Handheld dustproof electric drill

Abstract

The handheld dustproof electric drill comprises an electric drill body and a dust collection suite arranged at the front end of the electric drill body, a drill chuck shell is arranged at the front end of the electric drill body, a plurality of positioning grooves are distributed in the surface of the front end of the drill chuck shell, and a buckle ring is arranged on the surface of the rear end of the drill chuck shell. The drill chuck shell is detachably provided with a dust collection suite through the positioning grooves and the buckle rings, the dust collection suite comprises a mounting ring, a rotating sleeve and a dust collection sleeve, a plurality of guide strips matched with the positioning grooves are distributed on the inner wall of the mounting ring in the circumferential direction, and the rear end of the mounting ring horizontally extends to be provided with a plurality of buckle strips fixed to the buckle rings in a clamped mode; a rotating sleeve is rotationally arranged outside the mounting ring; first supporting plates are arranged on the outer wall of the rotating sleeve, a dust collecting sleeve sleeves the outer wall of the front end of the rotating sleeve, a dust collecting opening is formed in the front end of the dust collecting sleeve, guide grooves are transversely formed in the positions, located on the first supporting plates, of the rear end of the outer wall of the dust collecting sleeve, and second supporting plates are arranged at the positions, located at the front ends of the guide grooves, of the outer wall of the dust collecting sleeve. The second supporting plate and the first supporting plate are elastically connected through the elastic connecting piece, the connecting structure between the dust collection kit and the electric drill body is more stable, and the problems of loosening, disengaging and the like are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric drills, and particularly relates to a handheld dust-proof electric drill. Background Art

[0002] During the use of the existing electric hand drill, a dust-proof cover is sleeved at the drill bit position to collect dust and prevent dust from escaping everywhere. When the traditional dust-proof cover is used, it is generally fixed on the wall to be drilled by gluing first, and then the drill bit passes through the dust-proof cover for drilling operation. However, during the drilling process, the drill bit will cause the dust-proof cover to fall off due to vibration, thus affecting the normal collection of dust. Chinese patent document: CN202122591831.9 discloses a power tool with a dust-proof function. In this application, the storage frame is connected to the electric drill housing by a threaded connection. One end of the storage frame is elastically connected to a sliding block, and the sliding block is used to collect dust. The front end of the sliding block structure in this application is a flat structure, so that once it tilts, the dust will fall, resulting in poor dust collection. And the connection with the housing using a threaded structure will cause the connection to loosen due to the vibration of the electric drill, ultimately affecting the connection stability. Content of the Utility Model

[0003] The main purpose of the utility model is to provide a handheld dust-proof electric drill, which solves the problems that the dust collection kit on the existing electric drill cannot effectively collect dust and the connection stability between the dust collection kit and the electric drill is poor.

[0004] The specific technical solution is as follows:

[0005] A handheld dust-proof electric drill, comprising an electric drill body and a dust collection kit arranged at the front end of the electric drill body. A drill chuck housing is provided at the front end of the electric drill body. A plurality of positioning grooves are evenly distributed along the circumferential direction on the front end surface of the drill chuck housing, and the positioning grooves are all arranged along the axial direction. A snap ring is provided on the rear end surface of the drill chuck housing, and the dust collection kit is detachably installed on the drill chuck housing through the positioning grooves. The dust collection kit includes an installation ring, a rotating sleeve and a dust collection sleeve. A plurality of guiding strips adapted to the positioning grooves are circumferentially distributed on the inner wall of the installation ring. A plurality of snap strips are horizontally extended at the rear end of the installation ring and are snap-fitted and fixed with the snap ring. The rotating sleeve is rotatably arranged on the outer side of the installation ring. A baffle is provided at the front end of the rotating sleeve, and a through hole for the drill bit to penetrate is opened in the center of the baffle. A plurality of first support plates are arranged along the circumferential direction on the outer wall of the rotating sleeve. The dust collection sleeve is sleeved on the front end outer wall of the rotating sleeve. A dust collection port is opened at the front end of the dust collection sleeve. A plurality of guiding grooves are horizontally opened at the rear end of the outer wall of the dust collection sleeve at the position of each first support plate, and a second support plate is respectively provided at the front end of the outer wall of the dust collection sleeve at the position of each guiding groove. The second support plate and the first support plate are elastically connected by an elastic connecting member.

[0006] Further, a card slot for clamping connection with the snap ring is provided on the inner side of the snap strip. When the snap strip is fixedly clamped with the snap ring, one end of the guide strip abuts against one end of the positioning slot.

[0007] Further, a dial is provided on the outer wall at the rear end of the snap strip.

[0008] Further, a plurality of ball grooves are circumferentially distributed on the outer wall of the mounting ring. Ball bearings are provided in the ball grooves. The ball bearings abut against the inner wall of the rotating sleeve. And limiting rings are respectively provided at the front and rear ends of the mounting ring on the inner wall at the rear end of the rotating sleeve to achieve limiting, so that the rotating sleeve is rotatably connected with the mounting ring.

[0009] Further, the elastic connecting member includes a guide rod and a spring. One end of the guide rod is fixed on the second support plate, and the guide rod is horizontally arranged. The other end of the guide rod penetrates through the first support plate and is provided with a limiting bolt, and the guide rod is slidably connected with the first support plate. A spring is sleeved on the guide rod, and both ends of the spring are respectively pressed against the first support plate and the second support plate to support the dust collection sleeve.

[0010] Further, the front end of the outer wall of the dust collection sleeve is tapered and contracted.

[0011] Further, the front end baffle of the rotating sleeve is tapered and protrudes forward at the position of the through port.

[0012] The beneficial effects of the present utility model are embodied in:

[0013] (1) In the present utility model, the drill chuck housing is detachably installed with the dust collection kit through the positioning slot and the snap ring. The snap strip is clamped with the snap ring and under the limiting action of the guide strip and the positioning slot, the mounting ring is fixed to the drill chuck housing, and the overall connection structure is more stable, avoiding problems such as loosening and detachment.

[0014] (2) The dust collection sleeve is elastically connected with the rotating sleeve through the guide rod and the spring, and the front end of the outer wall of the dust collection sleeve is contracted and the dust is collected through the dust collection port, effectively avoiding the problem that the dust accumulates at the dust collection port and is likely to fall due to the inclination of the electric drill, ensuring the dust collection quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural view of the present utility model.

[0016] Figure 2 is an internal structural view of the dust collection kit in the present utility model.

[0017] Figure 3 is a front view of the dust collection kit in the present utility model.

[0018] Figure 4 is a schematic structural view of the electric drill body after removing the dust collection kit in the present utility model.

[0019] Description of reference numerals: electric drill body 1, drill chuck housing 2, positioning groove 21, snap ring 22, drill bit 3, dust collection kit 4, mounting ring 41, ball groove 411, ball 412, guide bar 413, snap strip 414, dial block 415, rotating sleeve 42, first support plate 421, baffle 422, through port 423, limiting ring 424, dust collection sleeve 43, second support plate 431, dust collection port 432, guide groove 433, elastic component 44, guide rod 441, limit bolt 442, spring 443, storage cavity 45. Detailed implementation manners

[0020] To make the technical solution of the present utility model clearer and more definite, the present utility model will be further described below with reference to the accompanying drawings. Any solution obtained by equivalent replacement of the technical features of the technical solution of the present utility model and conventional reasoning falls within the protection scope of the present utility model. The fixed connection and fixed setting mentioned in the present utility model are all common connection methods in the mechanical field, and welding, bolt-nut connection and screw connection are all applicable.

[0021] In the description of the present creation of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present creation of the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0022] As Figures 1-4As shown in the figure, this embodiment provides a handheld dust-proof electric drill, including an electric drill body 1 and a dust collection kit 4 arranged at the front end of the electric drill body. A drill chuck housing 2 is provided at the front end of the electric drill body. A drill bit 3 is fixed in the drill chuck housing 2. A plurality of positioning grooves 21 are evenly distributed along the circumferential direction on the front end surface of the drill chuck housing 2. The positioning grooves 21 are all arranged axially. A raised snap ring 22 is provided on the rear end surface of the drill chuck housing 2. The dust collection kit 4 is detachably installed on the drill chuck housing 2 through the positioning grooves 21 and the snap ring 22. The dust collection kit 4 includes an installation ring 41, a rotating sleeve 42 and a dust collection sleeve 43. A plurality of guide strips 413 adapted to the positioning grooves 21 are circumferentially distributed on the inner wall of the installation ring 41. A plurality of snap strips 414 that are snap-fixed to the snap ring 22 extend horizontally at the rear end of the installation ring 41. The front end surface of the snap ring 22 is inclined to facilitate the snap-fixation of the snap strip 414 and the snap ring 22. The rotating sleeve 42 is rotatably arranged outside the installation ring 41. A baffle 422 is provided at the front end of the rotating sleeve 42. A through hole 423 for the drill bit 3 to pass through is opened in the center of the baffle 422. And the position of the front end baffle 422 of the rotating sleeve 42 at the through hole 423 is arranged as a forwardly convex conical surface to prevent dust from entering the rotating sleeve 42 through the through hole 423. A plurality of first support plates 421 are arranged along the circumferential direction on the outer wall of the rotating sleeve 42. The dust collection sleeve 43 is sleeved on the front end outer wall of the rotating sleeve 42. The inner wall of the dust collection sleeve 43 is attached to the outer wall of the rotating sleeve 42, so that a storage cavity 45 for collecting dust is formed between the inner side of the dust collection sleeve 43 and the front end baffle 422 of the rotating sleeve 42. The front end outer wall of the dust collection sleeve 43 is arranged in a conical surface contraction. And a dust collection port 432 is opened at the center of the front end side wall of the dust collection sleeve 43. The conical surface structure enables the dust to directly fall into the storage cavity 45, avoiding the problem that the dust is easily disengaged due to accumulation at the dust collection port 432.

[0023] In this embodiment, a plurality of guide grooves 433 are horizontally opened at the position of each first support plate 421 on the rear end outer wall of the dust collection sleeve 43. The front end position of the guide grooves 433 does not exceed the front end of the rotating sleeve 42 to prevent dust from leaking. And a second support plate 431 is respectively provided at the front end of each guide groove 433 on the outer wall of the dust collection sleeve 43. The second support plate 431 and the first support plate 421 are elastically connected by an elastic connecting member. A dial block 415 is provided on the rear end outer wall of the snap strip 414. The dial block 415 facilitates the separation of the snap strip 414 from the snap ring 22, so as to facilitate the disassembly of the dust collection kit 4 for cleaning.

[0024] In this embodiment, a clamping groove that is clamped with the snap ring 22 is provided on the inner side of the snap strip 414. When the snap strip 414 is snap-fixed to the snap ring 22, one end of the guide strip 413 abuts against one end of the positioning groove 21, thereby realizing the positioning function and avoiding movement.

[0025] In this embodiment, a plurality of ball grooves 411 are circumferentially distributed on the outer wall of the mounting ring 41. Ball bearings 412 are arranged in the ball grooves 411. The ball bearings 412 are in contact with the inner wall of the rotating sleeve 42. Limit rings 424 are respectively arranged at the front and rear ends of the mounting ring 41 on the inner wall of the rear end of the rotating sleeve 42 to achieve limitation, so as to realize the rotational connection between the rotating sleeve 42 and the mounting ring 41.

[0026] In this embodiment, the elastic connecting member includes a guide rod 441 and a spring 443. One end of the guide rod 441 is fixed on the second support plate 431, and the guide rod 441 is horizontally arranged. The other end of the guide rod 441 penetrates through the first support plate 421 and is provided with a limit bolt 442, and the guide rod 441 is slidably connected with the first support plate 421. A spring 443 is sleeved on the guide rod 441. The two ends of the spring 443 are respectively pressed against the first support plate 421 and the second support plate 431 to support the dust collecting sleeve 43.

[0027] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A handheld dust-proof electric drill, comprising an electric drill body (1) and a dust collection kit (4) arranged at the front end of the electric drill body. The front end of the electric drill body is provided with a drill chuck housing (2), and it is characterized in that, On the front-end surface of the drill chuck housing (2), a number of positioning grooves (21) are evenly distributed circumferentially. The positioning grooves (21) are all arranged axially. On the rear-end surface of the drill chuck housing (2), a snap ring (22) is provided. And the drill chuck housing (2) detachably installs the dust collection kit (4) through the positioning grooves (21) and the snap ring (22). The dust collection kit (4) includes an installation ring (41), a rotating sleeve (42), and a dust collection sleeve (43). On the inner wall of the installation ring (41), a number of guiding strips (413) adapted to the positioning grooves (21) are distributed circumferentially. At the rear end of the installation ring (41), a number of snap strips (414) that are snap-fitted and fixed to the snap ring (22) extend horizontally. The rotating sleeve (42) is rotatably arranged outside the installation ring (41). At the front end of the rotating sleeve (42), a baffle (422) is provided. In the center of the baffle (422), a through opening (423) for the drill bit (3) to penetrate is provided. On the outer wall of the rotating sleeve (42), a number of first support plates (421) are arranged circumferentially. The dust collection sleeve (43) is sleeved on the front-end outer wall of the rotating sleeve (42). At the front end of the dust collection sleeve (43), a dust collection port (432) is provided. At the position of each first support plate (421) at the rear end of the outer wall of the dust collection sleeve (43), a number of guiding grooves (433) are horizontally provided. And on the outer wall of the dust collection sleeve (43), at the front end of each guiding groove (433), a second support plate (431) is respectively provided. The second support plate (431) and the first support plate (421) are elastically connected by an elastic connecting member.

2. The hand-held dust-proof electric drill according to claim 1, characterized in that, On the inner side of the snap strip (414), a clamping groove that is snap-fitted with the snap ring (22) is provided. When the snap strip (414) is snap-fitted and fixed to the snap ring (22), one end of the guiding strip (413) abuts against one end of the positioning groove (21).

3. The hand-held dust-proof electric drill according to claim 2, characterized in that, On the rear-end outer wall of the snap strip (414), a dial block (415) is provided.

4. A handheld dust-proof electric drill according to claim 1, characterized in that, On the outer wall of the installation ring (41), a number of ball grooves (411) are distributed circumferentially. In the ball grooves (411), balls (412) are provided. The balls (412) abut against the inner wall of the rotating sleeve (42). And at the front and rear ends of the installation ring (41) on the inner wall of the rear end of the rotating sleeve (42), limit rings (424) are respectively provided to achieve limitation, so that the rotating sleeve (42) and the installation ring (41) are rotationally connected.

5. A handheld dust-proof electric drill according to claim 1, characterized in that, The elastic connecting member includes a guide rod (441) and a spring (443). One end of the guide rod (441) is fixed to the second support plate (431). And the guide rod (441) is horizontally arranged. The other end of the guide rod (441) penetrates through the first support plate (421) and is provided with a limit bolt (442). And the guide rod (441) is slidably connected with the first support plate (421). A spring (443) is sleeved on the guide rod (441). The two ends of the spring (443) respectively abut against the first support plate (421) and the second support plate (431).

6. The hand-held dust-proof electric drill according to claim 1, characterized in that, The front-end outer wall of the dust collection sleeve (43) is arranged to be tapered and contracted.

7. The hand-held dust-proof electric drill according to claim 1, characterized in that, At the position of the through opening (423) on the front-end baffle (422) of the rotating sleeve (42), it is arranged as a conical surface that bulges forward.

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