same shaft core, a right pinion is also attached to the inner end of the right drive axle, and internal bearings are mounted in the differential gear type reversing machine housing, and both left and right pinions Rotatably supported in the differential gear type reversing machine housing When the differential gear type reversing machine casing is locked and stopped, the right drive axle is provided so that it can rotate in the reverse direction, and the right drive axle receiving portion of the differential gear type reversing machine casing is installed. It is extended outwards, rotatably supported by the machine frame, and its outer end is meshed with the inner end of a transmission cylinder having a moderation spring claw on the outer end, and integrated with the differential gear type reversing machine casing. Rotating and rotating in opposite directions, the tip of the moderation spring claw is pressed against the inner diameter engaging tooth of the wheel to which the outer end of the right drive axle is fixed, to obtain a proper resistance. , The right rear wheel is rotatably provided, and the clutch shaft that operates by receiving the operation force of the obstacle detection operation force conversion mechanism is
While being urged by the spring toward the operating force side, the operating plate with the cam claw whose tip is in the return direction is supported, and when it coincides with the corresponding drop hole on the side wall of the machine frame,
When the stop claw is fitted to hold the clutch shaft in a fixed position and the clutch shaft is moved by the operation force of the bumper, the stop claw escapes from the drop hole and becomes free, and is provided on the shaft. The gear engages with the transmission gear and rotates, and the stop claw slides against the inner surface of the side wall of the machine frame by the action of a spring, and moves with the operating force even when the operating force of the bumper etc. is lost until it is inserted into the drop hole again. When the engagement position is moved by the operating force of the bumper, the clutch gear teeth are supported on the shaft so as not to rotate, and the differential gear type reversing machine casing is provided. It is provided so as to mesh with the annular tooth formed on the outer periphery of the wheel and stop it.At this time, the drive axle causes the wheel to rotate in the reverse direction opposite to the left drive axle by causing the moderation spring claw to stop to slide. Driving direction centered between the two rear wheels Automatic traveling converter of the running toy toy automobile or the like, characterized in that the pivot transformation.