Dustproof electric drill with dustproof cover

Abstract

The invention discloses a dustproof electric drill with a dustproof cover, and belongs to the technical field of electric drills. Comprising an electric drill body, a drill bit is installed on the electric drill body, and a drill chuck is locked on the drill bit; the dustproof assembly comprises a collecting box, and a splash-proof cylinder is slidably connected to the collecting box. The dust collection assembly comprises a supporting cylinder, a plurality of blades are installed in the supporting cylinder, an adjusting plate is rotatably installed on the supporting cylinder, a connecting pipe is installed on the adjusting plate, and the supporting cylinder communicates with the gas collection bin through the connecting pipe; the supporting cylinder is rotationally connected with the collecting box through a bearing and is connected to the drill chuck in an inserted mode. The transparent splash-proof barrel is attached to the working face under pushing of the elastic piece, and large-particle drilling cuttings are effectively prevented from splashing; two groups of partition plates in the collecting box divide the internal space into a gas collecting bin and a slag collecting bin, and the slag collecting bin intercepts drilling cuttings through a first / second elastic belt and prevents the drilling cuttings from falling off and polluting; the air collection bin sucks air through rotation of blades of the dust suction assembly, and tiny dust is guided into the dust collection bag through the exhaust pipe.

Description

Technical Field

[0001] This invention relates to the field of electric drill technology, and more specifically, to a dustproof electric drill with a dust cover. Background Technology

[0002] In fields such as industrial manufacturing, building decoration, and furniture processing, electric drills are commonly used drilling tools, and their operation generates a large amount of drill chips (such as metal chips, wood chips, concrete particles, etc.) and dust.

[0003] When drilling with existing electric drills, the high-speed rotating drill bit causes drill chips to fly in all directions, not only contaminating the work surface (such as walls, floors, and equipment surfaces) and increasing the difficulty of subsequent cleaning, but also potentially injuring operators. This is especially true when drilling upwards, as the drill chips can easily fall into the operator's eyes, mouth, and nose, preventing them from looking directly at the work surface and increasing the difficulty of the operation. At the same time, the micro-dust generated during drilling (such as concrete dust and sawdust) remains suspended in the air, and inhalation can easily cause respiratory diseases, posing serious health risks with long-term use. Therefore, we propose a dustproof electric drill with a dust cover. Summary of the Invention

[0004] The purpose of this invention is to provide a dustproof electric drill with a dust cover to solve the technical problem in the prior art where falling drill chips prevent the operator from looking directly at the work surface, resulting in difficult operation and environmental pollution.

[0005] This invention provides a dustproof electric drill with a dust cover, including a drill body, a drill bit mounted on the drill body, and a drill chuck locked onto the drill bit; The dustproof assembly includes a collection box installed on the drill body, a splash guard slidably connected to the collection box, an elastic element for pushing the splash guard on the collection box, and the collection box dividing the internal space into an air collection chamber and a slag collection chamber by a partition. The dust collection assembly includes a support cylinder, several blades are installed inside the support cylinder, a protective net is installed on the air inlet side of the support cylinder, an adjustment plate is rotatably installed on the support cylinder, a connecting pipe is installed on the adjustment plate, and the connecting pipe connects the support cylinder and the air collection chamber. The support cylinder is rotatably connected to the collection box via a bearing, and the support cylinder is inserted into the drill chuck. The drill bit drives the blades to rotate through the drill chuck. The drill cuttings generated during drilling fall into the slag collection bin for temporary storage. Dust and gas enter the gas collection bin under the airflow generated by the rotating blades and are guided into the dust collection belt, thus achieving the separation and collection of drill cuttings and dust and gas.

[0006] As a further description of the above technical solution, the collection box is equipped with several guide rods, which are inserted into the bolt mounting holes of the electric drill body for limiting. An adjustment frame is rotatably installed on the collection box, and a screw is screwed onto the adjustment frame. A top block is rotatably installed at the end of the screw.

[0007] As a further description of the above technical solution, a first elastic belt and a second elastic belt are installed at an angle inside the slag collection bin, with the first elastic belt and the second elastic belt located on opposite sides.

[0008] As a further description of the above technical solution, the inclined width of the first elastic band and the second elastic band is not less than half the width of the slag collection bin trough.

[0009] As a further description of the above technical solution, a fixed rod is installed at the free end of both the first elastic band and the second elastic band, a threaded rod is screwed onto the collection box, a guide frame is rotatably connected to the threaded rod, and the guide frame slides in the slag collection bin and is fixedly connected to the fixed rod.

[0010] As a further description of the above technical solution, the drill chuck includes a sleeve, a collet, and a top ring. The top ring is adapted to the sleeve. A limit ring is provided inside the sleeve. Several limit blocks are fixedly connected to the limit ring. A limit groove is provided on the collet, and the limit ring is inserted into the limit groove. The collet has a limiting hole, a limiting block is inserted into the limiting hole, an adjusting sleeve is screwed onto the collet, an adjusting groove is provided on the inner side of the adjusting sleeve, a number of adjusting blocks are fixedly installed on the top ring, the adjusting blocks pass through the collet and are inserted into the adjusting groove, and an inclined surface is provided on the top ring.

[0011] As a further description of the above technical solution, the jacket is provided with a plurality of positioning holes; A positioning rod is fixedly installed inside the support cylinder, and the positioning rod is inserted into the positioning hole.

[0012] As a further description of the above technical solution, the center height of the air inlet side of the support cylinder is greater than the edge height, forming an inclined surface.

[0013] As a further description of the above technical solution, a baffle is fixedly installed on the support cylinder, and the outer diameter of the baffle is larger than the inner diameter of the outer ring of the bearing.

[0014] As a further description of the above technical solution, the splash guard is made of transparent material.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The transparent splash guard of this invention adheres to the working surface under the push of the elastic element, effectively blocking large drill cuttings from splashing. The two sets of partitions inside the collection box divide the internal space into an air collection chamber and a slag collection chamber. The slag collection chamber intercepts drill cuttings through the first / second elastic bands to prevent them from falling and causing pollution. The air collection chamber draws in air through the rotating blades of the dust collection component, and guides the micro-dust into the dust collection bag through the exhaust pipe. The three work together to achieve splash protection, storage and collection of drill cuttings, and graded treatment of micro-particle filtration. This not only prevents operators from inhaling micro-dust, but also prevents drill cuttings from scattering onto the operator's face or around the working environment, significantly reducing pollution to the working environment.

[0016] 2. The threaded rod of this invention can flexibly switch the tilt direction of the first elastic band and the second elastic band. When the elastic band tilts towards the bottom of the slag collection bin, it ensures that drill cuttings do not fall when drilling in the air or upwards, thus improving the reliability of slag collection. When the elastic band tilts towards the opening of the collection box, it can quickly unload materials or prevent drill cuttings from entering the collection box when drilling downwards, causing them to accumulate around the work point for centralized cleaning. It can adapt to multiple scenarios such as aerial drilling, upward drilling, downward drilling, and cleaning and maintenance, greatly improving operational flexibility and efficiency.

[0017] 3. The rotation of the blades in this invention is completely synchronized with the drilling process, ensuring that the micro-dust generated during drilling is immediately sucked into the air collection chamber, preventing dust from spreading after the operation is completed; at the same time, the dust collection is driven by the power of the electric drill itself, which simplifies the structure, reduces energy consumption, and requires no additional maintenance of the power components, thus improving the durability of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a dustproof electric drill with a dust cover, as disclosed in a preferred embodiment of the present invention. Figure 2 This is a partial cross-sectional view of a dustproof electric drill with a dust cover, as disclosed in a preferred embodiment of the present invention. Figure 3 This is a schematic diagram of the installation position of the protective net of a dustproof electric drill with a dust cover, as disclosed in a preferred embodiment of the present invention. Figure 4 This is a schematic diagram of the air collection chamber location of a dustproof electric drill with a dust cover, as disclosed in a preferred embodiment of the present invention. Figure 5 This is a schematic diagram of the guide frame connection structure of a dustproof electric drill with a dust cover, as disclosed in a preferred embodiment of the present invention. Figure 6 A dustproof electric drill with a dust cover is disclosed in a preferred embodiment of the present invention. Figure 2 Enlarged view of point A in the middle; Figure 7 This is a schematic diagram of the drill chuck structure of a dustproof electric drill with a dust cover, as disclosed in a preferred embodiment of the present invention. Figure 8This is a cross-sectional view of the drill chuck of a dustproof electric drill with a dust cover, as disclosed in a preferred embodiment of the present invention. Figure 9 This is a schematic diagram of the installation position of the limiting ring of a dustproof electric drill with a dust cover, as disclosed in a preferred embodiment of the present invention. Figure 10 This is a schematic diagram of the collet structure of a dustproof electric drill with a dust cover, as disclosed in a preferred embodiment of the present invention. Figure 11 This is a schematic diagram of the installation position of the connecting pipe of a dustproof electric drill with a dust cover, as disclosed in a preferred embodiment of the present invention. Figure 12 This is a schematic diagram of the blade installation position of a dustproof electric drill with a dust cover, as disclosed in a preferred embodiment of the present invention.

[0019] Explanation of the numbers in the diagram: 1. Drill body; 11. Drill bit; 2. Dustproof assembly; 21. Collection box; 22. Splash guard; 23. Elastic element; 24. Baffle; 25. Air collection chamber; 26. Slag collection chamber; 251. Exhaust pipe; 27. First elastic band; 28. Second elastic band; 29. ​​Fixing rod; 210. Threaded rod; 211. Guide frame; 212. Guide rod; 213. Adjusting frame; 214. Screw; 215. Top block; 3. Drill chuck. 31. Jacket; 32. Collet; 33. Top ring; 34. Limiting ring; 35. Limiting block; 36. Limiting groove; 37. Limiting hole; 38. Adjusting sleeve; 39. Adjusting groove; 310. Guide hole; 311. Adjusting block; 312. Inclined surface; 313. Positioning hole; 4. Dust collection assembly; 41. Support cylinder; 42. Blade; 43. Protective net; 44. Adjusting plate; 45. Connecting pipe; 46. Positioning rod; 47. Baffle; 5. Bearing. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Reference Figures 1 to 12This embodiment discloses a dustproof electric drill with a dust cover, including a drill body 1, a drill bit 11 mounted on the drill body 1, and a dustproof component 2 mounted on the drill body 1. The dustproof component 2 includes a collection box 21, and a splash guard 22 slidably connected to the collection box 21. The splash guard 22 communicates with the opening of the collection box 21. The splash guard 22 is made of a transparent material, such as acrylic sheet, to avoid obstructing the drilling positioning point and ensure a clear view of the drilling position. An elastic element 23 is mounted on the collection box 21. One end of the elastic element 23 is fixedly connected to the collection box 21, and the other end is fixedly connected to the splash guard 22. The elastic element 23 is used to push the splash guard 22 towards the feed end of the collection box 21 until it moves to the end limiting structure, which is not shown in the figure.

[0022] Two sets of partitions 24 are fixedly installed inside the collection box 21, which divides the internal space of the collection box 21 into a gas collection chamber 25 and a slag collection chamber 26. An exhaust pipe 251 is connected to the tail end of the gas collection chamber 25. The dust collection bag is connected to the exhaust pipe 251 through a hose. The gas discharged from the gas collection chamber 25 enters the dust collection bag through the hose, thereby filtering and collecting the micro dust particles carried in the working air, reducing air pollution, and also preventing micro dust particles from falling into the eyes, mouth, nose and other parts of the operator.

[0023] The slag collection bin 26 is equipped with a first elastic band 27 and a second elastic band 28. Both the first elastic band 27 and the second elastic band 28 are made of wear-resistant material. The first elastic band 27 is installed on the side with the larger outer diameter of the slag collection bin 26, and the second elastic band 28 is installed on the side with the smaller outer diameter of the slag collection bin 26. Both the first elastic band 27 and the second elastic band 28 are inclined towards the bottom of the slag collection bin 26, and the inclination width is not less than half the width of the groove of the slag collection bin 26. The drill cuttings entering the slag collection bin 26 can be effectively blocked by the elastic bands, so as to prevent the slag collection bin 26 from falling from the opening when the drilling position is changed, thus improving the safety of the operation and the reliability of slag collection.

[0024] Reference Figure 2 , Figure 4 and Figure 5 Fixed rods 29 are fixedly installed at the free ends of the first elastic band 27 and the second elastic band 28. A threaded rod 210 is threadedly connected to the tail end of the collection box 21. A guide frame 211 is rotatably connected to the end of the threaded rod 210. The guide frame 211 slides within the slag collection bin 26 and is fixedly connected to the two fixed rods 29. Therefore, by rotating the threaded rod 210, the guide frame 211 can be pushed towards the opening of the collection box 21, thereby causing the fixed rod 29 to move to the front end of the elastic band, causing the elastic band to change its tilt direction, switching from tilting towards the bottom of the collection box 21 to tilting towards the opening of the collection box 21. At this time, when the opening of the collection box 21 is facing downwards, the drill cuttings particles in the slag collection bin 26 can cross the elastic band and fall from the opening of the collection box 21, thereby achieving unloading.

[0025] Furthermore, when drilling downwards, the elastic band can be adjusted to face the opening of the collection box 21. The drill cuttings generated during drilling are obstructed by the splash guard 22 and the elastic band, quickly accumulating around the borehole and preventing them from splashing everywhere or entering the collection box 21. By adjusting the tilt direction of the elastic band, it is possible to adapt to the operational needs of different scenarios.

[0026] Reference Figure 1 The tail end of the collection box 21 is fixedly equipped with several guide rods 212. The guide rods 212 can be inserted into the bolt mounting holes of the electric drill body 1 for positioning, thereby supporting and limiting the collection box 21. The tail end of the collection box 21 is rotatably equipped with an adjustment frame 213. A screw 214 is threadedly connected to the adjustment frame 213. A top block 215 is rotatably installed at the end of the screw 214. The top block 215 can abut against the bottom of the electric drill body 1, thereby maintaining the stability of the collection box 21.

[0027] Reference Figures 5 to 10 To address the issue of collecting fine dust particles, this embodiment also includes a drill chuck 3. The drill chuck 3 comprises a sleeve 31, a collet 32, and a top ring 33. The top ring 33 is adapted to the sleeve 31. A limit ring 34 is provided inside the sleeve 31, and several limit blocks 35 are fixedly connected to the limit ring 34. A limit groove 36 is provided on the collet 32, and the limit ring 34 is inserted into the limit groove 36 to limit the collet 32 ​​within the sleeve 31. The collet 32 ​​is made of alloy spring steel and can repeatedly clamp and spring back. A limit hole is provided on the collet 32. 37. The limiting block 35 is inserted into the limiting hole 37 to limit the circumferential rotation of the collet 32. An adjusting sleeve 38 is threaded onto the sleeve 31. An adjusting groove 39 is provided on the inner side of the adjusting sleeve 38. Several guide holes 310 are provided on the sleeve 31. Several adjusting blocks 311 are fixedly installed on the top ring 33. The adjusting blocks 311 are slidably connected to the guide holes 310 and pass through the guide holes 310 to be inserted into the adjusting groove 39. An inclined surface 312 is provided on the top ring 33. Several positioning holes 313 are provided on the sleeve 31. By rotating the adjusting sleeve 38, the inclined surface 312 of the top ring 33 can be brought into contact with the end of the collet 32, and then the collet 32 ​​is squeezed to retract, thereby clamping and fixing it to the drill bit 11.

[0028] Reference Figure 2 , Figure 3 , Figure 6 , Figure 11 and Figure 12A dust collection component 4 is installed on the drill chuck 3. The dust collection component 4 includes a support cylinder 41. Several blades 42 are fixedly installed inside the support cylinder 41. The blades 42 are inclined. A protective net 43 is fixedly installed on the air inlet side of the support cylinder 41 to prevent drill cuttings from entering the support cylinder 41. The center height of the air inlet side of the support cylinder 41 is greater than the edge height, forming an inclined surface, which can guide the drill cuttings in the airflow to separate towards the edge and prevent them from entering the interior of the support cylinder 41. An adjusting plate 44 is rotatably installed on the side of the support cylinder 41 away from the protective net 43. A connecting pipe 45 is installed on the adjusting plate 44, which connects the support cylinder 41 and the air collection chamber 25. A positioning rod 46 is fixedly installed inside the support cylinder 41 and is inserted into the positioning hole 313. The support cylinder 41 is rotatably connected to the collection box 21 through a bearing 5. A baffle 47 is fixedly installed on the support cylinder 41. The outer diameter of the baffle 47 is greater than the inner diameter of the outer ring of the bearing 5, thereby preventing dust or drill cuttings from entering the inner wall of the bearing 5 and effectively protecting the bearing 5. When the drill bit 11 rotates, the support cylinder 41 can rotate synchronously with the drill chuck 3, thereby enabling the blades 42 to rotate rapidly and draw dust and gas around the borehole into the gas collection chamber 25.

[0029] Working principle: After the drill bit 11 is installed and fixed, the drill chuck 3 is inserted into the drill bit 11. The adjusting sleeve 38 is rotated, which drives the adjusting block 311 and the top ring 33 to move towards the collet 32. The inclined surface 312 of the top ring 33 presses against the collet 32. After being pressed, the collet 32 ​​clamps the drill bit 11, thus completing the installation of the drill chuck 3.

[0030] Place the collection box 21 over the head of the drill body 1, insert the guide rod 212 into the bolt mounting hole of the drill body 1, and insert the positioning rod 46 into the positioning hole 313. To reduce the difficulty of insertion, the splash guard 22 can be manually moved towards the tail end of the collection box 21 and the elastic element 23 can be compressed to bring the dust collection component 4 close to the splash guard section of the splash guard 22. Then, manually adjust the rotation of the dust collection component 4 to align the positioning rod 46 with the positioning hole 313. After insertion, the splash guard 22 is reset under the elastic force of the elastic element 23. Rotate the adjusting bracket 213 to move the top block 215 to the tail end of the drill body 1. Rotate the screw 214 to drive the top block 215 to press against the tail end of the drill body 1. With the combined action of the top block 215 pressing, the guide rod 212 inserting, the positioning rod 46 inserting, and the drill chuck 3 locking, the dust protection component 2 is installed on the drill body 1. Finally, connect the dust collection bag to the exhaust pipe 251.

[0031] The dustproof electric drill can adjust its working mode according to different drilling directions. When drilling in the air or upwards, rotating the threaded rod 210 drives the guide frame 211 to move to the bottom of the slag collection bin 26. At this time, the first elastic band 27 and the second elastic band 28 are inclined towards the bottom of the collection box 21 and are in a taut state. When drilling, the drill bit 11 and the hole marking point are observed through the transparent splash guard 22, so that the drill bit 11 is aligned with the drilling position and the splash guard 22 is in contact with the object. When the drill bit 11 rotates at high speed, the drill chuck 3 drives the support cylinder 41 to rotate synchronously via the positioning rod 46, which in turn drives the blade 42 to rotate. Holding the drill body 1 and applying pressure causes the drill bit 11 to drill a hole. During drilling, the splash guard 22 continuously compresses the elastic element 23 and moves towards the tail end of the collection box 21. Drill cuttings fall into the collection box 21, while dust and gas enter the support cylinder 41 under the influence of the blade 42. Then, through the connecting pipe 45, the air collection chamber 25, and the exhaust pipe 251, they enter the dust collection bag, achieving dust and gas filtration and collection. Therefore, the blade 42 of this dustproof drill can rotate synchronously with the drill bit 11, eliminating the need for an additional drive source for the blade 42. When a single hole is completed, the surrounding dust and gas are absorbed synchronously, and no dust diffuses when the splash guard 22 leaves the drilling position.

[0032] When too much drill cuttings are discharged from the slag collection bin 26, the elastic band is tilted toward the opening of the collection box 21 by rotating the threaded rod 210, so that the opening of the collection box 21 is downward, thus achieving the discharge of drill cuttings.

[0033] When drilling downwards, the elastic band can be directly adjusted to the unloading mode. The drill cuttings generated during drilling are blocked by the splash guard 22 and the elastic band, preventing them from splashing everywhere or entering the collection box 21 for collection. This allows the drill cuttings to accumulate quickly around the borehole without the need to adjust the direction of the elastic band, thus reducing the complexity of the operation.

[0034] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A dustproof electric drill with a dust cover, characterized in that: Includes an electric drill body (1), on which a drill bit (11) is installed, and a drill chuck (3) is locked on the drill bit (11). The dustproof assembly (2) includes a collection box (21) installed on the electric drill body (1), a splash guard (22) slidably connected to the collection box (21), an elastic element (23) for pushing the splash guard (22) is installed on the collection box (21), and the internal space of the collection box (21) is divided into a gas collection chamber (25) and a slag collection chamber (26) by a partition (24). The dust collection assembly (4) includes a support cylinder (41), a number of blades (42) are installed inside the support cylinder (41), a protective net (43) is installed on the air inlet side of the support cylinder (41), an adjustment plate (44) is rotatably installed on the support cylinder (41), a connecting pipe (45) is installed on the adjustment plate (44), and the connecting pipe (45) connects the support cylinder (41) and the air collection chamber (25); The support cylinder (41) is rotatably connected to the collection box (21) via a bearing (5), and the support cylinder (41) is inserted into the drill chuck (3); The drill bit (11) drives the blades (42) to rotate through the drill chuck (3). The drill cuttings generated during the drilling operation fall into the slag collection bin (26) for temporary storage. The dust and gas enter the gas collection bin (25) under the action of the airflow formed by the rotation of the blades (42) and are guided into the dust collection belt, realizing the separation and collection of drill cuttings and dust and gas.

2. The dustproof electric drill with a dust cover according to claim 1, characterized in that: The collection box (21) is equipped with several guide rods (212), which are inserted into the bolt mounting holes of the electric drill body (1) for positioning. An adjustment frame (213) is rotatably installed on the collection box (21), and a screw (214) is screwed onto the adjustment frame (213). A top block (215) is rotatably installed at the end of the screw (214).

3. The dustproof electric drill with a dust cover according to claim 1, characterized in that: The slag collection bin (26) is equipped with a first elastic band (27) and a second elastic band (28) installed at an angle, with the first elastic band (27) and the second elastic band (28) located on opposite sides.

4. The dustproof electric drill with a dust cover according to claim 3, characterized in that: The inclined width of the first elastic band (27) and the second elastic band (28) is not less than half the width of the slag collection bin (26).

5. The dustproof electric drill with a dust cover according to claim 3, characterized in that: The free ends of the first elastic band (27) and the second elastic band (28) are both equipped with fixed rods (29). A threaded rod (210) is screwed onto the collection box (21). A guide frame (211) is rotatably connected to the threaded rod (210). The guide frame (211) slides in the slag collection bin (26) and is fixedly connected to the fixed rod (29).

6. The dustproof electric drill with a dust cover according to claim 1, characterized in that: The drill chuck (3) includes a sleeve (31), a collet (32) and a top ring (33). The top ring (33) is adapted to the sleeve (31). A limit ring (34) is provided inside the sleeve (31). Several limit blocks (35) are fixedly connected to the limit ring (34). A limit groove (36) is opened on the collet (32). The limit ring (34) is inserted into the limit groove (36). The collet (32) has a limiting hole (37), the limiting block (35) is inserted into the limiting hole (37), the sleeve (31) is screwed with an adjusting sleeve (38), the inner side of the adjusting sleeve (38) is provided with an adjusting groove (39), a number of adjusting blocks (311) are fixedly installed on the top ring (33), the adjusting blocks (311) pass through the sleeve (31) and are inserted into the adjusting groove (39), and the top ring (33) is provided with an inclined surface (312).

7. The dustproof electric drill with a dust cover according to claim 6, characterized in that: The sleeve (31) is provided with a plurality of positioning holes (313); A positioning rod (46) is fixedly installed inside the support cylinder (41), and the positioning rod (46) is inserted into the positioning hole (313).

8. The dustproof electric drill with a dust cover according to claim 1, characterized in that: The center height of the air intake side of the support cylinder (41) is greater than the edge height, forming an inclined surface.

9. The dustproof electric drill with a dust cover according to claim 1, characterized in that: A baffle (47) is fixedly installed on the support cylinder (41), and the outer diameter of the baffle (47) is larger than the inner diameter of the outer ring of the bearing (5).

10. The dustproof electric drill with a dust cover according to any one of claims 1-9, characterized in that: The splash guard (22) is made of transparent material.

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