Handheld electric drill splash-proof structure
By designing anti-splash and limit connection mechanisms on the handheld lithium drill, the problem of debris and dust splashing during drilling is solved, thereby improving safety and depth control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG DONGLI ELECTRIC APPLIANCE CO LTD
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-03
AI Technical Summary
Existing handheld lithium-ion drills cannot effectively protect against flying debris and dust during drilling operations, and they also cannot control the drilling depth.
A splash-proof structure for electric drills, including a splash-proof mechanism and a limiting connection mechanism, was designed. The splash-proof mechanism intercepts debris and dust through a ring-shaped water curtain, while the limiting connection mechanism controls the drilling depth through a limiting rod and a scale.
It effectively prevents debris and dust from splashing, improves operational safety, and enables precise control of drilling depth.
Smart Images
Figure CN224444669U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drilling equipment technology, and in particular to a splash-proof structure for a handheld electric drill. Background Technology
[0002] With the increasing demand for power tools in industrial production and daily life, handheld electric drills, as a common tool, are widely used in many fields such as construction, home decoration, and maintenance. During the use of handheld electric drills, drilling operations are carried out by drilling through a high-speed rotating drill bit. However, in some working environments, the debris or splashed substances generated by the high-speed rotation of the drill bit can easily cause injury to the operator or pollute the surrounding environment.
[0003] Existing handheld lithium-ion drills adjust their speed using a speed control head. After speed adjustment, the chuck carries the drill bit to drill a hole. However, during drilling, the rotation of the drill bit easily kicks up a lot of dust, which not only makes it difficult for the user to breathe, but also results in poor horizontality during drilling, which can easily lead to misalignment, causing the drilled groove to become skewed and unusable.
[0004] The existing patent (publication number: CN217070849U) discloses a handheld lithium-ion drill with protective function, including a drill speed control head. A drill chuck is rotatably connected to one side of the drill speed control head. The drill chuck holds the drill body at the end away from the drill speed control head. A backing plate is inserted and fixed to the outer wall of the drill speed control head. A T-shaped groove is carved on both sides of the backing plate. A magnet is provided at both ends of the inner wall of the T-shaped groove. By using a second U-shaped frame and a first U-shaped frame sleeved on one end of the drill chuck and the drill body, the dust kicked up by the drill body when rotating and drilling can be shielded to a certain extent, preventing dust from spreading and effectively providing protection. The dust collection plates on the first and second U-shaped frames can collect dust through the rotation of the double-headed torsion spring and the connection of the third magnet.
[0005] To address the aforementioned issues, existing patents offer solutions, but these solutions fail to protect against flying debris and dust during drilling operations, and also fail to control the drilling depth.
[0006] Therefore, a splash-proof structure for handheld electric drills is proposed. Utility Model Content
[0007] The purpose of this utility model is to provide a splash-proof structure for handheld electric drills, which can solve the problems of existing handheld lithium electric drills that cannot protect against flying debris and dust during drilling operations, and also that they cannot control the drilling depth.
[0008] To achieve the above objectives, this utility model provides the following technical solution: a handheld electric drill anti-splash structure, including an electric drill body, a handheld handle is provided on the side wall of the electric drill body, an installation ring is fixedly connected to the side wall of the handheld handle, a shield is provided on one side of the installation ring, an anti-splash mechanism is provided on the inner wall of the shield, and a limit connection mechanism is provided between the shield and the installation ring.
[0009] The anti-splash mechanism includes an annular tube disposed on the inner wall of the shield, multiple nozzles disposed on the side wall of the annular tube, a dripping tube disposed on the side wall of the annular tube, the dripping tube being located above the drill bit of the electric drill body, a corrugated connecting pipe disposed on the side wall of the annular tube, and a miniature delivery pump disposed on the side wall of the electric drill body, the output end of the miniature delivery pump being connected to the corrugated connecting pipe.
[0010] Preferably, the limiting connection mechanism includes a plurality of T-shaped rods disposed on the side wall of the shield, the T-shaped rods being movably connected to the mounting ring, a limiting rod being fixedly connected to the side wall of the shield, the limiting rod being movably connected to the mounting ring, a limiting head being disposed on the side wall of the limiting rod, a limiting screw being disposed in the middle of the limiting head, and a support spring being sleeved on the side wall of the T-shaped rod, the support spring being located between the shield and the mounting ring.
[0011] Preferably, a sealing ring is provided on the side wall of the shield, and a support ring is provided on the side wall of the mounting ring, and the sealing ring and the support ring are movably connected.
[0012] Preferably, the bottom of the shield is provided with a connector, and a collection bottle is installed at the bottom of the connector.
[0013] Preferably, a separator mesh is provided on the top of the collection bottle, and the separator mesh is located between the collection bottle and the connector.
[0014] Preferably, a sealing ring is provided on the side wall of the shield, and multiple folding grooves are formed on the side wall of the sealing ring.
[0015] Preferably, a limiting groove is formed at the top of the limiting rod, and the limiting screw is movably disposed inside the limiting groove.
[0016] Preferably, a scale is embedded on both sides of the limiting rod.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] 1. This application incorporates an anti-splash mechanism. In this process, the shielding cover blocks the debris and dust generated during the operation of the electric drill body, and the conveying ring-shaped water curtain absorbs and prevents splashing of debris and dust, effectively avoiding the splashing of debris and dust during electric drill operation and improving the safety of electric drill operation.
[0019] 2. This application sets up a limiting connection mechanism, which limits the movement range of the shield and thus controls the working depth of the electric drill body. Attached Figure Description
[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0021] Figure 1 This is an overall structural view of the present invention;
[0022] Figure 2 This is a front view of the present invention;
[0023] Figure 3 This is a schematic diagram of the limiting connection mechanism in this utility model;
[0024] Figure 4 This is a schematic diagram of the hand handle and mounting ring in this utility model;
[0025] Figure 5 This utility model Figure 4 A three-dimensional cross-sectional view of point AA.
[0026] Explanation of reference numerals in the attached figures:
[0027] 1. Drill body; 2. Hand handle; 3. Mounting ring; 4. Shield; 5. Anti-splash mechanism; 6. Limiting connection mechanism; 51. Ring tube; 52. Nozzle; 53. Drip tube; 54. Corrugated connecting tube; 55. Miniature delivery pump; 61. T-bar; 62. Limiting rod; 63. Limiting head; 64. Limiting screw; 65. Support spring; 7. Sealing ring; 8. Supporting ring; 9. Connector; 10. Collection bottle; 11. Separator net; 12. Sealing ring; 13. Folding groove; 14. Limiting groove; 15. Scale. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] Please see Figures 1 to 5 This utility model provides a technical solution:
[0030] A handheld electric drill anti-splash structure includes an electric drill body 1, a hand handle 2 provided on the side wall of the electric drill body 1, an mounting ring 3 fixedly connected to the side wall of the hand handle 2, a shield 4 provided on one side of the mounting ring 3, an anti-splash mechanism 5 provided on the inner wall of the shield 4, and a limit connection mechanism 6 provided between the shield 4 and the mounting ring 3.
[0031] The anti-splash mechanism 5 includes an annular pipe 51 disposed on the inner wall of the shield 4, a plurality of nozzles 52 disposed on the side wall of the annular pipe 51, a dripping pipe 53 disposed on the side wall of the annular pipe 51, the dripping pipe 53 being located above the drill bit of the electric drill body 1, a corrugated connecting pipe 54 disposed on the side wall of the annular pipe 51, and a miniature delivery pump 55 disposed on the side wall of the electric drill body 1, the output end of the miniature delivery pump 55 being connected to the corrugated connecting pipe 54.
[0032] Specifically, such as Figure 5 As shown, a connector 9 is provided at the bottom of the shield 4, and a collection bottle 10 is installed at the bottom of the connector 9.
[0033] Specifically, such as Figure 5 As shown, a separator 11 is provided on the top of the collection bottle 10, and the separator 11 is located between the collection bottle 10 and the connector 9.
[0034] Specifically, such as Figure 5 As shown, a sealing ring 12 is provided on the side wall of the shield 4, and multiple folding grooves 13 are provided on the side wall of the sealing ring 12.
[0035] When in use, when the drill body 1 is started, the micro delivery pump 55 operates synchronously, delivering external coolant to the annular pipe 51 through the corrugated connecting pipe 54. After entering the annular pipe 51, the coolant is sprayed out in a zero-point pattern through multiple nozzles 52, forming a 360° annular water curtain on the inner wall of the shield, directly intercepting high-speed debris generated during drilling, and reducing particle diffusion through the adsorption effect of the coolant. Some coolant is precisely dripped through the drip pipe 53 to the contact area between the drill bit and the workpiece, achieving localized cooling and chip removal lubrication, reducing frictional heat accumulation. The shield contacts the workpiece surface through the sealing ring 12, and the grooved structure of the sealing ring 12 allows it to adapt to uneven surfaces. The surface forms a negative pressure chamber to prevent debris from overflowing from the edges. The flexible design of the corrugated connecting pipe 54 allows the shield 4 to move axially with the drilling depth without compromising the seal. After being carried by the water curtain, the splashing debris and mixed droplets flow along the inner wall of the shield 4 to the connector 9. After being filtered by the separator 11, the liquid flows back into the collection bottle 10. In this way, with the cooperation of the anti-splash mechanism 5, the shield 4 shields the debris and dust generated during the operation of the electric drill body 1. The annular water curtain is used to prevent splashing debris and dust, effectively avoiding the splashing of debris and dust during electric drill operation and improving the safety of electric drill operation.
[0036] Specifically, such as Figure 3 As shown, the limiting connection mechanism 6 includes multiple T-shaped rods 61 disposed on the side wall of the shield 4. The T-shaped rods 61 are movably connected to the mounting ring 3. A limiting rod 62 is fixedly connected to the side wall of the shield 4. The limiting rod 62 is movably connected to the mounting ring 3. A limiting head 63 is disposed on the side wall of the limiting rod 62. A limiting screw 64 is disposed in the middle of the limiting head 63. A support spring 65 is sleeved on the side wall of the T-shaped rod 61. The support spring 65 is located between the shield 4 and the mounting ring 3.
[0037] Specifically, such as Figure 3 As shown, a sealing ring 7 is provided on the side wall of the shield 4, and a support ring 8 is provided on the side wall of the mounting ring 3. The sealing ring 7 and the support ring 8 are movably connected.
[0038] Specifically, such as Figure 3 As shown, a limiting groove 14 is provided at the top of the limiting rod 62, and the limiting screw 64 is movably disposed inside the limiting groove 14.
[0039] Specifically, such as Figure 3 As shown, scales 15 are embedded on both sides of the limiting rod 62.
[0040] In use, the T-shaped rod 61 and the support spring 65 support the shield 4. When the drill body 1 is working, as the drill bit of the drill body 1 penetrates deeper into the hole, the support spring 65 is compressed and contracted. The T-shaped rod 61 guides the relative movement between the shield 4 and the drill body 1. By adjusting the different positions of the limiting head 63 on the limiting rod 62, the movement range of the shield 4 is limited, thereby limiting the drilling depth of the drill body 1. The limiting screw 64 is used to adjust the limit between the limiting head 63 and the limiting rod 62. The limiting groove 14 is used to achieve the limiting connection between the limiting head 63 and the limiting rod 62. The sealing ring 7 and the support ring 8 are used to achieve a sealed connection between the drill body 1 and the shield 4. The scale 15 is used to facilitate observation of the limitation on the movement range of the shield 4. Thus, the limiting connection mechanism 6 limits the movement range of the shield 4, thereby controlling the working depth of the drill body 1.
[0041] By adopting the above technical solution, the problems of existing handheld lithium-ion drills being unable to protect against flying debris and dust during drilling operations, as well as being unable to control the drilling depth, have been solved.
[0042] Working Principle: In use, the shield 4 is first placed on the workpiece drilling surface. When the drill body 1 is started, the micro-pump 55 operates synchronously, delivering external coolant to the annular pipe 51 through the corrugated connecting pipe 54. After entering the annular pipe 51, the coolant is sprayed out in a zero-point pattern through multiple nozzles 52, forming a 360° annular water curtain on the inner wall of the shield. This directly intercepts high-speed debris generated during drilling and reduces particle diffusion through coolant adsorption. Part of the coolant is precisely dripped through the drip pipe 53 to the contact area between the drill bit and the workpiece, achieving localized cooling and chip removal lubrication, reducing frictional heat accumulation. The shield contacts the workpiece surface through the sealing ring 12. The grooved structure of the sealing ring 12 allows it to adapt to uneven surfaces, preventing debris from entering the workpiece. As the drill bit of the electric drill body 1 penetrates deeper into the drilling part, the support spring 65 is compressed and contracted. The T-shaped rod 61 guides the relative movement between the shield 4 and the electric drill body 1. By adjusting the different positions of the limiting head 63 on the limiting rod 62, the movement range of the shield 4 is limited, thereby limiting the drilling depth of the electric drill body 1. The limiting screw 64 is used to adjust the limit between the limiting head 63 and the limiting rod 62. In this way, the debris generated during the operation of the electric drill body 1 is shielded, avoiding the problem of debris and dust splashing. At the same time, the limiting connection mechanism 6 limits the movement range of the shield 4, thereby controlling the working depth of the electric drill body 1.
[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A splash guard structure for a hand-held electric drill comprising a drill body (1), characterized in that: A hand handle (2) is provided on the side wall of the electric drill body (1). A mounting ring (3) is fixedly connected to the side wall of the hand handle (2). A shield (4) is provided on one side of the mounting ring (3). An anti-splash mechanism (5) is provided on the inner wall of the shield (4). A limit connection mechanism (6) is provided between the shield (4) and the mounting ring (3). The anti-splash mechanism (5) includes an annular tube (51) disposed on the inner wall of the shield (4), a plurality of nozzles (52) disposed on the side wall of the annular tube (51), a dripping tube (53) disposed on the side wall of the annular tube (51), the dripping tube (53) being located above the drill bit of the electric drill body (1), a corrugated connecting pipe (54) disposed on the side wall of the annular tube (51), a micro-pump (55) disposed on the side wall of the electric drill body (1), and the output end of the micro-pump (55) being connected to the corrugated connecting pipe (54).
2. The anti-splashing structure of a handheld electric drill according to claim 1, wherein: The limiting connection mechanism (6) includes a plurality of T-shaped rods (61) disposed on the side wall of the shield (4). The T-shaped rods (61) are movably connected to the mounting ring (3). A limiting rod (62) is fixedly connected to the side wall of the shield (4). The limiting rod (62) is movably connected to the mounting ring (3). A limiting head (63) is disposed on the side wall of the limiting rod (62). A limiting screw (64) is disposed in the middle of the limiting head (63). A support spring (65) is sleeved on the side wall of the T-shaped rod (61). The support spring (65) is located between the shield (4) and the mounting ring (3).
3. The anti-splashing structure of a handheld electric drill according to claim 1, wherein: A sealing ring (7) is provided on the side wall of the shield (4), and a support ring (8) is provided on the side wall of the mounting ring (3). The sealing ring (7) and the support ring (8) are movably connected.
4. The anti-splashing structure of a handheld electric drill according to claim 1, wherein: The bottom of the shield (4) is provided with a connector (9), and a collection bottle (10) is installed at the bottom of the connector (9).
5. The anti-splatter structure of a hand-held electric drill according to claim 4, wherein: A partition net (11) is provided on the top of the collection bottle (10), and the partition net (11) is located between the collection bottle (10) and the connector (9).
6. The anti-splatter structure for a hand-held electric drill according to claim 1, wherein: A sealing ring (12) is provided on the side wall of the shield (4), and multiple folding grooves (13) are provided on the side wall of the sealing ring (12).
7. The anti-splatter structure for a hand-held electric drill according to claim 2, wherein: The top of the limiting rod (62) has a limiting groove (14), and the limiting screw (64) is movably disposed inside the limiting groove (14).
8. The anti-splashing structure of a handheld electric drill according to claim 2, characterized in that: A scale (15) is embedded on both sides of the limiting rod (62).