Clean robot drive wheel mechanism
Technical field
The present invention is about a kind of drive wheel mechanism, the clean robot drive wheel mechanism laborsaving while referring to especially a kind of rotation, control circuit is simple and cost is low.
Background technology
At present, on market, the drive wheel works of clean robot has two kinds of situations: a kind of be by two independently motor drive, the second is to be driven by single motor; The first type of drive is used two motors, and which control circuit is complicated, and cost is high; When the second type of drive turns to, a driving wheel is motionless, and another rotates around it, although the second drives with single motor, while turning to, left and right sidesing driving wheel is not to rotate simultaneously, can not form rotation couple, and the radius of gyration is large, not laborsaving.
Summary of the invention
Laborsaving, simple in structure and clean robot drive wheel mechanism that cost is low when in view of this, main purpose of the present invention is to provide a kind of and can forms rotation couple, rotates.
For achieving the above object, the invention provides a kind of clean robot drive wheel mechanism, the gear-box that it includes motor, left driving wheel, right driving wheel and is connected with this motor, the first unilateral bearing and the second unilateral bearing are housed in this gear-box, this first unilateral bearing and the second unilateral bearing all can work in self-locking and free state, by the rotating of this motor and the control of the first unilateral bearing and the second unilateral bearing, left driving wheel can be with different rotation direction rotations from right driving wheel.
Described left driving wheel and right driving wheel are symmetrical to be installed, and without master-slave, and on same axis, described left driving wheel is provided by different travelling gears from the power of right driving wheel.
Described left driving wheel and right driving wheel with described the first unilateral bearing and the second unilateral bearing not on same axis.
Described gear-box one end is provided with the output gear of described motor, this output gear and an axle closely cooperate, this axle outer rim is provided with described the first unilateral bearing, this first unilateral bearing the 3rd gear that closely cooperated, this output gear by this first unilateral bearing to the 3rd gear transmission torque; This output gear is engaged with the first gear and the second gear simultaneously, this second gear second unilateral bearing that closely cooperated, in this second unilateral bearing, be provided with an axle, this axle and one the 6th gear closely cooperate, and this second gear passes through the second unilateral bearing to the 6th gear transmission torque; This first gear and left driving wheel axle closely cooperate, and this left driving wheel axle is connected with left driving wheel; The 3rd gear is engaged with the 4th gear, and the 4th gear connects together by spline and the 5th gear, and the 4th gear and right driving wheel are fixed, and the 5th gear and the engagement of the 6th gear.
Described the first gear is coaxial with described the 4th gear, can mutually freely rotate.
The present invention has overcome the deficiency of clean robot drive wheel mechanism on the market, and with a motor, two unilateral bearings, add the conversion of gear mechanism, has realized the independent rotation of left and right sidesing driving wheel, simultaneously to a direction or different directions rotation.Clean robot drive wheel mechanism of the present invention is simple in structure, reliable, and cost is low, economic and practical.Because its dual drive wheel rotates and turns to simultaneously, the radius of gyration is little, and resistance is little, and it is easier to make to turn to.This drive wheel mechanism can be used for all kinds of robots sweeper or dust catcher or similar cleaner.
Accompanying drawing explanation
Fig. 1 is clean robot drive wheel mechanism schematic perspective view of the present invention;
Fig. 2 is clean robot drive wheel mechanism perspective exploded view of the present invention;
Fig. 3 is clean robot drive wheel mechanism side view of the present invention;
Fig. 4 is that clean robot drive wheel mechanism of the present invention is along the cutaway view of A-A line in Fig. 2, it shows the rear output gear 1 of motor deceleration and the first gear 5, the 3rd gear 3 and the first unilateral bearing 4, coordinating between the 3rd gear 3 and the 4th gear 6, the first gears 5, the 4th gear 6, the 5th gear 7 and left and right sidesing driving wheel/axle;
Fig. 5 be clean robot drive wheel mechanism of the present invention along the cutaway view of C-C line in Fig. 2, it shows coordinating between the second gear 8 and the second unilateral bearing 9, the five gears 7 and the 6th gear 10, the 4th gear 6;
Fig. 6 be clean robot drive wheel mechanism of the present invention along the cutaway view of B-B line in Fig. 2, it shows coordinating between output gear 1 and the second gear 8, the second gears 8 and the second unilateral bearing 9, the three gears 3 and the second unilateral bearing 4.
The specific embodiment
As shown in Figures 1 to 6, the gear-box 13 that clean robot drive wheel mechanism of the present invention includes motor 12, left driving wheel 15, right driving wheel 16 and is connected with motor 12, the first unilateral bearing 4 and the second unilateral bearing 9 are housed in gear-box 13, and unilateral bearing can work in respectively self-locking and free state.By the rotating of motor and the control of unilateral bearing, left and right sidesing driving wheel can be with different rotation direction work.As shown in Figure 2, these gear-box 13 one end are provided with the output gear 1 of motor 12, this output gear 1 and an axle 2 closely cooperate, these axle 2 outer rims are provided with the first unilateral bearing 4, this first unilateral bearing 4 the 3rd gear 3 that closely cooperated, output gear 1 by the first unilateral bearing 4 to the 3rd gear 3 transmitting torques; This output gear 1 is engaged with the first gear 5 and the second gear 8 simultaneously, this second gear 8 second unilateral bearing 9 that closely cooperated, in this second unilateral bearing 9, be provided with axle 11, this axle 11 and one the 6th gear 10 closely cooperate, and the second gear 8 passes through the second unilateral bearing 9 to the 6th gear 10 transmitting torques; The first gear 5 closely cooperates with left driving wheel axle 14, and this left driving wheel axle 14 is connected with left driving wheel 15; The 3rd gear 3 is engaged with the 4th gear 6, the four gears 6 and connects together by spline and the 5th gear 7, and the 4th gear 6 is fixing with right driving wheel 16, and the 5th gear 7 and the 6th gear 10 engagements; The first gear 5 is coaxial with the 4th gear 6, can mutually freely rotate.
The course of work of clean robot drive wheel mechanism of the present invention is:
When A.Dang robot advances, i.e. (from the right side to the left) when left driving wheel 15 and right driving wheel 16 forward, output gear 1 reversion, because output gear 1 and the first gear 5 mesh, the first gear 5 forwards, therefore left driving wheel 15 forwards; Now the first unilateral bearing 4 is in self-locking state, and output gear 1 is passed to the 3rd gear 3, the three and then reversions of gear 3 by torque, so the 4th gear 6 forwards, therefore right driving wheel 16 forwards.On the other hand, the second gear 8 forwards, the 6th gear 10 reversion, the second unilateral bearing 9 is in free state, not transmitting torque.
When B.Dang robot turns to, output gear 1 forward (from the right side to the left), the first gear 5 reversions, therefore left driving wheel 15 reversions retreat; Now the first unilateral bearing 4 is in free state, and output gear 1 can not be passed to torque the 3rd gear 3; The second gear 8 reversions, the second unilateral bearing 9 is in self-locking state, and the second gear 8 is given the 6th gear 10 by transmission of torque, the 6th and then reversion of gear 10, due to the 6th gear 10 and the 6th gear 7 engagements, the 6th gear 7 forwards, therefore right driving wheel 16 forwards, forward.Like this left and right sidesing driving wheel rotation one in front and one in back, the couple when forming robot and turning to.This couple center will be positioned at the middle section of robot, and the radius of gyration is little, also more laborsaving.Set according to actual needs again turnaround time, can determine flexibly robot steering angle.
The above-mentioned course of work can be summarized by following table:
The design principle of clean robot drive wheel mechanism of the present invention is: left and right sidesing driving wheel is online at same axle, and power is provided by different travelling gears, and whether gear outputting power is controlled by two unilateral bearings.When robot normally cleans forward, left and right sidesing driving wheel rolls forward simultaneously; When running into barrier and turn to, left driving wheel backward, right driving wheel still forward, form rotation couple to be conducive to the change of direction, within the time of setting, complete robot and turn to, this situation be robot turn left to, otherwise also can realize robot turn right to, while turning to, forward, right driving wheel backward for left driving wheel.The present invention also can derive other the implementation that turns to, and before turning to, two driving wheels turn round after certain hour simultaneously, and another driving wheel is forwards, finally within the time of setting, completes robot and turns to.
In the present invention, left driving wheel and right driving wheel are symmetrical to be installed, without master-slave, and at same axis, but left and right driving wheel and motor and first, second unilateral bearing be on same axis, and the work of motor is controlled by special circuit, the power of driving wheel is provided by the gear mechanism that matches, two unilateral bearings are housed in gear mechanism, and the power of driving wheel is realized by the cooperation of gear and unilateral bearing, the motion of controlling left and right sidesing driving wheel by freedom and the self-locking of unilateral bearing.
The present invention has overcome the deficiency of clean robot drive wheel mechanism on the market, and with a motor, two unilateral bearings, add the conversion of gear mechanism, has realized the independent rotation of left and right sidesing driving wheel, simultaneously to a direction or different directions rotation.Clean robot drive wheel mechanism of the present invention is simple in structure, reliable, and cost is low, economic and practical.Because its dual drive wheel rotates and turns to simultaneously, the radius of gyration is little, and resistance is little, and it is easier to make to turn to.This drive wheel mechanism can be used for all kinds of robots sweeper or dust catcher or similar cleaner.
The above; it is only preferred embodiment of the present invention; be not intended to limit protection scope of the present invention; the driving wheel steering mechanism of robot that meets above-mentioned principle is all the scope of protection of present invention, no matter the power of driving wheel comes from coordinating of coordinating of gear and unilateral bearing or gear and clutch.