CN107606070A - Gear reduction unit - Google Patents
Gear reduction unit Download PDFInfo
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- CN107606070A CN107606070A CN201711070803.4A CN201711070803A CN107606070A CN 107606070 A CN107606070 A CN 107606070A CN 201711070803 A CN201711070803 A CN 201711070803A CN 107606070 A CN107606070 A CN 107606070A
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- gear
- support
- reduction unit
- planetary
- planetary gears
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Abstract
The invention discloses a kind of gear reduction unit, including shell and gear mechanism, casing is outside gear mechanism, gear mechanism includes first order planetary gears and second level planetary gears, first order gear mechanism is linked with second level gear mechanism, first order planetary gears and second level planetary gears include central gear and three planetary gears, planetary gear engages with central gear, the inwall of shell is provided with ring gear, ring gear is meshed with the planetary outline tooth of gear mechanism, and the number of teeth of ring gear is 33.The number of teeth of the ring gear of the shell of the gear reduction unit of the present invention is 33, and this causes gear to have maximum modulus in limited space, and modulus is bigger, the dedendum strength of gear is bigger, ability to bear is also bigger, thus, substantially increases the service life of the gear reduction unit of the present invention.
Description
Technical field
The present invention relates to a kind of deceleration device, more particularly to a kind of gear reduction unit.
Background technology
Existing window curtain decelerator is mostly multistage involute planet gear gear reduction structure, while built-in in decelerator
Mechanical brake or brake device of electric, gear wheel on the few gear engagement output shaft of the number of teeth on planetary reduction gear power transmission shaft with
Reach the purpose of deceleration.
The existing gear reduction unit for curtain modulus in the space of restriction is all smaller, Gear Root insufficient strength,
Latch easily occurs and even damages gear, so as to influence the service life of decelerator.
The content of the invention
It is an object of the invention to provide a kind of gear reduction unit, one of above mentioned problem at least can solve the problem that.
To achieve the above object, according to an aspect of the invention, there is provided a kind of gear reduction unit, including shell and tooth
Mechanism is taken turns, for casing outside gear mechanism, gear mechanism includes first order planetary gears and second level planetary gear machine
Structure, first order gear mechanism include the first central gear and three the first planetary gears, and second level gear mechanism is included in second
Heart gear and three the second planetary gears, first order gear mechanism are linked with second level gear mechanism, three the first planets
Gear engages with the first central gear, and three the second planetary gears engage with the second central gear, and the inwall of shell is provided with ring
Shape gear, ring gear are meshed with the first planetary gear of gear mechanism and the second planetary outline tooth, annular
The number of teeth of gear is 33.
Because the diameter of the shell of the decelerator for roller shutter industry is typically small, the shell of gear reduction unit of the invention
The number of teeth of ring gear be 33, this causes gear to have maximum modulus in limited space, and modulus is bigger, gear
Dedendum strength is bigger, and ability to bear is also bigger, thus, substantially increases the service life of the gear reduction unit of the present invention.
In some embodiments, the number of teeth of the first central gear and the second central gear is 15 or 9, the first planet tooth
Wheel and the second planetary number of teeth are 9 or 12.Thus, first order planetary gears and second level planetary gears
Combination has three kinds, and three kinds of different gear reduction units of speed can be combined into according to different requirements, meet various demands,
It is simple to operate, strong applicability.
In some embodiments, gear mechanism also includes first support, second support and the 3rd support, first support,
Second support and the 3rd support are connected successively, and the first planetary gear is located at first support side, the first central gear and
Two planetary gears are respectively arranged on the both sides of second support, and the second central gear is located at the 3rd support side, first support and second
The centralized positioning tip and dowel are equipped with support.Thus, the centralized positioning tip is used for fixed center gear, and dowel is used to fix
Planetary gear, so as to realize that the transmission of first support, second support and the 3rd support is connected, ensure the biography of gear mechanism
It is dynamic.
In some embodiments, gear reduction unit also includes input mechanism, and input mechanism is connected with gear mechanism, input
Mechanism includes input shaft and axle sleeve, and input shaft is fixedly connected with axle sleeve, and the centrally disposed perforate of axle sleeve, first support opposite side is provided with
Bulge-structure, perforate are engaged with bulge-structure.Thus, axle sleeve can be placed on outside the bulge-structure of first support, so as to realize
Input mechanism is flexibly connected with gear mechanism, easy disassembly.
In some embodiments, gear reduction unit also includes spring, and outside bulge-structure, spring is provided with spring housing
Spring terminal, axle sleeve are provided with stopper slot, and stopper slot is engaged with spring terminal.Thus, control spring terminal can cause input mechanism
Can only one-directional rotation, so as to ensure that input mechanism can only be inputted unidirectionally.
In some embodiments, gear reduction unit also includes braking mechanism, and braking mechanism is connected with gear mechanism transmission,
Braking mechanism includes two brake shoes, two brake shoes center symmetric settings, is equipped with fixing hole on two brake shoes, the 3rd
Frame opposite side is provided with center projection and two projections, the relative both sides for being located at center projection of two projections, projection and fixing hole phase
Coordinate.Thus, braking mechanism can slow down the output speed of gear mechanism, realize the decelerating effect of gear reduction unit.
In some embodiments, braking mechanism also includes several metal derbies, and several loads are additionally provided with brake shoes
Groove, metal derby are removably mounted to load in groove.Thus, the weight of brake shoes can be adjusted as needed, then cooperating teeth
Three kinds of combinations of mechanism are taken turns, gear reduction unit of the invention then has multiple combinations mode, meets a variety of demands.
Beneficial effects of the present invention are：It is of the invention because the diameter of the shell of the decelerator for roller shutter industry is fixed
The number of teeth of the ring gear of the shell of gear reduction unit is 33, and this causes gear to have maximum modulus in limited space,
And modulus is bigger, the dedendum strength of gear is bigger, and ability to bear is also bigger, thus, substantially increases the The gear deceleration of the present invention
The service life of device；The combination of two groups of planetary gears and central gear has three kinds, then coordinates the brake shoes weight of braking mechanism
Amount regulation, a variety of speed can be combined into according to different requirements than different gear reduction units, meet various demands, operation letter
It is single, strong applicability.Therefore, gear reduction unit of the invention has the advantages that module is big, service life is long, strong applicability.
Brief description of the drawings
Fig. 1 is one of structural representation of gear reduction unit of the present invention；
Fig. 2 is the two of the structural representation of the gear reduction unit of the present invention；
Fig. 3 is the sectional view of gear reduction unit shown in Fig. 1；
Fig. 4 is the schematic diagram that the ring gear of the shell of gear reduction unit shown in Fig. 1 coordinates with gear mechanism；
Fig. 5 is the schematic diagram that the ring gear of the shell of the gear reduction unit of embodiment 2 coordinates with gear mechanism；
Fig. 6 is the schematic diagram that the ring gear of the shell of the gear reduction unit of embodiment 3 coordinates with gear mechanism.
Embodiment
The invention will now be described in further detail with reference to the accompanying drawings.
Embodiment 1
As Figure 1-4, the gear reduction unit, including shell 1 and gear mechanism 3.Shell 1 is sheathed on outside gear mechanism 3.
Gear mechanism 3 includes first order planetary gears 31 and second level planetary gears 32, and first order gear mechanism 31 includes
First central gear 311 and three the first planetary gears 312, second level gear mechanism 32 include the second central gear 321 and three
Individual second planetary gear 322, three the first planetary gears 312 engage with the first central gear 311, three the second planetary gears
322 engage with the second central gear 321, and first order gear mechanism 31 is linked with second level gear mechanism 32, shell 1 it is interior
Wall is provided with ring gear 11, the first planetary gear 312 and the second planetary gear 322 of ring gear 11 and gear mechanism 3
Outline tooth is meshed, and the number of teeth of ring gear 11 is 33.
The first planetary gear 312 and the second planetary gear 322 of the gear reduction unit of present embodiment are three.Three
Planetary gear is uniformly at intervals around central gear, and be connected respectively with central gear.Thus, power can be advantageous to
Balanced transmission, transmission are relatively steady.
Because the diameter fixation of the shell 1 of the decelerator for roller shutter industry is typically small, the gear of present embodiment subtracts
The number of teeth of the ring gear 11 of the shell 1 of fast device is 33, and this causes gear to have maximum modulus in limited space.This reality
The module for applying the gear reduction unit of mode is 0.75.Modulus is bigger, and the dedendum strength of gear is bigger, and ability to bear is also got over
Greatly, thus, the service life of the gear reduction unit of present embodiment is substantially increased.
Gear mechanism 3 also includes first support 33, the support 35 of second support 34 and the 3rd, first support 33, second support
34 and the 3rd support 35 be connected successively, the first planetary gear 312 is located at the side of first support 33, the first central gear 311
The both sides of second support 34 are respectively arranged on the second planetary gear 322, the second central gear 321 is located at the side of the 3rd support 35.
The centralized positioning tip 331 and dowel 332 are equipped with first support 33 and second support 34.The first support 33 of present embodiment
It it is three with the dowel 332 in second support 34.The central gear 311 of the centralized positioning tip 331 and first, the second central gear
321 are engaged；312, three the second planetary gears 322 of dowel 332 and three the first planetary gears are engaged.Determine at center
The position tip 331 is used for fixed center gear, and dowel 332 is used to fix planetary gear, so as to first support 33, the and of second support 34
3rd support 35 can coordinate drive connection, ensure the smooth transmission of gear mechanism 3.
As shown in figure 4, the number of teeth of the first central gear 311 is 15, the number of teeth of three the first planetary gears 312 is 9, second
The number of teeth of central gear 321 is 9, and the number of teeth of three the second planetary gears 322 is 12.According to the calculation formula of rotating ratio, this reality
The gear speed ratio for applying the gear reduction unit of mode is 17.2.When the first central gear 311 the number of teeth be 9, three the first planets
The number of teeth of gear 312 is 12, and the number of teeth of the second central gear 321 is 15, when the number of teeth of three the second planetary gears 322 is 9, tooth
The gear speed ratio of wheel decelerator is constant, remains as 17.2.
The gear reduction unit of present embodiment also includes input mechanism 2.Input mechanism 2 is connected with gear mechanism 3.It is defeated
Entering mechanism 2 includes input shaft 21 and axle sleeve 22.Input shaft 21 is fixedly connected with axle sleeve 22, the centrally disposed perforate 221 of axle sleeve 22, the
The opposite side of one support 33 is provided with bulge-structure 333, and perforate 221 is engaged with bulge-structure 333.Thus, axle sleeve 22 can be placed on
Outside the bulge-structure 333 of first support 33, so as to realize the drive connection of input mechanism 2 and gear mechanism 3, easy disassembly.
The gear reduction unit of present embodiment also includes spring 4.Spring 4 is sheathed on outside bulge-structure 333, is set on spring 4
There is spring terminal 41, axle sleeve 22 is provided with stopper slot 222, and stopper slot 222 is engaged with spring terminal 41.Because spring 4 is outwards expansion
, inwardly to shrink, therefore, the stopper slot 222 on axle sleeve 22 is engaged with spring terminal 41, can cause the one-directional rotation of axle sleeve 2,
So as to ensure that input mechanism 2 can only be inputted unidirectionally.
The gear reduction unit of present embodiment also includes braking mechanism 5, and braking mechanism 5 is connected with gear mechanism 3, stops
Mechanism of car 5 includes two brake shoes 51, two center symmetric settings of brake shoes 51, and fixing hole is equipped with two brake shoes 51
511, the opposite side of the 3rd support 35 is provided with center projection 351 and two projections 352, and two projections 352 are relative to be located at center projection
351 both sides, projection 352 are engaged with fixing hole 511.Thus, braking mechanism 5 can slow down the output speed of gear mechanism 3,
The decelerating effect of gear reduction unit is realized, roller shutter is slowly transferred.
Braking mechanism 5 also includes several metal derbies 52, and several load grooves 512, metal derby are additionally provided with brake shoes 51
52 are removably mounted to load in groove 512.The load groove 512 of present embodiment is two.Thus, the weight of brake shoes 51 has not
Add metal derby plus one block of metal derby plus two blocks of metal derbies, three kinds of selections, then the combination side of three kinds of speed ratios of mate gear mechanism
Formula, gear reduction unit of the invention then have nine kinds of combinations, disclosure satisfy that a variety of demands, substantially increase this implementation
The applicability of the gear reduction unit of mode.
In addition, the gear reduction unit of present embodiment also includes end cap 6, and end cap 6 is provided with Elastic buckle 61, shell
1 is provided with neck 12, and neck 12 is interlocked with Elastic buckle 61.Thus, end cap 6 can prevent that brake shoes 5 from flying out decelerator, bullet
Property buckle 61 and neck 12 cooperation easy disassembly end cap 6.
One end of shell 1 is provided with perforate 13, and perforate 13 is engaged with the input shaft 21 of input mechanism 2, the outer wall of shell 1
One end is provided with annular knurl 14, and annular knurl 14 can be stuck in the inwall of the main shaft with roller shutter, so as to realize that shell 1 connects with the fixed of main shaft
Connect, complete output.
Mounting hole 211, convenient and roller shutter controller or other curtain controls are additionally provided with the input shaft 21 of input mechanism 2
Device is connected.
Embodiment 2
As Figure 1-4, the gear reduction unit, including shell 1 and gear mechanism 3.Shell 1 is sheathed on outside gear mechanism 3.
Gear mechanism 3 includes first order planetary gears 31 and second level planetary gears 32, and first order gear mechanism 31 includes
First central gear 311 and three the first planetary gears 312, second level gear mechanism 32 include the second central gear 321 and three
Individual second planetary gear 322, three the first planetary gears 312 engage with the first central gear 311, three the second planetary gears
322 engage with the second central gear 321, and first order gear mechanism 31 is linked with second level gear mechanism 32, shell 1 it is interior
Wall is provided with ring gear 11, the first planetary gear 312 and the second planetary gear 322 of ring gear 11 and gear mechanism 3
Outline tooth is meshed, and the number of teeth of ring gear 11 is 33.
The first planetary gear 312 and the second planetary gear 322 of the gear reduction unit of present embodiment are three.Three
Planetary gear is uniformly at intervals around central gear, and be connected respectively with central gear.Thus, power can be advantageous to
Balanced transmission, transmission are relatively steady.
Because the diameter fixation of the shell 1 of the decelerator for roller shutter industry is typically small, the gear of present embodiment subtracts
The number of teeth of the ring gear 11 of the shell 1 of fast device is 33, and this causes gear to have maximum modulus in limited space.This reality
The module for applying the gear reduction unit of mode is 0.75.Modulus is bigger, and the dedendum strength of gear is bigger, and ability to bear is also got over
Greatly, thus, the service life of the gear reduction unit of present embodiment is substantially increased.
Gear mechanism 3 also includes first support 33, the support 35 of second support 34 and the 3rd, first support 33, second support
34 and the 3rd support 35 be connected successively, the first planetary gear 312 is located at the side of first support 33, the first central gear 311
The both sides of second support 34 are respectively arranged on the second planetary gear 322, the second central gear 321 is located at the side of the 3rd support 35.
The centralized positioning tip 331 and dowel 332 are equipped with first support 33 and second support 34.The first support 33 of present embodiment
It it is three with the dowel 332 in second support 34.The central gear 311 of the centralized positioning tip 331 and first, the second central gear
321 are engaged；312, three the second planetary gears 322 of dowel 332 and three the first planetary gears are engaged.Determine at center
The position tip 331 is used for fixed center gear, and dowel 332 is used to fix planetary gear, so as to first support 33, the and of second support 34
3rd support 35 can coordinate drive connection, ensure the smooth transmission of gear mechanism 3.
As shown in figure 5, the number of teeth of the first central gear 311 and the second central gear 321 is 15, three the first planet teeth
The number of teeth of wheel 312 and three the second planetary gears 322 is 9.According to the calculation formula of rotating ratio, the gear of present embodiment subtracts
The gear speed ratio of fast device is 10.7.
Embodiment 3
As Figure 1-4, the gear reduction unit, including shell 1 and gear mechanism 3.Shell 1 is sheathed on outside gear mechanism 3.
Gear mechanism 3 includes first order planetary gears 31 and second level planetary gears 32, and first order gear mechanism 31 includes
First central gear 311 and three the first planetary gears 312, second level gear mechanism 32 include the second central gear 321 and three
Individual second planetary gear 322, three the first planetary gears 312 engage with the first central gear 311, three the second planetary gears
322 engage with the second central gear 321, and first order gear mechanism 31 is linked with second level gear mechanism 32, shell 1 it is interior
Wall is provided with ring gear 11, the first planetary gear 312 and the second planetary gear 322 of ring gear 11 and gear mechanism 3
Outline tooth is meshed, and the number of teeth of ring gear 11 is 33.
The first planetary gear 312 and the second planetary gear 322 of the gear reduction unit of present embodiment are three.Three
Planetary gear is uniformly at intervals around central gear, and be connected respectively with central gear.Thus, power can be advantageous to
Balanced transmission, transmission are relatively steady.
Because the diameter fixation of the shell 1 of the decelerator for roller shutter industry is typically small, the gear of present embodiment subtracts
The number of teeth of the ring gear 11 of the shell 1 of fast device is 33, and this causes gear to have maximum modulus in limited space.This reality
The module for applying the gear reduction unit of mode is 0.75.Modulus is bigger, and the dedendum strength of gear is bigger, and ability to bear is also got over
Greatly, thus, the service life of the gear reduction unit of present embodiment is substantially increased.
Gear mechanism 3 also includes first support 33, the support 35 of second support 34 and the 3rd, first support 33, second support
34 and the 3rd support 35 be connected successively, the first planetary gear 312 is located at the side of first support 33, the first central gear 311
The both sides of second support 34 are respectively arranged on the second planetary gear 322, the second central gear 321 is located at the side of the 3rd support 35.
The centralized positioning tip 331 and dowel 332 are equipped with first support 33 and second support 34.The first support 33 of present embodiment
It it is three with the dowel 332 in second support 34.The central gear 311 of the centralized positioning tip 331 and first, the second central gear
321 are engaged；312, three the second planetary gears 322 of dowel 332 and three the first planetary gears are engaged.Determine at center
The position tip 331 is used for fixed center gear, and dowel 332 is used to fix planetary gear, so as to first support 33, the and of second support 34
3rd support 35 can coordinate drive connection, ensure the smooth transmission of gear mechanism 3.
As shown in fig. 6, the number of teeth of the first central gear 311 and the second central gear 321 is 9, three the first planet teeth
The number of teeth of wheel 312 and three the second planetary gears 322 is 12.According to the calculation formula of rotating ratio, the gear of present embodiment
The gear speed ratio of decelerator is 23.6.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, not
On the premise of departing from the invention design, various modifications and improvements can be made, these belong to the protection model of the present invention
Enclose.
Claims (7)
1. gear reduction unit, it is characterised in that including shell (1) and gear mechanism (3), the shell (1) is sheathed on gear mechanism
Outside, the gear mechanism (3) includes first order planetary gears (31) and second level planetary gears (32), institute to structure (3)
Stating first order gear mechanism (31) includes the first central gear (311) and three the first planetary gears (312), the second level tooth
Wheel mechanism (32) includes the second central gear (321) and three the second planetary gears (322), three first planetary gears
(312) engaged with the first central gear (311), three second planetary gears (322) are nibbled with the second central gear (321)
Close, the first order gear mechanism (31) is linked with second level gear mechanism (32), and the inwall of the shell (1) is provided with
Ring gear (11), the ring gear (11) and the first planetary gear (312) and the second planetary gear of gear mechanism (3)
(322) outline tooth is meshed, and the number of teeth of the ring gear (11) is 33.
2. gear reduction unit according to claim 1, it is characterised in that in first central gear (311) and second
The number of teeth of heart gear (322) is 15 or 9, and the number of teeth of first planetary gear (312) and the second planetary gear (322) is
9 or 12.
3. gear reduction unit according to claim 1, it is characterised in that the gear mechanism (3) also includes first support
(33), second support (34) and the 3rd support (35), the first support (33), second support (34) and the 3rd support (35) according to
Secondary drive connection, first planetary gear (312) are located at first support (33) side, first central gear (311) and
Second planetary gear (322) is respectively arranged on the both sides of second support (34), and second central gear (321) is located at the 3rd support
(35) side, the centralized positioning tip (331) and dowel (332) are equipped with the first support (33) and second support (34).
4. gear reduction unit according to claim 3, it is characterised in that also including input mechanism (2), the input mechanism
(2) it is connected with gear mechanism (3), the input mechanism (2) includes input shaft (21) and axle sleeve (22), the input shaft
(21) it is fixedly connected with axle sleeve (22), the centrally disposed perforate of the axle sleeve (22) (221), first support (33) opposite side is set
There is bulge-structure (333), the perforate (221) is engaged with bulge-structure (333).
5. gear reduction unit according to claim 4, it is characterised in that be also arranged including spring (4), the spring (4)
In bulge-structure (333) outside, the spring (4) is provided with spring terminal (41), and the axle sleeve (22) is provided with stopper slot (222),
The stopper slot (222) is engaged with spring terminal (41).
6. gear reduction unit according to claim 4, it is characterised in that also including braking mechanism (5), the braking mechanism
(5) it is connected with gear mechanism (3), the braking mechanism (5) includes two brake shoes (51), described two brake shoes (51)
Center symmetric setting, fixing hole (511) is equipped with described two brake shoes (51), the 3rd support (35) opposite side is provided with
Center projection (351) and two projections (352), the relative both sides for being located at center projection (351) of described two projections (352), institute
Projection (352) is stated to be engaged with fixing hole (511).
7. gear reduction unit according to claim 6, it is characterised in that the braking mechanism (5) also includes several gold
Belong to block (52), several load grooves (512) are additionally provided with the brake shoes (51), the metal derby (52) is removably mounted to bear
Carry in groove (512).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711070803.4A CN107606070A (en) | 2017-11-03 | 2017-11-03 | Gear reduction unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711070803.4A CN107606070A (en) | 2017-11-03 | 2017-11-03 | Gear reduction unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107606070A true CN107606070A (en) | 2018-01-19 |
Family
ID=61084885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711070803.4A Withdrawn CN107606070A (en) | 2017-11-03 | 2017-11-03 | Gear reduction unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107606070A (en) |
Citations (9)
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|---|---|---|---|---|
| JP2001090792A (en) * | 1999-09-22 | 2001-04-03 | Toyo Denso Co Ltd | Planetary gear speed reduction mechanism |
| JP2008125574A (en) * | 2006-11-17 | 2008-06-05 | Sanko Shoji Kk | Speed reducer of rotary shaft |
| CN201173280Y (en) * | 2008-02-18 | 2008-12-31 | 东风德纳车桥有限公司 | Planetary gear of wheel hem retarding mechanism for heavy-duty car |
| CN201797405U (en) * | 2010-08-19 | 2011-04-13 | 埃克森塞弗(苏州)电梯部件科技有限公司 | Planetary gear reducing motor with small modulus and helical gears |
| CN202031464U (en) * | 2011-03-07 | 2011-11-09 | 崔文茂 | Reel reduction gear for invisible screen |
| CN102748430A (en) * | 2012-06-13 | 2012-10-24 | 李飞宇 | Planetary reduction gear box |
| CN202500966U (en) * | 2012-01-19 | 2012-10-24 | 陈中和 | Deceleration mechanism for driving device |
| DE102013221419A1 (en) * | 2013-10-09 | 2015-04-09 | Michael Müller | Sight / sun or fly protection and centrifugal brake with freewheel for a sight / sun or fly protection |
| CN207470702U (en) * | 2017-11-03 | 2018-06-08 | 佛山市南海区金沙朗丽斯窗饰制品厂（普通合伙） | Gear reduction unit |
-
2017
- 2017-11-03 CN CN201711070803.4A patent/CN107606070A/en not_active Withdrawn
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|---|---|---|---|---|
| JP2001090792A (en) * | 1999-09-22 | 2001-04-03 | Toyo Denso Co Ltd | Planetary gear speed reduction mechanism |
| JP2008125574A (en) * | 2006-11-17 | 2008-06-05 | Sanko Shoji Kk | Speed reducer of rotary shaft |
| CN201173280Y (en) * | 2008-02-18 | 2008-12-31 | 东风德纳车桥有限公司 | Planetary gear of wheel hem retarding mechanism for heavy-duty car |
| CN201797405U (en) * | 2010-08-19 | 2011-04-13 | 埃克森塞弗(苏州)电梯部件科技有限公司 | Planetary gear reducing motor with small modulus and helical gears |
| CN202031464U (en) * | 2011-03-07 | 2011-11-09 | 崔文茂 | Reel reduction gear for invisible screen |
| CN202500966U (en) * | 2012-01-19 | 2012-10-24 | 陈中和 | Deceleration mechanism for driving device |
| CN102748430A (en) * | 2012-06-13 | 2012-10-24 | 李飞宇 | Planetary reduction gear box |
| DE102013221419A1 (en) * | 2013-10-09 | 2015-04-09 | Michael Müller | Sight / sun or fly protection and centrifugal brake with freewheel for a sight / sun or fly protection |
| CN207470702U (en) * | 2017-11-03 | 2018-06-08 | 佛山市南海区金沙朗丽斯窗饰制品厂（普通合伙） | Gear reduction unit |
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Application publication date: 20180119 |