CN2725627Y - Oscillating adjustable gear driving device of biphase cam shock wave - Google Patents
Oscillating adjustable gear driving device of biphase cam shock wave Download PDFInfo
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- CN2725627Y CN2725627Y CN 200420077535 CN200420077535U CN2725627Y CN 2725627 Y CN2725627 Y CN 2725627Y CN 200420077535 CN200420077535 CN 200420077535 CN 200420077535 U CN200420077535 U CN 200420077535U CN 2725627 Y CN2725627 Y CN 2725627Y
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- 230000035939 shock Effects 0.000 title claims abstract description 62
- 239000011159 matrix material Substances 0.000 claims description 25
- 230000005540 biological transmission Effects 0.000 abstract description 21
- 238000005096 rolling process Methods 0.000 abstract description 8
- 210000000515 tooth Anatomy 0.000 description 67
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 230000005284 excitation Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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Abstract
The utility model relates to an oscillating adjustable gear driving device of biphase cam shock wave, comprising a shock wave device, an oscillating adjustable gear, an adjustable gear carrier and an internal gear, wherein, the oscillating adjustable gear is composed of an adjustable gear basal body and a needle bearing, the adjustable gear carrier is composed of an output disk which is fixedly connected with an output shaft, a floating disk, and a pin shaft whose both ends are fixedly connected, and the oscillating adjustable gear is arranged between the shock wave device and the internal gear. The utility model is characterized in that the shock wave device is composed of an input shaft and a biphase cam, and the profile of the biphase cam is a standard geometry axial symmetry curve and the biphase cam is fixedly connected with an input shaft without eccentricity. When the input shaft drives the biphase cam to rotate, the middle sections of the biphase cam and the adjustable gear basal body can be engaged by rolling contact, and then the adjustable gear basal body can be driven to rotate around the pin shaft, and simultaneously, engagement between the needle bearings on both sides of the adjustable gear basal body and the internal gear by rolling contact can be realized; furthermore, the oscillating adjustable gear can push the adjustable gear carrier to rotate, and the transmission of motion and power can be completed. The utility model can realize the stressed self-balance of the shock wave device and the case. The utility model has the advantage of simple structure, high transmission efficiency, strong bearing capacity, low vibration noise, etc.
Description
Technical field
The utility model relates to a kind of wobble gear less-tooth-difference planetary transmission of double phase cam shock wave, is used to realize motion and transmission of power between the diaxon, belongs to the mechanical transmissioning technology field.
Background technique
The difference that Oscillating Tooth Gear Reducer is formed by its transmission principle and structure can mainly be divided into push-rod oscillating tooth transmission, roller oscillating tooth transmission and Swing Movable Teeth Drive.Wherein, the remarkable difference of Swing Movable Teeth Drive and push-rod oscillating tooth transmission and roller oscillating tooth transmission is the oscillating tooth with forced-slip in the oscillating tooth groove, changes the wobble gear that the axis pin of column on movable teeth rack rotates into.The outstanding advantage of Swing Movable Teeth Drive is to have overcome the skimming wear of oscillating tooth in the oscillating tooth groove, improved transmission efficiency, and the structure of movable teeth rack is more succinct.Deficiency is that wobble gear is an assembly parts, and design can cause the radial dimension of Swing Movable Teeth Drive to increase not at that time, has friction between wobble gear and the internal gear, produces heating and wearing and tearing.For overcoming above deficiency, application number is that 02222398.3 utility model patent has been announced " rolling contact type wobble gear planetary reducer ".This device mainly is made up of input shaft 1, eccentric bushing 19, needle bearing A, flange shock wave device outer toroid 20, oscillating tooth matrix 3, needle bearing 4, internal gear 5, axis pin of column 6, ball bearing 14, output disc 7, floating disc 8 and output shaft 9, sees shown in Figure 9.Wherein, eccentric bushing 19, needle bearing A and flange shock wave device outer toroid 20 are formed the flange shock wave device; Two identical eccentric bushings of structure, the 180 ° of symmetric arrangement that interlace are installed on the input shaft 1, two eccentric bushings are respectively installed the needle bearing A of a same model outward, two needle bearing A install two flange shock wave device outer toroid 20 that structure is identical again respectively outward, thereby obtain the flange shock wave device of two 180 ° of symmetric arrangement that interlace.Wobble gear is a three-stage structure, is made up of oscillating tooth matrix 3 and two needle bearings 4.Output disc 7, axis pin of column 6 and floating disc 8 constitute movable teeth rack.Wobble gear contacts engagement with flange shock wave device outer toroid 20 with internal gear 5 respectively between flange shock wave outer toroid 20 and internal gear 5.The curved surface of the flange shock wave device outer toroid of this model utility and the engagement of oscillating tooth matrix is a periphery, and internal gear 5 is the envelope surface of wobble gear in a series of engaging position with the Surface of action that is installed in the needle bearing 4 on the oscillating tooth matrix 3.This model utility adopts segmentation, isometrical periphery wobble gear, between oscillating tooth matrix 3 and axis pin of column 6, between oscillating tooth matrix 3 and the flange shock wave device outer toroid 20, between the needle bearing 4 on the oscillating tooth and the internal gear 5, all can form to roll and contact engagement, thereby reduce friction, improved transmission efficiency.The number of teeth z of this model utility wobble gear
hNumber of teeth z with internal gear 7
gBetween the pass be z
g=z
h± 1.
Identical with existing most active-tooth transmissions, the shock wave device of " rolling contact type wobble gear planetary reducer " model utility is installed on input shaft prejudicially, and the Transmitted chains that is made of shock wave device, wobble gear and internal gear 5 in drive mechanism is a row or two rows.When being a row, the bearing capacity of transmission is relatively low, and because the eccentric installation of shock wave device will produce very big unbalanced force on shock wave device and casing, causes bigger bearing load and casing excitation force; When being two rows, two shock wave devices adopt the 180 ° of arranged off-centre that interlace, though can realize the stress balance of shock wave device and casing, certain interval are arranged between two shock wave devices, in transmission process, certainly lead to the tilting moment that acts on casing, also be difficult to fundamentally avoid the vibration of complete machine.
Summary of the invention
The purpose of this utility model is: the eccentric installation of shock wave device causes problems such as bigger bearing load, casing excitation force and tilting moment in the aforesaid Swing Movable Teeth Drive in order to solve, and designed the swing movable gear driving device of a kind of double phase cam shock wave of the present utility model.
The technological scheme that swing movable gear driving device adopted of a kind of double phase cam shock wave that the utility model provides is shown in Fig. 1,2,3,4,5,6,7 and 8; This device includes shock wave device, wobble gear, movable teeth rack and internal gear.The oscillating tooth matrix 3 suit needle bearings 4 that have eccentric opening constitute wobble gear.The output disc 7, floating disc 8 and the two ends that connect firmly with output shaft 9 constitute movable teeth rack with the axis pin of column 6 that output disc 7 and floating disc 8 connect firmly respectively.Be set on the axis pin of column 6 and rotating wobble gear between shock wave device and internal gear 5, the stage casing periphery of oscillating tooth matrix 3 contacts engagement with double phase cam 2 rollings, needle bearing 4 contacts engagement with internal gear 5 rollings.The two ends of input shaft 1 are supported on output disc 7 and the right end cap 12 by ball bearing 13,11, the output shaft 9 that connects firmly with movable teeth rack is supported on the frame 15 by ball bearing 14, right end cap 12 is connected with the two ends of internal gear 5 respectively with frame 15, and this device is connected as a single entity.It is characterized in that: shock wave device is made up of input shaft 1 and double phase cam 2, and the profile of double phase cam 2 is the geometrical axis symmetrical curve of standard, and double phase cam 2 is fixed on input shaft 1 without acceptance of persons.
In the swing movable gear driving device of a kind of double phase cam shock wave described in the utility model, the profile of double phase cam 2 is elliptic curve or two eccentric arc curve or two-phase class cycloid or two-phase cosine curve.
In the swing movable gear driving device of a kind of double phase cam shock wave described in the utility model, the profile of internal gear 5 is that wobble gear axis pin of column 6 on movable teeth rack under double phase cam 2 drives is made oscillating motion, while double phase cam 2 and movable teeth rack are done uniform circular motion again by given speed ratio envelope.
In the swing movable gear driving device of a kind of double phase cam shock wave described in the utility model, the teeth of internal gear 5 middle part is processed with a circular groove 17; The width of double phase cam 2 is less than the width of oscillating tooth matrix 3 middle part major diameter periphery sections, and the width of circular groove 17 is greater than the width of oscillating tooth matrix 3 middle part major diameter periphery sections.
In the swing movable gear driving device of a kind of double phase cam shock wave described in the utility model, the number of teeth z of wobble gear
hNumber of teeth z with internal gear 5
gBetween the pass be z
g=z
h± 2.
In the swing movable gear driving device of a kind of double phase cam shock wave described in the utility model, the Transmitted chains that is made of shock wave device, wobble gear, movable teeth rack and internal gear 5 can be set to more than the row.When being many rows, the angular position of arranging double phase cam 2 identical more, and the angular position of arranging wobble gear identical more, and the angular position of arranging internal gear 5 also identical more.Between adjacent two row's Transmitted chainss separator disc 16 is housed.
In the swing movable gear driving device of a kind of double phase cam shock wave described in the utility model, the Transmitted chains that is made of shock wave device, wobble gear, movable teeth rack and internal gear 5 is during for many rows, the angular position of adjacent two row's double phase cams 2 interlaces 90 ° each other, the angular position of adjacent two row's wobble gears interlaces 180 ° around the axis of axis pin of column 6 each other, and the angular position of adjacent two row's internal gears 5 interlaces 90 ° each other.Between adjacent two row's Transmitted chainss separator disc 16 is housed.
Working principle of the present utility model is as described below: when input shaft 1 drives double phase cam 2 rotations, double phase cam 2 rolls with the stage casing of oscillating tooth matrix 3 and contacts engagement, drive oscillating tooth matrix 3 around axis pin of column 6 swings, realize that simultaneously the needle bearing 4 that is installed in oscillating tooth matrix 3 both sides contacts engagement with the rolling of internal gear 5, and then make wobble gear promote the movable teeth rack rotation that connects firmly with output shaft 9, finish the transmission of motion and power.
Outstanding advantage of the present utility model is that double phase cam 2 adopts axially symmetric structures, needn't be on input shaft 1 eccentric the installation, double phase cam 2 around its geometrical center revolution just can realize shock wave and guarantee shock wave device and casing be subjected to force self-balanced.No matter adopt monolithic double phase cam 2 still to adopt multi-disc double phase cam 2 shock waves in transmission device, shock wave device and casing all are subjected to force self-balanced, do not have the tilting moment that acts on casing, can avoid the vibrational excitation of transmission device from transmission principle.In addition, also have simple in structure, transmission efficiency is high, bearing capacity reaches advantages such as vibration noise is low by force.
Description of drawings
Fig. 1 structural representation of the present utility model;
Fig. 2 wobble gear structural representation of the present utility model;
Fig. 3 movable teeth rack structural representation of the present utility model;
Fig. 4 separator disc structural representation of the present utility model;
The stressed schematic representation of Fig. 5 double phase cam of the present utility model;
Fig. 6 inner gear structure schematic representation of the present utility model;
Fig. 7 structural representation of the present utility model (mode of execution two);
Fig. 8 structural representation of the present utility model (mode of execution three);
The rolling contact type wobble gear planetary reducer structural representation of Fig. 9 prior art;
Among Fig. 1～Fig. 9:
1, input shaft, 2, double phase cam, 3, the oscillating tooth matrix, 4, needle bearing,
5, internal gear, 6, axis pin of column, 7, output disc, 8, floating disc, 9, output shaft,
10, key, ball bearing 11,12, right end cap, ball bearing 13, ball bearing 14,
15, frame, 16, separator disc, 17, circular groove, 18, the axis pin of column sleeve,
19, eccentric bushing, 20, flange shock wave device outer toroid, needle bearing A.
Embodiment
Mode of execution one
Fig. 1 is a mode of execution of the present utility model.The structure of this device is as described below: form Transmitted chains by shock wave device, wobble gear, movable teeth rack and internal gear 5.Double phase cam 2 and input shaft 1 connect firmly the formation shock wave device by key 10.The right-hand member of input shaft 1 is bearing on the right end cap 12 by ball bearing 11, and left end is supported on output disc 7 by ball bearing 13.Output shaft 9 left ends are supported on frame 15 with ball bearing 14, and right-hand member and output disc 7 connect firmly.Movable teeth rack is made of output disc 7, floating disc 8 and axis pin of column 6.Output disc 7 and floating disc 8 are by being fixedly connected along the axis pin of column of circumferentially evenly arranging 6.Wobble gear is made up of oscillating tooth matrix 3 and two needle bearings 4.The major diameter periphery section at oscillating tooth matrix 3 middle parts is meshed with double phase cam 2, and two needle bearings 4 are installed in oscillating tooth matrix 3 both sides minor diameter periphery sections respectively, and its periphery is meshed with internal gear 5.Oscillating tooth matrix 3 is installed on the axis pin of column 6 of movable teeth rack by the eccentric opening on it.The profile of double phase cam 2 is the elliptic curve of standard, and the profile of internal gear 5 is that wobble gear is made oscillating motion, while shock wave device and movable teeth rack are done uniform circular motion again by given speed ratio envelope around axis pin of column 6 under shock wave device drives.For avoiding oscillating tooth matrix 3 stage casing peripheries to contact with internal gear 5, the middle part of internal gear 5 teeth is processed with a circular groove 17, and the width of circular groove 17 is greater than the width of oscillating tooth matrix 3 middle part periphery sections; Simultaneously, interfere for avoiding the double phase cam 2 and the periphery of two needle bearings 4 of oscillating tooth, the width of double phase cam 2 is less than the width of oscillating tooth matrix 3 middle part major diameter periphery sections.The number of teeth z of oscillating tooth
hNumber of teeth z with internal gear
gBetween the pass be: z
g=z
h± 2.In this device, all adopt routine techniques to connect between all parts.
Process, assemble all parts by designing requirement.Wherein, needle bearing 4 adopts the clean cut system needle roller bearing without inner ring.The profile of final realization double phase cam 2 is the standard ellipse curve, and the profile of internal gear 5 is that oscillating tooth is made oscillating motion, while shock wave device and movable teeth rack are made the envelope of uniform circular motion again by given speed ratio this device around axis pin of column 6 under shock wave device drives.
Mode of execution two
Fig. 7 is another mode of execution of the present utility model.The structure and the working principle of this device are as described below: two isostructural double phase cams 2 interlace each other 90 ° and connect firmly the formation shock wave device with input shaft 1.Movable teeth rack is made of output disc 7, floating disc 8, separator disc 16, axis pin of column 6 and the axis pin of column sleeve 18 that is sleeved on the axis pin of column 6.Output disc 7, floating disc 8 and separator disc 16 are by being fixedly connected along axis pin of column 6 and the axis pin of column sleeve 18 circumferentially evenly arranged.Position between output disc 7, floating disc 8 and the separator disc 16 is guaranteed by axis pin of column sleeve 18.Two row structures and compositions and mode of execution one identical wobble gear is arranged on the both sides of separator disc 16.Two row oscillating tooths on the same axis pin of column are each other around the pin axis 180 ° of layouts that interlace.For the mounting type with two double phase cams adapts, two internal gears 5, the 90 ° of layouts that interlace each other.Other parts and Placement are all identical with mode of execution one.In this device, the working principle of being made up of double phase cam 2, wobble gear, movable teeth rack and internal gear 5 of respectively arranging Transmitted chains is identical with mode of execution one.Two row's Transmitted chainss are realized motion and the transmission of power between input shaft 1 and the output shaft 9 jointly.Compare with mode of execution one, present embodiment has higher bearing capacity and rigidity.
Mode of execution three
Fig. 8 is another mode of execution of the present utility model.Parts and the transmission principle of forming this device are identical with mode of execution two; The difference of the two is that the angular position of two double phase cams 2 in the mode of execution three is identical, and the angular position of two row's wobble gears is identical, and the angular position of two internal gears 5 is also identical.
Claims (7)
1. the swing movable gear driving device of a double phase cam shock wave includes shock wave device, wobble gear, movable teeth rack and internal gear; Oscillating tooth matrix (3) the suit needle bearing 4 that has eccentric opening constitutes wobble gear; The output disc (7), floating disc (8) and the two ends that connect firmly with output shaft (9) constitute movable teeth rack with the axis pin of column (6) that output disc (7) and floating disc (8) connect firmly respectively; Be set in the last also rotating wobble gear of axis pin of column (6) and be positioned between shock wave device and the internal gear (5), the stage casing periphery of oscillating tooth matrix (9) rolls with double phase cam (2) and contacts engagement, and needle bearing (4) rolls with internal gear (5) and contacts engagement; The two ends of input shaft (1) are supported on output disc (7) and the right end cap (12) by ball bearing (13), (11), the output shaft (9) that connects firmly with movable teeth rack is supported on the frame (15) by ball bearing (14), right end cap (12) is connected with the two ends of internal gear (5) respectively with frame (15), and this device is connected as a single entity; It is characterized in that: shock wave device is made up of input shaft 1 and double phase cam (2), and the profile of double phase cam (2) is the geometrical axis symmetrical curve of standard, and double phase cam (2) is fixed on input shaft (1) without acceptance of persons.
2. the swing movable gear driving device of a kind of double phase cam shock wave according to claim 1, it is characterized in that: the profile of double phase cam (2) is elliptic curve or two eccentric arc curve or two-phase class cycloid or two-phase cosine curve.
3. the swing movable gear driving device of a kind of double phase cam shock wave according to claim 1 and 2 is characterized in that: to be wobble gear at double phase cam (2) drive the profile of internal gear (5) that the axis pin of column (6) on movable teeth rack is down done oscillating motion, double phase cam (2) and movable teeth rack are made the envelope of uniform circular motion again by given speed ratio simultaneously.
4. the swing movable gear driving device of a kind of double phase cam shock wave according to claim 1 and 2 is characterized in that: be processed with a circular groove (17) in the middle part of the teeth of internal gear (5); The width of double phase cam (2) is less than the width of oscillating tooth matrix (3) middle part major diameter periphery section, and the width of circular groove (17) is greater than the width of oscillating tooth matrix (3) middle part major diameter periphery section.
5. the swing movable gear driving device of a kind of double phase cam shock wave according to claim 1 and 2 is characterized in that: the number of teeth z of wobble gear
hNumber of teeth z with internal gear (5)
gBetween the pass be z
g=z
h± 2.
6. the swing movable gear driving device of a kind of double phase cam shock wave according to claim 1 and 2 is characterized in that: the Transmitted chains that is made of shock wave device, wobble gear, movable teeth rack and internal gear (5) can be set to more than the row; When being many rows, the angular position of arranging double phase cam (2) identical more, and the angular position of arranging wobble gear identical more, and the angular position of arranging internal gear (5) also identical more; Between adjacent two row's Transmitted chainss separator disc (16) is housed.
7. the swing movable gear driving device of a kind of double phase cam shock wave according to claim 1 and 2, it is characterized in that: the Transmitted chains that is made of shock wave device, wobble gear, movable teeth rack and internal gear (5) is during for many rows, the angular position of adjacent two row's double phase cams (2) interlaces 90 ° each other, the angular position of adjacent two row's wobble gears interlaces 180 ° around the axis of axis pin of column (6) each other, and the angular position of adjacent two row's internal gears (5) interlaces 90 ° each other; Between adjacent two row's Transmitted chainss separator disc (16) is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420077535 CN2725627Y (en) | 2004-07-09 | 2004-07-09 | Oscillating adjustable gear driving device of biphase cam shock wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420077535 CN2725627Y (en) | 2004-07-09 | 2004-07-09 | Oscillating adjustable gear driving device of biphase cam shock wave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2725627Y true CN2725627Y (en) | 2005-09-14 |
Family
ID=35040346
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420077535 Expired - Fee Related CN2725627Y (en) | 2004-07-09 | 2004-07-09 | Oscillating adjustable gear driving device of biphase cam shock wave |
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| CN (1) | CN2725627Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926863A (en) * | 2012-10-29 | 2013-02-13 | 四川大学 | Internal-combustion engine with two-phase inner cam shock wave shifting for transmission |
| CN103410938A (en) * | 2013-08-21 | 2013-11-27 | 湖南恒至凿岩科技有限公司 | High-level variable elliptic swing movable tooth transmission device |
| CN103410923A (en) * | 2013-08-21 | 2013-11-27 | 湖南恒至凿岩科技有限公司 | Sleeve oscillating-teeth transmission device with high-order ellipse |
| CN103410929A (en) * | 2013-08-21 | 2013-11-27 | 湖南恒至凿岩科技有限公司 | End-surface oscillating teeth transmission device with high-order ellipse |
| CN103410942A (en) * | 2013-08-21 | 2013-11-27 | 湖南恒至凿岩科技有限公司 | Cosine shock wave swing movable teeth transmission device |
| CN103410925A (en) * | 2013-08-21 | 2013-11-27 | 湖南恒至凿岩科技有限公司 | Polyhedral swing movable tooth transmission device |
| CN103410922A (en) * | 2013-08-21 | 2013-11-27 | 湖南恒至凿岩科技有限公司 | Double-arc swinging oscillating-teeth transmission device |
| CN103410928A (en) * | 2013-08-21 | 2013-11-27 | 湖南恒至凿岩科技有限公司 | Planar-steel-ball oscillating teeth transmission device with high-order ellipse |
| CN105782394A (en) * | 2016-04-12 | 2016-07-20 | 燕山大学 | Rectangular axis steel ball speed reducer |
| CN115750741A (en) * | 2022-11-30 | 2023-03-07 | 重庆天作传动科技有限公司 | Vector cam speed reducer |
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2004
- 2004-07-09 CN CN 200420077535 patent/CN2725627Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926863A (en) * | 2012-10-29 | 2013-02-13 | 四川大学 | Internal-combustion engine with two-phase inner cam shock wave shifting for transmission |
| CN103410938A (en) * | 2013-08-21 | 2013-11-27 | 湖南恒至凿岩科技有限公司 | High-level variable elliptic swing movable tooth transmission device |
| CN103410923A (en) * | 2013-08-21 | 2013-11-27 | 湖南恒至凿岩科技有限公司 | Sleeve oscillating-teeth transmission device with high-order ellipse |
| CN103410929A (en) * | 2013-08-21 | 2013-11-27 | 湖南恒至凿岩科技有限公司 | End-surface oscillating teeth transmission device with high-order ellipse |
| CN103410942A (en) * | 2013-08-21 | 2013-11-27 | 湖南恒至凿岩科技有限公司 | Cosine shock wave swing movable teeth transmission device |
| CN103410925A (en) * | 2013-08-21 | 2013-11-27 | 湖南恒至凿岩科技有限公司 | Polyhedral swing movable tooth transmission device |
| CN103410922A (en) * | 2013-08-21 | 2013-11-27 | 湖南恒至凿岩科技有限公司 | Double-arc swinging oscillating-teeth transmission device |
| CN103410928A (en) * | 2013-08-21 | 2013-11-27 | 湖南恒至凿岩科技有限公司 | Planar-steel-ball oscillating teeth transmission device with high-order ellipse |
| CN103410938B (en) * | 2013-08-21 | 2016-08-10 | 湖南恒至凿岩科技股份有限公司 | High-order denatured ellipse swing movable gear driving device |
| CN105782394A (en) * | 2016-04-12 | 2016-07-20 | 燕山大学 | Rectangular axis steel ball speed reducer |
| CN105782394B (en) * | 2016-04-12 | 2018-02-09 | 燕山大学 | Rectangular axis steel ball reducer |
| CN115750741A (en) * | 2022-11-30 | 2023-03-07 | 重庆天作传动科技有限公司 | Vector cam speed reducer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050914 Termination date: 20110709 |