CN116619309B - Lithium electric drill with dust removal function - Google Patents
Lithium electric drill with dust removal function Download PDFInfo
- Publication number
- CN116619309B CN116619309B CN202310776428.4A CN202310776428A CN116619309B CN 116619309 B CN116619309 B CN 116619309B CN 202310776428 A CN202310776428 A CN 202310776428A CN 116619309 B CN116619309 B CN 116619309B
- Authority
- CN
- China
- Prior art keywords
- dust
- impeller
- shell
- dust collection
- fixedly arranged
- 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.)
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Links
- 239000000428 dust Substances 0.000 title claims abstract description 115
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 12
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 238000000926 separation method Methods 0.000 claims description 18
- 238000005553 drilling Methods 0.000 claims description 17
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 description 9
- 238000005498 polishing Methods 0.000 description 5
- 238000007517 polishing process Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/02—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by electric power
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention discloses a lithium electric drill with a dust removing function, which relates to the technical field of electric tools and comprises two shells which are mutually buckled, wherein a lithium battery is arranged at the handle position of the shell, a driving motor and a planetary reversing gearbox are fixedly arranged in the shell, an input shaft of the planetary reversing gearbox is fixedly connected with an output shaft of the driving motor, and a dust removing assembly is further arranged in the shell. The retractable movable dust collection pipe is arranged, so that dust generated in the processing process can be completely collected, and the dust is prevented from being sucked into a body by an operator; the dust removal assembly can reduce the blocking effect of the filter screen on air, and improve the adsorption force of the movable dust collection pipe, so that the dust removal effect is improved; the electric drill has the advantages that the positive and negative rotation of the electric drill can play a role in dust collection, and the leakage of dust in the operation process is further reduced.
Description
Technical Field
The invention relates to the technical field of electric tools, in particular to a lithium electric drill with a dust removal function.
Background
The electric drill is a drilling machine using electricity as power. Is a conventional product in electric tools and is also a product of the electric tools with the largest demand. The electric drill needs to be matched with a proper drill bit for use, or matched with a polishing head for polishing parts, and in order to prevent dust generated in the drilling or polishing process from being sucked into the lung by a human body, the electric drill often needs to be matched with a dust collector for use.
In order to solve the above technical problems, the invention patent with publication number CN111774608B provides an electric drill with dust removing function, but the dust removing mechanism of the electric drill cannot collect dust generated in the drilling or polishing process completely, and the electric drill can only act when the drill bit or polishing wheel rotates forward or backward, and cannot achieve the effect of dust collection when rotating forward or backward.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the following technical scheme: the utility model provides a lithium electric drill with dust removal function, includes the shell that two mutual locks set up, and the handle position of shell is provided with the lithium cell, and the inside of shell still fixedly mounted has driving motor and planet switching-over gearbox, and the input shaft and the output shaft fixed connection of driving motor of planet switching-over gearbox, still be provided with dust removal subassembly in the shell, dust removal subassembly includes the separator housing, and fixed mounting has the connection flow-through chamber on the separator housing, and it has the reverse gearbox to connect the flow-through chamber through reverse gearbox sleeve fixed mounting, and the input shaft and the output shaft fixed connection of planet switching-over gearbox of reverse gearbox, the input shaft of reverse gearbox still fixed mounting has first impeller, still fixed mounting has the middle spliced pole that is used for supporting first impeller on the separator housing, fixed mounting has the separator housing on the separator housing, and the inboard of separator housing is provided with at least nine separation rotary blades, be provided with the dust exhaust mouth on the separator housing, the one end of dust exhaust mouth is connected with the filter chamber through the hose, has the toper dog support fixed mounting in the filter chamber through three toper dog, and the outside of toper dog is provided with nine filtration spiral guide bars, and filtration spiral guide bar is fixed mounting has on the filter screen on the filter tube fixed mounting filter screen.
Preferably, an electronic speed regulator for controlling the rotation speed of the output shaft of the driving motor is further arranged in the shell.
Preferably, an adjusting cylinder is rotatably arranged on the shell and is in rotary fit with the connecting flow-through chamber, and a second impeller is rotatably arranged on the adjusting cylinder and is fixed with an output shaft of the reversing gearbox.
Preferably, a ratchet wheel assembly is arranged between the second impeller and the output shaft of the reversing gearbox, and is used for enabling the second impeller to support unidirectional rotation.
Preferably, a dust suction rotary cylinder is fixedly arranged on the output shaft of the reversing gearbox, a dust suction opening is formed in the dust suction rotary cylinder, and a drilling tool installer for clamping a drilling tool is further arranged on the dust suction rotary cylinder.
Preferably, a ratchet assembly is arranged between the first impeller and the input shaft of the reversing gearbox, and is used for enabling the first impeller to rotate unidirectionally.
Preferably, the filter screen is sleeved with a filter screen support, and a magnetic attraction block which is in magnetic attraction fit with the filter screen support is fixedly arranged on the outer surface of one of the shells.
Preferably, the magnetic suction hood is fixedly arranged on the magnetic suction hood, the movable dust suction pipe is sleeved on the fixed dust suction pipe in a sliding manner, and a spring encircling the surface of the fixed dust suction pipe is arranged between the movable dust suction pipe and the magnetic suction hood.
Compared with the prior art, the invention has the following beneficial effects: (1) The retractable movable dust collection pipe is arranged, so that dust generated in the processing process can be completely collected, and the dust is prevented from being sucked into a body by an operator; (2) The dust removing component provided by the invention can reduce the blocking effect of the filter screen on air, and promote the adsorption force of the movable dust collecting pipe, thereby promoting the dust removing effect; (3) The invention realizes that the electric drill can play a role in dust collection in forward and reverse rotation, and further reduces the leakage of dust in the operation process.
Drawings
Fig. 1 is a schematic view of the structure of the housing of the present invention.
Fig. 2 is a schematic view of the internal structure of the housing of the present invention.
Fig. 3 is a schematic structural view of the magnetic suction hood of the present invention.
Fig. 4 is a view of the second impeller mounting location of the present invention.
FIG. 5 is a schematic view of the structure of the junction flow cell of the present invention.
FIG. 6 is a view of the mounting position of the magnetic attraction block of the invention.
FIG. 7 is a schematic view of the structure of the separating rotary blade of the present invention.
FIG. 8 is a schematic view of a filter screen according to the present invention.
Fig. 9 is a cross-sectional view of the conical stopper of the present invention.
Fig. 10 is an exploded view of the first impeller of the present invention.
FIG. 11 is a schematic view of a ratchet assembly according to the present invention.
In the figure: 101-a housing; 102-driving a motor; 103-a planetary reversing gearbox; 104-an electronic governor; a 105-lithium battery; 201-separating the shell; 2011-a dust discharge port; 202-a separation chamber; 203-separating the radial plates; 204-a first impeller; 205-connect flow-through chamber; 2051-reversing a gearbox sleeve; 206-adjusting the cylinder; 207-reverse gearbox; 208-an intermediate separation column; 209-hose; 210-a conical block holder; 211-conical stops; 212-filtering spiral guide strips; 213-a filter screen; 214-a filter tube; 215-a filter tube holder; 216-a filter screen bracket; 217-magnetic attraction blocks; 218-a filter chamber; 219-a second impeller; 220-dust collection rotary cylinder; 2201-dust collection port; 221-a drilling tool installer; 222-magnetic suction hood; 223-spring; 224-movable dust suction pipe; 225-fixing the dust suction pipe.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1-11, the invention provides a lithium electric drill with dust removing function, which comprises two shells 101 mutually buckled, a lithium battery 105 is arranged at the handle position of the shells 101, a driving motor 102 and a planetary reversing gearbox 103 are fixedly arranged in the shells 101, an input shaft of the planetary reversing gearbox 103 is fixedly connected with an output shaft of the driving motor 102, a dust removing component is further arranged in the shells 101, an electronic speed regulator 104 for controlling the rotation speed of the output shaft of the driving motor 102 is further arranged in the shells 101, the dust removing component comprises a separation shell 201, a connection circulation chamber 205 is fixedly arranged on the separation shell 201, a reversing gearbox 207 is fixedly arranged on the connection circulation chamber 205 through a reversing gearbox sleeve 2051, the input shaft of the reversing gearbox 207 is fixedly connected with the output shaft of the planetary reversing gearbox 103, a first impeller 204 is fixedly arranged on the input shaft of the reversing gearbox 207, the separating shell 201 is also fixedly provided with a middle separating column 208 for supporting the first impeller 204, the separating shell 201 is fixedly provided with a separating chamber 202, the inner side of the separating chamber 202 is provided with at least nine separating rotary blades 203, the separating shell 201 is provided with a dust discharge port 2011, one end of the dust discharge port 2011 is connected with a filtering chamber 218 through a hose 209, the filtering chamber 218 is internally and fixedly provided with a conical baffle 211 through three conical baffle brackets 210, the outer side of the conical baffle 211 is provided with at least nine filtering spiral guide strips 212, the filtering spiral guide strips 212 are fixedly arranged on the inner wall of the filtering chamber 218, the filtering chamber 218 is also fixedly provided with a filter screen 213, one end of the filter screen 213 is fixedly provided with a filter tube bracket 215, the middle part of the filter tube bracket 215 is fixedly provided with a filter tube 214, the shell 101 is rotatably provided with an adjusting cylinder 206, the adjusting cylinder 206 is in running fit with the connecting circulation chamber 205, the adjusting cylinder 206 is rotatably provided with a second impeller 219, the second impeller 219 is fixed with the output shaft of the reverse gearbox 207, and a ratchet assembly is arranged between the second impeller 219 and the output shaft of the reverse gearbox 207, so that the second impeller 219 supports unidirectional rotation. The output shaft of the reversing gearbox 207 is fixedly provided with a dust-absorbing rotary cylinder 220, a dust-absorbing opening 2201 is formed in the dust-absorbing rotary cylinder 220, and a drilling tool installer 221 for clamping a drilling tool is further arranged on the dust-absorbing rotary cylinder 220. A ratchet assembly is provided between the first impeller 204 and the input shaft of the reverse gearbox 207 for unidirectional rotation of the first impeller 204. The filter screen 213 is sleeved with a filter screen bracket 216, and a magnetic attraction block 217 which is magnetically attracted and matched with the filter screen bracket 216 is fixedly arranged on the outer surface of one of the shells 101. The dust suction rotary cylinder 220 is also provided with a magnetic suction dust hood 222 in a magnetic suction manner, a fixed dust suction pipe 225 is fixedly arranged on the magnetic suction dust hood 222, a movable dust suction pipe 224 is sleeved on the fixed dust suction pipe 225 in a sliding manner, and a spring 223 encircling the surface of the fixed dust suction pipe 225 is arranged between the movable dust suction pipe 224 and the magnetic suction dust hood 222.
Before using, the required drilling tool is installed through the drilling tool installer 221, and whether the magnetic suction hood 222, the spring 223, the movable dust suction pipe 224 and the fixed dust suction pipe 225 are installed or not is selected according to actual conditions (the dust suction effect is improved is installed), if the drilling tool is used for polishing, the shape of one end of the movable dust suction pipe 224 needs to be replaced at the moment, the polished tool is buckled, and dust is prevented from overflowing.
The rotation of the driving motor 102 can be controlled by pressing the electronic speed regulator 104, the driving motor 102 rotates to drive the input shaft of the planetary reversing gearbox 103 to rotate, the output shaft of the planetary reversing gearbox 103 drives the input shaft of the reversing gearbox 207 to rotate, and the output shaft of the reversing gearbox 207 drives the dust suction rotary drum 220 to rotate, so that the drilling tool is driven to rotate by the drilling tool installer 221.
When a workpiece is processed by a drilling tool or a polishing tool, dust is generated, and enters the magnetic suction hood 222 through the movable dust suction pipe 224 and the fixed dust suction pipe 225 (an air inlet is arranged on the movable dust suction pipe 224) and then enters the inside of the dust suction barrel 220 through the dust suction port 2201, because the output shaft of the planetary reversing gearbox 103 drives the first impeller 204 or the second impeller 219 to rotate (the first impeller 204 and the second impeller 219 are oppositely arranged, and a ratchet wheel component arranged between the input shaft and the output shaft of the reversing gearbox 207 is also opposite, when the output shaft of the planetary reversing gearbox 103 rotates forward or backward, only one of the first impeller 204 and the second impeller 219 rotates, and the ratchet wheel component in the other impeller is in slipping, the output shaft of the planetary reversing gearbox 103 is used for enabling one of the first impeller 204 and the second impeller 219 to drive air to enter from the dust collection port 2201, air enters into the movable dust collection pipe 224 from the air inlet arranged on the movable dust collection pipe 224, then drives dust to enter into the dust collection rotary drum 220 through the dust collection port 2201, then the dust moves into the separation chamber 202, at the moment, the dust rotates under the action of the separation rotary blade 203, then the inner wall edge of the separation chamber 202 rotates spirally, at the moment, the dust is discharged through the dust discharge port 2011 (the dust discharge port 2011 is arranged on the separation shell 201 tangentially, so that the dust is discharged), the dust enters into the filter chamber 218 through the hose 209, at the moment, the arranged conical stop 211 disperses the dust to the edge of the filter chamber 218, so that the dust rotates spirally around the filter spiral guide strip 212, and the rotating dust and the air are separated, the separated dust can flow into the filter screen 213, and the air can be discharged through the filter tube 214, the air mixed with the dust can be discharged through the filter screen 213, and the dust is filtered in the filter screen 213, so that the flow of the air filtered by the filter screen 213 can be reduced, the blocking effect of the filter screen 213 on the air is reduced, the adsorption force of the dust collection opening 2201 is increased, and the dust collection effect is improved.
With the depth of sanding or drilling, the movable dust suction pipe 224 slides over the fixed dust suction pipe 225 while the spring 223 is in a compressed state. In order to facilitate construction operation, the magnetic suction hood 222, the movable suction pipe 224 and the fixed suction pipe 225 may be made of acrylic transparent material, and at this time, the magnetic suction hood 222 needs to be provided with a patch capable of magnetically sucking with the dust suction rotary cylinder 220.
Claims (1)
1. The utility model provides a lithium electric drill with dust removal function, includes shell (101) that two mutual locks set up, and the handle position of shell (101) is provided with lithium cell (105), and the inside of shell (101) still fixed mounting has driving motor (102) and planet switching-over gearbox (103), the input shaft of planet switching-over gearbox (103) and the output shaft fixed connection of driving motor (102), its characterized in that: the dust removal assembly is further arranged in the shell (101), the dust removal assembly comprises a separation shell (201), a connection circulation chamber (205) is fixedly arranged on the separation shell (201), a reversing gearbox (207) is fixedly arranged on the connection circulation chamber (205) through a reversing gearbox sleeve (2051), an input shaft of the reversing gearbox (207) is fixedly connected with an output shaft of the planetary reversing gearbox (103), a first impeller (204) is fixedly arranged on the input shaft of the reversing gearbox (207), an intermediate separation column (208) for supporting the first impeller (204) is fixedly arranged on the separation shell (201), a separation chamber (202) is fixedly arranged on the separation shell (201), at least nine separation rotary blades (203) are arranged on the inner side of the separation chamber (202), a dust exhaust port (2011) is arranged on the separation shell (201), one end of the dust exhaust port (2011) is connected with a filter chamber (218) through a hose (209), a conical stop (211) is fixedly arranged in the filter chamber (218) through three conical stop supports (210), at least nine spiral guide strips (212) are arranged on the outer sides of the conical stop supports (211), at least one spiral guide strips (212) are fixedly arranged on the filter chamber (218), a filter tube bracket (215) is fixedly arranged at one end of the filter screen (213), and a filter tube (214) is fixedly arranged in the middle of the filter tube bracket (215);
An electronic speed regulator (104) for controlling the rotation speed of the output shaft of the driving motor (102) is also arranged in the shell (101); an adjusting cylinder (206) is rotatably arranged on the shell (101), the adjusting cylinder (206) is in rotary fit with the connecting circulation chamber (205), a second impeller (219) is rotatably arranged on the adjusting cylinder (206), and the second impeller (219) is fixed with an output shaft of the reversing gearbox (207); a ratchet wheel assembly is arranged between the second impeller (219) and an output shaft of the reversing gearbox (207) and is used for enabling the second impeller (219) to support unidirectional rotation; a dust suction rotary cylinder (220) is fixedly arranged on an output shaft of the reversing gearbox (207), a dust suction port (2201) is formed in the dust suction rotary cylinder (220), and a drilling tool installer (221) for clamping a drilling tool is further arranged on the dust suction rotary cylinder (220); a ratchet wheel assembly is arranged between the first impeller (204) and an input shaft of the reversing gearbox (207) and is used for enabling the first impeller (204) to rotate unidirectionally; the filter screen (213) is sleeved with a filter screen bracket (216), and a magnetic attraction block (217) which is in magnetic attraction fit with the filter screen bracket (216) is fixedly arranged on the outer surface of one shell (101); the novel dust collection device is characterized in that a magnetic dust collection cover (222) is further buckled on the dust collection rotary cylinder (220) in a magnetic manner, a fixed dust collection pipe (225) is fixedly arranged on the magnetic dust collection cover (222), a movable dust collection pipe (224) is sleeved on the fixed dust collection pipe (225) in a sliding manner, a spring (223) encircling the surface of the fixed dust collection pipe (225) is arranged between the movable dust collection pipe (224) and the magnetic dust collection cover (222), the first impeller (204) and the second impeller (219) are oppositely arranged, a ratchet wheel assembly arranged between the input shaft and the output shaft of the reverse gearbox (207) is also opposite, and one of the first impeller (204) and the second impeller (219) can drive air to enter from a dust collection port (2201) no matter whether the output shaft of the planetary reversing gearbox (103) rotates positively or reversely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310776428.4A CN116619309B (en) | 2023-06-28 | 2023-06-28 | Lithium electric drill with dust removal function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310776428.4A CN116619309B (en) | 2023-06-28 | 2023-06-28 | Lithium electric drill with dust removal function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116619309A CN116619309A (en) | 2023-08-22 |
| CN116619309B true CN116619309B (en) | 2024-06-18 |
Family
ID=87592237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310776428.4A Active CN116619309B (en) | 2023-06-28 | 2023-06-28 | Lithium electric drill with dust removal function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116619309B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117863048B (en) * | 2024-03-13 | 2024-05-17 | 常州市明锐工具有限公司 | Combined milling cutter with adjusting component |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007061977A (en) * | 2005-09-01 | 2007-03-15 | Makita Corp | Dust collector for power tool |
| JP2011251374A (en) * | 2010-06-02 | 2011-12-15 | Chugoku Electric Power Co Inc:The | Power tool |
| CN208358725U (en) * | 2018-06-29 | 2019-01-11 | 王晶 | A kind of electric drill with dust-absorbing function |
| CN114669139A (en) * | 2022-05-25 | 2022-06-28 | 宝嘉智能科技(南通)有限公司 | Self-cleaning air exchange device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010076035A (en) * | 2008-09-25 | 2010-04-08 | Makita Corp | Power tool with dust sucking function and dust sucking device for the power tool |
| JP2018089717A (en) * | 2016-11-30 | 2018-06-14 | 日立工機株式会社 | Electric tool |
| JP7007848B2 (en) * | 2017-09-28 | 2022-01-25 | 株式会社マキタ | Dust collector |
| CN108480718A (en) * | 2018-06-06 | 2018-09-04 | 大连理工高邮研究院有限公司 | A kind of electric drill of axial flow wind dedusting |
| CN110802486A (en) * | 2018-08-06 | 2020-02-18 | 苏州宝时得电动工具有限公司 | Sanding machine |
| CN113153287B (en) * | 2021-04-21 | 2023-10-24 | 永城煤电控股集团有限公司 | Novel coal mine tunneling hydraulic rock drill |
-
2023
- 2023-06-28 CN CN202310776428.4A patent/CN116619309B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007061977A (en) * | 2005-09-01 | 2007-03-15 | Makita Corp | Dust collector for power tool |
| JP2011251374A (en) * | 2010-06-02 | 2011-12-15 | Chugoku Electric Power Co Inc:The | Power tool |
| CN208358725U (en) * | 2018-06-29 | 2019-01-11 | 王晶 | A kind of electric drill with dust-absorbing function |
| CN114669139A (en) * | 2022-05-25 | 2022-06-28 | 宝嘉智能科技(南通)有限公司 | Self-cleaning air exchange device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116619309A (en) | 2023-08-22 |
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Denomination of invention: A lithium electric drill with dust removal function Granted publication date: 20240618 Pledgee: Wuyi County Sub-branch of Postal Savings Bank of China Ltd. Pledgor: Zhejiang Dechuang Intelligent Technology Co.,Ltd. Registration number: Y2024980029166 |