JP3704403B2 - Radio-controlled car toy with jump mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automobile toy having a new traveling form, and more particularly to a radio controlled automobile toy provided with a jump mechanism having a function of jumping over a relatively large obstacle located in the front.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, various radio-controlled car toys have been proposed that include a mechanism that travels by deforming or displacing the vehicle body in order to overcome a relatively large obstacle or the like in front of the toy. .
[0003]
The applicant firstly configured the front wheel side vehicle body part and the rear wheel side vehicle body part to be bent so that the front wheel and the rear wheel face each other and approach each other. Drive control is performed using two drive motors, enabling rapid right or left turn steering operation. This can be applied to relatively large obstacles due to changes in vehicle body bending during off-road driving. A traveling toy that can be smoothly advanced by avoiding obstacles by overriding or getting over, or by sudden turning of the vehicle body has been developed, and a patent application has been filed (Japanese Patent Laid-Open No. 7-313738).
[0004]
That is, the traveling toy according to this patent application divides the chassis and the vehicle body into a front wheel side and a rear wheel side, and these divided chassis and vehicle body are joined so that they can be bent in the vertical direction. And the right front wheel and the rear wheel are respectively coupled by a predetermined transmission mechanism, a pair of drive motors are provided, and these drive motors are coupled to the left and right transmission mechanisms, and the pair of drive motors are energized simultaneously. The left front wheel and the rear wheel and the right front wheel and the rear wheel are each provided with control means capable of reversibly rotating in the same direction or in opposite directions.
[0005]
However, this type of traveling toy is bent at the joint between the vehicle body and the chassis, and the front end of the vehicle body or chassis is tilted downward or returned to the horizontal, so that the projecting toy is appropriately provided at the front end of the chassis. Since it is possible to eliminate obstacles, carry and move the vehicle, its traveling form is extremely interesting.
[0006]
However, since this type of traveling toy has a weak function of overcoming obstacles and the like, it has been difficult to easily and quickly get over relatively large obstacles.
[0007]
From this point of view, as a result of further studies, the present applicant has provided a jump arm in which a plurality of foldable arms are radially arranged at the bottom of the vehicle body so as to be able to turn, and this jump arm can be provided as desired. Developed and applied for a patent for a radio-controlled car toy that is configured to perform so-called jumping movements of the vehicle body, in which each arm swings while extending to move and the vehicle body moves up from the ground surface. (Japanese Patent Application No. 7-229749).
[0008]
[Problems to be solved by the invention]
However, the jumping mechanism of the radio-controlled car toy according to the patent application is provided with an opening extending in the longitudinal direction in the chassis of the car toy, and is pivotally supported on the chassis via a shaft and swivels through the opening. An operating jump arm is provided, and driving means mechanically connected to the jump arm via connecting means is provided in the chassis.
[0009]
However, according to the previously proposed jump mechanism of the radio-controlled car toy, in order for the jump arm to perform a jump operation, the jump arm includes a main arm part and an auxiliary arm part, and the main arm part can be bent with respect to each other. The auxiliary arm portion is composed of a first member and a second member which are joined together, and the auxiliary arm portion is composed of a third member for bending the second member and an eccentric rotating disk for operating the third member, and has a complicated structure. are doing.
[0010]
The jump mechanism configured as described above rotates the eccentric rotating disk to move the first member and the second member of the main arm portion to the bottom side of the chassis (by the action of the third member of the auxiliary arm portion). The vehicle body can be lifted from the ground contact surface by turning it while extending linearly on the ground side). For this reason, it is necessary to install the jump mechanism at the center of the vehicle body because of the balance.
[0011]
Accordingly, when the vehicle jumps by the jump mechanism, the jump arm extends with respect to the ground plane. For example, when jumping over a relatively large obstacle, the jump arm is obstructed and smooth. There are difficulties such as hindering jump movement.
[0012]
For this reason, for example, there is no problem if the jump arm is instantaneously bent at the same time as the required shampooing operation. However, in this case, the structure of the jump mechanism becomes more complicated, failure is likely to occur, and the manufacturing cost increases. There are difficulties such as.
[0013]
Therefore, an object of the present invention is to perform an extremely smooth vehicle body jumping operation with a relatively simple configuration without causing the jumping mechanism to become an obstacle even when a relatively large obstacle is present during an operation of shifting from running to jumping. It is to provide a radio-controlled car toy with a jump mechanism that can be achieved.
[0014]
[Means for Solving the Problems]
In order to achieve the above object, a radio-controlled car toy provided with a jump mechanism according to the present invention is a radio-controlled car toy comprising a front wheel provided with a steering mechanism and a rear wheel provided with a travel drive mechanism.
A support shaft is provided behind the rear wheel in parallel with the axle of the rear wheel, and one end of each jump arm is pivotally attached to the support shaft so as to correspond to the left and right rear wheels. Extending the other end of the front to the front of the rear wheel,
The other end side of the jump arm is always attached so as to maintain an upward return elasticity, and a rotating cam is disposed in contact with the jump arm so that the other end side of the jump arm is resistant to the return elasticity. The cam rotation driving mechanism for driving the rotating cam is further provided, and the cam rotation driving mechanism is operated during the forward traveling drive of the radio-controlled car toy. The present invention is characterized in that the vehicle body jumps according to the displacement of the jump arm.
[0015]
In this case, the jump arm, which is pivotally attached to the support shaft at one end, is coupled to a part of the vehicle body via a tension coil spring at the one end, and the other end of the jump arm is pulled by the coil spring. It can be configured to always pull upwards by elasticity.
[0016]
Further, the jump arm, which is pivotally attached to the support shaft at one end portion, forms a cam abutting portion on the one end side, and a pawl portion provided on the rotating cam is brought into contact with the cam abutting portion, thereby the jump arm. The arm can be configured to be pivotally displaced by a predetermined angle.
[0017]
Furthermore, it is preferable that the jump arm pivotally attached to the support shaft at one end portion is provided with a roller at the other end portion for smoothly abutting the grounding surface during the jump operation.
[0018]
According to the radio-controlled car toy equipped with the jump mechanism according to the present invention, the jump arm having one end pivotally attached thereto is attached so that the other end always keeps the return elasticity upward. A rotary cam is placed in contact with the arm, the jump arm is gradually rotated to a predetermined angle within a predetermined rotation angle range of the rotary cam, and then automatically returned to the original state by a return elasticity. Even if there is a relatively large obstacle, the jump arm does not get in the way, and a smooth jump operation of the vehicle body can be achieved.
[0019]
【Example】
Next, an embodiment of a radio controlled car toy equipped with a jump mechanism according to the present invention will be described in detail with reference to the accompanying drawings.
[0020]
1 and 2 show an embodiment of a radio-controlled car toy equipped with a jump mechanism according to the present invention. FIG. 1 is a schematic plan view showing a configuration of a main part of a chassis of the radio-controlled car toy. FIG. 2 is a schematic side view showing the main configuration of the jump mechanism.
[0021]
In FIG. 1, reference numeral 10 indicates a chassis. Front wheels 12 and 12 are provided on the front side of the chassis 10, and rear wheels 14 and 14 are provided on the rear side of the chassis 10.
The front wheels 12 and 12 are coupled to a steering control drive motor 18 via steering rods 16 and 16, respectively, and are configured to be capable of steering the front wheels 12 and 12 so that the chassis 10 can turn left and right. . Further, the rear wheels 14 and 14 are configured to perform a traveling control in which a traveling control drive motor 22 is coupled to the common drive shaft 20 to move the chassis 10 forward or backward.
[0022]
However, in the radio-controlled car toy of the present embodiment, as shown in FIGS. 1 and 2, the support shaft is parallel to the drive shaft 20 with respect to the chassis 10 portion behind the drive shaft 20 of the rear wheels 14, 14. 24, the jump arms 26 and 26 are pivotally attached to both ends of the support shaft 24 so as to be close to both sides of the chassis 10 and to extend forward of the chassis 10, respectively. Become. The pair of jump arms 26 and 26 are coupled to each other by a connecting rod 27 on the free end side.
[0023]
The jump arms 26 and 26 are elastically supported on both side portions of the chassis 10 through tension coil springs 28 and 28, respectively, at a part of the support side of the support shaft 24, and the jump arms 26 and 26. The rollers 30 and 30 are attached to the free ends of the two to facilitate the running on the ground contact surface E.
[0024]
Further, rotational cams 32 and 32 are respectively arranged to face a part of the jumping arms 26 and 26 on the axis attachment side, and the rotational cams 32 and 32 are parallel to the support shaft 24 of the jump arms 26 and 26. It is attached to an operation shaft 34 inserted and arranged in the chassis 10. Therefore, by operating the rotary cams 32 and 32 once, the jump arms 26 and 26 are forcibly pushed down downward on the free end side against the elasticity of the tension coil springs 28 and 28. Thus, the chassis 10 is displaced so as to be gradually lifted upward.
[0025]
For this reason, in the present embodiment, each of the rotating cams 32 is provided with a claw portion 32a, and the claw portion 32a is configured to abut on a cam abutting portion 26a formed on a part of the jump arm 26 ( (See FIG. 2). With this configuration, when the rotary cam 32 is rotated in a predetermined direction indicated by an arrow, the jump arm 26 is forced to be pushed downward downward gradually as described above. The chassis 10 can be displaced so as to gradually lift upward.
[0026]
Therefore, a jump operation drive motor 38 is coupled to the operation shaft 34 via a gear mechanism 36 as operation means for the rotary cams 32 and 32. However, the gear mechanism 36 includes a first gear 39, a second gear 40, a third gear 41, and a fourth gear 42. The first gear 39 is connected to a pinion 38a coupled to the output shaft of the drive motor 38. The second gear 40 meshes with the pinion portion 39a of the first gear 39 while meshing. Next, the third gear 41 is engaged with the pinion portion 40a of the second gear 40, and the fourth gear 42 that is coaxially coupled to the operation shaft 34 is engaged with the pinion portion 41a of the third gear 41, so that the rotation is performed. The cams 32 and 32 are configured to rotate (see FIGS. 1 and 2).
[0027]
A limit switch 44 for detecting one rotation operation of the rotating cam 32 is provided in a part of the chassis 10 so as to correspond to one of the rotating cams 32 and 32. In accordance with the detection operation of the limit switch 44, the jump operation drive motor 38 that operates the gear mechanism 36 is stopped, and the rotation operation of the rotary cam 32 is stopped, whereby the jump arms 26, 26 are stopped. The jump operation can be appropriately performed once every time.
[0028]
Further, as shown in FIG. 2, the jump mechanism having the above-described configuration is properly housed in the body B of the radio-controlled car toy attached to the chassis 10 (FIG. 1), including other drive control mechanisms. The arrangement is as follows.
[0029]
Next, a description will be given of a control means for performing a maneuvering operation of the radio controlled car toy provided with the jump mechanism having the above-described configuration.
[0030]
FIG. 5 and FIG. 6 are a schematic diagram of a drive control circuit and a schematic diagram of a control circuit of a radio transmitter mounted on the radio-controlled car toy having the above-described configuration. That is, in FIG. 6, the control circuit of the wireless transmitter includes a power source battery 50 and a signal including operation switches 52, 54, and 56 that respectively command running control, steering control, and jump operation of the radio-controlled car toy. The generator 58, the high-frequency oscillator 60, and a transmitting antenna 62 are included. The travel control operation switch 52 controls switching between forward and reverse driving of the car toy, and the steering control operation switch 54 controls switching between turning right and left of the car toy. Is set to perform one jump operation of the car toy.
[0031]
In FIG. 5, the drive control circuit mounted on the radio-controlled car toy includes a power supply battery 64, a receiving antenna 66, a receiver 68, a signal processing circuit 70, and a jump operation drive motor control circuit 72. The driving control drive motor 22 and the steering control drive motor 18 are controlled by the signal processing circuit 70, respectively, and the jump operation drive motor 38 is controlled via the jump operation drive motor control circuit 72. It is configured. The jump operation drive motor control circuit 72 is connected to a limit switch 44 that detects one rotation operation of the rotary cam 32, and is set so that the jump operation drive motor 38 operates one rotation.
[0032]
Accordingly, a description will be given of the maneuvering operation and the operation of the radio controlled car toy provided with the jump mechanism according to the above embodiment when the control means described above is used.
[0033]
First, by operating the travel control operation switch 52 and the steering control operation switch 54 of the wireless transmitter shown in FIG. 6, it is possible to achieve the same travel control and steering control as those of a normal radio-controlled car toy.
[0034]
Therefore, in order to perform a jump operation of the radio-controlled car toy, when the travel and steering control is set to the forward and straight control state and the jump operation switch 56 is operated, the jump operation drive motor 38 is rotated and the gear mechanism 36 is driven. The rotary cam 32 rotates through the jump arm 26, and the jump arm 26 performs a predetermined turning operation.
[0035]
That is, as shown in FIG. 3A, the jump arm 26 can contact the ground contact surface E and gradually move the vehicle body B on the front wheel 12 side upward. However, in this case, since the inertial force of the forward traveling is working in the vehicle body B, when the turning motion of the jump arm 26 proceeds, as shown in FIG. 3B, a roller provided at the tip of the jump arm 26 With the vehicle 30 in a grounded state, the entire vehicle body B floats up from the grounding surface E, and a required jump operation posture is obtained.
[0036]
Next, when the jump arm 26 reaches the maximum displacement degree, as shown in FIG. 4A, the cam coupling with the rotary cam 32 is released, and the jump arm 26 is returned to the original state by the action of the tension coil spring 28. Return. As a result, the vehicle body B can achieve a smooth jump operation (see FIG. 4B).
[0037]
Therefore, the radio-controlled car toy that performs such a jumping operation is performed by performing the above-described control operation when the obstacle 80 exists in the forward direction of the vehicle body B as shown in FIG. The obstacle 80 can be jumped by performing a jump operation like a locus indicated by a chain line.
[0038]
The jump operation of such a radio-controlled car toy jumps the vehicle body B to a higher distance further by appropriately setting the rotation speed of the traveling control drive motor 22 together with the rotation speed of the jump operation drive motor 38. It can be operated.
[0039]
The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the spirit of the present invention.
[0040]
【The invention's effect】
As is clear from the above-described embodiments, according to the radio-controlled car toy provided with the jump mechanism according to the present invention, the radio-controlled car toy provided with the front wheel provided with the steering mechanism and the rear wheel provided with the travel drive mechanism. In this case, a support shaft is provided behind the rear wheel in parallel with the axle of the rear wheel, and one end of each jump arm is pivotally attached to the support shaft in correspondence with the pair of left and right rear wheels. Extend the other end of the jump arm so that it points toward the front of the rear wheel, and attach the other end of the jump arm so that it always keeps its return elasticity upward. Arranged so that the other end side of the jump arm is pushed down and displaced against the return elasticity, and further provided with a cam rotation drive mechanism for driving the rotary cam, By the forward travel drive in a car toy has a structure for operating the cam rotation driving mechanism, it is possible to smoothly achieve the body of the jump operation by a displacement of the jump arm.
[0041]
In particular, in the present invention, a jump arm whose one end is pivotally mounted is attached so that the other end always maintains an upward return elasticity, and a rotating cam is disposed in contact with the jump arm. Thus, the jump arm is gradually displaced to a predetermined angle within a predetermined rotation angle range of the rotary cam, and then automatically restored to its original state by a return elasticity, so that a relatively large obstacle Even if there is, there is an advantage that the jump arm does not get in the way and a smooth vehicle body jump operation can be achieved.
[Brief description of the drawings]
FIG. 1 is a schematic plan view showing one embodiment of a main part of a chassis of a radio-controlled car toy provided with a jump mechanism according to the present invention.
2 is a schematic side view showing a configuration of a main part of a jump mechanism of the radio-controlled car toy shown in FIG. 1. FIG.
3 shows a displacement operation of the jump mechanism of the radio controlled car toy shown in FIG. 2, wherein (a) is a schematic side view of an initial displacement operation state, and (b) is an outline of a maximum displacement operation state. It is a side view.
4A and 4B show a displacement operation of the jump mechanism of the radio controlled car toy shown in FIG. 2, wherein FIG. 4A is a schematic side view of a return start displacement operation state, and FIG. It is a schematic side view of an operation state.
FIG. 5 is a schematic circuit diagram of a control circuit of a wireless transmitter that controls a wirelessly controlled toy vehicle equipped with a jump mechanism according to the present invention.
FIG. 6 is a schematic circuit diagram of a drive control circuit mounted on a radio-controlled car toy equipped with a jump mechanism according to the present invention.
FIG. 7 is an explanatory diagram showing a typical jump movement trajectory of a radio-controlled car toy equipped with a jump mechanism according to the present invention.
[Explanation of symbols]
10 chassis 12 front wheel 14 rear wheel 16 steering rod 18 steering control drive motor 20 drive shaft 22 travel control drive motor 24 support shaft 26 jump arm 26a cam contact portion 27 connecting rod 28 tension coil spring 30 roller 32 rotating cam 32a claw portion 34 Operation shaft 36 Gear mechanism 38 Jump operation drive motor 38a Pinions 39, 40, 41, 42 Gears 39a, 40a, 41a Pinion section 44 Limit switch 50 Power supply battery 52 Travel control operation switch 54 Steering control operation switch 56 Jump operation switch 58 Signal Generator 60 High-frequency oscillator 62 Transmitting antenna 64 Power supply battery 66 Receiving antenna 68 Receiver 70 Signal processing circuit 72 Jump operation drive motor control circuit 80 Obstacle E Ground plane B Car body

Claims (4)

In a radio controlled car toy comprising a front wheel with a steering mechanism and a rear wheel with a travel drive mechanism,
A support shaft is provided behind the rear wheel in parallel with the axle of the rear wheel, and one end of each jump arm is pivotally attached to the support shaft so as to correspond to the left and right rear wheels. Extending the other end of the front to the front of the rear wheel,
The other end side of the jump arm is always attached so as to maintain an upward return elasticity, and a rotating cam is disposed in contact with the jump arm so that the other end side of the jump arm is resistant to the return elasticity. Configured to be pushed down and displaced,
Further, a cam rotation drive mechanism for driving the rotation cam is provided, and the cam rotation drive mechanism is operated during the forward traveling drive of the radio controlled car toy so that the vehicle body jumps by the displacement of the jump arm. A radio-controlled car toy equipped with a jump mechanism characterized by being configured. The jump arm, which is pivotally attached to the support shaft at one end, is coupled to a part of the vehicle body via a tension coil spring on one end side, and the other end side of the jump arm is always moved upward by the tensile elasticity of the coil spring. A radio-controlled car toy provided with the jump mechanism according to claim 1, wherein the toy is configured to be pulled to the right. The jump arm pivotally attached to the support shaft at one end portion forms a cam abutting portion on the one end portion side, and a claw portion provided on the rotating cam is brought into contact with the cam abutting portion so that the jump arm is predetermined. 2. A radio-controlled car toy provided with a jump mechanism according to claim 1, wherein the toy is configured to be angularly rotated. The jump mechanism according to any one of claims 1 to 3, wherein the jump arm pivotally attached to the support shaft at one end portion is provided with a roller at the other end portion for smoothly contacting the grounding surface during the jump operation. Wireless toy car toy equipped.

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