CN210013982U - Gear box and gear motor - Google Patents
Gear box and gear motor Download PDFInfo
- Publication number
- CN210013982U CN210013982U CN201920423723.0U CN201920423723U CN210013982U CN 210013982 U CN210013982 U CN 210013982U CN 201920423723 U CN201920423723 U CN 201920423723U CN 210013982 U CN210013982 U CN 210013982U
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- gear
- planet
- planetary gear
- planet carrier
- gears
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Abstract
The utility model discloses a gear box and gear motor, gear box include casing, first order planetary gear, second level planetary gear and output gear, first order planetary gear and second level planetary gear install in the casing, output gear installs on second level planetary gear, first order planetary gear rotates drive second level planetary gear and rotates, second level planetary gear rotates the drive output gear rotates. The utility model discloses a set up first order planetary gear and second level planetary gear and form two-stage planetary gear and carry out the transmission, when guaranteeing transmission efficiency, still make this gear box assembly simple, realized the drive ratio serialization moreover.
Description
Technical Field
The utility model relates to a gear drive technical field, more specifically say so and relate to a gear box and gear motor.
Background
Most of miniature gear motors on the market at present are in 5-level parallel shaft gear transmission, the gear box is composed of 10 metal gears and is processed and produced by hobbing, and 3 fixing plates and 2 fixing columns (made of brass) are added, so that the part cost is high, the assembly is complex, the assembly precision is high, and the miniature metal gear box cannot be replaced by plastic gears and plastic parts, so that the manufacturing cost of the whole gear box is very high, the production efficiency is low, the resource is wasted, and the national development strategy is not met.
SUMMERY OF THE UTILITY MODEL
The features and content of these solutions will be better understood by those skilled in the art from reading the present description.
An object of the utility model is to provide a gear box and gear motor, when guaranteeing transmission efficiency, the assembly is simple.
The utility model provides an above-mentioned technical problem adopted technical scheme as follows: the utility model provides a gear box, includes casing, first order planetary gear, second level planetary gear and output gear, first order planetary gear and second level planetary gear install in the casing, output gear installs on the second level planetary gear, first order planetary gear rotates the rotation of drive second level planetary gear, the rotation of second level planetary gear drives output gear rotates.
The first-stage planetary gear comprises a first sun gear, a first inner gear ring and at least three planetary gears, the at least three planetary gears are arranged in the first inner gear ring, each planetary gear is meshed with the first inner gear ring, the first sun gear is located between the at least three planetary gears, each planetary gear is also meshed with the first sun gear, and the at least three planetary gears drive the second-stage planetary gear to rotate.
The second-stage planetary gear comprises a first planet carrier, a second sun gear, a second planet carrier, a third planet carrier, a second inner gear ring and at least three duplex planet gears, the first planet carrier is arranged on the at least three planet gears, and the at least three planet gears drive the first planet carrier to rotate in a rotating mode; the second sun gear is fixed on the first planet carrier, the second planet carrier is connected with the third planet carrier, and an accommodating space is formed between the second planet carrier and the third planet carrier; the at least three duplex planet wheels are arranged in the accommodating space, the second sun wheel is positioned among the at least three duplex planet wheels, each duplex planet wheel is meshed with the second sun wheel, each duplex planet wheel is also meshed with the first inner gear ring and the second inner gear ring at the same time, and the output gear is fixed on the second inner gear ring.
Each planet wheel is provided with a first shaft hole, each first planet carrier comprises a first supporting disc and at least three first shafts arranged on the first supporting disc, and each first shaft is matched with one first shaft hole.
The second planet carrier is provided with a connecting column, the third planet carrier is provided with a jack, and the connecting column is arranged in the jack.
Every pair planet wheel has two links, and one of them link of every pair planet wheel is equipped with the secondary shaft, and another link of every pair planet wheel is equipped with the secondary shaft hole, be equipped with the third shaft hole on the second planet carrier, be equipped with the third axle on the third planet carrier, the secondary shaft with the third shaft hole cooperatees, the third axle with the secondary shaft hole phase is in coordination.
The casing includes fixed cover and locates the chassis of fixed cover bottom, the joint is connected between the bottom of fixed cover and the chassis.
The bottom of the fixed cover is provided with a clamping groove, the chassis is provided with a buckle, and the clamping groove and the buckle are mutually clamped or separated.
The shell, the first-stage planetary gear, the second-stage planetary gear and the output gear are made of plastics.
The utility model also provides a gear motor, include the motor and install gear box on the motor, the gear box is the aforesaid gear box, the rotation axis of motor with first order planetary gear connects.
The utility model has the advantages that: the two-stage planetary gear is formed by arranging the first-stage planetary gear and the second-stage planetary gear to carry out transmission, so that the gear box is simple to assemble while the transmission efficiency is ensured, and the transmission ratio serialization is realized.
Drawings
The advantages and mode of realisation of the invention will become more apparent hereinafter by describing in detail the invention with reference to the attached drawings, wherein the content shown in the drawings is only for explaining the invention, without constituting any limitation to the meaning of the invention, in which:
fig. 1 is a structural diagram of a gear box according to an embodiment of the present invention.
Fig. 2 is an exploded view of a gear box according to an embodiment of the present invention.
Fig. 3 is an exploded view of the gear box according to the embodiment of the present invention.
Fig. 4 is a sectional structure diagram of the gear box according to the embodiment of the present invention.
Fig. 5 is a sectional structure view of the reduction motor according to the embodiment of the present invention.
Detailed Description
As shown in fig. 1, the embodiment of the present invention provides a gear box, which can be used in a reduction motor, and the gear box is installed on a motor of the reduction motor. This gear box includes casing 10, first order planetary gear, second level planetary gear and output gear 40, first order planetary gear and second level planetary gear install in casing 10, output gear 40 installs on the second level planetary gear, first order planetary gear rotates the rotation of drive second level planetary gear, the rotation of second level planetary gear drives output gear and rotates, drive through two-stage planetary gear like this, when guaranteeing transmission efficiency, still make this gear box assembly simple, and realized the drive ratio serialization moreover.
The housing 10, the first stage planetary gear, the second stage planetary gear and the output gear 40 are made of plastic, so that the cost is low and the production efficiency is high.
As shown in fig. 2 and 4, the housing includes a fixed cover 11 and a chassis 12 disposed at the bottom of the fixed cover 11 (taking the direction shown in fig. 2 as an example), the top of the fixed cover 11 is provided with an opening 111, and the output gear 40 protrudes from the opening 111 of the fixed cover 11.
The bottom of the fixing cover 11 is connected with the chassis 12 in a clamping manner, in this embodiment, a clamping groove 112 is formed in the bottom of the fixing cover 11, a buckle 123 is arranged on the chassis 12, and the clamping groove 112 and the buckle 123 are clamped or separated from each other. Two buckles 123 are arranged on the front side of the chassis 12 at intervals, and a groove 124 is formed between the two buckles 123; two buckles 123 are arranged at intervals on the rear side of the chassis 12, and a groove 124 is formed between the two buckles 123.
The chassis 12 is provided at the center thereof with a first through hole 122 for passing a rotating shaft of the motor therethrough. The chassis 12 is further provided with screw passing holes 121 at both sides of the first through hole 122 so as to fix the chassis 12 to the motor by screws.
In this embodiment, the first-stage planetary gear is an NGW planetary gear, and the second-stage planetary gear is an NGWN planetary gear. Because the NGWN planetary gear has large transmission ratio and compact structure, but the efficiency is slightly low, tooth alignment is needed in most cases, if tooth alignment is not needed, the tooth alignment scheme is few, the selectable transmission ratio is few, and the transmission ratio can not realize serialization; NGW planetary gear single-stage drive ratio is little, and efficiency is higher, for realizing big drive ratio, needs multistage NGW stack, causes the assembly difficulty, and is loaded down with trivial details, and production efficiency is low, consequently, in this embodiment, adopts NGW planetary gear and NGWN planetary gear to form two-stage planetary gear and carries out the transmission, when guaranteeing transmission efficiency, still makes this gear box assembly simple, has realized the drive ratio serialization moreover, and output technical parameter can reach the standard that the metal was made completely moreover.
As shown in fig. 2 and 4, the first stage planetary gear includes a first sun gear 21, a first ring gear 22, and at least three planetary gears 23, in this embodiment, the first sun gear 21 is connected to the rotating shaft of the motor, and the number of the planetary gears 23 is three. Three planet gears 23 are arranged in the first annulus gear 22 and each planet gear 23 is in mesh with the first annulus gear 22. The first sun gear 21 is located between three planet gears 23 and each planet gear 23 is also in mesh with the first sun gear 21, and the rotation of the three planet gears 23 drives the rotation of the second stage planet gears.
Two ribs 221 are arranged at intervals at the bottom of the first inner gear ring 22, and the ribs 221 are clamped in the grooves 124 of the chassis 12, so that the first inner gear ring 22 is fixed on the chassis 12 to prevent the first inner gear ring 22 from rotating.
As shown in fig. 3, the first inner gear ring 22 is provided with a second through hole 222 for the first sun gear 21 to extend into the first inner gear ring 22 to engage with the planet gears 23.
As shown in fig. 2 to 4, the second-stage planetary gear includes a first planet carrier 31, a second sun gear 32, a second planet carrier 33, a third planet carrier 35, a second ring gear 36, and at least three double planet gears 34, and in this embodiment, the number of the double planet gears 34 is three.
The first planet carrier 31 is mounted on three planet wheels 23, and the three planet wheels 23 drive the first planet carrier 31 to rotate. In this embodiment, each planet wheel 23 is provided with a first shaft hole 231, the first planet carrier 31 includes a first support disc 311 and three first shafts 312 arranged on the first support disc 311, the first shafts 312 are matched with the first shaft holes 231, and one first shaft 312 is arranged in one first shaft hole 231.
The second sun gear 32 is fixed to the first support plate 311, and in this embodiment, the second sun gear 32 is integrally formed with the first support plate 311.
The second planet carrier 33 and the third planet carrier 35 are connected, and an accommodating space is formed between the second planet carrier 33 and the third planet carrier 35. In this embodiment, the second planet carrier 33 includes a second support plate 331 and three connection posts 332 disposed on the second support plate 331, the third planet carrier 351 includes a third support plate 351, three third shafts 352 disposed on the third support plate 351, and three bosses 353 disposed on the third support plate 351, each boss 353 is provided with a through hole 3531, the connection posts 332 are disposed in the through holes 3531 to connect the second planet carrier 33 and the third planet carrier 35, and a space is provided between the second support plate 331 and the third support plate 351, so as to form an accommodating space.
Three duplex planet wheels 34 are arranged in an accommodating space formed between the second planet carrier 33 and the third planet carrier 35, the second sun wheel 32 is positioned between the three duplex planet wheels 34, the lower part of each duplex planet wheel 34 is meshed with the second sun wheel 32, the lower part of each duplex planet wheel is also meshed with the first inner gear ring 22, the second inner gear ring 36 is positioned above the third planet carrier 35, and the upper part of each duplex planet wheel is meshed with the second inner gear ring 36. The output gear 40 is fixed to the second ring gear 36, and in the present embodiment, the output gear 40 is integrally formed with the second ring gear 36.
Each duplex planet wheel 34 has two connecting ends, one connecting end of each duplex planet wheel 34 is provided with a second shaft 342, the other connecting end of each duplex planet wheel 34 is provided with a second shaft hole 341, the second supporting disk 331 is provided with a third shaft hole 333, the second shaft 342 is arranged in the third shaft hole 333, and the third shaft 352 is arranged in the second shaft hole 341.
As shown in fig. 3, the second support plate 331 is provided with a third through hole 334 for the second sun gear 32 to extend between the second planet carrier 33 and the third planet carrier 35.
The motor works to drive the first sun gear 21 to rotate, the first sun gear 21 rotates to drive the three planet gears 23 to rotate, the three planet gears 23 rotate to drive the first planet carrier 31 to further drive the second sun gear 32 to rotate, the second sun gear 32 rotates to drive the three duplex planet gears 34 to rotate, and the three duplex planet gears 34 rotate to drive the second inner gear ring 36 to rotate so as to drive the output gear 40 to rotate in a speed reduction manner.
In this embodiment, the number of teeth of the first sun gear is 13, the number of teeth of the planet gear is 11, the number of teeth of the first ring gear is 36, and the transmission ratio of the first stage planet gear is 3.769. The number of teeth of the second sun gear is 9, the number of teeth of the duplex planet gear is 13, the number of teeth of the second inner gear ring is 39, the transmission ratio of the second-stage planet gear is 65, and the total transmission ratio of the two-stage planet gear is 245.
As shown in fig. 5, the present invention further provides a reduction motor, which includes a motor 50 and a gear box installed on the motor 50, wherein a rotation shaft 51 of the motor 50 is connected to the first sun gear 21.
In this embodiment, the rotating shaft 51 of the motor 50 is a D-shaped shaft, and the first sun gear 21 is provided with a D-shaped hole matching with the D-shaped shaft.
This gear motor can be used to on-vehicle cell phone stand.
The preferred embodiments of the present invention have been described with reference to the accompanying drawings, and those skilled in the art can implement the present invention in various modifications without departing from the scope and spirit of the present invention. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. The above description is only a preferred and practical embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the specification and the drawings of the present invention are included in the scope of the present invention.
Claims (10)
1. The utility model provides a gear box, its characterized in that includes casing, first order planetary gear, second level planetary gear and output gear, first order planetary gear and second level planetary gear install in the casing, output gear installs on the second level planetary gear, first order planetary gear rotates drive second level planetary gear and rotates, second level planetary gear rotates the drive output gear rotates.
2. A gearbox according to claim 1, in which the first stage planetary gear comprises a first sun gear, a first annulus gear and at least three planet wheels, the at least three planet wheels being located in the first annulus gear and each planet wheel being in mesh with the first annulus gear, the first sun gear being located between the at least three planet wheels and each planet wheel being further in mesh with a first sun gear, the rotation of the at least three planet wheels driving the rotation of the second stage planetary gear.
3. A gearbox according to claim 2, in which the second stage of planet gears comprises a first planet carrier, a second sun gear, a second planet carrier, a third planet carrier, a second annulus gear and at least three double planet gears, the first planet carrier being mounted on the at least three planet gears, the at least three planet gears rotationally driving the first planet carrier; the second sun gear is fixed on the first planet carrier, the second planet carrier is connected with the third planet carrier, and an accommodating space is formed between the second planet carrier and the third planet carrier; the at least three duplex planet wheels are arranged in the accommodating space, the second sun wheel is positioned among the at least three duplex planet wheels, each duplex planet wheel is meshed with the second sun wheel, each duplex planet wheel is also meshed with the first inner gear ring and the second inner gear ring at the same time, and the output gear is fixed on the second inner gear ring.
4. A gearbox according to claim 3, in which each planet wheel is provided with a first axle hole, and the first planet carrier comprises a first support disc and at least three first axles provided on the first support disc, one first axle cooperating with one first axle hole.
5. A gearbox according to claim 3, characterised in that the second planet carrier is provided with a connecting column and the third planet carrier is provided with a socket, the connecting column being placed in the socket.
6. A gearbox according to claim 3, in which each twin planet has two connecting ends, one of the connecting ends of each twin planet being provided with a second shaft, the other connecting end of each twin planet being provided with a second shaft aperture, the second carrier being provided with a third shaft aperture, the third carrier being provided with a third shaft, the second shaft engaging the third shaft aperture, and the third shaft engaging the second shaft aperture.
7. The gearbox of claim 1, wherein the housing comprises a fixed cover and a chassis arranged at the bottom of the fixed cover, and the bottom of the fixed cover is connected with the chassis in a clamping manner.
8. The gearbox of claim 7, wherein a clamping groove is formed in the bottom of the fixed cover, a buckle is arranged on the chassis, and the clamping groove and the buckle are mutually clamped or separated.
9. The gearbox of claim 1, wherein the housing, the first stage planetary gears, the second stage planetary gears, and the output gears are made of plastic.
10. A geared electrical machine comprising a motor and a gearbox mounted on the motor, characterised in that the gearbox is as claimed in any one of claims 1 to 9, the rotational axis of the motor being connected to the first stage planet gears.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920423723.0U CN210013982U (en) | 2019-04-01 | 2019-04-01 | Gear box and gear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920423723.0U CN210013982U (en) | 2019-04-01 | 2019-04-01 | Gear box and gear motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210013982U true CN210013982U (en) | 2020-02-04 |
Family
ID=69314215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920423723.0U Expired - Fee Related CN210013982U (en) | 2019-04-01 | 2019-04-01 | Gear box and gear motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210013982U (en) |
-
2019
- 2019-04-01 CN CN201920423723.0U patent/CN210013982U/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: 20200204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |