CN220296980U - Brushless impact electric wrench - Google Patents
Brushless impact electric wrench Download PDFInfo
- Publication number
- CN220296980U CN220296980U CN202223514016.3U CN202223514016U CN220296980U CN 220296980 U CN220296980 U CN 220296980U CN 202223514016 U CN202223514016 U CN 202223514016U CN 220296980 U CN220296980 U CN 220296980U
- Authority
- CN
- China
- Prior art keywords
- aluminum
- machine head
- planetary gear
- reduction gearbox
- spring
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- 230000005540 biological transmission Effects 0.000 claims abstract description 31
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 28
- 230000009467 reduction Effects 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000010937 tungsten Substances 0.000 claims abstract description 8
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 8
- 230000017525 heat dissipation Effects 0.000 claims description 6
- 239000010687 lubricating oil Substances 0.000 claims description 6
- 238000013016 damping Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 9
- 239000004411 aluminium Substances 0.000 description 8
- 230000035939 shock Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Retarders (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model discloses a brushless impact electric wrench which comprises a machine body, wherein the machine body comprises an all-aluminum machine head and a switch, the other end of the all-aluminum machine head is fixedly connected with a reduction gearbox, a sealing gasket is arranged at the joint of the all-aluminum machine head and the reduction gearbox, an opening for a tungsten steel rotating shaft to pass through is formed in one end of the all-aluminum machine head, a rotor and a stator are arranged in a rear shell connected with the reduction gearbox, and the rotor drives an impact block assembly to rotate through a planetary gear set. The radial component force of centrifugal inertia force and tooth profile reaction force generated by the uniformly distributed planetary wheel due to revolution can be balanced with each other, so that the main shaft is small in stress and high in transmission power. In addition, because the internal gear is adopted, the transmission space is fully utilized, the input and output shafts are on the same straight line, the torque is improved, and the transmission ratio is increased.
Description
Technical Field
The utility model relates to the technical field of electric wrenches, in particular to a brushless impact electric wrench.
Background
The brushless electric wrench controls the phase change, the speed reduction and the speed regulation of the electric wrench by a digital circuit, thereby solving the problem that the service life of the electric wrench with brush can not be exceeded. The existing brushless electric wrench principle is that when a motor runs, a rotor drives a planetary gear set, and the planetary gear set drives an impact block assembly to rotate so as to impact an output shaft to output impact torque.
The existing brushless electric wrench can encounter the following problems during manufacturing: the direct contact between the head shell and the reduction gearbox can generate gaps due to machining errors, so that lubricating oil in the reduction gearbox is leaked. Affecting the service life of the machine. In addition, most of the existing transmission parts are single-layer transmission mechanisms, the transmission ratio of products is small, and the torque of the products is small. The working efficiency is reduced.
Disclosure of Invention
The utility model aims to provide a brushless impact electric wrench which solves the technical problems raised by the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a brushless impact electric wrench. The novel all-aluminum machine comprises a machine body, wherein the machine body comprises an all-aluminum machine head and a switch, the other end of the all-aluminum machine head is fixedly connected with a reduction gearbox, a sealing gasket is arranged at the joint of the all-aluminum machine head and the reduction gearbox, an opening for a tungsten steel rotating shaft to pass through is formed in one end of the all-aluminum machine head, a rotor and a stator are arranged in a rear shell connected with the reduction gearbox, and the rotor drives an impact block group to rotate through a planetary gear set.
Optionally, the impact block assembly comprises a groove matched with a spring and is in transmission connection with the spring, and one end of the spring is fixedly provided with a striking block;
the other end of spring installs the spring supporting seat, the inside of spring supporting seat is provided with the transmission shaft, through whole with current drive assembly, split it into spring supporting seat and transmission shaft combination form, the one end of transmission shaft with planetary gear set looks fixed connection.
Alternatively, the number of the planetary gear sets is two, two planetary gear sets are arranged in the impact block assembly in a vertically arranged manner, and the planetary gear sets comprise a plurality of gears.
Optionally, a large air port heat dissipation groove is formed in the outer wall of the rear shell of the machine body.
Optionally, reducing gear box and full aluminium aircraft nose junction are provided with the recess near the outside, are provided with the boss that matches with the recess on the full aluminium aircraft nose, set up the recess and be convenient for the boss card on the recess, can be better prevent that lubricating oil in the reducing gear box from revealing, be provided with sealed pad between boss and recess in addition, fixed sealed pad that can be better.
Optionally, the damping air bags are added on the upper part and the lower part of the stator, the buffer part is added at the position of the handle at the bottom of the machine body, and the risk of damage to the machine body when the machine falls is improved.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the utility model, the sealing gasket is arranged at the fixed connection position of the all-aluminum machine head and the reduction gearbox, and the gap between the all-aluminum machine head and the reduction gearbox is filled up through compression deformation of the sealing gasket, so that the condition of preventing lubricating oil in the reduction gearbox from leaking is achieved, and the anti-leakage device has the advantages of good anti-leakage effect and simple structure.
2. The utility model has the advantages that the planetary gears which are uniformly distributed are arranged, so that centrifugal inertial force generated by the common rotation and radial component force of reaction force between tooth profiles can be balanced, and the main shaft is small in stress and high in transmission power. In addition, because the internal gear is adopted, the transmission space is fully utilized, the input and output shafts are on the same straight line, the torque is improved, the transmission ratio is increased, and the service performance of the machine is improved.
3. The machine head is made of all-aluminum materials, the rotating shaft is made of tungsten steel materials, and the machine head is high in hardness, high in melting point, durable and resistant to falling.
4. According to the utility model, the large air duct radiating grooves are formed in the shell, so that the temperature of the machine is effectively reduced, the ventilation and the heat dissipation of the motor can be realized, the performance of the motor is improved, and the service life of the motor is longer.
5. According to the utility model, the damping air bags are added to the upper part and the lower part of the stator, so that the vibration of the motor during working is reduced, the buffer part is added to the handle position at the bottom of the body, and the risk of body damage during falling is improved.
Drawings
FIG. 1 is an isometric view of a construction of the present utility model;
FIG. 2 is a cross-sectional view of the structure of the present utility model;
FIG. 3 is a schematic view of the internal structure of the impact block assembly of the present utility model.
In the figure: 1. a body; 2. a tungsten steel rotating shaft; 3. all-aluminum machine head; 4. an impact block assembly; 5. a reduction gearbox; 6. a heat sink; 7. a planetary gear set; 8. a spring support base; 9. a spring; 10. a sealing gasket; 11. a transmission shaft; 12. a shock absorbing air bag; 13. a stator; 14. a rotor; 15. a striking block; 16. and (3) a switch.
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.
Embodiment one:
referring to fig. 1 to 3, the present utility model provides a technical solution: the utility model provides a brushless impact electric wrench, fuselage 1 includes full aluminium aircraft nose 3 and switch 16, the other end and the reducing gear box 5 fixed connection of full aluminium aircraft nose 3, full aluminium aircraft nose 3 with the reducing gear box 5 junction is provided with sealed pad 10, and the one end of full aluminium aircraft nose is provided with the opening that is used for tungsten steel pivot 2 to pass through, is provided with rotor 14 and stator 13 in the backshell that reducing gear box 5 connects, and rotor 14 passes through planetary gear set 7 and drives impact block subassembly 4 rotation.
More specifically, in the present embodiment: firstly, a switch 16 is turned on, when the motor runs, a rotor 14 drives a planetary gear set 7, and motion and power are simultaneously transmitted through planetary gears uniformly distributed in the planetary gear set 7, and impact torque force is output by rotating an impact tungsten steel rotating shaft 2.
Embodiment two:
the impact block assembly comprises a groove matched with the spring 9 and is in transmission connection through the spring 9, and a striking block 15 is fixedly arranged at one end of the spring 9;
the other end of the spring 9 is provided with a spring supporting seat 8, a transmission shaft 11 is arranged in the spring supporting seat 8, the existing transmission assembly is split into a combination form of the spring supporting seat 8 and the transmission shaft 11 through the whole, and one end of the transmission shaft 11 is fixedly connected with the planetary gear set 7.
More specifically, in the present embodiment: when the load increases, the planetary gear set 7 moves in the axial direction of the drive shaft 11 while driving the drive shaft 11 to rotate.
Embodiment III:
the number of the planetary gear sets 7 is two, two planetary gear sets 7 are provided in the inside of the impact block assembly 4 in a vertically arranged manner, and the planetary gear sets 7 include a plurality of gears.
More specifically, in the present embodiment: the load is shared by a plurality of identical planetary gears uniformly distributed around the central wheel, so that the load borne by each gear is smaller, a symmetrical split transmission structure is adopted, the planetary gears uniformly distributed are adopted, the reaction forces acting on the central wheel and the rotating arm bearings are balanced mutually, the transmission efficiency is improved, finally, the inertia forces of the planetary gear sets and the transmission shafts are balanced mutually, the number of teeth involved in meshing is increased, the transmission motion is stable, the shock resistance and vibration resistance are strong, and the work is reliable.
Embodiment four:
the outer wall of the rear shell of the machine body 1 is provided with a large air port heat dissipation groove 6.
More specifically, in the present embodiment: the large air port heat dissipation groove 6 is formed, so that the machine temperature is effectively reduced, ventilation and heat dissipation of the motor can be realized, the motor performance is improved, and the service life is longer.
Fifth embodiment:
the reduction gearbox 5 is provided with the recess with full aluminium aircraft nose 3 junction in being close to the outside, is provided with the boss that matches with the recess on the full aluminium aircraft nose 3, sets up the recess and is convenient for the boss card on the recess, can be better prevent that lubricating oil in the reduction gearbox 5 from revealing, is provided with sealed pad 10 between boss and recess in addition, fixed sealed pad 10 that can be better.
More specifically, in the present embodiment: the gap between the aluminum machine head and the reduction gearbox is filled through compression deformation of the sealing gasket, so that the condition of preventing leakage of lubricating oil in the reduction gearbox is achieved, and the sealing gasket has the advantages of being good in leakage-proof effect and simple in structure.
Example six:
the damping air bags 12 are added on the upper part and the lower part of the stator 13, the buffer parts are added at the handle position at the bottom of the machine body 1, and the risk of the machine body 1 being damaged when falling is improved.
More specifically, in the present embodiment: through all increasing shock attenuation gasbag about the given stator, reduce the during operation to the vibration of motor, extension motor's life.
Working principle: firstly, a switch 16 is turned on, when the motor runs, a rotor 14 drives a planetary gear set 7, and motion and power are simultaneously transmitted through planetary gears uniformly distributed in the planetary gear set 7, and impact torque force is output by rotating an impact tungsten steel rotating shaft 2. The centrifugal inertial force generated by the planetary gears due to the revolution and the radial component force of the reaction force between tooth profiles can be balanced, so that the main shaft is small in stress and high in transmission power. In addition, because the internal gear is adopted, the transmission space is fully utilized, the input and output shafts are on the same straight line, the torque is improved, and the transmission ratio is increased.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A brushless impact electric wrench, comprising a body (1), characterized in that: the machine body (1) comprises an all-aluminum machine head (3) and a switch (16), the other end of the all-aluminum machine head (3) is fixedly connected with a reduction gearbox (5), a sealing gasket (10) is arranged at the joint of the all-aluminum machine head (3) and the reduction gearbox (5), an opening for a tungsten steel rotating shaft (2) to pass through is formed in one end of the all-aluminum machine head (3), a rotor (14) and a stator (13) are arranged in a rear shell connected with the reduction gearbox (5), and the rotor (14) drives an impact block assembly (4) to rotate through a planetary gear set (7);
the number of the planetary gear sets (7) is two, the two planetary gear sets (7) are arranged in the impact block assembly (4) in a vertical arrangement mode, and the planetary gear sets (7) comprise a plurality of gears;
the damping air bags (12) are added to the handle at the bottom of the machine body (1), the damping air bags (12) are added to the upper portion and the lower portion of the stator (13), the risk of damage to the machine body (1) when the machine falls is improved, and the large air opening heat dissipation groove (6) is formed in the outer wall of the rear shell of the machine body (1).
2. A brushless impact wrench as claimed in claim 1, wherein: the impact block assembly (4) comprises a groove matched with the spring (9) and is in transmission connection through the spring (9), and a striking block (15) is fixedly arranged at one end of the spring (9);
the other end of the spring (9) is provided with a spring supporting seat (8), a transmission shaft (11) is arranged in the spring supporting seat (8), the existing transmission assembly is integrally split into a combination form of the spring supporting seat (8) and the transmission shaft (11), and one end of the transmission shaft (11) is fixedly connected with the planetary gear set (7).
3. A brushless impact wrench as claimed in claim 1, wherein: the reducing gear box (5) is provided with the recess with all-aluminum aircraft nose (3) junction and be close to the outside, is provided with the boss that matches with the recess on all-aluminum aircraft nose (3), sets up the recess and is convenient for the boss card on the recess, can be better prevent lubricating oil leakage in reducing gear box (5), is provided with sealed pad (10) between boss and recess in addition, fixed sealed pad (10) that can be better.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223514016.3U CN220296980U (en) | 2022-12-28 | 2022-12-28 | Brushless impact electric wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223514016.3U CN220296980U (en) | 2022-12-28 | 2022-12-28 | Brushless impact electric wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220296980U true CN220296980U (en) | 2024-01-05 |
Family
ID=89372712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223514016.3U Active CN220296980U (en) | 2022-12-28 | 2022-12-28 | Brushless impact electric wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220296980U (en) |
-
2022
- 2022-12-28 CN CN202223514016.3U patent/CN220296980U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |