CN219796093U - Dustproof structure of outer end bearing of electric tool output shaft - Google Patents
Dustproof structure of outer end bearing of electric tool output shaft Download PDFInfo
- Publication number
- CN219796093U CN219796093U CN202321011577.3U CN202321011577U CN219796093U CN 219796093 U CN219796093 U CN 219796093U CN 202321011577 U CN202321011577 U CN 202321011577U CN 219796093 U CN219796093 U CN 219796093U
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- dustproof
- output shaft
- cover
- plate
- bearing
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- 210000002268 wool Anatomy 0.000 claims abstract description 11
- 238000010276 construction Methods 0.000 claims abstract description 8
- 210000002421 cell wall Anatomy 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 47
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000011440 grout Substances 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 239000004568 cement Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000005498 polishing Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- -1 sweeps are scattered Substances 0.000 description 1
Abstract
The utility model provides a dustproof structure of an outer end bearing of an output shaft of an electric tool, which comprises a front cover and an output shaft, wherein the front cover is internally provided with the bearing, the output shaft is connected to an inner ring of the bearing, a dustproof structure is further arranged between the front cover and the output shaft and is positioned at the outer end of the bearing, the dustproof structure sequentially comprises wool felt, a dustproof inner guard plate, a dustproof cover and a dustproof outer protecting cover from inside to outside, and the dustproof outer protecting cover is fixedly connected with an opening of the front cover. The dustproof structure has low processing requirement and simple assembly, so that the manufacturing cost can be reduced; through wool felt, dustproof inner guard board, the cooperation design of shield and dustproof outer protecting cover has made to form three dustproof construction between output shaft and the protecgulum, and tertiary dustproof promptly can high-efficiently block dust and grout comprehensively and get into in the bearing, and dustproof effect promotes 5 times at least, promotes the life of bearing to promote the life and the stability in use of complete machine.
Description
Technical Field
The utility model relates to the technical field of electric tools, in particular to a dustproof structure of an outer end bearing of an output shaft of an electric tool.
Background
The electric tool is often applied to our daily life to wide application is in manufacturing and city construction, and the operational environment is generally abominable, and dust, sweeps are scattered, and dust, iron fillings, grout etc. are just the first killer that causes the machine damage, have seriously influenced the life-span of electric tool internals thereby influence complete machine life. The angle grinder has wide application scenes, is often used for polishing, cutting and polishing metal and stone, is also often used for opening a wall groove in interior decoration, uses an air gun to periodically remove dust in the interior to check whether an air inlet and an air outlet of the machine are blocked, and can effectively reduce abrasion of dust to the machine by removing greasy dirt and dust of tool parts, but because the disassembly mode is not very convenient, most users are relatively dislike for periodically cleaning the interior dust.
In prior art, although dustproof structural design has all been done to many electric tools (including angle grinder, for example, the disclosure is CN218613487U, the disclosure is 2023, the angle grinder dust keeper of day 03 month 14, its design can carry out the dust absorption while grinding the angle, can improve the dust collecting effect, can collect the dust, can conveniently dismantle and clean the dust screen simultaneously, it includes the casing, be provided with power and motor in the casing, install the switch in the outside of casing, install the connecting block on the output shaft of motor, be connected with the power shaft on the connecting block, the front end of casing is connected with the shield, the power shaft rotates with the shield to be connected, the outside of power shaft is connected with the fan, the fan is located the casing inside, the polishing dish is installed in the outside of power shaft, the loudspeaker box is cone-shaped structure and inboard is provided with a plurality of induction ports, the intercommunication has a plurality of return bends between loudspeaker box and the shield, be connected with coupling mechanism between casing and the shield, be provided with baffle and a plurality of supporting pieces in the casing, baffle and a plurality of supporting pieces all contact with the power.
The above patent can only block a part of dust with larger particles, can not effectively block dust with smaller particles and cement paste, and can still form fatal damage to the bearing at the outer end of the output shaft in the shell (front cover), thereby influencing the service life and the use cost of the electric tool.
Disclosure of Invention
The utility model aims to provide a dustproof structure of an outer end bearing of an output shaft of an electric tool, which solves the problems that in the prior art, the electric tool is poor in dustproof effect under high dust and high humidity environments, fatal damage is easily formed on the outer end bearing of the output shaft, the disassembly is inconvenient, the cleaning is difficult, the service life of the electric tool is short, and the use stability is poor.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
the utility model provides a dustproof construction of electric tool output shaft outer end bearing, includes protecgulum and output shaft, be provided with the bearing in the protecgulum, output shaft in on the inner circle of bearing, still be provided with dustproof construction between protecgulum and the output shaft, and dustproof construction is located the outer end of bearing, dustproof construction includes the wool felt from inside to outside in proper order, dustproof inner guard board, shield and dustproof outer protecting cover, dustproof outer protecting cover with the opening part of protecgulum carries out fixed connection.
Preferably, the dustproof outer cover is sleeved on the output shaft, a dustproof plate and a connecting plate are arranged on the dustproof outer cover, rib plates are arranged on the dustproof plate at intervals, grooves are formed between the two rib plates, a connecting table is arranged at the opening of the front cover corresponding to the connecting plate, and the connecting plate is fixed with the connecting table through screws, so that the dustproof outer cover covers and fixes the front cover.
Preferably, the height between the rib plates is inconsistent, so that a step rib plate design is formed.
Preferably, the dust cover is sleeved on the output shaft, a first connecting groove and a second connecting groove are formed in the dust cover, one side groove wall of the first connecting groove is higher than the other side groove wall, the dust cover is shaped like a Chinese character 'ji', and the groove wall on one side of the first connecting groove is sleeved on the output shaft.
Preferably, the dust cover is located above the dust plate on the dust-proof outer cover, one of the rib plates is located in the first connecting groove, and a gap is formed between the outer side wall of the second connecting groove and the inner wall of the rib plate on the outermost side of the dust plate.
Preferably, the dustproof inner guard plate is sleeved on the dustproof cover, a clamping table and a third connecting groove are formed in the dustproof inner guard plate, a gap is formed between the clamping table and the groove wall on one side of the first connecting groove, the clamping table is located in the first connecting groove, the second connecting groove is located in the third connecting groove, and the outer side wall of the third connecting groove is in abutting connection with the rib plate on the outermost side of the dustproof plate.
Preferably, the felt is disposed on the clamping table and is in abutting connection with a groove wall on one side of the high side of the first connecting groove, a fourth connecting groove and a fifth connecting groove are formed in the front cover, the dustproof structure is located in the fourth connecting groove, and the bearing is located in the fifth connecting groove.
The utility model has the following beneficial effects:
(1) The dustproof structure has the advantages of simple structure, low processing requirement and simple assembly, thereby reducing the manufacturing cost;
(2) Through the cooperation design of wool felt, dustproof inner guard plate, shield and dustproof outer protecting cover, three dustproof structures are formed between output shaft and front cover, namely three-stage dustproof can effectively and comprehensively prevent dust and cement paste from entering the bearing, the dustproof effect is improved by at least 5 times, the service life of the bearing is prolonged, and therefore the service life and the service stability of the whole machine are improved;
(3) The dustproof outer protecting cover is a part for blocking and storing most of dust, and a user can regularly detach and clean the dust, so that damage of the dust to the bearing is reduced, and the service life of the machine is prolonged, and the user experience is improved.
Drawings
FIG. 1 is a schematic view of the present utility model attached to a housing of a power tool;
FIG. 2 is a schematic cross-sectional view of the present utility model attached to a housing of a power tool;
FIG. 3 is an enlarged schematic view of the portion A in FIG. 2;
FIG. 4 is a schematic view of the front cover of the present utility model;
FIG. 5 is a schematic view of the structure of the dustproof inner guard board in the present utility model;
fig. 6 is a schematic structural view of a dust-proof outer cover according to the present utility model.
In the figure: 1-a front cover; 2-an output shaft; 3-bearing; 4-wool felt; 5-a dustproof inner guard board; 6-a dust cap; 7-a dustproof outer protecting cover; 8-a screw; 9-a power tool housing; 101-a connection station; 102-a fourth connecting slot; 103-a fifth connecting groove; 501-a clamping table; 502-a third connecting groove; 601-a first connection groove; 602-a second connecting slot; 701-connecting plates; 702-rib plates; 703-grooves.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1-6, a dustproof structure of an outer end bearing of an output shaft of an electric tool comprises a front cover 1 and an output shaft 2, wherein a bearing 3 is arranged in the front cover 1, the output shaft 2 is connected to an inner ring of the bearing 3, a dustproof structure is further arranged between the front cover 1 and the output shaft 2, the dustproof structure is positioned at the outer end of the bearing 3 and sequentially comprises a wool felt 4, a dustproof inner guard plate 5, a dustproof cover 6 and a dustproof outer guard cover 7 from inside to outside, and the dustproof outer guard cover 7 is fixedly connected with an opening of the front cover 1.
The dustproof structure has the advantages of simple structure, low processing requirement and simple assembly, thereby reducing the manufacturing cost; through the cooperation design of the wool felt 4, the dustproof inner guard plate 5, the dustproof cover 6 and the dustproof outer guard cover 7, three dustproof structures are formed between the output shaft 2 and the front cover 1, namely three-level dustproof can be realized, dust and cement paste can be effectively and comprehensively prevented from entering the bearing 3, the dustproof effect is at least improved by 5 times, the service life of the bearing 3 is prolonged, and therefore the service life and the service stability of the whole machine are improved; the dustproof outer protecting cover 7 is a part for blocking and storing most of dust, so that a user can regularly detach and clean the dust, damage of the dust to the bearing 3 is reduced, and the service life of the machine and the user experience are further improved.
Further, the dustproof outer protecting cover 7 is sleeved on the output shaft 2, the dustproof outer protecting cover 7 is provided with a dustproof plate and a connecting plate 701, rib plates 702 are arranged on the dustproof plate at intervals, grooves 703 are formed between the two rib plates 702, the opening of the front cover 1 corresponds to the connecting plate 701, the connecting plate 701 is provided with a connecting table 101, the connecting plate 701 is fixed with the connecting table 101 through screws 8, the dustproof outer protecting cover 7 is fixedly covered on the front cover 1, the height between the rib plates 702 and the rib plates 702 is inconsistent, a step rib plate design is formed, the dustproof cover 6 is sleeved on the output shaft 2, a first connecting groove 601 and a second connecting groove 602 are formed in the dustproof cover 6, one side groove wall of the first connecting groove 601 is higher than the other side groove wall, the dustproof cover 6 is formed into a Chinese character 'ji', the groove wall of the side of the first connecting groove 601 is sleeved on the output shaft 2, the dustproof cover 6 is located above the dustproof outer protecting cover 7, one rib plate 702 is located in the first connecting groove 601, and a gap is formed between the outer side wall of the second connecting groove 602 and the outermost rib plate 702.
In the above design, since dust must enter the front cover 1 through the dust-proof outer protecting cover 7, a stepped rib plate 702 and a small-gap multi-section groove 703 are formed on the dust-proof outer protecting cover 7, and the dust-proof cover 6 is in a zigzag dust-proof design, so that the dust-proof outer protecting cover 7 and the dust-proof cover 6 cooperate to form a concave-convex labyrinth, so that an annular labyrinth channel is formed between the bearing 3 and the external environment, most of dust falls into the small-gap multi-section groove 703 after being blocked in the rotation process of the dust-proof cover 6 along with the output shaft 2, an internal space for blocking and collecting dust is formed, the adhesion of dust to the dust-proof cover 6 in a wet environment is reduced, and most of granular dust and scrap iron are blocked on the dust-proof outer protecting cover 7.
Further, the dustproof inner guard plate 5 is sleeved on the dustproof cover 6, the dustproof inner guard plate 5 is provided with a clamping table 501 and a third connecting groove 502, a gap is formed between the clamping table 501 and the groove wall on one side of the high side of the first connecting groove 601, the clamping table 501 is located in the first connecting groove 601, the second connecting groove 602 is located in the third connecting groove 502, and the outer side wall of the third connecting groove 502 is in abutting connection with the rib plate 702 on the outermost side of the dustproof plate.
In the above design, when most of the dust has been blocked, still a small part of the dust enters between the dustproof inner guard 5 and the dustproof cover 6, and a bent labyrinth and an S-shaped gap channel are formed between the dustproof outer guard 7 and the dustproof cover 6, and as the dustproof cover 6 rotates at a high speed along with the output shaft, the small part of the dust entering the dustproof inner guard is blown onto the inner wall of the dustproof inner guard 5 by the rotational flow of the dustproof cover 6, thereby realizing secondary dust prevention.
Further, the wool felt 4 is disposed on the clamping table 501 and is in abutting connection with the groove wall on the high side of the first connecting groove 601, the front cover 1 is further provided with a fourth connecting groove 102 and a fifth connecting groove 103, the dustproof structure is located in the fourth connecting groove 102, and the bearing 3 is located in the fifth connecting groove 103.
In the above design, under the high dust and high humidity environment, the above secondary dust prevention has realized basic blocking, but still a very small part of liquid dust (such as cement slurry) enters the bearing 3, in order to effectively block the very small part of liquid dust, the hydrophobic and oil-proof properties of the wool felt 4 are adopted to resist the liquid dust and corrosive oil liquid, so that the bearing 3 is protected, and the three-stage dust prevention is realized.
The specific assembly steps are as follows: the first step is to press the hole interference fit of the dust cover 6 to the shaft shoulder of the output shaft 2 (form the first component), the second step is to put the wool felt 4 and the dust-proof inner guard 5 into the fourth connecting slot 102 of the front cover 1 manually, the third step is to press the component of the output shaft 2 and the dust cover 6 into the bearing 3 inner ring of the front cover 1 (the bearing 3 is installed in the fifth connecting slot 103 of the front cover 1), the fourth step is to assemble the dust-proof outer guard 7 to the front cover 1, and the fifth step is to fasten by driving the screw 8 between the connecting plate 701 of the dust-proof outer guard 7 and the connecting table 101 of the front cover 1.
When cleaning is needed, the dustproof outer protecting cover 7 can be detached for cleaning only by unscrewing the screw 8, so that the cleaning is simple and convenient.
According to the use requirement, the dustproof structure can be applied to an angle grinder and can also be applied to other electric tools with output shafts.
The foregoing is merely illustrative of the preferred embodiments of the present utility model and is not intended to limit the embodiments and scope of the present utility model, and it should be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present utility model, and are intended to be included in the scope of the present utility model.
Claims (7)
1. The utility model provides a dustproof construction of electric tool output shaft outer end bearing, includes protecgulum and output shaft, its characterized in that: the novel dustproof device is characterized in that a bearing is arranged in the front cover, the output shaft is connected to the inner ring of the bearing, a dustproof structure is further arranged between the front cover and the output shaft, the dustproof structure is located at the outer end of the bearing, the dustproof structure sequentially comprises wool felt, a dustproof inner guard plate, a dustproof cover and a dustproof outer protecting cover from inside to outside, and the dustproof outer protecting cover is fixedly connected with the opening of the front cover.
2. The dust-proof structure of an output shaft outer end bearing of an electric tool according to claim 1, wherein: the dustproof outer protecting cover is sleeved on the output shaft, a dustproof plate and a connecting plate are arranged on the dustproof outer protecting cover, rib plates are arranged on the dustproof plate at intervals, grooves are formed between the two rib plates, the opening of the front cover corresponds to the connecting plate, a connecting table is arranged on the connecting plate, and the connecting plate is fixed with the connecting table through screws, so that the dustproof outer protecting cover covers and fixes the front cover.
3. The dust-proof structure of an output shaft outer end bearing of an electric tool according to claim 2, wherein: the heights of the rib plates are inconsistent, and a step-type rib plate design is formed.
4. A dust-proof structure of an output shaft outer end bearing of an electric tool according to claim 3, wherein: the dustproof cover is sleeved on the output shaft, a first connecting groove and a second connecting groove are formed in the dustproof cover, the groove wall on one side of the first connecting groove is higher than the groove wall on the other side of the first connecting groove, the dustproof cover is enabled to form a Chinese character 'ji', and the groove wall on one side of the first connecting groove is sleeved on the output shaft.
5. The dust-proof structure of an output shaft outer end bearing of an electric tool according to claim 4, wherein: the dustproof cover is located above the dustproof plate on the dustproof outer protecting cover, one rib plate is located in the first connecting groove, and a gap is formed between the outer side wall of the second connecting groove and the inner wall of the rib plate on the outermost side of the dustproof plate.
6. The dust-proof structure of an output shaft outer end bearing of an electric tool according to claim 5, wherein: the dustproof inner guard plate is sleeved on the dustproof cover, a clamping table and a third connecting groove are formed in the dustproof inner guard plate, a gap is formed between the clamping table and the groove wall on one side of the first connecting groove, the clamping table is located in the first connecting groove, the second connecting groove is located in the third connecting groove, and the outer side wall of the third connecting groove is in abutting connection with the rib plate on the outermost side of the dustproof plate.
7. The dust-proof structure of an output shaft outer end bearing of an electric tool as set forth in claim 6, wherein: the wool felt set up in on the draw-in gear, and with the cell wall conflict of one side of first spread groove height be connected, be provided with fourth spread groove and fifth spread groove on the protecgulum, dustproof construction is located in the fourth spread groove, the bearing is located in the fifth spread groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321011577.3U CN219796093U (en) | 2023-04-26 | 2023-04-26 | Dustproof structure of outer end bearing of electric tool output shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321011577.3U CN219796093U (en) | 2023-04-26 | 2023-04-26 | Dustproof structure of outer end bearing of electric tool output shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219796093U true CN219796093U (en) | 2023-10-03 |
Family
ID=88152603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321011577.3U Active CN219796093U (en) | 2023-04-26 | 2023-04-26 | Dustproof structure of outer end bearing of electric tool output shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219796093U (en) |
-
2023
- 2023-04-26 CN CN202321011577.3U patent/CN219796093U/en active Active
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