CN212518626U - Brushless motor instrument of leak protection oil - Google Patents
Brushless motor instrument of leak protection oil Download PDFInfo
- Publication number
- CN212518626U CN212518626U CN202020805361.4U CN202020805361U CN212518626U CN 212518626 U CN212518626 U CN 212518626U CN 202020805361 U CN202020805361 U CN 202020805361U CN 212518626 U CN212518626 U CN 212518626U
- Authority
- CN
- China
- Prior art keywords
- motor
- rotor shaft
- stator
- rotor
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000926 separation method Methods 0.000 claims abstract description 19
- 239000004519 grease Substances 0.000 claims abstract description 17
- 239000013013 elastic material Substances 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 230000000903 blocking effect Effects 0.000 claims abstract description 7
- 230000009471 action Effects 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 238000001125 extrusion Methods 0.000 claims abstract description 4
- 229920001973 fluoroelastomer Polymers 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000002277 temperature effect Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 10
- 230000004888 barrier function Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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- Motor Or Generator Frames (AREA)
Abstract
The utility model discloses a brushless motor instrument of leak protection oil has the stator, the rear end of stator install the motor back lid, the front end of stator is installed the motor front flange, the internally mounted of stator has the rotor, the shaft hole of rotor in install the rotor shaft, the rear end of rotor shaft cover after the motor through the rear bearing installation, the front end of rotor shaft passes through the front bearing and installs on the motor front flange, the front end of rotor shaft stretches out the outer part of motor front flange and installs transmission sun gear, transmission sun gear and front bearing between be provided with the separation part of making by elastic material, this separation part form the separation passageway with rotor shaft interference fit, with the hole interference fit of motor front flange after axis interference compression extrusion, prevent the liquid grease seepage under the high temperature effect. The blocking component is made of a high-temperature-resistant, corrosion-resistant and wear-resistant soft elastic material, so that leakage of liquid grease under the action of high temperature is effectively prevented.
Description
Technical Field
The utility model belongs to the technical field of the technique of brushless motor instrument and specifically relates to a brushless motor instrument of leak protection oil.
Background
Current brushless motor spanner has the inside that the smooth grease of wheel flows into brushless motor subassembly in the actual work, leads to the grease to spill over at the air outlet, causes the circuit board to damage. Grease is generally blocked from entering the interior of the motor by adding an oil-impermeable structure. The conventional oil leakage prevention structure is characterized in that a simply-formed hard gasket is added between a machine transmission mechanism and a brushless motor connecting mechanism, in actual continuous use, a transmission part and a transmission part form a high-temperature cavity, lubricating oil is in a liquid state and can enter the inside of a motor through a side gap of a front fixed bearing of the motor under the action of wind suction of motor blades, so that the oil flows out along with the blades, the oil on a circuit board of the brushless motor is accumulated to cause short circuit of different polarities of the circuit board, and the control part of the brushless motor is prevented from being damaged and does not work. Meanwhile, the hard gasket is worn by the rotating member in high-speed operation, and the grease easily corrodes the hard gasket, so that the hard gasket cannot prevent the leakage of the liquid grease in a high-temperature state.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: in order to overcome the defects in the prior art, the brushless motor tool capable of preventing oil leakage is provided, and the blocking component is made of the high-temperature-resistant, corrosion-resistant and wear-resistant soft elastic material, so that the leakage of liquid grease under the action of high temperature is effectively prevented.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a brushless motor instrument of leak protection oil, has the stator, the rear end of stator install the motor back lid, the front end of stator installs the flange before the motor, the internally mounted of stator has the rotor, the shaft hole of rotor in install the rotor shaft, the rear end of rotor shaft cover after the motor through the back bearing, the front end of rotor shaft passes through the front bearing and installs on the flange before the motor, the front end of rotor shaft stretches out the outer part of motor front flange and installs transmission sun gear, transmission sun gear and front bearing between be provided with the separation part of being made by elastic material, this separation part form the separation passageway with rotor shaft interference fit, with the hole interference fit of motor front flange after axis interference compression extrusion, prevent the liquid grease seepage under the high temperature effect.
More specifically, in the above technical solution, the blocking member is an oil-proof ring made of fluororubber.
More specifically, in the above technical solution, the axis of the stator, the axis of the rotor shaft, the axis of the rear bearing, and the axis of the front bearing are located on the same straight line.
More specifically, in the above technical solution, the rear end of the rotor shaft is provided with a fan blade, and the fan blade is located in an inner cavity of the rear cover of the motor.
The utility model has the advantages that: the utility model provides a pair of brushless motor instrument of leak protection oil, simple structure, it is with low costs, adopt high temperature resistant, corrosion-resistant, the soft elastic material who stands wear and tear to make the separation part, effectively prevent the liquid grease seepage under the high temperature effect, high-speed rotating part under the operation can not have wearing and tearing to elastic material separation part, and the grease can not corrode elastic material separation part, and effective separation grease gets into motor element.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
The reference numbers in the figures are: 1. a motor rear cover; 2. a fan blade; 3. a stator; 4. a rotor; 5. a front bearing; 6. a motor front flange; 7. a barrier member; 8. a rotor shaft; 9. a drive sun gear; 10. and a rear bearing.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "one side", "the other side", "both sides", "between", "middle part", "upper end", "lower end", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
See fig. 1, a brushless motor tool of leak protection oil, stator 3 has, lid 1 behind the motor is installed to the rear end of stator 3, motor front flange 6 is installed to the front end of stator 3, the internally mounted of stator 3 has rotor 4, install rotor shaft 8 in the shaft hole of rotor 4, the rear end of rotor shaft 8 is installed on lid 1 behind the motor through rear bearing 10, the front end of rotor shaft 8 is installed on motor front flange 6 through front bearing 5, the partial transmission sun gear 9 of the front end of rotor shaft 8 outside stretching out motor front flange 6 is installed, be provided with separation part 7 by elastic material between transmission sun gear 9 and the front bearing 5, this separation part 7 is with rotor shaft 8 interference fit after the axis interference compression extrusion, with the hole interference fit of motor front flange 6, form the separation passageway, prevent the liquid grease seepage under the high temperature effect.
Wherein the blocking member 7 has sufficient fatigue strength, and the blocking member 7 is an oil-proof ring made of fluororubber. Of course, the barrier member 7 may also be made of other soft elastic materials that are resistant to high temperatures, corrosion and abrasion. The axis of the stator 3, the axis of the rotor 4, the axis of the rotor shaft 8, the axis of the rear bearing 10 and the axis of the front bearing 5 are located on the same straight line. The rear end of the rotor shaft 8 is provided with a fan blade 2, and the fan blade 2 is positioned in the inner cavity of the motor rear cover 1. The motor front flange 6 is used as an outer ring fixing ring of the front bearing 5.
This brushless motor instrument of leak protection oil adopts high temperature resistant, corrosion-resistant, wear and tear's soft elastic material to make separation part 7, effectively prevents the liquid grease seepage under the high temperature effect, and the rotary part under the high-speed operation can not have wearing and tearing to elastic material separation part 7, and the grease can not corrode elastic material separation part 7, and effective separation grease gets into motor element.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (4)
1. The utility model provides a brushless motor instrument of leak protection oil which characterized in that: have stator (3), the rear end of stator (3) install lid (1) behind the motor, the front end of stator (3) installs motor front flange (6), the internally mounted of stator (3) has rotor (4), the shaft hole of rotor (4) in install rotor shaft (8), the rear end of rotor shaft (8) install on lid (1) behind the motor through rear bearing (10), the front end of rotor shaft (8) is installed on motor front flange (6) through front bearing (5), the part that the front end of rotor shaft (8) stretches out outside motor front flange (6) is installed transmission central gear (9), transmission central gear (9) and front bearing (5) between be provided with separation part (7) of being made by elastic material, this separation part (7) after axis interference compression extrusion with rotor shaft (8) interference fit, And the inner hole of the motor front flange (6) is in interference fit to form a blocking channel, so that liquid grease leakage under the high-temperature action is prevented.
2. An oil-leakage-preventing brushless motor tool according to claim 1, characterized in that: the blocking component (7) is an oil-proof ring made of fluororubber.
3. An oil-leakage-preventing brushless motor tool according to claim 1, characterized in that: the axial line of the stator (3), the axial line of the rotor (4), the axial line of the rotor shaft (8), the axial line of the rear bearing (10) and the axial line of the front bearing (5) are positioned on the same straight line.
4. An oil-leakage-preventing brushless motor tool according to claim 1, characterized in that: the rear end of the rotor shaft (8) is provided with a fan blade (2), and the fan blade (2) is positioned in the inner cavity of the motor rear cover (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020805361.4U CN212518626U (en) | 2020-05-14 | 2020-05-14 | Brushless motor instrument of leak protection oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020805361.4U CN212518626U (en) | 2020-05-14 | 2020-05-14 | Brushless motor instrument of leak protection oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212518626U true CN212518626U (en) | 2021-02-09 |
Family
ID=74380868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020805361.4U Expired - Fee Related CN212518626U (en) | 2020-05-14 | 2020-05-14 | Brushless motor instrument of leak protection oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212518626U (en) |
-
2020
- 2020-05-14 CN CN202020805361.4U patent/CN212518626U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210209 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |