CN106584371B - Dust collecting device of electric tool - Google Patents
Dust collecting device of electric tool Download PDFInfo
- Publication number
- CN106584371B CN106584371B CN201610982031.0A CN201610982031A CN106584371B CN 106584371 B CN106584371 B CN 106584371B CN 201610982031 A CN201610982031 A CN 201610982031A CN 106584371 B CN106584371 B CN 106584371B
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- dust collecting
- box body
- hole
- dust
- fan
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- 239000000428 dust Substances 0.000 title claims abstract description 168
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- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 238000005553 drilling Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003405 preventing effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
Abstract
The invention discloses a dust collecting device of an electric tool, which belongs to the technical field of electric tools and solves the technical problems of poor dust collecting effect and complex structure of the traditional dust collecting device.
Description
[ field of technology ]
The invention relates to the technical field of electric tools, in particular to a dust collecting device of an electric tool.
[ background Art ]
Currently, when drilling holes using power tools such as hammer drills or percussion drills, a large amount of dust and debris is generated. These chips and dust are diffused in the surrounding air, causing serious exceeding of dust content, and seriously affecting human health and surrounding environment.
To change this situation, some existing electric tools employ dust collection measures, for example, patent application CN103182702a, which is provided with a dust collector including a guide portion and a container for collecting dust generated by the electric tool when processing a workpiece, the container being mounted on the electric tool through the guide portion, an opening portion of the container being abutted against a surface to be processed of the workpiece to collect the generated dust in the container, the container being provided with a discharge port in which a dust collecting bag is fitted, the dust being discharged into the dust collecting bag through the discharge port. However, this type of tool has a poor dust collection effect, that is, dust partially remains in the opening of the container during use, and when the operator moves the power tool, the dust falls from the opening and spreads in the surrounding air, affecting the health of the human body and the surrounding environment.
[ invention ]
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing the dust collecting device of the electric tool, which has the characteristic of good dust collecting effect.
The technical problems are solved, and the invention adopts the following technical scheme:
the utility model provides a dust collecting device of electric tool, electric tool includes the electric tool body and installs the drill bit at the electric tool body, dust collecting device includes box body, bracing piece subassembly and installs support on the electric tool body, the box body passes through bracing piece subassembly is installed on the support, the support with bracing piece subassembly sliding fit, the box body includes the last box body of detachable connection and lower box body, be equipped with the air intake on the last box body and supply the through-hole that the drill bit runs through, be equipped with ventilative dust collection portion, air outlet and install the fan subassembly between dust collection portion and air outlet in the lower box body, the fan subassembly during operation, the air is followed through the air intake and is flowed in the dust collection portion and discharged through the air outlet to collect the dust in the dust collection portion.
Further, the fan assembly comprises a fan, a control switch and a battery, the battery is electrically connected with the fan, the control switch is used for controlling on-off of the electric connection between the battery and the fan, and the control switch is arranged on the side wall of the lower box body.
Further, the lower box body further comprises a base detachably connected to the bottom of the lower box body, the air outlet is formed in the base, and the fan is mounted on the base.
Further, a guiding channel is arranged on the upper box body, the guiding channel is conical, the upper end of the guiding channel is communicated with the through hole, and the bottom end of the guiding channel is communicated with the dust collecting part.
In a further scheme, the upper box body is further provided with a guide pipe communicated with the bottom of the guide channel, and the outer side of the guide pipe is provided with external threads.
In a further scheme, the dust collecting part comprises a dust collecting box and a ventilated dust collecting bag, a vent hole is arranged on the wall of the dust collecting box, and the dust collecting bag is sleeved inside the dust collecting box.
In a further scheme, an upper positioning rib extending downwards is arranged on the outer side wall of the guide channel, a lower positioning rib is arranged in the lower box body, and the edge of the dust collecting bag is clamped between the upper positioning rib and the lower positioning rib.
Further, the upper box body is provided with a clamping hole, the lower box body is provided with a buckle, and the buckle is clamped in the clamping hole.
Further, the through hole comprises a first through hole and a second through hole which are oppositely arranged, the first through hole is arranged on one side of the upper box body, which is far away from the electric tool body, the opening size of the air inlet is gradually reduced from top to bottom, and the bottom end of the air inlet is communicated with the first through hole.
In a further scheme, the second through hole is provided with a bearing and a brush assembly, the brush assembly comprises a mounting cylinder detachably connected with the inner side of the bearing and a brush circumferentially arranged on the inner side of the mounting cylinder, and the end part of the brush is propped against the drill bit.
The invention has the beneficial effects that:
the invention relates to a dust collecting device of an electric tool, which comprises an electric tool body and a drill bit arranged on the electric tool body, wherein the dust collecting device comprises a box body, a support rod assembly and a support arranged on the electric tool body, the box body is arranged on the support through the support rod assembly, the support is in sliding fit with the support rod assembly, the box body comprises an upper box body and a lower box body which are detachably connected, the upper box body is provided with an air inlet and a through hole for the drill bit to penetrate, the lower box body is internally provided with a ventilation dust collecting part, an air outlet and a fan assembly arranged between the dust collecting part and the air outlet, and when the fan assembly works, air flows into the dust collecting part through the air inlet and the through hole and is discharged through the air outlet so as to collect dust in the dust collecting part. Compared with the prior art, when the electric tool is used, the fan assembly is turned on, the fan assembly works to enable negative pressure to be generated in the lower box body, external air flows into the upper box body through the air inlet and the through hole under the action of pressure difference and flows into the dust collecting part, and then is discharged from the air outlet, and in the flowing process, air flow can drive dust to flow into the dust collecting part, so that dust is prevented from accumulating on the wall of the through hole, dust is effectively prevented from being dispersed in the air, and the dust collecting effect of the dust is improved; in addition, because last box body is removable with lower box body be connected, consequently when the dust in the dust collection part of needs clearance, can dismantle down the box body, empty the dust wherein, install down the box body and continue to use on last box body after accomplishing, in this way, the user of being convenient for clear up the dust in the dust collection part, easy operation is convenient.
The fan assembly comprises a fan, a control switch and a battery, the battery is electrically connected with the fan, the control switch is used for controlling the on-off of the electric connection between the battery and the fan, and the control switch is arranged on the side wall of the lower box body. By means of the design, a user can control the running state of the fan through the control switch, the structure is simple, and occupied space is small.
The lower box body further comprises a base detachably connected to the bottom of the lower box body, the air outlet is formed in the base, and the fan is mounted on the base. The base is detachably connected with the lower box body, so that a user can clean dust in the fan conveniently in the future.
The upper box body is provided with a guide channel which is conical and is wide at the upper part and narrow at the lower part, the upper end of the guide channel is communicated with the through hole, and the bottom end of the guide channel is communicated with the dust collecting part. The arrangement of the guide channel can facilitate the collection of dust, and the dust is easy to fall into the dust collecting part, thereby improving the dust collecting effect.
The upper box body is also provided with a guide pipe communicated with the bottom of the guide channel, and the outer side of the guide pipe is provided with external threads. So design, when the user need not install down the box body, the user can install the bottle lid on the stand pipe, bottle lid and stand pipe threaded connection in order to collect the dust.
The dust collecting part comprises a dust collecting box and a ventilated dust collecting bag, the wall of the dust collecting box is provided with a vent hole, and the dust collecting bag is sleeved inside the dust collecting box. When the airflow with dust flows through the dust collecting bag, the dust can fall into the dust collecting bag, the airflow is discharged through the vent hole, and a user only needs to take out the dust collecting bag when cleaning the dust, so that the dust collecting box is not required to be disassembled and assembled, and the operation is simple and convenient.
The outer side wall of the guide channel is provided with an upper positioning rib extending downwards, the lower box body is internally provided with a lower positioning rib, and the edge of the dust collecting bag is clamped between the upper positioning rib and the lower positioning rib. By the design, the dust collecting bag opening is prevented from slipping into the dust collecting box.
The upper box body is provided with a clamping hole, the lower box body is provided with a buckle, and the buckle is clamped in the clamping hole. So design, simple structure, and easy dismounting.
The through hole comprises a first through hole and a second through hole which are oppositely arranged, the first through hole is arranged on one side, far away from the electric tool body, of the upper box body, the opening size of the air inlet is gradually reduced from top to bottom, and the bottom end of the air inlet is communicated with the first through hole. The air inlet is conical, the air speed at the bottom end of the air inlet is high enough to facilitate dust blowing, especially dust and dust just coming out of a drilled hole are blown away, the dust collection effect is improved, in addition, the drill bit can be cooled by the high enough air speed, the service life of the drill bit is prolonged, and the probability of scalding people by the drill bit is reduced.
The second through hole is provided with a bearing and a brush assembly, the brush assembly comprises a mounting cylinder detachably connected with the inner side of the bearing and a brush circumferentially arranged on the inner side of the mounting cylinder, and the end part of the brush abuts against the drill bit. So design, when the lower box body is not used, the brush subassembly can prevent that the dust from leaking from the second through-hole, and the brush subassembly passes through the bearing to be installed on the second through-hole simultaneously, reducible brush and the friction of drill bit, prolonged the life of brush, brush cylinder and bearing detachable connection, the later change of being convenient for.
These features and advantages of the present invention will be disclosed in detail in the following detailed description and the accompanying drawings.
[ description of the drawings ]
The invention is further described with reference to the accompanying drawings:
FIG. 1 is a schematic view showing the overall structure of a power tool equipped with a dust collecting device according to a preferred embodiment of the present invention;
fig. 2 is a schematic view showing a dust collecting device according to a preferred embodiment of the present invention;
FIG. 3 is a top view of the upper cartridge in accordance with the preferred embodiment of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a perspective view of the lower case in the preferred embodiment of the present invention;
FIG. 6 is a half-sectional view (one) of the cartridge in the preferred embodiment of the present invention;
FIG. 7 is a half-sectional view (II) of the cartridge in the preferred embodiment of the present invention;
FIG. 8 is a top view of a portion of a dust separating apparatus in accordance with a preferred embodiment of the present invention;
FIG. 9 is a cross-sectional view B-B of FIG. 8;
FIG. 10 is a perspective view of a support bar in accordance with a preferred embodiment of the present invention;
FIG. 11 is a schematic view showing the assembly of the auxiliary handle, the bracket and the guide in a preferred embodiment of the present invention;
FIG. 12 is a cross-sectional view of C-C of FIG. 8;
FIG. 13 is a perspective view of a brush assembly according to a preferred embodiment of the present invention;
fig. 14 is a D-D cross-sectional view of fig. 8.
[ detailed description ] of the invention
The technical solutions of the embodiments of the present invention will be explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present invention.
Referring to fig. 1 to 7, the electric tool in this embodiment includes an electric tool body 1 and a drill bit 2 mounted on the electric tool body 1, a dust collecting device is further mounted on the electric tool body 1, the dust collecting device includes a case, a support rod assembly and a bracket 3, the bracket 3 is sleeved on the electric tool body 1, the support rod assembly is mounted between the case and the bracket 3, the support rod assembly includes a support rod 4 and a spring 5 sleeved on the support rod 4, the right end of the support rod 4 is mounted on the bracket 3 through a nut 6, and the support rod 4 is slidably connected with the bracket 3, and the left end of the support rod 4 is fixedly mounted on the case.
The box body comprises an upper box body 7 and a lower box body 8, a through hole 70 for a drill bit 2 to pass through is formed in the upper box body 7, the through hole 70 comprises a first through hole 701 and a second through hole 702 which are formed in the front side and the rear side of the box body, an air inlet 71 is further formed in the front side of the box body, the air inlet 71 is arranged above the first through hole 701 and is communicated with the first through hole 701, the opening size of the air inlet is gradually reduced from top to bottom, namely, the air inlet 71 is conical, and the bottom end of the air inlet 71 is communicated with the first through hole 701.
The inside of the upper box body 7 is of a hollow structure, a guide channel 72 is arranged in the upper box body 7, the guide channel 72 is in a conical shape with a wide upper part and a narrow lower part, the upper end of the guide channel 72 is communicated with the through hole 70, a ventilated dust collecting part, an air outlet 81 and a fan assembly arranged between the dust collecting part and the air outlet 81 are arranged on the lower box body 8, the fan assembly comprises a fan 82, a control switch 83 and a battery 84, a containing cavity for containing the battery 84 is arranged on the lower box body 8, a cover plate 841 is arranged at an opening of the containing cavity, and the cover plate 841 is connected with the lower box body 8 through screws so as to facilitate the replacement of the battery 84 by a user in the future; the side wall of the lower box body 8 is also provided with a containing groove for containing a control switch 83, the fan 82 is electrically connected with a battery 84, the control switch 83 is connected with a circuit board, and the control switch 83 is used for controlling the on-off of the electrical connection between the fan 82 and the battery 84 so as to control the running state of the fan 82.
In order to facilitate the subsequent disassembly, maintenance and cleaning of the fan 82, the bottom of the lower box body 8 is also detachably connected with a base 85, the base 85 is connected with the bottom of the lower box body 8 through a buckle or a screw so as to fixedly install the fan 82 in the lower box body 8, and an air outlet 81 is arranged on the base 85; in addition, the dust collecting part comprises a dust collecting box 86 and a ventilated dust collecting bag 87 sleeved on the dust collecting box 86, the ventilated dust collecting bag 87 in the embodiment has the characteristics of ventilation and dust impermeability, for example, a non-woven cloth dust collecting bag is arranged on the side wall of the dust collecting box 86, the dust collecting bag 87 is a non-woven cloth dust collecting bag, and the bottom end of the guide channel 72 extends into the dust collecting bag 87.
In order to prevent the dust collecting bag 87 from sliding into the dust collecting box 86 during use, the outer side wall of the guide channel 72 is provided with an upper positioning rib 73 extending downwards, the lower box body 8 is internally provided with a lower positioning rib 88, and the edge of the dust collecting bag is clamped between the upper positioning rib 73 and the lower positioning rib 88. In order to better fix the dust collecting bag opening and the dust collecting box 86, the upper edge of the dust collecting box 86 is outwards bent to form a bent edge, the edge of the dust collecting bag and the upper edge of the dust collecting box 86 are clamped between the upper positioning rib 73 and the lower positioning rib 88, preferably, in order to facilitate the user to sleeve and take out the dust collecting bag 87, a handle ring made of hard material is sewn on the edge of the dust collecting bag 87, and the diameter of the handle ring is larger than that of the dust collecting box 86.
After the upper box body 7 and the lower box body 8 are assembled, the upper box body is installed on the support 3 through the support rod assembly, when a user drills holes by using the electric tool, the front side surface of the box body is propped against the surface of a processed object, the electric tool and the fan 82 are turned on, the drill bit 2 starts to drill holes, the spring 5 on the support rod assembly can press the box body at the moment, the box body is always clung to the surface of the processed object, the electric tool body 1 drives the drill bit 2 and the support 3 to push forwards, and the support 3 moves along the axial direction of the support rod 4 so as to ensure enough drilling depth. Dust is generated in the drilling process, the fan 82 is opened to generate negative pressure in the box body, external air enters the upper box body 7 from the air inlet 71 and the second through hole 702 under the action of pressure difference and enters the dust collecting bag through the guide channel 72, and as the dust collecting bag is ventilated, flowing air flows through the dust collecting bag and the vent hole 861 to the air outlet 81 and is discharged through the air outlet 81, in the flowing process of the air flow, the air flow drives the dust to flow into the dust collecting bag, so that the dust is prevented from accumulating on the wall of the through hole, the dust is effectively prevented from being dispersed in the air, and the dust collecting effect of the dust is improved; in addition, the fan assembly is simpler in structure, smaller in occupied space, lower in cost and light in weight; finally, because the air inlet 71 is conical, the air speed at the bottom end of the air inlet is high enough to facilitate blowing dust, especially dust just coming out of a drilled hole, so that the dust collection effect is improved, in addition, the drill bit 2 can be cooled by the high enough air speed, the service life of the drill bit 2 is prolonged, and the probability of scalding people by the drill bit 2 is reduced.
In order to prevent dust-laden air flow from flowing to the outside of the dust box 86 and causing dirt inside the box body, the upper positioning rib 73 and the lower positioning rib 88 in this embodiment are annular positioning ribs, and the upper positioning rib 73 and the lower positioning rib 88 are in hard sealing connection. In order to ensure that the air flow is completely discharged from the air outlet 81 and is prevented from flowing to other parts in the box body, the base 85 is also provided with an annular baffle rib 851, the baffle rib 851 is in sealing connection with the bottom of the annular shell of the fan, and finally, the top cover of the upper box body 7 is in sealing connection with the upper box body 7.
In addition, in order to ensure that the front side of the box body can be fully abutted against the surface of the processed object, the front side of the upper box body 7 is also provided with an elastic cushion, such as a rubber cushion, a silica gel cushion and the like, so as to reduce the phenomenon of uneven dust leakage on the surface of the processed object and reduce the damage of the box body to the decoration wall.
In order to facilitate the user to pour the dust in the dust bag 87, the upper box body 7 and the lower box body 8 are detachably connected, specifically, the upper box body 7 is provided with a clamping hole 74, the lower box body is provided with a buckle 89, and the buckle 89 is clamped in the clamping hole 74, so that the dust collecting device is simple in structure and convenient to assemble and disassemble. Of course, in other embodiments of the present invention, those skilled in the art may also use screw connection, bonding, etc., which are all within the scope of the present invention.
In addition, the upper box body 7 is also provided with a guide pipe 75 communicated with the bottom of the guide channel 72, the outer side of the guide pipe 75 is provided with external threads, at the moment, a user can detach the lower box body 8, the outlet of the guide pipe 75 is plugged by adopting a bottle cap matched with the external threads of the guide pipe, at the moment, dust is stored in the guide channel 72 of the upper box body, and after the dust is used, the cover is opened, and the dust is cleaned. Of course, those skilled in the art can also bind dust bags or sleeved balloons on the guide tube 75, and the dust collecting effect can also be achieved.
As shown in fig. 1, 8, 9 and 10, the left end of the support rod assembly of the present embodiment is locked on the upper case 7, and the upper case 7 is further provided with a button assembly 9 for releasing the locked state of the support rod assembly, and the button assembly 9 includes a button 90, a locking lever 91 and an elastic member 92, the elastic member 92 is preferably a spring, and the spring is sleeved on the locking lever 91. The upper box body 7 is provided with a mounting hole 76, the locking rod 91 is assembled in the mounting hole 76, the bottom end of the locking rod 91 comprises a boss 910 extending outwards in the radial direction, a limiting table 760 extending inwards in the radial direction is arranged on the inner wall of the mounting hole 76, the upper end of the locking rod 91 is positioned above the limiting table 760, the boss 910 is positioned below the limiting table 760, and a spring is pressed between the limiting table 760 and the button 90, so as to prevent the button 90 from being separated from the locking rod 91 and facilitate disassembly and assembly, the button 90 is in threaded connection with the upper end of the locking rod 91, and of course, a person skilled in the art can also realize tight fit of the button and the locking rod in a back-off clamping manner, so that details are not given here.
The left end of bracing piece 4 is equipped with recess 40, be equipped with the hole on the last box body 7, the left end cartridge of bracing piece is in the hole, when button subassembly 9 is in initial condition, boss 910 part on the locking lever 91 is located recess 40 to restrict the axial displacement of bracing piece 4, still be equipped with screw thread section 41 at the right-hand member of bracing piece, screw thread section 41 passes behind the support 3 and is connected with nut 6, in order to prevent to produce friction between nut 6 and the support 3 and prevent bracing piece 4 not hard up in the vibration, still install elastic washer between support 3 and nut 6, nut 6 overall dimension is little, do benefit to bracing piece 4 and move backward relative to support 3, be difficult for touching electric tool body 1. Since the spring 5 is pressed between the upper case 7 and the bracket 3, in order to prevent friction between the spring 5 and the upper case 7 from damaging the surface of the upper case 7, an elastic washer is further provided between the spring 5 and the upper case 7.
When the support rod assembly needs to be detached from the upper box body 7, the button 90 is pressed downwards, the boss 910 moves downwards at this time and is separated from the groove 40, the support rod 4 can be pulled out from the hole, the button 90 is pressed downwards when the detachment is completed, the boss 910 moves downwards at this time, the support rod 4 is inserted into the hole, the button 90 is released, and the boss 910 moves upwards and is positioned in the groove 40 under the rebound action of the spring so as to prevent the support rod 4 from being separated.
At least one flat position 42, for example, 1, 2, 3, etc., is arranged on the outer side of the support rod 4, the support rod in this embodiment is provided with 1 flat position 42, the cross section of which is D-shaped, and the hole of the support 3 in sliding fit with the support rod 4 is D-shaped, so that the support rod 4 is prevented from rotating during the use of the electric tool.
As shown in fig. 11, in order to facilitate the operation of the user, the dust collecting device of the present embodiment further includes an auxiliary handle 10, and the bracket 3 is mounted on the auxiliary handle 10 by means of bolts 11, and in use, the user can grasp the auxiliary handle 10 to improve the convenience of the operation and the accuracy of drilling.
In addition, as shown in fig. 2, 8 and 12, a guiding ruler 13 is further installed on the support 3 in the embodiment, a guiding hole 77 in clearance fit with the guiding ruler 13 is formed in the upper box 7, the rear end of the guiding ruler 13 is in clearance fit with the support 3, after the support 3 is locked on the auxiliary handle 10 by the bolt 11, the guiding ruler 13 is pressed on the support 3 by the lower end face of the bolt head of the bolt, so that axial movement of the guiding ruler is prevented, and the front end of the guiding ruler 13 is inserted into the guiding hole 77 and can reciprocate in the guiding hole 77. When the drill bit is used, a user adjusts the distance between the front end of the guide rule 13 and the front side surface of the upper box body 7 to enable the distance to be equal to the depth to be drilled, the front end surface of the drill bit 2 is leveled with the front side surface of the upper box body 7, when the drilling depth is reached, the front end of the guide rule 13 abuts against the surface of an object to be processed at the moment, the support 3 stops moving, namely the drill bit 2 cannot be pushed forward, the user is prompted to reach the machining depth, and the user is prevented from drilling too deeply.
Of course, in other embodiments of the invention, the support bar may be configured as a depth gauge that indicates the depth of the drill bit, and the user determines the depth of the drill bit by observing the distance of movement of the support.
As shown in fig. 2, the nut 6 is provided with an inner hexagonal hole 61, the guide 13 is a hexagonal prism matched with the inner hexagonal hole 61, when the support rod 4 needs to be disassembled and assembled, the guide 13 is inserted into the inner hexagonal hole 61 to disassemble the nut 6 from the support rod 4, and when the nut is assembled, the guide 13 can be used to screw the nut on the support rod 4 without other hexagonal wrenches, so that the operation is simple and convenient, the universality is strong, and after the support rod 4 is disassembled, the user can assemble the nut 6 and the gasket on the support rod 4 to prevent loss. Of course, those skilled in the art can also use other rod body dismounting nuts with diameters smaller than the inner hexagonal hole, which can achieve the basic effects of the preferred embodiment of the present invention and are also within the scope of the present invention.
In addition, the diameter of the front end of the guiding ruler 13 is smaller than that of the drill bit 2, and a user can pass the front end of the guiding ruler 13 through the through hole 70 on the box body and extend into the drill hole to take out dust in the drill hole, so that the dust falls into the dust collecting bag 87.
In summary, in order to facilitate packaging and transportation, a user can disassemble the dust collecting device into several parts, including the upper case 7, the lower case 8, the support rod 4, the spring 5, the guide 13, the bracket 3, the handle 10, etc., so as to reduce the packaging volume and facilitate the user to assemble.
As shown in fig. 13 to 14, the second through hole 702 of the present embodiment is further provided with a bearing 14 and a brush assembly, the brush assembly includes a mounting cylinder 15 and a brush 16 disposed at the front end of the inner peripheral side of the mounting cylinder 15, the bearing 14 is a ball bearing, the inner wall of the second through hole 702 is provided with a limit step 703, the outer ring of the bearing 14 is limited between the limit step 703 and the head of the screw by a screw so as to fix the bearing, the mounting cylinder 15 is mounted on the inner ring of the bearing 14 and is in interference fit with the inner ring of the bearing 14, the tail of the brush 16 is fixedly connected with the inner wall of the mounting cylinder 15, and the end portion abuts against the drill bit 2 so as to fill up the groove of the drill bit 2 and prevent dust from leaking out therefrom. When the lower box body 8 is not used, the brush 16 is driven to rotate by the groove on the drill bit when the drill bit 2 rotates, the ball bearing inner ring rotates under the action of the radial force of the brush 16, and the brush 16 is relatively static relative to the groove on the drill bit 2 due to the fact that the later-stage propelling speed of the drill bit 2 is slower, dust bumps into the brush 16 in the rotation of the brush assembly, the dust is blocked and sealed back due to the rotation of the brush 16, and the dust leakage preventing effect is achieved.
In order to facilitate the disassembly and assembly of the later-stage mounting cylinder 15, the outer wall of the rear end part of the mounting cylinder 15 in the embodiment is provided with a positioning step 151, and the positioning step 151 abuts against the rear end surface of the inner ring of the bearing 14, so that the positioning of the mounting cylinder 15 is facilitated, and the axial movement of the mounting cylinder is prevented. In addition, in order to prevent dust from entering the bearing 14 and affecting the rotation of the inner ring of the bearing 14, a dust-proof gasket 17 is welded to the front side of the bearing 14 to prevent dust from entering the bearing 14.
While the invention has been described in terms of embodiments, it will be appreciated by those skilled in the art that the invention is not limited thereto but rather includes the drawings and the description of the embodiments above. Any modifications which do not depart from the functional and structural principles of the present invention are intended to be included within the scope of the appended claims.
Claims (7)
1. The utility model provides a dust collecting device of electric tool, electric tool includes the electric tool body and installs the drill bit at the electric tool body, dust collecting device includes box body, bracing piece subassembly and installs the support on the electric tool body, the box body passes through bracing piece subassembly is installed on the support, support and bracing piece subassembly sliding fit, characterized in that, the box body includes removable upper box body and lower box body that connects, be equipped with the air intake on the upper box body and supply the through-hole that the drill bit runs through, be equipped with ventilative dust collection part, air outlet and install the fan subassembly between dust collection part and air outlet in the lower box body, the fan subassembly during operation, the air flows to dust collection part from the air intake in and discharges through the air outlet to collect the dust in the dust collection part; the upper box body is provided with a guide channel which is conical and is wide at the upper part and narrow at the lower part, the upper end of the guide channel is communicated with the through hole, and the bottom end of the guide channel is communicated with the dust collecting part; the upper box body is also provided with a guide pipe communicated with the bottom of the guide channel; the outer side of the guide tube is provided with external threads; the upper positioning ribs extending downwards are arranged on the outer side wall of the guide channel, the lower positioning ribs are arranged in the lower box body, the dust collecting part comprises a ventilated dust collecting bag, and the edge of the dust collecting bag is clamped between the upper positioning ribs and the lower positioning ribs.
2. The dust collecting apparatus of claim 1, wherein the fan assembly includes a fan, a control switch and a battery, the battery being electrically coupled to the fan, the control switch being for controlling on-off of the electrical coupling between the battery and the fan, the control switch being provided on a side wall of the lower case.
3. The dust collecting apparatus of claim 1, wherein the lower case further comprises a base detachably coupled to a bottom of the lower case, the air outlet is provided on the base, and the fan is mounted on the base.
4. The dust collecting device of claim 1, wherein the dust collecting part comprises a dust collecting case, a vent hole is provided on a wall of the dust collecting case, and the dust collecting bag is sleeved inside the dust collecting case.
5. The dust collecting device of claim 1, wherein the upper case is provided with a locking hole, the lower case is provided with a buckle, and the buckle is locked in the locking hole.
6. The dust collecting device of claim 1, wherein the through hole comprises a first through hole and a second through hole which are oppositely arranged, the first through hole is arranged on one side of the upper box body away from the electric tool body, the opening size of the air inlet is gradually reduced from top to bottom, and the bottom end of the air inlet is communicated with the first through hole.
7. The dust collecting apparatus of claim 6, wherein the second through hole is provided with a bearing and a brush assembly, the brush assembly includes a mounting cylinder detachably connected to an inner side of the bearing and a brush circumferentially provided to an inner side of the mounting cylinder, and an end of the brush abuts against the drill bit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610982031.0A CN106584371B (en) | 2016-11-08 | 2016-11-08 | Dust collecting device of electric tool |
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| CN201610982031.0A CN106584371B (en) | 2016-11-08 | 2016-11-08 | Dust collecting device of electric tool |
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| CN106584371A CN106584371A (en) | 2017-04-26 |
| CN106584371B true CN106584371B (en) | 2023-11-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110449626B (en) * | 2019-07-31 | 2020-09-22 | 中车青岛四方机车车辆股份有限公司 | Drill chip suction device and pneumatic drill |
| CN112894564A (en) * | 2019-12-03 | 2021-06-04 | 南京德朔实业有限公司 | Grinding type electric tool |
| CN219665906U (en) | 2020-03-25 | 2023-09-12 | 米沃奇电动工具公司 | Dust collector for use with a hand-held power tool |
| CN113059216B (en) * | 2021-04-02 | 2023-05-09 | 浙江时中电器有限公司 | Anti-chip environment-friendly electric drill |
| CN114043580A (en) * | 2021-12-13 | 2022-02-15 | 盐城鼎恒机械有限公司 | Scraping mechanism of plate scraping machine convenient for collecting waste materials |
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Address after: No. 150 Wenlong Road, Yuxin Town, Nanhu District, Jiaxing City, Zhejiang Province Applicant after: Zhejiang Yate Electric Appliance Co.,Ltd. Address before: Jiaxing City, Zhejiang province 314100 Nanhu District Yu Xin Zhen Industrial Zone North Water Road No. 1 Applicant before: ZHEJIANG YAT ELECTRICAL APPLIANCE Co.,Ltd. |
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