A dust-proof hand-held electric drill assembly

Abstract

The present invention relates to the technical field of electric drill auxiliary tools, and discloses a dust-proof hand-held electric drill assembly, including a hand-held electric drill. The top output end of the hand-held electric drill is fixedly connected with a drill chuck. A support sleeve is placed on the top of the drill chuck. A limiting ring is slidably connected to the inner wall of the support sleeve. The operator drills a hole in the roof through the clamping assembly and the support assembly. At this time, the second conical ring is closer to the drilling position of the drill bit. The debris generated by the drill bit drilling will fall on the second conical ring from around the drill bit, making part of the dust away from the drill bit. Then, through the extrusion assembly and the air jet assembly, a blocking air flow is formed. Larger stones and part of the dust are collected through the second conical ring, and another part of the dust is blocked in cooperation with the air flow, effectively preventing the dust from accumulating around the drill bit, avoiding too much dust accumulating around the drill bit, and the centrifugal force generated by the rotation of the drill bit throwing the dust out, resulting in the dust falling on the operator.

Description

Technical Field

[0001] The present invention relates to the technical field of electric drill auxiliary equipment, and specifically relates to a dust-proof hand-held electric drill assembly. Background Art

[0002] A hand-held electric drill is an indispensable electric tool in modern home repairs, creations, and professional construction. Its core function is to drill holes or tighten screws by rotating the drill bit. The main components include: a drill chuck, an output shaft, gears, a rotor, a stator, a housing, and a switch. Among them, when the hand-held electric drill drills holes in the wall, a dust-proof component is often used to block the splashing of dust and prevent the dust from polluting the construction environment.

[0003] Among them, common dust-proof components often use a telescopic sleeve that is sleeved on the drill bit to block the falling of dust. However, there is usually a gap between the telescopic sleeve and the drill bit. When the drill bit drills a vertical hole in the roof, the dust will drop vertically. The dust may act as a filler to fill the gap between the telescopic sleeve and the drill bit. The centrifugal force generated by the rotation of the drill bit may throw the dust out, resulting in dust splashing. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a dust-proof hand-held electric drill assembly, including a hand-held electric drill, and a drill chuck is fixedly connected to the output end at the top of the hand-held electric drill;

[0005] A drilling mechanism, a clamping component is fixedly installed at the top of the drilling mechanism, and a supporting component is rotatably arranged at the top of the drilling mechanism. The clamping component is used for drilling;

[0006] A telescopic mechanism, the telescopic mechanism is installed at the top of the drilling mechanism and is used to facilitate the feeding of the drilling mechanism for drilling; and

[0007] An air-blowing-back mechanism, the air-blowing-back mechanism is located at the top of the drilling mechanism and is used to block the falling of dust;

[0008] A support sleeve is placed at the top of the drill chuck, a limiting ring is slidably connected to the inner wall of the support sleeve, and a second conical ring is slidably connected to the inner wall of the limiting ring;

[0009] Among them, when drilling a hole in the roof with the hand-held electric drill, during the drilling process, the drilling mechanism is attached to the roof through the telescopic mechanism, so that the dust generated by drilling falls into the telescopic mechanism. Finally, an air film is formed through the air-blowing-back mechanism, effectively preventing dust from accumulating around the hand-held electric drill, avoiding too much dust accumulating around the hand-held electric drill, and the centrifugal force generated by the rotation of the hand-held electric drill throwing the dust out, resulting in the dust falling on the operator.

[0010] Preferably, the drilling mechanism includes:

[0011] A clamping component, the outer wall of the clamping component is fixedly arranged with the inner wall of the hand-held electric drill and is used for drilling;

[0012] A support component, the bottom of which is placed on the top of the drill chuck and is used to support the telescopic mechanism;

[0013] Among them, by starting the electric drill, the clamping component drills holes in the roof, and then the support component supports the telescopic mechanism, enabling the telescopic mechanism to smoothly collect the dust generated by the drilling and preventing the dust from splashing.

[0014] Preferably, the telescopic mechanism includes:

[0015] A collection component, which is slidably arranged on the inner wall of the support sleeve and is used to collect the dust generated by the drilling after approaching the drilling position;

[0016] A return component, which is slidably arranged on the inner wall of the limit ring and is used to return the collection component to its original position;

[0017] Among them, when the drilling mechanism drills a hole, the collection component will approach the drilling position to collect the dust falling from the drilling, reducing the dust around the clamping component and avoiding a large amount of dust accumulating around the drilling. When the clamping component rotates, the centrifugal force generated will throw the dust out. When the drill advances, the return component will be squeezed. After the drilling is completed, the collection component is returned to its original position by the return component. Then, the collection component and the return component are perpendicular to the ground to discharge the collected dust.

[0018] Preferably, the back-blowing mechanism includes:

[0019] An extrusion component, which is fixedly arranged at the bottom of the second conical ring and is used to extrude gas;

[0020] An air-jetting component, which is fixedly arranged on the top of the support component and is used to jet gas;

[0021] Among them, when the drilling mechanism advances during drilling, the extrusion component will be squeezed to extrude gas, which enters the air-jetting component and is jetted around the clamping component through the air-jetting component to form a blocking air flow, blocking the fine dust that is not intercepted by another part of the collection component, effectively preventing the dust from accumulating around the clamping component again during long-term drilling.

[0022] Preferably, the clamping component includes a drill bit fixedly connected to the inner wall of the drill chuck;

[0023] The support component includes a first conical ring fixedly connected to the inner wall of the support sleeve;

[0024] Among them, when drilling a hole in the roof is required, the operator fixes the drill bit through the drill chuck, then sleeves the support sleeve from the outer wall of the drill bit, makes the top of the drill chuck contact the bottom of the support sleeve, and drills a hole in the roof.

[0025] Preferably, the collecting assembly includes an extrusion ring slidably connected to the inner wall of the limit ring. Four arc-shaped connecting blocks are fixedly connected to the inner wall of the extrusion ring, and the side walls of the four arc-shaped connecting blocks are fixedly connected to the outer wall of the second conical ring;

[0026] Among them, when drilling, lift the electric drill so that the extrusion ring fits against the roof. Then start the electric drill to make the drill chuck rotate, driving the drill bit to rotate. Then continuously push the electric drill to move, control the feed speed of the drill bit, make the drill bit contact the roof, and drill the roof. At this time, the second conical ring is relatively close to the drilling position of the drill bit. The debris generated by the drill bit drilling will fall on the outer wall of the second conical ring from around the drill bit. Since the shape of the second conical ring is trumpet-shaped, part of the dust will slide down along the outer wall of the second conical ring. Therefore, the larger stones and part of the dust generated by drilling will fall to the bottom of the second conical ring, keeping part of the dust away from the drill bit.

[0027] Preferably, the return assembly includes a sliding ring slidably connected to the outer wall of the support sleeve. The inner wall of the sliding ring is fixedly connected to the outer wall of the limit ring, and a first return spring is fixedly connected to the bottom of the sliding ring.

[0028] Preferably, the return assembly further includes a second return spring fixedly connected to the bottom of the extrusion ring. The bottom of the second return spring is fixedly connected to the top of the limit ring, and the bottom of the first return spring is fixedly connected to the top of the support sleeve;

[0029] Among them, since the extrusion ring fits against the roof, when the drill bit drills and feeds, the drill chuck will push the support sleeve to move, so that the support sleeve and the first conical ring compress the first return spring, enhancing the return force of the first return spring, which will then push the limit ring to move and compress the second return spring, allowing the second return spring to accumulate return force. Since during the drilling operation, when the drill bit feeds a certain distance, it is usually necessary to retract the drill bit a short distance to discharge the debris in the drill hole. When the electric drill retracts, it will separate from the drill chuck. At this time, the return forces of the second return spring and the first return spring will be released, causing the support sleeve and the sliding ring to return to their positions, and the sliding ring will push the dust inside the second conical ring to vibrate.

[0030] Preferably, the extrusion assembly includes two pneumatic telescopic rods fixedly connected to the top of the first conical ring. The tops of the two pneumatic telescopic rods are fixedly connected to the bottom of the second conical ring, and air pipes are connected through the inner walls of the two pneumatic telescopic rods;

[0031] Among them, the movement of the support sleeve and the first conical ring will drive the pneumatic telescopic rods to move, causing the pneumatic telescopic rods to retract and compress their own gas, and the compressed gas will enter the air pipes.

[0032] Preferably, the jet assembly includes an air collecting groove opened on the inner wall of the first conical ring. Eight air jet pipes are connected through the top of the first conical ring, and ten dust discharge holes are opened on the inner wall of the second conical ring;

[0033] Among them, air flow enters the air jet pipe through the air collecting groove and is ejected from the air jet pipe around the drill bit to form a blocking air flow, which blocks the fine dust that is not intercepted by the other part of the conical ring two. Since the shape of the conical ring one is also trumpet-shaped, the other part of the dust will slide along the conical ring one to the bottom of the conical ring one. The conical ring two collects larger stones and part of the dust, and then cooperates with the air flow to block the other part of the dust, effectively preventing the dust from accumulating around the drill bit, avoiding too much dust accumulating around the drill bit, and the centrifugal force generated by the rotation of the drill bit throwing out the dust, resulting in the dust falling on the operator.

[0034] The present invention has the following beneficial effects:

[0035] (1) When the present invention is in use, the operator drills holes in the roof through the clamping assembly and the supporting assembly. At this time, the conical ring two is relatively close to the drilling position of the drill bit. The debris generated by the drill bit drilling will fall on the conical ring two from around the drill bit, making part of the dust away from the drill bit. Then, through the extrusion assembly and the air jet assembly, a blocking air flow is formed. The conical ring two collects larger stones and part of the dust, and then cooperates with the air flow to block the other part of the dust, effectively preventing the dust from accumulating around the drill bit, avoiding too much dust accumulating around the drill bit, and the centrifugal force generated by the rotation of the drill bit throwing out the dust, resulting in the dust falling on the operator.

[0036] (2) In order to solve the problem that multiple holes usually need to be drilled, and the shape of the conical ring two is trumpet-shaped, which reduces the dust storage capacity and requires dust to be poured multiple times. The relatively fine dust that falls on the conical ring two will fall through multiple dust discharge holes to the bottom of the support sleeve and the conical ring one, reducing the dust stock in the conical ring two. Thus, more dust can be stored in the conical ring two, reducing the number of times of pouring dust, and effectively preventing the need to pour dust multiple times when multiple holes need to be drilled, which affects the drilling efficiency. In addition, by allowing the fine dust to enter the bottom of the conical ring one, larger stones are effectively prevented from entering. If the larger stones come into contact with the blocking air flow, it may damage the blocking air flow and affect the air flow's blocking of the fine dust.

[0037] (3) After the drill bit feeds a certain distance, it usually needs to retreat a small distance to discharge the debris in the drilled hole. When the electric drill retreats, the drill chuck will be separated. Through the return assembly, the support sleeve and the sliding ring are returned. The sliding ring will push the dust inside the conical ring two to vibrate, so that the fine dust in the conical ring two can be smoothly discharged, effectively preventing the larger stones in the conical ring two from blocking the dust discharge holes and affecting the dust from falling into the conical ring one. Description of the Drawings

[0038] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0039] Figure 1 Schematic diagram of the overall structure of the present invention;

[0040] Figure 2 Schematic sectional view of the overall structure of the present invention;

[0041] Figure 3 Schematic sectional view of the support sleeve of the present invention;

[0042] Figure 4 Schematic sectional view of the extrusion ring of the present invention;

[0043] Figure 5 Schematic sectional view of the sliding ring of the present invention;

[0044] Figure 6 Schematic sectional view of the pneumatic telescopic rod of the present invention;

[0045] Figure 7 For the present invention Figure 6 Enlarged schematic view of A in;

[0046] Figure 8 Schematic exploded view of the telescopic mechanism of the present invention.

[0047] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0048] In the figure: 1. Drilling mechanism; 11. Clamping assembly; 12. Support assembly; 111. Electric drill; 112. Drill chuck; 113. Drill bit; 121. Support sleeve; 122. First conical ring; 2. Telescopic mechanism; 21. Collection assembly; 22. Return assembly; 211. Limit ring; 212. Extrusion ring; 213. Second conical ring; 214. Arc connecting block; 221. Sliding ring; 222. First return spring; 223. Second return spring; 3. Back-blowing mechanism; 31. Extrusion component; 32. Jet component; 311. Pneumatic telescopic rod; 312. Air delivery pipe; 321. Air collection groove; 322. Jet pipe; 323. Dust exhaust hole. Detailed implementation manners

[0049] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0050] Example 1. Please refer to Figures 1-5 , the present invention is a dust-proof hand-held drill assembly, including a hand-held drill 111, and a drill chuck 112 is fixedly connected to the top output end of the hand-held drill 111;

[0051] A drilling mechanism 1, a clamping assembly 11 is fixedly installed at the top of the drilling mechanism 1, and a support assembly 12 is rotatably arranged at the top of the drilling mechanism 1. The clamping assembly 11 is used for drilling;

[0052] A telescopic mechanism 2, the telescopic mechanism 2 is installed at the top of the drilling mechanism 1 and is used to facilitate the feeding of the drilling mechanism 1 during drilling; and

[0053] An air-blowing-back mechanism 3, the air-blowing-back mechanism 3 is located at the top of the drilling mechanism 1 and is used to block the falling of dust;

[0054] A support sleeve 121 is placed on the top of the drill chuck 112. A limiting ring 211 is slidably connected to the inner wall of the support sleeve 121, and a conical ring II 213 is slidably connected to the inner wall of the limiting ring 211;

[0055] Among them, the hand-held drill 111 is used to drill holes in the roof. During the drilling process, the telescopic mechanism 2 is attached to the roof, so that the dust generated by drilling falls into the telescopic mechanism 2. Finally, an air film is formed through the air-blowing-back mechanism 3, effectively preventing dust from accumulating around the hand-held drill 111, avoiding a large amount of dust accumulating around the hand-held drill 111, and the centrifugal force generated by the rotation of the hand-held drill 111 throwing the dust out, resulting in the dust falling on the operator.

[0056] The drilling mechanism 1 includes:

[0057] A clamping assembly 11, the outer wall of the clamping assembly 11 is fixedly arranged with the inner wall of the hand-held drill 111 and is used for drilling;

[0058] A support assembly 12, the bottom of the support assembly 12 is placed on the top of the drill chuck 112 and is used to support the telescopic mechanism 2;

[0059] Among them, by starting the hand-held drill 111, the clamping assembly 11 drills holes in the roof, and then the telescopic mechanism 2 is supported by the support assembly 12, so that the telescopic mechanism 2 can smoothly collect the dust generated by drilling and prevent the dust from splashing.

[0060] The telescopic mechanism 2 includes:

[0061] The dust collection component 21 is slidably arranged on the inner wall of the support sleeve 121 and is used to collect the dust generated by drilling after approaching the drilling position.

[0062] The return component 22 is slidably arranged on the inner wall of the limiting ring 211 and is used to return the dust collection component 21 to its original position.

[0063] Among them, when the drilling mechanism 1 drills a hole, the dust collection component 21 will approach the drilling position to collect the dust falling from the drilling, reduce the dust around the clamping component 11, and avoid too much dust accumulating around the drilling. When the clamping component 11 rotates, the centrifugal force generated will throw the dust out. When the drilling feeds, the return component 22 will be squeezed. After the drilling is completed, the return component 22 is used to return the dust collection component 21 to its original position. Then, the dust collection component 21 and the return component 22 are perpendicular to the downward direction to discharge the collected dust.

[0064] The back-blowing mechanism 3 includes:

[0065] The extrusion component 31 is fixedly arranged at the bottom of the second conical ring 213 and is used to extrude gas.

[0066] The air jet component 32 is fixedly arranged at the top of the support component 12 and is used to jet gas.

[0067] Among them, when the drilling mechanism 1 drills and feeds, the extrusion component 31 will be squeezed to extrude gas, which enters the air jet component 32 and jets out around the clamping component 11 through the air jet component 32 to form a blocking air flow, blocking another part of the fine dust that is not intercepted by the dust collection component 21, effectively preventing the dust from accumulating around the clamping component 11 again during long-term drilling.

[0068] Embodiment 2, please refer to Figures 2-8 , The present invention is a dust-proof hand-held electric drill assembly. On the basis of Embodiment 1, the clamping component 11 includes a drill bit 113 fixedly connected to the inner wall of the drill chuck 112;

[0069] The support component 12 includes a first conical ring 122 fixedly connected to the inner wall of the support sleeve 121;

[0070] Among them, when drilling a hole in the roof, the operator fixes the drill bit 113 through the drill chuck 112, and then sleeved the support sleeve 121 from the outer wall of the drill bit 113, so that the top of the drill chuck 112 contacts the bottom of the support sleeve 121 to drill a hole in the roof.

[0071] The dust collection component 21 includes a squeezing ring 212 slidably connected to the inner wall of the limiting ring 211. Four arc-shaped connecting blocks 214 are fixedly connected to the inner wall of the squeezing ring 212, and the side walls of the four arc-shaped connecting blocks 214 are fixedly connected to the outer wall of the second conical ring 213;

[0072] Among them, when drilling, lift the electric hand drill 111 to make the extrusion ring 212 fit with the roof. Then start the electric hand drill 111 to make the drill chuck 112 rotate, driving the drill bit 113 to rotate. Then continuously push the electric hand drill 111 to move, control the feed speed of the drill bit 113, make the drill bit 113 contact with the roof, and drill the roof. At this time, the conical ring two 213 is closer to the drilling position of the drill bit 113. The debris generated by the drill bit 113 drilling will fall on the outer wall of the conical ring two 213 from around the drill bit 113. Since the shape of the conical ring two 213 is trumpet-shaped, part of the dust will slide down along the outer wall of the conical ring two 213. Therefore, the larger stones and part of the dust generated by drilling will fall on the bottom of the conical ring two 213, making part of the dust away from the drill bit 113.

[0073] The return component 22 includes a sliding ring 221 slidably connected to the outer wall of the support sleeve 121. The inner wall of the sliding ring 221 is fixedly connected to the outer wall of the limit ring 211. The bottom of the sliding ring 221 is fixedly connected with a first return spring 222.

[0074] The return component 22 further includes a second return spring 223 fixedly connected to the bottom of the extrusion ring 212. The bottom of the second return spring 223 is fixedly connected to the top of the limit ring 211. The bottom of the first return spring 222 is fixedly connected to the top of the support sleeve 121;

[0075] Among them, since the extrusion ring 212 fits with the roof, when the drill bit 113 drills and feeds, the drill chuck 112 will push the support sleeve 121 to move, making the support sleeve 121 and the conical ring one 122 extrude the first return spring 222, enhancing the return force of the first return spring 222, and then pushing the limit ring 211 to move, extruding the second return spring 223, making the second return spring 223 store the return force. Since during the drilling operation, when the drill bit 113 feeds a certain distance, it is usually necessary to retract the drill bit 113 a small distance to discharge the debris in the drill hole. When the electric hand drill 111 retracts, it will separate from the drill chuck 112. At this time, the return forces of the second return spring 223 and the first return spring 222 will be released, making the support sleeve 121 and the sliding ring 221 return to their positions, and the sliding ring 221 will push the dust inside the conical ring two 213 to vibrate.

[0076] The extrusion component 31 includes two pneumatic telescopic rods 311 fixedly connected to the top of the conical ring one 122. The tops of the two pneumatic telescopic rods 311 are both fixedly connected to the bottom of the conical ring two 213. The inner walls of the two pneumatic telescopic rods 311 are both connected with air pipes 312 in a penetrating manner;

[0077] Among them, when the support sleeve 121 and the conical ring one 122 move, it will drive the pneumatic telescopic rods 311 to move, making the pneumatic telescopic rods 311 retract and extrude their own gas. The extruded gas will enter the air pipe 312.

[0078] The jet component 32 includes an air collecting groove 321 formed on the inner wall of the first conical ring 122. Eight jet pipes 322 are connected through the top of the first conical ring 122 in a penetrating manner. Ten dust discharging holes 323 are formed on the inner wall of the second conical ring 213.

[0079] Among them, the air flow enters the jet pipes 322 through the air collecting groove 321 and is ejected from the jet pipes 322 around the drill bit 113 to form a blocking air flow, which blocks the fine dust that is not intercepted by the other part of the second conical ring 213. Since the shape of the first conical ring 122 is also trumpet-shaped, the other part of the dust will slide along the first conical ring 122 to the bottom of the first conical ring 122. The second conical ring 213 collects larger stones and part of the dust, and cooperates with the air flow to block the other part of the dust, effectively preventing the dust from accumulating around the drill bit 113 and avoiding too much dust accumulating around the drill bit 113. The centrifugal force generated by the rotation of the drill bit 113 throws the dust out, resulting in the dust falling on the operator.

[0080] The quantity of the above components is not limited, and those skilled in the relevant art can freely set it according to actual needs, as long as the above components are installed at the corresponding component connection positions.

[0081] A specific application of this embodiment is as follows: When the present invention is in use, an operator fixes the drill bit 113 through the drill chuck 112, then sleeved the support sleeve 121 from the outer wall of the drill bit 113, making the top of the drill chuck 112 contact with the bottom of the support sleeve 121. When drilling a hole in the roof is required, lift the electric drill 111 to make the extrusion ring 212 fit with the roof, and then start the electric drill 111 to make the drill chuck 112 rotate, driving the drill bit 113 to rotate. Then continuously push the electric drill 111 to move, control the feeding speed of the drill bit 113, make the drill bit 113 contact with the roof, and drill a hole in the roof. At this time, the conical ring two 213 is closer to the drilling position of the drill bit 113. The debris generated by the drill bit 113 drilling will fall on the outer wall of the conical ring two 213 from around the drill bit 113. Since the shape of the conical ring two 213 is trumpet-shaped, part of the dust will slide down along the outer wall of the conical ring two 213. Therefore, the larger stones and part of the dust generated by drilling will fall on the bottom of the conical ring two 213, making part of the dust away from the drill bit 113. When the drill bit 113 feeds, the drill chuck 112 will push the support sleeve 121 and the conical ring one 122 to move, squeezing the return spring one 222, so that the return spring one 222 accumulates resilience. The movement of the conical ring one 122 will drive the pneumatic telescopic rod 311 to move, making the pneumatic telescopic rod 311 retract, squeezing its own gas. The squeezed gas will enter the air delivery pipe 312, enter the air collection groove 321 through the air delivery pipe 312, and make the air flow enter the air spray pipe 322 through the air collection groove 321, and spray out against the surrounding of the drill bit 113 through the air spray pipe 322 to form a blocking air flow, blocking another part of the fine dust not intercepted by the conical ring two 213. Since the shape of the conical ring one 122 is also trumpet-shaped, another part of the dust will slide along the conical ring one 122 to the bottom of the conical ring one 122. The conical ring two 213 collects larger stones and part of the dust, and cooperates with the air flow to block another part of the dust, effectively preventing dust from gathering around the drill bit 113, avoiding too much dust gathering around the drill bit 113, and the centrifugal force generated by the rotation of the drill bit 113 throwing the dust out, resulting in the dust falling on the operator;

[0082] Secondly, to solve the problem that usually multiple holes need to be processed during drilling, and the shape of the conical ring two 213 is trumpet-shaped, resulting in a decrease in the dust storage capacity and the need to pour dust multiple times. The relatively fine dust falling on the conical ring two 213 will fall on the bottom of the support sleeve 121 and the conical ring one 122 through multiple dust discharge holes 323, reducing the dust stock in the conical ring two 213. Thus, more dust can be stored in the conical ring two 213, reducing the number of times of pouring dust, and effectively preventing the need to pour dust multiple times when processing multiple holes, which affects the drilling efficiency. In addition: By making the fine dust enter the bottom of the conical ring one 122, larger stones are effectively prevented from entering. The larger stones contacting the blocking air flow may damage the blocking air flow and affect the air flow blocking the fine dust;

[0083] Secondly, when the support sleeve 121 presses against the first return spring 222, the resilience of the first return spring 222 will be enhanced. When the resilience of the first return spring 222 is enhanced, it will push the sliding ring 221 to move, causing the limit ring 211 to press against the second return spring 223, enabling the second return spring 223 to accumulate resilience. During the drilling operation, after the drill bit 113 advances a certain distance, it is usually necessary to retract the drill bit 113 a short distance to facilitate the discharge of debris in the drill hole. When the electric drill 111 retracts, the drill chuck 112 will be separated. At this time, the resilience of the second return spring 223 and the first return spring 222 will be released, causing the support sleeve 121 and the sliding ring 221 to return to their original positions. The sliding ring 221 will push the dust inside the second conical ring 213 to vibrate, enabling the fine dust inside the second conical ring 213 to be discharged smoothly, effectively preventing larger stones in the second conical ring 213 from blocking the dust discharge hole 323 and affecting the fall of dust into the first conical ring 122.

[0084] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the relevant technical fields can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A dust-proof hand-held electric drill assembly, including a hand-held electric drill (111), wherein a drill chuck (112) is fixedly connected to the output end at the top of the hand-held electric drill (111), and it is characterized in that, It also includes: A drilling mechanism (1), at the top of the drilling mechanism (1), a clamping component (11) is fixedly installed, and at the top of the drilling mechanism (1), a support component (12) is rotatably arranged. The clamping component (11) is used for drilling. A telescopic mechanism (2), the telescopic mechanism (2) is installed at the top of the drilling mechanism (1) and is used to facilitate the feeding of the drilling mechanism (1) during drilling; and An air-blowing-back mechanism (3), the air-blowing-back mechanism (3) is located at the top of the drilling mechanism (1) and is used to block the falling of dust. At the top of the drill chuck (112), a support sleeve (121) is placed. Inside the inner wall of the support sleeve (121), a limiting ring (211) is slidably connected, and inside the inner wall of the limiting ring (211), a second conical ring (213) is slidably connected. Among them, a hand-held electric drill (111) is used to drill holes in the roof. During the drilling process, the telescopic mechanism (2) fits with the roof, so that the dust generated by drilling falls into the telescopic mechanism (2), and finally an air film is formed through the air-blowing-back mechanism (3). The drilling mechanism (1) includes: A clamping component (11), the outer wall of the clamping component (11) is fixedly arranged with the inner wall of the hand-held electric drill (111) and is used for drilling. A support component (12), the bottom of the support component (12) is placed on the top of the drill chuck (112) and is used to support the telescopic mechanism (2). Among them, the roof is drilled through the clamping component (11), and then the telescopic mechanism (2) is supported by the support component (12), so that the telescopic mechanism (2) can smoothly collect the dust generated by drilling and prevent the dust from splashing. The telescopic mechanism (2) includes: A collection component (21), the collection component (21) is slidably arranged on the inner wall of the support sleeve (121) and is used to collect the dust generated by drilling after approaching the drilling position. A return component (22), the return component (22) is slidably arranged on the inner wall of the limiting ring (211) and is used to return the collection component (21). Among them, when the drilling mechanism (1) drills, the collection component (21) will approach the drilling position to collect the dust falling from the drilling. When the drilling feeds, the return component (22) will be squeezed. When the drilling is completed, the collection component (21) is returned through the return component (22). The air-blowing-back mechanism (3) includes: An extrusion component (31), the extrusion component (31) is fixedly arranged at the bottom of the second conical ring (213) and is used to extrude gas. An air-jetting component (32), the air-jetting component (32) is fixedly arranged at the top of the support component (12) and is used to jet gas. Among them, when the drilling mechanism (1) drills and feeds, the extrusion component (31) will be squeezed to extrude gas, which enters the air-jetting component (32), and the air-jetting component (32) jets around the clamping component (11) to form a blocking air flow.

2. The dust-proof hand-held electric drill assembly according to claim 1, wherein: The clamping component (11) includes a drill bit (113) fixedly connected to the inner wall of the drill chuck (112); The support component (12) includes a first conical ring (122) fixedly connected to the inner wall of the support sleeve (121); Among them, when drilling the roof is required, the drill bit (113) is fixed by the drill chuck (112), and then the electric drill (111) is started to rotate the drill bit (113) to drill the roof.

3. The dust-proof hand-held electric drill assembly according to claim 2, characterized in that: The collection assembly (21) includes a pressing ring (212) slidably connected to the inner wall of the limiting ring (211). Four arc-shaped connecting blocks (214) are fixedly connected to the inner wall of the pressing ring (212). The side walls of the four arc-shaped connecting blocks (214) are fixedly connected to the outer wall of the second conical ring (213). Among them, when the drill bit (113) drills, the pressing ring (212) will fit with the roof, making the second conical ring (213) close to the drilling position, and the dust generated by drilling will fall into the second conical ring (213).

4. The dust-proof hand-held electric drill assembly according to claim 3, characterized in that: The return assembly (22) includes a sliding ring (221) slidably connected to the outer wall of the support sleeve (121). The inner wall of the sliding ring (221) is fixedly connected to the outer wall of the limiting ring (211). A first return spring (222) is fixedly connected to the bottom of the sliding ring (221).

5. The dust-proof hand-held electric drill assembly according to claim 4, characterized in that: The return assembly (22) further includes a second return spring (223) fixedly connected to the bottom of the pressing ring (212). The bottom of the second return spring (223) is fixedly connected to the top of the limiting ring (211). The bottom of the first return spring (222) is fixedly connected to the top of the support sleeve (121). Among them, since the pressing ring (212) fits with the roof, when the drill chuck (112) feeds during drilling, the drill chuck (112) will push the support sleeve (121) to move, so that the support sleeve (121) squeezes the first return spring (222), enhancing the return force of the first return spring (222), which will then push the limiting ring (211) to move and squeeze the second return spring (223).

6. The dust-proof hand-held electric drill assembly according to claim 5, characterized in that: The pressing assembly (31) includes two pneumatic telescopic rods (311) fixedly connected to the top of the first conical ring (122). The tops of the two pneumatic telescopic rods (311) are fixedly connected to the bottom of the second conical ring (213). An air delivery pipe (312) is connected through the inner walls of the two pneumatic telescopic rods (311). Among them, when the support sleeve (121) and the first conical ring (122) move, it will drive the pneumatic telescopic rod (311) to move, causing the pneumatic telescopic rod (311) to retract and squeeze its own gas, and the squeezed gas will enter the air delivery pipe (312).

7. The dust-proof hand-held electric drill assembly according to claim 6, characterized in that: The air jet assembly (32) includes an air collection groove (321) opened on the inner wall of the first conical ring (122). Eight air jet pipes (322) are connected through the top of the first conical ring (122). Ten dust discharge holes (323) are opened on the inner wall of the second conical ring (213). Among them, the gas entering the air delivery pipe (312) will enter the air collection groove (321). The gas enters multiple air jet pipes (322) through the air collection groove (321) and is sprayed out around the drill bit (113) to form an air film to block the dust from falling.

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