Dust collection device

Abstract

The present invention relates to a dust collection device, which includes a dust collection main body and a dust collection box inserted into the dust collection main body. The dust collection main body has a joint portion for accommodating the dust collection box. A protruding portion higher than the sealing gasket is provided on the outer surface of one of the buckle plate of the dust collection box and the first side wall of the joint portion, and the other is provided with a clamping groove recessed along the outer surface and matching with the protruding portion. When the dust collection box is inserted towards the dust collection main body, the protruding portion slides along the outer surface of one of the first side wall and the buckle plate, so as to isolate the friction of the first side wall or the buckle plate on the sealing gasket, greatly reducing the physical wear of the sealing gasket, and thus improving the service life of the sealing gasket.

Description

[Technical Field]

[0001] The present invention relates to the technical field of dust collection, and particularly to a dust collection device for use in conjunction with a hand-held power tool. [Background Art]

[0002] Dust collection devices are generally used in combination with power tools. For example, when a power tool is performing a drilling operation, dust and debris are generated. By connecting the dust collection device to the power tool, when the power tool is working, the dust collection device absorbs the dust and debris generated by the power tool to prevent environmental pollution.

[0003] For example, a dust collection device is disclosed in Chinese invention patent CN106926199B. The dust collection device is installed on a power tool. The dust collection device includes a dust collection box and a dust collection main body. A compensation element is provided between the dust collection box and the dust collection main body. The compensation element is movable relative to the ventilation chamber in the dust collection main body, and the compensation element has a sealing element. The sealing element is arranged to seal and connect the dust collection box and the dust collection main body. During the process of the user inserting and pulling out the dust collection box, the sealing gasket continuously rubs against the inner wall of the dust collection main body, resulting in damage to the sealing gasket due to physical wear. This not only reduces the sealing effect between the sealing gasket and the dust collection main body and the dust collection box, but also reduces the service life of the sealing gasket.

[0004] In view of this, it is indeed necessary to provide an improved dust collection device to overcome the defects of the prior art. [Summary of the Invention]

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a dust collection device that can reduce the friction between the sealing gasket and the dust collection main body and improve the service life of the sealing gasket.

[0006] The technical solution adopted by the present invention to solve the problems of the prior art is: a dust collection device, including a dust collection main body and a dust collection box inserted into the dust collection main body. The dust collection main body has a joint portion for receiving the dust collection box and a ventilation chamber located inside the dust collection main body. The joint portion has a first side wall that abuts against the dust collection box, and the first side wall is provided with an opening communicating with the ventilation chamber. The dust collection box has a dust collection base and a buckle plate covering the dust collection base. The buckle plate is provided with a through hole matching the opening, and the through hole communicates with the dust collection box. At least one of the outer surfaces of the buckle plate and the first side wall is provided with a sealing gasket protruding outward.

[0007] One of the outer surfaces of the buckle plate and the first side wall is provided with a protruding portion protruding outward, and the other is provided with a clamping groove recessed along the outer surface and matching the protruding portion.

[0008] When the dust collection box is inserted into the dust collection main body, the protruding portion slides along the outer surface of one of the first side wall and the clamping plate to isolate the friction of the first side wall or the clamping plate on the sealing gasket;

[0009] When the dust collection box is completely inserted into the dust collection main body, the protruding portion is clamped in the engaging groove, and the sealing gasket seals and connects the opening and the through hole.

[0010] A further improvement scheme is that: the sealing gasket and the protruding portion protrude outward from the outer surface of the clamping plate, and the engaging groove is recessed inward from the outer surface of the first side wall.

[0011] A further improvement scheme is that: the dust collection box further includes an elastic gasket sealingly connected between the dust collection seat and the clamping plate. When the dust collection box is inserted into the dust collection main body, the elastic gasket presses the clamping plate toward the dust collection main body.

[0012] A further improvement scheme is that: the clamping plate is pivotally connected to the dust collection seat or detachably connected to the dust collection seat.

[0013] A further improvement scheme is that: the protruding portion is arranged on the outer periphery of the sealing gasket, and the height of the protruding portion is higher than the height of the sealing gasket.

[0014] A further improvement scheme is that: the sealing gasket is quadrilateral, and the four protruding portions are distributed on the outer periphery of the corners of the quadrilateral.

[0015] A further improvement scheme is that: a motor is provided in the ventilation chamber, a filter assembly is accommodated in the dust collection box, the filter assembly is connected to the inner surface of the clamping plate and shields the through hole, the motor generates negative pressure to suck air flow into the dust collection box, and the air flow sequentially passes through the filter assembly, the through hole, the sealing gasket and the opening.

[0016] A further improvement scheme is that: the sealing gasket and the protruding portion protrude outward from the outer surface of the first side wall, and the engaging groove is recessed inward from the outer surface of the clamping plate.

[0017] A further improvement scheme is that: the sealing gasket protrudes outward from the outer surface of the clamping plate, the engaging groove is recessed inward from the outer surface of the clamping plate; the protruding portion protrudes outward from the outer surface of the first side wall.

[0018] A further improvement scheme is that: the sealing gasket protrudes from the outer surface of the first side wall, the engaging groove is recessed inward from the outer surface of the first side wall; the protruding portion protrudes outward from the outer surface of the clamping plate.

[0019] A further improvement solution is as follows: The dust collection device includes a telescopic component for absorbing dust. At least part of the telescopic component is received in the dust collection main body and is slidably connected to the dust collection main body. The telescopic component is communicated with the dust collection box and the ventilation chamber.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] In the present invention, a protruding portion higher than the sealing gasket is provided on the outer surface of one of the buckle plate of the dust collection box and the first side wall of the joint portion, and the other is provided with a clamping groove recessed along the outer surface and matching the protruding portion. When the dust collection box is inserted into the dust collection main body, the protruding portion slides along the outer surface of one of the first side wall and the buckle plate, so that the friction of the first side wall or the buckle plate against the sealing gasket can be isolated, greatly reducing the physical wear of the sealing gasket, and thus improving the service life of the sealing gasket;

[0022] In addition, the present invention provides an elastic gasket between the dust collection base and the buckle plate. During the insertion process of the dust collection box, the protruding portion slides along the outer surface of one of the first side wall and the buckle plate, and the buckle plate can be offset toward the dust collection base side by squeezing the elastic gasket to ensure that the dust collection box can be smoothly pushed into the dust collection main body; and after the dust collection box is pushed into the dust collection main body, the buckle plate makes the sealing gasket and the first side wall tightly fit together through the extrusion force of the elastic gasket, further improving the sealing effect between the buckle plate and the first side wall. [Description of the Drawings]

[0023] The following further describes in detail the specific embodiments of the present invention with reference to the drawings:

[0024] Figure 1 is a perspective view of the dust collection device according to the first embodiment of the present invention installed on a power tool;

[0025] Figure 2 is Figure 1 a sectional view of the dust collection device shown in

[0026] Figure 3 is Figure 1 a perspective view of the separation of the dust collection box and the dust collection main body of the dust collection device shown in

[0027] Figure 4 is a perspective view of the dust collection box of the present invention;

[0028] Figure 5 is a perspective view of the open state of the buckle plate of the dust collection box in the present invention, and the elastic gasket is located on the buckle plate in the figure;

[0029] Figure 6 is a perspective view of the open state of the buckle plate of the dust collection box in the present invention, and the elastic gasket is located on the dust collection base in the figure;

[0030] Figure 7It is a perspective view of the first side wall of the dust collection device and the buckle plate in the present invention. In the figure, the gasket is located on the buckle plate; Figure 8 It is a perspective view of the first side wall of the dust collection device and the buckle plate in the present invention. In the figure, the gasket is located on the first side wall;

[0031] Figure 9 It is a perspective view of the first side wall of the dust collection device and the buckle plate in the second embodiment. In the figure, the gasket is located on the buckle plate;

[0032] Figure 10 It is a perspective view of the first side wall of the dust collection device and the buckle plate in the second embodiment. In the figure, the gasket is located on the first side wall.

[0033] Meanings of the reference numerals in the figure:

[0034] Power tool 200 Drill bit 210

[0035] Dust collection device 100 Dust collection main body 10

[0036] Ventilation chamber 11 Motor 111

[0037] Fan 112 Joint part 12

[0038] First side wall 121 Opening 1211

[0039] Engaging groove 1212, 1212’ Second side wall 122

[0040] Through hole 1221 Dust collection box 20

[0041] Dust collection seat 21 Protrusion 211

[0042] Buckle plate 22 Through hole 221

[0043] Gasket 222 Protruding parts 223, 223’

[0044] Latching part 224 Filter assembly 23

[0045] Filter base 231 Filter net 232

[0046] Elastic pad 24 Air inlet 25

[0047] Clamping part 26 Telescopic assembly 30

[0048] Sliding tube 31 Telescopic tube 32

[0049] Adapter tube 33 Dust suction head 34 [Detailed implementation manners]

[0050] The terms used in the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. For example, the terms indicating orientation or positional relationship such as "upper", "lower", "front", "rear", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0051] Please refer to Figures 1 to 8 Shown is a dust collection device 100 according to a first embodiment disclosed by the present invention. The dust collection device 100 is for being mounted on a power tool 200. In the present embodiment, the power tool 200 is a hammer drill used in occasions such as decoration and chiseling. The power tool 200 includes a transmission assembly installed inside the power tool 200, and a drill bit 210 installed at the front end of the power tool 200 and driven by the transmission assembly. The dust collection device 100 is plugged onto the power tool 200 and absorbs the dust and debris after the drill bit 210 processes.

[0052] The dust collection device 100 includes a dust collection main body 10, a ventilation chamber 11 located inside the dust collection main body 10, a dust collection box 20 plugged onto the dust collection main body 10, and a telescopic assembly 30 at least partially received inside the dust collection main body 10. A motor 111 and a fan 112 coaxially arranged with the motor 111 are provided inside the ventilation chamber 11. The motor 111 drives the fan 112 to rotate, forming a negative pressure inside the ventilation chamber 11, and then absorbing the airflow with dust and debris flowing through the telescopic assembly 30 through the dust collection box 20.

[0053] Please refer to Figure 2 As shown, the telescopic assembly 30 includes a sliding tube 31, a telescopic tube 32, a connecting tube 33, and a dust suction head 34. The sliding tube 31 is slidably supported on the dust collection main body 10. The dust suction head 34 is fixed to the front end of the sliding tube 31. The drill bit 210 passes through the dust suction head 34 for drilling operations. The dust suction head 34 abuts against the surface to be processed and sucks in dust. The connecting tube 33 is fixed inside the dust collection main body 10. The telescopic tube 32 is sleeved on the connecting tube 33. The telescopic tube 32 and the connecting tube 33 are received inside the sliding tube 31. The telescopic assembly 30 telescopically extends and retracts in the processing direction of the power tool 200 to absorb dust and debris at any time.

[0054] Please refer to Figures 2 to 4As shown, the dust collection main body 10 has a joint portion 12 for accommodating the dust collection box 20. The joint portion 12 has a first side wall 121 surrounding the ventilation chamber 11 and a second side wall 122 located below the adapter pipe 33. An opening 1211 communicating with the ventilation chamber 11 is provided at the center of the first side wall 121; a through hole 1221 communicating with the adapter pipe 33 is provided on the second side wall 122. When the dust collection box 20 is inserted into the dust collection main body 10, the upper surface of the dust collection box 20 abuts against the second side wall 122, and the upper surface of the dust collection box 20 has an air inlet 25 matching the through hole 1221. Dust and debris fall into the dust collection box 20 through the telescopic pipe 32, the adapter pipe 33, the through hole 1221, and the air inlet 25.

[0055] The dust collection box 20 has a dust collection base 21, a filter assembly 23, and a buckle plate 22 covering the dust collection base 21. A through hole 221 matching the opening 1211 is provided on the buckle plate 22, and the through hole 221 communicates with the dust collection box 20.

[0056] The filter assembly 23 includes a filter base 231 and a filter net 232 accommodated in the filter base 231. The filter base 231 abuts against the inner surface of the buckle plate 22, and the filter net 232 covers the through hole 221. The filter net 232 is used to filter the air flow passing through the filter net 232 to retain the dust and debris in the air flow in the dust collection box 20.

[0057] Please refer to Figure 5 As shown, one end of the buckle plate 22 is pivotally connected to the dust collection base 21, and a buckle portion 224 extending toward the dust collection base 21 is provided at the other end opposite to the pivotable end. A protrusion 211 is provided on the dust collection base 21. When the buckle plate 22 covers the dust collection base 21, the buckle portion 224 is clamped on the protrusion 211. When the buckle plate 22 is opened, the dust can be further cleaned or the filter assembly 23 can be replaced. Of course, the buckle plate 22 can also be connected to the dust collection base 21 in other detachable ways, for example, in a non-pivotal manner, the buckle plate 22 directly moves linearly to cover the dust collection base 21.

[0058] Please refer to Figure 3 、 Figure 7As shown, a sealing gasket 222 is provided between the buckling plate 22 and the first side wall 121. The sealing gasket 222 is quadrilateral, fixedly provided on the outer surface of the buckling plate 22, and the sealing gasket 222 surrounds the through hole 221. Four outwardly protruding protrusions 223 are provided on the outer surface of the buckling plate 22. The protrusions 223 are distributed on the outer periphery of the four corners of the sealing gasket 222, and the height of the protrusions 223 is higher than that of the sealing gasket 222. The first side wall 121 is provided with a clamping groove 1212 that is concave along the outer surface and matches the protrusion 223. When the dust collection box 20 is inserted into the dust collection main body 10, the protrusion 223 slides along the outer surface of the first side wall 121, isolating the friction between the sealing gasket 222 and the first side wall 121 or the buckling plate 22, reducing the physical wear of the sealing gasket 222, and being beneficial to improving the service life of the sealing gasket 222. When the dust collection box 20 is completely inserted into the dust collection main body 10, the protrusion 223 is clamped in the clamping groove 1212, and the sealing gasket 222 seals and connects the opening 1211 and the through hole 221, preventing air leakage between the dust collection box 20 and the dust collection main body 10 when inhaling air flow. Please refer to Figure 8 As shown, in other embodiments, the sealing gasket 222 can also be provided on the outer surface of the first side wall 121.

[0059] Please refer to Figure 5 As shown, the dust collection box 20 further includes an elastic gasket 24 that is hermetically connected between the dust collection base 21 and the buckling plate 22. The elastic gasket 24 surrounds the outer periphery of the filter base 231. The inner surface of the buckling plate 22 and the side wall of the dust collection base 21 are hermetically connected through the elastic gasket 24, preventing the dust in the dust collection base 21 from leaking out, and also preventing air leakage during the process of inhaling air flow.

[0060] When the dust collection box 20 is completely inserted onto the dust collection main body 10, the elastic gasket 24 presses the buckling plate 22 towards the dust collection main body 10, providing a pressing force between the buckling plate 22 and the first side wall 121, and further improving the sealing performance. In this embodiment, the elastic gasket 24 fits on the inner surface of the buckling plate 22; please refer to Figure 6 As shown, in other embodiments, the elastic gasket 24 can also fit on the dust collection base 21.

[0061] Please refer to Figure 3 As shown, the dust collection box 20 is provided with a pair of clamping portions 26 that extend upward from the bottom wall and are located on both sides of the bottom wall. When the clamping groove 1212 that matches the protrusion 223, the clamping portions 26 are clamped with the dust collection main body 10 to fix the dust collection box 20 on the dust collection main body 10. Then, press the clamping portions 26 to disassemble the dust collection box 20 from the dust collection main body 10 to pour out the dust debris, and the operation is convenient and fast.

[0062] In the present invention, by providing a protruding portion 223 on the outer surface of one of the clamping plate 22 of the dust collection box 20 and the first side wall 121 of the engaging portion 12, the height of the protruding portion 223 is higher than that of the sealing gasket 222, and the other is provided with a clamping groove 1212 that is recessed along the outer surface and engages with the protruding portion 223. When the dust collection box 20 is inserted into the dust collection main body 10, the protruding portion 223 slides along the outer surface of one of the first side wall 121 and the clamping plate 22, so as to isolate the friction between the first side wall 121 or the clamping plate 22 and the sealing gasket 222, greatly reducing the physical wear of the sealing gasket 222, and thus improving the service life of the sealing gasket 222;

[0063] In addition, the present invention provides an elastic pad 24 between the dust collection base 21 and the clamping plate 22. During the insertion process of the dust collection box 20, the protruding portion 223 slides along the outer surface of one of the first side wall 121 and the clamping plate 22, and the clamping plate 22 can be offset toward the dust collection base 21 side by squeezing the elastic pad 24 to ensure that the dust collection box 20 can be smoothly pushed into the dust collection main body 10; after the dust collection box 20 is pushed into the dust collection main body 10, the clamping plate 22 makes the sealing gasket 222 and the first side wall 121 closely fit together through the extrusion force of the elastic pad 24, further improving the sealing effect between the clamping plate 22 and the first side wall 121.

[0064] Please refer to Figure 9 The second embodiment disclosed by the present invention is shown. Compared with the first embodiment, the outer surface of the first side wall 121 is provided with a protruding sealing gasket 222 and four protruding portions 223' located on the outer periphery of the corners of the sealing gasket 222 and protruding outward. The height of the protruding portion 223' is higher than that of the sealing gasket 222, and the clamping plate 22 is provided with a clamping groove 1212' that is recessed along the outer surface and matches the protruding portion 223'. Please refer to Figure 10 As shown, in other embodiments, the sealing gasket 222 can also be provided on the outer surface of the clamping plate 22. By providing a protruding portion 223' on the outer surface of the first side wall 121 of the engaging portion 12, the height of the protruding portion 223' is higher than that of the sealing gasket 222, and the clamping plate 22 is provided with a clamping groove 1212' that is recessed along the outer surface and engages with the protruding portion 223'. When the dust collection box 20 is inserted into the dust collection main body 10, the protruding portion 223' slides along the outer surface of the clamping plate 22, so as to isolate the friction between the first side wall 121 or the clamping plate 22 and the sealing gasket 222, greatly reducing the physical wear of the sealing gasket 222, and thus improving the service life of the sealing gasket 222.

[0065] The present invention is not limited to the above specific embodiments. Those of ordinary skill in the art can easily understand that there are many alternative solutions for the dust collection device of the present invention without departing from the principles and scope of the present invention. The protection scope of the present invention is subject to the content of the claims.

Claims

1. A dust collecting device, comprising a dust collecting body, a dust collecting box plugged into the dust collecting body, the dust collecting body having a joint portion for accommodating the dust collecting box and a ventilation chamber located in the dust collecting body, the joint portion having a first side wall abutting against the dust collecting box, the first side wall having an opening communicating with the ventilation chamber; the dust collecting box having a dust collecting seat, a gusset plate covering the dust collecting seat, the gusset plate having a through hole matching the opening, the through hole communicating with the dust collecting box; characterized in that: The outer surface of at least one of the buckle plate and the first side wall is provided with a sealing gasket protruding outward; The outer surface of one of the buckle plate and the first side wall is provided with a protruding portion protruding outward, and the other is provided with a clamping groove recessed along the outer surface and matching with the protruding portion, and the height of the protruding portion is higher than the height of the sealing gasket; When the dust collection box is inserted toward the dust collection main body, the protruding portion slides along the outer surface of one of the first side wall and the buckle plate to isolate the friction of the first side wall or the buckle plate on the sealing gasket; When the dust collection box is completely inserted into the dust collection main body, the protruding portion is clamped in the clamping groove, and the sealing gasket seals and connects the opening and the through hole.

2. The dust collecting device according to claim 1, characterized in that: The sealing gasket and the protruding portion protrude outward from the outer surface of the buckle plate, and the clamping groove is recessed inward from the outer surface of the first side wall.

3. The dust collecting device according to claim 1, characterized in that: The dust collection box further includes an elastic gasket sealingly connected between the dust collection base and the buckle plate. When the dust collection box is inserted into the dust collection main body, the elastic gasket presses the buckle plate toward the dust collection main body.

4. The dust collecting device according to claim 1, characterized in that: The buckle plate is pivotally connected to the dust collection base or detachably connected to the dust collection base.

5. The dust collecting device according to claim 1, characterized in that: The protruding portion is arranged on the outer periphery of the sealing gasket.

6. The dust collecting device according to claim 5, characterized in that: The sealing gasket is quadrilateral, and the four protruding portions are distributed on the outer periphery of the corners of the quadrilateral.

7. The dust collecting device according to claim 1, characterized in that: A motor is arranged in the ventilation chamber, a filter assembly is accommodated in the dust collection box, the filter assembly is connected to the inner surface of the buckle plate and shields the through hole, the motor generates negative pressure to suck air flow from the dust collection box, and the air flow sequentially passes through the filter assembly, the through hole, the sealing gasket and the opening.

8. The dust collecting device according to claim 1, characterized in that: The sealing gasket and the protruding portion protrude outward from the outer surface of the first side wall, and the clamping groove is recessed inward from the outer surface of the buckle plate.

9. The dust collecting device according to claim 1, characterized in that: The sealing gasket protrudes outward from the outer surface of the buckle plate, and the clamping groove is recessed inward from the outer surface of the buckle plate; The protruding portion protrudes outward from the outer surface of the first side wall.

10. The dust collecting device according to claim 1, characterized in that: The sealing gasket protrudes from the outer surface of the first side wall, and the clamping groove is recessed inward from the outer surface of the first side wall; the protruding portion protrudes outward from the outer surface of the buckle plate.

11. The dust collecting device according to any one of claims 1 to 10, characterized in that: The dust collection device includes a telescopic assembly for absorbing dust. The telescopic assembly is at least partially accommodated in the dust collection main body and is slidably connected to the dust collection main body. The telescopic assembly is communicated with the dust collection box and the ventilation chamber.

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