EP3744224B1

EP3744224B1 - Hand-pushed floor-washing machine capable of washing in multiple directions

Info

Publication number: EP3744224B1
Application number: EP19912203.7A
Authority: EP
Inventors: Haibo SHI; Yong Sun; Chuanjin BI
Original assignee: Nanjing Tvx Cleaning Equipment Co Ltd
Current assignee: NANJING TVX CLEANING EQUIPMENT Co Ltd
Priority date: 2019-03-27
Filing date: 2019-10-22
Publication date: 2022-02-02
Anticipated expiration: 2039-10-22
Also published as: CN109758051A; EP3744224A1; CN109758051B; EP3744224A4; WO2020192101A1

Description

FIELD OF THE INVENTION

The present invention relates to a hand-push scrubber capable of multi-directional cleaning.

DESCRIPTION OF RELATED ART

A scrubber is a device configured to clean the ground. A hand-push scrubber is turned by using manpower. Current hand-push scrubbers on the market can perform only monodirectional cleaning. This is because squeegees in the current hand-push scrubber cannot rotate, resulting in incapability of the scrubber to enter low space such as space under a table or space under a bed, etc., and cannot perform cleaning normally even if the scrubber enters the low space. The scrubber has a poor use effect and a limited application range, and needs to be further improved.
The relevant state of the art is represented by EP2627234 A1 , EP2941996 A1 and EP1841348 A1 .

SUMMARY OF THE INVENTION

In view of the above current status in the prior art, a technical problem to be resolved in the present invention is to provide a hand-push scrubber capable of multi-directional cleaning. The hand-push scrubber can enter low space such as space under a table or space under a bed, etc. to perform cleaning, greatly improving a use effect and expanding an application range. In addition, the hand-push scrubber can perform flexible turning and is easy to operate.
The technical solutions used in the present invention to resolve the above technical problem are as follows: a hand-push scrubber capable of multi-directional cleaning, including a main body, a frame, a handle connecting rod, a handle, a button, a hub motor, a swing head, and a vacuum motor, the main body including a brush disc motor, a motor mounting plate, a rotating assembly, a squeegee assembly, a locker, and a brush disc, wherein the button is respectively disposed on both sides of the handle, and the hub motor is respectively disposed on both sides of the frame symmetrically, a convex column is formed outward from a center of an upper side of the locker, the rotating assembly is disposed between the motor mounting plate and the locker, the squeegee assembly capable of swinging upward and downward is disposed on the rotating assembly, and the rotating assembly includes a connecting sleeve, a mounting sleeve, and a bottom cover ring, the connecting sleeve being fixed on a lower surface of the motor mounting plate, a sleeve portion being formed outward from a center of the lower surface of the connecting sleeve, the sleeve portion being sleeved on an exterior of the convex column, the mounting sleeve being rotatably sleeved at an outer side of the sleeve portion, an upper side of the bottom cover ring being fixed at a lower end of the sleeve portion, the bottom cover ring being sleeved on the exterior of the convex column, and the squeegee assembly being disposed on an outer side of the mounting sleeve.
Exemplarily, a counter bore is provided at a center of an upper end surface of the bottom cover ring, a lower end of the sleeve portion being inserted into the counter bore.
Exemplarily, the squeegee assembly includes a copper sleeve, a squeegee bracket, a rotatable pin shaft, a rubber pad, and a squeegee, the copper sleeve being respectively disposed on both sides of one end of the squeegee bracket, the rotatable pin shaft being respectively disposed in both of the copper sleeves, one end of the rotatable pin shaft close to the mounting sleeve being inserted into the mounting sleeve, respectively, so that the squeegee bracket is connected to the mounting sleeve and is capable of swinging upward and downward, a squeegee being disposed below the other end of the squeegee bracket and being rotatable, and the rubber pad being fixed at a middle part of a lower side of the squeegee bracket and being located above the brush disc and at an outer side of the locker.
Exemplarily, an arc-shaped groove is formed at a middle part of one end of the squeegee bracket, and a through hole is provided on both sides of the arc-shaped groove of the end of the squeegee bracket coaxially, the copper sleeves being embedded in the two through holes, respectively, and the arc-shaped groove being sleeved on an outer side of the mounting sleeve.
Exemplarily, two symmetrically distributed lugs are formed outward from a middle part of an upper side of the squeegee, the other end of the squeegee bracket being rotatably inserted and connected between the two symmetrically distributed lugs.
Exemplarily, a limiting block is formed downward on one side of the motor mounting plate.
Exemplarily, a rotation axis of the brush disc motor passes downward through the motor mounting plate, the connecting sleeve, and the bottom cover ring and is inserted into and fixed at a center of an upper end of the convex column.
Compared to the prior art, the present invention has the following advantages: The squeegee of the present invention can rotate by 180 degrees in both directions, so that the squeegee can enter low space such as space under a table or space under a bed to perform cleaning, etc. The squeegee has a multi-directional cleaning function, greatly improving a use effect and expanding an application range. In addition, the squeegee further implements flexible turning by using two hub motors during travelling, saving time and efforts, and is easy to operate.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded view of a structure according to the present invention.
FIG. 2 is a structural diagram of a main body according to the present invention.
FIG. 3 is a structural diagram of a rubber pad and a brush disc according to the present invention when separated.
FIG. 4 is a structural diagram of a rubber pad and a brush disc according to the present invention when attached.

DETAILED DESCRIPTION OF THE INVENTION

As shown in FIG. 1 to FIG. 4, a hand-push scrubber capable of multi-directional cleaning includes a main body 1, a frame 2, a handle connecting rod 3, a handle 4, a button 5, a hub motor 6, a swing head 8, and a vacuum motor 7. The main body 1 is disposed on a front side of the frame 2, the swing head 8 is disposed above a rear side of the frame 2, one end of the handle connecting rod 3 is connected to an upper end of the swing head 8, and the handle 4 is disposed on the other end of the handle connecting rod 3. A battery pack is further disposed inside the rear side of the frame 2, one button 5 is disposed on both sides of the handle 4, and one hub motor 6 is disposed on both sides of the frame 2 symmetrically. The two hub motors 6 are connected to the two buttons 5, respectively, and the vacuum motor 7 is disposed above the front side of the frame 2 for sucking water. The main body 1 includes a brush disc motor 11, a motor mounting plate 12, a rotating assembly, a squeegee assembly, a locker 18, and a brush disc 19. The motor mounting plate 12 is rotatably disposed below the front side of the frame 2, the brush disc motor 11 is fixed above the motor mounting plate 12, the locker 18 is disposed below the motor mounting plate 12, and the brush disc 19 is disposed below the locker 18. A rotation axis of the brush disc motor 11 passes downward through the motor mounting plate 12 and is connected to an upper end of the locker 18. A convex column 181 is formed outward from a center of an upper side of the locker 18. The rotating assembly is disposed between the motor mounting plate 12 and the locker 18. The squeegee assembly capable of swinging upward and downward is disposed on the rotating assembly. The rotating assembly includes a connecting sleeve 13, a mounting sleeve 16, and a bottom cover ring 17. The connecting sleeve 13 is fixed on a lower surface of the motor mounting plate 12. A sleeve portion 131 is formed outward from a center of the lower surface of the connecting sleeve 13. The sleeve portion 131 is sleeved on an exterior of the convex column 181. The mounting sleeve 16 is rotatably sleeved at an outer side of the sleeve portion 131. An upper side of the bottom cover ring 17 is fixed at a lower end of the sleeve portion 131, and the bottom cover ring 17 is sleeved on the exterior of the convex column 181. The rotation axis of the brush disc motor 11 passes downward through the motor mounting plate 12, the connecting sleeve 13, and the bottom cover ring 17 and is inserted into and fixed at a center of an upper end of the convex column 181. A counter bore 171 is provided at a center of an upper end surface of bottom cover ring 17, a lower end of the sleeve portion 131 being inserted into the counter bore 171. The squeegee assembly is disposed on an outer side of the mounting sleeve 16. The squeegee assembly includes a copper sleeve 14, a squeegee bracket 15, a pin shaft 112, a rubber pad 110, and a squeegee 111. One copper sleeve 14 is disposed on both sides of one end of the squeegee bracket 15. One rotatable pin shaft 112 is disposed in both of the copper sleeves 14. Inner ends of the two pin shafts 112 are inserted and connected inside two sides of the mounting sleeve 16, respectively, so that the squeegee bracket 15 is connected to the mounting sleeve 16 and is capable of swinging upward and downward. An arc-shaped groove 152 is formed at a middle part of one end of the squeegee bracket 15. One through hole 151 is provided on both sides of the one end of the squeegee bracket 15 coaxially. Both of the through holes 151 intersect and communicate with inner walls of two sides of the arc-shaped groove 152. The two copper sleeves 14 are embedded in the two through holes 151, respectively. The arc-shaped groove 152 is sleeved on the outer side of the mounting sleeve 16. A rotatable squeegee 111 is disposed below the other end of the squeegee bracket 15. The rubber pad 110 is fixed at a middle part of a lower side of the squeegee 15 bracket and is located above the brush disc 19 and at an outer side of the locker 18. Two symmetrically distributed lugs 1111 are formed outward from a middle part of an upper side of the squeegee 111. The other end of the squeegee bracket 15 is rotatably inserted and connected between the two lugs 1111. A limiting block 121 is formed downward on one side of the motor mounting plate 12.
During use, two sides of the handle 4 are held with both hands and any button 5 is pressed to enable the two hub motors 6 to simultaneously rotate, thereby driving the scrubber to move forward. In addition, the vacuum motor 7 is started to suck sewage on the ground (the principle belongs to the prior art), and then the brush disc motor 11 is started to drive the brush disc 19 to operate, so as to clean sludge on the ground. The locker 18 can prevent the brush disc 19 from rotating during nonuse (the principle belongs to the prior art). The battery pack disposed inside the frame 2 provides power for operation of the vacuum motor 7, the brush disc motor 11, and the two hub motors 6 (the principle belongs to the prior art); If left turning is required, only a left side of the handle 4 needs to be gently pressed. A hub motor 6 on the left side stops rotating due to the pressure, but a hub motor 6 on a right side rotates normally. In this way, in situ left turning can be easily implemented by using a speed difference between the two hub motors 6. Similarly, when right turning is required, only a right side of the handle 4 needs to be gently pressed. The hub motor 6 belongs to the prior art, and is also referred to as an in-wheel motor technology. A most important characteristic of the technology is that a power device, a transmission device, and a brake device are all integrated into a hub, greatly simplifying a mechanical part of an electric vehicle. The integrated structure adopted by the hub motor 6 is mostly used in balancing vehicles, which is convenient to mount, has a small size, and requires no regular maintenance. In addition, transmission efficiency is much higher.
Moreover, the present invention can easily enter low space such as space under a table or space under a bed, etc. to perform cleaning normally. During normal working of the scrubber, the rubber pad 110 is separated from the brush disc 19 (shown in FIG. 3). The handle 4 is pressed downward to tilt the scrubber backward. When the brush disc 19 is at 5° to the ground, the squeegee bracket 15 is lowered under gravity of the squeegee 111, and the rubber pad 110 is attached to an upper surface of the brush disc 19 (shown in FIG. 4), a friction force is generated. Therefore, the entire squeegee bracket 15 rotates with the brush disc 19, and then rotates counterclockwise around the sleeve portion 131 by using the mounting sleeve 16, and stops rotating when rotating to the turning limiting block 121. In this case, a rotation angle is 180°, and the squeegee bracket is just located right ahead the scrubber. In this case, the ground may be cleaned from the back to the front by dragging the machine backward. In this case, if a tilting angle of the handle 4 is reduced by using an upward and downward swinging function of the swing head 8, the squeegee can enter the low space such as the space under a table or the space under a bed, etc. to clean the areas under a table and under a bed, etc. through reverse cleaning. After the machine is turned left, a person is on the right side of the scrubber, and the handle 4 is pressed downward to rotate the squeegee 111 by 180 degrees. In this case, the ground may be cleaned from left to right by dragging the machine rightward. On the contrary, after the machine is turned right, the person is on the left side of the scrubber, and the handle 4 is pressed downward to rotate the squeegee 111 by 180 degrees. In this case, the ground may be cleaned from left to right by dragging the machine leftward. So far, a multi-directional cleaning effect is achieved. After the multi-directional cleaning is completed, the machine is pushed forward normally. In this case, the rubber pad 110 is separated from the brush disc 19, and under a frictional force between the squeegee 111 and the ground, both the squeegee bracket 15 and the squeegee 111 rotate clockwise around sleeve portion 131 by using the mounting sleeve 16 to return to the turning limiting block 121, that is, a forward initial position.
A scrubber is a device configured to clean the ground. A hand-push scrubber is turned by using manpower. Current hand-push scrubbers on the market can perform only monodirectional cleaning. This is because squeegees 111 in the current hand-push scrubber cannot rotate, resulting in incapability of the scrubber to enter low space such as space under a table or space under a bed, etc. and cannot perform cleaning normally even if the scrubber enters the low space. The scrubber has a poor use effect and a limited application range. The squeegee 111 of the present invention can rotate by 180 degrees in both directions, so that the squeegee can enter low space such as space under a table or space under a bed to perform cleaning, etc. The squeegee has a multi-directional cleaning function, greatly improving a use effect and expanding an application range. In addition, the squeegee further implements flexible turning by using two hub motors 6 during travelling, saving time and efforts, and is easy to operate.

Claims

A hand-push scrubber capable of multi-directional cleaning, comprising a main body (1), a frame (2), a handle connecting rod (3), a handle (4), a button (5), a hub motor (6), a swing head (8), and a vacuum motor (7), the main body comprising a brush disc motor (11), a motor mounting plate (12), a rotating assembly , a squeegee assembly, a locker (18), and a brush disc (19), characterized in that the button is respectively disposed on both sides of the handle, and the hub motor is respectively disposed on both sides of the frame symmetrically, a convex column (181) is formed outward from a center of an upper side of the locker, the rotating assembly is disposed between the motor mounting plate and the locker, the squeegee assembly capable of swinging upward and downward is disposed on the rotating assembly, and the rotating assembly comprises a connecting sleeve (13), a mounting sleeve (16), and a bottom cover ring (17), the connecting sleeve being fixed on a lower surface of the motor mounting plate, a sleeve portion (131) being formed outward from a center of the lower surface of the connecting sleeve, the sleeve portion being sleeved on an exterior of the convex column, the mounting sleeve being rotatably sleeved at an outer side of the sleeve portion, an upper side of the bottom cover ring being fixed at a lower end of the sleeve portion, the bottom cover ring being sleeved on the exterior of the convex column, and the squeegee assembly being disposed on an outer side of the mounting sleeve.
The hand-push scrubber capable of multi-directional cleaning according to claim 1, wherein a counter bore (171) is provided at a center of an upper end surface of the bottom cover ring (17), a lower end of the sleeve portion (131) being inserted into the counter bore.
The hand-push scrubber capable of multi-directional cleaning according to claim 1, wherein the squeegee assembly comprises a copper sleeve (14), a squeegee bracket (15), a rotatable pin shaft (112), a rubber pad (110), and a squeegee (111), the copper sleeve being respectively disposed on both sides of one end of the squeegee bracket, the rotatable pin shaft being respectively disposed in the copper sleeves, one end of the rotatable pin shaft close to the mounting sleeve (16) being inserted into the mounting sleeve, respectively, so that the squeegee bracket is connected to the mounting sleeve and is capable of swinging upward and downward, a squeegee being disposed below the other end of the squeegee bracket and being rotatable; and the rubber pad being fixed at a middle part of a lower side of the squeegee bracket and being located above the brush disc (19) and at an outer side of the locker (18).
The hand-push scrubber capable of multi-directional cleaning according to claim 3, wherein an arc-shaped groove (152) is formed at a middle part of one end of the squeegee bracket (15), and a through hole (151) is provided on both sides of the arc-shaped groove of the end of the squeegee bracket coaxially, the copper sleeves (14) being embedded in the through holes, respectively, and the arc-shaped groove being sleeved on an outer side of the mounting sleeve (16).
The hand-push scrubber capable of multi-directional cleaning according to claim 3, wherein two symmetrically distributed lugs (1111) are formed outward from a middle part of an upper side of the squeegee (111), the other end of the squeegee bracket (15) being rotatably inserted and connected between the two symmetrically distributed lugs.
The hand-push scrubber capable of multi-directional cleaning according to claim 3, wherein a limiting block (121) is formed downward on one side of the motor mounting plate (12).
The hand-push scrubber capable of multi-directional cleaning according to claim 1, wherein a rotation axis of the brush disc motor (11) passes downward through the motor mounting plate (12), the connecting sleeve (13), and the bottom cover ring (17) and is inserted into and fixed at a center of an upper end of the convex column (181).