CN109996974A - Eccentric oscillation gear device - Google Patents
Eccentric oscillation gear device Download PDFInfo
- Publication number
- CN109996974A CN109996974A CN201780060291.5A CN201780060291A CN109996974A CN 109996974 A CN109996974 A CN 109996974A CN 201780060291 A CN201780060291 A CN 201780060291A CN 109996974 A CN109996974 A CN 109996974A
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- China
- Prior art keywords
- gear
- external gear
- eccentric
- internal
- wheel carrier
- Prior art date
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/44—Needle bearings
- F16C19/46—Needle bearings with one row or needles
- F16C19/466—Needle bearings with one row or needles comprising needle rollers and an outer ring, i.e. subunit without inner ring
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/581—Raceways; Race rings integral with other parts, e.g. with housings or machine elements such as shafts or gear wheels
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- 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
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2361/00—Apparatus or articles in engineering in general
- F16C2361/65—Gear shifting, change speed gear, gear box
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The present invention provides a kind of eccentric oscillation gear device (G1), it has internal gear (10), external gear (20), the eccentric body (30) for swinging the external gear, the eccentric body bearing (40) being configured between the eccentric body and external gear, multiple domestic (60) of wheel carrier are transferred to the wheel carrier (50) of the rotation ingredient synchronous rotary of external gear and by the rotation ingredient of external gear, wherein, external gear has for the eccentric shaft bearing bore (21) of eccentric body Bearing configuration and for domestic insertion and circumferentially across spaced multiple inner pinholes (22), when from end on observation, eccentric shaft bearing bore is Chong Die with inner pinhole.
Description
Technical field
The present invention relates to a kind of eccentric oscillation gear devices.
Background technique
A kind of eccentric oscillation gear device (cycloidal reducer) is disclosed in patent document 1, have internal gear and with
The external gear of the internal gear internal messing.The geared system be also equipped with makes external gear swing eccentric body, be configured at the eccentric body with
Eccentric body bearing between external gear is passed with the wheel carrier of the rotation ingredient synchronous rotary of external gear and by the rotation ingredient of external gear
It is handed to the multiple domestic of wheel carrier.
External gear have for eccentric body Bearing configuration eccentric shaft bearing bore and for it is domestic insertion and circumferentially across
Every multiple inner pinholes of setting.Multiple inner pinholes eccentric shaft bearing bore radial outside axially through external gear, by inserting
Enter the domestic of the inner pinhole and the rotation ingredient of external gear is transferred to wheel carrier.When therefore, from radial, eccentric shaft bearing bore
Chong Die with inner pinhole, when from end on observation, eccentric shaft bearing bore and inner pinhole are simultaneously underlapped.
Conventional art document
Patent document
Patent document 1: Japanese Unexamined Patent Publication 62-020240 bulletin
Summary of the invention
The invention technical task to be solved
Since biggish reduction ratio can be obtained by a retarding stage in this geared system, thus it is frequently used for strong
It is required that miniaturization, light-weighted purposes, therefore further miniaturization is required always.
The present invention is completed to cope with this requirement, and project is to provide one kind, and to can be realized geared system whole
Body miniaturises, more particularly to realize the eccentric oscillation gear device of miniaturization radially.
For solving the means of technical task
To solve the above-mentioned problems, the present invention provides a kind of eccentric oscillation gear device, has internal gear, interior with this
The external gear of gear internal messing, is configured between the eccentric body and the external gear eccentric body for swinging the external gear
Eccentric body bearing, transmit with the wheel carrier of the rotation ingredient synchronous rotary of the external gear and by the rotation ingredient of the external gear
It is multiple domestic to the wheel carrier, wherein the external gear have for the eccentric body Bearing configuration eccentric shaft bearing bore and
For the domestic insertion and circumferentially across spaced multiple inner pinholes, when from end on observation, the eccentric body bearing
Hole is Chong Die with the inner pinhole.
In the present invention, it is overlapping when the eccentric shaft bearing bore of external gear and inner pinhole are formed as from end on observation.Therefore, energy
The outer diameter (size radially) of external gear is enough further reduced, as a result, it is possible to further promote geared system radially
Miniaturization.
Invention effect
It is miniaturised in accordance with the invention it is possible to realize that geared system is whole, more particularly to realize radially small
Type.
Detailed description of the invention
Fig. 1 is the section view for indicating the structure of eccentric oscillation gear device involved in an example of embodiments of the present invention
Figure.
Fig. 2 is the enlarged cross-sectional view of the major part of Fig. 1.
Fig. 3 is the cross-sectional view of III-III line cutting along Fig. 1.
Side view when Fig. 4 is from IV direction of Fig. 1.
Specific embodiment
Hereinafter, an example of embodiments of the present invention is described in detail with reference to the accompanying drawings.
Fig. 1 is the section view for indicating the structure of eccentric oscillation gear device involved in an example of embodiments of the present invention
Figure, Fig. 2 are the enlarged cross-sectional view of the major part of Fig. 1, and Fig. 3 is the cross-sectional view of III-III line cutting along Fig. 1, and Fig. 4 is from Fig. 1
IV direction observation when side view.
Eccentric oscillation gear device G1 has internal gear 10 and the external gear 20 with 10 internal messing of internal gear.Gear
Device G1 is also equipped with eccentric body 30 for swinging external gear 20, the bias that is configured between the eccentric body 30 and external gear 20
Body bearing 40, the side being arranged in the axial direction of external gear 20 and with the wheel carrier 50 of the rotation ingredient synchronous rotary of external gear 20 and
The rotation ingredient of external gear 20 is transferred to multiple domestic the 60 of wheel carrier 50.
External gear 20 is with the eccentric shaft bearing bore 21 configured for eccentric body bearing 40 and for domestic 60 insertion and along week
To the multiple inner pinholes 22 being arranged across interval.But eccentric shaft bearing bore 21 and inner pinhole 22 not as in the past from
It is overlapped when radial observation, but from end on observation when is overlapped.
Hereinafter, the structure of geared system G1 is described in more detail.
In geared system G1, the configuration of input shaft 70 is at radial central (on the axle center C10 of internal gear 10).Input shaft 70
The output shaft that can be prime retarder etc. is also possible to output shaft (motor drive shaft) of motor etc..Input shaft 70 has the 1st ladder
Portion 71 and the 2nd stepped part 72, and with the 1st stepped part 71 and the 2nd stepped part 72 for boundary, front end successively attenuates, and (outer diameter becomes
It is small).
Input shaft 70 is assembled in the prime bearing 75 of external component (not shown) and is configured at the front end of input shaft 70
Input shaft bearing 76 support.Input shaft bearing 76 is supported by wheel carrier 50.Input shaft bearing 76 is with the needle roller 77 for constituting rolling element and outside
Circle 78 does not have independent inner ring (input shaft 70 also serves as inner ring).Each needle roller 77 of input shaft bearing 76 is kept the guarantor of frame 79
It holds.Therefore, input shaft 70 can be inserted into the inside of each needle roller 77 in the state that outer ring 78 and needle roller 77 are held in wheel carrier 50.
Periphery between 1st stepped part 71 of input shaft 70 and the 2nd stepped part 72 has one and cuts along what axis was eliminated
It is the periphery referred to as so-called " D-shaped notch " except portion 74.It is embedded with outside the periphery of the part of the D-shaped notch of input shaft 70
Eccentric body 30 for swinging external gear 20.
Eccentric body 30 is integrally formed into substantially cylindrical.The shape of the inner circumferential of eccentric body 30 is cut with input shaft 70
Shape at the periphery of D-shaped notch is consistent, to be integrally formed in the circumferential with input shaft 70.The axle center C30 phase of eccentric body 30
For axle center C70 (the axle center C10 of=internal gear 10) the bias e of input shaft 70.
In addition, the connection of input shaft 70 and eccentric body 30 is not necessarily to have to link by above-mentioned D-shaped notch.Input shaft 70
It can also for example be linked by common key and keyway with eccentric body 30, single material shape from the beginning can also be passed through
It is integrally formed.
The load reverse side end face 32 of eccentric body 30 is abutted with the 1st stepped part 71 of input shaft 70, to limit (constraint)
Eccentric body 30 in the axial direction on the side opposite with load-side it is mobile.Also, the load-side end face 34 of eccentric body 30 is pushed away with aftermentioned
Power washer 121 abuts, thus limit eccentric body 30 in the axial direction on load-side it is mobile.
Eccentric body bearing 40 is configured between eccentric body 30 and external gear 20.That is, external gear 20 is via eccentric body bearing
40 are fitted into eccentric body 30.In geared system G1, eccentric body bearing 40 by constituting the roller 42 of rolling element, from radial outside
It supports the outer ring 44 of the roller 42 and supports the inner ring 46 of the roller 42 to constitute from radially inner side.Each roller 42 is kept frame 48
It keeps.Outer ring 44 is assembled in the eccentric shaft bearing bore 21 of external gear 20 by being interference fitted.The both ends of outer ring 44 in the axial direction
With to radially inner side curved bending section 44A, 44B, roller 42 is limited by the bending section 44A, 44B and is axially moveable.
External gear 20 has for the eccentric shaft bearing bore 21 of the configuration of eccentric body bearing 40 and for domestic 60 insertion and along week
To across spaced multiple inner pinholes 22.
More specifically, external gear 20 has the main part 24 of setting eccentric shaft bearing bore 21, is set to the main part 24
Radial outside and formed external gear 20 external tooth 26T teeth portion 26 and end from 50 side of wheel carrier in the axial direction of main part 24
The transmitting wall portion 28 integrally extended to radially inner side.
The main part 24 of external gear 20 is shaped generally as cylindrical shape.Main part 24 in the axial direction in addition to transmitting wall portion 28 with
Outer inner circumferential (than transmitting wall portion 28 more by the inner circumferential with the part of load-side opposite side) constitutes eccentric shaft bearing bore 21.It is eccentric
Body bearing hole 21 is formed on the axle center C20 of external gear 20.
Substantial middle of the teeth portion 26 of external gear 20 in the axial direction of the eccentric shaft bearing bore 21 of main part 24 is from main part
24 are provided projectingly towards radial outside.The axial width L26 of teeth portion 26 is smaller than the axial width L24 of main part 24.External gear 20
Teeth portion 26 axial width L26 be preferably suppressed to main part 24 axial width L24 2/3 or less or eccentric shaft bearing bore
3/4 length below of 21 axial width L21.Therefore, in geared system G1, specifically, teeth portion 26 is axial wide
Eccentric shaft bearing bore is also suppressed to while 1/3 length below for the axial width L24 that degree L26 is suppressed to main part 24
1/2 length below of 21 axial width L21.
Also, the axial center c26 of the teeth portion 26 of external gear 20 than main part 24 axial direction center c24 more to wheel carrier phase
Anti- side deviates δ (c24-c26).That is, from the load reverse side end face 24A of main part 24 to the load reverse side end of teeth portion 26
Length L (24A-26A) until the 26A of face, which compares from the load-side end face 26B of load-side end face 24B to the teeth portion 26 of main part 24, is
Length L (24B-26B) only is short.About the meaning (effect) of these structures, will be described in detail later.
The transmitting wall portion 28 of external gear 20 integrally extends to radially inner side from the load-side end of main part 24.Inner pinhole
22 through transmitting wall portion 28, and when from end on observation, inner pinhole 22 is whole completely overlapped with eccentric shaft bearing bore 21.That is, multiple
Inner pinhole 22 be provided entirely in transmitting wall portion 28 and and the not set main part 24 in outer gear 20.From the axle center of external gear 20
Radial distance R22m until C20 to the most external 22m of inner pinhole 22 is than from the axle center C20 of external gear 20 to eccentric shaft bearing bore
Radial distance R21m small (R21m > R22m) until 21 most external 21m.
In geared system G1, multiple inner pinholes 22 on the circumference concentric with the axle center C20 of external gear 20 circumferentially
Being equidistantly provided with multiple (in this embodiment setting there are six), (still, the allocation position of inner pinhole 22 and configuration number be not only
It is defined in this).
External gear 20 and 10 internal messing of internal gear.Internal gear 10 in this geared system G1 is mainly by integrated with shell 100
The internal tooth wheel body 11 of change, the outer cotter way 12 that the inner circumferential of the internal tooth wheel body 11 is formed in the mode parallel with axis, rotation are certainly
The columned export trade 14 for the internal tooth for such as being assembled in the outer cotter way 12 and constituting the internal gear 10 is constituted.The internal tooth of internal gear 10
Quantity (radical of export trade 14) it is slightly more than the quantity of the external tooth 26T of external gear 20 (in this embodiment more one).From shell 100
The load-side end of (main body 11 of internal gear 10) forms that there are four ears 102 towards radial outside is prominent.It is formed in ear 102
There is the connecting hole 104 for being integrally linked to geared system G1 on master machine (not shown).
Load-side in the axial direction of external gear 20 is configured with the wheel carrier 50 synchronous with the rotation ingredient of external gear 20.With it is interior
The 11 integrated component (that is, shell 100) of main body of gear 10 has the surface 106 parallel with the axle center C10 of internal gear 10.Wheel
Frame 50 has surface 58 opposed with surface 106 radially.That is, shell 100 and wheel carrier 50 are with opposite each other radially
Diametrically contraposition position 116, (wheel carrier 50 is supported in shell 100 configured with single base bearing at the diametrically contraposition position 116
Bearing) 110.In other words, wheel carrier 50 is via configuration in the single base bearing 110 at diametrically contraposition position 116 and by shell 100
Support.In geared system G1, base bearing 110 is made of ball bearing.Though also, illustration omitted, in outer ring side, base bearing
110 in the axial direction on the movement of load-side be restricted.
Wheel carrier 50 has the interior pin insertion hole 51 for domestic 60 indentation, the connection for linking driven member (not shown)
Bolt hole 52 and the input shaft bearing bore 53 with the end for supporting the input shaft bearing 76 of input shaft 70 to configure.The rotation of wheel carrier 50 is transmitted
To the driven member (not shown) for being linked to wheel carrier 50 by binder bolt hole 52.
Domestic 60 indentation is in the interior pin insertion hole 51 of wheel carrier 50.Domestic 60 load reverse side end 62 is with semi-girder
State is exposed from wheel carrier 50.Domestic 60 load reverse side end 62 is inserted in the transmitting wall portion 28 for being formed in external gear 20
In inner pinhole 22.Domestic 60 have the function that the rotation ingredient of external gear 20 is transferred to wheel carrier 50.About in inner pinhole 22
Diameter D22, in order to absorb its eccentric amount e for being formed as the 60 large eccentricity body 30 of outside diameter d than domestic 60 of the swing ingredient of external gear 20
Twice (D22-d60=2e).On the other hand, about domestic 60, in order to which the rotation ingredient of external gear 20 is transferred to wheel carrier 50
It is formed as, even if external gear 20 is swung, part of it is abutted with inner pinhole 22 always.Therefore, wheel carrier 50 and external gear
20 rotation ingredient synchronizing moving.
In addition, in this geared system G1, the side opposite with load in the axial direction of the inner pinhole 22 of transmitting wall portion 28
It is provided with cricoid stepped part 27.Thrust washer 121 is configured in the stepped part 27.Thrust washer 121 and external gear 20
The stepped part 27 for transmitting wall portion 28 abuts, thus limit eccentric body bearing 40 inner ring 46 and eccentric body 30 in the axial direction on it is negative
It is mobile to carry side.
As described above, in this geared system G1, the axis of the axial width L26 of the teeth portion 26 of external gear 20 than main part 24
It is small to width L24.Therefore, in this geared system G1, two sides in the axial direction of the teeth portion 26 of external gear 20 and in main part
24 radial outside configures the 1st outer key seat 90 of outer key seat 80 and the 2nd of the position of the export trade 14 of restricted internal gear 10.
1st outer key seat 80 the teeth portion 26 of external gear 20 a side position opposite with load not contacted with main part 24
The radial outside that configured in the main part 24 of mode.1st outer key seat 80 is shaped generally as cylindric shape, and and internal tooth
The axle center C10 concentric arrangement of wheel 10.1st outer key seat 80 have facade position restraining portions 81, drum surface position restraining portions 82 and
The position restraining portions on 83 these three surfaces of endface position limiting unit.
The facade position restraining portions 81 of 1st outer key seat 80 in the square with the axis facade in the periphery of the 1st outer key seat 80 by constituting.
Facade position restraining portions 81 is abutted with the load reverse side end face in the axial direction of the export trade 14 of internal gear 10, thus limits export trade 14
Position in the axial direction.By facade position restraining portions 81, the side opposite with load limited in export trade 14 in the axial direction is mobile.
The drum surface position restraining portions 82 of 1st outer key seat 80 from the radially inner side end from facade position restraining portions 81 to
26 side of teeth portion is constituted with the drum surface that the mode parallel with axis extends.The load of drum surface position restraining portions 82 and export trade 14
The radially inner side of opposite side end abuts, and thus limits the position in the radial direction of export trade 14.Pass through drum surface position restraining portions
82, prevent export trade 14 from falling off to radially inner side.
The endface position limiting unit 83 of 1st outer key seat 80 by 26 side of teeth portion in the axial direction of the 1st outer key seat 80 end face structure
At.Endface position limiting unit 83 is abutted with the load reverse side end face 26A of the teeth portion 26 of external gear 20, thus limits external gear 20
Position in the axial direction.By endface position limiting unit 83, limit external gear 20 in the axial direction on a sidesway opposite with load
It is dynamic.When in other words, from end on observation, the 1st outer key seat 80 is Chong Die with the teeth portion 26 of external gear 20.
It is prominent to radial outside from the 1st outer key seat 80 and be extended with for the 1st outer key seat 80 to be installed to shell 100
The flange shape plate portion 87 of (main body 11 of internal gear 10).It is formed in plate portion 87 for for the 1st outer key seat 80 to be installed on shell
The perforative bolt hole 88 of bolt 85 of body 100.1st outer key seat 80 is based on the plate portion 87, and by bolt 85, to be installed on shell 100 (interior
The main body 11 of gear 10) and it is integrated with the shell 100.
Also, the 1st outer key seat 80 has the inside extended from the end in the axial direction of the 1st outer key seat 80 to radially inner side
Extension 89.Hole 84 is formed through in the radial center of medial extension 89, and input shaft 70 is through the through hole 84.Inside
The end face 89E and the eccentric body bearing 40 of 40 side of eccentric body bearing in the axial direction of extension 89 are opposed across minim gap.
In this geared system G1, the position of eccentric body 30 in the axial direction is entered the 1st stepped part 71 limitation of axis 70, partially
The inner ring 46 of heart body bearing 40 is embedded in eccentric body 30 by being interference fitted outside, thus limits eccentric body bearing 40 relative to bias
Position in the axial direction of body 30.Therefore, medial extension 89 will not specially limit the position of eccentric body bearing 40 under normal circumstances
It sets, it is axially biased relative to eccentric body 30 because of certain accidental cause secondarily to limit (preventing) eccentric body bearing 40.
In addition, the medial extension 89 can be made to have directly limitation eccentric such as when being difficult to that stepped part is arranged in input shaft 70
The function of the position of body 30 and eccentric body bearing 40 in the axial direction.
On the other hand, the 2nd outer key seat 90 is in the load side position of the teeth portion 26 of external gear 20 not contact with main part 24
The radial outside that configured in the main part 24 of mode.2nd outer key seat 90 is again formed as substantially cylindric shape, and with it is interior
The axle center C10 concentric arrangement of gear 10.2nd outer key seat 90 has facade position restraining portions 91, drum surface position restraining portions 92
And the position restraining portions on 93 these three surfaces of endface position limiting unit.
The facade position restraining portions 91 of 2nd outer key seat 90 in the square with the axis facade in the periphery of the 2nd outer key seat 90 by constituting.
Facade position restraining portions 91 is abutted with the load-side end face in the axial direction of the export trade 14 of internal gear 10, thus limits export trade 14 in axis
Upward position.By facade position restraining portions 91, the movement of the load-side in export trade 14 in the axial direction is limited.
The drum surface position restraining portions 92 of 2nd outer key seat 90 from the radially inner side end from facade position restraining portions 91 to
26 side of teeth portion is constituted with the drum surface that the mode parallel with axis extends.The load of drum surface position restraining portions 92 and export trade 14
The radially inner side of side end abuts, and thus limits the position in the radial direction of export trade 14.By drum surface position restraining portions 92, prevent
Only export trade 14 falls off to radially inner side.
The endface position limiting unit 93 of 2nd outer key seat 90 by 26 side of teeth portion in the axial direction of the 2nd outer key seat 90 end face structure
At.Endface position limiting unit 93 is abutted with the load-side end face 26B of the teeth portion 26 of external gear 20, thus limits external gear 20 in axis
Upward position.By endface position limiting unit 93, limit external gear 20 in the axial direction on load-side it is mobile.In other words, from axis
To when observation, the 2nd outer key seat 90 is Chong Die with the teeth portion 26 of external gear 20.
The recess portion 97 for being screwed into Top fastening screw 96 is formed in a part of the periphery of the 2nd outer key seat 90, this holds out against
Screw 96 is used to the 2nd outer key seat 90 being fixed on shell 100 (main body 11 of internal gear 10).2nd outer key seat 90 is by making to push up
Tight screw 96 is screwed into (pressing) via the screw hole 107 for being formed in shell 100 and is fixed on shell 100 in the recess portion 97, thus with
100 integration of shell.
Also, it with shell 100 (main body 11 of internal gear 10) the integrated component (that is, the 2nd outer key seat 90), is somebody's turn to do
Load-side end face 90E in the axial direction of 2nd outer key seat 90 is constituted for bearing stopping for the thrust load (torque) from wheel carrier 50
The bearing plane of thrust bearing 120.Wheel carrier 50 has the load reverse side in the axial direction opposed with the load-side end face 90E in the axial direction
End face 50E.That is, the 2nd outer key seat 90 has with wheel carrier 50 by the load-side end face 90E in axial direction and the load reverse side in axial direction
The axially opposed position 118 that end face 50E is constituted is configured with thrust bearing 120 at the axially opposed position 118.In order to by the axis
It is ensured to be larger to opposed position 118, the thickness radially of the 2nd outer key seat 90 is set as to the radial direction of key seat 80 outer than the 1st
On thickness it is thicker.
Shell 100 has four ears 102 extended towards radial outside in load-side end.Ear 102, which has, to be used for
The connecting hole 104 geared system G1 being linked on master machine (not shown).Geared system G1 via the ear 102 connecting hole
104 and with master machine link.
Then, the effect of this eccentric oscillation gear device G1 is illustrated.
Firstly, being illustrated from the transmitting effect of the power of geared system G1.If input shaft 70 passes through motor (not shown)
Rotation etc. and rotate, then the eccentric body 30 linked by D-shaped notch and the input shaft 70 is understood rotate integrally with input shaft 70.If
Eccentric body 30 rotates, then it makes 20 swing rotary of external gear via eccentric body bearing 40.Due to the tooth of the external tooth 26T of external gear 20
Number it is one fewer than the number of teeth (radical) of the internal tooth (export trade 14) of internal gear 10, therefore external gear 20 it is every swing 1 time (input shaft 70 often
Rotation 1 time), external gear 20 rotates the amount that (rotation) is equivalent to a tooth relative to internal gear 10.The rotation ingredient of external gear 20 passes through
Wheel carrier 50 is transferred to by being inserted in domestic the 60 of the inner pinhole 22 for the transmitting wall portion 28 for being formed in external gear 20.In addition, external tooth
The swing ingredient of wheel 20 is then absorbed by the gap between inner pinhole 22 and domestic 60.
Then, it acts on and being illustrated involved in the structure to eccentric shaft bearing bore 21 with inner pinhole 22.
Assuming that as in the past from radial when eccentric shaft bearing bore it is Chong Die with inner pinhole, then radially, external gear
Other than needing to have the space of eccentric shaft bearing bore and inner pinhole itself, eccentric shaft bearing bore and inner pinhole are also needed certainly
Between space and inner pinhole and external tooth between space.
But in this geared system G1, eccentric shaft bearing bore 21 is be overlapped in the axial direction with inner pinhole 22, and inner pinhole 22
It is radially and underlapped with eccentric shaft bearing bore 21.Therefore, radially, external gear 20 substantially need to only have eccentric shaft
Space between the space of bearing bore 21, the space of external tooth 26T and eccentric shaft bearing bore 21 and external tooth 26T.Therefore, it is easy to do
The design that the radial dimension (outer diameter) of external gear 20 is further reduced out, it is whole so as to further reduce geared system G1
Radial dimension.
Also, in this geared system G1, following effect also can be obtained.
In this geared system G1, external gear 20 has the main part 24 of setting eccentric shaft bearing bore 21 and is set to the master
The radial outside in body portion 24 and formed the external gear 20 external tooth 26T teeth portion 26.Moreover, the axial width L26 of the teeth portion 26
Be formed as smaller than the axial width L24 of main part 24.Thereby, it is possible to inhibit in the external tooth 26T of external gear 20 and internal gear 10
The end thereof contacts of tooth (export trade 14), so as to further increase the smoothness of operation.
More specifically, in this geared system G1, due to from the wheel carrier in the axial direction of the external gear 20 swung
50 side ends export rotation ingredient, therefore, external gear 20 every time swing when, the axle center C20 of the external gear 20 tend to relative to
The axle center C10 of internal gear 10 is easy inclination.If the axle center C20 of external gear 20 is tilted, the external tooth 26T and internal gear of external gear 20
The engagement of 10 internal tooth (export trade 14) generates so-called " end thereof contacts " phenomenon.
If generating end thereof contacts phenomenon, the engagement of the end in the axial direction of teeth portion 26 can not be carried out swimmingly, can be damaged
The smoothness of operation.In this geared system G1, the axial width L26 of the teeth portion 26 of external gear 20 is set as the axis than main part 24
Small to width L24, simultaneously teeth portion 26 is not present in both ends in the axial direction of main part 24.Therefore, even if the axle center C20 of external gear 20
Inclination is also able to suppress because C20 inclination in the axle center causes to generate end thereof contacts in the end of teeth portion 26, so as to improve gear
The smoothness of the operation of device G1.
Also, in this geared system G1, in axial axial direction of the center c26 than main part 24 of the teeth portion 26 of external gear 20
C24 is entreated more to deviate δ (c24-c26) to the side opposite with wheel carrier.In other words, from the load reverse side end face 24A of main part 24
Length L (24A-26A) until the load reverse side end face 26A of teeth portion 26 than the load-side end face 24B from main part 24 to
Length L (24B-26B) until the load-side end face 26B of teeth portion 26 is short.
It is illustrated hereinafter, acting on it.Exist in the eccentric shaft bearing bore 21 as this geared system G1 and inner pinhole 22
In the case where being overlapped in axial direction, in other words, the side opposite with wheel carrier in the axial direction of external gear 20 is configured with eccentric shaft
Hold 40 and in the case where the 50 side output power of wheel carrier in axial direction, the axle center C20 of external gear 20 is not tended to main part
It is tilted centered on 24 axial center c24, and is intended to tilt centered on the side for more leaning on eccentric body bearing 40.That is,
The offset radially of end in the axial direction of main part 24 caused by the axle center C20 inclination of external gear 20 is in 50 side of wheel carrier
Greater than 40 side of eccentric body bearing in axial direction.
In this geared system G1, the axial direction center c24 of the axial center c26 of the teeth portion 26 of external gear 20 than main part 24
δ (c24-c26) more is deviated to the side opposite with wheel carrier, therefore can make external gear 20 with internal gear 10 because external gear 20 inclines
It is engaged in the smaller axial region of offset caused by tiltedly radially.Therefore, teeth portion 26 can effectively further be inhibited
End thereof contacts, so as to ensure geared system G1 operation further smoothness.
Also, in this geared system G1, internal gear 10 has the main body 11 of internal gear 10 and is installed on the internal gear 10
Main body 11 and constitute the export trade 14 of internal tooth.Moreover, actively wider than the axial direction of main part 24 using the axial width L26 of teeth portion 26
The small situation of L24 is spent, using the export trade 14 of the radial outside configuration limits internal gear 10 of the main part 24 in external gear 20
The outer key seat 90 of outer key seat 80 and the 2nd of the 1st of position and the teeth portion for making the 1st outer key seat 80 and the 2nd outer key seat 90 and external gear 20
26 from end on observation when the structure that is overlapped.Thereby, it is possible to be used as the radial outside region of main part 24 to be configured in limitation
The space of the 1st outer key seat 90 of outer key seat 80 and the 2nd of the position of the export trade 14 of gear 10, therefore (can be real in addition to radially
Other than now minimizing) also geared system G1 can be made to miniaturise in the axial direction.
Also, in this geared system G1, external gear is also limited using by the 1st outer key seat 90 of outer key seat 80 and the 2nd
20 structures being axially moveable.It is therefore not necessary to which other limiting components are arranged in order to limit the axial movement of external gear 20.And
And the radial outside region since the main part 24 of external gear 20 can be utilized, and only by the mobile limit of the external gear 20
The structure for the two sides that component processed is arranged in the axial direction of main part 24 is compared, and can further promote geared system G1 in the axial direction
Miniaturization.
Moreover, in this geared system G1, particularly by two sides of the configuration in the axial direction of the teeth portion 26 of external gear 20
The 1st outer key seat 90 of outer key seat 80 and the 2nd limits the axial movement of external gear 20, therefore (can not only limit external gear 20
Axial movement) it the axle center C20 of external gear 20 can also be limited is tilted relative to the axle center C10 of internal gear 10.
Also, the 1st outer key seat 90 of outer key seat 80 and the 2nd by facade position restraining portions 81 and facade position restraining portions 91 come
Limit the position in the axial direction of export trade 14, and by drum surface position restraining portions 82 and drum surface position restraining portions 92 come
Limit the position in the radial direction of export trade 14.That is, can inhibit export trade 14 in diameter merely with the 1st outer key seat 90 of outer key seat 80 and the 2nd
To and the two axial directions on position, be axially moveable so as to limit export trade 14 and export trade 14 can be prevented to diameter
It falls off inwardly.
Also, in this geared system G1, the 1st outer key seat 80 is configured to the medial extension extended to radially inner side
It 89 and is axially moveable by the medial extension 89 to limit eccentric body bearing 40.As described above, the function can be with auxiliary
The form application for helping the position of the eccentric body 30 based on interference fit to limit, such as only can also pass through medial extension 89 more
The energetically position of limitation eccentric body bearing 40 in the axial direction.
Also, in this geared system G1, have and the integrated component of internal gear 10 (that is, the 2nd outer key seat 90) and wheel
The axially opposed position 118 opposite each other in the axial direction of frame 50, and thrust bearing 120 is configured at the axially opposed position 118.
Therefore, the torque for occurring being transferred to 50 side of wheel carrier via domestic 60 can be further reliably prevented with low cost make wheel carrier 50
Inclined unfavorable condition.
Also, in this geared system G1, have and 10 integrated component (that is, shell 100) of internal gear and wheel carrier 50
Diametrically contraposition position 116 opposite each other radially, and single base bearing is configured at the diametrically contraposition position 116
110.Therefore, the miniaturization in axial direction can also be promoted with this configuration.
In addition, in the present invention, using the case where eccentric shaft bearing bore and inner pinhole be overlapped in the axial direction as necessary condition,
But it about its specific structure, the especially structure of this geared system G1 and is not particularly limited.
For example, other than with main part 24 and teeth portion 26, also there is transmitting wall portion 28 in this geared system G1,
And it is formed through the inner pinhole 22 of the state of the transmitting wall portion 28.But inner pinhole 22 is without having to through transmitting wall
Portion 28 can also be formed as recess portion with the end.
Also, in this geared system G1, when from end on observation, inner pinhole 22 is whole with the weight completely of eccentric shaft bearing bore 21
It is folded, to realize the miniaturization in the radial direction of external gear 20, still, corresponding effect can be obtained only a fraction overlapping
Fruit.In other words, the radial distance R22m until the axle center C20 to the most external 22m of inner pinhole 22 of external gear 20 can than from
Radial distance R21m until the axle center C20 to the most external 21m of eccentric shaft bearing bore 21 of external gear 20 is big or identical.
Also, in this geared system G1, the axial width L26 of teeth portion 26 is set as the axial width than main part 24
L24 is small, to inhibit to generate end thereof contacts caused by the inclination of external gear 20, improves the smoothness of engagement.But for example,
Teeth portion 26 also can have the axial width identical or above with the axial width of main part 24.
Also, in this geared system G1, by the way that the axial direction center c26 of teeth portion 26 is central to the axial direction than main part 24
C24 more leans on the side opposite with wheel carrier to deviate δ (c24-c26), further improves the smoothness of engagement.But teeth portion 26
Axial center c26 for example also can be set to consistent with the axial center c24 of main part 24.
Also, in this geared system G1, restricted internal gear is configured in the radial outside of the main part 24 of external gear 20
The 1st outer key seat 90 of outer key seat 80 and the 2nd of the position of 10 export trade 14.But the 1st outer key seat 90 of outer key seat 80 and the 2nd is simultaneously
It is not required structure, export trade 14 can also be positioned by other methods.Certainly, external gear 20 is without having to lead to
The 1st outer key seat 90 of outer key seat 80 and the 2nd that configuration is crossed in the radial outside of main part 24 (can also pass through to carry out position limitation
Other methods carry out position limitation).
Also, in this geared system G1, have and the integrated component of internal gear 10 (that is, the 2nd outer key seat 90) and wheel
The axially opposed position 118 opposite each other in the axial direction of frame 50, and thrust bearing is configured at the axially opposed position 118
120.But the structure also it is not necessary to structure.For example, axially opposed position can also be formed in internal gear itself and wheel
Between frame.Also, as " with the integrated component of internal gear ", without the structure for having to that there is the above-mentioned 2nd outer key seat 90, only
If with the integrated component of internal gear, and being not particularly limited.About the thrust bearing configured, in said gear
Sliding bearing is used in device G1, still, the type of thrust bearing is not only defined in sliding bearing.
Also, in said gear device G1, have with the integrated shell 100 of internal gear 10 and wheel carrier 50 radially
Diametrically contraposition position 116 opposite each other, and single base bearing 110 is configured at the diametrically contraposition position 116.But
It is not limited to the structure, for example, it is also possible to configure a pair of (two) angular contact bearing as master at the diametrically contraposition position
Bearing.
Also, even if type is also not only defined in ball bearing in the case where being provided with single base bearing.Example
Such as, crossed roller bearing or double-row type ball bearing also can be used.Configured with a pair of of angular contact bearing or crossed roller bearing
Or in the case that double-row type ball bearing etc. can bear the bearing of the torque of wheel carrier as base bearing, it is not absolutely required to for bearing
The thrust bearing 120 of the torque of wheel carrier.
Also, the base bearing for being configured at the diametrically contraposition position is not necessarily the independent bearing of inner ring and outer ring, for example,
It is also possible to one or two of inner ring or outer ring to double as by wheel carrier or internal gear or with the integrated component of internal gear
Bearing.
In addition, in order to improve the sliding property with inner pinhole, being rotated certainly domestic sometimes about the domestic of this geared system
It is such as outer embedded with cylindric interior roller.At this point, the internal diameter of inner pinhole is designed to the eccentricity of the outer diameter large eccentricity body than interior roller
Twice.It include the domestic concept for being embedded with interior roller outside in domestic in the present invention.
Also, about the export trade for the internal tooth for constituting internal gear, in order to improve the engagement property with external gear, sometimes by supporting pin
And rotatably freely the outer outer roller embedded in the supporting pin constitutes export trade.It is outer in the present invention when using the export trade of this structure
Pin further includes the concept of supporting pin and outer roller.For example, outer key seat can be the component of the position of limitation supporting pin, it is also possible to limit
The component of the position of outer roller processed can also be the component of the position of both limitation supporting pin and outer roller.
Symbol description
G1- geared system, 10- internal gear, 20- external gear, 21- eccentric shaft bearing bore, 22- inner pinhole, 30- eccentric body,
40- eccentric body bearing, 50- wheel carrier, 60- are domestic.
Industrial availability
The present invention relates to a kind of eccentric oscillation gear devices.
Claims (9)
1. a kind of eccentric oscillation gear device has the external gear of internal gear and the internal gear internal messing, makes the external gear
The eccentric body that is swung, the eccentric body bearing that is configured between the eccentric body and the external gear, with the external gear from
It changes into the wheel carrier of point synchronous rotary and the rotation ingredient of the external gear is transferred to the multiple domestic of the wheel carrier, the bias
Oscillating-type geared system is characterized in that,
The external gear has for the eccentric shaft bearing bore of the eccentric body Bearing configuration and for the domestic insertion and along week
To across spaced multiple inner pinholes,
When from end on observation, the eccentric shaft bearing bore is Chong Die with the inner pinhole.
2. eccentric oscillation gear device according to claim 1, which is characterized in that
The radial outside and shape that the external gear has the main part that the eccentric shaft bearing bore is arranged and is set to the main part
At the teeth portion of the external tooth of the external gear,
The axial width of the teeth portion is smaller than the axial width of the main part.
3. eccentric oscillation gear device according to claim 2, which is characterized in that
The axial center of the teeth portion is more deviated to the side opposite with wheel carrier than the axial center of the main part.
4. eccentric oscillation gear device according to claim 2 or 3, which is characterized in that
The internal gear has internal tooth wheel body and is mounted on the internal tooth wheel body and constitutes the export trade of internal tooth,
The outer key seat of the position of the export trade of the restricted internal gear is configured in the radial outside of the main part of the external gear,
When from end on observation, the outer key seat is Chong Die with the teeth portion of the external gear.
5. eccentric oscillation gear device according to claim 4, which is characterized in that
The external gear is limited by the outer key seat to be axially moveable.
6. eccentric oscillation gear device according to claim 4 or 5, which is characterized in that
The outer key seat limits position of the export trade on the two radial and axial directions.
7. the eccentric oscillation gear device according to any one of claim 4 to 6, which is characterized in that
The medial extension that the oriented radially inner side of export trade seat tool extends,
The eccentric body bearing is limited by the medial extension to be axially moveable.
8. eccentric oscillation gear device according to any one of claims 4 to 7, which is characterized in that
Also there is the internal gear or the axial direction opposite each other in the axial direction with the integrated component of the internal gear and the wheel carrier
Opposed position,
Thrust bearing is configured at the axially opposed position.
9. eccentric oscillation gear device according to any one of claims 4 to 8, which is characterized in that
Also with the internal gear or with the integrated component of the internal gear and the wheel carrier radial direction opposite each other radially
Opposed position,
Single bearing is configured at the diametrically contraposition position.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016236280A JP6629175B2 (en) | 2016-12-05 | 2016-12-05 | Eccentric oscillating gear device |
| JP2016-236280 | 2016-12-05 | ||
| PCT/JP2017/042450 WO2018105428A1 (en) | 2016-12-05 | 2017-11-27 | Eccentrically rocking type gear device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109996974A true CN109996974A (en) | 2019-07-09 |
| CN109996974B CN109996974B (en) | 2022-02-25 |
Family
ID=62491476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780060291.5A Active CN109996974B (en) | 2016-12-05 | 2017-11-27 | Eccentric oscillating gear device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6629175B2 (en) |
| CN (1) | CN109996974B (en) |
| DE (1) | DE112017006143B4 (en) |
| WO (1) | WO2018105428A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446361A (en) * | 2020-03-25 | 2021-09-28 | 住友重机械工业株式会社 | Eccentric oscillating gear device |
| WO2022041716A1 (en) * | 2020-08-31 | 2022-03-03 | 灵智信息服务（深圳）有限公司 | Internal meshing planetary gear device, vehicle wheel device, and vehicle |
| CN114270074A (en) * | 2019-09-05 | 2022-04-01 | 池田昌幸 | Gear speed change device |
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| CN201416619Y (en) * | 2009-05-31 | 2010-03-03 | 胡菱菱 | Self-locking type speed reducer |
| CN103119326A (en) * | 2010-09-09 | 2013-05-22 | Ntn株式会社 | Reduction device |
| CN103322132A (en) * | 2012-03-21 | 2013-09-25 | 住友重机械工业株式会社 | Eccentric swinging type speed reducer and manufacturing method of external gear thereof |
| CN105276087A (en) * | 2014-07-15 | 2016-01-27 | 住友重机械工业株式会社 | Gear device series |
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| US2795155A (en) | 1953-03-04 | 1957-06-11 | Falk Corp | Speed reducers |
| US4235129A (en) | 1978-03-30 | 1980-11-25 | Isamu Takasu | Speed reduction mechanism |
| JPS6220240A (en) | 1985-07-19 | 1987-01-28 | Matsushita Electric Ind Co Ltd | Enclosed cell |
| JPS6220240U (en) | 1985-07-19 | 1987-02-06 | ||
| JP3565279B2 (en) * | 1991-12-24 | 2004-09-15 | 住友重機械工業株式会社 | Inner mesh planetary gear structure |
| JPH0771540A (en) * | 1993-09-07 | 1995-03-17 | Mitsubishi Heavy Ind Ltd | Reduction gear |
| JP2009197993A (en) | 2008-02-22 | 2009-09-03 | Masashi Mukogawa | Reduction gear |
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2016
- 2016-12-05 JP JP2016236280A patent/JP6629175B2/en active Active
-
2017
- 2017-11-27 DE DE112017006143.1T patent/DE112017006143B4/en active Active
- 2017-11-27 CN CN201780060291.5A patent/CN109996974B/en active Active
- 2017-11-27 WO PCT/JP2017/042450 patent/WO2018105428A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63254251A (en) * | 1987-04-13 | 1988-10-20 | Sumitomo Heavy Ind Ltd | Planetary gear speed variation gear |
| CN201416619Y (en) * | 2009-05-31 | 2010-03-03 | 胡菱菱 | Self-locking type speed reducer |
| CN103119326A (en) * | 2010-09-09 | 2013-05-22 | Ntn株式会社 | Reduction device |
| CN103322132A (en) * | 2012-03-21 | 2013-09-25 | 住友重机械工业株式会社 | Eccentric swinging type speed reducer and manufacturing method of external gear thereof |
| CN105276087A (en) * | 2014-07-15 | 2016-01-27 | 住友重机械工业株式会社 | Gear device series |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114270074A (en) * | 2019-09-05 | 2022-04-01 | 池田昌幸 | Gear speed change device |
| CN114270074B (en) * | 2019-09-05 | 2024-02-20 | 池田昌幸 | Gear speed variator |
| CN113446361A (en) * | 2020-03-25 | 2021-09-28 | 住友重机械工业株式会社 | Eccentric oscillating gear device |
| WO2022041716A1 (en) * | 2020-08-31 | 2022-03-03 | 灵智信息服务（深圳）有限公司 | Internal meshing planetary gear device, vehicle wheel device, and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112017006143B4 (en) | 2023-02-02 |
| DE112017006143T5 (en) | 2019-08-22 |
| WO2018105428A1 (en) | 2018-06-14 |
| CN109996974B (en) | 2022-02-25 |
| JP2018091434A (en) | 2018-06-14 |
| JP6629175B2 (en) | 2020-01-15 |
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