CN212788401U - Portable electric composite scrubbing device - Google Patents
Portable electric composite scrubbing device Download PDFInfo
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- CN212788401U CN212788401U CN202021373683.2U CN202021373683U CN212788401U CN 212788401 U CN212788401 U CN 212788401U CN 202021373683 U CN202021373683 U CN 202021373683U CN 212788401 U CN212788401 U CN 212788401U
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Abstract
The invention provides a portable electric composite scrubbing device, which comprises a protective shell, a driving component, a brush cleaning component and a pressurizing water spraying component, wherein the protective shell is provided with a brush head; the protective shell comprises a protective cover B and a protective shell C, and a positioning plate is arranged in the protective shell C; the driving assembly comprises a transmission shaft A, a worm wheel is mounted at the upper end of the transmission shaft A, a gear A is mounted at the lower end of the transmission shaft A, a power supply and a motor are arranged on the top of the protective cover B, and a gear B is arranged at the bottom of the protective cover B; the brush cleaning assembly comprises a transmission shaft C, a gear C is connected to the upper end of the transmission shaft C, a brush A is fixed to the lower end of the transmission shaft C, an arc-shaped transmission rod group is arranged at the bottoms of the gear A and the gear B, clamping grooves are evenly formed in the top of the brush A, a push rod is installed in the clamping grooves, a brush B is arranged at the outer end of the push rod, a drive rod is arranged at the inner end of the brush B, and arc-shaped. The invention solves the problem of low efficiency of scrubbing plane objects, and has the advantages of good portability, high cleaning efficiency, multiple scrubbing, self-carrying of a pressure device and good use comfort.
Description
Technical Field
The invention relates to the technical field of scrubbing tools, in particular to a portable electric composite scrubbing device.
Background
In daily life, people often need to scrub indoor floors, glass and table tops when cleaning, people often wet the surface of an object, and then use rags to scrub. The manual scrubbing consumes a great deal of time and energy, has low efficiency and is difficult to meet the fast-paced daily life requirements of modern people.
The existing quick scrubbing device (patent number: CN 201620785430.3) realizes the reciprocating motion of scrubbing through a half-tooth gear, has single scrubbing form, poor cleaning effect and low efficiency, and often needs secondary cleaning. The external water source reduces the convenience of the device when in use. In addition, the water spray opening of the device is aligned with the brush, so that water is easy to splash. In view of the above problems, the invention provides a portable electric composite scrubbing device which has the advantages of high efficiency, multiple scrubbing, self-carried pressure device, good use comfort and the like.
Disclosure of Invention
In order to solve the problems, the invention discloses a portable electric composite scrubbing device which solves the problem of low efficiency of scrubbing plane objects and has the advantages of good portability, high cleaning efficiency, multiple scrubbing, self-carrying of a pressurizing device and good use comfort.
The specific scheme is as follows:
a portable electric composite scrubbing device, characterized in that: comprises a protective shell, a driving component, a brush cleaning component and a pressurizing water spraying component; the protective shell comprises a protective cover B, the protective cover B is of a horizontally arranged disc-shaped structure, a cylindrical protective shell C matched with the protective cover B is arranged on the outer side of the protective shell B, the protective cover B is arranged in the upper end of the protective shell C, and a horizontally arranged positioning plate is arranged in an inner cavity of the protective shell C; the driving assembly comprises a transmission shaft A, the transmission shaft A vertically penetrates through the protective cover B, the upper end and the lower end of the transmission shaft A are respectively arranged on the upper side and the lower side of the protective cover B, a worm wheel is arranged at the upper end of the transmission shaft A in a matched mode, a gear A is arranged at the lower end of the transmission shaft A in a matched mode, a power supply and a motor are further arranged on the top of the protective cover B, a worm is arranged at the output end of the motor in a matched mode, the worm is connected with the worm wheel in a matched mode, a gear B meshed with the gear A is arranged at the bottom of the protective cover; the brush cleaning assembly comprises a vertically arranged transmission shaft C, the transmission shaft C is of a hollow cylindrical structure and penetrates through the positioning plate, the upper end and the lower end of the transmission shaft C are respectively arranged at the upper side and the lower side of the positioning plate, a gear C is rotatably connected at the upper end of the transmission shaft C, a brush A is fixedly connected at the lower end of the transmission shaft C, a circular arc transmission rod group A and a circular arc transmission rod group B are respectively arranged at the bottoms of the gear A and the gear B, the circular arc transmission rod group A comprises four transmission rods A which are uniformly distributed and vertically arranged, the circular arc transmission rod group B comprises four transmission rods B which are uniformly distributed and vertically arranged, the distance from each transmission rod A to the center of the transmission shaft A is the same as the distance from each transmission rod B to the center of the transmission shaft B, the distance from each adjacent two transmission rods A is the same as the distance from each adjacent two transmission rods B, the brush A is of a horizontally arranged disc-shaped structure, the middle of the brush A is fixedly connected with the lower end of a transmission shaft C, clamping grooves are uniformly distributed in the top of the brush A along the circumferential direction, the clamping grooves are strip-shaped and are arranged along the radial direction of the brush A, a push rod capable of sliding along the clamping grooves is installed in the clamping grooves in a matched mode, a brush B is arranged at the outer end of the push rod, a vertically arranged driving rod is arranged at the upper portion of the inner end of the push rod, arc slotted holes with the same number as the clamping grooves are uniformly distributed in the gear C along the circumferential direction of the gear C, the distance from the inner end of each arc slotted hole to the center of the gear C is smaller than that from the outer end of; the pressurizing water spraying component comprises an air cylinder and an air storage tank which are arranged on a positioning plate, a reset spring A is arranged on a push rod of the air cylinder in a matched mode, a round collision block is arranged at the end part of the push rod in a matched mode, the round collision block is in contact with teeth of a gear C, an inner cavity of the air cylinder is communicated with an inner cavity of the air storage tank through an air inlet pipe, a check valve A is arranged on the air inlet pipe, a check valve B is further arranged on the air cylinder, a water bag is arranged in the inner cavity of the air storage tank, a pressure release valve communicated with the inner cavity of the air storage tank is arranged on the outer side of the air storage tank, a liquid inlet pipe is connected onto the water bag, a valve switch and a water cover are arranged at the end part of the liquid inlet pipe, the inner cavity of the water bag is connected with the upper, and the inner end of the triangular compression block is contacted with the teeth of the gear C, and the outer end of the triangular compression block is propped against the water pipe.
As a further improvement of the present invention, the bottom of the protective shell C is provided with a circular brush C adapted thereto.
As a further improvement of the invention, the brush bristles are uniformly distributed at the bottoms of the brush A, the brush B and the brush C.
As a further improvement of the invention, the top of the protective cover is also provided with a handle and a protective shell A.
As a further improvement of the invention, the handle is provided with a device switch which is in signal connection with the motor.
As a further improvement of the invention, an electronic flowmeter is also arranged on the water pipe in a matching way, and the electronic flowmeter is in signal connection with an alarm arranged on the protective cover.
As a further improvement of the invention, the air storage tank is fixedly arranged on the positioning plate through a fixing piece.
The invention has the beneficial effects that:
1. the four-fold composite brushing can be realized, the water resource is saved, and the efficiency is improved;
2. the self-contained pressurizing water spray assembly is provided with a pressure relief valve on the air storage tank, so that the pressure is kept stable, and the occurrence of accidents is avoided;
3. the washing effect of the device can be further improved by adding a cleaning agent into the water bag;
4. need not external water source, the device can one-hand use, portable, and the mobility is stronger, reduces operating personnel's working strength.
Drawings
Fig. 1 is a schematic view of a portable electric hybrid scrub appliance according to the present invention.
FIG. 2 is a bottom schematic view of a portable electric hybrid scrub appliance of the present invention.
Fig. 3 is a schematic structural view of fig. 1 with the handle and the protective shell a removed.
Fig. 4 is a schematic structural view of fig. 3 with the worm, the worm wheel and the protective shell B removed.
Fig. 5 is a schematic view of the structure of fig. 4 with the gear a and the gear B removed.
FIG. 6 is a schematic view of the gearing relationship of the portable electric composite scrub device of the present invention.
Fig. 7 is a partially enlarged view of a in fig. 5.
Fig. 8 is a schematic transmission diagram of the gear C and the push rod and the brush B.
Fig. 9 is a partial enlarged view of B in fig. 8.
FIG. 10 is a schematic view of a pressurized water spray assembly of a portable electric compound scrubbing apparatus of the present invention.
List of reference numerals:
1-handle, 11-protective shell A, 12-device switch, 2-protective cover B, 21-alarm, 3-protective shell C, 31-valve switch, 32-water cover, 33-positioning plate, 34-fixing piece, 35-clamping groove, 4-worm, 41-motor, 42-power supply, 5-electronic flowmeter, 6-worm wheel, 61-transmission shaft A, 601-transmission shaft A, 602-reset spring B, 603-transmission shaft B, 62-gear A, 63-transmission shaft B, 64-gear B, 65-gear C, 66-triangular compression block, 67-transmission shaft C, 7-brush A, 71-brush B, 72-brush C, 73-push rod, 74-drive rod, 75-nozzle, 8-gas storage tank, 81-pressure relief valve, 82-water pipe, 83-water bag, 9-gas cylinder, 91-gas inlet pipe, 92-one-way valve A, 93-one-way valve B, 94-return spring A, 95-circular collision block.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in the figure, the portable electric composite scrubbing device comprises a protective shell, a driving component, a brush cleaning component and a pressurizing water spray component; the protective shell comprises a protective cover B2, the protective cover B2 is a horizontally arranged disc-shaped structure, a cylindrical protective shell C3 matched with the protective cover B2 is arranged on the outer side of the protective shell B2, the protective cover B2 is arranged in the upper end of the protective shell C3, and a horizontally arranged positioning plate 33 is arranged in an inner cavity of the protective shell C3; the driving assembly comprises a transmission shaft A61, the transmission shaft A61 vertically penetrates through the protective cover B2, the upper end and the lower end of the transmission shaft A61 are respectively arranged at the upper side and the lower side of the protective cover B2, a worm wheel 6 is arranged at the upper end of the transmission shaft A61 in a matching mode, a gear A62 is arranged at the lower end of the transmission shaft A61 in a matching mode, a power supply 42 and a motor 41 are further arranged on the top of the protective cover B2, a worm 4 is arranged at the output end of the motor 41 in a matching mode, the worm 4 is connected with the worm wheel 6 in a matching mode, a gear B64 meshed with the gear A62 is arranged at; the brush cleaning assembly comprises a vertically arranged transmission shaft C67, a transmission shaft C67 is of a hollow cylindrical structure and penetrates through the positioning plate 33, the upper end and the lower end of the transmission shaft C67 are respectively arranged at the upper side and the lower side of the positioning plate 33, wherein the upper end of the transmission shaft C67 is rotatably connected with a gear C65, the lower end of the transmission shaft C67 is fixedly connected with a brush A7, the bottoms of the gear A62 and the gear B64 are respectively provided with a circular arc-shaped transmission rod group A and a circular arc-shaped transmission rod group B, the circular arc-shaped transmission rod group A comprises four transmission rods A601 which are uniformly distributed and vertically arranged, the circular arc-shaped transmission rod group B comprises four transmission rods B603 which are uniformly distributed and vertically arranged, the distance from each transmission rod A601 to the center of the transmission shaft A61 is the same as the distance from each transmission rod B603 to the center of the transmission rod B63, the distance from two adjacent transmission rods A601 is the, the brush A7 is of a horizontally arranged disc-shaped structure, the middle part of the brush A7 is fixedly connected with the lower end of the transmission shaft C67, clamping grooves 35 are uniformly distributed in the top of the brush A7 along the circumferential direction, the clamping grooves 35 are strip-shaped clamping grooves and are arranged along the radial direction of the brush A7, push rods 73 capable of sliding along the clamping grooves 35 are installed in the clamping grooves 35 in a matched mode, a brush B71 is arranged at the outer end of each push rod 73, a vertically arranged driving rod 74 is arranged at the upper part of the inner end of each push rod, arc slotted holes with the same number as the clamping grooves 35 are uniformly distributed in the gear C65 along the circumferential direction of the gear C65, the distance from the inner end of each arc slotted hole to the center of the gear C389; the pressurizing water spraying component comprises an air cylinder 9 and an air storage tank 8 which are arranged on a positioning plate 33, a return spring A94 is arranged on a push rod of the air cylinder 9 in a matching way, a round collision block 95 is arranged at the end part of the push rod in a matching way, the round collision block 95 is contacted with teeth of a gear C65, the inner cavity of the air cylinder 9 is communicated with the inner cavity of the air storage tank 8 through an air inlet pipe 91, a one-way valve A93 is arranged on the air inlet pipe 91, a one-way valve B93 is also arranged on the air cylinder 9, a water bag 83 is arranged in the inner cavity of the air storage tank 8, a pressure release valve 81 communicated with the inner cavity of the air storage tank 8 is arranged at the outer side of the air storage tank 8, a liquid inlet pipe is connected onto the water bag 83, a valve switch 31 and a water cover 32 are arranged at the end part of the liquid inlet pipe, the inner cavity of the water bag 83, and the inner end of the triangular compression block 66 contacts with the teeth of the gear C65 and the outer end abuts against the water pipe 82.
In this embodiment, the bottom of the protective casing C3 is provided with a circular brush C72 adapted to the bottom.
In the present embodiment, the brush a7, the brush B71, and the brush C72 have bristles uniformly distributed on the bottom thereof.
In this embodiment, the top of the protective cover 2 is further provided with a handle 1 and a protective shell a 11.
In the present embodiment, the handle 1 is provided with the device switch 12, and the device switch 12 is in signal connection with the motor 41.
In this embodiment, an electronic flow meter 5 is further mounted on the water pipe 82, and the electronic flow meter 5 is in signal connection with the alarm 21 arranged on the protective cover 2.
In this embodiment, the air storage tank 8 is fixedly mounted on the positioning plate 33 by a fixing member 34.
The working principle and the using method of the invention are as follows:
1. the brush (brush A7, brush B71, brush C72) under the device is contacted with the surface of the object to be cleaned.
2. The power source 42 provides a voltage to open the valve switch 31, activate the device switch 12, and the motor 41 begins to operate.
3. The motor 41 drives the worm wheel 6 to rotate forwardly through the worm 4, the worm wheel 6 drives the gear A62 to rotate forwardly and the gear B64 to rotate reversely through the transmission shaft A61, the transmission rod A601 and the transmission rod B603 on the lower side of the gear are respectively driven to rotate forwardly and reversely, the transmission rod A601 and the transmission rod B603 are meshed with the gear C65, and therefore the gear C65 is driven to rotate in a reciprocating mode. The gear C65 is fixedly connected with the brush A7 (the back part of which is provided with a clamping groove 35) through a transmission shaft C67, so that the brush A7 also performs reciprocating rotation motion. The arc slotted hole on the gear C65 is connected with the driving rod 74, and the brush B71 realizes the rotary telescopic compound motion under the action of the clamping groove 35, the driving rod 74 and the push rod 73.
4. When the gear C65 rotates reciprocally, the gear teeth compress the circular bump 95, the check valve B93 closes when the circular bump 95 advances, the gas in the cylinder 9 is compressed, and the pressure increases. When the gas pressure in the gas cylinder 9 is higher than the gas pressure in the gas container 8, the check valve a92 is opened, and the gas cylinder 9 inflates the gas container 8 through the gas inlet pipe 91. After the gear teeth pass through the circular collision block 95, the circular collision block 95 is reset under the action of the reset spring A94, the check valve A92 is closed when the circular collision block 95 is reset, the check valve B93 is opened, and external air enters the air cylinder 9 to wait for the next compression, so that the cycle is repeated. The side of the gas storage tank 8 is provided with a pressure release valve 81, when the pressure in the gas storage tank 8 exceeds a set safety value, the pressure release valve 81 can automatically discharge redundant gas, and accidents are avoided.
5. When the gear C65 rotates in a reciprocating manner, the gear teeth compress the triangular compression block 66, the water pipe 82 stops water outlet under the action of the triangular compression block 66, after the gear teeth pass through the triangular compression block 66, the triangular compression block 66 resets under the action of the return spring B602, and the water pipe 82 continues to discharge water to form intermittent water spraying. The water pipe 82 is connected to the nozzle 75 via a drive shaft C67 (hollow inside). The water bag 83 is squeezed by the air storage tank 8 (the inner cavity is provided with the water bag 83) under the action of atmospheric pressure, water passes through the water pipe 82 and the transmission shaft C67 to reach the nozzle 75, and uniform diffusion spraying is realized under the action of the bottom conical surface of the brush A7, so that the water is completely sprayed on the surface of an object to be scrubbed.
6. The device is moved close to the surface to be scrubbed, so that the surface of the object is cleaned in quadruple. Namely: the washing of water, the reciprocating rotary scrubbing of a brush A7, the rotary telescopic compound motion scrubbing of a brush B71 and the horizontal push scrubbing of a brush C72. Meanwhile, the brush C72 can effectively avoid water splashing.
7. The water pipe 82 is provided with an electronic flow meter 5, and the electronic flow meter 5 measures the water storage capacity of the device. When the water amount is less than 10% of the volume of the water bag 83, the alarm 21 gives an alarm to remind the user to add water.
8. The device switch 12 is turned off, the motor 41 stops operating, and the valve switch 31 is closed.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features.
Claims (7)
1. A portable electric composite scrubbing device, characterized in that: comprises a protective shell, a driving component, a brush cleaning component and a pressurizing water spraying component;
the protection shell comprises a protection cover B (2), the protection cover B (2) is of a horizontally arranged disc-shaped structure, a cylindrical protection shell C (3) matched with the protection cover B is arranged on the outer side of the protection cover B, the protection cover B (2) is arranged in the upper end of the protection shell C (3), and a positioning plate (33) horizontally arranged is arranged in an inner cavity of the protection shell C (3);
the driving assembly comprises a transmission shaft A (61), the transmission shaft A (61) vertically penetrates through the protective cover B (2), the upper end and the lower end of the transmission shaft A (61) are respectively arranged at the upper side and the lower side of the protective cover B (2), a worm wheel (6) is installed at the upper end of the transmission shaft A (61), a gear A (62) is installed at the lower end of the transmission shaft A (61), a power supply (42) and a motor (41) are further arranged on the top of the protective cover B (2), a worm (4) is installed at the output end of the motor (41) in a matching mode, the worm (4) is connected with the worm wheel (6) in a matching mode, a gear B (64) meshed with the gear A (62) is arranged at the bottom of the protective cover B (2), and the gear B (64;
the brush cleaning assembly comprises a vertically arranged transmission shaft C (67), the transmission shaft C (67) is of a hollow cylindrical structure and penetrates through the positioning plate (33), the upper end and the lower end of the transmission shaft C (67) are respectively arranged at the upper side and the lower side of the positioning plate (33), a gear C (65) is rotatably connected to the upper end of the transmission shaft C (67), a brush A (7) is fixedly connected to the lower end of the transmission shaft C, a circular arc-shaped transmission rod group A and a circular arc-shaped transmission rod group B are respectively arranged at the bottoms of the gear A (62) and the gear B (64), the circular arc-shaped transmission rod group A comprises four transmission rods A (601) which are uniformly distributed and vertically arranged, the circular arc-shaped transmission rod group B comprises four transmission rods B (603) which are uniformly distributed and vertically arranged, the distance from each transmission rod A (601) to the center of the transmission shaft A (61, the distance between two adjacent transmission rods A (601) is the same as that between two adjacent transmission rods B (603), the transmission rods A (601) and the transmission rods B (603) are both matched with tooth grooves of the gear C (65) and can be meshed with the gear C (65), the brush A (7) is of a horizontally arranged disc-shaped structure, the middle part of the brush A is fixedly connected with the lower end of the transmission shaft C (67), clamping grooves (35) are uniformly distributed at the top of the brush A (7) along the circumferential direction, the clamping grooves (35) are strip-shaped clamping grooves and are arranged along the radial direction of the brush A (7), push rods (73) capable of sliding along the clamping grooves (35) are arranged in the clamping grooves (35) in a matching manner, the outer ends of the push rods (73) are provided with brush B (71), the upper parts of the inner ends of the push rods are provided with vertically arranged driving rods (74), and circular holes with the same number as the clamping grooves (35) are uniformly, the distance from the inner end of the arc slotted hole to the center of the gear C (65) is smaller than the distance from the outer end of the arc slotted hole to the center of the gear C (65), the arc slotted hole is matched with the driving rod (74), and the driving rod (74) is limited in the arc slotted hole;
the pressurizing water spraying assembly comprises an air cylinder (9) and an air storage tank (8) which are arranged on a positioning plate (33), a reset spring A (94) is installed on a push rod of the air cylinder (9) in a matched mode, a round collision block (95) is installed at the end portion of the push rod in a matched mode, the round collision block (95) is in tooth contact with a gear C (65), the inner cavity of the air cylinder (9) is communicated with the inner cavity of the air storage tank (8) through an air inlet pipe (91), a check valve A (92) is arranged on the air inlet pipe (91), a check valve B (93) is further arranged on the air cylinder (9), a water bag (83) is arranged in the inner cavity of the air storage tank (8), a pressure release valve (81) communicated with the inner cavity of the air storage tank (8) is arranged on the outer side of the air storage tank (8), a liquid inlet pipe is connected onto the water bag (83), a valve switch (31) and a water cover (32) are arranged at the, the lower extreme of transmission shaft C (67) is equipped with nozzle (75), still be equipped with triangle compression piece (66) on locating plate (33), reset spring B (602) are installed in the cooperation on triangle compression piece (66), and the inner of triangle compression piece (66) contacts with the tooth of gear C (65), and the outer end offsets with water pipe (82).
2. A portable electric multiple scrub device as set forth in claim 1 further comprising: the bottom of the protective shell C (3) is provided with a circular brush C (72) matched with the protective shell C.
3. A portable electric multiple scrub device as set forth in claim 2 wherein: the bottom of the brush A (7), the bottom of the brush B (71) and the bottom of the brush C (72) are all evenly distributed with bristles.
4. A portable electric multiple scrub device as set forth in claim 1 further comprising: the top of visor B (2) still is equipped with handle (1) and protective housing A (11).
5. A portable electric multiple scrub device according to claim 4, further comprising: the handle (1) is provided with a device switch (12), and the device switch (12) is in signal connection with the motor (41).
6. A portable electric multiple scrub device as set forth in claim 1 further comprising: still the cooperation is installed electron flowmeter table (5) on water pipe (82), electron flowmeter table (5) and alarm (21) signal connection who sets up on protecting cover B (2).
7. A portable electric multiple scrub device as set forth in claim 1 further comprising: the air storage tank (8) is fixedly arranged on the positioning plate (33) through a fixing piece (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021373683.2U CN212788401U (en) | 2020-07-14 | 2020-07-14 | Portable electric composite scrubbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021373683.2U CN212788401U (en) | 2020-07-14 | 2020-07-14 | Portable electric composite scrubbing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212788401U true CN212788401U (en) | 2021-03-26 |
Family
ID=75101638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021373683.2U Withdrawn - After Issue CN212788401U (en) | 2020-07-14 | 2020-07-14 | Portable electric composite scrubbing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212788401U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111904341A (en) * | 2020-07-14 | 2020-11-10 | 苏州市职业大学 | Portable electric composite scrubbing device |
-
2020
- 2020-07-14 CN CN202021373683.2U patent/CN212788401U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111904341A (en) * | 2020-07-14 | 2020-11-10 | 苏州市职业大学 | Portable electric composite scrubbing device |
| CN111904341B (en) * | 2020-07-14 | 2021-06-11 | 苏州市职业大学 | Portable electric composite scrubbing device |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20210326 Effective date of abandoning: 20210611 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20210326 Effective date of abandoning: 20210611 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |