CN210318452U - Electric tool gear box - Google Patents
Electric tool gear box Download PDFInfo
- Publication number
- CN210318452U CN210318452U CN201921344677.1U CN201921344677U CN210318452U CN 210318452 U CN210318452 U CN 210318452U CN 201921344677 U CN201921344677 U CN 201921344677U CN 210318452 U CN210318452 U CN 210318452U
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- gear
- gear box
- output shaft
- movably connected
- rotor
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Abstract
A gear box of an electric tool comprises a gear box shell and a gear box cover, wherein an output shaft is movably connected in the middle of the gear box cover through a bearing, a movable hole is formed in the middle of the gear box shell, the end face of the output shaft is movably connected in the movable hole, and a large gear is fixedly arranged on the outer surface of the output shaft; the end face of the rotor is movably connected in the gear box shell through a bearing, a small gear is fixedly arranged on a rotor shaft of the rotor, and the small gear is meshed with the large gear; an oil baffle plate is arranged in the gear box shell corresponding to the tooth surface of the bull gear. The utility model overcomes prior art's is not enough, is kept off bounce-back to the flank of tooth by fender oil gusset after the big gear surface when lubricating grease breaks away from under the effect of centrifugal force, or on the fender oil gusset gathers on the effect of gravity on the gear engagement face of drippage down behind a certain amount of lubricating grease to gear engagement has kept the continuous lubricated effect of gear engagement.
Description
Technical Field
The utility model relates to an electric tool gear box technical field, concretely relates to electric tool gear box.
Background
With the rapid development of power tools, manufacturing costs and whether the machine is durable have become critical to product success; during operation of the power tool, it is generally necessary to add a certain amount of grease to the gear box for lubrication during gear engagement.
And the angle grinder of prior art scheme is at the operation in-process, because gear rotational speed is very high, the grease on the gear can be got rid of between gear box inner wall and the gear under the effect of centrifugal force, leads to the lubricating oil utilization ratio very low, makes the gear engagement not obtain effectual lubrication, has so both wasted the cost of manufacturing, greatly reduced lubricated effect again, also can reduce the life-span and the noise increase of gear.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art, the utility model provides an electric tool gear box has overcome the not enough of prior art, and reasonable in design can solve the lubricated harmfulness of machine gear engagement. Improve gear lubrication, promote the gear life-span, reduce the gear noise.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
a gear box of an electric tool comprises a gear box shell and a gear box cover, wherein an output shaft is movably connected in the middle of the gear box cover through a bearing, a movable hole is formed in the middle of the gear box shell, the end face of the output shaft is movably connected in the movable hole, and a large gear is fixedly installed on the outer surface of the output shaft; the end face of the rotor is movably connected in the gear box shell through a bearing, a small gear is fixedly mounted on a rotor shaft of the rotor, and the small gear is meshed with the large gear; and an oil baffle rib plate is arranged in the gear box shell at a position corresponding to the tooth surface of the bull gear.
Preferably, at least one oil baffle rib plate is arranged and uniformly distributed on the inner surface of the gearbox shell.
Preferably, the clearance between the oil baffle plate and the surface of the large gear is 0.5mm-3 mm.
The utility model provides an electric tool gear box. The method has the following beneficial effects: by arranging the oil baffle rib plate, after the lubricating grease is separated from the surface of the large gear under the action of centrifugal force, the lubricating grease is blocked by the oil baffle rib plate to bounce to the gear surface, or after a certain amount of lubricating grease is gathered on the oil baffle rib plate, the lubricating grease drops onto the gear meshing surface under the action of gravity, so that the continuous lubricating effect of gear meshing is kept.
Drawings
In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the description of the prior art will be briefly described below.
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic structural view of a gearbox housing of the present invention;
the reference numbers in the figures illustrate:
1. a gearbox housing; 2. a gearbox cover; 4. an output shaft; 5. a bull gear; 6. a movable hole; 7. a rotor; 8. a pinion gear; 9. oil baffle plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention will be combined below to clearly and completely describe the technical solutions of the present invention.
In the first embodiment, as shown in fig. 1 to 2, an electric tool gear box comprises a gear box shell 1 and a gear box cover 2, wherein an output shaft 4 is movably connected to the middle of the gear box cover 2 through a bearing, a movable hole 6 is formed in the middle of the gear box shell 1, the end surface of the output shaft 4 is movably connected to the inside of the movable hole 6, and a large gear 5 is fixedly mounted on the outer surface of the output shaft 4; the end face of the rotor 7 is movably connected in the gearbox shell 1 through a bearing, a small gear 8 is fixedly arranged on a rotor shaft of the rotor 7, and the small gear 8 is meshed with the large gear 5; an oil baffle rib plate 9 is arranged in the gear box shell 1 corresponding to the tooth surface of the big gear 5.
Therefore, when the machine runs, the motor rotates to drive the pinion 8 to rotate and is meshed with the large gear 5, after a certain amount of lubricating grease is added into the gear box shell 1, the lubricating grease is separated from the surface of the large gear 5 under the action of centrifugal force and then is blocked by the oil blocking rib plate 9 to rebound to the tooth surface, or the lubricating grease which is gathered on the oil blocking rib plate 9 to a certain amount drops to the gear meshing surface under the action of gravity, so that the effect of continuous lubrication of gear meshing is kept.
In the second embodiment, based on the further improvement of the first embodiment, 3 oil baffle plates 9 are arranged and uniformly distributed on the inner surface of the gearbox shell 1. By the action of the oil baffle rib plates 9, more grease which is separated by the action of centrifugal force can be blocked by the oil baffle rib plates 9.
In the third embodiment, based on the further improvement of the first embodiment, the gap between the oil baffle plate 9 and the surface of the bull gear 5 is 1 mm. The gap between the oil baffle rib plate 9 and the surface of the big gear 5 is small, so that lubricating grease which is separated from the big gear 5 can be prevented from being thrown to the inner wall of the gear box along the gap, and the utilization rate of the lubricating oil is reduced.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (3)
1. The utility model provides an electric tool gear box, includes gear box casing (1) and gear box lid (2), its characterized in that: an output shaft (4) is movably connected in the middle of the gearbox cover (2) through a bearing (3), a movable hole (6) is formed in the middle of the gearbox shell (1), the end face of the output shaft (4) is movably connected in the movable hole (6), and a large gear (5) is fixedly installed on the outer surface of the output shaft (4); the end face of the rotor (7) is movably connected in the gearbox shell (1) through a bearing, a small gear (8) is fixedly installed on a rotor shaft of the rotor (7), and the small gear (8) is meshed with the large gear (5); and an oil baffle rib plate (9) is arranged in the gearbox shell (1) at a position corresponding to the tooth surface of the bull gear (5).
2. A power tool gearbox according to claim 1 wherein: at least one oil baffle rib plate (9) is arranged and evenly distributed on the inner surface of the gearbox shell (1).
3. A power tool gearbox according to claim 1 wherein: the clearance between the oil baffle rib plate (9) and the surface of the bull gear (5) is 0.5mm-3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921344677.1U CN210318452U (en) | 2019-08-19 | 2019-08-19 | Electric tool gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921344677.1U CN210318452U (en) | 2019-08-19 | 2019-08-19 | Electric tool gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210318452U true CN210318452U (en) | 2020-04-14 |
Family
ID=70130399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921344677.1U Active CN210318452U (en) | 2019-08-19 | 2019-08-19 | Electric tool gear box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210318452U (en) |
-
2019
- 2019-08-19 CN CN201921344677.1U patent/CN210318452U/en active Active
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