JPH0661297U - Traveling toys - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a traveling toy that allows the user to disengage the wheeled state by himself. [Structure] The left and right drive shafts, each of which is provided with a drive wheel and is connected to each side gear of the differential gear, are capable of seesaw operation in the vertical direction with respect to the main body of the traveling toy, and are connected to the ring gear of the differential gear. The differential gear and the drive gear are arranged so that the ring gear is always meshed with a drive gear that applies rotational power, and a shaft is arranged near the left and right drive shafts. The left and right drive shafts are provided with an emergency gear train for selectively forcibly rotating one of the left and right drive shafts during a seesaw operation.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a traveling toy in which left and right drive wheels are driven via a differential gear.

[0002]

[Prior art]

 In a running toy, if the left and right drive wheels are rotated at the same number of revolutions, there will be no problem when traveling straight ahead, but if you approach a curve, there will be a difference in the course on the left and right circumferences, so the inner drive wheels will slip. The way it bends becomes unnatural. Therefore, in order to automatically increase the rotation speed of the outer drive wheels by the amount of resistance of the inner drive wheels generated by the curve so that the curve can be smoothly turned, a differential gear similar to that in an actual car is used. Incorporated running toys have been devised.

[0003]

[Problems to be solved by the device]

 However, when the differential gear was incorporated into an automobile toy, the following new problems arose.

[0004] For example, in an actual automobile, the risk of derailing or the like is extremely small, but since the toy body of the automobile is small, there is a risk of derailing even if there is a slight undulation difference. In this case, in an automobile toy incorporating a differential gear, the rotational speed of the drive wheel on the side where road surface resistance does not act (drive wheel on the derailing side) increases, and the rotational speed of the drive wheel on the ground side becomes zero. Therefore, there is a problem that it is impossible to get out of the derailed state by itself. As a result, every time the player derails, the player has to run to the running toy body to get the running toy body out of the derailed state. It was not convenient to run the toy body.

The present invention has been made in view of the above problems, and an object thereof is to provide a traveling toy that can be released from a derailed state by itself.

[0006]

[Means for Solving the Problems]

 The present invention relates to a traveling toy in which the left and right drive wheels provided on the traveling toy body are driven through differential gears, and the drive wheels are attached to each of them and the left and right drive shafts connected to the side gears of the differential gear are A seesaw operation is possible in the vertical direction with respect to the traveling toy main body, and the differential gear and the drive gear are arranged so that the ring gear always meshes with the drive gear that applies rotational power to the ring gear of the differential gear. And a shaft is arranged near the left and right drive shafts, and one of the left and right drive shafts is selectively formed between this shaft and the left and right drive shafts during seesaw operation. An emergency gear train for forced rotation is provided.

[0007]

[Action]

 According to the above means, since the differential gear is provided, both driving wheels rotate together when going straight, and when turning, the driving force of the outer driving wheel automatically increases by the resistance of the inner driving wheel, which makes it smooth. You can turn a curve. In addition, when one drive wheel is not grounded due to wheel removal, the emergency gear train operates, one of the drive shafts is forced to rotate, and the drive wheel attached to the drive shaft rotates. Meanwhile, the other drive wheel also rotates via the differential gear. As a result, it is possible to surely get out of the wheel removal state.

[0008]

【Example】

 Hereinafter, a traveling toy according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows an appearance of a traveling toy according to the present invention. Reference numeral 1 indicates the whole of the traveling toy. The traveling toy 1 has the appearance of a controller 2 for transmitting a control signal and a dump truck, and is controlled by a control signal from the controller 2. It has a traveling toy main body (hereinafter referred to as a dump truck) 3 having a built-in receiver 19 (see FIG. 8). Then, in this traveling toy 1, when the traveling button 5 is pressed after turning on the switch SW of the dump truck 3, the dump truck 3 goes straight. In this case, when the lever 6 is tilted to the front side, the dump truck 3 moves forward, and when the lever 6 is tilted to the rear side, the dump truck 3 moves backward. Moreover, when the handle 7 is turned to the left or right during the traveling, the dump truck 3 turns to the left or right accordingly. If the steering wheel 7 is turned without pressing the travel button 5, the front wheels 4 and 4 are cut in that direction. When the lever 8 on the roof 3a of the dump truck 3 is operated, the loading platform 9 is automatically lifted.

Next, details of the traveling toy 1 will be described.

First, the circuit of the controller 2 will be described with reference to FIG. 2. The controller 2 includes an integrated circuit IC1 as a control circuit for controlling forward movement, backward movement, left turn and right turn of the dump truck 3, and an integrated circuit. It is composed of a transmission circuit TX1 for transmitting the control signal output from the IC1.

A steering wheel switch S7 is connected to the input terminals 3 and 5 of the IC 1, and the steering wheel switch S7 is turned to the steering wheel 7 so that the front wheels 4 and 4 of the dump truck 3 are turned to the left or the right. When operated by, an earth signal is input to the input terminal 3 or 5, the ground side of the battery BAT1 is grounded, and the controller 2 starts operating. A switch S6 for forward / backward switching is connected to the input terminals 11 and 10. When the switch S6 is switched to the forward or backward side by the lever 6, a ground signal is input to the input terminal 11 or 10. . Further, the travel button 5 is connected between the negative side of the battery BAT1 and the ground, and when the travel button 5 is pressed, the negative side of the battery BAT1 is grounded and the controller starts operating. That is, the controller 2 operates only when the handlebar switch 7 or the travel button 5 is operated, and at that time, the integrated circuit IC1 outputs the pulse corresponding to the signal input to the input terminals 3, 5, 10, 11. The control signal is output from the "OUT" terminal to the transmission circuit TX1. This pulse control signal is composed of a start bit signal and a control bit signal. Specifically, it is composed of a start bit signal composed of a high-level signal of a predetermined time length (for example, 3 mSec) (hereinafter referred to as “H” signal) and an “H” signal having the same time length. The interval time with the control bit signal is set to a length corresponding to the control item such as forward movement.

The transmission circuit TX1 is composed of a crystal oscillation circuit including a transistor Q1 and a crystal X1, a modulation circuit including a transistor Q2, and a BPF (bandpass filter) including capacitors C1 to C3 and coils L1 and L2. There is. Of these, the crystal oscillator circuit oscillates a carrier of 27 MHz, and its output signal is always input to the base of the transistor Q2. Further, the modulation circuit is configured such that the transistor Q2 is turned on by a pulse signal input from the terminal "OUT" of the integrated circuit IC1 to the base of the transistor Q2. That is, the transistor Q2 outputs the carrier wave output from the crystal oscillating circuit to the BPF only when the pulse signal is "H". Then, the carrier wave is transmitted from the antenna ANT1 to the receiver 19 through the BPF.

Next, the circuit of the receiver 19 will be described. The receiver 19 is composed of a receiving circuit RX1 including a transistor Q11 and the like, and a motor control circuit CONT1 including an integrated circuit IC11 and transistors Q12 to Q22 and the like. Has been done. When the switch SW is turned on, the receiver 19 lights up the LED to indicate that the receiver 19 is in the use mode, and the receiver circuit RX1 and the motor control circuit CONT1 are supplied with power to start the operation. .

The reception circuit RX1 demodulates the transmission wave input from the antenna ANT11 into a pulse signal by a super-regeneration reception circuit including a transistor Q11, capacitors C11 to C16 and coils L11 and L12, and a resistor R11 and a capacitor. It is output to the input terminal 2 of the integrated circuit IC11 of the motor control circuit CONT1 via C17.

The integrated circuit IC11, after amplifying and shaping the input pulse signal, separates it into a start bit signal and a control bit signal, and based on the time interval between these two separated signals, a built-in pulse controller circuit. And the decoder circuit decodes the pulse signal. The integrated circuit IC11 is a built-in output controller circuit that outputs a predetermined control signal based on the decoded signal. Specifically, from the terminal "FORWARD" when moving forward, from the terminal "BACKWARD" when moving backward, from the terminal "LEFT" when turning left, and from the terminal "RIGHT" when turning right. Outputs a low-level signal (hereinafter, referred to as ““ L ”signal”). These "L" signals are output only while the controller 2 is pressing the corresponding switch.

In this case, when the “L” signal is output from the terminal “FORWARD”, the transistors Q19 to Q21 are turned on to drive the motor M1 in the forward direction, and the terminals “BA CKWARD” to “L”. When the signal is output, the transistors Q17, Q18 and Q22 are turned on to drive the motor M1 in reverse.

On the other hand, when the “L” signal is output from the terminal “LEFT”, the transistors Q14 and Q15 are turned on, the motor M2 is driven in the forward direction, and the “L” signal is output from the terminal “RIGHT”. When output, the transistors Q13 and Q16 are turned on to drive the motor M2 in reverse.

Next, the dump truck 3 will be described. In the dump truck 3, as shown in FIG. 4, the rear wheels 10, 10 are drive wheels, and the rear wheels 10, 10 are drive shafts. It is attached to 11, 11. The two drive shafts 11, 11 and thus the rear wheels 10, 10 are connected by a differential gear 12 provided therebetween. As shown in FIG. 5, the differential gear 12 includes a ring gear 14 which constitutes an input gear, side gears 13 and 13 which constitute sun gears connected to the respective drive shafts 11 and 11, and side gears 13 and 13 thereof. The planetary pinions 15 and 15 mesh with each other. In this differential gear 12, when the ring gear 14 rotates when traveling straight (forward or backward), the planet pinions 15 and 15 revolve around the side gears 13 and 13 without rotating. As a result, the drive shafts 11, 11 rotate at a constant speed. On the other hand, in the case of a curve, a larger road surface resistance acts on the inner rear wheel 10 than on the outer drive wheel 11, so that the planet pinions 15, 15 revolve around the side gears 13, 13 while revolving around each side gear 13, 13. Shafts 11 and 11 rotate at different speeds. Specifically, the rotation speed of the inner drive shaft 11 is lower than that during straight travel, and the rotation speed of the outer drive shaft 11 is greater than that during straight travel. As a result, the dump truck 3 can smoothly travel on a curve.

The differential gear 12 is housed in a gear box 16. Further, the drive shafts 11 and 11 are configured to be able to perform a seesaw operation up and down with respect to the dump truck 3 about shafts 16a and 16a provided on the front and rear surfaces of the gear box 16 as a center. The fulcrum of the seesaw operation in this case, that is, the shafts 16a, 16a are the center positions of the dump truck 3 in the width direction. An opening 17a for exposing a part of the ring gear 14 is formed in the lid 17 placed on the gear box 16.

Next, the drive mechanism for driving the differential gear 12 will be described. The rotational power of the motor M1 is transmitted to the shaft 21 through the gears 20a, 20b, 20c, 20d. The shaft 21 is rotatably supported in the axial direction, and the shaft 21 is provided with gears 20e and 20f in addition to the gear 20d. The shaft 22 arranged in parallel with the shaft 21 is provided with a gear 20g that can mesh with the gear 20a and a gear 20h that can mesh with the gear 20f. The gears 20g and 20h are integrally configured so that the gear 20a and the gear 20g are meshed with each other and the gear 20f and the gear 20h are meshed with each other. Then, the rotational power transmitted to the shaft 21 is transmitted to the drive gear 20i attached to the shaft 22 via one of the paths of the gear 20e, the gear 20g or the gears 20f, 20h, and further from the drive gear 20i. It is transmitted to the ring gear 14 of the differential gear 12. Here, the drive gear 20i is attached to the shaft 22 so as to be able to rotate, and is pressed against the gear 20g through the surface clutch 24 by the action of the spring 23. By this pressing, the drive gear 20i can rotate integrally with the gears 20g and 20h. Is being done. It should be noted that the surface clutch 24 between the gears 20g and 20g is of a type in which the concavities and convexities on the opposing surfaces are fitted together, and it always functions to transmit the rotational power of the gears 20g and 20h to the drive gear 20i side. For example, when an excessive load is applied to the rear wheels 10, 10, it works to release the engagement between the gears 20g, 20h and the gear 20i.

Further, emergency gear trains 30, 30 are provided on the drive shafts 11, 11 and the shaft 22, respectively. The gear trains 30 and 30 are composed of gears 30a and 30a attached to both ends of the shaft 22, and gears 30b and 30b attached to both ends of the differential gear 12 of the drive shaft 11, respectively. As shown in FIG. 6, in the gear trains 30, 30, the gears 30a, 30a and the gears 30b, 30b are not in mesh with each other when traveling on a level ground, and one side is disengaged to drive the drive shaft 11 , 11 is engaged in the seesaw operation, the gear 30b on the upper side meshes with the gear 30a. Since the gear 30a is fixed to the shaft 22 and is rotated by the rotational power of the gears 20g and 20h, the differential gear 12 has two inputs, one from the drive gear 20i and one from the gear 30a. Become. In this case, the input from the gear 30a is set to be lower than the rotation speed of the drive shaft 11 when the drive shaft 11 travels straight. In this embodiment, the ring gear 14 is swelled so that the drive gear 20i and the ring gear 14 maintain the meshed state even when the drive shafts 11 and 11 perform the seesaw operation.

Next, the transmission mechanism incorporated in the drive mechanism will be described. The transmission mechanism includes gears 20e and 20f attached to the shaft 21 and shafts 20g and 20h attached to the shaft 22. The slide switch 40 moves the shaft 21 in the axial direction so that the gear 20e and the gear 20g are meshed with each other and the gear 20f and the gear 20h are meshed with each other. That is, the left and right movements of the slide switch 40 cause the lever 41 to swing about the shaft 42, and further the lever 44 to swing about the shaft 42 through the torsion coil spring 43, which is attached to the tip of the lever 44. By moving the gear 20d held by the fork 44a to the left or right, the gear 20a and the gear 20g are meshed with each other and the gear 20f and the gear 20h are meshed with each other. Here, an elastic claw 40a is formed on the upper portion of the slide switch 40, and the elastic claw 40a fits into the recess (not shown) of the dump truck 3 at each of the meshing positions and can hold each meshing position. It has become. The levers 41 and 44 are engaged by hooking the ends of the torsion coil spring 43 wound around the shaft 42 to the ends of the rising portions 41a and 44b of the levers 41 and 44, respectively. The main switch SW 2 of the dump truck 3 is turned on and off by the operation of the slide switch 40. That is, the lever 41 is provided with the pressing protrusion 41b, and the pressing switch 41b turns on and off the main switch SW2 attached on the mechanism box 45.

Next, the steering mechanism for the front wheels 4, 4 will be described.

As shown in FIG. 8, the rotational power of the motor M2 is transmitted to the link 51 through the gears 50a, 50b, 50c, 50d, 50e, 50f, 50g and 50h, and the link 51 rotates four nodes. The front wheels 4 and 4 are steered by transmitting power to the chain 52. Here, the motor M2 and the gears 50a, 50b, 50c, 50d, 50e, 50f, 50g, 50h are housed in the mechanism box 55. Further, a surface clutch 53 is interposed between the gear 50f and the gear 50g. That is, the gear 50g is attached to the shaft 54 so as to be able to idle, and is pressed against the gear 50f via the surface clutch 53 by the action of the spring 56. The gears 50f and 50g can be integrally rotated by this pressing. In this case, the surface clutch 53 is of a type in which the concavities and convexities on the opposing surface are fitted together, and normally serves to transmit the rotational power of the gear 50 f to the gear 50 g side, and, for example, an excessive load is applied to the front wheels 4 and 4. When the action is performed, the gear 50f and the gear 50g are disengaged from each other. The driving link 57 that constitutes the four-bar rotary chain 52 has a long hole 57a formed at the center thereof and extending in the longitudinal direction of the dump track 3. The pin 51a of the link 51 is fitted into the long hole 57a. Further, holes 57b, 57b are formed at both ends, and pins 58a, 58a of shaft members 58, 58 for supporting the front wheels 4, 4 are fitted in the holes 57b, 57b (see FIG. 9). ). With the above configuration, the front wheels 4 and 4 are steered by the forward and reverse rotations of the motor M 2.

Note that, in FIGS. 3, 8 and 10, reference numeral S10 (see FIG. 10) is a steering center switch for causing the dump truck 3 to travel straight, and when the front wheels 4, 4 are turned to the left and right. The contact d of the switch S10 is configured to be connected to the fixed side contact a or c by a movable contact piece e that is integrally rotated with the gear 50h. A steering center set circuit is constituted by the steering center switch S10 and the transistor Q12 shown in FIG. This steering center set circuit allows the front wheels 4 and 4 to turn left or right when the steering wheel 7 is returned after the left or right turn control is performed on the controller 2 side or immediately after the switch SW of the receiver 19 is turned on. It is a circuit that sets the direction of the front wheels 4 and 4 to the straight traveling state when it is in the turn state. Specifically, this circuit allows the base current of the transistor Q13 or Q14 to flow through the diode D2 and the resistor R12 when the contact d of the switch S10 is connected to the contact a or c, and When Q14 is turned on and contact d is not connected to contacts a and b (that is, contact d and contact b are connected in FIG. 3, movable contact piece in FIG. 10). The motor M2 is normally rotated until either one of the two ends of e (indicated by a circle) is located in the gap b between the contacts a and c), that is, the front wheels 4 and 4 of the dump truck 3 are in the straight traveling state. Or drive in reverse. When the front wheels 4, 4 are in a straight traveling state, or when the “L” signal is output from the terminals “LEFT” or “RIGHT” of the accumulation circuit 11, the base currents of the transistors Q13 and Q14 are Since there is no flow, the motor M2 stops.

According to the traveling toy 1 of the embodiment configured as described above, the following effects can be obtained.

According to the embodiment, since the differential gear 12 is provided, the rear wheels 10 and 10 rotate together when moving forward or backward, and only the resistance of the inner drive wheel when turning. The driving force of the outer drive wheels is automatically increased to smoothly turn the curve. Further, in a state where wheel removal occurs and one drive wheel is not grounded, one of the drive shafts 11, 11 is forcibly rotated by the emergency gear train 30 and is attached to the drive shaft. The drive wheels 11 that are rotating rotate. On the other hand, the other drive wheel 11 also rotates via the differential gear 12. As a result, the derailed state can be reliably removed.

Although the embodiment made by the present inventor has been described above, the present invention is not limited to this embodiment, and it goes without saying that various modifications can be made without departing from the scope of the invention. .

For example, in the above-described embodiment, the emergency gear trains 30 and 30 are provided between the shaft 22 to which the drive gear 20i is attached and the drive shafts 11 and 11, but the drive shafts 11 and 11 and the drive gears 11 and 11 are provided. The emergency gear trains 30, 30 may be provided between the shaft 20i and another shaft.

Further, in the above-mentioned embodiment, the case where the present invention is applied to the remote-controlled automobile toy is explained, but the present invention can be applied to all remote-controlled or self-propelled figure toys.

[0032]

[Effect of device]

 As described above, according to the present invention, in the traveling toy in which the left and right driving wheels provided in the traveling toy main body are driven through the differential gear, the driving wheels are attached to each of them and are connected to the side gears of the differential gear. The left and right drive shafts are vertically movable with respect to the traveling toy main body, and the ring gear is always meshed with the drive gear that applies rotational power to the ring gear of the differential gear. Is provided with the differential gear and the drive gear, and a shaft is provided near the left and right drive shafts. Further, this shaft and the left and right drive shafts are driven by the left and right drive shafts during a seesaw operation. Since an emergency gear train that selectively rotates one of the shafts selectively is provided, it is possible to remove the wheel-removed state by itself.

[Brief description of drawings]

FIG. 1 is a perspective view of the appearance of a traveling toy according to an embodiment.

FIG. 2 is a circuit diagram of a controller of the traveling toy according to the embodiment.

FIG. 3 is a circuit diagram of a receiver of the traveling toy according to the embodiment.

FIG. 4 is an exploded perspective view of a rear wheel drive mechanism of the traveling toy according to the embodiment.

FIG. 5 is a vertical cross-sectional view of the differential gear of the traveling toy of the embodiment.

FIG. 6 is a diagram showing a meshing state of gears of a rear wheel drive mechanism of the traveling toy according to the embodiment.

FIG. 7 is a diagram showing a transmission mechanism of the traveling toy of the embodiment.

FIG. 8 is an exploded perspective view of a front wheel steering mechanism of the traveling toy of the embodiment.

FIG. 9 is a plan view around a front wheel of the traveling toy of the embodiment.

FIG. 10 is a plan view of a steering center switch of the traveling toy of the embodiment.

[Explanation of symbols]

 1 Running Toy 3 Dump Truck (Running Toy Main Body) 10,10 Rear Wheel (Drive Wheel) 11,11 Drive Shaft 12 Differential Gear 13,13 Side Gear 14 Ring Gear 20i Drive Gear 22 Shaft 30 Emergency Gear Train

Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI Technical display area A63H 30/04 A 9012-2C

Claims (1)

[Scope of utility model registration request] 1. In a traveling toy in which left and right drive wheels provided in a main body of the traveling toy are driven through differential gears, the left and right drive shafts are respectively provided with drive wheels and are connected to respective side gears of the differential gear. The differential gear and the drive are configured to be capable of seesaw operation in the vertical direction with respect to the traveling toy main body, and to be constantly meshed with a drive gear that applies rotational power to the ring gear of the differential gear. A gear is provided, a shaft is provided near the left and right drive shafts, and one of the left and right drive shafts is selectively provided between this shaft and the left and right drive shafts during seesaw operation. A traveling toy characterized by being provided with an emergency gear train for forced rotation.