CN219802055U - Low-noise permanent magnet direct current speed reducing motor - Google Patents
Low-noise permanent magnet direct current speed reducing motor Download PDFInfo
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- CN219802055U CN219802055U CN202320677741.8U CN202320677741U CN219802055U CN 219802055 U CN219802055 U CN 219802055U CN 202320677741 U CN202320677741 U CN 202320677741U CN 219802055 U CN219802055 U CN 219802055U
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- gear
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- planet gears
- planet carrier
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- 230000005540 biological transmission Effects 0.000 claims abstract description 96
- 230000007246 mechanism Effects 0.000 claims abstract description 94
- 239000002184 metal Substances 0.000 claims abstract description 36
- 229910052751 metal Inorganic materials 0.000 claims abstract description 36
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims 2
- 230000005389 magnetism Effects 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000004663 powder metallurgy Methods 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Abstract
The utility model discloses a low-noise permanent magnet Direct Current (DC) speed reducing motor, which comprises a motor body, an annular gear, a plurality of transmission mechanisms and output mechanisms which are sequentially connected in a transmission way, wherein the motor body is provided with a driving gear, and the driving gear is a metal piece; the transmission mechanism comprises a first planet carrier, a central gear and a plurality of first planet gears, the plurality of first planet gears are meshed with the inner gear ring, the plurality of first planet gears of the transmission mechanism at one end are meshed with the driving gear, the central gear and the first planet gears of one transmission mechanism are plastic parts, and the central gears and the first planet gears of the other transmission mechanisms are metal parts; the output mechanism comprises a second planet carrier, an output shaft and a plurality of second planet gears, the plurality of second planet gears are meshed with the inner gear ring and the central gear of the transmission mechanism at the other end, and the second planet gears are metal pieces. The permanent magnet direct current speed reduction motor can effectively reduce running noise, can adapt to large torque and avoid tooth breakage.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a low-noise permanent magnet Direct Current (DC) speed reduction motor.
Background
Because the output rotating speed of the motor is higher, the rotating speed is reduced, and a speed reducing mechanism is generally configured and consists of a plurality of layers of planetary gear sets which are sequentially connected. In the related art, planetary gears of the speed reducing mechanism are all formed by metal powder die casting or all formed by injection molding, namely the planetary gears are all metal pieces or all plastic pieces, wherein if all the planetary gears are metal pieces, noise generated by transmission among the metal pieces is large, and if all the planetary gears are plastic pieces, the transmission among the plastic pieces is difficult to adapt to larger torsion, and particularly, a layer of planetary gear set far away from the output end of a motor can generate tooth breakage.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the low-noise permanent magnet direct current speed reducing motor which can effectively reduce running noise, is suitable for large torque and avoids tooth breakage.
According to an embodiment of the utility model, a low-noise permanent magnet direct current speed reduction motor comprises: the motor body is provided with a driving gear, and the driving gear is a metal piece; an inner gear ring mounted on the motor body; the transmission mechanism comprises a first planet carrier, a central gear and a plurality of first planet gears, wherein the central gear is arranged on one side of the first planet carrier, the plurality of first planet gears are rotatably arranged on the other side of the first planet carrier and are arranged at intervals along the circumferential direction of the central gear, the plurality of first planet gears are meshed with the inner gear ring, the plurality of first planet gears of one end of the transmission mechanism are meshed with the driving gear, the central gear and the first planet gears of one transmission mechanism are plastic parts, and the central gear and the first planet gears of the other transmission mechanisms are metal parts; the output mechanism comprises a second planet carrier, an output shaft and a plurality of second planet gears, wherein the output shaft is arranged on one side of the second planet carrier, the second planet gears are rotatably arranged on the other side of the second planet carrier and are circumferentially arranged at intervals along the output shaft, the second planet gears are metal pieces, and the second planet gears are meshed with the inner gear ring and meshed with the central gear of the transmission mechanism on the other end.
The technical scheme at least has the following beneficial effects: through setting up the sun gear and the first planetary gear of a set of drive mechanism as the plastic spare for the transmission between this drive mechanism and motor body, other drive mechanism or the output mechanism is the transmission between metal gear and the plastic gear, thereby reduces metal and metal's contact or collision, effectively noise reduction, and the transmission of other positions is the transmission between metal gear and the metal gear, and metal gear intensity is big, can adapt to great moment of torsion, avoids collapsing the tooth.
According to some embodiments of the utility model, the transmission mechanism near one end of the driving gear is a first transmission mechanism, and the sun gear and the first planetary gear of the first transmission mechanism are plastic pieces.
According to some embodiments of the utility model, the first planet carrier of the first transmission mechanism is a plastic part, and the first planet carrier of the first transmission mechanism and the sun gear are of an integral structure.
According to some embodiments of the utility model, the first transmission mechanism further comprises a positioning ring, the positioning ring is arranged on one side of the first planet gears, which is away from the first planet carrier, and a plurality of the first planet gears are in rotating fit with the positioning ring.
According to some embodiments of the utility model, the motor further comprises a base and a shell, wherein the base is mounted on the motor body, the shell is detachably mounted on the base and covers the transmission mechanism, and the annular gear is arranged on the inner peripheral wall of the shell.
According to some embodiments of the utility model, the outer wall of the base is provided with a plurality of first fixing portions, the plurality of first fixing portions are arranged at equal intervals along the circumferential direction of the base, the outer wall of the housing is provided with a plurality of second fixing portions corresponding to the first fixing portions, one end of each second fixing portion, which faces the first fixing portion, is provided with a positioning groove, the first fixing portions are accommodated in the positioning grooves, and the first fixing portions and the second fixing portions are connected through fasteners.
According to some embodiments of the utility model, the positioning groove is an arc groove, the centers of a plurality of arc grooves are located on the same virtual circle, and the centers of the virtual circles coincide with the center line of the shell.
According to some embodiments of the utility model, the transmission mechanism adjacent to the output mechanism is a second transmission mechanism, the first planet carrier, the sun gear and the first planet gear of the second transmission mechanism are all metal pieces, and the first planet carrier and the sun gear of the second transmission mechanism are of an integral structure.
According to some embodiments of the utility model, the second transmission further comprises a spacer mounted to the first planet carrier and located on a side of the second planet gear facing away from the second planet carrier.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of a motor according to an embodiment of the present utility model;
FIG. 2 is an exploded view of an electric motor in an embodiment of the utility model;
FIG. 3 is a cross-sectional view of an electric motor in an embodiment of the utility model;
fig. 4 is a schematic structural view of the housing according to an embodiment of the present utility model.
Reference numerals:
a motor body 100; a driving gear 110;
a first transmission mechanism 200; a first planet carrier 210; a sun gear 220; a first planetary gear 230; a retaining ring 240;
a second transmission mechanism 300; a spacer 310;
an output mechanism 400; a second carrier 410; an output shaft 420; a second planetary gear 430;
a base 500; a first fixing portion 510;
a housing 600; ring gear 610; a second fixing part 620; positioning groove 621.
Detailed Description
Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 4, an embodiment of the present utility model provides a low noise permanent magnet dc reduction motor including a motor body 100, an inner gear ring 610, an output mechanism 400, and a plurality of transmission mechanisms.
Referring to fig. 1 and 2, it can be understood that the motor body 100 is a permanent magnet dc motor, and the output end of the motor body 100 is provided with a driving gear 110, and the driving gear 110 is a metal piece, such as obtained by a powder metallurgy process. The motor body 100 is equipped with the base 500 and the shell 600 still installs in one side of driving gear 110, and the base 500 is fixed in motor body 100, and shell 600 demountable installation is in base 500, like joint or screw fixation etc. the inner wall of shell 600 is provided with ring gear 610, and a plurality of drive mechanism and output mechanism 400 are all located in the shell 600.
Referring to fig. 2 and 3, it can be understood that the transmission mechanism includes two transmission mechanisms connected in a sequential transmission manner, and defines a transmission mechanism close to the motor body 100 as a first transmission mechanism 200, and a transmission mechanism far from the motor body 100 as a second transmission mechanism 300. The transmission mechanism comprises a first planet carrier 210, a sun gear 220 and three first planet gears 230, wherein the sun gear 220 is arranged on one side of the first planet carrier 210, which is away from the motor body 100, the three first planet gears 230 are rotatably arranged on one side of the first planet carrier 210, which is towards the motor body 100, and the three first planet gears 230 are arranged at equal intervals along the circumferential direction of the sun gear 220, and the three first planet gears 230 are all meshed with the annular gear 610. Wherein the three first planetary gears 230 of the first transmission mechanism 200 are further engaged with the driving gear 110, and the three first planetary gears 230 of the second transmission mechanism 300 are engaged with the sun gear 220 of the first transmission mechanism 200.
Referring to fig. 2 and 3, it will be appreciated that the output mechanism 400 is disposed on a side of the second transmission mechanism 300 facing away from the first transmission mechanism 200, the output mechanism 400 includes a second planet carrier 410, an output shaft 420 and three second planet gears 430, the output shaft 420 is disposed on a side of the second planet carrier 410 facing away from the second transmission mechanism 300, the output shaft 420 and the second planet carrier 410 are integrally formed, the three second planet gears 430 are rotatably mounted on a side of the second planet carrier 410 facing the second transmission mechanism 300 and are disposed at equal intervals along a circumferential direction of the output shaft 420, the three second planet gears 430 are engaged with the ring gear 610, and simultaneously, the three second planet gears 430 are engaged with the sun gear 220 of the second transmission mechanism 300. Wherein, the three second planetary gears 430 are all metal pieces, such as produced by a powder metallurgy process.
Referring to fig. 2, it can be appreciated that the sun gear 220 and the three first planetary gears 230 of the first transmission mechanism 200 are all plastic parts, such as obtained by an injection molding process; the sun gear 220 and the three first planet gears 230 of the second transmission 300 are each metal pieces, as produced by a powder metallurgy process. Therefore, the transmission between the driving gear 110 and the first planetary gear 230 of the first transmission mechanism 200 is the transmission between the metal gear and the plastic gear, and the transmission between the sun gear 220 of the first transmission mechanism 200 and the first planetary gear 230 of the second transmission mechanism 300 is also the transmission between the metal gear and the plastic gear, so as to avoid the contact or collision between metals and effectively reduce noise; because the rotation speed of the output end of the motor body 100 is larger, the torque is smaller, and the first planetary gear 230 and the sun gear 220 of the first transmission mechanism 200 cannot have tooth collapse; the transmission between the metal gear and the metal gear is arranged between the sun gear 220 and the second planetary gear 430 of the second transmission mechanism 300, and the second planetary gear 430 of the metal piece and the sun gear 220 of the second transmission mechanism 300 can not generate tooth breakage due to the fact that the rotating speed of the output end far away from the motor body 100 is smaller and the torque is larger, so that the motor can adapt to large torque output.
Through setting the sun gear 220 and the first planetary gear 230 of the first transmission mechanism 200 as plastic parts, the transmission between the first transmission mechanism 200 and the motor body 100 and the transmission between the first transmission mechanism 200 and the second transmission mechanism 300 are all the transmission between the metal gear and the plastic gear, so that the contact or collision between metal and metal is reduced, the noise is effectively reduced, the transmission between the second transmission mechanism 300 and the output mechanism 400 is the transmission between the metal gear and the metal gear, the metal gear has high strength, can adapt to larger torque, and avoids tooth collapse.
It can be appreciated that the first planet carrier 210 of the first transmission mechanism 200 is also a plastic part, and the first planet carrier 210 and the sun gear 220 of the first transmission mechanism 200 are of an integral structure, such as being directly produced by an injection molding process, and the structure is simple and easy to produce.
Referring to fig. 2, it may be understood that the first transmission mechanism 200 further includes a positioning ring 240, the positioning ring 240 is located on a side of the first planetary gear 230 of the first transmission mechanism 200 facing away from the first planet carrier 210, that is, the first planetary gear 230 is sandwiched between the positioning ring 240 and the first planet carrier 210, the output end of the motor body 100 is disposed through the positioning ring 240, and the first planetary gear 230 is rotationally matched with the positioning ring 240, so that the first planetary gear 230 is kept stable, the first planetary gear 230 is prevented from swinging, and the operation stability and reliability of the motor are improved.
Referring to fig. 1 and 4, it can be understood that the outer wall of the base 500 is provided with a plurality of first fixing portions 510, specifically, four first fixing portions 510 are provided, the four first fixing portions 510 are arranged at equal intervals along the circumferential direction of the base 500, correspondingly, the outer wall of the housing 600 is provided with four second fixing portions 620, the four second fixing portions 620 are in one-to-one correspondence with the four first fixing portions 510, the first fixing portions 510 and the second fixing portions 620 are each provided with a bump structure, the first fixing portions 510 are provided with screw holes, the second fixing portions are provided with fixing holes in correspondence, and fasteners (not shown in the drawings) such as fastening screws are connected between the first fixing portions 510 and the second fixing portions 620, and penetrate through the fixing holes and are in threaded connection with the first fixing portions 510, thereby fixing the housing 600 with the base 500. In order to facilitate assembly, a positioning groove 621 is disposed at an end of the second fixing portion 620 facing the first fixing portion 510, and the first fixing portion 510 is accommodated in the positioning groove 621, so that the housing 600 and the base 500 are positioned relatively, and the positioning is accurate, thereby ensuring the coaxiality of the housing 600 and the base 500. Generally, the center line of the base 500 is coaxial with the center line of the driving gear 110, that is, the coaxiality of the ring gear 610 and the driving gear 110 of the motor body 100 is ensured.
Referring to fig. 4, it can be understood that the positioning groove 621 is configured as an arc groove, the opening of the arc groove faces the central axis of the housing 600, the centers of the four arc grooves are located on the same virtual circle, and the center of the virtual circle coincides with the central line of the housing 600, so that the coaxiality of the housing 600 and the base 500 can be ensured, and the coaxiality of the ring gear 610 and the driving gear 110 can be improved.
It will be appreciated that the first carrier 210 and the sun gear 220 of the second transmission 300 are of unitary construction, i.e., directly produced by a powder metallurgy process, for ease of manufacture.
Referring to fig. 2, it may be appreciated that the second transmission mechanism 300 further includes a spacer 310, where the spacer 310 is mounted on the first planet carrier 210 and located on a side of the second planet gear 430 facing away from the second planet carrier 410, that is, the second planet gear 430 is sandwiched between the spacer 310 and the second planet carrier 410, so that the first planet carrier 210 and the second planet gear 430 of the second transmission mechanism 300 may be separated, and abrasion of the second planet gear 430 is reduced.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.
Claims (9)
1. The utility model provides a low noise permanent magnetism direct current gear motor which characterized in that includes:
the motor body is provided with a driving gear, and the driving gear is a metal piece;
an inner gear ring mounted on the motor body;
the transmission mechanism comprises a first planet carrier, a central gear and a plurality of first planet gears, wherein the central gear is arranged on one side of the first planet carrier, the plurality of first planet gears are rotatably arranged on the other side of the first planet carrier and are arranged at intervals along the circumferential direction of the central gear, the plurality of first planet gears are meshed with the inner gear ring, the plurality of first planet gears of one end of the transmission mechanism are meshed with the driving gear, the central gear and the first planet gears of one transmission mechanism are plastic parts, and the central gear and the first planet gears of the other transmission mechanisms are metal parts;
the output mechanism comprises a second planet carrier, an output shaft and a plurality of second planet gears, wherein the output shaft is arranged on one side of the second planet carrier, the second planet gears are rotatably arranged on the other side of the second planet carrier and are circumferentially arranged at intervals along the output shaft, the second planet gears are metal pieces, and the second planet gears are meshed with the inner gear ring and meshed with the central gear of the transmission mechanism on the other end.
2. The low noise permanent magnet direct current gear motor according to claim 1, wherein: the transmission mechanism close to one end of the driving gear is a first transmission mechanism, and the sun gear and the first planet gear of the first transmission mechanism are plastic parts.
3. The low noise permanent magnet direct current gear motor according to claim 2, wherein: the first planet carrier of the first transmission mechanism is a plastic part, and the first planet carrier of the first transmission mechanism and the sun gear are of an integrated structure.
4. The low noise permanent magnet direct current gear motor according to claim 2, wherein: the first transmission mechanism further comprises a positioning ring, wherein the positioning ring is arranged on one side, away from the first planet carrier, of the first planet gears, and a plurality of the first planet gears are in running fit with the positioning ring.
5. The low noise permanent magnet direct current gear motor according to claim 1, wherein: the motor comprises a motor body, and is characterized by further comprising a base and a shell, wherein the base is arranged on the motor body, the shell is detachably arranged on the base and covers the transmission mechanism, and the annular gear is arranged on the inner peripheral wall of the shell.
6. The low noise permanent magnet direct current gear motor according to claim 5, wherein: the outer wall of base is equipped with a plurality of first fixed parts, and is a plurality of first fixed part is followed the circumference equidistant arrangement of base, the outer wall of shell be equipped with a plurality of with the second fixed part that first fixed part corresponds, the second fixed part orientation the one end of first fixed part is equipped with the constant head tank, first fixed part hold in the constant head tank, just first fixed part with the second fixed part passes through the fastener and connects.
7. The low noise permanent magnet direct current gear motor according to claim 6, wherein: the positioning grooves are arranged as arc grooves, the circle centers of a plurality of arc grooves are positioned on the same virtual circle, and the circle centers of the virtual circles are coincident with the central line of the shell.
8. The low noise permanent magnet direct current gear motor according to claim 1, wherein: the transmission mechanism close to the output mechanism is a second transmission mechanism, the first planet carrier, the sun gear and the first planet gear of the second transmission mechanism are all metal pieces, and the first planet carrier and the sun gear of the second transmission mechanism are of an integrated structure.
9. The low noise permanent magnet direct current gear motor according to claim 8, wherein: the second transmission mechanism further comprises a separation sheet, and the separation sheet is arranged on the first planet carrier and is positioned on one side of the second planet gear, which is away from the second planet carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320677741.8U CN219802055U (en) | 2023-03-30 | 2023-03-30 | Low-noise permanent magnet direct current speed reducing motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320677741.8U CN219802055U (en) | 2023-03-30 | 2023-03-30 | Low-noise permanent magnet direct current speed reducing motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219802055U true CN219802055U (en) | 2023-10-03 |
Family
ID=88151156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320677741.8U Active CN219802055U (en) | 2023-03-30 | 2023-03-30 | Low-noise permanent magnet direct current speed reducing motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219802055U (en) |
-
2023
- 2023-03-30 CN CN202320677741.8U patent/CN219802055U/en active Active
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