A cleaning robot that uses a single motor to drive a driving wheel and an impeller at the same time

Abstract

The present invention discloses a cleaning robot that drives a driving wheel and an impeller at the same time with a single motor, comprising a motor output shaft, a driving wheel and an impeller, wherein the impeller is provided with a first rotating shaft, the driving wheel is provided with a second rotating shaft, a connector is connected between the motor output shaft and the first rotating shaft, and a reducer is connected between the connector and the second rotating shaft. The cleaning robot completes the forward, backward and turning movements by means of the driving wheel, and the negative pressure generated by the internal impeller causes garbage to enter the internal filter element and discharge the purified water or air out of the device. The output shaft of the impeller motor of the present invention drives the first rotating shaft and the impeller to rotate at a higher speed through the connector, and the connector can drive the driving wheel to rotate at a low speed through the reducer. Therefore, the present invention can drive the impeller and the driving wheel at the same time using only one motor, and can make the driving wheel and the impeller produce different rotation speeds. The advantages of the present invention are: because only one motor is used, the equipment has a compact structure, a reasonable layout, a stable operation, a low cost and a light weight.

Description

Technical Field

[0001] The invention relates to the field of cleaning equipment, in particular to a cleaning robot which uses a single motor to drive a driving wheel and an impeller at the same time. Background Art

[0002] Cleaning robots are divided into underwater cleaning robots and dry land cleaning robots. Their principles are similar. They all rely on driving wheels to complete forward, backward and turning movements. The negative pressure generated by the internal impeller allows garbage to enter the internal filter element, and the filtered water or air will be discharged from the machine through the impeller. For example, a similar underwater cleaning robot is disclosed in the patent with announcement number CN208380175U and the name of the patent "Underwater Cleaning Robot". It uses a motor to drive the impeller to pump water, and another motor drives a driving wheel to rotate, and drives other wheels to rotate through pulleys, but this cleaning robot requires two motors to provide power of different speeds for the driving wheel and the impeller respectively.

[0003] Installing two motors inside the cleaning robot not only increases the weight of the equipment, but also takes up internal space and increases product costs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a cleaning robot with a single motor driving a driving wheel and an impeller at the same time, which has a compact structure, a reasonable layout, a stable operation, a low cost and a light weight, in view of the current status of the above-mentioned prior art.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a cleaning robot that uses a single motor to simultaneously drive a driving wheel and an impeller, comprising a driving wheel, an impeller, and a cavity for accommodating the impeller, and an exhaust port connecting the cavity and the outside world, the impeller is provided with a first rotating shaft, and the driving wheel is provided with a second rotating shaft; a first channel is provided between the cavity and the filter element; a connector is connected between the motor output shaft and the first rotating shaft, and a reducer is connected between the connector and the second rotating shaft.

[0006] To optimize the above technical solutions, the measures taken also include:

[0007] One solution of the connector is a fixing member that synchronously connects the motor output shaft and the first rotating shaft, and another solution is a planetary gear reduction mechanism that connects the motor output shaft and the first rotating shaft. The selection of the reducer includes two situations. The first situation is: when the second rotating shaft is parallel to the first rotating shaft, the reducer is any one of a planetary gear reduction mechanism and a pulley; the second situation is: when the second rotating shaft and the first rotating shaft are on the same axis, the reducer is a planetary gear reduction mechanism.

[0008] The above-mentioned cavity is located in the driving wheel, and the discharge port is located on the driving wheel; the first channel is located on the second rotating shaft; a second channel connecting the first channel and the cavity is provided in the second rotating shaft; the second rotating shaft is sleeved on the outer periphery of the first rotating shaft; the planetary gear reduction mechanism is provided with an axial hole for the first rotating shaft to rotate.

[0009] The above-mentioned planetary gear reduction mechanism includes a first planetary gear reducer and a second planetary gear reducer, the second planetary gear reducer includes a fixed second inner gear ring, a second planetary gear and a second sun gear arranged in the second inner gear ring, and a second planet carrier arranged between the second sun gear and the first planetary gear reducer; the first planetary gear reducer includes a first sun gear arranged on the second planet carrier, a first inner gear ring synchronously connected to the second rotating shaft, and a first planetary gear that sets the rotating shaft on the second inner gear ring; the connector includes a third sun gear fixed on the output shaft of the motor, a third planetary gear meshing with the third sun gear and the second inner gear ring for transmission, a fourth planet carrier arranged between the third sun gear and the second planetary gear reducer, the second sun gear is arranged on the fourth planet carrier, and the first rotating shaft is fixed on the fourth planet carrier.

[0010] A fifth planet carrier fixed on the fourth planet carrier is provided between the third planetary gear and the motor; a third planet carrier fixed on the second planet carrier is provided between the second planetary gear and the fourth planet carrier; a first planet carrier fixed on the second inner gear ring is provided between the first planetary gear and the impeller.

[0011] Compared with the prior art, the present invention is a cleaning robot that uses a single motor to drive a driving wheel and an impeller at the same time, including a motor output shaft, a driving wheel and an impeller, the impeller is provided with a first rotating shaft, the driving wheel is provided with a second rotating shaft, a connector is connected between the motor output shaft and the first rotating shaft, and a reducer is connected between the connector and the second rotating shaft. The cleaning robot completes the forward and backward and turning movements by means of the driving wheel, and the negative pressure generated by the internal impeller causes the garbage to enter the internal filter element and discharge the purified water or air out of the equipment. The output shaft of the impeller motor of the present invention drives the first rotating shaft and the impeller to rotate at a higher speed through the connector, and the connector can drive the driving wheel to rotate at a low speed through the reducer. Therefore, the present invention can drive the impeller and the driving wheel at the same time using only one motor, and can make the driving wheel and the impeller produce different speeds. The advantages of the present invention are: because only one motor is used, the equipment has a compact structure, a reasonable layout, a stable operation, a low cost, and a light weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structures of Embodiment 1, Embodiment 2 and Embodiment 3 of the present invention;

[0013] Figure 2 is a schematic structural diagram of a fourth embodiment of the present invention;

[0014] Figure 3 yes Figure 2 Schematic diagram of the decomposition of

[0015] Figure 4 yes Figure 2 Schematic diagram of the full cross-section structure;

[0016] Figure 5 yes Figure 4 Schematic diagram of the decomposition of

[0017] Figure 6 is an exploded schematic diagram of the connector and the reducer in the fourth embodiment;

[0018] Figure 7 yes Figure 6 Schematic diagram of the full cross-section structure;

[0019] Figure 8 for Figure 5 An enlarged schematic diagram of the middle drive wheel and the second rotating shaft. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0021] The marks in the accompanying drawings are: motor 1, motor output shaft 11, connector 2, third sun gear 21, third planetary gear 22, fourth planetary carrier 23, fifth planetary carrier 24, reducer 3, first planetary gear reducer 31, first sun gear 311, first planetary gear 312, first inner ring gear 313, first planetary carrier 314, second planetary gear reducer 32, second sun gear 321, second planetary gear 322, second inner ring gear 323, second planetary carrier 324, third planetary carrier 325, impeller 41, first rotating shaft 42, driving wheel 51, discharge port 511, cavity 512, second rotating shaft 52, first channel 521, second channel 522, filter element 6.

[0022] Embodiment 1, as Figure 1 As shown, a cleaning robot that drives a driving wheel and an impeller with a single motor at the same time includes a driving wheel 51, an impeller 41, and a cavity 512 for accommodating the impeller 41, and an outlet 511 connecting the cavity 512 and the outside, the impeller 41 is provided with a first rotating shaft 42, and the driving wheel 51 is provided with a second rotating shaft 52; a first channel 521 is provided between the cavity 512 and the filter element 6; a connector 2 is connected between the motor output shaft 11 and the first rotating shaft 42, and a reducer 3 is connected between the connector 2 and the second rotating shaft 52. The impeller 41 and the first rotating shaft 42 are fixed, the driving wheel 51 and the second rotating shaft 52 are fixed, the motor output shaft 11 drives the connector 2 to rotate, the connector 2 drives the first rotating shaft 42 and the impeller 41 to rotate, and the connector 2 drives the second rotating shaft 52 and the driving wheel 51 through the reducer 3 to reduce the speed.

[0023] In the embodiment, the connector 2 is a fixing member for synchronously connecting the motor output shaft 11 and the first rotating shaft 42 , the second rotating shaft 52 is parallel to the first rotating shaft 42 , and the reducer 3 is a planetary gear reduction mechanism.

[0024] Embodiment 2, as Figure 1 As shown, the second embodiment is similar to the first embodiment, except that the reducer 3 is a pulley.

[0025] Embodiment three, as Figure 1 As shown, the third embodiment is similar to the second embodiment, except that the connector 2 is a planetary gear reduction mechanism connecting the motor output shaft 11 and the first rotating shaft 42 .

[0026] Embodiment 4, as Figures 2 to 8 As shown, a cleaning robot that drives a driving wheel and an impeller with a single motor at the same time includes a driving wheel 51, an impeller 41, and a cavity 512 for accommodating the impeller 41, and an outlet 511 connecting the cavity 512 and the outside, the impeller 41 is provided with a first rotating shaft 42, and the driving wheel 51 is provided with a second rotating shaft 52; a first channel 521 is provided between the cavity 512 and the filter element 6; a connector 2 is connected between the motor output shaft 11 and the first rotating shaft 42, and a reducer 3 is connected between the connector 2 and the second rotating shaft 52. The impeller 41 and the first rotating shaft 42 are fixed, the driving wheel 51 and the second rotating shaft 52 are fixed, the motor output shaft 11 drives the connector 2 to rotate, the connector 2 drives the first rotating shaft 42 and the impeller 41 to rotate, and the connector 2 drives the second rotating shaft 52 and the driving wheel 51 through the reducer 3 to reduce the speed.

[0027] In the embodiment, Figure 4 As shown, the second rotating shaft 52 and the first rotating shaft 42 are on the same axis, and the reducer 3 is a planetary gear reduction mechanism.

[0028] In the embodiment, Figure 4 and Figure 5 As shown, the cavity 512 is located in the driving wheel 51, and the discharge port 511 is located on the driving wheel 51; the first channel 521 is located on the second rotating shaft 52; the second rotating shaft 52 is provided with a second channel 522 connecting the first channel 521 and the cavity 512; the second rotating shaft 52 is sleeved on the outer periphery of the first rotating shaft 42; the planetary gear reduction mechanism is provided with an axial hole for the first rotating shaft 42 to rotate. The air or water filtered by the filter element 6 will enter the second channel 522 through the first channel 521, then enter the cavity 512, and finally be discharged from the device through the discharge port 511. The impeller 41 is arranged in the driving wheel 51, which can further reduce the space occupied by the impeller 41; the discharge port 511 is opened on both sides of the driving wheel 51.

[0029] In the embodiment, the planetary gear reduction mechanism includes a first planetary gear reducer 31 and a second planetary gear reducer 32, the second planetary gear reducer 32 includes a fixed second inner gear ring 323, a second planetary gear 322 and a second sun gear 321 arranged in the second inner gear ring 323, and a second planet carrier 324 arranged between the second sun gear 321 and the first planetary gear reducer 31; the first planetary gear reducer 31 includes a first sun gear 311 arranged on the second planet carrier 324, a first inner gear ring 313 synchronously connected to the second rotating shaft 52, and a first planetary gear 312 with a rotating shaft arranged on the second inner gear ring 323; the connector 2 includes a third sun gear 21 fixed on the motor output shaft 11, a third planetary gear 22 meshing with the third sun gear 21 and the second inner gear ring 323 for transmission, a fourth planet carrier 23 arranged between the third sun gear 21 and the second planetary gear reducer 32, the second sun gear 321 is arranged on the fourth planet carrier 23, and the first rotating shaft 42 is fixed on the fourth planet carrier 23. The second inner gear ring 323 is fixed to the motor 1 .

[0030] In the embodiment, a fifth planet carrier 24 fixed on the fourth planet carrier 23 is provided between the third planetary gear 22 and the motor 1; a third planet carrier 325 fixed on the second planet carrier 324 is provided between the second planetary gear 322 and the fourth planet carrier 23; and a first planet carrier 314 fixed on the second inner gear ring 323 is provided between the first planetary gear 312 and the impeller 41.

[0031] In the embodiment, the first channel 521 is located on the outer peripheral wall of the second rotating shaft 52. When the second rotating shaft 52 rotates, negative pressure can be formed on the one hand, so that sewage can enter the filter element 6 more easily, and on the other hand, the edge of the first channel 521 can cut the air or water, reducing the burden of the impeller 41, so that the air or water can enter the cavity 512 more easily.

[0032] In the embodiment, the third sun gear 21 and the fourth planet carrier 23 are integrally formed, and the first sun gear 311 and the second planet carrier 324 are integrally formed.

[0033] In the fourth embodiment, the process of the driving wheel 51 rotating is: the motor output shaft 11 synchronously drives the third sun gear 21 to rotate, the third sun gear 21 drives the third planetary gear 22 to rotate along the inner wall of the second inner gear ring 323, the third planetary gear 22 drives the fourth planet carrier 23 to rotate, then the second sun gear 321 on the fourth planet carrier 23 rotates synchronously with the fourth planet carrier 23; the second sun gear 321 drives the second planetary gear 322 to rotate along the inner wall of the second inner gear ring 323, the second planetary gear 322 drives the second planet carrier 324 to rotate, then the first sun gear 311 on the second planet carrier 324 rotates synchronously with the second planet carrier 324; the first sun gear 311 drives the first planetary gear 312 to rotate, and the first planetary gear 312 drives the first inner gear ring 313 to rotate circumferentially; the first inner gear ring 313 drives the second rotating shaft 52 to rotate, and finally drives the driving wheel 51 to rotate.

[0034] In the fourth embodiment, the process of the impeller 41 rotating is as follows: the fourth planet carrier 23 directly drives the first rotating shaft 42 to rotate, and finally drives the impeller 41 to rotate.

[0035] In the fourth embodiment, the pollution suction and purification process is as follows: the air or water filtered by the filter element 6 enters the second channel 522 through the first channel 521 , then enters the cavity 512 , and finally is discharged to the outside through the discharge port 511 .

[0036] The best embodiment of the present invention has been described, and various changes or modifications made by those skilled in the art will not depart from the scope of the present invention.

Claims

1. A cleaning robot that uses a single motor to drive a driving wheel and an impeller at the same time, comprising a driving wheel (51), an impeller (41), and a cavity (512) for accommodating the impeller (41), and an outlet (511) connecting the cavity (512) and the outside, wherein: The impeller (41) is provided with a first rotating shaft (42), and the driving wheel (51) is provided with a second rotating shaft (52); a first channel (521) is provided between the cavity (512) and the filter element (6); a connector (2) is connected between the motor output shaft (11) and the first rotating shaft (42), and a reducer (3) is connected between the connector (2) and the second rotating shaft (52); The second rotating shaft (52) and the first rotating shaft (42) are on the same axis, and the reducer (3) is a planetary gear reduction mechanism; the second rotating shaft (52) is sleeved on the outer periphery of the first rotating shaft (42), the cavity (512) is located in the driving wheel (51), and the discharge port (511) is located on both sides of the driving wheel (51); the first channel (521) is located on the second rotating shaft (52); the second rotating shaft (52) is provided with a second channel (522) communicating with the first channel (521) and the cavity (512); and the planetary gear reduction mechanism is provided with an axial hole for the first rotating shaft (42) to rotate.

2. The cleaning robot according to claim 1, wherein a single motor drives a driving wheel and an impeller at the same time, wherein: The planetary gear reduction mechanism comprises a first planetary gear reducer (31) and a second planetary gear reducer (32); the second planetary gear reducer (32) comprises a fixed second inner gear ring (323), a second planetary gear (322) and a second sun gear (321) arranged in the second inner gear ring (323), and a second planet carrier (324) arranged between the second sun gear (321) and the first planetary gear reducer (31); the first planetary gear reducer (31) comprises a first sun gear (311) arranged on the second planet carrier (324), synchronously connected to the second rotating shaft (52 ) and a first planetary gear (312) with a rotating shaft arranged on the second inner gear ring (323); the connector (2) comprises a third sun gear (21) fixed on the motor output shaft (11), a third planetary gear (22) meshing with the third sun gear (21) and the second inner gear ring (323), a fourth planetary carrier (23) arranged between the third sun gear (21) and the second planetary gear reducer (32), the second sun gear (321) being arranged on the fourth planetary carrier (23), and the first rotating shaft (42) being fixed on the fourth planetary carrier (23).

3. The cleaning robot according to claim 2, wherein a single motor drives a driving wheel and an impeller at the same time, wherein: A fifth planet carrier (24) fixed on a fourth planet carrier (23) is provided between the third planetary gear (22) and the motor (1); a third planet carrier (325) fixed on the second planet carrier (324) is provided between the second planetary gear (322) and the fourth planet carrier (23); and a first planet carrier (314) fixed on the second inner gear ring (323) is provided between the first planetary gear (312) and the impeller (41).

4. A cleaning robot that uses a single motor to drive a driving wheel and an impeller at the same time according to any one of claims 2 or 3, characterized in that: The first channel (521) is located on the outer peripheral wall of the second rotating shaft (52).

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