Angle grinder with dustproof assembly

Abstract

According to the angle grinder with the dustproof assembly, the connecting rod is arranged on the handle of the angle grinder, the connecting cover is movably connected with the connecting rod through the plug pin, and the connecting cover is fixedly connected with the dust collecting pipe and the collecting box, so that the dust collecting pipe and the collecting box are convenient to assemble and disassemble; when the cutting depth of the pressing plate is increased along with the angle grinder, the second rack and the pressing plate move upwards relatively, the first rack moves downwards, and the pipe opening of the dust collecting pipe is enlarged through the first rack; by the adoption of the technical scheme, the structure is simple, the cost is 24 low, the situation that the throwing angle of dust and chippings is unstable due to the change of the cutting depth of the angle grinder can be effectively adapted, and the dust and chipping collecting efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of angle grinder equipment, in particular to an angle grinder with a dustproof component. Background Art

[0002] Angle grinder, also known as grinding machine or disc grinder, is a portable electric tool that uses fiberglass for cutting and grinding. It is mainly used for cutting, grinding and brushing metal and stone. When the angle grinder is in use, after the angle grinder is powered on, the staff holds the angle grinder and starts the angle grinder by switching on the switch. The grinding wheel rotates to grind or cut the object, and the grinding wheel has different shapes to meet the use of different scenarios.

[0003] Most of the current solutions are to use a device with a suction pump to suck away the dust generated during the cutting process. However, this method requires additional electrical equipment to run the suction pump, which is costly. On the other hand, it requires wires and pipes to connect, which affects the convenience of moving the angle grinder. However, when cutting metal pipes or thicker wood, as the grinding wheel goes deeper, the range of dust diffusion will be larger, and the direction of dust ejection will shift before and after cutting, and the amount of dust will also increase. In particular, when cutting metal pipes, a large amount of metal debris will be generated instead of dust. It has the characteristics of fast ejection speed and heavier weight than dust. The suction force of the small suction pump will prevent many larger debris from being sucked. In addition, there is also a method of fixing a dustproof pipe under the protective cover of the angle grinder, taking advantage of the characteristics of fast and far ejection of metal debris, and collecting the debris and dust directly in the dustproof pipe, which is low cost. However, the nozzle of the dustproof pipe is fixed, and it cannot adapt to the situation where the ejection angle changes and shakes with the change of cutting depth.

[0004] The Chinese invention patent with application number CN202011122513.1 discloses a dust cover for an angle grinder, including a dust cover, a fixing part fixed to the dust cover by a fastener, and a dust outlet pipe connected to the dust cover, and an L-shaped support frame including a horizontal section movably connected to the slide groove of the support frame and a vertical section perpendicular to the horizontal section. The cutting cover can adjust the cutting depth of the angle grinder, wherein the grinding cover can also grind the inner corner, and dust is sucked by dust suction. However, when cutting thicker objects, the dust suction effect of this solution will still be reduced after the dust ejection angle changes. Utility Model Content

[0005] The purpose of the utility model is to address the deficiencies in the above-mentioned technology and to propose an angle grinder with a dustproof component, aiming to solve the problem that when cutting metal pipes, as the grinding wheel goes deeper, the debris is heavier than the powder and the projection speed is fast, and the projection angle changes, it is difficult to collect.

[0006] The utility model provides an angle grinder with a dustproof component, including an angle grinder and a handle thereof, wherein the handle is movably connected to a dust collecting pipe for collecting dust and debris on one side close to the grinding wheel of the angle grinder, a first rack for adjusting the size of the dust collecting pipe mouth is fixedly connected to the edge of one end of the dust collecting pipe, a collection box for storing dust and debris is fixedly connected to the other end of the dust collecting pipe, and the first rack is meshed with a linkage mechanism for lifting and lowering the first rack as the cutting depth of the angle grinder changes, so that the mouth of the dust collecting pipe becomes larger as the cutting of the angle grinder deepens and becomes smaller as the cutting depth of the angle grinder becomes shallower. By setting a linkage mechanism to drive the lifting and lowering movement of the first rack, the mouth of the dust collecting pipe is driven to become larger or smaller as the cutting depth of the angle grinder changes, thereby effectively improving the dust collection efficiency of the dust collecting pipe, and at the same time, the cost is low, and it can effectively adapt to the change of the projection angle of the angle grinder as the cutting depth changes.

[0007] Preferably, the dust collecting pipe comprises an upper shell, a lower shell and a telescopic plate, one end of the telescopic plate is fixedly connected to the upper shell, the other end of the telescopic plate is fixedly connected to the lower shell, and one end of the first rack is fixedly connected to the edge of the lower shell away from the collecting box. An opening and closing plate is hinged on the side wall of the collecting box, and the opening and closing plate is interference fit with the collecting box. By setting the telescopic plate, the distance between the upper shell and the lower shell can be reduced or increased, that is, the nozzle of the dust collecting pipe can be reduced or increased.

[0008] Preferably, the linkage mechanism includes a gear, a second rack and a pressure plate, the gear is located between the second rack and the first rack, and the gear is meshed with the first rack and the second rack, the second rack is fixedly connected to the pressure plate at one end close to the dust collecting pipe, and the pressure plate is parallel to the handle. A support rod is fixedly connected to the side of the second rack close to the pressure plate, and the other end of the support rod is fixedly connected to the pressure plate. By setting the gear, the movement directions of the second rack and the first rack are opposite, when the pressure plate rises, the second rack rises, the first rack falls, and the dust collecting pipe opening becomes larger.

[0009] Preferably, it also includes a connecting cover and a through hole, the bottom wall of the connecting cover is fixedly connected to the edge of the upper shell, the through hole is opened on the top wall of the connecting cover, the first rack and the second rack pass through the two through holes respectively, and the central axis of the gear is fixedly connected to the inner wall of the connecting cover. A connecting rod is movably connected to the side of the connecting cover close to the handle, and the other end of the connecting rod is fixedly connected to the handle of the angle grinder. A sliding groove is opened on the side of the connecting cover close to the connecting rod, and a sliding plate is fixedly connected to the end of the connecting rod, and the sliding plate slides in the sliding groove.

[0010] Preferably, it also includes a limit hole, a latch, a limit plate and a protrusion, the latch is movably inserted into the limit hole, the limit plate and the protrusion are respectively fixed to the two ends of the latch, the protrusion is interference fit with the limit hole, and the latch limits the movement of the connecting rod. The latch is provided to facilitate the disassembly and fixation of the connecting cover.

[0011] Compared with the prior art, it has the following beneficial effects:

[0012] The utility model provides an angle grinder with a dustproof component, by arranging a connecting rod on the handle, and a connecting cover is movably connected to the connecting rod through a pin, and the connecting cover is fixedly connected to the dust collecting pipe and the collecting box, so that the installation and disassembly of the dust collecting pipe and the collecting box are convenient, and by arranging a second rack, a first rack and a pressure plate, when the pressure plate becomes deeper as the cutting depth of the angle grinder increases, the second rack and the pressure plate move upward relatively, and the first rack moves downward, and the first rack enlarges the pipe mouth of the dust collecting pipe; adopting the above technical scheme, the structure is simple and the cost is low, and it can effectively adapt to the situation that the projection angle of dust and debris is unstable due to the change of cutting depth of the angle grinder, and effectively improve the dust and debris collection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 It is a schematic diagram of an angle grinder with a dustproof component according to the utility model;

[0015] Figure 2 It is a schematic diagram of the dust collecting pipe, the pressing plate and the collecting box of the utility model;

[0016] Figure 3 It is an axial view of the linkage mechanism of the utility model;

[0017] Figure 4 It is a schematic diagram of the dust collecting pipe and the first rack of the utility model;

[0018] Figure 5 It is a schematic diagram of the connecting rod, the sliding groove and the latch of the utility model.

[0019] In the figure, angle grinder-1; handle-11; dust collecting tube-2; upper shell-21; lower shell-22; telescopic plate-23; collecting box-24; opening and closing plate-241; first rack-3; linkage mechanism-4; gear-41; second rack-42; pressure plate-43; support rod-431; connecting cover-51; through hole-52; connecting rod-53; slide groove-54; sliding plate-55; limiting hole-61; latch-62; limiting plate-63; protrusion-64. DETAILED DESCRIPTION

[0020] In order to make it easier to understand the structure of the present invention and the functional features and advantages that can be achieved, the preferred embodiments of the present invention are described in detail with reference to the drawings as follows:

[0021] Example:

[0022] like Figures 1 to 5 As shown, the utility model provides an angle grinder 1 with a dustproof component, including an angle grinder 1 and a handle 11 thereof, and the angle grinder 1 also includes components such as a protective cover and a grinding wheel. The handle 11 is movably connected to a dust collecting pipe 2 for collecting dust and debris on one side close to the grinding wheel of the angle grinder 1, and the dust collecting pipe 2 is placed at the lower edge of the protective cover to receive dust and debris. The protective cover can generally be rotated, and the rotation direction of the grinding wheel can be adjusted by rotating the protective cover. When the present application is in use, dust is ejected toward the side of the handle 11 of the angle grinder 1. The edge of one end of the dust collecting pipe 2 is fixedly connected to a first rack 3 for adjusting the size of the pipe opening of the dust collecting pipe 2, and the other end of the dust collecting pipe 2 is fixedly connected to a collection box 24 for storing dust and debris. The first rack 3 is meshed with a linkage mechanism 4 for lifting and lowering the first rack 3 as the cutting depth of the angle grinder 1 changes, so that the pipe opening of the dust collecting pipe 2 becomes larger as the cutting depth of the angle grinder 1 deepens and becomes smaller as the cutting depth of the angle grinder 1 becomes shallower.

[0023] The dust collecting pipe 2 comprises an upper shell 21, a lower shell 22 and a telescopic plate 23, one end of the telescopic plate 23 is fixedly connected to the upper shell 21, and the other end of the telescopic plate 23 is fixedly connected to the lower shell 22. The upper shell 21 and the lower shell 22 are hard plates, and the telescopic plate 23 is a soft material. One end of the first rack 3 is fixedly connected to the edge of the lower shell 22 away from the collecting box 24. When the first rack 3 descends, the distance between the upper shell 21 and the lower shell 22 becomes larger, that is, the opening of the dust collecting pipe 2 becomes larger. When the first rack 3 rises, the distance between the upper shell 21 and the lower shell 22 becomes smaller. The side wall of the collecting box 24 is hinged with an opening and closing plate 241, and the opening and closing plate 241 is interference fit with the collecting box 24. The collecting box 24 is in communication with the dust collecting pipe 2, and the dust entering the dust collecting pipe 2 is finally collected in the collecting box 24, and the powder or debris will not be thrown on people. The opening and closing plate 241 is interference fit with the collection box 24, so that the opening and closing plate 241 can close the collection box 24 and is also convenient to open. After opening, the dust in the collection box 24 can be poured out and cleaned.

[0024] As another example, Figure 3 and Figure 4As shown, the linkage mechanism 4 of the present application includes a gear 41, a second rack 42 and a pressure plate 43. The gear 41 is located between the second rack 42 and the first rack 3, and the gear 41 is meshed with the first rack 3 and the second rack 42. Since the gear 41 is arranged between the first rack 3 and the second rack 42, the movement directions of the first rack 3 and the second rack 42 are opposite. The second rack 42 is fixedly connected to the pressure plate 43 at one end close to the dust collecting pipe 2. The pressure plate 43 is parallel to the handle 11, and the end of the pressure plate 43 is located next to the grinding wheel of the angle grinder 1. On the one hand, the pressure plate 43 can be used as a reference to provide a marking line for cutting. On the other hand, when the grinding wheel penetrates into the pipe or plate, the height of the pressure plate 43 rises relatively. At this time, the second rack 42 rises, the first rack 3 drops, and the mouth of the dust collecting pipe 2 becomes larger. The height of the pressure plate 43 is slightly higher than the edge of the grinding wheel. A support rod 431 is fixedly connected to one side of the second rack 42 close to the pressing plate 43, and the other end of the support rod 431 is fixedly connected to the pressing plate 43. The support rod 431 may be one or more, and mainly plays a role in fixing the pressing plate 43. The pressing plate 43 may also be connected to the second rack 42 by threads, so as to install or remove the pressing plate 43 according to the use scenario.

[0025] As another example, Figure 1 and Figure 5 As shown, the present application also includes a connection cover 51 and a through hole 52. The bottom wall of the connection cover 51 is fixedly connected to the edge of the upper shell 21. The through hole 52 is opened on the top wall of the connection cover 51. The first rack 3 and the second rack 42 pass through the two through holes 52 respectively. The central axis of the gear 41 is fixedly connected to the inner wall of the connection cover 51. The central axis of the gear 41 is fixed to the inner wall of the connection cover 51 to enhance the stability of the gear 41 when it rotates. On the one hand, the connection cover 51 provides support for the gear 41 and the first rack 3 and the second rack 42. On the other hand, it may play a protective role to prevent excessive dust and debris from being deposited on the gear 41, the first rack 3 and the second rack 42.

[0026] A connecting rod 53 is movably connected to one side of the connecting cover 51 near the handle 11, and the other end of the connecting rod 53 is fixedly connected to the handle 11. When the angle grinder 1 is in operation, the connecting rod 53 can also be used as an auxiliary handle 11 to improve the control stability of the angle grinder 1 by the user. A sliding groove 54 is provided on the side of the connecting cover 51 near the connecting rod 53, and a sliding plate 55 is fixedly connected to the end of the connecting rod 53, and the sliding plate 55 slides in the sliding groove 54. In order to ensure the stability of the operation of the angle grinder 1, the sliding plate 55 is set to a square shape, and the sliding plate 55 will not rotate when sliding in the sliding groove 54.

[0027] As another example, Figure 5As shown, it also includes a limiting hole 61, a latch 62, a limiting plate 63 and a protrusion 64. The latch 62 is movably inserted into the limiting hole 61. The limiting plate 63 and the protrusion 64 are respectively fixed at both ends of the latch 62. The protrusion 64 is interference-fitted with the limiting hole 61. The surface of the protrusion 64 is an arc surface. When the dust collecting tube 2 needs to be installed, the slide groove 54 on the connecting cover 51 is inserted into the sliding plate 55, and then the latch 62 is inserted into the limiting hole 61 for fixing. The protrusion 64 forms an interference fit with the limiting hole 61 to prevent the latch 62 from falling out of the limiting hole 61. The latch 62 limits the movement of the connecting rod 53. The latch 62 is provided to facilitate the disassembly and fixing of the connecting cover 51.

[0028] The present application discloses an angle grinder 1 with a dustproof component, and the working principle is as follows: when it is necessary to cut pipes and plates, especially metal pipes, the slide groove 54 on the connecting cover 51 is inserted into the sliding plate 55 on the connecting rod 53, and the latch 62 is inserted into the limiting hole 61. At this time, the connecting rod 53 is connected to the connecting cover 51, and the protrusion 64 on the latch 62 forms an interference fit with the limiting hole 61, so that the latch 62 is not easy to slide out. Turn on the switch of the angle grinder 1, and cut the pipe. The deeper the angle grinder 1 cuts, the higher the relative height of the pressure plate 43 supported by the pipe, and the higher the height of the second rack 42, the first rack 3 descends, and the lower shell 22 of the dust collecting pipe 2 connected to the first rack 3 descends, so that the distance between the lower shell 22 and the upper shell 21 increases, thereby expanding the pipe mouth of the dust collecting pipe 2 vertically. In this way, it can adapt to the change of the cutting depth of the angle grinder 1 and the change of the projection angle of dust and debris. After the cutting is completed, the pressing plate 43 can be reset. The dust and debris collected by the dust collecting tube 2 are finally collected in the collecting box 24. The opening and closing plate 241 on the collecting box 24 can be opened to clean the collecting box 24. After use, the latch 62 is pulled out to remove the connecting cover 51 and the dust collecting tube 2.

[0029] The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Any technician familiar with the field can make many possible changes and modifications to the technical solution of the present invention by using the above technical content without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any changes, modifications, equivalent changes and modifications made to the above embodiments based on the technology of the present invention without departing from the content of the technical solution of the present invention belong to the protection scope of the present technical solution.

Claims

1. An angle grinder with a dustproof component, characterized in that , comprising an angle grinder (1) and a handle (11) thereof, wherein the handle (11) is movably connected to a dust collecting pipe (2) for collecting dust and debris at a side close to a grinding wheel of the angle grinder (1), the edge of one end of the dust collecting pipe (2) is fixedly connected to a first rack (3) for adjusting the size of the dust collecting pipe (2) mouth, the other end of the dust collecting pipe (2) is fixedly connected to a collection box (24) for storing dust and debris, the first rack (3) is meshed with a linkage mechanism (4) for causing the first rack (3) to move up and down as the cutting depth of the angle grinder (1) changes, so that the mouth of the dust collecting pipe (2) becomes larger as the cutting depth of the angle grinder (1) increases and becomes smaller as the cutting depth of the angle grinder (1) decreases.

2. An angle grinder with a dustproof component according to claim 1, characterized in that: The dust collecting pipe (2) comprises an upper shell (21), a lower shell (22) and a telescopic plate (23); one end of the telescopic plate (23) is fixedly connected to the upper shell (21), the other end of the telescopic plate (23) is fixedly connected to the lower shell (22), and one end of the first rack (3) is fixedly connected to an edge of the lower shell (22) away from the collecting box (24).

3. An angle grinder with a dustproof component according to claim 2, characterized in that: The linkage mechanism (4) comprises a gear (41), a second rack (42) and a pressure plate (43); the gear (41) is located between the second rack (42) and the first rack (3), and the gear (41) is meshed with the first rack (3) and the second rack (42); the second rack (42) is fixedly connected to the pressure plate (43) at one end close to the dust collecting pipe (2); and the pressure plate (43) is parallel to the handle (11).

4. An angle grinder with a dustproof component according to claim 3, characterized in that: It also includes a connecting cover (51) and a through hole (52), wherein the bottom wall of the connecting cover (51) is fixedly connected to the edge of the upper shell (21), the through hole (52) is opened on the top wall of the connecting cover (51), the first rack (3) and the second rack (42) pass through the two through holes (52) respectively, and the central axis of the gear (41) is fixedly connected to the inner wall of the connecting cover (51).

5. An angle grinder with a dustproof component according to claim 4, characterized in that: A connecting rod (53) is movably connected to a side of the connecting cover (51) close to the handle (11), and the other end of the connecting rod (53) is fixedly connected to the handle (11). A sliding groove (54) is provided on a side of the connecting cover (51) close to the connecting rod (53), and a sliding plate (55) is fixedly connected to the end of the connecting rod (53), and the sliding plate (55) slides in the sliding groove (54).

6. An angle grinder with a dustproof component according to claim 5, characterized in that: It also includes a limiting hole (61), a latch (62), a limiting plate (63) and a protrusion (64), wherein the latch (62) is movably inserted into the limiting hole (61), the limiting plate (63) and the protrusion (64) are respectively fixed to two ends of the latch (62), the protrusion (64) is interference-fitted with the limiting hole (61), and the latch (62) limits the movement of the connecting rod (53).

7. An angle grinder with a dustproof component according to claim 2, characterized in that: An opening and closing plate (241) is hingedly connected to the side wall of the collection box (24), and the opening and closing plate (241) is interference-fitted with the collection box (24).

8. An angle grinder with a dustproof component according to claim 3, characterized in that: A support rod (431) is fixedly connected to one side of the second rack (42) close to the pressing plate (43), and the other end of the support rod (431) is fixedly connected to the pressing plate (43).

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