CN207766096U - Double ball bearing structure gear case - Google Patents
Double ball bearing structure gear case Download PDFInfo
- Publication number
- CN207766096U CN207766096U CN201820053410.6U CN201820053410U CN207766096U CN 207766096 U CN207766096 U CN 207766096U CN 201820053410 U CN201820053410 U CN 201820053410U CN 207766096 U CN207766096 U CN 207766096U
- Authority
- CN
- China
- Prior art keywords
- ball bearing
- bearing
- bar shaped
- output shaft
- axis hole
- 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
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Abstract
The utility model is related to motor accessory technical fields,Especially a kind of double ball bearing structure gear case,Including gear housing and output shaft,Output shaft is rotatablely connected by the ball bearing of upper and lower side with gear housing,Ball bearing periphery is arranged with bearing insert,Ball bearing interference fit indentation bushing,Bearing insert is embedded in the axis hole of gear housing,Bearing insert bottom is provided with the boss circle convenient for being clamped with axis hole,Shaft hole inner wall is provided with several bar shaped fins,Boss ring outer wall offers strip groove compatible with bar shaped fin,Bar shaped fin and strip groove are evenly arranged using axis hole center as the center of circle,Bar shaped fin and strip groove are correspondingly arranged at least three groups,Replace traditional bearing by double ball bearing,Reduce the gap between output shaft and bearing,Bearing insert stability is good,Can play the role of well seal and it is wear-resistant,Extend bearing service life,The stability of rotation of output shaft is improved simultaneously.
Description
Technical field
The utility model is related to motor accessory technical field, especially a kind of double ball bearing structure gear case.
Background technology
The general two oiliness bearing support rotatings of existing miniature gears case output shaft, output shaft and bearing fit are especially
Later stage lubricates insufficient after losing oil, and parts depreciation is big, and gearbox life is short, and another output shaft and bearing fit radial clearance are big, calmly
Position precision is not high, limits application of the miniature gears case in long-life, high-precision product field.
Utility model content
In order to overcome the shortcomings of that existing bearing wear causes greatly service life short, the utility model provides a kind of double rollings
Pearl bearing arrangement gear-box, by being solved the problems, such as with the matched double ball bearing of bearing insert.
Technical solution adopted by the utility model to solve its technical problems is：A kind of double ball bearing structure gear case,
Including gear housing and output shaft, output shaft is rotatablely connected by the ball bearing of upper and lower side with gear housing, outside ball bearing
It encloses and is arranged with bearing insert, ball bearing interference fit indentation bushing, bearing insert is embedded in the axis hole of gear housing, ball
The gap of bearing is small so that output shaft stability of rotation is good.
Further, including bearing insert bottom is provided with the boss circle convenient for being clamped with axis hole.
Further, including shaft hole inner wall is provided with several bar shaped fins, and boss ring outer wall offers and bar shaped fin phase
The strip groove of adaptation, shaggy block inlay setting, and stability is good.
Further, including bar shaped fin and strip groove are evenly arranged using axis hole center as the center of circle.
Further, including bar shaped fin and strip groove are correspondingly arranged at least three groups so that it is firm to be embedded.
The utility model has the beneficial effects that replacing traditional bearing by double ball bearing, output shaft and axis are reduced
Gap between holding, bearing insert stability is good, can play the role of well seal and it is wear-resistant, extend bearing service life,
The stability of rotation of output shaft is improved simultaneously.
Description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the axis hole schematic diagram of the utility model；
Fig. 3 is the boss circle schematic diagram of the utility model.
1. gear housing in figure, 2. output shafts, 3. ball bearings, 4. bearing inserts, 5. boss circles, 6. bar shaped fins, 7.
Strip groove.
Specific implementation mode
If Fig. 1 is the structural schematic diagram of the utility model, a kind of double ball bearing structure gear case, including gear housing 1
With output shaft 2, output shaft 2 is rotatablely connected by the ball bearing 3 of upper and lower side with gear housing 1, and 3 periphery of ball bearing is arranged with
Bearing insert 4, the interference fit indentation bearing insert 4 of ball bearing 3, bearing insert 4 are embedded in the axis hole of gear housing 1, axis
It holds 4 bottom of bushing and is provided with the boss circle 5 for being convenient for being clamped with axis hole.One is embedded in the axis hole of lower clamp plate on gear housing 1
Ball bearing 3 is interference fitted indentation bearing insert 4 by bearing insert 4, and the rotation of output shaft 2 turns by the rolling of ball bearing 3
Dynamic, ball bearing 3 is one kind of rolling bearing, and spherical alloy steel ball is mounted on to the centre of interior steel ring and outer rim, to roll
For mode come the transmission efficiency for reducing the frictional force in power transmission process with improving machine power, gap is small, and the service life is high so that
Stationarity is good when output shaft 2 rotates, and is fixedly connected with axis hole by boss circle 5 so that stable connection is firm.
As shown in Figures 2 and 3, shaft hole inner wall is provided with several bar shaped fins 6, and 5 outer wall of boss circle offers and bar shaped fin 6
Compatible strip groove 7, bar shaped fin 6 and strip groove 7 are evenly arranged using axis hole center as the center of circle, bar shaped fin 6 and item
Connected in star 7 is correspondingly arranged at least three groups.The boss circle 5 of outer wall belt strip groove 7 and the bar shaped fin 6 of shaft hole inner wall are inlayed
Fixed, ball bearing 3 is then consolidated and is erected above axis hole, easy for installation, stable connection.
It is described above to be merely exemplary for the utility model, and not restrictive, those of ordinary skill in the art
Understand, in the case where not departing from spirit and scope as defined in the appended claims, many modifications can be made, change or wait
Effect, but all will fall within the protection scope of the utility model.
Claims (5)
1. a kind of double ball bearing structure gear case, including gear housing（1）And output shaft（2）, characterized in that the output shaft
（2）Pass through the ball bearing of upper and lower side（3）With gear housing（1）Rotation connection, ball bearing（3）Periphery is arranged with bearing insert
（4）, ball bearing（3）Interference fit indentation bearing insert（4）, bearing insert（4）It is embedded in gear housing（1）Axis hole in.
2. double ball bearing structure gear case according to claim 1, characterized in that the bearing insert（4）Bottom is set
It is equipped with the boss circle convenient for being clamped with axis hole（5）.
3. double ball bearing structure gear case according to claim 2, characterized in that the shaft hole inner wall is provided with several
Bar shaped fin（6）, boss circle（5）Outer wall offers and bar shaped fin（6）Compatible strip groove（7）.
4. double ball bearing structure gear case according to claim 3, characterized in that the bar shaped fin（6）And bar shaped
Groove（7）It is evenly arranged using axis hole center as the center of circle.
5. double ball bearing structure gear case according to claim 4, characterized in that the bar shaped fin（6）And bar shaped
Groove（7）It is correspondingly arranged at least three groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820053410.6U CN207766096U (en) | 2018-01-12 | 2018-01-12 | Double ball bearing structure gear case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820053410.6U CN207766096U (en) | 2018-01-12 | 2018-01-12 | Double ball bearing structure gear case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207766096U true CN207766096U (en) | 2018-08-24 |
Family
ID=63183841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820053410.6U Expired - Fee Related CN207766096U (en) | 2018-01-12 | 2018-01-12 | Double ball bearing structure gear case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207766096U (en) |
-
2018
- 2018-01-12 CN CN201820053410.6U patent/CN207766096U/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: 20180824 Termination date: 20200112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |