CN202746501U - Transmission structure for harmonic wave transmission device - Google Patents
Transmission structure for harmonic wave transmission device Download PDFInfo
- Publication number
- CN202746501U CN202746501U CN 201220387605 CN201220387605U CN202746501U CN 202746501 U CN202746501 U CN 202746501U CN 201220387605 CN201220387605 CN 201220387605 CN 201220387605 U CN201220387605 U CN 201220387605U CN 202746501 U CN202746501 U CN 202746501U
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- flexible gear
- cam
- cup
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Abstract
The utility model discloses a transmission structure for a harmonic wave transmission device. The transmission structure for the harmonic wave transmission device comprises a round internal tooth spline, a flexible gear and a cam, wherein the flexible gear is arranged in the internal tooth spline; the cam is used for enabling the flexible gear to be deformed so as to be mutually meshed with the internal tooth spline; the flexible gear is a cup-shaped structure body; the side wall of the cup is provided with a plurality of cutting slots which surround by sections; the cam is elliptic; and the cam is sheathed with a bearing and is arranged in the cup mouth of the flexible gear. According to the transmission structure for the harmonic wave transmission device, which is disclosed by the utility model, the flexible gear can be expanded and deformed by the action of the cam and the cutting slots, so that the flexible gear and the internal tooth spline can be better matched and mutually meshed, and a purpose on improving the transferring power and increasing the torque is achieved.
Description
Technical field
The utility model relates to drive mechanism, relates in particular to a kind of drive mechanism of harmonic drive, is specifically related to be used in the flexible deformation structure of the flexible gear in this transmission device.
Background technique
Consult the deceleration principle of the harmonic drive (harmonic drive transmission) that U. S. Patent discloses for No. 2906143, thoroughly be located in the cup-shaped flexible gear 10 (as shown in Figure 7) by an oval-shaped cam set, when cam turns round, cam wheel face major axis to two ends can be with flexible gear 10 in to support, make flexible gear 10 and the internal spline of a Circular Rigid of mate setting produce an engagement, by poor in the designed number of teeth of flexible gear 10 and internal spline, produce a gearing down effect.
But this kind harmonic drive is when running, this flexible gear 10 is under the effect that cam supports, its rim of a cup rim can present warpage and tiltedly open state (as shown in Figure 7), this state reduces for the interlock transmission area of the effective engaging tooth of flexible gear rim of a cup outer rim, it is not good to cause the transferring power that makes harmonic drive, and the transfer moment of torsion reduces.
Because the uncomfortable situation that the flexible gear of above-mentioned harmonic drive may run into, the utility model people feels deeply still the space that overcomes improvement.
Summary of the invention
In view of this, main purpose of the present utility model is to provide a kind of drive mechanism of harmonic drive, phase makes the flexible deformation transmission behavior of this flexible gear when transmission operates, can have more transmission efficiency, and structure characteristic sees through the utility model design and the fatigue tolerance intensity of more favourable flexible gear.The drive mechanism of this harmonic drive can overcome the problem that existing cup-shaped flexible gear warpage is tiltedly opened, and makes flexible gear have better engagement driving effect, makes the transfer moment of torsion of promoting harmonic drive.
For achieving the above object, the technical solution of the utility model is achieved in that
A kind of drive mechanism of harmonic drive, the internal spline that comprises a circle, one is arranged at the flexible gear in this internal spline, and one be used for making the distortion of this flexible gear and with the intermeshing cam of this internal spline, wherein: this flexible gear is the cup-like structure body, its cup sidewall be provided with the multiple tracks grading ring around profile groove; Respectively the two ends of this profile groove and adjacent another profile groove form interlaced overlapping shape.
Wherein, this cam oval in shape.
Wherein, the cup end of this flexible gear, offer a plurality of joining holes.
Wherein, the outer race of this cam is provided with a bearing, and this bearing is resisted against the inwall of this flexible gear.
Wherein, this bearing is flexible ball bearing.
The drive mechanism of harmonic drive provided by the utility model has the following advantages:
This model utility forms by above-mentioned member, the utility model see through this flexible gear in the formed grading ring of wall of cup around the profile groove structure, make flexible gear more be subject to supporting of cam and deformation, and then make the intermeshing profile of tooth of flexible gear and internal spline more identical, cause transferring power lifting, the moment of torsion of harmonic drive to increase.
Description of drawings
Figure 1 shows that perspective exploded view of the present utility model.
Figure 2 shows that another perspective exploded view of the present utility model.(cam arrangement is in the state of flexible gear)
Figure 3 shows that stereoscopic schematic representation of the present utility model.
Figure 4 shows that the utility model combination generalized section.
Figure 5 shows that plane combination schematic representation of the present utility model.
Figure 6 shows that the three-dimensional generalized section of this flexible gear in the utility model.
Figure 7 shows that the perspective exploded view of existing harmonic drive.
[primary clustering symbol description]
1 internal spline
11 receiving holes
12 key teeth
2 flexible gears
21 profile grooves, 22 joining holes
23 gear teeth
3 cams
31 flexible ball bearings.
Embodiment
Below in conjunction with accompanying drawing and embodiment of the present utility model a drive mechanism of novel harmonic drive is described in further detail.
As shown in Figures 1 to 4, the drive mechanism of the utility model harmonic drive, the internal spline 1 that comprises a circle (annular), one is arranged at the flexible gear 2 in the internal spline 1, an and oval-shaped cam 3 that is arranged in the flexible gear 2, wherein: the rigid crust cover structure body that this internal spline 1 is a circle (annular), have the receiving hole 11 of an accommodating flexible gear 2 in housing central authorities, receiving hole 11 periphery inside are formed with key tooth 12.This flexible gear 2 is a cup-like structure body, in the cup sidewall be provided with several grading ring around profile groove 21, the two ends of each profile groove 21 and adjacent another profile groove 21 form interlaced overlapping shape (such as Fig. 4 and shown in Figure 6), and the cup bottom offers a plurality of joining holes 22, the rim of a cup outer rim side then be formed with can with the gear teeth 23 of this key tooth 12 moduluses coupling.And this cam 3 is used for being coupling power and turns round, and its outer race is provided with a flexible ball bearing 31, makes flexible ball bearing 31 be resisted against the inwall of this flexible gear 2.
Utilize above-mentioned member to form, these cam 3 wheel face major axis of the utility model to two ends, can be with flexible gear 2 in to support, make flexible gear 2 and the internal spline 1 that mates both, cam 3 wheel face major axis to two ends produce a meshing zone A (as shown in Figure 5), and poor by the designed number of teeth of flexible gear 2 and internal spline 1, flexible gear 2 is slowly revolved with the poor side-play amount of its tooth in internal spline 1 move fine motion, therefore when cam 3 continues to rotate, can make flexible gear 2 produce the deceleration rotating effect, and then the effect that produces a gearing down.
Moreover, the profile groove 21 that the utility model flexible gear 2 is offered, can make the cup sidewall of flexible gear 2 bear easily the supporting effect of cam 3 and produce resiliently deformable, the gear teeth 23 parts of flexible gear 2 rims of a cup particularly, can't warpage occur because of the rolling of cam 3 tiltedly open state, so can overcome the problem that existing cup-shaped flexible gear warpage is tiltedly opened, make the gear teeth 23 keep the parallelism (see also as shown in Figure 6) identical with key tooth 12, can increase engagement or the Continuous Contact intensity of the gear teeth 23 and key tooth 12.
In addition, also because of the above-mentioned gear teeth 23 in so parallelism performance of meshing zone A, this flexible gear 2 can strengthen design with the tooth width of cloth length of the gear teeth 23, can promote better larger engagement or Continuous Contact intensity in order to striving at meshing zone A, and the transfer moment of torsion is strengthened.
The profile groove 21 of this flexible gear 2 of the utility model is except can adopting as shown interlaced overlapping shape; its symmetric mode that also is able to the multi-region segmentation is implemented; these Application Examples; only set forth the utility model but not limited for convenient; in not breaking away from the utility model spirit category, being familiar with various simple and easy change and modification that industry technician can do, all must include in protection domain of the present utility model.
In sum, the drive mechanism of the utility model harmonic drive really makes flexible gear lower assisting of each profile groove, and has increased better flexible deformation effect, and reaching expection increases transferring power and the situation of transferring moment of torsion.
The above is preferred embodiment of the present utility model only, is not to limit protection domain of the present utility model.
Claims (5)
1. the drive mechanism of a harmonic drive, it is characterized in that, the internal spline that comprises a circle, one is arranged at the flexible gear in this internal spline, and one be used for making the distortion of this flexible gear and with the intermeshing cam of this internal spline, wherein: this flexible gear is the cup-like structure body, its cup sidewall be provided with several grading ring around profile groove; Respectively the two ends of this profile groove and adjacent another profile groove form interlaced overlapping shape.
2. the drive mechanism of harmonic drive as claimed in claim 1 is characterized in that wherein, this cam is oval in shape.
3. the drive mechanism of harmonic drive as claimed in claim 1 is characterized in that, wherein, the cup end of this flexible gear offers a plurality of joining holes.
4. the drive mechanism of harmonic drive as claimed in claim 1 or 2 is characterized in that wherein, the outer race of this cam is provided with a bearing, and this bearing is resisted against the inwall of this flexible gear.
5. the drive mechanism of harmonic drive as claimed in claim 4 is characterized in that wherein, this bearing is flexible ball bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220387605 CN202746501U (en) | 2012-08-07 | 2012-08-07 | Transmission structure for harmonic wave transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220387605 CN202746501U (en) | 2012-08-07 | 2012-08-07 | Transmission structure for harmonic wave transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202746501U true CN202746501U (en) | 2013-02-20 |
Family
ID=47705900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220387605 Expired - Fee Related CN202746501U (en) | 2012-08-07 | 2012-08-07 | Transmission structure for harmonic wave transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202746501U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832603A (en) * | 2014-02-12 | 2015-08-12 | 上银科技股份有限公司 | Hollow speed reducer |
| CN106321792A (en) * | 2015-06-26 | 2017-01-11 | 上银科技股份有限公司 | Lubrication type harmonic drive |
| CN108027020A (en) * | 2015-09-17 | 2018-05-11 | 谐波传动系统有限公司 | The wavegenerator of Wave gear device |
| CN109505944A (en) * | 2017-09-15 | 2019-03-22 | 日本电产株式会社 | Speed changer and actuator |
| CN109538729A (en) * | 2017-09-22 | 2019-03-29 | 陈鹏任 | Roll cleaning harmonic speed reduction machine |
| CN111102340A (en) * | 2018-10-29 | 2020-05-05 | 新普科技股份有限公司 | Harmonic gear speed reducer |
-
2012
- 2012-08-07 CN CN 201220387605 patent/CN202746501U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832603A (en) * | 2014-02-12 | 2015-08-12 | 上银科技股份有限公司 | Hollow speed reducer |
| CN106321792A (en) * | 2015-06-26 | 2017-01-11 | 上银科技股份有限公司 | Lubrication type harmonic drive |
| CN108027020A (en) * | 2015-09-17 | 2018-05-11 | 谐波传动系统有限公司 | The wavegenerator of Wave gear device |
| TWI698598B (en) * | 2015-09-17 | 2020-07-11 | 日商和諧驅動系統股份有限公司 | Wave generator of strain wave gearing |
| CN109505944A (en) * | 2017-09-15 | 2019-03-22 | 日本电产株式会社 | Speed changer and actuator |
| CN109538729A (en) * | 2017-09-22 | 2019-03-29 | 陈鹏任 | Roll cleaning harmonic speed reduction machine |
| CN111102340A (en) * | 2018-10-29 | 2020-05-05 | 新普科技股份有限公司 | Harmonic gear speed reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20200807 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |