CN211557070U - Outer rotor planetary reduction steering engine and robot - Google Patents
Outer rotor planetary reduction steering engine and robot Download PDFInfo
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- CN211557070U CN211557070U CN202020448756.3U CN202020448756U CN211557070U CN 211557070 U CN211557070 U CN 211557070U CN 202020448756 U CN202020448756 U CN 202020448756U CN 211557070 U CN211557070 U CN 211557070U
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Abstract
The utility model discloses an external rotor planet speed reduction steering wheel and robot, external rotor planet speed reduction steering wheel includes: a body; locate the motor element on the body, motor element includes: a stator arranged on the body; the rotor is arranged on the outer ring of the stator; the sun wheel is arranged on the rotor and penetrates through the stator in the axial direction; and wear to locate the ascending speed reduction subassembly of axial direction of stator, the speed reduction subassembly is including exposing the planet carrier of locating body one side and being used for the output moment of torsion to and the planet wheel subassembly of power connection between sun gear and planet carrier. The end side of the sun gear, which is close to the planet carrier, is rotationally connected with the planet carrier, and the end side of the rotor, which is far from the planet carrier, is rotationally connected with the body. Locate the motor element with the speed reduction subassembly in to improve the compactedness of steering wheel, make the steering wheel volume more miniaturized, application scope enlarges. In addition, the rotor is supported on the planet carrier and the body, so that two end sides of the rotor are stabilized, and the stability and the reliability are improved.
Description
Technical Field
The utility model relates to a steering wheel technical field especially relates to an outer rotor planet speed reduction steering wheel and robot.
Background
With the continuous development of the machinery manufacturing industry, the steering engine is more and more widely applied. However, the existing steering engine is generally formed by connecting an independent motor and a speed reducer, has a large integral size, is mostly of a cuboid structure, and cannot meet the requirements of certain specific use environments.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an outer rotor planet speed reduction steering wheel and robot.
The utility model provides a following technical scheme, an external rotor planet speed reduction steering wheel, include:
a body;
locate motor element on the body, motor element includes: the stator is arranged on the body; the rotor is arranged on the outer ring of the stator; the sun wheel is arranged on the rotor and penetrates through the stator in the axial direction; and
a speed reduction component arranged on the axial direction of the stator in a penetrating way, wherein the speed reduction component comprises a planet carrier which is exposed at one side of the body and is used for outputting torque, and a planet wheel component which is in power connection between the sun wheel and the planet carrier,
the end side of the sun gear, which is close to the planet carrier, is rotationally connected with the planet carrier, and the end side of the rotor, which is far away from the planet carrier, is rotationally connected with the body.
As a further improved outer rotor planetary reduction steering engine in the technical scheme, the end side of the sun gear, which is close to the planet carrier, is connected with the planet carrier through a first bearing in an installing mode, and the end side of the rotor, which is far away from the planet carrier, is connected with the body through a second bearing in an installing mode.
As a further improvement of the outer rotor planetary reduction steering engine in the technical scheme, the planet wheel assembly comprises an inner gear ring arranged outside the sun wheel, a plurality of planet wheels arranged between the sun wheel and the inner gear ring, and planet wheel shafts respectively arranged in the planet wheels in a penetrating way,
the planet wheel is respectively in meshed connection with the inner gear ring and the sun gear, and the planet wheel shaft is connected with the planet carrier.
As a further improvement of the technical scheme, the outer rotor planetary reduction steering engine comprises a body, wherein the body comprises a first shell and a second shell which are matched and connected with each other, a first channel for the reduction assembly to pass through is arranged on the first shell, an annular cavity for accommodating the stator and the rotor is arranged on the periphery of the first channel, and an accommodating groove for installing a second bearing is arranged on the second shell.
As a further improvement of the technical scheme, the outer rotor planetary reduction steering engine is characterized in that a third bearing is sleeved on the end side of the planet carrier close to the outer portion of the body, and the third bearing is abutted to the inner side wall of the first channel.
As a further improvement of the technical scheme, the outer rotor planetary reduction steering engine is characterized in that a fourth bearing is sleeved on the end side, close to the rotor, of the planet carrier, and the fourth bearing is abutted to the inner side wall of the first channel.
As a further improvement of the technical scheme, the outer rotor planetary reduction steering engine is characterized in that a rear cover is in threaded connection with the outer side of the second shell, a circuit board is arranged in a containing space between the second shell and the rear cover, and the circuit board is electrically connected with the stator.
As a further improvement of the outer rotor planetary reduction steering engine in the technical scheme, a magnetic encoder for detecting the rotation position of the rotor is arranged on the rotor and is electrically connected with the circuit board.
As a further improvement of the technical scheme, the outer rotor planetary reduction steering engine is characterized in that a wiring groove for passing through an electric wire is formed in the first shell, a wire outlet hole corresponding to the wiring groove is formed in the second shell, and the wire outlet hole is communicated with the accommodating space.
The utility model discloses provide a robot again, it includes the external rotor planet speed reduction steering wheel.
The beneficial effects of the utility model include at least:
1. this embodiment is rotationally connected to the body by rotationally connecting the end side of the sun gear close to the planet carrier and the end side of the rotor remote from the planet carrier. Equivalently, the rotor is supported on the planet carrier and the body, two end sides of the rotor are stabilized, so that the rotating torque generated by the rotor is completely in the middle position of the planet carrier and the body, the rotor runs more stably, and the stability and the reliability are improved.
2. Through will the speed reduction subassembly wears to locate in the first passageway, be equivalent to with the speed reduction subassembly is located in the motor element to improve the compactness of steering wheel, make the steering wheel volume more miniaturized, application scope enlarges.
3. During assembly, the rotor is firstly installed in the annular cavity of the first shell, and the planet carrier is assembled into the body through the first channel from one side of the first shell, which is far away from the second shell. The rotor and the planet carrier are not interfered with each other, and the installation is convenient. When the planet carrier and the rotor are installed on the same side, the planet carrier is installed firstly, then the rotor is installed, and due to the magnetic action of the magnet on the rotor and the silicon steel sheet of the stator, the situation that the sun wheel fixed on the rotor is difficult to align with the planet wheel on the planet carrier is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of an outer rotor planetary reduction steering engine of the present invention;
fig. 2 is an explosion schematic diagram of a first embodiment of the outer rotor planetary reduction steering engine of the present invention;
fig. 3 is a schematic structural diagram of a first embodiment of the speed reduction assembly of the present invention;
FIG. 4 is a schematic structural view showing a positional relationship between a sun gear and a rotor;
fig. 5 is a schematic structural diagram of a first embodiment of the first housing according to the present invention;
fig. 6 is a schematic structural diagram of a first embodiment of a second housing according to the present invention;
fig. 7 is a schematic structural diagram of a first embodiment of a rotor according to the present invention;
fig. 8 is another schematic structural diagram of the first embodiment of the outer rotor planetary reduction steering engine of the present invention;
reference numbers in the figures:
10-a body; 20-a motor assembly; 21-a stator; 22-a rotor; 223-protruding connection; 23-a sun gear; 30-a speed reduction assembly; 31-a planet carrier; 32-a planet wheel assembly; 311-a first bearing; 312 — a second bearing; 321-inner gear ring; 322-planet wheel; 323-planet wheel shaft; 11-a first housing; 12-a second housing; 111-a first channel; 112-ring cavity; 113-a retaining ring; 121-accommodating grooves; 221-a third bearing; 222-a fourth bearing; 100-outer rotor planetary reduction steering engine; 13-rear cover; 14-a circuit board; 15-a magnetic encoder; 114-a wiring trough; 122-outlet hole; 100-outer rotor planetary reduction steering engine; 115-a first male mounting portion; 123-first male mounting portion.
Detailed Description
In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The following further describes embodiments of the present invention with reference to the drawings.
Example one
Referring to fig. 1 to 2, an outer rotor planetary reduction steering engine 100 includes: body 10, motor assembly 20, and speed reduction assembly 30.
The motor assembly 20 is disposed in the body 10, and the motor assembly 20 includes: a stator 21 provided in the body 10; a rotor 22 provided on an outer ring of the stator 21; and a sun gear 23 provided on the rotor 22 and inserted in the axial direction of the stator 21.
The speed reduction assembly 30 is arranged on the axial direction of the stator 21 in a penetrating manner, and the speed reduction assembly 30 comprises a planet carrier 31 exposed on one side of the body 10 and used for outputting torque, and a planet wheel assembly 32 in power connection between the sun wheel 23 and the planet carrier 31.
The end side of the sun gear 23 close to the planet carrier 31 is rotationally connected with the planet carrier 31, and the end side of the rotor 22 far from the planet carrier 31 is rotationally connected with the body 10.
The present embodiment is configured by rotationally connecting the end side of the sun gear 23 close to the carrier 31 with the carrier 31, and rotationally connecting the end side of the rotor 22 far from the carrier 31 with the body 10. Equivalently, the rotor is supported on the planet carrier and the body, two end sides of the rotor are stabilized, so that the rotating torque generated by the rotor is completely in the middle position of the planet carrier and the body, the rotor runs more stably, and the stability and the reliability are improved.
Referring to fig. 4, specifically, the sun gear 23 is fixedly disposed at the middle of the rotor 22 in the axial direction, the end side of the sun gear 23 close to the planet carrier 31 is connected to the planet carrier 31 through a first bearing 311, and the middle of the end side of the rotor 22 far from the planet carrier 31 is connected to the body 10 through a second bearing 312. So that both sides of the rotor 22 are supported while rotating, and stability and reliability while rotating are improved.
Referring to fig. 2 and fig. 3, further, the planetary gear assembly 32 includes an inner gear ring 321 disposed outside the sun gear 23 and sleeved on the planet carrier 31, three planetary gears 322 disposed between the sun gear 23 and the inner gear ring 321, and planetary gear shafts 323 respectively disposed through the three planetary gears 322 in the axial direction.
The planet gears 322 are respectively engaged with the ring gear 321 and the sun gear 23, and the planet gear shaft 323 is connected with the planet carrier 31.
It is understood that the number of the planetary gears 322 is not limited to three, and four or more than four may be adopted. When the number of the planetary gear 322 is other, the number of the planetary gear shafts 323 is correspondingly increased.
Referring to fig. 5 and 6, the body 10 includes a first housing 11 and a second housing 12 that are connected by a screw thread, a first passage 111 is provided on the first housing 11 for the speed reduction assembly 30 to pass through, and an annular cavity 112 is provided on the periphery of the first passage 111 for accommodating the stator 21 and the rotor 22.
Through will speed reduction unit 30 wears to locate in first passageway 111, be equivalent to with speed reduction unit 30 locates in the motor element to improve the compactness of steering wheel, make the steering wheel more small-size more, application scope enlarges.
In addition, during assembly, the rotor 22 is first installed in the annular cavity of the first housing 11, and the planet carrier 31 is then assembled into the body 10 through the first passage 111 from the side of the first housing 11 away from the second housing 12. The rotor 22 and the planet carrier 31 are not interfered with each other, and the installation is convenient. The situation that when the planet carrier 31 and the rotor 22 are installed on the same side, the planet carrier 31 is installed first and then the rotor 22 is installed is avoided, and due to the magnetic force action of the magnets on the rotor 22 and the silicon steel sheets of the stator 21, the sun gear fixed on the rotor 22 and the planet gears on the planet carrier 31 are difficult to align.
The second housing 12 is provided with a receiving groove 121 for mounting the second bearing 312. The middle part of the end side of the rotor 22 far away from the planet carrier 31 is provided with a protruding connecting part 223, the protruding connecting part 223 is sleeved with the second bearing 312, and the outer ring of the second bearing 312 is abutted against the inner wall of the accommodating groove 121. The second housing 12 gives a supporting force to the rotor 22, and the rotor 22 rotates relative to the second housing 12.
Referring to fig. 2, in order to improve the smoothness and the fluency of the rotation of the planet carrier 31, a third bearing 221 is sleeved on the end side of the planet carrier 31 close to the outside of the body, and the third bearing 221 abuts against the inner side wall of the first channel 111.
Referring to fig. 2, based on the above design concept, a fourth bearing 222 is sleeved on the end side of the planet carrier 31 close to the rotor 22, and the fourth bearing 222 abuts against the inner side wall of the first channel 111. Bearings are thus provided on both end sides of the planet carrier 31 for support, further optimizing the stability and reliability of the planet carrier 31 in rotation.
Referring to fig. 8, a rear cover 13 is screwed to an outer side of the second housing 12, a circuit board 14 is disposed in an accommodating space between the second housing 12 and the rear cover, and the circuit board 14 is electrically connected to the stator 21. The circuit board 14 controls the stator 21 to generate an induced magnetic field to cause the rotor to rotate around the stator 21. The principles of the above-described external rotor motor are well known to those skilled in the art and are not explained in great detail.
Referring to fig. 2, further, a magnetic encoder 15 for detecting a rotation position of the rotor 22 is disposed on the rotor 22, and the magnetic encoder 15 is electrically connected to the circuit board 14. By detecting the rotational position of the rotor 22 through the magnetic encoder 14, the circuit board 14 adjusts the direction of the induced magnetic field on the stator 21 in time so that the rotor 22 can continuously rotate around the stator 21.
Referring to fig. 5 and fig. 6, a wire trough 114 for passing an electric wire is disposed on the first housing 11, a wire outlet 122 corresponding to the wire trough 114 is disposed on the second housing 12, and the wire outlet 122 is communicated with the accommodating space. The wiring groove 114 is arranged in parallel with the axial direction of the rotor 22, so that the space in the body 10 is saved, and the whole volume is reduced.
Referring to fig. 1 and 2, a retainer ring 113 for axially fixing the carrier 31 is disposed on an end side of the carrier 31 near the outside, and the retainer ring 113 is fixed to the first housing 11 by screws.
It is worth mentioning that a plurality of first protruding installation portions 115 are evenly arranged on the first shell 11 along the circumferential direction, a second protruding installation portion 123 corresponding to the first protruding installation portion 115 is arranged on the second shell 12, and the first shell 11 and the second shell 12 are connected by a threaded connection piece (such as a screw or a bolt) passing through the first protruding installation portion 115 and the second protruding installation portion 123.
In at least one embodiment, a portion of the first and second male mounting portions 115 and 123 may be used to connect the first and second housings 11 and 12, and the remaining first and second male mounting portions 115 and 123 may be connected to an external device to facilitate installation.
The working principle of the embodiment is as follows: the stator 21 is electrified, the rotor 22 rotates around the stator 21, the rotor 22 rotates to drive the sun gear 23 to rotate, the sun gear 23 drives the planet carrier 31 to rotate through the planet gear assembly 32, and the planet gear assembly 32 reduces the speed of the rotating torque generated by the motor assembly 20 to increase the torque, and finally outputs the torque through the planet carrier 31.
The beneficial effects of implementing the embodiment at least comprise:
1. the present embodiment is configured by rotationally connecting the end side of the sun gear 23 close to the carrier 31 with the carrier 31, and rotationally connecting the end side of the rotor 22 far from the carrier 31 with the body 10. Equivalently, the rotor is supported on the planet carrier and the body 10, two end sides of the rotor are stabilized, so that the rotating torque generated by the rotor is completely in the middle position of the planet carrier and the body, the rotor runs more stably, and the stability and the reliability are improved.
2. Through will speed reduction unit 30 wears to locate in first passageway 111, be equivalent to with speed reduction unit 30 locates in the motor element to improve the compactness of steering wheel, make the steering wheel volume more miniaturized, application scope enlarges.
3. During assembly, the rotor 22 is first installed in the annular cavity of the first housing 11, and the planet carrier 31 is then assembled into the body 10 through the first passage 111 from the side of the first housing 11 away from the second housing 12. The rotor 22 and the planet carrier 31 are not interfered with each other, and the installation is convenient. The situation that when the planet carrier 31 and the rotor 22 are installed on the same side, the planet carrier 31 is installed first and then the rotor 22 is installed is avoided, and due to the magnetic force action of the magnets on the rotor 22 and the silicon steel sheets of the stator 21, the sun gear fixed on the rotor 22 and the planet gears on the planet carrier 31 are difficult to align.
Example two
A robot comprises the outer rotor planetary reduction steering engine in the embodiment I. The robot of the embodiment adopts the outer rotor planetary reduction steering engine of the first embodiment, so that the robot has all the beneficial effects of the outer rotor planetary reduction steering engine.
The present invention has been described in detail with reference to the above embodiments, but these are not to be construed as limiting the present invention. The protection scope of the present invention is not limited to the above embodiments, but equivalent modifications or changes made by those skilled in the art according to the disclosure of the present invention should be included in the protection scope of the claims.
Claims (10)
1. The utility model provides an outer rotor planet speed reduction steering wheel which characterized in that includes:
a body;
locate motor element on the body, motor element includes: the stator is arranged on the body; the rotor is arranged on the outer ring of the stator; the sun wheel is arranged on the rotor and penetrates through the stator in the axial direction; and
a speed reduction component arranged on the axial direction of the stator in a penetrating way, wherein the speed reduction component comprises a planet carrier which is exposed at one side of the body and is used for outputting torque, and a planet wheel component which is in power connection between the sun wheel and the planet carrier,
the end side of the sun gear, which is close to the planet carrier, is rotationally connected with the planet carrier, and the end side of the rotor, which is far away from the planet carrier, is rotationally connected with the body.
2. The outer rotor planetary reduction steering engine according to claim 1, wherein the end side of the sun gear close to the planet carrier is connected with the planet carrier through a first bearing, and the end side of the rotor far from the planet carrier is connected with the body through a second bearing.
3. The outer rotor planetary reduction steering engine according to claim 1, wherein the planetary wheel assembly includes an inner gear ring disposed outside the sun gear, a plurality of planetary wheels disposed between the sun gear and the inner gear ring, and planetary wheel shafts respectively disposed through the plurality of planetary wheels,
the planet wheel is respectively in meshed connection with the inner gear ring and the sun gear, and the planet wheel shaft is connected with the planet carrier.
4. The outer rotor planetary reduction steering engine according to claim 2, wherein the body comprises a first housing and a second housing which are connected in a matched manner, a first channel for the reduction assembly to pass through is formed in the first housing, an annular cavity for accommodating the stator and the rotor is formed in the periphery of the first channel, and an accommodating groove for accommodating a second bearing is formed in the second housing.
5. The outer rotor planetary reduction steering engine according to claim 4, wherein a third bearing is sleeved on the end side of the planet carrier close to the outside of the body, and the third bearing abuts against the inner side wall of the first channel.
6. The outer rotor planetary reduction steering engine according to claim 4, wherein a fourth bearing is sleeved on the end of the planet carrier close to the rotor, and the fourth bearing abuts against the inner side wall of the first channel.
7. The outer rotor planetary reduction steering engine according to claim 4, wherein a rear cover is in threaded connection with the outer side of the second housing, a circuit board is arranged in an accommodating space between the second housing and the rear cover, and the circuit board is electrically connected with the stator.
8. The outer rotor planetary reduction steering engine according to claim 7, wherein the rotor is provided with a magnetic encoder for detecting a rotational position of the rotor, and the magnetic encoder is electrically connected to the circuit board.
9. The outer rotor planetary reduction steering engine according to claim 7, wherein the first housing is provided with a wiring groove for passing an electric wire, the second housing is provided with a wire outlet corresponding to the wiring groove, and the wire outlet is communicated with the accommodating space.
10. A robot comprising the external rotor planetary reduction steering engine according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020448756.3U CN211557070U (en) | 2020-03-30 | 2020-03-30 | Outer rotor planetary reduction steering engine and robot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020448756.3U CN211557070U (en) | 2020-03-30 | 2020-03-30 | Outer rotor planetary reduction steering engine and robot |
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| Publication Number | Publication Date |
|---|---|
| CN211557070U true CN211557070U (en) | 2020-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020448756.3U Active CN211557070U (en) | 2020-03-30 | 2020-03-30 | Outer rotor planetary reduction steering engine and robot |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410947A (en) * | 2021-07-22 | 2021-09-17 | 广东金霸智能科技股份有限公司 | Drive device |
| CN113726092A (en) * | 2021-07-22 | 2021-11-30 | 广东金霸智能科技股份有限公司 | Drive device |
-
2020
- 2020-03-30 CN CN202020448756.3U patent/CN211557070U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410947A (en) * | 2021-07-22 | 2021-09-17 | 广东金霸智能科技股份有限公司 | Drive device |
| CN113726092A (en) * | 2021-07-22 | 2021-11-30 | 广东金霸智能科技股份有限公司 | Drive device |
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