CN210277080U - Hand-held type ceiling cleaning device - Google Patents
Hand-held type ceiling cleaning device Download PDFInfo
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- CN210277080U CN210277080U CN201920585797.4U CN201920585797U CN210277080U CN 210277080 U CN210277080 U CN 210277080U CN 201920585797 U CN201920585797 U CN 201920585797U CN 210277080 U CN210277080 U CN 210277080U
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- fixedly connected
- cover
- dust collection
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- dust
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Abstract
The utility model discloses a hand-held ceiling cleaning device, which comprises an adjusting telescopic rod and a mounting cover hinged at the top end of the adjusting telescopic rod, the top of the mounting cover is detachably provided with a dust collection cover which is concentric with the mounting cover and has an opening at the upper end, the top of the outer side surface of the dust collection cover is evenly and fixedly connected with at least two universal moving rollers along the circumferential direction, the center of the bottom of the inner cavity of the installation cover is fixedly connected with a vertically installed motor, the bottom of the inner cavity of the dust collection cover is fixedly connected with a protective sleeve, the output shaft of the motor penetrates through the inner cavity of the protective sleeve and is fixedly connected with a connecting rod, the diameters of the connecting rod and the output shaft of the motor are both smaller than the inner diameter of the protective sleeve, the top of the connecting rod extends out of the protective sleeve and is fixedly connected with a brush, the top of the universal moving roller is higher than the top of the dust collection cover, and the top of the brush is higher than the top of the universal moving roller. The device is simple in operation and convenient to clean, can keep the indoor working environment clean, and is high in cleaning efficiency.
Description
Technical Field
The utility model relates to a cleaning device technical field specifically is a hand-held type ceiling cleaning device.
Background
In the indoor design, the ceiling can be used for writing and drawing, painting beautifies the indoor environment, and is provided with a ceiling lamp, a light pipe, a ceiling fan, an air conditioner and the like, so that the effects of indoor illumination and air circulation are changed, the ceiling is relatively difficult to clean in daily life, and due to the high height, workers often need to ascend when cleaning, and use cleaning tools for cleaning.
But the clean mode of traditional ceiling, generally clean with the cleaning brush, moreover because traditional cleaning brush is a body structure, can not stretch out and draw back, and need the cleaning personnel to swing repeatedly and clean, waste time and energy, and the dust of clearance can drop on one's body ground and staff, the dust still can fly away everywhere, influence indoor operational environment, need the staff to clear up the dust on ground once more, so increased work load, improved working strength, still influenced cleaning efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a hand-held type ceiling cleaning device, the device easy operation, clearance convenience can also keep indoor operational environment's cleanness, clean efficient.
In order to achieve the above object, the utility model provides a following technical scheme: a hand-held ceiling cleaning device comprises an adjusting telescopic rod and an installation cover hinged at the top end of the adjusting telescopic rod and provided with an opening at the upper end, wherein the adjusting telescopic rod comprises a telescopic section at the lower part and a supporting section at the upper part, a cavity is arranged at the upper end of the telescopic section, the lower end of the supporting section extends into the cavity, a reset spring is connected between the lower end of the supporting section and the bottom of the cavity, a dust collection cover concentric with the installation cover and provided with an opening at the upper end is detachably installed at the top of the installation cover, at least two universal moving rollers are uniformly and fixedly connected at the top of the outer side surface of the dust collection cover along the circumferential direction of the dust collection cover, a vertically installed motor is fixedly connected at the center of the bottom of the inner cavity of the installation cover, a switch electrically connected with the motor is arranged at the lower half part of the adjusting telescopic rod, a protection sleeve, the diameter of the output shaft of the connecting rod and the motor is smaller than the inner diameter of the protective sleeve, the top of the connecting rod extends out of the protective sleeve and is fixedly connected with a hairbrush, the top of the universal moving roller is higher than the top of the dust collection cover, and the top of the hairbrush is higher than the top of the universal moving roller.
Preferably, the motor is fixedly connected with a fixed shell with an upper end opening, the bottom of the inner cavity of the fixed shell is in threaded connection with a threaded pin, the upper end of the threaded pin is located inside the fixed shell and fixedly connected with a first limiting block, and the lower end of the threaded pin extends out of the installation cover.
Preferably, the first limiting block is provided with a notch matched with the lower end of the L-shaped clamping block.
Preferably, the lower end of the threaded pin is fixedly connected with a handle.
Preferably, the top of the inner side wall of the installation cover is provided with a positioning shoulder I, and the bottom of the outer side wall of the dust collection cover is provided with a positioning shoulder II matched with the positioning shoulder I.
Preferably, the brush includes the fixing base, the top of fixing base has linked firmly the mounting panel, the top of mounting panel is provided with the brush hair, and the top of brush hair is higher than the top of universal removal gyro wheel, bolt assembly fixed connection is passed through with the top of connecting rod in the bottom of fixing base.
Preferably, the bottom of flexible section articulates there is the metal waist hoop, and the medial surface of waist hoop is provided with the rubber layer.
Preferably, a circle of PVC flexible protective cover is fixedly connected to the top edge of the dust collection cover, and the top of the PVC flexible protective cover is flush with or higher than the tops of the bristles.
Preferably, the inner wall of the dust collection cover is fixedly connected with a ring plate, an annular blanking channel is formed between the ring plate and the protection sleeve, and the upper end surface of the ring plate is an inclined surface inclined from outside to inside and from top to bottom.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the utility model drives the brush to rotate to clean the dust on the ceiling through the motor, and the user can push the rod body of the telescopic rod through hand-holding adjustment, so that the dust collection cover moves on the ceiling, and the dust is collected by the dust collection cover, thereby avoiding the indoor dust from floating around when cleaning the ceiling;
2. when the dust hood is used for cleaning, the upper end of the L-shaped fixture block can be inserted into the limiting socket under the action of the elastic force of the spring to lock the dust hood, and the dust hood and the mounting cover can not be separated during moving cleaning operation, so that the stability of the dust hood is ensured; after the cleaning operation is finished, when the handle drives the threaded pin 11 to drive the first limiting block to rotate, the lower end of the L-shaped clamping block can be smoothly separated from the opening, the locking of the dust hood is released, then the hairbrush is dismounted, the dust hood is separated from the mounting cover, the dust hood is conveniently dismounted to be cleaned, and the problem that the motor is easy to enter water when the dust hood is cleaned in an assembly state is solved;
3. the utility model discloses when cleaning the operation, block the waist hoop on operation personnel's waist, and the rubber layer can increase contact friction, prevents that the waist hoop from shifting, guarantees the support stability of waist hoop to adjusting the telescopic link, supports the lower extreme of adjusting the telescopic link through the waist hoop, then the operation personnel can assist the adjusting the telescopic link to grip with the hand, avoided the operation personnel to hold the easy tired problem of cleaning operation of whole cleaning device for a long time, both reduced operation personnel's intensity of labour, be favorable to improving the operating efficiency again;
4. when the utility model is used for cleaning, the PVC flexible protective cover can contact with the ceiling and seal the gap between the dust collecting cover and the ceiling, thereby preventing the dust from floating from the gap and further ensuring the cleanness of the operation environment;
5. in the utility model, the dust cleaned by the brush hair firstly falls to the ring plate, after the cleaning operation is completed, the whole cleaning device is firstly shaken to ensure that the dust on the ring plate slides downwards along the inclined plane as far as possible and falls to the bottom of the dust hood through the blanking channel, and then the whole cleaning device is put down, so that when the dust hood is in an inclined state in the putting down process, the dust can not spill out of the dust hood, and after the cleaning device is put, the dust hood is taken down and the dust in the dust hood is cleaned;
6. if the brush hair is seriously worn, the brush hair can be detached by detaching the bolt component and replaced by a new brush hair so as to ensure the cleaning capability of the brush hair;
7. the utility model discloses in use through the cooperation of location shoulder II and location shoulder I, can realize the convenient quick cartridge of installation cover and dust cage or separation to convenient dust to dust cage inside is handled, and installation cover and dust cage installation are accomplished the back, and location shoulder I and location shoulder II can be spacing at vertical direction and horizontal direction to installation cover and dust cage.
Therefore, compared with the prior art, the utility model has the substantive characteristics and the progress, and the beneficial effects of the implementation are also obvious.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of an assembled structure of the mounting cover and the dust collection cover;
FIG. 3 is an enlarged view of point A in FIG. 2;
fig. 4 is a schematic view of a threaded pin.
In the figure: 1. adjusting the telescopic rod; 2. mounting a cover; 3. a dust collection cover; 4. a universal moving roller; 5. a motor; 6. a protective sleeve; 7. a connecting rod; 8. an output shaft; 9. a brush; 10. a stationary case; 11. a threaded pin; 12. fixing the cross bar; 13. a second limiting block; 14. an L-shaped fixture block; 15. a spring; 16. a positioning shoulder I; 17. a positioning shoulder II; 18. a switch; 19. a ring plate; 20. a PVC flexible protective cover; 21. a waist hoop; 22. a telescopic section; 23. a return spring; 24. a cavity; 25. a support section; 91. a fixed seat; 92. mounting a plate; 93. brushing; 112. a first stopper; 113. a handle; 114. and (6) opening.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a hand-held type ceiling cleaning device, as shown in the figure, it is including adjusting telescopic link 1 and articulating at 1 top of adjusting telescopic link and upper end open-ended installation cover 2, it includes the flexible section 22 of position under and the support section 25 of position at last to adjust telescopic link 1, the upper end of flexible section 22 is provided with cavity 24, support section 25's lower extreme stretches into in cavity 24, and is connected with reset spring 23 between the lower extreme of support section 25 and the bottom of cavity 24. After adopting this kind of structural style, under the effect of reset spring 23, each universal removal gyro wheel 4 can contact the ceiling all the time, can not break away from the contact with the ceiling to the clean effect of brush 9 and the sealed guard action of the flexible protection casing 20 of PVC have been guaranteed. The bottom end of the telescopic section 22 is hinged with a metal waist hoop 21, and the inner side surface of the waist hoop 21 is provided with a rubber layer. During cleaning operation, with waist hoop 21 card on operation personnel's waist, and the rubber layer can increase contact friction, prevent that waist hoop 21 from shifting, guarantee waist hoop 21 to the support stability of adjusting telescopic link 1, support the lower extreme of adjusting telescopic link 1 through waist hoop 21, the upper end of adjusting telescopic link 1 supports on the ceiling, then operation personnel can assist with hand to adjust telescopic link 1 and grip can, avoided operation personnel to lift whole cleaning device for a long time and carry out the easy tired problem of cleaning operation, operation personnel's intensity of labour has both been reduced, be favorable to improving the operating efficiency again.
The top demountable installation of installing cover 2 has rather than concentric and upper end open-ended dust cage 3, location shoulder I16 has been seted up at the top of installing cover 2 inside wall, the location shoulder II 17 with location shoulder I16 looks adaptation is seted up to the bottom of dust cage 3 lateral wall, and the cooperation of location shoulder I16 and location shoulder II 17 can realize the convenient quick cartridge or the separation of installing cover 2 and dust cage 3 to conveniently handle the inside dust of dust cage 3, after installing cover 2 and dust cage 3 installation, location shoulder I16 and location shoulder II 17 can carry on spacingly in vertical direction and horizontal direction to installing cover 2 and dust cage 3. The dust collection cover 3 and the installation cover 2 and the protection sleeve 6 are arranged in such a way that a large amount of dust and/or other foreign matters can be prevented from entering the installation cover 2 to influence the normal operation of the motor 5 during cleaning operation.
The top of the outer side surface of the dust collection cover 3 is evenly fixedly connected with at least two universal moving rollers 4 along the circumferential direction, when cleaning operation is carried out, the universal moving rollers 4 can stably support the whole cleaning device on the ceiling, and on the other hand, the whole cleaning device can be conveniently moved on the ceiling. The utility model discloses a dust collection cover, including installation cover 2, motor 5, regulation telescopic link 1, the lower half of regulation telescopic link is provided with the switch 18 of being connected with motor 5 electricity, the bottom fixedly connected with protective sleeve 6 of dust collection cover 3 inner chambers, the output shaft 8 of motor 5 runs through to the inner chamber of protective sleeve 6 and fixedly connected with connecting rod 7, the diameter of the output shaft 8 of connecting rod 7 and motor 5 all is less than protective sleeve 6's internal diameter to guarantee that protective sleeve 6 can not produce with connecting rod 7 and motor 5's output shaft 8 and interfere. The top of connecting rod 7 stretches out protective sleeve 6 and fixedly connected with brush 9, and the top of universal removal gyro wheel 4 is higher than the top of dust cage 3, and the top of brush 9 is higher than the top of universal removal gyro wheel 4 to when guaranteeing cleaning operation, brush 9 and universal removal gyro wheel 4 contact ceiling and dust cage 3 can not contact the ceiling. Particularly, brush 9 includes fixing base 91, the top of fixing base 91 has linked firmly mounting panel 92, the top of mounting panel 92 is provided with brush hair 93, and the top of brush hair 93 is higher than the top of universal removal gyro wheel 4, bolt assembly fixed connection is passed through with the top of connecting rod 7 in the bottom of fixing base 91. During cleaning operation, the output shaft 8 of the motor 5 drives the brush 9 to rotate through the connecting rod 7, and the ceiling is cleaned through the rotation of the brush 9. If the brush staples 93 are worn seriously, the brush 9 can be detached by detaching the bolt assembly and replaced by a new brush 9, so as to ensure the cleaning capability of the brush 9.
The top edge of the dust collection cover 3 is fixedly connected with a circle of PVC flexible protection cover 20, and the top of the PVC flexible protection cover 20 is flush with the top of the brush hair 93 or higher than the top of the brush hair 93. This structure can ensure that the PVC flexible protective cover 20 can contact with the ceiling and seal the gap between the dust collecting cover 3 and the ceiling during cleaning operation, thereby preventing the dust from floating from the gap and further ensuring the cleanness of the operation environment.
The inner wall of the dust collection cover 3 is fixedly connected with a ring plate 19, an annular blanking channel is formed between the ring plate 19 and the protection sleeve 6, and the upper end face of the ring plate 19 is an inclined plane which inclines from outside to inside and from top to bottom. After the structure is adopted, the dust swept by the bristles 93 firstly falls to the ring plate 19, after cleaning operation is completed, the whole cleaning device is shaken firstly, so that the dust on the ring plate 19 slides downwards along the inclined plane as far as possible and falls to the bottom of the dust collection cover 3 through the blanking channel, then the whole cleaning device is put down, therefore, when the dust collection cover 3 is in an inclined state in the putting down process, the dust cannot spill out of the dust collection cover 3, and after the cleaning device is put, the dust collection cover 3 is taken down and the dust in the dust collection cover 3 is cleaned.
Fixedly connected with upper end open-ended set casing 10 on the motor 5, the bottom threaded connection of set casing 10 inner chamber has threaded pin 11, and threaded pin 11's upper end is located set casing 10 inside and has linked firmly first stopper 112, lower extreme and stretch out installation cover 2, be provided with on the installation cover 2 with threaded pin 11 clearance fit's through-hole to can not produce with installation cover 2 when guaranteeing that threaded pin 11 rotates and interfere, threaded pin 11's lower extreme has linked firmly handle 113. The inner cavity of the fixed shell 10 is fixedly connected with a fixed cross rod 12, an L-shaped fixture block 14 matched with a first limiting block 112 is slidably sleeved on the fixed cross rod 12, an opening 114 matched with the lower end of the L-shaped fixture block 14 is formed in the first limiting block 112, two side faces of the opening 114 are slope faces, when the handle 113 drives the threaded pin 11 to drive the first limiting block 112 to rotate, the lower end of the L-shaped fixture block 14 can be smoothly separated from the opening 114, locking of the dust hood 3 is released, then the brush 9 is detached, the dust hood 3 is separated from the installation hood 2, the dust hood 3 is conveniently detached for cleaning, and the problem that the motor 5 is easy to enter water when the dust hood 3 is cleaned in an assembly state is solved. The bottom of the dust collection cover 3 is fixedly connected with a second limiting block 13, a limiting socket matched with the L-shaped clamping block 14 is arranged on the second limiting block 13, and a spring 15 positioned between the L-shaped clamping block 14 and the inner side wall of the fixed shell 10 is sleeved on one side, far away from the second limiting block 13, of the fixed cross bar 12. Under the action of the elastic force of the spring 15, the upper end of the L-shaped fixture block 14 can be inserted into the limiting socket to lock the dust hood 3, and when the dust hood 3 and the mounting cover 2 are moved for cleaning, the dust hood 3 cannot be separated, so that the stability of the dust hood 3 is ensured.
The operation process of the cleaning device comprises the following steps: fix waist hoop 21 on operation personnel's waist earlier, then adjust the length of adjusting flexible section 22 in telescopic link 1, make the universal removal gyro wheel 4 and the ceiling contact of dust cage 3 both sides, because the upper and lower both ends of adjusting telescopic link 1 are articulated with installation cover 2 and waist hoop 21 respectively, so, during cleaning operation, need not make and adjust telescopic link 1 and be in upright state, adjust telescopic link 1 and be in the tilt state, make dust cage 3 be in operation personnel's oblique top, so both make things convenient for operation personnel to observe, can not be too tired again. Then open motor 5 through switch 18, motor 5's output shaft 8 passes through connecting rod 7 and drives brush 9 and rotate, clear up the dust on the ceiling through brush 9, user's universal removal gyro wheel 4 of accessible is along the convenient whole cleaning device of removal in ceiling, during the clearance operation, dust cage 3 concentrates the collection to the dust, and the flexible protection casing 20 of PVC can contact with the ceiling and seal up the gap between dust cage 3 and the ceiling, avoided the dust to waft on indoor and operation personnel's clothes, the cleanliness factor of operation process has been guaranteed, operation personnel's intensity of labour has also been reduced, and the operating efficiency is improved.
The utility model discloses in top, bottom, upper end, lower extreme all are when based on clean operation, whole cleaning device's user state.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A hand-held ceiling cleaning apparatus, characterized by: comprises an adjusting telescopic rod (1) and an installing cover (2) hinged on the top end of the adjusting telescopic rod (1) and provided with an opening at the upper end, wherein the adjusting telescopic rod (1) comprises a telescopic section (22) arranged below and a supporting section (25) arranged above, a cavity (24) is arranged at the upper end of the telescopic section (22), the lower end of the supporting section (25) extends into the cavity (24), a reset spring (23) is connected between the lower end of the supporting section (25) and the bottom of the cavity (24), a dust collection cover (3) concentric with the installing cover and provided with an opening at the upper end is detachably installed at the top of the installing cover (2), at least two universal moving rollers (4) are uniformly and fixedly connected with the top of the outer side surface of the dust collection cover (3) along the circumferential direction of the dust collection cover, a vertically installed motor (5) is fixedly connected at the center of the bottom of the inner cavity of the installing cover (2), a switch (18), the bottom fixedly connected with protective sleeve (6) of dust cage (3) inner chamber, output shaft (8) of motor (5) run through to the inner chamber and the fixedly connected with connecting rod (7) of protective sleeve (6), the diameter of output shaft (8) of connecting rod (7) and motor (5) all is less than the internal diameter of protective sleeve (6), protective sleeve (6) and fixedly connected with brush (9) are stretched out at the top of connecting rod (7), and the top of universal removal gyro wheel (4) is higher than the top of dust cage (3), and the top of brush (9) is higher than the top of universal removal gyro wheel (4).
2. A hand-held ceiling cleaning apparatus according to claim 1, wherein: the motor (5) is fixedly connected with a fixed shell (10) with an opening at the upper end, the bottom of the inner cavity of the fixed shell (10) is in threaded connection with a threaded pin (11), the upper end of the threaded pin (11) is positioned in the fixed shell (10) and fixedly connected with a first limiting block (112), and the lower end of the threaded pin extends out of the mounting cover (2), the inner cavity of the fixed shell (10) is fixedly connected with a fixed cross bar (12), an L-shaped clamping block (14) matched with a first limiting block (112) is slidably sleeved on the fixed cross bar (12), the bottom of the dust collection cover (3) is fixedly connected with a second limiting block (13), a limiting socket matched with the L-shaped clamping block (14) is arranged on the second limiting block (13), and a spring (15) positioned between the L-shaped clamping block (14) and the inner side wall of the fixed shell (10) is sleeved on one side of the fixed cross rod (12) far away from the second limiting block (13).
3. A hand-held ceiling cleaning apparatus according to claim 2, wherein: and a notch (114) matched with the lower end of the L-shaped fixture block (14) is formed in the first limiting block (112).
4. A hand-held ceiling cleaning apparatus according to claim 3, wherein: the lower end of the threaded pin (11) is fixedly connected with a handle (113).
5. A hand-held ceiling cleaning apparatus according to claim 4, wherein: the top of the inner side wall of the mounting cover (2) is provided with a positioning shoulder I (16), and the bottom of the outer side wall of the dust collection cover (3) is provided with a positioning shoulder II (17) matched with the positioning shoulder I (16).
6. A hand-held ceiling cleaning apparatus according to claim 5, wherein: brush (9) are including fixing base (91), mounting panel (92) have been linked firmly at the top of fixing base (91), the top of mounting panel (92) is provided with brush hair (93), and the top of brush hair (93) is higher than the top of universal removal gyro wheel (4), bolt assembly fixed connection is passed through with the top of connecting rod (7) in the bottom of fixing base (91).
7. A hand-held ceiling cleaning apparatus according to claim 6, wherein: the bottom end of the telescopic section (22) is hinged with a metal waist hoop (21), and the inner side surface of the waist hoop (21) is provided with a rubber layer.
8. A hand-held ceiling cleaning apparatus according to claim 7, wherein: the top edge of the dust collection cover (3) is fixedly connected with a circle of PVC flexible protection cover (20), and the top of the PVC flexible protection cover (20) is flush with the top of the bristles (93) or higher than the top of the bristles (93).
9. A hand-held ceiling cleaning apparatus according to claim 8, wherein: the inner wall of the dust collection cover (3) is fixedly connected with a ring plate (19), an annular blanking channel is formed between the ring plate (19) and the protection sleeve (6), and the upper end face of the ring plate (19) is an inclined plane which inclines from outside to inside and from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920585797.4U CN210277080U (en) | 2019-04-26 | 2019-04-26 | Hand-held type ceiling cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920585797.4U CN210277080U (en) | 2019-04-26 | 2019-04-26 | Hand-held type ceiling cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210277080U true CN210277080U (en) | 2020-04-10 |
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ID=70068190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920585797.4U Expired - Fee Related CN210277080U (en) | 2019-04-26 | 2019-04-26 | Hand-held type ceiling cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210277080U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109864673A (en) * | 2019-04-26 | 2019-06-11 | 王宏英 | A kind of hand-held smallpox board cleaning device |
-
2019
- 2019-04-26 CN CN201920585797.4U patent/CN210277080U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109864673A (en) * | 2019-04-26 | 2019-06-11 | 王宏英 | A kind of hand-held smallpox board cleaning device |
| CN109864673B (en) * | 2019-04-26 | 2023-11-03 | 江苏康程新材料科技有限公司 | Hand-held type ceiling cleaning device |
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Granted publication date: 20200410 |