A cleaning machine

Abstract

The present invention relates to a cleaning machine. The housing of the cleaning machine has a dust suction cavity with an opening facing downwards on the front side in the advancing direction of the cleaning machine. The driving wheels are rotatably connected to the housing and the rotation axis is perpendicular to the advancing direction of the cleaning machine. Through the action of the adjusting mechanism, when the cleaning machine is in the reverse state, its driving wheels are in a downward moving state. At this time, the bottom wall of the housing of the cleaning machine has a tendency to incline downward from the rear to the front. In this way, a first gap is formed at the rear of the cleaning machine for dust and sundries to enter the dust suction cavity from the rear side of the cleaning machine, ensuring that when the cleaning machine retreats, there is enough space at the rear side of the cleaning machine for dust and sundries to be sucked into the dust suction cavity. Furthermore, it is ensured that when the cleaning machine moves in all directions, once some sundries and dust are missed, the cleaning machine can be operated to retreat to achieve dust suction without having to reorient the direction.

Description

Technical Field

[0001] The present invention relates to the field of dust removal equipment, and particularly to a cleaning machine. Background Art

[0002] In existing negative pressure cleaning equipment, such as floor sweeping robots, handheld vacuum cleaners, etc., the default traveling direction is the cleaning direction of the equipment, that is, the cleaning suction ports of the cleaning equipment are all located on the front side of the traveling direction. When the equipment moves forward, the cleaning effect is good, while when the equipment moves backward, the dust removal effect is often poor. Since there are often omitted sundries and dust during the cleaning process, it is necessary for the equipment to turn around and go back along the original route once, which is very inconvenient.

[0003] For this reason, the Chinese invention patent with the patent number CN201210342193.X discloses a "Vacuum Cleaner Floor Brush with Double Suction Ports". This floor brush has a front suction port and a rear suction port respectively in front of and behind the base, and a diversion hole is provided downstream of its air inlet, and an air flow channel located upstream of the diversion hole is formed between the upper and lower wind covers. Through the setting of the front and rear two suction ports, the problem that the existing floor brush cannot be cleaned or the cleaning effect is not ideal when moving backward is solved. However, this double suction port design still has certain drawbacks. On the one hand, the rear suction port destroys the original structure of the entire air duct design, and the channel cooperating with the rear suction port will occupy the air suction flux of the total air suction channel, affecting the dust suction effect of the front suction port; on the other hand, compared with the front suction port, the rear suction port is only moved backward in position, and the ground clearance of the whole machine does not change. Dust and sundries that cannot be sucked in when moving forward still cannot be smoothly sucked in when moving backward.

[0004] The Chinese invention application with the patent number CN200580004495.4 discloses a "Ground Suction Port for a Vacuum Cleaner". This floor brush is provided with baffles at the front end and the rear end of the roller. When it moves forward or backward, the corresponding baffle can be lifted, so that the originally downward suction port forms a side slit at the front side or the rear side, thereby facilitating repeated dust removal by moving back and forth at positions such as carpets that are not easy to remove dust. However, this up-and-down change design of the suction port has a good dust suction effect on flexible surfaces such as carpets, but has a poor dust suction effect on sundries on the ground and still does not meet the conventional dust removal environment. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide a cleaning machine that can effectively remove dust from the rear of the housing when moving backward in view of the current situation of the prior art.

[0006] The second technical problem to be solved by the present invention is to provide a cleaning machine that can raise or lower the rear part of the housing by means of the backward kinetic energy in view of the current situation of the prior art.

[0007] The technical solution adopted by the present invention to solve the above first technical problem is as follows: A cleaning machine, comprising:

[0008] A housing having a dust suction cavity with an opening facing downward on the front side in the traveling direction of the cleaning machine;

[0009] A driving wheel rotatably connected to the housing and having a rotation axis perpendicular to the traveling direction of the cleaning machine,

[0010] and the driving wheel is arranged to be able to move up and down relative to the housing;

[0011] It further includes:

[0012] An adjusting mechanism, the power output end of which is drivingly connected to the driving wheel and can act on the driving wheel when the cleaning machine is in a reverse state, so that the driving wheel moves downward relative to the housing, thereby making the bottom wall of the housing incline downward from the rear to the front, and a first gap for debris and dust to enter is formed between the bottom wall at the rear side of the housing and the ground to be cleaned.

[0013] In order to facilitate the formation of gaps for dust suction on the front and rear sides respectively when the cleaning machine moves forward or backward, preferably, a roller is provided on each side of the bottom of the housing, and the roller is arranged adjacent to the dust suction cavity, so that when the cleaning machine is in a forward state, its bottom wall inclines downward from the front to the rear, thereby forming a second gap between the dust suction cavity and the ground to be cleaned. In this way, the existence of the roller is equivalent to the function of a seesaw, facilitating the switching of the cleaning state of the entire cleaning machine when the driving wheel moves up and down.

[0014] In order to ensure guidance when the driving wheel moves up and down, preferably, a vertically extending shaft hole is provided in the housing at a position corresponding to the driving wheel, and a connecting seat that moves up and down relative to the housing is further provided in the housing. The connecting seat has a mounting shaft that can be exposed outside the shaft hole, and the driving wheel is arranged on the mounting shaft. And when the cleaning machine is in a reverse state, the power output end of the adjusting mechanism acts on the connecting seat and makes the connecting seat drive the mounting shaft and the driving wheel to move downward synchronously.

[0015] The power for the driving wheel to move up and down can be in different forms. Preferably, the adjusting mechanism includes an electromagnet provided on the connecting seat and a magnetic member provided in the housing and magnetically cooperating with the electromagnet. The magnetic member is arranged below the electromagnet, and when the cleaning machine is in a reverse state, the magnetic poles of the electromagnet and the magnetic member facing each other are the same-sex magnetic poles.

[0016] To further solve the above-mentioned second technical problem, the technical solution adopted by the present invention is as follows: The cleaning machine further includes an electrical component for converting the kinetic energy of the driving wheel into electrical energy of the electromagnet. The electrical component includes a power wheel, a coil, and a magnet group. The power wheel is arranged to rotate along its own axis and is linked with the driving wheel. The magnet group includes two magnets arranged oppositely and having opposite magnetic poles. The coil is connected to the power wheel and cuts the magnetic induction lines generated by the two magnets during the rotation of the power wheel. The coil is electrically connected to the electromagnet. Such a design of the electrical component can convert the power of the driving wheel's movement into electrical energy, thereby supplying the electromagnet. Since the rotation directions of the driving wheels are different, the directions of cutting the magnetic induction lines are also different, which will cause the electromagnet to generate different magnetic properties, and then realize the attraction or repulsion with the magnetic part, thereby ensuring the up and down movement of the driving wheel.

[0017] Preferably, the connecting seat further includes a body. One side wall of the body extends outward to form the installation shaft. The body has a cavity inside. The magnet group and the coil are both arranged in this cavity. The installation shaft is provided with a through hole communicating with the cavity. The power wheel and the coil are connected together by a linkage rod passing through the through hole.

[0018] Specifically, the end wall of the installation shaft away from the body is recessed inward to form an embedding groove. The power wheel is embedded in the embedding groove, and the inner part of the embedding groove has a circumferentially arranged first tooth part. Correspondingly, a second tooth part matching the first tooth part for meshing is provided on the circumferential wall of the power wheel. The driving wheel and the power wheel are linked by the meshing of the first tooth part and the second tooth part.

[0019] To ensure that the driving wheel has a certain buffer and prevent the magnetic attraction from being too sudden, an elastic member is further included. When the connecting seat is in the downward moving state, the elastic member is in an energy storage state and acts on the connecting seat, so that the connecting seat always has a tendency to move upward and reset.

[0020] Specifically, the connecting seat is provided with accommodation cavities with openings facing downward on both the front and rear sides. The bottom of the housing is provided with positioning columns extending upward and matching the accommodation cavities at corresponding positions. The elastic member is a spring arranged in the accommodation cavity and having two ends respectively abutted against the top wall of the accommodation cavity and the upper end of the positioning column.

[0021] To realize the dust suction function of the cleaning machine, preferably, the cleaning machine further includes a blower and a separation module for separating the water and dust mixture. Along the air flow path, the separation module is located between the housing and the blower. The inlet end of the separation module is in fluid communication with the outlet end of the housing, and the outlet end of the separation module is in fluid communication with the inlet end of the blower.

[0022] Preferably, the cleaning machine is a vacuum cleaner or a floor sweeping robot.

[0023] Compared with the prior art, the advantages of the present invention are as follows: through the action of the adjusting mechanism, when the cleaning machine is in the backward state, its driving wheels are in the downward moving state. At this time, the bottom wall of the cleaning machine housing shows a tendency of tilting downward from the rear to the front. In this way, a first gap is formed at the rear of the cleaning machine for dust and sundries to enter the dust collection cavity from the rear side of the cleaning machine. This ensures that when the cleaning machine moves backward, there is enough space at the rear side of the cleaning machine for dust and sundries to be sucked into the dust collection cavity. Furthermore, it is ensured that when the cleaning machine moves in all directions, once some sundries and dust are missed, the cleaning machine can be operated to move backward to achieve dust collection without having to re-turn the direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a partial structural schematic diagram of the cleaning machine in the embodiment of the present invention;

[0025] Figure 2 is Figure 1 a structural schematic diagram from another angle;

[0026] Figure 3 is Figure 2 an overall schematic diagram with some structures omitted;

[0027] Figure 4 is Figure 3 an enlarged schematic diagram at A in

[0028] Figure 5 is a schematic diagram of the cleaning machine with some structures omitted in this embodiment;

[0029] Figure 6 is a cross-sectional view of the cleaning machine with some structures omitted in this embodiment;

[0030] Figure 7 is Figure 5 a cross-sectional structural schematic diagram from another angle;

[0031] Figure 8 is a schematic diagram of the cleaning machine in the forward state;

[0032] Figure 9 is a schematic diagram of the cleaning machine in the backward state;

[0033] Figure 10 is an overall schematic diagram of the cleaning machine in the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The present invention will be further described in detail below in conjunction with the embodiments of the drawings.

[0035] As Figures 1 to 10As shown, this is a preferred embodiment of the present invention. In this embodiment, the cleaning machine includes a housing 1, a driving wheel 3, and an adjusting mechanism 4. The housing 1 has a dust suction chamber 11 with an opening facing downward on the front side in the traveling direction of the cleaning machine, that is, the bottom of the dust suction chamber 11 is a dust suction port 111. An air outlet 113 fluidly connected to the dust suction port 111 is further provided at the rear of the housing 1. Along the air flow path, the above-mentioned air outlet 113 is located downstream of the dust suction port 111. In this way, the dust suction port 111, the dust suction chamber 11, and the air outlet 113 form a complete dust suction flow path. Of course, in order to ensure that the cleaning machine covers a sufficient cleaning area, at least two dust suction chambers are usually provided. In this embodiment, 4 dust suction chambers are taken as an example for illustration. The 4 dust suction chambers form the upstream section of the dust suction flow path, and the position adjacent to the air outlet 113 forms the downstream section of the dust suction flow path. Generally speaking, the upstream section and the downstream section of the dust suction flow path are not necessarily in the same flow direction. In fact, since the orientations of the dust suction port 111 and the air outlet 113 are often opposite in actual production. For example, the dust suction port 111 is usually arranged downward to facilitate sucking dust on the bottom surface, table surface and other surfaces. And in order to facilitate exhaust, the air outlet 113 often faces upward or laterally. Therefore, in order to cooperate with the design of the dust suction port 111, the dust suction flow path in the upstream section is basically vertical or arranged at a slight angle to the vertical; and in order to cooperate with the design of the air outlet 113, the dust suction chamber 11 is basically horizontal or arranged at a slight angle to the horizontal in the downstream section.

[0036] Of course, in order to achieve the dust suction function, in addition to the cooperation of various components in the housing 1, other structures are also required to cooperate to achieve it: The cleaning machine further includes a blower 7 and a separation module 8 for separating the water and dust mixture. Along the air flow path, the separation module 8 is located between the housing 1 and the blower 7. The inlet end of the separation module 8 is fluidly connected to the outlet end of the housing 1, and the outlet end of the separation module 8 is fluidly connected to the inlet end of the blower 7. The cleaning machine can be a vacuum cleaner, a floor sweeping robot or similar cleaning equipment. Refer to Figure 10 , and in this embodiment, a vacuum cleaner is taken as an example for explanation, but it is not limited thereto.

[0037] In this embodiment, the above-mentioned brush head 14 is used to clean the object to be cleaned, and the brush head 14 is arranged at the dust suction port 111 of the dust suction chamber 11. The brush head 14 here can be a fixed brush or other movable brush heads such as a rotary brush. In this embodiment, a disk brush is adopted. The disk brush realizes cleaning by rotating, and the rotation axis of the disk brush extends vertically to ensure the maximum contact area with the surface to be cleaned, thereby improving the cleaning effect.

[0038] In this embodiment, the above-mentioned drive wheel 3 is rotatably connected to the housing 1, and the rotation axis is perpendicular to the traveling direction of the cleaning machine. The drive wheel 3 is arranged to be movable up and down relative to the housing 1. The power output end of the adjusting mechanism 4 is drivingly connected to the drive wheel 3 and can act on the drive wheel 3 when the cleaning machine is in the reverse state, so that the drive wheel 3 moves downward relative to the housing 1, thereby making the bottom wall of the housing 1 incline downward from the rear to the front, and a first gap 4a for sundries and dust to enter is formed between the bottom wall at the rear side of the housing 1 and the ground to be cleaned.

[0039] In this embodiment, the up and down movement of the drive wheel 3 does not directly cause the cleaning machine to switch states correspondingly. Instead, on each side of the bottom of the housing 1, a roller 12 is provided. The roller 12 is arranged adjacent to the dust suction cavity 11, so that when the cleaning machine is in the forward state, its bottom wall inclines downward from the front to the rear, thereby forming a second gap 4b between the dust suction cavity 11 and the ground to be cleaned. The presence of the roller is equivalent to the function of a seesaw, facilitating the switching of the cleaning state of the entire cleaning machine when the drive wheel 3 moves up and down.

[0040] In this embodiment, a vertically extending shaft hole 13 is formed in the housing 1 at a position corresponding to the drive wheel 3. A connecting seat 5 that moves up and down relative to the housing 1 is further provided in the housing 1. The connecting seat 5 has a mounting shaft 51 that can be exposed outside the shaft hole 13. The drive wheel 3 is provided on the mounting shaft 51. And when the cleaning machine is in the reverse state, the power output end of the adjusting mechanism 4 acts on the connecting seat 5 and makes the connecting seat 5 drive the mounting shaft 51 and the drive wheel 3 to move downward synchronously. The connecting seat 5 further includes a body 52, and a mounting shaft 51 extends outward from one of the side walls of the body 52.

[0041] In this embodiment, the adjusting mechanism 4 includes an electromagnet 41 disposed on the connecting seat 5 and a magnetic member 42 disposed within the housing 1 and magnetically cooperating with the electromagnet 41. The magnetic member 42 is arranged below the electromagnet 41, and when the cleaning machine is in the retracted state, the magnetic poles of the electromagnet 41 and the magnetic member 42 facing each other are like magnetic poles. It further includes an electrical component 43 for converting the kinetic energy of the drive wheel 3 into electrical energy of the electromagnet 41. The electrical component 43 includes a power wheel 431, a coil 432, and a magnet group 433. The power wheel 431 is arranged to rotate about its own axis, and the power wheel 431 is linked with the drive wheel 3. The magnet group 433 includes two magnets arranged opposite to each other and having opposite magnetic poles. The coil 432 is connected to the power wheel 431 and cuts the magnetic induction lines generated by the two magnets during the rotation of the power wheel 431. The coil 432 is electrically connected to the electromagnet 41. The above-mentioned body 52 has a cavity 5a therein, and both the magnet group 433 and the coil 432 are disposed in the cavity 5a. A through hole communicating with the cavity 5a is provided through the mounting shaft 51. The power wheel 431 and the coil 432 are connected together by a linkage rod 511 passing through the through hole. The mounting shaft 51 is recessed inwardly on the end wall away from the body 52 to form an embedding groove 512. The power wheel 431 is embedded in the embedding groove 512, and the inner part of the embedding groove 512 has a first tooth portion arranged circumferentially. Correspondingly, a second tooth portion matching the first tooth portion is provided on the circumferential wall of the power wheel 431. The drive wheel 3 and the power wheel 431 are linked through the engagement of the first tooth portion and the second tooth portion.

[0042] In this embodiment, in order to ensure that the drive wheel has a certain buffer and prevent the magnetic attraction from being too sudden, an elastic member 6 is further included. When the connecting seat 5 is in the state of moving downward, the elastic member 6 is in the energy storage state and acts on the connecting seat 5 to make the connecting seat 5 always have a tendency to move upward and reset. Specifically, the connecting seat 5 is provided with receiving cavities 5b with openings facing downward on both the front and rear sides. The bottom of the housing 1 is provided with positioning columns 5c extending upward and matching the receiving cavities 5b at corresponding positions. The elastic member 6 is a spring disposed in the receiving cavity 5b and having two ends respectively abutted against the top wall of the receiving cavity 5b and the upper end of the positioning column 5c.

[0043] As used in the present invention, "fluid communication" refers to the spatial position relationship between two components or parts (hereinafter uniformly referred to as the first part and the second part respectively), that is, a fluid (gas, liquid or a mixture of both) can flow from the first part along a flow path or / and be transported to the second part. It can be that the first part and the second part are directly connected, or the first part and the second part are indirectly connected through at least one third party. The third party can be a fluid passage such as a pipe, a channel, a conduit, a flow guiding member, a hole, a groove, etc., or a chamber allowing the fluid to flow through or a combination of the above.

[0044] In addition, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used in the description and claims of the present invention to describe various exemplary structural parts and elements of the present invention. However, these terms are used herein only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to the directions opposite to or consistent with the direction of gravity.

Claims

1. A cleaning machine, comprising: A housing (1) having a dust suction cavity (11) with an opening facing downwards on the front side in the traveling direction of the cleaning machine; A driving wheel (3) rotatably connected to the housing (1) and having a rotation axis perpendicular to the traveling direction of the cleaning machine, And the driving wheel (3) is arranged to be able to move up and down relative to the housing (1); It further includes: An adjusting mechanism (4) with a power output end drivingly connected to the driving wheel (3) and capable of acting on the driving wheel (3) when the cleaning machine is in a reverse state, so that the driving wheel (3) moves downward relative to the housing (1), thereby causing the bottom wall of the housing (1) to incline downward from the rear to the front, and a first gap (4a) for sundries and dust to enter is formed between the bottom wall at the rear side of the housing (1) and the ground to be cleaned; On each of the two sides at the bottom of the housing (1), a roller (12) is provided, and the roller (12) is arranged adjacent to the dust suction cavity (11), so that when the cleaning machine is in a forward state, its bottom wall inclines downward from the front to the rear, thereby forming a second gap (4b) between the dust suction cavity (11) and the ground to be cleaned; The housing (1) is provided with a vertically extending shaft hole (13) at a position corresponding to the driving wheel (3), and a connecting seat (5) that moves up and down relative to the housing (1) is further provided inside the housing (1). The connecting seat (5) has a mounting shaft (51) that can be exposed outside the shaft hole (13), and the driving wheel (3) is provided on the mounting shaft (51). And when the cleaning machine is in a reverse state, the power output end of the adjusting mechanism (4) acts on the connecting seat (5), and makes the connecting seat (5) drive the mounting shaft (51) and the driving wheel (3) to move downward synchronously.

2. The cleaning machine according to claim 1, characterized in that: The adjusting mechanism (4) includes an electromagnet (41) provided on the connecting seat (5) and a magnetic member (42) provided inside the housing (1) and magnetically cooperating with the electromagnet (41). The magnetic member (42) is arranged below the electromagnet (41), and when the cleaning machine is in a reverse state, the magnetic poles of the electromagnet (41) and the magnetic member (42) facing each other are the same-sex magnetic poles.

3. The cleaning machine according to claim 2, characterized in that: It further includes an electrical component (43) for converting the kinetic energy of the driving wheel (3) into electrical energy of the electromagnet (41). The electrical component (43) includes a power wheel (431), a coil (432), and a magnet group (433). Among them, the power wheel (431) is arranged to rotate along its own axis, and the power wheel (431) is linked with the driving wheel (3). The magnet group (433) includes two magnets arranged opposite to each other and having opposite-sex magnetic poles. The coil (432) is connected to the power wheel (431), and cuts the magnetic induction lines generated by the two magnets during the rotation of the power wheel (431). The coil (432) is electrically connected to the electromagnet (41).

4. The cleaning machine according to claim 3, characterized in that: The connecting seat (5) further includes a body (52). An installation shaft (51) extends outward from one of the side walls of the body (52). A cavity (5a) is formed inside the body (52). The magnet group (433) and the coil (432) are both arranged in the cavity (5a). A through hole communicating with the cavity (5a) is formed through the installation shaft (51). The power wheel (431) and the coil (432) are connected together by a linkage rod (511) passing through the through hole.

5. The cleaning machine according to claim 4, characterized in that: An embedding groove (512) is formed by inward depression on the end wall of the installation shaft (51) far from the body (52). The power wheel (431) is embedded in the embedding groove (512). The inside of the embedding groove (512) has a first tooth portion arranged circumferentially. A second tooth portion matching the first tooth portion for meshing is provided on the circumferential wall of the power wheel (431). The driving wheel (3) and the power wheel (431) form a linkage through the meshing of the first tooth portion and the second tooth portion.

6. The cleaning machine according to claim 1, characterized in that: An elastic member (6) is further included. When the connecting seat (5) is in a downward moving state, the elastic member (6) is in an energy storage state and acts on the connecting seat (5) so that the connecting seat (5) always has a tendency to move upward and reset.

7. The cleaning machine according to claim 6, wherein: Receiving cavities (5b) with openings facing downward are provided on both the front and rear sides of the connecting seat (5). Positioning columns (5c) extending upward and matching the receiving cavities (5b) are provided at corresponding positions on the bottom of the housing (1). The elastic member (6) is a spring arranged in the receiving cavity (5b) and having two ends respectively abutted against the top wall of the receiving cavity (5b) and the upper end of the positioning column (5c).

8. The cleaning machine according to any one of claims 1 to 7, characterized in that: The cleaning machine further includes a blower (7) and a separation module (8) for separating a water and dust mixture. Along the air flow path, the separation module (8) is located between the housing (1) and the blower (7). The inlet end of the separation module (8) is in fluid communication with the outlet end of the housing (1). The outlet end of the separation module (8) is in fluid communication with the inlet end of the blower (7).

9. The cleaning machine according to claim 8, characterized in that: The cleaning machine is a vacuum cleaner or a floor sweeping robot.

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