CN116373052A - Protective cover with double-path independent dust collecting port - Google Patents
Protective cover with double-path independent dust collecting port Download PDFInfo
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- CN116373052A CN116373052A CN202211723740.9A CN202211723740A CN116373052A CN 116373052 A CN116373052 A CN 116373052A CN 202211723740 A CN202211723740 A CN 202211723740A CN 116373052 A CN116373052 A CN 116373052A
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- 239000000428 dust Substances 0.000 title claims abstract description 362
- 230000001681 protective effect Effects 0.000 title claims abstract description 36
- 238000005520 cutting process Methods 0.000 claims abstract description 75
- 238000010521 absorption reaction Methods 0.000 claims abstract description 26
- 230000000903 blocking effect Effects 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
- 230000009471 action Effects 0.000 abstract description 6
- 230000006872 improvement Effects 0.000 abstract description 4
- 230000005484 gravity Effects 0.000 description 4
- 239000002023 wood Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G3/00—Arrangements for removing bark-zones, chips, waste, or dust, specially designed for use in connection with wood-working machine or in wood-working plants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
- B27B5/29—Details; Component parts; Accessories
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Sawing (AREA)
Abstract
The invention provides a protective cover with a double-path independent dust collection port, which aims at the problem that the dust collection efficiency of a dust collection device of a cutting tool in the prior art can be further improved, and belongs to the technical field of electric tools; the saw dust and dust that the saw bit secondary cutting produced is thrown from the place ahead of the rear direction saw bit cutting direction of saw bit cutting direction, and most saw dust and dust can be collected through back dust absorption passageway, and little saw dust and dust are not in the coverage of back dust absorption passageway, and preceding dust absorption passageway will not be collected by saw dust and dust of back dust absorption passageway, under the combined action of preceding dust absorption passageway and back dust absorption passageway, have apparent improvement to the collection effect of saw dust and dust that the secondary cutting produced.
Description
Technical Field
The invention belongs to the technical field of electric tools, and particularly relates to a protective cover with two-way independent dust collection ports.
Background
In operations such as cutting timber, metal, stone material, etc., the desk-top cutting tool carries out high-efficient, comprehensive collection of dust and accomodates and is the technical problem in the aspect of cutting tool dust removal always, at a mark type cutting table, the dust and dust of cutting can scatter in very big region, in part release to the air, get into human health harm along with breathing in, the dust and dust that scatter outside need clear up and collect troublesome especially, produces secondary pollution.
The existing cutting tool is generally provided with a dust removing device only at the lower part of the table cutting tool, for example, chinese patent application publication No. CN 107150378B discloses a dust-free table saw, and the dust removing device is only provided at the lower part of the table cutting tool. The table-type cutting tool moves along the tangential direction under the drive of the saw blade when cutting, more than 85% of dust and saw dust can enter the lower part of the cutting table, so that the dust removing device is arranged at the lower part to collect the dust, but 10% of saw dust is formed under the effect of secondary cutting, and enters the position above the table saw to cast the saw blade in front of the saw blade, in the prior art, the protective cover is usually only arranged on the knife plate at the saw blade position above the table surface, and the dust collecting effect is not good or weaker, or a dust discharging pipe is arranged at the tail part of the protective cover, and the dust discharging pipe is staggered with the position of the saw blade to cast the saw dust and is far away, so that the effect is poor.
Disclosure of Invention
The invention provides a protective cover with a double-path independent dust collection port, which aims at the problem that the dust collection efficiency of a dust collection device of a cutting tool in the prior art can be further improved.
The invention aims at realizing the following technical scheme: the protective cover with the double-path independent dust collection port is positioned on the table top of the table saw and covers the saw blade of the table saw from top to bottom, and comprises a protective cover shell with a cavity inside and an opening at the lower part, one end of the protective cover shell is rotatably connected to the end part of the heel knife plate, and a front dust collection channel and a rear dust collection channel for collecting secondary cutting dust are arranged in the protective cover shell;
the front dust collection channel comprises a front dust collection cavity and a first dust channel, and the front dust collection cavity is communicated with the first dust channel;
the rear dust collection channel comprises a rear dust collection cavity and a second dust channel, and the rear dust collection cavity is communicated with the second dust;
the front dust collection cavity is adjacent to the rear dust collection cavity, a cavity wall isolating the front dust collection cavity from the rear dust collection cavity is arranged between the front dust collection cavity and the rear dust collection cavity, the cavity diameter of the front dust collection cavity is larger than that of the first dust channel, and the cavity diameter of the front dust collection cavity gradually becomes smaller from the side close to the rear dust collection cavity to the first dust channel;
the diameter of the front dust collection cavity gradually becomes smaller and is transited to the first dust channel part which is positioned at the initial cutting side of the saw blade, and the transition section of the front dust collection cavity transited to the first dust channel is bent upwards obliquely towards the cutting initial side and then is bent towards the rear cutting;
a space for holding the first dust channel is reserved between the cavity wall of the front dust collection cavity and the channel wall of the first dust channel;
the cavity radial second dust channel of the rear dust collection cavity is gradually reduced, and the rear dust collection cavity is obliquely upwards towards the initial cutting side of the saw blade and is excessively bent towards the rear cutting direction.
During operations such as cutting timber, the table type cutting tool can generate twice sawdust, and after the front end of the saw blade is cut downwards for the first time, the sawdust is discharged downwards along with the tangential direction of saw teeth and the action of gravity, and is thrown out or sucked out from a dust discharge port of the saw blade shield below the table surface, and part of dust can fly on the table surface and in the surrounding environment. The saw dust occupies about 80% -85% of saw dust generated by cutting, after the front end of the saw blade is cut downwards for the first time, the saw dust is continuously pushed along with the workpiece, when the kerf passes through the rear end of the saw blade, as the parting blade is thinner than the kerf of the saw blade, the kerf opening is narrowed, a small amount of upward cutting naturally occurs, and most of the saw dust which is cut upwards is left on a table top or directly drifts. The saw dust collecting device collects the saw dust through the front dust collecting channel and the rear dust collecting channel which are covered on the saw blade, and can collect about 98% of dust generated by primary cutting and the saw dust and dust generated by secondary cutting by matching with the saw blade shield which is positioned under the table top in the prior art.
The saw dust and dust that the saw bit secondary cutting produced is thrown from the place ahead of the rear direction saw bit cutting direction of saw bit cutting direction, and most saw dust and dust can be collected through back dust absorption passageway, and little saw dust and dust are not in the coverage of back dust absorption passageway, and preceding dust absorption passageway will not be collected by saw dust and dust of back dust absorption passageway, under the combined action of preceding dust absorption passageway and back dust absorption passageway, have apparent improvement to the collection effect of saw dust and dust that the secondary cutting produced.
The space formed between the front dust collection cavity and the first dust channel can be convenient for a user to hold and lift the protective cover.
One end of the protective cover is rotationally connected to the knife following plate, so that the protective cover can be rotated at will in the cutting process of the saw blade, and the protective cover can be kept to cover the workpieces when the saw blade cuts the workpieces with different thicknesses, thereby preventing sawdust and dust from overflowing from the protective cover.
Preferably, a blocking part formed by bending towards the rear of the cutting is arranged at the opening of the lower part of the protective cover shell at the starting side of the cutting, the blocking part is parallel to the table top, and the end part of the blocking part is positioned at the front end of the saw blade.
Preferably, the dust outlets of the first dust channel and the second dust channel are higher than the dust inlet. The advantages of this arrangement are that: the saw dust and dust, if not sucked by the dust suction device or dust suction apparatus provided at the ports of the first dust passage and the second dust passage, automatically fall back down into the blade guard below the platen through the gap between the blade and the platen. And this kind of structure setting of first dust passageway and second dust passageway makes whole focus skew saw bit cutting start side, and then makes the focus of whole safety cover skew saw bit cutting start side to make this safety cover when the work piece of different thickness of cutting, the lower tip that the safety cover is located the work piece feeding side all can lean on self gravity laminating on the work piece, improved the sealing performance of safety cover.
Preferably, the first dust passage and the second dust passage have the same inner diameter.
Preferably, the dust outlet of the first dust channel is flush with the dust outlet of the second dust channel, and the first dust channel and the second dust channel are arranged in parallel up and down; the dust outlet of the first dust channel and the dust outlet of the second dust channel are stacked up and down. The first dust channel and the second dust channel are arranged together, so that dust collection by external dust collection equipment is facilitated.
Preferably, the length of the front dust suction cavity cover arranged on the saw blade is longer than that of the rear dust suction cavity cover arranged on the saw blade. The inner space of the front dust collection cavity is larger than that of the rear dust collection cavity, and when the air suction quantity is unchanged, the smaller the air inlet is, the larger the air speed is, namely the stronger the suction force is, so that the dust collection effect of the rear dust collection cavity is better.
Preferably, the included angle formed by the cavity wall of the front dust collection cavity and the rear dust collection cavity facing the cutting starting side and the table top of the table saw is similar to the included angle formed by the tangent line and the table top of the table saw, wherein the tangent line is formed by the dust driven by the saw blade closest to the cavity wall to be thrown forward by the saw blade. The saw dust and dust that make to be thrown out by the saw bit can not be blocked get into the place that is nearer to first dust passageway or second dust passageway, because the inside diameter of first dust passageway or second dust passageway is less, and the suction is great relatively, and the saw dust and the dust of joining in marriage the throwing out can be absorbed more easily and collect, has increased dust collection effect.
Preferably, the rear dust collection cavity part is covered on the heel knife plate. The cover setting range of the protective cover is larger than the saw blade part exposed on the table top, so that saw dust and dust generated on the saw blade on the table top can not overflow.
Compared with the prior art, the invention has the following beneficial effects:
the saw dust and dust that the saw bit secondary cutting produced is thrown from the place ahead of the rear direction saw bit cutting direction of saw bit cutting direction, and most saw dust and dust can be collected through back dust absorption passageway, and little saw dust and dust are not in the coverage of back dust absorption passageway, and preceding dust absorption passageway will not be collected by saw dust and dust of back dust absorption passageway, under the combined action of preceding dust absorption passageway and back dust absorption passageway, have apparent improvement to the collection effect of saw dust and dust that the secondary cutting produced. Meanwhile, the space formed between the front dust collection cavity and the first dust channel can be convenient for a user to hold and lift the protective cover.
Drawings
FIG. 1 is a longitudinal cross-sectional view of the present invention sawing a 50mm thick workpiece;
FIG. 2 is a longitudinal cross-sectional view of the present invention sawing a 10mm thick workpiece;
figure 3 is a graph comparing the angle a between the wall of the front dust collection cavity and the table top with the angle b between the tangent line of the saw dust thrown by the saw blade nearby and the table top.
The marks in the figure: 1. a table top; 2. a knife following plate; 3. a saw blade; 4. a blade guard; 5. a front dust collection cavity; 6. a first dust channel; 7. a rear dust collection cavity; 8. a second dust channel; 9. a blocking portion; 10. a workpiece.
Detailed Description
The invention is further described below with reference to embodiments shown in the drawings in which:
as shown in fig. 1 and 2, a protective cover with two paths of independent dust collecting openings is located above a table top 1 of a table saw and is covered on a saw blade 3 of the table saw from top to bottom, and comprises a protective cover shell with a cavity inside and an opening at the lower part, wherein one end of the protective cover shell, which is close to a heel knife plate 2, is rotationally connected to the end part of the heel knife plate 2, and the rotating connection structure is a hinged connection structure.
The protective housing body is internally provided with a front dust collection channel and a rear dust collection channel for collecting secondary cutting dust:
the front dust collection channel comprises a front dust collection cavity 5 and a first dust channel 6, the front dust collection cavity 5 is communicated with the first dust channel 6, the rear dust collection channel comprises a rear dust collection cavity 7 and a second dust channel 8, and the rear dust collection cavity 7 is communicated with the second dust.
The length of the front dust collection cavity 5 covered on the saw blade 3 is longer than the length of the rear dust collection cavity 7 covered on the saw blade 3.
The lower opening of the front dust collection cavity 5 at the cutting start side is provided with a blocking part 9 bent to the rear of the cutting, the blocking part 9 is parallel to the table top 1, and the end part of the blocking part 9 is positioned at the front end of the saw blade 3. The rear dust collection cavity 7 is partially covered on the heel knife board 2. The cover setting range of the protective cover is larger than the saw blade 3 part exposed on the table top 1, so that saw dust and dust generated on the saw blade 3 on the table top 1 can not overflow.
The front dust collection cavity 5 is adjacent to the rear dust collection cavity 7, a cavity wall isolating the front dust collection cavity 5 from the rear dust collection cavity 7 is arranged between the front dust collection cavity 5 and the rear dust collection cavity 7, the cavity diameter of the front dust collection cavity 5 is larger than that of the first dust channel 6, and the cavity diameter of the front dust collection cavity 5 is gradually reduced from the side close to the rear dust collection cavity 7 to the first dust channel 6;
the cavity diameter of the front dust collection cavity 5 gradually becomes smaller and is transited to the first dust channel 6 which is partially positioned at the initial cutting side of the saw blade 3, and the transition section of the front dust collection cavity 5 transited to the first dust channel 6 is bent upwards obliquely towards the initial cutting side and then is bent towards the rear cutting;
the second dust channel 8 in the cavity diameter of the rear dust collection cavity 7 is gradually reduced, the cavity diameter of the dust collection cavity is larger than that of the second dust channel 8, and the rear dust collection cavity 7 is bent upwards obliquely towards the initial cutting side of the saw blade 3 and then is bent towards the rear cutting direction excessively.
Because the air quantity is unchanged, the air inlet is smaller, and then the air speed in unit time is larger: q=a×v, wherein Q air volume is constant, a becomes smaller and V becomes larger; dynamic pressure: pd=pv≡2/2 p is the gas density, V is the wind speed, and V described above becomes large, and the dynamic pressure Pd becomes large. That is, the suction force generated by the air flowing from the large space into the small space, i.e., the air flowing from the front dust collection chamber 5 to the first dust passage 6 or the air flowing from the rear dust collection chamber 7 to the second dust passage 8 in the present invention is stronger.
The inner diameters of the first dust channel 6 and the second dust channel 8 are the same, the dust outlet of the first dust channel 6 and the dust outlet of the second dust channel 8 are flush, and the first dust channel 6 and the second dust channel 8 are arranged in parallel up and down; the dust outlet of the first dust channel 6 and the dust outlet of the second dust channel 8 are stacked up and down. The first dust channel 6 and the second dust channel 8 are arranged together, so that the installation and the butt joint of external dust collection equipment or dust collection devices of the bench saw are convenient.
Furthermore, a space for holding the first dust passage 6 is left between the wall of the front dust suction chamber 5 and the passage wall of the first dust passage 6.
As shown in fig. 3, the included angle formed by the cavity wall of the front dust collection cavity 5 and the rear dust collection cavity 7 facing the cutting start side and the table top 1 of the table saw is similar to the included angle formed by the tangent line formed by the blade 3 nearest to the cavity wall throwing dust to the front of the blade 3 and the table top 1 of the table saw. The saw dust and dust that make to be thrown out by saw bit 3 can not be blocked get into the place that is close to first dust passageway 6 or second dust passageway 8, because the inside diameter of first dust passageway 6 or second dust passageway 8 is less, and the suction is great relatively, and the saw dust and the dust of joining in marriage the throwing out can be absorbed more easily and collect, has increased the dust collection effect.
The dust outlets of the first dust channel 6 and the second dust channel 8 are higher than the dust inlet. The advantages of this arrangement are that: the saw dust and dust, if not sucked by the dust suction devices or dust suction apparatuses provided at the ports of the first dust passage 6 and the second dust passage 8, automatically fall back down into the blade guard 4 below the table through the gap between the blade 3 and the table. And this kind of structure setting of first dust passageway 6 and second dust passageway 8 makes whole focus skew saw bit 3 cut the beginning side, and then makes the focus of whole safety cover skew saw bit 3 cut the beginning side to make this safety cover when cutting the work piece 10 of different thickness, the lower tip that the safety cover is located work piece 10 feeding side can all be laminated on work piece 10 by self gravity, has improved the sealing performance of safety cover.
The workpiece 10 in this embodiment is wood, and when wood is cut,
during wood cutting operation, the bench cutting tool can generate twice sawdust, after the front end of the saw blade 3 is cut downwards for the first time, the sawdust is discharged downwards along with the tangential direction of saw teeth and the action of gravity, and is thrown out or sucked out from a dust discharge port of the saw blade shield 4 below the table top 1, and part of dust can fly on the table top and in the surrounding environment. The saw dust occupies about 80% -85% of the saw dust generated by cutting, and after the front end of the saw blade 3 is cut downwards for the first time, as the workpiece 10 is further pushed, when the kerf passes through the rear end of the saw blade 3, the kerf opening is narrowed because the parting blade is thinner than the kerf of the saw blade 3, a small upward cutting naturally occurs, and most of the saw dust cut upwards remains on the table top 1 or directly drifts. The saw dust collecting device collects the saw dust through the front dust collecting channel and the rear dust collecting channel which are covered on the saw blade 3, and can collect about 98% of dust generated by primary cutting and the saw dust and dust generated by secondary cutting by matching with the saw blade shield 4 which is positioned under the table top 1 in the prior art.
The saw dust and dust that saw bit 3 secondary cutting produced is thrown from the place ahead of the rear direction saw bit 3 cutting direction of saw bit 3 cutting direction, and most saw dust and dust can be collected through back dust absorption passageway, and little saw dust and dust are not in the coverage of back dust absorption passageway, and preceding dust absorption passageway will not be collected by saw dust and dust of back dust absorption passageway, and under the combined action of preceding dust absorption passageway and back dust absorption passageway, the collection effect to saw dust and dust that secondary cutting produced has showing improvement.
One end of the protective cover is rotationally connected to the knife following plate 2, so that the protective cover can be rotated at will in the cutting process of the saw blade 3, and the protective cover can be kept to cover the workpiece 10 when the saw blade 3 cuts workpieces 10 with different thicknesses, thereby preventing sawdust and dust from overflowing from the protective cover.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (8)
1. The utility model provides a protection casing with independent dust collection mouth of double-circuit, is located on mesa (1) of table saw and covers down on saw bit (3) of table saw from top to bottom, including inside for cavity and lower open-ended protection casing, the one end of this protection casing rotates to be connected on the tip with cutting board (2), its characterized in that, protection casing internal has preceding dust absorption passageway and the back dust absorption passageway that is used for collecting the secondary cutting dust:
the front dust collection channel comprises a front dust collection cavity (5) and a first dust channel (6), and the front dust collection cavity (5) is communicated with the first dust channel (6);
the rear dust collection channel comprises a rear dust collection cavity (7) and a second dust channel (8), and the rear dust collection cavity (7) is communicated with second dust;
the front dust collection cavity (5) is adjacent to the rear dust collection cavity (7), the cavity wall isolating the front dust collection cavity (5) from the rear dust collection cavity (7) is arranged between the front dust collection cavity (5) and the rear dust collection cavity (7), the cavity diameter of the front dust collection cavity (5) is larger than that of the first dust channel (6), and the cavity diameter of the front dust collection cavity (5) is gradually reduced from the side close to the rear dust collection cavity (7) to the first dust channel (6);
the cavity diameter of the front dust collection cavity (5) is gradually reduced and is transited to the first dust channel (6) which is partially positioned at the initial cutting side of the saw blade (3), and the transition section of the front dust collection cavity (5) transited to the first dust channel (6) is bent upwards and backwards towards the cutting starting side in an inclined way;
a space for holding the first dust channel (6) is reserved between the cavity wall of the front dust collection cavity (5) and the channel wall of the first dust channel (6);
the cavity radial second dust channel (8) of the rear dust collection cavity (7) is gradually reduced, and the rear dust collection cavity (7) is obliquely upwards towards the initial cutting side of the saw blade (3) and then excessively bent towards the rear of the cutting.
2. The protective cover with the double-path independent dust collecting port according to claim 1, wherein a blocking part (9) formed by bending towards the rear of cutting is arranged at the lower opening of the protective cover shell at the starting side of cutting, the blocking part (9) is parallel to the table top (1), and the end part of the blocking part (9) is positioned at the front end of the saw blade (3).
3. The protective cover with two-way independent dust collection openings according to claim 1, characterized in that the dust outlets of the first dust channel (6) and the second dust channel (8) are both higher than the dust inlet.
4. The protective cover with two-way independent dust collection openings according to claim 1, characterized in that the inner diameters of the first dust channel (6) and the second dust channel (8) are the same.
5. The protective cover with the double-path independent dust collection port according to claim 1, wherein the dust outlet of the first dust channel (6) and the dust outlet of the second dust channel (8) are flush, and the first dust channel (6) and the second dust channel (8) are arranged in parallel up and down; the dust outlet of the first dust channel (6) and the dust outlet of the second dust channel (8) are stacked up and down.
6. The protective cover with the double-path independent dust collection port according to claim 1, wherein the length of the front dust collection cavity (5) covered on the saw blade (3) is longer than the length of the rear dust collection cavity (7) covered on the saw blade (3).
7. The protective cover with the double-path independent dust collection port according to claim 1, wherein the included angle formed by the cavity wall of the front dust collection cavity (5) and the back dust collection cavity (7) facing the cutting starting side and the table top (1) of the table saw is similar to the included angle formed by the tangent line formed by the blade (3) closest to the cavity wall and pushing dust to the front of the blade (3) and the table top (1) of the table saw.
8. The protective cover with the double-path independent dust collection opening according to claim 1, wherein the rear dust collection cavity (7) is partially covered on the heel knife plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211723740.9A CN116373052A (en) | 2022-12-30 | 2022-12-30 | Protective cover with double-path independent dust collecting port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211723740.9A CN116373052A (en) | 2022-12-30 | 2022-12-30 | Protective cover with double-path independent dust collecting port |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116373052A true CN116373052A (en) | 2023-07-04 |
Family
ID=86968117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211723740.9A Pending CN116373052A (en) | 2022-12-30 | 2022-12-30 | Protective cover with double-path independent dust collecting port |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116373052A (en) |
-
2022
- 2022-12-30 CN CN202211723740.9A patent/CN116373052A/en active Pending
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