CN202165468U - Motor shaft with mandrel gear - Google Patents
Motor shaft with mandrel gear Download PDFInfo
- Publication number
- CN202165468U CN202165468U CN2011202097906U CN201120209790U CN202165468U CN 202165468 U CN202165468 U CN 202165468U CN 2011202097906 U CN2011202097906 U CN 2011202097906U CN 201120209790 U CN201120209790 U CN 201120209790U CN 202165468 U CN202165468 U CN 202165468U
- Authority
- CN
- China
- Prior art keywords
- gear
- motor shaft
- footstalk
- shaft
- mandrel
- 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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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model discloses a motor shaft with a mandrel gear. A pinion which achieves first stage transmission ratio of an existing gear reducer motor generally adopts a sleeve gear structure. If a user wants to achieve a large first stage transmission ratio, box volume of the gear reducer motor must be enlarged, and accordingly manufacture cost can be increased. The motor shaft with the mandrel gear is characterized in that a shaft extending portion of the motor shaft is provided with an axial inner hole. The top of the axial inner hole is provided with an inner threaded hole, and the diameter of the inner threaded hole is smaller than that of the axial inner hole. A mandrel portion of a mandrel gear is arranged in the axial inner hole and in flat key connection with the shaft extending portion of the motor shaft, and the head portion of a bolt axially penetrates through the mandrel portion of the mandrel gear to be connected in the inner threaded hole. The mandrel gear is not limited by shaft extending diameter of the motor shaft, and the outer diameter of the mandrel gear can be designed to be very small, thereby achieving a large first stage transmission of the gear reducer motor.
Description
Technical field
The utility model relates to the gear reduction machine field, specifically a kind of motor shaft of tape spool handle gear.
Background technique
Existing gear reduction motor realizes that the small gear of first order velocity ratio generally adopts the cover toothing, and is as shown in Figure 1, promptly puts small gear at the shaft extension place of motor shaft, and with the flat key connection small gear is fixed on the motor shaft; With jump ring small gear is made axially locating with axle on motor shaft.Above-mentioned this structure, owing to limited by the motor shaft diameter of shaft, the small gear external diameter can not design very for a short time, therefore wants to realize first order big speed ratio, must strengthen the tank-volumes of gear reduction motor, thereby can improve manufacture cost.
The model utility content
The utility model technical problem to be solved is to overcome the defective that above-mentioned existing technology exists, and a kind of motor shaft of tape spool handle gear is provided, under the constant prerequisite of the tank-volumes that guarantees the gear reduction motor, to realize gear reduction motor first order big speed ratio.
For this reason; The utility model adopts following technological scheme: a kind of motor shaft of tape spool handle gear; Comprise motor shaft, it is characterized in that having an axial bore in the shaft extension portion of said motor shaft that the top of this axial bore has an interior threaded hole; The diameter of interior threaded hole is less than the diameter of axial bore; The footstalk of one footstalk gear is deployed in described axial bore, and the footstalk portion of footstalk gear adopts flat key to connect with the shaft extension portion of motor shaft, and the head shaft of a bolt is connected in the interior threaded hole after the footstalk portion of running through the footstalk gear.The utility model is through footstalk gear and motor shaft Assembly, and owing to the footstalk gear is not limited by the motor shaft diameter of shaft, so the footstalk outside diameter of gear can design very for a short time, thereby can realize gear reduction motor first order big speed ratio.
As the further of technique scheme improved and replenish, the utility model is taked following technical measures:
The motor shaft of above-mentioned tape spool handle gear is provided with the spring washer that is enclosed within on the bolt between the outer end of footstalk gear and the bolt, when motor shaft rotated, spring washer was used to prevent that bolt from loosening phenomenon taking place.
The motor shaft of above-mentioned tape spool handle gear, flat key have the oil-sealing sleeve that is enclosed within the motor shaft shaft extension portion outward, and oil-sealing sleeve guarantees that flat key is loosening when motor shaft runs up, and also can prevent that oil from getting in the motor cavity simultaneously.
The motor shaft of above-mentioned tape spool handle gear, the exterior edge face of footstalk gear also is provided with an internal thread, and internal thread makes things convenient for the dismounting of footstalk gear.
The motor shaft of above-mentioned tape spool handle gear, the footstalk portion of footstalk gear have one be used to place flat key U-groove bevel.
The utility model footstalk gear is not limited by the motor shaft diameter of shaft; The footstalk outside diameter of gear can design very for a short time, thereby has realized gear reduction motor first order big speed ratio, simultaneously; Can improve the machining accuracy of motor shaft; Thereby improved the transmission accuracy of train of gearings, improved transmission efficiency, reduced noise; Simple in structure, boundary dimension is little, installation, adjustment, easy to maintenance.
Below in conjunction with Figure of description and embodiment the utility model is described further.
Description of drawings
Fig. 1 is the existing motor shaft structural representation that adopts the cover toothing.
Fig. 2 is the structural representation of the utility model.
Fig. 3 is the structural representation of the utility model electric drive axle.
Fig. 4 is the structural representation of the utility model footstalk gear.
Fig. 5 is the plan view of Fig. 4.
Fig. 6 is the structural representation of the utility model bolt.
Embodiment
The motor shaft of the tape spool handle gear shown in Fig. 2-6; Have an axial bore 2 in the shaft extension portion of motor shaft 1; The top of this axial bore 2 has an interior threaded hole 3; The diameter of interior threaded hole 3 is less than the diameter of axial bore 2, and the footstalk of footstalk gear 4 is deployed in described axial bore 2, and the exterior edge face of footstalk gear also is provided with an internal thread 9.The head shaft of bolt 6 is screwed onto in the interior threaded hole 3 after the footstalk portion of running through the footstalk gear; Be provided with the spring washer 7 that is enclosed within on the bolt 6 between the outer end of footstalk gear 4 and the bolt 6; The footstalk portion of footstalk gear have one be used to place flat key U-groove bevel 10; The footstalk portion of footstalk gear and the shaft extension portion of motor shaft adopt flat key 5 to connect, and flat key 5 has the oil-sealing sleeve 8 that is enclosed within the motor shaft shaft extension portion outward.
The utility model when dismounting, earlier bolt is back-outed, then with one and the screw of the screw-internal thread fit of footstalk gear exterior edge face be connected on the footstalk gear, with instrument external force is acted on the screw, the footstalk gear is pulled down from motor shaft.
Claims (5)
1. the motor shaft of tape spool handle gear; Comprise motor shaft (1); It is characterized in that having an axial bore (2) in the shaft extension portion of said motor shaft; The top of this axial bore (2) has an interior threaded hole (3), and the diameter of interior threaded hole (3) is less than the diameter of axial bore (2), and the footstalk of a footstalk gear (4) is deployed in described axial bore (2); The footstalk portion of footstalk gear adopts flat key (5) to connect with the shaft extension portion of motor shaft, and the head shaft of a bolt (6) is connected in the interior threaded hole (3) after the footstalk portion of running through the footstalk gear.
2. the motor shaft of tape spool handle gear according to claim 1 is characterized in that being provided with between outer end and the bolt of described footstalk gear the spring washer (7) that is enclosed within on the bolt (6).
3. the motor shaft of tape spool handle gear according to claim 1 and 2, it is characterized in that described flat key (5) is outer has the oil-sealing sleeve (8) that is enclosed within the motor shaft shaft extension portion.
4. the motor shaft of tape spool handle gear according to claim 3 is characterized in that the exterior edge face of said footstalk gear also is provided with an internal thread (9).
5. the motor shaft of tape spool handle gear according to claim 3, the footstalk portion that it is characterized in that said footstalk gear have one be used to place flat key U-groove bevel (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202097906U CN202165468U (en) | 2011-06-20 | 2011-06-20 | Motor shaft with mandrel gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202097906U CN202165468U (en) | 2011-06-20 | 2011-06-20 | Motor shaft with mandrel gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202165468U true CN202165468U (en) | 2012-03-14 |
Family
ID=45801294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202097906U Expired - Fee Related CN202165468U (en) | 2011-06-20 | 2011-06-20 | Motor shaft with mandrel gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202165468U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644671A (en) * | 2012-04-19 | 2012-08-22 | 无锡江南奕帆电力传动科技股份有限公司 | Split type motor output gear shaft |
| CN108418344A (en) * | 2018-03-16 | 2018-08-17 | 厦门宏发工业机器人有限公司 | A kind of axis upper link and coupling structure that motor shaft is coupled with speed reducer |
| CN108757911A (en) * | 2018-06-19 | 2018-11-06 | 东莞市东启智能设备有限公司 | A kind of bi-motor disappears gap error structure |
| CN108843772A (en) * | 2018-08-18 | 2018-11-20 | 卿茂荣 | A kind of RV speed reducer gear shaft assembling structure |
-
2011
- 2011-06-20 CN CN2011202097906U patent/CN202165468U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644671A (en) * | 2012-04-19 | 2012-08-22 | 无锡江南奕帆电力传动科技股份有限公司 | Split type motor output gear shaft |
| CN108418344A (en) * | 2018-03-16 | 2018-08-17 | 厦门宏发工业机器人有限公司 | A kind of axis upper link and coupling structure that motor shaft is coupled with speed reducer |
| CN108757911A (en) * | 2018-06-19 | 2018-11-06 | 东莞市东启智能设备有限公司 | A kind of bi-motor disappears gap error structure |
| CN108843772A (en) * | 2018-08-18 | 2018-11-20 | 卿茂荣 | A kind of RV speed reducer gear shaft assembling structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20140620 |
|
| EXPY | Termination of patent right or utility model |