CN102345726A - Centring - Google Patents
Centring Download PDFInfo
- Publication number
- CN102345726A CN102345726A CN2011102132247A CN201110213224A CN102345726A CN 102345726 A CN102345726 A CN 102345726A CN 2011102132247 A CN2011102132247 A CN 2011102132247A CN 201110213224 A CN201110213224 A CN 201110213224A CN 102345726 A CN102345726 A CN 102345726A
- Authority
- CN
- China
- Prior art keywords
- supporting surface
- planetary gear
- gear mechanism
- planet carrier
- sun gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H57/082—Planet carriers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention relates to the centring of an epicyclic gear transmission mechanism, particularly relating to an epicyclic gear transmission mechanism having a sun gear and a planet carrier. The sun gear has a bearing surface, which is disposed to share one center with the rotary axis and cooperates with the butt joint bearing surface of the planet carrier which is arranged to be concentric with the rotary axis. The invention also relates to a sun gear and a planet carrier applied to the epicyclic gear transmission of the invention. Further provided is a servo driver having the epicyclic gear transmission of the invention.
Description
Technical field
The present invention relates to the planetary gear mechanism with sun gear and planet carrier, sun gear and the planet carrier rotation axis that can rotate respectively is supported rotationally.
Background technique
In order to adjust member, the for example hatchcover of vehicle, sliding top skylight and especially height and the inclination in order to adjust seat need servo driver usually, and said servo driver has higher reduction speed ratio and transfer larger torque.Usually use planetary gear mechanism for this reason, wherein, a plurality of gear stages successively are set usually.
Seal these servo drivers distolateral with bearing cap.In order to support dirivig member, especially last gear stage is furnished with bearing components usually on bearing cap.The bearing cap that is used for planetary gear mechanism by prior art has been shown among Fig. 1.
Each planet wheel 5 can both be around supporting rotationally with the rotation axis 11 eccentric planet axis 55 that are provided with.For this reason, planet wheel 5 is arranged on the pin 52 with its planet axis 55 arranged concentric, and said pin is arranged on the planet carrier 3.Planet carrier 3 can support around rotation axis 11 rotationally.
In bearing cap 4, be provided with the clutch shaft bearing 41 and second bearing 42.Clutch shaft bearing 41 is configured for supporting the first supporting surface L41 of planet carrier 3, and second bearing 42 is configured for supporting the second supporting surface L42 of planet carrier 3.Be furnished with the clutch shaft bearing interface L31 with the first supporting surface L41 mating reaction of bearing cap 4 on the planet carrier 3, and be furnished with the second bearing interface L32 with the second supporting surface L42 mating reaction of bearing cap 4.
Therefore, illustrate here by the servo driver of prior art in order to support planet carrier 3, except that bearing cap 4, also stipulated the clutch shaft bearing 41 and second bearing 42.First and second bearings 41,42 as bearing sleeve, are connected with bearing cap 4 through press fit at this as independent member.
When driving sun gear 2, the external tooth 51 of planet wheel 5 respectively with external tooth 21 engagements of sun gear 2, so planet wheel 5 rolls on the internal tooth 61 of gear ring 6.Planet carrier 3 rotates around rotation axis 11 thus; Wherein, The clutch shaft bearing interface L31 of planet carrier 3 guides along the first supporting surface L41 of bearing cap 4 thereon, and wherein, the second bearing interface L32 of planet carrier 3 guides along the second supporting surface L42 of bearing cap 4 thereon.
Sun gear 2 relatively with the centering of the planet wheel 5 of sun gear 2 engagements indirectly through being arranged in the centering device 8 in the bearing cap 4, be bearing pin at this, carry out, bearing cap 4 is felt relieved by this device of feeling relieved on housing 7 with gear ring 6.In addition, on bearing cap 4, be provided with pilot hole 9, bearing cap 4 is tightened on the housing 7 by this pilot hole with gear ring 6.
Summary of the invention
Technical problem to be solved by this invention is; A kind of planetary gear mechanism that is particularly useful for servo driver is optimized in supporting and centering to planetary gear mechanism; Make the performance that the tolerance that causes is improved planetary gear mechanism through dwindling especially, and reduce the cost that is used for this planetary gear mechanism.
This technical problem solves through a kind of planetary gear mechanism with sun gear and planet carrier, and wherein, sun gear has the supporting surface that is provided with concentric, this supporting surface and planet carrier with the concentric setting dock the supporting surface mating reaction.
Because according to the present invention, sun gear have be used to support planet carrier, with the supporting surface that docks the supporting surface mating reaction of planet carrier, be arranged on the bearing interface on the planet carrier usually so cancelled one of them.Therefore also cancelled simultaneously the supporting surface that is arranged in the bearing cap.Therefore, be located at the bearing in the bearing cap relatively, for example be pressed into the bearing sleeve of bearing cap relatively, all decrease by the component costs and the installation cost of planetary gear mechanism of the present invention.
In addition, for bearing cap can be cancelled the bearing pin that is arranged on the bearing cap in the centering on the housing, or bearing pin only is used to absorb driving torque in by planetary gear mechanism of the present invention.Because compare by centering of the present invention; This class bearing pin through be arranged on the sun gear supporting surface and rotation axis at interval very far away; So bearing pin requires very accurately to be seated on the housing; Thereby can be with minimum tolerance; Especially minimum spacing tolerance, concentricity tolerance and diameter tolerance; Be manufactured on the sun gear by centering device of the present invention, and cause obvious less clearance.
Can be used in all enforcement modification of planetary gear mechanism by bearing structure of the present invention; That is to say; A kind of gear ring that can be used for planetary gear mechanism is motionless, sun gear or the driven form of implementation of planet carrier; A kind of sun gear that also can be used for planetary gear mechanism is motionless, gear ring or the driven form of implementation of planet carrier, and be used for that a kind of planet carrier of planetary gear mechanism is different, gear ring or the driven form of implementation of sun gear.
Supporting surface is preferably made integratedly with sun gear and/or is docked supporting surface and planet carrier is made integratedly.Making supporting surface integratedly with sun gear and/or make integratedly when dock supporting surface and planet carrier, in manufacture process, considered the tolerance that function is correlated with already.In addition, compare,, can tolerance chain not occur because of the tolerance of installation and consider based on the integral type manufacturing with multicompartment formula bearing.As alternative, equally preferably, supporting surface is made up of the supporting surface that is pressed on the sun gear and/or docks supporting surface and is made up of the butt joint supporting surface that is pressed on the planet carrier.
On sun gear, preferably establish pin, its outer peripheral surface of arranging around concentric constitutes supporting surface.In addition, preferably on planet carrier, establish the hole, the inner peripheral surface of arranging around concentric in hole constitutes the butt joint supporting surface.Hole in pin on the sun gear and the planet carrier can be made with traditional device with being dirt cheap.In addition, no matter be pin or hole, can both be on manufacturing technology by very accurately centering.At last, the diameter in the diameter of pin and hole is all much smaller than the supporting surface that the bearing structure that is generally planet carrier is provided with.Based on the bearing diameter that reduces, diameter tolerance is littler, and the performance of bearing structure is better.
In addition, planet carrier and thereby the planetary pinion gear stage, by on sun gear, being felt relieved.Therefore, in the gear stage that a plurality of front and back are arranged in order, each carries out at the gear stage that is arranged in their upper reaches by the centering of planetary pinion gear stage of the present invention all the time.Each is designed to the gear stage by planetary gear mechanism of the present invention, and the centering after the improvement improves tolerance, gap smaller.
When sun gear centered on pivot axis, supporting surface preferably slided along the butt joint supporting surface of planet carrier.
In a kind of preferred form of implementation, supporting surface and butt joint supporting surface are provided for absorbing radial force.In this form of implementation, can make supporting surface and butt joint supporting surface with very narrow concentricity tolerance, so planetary gear mechanism also has good performance in radial displacement, do not need finishing in addition.Therefore, have additional bearing components in installation, for example in traditional planetary gear mechanism of Fu Jia taper ball bearing, the stack of part tolerance has also realized the improvement of quality relatively.
On sun gear, preferably establish external tooth with root diameter.In addition, supporting surface preferably has the same with root diameter big or than its little bearing diameter.Therefore, sun gear directly is bearing in the planet carrier with its pin, and this makes the supporting of sun gear improve and the cooperation of the relative planet carrier of sun gear and centering are made moderate progress.
In addition, preferably on planet carrier, arrange at least one planet wheel, said planet wheel supports around the planet axis with the rotation axis arranged off-centre rotationally, wherein, and the external tooth of sun gear and the engagement of the external tooth of planet wheel.Therefore, sun gear is with the better fit and the centering of its pin direct supporting on planet carrier having facilitated equally relative planet wheel of sun gear.Therefore, the axial spacing tolerance of sun gear and planet wheel obviously diminishes, the operation noise that this is beneficial to the solidness of driving mechanism and has reduced planetary gear mechanism.
Planetary gear mechanism is a kind of planetary gear mechanism of one-sided supporting preferably.But a kind of form of implementation of planetary gear mechanism of bilateral supporting also is preferred.
In addition, this technical problem solved by the planet carrier of planetary gear mechanism of the present invention through a kind of being used for.In addition, this technical problem also solves by the sun gear of planetary gear mechanism of the present invention through a kind of being used for.Sun gear and/or planet carrier can be with very narrow tolerance manufacturings.They do not need finishing, and bearing performance is very good with regard to the slight displacement that on supporting surface and butt joint supporting surface, occurs.
Sun gear and/or planet carrier preferably are sintered, so they can be made by manufacture process with low cost integratedly.In addition, the material of sun gear and/or planet carrier preferably has good bearing characteristics.Equally preferably; At least one supporting surface and/or butt joint supporting surface; Particularly preferably be sun gear and/or planet carrier, lubricated dose soaks into, thereby the friction that occurs on the supporting surface in supporting surface and butt joint is alleviated and/or oiling agent constitutes a kind of anti-corrosion protection.
In addition, this technical problem also solves through a kind of band servo driver by planetary gear mechanism of the present invention, especially hatchcover driver.Compare traditional servo driver, the manufacturing of this servo driver, storage and installation are all more with low cost and simple.
Description of drawings
Next by description of drawings the present invention.Accompanying drawing only is exemplary, does not limit general invention thought.
Fig. 1 shows the planetary gear mechanism by prior art, or rather,
Fig. 1 b has been shown at Fig. 1 in a)) the cross section A-A of planetary gear mechanism, at Fig. 1 b) in then show plan view; And
Fig. 2 shows by planetary gear mechanism of the present invention, or rather,
Fig. 2 b has been shown at Fig. 2 in a)) the cross section A-A of planetary gear mechanism, at Fig. 2 b) in then show plan view.
Embodiment
Fig. 1 and Fig. 2 show the enforcement modification with the planetary gear mechanism 1 of driven sun gear 2 and fixed gear ring 6.But the present invention is not limited to these and implements modification; But can be applied to planetary gear mechanism 1 all implement modification, that is also can be applied to the enforcement modification of driven planet carrier 3 and fixed gear ring 6 and with the enforcement modification of fixed sun gear 2 and fixed planet carrier 3.
Fig. 1 shows the aforementioned planetary gear mechanism 1 by prior art, Fig. 1 b has been shown at Fig. 1 in a) or rather) the cross section A-A of planetary gear mechanism, at Fig. 1 b) in plan view has been shown.
In the planetary gear mechanism shown in this 1; Be arranged in the clutch shaft bearing 42 on the bearing cap 4 and be arranged in second bearing 42 on the bearing cap 4; Be disposed on that side of planet wheel 5; Said clutch shaft bearing 41 is configured for supporting the first supporting surface L41 of planet carrier 3, and said second bearing 42 is configured for supporting the second supporting surface L42 of planet carrier 3.Therefore this planetary gear mechanism 1 planetary gear mechanism 1 that is a kind of one-sided supporting.
Fig. 2 shows by planetary gear mechanism of the present invention, or rather, Fig. 2 b has been shown at Fig. 2 in a)) the cross section A-A of planetary gear mechanism, at Fig. 2 b) in then show plan view.
Be servo driver by planetary gear mechanism 1 of the present invention shown in this, last gear stage of the driving mechanism that comprises a plurality of gear stage (not shown) of vehicle hatchcover driver or rather.At this, other gear stage of this hatchcover driver no longer includes necessity and is designed to planetary gear mechanism 1.In addition; In the servo driver that has by planetary gear mechanism 1 of the present invention; Last gear stage does not force to be designed to planetary gear mechanism 1 yet; And more such forms of implementation of servo driver also are preferred; In these forms of implementation, at least one gear stage that is arranged in before last gear stage is designed to by planetary gear mechanism 1 of the present invention.
The present invention is not limited to the planetary gear mechanism 1 of one-sided supporting; But also can be applied to the planetary gear mechanism 1 that bilateral supports; In the planetary gear mechanism of bilateral supporting, planet wheel 5 is arranged between the clutch shaft bearing interface L31 and the second bearing interface L32 '.
Comprise the planet carrier 3 that the rotation axis 11 that can rotate is rotated by planetary gear mechanism 1 of the present invention.At this, four supporting bolts 52 for example are set on planet carrier 3, each planet wheel 5 can be arranged on these four the supporting bolts rotationally.Planetary gear mechanism 1 also comprises sun gear 2, and sun gear 2 is arranged to rotation axis 11 coaxial, and is bearing in the housing 7, and when the motor (not shown) drives, rotates.Sun gear 2 has the external tooth 21 with 51 engagements of the external tooth of planet wheel 5.When sun gear 2 rotated, the external tooth 51 of planet wheel 5 rolled on the internal tooth 61 of gear ring 6.At this, planet carrier 3 rotates around rotation axis 11.
Planet carrier 3 has the clutch shaft bearing interface L31 on the first supporting surface L41 that is supported on clutch shaft bearing 41.Clutch shaft bearing 41 is pressed into bearing cap 4 as bearing sleeve.But also preferably a kind of like this form of implementation, in this form of implementation, clutch shaft bearing 41 is made with bearing cap 4 integratedly.In addition, planet carrier 3 also has the butt joint supporting surface L32 ' on the supporting surface L22 that is supported on sun gear 2.
The supporting surface L22 of sun gear 2 is outer peripheral surfaces of the bearing that is designed to pin 22 of sun gear 2, and said bearing and sun gear 2 are made integratedly.As alternative, a kind of like this form of implementation also is preferred, and in this form of implementation, supporting surface L22 is made up of the outer peripheral surface that is fitted in the sleeve on the pin or is pressed into the supporting bolt of sun gear.Hereinafter, to sun gear 2, the notion synonym of bearing 22 and pin.
Butt joint supporting surface L32 ' is the inner peripheral surface of butt joint bearing 32 ' of the design pore-forming of planet carrier 3, and same and planet carrier 3 designs integratedly.Hereinafter, the notion synonym in butt joint bearing 32 ' and hole.
Supporting surface L22 and butt joint supporting surface L32 ' are provided for absorbing power radially.
For bearing cap 4 and gear ring 6 are fixed on the housing 7, bearing cap 4 has one or more pilot holes 9.In addition, the bearing pin 8 that is arranged on the bearing cap 4 as centering device 8 is visible at this moment at first, but this bearing pin only is provided for absorbing moment of torsion at this, and has prevented the relative movement between bearing cap 4 and the gear ring 6.But what be substituted in that this is arranged on bearing pin 8 on the bearing cap 4 is that a kind of form of implementation of bearing cap 4 is particularly preferred, in this form of implementation, prevents the relative movement between bearing cap and the gear ring 6 through form fit part (not shown).
The bearing that is designed to pin 22 of sun gear 2 replaces second bearing 42 that is located on the bearing cap 4 in traditional planetary gear mechanism 1 shown in Figure 1.Therefore the degree that is pressed into by the bearing cap 4 of planetary gear mechanism 1 of the present invention of bearing sleeve must be lighter, thereby the number of components by planetary gear mechanism 1 of the present invention is reduced for this bearing sleeve at least.
In addition, forming the pin 22 of supporting surface L22 and form the hole 32 of butt joint supporting surface L32 ' can be by very accurately centering, has very little diameter and can make integratedly with prior manufacturing method and sun gear 2 or planet carrier 3.In manufacture process, just considered the relevant tolerance of function thus already, they need not be repaired and sun gear 2 improved with cooperating of planet wheel 5.
Generally speaking, have higher quality by planetary gear mechanism 1 of the present invention and the operation noise that causes less.
Claims (11)
1. planetary gear mechanism (1); Have sun gear (2) and planet carrier (3); It is characterized in that sun gear (2) has and concentric that be provided with and the planet carrier (3) of rotation axis (11) and the supporting surface (L22) that docks supporting surface (L32 ') the mating reaction concentric setting of rotation axis (11).
2. by the described planetary gear mechanism of claim 1 (1); It is characterized in that; Supporting surface (L22) and sun gear (2) are made integratedly and/or are docked supporting surface (L32 ') and make integratedly with planet carrier (3), and perhaps supporting surface (L22) is constituted and/or docked supporting surface (L32 ') by the supporting surface that is pressed on the sun gear (2) and is made up of the butt joint supporting surface that is pressed on the planet carrier (3).
3. by one of aforementioned claim described planetary gear mechanism (1), it is characterized in that sun gear (2) is provided with pin (22), the outer peripheral surface around rotation axis (11) arranged concentric of this pin constitutes supporting surface (L22).
4. by one of aforementioned right described planetary gear mechanism (1), it is characterized in that, on planet carrier (3), be provided with hole (32 '), the inner peripheral surface formation butt joint supporting surface around rotation axis (11) arranged concentric in this hole (L32 ').
5. by one of aforementioned right described planetary gear mechanism (1), it is characterized in that supporting surface (L22) and butt joint supporting surface (L32 ') are set for the absorption radial force.
6. by one of aforementioned right described planetary gear mechanism (1), it is characterized in that, on sun gear (2), be provided with the have root diameter external tooth (21) of (d1).
7. by one of aforementioned right described planetary gear mechanism (1), it is characterized in that supporting surface (L22) has the same big or littler than root diameter (d1) bearing diameter (d2) with root diameter (d1).
8. by one of aforementioned right described planetary gear mechanism (1); It is characterized in that; Go up layout at least one planet wheel (5) at planet carrier (3); This at least one planet wheel can be around supported rotationally with the planet axis (55) of rotation axis (11) arranged off-centre, and wherein the external tooth (21) of sun gear (2) meshes with the external tooth (51) of planet wheel (5).
9. be used for planet carrier (3) by the described planetary gear mechanism of one of aforementioned claim (1).
10. be used for sun gear (2) by the described planetary gear mechanism of one of aforementioned claim (1).
11. have servo driver, especially the hatchcover driver by the described planetary gear mechanism of one of claim 1 to 6 (1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010038597.2 | 2010-07-29 | ||
| DE201010038597 DE102010038597A1 (en) | 2010-07-29 | 2010-07-29 | Planetary gear for use in adjustment drive i.e. tailgate drive in vehicle, has bearing surface cooperating with counter-bearing surface of planetary carrier, where counter-bearing surface is provided concentric to rotation axis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102345726A true CN102345726A (en) | 2012-02-08 |
Family
ID=45471118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102132247A Pending CN102345726A (en) | 2010-07-29 | 2011-07-28 | Centring |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN102345726A (en) |
| DE (1) | DE102010038597A1 (en) |
| FR (1) | FR2963398B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373517B (en) * | 2014-10-22 | 2016-08-31 | 北京航空航天大学 | A kind of box-like equal support method of eccentric shaft-connection rod set and reductor thereof |
| CN108058786A (en) * | 2017-12-18 | 2018-05-22 | 无锡海核装备科技有限公司 | It is a kind of can fast opening and closing hatch board |
| CN108312910A (en) * | 2017-01-17 | 2018-07-24 | 广东肇庆爱龙威机电有限公司 | Transmission device for adjusting seat back angle and the vehicle including transmission device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322130A (en) * | 2012-03-19 | 2013-09-25 | 昆山金星传动科技有限公司 | Improved X-shaped standard planetary reducer structure |
| DE102014208227B3 (en) * | 2014-04-30 | 2015-06-11 | Robert Bosch Gmbh | Transmission component with a receptacle for supporting a component |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1073535A (en) * | 1964-10-21 | 1967-06-28 | Inst Fordertechnik Leipzig | Epicyclic gearing |
| FR2566868A1 (en) * | 1984-06-29 | 1986-01-03 | Paris & Du Rhone | Epicyclic reduction gear for IC engine starter motor |
| US6099432A (en) * | 1997-09-09 | 2000-08-08 | Harmonic Drive Systems Inc. | Planetary gear device having a backlash adjusting mechanism |
| US20090069145A1 (en) * | 2007-09-12 | 2009-03-12 | Sheng Bor Wang | Planet gear speed reducer |
-
2010
- 2010-07-29 DE DE201010038597 patent/DE102010038597A1/en not_active Withdrawn
-
2011
- 2011-07-27 FR FR1156868A patent/FR2963398B1/en not_active Expired - Fee Related
- 2011-07-28 CN CN2011102132247A patent/CN102345726A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1073535A (en) * | 1964-10-21 | 1967-06-28 | Inst Fordertechnik Leipzig | Epicyclic gearing |
| FR2566868A1 (en) * | 1984-06-29 | 1986-01-03 | Paris & Du Rhone | Epicyclic reduction gear for IC engine starter motor |
| US6099432A (en) * | 1997-09-09 | 2000-08-08 | Harmonic Drive Systems Inc. | Planetary gear device having a backlash adjusting mechanism |
| US20090069145A1 (en) * | 2007-09-12 | 2009-03-12 | Sheng Bor Wang | Planet gear speed reducer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373517B (en) * | 2014-10-22 | 2016-08-31 | 北京航空航天大学 | A kind of box-like equal support method of eccentric shaft-connection rod set and reductor thereof |
| CN108312910A (en) * | 2017-01-17 | 2018-07-24 | 广东肇庆爱龙威机电有限公司 | Transmission device for adjusting seat back angle and the vehicle including transmission device |
| CN108058786A (en) * | 2017-12-18 | 2018-05-22 | 无锡海核装备科技有限公司 | It is a kind of can fast opening and closing hatch board |
| CN108058786B (en) * | 2017-12-18 | 2023-12-19 | 无锡海核装备科技有限公司 | Hatch cover capable of quick opening and closing |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2963398A1 (en) | 2012-02-03 |
| DE102010038597A1 (en) | 2012-02-02 |
| FR2963398B1 (en) | 2016-11-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120208 |