CN112815046A - Differential gear speed reduction steering engine with compact structure and differential gear speed reduction structure - Google Patents
Differential gear speed reduction steering engine with compact structure and differential gear speed reduction structure Download PDFInfo
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- CN112815046A CN112815046A CN202110106508.XA CN202110106508A CN112815046A CN 112815046 A CN112815046 A CN 112815046A CN 202110106508 A CN202110106508 A CN 202110106508A CN 112815046 A CN112815046 A CN 112815046A
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- gear ring
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- 230000009467 reduction Effects 0.000 title claims abstract description 41
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 14
- 238000004512 die casting Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000006872 improvement Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a differential gear speed reduction steering engine with a compact structure, which comprises a rotary power device, wherein the rotary power device is connected with a speed reduction gear set through a differential gear speed reducer, and the speed reduction gear set is connected with an output gear; the differential gear speed reducer comprises a sun gear connected with a power output shaft of the rotary power device, the sun gear is meshed with a planet gear, the planet gear is arranged on a planet carrier, and the planet gear is meshed with a first inner gear ring and a second inner gear ring; the first inner gear ring is fixedly connected with a shell of the rotary power device; the number of teeth of the second inner gear ring is less than that of the first inner gear ring; the second internal ring gear is connected to a reduction gear set. The differential gear speed reducing structure is small in size, so that a larger speed reducing ratio can be obtained without increasing the overall size of the steering engine, and the manufacturing cost of the conventional elastic sheet is effectively reduced through the special clutch structure.
Description
The technical field is as follows:
the invention belongs to the field of machinery, and particularly relates to a differential gear speed reduction steering engine with a compact structure and a differential gear speed reduction structure.
Background art:
the steering engine is a position (angle) servo driver and is suitable for control systems which need to change and maintain the angle continuously. The remote control toy is widely applied to high-grade remote control toys, such as airplane models and submarine models, and remote control robots. The steering engine is in order to increase control accuracy and improve output torque, can install the speed reduction structure usually, but current speed reduction structure will obtain big reduction ratio, the speed reduction structure that needs the volume to beat usually, this can lead to the whole bulky of steering engine too big, consequently can not use the device that the installation area is limited, like aeronautical structure, partial small toy and robot etc.. In addition, the annular elastic sheet in the conventional protection clutch device is integrally cast, but the manufacturing method has high cost and low manufacturing efficiency.
The invention content is as follows:
the differential gear speed reducing steering engine is small in size, so that a larger speed reducing ratio can be obtained under the condition that the whole size of the steering engine is not increased, and the manufacturing cost of the conventional elastic sheet is effectively reduced through a special clutch structure.
In order to solve the problems, the technical scheme of the invention is as follows:
a differential gear speed reduction steering engine with a compact structure comprises a rotary power device, wherein the rotary power device is connected with a speed reduction gear set through a differential gear speed reducer, and the speed reduction gear set is connected with an output gear; the differential gear speed reducer comprises a sun gear connected with a power output shaft of the rotary power device, the sun gear is meshed with a planet gear, the planet gear is arranged on a planet carrier, and the planet gear is meshed with a first inner gear ring and a second inner gear ring; the first inner gear ring is fixedly connected with a shell of the rotary power device; the number of teeth of the second inner gear ring is less than that of the first inner gear ring; the second internal ring gear is connected to a reduction gear set.
In a further improvement, the second internal gear ring has 1-5 fewer teeth than the first internal gear ring.
In a further improvement, the reduction gear set is connected with the output gear through a clutch structure.
In a further refinement, the clutching structure includes an externally annular gear in meshing engagement with a reduction gear set; the output gear is connected with an output shaft, and the output shaft is connected with a transmission shaft positioned in the inner cavity of the annular outer gear through a spline; the end surface of the transmission shaft is convexly provided with at least two groups of elastic sheet fixing structures along the axial direction; the elastic sheet fixing structures are arranged along the circumferential direction of the transmission shaft; each group of elastic sheet fixing structures comprises three mounting columns, and T-shaped mounting grooves are formed among the three mounting columns; an arc-shaped elastic sheet is arranged between the adjacent elastic sheet fixing structures; the arc-shaped elastic piece comprises an arc-shaped part at the middle part, and a spherical bulge is formed at the middle part of the arc-shaped part in a convex manner; l-shaped mounting pieces clamped in the T-shaped mounting grooves are formed at two ends of the arc-shaped part; a spherical surface-shaped groove matched with the spherical surface-shaped bulge is formed on the inner wall of the annular outer gear; the arc-shaped elastic piece is made of metal through die casting.
In a further improvement, the elastic sheet fixing structures are four groups and are uniformly arranged along the circumferential direction of the transmission shaft.
In a further improvement, the arc-shaped elastic piece is manufactured and formed by die casting.
The improved rotary power device is characterized in that a mounting ring is fixed to the top of the rotary power device, a clamping groove is formed in the mounting ring, and a clamping convex block matched with the clamping groove is formed in the first inner gear ring in a downward protruding mode.
In a further improvement, the rotary power device is a motor.
A differential gear speed reduction structure comprises a sun gear, wherein the sun gear is meshed with a planet gear, the planet gear is arranged on a planet carrier, and the planet gear is meshed with a first inner gear ring and a second inner gear ring; the number of teeth of the second inner gear ring is less than that of the first inner gear ring; the second internal ring gear is connected to a reduction gear set.
The invention has the advantages that:
the differential gear speed reducing structure is small in size, so that a larger speed reducing ratio can be obtained without increasing the overall size of the steering engine, and the manufacturing cost of the conventional elastic sheet is effectively reduced through the special clutch structure.
Description of the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a connection structure of a planet wheel and a first inner ring gear;
FIG. 3 is a schematic top view of the structure of FIG. 2;
FIG. 4 is a schematic view of a connection structure of a planet wheel and a second internal gear ring;
FIG. 5 is a schematic structural view of an end face of a transmission shaft;
fig. 6 is a schematic structural diagram of a clutch structure.
The specific implementation mode is as follows:
in order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
Example 1
As shown in fig. 1-6, the differential gear reduction steering engine with a compact structure comprises a rotary power device 1, wherein the rotary power device 1 is connected with a reduction gear set 3 through a differential gear reducer 2, and the reduction gear set 3 is connected with an output gear 4; the differential gear speed reducer 2 comprises a sun gear 5 connected with a power output shaft of the rotary power device 1, the sun gear 5 is meshed with a planet gear 6, the planet gear 6 is arranged on a planet carrier 21, and the planet gear 6 is meshed with a first inner gear ring 7 and a second inner gear ring 8; the first internal gear ring 7 is fixedly connected with the shell of the rotary power device 1; the number of teeth of the second inner gear ring 8 is less than that of the first inner gear ring 7; the second internal ring gear 8 is connected to the reduction gear set 3.
The second inner ring gear 8 has 1-5 fewer teeth than the first inner ring gear 7.
The reduction gear set 3 is connected with the output gear 4 through a clutch structure.
The clutch structure includes an external annular gear 9 meshed with the reduction gear set 3; the output gear 4 is connected with an output shaft 10, and the output shaft 10 is connected with a transmission shaft 11 in the inner cavity of the annular external gear 9 through a spline; the end surface of the transmission shaft 11 is convexly provided with at least two groups of elastic sheet fixing structures along the axial direction; the elastic sheet fixing structures are arranged along the circumferential direction of the transmission shaft 11; each group of elastic sheet fixing structures comprises three mounting columns 12, and T-shaped mounting grooves 13 are formed among the three mounting columns 12; an arc-shaped elastic sheet 14 is arranged between the adjacent elastic sheet fixing structures; the arc-shaped elastic piece 14 comprises an arc-shaped part 15 at the middle part, and a spherical bulge 16 is convexly formed at the middle part of the arc-shaped part 15; l-shaped mounting pieces 17 clamped in the T-shaped mounting grooves 13 are formed at two ends of the arc-shaped part 15; a spherical groove 22 matched with the spherical bulge 16 is formed on the inner wall of the annular external gear 9; the arc-shaped elastic piece 14 is made of metal by die casting.
The elastic sheet fixing structures are four groups and are uniformly arranged along the circumferential direction of the transmission shaft 11.
The arc-shaped elastic piece 14 is manufactured and formed by die casting.
The top of the rotary power device 1 is fixed with a mounting ring 18, the mounting ring 18 is provided with a clamping groove 19, and the first inner gear ring 7 is provided with a clamping convex block 20 matched with the clamping groove 19 in a downward protruding manner. The rotary power unit 1 is a motor.
The using method of the invention is as follows:
the motor drives the sun gear to rotate when rotating, the sun gear drives the planet gear to rotate in a self-transmission manner, the planet carrier drives the planet gear to revolve, and because the first inner gear ring and the second inner gear ring have tooth differences, the planet gear can drive the second inner gear ring 8 to rotate when revolving, and transmission with a large reduction ratio is carried out. When the output torque is too large, the spherical protrusions 16 and the spherical grooves 22 slide relatively, so that the motor and the rotating shaft are protected. And the arc-shaped elastic piece 14 is formed by metal die-casting, so that the manufacturing efficiency is effectively improved, and the cost is reduced.
The above-mentioned embodiment is only a specific embodiment of the present invention, and is not meant to be a limitation of the present invention, and any simple modification and replacement thereof are within the scope of the present invention.
Claims (9)
1. A differential gear speed reduction steering engine with a compact structure is characterized by comprising a rotary power device (1), wherein the rotary power device (1) is connected with a speed reduction gear set (3) through a differential gear speed reducer (2), and the speed reduction gear set (3) is connected with an output gear (4); the differential gear speed reducer (2) comprises a sun gear (5) connected with a power output shaft of the rotary power device (1), the sun gear (5) is meshed with a planet gear (6), the planet gear (6) is installed on a planet carrier (21), and the planet gear (6) is meshed with a first inner gear ring (7) and a second inner gear ring (8); the first inner gear ring (7) is fixedly connected with a shell of the rotary power device (1); the number of teeth of the second inner gear ring (8) is less than that of the first inner gear ring (7); the second internal gear ring (8) is connected with the reduction gear set (3).
2. A compact differential gear reduction steering engine according to claim 1, characterized in that the number of teeth of the second internal gear ring (8) is 1-5 less than the number of teeth of the first internal gear ring (7).
3. The differential gear reduction steering engine with compact structure according to claim 1, characterized in that the reduction gear set (3) is connected with the output gear (4) through a clutch structure.
4. A compact differential reduction steering engine according to claim 3, wherein said clutching arrangement comprises an external annular gear (9) meshing with the reduction gear set (3); the output gear (4) is connected with an output shaft (10), and the output shaft (10) is connected with a transmission shaft (11) in the inner cavity of the annular outer gear (9) through a spline; the end surface of the transmission shaft (11) is convexly provided with at least two groups of elastic sheet fixing structures along the axial direction; the elastic sheet fixing structures are arranged along the circumferential direction of the transmission shaft (11); each group of elastic sheet fixing structures comprises three mounting columns (12), and T-shaped mounting grooves (13) are formed among the three mounting columns (12); an arc-shaped elastic sheet (14) is arranged between the adjacent elastic sheet fixing structures; the arc-shaped elastic piece (14) comprises an arc-shaped part (15) at the middle part, and a spherical bulge (16) is formed at the middle part of the arc-shaped part (15) in a convex manner; l-shaped mounting pieces (17) clamped in the T-shaped mounting grooves (13) are formed at two ends of the arc-shaped part (15); a spherical groove (22) matched with the spherical bulge (16) is formed on the inner wall of the annular external gear (9); the arc-shaped elastic piece (14) is made of metal through die casting.
5. The differential gear deceleration steering engine with compact structure according to claim 1, wherein the spring plate fixing structures are four groups and are uniformly arranged along the circumferential direction of the transmission shaft (11).
6. The differential gear deceleration steering engine with compact structure as claimed in claim 1, characterized in that said arc-shaped elastic piece (14) is made by die-casting.
7. The differential gear speed reduction steering engine with compact structure according to claim 1, characterized in that a mounting ring (18) is fixed on the top of the rotary power device (1), a clamping groove (19) is formed on the mounting ring (18), and a clamping convex block (20) matched with the clamping groove (19) is formed on the first inner gear ring (7) in a downward protruding manner.
8. The differential gear deceleration steering engine with compact structure according to claim 1 is characterized in that the rotary power device (1) is a motor.
9. The differential gear speed reduction structure is characterized by comprising a sun gear (5), wherein a planet gear (6) is meshed with the sun gear (5), the planet gear (6) is installed on a planet carrier (7), and a first inner gear ring (7) and a second inner gear ring (8) are meshed with the planet gear (6); the number of teeth of the second inner gear ring (8) is less than that of the first inner gear ring (7); the second internal gear ring (8) is connected with the reduction gear set (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110106508.XA CN112815046A (en) | 2021-01-26 | 2021-01-26 | Differential gear speed reduction steering engine with compact structure and differential gear speed reduction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110106508.XA CN112815046A (en) | 2021-01-26 | 2021-01-26 | Differential gear speed reduction steering engine with compact structure and differential gear speed reduction structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112815046A true CN112815046A (en) | 2021-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110106508.XA Pending CN112815046A (en) | 2021-01-26 | 2021-01-26 | Differential gear speed reduction steering engine with compact structure and differential gear speed reduction structure |
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| Country | Link |
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| CN (1) | CN112815046A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030143042A1 (en) * | 2002-01-25 | 2003-07-31 | Doyle Michael C. | Power drill/driver |
| CN102748442A (en) * | 2012-06-01 | 2012-10-24 | 李飞宇 | Gear assembly with overload protection |
| US20140004989A1 (en) * | 2012-06-29 | 2014-01-02 | Harmonic Drive Systems, Inc. | Planetary differential reduction device |
| KR20140072725A (en) * | 2012-12-05 | 2014-06-13 | 권우영 | Planetary Gear Reducer |
| CN105805238A (en) * | 2016-04-29 | 2016-07-27 | 河南启工传动科技股份有限公司 | Speed reduction mechanism and speed reducer |
| CN206072248U (en) * | 2016-09-06 | 2017-04-05 | 深圳市优必选科技有限公司 | Speed reduction device, joint servo steering engine and robot |
| CN107191549A (en) * | 2017-07-06 | 2017-09-22 | 深圳市华宏昊科技有限公司 | A kind of planet gear reducing mechanism and its decelerator |
| CN206950118U (en) * | 2017-03-01 | 2018-02-02 | 宁波和本精密缓冲器有限公司 | A kind of automatic cover-turning device |
| CN109826875A (en) * | 2019-04-04 | 2019-05-31 | 天津思耐德精密机械有限公司 | Driver is renovated by mechanical overload protection device and deceleration mechanism and electric drive |
| US20200018358A1 (en) * | 2018-07-12 | 2020-01-16 | UBTECH Robotics Corp. | Overload protection assembly |
| CN111795120A (en) * | 2020-07-08 | 2020-10-20 | 何金仙 | Self-locking planetary reducer |
| CN215567685U (en) * | 2021-01-26 | 2022-01-18 | 东莞市德晟智能科技有限公司 | Differential gear speed reduction steering engine with compact structure and differential gear speed reduction structure |
-
2021
- 2021-01-26 CN CN202110106508.XA patent/CN112815046A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030143042A1 (en) * | 2002-01-25 | 2003-07-31 | Doyle Michael C. | Power drill/driver |
| CN102748442A (en) * | 2012-06-01 | 2012-10-24 | 李飞宇 | Gear assembly with overload protection |
| US20140004989A1 (en) * | 2012-06-29 | 2014-01-02 | Harmonic Drive Systems, Inc. | Planetary differential reduction device |
| KR20140072725A (en) * | 2012-12-05 | 2014-06-13 | 권우영 | Planetary Gear Reducer |
| CN105805238A (en) * | 2016-04-29 | 2016-07-27 | 河南启工传动科技股份有限公司 | Speed reduction mechanism and speed reducer |
| CN206072248U (en) * | 2016-09-06 | 2017-04-05 | 深圳市优必选科技有限公司 | Speed reduction device, joint servo steering engine and robot |
| CN206950118U (en) * | 2017-03-01 | 2018-02-02 | 宁波和本精密缓冲器有限公司 | A kind of automatic cover-turning device |
| CN107191549A (en) * | 2017-07-06 | 2017-09-22 | 深圳市华宏昊科技有限公司 | A kind of planet gear reducing mechanism and its decelerator |
| US20200018358A1 (en) * | 2018-07-12 | 2020-01-16 | UBTECH Robotics Corp. | Overload protection assembly |
| CN109826875A (en) * | 2019-04-04 | 2019-05-31 | 天津思耐德精密机械有限公司 | Driver is renovated by mechanical overload protection device and deceleration mechanism and electric drive |
| CN111795120A (en) * | 2020-07-08 | 2020-10-20 | 何金仙 | Self-locking planetary reducer |
| CN215567685U (en) * | 2021-01-26 | 2022-01-18 | 东莞市德晟智能科技有限公司 | Differential gear speed reduction steering engine with compact structure and differential gear speed reduction structure |
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