CN215016780U - Walking device of sweeper - Google Patents

Abstract

The utility model discloses a traveling device of a sweeper, which comprises a frame, an universal wheel mechanism, a driven wheel and a pair of driving wheel devices, wherein the universal wheel mechanism is arranged at the front side of the bottom of the frame, the driven wheel is pivoted at the rear side of the bottom of the frame, and the driving wheel devices are arranged at the left side and the right side of the bottom of the frame; the driving wheel device comprises a bracket, a wheel, a motor, a seat body and an elastic element, wherein the wheel is pivoted on the seat body, the motor is arranged on the seat body, and the motor drives the wheel to rotate; the seat body is pivoted on the bracket; the base body is provided with a touch part, and the bracket is provided with a touch switch; the elastic element is arranged between the seat body and the bracket and provides an elastic force for swinging the seat body and the wheel when the wheel is lifted off the ground, so that the touch part is abutted against the touch switch, and the motor is controlled to stop. The utility model discloses quick-witted running gear sweeps floor can make the motor stop driving automatically when the wheel is liftoff, effectively practices thrift the electric energy, protects the battery.

Description

Walking device of sweeper

Technical Field

The utility model relates to a machine of sweeping the floor especially relates to a machine of sweeping the floor running gear.

Background

With the development of science and technology, people are busy more and more, and people do not have extra energy to clean the environmental sanitation of the house after going home from work. Therefore, many devices for cleaning floor surfaces are now available, such as vacuum cleaners, mops, etc., which require a person to operate. Due to the convenience and the practicability of the sweeper, the sweeper can be automatically cleaned at home, is popular with consumers and has wide market space. However, when the existing sweeper encounters a ground obstacle, the wheels of the sweeper may be suspended and stop moving forward, and the running state of the wheels is detected due to the lack of the detection mechanism, so that the motor can drive the wheels to idle all the time until the electric quantity is consumed, and therefore the cleaning work cannot be completed, the electric quantity is wasted, and the sweeper has the large defect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can make the motor stop the drive automatically when the wheel is liftoff, practice thrift the electric energy, protect the quick-witted running gear of sweeping the floor of battery.

In order to achieve the above object, the traveling device of the sweeper provided by the present invention comprises a frame, a universal wheel mechanism, a driven wheel and a pair of driving wheel devices, wherein the universal wheel mechanism is arranged at the front side of the bottom of the frame, the driven wheel is pivoted to the rear side of the bottom of the frame, and the driving wheel devices are arranged at the left and right sides of the bottom of the frame; the driving wheel device comprises a support, a wheel, a motor, a seat body and an elastic element, wherein the wheel is pivoted on the seat body, the motor is arranged on the seat body, and the motor drives the wheel to rotate; the seat body is pivoted on the bracket; the seat body is provided with a touch part, and the bracket is provided with a touch switch; the elastic element is arranged between the seat body and the support and provides an elastic force for swinging the seat body and the wheel when the wheel is lifted off the ground, so that the touch part is abutted against the touch switch, and the motor is controlled to stop.

Compared with the prior art, because the elastic element is arranged between the seat body and the bracket, the elastic force of the elastic element can pull the seat body to swing relative to the bracket; a touch part is arranged on the body, and a touch switch is arranged on the bracket; therefore, when the wheel is lifted off the ground, the seat body loses a torsion force for balancing the elastic element, the seat body and the wheel swing, and the touch part is driven to abut against the touch switch, so that the motor can be controlled to stop working by the touch switch. When the wheels are grounded, the touch part is separated from the touch switch, and the touch switch can control the motor to start; therefore, the utility model discloses have and can make motor automatic shutdown drive when the wheel is liftoff, guarantee that the electric quantity all is arranged in effectual cleaning to effectively practice thrift the electric energy, reach the purpose of protection battery.

Preferably, the driving wheel device further includes a speed reducing mechanism, the speed reducing mechanism is disposed on the seat, and the motor drives the wheel to rotate after speed reduction by the speed reducing mechanism. The speed reducing mechanism can enable the walking device of the sweeper to obtain a low-speed and high-torque driving force, so that wheels can be effectively driven to rotate and advance in various floors or ground types, and the power performance and the use reliability are improved.

Specifically, the reduction gear includes helical gear, first duplicate gear, second duplicate gear and drive gear, the helical gear with the output of motor is connected, the helical gear with the skewed tooth meshing of the gear wheel of first duplicate gear, the pinion of first duplicate gear with the gear wheel meshing of second duplicate gear, the pinion of second duplicate gear with drive gear meshing, drive gear with the actuating shaft of wheel.

Specifically, the reduction mechanism further comprises a third duplicate gear, wherein a large gear of the third duplicate gear is meshed with a small gear of the second duplicate gear, and a small gear of the third duplicate gear is meshed with the driving gear.

Preferably, the driving wheel device further includes a photoelectric switch and a grating, the grating is disposed on the output end of the motor, and the photoelectric switch is disposed on the base or the housing of the motor and faces the grating. Through setting up grating and photoelectric switch, the grating can rotate along with the output of motor, and the grating can let photoelectric switch produce an electrical signal and feed back to the master control, obtains a concrete speed and the distance numerical value that gos forward or retreat under the calculation of master control, and the master control can be adjusted according to the procedure that sets up according to the numerical value of feeding back, improves drive wheel device's intellectuality.

Specifically, be equipped with the gold finger board on the support, the gold finger board with touch switch reaches the photoelectric switch electricity is connected. Through setting up the gold finger board can make touch switch reaches photoelectric switch conveniently is connected with the mainboard electricity to improve the convenience of installation and dismantlement ground.

Preferably, the universal wheel mechanism includes a wheel seat, a universal wheel, a center shaft, a shaft sleeve and a snap spring, the universal wheel is rotatably disposed on the wheel seat through a rotating shaft, one end of the center shaft is fixedly connected with the wheel seat, the other end of the center shaft is sleeved in the shaft sleeve and can rotate around the center shaft of the center shaft, the center shaft is perpendicular to the rotating shaft, the snap spring is disposed on the shaft sleeve, one end of the snap spring has an elastic clamping portion, and the clamping portion can be rotationally and slidably clamped on the center shaft relative to the center shaft. The wheel seat is connected to the shaft sleeve by arranging the shaft sleeve on the middle shaft and arranging the snap spring at one end of the shaft sleeve and utilizing the elastic force of the snap spring to be clamped on the middle shaft. Therefore, the clamp spring can be used for mounting or dismounting the wheel seat and the shaft sleeve, the structure is simple, the use is very convenient, and the mounting and dismounting convenience is effectively improved.

Specifically, an annular groove is formed in the upper end of the middle shaft, and the clamping portion can be clamped in the annular groove in a circumferential sliding mode. Through setting up the ring channel, both can make the block portion with the axis card is held, simplify connection structure, avoid making the jump ring hinders the rotation of axis again, improve the compactness of structure and the convenience of equipment.

Specifically, the inner side of the wheel seat is provided with a sensing assembly for detecting the motion state of the universal wheel.

Specifically, the sensing assembly comprises a sensing transmission part, a pressure spring and an inductor, the pressure spring is sleeved outside the sensing transmission part, the sensing transmission part is arranged on the inner side of the wheel seat, and one end of the sensing transmission part is in sliding contact with the wheel surface of the universal wheel through the elastic force of the pressure spring; the other end of the induction transmission part is provided with the inductor.

Drawings

Fig. 1 is a structural diagram of the walking device of the sweeper.

Fig. 2 is a structural diagram of the driving wheel device of the walking device of the sweeper.

Fig. 3 is an internal structure diagram of the driving wheel device of the walking device of the sweeper.

Fig. 4 is a structural diagram of the speed reducing mechanism of the walking device of the sweeper.

Fig. 5 is an exploded view of the speed reducing mechanism of the walking device of the sweeper.

Fig. 6 is a structural diagram of the universal wheel mechanism of the walking device of the sweeper.

Fig. 7 is an exploded view of the universal wheel mechanism of the walking device of the sweeper.

Fig. 8 is a sectional view of the universal wheel mechanism of the walking device of the sweeper.

Detailed Description

In order to explain technical contents, structural features, and effects achieved by the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

As shown in fig. 1 to 3, the traveling device 100 of the sweeper of the present invention includes a frame 1, a universal wheel mechanism 2, a driven wheel 3 and a pair of driving wheel devices 4; the universal wheel mechanism 2 is arranged on the front side of the bottom of the frame 1 to support the front end of the sweeper walking device 100 and guide the sweeper walking device 100 during steering, and the driven wheel 3 is pivoted on the rear side of the bottom of the frame 1 to support the rear end of the sweeper walking device 100. The driving wheel devices 4 are arranged on the left side and the right side of the bottom of the rack 1; the driving wheel device 4 comprises a bracket 41, a wheel 42, a motor 43, a seat 44, an elastic element 45 and a speed reducing mechanism 46, wherein the wheel 42 is pivoted to the seat 44, the motor 43 and the speed reducing mechanism 46 are mounted on the seat 44, and the motor 43 drives the wheel 42 to rotate after being reduced by the speed reducing mechanism 46; the seat 44 is pivotally connected to the bracket 41, and the pivot shaft 44a is parallel to the pivot shaft of the wheel 42. A touch part 441 is arranged on the seat body 44, and a touch switch 411 is arranged on the bracket 41; the elastic element 45 is disposed between the seat 44 and the bracket 41, and provides an elastic force for swinging the seat 44 and the wheel 42 when the wheel 42 is lifted off the ground, so that the touch portion 441 abuts against the touch switch 411, thereby controlling the motor 43 to stop. The elastic element 45 is a tension spring. A first connecting hook 442 is disposed at one end of the base 44, and a second connecting hook 11 is disposed at one end of the frame 1 away from the first connecting hook 442; one end of the elastic member 45 is connected to the first coupling hook 442, and the other end is connected to the second coupling hook 11.

Referring to fig. 2 and 3, the driving wheel device 4 further includes a photoelectric switch 47 and a grating 48, the grating 48 is disposed on the output end of the motor 43, and the photoelectric switch 47 is disposed on the base 44 or the housing of the motor 43 and faces the grating 48. By arranging the grating 48 and the photoelectric switch 47, the grating 48 can rotate along with the output end of the motor 43, the grating 48 can enable the photoelectric switch 47 to generate an electric signal to be fed back to the main control, a specific forward or backward speed and distance numerical value can be obtained through calculation of the main control, the main control can adjust according to the fed-back numerical value and a set program, and the intelligence of the driving wheel device 4 is improved.

Referring to fig. 2 and 3, a golden finger plate 49 is disposed on the bracket 41, and the golden finger plate 49 is electrically connected to the touch switch 411 and the photoelectric switch 47. Through setting up golden finger board 49 can make touch switch 411 reaches photoelectric switch 47 is conveniently connected with the mainboard electricity to improve installation and dismantlement convenience.

As shown in fig. 4 and 5, the speed reduction mechanism 46 is disposed on the seat 44, and the motor 43 is rotated by the wheel 42 driven by the speed reduced by the speed reduction mechanism 46. The speed reducing mechanism 46 can enable the sweeper walking device 100 to obtain a low-speed and high-torque driving force, so that the wheels 42 can be effectively driven to rotate and advance in various floors or ground types, and the power performance and the use reliability are improved. Specifically, the reduction mechanism 46 includes a helical gear 461, a first duplicate gear 462, a second duplicate gear 463, a third duplicate gear 464, and a drive gear 465. The helical gear 461 is connected to the output end of the motor 43, and the helical gear 461 is engaged with the helical teeth of the large gear of the first duplicate gear 462. The pinion gear of the first duplicate gear 462 is engaged with the bull gear of the second duplicate gear 463, and the bull gear of the third duplicate gear 464 is engaged with the pinion gear of the second duplicate gear 463. The pinion of the third duplicate gear 464 meshes with the drive gear 465. The drive gear 465 is connected to a drive shaft of the wheel 42.

As shown in fig. 6 to 8, the universal wheel mechanism 2 includes a wheel seat 21, a universal wheel 22, a middle axle 23, a shaft sleeve 24 and a clamp spring 25, and an accommodating cavity 211 for accommodating the universal wheel 22 is formed by recessing the inner side of the wheel seat 21. The universal wheel 22 is rotatably disposed on the wheel base 21 through a rotating shaft 221. One end of the middle shaft 23 is fixedly connected with the wheel seat 21, the other end is sleeved in the shaft sleeve 24 and can rotate around the self central shaft, and the middle shaft 23 is perpendicular to the rotating shaft 221. The clamp spring 25 is disposed on the shaft sleeve 24, and has an elastic engaging portion 251 at one end, and the engaging portion 251 can be rotationally and slidably clamped on the central shaft 23 relative to the central shaft 23. The wheel seat 21 can be connected to the shaft sleeve 24 by providing the shaft sleeve 24 on the center shaft 23, providing the snap spring 25 at one end of the shaft sleeve 24, and engaging with the center shaft 23 by the elastic force of the snap spring 25. Therefore, the wheel seat 21 and the shaft sleeve 24 can be mounted or dismounted by using the clamp spring 25, the structure is simple, the use is very convenient, and the mounting and dismounting convenience is effectively improved.

As shown in fig. 6 to 8, an annular groove 231 is formed at the upper end of the middle shaft 23, and the engaging portion 251 can be circumferentially slidably engaged in the annular groove 231. By providing the annular groove 231, the engaging portion 251 can be engaged with the central shaft 23, so as to simplify the connection structure, and prevent the clamp spring 25 from obstructing the rotation of the central shaft 23, thereby improving the compactness of the structure and the convenience of assembly.

Referring to fig. 6 to 8, an opening 241 for the snap spring 25 to extend into is formed on the side wall of the shaft sleeve 24. The clamp spring 25 is of an annular structure, the clamp spring 25 is sleeved outside the upper end of the shaft sleeve 24, and the clamping portion 251 extends downwards along the lower edge of the clamp spring 25 and extends into the opening 241 to be clamped in the annular groove 231. Therefore, the clamp spring 25 can be sleeved outside the shaft sleeve 24, and the structure is more compact and reasonable. Fixing lugs 242 are arranged on two sides of the shaft sleeve 24, and mounting holes 243 are arranged on the fixing lugs 242. The whole universal wheel mechanism 2 can be connected to the frame 1 through the fixing lugs 242 and the mounting holes 243, the connection is simple and convenient, when the universal wheel mechanism is disassembled, the middle shaft 23, the wheel seat 21 and the universal wheel 22 can be taken out only by directly pulling down the wheel seat 21 and separating the middle shaft 23 from the clamp spring 25, and when the universal wheel mechanism is assembled, the middle shaft 23 only needs to be directly inserted into the shaft sleeve 24, so that the clamp spring 25 is clamped into the annular groove 231 again, and the assembly and the disassembly are very convenient.

The inner side of the wheel seat 21 is provided with a sensing assembly (not shown) for detecting the motion state of the universal wheel 22. Specifically, the sensing assembly comprises a sensing transmission part, a pressure spring and a sensor, the pressure spring is sleeved outside the sensing transmission part, the sensing transmission part is arranged on the inner side of the wheel seat 21, and one end of the sensing transmission part is in sliding contact with the wheel surface of the universal wheel 22 through the elastic force of the pressure spring; the other end of the induction transmission part is provided with the inductor.

When walking, the driving wheel devices 4 on the left and right sides are started simultaneously. Specifically, the motor 43 is started to drive the helical gear 461 to rotate, the helical gear 461 drives the first dual gear 462 to rotate, the first dual gear 462 drives the second dual gear 463 to rotate, the second dual gear 463 drives the third dual gear 464 to rotate, the third dual gear 464 rotates to drive the driving gear 465 to rotate, and the driving gear 465 drives the wheel 42 connected thereto to rotate. At this time, the sweeper truck 100 can move forward. When the two motors 43 rotate in opposite directions simultaneously, the sweeper walking device 100 can move backwards. When one of the two motors 43 rotates in the forward direction and the other rotates in the reverse direction, the sweeper walking device 100 can rotate around the center thereof. When one of the two motors 43 rotates forward and the other motor does not move, the sweeper walking device 100 rotates forward left or forward right. When one of the two motors 43 rotates in the opposite direction and the other motor does not move, the sweeper walking device 100 rotates leftwards and backwards or rightwards and backwards.

Compared with the prior art, because the elastic element 45 is arranged between the seat body 44 and the bracket 41, the elastic force of the elastic element 45 can pull the seat body 44 to swing relative to the bracket 41; a touch portion 441 is provided on the body, and a touch switch 411 is provided on the holder 41; therefore, when the wheel 42 is lifted off the ground, the seat 44 loses a torsion force for balancing the elastic element 45, the seat 44 and the wheel 42 swing, so that the touch portion 441 is driven to abut against the touch switch 411, and the touch switch 411 can be used to control the motor 43 to stop working. When the wheel 42 touches the ground, the touch part 441 leaves the touch switch 411, and the touch switch 411 can control the motor 43 to start; therefore, the utility model discloses have and can make motor 43 automatic shutdown drive when wheel 42 liftoff, guarantee that the electric quantity all is arranged in effectual cleaning to effectively practice thrift the electric energy, reach the purpose of protection battery.

The above disclosure is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereto, and therefore, the scope of the present invention is not limited to the above embodiments.

Claims (10)

1. The utility model provides a quick-witted running gear sweeps floor, its characterized in that: the universal wheel mechanism is arranged on the front side of the bottom of the rack, the driven wheel is pivoted to the rear side of the bottom of the rack, and the driving wheel devices are arranged on the left side and the right side of the bottom of the rack; the driving wheel device comprises a support, a wheel, a motor, a seat body and an elastic element, wherein the wheel is pivoted on the seat body, the motor is arranged on the seat body, and the motor drives the wheel to rotate; the seat body is pivoted on the bracket; the seat body is provided with a touch part, and the bracket is provided with a touch switch; the elastic element is arranged between the seat body and the support and provides an elastic force for swinging the seat body and the wheel when the wheel is lifted off the ground, so that the touch part is abutted against the touch switch, and the motor is controlled to stop.

2. The walking device of the sweeper according to claim 1, characterized in that: the driving wheel device further comprises a speed reducing mechanism, the speed reducing mechanism is arranged on the base body, and the motor drives the wheels to rotate after speed reduction of the speed reducing mechanism.

3. The walking device of the sweeper according to claim 2, characterized in that: the speed reducing mechanism comprises a helical gear, a first duplicate gear, a second duplicate gear and a driving gear, wherein the helical gear is connected with the output end of the motor, the helical gear is meshed with helical teeth of a large gear of the first duplicate gear, a small gear of the first duplicate gear is meshed with the large gear of the second duplicate gear, a small gear of the second duplicate gear is meshed with the driving gear, and the driving gear is connected with a driving shaft of a wheel.

4. The walking device of the sweeper according to claim 3, characterized in that: the reduction mechanism further comprises a third duplicate gear, a large gear of the third duplicate gear is meshed with a small gear of the second duplicate gear, and a small gear of the third duplicate gear is meshed with the driving gear.

5. The walking device of the sweeper according to claim 1, characterized in that: the driving wheel device further comprises a photoelectric switch and a grating, the grating is arranged on the output end of the motor, and the photoelectric switch is arranged on the base body or the shell of the motor and is opposite to the grating.

6. The walking device of the sweeper according to claim 5, characterized in that: be equipped with the gold finger board on the support, the gold finger board with touch switch reaches photoelectric switch electricity is connected.

7. The walking device of the sweeper according to claim 1, characterized in that: the universal wheel mechanism comprises a wheel seat, a universal wheel, a center shaft, a shaft sleeve and a clamp spring, the universal wheel is rotatably arranged on the wheel seat through a rotating shaft, one end of the center shaft is fixedly connected with the wheel seat, the other end of the center shaft is sleeved in the shaft sleeve and can rotate around the center shaft of the center shaft, the center shaft is perpendicular to the rotating shaft, the clamp spring is arranged on the shaft sleeve, one end of the clamp spring is provided with an elastic clamping part, and the clamping part can be clamped on the center shaft in a rotating and sliding mode relative to the center shaft.

8. The walking device of the sweeper according to claim 7, characterized in that: the upper end of the middle shaft is provided with an annular groove, and the clamping part can be clamped in the annular groove in a circumferential sliding manner.

9. The walking device of the sweeper according to claim 7, characterized in that: and the inner side of the wheel seat is provided with a sensing assembly for detecting the motion state of the universal wheel.

10. The walking device of the sweeper according to claim 9, wherein: the sensing assembly comprises a sensing transmission part, a pressure spring and a sensor, the pressure spring is sleeved outside the sensing transmission part, the sensing transmission part is arranged on the inner side of the wheel seat, and one end of the sensing transmission part is in sliding contact with the wheel surface of the universal wheel through the elastic force of the pressure spring; the other end of the induction transmission part is provided with the inductor.

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