CN203342362U - Three-wheel multidirectional remote controlled toy car - Google Patents

Abstract

The utility model relates to the technical field of remote controlled toy cars, in particular to a three-wheel multidirectional remote controlled toy car which comprises a chassis and wheels connected with a direct-current motor through couplings. The direct-current motor is fixed on the chassis through a motor base, a three-wheel drive control circuit and a battery pack are arranged on the upper portion of the chassis, six U-shaped supports are fixedly connected to hubs of the wheels, and the U-shaped supports are provided with free rollers through bearings and shafts. The three-wheel multidirectional remote controlled toy car is characterized in that the number of the wheels is three, and 60-degree included angles are formed between the axes of the three wheels. According to the three-wheel multidirectional remote controlled toy car, movement in eight directions can be achieved without a steering device, rotation is convenient and quick, operation is flexible, the market blank of remote controlled toy cars is filled, entertainment and enjoyment are strong, the performance cost ratio is high, and cost of injection molding of parts when the parts are produced in a mass mode is low.

Description

The multidirectional remote-controlled toy vehicle of three-wheel

Technical field

The utility model relates to the remote-controlled toy vehicle technical field, relates in particular to the multidirectional remote-controlled toy vehicle of a kind of three-wheel.

Background technology

Remote-control toy vehicle is telecar, namely a kind ofly can pass through the model automobile of radio remote controller Long-distance Control.According to the difference of vehicle body external form, can be divided into common private savings caravan, offroad vehicle, container car, dump truck etc.Yet the remote-controlled toy vehicle on market is based on the structure of general-utility car, transfer is housed, therefore can only realize the function of advancing, retreat, turning left and turning right on toy car.Along with various telecar match technology upgrading, more and more higher to controllability, the technical difficulty requirement of telecar, urgently develop the telecar that possesses multi-direction locomitivity on market.At present Chinese patent discloses a kind of four-wheeled toy car, and the patent No. is: 201210243045.2, because this car adopts four wheels, clockwise or while being rotated counterclockwise, control complexity, and need speed slow, rotate inconvenience.

The utility model content

The purpose of this utility model is to overcome the deficiency of above-mentioned technology, and provide a kind of rotation flexibly, control the multidirectional remote-controlled toy vehicle of three-wheel easily.

The utility model for achieving the above object, by the following technical solutions: the multidirectional remote-controlled toy vehicle of a kind of three-wheel, comprise chassis and the wheel be connected with direct current generator by shaft coupling, described direct current generator is fixed on chassis by motor cabinet, top, described chassis is equipped with three-wheel Drive and Control Circuit and battery pack, be connected with six U-shaped supports on the wheel hub of described wheel, be supported with free roller by bearing and axle on described U-shaped support, it is characterized in that: described wheel is three, and the axis of described three wheels is mutually 60 ° of angles.

The axis of the described free roller be at the highest notch is mutually hexagonal angle, and extended line intersects at a point as the center on chassis.

The axis of the free roller of described wheel and the axis angle of wheel are 45 °.

Described three-wheel Drive and Control Circuit comprises:

Remote controller, for sending remote signal to vehicle;

Wireless receiving module, the remote signal of sending for receiving remote controller;

Microcontroller, adopt the STC89C52 single-chip microcomputer, with wireless receiving module, is connected, for the treatment of remote signal in wireless receiving module;

The first motor drive module, for receiving the remote signal of processing through microcontroller, and be converted to the driving signal by this remote signal, drives the first motor and the second motor;

The second motor drive module, for receiving the remote signal of processing through microcontroller, and be converted to the driving signal by this remote signal, drives the 3rd motor;

Power module, be used to microcontroller, the first motor drive module, the second motor drive module power supply.

Described STC89C52 single-chip microcomputer with are the first motor drive module and being connected of the second motor drive module open loop and control.

Described the first motor drive module and the second motor drive module adopt the L298N motor drive module.

The beneficial effects of the utility model are: the multidirectional remote-controlled toy vehicle of the design's three-wheel can be realized the motion of eight directions without transfer, and it is convenient to rotate, and controls flexibly, fills up the market vacancy of remote-controlled toy vehicle; Recreational, interesting strong; Cost performance is high, after batch production, and the part injection mo(u)lding, cost is lower.

The accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the package assembly front view of free roller;

Fig. 3 is the package assembly left view of free roller;

Fig. 4 is the A-A cutaway view of Fig. 2;

Fig. 5 is the structural representation of shaft coupling;

Fig. 6 a is the three-dimensional schematic diagram of free roller profile;

Fig. 6 b is the top view of Fig. 6 a;

Fig. 7 is that toy car is along OO ₁the direction rotation of wheel directional diagram that moves ahead;

Fig. 8 is that toy car is along OO ₁driving wheel direction of rotation figure after direction;

Fig. 9 is that toy car is rotated counterclockwise the rotation of wheel directional diagram;

Figure 10 is the toy car rotation of wheel directional diagram that turns clockwise;

Figure 11 is three-wheel Drive and Control Circuit block diagram;

In figure: 1, free roller, 2, U-shaped support, 3, screw, 4, axle, 5, packing ring, 6, deep groove ball bearing, 7, wheel hub, 8, wheel, 9, chassis, 10, L298N driver module, 11, direct current generator, 12, shaft coupling, 13, motor cabinet, 14, battery pack, 15, the STC89C52 single-chip microcomputer, 16, screw, 17, switch.

The specific embodiment

Describe the specific embodiment of the present utility model in detail below in conjunction with accompanying drawing and preferred embodiment.Below in conjunction with preferred embodiment, details are as follows for the specific embodiment that foundation the utility model is provided: as shown in Figure 1, the multidirectional remote-controlled toy vehicle of a kind of three-wheel, comprise chassis 9 and the wheel be connected with direct current generator 11 by shaft coupling 12, described direct current generator is fixed on chassis by motor cabinet 13, top, described chassis is equipped with three-wheel Drive and Control Circuit and battery pack 14, be connected with six U-shaped supports 2 on the wheel hub of described wheel, be supported with free roller 1 by deep groove ball bearing 6 and axle 4 on described U-shaped support, the axis of described three wheels is mutually 60 ° of angles, the axis of the free roller be at the highest notch of seeing when described three wheels are overlooked is mutually 120 ° and extended line and intersects at a point as the center of toy car, the axis of the free roller of described wheel and the axis angle of wheel are 45 °.Described three-wheel Drive and Control Circuit comprises respectively and a pair of L298N driver module 10 be connected with a direct current generator, STC89C52 single-chip microcomputer 15, wireless receiving module and battery pack, described STC89C52 single-chip microcomputer is connected with driver module and is open loop control, described single-chip microcomputer is connected with wireless receiving module, and described battery pack is connected with driver module with single-chip microcomputer.

As shown in Figure 2, Figure 3 and Figure 4, free roller 1 is by two bearings 6 and axle 4 assemblings, and axle 4 is supported on U-shaped support 2, at bearing 6 two ends and 2 of U-shaped bracing frames, respectively pacifies a packing ring 5.Six U-shaped supports 2 support in the oblique 45 ° of grooves on six free rollers 1 are fixed on wheel hub 7 six outer surfaces by screw 3, six square rods that wheel hub is opposite side 27mm.

As shown in Figure 1, three wheel drive are controlled on chassis three wheels 8 by shaft coupling 12 and three direct current generator 11(the first motors, the second motor, the 3rd motor) assemble respectively, direct current generator 11 is arranged on the below on chassis by motor cabinet 13.Two L298N drive plates 10, minimum system version STC89C52 single-chip microcomputer 15, battery pack 14, a power switch 17 are installed above chassis 9.Oblique line in figure on wheel means to overlook the free roller axis direction be at the highest notch of seeing.According to the parameter value of free roller, can obtain: the distance between symmetrical U-shaped support bottom surface is 22mm, and free roller axle center is 15.5mm to the distance of U-shaped support bottom surface.

Operation principle

1, the parameter of free roller:

As shown in Fig. 6 a and Fig. 6 b, Fig. 6 a is the three-dimensional schematic diagram of free roller profile, and Fig. 6 b is the top view of Fig. 6 a.

The axes O of roller ₂z ₂with wheel axis O ₁z ₁be spatial intersecting and arrange, the diaxon angle is got α=45 °.The axes O of roller ₂z ₂be supported in O ₁z ₁for axis, radius is R ₀cylinder on.The radius of wheel is R.The axial profile line parametric equation of free roller is:

$\left\{\begin{array}{c}l=z_2\\ r=\sqrt{x_2^2+{\mathrm{<figure-callout\; id="2"\; label="y"\; filenames="HDA00002817162800021.png,HDA00002817162800033.png"\; state="\{\{state\}\}">y</figure-callout>}}_2^2}\end{array}\right.---\left(1\right)$

In formula: l-roller length; R-radius of roller; x ₂-Rcos θ – A, A is two coordinate system O ₁with O ₂between distance;

-δ≤θ≤δ;

-δ≤θ≤δ.

In order to guarantee the continuity of free roller motion, registration λ is essential >=and 1.λ is that whole rollers participate in the contact wire overall length of motion and the ratio of wheel girth, is called the motion continuity coefficient of ratio, is called for short registration.

$\mathrm{\&lambda;}=\frac{N\&CenterDot;2\mathrm{\&delta;}\&CenterDot;\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="HDA00002817162800021.png,HDA00002817162800033.png"\; state="\{\{state\}\}">R</figure-callout>}}{2\mathrm{\&pi;R}}=\frac{\mathrm{N\&delta;}}{\mathrm{\&pi;}}---\left(2\right)$

In formula: the number that N is free roller.

According to harmony, the aesthetic property of omnidirectional's remote-controlled toy vehicle size, the wheel radius R=36.5mm that picks up the car, the wheel width is 43.5mm, and free roller length is 49mm, and maximum radius is got r _max=10mm.Roller is selected MR84zz micro sealing bearing, bearing bore diameter 4mm, and external diameter 8mm, through type (1) obtains through the MatLab calculation operations that programs thus: free roller least radius r _min=5.2mm, helixangleβ=0.90489, rotational angle theta=0.54664.

The checking computations of registration λ.In the design, first get λ=1, ask the quantity N of roller.

$N=\frac{\mathrm{\&pi;}}{\mathrm{\&theta;}}=\frac{\mathrm{\&pi;}}{0.54664}=5.747$

It is 6 that the quantity N of last roller rounds.

Determining N, R, roller length l, θ, after β, obtain the axial profile molded line of free roller by formula (1) through the MatLab computing that programs.

2, the mounting means of free roller

Three wheel axis are mutually to 60 ° of installations, and the forward and backward by controlling three wheels and stopping, just can realizing the motion of eight directions of the multidirectional remote-controlled toy vehicle of three-wheel.Dotted line in Fig. 7～Figure 10 in wheel means the axis direction of the free roller that contacts with ground.

Along OO ₁advance as shown in Figure 7, wheel 2 is pressed ω ₂direction rotation, wheel 3 is pressed ω ₃direction rotation, wheel friction direction is along contacting the free roller axis direction with ground, and frictional force is decomposed into X and Y component, and directions X is offset, so dolly is along OO ₁direction moves forward.

Along OO ₁retreat as shown in Figure 8, wheel 2 and wheel 3 frictional force directions X components are offset, so dolly is along OO ₁direction moves backward.

Along OO ₂and OO ₃direction moves ahead, the principle of rear row and OO ₁direction is identical.

Be rotated counterclockwise as shown in Figure 9, three wheels are pressed ω ₁, ω ₂, ω ₂direction rotation, ground gives the wheel direction as shown in the figure, and dolly be take self center of gravity and is rotated counterclockwise as original place, the center of circle.

Turn clockwise as shown in figure 10, three wheels are pressed ω ₁, ω ₂, ω ₂direction rotation, ground gives the wheel direction as shown in the figure, and dolly be take self center of gravity and is rotated counterclockwise as original place, the center of circle.

The course of work

For the motion of eight directions realizing the multidirectional remote-controlled toy vehicle of three-wheel, need design three-wheel Drive and Control Circuit control three free rollers of the multidirectional telecar of three-wheel by the direction of rotation shown in Fig. 7～Figure 10.

As shown in figure 11, in the three-wheel Drive and Control Circuit, adopt the open loop of STC89C52 single-chip microcomputer to control.

8 keys in the remote controller of 12 keys are controlled respectively 8 directions of motion of the multidirectional remote-controlled toy vehicle of corresponding three-wheel: 1 key-OO ₃retreat; 9 keys-OO ₃advance; 2 keys-OO ₁advance; 8 keys-OO ₁retreat; 3 keys-OO ₂retreat; 7 keys-OO ₂advance; 5 keys-be rotated counterclockwise; 11 keys-turn clockwise.

The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (6)

1. the multidirectional remote-controlled toy vehicle of three-wheel, comprise chassis and the wheel be connected with direct current generator by shaft coupling, described direct current generator is fixed on chassis by motor cabinet, top, described chassis is equipped with three-wheel Drive and Control Circuit and battery pack, be connected with six U-shaped supports on the wheel hub of described wheel, be supported with free roller by bearing and axle on described U-shaped support, it is characterized in that: described wheel is three, and the axis of described three wheels is mutually 60 ° of angles.

2. the multidirectional remote-controlled toy vehicle of three-wheel according to claim 1, is characterized in that, the axis of the described free roller be at the highest notch is mutually hexagonal angle, and extended line intersects at a point as the center on chassis.

3. the multidirectional remote-controlled toy vehicle of three-wheel according to claim 2, is characterized in that, the axis of the free roller of described wheel and the axis angle of wheel are 45 °.

4. according to one of any multidirectional remote-controlled toy vehicle of described three-wheel of claims 1 to 3, it is characterized in that, described three-wheel Drive and Control Circuit comprises:

Remote controller, for sending remote signal to vehicle;

Wireless receiving module, the remote signal of sending for receiving remote controller;

Microcontroller, adopt the STC89C52 single-chip microcomputer, with wireless receiving module, is connected, for the treatment of remote signal in wireless receiving module;

The first motor drive module, for receiving the remote signal of processing through microcontroller, and be converted to the driving signal by this remote signal, drives the first motor and the second motor;

The second motor drive module, for receiving the remote signal of processing through microcontroller, and be converted to the driving signal by this remote signal, drives the 3rd motor;

Power module, be used to microcontroller, the first motor drive module, the second motor drive module power supply.

5. the multidirectional remote-controlled toy vehicle of three-wheel according to claim 4, is characterized in that, described STC89C52 single-chip microcomputer with are the first motor drive module and being connected of the second motor drive module open loop and control.

6. the multidirectional remote-controlled toy vehicle of three-wheel according to claim 5, is characterized in that, described the first motor drive module and the second motor drive module adopt the L298N motor drive module.

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