CN113440077A - Roller assembly for cleaning and cleaner using same - Google Patents

Roller assembly for cleaning and cleaner using same Download PDF

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Publication number
CN113440077A
CN113440077A CN202110904616.1A CN202110904616A CN113440077A CN 113440077 A CN113440077 A CN 113440077A CN 202110904616 A CN202110904616 A CN 202110904616A CN 113440077 A CN113440077 A CN 113440077A
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CN
China
Prior art keywords
roller
cleaning
elastic
roller assembly
assembly according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110904616.1A
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Chinese (zh)
Inventor
黄少勤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Yunhan Intelligent Technology Co ltd
Original Assignee
Guangdong Yunhan Intelligent Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Yunhan Intelligent Technology Co ltd filed Critical Guangdong Yunhan Intelligent Technology Co ltd
Priority to CN202110904616.1A priority Critical patent/CN113440077A/en
Publication of CN113440077A publication Critical patent/CN113440077A/en
Pending legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036Parts or details of the surface treating tools
    • A47L11/4041Roll shaped surface treating tools
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/24Floor-sweeping machines, motor-driven
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/28Floor-scrubbing machines, motor-driven
    • A47L11/282Floor-scrubbing machines, motor-driven having rotary tools
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers

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  • Cleaning In General (AREA)

Abstract

The invention discloses a roller assembly for cleaning and a cleaner using the same, wherein the roller assembly for cleaning comprises a roller shaft and an elastic roller coated outside the roller shaft, the roller shaft can rotate under the action of a driving unit to drive the elastic roller to rotate for surface cleaning, the elastic roller comprises an inner roller and an outer roller, the inner roller and the outer roller are both made of elastic non-water-absorbing materials, and the hardness of the elastic material of the inner roller is less than that of the material of the outer roller. The multifunctional cleaning device is reasonable in structure, convenient to use, good in cleaning effect, good in use experience, beneficial to meeting the use requirements of sanitation and health, and wide in market prospect.

Description

Roller assembly for cleaning and cleaner using same
Technical Field
The invention relates to the technical field of cleaning equipment, in particular to a roller assembly for cleaning and a cleaner using the roller assembly.
Background
At present, the cleaning equipment is commonly used, wherein the elastic roller is the most front and most important part on the cleaning equipment, the elastic roller plays the roles of sweeping garbage and cleaning the ground, the roller is not used, all the following equipment works inefficiently, and the cleaning capacity of the ground cannot be finished, so the elastic roller has irreplaceable precedent role. At present, rollers used in a floor sweeper or a floor washing machine on the market are mostly made of cloth fiber or sponge and other materials, and have a plurality of problems and defects. For example, the cloth fiber or sponge roller absorbs water and swells but does not absorb water, then the cloth fiber or sponge roller is reduced, dried and hard, so that gaps between the cloth fiber or sponge roller and other matched components are suddenly large and suddenly small, and the cloth fiber or sponge roller is very unfavorable for cleaning the ground; secondly, as the cloth fiber or sponge roller has a common problem, the cloth fiber or sponge roller is easy to store dirt and hold dirt, is not easy to clean, is easy to go moldy and go bad to breed bacteria under the condition of long-time water and dirt, and is very unfavorable for environmental health particularly in a humid and high-temperature environment; thirdly, the cloth fiber or sponge roller is repeatedly used, becomes extremely dry and hard when no water exists, and can damage the floor and furniture of a user at home; fourthly, after the cloth fiber or sponge roller is placed for a long time, the roller can normally work only by absorbing enough water, and unnecessary troubles are added to users.
Disclosure of Invention
The invention discloses a roller assembly for cleaning and a cleaner applying the roller assembly, which solve the technical problems that a roller in the cleaner in the prior art is inconvenient to use, poor in use experience and not beneficial to meeting the use requirement of sanitation and health, and have the technical effects of convenience in use, good in use experience and being beneficial to meeting the use requirement of sanitation and health. The adopted technical scheme is as follows:
the roller shaft can rotate under the action of a driving unit to drive the elastic roller to rotate for surface cleaning, the elastic roller comprises an inner roller and an outer roller, the inner roller and the outer roller are both made of elastic non-water-absorbing materials, and the hardness of the elastic materials of the inner roller is smaller than that of the outer roller.
On the basis of the technical scheme, the outer side surface of the outer roller is rough so as to carry moisture to adhere impurities.
On the basis of the technical scheme, the outer roller is made of elastic non-water-absorbing wear-resistant materials, and the outer side surface of the outer roller is subjected to sanding treatment to have roughness.
On the basis of the technical scheme, the inner roller is tightly matched with the roller shaft and the outer roller, and the inner roller can be made of any one of silica gel, rubber, latex, TPE (thermoplastic elastomer) or TPU (thermoplastic polyurethane).
On the basis of the technical scheme, the radial thickness of the inner roller is larger than that of the outer roller.
On the basis of the technical scheme, the cleaning device further comprises a water tank which is coaxial with the elastic roller, the water tank is downwards reversely buckled and is abutted against the elastic roller, and a closed cavity for the cleaning liquid to pass through is formed between the water tank and the elastic roller.
The cleaner comprises a shell, a dust box, a driving unit and a roller assembly, wherein the roller assembly is arranged at the front end in the shell and can rotate under the action of the driving unit, the dust box is arranged in the shell and is forwards close to the roller assembly, the dust box comprises a scraping blade, one surface of the scraping blade, which is close to the roller assembly, is an arc surface corresponding to the outer peripheral surface of the roller assembly, and the arc surface and the outer peripheral surface of the roller assembly jointly form a channel for guiding garbage to pass through and enter the inner cavity of the dust box.
On the basis of the technical scheme, a water tank which is coaxial with the roller assembly is further arranged in the shell, the water tank is abutted against the elastic roller in a downward inverted buckling mode, a closed cavity for the cleaning solution to pass through is formed between the water tank and the elastic roller, two opposite side ends of the closed cavity are respectively communicated with a liquid inlet and a liquid outlet, and the cleaning solution can enter through the liquid inlet under the action of a dewatering pump and is discharged from the liquid outlet.
On the basis of the above technical solution, the wiper blade comprises an elastic tip made of TPU material, which abuts against the surface to be cleaned to guide the refuse through the channel into the dust box.
On the basis of the technical scheme, a rolling brush is axially and rotatably connected in the dust box and comprises a plurality of magic hooks which are radially arranged.
Advantageous effects
The elastic roller used for cleaning in the roller assembly comprises an inner roller and an outer roller, the inner roller and the outer roller are both made of elastic non-water-absorbing materials, the material hardness of the inner roller is smaller than that of the outer roller, and the thickness of the inner roller is larger than that of the outer roller.
The size of the roller assembly is basically unchanged before and after the roller assembly is used, so that the good matching precision of the water tank and the roller assembly can be ensured, the phenomena of gaps, water leakage and the like between the roller and the water tank caused by insufficient water absorption of cloth fiber or sponge rollers and the like in the prior art are overcome, the seamless butt joint between the roller assembly and the water tank is realized, and the cleaning solution can uniformly clean the outer roller.
According to the invention, through proper configuration of the thickness and material hardness of the inner roller and the outer roller, a large amount of garbage can be clamped and enters the dust box, and the technical problem that the garbage can not be cleaned when the amount of the garbage exceeds the wall thickness of the rollers in the prior art is solved;
drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary of the invention, and that other embodiments can be derived from the drawings provided by those skilled in the art without inventive effort.
FIG. 1: a schematic structural diagram of an explosion diagram of the cleaner after the housing is removed;
FIG. 2: the structure schematic diagram of the rolling brush;
FIG. 3: the structural schematic diagram of the cleaner top view after the shell is removed;
FIG. 4: the cross-sectional structure in the direction of A-A in FIG. 3 is schematically shown;
Detailed Description
The invention is further illustrated by the following figures and examples:
reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The roller assembly for cleaning as shown in fig. 1 to 4 comprises a roller shaft 1 and an elastic roller 2 coated outside the roller shaft 1, wherein the roller shaft 1 can rotate under the action of a driving unit to drive the elastic roller 2 to rotate for cleaning, the elastic roller 2 comprises an inner roller 21 and an outer roller 22, the inner roller 21 and the outer roller 22 are both made of elastic non-water-absorbing materials, the inner roller 21 can be made of any one of silica gel, rubber, latex, TPE or TPU, or can be made of other elastic non-water-absorbing materials such as aerogel, silica gel, hydrogel, flexible electrode materials or structural materials with springs inside, and the outer roller 22 can be made of materials which are not water-absorbing and have good wear resistance, such as rubber. In addition, equal tight fit between interior cylinder 21 and roller 1, outer cylinder 22, through the cooperation relation between interior cylinder 21 and roller 1 or outer cylinder 22, need not extra location parts and can realize roller 1, interior cylinder 21 and outer cylinder 22 synchronous revolution, be favorable to reduction in production cost. Wherein the roller assembly is detachably connected with the adjacent parts, and can be integrally detached and replaced when needing to be replaced.
The outer circumferential surface of the outer drum 22 is sanded to have roughness, i.e., the outer circumferential surface of the outer drum 22 is flat but rough, concave and convex at microscopic viewing angles, the concave and convex structure can carry cleaning solution to make the surface in a slightly wet state, the slightly wet surface can well adhere impurities such as fine dust, and after the work is completed, the slightly wet surface of the outer drum 22 can be quickly dried under the action of evaporation, so that the outer drum does not get mildewed and smelly. And the water-absorbing agent can be used again after being placed for a period of time without a longer water absorption process, and is convenient to use.
The hardness of the elastic material of the inner drum 21 is smaller than that of the material of the outer drum 22, the radial thickness of the inner drum 21 is larger than that of the outer drum 22, preferably, the inner drum 21 is made of silica gel with the radial thickness of 4.5mm and the hardness of 000 degrees or made of TPR with the hardness of 00 degrees, the outer drum 22 is made of rubber with the wall thickness of 0.5mm and the hardness of 60, and at the moment, garbage with the size larger than that of the wall thickness of the drum can be clamped to pass through, so that the garbage with larger clamping amount has advantages. In other embodiments of the present invention, the thickness, hardness and material of the inner drum 21 and the outer drum 22 may be adapted to achieve garbage gripping within a specific size range.
Still include the basin 3 with the coaxial setting of elastic roller 2, 3 down back-off ground and the 2 butts of elastic roller of basin, just form airtight chamber 4 that supplies the cleaning solution to pass through between basin 3 and elastic roller 2, the cleaning solution can be for the clear water or add the clear water of clean composition, the cleaning solution that holds in airtight chamber 4 not only can make outer cylinder 22's outer peripheral face keep little wet state, and the outer peripheral face of outer cylinder 22 can be cleaned simultaneously to the cleaning solution that flows moreover, takes away tiny dust on it, overcomes among the prior art the easy defect of depositing dirty dirt of the cylinder of porous loose materials such as cloth class fibre or sponge.
A cleaner applying the roller assembly comprises a shell (not shown), a dust box 5, a driving unit and the roller assembly, wherein the roller assembly is arranged at the front end in the shell and can rotate under the action of the driving unit, the driving unit comprises a first motor and a second motor, the first motor is arranged in an inner cavity of a roller shaft 1 and is used for driving the roller assembly to rotate, the dust box 5 is arranged in the shell and is forwards close to the roller assembly, the dust box 5 comprises a scraping blade 6, one surface, close to the roller assembly, of the scraping blade 6 is an arc surface corresponding to the outer peripheral surface of the roller assembly, the arc surface and the outer peripheral surface of the roller assembly jointly form a channel for guiding garbage to pass through and enter the inner cavity of the dust box 5, the scraping blade 6 comprises an elastic tail end made of TPU material, the elastic tail end is abutted against a surface to be cleaned so as to guide the garbage to enter the dust box 5 through the channel, wherein, when the elastic roller 2 carries a large amount of garbage to enter the channel, the elastic tail end of the scraping blade 6 and the elastic roller 2 can deform under the extrusion of the garbage to widen the channel, so that the garbage with the large amount can be allowed to enter the dust box 5 through the channel, and the use fault caused by the garbage card in the channel is avoided. In addition, when the surface of the elastic end of the scraping blade 6 forms an angle of about 30 degrees with the surface to be cleaned, the scraping blade 6 has the best effect of guiding the garbage.
When the roller assembly works, the surrounding air is disturbed inevitably to form an air flow, in order to avoid the disturbed air from carrying away the light garbage (such as hair, thread end and the like) collected in the dust box, the dust box 5 is axially and rotatably connected with the rolling brush 9, in this embodiment, the rolling brush 9 is not provided with a driving unit, the rolling brush 9 comprises a guide roller 91 with two ends rotatably connected with two side walls of the dust box 5 and a plurality of magic hooks 92 radially arranged on the roller surface of the guide roller 91, the magic hooks 92 are made of elastic material, such as nylon, wherein the magic hooks 92 comprise a plurality of rows, the plurality of rows of magic hooks 92 can be axially arranged along the peripheral surface of the guide roller 91 or spirally arranged along the peripheral surface of the guide roller 91, one end of the magic hook 92 is fixedly arranged on the peripheral surface of the guide roller 91, and the other end of the magic hook 92 is bent towards the guide roller 91 to form a hook part for hooking hair, hair and thread end, Rubbish such as thread, and the design of magic hook 92 collude portion for even the round brush 9 is passive rotatory, also can hang hair, thread etc. from elastic roller 2 well, simultaneously, just because the round brush 9 is passive rotatory, can avoid rubbish such as hair, thread etc. to twine on deflector roll 91, clearance hair, thread waste time and energy.
In addition, still be provided with the basin 3 with the coaxial setting of drum subassembly in the casing, basin 3 is in the lower back-off ground and elastic roller 2 butt, wherein, forms in the material that forms outer cylinder 22 is sunk into to the wall all around of basin 3, and the degree of depth of sinking can do the adaptability adjustment according to the operation requirement, can select preferably within 2 ~ 4mm usually. The design enables the water tank 3 and the elastic roller 2 to form a closed chamber 4 for the cleaning liquid to pass through, so that the use of an additional sealing piece for sealing and leakage prevention can be avoided, and the structure is simplified and the cost is reduced. The two opposite side ends of the closed chamber 4 are respectively communicated with a liquid inlet 7 and a liquid outlet 8, and the cleaning solution can enter through the liquid inlet 7 and be discharged from the liquid outlet 8 under the action of a water pump. In other embodiments of the present invention, in order to recycle the cleaning solution, a purifying and filtering device may be disposed on a circulation pipeline externally connecting the liquid inlet 7 and the liquid outlet 8, that is, after the clean cleaning solution enters from the liquid inlet 7, the dirty cleaning solution is discharged from the liquid outlet 8, and the discharged dirty cleaning solution may be purified by the purifying and filtering device to form a new clean cleaning solution and enter the closed chamber 4 through the liquid inlet 7 again, so that the above steps are repeated in this way, which is beneficial to saving the cleaning solution and reducing the use cost.
The present invention has been described above by way of example, but the present invention is not limited to the above-described specific embodiments, and any modification or variation made based on the present invention is within the scope of the present invention as claimed.

Claims (10)

1. The roller assembly for cleaning is characterized by comprising a roller shaft and an elastic roller (2) coated outside the roller shaft (1), wherein the roller shaft (1) can rotate under the action of a driving unit to drive the elastic roller (2) to rotate for cleaning, the elastic roller (2) comprises an inner roller (21) and an outer roller (22), the inner roller (21) and the outer roller (22) are both made of elastic non-water-absorbing materials, and the hardness of the elastic materials of the inner roller (21) is smaller than that of the materials of the outer roller (22).
2. A cleaning roller assembly according to claim 1, wherein the outer circumferential surface of the outer roller (22) is roughened to carry cleaning liquid to pick up impurities.
3. The cleaning roller assembly according to claim 2, wherein the outer roller (22) is made of an abrasion resistant material that is elastic and non-absorbent, and a circumferential surface of the outer roller (22) is roughened to have roughness.
4. The roller assembly for cleaning according to claim 2, wherein the inner roller (21) is tightly fitted with the roller shaft (1) and the outer roller (22), and the inner roller (21) is made of any one of silicone, rubber, latex, TPE or TPU.
5. The cleaning roller assembly according to any one of claims 1 to 4, wherein the inner roller (21) has a radial thickness greater than that of the outer roller (22).
6. A cleaning roller assembly according to claim 5, further comprising a sink (3) coaxially arranged with the resilient roller (2), the sink (3) being in downward, inverted abutment with the resilient roller (2) to form a closed chamber (4) between the sink (3) and the resilient roller (2) for passage of the cleaning liquid.
7. A cleaner using the roller assembly is characterized by comprising a shell, a dust box (5), a driving unit and the roller assembly according to claim 5, wherein the roller assembly is arranged at the front end in the shell and can rotate under the action of the driving unit, the dust box (5) is arranged in the shell forward and close to the roller assembly, the dust box (5) comprises a scraping blade (6), one surface, close to the roller assembly, of the scraping blade (6) is an arc surface corresponding to the outer peripheral surface of the roller assembly, and the arc surface and the outer peripheral surface of the roller assembly jointly form a channel for guiding garbage to pass through and enter an inner cavity of the dust box (5).
8. A cleaning device with a roller assembly according to claim 7, wherein a water tank (3) is disposed in the housing and is coaxial with the roller assembly, the water tank (3) is in downward reverse-buckling contact with the elastic roller (2) to form a closed chamber (4) between the water tank (3) and the elastic roller (2) for passing the cleaning solution, two opposite ends of the closed chamber (4) are respectively communicated with the liquid inlet (7) and the liquid outlet (8), and the cleaning solution can enter through the liquid inlet (7) and be discharged from the liquid outlet (8) under the action of a water pump.
9. A cleaner incorporating the roller assembly according to claim 7, wherein the wiper blade (6) includes a resilient end made of TPU material, the resilient end abutting the surface to be cleaned to guide the refuse through the passage into the dirt box.
10. A cleaner using the roller assembly according to claim 8 or 9, wherein a rolling brush (9) is axially and rotatably connected in the dust box (5), and the rolling brush (9) comprises a guide roller (91) and a plurality of magic hooks (92) radially arranged along the outer circumferential surface of the guide roller (91).
CN202110904616.1A 2021-08-07 2021-08-07 Roller assembly for cleaning and cleaner using same Pending CN113440077A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110904616.1A CN113440077A (en) 2021-08-07 2021-08-07 Roller assembly for cleaning and cleaner using same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110904616.1A CN113440077A (en) 2021-08-07 2021-08-07 Roller assembly for cleaning and cleaner using same

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CN113440077A true CN113440077A (en) 2021-09-28

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115153372A (en) * 2022-08-04 2022-10-11 深圳市杉川机器人有限公司 Roller assembly and cleaning head
WO2023221254A1 (en) * 2022-05-15 2023-11-23 帝舍智能科技(武汉)有限公司 Multi-surface contact cleaning roller mechanism and cleaning appliance

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05143155A (en) * 1991-11-19 1993-06-11 Nec Home Electron Ltd Cleaning robot
CN201814516U (en) * 2010-09-15 2011-05-04 深圳市银星智能电器有限公司 Rinsing robot
CN207837475U (en) * 2017-07-07 2018-09-11 小狗电器互联网科技(北京)股份有限公司 Ground brush assemblies and dust catcher
WO2020239446A1 (en) * 2019-05-30 2020-12-03 Lupe Technology Limited Rollers for vacuum cleaners
CN112826385A (en) * 2021-02-26 2021-05-25 深圳市赫兹家电有限公司 Water circulation system of floor cleaner

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05143155A (en) * 1991-11-19 1993-06-11 Nec Home Electron Ltd Cleaning robot
CN201814516U (en) * 2010-09-15 2011-05-04 深圳市银星智能电器有限公司 Rinsing robot
CN207837475U (en) * 2017-07-07 2018-09-11 小狗电器互联网科技(北京)股份有限公司 Ground brush assemblies and dust catcher
WO2020239446A1 (en) * 2019-05-30 2020-12-03 Lupe Technology Limited Rollers for vacuum cleaners
CN112826385A (en) * 2021-02-26 2021-05-25 深圳市赫兹家电有限公司 Water circulation system of floor cleaner

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* Cited by examiner, † Cited by third party
Title
河海大学: "《水利大辞典》", 31 October 2015 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023221254A1 (en) * 2022-05-15 2023-11-23 帝舍智能科技(武汉)有限公司 Multi-surface contact cleaning roller mechanism and cleaning appliance
CN115153372A (en) * 2022-08-04 2022-10-11 深圳市杉川机器人有限公司 Roller assembly and cleaning head

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Application publication date: 20210928